Intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on thermal expansion and contraction principle

Abstract

Disclosed is a continuous feeding mechanism including a transfer mechanism, wherein the transfer mechanism includes a rotatable indent roller circumferentially provided with a plurality of blanking grooves; a post pin is arranged in each blanking groove; the post pin is connected with a spring; the spring is arranged towards the interior of the indent roller; and the post pin can move along the blanking grooves; a feeding box, wherein the bottom of the feeding box is hollow, and the bottom is arranged above the indent roller or the bottom is fixedly connected with the indent roller; the continuous feeding mechanism is arranged above one side of the transfer mechanism; and an electromagnetic heating mechanism which includes a supporting frame, wherein the transfer mechanism is arranged in the supporting frame, and an electromagnetic coil is circumferentially arranged outside the supporting frame.

Claims

1. An intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on a thermal expansion and contraction principle, comprising: an electromagnetic heating mechanism comprising a supporting frame, wherein a transfer mechanism is arranged in the supporting frame, and an electromagnetic coil is circumferentially arranged outside the supporting frame; and the transfer mechanism penetrating through the supporting frame and used to feed walnut kernels into the supporting frame and transfer the walnut kernels out of the electromagnetic heating mechanism.

2. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 1, wherein one side of the transfer mechanism is also provided with a feeding mechanism.

3. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 2, wherein the feeding mechanism comprises a feeding plate obliquely arranged; a middle portion of the feeding plate is provided with a rotating shaft with a material shifting groove; the rotating shaft is connected with a grooved pulley component disposed on a side portion of the feeding plate; and a lower half section of the feeding plate is provided with a plurality of distributing plates; or the distributing plates are arranged along a length direction of the feeding plate, and a longitudinal section of each distributing plate is of a herringbone structure; and the rotating shaft is arranged in a width direction of the feeding plate.

4. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 1, wherein the electromagnetic heating mechanism can be replaced by a resistance heating mechanism.

5. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 1, wherein the longitudinal section of the supporting frame is annular; both sides of the supporting frame are supported respectively through the supporting plate; a radiation liner is arranged in the supporting frame; a thermal insulation layer is arranged between the radiation liner and the electromagnetic coil; further, the outer side of the electromagnetic coil is provided with a thermal insulation shell.

6. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 5, wherein a temperature sensor is arranged in the radiation liner; the temperature sensor is connected with a controller; and the controller is separately connected with a control switch of the electromagnetic coil and the transfer mechanism; or, the longitudinal section of the radiation liner is arranged in a rectangular ring.

7. The intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle according to claim 1, wherein the transfer mechanism is a conveyor belt; the conveyor belt is supported through transfer rolls arranged on an upper support rack and a lower support rack; the transfer rolls are driven by a belt transfer component to rotate; the upper support rack and the lower support rack are supported through a plurality of connecting rods; and the supporting frame is arranged around the upper support rack.

Description

DESCRIPTION OF THE DRAWINGS

(1) The drawings of description constituting part of the present application are used to provide further understanding of the present application. The exemplary embodiments and description thereof of the present application are used to explain the present application and do not constitute the improper limitation to the present application.

(2) FIG. 1 is an isometric diagram of an intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on a thermal expansion and contraction principle (an overall isometric diagram of the apparatus);

(3) FIG. 2 is an exploded view of an intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on a thermal expansion and contraction principle;

(4) FIG. 3(a) is a left view of an electromagnetic heating square tube;

(5) FIG. 3(b) is a sectional view of an electromagnetic heating square tube;

(6) FIG. 4(a) is an isometric diagram of a transmission apparatus;

(7) FIG. 4(b) is a left view of a transmission apparatus:

(8) FIG. 4(c) is a top view of a transmission apparatus;

(9) FIG. 5(a) is a left view of a continuous feeding mechanism;

(10) FIG. 5(b) is a sectional view of a continuous feeding mechanism;

(11) FIG. 5(c) is an isometric diagram of a continuous feeding mechanism pulley; and

(12) FIG. 6 is an isometric diagram of a grooved pulley;

(13) In the figures: I-01—thermal insulation shell, I-02—electromagnetic coil, I-03—thermal insulation layer, I-04—right end cover, I-05—washer, I-06—bolt, I-07—radiation liner, I-08—supporting plate 1, I-09—left end cover, I-10—supporting plate 2, I-11—temperature sensor

(14) II-01—stepper motor, II-02—key 1, II-03—key 2, II-04—key 3, II-05—key 4, II-06—transmission belt 1, II-07—transmission belt 2, II-08—belt pulley 1, II-09—belt pulley 2, II-10—belt pulley 3, II-11—belt pulley 4, II-12—transfer shaft 1, II-13—transfer shaft 2, II-14—supporting shaft 1, II-15—supporting shaft 2, II-16—supporting shaft 3, II-17—transfer bearing, II-18—supporting bearing, II-19—conveyor belt, II-20—supporting angle steel, and II-21—supporting I-shaped steel.

(15) III-01—seed protection plate, III-02—indent roller, III-03—slide block, III-04—post pin, III-05—positioning shaft sleeve, III-06—spring, III-07—eccentric sleeve, III-08—adjusting rotating shaft, III-09—key, III-10—feeding box, III-11—feeding plate, III-12—rotating plate, III-13—distributing plate, III-14—grooved pulley, and III-15—grooved pulley core.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(16) It should be noted that the following detailed description is exemplary and is intended to provide further illustration to the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as generally understood by ordinary skilled in the prior art to which the present invention belongs.

(17) It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit exemplary implementation modes according to the present invention. As used herein, the singular form is also intended to include the plural form unless otherwise clearly indicated by the context. In addition, it should be understood that when the terms “contain” and/or “include” are used in the specification, the terms specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

(18) As described in the background, the prior art has defects. In order to solve the above technical problems, the present application is proposed.

(19) In a typical implementation mode of the present application, as shown in FIG. 1, an intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on a thermal expansion and contraction principle includes three portions: an electromagnetic heating mechanism I, a transfer mechanism II aid a continuous feeding mechanism III (briefly called a dispersion mechanism).

(20) As shown in FIG. 2, FIG. 2 is an exploded view of the intelligent apparatus for separating walnut kernels and red coats by belt conveying and heat radiation based on the thermal expansion and contraction principle, and all components are shown in the figures.

(21) As shown in FIG. 3(a) and FIG. 3(b), a left end cover I-09 and a right end cover I-04 are fixed on both ends of a supporting frame through a bolt I-06 and a washer I-05 to perform certain thermal insulation effect. The outer side of the supporting frame is provided with a thermal insulation shell I-01. The left end cover I-09 and the right end cover I-04 are respectively provided with a rectangular opening for facilitating the transportation of materials. A radiation liner I-07 is rectangular and is sleeved in a cylindrical thermal insulation layer I-03. An electromagnetic coil I-02 is wound outside the thermal insulation layer I-03. A temperature sensor I-11 is arranged inside the radiation liner so as to monitor the temperature inside a heating apparatus. A supporting plate 1 I-08 and a supporting plate 2 I-10 support the heating mechanism to perform a fixing and supporting effect.

(22) The walnut kernels are heated in a heat radiation mode. Firstly, by using the electromagnetic induction principle, eddy current is generated on the radiation liner, and then the radiation heat exchanging process of the liner and the walnut kernels is used to increase the temperature of the walnut kernels. Since the heat radiation occurs on the surface of an object, when the temperature of the red coats increases apparently, the temperature of the walnut kernels does not increase significantly.

(23) Supposing that the temperature of the liner is homogeneous, red coat materials on the surfaces of the liner and walnut kernels can be regarded as gray bodies. The numbers of all sides of the liner are respectively 1, 2, 3 and 4, and the number of the material is 5, so
G.sub.5F.sub.5=J.sub.1F.sub.1φ.sub.1,5+J.sub.2F.sub.2φ.sub.2,5+J.sub.3F.sub.3φ.sub.3,5+J.sub.4F.sub.4φ.sub.4,5  (1)
Q.sub.5=J.sub.5F.sub.5−G.sub.5F.sub.5=J.sub.5F.sub.5−J.sub.1F.sub.1φ.sub.1,5−J.sub.2F.sub.2φ.sub.2,5−J.sub.3F.sub.3φ.sub.3,5−J.sub.4F.sub.4φ.sub.4,5   (2)

(24) an effective radiation expression is used to obtain
J.sub.5F.sub.5=F.sub.5E.sub.b5−(−1)Q.sub.5  (3)
J.sub.1F.sub.1+J.sub.2F.sub.2+J.sub.3F.sub.3+J.sub.4F.sub.4=F.sub.1E.sub.b1+F.sub.2E.sub.b2+F.sub.3E.sub.b3+F.sub.4E.sub.b4−(−1)Q  (4)

(25) Because Q.sub.5=−Q

(26) it can derive that

(27) $\begin{array}{cc}{Q}_5=\frac{F_5{E}_{b5}-{\phi }_{1,5}{F}_1{E}_{b1}-{\phi }_{2,5}{F}_2{E}_{b2}-{\phi }_{3,5}{F}_3{E}_{b3}-{\phi }_{4,5}{F}_4{E}_{b4}}{\frac{1}{{\mathrm{.Math.}}_1}+\left({\phi }_{1,5}+{\phi }_{2,5}+{\phi }_{3,5}+{\phi }_{4,5}\right)\left(\frac{1}{{\mathrm{.Math.}}_2}-1\right)}& \left(5\right)\end{array}$

(28) Because φ.sub.1,5F.sub.1=φ.sub.5,1F.sub.5

(29) it is substituted in the above formula to obtain

(30) $\begin{array}{cc}{Q}_5=\frac{F_5{E}_{b5}-\left(\begin{array}{c}{F}_1{E}_{b1}\frac{F_5}{F_1}{\phi }_{5,1}+F_2{E}_{b2}\frac{F_5}{F_2}{\phi }_{5,2}+\\ F_3{E}_{b3}\frac{F_5}{F_3}{\phi }_{5,3}+F_4{E}_{b4}\frac{F_5}{F_4}{\phi }_{5,4}\end{array}\right)}{\frac{1}{{\mathrm{.Math.}}_1}+\left({\phi }_{1,5}+{\phi }_{2,5}+{\phi }_{3,5}+{\phi }_{4,5}\right)\left(\frac{1}{{\mathrm{.Math.}}_2}-1\right)}& \left(6\right)\end{array}$

(31) Because 1, 2, 3 and 4 are the same material, E.sub.b1=E.sub.b2=E.sub.b3=E.sub.b4.

(32) Because φ.sub.5,1+φ.sub.5,2+φ.sub.5,3+φ.sub.5,4=1,

(33) $\begin{array}{cc}{Q}_5=\frac{F_5{E}_{b5}-F_5{E}_{b\left(1234\right)}}{\frac{1}{{\mathrm{.Math.}}_1}+\left({\phi }_{1,5}+{\phi }_{2,5}+{\phi }_{3,5}+{\phi }_{4,5}\right)\left(\frac{1}{{\mathrm{.Math.}}_2}-1\right)}& \left(7\right)\end{array}$

(34) Since the raw material on the surface of the material is not a gray body, it shall be multiplied by a correction coefficient K.

(35) The heat flow is multiplied by time t, i.e. the heat H transferred in time t.

(36) In the time t, the temperature increase of the unit weight is:

(37) $\begin{array}{cc}T=\frac{\mathrm{Kt}\left(F_5{E}_{b5}-F_5{E}_{b\left(1234\right)}\right)}{\frac{c}{{\epsilon }_1}+\left({\phi }_{1,5}+{\phi }_{2,5}+{\phi }_{3,5}+{\phi }_{4,5}\right)\left(\frac{1}{{\epsilon }_2}-1\right)c}& \left(8\right)\end{array}$

(38) The temperature increase of a single walnut kernel is
T.sub.0=T×m.sub.0  (9)

(39) The average volume expansion coefficient is

(40) $\begin{array}{cc}\beta =\frac{1}{V}\times \frac{\mathrm{dV}}{\mathrm{dt}}& \left(10\right)\end{array}$

(41) The walnut kernels and the red coats are different in linear expansion coefficients. When the heat amount in the unit time is identical, the expansion volumes may be different, and at this time, the walnut kernels may be separated from the red coats adhered on the surfaces of the walnut kernels.

(42) A conveyor belt has an effective heating length of α, a width of b and a heating rate of v. The mass of the walnut kernels heated in the unit area is m, and the heating efficiency of the walnut kernels is

(43) $\begin{array}{cc}\alpha =\frac{m}{m_0}& \left(11\right)\end{array}$

(44) In the above formulas: c—material specific heat capacity, J(kg.Math.K); G—projection radiation force, W/m.sup.2; F—area, m.sup.2; φ—angular coefficient, %; J—effective radiation force, W/m.sup.2; Q—heat flow, ε1—material emission rate, %; ε2—cylinder wall emission rate, %; E—radiation force, W/m.sup.2; t—time, S; H—heat, J; T—temperature, ° C.; m.sub.0—mass of the single walnut kernel, Kg; β—average volume expansion coefficient; α—walnut kernel heating efficiency, grains/second; and v—heating rate, m/s.

(45) The electromotive force of AC power used by the heating apparatus is set as:
e.sub.1=n.sub.1BSω sin ωt  (12)

(46) Then, the induced electromotive force on the electromagnetic coil is:
e.sub.2=n.sub.2BSω cos ωt  (13)

(47) The induced electromotive force generated by the eddy current is e.sub.3=e.sub.1.

(48) Therefore, the eddy current

(49) $\begin{array}{cc}I=\frac{\mathrm{nBS}\omega }{R}\sin \omega t& \left(14\right)\end{array}$

(50) The power of the eddy current is

(51) $\begin{array}{cc}P=\frac{n^2{B}^2{S}^2{\omega }^2}{R}{\sin }^2\omega t& \left(15\right)\end{array}$

(52) The heat value is
Q=∫.sub.0.sup.tPdt  (16)

(53) In time t, the temperature increase is
T=Q/c  (17)

(54) In the above formulas: c—liner wall specific heat capacity, J/(kg.Math.K); e—electromotive force, V; n.sub.1—number of turns of the generator coil; n.sub.2—number of turns of electromagnetic coil; B—magnetic induction strength, T; S—area; ω—AC power angular frequency; I—eddy current intensity, A; P—eddy current power, W; Q—heat, J; R—liner wall resistance, Ω; t—time, S.

(55) According to the electromagnetic heating technology (abbreviated as EH), an electromagnetic coil I-02 wound on the thermal insulation layer I-03 generates an alternating magnetic field; at this moment, the radiation liner I-07 which is made of metal is equivalent to be wrapped in the electromagnetic coil; the surface of the liner wall can be regarded as cutting the alternating magnetic lines to generate the alternating current (i.e. eddy current); the eddy current causes the high-speed irregular movement of metal atoms on the surface of the liner wall; and the atoms collide and rub with one another to generate the heat, thereby playing a role in heating the materials. The wound electromagnetic coil I-02 is characterized by being capable of uniformly and directly radiating the materials in the liner wall at 360°. Compared with the resistance heating, the electromagnetic heating is high in heat conversion rate and low in heat loss and is a heating mode with a conversion rate of 95%. Compared with the microwave heating, the electromagnetic heating does not damage the internal structure of the heated material, so that the loss of nutrients can be reduced, and no radiation harming the human body is produced. In addition, the electromagnetic heating realizes the electric isolation between a heating body and a main circuit, so that the electricity leakage phenomenon caused by the damage of the insulation can be avoided, and the safety can be greatly improved.

(56) The size of the eddy current is related to the electric conductivity, magnetic conductivity and geometric dimension of the metal material. The eddy current consumes the electric energy. In the induction heating apparatus, the eddy current is used to heat the metal. The size of the eddy current is related to parameters such as resistivity ρ, magnetic conductivity μ and thickness h of the metal, distance δ between the metal and the coil, and exciting current angular frequency ω, etc. A calculation formula of the eddy current is as follows:

(57) $\begin{array}{cc}J=-\frac{\sigma }{2\pi r}\frac{d{\Phi }_m}{\mathrm{dt}}\left(A/m^2\right)& \left(18\right)\end{array}$

(58) In the formula: J is eddy current, formed by magnetic flux in a circle having a radius of r, on the surface of the heating body; σ is electric conductivity of the heating body metal; and Φ.sub.m is magnetic flux in the circle having the radius of r.

(59) A heated body is combined with the electromagnetic induction heating coil, and a gap of 2 to 4 mm is reserved between the heated body and the electromagnetic induction heating coil. When the magnetic lines in the magnetic field pass through the liner wall, the magnetic lines are cut to generate a plurality of small eddy currents, so that the liner wall instantaneously generates heat locally. A theoretical depth of the eddy current is δ.

(60) 0$\begin{array}{cc}\delta =\frac{1}{2\pi }\sqrt{\frac{\rho }{\mu f}}\left(\mathrm{mm}\right)& \left(19\right)\end{array}$

(61) In the formula, ρ is resistivity (10.sup.−8Ω.Math.mm); f is frequency (HT); μ is magnetic conductivity (4π×10.sup.−7T/A). In actual application, according to the stipulation, the depth when I(x) is, reduced to 1/e of the surface eddy current intensity is “current penetration depth”, and by calculation, the heat of 86.5 is generated in a thin layer at a depth of δ.

(62) A metal circular plate having a thickness of h, resistivity of ρ and radius of a is disposed in a magnetic field alternating over time and having the magnetic induction intensity of B. In order to calculate the heat power, the metal circular plate is segmented into a plurality of metal thin cylinders having a width of dr, perimeter of 2πr and thickness of h along a current direction, and an induced electromotive force of any one of thin cylinders is

(63) $\begin{array}{cc}\epsilon =-\frac{d\varphi }{\mathrm{dt}}=-\pi r^2\frac{\mathrm{dB}}{\mathrm{dt}}& \left(20\right)\end{array}$

(64) Resistance of the thin cylinder is

(65) $\begin{array}{cc}R=\rho \frac{2\pi r}{h.Math.\mathrm{dr}}& \left(21\right)\end{array}$

(66) Therefore, the instantaneous heat power of the thin cylinder is

(67) $\begin{array}{cc}\mathrm{dp}=\frac{{\epsilon }^2}{R}=\frac{\pi {\mathrm{hr}}^3.Math.\mathrm{dr}}{2\rho }\left(\frac{\mathrm{dB}}{\mathrm{dt}}\right)& \left(22\right)\end{array}$

(68) The instantaneous heat power of the eddy current of the entire metal circular plate is

(69) supposing B=B.sub.0 sin ωt, then

(70) $\begin{array}{cc}\frac{\mathrm{dB}}{\mathrm{dt}}=B_0\cos \omega t& \left(23\right)\end{array}$

(71) The average heat power of the eddy current in one period is

(72) $\begin{array}{cc}\stackrel{\_}{p}=\frac{1}{T}{\int }_0^r\mathrm{pdt}=\frac{\pi {\mathrm{ha}}^4}{8\rho }{B}_0^2{\omega }^2\frac{1}{T}{\int }_0^r{\cos }^2\omega \mathrm{tdt}=\frac{\pi h}{16\rho }{B}_0^2{\omega }^2{a}^4& \left(24\right)\end{array}$

(73) It can be seen from the above formula that in order to obtain large heat power output, the high-frequency alternating electromagnetic field must be selected to generate the large magnetic induction intensity, and the resistivity of the metal shall be small.

(74) Through the theoretical analysis and by searching the data, an optimization solution is determined for the thickness of the radiation liner I-07. Supposing
Q.sub.Heat loss=Q.sub.Dissipation+Q.sub.Storage  (25)

(75) Then

(76) $\begin{array}{cc}{Q}_{\mathrm{Heat}\mathrm{loss}}\approx \frac{\lambda }{s}\Delta \mathrm{tF}+\mathrm{Fs}\mathrm{\rho \Delta }\left(\mathrm{Ct}\right)\frac{1}{\tau }& \left(26\right)\end{array}$

(77) In the formula, π—heat conduction coefficient of the material, kJ/m.Math.h.Math.° C.

(78) Δt—temperature difference between the radiation liner temperature and the room temperature, ° C.

(79) S—thickness of the radiation liner, m

(80) F—average heat dissipation area of the radiation liner, m.sup.2

(81) ρ—volume weight of the material of the radiation liner, kg/m.sup.3

(82) C—specific heat capacity of the material of the radiation liner, kJ/kg.Math.° C.

(83) τ—heating time

(84) when

(85) $\begin{array}{cc}\frac{{\mathrm{dQ}}_{\mathrm{Heat}\mathrm{loss}}}{\mathrm{ds}}=0,& \left(27\right)\end{array}$

(86) Then

(87) $\begin{array}{cc}{S}_{\mathrm{Beat}}=\sqrt{\frac{\mathrm{\lambda \Delta }t\tau }{\mathrm{\rho \Delta }\left(\mathrm{ct}\right)}}& \left(28\right)\end{array}$

(88) FIGS. 4(a), (b) and (c) are respectively an isometric diagram, a left view and a top view of a transfer apparatus. The transfer apparatus mainly plays a role in transferring the material, assisting the heating, and assisting the separation of impurities after the heating. The transfer apparatus may drive the materials to move in a square barrel structure. By using an electromagnetic heating technology, walnut kernels are heated by using the heat generated by angle steel on both ends of a conveyor belt II-19. After the heating is completed, since the walnut kernels and the red coats are different in heat expansion coefficients, the red coats on the surfaces of the walnut kernels are basically stripped and can be fundamentally separated in the subsequent step. A plurality of supporting shafts such as a supporting shaft 3 II-16 are fixed on one side, away from the materials, of the conveyor belt II-9 through the angle steel and are uniformly distributed to ensure the stability of the conveyor belt II-19 during the movement, so that the walnut kernels stably pass through the heating apparatus, thereby achieving a purpose of uniform heating to certain extent. A transfer shaft 1 II-12 and a transfer shaft 2 II-13 are fixed on an upper end and a lower end forming an angle with the vertical direction and having a height difference, so that the heated materials can be kept away from the conveyor belt for a certain distance when transferred downwards, thereby increasing a moving space of the walnut kernels and foreign matters, and facilitating the subsequent procedures. Power outputted by a stepper motor II-01 is transferred to a belt pulley 1 II-08 through, a key 1 II-02, a transmission belt 1 II-06 is driven by the belt pulley 1 II-08 to move, then a belt pulley 2 II-09 is driven by the conveyor belt to move to transfer the power to the belt pulley 3 II-10, a belt pulley 3 II-10 transfers the power successively to a key 2 II-03 and a key 3 II-04, and the key 3 II-04 drives the belt pulley 3 II-10 to rotate and further drives a transmission belt 2 II-07 to move. The transmission belt 2 II-07 transfers the power successively to a belt pulley 4 II-11 and a key 4 II-05, the key 4 II-05 drives a transfer shaft 2 II-13 to rotate, and the key 2 II-03 drives the transfer shaft 1 II-12 to rotate and further drives the conveyor belt II-19 to move, thereby transferring the materials. The implementation mode is less in energy consumption and high in energy utilization efficiency. The conveyor belt II-19 surrounds a supporting shaft 1 II-14, a supporting shaft 2 II-15 and a supporting shaft II-16. The conveyor belt II-19 is driven by the transfer shaft 1 and the transfer shaft 2 to move. The conveyor belt is made of stainless steel material. The walnut kernels are uniformly scattered on the conveyor belt after passing through a feeding apparatus. Meshes are uniformly formed in the belt. The stainless steel material does not generate heat in the electromagnetic heating process, so that the walnut kernels are ensured to be uniformly heated and prevented from being burned. Supporting angle steels II-20 are orderly arranged on both ends of the conveyor belt II-19. In one aspect, the supporting angle steels are connected with the supporting shaft to play a supporting role and play a role in fixing the apparatus. In another aspect, the supporting angle steels are uniformly distributed on both ends of the conveyor belt to generate heat in the electromagnetic heating process to heat the walnut kernels, so that the walnut kernels are uniformly heated. A supporting I-shaped steel II-21 is mounted at the lower end of the conveyor belt and on the periphery of a motor through the angle steel to play a role in fixing the supporting mechanism.

(89) It is supposed that the conveyor belt has an effective heating length of a, a width of b and a transmission speed of c.

(90) FIGS. 5(a), (b) and (c) are respectively a left view of a continuous feeding mechanism pulley, a sectional view of the continuous feeding mechanism pulley and an isometric diagram of the continuous feeding mechanism pulley. The adjustable continuous feeding mechanism pulley apparatus is an embodiment of a feeding solution. The apparatus is disposed at a feeding end of the conveyor belt II-19. A feeding box III-10 is disposed above a continuous feeding mechanism pulley III-02, so that materials in the feeding box III-10 enter a continuous feeding mechanism formed by a post pin III-04 and a continuous feeding mechanism pulley hole under the effect of gravity. Under the rotating driving of the continuous feeding mechanism pulley III-02, the materials in the continuous feeding mechanism are transported out of the feeding box III-10. For the walnut kernels, since the walnut kernels are inconsistent in size, the continuous feeding mechanism shall be designed according to a maximum size of the walnut kernel, and the walnut kernels shall be prevented from blocking in the continuous feeding mechanism. When the post pin III-04 passes through a slide block III-03 inside the continuous feeding mechanism pulley apparatus, the post pin III-04 moves outwards along the continuous feeding mechanism to push out the materials in the continuous feeding mechanism. The post pin shall be designed to be cooperated with the continuous feeding mechanism, which shall not only facilitate the reciprocating movement of a plunger and reduce the friction, but also shall prevent the small walnut kernels from blocking gaps and resulting in difficulty in cleaning. After the post pin III-04 passes through the slide block III-03, under the action of a spring III-06, the post pin III-06 is returned and forms the continuous feeding mechanism again together with the continuous feeding mechanism pulley III-02. Through the constant-speed rotation of the continuous feeding mechanism pulley III-02, the materials in the feeding box III-10 can be uniformly laid on the conveyor belt II-19. The position of the slide block III-03 can be adjusted by adjusting an eccentric sleeve III-07, so that the volume of the continuous feeding mechanism is changed, i.e. the feeding amount of the continuous feeding mechanism pulley apparatus is changed; and the eccentric sleeve is adjusted by an adjusting rotating shaft III-08, and the rotation of the adjusting rotating shaft III-08 generates a torque which is transferred to the eccentric sleeve III-07 through a key III-09, so that an adjusting effect can be achieved. When in rotation, the post pin III-04 tightly rubs against a positioning shaft sleeve III-05 under the action of the spring III-06. In order to ensure that the post pin III-04 can successfully pass through the slide block III-03 without being stuck when rotating, contact portions of the slide block III-03 and post pin III-04 are made to be in arc contact, and the friction resistance shall be reduced as far as possible. Meanwhile, the friction force between the post pin III-04 and the positioning shaft sleeve III-05 shall be minimized, which requires the elastic force of the spring to be minimized so as to reduce the pressure between the post pin III-04 and the positioning shaft sleeve III-05. The seed protection plate not only plays a role in preventing the materials brought out by the continuous feeding mechanism from splashing under the effect of a centripetal force, but also can ensure that the materials brought out by the continuous feeding mechanism can accurately and stably fall on the conveyer belt II-19, thereby playing a role in guiding the materials.

(91) FIG. 6 is an isometric diagram of a grooved pulley. The apparatus is another embodiment of the feeding solution and is disposed at a material inlet to uniformly convey materials onto the crawler belt. The materials are firstly placed on a feeding plate III-11. Since the feeding plate is obliquely disposed, the materials slide downwards under the effect of the gravity. When the materials are piled up in front of a distributing plate, a grooved pulley core II-15; rotates to drive a grooved pulley III-14 to rotate intermittently. When the grooved pulley III-14 rotates, a rotating plate III-12 is driven to shift and transfer the materials downwards. In a time interval when the grooved pulley III-14 stops rotating, the materials are piled up in front of the rotating plate III-12 to prepare for the rotating feeding of the grooved pulley. When the materials are shifted downwards by the rotating plate III-12, the materials are uniformly spread along an axial direction of the rotating plate III-12 and slide downwards again under the effect of the gravity. The rotating plate III-12 plays a role mainly in spreading the materials, which are not uniformly spread on the feeding plate III-11, along the axial direction of the rotating plate III-12. To prevent the pileup of the materials in the sliding process, the feeding plate is segmented by the distributing plates III-13 into a plurality of different areas along a flowing direction of the materials, so that the shifted materials enter different segmented gliding areas and fall onto the conveyor belt II-19. The main function of the apparatus is to uniformly lay the materials onto the conveyor belt II-19. By using the intermittent rotation characteristic of the grooved pulley, when the grooved pulley III-14 rotates, the materials are transported by the rotating plate III-12 onto the conveyor belt II-19. Due to the rotation of the conveyor belt II-19, when the grooved pulley rotates to feed the material at the next time, the previous materials can be just transported completely by adjusting the feeding speed of the conveyor belt II-19. Therefore, the materials can be continuously and uniformly laid on the conveyor belt II-19. An inclination angle of the whole apparatus is 45°, so as to ensure that after the rotating plate III-12 rotates for an angle, a next plate leaf is located horizontally, and the materials are ensured to fall on the plate leaf without gliding.

(92) It should be noted that under the inspiration of the working principle of the present invention, those skilled in the art replace the electromagnetic coil with heating apparatuses in other forms, such as resistance wire heating in direct contact with the materials, which has high energy consumption, is not uniform in heating and easy to cause heat loss and may directly burn the materials without proper treatment; and microwave heating in indirect contact with the materials, which may damage the internal structure of the heated materials, increase the loss of nutrients such as grease proteins, and cause low nutrient content of the final material; and moreover, the microwave heating has radiation action, which may pose a health threat to operators to certain extent. The above heating mechanisms are simple replacements without the need of contributing creative labor and shall fall within the protection scope of the present invention. The electromagnetic heating mechanism of the present invention is an optimum solution.

(93) By adopting the apparatus disclosed in the present invention, the walnut kernels are uniformly heated through the electromagnetic heating and the conveyor belt. The red coats and the walnut kernels are deformed to different degrees and are not tightly fitted. Through a ventilating roller mechanism, the red coats and the walnut kernels are thoroughly separated. Under the subsequent action of an air blowing roller, the stripped red coats are blown away, and only final products—walnut kernels remain. In addition, the apparatus of the present application can be used to remove coats of other materials, such as peanuts, apricot kernels and other nuts with thin coats. Therefore, the application range of the device is enlarged, and the practical value of the device is improved.

(94) The above only describes preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.