Roller Press Capable of Applying Electric Field

Abstract

A roller press capable of applying an electric field comprises a base, a frame (12), press rollers, an inter-roller distance adjustment device (11), a speed adjustment device (122), a voltage application device, a feed deflector (19), and a discharge device. A surface of the press roller is made of an electrically-conductive material, and an electric field is created when a voltage is applied to the press roller. In the roller press, an alternating or direct current electric field is applied between the press rollers to create an electrochemical action, such that particles or a solution in a system is induced to undergo a physical or chemical change, thereby enhancing interaction therebetween, and accordingly increasing grinding and dispersion efficiency of a solid-liquid dispersion system.

Claims

1. A roller press machine capable of applying an electric field, which comprises a base, a frame (12), a press roller, a press roller space adjusting device (11), a speed adjusting device (122), a voltage applying device, a feeding baffle (19) and a discharging device, characterized in that: a roller surface of said press roller is made of a conductive material and an electric field is formed by applying a voltage to said press roller.

2. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said press roller is mounted on said frame through a bearing, wherein said bearing is made of an insulating material.

3. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said press roller comprises a roller surface (35) at an outer layer thereof made of a conductive material, and a central axis (36) at an inner layer, wherein said central axis (36) is made of an insulating material.

4. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said press roller has a three-layer composite structure comprising a roller surface (35) at an outer layer thereof made of a conductive material, an insulating interlayer (37) at a middle thereof and a central axis (36) at an inner layer thereof, wherein said insulating interlayer (37) is made of an insulating material.

5. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said frame further comprises a brush fixing device (32), said brush fixing device (32) comprises a Y-shaped brush holder (33) and a graphite brush (34) at a lower end of said Y-shaped brush holder (33), wherein said graphite brush (34) is in contact with said roller surface (35) of said press roller.

6. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said conductive material is an iron-based alloy, a nickel-chromium alloy, a chromium carbide alloy, a high manganese alloy, a tungsten carbide alloy, a nickel-tungsten alloy, a titanium alloy, an aluminum alloy, a magnesium alloy, a copper alloy, or a nickel alloy.

7. The roller press machine capable of applying an electric field according to claim 2, characterized in that: said insulating material is polyamide, polytetrafluoroethylene, polyethylene, heat resistant epoxy resin, phenolic resin, polyoxymethylene, fluoroplastic, polyimide, silicone/polyphenylene sulfide, chlorinated polyether, zirconia or alumina.

8. The roller press machine capable of applying an electric field according to claim 1, characterized in that: a number of the press roller is at least two, and charges are applied between adjacently positioned press rollers to form an alternating current and a direct current electric field.

9. The roller press machine capable of applying an electric field according to claim 1, characterized in that: a number of the press roller is at least n+1, where n refers to an even number excluding 0, no charge is applied to the n-th press roller, charges are applied to press rollers adjacent to the n-th press roller to form an alternating current and a direct current electric field.

10. The roller press machine capable of applying an electric field according to claim 1, characterized in that: said press roller is mounted on the frame (12) through a bearing, said frame comprises a feeding device and a discharging device, said feeding device comprises the feeding baffle (19), said feeding baffle (19) is positioned at two sides of said press roller, said discharging device comprises a discharging plate (53) and a scraper (51), said scraper 51 is fixed on a top end of said discharging plate (53), thereby after a material is pressed by said press roller and is carried away by said press roller at an discharging end, the material is scraped by said scraper (51) and then flows out through said discharging plate (53).

11. The roller press machine capable of applying an electric field according to claim 4, characterized in that: said conductive material is an iron-based alloy, a nickel-chromium alloy, a chromium carbide alloy, a high manganese alloy, a tungsten carbide alloy, a nickel-tungsten alloy, a titanium alloy, an aluminum alloy, a magnesium alloy, a copper alloy, or a nickel alloy.

12. The roller press machine capable of applying an electric field according to claim 3, characterized in that: said insulating material is polyamide, polytetrafluoroethylene, polyethylene, heat resistant epoxy resin, phenolic resin, polyoxymethylene, fluoroplastic, polyimide, silicone/polyphenylene sulfide, chlorinated polyether, zirconia or alumina.

13. The roller press machine capable of applying an electric field according to claim 4, characterized in that: said insulating material is polyamide, polytetrafluoroethylene, polyethylene, heat resistant epoxy resin, phenolic resin, polyoxymethylene, fluoroplastic, polyimide, silicone/polyphenylene sulfide, chlorinated polyether, zirconia or alumina.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a schematic structural diagram showing the three-layer composite structure of a press roller of the roller press machine.

[0025] FIG. 2 is a schematic structural diagram of the roller press machine.

[0026] FIG. 3 is a schematic diagram showing a feeding baffle of the roller press machine.

[0027] FIG. 4 is a schematic structural diagram showing a discharging plate of the roller press machine.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0028] Referring to FIGS. 2, 3 and 4 of the drawings, the present invention provides a roller press machine capable of applying an electric field, which includes a base, a frame 12, a press roller, a press roller space adjusting device 11, a speed adjusting device 122, a voltage applying device, a feeding baffle 19 and a discharging device. The two adjacently positioned press rollers are electrically insulated, and a roller surface of the press roller is made of a conductive material.

[0029] The press roller is mounted on the frame 12 through a bearing. The frame include a feeding device and a discharging device. The feeding device comprises the feeding baffle 19. The feeding baffle 19 is positioned at two sides of the press roller. The discharging device comprises a discharging plate 53 and a scraper 51. The scraper 51 is affixed on a top end of the discharging plate 53. After the materials are pressed by the press roller and are carried out by the press roller at the discharging end, the materials are scraped by the scraper 51 and then flow out through the discharging plate 53.

[0030] The press roller is mounted on the frame 12 through a mechanical bearing. The rotational speed of the press roller is adjusted by a vector inverter 121. The spacing between the press rollers is adjusted by a rotary handle which is in close contact with the frame 12. The number of feeding baffles 19 is two, and the two feeding baffles 19 are positioned at two sides of the press roller at the feeding end, and is perpendicular to a roller surface and a lower end is in contact with the roller surface. The feeding baffle 19 is made of polytetrafluoroethylene, and its thickness is fixed on the steel frame by fixing screws, and the lower end is processed into a concave curved edge on two sides, so that it fits tightly with the roller surface.

[0031] The scraper 51 and the press roller at the discharge end define an angle, and the angle is 10° to 45°.

[0032] The frame further comprises a brush fixing device 32. The brush fixing device 32 comprises a Y-shaped brush holder 33, a graphite brush 34 provided at a lower end of the Y-shaped brush holder 33, and the graphite brush 34 is in contact with the roller surface 35 of the press roller.

[0033] The graphite brush 34 can press onto the roller surface, and of course, can also press onto the side of the roller, or even press onto the support shaft if the above design is a single-layer design.

[0034] During application, the graphite brush 34 is energized, the brush is in contact with the press roller, and a DC electric field can be applied like the press roller, and at the same time, the insulation design of the press roller can make the electric charge on the press roller only distribute on the surface of the press roller without shifting.

Embodiment 1

[0035] The number of the press rollers is at least two, and charges of different polarities are applied between adjacent press rollers.

[0036] Depending on the number of press rollers, there are a variety of electric field application methods. For example, when there are two or more press rollers, opposite polarity charges can be applied to adjacent press rollers. For example, if there are 4 press rollers, then the first and the third press rollers are applied with positive charge, and the second and the fourth press rollers are applied with negative charge.

Embodiment 2

[0037] The number of the press rollers is at least n+1, wherein n is an even number except 0, no charge is applied to the n-th press roller, different polarity charges are applied to the two press rollers adjacent to the n-th press roller.

[0038] When the number of press rollers is 3, 5, 7, 9 . . . , the manner of applying an electric field may be +, 0, −, 0, +, 0, −, 0 means no electric field is applied. That is, positive charges are applied to odd-numbered rollers such as 1, 3, and 5, and negative charges are applied to even-numbered rollers such as 2, 4, and etc.

[0039] Of course, the manner of applying an electric field can also be the same as in Embodiment 1, and an electric field of different polarity is disposed between two adjacent press rollers.

Embodiment 3

[0040] A three press rollers type is illustrated as an example. The adjacent press rollers are electrically insulated, and the roller surface of the press roller is made of a conductive material. In order to achieve electrical insulation between adjacent press rollers, the press rollers are fixed to the frame by bearings, and the bearings being made of insulating material.

[0041] The electric field can be applied in the form of +, +. That is, a positive charge is applied to the first and third press rollers, and a negative charge is applied to the second press roller.

[0042] The electric field application for the three press rollers can also be: +, 0, −. That is, no electric field is applied to the second press roller, and an electric field of opposite polarity is applied only to the first and third press rollers so that the press rollers have different charges.

Embodiment 4

[0043] As shown in FIG. 1, the press roller has a three-layer composite structure comprising a roller surface 35 at an outer layer made of a conductive material, an insulating interlayer 37 at the middle and a central axis 36 at an inner layer, and the insulating interlayer 37 is made of an insulating material.

Embodiment 5

[0044] The press roller comprises a roller surface 35 at an outer layer made of a conductive material, and a central axis 36 at an inner layer, and the central axis 36 is made of an insulating material.

[0045] Preferably, the conductive material refers to an iron-based alloy, a nickel-chromium alloy, a chromium carbide alloy, a high manganese alloy, a tungsten carbide alloy, a nickel-tungsten alloy, a titanium alloy, an aluminum alloy, a magnesium alloy, a copper alloy, or a nickel alloy.

[0046] Preferably, the insulating material refers to polyamide, polytetrafluoroethylene, polyethylene, heat resistant epoxy resin, phenolic resin, polyoxymethylene, fluoroplastic, polyimide, silicone/polyphenylene sulfide, chlorinated polyether, zirconia or alumina.