Greenhouse

Abstract

A greenhouse comprises a support frame and a spray pipe including pipes and pipe joints, the pipe joint comprises a connecting pipe and two rotary sleeves, the two adjacent pipes are respectively inserted into the connecting pipe, ends of a first pipe are respectively sleeved with a sealing sleeve and a locking sleeve, and each of the ends of the first pipe is further sleeved with a washer. When the rotary sleeve is thread-tightened, the connecting pipe and the locking sleeve are capable of respectively abutting and pressing against two sides of the washer, under abutting and pushing of the rotary sleeve and limiting of the washer, the locking sleeve is capable of grasping the first pipe and forming an axial positioning with the rotary sleeve. An inner edge of an end surface of the connecting pipe has a sealing tapered surface capable of acting on the sealing sleeve.

Claims

1. A greenhouse comprising: a support frame; and a spray pipe fixed on the support frame, the spray pipe comprising a plurality of pipes and a pipe joint disposed between ends of two adjacent pipes, and the pipe joint comprising a connecting pipe and two rotary sleeves respectively screwed to and sleeved on two ends of the connecting pipe; wherein the two adjacent pipes are respectively inserted into the two ends of the connecting pipe, ends of a first pipe are respectively sleeved with a sealing sleeve and a locking sleeve, and the sealing sleeve and the locking sleeve are located in a corresponding rotary sleeve of the two rotary sleeves; wherein each of the ends of the first pipe is further sleeved with a washer made of rigid material, the washer is located between the connecting pipe and the locking sleeve, an inner edge of an end surface of the connecting pipe has a sealing tapered surface, the sealing sleeve is located between the connecting pipe and the washer; wherein when the rotary sleeve is thread-tightened, the connecting pipe and the locking sleeve are capable of respectively abutting and pressing against two sides of the washer; wherein when the connecting pipe is abutted and pressed against the washer, the sealing tapered surface is capable of acting on the sealing sleeve, so that the sealing sleeve is compression-tightened between the connecting pipe, the washer, and the first pipe; and wherein under the abutting and pushing of the rotary sleeve and under the limiting of the washer, the locking sleeve is capable of grasping the first pipe tightly and forming an axial positioning with the rotary sleeve;

2. The greenhouse as claimed in claim 1, wherein when the end surface of the connecting pipe is abutted and pressed against an end surface of the washer, the sealing sleeve is compression-tightened between the sealing tapered surface of the connecting pipe, the end surface of the washer, and an outer peripheral surface of the first pipe.

3. The greenhouse as claimed in claim 2, wherein a width of the end surface of the connecting pipe is smaller than a width of the end surface of the washer, when the end surface of the connecting pipe is pressed against an outer edge of the end surface of the washer, a sealing recess is formed between the sealing tapered surface and the end surface of the washer, and the sealing sleeve is compression-tightened in the sealing recess.

4. The greenhouse as claimed in claim 3, wherein an outer diameter of the first pipe is smaller than an inner diameter of the connecting pipe, an outer peripheral surface of one end of the sealing sleeve facing the connecting pipe has a pressing tapered surface circumferentially, when the rotary sleeve is thread-tightened, the sealing tapered surface is capable of pressing against a larger end of the pressing tapered surface, so that an end surface of the sealing sleeve is pressed against the end surface of the washer, and a smaller end of the pressing tapered surface is embedded between an inner peripheral surface of the connecting pipe and the outer peripheral surface of the first pipe.

5. The greenhouse as claimed in claim 1, wherein a first end of the rotary sleeve is sleeved on the connecting pipe, and an inner peripheral surface of a second end of the rotary sleeve has an inward protruding locking portion, the locking sleeve is located between the locking portion and the first pipe, when the locking sleeve is pressed against the washer, the locking sleeve is capable of contracting in a radial direction and grasping the first pipe tightly under an action of the locking portion.

6. The greenhouse as claimed in claim 5, wherein an end surface of the locking portion facing the connecting pipe is a limiting surface, the washer is located between the end surface of the connecting pipe and the limiting surface, a width D1 of the end surface of the washer is greater than a width D2 of the limiting surface, when the rotary sleeve is thread-tightened, an end surface of the locking sleeve is pressed against the end surface of the washer and is near an inner edge of the washer.

7. The greenhouse as claimed in claim 5, wherein an inner peripheral surface of the locking portion and an outer peripheral surface of the locking sleeve are both tapered surfaces, an end of the inner peripheral surface of the locking portion with a larger diameter and an end of the outer peripheral surface of the locking sleeve with a larger diameter both face toward the connecting pipe, and a taper of the inner peripheral surface of the locking portion is greater than a taper of the outer peripheral surface of the locking sleeve.

8. The greenhouse as claimed in claim 7, wherein the locking sleeve is a plastic sleeve, the locking sleeve has a slit penetrating through end surfaces at two ends along an axial direction, an inner peripheral surface of the locking sleeve is a straight cylindrical surface, and a plurality of ribbed grips in a ring shape are arranged sequentially along an axial direction on the inner peripheral surface of the locking sleeve.

9. The greenhouse as claimed in claim 1, wherein a plurality of sprinklers are fixedly connected on the spray pipe, each of the sprinklers includes a body with a first end fixedly connected on the spray pipe and a blocking plate, inside the body is provided with a spray cavity, the spray cavity communicates with an inner hole of the spray pipe, an end surface of a second end of the body is provided with a spray hole communicating with the spray cavity, an adjusting screw is vertically fixed on a side of the blocking plate, the adjusting screw extends into the spray hole and is screwed on the body, an outlet gap is formed between an outer peripheral surface of the adjusting screw and a hole wall of the spray hole, and a spray gap is formed between the side of the blocking plate and an outer end surface of the body.

10. The greenhouse as claimed in claim 9, wherein the body comprises a spray seat and a nozzle that are both cylindrical, the spray seat is fixedly connected on the spray pipe by fasteners, an end surface of the spray seat is provided with a pipe-shaped pipe connecting portion communicating with the spray cavity, a connecting hole is provided on a side wall of the spray pipe, the pipe connecting portion is inserted into the connecting hole and communicates with the inner hole of the spray pipe, the spray hole is located at one end of the nozzle, another end of the nozzle is screwed into the spray seat, an inner wall of the nozzle has an elongated mounting plate along a radial direction, the mounting plate has a cylindrical flow limiter, the flow limiter and the spray hole are disposed coaxially, a flow limiting gap is formed between an outer edge of a lower end of the flow limiter and an edge of an inner end hole opening of the spray hole, and the adjusting screw passes through an inner hole of the flow limiter and is thread-connected with the flow limiter.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a perspective view of one embodiment of a greenhouse;

[0024] FIG. 2 is an enlarged view of Section A in FIG. 1;

[0025] FIG. 3 is an exploded view of one embodiment of a pipe joint;

[0026] FIG. 4 is a partial sectional view of a structure of one embodiment of the pipe joint;

[0027] FIG. 5 is an enlarged view of Section B in FIG. 4;

[0028] FIG. 6 is an enlarged view of Section C in FIG. 1;

[0029] FIG. 7 is a transverse partial sectional view of a structure of one embodiment of a sprinkler; and

[0030] FIG. 8 is a longitudinal partial sectional view of a structure of one embodiment of the sprinkler.

DETAILED DESCRIPTION OF THE INVENTION

[0031] The technical solutions of the invention are further described below with reference to the specific embodiments of the invention in conjunction with the accompanied drawings, but the invention is not limited to the embodiments.

[0032] As shown in FIG. 1, one embodiment of a greenhouse comprises a support frame 1, the support frame 1 is formed by connecting a plurality of rods 11, a spray pipe 2 is fixed on a side and a top of the support frame 1, a lower end of the spray pipe 2 located on the side of the support frame 1 is used to connect with a water source, and an upper end of the spray pipe 2 located on the side of the support frame 1 is connected to the spray pipe 2 disposed horizontally at the top of the support frame 1. As shown in FIG. 2, the spray pipe 2 includes a plurality of pipes 21 and pipe joints 3 disposed between ends of two adjacent pipes 21, and a sprinkler 22 is fixed on a first pipe 21 for spraying water downward. As shown in FIGS. 3 and 4, the pipe joint 3 includes a connecting pipe 31 and two rotary sleeves 32, first ends of the two rotary sleeves 32 are respectively screwed to and sleeved on two ends of the connecting pipe 31, and inner peripheral surfaces of second ends of the rotary sleeves 32 have an inward protruding locking portion 321 respectively, and the ends of the two adjacent pipes 21 respectively pass through the locking portions 321 of the two rotary sleeves 32 and are inserted into the two ends of the connecting pipe 31. Ends of the first pipe 21 are respectively sleeved with a washer 35 and a locking sleeve 34, the washer 35 is made of rigid material, preferably made of plastic material. The washer 35 is located between the end of the connecting pipe 31 and the locking sleeve 34, and the locking sleeve 34 is located on an inner side of the locking portion 321. When the rotary sleeve 32 is thread-tightened, the connecting pipe 31 and the locking sleeve 34 are capable of respectively abutting and pressing against two sides of the washer 35; under the abutting and pushing of the rotary sleeve 32 and under the limiting of the washer 35, the locking sleeve 34 is capable of grasping the first pipe 21 tightly and forming an axial positioning with the rotary sleeve 32. A sealing sleeve 33 is further sleeved on the first pipe 21, the sealing sleeve 33 is located between the connecting pipe 31 and the washer 35, and an inner edge of an end surface of the connecting pipe 31 has a sealing tapered surface 311 along a circumferential direction. When the connecting pipe 31 is abutted and pressed against the washer 35, the sealing tapered surface 311 is capable of acting on the sealing sleeve 33, so that the sealing sleeve 33 is compression-tightened between the connecting pipe 31, the washer 35, and the first pipe 21.

[0033] Specifically, as shown in FIG. 5, a width D2 of the end surface of one embodiment of the connecting pipe 31 is smaller than a width D1 of the end surface of the washer 35, when the end surface of the connecting pipe 31 is pressed against an outer edge of the end surface of the washer 35, a sealing recess 312 is formed between the sealing tapered surface 311 and the end surface of the washer 35, and a width of the sealing recess 312 gradually decreases radially outward. An outer diameter of the first pipe 21 is smaller than an inner diameter of the connecting pipe 31, an outer peripheral surface of one end of the sealing sleeve 33 facing the connecting pipe 31 has a pressing tapered surface 331 circumferentially, when the rotary sleeve 32 is thread-tightened, and the end surface of the connecting pipe 31 is pressed against the end surface of the washer 35, the sealing tapered surface 311 is capable of pressing against a larger end of the pressing tapered surface 331, so that an end surface of the sealing sleeve 33 is pressed against the end surface of the washer 35. The sealing sleeve 33 has a cylindrical outer peripheral surface being embedded into the sealing recess 312, and a smaller end of the pressing tapered surface 331 is embedded between an inner peripheral surface of the connecting pipe 31 and an outer peripheral surface of the first pipe 21; that is, the sealing sleeve 33 is compression-tightened between the sealing tapered surface 311 of the connecting pipe 31, the end surface of the washer 35, and the outer peripheral surface of the first pipe 21. An end surface of the locking portion 321 facing the connecting pipe 31 is a limiting surface 322, the washer 35 is located between the end surface of the connecting pipe 31 and the limiting surface 322, a width D1 of the end surface of the washer 35 is greater than a width D2 of the limiting surface 322, when the rotary sleeve 32 is thread-tightened, an end surface of the locking sleeve 34 is pressed against the end surface of the washer 35 and is near an inner edge of the washer 35. The locking sleeve 34 is a plastic sleeve, an end of the locking sleeve 34 facing the washer 35 has an abutting rim 343 circumferentially to increase a width of the end surface of the locking sleeve 34 for abutting against the washer 35 to ensure that the locking sleeve 34 is still capable of abutting against the washer 35 stably after the locking sleeve 34 contracts radially. The locking sleeve 34 has a slit 341 penetrating through end surfaces at two ends along an axial direction, an inner peripheral surface of the locking portion 321 and an outer peripheral surface of the locking sleeve 34 are both tapered surfaces, an end of the inner peripheral surface of the locking portion 321 with a larger diameter and an end of the outer peripheral surface of the locking sleeve 34 with a larger diameter both face toward the connecting pipe 31, and a taper of the inner peripheral surface of the locking portion 321 is greater than a taper of the outer peripheral surface of the locking sleeve 34. An inner peripheral surface of the locking sleeve 34 is a straight cylindrical surface before the locking sleeve 34 is pressed and deformed, and a plurality of ribbed grips 342 in a ring shape are arranged sequentially along an axial direction on the inner peripheral surface of the locking sleeve 34.

[0034] As shown in FIG. 6, FIG. 7, and FIG. 8, one embodiment of the sprinkler 22 includes a body 4 and a blocking plate 5. The body 4 comprises a spray seat 41 and a nozzle 42 that are both cylindrical. An upper end of the spray seat 41 is fixed on the first pipe 21, an upper end of the nozzle 42 is inserted into the spray seat 41 from bottom upward, the nozzle 42 is thread-connected with the spray seat 41, a sealing ring 44 is further sleeved between the spray seat 41 and the nozzle 42, and a spray cavity 43 is formed between the nozzle 42 and the spray seat 41. The spray cavity 43 communicates with an inner hole of the first pipe 21, and a spray hole 421 is disposed at a lower end surface of the nozzle 42. An adjusting screw 51 is vertically fixed on a side of the blocking plate 5, the adjusting screw 51 extends into the spray hole 421 and is screwed on the body 4, an outlet gap 6 is formed between an outer peripheral surface of the adjusting screw 51 and a hole wall of the spray hole 421, and a spray gap 7 is formed between the side of the blocking plate 5 and an outer end surface of the body 4. Specifically, an inner wall of the nozzle 42 has an elongated mounting plate 422 along a radial direction, the mounting plate 422 has a cylindrical flow limiter 423, and the flow limiter 423 and the spray hole 421 are disposed coaxially. A flow limiting gap 424 is formed between an outer edge of a lower end of the flow limiter 423 and an edge of an inner end hole opening of the spray hole 421, and the adjusting screw 51 passes through the spray hole 421 along a center line direction of the spray hole 421 and is thread-connected into an inner hole of the flow limiter 423. The outlet gap 6 is evenly disposed around the adjusting screw 51 in a circumferential direction. An outer diameter of the blocking plate 5 is smaller than an outer diameter of the nozzle 42, and the outer diameter of the blocking plate 5 is greater than an inner diameter of the spray hole 421. An edge of an end surface of the nozzle 42 has an arcuate guide surface 425 along a circumferential direction. The guide surface 425 and the end surface of the nozzle 42 have a smooth transition. The spray seat 41 is fixedly connected on the first pipe 21 by fasteners, an end surface of the spray seat 41 is provided with a pipe-shaped pipe connecting portion 411 communicating with the spray cavity 43, a connecting hole 211 is provided on a side wall of the first pipe 21, the pipe connecting portion 411 is inserted into the connecting hole 211 and communicates with an inner cavity of the first pipe 21. The end surface of the spray seat 41 is provided with a sealing groove 412 surrounding the pipe connecting portion 411 in a circumferential direction, a sealing pad 413 is sleeved inside the sealing groove 412, and the sealing pad 413 is pressed tightly against the outer peripheral surface of the first pipe 21. The fastener is a hoop 414 fixedly sleeved on the first pipe 21, and the spray seat 41 and one of hoop plates of the hoop 414 are integrally formed.

[0035] The specific embodiments described herein are merely illustrative of the scope of the invention. Technicians skilled in the art to which the invention pertains can make various modifications or additions to the specific embodiments described or replace them in a similar manner, without departing from the scope of the invention or beyond the scope defined by the appended claims.

[0036] Although the technical terms support frame 1, rod 11, spray pipe 2, and the like are used more frequently herein, the possibility of using other technical terms is not excluded. These technical terms are merely used to describe and explain the nature of the invention more conveniently; construing them as any additional limitation is contrary to the scope of the invention.

LIST OF REFERENCED PARTS

[0037] 1 support frame [0038] 11 rod [0039] 2 spray pipe [0040] 21 pipe [0041] 211 connecting hole [0042] 22 sprinkler [0043] 3 pipe joint [0044] 31 connecting pipe [0045] 311 sealing tapered surface [0046] 312 sealing recess [0047] 32 rotary sleeve [0048] 321 locking portion [0049] 322 limiting surface [0050] 33 sealing sleeve [0051] 331 pressing tapered surface [0052] 34 locking sleeve [0053] 341 slit [0054] 342 ribbed grip [0055] 343 abutting rim [0056] 35 washer [0057] 4 body [0058] 41 spray seat [0059] 411 pipe connecting portion [0060] 412 sealing groove [0061] 413 sealing pad [0062] 414 hoop [0063] 42 nozzle [0064] 421 spray hole [0065] 422 mounting plate [0066] 423 flow limiter [0067] 424 flow limiting gap [0068] 425 guide surface [0069] 43 spray cavity [0070] 44 sealing ring [0071] 5 blocking plate [0072] 51 adjusting screw [0073] 6 outlet gap [0074] 7 spray gap