Pneumatic grain gate

Abstract

The utility model relates to the technical field of grain conveying, in particular to a grain pneumatic gate valve. Comprising a granary and a discharging valve detachably installed below the side wall of the granary, the discharging valve comprises a sleeve, a communicating pipe connecting the granary and the sleeve, a sealing block in an inner cavity of the sleeve and a pneumatic cylinder used for driving the sealing block to move, an air hole is formed in the top of the sleeve, and a sliding groove is formed in the side, close to the communicating pipe, of the inner wall of the sleeve; an interceptor plate matched with the sliding groove for use is fixedly arranged on the side wall of the sealing block, and one end of the bottom of the interceptor plate is located below the sealing block. While opening and closing are guaranteed, the sealing performance of the granary is guaranteed, grains are prevented from being clamped, and meanwhile the service life of the equipment is long.

Description

Technical Field

[0001] The utility model relates to the technical field of grain transportation, in particular to a grain pneumatic gate. Background Art

[0002] There are many types of grain switch valves on the market, including pneumatic valves, electric valves, manual valves, etc. Grain switch valves are mainly used in grain transportation operations in granaries.

[0003] There is a grain conveying valve in the prior art with publication number: CN213839606U, including a valve cavity arranged in a valve body, the valve cavity is respectively connected to an input port and an output port, a valve core is arranged in the valve cavity, the valve cavity is specifically a cylindrical cavity, the output port is a regular circular hole, the output port is vertically coaxial with the cylindrical cavity, the valve core is a cylinder, an annular groove is arranged in the middle section of the cylinder, a cone head coaxial with the cylinder is arranged at one end of the valve core, the aperture of the cylindrical cavity is larger than the aperture of the output port, a transition ring platform is arranged at the connecting port between the cylindrical cavity and the output port, a sliding sleeve is sleeved in the annular groove of the valve core, the sliding sleeve is provided with a flange clamped to the inner ring of the annular groove, the sliding sleeve body extends toward the cone head end, the outer diameter of the sliding sleeve is adapted to the inner diameter of the cylindrical cavity, a hydraulic cylinder is fixedly arranged on the valve body, and the piston rod of the hydraulic cylinder is connected to the valve core and drives it to move axially.

[0004] The above-mentioned equipment has the following defects when in use: 1. In order to ensure the sealing of the granary, the fitting clearance between the valve body and the valve core needs to be small. When the hydraulic cylinder drives the valve core to move, the inner cavity of the valve body located above the valve core will form a higher air pressure or negative pressure, affecting the opening and closing of the valve; 2. During the downward movement of the sliding sleeve, the transition ring is easy to get stuck in the grain, affecting the sealing of the granary, and it is also easy to damage the rubber edge. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In order to solve the above problems in the prior art, the utility model provides a pneumatic grain gate, which ensures the sealing of the granary while ensuring opening and closing, avoids grain from being stuck, and has a long service life.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] A pneumatic gate for grains, including a grain bin and a discharging valve detachably installed below the side wall of the grain bin, the discharging valve including a sleeve, a connecting pipe connecting the grain bin and the sleeve, a sealing block in the inner cavity of the sleeve, and a pneumatic cylinder for driving the sealing block to move, an air hole is provided at the top of the sleeve, a slide groove is provided at the inner wall of the sleeve near the connecting pipe, a cut-off plate used in conjunction with the slide groove is fixedly provided at the side wall of the sealing block, and one end of the bottom of the cut-off plate is located below the sealing block. While ensuring opening and closing, the sealing of the grain bin is ensured to avoid getting stuck in the grain, and the service life of the equipment is also long.

[0010] Preferably, a fixing plate is fixedly provided at one end of the connecting pipe away from the sleeve, and the fixing plate is connected to the granary by bolts.

[0011] Preferably, a plurality of connecting pipes are arranged at equal intervals in the longitudinal direction.

[0012] Preferably, a feed opening is detachably connected to the bottom of the sleeve via a connecting flange, and the feed opening is an arc-shaped structure.

[0013] (III) Beneficial effects

[0014] The utility model provides a pneumatic gate for grain, which has the following beneficial effects:

[0015] (1) Through the design of the intercepting plate, the connecting pipe can be blocked in advance to prevent the sealing block from squeezing the grain when it goes down, resulting in sealing defects and damage to the equipment.

[0016] (2) The equipment is easy to assemble or disassemble with the granary, and can also be installed with discharge ports or tees of different structures according to different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the structural diagram of the utility model;

[0018] Figure 2 This is the structural diagram of the discharge valve of the utility model;

[0019] Figure 3 This is a structural diagram of the sealing block and the intercepting plate installation of the utility model.

[0020] In the figure: 1. granary; 2. discharge valve; 201. sleeve; 202. connecting pipe; 203. sealing block; 204. pneumatic cylinder; 3. air hole; 4. slide; 5. intercepting plate; 6. fixing plate; 7. discharge port. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-3 As shown, the grain pneumatic gate of this embodiment includes a granary 1 and a discharging valve 2 detachably installed below the side wall of the granary 1, and the discharging valve 2 is used to discharge the grain inside the granary 1. The discharging valve 2 includes a sleeve 201, a connecting pipe 202 connecting the granary 1 and the sleeve 201, a sealing block 203 in the inner cavity of the sleeve 201, and a pneumatic cylinder 204 for driving the sealing block 203 to move. An air hole 3 is provided at the top position of the sleeve 201, and the air hole 3 is used to adjust the air pressure difference between the inside and outside of the sleeve 201. A chute 4 is provided on the inner wall of the sleeve 201 near the connecting pipe 202, and a cut-off plate 5 used in conjunction with the chute 4 is fixedly provided on the side wall of the sealing block 203, and the cut-off plate 5 can intercept the grain flowing out of the connecting pipe 202 in advance. One end of the bottom of the cut-off plate 5 is located below the sealing block 203.

[0023] Furthermore, a fixing plate 6 is fixedly arranged at one end of the connecting pipe 202 away from the sleeve 201, and the fixing plate 6 is connected to the granary 1 by bolts.

[0024] Furthermore, a plurality of connecting pipes 202 are arranged at equal intervals in the longitudinal direction, so as to facilitate the control of the discharge speed.

[0025] Furthermore, the bottom of the sleeve 201 is detachably connected with a feed opening 7 via a connecting flange, and the feed opening 7 is an arc-shaped structure.

[0026] Working principle: fix the fixed plate 6 on the granary 1, one end of the connecting pipe 202 is connected to the granary, and the other end guides the grain into the sleeve 201. When it is necessary to release the grain, the pneumatic cylinder 204 drives the sealing block 203 to rise, the sealing block 203 and the intercepting plate 5 lose the seal on one end of the connecting pipe 202, and the grain is discharged through the sleeve 201 and the discharge port 7. The speed of grain discharge can be controlled by the number of seals of the connecting pipe 202. After the grain is released, the pneumatic cylinder 204 drives the sealing block 203 to descend. During the descent, the intercepting plate 5 first intercepts and preliminarily seals the connecting pipe 202. During the continuous descent of the sealing block 203, the connecting pipe 202 is sealed.

Claims

1. A pneumatic gate for grain, comprising a grain bin (1) and a discharge valve (2) detachably mounted below the side wall of the grain bin (1), characterized in that: The discharge valve (2) comprises a sleeve (201), a connecting pipe (202) connecting the granary (1) and the sleeve (201), a sealing block (203) in the inner cavity of the sleeve (201), and a pneumatic cylinder (204) for driving the sealing block (203) to move. An air hole (3) is provided at the top of the sleeve (201), a sliding groove (4) is provided on the inner wall of the sleeve (201) close to the connecting pipe (202), and a shutoff plate (5) used in conjunction with the sliding groove (4) is fixedly provided on the side wall of the sealing block (203), and one end of the bottom of the shutoff plate (5) is located below the sealing block (203).

2. A grain pneumatic gate according to claim 1, characterized in that: A fixing plate (6) is fixedly provided at one end of the connecting pipe (202) away from the sleeve (201), and the fixing plate (6) is connected to the granary (1) by bolts.

3. A grain pneumatic gate according to claim 1, characterized in that: A plurality of the connecting pipes (202) are arranged at equal intervals in the longitudinal direction.

4. A grain pneumatic gate according to claim 1, characterized in that: The bottom of the sleeve (201) is detachably connected to a feed opening (7) via a connecting flange, and the feed opening (7) is an arc-shaped structure.

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