Grain mechanical gate

Abstract

The utility model relates to the technical field of grain machinery, in particular to a grain machinery gate which comprises a machine frame and a gate plate mechanism installed at the bottom of the machine frame, the machine frame comprises a side frame and a bottom plate arranged at the bottom of the side frame, a grain inlet is formed in the top of the side frame, a grain outlet is formed in the middle of the bottom plate, and the grain inlet is communicated with the grain outlet in an opposite mode. The flashboard mechanism comprises sliding rails, a flashboard A and a flashboard B, the sliding rails are arranged on the portions, on the front side and the rear side of the grain outlet, of the bottom plate respectively, and the flashboard A and the flashboard B are horizontally arranged between the two sliding rails; according to the utility model, the stroke of the gate plates is shortened by 50% through a double-gate-plate synchronous split structure, so that the response efficiency of a grain conveying system is obviously improved; the V-shaped flow guide structure is formed by the mutually embedded slopes, residual grain particles are guided to the position between the two telescopic plates, the problem that sealing is not tight due to particle clamping stagnation is solved, and equipment overload caused by forced closing is also prevented.

Description

Technical Field

[0001] This utility model relates to the field of grain machinery technology, and in particular to a grain machinery gate. Background Technology

[0002] Grain conveying gates are key components in grain conveying systems for controlling grain flow. They are typically made of welded metal plates and installed at the inlet or outlet of silos or flat warehouses to precisely regulate or cut off grain flow. Currently, most gates employ a single-sided push-pull structure, where a cylinder drives a single gate plate to move laterally to the center of the frame to achieve flow control. However, this structure has the following shortcomings:

[0003] 1) A single gate needs to span the entire length of the inlet / outlet, resulting in a long travel distance and slow speed. This is especially problematic in large grain silos, where the opening and closing delays are significant, affecting the response efficiency of the conveying system.

[0004] 2) When the gate is closed, grain particles can easily get stuck in the gap between its end and the inner wall of the frame, causing the gate to not close completely and the seal to be inadequate, resulting in grain spillage or dust overflow. Forcing the gate to close will increase the instantaneous load on the drive components due to material jamming, which can easily lead to overload damage to the cylinder or motor in the long term, and will also aggravate the friction damage between the gate and the frame. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a grain machinery gate that is quick to open and close, has reliable sealing, and can effectively prevent material jamming and damage, in order to address the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grain machinery gate, characterized by:

[0008] Includes a frame and a gate mechanism mounted at the bottom of the frame, wherein,

[0009] The frame includes a side frame and a base plate located at the bottom of the side frame. A grain inlet is provided at the top of the side frame, and a grain outlet is provided in the middle of the base plate. The grain inlet and the grain outlet are directly connected to each other.

[0010] The gate mechanism includes a slide rail, a gate A, and a gate B. The slide rails are respectively installed on the base plates on the front and rear sides of the grain outlet. The gate A and gate B are horizontally installed between the two slide rails. Each slide rail is provided with a sliding sleeve A and a sliding sleeve B. The front and rear ends of the gate A are fixedly connected to the two sliding sleeves A, and the front and rear ends of the gate B are fixedly connected to the two sliding sleeves B. The gate A and gate B can close and cover the grain outlet.

[0011] A transmission assembly is provided on the base plate for driving gate A and gate B to move synchronously towards or away from each other along the extension direction of the slide rail.

[0012] The technical problem to be solved by this utility model can be further achieved through the following steps: the transmission assembly is set on the side of one of the slide rails away from the grain outlet, including a gear, rack A, rack B and a back plate. The gear is set between rack A and rack B. Rack A and rack B are parallel to the slide rail and both mesh with the gear. Rack A is fixedly connected to the sliding sleeve A on the same side. Rack B is fixedly connected to the sliding sleeve B on the same side through the back plate. A power device is installed on the base plate to drive the gear to rotate, thereby driving rack A and rack B to move synchronously in opposite directions or in opposite directions along the extension direction of the slide rail.

[0013] The technical problem to be solved by this utility model can be further achieved through the following steps: the power device is a drive motor installed on the upper surface of the base plate, the power output end of the drive motor extends to the bottom of the base plate and is connected to the gear for transmission.

[0014] The technical problem to be solved by this utility model can be further achieved through the following steps: the lower surface of the base plate is also provided with limit switches A and B connected to the power equipment. When the gate A and gate B move to their extreme positions in opposite directions, the end of the rack A abuts against the trigger head of the limit switch A, and the end of the rack B abuts against the trigger head of the limit switch B.

[0015] The technical problem to be solved by this utility model can be further achieved through the following steps: an arc-shaped guide plate is inclined downward on the inner wall of the side frame between the grain inlet and the grain outlet. The inner end of the guide plate is fixedly connected to the upper surface of the bottom plate, and the lower surface of the bottom plate is in contact with both the gate A and the gate B.

[0016] The technical problem to be solved by this utility model can be further achieved through the following steps: both the gate A and the gate B are provided with clearance grooves on their opposing end faces, and telescopic plates are slidably arranged in the clearance grooves. A support spring is provided between the bottom of the clearance groove and the telescopic plate. When the gate A and the gate B are closed, the opposing end faces of the two telescopic plates are in contact, and the support spring is at its maximum extension stroke.

[0017] The technical problem to be solved by this utility model can be further achieved through the following steps: the end face of the gate plate A facing the gate plate B is provided with an inwardly concave inclined surface recessed into its clearance groove, and the end face of the gate plate B facing the gate plate A is provided with an outwardly convex inclined surface protruding into its clearance groove; when the gate plate A and the gate plate B are closed, the outwardly convex inclined surface and the inwardly concave inclined surface interlock to form a V-shaped flow guiding structure, so that the residual grain particles are guided between the two telescopic plates.

[0018] The technical problem to be solved by this utility model can be further achieved through the following steps: the telescopic plate includes a plate body, one side of the plate body abuts against a support spring, and the other side of the plate body is provided with an elastic sealing strip, which is made of rubber or silicone.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the adoption of a double gate synchronous opening structure shortens the gate stroke by 50% and increases the opening and closing speed by more than 100%, significantly improving the response efficiency of the grain conveying system; the V-shaped guide structure formed by the interlocking inclined surfaces automatically guides residual grain particles between the two telescopic plates, and the adaptive retraction of the telescopic plates accommodates the particles in the clearance groove, which not only avoids the problem of poor sealing caused by particle jamming, but also prevents equipment overload caused by forced closure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a bottom view of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembly of this utility model;

[0023] Figure 4 This is a schematic diagram showing the opening of this utility model;

[0024] Figure 5 for Figure 3 Sectional view along direction B in the middle;

[0025] Figure 6 This is a schematic diagram of the cross-sections of gate A and gate B;

[0026] In the diagram: 1. Side frame; 2. Base plate; 3. Grain inlet; 4. Grain outlet; 5. Slide rail; 6. Gate A; 7. Gate B; 8. Sliding sleeve A; 9. Sliding sleeve B; 10. Gear; 11. Rack A; 12. Rack B; 13. Back plate; 14. Drive motor; 15. Limit switch A; 16. Limit switch B; 17. Guide plate; 18. Telescopic plate; 19. Support spring; 20. Concave inclined surface; 21. Convex inclined surface; 22. Elastic sealing strip; 23. Mounting plate. Detailed Implementation

[0027] The specific technical solutions of this utility model are further described below to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0029] Please refer to Figure 1-6 A grain machinery gate includes a frame and a gate mechanism installed at the bottom of the frame. The frame includes a side frame 1 and a base plate 2 welded to the bottom of the side frame 1. A mounting plate 23 extends from the outer side of the side frame 1, and a protective plate 24 extends downward from the edge of the base plate. A grain inlet 3 is provided at the top of the side frame 1, and a grain outlet 4 is provided in the middle of the base plate 2. The grain inlet 3 and the grain outlet 4 are directly opposite and connected. In use, the gate is fixed to the inlet and outlet of the grain equipment by the mounting plate 23, and the grain flow is adjusted or cut off by the gate mechanism.

[0030] The gate mechanism includes slide rails 5, gate A6, and gate B7. There are two slide rails 5, which are fixed to the lower surface of the base plate 2 on the front and rear sides of the grain outlet 4 by bolts. Gate A6 and gate B7 are horizontally arranged between the two slide rails 5. Each slide rail 5 is provided with a sliding sleeve A8 and a sliding sleeve B9. The front and rear ends of gate A6 are fixedly connected to the two sliding sleeves A8, and the front and rear ends of gate B7 are fixedly connected to the two sliding sleeves B9. Gate A6 and gate B7 can close and cover the grain outlet 4 to cut off the grain flow.

[0031] A transmission assembly is provided on the base plate 2 for driving the gate A6 and the gate B7 to move synchronously towards or away from each other along the extension direction of the slide rail 5.

[0032] Specifically, the transmission assembly is located on the side of one of the slide rails 5 away from the grain outlet 4, and includes a gear 10, a rack A11, a rack B12, and a back plate 13. The gear 10 is rotatably mounted on the base plate 2 between the racks A11 and B12. The racks A11 and B12 are parallel to the slide rail 5 and both mesh with the gear 10. The rack A11 is fixedly connected to the sliding sleeve A8 on the same side, and the rack B12 is fixedly connected to the sliding sleeve B9 on the same side through the back plate 13. A power device is installed on the base plate 2 to drive the gear 10 to rotate, thereby driving the racks A11 and B12 to move synchronously in opposite directions or in opposite directions along the extension direction of the slide rail 5.

[0033] Specifically, the power device is a drive motor 14 installed on the upper surface of the base plate 2. The power output end of the drive motor 14 extends to the bottom of the base plate 2 and is connected to the gear 10 for transmission.

[0034] Specifically, limit switches A15 and B16, connected to the power equipment, are also installed on the lower surface of the base plate 2. When the gates A6 and B7 move to their extreme positions in opposite directions, the end of rack A11 abuts against the trigger head of limit switch A15, and the end of rack B12 abuts against the trigger head of limit switch B16. At this time, limit switches A15 and B16 send control signals to the power equipment to stop its movement and prevent structural damage to the mechanical valve. Limit switches A15 and B16 adopt a redundant design, forming a double electrical interlocking mechanism: when either limit switch is triggered, a stop signal is sent to the power equipment, forming a double insurance against mechanical overload.

[0035] Specifically, an arc-shaped guide plate 17 is inclined downward on the inner wall of the side frame 1 between the grain inlet 3 and the grain outlet 4. The guide plate 17 is used to guide the grain particles to the middle of the grain outlet 4. The inner end of the guide plate 17 is fixedly connected to the upper surface of the bottom plate 2. The lower surface of the bottom plate 2 is in contact with both the gate A6 and the gate B7. This not only ensures the sealing performance, but also automatically scrapes off residual particles when the gate moves, thus achieving a self-cleaning function.

[0036] Specifically, both gate A6 and gate B7 have clearance grooves on their opposing end faces. A telescopic plate 18 is slidably disposed within each clearance groove. A support spring 19 is positioned between the bottom of the clearance groove and the telescopic plate 18. When gate A6 and gate B7 are closed, the opposing end faces of the two telescopic plates 18 are in contact, and the support spring 19 is at its maximum extension stroke. At this time, even if grain particles are trapped between gate A6 and gate B7, the telescopic plate 18 can adaptively retract under the action of the support spring 19, accommodating the particles within the clearance groove and preventing material jamming.

[0037] Specifically, the end face of the gate A6 facing the gate B7 is provided with an inwardly concave inclined surface 20 that is recessed into its clearance groove, and the end face of the gate B7 facing the gate A6 is provided with an outwardly convex inclined surface 21 that protrudes into its clearance groove; when the gate A6 and the gate B7 are closed, the outwardly convex inclined surface 21 and the inwardly concave inclined surface 20 interlock to form a V-shaped flow guiding structure, so that the residual grain particles are guided between the two telescopic plates 18.

[0038] Specifically, the telescopic plate 18 includes a plate body, one side of which abuts against the support spring 19, and the other side of the plate body is bonded with an elastic sealing strip 22, which is made of rubber or silicone.

[0039] [Working Principle] In use, this utility model is fixed to the grain bin outlet or conveying pipeline interface via the mounting plate 23. After the grain enters from the grain inlet 3, it is guided by the arc-shaped surface of the guide plate 17 to the central area of ​​the grain outlet 4, forming a stable material flow channel. When it is necessary to cut off the grain flow, the drive motor 14 is started, and its power output end drives the gear 10 to rotate, driving the rack A11 and rack B12 to move synchronously in opposite directions along the slide rail 5, which in turn drives the gate plate A6 and gate plate B7 to close through the sliding sleeves A8 and B9.

[0040] During the closing process, the convex inclined surface 21 and the concave inclined surface 20 first come into contact, forming a V-shaped guide structure that directs the remaining grain particles between the two telescopic plates 18. The telescopic plates 18 adaptively retract under the elastic action of the support spring 19 to avoid hard compression; when the gate is fully closed, racks A11 and B12 trigger limit switches A15 and B16 respectively, and the power equipment automatically stops.

[0041] When the gate needs to be opened, the drive motor 14 rotates in the opposite direction, and the gear 10 drives the racks A11 and B12 to move synchronously in opposite directions. The gate A6 separates from the gate B7, and the telescopic plate 18 automatically resets under the action of the support spring 19, pushing the residual grain particles out of the clearance groove to achieve residue-free opening.

[0042] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A grain machinery gate, characterized in that: Includes a frame and a gate mechanism mounted at the bottom of the frame, wherein, The frame includes a side frame and a base plate located at the bottom of the side frame. A grain inlet is provided at the top of the side frame, and a grain outlet is provided in the middle of the base plate. The grain inlet and the grain outlet are directly connected to each other. The gate mechanism includes a slide rail, a gate A, and a gate B. The slide rails are respectively installed on the base plates on the front and rear sides of the grain outlet. The gate A and gate B are horizontally installed between the two slide rails. Each slide rail is provided with a sliding sleeve A and a sliding sleeve B. The front and rear ends of the gate A are fixedly connected to the two sliding sleeves A, and the front and rear ends of the gate B are fixedly connected to the two sliding sleeves B. The gate A and gate B can close and cover the grain outlet. A transmission assembly is provided on the base plate for driving gate A and gate B to move synchronously towards or away from each other along the extension direction of the slide rail.

2. The grain machinery gate according to claim 1, characterized in that: The transmission assembly is located on the side of one of the slide rails away from the grain outlet, and includes a gear, rack A, rack B, and a back plate. The gear is located between rack A and rack B. Rack A and rack B are parallel to the slide rail and both mesh with the gear. Rack A is fixedly connected to a sliding sleeve A on the same side, and rack B is fixedly connected to a sliding sleeve B on the same side through the back plate. A power device is installed on the base plate to drive the rotation of the drive gear, thereby driving rack A and rack B to move synchronously in opposite directions or in opposite directions along the extension direction of the slide rail.

3. The grain machinery gate according to claim 2, characterized in that: The power device is a drive motor mounted on the upper surface of the base plate, with the power output end of the drive motor extending below the base plate and connected to the gear for transmission.

4. The grain machinery gate according to claim 2, characterized in that: The lower surface of the base plate is also provided with limit switches A and B connected to the power equipment. When the gate A and gate B move to their extreme positions in opposite directions, the end of the rack A abuts against the trigger head of the limit switch A, and the end of the rack B abuts against the trigger head of the limit switch B.

5. The grain machinery gate according to claim 1, characterized in that: An arc-shaped guide plate is inclined downward on the inner wall of the side frame between the grain inlet and the grain outlet. The inner end of the guide plate is fixedly connected to the upper surface of the bottom plate, and the lower surface of the bottom plate is in contact with both the gate A and the gate B.

6. The grain machinery gate according to claim 1, characterized in that: Both gate A and gate B have clearance grooves on their opposing end faces. A telescopic plate is slidably arranged in the clearance groove. A support spring is provided between the bottom of the clearance groove and the telescopic plate. When gate A and gate B are closed, the opposing end faces of the two telescopic plates are in contact, and the support spring is at its maximum extension stroke.

7. The grain machinery gate according to claim 6, characterized in that: The end face of gate A facing gate B is provided with an inwardly concave inclined surface that is recessed into its clearance groove, and the end face of gate B facing gate A is provided with an outwardly convex inclined surface that protrudes into its clearance groove; when gate A and gate B are closed, the outwardly convex inclined surface and the inwardly concave inclined surface interlock to form a V-shaped flow guiding structure, so that residual grain particles are guided between the two telescopic plates.

8. The grain machinery gate according to claim 7, characterized in that: The telescopic plate includes a plate body, one side of which abuts against a supporting spring, and the other side of the plate body is provided with an elastic sealing strip, which is made of rubber or silicone.

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