Quick gate opening device for squat silo of grain depot
By employing a lifting system with cylinders and pneumatic valves in the shallow circular silos of the grain depot, the safety hazards of manual gates and the uncontrollable size of the grain outlet have been solved, achieving safe and flexible grain discharge control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CENT GRAIN RESERVE HUIZHOU DIRECT WAREHOUSE CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the manual gate at the bottom of the shallow circular silo poses a safety hazard when opened, and the size of the grain outlet cannot be controlled at will, which makes it impossible to guarantee the safety of the workers when the grain flows out.
A quick-opening gate device for shallow circular grain silos was designed. It adopts a lifting system consisting of a cylinder, an air compressor, and a pneumatic control valve. The pneumatic control valve controls the cylinder to lift and lower the grain gate, allowing for arbitrary control of the size of the grain outlet and enabling operators to operate the gate from a safe distance.
It enables safe control of the grain outlet size, avoids damage to the gate from grain impact, ensures the safety of operators, and allows control of the gate's opening and closing speed and size within a certain distance.
Smart Images
Figure CN224171668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain depot unloading technology, specifically to a quick-opening gate device for shallow circular grain depots. Background Technology
[0002] A grain depot is a specialized building for storing grain. It mainly includes warehouses, storage yards (or drying yards), and facilities for metering, conveying, stacking, cleaning, loading and unloading, ventilation, and drying. It is also equipped with instruments for measuring, sampling, inspection, and testing. Storing grain in a grain depot can effectively prevent external factors from affecting the grain stored there, ensuring the freshness and quality of the grain.
[0003] Grain depots typically use shallow circular silos for grain storage, and gates are installed at the bottom of these silos for discharging grain. However, current technology often uses manually operated gates at the bottom of shallow circular silos. When opening the gate to discharge grain or closing it to block grain discharge, on-site personnel must manually operate the gate. When the gate is opened, the pressure of the grain inside the silo can cause the gate's grain-blocking gate to burst open, resulting in a large outflow of grain that could flood the personnel, compromising their safety and posing a safety hazard. Furthermore, the size of the grain outlet in the shallow circular silo cannot be controlled at will. Summary of the Invention
[0004] This invention addresses the problems of inconvenience in controlling the size of the grain outlet of a shallow circular silo using manual gates and the lack of safety for operators when the gate is open. It provides a quick-opening gate device for a shallow circular silo in grain depots, which can freely control the size of the grain outlet of the shallow circular silo, and allows operators to control the opening and closing of the gate from a certain distance outside the shallow circular silo, effectively protecting the safety of the operators.
[0005] To achieve the above objectives, the technical solution of this utility model is: a quick-opening gate device for a shallow circular grain depot, comprising a shallow circular grain depot, a grain outlet at the bottom of the shallow circular grain depot, a fixed frame, a grain gate, and a lifting system. The fixed frame is fixedly installed at the grain outlet, and L-shaped strips are symmetrically arranged on the outside of the fixed frame. The gap between the L-shaped strips and the fixed frame forms an inner sliding groove, which facilitates the lifting and lowering movement of the grain gate to open and close the grain outlet.
[0006] The grain-blocking gate includes a grain-blocking plate and a convex plate disposed on the outer side of the grain-blocking plate. The grain-blocking plate is slidably disposed on the side within an inner sliding groove, and a lower insert box is vertically disposed on the outer side of the convex plate. The grain-blocking plate serves to open and close the grain outlet, the convex plate increases the strength of the grain-blocking plate, and the inner sliding groove limits the movement of the grain-blocking plate and facilitates the lifting and lowering movement of the grain-blocking gate to open and close the grain outlet.
[0007] The lifting system includes a cylinder, an air compressor, and a pneumatic control valve. The air port of the cylinder is connected to the air compressor via an air pipe, and the pneumatic control valve is installed on the air pipe to control the cylinder's movement. The cylinder drives the grain gate to move up and down, opening and closing the grain outlet. The air compressor provides the air source to drive the cylinder. The pneumatic control valve allows operators to control the gate's opening and closing from a certain distance outside the shallow circular silo, effectively protecting operator safety. Furthermore, the pneumatic control valve controls the height at which the cylinder drives the grain gate, allowing for arbitrary control of the grain outlet size.
[0008] A fixing plate is provided above the fixing frame and fixed to the shallow circular silo. An upper insert box is provided on the outside of the fixing plate, corresponding to the lower insert box. The lower insert box and the upper insert box are detachably connected to the cylinder. The lower insert box and the upper insert box facilitate the installation and removal of the cylinder. The cylinder is installed when the grain outlet needs to be opened to release grain, and removed when the grain outlet is closed and grain release is not required.
[0009] Preferably, the gap between the side of the convex plate and the grain-blocking plate forms an outer sliding groove, and the horizontal part of the L-shaped strip extends into the outer sliding groove and slides in connection with the grain-blocking plate and the convex plate, which not only limits the grain-blocking plate but also facilitates the grain-blocking plate to move up and down.
[0010] Preferably, the lower insert box has a symmetrically arranged lower reinforcing plate at the top, which is fixedly connected to the convex plate; the upper insert box has a symmetrically arranged upper reinforcing plate at the top, which is fixedly connected to the fixing plate; the upper insert box has a slot at the bottom; the lower reinforcing plate plays a role in stabilizing and reinforcing the connection between the lower insert box and the convex plate; and the upper reinforcing plate plays a role in stabilizing and reinforcing the connection between the upper insert box and the fixing plate.
[0011] Preferably, the cylinder telescopic end is detachably provided with an L-shaped insert plate, the horizontal part of which is inserted into the lower insert box; a vertical plate is fixedly provided at the top of the cylinder tail end, and a T-shaped insert plate is provided on the vertical plate, the horizontal part of which is inserted into the upper insert box. The T-shaped insert plate is inserted into the upper insert box to suspend the cylinder above the grain blocking gate, and the L-shaped insert plate is inserted into the lower insert box so that the telescopic end of the cylinder can extend and retract to drive the grain blocking gate to move up and down.
[0012] Preferably, pulley seats are symmetrically arranged on the outer side of the fixed plate, and pulleys are rotatably arranged on the pulley seats; multiple upper lifting lugs fixed to the fixed plate are evenly spaced below the pulleys.
[0013] Preferably, the top of the convex plate is symmetrically provided with lower lifting lugs; a rope is hung on the pulley, and hooks matching the lower and upper lifting lugs are respectively provided at both ends of the rope. The hooks at both ends of the rope cooperate with the lower and upper lifting lugs, so that the grain gate can be opened by suspending the rope, which can serve as an emergency backup when the cylinder is damaged and grain needs to be discharged.
[0014] The beneficial effects of this utility model through the above technical solution are as follows:
[0015] This utility model has a reasonable structure and good performance. It can control the size of the grain outlet of the shallow circular silo at will, replacing the manual operation of the gate by the operator. The operator can stand at a certain distance from the grain outlet to control the opening and closing of the gate, which can effectively ensure the safety of the operator and has high safety performance. At the same time, it can also control the speed of the gate opening or closing to avoid damage to the grain gate due to grain impact.
[0016] The air compressor of this lifting system provides air to drive the cylinder. The extension and retraction of the cylinder's telescopic end can drive the grain gate to move up and down, thus opening or closing the grain outlet. A pneumatic control valve controls the height of the grain gate driven by the cylinder, allowing for arbitrary control of the grain outlet size. Simultaneously, operators can stand at a certain distance from the grain outlet to control the cylinder, controlling the opening and closing of the grain gate, thereby ensuring operator safety. In addition to controlling the opening and closing of the grain gate, the pneumatic control valve also controls the speed at which the grain gate opens or closes.
[0017] The T-shaped insert plate of this utility model is horizontally inserted into the upper insert box. The T-shaped insert plate is inserted into the upper insert box to suspend the cylinder above the grain gate. The L-shaped insert plate is inserted into the lower insert box so that the telescopic end of the cylinder can extend and retract, thereby driving the grain gate to move up and down. The lower insert box and the upper insert box facilitate the installation and removal of the cylinder. The cylinder is installed when grain needs to be discharged and removed after the grain is discharged. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a quick-opening gate device for a shallow circular grain silo according to this utility model. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of a quick-opening gate device for a shallow circular grain silo according to this utility model. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the structure of a quick-opening gate device for a shallow circular grain silo according to this utility model. Figure 3 ;
[0021] Figure 4 This is a schematic diagram of the structure of the shallow circular chamber of this utility model;
[0022] Figure 5 This is a structural schematic diagram of the grain-blocking gate of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the cylinder of this utility model;
[0024] Figure 7This is a structural schematic diagram of the lifting system of this utility model;
[0025] Figure 8 yes Figure 2 Enlarged structural diagram at point A;
[0026] Figure 9 yes Figure 4 A magnified structural diagram at point B in the middle.
[0027] The attached diagram is labeled as follows: 1 is a shallow circular silo, 2 is the grain outlet, 3 is the fixing frame, 4 is an L-shaped strip, 5 is an inner chute, 6 is a grain retaining plate, 7 is a convex plate, 8 is an outer chute, 9 is a lower insert box, 10 is a lower reinforcing plate, 11 is a lower lifting lug, 12 is a fixing plate, 13 is an upper insert box, 14 is an upper reinforcing plate, 15 is a slot, 16 is a cylinder, 17 is a vertical plate, 18 is a T-shaped insert plate, 19 is an L-shaped insert plate, 20 is an air compressor, 21 is a pneumatic control valve, 22 is a pulley seat, 23 is a pulley, 24 is a rope, 25 is a hook, and 26 is an upper lifting lug. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0029] like Figures 1-9 As shown, a quick-opening gate device for a shallow circular grain silo includes a shallow circular silo 1 with a grain outlet 2 at its lower part. It also includes a fixed frame 3, a grain gate, and a lifting system. The fixed frame 3 is fixedly installed at the grain outlet 2. L-shaped strips 4 are symmetrically arranged on the outer side of the fixed frame 3, and the gap between the L-shaped strips 4 and the fixed frame 3 forms an inner groove 5. The grain outlet 2 has a square structure. The fixed frame 3 is welded and fixed to the shallow circular silo 1, and the part of it in contact with the shallow circular silo 1 has an arc-shaped structure. The inner groove 5 has an open upper end and a closed lower end.
[0030] The grain-blocking gate includes a grain-blocking plate 6 and a convex plate 7 disposed on the outer side of the grain-blocking plate 6. The grain-blocking plate 6 is slidably disposed in an inner sliding groove 5, and a lower insert box 9 is vertically disposed on the outer side of the convex plate 7. The inner sliding groove 5 facilitates the lifting and lowering movement of the grain-blocking plate 6 and guides the lifting and lowering movement of the grain-blocking plate 6. The L-shaped strip 4 limits the movement of the grain-blocking plate 6, and at the same time, the bottom of the L-shaped strip 4 blocks the grain-blocking plate 6, preventing the grain-blocking plate 6 from sliding downward when the grain-blocking gate is not connected to the cylinder 16, causing the grain inside the shallow circular silo 1 to flow out from the grain outlet 2. The convex plate 7 installed on the outer side of the grain-blocking plate 6 can improve the strength of the grain-blocking plate 6 and avoid damage to the grain-blocking plate 6 due to the impact of grain.
[0031] The lifting system includes a cylinder 16, an air compressor 20, and a pneumatic control valve 21. The air port of the cylinder 16 is connected to the air compressor 20 through an air pipe. The pneumatic control valve 21 is installed on the air pipe and is used to control the operation of the cylinder 16. The two air ports of cylinder 16 are connected to pneumatic control valve 21 via two air pipes, and pneumatic control valve 21 is connected to air compressor 20 via air pipes. Air compressor 20 provides air to cylinder 16 for driving. The extension and retraction of cylinder 16 drives the grain gate to move up and down. Pneumatic control valve 21 is a 4HA230C-08 pneumatic switch manual valve. Pneumatic control valve 21 controls cylinder 16 and controls the height of the grain gate driven by cylinder 16, so as to achieve the effect of arbitrarily controlling the size of grain outlet 2. The operator can hold pneumatic control valve 21 and stand at a certain distance from grain outlet 2 to control cylinder 16, thereby controlling the opening and closing of grain gate, ensuring the safety of the operator and high safety performance. The operator can also control the speed at which cylinder 16 drives the grain gate to move up and down through pneumatic control valve 21.
[0032] A fixing plate 12 is provided above the fixing frame 3 and fixed to the shallow circular bin 1. An upper insert box 13 is provided on the outside of the fixing plate 12, corresponding to the lower insert box 9. The lower insert box 9 and the upper insert box 13 are detachably connected to the cylinder 16. The fixing plate 12 is bolted to the shallow circular bin 1. The connection between the lower insert box 9 and the upper insert box 13 and the cylinder 16 allows the telescopic end of the cylinder 16 to drive the grain gate to move up and down, while also facilitating the disassembly and assembly of the cylinder 16.
[0033] The gap between the side of the convex plate 7 and the grain-blocking plate 6 forms an outer sliding groove 8. The horizontal part of the L-shaped strip 4 extends into the outer sliding groove 8 and is slidably connected with the grain-blocking plate 6 and the convex plate 7. The horizontal part of the L-shaped strip 4 cooperates with the outer sliding groove 8 to facilitate the grain-blocking plate 6 to move up and down to open and close the grain outlet 2.
[0034] The lower insert box 9 is symmetrically provided with lower reinforcing plates 10 fixedly connected to the convex plate 7 at its top; the upper insert box 13 is symmetrically provided with upper reinforcing plates 14 fixedly connected to the fixing plate 12 at its top, and the upper insert box 13 has a slot 15 at its bottom. There are two lower reinforcing plates 10, which are welded and fixed to the lower insert box 9 and the convex plate 7, and the lower reinforcing plates 10 play a role in stabilizing and reinforcing the connection between the lower insert box 9 and the convex plate 7; there are also two upper reinforcing plates 10, which are welded and fixed to the upper insert box 13 and the fixing plate 12, and play a role in stabilizing and reinforcing the connection between the upper insert box 13 and the fixing plate 12; the slot 15 provides an installation position for the vertical part of the T-shaped insert plate 18, so that the horizontal part of the T-shaped insert plate 18 can be inserted into the upper insert box 13.
[0035] The cylinder 16 is detachably provided with an L-shaped insert plate 19 at its telescopic end, and the horizontal part of the L-shaped insert plate 19 is inserted into the lower insert box 9; a vertical plate 17 is fixedly provided at the top of the tail end of the cylinder 16, and a T-shaped insert plate 18 is provided on the vertical plate 17, and the horizontal part of the T-shaped insert plate 18 is inserted into the upper insert box 13. L-shaped insert plate 19 is fitted onto the telescopic end of cylinder 16. The telescopic end of cylinder 16 is threadedly connected to a limiting nut located below L-shaped insert plate 19. The limiting nut prevents L-shaped insert plate 19 from disengaging from the telescopic end of cylinder 16, ensuring that the telescopic end of cylinder 16 drives the grain gate to move up and down through the cooperation of L-shaped insert plate 19 and lower insert box 9. Vertical plate 17 is bolted to T-shaped insert plate 18. Through the cooperation of T-shaped insert plate 18 and upper insert box 13, cylinder 16 is suspended above the grain gate, so that the telescopic end of cylinder 16 can drive the grain gate to move up and down to open and close the grain outlet 2. The lower insert box 9 and upper insert box 13 facilitate the disassembly and assembly of cylinder 16.
[0036] The fixed plate 12 is symmetrically provided with pulley seats 22 on its outer side, and pulleys 23 are rotatably mounted on the pulley seats 22. Multiple upper lifting lugs 26, fixed to the fixed plate 12, are evenly spaced below each pulley 23. The pulley seats 22 are bolted to the fixed plate 12. Each pulley 23 includes a pulley shaft, with both ends of the pulley shaft fixed to the pulley seat 22. The pulley 23 is rotatably connected to the pulley shaft via bearings. Each pulley 23 has five upper lifting lugs 26, which are threaded onto the fixed plate 12.
[0037] The top of the convex plate 7 is symmetrically provided with lower lifting lugs 11; a rope 24 is hung on the pulley 23, and the two ends of the rope 24 are respectively provided with hooks 25 that match the lower lifting lugs 11 and the upper lifting lugs 26. There are two lower lifting lugs 11 on the top of the convex plate 7, and they are threadedly connected to the convex plate 7; when the cylinder 16 is damaged and cannot be used normally, but grain needs to be discharged, the operator can hang the hooks 25 at the upper end of the rope 24 on the corresponding upper lifting lugs 26 according to the size of the grain outlet 2 to be opened, and then the operator can lift the grain gate upward through the lower insert box 9 and hang the hooks 26 at the lower end of the rope 24 on the lower lifting lugs 11. The rope 24 suspends the grain gate through the pulley 23; the use of the rope 24 to suspend the grain gate to open and close the grain outlet 2 is only used in emergency situations. When the cylinder 16 is used normally, the rope 24 is removed from the pulley 23.
[0038] The working principle of this utility model is as follows: When grain needs to be discharged from the shallow circular silo 1 of the grain depot, the operator first inserts the T-shaped insert plate 18 into the upper insert box 13, and then inserts the L-shaped insert plate 19 into the lower insert box 9. The T-shaped insert plate 18 and the vertical plate 17 are then tightened using the nuts on the bolts, completing the assembly of the cylinder 16. Then, the operator can hold the pneumatic control valve 21 and stand at a certain distance from the grain outlet 2 to control the cylinder 16. The pneumatic control valve 21 controls the retraction of the telescopic end of the cylinder 16, which in turn drives the convex plate 7 to move upwards. The convex plate 7 then drives the grain-blocking plate 6 upwards. The movement opens the grain outlet 2. Depending on the required size of the grain outlet 2, the retraction distance of the cylinder 16 is controlled by the pneumatic control valve 21. After the grain is discharged, the retraction end of the cylinder 16 is extended again by the pneumatic control valve 21. The retraction end of the cylinder 16 drives the convex plate 7 to move downward, and the convex plate 7 drives the grain blocking plate 6 to move downward until the grain blocking plate 6 closes the grain outlet 2. Then, the cylinder 16 is disassembled, the horizontal part of the T-shaped insert plate 18 is pulled out from the upper insert box 13, and the horizontal part of the L-shaped insert plate 19 is pulled out from the lower insert box 9. After disassembling the cylinder 16, the grain discharge operation is completed.
[0039] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.
Claims
1. A quick-opening gate device for a shallow circular grain silo, comprising a shallow circular silo (1), wherein a grain outlet (2) is provided at the lower part of the shallow circular silo (1), characterized in that, It also includes a fixed frame (3), a grain gate and a lifting system. The fixed frame (3) is fixedly installed at the grain outlet (2). L-shaped strips (4) are symmetrically arranged on the outside of the fixed frame (3). The gap between the L-shaped strips (4) and the fixed frame (3) forms an inner groove (5). The grain blocking door includes a grain blocking plate (6) and a convex plate (7) disposed on the outside of the grain blocking plate (6). The side of the grain blocking plate (6) is slidably disposed in the inner sliding groove (5). A lower insert box (9) is vertically disposed on the outside of the convex plate (7). The lifting system includes a cylinder (16), an air compressor (20), and a pneumatic control valve (21). The air port of the cylinder (16) is connected to the air compressor (20) through an air pipe. The pneumatic control valve (21) is installed on the air pipe and is used to control the action of the cylinder (16). The fixed frame (3) is provided with a fixed plate (12) fixed on the shallow round bin (1) above it. The fixed plate (12) is provided with an upper insert box (13) corresponding to the lower insert box (9) on the outside. The lower insert box (9) and the upper insert box (13) are detachably connected to the cylinder (16).
2. The quick-opening gate device for a shallow circular grain silo according to claim 1, characterized in that, The gap between the side of the convex plate (7) and the grain retaining plate (6) forms an outer sliding groove (8), and the horizontal part of the L-shaped strip (4) extends into the outer sliding groove (8) and is slidably connected with the grain retaining plate (6) and the convex plate (7).
3. The quick-opening gate device for a shallow circular grain silo according to claim 1, characterized in that, The lower insert box (9) is symmetrically provided with a lower reinforcing plate (10) fixedly connected to the convex plate (7) at the top; the upper insert box (13) is symmetrically provided with an upper reinforcing plate (14) fixedly connected to the fixing plate (12) at the top; and the upper insert box (13) is provided with a slot (15) at the bottom.
4. The quick-opening gate device for a shallow circular grain silo according to claim 3, characterized in that, The cylinder (16) has an L-shaped insert plate (19) detachably installed at its telescopic end. The horizontal part of the L-shaped insert plate (19) is inserted into the lower insert box (9). The cylinder (16) has a vertical plate (17) fixedly installed at the top of its tail end. A T-shaped insert plate (18) is installed on the vertical plate (17). The horizontal part of the T-shaped insert plate (18) is inserted into the upper insert box (13).
5. The quick-opening gate device for a shallow circular grain silo according to claim 1, characterized in that, The fixed plate (12) is symmetrically provided with pulley seats (22) on the outside, and pulleys (23) are rotatably provided on the pulley seats (22); multiple upper lifting lugs (26) fixed on the fixed plate (12) are arranged at equal intervals below the pulleys (23).
6. The quick-opening gate device for a shallow circular grain silo according to claim 5, characterized in that, The top of the convex plate (7) is symmetrically provided with a lower lifting lug (11); a rope (24) is hung on the pulley (23), and hooks (25) matching the lower lifting lug (11) and the upper lifting lug (26) are respectively provided at both ends of the rope (24).