Self-locking easy-to-clean hand pneumatic gate
By combining manual and pneumatic opening and closing mechanisms, and featuring a gate design with a built-in locking function, the problems of unadjustable discharge volume and difficult cleaning are solved, achieving controllable discharge volume and convenient cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU DONGHONG MASCH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-09
AI Technical Summary
Existing pneumatic gates cannot adjust the discharge rate, and after long-term use, materials tend to accumulate inside the gate, making it difficult to clean the corners.
It adopts a combination of manual and pneumatic opening and closing mechanisms. The opening degree can be manually adjusted and locked by a self-locking mechanism. Combined with the frustum-shaped guide hopper design, the discharge rate can be adjusted, and it is equipped with a cleaning port to facilitate the cleaning of accumulated materials.
It enables adjustable control of the discharge rate, reduces material accumulation inside the gate, and thoroughly cleans the corners inside the gate, thus improving cleaning efficiency.
Smart Images
Figure CN224336303U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a self-locking, easy-to-clean hand pneumatic gate in the field of gate technology. Background Technology
[0002] The silo is used to store materials. A discharge port is located at the bottom of the silo for removing materials. To facilitate material retrieval and storage, a gate is installed at the discharge port at the bottom of the silo. Pneumatic gates are often chosen for easy opening and closing. However, the opening degree of pneumatic gates is not adjustable; they are either completely closed or completely open, making it impossible to control the discharge rate. Furthermore, after long-term use, material gradually accumulates inside the gate, hindering material flow. The only way to clean the accumulated material is to open the gate and insert an air gun from the bottom to blow it out, but this is difficult to clean the corners and edges inside the gate. Utility Model Content
[0003] The purpose of this utility model is to provide a self-locking, easy-to-clean pneumatic gate that can adjust the discharge rate and facilitate the cleaning of accumulated materials inside the gate.
[0004] To achieve the above objectives, this utility model provides a self-locking, easy-to-clean pneumatic gate, including a housing, which is divided into a mechanism chamber and a discharge chamber. The upper part of the mechanism chamber is equipped with a manual opening and closing mechanism, which is matched with a self-locking mechanism. The lower part of the mechanism chamber is equipped with a pneumatic opening and closing mechanism. The top of the discharge chamber has an inlet, which is matched with an upper guide hopper. The bottom of the discharge chamber has an outlet, which is matched with a lower guide hopper. The rear of the discharge chamber has a cleaning port, which is matched with a sealing door plate. The sealing door plate and the cleaning port are connected by bolts.
[0005] Compared with the prior art, the beneficial effect of this utility model is that after the opening degree is adjusted by the manual opening and closing mechanism, the self-locking mechanism locks the opening degree, and the pneumatic opening and closing mechanism opens, allowing the material to enter the discharge chamber of the gate shell from the discharge port of the hopper, and finally flow out from the discharge port of the shell. When it is necessary to clean the silt, the bolts are turned off to remove the sealing door plate, so that the air gun can be inserted into the cleaning port to blow and clean the discharge chamber, and the corners can also be cleaned.
[0006] As a further improvement of this utility model, the manual opening and closing mechanism includes an internal gear and a rack disposed in the mechanism chamber. The internal gear is sleeved on the rotating shaft, and both ends of the rotating shaft extend out of the mechanism chamber and are connected to the bearings. A handwheel is also installed at one end of the rotating shaft. The gear meshes with the rack, and an upper gate plate is provided on the top of the rack. The upper gate plate is equipped with multiple upper rollers, which are disposed on the upper part of both sides of the inner wall of the outer shell. The lower opening of the upper guide hopper matches the upper gate plate.
[0007] Turning the handwheel causes the shaft to rotate, which in turn drives the internal gear to rotate. This causes the rack to move away from the cleaning port under the drive of the internal gear, thus exposing the lower opening of the upper guide hopper. Moreover, the area of the lower opening of the upper guide hopper exposed by the upper gate can be adjusted by turning the handwheel, making the operation very convenient and simple. The upper roller not only supports the upper gate but also allows the upper gate to move very smoothly.
[0008] As a further improvement of this utility model, the self-locking mechanism includes a fixed plate with a nut embedded in it. The nut is threadedly connected to a stud. The lower end of the stud is machined into a flat shape and matches the tooth gap of the external gear. The external gear is fitted onto the other end of the rotating shaft, and a handle is connected to the top of the stud.
[0009] After adjusting the handwheel to the correct position, rotate the handle to move the stud downwards along the thread of the nut, inserting the lower end of the stud into the tooth gap of the external gear. This prevents the handwheel from rotating further, thus avoiding the problem of the upper gate continuing to retreat due to the impact of the material falling from the hopper. This ensures that the opening and closing degree of the upper gate remains constant, resulting in a constant material discharge rate.
[0010] As a further improvement of this utility model, the pneumatic opening and closing mechanism includes a pneumatic push rod, the telescopic end of which is connected to the lower gate plate. The lower gate plate is equipped with multiple lower rollers, which are located at the lower part of both sides of the inner wall of the outer shell. The lower opening of the lower guide hopper matches the lower gate plate.
[0011] The pneumatic push rod retracts, moving the lower gate away from the cleaning port, eventually exposing the lower opening of the lower guide hopper. This connects the feed inlet, upper guide hopper, lower guide hopper, and discharge outlet, allowing the material to flow out through the discharge chamber. The lower rollers not only support the lower gate but also ensure its smooth movement.
[0012] As a further improvement of this utility model, the upper guide hopper and the lower guide hopper are frustum-shaped, the upper opening area of the upper guide hopper is larger than the lower opening area, the upper opening area of the lower guide hopper is larger than the lower opening area, the lower guide hopper is directly below the upper guide hopper and directly above the discharge port, and the upper opening of the upper guide hopper is in contact with the inlet.
[0013] This design ensures that the upper opening of the upper guide hopper matches the discharge outlet, guaranteeing that the material will only fall from the upper guide hopper. Furthermore, the material will not come into contact with the inner wall of the discharge chamber after falling from the upper and lower guide hoppers. In addition, the gate and the outlet of the guide hopper fit together, which improves the sealing performance of the gate and prevents small particles from seeping out from the gaps. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 .
[0015] Figure 2 This is a front view of the present utility model.
[0016] Figure 3 This is a top view of the present invention.
[0017] Figure 4 for Figure 3 The view of AA.
[0018] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 2 .
[0019] The components are as follows: 1. Upper guide hopper; 2. External gear; 3. Handwheel; 4. Lower guide hopper; 5. Cleaning port; 6. Outer shell; 7. Scale bar; 8. Pointer; 9. Discharge chamber; 10. Upper gate; 11. Rotary shaft; 12. Rack; 13. Upper roller; 14. Mechanism chamber; 15. Lower roller; 16. Internal gear; 17. Pneumatic push rod; 18. Fixing plate; 19. Stud; 20. Handle; 21. Nut; 22. Sealing door panel; 23. Lower gate. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings:
[0021] like Figure 1-5 The illustrated pneumatic gate with self-locking and easy cleaning includes a housing 6, which is divided into a mechanism chamber 14 and a discharge chamber 9. The upper part of the mechanism chamber 14 is equipped with a manual opening and closing mechanism and a self-locking mechanism. The lower part of the mechanism chamber 14 is equipped with a pneumatic opening and closing mechanism. The top of the discharge chamber 9 has an inlet port and an upper guide hopper 1. The bottom of the discharge chamber 9 has an outlet port and a lower guide hopper 4. The rear of the discharge chamber 9 has a cleaning port 5 and a sealing door plate 22. The sealing door plate 22 and the cleaning port 5 are connected by bolts.
[0022] The manual opening and closing mechanism includes an internal gear 16 and a rack 12 disposed in the mechanism chamber 14. The internal gear 16 is sleeved on the rotating shaft 11. Both ends of the rotating shaft 11 extend out of the mechanism chamber 14 and are connected to the bearings. A handwheel 3 is also installed at one end of the rotating shaft 11. The gear meshes with the rack 12. An upper gate plate 10 is provided on the top of the rack 12. The upper gate plate 10 is equipped with multiple upper rollers 13. The upper rollers 13 are disposed on the upper part of both sides of the inner wall of the outer casing 6. The lower opening of the upper guide hopper 1 matches the upper gate plate 10.
[0023] The self-locking mechanism includes a fixed plate 18, on which a nut 21 is embedded. The nut 21 is threadedly connected to a stud 19. The lower end of the stud 19 is machined into a flat shape and matches the tooth clearance of the external gear 2. The external gear 2 is fitted onto the other end of the rotating shaft 11. A handle 20 is connected to the top of the stud 19.
[0024] The pneumatic opening and closing mechanism includes a pneumatic push rod 17. The telescopic end of the pneumatic push rod 17 is connected to the lower gate plate 23. The lower gate plate 23 is equipped with multiple lower rollers 15. The lower rollers 15 are located on the lower part of both sides of the inner wall of the outer shell 6. The lower opening of the lower guide hopper 4 matches the lower gate plate 23.
[0025] The upper guide hopper 1 and the lower guide hopper 4 are frustum-shaped. The upper opening area of the upper guide hopper 1 is larger than the lower opening area, and the upper opening area of the lower guide hopper 4 is larger than the lower opening area. The lower guide hopper 4 is located directly below the upper guide hopper 1 and directly above the discharge port. The upper opening of the upper guide hopper 1 is in contact with the inlet.
[0026] In this utility model, a hand-operated pneumatic gate is installed at the discharge port at the bottom of the hopper. When materials need to be removed from the hopper, the handwheel 3 is turned, causing the rotating shaft 11 to rotate and drive the internal gear 16 to rotate. This causes the rack 12 to move along the direction away from the cleaning port 5 under the drive of the internal gear 16, thereby exposing the lower opening of the upper guide hopper 1. According to the scale bar 7 and pointer 8 installed near the handwheel 3, the opening degree of the upper gate 10, that is, the size of the area of the lower opening of the upper guide hopper 1 exposed by the upper gate 10, can be clearly known.
[0027] Once the desired opening degree is reached, rotate the handle 20 so that the stud 19 moves downward along the thread of the nut 21, inserting the lower end of the stud 19 into the tooth gap of the external gear 2, preventing the handwheel 3 from continuing to rotate, thereby locking the opening degree of the upper gate 10.
[0028] Then the pneumatic push rod 17 retracts, moving the lower gate 23 away from the cleaning port 5, and finally exposing the lower opening of the lower guide hopper 4. This connects the feed port, the upper guide hopper 1, the lower guide hopper 4 and the discharge port, allowing the material to flow out along the discharge chamber 9.
[0029] The upper guide hopper 1 is frustum-shaped, and its upper opening is fixed to the inner wall of the discharge chamber 9 so that its upper opening can match the inlet of the discharge chamber 9. The upper opening of the lower guide hopper 4 is fixed to the inner wall of the discharge chamber 9. Since the lower opening of the upper guide hopper 1 has a smaller area than its upper opening, the material will not come into contact with the upper inner wall of the discharge chamber 9 when it falls from the lower opening of the lower guide hopper 4 onto the lower guide hopper 4. Similarly, the lower opening of the lower guide hopper 4 has a smaller area than its upper opening, so the material will not come into contact with the lower inner wall of the discharge chamber 9 when it falls from the lower opening of the lower guide hopper 4. In this way, the material will not accumulate on the inner wall of the discharge chamber 9 during the falling process.
[0030] After material collection is complete, reverse the rotation of stud 19 to move it upwards and disengage it from the backlash of external gear 2. Then, reverse the rotation of handwheel 3 to move the upper gate 10 towards the cleaning port 5, ultimately completely closing the lower opening of the upper guide hopper 1. Next, extend the telescopic end of the electric push rod to move the lower gate 23 towards the cleaning port 5, ultimately completely closing the lower opening of the lower guide hopper 4. In this way, the entire manual / pneumatic valve is completely closed, preventing any further material from exiting the hopper.
[0031] When emptying the hopper, choose to clean the gate. Unscrew the bolts and remove the sealing gate plate 22 from the cleaning port 5. The upper gate plate 10 and the lower gate plate 23 are also fully open. At this time, insert the air gun into the discharge chamber 9 through the cleaning port 5 to easily blow clean all parts of the discharge chamber 9, including all the edges and corners.
[0032] This invention uses a combination of manual and pneumatic methods to achieve adjustable discharge volume, making it difficult for materials to accumulate on the inner wall of the gate, and also making it easier to clean the corners and edges inside the gate through the cleaning port 5.
[0033] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.
Claims
1. A self-locking, easy-to-clean pneumatic gate, characterized in that: The device includes an outer shell, which is divided into a mechanism chamber and a discharge chamber. The upper part of the mechanism chamber is equipped with a manual opening and closing mechanism and a self-locking mechanism. The lower part of the mechanism chamber is equipped with a pneumatic opening and closing mechanism. The top of the discharge chamber has a feed inlet and an upper guide hopper. The bottom of the discharge chamber has a discharge outlet and a lower guide hopper. The rear of the discharge chamber has a cleaning port and a sealing door plate. The sealing door plate is connected to the cleaning port by bolts.
2. The self-locking, easy-to-clean pneumatic gate according to claim 1, characterized in that: The manual opening and closing mechanism includes an internal gear and a rack housed in the mechanism chamber. The internal gear is fitted onto a rotating shaft, with both ends of the rotating shaft extending out of the mechanism chamber and connected to bearings. A handwheel is also installed at one end of the rotating shaft. The gear meshes with the rack, and an upper gate is provided on the top of the rack. The upper gate is equipped with multiple upper rollers, which are located on the upper part of both sides of the inner wall of the outer casing. The lower opening of the upper guide hopper matches the upper gate.
3. A self-locking, easy-to-clean pneumatic gate according to claim 2, characterized in that: The self-locking mechanism includes a fixed plate with a nut embedded in it. The nut is threadedly connected to a stud. The lower end of the stud is machined into a flat shape to match the tooth clearance of the external gear. The external gear is fitted onto the other end of the shaft. A handle is connected to the top of the stud.
4. A self-locking, easy-to-clean pneumatic gate according to claim 3, characterized in that: The pneumatic opening and closing mechanism includes a pneumatic push rod, the telescopic end of which is connected to the lower gate plate. The lower gate plate is equipped with multiple lower rollers, which are located on the lower part of both sides of the inner wall of the outer shell. The lower opening of the lower guide hopper matches the lower gate plate.
5. A self-locking, easy-to-clean pneumatic gate according to claim 4, characterized in that: The upper and lower guide hoppers are frustum-shaped. The upper opening area of the upper guide hopper is larger than the lower opening area, and the upper opening area of the lower guide hopper is larger than the lower opening area. The lower guide hopper is located directly below the upper guide hopper and directly above the discharge port. The upper opening of the upper guide hopper is in contact with the inlet.