Unloader with dust suppression function
The unloader, designed by changing the internal air pressure of the bag filter, utilizes a flexible plate and Z-shaped tube structure to solve the problem of existing unloaders requiring external drive, achieving automatic ash unloading, reducing energy consumption and improving equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOTOU QIAOLIAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-05-12
AI Technical Summary
Existing unloaders require external driving power, resulting in high energy consumption and complex structure that is prone to failure.
Design a discharge device that utilizes the air pressure changes inside a bag filter to achieve automatic ash discharge through a flexible plate and Z-shaped tube structure, avoiding external power drive.
It achieves automatic ash unloading without external power, reducing energy consumption and improving equipment reliability and service life.
Smart Images

Figure CN224220985U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of baghouse dust collectors, specifically to a discharge device with dust suppression function. Background Technology
[0002] The unloader plays a crucial role in a baghouse dust collector system, responsible for regularly and efficiently removing accumulated dust from the filter bags. Currently, most unloaders on the market rely on external power to achieve the unloading function, as seen in Chinese Utility Model Patent CN220244544U - Anti-clogging Ash Unloader. However, this patent requires a motor to drive the unloading process. There is an urgent need for an unloader that does not require external power, but cleverly utilizes the internal pressure of the baghouse dust collector to achieve automatic unloading. Utility Model Content
[0003] The main purpose of this invention is to provide a dust-suppressing unloader to solve the problem of existing technologies that require an electric motor for additional energy consumption to complete the ash unloading process.
[0004] To achieve the above objectives, this utility model provides a dust suppression unloader suitable for bag filters. It includes a Z-shaped tube, which comprises two parallel vertical tubes and an inclined tube. The two ends of the inclined tube are connected to one end of each of the two vertical tubes. The end of the top vertical tube away from the inclined tube is connected to the unloading port of the bag filter. It also includes a flexible plate.
[0005] The top of the flexible plate is fixed to the inner wall of one side of the top vertical pipe, and the bottom end passes through the inner cavity of the inclined pipe and is attached to the inner wall of the bottom vertical pipe. The flexible plate can cover the outlet of the inclined pipe.
[0006] Preferably, the inner wall of the flexible plate on the top vertical pipe and the inner wall of the flexible plate on the bottom vertical pipe are on the same plane.
[0007] Preferably, the Z-shaped tube is a bent square tube.
[0008] Preferably, the flexible board is made of rubber.
[0009] Preferably, a square groove communicating with the top vertical pipe is opened on one side wall;
[0010] A movable plate is slidably installed inside the square groove. The movable plate is inserted into the two side walls of the vertical pipe and contacts the opposite side walls of the vertical pipe respectively. The movable plate can block the feed inlet of the inclined pipe.
[0011] The end of the movable plate inserted into the vertical pipe can abut against one of its side walls.
[0012] Preferably, the movable plate is an L-shaped plate, and one end of the L-shaped plate can be inserted into the square groove.
[0013] Preferably, a lever is fixed to one end of the movable plate inserted into the vertical pipe;
[0014] The movable plate is inserted into the vertical pipe at one end, which abuts against one side wall of the vertical pipe, allowing the lever to lift the free end of the flexible plate.
[0015] The beneficial effects of the above scheme are:
[0016] When the dust collector is in operation, its internal cavity is under negative pressure, causing the Z-shaped tube upstream of the flexible plate to also be under negative pressure. At this time, the bottom end of the flexible plate, under the negative pressure, tightly adheres to the inner wall of the bottom vertical tube, thus blocking the discharge port of the inclined tube and effectively maintaining the negative pressure environment inside the dust collector. As the dust collector continues to operate, a large amount of dust gradually accumulates in the internal cavity. This dust first falls into the top vertical tube and then slides further into the inclined tube. Because the bottom end of the flexible plate is tightly attached to the inner wall of the bottom vertical tube, the dust is temporarily retained in the inclined tube. When the dust collector stops working and the internal negative pressure is released, the dust retained in the inclined tube automatically slides out of the discharge port of the inclined tube under gravity and enters the bottom vertical tube, finally completing the ash discharge process. This design cleverly utilizes the air pressure changes during the dust collector's operation to achieve automatic ash discharge without external power, while ensuring the sealing and high efficiency of the dust collector during operation. The advantages of this new technology compared to existing technologies are as follows: This unloader utilizes the air pressure changes inside the dust collector to achieve automatic ash unloading, eliminating the need for an external drive device, significantly reducing energy consumption, and meeting the requirements of energy conservation and environmental protection. The unloader adopts a simple structural design of flexible plates and Z-shaped tubes, reducing complex mechanical parts, lowering the failure rate, and improving the reliability and service life of the equipment. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is a front view structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the three-dimensional Z-shaped tube structure of this utility model;
[0020] Figure 3 yes Figure 2 A schematic diagram of the structure in mid-section view.
[0021] Explanation of reference numerals in the attached figures
[0022] 1. Baghouse dust collector; 2. Z-shaped pipe; 21. Vertical pipe; 22. Inclined pipe; 210. Square channel; 3. Flexible plate; 4. Moving plate; 5. Lever; 6. Bolt. Detailed Implementation
[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example
[0024] like Figures 1-3 As shown, this embodiment provides a dust suppression unloader. This novel device is applicable to a bag filter dust collector 1 and includes a Z-shaped tube 2, which is a bent square tube. The Z-shaped tube 2 includes two parallel vertical tubes 21 and an inclined tube 22. The two ends of the inclined tube 22 are connected to one end of each of the two vertical tubes 21, as shown. Figure 1 As shown, the end of the top vertical pipe 21 away from the inclined pipe 22 is connected to the discharge port of the bag filter 1. The discharge device with dust suppression function also includes a flexible plate 3. The flexible plate 3 is made of rubber. Figure 2 , Figure 3 As shown, the top end of the flexible plate 3 is fixedly connected to the inner wall of one side of the top vertical pipe 21 by multiple bolts 6, and the bottom end of the flexible plate 3 passes through the inner cavity of the inclined pipe 22 and is attached to the inner wall of the bottom vertical pipe 21. The flexible plate 3 can cover the discharge port of the inclined pipe 22. The inner wall of the top vertical pipe 21 where the flexible plate 3 is located is on the same plane as the inner wall of the bottom vertical pipe 21 where the flexible plate 3 is attached.
[0025] When the bag filter 1 is in operation, its internal cavity is under negative pressure, which also causes the Z-shaped pipe 2 upstream of the flexible plate 3 to be under negative pressure. At this time, the bottom end of the flexible plate 3 is tightly attached to the inner wall of the bottom vertical pipe 21 under the action of negative pressure, thereby blocking the discharge port of the inclined pipe 22 and effectively maintaining the negative pressure environment inside the dust collector. As the dust collector continues to operate, a large amount of dust gradually accumulates in the internal cavity. This dust first falls into the top vertical pipe 21 and then slides further into the inclined pipe 22. Because the bottom end of the flexible plate 3 is tightly attached to the inner wall of the bottom vertical pipe 21, the dust is temporarily retained in the inclined pipe 22. When the dust collector stops working and the internal negative pressure is released, the dust retained in the inclined pipe 22 automatically slides out of the discharge port of the inclined pipe 22 under the action of gravity and enters the bottom vertical pipe 21, finally completing the ash unloading process. This design cleverly utilizes the air pressure changes during the operation of the bag filter 1 to achieve automatic ash unloading without external power, while ensuring the sealing and high efficiency of the dust collector during operation. The advantages of this new design compared to existing technologies are: the unloader utilizes the internal air pressure changes of the dust collector to achieve automatic ash unloading, eliminating the need for an external drive device, significantly reducing energy consumption, and meeting energy conservation and environmental protection requirements. The unloader adopts a simple structural design using a flexible plate 3 and a Z-shaped tube 2, reducing complex mechanical parts, lowering the failure rate, and improving the reliability and service life of the equipment.
[0026] like Figure 2 , Figure 3 As shown, a square groove 210 communicating with one side wall of the top vertical pipe 21 is opened therein. A movable plate 4 is slidably installed in the square groove 210. The movable plate 4 is inserted into the two side walls of the vertical pipe 21 and contacts the opposite side walls of the vertical pipe 21 respectively. The movable plate 4 can cover the feed inlet of the inclined pipe 22. One end of the movable plate 4 inserted into the vertical pipe 21 can abut against its side wall. The movable plate 4 is an L-shaped plate, and one end of the L-shaped plate can be inserted into the square groove 210. A lever 5 is fixed at one end of the movable plate 4 inserted into the vertical pipe 21. The end of the movable plate 4 inserted into the vertical pipe 21 abuts against the side wall of the vertical pipe 21, so that the lever 5 can lift the free end of the flexible plate 3. During the operation of the bag filter 1, its internal chamber is maintained in a negative pressure state. At the same time, the Z-shaped pipe 2 above the flexible plate 3 is also in a negative pressure environment. Manually operated, the movable plate 4 is pushed, with its end extending into the vertical pipe 21 and pressed against one side wall of the vertical pipe 21, enabling the lever 5 to smoothly lift the free edge of the flexible plate 3. During this process, the movable plate 4 not only ensures that the negative pressure state inside the dust collector's internal chamber is maintained during operation, but also successfully achieves the ash unloading operation.
[0027] 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 dust suppression unloader, suitable for baghouse dust collectors, comprising a Z-shaped tube, the Z-shaped tube including two parallel vertical tubes and an inclined tube, the two ends of the inclined tube being connected to one end of each of the two vertical tubes, and the end of the top vertical tube furthest from the inclined tube being connected to the unloading port of the baghouse dust collector, characterized in that, Also includes: A flexible plate, the top end of which is fixed to the inner wall of one side of the top vertical pipe, and the bottom end of which passes through the inner cavity of the inclined pipe and is attached to the inner wall of the bottom vertical pipe, the flexible plate being able to cover the outlet of the inclined pipe.
2. The unloader with dust suppression function according to claim 1, characterized in that, The inner wall of the flexible plate on one side of the top vertical pipe and the inner wall of the flexible plate on the other side of the bottom vertical pipe are on the same plane.
3. The unloader with dust suppression function according to claim 1, characterized in that, The Z-shaped tube is a bent square tube.
4. The unloader with dust suppression function according to claim 2, characterized in that, The flexible plate is made of rubber.
5. The unloader with dust suppression function according to claim 1, characterized in that, A square groove communicating with the top vertical tube is opened on one side wall; A movable plate is slidably disposed in the square groove. The movable plate is inserted into the inner side wall of the vertical pipe and contacts the opposite side wall of the vertical pipe respectively. The movable plate can block the feed inlet of the inclined pipe. The end of the movable plate inserted into the vertical pipe can abut against one of its side walls.
6. The unloader with dust suppression function according to claim 5, characterized in that, The movable plate is an L-shaped plate, and one end of the L-shaped plate can be inserted into the square groove.
7. The unloader with dust suppression function according to claim 5, characterized in that, The movable plate is inserted into one end of the vertical pipe and fixed with a lever; One end of the movable plate inserted into the vertical tube abuts against one side wall of the vertical tube, so that the lever can lift the free end of the flexible plate.