A zero-dust feeding device
By designing a zero-dust feeding device for a sealed feeding chamber and a bag filter, the problem of dust diffusion during solid feeding is solved by utilizing negative pressure suction and a sealing structure. This achieves low-cost, highly versatile sealed feeding, ensuring workshop environmental safety and equipment automation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG QILU HUAXIN HIGH TECH
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-28
AI Technical Summary
Dust is easily generated during the solid feeding process, which affects the workshop environment and workers' health. Moreover, the cost of designing and customizing sealed feeding equipment in a cleanroom is high.
Design a zero-dust feeding device that includes a sealed feeding chamber and a bag filter. The device uses negative pressure suction to draw materials into the bag filter and achieves sealed feeding through a double door and a sealed plush structure. Combined with a ton bag beater, it ensures smooth material discharge.
It achieves a low-cost, highly versatile, and closed feeding method, reducing dust diffusion and ensuring a safe workshop environment and the automation effect of the equipment.
Smart Images

Figure CN224563770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a zero-dust feeding device, belonging to the field of solid feeding technology. Background Technology
[0002] Solid material feeding processes easily generate dust, which severely impacts the workshop environment and affects worker health. Furthermore, in cleanrooms, solid material feeding requires custom-designed, sealed feeding equipment tailored to the specific equipment being fed, significantly increasing costs. Summary of the Invention
[0003] Based on the problems described in the background, the problem that this utility model aims to solve is:
[0004] Ordinary solid feeding methods easily generate dust, so a versatile and low-cost closed feeding method needs to be designed.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A zero-dust feeding device includes a sealed feeding chamber and a bag filter. The bag filter is equipped with a feeding line, and a feeding hopper is provided on the feeding line. The sealed feeding chamber covers the feeding hopper. A manual operation observation hole is provided on the side of the sealed feeding chamber. The interior of the sealed feeding chamber is a feeding channel, and a gantry crane rail is provided on the top of the feeding channel. The feeding channel is equipped with a sealing door. The sealing door is a double-door design, and the top of the two doors is provided with notches that match the gantry crane rail. Sealing felt is fixed to the surface of the notches.
[0007] Preferably, the enclosed feeding chamber is equipped with a ton bag beater, which mimics the action of shaking the ton bag manually when the feeding is not smooth, so as to ensure the continuity of feeding.
[0008] Preferably, the ton bag beater is a cylinder mechanism.
[0009] Preferably, the side wall of the feeding enclosed chamber is also provided with a dust emission line connected to the bag filter.
[0010] This invention utilizes the negative pressure property of a bag filter dust collector. A feeding hopper is installed on the bag filter's infeed line. The suction generated by the negative pressure draws material from the hopper into the bag filter dust collector, where it is then treated and fed into subsequent equipment. To ensure a sealed, dust-free feeding process, a sealed feeding chamber is installed over the feeding hopper. A gantry crane connected to the inside of this chamber lifts ton bags containing material into the sealed chamber. The sealed chamber has a sealing door, which conflicts with the gantry crane's slide rails. Therefore, the sealing door needs to be aligned with the slide rails. This invention features a uniquely designed double-door structure. A notch is provided at the top of the door seam where it matches the gantry crane's sliding rail, allowing the sealed door to open and close normally without obstruction. However, the gantry crane's sliding rail is not a simple solid structure; a sealing structure is required at the notch and rail connection. Ordinary sealing structures are unsuitable for this complex structure. Therefore, this invention uses sealing felt, fixing a thick, dense, hard felt, similar to a brush, to the surface of the notch. This allows gas to pass through while preventing dust from spreading into the environment. To ensure smooth material discharge from the ton bags, a cylinder for tapping the bags, mimicking the action of manually shaking them, is added to improve the smoothness of the discharge.
[0011] The beneficial effects of this utility model are:
[0012] This invention boasts high versatility; simply connecting the bag filter outlet to downstream equipment is sufficient for its application in various standard workshops. Furthermore, it is safe, reliable, and offers excellent automation, utilizing conventional equipment combinations for low cost and minimal wear and tear. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the present utility model.
[0014] Figure 2 Schematic diagram of the enclosed material feeding chamber structure
[0015] Figure 3 Schematic diagram of a sealed door
[0016] In the diagram: 1 is the enclosed feeding chamber; 2 is the bag filter dust collector; 3 is the feeding hopper; 4 is the dust emission line; 11 is the gantry crane slide rail; 12 is the sealing door; 13 is the ton bag beater; 14 is the manual operation observation hole; 121 is the sealing lint; 21 is the feeding line. Detailed Implementation
[0017] Example 1
[0018] A zero-dust feeding device includes a feeding sealed chamber (1) and a bag filter (2). The bag filter (2) is provided with a feeding line (21) and a feeding hopper (3) on the feeding line (21). The feeding sealed chamber (1) covers the feeding hopper (3). The side of the feeding sealed chamber (1) is provided with a manual operation observation hole (14). The inside of the feeding sealed chamber (1) is a feeding channel. The top of the feeding channel is provided with a gantry crane slide rail (11). The feeding channel is provided with a sealing door (12). The sealing door (12) is a double door design. The top of the two doors is provided with a notch to match the gantry crane slide rail (11). The surface of the notch is fixed with sealing felt (121).
[0019] The enclosed feeding chamber (1) is equipped with a ton bag beater (13), which mimics the action of shaking the ton bag manually when the material is not flowing smoothly, so as to ensure the continuity of material feeding.
[0020] The ton bag beater (13) is a cylinder mechanism.
[0021] The side wall of the feeding enclosed chamber (1) is also provided with a dust emission line (4) connected to the bag filter (2).
[0022] Working principle:
[0023] Open the sealed door, operate the gantry crane to lift the ton bag into the feeding space, close the sealed door, start the bag filter dust collector, and make the feeding line have strong suction; open the sealing strip of the bottom discharge port of the ton bag through the manual operation observation hole, and unload the material into the feeding hopper. The material is sucked into the bag filter dust collector through the feeding line. After passing through the bag filter dust collector, the material is unloaded to the downstream equipment from the bag filter dust collector outlet.
[0024] During the unloading process, workers check the material feeding through the manual operation observation port. If the feeding is not smooth, the ton bag beater is started. After the feeding is completed, the ton bag feeding port is sealed through the manual operation observation port, and the ton bag is beaten. The ton bag beater is turned off when no more dust falls.
[0025] To improve the speed of dust handling in the enclosed feeding room, the dust emission line can be turned on.
Claims
1. A zero-dust feeding device, characterized in that, The device includes a feeding sealed chamber (1) and a bag filter (2). The bag filter (2) is equipped with a feeding line (21) and a feeding hopper (3) on the feeding line (21). The feeding sealed chamber (1) is covered by the feeding hopper (3). The feeding sealed chamber (1) has a manual operation observation hole (14) on its side. The inside of the feeding sealed chamber (1) is a feeding channel. The top of the feeding channel is equipped with a gantry crane slide rail (11). The feeding channel is equipped with a sealing door (12). The sealing door (12) is a double door design. The top of the two doors has a notch that matches the gantry crane slide rail (11). The surface of the notch is fixed with sealing felt (121).
2. The zero-dust feeding device according to claim 1, characterized in that, The enclosed feeding chamber (1) is equipped with a ton bag beater (13), which mimics the action of shaking the ton bag manually when the material is not flowing smoothly, so as to ensure the continuity of material feeding.
3. The zero-dust feeding device according to claim 2, characterized in that, The ton bag beater (13) is a cylinder mechanism.
4. The zero-dust feeding device according to claim 1, characterized in that, The side wall of the feeding enclosed chamber (1) is also provided with a dust emission line (4) connected to the bag filter (2).