Structure for preventing dust from overflowing from powder during unloading
By incorporating a sealed cover, negative pressure ventilation, and a baffle plate, the problem of dust emission during powder unloading was solved, achieving more efficient unloading and environmental protection.
Patent Information
- Application Number
- CN202520487177.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing unloading methods, powder materials are prone to emitting large amounts of dust at the unloading port, leading to material waste, environmental pollution, and safety hazards.
The sealing cover and sealing ring are used to ensure the airtightness of the box. The negative pressure exhaust component is used to extract dust-containing gas in time. The unloading process is optimized by the design of vibrator and guide plate to reduce the retention and collision of powder in the unloading hopper.
It effectively reduces the possibility of powder dust emission, reduces environmental pollution, avoids powder blockage, and improves unloading speed and safety.
Smart Images
Figure CN223865497U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of powder unloading equipment, and more specifically, to a structure for preventing powder from escaping during unloading. Background Technology
[0002] Material unloading is a very common process in various industrial production processes, such as cement, chemical, and grain industries.
[0003] In existing unloading methods, the collision between the material and the unloading port, along with airflow, easily leads to a large amount of dust escaping from the unloading port. This not only wastes materials but also seriously pollutes the working environment, endangers the health of operators, and may even cause dust explosions and other safety accidents, posing a significant safety hazard.
[0004] Therefore, we have made improvements to this by proposing a discharge structure that prevents powder and ash from escaping. Utility Model Content
[0005] The purpose of this invention is to address the issue that the collision between materials and the discharge port, along with airflow, easily leads to a large amount of dust escaping from the discharge port. This not only wastes materials but also severely pollutes the working environment, endangers the health of operators, and may even trigger dust explosions and other safety accidents, posing a significant safety hazard.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] A discharge structure to prevent powder and ash from escaping, in order to improve the above-mentioned problems.
[0008] The application is as follows:
[0009] The device includes a housing, a sealing cover hinged to the top of the housing, a discharge pipe installed on the top of the sealing cover, a discharge hopper installed inside the housing, a fixing plate installed between the discharge hopper and the inner wall of the housing, an inlet and an outlet respectively provided at the top and bottom of the discharge hopper, and a negative pressure exhaust assembly that cooperates with the discharge hopper installed on the outer side of the housing.
[0010] The sealing cover and sealing ring ensure the airtightness of the box during unloading, reducing the possibility of powder spillage. The negative pressure exhaust component promptly extracts and filters dust-laden gas, greatly reducing the pollution of the working environment caused by powder dust. The vibrator allows the powder to fall more smoothly from the discharge port, avoiding blockage in the unloading hopper and improving the unloading speed. The guide plate design guides the powder to the discharge port, reducing the residence time of the powder in the unloading hopper and the contact area with air, further reducing the possibility of dust emission.
[0011] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, a vibrator located inside the box is installed at the bottom of the unloading hopper, and a connecting flange is installed at the bottom of the discharge port.
[0012] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, a handle is installed on the upper side of the sealing cover, a connecting block is installed on the side of the sealing cover, a fixing bolt is threaded on the side of the connecting block, and a fixing groove that mates with the fixing bolt is opened on the side of the box body.
[0013] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, a sealing ring is installed at the bottom of the sealing cover, and the sealing ring is located at the contact part between the sealing cover and the feed inlet of the unloading hopper.
[0014] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, the inner wall of the unloading hopper is equipped with multiple sets of guide plates, which extend from the inlet to the outlet.
[0015] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, the negative pressure exhaust assembly includes a dust collection box installed on the outer side of the box body, and an exhaust fan is installed on the upper side of the dust collection box.
[0016] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, the air inlet of the exhaust fan is equipped with an exhaust pipe that penetrates into the inside of the box and is connected to the unloading hopper. A filter box is installed in the middle of the exhaust pipe, and a dust conveying pipe is installed between the filter box and the dust collection box.
[0017] As a preferred embodiment of the unloading and dust prevention structure provided by this utility model, the exhaust pipe is equipped with a flow control valve at the air inlet of the exhaust fan, and a collection box is slidably fitted on the side of the dust collection box.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: the sealing cover and sealing ring ensure the sealing of the box body during the unloading process, reducing the possibility of powder spillage; the negative pressure exhaust component promptly extracts and filters dusty gas, greatly reducing the pollution of the working environment caused by powder dust emission; the vibrator allows the powder to fall more smoothly from the discharge port, avoiding blockage of powder in the unloading hopper and improving the unloading speed; the guide plate design guides the powder to the discharge port, reducing the residence time of powder in the unloading hopper and the contact area with air, further reducing the possibility of dust emission. Attached Figure Description
[0019] Figure 1A schematic diagram of the overall structure of the unloading and dust prevention structure provided in this application;
[0020] Figure 2 This is a schematic diagram of the side sectional view of the enclosure provided in this application;
[0021] Figure 3 This is a schematic diagram of the connection structure between the sealing cap and the box body provided in this application;
[0022] Figure 4 This is a side sectional view of the unloading hopper provided in this application.
[0023] The image shows:
[0024] 1. Housing; 2. Sealing cover; 3. Discharge pipe; 4. Discharge hopper; 5. Negative pressure exhaust assembly; 501. Dust collection box; 502. Exhaust fan; 503. Exhaust duct; 504. Filter box; 505. Flow control valve; 506. Dust conveying pipe; 507. Collection box; 6. Fixing plate; 7. Inlet; 8. Outlet; 9. Vibrator; 10. Handle; 11. Sealing ring; 12. Connecting block; 13. Fixing bolt; 14. Fixing groove; 15. Guide plate; 16. Connecting flange. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the 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.
[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0033] Example 1
[0034] Please refer to Figure 1-4 A structure for preventing dust emission during unloading includes: a housing 1; a sealing cover 2 hinged to the top of the housing 1; a discharge pipe 3 installed on the top of the sealing cover 2; a discharge hopper 4 installed inside the housing 1; a fixing plate 6 installed between the discharge hopper 4 and the inner wall of the housing 1; an inlet 7 and an outlet 8 respectively provided at the top and bottom of the discharge hopper 4; and a negative pressure exhaust assembly 5 installed on the outer side of the housing 1 to cooperate with the discharge hopper 4. A vibrator 9 located inside the housing 1 is installed at the bottom of the discharge hopper 4, and a connecting flange 16 is installed at the bottom of the outlet 8. A handle 10 is installed on the upper side of the sealing cover 2, and a connecting block 12 is installed on the side of the sealing cover 2. A fixing bolt 13 is threaded onto the side of the connecting block 12, and a fixing groove 14 is opened on the side of the housing 1 to cooperate with the fixing bolt 13. A sealing ring 11 is installed at the bottom of the sealing cover 2, and the sealing ring 11 is located at the contact point between the sealing cover 2 and the inlet 7 of the discharge hopper 4. The inner wall of the unloading hopper 4 is equipped with multiple sets of guide plates 15, which extend from the feed inlet 7 to the discharge outlet 8.
[0035] Implementation process: Open the sealing cover 2 with handle 10, and pour the powder to be unloaded into the unloading hopper 4 through the unloading pipe 3 and the inlet 7. At this time, the sealing ring 11 can prevent the powder from leaking from the contact point between the sealing cover 2 and the inlet 7 of the unloading hopper 4 during the pouring process. After unloading is completed, close the sealing cover 2, rotate the fixing bolt 13 to make it cooperate with the fixing groove 14 on the side of the box 1, thereby fixing the sealing cover 2 and ensuring the airtightness of the box 1. Turn on the vibrator 9. The vibrator 9 generates vibration, which causes the powder in the unloading hopper 4 to fall smoothly through the outlet 8. During the falling process of the powder, the guide plate 15 changes the flow path of the powder, so that the powder moves more evenly to the outlet 8, avoiding local accumulation and blockage of powder in the unloading hopper 4.
[0036] Benefits of implementation: The sealing cover 2, together with the sealing ring 11, ensures the airtightness of the inside of the box 1 during the unloading process, reducing the possibility of powder spillage.
[0037] Example 2
[0038] The negative pressure exhaust assembly 5 includes a dust collection box 501 installed on the outer side of the housing 1, and an exhaust fan 502 installed on the upper side of the dust collection box 501. An exhaust duct 503 is installed at the air inlet of the exhaust fan 502, penetrating into the housing 1 and communicating with the unloading hopper 4. A filter box 504 is installed in the middle of the exhaust duct 503, and a dust conveying pipe 506 is installed between the filter box 504 and the dust collection box 501. A flow control valve 505 is installed at the air inlet of the exhaust duct 503, and a collection box 507 is slidably fitted onto the side of the dust collection box 501.
[0039] Implementation Process: The negative pressure exhaust assembly 5 is activated, and the exhaust fan 502 generates suction, drawing out the dust-laden gas generated during unloading from the unloading hopper 4 through the exhaust duct 503. As the dust-laden gas passes through the filter box 504 in the middle of the exhaust duct 503, the dust is filtered and intercepted, preventing dust particles from entering the exhaust fan and extending its service life. The purified gas continues to be discharged through the exhaust duct 503. The filtered dust is then transported to the dust collection box 501 through the dust conveying pipe 506. The collection box 507 can be periodically removed to clean the collected dust. The flow control valve 505 adjusts the gas flow rate within the exhaust duct 503, adjusting the exhaust intensity according to the actual unloading situation to ensure effective dust collection without excessive exhaust affecting the unloading process.
[0040] Benefits of implementation: The dust-laden gas generated during unloading in the unloading hopper 4 can be extracted and collected for dust collection.
[0041] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.
Claims
1. A structure for preventing powder and ash emission during unloading, characterized in that, include: The box (1) has a sealing cover (2) hinged to the top of the box (1), and a discharge pipe (3) is installed on the top of the sealing cover (2). A discharge hopper (4) is installed inside the box (1). A fixing plate (6) is installed between the discharge hopper (4) and the inner wall of the box (1). The top and bottom of the discharge hopper (4) are respectively provided with a feed inlet (7) and a discharge outlet (8). A negative pressure exhaust assembly (5) that cooperates with the discharge hopper (4) is installed on the outer side of the box (1).
2. The unloading structure for preventing powder and ash emission according to claim 1, characterized in that, The bottom of the unloading hopper (4) is equipped with a vibrator (9) located inside the housing (1), and the bottom of the discharge port (8) is equipped with a connecting flange (16).
3. The unloading structure for preventing powder and ash emission according to claim 1, characterized in that, The upper side of the sealing cover (2) is equipped with a handle (10), the side of the sealing cover (2) is equipped with a connecting block (12), the side of the connecting block (12) is threaded with a fixing bolt (13), and the side of the box (1) is provided with a fixing groove (14) that cooperates with the fixing bolt (13).
4. The unloading structure for preventing powder and ash emission according to claim 1, characterized in that, The bottom of the sealing cover (2) is equipped with a sealing ring (11), which is located at the contact point between the sealing cover (2) and the feed inlet (7) of the unloading hopper (4).
5. The unloading structure for preventing powder and ash emission according to claim 1, characterized in that, The inner wall of the unloading hopper (4) is equipped with multiple sets of guide plates (15), which extend from the feed inlet (7) to the discharge outlet (8).
6. The unloading structure for preventing powder and ash emission according to claim 1, characterized in that, The negative pressure exhaust assembly (5) includes a dust collection box (501) installed on the outer side of the box (1), and an exhaust fan (502) is installed on the upper side of the dust collection box (501).
7. The unloading structure for preventing powder and ash emission according to claim 6, characterized in that, The exhaust fan (502) has an exhaust pipe (503) that runs through the inside of the housing (1) and connects to the unloading hopper (4). A filter box (504) is installed in the middle of the exhaust pipe (503). A dust conveying pipe (506) is installed between the filter box (504) and the dust collection box (501).
8. The unloading structure for preventing powder and dust emission according to claim 7, characterized in that, The exhaust duct (503) is equipped with a flow control valve (505) at the air inlet of the exhaust fan (502), and a collection box (507) is slidably fitted on the side of the dust collection box (501).