A sintered plate dust collector
By using a sintered plate dust collector and an air blowing assembly in the NdFeB magnetic powder collection, the problems of easy clogging and spontaneous combustion of magnetic powder in PE rod dust collectors have been solved, resulting in a longer service life and improved safety of the dust collector.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TUNA ENVIRONMENTAL SCI & TECH
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-23
AI Technical Summary
Existing PE rod dust collectors are prone to clogging, have low back-flushing pressure, and short lifespan when collecting NdFeB magnetic powder. Furthermore, NdFeB magnetic powder is prone to oxidation and spontaneous combustion in air.
Using sintered plastic plates as filter elements, nitrogen gas is blown into the sintered plastic plates by combining an air blowing component. The filtration and back-blowing effects of the sintered plastic plates extend the service life and prevent the magnetic powder from spontaneously combusting.
It extends the service life of the dust collector, reduces the amount of regular cleaning work, improves safety, and stabilizes the resistance curve.
Smart Images

Figure CN224388402U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of magnetic material processing equipment, and more specifically, to a sintered plastic plate dust collector. Background Technology
[0002] Currently, the domestic sintered NdFeB strong magnetic material industry often uses PE rod dust collectors to collect NdFeB magnetic powder. However, PE rod dust collectors are prone to clogging, have low back-blowing pressure, high resistance, and short lifespan, and need to be opened and cleaned regularly. At the same time, NdFeB magnetic powder will rapidly oxidize and release heat when exposed to air, which can cause spontaneous combustion.
[0003] Therefore, a new solution is needed to address the above problems. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a sintered plastic plate dust collector.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A sintered plate dust collector for filtering NdFeB magnetic powder includes a housing. A clean air chamber is installed at the top of the housing and is isolated from the housing. An air outlet is provided at the upper part of the clean air chamber and communicates with its inner cavity. A vertically arranged sintered plate is installed inside the housing. The air outlet of the sintered plate extends through the clean air chamber and communicates with its inner cavity. An air blowing assembly for blowing nitrogen into the air outlet of the sintered plate is provided inside the clean air chamber. A dust hopper communicating with the inner cavity of the housing is installed at the bottom of the housing, and an air inlet is installed on the dust hopper.
[0007] Furthermore, the air blowing assembly includes an air pipe and a nozzle mounted on the air pipe, the nozzle being used to blow nitrogen into the air outlet of the sintered plate.
[0008] Furthermore, multiple sintered plates are provided, which are arranged in parallel and combined to form a cylindrical structure, with a gap between adjacent sintered plates.
[0009] Furthermore, a box-type filter is installed in the air purification chamber, and the box-type filter is located above the air outlet of the sintered plastic plate.
[0010] The beneficial effects of this invention are as follows: By using a sintered plastic plate as a filter element, the service life of the dust collector is extended. Simultaneously, nitrogen gas is blown into the sintered plastic plate using an air-blowing assembly. This extends the plate's lifespan and reduces the workload of periodically opening the dust collector for cleaning. Furthermore, it prevents the magnetic powder from spontaneously combusting upon contact with air, improving safety. The sintered plastic plate also exhibits good back-blowing effect and a stable resistance curve during magnetic powder cleaning. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of a sintered plate dust collector in this embodiment;
[0012] Figure 2 This is a cross-sectional view of the sintered plate in this embodiment;
[0013] Figure 3 This is a top view schematic diagram of a connection structure for multiple plastic sintered plates in this embodiment.
[0014] Reference numerals: 1. Housing; 2. Clean air chamber; 3. Air outlet; 4. Plastic plate; 5. Ash hopper; 6. Air inlet; 7. Air pipe; 8. Nozzle; 9. Box filter. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Example: A sintered plastic plate dust collector, such as Figures 1-3 As shown, the device includes a housing 1, a clean air chamber 2 installed on the top of the housing 1, the clean air chamber 2 being isolated from the housing 1, i.e., the inner cavity of the clean air chamber 2 not communicating with the inner cavity of the housing 1, an air outlet 3 connected to the inner cavity of the clean air chamber 2 on the upper part, a vertically arranged sintered plate 4 installed inside the housing 1, the sintered plate 4 being used to filter NdFeB magnetic powder, the sintered plate 4 having a plate-shaped structure with an air outlet connected to the inner cavity of the sintered plate 4, the air outlet of the sintered plate 4 penetrating into the clean air chamber 2 and communicating with the inner cavity of the clean air chamber 2, an air blowing assembly for blowing nitrogen into the air outlet of the sintered plate 4 located at the air outlet of the sintered plate 4 inside the clean air chamber 2, and an ash hopper 5 connected to the inner cavity of the housing 1 installed at the bottom of the housing 1, an air inlet 6 installed on the ash hopper 5.
[0017] During use, in the filtration stage, the gas containing NdFeB magnetic powder enters the ash hopper 5 through the air inlet 6. Large NdFeB magnetic powder particles fall directly to the bottom of the ash hopper 5 under the action of inertia and gravity, while small NdFeB magnetic powder particles drift to the sintered plate 4 under the action of the gas. The sintered plate 4 filters the gas containing NdFeB magnetic powder, causing the NdFeB magnetic powder to be trapped on the outer surface of the sintered plate 4. The filtered gas enters the clean air chamber 2 through the air outlet of the sintered plate 4, and is then discharged through the air outlet 3, or discharged to the air compressor through a pipeline.
[0018] During the cleaning stage, the air blowing assembly blows nitrogen into the air outlet of the sintered plate 4. The nitrogen flows through the air outlet of the sintered plate 4 into the inner cavity of the sintered plate 4. Under the action of the reverse airflow, the NdFeB magnetic powder adhering to the outer surface of the sintered plate 4 is peeled off and falls into the ash hopper 5. After cleaning, the discharge valve at the bottom of the ash hopper 5 is opened, and the NdFeB magnetic powder in the ash hopper 5 is discharged into a closed storage device and transported out periodically.
[0019] By using the sintered plastic plate 4 as a filter element, the service life of the dust collector is extended. Simultaneously, the NdFeB magnetic powder adhering to the outer surface of the sintered plastic plate 4 is cleaned using an air-blowing assembly. This extends the service life of the sintered plastic plate 4, reducing the workload of periodically opening the dust collector for cleaning, and also prevents the magnetic powder from spontaneously combusting upon contact with air, improving safety. The sintered plastic plate 4 is installed vertically, and the direction of the back-blowing airflow during cleaning (from the inside out) is consistent with the direction of the magnetic powder's downward fall due to gravity, eliminating the need to overcome the inertia of the magnetic powder and reducing energy consumption for cleaning. Furthermore, the sintered plastic plate 4 is a rigid sintered body, preventing structural deformation during magnetic powder cleaning, and ensuring good back-blowing effect and a stable resistance curve during use.
[0020] Furthermore, the blowing assembly includes an air pipe 7 and a nozzle 8 mounted on the air pipe 7. The air pipe 7 is used to deliver nitrogen to the nozzle 8, and the nozzle 8 is used to blow nitrogen into the air outlet of the plastic plate 4.
[0021] Furthermore, the air blowing assembly also includes a gas canister, an air pump, and a solenoid valve. The gas canister stores nitrogen, and its outlet is connected to the input of the air pump. The output of the air pump is connected to the air pipe 7, which pumps the nitrogen from the gas canister into the air pipe 7, from where it flows to the nozzle 8. The solenoid valve is mounted on the air pipe 7 to control its opening and closing. The gas canister, air pump, and solenoid valve can be installed inside or outside the clean air chamber 2, depending on requirements.
[0022] Furthermore, such as Figure 1 As shown, a box-type filter 9 is installed inside the clean air chamber 2, and the box-type filter 9 is located above the air outlet of the sintered plate 4. By setting the box-type filter 9, the gas filtered by the sintered plate 4 can be further filtered, improving the filtration effect and providing an extra layer of protection for the air compressor. In use, since the box-type filter 9 is located above the air outlet of the sintered plate 4, the gas coming out of the air outlet of the sintered plate 4 first comes into contact with the box-type filter 9 and is filtered by the box-type filter 9. The filtered gas flows to the air outlet 3 and is discharged through the air outlet 3.
[0023] Furthermore, such as Figures 1-3As shown, multiple sintered plates 4 are arranged parallel to each other and combined to form a cylindrical structure, with gaps between adjacent sintered plates 4. By using multiple sintered plates 4, the filtration efficiency of the NdFeB magnetic powder is improved. The combination of multiple sintered plates 4 into a cylindrical structure with gaps between adjacent plates serves several purposes: firstly, it improves the pressure resistance of the sintered plates 4; secondly, it allows gas containing NdFeB magnetic powder to contact and be filtered by multiple sintered plates 4, thus enhancing the filtration effect; and thirdly, it improves the aesthetics.
[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A sintered plate dust collector for filtering Nd-Fe-B magnetic powder, comprising a housing (1), characterized in that, The top of the shell (1) is provided with a clean air chamber (2), which is isolated from the shell (1), and the upper part of the clean air chamber (2) is provided with an air outlet interface (3) communicating with the inner cavity thereof; the shell (1) is provided with vertically arranged plastic burning plates (4), the air outlet of the plastic burning plate (4) penetrates the clean air chamber (2) and communicates with the inner cavity of the clean air chamber (2); the clean air chamber (2) is provided with a gas blowing assembly blowing nitrogen into the air outlet of the plastic burning plate (4) at the air outlet of the plastic burning plate (4); the bottom of the shell (1) is provided with a hopper (5) communicating with the inner cavity of the shell (1), and the hopper (5) is provided with an air inlet interface (6).
2. A sintered ceramic plate dust collector according to claim 1, wherein The gas blowing assembly comprises a gas pipe (7) and a nozzle (8) mounted on the gas pipe (7), and the nozzle (8) is used for blowing nitrogen into the air outlet of the plastic burning plate (4).
3. A ceramic filter according to claim 1, wherein A plurality of plastic burning plates (4) are provided, which are arranged in parallel and combined to form a barrel-shaped structure, and gaps are arranged between adjacent two plastic burning plates (4).
4. A ceramic filter according to claim 1, wherein The clean air chamber (2) is provided with a box filter (9) arranged above the air outlet of the plastic burning plate (4).