Environment-friendly and safe dust collecting and recycling device

Abstract

The invention relates to the technical field of dust treatment equipment, and discloses an environment-friendly and safe dust collection and recovery device which comprises a dust collection system (2), a dust washing system (3), a recovery and collection system (4) and an exhaust system (5) which are mounted in a shell (1), the dust collection system (2) is positioned above the shell (1); the dust washing system (3) is installed in a dust washing cavity (6) of the dust collection system (2) and located between an air inlet (7) and an inclined gas filtering piece (8), and an inclined downward flow guide plate (9) is installed below the dust washing system (3); the recycling and collecting system (4) is positioned below the guide plate (9); and a solvent circulating pump (10) of the recovery and collection system (4) is connected with a solvent spraying head (12) of the dust collection system (2) through a circulating pipeline (11). Dust diffusion is rapidly inhibited, dust accumulation is reduced, the continuous working time of dust removal equipment is greatly prolonged, and the cleaning and maintenance cost is obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of dust treatment equipment technology, specifically to an environmentally friendly and safe dust collection and recycling device. Background Technology

[0002] In the production processes involving powdery materials in industries such as chemicals, materials, pharmaceuticals, pesticides, additives, and precious metals, dust generation or diffusion occurs at multiple stages, including crushing, screening, packaging, and feeding. Dust control is a crucial step in ensuring a safe working environment and reducing environmental pollution. Traditional dust control devices often suffer from low efficiency and complex operation. Furthermore, most existing technologies employ a single filtration mechanism, making it difficult to achieve graded dust collection, allowing fine particles to easily escape, affecting recovery efficiency and emission compliance. Simultaneously, maintaining such devices typically relies on manual intervention, increasing labor costs and potentially posing health risks due to exposure to harmful dust. With increasingly stringent environmental regulations, the industrial sector urgently needs a continuously operating, highly efficient, graded dust treatment system to improve operational safety.

[0003] Dust particles / microparticles generally have strong adhesion, while filters or filter cloths often have strong adsorption. The function of filters / cloths used in almost all dust removal facilities is to block dust particles and microparticles from passing through (hence their pore size is often very small). However, compared to household vacuum cleaners (which have mechanically mixed components and relatively small dust volumes), the dust composition in industrial production processes is more homogeneous. Frequent clogging of industrial dust filters / cloths leads to low dust removal efficiency and damage to filters / cloths due to strong fan suction, which are key problems faced by almost all current industrial dust removal equipment. CN219682091U discloses a dust collection device for pulverizing and packaging traditional Chinese medicine dust particles / microparticles with mechanical material properties. Its dust removal in the practice of Chinese medicine manufacturing industry is obviously difficult to implement: it not only cannot solve the problem of rapid and frequent clogging of the filter screen / cloth, but also the local space in the device makes it prone to frequent fan failure due to dust blockage, frequent damage to the filter screen / cloth, and even obvious safety hazards in the operation of the fan. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an environmentally friendly and safe dust collection and recycling device that overcomes the problem of frequent clogging of dust filters / cloths and quickly suppresses dust diffusion.

[0005] To address the above technical problems, this invention provides an environmentally friendly and safe dust collection and recovery device, comprising a dust collection system, a dust washing system, a recovery and collection system, and an exhaust system installed in a housing; the dust collection system is located above the housing; the dust washing system is installed in the dust washing chamber of the dust collection system, and is located between the air inlet and the inclined gas filter; a downward-sloping guide plate is installed below the dust washing system; the recovery and collection system is located below the guide plate; the solvent circulation pump of the recovery and collection system is connected to the solvent spray head of the dust collection system through a circulation pipeline.

[0006] By adopting the above technical solution, targeting the specific component dust generated in industrial production, a dust collection system is installed at the air inlet, and a dust washing system is installed within the dust collection system. Solvent spray heads spray and wet the dust flowing through the dust washing system. Utilizing the good solubility of the solvent in the dust components, the dust is wetted and dissolved, cleverly overcoming the pain point of frequent clogging of dust filters / cloths, quickly inhibiting dust diffusion, reducing dust accumulation, greatly extending the continuous working time of the dust removal equipment, and significantly reducing cleaning and maintenance costs.

[0007] Preferably, the dust collection system mainly consists of an air inlet, a dust washing chamber, a gas filter, and a dust collection fan; the air inlet is connected to the dust washing chamber and faces the direction of the dust generation source; a gas filter is installed on the side of the dust washing chamber opposite to the air inlet; a dust collection fan is installed on one side of the gas filter, separated from the dust washing chamber, and the dust collection fan is installed on the top surface inside the housing.

[0008] By adopting the above technical solution, the dust is drawn into the dust washing chamber through the air inlet by the suction fan, and the residual dust and solvent that drift towards the suction fan after dust washing are blocked in the dust washing chamber by the gas filter.

[0009] Preferably, the dust washing system includes a solvent wetting component and a solvent spraying component installed in the dust washing chamber; the solvent wetting component mainly consists of a mesh support and a solvent adsorption layer covering its surface, and the mesh support is installed in the dust washing chamber; the solvent spraying component consists of a solvent circulation pump, circulation pipeline, and porous solvent spraying head, the solvent spraying head is installed on the inner top surface of the dust washing chamber, and the solvent circulation pump is installed on the inner wall of the dust washing liquid receiving tank of the recycling and collection system.

[0010] By adopting the above technical solution, the solvent spray head has a porous structure and is installed on the inner top surface of the dust washing chamber, uniformly spraying solvent onto the solvent wetting component. The uniformly sprayed solvent continuously replenishes the solvent adsorption layer, ensuring that the layer remains constantly moist, thus achieving continuous and uniform dissolution of dust. The solvent circulation pump draws the solvent back from the dust washing liquid receiving tank and transports it back to the solvent spray head through a circulation pipeline for re-spraying, realizing solvent recycling, significantly reducing solvent consumption, and lowering enterprise operating costs.

[0011] Preferably, the recycling and collection system mainly consists of a washing liquid receiving tank, a discharge port, and valves; the washing liquid receiving tank is provided with a discharge port on its side wall, and a valve is installed on the discharge port.

[0012] By adopting the above technical solution, the dust washing liquid receiving tank serves as a transfer and storage tank for the circulating spraying solvent, providing a source of circulating solvent for the solvent spraying assembly.

[0013] Preferably, the exhaust system, as the air outlet component at the rear end of the dust collector fan, includes an adsorption element with adsorption function and an air outlet frame; the adsorption element is installed on the air outlet frame, and the air outlet frame is installed at the air outlet of the housing; the adsorption element is mainly composed of an adsorption frame and activated carbon filler with adsorption properties.

[0014] By adopting the above technical solution, the exhaust system uses adsorption components to perform final filtration and adsorption of residual microparticles and harmful gases in the dust gas, which can significantly improve the cleanliness of the exhaust gas, avoid secondary pollution caused by unclean gas, and improve the reliability of the entire dust treatment device.

[0015] Preferably, a PLC controller is mounted on the housing. The PLC controller is electrically connected to the vacuum fan and the solvent circulation pump.

[0016] By adopting the above technical solutions, the level of automation control and operational stability of the entire device can be improved.

[0017] Preferably, the discharge outlet of the recycling system is tilted downwards.

[0018] By adopting the above technical solutions, it is convenient to sample, empty and clean the recycling pool.

[0019] Preferably, the solvent in the dust washing liquid receiving tank is acetone or dichloromethane.

[0020] By adopting the above technical solution, the dust generated during the production of chlorantraniliprole technical material can be dissolved with acetone or dichloromethane, and the dissolution effect is good.

[0021] Preferably, the solvent in the sedimentation tank is water.

[0022] By adopting the above technical solution, it is relatively easy to collect the key intermediate (S)-2-aminobutyramide hydrochloride, thus improving the collection efficiency.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Compared with existing dust treatment solutions, this invention targets specific dust components generated in industrial production. By installing a dust collection system at the air inlet, and a dust washing system within the dust collection system, a solvent spray head sprays and wets the dust flowing through the dust washing system. Utilizing the excellent solubility of the solvent in the dust components, the dust is wetted and dissolved, cleverly overcoming the pain point of frequent clogging of dust filters / cloths. This quickly inhibits dust diffusion, reduces dust accumulation, greatly extends the continuous working time of the dust removal equipment, and significantly reduces cleaning and maintenance costs.

[0024] 2. Compared with existing dust treatment solutions, this invention addresses specific component dust generated in industrial production by using a guide plate to guide the cleaning solvent from the dust washing system into a recovery and collection system for recycling and sedimentation. This achieves the purpose of dust collection and treatment while scientifically reducing the amount of dust waste to be treated, especially for those difficult-to-treat substances. It also reasonably reduces the loss and waste of industrial products, especially those with high added value.

[0025] 3. In this invention, the dust washing chamber is connected to the air inlet, providing a relatively independent processing space for dust. After entering the dust washing chamber, the dust interacts with the dust washing system, undergoing thorough wetting and dissolution, allowing more dust to be effectively processed within the chamber and improving dust treatment efficiency. Attached Figure Description

[0026] Figure 1 This is the front view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a perspective view of the present invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 The main view shows the partition installed in the middle of the dust washing liquid receiving tank of the present invention; Figure 6 A side view of the dust washing liquid receiving tank of the present invention with a partition in the middle.

[0027] Drawing numbers: 1. Housing, 2. Dust collection system, 3. Dust washing system, 4. Recycling and collection system, 5. Exhaust system, 6. Dust washing chamber, 7. Air inlet, 8. Gas filter, 9. Baffle plate, 10. Solvent circulation pump, 11. Circulation pipeline, 12. Solvent spray head, 13. Dust collection fan, 14. Partition plate, 15. Mesh support, 16. Solvent adsorption layer, 17. Overflow tank, 18. Dust washing liquid receiving tank, 19. Discharge port, 20. Valve, 21. Adsorption element, 22. Air outlet frame, 23. Air outlet, 24. Extension pipe, 25. Inspection door, 26. PLC controller, 27. Sedimentation tank, 28. Solvent wetting assembly. Detailed Implementation Example 1

[0028] like Figure 1-4 As shown, an environmentally friendly and safe dust collection and recovery device includes a dust collection system 2, a dust washing system 3, a recovery and collection system 4, and an exhaust system 5 installed in a housing 1. The dust collection system 2 is located above the housing 1; the dust washing system 3 is installed in the dust washing chamber 6 of the dust collection system 2, and is located between the air inlet 7 and the inclined gas filter 8. A downward-sloping guide plate 9 is installed below the dust washing system 3. The recovery and collection system 4 is located below the guide plate 9; the solvent circulation pump 10 of the recovery and collection system 4 is connected to the solvent spray head 12 of the dust collection system 2 through a circulation pipeline 11.

[0029] The dust collection system 2 mainly consists of an air inlet 7, a dust washing chamber 6, a gas filter 8, and a dust collection fan 13. The air inlet 7 is connected to the dust washing chamber 6 and faces the direction of dust generation. The gas filter 8 is installed on the side of the dust washing chamber 6 opposite to the air inlet 7. The dust collection fan 13 is installed on the other side of the gas filter 8, separated from the dust washing chamber 6. The dust collection fan 13 is installed on the top surface inside the housing 1, facing the air inlet through the gas filter plate. The dust is drawn into the dust washing chamber 6 through the air inlet 7 by the air force of the dust collection fan 13, and the residual dust and solvent that drift towards the dust collection fan 13 after dust washing are blocked in the dust washing chamber 6. The gas filter 8 is installed at an angle, so that the dust it filters and blocks can drip or flow into the dust washing chamber 6 with the solvent. The dust washing chamber 6 is connected to the air inlet 7, providing a relatively independent processing space for dust. After dust enters the dust washing chamber 6, it interacts with the dust washing system 3, undergoing thorough wetting or dissolution treatment. This allows more dust to be effectively processed within the dust washing chamber 6, improving dust treatment efficiency. The gas filter element 8 is installed at an angle on the side of the dust washing chamber 6 opposite to the air inlet 7. The suction fan 13 is positioned on one side of the gas filter element 8. This ensures that as the gas treated by the dust washing system 3 flows towards the suction fan 13, residual dust and solvent are effectively blocked by the gas filter element 8, preventing them from entering the suction fan 13. Simultaneously, the angled installation facilitates the filtering and blocking of dust, which drips or flows with the solvent into the recovery and collection system 4, further improving the dust washing effect.

[0030] The dust washing system 3 includes a solvent wetting assembly 28 and a solvent spraying assembly installed in the dust washing chamber 6. The solvent wetting assembly 28 mainly consists of a mesh support 15 and a solvent adsorption layer 16 covering its surface. The mesh support 15 is installed in the dust washing chamber 6 via a mounting bracket. The solvent spraying assembly consists of a solvent circulation pump 10, a circulation pipeline 11, and one or more porous solvent spray heads 12. The solvent spray head 12 has a porous structure and is installed on the inner top surface of the dust washing chamber 6, ensuring that the sprayed solvent can drip evenly onto the solvent wetting assembly 28. The evenly sprayed solvent can continuously replenish the solvent adsorption layer 16, ensuring that the solvent adsorption layer 16 is always in a wet state, achieving continuous and uniform wetting or dissolution of dust. The solvent circulation pump 10 is installed on the inner wall of the dust washing liquid receiving tank 18 of the recovery and collection system 4. The solvent circulation pump 10 draws the solvent back from the dust washing liquid receiving tank 18 and transports it to the solvent spray head 12 through the circulation pipeline 11 for re-spraying, realizing the recycling of solvent, greatly reducing solvent consumption and lowering the company's operating costs.

[0031] The exhaust system 5, serving as the air outlet component at the rear end of the dust collector 13, includes an adsorption element 21 with adsorption function and an air outlet frame 22; the adsorption element 21 is mounted on the air outlet frame 22. The air outlet frame 22 is mounted at the air outlet 23 of the housing 1 and is sized to match the air outlet 23. The adsorption element 21 mainly consists of an adsorption frame and activated carbon filler with adsorption properties, in order to adsorb and purify trace amounts of toxic and harmful gaseous substances that may be present in the dust gas. If necessary, more targeted adsorption fillers can be used according to the specific dust component properties. The exhaust system 5 uses the adsorption element 21 to perform final filtration and adsorption of residual fine particles and harmful gases in the dust gas, which can significantly improve the cleanliness of the exhaust gas, avoid secondary pollution caused by unclean gas, and improve the reliability of the entire dust treatment device.

[0032] An extension tube 24 is installed on the air inlet 7 of the housing 1. Depending on the specific application scenario of the dust-generating workshop or dust-generating process, the air inlet is extended to the position and angle where dust collection is most effective or efficient. If necessary, the air inlet can be made into a suitable shape and size.

[0033] A PLC controller 26 or an AI automatic control system is installed on the housing 1. The PLC controller 26 or the AI ​​automatic control system is electrically connected to the dust extraction fan 13 and the solvent circulation pump 10, which enhances the flexibility of the production process and improves the automation control level and operational stability of the entire device.

[0034] The discharge port 19 of the recycling system 4 is tilted downwards to facilitate sampling, emptying, and cleaning of the recycling pool. If necessary, the washing liquid receiving pool 18 can be made into a drawer type, or an inspection door 25 can be installed at an appropriate location on the housing 1 to facilitate cleaning and maintenance of the washing liquid receiving pool.

[0035] The exhaust outlet 23 can be directly connected to the tail gas treatment network of the corresponding industrial production project without the use of activated carbon or other filtration and adsorption measures, so as to achieve unified tail gas treatment and compliant emissions. The principle for selecting the solvent used for wetting / dissolving is to comprehensively weigh the solubility of the main components of the dust and the safety of the solvent, prioritizing solvents with good solubility, non-toxicity (water), low toxicity, and low volatility, preferably acetone or dichloromethane. Chlorantraniliprole technical is a substance with strong insecticidal activity, and its dust poses certain environmental risks. At the same time, these substances also have good economic value. Chlorantraniliprole technical is poorly soluble in water but has good solubility in acetone or dichloromethane. These two solvents can be preferentially selected as dust washing solvents for dust removal and dust recovery in the product packaging process. Acetone or dichloromethane are both relatively volatile organic solvents, and will generate some heat when wetting and dissolving dust. The dust washing chamber 6 can be cooled (≤35℃) by installing a spiral water-cooled circulation pipe on the inner wall of the dust washing chamber 6. It is also possible to consider connecting the air outlet 23 to the factory's exhaust gas treatment RTO system.

[0036] The recycling and collection system 4 mainly consists of a washing liquid receiving tank 18, a discharge port 19, and a valve 20. The washing liquid receiving tank 18 has a discharge port 19 on its side wall, and a valve 20 is installed on the discharge port 19. The washing liquid receiving tank 18 serves as a transfer and storage tank for the circulating spraying solvent, providing a source of circulating solvent for the solvent spraying assembly. Example 2

[0037] When the solubility of dust is not very good, a baffle 14 is installed in the middle of the dust washing liquid receiving tank 18, such as... Figure 5 , 6 As shown, the receiving pool is divided into a sedimentation tank 27 for dust and an overflow tank 17. The key intermediate (S)-2-aminobutyramide hydrochloride in multifunctional pharmaceuticals (such as buvascarb, levetiracetam, etc.) is slightly soluble in water (easily supersaturated). This substance is a hydrochloride salt, which is relatively hygroscopic and has good wettability in water. Considering its role as a pharmaceutical substance, its dust is collected in sedimentation tank 27 and then further processed.

[0038] This application targets specific component dust generated in industrial production. By installing a dust collection system 2 at the air inlet 7, and a dust washing system 3 installed in the dust collection system 2, a solvent spray head 12 sprays and wets the dust flowing through the dust washing system 3. The good solubility of the solvent in the dust components wets and dissolves the dust, cleverly overcoming the pain point of frequent clogging of dust filters / cloths, quickly inhibiting dust diffusion, reducing dust accumulation, avoiding dust buildup, greatly extending the continuous working time of the dust removal equipment, and significantly reducing cleaning and maintenance costs.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly and safe dust collection and recycling device, characterized in that: The system includes a vacuuming system (2), a dust washing system (3), a recycling system (4), and an exhaust system (5) installed in the housing (1); the vacuuming system (2) is located above the housing (1); the dust washing system (3) is installed in the dust washing chamber (6) of the vacuuming system (2), the dust washing system (3) is located between the air inlet (7) and the inclined gas filter (8), and a downward-sloping guide plate (9) is installed below the dust washing system (3); the recycling system (4) is located below the guide plate (9); the solvent circulation pump (10) of the recycling system (4) is connected to the solvent spray head (12) of the vacuuming system (2) through the circulation pipeline (11).

2. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: The dust collection system (2) mainly consists of an air inlet (7), a dust washing chamber (6), a gas filter (8), and a dust collection fan (13). The air inlet (7) is connected to the dust washing chamber (6) and faces the direction of the dust generation source. The gas filter (8) is arranged on the side of the dust washing chamber (6) opposite to the air inlet (7). Separated from the dust washing chamber (6), the dust collection fan (13) is arranged on one side of the gas filter (8) and is installed on the top surface inside the housing (1).

3. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: The dust washing system (3) includes a solvent wetting component (28) and a solvent spraying component installed in the dust washing chamber (6); the solvent wetting component (28) is mainly composed of a mesh support (15) and a solvent adsorption layer (16) covering its surface, and the mesh support (15) is installed in the dust washing chamber (6); the solvent spraying component is composed of a solvent circulation pump (10), a circulation pipeline (11), and a porous solvent spraying head (12), and the solvent spraying head (12) is installed on the inner top surface of the dust washing chamber (6), and the solvent circulation pump (10) is installed on the inner wall of the dust washing liquid receiving pool (18) of the recycling and collection system (4).

4. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: The recycling and collection system (4) mainly consists of a washing liquid receiving tank (18), a discharge port (19) and a valve (20); the washing liquid receiving tank (18) has a discharge port (19) on its side wall, and a valve (20) is installed on the discharge port (19).

5. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: The exhaust system (5) serves as the air outlet component at the rear end of the vacuum blower (13), including an adsorption component (21) with adsorption function and an air outlet frame (22); the adsorption component (21) is installed on the air outlet frame (22), and the air outlet frame (22) is installed at the air outlet (23) of the housing (1).

6. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: A PLC controller (26) is installed on the housing (1), and the PLC controller (26) is electrically connected to the dust extraction fan (13) and the solvent circulation pump (10).

7. The environmentally friendly and safe dust collection and recovery device according to claim 1, characterized in that: The discharge port (19) of the recycling system (4) is tilted downwards.

8. The environmentally friendly and safe dust collection and recovery device according to claim 4, characterized in that: The washing liquid receiving tank (18) is provided with a partition (14) in the middle, which divides the washing liquid receiving tank (18) into a sedimentation tank (27) and an overflow tank (17).

9. An environmentally friendly and safe dust collection and recovery device according to any one of claims 1-7, characterized in that: The solvent in the dust washing liquid receiving tank (18) is acetone or dichloromethane.

10. An environmentally friendly and safe dust collection and recovery device according to any one of claims 1-8, characterized in that: The solvent in the sedimentation tank (27) is water.

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