Explosion-proof wet dust collector

Abstract

This utility model belongs to the field of grinding and dust removal technology, specifically relating to an explosion-proof wet dust collector. It includes a dust removal chamber, with a mounting frame on the top of the chamber to fix a fan. The fan's inlet connects to the inside of the chamber, and its outlet connects to the exhaust port. A dust extraction pipe is installed on the side wall of the chamber, passing through a water extraction pipe and connecting to a circulating water pump. The bottom, top, and middle sections of the chamber are equipped with bottom, upper, and middle partitions at an angle. A liquid seal is formed by submerging the bottom partition by 3mm to 5mm, which, combined with the oblique and reverse airflow channels formed by the multiple partitions, promotes thorough mixing of dust and liquid and condensation of water vapor. The circulating water pump delivers the liquid through a pipe to the nozzle at the inlet of the dust extraction pipe, flushing the inner wall to prevent dust accumulation. This design combines explosion-proof performance with high-efficiency dust removal capabilities, has a compact structure, and low cost, making it suitable for small-scale operating environments such as small and medium-sized processing plants.

Description

Technical Field

[0001] This utility model belongs to the field of grinding and dust removal technology, and specifically relates to an explosion-proof wet dust collector. Background Technology

[0002] During the grinding and polishing of flammable alloys such as titanium, magnesium, and zirconium, a large amount of metal dust is generated. Due to its small particle size and large specific surface area, this dust, when mixed with air and reaching a certain concentration, can easily ignite upon contact with static electricity, friction, or other ignition sources, posing a significant safety hazard. Currently, the industry mainly uses two methods to handle this type of dust: one is dry grinding dust removal, which uses large fans to extract the dust from the work area through pipelines for centralized treatment. However, this method has obvious drawbacks—dry dust removal lacks effective dust wetting and isolation measures, leading to the accumulation of high-concentration dust in the pipelines. Furthermore, the static electricity generated by the friction between the metal dust and the pipe walls can easily become an ignition source, further exacerbating the explosion risk. The second method is some wet dust removal equipment. Although it can reduce the explosion risk by adsorbing dust with liquid, traditional wet dust removal devices are often complex in structure, bulky, and have high initial investment and maintenance costs. They are mainly suitable for large-scale work scenarios and cannot meet the actual needs of small and medium-sized processing plants and workshops for equipment that is "small in footprint, low in investment cost, and easy to install and maintain." Therefore, developing a wet dust removal device suitable for small-scale operating environments, which combines explosion-proof performance with high-efficiency dust removal capabilities, has become an urgent technical problem to be solved in this field. Summary of the Invention

[0003] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof wet dust collector, comprising a dust removal chamber, an installation frame provided on the top wall of the dust removal chamber, a fan fixedly mounted on the installation frame by bolts, the air inlet of the fan being connected to the interior of the dust removal chamber, and the air outlet being connected to the air outlet installed on the top of the dust removal chamber; a dust extraction pipe provided on the side wall of the dust removal chamber, the air outlet of the dust extraction pipe being connected to the interior of the dust removal chamber, and a water extraction pipe extending through the dust extraction pipe, the other end of the water extraction pipe being connected to a circulating water pump, the circulating water pump being placed inside the dust removal chamber;

[0004] A bottom partition is inclinedly arranged at the bottom of the dust removal chamber, an upper partition is inclinedly arranged at the top of the dust removal chamber, and a middle partition is inclinedly arranged between the bottom partition and the upper partition through the side wall of the dust removal chamber.

[0005] As a further improvement of this utility model, dust removal liquid is poured into the bottom of the dust removal chamber, and the dust removal liquid submerges the end of the bottom partition by 3mm to 5mm to form a liquid seal.

[0006] As a further improvement of this utility model, the water level of the dust removal liquid in the dust removal chamber is lower than the air outlet of the dust extraction pipe.

[0007] As a further improvement of this utility model, the bottom partition is installed in the dust removal chamber at a position higher than the air outlet of the dust extraction pipe.

[0008] As a further improvement of this utility model, an oblique airflow channel is formed between the bottom partition and the middle partition, and a reverse airflow channel is formed between the middle partition and the upper partition.

[0009] As a further improvement of this utility model, an air extraction hood is provided at the air inlet of the dust extraction pipe, and the air extraction hood has a conical structure.

[0010] As a further improvement of this utility model, a nozzle is provided at a position near the air inlet of the dust extraction pipe, and the nozzle is connected to the water extraction pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Through the liquid seal design (the dust removal liquid submerges the end of the bottom baffle by 3mm to 5mm), the liquid surface fluctuates under the negative pressure of the fan, which promotes the full mixing of the dust removal liquid and the dust-laden air, significantly improving the dust settling efficiency. At the same time, the oblique airflow channel formed by the bottom baffle and the middle baffle can guide the splashed liquid back down, and the reverse airflow channel formed by the middle baffle and the upper baffle increases the contact area between the air and the liquid, further promoting water vapor condensation, reducing water carried by the air and enhancing the dust collection effect.

[0013] 2. The circulating water pump delivers the dust removal liquid to the nozzle at the inlet of the dust extraction pipe through the water pumping pipe. The liquid flow washes the inner wall of the pipe, thoroughly removing accumulated dust and avoiding fire hazards caused by dust accumulation. Combined with the liquid seal's isolation effect on the outside air, it effectively prevents dust from overflowing and ensures the long-term safe operation of the equipment.

[0014] 3. The nozzle is set at an angle of 30°-45° to the dust extraction pipe. The sprayed liquid and the air intake airflow form a vortex, which strengthens the scouring of the pipe wall and further prevents dust from adhering. The multi-layer inclined baffle airflow channel design (oblique and reverse) works together to improve the efficiency of water vapor condensation and avoid the adhesion of dust inside the equipment caused by liquid splashing, thus ensuring the stability of the system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an explosion-proof wet dust collector.

[0017] The components include: 1. Fan; 2. Dust extraction duct; 3. Bottom partition; 4. Middle partition; 5. Top partition; 6. Air outlet; 7. Circulating water pump; and 8. Nozzle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0019] See Figure 1 As shown, an explosion-proof wet dust collector is characterized by: including a dust removal chamber, with an installation frame on the top wall of the dust removal chamber, and a fan 1 fixedly mounted on the installation frame by bolts. The air inlet of the fan 1 is connected to the interior of the dust removal chamber, and the air outlet is connected to the air outlet 6, which is installed on the top of the dust removal chamber; a dust extraction pipe 2 is provided on the side wall of the dust removal chamber, with the air outlet of the dust extraction pipe 2 connected to the interior of the dust removal chamber, and a water extraction pipe extending through the dust extraction pipe 2. The other end of the water extraction pipe is connected to a circulating water pump 7, which is placed inside the dust removal chamber.

[0020] A bottom partition 3 is inclinedly arranged at the bottom of the dust removal chamber, an upper partition 5 is inclinedly arranged at the top of the dust removal chamber, and a middle partition 4 is inclinedly arranged between the bottom partition 3 and the upper partition 5 through the side wall of the dust removal chamber.

[0021] Optionally, dust removal liquid is poured into the bottom of the dust removal chamber, and the dust removal liquid submerges the end of the bottom partition 3 by 3mm to 5mm to form a liquid seal.

[0022] In this embodiment, when dust removal is required, the fan 1 is first started. The fan 1 generates a strong suction force, which creates a negative pressure inside the dust removal chamber. Under this strong negative pressure, the dust extraction pipe 2 draws dust-laden air from the outside into the dust collector. After entering the dust removal chamber, the dust-laden air quickly mixes with the dust removal liquid, causing the dust to settle rapidly. The air after dust removal is discharged through the air outlet 6 under the action of the fan 1, thus quickly completing the purification of the dust-laden air.

[0023] After a period of use, some dust will adhere to the inner wall of the dust extraction pipe 2, posing a potential fire hazard. To address this, the circulating water pump 7 is activated, transporting the dust removal liquid through the pumping pipe to the inlet corner of the dust extraction pipe 2. The flow of the dust removal liquid further flushes the inner wall, ensuring thorough mixing of dust and water. The dust is then carried by the airflow into the dust removal chamber, completely removing the accumulated dust and eliminating the fire risk. The continuous operation of the circulating water pump 7 ensures the constant circulation of the dust removal liquid, keeping the pipe moist and effectively preventing dust re-adhesion. This design improves dust removal efficiency, ensures equipment safety, and achieves long-term stable operation.

[0024] Optionally, the water level of the dust removal liquid in the dust removal chamber is lower than the air outlet of the dust extraction pipe 2.

[0025] Optionally, the bottom partition 3 is installed at a position higher than the air outlet of the dust extraction pipe 2 within the dust removal chamber.

[0026] In this embodiment, during the initial process, the dust removal liquid submerges the end of the bottom partition 3 by 3mm to 5mm, forming a liquid seal. The negative pressure generated during the operation of the fan 1 causes surface fluctuations in the internal dust removal liquid. These fluctuations promote more thorough mixing of the dust removal liquid and dust, enhancing the settling effect. Simultaneously, the surface fluctuations transfer the negative pressure inside the dust removal chamber to the dust extraction pipe 2, ensuring stable negative pressure within the pipe and preventing dust backflow. The liquid seal design effectively isolates outside air, preventing dust overflow and further improving the dust removal effect. The intermittent start-up of the circulating water pump 7 saves energy and ensures continuous moisture on the inner wall of the pipe, preventing dust accumulation and ensuring long-term efficient system operation.

[0027] Optionally, an oblique airflow channel is formed between the bottom partition 3 and the middle partition 4, and a reverse airflow channel is formed between the middle partition 4 and the upper partition 5.

[0028] In this embodiment, the liquid is partially splashed due to the undulation of the liquid surface. The oblique airflow channel effectively guides the splashed liquid back down, while the reverse airflow channel between the middle baffle 4 and the upper baffle 5 increases the contact area with the air after dust removal, thereby guiding the water vapor carried by the air above to condense further. Finally, the condensed water droplets fall with the baffles to the bottom of the dust removal chamber, forming a circulating water system to ensure the continuous renewal of the dust removal liquid and further improve the dust removal effect. This design cleverly utilizes the interaction between airflow and liquid to achieve a perfect combination of efficient dust removal and safe operation. The synergistic effect of the oblique airflow channel and the reverse airflow channel not only improves the water vapor condensation efficiency but also avoids dust adhesion inside the equipment caused by liquid splashing, ensuring the stability and durability of the dust removal system.

[0029] Optionally, an air extraction hood is provided at the air inlet of the dust extraction pipe 2. The air extraction hood has a conical structure, which can effectively cover the dust source area and enhance the dust extraction effect.

[0030] Optionally, a nozzle 8 is provided near the air inlet of the dust extraction pipe 2. The nozzle 8 is connected to the water extraction pipe and forms a certain angle with the dust extraction pipe 2. The sprayed dust removal liquid and the airflow form a vortex, which enhances the scouring effect on the wall of the dust extraction pipe and effectively prevents dust adhesion. The angle of the nozzle 8 is designed to be 30°-45° to ensure maximum liquid coverage area and further improve dust removal efficiency.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be primarily defined by the scope of the claims.

Claims

1. An explosion-proof wet dust collector characterized by: The device includes a dust removal chamber, on which a mounting frame is provided on the top wall. A fan (1) is fixed on the mounting frame by bolts. The air inlet of the fan (1) is connected to the inside of the dust removal chamber, and the exhaust end is connected to the air outlet (6). The air outlet (6) is installed on the top of the dust removal chamber. A dust extraction pipe (2) is provided on the side wall of the dust removal chamber. The air outlet of the dust extraction pipe (2) is connected to the inside of the dust removal chamber. A water extraction pipe is also provided through the dust extraction pipe (2). The other end of the water extraction pipe is connected to a circulating water pump (7). The circulating water pump (7) is placed inside the dust removal chamber. A bottom partition (3) is inclinedly arranged at the bottom of the dust removal chamber, an upper partition (5) is inclinedly arranged at the top of the dust removal chamber, and a middle partition (4) is inclinedly arranged between the bottom partition (3) and the upper partition (5) through the side wall of the dust removal chamber.

2. A wet dust collector according to claim 1, wherein: Dust removal liquid is poured into the bottom of the dust removal chamber, and the dust removal liquid submerges the end of the bottom partition (3) by 3mm to 5mm to form a liquid seal.

3. A wet dust collector according to claim 2, wherein: The level of the dust removal liquid in the dust removal chamber is lower than the air outlet of the dust extraction pipe (2).

4. A wet dust collector according to claim 2, wherein: The bottom partition (3) is installed in the dust removal chamber at a position higher than the air outlet of the dust extraction pipe (2).

5. A wet dust collector according to claim 1, wherein: An oblique airflow channel is formed between the bottom partition (3) and the middle partition (4), and a reverse airflow channel is formed between the middle partition (4) and the upper partition (5).

6. The explosion-proof wet dust collector according to claim 1, characterized in that: An air extraction hood is provided at the air inlet of the dust extraction pipe (2), and the air extraction hood has a conical structure.

7. A wet dust collector according to claim 1, wherein: A nozzle (8) is provided near the air inlet of the dust extraction pipe (2), and the nozzle (8) is connected to the water extraction pipe.

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