Wet dust collector

Abstract

The invention discloses a wet dust collector, and belongs to the technical field of dust collectors, the wet dust collector comprises a box body, an air inlet is fixed on the outer wall of the box body, a fixed box is arranged on the inner wall of the box body, and air outlet pipes are fixed at the bottom of the fixed box at equal intervals; the dust falling mechanism is arranged in the box body, the dust falling mechanism makes contact with dust in a water curtain generation mode to achieve dust falling, a waste liquid recycling mechanism is arranged at the bottom of the box body, an automatic liquid supplementing mechanism is further arranged in the box body, and the automatic liquid supplementing mechanism is used for supplementing a small amount of clean water; therefore, water taken away during evaporation or sludge removal is supplemented. According to the wet dust collector, after dust in airflow is intercepted, liquid containing the dust can be separated from clear water in the device, the situation that the clear water is turbid due to mud to affect follow-up dust capture is avoided, and in the dust treatment process, the liquid in the mud can be filtered out in time, and the liquid is recycled.

Description

Technical Field

[0001] This invention relates to the field of dust collector technology, specifically a wet dust collector. Background Technology

[0002] Wet scrubbers utilize centrifugal force to thoroughly mix water and dust-laden gas, then discharge clean air. They are highly effective at handling dust from metal polishing and grinding processes, meeting environmental protection requirements and minimizing the impact of dust on the surrounding environment. They also fundamentally eliminate the safety hazards associated with dry scrubbers, such as combustion and explosion. Because the filter medium is water, there is no need for frequent replacement of filter bags or cartridges, resulting in lower long-term operating and maintenance costs. For example, a safer wet scrubber for explosive dust (approval number CN218339360U) includes: a wet scrubber body, a support frame, and the side walls and bottom of the wet scrubber body. The wet scrubber is fixedly connected to a bracket. A solid-liquid separation assembly is fixedly installed at the bottom of the main body of the wet scrubber. An exhaust pipe assembly is fixedly connected to one side of the main body of the wet scrubber. The solid-liquid separation assembly includes a separation cylinder and a sludge inlet pipe. The sludge inlet pipe is fixedly connected to the bottom of the main body of the wet scrubber, and the separation cylinder is fixedly installed at the bottom of the sludge inlet pipe. A spiral shaft is movably sleeved inside the separation cylinder. This is a safer wet scrubber for explosive dust. By setting up a solid-liquid separation assembly, the wastewater discharged from the main body of the wet scrubber can be separated into solid and liquid components, thereby saving the time spent on sedimentation and filtration of impurities during wastewater treatment, improving work efficiency, enhancing the functionality of the wet scrubber, and making it more practical. For example, the wet scrubber for a student cafeteria food processing workshop, with announcement number CN221491886U, falls under the field of wet scrubbers. This wet scrubber includes a dust collector with a drain outlet at its bottom. A collection seat is located directly below the drain outlet and is fixed to the support legs of the dust collector. A scraping assembly is installed on the collection seat. In this wet scrubber, when the scraping plate moves to the edge of the collection seat and storage seat, most of the water flows back to the collection seat through the drainage trough. The dust and liquid mixture is pushed into the storage seat by the scraping plate for collection, preventing the dust and liquid mixture from being discharged through the drain pipe, which could clog the drain pipe, affect subsequent drainage, and cause the wet scrubber to malfunction. However, the aforementioned wet scrubber still has the following drawbacks in actual use: 1. In traditional wet scrubbers, after removing dust from the airflow, the dust-containing liquid falls directly into the clean water of the equipment. When the dust accumulates, it will cause the clean water to become turbid, and the impeller will adhere to a large amount of mud and dust, affecting the normal operation of the dust collector, resulting in a decrease in capture capacity and airflow, or even failure to work. It is also inconvenient to separate the captured dust from the clean water. 2. In traditional wet dust collectors, dust and sludge are filtered through filter bags in a sludge filtration cart. The dust, sludge, and trace amounts of water remain in the filter bags and are later treated as solid waste. The clean water after filtration flows into the cart box and can then be returned to the dust collector for reuse via a return diaphragm pump. Therefore, the utilization of the recovered liquid is not timely.

[0003] To address the aforementioned issues, there is an urgent need for innovative designs based on existing wet scrubbers. Summary of the Invention

[0004] The purpose of this invention is to provide a wet scrubber to solve the problems mentioned in the background art, such as the inconvenience of separating captured dust from clean water in traditional wet scrubbers and the insufficient timeliness of utilizing the recovered liquid.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wet dust collector, comprising a housing, an air inlet fixed to the outer wall of the housing, a fixing box provided to the inner wall of the housing, and an air outlet pipe fixed at equal intervals at the bottom of the fixing box; It also includes: a dust suppression mechanism, which is installed inside the housing. The dust suppression mechanism achieves dust suppression by generating a water curtain to come into contact with the dust. A waste liquid recovery mechanism is installed at the bottom of the housing, and the waste liquid recovery mechanism recycles the liquid in the sludge. An automatic liquid replenishment mechanism is also installed inside the housing, which is used to replenish a small amount of clean water to replenish the water lost due to evaporation or sludge removal.

[0006] Preferably, the dust suppression mechanism includes a connecting shaft rotatably disposed inside the housing, and an impeller is fixedly disposed on the outer side of the connecting shaft. The edge of the impeller is curved, so that when the airflow blows towards the impeller, it can be driven to rotate, thereby causing the clean water to be lifted.

[0007] Preferably, the inner wall of the housing is fixed with a partition plate, and clean water is stored between the partition plate and the housing. The height of the clean water is located on the central axis of the impeller, and the highest point of the partition plate is higher than the highest point of the impeller. The impeller is partially submerged in the clean water, and a water curtain can be generated when it rotates at high speed.

[0008] Preferably, a baffle is fixed on the inner top surface of the box, and an exhaust port is provided at the corner of the top of the box. The baffle is located between the partition plate and the exhaust port. The baffle extends the gas transmission channel, enabling comprehensive treatment of dust in the gas.

[0009] Preferably, the waste liquid recovery mechanism includes a fixed cylinder fixed to the bottom of the tank, and a discharge hopper is threadedly fitted at the bottom of the fixed cylinder. The inner bottom surface of the discharge hopper is fixedly connected to one end of the fixed rod. The discharge hopper is designed to collect the liquid filtered out of the mud.

[0010] Preferably, the other end of the fixing rod is connected to a filter screen, and the upper surface of the filter screen is in close contact with the bottom of the box. The back of the fixing cylinder is fixedly connected to one end of the return water pipe, and a water pump is installed on the outside of the return water pipe. The water pump is located on the back of the box. When the rotating unloading hopper is separated from the fixing cylinder, the filter screen can release the blockage on the bottom of the box.

[0011] Preferably, the interior of the unloading hopper is connected to the interior of the temporary storage box via a return water pipe, and the temporary storage box is fixed to the top of the box body. The inner bottom surface of the temporary storage box has a "V" shaped structure, and the recovered liquid is temporarily stored in the temporary storage box.

[0012] Preferably, the automatic liquid replenishment mechanism includes a solenoid valve installed on the side of the tank, and the solenoid valve is electrically connected to the press controller. The press controller is installed on the inner top surface of the tank, and the press controller and the inner top surface of the tank are perpendicular to each other. When the press controller is pressed, it can control the solenoid valve to open and add water.

[0013] Preferably, the top surface of the box and the bottom of the temporary storage box are provided with a through groove, and a movable plate is hinged to the inner side of the through groove. The movable plate and the box are elastically rotatably connected, and the rotation range of the movable plate is 0-90°. When the movable plate is pulled, it can rotate, so that the liquid in the temporary storage box can be added into the box.

[0014] Preferably, the edge of the movable plate is fixedly connected to one end of the traction rope, and the other end of the traction rope is provided with a float plate, which is located below the connecting shaft. The float plate can be raised and lowered synchronously according to changes in water level.

[0015] Compared with the prior art, the beneficial effects of the present invention are: after intercepting and treating dust in the airflow, this wet dust collector can separate the dust-containing liquid from the clean water in the device, avoiding the mud from causing turbidity in the clean water and affecting subsequent dust capture. Furthermore, during the dust treatment process, the liquid in the mud can be filtered out in time for recycling. The specific details are as follows: 1. When the impeller is blown, it can drive the connecting shaft to rotate. Since the impeller is partially submerged in clean water, it can generate a water curtain when it rotates at high speed. This allows dust to be permanently captured when it passes through the water curtain, which plays a good role in dust suppression. Separating the mud from the clean water can extend the service life of the clean water and prevent it from becoming turbid frequently, thus affecting the capture of dust. 2. The water pump can transfer the collected liquid to the temporary storage tank through the return water pipe for subsequent recycling. Rotating the unloading hopper separates it from the fixed cylinder and drives the filter screen to separate from the bottom of the tank. This allows the mud in the tank to fall down for easy cleaning. During the dust treatment process, the mud will not fall into the unloading hopper, which facilitates the recycling of wastewater. 3. Changes in the water level inside the tank will cause the float to rise and fall synchronously. When the float descends, it can pull the movable plate to rotate via the traction rope. After the movable plate rotates to the tilted state, the blockage of the passage can be released. In this way, the liquid in the temporary storage tank can fall into the tank through the passage for replenishment, avoiding the low liquid level from affecting the formation of the water curtain. Furthermore, when the liquid in the temporary storage tank is exhausted and no more liquid can be added, the liquid level continues to drop, causing the float to decrease in height. This pulls the movable plate to rotate into a vertical position, presses the pressure controller, and then controls the solenoid valve to open, allowing external liquid to be added to the tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the impeller structure of the present invention; Figure 4 This is a cross-sectional view of the fixed cylinder and unloading hopper of the present invention; Figure 5 This is a schematic diagram of the separation structure of the fixed cylinder and the unloading hopper of the present invention; Figure 6 This is a schematic diagram of the overall side profile of the present invention; Figure 7 This is a schematic diagram of the floating plate structure of the present invention; Figure 8 This is a schematic diagram of the structure of the movable plate after rotation according to the present invention.

[0017] In the diagram: 1. Housing; 2. Air inlet; 3. Fixing box; 4. Air outlet pipe; 5. Solenoid valve; 6. Connecting shaft; 7. Impeller; 8. Divider plate; 9. Baffle plate; 10. Exhaust port; 11. Fixing cylinder; 12. Unloading hopper; 13. Fixing rod; 14. Filter screen; 15. Return water pipe; 16. Water pump; 17. Temporary storage box; 18. Through groove; 19. Movable plate; 20. Traction rope; 21. Float plate; 22. Press controller. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 The present invention provides the following technical solution: Example 1: To address the problems existing in the prior art, this example provides a wet dust collector, comprising a housing 1, an air inlet 2 fixed to the outer wall of the housing 1, and a fixing box 3 provided on the inner wall of the housing 1, with air outlet pipes 4 fixed at equal intervals at the bottom of the fixing box 3; it also includes a dust suppression mechanism, disposed inside the housing 1, which achieves dust suppression by generating a water curtain to contact the dust; a waste liquid recovery mechanism is provided at the bottom of the housing 1, which recycles the liquid in the sludge; and an automatic liquid replenishment mechanism is also provided inside the housing 1, which replenishes a small amount of clean water to compensate for the water lost during evaporation or sludge removal.

[0020] Existing wet scrubbers, after removing dust from the airflow, allow the dust-containing liquid to fall directly into the clean water within the equipment. As dust accumulates, this causes the clean water to become turbid, leading to a large amount of mud and dust adhering to the impeller 7, affecting the normal operation of the dust collector, reducing its capture capacity and airflow, and even rendering it unable to operate. Furthermore, it is inconvenient to separate the captured dust from the clean water. Figures 1-3 As shown, the dust collection mechanism includes a connecting shaft 6 rotatably mounted inside the housing 1, and an impeller 7 is fixedly mounted on the outer side of the connecting shaft 6, with the edge of the impeller 7 being curved; a partition plate 8 is fixed to the inner wall of the housing 1, and clean water is stored between the partition plate 8 and the housing 1, with the height of the clean water located on the central axis of the impeller 7, and the highest point of the partition plate 8 being higher than the highest point of the impeller 7; a baffle 9 is fixed to the inner top surface of the housing 1, and an exhaust port 10 is provided at the corner of the top of the housing 1, with the baffle 9 positioned between the partition plate 8 and the exhaust port 10; firstly, gas containing dust enters the interior of the housing 1 through the air inlet 2, and the gas collects at the position of the fixed box 3. The air is then discharged from different outlet pipes 4 and blown onto the impeller 7. The impeller 7 is blown to drive the connecting shaft 6 to rotate. Since the impeller 7 is partially submerged in clean water, it can generate a water curtain when it rotates at high speed. The dust is permanently captured when it passes through the water curtain, which plays a good role in dust reduction. The liquid containing dust continues to be transported along the channel between the partition plate 8 and the baffle 9. Then the mud falls down the baffle 9 by gravity. The clean gas after the dust is removed is discharged from the exhaust port 10, which achieves the purpose of dust removal. Separating the mud and clean water can extend the service life of the clean water and prevent it from becoming turbid frequently, which would affect the capture of dust.

[0021] Example 2: In existing wet scrubbers, dust and sludge are filtered through filter bags on a sludge filtration cart. The dust, sludge, and trace amounts of water remain in the filter bags for later solid waste disposal. The filtered, clean water flows into the cart's storage compartment and can then be returned to the scrubber via a diaphragm pump. Therefore, the utilization of the recovered liquid is not timely. This example addresses this issue by implementing the following technical solution: Figure 2 and Figures 4-6As shown, the waste liquid recovery mechanism includes a fixed cylinder 11 fixed to the bottom of the tank 1, and a discharge hopper 12 is threadedly fitted onto the bottom of the fixed cylinder 11. The inner bottom surface of the discharge hopper 12 is fixedly connected to one end of a fixed rod 13. The other end of the fixed rod 13 is connected to a filter screen 14, and the upper end surface of the filter screen 14 is in close contact with the bottom of the tank 1. The back of the fixed cylinder 11 is fixedly connected to one end of a return water pipe 15, and a water pump 16 is installed on the outside of the return water pipe 15, and the water pump 16 is located on the back of the tank 1. The interior of the discharge hopper 12 is interconnected with the interior of a temporary storage tank 17 through the return water pipe 15. The temporary storage tank 17 is fixed to the top of the tank 1, and the inner bottom surface of the temporary storage tank 17 has a "V" shaped structure. The treated sludge falls into the tank. At the bottom of box 1, the slurry is filtered by the filter screen 14, so that the dust remains on the filter screen 14, while the liquid in the slurry falls into the discharge hopper 12 for collection. Then, the water pump 16 runs and can transfer the collected liquid through the return water pipe 15 to the temporary storage tank 17 for subsequent recycling. When the slurry needs to be cleaned, the discharge hopper 12 is rotated to separate it from the fixed cylinder 11, and the filter screen 14 is driven to separate from the bottom of the box 1. In this way, the mud in the box 1 can fall down for easy cleaning. During the dust treatment process, the slurry will not fall into the discharge hopper 12, which facilitates the recycling of wastewater. After cleaning is completed, the discharge hopper 12 is rotated to reinstall it with the fixed cylinder 11, and the filter screen 14 is driven to re-seal the bottom of the box 1.

[0022] Example 3: Most existing wet scrubbers rely on solenoid valve 5 to replenish the liquid inside the device, without first adding the recovered liquid into the device. Therefore, this example uses the following technical solution, such as... Figures 7-8As shown, the automatic liquid replenishment mechanism includes a solenoid valve 5 installed on the side of the tank 1, and the solenoid valve 5 is electrically connected to the press controller 22, which is installed on the inner top surface of the tank 1, and the press controller 22 and the inner top surface of the tank 1 are perpendicular to each other; a through groove 18 is opened on the top surface of the tank 1 and the bottom of the temporary storage tank 17, and a movable plate 19 is hinged to the inner side of the through groove 18, and the movable plate 19 and the tank 1 are elastically rotatably connected, and the rotation range of the movable plate 19 is 0-90°; the edge of the movable plate 19 is fixedly connected to one end of the traction rope 20, and a float 21 is provided at the other end of the traction rope 20, and the float 21 is located below the connecting shaft 6; as the water is evaporated or removed during sludge removal, the water volume in the tank 1 will decrease, so when the liquid level drops, the float 21 can be driven to drop synchronously. Since the traction rope 20 between the float 21 and the movable plate 19 is bent in the initial state... Because of its curved shape, the float 21 does not pull the movable plate 19 to rotate when it begins to descend. When the liquid level is below the impeller 7, the float 21 continues to descend and can pull the movable plate 19 to rotate via the traction rope 20. After the movable plate 19 rotates to an inclined state, it can release the blockage of the through channel 18. In this way, the liquid in the temporary storage tank 17 can fall into the tank 1 through the through channel 18 for replenishment, avoiding the low liquid level from affecting the formation of the water curtain. After replenishment, the water level rises, causing the float 21 to rise synchronously. The movable plate 19 automatically rotates back to block the through channel 18. When the liquid in the temporary storage tank 17 is completely added, it can no longer be replenished. At this time, the liquid level continues to drop, causing the float 21 to continuously decrease in height, which can pull the movable plate 19 to rotate into a vertical state. The vertical movable plate 19 can press the press controller 22, thereby controlling the solenoid valve 5 to open, realizing the replenishment of external liquid into the tank 1, avoiding affecting the operation of the equipment.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wet dust collector, comprising a housing (1), wherein an air inlet (2) is fixed on the outer wall of the housing (1), and a fixing box (3) is provided on the inner wall of the housing (1), and an air outlet pipe (4) is fixed at equal intervals at the bottom of the fixing box (3). Its features are, Also includes: A dust suppression mechanism is installed inside the housing (1). The dust suppression mechanism achieves dust suppression by generating a water curtain to come into contact with the dust. A waste liquid recovery mechanism is installed at the bottom of the housing (1). The waste liquid recovery mechanism recycles the liquid in the mud. An automatic liquid replenishment mechanism is also installed inside the housing (1). The automatic liquid replenishment mechanism is used to replenish a small amount of clean water to replenish the water lost due to evaporation or mud removal.

2. A wet dust collector according to claim 1, characterized in that: The dust suppression mechanism includes a connecting shaft (6) rotatably disposed inside the housing (1), and an impeller (7) is fixedly disposed on the outside of the connecting shaft (6), and the edge of the impeller (7) is curved.

3. A wet dust collector according to claim 2, characterized in that: The inner wall of the box (1) is fixed with a partition plate (8), and clean water is stored between the partition plate (8) and the box (1), and the height of the clean water is located on the central axis of the impeller (7), while the highest point of the partition plate (8) is higher than the highest point of the impeller (7).

4. A wet dust collector according to claim 3, characterized in that: The inner top surface of the box (1) is fixed with a baffle (9), and an exhaust port (10) is provided at the corner of the top of the box (1), and the baffle (9) is located between the partition plate (8) and the exhaust port (10).

5. A wet dust collector according to claim 1, characterized in that: The waste liquid recycling mechanism includes a fixed cylinder (11) fixed to the bottom of the box (1), and the bottom of the fixed cylinder (11) is threaded with a discharge hopper (12), and the inner bottom surface of the discharge hopper (12) is fixedly connected to one end of the fixed rod (13).

6. A wet dust collector according to claim 5, characterized in that: The other end of the fixing rod (13) is connected to a filter screen (14), and the upper surface of the filter screen (14) is in contact with the bottom of the box (1). The back of the fixing cylinder (11) is fixedly connected to one end of the return water pipe (15), and a water pump (16) is installed on the outside of the return water pipe (15), and the water pump (16) is located on the back of the box (1).

7. A wet dust collector according to claim 6, characterized in that: The interior of the unloading hopper (12) is connected to the interior of the temporary storage box (17) through the return water pipe (15), and the temporary storage box (17) is fixed to the top of the box body (1), and the inner bottom surface of the temporary storage box (17) is a "V" shaped structure.

8. A wet dust collector according to claim 1, characterized in that: The automatic liquid replenishment mechanism includes a solenoid valve (5) installed on the side of the box (1), and the solenoid valve (5) is electrically connected to the press controller (22), and the press controller (22) is installed on the inner top surface of the box (1), while the press controller (22) and the inner top surface of the box (1) are perpendicular to each other.

9. A wet dust collector according to claim 8, characterized in that: The top surface of the box (1) and the bottom of the temporary storage box (17) are provided with a through groove (18), and a movable plate (19) is hinged to the inner side of the through groove (18). The movable plate (19) and the box (1) are elastically rotatably connected, and the rotation range of the movable plate (19) is 0-90°.

10. A wet dust collector according to claim 9, characterized in that: The edge of the movable plate (19) is fixedly connected to one end of the traction rope (20), and the other end of the traction rope (20) is provided with a float plate (21), and the float plate (21) is located below the connecting shaft (6).

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