Water mist dust remover and water mist dust removal method

Abstract

The invention relates to a water mist dust remover and a water mist dust removal method and relates to the technical field of dust removal device.The dust remover comprises a dust remover body, the dust remover body comprises a spraying box, a dust inlet is formed in the upper end of the spraying box, a first water spraying assembly is arranged in the spraying box, and the dust remover body comprises a settling pond used for collecting dust; the dust remover body further comprises a separation box, a second water spraying assembly is arranged in the separation box, an air inlet is formed in the lower end of the separation box and communicated with the lower end of the spraying box, an exhaust port is formed in the upper end of the separation box, and the sedimentation tank is located below the separation box and the spraying box. The lower end part of the separation box is communicated with the sedimentation tank. In the dust removal process, only water is needed for dust removal, and the dust remover body is simple in structure, high in dust removal efficiency and easy to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of dust removal equipment, and in particular to a water mist dust collector and a water mist dust removal method. Background Art

[0002] Cyclone separation dryers are usually used to dry a variety of materials, including but not limited to minerals, chemical raw materials, food raw materials, etc. These materials will release moisture and volatile substances during the drying process, and may also produce some solid particles or smoke. People will connect a dust collector to the smoke outlet to deal with the smoke.

[0003] At present, the smoke generated by the cyclone separation dryer is usually treated by a pulse dust collector, but the pulse dust collector usually consumes a high amount of electricity for cleaning and dust removal, which is costly; and the structure of the pulse dust collector is relatively complex, and the maintenance cost is also high. Summary of the invention

[0004] In order to solve the above problems, the present application provides a water mist dust collector and a water mist dust removal method.

[0005] In the first aspect, the present application provides a water mist dust collector, which adopts the following technical solution: A water mist dust collector comprises a dust collector body, wherein the dust collector body comprises a spray box, a dust inlet is provided at the upper end of the spray box, a water spray assembly 1 is arranged inside the spray box, the dust collector body comprises a sedimentation tank for collecting dust, the bottom of the spray box is connected to the sedimentation tank, the dust collector body also comprises a separation box, a water spray assembly 2 is arranged inside the separation box, an air inlet is provided at the lower end of the separation box, the air inlet is connected to the lower end of the spray box, an exhaust port is provided at the upper end of the separation box, the sedimentation tank is located below the separation box and the spray box, and the lower end of the separation box is connected to the sedimentation tank.

[0006] By adopting the above technical scheme, before dust removal, firstly open the water spray component 1 and the water spray component 2, then pass the smoke and dust gas from the dust inlet into the spray box, spray water mist through the water spray component 1, the water mist collides with the smoke and dust gas inside the spray box, increases the weight of the dust particles in the gas, the dust particles and water fall to the lower end of the spray box due to gravity, and finally flow to the inside of the sedimentation tank to precipitate the dust particles; the remaining part of the smoke and dust gas enters the separation box from the air inlet, the water spray component 2 sprays water, the water mist collides with the smoke and dust inside the separation box, increases the gas The weight of the dust particles in the tank is determined by the weight of the dust particles, and the gas is sprayed twice. The dust particles and water fall to the lower end of the separation box due to gravity, and finally flow to the inside of the sedimentation tank to precipitate the dust particles. The gas after spraying is discharged from the exhaust port, and the gas and the mixed liquid of water and dust particles are separated in the separation box. The gas does not enter the sedimentation tank, thereby ensuring the efficiency of dust precipitation in the sedimentation tank and reducing the impact of the gas entering the sedimentation tank on the settling speed of the dust particles. In the process of dust removal, only water is needed for dust removal. The dust collector body has a simple structure, high dust removal efficiency and is easy to maintain.

[0007] Optionally, the spray box includes a feed part, a feed portion and a discharge part from top to bottom, a water spray assembly is located in the feed part, a limiting plate is hinged in the spray box, the limiting plate is located in the feed portion, the width of the feed portion is smaller than that of the feed part and the discharge part, the width of the feed part decreases from top to bottom, and the width of the discharge part increases from top to bottom.

[0008] By adopting the above technical scheme, when the smoke gas flows through the material section, since the width of the material section is narrower than that of the feeding section, the flow velocity of the smoke gas when flowing through the material section will become faster. At this time, the water sprayed by the water spray assembly can better collide with the smoke in the gas, thereby improving the sedimentation efficiency of the dust particles, thereby improving the dust removal efficiency. Before the smoke gas is introduced, the rotation angle of the limiting plate can be adjusted, thereby adjusting the opening size of the material section, thereby controlling the flow rate of the smoke gas. The structure is simple and the control is convenient.

[0009] Optionally, two water spray pipes are provided on the spray box, both of which extend to the interior of the spray box, and are respectively located on both sides of the length direction of the spray box. The water spray assembly also includes a plurality of water spray heads, and the plurality of water spray heads are all provided on the water spray pipes, and the plurality of water spray heads are all inclined toward the direction of the material passing portion.

[0010] By adopting the above technical solution, when water is sprayed out through a plurality of water spray heads, the water will collide with the dust particles in the gas, thereby accelerating the sedimentation speed of the dust particles. In the process of spraying, the water may hit the side wall of the feed portion, and the water will collide with the side wall of the feed portion, thereby increasing the splashing range of the water, and the sprayed water can more easily collide and contact with the dust particles, thereby improving the sedimentation efficiency of the dust particles, and then improving the dust removal efficiency.

[0011] Optionally, the upper end of the sedimentation tank is opened, and the sedimentation tank includes a drain pipe and several sewage pipes, the several sewage pipes are evenly spaced on one side of the sedimentation tank in the length direction, the drain pipe is located at one end of the sedimentation tank in the length direction, and a water pump is provided outside the sedimentation tank, the water inlet of the water pump is connected to the drain pipe, the water outlet of the water pump is connected to a circulation pipe, the circulation pipe extends to the upper end of the spray box, and the two water spray pipes are both connected to the circulation pipe.

[0012] By adopting the above technical solution, water and dust particles are separated by using a sedimentation tank, and the dust particles in the sedimentation tank are discharged from a number of sewage pipes. The separated water is pumped out by a water pump, enters the circulation pipe, and then enters the inside of the water spray pipe for dust removal again to achieve water recycling and further save costs.

[0013] Optionally, a horizontal pipe is passed through the separation box, which extends to the outside of the separation box and is connected to the circulation pipe. The water spray assembly 2 includes a plurality of water spray heads 2, which are vertically arranged at equal intervals at the lower end of the horizontal pipe, and the height of the horizontal pipe is higher than the height of the air inlet.

[0014] By adopting the above technical scheme, water is introduced into the horizontal pipe, and the water is sprayed out from a plurality of water spray heads to contact the dust particles in the smoke gas introduced into the separation box, thereby increasing the weight of the dust particles in the gas, and performing a secondary spray wash on the gas. The dust particles and water fall to the lower end of the separation box due to gravity, and finally flow to the inside of the sedimentation tank to precipitate the dust particles, thereby achieving a high dust removal efficiency.

[0015] Optionally, an annular tube is arranged on the inner wall of the separation box, the annular tube is located at the same height as the horizontal tube and is connected to the horizontal tube, the water spray assembly 2 also includes a plurality of water spray heads 3, the water spray heads 3 are arranged at equal intervals at the lower end of the annular tube, and the plurality of water spray heads 3 are all inclined in a direction close to the horizontal tube.

[0016] By adopting the above technical scheme, as water is introduced into the horizontal pipe, the water fills the annular pipe, and water is sprayed out from the second and third water spray heads at the same time, coming into contact with the dust particles in the smoke gas introduced into the separation box, thereby increasing the weight of the dust particles in the gas and performing a secondary spray wash on the gas. The dust particles and water fall to the lower end of the separation box due to gravity and finally flow to the inside of the sedimentation tank to precipitate the dust particles, thereby further improving the dust removal efficiency.

[0017] Optionally, the bottom of the spray box is configured as a discharge part, the discharge part is inclined, and the end of the discharge part close to the sedimentation tank is located at the lowest point. The lower end of the discharge part is connected to a discharge pipe 1, and the discharge pipe 1 is located above the sedimentation tank. The discharge pipe 1 extends to the end of the sedimentation tank away from the drain pipe.

[0018] By adopting the above technical solution, the water and dust particle mixture flowing out of the spray box flows to the lower end of the spray box, flows to the lowest point along the inclination angle of the discharge part, and then is discharged from the discharge pipe to the inside of the sedimentation tank for multi-stage sedimentation, so the dust removal efficiency is relatively high.

[0019] Optionally, the bottom of the separation box is conically set, and the width of the bottom of the separation box gradually decreases from top to bottom. The bottom of the separation box is connected to a discharge pipe 2, which is also located above the sedimentation tank. The discharge pipe 2 extends to one end of the sedimentation tank away from the drain pipe.

[0020] By adopting the above technical solution, the mixed liquid of water and dust particles in the separation box flows to the lower end of the separation box due to gravity, flows to the inside of the discharge pipe 2, and then is discharged from the discharge pipe 2 to the inside of the sedimentation tank for multi-stage sedimentation, and the dust removal efficiency is relatively high.

[0021] In a second aspect, the present application provides a water mist dust removal method.

[0022] A water mist dust removal method comprises the following steps: S1: operate the water spraying assembly 1 and the water spraying assembly 2 to spray water; S2: introduce smoke and dust gas from the dust inlet; S3: The water and dust mixture in the spray box flows from the discharge pipe 1 to the sedimentation tank; the smoke gas enters the separation box from the air inlet, and the water and dust mixture in the separation box flows from the discharge pipe 2 to the sedimentation tank; S4: The dust particles are precipitated in the sedimentation tank and then discharged to the outside of the sedimentation tank. The water pump is turned on, and the water in the sedimentation tank is pumped into the circulation pipe. The water enters the horizontal pipe, the ring pipe and the two spray pipes again. S5: Repeat steps S1 to S4.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the gas is sprayed twice, the dust particles and water fall to the lower end of the separation box due to gravity, and finally flow into the sedimentation tank to precipitate the dust particles; the gas after spraying is discharged from the exhaust port, and the gas is separated from the mixed liquid of water and dust particles in the separation box, and the gas does not enter the sedimentation tank, thereby ensuring the efficiency of dust particle precipitation in the sedimentation tank and reducing the influence of gas entering the sedimentation tank on the settling speed of dust particles.

[0024] 2. Before dust removal, first open both the water spray component 1 and the water spray component 2, then pass the smoke and dust gas from the dust inlet into the spray box, spray water mist through the water spray component 1, the water mist collides with the smoke and dust gas inside the spray box, increases the weight of the dust particles in the gas, the dust particles and water fall to the lower end of the spray box due to gravity, and finally flow to the inside of the sedimentation tank to precipitate the dust particles; the remaining smoke and dust gas enters the separation box from the air inlet, the water spray component 2 sprays water, the water mist collides with the smoke and dust inside the separation box, increases the weight of the dust particles in the gas, and performs secondary spray washing on the gas, the dust particles and water fall to the lower end of the separation box due to gravity, and finally flow to the inside of the sedimentation tank to precipitate the dust particles; the gas after spraying is discharged from the exhaust port, and only water is needed for dust removal during the dust removal process. The dust collector body has a simple structure, high dust removal efficiency, and is easy to maintain; 3. When the smoke and dust gas flows through the material part, the flow speed of the smoke and dust gas will become faster because the width of the material part is narrower than that of the feeding part. At this time, the water spraying component can better collide with the smoke and dust in the gas, thereby improving the sedimentation efficiency of the dust particles and the dust removal efficiency. Before the smoke and dust gas is introduced, the rotation angle of the limiting plate can be adjusted to adjust the opening size of the material part, thereby controlling the flow rate of the smoke and dust gas. The structure is simple and the control is convenient. 4. Use a sedimentation tank to separate water from dust particles. The dust particles in the sedimentation tank are discharged from several sewage pipes. The separated water is pumped out by a water pump, enters the circulation pipe, and then enters the inside of the water spray pipe for dust removal again to achieve water recycling and further save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the water mist dust collector.

[0026] Figure 2 It is a schematic diagram showing the circulation pipe in the water mist dust collector.

[0027] Figure 3 It is a cross-sectional schematic diagram of the spray box in the water mist dust collector.

[0028] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0029] Figure 5 yes Figure 3 Schematic diagram of the enlarged portion B.

[0030] Figure 6 It is a cross-sectional schematic diagram of the separation box in the water mist dust collector.

[0031] Explanation of the reference numerals: 1. Dust collector body; 2. Spray box; 21. Dust inlet; 22. Feeding section; 221. Water spray pipe; 222. Water spray head one; 23. Feeding section; 231. Restriction plate; 232. Restriction rod; 233. Hand wheel; 24. Feeding section; 25. Discharge section; 26. Discharge pipe one; 3. Sedimentation tank; 31. Drain pipe; 32. Drain pipe; 33. Water pump; 34. Circulation pipe; 4. Separation box; 41. Air inlet; 42. Exhaust port; 43. Horizontal pipe; 431. Water spray head two; 44. Annular pipe; 441. Water spray head three; 45. Discharge pipe two. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiments of the present application disclose a water mist dust collector.

[0034] Reference Figure 1 and Figure 2 The water mist dust collector comprises a dust collector body 1, which comprises a spray box 2. A dust inlet 21 is provided at the upper end of the spray box 2. A water spray component 1 is arranged inside the spray box 2. The dust collector body 1 comprises a sedimentation tank 3 for collecting dust. The bottom of the spray box 2 is connected to the sedimentation tank 3. The dust collector body 1 also comprises a separation box 4. A water spray component 2 is arranged inside the separation box 4. Before dust removal, both the water spray component 1 and the water spray component 2 are opened, and then the smoke gas is passed into the spray box 2 from the dust inlet 21. Water mist is sprayed through the water spray component 1. The water mist collides with the smoke gas inside the spray box 2 to increase the weight of the dust particles in the gas. The dust particles and water fall to the lower end of the spray box 2 due to gravity, and finally flow to the inside of the sedimentation tank 3 to precipitate the dust particles.

[0035] Reference Figure 3An air inlet 41 is provided at the lower end of the separation box 4, and the air inlet 41 is communicated with the lower end of the spray box 2. An exhaust port 42 is provided at the upper end of the separation box 4. The sedimentation tank 3 is located below the separation box 4 and the spray box 2, and the lower end of the separation box 4 is communicated with the sedimentation tank 3. The remaining part of the smoke gas enters the interior of the separation box 4 from the air inlet 41, and the water spray component 2 sprays water. The water mist collides with the smoke inside the separation box 4, increases the weight of the dust particles in the gas, and performs secondary washing on the gas. The dust particles and water fall to the bottom of the separation box 4 due to gravity. The end portion finally flows into the interior of the sedimentation tank 3 to precipitate the dust particles; the gas after spraying is discharged from the exhaust port 42, and the gas and the mixed liquid of water and dust particles are separated in the separation box 4, and the gas does not enter the sedimentation tank 3, thereby ensuring the efficiency of dust particle precipitation in the sedimentation tank 3 and reducing the influence of the gas entering the sedimentation tank 3 on the settling speed of the dust particles; in the process of dust removal, only water is needed for dust removal, the dust collector body 1 has a simple structure, high dust removal efficiency and is easy to maintain.

[0036] Reference Figure 3 and Figure 4 The spray box 2 includes a feed part 22, a feed part 23 and a discharge part 24 from top to bottom. The water spray assembly is located in the feed part 22. A limiting plate 231 is hinged in the spray box 2. The limiting plate 231 is located in the feed part 23. The width of the feed part 23 is smaller than that of the feed part 22 and the discharge part 24. The width of the feed part 22 decreases from top to bottom, and the width of the discharge part 24 increases from top to bottom.

[0037] Reference Figure 3 and Figure 5 A limiting rod 232 is threadedly connected to the feeding portion 23 for adjusting the rotation amplitude of the limiting plate 231. The limiting rod 232 is located at the lower end of the limiting plate 231. The end of the limiting rod 232 away from the handwheel 233 abuts against the lower end of the limiting plate 231. The limiting rod 232 extends to the outside of the feeding portion 23. The end of the limiting rod 232 located outside the feeding portion 23 is fixedly connected with the handwheel 233. The limiting rod 232 is a threaded rod. Before dust removal, the handwheel 233 is first rotated to drive the limiting rod 232 to move, thereby adjusting the opening size of the feeding portion 23, thereby controlling the flow rate of the subsequent smoke gas.

[0038] Reference Figure 3 and Figure 4 Two water spray pipes 221 are arranged on the spray box 2, and the two water spray pipes 221 extend to the interior of the spray box 2. The two water spray pipes 221 are respectively located on both sides of the length direction of the spray box 2. The water spray assembly also includes a plurality of water spray heads 222, and the plurality of water spray heads 222 are arranged on the water spray pipes 221. The plurality of water spray heads 222 are inclined toward the direction of the material passing portion 23.

[0039] Reference Figure 3 and Figure 6 A horizontal pipe 43 is provided in the separation box 4, and the water spray assembly 2 includes a plurality of water spray heads 431, and the plurality of water spray heads 431 are vertically arranged at the lower end of the horizontal pipe 43 at equal intervals; water is introduced into the horizontal pipe 43 and the two water spray pipes 221, and then the plurality of water spray heads 1 222 and the water spray heads 2 431 are operated to be opened; then the smoke gas can be introduced from the dust inlet 21.

[0040] Reference Figure 4 and Figure 5 The water sprayed by the two water spray heads 222 will collide with the dust particles in the gas, thereby accelerating the sedimentation speed of the dust particles. In the process of spraying, the water may hit the side wall of the overfeed portion 23, and the water will collide with the side wall of the overfeed portion 23, thereby increasing the splashing range of the water, so that the sprayed water can collide and contact with the dust particles more easily. The water mist and the dust particles are combined to increase the weight of the dust particles, and then the dust particles and the water mist fall downward, thereby improving the sedimentation efficiency of the dust particles, thereby improving the dust removal efficiency; when the smoke and dust gas flows through the feed portion 23, since the width of the overfeed portion 23 is narrower than that of the feed portion 22, the flow speed of the smoke and dust gas when flowing through the feed portion 23 will become faster. At this time, the water sprayed by the water spray component can better collide with the smoke and dust in the gas, thereby improving the sedimentation efficiency of the dust particles, and further improving the dust removal efficiency.

[0041] Reference Figure 3 and Figure 6 , the gas introduced into the dust inlet 21 flows from the air inlet 41 to the inside of the separation box 4, the height of the horizontal pipe 43 is higher than the height of the air inlet 41, and an annular pipe 44 is arranged on the inner wall of the separation box 4, the annular pipe 44 and the horizontal pipe 43 are located at the same height and are connected to the horizontal pipe 43, the water spray component two also includes a plurality of water spray heads three 441, the water spray heads three 441 are arranged at equal intervals at the lower end of the annular pipe 44, and the plurality of water spray heads three 441 are inclined in the direction close to the horizontal pipe 43; by introducing water into the horizontal pipe 43, the water fills the annular pipe 44, and water is sprayed out from the water spray heads two 431 and the water spray heads three 441 at the same time, and contacts with the dust particles in the smoke gas introduced into the separation box 4, thereby increasing the weight of the dust particles in the gas, and performing secondary spraying on the gas, and the dust particles and water fall to the lower end of the separation box 4 due to gravity; the gas after the secondary spraying is discharged from the exhaust port 42 above.

[0042] Reference Figure 1 and Figure 2The upper end of the sedimentation tank 3 is open, and the sedimentation tank 3 includes a drain pipe 31 and a plurality of sewage pipes 32. The plurality of sewage pipes 32 are evenly spaced on one side of the sedimentation tank 3 in the length direction, and the drain pipe 31 is located at one end of the sedimentation tank 3 in the length direction; the bottom of the spray box 2 is arranged as a discharge part 25, and the discharge part 25 is inclined. The end of the discharge part 25 close to the sedimentation tank 3 is located at the lowest point, and the water mist and dust particles fall to the lower end of the spray box 2 due to gravity; the lower end of the discharge part 25 is connected with a discharge pipe 26, and the discharge pipe 26 is located above the sedimentation tank 3. The discharge pipe 26 extends to the end of the sedimentation tank 3 away from the drain pipe 31. The mixed liquid of water and dust particles flows to the lowest point along the inclination angle of the discharge part 25, and then is discharged from the discharge pipe 26 to the inside of the sedimentation tank 3.

[0043] Reference Figure 1 and Figure 2 The bottom of the separation box 4 is conical, and the width of the bottom of the separation box 4 gradually decreases from top to bottom. The bottom of the separation box 4 is connected to a discharge pipe 2 45, and the discharge pipe 2 45 is also located above the sedimentation tank 3. The discharge pipe 2 45 extends to the end of the sedimentation tank 3 away from the drain pipe 31; the mixed liquid of dust particles and water in the separation box 4 falls to the bottom of the separation box 4 due to gravity, flows to the lower end of the separation box 4, flows to the inside of the discharge pipe 2 45, and then is discharged from the discharge pipe 2 45 to the inside of the sedimentation tank 3.

[0044] Reference Figure 1 and Figure 2 The sedimentation tank 3 is used to separate water and dust particles, and the dust particles in the sedimentation tank 3 are discharged from a plurality of sewage pipes 32; a water pump 33 is provided outside the sedimentation tank 3, and the water inlet of the water pump 33 is connected to the drainage pipe 31; the separated water is discharged to the outside of the sedimentation tank 3 under the action of the water pump 33.

[0045] Among them, the sedimentation tank 3 is a four-stage sedimentation tank 3, which is a prior art and can separate dust and water, and will not be described in detail in this embodiment.

[0046] Reference Figure 1 and Figure 2 The water outlet of the water pump 33 is connected to the circulation pipe 34, the circulation pipe 34 extends to the upper end of the spray box 2, the two water spray pipes 221 are connected to the circulation pipe 34, one end of the horizontal pipe 43 in the length direction extends to the outside of the separation box 4 and is connected to the circulation pipe 34, the separated water is pumped out by the water pump 33, enters the circulation pipe 34, and then enters the interior of the water spray pipe 221, the horizontal pipe 43 and the annular pipe 44, and the water can be reused to remove dust from the subsequent smoke gas to realize the recycling of water and further save costs.

[0047] The working principle of the water mist dust collector of the embodiment of the present application is as follows: before dust removal, first adjust the rotation angle of the limiting plate 231, then operate the water spray head 1 222, the water spray head 2 431 and the water spray head 3 441 to be opened at the same time, and the smoke gas is introduced from the dust inlet 21. The water mist sprayed by the water spray head 1 222 collides with the dust particles in the gas, thereby accelerating the settling speed of the dust particles. In the process of spraying, the water may hit the side wall of the material transfer portion 23, and the water collides with the side wall of the material transfer portion 23, thereby accelerating the settling speed of the dust particles. Increasing the splashing range of water can make the sprayed water collide and contact with dust particles more easily, thereby improving the sedimentation efficiency of dust particles. The smoke and dust gas enters the interior of the separation box 4 from the air inlet 41, and the water mist sprayed from the second water spray head 431 and the third water spray head 441 collides with the smoke and dust inside the separation box 4, increasing the weight of the dust particles in the gas, and performing a secondary spraying on the gas. The clean gas after the secondary spraying is discharged from the exhaust port 42; the water and dust mixture in the spray box 2 flows to the spray box 4 The lower end of the shower box 2 flows to the lowest point along the inclination angle of the discharge part 25, and then is discharged from the discharge pipe 1 26 to the interior of the sedimentation tank 3 for multi-stage sedimentation; the water and dust particle mixture located in the separation box 4 flows to the lower end of the separation box 4 due to gravity factors, flows to the interior of the discharge pipe 2 45, and then is discharged from the discharge pipe 2 45 to the interior of the sedimentation tank 3 for multi-stage sedimentation; the water and dust particle mixture located in the separation box 4 flows to the lower end of the separation box 4 due to gravity factors, flows to the interior of the discharge pipe 2 45, and then is discharged from the discharge pipe 2 45 to the interior of the sedimentation tank 3 for multi-stage sedimentation; the sedimentation tank 3 is used to separate water and dust particles, and the dust particles located in the sedimentation tank 3 are discharged from a number of sewage pipes 32, and the separated water is pumped out by the water pump 33, and after entering the circulation pipe 34, it enters the interior of the water spray pipe 221, the horizontal pipe 43 and the ring pipe 44, and the water can be reused to remove dust from subsequent smoke gas again to achieve water recycling and further save costs.

[0048] In a second aspect, an embodiment of the present application discloses a water mist dust removal method.

[0049] A water mist dust removal method comprises the following steps: S1: operate the water spraying assembly 1 and the water spraying assembly 2 to spray water; S2: introducing smoke and dust gas from the dust inlet 21; S3: The water and dust mixture in the spray box 2 flows from the discharge pipe 1 26 to the sedimentation tank 3; the smoke gas enters the separation box 4 from the air inlet 41, and the water and dust mixture in the separation box 4 flows from the discharge pipe 2 45 to the sedimentation tank 3; S4: The sedimentation tank 3 precipitates the dust particles and then discharges them to the outside of the sedimentation tank 3. The water pump 33 is turned on, and the water in the sedimentation tank 3 is pumped into the circulation pipe 34. S5: Repeat steps S1 to S4.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water mist dust collector, comprising a dust collector body (1), characterized in that: The dust collector body (1) comprises a spray box (2), the upper end of the spray box (2) is provided with a dust inlet (21), a water spray assembly (1) is arranged inside the spray box (2), the dust collector body (1) comprises a sedimentation tank (3) for collecting dust, the bottom of the spray box (2) is connected to the sedimentation tank (3), the dust collector body (1) also comprises a separation box (4), a water spray assembly (2) is arranged inside the separation box (4), an air inlet (41) is arranged at the lower end of the separation box (4), the air inlet (41) is connected to the lower end of the spray box (2), an air outlet (42) is arranged at the upper end of the separation box (4), the sedimentation tank (3) is located below the separation box (4) and the spray box (2), and the lower end of the separation box (4) is connected to the sedimentation tank (3).

2. The water mist dust collector according to claim 1, characterized in that: The spray box (2) comprises, from top to bottom, a feed portion (22), a feed portion (23) and a discharge portion (24); a water spray assembly is located in the feed portion (22); a limiting plate (231) is hingedly connected in the spray box (2); the limiting plate (231) is located in the feed portion (23); the width of the feed portion (23) is smaller than that of the feed portion (22) and the discharge portion (24); the width of the feed portion (22) decreases from top to bottom; and the width of the discharge portion (24) increases from top to bottom.

3. The water mist dust collector according to claim 2, characterized in that: The spray box (2) is provided with two water spray pipes (221), both of which extend into the interior of the spray box (2), and are respectively located on both sides of the spray box (2) in the length direction. The water spray assembly (2) further comprises a plurality of water spray heads (222), and the plurality of water spray heads (222) are all arranged on the water spray pipes (221), and the plurality of water spray heads (222) are all arranged to be inclined in the direction of the material passing portion (23).

4. The water mist dust collector according to claim 3, characterized in that: The upper end of the sedimentation tank (3) is open, and the sedimentation tank (3) comprises a drainage pipe (31) and a plurality of sewage pipes (32). The plurality of sewage pipes (32) are arranged at equal intervals on one side of the sedimentation tank (3) in the length direction. The drainage pipe (31) is located at one end of the sedimentation tank (3) in the length direction. A water pump (33) is arranged outside the sedimentation tank (3). The water inlet of the water pump (33) is connected to the drainage pipe (31). The water outlet of the water pump (33) is connected to a circulation pipe (34). The circulation pipe (34) extends to the upper end of the spray box (2). The two water spray pipes (221) are both connected to the circulation pipe (34).

5. The water mist dust collector according to claim 4, characterized in that: A horizontal pipe (43) is provided inside the separation box (4), and the horizontal pipe (43) extends to the outside of the separation box (4) and is connected to the circulation pipe (34). The second water spray assembly includes a plurality of second water spray heads (431), and the plurality of second water spray heads (431) are vertically arranged at equal intervals at the lower end of the horizontal pipe (43), and the height of the horizontal pipe (43) is higher than the height of the air inlet (41).

6. The water mist dust collector according to claim 5, characterized in that: An annular tube (44) is arranged on the inner wall of the separation box (4), the annular tube (44) and the horizontal tube (43) are located at the same height and are connected to the horizontal tube (43), and the second water spray assembly also includes a plurality of three water spray heads (441), the three water spray heads (441) are arranged at equal intervals at the lower end of the annular tube (44), and the plurality of three water spray heads (441) are all arranged in an inclined direction close to the horizontal tube (43).

7. The water mist dust collector according to claim 6, characterized in that: The bottom of the spray box (2) is provided with a discharge portion (25), the discharge portion (25) is arranged obliquely, one end of the discharge portion (25) close to the sedimentation tank (3) is located at the lowest point, the lower end of the discharge portion (25) is connected with a discharge pipe 1 (26), the discharge pipe 1 (26) is located above the sedimentation tank (3), and the discharge pipe 1 (26) extends to one end of the sedimentation tank (3) away from the drain pipe (31).

8. The water mist dust collector according to claim 7, characterized in that: The bottom of the separation box (4) is conical, and the width of the bottom of the separation box (4) gradually decreases from top to bottom. The bottom of the separation box (4) is connected to a second discharge pipe (45), and the second discharge pipe (45) is also located above the sedimentation tank (3). The second discharge pipe (45) extends to an end of the sedimentation tank (3) away from the drain pipe (31).

9. A water mist dust removal method, characterized in that: Dust removal using the water mist dust collector according to claim 8 comprises the following steps: S1: operate the water spraying assembly 1 and the water spraying assembly 2 to spray water; S2: introducing smoke and dust gas from the dust inlet (21); S3: the mixed liquid of water and dust particles in the spray box (2) flows from the discharge pipe 1 (26) to the sedimentation tank (3); the smoke gas enters the separation box (4) from the air inlet (41), and the mixed liquid of water and dust particles in the separation box (4) flows from the discharge pipe 2 (45) to the sedimentation tank (3); S4: The dust particles are precipitated in the sedimentation tank (3) and then discharged to the outside of the sedimentation tank (3). The water pump (33) is turned on, and the water in the sedimentation tank (3) is pumped into the circulation pipe (34). The water then enters the horizontal pipe (43), the ring pipe (44) and the two water spray pipes (221). S5: Repeat steps S1 to S4.

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