Feed production waste gas purification equipment and method

Abstract

The invention discloses feed production waste gas purification equipment and a feed production waste gas purification method. The equipment comprises a purification tank body, a cleaning assembly and a filtering assembly, a waste gas treatment section and a waste liquid treatment section are arranged on the purification tank body, a gas inlet pipe is arranged on the outer wall, close to the waste liquid treatment section, of the waste gas treatment section, and a gas outlet pipe is arranged at the top, away from the gas inlet pipe, of the waste gas treatment section; when the conical filter cloth adsorbs excessive impurities, the conical filter cloth slides upwards under the action of waste gas, so that a connecting plate drives a connecting ring, a baffle on the connecting ring and a sliding ring fixedly connected with the baffle to integrally slide upwards, the baffle is separated from an atomizing nozzle, and the atomizing nozzle discharges water to clean the conical filter cloth; the filtering and purifying effects of the conical filter cloth are ensured, the situation that the purifying efficiency is reduced due to blockage is prevented, manpower is saved, the cost of frequently replacing the filter plate is reduced, and meanwhile the purifying and filtering effects of waste gas are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of feed production, and in particular to a feed production waste gas purification device and method. Background Art

[0002] In the process of feed production, the crushing, mixing, granulation and other processes of raw materials will generate a large amount of waste gas, which mainly contains pollutants such as dust, harmful gases and volatile organic compounds. If it is directly discharged into the atmosphere, it will not only cause serious pollution to the environment, but also harm the health of people nearby. Therefore, it is particularly important to purify the waste gas from feed production.

[0003] However, in the current technology, the purification equipment needs to frequently replace the combined purification parts to ensure the effect of exhaust gas purification, which leads to a large waste of human resources. At the same time, since the combined purification parts need to be frequently replaced as consumables, this also increases the material cost, thereby affecting the normal production and purification of exhaust gas. The filtering efficiency, therefore, is proposed to purify the exhaust gas of feed production. Summary of the invention

[0004] The purpose of the present invention is to provide a feed production waste gas purification device and method to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides a feed production waste gas purification device, including a purification tank body, a cleaning component and a filtering component; the purification tank body is provided with a waste gas treatment section and a waste liquid treatment section, the waste gas treatment section is provided with an air inlet pipe on the outer wall near the waste liquid treatment section, the waste gas treatment section is provided with an air outlet pipe at the top away from the air inlet pipe, the waste liquid treatment section is provided with a liquid inlet pipe on the outer wall near the waste gas treatment section, and the waste liquid treatment section is provided with a liquid outlet pipe at the bottom; the cleaning component includes a cleaning pipe, a movable ring and a limiting cross bar; a water flow channel is provided in the cleaning pipe, and a water inlet section and a water spray section are sequentially provided on the cleaning pipe, the water inlet section passes through the top center of the purification tank body and is fixedly connected to the purification tank body, The center of the limiting cross bar is fixedly connected to the bottom of the cleaning pipe, the movable ring is arranged in the water inlet section and is slidably connected to the inner wall of the water inlet section, a water pipe is fixedly connected to the movable ring, and a plurality of atomizing nozzles are arranged near the bottom of the water spraying section; the filtering assembly comprises a connecting ring, a sliding ring, a plurality of baffles, a plurality of connecting plates and a conical filter cloth, the inner walls of the connecting ring and the sliding ring are both slidably connected to the outer surface of the water spraying section, one end of the baffle is fixed to the connecting ring, the other end of the baffle is fixed to the sliding ring, the baffle corresponds to the atomizing nozzle, one end of the connecting plate is evenly fixed on one side of the connecting ring adjacent to the baffle, and the other end of the connecting plate is fixedly connected to the large mouth end of the conical filter cloth.

[0006] Furthermore, it also includes a mounting bracket, which includes a plurality of fixing columns and a fixing ring, the inner wall of the fixing ring is fixedly sleeved on the outer surface of the purification tank body, and the side of the fixing ring adjacent to the purification tank body is fixedly mounted on one end of the plurality of fixing columns.

[0007] Furthermore, the atomizing nozzle is located in the concave area of ​​the conical filter cloth.

[0008] Furthermore, the waste liquid treatment section is funnel-shaped, and a V-shaped slope is provided on its inner wall, and valves are provided on both the liquid inlet pipe and the liquid outlet pipe.

[0009] Furthermore, the adjacent connecting plates all form a fan-shaped flow area.

[0010] Furthermore, a limiting ring is fixedly sleeved on the water spray section of the cleaning pipe near the water inlet section.

[0011] Furthermore, the small-mouth end of the conical filter cloth is provided with a bottom ring which is slidably sleeved with the water spraying section.

[0012] The present invention also provides a method for purifying waste gas from feed production, the method comprising the following steps:

[0013] S1. Send the dusty waste gas from the feed factory into the purification tank through the air inlet pipe;

[0014] S2. When the dusty waste gas from the feed factory passes through the conical filter cloth, the impurities will be blocked at the bottom periphery of the conical filter cloth, and the filtered gas will be discharged from the outlet pipe;

[0015] S3. When there are too many impurities accumulated at the filter holes of the conical filter cloth and the exhaust gas cannot pass through the conical filter cloth, the conical filter cloth slides upward under the action of the exhaust gas until the baffle no longer blocks the atomizing nozzle. Water flows from the water pipe into the water spray section through the water inlet section of the cleaning pipe, and finally sprays out from the atomizing nozzle opened on the water spray section until the impurities at the filter holes of the conical filter cloth are cleaned up. When the exhaust gas can pass through the conical filter cloth, the conical filter cloth will slide down, and the baffle will block the atomizing nozzle again.

[0016] S4. When the inner wall of the purification tank needs to be cleaned, the valve on the liquid inlet pipe is opened to introduce external water to flush the inner wall of the purification tank. After flushing, the valve on the liquid outlet pipe is opened to discharge the flushed waste water to achieve the cleaning of the inner wall of the purification tank.

[0017] Beneficial effects:

[0018] The conical filter cloth of the present invention has no or a small amount of impurities, and the exhaust gas can be filtered through the conical filter cloth, and the bottom ring at the lower end of the conical filter cloth contacts the upper surface of the limiting cross bar. At this time, the baffle blocks the atomizing nozzle, and the water flow cannot be sprayed out through the atomizing nozzle, thereby avoiding water waste. When the conical filter cloth absorbs impurities and the impurities are too much, the conical filter cloth will slide upward under the action of the exhaust gas, so that the connecting plate drives the connecting ring and the baffle on the connecting ring and the sliding ring fixedly connected to the baffle to slide upward as a whole, thereby releasing the restriction of the baffle on the atomizing nozzle, and the baffle is separated from the atomizing nozzle, which is convenient for the atomizing nozzle to discharge water, and the water flow cleans the conical filter cloth through the atomizing nozzle until the impurities at the filter hole position of the conical filter cloth are cleaned up, thereby ensuring the filtering and purification effect of the conical filter cloth, preventing clogging and reducing the purification efficiency, saving the steps of taking out and replacing the filter plate of the exhaust gas, and being more convenient and quick to operate, which not only saves manpower but also reduces the cost of frequent replacement of the filter plate, while ensuring the purification and filtering effect of the exhaust gas.

[0019] 2. The present invention effectively increases the contact area between the conical filter cloth and the toxic gas by setting the conical filter cloth into a cone shape, and can effectively filter and purify the toxic gas generated in the feed production process, so that the discharged gas meets the requirements. The atomizing nozzle is located in the concave area of ​​the conical filter cloth, which can ensure that the flushing water flow can directly act on the surface of the conical filter cloth and the concave part below it, ensuring that all parts of the conical filter cloth can be fully flushed to prevent local blockage or decreased filtration efficiency due to inadequate flushing. The design of the atomizing nozzle allows the water flow to be sprayed in the form of mist. This atomizing flushing method can cover the surface of the conical filter cloth more evenly and improve the flushing effect. At the same time, the mist water flow can more effectively penetrate into the fiber gaps of the conical filter cloth to remove trapped impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions implemented in the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the feed production waste gas purification equipment of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the internal cleaning component of the exhaust gas purification equipment of the present invention;

[0023] Figure 3 A cross-sectional view of a cleaning tube according to the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter assembly of the present invention;

[0025] In the figure:

[0026] Purification tank 10; waste gas treatment section 10a; waste liquid treatment section 10b; air inlet pipe 11; air outlet pipe 12; liquid inlet pipe 13; liquid outlet pipe 14; cleaning assembly 20; cleaning pipe 21; water inlet section 21a; water spray section 21b; atomizing nozzle 21c; movable ring 22; limiting cross bar 23; limiting ring 24; filter assembly 30; connecting ring 31; sliding ring 32; baffle 33; connecting plate 34; conical filter cloth 35; bottom ring 35a; mounting bracket 40; fixing column 41; fixing ring 42. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 4 As shown, a feed production waste gas purification device provided by the present invention includes a purification tank body 10, a cleaning component 20 and a filtering component 30; a waste gas treatment section 10a and a waste liquid treatment section 10b are arranged on the purification tank body 10, an air inlet pipe 11 is arranged on the outer wall of the waste gas treatment section 10a near the waste liquid treatment section 10b, an air outlet pipe 12 is arranged on the top of the waste gas treatment section 10a away from the air inlet pipe 11, a liquid inlet pipe 13 is arranged on the outer wall of the waste liquid treatment section 10b near the waste gas treatment section 10a, a liquid outlet pipe 14 is arranged at the bottom of the waste liquid treatment section 10b, and the waste liquid treatment section 10b is a leak The waste liquid treatment section 10b is bucket-shaped, and a V-shaped slope is arranged on its inner wall. By setting the V-shaped slope, the waste liquid can be guided to flow more smoothly inside the waste liquid treatment section 10b. Due to the inclination angle of the slope, the waste liquid will flow rapidly along the slope to the liquid outlet pipe 14 of the waste liquid treatment section 10b under the action of gravity, thereby reducing the retention time of the waste liquid in the bucket, thereby improving the efficiency of waste liquid treatment. The V-shaped slope inside the waste liquid treatment section 10b also helps to balance the distribution of the waste liquid in the bucket, reduce the center of gravity shift caused by the accumulation of waste liquid, thereby improving the overall stability of the equipment. The liquid inlet pipe 13 and the liquid outlet pipe 14 are both provided with valves.

[0029] like Figure 2 and Figure 3As shown, the cleaning assembly 20 includes a cleaning pipe 21, a movable ring 22 and a limiting cross bar 23; a water flow channel is arranged in the cleaning pipe 21, and a water inlet section 21a and a water spraying section 21b are arranged on the cleaning pipe 21 in sequence, the water inlet section 21a passes through the top center of the purification tank body 10 and is fixedly connected to the purification tank body 10, the center of the limiting cross bar 23 is fixedly connected to the bottom of the cleaning pipe 21, and the setting of the limiting cross bar 23 can prevent the filter assembly 30 from falling off downward, the movable ring 22 is arranged in the water inlet section 21a and is slidably connected to the inner wall of the water inlet section 21a, a water pipe is fixedly connected to the movable ring 22, a plurality of atomizing nozzles 21c are arranged near the bottom of the water spraying section 21b, and a limiting ring 24 is fixedly sleeved on the water spraying section 21b of the cleaning pipe 21 near the water inlet section 21a, and the limiting ring 24 is arranged to prevent the filter assembly 30 from colliding with the top inner wall of the purification tank body 10 when moving upward, causing damage to the filter assembly 30 and affecting the exhaust gas filtration.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, the filter assembly 30 includes a connecting ring 31, a sliding ring 32, a plurality of baffles 33, a plurality of connecting plates 34 and a conical filter cloth 35. The inner walls of the connecting ring 31 and the sliding ring 32 are slidably sleeved with the outer surface of the water spray section 21b. One end of the baffle 33 is fixed on the connecting ring 31, and the other end of the baffle 33 is fixed on the sliding ring 32. The baffle 33 corresponds to the atomizing nozzle 21c, and the baffle 33 effectively blocks the atomizing nozzle 21c to avoid waste of water resources. One end of the connecting plate 34 is evenly fixed on the side adjacent to the connecting ring 31 and the baffle 33, and the other end of the connecting plate 34 is fixedly connected to the large mouth end of the conical filter cloth 35. The small mouth end of the conical filter cloth 35 is provided with a bottom ring 35a slidably sleeved with the water spray section 21b. By setting the conical filter cloth 35 to be conical, the contact area between the conical filter cloth 35 and the toxic gas is effectively increased, so that the toxic gas generated in the feed production process can be effectively filtered out. The filter element 35 is filtered and purified so that the discharged gas meets the requirements. The atomizing nozzle 21c is located in the concave area of ​​the conical filter cloth 35, which can ensure that the flushing water flow can directly act on the surface of the conical filter cloth 35 and the concave part below it, ensuring that all parts of the conical filter cloth 35 can be fully flushed to prevent local blockage or decreased filtration efficiency due to inadequate flushing. The design of the atomizing nozzle 21c allows the water flow to be sprayed in the form of mist. This atomizing flushing method can cover the surface of the conical filter cloth 35 more evenly and improve the flushing effect. At the same time, the mist water flow can more effectively penetrate into the fiber gaps of the conical filter cloth 35 to remove trapped impurities. Adjacent connecting plates 34 form fan-shaped flow areas. The fan-shaped flow area can make the exhaust gas contact with the conical filter cloth 35 more fully when passing through the purification equipment, which helps to more effectively adsorb harmful substances in the exhaust gas, thereby improving the purification effect and facilitating better discharge of the exhaust gas after filtration.

[0031] When the present invention is in use, the dusty waste gas generated in the feed production process is sent into the purification tank body 10 through the air inlet pipe 11. During the rising process, the waste gas is filtered through the conical filter cloth 35. The clean gas filtered by the conical filter cloth 35 is discharged from the air outlet pipe 12 at the top of the purification tank body 10, so as to achieve the purpose of purifying the waste gas. When there is no or a small amount of impurities in the conical filter cloth 35, the waste gas can be filtered through the conical filter cloth 35, and the bottom ring 35a at the lower end of the conical filter cloth 35 contacts the upper surface of the limiting cross bar 23. At this time, the baffle plate 33 blocks the atomizing nozzle 21c, and the water flow cannot be sprayed out through the atomizing nozzle 21c, so as to avoid water waste. When the conical filter cloth 35 adsorbs impurities and there are too many impurities, the conical filter cloth 35 will slide upward under the action of the waste gas, so that the connecting plate 3 The connecting ring 31, the baffle plate 33 on the connecting ring 31, and the sliding ring 32 fixedly connected to the baffle plate 33 are driven to slide upward as a whole, and the restriction of the baffle plate 33 on the atomizing nozzle 21c is released. The baffle plate 33 is separated from the atomizing nozzle 21c, which is convenient for the atomizing nozzle 21c to discharge water. The water flows through the atomizing nozzle 21c to clean the conical filter cloth 35 until the impurities at the filter holes of the conical filter cloth 35 are cleaned up, thereby ensuring the filtering and purification effect of the conical filter cloth 35 and preventing blockage and reducing the purification efficiency. After the impurities at the filter holes of the conical filter cloth 35 are cleaned up, the overall gravity of the filter assembly 30 is greater than the force of the exhaust gas, so that the filter assembly 30 slides downward as a whole until the baffle plate 33 blocks the atomizing nozzle 21c again, and then the exhaust gas is filtered and purified again.

[0032] Through the cooperation between the cleaning component 20 and the filtering component 30, the purification tank body 10 can effectively clean the conical filter cloth 35 according to the actual filtering situation of the conical filter cloth 35 when filtering and purifying the exhaust gas, so that the conical filter cloth 35 can maintain an effective filtering and purification effect, and keep the conical filter cloth 35 clean and tidy, saving the steps of removing and replacing the filter plate of the exhaust gas, and the operation is more convenient and quick, which not only saves manpower but also reduces the cost of frequent replacement of the filter plate, while ensuring the purification and filtering effect of the exhaust gas.

[0033] The present invention is also provided with a waste liquid treatment section 10b, which can effectively discharge the waste water generated when cleaning the conical filter cloth 35 in time to avoid the accumulation of waste water. Clean water is injected into the purification tank body 10 through the liquid inlet pipe 13, and the impurities washed off the conical filter cloth 35 are washed into the waste liquid treatment section 10b, thereby ensuring a clean environment inside the purification tank body 10. After the waste liquid generated after washing falls into the waste liquid treatment section 10b, it quickly flows to the liquid outlet pipe 14 through the V-shaped slope inside the waste liquid treatment section 10b. The valve on the liquid outlet pipe 14 is opened to discharge the waste liquid, thereby ensuring the cleanliness of the inside of the purification tank 10 and improving the effect of waste gas purification.

[0034] like Figure 1As shown, the exhaust gas purification equipment also includes a mounting bracket 40, which includes a plurality of fixing columns 41 and a fixing ring 42. The inner wall of the fixing ring 42 is fixedly sleeved on the outer surface of the purification tank body 10, and the side of the fixing ring 42 adjacent to the purification tank body 10 is fixedly mounted on one end of the plurality of fixing columns 41 to facilitate the fixation of the purification tank body 10.

[0035] The method of using the exhaust gas purification equipment in this scheme includes the following steps:

[0036] S1, sending the dust exhaust gas from the feed factory into the purification tank 10 through the air inlet pipe 11;

[0037] S2. When the dust exhaust gas from the feed factory passes through the conical filter cloth 35, the impurities will be blocked at the bottom periphery of the conical filter cloth 35, and the filtered gas will be discharged from the outlet pipe 12;

[0038] S3, when too many impurities are accumulated at the filter holes of the conical filter cloth 35 and the exhaust gas cannot pass through the conical filter cloth 35, the conical filter cloth 35 slides upward under the action of the exhaust gas until the baffle 33 no longer blocks the atomizing nozzle 21c, and water flows from the water pipe through the water inlet section 21a of the cleaning pipe 21 into the water spray section 21b, and finally sprays out from the atomizing nozzle 21c opened on the water spray section 21b until the impurities at the filter holes of the conical filter cloth 35 are cleaned up. When the exhaust gas can pass through the conical filter cloth 35, the conical filter cloth 35 will slide down, and the baffle 33 will block the atomizing nozzle 21c again;

[0039] S4. When the inner wall of the purification tank body 10 needs to be cleaned, the valve on the liquid inlet pipe 13 is opened to introduce external water to flush the inner wall of the purification tank body 10. After flushing, the valve on the liquid outlet pipe 14 is opened to discharge the flushed waste water, thereby achieving the cleaning of the inner wall of the purification tank body 10.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A feed production waste gas purification device, characterized in that: The invention comprises a purification tank body (10), a cleaning component (20) and a filtering component (30); the purification tank body (10) is provided with a waste gas treatment section (10a) and a waste liquid treatment section (10b); an air inlet pipe (11) is provided on the outer wall of the waste gas treatment section (10a) close to the waste liquid treatment section (10b); an air outlet pipe (12) is provided on the top of the waste gas treatment section (10a) away from the air inlet pipe (11); a liquid inlet pipe (13) is provided on the outer wall of the waste liquid treatment section (10b) close to the waste gas treatment section (10a); and a liquid outlet pipe (14) is provided at the bottom of the waste liquid treatment section (10b); The cleaning assembly (20) comprises a cleaning pipe (21), a movable ring (22) and a limiting cross bar (23); a water flow channel is arranged in the cleaning pipe (21); a water inlet section (21a) and a water spray section (21b) are arranged in sequence on the cleaning pipe (21); the water inlet section (21a) passes through the top center of the purification tank body (10) and is fixedly connected to the purification tank body (10); the center of the limiting cross bar (23) is fixedly connected to the bottom of the cleaning pipe (21); the movable ring (22) is arranged in the water inlet section (21a) and is slidably connected to the inner wall of the water inlet section (21a); ​​a water pipe is fixedly connected to the movable ring (22); and a plurality of atomizing nozzles (21c) are arranged near the bottom of the water spray section (21b); The filter assembly (30) comprises a connecting ring (31), a sliding ring (32), a plurality of baffles (33), a plurality of connecting plates (34) and a conical filter cloth (35); the inner walls of the connecting ring (31) and the sliding ring (32) are both slidably sleeved with the outer surface of the water spray section (21b); one end of the baffle (33) is fixed to the connecting ring (31); the other end of the baffle (33) is fixed to the sliding ring (32); the baffle (33) corresponds to the atomizing nozzle (21c); one end of the connecting plate (34) is evenly fixed on a side of the connecting ring (31) adjacent to the baffle (33); the other end of the connecting plate (34) is fixedly connected to the large-mouth end of the conical filter cloth (35).

2. The exhaust gas purification device according to claim 1, characterized in that: The invention also comprises a mounting bracket (40), wherein the mounting bracket (40) comprises a plurality of fixing columns (41) and a fixing ring (42), wherein the inner wall of the fixing ring (42) is fixedly sleeved on the outer surface of the purification tank body (10), and the fixing ring (42) is fixedly mounted on one end of the plurality of fixing columns (41) on one side adjacent to the purification tank body (10).

3. The exhaust gas purification device according to claim 1, characterized in that: The atomizing nozzle (21c) is located in the concave area of ​​the conical filter cloth (35).

4. The exhaust gas purification device according to claim 1, characterized in that: The waste liquid treatment section (10b) is funnel-shaped, and its inner wall is provided with a V-shaped slope. Both the liquid inlet pipe (13) and the liquid outlet pipe (14) are provided with valves.

5. The exhaust gas purification device according to claim 1, characterized in that: The adjacent connecting plates (34) each form a fan-shaped flow area.

6. The exhaust gas purification device according to claim 1, characterized in that: A limit ring (24) is fixedly sleeved on the water spray section (21b) of the cleaning pipe (21) near the water inlet section (21a).

7. The exhaust gas purification device according to claim 1, characterized in that: The small opening end of the conical filter cloth (35) is provided with a bottom ring (35a) which is slidably sleeved with the water spraying section (21b).

8. A method for purifying waste gas from feed production, characterized in that: The exhaust gas purification device according to any one of claims 1 to 7 comprises the following steps: S1, sending the dusty waste gas from the feed factory into the purification tank (10) through the air inlet pipe (11); S2. When the dusty waste gas from the feed factory passes through the conical filter cloth (35), the impurities are blocked at the bottom periphery of the conical filter cloth (35), and the filtered gas is discharged from the outlet pipe (12); S3. When too many impurities are accumulated at the filter holes of the conical filter cloth (35) and the exhaust gas cannot pass through the conical filter cloth (35), the conical filter cloth (35) slides upward under the action of the exhaust gas until the baffle (33) no longer blocks the atomizing nozzle (21c), and water flows from the water pipe into the water spraying section (21b) through the water inlet section (21a) of the cleaning pipe (21), and finally is sprayed out by the atomizing nozzle (21c) provided on the water spraying section (21b) until the impurities at the filter holes of the conical filter cloth (35) are cleaned up. When the exhaust gas can pass through the conical filter cloth (35), the conical filter cloth (35) slides down, and the baffle (33) blocks the atomizing nozzle (21c) again; S4. When it is necessary to clean the inner wall of the purification tank body (10), the valve on the liquid inlet pipe (13) is opened to introduce an external water source to flush the inner wall of the purification tank body (10). After the flushing is completed, the valve on the liquid outlet pipe (14) is opened to discharge the waste water after flushing, thereby achieving the cleaning of the inner wall of the purification tank body (10).

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