Zinc oxide production waste gas filtering equipment and treatment process with purification function

Abstract

The invention relates to the technical field of waste gas treatment, and in particular to a zinc oxide production waste gas filtering device with a purification function and a treatment process. By setting the filter cloth in a bent state, during the waste gas purification process, the bent portion on the filter cloth does not participate in the filtering operation, and during the process of tearing off the filter cloth, the impurities that fall off are intercepted by the bent portion, thereby achieving rapid cleaning of impurities while effectively preventing impurities from falling into a liquid medicine, thereby avoiding many problems caused by the liquid medicine falling into the liquid medicine. A zinc oxide production waste gas filtering device with a purification function comprises a second pipe, a filler block, a filter cloth, a first connecting strip, a round rod, a second connecting strip, a third connecting strip, a circulation component and a bonding component; a second pipe is passed through a base; a filler block is fixedly connected to an outer shell; a bonding component is connected to the filler block; a filter cloth is connected to the bonding component, and the filter cloth is in contact with the filler block; and a first connecting strip is plugged into the outer shell.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and more specifically, to a zinc oxide production waste gas filtering device and treatment process with purification function. Background Art

[0002] A large amount of waste gas is generated during the production and processing of zinc oxide. The waste gas contains a large amount of harmful substances, which will pollute the environment after being discharged into the air.

[0003] Therefore, the existing equipment purifies the waste gas by passing the waste gas through the filler that absorbs the liquid medicine;

[0004] However, there are a small amount of solid particulate impurities in the exhaust gas. After long-term filtration, the particulate impurities will adhere to the lower side of the packing layer, affecting the airflow. During the manual cleaning of the agglomerated dust, the agglomerated impurities can easily fall into the water tank and pollute the liquid medicine in the water tank. Impurities may also enter the packing with the circulating liquid medicine, causing the performance of the packing to deteriorate. Summary of the invention

[0005] In order to overcome the disadvantage that particulate impurities adhere to the lower side of the packing layer during the waste gas purification process of the existing equipment, causing many problems, the present invention provides a zinc oxide production waste gas filtering equipment and a treatment process with purification function.

[0006] The technical solution of the present invention is:

[0007] A zinc oxide production waste gas filtering device with a purification function, comprising a base, an outer shell and a pipe one; the base is fixedly connected to the outer shell; the outer shell is connected to the pipe one; it also includes a pipe two, a stuffing block, a filter cloth, a connecting strip one, a round rod, a connecting strip two, a connecting strip three, a circulation component and an adhesive component; the base is penetrated by the pipe two; the stuffing block is fixedly connected to the outer shell; the stuffing block is connected to the adhesive component; the adhesive component is connected to the filter cloth, and the filter cloth is in contact with the stuffing block; the adhesive component is used to bond the filter cloth to the stuffing block; the outer shell is plugged with a connecting strip one; at least two round rods are fixedly connected to the connecting strip one; all the round rods are fixedly connected to the connecting strip two; the filter cloth is provided with a bending portion; the end of the filter cloth is fixedly connected to the connecting strip two; the filter cloth is fixedly connected to the connecting strip three, and the connecting strip three is in contact with the connecting strip two; the outer shell is connected to the circulation component, and the circulation component is used to transport the medicine solution at the bottom of the outer shell to the stuffing block.

[0008] Preferably, a drain hole is provided on the base.

[0009] Preferably, the circulation component includes a pump body, a pipe rack and a pipe three; the pump body is fixedly connected to the outer shell; the pipe rack is installed on the pump body, and the pipe rack is connected to the outer shell; a plurality of pipes three are arranged on the inner side of the filler block, and a plurality of circular holes are opened on the pipe three; each pipe three is connected to the corresponding pipe rack.

[0010] Preferably, the bonding assembly comprises bonding strips and four connecting strips; at least three bonding strips are fixedly connected to the filter cloth; at least three connecting strips are fixedly connected to the filler block, and the four connecting strips are bonded to the bonding strips.

[0011] As a preference, it further comprises limit strips; a plurality of limit strips are fixedly connected to the filter cloth.

[0012] Preferably, an interception component is also included; the interception component is connected to the shell; the interception component includes a baffle and a side plate; at least two baffles are fixedly connected to the inner side of the shell; at least two side plates are plugged into the shell, and the side plates are in contact with the baffles.

[0013] Preferably, a handle is also included; at least two handles are fixedly connected to each side panel.

[0014] Preferably, a fixing component is also included; a fixing component is connected to connecting strip 2; the fixing component includes connecting strip 5, Velcro 1 and Velcro 2; connecting strip 5 is fixedly connected to connecting strip 2; Velcro 1 is fixedly connected to connecting strip 5; Velcro 2 is fixedly connected to the filter cloth.

[0015] Preferably, the surface of the shell is coated with an anti-corrosion layer.

[0016] A zinc oxide production waste gas treatment process with purification function comprises the following steps:

[0017] Step 1: Adding materials: Add liquid medicine to the lower inner part of the shell, and the liquid level of the liquid medicine is lower than the upper port of the second pipe;

[0018] Step 2: Wetting: start the pump body to allow the liquid medicine in the lower inner part of the shell to flow into the filler block to wet the filler block;

[0019] Step three, ventilation, conveying the exhaust gas to pipeline two through the external exhaust pipe;

[0020] Step 4: Purification: the exhaust gas flows upward through the packing block, and the harmful substances in the exhaust gas are absorbed by the packing block and the liquid medicine inside it. In this process, the solid particulate impurities are intercepted by the filter cloth;

[0021] Step five, cleaning, tear off the filter cloth to quickly remove solid particulate impurities. During this process, the bent part of the filter cloth can intercept the fallen impurities to prevent them from falling into the medicine solution.

[0022] Beneficial effects of the present invention:

[0023] 1. By setting the filter cloth in a bent state, during the exhaust gas purification process, the bent portion of the filter cloth does not participate in the filtering operation. During the process of tearing off the filter cloth, the impurities that fall off are intercepted by the bent portion, which achieves rapid cleaning of impurities and effectively prevents impurities from falling into the liquid medicine, thus avoiding many problems caused by the liquid medicine falling into the liquid medicine. At the same time, the second connecting strip used to pull the filter cloth to move is also used to intercept impurities rolling along the upper side of the bent portion to prevent them from rolling into the liquid medicine. At the same time, when the amount of impurities is too much, the rolling impurities are intercepted by the limit strip in cooperation with the second connecting strip to further prevent impurities from falling into the liquid medicine.

[0024] 2. The impurities falling from the front and rear edges of the filter cloth are intercepted and collected by the baffle to prevent the impurities from falling into the liquid medicine and contaminating the liquid medicine;

[0025] 3. The end of the filter cloth is fixed on the connecting strip 5 by cooperating with the Velcro 1 and the Velcro 2, which effectively avoids the problem of impurities on the bent part falling into the liquid medicine due to shaking caused by sudden loss of tension at the end of the filter cloth.

[0026] The present invention also has the following beneficial effects:

[0027] The shell surface is coated with an anti-corrosion layer to prevent rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The schematic diagram of the structure of the zinc oxide production waste gas filtering device with purification function of the present invention is shown;

[0029] Figure 2 A cross-sectional view of a zinc oxide production waste gas filtering device with a purification function according to the present invention is shown;

[0030] Figure 3 The present invention is shown Figure 2 The enlarged view of point A in the middle;

[0031] Figure 4 The present invention is shown Figure 2 The enlarged view of point B in the middle;

[0032] Figure 5 A schematic diagram of the structure of the interception assembly of the present invention is shown;

[0033] Figure 6 The present invention is shown Figure 5 Enlarged view of point C in the middle;

[0034] Figure 7 A schematic diagram of the structure of the adhesive strip of the present invention is shown;

[0035] Figure 8 A schematic diagram of the round rod structure of the present invention is shown;

[0036] Fig. 9 A schematic diagram of the structure of the fixing assembly of the present invention is shown;

[0037] Fig.10 A front view of a filter cloth according to the invention is shown.

[0038] Explanation of the reference numerals: 1-base, 2-housing, 3-pipeline one, 4-pipeline two, 5-filling block, 6-filter cloth, 7-connecting strip one, 8-round rod, 9-connecting strip two, 10-connecting strip three, 201-pump body, 202-pipe rack, 203-pipeline three, 204-adhesive strip, 205-connecting strip four, 206-limiting strip, 207-baffle, 208-side panel, 209-handle, 2010-connecting strip five, 2011-Velcro one, 2012-Velcro two, 91-bending portion. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Example 1

[0040] A zinc oxide production waste gas filtration device with purification function, such as Figure 1-Figure 10 As shown, it includes a base 1, a shell 2 and a pipe 3; the shell 2 is bolted to the base 1, and the base 1 is set to be made of alloy; the shell 2 is connected and bolted to the pipe 3; it also includes a pipe 2 4, a filler block 5, a filter cloth 6, a connecting strip 1 7, a round rod 8, a connecting strip 2 9, a connecting strip 3 10, a circulation component and an adhesive component; the base 1 is penetrated by a pipe 2 4; the shell 2 is fixedly connected to the filler block 5, the outer side of the filler block 5 is set to be a water-permeable cloth layer, and the inner side of the filler block 5 is filled with a mixture of activated carbon, absorbent cotton and fiber filler. The filler can be separated and limited by regular grid plates so that the mixture filler is arranged in a certain geometric shape; the filler block 5 is connected to an adhesive component; the adhesive component is connected to a filter cloth 6, and the filter cloth 6 is in contact with the filler block 5; a connecting strip 1 7 is inserted into the outer shell 2; two round rods 8 are bolted to the connecting strip 1 7; all the round rods 8 are commonly bolted to a connecting strip 2 9; the filter cloth 6 is provided with a bending portion 91; the end of the filter cloth 6 is fixedly connected to the connecting strip 2 9; a connecting strip 3 10 is fixedly connected to the filter cloth 6, and the connecting strip 3 10 is in contact with the connecting strip 2 9; the outer shell 2 is connected to a circulation component.

[0041] The base 1 is provided with a drain hole for draining sewage.

[0042] The circulation component includes a pump body 201, a pipe rack 202 and a pipe three 203; the pump body 201 is bolted to the outer shell 2; the pipe rack 202 is installed on the pump body 201, the pipe rack 202 is connected to and fixedly connected with the outer shell 2, and the pipe rack 202 is set to a metal material; five pipes three 203 are arranged on the inner side of the filling block 5, and a plurality of circular holes are opened on the pipe three 203; each pipe three 203 is connected and plugged with the corresponding pipe rack 202, and the pump body 201 is started, so that the liquid medicine at the lower inner side of the outer shell 2 flows through the pipe rack 202 to the pipe three 203, and then flows into the filling block 5 through the circular holes on the pipe three 203.

[0043] The bonding assembly includes bonding strips 204 and four connecting strips 205; three bonding strips 204 are fixedly connected to the filter cloth 6; three connecting strips four 205 are fixedly connected to the filler block 5, and the connecting strips four 205 are bonded to the bonding strips 204 to bond the filter cloth 6 to the filler block 5.

[0044] It also includes limit strips 206; six limit strips 206 are fixedly connected to the filter cloth 6, and the limit strips 206 are used to intercept impurities rolling along the surface of the filter cloth 6.

[0045] The working principle of the above embodiment is as follows:

[0046] The lower inner part of the shell 2 is filled with liquid medicine, and the liquid level of the liquid medicine is lower than the upper end of the pipe 2 4. The external exhaust pipe is manually connected to the lower end of the pipe 2 4, and the pump body 201 is started to make the liquid medicine in the lower inner part of the shell 2 flow into the pipe 3 203 through the pipe rack 202, and then flow into the inside of the filler block 5 through the circular hole on the pipe 3 203 to moisten the filler block 5. Excess liquid medicine will flow out from the inside of the filler block 5 and drip back to the lower inner part of the shell 2 to keep the filler block 5 moistened. Then the external exhaust pipe transports the waste gas generated in the production and processing of zinc oxide to the pipe 2 4, and the waste gas flows into the inner side of the shell 2 through the pipe 2 4, and then flows upward through the filler block 5, and is finally discharged from the pipe 1 3. In this process, harmful substances in the waste gas are absorbed by the filler block 5 and the liquid medicine, thereby achieving the purpose of filtering and purifying the waste gas.

[0047] When the liquid medicine wets the packing block 5, the filter cloth 6 is also wetted. When the exhaust gas flows upward through the packing block 5 and the filter cloth 6, the solid particulate impurities in the exhaust gas are intercepted by the filter cloth 6. The particulate impurities adhere to the lower side surface of the wet filter cloth 6 outside the bending portion 91. During regular maintenance, the connecting strip 1 7 is manually pulled to move to the right, and the connecting strip 1 7 drives the round rod 8 to move to the right, and the round rod 8 drives the connecting strip 2 9 to move to the right, so that the connecting strip 2 9 drives the left end of the filter cloth 6 to move to the right, until the filter cloth 6 moves to the position as shown in the figure. Fig.10In the state shown, the bent portion 91 is in a taut state, and the connecting strip 7 is manually pulled to the right to apply a pulling force to the left end of the adhesive strip 204, so that the left end of the adhesive strip 204 is gradually torn off from the connecting strip 205, that is, the filter cloth 6 is gradually torn off from left to right. During this process, the bent portion 91 gradually becomes longer, and the left end of the bent portion 91 is the position where the filter cloth 6 is torn off. At this position, the agglomerated impurities will fall off after being squeezed, and the fallen impurities will be received on the upper side of the bent portion 91 and will not fall into the liquid medicine at the lower inner side of the shell 2. At the same time, Fig.10 As shown, after the bending portion 91 is straightened, its upper side surface is inclined, and impurities falling to the upper side of the bending portion 91 will roll along the inclined surface. At this time, the rolling impurities are intercepted by the connecting strip 2 9 to prevent the impurities from rolling into the medicine solution at the lower inner side of the shell 2.

[0048] During the tearing process of the filter cloth 6, if too many impurities fall off, some of the impurities will pass over the connecting strip 29 and fall into the liquid medicine at the lower inner side of the shell 2. Therefore, in the initial stage of tearing off the filter cloth 6, the inclination state of the bent portion 91 is at a maximum value. At this time, the six limit strips 206 cooperate to intercept the impurities rolling obliquely downward along the bent portion 91. As the tearing distance of the filter cloth 6 becomes longer, the bent portion 91 gradually becomes longer and the inclination decreases. At this time, the impurities can no longer roll a long distance on the bent portion 91, thereby effectively avoiding the problem of excessive impurities passing over the connecting strip 29, and further preventing impurities from falling into the liquid medicine at the lower inner side of the shell 2.

[0049] According to the above working principle, we know that the present invention has the following effects:

[0050] When in use, by setting the filter cloth 6 to a bent state, during the exhaust gas purification process, the bent portion 91 on the filter cloth 6 does not participate in the filtering operation, and during the process of tearing off the filter cloth 6, the fallen impurities are intercepted by the bent portion 91, thereby achieving rapid cleaning of impurities and effectively preventing impurities from falling into the liquid medicine, thus avoiding many problems caused by the liquid medicine falling into the liquid medicine. At the same time, the connecting strip 209 used to pull the filter cloth 6 to move is also used to intercept impurities rolling along the upper side of the bent portion 91 to prevent them from rolling into the liquid medicine. At the same time, when the amount of impurities is too much, the rolling impurities are intercepted by the limiting strip 206 in cooperation with the connecting strip 209 to further prevent impurities from falling into the liquid medicine. Example 2

[0051] On the basis of Example 1, Figure 5As shown, it also includes an interception component; the interception component is connected to the outer shell 2; the interception component includes a baffle 207 and a side plate 208; two baffles 207 are welded on the inner side of the outer shell 2, and the impurities sliding down from the front and rear sides of the filter cloth 6 are intercepted by the baffle 207; two side plates 208 are plugged into the outer shell 2, and the side plates 208 are in contact with the baffle 207, and the side plates 208 can be set to an alloy material.

[0052] A handle 209 is also included; two handles 209 are bolted to each side panel 208, making it easier to open the side panel 208 manually.

[0053] The working principle of the above embodiment is as follows:

[0054] In the process of tearing off the filter cloth 6 described in Example 1:

[0055] Some impurities will fall from the gap between the front and rear edges of the filter cloth 6 and the outer shell 2. At this time, the falling impurities are intercepted by the baffle 207 to prevent the impurities from falling into the liquid medicine. During regular maintenance, the handle 209 is manually gripped to open the side panel 208, and then the impurities collected on the baffle 207 are removed.

[0056] According to the above working principle, we know that the present invention has the following effects:

[0057] The impurities falling from the front and rear edges of the filter cloth 6 are intercepted and collected by the baffle 207 to prevent the impurities from falling into the liquid medicine and contaminating the liquid medicine. Example 3

[0058] On the basis of Example 2, Figure 4 , Figure 8 ,and Fig. 9 As shown, it also includes a fixing component; a fixing component is connected to the connecting strip 2 9; the fixing component includes a connecting strip 5 2010, a Velcro 1 2011 and a Velcro 2 2012; the connecting strip 5 2010 is welded on the connecting strip 2 9; the connecting strip 5 2010 is fixedly connected to the Velcro 1 2011; the filter cloth 6 is fixedly connected to the Velcro 2 2012.

[0059] The surface of the housing 2 is coated with an anti-corrosion layer.

[0060] The working principle of the above embodiment is as follows:

[0061] In the process of tearing off the filter cloth 6 described in Example 1:

[0062] In the final stage of tearing off the filter cloth 6, the adhesive strip 204 completely detaches from the connecting strip four 205 and loses its adhesive force, so that the end of the filter cloth 6 close to the Velcro two 2012 suddenly loses its pulling force and shakes greatly, which can easily shake the impurities on the bent portion 91 into the liquid medicine. Therefore, in the final stage of tearing off the filter cloth 6, the side panel 208 is manually opened to prepare for replacing the new filter cloth 6. At this time, the Velcro one 2011 is located directly below the Velcro two 2012, and then the right end of the filter cloth 6 is manually torn off from the stuffing block 5, and the Velcro two 2012 is glued to the Velcro one 2011, so that the end of the filter cloth 6 is fixed to the connecting strip The filter cloth 6 and the connecting strip 7 and the parts thereon are manually driven to continue to move to the right, thereby taking the filter cloth 6 and the connecting strip 7 and the parts thereon out of the housing 2, effectively avoiding the problem that the impurities on the bent portion 91 are shaken into the liquid medicine due to the sudden loss of tension at the end of the filter cloth 6. Then, the old filter cloth 6 is manually torn off from the connecting strips 2 9 and the connecting strip 5 2010, and then the new filter cloth 6 is manually bonded to the lower side of the packing block 5, and then the connecting strip 7 and the parts thereon are installed back in place, and then the left end of the new filter cloth 6 is fixed to the connecting strip 2 9, and then the side plate 208 is installed back in place to complete the replacement operation.

[0063] A zinc oxide production waste gas treatment process with purification function comprises the following steps:

[0064] Step 1: Adding materials: Add liquid medicine to the lower inner part of the shell 2, and the liquid level of the liquid medicine is lower than the upper end of the pipe 2 4;

[0065] Step 2: Wetting: start the pump body 201 to allow the liquid medicine in the lower inner part of the housing 2 to flow into the filler block 5 to wet the filler block 5;

[0066] Step three, ventilation, conveying the exhaust gas to the pipeline 2 4 through the external exhaust pipe;

[0067] Step 4: purification, the exhaust gas flows upward through the packing block 5, and the harmful substances in the exhaust gas are absorbed by the packing block 5 and the liquid medicine inside it. In this process, the solid particulate impurities are intercepted by the filter cloth 6;

[0068] Step five, cleaning, tear off the filter cloth 6 to quickly remove the solid particulate impurities. During this process, the bent portion 91 of the filter cloth 6 can intercept the fallen impurities to prevent the impurities from falling into the liquid medicine.

[0069] According to the above working principle, we know that the present invention has the following effects:

[0070] By cooperating with Velcro 1 2011 and Velcro 2 2012, the end of the filter cloth 6 is fixed on the connecting strip 5 2010, which effectively avoids the problem of impurities on the bent portion 91 being shaken into the medicine due to sudden loss of tension at the end of the filter cloth 6.

[0071] On the basis of the above technical effects, the present invention also has the following advantages:

[0072] The surface of the housing 2 is coated with an anti-corrosion layer to prevent rust.

[0073] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A zinc oxide production waste gas filtering device with purification function, comprising a base (1); a housing (2) fixedly connected to the base (1); a pipe (3) connected to the housing (2); characterized in that: A second pipe (4) is passed through the base (1); a packing block (5) is fixedly connected to the outer shell (2); a bonding assembly is connected to the packing block (5); a filter cloth (6) is connected to the bonding assembly, and the filter cloth (6) is in contact with the packing block (5); the bonding assembly is used to bond the filter cloth (6) to the packing block (5); a connecting strip (7) is plugged into the outer shell (2); at least two round rods (8) are fixedly connected to the connecting strip (7); a connecting strip (9) is fixedly connected to all the round rods (8); a bending portion (91) is provided on the filter cloth (6); an end of the filter cloth (6) is fixedly connected to the connecting strip (9); a connecting strip (10) is fixedly connected to the filter cloth (6), and the connecting strip (10) is in contact with the connecting strip (9); a circulation assembly is connected to the outer shell (2), and the circulation assembly is used to transport the medicine liquid at the bottom of the outer shell (2) to the packing block (5); The circulation component comprises a pump body (201); the pump body (201) is fixedly connected to the outer shell (2); a pipe rack (202) is installed on the pump body (201), and the pipe rack (202) is connected to the outer shell (2); a plurality of pipes (203) are arranged on the inner side of the packing block (5), and a plurality of circular holes are opened on the pipes (203); each pipe (203) is connected to the corresponding pipe rack (202); The bonding assembly comprises bonding strips (204); at least three bonding strips (204) are fixedly connected to the filter cloth (6); at least three connecting strips four (205) are fixedly connected to the filler block (5), and the connecting strips four (205) are bonded to the bonding strips (204); It also includes a limiting strip (206); a plurality of limiting strips (206) are fixedly connected to the filter cloth (6); The filter cloth (6) is provided with a bent portion (91), the bent portion (91) not participating in the filtering operation, the second connecting strip (9) is connected to the end of the filter cloth (6) provided with the bent portion (91), the second connecting strip (9) drives the bent portion (91) to move and tear off the filter cloth (6), and at the same time the bent portion (91) intercepts impurities that fall off.

2. The zinc oxide production waste gas filtering equipment with purification function according to claim 1 is characterized in that: A drainage hole is provided on the base (1).

3. The zinc oxide production waste gas filtering equipment with purification function according to claim 1 is characterized in that: It also includes an interception component; the interception component is connected to the outer shell (2); the interception component includes a baffle (207); at least two baffles (207) are fixedly connected to the inner side of the outer shell (2); at least two side plates (208) are plugged into the outer shell (2), and the side plates (208) are in contact with the baffles (207).

4. The zinc oxide production waste gas filtering equipment with purification function according to claim 3 is characterized in that: It also includes a handle (209); at least two handles (209) are fixedly connected to each side plate (208).

5. The zinc oxide production waste gas filtering equipment with purification function according to claim 4 is characterized in that: It also includes a fixing component; the fixing component is connected to the second connecting strip (9); the fixing component includes the fifth connecting strip (2010); the fifth connecting strip (2010) is fixedly connected to the second connecting strip (9); the first Velcro strip (2011) is fixedly connected to the fifth connecting strip (2010); and the second Velcro strip (2012) is fixedly connected to the filter cloth (6).

6. A zinc oxide production waste gas filtration device with purification function according to any one of claims 1 to 5, characterized in that: The surface of the housing (2) is coated with an anti-corrosion layer.

7. A zinc oxide production waste gas treatment process with purification function, characterized in that: The process uses the zinc oxide production waste gas filtration equipment with purification function as claimed in claim 6, comprising the following steps: Step 1: adding material, adding liquid medicine to the lower inner part of the housing (2), with the liquid medicine level being lower than the upper end of the second pipe (4); Step 2: Wetting: starting the pump body (201) to allow the liquid medicine in the lower inner part of the housing (2) to flow into the filler block (5) to wet the filler block (5); Step 3, ventilation, transporting exhaust gas to pipeline 2 (4) through an external exhaust pipe; Step 4: purification, the exhaust gas flows upward through the packing block (5), and harmful substances in the exhaust gas are absorbed by the packing block (5) and the liquid medicine inside the packing block (5). During this process, solid particulate impurities are intercepted by the filter cloth (6); Step five, cleaning, tearing off the filter cloth (6) to quickly remove solid particulate impurities. During this process, the bent portion (91) of the filter cloth (6) can intercept the falling impurities to prevent the impurities from falling into the liquid medicine.

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