Device for filtering and purifying dust in waste gas

Abstract

The utility model discloses a device for filtering and purifying dust in waste gas. The device comprises a dust filtering module and a medicament infiltration module, the dust filtering module comprises an air inlet assembly and a slag removal assembly, the slag removal assembly comprises a cavity structure, a cavity is filled with liquid, and a plurality of groups of transverse screen plates are arranged in the cavity, so that the screen plates are immersed below the liquid level to transversely divide the liquid into a plurality of independent parts; external waste gas is introduced into the cavity from the bottom of the liquid through the gas inlet assembly and then overflows from the liquid level of the liquid; a residue turning assembly is arranged at the top of the cavity of the residue removing assembly, one end of the residue turning assembly is arranged below the liquid level of the cavity, the other end of the residue turning assembly is arranged above the liquid level of the cavity, and floating residues floating on the liquid level are turned out and recycled through the residue turning assembly; and the gas introduced into the cavity of the deslagging assembly overflows from the liquid level at the top of the cavity and then is introduced into the medicament infiltration module. And the whole device adopts the dust filtering module and the medicament infiltration module, so that the filtering effect on the waste gas is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment equipment, and in particular relates to a dust filtering and purification device in waste gas. Background Art

[0002] In the process of industrial production, waste gas is often generated, which is mixed with a large amount of dust. The purification of dust waste gas is an important part of environmental protection. Direct emission of dust waste gas and long-term exposure of human body to this environment will cause respiratory diseases such as asthma, alveolitis, and pneumoconiosis, and also reduce atmospheric visibility, affecting air quality and the environment. Random emission of dust waste gas will also increase abnormal wear of equipment, shorten the life of equipment, and increase equipment maintenance costs.

[0003] In the Chinese patent application publication number CN218188666U, a waste gas cyclone tower treatment equipment is disclosed, which includes a support structure and a purification structure. The support structure includes a water tank, a cyclone tower and a traction member. The water tank and the cyclone tower are fixedly connected by a fixed column. The vertical plate is fixed to the inner upper end of the cyclone tower. The water pump is installed on one side of the water tank. The spray pipe is installed between the vertical plate and the water pump. The partition is fixed to the inside of the cyclone tower. The bottom plate is fixed to the vertical plate and the cyclone tower. Purification parts are installed on the surface of the vertical plate, the partition and the cyclone tower. However, in the actual purification process, the slag removal and filtration effect is extremely limited. It is only suitable for the treatment of small-flow waste gas. When a large-flow waste gas occurs, the treatment capacity of a simple spray pipe is extremely limited. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a dust filtering and purification device in exhaust gas, which solves the above-mentioned technical problems existing in the existing technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A device for filtering and purifying dust in exhaust gas, comprising a dust filtering module and a pharmaceutical infiltration module;

[0007] The dust filter module includes an air intake assembly and a slag removal assembly. The slag removal assembly includes at least one cavity structure, the cavity is filled with liquid, and multiple sets of transverse screen plates are arranged in the cavity. The screen plates are immersed below the liquid level to divide the liquid into multiple independent parts in the transverse direction. The external exhaust gas is introduced into the cavity from the bottom of the liquid through the air intake assembly and then overflows from the liquid surface.

[0008] A slag turning assembly is provided at the top of the cavity of the slag removal assembly, with one end of the slag turning assembly placed below the liquid level in the cavity and the other end placed above the liquid level in the cavity, so that the slag floating on the liquid surface is turned out and recovered by the slag turning assembly;

[0009] The gas introduced into the cavity of the slag removal component overflows from the liquid level at the top of the cavity and then enters the reagent infiltration module.

[0010] The agent infiltration module divides the inner cavity where the agent infiltration module is located into multiple independent infiltration chambers through multiple groups of vertically arranged first air channels in the middle, and the first air channels realize gas communication from the top of the infiltration chamber of the upper group to the bottom of the infiltration chamber of the next group. Each group of the infiltration chambers is provided with multiple groups of screen plates arranged in the vertical direction, so that the screen plates are located below the agent liquid level in the infiltration chamber, and the treated waste gas overflows and is discharged from the end.

[0011] Furthermore, the slag removal component is provided with two independent cavity structures connected at the top in the horizontal direction, namely the first cavity and the second cavity. The top of the first cavity is provided with a slag turning component, the second cavity is located on one side of the first cavity, and multiple groups of screen plates are transversely provided in the cavity area where the first cavity and the second cavity are located;

[0012] A second air passage is formed at the top of the first cavity and the second cavity, and exhaust gas is passed from the top of the first cavity to the bottom of the second cavity through the second air passage to form gas communication.

[0013] Furthermore, a third cavity is provided on the other side of the first cavity, and the third cavity is in air communication with the top of the first cavity, and the solid matter collected by the slag turning assembly is collected through the third cavity.

[0014] Furthermore, a plurality of groups of transverse limiting bars are horizontally arranged on the inner cavity wall where the first cavity and the second cavity are located, and symmetrical grooves are arranged on opposite sides of the limiting bars, and the screen plate is fixed by the grooves of the limiting bars.

[0015] Furthermore, the apertures of the screen plates decrease from bottom to top, and the aperture density of the screen plates increases from bottom to top, and the aperture cross-sectional area of each group of screen plates is the same;

[0016] At the same time, the bottommost screen plate where the second cavity is located, close to the side where the second air channel is located, is a solid filling structure.

[0017] Furthermore, a recovery assembly is provided at the bottom of the first cavity, the second cavity, and the third cavity. The recovery assembly includes two sets of independently controlled upper and lower closing plates and a bearing cavity. The recovery assembly as a whole presents a cavity structure that is wide at the top and narrow at the bottom, and is located between the upper and lower sets of closing plates to form a bearing cavity.

[0018] A pipe is connected to the bearing cavity of the recovery component, and the material deposited in the bearing cavity is recovered through the pipe.

[0019] Furthermore, the slag turning assembly includes a driving member and a slag turning plate. The cross section of the slag turning plate is an L-shaped structural plate, and the L-shaped vertical side of the slag turning plate extends outward. The driving member is used to realize the turning drive of the slag turning plate, thereby forming a slag turning plate that grabs the slag on the liquid surface.

[0020] Water holes are provided on both sides of the slag turning plate.

[0021] Furthermore, a cooling assembly is provided at the front end portion where the air intake assembly is located. The cooling assembly includes an air trough and a water trough. The air trough and the water trough are staggered. Exhaust gas is introduced into the air trough, and recycled return water is introduced into the water trough.

[0022] Furthermore, a negative pressure is formed in the cavity where the dust filtering module and the reagent infiltration module are located, so that the exhaust gas is passed into the dust filtering module without power to perform dust filtering operations.

[0023] Furthermore, a bearing assembly is provided in the infiltration chamber, and the upper and lower screen plates are fixed by the bearing assembly;

[0024] The bearing assembly includes a positioning pipe and a sleeve. The positioning pipe is located in the infiltration chamber and is provided with multiple groups of screen plates in the vertical direction and simultaneously penetrates the built-in multiple groups. The two ends of the positioning pipe are respectively fixed to the upper and lower inner walls of the infiltration chamber;

[0025] The sleeve member is sleeved on the outer wall of the positioning pipe member, and the upper and lower end surfaces of the sleeve member are panel structures respectively, forming support for the bottom and top of two adjacent groups of screen plates respectively.

[0026] Beneficial effects of the utility model:

[0027] 1. The dust filter module used in this device uses a slag removal component that can remove insoluble matter in the exhaust gas. The insoluble matter in the upper layer is removed by the slag turning component, and the insoluble matter in the lower layer is removed by the recovery component at the bottom, thus achieving solid-liquid separation.

[0028] 2. The changes in the aperture and aperture density of the screen plates in the dust filter module and the reagent infiltration module of this device can break up the exhaust gas bubbles in the liquid, thereby increasing the contact area between the exhaust gas and the liquid, thereby improving the filtering effect of the exhaust gas.

[0029] 3. The dust filter module and the chemical infiltration module used in the entire equipment form a negative pressure in the cavity where the waste gas is located, so that the waste gas passes into the dust filter module without power for dust filtration, and then passes through the chemical infiltration module for chemical filtration, which can save energy consumption.

[0030] 4. When the exhaust gas enters the device, it passes through the cooling component to cool the exhaust gas, reducing the damage of high-temperature exhaust gas to the entire device. At the same time, the return water that cools the exhaust gas is heated, and the heating pipeline can provide additional heat energy for the insulation system of the factory.

[0031] 5. The slag turning component adopted in this device has a unique L-shaped slag turning plate, which can grab the slag above the liquid level when it sinks and rises, and the liquid will overflow through the water holes on the side, which will not cause a large amount of liquid loss and the liquid level to drop too quickly. At the same time, the slag will be grabbed and collected through the turning of the slag turning plate, which improves the efficiency of slag removal and facilitates subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0034] Figure 2 This is a schematic diagram of the cross-sectional structure of the dust filter module according to an embodiment of the present utility model;

[0035] Figure 3 This is an embodiment of the utility model Figure 2 Schematic diagram of part of the structure at A in the middle;

[0036] Figure 4 This is a schematic structural diagram of a cooling assembly according to an embodiment of the present utility model;

[0037] Figure 5 This is a schematic diagram of the cross-sectional structure of the cooling assembly of an embodiment of the present utility model;

[0038] Figure 6 This is a schematic diagram of the screen plate structure of an embodiment of the present utility model;

[0039] Figure 7 This is a schematic structural diagram of a slag turning assembly according to an embodiment of the present invention;

[0040] Figure 8 This is a schematic structural diagram of a slag turning plate according to an embodiment of the present utility model;

[0041] Figure 9 This is a schematic diagram of the cross-sectional structure of the recycling component of an embodiment of the present utility model;

[0042] Figure 10 This is a schematic diagram of the structure of the drug infiltration module of an embodiment of the present utility model;

[0043] Figure 11 This is an embodiment of the utility model Figure 10 Schematic diagram of the partial structure at B in the middle;

[0044] Figure 12 It is a schematic structural diagram of a sleeve member according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0045] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] like Figure 1 As shown, the embodiment of the present invention provides a dust filtration and purification device for exhaust gas, comprising a dust filtration module 1 and a reagent infiltration module 2;

[0047] like Figure 2 As shown, the dust filter module 1 includes an air intake component 11 and a slag removal component 12. The slag removal component 12 includes at least one cavity structure. In this application, two interconnected cavities (respectively, a first cavity 101 and a second cavity 102) are used. Of course, according to actual use needs, more groups can be added, all within the scope of protection of this application. The first cavity 101 and the second cavity 102 are filled with liquid to form a liquid seal. Figure 6 As shown, a plurality of horizontal screen plates 121 are arranged in the cavity. At this time, the screen plates 121 are immersed below the liquid surface, and the plurality of screen plates 121 divide the liquid in the cavity into a plurality of parts in the upper and lower directions. The air intake component 11 passes the external exhaust gas from the bottom of the liquid into the cavity, and then overflows from the liquid surface.

[0048] like Figure 4 、 Figure 5As shown, since the exhaust gas is directly introduced from the factory area, its temperature is relatively high. If it is directly introduced into the equipment, it will cause damage to the equipment. Therefore, a cooling component 13 is provided at the front end where the air intake component 11 is located. The cooling component 13 includes an air trough 131 and a water trough 132. The air trough 131 and the water trough 132 are staggered. Exhaust gas is introduced into the air trough 131, and recycled return water is introduced into the water trough 132. This return water reduces the temperature of the exhaust gas without direct contact with the exhaust gas, and obtains heated return water, which can be used for heating operations in other places in the factory area, and heat energy is recycled.

[0049] A slag turning assembly 122 is provided at the top of the first cavity 101. The second cavity 102 is located adjacent to the first cavity 101. A second air channel 103 is formed at the top of the first and second cavities 101, 102 (the second air channel 103 can also isolate the liquid contained in the first and second cavities 101, 102). Exhaust gas is passed from the top of the first cavity 101 to the bottom of the second cavity 102 through the second air channel 103, thereby establishing gas communication. One end of the slag turning assembly 122 is placed below the liquid level in the cavity, while the other end is placed above the liquid level in the cavity. Slag floating on the liquid surface is turned out and recovered by the slag turning assembly 122.

[0050] A third cavity 104 is provided on the other side of the first cavity 101 . The third cavity 104 is in air communication with the top of the first cavity 101 , and the solid matter turned over by the slag turning assembly 122 is collected through the third cavity 104 .

[0051] like Figure 7 、 Figure 8As shown, at this time, the slag turning assembly 122 includes a driving member 1221 and a slag turning plate 1222. The cross-section of the slag turning plate 1222 is an L-shaped structural plate. The driving member 1221 can simultaneously drive the rotation of the slag turning plate 1222, and the L-shaped vertical side of the slag turning plate 1222 extends outward, that is, when it is located at the upper part of the slag turning assembly 122, the L-shaped structure of the slag turning plate 1222 forms a grip for the foam on the liquid surface, but the two sides of the slag turning plate 1222 are provided with through holes. When the slag turning plate 1222 is turned up from below the liquid surface, the liquid will overflow from both sides (in order to increase the penetration efficiency of the liquid, water holes 1223 are provided on the two side edges of the slag turning plate 1222, and the liquid can flow out smoothly through the water holes 1223, but the foam will adhere to the slag turning plate 1222 due to its own tension), and the foam There will be a certain adhesion tension in itself, and it will continue to adhere to the position between the L-shaped vertical side and the bottom side of the slag turning plate 1222. When the slag turning plate 1222 flips to the top, the position between the L-shaped vertical side and the bottom side of the slag turning plate 1222 is swapped (that is, the bottom side is facing up). Therefore, the foam previously attached to the slag turning plate 1222 will fall into the adjacent third cavity 104 under the action of gravity and be recovered. Then the slag turning plate 1222 continues to repeat the above action, enters below the liquid level of the first cavity 101, and is lifted up from the upper surface of the liquid again, thereby continuously turning out the foam deposited and floating above the liquid level of the first cavity 101, and falling into the third cavity 104 for recovery. At this time, since the third cavity 104 recovers all the floating slag, it can be further dehydrated and used as combustible fuel.

[0052] As for the heavier dust (i.e., the density is greater than the liquid density), it is concentrated at the bottom of the first cavity 101. A recovery component 3 is provided at the bottom of the first cavity 101. Figure 9 As shown, the recovery component 3 includes two sets of independently controlled closing plates 31 and a carrying cavity 32. The recovery component 3 as a whole presents a cavity structure that is wide at the top and narrow at the bottom (this structure can deposit more solid matter). At the same time, a carrying cavity 32 is formed between the upper and lower sets of closing plates 31. When cleaning is required, the upper closing plate 31 is first opened to allow the deposited solid matter to continue to sink, and then the upper closing plate 31 is closed, so that the carrying cavity 32 formed between the upper and lower sets of closing plates 31 is used to collect the deposited solid matter, and then the bottom closing plate 31 is opened to allow the solid matter deposited in the carrying cavity 32 to be removed.

[0053] Of course, in order to collect the materials in a centralized manner, a pipe is connected to the bearing cavity 32 of the recovery component 3, and the materials deposited in the bearing cavity 32 are recovered through the pipe. There is no need to open and close each group of recovery components 3 for recovery separately, thereby improving the recovery efficiency.

[0054] like Figure 3As shown, multiple groups of transverse limiting bars 111 are horizontally arranged on the inner cavity wall where the first cavity 101 and the second cavity 102 are located, and symmetrical grooves 112 are arranged on the opposite sides of the limiting bars 111. The screen plate 121 is fixed by the grooves 112 of the limiting bars 111. In this way, the screen plate 121 can be detachably connected, which is convenient for replacement at any time, and it is not easy to shake under the impact of exhaust gas, thereby ensuring the ventilation and filtering effect.

[0055] In addition, the aperture of the screen plate 121 decreases from bottom to top, and the aperture density of the screen plate 121 increases from bottom to top; and the aperture cross-sectional area of each group of screen plates 121 is the same. Since the pressure at the bottom of the cavity where the screen plate 121 is located is relatively high, when the exhaust gas enters, it will be subjected to a greater pressure, that is, the bubbles formed by the exhaust gas at the bottom of the liquid are small. As the exhaust gas bubbles float up in the liquid, the pressure they are subjected to will gradually decrease, and the bubble volume will gradually increase, and the debris stored in the bubbles cannot fully contact the liquid.

[0056] Therefore, in this application, the mesh plate 121 at the bottom has a large aperture and a small number, so that the exhaust gas can quickly pass through the mesh plate 121 when it is just introduced. However, the number of holes can quickly divide the introduced exhaust gas into multiple smaller bubbles, and can also enable larger particles of suspended matter to quickly pass through the through-hole aperture, avoiding excessive accumulation at the bottom of the mesh plate 121, affecting the ventilation efficiency. At the same time, when too much accumulation at the bottom of the mesh plate 121 is caused by excessive pressure, the mesh plate 121 will be deformed.

[0057] As the exhaust gas bubbles gradually rise, the pressure on the exhaust gas bubbles decreases and the volume increases. When the aperture of the upper screen plate 121 is small, the rising exhaust gas bubbles will continue to be divided into smaller volumes (the outer surface area of the bubbles will further increase), thereby increasing the contact area between the exhaust gas bubbles and the liquid, and fully dissolving the soluble substances in the exhaust gas. In order to ensure ventilation efficiency, the cross-sectional area of the aperture of the upper and lower groups of screen plates 121 is equal.

[0058] At the same time, on the bottommost mesh plate 121 where the second cavity 102 is located, the side of the mesh plate 121 closest to the second airway 103 is a solid filling structure, while the side away from it still uses a through-hole structure for ventilation. This design can further improve the exhaust gas's full contact with the liquid filling inside the second cavity 102 when it enters the second airway 103, thereby improving the filtration efficiency. Of course, a third or fourth cavity can be added as needed to further improve the filtration efficiency of the exhaust gas.

[0059] The gas introduced into the cavity of the slag removal component 12 overflows from the liquid level at the top of the cavity and then enters the reagent infiltration module 2, through which the reagent infiltration module 2 forms a reagent treatment for the waste gas, thereby neutralizing the harmful and toxic components in the waste gas.

[0060] like Figure 10 、 Figure 11 As shown, the reagent infiltration module 2 divides the inner cavity where the reagent infiltration module 2 is located into multiple independent infiltration chambers 22 through multiple groups of vertically arranged first air ducts 21 in the middle (an independent liquid inlet pipe and liquid outlet pipe are provided in each group of infiltration chambers 22. Therefore, when the reagent needs to be changed, it can be directly drained and then re-injected with new reagent without affecting the infiltration effect of the adjacent infiltration chambers 22. At the same time, different infiltration chambers 22 are filled with different reagents as needed to meet the requirements of removing harmful components in the exhaust gas). The first air ducts 21 realize gas communication from the top of the infiltration chamber 22 of the previous group to the bottom of the infiltration chamber 22 of the next group. Each group of infiltration chambers 22 is provided with multiple groups of screen plates 121 arranged in the vertical direction, so that the screen plates 121 are located below the liquid level of the reagent in the infiltration chamber 22. Because a certain distance is required between the upper and lower groups of screen plates 121, and when the exhaust gas inlet flow rate is too high, the screen plates 121 are easily impacted and overturned. Finally, the gas overflowing from the reagent infiltration module 2 can be discharged directly, that is, the treated waste gas overflows and is discharged from the end.

[0061] A bearing assembly 23 is provided in the infiltration chamber 22, and the upper and lower distributed screen plates 121 are fixed by the bearing assembly 23; at this time, the bearing assembly 23 includes a positioning pipe 231 and a sleeve 232 (such as Figure 12 As shown), there are multiple groups of positioning pipe fittings 231 arranged in the vertical direction in the infiltration chamber 22. As a skeleton, the pipe fittings 231 simultaneously penetrate the multiple groups of built-in screen plates 121, and their two ends are respectively fixed on the upper and lower inner walls of the infiltration chamber 22. The sleeve fittings 232 are sleeved on the outer wall of the positioning pipe fittings 231, and the upper and lower end surfaces of the sleeve fittings 232 are panel structures, respectively, and form support for the bottom and top of the two adjacent groups of screen plates 121, that is, on the same group of screen plates 121, their upper and lower end surfaces can form end surface support for the screen plates 121, and will not be affected by the impact of the exhaust gas flow and affect its overturning.

[0062] At the same time, the screen plate 121 located in the infiltration chamber 22 has the same layout as the screen plate 121 in the first cavity 101 (or the second cavity 102), that is, the aperture of the screen plate 121 decreases from bottom to top, and the aperture density of the screen plate 121 increases from bottom to top; and the aperture cross-sectional area of each group of screen plates 121 is the same. This design scheme can break up the exhaust gas bubbles introduced into the form of multiple small bubbles, so that they can fully contact the reagent in the infiltration chamber 22, greatly improving the contact effect itself.

[0063] The dust filter module used in the entire equipment forms a negative pressure in the cavity where the agent infiltration module is located, so that the exhaust gas passes into the dust filter module without power for dust filtration, and then passes through the agent infiltration module for agent filtration.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A dust filtration and purification device for exhaust gas, characterized in that: It includes a dust filtering module (1) and a pharmaceutical infiltration module (2); The dust filter module (1) comprises an air intake assembly (11) and a slag removal assembly (12), wherein the slag removal assembly (12) comprises at least one cavity structure, wherein the cavity is filled with liquid, and a plurality of groups of transverse screen plates (121) are arranged in the cavity, wherein the screen plates (121) are immersed below the liquid surface to divide the liquid into a plurality of independent parts in the transverse direction, and the external exhaust gas is introduced into the cavity from the bottom of the liquid through the air intake assembly (11), and then overflows from the liquid surface; A slag turning assembly (122) is provided at the top of the cavity of the slag removal assembly (12), so that one end of the slag turning assembly (122) is placed below the liquid level of the cavity and the other end is placed above the liquid level of the cavity, and the slag floating on the liquid surface is turned out and recovered by the slag turning assembly (122); The gas introduced into the cavity of the slag removal component (12) overflows from the liquid surface at the top of the cavity and then enters the reagent infiltration module (2); The reagent infiltration module (2) divides the inner cavity of the reagent infiltration module (2) into a plurality of mutually independent infiltration chambers (22) through a plurality of groups of vertically arranged first air channels (21) in the middle, and the first air channels (21) realize gas communication from the top of the infiltration chamber (22) of the previous group to the bottom of the infiltration chamber (22) of the next group, and each group of the infiltration chambers (22) is provided with a plurality of groups of screen plates (121) arranged in the vertical direction, so that the screen plates (121) are located below the reagent liquid level in the infiltration chamber (22), and the treated waste gas overflows and is discharged from the end.

2. The dust filtering and purification device in exhaust gas according to claim 1, characterized in that: The slag removal component (12) is provided with two independent cavity structures connected at the top in the horizontal direction, namely a first cavity (101) and a second cavity (102), a slag turning component (122) is provided at the top of the first cavity (101), the second cavity (102) is located on one side of the first cavity (101), and a plurality of groups of screen plates (121) are transversely provided in the cavity area where the first cavity (101) and the second cavity (102) are located; A second air passage (103) is formed at the top of the first cavity (101) and the second cavity (102), and exhaust gas is allowed to enter the bottom of the second cavity (102) from the top of the first cavity (101) through the second air passage (103), thereby forming a gas connection.

3. The dust filtering and purification device for exhaust gas according to claim 2, characterized in that: A third cavity (104) is provided on the other side of the first cavity (101), wherein the third cavity (104) is in air communication with the top of the first cavity (101), and solid matter collected from the slag turning assembly (122) is formed through the third cavity (104).

4. The dust filtering and purification device for exhaust gas according to claim 2, characterized in that: A plurality of groups of transverse limiting strips (111) are horizontally arranged on the inner cavity wall where the first cavity (101) and the second cavity (102) are located, and symmetrical strip grooves (112) are arranged on opposite sides of the limiting strips (111). The screen plate (121) is fixed by the strip grooves (112) of the limiting strips (111).

5. The dust filtering and purification device for exhaust gas according to claim 4, characterized in that: The apertures of the screen plates (121) decrease from bottom to top, and the aperture density of the screen plates (121) increases from bottom to top, and the aperture cross-sectional area of each group of screen plates (121) is the same; At the same time, the bottommost screen plate (121) where the second cavity (102) is located, and the side close to the second air channel (103) is a solid filling structure.

6. The dust filtering and purification device for exhaust gas according to claim 3, characterized in that: A recovery assembly (3) is provided at the bottom of the first cavity (101), the second cavity (102), and the third cavity (104). The recovery assembly (3) comprises two upper and lower groups of independently controlled closing plates (31) and a bearing cavity (32). The recovery assembly (3) as a whole presents a cavity structure that is wide at the top and narrow at the bottom, and is located between the upper and lower groups of closing plates (31) to form a bearing cavity (32). Furthermore, a pipe is connected to the bearing cavity (32) of the recovery component (3), and the material deposited in the bearing cavity (32) is recovered through the pipe.

7. The dust filtering and purification device for exhaust gas according to claim 1, characterized in that: The slag turning assembly (122) comprises a driving member (1221) and a slag turning plate (1222); the cross section of the slag turning plate (1222) is an L-shaped structural plate, and the L-shaped vertical side of the slag turning plate (1222) extends outward; the driving member (1221) is used to realize the turning drive of the slag turning plate (1222), thereby enabling the slag turning plate (1222) to grab the slag on the liquid surface; Water holes (1223) are provided on both side edges of the slag turning plate (1222).

8. The dust filtering and purification device for exhaust gas according to claim 1, characterized in that: A cooling assembly (13) is provided at the front end portion of the air intake assembly (11), the cooling assembly (13) comprising an air trough (131) and a water trough (132), wherein the air trough (131) and the water trough (132) are arranged in a staggered manner, exhaust gas is introduced into the air trough (131), and recycled return water is introduced into the water trough (132).

9. The dust filtering and purification device for exhaust gas according to claim 1, characterized in that: Negative pressure is formed in the cavity where the dust filter module (1) and the agent infiltration module (2) are located, so that the waste gas is passed into the dust filter module (1) without power to perform dust filtering operations.

10. The dust filtering and purification device for exhaust gas according to claim 1, characterized in that: A bearing assembly (23) is provided in the infiltration chamber (22), and the upper and lower distributed screen plates (121) are fixed by the bearing assembly (23); The bearing assembly (23) includes a positioning pipe (231) and a sleeve (232). The positioning pipe (231) is located in the infiltration chamber (22) and is provided with multiple groups of screen plates (121) in the vertical direction and simultaneously penetrates the built-in groups. The two ends of the positioning pipe (231) are respectively fixed to the upper and lower inner walls of the infiltration chamber (22). The sleeve member (232) is sleeved on the outer wall of the positioning tube member (231), and the upper and lower end surfaces of the sleeve member (232) are panel structures, respectively forming support for the bottom and top of two adjacent groups of screen plates (121).

Images