Waste gas filter for residual dust

Abstract

The utility model discloses a waste gas filter for residual dust. The waste gas filter comprises a slag turning assembly, a first filter cavity, a second filter cavity and a filter assembly, the residue turning assembly comprises a feeding cavity and a residue turning roller, filtrate is contained in the feeding cavity, waste gas enters the feeding cavity through the bottom, foam floating on the liquid level of the filtrate is collected through rotation of the residue turning roller arranged at the top, and the foam is conveyed into the residue turning recovery assembly with the side edge isolated from the feeding cavity through a partition plate; the first filtering cavity is communicated with a feeding cavity of the slag overturning assembly; the second filtering cavity is communicated with the first filtering cavity, and the first filtering cavity is completely immersed by the filtering liquid. The whole equipment can effectively collect foams floating on insoluble substance dust in waste gas, and can realize the overturning operation of the slag overturning roller by virtue of the impact force of the waste gas inlet, so that the effects of effectively saving energy and reducing consumption are achieved.

Description

Technical Field

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

[0002] In the process of industrial production, a large amount of waste gas is usually generated. This waste gas not only contains a large number of toxic and harmful components, but also contains a large amount of insoluble and soluble dust. Therefore, when dealing with the residual dust, it is necessary to combine multiple methods, such as using activated carbon adsorption technology to absorb organic odor in the waste gas, but it is easy to cause blockage of activated carbon and the effect is general; or using high-temperature electrostatic precipitator technology, which has good effects but is extremely costly; the wet desulfurization technology used is still limited in its ability to remove insoluble matter.

[0003] In Chinese patent application publication number CN106563327A, a dust-containing industrial waste gas filter is disclosed, which is provided with a primary filter chamber and a secondary filter chamber loaded with filtered liquid. The secondary filter chamber is located above the primary filter chamber, and the two are connected through a first liquid pipeline and a first gas channel; a sedimentation outlet is provided at the bottom of the primary filter chamber, and an industrial waste gas delivery pipeline is provided at the top.

[0004] This type of equipment can indeed remove dust from some exhaust gases during actual filtration, but the floating dust accumulates on the top of the filter chamber, which affects the overall filtration effect. The entire equipment needs to be shut down and cleaned regularly. The sedimentation outlet at the bottom needs to be opened regularly to remove sediment. When it is opened, the entire equipment needs to be suspended, which affects the operation of the entire equipment. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an exhaust gas filter for residual dust, which solves the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An exhaust gas filter for residual dust, comprising a slag turning component, a first filter chamber, a second filter chamber, and a filter component;

[0008] The slag turning assembly includes a feed chamber and a slag turning roller. The feed chamber is filled with filtered liquid. Exhaust gas enters the feed chamber through the bottom. The slag turning roller arranged on the top rotates to collect the foam floating on the surface of the filtered liquid and transmit it to the slag turning recovery assembly which is isolated from the feed chamber by a partition on the side.

[0009] The first filter chamber is connected to the feed chamber of the slag turning assembly;

[0010] The second filter chamber is communicated with the first filter chamber, and the filtrate completely immerses the first filter chamber;

[0011] A filter assembly is arranged at the upper part of the second filter chamber. The filter assembly is located above the level of the filtered liquid in the second filter chamber. The filter assembly includes filter cotton and a winding roller. The filter cotton is wound up by the winding roller. The filter cotton forms a cover for the upper air outlet of the second filter chamber, so that when the exhaust gas passes through the filter cotton, the winding roller continuously winds and unwinds the filter cotton.

[0012] Furthermore, the side edge of the slag turning roller extends to the outside of the feed chamber toward one end, and forms a driving roller. When the exhaust gas passes through the driving roller located in the air inlet, it is synchronously driven to rotate, so as to realize the rotation of the slag turning roller.

[0013] Furthermore, the slag turning roller is radially provided with a plurality of slag turning plates outward, and the slag turning plates of the slag turning roller are rotated to disturb and turn the foam on the liquid surface of the filtered liquid in the feed chamber, and turn the floating foam to an adjacent slag turning recovery component for collection.

[0014] Furthermore, an arc-shaped slag turning baffle that is raised upward is provided on the side of the top slag turning roller located above the feed chamber and the slag recovery assembly, and the upper wall of the slag turning baffle is fitted with the outer diameter wall of the slag turning plate during rotation.

[0015] Furthermore, the end surface of the slag turning plate is arranged as a mesh plate structure penetrating front to back, so that when the slag turning plate is rotated and turned over, the filtrate passes through the mesh of the slag turning plate.

[0016] Further, the connection where the air inlet enters the feed chamber is located at the bottom and is provided with a filter screen;

[0017] At the same time, a movable blade is arranged at the upper part where the air inlet is located, and the flow rate of the exhaust gas entering the air inlet is controlled by the swing of the movable blade.

[0018] Furthermore, a first recovery component and a second recovery component are respectively provided below the first filter chamber and the second filter chamber, and the first recovery component, the second recovery component and the slag recovery component adopt the same structure, including a first flap and a second flap, so that the first flap and the second flap are distributed in upper and lower positions, and when the second flap is closed, a cavity for deposition is formed at the upper part, and before the second flap is opened, an isolated space is formed between the cavity deposited at the upper part of the second flap by closing the first flap, and the deposition liquid is emptied.

[0019] Furthermore, the feed chamber, the first filter chamber and the second filter chamber are separated by a grid plate, and the filtrate can flow between each other, and the grid plate is opened at the lower position.

[0020] Furthermore, a cooling plate is provided below the filter assembly so that the gas passing through the second filter cavity passes through the cooling plate and then is filtered through the filter assembly;

[0021] The cooling plate forms an angle with the horizontal plane.

[0022] Furthermore, a liquid level sensor is provided in the feed chamber to ensure that the filtrate in the feed chamber is in a relatively balanced position.

[0023] Beneficial effects of the utility model:

[0024] 1. The slag turning component adopted in this device can effectively realize the centralized collection of the foam floating on the insoluble dust in the exhaust gas, and can realize the turning operation of the slag turning roller with the help of the impact force of the exhaust gas inlet itself, thus achieving the effect of effective energy saving and consumption reduction.

[0025] 2. Recovery components are provided below the first filter chamber and the second filter chamber used in this device. According to the flow rate of the exhaust gas and the weight deposition of the insoluble matter, the deposited insoluble matter can be effectively and centrally removed without stopping the machine, thereby improving the filtration efficiency of the exhaust gas.

[0026] 3. The filter assembly used in this device can effectively collect water vapor and insoluble substances in the exhaust gas, and can effectively collect the gas after passing through the filter cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of the overall front section structure of an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the expanded structure of the air inlet position of an embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the overall side sectional structure of an embodiment of the utility model;

[0032] Figure 5This is a schematic diagram of the connection position structure of the slag turning assembly of the embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the overall structure of the slag turning roller in an embodiment of the utility model;

[0034] Figure 7 It is a schematic diagram of the cross-sectional structure of the air inlet position of an embodiment of the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the first recycling component of an embodiment of the utility model;

[0036] Fig. 9 It is a schematic diagram of the structure of the filter assembly of an embodiment of the utility model. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] like Figure 1 , Figure 2 As shown, an embodiment of the utility model provides an exhaust gas filter for residual dust, including a slag turning component 1, a first filter chamber 2, a second filter chamber 3, and a filter component 4.

[0039] like Figure 4 As shown, the slag turning component 1 includes a feed chamber 11 and a slag turning roller 12. The feed chamber 11 is filled with filtrate (the filtrate is changed according to the composition of the introduced waste gas, and can greatly degrade the toxic and harmful components in the waste gas). The waste gas enters the feed chamber 11 through the bottom. The waste gas enters from the bottom, so that it can fully contact with the filtrate contained in the feed chamber 11, thereby increasing the contact time between the harmful components in the waste gas and the pharmaceutical components of the filtrate. Subsequently, the slag turning roller 12 arranged on the top rotates to collect the foam floating on the surface of the filtrate (when the waste gas is introduced into the filtrate of the feed chamber 11 from the bottom, the insoluble dust will float on the surface of the filtrate), and transmit it to the slag turning recovery component 13 which is isolated from the feed chamber 11 by a partition on the side. The connection point where the air inlet enters the feed chamber 11 is located at the bottom and is provided with a filter screen. This filter screen can improve the blocking of larger particles during the exhaust gas passing through and prevent accumulation and blockage in the feed chamber 11.

[0040] like Figure 2As shown, the slag recovery component 13 at this time includes a first flap 101 and a second flap 102, so that the first flap 101 and the second flap 102 are distributed in the upper and lower positions. At the beginning, the second flap 102 is in an open state, and the first flap 101 located below is in a closed state, so that the structure located above the first flap 101 can form a cavity for carrying floating foam. When the foam accumulates to a certain amount, the position where the second flap 102 is located can be closed first, that is, an independent cavity area is formed between the first flap 101 and the second flap 102. Therefore, the foam accumulated in the interval position can be concentrated and recovered and emptied by the outside. After the cavity between the first flap 101 and the second flap 102 is emptied, the second flap 102 is closed again and the first flap 101 is opened. In the whole process, the role of the first flap 101 is only a cache.

[0041] like Figure 3 , Figure 5 As shown, the side edge of the slag turning roller 12 extends outward from one end to the outside of the feed chamber 11, and forms a driving roller 123. The outside of the driving roller 123 is also radially provided with a plurality of leaf plates. When the exhaust gas is introduced, the flow rate of the exhaust gas itself can drive the driving roller 123 to rotate, so as to synchronously realize the rotation of the slag turning roller 12. That is, during the entire operation of the slag turning roller 12, no external power source is required, saving energy consumption. Figure 7 As shown, of course, according to needs, movable blades 111 are also provided at the upper part where the air inlet is located. The flow rate of the exhaust gas entering the air inlet is controlled by the swing of the movable blades 111. In specific operation, when there is a lot of foam in the filtrate in the feed chamber 11, the opening and closing angles of the movable blades 111 located at the air inlet are opened to enable the full flow of exhaust gas to impact the driving roller 123, thereby increasing the turning rate of the slag turning roller 12; when there is a little foam in the filtrate in the feed chamber 11, the opening and closing angles of the movable blades 111 located at the air inlet are gradually closed to enable a small flow of exhaust gas to impact the driving roller 123, thereby slowing down the turning rate of the slag turning roller 12.

[0042] like Figure 6 As shown, the slag turning roller 12 is radially provided with a plurality of slag turning plates 121 (radially outward), and the slag turning plates 121 of the slag turning roller 12 rotate to disturb and turn the foam on the liquid surface of the filtrate contained in the feed chamber 11. At this time, the lower edge of the slag turning plates 121 always keeps in contact with the surface of the filtrate. For this purpose, a liquid level sensor is also synchronously arranged in the feed chamber 11 to ensure that the filtrate in the feed chamber 11 is in a relatively balanced position, thereby ensuring that the slag turning plates 121 of the slag turning roller 12 can always be in contact with the foam on the liquid surface of the filtrate during the turning process.

[0043] An arc-shaped upwardly raised slag baffle 122 is provided on the side of the top slag turning roller 12 located above the feed chamber 11 and the slag turning recovery component 13 (which can block the liquid level fluctuation of the filtrate in the feed chamber 11 from entering the slag turning recovery component 13), and the upper wall of the slag turning baffle 122 is in contact with the outer diameter wall of the slag turning plate 121 during rotation. Therefore, each slag turning plate 121 is in contact with the inner surface of the slag turning baffle 122 during rotation, so that a larger spatial area can be formed for carrying foam.

[0044] Since the conventional slag turning plate 121 is a plate-like structure, when it rotates, it will not only turn over with the foam, but also turn over the filtrate synchronously. Therefore, in the present application, the end face of the slag turning plate 121 is set as a mesh plate structure that penetrates from front to back, so that when the slag turning plate 121 rotates and turns over, the filtrate passes through the mesh of the slag turning plate 121, and the foam will continue to be taken away by the slag turning plate 121 until it falls into the adjacent slag turning recovery component 13, which can reduce the waste and loss of the filtrate. The floating foam is then turned over to the adjacent slag turning recovery component 13 for collection.

[0045] The first filter chamber 2 is communicated with the feed chamber 11 of the slag turning assembly 1 .

[0046] The second filter chamber 3 is connected to the first filter chamber 2 (of course, as needed, the number of filter chambers is increased according to the composition of the exhaust gas to increase the residence time of the exhaust gas in the filter chamber, thereby improving the filtration efficiency of the exhaust gas), and the filtrate completely immerses the first filter chamber 2 (this setting can reduce the difficulty of the foam floating above the filtrate in the feed chamber 11 to enter the next filter chamber). When in use, by lowering the relative position height of the first filter chamber 2 and ensuring that the filtrate liquid level of the feed chamber 11 and the second filter chamber 3 are not filled, the exhaust gas can be fully contacted in the first filter chamber 2 and finally flow into the second filter chamber 3.

[0047] like Figure 8As shown, since the exhaust gas will also be mixed with heavier particulate matter when it is introduced, the first recovery component 21 and the second recovery component 31 are respectively arranged at the bottom of the first filter chamber 2 and the second filter chamber 3, and the first recovery component 21, the second recovery component 31 and the slag recovery component 13 adopt the same structure, all of which include a first flip cover 101 and a second flip cover 102, so that the first flip cover 101 and the second flip cover 102 are distributed in upper and lower positions, and when the second flip cover 102 is closed, a cavity for deposition is formed at the upper part, and before the second flip cover 102 is opened, the first flip cover 101 is closed (at this time, the space at the upper part of the first flip cover 101 can be isolated from the lower part where the second flip cover 102 is located), so as to form an isolated space between the first flip cover 101 and the cavity deposited at the upper part of the second flip cover 102, and the first flip cover 101 is opened again to realize the emptying of the sediment, and then reset, open the second flip cover 102, and collect it again. In order to improve the collection efficiency, the first recovery component 21 and the second recovery component 31 present an inverted conical structure.

[0048] The feed chamber 11, the first filter chamber 2 and the second filter chamber 3 are separated by the grid plate 103, and the filtrate can circulate with each other. At the same time, the grid plate 103 is open at the lower position. This design structure can allow the sediment at the bottom of the feed chamber 11 and the first filter chamber 2 to flow into the next chamber along with the exhaust gas and accumulate at the bottom. The heavier substances will accumulate in the first recovery component 21 and the second recovery component 31, so that the entire equipment can run for a long time without being blocked, thereby ensuring the efficiency of removing exhaust gas.

[0049] like Fig. 9 As shown, even if the exhaust gas passes through the filtration of the filtrate, there are still relatively small particles in the gas, which are not easy to deposit and are not easy to be dissolved in the filtrate. Therefore, a filter assembly 4 is arranged at the upper part of the second filter chamber 3. The filter assembly 4 is located above the filtrate level of the second filter chamber 3. The filter assembly 4 includes filter cotton 41 and a winding roller 42. The winding roller 42 forms a cover for the upper air outlet of the second filter chamber 3 to realize that when the exhaust gas passes through the filter cotton 41, the winding roller 42 continuously rewinds and unwinds the filter cotton 41. Therefore, when the filter cotton 41 absorbs the tiny particles of the exhaust gas, it is collected by the winding roller 42. At the same time, the winding roller 42 on the other side can also realize the release of new filter cotton 41.

[0050] Since the exhaust gas overflows from the filtered liquid, a large amount of moisture will remain. In order to reduce the influence of moisture on the adsorption effect of the filter cotton, a cooling plate 401 is arranged below the filter assembly 4, so that the gas passing through the second filter chamber 3 passes through the cooling plate 401 and then is filtered through the filter assembly 4; when the water vapor mixed in the exhaust gas encounters the cooling plate 401, the moisture of the gas can be greatly reduced, so that the gas components continue to be released to the filter assembly 4, and after the water vapor accumulates on the cooling plate 401, the cooling plate 401 forms an angle with the horizontal plane, and the water vapor continues to fall to the second filter chamber 3 on the inclined side.

[0051] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An exhaust gas filter for residual dust, characterized in that: It comprises a slag turning component (1), a first filter chamber (2), a second filter chamber (3), and a filter component (4); The slag turning assembly (1) comprises a feed chamber (11) and a slag turning roller (12). The feed chamber (11) is filled with filtered liquid. Waste gas enters the feed chamber (11) through the bottom. The slag turning roller (12) arranged at the top rotates to collect foam floating on the surface of the filtered liquid and transmit it to a slag turning recovery assembly (13) which is isolated from the feed chamber (11) by a partition plate on the side. The first filter chamber (2) is connected to the feed chamber (11) of the slag turning component (1); The second filter chamber (3) is in communication with the first filter chamber (2), and the filtrate completely immerses the first filter chamber (2); A filter assembly (4) is arranged at the upper part of the second filter chamber (3). The filter assembly (4) is located above the level of the filtered liquid in the second filter chamber (3). The filter assembly (4) comprises filter cotton (41) and a winding roller (42). The filter cotton (41) is wound up by the winding roller (42). The filter cotton (41) forms a cover for the upper air outlet of the second filter chamber (3), so that when the exhaust gas passes through the filter cotton (41), the winding roller (42) continuously winds and unwinds the filter cotton (41).

2. The exhaust gas filter for residual dust according to claim 1, characterized in that: The side edge of the slag turning roller (12) extends outward from the feed chamber (11) to one end, and forms a driving roller (123). When the exhaust gas passes through the driving roller (123) located in the air inlet, the driving roller (123) is driven to rotate synchronously, so as to realize the rotation of the slag turning roller (12).

3. The exhaust gas filter for residual dust according to claim 2, characterized in that: The slag turning roller (12) is provided with a plurality of slag turning plates (121) radially outwardly, and the slag turning plates (121) of the slag turning roller (12) rotate to disturb and turn the foam on the surface of the filtrate contained in the feed chamber (11), and turn the floating foam to an adjacent slag turning recovery component (13) for collection.

4. The exhaust gas filter for residual dust according to claim 3, characterized in that: An arc-shaped slag turning baffle (122) that is raised upward is provided on the side of the top slag turning roller (12) located above the feed chamber (11) and the slag turning recovery component (13), and the upper wall of the slag turning baffle (122) is fitted with the outer diameter wall of the slag turning plate (121) during rotation.

5. The exhaust gas filter for residual dust according to claim 3, characterized in that: The end surface of the slag turning plate (121) is provided with a mesh plate structure penetrating front and back, so that when the slag turning plate (121) is rotated and turned over, the filtrate passes through the mesh of the slag turning plate (121).

6. The exhaust gas filter for residual dust according to claim 1, characterized in that: The connection point where the air inlet enters the feed chamber (11) is located at the bottom and is provided with a filter screen; At the same time, a movable blade (111) is arranged at the upper part of the air inlet, and the flow rate of the exhaust gas entering the air inlet is controlled by swinging the movable blade (111).

7. The exhaust gas filter for residual dust according to claim 1, characterized in that: A first recovery component (21) and a second recovery component (31) are respectively arranged below the first filter chamber (2) and the second filter chamber (3), and the first recovery component (21), the second recovery component (31) and the slag recovery component (13) have the same structure, including a first flip cover (101) and a second flip cover (102), so that the first flip cover (101) and the second flip cover (102) are distributed in upper and lower positions, and when the second flip cover (102) is closed, a cavity for deposition is formed at the top, and before the second flip cover (102) is opened, by closing the first flip cover (101), an isolated space is formed between the cavity deposited at the top of the second flip cover (102), and the deposition liquid is emptied.

8. The exhaust gas filter for residual dust according to claim 1, characterized in that: The feed chamber (11), the first filter chamber (2) and the second filter chamber (3) are separated by a grid plate (103), and the filtrate can flow through each other, while the grid plate (103) is located at the lower position and is open.

9. The exhaust gas filter for residual dust according to claim 1, characterized in that: A cooling plate (401) is provided below the filter assembly (4), so that the gas passing through the second filter chamber (3) passes through the cooling plate (401) and then is filtered through the filter assembly (4); The cooling plate (401) forms an angle with the horizontal plane.

10. The exhaust gas filter for residual dust according to claim 1, characterized in that: A liquid level sensor is provided in the feed chamber (11) to ensure that the filtered liquid in the feed chamber (11) is in a relatively balanced position.

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