Atomizer top tank filtering device

Abstract

The utility model provides a top tank filtering device of an atomizer, which comprises a filtering component, a top tank, a top tank, a top tank, a top tank, a top tank and a bottom tank, and is characterized in that the filtering component comprises a barrel-shaped filtering chamber; the cleaning assembly is located in the filtering cavity and can rotate in the filtering cavity so as to move along the inner wall of the filter screen to clean the filter screen; and the slurry supply pipe is communicated with the filtering chamber and the atomizer and is used for conveying the filtered slurry into the atomizer. According to the utility model, blocked filter holes in the filter screen can be cleaned, the situation that the flow of slurry supplied to the atomizer is reduced due to blockage of the filter screen is effectively reduced, the long-term stable slurry supply amount is ensured, and the normal operation of the atomizer is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to an atomizer top tank filtering device. Background Art

[0002] In the fields of chemical industry, metallurgy, etc., the flue gas generated by some equipment contains a large amount of sulfur dioxide (SO2) and other acidic gases, such as boiler coal-fired flue gas, which cannot be discharged directly into the atmosphere. It is necessary to first pass through the flue gas desulfurization device to desulfurize the flue gas. Flue gas desulfurization technology is also called double alkali flue gas desulfurization technology. Flue gas desulfurization refers to the removal of sulfur oxides (SO2 and SO3) from flue gas or other industrial waste gas. At present, there are dozens of types of flue gas desulfurization technologies. According to whether water is added during the desulfurization process and the dry and wet forms of the desulfurization products, flue gas desulfurization is divided into three major desulfurization processes: wet, semi-dry, and dry. Semi-dry flue gas desulfurization technology is an effective flue gas treatment technology, which is mainly used to reduce SO2 emissions in flue gas to reduce pollution to the environment.

[0003] At present, some iron and steel plants use the SDA (Spray Dryer Absorber, rotary spray drying) semi-dry desulfurization process to treat sintering flue gas. The semi-dry flue gas purification device mainly sprays the desulfurizer into the desulfurization tower through an atomizer. The desulfurizer fully contacts the flue gas in the desulfurization tower and quickly absorbs acidic gases such as SO2. While completing the reaction, it also quickly dries to produce desulfurized ash. The desulfurizer is generally made of CaO, which is sieved by a vibrating screen and added to the digester in a quantitative manner, and water is added to prepare a Ca(OH)2 solution with a certain solid content. Figure 1 , the Ca(OH)2 solution flows into the lime slurry tank by gravity, and the Ca(OH)2 solution in the lime slurry tank is then pumped into the top tank 2 placed on the top of the desulfurization tower by the lime slurry pump, and the slurry in the top tank 2 is filtered by the filter in the top tank 2 and flows into the atomizer. The existing filter 5 is embedded in the slot on the side wall of the top tank 2, and the filter 5 is placed at the bottom of the top tank 2. The rear end of the filter 5 is connected to the slurry supply pipe 4, and the slurry supply pipe 4 is connected to the atomizer, so that the slurry in the top tank 2 flows into the atomizer after being filtered by the filter 5. However, the quicklime (also known as burnt lime, the main component of which is CaO) used in the preparation of the Ca(OH)2 solution often contains mud or insoluble limestone, so that the slurry in the top tank 2 contains a certain concentration of particulate impurities, which can easily cause the filter 5 to be blocked, affecting the slurry flow rate, resulting in substandard flue gas treatment. Figure 2 As shown, in order to replace the filter 5 or take the filter 5 out of the top tank 2 for cleaning, the filter 5 is generally taken out through the bracket 51 connected to the filter 5. However, since there is slurry in the top tank 2, the slot on the side wall of the top tank 2 cannot be seen, and the installation process will take more than ten minutes. If the filter 5 is often taken out of the top tank, particulate impurities will flow into the atomizer during this period, which will cause the atomizer to be blocked over time and fail to spray slurry, resulting in an accident. Summary of the Invention

[0004] The purpose of the present utility model is to provide a filter device for the top tank of an atomizer, which can clean the blocked filter holes on the filter screen, effectively reduce the reduction of the slurry flow rate supplied to the atomizer caused by the blockage of the filter screen, ensure a long-term and stable slurry supply, and ensure the normal operation of the atomizer.

[0005] To achieve the above purpose, the present utility model provides a filter device for the top tank of an atomizer, which includes:

[0006] A filtering member, including a cylindrical filtering chamber, and the filtering chamber includes a cylindrical filter screen;

[0007] A cleaning assembly, located inside the filtering chamber and rotatable in the filtering chamber to move along the inner wall of the filter screen so as to clean the filter screen;

[0008] A slurry supply pipe, communicating the filtering chamber and the atomizer, for sending the filtered slurry into the atomizer.

[0009] Optionally, the cleaning assembly includes a connecting rod and a roller member, the connecting rod is connected to the roller member, and the connecting rod can rotate around the central axis of the filtering chamber, so as to drive the roller member to move along the inner wall of the filter screen to clean the filter screen.

[0010] Optionally, the roller member includes a roller and a plurality of needle-like objects, and the plurality of needle-like objects are arranged on the outer circumferential surface of the roller. The roller can rotate around its own central axis, so that the needle-like objects are inserted into the filter holes of the filter screen to clean the filter screen.

[0011] Optionally, the number of the cleaning assemblies is at least two, and the cleaning assemblies are evenly distributed along the circumferential direction of the filtering chamber.

[0012] Optionally, the filter device includes a driving assembly for driving the cleaning assembly to rotate, and the driving assembly includes a motor and a speed reducer.

[0013] Optionally, the filtering member includes a first end cover and a second end cover, the first end cover and the second end cover respectively cover two axial ends of the filter screen to form the filtering chamber, and an insertion hole is provided on the second end cover, and the slurry supply pipe is inserted into the insertion hole to communicate with the filtering chamber.

[0014] Optionally, the filter device includes a transmission shaft, the transmission shaft passes through the first end cover and is connected to the cleaning assembly for driving the cleaning assembly to rotate. The transmission shaft is in clearance fit with the first end cover, and the clearance fit is smaller than the aperture of the filter holes of the filter screen.

[0015] Optionally, the edge of the first end cover radially extends the filter screen, the edge of the second end cover radially extends the filter screen, and the edge of the first end cover and the edge of the second end cover are connected by at least two studs and nuts, so that the filter screen is fixed between the first end cover and the second end cover.

[0016] Optionally, the filtering device includes a support frame for being placed at the bottom of the top tank and supporting the filtering element, the support frame including a support plate and a plurality of supporting feet, the support plate being provided with positioning holes corresponding one-to-one to the studs and through holes for the slurry supply pipe to pass through.

[0017] Optionally, the slurry supply pipe is provided with a regulating valve with adjustable opening.

[0018] As configured above, the slurry in the top tank flows into the slurry supply pipe after being filtered by the filter component, and then flows into the atomizer through the slurry supply pipe, and is provided with a cleaning component. The driving component drives the cleaning component to rotate in the chamber of the filter component through the transmission shaft, so that the cleaning component can make a circular motion along the inner wall of the filter screen, thereby cleaning the filter screen. In summary, the utility model can clean the blocked filter holes on the filter screen through the cleaning component, which greatly reduces the occurrence of the situation where the slurry flow rate supplied to the atomizer is reduced due to the blockage of the filter screen, and significantly increases the filtering amount of the slurry, avoids manual cleaning or replacement of the filter, reduces the labor intensity of the staff, ensures a long-term and stable supply of slurry, ensures the normal operation of the atomizer, maintains the standard emission of flue gas, and ensures the normal progress of flue gas desulfurization. The utility model also has the characteristics of simple structure, convenient maintenance, high reliability and low investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Those skilled in the art should understand that the drawings provided are for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0020] Figure 1 A schematic diagram of a prior art filter placed in a top tank;

[0021] Figure 2 A schematic diagram of a filter and a bracket of the prior art;

[0022] Figure 3 A schematic diagram of an atomizer top tank filtering device according to an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of a filter component, a cleaning assembly and a transmission shaft of an atomizer top tank filter device according to an embodiment of the utility model;

[0024] Figure 5 for Figure 4 A-direction view;

[0025] Figure 6 Assembly drawing of the first end cover and the second end cover of an embodiment of the present utility model;

[0026] Figure 7 Schematic diagram of the support frame of the filter device of the atomizer top tank of an embodiment of the present utility model;

[0027] Figure 8 is Figure 7 View from direction B of;

[0028] Figure 9 Schematic diagram of the filter member, cleaning assembly and support frame of the filter device of the atomizer top tank of an embodiment of the present utility model.

[0029] Among them, the reference numerals are as follows:

[0030] 1 - agitator; 2 - top tank; 3 - bottom discharge pipe; 4 - slurry supply pipe; 5 - filter; 51 - bracket; 61 - filter screen; 62 - first end cover; 63 - second end cover; 631 - insertion hole; 64 - chamber; 65 - stud; 66 - first nut; 71 - connecting rod; 72 - roller member; 721 - roller; 722 - needle; 723 - boss; 8 - support frame; 81 - support plate; 82 - support foot; 83 - positioning hole; 84 - through hole; 85 - enclosing plate; 91 - drive assembly; 92 - transmission shaft. Detailed implementation manners

[0031] In this article, unless otherwise specified, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "top", "bottom", etc. are used to indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation and operation, so it cannot be understood as a limitation of the present utility model.

[0032] The following will describe the detailed implementation manners of the present utility model in more detail with reference to the schematic diagrams. According to the following description, the advantages and features of the present utility model will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.

[0033] Figure 3 is a schematic diagram of the filter device of the atomizer top tank of an embodiment of the present utility model, Figure 4 is a schematic diagram of the filter member, cleaning assembly and transmission shaft of the filter device of the atomizer top tank of an embodiment of the present utility model, Figure 5 is Figure 4 View from direction A of. Please refer to Figure 3 , Figure 4 and Figure 5, an embodiment of the present utility model provides an atomizer top tank filtering device, which includes a filtering member, a cleaning component, a driving component 91, a transmission shaft 92, and a slurry supply pipe 4.

[0034] The filtering member includes a cylindrical filtering chamber. The side wall of the filtering chamber includes a cylindrical filter screen 61. Further, the filtering member further includes a first end cover 62 and a second end cover 63. The first end cover 62 and the second end cover 63 can be steel plates, for example. The first end cover 62 and the second end cover 63 respectively cover two axial ends of the filter screen 61 and form a filtering chamber 64. The cleaning component is located in the filtering chamber 64. Further, referring to Figure 6 , the edge of the first end cover 62 extends radially out of the filter screen 61, and the edge of the second end cover 63 extends radially out of the filter screen 61. The edges of the first end cover 62 and the second end cover 63 are connected by at least two studs 65 and a first nut 66 (the studs 65 and the first nut 66 are not shown in Figure 4 ), so as to fix the filter screen 61 between the first end cover 62 and the second end cover 63. It can be understood that four first nuts 66 are connected to each stud 65. Two of the first nuts 66 are located on both sides of the first end cover 62, and the other two first nuts 66 are located on both sides of the second end cover 63, so as to fix the positions of the first end cover 62 and the second end cover 63 and fix the filter screen 61 between the first end cover 62 and the second end cover 63. This way of fixing the filter screen 61 is simple to install and disassemble, and is convenient for taking out the cleaning component from the filtering chamber 64. In some other embodiments, the filter screen 61, the first end cover 62, and the second end cover 63 can also be integrated, or filter holes can also be formed on the first end cover 62 and the second end cover 63, so that the first end cover 62 and the second end cover 63 also have a filtering function.

[0035] The cleaning component can rotate in the filtering chamber 64 and can move along the inner wall of the filter screen 61 to clean the filter screen 61. Further, the cleaning component includes a connecting rod 71 and a roller member 72. The connecting rod 71 is connected to the roller member 72. The connecting rod 71 can rotate around the central axis of the filtering chamber 64, so as to drive the roller member 72 to move along the inner wall of the filter screen 61 to clean the filter screen 61. Further, the connecting rod 71 is connected to the transmission shaft 92, and the transmission shaft 92 drives the connecting rod 71 to rotate. The roller member 72 includes a roller 721 and a plurality of needle-like objects 722. The roller 721 can rotate around its own central axis. The plurality of needle-like objects 722 are arranged on the outer circumferential surface of the roller 721, and the outer diameter of the needle-like objects 722 is smaller than the aperture of the filter holes of the filter screen 61. For example, the needle-like objects 722 can be steel needles, and the outer diameter of the steel needles can be 1 mm. The needle-like objects 722 can be inserted into the filter holes to clean the impurities blocking the filter holes. The needle-like objects 722 inserted into the filter holes can be flush with the outer wall of the filter screen 61 or can extend out of the outer wall of the filter screen 61. Figure 4Only some of the needles 722 are drawn for illustration purposes. Preferably, there are gaps between the connecting rod 71 and the first end cap 62, between the connecting rod 71 and the second end cap 63, and between the connecting rod 71 and the filter screen 61 to prevent friction between the cleaning assembly and the filtering member when the cleaning assembly rotates. For example, the gap between the connecting rod 71 and the second end cap 63 can be 10 mm.

[0036] For example, the number of connecting rods 71 can be two, and each of the two shaft ends of the drum member 72 is connected to a connecting rod 71. In this embodiment, each of the two shaft ends of the drum 721 axially extends a boss 723, and the boss 723 is inserted into a through hole provided on the connecting rod 71 and is in sliding fit with the through hole, so that the drum 721 can rotate around its own central axis. In some other embodiments, the drum 721 can include a drum body and a drum shaft, the drum shaft is fixedly connected to the connecting rod 71, and the drum body can rotate around the drum shaft. It can be understood that needles 722 extending radially are provided on the entire outer circumferential surface of the drum 721. Preferably, the number of cleaning assemblies is at least two to improve the cleaning efficiency, and the cleaning assemblies are evenly distributed along the circumferential direction of the filtering chamber, that is, the drum members 72 are evenly distributed along the inner wall of the filter screen 61 to balance the force on the filter screen 61 and prevent the filter screen 61 from deforming. Taking two cleaning assemblies as an example in this embodiment, at this time, the connecting rods 71 of the two cleaning assemblies are on the same straight line, and the connecting rods 71 of the two cleaning assemblies at the same end of the drum member 72 can be integrally provided, and reference can be made to Figure 4 and Figure 5 . The connecting rod 71 and the transmission shaft 92 can be connected by a second nut. For example, the transmission shaft 92 passes through the connecting rod 71, the second nut is threadedly connected to the transmission shaft 92, and a second nut is provided on each of the axial two sides of the connecting rod 71 along the transmission shaft 92, so as to lock the connecting rod 71 on the transmission shaft 92. When installing the cleaning assembly, first insert the two shaft ends of the drum 721 into the through holes of the two connecting rods 71 respectively. After adjusting the position, lock the second nut to connect the cleaning assembly and the transmission shaft 92 together, and then put the cleaning assembly into the filtering chamber 64 of the filtering member, and then fasten the first end cap 62 and the second end cap 63 with the stud 65 and the first nut 66.

[0037] One end of the transmission shaft 92 is connected to the driving assembly, and the other end of the transmission shaft 92 passes through the first end cap 62 and is connected to the cleaning assembly to drive the cleaning assembly to rotate. The transmission shaft 92 is coaxial with the filter screen 61, and the transmission shaft 92 and the first end cap 62 are in clearance fit to prevent friction between the transmission shaft 92 and the first end cap 62 when the transmission shaft 92 rotates, and the clearance is smaller than the aperture of the filter holes of the filter screen 61 to prevent particulate impurities from flowing into the filtration chamber 64. The aperture of the filter holes can be, for example, 3 mm. Further, the driving assembly 91 includes a motor and a speed reducer, and the speed reducer is connected to the transmission shaft 92. The speed reducer is provided to make the rotation speed of the transmission shaft 92 slower and reduce the impact on the filtration member. The driving assembly can be installed on the top tank 2, for example.

[0038] The slurry supply pipe 4 communicates with the filtration chamber 64 of the filtration member to discharge the filtered slurry from the top tank 2 and send it to the atomizer. It can be understood that the second end cap 63 is provided with an insertion hole 631 for inserting the slurry supply pipe 4. There can be no gap or a gap can be left between the slurry supply pipe 4 and the insertion hole 631, but the gap between the slurry supply pipe 4 and the insertion hole 631 needs to be smaller than the aperture of the filter holes of the filter screen 61. Preferably, the gap between the slurry supply pipe 4 and the insertion hole 631 is less than 1 mm, which not only facilitates the installation of the slurry supply pipe 4 but also prevents particulate impurities from flowing into the filtration chamber 64 and then into the slurry supply pipe 4.

[0039] Preferably, reference can be made to Figure 3 、 Figure 7 、 Figure 8 and Figure 9 The filtering device includes a support frame 8 for placing at the bottom of the top tank 2 and supporting the filtering member. The support frame 8 includes a support plate 81 and a plurality of support feet 82. All the support feet 82 are connected to the surface on the same side of the support plate 81, that is, all the support feet 82 are connected to the side of the support plate 81 facing the ground to support the support plate 81. The support plate 81 is provided with positioning holes 83 corresponding to the stud bolts 65 one by one and a through hole 84 for the slurry supply pipe 4 to pass through. With such a setting, the stud bolts 65 of the filtering member are inserted into the positioning holes 83 of the support frame 8 to realize the positioning of the filtering member, preventing the cleaning assembly from rotating and driving the filtering member to rotate. At the same time, this way of inserting the stud bolts 65 into the positioning holes 83 also facilitates the removal of the filtering member from the top tank 2. And, compared with the filter 5 in the prior art, the support frame 8 raises the height position of the filtering member. For example, the distance between the filtering member and the bottom of the top tank 2 can be 180 mm - 220 mm, for example, it can be 200 mm. And many particulate impurities sink to the bottom of the top tank 2. After the height position of the filtering member is raised, the particulate impurities adsorbed on the filter screen 61 are reduced, ensuring the filtration volume of the slurry. Further, the support frame 8 further includes a surrounding plate 85 extending upward from the edge of the support plate 81. The surrounding plate 85 is cylindrical, and the surrounding plate 85 and the support plate 81 form a placement groove for placing the filtering member.

[0040] The slurry supply pipe 4 is provided with a regulating valve 41 with adjustable opening degree to regulate the slurry flow rate in the slurry supply pipe 4. Generally, a stirrer 1 is provided in the top tank 2 to stir the slurry in the top tank 2 evenly. The top tank 2 is also provided with a bottom drain pipe 3 for emptying the top tank 2.

[0041] The steps for cleaning the filter screen 61 of the present utility model are as follows: The driving assembly 91 drives the cleaning assembly to rotate in the filter chamber 64 of the filtering member through the transmission shaft 92, so that the roller 721 makes a circular motion along the inner wall of the filter screen 61. At the same time, the roller 721 also rotates around its own central axis. The needle-like objects 722 on the roller 721 insert into the filter holes of the filter screen 61 to clean the impurity particles blocking the filter holes and the viscous slurry adhering to the filter screen 61.

[0042] It can be understood that the atomizer top tank filtering device may further include a controller. The controller is connected to the driving assembly and can control the operation, stop or rotation speed of the driving assembly. During the production process, in cooperation with the controller, the filtering member can be cleaned automatically for a long time to avoid the filter screen being blocked and affecting the slurry supply volume.

[0043] With the above configuration, the slurry in the top tank flows into the slurry supply pipe 4 after being filtered by the filtering member, and then flows into the atomizer through the slurry supply pipe 4. And a cleaning assembly is provided. The driving assembly 91 drives the cleaning assembly to rotate in the filter chamber 64 of the filtering member through the transmission shaft 92, so that the cleaning assembly can make a circular motion along the inner wall of the filter screen 61, thereby cleaning the filter screen 61. In summary, the present utility model can clean the blocked filter holes on the filter screen 61 through the cleaning assembly, greatly reducing the situation that the slurry flow rate supplied to the atomizer is reduced due to the blockage of the filter screen 61. The filtering amount of the slurry is significantly improved, manual cleaning or replacement of the filter is avoided, the labor intensity of the staff is reduced, the long-term stable slurry supply is ensured, the normal operation of the atomizer is ensured, the up-to-standard emission of flue gas is maintained, and the normal progress of flue gas desulfurization is ensured. The present utility model also has the characteristics of simple structure, convenient maintenance, high reliability and low input cost.

[0044] It should be noted that the references to "one embodiment", "embodiment", "specific embodiment", "some embodiments", etc. in the specification only indicate that the described embodiments may include specific features, structures or characteristics. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, whether or not it is explicitly described, implementing such a feature, structure or characteristic in combination with other embodiments is within the knowledge scope of those skilled in the relevant art.

[0045] It should be noted that the embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0046] It should also be noted that although the present utility model has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present utility model. For any person skilled in the art, without departing from the scope of the technical solution of the present utility model, many possible changes and modifications can be made to the technical solution of the present utility model by using the technical content disclosed above, or modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still belong to the scope of protection of the technical solution of the present utility model.

[0047] It should also be understood that unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are only used to distinguish the various components, elements, steps, etc. in the specification, rather than to represent the logical relationship or sequential relationship, etc. between the various components, elements, steps.

[0048] In addition, it should also be recognized that the terms described herein are only used to describe specific embodiments and are not used to limit the scope of the present utility model. It must be noted that the singular forms "a" and "an" used herein and in the appended claims include plural references unless the context clearly indicates the contrary. For example, the reference to "a step" or "a device" means a reference to one or more steps or devices, and may include secondary steps and secondary devices. All conjunctions used should be understood in the broadest sense. Also, the word "or" should be understood to have the definition of logical "or", rather than the definition of logical "exclusive or", unless the context clearly indicates the contrary. In addition, the implementation of the methods and / or devices in the embodiments of the present utility model may include performing the selected tasks manually, automatically, or in combination.

Claims

1. An atomizer top tank filtering device, characterized in that, Comprising: A filtering member, including a cylindrical filtering chamber, and the filtering chamber includes a cylindrical filter screen; A cleaning assembly, located inside the filtering chamber and rotatable in the filtering chamber to move along the inner wall of the filter screen so as to clean the filter screen; A slurry supply pipe, communicating the filtering chamber and the atomizer, for sending the filtered slurry into the atomizer.

2. The atomizer top tank filtering device according to claim 1, wherein, The cleaning assembly includes a connecting rod and a roller member, the connecting rod is connected to the roller member, and the connecting rod can rotate around the central axis of the filtering chamber, thereby driving the roller member to move along the inner wall of the filter screen to clean the filter screen.

3. The atomizer top tank filtering device according to claim 2, wherein, The roller member includes a roller and a plurality of needle-like objects, the plurality of needle-like objects are arranged on the outer circumferential surface of the roller, and the roller can rotate around its own central axis, so that the needle-like objects are inserted into the filter holes of the filter screen to clean the filter screen.

4. The atomizer top tank filtering device according to claim 1, characterized in that, The number of the cleaning assemblies is at least two, and the cleaning assemblies are evenly distributed along the circumferential direction of the filtering chamber.

5. The atomizer top tank filtering device according to claim 1, characterized in that, The filtering device includes a driving assembly for driving the cleaning assembly to rotate, and the driving assembly includes a motor and a speed reducer.

6. The atomizer top tank filtering device according to claim 1, characterized in that, The filtering member includes a first end cover and a second end cover, the first end cover and the second end cover respectively cover two axial ends of the filter screen to form the filtering chamber, and an insertion hole is provided on the second end cover, and the slurry supply pipe is inserted into the insertion hole to communicate with the filtering chamber.

7. The atomizer top tank filtering device according to claim 6, characterized in that The filtering device includes a transmission shaft, the transmission shaft passes through the first end cover and is connected to the cleaning assembly for driving the cleaning assembly to rotate, the transmission shaft is in clearance fit with the first end cover, and the clearance is smaller than the aperture of the filter hole of the filter screen.

8. The atomizer top tank filtering device according to claim 6, characterized in that, The edge of the first end cover extends radially out of the filter screen, the edge of the second end cover extends radially out of the filter screen, and the edges of the first end cover and the second end cover are connected by at least two stud bolts and nuts, so as to fix the filter screen between the first end cover and the second end cover.

9. The atomizer top tank filtering device according to claim 8, wherein, The filtering device includes a support frame for placing at the bottom of the top tank and supporting the filtering member, the support frame includes a support plate and a plurality of support feet, and the support plate is provided with positioning holes corresponding to the stud bolts one by one and through holes for the slurry supply pipe to pass through.

10. The atomizer top tank filtering device according to claim 1, characterized in that, A regulating valve with adjustable opening degree is provided on the slurry supply pipe.

Images