Exhaust filter device for fluidized bed

Abstract

The utility model discloses a kind of exhaust filtering devices for fluidized bed, including box and filter cartridge element, flange mounting disc is fixedly installed at box top, flange mounting disc central connection has exhaust pipe mouth, exhaust pipe mouth connects the air cavity in box, several filter cartridge elements are installed in box, filter cartridge element uses bottom air intake and is communicated air cavity, deformation driving element and filter cartridge element are connected one-to-one, filter cartridge element of the utility model is installed upside down, and by air intake from below, so that gas enters air cavity exhaust from inside to outside, powder is blocked in the inside of filter cartridge element, the filter cartridge element of the utility model design can meet gas filtration demand, and can be conveniently connected deformation driving element, the mesh surface of filter cartridge element can be deformed by deformation driving element, to shake off the powder in mesh surface inside, the utility model can realize the self-cleaning operation of filter cartridge element without stopping machine, can effectively guarantee the stable and smooth progress of fluidization production.

Description

Technical Field

[0001] This utility model relates to the technical field of powder material surface modification equipment, and more specifically, to an exhaust filtration device for fluidized beds. Background Technology

[0002] Fluidized bed reactors are important equipment used in the production of powder material surface modification. They utilize gas to suspend and move powder materials within a container, and then atomize and spray a polymer solution to form an ultra-thin coating on the powder material surface, achieving the purpose of powder surface modification. During fluidized bed operation, gas is continuously discharged, and this discharged gas contains some powder material. Therefore, the discharged gas needs to be treated by a filtration device to prevent dust discharge. As production progresses, an adsorbed powder layer forms on the surface of the filter screen. The presence of this powder layer affects gas discharge efficiency and filtration quality. Powder production companies have found that cleaning the filter screen surface of existing fluidized bed equipment is difficult and generally requires shutdown. Therefore, users are considering designing and improving the structure of the existing fluidized bed equipment's filter device to meet production needs. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an exhaust filtration device for fluidized beds. The filter element of this invention is installed upside down and the air enters from the bottom. In this way, the gas enters the air chamber from the inside to the outside and is exhausted. The powder is blocked inside the filter element. The filter element design of this invention can not only meet the gas filtration requirements, but also facilitate the connection of the deformation drive element. The deformation drive element can deform the mesh surface of the filter element to shake off the powder inside the mesh surface. This invention can achieve self-cleaning operation of the filter element without stopping the machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An exhaust filtration device for a fluidized bed includes a housing and filter cartridge elements. A flange mounting plate is fixedly installed on the top of the housing, and an exhaust pipe is vertically connected to the center of the flange mounting plate. An air chamber is provided inside the housing, and the exhaust pipe extends to connect to the air chamber. Several filter cartridge elements are installed in the housing, and the filter cartridge elements adopt bottom air intake and are connected to the air chamber. Several deformation driving elements are installed in the housing, and the deformation driving elements are connected to the filter cartridge elements in a one-to-one correspondence.

[0006] Furthermore, the filter element is installed inside the air chamber, and the bottom surface of the housing has several air inlets, with one filter element installed at each air inlet position.

[0007] Furthermore, the filter element includes a first cover and a second cover, with a mesh surface connected and installed between the first cover and the second cover. The filter element is installed upside down, with the first cover connected to the air inlet and communicating with the air inlet.

[0008] Furthermore, the mesh surface is made of a woven fabric with deformability.

[0009] Furthermore, the deformation driving element includes a push cylinder, which is inverted and mounted on the housing, with the piston rod end of the push cylinder extending into the air chamber and connected to the second cylinder cover.

[0010] Furthermore, the deformation driving element also includes a deformation guiding assembly, which includes a linkage rod and a guide post. The two linkage rods are symmetrically and laterally connected to the side of the second cylinder cover, and the two guide posts are symmetrically and vertically installed on both sides of the filter cartridge element. The linkage rod and the guide post are connected in a one-to-one correspondence, and the linkage rod is adapted to be inserted into the guide post.

[0011] Furthermore, the diameter of the second cylinder cover is smaller than that of the first cylinder cover, and the mesh surface is designed as a cone shape that is smaller at the top and larger at the bottom.

[0012] Furthermore, an indicator light is installed on the side of each of the push cylinders.

[0013] The beneficial effects of this utility model are:

[0014] The filter cartridge element of this invention is installed upside down with air intake from below. In this way, the gas enters the air chamber from the inside out and exhausts, while the powder is blocked inside the filter cartridge element. The design of the filter cartridge element of this invention can not only meet the gas filtration requirements, but also facilitate the connection of the deformation drive element. The deformation drive element can deform the mesh surface of the filter cartridge element to shake off the powder inside the mesh surface. This invention can achieve the self-cleaning operation of the filter cartridge element without stopping the machine, which can effectively ensure the stable and smooth operation of fluidized production. Attached Figure Description

[0015] Figure 1 This is a three-dimensional external structural diagram of an exhaust filtration device for a fluidized bed in this embodiment;

[0016] Figure 2 This is a cross-sectional view of an exhaust filtration device for a fluidized bed in this embodiment.

[0017] Reference numerals: housing 1, air chamber 11, air inlet 12, flange mounting plate 2, exhaust port 21, filter element 3, first cylinder cover 31, second cylinder cover 32, mesh surface 33, deformation guide assembly 34, linkage rod 341, guide column 342, deformation drive element 4, push cylinder 41, indicator light 42. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 and Figure 2 The fluidized bed exhaust filtration device shown includes a housing 1 and filter elements 3. A flange mounting plate 2 is fixedly installed on the top of the housing 1, which seals the device to the exhaust port of the fluidized bed equipment. The exhaust port is generally located at the top of the fluidized bed equipment. The housing 1 is inserted into the exhaust port. An exhaust pipe port 21 is vertically connected to the center of the flange mounting plate 2. A gas chamber 11 is provided inside the housing 1. The exhaust pipe port 21 extends and connects to the gas chamber 11. Gas in the fluidized bed chamber first rises into the gas chamber 11 and is then discharged through the exhaust pipe port 21 (which connects to an external exhaust pipe). Several filter elements 3 are installed in the housing 1. The filter elements 3 use bottom air intake and are connected to the gas chamber 11. Before entering the gas chamber 11, the gas passes through the filter elements 3. Under the filtration effect of the filter elements 3, the powder mixed in the gas is filtered and blocked, such as... Figure 2As shown, the filter element 3 of this utility model is installed in the air chamber 11. Several air inlets 12 are provided on the bottom surface of the housing 1, serving as channels for gas entry. Each air inlet 12 corresponds to the installation of a filter element 3. The filter element 3 filters the incoming gas. To ensure filtration efficiency, multiple filter elements 3 are arranged in a circumferentially ordered manner. The filter element 3 of this utility model includes a first cover 31 and a second cover 32. A mesh surface 33 is connected and installed between the first cover 31 and the second cover 32. The filter element 3 is installed upside down, with the entire mesh surface 33 located within the air chamber 11. After filtration, the gas directly enters the air chamber 11. The first cover 31 has an opening and connects to the air inlet 12, allowing the gas to enter the filter element 3 from bottom to top. Under the action of the filtered gas, the powder in the gas is blocked inside the mesh surface 33. With filtration time... As the filter cartridge element 33 lengthens, a powder layer will be adsorbed and formed on the inner side, which will cause a decrease in air passage efficiency and a decrease in filtration quality. In order to change this situation, this utility model installs several deformation driving elements 4 on the housing 1. The deformation driving elements 4 are connected to the filter cartridge element 3 in a one-to-one correspondence. The deformation driving elements 4 cause the mesh surface 33 of the filter cartridge element 3 to deform, thereby shaking off and removing the powder on the mesh surface 33, so that the mesh surface 33 can be restored to unobstructed flow. Since this utility model adopts a special air intake scheme for the filter cartridge element 3, the cleaning operation of the mesh surface 33 can be carried out in real time without disassembling the filter device. In this way, this utility model can self-clean the mesh surface 33 as needed without interrupting fluidized production, ensuring the stable and smooth operation of fluidized production. The mesh surface 33 of this utility model is made of a textile fabric with deformation capability (such as non-woven fabric) to match the deformation and cleaning requirements of the mesh surface 33.

[0020] like Figure 1 and Figure 2As shown, the deformation driving element 4 of this utility model includes a push cylinder 41, which is installed upside down on the housing 1. The piston rod end of the push cylinder 41 extends into the air chamber 11 and is connected to the second cylinder cover 32. After the piston rod of the push cylinder 41 extends and retracts, it can drive the movement of the second cylinder cover 32. With the first cylinder cover 31 fixedly installed, the deformation of the mesh surface 33 can be achieved, thereby shaking off and removing the powder on the mesh surface 33. The push cylinder 41 used in this utility model is an electric push cylinder. An indicator light 42 is installed on the side of each push cylinder 41, and the circuit of the indicator light 42 is connected to the push cylinder 41. The indicator light 42 can be set to multiple colors, such as red, green and yellow. When the green light is on, the filter cartridge element 3 is in its initial state and is performing normal fluidized exhaust filtration. When the yellow light is on, the filter cartridge element 3 is in a deformation self-cleaning state. Each deformation self-cleaning is performed at a frequency of 3-5 piston rod extensions and retractions of the push cylinder 41. When the red light is on, it indicates that the push cylinder 41 has failed and needs to be repaired. In this utility model, after the piston rod of the push cylinder 41 retracts, the second cylinder cover 32 of the filter cartridge element 3 rises to its upper limit. At this time, the mesh surface 33 is fully unfolded and can perform normal fluidized exhaust filtration.

[0021] To control the direction of deformation movement of filter element 3, such as Figure 2 As shown, this utility model further includes a deformation guide assembly 34 for the deformation driving element 4. The deformation guide assembly 34 includes a linkage rod 341 and a guide post 342. The two linkage rods 341 are symmetrically and laterally connected to the side of the second cylinder cover 32. The linkage rods 341 move up and down together with the second cylinder cover 32. The two guide posts 342 are symmetrically and vertically installed on both sides of the filter cartridge element 3. The linkage rods 341 and guide posts 342 are connected one-to-one. The linkage rods 341 are adapted to be inserted into the guide posts 342. The guide posts 342 play a role in guiding the movement. Through the cooperation of the linkage rods 341 and guide posts 342, the second cylinder cover 32 moves vertically up and down, and the mesh surface 33 deforms vertically. Figure 2 As shown, the diameter of the second cover 32 is smaller than that of the first cover 31, so that the mesh surface 33 forms a cone shape that is smaller at the top and larger at the bottom. The advantage of this design is that it increases the effective filtration area of ​​the mesh surface 33 and allows the shaken powder to fall towards the air inlet 12 (this occurs when there is no gas exhaust. When there is gas exhaust, the deformation will only damage the powder layer of the mesh surface 33 and restore the normal filtration effect for a period of time. Therefore, the mesh surface 33 needs to be cleaned regularly. According to the company's experience, it is generally better to start it every 15 minutes).

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An exhaust gas filtering device for fluidized beds, characterized in that, The device includes a housing (1) and filter cartridge elements (3). A flange mounting plate (2) is fixedly installed on the top of the housing (1). An exhaust pipe port (21) is vertically connected to the center of the flange mounting plate (2). An air chamber (11) is provided inside the housing (1). The exhaust pipe port (21) extends and connects to the air chamber (11). Several filter cartridge elements (3) are installed in the housing (1). The filter cartridge elements (3) adopt bottom air intake. The filter cartridge elements (3) are connected to the air chamber (11). Several deformation driving elements (4) are installed in the housing (1). The deformation driving elements (4) are connected to the filter cartridge elements (3) in a one-to-one correspondence.

2. The exhaust gas filter for fluidized beds according to claim 1, characterized in that The filter element (3) is installed in the air chamber (11). The bottom surface of the box (1) has several air inlets (12), and each air inlet (12) is equipped with a filter element (3).

3. The exhaust gas filter for fluidized beds according to claim 1, characterized in that The filter element (3) includes a first cover (31) and a second cover (32). A mesh (33) is connected and installed between the first cover (31) and the second cover (32). The filter element (3) is installed upside down. The first cover (31) is connected to the air inlet (12). The first cover (31) communicates with the air inlet (12).

4. The exhaust gas filter for fluidized beds according to claim 3, characterized in that The mesh (33) is made of a textile fabric with deformability.

5. The exhaust gas filtration device for a fluidized bed according to claim 3, characterized in that, The deformation driving element (4) includes a push cylinder (41), which is installed upside down on the housing (1). The piston rod end of the push cylinder (41) extends into the air chamber (11) and is connected to the second cylinder cover (32).

6. The exhaust gas filter for fluidized beds according to claim 3, characterized in that The deformation driving element (4) further includes a deformation guiding assembly (34), which includes a linkage rod (341) and a guide post (342). The two linkage rods (341) are symmetrically and laterally connected to the side of the second cylinder cover (32), and the two guide posts (342) are symmetrically and vertically installed on both sides of the filter element (3). The linkage rod (341) and the guide post (342) are connected one-to-one, and the linkage rod (341) is adapted to be inserted into the guide post (342).

7. The exhaust gas filter for fluidized beds according to claim 3, characterized in that The diameter of the second cylinder cover (32) is smaller than that of the first cylinder cover (31), and the mesh surface (33) is set as a cone shape with a smaller top and a larger bottom.

8. The exhaust gas filtration device for fluidized beds of claim 5, wherein, Each of the push cylinders (41) is equipped with an indicator light (42) on its side.

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