Catalytic bed of flame-retardant waste gas treatment equipment

Abstract

The utility model discloses a catalytic bed of flame-retardant waste gas treatment equipment, which belongs to the technical field of waste gas treatment, and is characterized by comprising a catalytic bed body, the top of the catalytic bed body is communicated with a gas inlet pipe, and the right side of the gas inlet pipe is communicated with a filter box; the top of the right side of the catalytic bed body is fixedly connected with a supporting plate used in cooperation with the filter box, the bottom of the filter box is fixedly connected with the top of the supporting plate, the right side of the filter box communicates with a waste gas conveying pipe, and the left side of the inner wall of the filter box is fixedly connected with a filter screen plate. The inner cavity of the filter box is provided with a removing assembly matched with the filter screen plate for use, and a collecting box is inserted into the bottom of the inner cavity of the filter box, so that the problems that an existing catalytic bed is generally lack of a structure for filtering, collecting and removing impurities in waste gas, the waste gas contains impurity particles, and the impurities enter the catalytic bed; the catalytic effect on the waste gas can be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and particularly relates to a catalytic bed of a flame-retardant waste gas treatment device. Background Art

[0002] The main function of the catalytic bed is to convert harmful substances in the waste gas into harmless substances through the action of a catalyst, so as to achieve the purpose of purifying the waste gas.

[0003] Currently, for the Chinese patent with the publication number of CN220186831U, this utility model relates to the technical field of catalytic combustion bed equipment, specifically to a catalytic combustion bed, which includes a cabin assembly and a catalytic assembly. The cabin assembly includes a reaction cabin, the upper end of the reaction cabin is connected with an air inlet, the inner wall of the reaction cabin is connected with a heating top plate, a heating bottom plate is arranged directly below the heating top plate, the inner wall of the lower part of the air inlet is connected with a plurality of rectangular flow guiding plates, the catalytic assembly includes a catalytic box, the lower end of the catalytic box is connected with a flow reducing plate, and one end of the flow reducing plate far away from the catalytic box is connected with a heat exchange box. The air whose flow rate is slowed down by the heating top plate and the inner groove of the top plate encounters the obstruction of the heating bottom plate during the continuous flowing process, and then the air flow rate slows down and flows downward through the inner groove of the bottom plate. Through the setting of the heating bottom plate, the air can be intercepted between the heating top plate and the heating bottom plate, thereby ensuring the effect of heating the air.

[0004] When purifying waste gas, a catalytic bed is usually used. The existing catalytic bed usually lacks a structure for filtering, collecting and cleaning impurities in the waste gas. Since the waste gas contains impurity particles, when the impurities enter the catalytic bed, it will affect the catalytic effect on the waste gas. Content of the Utility Model

[0005] The utility model provides a catalytic bed of a flame-retardant waste gas treatment device, aiming to solve the problem that the existing catalytic bed usually lacks a structure for filtering, collecting and cleaning impurities in the waste gas. Since the waste gas contains impurity particles, when the impurities enter the catalytic bed, it will affect the catalytic effect on the waste gas.

[0006] The present utility model is realized as follows. A catalytic bed of a flame-retardant waste gas treatment device includes a catalytic bed body. An air inlet pipe is connected to the top of the catalytic bed body. A filter box is connected to the right side of the air inlet pipe. A support plate for cooperating with the filter box is fixedly connected to the top of the right side of the catalytic bed body. The bottom of the filter box is fixedly connected to the top of the support plate. An exhaust gas transmission pipe is connected to the right side of the filter box. A filter screen plate is fixedly connected to the left side of the inner wall of the filter box. A cleaning component for cooperating with the filter screen plate is arranged in the inner cavity of the filter box. A collection box is inserted into the bottom of the inner cavity of the filter box. A pull-out groove for cooperating with the collection box is formed in the bottom of the front side of the filter box. A fixing component for cooperating with the collection box is arranged on the front side of the filter box.

[0007] The cleaning component includes a motor, a first transmission rod, a connecting strip, a second transmission rod, a transmission plate, a fixing plate, a limiting rod and a cleaning brush. The bottom of the motor is fixedly connected to the top of the filter box. The top of the first transmission rod is fixedly connected to the output end of the motor. The bottom of the first transmission rod penetrates to the inner cavity of the filter box. The left side of the top of the connecting strip is fixedly connected to the bottom of the first transmission rod. The top of the second transmission rod is fixedly connected to the right side of the bottom of the connecting strip. The second transmission rod is located on the right side of the inner cavity of the transmission plate. The top of the right side of the fixing plate is fixedly connected to the left side of the transmission plate. The front side of the limiting rod is fixedly connected to the front side of the inner wall of the filter box. The rear side of the limiting rod penetrates through the fixing plate and is fixedly connected to the rear side of the inner wall of the filter box. The right side of the cleaning brush is fixedly connected to the left side of the fixing plate. The left side of the cleaning brush is in close contact with the right side of the filter screen plate.

[0008] In order to achieve the effect of fixing the collection box, as a preferred embodiment of the catalytic bed of the flame-retardant waste gas treatment device of the present utility model, the fixing component includes a fixing shell, a pull ring, a fixing rod, a spring, a limiting plate, a fixing block and a fixing hole. The rear side of the fixing shell is fixedly connected to the front side of the filter box. The top of the fixing rod is fixedly connected to the bottom of the pull ring. The bottom of the fixing rod penetrates through the fixing shell and extends into the inner cavity of the fixing hole. The spring and the limiting plate are sequentially sleeved on the surface of the fixing rod. The top and the bottom of the spring are respectively fixedly connected to the top of the inner wall of the fixing shell and the top of the limiting plate. The inner wall of the limiting plate is fixedly connected to the surface of the fixing rod. The surface of the limiting plate is slidably connected to the inner wall of the fixing shell. The rear side of the fixing block is fixedly connected to the top of the front side of the collection box. The fixing hole is formed in the top of the fixing block.

[0009] In order to achieve the effect of increasing the support stability of the support plate for the filter box, as a preferred embodiment of the catalytic bed of the flame-retardant waste gas treatment device of the present utility model, a reinforcing rib is fixedly connected to the right side of the bottom of the support plate. The side of the reinforcing rib close to the catalytic bed body is fixedly connected to the catalytic bed body.

[0010] In order to achieve the effect of sealing the connection between the collection box and the drawer slot to prevent waste gas leakage, as an optimization of the catalytic bed of a flame-retardant waste gas treatment device of the present utility model, a sealing gasket is fixedly connected to the inner wall of the drawer slot, and the side of the sealing gasket close to the collection box is in close contact with the collection box.

[0011] In order to achieve the effect of facilitating the extraction of the collection box from the filtration box, as an optimization of the catalytic bed of a flame-retardant waste gas treatment device of the present utility model, a drawer handle is fixedly connected to the front side of the collection box, and anti-slip patterns are provided on the surface of the drawer handle.

[0012] In order to achieve the effect of enabling the first transmission rod to penetrate into the filtration box and facilitating rotation through a bearing, as an optimization of the catalytic bed of a flame-retardant waste gas treatment device of the present utility model, a movable hole adapted to the first transmission rod is provided at the top of the filtration box, and the surface of the first transmission rod is rotatably connected to the inner wall of the movable hole through a bearing.

[0013] In order to achieve the effect of enabling the fixing plate to slide on the surface of the limiting rod, as an optimization of the catalytic bed of a flame-retardant waste gas treatment device of the present utility model, sliding holes adapted to the limiting rod are provided at the top and bottom of the front side of the fixing plate, and the surface of the limiting rod is slidably connected to the inner wall of the sliding hole.

[0014] In order to achieve the effect of enabling the fixing rod to move up and down in the inner cavity of the fixing shell, as an optimization of the catalytic bed of a flame-retardant waste gas treatment device of the present utility model, through holes adapted to the fixing rod are provided at the top and bottom of the fixing shell, and the surface of the fixing rod is slidably connected to the inner wall of the through hole.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] The catalytic bed of the flame-retardant waste gas treatment device is provided with a catalytic bed body, an air inlet pipe, a filter box, a support plate, a waste gas transmission pipe, a filter screen plate, a cleaning component, a collection box, a draw groove and a fixing component. When in use, the collection box is inserted into the inner cavity of the filter box through the draw groove, and then the position of the collection box is fixed by the fixing component. Then, waste gas is transmitted into the filter box through the waste gas transmission pipe. At this time, the filter screen plate can filter out impurity particles in the waste gas, achieving the effect of preventing impurity particles in the waste gas from entering the inside of the catalytic bed body. Then, the filtered waste gas enters the inside of the catalytic bed body through the air inlet pipe for catalytic work. And the cleaning component can be started. The cleaning component can clean the impurity particles adsorbed on the surface of the filter screen plate, thereby achieving the effect of preventing the impurity particles from blocking the filter screen plate. And the impurity particles can be collected by the collection box. When it is necessary to clean the impurity particles in the collection box, the fixing of the collection box can be cancelled by pulling the fixing component, and then the collection box can be directly pulled out of the filter box to clean the impurity particles, which is relatively convenient. Description of the Drawings

[0017] Figure 1 It is the overall structure diagram of the catalytic bed of the flame-retardant waste gas treatment device of the present utility model;

[0018] Figure 2 It is the structure diagram of another perspective after the filter box of the present utility model is sectioned;

[0019] Figure 3 It is the structure diagram of the filter box of the present utility model;

[0020] Figure 4 It is the structure diagram of the cleaning component of the present utility model;

[0021] Figure 5 It is the structure diagram of the fixing plate and the cleaning brush of the present utility model;

[0022] Figure 6 It is the split structure diagram after the fixing component of the present utility model is sectioned.

[0023] In the figure, 1, catalytic bed body; 2, air inlet pipe; 3, filter box; 4, support plate; 5, waste gas transmission pipe; 6, filter screen plate; 7, cleaning component; 701, motor; 702, first transmission rod; 703, connecting bar; 704, second transmission rod; 705, transmission plate; 706, fixing plate; 707, limiting rod; 708, cleaning brush; 8, collection box; 9, draw groove; 10, fixing component; 1001, fixing shell; 1002, pull ring; 1003, fixing rod; 1004, spring; 1005, limiting plate; 1006, fixing block; 1007, fixing hole; 11, reinforcing rib; 12, sealing gasket; 13, pull handle; 14, moving hole; 15, sliding hole; 16, through hole. Detailed implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0026] Please refer to Figure 1-6 , the present utility model provides a technical solution: a catalytic bed of a flame-retardant waste gas treatment device, which includes a catalytic bed body 1. An air inlet pipe 2 is communicated with the top of the catalytic bed body 1. A filter box 3 is communicated with the right side of the air inlet pipe 2. A support plate 4 used in cooperation with the filter box 3 is fixedly connected to the top of the right side of the catalytic bed body 1. The bottom of the filter box 3 is fixedly connected to the top of the support plate 4. An exhaust gas transmission pipe 5 is communicated with the right side of the filter box 3. A filter screen plate 6 is fixedly connected to the left side of the inner wall of the filter box 3. A cleaning assembly 7 used in cooperation with the filter screen plate 6 is arranged in the inner cavity of the filter box 3. A collection box 8 is inserted into the bottom of the inner cavity of the filter box 3. A pull-out groove 9 used in cooperation with the collection box 8 is formed in the bottom of the front side of the filter box 3. A fixing assembly 10 used in cooperation with the collection box 8 is arranged on the front side of the filter box 3;

[0027] The cleaning component 7 includes a motor 701, a first transmission rod 702, a connecting bar 703, a second transmission rod 704, a transmission plate 705, a fixing plate 706, a limiting rod 707 and a cleaning brush 708. The bottom of the motor 701 is fixedly connected to the top of the filter box 3. The top of the first transmission rod 702 is fixedly connected to the output end of the motor 701. The bottom of the first transmission rod 702 penetrates through to the inner cavity of the filter box 3. The left side of the top of the connecting bar 703 is fixedly connected to the bottom of the first transmission rod 702. The top of the second transmission rod 704 is fixedly connected to the right side of the bottom of the connecting bar 703. The second transmission rod 704 is located on the right side inside the transmission plate 705. The top of the right side of the fixing plate 706 is fixedly connected to the left side of the transmission plate 705. The front side of the limiting rod 707 is fixedly connected to the front side of the inner wall of the filter box 3. The rear side of the limiting rod 707 penetrates through the fixing plate 706 and is fixedly connected to the rear side of the inner wall of the filter box 3. The right side of the cleaning brush 708 is fixedly connected to the left side of the fixing plate 706. The left side of the cleaning brush 708 is in close contact with the right side of the filter screen plate 6.

[0028] In this embodiment: By providing the catalytic bed body 1, the intake pipe 2, the filter box 3, the support plate 4, the exhaust gas transmission pipe 5, the filter screen plate 6, the cleaning component 7, the collection box 8, the draw slot 9 and the fixing component 10, during use, the collection box 8 is inserted into the inner cavity of the filter box 3 through the draw slot 9, and then the position of the collection box 8 is fixed by the fixing component 10. Then, the exhaust gas is transmitted into the filter box 3 through the exhaust gas transmission pipe 5. At this time, the filter screen plate 6 can filter the impurity particles in the exhaust gas, achieving the effect of preventing the impurity particles in the exhaust gas from entering the inside of the catalytic bed body 1. Then, the filtered exhaust gas enters the inside of the catalytic bed body 1 through the intake pipe 2 for catalytic work, and the cleaning component 7 can be started. The cleaning component 7 can remove the impurity particles adsorbed on the surface of the filter screen plate 6, thereby achieving the effect of preventing the impurity particles from blocking the filter screen plate 6, and the impurity particles can be collected by the collection box 8. When it is necessary to clean the impurity particles in the collection box 8, the fixing of the collection box 8 can be cancelled by pulling the fixing component 10, and then the collection box 8 can be directly pulled out of the filter box 3 to clean the impurity particles, which is relatively convenient.

[0029] As a technical optimization solution of the present utility model, the fixing assembly 10 includes a fixing shell 1001, a pull ring 1002, a fixing rod 1003, a spring 1004, a limiting plate 1005, a fixing block 1006 and a fixing hole 1007. The rear side of the fixing shell 1001 is fixedly connected to the front side of the filter box 3. The top of the fixing rod 1003 is fixedly connected to the bottom of the pull ring 1002. The bottom of the fixing rod 1003 passes through the fixing shell 1001 and extends into the inner cavity of the fixing hole 1007. The spring 1004 and the limiting plate 1005 are sequentially sleeved on the surface of the fixing rod 1003. The top and bottom of the spring 1004 are respectively fixedly connected to the top of the inner wall of the fixing shell 1001 and the top of the limiting plate 1005. The inner wall of the limiting plate 1005 is fixedly connected to the surface of the fixing rod 1003. The surface of the limiting plate 1005 is slidably connected to the inner wall of the fixing shell 1001. The rear side of the fixing block 1006 is fixedly connected to the top of the front side of the collection box 8. The fixing hole 1007 is opened at the top of the fixing block 1006.

[0030] In this embodiment: By providing the fixing shell 1001, the pull ring 1002, the fixing rod 1003, the spring 1004, the limiting plate 1005, the fixing block 1006 and the fixing hole 1007, during use, the limiting plate 1005 can be extruded by the spring force of the spring 1004, so that the limiting plate 1005 drives the fixing rod 1003 to insert into the fixing hole 1007 of the fixing block 1006, thereby achieving the effect of fixing the collection box 8. When canceling the fixation of the collection box 8, the pull ring 1002 can be pulled. The pull ring 1002 drives the fixing rod 1003 to move. While the fixing rod 1003 moves, it drives the limiting plate 1005 to extrude the spring 1004, so that the fixing rod 1003 moves out of the inner cavity of the fixing hole 1007 to cancel the fixation of the collection box 8.

[0031] As a technical optimization solution of the present utility model, a reinforcing rib 11 is fixedly connected to the right side of the bottom of the support plate 4. The side of the reinforcing rib 11 close to the catalytic bed body 1 is fixedly connected to the catalytic bed body 1.

[0032] In this embodiment: By providing the reinforcing rib 11, the support stability of the support plate 4 for the filter box 3 can be increased.

[0033] As a technical optimization solution of the present utility model, a sealing gasket 12 is fixedly connected to the inner wall of the draw groove 9. The side of the sealing gasket 12 close to the collection box 8 is in close contact with the collection box 8.

[0034] In this embodiment: By providing the sealing gasket 12, the connection between the collection box 8 and the draw groove 9 can be sealed to prevent waste gas leakage.

[0035] As a technical optimization solution of the present utility model, a draw handle 13 is fixedly connected to the front side of the collection box 8, and anti-slip patterns are provided on the surface of the draw handle 13.

[0036] In this embodiment, by providing a pull handle 13, the collection box 8 can be conveniently pulled out from the filter box 3.

[0037] As a technical optimization solution of the present utility model, a movable hole 14 for cooperating with the first transmission rod 702 is provided at the top of the filter box 3, and the surface of the first transmission rod 702 is rotatably connected to the inner wall of the movable hole 14 through a bearing.

[0038] In this embodiment, by providing the movable hole 14, the first transmission rod 702 can penetrate into the filter box 3 and rotate conveniently through the bearing.

[0039] As a technical optimization solution of the present utility model, sliding holes 15 for cooperating with the limiting rods 707 are provided at the top and bottom of the front side of the fixing plate 706, and the surface of the limiting rod 707 is slidably connected to the inner wall of the sliding hole 15.

[0040] In this embodiment, by providing the sliding holes 15, the fixing plate 706 can slide on the surface of the limiting rods 707.

[0041] As a technical optimization solution of the present utility model, through holes 16 for cooperating with the fixing rods 1003 are provided at the top and bottom of the fixed shell 1001, and the surface of the fixing rod 1003 is slidably connected to the inner wall of the through hole 16.

[0042] In this embodiment, by providing the through holes 16, the fixing rods 1003 can move up and down in the inner cavity of the fixed shell 1001.

[0043] Working principle: First, pull the pull ring 1002. The pull ring 1002 drives the fixed rod 1003 to move to a suitable position. When the fixed rod 1003 moves, it drives the limit plate 1005 to squeeze the spring 1004. Then, insert the collection box 8 into the inner cavity of the filter box 3 through the draw slot 9. Then release the pull ring 1002. The force released after the spring 1004 is compressed drives the limit plate 1005 to move in the reverse direction, so that the limit plate 1005 drives the fixed rod 1003 to insert into the fixing hole 1007 of the fixing block 1006 to fix the position of the collection box 8. Then, transmit the waste gas into the filter box 3 through the waste gas transmission pipe 5. At this time, the filter screen plate 6 can filter the impurity particles in the waste gas, achieving the effect of preventing the impurity particles in the waste gas from entering the inside of the catalytic bed body 1. Then, the filtered waste gas enters the inside of the catalytic bed body 1 through the intake pipe 2 for catalytic work. And the motor 701 can be started. The motor 701 drives the first transmission rod 702 to rotate. The first transmission rod 702 drives the connecting bar 703 to rotate. The connecting bar 703 drives the second transmission rod 704 to rotate in a circular motion. When the second transmission rod 704 rotates in a circular motion, it generates forward and backward thrusts on the transmission plate 705, so that the transmission plate 705 and the fixing plate 706 slide back and forth on the surface of the limit rod 707. The fixing plate 706 drives the cleaning brush 708 to move back and forth. By the back-and-forth movement of the cleaning brush 708, the impurity particles adsorbed on the surface of the filter screen plate 6 can be removed, so as to achieve the effect of preventing the impurity particles from blocking the filter screen plate 6. And the impurity particles can be collected by the collection box 8. When it is necessary to clean the impurity particles in the collection box 8, the pull ring 1002 can be pulled to make the pull ring 1002 drive the fixed rod 1003 to move out of the inner cavity of the fixing hole 1007 to cancel the fixation of the collection box 8. Then, the collection box 8 can be directly pulled out of the filter box 3 to clean the impurity particles, which is relatively convenient.

[0044] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A catalytic bed of a flame-retardant waste gas treatment device, comprising a catalytic bed body (1), characterized in that: An air inlet pipe (2) is connected to the top of the catalytic bed body (1). A filter box (3) is connected to the right side of the air inlet pipe (2). A support plate (4) used in cooperation with the filter box (3) is fixedly connected to the top on the right side of the catalytic bed body (1). The bottom of the filter box (3) is fixedly connected to the top of the support plate (4). An exhaust gas transmission pipe (5) is connected to the right side of the filter box (3). A filter screen plate (6) is fixedly connected to the left side of the inner wall of the filter box (3). A cleaning assembly (7) used in cooperation with the filter screen plate (6) is arranged in the inner cavity of the filter box (3). A collection box (8) is inserted into the bottom of the inner cavity of the filter box (3). A pull-out groove (9) used in cooperation with the collection box (8) is formed in the bottom on the front side of the filter box (3). A fixing assembly (10) used in cooperation with the collection box (8) is arranged on the front side of the filter box (3); The cleaning assembly (7) includes a motor (701), a first transmission rod (702), a connecting strip (703), a second transmission rod (704), a transmission plate (705), a fixing plate (706), a limiting rod (707) and a cleaning brush (708). The bottom of the motor (701) is fixedly connected to the top of the filter box (3). The top of the first transmission rod (702) is fixedly connected to the output end of the motor (701). The bottom of the first transmission rod (702) penetrates through to the inner cavity of the filter box (3). The left side of the top of the connecting strip (703) is fixedly connected to the bottom of the first transmission rod (702). The top of the second transmission rod (704) is fixedly connected to the right side of the bottom of the connecting strip (703). The second transmission rod (704) is located on the right side in the inner cavity of the transmission plate (705). The top of the right side of the fixing plate (706) is fixedly connected to the left side of the transmission plate (705). The front side of the limiting rod (707) is fixedly connected to the front side of the inner wall of the filter box (3). The rear side of the limiting rod (707) penetrates through the fixing plate (706) and is fixedly connected to the rear side of the inner wall of the filter box (3). The right side of the cleaning brush (708) is fixedly connected to the left side of the fixing plate (706). The left side of the cleaning brush (708) is in close contact with the right side of the filter screen plate (6).

2. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, characterized in that: The fixing component (10) includes a fixing shell (1001), a pull ring (1002), a fixing rod (1003), a spring (1004), a limiting plate (1005), a fixing block (1006) and a fixing hole (1007). The rear side of the fixing shell (1001) is fixedly connected to the front side of the filter box (3). The top of the fixing rod (1003) is fixedly connected to the bottom of the pull ring (1002). The bottom of the fixing rod (1003) penetrates through the fixing shell (1001) and extends into the inner cavity of the fixing hole (1007). The spring (1004) and the limiting plate (1005) are sequentially sleeved on the surface of the fixing rod (1003). The top and bottom of the spring (1004) are respectively fixedly connected to the top of the inner wall of the fixing shell (1001) and the top of the limiting plate (1005). The inner wall of the limiting plate (1005) is fixedly connected to the surface of the fixing rod (1003). The surface of the limiting plate (1005) is slidably connected to the inner wall of the fixing shell (1001). The rear side of the fixing block (1006) is fixedly connected to the top of the front side of the collection box (8). The fixing hole (1007) is opened at the top of the fixing block (1006).

3. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, characterized in that: A reinforcing rib (11) is fixedly connected to the right side of the bottom of the support plate (4). The side of the reinforcing rib (11) close to the catalytic bed body (1) is fixedly connected to the catalytic bed body (1).

4. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, characterized in that: A sealing gasket (12) is fixedly connected to the inner wall of the draw slot (9). The side of the sealing gasket (12) close to the collection box (8) is in close contact with the collection box (8).

5. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, characterized in that: A draw handle (13) is fixedly connected to the front side of the collection box (8), and anti-slip patterns are provided on the surface of the draw handle (13).

6. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, wherein: An activity hole (14) for cooperating with the first transmission rod (702) is opened at the top of the filter box (3). The surface of the first transmission rod (702) is rotatably connected to the inner wall of the activity hole (14) through a bearing.

7. The catalytic bed of a flame-retardant waste gas treatment device according to claim 1, characterized in that: Sliding holes (15) for cooperating with the limiting rods (707) are opened at the top and bottom of the front side of the fixing plate (706). The surface of the limiting rods (707) is slidably connected to the inner wall of the sliding holes (15).

8. The catalytic bed of a flame-retardant waste gas treatment device according to claim 2, characterized in that: Through holes (16) for cooperating with the fixing rod (1003) are opened at the top and bottom of the fixing shell (1001). The surface of the fixing rod (1003) is slidably connected to the inner wall of the through holes (16).

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