A chemical protection filter absorber

Abstract

The present invention provides a chemical defense filter absorber, which relates to the field of chemical defense equipment. It includes a shell assembly, a filter element assembly, and an impact-proof assembly. The impact-proof assembly is arranged on the windward side of the shell assembly. The impact-proof assembly includes a receiving tube fixedly installed inside the shell body. The windward side of the receiving tube is provided with a V-shaped piece, and the V-shaped piece is fixedly installed in the shell body. The receiving tube is provided with a windward guide portion on the side close to the V-shaped piece. A sound-absorbing component is symmetrically fixedly connected in the receiving tube, and an expansion portion is provided on the leeward side of the sound-absorbing component. The sound-absorbing component and the receiving tube are both provided with mutually connected diversion holes, and an airflow channel is reserved between the two sound-absorbing components. The provided impact-proof assembly can utilize the V-shaped piece and the receiving tube to divert and then merge the airflow, so that the two airflows collide with each other, thereby slowing down the gas flow rate and gas pressure, providing protection for the filter element assembly, and avoiding damage to the filter element.

Description

Technical Field

[0001] The invention relates to the technical field of chemical defense equipment, in particular to a chemical defense filter absorber. Background Art

[0002] The chemical filter absorber is a device used to filter and absorb harmful substances in the air. This device is usually used in the ventilation system of civil air defense projects, basements, parking lots, stations, docks and other places to protect people from breathing normally.

[0003] In the related technology, such as a chemical defense filter absorber with announcement number: CN110787586B, it includes an air inlet diffuser, a first frame, a second frame, an air outlet diffuser, and a first filter layer and a second filter layer respectively arranged in the first frame and the second frame in sequence along the air flow direction. The first frame and the second frame are detachably connected and the end walls facing each other are butt-jointed.

[0004] The outdoor airflow enters directly through the air inlet diffuser. If the chemical defense filter absorber is installed in the civil air defense project, when encountering an explosion, the outside air will expand rapidly and enter the chemical defense filter absorber at a high flow rate and high pressure. The impact force generated by the airflow will directly act on the filter element, causing the filter element to deform and be damaged. Moreover, due to the increase in air flow velocity, at the same filtration distance, the time that the gas is filtered by the activated carbon filter element is shortened, and the filtration effect is reduced, which is not conducive to ensuring the breathing safety of personnel in the civil air defense project. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a chemical defense filter absorber, which solves the problem that when encountering an external explosion, the explosive airflow directly impacts the filter element, causing damage to the filter element and a decrease in the filtering and adsorption effect, which is not conducive to ensuring the breathing safety of personnel in civil air defense projects.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a chemical protection filter absorber, comprising:

[0009] A housing assembly, the housing assembly comprising a housing body, to which a maintenance plate is detachably connected;

[0010] A filter element assembly, wherein the filter element assembly is disposed in the housing body, and the filter element assembly comprises a maintenance frame, in which a filter screen and an activated carbon filter element are installed;

[0011] An anti-impact component, the anti-impact component is arranged on the windward side of the shell component, the anti-impact component includes a accommodating cylinder fixedly installed inside the shell body, a V-shaped piece is arranged on the windward side of the accommodating cylinder, the V-shaped piece is fixedly installed in the shell body, a windward guide portion is arranged on the side of the accommodating cylinder close to the V-shaped piece, a sound absorbing piece is symmetrically fixedly connected in the accommodating cylinder, an expansion portion is arranged on the leeward side of the sound absorbing piece, the sound absorbing piece and the accommodating cylinder are both provided with mutually connected diverter holes, an air flow channel is reserved between the two sound absorbing pieces, a short diverter hook piece and a long diverter hook piece are respectively fixedly connected on the side of the two sound absorbing pieces close to the air flow channel, and a strip hole is arranged on one side wall of the short diverter hook piece and the long diverter hook piece close to the air flow channel;

[0012] The middle part of the V-shaped part is threadedly connected with a connecting pipe, and the windward end of the connecting pipe is fixedly connected with a windshield and an adjustment nut, and the adjustment nut is located at the leeward center of the windshield. The connecting pipe is fixedly connected with a support block, and a spring is sleeved on the connecting pipe, and the spring is located between the support block and the V-shaped part. The leeward end of the connecting pipe is fixedly connected with a diverter shell. By setting up the anti-impact component, the V-shaped part and the containing cylinder can be used to divert and then merge the airflow, so that the two airflows collide with each other, thereby slowing down the gas flow rate and gas pressure, providing protection for the filter element assembly, and avoiding damage to the filter element. The sound absorbing component and the diverter shell can further divert and collide, and at the same time, provide a sound-absorbing effect to increase the comfort of use.

[0013] Preferably, both ends of the shell body are arranged in an expansion shape, and both ends of the shell body are also fixedly connected with connecting flanges, and the inner wall of the shell body is fixedly connected with a limit block for limiting the position of the filter element assembly.

[0014] Preferably, the maintenance frame includes a base and an upper cover, the base is provided with a slot for installing a filter screen and an activated carbon filter element, a mounting rod is fixedly connected to the corner of the base, the mounting rod passes through the upper cover and is fixed by a nut, the upper cover is provided with a holding groove for holding, the filter screen is located on the outside of the activated carbon filter element, the base is provided with a dust collecting chamber, and the dust collecting chamber is located below the filter screen near the windward side.

[0015] Preferably, it also includes a cleaning component, which includes a rotating seat fixedly installed in the middle of the V-shaped part, a driving shaft is rotatably connected to the rotating seat, the windward end of the driving shaft is fixedly connected to a fan blade, and the leeward end of the driving shaft is fixedly connected to a cleaning brush, the bristle part of the cleaning brush is in contact with the windward side of the filter, the fan blade is located on the windward side of the V-shaped part, and the driving shaft passes through a connecting pipe and a diverter shell.

[0016] Preferably, a leeward concave surface is provided on the leeward side of the V-shaped member, and the leeward concave surface is arc-shaped. The cross-sectional shape of the windward guide portion is U-shaped, and the U-shaped opening side of the windward guide portion is arranged toward the leeward concave surface. The connecting pipe passes between the short diverter hook and the long diverter hook, and the cross-sectional shapes of the short diverter hook and the long diverter hook are both J-shaped.

[0017] Preferably, the cross-sectional shape of the diverter shell is convex, and the diameter of the diverter shell is the same as the inner diameter of the accommodating cylinder.

[0018] Preferably, a gap H1 is reserved between the outer surface of the accommodating tube and the outer shell body, and a gap H2 is reserved between the diverter shell and the leeward side opening of the accommodating tube.

[0019] Preferably, the wind shield is located on the inner side of the rotating seat, and an adjustment space is reserved between the wind shield and the rotating seat.

[0020] (III) Beneficial effects

[0021] The present invention provides a chemical protection filter absorber having the following beneficial effects:

[0022] 1. The present invention can use the V-shaped parts and the containing tube to divert and merge the airflow through the anti-impact component, so that the two airflows collide with each other, thereby reducing the gas flow rate and gas pressure, providing protection for the filter element assembly, avoiding damage to the filter element, and the sound-absorbing parts and the diversion shell can further divert and collide, and at the same time, provide a sound-absorbing effect to increase the comfort of use.

[0023] 2. The wind shield and the adjusting nut of the present invention can change the gap H2 reserved between the splitter shell and the leeward opening of the containing tube, so as to adapt to airflow impacts of different intensities and have strong applicability.

[0024] 3. The cleaning component provided in the present invention can clean the filter on the windward side, thereby increasing the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall stereogram of the present invention;

[0026] Figure 2 It is an overall cross-sectional view of the present invention;

[0027] Figure 3 is a three-dimensional diagram of the filter element assembly of the present invention;

[0028] Figure 4 A three-dimensional diagram of the anti-impact assembly and the cleaning assembly of the present invention;

[0029] Figure 5A three-dimensional diagram of the anti-impact assembly and the cleaning assembly of the half-sectioned accommodating tube of the present invention;

[0030] Figure 6 A partial stereoscopic view of the anti-impact assembly and the cleaning assembly of the present invention;

[0031] Figure 7 A three-dimensional diagram of a half-section containing cylinder and its internal components of the present invention;

[0032] Figure 8 A three-dimensional diagram showing the connection state of the V-shaped member and the connecting pipe part of the present invention;

[0033] Fig. 9 A cross-sectional view of the anti-impact assembly and the cleaning assembly of the present invention;

[0034] Fig.10 A top view of the present invention with half of the housing assembly removed;

[0035] Fig.11 A three-dimensional diagram of a cleaning assembly of the present invention;

[0036] Fig.12 It is a schematic diagram of the airflow direction of the present invention.

[0037] Among them, 1. shell assembly; 2. filter element assembly; 3. anti-impact assembly; 4. cleaning assembly; 101. shell body; 102. maintenance plate; 201. base; 202. card slot; 203. dust collection chamber; 204. installation rod; 205. filter screen; 206. activated carbon filter element; 207. upper cover; 208. holding slot; 301. receiving tube; 3011. windward guide part; 302. diversion hole; 30 3. Sound absorbing part; 3031. Expansion part; 304. Diverter shell; 305. V-shaped part; 3051. Rotating seat; 3052. Leeward concave surface; 306. Wind shield; 3061. Adjusting nut; 307. Spring; 308. Support block; 309. Short diverter hook; 310. Long diverter hook; 311. Connecting pipe; 312. Strip hole; 401. Fan blade; 402. Drive shaft; 403. Cleaning brush. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-Figure 12 As shown, an embodiment of the present invention provides a chemical protection filter absorber, comprising:

[0040] The housing assembly 1 comprises a housing body 101, a maintenance plate 102 is detachably connected to the housing body 101, both ends of the housing body 101 are arranged in an expanded shape, both ends of the housing body 101 are also fixedly connected with connecting flanges, and a limit block for limiting the position of the filter element assembly 2 is fixedly connected to the inner wall of the housing body 101;

[0041] refer to Figure 1 , Figure 2 The outer shell body 101 is used to provide space for air flow and provide installation positions for the filter element assembly 2, the anti-impact assembly 3, and the cleaning assembly 4. The connecting flange is used for connection. The limit block is used to ensure the accuracy of the installation position of the filter element assembly 2. By removing the maintenance plate 102, the filter element assembly 2 can be taken out and replaced.

[0042] The filter element assembly 2 is arranged in the housing body 101, and the filter element assembly 2 includes a maintenance frame, in which a filter screen 205 and an activated carbon filter element 206 are installed, and the maintenance frame includes a base 201 and an upper cover 207. The base 201 is provided with a slot 202 for installing the filter screen 205 and the activated carbon filter element 206, and a mounting rod 204 is fixedly connected at the corner of the base 201, and the mounting rod 204 passes through the upper cover 207 and is fixed by a nut, and a holding groove 208 for holding is provided on the upper cover 207, and the filter screen 205 is located on the outside of the activated carbon filter element 206, and a dust collecting chamber 203 is provided on the base 201, and the dust collecting chamber 203 is located below the filter screen 205 near the windward side;

[0043] refer to Figure 2 , Figure 3 The maintenance frame facilitates the removal of the filter 205 and the activated carbon filter element 206. By twisting the nut on the mounting rod 204, the upper cover 207 can be separated from the mounting rod 204, which facilitates the replacement of the filter 205 and the activated carbon filter element 206. The dust collecting chamber 203 is used to collect dust that falls from the filter 205 to avoid dust splashing.

[0044] The anti-impact component 3 is arranged on the windward side of the shell component 1. The anti-impact component 3 includes a accommodating tube 301 fixedly installed inside the shell body 101. A V-shaped member 305 is provided on the windward side of the accommodating tube 301. The V-shaped member 305 is fixedly installed in the shell body 101. A windward guide portion 3011 is provided on the side of the accommodating tube 301 close to the V-shaped member 305. A sound absorbing member 303 is symmetrically fixedly connected in the accommodating tube 301. An expansion portion 3031 is provided on the leeward side of the sound absorbing member 303. The sound absorbing member 303 and the accommodating tube 301 are both provided with mutually connected diversion holes 302. An air flow channel is reserved between the two sound absorbing members 303. A short flow-dividing hook 309 and a long flow-dividing hook 310 are fixedly connected to one side of the sound piece 303 close to the air flow passage, and a strip hole 312 is provided on one side wall of the short flow-dividing hook 309 and the long flow-dividing hook 310 close to the air flow passage. A leeward concave surface 3052 is provided on the leeward side of the V-shaped piece 305, and the leeward concave surface 3052 is in an arc shape. The cross-sectional shape of the windward guide portion 3011 is in a U shape, and the U-shaped opening side of the windward guide portion 3011 is arranged toward the leeward concave surface 3052. The connecting pipe 311 passes between the short flow-dividing hook 309 and the long flow-dividing hook 310, and the cross-sectional shapes of the short flow-dividing hook 309 and the long flow-dividing hook 310 are both in a J shape.

[0045] refer to Figure 3 , Figure 4 , Figure 7 , Fig. 9 , Fig.12 The V-shaped member 305 is used to resist the impact of the airflow and divert the airflow to both sides. The diverted airflow is converged from both sides to the middle under the action of the windward guide part 3011, forming an airflow collision, thereby slowing down the flow rate of the airflow, and then flows into the airflow channel between the sound absorbing members 303. The inflowing airflow is dispersed again under the action of the short diversion hook 309 and the long diversion hook 310. Part of the airflow continues to flow along the airflow channel, and the other part of the airflow enters the diversion hole 302 of the sound absorbing member 303. , and the strip hole 312 can also be used for air circulation, so that the airflow entering the short diverter hook 309 and the long diverter hook 310 can fully return to the airflow channel, and the sound absorbing component 303 can disperse and silence the incoming airflow, and then flow into the shell body 101. The end of the short diverter hook 309 and the long diverter hook 310 close to the guide windward part 3011 is inclined close to one side of the airflow channel, which can increase the opening size of the airflow flowing into the short diverter hook 309 and the long diverter hook 310.

[0046] A connecting pipe 311 is threadedly connected to the middle part of the V-shaped member 305, and a windward end of the connecting pipe 311 is fixedly connected with a wind shield 306 and an adjusting nut 3061. The wind shield 306 is located on the inner side of the rotating seat 3051, and an adjustment space is reserved between the wind shield 306 and the rotating seat 3051. The adjusting nut 3061 is located at the leeward center of the wind shield 306. A supporting block 308 is fixedly connected to the connecting pipe 311, and a spring 307 is sleeved on the connecting pipe 311, and the spring 307 is located between the supporting block 308 and the V-shaped member 305. A diverter shell 304 is fixedly connected to the leeward end of the connecting pipe 311. The cross-sectional shape of the diverter shell 304 is convex, and the diameter of the diverter shell 304 is the same as the inner diameter of the accommodating tube 301. A gap H1 is reserved between the outer surface of the accommodating tube 301 and the outer shell body 101, and a gap H2 is reserved between the diverter shell 304 and the leeward opening of the accommodating tube 301.

[0047] refer to Figure 6 , Figure 3 , Figure 4 , Figure 7 , Fig. 9 , Figure 8 , Fig.10 , Fig.12 , the airflow flowing in along the airflow channel will encounter the obstruction of the diverter shell 304 and be diverted, and the airflow at the diverter will collide with the airflow flowing out of the diverter hole 302, forming a second collision, further slowing down the flow rate of the airflow, and when it is necessary to adjust the position of the diverter shell 304, the adjusting nut 3061 is screwed by a tool, and the adjusting nut 3061 drives the connecting pipe 311 to rotate, and the connecting pipe 311 drives the diverter shell 304 to move. When the diverter shell 304 is close to the sound absorbing member 303, the gap H2 between the diverter shell 304 and the leeward side opening of the accommodating tube 301 becomes smaller, and the diverter shell 304 is moved. The airflow discharge speed between the flow shell 304 and the sound absorbing component 303 becomes slower, the effect of slowing down the flow velocity of the airflow is better, and the impact force of the airflow on the diverter shell 304 becomes greater. Conversely, when the diverter shell 304 is away from the sound absorbing component 303, the gap H2 between the diverter shell 304 and the leeward opening of the accommodating tube 301 becomes larger, the airflow discharge speed between the diverter shell 304 and the sound absorbing component 303 becomes faster, and the effect of slowing down the flow velocity of the airflow becomes worse. Therefore, the appropriate value of H2 can be selected according to the design requirements. In this embodiment, the selected values ​​of H2 and H1 are the same.

[0048] It also includes a cleaning component 4, which includes a rotating seat 3051 fixedly installed in the middle of the V-shaped member 305, and a driving shaft 402 is rotatably connected to the rotating seat 3051. The windward end of the driving shaft 402 is fixedly connected to the fan blade 401, and the leeward end of the driving shaft 402 is fixedly connected to the cleaning brush 403. The bristle part of the cleaning brush 403 is in contact with the windward side of the filter 205, the fan blade 401 is located on the windward side of the V-shaped member 305, and the driving shaft 402 passes through the connecting pipe 311 and the diverter shell 304.

[0049] refer to Fig. 9 , Fig.10 , Fig.11 When a strong external airflow acts on the fan blade 401, the fan blade 401 is pushed by the airflow, the fan blade 401 drives the driving shaft 402, and the driving shaft 402 drives the cleaning brush 403 to rotate. The cleaning brush 403 cleans the filter screen 205 on the windward side, so that the dust falls along the filter screen 205 and falls into the dust collecting chamber 203, which can extend the service life of the filter screen 205.

[0050] Working principle: When in use, outdoor air flows into the housing body 101, and the V-shaped member 305 is used to resist the impact of the air flow and divert the air flow to both sides. The diverted air flow, under the action of the windward guide portion 3011, converges from both sides to the middle to form an air flow counterattack, thereby slowing down the flow rate of the air flow, and then flows into the air flow channel between the sound absorbing members 303. The inflowing air flow is dispersed again under the action of the short diversion hook 309 and the long diversion hook 310. Part of the air flow continues to flow along the air flow channel, and the other part of the air flow enters the diversion hole 302 of the sound absorbing member 303, and the strip hole 312 can also be used for air circulation, so that the air entering the short diversion hook 309 can be dispersed again. The airflow in the flow hook 309 and the long diverter hook 310 fully returns to the airflow channel, and the sound absorbing member 303 can disperse and silence the incoming airflow, and then flow into the shell body 101. The short diverter hook 309 and the long diverter hook 310 are arranged at an angle close to the airflow channel, which can increase the size of the opening where the airflow flows into the short diverter hook 309 and the long diverter hook 310. The airflow flowing in along the airflow channel will encounter the obstruction of the diverter shell 304 and be diverted. The airflow at the diverter will collide with the airflow flowing out of the diverter hole 302, forming a second collision, further slowing down the flow rate of the airflow.

[0051] When the position of the diverter shell 304 needs to be adjusted, the adjusting nut 3061 is screwed by a tool, and the adjusting nut 3061 drives the connecting pipe 311 to rotate, and the connecting pipe 311 drives the diverter shell 304 to move. When the diverter shell 304 is close to the sound absorbing member 303, the gap H2 between the diverter shell 304 and the leeward opening of the accommodating tube 301 becomes smaller, and the airflow discharge speed between the diverter shell 304 and the sound absorbing member 303 becomes slower, and the effect of slowing down the flow velocity of the airflow is better, and the impact force of the airflow on the diverter shell 304 becomes larger. On the contrary, when the diverter shell 304 is far away from the sound absorbing member 303, the gap H2 between the diverter shell 304 and the leeward opening of the accommodating tube 301 becomes larger, and the airflow discharge speed between the diverter shell 304 and the sound absorbing member 303 becomes faster, and the effect of slowing down the flow velocity of the airflow becomes worse. Therefore, the appropriate value of H2 can be selected according to the design requirements.

[0052] When the strong airflow from the outside acts on the fan blade 401, the fan blade 401 is pushed by the airflow, the fan blade 401 drives the driving shaft 402, and the driving shaft 402 drives the cleaning brush 403 to rotate, and the cleaning brush 403 cleans the filter screen 205 on the windward side, so that the dust falls along the filter screen 205 and falls into the dust collecting chamber 203, which can extend the service life of the filter screen 205;

[0053] When maintenance is needed, the maintenance plate 102 is removed and the maintenance frame portion is taken out. The maintenance frame facilitates the removal of the filter 205 and the activated carbon filter element 206. By twisting the nut on the mounting rod 204, the upper cover 207 can be separated from the mounting rod 204, making it convenient to replace the filter 205 and the activated carbon filter element 206. The dust collecting chamber 203 is used to collect dust that falls from the filter 205 to prevent dust from splashing.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical protection filter absorber, characterized in that: include: A housing assembly (1), the housing assembly (1) comprising a housing body (101), a maintenance plate (102) being detachably connected to the housing body (101); A filter element assembly (2), the filter element assembly (2) being arranged in the housing body (101), the filter element assembly (2) comprising a maintenance frame, a filter screen (205) and an activated carbon filter element (206) being installed in the maintenance frame; An impact-proof component (3), the impact-proof component (3) being arranged on the windward side of the housing component (1), the impact-proof component (3) comprising a receiving tube (301) fixedly mounted inside the housing body (101), a V-shaped member (305) being arranged on the windward side of the receiving tube (301), the V-shaped member (305) being fixedly mounted inside the housing body (101), a flow-guiding windward portion (3011) being arranged on a side of the receiving tube (301) close to the V-shaped member (305), a sound-absorbing member (3011) being symmetrically fixedly connected inside the receiving tube (301), and a sound-absorbing member (3011) being symmetrically fixedly connected inside the receiving tube (301). 3), an expansion portion (3031) is provided on the leeward side of the sound absorbing member (303), the sound absorbing member (303) and the accommodating tube (301) are both provided with mutually communicating flow diversion holes (302), an air flow channel is reserved between the two sound absorbing members (303), a short flow diversion hook (309) and a long flow diversion hook (310) are respectively fixedly connected to one side of the two sound absorbing members (303) close to the air flow channel, and a strip hole (312) is provided on one side wall of the short flow diversion hook (309) and the long flow diversion hook (310) close to the air flow channel; A connecting pipe (311) is threadedly connected to the middle portion of the V-shaped member (305); a windward end of the connecting pipe (311) is fixedly connected to a wind shield (306) and an adjusting nut (3061); the adjusting nut (3061) is located at the leeward center of the wind shield (306); a supporting block (308) is fixedly connected to the connecting pipe (311); a spring (307) is sleeved on the connecting pipe (311); the spring (307) is located between the supporting block (308) and the V-shaped member (305); and a flow divider shell (304) is fixedly connected to the leeward end of the connecting pipe (311).

2. The chemical protection filter absorber according to claim 1, characterized in that: Both ends of the shell body (101) are arranged in an expansion shape, and connecting flanges are fixedly connected to both ends of the shell body (101). A limit block for limiting the position of the filter element assembly (2) is fixedly connected to the inner wall of the shell body (101).

3. The chemical protection filter absorber according to claim 1, characterized in that: The maintenance frame comprises a base (201) and an upper cover (207); a slot (202) for mounting a filter screen (205) and an activated carbon filter element (206) is provided on the base (201); a mounting rod (204) is fixedly connected to a corner of the base (201); the mounting rod (204) passes through the upper cover (207) and is fixed by a nut; a holding slot (208) for holding is provided on the upper cover (207); the filter screen (205) is located outside the activated carbon filter element (206); a dust collecting chamber (203) is provided on the base (201); the dust collecting chamber (203) is located below the filter screen (205) on the windward side.

4. The chemical protection filter absorber according to claim 1, characterized in that: The cleaning assembly (4) further comprises a cleaning assembly (4), the cleaning assembly (4) comprising a rotating seat (3051) fixedly mounted on the middle part of the V-shaped member (305), the rotating seat (3051) being rotatably connected to a driving shaft (402), the windward end of the driving shaft (402) being fixedly connected to a fan blade (401), the leeward end of the driving shaft (402) being fixedly connected to a cleaning brush (403), the bristle portion of the cleaning brush (403) being in contact with the windward side surface of the filter screen (205), the fan blade (401) being located on the windward side of the V-shaped member (305), and the driving shaft (402) passing through a connecting pipe (311) and a flow divider shell (304).

5. The chemical protection filter absorber according to claim 1, characterized in that: The leeward side of the V-shaped member (305) is provided with a leeward concave surface (3052), the leeward concave surface (3052) is in an arc shape, the cross-sectional shape of the windward guide portion (3011) is in a U shape, the U-shaped opening side of the windward guide portion (3011) is arranged toward the leeward concave surface (3052), the connecting pipe (311) passes between the short diverter hook (309) and the long diverter hook (310), and the cross-sectional shapes of the short diverter hook (309) and the long diverter hook (310) are both in a J shape.

6. The chemical protection filter absorber according to claim 1, characterized in that: The cross-sectional shape of the flow-dividing shell (304) is convex, and the diameter of the flow-dividing shell (304) is the same as the inner diameter of the containing cylinder (301).

7. The chemical protection filter absorber according to claim 1, characterized in that: A gap H1 is reserved between the outer surface of the accommodating cylinder (301) and the outer shell body (101), and a gap H2 is reserved between the diversion shell (304) and the leeward side opening of the accommodating cylinder (301).

8. The chemical protection filter absorber according to claim 1, characterized in that: The wind shield (306) is located on the inner side of the rotating seat (3051), and an adjustment space is reserved between the wind shield (306) and the rotating seat (3051).

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