Device for detecting content of organic chlorine in air and use method

Abstract

The invention relates to the technical field of detection devices, and discloses a device for detecting the content of organic chlorine in air and a use method.The device comprises an ion chromatograph and an automatic sampler, a cleaning agent bottle and a purified water bottle are arranged on the top of the ion chromatograph, and a filtering sleeve barrel is arranged on the rear side of the automatic sampler; a supporting barrel cover is fixed to the top of the filtering sleeve barrel through bolts and used for sealing the filtering sleeve barrel, a rotating rod is rotationally arranged in the filtering sleeve barrel, and activated carbon fiber boards are fixed to the two sides of the rotating rod. A sample solvent generated after washing is poured into an automatic sample injector, a detector does not need to prepare a sample through multiple extraction procedures, the problem that to-be-detected air is inconvenient to treat when an existing device for detecting the content of the organic chlorine in the air is used is solved, and the use convenience of the device for detecting the content of the organic chlorine in the air is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and specifically to a detection device for organic chlorine content in air and a method for using the same. Background Art

[0002] Organochlorine is a class of organic compounds in which hydrogen atoms are replaced by chlorine atoms. It has the characteristics of stable chemical properties, high fat solubility and low water solubility. Therefore, it is easily absorbed and accumulated by organisms, posing a potential threat to the environment and human health. It is widely used in agriculture, industry and daily life, such as pesticides, solvents and plastics. In order to ensure the safety of the environment and human health, organochlorine detection is particularly important. The detection methods used include gas chromatography-mass spectrometry, ion chromatograph and electrochemical cell.

[0003] Among them, ion chromatographs are separated based on the reversible exchange between dissociable ions on ion exchange resins and solute ions with the same charge in the mobile phase and the difference in affinity of the analyte solute for the exchanger. At the same time, most ion chromatographs are equipped with automatic sample injectors. However, since organic chlorine in the air cannot be directly introduced into the ion chromatograph as a liquid sample for detection, the test personnel are required to process the air to be tested first, which makes the detection of organic chlorine content in the air very cumbersome and inconvenient during operation. Summary of the invention

[0004] In order to solve the problem that the existing device for detecting organic chlorine content in air has inconvenient processing of the air to be detected when in use, the present invention provides a device for detecting organic chlorine content in air and a method for using the same to solve the above problem.

[0005] To achieve the above object, the present invention provides the following technical solutions: A device for detecting organic chlorine content in air and a method for using the device include an ion chromatograph and an automatic sampler, wherein a detergent bottle and a purified water bottle are arranged on the top of the ion chromatograph, a filter barrel is arranged on the rear side of the automatic sampler, a support barrel cover is fixed to the top of the filter barrel by bolts for sealing the filter barrel, a rotating rod is rotatably arranged inside the filter barrel, activated carbon fiber plates are fixed on both sides of the rotating rod, a sample liquid tank is arranged below the filter barrel, an output end of the sample liquid tank is connected to an input end of the automatic sampler, an air intake interface pipe is fixed through one end of the filter barrel, a one-way air intake valve is arranged on the air intake interface pipe, a connecting cover is fixed through the other end of the middle part of the filter barrel, a one-way exhaust valve is arranged on the connecting cover, and a water inlet pipe is connected through the top of the sample liquid tank for adding sodium hydroxide solution.

[0006] Furthermore, a drain valve is connected through the bottom of the filter barrel, and the bottom of the drain valve is connected through the bottom of the sample liquid box for draining the sample liquid inside the filter barrel into the sample liquid box. The drain valve is located on the side of the rotating rod.

[0007] Furthermore, a servo motor is provided on the top surface of the support barrel cover, and the input end of the servo motor passes through the bottom surface of the support barrel cover and is fixed with a connecting rod, a limiting plug block is fixed on the bottom surface of the connecting rod, the rotating rod is sleeved on the connecting rod and the limiting plug block, another limiting plug block is fixed at the bottom of the rotating rod, a rotating sealing rod is sleeved on the limiting plug block, and the bottom of the rotating sealing rod is rotatably connected to the inside of the filter barrel.

[0008] Furthermore, a drain pipe is provided on one side of the sample liquid box close to the automatic sampler, the drain pipe is connected to the input end of the automatic sampler, and a three-way drain valve is provided on the drain pipe.

[0009] Furthermore, both sides of the activated carbon fiber board are slidably fitted with the inner wall of the filter sleeve barrel, the upper and lower ends of the activated carbon fiber board are respectively fitted with the bottom surface of the supporting barrel cover and the top surface of the rotating sealing rod, a rectangular groove cooperating with a limiting plug is provided inside the rotating rod, a rectangular slot cooperating with another limiting plug is provided at the center position of the top surface of the rotating sealing rod, and the rotating sealing rod is configured to be in a straight line shape cooperating with the rotating rod and the activated carbon fiber board.

[0010] Furthermore, a thread is provided on the outer surface of one end of the air inlet interface tube away from the filter sleeve barrel for connecting to a collection bottle containing air to be detected, and the air inlet interface tube is located on the same horizontal line as the center line of the connecting cover.

[0011] Furthermore, one end of the one-way exhaust valve away from the connecting cover is connected to the exhaust hood, a filter is fixed to the side of the exhaust hood away from the connecting cover, a support rod is symmetrically fixed to the bottom surface of the exhaust hood, one end of the bottom of the support rod away from the exhaust hood is fixed to the side wall of the sample liquid box, and the support rod is arranged to be L-shaped to cooperate with the exhaust hood and the sample liquid box.

[0012] Furthermore, an activated carbon filter plate is slidably inserted inside the exhaust hood, and a sealing cover plate is fixed to one end of the activated carbon filter plate extending to the top surface of the exhaust hood. The sealing cover plate is fixed to the top surface of the exhaust hood by bolts at the corner, and a handle is fixed in the middle of the top surface of the sealing cover plate.

[0013] Furthermore, a water inlet valve is provided on the water inlet pipe, and a through hole cooperating with the water inlet pipe is opened on the top of the support barrel cover.

[0014] Furthermore, a method for using a device for detecting organic chlorine content in air comprises the following steps: (A) Introduce the air to be tested into the filter sleeve and filter it; (A1) Screw the collection bottle containing the air to be tested onto the air inlet interface pipe and fix it. At the same time, close the water inlet valve, the drain valve and the three-way drain valve, open the one-way exhaust valve, and drive the rotating rod to rotate when the servo motor is running. The rotation of the rotating rod drives the activated carbon fiber board to rotate, so that the activated carbon fiber board is vertical between the one-way air inlet valve and the connecting cover; (A2), then open the one-way air inlet valve and the switch on the collection bottle, so that the air to be tested enters the filter sleeve barrel. After the air is filtered by the activated carbon fiber board, it is discharged from the filter sleeve barrel through the connecting cover and the one-way exhaust valve. At this time, the organic chlorine in the air is filtered on the activated carbon fiber board; (A3) The air discharged from the filter sleeve barrel enters the exhaust hood under the guidance of the connecting hood and the one-way exhaust valve, and is filtered through the activated carbon filter plate and the filter screen in sequence before being discharged; (B) washing the organic chlorine on the activated carbon fiber board; (B1) After the filtration is completed, close the air inlet interface pipe and the one-way exhaust valve, insert the pipe connected to the water outlet of the sodium hydroxide solution tank into the water inlet pipe, and open the water inlet valve; (B2) The sodium hydroxide solution enters the filter barrel, and the servo motor is running. The connecting rod and the limit plug block drive the rotating rod to rotate. When the rotating rod rotates, the activated carbon fiber board is driven to rotate, so that the activated carbon fiber board is stirred in the sodium hydroxide solution, and the organic chlorine filtered on the activated carbon fiber board is washed into the solution; (B3) After the flushing is completed, the drain valve is opened to allow the sample solution in the filter barrel to enter the sample liquid tank, and then the three-way drain valve is controlled to open so that the input end of the automatic sampler is connected with the inside of the sample liquid tank. The automatic sampler is operated to draw the sample solution into its input end through the drain pipe, and after being processed by the automatic sampler, it is injected into the ion chromatograph. Then the ion chromatograph is turned on and the ion chromatograph is controlled by a computer to run for detection; (C) Drain the residual liquid and clean it; (C1) After the test is completed, the three-way drain valve is controlled so that the three-way drain valve opens to another drain outlet, and the residual solution in the sample liquid tank is discharged; (C2) At the same time, clean water continues to be added through the water inlet pipe, and the servo motor continues to run to drive the activated carbon fiber plate to rotate, so as to rinse the residual solution inside the filter barrel. At this time, the drain valve is in the open state, and the waste water generated by the flushing flows down into the sample liquid tank and continues to be discharged through the three-way drain valve; (D) Maintenance of detection equipment; (D1) When the activated carbon fiber board needs to be replaced after long-term use, the bolts are tightened to release the fixation between the support barrel cover and the filter barrel, and the support barrel cover is pulled upward to pull the connecting rod and the limit plug out of the rotating rod, and then the rotating rod is pulled to pull the other limit plug out from the inside of the connecting rod, and the activated carbon fiber board can be replaced, and then the bottom of the new rotating rod is inserted into the inside of the rotating sealing rod, and the support barrel cover is closed on the filter barrel, so that the connecting rod and the limit plug are inserted into the inside of the rotating rod, and the support barrel cover and the filter barrel are fixed by bolts; (D2) When the sealing cover needs to be replaced after being used for a long time, tighten the bolts on the sealing cover to release the fixation between the sealing cover and the exhaust hood, then pull the sealing cover to take out the activated carbon filter plate for cleaning or replacement.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the air containing organic chlorine is filtered out, and after filtering out, the activated carbon fiber board is rinsed, and the sample solvent produced after rinsing is poured into the automatic sampler, so that the test personnel do not need to prepare samples through multiple extraction processes, which solves the problem of inconvenient air handling when the existing device for detecting the content of organic chlorine in the air is used, and greatly improves the convenience of the device for detecting the content of organic chlorine in the air when used.

[0016] 2. In the present invention, through the detachable powder filter, during each filtration, the corresponding type of activated carbon fiber board can be selected according to the type of harmful substances in the air to be detected. At the same time, after the filtering effect of the activated carbon fiber board is reduced after long-term use, the activated carbon fiber board can be replaced in time, thereby improving the convenience of maintenance of the organic chlorine content detection device.

[0017] 3. In the present invention, after the organic chlorine in the air is filtered out through the filtering structure at the exhaust end, the impurities and odors remaining in the air are filtered out through the activated carbon filter plate to avoid the discharged air polluting the environment, further improving the safety of the organic chlorine content detection device during use, and the detachable design of the activated carbon filter plate facilitates its replacement to ensure the filtering and purification effect of the exhaust end. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an organic chlorine content detection device according to an embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of another perspective of the three-dimensional structure of the organic chlorine content detection device in the embodiment shown; Figure 3 yes Figure 1 A three-dimensional schematic diagram of the partial structure of the organic chlorine content detection device in the embodiment shown; Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the organic chlorine content detection device during cleaning in the illustrated embodiment; Figure 5 yes Figure 1 The schematic diagram of the structure of the organic chlorine content detection device during cleaning in the illustrated embodiment is a bottom view.

[0020] The meanings of the reference numerals in the figure are as follows: 1. Ion chromatograph; 2. Automatic sample injector; 3. Detergent bottle; 4. Water purification bottle; 5. Filter sleeve barrel; 6. Sample liquid tank; 7. Support barrel cover; 8. Servo motor; 9. Rotating rod; 10. Activated carbon fiber board; 11. Drain valve; 12. Inlet interface pipe; 13. One-way inlet valve; 14. Connecting cover; 15. One-way exhaust valve; 16. Exhaust cover; 17. Filter screen; 18. Support rod; 19. Sealing cover; 20. Activated carbon filter plate; 21. Drain pipe; 22. Three-way drain valve; 23. Water inlet pipe; 24. Water inlet valve; 25. Rotating sealing rod; 26. Connecting rod; 27. Limiting plug. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] Reference Figure 1 , Figure 2 and Figure 4, a device for detecting organic chlorine content in air and a method for using the same, comprising an ion chromatograph 1 and an automatic sampler 2, wherein a detergent bottle 3 and a purified water bottle 4 are arranged on the top of the ion chromatograph 1, a filter barrel 5 is arranged on the rear side of the automatic sampler 2, a support barrel cover 7 is fixed to the top of the filter barrel 5 by bolts for sealing the filter barrel 5, a rotating rod 9 is arranged inside the filter barrel 5 for rotation, activated carbon fiber boards 10 are fixed on both sides of the rotating rod 9, a sample liquid tank 6 is arranged below the filter barrel 5, a drain valve 11 is connected to the bottom of the filter barrel 5, the bottom of the drain valve 11 is connected to the bottom of the sample liquid tank 6 for discharging the sample liquid inside the filter barrel 5 into the sample liquid tank 6, the drain valve 11 is located on the side of the rotating rod 9, the output end of the sample liquid tank 6 is connected to the input end of the automatic sampler 2, and the sample liquid tank 6 is close to the automatic sampler 2. A drain pipe 21 is provided on one side of the sampler 2, and the drain pipe 21 is connected with the input end of the automatic sampler 2. A three-way drain valve 22 is provided on the drain pipe 21. An air inlet interface pipe 12 is fixed through one end of the filter sleeve 5. The outer surface of the end of the air inlet interface pipe 12 away from the filter sleeve 5 is provided with a thread for connecting a collection bottle containing air to be detected. The center lines of the air inlet interface pipe 12 and the connecting cover 14 are located on the same horizontal line. A one-way air inlet valve 13 is provided on the air inlet interface pipe 12. A connecting cover 14 is fixed through the other end of the middle part of the filter sleeve 5, and a one-way exhaust valve 15 is provided on the connecting cover 14. A water inlet pipe 23 is connected to the top of the sample liquid box 6 for adding sodium hydroxide solution. A water inlet valve 24 is provided on the water inlet pipe 23, and a through hole matching the water inlet pipe 23 is provided on the top of the supporting barrel cover 7.

[0023] As an optimization solution, Figure 3 and Figure 5 As shown, a servo motor 8 is arranged on the top surface of the support barrel cover 7, and the input end of the servo motor 8 passes through the bottom surface of the support barrel cover 7 and is fixed with a connecting rod 26, a limiting plug block 27 is fixed on the bottom surface of the connecting rod 26, and the rotating rod 9 is sleeved on the connecting rod 26 and the limiting plug block 27. Another limiting plug block 27 is fixed at the bottom of the rotating rod 9, and a rotating sealing rod 25 is sleeved on the limiting plug block 27. The bottom of the rotating sealing rod 25 is rotatably connected to the inside of the filter barrel 5.

[0024] Specifically, both sides of the activated carbon fiber board 10 are slidably fitted with the inner wall of the filter sleeve barrel 5, and the upper and lower ends of the activated carbon fiber board 10 are respectively fitted with the bottom surface of the support barrel cover 7 and the top surface of the rotating sealing rod 25. A rectangular groove that cooperates with the limiting plug 27 is opened inside the rotating rod 9, and a rectangular slot that cooperates with another limiting plug 27 is opened at the center position of the top surface of the rotating sealing rod 25, so that when the rotating rod 9 rotates, it can also drive the rotating sealing rod 25 to rotate. At the same time, the rotating sealing rod 25 cooperates with the activated carbon fiber board 10 to ensure that the air intake interface pipe 12 and the connecting cover 14 can be separated, thereby ensuring that air can be filtered by the activated carbon fiber board 10 after entering and before being discharged. The rotating sealing rod 25 is set to be a straight line that cooperates with the rotating rod 9 and the activated carbon fiber board 10.

[0025] As a further optimization solution, Figure 5 As shown, one end of the one-way exhaust valve 15 away from the connecting cover 14 is connected with the exhaust cover 16, an activated carbon filter plate 20 is slidably inserted inside the exhaust cover 16, and a sealing cover plate 19 is fixed to one end of the activated carbon filter plate 20 extending to the top surface of the exhaust cover 16. The sealing cover plate 19 is fixed to the top surface of the exhaust cover 16 at the corner by bolts, and a handle is fixed to the middle of the top surface of the sealing cover plate 19. A filter screen 17 is fixed to the side of the exhaust hood 16 away from the connecting cover 14, and a support rod 18 is symmetrically fixed to the bottom surface of the exhaust hood 16. The end of the bottom of the support rod 18 away from the exhaust hood 16 is fixed to the side wall of the sample liquid box 6, and the support rod 18 is set to an L-shape that cooperates with the exhaust hood 16 and the sample liquid box 6.

[0026] Working Principle: The method of use includes the following steps: During the test, the air to be tested is introduced into the filter sleeve barrel 5 and filtered, the collecting bottle containing the air to be tested is screwed to the air inlet interface pipe 12 and fixed, and the water inlet valve 24, the drain valve 11 and the three-way drain valve 22 are closed at the same time, and then the one-way air inlet valve 13 and the switch on the collecting bottle are opened, so that the air to be tested enters the filter sleeve barrel 5. After the air is filtered by the activated carbon fiber board 10, it is discharged from the filter sleeve barrel 5 through the connecting cover 14 and the one-way exhaust valve 15. At this time, the organic chlorine in the air is filtered on the activated carbon fiber board 10, and the air discharged from the filter sleeve barrel 5 enters the exhaust cover 16 under the guidance of the connecting cover 14 and the one-way exhaust valve 15, and is filtered in turn by the activated carbon filter board 20 and the filter screen 17 before being discharged; The organic chlorine on the activated carbon fiber board 10 is rinsed. After the filtration is completed, the air inlet interface pipe 12 and the one-way exhaust valve 15 are closed. At the same time, the pipe connected to the water outlet of the sodium hydroxide solution tank is inserted into the water inlet pipe 23, and the water inlet valve 24 is opened to allow the sodium hydroxide solution to enter the filter sleeve barrel 5. At this time, the servo motor 8 is running, and the rotating rod 9 is driven to rotate through the connecting rod 26 and the limit plug 27. When the rotating rod 9 rotates, it drives the activated carbon fiber board 10 to rotate, so that the activated carbon fiber board 10 is stirred in the sodium hydroxide solution to activate the activated carbon fiber board 10. The organic chlorine filtered on the carbon fiber board 10 is rinsed into the solution. After the rinsing is completed, the drain valve 11 is opened to allow the sample solution in the filter sleeve barrel 5 to enter the sample liquid box 6. Then the three-way drain valve 22 is controlled to open so that the input end of the automatic sampler 2 is connected with the inside of the sample liquid box 6. The automatic sampler 2 is operated to draw the sample solution into its input end through the drain pipe 21, and after being processed by the automatic sampler 2, it is injected into the ion chromatograph 1. Then the ion chromatograph 1 is opened and the ion chromatograph 1 is controlled by a computer to run for detection. The residual liquid is discharged and cleaned. After the detection is completed, the three-way drain valve 22 is controlled so that the three-way drain valve 22 opens to another discharge port. At this time, the residual solution in the sample liquid box 6 is discharged, and at the same time, clean water is continuously added through the water inlet pipe 23. The servo motor 8 continues to operate to drive the activated carbon fiber board 10 to rotate, and the residual solution inside the filter sleeve barrel 5 is rinsed clean. At this time, the drain valve 11 is in an open state, and the waste water generated by the flushing is discharged downstream into the sample liquid box 6, and continues to be discharged through the three-way drain valve 22; When the activated carbon fiber board 10 needs to be replaced after being used for a long time, the bolts are tightened to release the fixation of the support barrel cover 7 and the filter barrel 5, and the support barrel cover 7 is pulled upward to pull the connecting rod 26 and the limiting plug 27 out of the rotating rod 9, and then the rotating rod 9 is pulled to pull the other limiting plug 27 out from the inside of the connecting rod 26, and the activated carbon fiber board 10 can be replaced, and then the bottom of the new rotating rod 9 is inserted into the inside of the rotating sealing rod 25, and the support barrel cover 7 is closed on the filter barrel 5, so that the connecting rod 26 and the limiting plug 27 are inserted into the inside of the rotating rod 9, and the support barrel cover 7 is fixed to the filter barrel 5 by bolts. When the sealing cover plate 19 needs to be replaced after being used for a long time, the bolts on the sealing cover plate 19 are tightened to release the fixation of the sealing cover plate 19 and the exhaust hood 16, and then the sealing cover plate 19 is pulled to take out the activated carbon filter plate 20 for cleaning or replacement.

[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for detecting organic chlorine content in air, characterized in that: The invention comprises an ion chromatograph (1) and an automatic sample injector (2), wherein a detergent bottle (3) and a purified water bottle (4) are arranged on the top of the ion chromatograph (1), a filter barrel (5) is arranged on the rear side of the automatic sample injector (2), a support barrel cover (7) is fixed to the top of the filter barrel (5) by bolts, and is used to seal the filter barrel (5), a rotating rod (9) is rotatably arranged inside the filter barrel (5), and activated carbon fiber boards (10) are fixed on both sides of the rotating rod (9), and a filter barrel (5) is arranged below the filter barrel (5). A sample liquid box (6) is provided, wherein the output end of the sample liquid box (6) is connected to the input end of the automatic sampler (2); an air intake interface pipe (12) is fixedly passed through one end of the filter barrel (5); a one-way air intake valve (13) is arranged on the air intake interface pipe (12); a connecting cover (14) is fixedly passed through the other end of the middle of the filter barrel (5); a one-way exhaust valve (15) is arranged on the connecting cover (14); and a water inlet pipe (23) is passed through the top of the sample liquid box (6) for adding sodium hydroxide solution.

2. The device for detecting organic chlorine content in air according to claim 1, characterized in that: The bottom of the filter barrel (5) is connected to a drain valve (11), and the bottom of the drain valve (11) is connected to the bottom of the sample liquid box (6) for draining the sample liquid in the filter barrel (5) into the sample liquid box (6). The drain valve (11) is located on the side of the rotating rod (9).

3. The device for detecting organic chlorine content in air according to claim 1, characterized in that: A servo motor (8) is arranged on the top surface of the support barrel cover (7); an input end of the servo motor (8) passes through the bottom surface of the support barrel cover (7) and is fixed with a connecting rod (26); a limit plug (27) is fixed to the bottom surface of the connecting rod (26); the rotating rod (9) is sleeved on the connecting rod (26) and the limit plug (27); another limit plug (27) is fixed to the bottom of the rotating rod (9); a rotating sealing rod (25) is sleeved on the limit plug (27); and the bottom of the rotating sealing rod (25) is rotatably connected to the inside of the filter barrel (5).

4. The device for detecting organic chlorine content in air according to claim 1, characterized in that: A liquid discharge pipe (21) is provided on one side of the sample liquid box (6) close to the automatic sampler (2). The liquid discharge pipe (21) is connected to the input end of the automatic sampler (2). A three-way liquid discharge valve (22) is provided on the liquid discharge pipe (21).

5. The device for detecting organic chlorine content in air according to claim 3, characterized in that: The two sides of the activated carbon fiber plate (10) are slidably fitted with the inner wall of the filter sleeve barrel (5), and the upper and lower ends of the activated carbon fiber plate (10) are respectively fitted with the bottom surface of the support barrel cover (7) and the top surface of the rotating sealing rod (25). The rotating rod (9) is provided with a rectangular groove that cooperates with the limiting plug block (27). The center position of the top surface of the rotating sealing rod (25) is provided with a rectangular slot that cooperates with another limiting plug block (27). The rotating sealing rod (25) is arranged in a straight line shape that cooperates with the rotating rod (9) and the activated carbon fiber plate (10).

6. The device for detecting organic chlorine content in air according to claim 1, characterized in that: The outer surface of one end of the air inlet interface pipe (12) away from the filter sleeve barrel (5) is provided with a thread for connecting to a collection bottle containing air to be detected. The center line of the air inlet interface pipe (12) and the connection cover (14) are located on the same horizontal line.

7. The device for detecting organic chlorine content in air according to claim 1, characterized in that: The one end of the one-way exhaust valve (15) away from the connection cover (14) is connected to the exhaust cover (16), and a filter screen (17) is fixed to the side of the exhaust cover (16) away from the connection cover (14). A support rod (18) is symmetrically fixed to the bottom surface of the exhaust cover (16), and the end of the bottom of the support rod (18) away from the exhaust cover (16) is fixed to the side wall of the sample liquid box (6), and the support rod (18) is arranged to be L-shaped to match the exhaust cover (16) and the sample liquid box (6).

8. The device for detecting organic chlorine content in air according to claim 7, characterized in that: An activated carbon filter plate (20) is slidably inserted inside the exhaust hood (16); a sealing cover plate (19) is fixed to one end of the activated carbon filter plate (20) extending to the top surface of the exhaust hood (16); a corner of the sealing cover plate (19) is fixed to the top surface of the exhaust hood (16) by bolts; and a handle is fixed in the middle of the top surface of the sealing cover plate (19).

9. The device for detecting organic chlorine content in air according to claim 1, characterized in that: The water inlet pipe (23) is provided with a water inlet valve (24), and the top of the support barrel cover (7) is provided with a through hole that cooperates with the water inlet pipe (23).

10. A method for using the device for detecting organic chlorine content in air obtained from the device for detecting organic chlorine content in air according to claim 1, characterized in that: The method of use comprises the following steps: (A) introducing the air to be tested into the filter sleeve (5) and filtering it; (A1), screwing the collection bottle containing the air to be tested onto the air inlet interface pipe (12) and fixing it, while closing the water inlet valve (24), the water discharge valve (11) and the three-way drain valve (22), opening the one-way exhaust valve (15), and operating the servo motor (8) to drive the rotating rod (9) to rotate, and the rotating rod (9) to rotate the activated carbon fiber board (10), so that the activated carbon fiber board (10) is vertically located between the one-way air inlet valve (13) and the connecting cover (14); (A2), then open the one-way air inlet valve (13) and the switch on the collection bottle, so that the air to be detected enters the filter sleeve barrel (5). After the air inside is filtered by the activated carbon fiber board (10), it is discharged from the filter sleeve barrel (5) through the connecting cover (14) and the one-way exhaust valve (15). At this time, the organic chlorine in the air is filtered on the activated carbon fiber board (10); (A3), the air discharged from the filter sleeve barrel (5) enters the interior of the exhaust hood (16) under the guidance of the connecting hood (14) and the one-way exhaust valve (15), and is filtered in sequence through the activated carbon filter plate (20) and the filter screen (17) before being discharged; (B), washing the organic chlorine on the activated carbon fiber board (10); (B1), after the filtration is completed, close the air inlet interface pipe (12) and the one-way exhaust valve (15), insert the pipe connected to the water outlet of the sodium hydroxide solution tank into the water inlet pipe (23), and open the water inlet valve (24); (B2), allowing the sodium hydroxide solution to enter the interior of the filter sleeve barrel (5), at which time the servo motor (8) is running, driving the rotating rod (9) to rotate through the connecting rod (26) and the limit plug (27), and when the rotating rod (9) rotates, the activated carbon fiber board (10) is driven to rotate, so that the activated carbon fiber board (10) is stirred in the sodium hydroxide solution, and the organic chlorine filtered on the activated carbon fiber board (10) is washed into the solution; (B3), after the flushing is completed, the drain valve (11) is opened to allow the sample solution in the filter sleeve barrel (5) to enter the sample liquid box (6), and then the three-way drain valve (22) is controlled to open to allow the input end of the automatic sampler (2) to be connected with the inside of the sample liquid box (6). The automatic sampler (2) is operated to draw the sample solution into its input end through the drain pipe (21), and after being processed by the automatic sampler (2), the sample solution is injected into the ion chromatograph (1), and then the ion chromatograph (1) is turned on and the ion chromatograph (1) is controlled by a computer to operate for detection; Drain the residual liquid and clean it; (C1), after the detection is completed, the three-way drain valve (22) is controlled so that the three-way drain valve (22) is opened to another drain outlet, and the residual solution in the sample liquid box (6) is discharged; (C2), while continuing to add clean water through the water inlet pipe (23), the servo motor (8) continues to operate to drive the activated carbon fiber plate (10) to rotate, and the residual solution inside the filter barrel (5) is rinsed clean. At this time, the drain valve (11) is in an open state, and the waste water generated by the flushing flows downstream into the sample liquid box (6) and continues to be discharged through the three-way drain valve (22); (D) Maintenance of detection equipment; (D1) When the activated carbon fiber board (10) needs to be replaced after being used for a long time, the bolts are turned to release the fixing of the support barrel cover (7) and the filter barrel (5), and the support barrel cover (7) is pulled upward so that the connecting rod (26) and the limiting plug (27) are pulled out of the rotating rod (9), and then the rotating rod (9) is pulled to pull the other limiting plug (27) out from the inside of the connecting rod (26), so that the activated carbon fiber board (10) can be replaced, and then the bottom of the new rotating rod (9) is inserted into the inside of the rotating sealing rod (25), and the support barrel cover (7) is covered on the filter barrel (5), so that the connecting rod (26) and the limiting plug (27) are inserted into the inside of the rotating rod (9), and the support barrel cover (7) and the filter barrel (5) are fixed by bolts; (D2) When the sealing cover plate (19) needs to be replaced after being used for a long time, the bolts on the sealing cover plate (19) are screwed to release the fixing of the sealing cover plate (19) and the exhaust hood (16), and then the sealing cover plate (19) is pulled to remove the activated carbon filter plate (20) for cleaning or replacement.

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