Exhaust emission device and liquid chromatography tandem mass spectrometer

Abstract

The utility model relates to the technical field of waste gas emission devices, and discloses a waste gas emission device which comprises a waste gas emission assembly. According to the waste gas emission device and the liquid chromatography tandem mass spectrometer, a plurality of gas inlet pipes and an exhaust main pipe are integrated through the treatment box, multi-channel waste gas centralized treatment is achieved, the servo motor drives the reciprocating lead screw to drive the cleaning brush to reciprocate along the guide rod, a filter screen made of a stainless steel sintered mesh material is automatically cleaned, blockage is avoided, and the working efficiency is improved. The fan assembly accelerates waste gas flowing through a gas collecting hood, a rotating shaft of the fan assembly is in linkage with a first chain wheel, a second chain wheel and a chain through a first bevel gear, a transmission rod and a second bevel gear, the cleaning system can drive the auxiliary exhaust function to work, extra energy consumption is not needed, and the device is more practical; a waste gas pipe on the liquid chromatogram tandem mass spectrometer body is communicated with a gas inlet pipe on one side of the treatment box through a second one-way valve and a second electromagnetic valve, so that directional conveying of waste gas is ensured, and the scheme realizes a self-cleaning effect through mechanical linkage.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of waste gas emission devices, in particular to a waste gas emission device and a liquid chromatography tandem mass spectrometer. BACKGROUND

[0002] The liquid chromatography tandem mass spectrometer is a high-sensitivity analysis instrument widely applied to the fields of chemistry, biology, medicine and the like. In the analysis process, after being separated by liquid chromatography, samples enter a mass spectrometer for detection, and a large amount of volatile organic compounds (VOCs) and other harmful gases are generated. If the waste gas is directly discharged without treatment, it will cause harm to the laboratory environment and the health of the operating personnel. At present, the demand for waste gas treatment in the industry is increasing, but the existing waste gas emission technology still has problems such as low efficiency, high cost or secondary pollution.

[0003] The existing patent (announcement number: CN210522043U) discloses a waste gas emission device and a liquid chromatography tandem mass spectrometer comprising the waste gas emission device. The waste gas emission device comprises a first exhaust pipe, a plurality of second exhaust pipes, a multi-channel air inlet and exhaust valve and a filter unit. The first exhaust pipe is connected with the plurality of second exhaust pipes through the multi-channel air inlet and exhaust valve, and the first exhaust pipe can be in communication with any second exhaust pipe. The filter unit is arranged in the first exhaust pipe. The first exhaust pipe is used for penetrating through the wall and being in communication with the external space. The second exhaust pipe is used for being respectively communicated with each waste gas emission port. No matter whether the waste gas emission port is single or multiple, only one through hole for the first exhaust pipe to penetrate through the wall is needed, so that the waste gas can be discharged to the external space, and the discharged waste gas will not cause environmental pollution. On the one hand, the harm to the wall is reduced, the stability and the airtightness of the wall are influenced, the workload of the workers is reduced, and the labor cost is saved. On the other hand, the quality of the waste gas is effectively improved.

[0004] Although the device in the above-mentioned comparative document can discharge the waste gas to the external space, the filter unit will be blocked after a long time of use. The device cannot conveniently clean the filter unit, so that the quality of the waste gas emission is affected. In order to solve the above-mentioned problems, the waste gas emission device and the liquid chromatography tandem mass spectrometer are provided. Practical new type content

[0005] In view of the deficiencies of the prior art, the application provides the waste gas emission device and the liquid chromatography tandem mass spectrometer. The treatment box and the self-cleaning filter screen are introduced, so that the technical problems of the filter screen being easily blocked and the high maintenance frequency are solved.

[0006] To achieve the above object, the application provides the following technical scheme: a waste gas discharge device, comprising a waste gas discharge assembly, the waste gas discharge assembly comprising a treatment box and an exhaust main pipe connected on one side of the treatment box, a servo motor being fixedly connected to the front surface of the treatment box, a reciprocating screw rod being fixedly connected to the output shaft end of the servo motor, a cleaning brush being threadedly connected to the outer surface of the reciprocating screw rod, a filter screen being fixedly connected to the input end of the exhaust main pipe, a rotatable fan assembly being installed on the other side of the treatment box, a gas collecting cover being sleeved on the outer part of the fan assembly, a first bevel gear being fixedly connected to the other end of the reciprocating screw rod, a second sprocket being fixedly connected to the rotating shaft end of the fan assembly, and a transmission rod being installed between the first bevel gear and the cleaning brush.

[0007] Through the above scheme, the treatment box is integrated with multiple air inlet pipes and one exhaust main pipe, so that multi-channel waste gas can be concentrated and treated, the servo motor drives the reciprocating screw rod to drive the cleaning brush to reciprocate along the guide rod, the filter screen is automatically cleaned, blockage is avoided, the fan assembly accelerates the flow of waste gas through the gas collecting cover, and the transmission rod and the corresponding assembly are cooperatively arranged, so that the kinetic energy of the cleaning system can be reused to drive the auxiliary exhaust function to work, without additional energy consumption, which is more practical. The scheme realizes the self-cleaning effect through mechanical linkage, can reuse the power, significantly reduces the blockage rate of the filter screen, reduces the frequency of manual maintenance, and improves the waste gas treatment efficiency and equipment reliability.

[0008] Further, multiple air inlet pipes are installed on the other side of the treatment box, the output ends of the multiple air inlet pipes are located inside the gas collecting cover, and the gas collecting cover is fixedly connected to the inner wall of the treatment box.

[0009] Through the above scheme, the multiple air inlet pipes arranged can realize the function of multi-channel delivery of waste gas, which is more practical.

[0010] Further, two guide rods are installed on the inner wall of the treatment box, the two sides of the cleaning brush are slidably sleeved on the outer surfaces of the two guide rods, the cleaning soft hair on the surface of the cleaning brush is made of PTFE material, and the filter screen is a stainless steel sintered screen.

[0011] Through the above scheme, the guide rods arranged can make the cleaning brush more stable during reciprocating movement, thereby effectively optimizing the cleaning and dredging effect of the filter screen.

[0012] Further, the transmission rod is rotatably connected to the outer surface of the treatment box, and the two ends of the transmission rod are fixedly connected with a second bevel gear and a first sprocket, respectively.

[0013] Through the above scheme, the transmission rod arranged can facilitate the transmission work between the first bevel gear and the second sprocket.

[0014] Further, the second bevel gear is engaged with the first bevel gear, and the first chain wheel is externally provided with a chain, and the first chain wheel is in transmission connection with the second chain wheel through the chain.

[0015] Through the above scheme, when the first bevel gear rotates, the transmission rod is driven to rotate through the second bevel gear, when the transmission rod rotates, the second chain wheel is driven to rotate through the first chain wheel and the chain, and when the second chain wheel rotates, the fan assembly is driven to rotate, so that the gas in the air inlet pipe can enter the treatment box.

[0016] Further, the pipe section of the exhaust manifold is provided with a first check valve and a first electromagnetic valve, the front of the treatment box is provided with a controller, the electrical elements in the exhaust emission assembly are electrically connected with the controller, and the bottom of the treatment box is provided with a detachable maintenance cover plate.

[0017] Through the above scheme, the first check valve can avoid the gas in the exhaust manifold from being sucked back into the treatment box, improve the safety performance of the exhaust, the first electromagnetic valve can conveniently control the rate of gas delivery in the exhaust manifold, the controller can conveniently control the electrical elements in the exhaust emission assembly to work, and the maintenance cover plate can conveniently clean the waste in the treatment box.

[0018] The utility model further provides, liquid chromatography tandem mass spectrometer, including liquid chromatography tandem mass spectrometer body and like above described exhaust emission device, one side of liquid chromatography tandem mass spectrometer body is provided with a plurality of waste gas pipes, a plurality of waste gas pipes are linked with a plurality of air pipes respectively.

[0019] Through the above scheme, the exhaust gas generated in the liquid chromatography tandem mass spectrometer body is delivered to the air pipe through the waste gas pipe, and then the exhaust gas is delivered to the treatment box through the air pipe for centralized discharge treatment.

[0020] Further, the pipe section of each waste gas pipe is provided with a second check valve and a second electromagnetic valve, and the second electromagnetic valves are electrically connected with the controller.

[0021] Through the above scheme, the second check valve can avoid the exhaust gas from being sucked back into the liquid chromatography tandem mass spectrometer body, and the second electromagnetic valve can conveniently regulate and control the exhaust emission of the exhaust gas in the exhaust gas pipe.

[0022] Compared with the prior art, the technical scheme of the present application has the following advantages:

[0023] The exhaust emission device and the liquid chromatography tandem mass spectrometer, through the processing box integrated with multiple air inlet pipes and an exhaust main pipe, realize centralized processing of multiple channels of exhaust gas, the servo motor drives the reciprocating screw rod to drive the cleaning brush to reciprocate along the guide rod to automatically clean the filter screen of the stainless steel sintered mesh material, avoid blockage, the fan assembly accelerates the flow of exhaust gas through the gas collecting hood, the shaft is linked with the first sprocket, the second sprocket and the chain through the first bevel gear, the transmission rod and the second bevel gear, the power of the cleaning system is reused to drive the auxiliary exhaust function to work, without additional energy consumption, more practical, the exhaust pipe on the liquid chromatography tandem mass spectrometer body is communicated with the air inlet pipe on one side of the processing box through the second check valve and the second electromagnetic valve, to ensure directional delivery of the exhaust gas, the scheme realizes the self-cleaning effect through mechanical linkage, and the power can be reused, the filter screen blockage rate is significantly reduced, the frequency of manual maintenance is reduced, and the exhaust treatment efficiency and equipment reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall front view structure of the structure of the application;

[0025] Figure 2 It is a schematic diagram of the overall rear view structure of the structure of the application;

[0026] Figure 3 It is a schematic diagram of the overall rear view structure of the structure of the application; Figure 2 It is an enlarged schematic diagram of structure A in the application;

[0027] Figure 4 It is a schematic diagram of the first partial cross-sectional structure of the structure of the application;

[0028] Figure 5 It is a schematic diagram of the second partial cross-sectional structure of the application.

[0029] In the figure:

[0030] 1, exhaust emission assembly; 101, processing box; 102, air inlet pipe; 103, exhaust main pipe; 104, servo motor; 105, reciprocating screw rod; 106, cleaning brush; 107, guide rod; 108, filter screen; 109, fan assembly; 110, gas collecting hood; 111, first bevel gear; 112, transmission rod; 113, second bevel gear; 114, first check valve; 115, first sprocket; 116, second sprocket; 117, chain; 118, first electromagnetic valve; 2, controller; 3, maintenance cover plate; 4, liquid chromatography tandem mass spectrometer body; 5, exhaust pipe; 6, second check valve; 7, second electromagnetic valve. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] Please refer to Figure 1 , Figure 3 and Figure 5 , the waste gas exhaust device in the embodiment comprises a waste gas exhaust assembly 1, the waste gas exhaust assembly 1 comprises a treatment box 101 and an exhaust main pipe 103 communicated at one side of the treatment box 101, the front surface of the treatment box 101 is fixedly connected with a servo motor 104, the output shaft end of the servo motor 104 is fixedly connected with a reciprocating screw rod 105, the outer surface of the reciprocating screw rod 105 is threadedly connected with a cleaning brush 106, two guide rods 107 are installed on the inner wall of the treatment box 101, the two sides of the cleaning brush 106 are respectively slidably sleeved on the outer surfaces of the two guide rods 107, the guide rods 107 can make the cleaning brush 106 more stable when moving reciprocally, the input end of the exhaust main pipe 103 is fixedly connected with a filter screen 108, the cleaning bristles on the surface of the cleaning brush 106 are made of PTFE material, the filter screen 108 is a stainless steel sintered screen, when the servo motor 104 starts, the reciprocating screw rod 105 will be driven to rotate, the reciprocating movement of the cleaning brush 106 along the two guide rods 107 can be realized through the rotation of the reciprocating screw rod 105, so that the impurities attached to the surface of the filter screen 108 can be cleaned in real time, the device has a self-cleaning effect, the probability of the filter screen 108 being blocked is reduced, and the exhaust work is avoided from being affected, a rotatable fan assembly 109 is installed on the other side of the treatment box 101, a gas collecting cover 110 is sleeved outside the fan assembly 109, a plurality of air inlet pipes 102 are installed on the other side of the treatment box 101, the output ends of the plurality of air inlet pipes 102 are located inside the gas collecting cover 110, the gas collecting cover 110 is fixedly connected to the inner wall of the treatment box 101, the plurality of air inlet pipes 102 can realize the function of multi-channel conveying of waste gas, and are more practical, when the fan assembly 109 rotates, the gas flow rate inside the air inlet pipe 102 and the gas collecting cover 110 can be accelerated, so that the waste gas can quickly pass through the air inlet pipe 102, the gas collecting cover 110 and the treatment box 101, and then be discharged through the exhaust main pipe 103.

[0033] Please refer to Figure 3 , Figure 4 and Figure 5The other end of the reciprocating wire rod 105 is fixedly connected with a first bevel gear 111, which is driven to rotate when the reciprocating wire rod 105 rotates. The rotating shaft end of the fan assembly 109 is fixedly connected with a second sprocket 116. The transmission rod 112 is installed between the first bevel gear 111 and the cleaning brush 106 and is rotatably connected to the outer surface of the treatment box 101. The two ends of the transmission rod 112 are fixedly connected with a second bevel gear 113 and a first sprocket 115, respectively. The transmission rod 112 facilitates the transmission work between the first bevel gear 111 and the second sprocket 116. The second bevel gear 113 is engaged with the first bevel gear 111. The first sprocket 115 is provided with a chain 117. The first sprocket 115 is in transmission connection with the second sprocket 116 through the chain 117. When the first bevel gear 111 rotates, the transmission rod 112 is driven to rotate through the second bevel gear 113. When the transmission rod 112 rotates, the second sprocket 116 is driven to rotate through the first sprocket 115 and the chain 117. When the second sprocket 116 rotates, the fan assembly 109 rotates, thereby accelerating the gas in the air inlet pipe 102 to enter the treatment box 101. The pipe section of the exhaust manifold 103 is provided with a first check valve 114 and a first electromagnetic valve 118. The front of the treatment box 101 is provided with a controller 2. The electrical elements in the exhaust emission assembly 1 are electrically connected with the controller 2. The bottom of the treatment box 101 is provided with a detachable maintenance cover plate 3. The first check valve 114 prevents the gas in the exhaust manifold 103 from being sucked into the treatment box 101, thereby improving the safety performance of the exhaust. The first electromagnetic valve 118 facilitates the control of the rate of gas delivery in the exhaust manifold 103. The controller 2 facilitates the work of the electrical elements in the exhaust emission assembly 1. The maintenance cover plate 3 facilitates the regular cleaning of the waste in the treatment box 101.

[0034] Please refer to Figure 1 and Figure 2 In the embodiment, the liquid chromatograph tandem mass spectrometer further comprises a plurality of exhaust pipes 5 installed on one side of the liquid chromatograph tandem mass spectrometer body 4. The plurality of exhaust pipes 5 are in communication with the plurality of air inlet pipes 102. The exhaust gas generated in the liquid chromatograph tandem mass spectrometer body 4 is delivered to the air inlet pipe 102 through the exhaust pipe 5, and then delivered to the treatment box 101 through the air inlet pipe 102 for centralized exhaust treatment. A second check valve 6 and a second electromagnetic valve 7 are installed on the pipe section of each exhaust pipe 5. The plurality of second electromagnetic valves 7 are electrically connected with the controller 2. The second check valve 6 prevents the exhaust gas from being sucked into the liquid chromatograph tandem mass spectrometer body 4. The second electromagnetic valve 7 facilitates the regulation and control of the exhaust emission of the exhaust pipe 5.

[0035] In the embodiment, the waste gas discharge device and the liquid chromatography tandem mass spectrometer are integrated with multiple gas inlet pipes 102 and one exhaust pipe 103 through the processing box 101 to realize centralized processing of multiple channels of waste gas. The servo motor 104 drives the reciprocating screw rod 105 to drive the cleaning brush 106 to move back and forth along the guide rod 107 to automatically clean the filter screen 108 made of stainless steel sintered mesh material, thereby avoiding blockage. The fan assembly 109 accelerates the flow of waste gas through the gas collector 110. The rotating shaft is linked with the first bevel gear 111, the transmission rod 112, the second bevel gear 113, the first sprocket 115, the second sprocket 116, and the chain 117. The power of the cleaning system is reused to drive the auxiliary exhaust function to work without additional energy consumption, which is more practical. The waste gas pipe 5 on the liquid chromatography tandem mass spectrometer body 4 is connected with the gas inlet pipe 102 on one side of the processing box 101 through the second one-way valve 6 and the second electromagnetic valve 7 to ensure directional delivery of waste gas. This scheme realizes self-cleaning through mechanical linkage and can reuse power, significantly reduces the blockage rate of the filter screen 108, reduces the frequency of manual maintenance, and improves the waste gas treatment efficiency and equipment reliability.

[0036] The working principle of the above embodiment is as follows: the waste gas generated during the analysis process of the liquid chromatography tandem mass spectrometer body 4 is delivered to the inside of the processing box 101 through the waste gas pipe 5 and the gas inlet pipe 102. The second one-way valve 6 and the second electromagnetic valve 7 on the waste gas pipe 5 prevent backflow of waste gas and regulate flow, respectively. After the waste gas enters the gas collector 110 through the gas inlet pipe 102, it is delivered to the filter screen 108 guided by the gas collector 110. The filter screen 108 made of stainless steel sintered mesh material intercepts harmful particulate matter. The treated waste gas is discharged through the exhaust pipe 103. The first one-way valve 114 and the first electromagnetic valve 118 on the pipe section prevent backflow of gas and control the discharge rate, respectively. At the same time, the servo motor 104 can be started. When the servo motor 104 is started, it drives the reciprocating screw rod 105 to rotate. The rotation of the reciprocating screw rod 105 enables the cleaning brush 106 to move back and forth along the surface of the filter screen 108 to remove deposits in real time, thereby achieving self-cleaning of the filter screen 108. Meanwhile, the first bevel gear 111 at the other end of the reciprocating screw rod 105 drives the second bevel gear 113 and the transmission rod 112 to rotate. The rotation of the transmission rod 112 drives the first sprocket 115 to rotate. When the first sprocket 115 rotates, it drives the second sprocket 116 to rotate through the chain 117, thereby enabling the fan assembly 109 to rotate. The power of the reciprocating screw rod 105 is reused to drive the fan assembly 109 to rotate, which accelerates the flow rate of the gas inside the gas inlet pipe 102 and the gas collector 110. The waste gas can quickly pass through the processing box 101 and be discharged through the exhaust pipe 103. The entire system realizes efficient purification of waste gas and long-term stable operation of the equipment through automatic cleaning and power reuse.

[0037] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the enclosed claims. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the application can be varied in a multitude of ways. Such alterations, many of which will be apparent to those skilled in the art, can be based on current technology, and as such, this application should not be limited to the particular embodiments described herein, but should be understood to include all embodiments that are within the scope of the appended claims and their equivalents.

[0038] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, which can be limited only by the scope of the appended claims and their equivalents.

Claims

1. An exhaust gas emission device, comprising an exhaust gas emission component (1), characterized in that: The exhaust gas emission assembly (1) includes a treatment box (101) and an exhaust manifold (103) connected to one side of the treatment box (101). A servo motor (104) is fixedly connected to the front of the treatment box (101). A reciprocating screw (105) is fixedly connected to the output shaft end of the servo motor (104). A cleaning brush (106) is threadedly connected to the outer surface of the reciprocating screw (105). A filter screen (108) is fixedly connected to the input end of the exhaust manifold (103). A rotatable fan assembly (109) is installed on the other side of the treatment box (101). A gas collection hood (110) is fitted on the outside of the fan assembly (109). A first bevel gear (111) is fixedly connected to the other end of the reciprocating screw (105). A second sprocket (116) is fixedly connected to the shaft end of the fan assembly (109). A transmission rod (112) is installed between the first bevel gear (111) and the cleaning brush (106).

2. The exhaust gas emission device according to claim 1, characterized in that: Multiple air inlet pipes (102) are installed on the other side of the processing box (101). The output ends of the multiple air inlet pipes (102) are all located inside the gas collection hood (110), which is fixedly connected to the inner wall of the processing box (101).

3. The exhaust gas emission device according to claim 1, characterized in that: The inner wall of the processing box (101) is equipped with two guide rods (107). The two sides of the cleaning brush (106) are slidably sleeved on the outer surface of the two guide rods (107). The cleaning bristles on the surface of the cleaning brush (106) are made of PTFE material. The filter screen (108) is a stainless steel sintered mesh.

4. The exhaust gas emission device according to claim 1, characterized in that: The transmission rod (112) is rotatably connected to the outer surface of the processing box (101), and the two ends of the transmission rod (112) are respectively fixedly connected to the second bevel gear (113) and the first sprocket (115).

5. The exhaust gas emission device according to claim 4, characterized in that: The second bevel gear (113) meshes with the first bevel gear (111), and the first sprocket (115) is provided with a chain (117) on its outside. The first sprocket (115) is connected to the second sprocket (116) through the chain (117).

6. The exhaust gas emission device according to claim 1, characterized in that: The exhaust manifold (103) is equipped with a first check valve (114) and a first solenoid valve (118). The front of the treatment box (101) is equipped with a controller (2). The electrical components inside the exhaust gas emission assembly (1) are all electrically connected to the controller (2). The bottom of the treatment box (101) is equipped with a detachable maintenance cover (3).

7. A liquid chromatography-tandem mass spectrometer, characterized in that: The device includes a liquid chromatography-tandem mass spectrometer body (4) and a waste gas emission device as described in any one of claims 1-6. A plurality of waste gas pipes (5) are installed on one side of the liquid chromatography-tandem mass spectrometer body (4), and the plurality of waste gas pipes (5) are respectively connected to a plurality of air inlet pipes (102).

8. The liquid chromatography-tandem mass spectrometer according to claim 7, characterized in that: Each section of the exhaust pipe (5) is equipped with a second check valve (6) and a second solenoid valve (7), and multiple second solenoid valves (7) are electrically connected to the controller (2).

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