Gas chromatographic analyzer with filtering function

Abstract

The utility model relates to a gas chromatographic analyzer with a filtering function, which comprises a filtering cylinder and further comprises a plurality of arc-shaped holes, a gas inlet, a gas outlet, a gas inlet and a gas outlet, wherein the arc-shaped holes are formed in the front end of the filtering cylinder; the filter cartridge is provided with a plurality of arc-shaped holes, the filter mechanism is rotatably connected to one sides of the plurality of arc-shaped holes, the filter mechanism comprises a plurality of hinges, the plurality of hinges are rotatably connected to one sides of the plurality of arc-shaped holes, and arc-shaped clamping plates are fixed to the other sides of the hinges. As the arc-shaped clamping plate is connected with the fixing ring, the filter screen can be driven to be directly screwed out of the filter cartridge when the arc-shaped clamping plate moves, so that the filter screen can be conveniently disassembled, assembled and replaced, the disassembly and assembly efficiency of the filter screen is improved, and the whole filter cartridge does not need to be disassembled.

Description

Technical Field

[0001] The utility model relates to the field of chromatographic analysis, in particular to a gas chromatograph with a filtering function. Background Art

[0002] Gas chromatograph is an instrument that uses chromatographic separation and detection technology to conduct qualitative and quantitative analysis of complex multi-component mixtures. It can usually be used to analyze organic matter in soil that is thermally stable and has a boiling point of no more than 500 degrees, such as volatile organic matter, organochlorine, organophosphorus, polycyclic aromatic hydrocarbons, phthalates, etc.

[0003] According to the published patent 202220820078.8, a gas chromatograph with a filtering function includes a chromatograph body, the top of the chromatograph body is connected to an injection cylinder through a mounting frame, one side of the injection cylinder is connected to a sample guide cylinder, a mounting hole is provided on one side of the mounting frame, and a filtering assembly is slidably connected inside the mounting hole, including a supporting plate, the supporting plate is slidably connected to the mounting hole, one side of the supporting plate is fixedly connected to the mounting frame through a clamping assembly, a fixing hole is provided between the top and the supporting plate, and a supporting orifice plate is fixedly connected to the inner wall of the fixing hole. The utility model relates to the field of chromatographic analysis technology. The gas chromatograph with filtering function has a filter assembly and a mounting frame that can be disassembled by a clamping assembly to connect the carrier plate, and the carrier frame and the carrier plate are connected by an adsorption type, which is convenient for disassembly of the filter net, and then convenient for replacement and cleaning of the filter net. The structure is scientific and reasonable, and the use is safe and convenient, which improves the practicality of the filter assembly. In the process of realizing the utility model, the inventor found that at least the following problems in the prior art have not been solved: although the filter assembly and the mounting frame are disassembled by a clamping assembly to connect the carrier plate, and the carrier frame and the carrier plate are connected by an adsorption type, which is convenient for disassembly of the filter net, and then convenient for replacement of the filter net. The structure is scientific and reasonable, safe and convenient to use, and the practicality of the filter assembly is improved. The air filter element of the gas chromatograph with filtering function is directly set inside the injection cylinder, which brings great difficulties to the replacement and cleaning of the air filter element. During use, the traditional gas chromatograph with filtering function is more cumbersome to disassemble and assemble the filter. The filter cylinder needs to be dismantled before the filter can be taken out, which will waste a lot of time. Moreover, when the gas enters the filter cylinder, the speed of the gas passing through the filter is slow, which easily causes the gas to accumulate in the filter cylinder, affecting the detection efficiency. For this reason, a new technical solution needs to be designed to solve it. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a gas chromatograph with a filtering function to solve the current traditional gas chromatograph with a filtering function. The disassembly and assembly of the filter is relatively cumbersome, and the filter cartridge needs to be dismantled before the filter can be taken out, which wastes a lot of time. Moreover, when the gas enters the filter cartridge, the speed at which the gas passes through the filter is slow, which easily causes the gas to accumulate in the filter cartridge, affecting the technical problem of detection efficiency.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: design a gas chromatograph with filtering function, including a filtering cylinder, and also including:

[0006] Multiple arc-shaped holes are opened at the front end of the filter cylinder;

[0007] The filter mechanism is rotatably connected to one side of the plurality of arc-shaped holes, which can not only perform multiple filtrations, but also can conveniently remove and replace the filter structure. The filter mechanism includes a plurality of hinges, and the plurality of hinges are rotatably connected to one side of the plurality of arc-shaped holes, and an arc-shaped card is fixed to the other side of the hinge;

[0008] A fixing ring is fixed on one side of the arc-shaped clamping plate, and filter screens are installed on both upper and lower ends of the fixing ring. The fixing ring and the filter screen are both located in the arc-shaped hole.

[0009] Preferably, one end of a fixing rod is fixed to both sides inside the fixing ring, a motor is fixed to the other end of the fixing rod, a motor shaft is connected to the top of the motor, and an exhaust fan blade is installed on the top of the motor shaft.

[0010] Preferably, the top of the filter cylinder is connected to a sampling tube, and the top of the sampling tube is connected to a one-way valve.

[0011] Preferably, the bottom of the filter cylinder is connected to an analyzer body, and a display screen is installed on the top of the front end of the analyzer body.

[0012] Preferably, an operation panel is installed at the bottom of the front end of the analyzer body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model combines the filter cartridge, the arc hole and the hinge, and can utilize the hinge to drive the arc clamping plate to move. Since the arc clamping plate is connected to the fixing ring, the filter screen can be driven to be directly rotated out of the filter cartridge when the arc clamping plate moves, thereby conveniently disassembling and replacing the filter screen, thereby improving the disassembly and assembly efficiency of the filter screen, without removing the entire filter cartridge, and solving the technical problem that the traditional gas chromatograph with filtering function has the problem that the disassembly and assembly of the filter screen is rather cumbersome, and the filter cartridge needs to be removed first before the filter screen can be taken out, which wastes a lot of time.

[0015] 2. The utility model combines a fixing ring, a motor and exhaust fan blades. When the gas enters the filter cartridge, multiple motors can drive the exhaust fan blades to rotate, thereby actively drawing in multiple gases, allowing the gas to quickly pass through multiple filter screens for filtration, and allowing the gas to quickly enter the main body of the analyzer, thereby solving the technical problem that when the gas enters the filter cartridge, the speed at which the gas passes through the filter screen is slow, which easily causes gas accumulation in the filter cartridge and affects the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view structure of the fixing ring and the filter screen of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the fixing ring of the utility model.

[0019] In the figure: 1. Analyzer body; 101. Display screen; 102. Operation panel; 2. Filter cylinder; 201. Hinge; 202. Arc hole; 203. Arc clamping plate; 204. Injection tube; 205. One-way valve; 206. Fixing ring; 207. Filter screen; 3. Fixing rod; 301. Motor; 302. Motor shaft; 303. Fan blades. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Example 1: A gas chromatograph with filtering function, see Figures 1 to 3, including a filter cylinder 2, and also including: a plurality of arc holes 202, which are opened at the front end of the filter cylinder 2; a filtering mechanism, which is rotatably connected to one side of the plurality of arc holes 202, can not only perform multiple filtering, but also can conveniently take out and replace the filtering structure, the filtering mechanism includes a plurality of hinges 201, the plurality of hinges 201 are rotatably connected to one side of the plurality of arc holes 202, and an arc clamping plate 203 is fixed on the other side of the hinge 201; a fixing ring 206 is fixed on one side of the arc clamping plate 203, and filter screens 207 are installed at both the upper and lower ends of the fixing ring 206, and the fixing ring 206 and the filter screen 207 are both located in the arc hole 202. When the gas enters the interior of the filter cylinder 2 from the sampling tube 204, it will pass through the plurality of filter screens 207 to filter the gas. When the filter screen 207 needs to be filtered, During disassembly and assembly, the arc-shaped clamping plate 203 can be driven to move through the hinge 201, and the arc-shaped clamping plate 203 will drive the fixing ring 206 to move, and the fixing ring 206 will drive the filter 207 to move, so that the fixing ring 206 and the filter 207 can pass through the arc-shaped hole 202 and move out of the filter cartridge. After the removal is completed, the staff can disassemble and replace the filter 207. After the disassembly and replacement are completed, the fixing ring 206 and the filter 207 are pushed into the filter cartridge body 2, thereby improving the disassembly and assembly efficiency of the filter 207, without removing the entire filter cartridge, solving the technical problem that the traditional gas chromatograph with filtering function is relatively cumbersome for disassembly and assembly of the filter 207, and the filter cartridge needs to be removed first before the filter 207 can be taken out, which will waste a lot of time.

[0022] For details, see Figure 3 One end of the fixing rod 3 is fixed on both sides of the inside of the fixing ring 206, and a motor 301 is fixed on the other end of the fixing rod 3. The top of the motor 301 is connected to a motor shaft 302, and an exhaust fan blade 303 is installed on the top of the motor shaft 302. In the process of gas entering the filter cartridge, after turning on multiple motors 301, the motor 301 drives the motor shaft 302, and the motor shaft 302 drives the exhaust fan blade 303 to rotate, thereby actively drawing in multiple gases, allowing the gas to quickly pass through multiple filter screens 207 for filtration, and enabling the gas to quickly enter the analyzer body 1, thereby solving the technical problem that when the gas enters the filter cartridge, the speed at which the gas passes through the filter screen 207 is slow, which easily causes the gas to accumulate in the filter cartridge, affecting the detection efficiency.

[0023] For further information, see Figure 1 The top of the filter cylinder 2 is connected to a sample injection tube 204 , and the top of the sample injection tube 204 is connected to a one-way valve 205 .

[0024] It is worth noting that see Figure 1 The bottom of the filter cylinder 2 is connected to the analyzer body 1, and a display screen 101 is installed on the top of the front end of the analyzer body 1.

[0025] It is worth noting that see Figure 1 An operation panel 102 is installed at the bottom of the front end of the analyzer body 1.

[0026] When using a gas chromatograph with a filtering function, the hinge 201 can be used to drive the arc-shaped card plate 203 to move, and the arc-shaped card plate 203 can drive the fixing ring 206 to move, and the fixing ring 206 can drive the filter 207 to move, so that the fixing ring 206 and the filter 207 pass through the arc-shaped hole 202 and move out of the filter cartridge. After the removal is completed, the staff can disassemble and replace the filter 207. After the disassembly and replacement are completed, the fixing ring 206 and the filter 207 are pushed into the filter cartridge body 2, which improves the disassembly and assembly efficiency of the filter 207 without removing the entire filter cartridge. In the process of gas entering the filter cartridge, by turning on multiple motors 301, the motors 301 drive the motor shafts 302, and the motor shafts 302 drive the exhaust fan blades 303 to rotate, so as to actively draw in multiple gases, so that the gas quickly passes through the multiple filter screens 207 for filtering, and the gas can quickly enter the analyzer body 1.

[0027] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A gas chromatograph with filtering function, comprising a filtering cylinder (2), characterized in that: Also includes: A plurality of arc-shaped holes (202) are provided at the front end of the filter cylinder (2); A filtering mechanism is rotatably connected to one side of the plurality of arc-shaped holes (202), which can not only perform multiple filtering, but also facilitate the removal and replacement of the filtering structure, the filtering mechanism comprising a plurality of hinges (201), the plurality of hinges (201) being rotatably connected to one side of the plurality of arc-shaped holes (202), an arc-shaped clamping plate (203) being fixed to the other side of the hinge (201), the arc-shaped clamping plate (203) being located in the arc-shaped hole (202); A fixing ring (206) is fixed on one side of the arc-shaped clamping plate (203), and filtering nets (207) are installed at both upper and lower ends of the fixing ring (206). Both the fixing ring (206) and the filtering net (207) are located in the arc-shaped hole (202).

2. A gas chromatograph with filtering function as claimed in claim 1, characterized in that: One end of a fixing rod (3) is fixed to both sides of the fixing ring (206), a motor (301) is fixed to the other end of the fixing rod (3), a motor shaft (302) is connected to the top of the motor (301), and an exhaust fan blade (303) is installed on the top of the motor shaft (302).

3. A gas chromatograph with filtering function as claimed in claim 1, characterized in that: The top of the filter cylinder (2) is connected to a sample injection tube (204), and the top of the sample injection tube (204) is connected to a one-way valve (205).

4. A gas chromatograph with filtering function as claimed in claim 1, characterized in that: The bottom of the filter cylinder (2) is connected to the analyzer body (1), and a display screen (101) is installed on the top of the front end of the analyzer body (1).

5. A gas chromatograph with filtering function as claimed in claim 4, characterized in that: An operation panel (102) is installed at the bottom of the front end of the analyzer body (1).

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