Drying and filtering device of gas chromatograph

Abstract

The utility model belongs to the field of meteorological chromatographic instruments, and particularly relates to a drying and filtering device of a meteorological chromatographic instrument, which comprises a bottom plate, two sides of the top of the bottom plate are respectively and fixedly connected with a collecting box and an instrument body, the top of the inner cavity of the collecting box is fixedly connected with a sealing assembly, and the top of the collecting box is communicated with a filtering box; by arranging the cleaning mechanism, after a motor in the cleaning mechanism is started, a brush plate can be driven to move up and down in a reciprocating mode through cooperation of a mechanical structure to clean the surface of the filter plate, the surface of the filter plate is prevented from being blocked by dust, the gas flowing efficiency is improved, and meanwhile when the brush plate moves to the lowermost portion, a pressing rod can be driven to extrude a sealing assembly; according to the gas chromatograph, the sealing assembly is removed from the communicating position of the filtering box and the collecting box, so that the cleaned dust falls into the collecting box, the manual cleaning process is omitted, the dust can be conveniently collected, and the problems that in the prior art, a gas chromatograph cannot be rapidly cleaned, and impurities are inconvenient to discharge are solved.

Description

Technical Field

[0001] The utility model relates to the field of gas chromatographs, and particularly to a drying and filtering device for a gas chromatograph. Background Technique

[0002] A gas chromatograph is an instrument that uses chromatographic separation technology and detection technology to qualitatively and quantitatively analyze complex mixtures of multiple components. It can usually be used to analyze organic substances in soil that are thermally stable and have a boiling point not exceeding 500 °C, such as volatile organic compounds, organochlorines, organophosphorus, polycyclic aromatic hydrocarbons, phthalic acid esters, etc. There are many types of gas chromatographs with different functions, but their basic structures are similar. A gas chromatograph generally consists of a gas path system, an injection system, a separation system, a detection and temperature control system, and a recording system. Before detection, most of the gases to be detected need to be filtered before entering the gas chromatograph.

[0003] However, during the long-term use of the current drying and filtering device of the gas chromatograph, large particulate impurities inside the gas adhere to the filter screen, which will reduce the gas flow rate, resulting in a slower filtering speed, affecting the detection efficiency of the gas, and it is impossible to quickly clean the filter screen. Manual cleaning is time-consuming and laborious, and it is also inconvenient to discharge the filtered impurities. Therefore, a drying and filtering device for a gas chromatograph is proposed to solve the above problems. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve the problems in the prior art that the gas chromatograph cannot be quickly cleaned and it is inconvenient to discharge impurities, the utility model proposes a drying and filtering device for a gas chromatograph.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a drying and filtering device for a gas chromatograph, including a bottom plate. On both sides of the top of the bottom plate, a collection box and an instrument body are respectively fixedly connected. At the top of the inner cavity of the collection box, a sealing component is fixedly connected. The top of the collection box is communicated with a filter box. Between the right side of the filter box and the instrument body, a connecting pipe is communicated. Between the top and the bottom of the inner cavity of the filter box, a filter plate is fixedly connected. On the right side of the inner cavity of the filter box, a moisture-absorbing block is fixedly connected. On the top of the filter box, a cleaning mechanism is fixedly connected.

[0006] The cleaning mechanism includes an adjustment box. The bottom of the adjustment box is fixedly connected to the filter box. On the left side of the adjustment box, a motor is fixedly connected. The right side of the output end of the motor penetrates into the inner cavity of the adjustment box and is fixedly connected to a rotating disk. On the right side of the rotating disk, a rotating block is fixedly connected. The surface of the rotating block is sleeved with a lifting shell. The bottom of the lifting shell is fixedly connected to a lifting frame. The end of the lifting frame far away from the lifting shell penetrates into the inner cavity of the filter box and is fixedly connected to a brush plate. At the bottom of the lifting frame, a pressure rod is fixedly connected.

[0007] Preferably, the closing assembly includes a baffle, and mounting blocks are movably connected to the right sides of the front and rear sides of the baffle, and the tops of the mounting blocks are fixedly connected to the inner wall of the collection box.

[0008] Preferably, pressing plates are fixedly connected to the left sides of the front and rear sides of the baffle, and support frames are fixedly connected to the top of the inner cavity of the collection box and on opposite sides of the two pressing plates, and springs are fixedly connected between the bottoms of the pressing plates and the support frames.

[0009] Preferably, the top of the baffle contacts the inner wall of the collection box, and the surface of the baffle is movably connected to the mounting block through a rotating shaft.

[0010] Preferably, a maintenance door is movably connected to the top of the left side of the collection box through a hinge, and a handle is fixedly connected to the left side of the maintenance door, and the moisture absorption block is made of sponge.

[0011] Preferably, guide blocks are fixedly connected to the bottoms of the inner cavity of the collection box and the left side of the bottom of the inner cavity of the filter box, and the guide blocks are triangular in shape.

[0012] Preferably, an air inlet pipe is connected to the left side of the filter box, a limiting frame is fixedly connected to the top of the lifting shell, and the top of the limiting frame penetrates through the top of the adjustment box.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By setting a cleaning mechanism in the present utility model, after starting the motor therein, the brush plate can be driven to move up and down reciprocally through the cooperation of mechanical structures to clean the surface of the filter plate, avoiding the surface of the filter plate being blocked by dust, improving the gas flow efficiency. At the same time, when the brush plate moves to the lowest position, it can drive the pressing rod to squeeze the closing assembly, releasing the closing of the connection between the filter box and the collection box, so that the cleaned dust falls into the collection box, which not only saves the manual cleaning process, but also can conveniently collect the dust, solving the problems in the prior art that the gas chromatograph cannot be quickly cleaned and it is inconvenient to discharge impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the drying and filtering device of the gas chromatograph of the present utility model;

[0017] Figure 2 This is a structural cross-sectional view of the collection box and the adjustment box of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the closing assembly of the present utility model;

[0019] Figure 4 This is a structural cross-sectional view of the cleaning mechanism of the present utility model.

[0020] In the figure: 1, bottom plate; 2, collection box; 3, instrument body; 4, closing assembly; 401, baffle; 402, mounting block; 403, pressing plate; 404, support frame; 405, spring; 5, filter box; 6, connecting pipe; 7, filter plate; 8, moisture absorption block; 9, cleaning mechanism; 901, adjustment box; 902, motor; 903, rotating disk; 904, rotating block; 905, lifting shell; 906, lifting frame; 907, brush plate; 908, pressing rod; 909, limiting frame. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 For a further detailed description of the present application,

[0023] The embodiments of the present application disclose a drying and filtering device for a gas chromatograph. Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a drying and filtering device for a gas chromatograph includes a bottom plate 1. On both sides of the top of the bottom plate 1, a collection box 2 and an instrument body 3 are respectively fixedly connected. At the top of the inner cavity of the collection box 2, a closing assembly 4 is fixedly connected. The top of the collection box 2 is communicated with a filter box 5. Between the right side of the filter box 5 and the instrument body 3, a connecting pipe 6 is communicated. Between the top and the bottom of the inner cavity of the filter box 5, a filter plate 7 is fixedly connected. On the right side of the inner cavity of the filter box 5, a moisture absorption block 8 is fixedly connected. At the top of the filter box 5, a cleaning mechanism 9 is fixedly connected;

[0024] The cleaning mechanism 9 includes an adjustment box 901. The bottom of the adjustment box 901 is fixedly connected to the filter box 5. A motor 902 is fixedly connected to the left side of the adjustment box 901. The right side of the output end of the motor 902 penetrates into the inner cavity of the adjustment box 901 and is fixedly connected to a rotating disk 903. A rotating block 904 is fixedly connected to the right side of the rotating disk 903. A lifting shell 905 is sleeved on the surface of the rotating block 904. A lifting frame 906 is fixedly connected to the bottom of the lifting shell 905. One end of the lifting frame 906 away from the lifting shell 905 penetrates into the inner cavity of the filter box 5 and is fixedly connected to a brush plate 907. A pressing rod 908 is fixedly connected to the bottom of the lifting frame 906; by setting the cleaning mechanism 9, after the motor 902 therein is started, the brush plate 907 can be driven to reciprocate up and down through the cooperation of the mechanical structure to clean the surface of the filter plate 7, avoiding the surface of the filter plate 7 from being blocked by dust, improving the gas flow efficiency. At the same time, when the brush plate 907 moves to the lowest position, the pressing rod 908 can be driven to squeeze the closing component 4, releasing the closing of the connection between the filter box 5 and the collection box 2 by the closing component 4, so that the cleaned dust falls into the collection box 2. This not only saves the process of manual cleaning, but also can conveniently collect the dust, solving the problem that the existing gas chromatograph cannot be quickly cleaned and the impurities are not conveniently discharged in the prior art.

[0025] Refer to Figure 2 and Figure 3 , the closing component 4 includes a baffle 401. Installation blocks 402 are movably connected to the right sides of the front and rear sides of the baffle 401. The tops of the installation blocks 402 are fixedly connected to the inner wall of the collection box 2. Pressing plates 403 are fixedly connected to the left sides of the front and rear sides of the baffle 401. Support frames 404 are fixedly connected to the top of the inner cavity of the collection box 2 and on opposite sides of the two pressing plates 403. A spring 405 is fixedly connected between the bottom of the pressing plate 403 and the support frame 404. The top of the baffle 401 is in contact with the inner wall of the collection box 2. The surface of the baffle 401 and the installation block 402 are movably connected through a rotating shaft; by setting the baffle 401, it can play a role in closing the connection between the filter box 5 and the collection box 2. By setting the installation block 402 and the rotating shaft, it is convenient for the installation and use of the baffle 401. By setting the pressing plate 403, it can be used to squeeze the spring 405. By setting the support frame 404, it can be used to support the spring 405. By setting the spring 405, it is convenient for the pressing plate 403 to move upward for resetting.

[0026] Refer to Figure 1 and Figure 2 , the top of the left side of the collection box 2 is movably connected with a maintenance door through a hinge, and a handle is fixedly connected to the left side of the maintenance door. The moisture absorption block 8 is made of sponge; by setting the maintenance door, it is convenient to clean the collection box 2. By setting the handle, it is convenient for the user to operate the maintenance door. By setting the sponge, it can remove the moisture in the gas.

[0027] Refer toFigure 2 A diversion block is fixedly connected to the bottom of the inner cavity of the collection box 2 and the left side of the bottom of the inner cavity of the filter box 5, and the diversion block is triangular in shape; by providing the diversion block, the function of guiding the flow can be achieved.

[0028] Refer to Figure 1 、 Figure 2 and Figure 4 A gas inlet pipe is connected to the left side of the filter box 5, and a limit frame 909 is fixedly connected to the top of the lifting shell 905, and the top of the limit frame 909 penetrates through the top of the adjustment box 901; by providing the gas inlet pipe, it is convenient to introduce gas, and by providing the limit frame 909, the stability of the movement of the lifting shell 905 can be improved.

[0029] Working principle: The gas enters the filter box 5 through the gas inlet pipe. After being filtered by the filter plate 7 and dehumidified by the moisture absorption block 8, the gas enters the instrument body 3 through the connecting pipe 6. Controlling the motor 902 to start can drive the rotating disk 903 and the rotating block 904 to rotate. The rotation of the rotating block 904 can drive the lifting shell 905 to move up and down reciprocally. The lifting shell 905 drives the lifting frame 906, the brush plate 907 and the pressing rod 908 to move up and down reciprocally. The up and down movement of the brush plate 907 can clean the surface of the filter plate 7. When the pressing rod 908 moves to the lowest position, it will squeeze the baffle plate 401, driving the baffle plate 401 to rotate downward around the rotating shaft. The baffle plate 401 drives the pressing plate 403 to squeeze the spring 405, releasing the blockage of the connection between the filter box 5 and the collection box 2 by the baffle plate 401. At this time, the dust cleaned from the surface of the filter plate 7 will fall into the collection box 2. When the pressing rod 908 moves upward, the restriction on the baffle plate 401 will be released. At this time, the spring 405 will reset and drive the baffle plate 401 to move upward to close the connection. Starting the motor 902 can not only drive the brush plate 907 to clean the filter plate 7, but also make the cleaned dust fall into the collection box 2, solving the problems in the prior art that the gas chromatograph cannot be quickly cleaned and it is inconvenient to discharge impurities.

[0030] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A drying and filtering device for a gas chromatograph, characterized in that: The apparatus comprises a bottom plate (1), wherein a collecting box (2) and an instrument body (3) are fixedly connected to both sides of the top of the bottom plate (1), a sealing component (4) is fixedly connected to the top of the inner cavity of the collecting box (2), a filter box (5) is connected to the top of the collecting box (2), a connecting pipe (6) is connected between the right side of the filter box (5) and the instrument body (3), a filter plate (7) is fixedly connected between the top and bottom of the inner cavity of the filter box (5), a moisture absorption block (8) is fixedly connected to the right side of the inner cavity of the filter box (5), and a cleaning mechanism (9) is fixedly connected to the top of the filter box (5); The cleaning mechanism (9) comprises an adjusting box (901), the bottom of which is fixedly connected to the filter box (5), the left side of the adjusting box (901) is fixedly connected to a motor (902), the right side of the output end of the motor (902) penetrates into the inner cavity of the adjusting box (901) and is fixedly connected to a rotating disk (903), the right side of the rotating disk (903) is fixedly connected to a rotating block (904), a lifting shell (905) is sleeved on the surface of the rotating block (904), the bottom of the lifting shell (905) is fixedly connected to a lifting frame (906), one end of the lifting frame (906) away from the lifting shell (905) penetrates into the inner cavity of the filter box (5) and is fixedly connected to a brush plate (907), and the bottom of the lifting frame (906) is fixedly connected to a pressure rod (908).

2. The drying and filtering device of a gas chromatograph according to claim 1, characterized in that: The sealing component (4) comprises a baffle (401), and the right sides of the front and rear sides of the baffle (401) are movably connected to mounting blocks (402), and the top of the mounting block (402) is fixedly connected to the inner wall of the collection box (2).

3. The drying and filtering device of a gas chromatograph according to claim 2, characterized in that: The left sides of the front and rear sides of the baffle (401) are fixedly connected to a pressure plate (403), the top of the inner cavity of the collection box (2) and the side opposite to the two pressure plates (403) are fixedly connected to a support frame (404), and a spring (405) is fixedly connected between the bottom of the pressure plate (403) and the support frame (404).

4. The drying and filtering device of a gas chromatograph according to claim 2, characterized in that: The top of the baffle (401) contacts the inner wall of the collection box (2), and the surface of the baffle (401) is movably connected to the mounting block (402) via a rotating shaft.

5. The drying and filtering device of a gas chromatograph according to claim 1, characterized in that: The top of the left side of the collecting box (2) is movably connected to an inspection door via a hinge, and a handle is fixedly connected to the left side of the inspection door. The moisture absorbing block (8) is made of sponge.

6. The drying and filtering device of a gas chromatograph according to claim 1, characterized in that: The bottom of the inner cavity of the collection box (2) and the left side of the bottom of the inner cavity of the filter box (5) are both fixedly connected with guide blocks, and the shape of the guide blocks is triangular.

7. The drying and filtering device of a gas chromatograph according to claim 1, characterized in that: The left side of the filter box (5) is connected to an air intake pipe, and the top of the lifting shell (905) is fixedly connected to a limiting frame (909), and the top of the limiting frame (909) penetrates to the top of the regulating box (901).

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