Gas generator with external filtering device

Abstract

The utility model relates to the technical field of gas chromatography detection auxiliary devices, in particular to a gas generator with an external filtering device, which comprises a working table, a nitrogen generator, a hydrogen generator, an air generator and a gas chromatograph are sequentially arranged on the surface of the working table from front to back, a carrier is fixedly mounted on the working table, and a filter is arranged on the carrier. A filter device is arranged at the upper end of the carrying frame and comprises three filter cartridges, a cotton filter layer, a water absorption particle filter layer and an activated carbon filter layer, the filter cartridges are sequentially filled with the cotton filter layer, the water absorption particle filter layer and the activated carbon filter layer from front to back, sealing covers are fixedly installed on the two sides of each filter cartridge, and the filter cartridges are arranged on the upper portion of the carrying frame. The problem that the size of a traditional built-in filter is limited is solved, the overall filtering path of gas is increased, the passing gas can be fully filtered, and when the filtering device needs to be replaced and maintained, a corresponding generator does not need to be stopped, so that interruption of gas production and pre-storage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography detection auxiliary devices, in particular to a gas generator with an external filtering device. Background Art

[0002] Gas chromatograph is an important instrument for separating and measuring low-boiling mixed components. It can be used for instrumental analysis experiments in chemical, bioengineering, and food industries, and can also be used for scientific research and routine analysis. The gas chromatography detection link requires the use of a gas generator to provide auxiliary gas for the gas chromatograph. The product liquid to be detected is input, heated into steam, and then fused with the gas generated by different gas generators for detection to obtain relevant detection data. Although existing gas generators usually have built-in filters, due to the limited volume of the built-in filter, its overall structure and filtration path are short, and insufficient filtration often occurs. Moreover, if the filter needs to be replaced and maintained, the corresponding generator must be shut down, resulting in interruption of gas production and storage, which is easy to cause inconvenience during use. Therefore, we propose a gas generator with an external filtering device. Utility Model Content

[0003] The purpose of the utility model is to provide a gas generator with an external filtering device to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A gas generator with an external filtering device comprises a workbench, on the surface of which a nitrogen generator, a hydrogen generator, an air generator and a gas chromatograph are placed in sequence from front to back, a carrier is fixedly mounted on the workbench, a filtering device is arranged at the upper end of the carrier, the filtering device comprises three filter cartridges, a cotton filter layer, a water-absorbing particle filter layer and an activated carbon filter layer, the cotton filter layer, the water-absorbing particle filter layer and the activated carbon filter layer are filled in the filter cartridge in sequence from front to back, the filter cartridges are placed on the carrier at intervals, and the filter cartridges are arranged at intervals. Both sides are fixedly installed with sealing covers, and the sides of the sealing covers are penetrated by ventilation joints. The gas outlet ports of the nitrogen generator, hydrogen generator and air generator are fixedly connected with gas hoses, and an electromagnetic check valve is fixedly provided on the gas hose. A rotating sleeve a is rotatably provided at one end of the gas hose. The gas inlet port of the gas chromatograph is fixedly connected with a ventilation hose, and a rotating sleeve b is rotatably provided at one end of the ventilation hose. The rotating sleeve a and the rotating sleeve b are respectively threadedly sleeved on the outside of the ventilation joints distributed on the front and back sides.

[0006] Preferably, a side frame is fixedly mounted on the carrier, a pressure block is slidably connected to the side frame, a screw shaft is rotatably mounted on the side frame via a connecting seat, and the pressure block is threadedly connected to the screw shaft.

[0007] Preferably, the upper end of the screw shaft movably passes through the top of the side frame and extends upward, and the upper end of the screw shaft is fixedly connected with a knob block.

[0008] Preferably, arc-shaped grooves are formed on the surfaces of the carrier and the pressing block, and the diameter of the arc-shaped grooves is matched with the outer diameter of the filter cartridge.

[0009] Preferably, the water-absorbing particle filter layer is a component made of color-changing silica gel water-absorbing particles.

[0010] Preferably, the filter cartridge is a component made of transparent plastic.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model solves the problem of limited volume of traditional built-in filters by externally connecting a nitrogen generator, a hydrogen generator and an air generator to a filter device, which is beneficial to increasing the overall filtering path for the gas. The cotton filter layer, the water-absorbing particle filter layer and the activated carbon filter layer filled in the filter cartridge can fully filter the passing gas. When the filter device needs to be replaced and maintained, only the electromagnetic check valve on the corresponding gas guide hose is closed without shutting down the corresponding generator, thereby preventing interruption of gas production and pre-storage, avoiding inconvenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic cross-sectional view of a gas generator with an external filtering device according to the utility model;

[0014] Figure 2 This is a three-dimensional structural schematic diagram of a gas generator with an external filtering device according to the utility model;

[0015] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0016] In the figure: 1. workbench; 101. carrier; 102. side frame; 1021. connecting seat; 103. pressing block; 104. screw shaft; 105. knob block; 2. gas chromatograph; 3. nitrogen generator; 4. hydrogen generator; 5. air generator; 6. filtering device; 601. filter cartridge; 602. cotton filter layer; 603. water-absorbing particle filter layer; 604. activated carbon filter layer; 605. sealing cover; 606. ventilation joint; 7. air guide hose; 701. electromagnetic check valve; 702. rotating sleeve a; 8. ventilation hose; 801. rotating sleeve b; 9. arc groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3 As shown, a technical solution provided by the utility model:

[0019] A gas generator with an external filtering device comprises a workbench 1, on the surface of the workbench 1 are placed a nitrogen generator 3, a hydrogen generator 4, an air generator 5 and a gas chromatograph 2 in sequence from front to back, a carrier 101 is fixedly installed on the workbench 1, a filtering device 6 is arranged at the upper end of the carrier 101, and the filtering device 6 comprises three filter cartridges 601, a cotton filter layer 602, a water-absorbing particle filter layer 603 and an activated carbon filter layer 604, the cotton filter layer 602, the water-absorbing particle filter layer 603 and the activated carbon filter layer 604 are filled in the filter cartridge 601 in sequence from front to back, the filter cartridges 601 are placed on the carrier 101 at intervals, and both sides of the filter cartridge 601 are fixedly installed with a cover 60 5, a ventilation joint 606 is provided through the side of the cover 605, the gas outlet ports of the nitrogen generator 3, the hydrogen generator 4 and the air generator 5 are fixedly connected with a gas guide hose 7, an electromagnetic check valve 701 is fixedly provided on the gas guide hose 7, a rotating sleeve a702 is rotatably provided at one end of the gas guide hose 7, and a ventilation hose 8 is fixedly connected to the gas inlet port of the gas chromatograph 2, a rotating sleeve b801 is rotatably provided at one end of the ventilation hose 8, the rotating sleeve a702 and the rotating sleeve b801 are respectively threadedly sleeved on the outside of the ventilation joint 606 distributed on the front and rear sides, so that the nitrogen generator 3, the hydrogen generator 4 and the air generator 5 can be externally connected to the filter device 6.

[0020] As a preferred implementation in this embodiment, Figure 2 and Figure 3As shown, a side frame 102 is fixedly mounted on the carrier 101, a pressing block 103 is slidably connected to the side frame 102, a screw shaft 104 is rotatably mounted on the side frame 102 through a connecting seat 1021, and the pressing block 103 is threadedly connected to the screw shaft 104. The upper end of the screw shaft 104 movably passes through the top of the side frame 102 and extends upward, and a knob block 105 is fixedly connected to the upper end of the screw shaft 104. The surfaces of the carrier 101 and the pressing block 103 are both provided with an arc groove 9, and the diameter of the arc groove 9 is adapted to the outer diameter of the filter cartridge 601. By using the knob block 105 to rotate the screw shaft 104 in the forward direction, the arc groove 9 of the pressing block 103 can be driven to press against the filter cartridge 601, so that the filter cartridge 601 can be clamped and limited.

[0021] As a preferred implementation in this embodiment, Figure 1 As shown, the water-absorbing particle filter layer 603 is a component made of color-changing silica gel water-absorbing particles, so that the water-absorbing particle filter layer 603 has good water absorption performance. The filter cartridge 601 is a component made of transparent plastic, which is convenient for checking the color of the filter material in the filter cartridge 601 at any time.

[0022] Working principle:

[0023] During use, the electromagnetic check valve 701 on the gas guide hose 7 is opened, and the generated gas can be passed into each filter cartridge 601 through the gas guide hose 7 by using the nitrogen generator 3, the hydrogen generator 4 and the air generator 5. The cotton filter layer 602, the water-absorbing particle filter layer 603 and the activated carbon filter layer 604 filled in the filter cartridge 601 can be used to fully filter the passing gas, and the filtered gas finally enters the gas chromatograph 2 through the ventilation hose 8 for use as auxiliary gas. When it is necessary to replace and maintain the filter device 6, the electromagnetic check valve 701 on the corresponding gas guide hose 7 is closed without shutting down the corresponding generator, and the rotating sleeve a702 and the rotating sleeve b801 are twisted to separate them from the ventilation joint 606. By using the knob block 105 to rotate the screw shaft 104 in the opposite direction, the pressing block 103 can be driven away from the filter cartridge 601, and the filter device 6 can be disassembled and taken out for replacement and maintenance.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas generator with an external filtering device, comprising a workbench (1), on the surface of which a nitrogen generator (3), a hydrogen generator (4), an air generator (5) and a gas chromatograph (2) are placed in order from front to back, characterized in that: A carrier (101) is fixedly mounted on the workbench (1), and a filter device (6) is provided at the upper end of the carrier (101). The filter device (6) comprises three filter cartridges (601), a cotton filter layer (602), a water-absorbing particle filter layer (603), and an activated carbon filter layer (604). The cotton filter layer (602), the water-absorbing particle filter layer (603), and the activated carbon filter layer (604) are sequentially filled in the filter cartridge (601) from front to back. The filter cartridges (601) are placed on the carrier (101) at intervals. Covers (605) are fixedly mounted on both sides of the filter cartridges (601). The side of the cover (605) is provided with a A ventilation joint (606) is provided, the outlet ports of the nitrogen generator (3), the hydrogen generator (4) and the air generator (5) are all fixedly connected to a gas guide hose (7), a solenoid check valve (701) is fixedly provided on the gas guide hose (7), one end of the gas guide hose (7) is rotatably provided with a rotating sleeve a (702), the inlet port of the gas chromatograph (2) is fixedly connected to a ventilation hose (8), one end of the ventilation hose (8) is rotatably provided with a rotating sleeve b (801), the rotating sleeve a (702) and the rotating sleeve b (801) are respectively threadedly sleeved on the outside of the ventilation joint (606) distributed on the front and rear sides.

2. A gas generator with an external filtering device according to claim 1, characterized in that: A side frame (102) is fixedly mounted on the carrier (101), a pressing block (103) is slidably connected to the side frame (102), a screw shaft (104) is rotatably mounted on the side frame (102) via a connecting seat (1021), and the pressing block (103) is threadedly connected to the screw shaft (104).

3. A gas generator with an external filtering device according to claim 2, characterized in that: The upper end of the screw shaft (104) movably passes through the top of the side frame (102) and extends upwards, and the upper end of the screw shaft (104) is fixedly connected to a knob block (105).

4. A gas generator with an external filtering device according to claim 2, characterized in that: The surfaces of the carrier (101) and the pressing block (103) are both provided with arc-shaped grooves (9), and the diameter of the arc-shaped grooves (9) is compatible with the outer diameter of the filter cartridge (601).

5. A gas generator with an external filtering device according to claim 1, characterized in that: The water-absorbing particle filter layer (603) is a component made of color-changing silica gel water-absorbing particles.

6. A gas generator with an external filtering device according to claim 1, characterized in that: The filter cartridge (601) is a component made of transparent plastic.

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