Gas filtering device

Abstract

The utility model discloses a gas filter device, relates to filter device technical field, including filter cartridge and set up the plug of filter cartridge both sides, the inside of filter cartridge is plugged by the plug to form the filter chamber, be provided with the breathable casing, absorbent cotton and desiccant in the filter chamber, the desiccant is located breathable casing and absorbent cotton, and the absorbent cotton is located in the breathable casing. Vent holes are formed in the end face and the outer ring face of the breathable shell. According to the gas filtering device disclosed by the utility model, the breathable shell, the degreasing cotton and the drying agent are arranged, the degreasing cotton and the drying agent can play a role in intercepting pulverized coal particles and water vapor in airflow and prevent the pulverized coal particles and the water vapor from influencing the detection precision when the pulverized coal particles and the water vapor enter a gas detector, and the gas filtering device has the effect of improving the gas detection precision; and through the arrangement of double sealing, the air tightness of the structure can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, and more specifically to a gas filtering device. Background Art

[0002] Gas filtration device is a device used to remove impurities and harmful substances from gas. It is widely used in many industries and fields, including but not limited to metallurgy, chemical industry, petroleum, papermaking, medicine, food processing, mining, electricity, urban water supply and automobile industry. Its main function is to ensure gas quality, protect equipment from damage, improve production efficiency, and maintain the environment and personnel health. Gas filtration device is used in a variety of equipment and instruments, such as gas content meter. Gas content meter is used to detect the gas content in coal samples and estimate the gas content in the coal seams in the area. It can also detect the gas decomposition rate in coal samples and evaluate the operation risk. If it is too fast and the content is too high, it will be dangerous during mining.

[0003] When testing the gas content in a designated area, a certain amount of coal blocks are placed in a container and crushed into particles, which are then crushed in a closed manner. The gas generated after the crushing is transported to a gas content meter, and then the gas content is tested. However, crushing the coal blocks will not only generate gas but also a large amount of dust particles. The dust particles will reduce the accuracy of the test. Moreover, when the coal blocks are placed in a container, they will come into contact with the outside air. The water vapor in the air will affect the test results and cause damage to the detection elements.

[0004] Therefore, there is an urgent need for a gas air filter device that can filter dust particles and water vapor. Utility Model Content

[0005] In view of the above problems, the utility model provides a gas filtering device; it has the function of filtering coal powder particles and water vapor in the airflow, which can improve the accuracy of the gas detector during detection. At the same time, through the double sealing setting, it has the function of improving air tightness.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A gas filter device, comprising a filter cartridge and plugs arranged on both sides of the filter cartridge, wherein the interior of the filter cartridge is blocked by the plugs to form a filter cavity, wherein a breathable shell, absorbent cotton and a desiccant are arranged in the filter cavity, wherein the desiccant is located between the breathable shell and the absorbent cotton, and air holes are provided on the end surface and the outer ring surface of the breathable shell;

[0008] A boss is provided on one side of the plug close to the filter cartridge, an outer step groove is provided at the connection between the boss and the plug, an outer thread is provided on the outer ring surface of the outer step groove, an annular groove is provided on the outer ring surface of the boss, a sealing ring is sleeved in the annular groove, and the sealing ring can contact the inner ring surface of the filter cartridge;

[0009] The filter cartridge is provided with inner stepped grooves on both sides thereof which cooperate with the outer stepped grooves, the inner stepped grooves are provided with inner threads which can mesh with the outer threads, the inner stepped grooves are provided with sealing gaskets which are arranged perpendicularly to the inner threads.

[0010] Preferably, one end of the plug away from the filter cartridge is connected to a joint pipe, and the joint pipe is connected to a hose of the detection pipeline.

[0011] Preferably, a threaded anti-slip ring is provided on the outer ring surface of the end of the joint pipe, and the anti-slip ring is triangular in shape.

[0012] Preferably, anti-slip grooves are arranged on the outer annular surface of the plug, and the direction of the anti-slip grooves is the same as the axis.

[0013] Preferably, a convex ring is provided on one side of the outer step groove, the convex ring cooperates with a sealing gasket for sealing, and the convex ring is arranged perpendicular to the external thread.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The device is provided with a breathable shell, absorbent cotton and desiccant. The absorbent cotton and desiccant can intercept coal powder particles and water vapor in the airflow to prevent them from entering the gas detector and affecting the detection accuracy. It has the effect of improving the gas detection accuracy and at the same time, can extend the service life of the detection element. The breathable shell keeps the airflow unobstructed and supports the absorbent cotton and desiccant.

[0016] 2. This device is equipped with an anti-drop ring on the joint pipe. The spiral anti-drop ring can prevent the connecting pipe from falling off, thereby improving the anti-pulling ability of the equipment.

[0017] 3. The device is provided with a sealing ring and a sealing gasket. Through the cooperation of the sealing ring and the sealing gasket, it has a double sealing effect and can avoid the occurrence of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0020] Figure 3It is a three-dimensional schematic diagram of the connection structure between the plug and the boss in the utility model;

[0021] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the filter cartridge and the inner stepped groove of the utility model.

[0022] Reference numerals:

[0023] 101. Filter cartridge; 102. Plug; 103. Filter chamber; 104. Breathable shell; 105. Cotton wool; 106. Desiccant; 107. Boss; 108. External step groove; 109. External thread; 110. Sealing ring; 111. Internal step groove; 112. Internal thread; 113. Sealing gasket; 114. Connecting pipe; 115. Anti-slip ring; 116. Boss ring. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-4 A gas filtering device comprises a filter cartridge 101 and plugs 102 arranged on both sides of the filter cartridge 101. The plugs 102 are blocked on both sides of the filter cartridge 101, so that the interior of the filter cartridge 101 forms a filter chamber 103 isolated from the outside. The interior of the filter cartridge 101 is blocked by the plugs 102 to form a filter chamber 103. A breathable shell 104, absorbent cotton 105 and a desiccant 106 are arranged in the filter chamber 103. The absorbent cotton 105 is located on a side close to an airflow inlet, and the breathable shell 104 is located on a side of an airflow outlet. The desiccant 106 is located between the breathable shell 104 and the absorbent cotton 105. The absorbent cotton 105 is porous and has fine fibers, which can effectively intercept tiny coal powder particles in the airflow. Its fiber structure can absorb and block aerosols, dust, etc., and reduce the content of these substances entering the gas detector. The absorbent cotton 105 has a good filtering effect and can maintain good air permeability without causing airflow blockage.

[0026] Specifically, the desiccant 106 is a plurality of circular spheres of desiccant 106. The circular shape has the largest surface area and can absorb moisture in water to the greatest extent. The desiccant 106 is located between the breathable shell 104 and the absorbent cotton 105. Ventilation holes are provided on the end face and the outer ring surface of the breathable shell 104. The breathable shell 104 is made of PVC material and is provided with a plurality of holes for ventilation. The outer ring surface of the breathable shell 104 is provided with a protruding side ring, which is not shown in the figure, and is used to support the breathable shell 104 in the filter cavity 103 so that it does not shake. At the same time, it is used for airflow to enter the vent holes of the ring surface from the gap supported by the side ring;

[0027] refer to Figure 3 , a boss 107 is provided on the side of the plug 102 close to the filter cartridge 101, and the outer ring surface diameter of the boss 107 is smaller than the filter chamber 103, but the sealing ring 110 on its outer wall can come into contact with the inner wall of the filter chamber 103, thereby achieving a sealing effect, and an outer step groove 108 is provided at the connection between the boss 107 and the plug 102, and the outer step groove 108 and the inner step groove 111 cooperate to enable the external thread 109 to be meshed with the internal thread 112, and at the same time enable the convex ring 116 to be pressed on the sealing gasket 113, and the outer ring surface of the outer step groove 108 is provided with an external thread 109, and the outer ring surface of the boss 107 is provided with an annular groove, and a sealing ring 110 is sleeved in the annular groove, and the sealing ring 110 can come into contact with the inner ring surface of the filter cartridge 101;

[0028] refer to Figure 4 Inner stepped grooves 111 cooperating with the outer stepped grooves 108 are arranged on both sides of the filter cartridge 101, and internal threads 112 meshing with the external threads 109 are arranged in the internal stepped grooves 111, and a sealing gasket 113 is installed in the internal stepped grooves 111. When the plug 102 is installed on the filter cartridge 101, the outer stepped grooves 108 can be pressed on the sealing gasket 113. At the same time, the convex ring 116 protrudes from the outer stepped grooves 108, which can increase the extrusion capacity of the sealing gasket 113 to improve the sealing performance. The sealing gasket 113 is arranged vertically to the internal threads 112.

[0029] Specifically, refer to Figure 1 and Figure 2 The end of the plug 102 away from the filter cartridge 101 is connected to a joint pipe 114, and an air flow channel communicating with the joint pipe 114 is opened inside the plug 102. The air flow can enter the filter cavity 103 after passing through the joint pipe 114 and the plug 102 in turn. The joint pipe 114 is connected to the hose of the detection pipeline.

[0030] Specifically, refer to Figure 2A threaded anti-slip ring 115 is provided on the outer ring surface at the end of the joint pipe 114. When the airflow hose is installed on the joint pipe 114, the hose is rotated along the direction of the anti-slip ring 115, and the hose can be put on the joint pipe 114 little by little. When the hose is pulled, the anti-slip ring 115 prevents the hose from falling off. The anti-slip ring 115 is triangular in shape.

[0031] Specifically, refer to Figure 3 The outer ring surface of the plug 102 is provided with anti-skid patterns to increase friction and facilitate installation and removal of the plug 102 and the filter cartridge 101. The direction of the anti-skid patterns is the same as the axis.

[0032] Specifically, refer to Figure 2 A convex ring 116 is provided on one side of the outer step groove 108, and the convex ring 116 cooperates with the sealing gasket 113 for sealing. The convex ring 116 is provided with multiple layers for squeezing the sealing gasket 113 to increase the sealing performance. The sealing ring 110 is the first seal, and the sealing gasket 113 and the convex ring 116 are the second seal. The convex ring 116 is arranged perpendicular to the external thread 109.

[0033] In this embodiment, the plugs 102 are respectively installed on the same air flow pipeline, one is located on the air inlet pipeline, and the other is on the air outlet pipeline. The airflow to be detected will enter the filter chamber 103 from the joint pipe 114 and the plug 102 at one end. After being filtered by the absorbent cotton 105 and the desiccant 106, the coal powder particles and moisture in the airflow will be intercepted, which plays a role in improving the detection accuracy of the gas detector. The filtered gas will enter the air permeable shell 104 from the through hole on the air permeable shell 104, and then go out from the joint pipe 114 at the other end. Figure 2 , and finally the airflow enters the gas detector from the pipeline.

[0034] The desiccant 106 is spherical in shape, and the circle has the largest surface area. When the airflow flows through the desiccant 106, moisture will be adsorbed by the desiccant 106, thereby removing moisture from the airflow.

[0035] The joint pipe 114 is provided with a spiral anti-slip ring 115, which is triangular in shape. Figure 2 When the air flow duct is installed on the joint pipe 114, it will not fall off easily even if it is pulled.

Claims

1. A gas filtering device, characterized in that: The filter cartridge (101) comprises a filter cartridge (101) and plugs (102) arranged on both sides of the filter cartridge (101); the interior of the filter cartridge (101) is blocked by the plugs (102) to form a filter cavity (103); a breathable outer shell (104), absorbent cotton (105) and a desiccant (106) are arranged in the filter cavity (103); the desiccant (106) is located between the breathable outer shell (104) and the absorbent cotton (105); and ventilation holes are provided on the end surface and the outer ring surface of the breathable outer shell (104); A boss (107) is provided on one side of the plug (102) close to the filter cartridge (101); an external stepped groove (108) is provided at the connection between the boss (107) and the plug (102); an external thread (109) is provided on the outer ring surface of the external stepped groove (108); an annular groove is provided on the outer ring surface of the boss (107); a sealing ring (110) is sleeved in the annular groove; and the sealing ring (110) is capable of contacting the inner ring surface of the filter cartridge (101); The filter cartridge (101) is provided with inner stepped grooves (111) on both sides thereof, which cooperate with the outer stepped grooves (108); the inner stepped grooves (111) are provided with inner threads (112) which can mesh with the outer threads (109); a sealing gasket (113) is installed in the inner stepped grooves (111); the sealing gasket (113) is arranged perpendicular to the inner threads (112).

2. A gas filtering device according to claim 1, characterized in that: One end of the plug (102) away from the filter cartridge (101) is connected to a joint pipe (114), and the joint pipe (114) is connected to a hose of the detection pipeline.

3. A gas filtering device according to claim 2, characterized in that: A threaded anti-slip ring (115) is provided on the outer ring surface of the end of the joint pipe (114), and the anti-slip ring (115) is triangular in shape.

4. A gas filtering device according to claim 1, characterized in that: The outer ring surface of the plug (102) is provided with anti-slip grooves, and the direction of the anti-slip grooves is the same as the axis.

5. A gas filtering device according to claim 1, characterized in that: A convex ring (116) is provided on one side of the outer stepped groove (108), the convex ring (116) cooperates with the sealing gasket (113) for sealing, and the convex ring (116) is arranged perpendicular to the external thread (109).

Images