Leak-proof chemical gas sampling equipment

Abstract

The utility model discloses leakproof chemical gas sampling equipment which comprises a gas suction pipe and a gas collection bottle, one end of the gas suction pipe is provided with a gas suction pump, the bottom of the gas suction pipe is provided with at least one electromagnetic valve, one end of the electromagnetic valve is fixedly provided with a connecting pipe through a bolt, and the circumferential inner wall of the connecting pipe is welded with a fixing plate; the bottom of the fixing plate is fixedly provided with a threaded column through a bolt, the outer side of the circumference of the threaded column is provided with at least one gas passing groove, and the threaded column is in threaded connection with the gas collecting bottle. The gas passing hole, the fixing ring and the baffle ring are arranged, the gas collecting bottle moves downwards, and the fixing ring and the baffle ring move downwards, so that the baffle ring blocks the gas passing hole; according to the device, the air passing hole is blocked, then chemical gas in the connecting pipe is prevented from being exhausted into air, the environmental protection property of the device is improved, the sealing effect of the device can be improved through the arrangement of the insertion block, and the stability of the device can be improved through the arrangement of the tension spring.

Description

Technical Field

[0001] The utility model relates to the technical field of gas collection, in particular to a leakage-proof chemical gas sampling device. Background Art

[0002] The development of chemical industry pays more and more attention to the treatment and collection of chemical gases, so that the chemical gases are collected and treated to meet the emission standards before being discharged, avoiding the direct discharge of chemical gases to cause a greater impact on the environment.

[0003] After searching, the publication number CN219038539U discloses a sampling device for chemical engineering detection, which can meet the sampling operations of chemical gases at different heights, in multiple directions and at multiple points. It has high overall performance, strong practicality, convenient operation, and many functions. Usually, there is a connecting pipe between the solenoid valve and the gas collecting bottle for installing the gas collecting bottle. After the gas collection is completed, the gas collecting bottle is removed from the connecting pipe, and the chemical gas in the connecting pipe will flow into the air, thereby polluting the air. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a leakage-proof chemical gas sampling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A leak-proof chemical gas sampling device comprises an air intake pipe and a gas collecting bottle, wherein an air suction pump is arranged at one end of the air intake pipe, and at least one solenoid valve is arranged at the bottom of the air intake pipe, a connecting pipe is fixed to one end of the solenoid valve by bolts, a fixing plate is welded to the circumferential inner wall of the connecting pipe, a threaded column is fixed to the bottom of the fixing plate by bolts, at least one air passing groove is provided on the circumferential outer side of the threaded column, the threaded column is threadedly connected to the gas collecting bottle, a plurality of air passing holes and sliding holes are provided at the bottom of the fixing plate, a plurality of sliding holes are slidably connected with sliding columns, a plurality of sliding columns are fixed to fixing rings at one end by bolts, a plurality of avoidance grooves are provided on the top of the fixing ring, and a plurality of sliding columns are fixed to retaining rings at the other end by bolts.

[0007] As a further solution of the utility model, a plurality of plug-in blocks matching the air holes are fixed to the bottom of the retaining ring by bolts, and the inner sides of the plug-in blocks are arc surfaces.

[0008] As a further solution of the utility model, a connecting plate is welded to the circumferential inner wall of the retaining ring, a tension spring is welded to the bottom of the connecting plate, and the tension spring is fixed to the fixing plate.

[0009] As a further solution of the utility model, a plurality of the sliding holes are each provided with an installation groove, a sealing ring is bonded in the installation groove, and the sealing ring is sleeved on the outer circumference of the sliding column.

[0010] As a further solution of the utility model, a plurality of mounting holes are provided at the bottom of the fixing ring, and balls roll in the mounting holes.

[0011] As a further solution of the utility model, one end of the threaded column is fixed with a hemispherical head by a bolt.

[0012] As a further solution of the utility model, a connecting frame is fixed to the circumferential outer wall of the intake pipe by bolts, and a filter screen is provided at the air inlet end of the intake pipe.

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

[0014] 1. Through the setting of the air hole, the fixed ring and the baffle ring, the gas collecting bottle moves downward, and the fixed ring and the baffle ring move downward, so that the baffle ring blocks the air hole and seals the air hole, thereby preventing the chemical gas inside the connecting pipe from being discharged into the air, thereby improving the environmental protection of the device.

[0015] 2. Through the setting of the plug, the retaining ring moves downward, driving the plug to move downward, and performing secondary blocking on the air hole, thereby reducing the possibility of chemical gas flowing through the air hole and improving the sealing effect of the device.

[0016] 3. Through the setting of the tension spring, the retaining ring moves upward to stretch and deform the tension spring, generating tension. When the retaining ring loses its upward supporting force, the tension spring resets and pulls the retaining ring back to its original position, thereby limiting the position of the retaining ring and avoiding a gap between the retaining ring and the air hole, which may lead to leakage of chemical gas and improve the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a leak-proof chemical gas sampling device proposed by the utility model;

[0018] Figure 2 This is a partial cross-sectional structural schematic diagram of a leak-proof chemical gas sampling device proposed by the utility model;

[0019] Figure 3 This is a partial enlarged structural schematic diagram of a leak-proof chemical gas sampling device proposed by the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the partial decomposition structure of a leakage-proof chemical gas sampling device.

[0021] In the figure: 1. vacuum pump; 2. suction pipe; 3. connecting frame; 4. filter screen; 5. solenoid valve; 6. connecting pipe; 7. gas collecting bottle; 8. fixing plate; 9. retaining ring; 10. sealing ring; 11. sliding column; 12. ball bearing; 14. air groove; 15. threaded column; 16. fixing ring; 17. sliding hole; 18. hemispherical head; 19. avoidance groove; 20. plug block; 21. air hole; 22. tension spring; 23. connecting plate. DETAILED DESCRIPTION

[0022] 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. 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 4 A leak-proof chemical gas sampling device comprises an air suction pipe 2 and a gas collecting bottle 7. An air pump 1 is arranged at one end of the air suction pipe 2. At least one solenoid valve 5 is arranged at the bottom of the air suction pipe 2. A connecting pipe 6 is fixed to one end of the solenoid valve 5 by bolts. A fixing plate 8 is welded to the inner wall of the circumference of the connecting pipe 6. A threaded column 15 is fixed to the bottom of the fixing plate 8 by bolts. At least one gas passing groove 14 is arranged on the outer side of the circumference of the threaded column 15. The threaded column 15 is threadedly connected to the gas collecting bottle 7. A plurality of gas passing grooves 14 are arranged at the bottom of the fixing plate 8. Hole 21 and sliding hole 17, multiple sliding holes 17 are slidably connected with sliding columns 11, one end of multiple sliding columns 11 are fixed with fixing rings 16 by bolts, the top of the fixing ring 16 is provided with multiple avoidance grooves 19, the other end of multiple sliding columns 11 are fixed with retaining rings 9 by bolts, the gas collecting bottle 7 moves downward, the fixing ring 16 and the retaining ring 9 move downward, so that the retaining ring 9 blocks the air hole 21, the air hole 21 is blocked, thereby preventing the chemical gas inside the connecting pipe 6 from being discharged into the air, thereby improving the environmental protection of the device.

[0024] In the present invention, a plurality of plug-in blocks 20 matching the air holes 21 are fixed at the bottom of the retaining ring 9 by bolts, and the inner side of the plug-in block 20 is an arc surface. The retaining ring 9 moves downward, driving the plug-in block 20 to move downward, and the air holes 21 are blocked for a second time, reducing the possibility of chemical gas flowing through the air holes 21, thereby improving the sealing effect of the device. A connecting plate 23 is welded to the circumferential inner wall of the retaining ring 9, and a tension spring 22 is welded to the bottom of the connecting plate 23, and the tension spring 22 is fixed to the fixed plate 8. The retaining ring 9 moves upward to stretch and deform the tension spring 22, thereby generating tension. When the retaining ring 9 loses its upward supporting force, the tension spring 22 resets and pulls the retaining ring 9 to reset, thereby limiting the position of the retaining ring 9, thereby avoiding a gap between the retaining ring 9 and the air holes 21, thereby causing chemical gas leakage, thereby improving the stability of the device. A plurality of sliding holes 17 are provided with mounting grooves, and adhesives are glued into the mounting grooves. A sealing ring 10 is connected, and the sealing ring 10 is sleeved on the outer side of the circumference of the sliding column 11 to prevent chemical gas from flowing through the sliding hole 17, further improving the sealing effect of the device, and at the same time consuming the elastic force of the tension spring 22 to prevent the tension spring 22 from reciprocating and expanding for a long time. A plurality of mounting holes are provided at the bottom of the fixing ring 16, and balls 12 roll in the mounting holes. The balls 12 contact with the gas collecting bottle 7 to reduce the friction between the gas collecting bottle 7 and the fixing ring 16, so that the service life of the fixing ring 16 is longer. A hemispherical head 18 is fixed to one end of the threaded column 15 by bolts to guide the gas collecting bottle 7 to facilitate the connection between the gas collecting bottle 7 and the threaded column 15. A connecting frame 3 is fixed to the circumferential outer wall of the intake pipe 2 by bolts. A filter screen 4 is provided at the air inlet end of the intake pipe 2 to filter the incoming chemical gas to prevent impurities or garbage from entering the intake pipe 2.

[0025] Working principle: When in use, insert the gas collecting bottle 7 into the connecting pipe 6, rotate the gas collecting bottle 7, and install the gas collecting bottle 7 on the threaded column 15. During the installation process, the gas collecting bottle 7 will contact the ball 12 at the bottom of the fixing ring 16. Continue to rotate the gas collecting bottle 7, and the gas collecting bottle 7 will push the fixing ring 16 to move upward, so that the sliding column 11 and the retaining ring 9 and the plug 20 move upward, so that the plug 20 and the air hole 21 are disconnected, so that the gas can enter the air hole 21 from the inclined surface of the plug 20, and pass through the avoidance groove 19 and the air groove 14 into the gas collecting bottle 7. After the gas collection is completed, rotate the gas collecting bottle 7 in the opposite direction to move the gas collecting bottle 7 downward, so that the plug 20 is inserted into the air hole 21, and the air hole 21 is blocked, thereby preventing the chemical gas inside the connecting pipe 6 from being discharged into the air, thereby improving the environmental protection of the device.

[0026] Finally, it should be noted that: for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this utility model shall be included in the protection scope of this utility model.

Claims

1. A leak-proof chemical gas sampling device, comprising an air suction pipe (2) and a gas collecting bottle (7), wherein an air pump (1) is provided at one end of the air suction pipe (2), at least one solenoid valve (5) is provided at the bottom of the air suction pipe (2), and one end of the solenoid valve (5) is fixedly connected to a connecting pipe (6), characterized in that: The circumferential inner wall of the connecting tube (6) is fixedly connected to a fixing plate (8), the bottom of the fixing plate (8) is fixedly connected to a threaded column (15), the circumferential outer side of the threaded column (15) is provided with at least one air passage groove (14), the threaded column (15) is threadedly connected to the gas collecting bottle (7), the bottom of the fixing plate (8) is provided with a plurality of air passage holes (21) and sliding holes (17), the plurality of sliding holes (17) are slidably connected to sliding columns (11), one end of the plurality of sliding columns (11) is fixedly connected to a fixing ring (16), the top of the fixing ring (16) is provided with a plurality of avoidance grooves (19), and the other end of the plurality of sliding columns (11) is fixedly connected to a retaining ring (9).

2. The leak-proof chemical gas sampling equipment according to claim 1, characterized in that: A plurality of insert blocks (20) matching the air holes (21) are fixedly connected to the bottom of the retaining ring (9), and the inner sides of the insert blocks (20) are arc surfaces.

3. The leak-proof chemical gas sampling equipment according to claim 2, characterized in that: A connecting plate (23) is fixedly connected to the circumferential inner wall of the retaining ring (9), a tension spring (22) is fixedly connected to the bottom of the connecting plate (23), and the tension spring (22) is fixed to the fixing plate (8).

4. The leak-proof chemical gas sampling equipment according to claim 1, characterized in that: A plurality of the sliding holes (17) are each provided with an installation groove, a sealing ring (10) is fixedly connected in the installation groove, and the sealing ring (10) is sleeved on the outer circumference of the sliding column (11).

5. The leak-proof chemical gas sampling equipment according to claim 1, characterized in that: The bottom of the fixing ring (16) is provided with a plurality of mounting holes, and balls (12) roll in the mounting holes.

6. The leak-proof chemical gas sampling equipment according to claim 1, characterized in that: One end of the threaded column (15) is fixedly connected with a hemispherical head (18).

7. The leak-proof chemical gas sampling equipment according to claim 1, characterized in that: A connecting frame (3) is fixedly connected to the circumferential outer wall of the air intake pipe (2), and a filter screen (4) is provided at the air inlet end of the air intake pipe (2).

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