CN213209647U

CN213209647U - Gas sampling device for environment detection

Info

Publication number: CN213209647U
Application number: CN202022057446.1U
Authority: CN
Inventors: 代凤林; 李金辉; 杨延瑛
Original assignee: Qinghai Kim Yun Environmental Technology Ltd
Current assignee: Qinghai Kim Yun Environmental Technology Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-05-14
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a gaseous sampling technical field just discloses a gaseous sampling device for environmental test, which comprises a housin, the left side of casing is equipped with the switch, the inside left side of casing is equipped with the propulsion cylinder, the right side fixedly connected with pushing ram of propulsion cylinder, the right side fixedly connected with piston of pushing ram, the right side of piston is equipped with the inner chamber, the right side of inner chamber is equipped with the intercommunication valve, the bottom of inner chamber is equipped with the sample test tube, the top both sides of sample test tube are equipped with the closing valve, the top of inner chamber is equipped with the dustcoat, the inside fixed mounting of dustcoat has the revolving cylinder. The utility model discloses the structure is through increasing sealed test tube and sealed piston, replaces to use the sampling bag to collect air sample in the original structure, avoids appearing the sampling bag fragile and the relatively poor problem of gas tightness, has improved the device and has placed the storage of air sample, has avoided appearing the condition appearance that the sample revealed in the sampling process.

Description

Gas sampling device for environment detection

Technical Field

The utility model relates to a gaseous sampling technical field specifically is a gaseous sampling device is used in environmental detection.

Background

Daily air quality is closely related to the living standard of people, and the detection to the air seems crucial, through the collection to people's living air, and then carries out the analysis to the air sample, judges whether can cause the influence to people's daily life.

However, most of the existing collection devices for air adopt gas sampling bags, the gas sampling bags are prone to sample rupture in the air collection process, the gas sampling bags are poor in sealing performance and prone to sample leakage, when technicians collect air, the demands on manpower resources are large, collected samples are single and accidental, and when the technicians manually extract the samples, the samples are prone to leakage, and therefore the gas sampling devices for environment detection are provided.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a gas sampling device for environmental detection possesses the advantage of high leakproofness, has solved the problem that the sampling bag was revealed at gas collection in-process sample, possesses the advantage that carries out the sample seal automatically, and self expired gas produced the problem of polluting the sample when having solved the manual sealed sample of technical staff.

The utility model provides a following technical scheme: a gas sampling device for environmental detection comprises a shell, wherein a switch is arranged on the left side of the shell, a fixed layer is arranged on the left side inside the shell, a propulsion cylinder is fixedly connected to the right side of the fixed layer, a propulsion rod is fixedly connected to the right side of the propulsion cylinder, a piston is fixedly connected to the right side of the propulsion rod, an inner cavity is arranged on the right side of the piston, a communicating valve is arranged on the right side of the inner cavity, a sample test tube is arranged at the bottom of the inner cavity, a closing valve is arranged on each of two sides of the top of the sample test tube, an outer cover is arranged on the top of the inner cavity, a rotary cylinder is fixedly arranged inside the outer cover, a connecting rod is fixedly connected to the bottom of the rotary cylinder, pressure rods are fixedly arranged on two sides of the connecting rod, a limiting block is arranged at the bottom of each pressure, and a sealing ring is arranged on the outer wall of the closed layer.

Preferably, the surface of the outer cover is provided with heat dissipation holes, the heat dissipation holes are uniformly arranged on the surface of the top of the outer cover, and the internal intervals of the heat dissipation holes at the top of the outer cover are the same.

Preferably, a sealing cushion is arranged at the joint of the closing valve, and the sealing cushion has elasticity.

Preferably, the surface of the sample test tube is provided with a frosted layer.

Preferably, the inner walls of the sealing layer and the sealing plug are provided with spiral threads which are in a sunken state, the bottom area of the sealing layer is smaller than the top area, the bottom of the sealing plug is provided with an opening, and the top area of the bottom opening of the sealing plug is smaller than the bottom area.

Preferably, the bottom surface of the connecting rod is provided with spiral threads, and the spiral threads are in a convex state.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this gas sampling device is used in environmental detection through increasing sealed test tube and sealed piston, replaces to use the sampling bag to collect air sample in the original structure, avoids appearing the sampling bag fragile and the relatively poor problem of gas tightness, has improved the device and has placed the storage of air sample, has avoided appearing the condition appearance that the sample revealed in the sampling process.

2. This gas sampling device is used in environmental detection through increasing sealed test tube and revolving cylinder, makes the cylinder promote sealed piston and seals the collection to the sample, and through the synchronous work of a plurality of sealed test tubes, has improved the commonality of sample, avoids appearing the condition of contingency and unicity, has reduced technical staff's work load, and has prevented that technical staff self factor from to the interference of sample when sealed, has ensured the experimental sample accuracy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the sealing plug of the present invention;

fig. 3 is a schematic view of the structure of the sealing layer of the present invention.

In the figure: 1. a housing; 2. a switch; 3. a fixed layer; 4. propelling the cylinder; 5. a piston; 6. a housing; 7. a rotating cylinder; 8. a sealing plug; 9. a communication valve; 10. an inner cavity; 11. closing the valve; 12. a sample tube; 13. a push rod; 14. a limiting block; 15. a seal ring; 16. a sealing layer; 17. a connecting rod; 18. a pressure bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a gas sampling device for environmental testing comprises a housing 1, a switch 2 is disposed on the left side of the housing 1, a fixed layer 3 is disposed on the left side of the inside of the housing 1, a propulsion cylinder 4 is fixedly connected to the right side of the fixed layer 3, a propulsion rod 13 is fixedly connected to the right side of the propulsion cylinder 4, a piston 5 is fixedly connected to the right side of the propulsion rod 13, an inner cavity 10 is disposed on the right side of the piston 5, a communication valve 9 is disposed on the right side of the inner cavity 10, a sample tube 12 is disposed at the bottom of the inner cavity 10, a frosted layer is disposed on the surface of the sample tube 12, the frosted layer is added on the surface of the sample tube 12, the friction force of a technician when the sample tube 12 contacts is effectively improved by increasing the roughness of the contact surface, the condition that the sample tube 12 falls and is broken due to the slipping of a hand is avoided, and, the original sampling bag is a plastic product, the use times are limited, the degradation speed of the plastic is slow, the environment is easily polluted, the two sides of the top of the sample test tube 12 are provided with the closed valves 11, the joints of the closed valves 11 are provided with the sealing cushions, the sealing cushions have elasticity, the sealing cushions are additionally arranged on the two sides of the closed valves 11, the situation that gas leaks from the contact gaps between the closed valves 11 and the sample test tube 12 when the air sample is sampled is effectively avoided, the internal air tightness of the device is ensured, the normal collection of the air sample by the device is ensured, the sealing cushions have elasticity, the rigid damage to the sample test tube 12 when the closed valve 11 is prevented while the air tightness of the device is ensured, the top of the inner cavity 10 is provided with the outer cover 6, the surface heat dissipation holes of the outer cover 6 are provided with heat dissipation holes which are uniformly arranged on the top surface of the outer cover 6, and, by additionally arranging the heat dissipation holes on the surface of the top of the outer cover 6, the phenomenon that when the rotary cylinder 7 works, huge heat is generated inside and cannot be led out, so that the situation that the internal heat is accumulated to cause overhigh temperature inside the working environment of the rotary cylinder 7 occurs, the influence of high temperature on the rotary cylinder 7 is effectively avoided, the service life of the rotary cylinder 7 is prolonged, the maintenance cost in the later device operation process is reduced, the rotary cylinder 7 is fixedly arranged inside the outer cover 6, the bottom of the rotary cylinder 7 is fixedly connected with a connecting rod 17, the bottom surface of the connecting rod 17 is provided with spiral grains which are in a protruding state, the spiral grains are additionally arranged at the bottom of the connecting rod 17, the purpose of stable connection with the sealing plug 8 and the bottom sealing layer 16 through the spiral grains is achieved during working, the normal operation of the device is ensured by additionally arranging the spiral grains, the connecting rod 17 is fixedly connected, the rotary air cylinder 7 drives the sealing layer 16 to move towards the bottom when working, so that the sealing layer 16 and a test tube opening at the top of the sample test tube 12 form a closed structure, pressure rods 18 are fixedly installed at two sides of a connecting rod 17, a limiting block 14 is arranged at the bottom of each pressure rod 18, a sealing plug 8 is fixedly connected to the bottom of each limiting block 14, a sealing layer 16 is arranged at the bottom of each sealing plug 8, a sealing ring 15 is arranged on the outer wall of each sealing layer 16, spiral threads are arranged on the inner walls of the sealing layers 16 and the inner walls of the sealing plugs 8 and are in a concave state, the bottom area of each sealing layer 16 is smaller than the top area, an opening is formed at the bottom of each sealing plug 8, the top area of the opening at the bottom of each sealing plug 8 is smaller than the bottom area, the opening at the bottom of each sealing plug 8 is deeper, a volume space larger than the, the fixed connection is completed with the sealing layer 16 through the bottom opening structure, and the outside of the sample test tube 12 outside the sealing plug 8 forms a closed structure.

The working principle is that when air gas sampling is carried out, the switch 2 is opened, the air cylinder 4 is pushed to start working, the piston 5 is pushed to the left side of the communicating valve 9 from the right side in the inner cavity 10, the piston 5 moves to the left side and stops moving to the starting position, the switch 2 is kept opened, the piston 5 repeats the working, the circulation operation is carried out for four to five times, the air in the device is exhausted, the influence on the air sample collection is avoided, the circulation is finished, when the piston 5 reaches the left side starting position, the switch 2 is closed, the communicating valve 9 is closed, the top rotary air cylinder 7 works, the connecting rod 17 drives the sealing layer 16 and the sealing plug 8 to move downwards, the sealing layer 16 and the sample test tube 12 form a sealing structure, the connecting rod 17 rotates to be separated from a spiral meshing structure with the bottom sealing layer 16, the connecting rod 17 moves upwards, at the moment, the connecting rod 17 is still connected, the sealing plug 8 is occluded with the outer wall of the sample test tube 12 to form a stable closed space, the closing valve 11 is opened, and the sample test tube 12 is taken down.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gas sampling device for environmental monitoring, includes casing (1), its characterized in that: the device is characterized in that a switch (2) is arranged on the left side of the shell (1), a fixed layer (3) is arranged on the left side of the interior of the shell (1), a propulsion cylinder (4) is fixedly connected to the right side of the fixed layer (3), a propulsion rod (13) is fixedly connected to the right side of the propulsion cylinder (4), a piston (5) is fixedly connected to the right side of the propulsion rod (13), an inner cavity (10) is arranged on the right side of the piston (5), a communication valve (9) is arranged on the right side of the inner cavity (10), a sample test tube (12) is arranged at the bottom of the inner cavity (10), closing valves (11) are arranged on two sides of the top of the sample test tube (12), an outer cover (6) is arranged on the top of the inner cavity (10), a rotary cylinder (7) is fixedly installed in the outer cover (6), a connecting rod (17) is fixedly connected to the bottom of the rotary cylinder (7), and pressure, the bottom of pressure pole (18) is equipped with stopper (14), the bottom fixedly connected with sealing plug (8) of stopper (14), the bottom of sealing plug (8) is equipped with airtight layer (16), the outer wall of airtight layer (16) is equipped with sealing washer (15).

2. The gas sampling device for environmental monitoring according to claim 1, wherein: the surface of the outer cover (6) is provided with heat dissipation holes, the heat dissipation holes are evenly distributed on the surface of the top of the outer cover (6), and the internal intervals of the heat dissipation holes in the top of the outer cover (6) are the same.

3. The gas sampling device for environmental monitoring according to claim 1, wherein: and a sealing cushion is arranged at the interface of the closing valve (11) and has elasticity.

4. The gas sampling device for environmental monitoring according to claim 1, wherein: and a frosting layer is arranged on the surface of the sample test tube (12).

5. The gas sampling device for environmental monitoring according to claim 1, wherein: the sealing structure is characterized in that spiral threads are arranged on the inner walls of the sealing layer (16) and the sealing plug (8), the spiral threads are in a sunken state, the area of the bottom of the sealing layer (16) is smaller than that of the top, an opening is formed in the bottom of the sealing plug (8), and the area of the top of the opening in the bottom of the sealing plug (8) is smaller than that of the bottom.

6. The gas sampling device for environmental monitoring according to claim 1, wherein: the bottom surface of the connecting rod (17) is provided with spiral threads, and the spiral threads are in a convex state.