CN212871910U

CN212871910U - Sampling device for exhaust-gas detection

Info

Publication number: CN212871910U
Application number: CN202021933885.8U
Authority: CN
Inventors: 崔佳磊; 彭海艳
Original assignee: Hebei Pulian Testing Technology Co ltd
Current assignee: Hebei Pulian Testing Technology Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-04-02
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses a sampling device for exhaust-gas detection, including main part and sample part, the main part includes casing and shutoff piece one, the intermediate position department of casing is provided with the sampler barrel and places the chamber, and the top that the chamber was placed to the sampler barrel is provided with the opening, the sampler barrel is placed the chamber both ends and is all provided with and separates the chamber, it places and is provided with through-hole two between the chamber to separate chamber and sampler barrel, it keeps away from the sampler barrel and places the lateral wall of chamber one side and seted up through-hole three to separate the chamber, the casing lateral wall in the three outsides of through-hole is provided with sampling tube and connecting pipe respectively. This practicality is when the sampler barrel needs to be changed, extracts the sampler barrel from the sampler barrel is inside, receives reset spring one at this moment and restores to deform with reset spring two, and closing plate one carries out automatic shutoff with the through-hole one of sampler barrel, prevents that waste gas from discharging to the external world, and closing plate two carries out automatic shutoff with through-hole two, prevents that waste gas from discharging to the external world, and convenient to use is worth promoting.

Description

Sampling device for exhaust-gas detection

Technical Field

The utility model relates to a sampling device technical field, specificly relate to a sampling device for exhaust-gas detection.

Background

Industrial modernization is a process that establishes industry on the basis of the latest scientific and technological technology in the world of the present day, and enables industrial production and production technology in the whole country to reach the advanced level in the world at that time. One of the important contents of the construction of the four nationalities in China. Industrial modernization is a historical concept. Its content is continuously updated with the progress of science and technology. In the history of human development, industrial modernization has roughly undergone three stages of modernization in the steam era, modernization in the electrical era and modernization in the atomic energy era, but although the industry accelerates the scientific and technological development of human beings to facilitate the lives of human beings, the industrial waste gas generated by the industry is more and is very harmful to the global environmental health, and the waste gas comprises: carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, lead mercury (mist) sulfate, beryllium compounds, smoke dust and productive dust, which are discharged into the atmosphere and pollute the air. The substances enter human bodies through different ways and respiratory tracts, some of the substances directly cause harm, some of the substances also have an accumulation effect and can seriously harm the health of people,

modern people have begun to attach importance to industrial waste gas's improvement, but waste gas is in handling, need take a sample to the waste gas in the waste gas container and take back the laboratory again and detect, but the sampling device volume is great among the prior art, and is inconvenient to carry, and sampling device troublesome poeration also can't take multiple waste gas.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

An object of the utility model is to provide a sampling device for exhaust-gas detection to solve the problem that proposes among the above-mentioned background art.

2. Technical scheme

In order to solve the above problem, the following technical scheme is adopted in the utility model:

a sampling device for waste gas detection comprises a main body part and a sampling part, wherein the main body part comprises a shell and a first blocking part, a sampling cylinder placing cavity is arranged at the middle position of the shell, an opening is formed in the top of the sampling cylinder placing cavity, two ends of the sampling cylinder placing cavity are provided with separating cavities, a through hole II is formed between the separating cavity and the sampling cylinder placing cavity, a through hole III is formed in the side wall of the separating cavity, which is far away from the side of the sampling cylinder placing cavity, the side wall of the shell, which is outside the through hole III, is provided with a sampling pipe and a connecting pipe respectively, the free end of the sampling pipe is provided with a suction head, the connecting pipe is provided with a check valve II, the free end of the connecting pipe is provided with a negative pressure air bag, one end of the negative pressure air bag is provided with an air outlet pipe, the plugging piece comprises a second guide post, a second sealing plate and a second reset spring, the second guide post penetrates through the space between the sampling tube placing cavity and the separation cavity below the second through hole, one end, close to the sampling tube placing cavity, of the second guide post is provided with a second inclined surface, one end, close to the separation cavity, of the second guide post is provided with the second sealing plate, the second sealing plate is located on one side of the second through hole, and the second reset spring is arranged between the second sealing plate and the side wall of the separation cavity;

the sampling part comprises a sampling cylinder and a first plugging piece, wherein through holes are formed in two ends of the sampling cylinder, baffles are arranged at two ends of the inside of the sampling cylinder, the first plugging piece comprises a first guide column, a first sealing plate and a first reset spring, a first guide column is arranged on the side wall of the sampling cylinder above the first through hole, an inclined plane is arranged at one end, away from the baffles, of the first guide column, a first sealing plate is arranged at one end, close to the baffles, of the first guide column, the first sealing plate is located on one side of the first through hole, and the first reset spring is arranged between the baffles and the first sealing plate.

Preferably, the sampling tube placing cavity is matched with the sampling tube.

Preferably, the second inclined surface is inclined upwards, and the first inclined surface is inclined downwards.

Preferably, the flow direction of the one-way valve II is from the separation cavity to the negative pressure air bag, and the flow direction of the one-way valve I is from the negative pressure air bag to the outside.

Preferably, the distance between the first through hole and the bottom surface of the sampling tube is equal to the distance between the second through hole and the bottom surface of the sampling tube placing cavity.

3. Advantageous effects

The utility model sets a guide post II between the sampling tube placing cavity below the through hole II and the separation cavity, one end of the guide post II close to the sampling tube placing cavity is provided with an inclined plane II, one end of the guide post II close to the separation cavity is provided with a sealing plate II, the sealing plate II is arranged at one side of the through hole II, a reset spring II is arranged between the sealing plate II and the side wall of the separation cavity, the side wall of the sampling tube above the through hole I is provided with a guide post I, one end of the guide post I far away from the baffle is provided with an inclined plane I, one end of the guide post I close to the baffle is provided with a sealing plate I, the sealing plate I is arranged at one side of the through hole I, a reset spring I is arranged between the baffle and the sealing plate I, when in application, in the process that the sampling tube is inserted into the sampling tube placing cavity of the shell, the bottom, then the sealing plate II compresses the return spring II to open the through hole II, the inclined surface I of the sampling tube guide post I is contacted with the top surface of the shell, the guide post moves towards the inside of the sampling tube along with the movement of the sampling tube, the sealing plate I compresses the return spring I to open the through hole I until the through hole I is aligned with the through hole II, the sampling tube completely moves to the inside of the sampling tube placing cavity, the suction head, the sampling tube and the negative pressure air bag are connected into a passage to connect the suction head with the exhaust gas container outlet pipe, the negative pressure air bag is repeatedly pressed, because the check valve flows to the separation cavity to the negative pressure air bag and the check valve flows to the outside to ensure that gas in the exhaust gas container enters the sampling tube, when the sampling tube needs to be replaced, the sampling tube is pulled out from the inside of the sampling tube, and then the return spring I and the return spring II recover deformation, the sealing plate I automatically plugs the through hole I of the sampling tube, prevent that waste gas from discharging to the external world, the automatic shutoff is carried out with through-hole two to closing plate two, prevents that waste gas from discharging to the external world, and convenient to use is worth promoting.

Drawings

FIG. 1 is a schematic view of a first state structure of the present invention;

FIG. 2 is a structural diagram of a second state of the present invention;

fig. 3 is a schematic view of the structure of the outlet pipe according to the present invention.

Reference numerals: 1-air outlet pipe, 2-negative pressure air bag, 3-connecting pipe, 4-separation cavity, 5-inclined plane I, 6-return spring I, 7-sampling tube, 8-baffle, 9-guide column I, 10-through hole I, 11-through hole II, 12-air suction head, 13-sampling tube, 14-through hole III, 15-guide column II, 16-inclined plane II, 17-sampling tube placing cavity, 18-shell, 19-sealing plate I, 20-sealing plate II, 21-return spring II, 22-one-way valve II and 23-one-way valve I.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples.

Examples

As shown in fig. 1-3, a sampling device for waste gas detection comprises a main body part and a sampling part, the main body part comprises a housing 18 and a first blocking part, a sampling cylinder placing cavity 17 is arranged at the middle position of the housing 18, an opening is arranged at the top of the sampling cylinder placing cavity 17, two ends of the sampling cylinder placing cavity 17 are both provided with a separation cavity 4, a through hole two 11 is arranged between the separation cavity 4 and the sampling cylinder placing cavity 17, a through hole three 14 is arranged on the side wall of the separation cavity 4 far away from the sampling cylinder placing cavity 17, a sampling tube 13 and a connecting tube 3 are respectively arranged on the side wall of the housing 18 outside the through hole three 14, a suction head 12 is arranged at the free end of the sampling tube 13, a check valve two 22 is arranged on the connecting tube 3, a negative pressure air bag 2 is arranged at the free end of the connecting tube 3, an air outlet tube 1 is arranged, the second check valve 22 flows to the separation cavity 4 to the negative pressure air bag 2, the first check valve 23 flows to the negative pressure air bag 2 to the outside, the activated carbon filter layer 101 is arranged in the air outlet pipe 1, the activated carbon filter layer 101 can filter and discharge part of discharged air, the blocking piece comprises a second guide column 15, a second sealing plate 20 and a second return spring 21, the second guide column 15 penetrates through the space between the sampling tube placing cavity 17 and the separation cavity 4 below the second through hole 11, one end, close to the sampling tube placing cavity 17, of the second guide column 15 is provided with a second inclined surface 16, one end, close to the separation cavity 4, of the second guide column 15 is provided with the second sealing plate 20, the second sealing plate 20 is located on one side of the second through hole 11, and the second return spring 21 is arranged between the second sealing plate 20 and the;

the sampling part comprises a sampling tube 7 and a second plugging piece, a sampling tube placing cavity 17 is matched with the sampling tube 7, two ends of the sampling tube 7 are provided with a first through hole 10, two ends inside the sampling tube 7 are provided with baffle plates 8, the second plugging piece comprises a first guide column 9, a first sealing plate 19 and a first return spring 6, the side wall of the sampling tube 7 above the first through hole 10 is provided with the first guide column 9, one end, far away from the baffle plate 8, of the first guide column 9 is provided with a first inclined plane 5, the second inclined plane 16 inclines upwards, the first inclined plane 5 inclines downwards, one end, close to the baffle plate 8, of the first guide column 9 is provided with a first sealing plate 19, the first sealing plate 19 is located on one side of the first through hole 10, the distance between the first through hole 10 and the bottom surface of the sampling tube 7 is equal to the distance between the second through hole 11 and the bottom surface of.

The working principle is as follows: when the sampling device is used, the air suction head 12 is connected with an air outlet pipe of a waste gas container, the sampling tube 7 is clamped into the sampling tube placing cavity 17, the bottom surface of the sampling tube 7 is in contact with the second inclined surface 16 of the second guide column 15 in the process that the sampling tube 7 is inserted into the sampling tube placing cavity 17 of the shell 18, the second guide column 15 moves towards the inside of the separation cavity 4 along with the movement of the sampling tube 7, the second sealing plate 20 compresses the second return spring 21, the second through hole 11 is opened, the first inclined surface 5 of the first guide column 9 of the sampling tube 7 is in contact with the top surface of the shell 18, the first guide column 9 moves towards the inside of the sampling tube 7 along with the movement of the sampling tube 7, the first return spring 6 is compressed by the first sealing plate 19, the first through hole 10 is opened until the first through hole 10 is aligned with the second through hole 11, the sampling tube 7 completely moves to the inside of the sampling tube placing cavity 18, and the air suction head, repeated pressing negative pressure gasbag 2, because two 22 flow directions of check valve are 4 to negative pressure gasbag 2 for separating the chamber, the flow direction of one-way valve 23 is negative pressure gasbag 2 to external world, make gas get into inside the sampler barrel 7 among the waste gas container, when needing to be changed the sampler barrel 7, extract the sampler barrel 7 from the inside of sampler barrel 7, at this moment receive reset spring 6 and reset spring two 21 to resume deformation, closing plate 19 carries out automatic shutoff with through-hole 10 of sampler barrel 7, prevent that waste gas from discharging to external world, closing plate two 20 carries out automatic shutoff with through-hole two 11, prevent to discharge to external world to waste gas, high durability and convenient use, and is worth promoting.

It will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the present invention, and that variations and modifications of the above described embodiments are within the scope of the appended claims of the present invention as long as they are within the true spirit and scope of the present invention.

Claims

1. A sampling device for waste gas detection is characterized by comprising a main body part and a sampling part, wherein the main body part comprises a shell (18) and a first sealing part, a sampling cylinder placing cavity (17) is arranged in the middle of the shell (18), an opening is formed in the top of the sampling cylinder placing cavity (17), two ends of the sampling cylinder placing cavity (17) are provided with separating cavities (4), a through hole II (11) is formed between the separating cavity (4) and the sampling cylinder placing cavity (17), a through hole III (14) is formed in the side wall of one side, away from the sampling cylinder placing cavity (17), of the separating cavity (4), the side wall of the shell (18) outside the through hole III (14) is provided with a sampling pipe (13) and a connecting pipe (3) respectively, a suction head (12) is arranged at the free end of the sampling pipe (13), and a one-way valve II (22) is arranged on the connecting pipe (3), a negative pressure air bag (2) is arranged at the free end of the connecting pipe (3), an air outlet pipe (1) is arranged at one end of the negative pressure air bag (2), a one-way valve I (23) is arranged on the air outlet pipe (1), an activated carbon filter layer (101) is arranged inside the air outlet pipe (1), the blocking piece comprises a second guide post (15), a second sealing plate (20) and a second return spring (21), a second guide post (15) penetrates through the space between the sampling tube placing cavity (17) below the second through hole (11) and the separation cavity (4), a second inclined plane (16) is arranged at one end of the second guide post (15) close to the sampling tube placing cavity (17), a second sealing plate (20) is arranged at one end of the second guide column (15) close to the separation cavity (4), a second sealing plate (20) is positioned at one side of the second through hole (11), and a second return spring (21) is arranged between the second sealing plate (20) and the side wall of the separation cavity (4);

the sampling part comprises a sampling cylinder (7) and a second plugging piece, through holes I (10) are formed in two ends of the sampling cylinder (7), baffles (8) are arranged at two ends of the inner part of the sampling cylinder (7), the second plugging piece comprises guide columns I (9), sealing plates I (19) and reset springs I (6), the side wall of the sampling cylinder (7) above the through holes I (10) is provided with guide columns I (9), one ends, far away from the baffles (8), of the guide columns I (9) are provided with inclined planes I (5), one ends, close to the baffles (8), of the guide columns I (9) are provided with sealing plates I (19), the sealing plates I (19) are located on one side of the through holes I (10), and the reset springs I (6) are arranged between the baffles (8) and the sealing plates I (19).

2. The sampling device for exhaust gas detection according to claim 1, wherein the sampling cylinder placing chamber (17) and the sampling cylinder (7) are matched with each other.

3. The sampling device for exhaust gas detection according to claim 1, wherein the second inclined surface (16) is inclined upward, and the first inclined surface (5) is inclined downward.

4. The sampling device for exhaust gas detection according to claim 1, wherein the second check valve (22) flows to the separation chamber (4) to the negative pressure air bag (2), and the first check valve (23) flows to the outside from the negative pressure air bag (2).

5. The sampling device for exhaust gas detection according to claim 1, wherein the distance between the first through hole (10) and the bottom surface of the sampling cylinder (7) is equal to the distance between the second through hole (11) and the bottom surface of the sampling cylinder placing cavity (17).