CN219573610U

CN219573610U - Quick sampling device of exhaust gas detection

Info

Publication number: CN219573610U
Application number: CN202320129073.5U
Authority: CN
Inventors: 臧小俊; 范娇龙; 贺书敏
Original assignee: Hubei Huajun Testing Co ltd
Current assignee: Hubei Huajun Testing Co ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-08-22
Anticipated expiration: 2033-01-13

Abstract

The utility model relates to the technical field of waste gas sampling and provides a rapid sampling device for waste gas detection, which comprises a sampling tube, a sampling nozzle arranged at the bottom of the sampling tube and a piston arranged at the inner side of the sampling tube in a sliding manner, wherein a self-shrinkage type blocking piece is arranged at the inner side of the bottom of the sampling nozzle; according to the utility model, the piston can be driven to move upwards through the air duct, the light plug body opens the air passage of the built-in pipe, so that waste gas can enter the collecting cavity through the built-in pipe in the nozzle and the first air inlet hole at the bottom of the sampling tube, after collection is finished, the light plug body can be automatically attached to the conical bayonet under the action of the elasticity of the spring, so that the built-in pipe is plugged, the pipeline of the built-in pipe is sealed, waste gas leakage is avoided, the collecting cavity always belongs to a sealed environment in the collection process, the waste gas leakage can be avoided, the collecting cavity is sealed and insulated, the stability of the collection amount of the waste gas is ensured, and the problems that the waste gas in the related art leaks and the temperature in the sampling bin is difficult to ensure are solved.

Description

Quick sampling device of exhaust gas detection

Technical Field

The utility model relates to the technical field of waste gas sampling, in particular to a rapid sampling device for waste gas detection.

Background

Industrial waste gas refers to the general term for various pollutant-containing gases discharged into the air during the fuel combustion and production processes in the factory of enterprises, and the waste gas comprises: carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxide, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid (mist) lead mercury, beryllium compounds, smoke dust and productive dust are discharged into the atmosphere to pollute the air, and the substances enter the human body through different paths of respiratory tracts, and some substances directly generate harm, and some substances have accumulation effect and can seriously harm the health of the human body. Therefore, whether the waste gas reaches the standard or not needs to be detected through sampling and inspection.

The application number 202220306314.4 discloses an industrial waste gas detects uses waste gas sampling device, including removable sampling tube, the second annular has been seted up to the lower extreme of protection type urceolus, and the second go-between embedding second annular has been seted up to the interior bottom of protection type urceolus, and the inside of protection type urceolus is equipped with protection type inner tube, and the inner chamber of protection type inner tube is industrial waste gas's sample storage storehouse, and the lower extreme of protection type inner tube is equipped with first go-between, first go-between embedding first annular. This waste gas sampling device for industrial waste gas detects, rotatory protection type inner tube realizes the separation between protection type inner tube and the protection type urceolus, can clean protection type inner tube, and rotatory removable sampling tube can take off removable sampling tube and carry out cleaning treatment to it, and the person of facilitating the use adopts insulation material, can carry out heat preservation to industrial waste gas in the sample storage storehouse of industrial waste gas.

However, the above sampling device has been found in the related art to have the following problems: above-mentioned sampling device is through the piston with waste gas extraction to in the sample storehouse, and in the sampling tube bottom mouth is in open state all the time after the extraction for waste gas has the risk of leaking, is difficult to keep the stability of waste gas collection volume, in addition is difficult to guarantee that the temperature is invariable in the sample storehouse, makes waste gas probably change after losing the temperature, influences the authenticity to waste gas detection.

Disclosure of Invention

The utility model provides a rapid sampling device for waste gas detection, which solves the problems that waste gas in the related art leaks and the temperature in a sampling bin is difficult to ensure to be constant.

The technical scheme of the utility model is as follows: the utility model provides a quick sampling device of exhaust gas detection, includes the sampling tube, installs the sampling tube mouth in the sampling tube bottom, slides the piston of setting in the sampling tube is inboard, the bottom inboard of sampling tube mouth is provided with from the shrink type shutoff piece, from shrink type shutoff piece includes built-in pipe, fixed disk, light cock body and elastic component, the top surface at the fixed disk is fixed to the built-in pipe, the fixed disk is fixed on the inner wall of sampling tube mouth, the light cock body sets up in the top of built-in pipe and through elastic component and built-in pipe elastic connection, the inner chamber of sampling tube forms the collecting chamber in the below region of piston, the inner chamber of sampling tube forms the balanced air chamber in the top region of piston, the first inlet port that makes sampling tube mouth and collecting chamber communicate with each other is seted up to the bottom surface of sampling tube, the central point of piston puts and has seted up the air vent with the communicating with the collecting chamber, the top of piston is fixed with the air vent with the communicating air vent, the top screw thread connection of sampling tube has the top cap with the balancing air chamber, set up with the communicating second inlet port on the top cap.

Preferably, the elastic piece comprises a spring, a first convex ring is fixedly connected to the outer wall of the light plug body, a second convex ring is fixedly connected to the outer wall of the built-in pipe, and the upper end and the lower end of the spring are respectively fixedly connected with the first convex ring and the second convex ring.

Preferably, the light plug body is in an inverted bucket-shaped structure.

Preferably, the inner side of the top of the built-in pipe is provided with a conical bayonet matched with the light plug body.

Preferably, a one-way air valve is arranged in the air guide hole, and the one-way air valve can only enable air in the collecting cavity to enter the air guide pipe.

Preferably, a bidirectional air valve is arranged in the second air inlet, when the internal air pressure of the balance air cavity is increased, the bidirectional air valve can enable the air in the balance air cavity to be discharged outwards from the second air inlet, and when the internal air pressure of the balance air cavity is reduced, the bidirectional air valve can enable the external air to enter the balance air cavity from the second air inlet.

Preferably, the top of the air duct penetrates through the top cover and extends out of the sampling tube.

Preferably, the air duct is located on the outer wall of the section of the sampling tube outside and is symmetrically fixed with two handles.

Preferably, the section of thick bamboo wall of sampling tube is bilayer structure, and is provided with annular closed heat preservation material layer in the section of thick bamboo wall intermediate layer of sampling tube.

Preferably, the piston is fixedly embedded with a sealing ring on the contact surface of the inner cavity wall of the sampling tube.

The working principle and the beneficial effects of the utility model are as follows:

1. according to the utility model, the piston can be driven to move upwards through the air duct, the light plug body opens the air passage of the built-in pipe, so that waste gas can enter the collecting cavity through the built-in pipe in the nozzle and the first air inlet hole at the bottom of the sampling tube, after collection is finished, the light plug body can be automatically attached to the conical bayonet under the action of the elasticity of the spring, so that the built-in pipe is plugged, the built-in pipe is sealed, waste gas leakage is avoided, the collecting cavity always belongs to a sealed environment in the collection process, the waste gas leakage can be avoided, the collecting cavity is sealed and insulated, the stability of the collection amount of the waste gas is ensured, and the problems that the waste gas in the related art leaks and the temperature in the sampling bin is difficult to ensure are solved;

2. according to the utility model, after the waste gas is collected, the air duct is communicated with the input pipeline of the waste gas detection device, then the air duct is pressed downwards through the handle, the piston is pushed to move downwards by the air duct, the air pressure in the collecting cavity is increased by the descending of the piston, the one-way air valve is opened under the action of the air pressure, the air in the collecting cavity and the collected waste gas can enter the air duct through the air duct, the waste gas is guided into the waste gas detection device through the air duct for detection, the operation is simple and convenient, and the rapid sampling and delivering of the waste gas can be realized.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of a rapid sampling device for detecting exhaust gas according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a rapid sampling device for detecting exhaust gas according to the present utility model;

FIG. 3 is a schematic cross-sectional elevation view of a rapid sampling device for detecting exhaust gas according to the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

in the figure: 1. a sampling tube; 11. a layer of thermal insulation material; 12. a first air inlet hole; 2. a sampling nozzle; 3. a top cover; 31. a second air inlet hole; 32. a two-way air valve; 4. an air duct; 5. a handle; 6. a piston; 61. an air guide hole; 7. a one-way air valve; 8. a self-retracting closure; 81. a built-in tube; 82. a fixed plate; 83. a lightweight plug body; 84. a first collar; 85. a second convex ring; 86. a spring; 87. a conical bayonet.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, the present utility model provides a technical solution: the utility model provides a quick sampling device of exhaust gas detection, including sampling tube 1, install the sampling tube 2 in sampling tube 1 bottom, slide the piston 6 that sets up in sampling tube 1 inboard, the bottom inboard of sampling tube 2 is provided with from shrink formula shutoff piece 8, as shown in fig. 4, from shrink formula shutoff piece 8 includes the built-in pipe 81, the fixed disk 82, light cock body 83 and elastic component, the top surface at the fixed disk 82 is fixed to built-in pipe 81, the fixed disk 82 is fixed on sampling tube 2's inner wall, light cock body 83 sets up in the top of built-in pipe 81 and through elastic component and built-in pipe 81 elastic connection, the elastic component includes spring 86, fixedly connected with first bulge loop 84 on the outer wall of light cock body 83, fixedly connected with second bulge loop 85 on the outer wall of built-in pipe 81, the upper and lower both ends of spring 86 are respectively with first bulge loop 84 and second bulge loop 85 fixed connection, light cock body 83 is the bucket form structure of inversion, light cock body 83 can adopt light material, and the surface of light cock body 83 is smooth in order to guarantee the gas tightness, the inside is equipped with the light cock body 83 and is equipped with the light cock body's the inside and is equipped with the light cock body 83 and is put into the conical inside 81 under the effect of the inner tube 81, the inner cone-shaped state of the inner tube is equipped with the spring 81, the top is broken down in the inner cone-shaped state of the inner tube is made 81.

Referring to fig. 3, a collecting cavity is formed in the lower area of a piston 6 in the inner cavity of a sampling tube 1 for collecting industrial waste gas to be detected, a balance air cavity is formed in the upper area of the piston 6 in the inner cavity of the sampling tube 1, a first air inlet hole 12 for enabling a sampling nozzle 2 to be communicated with the collecting cavity is formed in the bottom surface of the sampling tube 1, an air guide hole 61 communicated with the collecting cavity is formed in the center position of the piston 6, an air guide pipe 4 communicated with the air guide hole 61 is fixed at the top of the piston 6, the air guide pipe 4 can be communicated with an input pipeline of an exhaust gas detection device, a one-way air valve 7 is arranged in the air guide hole 61, the one-way air valve 7 can only enable air in the collecting cavity to enter the air guide pipe 4, when the piston 6 is arranged downwards, the air in the collecting cavity can be compressed by the piston 6, the air pressure in the collecting cavity is increased, in the process, the one-way air valve 7 is opened under the action of the air pressure, air in the collecting cavity and collected waste gas enter the air guide pipe 4 through the air guide hole 61, the waste gas is guided into the waste gas detection device through the air guide pipe 4 to be detected, the top of the sampling tube 1 is in threaded connection with the top cover 3, the top cover 3 is provided with the second air inlet hole 31 communicated with the balance air cavity, the second air inlet hole 31 is internally provided with the two-way air valve 32, when the internal air pressure of the balance air cavity is increased, the two-way air valve 32 can enable the internal air of the balance air cavity to be discharged outwards through the second air inlet hole 31, and when the internal air pressure of the balance air cavity is reduced, the two-way air valve 32 can enable the external air to enter the balance air cavity through the second air inlet hole 31.

The top of the air duct 4 penetrates through the top cover 3 and extends to the outside of the sampling tube 1, two handles 5 are symmetrically fixed on the outer wall of the section of the air duct 4, the air duct 4 is pushed and pulled up and down by holding the two handles 5 through two hands, the piston 6 is driven to move up and down by the air duct 4, and then the collection of waste gas and the derivation of the waste gas are completed.

It should be noted that, the section of thick bamboo wall of sampling tube 1 is bilayer structure, and is provided with annular closed heat preservation material layer 11 in the section of thick bamboo wall intermediate layer of sampling tube 1, plays the heat retaining effect, reduces heat loss, avoids waste gas to change because of temperature variation, remains the original characteristic of waste gas, and piston 6 is fixed to inlay on the contact surface of sampling tube 1 inner chamber wall and is equipped with the sealing washer to guarantee the leakproofness, avoid the leakage of waste gas.

The working principle and the using flow of the utility model are as follows: when the sampling nozzle 2 is used, the sampling nozzle 2 can be placed at the outlet of industrial waste gas to be collected, the two handles 5 are held by two hands to upwards pull the air guide pipe 4, the air guide pipe 4 drives the piston 6 to move upwards, in the process, the air pressure in the collecting cavity is reduced by the upward movement of the piston 6, the light plug 83 can overcome the elastic force of the spring 86 to leave the conical bayonet 87, the air path of the built-in pipe 81 is opened, waste gas can enter the collecting cavity through the built-in pipe 81 in the nozzle 2 and the first air inlet 12 at the bottom of the sampling cylinder 1, the air pressure in the balance air cavity is increased by the upward movement of the piston 6, the bidirectional air valve 32 is opened, the air in the balance air cavity can be discharged outwards, so that the normal movement of the piston 6 is realized, after the collection is finished, the air guide pipe 4 is stopped from being pulled, the light plug 83 can be automatically attached to the conical bayonet 87 under the elastic force of the spring 86, the built-in pipe 81 is sealed, and the pipeline of the built-in pipe 81 is prevented from leaking;

can be with air duct 4 and exhaust gas detection device's input pipeline intercommunication, then push down air duct 4 through handle 5, promote piston 6 downward movement by air duct 4, the downtake of piston 6 makes the collection intracavity atmospheric pressure increase, make one-way pneumatic valve 7 open under the atmospheric pressure effect, collection intracavity air and the waste gas accessible air duct 61 and the leading-in exhaust gas detection device of waste gas are interior to detect through air duct 4, and the downtake of piston 6 makes balanced intracavity atmospheric pressure reduce, two-way pneumatic valve 32 are opened, make the outside air can enter into in the balanced air cavity, the stability of balanced intracavity atmospheric pressure has been realized, make piston 6 can normal motion, in the collection process, the collection chamber belongs to under the confined environment all the time, can avoid the leakage of waste gas, seal the heat preservation to the collection chamber simultaneously, guarantee the stability of waste gas collection volume.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a quick sampling device of exhaust gas detection, includes sampling tube (1), installs sampling tube (2) in sampling tube (1) bottom, slides and sets up piston (6) in sampling tube (1) inboard, its characterized in that, the bottom inboard of sampling tube (2) is provided with from shrink formula shutoff piece (8), from shrink formula shutoff piece (8) include built-in pipe (81), fixed disk (82), light cock body (83) and elastic component, built-in pipe (81) are fixed at the top surface of fixed disk (82), fixed disk (82) are fixed on the inner wall of sampling tube (2), light cock body (83) set up in the top of built-in pipe (81) and through elastic component and built-in pipe (81) elastic connection, the inner chamber of sampling tube (1) forms the collection chamber in the below region of piston (6), the inner chamber of sampling tube (1) forms the balance air chamber in the top region of piston (6), the bottom surface of sampling tube (1) has been seted up and has been made sampling tube (2) and the top surface of fixed disk (82) is fixed on the inner wall of sampling tube (1) and the inner tube (81), the top cap (61) that communicates with each other with air vent (61) of sampling tube (1), the top cover (3) is provided with a second air inlet hole (31) communicated with the balance air cavity.

2. The rapid sampling device for exhaust gas detection according to claim 1, wherein the elastic member comprises a spring (86), a first convex ring (84) is fixedly connected to the outer wall of the light plug body (83), a second convex ring (85) is fixedly connected to the outer wall of the built-in pipe (81), and the upper end and the lower end of the spring (86) are respectively fixedly connected with the first convex ring (84) and the second convex ring (85).

3. A rapid sampling device for exhaust gas detection according to claim 1, characterized in that the lightweight plug body (83) has an inverted bucket-like structure.

4. The rapid sampling device for exhaust gas detection as claimed in claim 1, wherein the inner side of the top of the inner tube (81) is provided with a conical bayonet (87) adapted to the light plug body (83).

5. The rapid sampling device for exhaust gas detection according to claim 1, wherein the air vent (61) is internally provided with a one-way air valve (7), and the one-way air valve (7) can only enable air in the collection cavity to enter the air vent (4).

6. The rapid sampling device for exhaust gas detection according to claim 1, wherein a bi-directional air valve (32) is arranged in the second air inlet hole (31), the bi-directional air valve (32) can enable the air in the balance air cavity to be discharged outwards from the second air inlet hole (31) when the internal air pressure of the balance air cavity is increased, and the bi-directional air valve (32) can enable the external air to enter the balance air cavity from the second air inlet hole (31) when the internal air pressure of the balance air cavity is reduced.

7. The rapid sampling device for exhaust gas detection according to claim 1, wherein the top of the gas duct (4) penetrates the top cover (3) and extends out of the sampling tube (1).

8. The rapid sampling device for exhaust gas detection according to claim 7, wherein two handles (5) are symmetrically fixed on the outer wall of the section of the gas guide tube (4) located outside the sampling tube (1).

9. The rapid sampling device for waste gas detection according to claim 1, wherein the wall of the sampling tube (1) is of a double-layer structure, and an annular closed heat-insulating material layer (11) is arranged in a wall interlayer of the sampling tube (1).

10. The rapid sampling device for exhaust gas detection according to claim 1, wherein the piston (6) is fixedly embedded with a sealing ring on the contact surface of the inner cavity wall of the sampling tube (1).