CN214408248U

CN214408248U - Sampling pipe with detachable working condition box

Info

Publication number: CN214408248U
Application number: CN202120277748.1U
Authority: CN
Inventors: 曹显鸿; 刘帅敬; 张亮; 刘景超
Original assignee: Qingdao Minghua Electronic Instrument Co ltd
Current assignee: Qingdao Minghua Electronic Instrument Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-10-15
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a sampling tube with detachable operating mode box, including sampling tube handle and sampling tube, be provided with detachable operating mode box in the sampling tube handle, be provided with pressure sensor, spring contact seat and butt joint air cock in the operating mode box, pressure sensor sets up in butt joint air cock department, is provided with spring contact and pneumatics conversion equipment in the sampling tube handle, and the spring contact matches with spring contact seat to realize signal transmission; the air pressure conversion device is provided with an air inlet A, an air outlet B1 and an air outlet B2, the air inlet A is connected with the pitot tube, the air outlet B1 is connected with the bottom air tap of the sampling tube handle, and the air outlet B2 is connected with the butt joint air tap of the working condition box. This scheme sampling pipe can compromise old-fashioned smoke and dust host computer simultaneously, has reduced the wasting of resources problem that old-fashioned smoke and dust host computer can not be compatible, has increased flexibility and the commonality that sampling pipe used, and its structural design is ingenious, need not to connect the silicone tube of overlength, uses the operation more convenient and high-efficient.

Description

Sampling pipe with detachable working condition box

Technical Field

The utility model relates to a smoke and dust sampling technical field, concretely relates to but sampling pipe of split operating mode box to when solving pollution sources low concentration smoke and dust sampling, carry the problem that the pipeline is too much, overweight, make lightweight, the portability of sampling more.

Background

With the development of the environmental protection career of China, most of environment detection equipment gradually develops towards miniaturization, light weight and portability. Wherein, the low concentration smoke dust sampling pipe in the pollution source sampling is more common equipment in the portable sampling equipment.

As shown in fig. 1, in the prior art, a pitot tube 3 is arranged at the front end of a sampling tube 2, the front end of the sampling tube needs to extend into a flue, and the rear end of the sampling tube passes through a bottom air nozzle 9 of a sampling tube handle 1 and is connected to a pressure sensor inside a smoke host through a silicone tube 4. Along with the portable development of sampling equipment, the drawback of this kind of connected mode shows gradually, need take two silica gel tubes about five meters long with oneself to connect pitot tube and smoke and dust host computer during normal sampling promptly, and connecting line is loaded down with trivial details, increase sampling equipment weight when this kind of connected mode uses, brings very big inconvenience for the sampling.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve present sampling pipe connecting line loaded down with trivial details, sampling equipment weight is big, defect such as the sampling is inconvenient, propose a sampling pipe that has removable branch operating mode box, innovative solution need the silicone tube overlength of connecting, too loaded down with trivial details problem, make the sampling more convenient, high-efficient.

The utility model discloses an adopt following technical scheme to realize: a sampling tube with a detachable working condition box comprises a sampling tube handle and a sampling tube, wherein the sampling tube handle is internally provided with the detachable working condition box;

the pressure sensor, the spring contact seat and the butt joint air tap are arranged in the working condition box, the pressure sensor is arranged at the butt joint air tap, the spring contact and the air pressure conversion device are arranged in the sampling pipe handle, and the spring contact is matched with the spring contact seat to realize signal transmission;

the air pressure conversion device is provided with an air inlet A, an air outlet B1 and an air outlet B2, the air inlet A is connected with the pitot tube, the air outlet B1 is connected with the bottom air tap of the sampling tube handle, and the air outlet B2 is connected with the butt joint air tap of the working condition box.

Further, the air pressure conversion device comprises a conversion body, a pressure switching shaft, an elastic piece and a guide pipe;

the conversion body comprises an air inlet A channel, an air outlet B1 channel and an air outlet B2 channel, the pressure switching shaft is arranged in the air outlet B2 channel, a middle vent hole is arranged in the pressure switching shaft, a side vent hole is arranged on the side wall below the middle vent hole, the middle vent hole is only communicated with the side vent hole, the lower end of the pressure switching shaft is a sealing head, the sealing head is positioned below the side vent hole, and the sealing head is used for sealing the air outlet B1 channel or the air outlet B2 channel;

the elastic piece is sleeved outside the pressure switching shaft, the guide pipe is located outside the elastic piece, when the working condition box is connected, the butt joint air nozzle is inserted into the air outlet channel, the butt joint air nozzle extrudes the pressure switching shaft and compresses the spring, the pressure switching shaft moves downwards integrally at the moment, the side vent hole is communicated with the air inlet A channel, the air inlet A channel is communicated with the air outlet B2 channel, when the working condition box is not connected, the elastic piece is not compressed, the end enclosure does not move downwards to plug the air outlet B2 channel, and the air inlet A channel is communicated with the air outlet B1 channel at the moment.

Furthermore, the elastic part is made of a spring or elastic rubber material.

Furthermore, in order to play a better sealing role, a sealing bulge is arranged on the inner side wall of the conversion body of the space where the seal head is located.

Further, in order to realize that operating mode box and sampling pipe handle are better fixed, be provided with polylith adsorption magnet on the operating mode box to realize the fixed of operating mode box and sampling pipe handle.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

this scheme is through setting up pressure sensor in detachable operating mode box to design atmospheric pressure conversion equipment, realize the sampling pipe, pitot tube and operating mode box's ingenious connection, the sampling pipe can compromise old-fashioned smoke and dust host computer simultaneously (take off operating mode box, normally connect the silicone tube can), the wasting of resources problem that old-fashioned smoke and dust host computer can not be compatible has been reduced, flexibility and the commonality that the sampling pipe used have been increased, its structural design is ingenious, need not to connect the silicone tube of overlength, it is more convenient and high-efficient to use the operation.

Drawings

FIG. 1 is a schematic view of a connection structure between a smoke host and a sampling pipe handle in the prior art;

FIG. 2 is a schematic view of a connection structure between a handle of a sampling tube and a working condition box according to an embodiment of the present invention;

FIG. 3 is a schematic view of an internal structure of the working condition box according to the embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of an air pressure conversion device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the pressure switching shaft of fig. 4;

FIG. 6 is a schematic view of the through structure of the air inlet A and the air outlet B1 in FIG. 4;

FIG. 7 is a schematic view of the through structure of the air inlet A and the air outlet B2 in FIG. 4;

fig. 8 is a schematic view of a gas circuit connection structure of the gas pressure conversion device according to the embodiment of the present invention;

wherein, 1, a sampling tube handle; 2. a sampling tube; 3. a pitot tube; 4. a silicone tube; 5. a spring contact base; 6. butting an air faucet; 7. a spring contact; 8. an air pressure conversion device; 81. a pressure switching shaft; 811. a middle vent hole; 812. a side vent; 813. sealing the end; 82. a spring; 83. a guide tube; 84. a gasket; 85. converting the body; 86. an air inlet A; 87. an air outlet B1; 88. an air outlet B2; 89. sealing the protrusion; 9. a bottom air tap; 10. and (5) a working condition box.

Detailed Description

In order to clearly understand the above objects, features and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.

The utility model provides a sampling pipe with but split operating mode box is applicable to pollution sources check out test set, and its key thought is: connect original pitot tube to the inside pressure sensor of smoke and dust host computer, integrated to a detachable operating mode box, this operating mode box can insert inside the sampling pipe handle integrative with the pitot tube, through the contact of spring contact and spring contact seat, the signal of transmission collection, new-type smoke and dust host computer of collocation (inside no pressure sensor) uses, so, two 5 meters long silicone tube connections have been saved promptly, sampling efficiency has been improved greatly. If the sampling pipe needs to be connected with traditional smoke and dust host computer, the operating mode box that can be convenient pull down is connected with old-fashioned smoke and dust host computer through the long silicone tube for the air cock of sampling pipe handle bottom, does also accomplish the sampling.

Specifically, as shown in fig. 2 and 3, the sampling tube with the detachable operating condition box includes a sampling tube handle 1 and a sampling tube 2, a detachable operating condition box 10 is disposed in the sampling tube handle 1, a pressure sensor, a spring contact seat 5 and a butt joint air cock 6 are disposed in the operating condition box 10, the pressure sensor is disposed at the butt joint air cock 6, a spring contact 7 and an air pressure conversion device 8 are disposed in the sampling tube handle 1, the spring contact 7 is matched with the spring contact seat 5 to achieve signal transmission (the signal transmission mode of the spring contact seat and the spring contact is the prior art, and detailed description is not given here), an air inlet a, an air outlet B1 and an air outlet B2 are disposed on the air pressure conversion device 8, the air inlet a is connected with the pitot tube 3, the air outlet B1 is connected with a bottom air cock 9 of the sampling tube handle 1, and the air outlet B2 is connected with the butt joint air cock 6 of the operating condition box 10, in addition, in order to realize that operating mode box 10 and sampling tube handle 1 are better fixed, be provided with polylith adsorption magnet on operating mode box 10 to realize that operating mode box 10 and sampling tube handle 1's is fixed.

As shown in fig. 4, the air pressure conversion device 8 includes a conversion body 85, a pressure switching shaft 81, a spring 82, a guide pipe 83 and a gasket 84, in this embodiment, the conversion body 85 is substantially an air pressure conversion three-way (three-way, four-way, etc. can be designed according to actual conditions), a material such as rubber, metal, or plastic can be used, the material includes an air inlet a channel, an air outlet B1 channel and an air outlet B2 channel, the pressure switching shaft 81 is structured as shown in fig. 5, the pressure switching shaft 81 is disposed in the air outlet B2 channel, a middle vent hole 811 is disposed in the pressure switching shaft 81, a side vent hole 812 is disposed on a side wall below the middle vent hole 811, the middle vent hole 811 is only communicated with the side vent hole 812, a sealing head 813 is disposed at a lower end of the pressure switching shaft 81, the sealing head is located below the side vent hole 812, the sealing head 813 is used for sealing the air outlet B1 channel or the air outlet B2 channel, in order to play a better role in sealing, a sealing bulge 89 is arranged on the inner side wall of the conversion body 85 of the space where the end socket 813 is located, the spring 82 is sleeved outside the pressure switching shaft 81, the guide pipe 83 is positioned outside the spring, the gasket 84 is positioned below the spring 82 and the guide pipe 83, when the butt joint air faucet 6 is inserted into the air outlet B2 channel (a joint working condition box), the butt air tap 6 presses the pressure switching shaft 81 and compresses the spring 82 (in this embodiment, the spring may be replaced by an elastic rubber material, etc.), at this time, the pressure switching shaft 81 moves down integrally, the side vent 812 is communicated with the air inlet a channel, and thus the air inlet a channel is communicated with the air outlet B2 channel (as shown in fig. 7), when the working condition box is not connected, the spring 82 is not compressed, the sealing head 813 does not move downwards to seal the passage of the air outlet B2, and the passage of the air inlet A is communicated with the passage of the air outlet B1.

The utility model discloses a pitot tube 3 is as shown in figure 8 to pressure sensor's gas circuit principle, and gas passes through the pitot tube from the flue and transmits sampling pipe handle front end after, then is connected to atmospheric pressure conversion equipment's air inlet A (86), atmospheric pressure conversion equipment's other both ends, gas outlet B1(87) and gas outlet B2(88) are connected with the connection air cock 9 and the operating mode box butt joint air cock of sampling pipe handle bottom respectively promptly.

The principle and the function of the air pressure conversion device are as follows: when the sampling tube handle 1 is internally provided with the working condition box 10, the spring 82 in the device bounces the pressure switching shaft 81, the side vent hole 812 at the bottom is sealed by the sealing bulge 89 (rubber piece), namely the air outlet B2 is sealed, and the air inlet A is communicated with the air outlet B1; when the operation condition box 10 is inserted into the sampling tube handle 1 (i.e., it is butted with the air outlet B2), the butt air tap 6 of the operation condition box presses down the pressure switching shaft 81, the air outlet B1 is sealed, and the middle vent hole 811 and the bottom side vent hole 812 of the pressure switching shaft 81 communicate the air inlet a with the air outlet B2.

To sum up, this scheme the sampling pipe pass through the design of operating mode box and atmospheric pressure change-over spindle, can arrange new-type smoke and dust host computer (inside no pressure sensor) and use, also can be connected with old-fashioned smoke and dust host computer through the long silicone tube for the air cock of sampling pipe handle bottom, the commonality is strong, convenient to use has improved sampling efficiency greatly. In addition, need to explain, in this scheme, the operating mode box can be in a flexible way with sampling tube handle combination, split, is not limited to insert sampling tube handle from the side, also can hang in sampling tube handle one side.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A sampling tube with a detachable working condition box comprises a sampling tube handle (1) and a sampling tube (2), and is characterized in that the sampling tube handle (1) is internally provided with the detachable working condition box (10);

a pressure sensor, a spring contact seat (5) and a butt joint air tap (6) are arranged in the working condition box (10), the pressure sensor is arranged at the butt joint air tap (6), a spring contact (7) and an air pressure conversion device (8) are arranged in the sampling pipe handle (1), and the spring contact (7) is matched with the spring contact seat (5) to realize signal transmission;

the pneumatic pressure conversion device (8) is provided with an air inlet A, an air outlet B1 and an air outlet B2, the air inlet A is connected with the pitot tube (3), the air outlet B1 is connected with a bottom air nozzle (9) of the sampling tube handle (1), and the air outlet B2 is connected with a butt joint air nozzle (6) of the working condition box (10).

2. The sample tube with the detachable condition cartridge as claimed in claim 1, wherein: the air pressure conversion device (8) comprises a conversion body (85), a pressure switching shaft (81), an elastic piece and a guide pipe (83);

the conversion body (85) comprises an air inlet A channel, an air outlet B1 channel and an air outlet B2 channel, a pressure switching shaft (81) is arranged in the air outlet B2 channel, a middle vent hole (811) is arranged in the pressure switching shaft (81), a side vent hole (812) is arranged on the side wall below the middle vent hole (811), the middle vent hole (811) is only communicated with the side vent hole (812), the lower end of the pressure switching shaft (81) is a sealing head (813), the sealing head (813) is positioned below the side vent hole (812), and the sealing head (813) is used for sealing the air outlet B1 channel or the air outlet B2 channel; the elastic member is sleeved outside the pressure switching shaft (81), and the guide pipe (83) is positioned outside the elastic member.

3. The sample tube with the detachable condition cartridge as claimed in claim 2, wherein: the elastic piece is made of a spring or elastic rubber material.

4. The sample tube with the detachable condition cartridge as claimed in claim 2, wherein: and a sealing bulge (89) is arranged on the inner side wall of the conversion body (85) of the space where the end enclosure (813) is located.

5. The sample tube with the detachable condition cartridge as claimed in claim 1, wherein: be provided with polylith adsorption magnet on operating mode box (10) to realize the fixed of operating mode box (10) and sampling pipe handle (1).