CN210834371U

CN210834371U - Vacuum air bag sampling device

Info

Publication number: CN210834371U
Application number: CN201921837110.8U
Authority: CN
Inventors: 李小勇; 李明慧
Original assignee: Henan Zhongyu Testing Technology Co ltd
Current assignee: Henan Zhongyu Testing Technology Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-06-23
Anticipated expiration: 2029-10-26

Abstract

The utility model relates to a vacuum air bag sampling device, which comprises a sampling box, an air bag and an air pump, wherein the air pump is connected with a first hose, one end of the first hose extends into the sampling box, and the end part of the first hose extending into the sampling box is connected with a sampling branch pipe; the air bag is connected with a second hose, and the end part of the second hose is connected with the sampling branch pipe; a butt joint device is arranged at the connecting part of the second hose and the sampling branch pipe, and comprises a first thread on the outer wall of the sampling branch pipe and a first rubber ring fixed at the port of the sampling branch pipe; the butt joint device also comprises a metal end pipe fixedly connected with the port of the second hose and a second rubber ring fixed at the port of the metal end pipe; the metal end pipe is sleeved with a connecting sleeve, and one end of the connecting sleeve, which is far away from the end opening of the metal end pipe, is integrally provided with a baffle ring; the inner wall of the connecting sleeve is provided with a second thread, and the first thread is matched with the second thread. The utility model discloses have the effect of the air pocket of convenient to detach and installation sampling usefulness.

Description

Vacuum air bag sampling device

Technical Field

The utility model belongs to the technical field of the technique of air sampling and specifically relates to a vacuum air pocket sampling device is related to.

Background

In order to detect the quality of the atmosphere, the atmosphere must first be sampled.

At present, patent document with publication number CN203785935U discloses an air bag sampler of a vacuum box, which comprises an acquisition device, a power device and an acquisition box, wherein the acquisition device is positioned in the acquisition box, and the power device is communicated with the interior of the acquisition box through a conduit; the collecting box consists of a box cover and a box body, and the collecting device consists of an air inlet valve, a tee joint, an exhaust valve, an air tap and an air bag; the air inlet valve and the exhaust valve are arranged on the box body and are communicated with two open ends of a tee joint arranged in the box body and facing towards the box body through a guide pipe, and the other open end of the tee joint departing from the box body is communicated with the air bag through a guide pipe; the air bag is arranged at the bottom of the box body, the air nozzle is arranged on the box body, and the external power device is communicated with the inner side of the box body.

The air bag sampler of the vacuum box has the following defects: after the air bag is used for sampling the atmosphere, if the gas in the air bag needs to be detected, the gas can be detected only after being discharged through the exhaust valve, and the air bag cannot be detached from the collecting box and directly conveyed to a detection position, so that inconvenience is brought to detection work.

SUMMERY OF THE UTILITY MODEL

To the not enough of existence among the above-mentioned prior art, the utility model aims at providing a vacuum air bag sampling device, it has the effect of the air bag of convenient to detach and installation sampling usefulness through setting up interfacing apparatus in sampling branch pipe and second hose connection department.

The above object of the present invention is achieved by the following technical solutions:

a vacuum air bag sampling device comprises a sampling box with a cavity structure, an air bag arranged in the sampling box and an air pump connected with the air bag, wherein the air pump is connected with a first hose, one end of the first hose extends into the sampling box, and the end part of the first hose extending into the sampling box is connected with a sampling branch pipe; the air bag is connected with a second hose, and the end part of the second hose is connected with the sampling branch pipe; a butt joint device is arranged at the connecting part of the second hose and the sampling branch pipe, and comprises a first thread arranged on the outer wall of the sampling branch pipe and a first rubber ring fixedly arranged at the port of the sampling branch pipe; the butt joint device also comprises a metal end pipe fixedly connected with the port of the second hose and a second rubber ring fixedly arranged at the port of the metal end pipe; the metal end pipe is sleeved with a connecting sleeve, and one end of the connecting sleeve, which is far away from the end opening of the metal end pipe, is integrally provided with a baffle ring; and a second thread is formed on the inner wall of the connecting sleeve, and the first thread is matched with the second thread.

By adopting the technical scheme, when the atmosphere is sampled, the metal end pipe is butted at the port of the sampling branch pipe, and the connecting sleeve is rotated to enable the connecting sleeve to be in threaded connection with the sampling branch pipe, namely the air bag can be connected with the sampling branch pipe; meanwhile, the baffle ring can force the first rubber ring and the second rubber ring to extrude with each other, so that the air tightness of the interface is improved; after sampling is finished, the connecting sleeve is rotated to separate the metal end pipe from the sampling branch pipe, so that the air bag can be taken out of the sampling box; therefore, the utility model discloses have the effect of the air pocket that can convenient to detach and installation sampling usefulness.

The utility model discloses a further set up to: the end part of the first hose extending into the sampling box is simultaneously connected with an air suction branch pipe and an air supply branch pipe; the air exhaust branch pipe is provided with a first valve and a first one-way valve, and the air supply branch pipe is provided with a second valve and a second one-way valve; the end parts of the air exhaust branch pipe and the air supply branch pipe, which are far away from the first hose, are communicated with each other and are simultaneously communicated with the sampling branch pipe.

By adopting the technical scheme, after the air bag is installed, the second valve is closed and the first valve is opened before sampling, the air bag is vacuumized by the air pump, then the first valve is closed and the second valve is opened, and air is supplied to the air bag by the air pump to finish sampling; air in the air bag is discharged firstly and then sampled, so that the sampled gas sample can better reflect real atmospheric quality.

The utility model discloses a further set up to: an annular flange is integrally arranged on the outer wall of the metal end pipe, and a baffle ring of the connecting sleeve is arranged between the second rubber ring and the flange.

By adopting the technical scheme, when the connecting sleeve is not connected with the sampling branch pipe, the baffle ring can limit the position of the connecting sleeve between the flange and the second rubber ring, so that the connecting sleeve is prevented from falling off from the metal end pipe or sliding onto the second hose.

The utility model discloses a further set up to: and a filtering cotton core is arranged inside the metal end pipe.

Through adopting above-mentioned technical scheme, the inside filter cotton core of metal end pipe can filter the particulate matter in the atmosphere of sampling, improves the gaseous cleanliness of sampling.

The utility model discloses a further set up to: the outer wall of the connecting sleeve is provided with a plurality of ribs which are uniformly arranged along the circumferential direction of the outer wall of the connecting sleeve, and the length direction of the ribs is the same as the direction of the central line of the connecting sleeve.

Through adopting above-mentioned technical scheme, when rotating the adapter sleeve and connecting, the bead is favorable to increasing the frictional force between hand and the adapter sleeve, makes the staff rotate the adapter sleeve more easily.

The utility model discloses a further set up to: a baffle plate is arranged in the sampling box and divides the sampling box into an upper layer and a lower layer; the sampling branch pipe and the air supply branch pipe are arranged above the partition plate, and the air bag is arranged below the partition plate; the opening part of sampling box articulates there is the chamber door, is provided with the hasp on the chamber door, is provided with the hasp seat with hasp matched with on the sampling box.

By adopting the technical scheme, the door hasp is buckled on the hasp seat and then locked during sampling, so that the door and the sampling box can be fixed; the air bag is arranged in a limited space below the partition plate, so that the phenomenon that the air bag is expanded to an overlarge volume to cause the explosion of the air bag when sampling is avoided.

The utility model discloses a further set up to: the partition plate is provided with an accommodating groove, the accommodating groove penetrates through the upper surface and the lower surface of the partition plate, and the accommodating groove is communicated with the edge, close to the opening, of the partition plate; the end part of the accommodating groove, which is positioned in the partition plate, is provided with a round hole.

By adopting the technical scheme, before sampling gas, a worker plugs the hose to the round hole through the accommodating groove, and the second hose expands and becomes thick during sampling, so that the second hose can be clamped at the round hole to avoid oppressing the air bag; after sampling, the staff can hold the second hose to draw the second hose out of the containing groove.

The utility model discloses a further set up to: the box door is provided with an observation window, and the observation window corresponds to the lower layer of the sampling box.

Through adopting above-mentioned technical scheme, the staff can observe the condition of sampling box lower floor through the observation window to close the air pump when the air pocket expands to a certain extent, improve the security of sampling.

To sum up, the utility model discloses a beneficial technological effect does:

1. when sampling the atmosphere, butt-connecting the metal end pipe at the port of the sampling branch pipe, rotating the connecting sleeve to enable the connecting sleeve to be in threaded connection with the sampling branch pipe, and enabling the air bag to be connected with the sampling branch pipe; meanwhile, the baffle ring can force the first rubber ring and the second rubber ring to extrude with each other, so that the air tightness of the interface is improved; after sampling is finished, the connecting sleeve is rotated to separate the metal end pipe from the sampling branch pipe, so that the air bag can be taken out of the sampling box;

2. the air in the air bag is firstly exhausted and then sampled, so that the sampled gas sample can better reflect the real atmospheric quality; the limit of the flange and the second rubber ring is beneficial to preventing the connecting sleeve from falling off from the metal end pipe or sliding onto the second hose; the filter cotton core is beneficial to improving the cleanliness of the sampled gas;

3. the convex edges are beneficial to increasing the friction force between the hand and the connecting sleeve, so that the connecting sleeve can be rotated more easily by workers; the air bag is arranged in a limited space below the partition plate, so that the air bag is prevented from being exploded due to the fact that the air bag expands to an overlarge volume during sampling; the accommodating groove prevents the second hose from pressing the air bag; the staff can observe the condition of sampling box lower floor through the observation window.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the docking device;

FIG. 3 is a schematic view showing a filter element;

fig. 4 is a schematic view of the structure of the separator.

In the figure, 1, a sampling box; 11. a partition plate; 111. accommodating grooves; 112. a circular hole; 12. a box door; 121. a door hasp; 122. a buckle seat; 123. an observation window; 2. an air pump; 21. a first hose; 22. an air exhaust branch pipe; 221. a first valve; 222. a first check valve; 23. an air supply branch pipe; 231. a second valve; 232. a second one-way valve; 3. sampling branch pipes; 4. an air bag; 41. a second hose; 5. a docking device; 51. a first thread; 52. a first rubber ring; 53. a metal end tube; 531. a flange; 532. filtering the cotton core; 533. cutting off the valve; 54. a second rubber ring; 55. connecting sleeves; 551. a baffle ring; 552. a second thread; 553. and (7) a rib.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the vacuum air bag sampling device disclosed by the present invention comprises a sampling box 1, wherein an opening is arranged on one side surface of the sampling box 1; the interior of the sampling box 1 is of a cavity structure, a partition plate 11 is arranged in the sampling box 1, and the sampling box 1 is divided into an upper layer and a lower layer by the partition plate 11; a box door 12 is hinged to an opening of the sampling box 1, a door hasp 121 is arranged on the box door 12, a hasp seat 122 matched with the door hasp 121 is arranged on the sampling box 1, the door hasp 121 is buckled on the hasp seat 122 and then locked, and the box door 12 and the sampling box 1 can be fixed; the box door 12 is provided with an observation window 123, the observation window 123 corresponds to the lower layer of the sampling box 1, and the observation window 123 can facilitate the staff to observe the inside condition of the sampling box 1.

Referring to fig. 1, an air pump 2 is arranged outside a sampling box 1, and the air pump 2 can supply air or exhaust air; the air pump 2 is connected with a first hose 21, and one end of the first hose 21 penetrates through the upper part of the sampling box 1 and extends into the sampling box 1; the end part of the first hose 21 extending into the sampling box 1 is connected with two branch pipes, namely an air suction branch pipe 22 and an air supply branch pipe 23; the air suction branch pipe 22 is provided with a first valve 221 and a first one-way valve 222, and the first one-way valve 222 only allows air flow to enter the air pump 2 through the air suction branch pipe 22; the air supply branch pipe 23 is provided with a second valve 231 and a second check valve 232, and the second check valve 232 allows only the air flow from the air pump 2 to flow out through the air supply branch pipe 23.

Referring to fig. 1 and 2, the ends of the suction manifold 22 and the air supply manifold 23 remote from the first hose 21 communicate with each other, and the sampling manifold 3 is connected thereto; an air bag 4 is arranged on the lower layer of the sampling box 1, and the air bag 4 is connected with a second hose 41; the end of the second hose 41 passes through the partition 11 to extend above the partition 11 and is connected with the sampling branch pipe 3; the connecting part of the second hose 41 and the sampling branch pipe 3 is provided with a docking device 5 which is convenient for the second hose 41 and the sampling branch pipe 3 to be connected and detached.

Referring to fig. 1 and 2, the docking device 5 includes a first thread 51 disposed on the outer wall of the sampling branch pipe 3, and further includes a first rubber ring 52 fixedly disposed at a port of the sampling branch pipe 3; a metal end pipe 53 is fixedly connected to a port of the second hose 41, a second rubber ring 54 is fixedly arranged at the port of the metal end pipe 53, and the specification of the second rubber ring 54 is the same as that of the first rubber ring 52; an annular flange 531 is integrally arranged on the outer wall of the metal end pipe 53, a connecting sleeve 55 is sleeved between the flange 531 and the second rubber ring 54, and the inner diameter of the connecting sleeve 55 is larger than the outer diameters of the second rubber ring 54 and the flange 531; a baffle ring 551 is integrally arranged at one end of the connecting sleeve 55 far away from the end opening of the metal end pipe 53, the inner diameter of the baffle ring 551 is smaller than the outer diameters of the rubber ring and the flange 531, and the baffle ring 551 can limit the position of the connecting sleeve 55 between the flange 531 and the second rubber ring 54; the inner wall of the connecting sleeve 55 is provided with a second thread 552, and the second thread 552 is matched with the first thread 51; with reference to fig. 3, a filter cotton core 532 is disposed inside the metal end tube 53, and the filter cotton core 532 can filter particulate matters in the sampled atmosphere, so as to improve the cleanliness of the sampled gas; when the second hose 41 needs to be butted with the sampling branch pipe 3, the connecting sleeve 55 is rotated to enable the connecting sleeve 55 to be in threaded connection with the sampling branch pipe 3, and meanwhile, the baffle ring 551 can force the first rubber ring 52 and the second rubber ring 54 to be mutually extruded, so that the air tightness at the interface is improved; when it is necessary to detach the second hose 41 and the sampling branch tube 3 from each other, the second branch tube can be separated from the sampling branch tube 3 by rotating the connection sleeve 55 to separate the connection sleeve 55 from the sampling branch tube 3.

Referring to fig. 1 and 2, the outer wall of the connection sleeve 55 is provided with a plurality of ribs 553, the ribs 553 are uniformly arranged along the circumferential direction of the outer wall of the connection sleeve 55, and the length direction of the ribs 553 is the same as the central line direction of the connection sleeve 55; when the connection sleeve 55 is rotated, the protruding ribs 553 are beneficial to increase the friction between the hand and the connection sleeve 55, so that the worker can more easily rotate the connection sleeve 55; the metal end pipe 53 is provided with a cut-off valve 533, when the gas bag 4 is sampled, the cut-off valve 533 is closed, and the gas bag 4 can be taken out from the sampling box 1 by detaching the metal end pipe 53 from the sampling branch pipe 3.

Referring to fig. 1 and 4, the partition plate 11 is provided with a receiving groove 111, the receiving groove 111 penetrates through the upper and lower surfaces of the partition plate 11, and the receiving groove 111 is communicated with the edge of the partition plate 11 near the opening; the end part of the accommodating groove 111, which is positioned in the partition plate 11, is provided with a round hole 112, before sampling gas, a worker plugs the hose to the round hole 112 through the accommodating groove 111, and during sampling, the second hose 41 expands to be thick, so that the hose can be clamped at the round hole 112; the air bag 4 is arranged in a limited space below the partition plate 11, which is beneficial to avoiding the explosion of the air bag 4 caused by the fact that the air bag 4 expands to an overlarge volume when sampling.

The working principle of the utility model is that when sampling the atmosphere, the metal end pipe 53 is butted at the port of the sampling branch pipe 3, the connecting sleeve 55 is rotated to connect the connecting sleeve 55 on the sampling branch pipe 3 by screw thread, and the air bag 4 can be connected with the sampling branch pipe 3; before sampling, closing the second valve 231, opening the first valve 221, vacuumizing the air bag 4 by the air pump 2, closing the first valve 221, opening the second valve 231, and sending air to the air bag 4 by the air pump 2 to finish sampling; after sampling, the connecting sleeve 55 is rotated to separate the metal end pipe 53 from the sampling branch pipe 3, so that the air bag 4 can be taken out of the sampling box 1.

The embodiment of the present invention is a preferred embodiment of the present invention, which is not limited in this way to the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a vacuum air bag sampling device, includes sampling case (1) of cavity structure, sets up air bag (4) in sampling case (1) and air pump (2) that are connected with air bag (4), its characterized in that: the air pump (2) is connected with a first hose (21), one end of the first hose (21) extends into the sampling box (1), and the end part of the first hose (21) extending into the sampling box (1) is connected with a sampling branch pipe (3); the air bag (4) is connected with a second hose (41), and the end part of the second hose (41) is connected with the sampling branch pipe (3); a butt joint device (5) is arranged at the position where the second hose (41) is connected with the sampling branch pipe (3), and the butt joint device (5) comprises a first thread (51) arranged on the outer wall of the sampling branch pipe (3) and a first rubber ring (52) fixedly arranged at the port of the sampling branch pipe (3); the butt joint device (5) further comprises a metal end pipe (53) fixedly connected to the port of the second hose (41) and a second rubber ring (54) fixedly arranged at the port of the metal end pipe (53); the connecting sleeve (55) is sleeved on the metal end pipe (53), and a baffle ring (551) is integrally arranged at one end, away from the end opening of the metal end pipe (53), of the connecting sleeve (55); and a second thread (552) is formed on the inner wall of the connecting sleeve (55), and the first thread (51) is matched with the second thread (552).

2. A vacuum air bag sampling device according to claim 1 wherein: the end part of the first hose (21) extending into the sampling box (1) is simultaneously connected with an air suction branch pipe (22) and an air supply branch pipe (23); a first valve (221) and a first one-way valve (222) are arranged on the air exhaust branch pipe (22), and a second valve (231) and a second one-way valve (232) are arranged on the air supply branch pipe (23); the ends of the air suction branch pipe (22) and the air supply branch pipe (23) far away from the first hose (21) are communicated with each other and are simultaneously communicated with the sampling branch pipe (3).

3. A vacuum air bag sampling device according to claim 1 wherein: an annular flange (531) is integrally arranged on the outer wall of the metal end pipe (53), and a baffle ring (551) of the connecting sleeve (55) is arranged between the second rubber ring (54) and the flange (531).

4. A vacuum air bag sampling device according to claim 1 wherein: and a filtering cotton core (532) is arranged inside the metal end pipe (53).

5. A vacuum air bag sampling device according to claim 1 wherein: the outer wall of the connecting sleeve (55) is provided with a plurality of ribs (553), the ribs (553) are uniformly arranged along the circumferential direction of the outer wall of the connecting sleeve (55), and the length direction of the ribs (553) is the same as the central line direction of the connecting sleeve (55).

6. A vacuum air bag sampling device according to claim 2 wherein: a partition plate (11) is arranged in the sampling box (1), and the sampling box (1) is divided into an upper layer and a lower layer by the partition plate (11); the sampling branch pipe (3) and the air supply branch pipe (23) are arranged above the partition plate (11), and the air bag (4) is arranged below the partition plate (11); the opening of sampling box (1) articulates there is chamber door (12), is provided with door hasp (121) on chamber door (12), is provided with on sampling box (1) and takes the hasp seat (122) with door hasp (121) matched with.

7. A vacuum air bag sampling device according to claim 6 wherein: the partition plate (11) is provided with an accommodating groove (111), the accommodating groove (111) penetrates through the upper surface and the lower surface of the partition plate (11), and the accommodating groove (111) is communicated with the edge, close to the opening, of the partition plate (11); the end part of the accommodating groove (111) positioned in the partition plate (11) is provided with a round hole (112).

8. A vacuum air bag sampling device according to claim 6 wherein: an observation window (123) is formed in the box door (12), and the observation window (123) corresponds to the lower layer of the sampling box (1).