CN221078201U

CN221078201U - Prevent atmospheric sampling ware of suck-back

Info

Publication number: CN221078201U
Application number: CN202323015664.9U
Authority: CN
Inventors: 王营; 张建强; 靳沿松; 王高超; 郭倩倩; 刘雪娇
Original assignee: Henan Kelong Environmental Engineering Co ltd
Current assignee: Henan Kelong Environmental Engineering Co ltd
Priority date: 2023-11-08
Filing date: 2023-11-08
Publication date: 2024-06-04
Anticipated expiration: 2033-11-08

Abstract

The utility model relates to the technical field of atmospheric sampling, and provides an anti-suck-back atmospheric sampler, which comprises a main casing, wherein an air inlet pipe is fixedly embedded at the top of the main casing, the top of the air inlet pipe is communicated with a one-way valve casing, the inner surface of the one-way valve casing is fixedly connected with a circulation plate, two valve rods are movably embedded in the circulation plate, the bottoms of the valve rods are fixedly connected with a sealing plate, one end of each valve rod, far away from the sealing plate, is fixedly connected with a force application plate, the outer surface of each valve rod is movably sleeved with a spring, the top of each spring is fixedly connected with the bottom of the force application plate, the bottom of each spring is fixedly connected with the top of the circulation plate, and four L-shaped rods are fixedly connected on the outer surface of the one-way valve casing. According to the utility model, the device is provided with the one-way through valve structure, so that the gas flow direction can be limited in the gas inlet stage, the condition that the gas in the device flows backwards is avoided, the reverse suction limitation is strong, the collected gas is pure, and the detection result is more accurate.

Description

Prevent atmospheric sampling ware of suck-back

Technical Field

The utility model relates to the technical field of atmospheric sampling, in particular to an anti-suck-back atmospheric sampler.

Background

In the conventional and emergency monitoring of gaseous substances and aerosols in environmental protection, sanitation, labor, security, military, scientific research, education and other departments, gas to be sampled often contains various harmful gases, and a common gas sampler in the market is adopted, so that the sampled sample is more representative, a sampler is required to pay a large labor intensity, take a long time to sample for a plurality of times, and the labor intensity of the sampler is reduced, and the sampler is greatly improved in the aspects of small portability, flow stability and the like.

But in the prior art, for example, chinese publication No.: CN215727127U, "a reverse suction prevention device for atmospheric sampling", the utility model discloses a reverse suction prevention device for atmospheric sampling, comprising a miniature water pump, a drain pipe, a water suction pipe, a water storage cylinder, a slide block, a water accumulation bucket, an auxiliary air duct, a main air duct, a drying oven, a first adjusting pipe, a drying agent particle layer, an air inlet pipe, a second adjusting pipe, a first pull rod, a second pull rod, a mounting cylinder, a short sealing column, a base plate, a clamping block, a telescopic rod, a clamping seat, a lower conductive block, a long sealing column, an upper conductive block and an air outlet pipe. According to the utility model, liquid is led into the water storage barrel through the air inlet pipe, so that the water storage barrel moves downwards under the action of gravity, the water storage barrel drives the upward conductive block to contact with the lower conductive block through the base plate and the clamping block, so that a circuit is connected, the miniature water pump is started, and the miniature water pump pumps out water in the water storage barrel through the water suction pipe and the water discharge pipe, thereby better collecting and timely discharging the liquid when the back suction occurs, and greatly prolonging the service life of the atmospheric sampler.

But this device does not set up one-way valve structure, can not just restrict the gas flow direction in the stage of admitting air, and the condition that the internal gas of device can appear flowing backwards, and the restriction of suck-back is weaker, and it is impure to gather gas, leads to the testing result inaccurate, and the device does not set up drainage method and collects gas structure, can exist impurity in the collection gas, and can not carry out quantitative collection to gas, is inconvenient for follow-up detection processing.

Disclosure of utility model

The utility model aims to solve the problems that in the prior art, a device is not provided with a one-way through valve structure, the flow direction of gas cannot be limited in an air inlet stage, the gas in the device possibly flows backwards, the reverse suction limitation is weaker, the collected gas is impure, the detection result is inaccurate, the device is not provided with a drainage method gas collecting structure, impurities possibly exist in the collected gas, quantitative collection cannot be carried out on the gas, and the follow-up detection processing is inconvenient.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an atmospheric sampling ware of preventing suck-back, includes the host casing, the top fixed of host casing is inlayed and is equipped with the intake pipe, the top intercommunication of intake pipe has the check valve casing, the internal surface fixedly connected with circulation board of check valve casing, the inside of circulation board all activity is inlayed and is equipped with two valve stems, the bottom fixedly connected with closing plate of valve stem, the one end fixedly connected with application of force board of closing plate is kept away from to the valve stem, the surface activity of valve stem has cup jointed the spring, the top fixedly connected with of spring is in the bottom of application of force board, the bottom fixedly connected with of spring is at the top of circulation board, the surface of check valve casing leans on four L shape poles of equal fixedly connected with, the top fixedly connected with shield of L shape pole, the bottom intercommunication of intake pipe has the air pump.

As a preferred implementation mode, the bottom of the air pump is fixedly connected to the bottom of the inner surface of the main machine shell, one side of the air pump is communicated with a through flow pipe, and one side, far away from the air pump, of the outer surface of the through flow pipe is fixedly sleeved with a bottle cap.

As a preferable implementation mode, the inner surface of the bottle cap is provided with a gas collecting bottle, and the bottom of the gas collecting bottle is fixedly connected to the bottom of the inner surface of the main machine shell.

As a preferred implementation mode, the inside activity of bottle lid is inlayed and is equipped with the U-shaped pipe, the outside surface of U-shaped pipe is kept away from the one side activity of bottle lid and is cup jointed the pipe box, the outside surface fixation of pipe box inlays the bottom of establishing at the mainframe housing and extends one end, the bottom of mainframe housing all fixedly connected with four landing legs.

As a preferred implementation mode, the top of U-shaped pipe rotates and is connected with the threaded rod, the surface threaded connection of threaded rod has the internal thread cover, the surface fixed embedding of internal thread cover is established at the top of host casing, the top fixedly connected with knob of internal thread cover.

As a preferred implementation mode, the inside of bottle lid is fixedly embedded with the switching pipe, the one side that the surface of switching pipe kept away from the bottle lid is fixedly embedded in one side of host computer shell, the valve has been cup jointed to the surface mounting of switching pipe, the one end fixedly connected with joint that the bottle lid was kept away from to the switching pipe.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. According to the utility model, the device is provided with the one-way through valve structure, so that the gas flow direction can be limited in the gas inlet stage, the condition that the gas in the device flows backwards is avoided, the reverse suction limitation is strong, the collected gas is pure, and the detection result is more accurate.

2. According to the utility model, the device is provided with the structure for collecting the gas by the drainage method, so that impurities in the collected gas are avoided, and the gas can be quantitatively collected, thereby facilitating subsequent detection treatment.

Drawings

Fig. 1 is a schematic perspective view of an anti-suck-back atmospheric sampler provided by the utility model;

FIG. 2 is a schematic diagram of the back structure of an anti-suck-back atmospheric sampler provided by the utility model;

FIG. 3 is a schematic cross-sectional view of an anti-suck-back atmospheric sampler according to the present utility model;

Fig. 4 is a schematic diagram of a disassembly structure of an air inlet pipe and a one-way valve casing of an anti-suck-back air sampler provided by the utility model;

Fig. 5 is a schematic cross-sectional view of a check valve housing in an anti-suck-back atmospheric sampler according to the present utility model.

Legend description:

1. A main housing; 2. an air inlet pipe; 3. a one-way valve housing; 4. a flow-through plate; 5. a valve stem; 6. a sealing plate; 7. a force application plate; 8. a spring; 9. an L-shaped rod; 10. a dust cover; 11. an air pump; 12. a flow tube; 13. a bottle cap; 14. a gas collecting bottle; 15. a U-shaped tube; 16. a pipe sleeve; 17. a threaded rod; 18. an internal thread sleeve; 19. a knob; 20. a transfer tube; 21. a valve; 22. a joint; 23. and (5) supporting legs.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled 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. 1-5, the present utility model provides a technical solution: the utility model provides an atmospheric sampling ware of preventing suck-back, including main casing 1, the top fixed inlay of main casing 1 is equipped with intake pipe 2, the top intercommunication of intake pipe 2 has check valve casing 3, the internal surface fixedly connected with circulation board 4 of check valve casing 3, the inside of circulation board 4 all activity inlay and be equipped with two valve rods 5, the bottom fixedly connected with closing plate 6 of valve rod 5, the one end fixedly connected with application of force board 7 of closing plate 6 is kept away from to valve rod 5, the spring 8 has been cup jointed in the surface activity of valve rod 5, the top fixedly connected with of spring 8 is in the bottom of application of force board 7, the bottom fixedly connected with of spring 8 is at the top of circulation board 4, the surface of check valve casing 3 leans on equal fixedly connected with four L shape poles 9, the top fixedly connected with shield 10 of L shape pole 9, the bottom intercommunication of intake pipe 2 has air pump 11, can be under the effect of atmospheric pressure when the circulation board 4 in the gas passes through check valve casing 3, the spring 8 between compression application of force board 7 and the circulation board 4, let closing plate 6 and valve rod 5 simultaneously move downwards, the hole that will produce from closing plate 6 and circulation board 4 gets into 2 and air pump 11.

As shown in fig. 1-5, the bottom of the air pump 11 is fixedly connected to the bottom of the inner surface of the main casing 1, one side of the air pump 11 is communicated with a through-flow pipe 12, one side, far away from the air pump 11, of the outer surface of the through-flow pipe 12 is fixedly sleeved with a bottle cap 13, and gas pressurized by the air pump 11 enters the gas collecting bottle 14 through the through-flow pipe 12.

As shown in fig. 1-5, the inner surface of the bottle cap 13 is provided with a gas collecting bottle 14, the bottom of the gas collecting bottle 14 is fixedly connected to the bottom of the inner surface of the main machine shell 1, and the gas collecting bottle 14 is used for collecting sampling gas.

As shown in fig. 1-5, a U-shaped tube 15 is movably embedded in the bottle cap 13, a tube sleeve 16 is movably sleeved on one side, far away from the bottle cap 13, of the outer surface of the U-shaped tube 15, the outer surface of the tube sleeve 16 is fixedly embedded in the bottom of the main machine shell 1 and extends out of one end, four supporting legs 23 are fixedly connected to the bottom of the main machine shell 1, moisture, which is away from the liquid surface, at one end of the U-shaped tube 15 is discharged from the device through the tube sleeve 16, and the supporting legs 23 at the bottom of the main machine shell 1 facilitate the discharge of the moisture.

As shown in fig. 1-5, the top of the U-shaped tube 15 is rotatably connected with a threaded rod 17, the outer surface of the threaded rod 17 is in threaded connection with an internal thread sleeve 18, the outer surface of the internal thread sleeve 18 is fixedly embedded in the top of the main machine shell 1, the top of the internal thread sleeve 18 is fixedly connected with a knob 19, the threaded rod 17 is rotated in the internal thread sleeve 18 by rotating the knob 19, and the U-shaped tube 15 can move up and down in the bottle cap 13 and the pipe sleeve 16 under the action of the rotating threads at the same time, so that the distance between one end of the U-shaped tube 15 and the liquid level is adjusted.

As shown in fig. 1-5, a transfer tube 20 is fixedly embedded in the bottle cap 13, one side, far away from the bottle cap 13, of the outer surface of the transfer tube 20 is fixedly embedded in one side of the main machine shell 1, a valve 21 is fixedly sleeved on the outer surface of the transfer tube 20, a connector 22 is fixedly connected to one end, far away from the bottle cap 13, of the transfer tube 20, and gas inside the gas collection bottle 14 can be extracted by the connector 22 and the transfer tube 20, and water can be injected into the gas collection bottle 14.

Working principle: firstly, a valve 21 is opened, a gas collection bottle 14 in the main machine shell 1 is connected with an external water pipe through a connector 22 and an adapter pipe 20, the gas collection bottle 14 is filled with water through the water pipe, then a rotary knob 19 rotates a threaded rod 17 in an inner threaded sleeve 18, a U-shaped pipe 15 can move up and down in the bottle cap 13 and the pipe sleeve 16 simultaneously under the action of rotary threads, the distance between one end of the U-shaped pipe 15 and the liquid level is adjusted, and after the adjustment is finished, the model of an air pump 11 of the air pump 11 in the main machine shell 1 is started: XGB-120W; under the acting of the air pump 11, air can enter the one-way valve housing 3 through the dust cover 10 and the L-shaped rod 9, the dust cover 10 plays a role in preventing dust from entering the device, the spring 8 between the force application plate 7 and the flow plate 4 is compressed under the action of atmospheric pressure when the air passes through the flow plate 4 in the one-way valve housing 3, the sealing plate 6 and the valve rod 5 move downwards simultaneously, the air can enter the air inlet pipe 2 and the air pump 11 from the holes generated between the sealing plate 6 and the flow plate 4, the air flow direction can be limited in an air inlet stage, the condition that the air in the device flows backwards is avoided, the reverse suction limitation is stronger, the collected air is pure, the detection result is more accurate, the air after being pressurized by the air pump 11 enters the air collection cylinder 14 through the flow pipe 12, the moisture at one end of the U-shaped pipe 15 is discharged from the liquid surface through the pipe sleeve 16 into the device, the water is conveniently discharged through the supporting leg 23 at the bottom of the main machine housing 1, the air can be quantitatively collected, the follow-up detection treatment is facilitated, and the air in the air suction detection can be carried out in the air collection cylinder 14 through the connection of the joint 22.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The utility model provides an atmospheric sampling ware of preventing suck-back, its characterized in that, including mainframe shell (1), the top fixed inlay of mainframe shell (1) is equipped with intake pipe (2), the top intercommunication of intake pipe (2) has check valve casing (3), the internal surface fixedly connected with circulation board (4) of check valve casing (3), the inside of circulation board (4) all activity inlays and is equipped with two valve rods (5), the bottom fixedly connected with closing plate (6) of valve rod (5), the one end fixedly connected with application of force board (7) of closing plate (6) are kept away from to valve rod (5), the surface activity of valve rod (5) has cup jointed spring (8), the top fixedly connected with of spring (8) is in the bottom of application of force board (7), the bottom fixedly connected with of spring (8) is at the top of circulation board (4), the surface of check valve casing (3) leans on equal fixedly connected with four L shape poles (9), the top fixedly connected with shield (10) of L shape pole (9), the bottom intercommunication of intake pipe (2) has air pump (11).

2. The anti-suck-back atmospheric sampler of claim 1 wherein: the bottom of air pump (11) is fixedly connected in the interior surface bottom of mainframe housing (1), one side of air pump (11) is linked together and is had warp flow pipe (12), the surface of warp flow pipe (12) is kept away from the fixed bottle lid (13) that has cup jointed in one side of air pump (11).

3. The anti-suck-back atmospheric sampler of claim 2 wherein: the inner surface of the bottle cap (13) is provided with a gas collecting bottle (14), and the bottom of the gas collecting bottle (14) is fixedly connected to the bottom of the inner surface of the main machine shell (1).

4. A suck-back prevention atmospheric sampler as defined in claim 3 wherein: the inside activity of bottle lid (13) is inlayed and is equipped with U-shaped pipe (15), the one side activity that the bottle lid (13) was kept away from to the surface of U-shaped pipe (15) has cup jointed pipe box (16), the surface fixation of pipe box (16) inlays the bottom of establishing in mainframe housing (1) and extends one end, the bottom of mainframe housing (1) is all fixedly connected with four landing legs (23).

5. The anti-suck-back atmospheric sampler of claim 4 wherein: the top rotation of U-shaped pipe (15) is connected with threaded rod (17), the surface threaded connection of threaded rod (17) has internal thread cover (18), the surface fixed embedding of internal thread cover (18) is established at the top of mainframe housing (1), the top fixedly connected with knob (19) of internal thread cover (18).

6. The anti-suck-back atmospheric sampler of claim 4 wherein: the inside of bottle lid (13) is fixed to be inlayed and is equipped with transfer pipe (20), one side that the bottle lid (13) was kept away from to the surface of transfer pipe (20) is fixed to be inlayed and is established in one side of host computer shell (1), the surface mounting of transfer pipe (20) has cup jointed valve (21), the one end fixedly connected with joint (22) that bottle lid (13) was kept away from to transfer pipe (20).