CN219142393U

CN219142393U - Air collection device

Info

Publication number: CN219142393U
Application number: CN202320821470.9U
Authority: CN
Inventors: 张志杰; 冯德达; 代斌
Original assignee: Jiachuang Environmental Protection Technology Co ltd
Current assignee: Jiachuang Environmental Protection Technology Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-06-06
Anticipated expiration: 2033-04-14

Abstract

The utility model provides an air collection system, relates to sampling device technical field, including the sampling case, the rigid coupling has an air outlet section of thick bamboo on the sampling case, detachably is connected with the gas cylinder on the air outlet section of thick bamboo, and the gas cylinder sliding is equipped with the valve plate, and the one end rigid coupling of gas cylinder has the connecting cylinder of its inner chamber of intercommunication, still slides in the connecting cylinder and is equipped with the movable valve that seals the connecting cylinder, and the back of movable valve is equipped with supporting spring, before gathering, the valve plate is close to the connecting cylinder. The utility model solves the problem that the device in the prior art is easy to remain gas in the gas collection bottle when sampling air, so that the deviation of the sampled air sample is large.

Description

Air collection device

Technical Field

The utility model relates to the technical field of sampling devices, in particular to an air collection device.

Background

The air quality detection is to detect whether the air quality is good or bad. The quality of air reflects the concentration of pollutants in the air, the air pollution is a complex phenomenon, the concentration of the pollutants in the air is influenced by a plurality of factors at specific time and place, and the quality of the air is detected at the present stage, and air collection equipment is required to collect and store the air and analyze the air in a laboratory.

The utility model discloses a patent of publication number CN217980930U among the prior art, this scheme includes the device main part, device main part top sets up the closure lid, and the closure lid top surface sets up micro-fan, and micro-fan output connects the sliding sleeve that sets up in the closure lid bottom surface, and the inboard slip of sliding sleeve connects the pipe, and the closure lid bottom is connected a barrel, and a barrel inboard sets up the guide slot, and the opening in a barrel outside is set up in guide slot one side connection, and the guide slot inboard is connected the deflector roll, and the deflector roll top surface sets up the gas receiving pipe that runs through self.

The prior art, including the above patents, has also gradually revealed the disadvantages of this technology with use, mainly in the following aspects:

first, current air collection system is when sampling the air, easily remains gas in the gas collection bottle for the air sample deviation after the sampling is big.

Second, current air collection system is when picking the gas collection bottle after accomplishing the collection, can make other air enter into in the collection bottle, and the sample influences greatly.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model solves the problems that the device in the prior art is easy to remain gas in the gas collection bottle when sampling the air, so that the deviation of the sampled air sample is large; and when the existing air collection device is used for picking the collected air collection bottle, other air can enter the collection bottle, and the sample is greatly influenced.

In order to solve the problems, the utility model provides the following technical scheme:

the air collection device comprises a sampling box, an air outlet cylinder is fixedly connected to the sampling box, an air collecting cylinder is detachably connected to the air outlet cylinder, a valve plate is slidably arranged in the air collecting cylinder, a connecting cylinder communicated with the inner cavity of the air collecting cylinder is fixedly connected to one end of the air collecting cylinder, a movable valve for sealing the connecting cylinder is further slidably arranged in the connecting cylinder, a supporting spring is arranged on the back face of the movable valve, and the valve plate is close to the connecting cylinder before collection.

As an optimized scheme, the inner wall of the connecting cylinder, which is close to the inlet end, is provided with an internal thread, and the connecting cylinder is connected to the air outlet cylinder through the internal thread.

As an optimized scheme, the back of the movable valve is fixedly connected with a guide cylinder, and the supporting spring is sleeved in the guide cylinder.

As an optimized scheme, a baffle ring is fixedly connected in the connecting cylinder, and in a normal state, the front surface of the movable valve is propped against the baffle ring and seals the inlet end of the connecting cylinder.

As an optimized scheme, the other end of the gas collecting bottle is provided with a breathing hole communicated with the inner cavity of the gas collecting bottle, and the breathing Kong Nasai is provided with a plug.

As an optimized scheme, an air pump communicated with the air outlet cylinder is fixedly connected in the sampling box.

As an optimized scheme, a dust filtering device is fixedly connected in the sampling box, the inlet end of the dust filtering device extends to the outside of the sampling box through an air inlet pipe, and the outlet end of the dust filtering device is connected with the air inlet of the air pump through an air outlet pipe.

As an optimized scheme, the air outlet cylinder is connected with an air flow meter.

As an optimized scheme, a support is fixedly connected to the outer wall of the sampling box, and the gas collection bottle is supported on the support.

As an optimized scheme, the air inlet pipe is connected with an air collecting hose.

Compared with the prior art, the utility model has the beneficial effects that:

the air collecting hose opening is placed in an area where air needs to be collected, the air pump is started, the function of collecting air in different areas is achieved, the air enters the dust filtering device through the air collecting hose and the air inlet pipe, the filtered air is discharged after passing through the air outlet pipe, the air pump, the air flowmeter and the air outlet barrel, the air flowmeter can display the volume of discharged air of the device, when the volume of the discharged air is larger than that of a front-end ventilation pipeline, all original air in the device is discharged at the moment, the accurate function of collecting sample air is achieved, and sample deviation is reduced;

the connecting cylinder is connected to the air outlet cylinder by utilizing the internal thread, the air bottle body is supported by the support, the air bottle body is connected with the air outlet cylinder by clockwise rotation, the pressure on the left side of the movable valve is higher than the pressure on the right side of the movable valve, the movable valve compresses and supports the spring to move rightwards, the movable valve is far away from the baffle ring, gas enters the air bottle through a gap between the baffle ring and the movable valve, the valve plate moves rightwards along the air bottle until moving to the rightmost end of the air bottle under the pushing of the gas, the air pump is closed at the moment, the movable valve moves leftwards until contacting with the baffle ring under the action of the supporting spring, a gas sample is completely sealed in the air bottle, the problem that the sample pollution is caused by the mixing of the gas in the air bottle and the external gas in the picking process is solved, the air bottle is separated from the air bottle anticlockwise rotation, and the air outlet cylinder is completely collected.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic structural view of the gas collecting bottle of the present utility model.

In the figure: 1-sampling box; 2-an air outlet cylinder; 3-an air flow meter; 4-gas collection bottle; 5-connecting cylinder; 6-supporting seats; 7-an air pump; 8-a dust filtering device; 9, an air inlet pipe; 10-an air outlet pipe; 11-a gas production hose; 12-a valve plate; 13-a movable valve; 14-a baffle ring; 15-a guide cylinder; 16-a support spring; 17-internal threads; 18-breathing holes; 19-plug.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

As shown in fig. 1 and 2, the air collection device comprises a sampling box 1, an air outlet cylinder 2 is fixedly connected on the sampling box 1, an air collecting cylinder 4 is detachably connected on the air outlet cylinder 2, a valve plate 12 is slidably arranged in the air collecting cylinder 4, a connecting cylinder 5 communicated with an inner cavity of the air collecting cylinder 4 is fixedly connected at one end of the air collecting cylinder 4, a movable valve 13 for sealing the connecting cylinder 5 is slidably arranged in the connecting cylinder 5, a supporting spring 16 is arranged at the back of the movable valve 13, and the valve plate 12 is close to the connecting cylinder 5 before collection.

The inner wall of the connecting cylinder 5 near the inlet end is provided with an internal thread 17, and is connected to the air outlet cylinder 2 through the internal thread 17.

The back of the movable valve 13 is fixedly connected with a guide cylinder 15, and a supporting spring 16 is sleeved in the guide cylinder 15.

A baffle ring 14 is fixedly connected in the connecting cylinder 5, and in a normal state, the front surface of the movable valve 13 is propped against the baffle ring 14 and seals the inlet end of the connecting cylinder 5.

The other end of the gas collection bottle 4 is provided with the breathing hole 18 communicated with the inner cavity of the gas collection bottle, the breathing hole 18 is internally plugged with the plug 19, when the valve plate 12 is pushed to the left side, the inner cavity of the gas collection bottle is closed by the plug 19, foreign matters are prevented from entering the gas collection bottle 4 from the breathing hole 18, the valve plate 12 is prevented from sliding and blocking, the breathing hole 18 is arranged, and the valve plate 12 can be pushed to reset by the rod body.

Wherein, when the air of the air collection bottle 4 is discharged, the movable valve 13 is only required to be pressed inwards.

An air pump 7 communicated with the air outlet tube 2 is fixedly connected in the sampling box 1.

The sampling box 1 is also fixedly connected with a dust filtering device 8, the inlet end of the dust filtering device 8 extends to the outside of the sampling box 1 through an air inlet pipe 9, and the outlet end of the dust filtering device 8 is connected with the air inlet of the air pump 7 through an air outlet pipe 10.

The structure of the dust filtering device 8 is common in daily life, and is not an innovation of the scheme, so that a detailed description is omitted here.

The air outlet cylinder 2 is connected with an air flow meter 3.

The outer wall of the sampling box 1 is fixedly connected with a support 6, and the gas collecting bottle 4 is supported on the support 6.

The air intake pipe 9 is connected with an air intake hose 11.

The working principle of the device is as follows:

the mouth of the air collection hose 11 is placed in a region where air needs to be collected, the air pump 7 is started, the function of collecting air in different regions is realized, the air enters the dust filtering device 8 through the air collection hose 11 and the air inlet pipe 9, the filtered air is discharged after passing through the air outlet pipe 10, the air pump 7, the air flowmeter 3 and the air outlet pipe 2, the air flowmeter 3 can display the volume of the discharged air of the device, when the volume of the discharged air is larger than the volume of a ventilation pipeline at the front end, all original air in the device is discharged at the moment, the accurate function of collecting sample air is realized, and the sample deviation is reduced;

the connecting cylinder 5 is connected to the air outlet cylinder 2 by utilizing the internal thread 17, the cylinder body of the air cylinder 4 is supported by the support 6, the air cylinder 4 is connected with the air outlet cylinder 2 by rotating the air cylinder 4 clockwise, the air pump 7 works, the pressure on the left side of the movable valve 13 is larger than the pressure on the right side of the movable valve 13, the movable valve 13 compresses the supporting spring 16 to move rightwards, the movable valve 13 is far away from the baffle ring 14, gas enters the air cylinder 4 through a gap between the baffle ring 14 and the movable valve 13, under the pushing of the gas, the valve plate 12 moves rightwards along the air cylinder 4 until moving to the rightmost end of the air cylinder 4, the air pump 7 is closed at the moment, the movable valve 13 moves leftwards under the action of the supporting spring 16 until contacting with the baffle ring 14, a gas sample is completely sealed in the air cylinder 4, the problem that the gas in the air cylinder 4 mixes with external gas to cause sample pollution in the picking process is solved, the air cylinder 4 is separated from the air outlet cylinder 2 anticlockwise, and sample collection is completed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. Air collection system, its characterized in that: including sampling case (1), the rigid coupling has air outlet cylinder (2) on sampling case (1), detachable connection has gas cylinder (4) on air outlet cylinder (2), it is equipped with valve plate (12) to slide in gas cylinder (4), the one end rigid coupling of gas cylinder (4) has connecting cylinder (5) of its inner chamber of intercommunication, still slide in connecting cylinder (5) and be equipped with and seal movable valve (13) of connecting cylinder (5), the back of movable valve (13) is equipped with supporting spring (16), before gathering, valve plate (12) are close to connecting cylinder (5).

2. The air collection assembly of claim 1, wherein: an inner thread (17) is arranged on the inner wall of the connecting cylinder (5) close to the inlet end, and the connecting cylinder is connected to the air outlet cylinder (2) through the inner thread (17) in a threaded mode.

3. The air collection assembly of claim 2, wherein: the back of the movable valve (13) is fixedly connected with a guide cylinder (15), and the support spring (16) is sleeved in the guide cylinder (15).

4. An air collection assembly according to claim 3, wherein: a baffle ring (14) is fixedly connected in the connecting cylinder (5), and in a normal state, the front surface of the movable valve (13) is propped against the baffle ring (14) and seals the inlet end of the connecting cylinder (5).

5. The air collection assembly of claim 4, wherein: the other end of the gas collecting bottle (4) is provided with a breathing hole (18) communicated with the inner cavity of the gas collecting bottle, and a plug (19) is plugged in the breathing hole (18).

6. The air collection assembly of claim 5, wherein: an air pump (7) communicated with the air outlet cylinder (2) is fixedly connected in the sampling box (1).

7. The air collection assembly of claim 6, wherein: still the rigid coupling has dust filter equipment (8) in sampling case (1), the entrance point of dust filter equipment (8) extends to sampling case (1) outside through intake pipe (9), the exit end of dust filter equipment (8) is connected with the air inlet of air pump (7) through outlet duct (10).

8. The air collection assembly of claim 7, wherein: the air outlet cylinder (2) is connected with an air flow meter (3).

9. The air collection assembly of claim 8, wherein: the outer wall of the sampling box (1) is fixedly connected with a support (6), and the gas collecting bottle (4) is supported on the support (6).

10. The air collection assembly of claim 9, wherein: the air inlet pipe (9) is connected with an air collecting hose (11).