Vacuum box air bag sampler

Abstract

The utility model provides a vacuum box air bag sampler, and relates to the field of air samplers. The air bag sampler for the vacuum box comprises a sampling box, a sampling pipe and a sampling pipe, wherein an air bag is arranged in the sampling box; the collecting mechanism comprises a collecting head, and the collecting head is arranged outside the sampling box and is communicated with the air bag pipeline; the sampling box is provided with a sampling head, the adjusting mechanism is fixedly connected with the sampling box through a fixing piece, the threaded rod is rotationally connected with the fixing piece, one end of the telescopic piece is in threaded connection with the threaded rod through a sliding block clamped in the fixing piece, and the other end of the telescopic piece is connected with the sampling head; according to the air bag sampler, the adjusting mechanism is arranged to drive the collecting head to move up and down, so that the collecting head can move to different heights relative to the ground, air at different heights can be sampled, and the problems that a vacuum box air bag sampler in the prior art is single in sampling and cannot accurately reflect the real air quality condition of an area are solved.

Description

Technical Field

[0001] The utility model relates to the field of air samplers, in particular to a vacuum box air bag sampler. Background Art

[0002] The vacuum air bag sampler is a commonly used gas sampling device. Its principle is to reduce the pressure inside the air bag through a reversible vacuum pump or vacuum guide, inhale external gas, and seal the gas in the bag in the air bag for analysis and detection.

[0003] Vacuum air bag samplers are often used for air sampling, and particulate matter and pollutants in the air usually show stratification. In the atmosphere, different gases and particles form vertical layers according to their density, size and chemical properties. In some areas, due to factors such as climate and altitude, the stratification phenomenon in the air will be more serious, resulting in a large concentration gradient of particulate matter and pollutants in the air near the ground.

[0004] However, the current vacuum box air bag sampler only samples at one height during sampling, and the sample is single, which makes it unable to accurately reflect the actual air quality conditions in the area, affecting the authenticity and effectiveness of the test results. Utility Model Content

[0005] The utility model provides a vacuum box air bag sampler that takes samples from different heights to solve the problem in the prior art that the vacuum box air bag sampler only takes samples at one height and the sample is single, which makes it unable to accurately reflect the real air quality conditions in the area and affects the authenticity and validity of the test results.

[0006] The technical solution adopted by the utility model is:

[0007] A vacuum box air bag sampler, comprising:

[0008] A sampling box, with an air bag inside;

[0009] A collection mechanism, comprising a collection head, the collection head is arranged outside the sampling box and is connected to the air bag pipeline; and

[0010] An adjusting mechanism, fixedly connected to the sampling box via a fixing member;

[0011] Wherein, the regulating mechanism at least further comprises:

[0012] a threaded rod rotatably connected to the fixing member; and

[0013] A telescopic member, one end of which is threadedly connected to the threaded rod through a slider engaged in the fixing member, and the other end of which is connected to the collecting head, can drive the collecting head to rise and fall.

[0014] Furthermore, the fixing member is engaged in a sliding groove provided in the fixing member.

[0015] Furthermore, the collecting head and the telescopic member are detachably connected.

[0016] Furthermore, the collecting head and the telescopic member are connected by bonding.

[0017] Furthermore, one of the collection heads is connected to the plurality of air bag pipelines through a plurality of connecting pipes, and valves are provided on the connecting pipes.

[0018] Furthermore, a telescopic hose is connected between one of the collection heads and the plurality of connecting tubes.

[0019] Furthermore, one end of the threaded rod is connected to an output end of a motor.

[0020] Furthermore, a control component is provided outside the sampling box, and the control component is electrically connected to the sampling box and the motor; after the control component controls the motor to move once, the sampling box performs a collection.

[0021] Furthermore, the valve is a solenoid valve, and the control component is electrically connected to the valve; the control component controls the motor to open the designated valve each time it moves, and then the sampling box performs a collection.

[0022] The beneficial effects of the utility model are:

[0023] 1. The utility model provides an adjustment mechanism, which includes a fixed part and a telescopic part, and the telescopic part drives the collection head to move up and down, so that the collection head can be moved to different heights relative to the ground, thereby realizing the sampling of air at different heights, and solving the problem in the prior art that the vacuum box air bag sampler only samples at one height and the sample is single, resulting in it being unable to accurately reflect the actual air quality conditions in the area, affecting the authenticity and validity of the test results.

[0024] 2. The utility model realizes the separate collection of gas samples at different heights by setting up an air box, connecting the collection head and multiple connecting tubes and multiple air bags, and can obtain detection results at different heights for comparative analysis, thereby improving the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional schematic diagram of an air bag sampler according to an embodiment of the utility model.

[0027] Figure 2 This is a schematic diagram of the internal structure of the air bag sampler according to an embodiment of the utility model.

[0028] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0029] Figure 4 This is a schematic diagram of the circuit structure of the air bag sampler according to the second embodiment of the utility model.

[0030] Reference numerals:

[0031] 100-collection box, 110-base, 130-control component, 140-air bag, 150-pressure gauge;

[0032] 200 - collection mechanism, 210 - connecting pipe, 220 - valve, 230 - gas box, 240 - telescopic hose, 250 - collection head;

[0033] 300-adjusting mechanism, 310-fixing part, 320-telescopic part, 330-sliding groove, 340-sliding block, 350-motor, 360-threaded rod. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention.

[0036] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0037] See also Figure 1-3 This embodiment provides a vacuum box air bag sampler, which mainly includes: a collection box 100, a collection mechanism 200 and an adjustment mechanism 300, etc.

[0038] The collection box 100 is used to generate a low pressure or vacuum environment, and through the pressure difference, the external air is sucked into the air bag 140 inside the collection box 100, and then the air bag 140 is closed to complete the collection of air samples. Figure 1 , Figure 2 As shown in , the collection box 100 is in the shape of a horizontal rectangular parallelepiped, with a base 110 fixedly disposed at the bottom thereof, and four rollers disposed below the base 110 for easy movement. A control assembly 130 is mounted on the upper surface of the base 110, and the control assembly 130 is also fixedly connected to the outside of the right side wall of the collection box 100, and is electrically connected to the collection box 100 to control the pressure inside the collection box 100 and the opening and closing of the air bag 140. At the same time, a pressure gauge 150 is also mounted on the outside of the right side wall of the collection box 100 and above the control assembly 130 to monitor the pressure inside the collection box 100.

[0039] like Figure 1 , Figure 2 As shown in the figure, the collection mechanism 200 is arranged on the top of the collection box 100, serving as the air inlet channel of the air bag 140, connecting the inside and outside of the collection box 100. The collection mechanism 200 is mainly composed of a connecting pipe 210, a telescopic hose 240 and a collection head 250 which are connected in sequence. Among them, the connecting pipe 210 is embedded on the top wall of the collection box 100 and passes through the top wall. The end of the connecting pipe 210 extending into the collection box 100 is connected to the air bag 140, and the end of the connecting pipe 210 extending outside the collection box 100 is connected to the telescopic hose 240. The telescopic hose 240 is mainly used to facilitate the up and down movement of the collection mechanism 200 to avoid excessive stretching of the pipeline, which may cause damage and leakage of the collection mechanism 200. The collection head 250 is connected to the other end of the telescopic hose 240, and its air inlet is open to facilitate air to enter the pipeline.

[0040] like Figure 1-Figure 3As shown in , the adjustment mechanism 300 is arranged on the upper surface of the base 110 of the sampling box 100, and mainly includes a fixing part 310 and a telescopic part 320, etc. Among them, the fixing part 310 is a shell with a roughly rectangular shape, and a motor 350 is fixedly arranged at the center position of the bottom wall thereof, the output end of the motor 350 faces upward, and is fixedly connected to a threaded rod 360, the threaded rod 360 is vertically arranged, and a rectangular slider 340 is sleeved on the threaded rod 360, and the threaded rod 360 is threadedly connected to the slider 340. In addition, the slider 340 is also engaged in the slide groove 330 arranged on the left and right side walls of the fixing part 310, and the slide groove 330 is symmetrically arranged on both sides and arranged in the vertical direction, so when the threaded rod 360 rotates, the slider 340 can move up and down in the slide groove 330. The telescopic member 320 is also a roughly rectangular parallelepiped shell, which can be movably inserted into the rectangular opening on the top wall of the fixed member 310, and the lower end of the telescopic member 320 is fixedly connected to the upper surface of the slider 340, so that the telescopic member 320 can move up and down relative to the fixed member 310. At the same time, the adjustment mechanism 300 is fixedly connected to the upper surface of the base 110 of the sampling box 100 through the lower end of the fixed member 310, and is adhesively connected to the collection head 250 through the upper end side wall of the telescopic member 320. Therefore, the adjustment mechanism 300 can control the up and down movement of the telescopic member 320 relative to the fixed member 310 through the motor 350, so that the collection head 250 can move to different heights relative to the base 110 placed on the ground, thereby realizing the sampling of air at different heights.

[0041] In this embodiment, the vacuum box air bag sampler is provided with an adjustment mechanism 300, which includes a fixing part 310 and a telescopic part 320, and the telescopic part 320 drives the collecting head 250 to move up and down, so that the collecting head 250 can be moved to different heights relative to the ground, thereby realizing the sampling of air at different heights, and solving the problem that the vacuum box air bag sampler in the prior art only samples at one height and the sample is single, resulting in the inability to accurately reflect the actual air quality conditions in the area, affecting the authenticity and validity of the test results.

[0042] At the same time, in this embodiment, the collection head 250 can be removed from the upper side wall of the telescopic member 320 by bonding the upper side wall of the telescopic member 320 with the collection head 250, and then the telescopic hose 240 can be placed in a suitable position due to its flexibility, so that the collection head 250 can be properly stored when not in use, and can be repaired and cleaned. However, it should be pointed out that the collection head 250 and the telescopic member 320 can also be connected by plug-in connection, slotted connection, etc., and the same effect can be achieved by only making a detachable connection between the two.

[0043] In this embodiment, although the above-mentioned improvements have achieved average sampling at various heights, the samples collected at each height are mixed together and cannot reflect the changes in the concentration gradient of particulate matter and pollutants in the air near the ground. There is only the detection value of the average data, which cannot be used for further detailed analysis and research on air quality. As a result, the vacuum box air bag sampler in this embodiment is still insufficient in practicality. In order to further solve these problems on the basis of the above-mentioned improvements and improve the practicality of the vacuum box air bag sampler, this embodiment also makes the following preferred improvements to the collection box 100 and the collection mechanism 200.

[0044] Preferably, in this embodiment, if Figure 1 , Figure 2 As shown in , the number of air bags 140 in the collection box 100 is mainly set to three, which are not connected to each other. At the same time, the collection mechanism 200 also sets three connecting pipes 210, which are connected to the three air bags 140 respectively, and each connecting pipe 210 is also provided with a valve 220. In addition, the collection mechanism 200 is also provided with a rectangular air box 230 at the position where the connecting pipe 210 and the telescopic hose 240 are connected to each other. The air box 230 allows the three connecting pipes 210 to be connected to a telescopic hose at the same time. In this way, the gas at different heights can be selectively introduced into different air bags 140 by opening and closing the valve 220, so that the gas samples at different heights can be collected separately, thereby improving the practicality of the vacuum box air bag sampler of this embodiment. It should be pointed out that in this embodiment, the number of air bags 140 and connecting pipes 210 can also be set to four, five, etc. as needed to measure more data at different heights.

[0045] A specific implementation of this embodiment is as follows: first, the collection head 250 on the collection mechanism 200 is bonded to the installation position of the upper end side wall of the telescopic member 320, and then the motor 350 is operated to move the collection head 250 to a suitable height through the adjustment mechanism 300, and then the valve 220 on the corresponding connecting pipe 210 is opened, and the control component 130 of the collection box 100 is started to reduce the air pressure in the collection box 100, open the air bag 140, and start gas collection. When it is necessary to change the height and take the next set of samples, the control component 130 is first paused, the air bag 140 is closed, and then the valve 220 on the previously used connecting pipe 210 is closed, and then the motor 350 is operated to move the collection head 250 to the next required height through the adjustment mechanism 300, and the valve 220 on the next set of connecting pipes 210 is opened, and then the control component 130 is started again, the air bag is opened, and the next set of sampling is started. Repeating the above steps can complete the sampling of air at different heights, and enhance the authenticity, effectiveness and practicality of the sampling analysis results.

[0046] However, it can be seen from this exemplary specific implementation that in the above embodiment, the user needs to operate the control component 130 and the motor 350 back and forth, while controlling the opening and closing of the valve 220. The operation process is very cumbersome, time-consuming and labor-intensive. Sometimes two or three people may be required to operate together, which increases the manpower burden. As a result, the vacuum box air bag sampler in the above embodiment still has the problems of inconvenient operation and less than ideal efficiency. In order to further solve these problems on the basis of the first embodiment, a second embodiment is provided below.

[0047] See also Figure 4 In the second embodiment, the motor 350 and the valve 220 are mainly electrically connected to the control component 130 to form an automated fixed operation sequence, reduce the manpower burden, and reduce the complexity of the work.

[0048] like Figure 4 As shown in , the valves 220 on each connecting pipe 210 are solenoid valves, and are electrically connected to the control component 130 and controlled by the control component 130; the motor 350 can be directly controlled, and is also electrically connected to the control component 130 and controlled by the control component 130. Specifically, the control component 130 controls the motor 350 to move once, that is, the collection head 250 of the collection mechanism 200 moves to a specified position; the control component 130 then controls the valve 220 on the specified connecting pipe 210 to open, that is, the collection head 250 and the specified air bag 140 in the collection box 100 are connected; then the control component 130 controls the sampling box 100 to reduce the internal air pressure and open the air bag 140 for a collection. When in use, the user only needs to set the required sampling heights and then start the control component. The use process is very convenient, which greatly simplifies the tediousness of the work and reduces manpower consumption.

[0049] In addition, as in the first embodiment, when it is not necessary to sample the air at different heights separately, but to collect mixed samples and take the average value, a modified method can be adopted in the second embodiment, that is, the electrical connection between the valve 220 and the control component 130 is removed, and the control component 130 is only electrically connected to the sampling box 100 and the motor 350. Specifically, after the control component 130 controls the motor 350 to move once, that is, after the collection head 250 of the collection mechanism 200 moves to a specified position; the control component 130 controls the sampling box 100 to reduce the internal air pressure and open the air bag 140 to collect once. This modified method can also achieve the effect of simplifying operation and saving manpower.

[0050] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vacuum box air bag sampler, characterized in that: Include: A sampling box (100) having an air bag (140) disposed therein; A collection mechanism (200) comprising a collection head (250), wherein the collection head (250) is arranged outside the sampling box (100) and is in communication with a pipeline of the air bag (140); and An adjustment mechanism (300) fixedly connected to the sampling box (100) via a fixing member (310); Wherein, the regulating mechanism (300) at least further comprises: a threaded rod (360) rotatably connected to the fixing member (310); and A telescopic member (320) has one end threadably connected to the threaded rod (360) via a slider (340) engaged in the fixing member (310), and the other end connected to the collecting head (250), and can drive the collecting head (250) to rise and fall.

2. The vacuum box air bag sampler according to claim 1, characterized in that: The fixing member (310) is engaged in a sliding groove (330) provided in the fixing member (310).

3. The vacuum box air bag sampler according to claim 1, characterized in that: The collection head (250) and the telescopic member (320) are detachably connected.

4. The vacuum box air bag sampler as claimed in claim 3, characterized in that: The collection head (250) and the telescopic member (320) are connected by bonding.

5. The vacuum box air bag sampler according to claim 1, characterized in that: One of the collection heads (250) is connected to the pipelines of the plurality of air bags (140) through a plurality of connecting pipes (210), and a valve (220) is provided on the connecting pipe (210).

6. The vacuum box air bag sampler according to claim 5, characterized in that: A telescopic hose (240) is also connected between one of the collection heads (250) and the plurality of connection tubes (210).

7. The vacuum box air bag sampler according to claim 5, characterized in that: One end of the threaded rod (360) is connected to an output end of a motor (350).

8. The vacuum box air bag sampler according to claim 7, characterized in that: A control component (130) is arranged outside the sampling box (100), and the control component (130) is electrically connected to the sampling box (100) and the motor (350); each time the control component (130) controls the motor (350) to move once, the sampling box (100) performs a collection.

9. The vacuum box air bag sampler according to claim 8, characterized in that: The valve (220) is a solenoid valve, and the control component (130) is electrically connected to the valve (220); the control component (130) controls the motor (350) to open the designated valve (220) each time it moves, and then the sampling box (100) performs a collection.

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