Atmospheric pollutant collecting device

Abstract

The utility model discloses an atmospheric pollutant collecting device, which relates to the technical field of air sampling and comprises a barrel and a rubber tube, a piston is slidably arranged in the barrel, one end of the piston is connected with a push rod used for pushing the piston to move in the barrel, a gas tube is arranged on the barrel on one side of the piston far away from the push rod, and a connecting device is arranged on the gas tube. The connecting device is provided with a valve device, the valve device is used for adjusting the communication state of the gas pipe and the barrel body, the valve device comprises a moving rod arranged on the connecting device, one end of the moving rod sequentially moves and penetrates through the supporting strip and a spring, and one end of the spring is connected with the sealing plug and used for pulling the sealing plug to return to the original position. And meanwhile, the communication stability is improved, gas inlet and outlet work can be completed through one set of gas pipes, communication is completed when the threaded sleeve is connected, and closing is completed when the threaded sleeve is detached.

Description

Technical Field

[0001] The utility model relates to the technical field of air sampling, in particular to an atmospheric pollutant collection device. Background Art

[0002] Due to pollutant emissions from human activities such as petrochemicals, metal smelting, and waste incineration, the atmospheric environment in different regions has been affected to some extent. In areas with a high concentration of factories, atmospheric pollution has become the culprit affecting public health, thus attracting widespread attention. Testing the atmospheric environment and making objective evaluations have also become issues of public concern. When sampling atmospheric pollutants, if the concentration of the measured component in the atmosphere is high or the analytical method is very sensitive, a direct sampling method is used. Commonly used sampling containers include syringes, plastic bags, and some fixed containers. The measured concentration is the instantaneous concentration of the pollutant in the atmosphere or the average concentration over a short period of time. When the concentration of the measured component in the atmosphere is low, a concentrated sampling method is used, including solution absorption, column packing, low-temperature condensation, and filter sampling. This method measures the average concentration of the pollutant in the atmosphere during the sampling time.

[0003] In the prior art, a utility model patent with announcement number CN211085853U provides an atmospheric pollutant collection device, including a cylinder and a piston, the piston is connected to a push rod, two gas pipes are connected to the side wall of the cylinder, and gas plugs are slidably installed in the gas pipes. The gas plugs include two sealing plugs for sealing the gas pipes and a connecting rod connecting the sealing plugs. The diameter of the connecting rod is smaller than the diameter of the gas pipe, and a limiting plate is fixedly provided on the inner wall of the gas pipe.

[0004] The air pollutant collection device has two independent pipes, the air inlet pipe and the air outlet pipe, each of which is equipped with a gas plug inside, which increases the product cost and weight. When the rubber tube is not connected, the cylinder can still be exhausted. Therefore, we propose an air pollutant collection device to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an atmospheric pollutant collection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an atmospheric pollutant collection device, comprising a cylinder and a rubber tube, a piston slidingly provided in the cylinder, one end of the piston being connected to a push rod for pushing the piston to move in the cylinder, a gas pipe being provided on the cylinder on the side of the piston away from the push rod, a connecting device being provided on the gas pipe, a valve device being provided on the connecting device, the valve device being used to adjust the connection state between the gas pipe and the cylinder, the valve device comprising a moving rod provided on the connecting device, one end of the moving rod moving in sequence through the support bar and the spring, one end of the spring being connected to a sealing plug for pulling the sealing plug back to its original position, the sealing plug sliding in the gas pipe and used to seal one end of the gas pipe, a limiting rod being provided on the end face of the sealing plug connected to the spring for limiting the swing of the sealing plug.

[0007] Preferably, the connecting device is used to connect the rubber tube and the gas tube.

[0008] Preferably, the connecting device includes a threaded sleeve with one end rotatably sleeved with a rubber tube, the threaded sleeve is threadedly connected to the gas tube, and a limiting strip for limiting the rubber tube from contacting the gas tube is provided inside the threaded sleeve.

[0009] Preferably, one end of the moving rod is fixed on the limiting bar, and the supporting bar is fixed on the inner wall of the gas pipe.

[0010] Preferably, the length of the moving rod is greater than the length of the gas tube.

[0011] Preferably, the width of the support strip is smaller than the inner diameter of the gas pipe.

[0012] Preferably, the spring is a tension spring, the free end of the spring is connected to the support bar, and the material of the sealing plug is the same as that of the piston.

[0013] Preferably, the telescopic length of the spring is greater than the difference in length between the moving rod and the gas tube, one end of the limiting rod moves through the support bar, and the length of the limiting rod is greater than the telescopic length of the spring.

[0014] Preferably, the internal thread of the threaded sleeve matches the thread on the outer wall of the gas pipe.

[0015] Preferably, the width of the limiting strip is less than or equal to the width of the supporting strip.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. During the threaded connection between the gas pipe and the threaded sleeve, as the sleeve rotates, it gradually approaches the side of the gas pipe's connecting barrel. This movement causes the simultaneous displacement of the limit bar, which then gently presses and adheres to one end of the gas pipe. This not only prevents further movement of the threaded sleeve, but also cleverly creates a protective barrier, effectively preventing reverse rotation and disengagement caused by accidental contact with the sleeve, thereby simplifying the connection process between the gas pipe and rubber hose and improving the stability of the connection.

[0018] 2. When the threaded sleeve is successfully connected to the gas pipe, a chain reaction occurs immediately: the moving rod moves forward along with the movement of the limit bar, and its driving force causes the sealing plug to slowly slide into the interior of the cylinder. During this process, the spring is gradually stretched to adapt to the displacement of the sealing plug. When the sealing plug is completely located in the cylinder, it indicates that an unobstructed passage has been established between the cylinder and the gas pipe. Conversely, when the threaded sleeve needs to be removed, the moving rod moves in the opposite direction, and the previously stretched spring quickly returns to its original shape, driving the sealing plug back to its original position, re-closing the gas pipe, and effectively preventing the leakage of gas in the cylinder. This design ingeniously realizes the function of both gas input and gas output through a single gas pipe, that is, the channel is opened when connected and automatically closed when disassembled, ensuring the convenience and safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a structural diagram of the valve device in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the connecting device in the utility model.

[0022] In the figure: 1. Cylinder; 2. Push rod; 3. Piston; 4. Gas pipe; 5. Connecting device; 51. Threaded sleeve; 52. Limiting strip; 6. Rubber tube; 7. Valve device; 71. Moving rod; 72. Supporting bar; 73. Spring; 74. Sealing plug; 75. Limiting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-3, a device for collecting atmospheric pollutants includes a cylinder 1 and a rubber tube 6. A piston 3 is slidably provided in the cylinder 1, and the piston 3 is interference fit with the inner wall of the cylinder 1. One end of the piston 3 is connected to a push rod 2 for pushing the piston 3 to move in the cylinder 1. A gas pipe 4 is provided on the cylinder 1 on the side of the piston 3 away from the push rod 2. A connecting device 5 is provided on the gas pipe 4. The connecting device 5 is used to connect the rubber tube 6 and the gas pipe 4. The free end of the rubber tube 6 is connected to a container for collecting gas or a container for storing gas. The connecting device 5 includes a threaded sleeve 51 (similar to the connection method between an air nail gun and an air pipe) that is rotatably sleeved on the rubber tube 6 at one end. The threaded sleeve 51 is threadedly connected to the gas pipe 4. A limiting strip 52 is provided in the threaded sleeve 51 for limiting the rubber tube 6 from contacting the gas pipe 4. The internal thread of the threaded sleeve 51 is matched with the thread on the outer wall of the gas pipe 4, and the width of the limiting strip 52 is less than or equal to the width of the support strip 72.

[0025] The threaded sleeve 51 is rotated to threadably connect to the gas pipe 4, and the threaded sleeve 51 is rotated to move toward the side of the gas pipe 4 connected to the cylinder 1. The movement of the threaded sleeve 51 causes the limiting bar 52 to move accordingly. The limiting bar 52 moves to squeeze and contact one end of the gas pipe 4, limiting the threaded sleeve 51 from continuing to move. At the same time, the limiting bar 52 is squeezed and contacted with the gas pipe 4 to prevent accidental contact with the threaded sleeve 51 to cause reversal and separation, thereby facilitating the connection between the gas pipe 4 and the rubber tube 6 and improving the stability of the connection.

[0026] The connecting device 5 is provided with a valve device 7, which is used to adjust the communication state between the gas pipe 4 and the cylinder 1. The valve device 7 includes a moving rod 71 provided on the connecting device 5. One end of the moving rod 71 moves in sequence through the support bar 72 and the spring 73. One end of the spring 73 is connected to a sealing plug 74 for pulling the sealing plug 74 back to its original position. The sealing plug 74 slides in the gas pipe 4 and is used to move and block the opening at one end of the gas pipe 4. The end surface of the sealing plug 74 connected to the spring 73 is provided with a limit rod 7 for limiting the swing of the sealing plug 74. 5. One end of the moving rod 71 is fixed on the limiting bar 52. The length of the moving rod 71 is greater than the length of the gas tube 4. The support bar 72 is fixed on the inner wall of the gas tube 4. The width of the support bar 72 is smaller than the inner diameter of the gas tube 4. The spring 73 is a tension spring. The free end of the spring 73 is connected to the support bar 72. The sealing plug 74 is made of the same material as the piston 3. The extension length of the spring 73 is greater than the length difference between the moving rod 71 and the gas tube 4. One end of the limiting rod 75 moves through the support bar 72. The length of the limiting rod 75 is greater than the extension length of the spring 73.

[0027] When the threaded sleeve 51 is connected to the gas pipe 4, the moving rod 71 moves with the limit bar 52, and the moving rod 71 moves to push the sealing plug 74 into the cylinder 1, and the sealing plug 74 moves to stretch the spring 73. When the sealing plug 74 moves into the cylinder 1, the cylinder 1 and the gas pipe 4 are in a connected state. When the threaded sleeve 51 is removed, the moving rod 71 moves in the opposite direction, and the spring 73 returns to its original state to pull the sealing plug 74 back to its original position, re-blocking the gas pipe 4 and limiting the outflow of gas in the cylinder 1, so that the air inlet and outlet can be completed through a group of gas pipes. The connection is completed when the threaded sleeve 51 is connected, and the closure is completed when the threaded sleeve 51 is removed.

[0028] When gas needs to be extracted, the rubber tube 6 is sealed connected to the container for collecting gas, and the push rod 2 is pulled to move the piston 3, so that the pressure inside the cylinder 1 is reduced, and the gas extraction work is completed through the gas tube 4, the threaded sleeve 51 and the rubber tube 6; the rubber tube 6 is sealed connected to the container for storing gas, and the push rod 2 is pushed to move the piston 3 toward the side of the gas tube 4, so that the pressure inside the cylinder 1 is increased, and the gas is discharged into the container for storing gas.

[0029] The working principle of this utility model:

[0030] The core design of this utility model cleverly combines the essence of mechanical transmission and sealing technology, aiming to achieve high efficiency, stability and convenience in gas pipeline connection. Specifically, its working principle is as follows:

[0031] First, the meticulously designed threaded sleeve 51 utilizes a precise threaded connection with the gas pipe 4, ensuring a tight and reliable connection. When the operator rotates the threaded sleeve 51, this rotational motion is translated into linear movement of the sleeve axially toward the side of the gas pipe 4 connected to the cylinder 1. During this process, the interlocking action of the threads not only provides strong connection force but also ensures a gradually deeper and more secure connection.

[0032] As the threaded sleeve 51 continues to move, its built-in limit bar 52 also moves synchronously. The ingenious design of the limit bar 52 lies in its ability to precisely squeeze and contact one end of the gas tube 4. This contact not only limits further movement of the threaded sleeve 51 and prevents damage caused by overtightening, but more importantly, it forms a physical barrier, effectively preventing connection reversal or separation caused by accidental contact with the threaded sleeve 51, thereby greatly improving the safety and stability of the connection.

[0033] At the same time, the tight squeeze between the limit strip 52 and the gas pipe 4 also cleverly achieves another important function - preventing gas leakage. This dual-protection design makes the gas flow through the pipe smoother and also lays a solid foundation for subsequent sealing operations.

[0034] Next, when the threaded sleeve 51 is successfully connected to the gas pipe 4, a chain reaction is triggered: the moving rod 71 follows the moving trajectory of the limit bar 52 and begins to advance into the cylinder 1. During this process, the end of the moving rod 71 is connected to the sealing plug 74. As the moving rod 71 pushes, the sealing plug 74 gradually penetrates into the cylinder 1, while stretching the spring 73 connected to it. The elastic potential energy of the spring 73 is gradually accumulated in this process, providing power reserve for the subsequent reset operation.

[0035] When the sealing plug 74 is fully inserted into the cylinder 1 and tightly fits against the corresponding sealing surface, the passage between the cylinder 1 and the gas pipe 4 is officially opened. At this point, gas can flow freely between the two components, achieving a highly efficient connection. This design not only simplifies the operation process but also improves the efficiency and stability of gas transmission.

[0036] When the threaded sleeve 51 needs to be removed, as the threaded sleeve 51 gradually loosens and moves outward, the movable rod 71 also moves in the opposite direction. At this time, the previously stretched spring 73 begins to play its role, using its stored elastic potential energy to quickly restore its original state and pull the sealing plug 74 to quickly return to its initial position. This reset action is quick and accurate, and effectively re-seals the gas pipe 4, thereby limiting the outflow of gas in the cylinder 1 and ensuring the safety and stability of the system.

[0037] In summary, through a series of ingenious designs and innovations, the utility model realizes the automation, efficiency and stabilization of gas pipeline connection and disconnection. Whether it is the tightness and safety during the connection process or the speed and accuracy during the disconnection process, it shows good performance and broad application prospects.

[0038] The structures and working principles of the cylinder 1, piston 3 and push rod 2 are all prior art and will not be described in detail here.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An atmospheric pollutant collection device, comprising a cylinder (1) and a rubber tube (6), wherein a piston (3) is slidably provided in the cylinder (1), and one end of the piston (3) is connected to a push rod (2) for pushing the piston (3) to move in the cylinder (1), characterized in that: A gas pipe (4) is provided on the cylinder (1) on the side of the piston (3) away from the push rod (2), and a connecting device (5) is provided on the gas pipe (4). The connecting device (5) is provided with a valve device (7), and the valve device (7) is used to adjust the communication state between the gas pipe (4) and the cylinder (1). The valve device (7) includes a moving rod (71) provided on the connecting device (5), one end of the moving rod (71) moves through the support bar (72) and the spring (73) in sequence, and one end of the spring (73) is connected to the sealing plug (74) for pulling the sealing plug (74) to return to its original position. The sealing plug (74) slides in the gas pipe (4) and is used to seal one end of the gas pipe (4). A limiting rod (75) for limiting the swing of the sealing plug (74) is provided on the end surface of the sealing plug (74) connected to the spring (73).

2. The air pollutant collection device according to claim 1, characterized in that: The connecting device (5) is used to connect the rubber tube (6) and the gas tube (4).

3. The air pollutant collection device according to claim 2, characterized in that: The connecting device (5) comprises a threaded sleeve (51) having one end rotatably sleeved on a rubber tube (6), the threaded sleeve (51) being threadably connected to a gas tube (4), and a limiting strip (52) for limiting the rubber tube (6) from contacting the gas tube (4) being provided inside the threaded sleeve (51).

4. The air pollutant collection device according to claim 1, characterized in that: One end of the moving rod (71) is fixed on the limiting bar (52), and the supporting bar (72) is fixed on the inner wall of the gas pipe (4).

5. The air pollutant collection device according to claim 1, characterized in that: The length of the moving rod (71) is greater than the length of the gas pipe (4).

6. The atmospheric pollutant collection device according to claim 1, characterized in that: The width of the support bar (72) is smaller than the inner diameter of the gas pipe (4).

7. The air pollutant collection device according to claim 1, characterized in that: The spring (73) is a tension spring, the free end of the spring (73) is connected to the support bar (72), and the material of the sealing plug (74) is the same as that of the piston (3).

8. The air pollutant collection device according to claim 1, characterized in that: The telescopic length of the spring (73) is greater than the difference in length between the moving rod (71) and the gas tube (4); one end of the limiting rod (75) moves through the support bar (72); and the length of the limiting rod (75) is greater than the telescopic length of the spring (73).

9. The air pollutant collection device according to claim 3, characterized in that: The internal threads of the threaded sleeve (51) are matched with the threads on the outer wall of the gas pipe (4).

10. The air pollutant collection device according to claim 3, characterized in that: The width of the limiting strip (52) is less than or equal to the width of the supporting strip (72).

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