Collecting device for air pollution control

Abstract

The invention discloses a collecting device for air pollution abatement, which comprises a sampling cylinder and a support frame, the support frame comprises a base and a support rod, a lifting mechanism is arranged in the base, a rain-shielding top plate is arranged at the top of the support rod, a connecting cylinder sleeve is also arranged in the support rod, the sampling cylinder is detachably fixed below the rain-shielding top plate through the connecting cylinder sleeve, and the sampling cylinder is detachably fixed below the rain-shielding top plate through the connecting cylinder sleeve. A sampling opening is formed in the bottom of the sampling cylinder, a sealing plug is arranged at the sampling opening, and the sealing plug is fixedly connected with the lifting mechanism; a piston is arranged in the sampling cylinder and fixedly connected with a piston rod, and the top of the piston rod can abut against and be in contact connection with the bottom surface of the rain shielding top plate; a detection opening is formed in a cylinder body of the sampling cylinder, and a sealing strip is arranged at the detection opening. By adopting the collecting device, the problem that the sampling equipment is blocked by suspended particles can be effectively avoided, detection can be carried out at any time according to monitoring requirements, and the collecting device is simple in overall structure, convenient to operate and use and suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the technical field of air pollution control, in particular to a collection device for air pollution control. Background Art

[0002] As environmental issues receive more and more attention, atmospheric sampling becomes more and more important. It can accurately obtain data on various components in the atmosphere, provide key basis for air quality assessment, pollution prevention and control, and scientific research, and play an irreplaceable role in maintaining ecological balance. Atmospheric pollutants are generally caused by a mixture of gaseous substances, volatile substances, semi-volatile substances, and atmospheric particulate matter, and their components are often in dynamic change. Atmospheric pollutant detection equipment needs to perform real-time detection of pollutants of various components to achieve good monitoring and control. These tests rely on different types of online detection instruments. Different types of pollutants require the use of different detection instruments, such as air particle size detection equipment, volatile organic compound (VOCs) detection instruments, etc.

[0003] In order to control air pollution from different pollution sources, it is necessary to collect air samples for testing. According to the analysis of the test results, pollutants can be treated in a targeted manner. At present, the main method for atmospheric environmental monitoring is ground monitoring, which is carried out in the form of fixed stations or mobile detection equipment. There is no good monitoring technology for vertical high-altitude pollutants. At present, drones equipped with sensors have begun to be used for high-altitude monitoring, but the sensor accuracy is low and the monitoring factors are limited, and it is impossible to truly and comprehensively feedback the quality of polluted air. At the same time, the use of drones equipped with sensors for monitoring not only has high monitoring costs, but also has certain requirements for personnel and sites during use, resulting in a small scope of application and a low penetration rate.

[0004] Most fixed sampling devices now follow a timed sampling method, such as sampling every 4 hours (this time can be adjusted according to sampling needs, sampling locations and other factors). However, for sampling points with relatively stable atmospheric environments, this timed sampling method may lead to repeated sampling of gases, that is, the gas components detected subsequently are mostly similar, which unnecessarily increases the detection workload and lacks flexibility. Although the unnecessary detection workload can be reduced by extending the interval time, it may be impossible to detect atmospheric environmental changes in a timely manner due to the long interval time, affecting the assessment of atmospheric environmental quality, pollution prevention and control, etc. At the same time, the use of existing fixed sampling devices will cause suspended particles in the gas to block the air inlet when collecting gas. As the sampling time increases, the degree of blockage of the air inlet increases, which not only reduces the efficiency of obtaining samples, but also affects the accuracy of samples. After searching, the patent document with application publication number CN113607502A discloses a high-altitude pollutant sampling device for air pollution control, and the patent document with application publication number CN116183837A discloses an atmospheric multi-pollutant detection device. From the contents disclosed in the two retrieved patent documents, a detection device that meets the use requirements is provided from different angles. With the increase in the workload of environmental testing, in order to facilitate operation and avoid suspended particles in the atmosphere from clogging the air inlet of the sampling device in order to meet the testing requirements, a collection device different from the prior art is provided to improve work efficiency and expand its application scope. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a collection device with a simple structure and convenient operation in view of the problems existing in the background technology. The collection device can not only effectively prevent suspended particles in the atmosphere from blocking the air inlet of the sampling device, but also can be used for detection at any time according to monitoring needs, thereby improving the detection accuracy of samples. Thus, data support is provided for air quality assessment, pollution prevention and control, scientific research, etc., specifically, it is a collection device for air pollution control.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a collection device for air pollution control, including a sampling tube and a support frame, the support frame includes a base and a support rod, a lifting mechanism is arranged in the base, and a rain shield plate is arranged on the top of the support rod, and a connecting tube sleeve is also arranged in the support rod, the sampling tube is detachably fixed under the rain shield plate through the connecting tube sleeve, a sampling port is arranged at the bottom of the sampling tube, and a sealing plug is arranged at the sampling port, and the sealing plug is fixedly connected to the lifting mechanism; a piston is arranged in the sampling tube, and the piston is fixedly connected to a piston rod, and the top of the piston rod can be abutted and contacted with the bottom surface of the rain shield plate; a detection port is arranged on the body of the sampling tube, and a sealing strip is arranged at the detection port.

[0007] Furthermore, a collection device for air pollution control described in the present invention is adopted, and the lifting mechanism includes a driving motor, a threaded rod, a threaded sleeve, a connecting slider and a threaded disk. The driving motor is arranged in a base in a support frame, and a coupling is installed on the output shaft of the driving motor. The lower end of the threaded rod passes through the top of the base and is connected to the coupling, and the upper end thereof is rotatably connected to the rainproof roof plate; the threaded disk is fixed to the top of the threaded sleeve, and the threaded sleeve and the threaded disk are coaxially screwed on the threaded rod; the connecting slider is arranged on the outer side surface of the threaded sleeve, and a sliding groove matching the connecting slider is provided along the axial direction of the support rod in the support frame, and the other end of the connecting slider is arranged in the sliding groove in the support rod, and the threaded sleeve is slidably connected to the support rod through the connecting slider, and can move up and down along the threaded rod under the action of the driving motor; the sealing plug is fixed on the threaded disk in the lifting mechanism.

[0008] Furthermore, using the air pollution control collection device described in the present invention, an upper bearing matching the threaded rod is provided at the bottom center of the rain shelter top plate, and the threaded rod is rotatably connected to the rain shelter top plate through the upper bearing.

[0009] Furthermore, using the air pollution control collection device described in the present invention, the bottom of the rainproof roof is also provided with an automatic push rod corresponding to the piston rod, and the automatic push rod is selected from any one of a hydraulic rod, an electric push rod or a cylinder, and the piston rod can be connected to the automatic push rod in abutment with each other.

[0010] Furthermore, in the air pollution control collection device described in the present invention, two sampling tubes are provided, and the two sampling tubes are respectively connected to the support rod through corresponding connecting tube sleeves.

[0011] Furthermore, using the air pollution control collection device described in the present invention, the sealing strip is made of elastic material.

[0012] Furthermore, using the air pollution control collection device described in the present invention, the detection port is arranged on the side wall surface close to the bottom of the sampling tube.

[0013] Furthermore, using the air pollution control collection device described in the present invention, the base in the support frame is configured as a box structure with a cavity, and a lower bearing matching the threaded rod is provided at the top center of the base, and the threaded rod is rotatably connected to the base through the lower bearing.

[0014] Furthermore, the air pollution control collection device described in the present invention is used, and an equipment door is provided on the side wall of the base, and a universal wheel with a limiting function is installed on the bottom of the base.

[0015] Furthermore, using the air pollution control collection device described in the present invention, the support frame is provided with two groups of support rods, and the two groups of support rods are symmetrically fixed to the top of the base.

[0016] The use of a collection device for air pollution control described in the present invention has the following beneficial effects compared with the prior art: since a lifting mechanism is provided in the support frame, and the sampling tube is arranged in the support rod in the support frame, under the action of the lifting mechanism, the air in the external environment can be independently collected in the sampling tube, which can effectively avoid the problem of suspended particles in the atmosphere blocking the sampling device, and through the detection port on the lower side of the sampling tube, the existing conventional detection probe can be inserted into the sampling tube through the sealing strip and the detection port for detection, which can achieve the purpose of automatic detection without removing the sampling tube, so that the detection result can be more accurate, thereby providing data support for air quality assessment, pollution prevention and control, and scientific research. Without the need for detection, the sealing plug can be separated from the sampling tube by using the lifting mechanism. It can be seen from this that the use of the collection device described in the present invention, in conjunction with the existing conventional detection probe, can not only effectively avoid the problem of suspended particles blocking the sampling device, but also can be detected at any time according to monitoring needs, greatly improving work efficiency and reducing detection costs. By improving the detection accuracy of the sample, it can provide more accurate data support for air quality assessment, pollution prevention and control, and scientific research, etc., and its overall structure is simple, convenient to operate and use, and suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0018] Figure 1 is a schematic diagram of the structure of the collection device according to the second embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the collection device during sampling according to the second embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the collection device according to the second embodiment of the present invention when sampling is completed; Figure 4 This is a schematic diagram of the structure of the collection device during sampling according to the third embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the collection device described in the third embodiment of the present invention when sampling is completed.

[0019] As shown in the figure: 1-sampling cylinder, 11-sealing plug, 12-piston, 13-piston rod, 14-detection port, 15-sealing strip, 2-support frame, 21-base, 22-support rod, 23-equipment door, 24-universal wheel, 3-lifting mechanism, 31-drive motor, 32-threaded rod, 33-threaded sleeve, 34-connecting slider, 35-threaded disk, 36-coupling, 37-, 4-rainproof top plate, 41-placement tray, 42-protective cover shell, 5-connecting cylinder sleeve, 6-upper bearing, 7-lower bearing, 8-automatic push rod. DETAILED DESCRIPTION

[0020] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] It should be noted that the term "comprise" or any other variation is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus. Example 1

[0024] like Figures 1 to 3As shown, the present embodiment provides a collection device for air pollution control, including a sampling tube 1 and a support frame 2, the support frame 2 includes a base 21 and a support rod 22, the support rod 22 is provided with two groups, the two groups of support rods 22 are symmetrically fixed to the top of the base 21, a lifting mechanism 3 is arranged in the base 21, and a rainproof top plate 4 is arranged on the top of the support rod 22, a connecting tube sleeve 5 is also arranged in the support rod 22, the sampling tube 1 is detachably fixed under the rainproof top plate 4 through the connecting tube sleeve 5, a sampling port is arranged at the bottom of the sampling tube 1, and a sealing plug 11 is arranged at the sampling port, and the sealing plug 11 is fixedly connected to the lifting mechanism 3; a piston 12 is arranged in the sampling tube 1, and the piston 12 is fixedly connected to a piston rod 13, and the top of the piston rod 13 can be abutted and contacted with the bottom surface of the rainproof top plate 4; a detection port 14 is arranged on the body of the sampling tube 1, and a sealing strip 15 is arranged at the detection port 14. The lifting mechanism 3 includes a driving motor 31, a threaded rod 32, a threaded sleeve 33, a connecting slider 34 and a threaded disc 35. The driving motor 31 is arranged in the base 21 in the support frame 2. A coupling 36 is installed on the output shaft of the driving motor 31. The lower end of the threaded rod 32 passes through the top of the base 21 and is connected to the coupling 36, while the upper end thereof is rotatably connected to the rainproof roof plate 4. The threaded disc 35 is fixed to the top of the threaded sleeve 33. The threaded sleeve 33 and the threaded disc 35 are coaxially screwed together. On the threaded rod 32, the connecting slider 34 is arranged on the outer side of the threaded sleeve 33, and on the support rod 22 in the support frame 2, a sliding groove matching the connecting slider 34 is provided along its axial direction, and the other end of the connecting slider 34 is arranged in the sliding groove in the support rod 22. The threaded sleeve 33 is slidably connected to the support rod 22 through the connecting slider 34, and can move up and down along the threaded rod 32 under the action of the driving motor 31; the sealing plug 12 is fixed on the threaded disk 35 in the lifting mechanism.

[0025] Furthermore, in order to make the threaded rod 32 rotate more flexibly, the collection device described in this embodiment is used, and the center of the bottom of the rain shielding top plate 4 is provided with an upper bearing 6 that matches the threaded rod 32, and the threaded rod 3 is rotatably connected to the rain shielding top plate 4 through the upper bearing 6. The base 21 in the support frame 2 is configured as a box structure with a cavity, and a lower bearing 7 that matches the threaded rod 32 is provided at the center of the top of the base 21, and the threaded rod 3 is rotatably connected to the base 21 through the lower bearing 7.

[0026] Furthermore, in order to increase the sampling volume of the sampling tube 1 and realize the collection of multiple samples, the collection device described in this embodiment is adopted, and two sampling tubes 1 are provided. The two sampling tubes 1 are connected to the support rod 22 through corresponding connecting tube sleeves 5 respectively. Example 2

[0027] This embodiment is based on the embodiment 1. In order to facilitate the cooperation with the existing conventional detection probe, the collection device described in this embodiment is adopted. The material of the sealing strip 15 is elastic material, and the detection port 14 is arranged on the side wall surface close to the bottom of the sampling tube 1. At the same time, in order to facilitate the movement of the collection device and to repair the driving motor 31 installed in the base 21, an equipment door 23 is provided on the side wall of the base 21, and a universal wheel 24 with a limit function is installed at the bottom of the base 21. Example 3

[0028] like Figure 4 and Figure 5 As shown, this embodiment is based on the embodiment 2, in order to meet the sampling requirements of sampling tubes 1 at different heights, and to facilitate the discharge of the gas collected in the sampling tube 1. The collection device described in this embodiment is used, and an automatic push rod 8 corresponding to the piston rod 13 is also provided at the bottom of the rainproof top plate 4. The automatic push rod is selected from any one of a hydraulic rod, an electric push rod or a cylinder, and the piston rod can be connected to the automatic push rod by abutting contact. Since the hydraulic rod, electric push rod or cylinder are all commonly used equipment in the prior art, no detailed description is given, as long as the piston 12 connected to the piston rod 13 can be pushed to move in the sampling tube 1. Through the configured automatic push rod 8, the piston rod 13 is pushed downward by the automatic push rod 8, so that the piston 12 moves downward, thereby discharging the gas collected in the sampling tube 1, and secondary sampling is convenient.

[0029] Using the air pollution control collection device provided by the present invention, in a specific application process, such as Figure 1 As shown, the sampling tube 1 is installed in the support rod 22 in advance by connecting the tube sleeve 5, and the sealing plug 11 is located on the threaded disk 35 below the sampling port, and the sealing strip 15 is used to seal the detection port 14. When sampling, the driving motor 31 installed in the base 21 is started, and the threaded rod 32 is driven to rotate by the driving motor 31, so that the threaded sleeve 33 and the threaded disk 35 screwed in the threaded rod 32 are guided by the connecting slider 34, so that the threaded sleeve 33 and the threaded disk 35 move upward along the threaded rod 32, and synchronously drive the sealing plug 11 installed on the threaded disk 35 to move upward.

[0030] like Figure 2 As shown, when the sealing plug 11 is inserted into the sampling cylinder 1 from the sampling port at the bottom of the sampling cylinder 1, the atmosphere around the sampling cylinder 1 enters the sampling cylinder 1, as shown in FIG. Figure 3As shown, when the sealing plug 11 continues to move upward, the air collected in the sampling tube 1 pushes the piston 12 and the piston rod 13 to move upward, so that the piston rod 13 is in contact with the bottom surface of the rainproof top plate 4, and the air in the external environment is collected independently in the sampling tube 1. When re-sampling is required, the threaded rod 32 is rotated in the opposite direction, so that the threaded sleeve 33 and the threaded disk 35 screwed in the threaded rod 32 move downward, and finally the sealing plug 11 is separated from the sampling tube 1, and the piston rod 13 is pushed downward, so that the piston 12 moves down to the bottom in the sampling tube 1, so that the gas collected in the sampling tube 1 is discharged from the sampling port at the bottom of the sampling tube 1. When secondary sampling is required, the sealing strip 15 is first pasted on the detection port 14 to make the detection port 1 in a sealed state, and then the driving motor 31 is restarted, and the threaded rod 32 is driven by the driving motor 31 to rotate, so that the sealing plug 11 moves up and blocks in the sampling tube 1, that is, the secondary collection is completed.

[0031] When it is necessary to carry out detection, it is not necessary to remove the sampling tube 1 for detection. It is only necessary to extend the existing detection probe through the sealing strip 15 and the detection port 14 into the sampling tube 1 for detection. Under this operation mode, it can be avoided that the outside air enters the sampling tube 1 when the sampling tube 1 is removed, causing errors in the detection results. In addition, the sealing strip 15 is a disposable material. After completing a test, a new sealing strip 15 can be set at the detection port 14. In this way, the air to be detected can be collected independently in the sampling tube 1, making the detection result more accurate. At the same time, through the cooperation of the sealing plug 11 with the moving piston 12 and the piston rod 13, the problem of suspended particles blocking the sampling equipment can be effectively avoided.

[0032] It can be seen that, by using the collection device described in the present invention, since a lifting mechanism 3 is provided in the support frame 2, and the sampling tube 1 is arranged in the support rod 22 in the support frame 2, under the action of the lifting mechanism 3, the air in the external environment can be independently collected in the sampling tube 1, which can effectively avoid the problem of suspended particles in the atmosphere blocking the sampling device, and through the detection port 14 on the lower side of the sampling tube 1, the existing conventional detection probe can be inserted into the sampling tube 1 through the sealing strip 15 and the detection port 13 for detection, so that the purpose of automatic detection can be achieved without removing the sampling tube 1, which can make the detection result more accurate, thereby providing data support for air quality assessment, pollution prevention and control, and scientific research. Without the need for detection, the sealing plug 11 can be separated from the sampling tube 1 by using the lifting mechanism 3.

[0033] To sum up, the use of the collection device described in the present invention, in combination with the existing conventional detection probes, can not only effectively avoid the problem of suspended particles clogging the sampling equipment, but also can perform detection at any time according to monitoring needs, greatly improving work efficiency and reducing detection costs. By improving the detection accuracy of samples, it can provide more accurate data support for air quality assessment, pollution prevention and control, and scientific research. Its overall structure is simple, easy to operate and use, and is suitable for popularization and use.

[0034] Other aspects of the present invention that are not described in detail are all conventional techniques known to those skilled in the art.

[0035] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. The above description is only a preferred implementation method of the present invention and does not limit the present invention. Any minor modifications, equivalent substitutions and improvements made according to the technical solutions of the present invention should be included in the protection scope of the technical solutions of the present invention.

Claims

1. A collection device for air pollution control, comprising a sampling tube (1) and a support frame (2), characterized in that: The support frame (2) comprises a base (21) and a support rod (22); a lifting mechanism (3) is arranged in the base (21); a rainproof roof plate (4) is arranged on the top of the support rod (22); a connecting sleeve (5) is also arranged in the support rod (22); the sampling cylinder (1) is detachably fixed below the rainproof roof plate (4) via the connecting sleeve (5); a sampling port is arranged at the bottom of the sampling cylinder (1); a sealing plug (11) is arranged at the sampling port; the sealing plug (11) and the lifting mechanism (3) are fixedly connected; a piston (12) is arranged in the sampling cylinder (1); the piston (12) is fixedly connected to a piston rod (13); the top of the piston rod (13) can be in contact with the bottom surface of the rainproof roof plate (4); a detection port (14) is arranged on the body of the sampling cylinder (1); a sealing strip (15) is arranged at the detection port (14).

2. The air pollution control collection device according to claim 1, characterized in that: The lifting mechanism (3) comprises a driving motor (31), a threaded rod (32), a threaded sleeve (33), a connecting slider (34) and a threaded disc (35); the driving motor (31) is arranged in a base (21) in a support frame (2); a coupling (36) is installed on the output shaft of the driving motor (31); the lower end of the threaded rod (32) passes through the top of the base (21) and is connected to the coupling (36), while the upper end thereof is rotatably connected to the rainproof roof plate (4); the threaded disc (35) is fixed to the top of the threaded sleeve (33); the threaded sleeve (33) and the threaded disc (35) are coaxial. The connecting slider (34) is screwed onto the threaded rod (32), and the connecting slider (34) is arranged on the outer side surface of the threaded sleeve (33). A slide groove matching the connecting slider (34) is arranged along the axial direction of the support rod (22) in the support frame (2). The other end of the connecting slider (34) is arranged in the slide groove in the support rod (22). The threaded sleeve (33) is slidably connected to the support rod (22) through the connecting slider (34), and can move up and down along the threaded rod (32) under the action of the driving motor (31); the sealing plug (12) is fixed on the threaded disk (35) in the lifting mechanism.

3. The air pollution control collection device according to claim 1, characterized in that: An upper bearing (6) matching the threaded rod (32) is provided at the bottom center of the rain shielding top plate (4), and the threaded rod (3) is rotatably connected to the rain shielding top plate (4) via the upper bearing (6).

4. The air pollution control collection device according to claim 3, characterized in that: The bottom of the rainproof roof plate (4) is also provided with an automatic push rod (8) corresponding to the piston rod (13). The automatic push rod (8) is selected from any one of a hydraulic rod, an electric push rod or a cylinder. The piston rod (13) can be connected to the automatic push rod (8) by abutting contact.

5. The air pollution control collection device according to claim 1, characterized in that: Two sampling cylinders (1) are provided, and the two sampling cylinders (1) are respectively connected to the support rod (22) through corresponding connecting cylinder sleeves (5).

6. The air pollution control collection device according to claim 1, characterized in that: The sealing strip (15) is made of elastic material.

7. The air pollution control collection device according to claim 1, characterized in that: The detection port (14) is arranged on a side wall surface close to the bottom of the sampling cylinder (1).

8. The air pollution control collection device according to claim 1, characterized in that: The base (21) in the support frame (2) is configured as a box structure with a cavity, and a lower bearing (7) matching the threaded rod (32) is provided at the top center of the base (21), and the threaded rod (3) is rotatably connected to the base (21) via the lower bearing (7).

9. The air pollution control collection device according to claim 8, characterized in that: An equipment door (23) is provided on the side wall of the base (21), and a universal wheel (24) with a limiting function is installed at the bottom of the base (21).

10. The air pollution control collection device according to claim 9, characterized in that: The support frame (2) is provided with two groups of support rods (22), and the two groups of support rods (22) are symmetrically fixed to the top of the base (21).

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