Air sampling device for environmental pollution monitoring

Abstract

The utility model provides an air sampling device for environmental pollution monitoring, which comprises a collecting box, an exhaust fan is mounted on one side of the collecting box, a filter screen is mounted on the other side of the collecting box, a plurality of through holes are distributed at the bottom end of the collecting box between the exhaust fan and the filter screen, and connecting pipes are mounted at the bottom end of the collecting box below the through holes. A sampling bag is detachably mounted below the connecting pipe, a mounting pipe is arranged at the upper end of the sampling bag, a sealing assembly is mounted in the mounting pipe, electric push rods are mounted at the top end of the collecting box above the through holes, and ejector rods are mounted at the output ends of the electric push rods in the collecting box. Flow of air in the collecting box is accelerated through the exhaust fan, meanwhile, the electric push rod is used for pushing the sealing plate in the sealing assembly, the sealing plate relieves sealing of the mounting pipe, and the air enters the sampling bag through the mounting pipe, so that air sampling is achieved, air sampling at various heights is facilitated, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental pollution monitoring, in particular to an air sampling device for environmental pollution monitoring. Background Art

[0002] The monitoring of atmospheric environmental pollution is the process of observing the types and concentrations of pollutants in the atmospheric environment, analyzing their changes and measuring their impact on the environment. During the atmospheric environmental monitoring process, island air sampling devices are required to sample the ambient air.

[0003] In the prior art, the patent with application number CN202123348913.7 records an air sampling device for atmospheric environmental pollution monitoring, which includes a temporary storage container and a handle, and also includes a sampling mechanism and a collecting mechanism. Two groups of handles are symmetrically installed on the top of the temporary storage container surface, and a sampling mechanism is arranged inside the temporary storage container. The bottom of the right side surface of the temporary storage container is installed with a collecting mechanism. The sampling mechanism includes a first limit rod, a first piston, a first push-pull rod, a sampling head and a first plug. Two groups of first limit rods are symmetrically installed on the inner wall of the temporary storage container, and the surfaces of the two groups of the first limit rods are slidably installed with first pistons. The above device still has some shortcomings when used, such as the device requires manual operation by the staff, which is not convenient for sampling air at a certain height. At the same time, when the sampled air is taken out, it is easy to mix with the external air, affecting the authenticity of the sampled air inspection data. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an air sampling device for environmental pollution monitoring, which is convenient for sampling air at various altitudes and avoids leakage of the sampled air.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] An air sampling device for environmental pollution monitoring comprises a collection box, an exhaust fan is installed on one side of the collection box, a filter is installed on the other side of the collection box, a plurality of through holes are arranged at the bottom end of the collection box between the exhaust fan and the filter, a connecting pipe is installed at the bottom end of the collection box below the through holes, a sampling bag is detachably installed below the connecting pipe, a mounting pipe is provided at the upper end of the sampling bag, a sealing assembly is installed inside the mounting pipe, an electric push rod is installed at the top end of the collection box above the through hole, and a push rod is installed at the output end of the electric push rod inside the collection box.

[0007] Furthermore, a thread groove is arranged on the surface of the connecting pipe, and the mounting pipe is threadedly connected to the inside of the connecting pipe.

[0008] Furthermore, the sealing assembly includes a sealing plate, a movable rod, an elastic spring, a connecting plate and a sealing gasket. The movable rods are installed on both sides of the upper end of the mounting tube through mounting holes, the connecting plate is installed on the upper end of the movable rod, and an elastic spring is installed on the surface of the movable rod between the lower end of the connecting plate and the upper end of the connecting tube. A sealing plate is commonly installed at the lower ends of the two movable rods, and a sealing gasket is laid on the upper end of the sealing plate.

[0009] Furthermore, a box body is installed on the side of the collection box, a controller and a power supply are installed inside the box body, and a control panel is installed on one side of the box body.

[0010] Furthermore, support frames are installed on both sides of the lower end of the collection box, and a lifting frame is provided on the upper end of the collection box.

[0011] Furthermore, a discharge pipe is installed at the bottom end of the sampling bag, and a valve is provided on the discharge pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The air sampling device for environmental pollution monitoring of the present application accelerates the flow of air inside the collection box by using an exhaust fan, and at the same time uses an electric push rod to push the sealing plate in the sealing assembly, so that the sealing plate releases the seal on the mounting tube, and the air enters the sampling bag through the mounting tube, thereby realizing air sampling, which is convenient for air sampling at various heights;

[0014] 2. This application sets a sealing component. After the ambient air sampling is completed, the sealing plate seals the bottom of the installation tube under the action of the elastic force recovery of the elastic spring, thereby sealing the sampling bag and preventing the air from leaking after sampling;

[0015] 3. The present application installs a discharge pipe on the sampling bag and uses a valve to control the on / off of the discharge pipe, thereby facilitating the discharge of sampled air from the inside of the sampling bag and effectively preventing the sampled air from mixing with external air when it is taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a front cross-sectional view of the utility model;

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0019] In the figure: 1. collection box; 2. exhaust fan; 3. through hole; 4. connecting pipe; 5. sampling bag; 6. mounting pipe; 8. electric push rod; 9. push rod; 10. box body; 11. control board; 12. support frame; 13. lifting frame; 14. discharge pipe; 15. valve; 16. filter; 701. sealing plate; 702. moving rod; 703. elastic spring; 704. connecting plate; 705. sealing gasket. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1-3 As shown, an air sampling device for environmental pollution monitoring of the present embodiment comprises a collection box 1, and an exhaust fan 2 is installed on one side of the collection box 1. The exhaust fan 2 is used to accelerate the circulation of air inside the collection box 1, effectively improving the air collection efficiency; a filter screen 16 is installed on the other side of the collection box 1, and the filter screen 16 is used to filter floating objects in the air to avoid affecting the rotation of the exhaust fan 2; a plurality of through holes 3 are arranged at the bottom end of the collection box 1 between the exhaust fan 2 and the filter screen 16, and a connecting pipe 4 is installed at the bottom end of the collection box 1 below the through holes 3, and a sampling bag 5 is detachably installed below the connecting pipe 4, and the sampling bag 5 is connected to the connecting pipe 4, and the sampling bag 5 is preferably made of a soft material. , the air inside the sampling bag 5 can be evacuated to avoid other air residue; a mounting tube 6 is provided at the upper end of the sampling bag 5, and the mounting tube 6 is connected to the connecting tube 4 to realize the disassembly of the sampling bag 5; a sealing assembly is installed inside the mounting tube 6, and the sealing assembly is used to seal the mounting tube 6, so as to facilitate the automatic sealing of the sampling bag 5 after the air is collected, so as to avoid leakage of the sampled air; an electric push rod 8 is installed at the top of the collection box 1 above the through hole 3, and the output end of the electric push rod 8 is located inside the collection box 1 and a push rod 9 is installed, which is driven to move by the extension of the electric push rod 8, and the push rod 9 can push the sealing assembly, so as to facilitate the air to enter the sampling bag 5 through the mounting tube 6.

[0022] Specifically, thread grooves are arranged on the surface of the connecting pipe 4, and the mounting pipe 6 is threadedly connected inside the connecting pipe 4, and the mounting pipe 6 is connected to the connecting pipe 4 by threaded connection.

[0023] Furthermore, the sealing assembly includes a sealing plate 701, a moving rod 702, an elastic spring 703, a connecting plate 704 and a sealing gasket 705. The moving rods 702 are installed on both sides of the upper end of the mounting tube 6 through the mounting holes, the connecting plate 704 is installed on the upper end of the moving rod 702, and an elastic spring 703 is installed on the surface of the moving rod 702 between the lower end of the connecting plate 704 and the upper end of the connecting tube 4. The lower ends of the two moving rods 702 are jointly installed with a sealing plate 701, and the upper end of the sealing plate 701 is laid with a sealing gasket 705; when in use, the elastic spring 703 is in a compressed state, and the sealing plate 701 is lifted up through the connecting plate 704 and the moving rod 702 under the action of the elastic force of the elastic spring 703, the sealing plate 701 seals the lower end of the mounting tube 6, and the sealing gasket 705 increases the sealing performance of the connection between the sealing plate 701 and the mounting tube 6, thereby realizing automatic sealing of the mounting tube 6.

[0024] Furthermore, a box body 10 is installed on the side of the collection box 1, and a controller and a power supply are installed inside the box body 10. A control panel 11 is installed on one side of the box body 10; the controller can control the electric push rod 8 to start at a time, so as to facilitate air sampling in different time periods. The power supply is used to move the device, and the control panel 11 is used to manually control multiple electric push rods 8.

[0025] Furthermore, support frames 12 are installed on both sides of the lower end of the collection box 1 near the edge, and the support frames 12 are used to support the collection box 1. Lifting frames 13 are installed in the middle of both sides of the upper end of the collection box 1. The setting of the lifting frame 13 is convenient for driving the collection box 1 to be lifted, so as to facilitate sampling of air at a specified height through external lifting equipment.

[0026] Furthermore, a discharge pipe 14 is installed at the bottom end of the sampling bag 5, and a valve 15 is provided on the discharge pipe 14. The discharge pipe 14 is used to discharge the sampled air inside the sampling bag 5. The valve 15 can be turned to realize the on-off control of the discharge pipe 14. By evacuating the discharge pipe 14, the air inside the sampling bag 5 can be easily extracted.

[0027] The method of using the present embodiment is as follows: when it is necessary to sample the air of a certain environment, the mounting tube 6 at the upper end of the sampling bag 5 is mounted on the connecting tube 4, and the collection box 1 is lifted to a certain height by an external lifting device; when sampling the air, the exhaust fan 2 rotates, and the exhaust fan 2 accelerates the flow rate of the air inside the collection box 1. During this process, the controller controls the electric push rod 8 to extend at a fixed time, and the electric push rod 8 drives the sealing plate 701 to move through the push rod 9, so that the sealing plate 701 moves downward, and at the same time, the sealing plate 701 moves through the moving rod 702 and the connecting plate 701. 04 compresses the elastic spring 703, and the air enters the sampling bag 5 through the gap between the mounting tube 6 and the sealing plate 701; when a certain amount of air is sampled inside the sampling bag 5, the electric push rod 8 is shortened, and the push rod 9 releases the push on the sealing plate 701. Under the action of the elastic spring 703 restoring, the sealing plate 701 seals the lower end of the mounting tube 6 to achieve the sealing of the sampling bag 5; the controller can control multiple electric push rods 8 to start at a time, and can sample air at different time periods. After the sampling is completed, it can be removed from the connecting tube 4 through the mounting tube 6.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Those skilled in the art can modify or replace the technical solutions recorded in the above embodiments. Any modification, equivalent replacement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air sampling device for environmental pollution monitoring, comprising a collection box (1), characterized in that: An exhaust fan (2) is installed on one side of the collection box (1), and a filter screen (16) is installed on the other side of the collection box (1). A plurality of through holes (3) are arranged at the bottom of the collection box (1) between the exhaust fan (2) and the filter screen (16). A connecting pipe (4) is installed at the bottom of the collection box (1) below the through holes (3). A sampling bag (5) is detachably installed below the connecting pipe (4). A mounting pipe (6) is arranged at the upper end of the sampling bag (5). An electric push rod (8) is installed at the top of the collection box (1) above the through holes (3). The output end of the electric push rod (8) is located inside the collection box (1) and is equipped with a top rod (9).

2. The air sampling device for environmental pollution monitoring according to claim 1, characterized in that: A sealing component is installed inside the installation tube (6).

3. The air sampling device for environmental pollution monitoring according to claim 2, characterized in that: The surface of the connecting pipe (4) is provided with thread grooves, and the mounting pipe (6) is threadedly connected to the inside of the connecting pipe (4).

4. The air sampling device for environmental pollution monitoring according to claim 3, characterized in that: The sealing assembly comprises a sealing plate (701), a moving rod (702), an elastic spring (703), a connecting plate (704) and a sealing gasket (705); the moving rods (702) are installed on both sides of the upper end of the mounting tube (6) through mounting holes; the connecting plate (704) is installed on the upper end of the moving rod (702); the elastic spring (703) is installed on the moving rod (702) between the lower end of the connecting plate (704) and the upper end of the connecting tube (4); the sealing plate (701) is installed on the lower ends of the two moving rods (702); and the sealing gasket (705) is laid on the upper end of the sealing plate (701).

5. The air sampling device for environmental pollution monitoring according to claim 1, characterized in that: A box body (10) is installed on the side of the collection box (1), a controller and a power supply are installed inside the box body (10), and a control panel (11) is installed on one side of the box body (10).

6. The air sampling device for environmental pollution monitoring according to claim 1, characterized in that: Support frames (12) are installed on both sides of the lower end of the collection box (1), and a lifting frame (13) is arranged on the upper end of the collection box (1).

7. The air sampling device for environmental pollution monitoring according to claim 1, characterized in that: A discharge pipe (14) is installed at the bottom end of the sampling bag (5), and a valve (15) is provided on the discharge pipe (14).

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