A special sampler for surface layer VOC detection

Abstract

The utility model relates to environmental detection technical field discloses a kind of special samplers of surface layer VOC detection, including limiting mechanism, filtering mechanism and protection mechanism, the limiting mechanism is located inside filtering mechanism, the limiting mechanism includes knob, the inner wall of the knob is fixedly connected with bidirectional screw rod, the surface of the bidirectional screw rod is threadedly connected with moving plate, the upper end of the moving plate is fixedly connected with sliding block, the utility model is limited mechanism by being set, inclined block is limited to fixed plate and generates effect, avoid its left and right swing, limiting column enters the inside of protective shell with the upward movement of inclined column, effectively prevent fixed plate swing, by rotating knob in opposite direction and drive inclined block from fixed plate inside slide out, entire operation process can ensure that filter screen does not occur swing in use process, while improving detection accuracy, operating personnel can quickly take out and install filter screen, further improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a special sampler for surface VOC detection. Background Technology

[0002] A surface VOC sampler is a device used to collect samples of volatile organic compounds (VOCs) in the atmosphere. Its main function is to capture VOCs in the air into a sampling medium through a specific sampling method. Then, by analyzing these collected samples, the type and concentration of VOCs can be determined. It can accurately monitor and analyze VOC pollution from different sources, providing a scientific basis for environmental protection, industrial emission control and air quality management.

[0003] Currently, there are various types of surface VOC detection samplers on the market. However, after prolonged use, the surface of the internal filter screen of these devices often accumulates a large amount of impurities, leading to a decrease in sampling efficiency. Operators often need to perform complex manual operations to disassemble and install them, which not only consumes a lot of time and energy but also reduces overall work efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a dedicated sampler for surface VOC detection.

[0005] This utility model is achieved by the following technical solution: a special sampler for surface VOC detection, including a limiting mechanism, a filtering mechanism and a protective mechanism, wherein the limiting mechanism is located inside the filtering mechanism and the filtering mechanism is located inside the protective mechanism; The limiting mechanism includes a knob, a bidirectional threaded rod fixedly connected to the inner wall of the knob, a movable plate threadedly connected to the surface of the bidirectional threaded rod, a slider fixedly connected to the upper end of the movable plate, an inclined block fixedly connected to the surface of the slider, an inclined column slidably connected to the surface of the inclined block, a limiting post fixedly connected to the upper end of the inclined column, and a spring sleeved on the surface of the limiting post.

[0006] Through the above technical solution, the spring is used to assist the sliding of the limiting post, ensuring that after the inclined block releases the limiting post, the limiting post can smoothly move downward back to the initial position.

[0007] As a further improvement to the above solution, the number of the moving plates is set to two, and the two moving plates are symmetrically distributed on the left and right sides with the knob as the center, and the inclined block is located inside the slider.

[0008] Through the above technical solution, the symmetrically arranged movable plates reduce the deformation or damage that may be caused by unilateral force, and enhance the overall balance and stability.

[0009] As a further improvement to the above solution, the filtration mechanism includes a fixed plate, a fixed frame is fixedly connected to the rear end of the fixed plate, a filter screen is fixedly connected to the inner wall of the fixed frame, and a connecting plate is slidably connected to the surface of the fixed plate.

[0010] Through the above technical solution, the connecting plate can effectively limit the position of the fixing plate and the fixing frame, thereby ensuring that the filter screen is stably located inside the device.

[0011] As a further improvement to the above solution, the surface of the knob is rotatably connected to the inner wall of the connecting plate, and the movable plate is located inside the connecting plate.

[0012] As a further improvement to the above solution, the inclined column is located inside the fixed plate, and the bottom of the spring is fixedly connected to the upper end of the inclined column.

[0013] As a further improvement to the above solution, the protective mechanism includes a protective shell, an air inlet pipe is fixedly connected to the upper end of the protective shell, and a baffle is rotatably connected to the inner wall of the front end of the protective shell.

[0014] Through the above technical solutions, the protective shell can effectively isolate interference from the external environment, thereby protecting sensitive internal components and ensuring the accuracy and stability of sampling.

[0015] As a further improvement to the above solution, the surface of the fixing plate is fixedly connected to the inner wall of the protective shell, and the baffle is located at the front end of the knob.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a limiting mechanism. The operator rotates a knob to rotate a bidirectional threaded rod, causing the moving plates on both sides to move a slider that pushes an inclined block. The inclined block moves inward into the fixed plate, eventually contacting the inclined column and generating a thrust. The inclined block limits the fixed plate, preventing it from swaying left and right. The limiting column moves upward with the inclined column and enters the protective shell, effectively preventing the fixed plate from swaying up and down. When cleaning the filter screen is required, rotating the knob in the opposite direction causes the inclined block to slide out from inside the fixed plate, allowing the fixed frame to be easily removed. The entire operation ensures that the filter screen does not shake during use, maintaining its stability. While improving detection accuracy, the operator can quickly remove and install the filter screen, further improving work efficiency.

[0017] This utility model effectively limits the positioning of the fixed plate and the fixed frame by setting a connecting plate, ensuring that the filter screen remains stable inside the device and preventing positional displacement due to external vibration or impact, thereby improving overall stability. The baffle can fully protect the knob, avoiding long-term exposure to the external environment and the influence of dust, moisture or other external forces, thereby effectively extending the service life of the knob, reducing the risk of failure caused by damage, and further improving the actual effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the protective mechanism of this utility model; Figure 2 This is a schematic diagram of the internal structure of the protective mechanism of this utility model; Figure 3 This is a schematic diagram of the limiting mechanism of this utility model; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the filter mechanism of this utility model.

[0019] Explanation of key symbols: 1. Limiting mechanism; 11. Knob; 12. Two-way threaded rod; 13. Moving plate; 14. Slider; 15. Inclined block; 16. Inclined column; 17. Limiting column; 18. Spring; 2. Filtering mechanism; 21. Fixing plate; 22. Fixing frame; 23. Filter screen; 24. Connecting plate; 3. Protective mechanism; 31. Protective shell; 32. Air inlet pipe; 33. Baffle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Example: Please combine Figure 1-5 This embodiment of a surface VOC detection sampler includes a limiting mechanism 1, a filtering mechanism 2, and a protective mechanism 3. The limiting mechanism 1 is located inside the filtering mechanism 2, and the filtering mechanism 2 is located inside the protective mechanism 3. The limiting mechanism 1 includes a knob 11, a bidirectional threaded rod 12 fixedly connected to the inner wall of the knob 11, a movable plate 13 threadedly connected to the surface of the bidirectional threaded rod 12, a slider 14 fixedly connected to the upper end of the movable plate 13, a wedge block 15 fixedly connected to the surface of the slider 14, a wedge post 16 slidably connected to the surface of the wedge block 15, a limiting post 17 fixedly connected to the upper end of the wedge post 16, and a spring 18 sleeved on the surface of the limiting post 17. The spring 18 is used to assist the sliding of the limiting post 17 to ensure that after the wedge block 15 releases its limitation on the wedge post 16, the limiting post 17 can smoothly move downward back to its initial position.

[0022] The number of movable plates 13 is set to two, and the two movable plates 13 are symmetrically distributed on the left and right sides with the knob 11 as the center. The inclined block 15 is located inside the slider 14. The symmetrical arrangement of the movable plates 13 reduces the deformation or damage that may be caused by unilateral force and enhances the overall balance and stability.

[0023] The filter mechanism 2 includes a fixed plate 21, a fixed frame 22 is fixedly connected to the rear end of the fixed plate 21, a filter screen 23 is fixedly connected to the inner wall of the fixed frame 22, and a connecting plate 24 is slidably connected to the surface of the fixed plate 21. The connecting plate 24 can effectively limit the fixed plate 21 and the fixed frame 22, thereby ensuring that the filter screen 23 is stably located inside the device.

[0024] The surface of the knob 11 is rotatably connected to the inner wall of the connecting plate 24, and the movable plate 13 is located inside the connecting plate 24.

[0025] The inclined column 16 is located inside the fixed plate 21, and the bottom of the spring 18 is fixedly connected to the upper end of the inclined column 16.

[0026] The protective mechanism 3 includes a protective shell 31, with an air inlet pipe 32 fixedly connected to the upper end of the protective shell 31, and a baffle 33 rotatably connected to the inner wall of the front end of the protective shell 31. The protective shell 31 can effectively isolate interference from the external environment, thereby protecting the internal sensitive components and ensuring the accuracy and stability of sampling.

[0027] The surface of the fixing plate 21 is fixedly connected to the inner wall of the protective shell 31, and the baffle 33 is located at the front end of the knob 11.

[0028] The implementation principle of a surface VOC detection sampler in this embodiment is as follows: The operator can turn the knob 11 to rotate it. The rotating knob 11 drives the bidirectional threaded rod 12 to rotate as well, thereby moving the moving plates 13 on both sides of the bidirectional threaded rod 12. Then, the moving plates 13 can drive the inclined blocks 15 to move together through the slider 14, thereby causing the inclined blocks 15 to move continuously into the fixed plate 21. When the inclined blocks 15 enter the fixed plate 21, they can contact the inclined column 16. As the inclined blocks 15 continue to move, they will exert a pushing force on the inclined column 16. At this time, the inclined column 16 will move upward under the pushing force, thereby driving the limiting column 17 to move upward as well. When the inclined blocks 15 are completely inside the fixed plate 21, the knob 11 is stopped. At this time, the inclined blocks 15 can effectively limit the fixed plate 21 and prevent it from swaying left and right. The upward-moving limiting column 17 The filter screen 23 can enter the interior of the protective shell 31, effectively preventing the fixing plate 21 from shaking up and down, thus ensuring that the filter screen 23 is stably located inside the protective shell 31. When the operator needs to remove the filter screen 23 for cleaning, the baffle 33 is opened, and then the knob 11 is rotated in the opposite direction. At this time, the knob 11 can drive the inclined block 15 to slide out from the interior of the fixing plate 21. The inclined block 15 sliding out from the interior of the fixing plate 21 can remove the limit on the inclined column 16 and the fixing plate 21, so that the operator can easily remove the fixing frame 22 to clean the filter screen 23. The protective shell 31 is equipped with a negative pressure device, so that air can smoothly enter the interior of the device from the air inlet pipe 32. The filter screen 23 can filter the air, thereby improving the detection accuracy. The whole operation process is convenient and quick, and the operator can quickly remove and install the filter screen 23, further speeding up the operator's work efficiency.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A dedicated sampler for surface VOC detection, characterized in that, It includes a limiting mechanism (1), a filtering mechanism (2) and a protective mechanism (3), wherein the limiting mechanism (1) is located inside the filtering mechanism (2) and the filtering mechanism (2) is located inside the protective mechanism (3); The limiting mechanism (1) includes a knob (11), a bidirectional threaded rod (12) is fixedly connected to the inner wall of the knob (11), a movable plate (13) is threadedly connected to the surface of the bidirectional threaded rod (12), a slider (14) is fixedly connected to the upper end of the movable plate (13), an inclined block (15) is fixedly connected to the surface of the slider (14), an inclined column (16) is slidably connected to the surface of the inclined block (15), a limiting column (17) is fixedly connected to the upper end of the inclined column (16), and a spring (18) is sleeved on the surface of the limiting column (17).

2. The surface layer VOC detection sampler as described in claim 1, characterized in that: The number of the movable plates (13) is set to two, and the two movable plates (13) are symmetrically distributed on the left and right sides with the knob (11) as the center. The inclined block (15) is located inside the slider (14).

3. The surface layer VOC detection sampler as described in claim 2, characterized in that: The filtration mechanism (2) includes a fixed plate (21), a fixed frame (22) is fixedly connected to the rear end of the fixed plate (21), a filter screen (23) is fixedly connected to the inner wall of the fixed frame (22), and a connecting plate (24) is slidably connected to the surface of the fixed plate (21).

4. A surface layer VOC detection sampler as described in claim 3, characterized in that: The surface of the knob (11) is rotatably connected to the inner wall of the connecting plate (24), and the movable plate (13) is located inside the connecting plate (24).

5. A surface layer VOC detection sampler as described in claim 4, characterized in that: The inclined column (16) is located inside the fixed plate (21), and the bottom of the spring (18) is fixedly connected to the upper end of the inclined column (16).

6. A surface layer VOC detection sampler as described in claim 5, characterized in that: The protective mechanism (3) includes a protective shell (31), an air inlet pipe (32) is fixedly connected to the upper end of the protective shell (31), and a baffle (33) is rotatably connected to the inner wall of the front end of the protective shell (31).

7. A surface layer VOC detection sampler as described in claim 6, characterized in that: The surface of the fixing plate (21) is fixedly connected to the inner wall of the protective shell (31), and the baffle (33) is located at the front end of the knob (11).

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