Sampling device for gas detection

Abstract

The utility model relates to the technical field of gas detection, and provides a sampling device for gas detection, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a collecting chamber, the left side of the collecting chamber is fixedly connected with a guide pipe, and the left side of the guide pipe is fixedly connected with a gas suction chamber. An air inlet pipe is fixedly connected to the left side of the air suction chamber, a fan is fixedly connected to the interior of the air suction chamber, a sliding rod is slidably connected to the side face of the air inlet pipe, a nut is in threaded connection to the surface of the sliding rod, and a baffle ring located in the air inlet pipe is fixedly connected to one end of the sliding rod. And when the filter screen needs to be replaced, the fixing plate is pulled to be separated from the filter screen, the sliding rod slides towards the left side after the nut is unscrewed, the filter screen is pushed out from the interior of the air inlet pipe by moving the baffle ring, and the filter screen is detached.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, and specifically to a gas detection sampling device. Background Technology

[0002] Gas detection refers to the use of specialized instruments or equipment to detect pollutants in the air, such as harmful gases, volatile organic compounds, and particulate matter. This detection helps to assess and manage environmental quality and take necessary measures to protect ecosystems and human health.

[0003] A search revealed an existing patent (publication number: CN 222258868 U) that discloses a gas detection sampling device, including a base, a collection box movably mounted on the base, a fan mounted on the outer wall of one side of the collection box, and a sampling mechanism movably mounted on the collection box. The sampling mechanism includes a sampling frame, a sampling tube, and a sealing frame. The sampling tube is movably mounted on the sampling frame, and the sealing frames are movably mounted on both sides of the sampling tube. The gas detection sampling device provided by this utility model draws air into the collection box through the fan, and then samples the air through the sampling mechanism to ensure that the air enters the sampling tube evenly. After sampling, the sampling tube is sealed at both ends by the sealing frames to ensure that the air inside the sampling tube is continuously retained. The device can then be moved to a detection machine for testing. During sampling, the base is placed vertically on the ground, and the angle of the fan drawing in air is adjusted by adjusting the angle of the collection box.

[0004] However, while the above solution can achieve the purpose of gas collection, the filter and equipment are an integral structure that is not easy to clean. After long-term use, the surface will be covered with a lot of dust and particles, which will affect the gas from entering the collection equipment.

[0005] In view of this, the present invention proposes a sampling device for gas detection. Summary of the Invention

[0006] This invention proposes a gas detection sampling device, which solves the problem that although related technologies can achieve the purpose of gas collection, the filter and equipment are an integral structure that is not easy to clean. After long-term use, the surface will be covered with a lot of dust and powder, which will affect the gas entering the collection device.

[0007] The technical solution of this utility model is as follows: A gas detection sampling device includes a base plate, a support rod fixedly connected to the top of the base plate, a collection chamber fixedly connected to the top of the support rod, a conduit fixedly connected to the left side of the collection chamber, an air intake chamber fixedly connected to the left side of the conduit, an air inlet pipe fixedly connected to the left side of the air intake chamber, a fan fixedly connected inside the air intake chamber, a sliding rod slidably connected to the side of the air inlet pipe, a nut threaded onto the surface of the sliding rod, and a retaining ring fixedly connected to one end of the sliding rod inside the air inlet pipe. A filter screen located inside the intake pipe is attached to one side of the chamber. A first spring is fixedly connected to both the top and bottom of the intake pipe. One end of each of the two sets of first springs is fixedly connected to a fixing plate that is slidably connected to the intake pipe. A collection box is placed inside the collection chamber. A through hole is provided on the left side of the collection box. A sealing plate is slidably connected inside the collection box. A second spring that is fixedly connected to the collection box is fixedly connected to both ends of the sealing plate. A top plate is fixedly connected to the top of the collection chamber by screws. A threaded rod embedded inside the sealing plate is threaded to the top of the top plate.

[0008] Preferably, a mounting plate is fixedly connected to the top of the base plate, a screw is threadedly connected to the inside of the mounting plate, and a plug is fixedly connected to the bottom of the screw.

[0009] Preferably, the contact area between the air intake pipe and the nut is set as a plane, and the slide rod fixes the retaining ring in a fixed state through the nut.

[0010] Preferably, both the retaining ring and the filter screen are tightly fitted to the inside of the air intake pipe.

[0011] Preferably, when the fixing plate is inserted into the air intake pipe, it fits tightly against the filter screen, and the filter screen is fixed in a fixed state with the retaining ring through the fixing plate.

[0012] Preferably, the air inlets on both sides of the fan correspond to the positions of the duct and the air inlet pipe, respectively.

[0013] Preferably, the sealing plate is tightly integrated with the collection box, and the sealing plate can completely seal the through hole when it descends.

[0014] Preferably, the sealing plate is fixed by a lead screw.

[0015] Preferably, the insertion rod is arranged vertically downwards, and the bottom of the insertion rod is pointed.

[0016] Preferably, the bottom of the base plate is provided with a slot corresponding to the position of the insertion rod.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, by setting an insertion rod, the screw can be rotated and lowered along the mounting plate, and the insertion rod is lowered together. Since the bottom of the insertion rod is sharp, the insertion rod will pass through the base plate and insert into the soil, thereby fixing the base plate and improving the stability of the equipment during operation.

[0019] In this invention, a filter screen is installed to filter the gas. When the filter screen needs to be replaced, pull the fixing plate to detach it from the filter screen, loosen the nut, slide the slide rod to the left, and push the filter screen out of the air inlet pipe through the moving retaining ring to remove the filter screen. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram showing the location of the fan in this utility model;

[0023] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the retaining ring structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the collection box structure of this utility model.

[0026] In the diagram: 1. Base plate; 2. Support rod; 3. Collection chamber; 4. Conduit; 5. Intake chamber; 6. Inlet pipe; 7. Fan; 8. Slide rod; 9. Nut; 10. Retaining ring; 11. Filter screen; 12. First spring; 13. Fixing plate; 14. Collection box; 15. Through hole; 16. Sealing plate; 17. Second spring; 18. Lead screw; 19. Mounting plate; 20. Screw; 21. Insert rod; 22. Top plate. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] A preferred embodiment of the gas detection sampling device provided by this utility model is, for example... Figures 1 to 5As shown: A gas detection sampling device includes a base plate 1, a support rod 2 fixedly connected to the top of the base plate 1, a collection chamber 3 fixedly connected to the top of the support rod 2, a conduit 4 fixedly connected to the left side of the collection chamber 3, an intake chamber 5 fixedly connected to the left side of the conduit 4, an inlet pipe 6 fixedly connected to the left side of the intake chamber 5, a fan 7 fixedly connected inside the intake chamber 5, a slide rod 8 slidably connected to the side of the inlet pipe 6, a nut 9 threadedly connected to the surface of the slide rod 8, a retaining ring 10 located inside the inlet pipe 6 fixedly connected to one end of the slide rod 8, and one side of the retaining ring 10 fitting against the inside of the inlet pipe 6. The filter screen 11 and the top and bottom of the air inlet pipe 6 are both fixedly connected to the first spring 12. One end of each of the two sets of first spring 12 is fixedly connected to the fixing plate 13 which is slidably connected to the air inlet pipe 6. The collection chamber 3 contains a collection box 14. The left side of the collection box 14 is provided with a through hole 15. The inside of the collection box 14 is slidably connected to a sealing plate 16. Both ends of the sealing plate 16 are fixedly connected to the second spring 17 which is fixedly connected to the collection box 14. The top of the collection chamber 3 is fixedly connected to a top plate 22 by screws. The top of the top plate 22 is threadedly connected to a screw rod 18 which is embedded in the sealing plate 16.

[0030] In this embodiment, the contact area between the air intake pipe 6 and the nut 9 is set as a plane, and the slide rod 8 fixes the retaining ring 10 in a fixed state through the nut 9, which makes it easier for the contact area between the nut 9 and the air intake pipe 6 to fit more tightly.

[0031] In this embodiment, both the baffle ring 10 and the filter screen 11 are tightly fitted to the inside of the air intake pipe 6, which can better filter the gas.

[0032] In this embodiment, when the fixing plate 13 is inserted into the air intake pipe 6, it fits tightly with the filter screen 11. The filter screen 11 is fixed to the retaining ring 10 through the fixing plate 13. When the filter screen 11 needs to be replaced, the fixing plate 13 is pulled to detach it from the filter screen 11. After loosening the nut 9, the slide rod 8 is slid to the left. The filter screen 11 is pushed out from the air intake pipe 6 by moving the retaining ring 10, thereby removing the filter screen 11.

[0033] In this embodiment, the air inlets on both sides of the fan 7 correspond to the positions of the duct 4 and the air inlet pipe 6, respectively. When the fan 7 is turned on, it draws air in from inside the air inlet pipe 6 and discharges it into the collection chamber 3 through the duct 4, so that the collected gas enters the collection box 14 through the through hole 15 to achieve gas collection.

[0034] In this embodiment, the sealing plate 16 is tightly connected to the collection box 14. When the sealing plate 16 descends, it can completely close the through hole 15. Rotating the screw 18 causes it to move out of the interior of the sealing plate 16. Under the action of the second spring 17, the sealing plate 16 will quickly descend to close the through hole 15 and prevent gas from escaping.

[0035] In this embodiment, the sealing plate 16 is fixed by the lead screw 18, which can prevent the sealing plate 16 from falling and affecting gas transmission during gas collection.

[0036] Example 2

[0037] Based on Embodiment 1, a preferred embodiment of the gas detection sampling device provided by this utility model is as follows: Figures 1 to 5 As shown: A mounting plate 19 is fixedly connected to the top of the base plate 1, a screw 20 is threadedly connected to the inside of the mounting plate 19, and a plug 21 is fixedly connected to the bottom of the screw 20.

[0038] In this embodiment, the insertion rod 21 is set vertically downwards, and the bottom of the insertion rod 21 is sharp. By setting the insertion rod 21, the screw 20 can be rotated to descend along the mounting plate 19, and the insertion rod 21 will descend together. Since the bottom of the insertion rod 21 is sharp, the insertion rod 21 will pass through the bottom plate 1 and insert into the soil.

[0039] In this embodiment, the bottom of the base plate 1 is provided with a slot corresponding to the insertion rod 21, which allows the insertion rod 21 to penetrate the base plate 1 and enter the soil.

[0040] The working principle and usage process of this utility model are as follows: First, place the equipment in the designated location. By setting the insertion rod 21, the screw 20 can be rotated to descend along the mounting plate 19, and the insertion rod 21 will also descend. Since the bottom of the insertion rod 21 is sharp, the insertion rod 21 will pass through the base plate 1 and insert into the soil, thereby fixing the base plate 1 and improving the stability of the equipment during operation. Then, turn on the fan 7 to draw air in from the air inlet pipe 6 and discharge it into the collection chamber 3 through the conduit 4, so that the collected gas enters the collection box 14 through the through hole 15 to achieve gas purification. After the body is collected, rotate the screw 18 to move it out of the interior of the sealing plate 16. Under the action of the second spring 17, the sealing plate 16 will quickly descend to seal the through hole 15 and prevent gas from overflowing. Then, remove the top plate 22 and take out the collection box 14. The gas can be filtered by the filter screen 11. When the filter screen 11 needs to be replaced, pull the fixing plate 13 to make it separate from the filter screen 11. After loosening the nut 9, slide the slide bar 8 to the left and push the filter screen 11 out of the interior of the air inlet pipe 6 by moving the retaining ring 10 to remove the filter screen 11.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gas detection sampling device, comprising a base plate (1), characterized in that, A support rod (2) is fixedly connected to the top of the base plate (1), a collection chamber (3) is fixedly connected to the top of the support rod (2), a conduit (4) is fixedly connected to the left side of the collection chamber (3), an air intake chamber (5) is fixedly connected to the left side of the conduit (4), an air inlet pipe (6) is fixedly connected to the left side of the air intake chamber (5), a fan (7) is fixedly connected inside the air intake chamber (5), a slide rod (8) is slidably connected to the side of the air inlet pipe (6), a nut (9) is threaded onto the surface of the slide rod (8), a retaining ring (10) located inside the air inlet pipe (6) is fixedly connected to one end of the slide rod (8), and a filter screen (11) located inside the air inlet pipe (6) is attached to one side of the retaining ring (10). The top and bottom of the air intake pipe (6) are fixedly connected with a first spring (12). One end of each of the two sets of first springs (12) is fixedly connected with a fixed plate (13) that is slidably connected to the air intake pipe (6). The inside of the collection chamber (3) is a collection box (14). The left side of the collection box (14) is provided with a through hole (15). The inside of the collection box (14) is slidably connected with a sealing plate (16). Both ends of the sealing plate (16) are fixedly connected with a second spring (17) that is fixedly connected to the collection box (14). The top of the collection chamber (3) is fixedly connected with a top plate (22) by screws. The top of the top plate (22) is threadedly connected with a screw rod (18) that is embedded in the sealing plate (16).

2. The gas detection sampling device according to claim 1, characterized in that, The top of the base plate (1) is fixedly connected to a mounting plate (19), and the mounting plate (19) is internally threaded with a screw (20). The bottom of the screw (20) is fixedly connected to a plug (21).

3. The gas detection sampling device according to claim 1, characterized in that, The contact area between the air intake pipe (6) and the nut (9) is set as a plane, and the slide rod (8) fixes the retaining ring (10) through the nut (9).

4. A gas detection sampling device according to claim 1, characterized in that, Both the retaining ring (10) and the filter screen (11) are tightly fitted to the inside of the air intake pipe (6).

5. A gas detection sampling device according to claim 1, characterized in that, When the fixing plate (13) is inserted into the air intake pipe (6), it fits tightly with the filter screen (11). The filter screen (11) is fixed by the fixing plate (13) and the retaining ring (10).

6. A gas detection sampling device according to claim 1, characterized in that, The air inlets on both sides of the fan (7) correspond to the positions of the duct (4) and the air inlet (6), respectively.

7. A gas detection sampling device according to claim 1, characterized in that, The sealing plate (16) is tightly connected to the collection box (14), and the sealing plate (16) can completely close the through hole (15) when it descends.

8. A gas detection sampling device according to claim 1, characterized in that, The sealing plate (16) is fixed by a lead screw (18).

9. A gas detection sampling device according to claim 2, characterized in that: The insertion rod (21) is set vertically downwards, and the bottom of the insertion rod (21) is sharp.

10. A gas detection sampling device according to claim 2, characterized in that: The bottom of the base plate (1) is provided with a slot corresponding to the position of the insertion rod (21).

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