Portable non-methane total hydrocarbon sampler

Abstract

The utility model discloses a portable non-methane total hydrocarbon sampler, which relates to the technical field of non-methane total hydrocarbon detection and comprises a box body, a first connecting pipe connected to the top of one side of the box body, a hose connected to one end of the first connecting pipe, a sampling gun arranged at one end of the hose, and a first limiting ring connected to the middle of one side of the box body. A second limiting ring is connected to one side of the first limiting ring through a hinge, the sampling gun is arranged between the first limiting ring and the second limiting ring, a storage mechanism is arranged on one side of the box body, and a partition plate is connected to the middle of the box body; the sampling device has the beneficial effects that the position of the sampling gun is limited through the matching of the first limiting ring and the second limiting ring, so that the sampling gun is vertically positioned on one side of the box body, and after sampling is finished, the sampling gun can be quickly collected, the occupied space of the sampling device is reduced, the sampling device is convenient to carry, and a worker can conveniently carry and move the sampling device.

Description

Technical Field

[0001] The utility model relates to a sampler, in particular to a portable non-methane total hydrocarbon sampler, belonging to the technical field of non-methane total hydrocarbon detection. Background Art

[0002] Non-methane hydrocarbons refer to all volatile hydrocarbons except methane. When NMHC in the atmosphere exceeds a certain concentration, it is not only directly harmful to human health, but also can produce photochemical smog under certain conditions when exposed to sunlight, causing harm to the environment and humans. Therefore, it is particularly important to monitor non-methane hydrocarbons in ambient air and exhaust gas. Samplers are needed to collect air samples and test the samples for non-methane hydrocarbons.

[0003] Among them, the application number "CN202121354455.5" discloses "a non-methane total hydrocarbon sampler", which includes a sampling gun, a vacuum box and a vacuum pump. The sampling gun and the vacuum pump are respectively connected to the vacuum box, and a first pagoda connector for connecting with the sampling gun is fixed on the left side wall of the vacuum box. A second pagoda connector for connecting with the vacuum pump is fixed on the right side wall of the vacuum box. The first pagoda connector and the second pagoda connector are staggered, and one end of the first pagoda connector is connected to a main pipe, which is located in the vacuum box. A plurality of branch pipes are also arranged at intervals on the main pipe, and each branch pipe is connected to a sampling bag; the advantage is that the collection efficiency is high. After further searching, the application number "CN202021911192.9" discloses "a non-methane total hydrocarbon sampling device", including a vacuum box, a two-way sampling pump placed outside the vacuum box and connected to the vacuum box, a vacuum sampling air bag placed inside the vacuum box, a sampling extension device, a sampling gun, and a sampling syringe provided on the sampling gun; wherein, a one-way three-way valve is provided on the sampling syringe, one end of the sampling extension device is connected to the one-way three-way valve, and the other end is connected to the vacuum sampling air bag through a gas interface. This device solves the problem that the conventional sampling instruments for non-methane total hydrocarbons on the market currently use large syringes, which leads to the inability to ensure the air tightness of the sampling port during the sampling process, which easily causes sampling errors, and the dead volume of the sampling is too large due to the use of an extended sampling tube, which increases the sampling error.

[0004] However, the above-mentioned non-methane total hydrocarbon sampling device still has certain shortcomings in practical applications. Specifically, after the sampling is completed, the sampling gun is not easy to store due to its large size. This brings the following inconveniences: First, the sampling gun is large in size and it is difficult to quickly change the sampling point or perform mobile sampling, which has a certain impact on the sampling efficiency; second, when the sampler needs to be placed in a car or other small space for a long time, it is not conducive to placement and carrying; third, if the sampling gun fails on site, it is difficult to perform on-site maintenance due to its large size and difficulty in disassembly, which may affect the smooth progress of the sampling task; fourth, after the sampling is completed, the entire large-volume sampling gun needs to be transported back to the laboratory for analysis, which is not conducive to the utilization of the carrying space in the vehicle. Therefore, the utility model provides a portable non-methane total hydrocarbon sampler. Utility Model Content

[0005] The utility model aims to provide a portable non-methane total hydrocarbon sampler to solve the problem that the sampling gun proposed in the above background technology is inconvenient to collect and the sampler is difficult to be portable and movable.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable non-methane total hydrocarbon sampler, comprising a box body, a first connecting pipe is connected to the top of one side of the box body, one end of the first connecting pipe is connected to a hose, one end of the hose is provided with a sampling gun, a first limiting ring is connected to the middle of one side of the box body, one side of the first limiting ring is connected to a second limiting ring through a hinge, the sampling gun is arranged between the first limiting ring and the second limiting ring, a storage mechanism is provided on one side of the box body, a partition is connected to the middle of the box body, a fixing groove is opened at the bottom of the other side of the box body, a vacuum pump is installed in the fixing groove, the air inlet end of the vacuum pump is connected to the second connecting pipe, and one end of the second connecting pipe is connected to the top of the other side of the box body.

[0007] As a preferred technical solution of the present utility model, two limiting plates are provided at the bottom of the sampling gun, and the two limiting plates are respectively located above and below the first limiting ring.

[0008] As a preferred technical solution of the utility model, a first fixed block is connected to the middle of one side of the first limiting ring, a second fixed block is connected to the middle of one side of the second limiting ring, a first screw is threadedly connected to one side of the second fixing block, a first threaded hole is opened in the middle of one side of the first fixing block, one end of the first screw passes through the second fixing block and is threadedly connected to the first threaded hole.

[0009] As a preferred technical solution of the utility model, universal wheels are provided at the four corners of the bottom end of the box body, L-shaped fixing rods are connected to both sides of the bottom back of the box body, the outside of the L-shaped fixing rods is slidably connected to a connecting tube, and the top ends of the two connecting tubes are connected to push plates.

[0010] As a preferred technical solution of the utility model, a second screw is threadedly connected to the bottom of one side of the connecting tube, and second threaded holes are provided at the top of one side and the bottom of one side of the L-shaped fixing rod. One end of the second screw passes through one side of the connecting tube and is threadedly connected to the second threaded hole.

[0011] As a preferred technical solution of the utility model, the storage mechanism includes a fixed plate and a connecting plate, the fixed plate is arranged on one side of the box body, the top and bottom of the fixed plate are slidably connected with guide rods, one end of the two guide rods is connected to a movable splint, the middle part of the fixed plate is threadedly connected with a third screw, one end of the third screw is rotatably connected to the middle part of one side of the movable splint through a bearing, the connecting plate is arranged on one side of the box body, and one side of the connecting plate is connected to a fixed splint.

[0012] As a preferred technical solution of the utility model, the other end of the guide rod is connected to an anti-dropping block, and the other end of the third screw rod is externally connected to a rotating rod.

[0013] As a preferred technical solution of the utility model, one side of the fixed clamping plate and the other side of the movable clamping plate are both connected with rubber pads.

[0014] Compared with the related art, the portable non-methane total hydrocarbon sampler provided by the utility model has the following beneficial effects:

[0015] Through the cooperation of the first limiting ring and the second limiting ring, the position of the sampling gun is limited so that the sampling gun is vertically located on one side of the box. After the sampling is completed, the sampling gun can be quickly collected to reduce the space occupied by the sampler, making the sampler easy to carry, and thus facilitating the staff to carry and move the sampler. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a structural schematic diagram of the side surface of the utility model;

[0018] Figure 3 This is a schematic diagram of the explosion structure of the first limiting ring of the utility model;

[0019] Figure 4 It is a schematic diagram of the exploded structure of the storage mechanism of the utility model.

[0020] In the figure: 1. box body; 2. partition; 3. fixing groove; 4. storage mechanism; 5. second connecting pipe; 6. vacuum pump; 7. first connecting pipe; 8. hose; 9. sampling gun; 10. first limiting ring; 11. second limiting ring; 12. limiting plate; 13. first fixing block; 14. second fixing block; 15. first screw; 16. first threaded hole; 17. universal wheel; 18. L-shaped fixing rod; 19. connecting tube; 20. push plate; 21. second screw; 22. second threaded hole; 401. fixing plate; 402. connecting plate; 403. guide rod; 404. movable clamping plate; 405. third screw; 406. anti-dropping block; 407. rotating rod; 408. rubber pad; 409. fixing clamping plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-4 The utility model provides a portable non-methane total hydrocarbon sampler, including a box body 1, a first connecting pipe 7 is fixedly connected to the top of one side of the box body 1, one end of the first connecting pipe 7 is fixedly connected to a hose 8, one end of the hose 8 is fixedly provided with a sampling gun 9, a first limiting ring 10 is fixedly connected to the middle of one side of the box body 1, one side of the first limiting ring 10 is connected to a second limiting ring 11 through a hinge, the sampling gun 9 is fixedly arranged between the first limiting ring 10 and the second limiting ring 11, the first limiting ring 10 and the second limiting ring 11 limit the position of the sampling gun 9, a storage mechanism 4 is provided on one side of the box body 1, a partition 2 is fixedly connected to the middle of the box body 1, a fixing groove 3 is provided at the bottom of the other side of the box body 1, a vacuum pump 6 is installed in the fixing groove 3, an air inlet end of the vacuum pump 6 is fixedly connected to a second connecting pipe 5, one end of the second connecting pipe 5 is fixedly connected to the top of the other side of the box body 1, the vacuum pump 6 makes the interior of the box body 1 in a vacuum state, so that a pressure difference is formed between the sampling bag in the box body 1 and the outside world for sampling;

[0024] Two limiting plates 12 are fixedly provided at the bottom of the sampling gun 9. The two limiting plates 12 are respectively located above and below the first limiting ring 10. The limiting plates 12 further limit the sampling gun 9 to prevent the sampling gun 9 from moving up and down and prevent the sampling gun 9 from falling;

[0025] A first fixing block 13 is fixedly connected to the middle of one side of the first limiting ring 10, a second fixing block 14 is fixedly connected to the middle of one side of the second limiting ring 11, a first screw rod 15 is threadedly connected to one side of the second fixing block 14, a first threaded hole 16 is opened in the middle of one side of the first fixing block 13, one end of the first screw rod 15 passes through the second fixing block 14 and is threadedly connected to the first threaded hole 16, and the first screw rod 15 is rotated to facilitate the connection between the first limiting ring 10 and the second limiting ring 11, so as to facilitate the storage of the sampling gun 9;

[0026] Universal wheels 17 are fixedly provided at the four corners of the bottom of the box body 1, and the universal wheels 17 can drive the box body 1 to move easily. L-shaped fixing rods 18 are fixedly connected to both sides of the bottom of the back of the box body 1. The outside of the L-shaped fixing rod 18 is slidably connected to a connecting tube 19. The tops of the two connecting tubes 19 are fixedly connected to push plates 20. Pushing the push plates 20 facilitates pushing the box body 1, thereby facilitating the movement of the sampler.

[0027] A second screw rod 21 is threadedly connected to the bottom of one side of the connecting tube 19, and a second threaded hole 22 is provided at the top and the bottom of one side of the L-shaped fixing rod 18. One end of the second screw rod 21 passes through one side of the connecting tube 19 and is threadedly connected to the second threaded hole 22. The threaded connection between the second screw rod 21 and the second threaded hole 22 facilitates the change of the height of the connecting tube 19, thereby facilitating the reduction of the space occupied by the sampler and facilitating carrying.

[0028] Specifically, first place the sampling gun 9 in the first limiting ring 10 so that the first limiting ring 10 is located between the two limiting plates 12, then rotate the second limiting ring 11 so that the sampling gun 9 is located between the first limiting ring 10 and the second limiting ring 11, and then rotate the first screw 15 so that the first screw 15 is threadedly connected to the first threaded hole 16, and connect the first limiting ring 10 to the second limiting ring 11, so as to fix the sampling gun 9 on one side of the box body 1, and store the sampling gun 9 for carrying.

[0029] Embodiment 2:

[0030] The storage mechanism 4 includes a fixed plate 401 and a connecting plate 402. The fixed plate 401 is fixedly arranged on one side of the box body 1. The top and bottom of the fixed plate 401 are slidably connected with guide rods 403. One end of the two guide rods 403 is fixedly connected with a movable clamping plate 404. The middle part of the fixed plate 401 is threadedly connected with a third screw rod 405. One end of the third screw rod 405 is rotatably connected with the middle part of one side of the movable clamping plate 404 through a bearing. The third screw rod 405 rotates to drive the movable clamping plate 404 to move. The guide rod 403 limits the position of the movable clamping plate 404 to prevent the movable clamping plate 404 from tilting. The connecting plate 402 is fixedly arranged on one side of the box body 1. One side of the connecting plate 402 is fixedly connected with a fixed clamping plate 409. Under the limit of the movable clamping plate 404 and the fixed clamping plate 409, the hose 8 is stored.

[0031] The other end of the guide rod 403 is fixedly connected to an anti-slip block 406, which prevents the guide rod 403 from detaching from the fixed plate 401. The other end of the third screw rod 405 is fixedly connected to the outer side thereof. A plurality of rotating rods 407 are provided, which are equidistantly arranged on the outer side of the other end of the third screw rod 405. The plurality of rotating rods 407 facilitate force application, and the third screw rod 405 can be easily rotated.

[0032] One side of the fixed clamping plate 409 and the other side of the movable clamping plate 404 are both fixedly connected with a rubber pad 408, and the rubber pad 408 protects the hose 8 to prevent the hose 8 from being damaged;

[0033] Specifically, the hose 8 is first folded, and then the folded hose 8 is placed between the movable clamping plate 404 and the fixed clamping plate 409, and then the rotating rod 407 is rotated to rotate the third screw 405, thereby driving the movable clamping plate 404 to move, and the movable clamping plate 404 is moved toward the fixed clamping plate 409 until the hose 8 is limited between the fixed clamping plate 409 and the movable clamping plate 404, and the hose 8 is stored.

[0034] When in use, first start the vacuum pump 6 to keep the interior of the box body 1 in a vacuum state, thereby forming a pressure difference between the sampling bag in the box body 1 and the outside world, and sampling is performed through the sampling gun 9. After the sampling is completed, the sampling gun 9 is placed in the first limiting ring 10 so that the first limiting ring 10 is located between the two limiting disks 12, and then the second limiting ring 11 is rotated so that the sampling gun 9 is located between the first limiting ring 10 and the second limiting ring 11, and then the first screw 15 is rotated so that the first screw 15 is threadedly connected with the first threaded hole 16, and the first limiting ring 10 is connected with the second limiting ring 11, so that the sampling gun 9 is fixed to one side of the box body 1, and the sampling gun 9 is stored for carrying;

[0035] Then, the hose 8 is folded and placed between the movable clamping plate 404 and the fixed clamping plate 409. Then, the rotating rod 407 is rotated to rotate the third screw rod 405, thereby driving the movable clamping plate 404 to move, and the movable clamping plate 404 is moved toward the fixed clamping plate 409 until the hose 8 is limited between the fixed clamping plate 409 and the movable clamping plate 404, and the hose 8 is stored, thereby reducing the space occupied by the sampler for easy carrying.

[0036] Then rotate the second screw 21 to disengage the second threaded hole 22 at the bottom, pull the push plate 20 upward to raise the connecting tube 19, and then rotate the second screw 21 in the opposite direction to thread the second screw 21 into the second threaded hole 22 at the top to fix the position of the connecting tube 19, and then push the push plate 20 to push the sampler, thereby facilitating the staff to move the sampler.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable non-methane total hydrocarbon sampler, comprising a housing (1), characterized in that: A first connecting pipe (7) is connected to the top of one side of the box body (1), one end of the first connecting pipe (7) is connected to a hose (8), one end of the hose (8) is provided with a sampling gun (9), a first limiting ring (10) is connected to the middle of one side of the box body (1), one side of the first limiting ring (10) is connected to a second limiting ring (11) through a hinge, and the sampling gun (9) is arranged between the first limiting ring (10) and the second limiting ring (11), a storage mechanism (4) is provided on one side of the box body (1), a partition (2) is connected to the middle of the box body (1), a fixing groove (3) is provided at the bottom of the other side of the box body (1), a vacuum pump (6) is installed in the fixing groove (3), the air inlet end of the vacuum pump (6) is connected to the second connecting pipe (5), one end of the second connecting pipe (5) is connected to the top of the other side of the box body (1).

2. A portable non-methane total hydrocarbon sampler according to claim 1, characterized in that: Two limiting plates (12) are provided at the bottom of the sampling gun (9), and the two limiting plates (12) are respectively located above and below the first limiting ring (10).

3. A portable non-methane total hydrocarbon sampler according to claim 2, characterized in that: A first fixing block (13) is connected to the middle of one side of the first limiting ring (10), a second fixing block (14) is connected to the middle of one side of the second limiting ring (11), a first screw rod (15) is threadedly connected to one side of the second fixing block (14), a first threaded hole (16) is provided in the middle of one side of the first fixing block (13), one end of the first screw rod (15) passes through the second fixing block (14) and is threadedly connected to the first threaded hole (16).

4. A portable non-methane total hydrocarbon sampler according to claim 1, characterized in that: Universal wheels (17) are provided at the four corners of the bottom end of the box body (1), and L-shaped fixing rods (18) are connected to both sides of the bottom of the back of the box body (1). The outside of the L-shaped fixing rod (18) is slidably connected to a connecting tube (19), and the top ends of the two connecting tubes (19) are connected to push plates (20).

5. A portable non-methane total hydrocarbon sampler according to claim 4, characterized in that: A second screw rod (21) is threadedly connected to the bottom of one side of the connecting tube (19); a second threaded hole (22) is provided at the top of one side and the bottom of one side of the L-shaped fixing rod (18); one end of the second screw rod (21) passes through one side of the connecting tube (19) and is threadedly connected to the second threaded hole (22).

6. A portable non-methane total hydrocarbon sampler according to claim 1, characterized in that: The storage mechanism (4) comprises a fixed plate (401) and a connecting plate (402); the fixed plate (401) is arranged on one side of the box body (1); the top and bottom of the fixed plate (401) are slidably connected to guide rods (403); one end of the two guide rods (403) is connected to a movable clamping plate (404); the middle part of the fixed plate (401) is threadedly connected to a third screw rod (405); one end of the third screw rod (405) is rotatably connected to the middle part of one side of the movable clamping plate (404) through a bearing; the connecting plate (402) is arranged on one side of the box body (1); one side of the connecting plate (402) is connected to a fixed clamping plate (409).

7. A portable non-methane total hydrocarbon sampler according to claim 6, characterized in that: The other end of the guide rod (403) is connected to an anti-dropping block (406), and the other end of the third screw rod (405) is connected to a rotating rod (407) on its outer side.

8. A portable non-methane total hydrocarbon sampler according to claim 6, characterized in that: One side of the fixed clamping plate (409) and the other side of the movable clamping plate (404) are both connected with a rubber pad (408).

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