Motor vehicle emission detection sampling device

Abstract

The invention provides a motor vehicle emission detection sampling device, and relates to the technical field of sampling devices.The motor vehicle emission detection sampling device comprises a sample storage box, a conveying hose is arranged on one side of the sample storage box, a sampling pipe is arranged on one side of the conveying hose, a holding pipe is arranged on the sampling pipe, a positioning assembly is arranged on the holding pipe, and a plurality of springs are arranged on the positioning assembly; an annular groove is formed in one side of the holding pipe, a rotating ring is rotationally arranged in the annular groove, and a plurality of first anti-skid lines are arranged on the rotating ring, so that the sampling pipe can be effectively prevented from accidentally moving in the sampling process, and the accuracy of sampling data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, and in particular to a motor vehicle emission detection sampling device. Background Art

[0002] The motor vehicle emission detection sampling device is a key equipment for collecting motor vehicle exhaust gas samples. It ensures the accuracy of the collection process and the integrity of the samples through specific design and material requirements. It is mainly used in motor vehicle exhaust emission detection to measure the concentration of harmful substances in the exhaust gas, such as CO, NOx, HC and particulate matter, etc., to provide data support for environmental inspections and scientific research. It is widely used in motor vehicle emission inspection agencies to ensure that vehicle emissions meet environmental protection standards.

[0003] As disclosed in a Chinese patent: A sampling probe for detecting pollutants emitted by motor vehicles, application number: CN201521092909.0, comprising an insulation unit and a probe unit connected to each other, the insulation unit comprising a joint, an inner tube and a connecting tube connected in sequence, the insulation unit is connected to the probe unit through a connecting tube, the joint, the inner tube and the connecting tube are interconnected to form a sampling gas channel, the outer wall of the sampling gas channel is provided with an insulation device; the insulation device comprises a heating layer and an insulation layer wrapped around the outer wall of the inner tube in sequence from the inside to the outside, one end of the heating layer and the insulation layer is connected to the joint, and the other end is connected to the connecting tube, by adding an insulation device to the outer wall of the inner tube, the temperature change of the gas to be tested during the flow through the sampling gas channel can be reduced, thereby preventing the generation of condensed water and the deposition of pollutants, and at the same time, the fixing method of the sampling probe is suitable for a variety of occasions.

[0004] However, in the above technical solution, when it is necessary to sample the exhaust gas of a motor vehicle, the sampling tube needs to be inserted into the exhaust pipe of the running vehicle. When the vehicle is running, vibration and bumps will occur. At present, the sampling tube is usually directly inserted into the exhaust pipe of the motor vehicle and then fixed by gravity. There is no effective fixing method. Therefore, the sampling tube is prone to accidental movement due to vibration, bumps or improper operation of the vehicle, resulting in the deviation of the sampling position, which seriously affects the accuracy and reliability of the sampling data. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a motor vehicle emission detection sampling device, which can effectively solve the problem in the background technology that when it is necessary to sample the motor vehicle exhaust gas, a sampling tube needs to be inserted into the exhaust pipe of the running vehicle, and the vehicle will generate vibration and bumps when running. At present, the sampling tube is usually directly inserted into the exhaust pipe of the motor vehicle and then fixed by gravity without an effective fixing method. Therefore, the sampling tube is prone to accidental movement due to vibration, bumps or improper operation during vehicle operation, resulting in a deviation of the sampling position, which seriously affects the accuracy and reliability of the sampling data.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a motor vehicle emission detection sampling device, including a sample storage box, a delivery hose is provided on one side of the sample storage box, a sampling tube is provided on one side of the delivery hose, a grip tube is provided on the sampling tube, a positioning assembly is provided on the grip tube, a plurality of springs are provided on the positioning assembly, an annular groove is provided on one side of the grip tube, a rotating ring is rotatably provided in the annular groove, and a plurality of first anti-slip patterns are provided on the rotating ring.

[0007] Preferably, the sampling tube comprises a sampling tube base, a gas delivery groove is arranged on the sampling tube base, and a telescopic tube is arranged in the gas delivery groove.

[0008] Preferably, the inner wall surface of the gas delivery groove is provided with a first sealing layer and a first thread, and the outer wall surface of the telescopic tube is provided with a second sealing layer and a second thread.

[0009] Preferably, the delivery hose is fixedly connected to the sampling tube base.

[0010] Preferably, the first thread and the second thread are located between the first sealing layer and the second sealing layer.

[0011] Preferably, the positioning assembly is provided with an internal gear ring on the grip tube, the internal gear ring is meshed with a plurality of first gears, a rotating column is provided on the first gears, and a second gear is provided on one side of the rotating column.

[0012] Preferably, a rack is meshedly provided on one side of the second gear, a sliding column is fixedly provided on the rack, a top block is provided on one side of the sliding column, and a plurality of second anti-slip grooves are provided on the top block.

[0013] Preferably, the inner gear ring is fixedly connected to the rotating ring.

[0014] Preferably, the sliding column is slidably connected to the grip tube.

[0015] Preferably, two sides of the spring are fixedly connected to the grip tube and the top block respectively.

[0016] The present invention provides a motor vehicle emission detection sampling device, which has the following beneficial effects:

[0017] (1) When sampling is required, the present invention first rotates the telescopic tube to adjust the length of the sampling tube according to the depth of the exhaust pipe of the motor vehicle, then holds the grip tube, and then rotates the rotating ring, through which the inner gear ring rotates, the inner gear ring drives the first gear to rotate, the first gear drives the rotating column to rotate, the rotating column drives the second gear to rotate, the second gear drives the rack to move, the rack drives the sliding column to move, the sliding column drives the top block to move, so that the top block moves toward the grip tube, the spring is deformed, and then the top block is placed in the exhaust pipe of the motor vehicle, and then the rotation of the rotating ring is released, the spring rebounds, and the top block moves away from the grip tube, the top block is used to squeeze the inner wall of the exhaust pipe of the motor vehicle, and the second anti-skid pattern is used to increase the friction force, so that a part of the grip tube is fixed in the exhaust pipe of the motor vehicle, and then the sampling tube is fixed in the exhaust pipe of the motor vehicle through the grip tube, and then the sampling gas is sent to the sample storage box through the sampling tube and the conveying hose to complete the sampling, which can effectively prevent the sampling tube from accidentally moving during the sampling process and improve the accuracy of the sampling data.

[0018] (2) When the length of the sampling tube needs to be adjusted according to the depth of the exhaust pipe of the motor vehicle, the telescopic tube is first rotated, and then the telescopic tube is moved toward or away from the conveying hose through the first thread and the second thread, thereby adjusting the length of the sampling tube and expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 3 It is a schematic diagram of the structure of the sampling tube in the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the positioning component in the present invention.

[0023] Among them, 1. sample storage box; 2. delivery hose; 3. sampling tube; 301. sampling tube base; 302. gas delivery trough; 303. telescopic tube; 304. first sealing layer; 305. first thread; 306. second sealing layer; 307. second thread; 4. grip tube; 5. positioning assembly; 501. inner gear ring; 502. first gear; 503. rotating column; 504. second gear; 505. rack; 506. sliding column; 507. top block; 508. second anti-slip pattern; 6. spring; 7. ring groove; 8. rotating ring; 9. first anti-slip pattern. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a motor vehicle emission detection sampling device, including a sample storage box 1, a delivery hose 2 is provided on one side of the sample storage box 1, a sampling tube 3 is provided on one side of the delivery hose 2, a gripping tube 4 is provided on the sampling tube 3, a positioning assembly 5 is provided on the gripping tube 4, a plurality of springs 6 are provided on the positioning assembly 5, an annular groove 7 is provided on one side of the gripping tube 4, a rotating ring 8 is rotatably provided in the annular groove 7, and a plurality of first anti-slip patterns 9 are provided on the rotating ring 8.

[0026] like Figure 3 As shown, the sampling tube 3 includes a sampling tube base 301, a gas delivery groove 302 is provided on the sampling tube base 301, and a telescopic tube 303 is provided in the gas delivery groove 302;

[0027] The inner wall surface of the gas delivery groove 302 is provided with a first sealing layer 304 and a first thread 305 , and the outer wall surface of the telescopic tube 303 is provided with a second sealing layer 306 and a second thread 307 .

[0028] Through the above technical solution, when it is necessary to adjust the length of the sampling tube 3 according to the depth of the exhaust pipe of the motor vehicle, first rotate the telescopic tube 303, and then move the telescopic tube 303 toward or away from the conveying hose 2 through the first thread 305 and the second thread 307, so as to adjust the length of the sampling tube 3, and use the first sealing layer 304 and the second sealing layer 306 to seal the gap between the sampling tube base 301 and the telescopic tube 303 when conveying the sampling gas.

[0029] like Figure 4 As shown, the positioning assembly 5 is provided with an inner gear ring 501 on the grip tube 4, and the inner gear ring 501 is meshed with a plurality of first gears 502, a rotating column 503 is provided on the first gear 502, and a second gear 504 is provided on one side of the rotating column 503;

[0030] A rack 505 is meshed with one side of the second gear 504 , a sliding post 506 is fixedly disposed on the rack 505 , a top block 507 is disposed on one side of the sliding post 506 , and a plurality of second anti-slip grooves 508 are disposed on the top block 507 .

[0031] Through the above technical solution, when the sampling tube 3 needs to be fixed in the exhaust pipe of the motor vehicle, the inner gear ring 501 is first rotated by the rotating ring 8, and the inner gear ring 501 drives the first gear 502 to rotate, the first gear 502 drives the rotating column 503 to rotate, the rotating column 503 drives the second gear 504 to rotate, the second gear 504 drives the rack 505 to move, the rack 505 drives the sliding column 506 to move, the sliding column 506 drives the top block 507 to move, so that the top block 507 moves toward the grip tube 4, the spring 6 is deformed, and then the top block 507 is put into the exhaust pipe of the motor vehicle, and then the rotation of the rotating ring 8 is released, the spring 6 rebounds, and the top block 507 moves away from the grip tube 4, the top block 507 is used to squeeze the inner wall of the motor vehicle exhaust pipe, and the second anti-slip pattern 508 is used to increase the friction force, so that a part of the grip tube 4 is fixed in the exhaust pipe of the motor vehicle, and then the sampling tube 3 is fixed in the exhaust pipe of the motor vehicle through the grip tube 4, so as to prevent the sampling tube 3 from accidentally moving during the sampling process and improve the accuracy of the sampling data.

[0032] Working principle:

[0033] When sampling is required, the telescopic tube 303 is first rotated to adjust the length of the sampling tube 3 according to the depth of the exhaust pipe of the motor vehicle, and then the grip tube 4 is held, and then the rotating ring 8 is rotated, and the inner gear ring 501 is rotated by the rotating ring 8, and the inner gear ring 501 drives the first gear 502 to rotate, and the first gear 502 drives the rotating column 503 to rotate, and the rotating column 503 drives the second gear 504 to rotate, and the second gear 504 drives the rack 505 to move, and the rack 505 drives the sliding column 506 to move, and the sliding column 506 drives the top block 507 to move, so that the top block 507 moves toward the grip tube 4, and the spring 6 is deformed, and then the top block 507 is placed in the exhaust pipe of the motor vehicle. Subsequently, the rotation of the rotating ring 8 is released, and the spring 6 rebounds, so that the top block 507 moves away from the grip tube 4, and the top block 507 is used to squeeze the inner wall of the exhaust pipe of the motor vehicle, and the second anti-slip pattern 508 is used to increase the friction force, so that a part of the grip tube 4 is fixed in the exhaust pipe of the motor vehicle, and then the sampling tube 3 is fixed in the exhaust pipe of the motor vehicle through the grip tube 4, and then the sampling gas is sent into the sample storage box 1 through the sampling tube 3 and the delivery hose 2 to complete the sampling. This can effectively prevent the sampling tube 3 from accidentally moving during the sampling process, thereby improving the accuracy of the sampling data.

[0034] Among them, when it is necessary to adjust the length of the sampling tube 3 according to the depth of the exhaust pipe of the motor vehicle, first rotate the telescopic tube 303, and then move the telescopic tube 303 toward or away from the conveying hose 2 through the first thread 305 and the second thread 307, so as to adjust the length of the sampling tube 3, and use the first sealing layer 304 and the second sealing layer 306 to seal the gap between the sampling tube base 301 and the telescopic tube 303 when conveying the sampling gas.

[0035] When the sampling tube 3 needs to be fixed in the exhaust pipe of the motor vehicle, the inner gear ring 501 is first rotated by the rotating ring 8, and the inner gear ring 501 drives the first gear 502 to rotate, and the first gear 502 drives the rotating column 503 to rotate, and the rotating column 503 drives the second gear 504 to rotate, and the second gear 504 drives the rack 505 to move, and the rack 505 drives the sliding column 506 to move, and the sliding column 506 drives the top block 507 to move, so that the top block 507 moves toward the grip tube 4, and the spring 6 is deformed, and then the top block 507 is put into the exhaust pipe of the motor vehicle, and then the rotation of the rotating ring 8 is released, and the spring 6 rebounds, so that the top block 507 moves away from the grip tube 4, and the top block 507 is used to squeeze the inner wall of the exhaust pipe of the motor vehicle, and the second anti-skid pattern 508 is used to increase the friction force, so that a part of the grip tube 4 is fixed in the exhaust pipe of the motor vehicle, and then the sampling tube 3 is fixed in the exhaust pipe of the motor vehicle through the grip tube 4, so as to prevent the sampling tube 3 from accidentally moving during the sampling process, and improve the accuracy of the sampling data.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A motor vehicle emission detection sampling device, comprising a sample storage box (1), characterized in that: A conveying hose (2) is arranged on one side of the sample storage box (1), a sampling tube (3) is arranged on one side of the conveying hose (2), a gripping tube (4) is arranged on the sampling tube (3), a positioning assembly (5) is arranged on the gripping tube (4), a plurality of springs (6) are arranged on the positioning assembly (5), an annular groove (7) is arranged on one side of the gripping tube (4), a rotating ring (8) is rotatably arranged in the annular groove (7), and a plurality of first anti-slip grooves (9) are arranged on the rotating ring (8).

2. A motor vehicle emission detection sampling device according to claim 1, characterized in that: The sampling tube (3) comprises a sampling tube base (301), a gas delivery groove (302) is arranged on the sampling tube base (301), and a telescopic tube (303) is arranged in the gas delivery groove (302).

3. A motor vehicle emission detection sampling device according to claim 2, characterized in that: The inner wall surface of the gas delivery groove (302) is provided with a first sealing layer (304) and a first thread (305), and the outer wall surface of the telescopic tube (303) is provided with a second sealing layer (306) and a second thread (307).

4. A motor vehicle emission detection sampling device according to claim 3, characterized in that: The delivery hose (2) is fixedly connected to the sampling tube base (301).

5. A motor vehicle emission detection sampling device according to claim 4, characterized in that: The first thread (305) and the second thread (307) are located between the first sealing layer (304) and the second sealing layer (306).

6. A motor vehicle emission detection sampling device according to claim 5, characterized in that: The positioning assembly (5) is provided with an inner tooth ring (501) on the grip tube (4); the inner tooth ring (501) is meshed with a plurality of first gears (502); a rotating column (503) is provided on the first gears (502); and a second gear (504) is provided on one side of the rotating column (503).

7. A motor vehicle emission detection sampling device according to claim 6, characterized in that: A rack (505) is meshed with one side of the second gear (504), a sliding column (506) is fixedly arranged on the rack (505), a top block (507) is arranged on one side of the sliding column (506), and a plurality of second anti-slip grooves (508) are arranged on the top block (507).

8. A motor vehicle emission detection sampling device according to claim 7, characterized in that: The inner gear ring (501) is fixedly connected to the rotating ring (8).

9. A motor vehicle emission detection sampling device according to claim 8, characterized in that: The sliding column (506) is slidably connected to the grip tube (4).

10. A motor vehicle emission detection sampling device according to claim 9, characterized in that: The two sides of the spring (6) are respectively fixedly connected to the grip tube (4) and the top block (507).

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