Motor vehicle tail gas sampling head

Abstract

The utility model discloses a motor vehicle tail gas sampling head, which relates to the technical field of motor vehicle tail gas and comprises a receiving tube, an output tube arranged on the upper portion of one side of the receiving tube, a support fixedly arranged on one side of the receiving tube, a supporting piece fixedly arranged on one side of the support, and a screw tube rotatably arranged on one side of the supporting piece. The motor vehicle tail gas sampling head comprises a screw tube, a stud is sleeved with the screw tube in a threaded mode, a rotary knob is fixedly arranged at one end of the screw tube, a connecting column is fixedly arranged at the end, away from the rotary knob, of the stud, a driving tube is fixedly sleeved with the outer surface of the connecting column, and a connecting rod is rotationally arranged on the outer surface of the driving tube. The opening and closing of the clamping plate can be conveniently controlled through an adjusting mechanism consisting of the knob, the screw tube, the stud and the like, so that the sampling head can be quickly mounted and dismounted on the exhaust pipe of the motor vehicle, the operation is simple and convenient, the working efficiency is improved, and the fixing requirements of exhaust pipes with different pipe diameters can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor vehicle exhaust technology field, concretely is a motor vehicle exhaust sampling head. BACKGROUND

[0002] Motor vehicle exhaust refers to the exhaust gas discharged from the exhaust pipe after the fuel combustion of motor vehicle, which is complex and harmful, containing carbon monoxide, carbon hydrogen, nitrogen oxide and particulate matter, etc., which is not only the accomplice of haze and acid rain formation, but also causes damage to human health in many aspects, from respiratory discomfort to increased cardiovascular pressure, even to the risk of cancer, and the analysis and research on motor vehicle exhaust need to use the motor vehicle sampling head.

[0003] However, the prior art still has the following problems:

[0004] The motor vehicle exhaust sampling head of the prior art is mostly troublesome when connected with the exhaust pipe, and the installation of the sampling head and the fixing mode of the exhaust pipe are often single and laborious, usually adopting simple clamps or bolt connection, which needs to use special tools for operation, increasing the complexity of operation, and in actual use scene, especially in some limited space or harsh environment, it is extremely inconvenient to use tools for installation and disassembly, consuming a lot of time and labor cost.

[0005] In view of the above problems, the inventor proposes a motor vehicle exhaust sampling head to solve the above problems. UTILITY MODEL CONTENTS

[0006] In order to solve the problem that the motor vehicle exhaust sampling head is troublesome when connected with the exhaust pipe, the utility model aims to provide a motor vehicle exhaust sampling head.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme: a motor vehicle exhaust sampling head, comprising a receiving pipe, the receiving pipe is provided with an output pipe on one side of the upper part, the receiving pipe is fixedly provided with a support on one side, the support is fixedly provided with a supporting piece on one side, the supporting piece is rotatably provided with a screw pipe on one side, and the screw pipe is threadedly sleeved with a stud, one end of the screw pipe is fixedly provided with a knob, the other end of the stud away from the knob is fixedly provided with a connecting column, the outer surface of the connecting column is fixedly sleeved with a driving pipe, the outer surface of the driving pipe is rotatably provided with a connecting rod, and one end of the connecting rod away from the driving pipe is rotatably provided with a supporting rod, the other end of the supporting rod is rotatably connected with the support, the connecting rod and the supporting rod are all provided with three, and the three connecting rods and the three supporting rods are annularly distributed, the other end of the supporting rod is rotatably provided with a clamping plate.

[0008] Preferably, an inner disc is fixedly arranged in the receiving tube, a gas conveying pipe is communicated between the receiving tube and the output pipe, the gas conveying pipe is made of soft material, four gas conveying pipes are arranged in a ring shape, and one end of the gas conveying pipe penetrates through the receiving tube and is fixedly provided with an input hopper.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] 1、The adjusting mechanism composed of knobs, screw pipes, screw posts and the like can conveniently control the opening and closing of the clamping plate, thereby realizing the quick installation and dismounting of the sampling head on the exhaust pipe of the motor vehicle, and improving the working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0012] Figure 1 It is the overall structure schematic diagram of the utility model.

[0013] Figure 2 It is the overall structure schematic diagram of the utility model support.

[0014] Figure 3 It is the explosion drawing of the screw pipe section and the support and its related structure of the utility model.

[0015] Figure 4 It is the explosion drawing of the receiving tube section and the inner disc structure of the utility model.

[0016] In the drawing: 1, receiving tube;11, inner disc;12, hopper-shaped groove;13, guide block;2, output pipe;21, gas conveying pipe;22, input hopper;3, support;31, support;32, screw pipe;33, knob;34, screw post;35, connecting column;36, driving pipe;37, connecting rod;38, support rod;39, clamping plate;310, limiting piece;311, limiting block;312, limiting groove. DETAILED DESCRIPTION

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figures 1-3 As shown, this utility model provides a vehicle exhaust gas sampling head, including a receiving tube 1. An output tube 2 is provided on the upper part of one side of the receiving tube 1. An external threaded tube is fixed on the output tube 2 for connecting to monitoring equipment. A bracket 3 is fixed on one side of the receiving tube 1. The bracket 3 provides a stable mounting base and support frame for the entire sampling head's auxiliary structure. Its strength and stability play a crucial role in the normal operation of the sampling head under various working conditions. A support member 31 is fixed on one side of the bracket 3. A screw tube 32 is rotatably provided on one side of the support member 31, and a stud 34 is threaded onto the internal thread of the screw tube 32. A knob 33 is fixed on one end of the screw tube 32. A connecting post 35 is fixed on the end of the stud 34 away from the knob 33. A through-hole is opened on one side of the support member 31. The outer surface of the connecting post 35 is movably fitted into the through-hole. A drive tube 36 is fixedly sleeved on the outer surface of the connecting post 35. The device is equipped with a connecting rod 37, and a support rod 38 is rotatably mounted on the end of the connecting rod 37 away from the drive tube 36. There are three connecting rods 37 and three support rods 38, and the three connecting rods 37 and support rods 38 are arranged in a ring. One end of the support rod 38 is rotatably connected to the bracket 3, and the other end of the support rod 38 is rotatably mounted with a clamping plate 39. When the receiving tube 1 is inserted into the exhaust pipe, the knob 33 is turned, which drives the screw tube 32 to rotate. Since the screw tube 32 is threadedly connected to the stud 34, the connecting post 35 is movably fitted with the support member 31 through the through groove. When the screw tube 32 rotates, the stud 34 will move along the axial direction of the screw tube 32, thereby driving the connecting post 35 to move. The movement of the connecting post 35 drives the drive tube 36 to move. The drive tube 36 pushes the support rod 38 to rotate around its connection point with the bracket 3 through the connecting rod 37, thereby realizing the opening and closing action of the clamping plate 39. The sampling head can be fixed on the exhaust pipe of the motor vehicle or removed from the exhaust pipe.

[0019] A limiting member 310 is fixedly provided on the bracket 3. The outer surface of the connecting column 35 is in contact with the through groove. A limiting groove 312 is opened on the outer surface of the connecting column 35. A limiting block 311 is fixedly provided in the limiting member 310, and the limiting block 311 is locked in the corresponding limiting groove 312. The limiting block 311 and the limiting groove 312 cooperate to restrict the rotational freedom of the connecting column 35, so that the connecting column 35 will not rotate when it moves, thereby enabling stable cooperation for fixing work.

[0020] The inner disc 11 is fixedly arranged in the receiving pipe 1, and the inner disc 11 can not only enhance the internal structural strength of the receiving pipe 1, but also plays an important role in the collection and guidance of the exhaust gas. The receiving pipe 1 is communicated with the output pipe 2 through the gas conveying pipes 21, the gas conveying pipes 21 are made of soft material, and four gas conveying pipes 21 are arranged in a ring shape, and one end of the gas conveying pipe 21 penetrates through the receiving pipe 1 and is fixedly provided with the input hopper 22. The inner disc 11 is provided with the hopper-shaped groove 12 on one side, which is matched with the input hopper 22. After the motor vehicle exhaust gas enters the receiving pipe 1, it enters the output pipe 2 through the four ring-shaped gas conveying pipes 21. The gas conveying pipe 21 is made of soft material and can adapt to certain installation position changes. The exhaust gas enters the gas conveying pipe 21 from the input hopper 22, and the hopper-shaped groove 12 on the inner disc 11 can play a certain positioning and guiding role for the input hopper 22. The motor vehicle exhaust gas contains particulate matter and other impurities. If there is only one sampling channel, when there are too many particulate matters or other substances that may block the channel in the exhaust gas, the sampling channel is easy to be blocked, which affects the normal sampling. The design of the four gas conveying pipes 21 can reduce the risk of blockage and balance the pressure and flow, and improve the uniformity of sampling.

[0021] The inner disc 11 is fixedly provided with the guide block 13, and the guide block 13 on the inner disc 11 can guide and uniform the flow of the exhaust gas in the receiving pipe 1, so that the exhaust gas more smoothly enters the gas conveying pipe 21 and finally reaches the output pipe 2 for subsequent detection and analysis.

[0022] Working principle: insert the receiving pipe 1 into the exhaust pipe, rotate the knob 33, the knob 33 drives the spiral pipe 32 to rotate, since the spiral pipe 32 is threadedly connected with the screw column 34, the connecting column 35 is movably attached with the supporting piece 31 through the through slot, when the spiral pipe 32 rotates, the screw column 34 moves along the axial direction of the spiral pipe 32, and then drives the connecting column 35 to move, the movement of the connecting column 35 drives the driving pipe 36 to move, the driving pipe 36 drives the supporting rod 38 to rotate around the connecting point of the supporting rod 38 and the support 3 through the connecting rod 37, so as to realize the opening and closing action of the clamping plate 39, and the sampling head can be fixed on or removed from the exhaust pipe of the motor vehicle;

[0023] The limiting block 311 and the limiting slot 312 cooperate to limit the rotation freedom degree of the connecting column 35, so that the connecting column 35 does not rotate when moving, so that stable cooperation and fixing work can be carried out;

[0024] After the motor vehicle exhaust enters the receiving pipe 1, it enters the output pipe 2 through four annularly distributed gas conveying pipes 21, the gas conveying pipes 21 are made of soft material and can adapt to certain installation position changes, the exhaust enters the gas conveying pipe 21 from the input hopper 22, the hopper-shaped groove 12 on the inner disc 11 can play a certain positioning and guiding role on the input hopper 22, the motor vehicle exhaust contains particulate matters and other impurities, if there is only one sampling channel, when there are many particulate matters or the exhaust contains other substances that may block the channel, it is easy to cause the sampling channel to be blocked, affecting the normal sampling, designing four gas conveying pipes 21 can reduce the risk of blockage while balancing the pressure and flow, and improve the uniformity of sampling.

[0025] At the same time, the guide block 13 on the inner disc 11 can play a guiding and uniform flow role on the flow of the exhaust in the receiving pipe 1, so that the exhaust more smoothly enters the gas conveying pipe 21 and finally reaches the output pipe 2 for subsequent detection and analysis.

[0026] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A motor vehicle exhaust sampling probe comprising a receiving tube (1), characterized in that: The receiving pipe (1) is provided with an output pipe (2) on one side of the upper part, and a support (3) is fixedly arranged on one side of the receiving pipe (1), one side of the support (3) is fixedly provided with a supporting piece (31), one side of the supporting piece (31) is rotatably provided with a screw pipe (32), and the screw pipe (32) is threadedly sleeved with a stud (34), one end of the screw pipe (32) is fixedly provided with a knob (33), and one end of the stud (34) away from the knob (33) is fixedly provided with a connecting column (35), the outer surface of the connecting column (35) is fixedly sleeved with a driving pipe (36), the outer surface of the driving pipe (36) is rotatably provided with a connecting rod (37), and one end of the connecting rod (37) away from the driving pipe (36) is rotatably provided with a supporting rod (38), one end of the supporting rod (38) is rotatably connected with the support (3), and the other end of the supporting rod (38) is rotatably provided with a clamping plate (39).

2. A motor vehicle exhaust sampling probe according to claim 1, wherein: The receiving pipe (1) is fixedly provided with an inner disc (11), and a gas conveying pipe (21) is communicated between the receiving pipe (1) and the output pipe (2), one end of the gas conveying pipe (21) penetrates through the receiving pipe (1) and is fixedly provided with an input hopper (22), and one side of the inner disc (11) is provided with a hopper-shaped groove (12) matched with the input hopper (22).

3. A motor vehicle exhaust sampling probe as in claim 1, wherein: One side of the supporting piece (31) is provided with a through groove, and the outer surface of the connecting column (35) is movably attached to the through groove.

4. A motor vehicle exhaust sampling probe as in claim 1, wherein: The connecting rod (37) and the supporting rod (38) are both provided with three, and the three connecting rods (37) and the three supporting rods (38) are annularly distributed.

5. A motor vehicle exhaust sampling probe as in claim 1, wherein: The support (3) is fixedly provided with a limiting piece (310), and the outer surface of the connecting column (35) is movably attached to the through groove.

6. A motor vehicle exhaust sampling probe according to claim 5, wherein: The outer surface of the connecting column (35) is provided with a limiting groove (312), and the limiting piece (310) is fixedly provided with a limiting block (311) inside, and the limiting block (311) is clamped in the corresponding limiting groove (312).

7. A motor vehicle exhaust sampling probe as in claim 2 wherein: The gas conveying pipe (21) is made of soft material, and four gas conveying pipes (21) are provided, and the four gas conveying pipes (21) are annularly distributed.

8. A motor vehicle exhaust sampling probe according to claim 2, wherein: One side of the inner disc (11) is fixedly provided with a guide block (13).

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