Tail gas sampling device for environmental protection detection

Abstract

The utility model discloses a tail gas sampling device for environmental protection detection, which comprises a detector body and a sampling tube connected with the detector body, the other end of the sampling tube is connected with a fixed cylinder, the other end of the fixed cylinder is connected with an elastic connecting cylinder, the other end of the connecting cylinder is connected with an elastic sealing ring, and the elastic sealing ring is connected with the fixed cylinder. The sealing ring and the connecting cylinder are both made of high-temperature-resistant materials, the sealing ring is connected with an opening assembly in the circumferential direction, and hinge rods are arranged between the opening assembly and the fixing cylinder in a hinged mode. Compared with the prior art, the utility model has the advantages that the sampling pipe and the exhaust pipe can be sealed and matched conveniently, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection detection, in particular to an exhaust gas sampling device for environmental protection detection. Background Art

[0002] With the increasing use of vehicles, fuel vehicles will emit exhaust gas during driving. If the exhaust gas is not treated, it will be directly discharged into the atmosphere. The harmful substances contained in it, such as carbon monoxide, nitrogen oxides, sulfur oxides, hydrocarbons and particulate matter, will pollute the atmosphere, affect air quality and cause harm to human health. In order to confirm whether the vehicle exhaust gas has been treated and detect whether the treatment meets the standards, it is usually necessary to sample the exhaust gas;

[0003] Existing exhaust gas sampling devices for environmental testing usually simply hang the sampling tube on the exhaust pipe. The sampling tube and the exhaust pipe are not sealed. As the detector body extracts the exhaust gas, the surrounding air is also inhaled, thereby reducing the concentration of each component in the exhaust gas, making the test result inaccurate. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the sampling tube and the exhaust pipe are not sealed together, and the surrounding air is also sucked in during the process of the detector body extracting the exhaust gas, thereby reducing the concentration of each component in the exhaust gas and affecting the accuracy of the detection result.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: an exhaust gas sampling device for environmental protection detection, including a detector body and a sampling tube connected to the detector body, the other end of the sampling tube is connected to a fixed tube, the other end of the fixed tube is connected to an elastic connecting tube, the other end of the connecting tube is connected to an elastic sealing ring, the sealing ring and the connecting tube are both made of high temperature resistant material, the sealing ring is circumferentially connected to a support assembly, and the support assembly and the fixed tube are respectively hinged with hinge rods.

[0008] Furthermore, the sampling tube is a corrugated structure, so that the sampling tube can be expanded and contracted to a certain extent, thereby improving the flexibility of the sampling tube during operation.

[0009] Furthermore, the expansion component includes connecting blocks evenly connected to the circumference of the sealing ring, and the first magnet and the second magnet are respectively connected on both sides of the connecting block. The second magnet is an electromagnet, and the second magnet repels the first magnet when energized. A mounting seat is connected to the top of the connecting block, and a spring ring is commonly sleeved on the outer periphery of the mounting seat. By energizing the second magnet, the second magnet repels the first magnet after energization, thereby driving the distance between the connecting blocks to increase, the spring ring stretches and accumulates force, and the connecting block drives the sealing ring to expand, thereby facilitating the sleeve connection of the exhaust pipe.

[0010] Furthermore, an arc groove is connected to the mounting seat, and the arc groove cooperates with the spring ring to facilitate stable installation of the spring ring. The coordination of the spring ring and the sealing ring allows the sealing ring to expand evenly.

[0011] Furthermore, a hinge seat is connected to the middle of one end of the connecting block near the hinge rod, and the connecting block is hinged to the hinge rod through the hinge seat. The matching setting of the hinge rod facilitates the sealing ring to always be coaxial with the fixing tube during the expansion process.

[0012] Furthermore, a plurality of rubber protrusions are evenly distributed and connected around the inner wall of the sealing ring. The rubber protrusions are made of high temperature resistant material, which is convenient for increasing the friction between the sealing ring and the exhaust pipe and facilitating a stable connection.

[0013] 3. Beneficial Effects

[0014] The advantages of the utility model compared with the prior art are:

[0015] The coordinated arrangement of the sampling tube, the fixed tube, the connecting tube, the sealing ring, the expansion assembly and the hinge rod makes it convenient to drive the sealing ring to expand by starting the expansion assembly, so that the sealing ring can be conveniently sleeved on exhaust pipes of different sizes. Then, through the sealing coordination between the sealing ring and the exhaust pipe, it is avoided that the concentration of each component in the exhaust gas is reduced due to the inhalation of air during exhaust sampling, thereby affecting the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of an exhaust gas sampling device for environmental protection detection.

[0017] Figure 2 The utility model is a right-side structural schematic diagram of an exhaust gas sampling device for environmental protection detection.

[0018] Figure 3 The utility model is a schematic diagram of the main cross-section structure of an exhaust gas sampling device for environmental protection detection.

[0019] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of A.

[0020] As shown in the figure: 1. Sampling tube, 2. Fixed tube, 3. Connecting tube, 4. Sealing ring, 5. Hinge rod, 6. Connecting block, 7. First magnet, 8. Second magnet, 9. Mounting seat, 10. Spring ring, 11. Arc groove, 12. Articulated seat, 13. Rubber protrusion. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] Combined with Figure 1 , an exhaust gas sampling device for environmental detection, comprising a detector body and a sampling tube 1 connected to the detector body, the sampling tube 1 is a corrugated structure, the other end of the sampling tube 1 is connected with a fixed tube 2, the other end of the fixed tube 2 is connected with an elastic connecting tube 3, the other end of the connecting tube 3 is connected with an elastic sealing ring 4, the inner wall of the sealing ring 4 is circumferentially evenly connected with a plurality of rubber protrusions 13, the rubber protrusions 13 are made of high temperature resistant material, the sealing ring 4 and the connecting tube 3 are both made of high temperature resistant material, and the sealing ring 4 is circumferentially connected with a support component;

[0024] Through the above structure, the sealing ring 4 is driven to expand by starting the expansion assembly, so that the sealing ring 4 can be conveniently sleeved on exhaust pipes of different sizes. The rubber protrusion 13 is made of high temperature resistant material, which is convenient for increasing the friction between the sealing ring 4 and the exhaust pipe, and convenient for stable connection.

[0025] Combined with Figure 2 , Figure 3 and Figure 4 The expansion assembly includes a connection block 6 evenly connected to the circumference of the sealing ring 4, and the first magnet 7 and the second magnet 8 are connected to the two sides of the connection block 6 respectively. The second magnet 8 is an electromagnet. After the second magnet 8 is energized, it repels the first magnet 7. The top of the connection block 6 is connected to a mounting seat 9, and the outer periphery of the mounting seat 9 is jointly sleeved with a spring ring 10. The mounting seat 9 is connected to an arc groove 11, and the arc groove 11 cooperates with the spring ring 10;

[0026] Through the above structure, the expansion of the sealing ring 4 is controlled by controlling the second magnet 8 to be energized, and the spring ring 10 and the sealing ring 4 are arranged in coordination so that the sealing ring 4 can expand evenly;

[0027] Embodiment 2

[0028] Based on the first embodiment, combined with the attached Figure 1 and Figure 3 The connecting block 6 is connected to a hinge seat 12 at the middle of one end of the hinge rod 5, and the connecting block 6 is hinged to the hinge rod 5 through the hinge seat 12;

[0029] Through the above structure, the hinge rod 5 is arranged so that the sealing ring 4 is always coaxial with the fixed tube 2 during the expansion process, and then handles are connected on both sides of the fixed tube 2 to facilitate the alignment of the sealing ring 4 and the exhaust pipe, and to facilitate the sealing connection and installation.

[0030] The specific method of use is as follows: by energizing the second magnet 8, the second magnet 8 repels the first magnet 7 after being energized, thereby driving the distance between the connecting blocks 6 to increase, the spring coil 10 stretches and stores force, and the connecting block 6 drives the sealing ring 4 to expand. The arc groove 11 cooperates with the spring coil 10 to facilitate the stable installation of the spring coil 10 and the sealing ring 4 to be sleeved on exhaust pipes of different sizes. The sampling tube 1 is a corrugated structure, so that the sampling tube 1 can be stretched to a certain extent, which is convenient for improving the flexibility of the sampling tube 1 during operation. The sealing ring 4 is sleeved on the outside of the exhaust pipe and the power is stopped. Under the resetting action of the spring coil 10 and the sealing ring 4, the sealing ring 4 cooperates with the seal of the exhaust pipe to avoid the concentration of each component in the exhaust gas being reduced due to the inhalation of air during exhaust sampling, thereby affecting the accuracy of the detection result.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] 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.

[0033] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An exhaust gas sampling device for environmental detection, comprising a detector body and a sampling tube (1) connected to the detector body, characterized in that: The other end of the sampling tube (1) is connected to a fixed tube (2), the other end of the fixed tube (2) is connected to an elastic connecting tube (3), the other end of the connecting tube (3) is connected to an elastic sealing ring (4), the sealing ring (4) and the connecting tube (3) are both made of high temperature resistant material, the sealing ring (4) is circumferentially connected to a spreading component, and a hinge rod (5) is respectively hinged between the spreading component and the fixed tube (2).

2. The exhaust gas sampling device for environmental protection detection according to claim 1, characterized in that: The sampling tube (1) is a corrugated structure.

3. The exhaust gas sampling device for environmental protection detection according to claim 1, characterized in that: The expansion assembly comprises a connection block (6) uniformly connected to the circumference of the sealing ring (4); a first magnet (7) and a second magnet (8) are respectively connected to the two sides of the connection block (6); the second magnet (8) is an electromagnet, and the second magnet (8) repels the first magnet (7) when energized; a mounting seat (9) is connected to the top of the connection block (6); and a spring ring (10) is sleeved on the outer circumference of the mounting seat (9).

4. The exhaust gas sampling device for environmental protection detection according to claim 3 is characterized in that: The mounting seat (9) is connected with an arc-shaped groove (11), and the arc-shaped groove (11) cooperates with the spring ring (10).

5. The exhaust gas sampling device for environmental protection detection according to claim 3 is characterized in that: The connecting block (6) is connected to a hinge seat (12) at the middle of one end of the hinge rod (5), and the connecting block (6) is hinged to the hinge rod (5) via the hinge seat (12).

6. The exhaust gas sampling device for environmental protection detection according to claim 1, characterized in that: The inner wall of the sealing ring (4) is evenly connected and provided with a plurality of rubber protrusions (13) in the circumferential direction, and the rubber protrusions (13) are made of a high temperature resistant material.

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