Gas sampling device for waste gas detection

Abstract

The utility model discloses a gas sampling device for waste gas detection, which comprises a connecting pipe, both sides of the connecting pipe are fixedly provided with waste gas pipes through connecting flanges, the top of the connecting pipe is provided with a sealing assembly, the top of the sealing assembly is provided with a sampling assembly, the sealing assembly comprises a top block, and the top block is provided with a sampling assembly. A connecting block is fixedly mounted at the bottom of the top block, and the insertion pipe is inserted into the through hole. According to the gas sampling device for waste gas detection, through cooperative work of the connecting pipe, the sealing assembly and the sampling assembly, efficient waste gas sampling is achieved, a spring, a sealing block and other components in the sealing assembly can automatically open and seal a communicating groove when an insertion pipe is inserted and pulled out, the sealing performance of the device is effectively guaranteed, waste gas leakage is prevented, and the safety of the device is improved. Not only is the sampling accuracy ensured, but also the safety of the surrounding environment and operators is ensured.

Description

Technical Field

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

[0002] Traditional exhaust gas sampling devices often suffer from problems such as complex structure, inconvenient operation, and poor sealing performance. The complex structure leads to high installation and maintenance costs and a tendency to malfunction; the inconvenient operation makes the sampling process time-consuming and labor-intensive, reducing work efficiency.

[0003] Therefore, this utility model provides a gas sampling device for exhaust gas detection to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a gas sampling device for exhaust gas detection, thus solving the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas sampling device for waste gas detection, comprising a connecting pipe, with waste gas pipes fixedly installed on both sides of the connecting pipe via connecting flanges; a sealing assembly is provided at the top of the connecting pipe; a sampling assembly is provided at the top of the sealing assembly; the sealing assembly includes a top block; a connecting block is fixedly installed at the bottom of the top block; the connecting block is fixedly installed at the top of the connecting pipe; a through hole is provided between the top block, the connecting block, and the side wall of the connecting pipe; a sealing block is slidably connected inside the through hole; a connecting groove is provided between the inside of the connecting pipe and the through hole; the connecting groove connects the through hole and the inside of the connecting pipe; the sampling assembly includes an insertion tube; a connecting port is provided on the side of the insertion tube; the connecting port connects the inside of the insertion tube to the outside; the insertion tube is inserted into the through hole.

[0006] Preferably, a bottom plate is fixedly installed inside the through hole, and a spring is fixedly installed between the top of the bottom plate and the bottom of the sealing block, the spring being located inside the connection between the connecting groove and the through hole.

[0007] Preferably, a limiting ring is fixedly installed inside the through hole, the limiting ring is located above the sealing block, and the insertion tube passes through the inside of the limiting ring.

[0008] Preferably, a sampling tube is fixedly installed at the top of the insertion tube, and a sealing sheet is fixedly installed on the outside of the insertion tube, the sealing sheet being attached to the top connecting tube of the top block.

[0009] Preferably, a butterfly valve is fixedly installed at the connection between the sampling cylinder and the insertion tube, and the upper and lower sides of the butterfly valve are respectively connected to the inside of the sampling cylinder and the insertion tube.

[0010] Preferably, a piston block is slidably connected inside the sampling cylinder, a connecting rod is fixedly installed on the top of the piston block, a push plate is fixedly installed on the top of the connecting rod, and the push plate is located on the outside of the sampling cylinder.

[0011] Beneficial effects

[0012] This invention provides a gas sampling device for exhaust gas detection. Compared with the prior art, it has the following advantages:

[0013] 1. This gas sampling device for exhaust gas detection achieves efficient exhaust gas sampling through the coordinated work of the connecting pipe, sealing component, and sampling component. The spring, sealing block, and other components in the sealing component can automatically open and seal the connecting groove when the tube is inserted and pulled out, effectively ensuring the sealing performance of the device and preventing exhaust gas leakage. This not only ensures the accuracy of sampling but also protects the safety of the surrounding environment and operators.

[0014] 2. This gas sampling device for exhaust gas detection can complete sampling by inserting the tube into the through hole, opening the butterfly valve and pulling the push plate. After sampling, the tube can be pulled out and the sealing state can be quickly restored, which greatly improves work efficiency and reduces sampling time and labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the external structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the internal overall structure of this utility model;

[0018] Figure 3 This is the utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This is an enlarged cross-sectional view of the internal structure of the sampling process of this utility model.

[0020] In the diagram: 1. Connecting pipe; 2. Sealing assembly; 21. Top block; 22. Connecting block; 23. Through hole; 24. Bottom plate; 25. Spring; 26. Sealing block; 27. Limiting ring; 28. Connecting groove; 3. Sampling assembly; 31. Sampling cylinder; 32. Insertion tube; 33. Push plate; 34. Connecting rod; 35. Piston block; 36. Butterfly valve; 37. Sealing plate; 38. Connecting port; 4. Exhaust pipe; 5. Connecting flange. Detailed Implementation

[0021] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0022] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] Reference Figures 1 to 4 This application provides a gas sampling device for exhaust gas detection, including a connecting pipe 1. Exhaust gas pipes 4 are fixedly installed on both sides of the connecting pipe 1 via connecting flanges 5. A sealing component 2 is provided on the top of the connecting pipe 1, and a sampling component 3 is provided on the top of the sealing component 2. The sealing component 2 includes a top block 21, and a connecting block 22 is fixedly installed on the bottom of the top block 21. The connecting block 22 is fixedly installed on the top of the connecting pipe 1. A through hole 23 is provided between the top block 21, the connecting block 22, and the side wall of the connecting pipe 1. A sealing block 26 is slidably connected inside the through hole 23. A connecting groove 28 is provided between the inside of the connecting pipe 1 and the through hole 23, and the connecting groove 28 connects the through hole 23 and the inside of the connecting pipe 1. The sampling component 3 includes an insertion tube 32. A connecting port 38 is provided on the side of the insertion tube 32, and the connecting port 38 connects the inside of the insertion tube 32 to the outside. The insertion tube 32 is inserted into the through hole 23.

[0024] A bottom plate 24 is fixedly installed inside the through hole 23. A spring 25 is fixedly installed between the top of the bottom plate 24 and the bottom of the sealing block 26. The spring 25 is located inside the connection between the connecting groove 28 and the through hole 23. A limiting ring 27 is fixedly installed inside the through hole 23. The limiting ring 27 is located above the sealing block 26, and the insertion tube 32 passes through the inside of the limiting ring 27. A sampling cylinder 31 is fixedly installed on the top of the insertion tube 32. A sealing plate 37 is fixedly installed on the outside of the insertion tube 32 and fits against the top connecting pipe 1 of the top block 21. A butterfly valve 36 is fixedly installed at the connection between the sampling cylinder 31 and the insertion tube 32. The upper and lower sides of the butterfly valve 36 are respectively connected to the inside of the sampling cylinder 31 and the insertion tube 32. A piston block 35 is slidably connected inside the sampling cylinder 31. A connecting rod 34 is fixedly installed on the top of the piston block 35. A push plate 33 is fixedly installed on the top of the connecting rod 34 and is located on the outside of the sampling cylinder 31.

[0025] In this embodiment, the connecting pipe 1 is installed between the exhaust pipe 4 and the exhaust pipe 4 via the connecting flange 5. When it is necessary to detect and sample the exhaust gas, the insertion tube 32 is inserted into the through hole 23. After insertion, the sealing block 26 is squeezed downward and the spring 25 is compressed, so that the insertion tube 32 can be inserted into the through hole 23. At this time, the connecting groove 28 is no longer sealed. The exhaust gas inside the connecting pipe 1 enters the insertion tube 32 through the connecting groove 28 and the connecting port 38. The sealing plate 37 can ensure that the exhaust gas will not leak through the connection between the insertion tube 32 and the through hole 23. At this time, the butterfly valve 36 is opened. After opening, the connecting rod 34 is pulled outward by the push plate 33. The connecting rod 34 drives the piston block 35 to move up and down. The piston block 35 moves upward and can draw the exhaust gas into the sampling cylinder 31 through the insertion tube 32. After sampling, the butterfly valve 36 is closed, thus realizing the sampling of the exhaust gas.

[0026] After sampling is completed, the insertion tube 32 is pulled out from the through hole 23. When it is pulled out, the spring 25 is no longer compressed. Under the elastic force of the spring 25, the sealing block 26 moves up and down. The sealing block 26 moves to the bottom of the limiting ring 27. At this time, the connecting groove 28 is sealed by the sealing block 26 to ensure that the exhaust gas will not overflow from the through hole 23. This method can ensure that the operation is very convenient during the sampling process.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] Working principle: Connecting pipe 1 is installed between the exhaust pipe 4 and the exhaust pipe 4 via connecting flange 5. When it is necessary to test and sample the exhaust gas, insert pipe 32 is inserted into the through hole 23. After insertion, sealing block 26 is squeezed downward and spring 25 is compressed, so that insert pipe 32 can be inserted into the through hole 23. At this time, the connecting groove 28 is no longer sealed. The exhaust gas inside the connecting pipe 1 enters the insert pipe 32 through the connecting groove 28 and the connecting port 38. The sealing plate 37 can ensure that the exhaust gas will not leak through the connection between insert pipe 32 and through hole 23. Then, the butterfly valve 36 is opened. After opening, the connecting rod 34 is pulled outward by the push plate 33. The connecting rod 34 drives the piston block 35 to move up and down. The piston block 35 moves upward and can draw the exhaust gas into the sampling cylinder 31 through the insert pipe 32. After sampling, the butterfly valve 36 is closed, thus realizing the sampling of exhaust gas.

[0029] After sampling is completed, the insertion tube 32 is pulled out from the through hole 23. When it is pulled out, the spring 25 is no longer compressed. Under the elastic force of the spring 25, the sealing block 26 moves up and down. The sealing block 26 moves to the bottom of the limiting ring 27. At this time, the connecting groove 28 is sealed by the sealing block 26 to ensure that the exhaust gas will not overflow from the through hole 23. This method can ensure that the operation is very convenient during the sampling process.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas sampling device for detecting exhaust gas, comprising a connecting pipe (1), characterized in that: Both sides of the connecting pipe (1) are fixedly installed with exhaust pipes (4) via connecting flanges (5). A sealing assembly (2) is provided at the top of the connecting pipe (1), and a sampling assembly (3) is provided at the top of the sealing assembly (2). The sealing assembly (2) includes a top block (21), and a connecting block (22) is fixedly installed at the bottom of the top block (21). The connecting block (22) is fixedly installed at the top of the connecting pipe (1). The top block (21), the connecting block (22), and the side wall of the connecting pipe (1) are connected together. A through hole (23) is provided, and a sealing block (26) is slidably connected inside the through hole (23). A connecting groove (28) is provided between the inside of the connecting tube (1) and the through hole (23). The connecting groove (28) connects the through hole (23) and the inside of the connecting tube (1). The sampling component (3) includes a tube (32). A connecting port (38) is provided on the side of the tube (32). The connecting port (38) connects the inside of the tube (32) to the outside. The tube (32) is inserted into the through hole (23).

2. The gas sampling device for exhaust gas detection according to claim 1, characterized in that: A bottom plate (24) is fixedly installed inside the through hole (23). A spring (25) is fixedly installed between the top of the bottom plate (24) and the bottom of the sealing block (26). The spring (25) is located inside the communication groove (28) and the through hole (23).

3. The gas sampling device for exhaust gas detection according to claim 1, characterized in that: A limiting ring (27) is fixedly installed inside the through hole (23). The limiting ring (27) is located above the sealing block (26), and the insertion tube (32) passes through the inside of the limiting ring (27).

4. A gas sampling device for exhaust gas detection according to claim 1, characterized in that: A sampling tube (31) is fixedly installed on the top of the insertion tube (32), and a sealing plate (37) is fixedly installed on the outside of the insertion tube (32). The sealing plate (37) is attached to the top connecting tube (1) of the top block (21).

5. A gas sampling device for exhaust gas detection according to claim 4, characterized in that: A butterfly valve (36) is fixedly installed at the connection between the sampling tube (31) and the insertion tube (32). The upper and lower sides of the butterfly valve (36) are respectively connected to the inside of the sampling tube (31) and the insertion tube (32).

6. A gas sampling device for exhaust gas detection according to claim 5, characterized in that: A piston block (35) is slidably connected inside the sampling cylinder (31). A connecting rod (34) is fixedly installed on the top of the piston block (35). A push plate (33) is fixedly installed on the top of the connecting rod (34). The push plate (33) is located on the outside of the sampling cylinder (31).

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