A stationary pollution source exhaust gas sampling gun fixing device
By designing a fixing device with threaded rods and support structures, the discomfort and micro-vibration problems of the exhaust gas sampling gun during long-term use were solved, ensuring the stability and safety of the detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGZI HUAYU (SHENYANG) TESTING CERTIFICATION CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-26
AI Technical Summary
When used for a long time, the exhaust gas sampling gun may cause discomfort and micro-vibration due to its weight and fatigue, which can affect the detection results.
A fixed device for fixing a waste gas sampling gun for a fixed pollution source was designed. It achieves four-point support and positioning through a threaded rod and support structure. Combined with the interlocking of the arc-shaped seat and the round block, it provides stable support. The high-temperature resistant rubber gasket and the round sleeve block protect the operator and prevent hot air from rushing in.
This design achieves stable fixation of the exhaust gas sampling gun, avoiding discomfort and micro-vibration caused by prolonged use, and ensuring the stability and safety of the detection.
Smart Images

Figure CN224414820U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of exhaust gas sampling gun technology, specifically to a fixed device for an exhaust gas sampling gun for a fixed pollution source. Background Technology
[0002] With the acceleration of industrialization and urbanization, emissions of industrial waste gases (such as SO2, NOx, VOCs, and particulate matter) are increasing, posing a threat to the environment and human health. Environmental regulations in various countries (such as China's *Air Pollution Prevention and Control Law* and the EU's *Industrial Emissions Directive*) require enterprises to regularly monitor waste gas emissions and to monitor stationary pollution sources (such as exhaust pipes). During testing, waste gas sampling guns are used to detect stationary pollution sources to ensure that enterprises comply with environmental regulations. However, the weight of the waste gas sampling gun can cause discomfort when held for extended periods. Furthermore, fatigue-induced micro-vibrations can affect the detection capabilities of the sampling gun. Therefore, we propose a fixing device for waste gas sampling guns used at stationary pollution sources. Utility Model Content
[0003] The purpose of this invention is to provide a device for fixing a sampling gun for a fixed pollution source, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixed device for fixing a waste gas sampling gun for a fixed pollution source, comprising a waste gas sampling gun, with circular blocks symmetrically fixedly connected to both sides of the waste gas sampling gun, a groove being formed on the lower surface of the circular blocks, an arc-shaped seat being fitted to the bottom of the outer side wall of the circular blocks, a protrusion being fixedly connected to the center of the upper surface of the arc-shaped seat, the outer wall of the protrusion engaging with the groove of the circular blocks with a clearance fit, and a square frame support being fixedly connected to the lower surface of the arc-shaped seat.
[0005] Preferably, each of the four corners of the side wall of the square frame support is fixedly connected with an internally threaded rod, the inner cavity of the internally threaded rod is provided with a thread, the inner thread of the internally threaded rod is threadedly connected to an externally threaded rod, and the bottom end of the externally threaded rod is fixedly connected to a base.
[0006] Preferably, a support plate is fixedly connected to one side of the upper surface of the square frame support, and a semi-circular ring seat is fixedly connected to the center of the upper surface of the support plate. The inner ring wall of the semi-circular ring seat fits against the bottom of the side wall of the exhaust gas sampling gun with a clearance fit.
[0007] Preferably, a circular sleeve block is fixedly connected to the side wall of the barrel of the exhaust gas sampling gun, and a circular sleeve plate is fixedly connected to the outer wall of the circular sleeve block.
[0008] Preferably, the inner ring wall of the semi-circular seat is provided with a gasket, the upper surface of which is in contact with the bottom of the side wall of the exhaust gas sampling gun, and is in clearance fit.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the external threaded rod is adjusted according to the terrain, and the internal threaded rod is set at the four corners of the square frame support. By hand-turning the external threaded rod, it rotates within the internal threaded rod, and the lifting and lowering are achieved through the characteristics of the thread. The bottom base is in contact with the ground, and each external threaded rod has individual adjustment capability. Unlike the support of a tripod, it can achieve four-point support and positioning when facing uneven ground. At the same time, the exhaust gas sampling gun and the arc-shaped base can be quickly installed and disassembled, avoiding discomfort caused by prolonged lifting and preventing micro-vibration from affecting the detection of the exhaust gas sampling gun. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 for Figure 1 Structural detail drawing of the Chinese frame support;
[0012] Figure 3 for Figure 2 Detailed structural diagram of the semi-circular ring seat;
[0013] Figure 4 for Figure 2 Detailed structural diagram of the central arc-shaped seat;
[0014] In the diagram: 1. Exhaust gas sampling gun; 2. Round block; 3. Arc-shaped seat; 4. Protrusion; 5. Square frame support; 6. Internal threaded rod; 7. External threaded rod; 8. Base; 9. Support plate; 10. Semi-circular ring seat; 11. Gasket; 12. Circular sleeve block; 13. Circular sleeve plate. Detailed Implementation
[0015] 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.
[0016] Please see Figure 1-4 This utility model provides a fixed device for fixing a waste gas sampling gun for a fixed pollution source, including a waste gas sampling gun 1. Circular blocks 2 are symmetrically fixedly connected to both sides of the waste gas sampling gun 1. A groove is formed on the lower surface of the circular blocks 2. An arc-shaped seat 3 is attached to the bottom of the outer side wall of the circular blocks 2. A protrusion 4 is fixedly connected to the center of the upper surface of the arc-shaped seat 3. The outer wall of the protrusion 4 is engaged with the groove of the circular blocks 2 with a clearance fit. A square frame support 5 is fixedly connected to the lower surface of the arc-shaped seat 3.
[0017] The four corners of the side wall of the square support 5 are fixedly connected with internal thread rods 6. The inner cavity of the internal thread rod 6 is provided with threads. The internal thread rod 7 is threadedly connected to the inner thread of the internal thread rod 6. The bottom end of the external thread rod 7 is fixedly connected with a base 8.
[0018] A support plate 9 is fixedly connected to one side of the upper surface of the square support 5. A semi-circular ring seat 10 is fixedly connected to the center of the upper surface of the support plate 9. The inner ring wall of the semi-circular ring seat 10 fits against the bottom of the side wall of the exhaust gas sampling gun 1 with a clearance fit.
[0019] A circular sleeve block 12 is fixedly connected to the side wall of the barrel of the exhaust gas sampling gun 1, and a circular sleeve plate 13 is fixedly connected to the outer wall of the circular sleeve block 12.
[0020] The inner ring wall of the semi-circular seat 10 is provided with a gasket 11. The upper surface of the gasket 11 is in contact with the bottom of the side wall of the exhaust gas sampling gun 1, and the fit is clearance fit.
[0021] Working principle: When using the exhaust gas sampling gun 1 to detect a fixed pollution source, the exhaust gas sampling gun 1 is first moved to one side of the pollution source pipeline, and a square support 5 is set up. The external threaded rod 7 is adjusted according to the terrain, and the internal threaded rod 6 is set at the four corners of the square support 5. The external threaded rod 7 is rotated by hand to make it rotate within the internal threaded rod 6. The lifting and lowering are achieved by the characteristics of the thread. The bottom base 8 is in contact with the ground. Each external threaded rod 7 has individual adjustment capability to achieve four-point support and positioning. Then, the exhaust gas sampling gun 1 is inserted into the pollution source pipeline, and the bottom is fastened to the arc-shaped seat 3 of the square support 5. Circular blocks 2 are symmetrically set on both sides of the exhaust gas sampling gun 1, and the bottom of the circular blocks 2 is provided with grooves. Block 2 engages with arc-shaped seat 3. The protrusion 4 of arc-shaped seat 3 is prevented from penetrating into the inner cavity of block 2. A support plate 9 is fixed on one side of the surface of the square support 5. The surface of the support plate 9 contacts the bottom of the exhaust gas sampling gun 1 through the semi-circular ring seat 10 to support it. A gasket 11 is also provided on the inner ring wall of the semi-circular ring seat 10. The gasket 11 is made of high-temperature resistant rubber. A circular sleeve block 12 is fixed at the barrel of the exhaust gas sampling gun 1. When inserted into the pollution source pipe, the circular sleeve block 12 will fit against the inner cavity of the pollution source pipe. At the same time, the circular sleeve plate 13 on the rear side can provide temporary shielding to prevent hot air from directly affecting the operator's operation of the exhaust gas sampling gun 1. The above structure provides a fixed work for the exhaust gas sampling gun 1 during detection.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for fixing a waste gas sampling gun for a stationary pollution source, comprising a waste gas sampling gun (1), characterized in that: The exhaust gas sampling gun (1) has circular blocks (2) fixedly connected symmetrically on both sides. The lower surface of the circular blocks (2) has a groove. The bottom of the outer side wall of the circular blocks (2) is fitted with an arc-shaped seat (3). A protrusion (4) is fixedly connected at the center of the upper surface of the arc-shaped seat (3). The outer wall of the protrusion (4) is engaged with the groove of the circular blocks (2) and is in clearance fit. A square frame support (5) is fixedly connected to the lower surface of the arc-shaped seat (3).
2. The device for fixing a stationary pollution source exhaust gas sampling gun according to claim 1, characterized in that: The four corners of the side wall of the square support (5) are fixedly connected with internal thread rods (6). The inner cavity of the internal thread rod (6) is provided with threads. The internal thread rod (6) is threadedly connected to the threaded part of the inner cavity of the internal thread rod (6). The bottom end of the external thread rod (7) is fixedly connected to a base (8).
3. The device for fixing a stationary pollution source exhaust gas sampling gun according to claim 1, characterized in that: A support plate (9) is fixedly connected to one side of the upper surface of the square support (5), and a semi-circular ring seat (10) is fixedly connected to the center of the upper surface of the support plate (9). The inner ring wall of the semi-circular ring seat (10) is in contact with the bottom of the side wall of the exhaust gas sampling gun (1) and is in clearance fit.
4. The device for fixing a stationary pollution source exhaust gas sampling gun according to claim 1, characterized in that: A circular sleeve block (12) is fixedly connected to the side wall of the barrel of the exhaust gas sampling gun (1), and a circular sleeve plate (13) is fixedly connected to the outer wall of the circular sleeve block (12).
5. The device for fixing a stationary pollution source exhaust gas sampling gun according to claim 3, characterized in that: The inner ring wall of the semi-circular seat (10) is provided with a gasket (11), the upper surface of the gasket (11) is in contact with the bottom of the side wall of the exhaust gas sampling gun (1), and is in clearance fit.