Rainproof and dustproof sampling head structure for outdoor gas monitor

Abstract

This utility model discloses a rainproof and dustproof sampling head structure for an outdoor gas monitor, relating to the technical field of sampling head structures. The sampling head structure includes a stainless steel cylinder with a connecting screw head integrally formed at its upper end. A top cover plate is welded to the outer wall of the connecting screw head, and an outer ring frame is located below the top cover plate. It also includes an air inlet hopper integrally formed and connected to the lower end of the stainless steel cylinder. An air pump is located below the air inlet hopper, with a sampling suction pipe and an air delivery pipe respectively located at the inlet and outlet ends of the air pump. One end of the air delivery pipe is connected to the bottom of the air inlet hopper. This design solves the problem that existing sampling heads, while facilitating internal cleaning and maintenance through a detachable structure, lack effective shielding and protection mechanisms during use, making them susceptible to dust and rain during outdoor use and reducing their lifespan.

Description

Technical Field

[0001] This utility model relates to the field of sampling head structure technology, specifically a rainproof and dustproof sampling head structure for outdoor gas monitoring instruments. Background Technology

[0002] An outdoor gas monitor is a device used to detect gas leaks or concentrations in outdoor environments. It is mainly used in fields such as industrial safety and environmental monitoring. The sampling head of an outdoor gas monitor is a key component for collecting gas samples. It is usually made of corrosion-resistant materials and includes an air inlet and connecting pipe. Gas is introduced into the detection system through negative pressure or pump suction.

[0003] For example, announcement number CN219201014U (named "An Oil Fume Sampling Head for an Online Oil Fume Monitor") includes an oil fume monitor, wires, and a sampling head body. An installation sleeve is fixedly connected to the side wall of the sampling head body. The side wall of the installation sleeve is provided with a protective mechanism for protecting the sampling head body. The protective mechanism includes an installation ring disposed on the side wall of the installation sleeve. A sleeve is fixedly connected to the side wall of the installation ring. An installation component is provided on the side wall of the sleeve. Two threaded holes are opened at the upper end of the installation component. A connecting cylinder is provided inside the sleeve. A fixing sleeve is fixedly connected to the lower end of the connecting cylinder. A scraper ring is fixedly connected to the lower end of the fixing sleeve. The installation sleeve and the installation ring are threadedly connected. A sealing mechanism for sealing the sampling head body is provided inside the sleeve. With the protective mechanism, when the sampling head body is disassembled, surface dirt is cleaned by the scraper ring, resulting in a clean surface when the sampling head body is pulled out, facilitating disassembly and maintenance. Furthermore, the sampling head body is protected by the sleeve during daily use, making it less susceptible to damage and interference.

[0004] The aforementioned sampling head features a detachable structure that facilitates internal cleaning and maintenance. However, the sampling head lacks an effective shielding and protection mechanism during use, making it susceptible to dust and rain damage when used outdoors, thus reducing its lifespan. To address this, we provide a rainproof and dustproof sampling head structure for outdoor gas monitors. Utility Model Content

[0005] The purpose of this utility model is to provide a rainproof and dustproof sampling head structure for outdoor gas monitors, in order to solve the problem mentioned in the background art that the existing sampling heads are easy to clean and maintain internally through a detachable structure, but lack an effective shielding and protection mechanism during use, which makes the sampling heads susceptible to dust and rain when used outdoors, resulting in a reduced service life of the sampling heads.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rainproof and dustproof sampling head structure for an outdoor gas monitor, comprising a stainless steel cylinder, a connecting screw head integrally formed at the upper end of the stainless steel cylinder, a top cover plate sleeved and welded onto the outer wall of the connecting screw head, and an outer ring frame provided below the top cover plate.

[0007] Also includes:

[0008] An air inlet hopper is integrally formed and connected to the lower end of the stainless steel air cylinder. An air injection pump is installed below the air inlet hopper. A sampling tube and an air delivery tube are respectively installed on the air inlet and air outlet ends of the air injection pump. One end of the air delivery tube is connected to the bottom of the air inlet hopper.

[0009] The limiting ring frame is rotatably mounted on the inner wall of the outer ring frame, and the limiting ring frame has an inner through hole inside. The bottom of the outer ring frame has eight adjusting screw holes at equal intervals.

[0010] A shielding arc plate is disposed below the top shielding plate, and a top seat plate is welded to the top of the shielding arc plate;

[0011] An exhaust pipe is connected to one side of the outer wall of the stainless steel cylinder, and one end of the exhaust pipe is connected to an exhaust guide tube, the inside of which is equipped with a connecting spring.

[0012] Preferably, the diameter of the adjusting screw hole is equal to the diameter of the inner through hole, and a positioning bolt is installed inside the inner through hole and the adjusting screw hole.

[0013] Preferably, a sealing plug is provided below the connecting spring, and the two ends of the connecting spring are welded to the sealing plug and the exhaust guide, respectively.

[0014] Preferably, an air inlet plate is welded to one end of the sampling tube, and a filter screen is fixed in the internal groove of the air inlet plate by screws.

[0015] Preferably, a connecting rod is provided between the top seat plate and the limiting ring frame, and the two ends of the connecting rod are welded to the top seat plate and the limiting ring frame respectively.

[0016] Preferably, the outer ring frame is located outside the stainless steel air cylinder, and the outer ring frame is welded to the top cover plate via a connecting rod.

[0017] Preferably, the exhaust pipe is provided with an exhaust valve, and the two ends of the exhaust valve are mechanically sealed to the exhaust pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention uses a top shield to cover the sampling head structure, preventing rain and dust from adhering and corroding it. By rotating the limiting ring frame on the outer ring frame, the limiting frame can drive the top seat plate and the shielding arc plate to rotate and adjust 360 degrees, making it easy to adjust the shielding arc plate to a suitable position. This further protects against rain and dust corrosion in outdoor environments. It overcomes the problem that existing sampling heads, while having a detachable structure for easy internal cleaning and maintenance, lack an effective shielding protection mechanism during use, making them susceptible to dust and rain damage when used outdoors, thus reducing the lifespan of the sampling head.

[0020] Install the sampling head onto the sensing position at the bottom of the outdoor gas monitor by connecting the screw head. After tightening, draw outdoor gas from the sampling tube using the air injection pump. Then, inject the gas drawn in by the air injection pump into the air intake hopper through the air delivery pipe. The air intake hopper then delivers air into the stainless steel cylinder, achieving the purpose of easy assembly and use, and easy extraction of sampling gas. Attached Figure Description

[0021] Figure 1 This is a front view of the rainproof and dustproof sampling head structure for an outdoor gas monitor according to this utility model;

[0022] Figure 2 This is a rear view of the rainproof and dustproof sampling head structure for an outdoor gas monitor according to this utility model;

[0023] Figure 3 This is a cross-sectional view of the rainproof and dustproof sampling head structure for an outdoor gas monitor according to this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the exhaust guide tube of this utility model;

[0025] Figure 5 This is an enlarged schematic diagram of part A of the present invention;

[0026] In the diagram: 1. Stainless steel air cylinder; 2. Connecting screw head; 3. Top cover plate; 4. Covering arc plate; 5. Top seat plate; 6. Connecting rod; 7. Outer ring frame; 8. Exhaust pipe; 9. Exhaust valve; 10. Exhaust guide tube; 11. Sealing plug; 12. Air injection pump; 13. Sampling tube; 14. Air delivery pipe; 15. Air inlet hopper; 16. Air inlet end plate; 17. Filter screen; 18. Limiting ring frame; 19. Positioning bolt; 20. Adjustment screw hole; 21. Connecting spring; 22. Internal perforation. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figure 1-5 An embodiment of this utility model is provided: a rainproof and dustproof sampling head structure for an outdoor gas monitor, including a stainless steel cylinder 1, a connecting screw head 2 integrally formed at the upper end of the stainless steel cylinder 1, a top cover plate 3 welded to the outer wall of the connecting screw head 2, and an outer ring frame 7 below the top cover plate 3.

[0029] It also includes: an air inlet hopper 15, which is integrally formed and connected to the lower end of the stainless steel air cylinder 1, and an air injection pump 12 is provided below the air inlet hopper 15. The air injection pump 12 has a sampling tube 13 and an air delivery tube 14 respectively on its air inlet and air outlet ends. One end of the air delivery tube 14 is connected to the bottom of the air inlet hopper 15; a limiting ring frame 18, which is rotatably set on the inner wall of the outer ring frame 7, and the limiting ring frame 18 has an inner through hole 22. The bottom of the outer ring frame 7 has eight adjusting screw holes 20 at equal intervals; a shielding arc plate 4, which is set below the top shielding plate 3, and a top seat plate 5 is welded to the top of the shielding arc plate 4; and an exhaust pipe 8, which is connected to one side of the outer wall of the stainless steel air cylinder 1, and one end of the exhaust pipe 8 is connected to an exhaust guide tube 10. A connecting spring 21 is provided inside the exhaust guide tube 10.

[0030] In use, the sampling head is installed onto the sensing position at the lower end of the outdoor gas monitor by connecting screw head 2. After tightening, outdoor gas is drawn in from the sampling tube 13 by the air pump 12, and then injected into the air intake hopper 15 through the air delivery pipe 14. The air intake hopper 15 sends air into the stainless steel cylinder 1. The gas sensor in the sensing end of the outdoor gas monitor detects and processes the gas inside the stainless steel cylinder 1. The detected and processed values ​​are displayed on the outdoor monitor. The sampling head structure is shielded by the top cover plate 3 to prevent rain and dust from adhering and corroding. By rotating the limiting ring frame 18 on the outer ring frame 7, the limiting ring frame 18 can drive the top seat plate 5 and the shielding arc plate 4 to rotate and adjust 360 degrees, so that the shielding arc plate 4 can be adjusted to a suitable position to further cope with the corrosion of rain and dust in the outdoor environment.

[0031] Please see Figure 5 The diameter of the adjusting screw hole 20 is equal to the diameter of the inner through hole 22. A positioning bolt 19 is installed inside both the inner through hole 22 and the adjusting screw hole 20. The positioning bolt 19 positions and connects the limiting ring frame 18 and the outer ring frame 7, thereby locking the position of the limiting ring frame 18 after rotation. Please refer to [link to relevant documentation]. Figure 4A sealing plug 11 is provided below the connecting spring 21. Both ends of the connecting spring 21 are welded to the sealing plug 11 and the exhaust guide 10, respectively. The sealing plug 11 below the connecting spring 21 serves to seal the bottom of the exhaust guide 10. Please refer to [link / reference]. Figure 2 An air inlet plate 16 is welded to one end of the sampling tube 13. A filter screen 17 is fixedly installed in the internal groove of the air inlet plate 16 by screws. The air inlet plate 16 welded to one end of the sampling tube 13 serves to support the filter screen 17 for installation. Please refer to [link / reference]. Figure 2 A connecting rod 6 is provided between the top seat plate 5 and the limiting ring frame 18. The two ends of the connecting rod 6 are welded to the top seat plate 5 and the limiting ring frame 18 respectively. The connecting rod 6 between the top seat plate 5 and the limiting ring frame 18 serves to connect the top seat plate 5 and the limiting ring frame 18. Please refer to [link / reference]. Figure 1 The outer ring frame 7 is located outside the stainless steel air cylinder 1. The outer ring frame 7 is welded to the top cover plate 3 via connecting rods. Please refer to [link / reference]. Figure 1 An exhaust valve 9 is provided on the exhaust pipe 8. Both ends of the exhaust valve 9 are mechanically sealed to the exhaust pipe 8. The exhaust valve 9 on the exhaust pipe 8 plays the role of controlling the opening and closing of the exhaust pipe 8 and the flow rate.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rainproof and dustproof sampling head structure for an outdoor gas monitor, comprising a stainless steel cylinder (1), a connecting screw head (2) integrally formed on the upper end of the stainless steel cylinder (1), a top cover plate (3) sleeved and welded on the outer wall of the connecting screw head (2), and an outer ring frame (7) provided below the top cover plate (3). Its features are: Also includes: An air inlet hopper (15) is integrally formed and connected to the lower end of the stainless steel air cylinder (1). An air injection pump (12) is provided below the air inlet hopper (15). A sampling tube (13) and an air delivery pipe (14) are respectively provided on the air inlet end and the air outlet end of the air injection pump (12). One end of the air delivery pipe (14) is connected to the bottom of the air inlet hopper (15). The limiting ring frame (18) is rotatably mounted on the inner wall of the outer ring frame (7), and the limiting ring frame (18) has an inner through hole (22) inside, and the bottom of the outer ring frame (7) has eight adjusting screw holes (20) at equal intervals. A shielding arc plate (4) is located below the top shielding plate (3), and a top seat plate (5) is welded to the top of the shielding arc plate (4). An exhaust pipe (8) is connected to the outer wall of one side of the stainless steel cylinder (1), and an exhaust guide cylinder (10) is connected to one end of the exhaust pipe (8). A connecting spring (21) is provided inside the exhaust guide cylinder (10).

2. The rain and dust proof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: The diameter of the adjusting screw hole (20) is equal to the diameter of the inner through hole (22), and a positioning bolt (19) is installed inside the inner through hole (22) and the adjusting screw hole (20).

3. The rain and dust proof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: A sealing plug (11) is provided below the connecting spring (21), and the two ends of the connecting spring (21) are welded to the sealing plug (11) and the exhaust pipe (10) respectively.

4. The rainproof and dustproof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: One end of the sampling tube (13) is welded with an air inlet plate (16), and a filter screen (17) is fixed in the internal groove of the air inlet plate (16) by screws.

5. The rain and dust proof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: A connecting rod (6) is provided between the top plate (5) and the limiting ring frame (18), and the two ends of the connecting rod (6) are welded to the top plate (5) and the limiting ring frame (18) respectively.

6. The rain and dust proof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: The outer ring frame (7) is located outside the stainless steel air cylinder (1), and the outer ring frame (7) is welded to the top cover plate (3) by connecting rods.

7. The rain and dust proof sampling head structure for outdoor gas monitor according to claim 1, characterized in that: An exhaust valve (9) is provided on the exhaust pipe (8), and the two ends of the exhaust valve (9) are mechanically sealed to the exhaust pipe (8).

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