Gas concentration detection device

Abstract

The utility model discloses a gas concentration detection device which comprises a shell with an inner cavity, a gas inlet pipe, a gas outlet pipe and a detection probe, the gas inlet pipe and the gas outlet pipe are respectively communicated with the inner cavity, the detection probe is arranged in the inner cavity, an inserting hole, an inserting rod and a protective cover are arranged at the upper end of the shell, and the protective cover is arranged at the lower end of the shell. The insertion hole is located right above the detection probe, the lower end of the insertion rod penetrates through the insertion hole and is connected with a brush head, and the protection cover covers the insertion rod and the insertion hole; the device has the advantages of quickly cleaning the detection probe and reducing the maintenance cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas concentration detection, in particular to a gas concentration detection device. Background Art

[0002] A gas concentration detection device is a device used to monitor the concentration of a specific gas (such as methane or carbon monoxide) within an industrial pipeline. It generally consists of a housing, a drainage tube connected to the interior of the housing, and a detection probe mounted within the housing. The drainage tube is inserted into the industrial pipeline to drain the gas within the pipeline. The gas in the pipeline is then directed to the detection probe, which detects the gas concentration in that area.

[0003] In actual applications, the gas medium transported in industrial pipelines may contain dust, particulate matter or other impurities. These impurities may enter the drainage pipe along with the gas during the flow process, and even reach the detection probe. If too many impurities adhere to the detection probe, the measurement value will be distorted, thereby affecting the real-time monitoring and judgment of the gas concentration. Therefore, it is necessary to regularly and frequently open the shell to clean the detection probe, which results in high maintenance costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a gas concentration detection device, which is convenient for quickly cleaning the detection probe and reduces maintenance costs.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a gas concentration detection device, comprising a shell with an inner cavity, an air inlet pipe, an air outlet pipe and a detection probe, the air inlet pipe and the air outlet pipe are respectively connected to the inner cavity, the detection probe is arranged in the inner cavity, the upper end of the shell is provided with a socket, a rod and a protective cover, the socket is located directly above the detection probe, the lower end of the rod is passed through the socket and is connected to a brush head, and the protective cover covers the rod and the socket.

[0006] Preferably, a spiral guide groove is provided on the inner wall of the insertion hole, a spiral guide bar is fixedly provided on the side wall of the insertion rod, the guide bar extends into the guide groove, and a pressure plate is rotatably provided on the upper end of the insertion rod.

[0007] Preferably, a rotary bearing is provided at the upper end of the insertion rod, the inner ring of the rotary bearing is fixedly connected to the insertion rod, and the outer ring of the rotary bearing is fixedly connected to the lower end surface of the pressure plate.

[0008] Preferably, a compression spring is sleeved on the outer side of the insertion rod, the lower end of the compression spring abuts against the upper end surface of the shell, and the upper end of the compression spring abuts against the lower end surface of the pressure plate.

[0009] Preferably, the brush head includes a circular plate and a brush fixedly arranged on the lower end surface of the circular plate, and the insertion rod is fixedly connected to the center of the upper end surface of the circular plate.

[0010] Preferably, a sealing ring is fixedly provided on the upper end surface of the circular plate, and the sealing ring abuts against the inner top surface of the inner cavity.

[0011] Preferably, a partition plate is provided in the shell, which divides the lower part of the inner cavity into a left chamber and a right chamber. The upper end of the air inlet pipe is connected to the bottom of the left chamber, and the upper end of the air outlet pipe is connected to the bottom of the right chamber. The detection probe is fixedly arranged on the upper end surface of the partition plate.

[0012] Preferably, a mounting seat is fixedly provided on the upper end surface of the partition plate, and the mounting seat is recessed downward to form a mounting groove. The bottom of the mounting groove is provided with a threading hole staggered with the partition plate, and the detection probe is arranged in the mounting groove, and the height of the upper end surface of the detection probe is not lower than the height of the upper end surface of the mounting seat.

[0013] Preferably, the upper end surface of the mounting seat is provided with an inclined guide surface sloping from the inside to the outside and downward, and the inclined guide surface surrounds the mounting groove.

[0014] Preferably, two observation windows are provided on the side of the shell, one observation window corresponds to the left chamber, and the other observation window corresponds to the right chamber.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. By setting a socket, a rod and a protective cover on the shell, and connecting a brush head to the lower end of the rod, after opening the protective cover, the staff can move the rod up and down and rotate it, and then use the brush head to clean the detection probe without disassembling the shell, so as to achieve the purpose of quickly cleaning the detection probe and help reduce maintenance costs;

[0017] 2. Use the brush head to clean the detection probe to effectively prevent dust, particles and other impurities from accumulating on the probe, thereby reducing the impact of impurities on detection accuracy and ensuring the accuracy of gas concentration measurement;

[0018] 3. By reducing the frequent disassembly and assembly of the detection probe and the housing, mechanical wear and degradation of sealing performance are avoided, which helps to extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the housing in the present invention;

[0023] Figure 5 It is a schematic diagram of the local structure of the utility model.

[0024] In the figure: 1. Shell; 11. Inner cavity; 111. Left chamber; 112. Right chamber; 12. Insertion hole; 121. Guide groove; 13. Partition plate; 14. Mounting seat; 141. Mounting groove; 142. Threading hole; 143. Bevel guide surface; 15. Observation window; 2. Air inlet pipe; 3. Air outlet pipe; 4. Detection probe; 51. Insert rod; 511. Guide strip; 52. Protective cover; 53. Brush head; 531. Round plate; 532. Brush; 533. Sealing ring; 54. Pressure plate; 55. Rotating bearing; 56. Compression spring. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Example 1: Figures 1 to 3 As shown, a gas concentration detection device includes a shell 1 with an inner cavity 11, an air inlet pipe 2, an air outlet pipe 3 and a detection probe 4. The air inlet pipe 2 and the air outlet pipe 3 are respectively connected to the inner cavity 11. The detection probe 4 is arranged in the inner cavity 11. The upper end of the shell 1 is provided with a socket 12 connected to the inner cavity 11, an insertion rod 51 and a protective cover 52. The socket 12 is located directly above the detection probe 4. The lower end of the insertion rod 51 is provided with the socket 12 and is connected to a brush head 53. The protective cover 52 covers the insertion rod 51 and the socket 12.

[0028] In this embodiment, the brush head 53 includes a circular plate 531 and a brush 532 fixedly provided on the lower end surface of the circular plate 531 , and the insertion rod 51 is fixedly connected to the center of the upper end surface of the circular plate 531 .

[0029] In this solution, the protective cover 52 plays a protective role to prevent gas from leaking out from between the jack 12 and the insertion rod 51. The protective cover 52 is detachably connected to the shell 1. After the staff opens the protective cover 52, they can hold the upper end of the insertion rod 51 to control the insertion rod 51 and the brush head 53 to move up and down and rotate. When the insertion rod 51 moves downward, the brush head 53 can come into contact with the detection probe 4. At this time, the brush head 53 is controlled to rotate, which can clean the detection probe 4. The operation is simple and there is no need to disassemble the shell 1.

[0030] It should be noted that the detection probe 4 adopts a common gas concentration detection sensor on the market, such as a methane concentration detection sensor or a carbon monoxide concentration detection sensor, which is selected according to actual needs.

[0031] Example 2: Figures 2 to 5 As shown, the remaining parts are identical to those of the first embodiment, except that a spiral guide groove 121 is provided on the inner wall of the insertion hole 12, and a spiral guide bar 511 is fixedly provided on the side wall of the insertion rod 51. The guide bar 511 extends into the guide groove 121, and a pressure plate 54 is rotatably provided on the upper end of the insertion rod 51. Preferably, a rotating bearing 55 is provided on the upper end of the insertion rod 51. The inner ring of the rotating bearing 55 is fixedly connected to the insertion rod 51, and the outer ring of the rotating bearing 55 is fixedly connected to the lower end surface of the pressure plate 54. By providing the guide groove 121 and the guide bar 511, the insertion rod 51 will rotate synchronously when it is moved up and down, eliminating the need for manual rotation of the insertion rod 51 by the operator, thereby simplifying operation.

[0032] In this embodiment, a compression spring 56 is provided on the outer side of the insertion rod 51, and the lower end of the compression spring 56 abuts against the upper end surface of the shell 1, and the upper end of the compression spring 56 abuts against the lower end surface of the pressure plate 54. The compression spring 56 is used to drive the pressure plate 54 and the insertion rod 51 to move upward to prevent the brush head 53 from blocking the detection probe 4 and affecting the normal operation of the detection probe 4. At the same time, the staff only needs to press the pressure plate 54 at intervals to achieve the purpose of cleaning the detection probe 4, which helps to further improve convenience.

[0033] In this embodiment, a sealing ring 533 is fixedly provided on the upper end surface of the circular plate 531. When the circular plate 531 moves upward, the sealing ring 533 will abut against the inner top surface of the inner cavity 11. The sealing ring 533 and the circular plate 531 cooperate to cover the socket 12, which helps to improve the sealing performance, reduce the risk of gas leakage, and improve safety.

[0034] It should be noted that the upper end of the guide groove 121 passes through the upper end surface of the housing 1 , and the lower end of the guide groove 121 is communicated with the inner cavity 11 .

[0035] Example 3: Figures 1 to 4As shown, the rest of the parts are the same as those in Example 1, except that a partition plate 13 is provided in the shell 1, and the partition plate 13 divides the lower part of the inner cavity 11 into a left chamber 111 and a right chamber 112. The upper end of the air inlet pipe 2 is connected to the bottom of the left chamber 111, and the upper end of the air outlet pipe 3 is connected to the bottom of the right chamber 112. The detection probe 4 is fixedly arranged on the upper end surface of the partition plate 13.

[0036] In this embodiment, a mounting seat 14 is fixedly provided on the upper end surface of the partition plate 13, and the mounting seat 14 is recessed downward to form a mounting groove 141. The bottom of the mounting groove 141 is provided with a threading hole 142 staggered from the partition plate 13. The threading hole 142 is connected to the right chamber 112. The detection probe 4 is arranged in the mounting groove 141, and the height of the upper end surface of the detection probe 4 is not lower than the height of the upper end surface of the mounting seat 14.

[0037] In this embodiment, an upper end surface of the mounting seat 14 is provided with an inclined guide surface 143 sloping downward from the inside to the outside. The inclined guide surface 143 surrounds the mounting groove 141 to reduce the possibility of impurities accumulating on the mounting seat 14 .

[0038] In this embodiment, two observation windows 15 are provided on the side of the shell 1, one observation window 15 corresponds to the left chamber 111, and the other observation window 15 corresponds to the right chamber 112, so that the staff can quickly confirm the accumulation of impurities in the shell 1 through the observation window 15.

[0039] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A gas concentration detection device, comprising a housing (1) having an inner cavity (11), an air inlet pipe (2), an air outlet pipe (3) and a detection probe (4), wherein the air inlet pipe (2) and the air outlet pipe (3) are respectively connected to the inner cavity (11), and the detection probe (4) is arranged in the inner cavity (11), characterized in that The upper end of the housing (1) is provided with a socket (12), an insertion rod (51) and a protective cover (52); the socket (12) is located directly above the detection probe (4); the lower end of the insertion rod (51) is provided with the socket (12) and is connected to a brush head (53); the protective cover (52) covers the insertion rod (51) and the socket (12).

2. A gas concentration detection device according to claim 1, characterized in that The inner wall of the insertion hole (12) is provided with a spiral guide groove (121), the side wall of the insertion rod (51) is fixedly provided with a spiral guide bar (511), the guide bar (511) extends into the guide groove (121), and the upper end of the insertion rod (51) is rotatably provided with a pressure plate (54).

3. A gas concentration detection device according to claim 2, characterized in that A rotary bearing (55) is provided at the upper end of the insertion rod (51), the inner ring of the rotary bearing (55) is fixedly connected to the insertion rod (51), and the outer ring of the rotary bearing (55) is fixedly connected to the lower end surface of the pressure plate (54).

4. A gas concentration detection device according to claim 2, characterized in that A compression spring (56) is sleeved on the outer side of the insertion rod (51), the lower end of the compression spring (56) abuts against the upper end surface of the shell (1), and the upper end of the compression spring (56) abuts against the lower end surface of the pressure plate (54).

5. A gas concentration detection device according to claim 4, characterized in that The brush head (53) comprises a circular plate (531) and a brush (532) fixedly arranged on the lower end surface of the circular plate (531), and the insertion rod (51) is fixedly connected to the center of the upper end surface of the circular plate (531).

6. A gas concentration detection device according to claim 5, characterized in that A sealing ring (533) is fixedly provided on the upper end surface of the circular plate (531), and the sealing ring (533) abuts against the inner top surface of the inner cavity (11).

7. A gas concentration detection device according to claim 1, characterized in that A partition plate (13) is provided in the shell (1), and the partition plate (13) divides the lower part of the inner cavity (11) into a left chamber (111) and a right chamber (112). The upper end of the air inlet pipe (2) is connected to the bottom of one of the left chambers (111), and the upper end of the air outlet pipe (3) is connected to the bottom of the right chamber (112). The detection probe (4) is fixedly arranged on the upper end surface of the partition plate (13).

8. A gas concentration detection device according to claim 7, characterized in that A mounting seat (14) is fixedly provided on the upper end surface of the partition plate (13); the mounting seat (14) is recessed downward to form a mounting groove (141); a threading hole (142) staggered from the partition plate (13) is provided at the bottom of the mounting groove (141); the detection probe (4) is arranged in the mounting groove (141); and the height of the upper end surface of the detection probe (4) is not lower than the height of the upper end surface of the mounting seat (14).

9. A gas concentration detection device according to claim 8, characterized in that The upper end surface of the mounting seat (14) is provided with an inclined guide surface (143) that slopes from the inside outward and downward, and the inclined guide surface (143) surrounds the mounting groove (141).

10. A gas concentration detection device according to claim 7, characterized in that Two observation windows (15) are provided on the side of the housing (1), one of the observation windows (15) corresponds to the left chamber (111), and the other of the observation windows (15) corresponds to the right chamber (112).

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