Pumping type gas detector

Abstract

The utility model discloses a pumping type gas detector, which comprises a gas detector assembly, a detector main body, an alarm lamp and a gas sensor assembly, and the gas sensor assembly comprises a built-in sensor shell and a built-in micropump shell which are fixedly connected; the protection assembly comprises an outer lantern ring and a protection sleeve which are arranged on the outer side of the gas sensor assembly in a sleeving mode and are in combined connection, an elastic plate is arranged on the inner wall of the protection sleeve, a pressing column with one end connected with the elastic plate slidably penetrates through the protection sleeve, and a protrusion is arranged at the top end of the elastic plate; through the design of the outer sleeve ring, the protective sleeve and the dust accumulation box, the outer sleeve ring, the protective sleeve and the dust accumulation box are arranged on the outer side of the gas sensor assembly, the purpose of separating the gas sensor assembly from the outside is achieved, and pollutants such as external dust, oil stains and water vapor are prevented from making contact with the gas sensor assembly; pollutants in the gas are adsorbed and settled, and the function of reducing the pollutants in the gas is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas detection devices, specifically relating to a pump-suction gas detector. Background Technology

[0002] Gas detectors are gas detection devices used to detect the concentration of gases in the air in real time, serving a safety protection function. There are various types of gas detectors, among which the pump-suction gas detector is one type. It mainly uses a gas pump to actively extract gas and can quickly deliver the gas to the sensor for detection. The authorized document with publication number CN222461428U discloses a gas detector with a filter. The gas detector is a gas detection device whose structure and principle are disclosed.

[0003] When pump-suction gas detectors are used in industrial environments, their sensor surfaces may accumulate a large amount of dust and oil. If the sensor surface is covered with contaminants such as dust, oil, and water vapor, it will hinder the contact between the gas and the sensor, affecting the adsorption and reaction of the gas, thereby reducing the sensor's detection performance and causing its sensitivity to decrease. Pump-suction gas detectors also have shortcomings in their design, as they do not have a design to protect the sensor from the outside environment.

[0004] Existing pump-suction gas detectors, when used in industrial environments, have the problem of not having a protective sensor design to isolate the sensor from the outside environment. To address this, this application proposes a pump-suction gas detector. Utility Model Content

[0005] The purpose of this invention is to provide a pump-suction gas detector to solve the problem mentioned in the background art of the lack of a protective sensor design that isolates the sensor from the outside world.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pump-suction gas detector, comprising...

[0007] A gas detector assembly, including a detector body, an alarm light, and a gas sensor assembly, the gas sensor assembly including a fixedly connected built-in sensor housing and a built-in micropump housing;

[0008] The protective assembly includes an outer sleeve and a protective sleeve that are fitted onto the outside of the gas sensor assembly. The inner wall of the protective sleeve is provided with a spring plate. A pressing post with one end connected to the spring plate slides through the protective sleeve. The top of the spring plate is provided with a protrusion.

[0009] The dust-blocking mechanism includes a dust collection box fixedly connected to the bottom end of a protective sleeve, an air inlet communicating with the dust collection box, and a sealing block engaging with the dust collection box. The sealing block has a lifting rod and a mesh cylinder on opposite surfaces. The sealing block has a foam block inside the mesh cylinder. The dust collection box has a baffle inside, and the surface of the baffle is welded with symmetrically distributed ventilation pipes. The inner surface of the dust collection box has a second spacer ring.

[0010] Preferably, the inner surface of the outer ring is provided with a first spacer ring, the center lines of the first spacer ring and the outer ring are on the same axis, and the protective sleeve and the spring plate are inserted into the annular cavity a formed between the outer ring and the first spacer ring.

[0011] Preferably, the inner wall of the outer ring has a concave annular groove, and the protrusion engages with the groove.

[0012] Preferably, one end of the spring plate is fitted to the inner wall of the protective sleeve, and there is a gap between the other end of the spring plate and the protective sleeve. The inner diameter of the protective sleeve is 1 cm larger than the outer diameter of the cylindrical gas sensor assembly.

[0013] Preferably, a dust-absorbing cotton cloth is adhered to the center of the baffle.

[0014] Preferably, the outer diameter of the mesh cylinder is the same as the inner diameter of the venting pipe, the mesh cylinder corresponds to the venting pipe, the top of the lifting rod is a spherical structure, and the centers of the air inlet, the dust collection box, the baffle, and the second spacer ring are on the same axis.

[0015] Preferably, the gas transport path in the ash collection box is sequentially: direction b, air inlet, direction c, ventilation pipe, foam blocks in the mesh cylinder, and direction d.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the outer outer ring, protective sleeve, and dust collection box are designed and placed on the outside of the gas sensor assembly to separate the gas sensor assembly from the outside environment, thereby preventing external contaminants such as dust, oil, and water vapor from contacting the gas sensor assembly.

[0018] 2. In this utility model, the gas path in the dust collection box is extended through the designed dust-blocking mechanism, and the foam blocks and dust-absorbing cotton cloth adsorb pollutants, so that the pollutants in the gas are adsorbed and settled, thus reducing the pollutants in the gas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the detector body of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the outer ring of this utility model;

[0022] Figure 4 This is a cross-sectional view of the ash collection box of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the baffle of this utility model;

[0024] Figure 6 This is a cross-sectional structural diagram of the protective sleeve of this utility model;

[0025] In the diagram: 1. Detector body; 2. Alarm light; 3. Gas sensor assembly; 4. Outer ring; 5. Protective sleeve; 6. Dust collection box; 7. Air inlet; 8. Sealing block; 9. Baffle; 31. Built-in sensor housing; 32. Built-in micro pump housing; 41. First spacer ring; 42. Groove; 51. Pressing post; 52. Spring plate; 61. Second spacer ring; 81. Lifting rod; 82. Mesh cylinder; 83. Foam block; 91. Ventilation pipe; 92. Dust-absorbing cloth; 521. Protrusion. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 6This utility model provides a technical solution: a pump-type gas detector, including a gas detector assembly, comprising a detector body 1, an alarm light 2, and a gas sensor assembly 3. The gas sensor assembly 3 includes a fixedly connected built-in sensor housing 31 and a built-in micro-pump housing 32. The built-in sensor housing 31 houses a sensor, allowing selection of a suitable sensor based on the type of gas being detected. The built-in micro-pump housing 32 houses a micro-pump to increase gas flow rate. The built-in micro-pump housing 32 has an exhaust pipe that passes through an outer ring 4. A protective assembly includes a combined outer ring 4 and a protective sleeve 5 fitted around the outside of the gas sensor assembly 3. The outer ring 4 and the protective sleeve... The sleeve 5 is a modular structure that can be disassembled. The outer ring 4 and the protective sleeve 5 are fitted onto the outside of the gas sensor assembly 3 to separate the gas sensor assembly 3 from the outside environment, preventing dust, oil, moisture, and other contaminants from contacting the gas sensor assembly 3. The inner wall of the protective sleeve 5 is provided with a spring plate 52, and a pressing post 51 connected to the spring plate 52 slides through the protective sleeve 5. The top of the spring plate 52 is provided with a protrusion 521. The spring plate 52 is made of an elastic metal material, such as spring steel. When the outer ring 4 and the protective sleeve 5 are combined, the outer ring 4 is screwed into the gas sensor assembly 3. Pressing the pressing post 51 with a finger presses the spring plate 52, and the top of the protective sleeve 5 is embedded in the outer ring. Inside the outer sleeve 4, releasing the pressing post 51 resets the spring plate 52, and the protrusion 521 embeds into the inner part of the outer sleeve 4. The outer sleeve 4 and the protective sleeve 5 are combined, facilitating the installation and removal of the protective sleeve 5. A hand-tightening screw can also be passed through the outer sleeve 4 to further reinforce the protective sleeve 5. The dust blocking mechanism includes a dust collection box 6 fixedly connected to the bottom end of the protective sleeve 5, an air inlet 7 communicating with the dust collection box 6, and a sealing block 8 engaging with the dust collection box 6. The dust collection box 6 is threadedly connected to the protective sleeve 5 and is installed at the bottom end of the protective sleeve 5. The dust collection box 6 serves to protect the gas sensor assembly 3 from external pollutants. The sealing block 8 has a lifting rod 81 and a mesh cylinder 82 on opposite surfaces. The sealing block 8 is designed for easy lifting. It is located inside a mesh cylinder 82 and contains foam blocks 83. The mesh cylinder 82 is breathable, and the foam blocks 83 adsorb dust particles and other pollutants from the gas. The dust collection box 6 has an internal baffle 9 that divides the internal space into cavities A and B, allowing gas to flow through a small-diameter ventilation pipe 91. This increases the airflow path in the dust collection box 6, achieving the effect of dust particle settling. Symmetrically distributed ventilation pipes 91 are welded to the surface of the baffle 9, allowing gas to flow through the small-diameter ventilation pipes 91. A second partition ring 61 is located on the inner surface of the dust collection box 6, blocking the gas and causing it to flow along a predetermined path, thus extending the airflow path.

[0028] In this embodiment, the inner surface of the outer ring 4 is provided with a first spacer 41. The first spacer 41 serves to limit the elastic plate 52 and prevent the elastic plate 52 from deforming significantly. The center lines of the first spacer 41 and the outer ring 4 are on the same axis. The protective sleeve 5 and the elastic plate 52 are inserted into the annular cavity a formed between the outer ring 4 and the first spacer 41. The elastic plate 52 moves within the space of the annular cavity a.

[0029] In this embodiment, the inner sidewall of the outer sleeve 4 is provided with a concave annular groove 42, the protrusion 521 cooperates with the groove 42, the protrusion 521 is embedded in the groove 42, and the protective sleeve 5 is combined with the outer sleeve 4.

[0030] In this embodiment, one end of the spring plate 52 is attached to the inner wall of the protective sleeve 5, and there is a gap between the other end of the spring plate 52 and the protective sleeve 5, which facilitates the spring plate 52 to bounce. The inner diameter of the protective sleeve 5 is 1 cm larger than the outer diameter of the cylindrical gas sensor assembly 3, which facilitates the protective sleeve 5 to be fitted on the outside of the gas sensor assembly 3.

[0031] In this embodiment, a dust-absorbing cotton cloth 92 is attached to the center of the baffle 9, and the dust-absorbing cotton cloth 92 serves to adsorb dust particles and impurities in the gas.

[0032] In this embodiment, the outer diameter of the mesh cylinder 82 is the same as the inner diameter of the vent pipe 91. The mesh cylinder 82 corresponds to the vent pipe 91. The top of the lifting rod 81 is a spherical structure. The centers of the air inlet 7, the ash collection box 6, the baffle 9, and the second spacer ring 61 are on the same axis. The positions of the air inlet 7, the ash collection box 6, the baffle 9, and the second spacer ring 61 are accurately installed. The sealing block 8 and the mesh cylinder 82 are connected to the ash collection box 6 by a plug-in connection. This connection method facilitates the removal of the sealing block 8 and the mesh cylinder 82, and makes it convenient to manually replace the foam block 83.

[0033] In this embodiment, the gas transport path in the ash collection box 6 is sequentially in the direction b, the air inlet 7, the direction c, the ventilation pipe 91, the foam blocks 83 in the mesh cylinder 82, and the direction d. The gas flows through the small-diameter ventilation pipe 91, and the baffle 9 and the second partition ring 61 block the gas, so that the gas flows along the predetermined path, prolonging the airflow path, and allowing the pollutants in the gas to be adsorbed and settled.

[0034] Working principle and usage process of this utility model:

[0035] When the pump-type gas detector is in use, the built-in sensor housing 31 and the built-in micro-pump housing 32 on the gas sensor assembly 3 are working. The built-in sensor housing 31 contains a sensor, and the built-in micro-pump housing 32 contains a micro-pump. When the micro-pump is working, it increases the gas flow rate, and the airflow comes into contact with the sensor to achieve the purpose of detecting the gas concentration.

[0036] The outer ring 4 is fitted onto the outside of the gas sensor assembly 3;

[0037] Pressing the pressure post 51 with your finger presses the spring plate 52, and the top of the protective sleeve 5 is embedded inside the outer ring 4;

[0038] Release the pressing column 51, the spring plate 52 returns to its original position, the protrusion 521 is embedded in the inner part of the outer ring 4, the outer ring 4 and the protective sleeve 5 are combined, making it easy to disassemble and install the protective sleeve 5. A hand-tightening screw can also be passed through the outer ring 4 to further reinforce the protective sleeve 5.

[0039] The outer ring 4 and the protective sleeve 5 are fitted on the outside of the gas sensor assembly 3, and the dust collection box 6 is distributed at the bottom of the gas sensor assembly 3 to separate the gas sensor assembly 3 from the outside world and prevent external dust, oil, water vapor and other pollutants from contacting the gas sensor assembly 3.

[0040] When the gas sensor assembly 3 is working and increases airflow, external gas enters from the inlet 7 and flows through the small-diameter ventilation pipe 91. The baffle 9 and the second partition ring 61 block the gas, causing the gas to flow along a predetermined path, namely along the path of b, inlet 7, c, ventilation pipe 91, foam blocks 83 in the mesh cylinder 82, and d, thus extending the airflow path. The foam blocks 83 and the dust-absorbing cloth 92 adsorb pollutants, allowing the pollutants in the gas to be adsorbed and settled.

[0041] In summary: The pump-type gas detector of this application has a protective sensor design that separates the sensor from the outside world. The outer ring 4, the protective sleeve 5, and the dust collection box 6 are set on the outside of the gas sensor assembly 3 to achieve the purpose of separating the gas sensor assembly 3 from the outside world, preventing external contaminants such as dust, oil, and water vapor from contacting the gas sensor assembly 3. In addition, the path of the gas in the dust collection box 6 is extended, and the foam blocks 83 and the dust-absorbing cotton cloth 92 adsorb contaminants, so that the contaminants in the gas are adsorbed and settled, which has the function of reducing the contaminants in the gas.

[0042] Although embodiments of the present invention have been shown and described (see the detailed description above), 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 pump-suction gas detector, characterized in that: include A gas detector assembly includes a detector body (1), an alarm light (2), and a gas sensor assembly (3), the gas sensor assembly (3) including a fixedly connected built-in sensor housing (31) and a built-in micropump housing (32); The protective assembly includes an outer sleeve (4) and a protective sleeve (5) that are fitted on the outside of the gas sensor assembly (3). The inner wall of the protective sleeve (5) is provided with a spring plate (52). A pressing post (51) connected to the spring plate (52) is slidably passed through the protective sleeve (5). The top of the spring plate (52) is provided with a protrusion (521). The dust-blocking mechanism includes a dust collection box (6) fixedly connected to the bottom end of the protective sleeve (5), an air inlet (7) communicating with the dust collection box (6), and a sealing block (8) engaging with the dust collection box (6). The sealing block (8) has a lifting rod (81) and a mesh cylinder (82) respectively on its opposite surfaces. The sealing block (8) has a foam block (83) inside the mesh cylinder (82). The dust collection box (6) has a baffle (9) inside. The surface of the baffle (9) is welded with symmetrically distributed ventilation pipes (91). The inner surface of the dust collection box (6) has a second partition ring (61).

2. The pump-suction gas detector according to claim 1, characterized in that: The inner surface of the outer ring (4) is provided with a first partition ring (41), and the center lines of the first partition ring (41) and the outer ring (4) are on the same axis. The protective sleeve (5) and the spring plate (52) are inserted into the annular cavity a formed between the outer ring (4) and the first partition ring (41).

3. The pump-suction gas detector according to claim 1, characterized in that: The inner wall of the outer ring (4) is provided with a concave circular groove (42), and the protrusion (521) cooperates with the groove (42).

4. The pump-suction gas detector according to claim 1, characterized in that: One end of the spring plate (52) is attached to the inner wall of the protective sleeve (5), and there is a gap between the other end of the spring plate (52) and the protective sleeve (5). The inner diameter of the protective sleeve (5) is 1 cm larger than the outer diameter of the cylindrical gas sensor assembly (3).

5. The pump-suction gas detector according to claim 1, characterized in that: A dust-absorbing cotton cloth (92) is attached to the center of the baffle (9).

6. The pump-suction gas detector according to claim 1, characterized in that: The outer diameter of the mesh cylinder (82) is the same as the inner diameter of the ventilation pipe (91). The mesh cylinder (82) corresponds to the ventilation pipe (91). The top of the lifting rod (81) is a spherical structure. The centers of the air inlet (7), the dust collection box (6), the baffle (9), and the second partition ring (61) are on the same axis.

7. The pump-suction gas detector according to claim 1, characterized in that: The gas transport path in the ash collection box (6) is sequentially: direction b, air inlet (7), direction c, ventilation pipe (91), foam block (83) in mesh cylinder (82), and direction d.

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