Methane gas detector with sensor having self-cleaning structure

Abstract

The utility model discloses a methane gas detector with a sensor having a self-cleaning structure, which comprises a detector main body and a handle, an infrared laser detector is installed in the detector main body, one side of the detector main body is fixedly connected with an infrared laser focus lens, and the other side of the detector main body is fixedly connected with a sensor. The detector body is provided with an infrared laser focus lens, the bottom of the detector body is provided with a cleaning part used for cleaning the infrared laser focus lens, and the outer side of the handle is provided with an attaching part used for preventing the detector body from falling off. The problems that when an existing methane gas detector is used, although an infrared detection laser is matched with an infrared laser focus lens to detect the concentration of methane gas, the infrared laser focus lens is prone to being stained with dust or impurities, the dust and the impurities can easily obtain a methane detection result, the result is not accurate, and the detection efficiency is high are solved. And therefore, the practicability is relatively poor.

Description

TECHNICAL FIELD

[0001] The utility model relates to a methane detection instrument technical field, concretely is a methane gas detector with self -cleaning structure of sensor. BACKGROUND

[0002] Methane is a nonpolar molecule with tetrahedral structure, and is the simplest organic matter. Methane is the main component of conventional natural gas, shale gas, combustible ice, etc. Methane leakage detector is a commonly used term in engineering, mainly used for detecting whether methane gas leaks. It emits an infrared laser to the detection point, which can quickly measure the gas concentration between the detection point and the methane detector.

[0003] The existing patent CN209727741U discloses a kind of shell structure of hand-held laser methane gas telemeter, including shell, handle, recess, friction line, switch button, infrared detection laser, laser button, support plate, reflector, light machine lens, infrared laser focusing mirror, display screen button, indicating laser, display screen, operation button and charging hole.The utility model has the beneficial effects that: the shell structure of the hand-held laser methane gas telemeter is reasonably designed, the handle is arranged on the lower surface of the shell, and the shell and the handle are arranged in T-shaped structure, which is convenient for users to detect methane gas, easy to carry, more beautiful, and also improves the use effect of the device.The side surface of the lower half of the handle is provided with a recess, and the inside and the periphery of the recess are provided with a friction line, which is convenient for the operator to hold the device, easy to use, so that the design of the shell structure is more reasonable.

[0004] Based on the above patent search, and combined with the methane gas detector in the prior art, it is found that the existing methane gas detector, although the infrared detection laser cooperates with the infrared laser focusing mirror to detect the concentration of methane gas, dust or impurities is easily attached to the infrared laser focusing mirror, which affects the detection result of methane, and the result is inaccurate, thereby reducing the practicability. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of methane gas detector with self-cleaning structure of sensor to solve the problem that the existing methane gas detector in the above background art, although the infrared detection laser cooperates with the infrared laser focusing mirror to detect the concentration of methane gas, dust or impurities is easily attached to the infrared laser focusing mirror, which affects the detection result of methane, and the result is inaccurate, thereby reducing the practicability.

[0006] In order to achieve the above object, the utility model provides following technical scheme: a methane gas detector with self -cleaning structure's sensor has handle and detector main part, the inside installation of detector main part has infrared laser detector, one side of detector main part is fixedly connected with infrared laser focusing mirror, the bottom of detector main part is equipped with the cleaning part for cleaning infrared laser focusing mirror, the outside of handle is equipped with the fitting part for preventing detector main body from falling;

[0007] The cleaning part includes a fixed block connected to the bottom of the detector main body, a fixed plate connected to the bottom of the fixed block, a motor connected to one side of the fixed plate, a drive shaft connected to the output end of the motor, a fixed disc connected to one end of the drive shaft, an eccentric rod connected to one side of the fixed disc, a fixed shaft connected to one side of the fixed block, a first swing plate connected to the fixed shaft, a second swing plate connected to the bottom of the first swing plate, a sliding hole opened in the second swing plate, a connecting hole opened in one side of the first swing plate, a connecting plate arranged in the connecting hole, a scraper connected to one side of the connecting plate, and a connecting part for replacing the scraper, the drive shaft is rotatably connected to the fixed plate, the first swing plate is rotatably connected to the fixed shaft, and the eccentric rod is slidably connected to the sliding hole.

[0008] Preferably, the fitting part includes two support rods connected to the two sides of the handle respectively, a vertical plate connected to the support rods, grooves opened in the two sides of the vertical plate respectively, a push rod connected to the grooves, a first spring connected to one end of the push rod, a fitting plate connected to the other end of the push rod, and four arc-shaped grooves evenly arranged on the fitting plate, the push rod is slidably connected to the groove.

[0009] Preferably, the connecting part includes a through hole opened in the top of the connecting hole, a clamping hole opened in the top of the connecting plate, a clamping rod connected to the through hole, a pulling plate connected to the top of the clamping rod, and a second spring connected to the bottom of the pulling plate, the clamping rod is slidably connected to the through hole, and the clamping rod is inserted into the clamping hole.

[0010] Preferably, a limiting groove is opened in one side of the push rod, a limiting rod is fixedly connected to the inner wall of the groove, and the limiting rod is slidably connected to the limiting groove.

[0011] Preferably, a guide groove is opened in one side of the fixed plate, guide blocks are slidably connected to the two sides in the guide groove, and the guide blocks are fixedly connected to the fixed disc.

[0012] Preferably, a protective pad is arranged on the inner wall of the arc-shaped groove, the outer side of the protective pad is arc-shaped, and the protective pad is adhered to the arc-shaped groove.

[0013] Preferably, the cross section of the push rod is T-shaped, and the cross section of the groove is T-shaped.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. By setting the probe body, handle, infrared laser detector, infrared laser focusing mirror and cleaning components, the motor can drive the fixed disc to rotate, and then the eccentric rod can be rotated, and then the second swing plate can drive the first swing rod to reciprocating swing along the fixed shaft, and then the scraper can be swung, the scraper contacts the infrared laser focusing mirror, and the outer surface of the infrared laser focusing mirror can be cleaned, and the impurities and dust on it are cleaned down, preventing the accuracy of the detection result from being affected, and the practicability of the device can be greatly improved.

[0016] 2. By setting the fitting component, the fingers of the detector can be inserted between the handle and the fitting plate, and then the fitting plate can be moved, so that the first spring is extruded and deformed, the thrust generated by the deformation of the first spring can push the fitting plate to fit the fingers, and then the situation that the probe body falls off when the detector relaxes can be prevented, the probe body can be protected from falling, and the practicability can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a three-dimensional structure schematic diagram;

[0018] Figure 2 The utility model provides a front view;

[0019] Figure 3 The utility model provides a Figure 2 The utility model provides a sectional view of A-A;

[0020] Figure 4 The utility model provides a Figure 3 The utility model provides an enlarged view of B;

[0021] Figure 5 The utility model provides a Figure 3 The utility model provides an enlarged view of C;

[0022] Figure 6 The utility model provides a Figure 3 The utility model provides an enlarged view of D.

[0023] In the figure: 1, detector main body; 11, handle; 12, infrared laser detector; 13, infrared laser focusing mirror; 21, fixed block; 22, fixed plate; 23, motor; 24, drive shaft; 25, fixed disc; 26, eccentric rod; 27, fixed shaft; 28, first swing plate; 29, second swing plate; 30, sliding port; 31, connecting port; 32, connecting plate; 33, scraper; 41, support rod; 42, vertical plate; 43, recess; 44, push rod; 45, first spring; 46, fit plate; 47, arc-shaped groove; 51, through port; 52, clamping port; 53, clamping rod; 54, pull plate; 55, second spring; 61, limiting groove; 62, limiting rod; 71, guide groove; 72, guide block; 81, protective pad. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6The utility model provides a technical scheme: a methane gas detector with self -cleaning structure's sensor has, including detector main body 1 and handle 11, infrared laser detector 12 is installed in detector main body 1 inside, and detector main body 1 one side is fixedly connected with infrared laser focusing mirror 13, and the cleaning component for cleaning infrared laser focusing mirror 13 is equipped in the bottom of detector main body 1, and the fitting component for preventing detector main body 1 from falling is equipped on the outside of handle 11, and the cleaning component includes the fixed block 21 connected with the bottom of detector main body 1, the fixed plate 22 connected with the bottom of fixed block 21, the motor 23 connected with one side of fixed plate 22, the drive shaft 24 connected with the output end of motor 23, the fixed disc 25 connected with one end of drive shaft 24, the eccentric rod 26 connected with one side of fixed disc 25, the fixed shaft 27 connected with one side of fixed block 21, the first swing plate 28 connected with fixed shaft 27, the second swing plate 29 connected with the bottom of first swing plate 28, the sliding mouth 30 opened on the second swing plate 29, the connecting mouth 31 opened on one side of first swing plate 28, the connecting plate 32 in connecting mouth 31, the scraper 33 connected with one side of connecting plate 32 and the connecting component for replacing scraper 33, drive shaft 24 is rotatably connected with fixed plate 22, first swing plate 28 is rotatably connected with fixed shaft 27, eccentric rod 26 is slidably connected with sliding mouth 30, and motor 23 can drive drive shaft 24 and fixed disc 25 to rotate, and then can make eccentric rod 26 rotate, and then can drive second swing plate 29 and first swing plate 28 to swing reciprocating along the axis of fixed shaft 27, and then can drive scraper 33 to swing, and scraper 33 can scrape the impurity dust etc. on infrared laser focusing mirror 13, guarantee its light transmission performance, and then can improve the accuracy of detection result, and the connecting component includes the through -hole 51 opened in the top of connecting mouth 31, the bayonet 52 opened in the top of connecting plate 32, the clamping rod 53 connected with through -hole 51, the pull plate 54 connected with the top of clamping rod 53 and the second spring 55 connected with the bottom of pull plate 54, clamping rod 53 is slidably connected with through -hole 51, clamping rod 53 is inserted with bayonet 52, and by pulling pull plate 54, second spring 55 can be deformed, simultaneously makes clamping rod 53 separate from bayonet 52, can conveniently detach connecting plate 32 and the scraper 33 of abrasion from first swing plate 28, conveniently replace new scraper 33 subsequently, and the guide slot 71 is opened in one side of fixed plate 22, and the guide block 72 is slidably connected in the both sides in guide slot 71, and the guide block 72 is fixedly connected with fixed disc 25, and fixed disc 25 can drive guide block 72 to rotate in guide slot 71 simultaneously, can prevent fixed disc 25 from appearing the situation of swinging, guarantees the stable rotation of fixed disc 25.

[0026] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5The fitting part comprises a supporting rod 41 connected to both sides of the handle 11 respectively, a vertical plate 42 connected to the supporting rod 41, a groove 43 respectively opened on both sides of the vertical plate 42, a push rod 44 connected to the groove 43, a first spring 45 connected to one end of the push rod 44, a fitting plate 46 connected to the other end of the push rod 44, and four arc-shaped grooves 47 evenly arranged on the fitting plate 46. The push rod 44 is in sliding connection with the groove 43, and the two ends of the first spring 45 are fixedly connected with the push rod 44 and the inner wall of the groove 43 respectively. When holding, the fingers can be inserted between the handle 11 and the fitting plate 46, the fingers can push the fitting plate 46 to move the push rod 44, and then the first spring 45 can be extruded to deform. The first spring 45 can push the fitting plate 46 to fit and fix the fingers, which can prevent the detector main body 1 from falling accidentally. The inner wall of the arc-shaped groove 47 is provided with a protective pad 81, the outer side of the protective pad 81 is arc-shaped, the protective pad 81 is adhered to the arc-shaped groove 47, and the protective pad 81 can play a protective buffering role, which can improve the holding comfort of the detection personnel. A limiting groove 61 is opened on one side of the push rod 44, a limiting rod 62 is fixedly connected to the inner wall of the groove 43, and the limiting rod 62 is in sliding connection with the limiting groove 61. The limiting rod 62 can limit the moving distance of the push rod 44, which prevents the push rod 44 from excessively extruding the second spring 55 and causing damage. The cross-sectional shape of the push rod 44 is T-shaped, and the cross-sectional shape of the groove 43 is T-shaped, which can limit the push rod 44 and prevent the push rod 44 from being separated from the groove 43.

[0027] Working principle: when working, first pull the pull plate 54, which can drive the second spring 55 to deform, and can drive the clamping rod 53 to move up, then put the connecting plate 32 into the connecting port 31, loosen the pull plate 54, so that the second spring 55 resets to drive the clamping rod 53 to clamp into the clamping port 52, and then the scraper 33 can be fixed, when the infrared laser focusing mirror 13 is relatively dirty, the motor 23 can be started, the motor 23 can drive the driving shaft 24 to rotate, the driving shaft 24 can drive the fixed disc 25 to rotate, the fixed disc 25 can make the eccentric rod 26 rotate synchronously, the eccentric rod 26 can drive the second swing plate 29 and the first swing plate 28 to reciprocating swing along the axis of the fixed shaft 27, and then the scraper 33 can be driven to swing, and the impurities and dust on the infrared laser focusing mirror 13 can be scraped off by the scraper 33, so as to prevent the accuracy of the detection result from being affected, after cleaning, when the scraper 33 rotates to the side of the infrared laser focusing mirror 13, the motor 23 is turned off, so that the scraper 33 is located on the side and does not affect the normal work of the infrared laser detector 12, then the finger can be inserted between the fitting plate 46 and the handle 11, the finger extrudes the fitting plate 46, the fitting plate 46 drives the push rod 44 to move, the push rod 44 can drive the first spring 45 to deform, the pushing force generated by the deformation of the first spring 45 can push the fitting plate 46 to limit and fix the finger, and then the accidental falling of the probe body 1 can be prevented, the above is the working process of the whole device, and the contents not described in detail in the specification all belong to the prior art known by the person skilled in the art.

[0028] Although the embodiments of the present application have been shown and described, it should 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 the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A methane gas detector with a sensor having a self-cleaning structure, comprising a detector main body (1) and a handle (11), characterized in that: The inside of the detector body (1) is provided with an infrared laser detector (12), one side of the detector body (1) is fixedly connected with an infrared laser focusing mirror (13), and the bottom of the detector body (1) is provided with a cleaning component for cleaning the infrared laser focusing mirror (13); the outer side of the handle (11) is provided with a fitting component for preventing the detector body (1) from falling. The cleaning component comprises a fixed block (21) connected with the bottom of the detector body (1), a fixed plate (22) connected with the bottom of the fixed block (21), a motor (23) connected with one side of the fixed plate (22), a drive shaft (24) connected with the output end of the motor (23), a fixed disc (25) connected with one end of the drive shaft (24), an eccentric rod (26) connected with one side of the fixed disc (25), a fixed shaft (27) connected with one side of the fixed block (21), a first swing plate (28) connected with the fixed shaft (27), a second swing plate (29) connected with the bottom of the first swing plate (28), a sliding hole (30) formed in the second swing plate (29), a connecting hole (31) formed in one side of the first swing plate (28), a connecting plate (32) arranged in the connecting hole (31), a scraper (33) connected with one side of the connecting plate (32), and a connecting component for replacing the scraper (33); the drive shaft (24) is rotatably connected with the fixed plate (22), the first swing plate (28) is rotatably connected with the fixed shaft (27), and the eccentric rod (26) is slidably connected with the sliding hole (30).

2. The methane gas detector having a self-cleaning structure according to claim 1, wherein: The fitting component comprises two supporting rods (41) connected with the two sides of the handle (11) respectively, a vertical plate (42) connected with the supporting rods (41), two recesses (43) formed in the two sides of the vertical plate (42) respectively, a push rod (44) connected with the recesses (43), a first spring (45) connected with one end of the push rod (44), a fitting plate (46) connected with the other end of the push rod (44), and four arc-shaped grooves (47) evenly arranged on the fitting plate (46); the push rod (44) is slidably connected with the recesses (43).

3. The methane gas detector having a self-cleaning structure according to claim 1, wherein: The connecting component comprises a through hole (51) formed in the top of the connecting hole (31), a clamping hole (52) formed in the top of the connecting plate (32), a clamping rod (53) connected with the through hole (51), a pulling plate (54) connected with the top of the clamping rod (53), and a second spring (55) connected with the bottom of the pulling plate (54); the clamping rod (53) is slidably connected with the through hole (51), and the clamping rod (53) is inserted into the clamping hole (52).

4. The methane gas detector having a self-cleaning structure according to claim 2, wherein: One side of the push rod (44) is provided with a limiting groove (61), and a limiting rod (62) is fixedly connected with the inner wall of the recess (43); the limiting rod (62) is slidably connected with the limiting groove (61).

5. The methane gas detector having a self-cleaning structure according to claim 1, wherein: One side of the fixed plate (22) is provided with a guide groove (71), and two guide blocks (72) are slidably connected with the two sides in the guide groove (71); the guide blocks (72) are fixedly connected with the fixed disc (25).

6. The methane gas detector having a self-cleaning structure according to claim 2, wherein: The inner wall of the arc-shaped groove (47) is provided with a protective pad (81), the outer side of the protective pad (81) is arc-shaped, and the protective pad (81) is bonded with the arc-shaped groove (47).

7. The methane gas detector having a self-cleaning structure according to claim 2, wherein: The cross-sectional shape of the push rod (44) is T-shaped, and the cross-sectional shape of the groove (43) is T-shaped.

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