CN219122140U

CN219122140U - Gas sensor with dismantle perspective window

Info

Publication number: CN219122140U
Application number: CN202222528216.8U
Authority: CN
Inventors: 陈卓; 赵治华; 周宝仓; 张帅文; 朱红瑜; 石璞; 王安标; 郑春华; 潘亚芳
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-06-02
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to a gas sensor with a detachable perspective window, and belongs to the technical field of gas detection. The positioning block positioned on the clamping ring is arranged in the butt joint groove, the positioning block is fixed in the limiting groove through the elastic limiting mechanism, the perspective window is fixed on the shell through the clamping ring, when the perspective window is worn and/or corroded and needs to be replaced, the positioning block is taken out from the butt joint groove through rotating the clamping ring and compressing the chock block, and the structure is convenient for the perspective window to be detached and installed from the shell, and is convenient for replacement and cleaning of the perspective window. The technical problems that the prior perspective window is fixed or is installed on the shell through the set screw, and when the perspective window is corroded or is worn by dust, the replacement and the cleaning are inconvenient are solved.

Description

Gas sensor with dismantle perspective window

Technical Field

The utility model relates to the technical field of gas detection, in particular to a gas sensor with a detachable perspective window.

Background

With the development of economy, china increasingly pays attention to safety production, and the reliability and the accuracy of the gas sensor serving as important detection equipment in the safety production directly concern the safety of the production.

The gas sensor is generally applied in the environment that dust and poisonous and harmful gas content are higher, especially in non-closed environment, dust and harmful gas all have higher speed, lead to gas sensor's casing and perspective window to be very easily corroded by harmful gas and dust wearing and tearing, lead to the perspective window to become fuzzy, gas sensor reading is influenced by the fuzzy perspective window, can not accurately obtain gas sensor's reading, and then need change the perspective window, and current perspective window and casing are the structure as an organic whole be difficult to dismantle, or through holding screw fixed connection, in the environment that dust and poisonous and harmful gas content are high, the screw is very easy to rust, also inconvenient dismantlement, lead to the change of perspective window and wash inconvenient.

Disclosure of Invention

The utility model provides a gas sensor with a detachable perspective window, which aims to solve the technical problems that the existing perspective window is fixed or is arranged on a shell through a set screw, and the replacement and cleaning are inconvenient after the perspective window is corroded or is worn by dust.

The utility model adopts a specific scheme that the gas sensor with the detachable perspective window comprises the perspective window and a shell provided with a mounting hole, wherein the perspective window is positioned in the mounting hole, a sensor element and a display element are arranged in the mounting hole positioned at the inner side of the perspective window, a limit groove and a compression ring for compressing the perspective window are arranged in the mounting hole, and a positioning block is arranged on the compression ring; the spacing groove is the groove of seting up along mounting hole lateral wall circumference, the spacing groove passes through vertical butt joint groove and outside intercommunication, and the spacing groove is divided into left and right sides two parts by the butt joint groove, be provided with the chock that extends to the spacing groove in the butt joint groove, the width of chock is less than the width of butt joint groove, the cell wall of chock and butt joint groove forms the gliding vertical passageway of confession locating piece, the locating piece gets into the spacing inslot on right side along the passageway, be provided with the elasticity stop gear who is connected with the chock in the spacing inslot of left side, elasticity stop gear is with the chock butt on the butt joint groove lateral wall.

As an optimization scheme of the gas sensor with the detachable perspective window, the elastic limiting mechanism comprises a first guide groove, a limiting rod and a spring, wherein the first guide groove is formed in the inner wall of the limiting groove on the left side, one end of the limiting rod is fixedly arranged on the chock, the other end of the limiting rod is slidably arranged in the first guide groove, the spring is sleeved on the limiting rod, two ends of the spring are respectively fixed on the chock and the inner wall of the limiting groove, and under the action of the spring, the chock is abutted to the side wall of the butt joint groove.

As another optimization scheme of the gas sensor with the detachable perspective window, the stop block is further fixedly provided with a baffle plate parallel to the limiting rod, a part of the baffle plate is slidably arranged in a second guide groove formed in the side wall of the mounting hole, the second guide groove is parallel to the first guide groove, and the spring is located between the baffle plate and the side wall of the left limiting groove.

As another optimization scheme of the gas sensor with the detachable perspective window, the baffle is arc-shaped and is arranged on the outer side of the spring in a surrounding mode.

As another optimization scheme of the gas sensor with the disassembly perspective window, the upper part of the plug block is provided with an inclined surface, and the included angle between the inclined surface and the horizontal plane is an acute angle.

As another optimization scheme of the gas sensor with the detachable perspective window, the plug block is an L-shaped block.

As another optimization scheme of the gas sensor with the detachable perspective window, a boss for circumferentially positioning the perspective window is arranged on the circumferential direction of the pressing ring.

As another optimization scheme of the gas sensor with the detachable perspective window, a sealing ring for sealing is arranged between the boss and the perspective window.

As another optimization scheme of the gas sensor with the detachable perspective window, two handles are arranged on the pressure ring, and the connecting line of the two handles is overlapped with the diameter of the pressure ring.

As another optimization scheme of the gas sensor with the detachable perspective window, a gas collecting pipe and a stabilizing seat are arranged below the shell, external threads are formed at two ends of the gas collecting pipe, one end of the gas collecting pipe is connected to the shell through threads, and the other end of the gas collecting pipe is connected to the stabilizing seat through threads.

Advantageous effects

1. According to the gas sensor with the detachable perspective window, the positioning block positioned on the clamping ring is arranged in the butt joint groove, the positioning block is fixed in the limiting groove through the elastic limiting mechanism, the clamping ring is used for fixing the perspective window on the shell, when the perspective window is worn and/or corroded and needs to be replaced, the clamping ring is rotated and the plug block is compressed, so that the positioning block is taken out of the butt joint groove, and the structure is convenient for the disassembly and the installation of the perspective window from the shell, and is convenient for the replacement and the cleaning of the perspective window.

2. According to the other embodiment of the gas sensor with the detachable perspective window, threads are formed on two ends of the gas collecting tube, so that one end of the gas collecting tube is arranged on the shell in a threaded mode, the other end of the gas collecting tube is arranged on the stable seat, the detachable connection of the gas shell, the gas collecting tube and the stable seat is facilitated, the installation and the detachment are facilitated, and the transportation space is saved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the housing;

FIG. 3 is an enlarged partial cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of the positioning block of FIG. 2 in an installed state;

FIG. 5 is a schematic view of the structure of the clamping ring;

FIG. 6 is a cross-sectional view of a clamp ring;

FIG. 7 is a partially enlarged schematic illustration of example 3;

in the accompanying drawings: 1. the device comprises a shell, 101, a mounting hole, 102, a limit groove, 103, a butt joint groove, 104, a second guide groove, 2, a perspective window, 3, a plug, 301, a baffle, 302, a channel, 303, a handle, 4, a compression ring, 401, a positioning block, 402, a boss, 404, a handle, 5, an elastic limit mechanism, 501, a first guide groove, 502, a limit rod, 503, a spring, 6, a gas collection tube, 7, a stable seat, 8 and a sealing ring.

Detailed Description

Example 1

As shown in fig. 1, 2 and 3, the utility model relates to a gas sensor with a detachable perspective window, which comprises a perspective window 2 and a shell 1, wherein the shell 1 is cylindrical, a circular mounting hole 101 is formed in the shell 1, the perspective window 2 is positioned in the mounting hole 101, and a sensor element and a display element are mounted in the mounting hole 101 positioned at the inner side of the perspective window 2. The mounting hole 101 is internally provided with a limit groove 102 and a pressing ring 4 for pressing the perspective window 2, the outer edge of the pressing ring 4 is at least fixedly provided with two positioning blocks 401, and the connecting line of the two positioning blocks 401 is coincident with the diameter of the pressing ring 4. The limiting groove 102 is a groove formed along the circumferential direction of the side wall of the mounting hole 101, the side wall of the mounting hole 101 is further provided with a vertical butt joint groove 103, the butt joint groove 103 is perpendicular to the limiting groove 102, the top end of the butt joint groove 103 is flush with the top surface of the mounting hole 101, namely, the limiting groove 102 is communicated with the outside through the vertical butt joint groove 103. Meanwhile, the limiting groove 102 divides the limiting groove 102 into a left part and a right part, namely a left limiting groove 102 and a right limiting groove 102.

The butt joint groove 103 is internally provided with a strip-shaped plug block 3 extending to the limit groove 102, the width of the plug block 3 is smaller than that of the butt joint groove 103, the groove walls of the plug block 3 and the butt joint groove 103 form a vertical channel 302 for the locating block 401 to slide, the left limit groove 102 is internally provided with an elastic limit mechanism 5 sliding left and right along the limit groove 102, the elastic limit mechanism 5 is fixedly connected with the plug block 3, and the plug block 3 is abutted to the side wall of the butt joint groove 103 under the action of the elastic limit mechanism 5.

As shown in fig. 4, during installation, the plug 3 is moved to the left side wall of the butt joint groove 103 to expose the channel 302, and the pressing ring 4 drives the positioning block 401 to enter the right side limit groove 102 along the channel 302, so as to prevent the positioning block 401 from shaking in the right side limit groove 102, the shape of the positioning block 401 is the same as that of the right side limit groove 102, and the positioning block 401 is completely clamped in the right side limit groove 102. The stopper 3 is loosened, and the elastic limiting mechanism 5 abuts the stopper 3 on the right side wall of the abutting groove 103. The positioning block 401 is fixed in the limit groove 102 on the right side, so that the pressing ring 4 is fixed in the mounting hole 101, and the perspective window 2 is pressed in the mounting hole 101.

As shown in fig. 3 and 4, the elastic limiting mechanism 5 includes a first guiding groove 501, a limiting rod 502 and a spring 503, the first guiding groove 501 is formed on the inner wall of the left limiting groove 102, the first guiding groove 501 is parallel to the limiting groove 102, one end of the limiting rod 502 is fixedly mounted on the chock 3, the other end of the limiting rod 502 is slidably mounted in the first guiding groove 501, the spring 503 is sleeved on the limiting rod 502, two ends of the spring 503 are respectively fixed on the chock 3 and the inner wall of the limiting groove 102, when the chock 3 is shifted leftwards, the chock 3 compresses the spring 503 to move leftwards, meanwhile, the limiting rod 502 slides into the first guiding groove 501, when the chock 3 is released, the spring 503 retracts, the chock 3 is driven to move rightwards, and the limiting rod 502 is driven to extend from the first guiding groove 501 until the chock 3 is abutted on the right side wall of the abutting groove 103.

In order to prevent external air from entering the limit groove 102 along the butt groove 103, as shown in fig. 3 and 4, an arc-shaped baffle 301 parallel to the limit rod 502 is further fixed on the plug 3, and a spring 503 is enclosed between the baffle 301 and the side wall of the left limit groove 102. In order to ensure that air does not enter the limiting groove 102 when the plug 3 slides leftwards, a second guide groove 104 parallel to the first guide groove 501 is further formed in the side wall of the mounting hole 101, and a part of the baffle 301 is slidably arranged in the second guide groove 104.

In order to facilitate pulling the chock 3 to the left, an inclined surface is provided at the upper part of the chock 3, the inclined surface faces to the right, and preferably the inclined surface 1032 forms an acute angle with the horizontal plane. When the device is used, the tool is used for vertically acting on the inclined plane, and the plug 3 moves leftwards under the pressure action of the tool. Meanwhile, in order to prevent the working pressure from being too high, the limiting groove 102 is extruded and deformed, the plug 3 is preferably an L-shaped block, and the plug is forced to move leftwards along the limiting groove 102.

In order to better install the perspective window in the mounting hole 101, as shown in fig. 5, a boss 402 for circumferentially positioning the perspective window 2 is arranged on the circumferential direction of the compression ring 4, and a sealing ring 8 for sealing is arranged between the boss 402 and the perspective window 2, and the sealing ring 8 is an annular rubber ring. As shown in fig. 6, during installation, the sealing ring 8 is first sleeved around the perspective window 2, then the perspective window 2 sleeved with the sealing ring 8 is installed in the boss 402 in an interference manner, then the compression ring 4 is installed in the limit groove 102, and the perspective window 2 is fixedly installed in the installation hole 101.

In order to facilitate better detaching the pressing ring 4, two handles 404 are arranged on the pressing ring 4, and the connecting line of the two handles 404 is overlapped with the diameter of the pressing ring 4, when in use, the pressing ring 4 is rotated leftwards, so that the positioning block 401 presses the chock 3 leftwards, the chock 3 is caused to press the elastic limiting mechanism 5, the channel 302 is exposed, then the positioning block 401 is moved towards the top end direction of the butting groove 103 by lifting the handles 404 towards the top end direction of the butting groove 103, the pressing ring 4 is driven to move towards the top end direction of the butting groove 103, the pressing ring 4 is taken out from the butting groove 103, and the perspective window 2 is taken out from the mounting hole 101. The transparent window 2 is replaced or cleaned.

Example 2

The embodiment is an improvement scheme based on embodiment 1, and the main structure of the embodiment is the same as that of embodiment 1, and the improvement points are that: as shown in fig. 1, a gas collecting tube 6 and a stabilizing seat 7 are arranged below the shell 1, the gas collecting tube 6 is used for collecting gas to be detected, the gas to be detected enters the shell 1 along the gas collecting tube 6, external threads are formed at two ends of the gas collecting tube 6 for facilitating transportation of the gas sensor with the disassembly perspective window, and two ends of the gas collecting tube 6 are respectively in threaded connection with the shell 1 and the stabilizing seat 7. During transportation, the gas collection tube 6 and the stable seat 7 are detached from the shell 1, so that the internal space of the transportation box is saved, and the transportation efficiency is improved.

Example 3

As shown in fig. 7, the utility model relates to a gas sensor with a detachable perspective window, which comprises a perspective window 2 and a shell 1, wherein the shell 1 is cylindrical, a circular mounting hole 101 is formed in the shell 1, the perspective window 2 is positioned in the mounting hole 101, and a sensor element and a display element are mounted in the mounting hole 101 positioned at the inner side of the perspective window 2. The mounting hole 101 is internally provided with a limit groove 102 and a pressing ring 4 for pressing the perspective window 2, the outer edge of the pressing ring 4 is at least fixedly provided with two positioning blocks 401, and the connecting line of the two positioning blocks 401 is coincident with the diameter of the pressing ring 4. The spacing groove 102 is the groove of seting up along mounting hole 101 lateral wall circumference, has still seted up vertical butt joint groove 103 on the mounting hole 101 lateral wall, and butt joint groove 103 perpendicular to spacing groove 102, and the top of butt joint groove 103 flushes with the top surface of mounting hole 101, and spacing groove 102 communicates through vertical butt joint groove 103 and outside promptly, and the shape of locating piece 401 is the same with the spacing groove 102 shape that is located butt joint groove 103 right side. When in use, the positioning block 401 enters the limit groove 102 along the butt joint groove 103, and the pressing ring 4 is rotated rightwards, so that the positioning block 401 enters the limit groove 102 positioned on the right side of the butt joint groove 103.

The butt joint groove 103 is internally provided with a strip-shaped plug block 3 extending to the limit groove 102, the plug block 3 is made of rubber, the width of the plug block 3 is larger than that of the butt joint groove 103, and the top end of the plug block 3 is provided with a handle 303. After the positioning block 401 enters the limit groove 102 along the butt joint groove 103, the pressing ring 4 is rotated rightward, so that the positioning block 401 enters the limit groove 102 positioned on the right side of the butt joint groove 103, the plug 3 is plugged into the butt joint groove 103, the positioning block 401 is fixed in the limit groove 102, and the positioning block 401 is matched with the limit groove 102 and cannot shake due to the fact that the shapes of the positioning block 401 and the limit groove 102 positioned on the right side of the butt joint groove 103 are the same. When the perspective window 2 needs to be replaced, the plug 3 is pulled out of the butt joint groove 103 through the handle 303, the pressing ring 4 is rotated leftwards, the positioning block 401 is driven to enter the limit groove 102 below the butt joint groove 103, then the pressing ring 4 is moved towards the top end direction of the butt joint groove 103, the positioning block 401 is driven to move out of the butt joint groove 103, the pressing ring 4 is detached from the mounting hole 101, and the detachment and replacement of the perspective window 2 are realized because the pressing ring 4 is used for pressing the perspective window 2.

In order to facilitate better removal of the pressing ring 4, two handles 404 are arranged on the pressing ring 4, and the connecting line of the two handles 404 coincides with the diameter of the pressing ring 4, when the positioning block 401 enters the limiting groove 102 below the docking groove 103, the pressing ring 4 is lifted by the handles 404 to move towards the top end direction of the docking groove 103, so that the positioning block 401 is driven to move out of the docking groove 103, and the pressing ring 4 is more convenient to remove.

Claims

1. The utility model provides a gas sensor with dismantle perspective window, includes perspective window (2) and sets up casing (1) of mounting hole (101), and perspective window (2) are located mounting hole (101), are provided with sensor element and display element in mounting hole (101) that are located perspective window (2) inboard, its characterized in that: a limiting groove (102) and a pressing ring (4) for pressing the perspective window (2) are arranged in the mounting hole (101), and a positioning block (401) is arranged on the pressing ring (4); the spacing groove (102) is the groove of seting up along mounting hole (101) lateral wall circumference, spacing groove (102) are through vertical butt joint groove (103) and outside intercommunication, and spacing groove (102) are divided into left and right sides two parts by butt joint groove (103), be provided with in butt joint groove (103) and extend to the chock block (3) of spacing groove (102), the width of chock block (3) is less than the width of butt joint groove (103), the cell wall of chock block (3) and butt joint groove (103) forms vertical passageway (302) that supplies locating piece (401) to slide, locating piece (401) are provided with in spacing groove (102) on the right side along passageway (302), be provided with in spacing groove (102) on the left side and be connected with chock block (3) elasticity stop mechanism (5), elasticity stop mechanism (5) are with chock block (3) butt on butt joint groove (103) lateral wall.

2. The gas sensor with detachable perspective window according to claim 1, wherein: the elastic limiting mechanism (5) comprises a first guide groove (501), a limiting rod (502) and a spring (503), wherein the first guide groove (501) is formed in the inner wall of the left limiting groove (102), one end of the limiting rod (502) is fixedly mounted on the plug block (3), the other end of the limiting rod (502) is slidably mounted in the first guide groove (501), the spring (503) is sleeved on the limiting rod (502), two ends of the spring (503) are respectively fixed on the plug block (3) and the inner wall of the limiting groove (102), and the plug block (3) is abutted to the side wall of the butt joint groove (103) under the action of the spring (503).

3. The gas sensor with detachable perspective window according to claim 2, wherein: the stopper (3) is further fixedly provided with a baffle (301) parallel to the limiting rod (502), a part of the baffle (301) is slidably arranged in a second guide groove (104) formed in the side wall of the mounting hole (101), the second guide groove (104) is parallel to the first guide groove (501), and the spring (503) is located between the baffle (301) and the side wall of the left limiting groove (102).

4. A gas sensor with a detachable perspective window according to claim 3, characterized in that: the baffle (301) is arc-shaped, and the baffle (301) is arranged on the outer side of the spring (503) in a surrounding mode.

5. The gas sensor with detachable perspective window according to claim 1, wherein: the upper portion of chock (3) is provided with the inclined plane, and the contained angle of inclined plane (1032) and horizontal plane is the acute angle.

6. The gas sensor with detachable perspective window according to claim 5, wherein: the plug block (3) is an L-shaped block.

7. The gas sensor with detachable perspective window according to claim 1, wherein: a boss (402) for circumferentially positioning the perspective window (2) is arranged on the circumferential direction of the compression ring (4).

8. The gas sensor with detachable perspective window of claim 7, wherein: a sealing ring (8) for sealing is arranged between the boss (402) and the perspective window (2).

9. The gas sensor with detachable perspective window according to claim 1, wherein: two handles (404) are arranged on the compression ring (4), and the connecting line of the two handles (404) is overlapped with the diameter of the compression ring (4).

10. The gas sensor with detachable perspective window according to claim 1, wherein: the utility model discloses a gas collection pipe, including casing (1), gas collection pipe (6) and firm seat (7) are provided with below casing (1), and external screw thread has all been seted up at gas collection pipe (6) both ends, and gas collection pipe (6) one end threaded connection is on casing (1), and gas collection pipe (6) other end threaded connection is in firm seat (7).