Toxic gas detector with replaceable sensor

Abstract

The utility model relates to the technical field of gas detectors, in particular to a toxic gas detector with a replaceable sensor, which comprises a detector, a connecting piece is fixedly mounted at the lower end of the detector, a frame is fixedly mounted at the bottom of the connecting piece, and a filter shell is fixedly mounted at the bottom of the frame. And a limiting plate is slidably connected into the frame body. According to the utility model, the threaded rod is loosened from the screw hole, so that a worker can rotate the adjusting screw rod to disengage the pressing strip from the positioning groove, and then the threaded rod is matched with the screw hole, so that the worker can use the adjusting screw rod to match the pressing strip with the through groove, and the worker can pull the pulling plate to take out the fixing plate from the interior of the frame body; the sensor can be conveniently replaced by a person through the assembling opening, the pulling plate can be stably embedded with the frame on the side face of the frame body through the cooperation of the clamping block and the clamping groove, and the stability and reliability of the sensor installed on the fixing plate are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detector technical field especially relates to a poisonous gas detector of replaceable sensor. BACKGROUND

[0002] Toxic gas is a toxic chemical substance in gaseous state or extremely volatile at normal temperature and pressure, which comes from industrial pollution, combustion of coal and petroleum and decomposition of biological materials, has stimulating effect on respiratory tract, is easy to be inhaled and poisoned, and includes ammonia, ozone, nitrogen dioxide, sulfur dioxide, carbon monoxide, hydrogen sulfide and photochemical smog, etc. The toxic gas detector plays a vital role in people's daily life and industrial production, and accurate measurement of toxic and harmful gas leakage in the surrounding environment is of great significance to protect people's health and property safety. The announcement number: CN215493431U discloses a kind of toxic gas detector, including detector body, sensor and connecting piece, the sensor lower end is fixed with filter shell, the filter shell both sides are all set with through slot, the through slot is fixed with filter plate, the filter shell lower side is fixed with fixed bottom plate, the fixed bottom plate lower side middle part is equipped with swivel ring, the swivel ring upper side is fixed with screw rod, the screw rod is slidably extended to the inside of filter shell, and its upper end is rotatably connected with sensor bottom end, the screw rod surface is screwed with threaded sleeve, the threaded sleeve both ends are symmetrically equipped with cleaning assembly;Through the cooperation of swivel ring, screw rod and threaded sleeve, the cleaning assembly at both ends is driven to move up and down, the cleanliness of filter plate surface is improved, and the detection accuracy can be effectively improved when the device is used, so as to better monitor. UTILITY MODEL CONTENTS

[0003] The utility model aims at solving the technical problem in the above background art.

[0004] This utility model adopts the following technical solution: a toxic gas detector with replaceable sensors, including a detector, a connector fixedly installed at the lower end of the detector, a frame fixedly installed at the bottom of the connector, a filter shell fixedly installed at the bottom of the frame, a limit plate slidably connected inside the frame, a fixing plate fixedly installed on the surface of the limit plate, a pull plate fixedly installed on the side of the fixing plate, a protrusion fixedly installed on the surface of the pull plate, a sliding groove formed inside the protrusion, a locking block slidably connected inside the sliding groove, and a locking block fixedly connected to the sliding groove. A spring is fixedly connected to the frame. A frame is fixedly installed on the side of the frame. A slot is opened on the side of the frame. A sensor is fixedly installed on the inner top surface of the fixing plate. A rotating ring is rotatably connected inside the frame on the side opposite to the pull plate. An adjusting screw is threadedly connected inside the rotating ring. A pressure strip is rotatably connected to the end of the adjusting screw. A groove is opened on the surface of the limiting plate. A through groove and a positioning groove are opened on the surface of the limiting plate. A threaded groove is opened inside the adjusting screw. A threaded rod is threadedly connected inside the threaded groove. A screw hole is opened inside the pressure strip.

[0005] Preferably, the positions of the locking blocks and the locking slots correspond, and the locking blocks are engaged inside the locking slots. There are two sets of locking blocks, symmetrically distributed on the surface of the pull plate. Here, the engagement of the locking blocks with the locking slots ensures that the pull plate can stably fit against the frame side of the housing, thereby guaranteeing the stability and reliability of the sensor mounted on the fixed plate.

[0006] Preferably, the bottom of the fixing plate has an assembly opening that corresponds to the position of the sensor. Here, the fixing plate can be pulled out from inside the frame by a pull plate. The assembly opening simplifies the installation and removal process of the sensor, and facilitates the replacement and maintenance of the sensor.

[0007] Preferably, there are two sets of both the through-slots and the positioning slots. These two sets of through-slots and positioning slots are symmetrically distributed on the surface of the limiting plate, and the through-slots and positioning slots are arranged perpendicularly to each other. This allows the pressure strip to enter the inner side of the limiting plate through the through-slots, facilitating the fitting of the pressure strip with the positioning slots. Furthermore, the perpendicular arrangement of the through-slots and positioning slots increases the stability and accuracy of the structure.

[0008] Preferably, the end shape of the pressure strip matches the shape of the through groove and the positioning groove, wherein the through groove penetrates the interior of the limiting plate. This allows the pressure strip to stably engage with the limiting plate.

[0009] Preferably, the filter shell is fixedly installed with filter screens on both sides, the filter screens are rotatably connected with rotating shafts, and the surfaces of the ends of the rotating shafts extending out of the filter screens are fixedly installed with cleaning brushes.

[0010] Preferably, the bottom of the filter shell is rotatably connected with a rotating rod, the bottom end of the rotating rod is fixedly installed with a rotating head, the top end of the rotating rod is fixedly installed with a driving bevel gear, the surface of the rotating shaft is fixedly installed with a driven bevel gear, and the driving bevel gear and the driven bevel gear are in meshing transmission.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that:

[0012] 1、The threaded rod is loosened from the screw hole, so that personnel can rotate and adjust the screw rod, the pressing strip can be disengaged from the positioning groove, and then the threaded rod is matched with the screw hole, so that personnel can use the adjusting screw rod to match the pressing strip with the slot, so that personnel can pull the pull plate to take out the fixed plate from the frame body, the assembly opening is convenient for personnel to replace the sensor, the pull plate can be stably embedded with the frame on the side surface of the frame body through the matching of the clamping block and the clamping groove, and the stability and reliability of the sensor installed on the fixed plate are ensured.

[0013] 2、The filter screens on both sides of the filter shell are used in combination with the cleaning brush through the rotating shaft, so that when the filter screen needs to be cleaned, the rotating head can be rotated, the driving bevel gear and the driven bevel gear are in meshing transmission, the impurities on the filter screen can be efficiently cleaned, blockage is prevented, the operation efficiency and accuracy of the gas detector are improved, and the safety of the use environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A schematic view of a toxic gas detector with replaceable sensors is provided for the utility model;

[0015] Figure 2 A sectional view of a frame body of a toxic gas detector with replaceable sensors is provided for the utility model;

[0016] Figure 3 A sectional view of a fixed plate of a toxic gas detector with replaceable sensors is provided for the utility model;

[0017] Figure 4The utility model provides a replaceable sensor's poisonous gas detector's connecting diagram of press strip and adjusting screw rod.

[0018] Figure 5 The utility model provides a replaceable sensor's poisonous gas detector's filter shell's schematic diagram.

[0019] Legend:

[0020] 1, detector; 2, connecting piece; 3, frame; 4, limit board; 5, fixed plate; 6, pull plate; 7, protruding block; 8, sliding slot; 9, clamping block; 10, spring; 11, frame; 12, clamping groove; 13, assembly mouth; 14, sensor; 15, slot; 16, positioning groove; 17, rotating ring; 18, adjusting screw rod; 19, press strip; 20, recess; 21, filter shell; 22, filter screen; 23, rotating shaft; 24, cleaning brush; 25, driven bevel gear; 26, driving bevel gear; 27, rotating rod; 28, rotary head; 29, screw groove; 30, threaded rod; 31, screw hole. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples.

[0022] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the utility model is not limited to the specific examples disclosed in the following disclosure.

[0023] Example one

[0024] Please refer to Figures 1-4The utility model provides a technical scheme: a poisonous gas detector of replaceable sensor, including detector 1, the lower fixed mounting of detector 1 has connecting piece 2, the bottom fixed mounting of connecting piece 2 has frame 3, the bottom fixed mounting of frame 3 has filter shell 21, the inside sliding connection of frame 3 has limit stop 4, the surface fixed mounting of limit stop 4 has fixed plate 5, the side fixed mounting of fixed plate 5 has pull plate 6, the surface fixed mounting of pull plate 6 has protruding block 7, the inside of protruding block 7 is equipped with sliding slot 8, the inside sliding connection of sliding slot 8 has clamping block 9, the fixed connection of clamping block 9 and sliding slot 8 has spring 10, the side fixed mounting of frame 3 has frame 11, the side of frame 11 is equipped with clamping groove 12, the position of clamping block 9 and clamping groove 12 correspond, clamping block 9 is clamped in the inside of clamping groove 12, the number of clamping block 9 is two groups, two groups of clamping block 9 are symmetrically distributed on the surface of pull plate 6, and clamping is carried out through clamping block 9 and clamping groove 12, so that pull plate 6 can be stably embedded with the frame 11 on the side of frame 3, so as to guarantee the stability and reliability of sensor 14 installed on fixed plate 5, the inside top of fixed plate 5 is fixedly installed with sensor 14, the bottom of fixed plate 5 is equipped with assembly opening 13, the position of assembly opening 13 and sensor 14 correspond, pull plate 6 is pulled out from the inside of frame 3, assembly opening 13 simplifies the installation and dismounting process of sensor 14, and the sensor 14 is convenient to replace and maintain, the inside rotationally connected of the opposite side of frame 3 and pull plate 6 has rotating ring 17, the inside screw thread connection of rotating ring 17 has adjusting screw rod 18, the end rotationally connected of adjusting screw rod 18 has pressing strip 19, the surface of limit stop 4 is equipped with recess 20, the surface of limit stop 4 is equipped with through slot 15 and positioning groove 16, the number of through slot 15 and positioning groove 16 is two groups, two groups of through slot 15 and positioning groove 16 are symmetrically distributed on the surface of limit stop 4, and through slot 15 and positioning groove 16 are vertically distributed, so that pressing strip 19 enters the inside of limit stop 4 through through slot 15, so as to conveniently adapt pressing strip 19 and positioning groove 16, in addition, through slot 15 and positioning groove 16 are vertically arranged, the stability and accuracy of structure are increased, the end shape of pressing strip 19 is consistent with the shape of through slot 15 and positioning groove 16, wherein, through slot 15 penetrates in the inside of limit stop 4, so that pressing strip 19 can stably structure with limit stop 4, the inside of adjusting screw rod 18 is equipped with screw groove 29, the inside screw thread connection of screw groove 29 has screw rod 30, the inside of pressing strip 19 is equipped with screw hole 31.

[0025] Example two

[0026] Please refer to Figure 4The both sides of the filter shell 21 are fixedly provided with filter screens 22, the inner part of the filter screen 22 is rotatably connected with a rotating shaft 23, the surface of the one end of the rotating shaft 23 extending out of the filter screen 22 is fixedly provided with a cleaning brush 24, the rotating shaft 23 can drive the cleaning brush 24 to rotate on the filter screen 22, so that the personnel can clean the filter screen 22, avoid the filter screen 22 from being blocked to affect the use of the detector, the bottom of the filter shell 21 is rotatably connected with a rotating rod 27, the bottom end of the rotating rod 27 is fixedly provided with a rotating head 28, the top end of the rotating rod 27 is fixedly provided with a driving bevel gear 26, the surface of the rotating shaft 23 is fixedly provided with a driven bevel gear 25, the driving bevel gear 26 and the driven bevel gear 25 are in mesh transmission, the driving bevel gear 26 and the driven bevel gear 25 cooperate to make the cleaning brush 24 clean the filter screen 22 efficiently, ensure that the cleaning brush 24 can uniformly and continuously clean the filter screen 22, thereby preventing impurities from accumulating, maintaining the filtering performance, and ensuring the stability and accuracy of the detector.

[0027] Working principle: when the sensor 14 inside the gas detector needs to be replaced, first, the limiting plate 4 and the frame 3 are unlocked, at this time, the threaded rod 30 is rotated, the threaded rod 30 is screwed out of the threaded hole 31, the threaded rod 30 is retracted into the threaded groove 29 of the adjusting screw 18, then the adjusting screw 18 is rotated, the adjusting screw 18 extends into the frame 3, and the pressing strip 19 can be pushed out of the positioning groove 16, when the pressing strip 19 is completely removed, the threaded rod 30 is screwed back into the threaded hole 31, the pressing strip 19 and the adjusting screw 18 become an integral whole, avoiding the pressing strip 19 from rotating randomly at the end of the adjusting screw 18, at this time, the adjusting screw 18 is rotated under the action of the rotating ring 17, the pressing strip 19 is rotated to the position of the slot 15, then the threaded rod 30 is screwed out of the threaded hole 31, then the adjusting screw 18 is reversely rotated, at this time, the adjusting screw 18 extends out of the frame 3, so that the pressing strip 19 can be tightly pressed on the inner surface of the frame 3, thereby the position of the pressing strip 19 is stabilized, then the pull plate 6 is pulled out of the frame 11, in this process, the clamping block 9 is pressed into the sliding groove 8, and the spring 10 is pressed, so that the personnel can quickly pull out the pull plate 6, thereby the fixed plate 5 is pulled out of the frame 3, through the assembly opening 13, the personnel can conveniently replace the sensor 14, after replacing the sensor 14, the above operation steps are reversely operated to reset the fixed plate 5 and the pull plate 6.

[0028] The filter shell 21 can filter the gas to be detected, and the filter screen 22 on the filter shell 21 needs to be cleaned after long-time use. At this time, the rotating head 28 is rotated, the rotating head 28 drives the rotating rod 27 to rotate, the rotating rod 27 drives the driving bevel gear 26 to rotate, the driving bevel gear 26 drives the driven bevel gear 25 to rotate, so that the driven bevel gear 25 drives the rotating shaft 23 to rotate, and then the cleaning brush 24 installed on the surface of the rotating shaft 23 can clean the surface of the filter screen 22.

[0029] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any person skilled in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A toxic gas detector with a replaceable sensor, comprising a detector (1), characterized in that: A connector (2) is fixedly installed at the lower end of the detector (1). A frame (3) is fixedly installed at the bottom of the connector (2). A filter shell (21) is fixedly installed at the bottom of the frame (3). A limit plate (4) is slidably connected inside the frame (3). A fixing plate (5) is fixedly installed on the surface of the limit plate (4). A pull plate (6) is fixedly installed on the side of the fixing plate (5). A protrusion (7) is fixedly installed on the surface of the pull plate (6). A sliding groove (8) is opened inside the protrusion (7). A locking block (9) is slidably connected inside the sliding groove (8). A spring (10) is fixedly connected between the locking block (9) and the sliding groove (8). A frame (11) is fixedly installed on the side of the frame (3). The frame (11) has a slot (12) on its side. A sensor (14) is fixedly installed on the inner top surface of the fixing plate (5). A rotating ring (17) is rotatably connected to the side of the frame (3) opposite to the pull plate (6). An adjusting screw (18) is threadedly connected to the inside of the rotating ring (17). A pressure strip (19) is rotatably connected to the end of the adjusting screw (18). A groove (20) is opened on the surface of the limiting plate (4). A through groove (15) and a positioning groove (16) are opened on the surface of the limiting plate (4). A threaded groove (29) is opened inside the adjusting screw (18). A threaded rod (30) is threadedly connected inside the threaded groove (29). A screw hole (31) is opened inside the pressure strip (19).

2. The toxic gas detector with a replaceable sensor according to claim 1, characterized in that: The position of the card block (9) corresponds to that of the card slot (12). The card block (9) is engaged and connected inside the card slot (12). There are two sets of card blocks (9), and the two sets of card blocks (9) are symmetrically distributed on the surface of the pull plate (6).

3. The toxic gas detector with a replaceable sensor according to claim 1, characterized in that: The bottom of the fixing plate (5) is provided with an assembly port (13), which corresponds to the position of the sensor (14).

4. The toxic gas detector with a replaceable sensor according to claim 1, characterized in that: The number of the through groove (15) and the positioning groove (16) are two sets. The two sets of through groove (15) and positioning groove (16) are symmetrically distributed on the surface of the limiting plate (4), and the through groove (15) and the positioning groove (16) are distributed in a perpendicular state.

5. The toxic gas detector with a replaceable sensor according to claim 1, characterized in that: The end shape of the pressure strip (19) matches the shape of the through groove (15) and the positioning groove (16), wherein the through groove (15) penetrates inside the limiting plate (4).

6. The toxic gas detector with a replaceable sensor according to claim 1, characterized in that: A filter screen (22) is fixedly installed on both sides of the filter housing (21). A rotating shaft (23) is rotatably connected inside the filter screen (22). A cleaning brush (24) is fixedly installed on one end of the rotating shaft (23) extending out of the filter screen (22).

7. The toxic gas detector with a replaceable sensor according to claim 6, characterized in that: The bottom of the filter housing (21) is rotatably connected to a rotating rod (27), a rotating head (28) is fixedly installed at the bottom end of the rotating rod (27), a driving bevel gear (26) is fixedly installed at the top end of the rotating rod (27), and a driven bevel gear (25) is fixedly installed on the surface of the rotating shaft (23). The driving bevel gear (26) and the driven bevel gear (25) are meshed and driven.

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