Gas detection device

Abstract

The present application relates to a gas detection device, including a shell and a gas concentration sensor. An air inlet is provided at the bottom of the shell, a filter is provided in the air inlet, the filter is slidably connected to the air inlet in the vertical direction, sliding grooves are provided on both sides of the air inlet in the width direction of the shell, clamping plates are connected in the sliding grooves, the clamping plates are slidably connected to the air inlet and the sliding grooves in the width direction of the shell, the filter contacts the two clamping plates on both sides in the width direction of the shell, and a moving component is connected to the shell. The moving component drives the clamping plate to slide in the sliding groove in the width direction of the shell, so that the clamping plate is away from the filter, which is convenient for disassembly of the filter, and further convenient for replacement and cleaning of the filter.

Description

Technical Field

[0001] The present application relates to the field of gas detection equipment, and in particular to a gas detection device. Background Art

[0002] If the gas leakage in the room cannot be discovered and measures are not taken immediately, it will pose a great threat to people's health, safety and normal life. Most families usually install gas detection devices to detect the gas concentration in the room.

[0003] A Chinese patent with the authorization announcement number CN211856511U discloses a gas leak detection device, including a detection device mounting base, a moisture-proof pad movably connected to the top of the detection device mounting base, a detection device housing fixedly connected to both sides of the top of the moisture-proof pad, a gas leak detection device fixedly connected to the inner side of the detection device housing, an air inlet fixedly connected to the middle of the right side of the gas leak detection device, a dust net connected to the inside of the air inlet, and a diffuser hole fixedly connected to the top of the external power port. A gas leak detection device is provided with a detection device mounting base, which is convenient for users to fix and install the device, and can be easily disassembled. A moisture-proof pad is provided to protect the components inside the gas leak detection device, which plays a certain moisture-proof role. The moisture-proof pad is movably installed inside the detection device housing, which is convenient for the staff to replace the moisture-proof pad after a period of time, greatly improving the practicality of the gas leak detection device.

[0004] With regard to the above-mentioned related technologies, after long-term use, the dust net is easily contaminated with oil and other impurities, and there is a possibility of clogging the dust net. The dust net is fixedly connected to the air inlet, which makes it inconvenient to clean the dust net. Utility Model Content

[0005] In order to facilitate the cleaning and replacement of the filter, the present application provides a gas detection device.

[0006] The gas detection device provided in this application adopts the following technical solution:

[0007] A gas detection device comprises a shell and a gas concentration sensor. An air inlet is provided at the bottom of the shell, a filter is provided in the air inlet, the length direction of the shell is consistent with the vertical direction, the filter is slidably connected to the air inlet along the vertical direction, sliding grooves are provided on the inner walls on both sides of the air inlet along the width direction of the shell, the depth direction of the sliding grooves is consistent with the width direction of the shell, clamping plates are connected to the sliding grooves, the length direction of the clamping plates is consistent with the thickness direction of the shell, the clamping plates are in contact with the inner walls on the corresponding sides of the air inlet along the length direction, the clamping plates are slidably connected to the air inlet and the sliding grooves along the width direction of the shell, the filter is in contact with two clamping plates on both sides along the width direction of the shell, and the shell is connected to a moving component, and the moving component is used to drive the clamping plate to move along the width direction of the shell.

[0008] By adopting the above technical solution, when in use, the two clamping plates clamp the filter screen. When the filter screen is contaminated with oil and impurities, the moving component drives the clamping plate to slide along the width direction of the shell and connect to the sliding groove, so that the clamping plate is away from the filter screen, thereby facilitating the disassembly of the filter screen, and then facilitating the replacement and cleaning of the filter screen.

[0009] Optionally, two moving components are provided, one of the moving components is used to drive a clamping plate to move, a moving hole is opened on the inner wall of one side of the sliding groove along its depth direction, and the length direction of the moving hole is consistent with the width direction of the shell, the moving component includes a moving rod and a locking piece, the length direction of the moving rod is consistent with the width direction of the shell, the moving rod passes through the moving hole along its length direction, the moving rod is slidably connected to the moving hole and the sliding groove along its length direction, and one end of the moving rod is connected to the clamping plate, and the locking piece is used to lock the moving rod in the moving hole.

[0010] By adopting the above technical solution, when removing the filter, the moving rod is moved along the width direction of the shell, so that the moving rod is slidably connected to the moving hole along its length direction, thereby driving the clamping plate away from the filter. When clamping the filter, the moving rod is moved along the length direction of the moving rod, so that the clamping plate approaches and clamps the filter.

[0011] Optionally, a mounting groove is provided on the inner wall of the movable hole, and the length direction of the mounting groove is consistent with the radial direction of the movable rod. The locking member includes a first spring and a locking block. The length direction of the first spring is consistent with the length direction of the mounting groove. One end of the first spring is connected to the inner wall of the mounting groove, and the other end of the first spring is connected to the locking block. The locking block is connected to the mounting groove by sliding radially along the movable rod. A groove is provided on the peripheral side of the movable rod, and the locking block is embedded in the groove. When the locking block is embedded in the groove, the clamping plate clamps the filter.

[0012] By adopting the above technical solution, when clamping the filter net, the moving rod is moved along the width direction of the shell, and when the clamping plate is close to the filter net, the moving rod is slidably connected in the moving hole along its length direction, so that the locking block is close to the groove. When the locking block is close to the groove, the first spring drives the locking block to move along the length direction of the installation groove and drives the locking block to embed into the groove, so that the moving rod is stably connected to the moving hole.

[0013] Optionally, the moving rod is rotatably connected to the moving hole, and the locking block is provided with a guide surface along one side of the circumference of the moving rod, and the guide surface facilitates the locking block to move away from the groove.

[0014] By adopting the above technical solution, when removing the filter screen, the moving rod is rotated, and under the guidance of the guide surface, the locking block is away from the groove and embedded in the installation groove, so that the moving rod can be moved along its length direction and the filter screen can be removed easily.

[0015] Optionally, a connecting ring is connected to the inner wall of the air inlet, the bottom of the connecting ring contacts the top of the filter, the clamping plate is located below the connecting ring, the bottom of the connecting ring is connected to a sealing ring, the sealing ring contacts the top of the filter, and the sealing ring is used to seal the gap between the filter and the connecting ring.

[0016] By adopting the above technical solution, a connecting ring and a sealing ring are added to improve the sealing of the connection between the air inlet and the filter, thereby reducing the gas from entering the shell through the gap between the air inlet and the filter, and reducing the oil from entering the shell.

[0017] Optionally, a guide tube is connected inside the shell, one end of the guide tube is connected to the air inlet, and the other end of the guide tube is directed toward the gas concentration sensor. The guide tube is connected to a flow sensor, and the flow sensor is used to detect the air flow through the filter and output the flow value. The flow sensor is electrically connected to a controller, and the controller is electrically connected to an alarm module. The controller is used to receive the flow value and compare it with a preset value. When the flow value is less than the preset value, the controller controls the alarm module to sound an alarm.

[0018] By adopting the above technical solution, when the air flow rate passing through the filter is less than the preset value, the controller controls the alarm to sound an alarm, thereby reminding the operator to replace or clean the filter in time, and try to avoid the situation where the filter is blocked due to untimely cleaning and affects the use of the detection device.

[0019] Optionally, the moving assembly also includes a second spring, and a handle is connected to one end of the moving rod away from the filter screen. The second spring is connected to a side wall of the shell along the width direction of the shell. The length direction of the second spring is consistent with the width direction of the shell. One end of the second spring is connected to the shell, and the other end of the second spring is in contact with the handle. When the clamping plate clamps the filter screen, the second spring is squeezed and deformed.

[0020] By adopting the above technical solution, a handle is added to facilitate the movement of the moving rod. When the filter is installed at the air inlet, the second spring is squeezed and deformed. When the filter is removed, the moving rod is rotated to make the locking block move away from the groove. The operator releases the handle, and the second spring restores its shape and pushes the handle and the moving rod to move along the length direction of the shell, so that the clamping plate is away from the filter, which further facilitates the removal of the filter.

[0021] Optionally, the clamping plate is connected with a flexible layer, and the flexible layer is in contact with the filter screen.

[0022] By adopting the above technical solution and adding a flexible layer, the connection between the clamping plate and the filter screen is made more stable.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When in use, two clamping plates clamp the filter screen. When the filter screen is contaminated with oil and impurities, the moving assembly drives the clamping plates to slide along the width direction of the shell and connect to the sliding groove, so that the clamping plates are away from the filter screen, which is convenient for the removal of the filter screen, and then the replacement and cleaning of the filter screen;

[0025] 2. When clamping the filter, the moving rod is moved along the width direction of the shell, and when the clamping plate is close to the filter, the moving rod is slidably connected to the moving hole along its length direction, so that the locking block is close to the groove. When the locking block is close to the groove, the first spring drives the locking block to move along the length direction of the installation groove and drives the locking block to be embedded in the groove, so that the moving rod is stably connected to the moving hole;

[0026] 3. A handle is added to facilitate the movement of the moving rod. When the filter is installed at the air inlet, the second spring is squeezed and deformed. When the filter is removed, the moving rod is rotated to move the locking block away from the groove. The operator releases the handle, and the second spring restores its shape and pushes the handle and the moving rod to move along the length direction of the shell, so that the clamping plate is away from the filter, which further facilitates the removal of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 It is a top view of this embodiment.

[0029] Figure 3 This embodiment Figure 2 Sectional view along AA direction.

[0030] Figure 4 This embodiment Figure 3 Magnified view of part C.

[0031] Figure 5 This embodiment Figure 2 Cross-sectional view along the BB axis.

[0032] Explanation of the reference numerals: 100, housing; 110, air inlet; 111, sliding groove; 112, connecting ring; 113, sealing ring; 114, movable hole; 115, mounting groove; 120, air outlet; 130, clamping plate; 131, clamping port; 132, flexible layer; 140, guide tube; 200, gas concentration sensor; 300, filter; 400, moving assembly; 410, moving rod; 411, handle; 412, groove; 420, locking piece; 421, first spring; 422, locking block; 430, second spring; 500, flow sensor. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The present application embodiment discloses a gas detection device. Figure 1 and Figure 2 The gas detection device includes a shell 100. The shell 100 is vertically arranged, and the length direction of the shell 100 is consistent with the vertical direction.

[0035] Reference Figure 1 and Figure 3 , a gas concentration sensor 200 is connected to the shell 100, an air inlet 110 is provided at the bottom of the shell 100, and an air outlet 120 is provided at the top of the shell 100. The gas concentration sensor 200 is provided in the shell 100, and the gas concentration sensor 200 is used to detect the gas concentration in the air and output the concentration value. The length direction of the air inlet 110 is consistent with the width direction of the shell 100, and a filter 300 is detachably connected to the air inlet 110, and the length direction of the filter 300 is consistent with the width direction of the shell 100, and the filter 300 is slidably connected to the air inlet 110 along the vertical direction. The inner walls of both sides of the air inlet 110 along the length direction are connected with clamping plates 130, and the length direction of the clamping plates 130 is consistent with the thickness direction of the shell 100. Sliding grooves 111 are provided on both sides of the air inlet 110 along the width direction of the shell 100, and the depth direction of the sliding groove 111 is consistent with the width direction of the shell 100, and the length direction of the sliding groove 111 is consistent with the thickness direction of the shell 100. The clamping plate 130 is slidably connected to the sliding groove 111 and the air inlet 110 along the width direction of the housing 100. The filter screen 300 is in contact with two clamping plates 130 on both sides along the width direction of the housing 100. The housing 100 is connected to two moving components 400, one moving component 400 corresponds to one clamping plate 130, and the moving component 400 is used to drive the clamping plate 130 to move along the width direction of the housing 100.

[0036] The moving assembly 400 drives the two clamping plates 130 to move along the width direction of the shell 100 and move the two clamping plates 130 away from each other, thereby making the clamping plates 130 away from the filter 300, so as to facilitate the removal of the filter 300 from the air inlet 110 and facilitate the cleaning and replacement of the filter 300.

[0037] Reference Figure 3 The gas concentration sensor 200 is electrically connected to a controller, which is disposed in the housing 100. The controller is electrically connected to an alarm module, which is used to receive a concentration value and compare it with a preset value. When the concentration value is higher than the preset value, the controller controls the alarm module to sound an alarm. The gas concentration sensor 200 uses an MQ-G4 gas sensor, and the controller uses an S7-200 PLC.

[0038] Reference Figure 3 and Figure 4 The inner wall of the air inlet 110 is connected with a connecting ring 112, which is a square ring, and the circumference of the connecting ring 112 is connected to the inner wall of the air inlet 110. The connecting ring 112 is arranged directly above the filter 300. The bottom of the connecting ring 112 is connected with a sealing ring 113, and the sealing ring 113 is a square ring, and the bottom of the sealing ring 113 contacts the top of the filter 300, and the sealing ring 113 is made of rubber. The clamping plates 130 are in contact with the inner walls of the corresponding sides of the air inlet 110 along both sides of the length direction. The two clamping plates 130 are provided with a clamping opening 131 on one side close to each other, and the clamping opening 131 is opened close to the side of the connecting ring 112. The inner walls of the clamping openings 131 are connected with flexible layers 132, and the flexible layers 132 are made of rubber.

[0039] The connecting ring 112 and the sealing ring 113 are added to reduce the gap between the connecting ring 112 and the clamping plate 130 , and the flexible layer 132 is added to make the connection between the filter screen 300 and the clamping plate 130 more stable.

[0040] Reference Figure 3 A guide tube 140 is connected to the housing 100. One end of the guide tube 140 is connected to the air inlet 110, and the other end of the guide tube 140 faces the gas concentration sensor 200. The guide tube 140 is used to guide the air to the gas concentration sensor 200. The guide tube 140 is connected to a flow sensor 500. The flow sensor 500 is electrically connected to the controller. The flow sensor 500 is used to detect the air flow through the guide tube 140 and output the flow value. The flow sensor 500 uses a DN15-50 vortex flowmeter. The controller is used to receive the flow value and compare it with the preset value. When the flow value is less than the preset value, the controller controls the alarm module to sound an alarm. The alarm module uses two buzzers, and the two buzzers are used to emit two different sounds.

[0041] Reference Figure 3and Figure 4 , two moving assemblies 400 are respectively arranged on both sides of the air inlet 110 along the width direction of the shell 100. The moving assembly 400 includes a moving rod 410, a locking piece 420, and a second spring 430. The length direction of the locking rod is consistent with the width direction of the shell 100, and a moving hole 114 is opened on the inner wall of the sliding groove 111 along one side of its depth direction. The length direction of the moving hole 114 is consistent with the width direction of the shell 100. The moving rod 410 passes through and is slidably connected in the moving hole 114 along its length direction. One end of the moving rod 410 is arranged in the sliding groove 111, and the moving rod 410 is slidably connected in the sliding groove 111 along its length direction. The moving rod 410 is rotatably connected in the moving hole 114. One end of the moving rod 410 along its length direction is connected to the side of the clamping plate 130 away from the filter 300, and the other end of the moving rod 410 is connected to a handle 411.

[0042] Reference Figure 3 and Figure 5 The inner wall of the moving hole 114 is provided with a mounting groove 115, and the length direction of the mounting groove 115 is consistent with the radial direction of the moving rod 410. The locking member 420 includes a first spring 421 and a locking block 422. The length direction of the first spring 421 is consistent with the length direction of the mounting groove 115. One end of the first spring 421 is connected to the inner wall of the mounting groove 115 along its length direction, and the other end of the first spring 421 is connected to one end of the locking block 422. The locking block 422 is connected to the mounting groove 115 by sliding along the radial direction of the moving rod 410. A groove 412 is provided on the peripheral side of the moving rod 410. The depth direction of the groove 412 is consistent with the radial direction of the moving rod 410, and the locking block 422 is embedded in the groove 412 away from one end of the first spring 421. When the locking block 422 is embedded in the groove 412, the clamping plate 130 clamps the filter screen 300. The locking block 422 is provided with a guide surface along one side of the moving rod 410 circumferentially. The guide surface is provided at the end of the locking block 422 away from the first spring 421 . The guide surface is inclined to facilitate the locking block 422 to be away from the groove 412 .

[0043] Reference Figure 3 The length direction of the second spring 430 is consistent with the width direction of the shell 100. One end of the second spring 430 along its length direction is connected to the outer wall of the shell 100 along one side of the width direction of the shell 100. The other end of the second spring 430 contacts the side of the handle 411 close to the moving rod 410. When the clamping plate 130 clamps the filter screen 300, the second spring 430 is squeezed and deformed.

[0044] When removing the filter 300, rotate the handle 411 to drive the moving rod 410 to rotate, so that the locking block 422 is away from the groove 412 and embedded in the installation groove 115, and the second spring 430 drives the handle 411 and the moving rod 410 to move along the width direction of the shell 100, thereby driving the clamping plate 130 away from the filter 300, thereby facilitating the removal of the filter 300.

[0045] The implementation principle of a gas detection device in an embodiment of the present application is as follows: when in use, the locking block 422 is embedded in the groove 412, and the second spring 430 is squeezed and deformed. After long-term use, the surface of the filter 300 is contaminated with a large amount of oil and impurities, and the filter 300 needs to be removed from the air inlet 110 and cleaned. When removing the filter 300, the handle 411 is turned, and under the guiding effect of the guide surface, the locking block 422 is away from the groove 412 and embedded in the installation groove 115, so that the locking block 422 squeezes the first spring 421 and causes the first spring 421 to deform. The operator releases the handle 411, the second spring 430 restores its shape and pushes the handle 411 and the moving rod 410 to move along the length direction of the shell 100, and the moving rod 410 drives the clamping plate 130 away from the filter 300, so as to facilitate the removal of the filter 300 from the air inlet 110, so as to facilitate the cleaning and replacement of the filter 300.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas detection device, comprising a housing (100) and a gas concentration sensor (200), wherein the housing (100) is provided with an air inlet (110) at the bottom, a filter (300) is provided in the air inlet (110), and the length direction of the housing (100) is consistent with the vertical direction, and is characterized in that: The filter screen (300) is slidably connected in the air inlet (110) along the vertical direction. The air inlet (110) is provided with sliding grooves (111) on both inner walls along the width direction of the shell (100). The depth direction of the sliding groove (111) is consistent with the width direction of the shell (100). A clamping plate (130) is connected in the sliding groove (111). The length direction of the clamping plate (130) is consistent with the thickness direction of the shell (100). The clamping plate (130) is provided with a plurality of clamping plates (130) along its length. The two ends are in contact with the inner walls of the corresponding sides of the air inlet (110); the clamping plate (130) is slidably connected to the air inlet (110) and the sliding groove (111) along the width direction of the shell (100); the filter screen (300) is in contact with the two clamping plates (130) on both sides along the width direction of the shell (100); the shell (100) is connected to a moving component (400); the moving component (400) is used to drive the clamping plate (130) to move along the width direction of the shell (100).

2. The gas detection device according to claim 1, characterized in that: The movable components (400) are provided with two, one of which is used to drive a clamping plate (130) to move, and a movable hole (114) is opened on the inner wall of one side of the sliding groove (111) along the depth direction thereof, and the length direction of the movable hole (114) is consistent with the width direction of the shell (100). The movable component (400) comprises a movable rod (410) and a locking member (420), and the length direction of the movable rod (410) is consistent with the width direction of the shell (100), and the movable rod (410) passes through the movable hole (114) along its length direction, and the movable rod (410) is slidably connected to the movable hole (114) and the sliding groove (111) along its length direction, and one end of the movable rod (410) is connected to the clamping plate (130), and the locking member (420) is used to lock the movable rod (410) in the movable hole (114).

3. The gas detection device according to claim 2, characterized in that: The inner wall of the movable hole (114) is provided with a mounting groove (115), and the length direction of the mounting groove (115) is consistent with the radial direction of the movable rod (410). The locking member (420) comprises a first spring (421) and a locking block (422), and the length direction of the first spring (421) is consistent with the length direction of the mounting groove (115). One end of the first spring (421) is connected to the inner wall of the mounting groove (115), and the other end of the first spring (421) is connected to the locking block (422). The locking block (422) is connected to the mounting groove (115) by sliding along the radial direction of the movable rod (410). A groove (412) is provided on the circumferential side of the movable rod (410), and the locking block (422) is embedded in the groove (412). When the locking block (422) is embedded in the groove (412), the clamping plate (130) clamps the filter screen (300).

4. The gas detection device according to claim 3, characterized in that: The moving rod (410) is rotatably connected to the moving hole (114), and the locking block (422) is provided with a guide surface along one side of the circumference of the moving rod (410), wherein the guide surface facilitates the locking block (422) to move away from the groove (412).

5. The gas detection device according to claim 1, characterized in that: The inner wall of the air inlet (110) is connected to a connecting ring (112), the bottom of the connecting ring (112) is in contact with the top of the filter screen (300), the clamping plate (130) is located below the connecting ring (112), the bottom of the connecting ring (112) is connected to a sealing ring (113), the sealing ring (113) is in contact with the top of the filter screen (300), and the sealing ring (113) is used to seal the gap between the filter screen (300) and the connecting ring (112).

6. The gas detection device according to claim 1, characterized in that: A guide tube (140) is connected to the shell (100), one end of the guide tube (140) is in communication with the air inlet (110), and the other end of the guide tube (140) faces the gas concentration sensor (200). The guide tube (140) is connected to a flow sensor (500), and the flow sensor (500) is used to detect the flow of air passing through the guide tube (140) and output a flow value. The flow sensor (500) is electrically connected to a controller, and the controller is electrically connected to an alarm module. The controller is used to receive the flow value and compare it with a preset value. When the flow value is less than the preset value, the controller controls the alarm module to issue an alarm.

7. The gas detection device according to claim 3, characterized in that: The moving assembly (400) further comprises a second spring (430); one end of the moving rod (410) away from the filter screen (300) is connected to a handle (411); the second spring (430) is connected to a side wall of the shell (100) along a width direction of the shell (100); the length direction of the second spring (430) is consistent with the width direction of the shell (100); one end of the second spring (430) is connected to the shell (100); the other end of the second spring (430) is in contact with the handle (411); when the clamping plate (130) clamps the filter screen (300), the second spring (430) is squeezed and deformed.

8. The gas detection device according to claim 1, characterized in that: The clamping plate (130) is connected to a flexible layer (132), and the flexible layer (132) is in contact with the filter screen (300).

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