A combustible gas detector capable of detecting off-line

Abstract

The present invention relates to the field of combustible gas detector structures, and in particular to a combustible gas detector that can detect when it is offline, comprising a shell, an inner wall at one end of the shell is fixedly connected to a sensor body, an inner wall at one end of the shell is fixedly connected to a controller that is connected to the sensor body through an electric wire, an air inlet is provided at the bottom of the shell, a filtering mechanism is provided in the air inlet, a collecting mechanism is provided outside one end of the shell, and a cleaning mechanism is provided in the shell; the filtering mechanism comprises a filter screen plate that forms a sliding fit with the inner wall of the air inlet, and the gas passing through the air inlet can be detected by the filtering mechanism, and the gas can be blown onto a rotating processing plate after being filtered by the filter screen plate, at which time the residue after being filtered by the filter screen plate can be retained in an adsorption tank, and after a large amount of residue remains in the adsorption tank, it can flow into a collection box for collection.

Description

Technical Field

[0001] The invention relates to the field of combustible gas detector structures, and in particular to a combustible gas detector capable of detecting when it is offline. Background Art

[0002] A combustible gas detector is a detector that responds to the concentration of a single or multiple combustible gases. There are two types of combustible gas detectors: catalytic and infrared optical. Catalytic combustible gas detectors use the change in resistance of a refractory metal platinum wire after heating to measure the concentration of combustible gas. When combustible gas enters the detector, an oxidation reaction occurs on the surface of the platinum wire. The heat generated causes the temperature of the platinum wire to rise, and the resistivity of the platinum wire changes. The infrared optical type uses an infrared sensor to detect alkane combustible gases in the on-site environment through the absorption principle of an infrared light source.

[0003] At present, a Chinese patent with announcement number CN108828157A discloses a combustible gas detector with detectable offline, including a bottom shell, a display screen, an upper cover, a protective cover, an explosion-proof hole, an explosion-proof plug, a sensor assembly, an introduction hole, an offline detector, an introduction plug and a mounting hole. An explosion-proof hole is opened on one side of the bottom shell, and an explosion-proof plug is installed in the explosion-proof hole. An introduction hole is opened on the side wall of the bottom shell on the symmetrical surface of the explosion-proof hole, and an introduction plug is installed in the introduction hole. A mounting hole is opened on the side of the bottom shell on the vertical side of the introduction hole, and the end of the sensor assembly is in the mounting hole. A offline detector is installed at the introduction hole inside the bottom shell.

[0004] However, the above-mentioned device is generally installed in the kitchen during use, and the environment in the kitchen is heavy with oil smoke. During operation, as the gas flows through the air inlet to the vicinity of the sensor assembly, the oil stains formed by the condensation of the oil smoke can easily adhere to the surface of the sensor assembly. However, it is difficult for the device to stably filter the oil stains in the oil smoke, and it is even more difficult to clean the filtered oil stains conveniently and stably. When used for a long time, the detection sensitivity of the combustible gas detector will be reduced, or even malfunction will occur, affecting the normal working state and service life of the combustible gas detector. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a combustible gas detector which can detect when it is offline.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a combustible gas detector with detectable disconnection, comprising a shell, a sensor body is fixedly connected to the inner wall of one end of the shell, a controller connected to the sensor body through a wire is fixedly connected to the inner wall of one end of the shell, an air inlet is opened at the bottom of the shell, a filtering mechanism is arranged in the air inlet, a collection mechanism is arranged outside one end of the shell, and a cleaning mechanism is arranged in the shell;

[0007] The filtering mechanism includes a filter screen plate that forms a sliding fit with the inner wall of the air inlet, one end of the fixed frame of the filter screen plate is provided with a rotating groove surrounding the filter screen plate, the inner wall of the rotating groove is slidably connected with a plurality of evenly distributed rotating blocks, one end of the rotating block is fixedly connected with a rotating rod, one end of the rotating rod is fixedly connected with a processing plate, one end of the processing plate is provided with a plurality of evenly distributed air vents, and one end of the processing plate is provided with a plurality of evenly distributed adsorption grooves.

[0008] Preferably, one end of the processing plate is fixedly connected to a rotating shaft, the rotating shaft and the filter screen are rotatably connected via a bearing, a plurality of evenly distributed impellers are fixedly connected to the surface of the rotating shaft, a scraper is fixedly connected to the top of the rotating shaft, and the scraper is in contact with the filter screen.

[0009] Preferably, the inner walls at both ends of the air inlet are provided with connecting grooves with a T-shaped structure, the inner walls of the connecting grooves are slidably connected with connecting blocks with a T-shaped structure, the connecting block is fixedly connected to the filter screen, the top of the connecting block is fixedly connected with a connecting spring, the connecting spring is in contact with the top inner wall of the connecting groove, the inner wall of the air inlet is threadedly connected with an air inlet pipe, and the air inlet pipe is in contact with the fixed frame of the filter screen.

[0010] Preferably, the cleaning mechanism includes a movable active rod, an inner wall at one end of the shell is provided with a movable groove which forms a sliding fit with the movable rod, a movable bar is provided on one side of the movable rod, a brush bar is fixedly connected to one end of the movable bar, and the brush bar is in contact with the sensor body.

[0011] Preferably, a reset groove is provided on one side of the movable rod, a movable spring is fixedly connected to the inner wall of one end of the reset groove, a movable block is fixedly connected to one end of the movable spring, and a sliding fit is formed between the movable block and the inner wall of the reset groove.

[0012] Preferably, a gear groove is provided at one end of the shell, and the inner wall of one end of the gear groove is rotatably connected to a gear shaft through a bearing, and a half gear is fixedly connected to the surface of the gear shaft. A limiting opening extending into the movable groove is provided on the inner wall of one end of the shell, and a rack is slidably connected to the inner wall of the limiting opening, and a limiting spring is fixedly connected between the inner wall of one side of the limiting opening and one side of the rack, the rack is fixedly connected to the movable rod, and the rack is meshed with the half gear.

[0013] Preferably, a transmission groove is opened on the inner wall of one side of one end of the shell, and the inner wall of one end of the transmission groove is rotatably connected to a transmission shaft through a bearing, and transmission plates are fixedly connected on both sides of the transmission shaft, and the transmission shaft is fixedly connected to the gear shaft.

[0014] Preferably, the collecting mechanism comprises a collecting box, an outer wall at one end of the shell is provided with a collecting port extending into the movable groove, a sliding fit is formed between the inner wall of the collecting port and the collecting box, and the collecting box is fixedly connected to the shell by a connecting piece and bolts.

[0015] Preferably, a moving opening is opened on the top outer wall of the shell, and a moving rod with a T-shaped structure is slidably connected to the inner wall of the moving opening. A moving spring is fixedly connected between the top inner wall of the moving rod and the top outer wall of the shell. The moving spring is sleeved on the surface of the moving rod, and the bottom of the moving rod is fixedly connected to a pressure plate that forms a sliding fit with the inner wall of the shell.

[0016] Preferably, a disconnection detector body is fixedly connected to an inner wall at one end of the shell, a display screen is fixedly connected to an outer wall at one end of the shell, and the controller is respectively connected to the disconnection detector body and the display screen through wires.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can detect the gas passing through the air inlet through the filtering mechanism. The gas can be blown onto the rotating processing plate after being filtered by the filter plate. At this time, the residue after being filtered by the filter plate can be retained in the adsorption tank. After a large amount of residue is retained in the adsorption tank, it can flow into the collection box for collection.

[0019] 2. The half gear can exert force on the rack during rotation, and the rack can slide in the inner wall of the limit opening under the force. The limit spring and the general tooth groove of the half gear can make the rack reciprocate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a combustible gas detector capable of detecting an offline gas drop according to the present invention;

[0021] Figure 2 This is a structural schematic diagram of a processing board of a combustible gas detector capable of detecting an offline gas drop according to the present invention;

[0022] Figure 3 This is a structural schematic diagram of a combustible gas detector with off-line detection according to the present invention, highlighting the filter screen plate;

[0023] Figure 4 This is a structural schematic diagram of a combustible gas detector that can detect when it is offline and highlights the air intake pipe of the present invention;

[0024] Figure 5 This is a structural schematic diagram of a combustible gas detector with detectable disconnection according to the present invention, which highlights the rotating block;

[0025] Figure 6 This is a structural schematic diagram of a combustible gas detector with off-line detection according to the present invention, highlighting the gear shaft;

[0026] Figure 7 It is a structural schematic diagram of a combustible gas detector with off-line detection according to the present invention with a rack highlighted;

[0027] Figure 8 This is a structural schematic diagram of a combustible gas detector with detectable disconnection according to the present invention, highlighting the movable spring;

[0028] Fig. 9 A schematic structural diagram of a combustible gas detector with detectable disconnection according to the present invention, highlighting a movable rod;

[0029] In the figure: 1, shell; 2, sensor body; 3, filter screen; 4, rotating groove; 5, rotating block; 6, rotating rod; 7, processing plate; 8, vent; 9, adsorption groove; 10, rotating shaft; 11, impeller; 12, scraper; 13, connecting groove; 14, connecting block; 15, air inlet pipe; 16, connecting spring; 17, movable rod; 18, movable groove; 19, movable bar; 20, brush bar; 21, reset groove; 22, movable spring; 23, movable block; 24, gear groove; 25, gear shaft; 26, half gear; 27, limit port; 28, rack; 29, limit spring; 30, transmission groove; 31, transmission shaft; 32, transmission plate; 33, collection box; 34, collection port; 35, moving port; 36, moving rod; 37, pressure plate; 38, moving spring; 39, offline detector body; 40, display screen. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] like Figure 1-Figure 9 A combustible gas detector with off-line detection shown in the figure comprises a shell 1, a sensor body 2 is fixedly connected to the inner wall of one end of the shell 1, a controller connected to the sensor body 2 through a wire is fixedly connected to the inner wall of one end of the shell 1, an air inlet is opened at the bottom of the shell 1, a filtering mechanism is arranged in the air inlet, a collecting mechanism is arranged outside one end of the shell 1, a cleaning mechanism is arranged in the shell 1, and the gas passing through the air inlet can be detected by the filtering mechanism. The gas can be blown onto the rotating processing plate 7 after being filtered by the filter screen plate 3, and the residue after being filtered by the filter screen plate 3 can be left in the adsorption tank 9. After a large amount of gas is left in the adsorption tank 9, it can flow to the collection box 33 for collection;

[0032] The filtering mechanism includes a filter screen plate 3 which forms a sliding fit with the inner wall of the air inlet, a rotating groove 4 surrounding the filter screen plate 3 is opened at one end of the fixed frame of the filter screen plate 3, a plurality of evenly distributed rotating blocks 5 are slidably connected to the inner wall of the rotating groove 4, a rotating rod 6 is fixedly connected to one end of the rotating block 5, a processing plate 7 is fixedly connected to one end of the rotating rod 6, a plurality of evenly distributed vents 8 are opened at one end of the processing plate 7, and a plurality of evenly distributed adsorption grooves 9 are opened at one end of the processing plate 7.

[0033] One end of the processing plate 7 is fixedly connected to a rotating shaft 10, and the rotating shaft 10 and the filter screen plate 3 are rotatably connected via a bearing. A plurality of evenly distributed impellers 11 are fixedly connected to the surface of the rotating shaft 10, and a scraper 12 is fixedly connected to the top of the rotating shaft 10. The scraper 12 is in contact with the filter screen plate 3 and can rotate when the rotating shaft 10 rotates. The rotation of the scraper 12 can clean the surface of the filter screen plate 3, thereby maintaining the passability of the filter screen plate 3.

[0034] A T-shaped connecting groove 13 is provided on the inner wall at both ends of the air inlet, and a T-shaped connecting block 14 is slidably connected to the inner wall of the connecting groove 13. The connecting block 14 is fixedly connected to the filter screen plate 3, and a connecting spring 16 is fixedly connected to the top of the connecting block 14. The connecting spring 16 contacts the top inner wall of the connecting groove 13. The inner wall of the air inlet is connected to an air intake pipe 15 through a thread, and the air intake pipe 15 contacts the fixed frame of the filter screen plate 3. The connecting block 14 can slide in the inner wall of the connecting groove 13, and the connecting spring 16 can be squeezed by cooperating with the rotation of the air intake pipe 15. After the air intake pipe 15 is installed, the connecting block 14 can be fixed, and the elastic force of the connecting spring 16 can lock the air intake pipe 15.

[0035] The cleaning mechanism includes a movable active rod 17. An active groove 18 is provided on the inner wall of one end of the shell 1 to form a sliding fit with the active rod 17. A movable bar 19 is provided on one side of the movable rod 17. A brush bar 20 is fixedly connected to one end of the movable bar 19. The brush bar 20 is in contact with the sensor body 2. When the movable rod 17 moves, the brush bar 20 can clean the surface of the sensor body 2. At this time, the movable rod 17 slides in the inner wall of the movable groove 18.

[0036] A reset groove 21 is provided on one side of the movable rod 17, and a movable spring 22 is fixedly connected to the inner wall of one end of the reset groove 21, and a movable block 23 is fixedly connected to one end of the movable spring 22. A sliding fit is formed between the movable block 23 and the inner wall of the reset groove 21. The movable block 23 can slide in the inner wall of the reset groove 21, so that the brush strip 20 can adapt to surfaces of different heights of the sensor body 2.

[0037] A gear groove 24 is provided at one end of the housing 1, and a gear shaft 25 is rotatably connected to the inner wall of one end of the gear groove 24 through a bearing, and a half gear 26 is fixedly connected to the surface of the gear shaft 25. A limiting opening 27 extending into the movable groove 18 is provided on the inner wall of one end of the housing 1, and a rack 28 is slidably connected to the inner wall of the limiting opening 27. A limiting spring 29 is fixedly connected between the inner wall of one side of the limiting opening 27 and one side of the rack 28, and the rack 28 is fixedly connected to the movable rod 17, and the rack 28 is meshed with the half gear 26. The half gear 26 can apply force to the rack 28 during rotation, and the rack 28 can slide in the inner wall of the limiting opening 27 under the force, and the general tooth groove of the limiting spring 29 and the half gear 26 can make the rack 28 reciprocate.

[0038] A transmission groove 30 is opened on the inner wall of one side of one end of the shell 1, and a transmission shaft 31 is rotatably connected to the inner wall of one end of the transmission groove 30 through a bearing. Transmission plates 32 are fixedly connected on both sides of the transmission shaft 31. The transmission shaft 31 is fixedly connected to the gear shaft 25. The transmission shaft 31 is set to rotate when the transmission plate 32 is subjected to force, thereby enabling the brush strip 20 to brush the sensor body 2 and provide power. It can also be located in the transmission groove 30 to facilitate the installation of the processing plate 7.

[0039] The collecting mechanism includes a collecting box 33. A collecting port 34 extending into the movable groove 18 is opened on the outer wall of one end of the shell 1. A sliding fit is formed between the inner wall of the collecting port 34 and the collecting box 33. The collecting box 33 and the shell 1 are fixedly connected by connecting parts and bolts. The collecting box 33 can slide in the inner wall of the collecting port 34. Impurities in the collecting box 33 can be processed when disassembled, and the impurities in the shell 1 can be collected in the collecting port 34.

[0040] A moving port 35 is provided on the top outer wall of the shell 1, and a moving rod 36 with a T-shaped structure is slidably connected to the inner wall of the moving port 35. A moving spring 38 is fixedly connected between the top inner wall of the moving rod 36 and the top outer wall of the shell 1. The moving spring 38 is sleeved on the surface of the moving rod 36, and a pressure plate 37 that forms a sliding fit with the inner wall of the shell 1 is fixedly connected to the bottom of the moving rod 36. When the moving rod 36 slides in the inner wall of the moving port 35, the pressure in the shell 1 can be changed through the pressure plate 37. When pressure is applied to the pressure plate 37, air flow can be generated at the air inlet, which can not only perform handheld detection of combustible gas, but also clean the sensor body 2 and impurities in the shell 1 when the air flow flows.

[0041] A disconnection detector body 39 is fixedly connected to the inner wall at one end of the shell 1, and a display screen 40 is fixedly connected to the outer wall at one end of the shell 1. The controller is connected to the disconnection detector body 39 and the display screen 40 respectively through wires, and the display screen 40 can receive the signal transmitted by the disconnection detector body 39 for display.

[0042] During use, the filter screen plate 3 and the processing plate 7 assembly are slid into the air inlet, at which time the connecting block 14 slides in the inner wall of the connecting groove 13, and then the air inlet pipe 15 is rotated into the air inlet, so that the filter screen plate 3 can be fixed. After ventilation in the air inlet pipe 15, the air flow can be filtered through the filter screen plate 3, and the air flow can apply force to the impeller 11 so that the impeller 11 rotates in conjunction with the rotating shaft 10. The rotation of the rotating shaft 10 can rotate the processing plate 7, so that the impurities in the gas can be evenly retained in the adsorption groove 9. After the adsorption groove 9 is full, it can be thrown into the collection box 33 under the action of centrifugal force. When the housing 1 is handheld for detection, the moving rod 36 can also be pulled to slide in the inner wall of the moving port 35. The movement of the moving rod 36 can make the pressure plate 37 slide in the inner wall of the housing 1, so that the gas in the housing 1 can be drawn to the sensor body 2 through the air inlet, and the detection operation can be performed on it.

[0043] When airflow enters the air inlet, the airflow can apply force to the transmission plate 32, and the transmission plate 32 cooperates with the transmission shaft 31 to rotate in the transmission groove 30, wherein the rotation of the transmission shaft 31 can rotate the gear shaft 25, and the rotation of the gear shaft 25 can rotate the half gear 26, and the rotation of the half gear 26 can apply force to the rack 28, and the rack 28 can slide in the inner wall of the limit opening 27 under the force, at this time, the limit spring 29 is deformed, and the movement of the rack 28 can move the movable rod 17, and the movement of the movable rod 17 can make the brush strip 20 clean the surface of the sensor body 2, and the sliding of the movable block 23 in the reset groove 21 can adapt to the surfaces of the sensor body 2 at different heights, and after the half gear 26 is separated from the rack 28, the limit spring 29 can reset the rack 28 and perform the next cleaning operation;

[0044] When installing the filter screen plate 3, the processing plate 7 can apply force to the transmission plate 32 and make the transmission plate 32 located in the transmission groove 30. After the installation is completed, the transmission plate 32 is located between the processing plate 7 and the filter screen plate 3. When collecting impurities, the impurities located between the processing plate 7 and the filter screen plate 3 can flow into the collection box 33 through the inner wall of the housing 1. The staff can regularly open the connecting piece and rotate the bolt to process the impurities in the collection box 33.

[0045] When performing offline detection, the offline detector body 39 determines whether there is power, and continuously sends data of signals when there is power and when there is no power to the controller. The controller detects the unique signal, and the display screen 40 can display the status in the device.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above implementation cases. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A combustible gas detector with detectable disconnection, comprising a housing (1), a sensor body (2) being fixedly connected to the inner wall at one end of the housing (1), a controller connected to the sensor body (2) via an electric wire being fixedly connected to the inner wall at one end of the housing (1), an air inlet being provided at the bottom of the housing (1), and characterized in that: A filtering mechanism is arranged inside the air inlet, a collecting mechanism is arranged outside one end of the shell (1), and a cleaning mechanism is arranged inside the shell (1); The filtering mechanism comprises a filter screen plate (3) which forms a sliding fit with the inner wall of the air inlet; a rotating groove (4) surrounding the filter screen plate (3) is provided at one end of a fixed frame of the filter screen plate (3); a plurality of evenly distributed rotating blocks (5) are slidably connected to the inner wall of the rotating groove (4); a rotating rod (6) is fixedly connected to one end of the rotating block (5); a processing plate (7) is fixedly connected to one end of the rotating rod (6); a plurality of evenly distributed vents (8) are provided at one end of the processing plate (7); and a plurality of evenly distributed adsorption grooves (9) are provided at one end of the processing plate (7); One end of the processing plate (7) is fixedly connected to a rotating shaft (10), the rotating shaft (10) and the filter screen plate (3) are rotatably connected via a bearing, a plurality of evenly distributed impellers (11) are fixedly connected to the surface of the rotating shaft (10), and a scraper (12) is fixedly connected to the top of the rotating shaft (10), and the scraper (12) is in contact with the filter screen plate (3); The cleaning mechanism comprises a movable movable rod (17); an inner wall at one end of the housing (1) is provided with a movable groove (18) which forms a sliding fit with the movable rod (17); a movable bar (19) is provided on one side of the movable rod (17); a brush bar (20) is fixedly connected to one end of the movable bar (19); and the brush bar (20) is in contact with the sensor body (2); A reset groove (21) is provided on one side of the movable rod (17); a movable spring (22) is fixedly connected to the inner wall of one end of the reset groove (21); a movable block (23) is fixedly connected to one end of the movable spring (22); a sliding fit is formed between the movable block (23) and the inner wall of the reset groove (21); A gear groove (24) is provided at one end of the housing (1); a gear shaft (25) is rotatably connected to the inner wall of one end of the gear groove (24) via a bearing; a half gear (26) is fixedly connected to the surface of the gear shaft (25); a limit opening (27) extending into the movable groove (18) is provided at the inner wall of one end of the housing (1); a rack (28) is slidably connected to the inner wall of the limit opening (27); a limit spring (29) is fixedly connected between the inner wall of one side of the limit opening (27) and one side of the rack (28); the rack (28) is fixedly connected to the movable rod (17); and the rack (28) is meshed with the half gear (26); The collecting mechanism comprises a collecting box (33); an outer wall at one end of the shell (1) is provided with a collecting port (34) extending into the movable groove (18); an inner wall of the collecting port (34) and the collecting box (33) form a sliding fit; the collecting box (33) and the shell (1) are fixedly connected via a connecting piece and bolts.

2. The combustible gas detector with detectable disconnection according to claim 1, characterized in that: The inner walls at both ends of the air inlet are provided with connecting grooves (13) in a T-shaped structure, the inner walls of the connecting grooves (13) are slidably connected to connecting blocks (14) in a T-shaped structure, the connecting blocks (14) are fixedly connected to the filter screen plate (3), the top of the connecting block (14) is fixedly connected to a connecting spring (16), the connecting spring (16) is in contact with the inner wall of the top of the connecting groove (13), the inner wall of the air inlet is threadedly connected to an air inlet pipe (15), and the air inlet pipe (15) is in contact with a fixed frame of the filter screen plate (3).

3. The combustible gas detector with detectable disconnection according to claim 1, characterized in that: A transmission groove (30) is formed on an inner wall at one end of the housing (1); a transmission shaft (31) is rotatably connected to the inner wall at one end of the transmission groove (30) via a bearing; transmission plates (32) are fixedly connected to both sides of the transmission shaft (31); and the transmission shaft (31) is fixedly connected to the gear shaft (25).

4. The combustible gas detector with detectable disconnection according to claim 1, characterized in that: The top outer wall of the shell (1) is provided with a moving opening (35), the inner wall of the moving opening (35) is slidably connected to a moving rod (36) in a T-shaped structure, a moving spring (38) is fixedly connected between the top inner wall of the moving rod (36) and the top outer wall of the shell (1), the moving spring (38) is sleeved on the surface of the moving rod (36), and the bottom of the moving rod (36) is fixedly connected to a pressure plate (37) that forms a sliding fit with the inner wall of the shell (1).

5. The combustible gas detector with detectable disconnection according to claim 1, characterized in that: A disconnection detector body (39) is fixedly connected to the inner wall at one end of the shell (1), a display screen (40) is fixedly connected to the outer wall at one end of the shell (1), and the controller is respectively connected to the disconnection detector body (39) and the display screen (40) via electric wires.

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