An intelligent linkage explosion-proof exhaust device for gas leakage

Abstract

The present invention discloses an intelligent linkage explosion-proof exhaust device for gas leakage, which relates to the technical field of protection equipment. The present invention includes a master control box and a multi-point detection device, and a detection end capable of detecting multi-point gas leakage is arranged on the multi-point detection device. The present invention detects gas at multiple points through the detection end on the multi-point detection device. When gas leakage occurs, the check valve at the corresponding position is closed through the control circuit board, thereby blocking the flow of gas in the pipeline at this point and preventing further gas leakage. At the same time, the multi-point detection device is used to detect multiple points, which is applicable to scenarios with multiple stove positions such as kitchens or restaurants. While one area is under maintenance, the stove positions in other areas can be kept in normal use, avoiding high-cost losses caused by shutdown. Then, by turning on the exhaust fan and the audible and visual alarm, the gas leakage point is alarmed and dispersed, greatly reducing the possibility of gas deflagration and assisting in improving the maintenance efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of protective equipment, and particularly to an intelligent linkage explosion-proof exhaust device for gas leakage. Background Art

[0002] Gas is a gaseous fuel, the most common fuel in household kitchens or restaurants, usually used in combination with cooking stoves. It is necessary to connect the gas to the cooking stove through a gas pipeline. Due to the flammable and high-concentration characteristics of gas, when gas leakage occurs and accumulates in a large amount indoors, it will pose a risk to human life and explosion. Therefore, it is extremely important to handle gas leakage.

[0003] When dealing with gas leakage, it is first necessary to promptly detect the occurrence of gas leakage. The reasons for gas leakage can be roughly divided into two types. One is that the gas pipeline ruptures, resulting in gas leakage. The other is that the cooking stove is continuously turned on but not ignited. Therefore, to prevent gas leakage, it is necessary to detect the areas near the gas pipeline and the cooking stove. However, in scenarios such as restaurants with multiple cooking stoves, the number of gas pipelines and cooking stoves that need to be detected is relatively large. The existing detection devices have a limited detection range and poor detection effects on cooking stove positions and gas pipelines with long distances. At the same time, even if gas leakage is detected, it is difficult to assist in determining the location of gas leakage. Only the main gas valve can be stopped and then repaired one by one, resulting in a long waiting time and a large amount of cost loss for business premises such as restaurants. At the same time, the existing exhaust devices cannot specifically exhaust the gas at the leakage location, resulting in poor exhaust efficiency of gas and difficulty in reducing the harm caused by gas.

[0004] Therefore, an intelligent linkage explosion-proof exhaust device for gas leakage is proposed. Summary of the Invention

[0005] The purpose of the present invention is: to solve the above problems, the present invention provides an intelligent linkage explosion-proof exhaust device for gas leakage.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0007] An intelligent linkage explosion-proof exhaust device for gas leakage includes a master control box and a multi-point detection device, with a detection end capable of detecting gas leakage at multiple points provided on the multi-point detection device. An intake pipe is provided in the master control box, a check valve is fixedly installed at the top end of the intake pipe, a gas distribution valve is fixedly installed at the bottom end of the intake pipe, and the output ends of the gas distribution valve are multiple and are all connected to an outlet pipe through a check valve. An exhaust fan and an audible and visual alarm are provided on the multi-point detection device, the rear end of the exhaust fan is connected to an outlet duct, and a control circuit board connected to the multi-point detection device is provided in the master control box. The control circuit board is connected to the exhaust fan, the audible and visual alarm, the check valve, and the detection end on the multi-point detection device.

[0008] Further, the master control box further includes a master control screen which is arranged on the front of the master control box. The master control screen is a touch screen and is connected to the control circuit board.

[0009] Further, the master control box further includes a temperature and humidity sensor which is fixedly installed on the side of the master control box, and a dial for displaying the readings of the temperature and humidity sensor is arranged on the front of the master control box.

[0010] Further, the master control box further includes a fire smoke detector which is fixedly installed on the top surface of the master control box and is connected to the control circuit board.

[0011] Further, the master control box further includes a 485 communication interface, a mobile APP communication module, a 110 alarm module, an active contact module and a passive contact module. The 485 communication interface, the mobile APP communication module, the 110 alarm module, the active contact module and the passive contact module are all arranged on the control circuit board, and an opening for accommodating the 485 communication interface is arranged on the side wall of the master control box.

[0012] Further, the master control box further includes a reset button and a plurality of manual buttons. The reset button is fixedly installed on the front of the master control box, the number of the manual buttons is plural and they are fixedly installed on the front of the master control box, and the reset button and the manual buttons are connected to the passive contact module.

[0013] Further, the multi-point detection device includes a detection component and a driving component. The detection component includes a fixing plate, a connecting frame, a guide rod, a slider, a detection cylinder and a gas sensor. The fixing plate is a rectangular body and the upper and lower surfaces and the left and right surfaces in the middle are all curved. The connecting frame is threadedly connected to the front of the fixing plate. The front of the connecting frame is open and the inner wall of the bottom side is fixedly connected to the guide rod. A slider is fixedly connected to each of the upper and lower surfaces of the detection cylinder. The side surface of the lower slider is provided with an opening and is sleeved on the guide rod. The front of the detection cylinder is open and a gas sensor is fixedly installed on the inner wall of the front. The gas sensor is connected to the control circuit board. A filter screen assembly for filtering oil fumes is arranged on the inner wall of the detection cylinder in front of the gas sensor. Among them, the driving component is used to drive the detection cylinder to move to realize multi-point detection, and several photoelectric sensors for detecting the position of the detection cylinder are arranged on the inner wall of the upper side of the connecting frame.

[0014] Further, the detection component further includes a plurality of mounting seats which are fixedly connected to the upper and lower wall surfaces of the connecting frame, and the mounting seats are used for mounting exhaust fans and audible and visual alarms.

[0015] Furthermore, the driving assembly includes a driving motor, a transmission belt, a gear 1, a force plate, a gear 2, a rotating column and a rotating column, and the detection assembly also includes a cover plate 1 and a cover plate 2, the front of the fixed plate is provided with a circle of groove, and the transmission belt is sleeved in the groove, the cover plate 1 is threadedly connected to the front of the fixed plate, the center of the cover plate 1 is hollowed out, the cover plate 2 is threadedly connected to the front of the fixed plate and is located at the inner ring of the cover plate 1, the driving motor is fixedly installed on the lower side of the center of the front of the cover plate 2, the transmission shaft of the driving motor passes through the cover plate 2, the transmission shaft of the driving motor is clamped with the rotating column, the gear 3 is fixed on the left outer wall of the rotating column, the front of the fixed plate is provided with a groove connecting the transmission belt and accommodating the rotating column, the outer wall of the inner ring of the transmission belt is provided with a tooth groove and corresponds to the gear 3, the outer wall of the front part of the transmission belt is fixedly connected to a row of gear teeth 1 between the cover plate 1 and the cover plate 2, the back of the two sliders are fixedly connected to a gear tooth 2, the back of the gear tooth 2 is provided with a row of slide grooves 1, the slide groove 1 is sleeved with the gear tooth 2, and the gear tooth 2 and the slide groove 1 are connected by a spring.

[0016] Furthermore, the driving assembly also includes an elastic air cushion, a connecting pipe, a piston plate, a skateboard, and a turntable. A circular groove is provided in the middle of the fixed plate on the rear side of the transmission belt, and the center position of the circular groove is inserted into the turntable. Cams are provided on the left and right ends of the turntable. Slide grooves 2 are provided inside the fixed plate on the left and right sides of the turntable. The piston plate is inserted into the second slide groove. The side of the piston plate corresponding to the turntable is fixedly connected to the skateboard, the skateboard passes through the fixed plate and is connected to the annular groove. The end of the skateboard away from the piston plate is curved, and the side of the piston plate away from the skateboard is fixedly connected to the elastic air cushion. A connecting pipe is provided on the left and right sides of the fixed plate, the rear end of the connecting pipe is connected to the elastic air cushion at the corresponding position, and the front end of the connecting pipe passes through the fixed plate, the second cover plate, the connecting frame and is fixedly connected and connected to the detection cylinder.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention performs gas detection on multiple points through the detection end on the multi-point detection device. When a gas leak occurs, the check valve at the corresponding position is closed by controlling the circuit board, thereby blocking the flow of gas in the pipeline at that point to prevent further leakage of the gas. At the same time, the multi-point detection device is used to detect multiple points, which is suitable for scenes with multiple stoves such as kitchens or restaurants. While maintenance is being carried out, the stoves in other areas can remain in normal use to avoid high cost losses caused by shutdowns. Then, by turning on the exhaust fan and the sound and light alarm, the gas leakage point is alarmed and dispersed, which greatly reduces the possibility of gas explosion and helps improve the efficiency of maintenance.

[0019] 2. When a fire breaks out initially, the present invention emits a signal to the control circuit board through the induction of smoke by the fire smoke detector. The control circuit board closes both the check valve on the intake pipe and the power supply of the device, preventing the further spread of the fire. At the same time, it triggers the 110 alarm module to give an alarm, providing timely early warning and loss prevention for the fire situation, thus playing a role in protecting against the fire.

[0020] 3. The present invention drives the detection cylinder to move left and right through the driving component. When the detection cylinder moves to a position where the gas sensor detects a gas leakage point, the control circuit board controls the check valve at this stove position to close and stop the gas supply, which can prevent the further leakage of gas without affecting the use of other stove positions. At the same time, the movable detection cylinder enables a single gas sensor to detect gas leakage at multiple points, which is beneficial to ensuring the coverage of gas detection and reducing the equipment use and maintenance costs.

[0021] 4. According to the number of stove positions actually used, the present invention installs exhaust fans and audible and visual alarms on the corresponding stove positions through mounting seats. For the stove positions that are not in use, the exhaust fans and audible and visual alarms can be disassembled and stored, thereby increasing the service life of these devices.

[0022] 5. When the detection cylinder moves to a position where it senses gas leakage through the driving component, the exhaust fan and audible and visual alarm at the corresponding position are started. The exhaust fan can accurately correspond to the position of gas leakage for exhaust operation, quickly discharging the gas, and assisting the user to know the corresponding stove point and pipeline of gas leakage, improving the efficiency and convenience for maintenance.

[0023] 6. The detection cylinder is moved a certain distance by the conveyor belt. Then, when the conveyor belt stops, the detection cylinder conducts gas leakage detection corresponding to the stove position until it is moved a certain distance to the next stove position later, reducing the residence time of the detection cylinder at positions far from the stove position, enabling the detection cylinder to stay at each stove position for a certain time to conduct gas leakage detection, ensuring the accuracy and efficiency of gas detection positions.

[0024] 7. Through the continuous operation of the conveyor belt, the present invention can achieve the automatic reciprocating movement of the detection cylinder, and then cyclically conduct gas leakage detection on multiple stove positions, further ensuring the coverage of the detection function and the detection effect, ensuring that the gas leakage position can be detected before serious consequences occur, and thus playing a better protective role.

[0025] 8. The present invention drives the turntable to rotate by means of a rotating column to produce a squeezing effect on the elastic air cushion. The air in the elastic air cushion forms an air flow and is transported into the detection cylinder through a connecting pipe, and then discharged from the front of the detection cylinder to clean the filter screen on the detection cylinder, avoiding the problem of blockage. Then, an air extraction effect is generated by the rebound of the elastic air cushion, and the outside air is drawn into the detection cylinder for detection by the gas sensor. Thus, an effect of drawing air into the detection cylinder for detection is produced when the detection cylinder is stationary, further improving the detection effect and intensity of gas leakage, avoiding the problem that the initial content of gas leakage is small and out of the detection range of the gas sensor, and ensuring the protection effect of preventing gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 is a structural schematic diagram of the master control device of the present invention;

[0028] Figure 3 is an internal structural schematic diagram of the master control device of the present invention;

[0029] Figure 4 is an internal structural schematic diagram of the master control device of the present invention;

[0030] Figure 5 is an exploded structural schematic diagram of the multi-point detection device of the present invention;

[0031] Figure 6 is an internal structural schematic diagram of the detection cylinder of the present invention;

[0032] Figure 7 is a structural schematic diagram of the force-bearing plate of the present invention;

[0033] Figure 8 is a structural schematic diagram of the fixing plate of the present invention;

[0034] Figure 9 is the present invention Figure 8 enlarged view of part A;

[0035] Figure 10 is a sectional structural schematic diagram of the fixing plate of the present invention;

[0036] Reference numerals: 1, master control box; 101, master control panel; 102, 485 communication interface; 103, temperature and humidity sensor; 104, control circuit board; 105, mobile phone APP communication module; 106, 110 alarm module; 107, fire smoke detector; 108, active contact module; 109, passive contact module; 1010, reset button; 1011, manual button; 1012, exhaust fan; 1013, air outlet pipe; 1014, sound and light alarm; 1015, air inlet pipe; 1016, gas shunt valve; 1017, outlet pipe; 1018, check valve; 2, multi-point detection device; 3, detection component; 301, fixing plate; 302, cover plate one; 303, cover plate two; 304, connecting frame; 305, guide rod; 306, slider; 307, detection cylinder; 308, gas sensor; 309, mounting seat; 4, drive component; 401, drive motor; 402, transmission belt; 403, gear one; 404, force receiving plate; 405, gear two; 406, elastic air cushion; 407, connecting pipe; 408, piston plate; 409, sliding plate; 4010, turntable; 4011, rotating column; 4012, gear three; 5, chute one; 6, chute two. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] As Figures 1-10 shown, an intelligent linkage explosion-proof exhaust device for gas leakage includes a master control box 1 and a multi-point detection device 2. The multi-point detection device 2 is provided with a detection end capable of detecting multi-point gas leakage. An air inlet pipe 1015 is arranged in the master control box 1. The top end of the air inlet pipe 1015 penetrates through the master control box 1 and a check valve 1018 is fixedly installed. The bottom end of the air inlet pipe 1015 is fixedly installed with a gas distribution valve 1016. The output ends of the gas distribution valve 1016 are multiple and are all connected to an air outlet pipe 1017 through a check valve 1018. The air outlet pipe 1017 penetrates through the bottom surface of the master control box 1. A exhaust fan 1012 and an audible and visual alarm 1014 are arranged on the multi-point detection device 2. The rear end of the exhaust fan 1012 is connected to an air outlet duct 1013. The air outlet duct 1013 is used to guide gas to a safe area. A control circuit board 104 connected to the multi-point detection device 2 is arranged in the master control box 1. The control circuit board 104 is connected to the exhaust fan 1012, the audible and visual alarm 1014, the check valve 1018 and the detection end on the multi-point detection device 2. The control circuit board 104 triggers the exhaust fan 1012 and the audible and visual alarm 1014 to perform corresponding actions according to the detection results of the detection end on the multi-point detection device 2, and starts the check valve 1018 to trigger the closing valve action on the air outlet pipe 1017 or the air inlet pipe 1015. It should be noted that the exhaust fan 1012 is driven by an explosion-proof motor, and the check valve 1018 is an electric valve.

[0042] Specifically, the detection end on the multi-point detection device 2 is used to detect gas at multiple points. When gas leakage occurs, the check valve 1018 at the corresponding position is closed through the control circuit board 104, thereby blocking the flow of gas in the pipeline at this point and preventing further gas leakage. At the same time, the detection of multiple points by the multi-point detection device 2 is applicable to scenarios such as kitchens or restaurants with multiple stove positions. While one area is under maintenance, the stove positions in other areas can remain in normal use, avoiding high-cost losses caused by shutdowns. Then, by turning on the exhaust fan 1012 and the audible and visual alarm 1014, alarms are given and the gas leakage point is dispersed, greatly reducing the possibility of gas deflagration and assisting in improving the maintenance efficiency. The air outlet pipe 1017 is used to connect the pipelines of each stove position to transfer gas.

[0043] The main control box 1 further includes a main control screen 101, which is arranged on the front of the main control box 1. The main control screen 101 adopts a touch screen and is connected to the control circuit board 104.

[0044] The main control box 1 further includes a temperature and humidity sensor 103, which is fixedly installed on the side of the main control box 1, and a dial for displaying the readings of the temperature and humidity sensor 103 is arranged on the front of the main control box 1.

[0045] The main control box 1 further includes a fire smoke detector 107, which is fixedly installed on the top surface of the main control box 1 and is connected to the control circuit board 104.

[0046] The main control box 1 further includes a 485 communication interface 102, a mobile phone APP communication module 105, a 110 alarm module 106, an active contact module 108 and a passive contact module 109. The 485 communication interface 102, the mobile phone APP communication module 105, the 110 alarm module 106, the active contact module 108 and the passive contact module 109 are all arranged on the control circuit board 104, and an opening for accommodating the 485 communication interface 102 is arranged on the side wall of the main control box 1.

[0047] The main control box 1 further includes a reset button 1010 and a manual button 1011. The reset button 1010 is fixedly installed on the front of the main control box 1, the number of the manual buttons 1011 is plural and they are fixedly installed on the front of the main control box 1, and the reset button 1010 and the manual button 1011 are connected to the passive contact module 109.

[0048] Specifically, the reset button 1010 and the manual button 1011 are used to trigger the passive contact module 109. When the passive contact module 109 is triggered, the exhaust fan 1012 is started, so as to realize the function of manually opening the exhaust effect. The active contact module 108 is used to operate the exhaust fan 1012 and the check valve 1018 through the control of the control circuit board 104. When the detection end of the multi-point detection device 2 triggers an opening signal, the exhaust fan 1012 is electrically triggered to start through the active contact module 108. The main control screen 101 is used to display the relevant information of the control circuit board 104 and its connected devices and perform control. The 485 communication interface 102 is used for multi-machine communication. The temperature and humidity sensor 103 is used to detect the external temperature and humidity and reflect the detection signal to the dial. The mobile phone APP communication module 105 is used to enable the control circuit board 104 to communicate with the mobile phone APP to realize remote control. When a fire breaks out in the initial stage, the fire smoke detector 107 senses the smoke and emits a signal to the control circuit board 104. The control circuit board 104 closes the valve of the check valve 1018 on the intake pipe 1015 and the power supply of the equipment, so as to avoid the further spread of the fire. At the same time, the 110 alarm module 106 is triggered to give an alarm, so as to give a timely early warning and stop loss for the fire situation, thus playing a role in protecting against the fire.

[0049] The multi-point detection device 2 includes a detection component 3 and a driving component 4. The detection component 3 includes a fixing plate 301, a connecting frame 304, a guide rod 305, a slider 306, a detection cylinder 307 and a gas sensor 308. The fixing plate 301 is a rectangular body, and the upper and lower surfaces and the left and right surfaces in the middle are all curved. The connecting frame 304 is threadedly connected to the front of the fixing plate 301. The front of the connecting frame 304 is open, and the bottom inner wall is fixedly connected to the guide rod 305. A slider 306 is fixedly connected to both the upper and lower surfaces of the detection cylinder 307. The side surface of the lower slider 306 is provided with an opening and is sleeved on the guide rod 305. The two sliders 306 are respectively attached to the upper and lower inner walls of the connecting frame 304. The front of the detection cylinder 307 is open, and the front inner wall is fixedly installed with a gas sensor 308. The gas sensor 308 is connected to the control circuit board 104. A filter screen assembly for filtering oil fumes is arranged on the inner wall of the detection cylinder 307 in front of the gas sensor 308. Among them, the driving component 4 is used to drive the detection cylinder 307 to move to achieve multi-point detection. A plurality of photoelectric sensors for detecting the position of the detection cylinder 307 are arranged on the upper inner wall of the connecting frame 304. It should be noted that the filter screen assembly is a known technology in the art and will not be elaborated here.

[0050] Specifically, first, the fixing plate 301 is fixedly installed on the wall surface or above the stove position, so that the detection cylinder 307 is in a position where it can detect gas. The gas sensor 308 detects the gas and emits a signal to enable the control circuit board 104 to control devices such as the exhaust fan 1012. The driving component 4 drives the detection cylinder 307 to move left and right. When the detection cylinder 307 moves to a position where the gas sensor 308 detects a gas leakage point, the control circuit board 104 controls the check valve 1018 at this stove position to close and stop the gas transmission, which can prevent further gas leakage without affecting the use of other stove positions. At the same time, the movable detection cylinder 307 enables a single gas sensor 308 to achieve multi-point gas leakage detection, which is beneficial to ensuring the coverage range of gas detection and reducing the equipment use and maintenance costs. The control circuit board 104 controls the exhaust fan 1012 to start to disperse the gas, avoiding the explosion risk caused by the accumulation of gas in the room. At the same time, the sound and light alarm 1014 is started for alarm.

[0051] The detection component 3 further includes a mounting seat 309. The number of mounting seats 309 is plural and is fixedly connected to the upper and lower wall surfaces of the connecting frame 304. The mounting seat 309 is used to mount the exhaust fan 1012 and the sound and light alarm 1014. It should be noted that the active contact module 108 has a plurality of active contacts, the passive contact module 109 has a plurality of passive contacts, and the plurality of contacts are respectively connected to a plurality of exhaust fans 1012, sound and light alarms 1014 and check valves 1018 for respectively starting and stopping the exhaust fans 1012, sound and light alarms 1014 and check valves 1018.

[0052] Specifically, according to the number of stove positions actually used, the exhaust fan 1012 and the audible and visual alarm 1014 are installed on the corresponding stove positions through the mounting base 309. For the stove positions that are not needed, the exhaust fan 1012 and the audible and visual alarm 1014 can be disassembled and stored, thereby increasing the service life of these devices. When the detection cylinder 307 moves to the position where gas leakage is sensed through the driving assembly 4, the exhaust fan 1012 and the audible and visual alarm 1014 at the corresponding position are started, so that the exhaust fan 1012 can accurately correspond to the position of gas leakage for exhaust operation, quickly discharge the gas, and assist the user to know the corresponding stove points and pipelines of gas leakage, improving the efficiency and convenience for maintenance.

[0053] The driving assembly 4 includes a driving motor 401, a transmission belt 402, a first gear 403, a stress plate 404, a second gear 405, a rotating column 4011 and a rotating column 4011. The detection assembly 3 further includes a first cover plate 302 and a second cover plate 303. A circle of grooves is formed on the front surface of the fixing plate 301, and the transmission belt 402 is sleeved in the grooves. The first cover plate 302 is threadedly connected to the front surface of the fixing plate 301, and the center of the first cover plate 302 is hollowed out. The second cover plate 303 is threadedly connected to the front surface of the fixing plate 301 and is located inside the first cover plate 302. The rear side parts of the first cover plate 302 and the second cover plate 303 correspond to the transmission belt 402. The first cover plate 302 and the second cover plate 303 limit the transmission belt 402 on the fixing plate 301. The driving motor 401 is fixedly installed on the lower side of the center of the front surface of the second cover plate 303. The transmission shaft of the driving motor 401 penetrates through the second cover plate 303. The transmission shaft of the driving motor 401 is clamped with the rotating column 4011. A third gear 4012 is fixed on the outer wall of the left side of the rotating column 4011. It should be noted that the third gear 4012 is arranged on the outer wall of the upper part of the rotating column 4011. A groove is formed on the front surface of the fixing plate 301 that communicates with the transmission belt 402 and accommodates the rotating column 4011. Tooth grooves are formed on the outer wall of the inner circle of the transmission belt 402 and correspond to the third gear 4012. A row of first gears 403 is fixedly connected to the front part of the outer wall of the transmission belt 402 between the first cover plate 302 and the second cover plate 303. A second gear 405 is fixedly connected to the back of each of the two sliders 306. A row of first chutes 5 is formed on the back of the second gear 405, and the second gear 405 is sleeved in the first chute 5. The second gear 405 and the first chute 5 are connected by a spring. It should be noted that the first gear 403 is made of rubber material, and a spring with a large elastic force is used in the first chute 5. At the same time, an opening for accommodating the driving motor 401 and the second gear 405 is provided on the connecting frame 304.

[0054] Specifically, when the drive motor 401 is started, the transmission shaft of the drive motor 401 drives the rotating column 4011 to rotate. When the third gear 4012 rotates with the rotating column 4011 and is inserted into the tooth groove on the lower side of the transmission belt 402, it drives the transmission belt 402 to operate a certain distance until the third gear 4012 disengages from the tooth groove through meshing with the transmission belt 402. When the transmission belt 402 operates, it drives the first gear 403 to move. When the first gear 403 is on the upper side of the transmission belt 402 and corresponds to the second gear 405, the first gear 403 meshes with the second gear 405 and pushes the detection cylinder 307 to move to the right, so that the detection cylinder 307 moves a certain distance. By controlling the number of teeth of the third gear 4012, the moving distance of the detection cylinder 307 can be controlled to make the moving distance of the detection cylinder 307 consistent with the distance to the stove position. Then, when the transmission belt 402 stops, the detection cylinder 307 corresponds to the stove position for gas leakage detection until it is moved a certain distance to the next stove position later, reducing the residence time of the detection cylinder 307 at a position far from the stove position. The detection cylinder 307 can stay at each stove position for a certain time to detect gas leakage, ensuring the accuracy and efficiency of the gas detection position. When the detection cylinder 307 moves to one end of the connecting frame 304, the connecting frame 304 stops moving and generates a large resistance, so that when the first gear 403 continues to move, it will exert a pressure on the second gear 405 to make it retract into the first chute 5 to ensure the continuous movement of the first gear 403. At the same time, the first gear 403 moves from the upper side to the lower side as it moves with the transmission belt 402, and then moves to the left as the transmission belt 402 operates, and pushes the second gear 405 on the lower force plate 404, thereby pushing the detection cylinder 307 to move to the left. Through the continuous operation of the transmission belt 402, the automatic reciprocating movement of the detection cylinder 307 can be realized, and then the gas leakage of multiple stove positions can be detected cyclically, further ensuring the coverage range of the detection function and the detection effect, ensuring that the gas leakage position can be detected before serious consequences occur, so as to initiate a better protective effect.

[0055] The driving component 4 further includes an elastic air cushion 406, a connecting pipe 407, a piston plate 408, a sliding plate 409, and a turntable 4010. A circular groove is formed in the middle of the fixed plate 301 at the rear side of the transmission belt 402, and the center position of the circular groove is sleeved with the turntable 4010. The center of the front surface of the turntable 4010 is fixedly connected to the center of the back surface of the rotating column 4011. Cams are provided at both the left and right ends of the turntable 4010. Sliding grooves two 6 are formed inside the fixed plate 301 on both the left and right sides of the turntable 4010. The piston plate 408 is sleeved inside the sliding groove two 6. One side of the piston plate 408 corresponding to the turntable 4010 is fixedly connected to the sliding plate 409. The sliding plate 409 penetrates through the fixed plate 301 and is communicated with the annular groove. The end of the sliding plate 409 away from the piston plate 408 is curved. The side of the piston plate 408 away from the sliding plate 409 is fixedly connected to the elastic air cushion 406. A connecting pipe 407 is provided on both the left and right sides of the fixed plate 301. The rear end of the connecting pipe 407 is communicated with the elastic air cushion 406 at the corresponding position. The front end of the connecting pipe 407 penetrates through the fixed plate 301, the cover plate two 303, and the connecting frame 304 and is fixedly connected and communicated with the detection cylinder 307. It should be noted that the connecting pipe 407 is made of a flexible hose.

[0056] Specifically, when the third gear tooth 4012 rotates with the rotating column 4011 to engage with the tooth groove on the lower side of the transmission belt 402 to drive the transmission belt 402 to operate, the cam on the turntable 4010 is in a state of disengaging from the sliding plate 409. When the third gear tooth 4012 rotates to the left side of the rotating column 4011 and the transmission belt 402 stops operating, the turntable 4010 rotates with the rotating column 4011 and first squeezes the sliding plate 409 to make it contract into the sliding groove two 6. The piston plate 408 is stressed to produce a squeezing effect on the elastic air cushion 406. The air in the elastic air cushion 406 forms an air flow and is transported into the detection cylinder 307 through the connecting pipe 407, and then discharged from the front surface of the detection cylinder 307 to clean the filter screen on the detection cylinder 307 and avoid the problem of blockage. Then, when the turntable 4010 rotates away from squeezing the sliding plate 409, the elastic air cushion 406 rebounds to produce a pumping effect, and the pumping effect is transmitted through the connecting pipe 407 to pump the external air into the detection cylinder 307 for the gas sensor 308 to detect. Thus, when the detection cylinder 307 is stationary, an effect of pumping air into it for detection is generated, further improving the detection effect and intensity of gas leakage, avoiding the problem that the initial content of gas leakage is less and outside the detection range of the gas sensor 308, and ensuring the protection effect of preventing gas leakage.

[0057] In summary, the gas detection is carried out at multiple points through the detection ends on the multi-point detection device 2. When gas leakage occurs, the check valve 1018 at the corresponding position is closed through the control circuit board 104, thereby blocking the flow of gas in the pipeline at this point and preventing further gas leakage. Then, by turning on the exhaust fan 1012 and the audible and visual alarm 1014, the gas leakage point is alarmed and the gas is dispersed. The reset button 1010 and the manual button 1011 are used to trigger the passive contact module 109. When the passive contact module 109 is triggered, it starts the 485 communication interface 102, thus realizing the function of manually turning on the exhaust effect. The active contact module 108 is used to operate the exhaust fan 1012 and the check valve 1018 through the control of the control circuit board 104. When the detection end of the multi-point detection device 2 triggers the opening signal, the exhaust fan 1012 is electrically triggered to start through the active contact module 108. The master control screen 101 is used to display and control the relevant information of the control circuit board 104 and its connected devices. The 485 communication interface 102 is used for multi-machine communication. The temperature and humidity sensor 103 is used to detect the external temperature and humidity and reflect the detection signal on the dial. The mobile phone APP communication module 105 is used to enable the control circuit board 104 to communicate with the mobile phone APP to achieve remote control. When a fire breaks out in the initial stage, the fire smoke detector 107 senses the smoke and sends a signal to the control circuit board 104. The control circuit board 104 closes both the check valve 1018 on the air inlet pipe 1015 and the power supply of the equipment, avoiding the further spread of the fire. The fixing plate 301 is fixedly installed on the wall or above the stove top position, so that the detection cylinder 307 is in a position where it can detect gas. The gas sensor 308 detects the gas and sends a signal to the control circuit board 104 to control devices such as the 485 communication interface 102. The detection cylinder 307 is driven to move left and right through the driving assembly 4. When the detection cylinder 307 moves to the position where the gas sensor 308 detects the gas leakage point, the control circuit board 104 controls the check valve 1018 at this stove top position to be closed to stop the gas supply. The control circuit board 104 controls the exhaust fan 1012 to start to disperse the gas, avoiding the explosion risk caused by the accumulation of gas in the room. At the same time, the audible and visual alarm 1014 is started for alarm. According to the number of stove top positions actually used, the exhaust fan 1012 and the audible and visual alarm 1014 are installed on the corresponding stove top positions through the mounting seat 309. When the detection cylinder 307 moves to the position where it senses gas leakage through the driving assembly 4, the exhaust fan 1012 and the audible and visual alarm 1014 at the corresponding position are started. When the driving motor 401 is started, the transmission shaft of the driving motor 401 drives the rotating column 4011 to rotate. When the third gear 4012 rotates with the rotating column 4011 and inserts into the tooth groove on the lower side of the transmission belt 402, it drives the transmission belt 402 to operate a certain distance through meshing with the transmission belt 402 until the third gear 4012 disengages from the tooth groove. When the transmission belt 402 operates, it drives the first gear 403 to move.When the first gear tooth 403 is on the upper side of the transmission belt 402 and corresponds to the second gear tooth 405, the first gear tooth 403 meshes with the second gear tooth 405 and pushes the detection cylinder 307 to move to the right, so that the detection cylinder 307 moves a certain distance. When the detection cylinder 307 moves to one end of the connection frame 304, the connection frame 304 stops moving and generates a large resistance, so that when the first gear tooth 403 continues to move, it will exert a pressure on the second gear tooth 405 to make it retract into the first chute 5 to ensure the continuous movement of the first gear tooth 403. At the same time, the first gear tooth 403 moves from the upper side to the lower side as the transmission belt 402 moves, and then moves to the left as the transmission belt 402 runs, and pushes the second gear tooth 405 on the lower force plate 404, thereby pushing the detection cylinder 307 to move to the left. When the third gear tooth 4012 rotates with the rotating column 4011 to mesh with the tooth groove on the lower side of the transmission belt 402 to drive the transmission belt 402 to run, the cam on the turntable 4010 is in a state of disengaging from the slide plate 409. When the third gear tooth 4012 rotates to the left side of the rotating column 4011 and the transmission belt 402 stops running, the turntable 4010 first squeezes the slide plate 409 to make it contract into the second chute 6. The piston plate 408 exerts a force on the elastic air cushion 406 to produce a squeezing effect. The air in the elastic air cushion 406 forms an air flow and is delivered into the detection cylinder 307 through the connecting pipe 407, and then discharged from the front of the detection cylinder 307. Then, when the turntable 4010 rotates to disengage from the squeezing of the slide plate 409, the elastic air cushion 406 rebounds to produce a pumping effect, and the pumping effect is transmitted through the connecting pipe 407 to draw external air into the detection cylinder 307 for the gas sensor 308 to detect.,

[0058] 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 by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent linkage explosion-proof exhaust device for gas leakage, comprising a master control box (1) and a multi-point detection device (2), characterized in that, The multi-point detection device (2) is provided with a detection end capable of detecting multi-point gas leakage. An air inlet pipe (1015) is arranged in the master control box (1). A check valve (1018) is fixedly installed at the top end of the air inlet pipe (1015). A gas shunt valve (1016) is fixedly installed at the bottom end of the air inlet pipe (1015). The output ends of the gas shunt valve (1016) are multiple and are all connected to an air outlet pipe (1017) through a check valve (1018). An exhaust fan (1012) and an audible and visual alarm (1014) are arranged on the multi-point detection device (2). The rear end of the exhaust fan (1012) is connected to an air outlet pipe (1013). A control circuit board (104) connected to the multi-point detection device (2) is arranged in the master control box (1). The control circuit board (104) is connected to the exhaust fan (1012), the audible and visual alarm (1014), the check valve (1018), and the detection end on the multi-point detection device (2). The multi-point detection device (2) includes a detection component (3) and a driving component (4). The detection component (3) includes a fixing plate (301), a connecting frame (304), a guide rod (305), a slider (306), a detection cylinder (307), and a gas sensor (308). The fixing plate (301) is in a rectangular shape, and the upper and lower surfaces and the left and right surfaces in the middle are all curved. The connecting frame (304) is threadedly connected to the front surface of the fixing plate (301). The front surface of the connecting frame (304) is open, and a guide rod (305) is fixedly connected to the inner wall of the bottom side. One slider (306) is fixedly connected to each of the upper and lower surfaces of the detection cylinder (307). The side surface of the lower slider (306) is provided with an opening and is sleeved on the guide rod (305). The front surface of the detection cylinder (307) is open, and a gas sensor (308) is fixedly installed on the inner wall of the front surface. The gas sensor (308) is connected to the control circuit board (104). A filter screen assembly for filtering oil fumes is arranged on the inner wall of the detection cylinder (307) in front of the gas sensor (308). The driving component (4) is used to drive the detection cylinder (307) to move to achieve multi-point detection. Several photoelectric sensors for detecting the position of the detection cylinder (307) are arranged on the inner wall of the upper side of the connecting frame (304). The detection component (3) further includes mounting seats (309). The number of the mounting seats (309) is plural and they are fixedly connected to the upper and lower wall surfaces of the connecting frame (304). The mounting seats (309) are used to mount the exhaust fan (1012) and the audible and visual alarm (1014). The driving component (4) includes a driving motor (401), a transmission belt (402), a first set of teeth (403), a stress plate (404), a second set of teeth (405), a rotating column (4011) and a rotating column (4011). The detection component (3) further includes a first cover plate (302) and a second cover plate (303). A circular groove is formed on the front surface of the fixing plate (301), and the transmission belt (402) is sleeved in the groove. The first cover plate (302) is threadedly connected to the front surface of the fixing plate (301), and the center of the first cover plate (302) is hollowed out. The second cover plate (303) is threadedly connected to the front surface of the fixing plate (301) and is located inside the inner circle of the first cover plate (302). The driving motor (401) is fixedly installed on the lower side of the center of the front surface of the second cover plate (303). The transmission shaft of the driving motor (401) penetrates through the second cover plate (303). The transmission shaft of the driving motor (401) is clamped with the rotating column (4011). A third set of teeth (4012) is fixed on the outer wall of the left side of the rotating column (4011). A groove is formed on the front surface of the fixing plate (301) to communicate with the transmission belt (402) and accommodate the rotating column (4011). Tooth grooves are formed on the outer wall of the inner circle of the transmission belt (402) and correspond to the third set of teeth (4012). A row of the first set of teeth (403) is fixedly connected to the outer wall of the front part of the transmission belt (402) between the first cover plate (302) and the second cover plate (303). A second set of teeth (405) is fixedly connected to the back surface of each of the two sliders (306). A row of first chutes (5) is formed on the back surface of the second set of teeth (405). The second set of teeth (405) is sleeved in the first chute (5). The second set of teeth (405) and the first chute (5) are connected by a spring; The driving component (4) further includes an elastic air cushion (406), a connecting pipe (407), a piston plate (408), a sliding plate (409), and a turntable (4010). An annular groove is formed at the middle part of the fixing plate (301) at the rear side of the transmission belt (402), and the center position of the annular groove is sleeved with the turntable (4010). Cams are provided at both the left and right ends of the turntable (4010). Second chutes (6) are formed inside the fixing plate (301) on both the left and right sides of the turntable (4010). The piston plate (408) is sleeved inside the second chute (6). One side of the piston plate (408) corresponding to the turntable (4010) is fixedly connected to the sliding plate (409). The sliding plate (409) penetrates through the fixing plate (301) and communicates with the annular groove. The end of the sliding plate (409) away from the piston plate (408) is curved. One side of the piston plate (408) away from the sliding plate (409) is fixedly connected to the elastic air cushion (406). A connecting pipe (407) is provided on both the left and right sides of the fixing plate (301). The rear end of the connecting pipe (407) communicates with the elastic air cushion (406) at the corresponding position. The front end of the connecting pipe (407) penetrates through the fixing plate (301), the second cover plate (303), the connecting frame (304) and is fixedly connected to and communicates with the detection cylinder (307).

2. The intelligent linkage explosion-proof exhaust device for gas leakage according to claim 1, wherein, The master control box (1) further includes a master control screen (101). The master control screen (101) is arranged on the front of the master control box (1). The master control screen (101) adopts a touch screen and is connected to the control circuit board (104).

3. The intelligent linkage explosion-proof exhaust device for gas leakage according to claim 2, characterized in that, The master control box (1) further includes a temperature and humidity sensor (103). The temperature and humidity sensor (103) is fixedly installed on the side of the master control box (1), and a dial for displaying the readings of the temperature and humidity sensor (103) is arranged on the front of the master control box (1).

4. The intelligent linkage explosion-proof exhaust device for gas leakage according to claim 3, wherein The master control box (1) further includes a fire smoke detector (107). The fire smoke detector (107) is fixedly installed on the top surface of the master control box (1) and is connected to the control circuit board (104).

5. The intelligent linkage explosion-proof exhaust device for gas leakage according to claim 4, wherein, The master control box (1) further includes a 485 communication interface (102), a mobile phone APP communication module (105), a 110 alarm module (106), an active contact module (108) and a passive contact module (109). The 485 communication interface (102), the mobile phone APP communication module (105), the 110 alarm module (106), the active contact module (108) and the passive contact module (109) are all arranged on the control circuit board (104). An opening for accommodating the 485 communication interface (102) is arranged on the side wall of the master control box (1).

6. The intelligent linkage explosion-proof exhaust device for gas leakage according to claim 5, wherein, The master control box (1) further includes a reset button (1010) and a manual button (1011). The reset button (1010) is fixedly installed on the front of the master control box (1). The number of the manual buttons (1011) is plural and they are fixedly installed on the front of the master control box (1). The reset button (1010) and the manual buttons (1011) are connected to the passive contact module (109).

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