A detection device for chemical ventilation safety

Abstract

The present invention discloses a detection device for chemical ventilation safety, which relates to the technical field of ventilation safety detection, and includes a detection mechanism and a gas detection device installed on one side inside the detection mechanism. A purification and cleaning mechanism is arranged on one side of the detection mechanism, and a purification carbon plate is arranged inside the purification and cleaning mechanism. The detection mechanism includes a visible collection box. A one-way intake valve is fixedly installed at the center position of the top of the visible collection box, and a sealing protrusion is fixedly installed on the inner side of the top of the one-way intake valve. Among them, a first fixing bracket is fixedly installed at the bottom of the visible collection box close to the one-way intake valve, and a sealing spring is fixedly installed at the center position of the top of the first fixing bracket. Through the guiding spiral blades inside the conical air duct, not only can the guiding effect of the flue gas be realized, but also by using the characteristics that one end of the conical air duct has a large diameter and the other end has a small diameter, the converging effect of the flue gas can be realized, which is convenient for using the gas detection device to detect the flue gas.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation safety detection, and specifically to a detection device for chemical ventilation safety. Background Art

[0002] Ventilation is to use natural or mechanical methods to make the wind unobstructed and reach the room. Ventilation is also called air change, which is to send enough fresh air into the indoor space by mechanical or natural methods, and at the same time discharge the dirty air that does not meet the hygienic requirements in the room. Chemical factories usually generate flammable, explosive and toxic harmful gases during the production process. To ensure the normal operation of production and the occupational health and safety working environment of operators, normal ventilation needs to be carried out in the factory building. To prevent the harmful gases generated during the production process from spreading to other spaces, the harmful gases need to be filtered before being discharged. To be able to master the ventilation efficiency and ensure the safety of the factory building at the same time, it is necessary to detect the ventilation efficiency through experiments.

[0003] Publication No. CN216411218U discloses a ventilation performance detection device for coal mine safety engineering. The horizontal adjustment device includes an inner seat, a bidirectional horizontal cylinder, a left movable seat and a right movable seat. A bidirectional horizontal cylinder is arranged inside the inner seat. The left movable seat and the right movable seat are respectively arranged at both ends of the inner seat. The output rods at both ends of the bidirectional horizontal cylinder are respectively connected to the left movable seat and the right movable seat. By the telescopic movement of the bidirectional horizontal cylinder, the horizontal arc-shaped bracket is driven to separate, so as to adjust the width according to the situation in the mine and improve the support effect. The left vertical cylinder and the right vertical cylinder are respectively arranged inside the left fixed support plate and the right fixed support plate. The output rod of the left vertical cylinder is connected to the left movable support plate, and the output rod of the right vertical cylinder is connected to the right movable support plate. The left vertical cylinder and the right vertical cylinder telescopic, driving the horizontal arc-shaped bracket to move up, so as to adjust the overall height. Multi-directional adjustment can be accurately adjusted according to the situation in the mine, improving the adaptability of the whole device. However, the following problems still exist in the actual use of this patent:

[0004] Although the ventilation performance detection device for coal mine safety engineering drives the horizontal arc-shaped bracket to separate by the telescopic movement of the bidirectional horizontal cylinder, so as to adjust the width according to the situation in the mine and improve the support effect, since the size of the detection device is certain, when the detection probe detects, it cannot accurately detect the relatively large and flowing air range, so the detection result is not representative.

[0005] Therefore, a detection device for chemical ventilation safety is proposed to solve the problems raised above. Summary of the Invention

[0006] The object of the present invention is to provide a detection device for chemical ventilation safety to solve the problem that although the ventilation performance detection device for the coal mine safety project drives the transverse arc-shaped bracket to separate through the telescopic movement of the bidirectional transverse cylinder, thereby adjusting the width according to the situation in the mine and improving the support effect, the size of the detection device is fixed. Therefore, when the detection probe conducts detection, it cannot accurately detect the large-range and flowing air, resulting in unrepresentative detection results.

[0007] To achieve the above object, the present invention provides the following technical solution: A detection device for chemical ventilation safety, including a detection mechanism, and a gas detection device installed on one side inside the detection mechanism;

[0008] A purification and cleaning mechanism is provided on one side of the detection mechanism, and a purification carbon plate is provided inside the purification and cleaning mechanism;

[0009] It further includes:

[0010] The detection mechanism includes a visible collection box, and an intake check valve is fixedly installed at the center position of the top of the visible collection box. A sealing protrusion is fixedly installed inside the top of the intake check valve;

[0011] Among them, a first fixing bracket is fixedly installed at the bottom of the visible collection box close to the intake check valve, and a sealing spring is fixedly installed at the center position of the top of the first fixing bracket;

[0012] Among them, the top of the sealing spring is fixedly connected to a sealing disk, and the sealing disk is in fitting connection with the sealing protrusion.

[0013] Preferably, a detection box body is fixedly installed on one side of the visible collection box. A first rotating bearing and a second rotating bearing are respectively installed on both sides inside the detection box body. Support rings are rotatably connected inside the first rotating bearing and the second rotating bearing, and a conical air duct is fixedly installed between the two support rings.

[0014] Preferably, a plurality of rotating baffles are fixedly installed on the outer side of the middle part of the conical air duct, and a plurality of guiding spiral vanes are fixedly installed on the inner side of the conical air duct. A fixed connecting piece is provided at the top of the detection box body close to the rotating baffle, and limiting baffles are symmetrically installed at the bottom of the fixed connecting piece.

[0015] Preferably, the limiting baffle is in snap-fit connection with the rotating baffle, the fixed connecting piece is in snap-fit connection with the detection box body through the limiting baffle, and a second fixing bracket is fixedly installed around the side of the detection box body close to the second rotating bearing. The gas detection device is fixedly installed at the end of the second fixing bracket.

[0016] Preferably, the purification and cleaning mechanism includes a purification box fixedly installed on one side of the detection box away from the visible collection box. An exhaust pipe is fixedly installed on the side of the purification box away from the detection box. On one side inside the purification box, a fan bracket is fixedly installed, and an exhaust fan is fixedly installed inside the fan bracket.

[0017] Preferably, a purification bracket is fixedly installed inside the purification box. On one side of the purification bracket, purification racks are symmetrically and slidably connected. On the top of the two purification racks, a rack connecting rod is fixedly installed. At the center position of the bottom of the rack connecting rod, a lifting support plate is fixedly installed.

[0018] Preferably, rotating supports are fixedly installed around the bottom of the lifting support plate. The bottom of the rotating support is rotatably connected to a lifting rotating rod. The bottom of the lifting rotating rod is rotatably connected to a lifting sliding sleeve. Inside the lifting sliding sleeve, a lifting sliding rod is slidably connected. On the outside of the lifting sliding rod, a lifting limit frame is fixedly installed. At the center position of the top of the lifting limit frame, a lifting knob is rotatably connected.

[0019] Preferably, a lifting threaded rod is threadedly connected inside the lifting knob. The lifting threaded rod is fixedly installed at the center position of the bottom of the lifting support plate. Around the bottom of the lifting limit frame, lifting support columns are fixedly installed. The lifting support columns are fixedly installed on the top of the purification box. Sealing baffles are symmetrically installed up and down inside the purification bracket. On one side of the purification rack, a number of first meshing gears are meshingly connected. The purification carbon plate is fixedly connected to the first meshing gear. On one side of the top and bottom of the purification carbon plate, splicing grooves are provided. The purification carbon plates are connected end to end in sequence through the splicing grooves.

[0020] Preferably, a motor cover is fixedly installed on one side of the top of the purification box. On one side inside the motor cover, a cleaning motor is fixedly installed. The output end of the cleaning motor is fixedly connected to a sprocket transmission assembly. At the bottom of the sprocket transmission assembly, cleaning threaded rods are symmetrically installed. On the outside of the two cleaning threaded rods, cleaning threaded sleeves are threadedly connected. On one side of each of the two cleaning threaded sleeves, a limit connecting block is fixedly installed. On the side where the two limit connecting blocks are close to each other, cleaning gears are rotatably connected. Between the two cleaning gears, a cleaning roller is fixedly installed. On one side of the cleaning gear, a cleaning rack is meshingly connected. The cleaning rack is fixedly installed on both sides inside the purification box.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: For a detection device for chemical ventilation safety, the guiding spiral blades inside the conical air duct can not only achieve the guiding effect of the flue gas, but also utilize the characteristics that one end of the conical air duct has a large diameter and the other end has a small diameter to achieve the converging effect of the flue gas, facilitating the detection of the flue gas by the gas detection device. By using the meshing connection between the cleaning gear and the cleaning rack, the rotation of the cleaning roller can be realized, and the dust and particulate matter on the surface of the purification carbon plate can be cleaned, improving the purification effect of the purification carbon plate. The specific content is as follows:

[0022] 1. By setting up the detection mechanism, not only can the one-way intake valve be used to ensure that the flue gas only enters and does not exit, but also the visual collection box can be used to observe the amount of flue gas inside, so as to obtain the ventilation volume. The guiding spiral blades inside the conical air duct can not only achieve the guiding effect of the flue gas, but also utilize the characteristics that one end of the conical air duct has a large diameter and the other end has a small diameter to achieve the converging effect of the flue gas, facilitating the detection of the flue gas by the gas detection device. At the same time, when the flue gas contains toxic gases, the conical air duct can be used to detect the toxic gases more effectively, improving the accuracy of detection. By using the first rotating bearing and the second rotating bearing, when the flue gas flows through, a certain rotational force can be generated on the conical air duct, and thus, using the structural characteristics of the guiding spiral blades, the air circulation can be accelerated. When toxic gases are detected, in order to quickly purify and remove the toxic gases, the fixed connection piece and the limit baffle can be pulled out to make the conical air duct rotate freely, accelerating the flue gas circulation, thereby improving the ventilation efficiency. When the toxic gases are removed, in order to save energy, by using the characteristics of the snap connection between the limit baffle and the rotating baffle, the fixation of the conical air duct can be realized, and slow ventilation can be achieved. The ventilation efficiency can be adjusted according to different requirements, which can not only make the air in the internal space of the workshop circulate, but also achieve the effect of saving energy. Introducing flue gas into the visual collection box is convenient for intuitively observing the ventilation effect;

[0023] 2. By setting up the purification and cleaning mechanism, not only can a certain airflow be generated by the exhaust fan inside the purification box to achieve the ventilation effect, but also when the gas detection device detects toxic gases, in order to purify the toxic gases, the lifting and lowering knob can be rotated. Utilizing the threaded connection between the lifting and lowering knob and the lifting and lowering threaded rod, when the lifting and lowering threaded rod descends, it drives the lifting and rotating rod to rotate, and at the same time drives the rack connecting rod at the top and the purification racks on both sides to descend. Utilizing the meshing connection between the purification rack and the first meshing gear, the rotation of the purification carbon plate can be achieved. The splicing groove can be used to connect the head and tail of the purification carbon plate, thereby closing the purification bracket, enabling the flue gas to be purified through the purification carbon plate, and preventing toxic gases from being directly discharged into the air, thus causing air pollution. When purifying toxic gases, since the air contains particulate matter and dust, it will cause blockage of the purification carbon plate, thereby affecting the purification effect of toxic gases. Start the cleaning motor to drive the sprocket transmission assembly and the cleaning threaded rod to rotate, so that the cleaning thread sleeve drives the limit connection block, the cleaning gear and the cleaning roller to move up and down. Utilizing the meshing connection between the cleaning gear and the cleaning rack, the rotation of the cleaning roller can be achieved, and the dust and particulate matter on the surface of the purification carbon plate can be cleaned, improving the purification effect of the purification carbon plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the whole invention;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of the cross-section of the detection mechanism in the invention;

[0026] Figure 3 It is a three-dimensional structure schematic diagram of the first rotating bearing and the second rotating bearing in the invention;

[0027] Figure 4 It is a three-dimensional structure schematic diagram of the cross-section of the conical air duct in the invention;

[0028] Figure 5 It is a three-dimensional structure schematic diagram of the cross-section of the purification and cleaning mechanism in the invention;

[0029] Figure 6 It is a three-dimensional structure schematic diagram of the purification bracket in the invention;

[0030] Figure 7 It is a three-dimensional structure schematic diagram of the cross-section of the lifting limit frame in the invention;

[0031] Figure 8 It is a three-dimensional structure schematic diagram of the horizontal state of the purification carbon plate in the invention;

[0032] Figure 9 It is a three-dimensional structure schematic diagram of the cleaning roller in the invention;

[0033] Figure 10 For the present invention Figure 9 Three-dimensional enlarged structure diagram of area A in the present invention;

[0034] Figure 11 Three-dimensional structure diagram of the purification carbon plate in the vertical state in the present invention.

[0035] In the figure: 1. Detection mechanism; 101. Visual collection box; 102. Intake one-way valve; 103. Sealing protrusion; 104. First fixing bracket; 105. Sealing spring; 106. Sealing retaining disk; 107. Detection box body; 108. First rotating bearing; 109. Second rotating bearing; 110. Support ring; 111. Conical air duct; 112. Rotating baffle; 113. Guide spiral blade; 114. Fixed connecting piece; 115. Limit baffle; 116. Second fixing bracket; 117. Gas detection equipment; 2. Purification and cleaning mechanism; 201. Purification box; 202. Exhaust pipe; 203. Fan bracket; 204. Exhaust fan; 205. Purification bracket; 206. Purification rack; 207. Rack connecting rod; 208. Lifting support disk; 209. Rotating support; 210. Lifting rotating rod; 211. Lifting sliding sleeve; 212. Lifting sliding rod; 213. Lifting limit frame; 214. Lifting knob; 215. Lifting threaded rod; 216. Lifting support column; 217. Sealing baffle; 218. First meshing gear; 219. Purification carbon plate; 220. Splicing groove; 221. Motor cover; 222. Cleaning motor; 223. Sprocket drive assembly; 224. Cleaning threaded rod; 225. Cleaning threaded sleeve; 226. Limit connecting block; 227. Cleaning gear; 228. Cleaning roller; 229. Cleaning rack. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-11, the present invention provides a technical solution: a detection device, including a detection mechanism 1 and a gas detection device 117 installed on one side inside the detection mechanism 1. A purification and cleaning mechanism 2 is provided on one side of the detection mechanism 1, and a purification carbon plate 219 is provided inside the purification and cleaning mechanism 2. The detection mechanism 1 includes a visible collection box 101. A one-way intake valve 102 is fixedly installed at the center of the top of the visible collection box 101. A sealing protrusion 103 is fixedly installed inside the top of the one-way intake valve 102. Among them, a first fixing bracket 104 is fixedly installed at the bottom of the visible collection box 101 near the one-way intake valve 102. A sealing spring 105 is fixedly installed at the center of the top of the first fixing bracket 104. Among them, the top of the sealing spring 105 is fixedly connected to a sealing disc 106, and the sealing disc 106 is in fit connection with the sealing protrusion 103. A detection box body 107 is fixedly installed on one side of the visible collection box 101. A first rotating bearing 108 and a second rotating bearing 109 are respectively installed on both sides inside the detection box body 107. Support rings 110 are rotatably connected inside both the first rotating bearing 108 and the second rotating bearing 109. A conical air duct 111 is fixedly installed between the two support rings 110. The one-way intake valve 102 is used to achieve only intake and no exhaust of flue gas, and the amount of flue gas inside can be observed through the visible collection box 101, so as to obtain the ventilation volume. The guiding spiral blades 113 inside the conical air duct 111 can not only achieve the guiding effect of flue gas, but also utilize the characteristics that one end of the conical air duct 111 has a large diameter and the other end has a small diameter to achieve the converging effect of flue gas, which is convenient for detecting flue gas by the gas detection device 117.

[0038] A number of rotating baffles 112 are fixedly installed on the outer side of the middle part of the conical air duct 111, and a number of guiding spiral blades 113 are fixedly installed on the inner side of the conical air duct 111. A fixed connecting piece 114 is arranged at the top of the detection box body 107 close to the rotating baffle 112. Limit baffles 115 are symmetrically installed at the bottom of the fixed connecting piece 114. The limit baffles 115 are snap-connected with the rotating baffle 112. The fixed connecting piece 114 is snap-connected with the detection box body 107 through the limit baffles 115. A second fixed bracket 116 is fixedly installed around one side of the detection box body 107 close to the second rotating bearing 109. The gas detection device 117 is fixedly installed at the end of the second fixed bracket 116. When the flue gas contains toxic gases, the conical air duct 111 can be used to more effectively detect the toxic gases and improve the detection accuracy. By using the first rotating bearing 108 and the second rotating bearing 109, when the flue gas flows, a certain rotational force can be generated on the conical air duct 111, so that the air flow can be accelerated by using the structural characteristics of the guiding spiral blades 113. When toxic gases are detected, in order to quickly purify and remove the toxic gases, the conical air duct 111 can be freely rotated by pulling out the fixed connecting piece 114 and the limit baffles 115, which can accelerate the flue gas flow and thus improve the ventilation efficiency. When the toxic gases are removed, in order to save energy, by using the characteristic that the limit baffles 115 are snap-connected with the rotating baffle 112, the fixation of the conical air duct 111 can be realized, and slow ventilation can be achieved. The ventilation efficiency can be adjusted according to different requirements, which can not only make the air in the internal space of the factory building circulate, but also achieve the effect of saving energy. Flue gas is introduced into the visual collection box 101 to facilitate the intuitive observation of the ventilation effect.

[0039] The purification and cleaning mechanism 2 includes a purification box 201. The purification box 201 is fixedly installed on one side of the detection box body 107 away from the visual collection box 101. An exhaust pipe 202 is fixedly installed on the side of the purification box 201 away from the detection box body 107. A fan bracket 203 is fixedly installed on one side inside the purification box 201. An exhaust fan 204 is fixedly installed inside the fan bracket 203. A purification bracket 205 is fixedly installed inside the purification box 201. Purification racks 206 are symmetrically and slidably connected to one side of the purification bracket 205. A rack connecting rod 207 is fixedly installed at the top of the two purification racks 206. A lifting support disk 208 is fixedly installed at the center of the bottom of the rack connecting rod 207. Rotating supports 209 are fixedly installed around the bottom of the lifting support disk 208. A lifting rotating rod 210 is rotatably connected to the bottom of the rotating support 209. A lifting sliding sleeve 211 is rotatably connected to the bottom of the lifting rotating rod 210. A lifting sliding rod 212 is slidably connected inside the lifting sliding sleeve 211. A lifting limit frame 213 is fixedly installed on the outer side of the lifting sliding rod 212. A lifting knob 214 is rotatably connected to the center of the top of the lifting limit frame 213. A lifting threaded rod 215 is threadedly connected inside the lifting knob 214. The lifting threaded rod 215 is fixedly installed at the center of the bottom of the lifting support disk 208. Lifting support columns 216 are fixedly installed around the bottom of the lifting limit frame 213. The lifting support columns 216 are fixedly installed on the top of the purification box 201. Sealing baffles 217 are symmetrically installed up and down inside the purification bracket 205. A number of first meshing gears 218 are meshingly connected to one side of the purification rack 206. A purification carbon plate 219 is fixedly connected to the first meshing gear 218. By using the exhaust fan 204 inside the purification box 201 to generate a certain air flow, the effect of ventilation can be achieved. At the same time, when the gas detection device 117 detects toxic gas, in order to purify the toxic gas, the lifting knob 214 can be rotated. By using the characteristic that the lifting knob 214 is threadedly connected to the lifting threaded rod 215, when the lifting threaded rod 215 descends, it drives the lifting rotating rod 210 to rotate, and at the same time drives the rack connecting rod 207 at the top and the purification racks 206 on both sides to descend. By using the characteristic that the purification rack 206 is meshingly connected to the first meshing gear 218, the rotation of the purification carbon plate 219 can be realized. By using the splicing groove 220, the head and tail of the purification carbon plate 219 can be connected end to end, so as to close the purification bracket 205, and the flue gas is purified through the purification carbon plate 219, avoiding the direct discharge of toxic gas into the air, thus causing air pollution.

[0040] Both the top and bottom sides of the purification carbon plate 219 are provided with splicing grooves 220. The purification carbon plates 219 are connected end to end through the splicing grooves 220. A motor cover 221 is fixedly installed on one side of the top of the purification box 201. A cleaning motor 222 is fixedly installed on one side inside the motor cover 221. The output end of the cleaning motor 222 is fixedly connected to a sprocket drive assembly 223. Cleaning threaded rods 224 are symmetrically installed at the bottom of the sprocket drive assembly 223. Cleaning thread sleeves 225 are threadedly connected to the outer sides of the two cleaning threaded rods 224. A limit connection block 226 is fixedly installed on one side of each of the two cleaning thread sleeves 225. A cleaning gear 227 is rotatably connected to one side of each of the two limit connection blocks 226 that are close to each other. A cleaning roller 228 is fixedly installed between the two cleaning gears 227. One side of the cleaning gear 227 is meshed with a cleaning rack 229. The cleaning rack 229 is fixedly installed on both sides inside the purification box 201. When purifying toxic gases, since the air contains particulate matter and dust, it will cause a blockage phenomenon with the purification carbon plate 219, thereby affecting the purification effect of the toxic gases. Start the cleaning motor 222 to drive the sprocket drive assembly 223 and the cleaning threaded rods 224 to rotate, so that the cleaning thread sleeve 225 drives the limit connection block 226, the cleaning gear 227 and the cleaning roller 228 to move up and down. Utilize the characteristic of the meshing connection between the cleaning gear 227 and the cleaning rack 229, thereby realizing the rotation of the cleaning roller 228, and being able to clean the dust and particulate matter on the surface of the purification carbon plate 219, and improving the purification effect of the purification carbon plate 219.

[0041] Working principle: Before using the detection equipment for chemical ventilation safety, it is necessary to first check the overall situation of the device to determine that it can work normally. According to Figure 1 - Figure 11As shown in the figure, first, the flue gas is introduced into the visible collection box 101. The intake check valve 102 is used to ensure that the flue gas can only enter and not exit. The amount of flue gas inside can be observed through the visible collection box 101, so as to obtain the ventilation volume. The guiding spiral blade 113 inside the conical air duct 111 can not only guide the flue gas, but also, due to the characteristics of the conical air duct 111 with a large diameter at one end and a small diameter at the other end, achieve the convergence of the flue gas, which is convenient for using the gas detection device 117 to detect the flue gas. At the same time, when there are toxic gases in the flue gas, the conical air duct 111 can more effectively detect the toxic gases and improve the detection accuracy. The first rotating bearing 108 and the second rotating bearing 109 can generate a certain rotational force on the conical air duct 111 when the flue gas is flowing, so that, due to the structural characteristics of the guiding spiral blade 113, the air flow can be accelerated. When toxic gases are detected, in order to quickly purify and remove the toxic gases, the fixed connection piece 114 and the limit baffle 115 can be pulled out to make the conical air duct 111 rotate freely, which can accelerate the flue gas flow and thus improve the ventilation efficiency. When the toxic gases are removed, in order to save energy, due to the engagement connection between the limit baffle 115 and the rotating baffle 112, the conical air duct 111 can be fixed, and slow ventilation can be achieved. The ventilation efficiency can be adjusted according to different requirements, which can not only make the air in the internal space of the factory building circulate, but also achieve the effect of saving energy. Introducing flue gas into the visible collection box 101 is convenient for visually observing the ventilation effect.

[0042] Secondly, a certain air flow is generated by the exhaust fan 204 inside the purification box 201 to achieve the effect of ventilation. At the same time, when the gas detection device 117 detects toxic gas, in order to purify the toxic gas, the lifting knob 214 can be rotated. By utilizing the characteristic that the lifting knob 214 is threadedly connected to the lifting screw rod 215, when the lifting screw rod 215 descends, it drives the lifting rotating rod 210 to rotate, and at the same time drives the rack connecting rod 207 at the top and the purification racks 206 on both sides to descend. By utilizing the characteristic that the purification rack 206 is meshed and connected to the first meshing gear 218, the rotation of the purification carbon plate 219 can be realized. By using the splicing groove 220, the head and tail of the purification carbon plate 219 can be connected end to end, thereby closing the purification bracket 205, enabling the flue gas to be purified through the purification carbon plate 219, and preventing toxic gas from being directly discharged into the air, thus causing air pollution. When purifying toxic gas, since the air contains particulate matter and dust, it will cause blockage of the purification carbon plate 219, thereby affecting the purification effect of the toxic gas. The cleaning motor 222 is started to drive the sprocket transmission assembly 223 and the cleaning screw rod 224 to rotate, so that the cleaning thread sleeve 225 drives the limit connection block 226, the cleaning gear 227 and the cleaning roller 228 to move up and down. By utilizing the characteristic that the cleaning gear 227 is meshed and connected to the cleaning rack 229, the rotation of the cleaning roller 228 can be realized, and the dust and particulate matter on the surface of the purification carbon plate 219 can be cleaned, improving the purification effect of the purification carbon plate 219.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A detection device for chemical ventilation safety, comprising a detection mechanism (1), and a gas detection device (117) installed on one side of the detection mechanism (1); A purification and cleaning mechanism (2) is provided on one side of the detection mechanism (1), and a purification carbon plate (219) is provided inside the purification and cleaning mechanism (2); It is characterized in that Also includes: The detection mechanism (1) comprises a visible collection box (101), an air intake check valve (102) is fixedly mounted at the center of the top of the visible collection box (101), and a sealing protrusion (103) is fixedly mounted on the inner side of the top of the air intake check valve (102); Wherein, a first fixing bracket (104) is fixedly installed at the bottom of the visible collection box (101) close to the air intake check valve (102), and a sealing spring (105) is fixedly installed at the top center position of the first fixing bracket (104); The top of the sealing spring (105) is fixedly connected with a sealing baffle (106), and the sealing baffle (106) is fittedly connected to the sealing protrusion (103); A detection box (107) is fixedly mounted on one side of the visible collection box (101); a first rotating bearing (108) and a second rotating bearing (109) are respectively mounted on both sides of the interior of the detection box (107); support rings (110) are rotatably connected to the interior of the first rotating bearing (108) and the second rotating bearing (109); a conical air cylinder (111) is fixedly mounted between the two support rings (110); A plurality of rotating baffles (112) are fixedly mounted on the outer side of the middle portion of the conical air cylinder (111), a plurality of guide spiral blades (113) are fixedly mounted on the inner side of the conical air cylinder (111), a fixed connecting piece (114) is provided near the top of the rotating baffle (112) of the detection box (107), and a limit baffle (115) is symmetrically mounted on the bottom of the fixed connecting piece (114); The limit baffle (115) is snap-connected with the rotating baffle (112); the fixed connecting piece (114) is snap-connected with the detection box (107) via the limit baffle (115); a second fixed bracket (116) is fixedly mounted around one side of the detection box (107) close to the second rotating bearing (109); and the gas detection device (117) is fixedly mounted on an end of the second fixed bracket (116).

2. A detection device for chemical ventilation safety according to claim 1, characterized in that: The purification and cleaning mechanism (2) comprises a purification box (201), the purification box (201) being fixedly mounted on a side of the detection box (107) away from the visible collection box (101), an exhaust pipe (202) being fixedly mounted on the side of the purification box (201) away from the detection box (107), a fan bracket (203) being fixedly mounted on one side of the interior of the purification box (201), and an exhaust fan (204) being fixedly mounted inside the fan bracket (203).

3. A detection device for chemical ventilation safety according to claim 2, characterized in that: A purification bracket (205) is fixedly installed inside the purification box (201), a purification rack (206) is symmetrically slidably connected to one side of the purification bracket (205), a rack connecting rod (207) is fixedly installed on the top of the two purification racks (206), and a lifting support plate (208) is fixedly installed at the center position of the bottom of the rack connecting rod (207).

4. A detection device for chemical ventilation safety according to claim 3, characterized in that: A rotating support (209) is fixedly installed around the bottom of the lifting support plate (208); a lifting rotating rod (210) is rotatably connected to the bottom of the rotating support (209); a lifting sliding sleeve (211) is rotatably connected to the bottom of the lifting rotating rod (210); a lifting sliding rod (212) is slidably connected to the inside of the lifting sliding sleeve (211); a lifting limit frame (213) is fixedly installed on the outside of the lifting sliding rod (212); and a lifting knob (214) is rotatably connected to the top center of the lifting limit frame (213).

5. A detection device for chemical ventilation safety according to claim 4, characterized in that: The lifting knob (214) is internally threadedly connected to a lifting threaded rod (215), the lifting threaded rod (215) is fixedly mounted at the bottom center of the lifting support plate (208), the lifting support columns (216) are fixedly mounted around the bottom of the lifting limit frame (213), the lifting support columns (216) are fixedly mounted on the top of the purification box (201), a sealing baffle (217) is symmetrically mounted inside the purification bracket (205), one side of the purification rack (206) is meshedly connected to a plurality of first meshing gears (218), the purification carbon plate (219) is fixedly connected to the first meshing gears (218), the top and bottom sides of the purification carbon plate (219) are both provided with splicing grooves (220), and the purification carbon plates (219) are connected end to end in sequence through the splicing grooves (220).

6. A detection device for chemical ventilation safety according to claim 5, characterized in that: A motor cover (221) is fixedly mounted on one side of the top of the purification box (201); a cleaning motor (222) is fixedly mounted on one side of the interior of the motor cover (221); an output end of the cleaning motor (222) is fixedly connected to a sprocket transmission assembly (223); cleaning threaded rods (224) are symmetrically mounted on the bottom of the sprocket transmission assembly (223); cleaning threaded sleeves (225) are threadedly connected to the outer sides of the two cleaning threaded rods (224); a limiting connection block (226) is fixedly mounted on one side of the two cleaning threaded sleeves (225); cleaning gears (227) are rotatably connected to the two limiting connection blocks (226) on the sides close to each other; a cleaning roller (228) is fixedly mounted between the two cleaning gears (227); a cleaning rack (229) is meshingly connected to one side of the cleaning gear (227); and the cleaning rack (229) is fixedly mounted on both sides of the interior of the purification box (201).

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