A gas detection system and detection method for chemical safety

Abstract

The present invention discloses a gas detection system and detection method for chemical safety, which belongs to the field of chemical gas detection. A gas detection system for chemical safety includes a shell and a detection chamber, and also includes: a detection unit arranged in the detection chamber, used to detect gas in a chemical plant; a dust cleaning unit arranged in the detection chamber, used to filter dust and the like in the gas during gas detection, wherein the detection unit can drive the dust cleaning unit to clean the filtered dust and the like; a storage unit arranged between the shell and the detection chamber, wherein the detection unit can drive the storage unit to adjust the relative position between the detection chamber and the shell; a vibration mechanism arranged between the storage unit and the detection chamber, wherein the storage unit can drive the vibration mechanism to drive the dust cleaning unit to vibrate; the present invention can overcome the problems of poor gas detection effect, difficulty in accurately finding the location of the problem, cumbersome use, and poor protection.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical gas detection, and in particular to a gas detection system and a detection method for chemical safety. Background Art

[0002] Any technology that uses chemical methods to change the composition and structure of substances or synthesize new substances belongs to chemical production technology, that is, chemical process, and the resulting products are called chemicals or chemical products. At first, such products were produced in workshops, which later evolved into factories and gradually formed a specific production industry, namely the chemical industry. During the processing, toxic, harmful, flammable and explosive gases may be produced. Once a leak occurs, a more serious safety accident will occur. Therefore, it is necessary to detect the gas in the surrounding environment during processing to ensure the safety of the processing.

[0003] At present, gas detection in chemical processing usually requires staff to use handheld detectors to detect designated locations, or to inhale surrounding gases into detection equipment for detection. The handheld type has a small scope of application and is difficult to achieve real-time detection during the processing process. Existing detection equipment mainly detects gases within a certain range around the device by fixing the device at a designated location. Since the gas concentration at each location may be different, the detection data will be biased, the detection effect is general, and it is difficult to accurately find the location of the problem. In addition, during use, the filter needs to be frequently cleaned or replaced, which is cumbersome, and the protection of the equipment is poor when not in use. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art of poor gas detection effect, difficulty in accurately finding the location of the problem, cumbersome use and poor protection, and to propose a gas detection system and detection method for chemical safety.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A gas detection system for chemical safety includes a shell and a detection chamber, and also includes: a detection unit arranged in the detection chamber, used to detect gas in a chemical plant; a dust cleaning unit arranged in the detection chamber, used to filter dust and the like in the gas during gas detection, wherein the detection unit can drive the dust cleaning unit to clean the filtered dust and the like; a storage unit arranged between the shell and the detection chamber, wherein the detection unit can drive the storage unit to adjust the relative position between the detection chamber and the shell; and a vibration mechanism arranged between the storage unit and the detection chamber, wherein the storage unit can drive the vibration mechanism to drive the dust cleaning unit to vibrate.

[0007] In order to facilitate the detection of the surrounding gas, preferably, the detection part includes a motor fixedly connected to the detection chamber, a plurality of air inlet holes are provided inside the detection chamber, an air storage cavity is provided on the side of the detection chamber close to the motor, the air storage cavity is communicated with the air inlet hole, a detection head is fixedly connected to the inner wall of the air inlet hole, the output end of the motor extends into the air storage cavity, and an impeller is fixedly connected to the output end of the motor.

[0008] In order to prevent dust in the gas from affecting the detection of the gas and reduce the accumulation of dust on the filter plate, further, the dust-proof cleaning part includes a filter plate arranged on the side of the detection chamber close to the air inlet, a mounting groove is provided on the side of the detection chamber close to the air inlet, the filter plate is movably connected in the mounting groove, an exhaust hole is provided in the detection chamber, one end of the exhaust hole is communicated with the bottom of the air storage cavity, and the other end of the exhaust hole extends to the top of the detection chamber, a mounting cavity is provided on the side of the detection chamber close to the exhaust hole, a rotating shaft is rotatably connected to the side of the exhaust hole close to the mounting cavity, a wind wheel and a first driving bevel gear are fixedly connected to the rotating shaft, a reciprocating screw is rotatably connected to the side of the detection chamber close to the mounting cavity, and one end of the reciprocating screw close to the mounting cavity is fixedly connected to the first driven bevel gear meshing with the first driving bevel gear, and a cleaning member is provided on the reciprocating screw, wherein the filter plate extends to the inside of the air inlet, and the side of the exhaust hole close to the air inlet is arc-shaped, the cleaning member matches the reciprocating screw, and the cleaning member fits the filter plate.

[0009] In order to ensure that the dust on the filter plate is cleaned more thoroughly and to facilitate the collection of dust after cleaning, the cleaning member further includes a movable plate matching the reciprocating screw, the movable plate is fixedly connected with an outer scraper, the inner part of the outer scraper is symmetrically and slidingly connected with two groups of inner scrapers, and multiple groups of first springs are fixedly connected between the two groups of inner scrapers, wherein the inner scraper and the outer scraper are both fitted with the filter plate, a drain trough is provided on the side of the inspection bin close to the air inlet, the drain trough is inclined, and the end of the drain trough close to the air inlet is located below the outer scraper and the inner scraper, and a collection box is provided on the side of the inspection bin close to the drain trough.

[0010] In order to facilitate adapting to the height of the second driving bevel gear and the second driven bevel gear, the storage portion further includes a linkage shaft slidably connected to the output end of the motor, a second spring is fixedly connected between the linkage shaft and the output end of the motor, an end of the linkage shaft away from the output end of the motor is fixedly connected to the second driving bevel gear, a plurality of groups of sliding grooves are provided inside the shell, a slider is slidingly connected inside the sliding groove, a screw is rotatably connected to the slider, and an end of the screw away from the slider is fixedly connected to the second driven bevel gear meshing with the second driving bevel gear, wherein the screw includes a threaded portion and a smooth portion, and the threaded portions of the two groups of screws in the same direction are symmetrically arranged.

[0011] In order to facilitate the adjustment of the relative position between the detection chamber and the shell, and to ensure the stability of the detection chamber during operation, the storage portion further includes a threaded block arranged on the screw, and a support rod is rotatably connected between the threaded block and the bottom of the shell and the bottom of the detection chamber, and an internal thread matching the threaded portion of the screw is arranged inside the threaded block.

[0012] In order to ensure the stability of the threaded block when it is reset, it further includes a fixing plate fixedly connected to the smooth part of the screw, and a third spring is fixedly connected to the side of the fixing plate close to the threaded block, wherein the fixing plate is located between the slider and the threaded part of the screw, the third spring is sleeved on the screw, and the end of the third spring away from the fixing plate is in contact with the threaded block.

[0013] In order to accelerate the shedding of dust and the like on the filter plate and ensure that the dust and the like on the filter plate are more thoroughly granulated, the vibration mechanism further includes a driving wheel fixedly connected to the screw, a mounting seat is fixedly connected to the bottom of the detection bin, a connecting shaft is rotatably connected to the mounting seat, a driven wheel is rotatably connected to the connecting shaft, a limiting groove is provided on the side of the detection bin close to the mounting seat, a limiting block is slidably connected inside the limiting groove, a tensioning wheel is rotatably connected to the limiting block, a fourth spring is fixedly connected between the limiting block and the limiting groove, a belt is sleeved on the driving wheel, the driven wheel and the tensioning wheel, a cam is fixedly connected to the connecting shaft, wherein the driving wheel is located between the threaded portion of the screw and the second driven bevel gear, and the cam is located below the filter plate.

[0014] In order to facilitate finding the source of gas abnormalities, it further includes an alarm fixedly connected to the top of the detection chamber and matching the number and positions of the air inlets, and the shell is provided with running wheels matching the number and positions of the air inlets, and the alarm and the running wheels are electrically connected to the detection head.

[0015] A detection method for a gas detection system for chemical safety, comprising the following steps:

[0016] Step 1: Move the equipment to the designated location in the chemical plant and turn on the detection unit;

[0017] Step 2: The detection unit will suck gas into the detection chamber and detect the gas through the detection unit;

[0018] Step 3: When the data of the detection parts in different directions are abnormal, the alarm in the corresponding direction will sound an alarm and drive the walking wheel to move in the corresponding direction;

[0019] Step 4: The inhaled gas will first filter the dust in the gas under the action of the filter plate, and then the inhaled gas will drive the dust cleaning part to rotate and clean the filter plate;

[0020] Step 5: When detecting the gas, the detection part drives the storage part to drive the detection chamber to extend out of the shell. At the same time, the storage part drives the vibration mechanism to rotate, knock the filter plate, and accelerate the shedding of dust on the filter plate;

[0021] Step 6: After the detection is completed, the detection chamber drives the storage part to rotate in the opposite direction under the action of its own gravity, so that the detection chamber is stored in the shell.

[0022] Compared with the prior art, the present invention provides a gas detection system and detection method for chemical safety, which has the following beneficial effects:

[0023] 1. The gas detection system for chemical safety sucks external gas into the detection chamber through the detection part and detects the gas. At the same time, according to the data detected by the detection head in different directions, the alarm in the corresponding direction warns the staff, and at the same time controls the walking wheel to drive the shell and the detection chamber to move in the corresponding direction. On the one hand, it can increase the effective range of gas detection, and on the other hand, it can facilitate the staff to find the source of abnormal gas, thereby improving the safety of the chemical processing process.

[0024] 2. The chemical safety gas detection system can first filter the inhaled gas through the filter plate to prevent dust in the gas from affecting the gas detection. At the same time, the detection unit can drive the dust cleaning unit to clean the dust adsorbed on the filter plate. On the one hand, it can prevent dust from clogging the filter plate, and on the other hand, it can reduce the frequency of staff cleaning the filter plate, making the operation simpler.

[0025] 3. The gas detection system for chemical safety can drive the storage part to rotate through the detection part, so that when the equipment detects the gas, it automatically drives the detection chamber to extend out of the shell to facilitate the detection of the gas. When not in use, the detection chamber is automatically stored in the shell under the action of its own gravity, thereby improving the protection effect of the detection chamber.

[0026] 4. The gas detection system for chemical safety can drive the vibration mechanism to rotate when detecting gas through the storage part, and intermittently knock the filter plate, so that the filter plate vibrates when filtering dust, etc., which can accelerate the falling of dust, etc. on the filter plate.

[0027] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can overcome the problems of poor gas detection effect, difficulty in accurately finding the location of the problem, cumbersome use and poor protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a gas detection system for chemical safety proposed by the present invention.

[0029] Figure 2 This is a schematic cross-sectional structure diagram of a gas detection system for chemical safety proposed by the present invention.

[0030] Figure 3 This is a partial side structural schematic diagram of an exhaust hole and a mounting cavity in a chemical safety gas detection system proposed by the present invention.

[0031] Figure 4 The present invention is a schematic diagram of a top cross-sectional structure of a cleaning component in a chemical safety gas detection system.

[0032] Figure 5 The present invention is a schematic diagram of a partial side cross-sectional structure of a vibration mechanism and a detection chamber in a gas detection system for chemical safety proposed by the present invention.

[0033] Figure 6 This is a structural schematic diagram of a cam in a gas detection system for chemical safety proposed by the present invention.

[0034] Figure 7 A gas detection system for chemical safety proposed by the present invention Figure 2 Schematic diagram of the structure of part A in .

[0035] Figure 8 A gas detection system for chemical safety proposed by the present invention Figure 2 Schematic diagram of the structure of part B.

[0036] In the figure: 1, housing; 2, detection chamber; 3, walking wheel; 4, air inlet; 5, detection head; 6, alarm; 7, air storage chamber; 8, motor; 9, impeller; 10, exhaust hole; 11, installation chamber; 12, rotating shaft; 13, wind wheel; 14, first driving bevel gear; 15, reciprocating screw rod; 16, first driven bevel gear; 17, installation groove; 18, filter plate; 19, cleaning member; 191, movable plate; 192, outer scraper; 193, inner scraper; 194, first spring; 20, drainage trough; 21, collection box; 22, Linkage shaft; 23, second spring; 24, second driving bevel gear; 25, slide groove; 26, slider; 27, screw; 28, second driven bevel gear; 29, threaded block; 30, support rod; 31, fixing plate; 32, third spring; 33, vibration mechanism; 331, driving wheel; 332, mounting seat; 333, connecting shaft; 334, driven wheel; 335, limiting groove; 336, limiting block; 337, fourth spring; 338, tensioning wheel; 339, belt; 3310, cam; 40, capsule; 41, lever. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention. Example

[0039] Reference Figure 1-Figure 8 A gas detection system for chemical safety includes a shell 1 and a detection chamber 2, and also includes: a detection unit arranged in the detection chamber 2, for detecting gas in a chemical plant; a dust cleaning unit arranged in the detection chamber 2, for filtering dust and the like in the gas during gas detection, wherein the detection unit can drive the dust cleaning unit to clean the filtered dust and the like; a storage unit arranged between the shell 1 and the detection chamber 2, wherein the detection unit can drive the storage unit to adjust the relative position between the detection chamber 2 and the shell 1; a vibration mechanism 33 arranged between the storage unit and the detection chamber 2, wherein the storage unit can drive the vibration mechanism 33 to drive the dust cleaning unit to vibrate.

[0040] Reference Figure 1-Figure 2The detection unit includes a motor 8 fixedly connected to the detection chamber 2, a plurality of air inlet holes 4 are provided inside the detection chamber 2, an air storage chamber 7 is provided on one side of the detection chamber 2 close to the motor 8, the air storage chamber 7 is communicated with the air inlet holes 4, a detection head 5 is fixedly connected to the inner wall of the air inlet hole 4, the output end of the motor 8 extends into the air storage chamber 7, an impeller 9 is fixedly connected to the output end of the motor 8, and also includes an alarm 6 fixedly connected to the top of the detection chamber 2 and matching the number and position of the air inlet holes 4, a running wheel 3 matching the number and position of the air inlet holes 4 is provided on the shell 1, the alarm 6 and the running wheel 3 are both electrically connected to the detection head 5, the number of the air inlet holes 4 is not limited here, as long as it can detect gases in multiple directions, but it is required They are evenly distributed on the detection chamber 2, with four groups being the best. The specific structures of the impeller 9 and the detection head 5 can refer to the technical solutions in the prior art, and those skilled in the art will know them, so they will not be elaborated on here. The impeller 9 can generate thrust on the gas when it rotates, and the detection head 5 can detect the concentration of toxic, harmful, flammable and explosive gases in the gas and transmit them in the form of electrical signals. The staff can set the concentration threshold to control the operation of the alarm 6 and the walking wheel 3, and can control the operation of the alarm 6 in different directions and the moving direction of the walking wheel 3 according to the detection data of the detection head 5 in different directions. The walking wheel 3 is electrically driven. The above are conventional means in the prior art, so they will not be elaborated on.

[0041] When detecting the gas, the motor 8 is started to drive the impeller 9 to rotate. At this time, the impeller 9 generates a downward thrust on the gas, and the gas flows along the air inlet 4 to the bottom of the air storage chamber 7, so that the air pressure in the air inlet 4 is reduced, so that the external gas enters the air inlet 4, and the gas is detected by the detection head 5. If the gas detected by the detection head 5 in a certain direction is abnormal or the gases detected by multiple detection heads 5 are abnormal, the detection head 5 will first control the alarm 6 in the corresponding direction to start working to warn the staff. In addition, the walking wheel 3 will be controlled to move to the corresponding direction or the side with the highest data value, so that the staff can detect the abnormality in time, so as to carry out maintenance in time and improve the safety of the chemical processing process.

[0042] Reference Figure 2 , Figure 3 and Figure 7The dust-proof cleaning part includes a filter plate 18 arranged on the side of the detection chamber 2 close to the air inlet 4, a mounting groove 17 is provided on the side of the detection chamber 2 close to the air inlet 4, the filter plate 18 is movably connected in the mounting groove 17, an exhaust hole 10 is provided in the detection chamber 2, one end of the exhaust hole 10 is connected to the bottom of the air storage chamber 7, and the other end of the exhaust hole 10 extends to the top of the detection chamber 2, a mounting cavity 11 is provided on the side of the detection chamber 2 close to the exhaust hole 10, a rotating shaft 12 is rotatably connected to the side of the exhaust hole 10 close to the mounting cavity 11, a wind wheel 13 and a first driving bevel gear 14 are fixedly connected to the rotating shaft 12, and a wind wheel 13 and a first driving bevel gear 14 are rotatably connected to the side of the detection chamber 2 close to the mounting cavity 11 The reciprocating screw 15 has one end near the mounting cavity 11 fixedly connected with a first driven bevel gear 16 meshing with the first driving bevel gear 14, and a cleaning member 19 is arranged on the reciprocating screw 15, wherein the filter plate 18 extends to the inside of the air inlet 4, and the exhaust hole 10 is arc-shaped on one side near the air inlet 4, and the cleaning member 19 matches the reciprocating screw 15, and the cleaning member 19 fits the filter plate 18, and the cleaning member 19 is provided with a protrusion matching the reciprocating screw 15 inside, so that when the reciprocating screw 15 rotates, the cleaning member 19 is driven to move back and forth along the reciprocating screw 15, which is a conventional means in the prior art, and therefore will not be elaborated on.

[0043] During operation, as the gas flows, the gas in the gas storage chamber 7 will enter the exhaust hole 10, and the wind wheel 13 will be driven to rotate under the action of the airflow, thereby driving the reciprocating screw 15 to rotate through the first driving bevel gear 14 and the first driven bevel gear 16, and driving the cleaning member 19 to move back and forth along the filter plate 18, so as to clean the dust adsorbed on the filter plate 18, thereby improving the fluidity of the gas, preventing the gas detection from being obstructed, and improving the accuracy of the gas detection. In addition, it can also have a preliminary purification effect on the gas. Finally, the gas is discharged through the end of the exhaust hole 10, and the gas can also be discharged to a farther distance through a connecting pipe to prevent the discharged gas from affecting the subsequent gas detection.

[0044] Reference Figure 2 and Figure 4 The cleaning member 19 includes a movable plate 191 matched with the reciprocating screw rod 15, an outer scraper 192 is fixedly connected to the movable plate 191, two groups of inner scrapers 193 are symmetrically slidably connected inside the outer scraper 192, and multiple groups of first springs 194 are fixedly connected between the two groups of inner scrapers 193, wherein the inner scrapers 193 and the outer scrapers 192 are both fitted with the filter plate 18, a drain trough 20 is provided on one side of the detection chamber 2 close to the air inlet 4, the drain trough 20 is inclined, and one end of the drain trough 20 close to the air inlet 4 is located below the outer scraper 192 and the inner scraper 193, and a collecting box 21 is provided on one side of the detection chamber 2 close to the drain trough 20.

[0045] In addition, a lever 41 is fixedly connected to the filter plate 18, and there is a capsule 40 structure in the middle section of the sewage trough 20, which is recessed toward the filter plate 18. When the filter plate 18 vibrates up and down, the lever 41 will be driven to contact the capsule 40 and push it into the sewage trough 20, thereby forming a volume change in the sewage trough 20. On the one hand, it can help discharge the dirt in the sewage trough 20. On the other hand, the air flow fluctuation in the sewage trough 20 will further vibrate the filter plate 18 for further cleaning, thereby making the subsequent detection accuracy higher.

[0046] When the outer scraper 192 and the inner scraper 193 clean the filter plate 18, under the action of the first spring 194, the inner scraper 193 can always fit tightly against the inner wall of the air inlet 4 during the movement. At the same time, the inner scraper 193 can also limit the movable plate 191 to prevent the movable plate 191 from rotating on the reciprocating screw 15.

[0047] Reference Figure 2 The storage part includes a linkage shaft 22 slidably connected to the output end of the motor 8, a second spring 23 is fixedly connected between the linkage shaft 22 and the output end of the motor 8, and a second driving bevel gear 24 is fixedly connected to one end of the linkage shaft 22 away from the output end of the motor 8. A plurality of groups of slide grooves 25 are provided inside the housing 1, and a slider 26 is slidably connected inside the slide groove 25. A screw rod 27 is rotatably connected to the slider 26, and a second driven bevel gear 28 meshing with the second driving bevel gear 24 is fixedly connected to one end of the screw rod 27 away from the slider 26, wherein the screw rod 27 includes a threaded portion and a smooth portion, and the threaded portions of the two groups of screw rods 27 in the same direction are symmetrically arranged. The storage part It also includes a threaded block 29 arranged on the screw 27. A support rod 30 is rotatably connected between the threaded block 29 and the bottom of the shell 1 and the bottom of the detection chamber 2. The interior of the threaded block 29 is provided with an internal thread that matches the threaded portion of the screw 27. The second driven bevel gear 28 can be two groups or four groups, and is symmetrically arranged to ensure the stability of the equipment operation and the stability of the meshing between the second driving bevel gear 24 and the second driven bevel gear 28. In addition, only relative movement can occur between the linkage shaft 22 and the output end of the motor 8, and no relative rotation will occur. The specific structure can also refer to the output method between the spline shafts. This is a conventional means in the prior art, so it will not be repeated.

[0048] When detecting gas, the output end of the motor 8 will drive the linkage shaft 22 to rotate synchronously, and drive the screw 27 to rotate through the second driving bevel gear 24 and the second driven bevel gear 28, so that the two sets of threaded blocks 29 in the same direction move relatively on the screw 27, driving the support rod 30 to rotate, and supporting the detection chamber 2 to the outside of the shell 1 until the threaded part on the screw 27 is disengaged from the threaded block 29. At this time, the detection chamber 2 will stop moving to facilitate gas detection, and in this process, under the action of the second spring 23, the second driving bevel gear 24 can adapt to the height of the second driven bevel gear 28, that is, to ensure the stability of the meshing between the second driving bevel gear 24 and the second driven bevel gear 28.

[0049] Reference Figure 2 , and also includes a fixing plate 31 fixedly connected to the smooth part of the screw 27, and a third spring 32 is fixedly connected to the side of the fixing plate 31 close to the threaded block 29, wherein the fixing plate 31 is located between the slider 26 and the threaded part of the screw 27, the third spring 32 is sleeved on the screw 27, and the end of the third spring 32 away from the fixing plate 31 is in contact with the threaded block 29, the synchronous rotation between the fixing plate 31 and the screw 27 will not affect the rotation between the third spring 32 and the threaded block 29, and the third spring 32 is always in a compressed state.

[0050] When the detection chamber 2 is extended, the threaded block 29 will move to the side close to the third spring 32 and compress the third spring 32. However, when the screw rod 27 is rotating, the third spring 32 can limit the threaded block 29. When the screw rod 27 stops rotating, the threaded block 29 can be meshed with the threaded portion of the screw rod 27 under the action of the third spring 32. With the action of the gravity of the detection chamber 2 itself, the threaded block 29 can be moved to the initial position and drive the screw rod 27 to rotate in the opposite direction, thereby storing the detection chamber 2 in the shell 1, thereby improving the protection effect of the detection chamber 2 when the equipment is not in use.

[0051] Reference Figure 2 , Figure 5 , Figure 6 and Figure 8The vibration mechanism 33 includes a driving wheel 331 fixedly connected to the screw rod 27, a mounting seat 332 fixedly connected to the bottom of the detection chamber 2, a connecting shaft 333 rotatably connected to the mounting seat 332, a driven wheel 334 rotatably connected to the connecting shaft 333, a limiting groove 335 is provided on the side of the detection chamber 2 close to the mounting seat 332, a limiting block 336 is slidably connected inside the limiting groove 335, a tensioning wheel 338 is rotatably connected to the limiting block 336, and a fourth spring 337 is fixedly connected between the limiting block 336 and the limiting groove 335 A belt 339 is sleeved on the driving wheel 331, the driven wheel 334 and the tensioning wheel 338, and a cam 3310 is fixedly connected to the connecting shaft 333, wherein the driving wheel 331 is located between the threaded portion of the screw 27 and the second driven bevel gear 28, and the cam 3310 is located below the filter plate 18. It should be explained that the driving wheel 331 can also limit the thread block 29 to prevent the thread block 29 from being separated from the threaded portion on the screw 27 when moving to the initial position, thereby ensuring the stability of subsequent equipment use.

[0052] When the screw 27 rotates, it will drive the driving wheel 331 to rotate. Under the action of the driven wheel 334, the tensioning wheel 338 and the belt 339, the connecting shaft 333 can be driven to rotate synchronously, thereby driving the cam 3310 to rotate under the filter plate 18. When the protruding part of the cam 3310 contacts the filter plate 18, it will have an impact effect on the filter plate 18. After the continuous rotation of the cam 3310, the filter plate 18 can be vibrated during the operation, thereby accelerating the shedding of dust and the like on the filter plate 18, and also facilitating the cleaning of dust on the filter plate 18 by the cleaning member 19. During this process, the fourth spring 337 can ensure the tension of the belt 339, so that the driving wheel 331, the driven wheel 334 and the tensioning wheel 338 can rotate stably. Example

[0053] A detection method for a gas detection system for chemical safety, comprising the following steps:

[0054] Step 1: Move the equipment to the designated location in the chemical plant and turn on the detection unit;

[0055] Move the device to the approximate range that needs to be detected. The device can detect gases within a certain range. In addition, since gases diffuse in the air, the detection range of the device is relatively large.

[0056] Step 2: The detection unit will suck gas into the detection chamber 2 and detect the gas through the detection unit;

[0057] After the detection unit is started, the electric impeller 9 rotates, causing the gas in the gas storage chamber 7 to generate a downward thrust, so that the gas in the air inlet 4 enters and exits the gas storage chamber 7, and the flowing gas can be detected through the detection head 5;

[0058] Step 3: When the data of the detection parts in different directions are abnormal, the alarm 6 in the corresponding direction will sound an alarm, and the walking wheel 3 will be driven to move in the corresponding direction;

[0059] Step 4: The inhaled gas will first filter the dust and the like in the gas under the action of the filter plate 18, and then the inhaled gas will drive the dust cleaning part to rotate to clean the filter plate 18;

[0060] The flowing gas generates thrust on the wind wheel 13, driving the wind wheel 13 to rotate, thereby driving the reciprocating screw 15 to rotate through the first driving bevel gear 14 and the first driven bevel gear 16, and cleaning the filter plate 18 through the cleaning member 19;

[0061] Step 5: When detecting the gas, the detection unit drives the storage unit to drive the detection chamber 2 to extend from the housing 1. At the same time, the storage unit drives the vibration mechanism 33 to rotate, knocking the filter plate 18 to accelerate the shedding of dust on the filter plate 18.

[0062] Step 6: After the detection is completed, the detection chamber 2 is driven by its own gravity to drive the storage part to rotate in the opposite direction, so that the detection chamber 2 is stored in the housing 1.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas detection system for chemical safety, comprising a housing (1) and a detection chamber (2), characterized in that: Also includes: A detection unit arranged in the detection chamber (2) and used for detecting gas in the chemical plant; The dust-proof cleaning part arranged in the detection chamber (2) is used to filter dust in the gas during gas detection. Wherein, the detection unit can drive the dust cleaning unit to clean the filtered dust; A storage portion disposed between the housing (1) and the detection chamber (2), the detection portion being capable of driving the storage portion to adjust the relative position between the detection chamber (2) and the housing (1); a vibration mechanism (33) disposed between the storage portion and the detection chamber (2), wherein the storage portion is capable of driving the vibration mechanism (33) to drive the dust-proof cleaning portion to vibrate; The detection unit comprises a motor (8) fixedly connected to the detection chamber (2); a plurality of groups of air inlet holes (4) are provided inside the detection chamber (2); a gas storage cavity (7) is provided on a side of the detection chamber (2) close to the motor (8); the gas storage cavity (7) is connected to the air inlet hole (4); a detection head (5) is fixedly connected to the inner wall of the air inlet hole (4); an output end of the motor (8) extends into the gas storage cavity (7); and an impeller (9) is fixedly connected to the output end of the motor (8); The dust-proof cleaning portion comprises a filter plate (18) arranged on a side of the detection chamber (2) close to the air inlet hole (4); a mounting groove (17) is provided on a side of the detection chamber (2) close to the air inlet hole (4); the filter plate (18) is movably connected in the mounting groove (17); an exhaust hole (10) is provided in the detection chamber (2); one end of the exhaust hole (10) is connected to the bottom of the air storage chamber (7); the other end of the exhaust hole (10) extends to the top of the detection chamber (2); and a gas outlet (10) is provided on a side of the detection chamber (2) close to the exhaust hole (10). A mounting chamber (11) is provided, the exhaust hole (10) is rotatably connected to a rotating shaft (12) on one side close to the mounting chamber (11), a wind wheel (13) and a first driving bevel gear (14) are fixedly connected to the rotating shaft (12), a reciprocating screw rod (15) is rotatably connected to one side of the detection chamber (2) close to the mounting chamber (11), one end of the reciprocating screw rod (15) close to the mounting chamber (11) is fixedly connected to a first driven bevel gear (16) meshing with the first driving bevel gear (14), and a cleaning member (19) is provided on the reciprocating screw rod (15). The filter plate (18) extends to the inside of the air inlet (4), the exhaust hole (10) is arc-shaped on a side close to the air inlet (4), the cleaning member (19) matches the reciprocating screw rod (15), and the cleaning member (19) fits the filter plate (18); The storage portion comprises a linkage shaft (22) slidably connected to the output end of the motor (8), a second spring (23) is fixedly connected between the linkage shaft (22) and the output end of the motor (8), an end of the linkage shaft (22) away from the output end of the motor (8) is fixedly connected to a second driving bevel gear (24), a plurality of groups of slide grooves (25) are provided inside the housing (1), a slider (26) is slidably connected inside the slide grooves (25), a screw rod (27) is rotatably connected to the slider (26), and an end of the screw rod (27) away from the slider (26) is fixedly connected to a second driven bevel gear (28) meshing with the second driving bevel gear (24), The screw (27) comprises a threaded portion and a smooth portion, and the threaded portions of two groups of screws (27) in the same direction are symmetrically arranged; The vibration mechanism (33) comprises a driving wheel (331) fixedly connected to the screw rod (27); a mounting seat (332) is fixedly connected to the bottom of the detection chamber (2); a connecting shaft (333) is rotatably connected to the mounting seat (332); a driven wheel (334) is rotatably connected to the connecting shaft (333); a limiting groove (335) is provided on a side of the detection chamber (2) close to the mounting seat (332); a limiting block (336) is slidably connected inside the limiting groove (335); a tensioning wheel (338) is rotatably connected to the limiting block (336); a fourth spring (337) is fixedly connected between the limiting block (336) and the limiting groove (335); a belt (339) is sleeved on the driving wheel (331), the driven wheel (334) and the tensioning wheel (338); and a cam (3310) is fixedly connected to the connecting shaft (333). The driving wheel (331) is located between the threaded portion of the screw rod (27) and the second driven bevel gear (28), and the cam (3310) is located below the filter plate (18).

2. A chemical safety gas detection system according to claim 1, characterized in that: The cleaning member (19) comprises a movable plate (191) matched with the reciprocating screw rod (15), an outer scraper (192) being fixedly connected to the movable plate (191), two groups of inner scrapers (193) being symmetrically slidably connected inside the outer scraper (192), and a plurality of groups of first springs (194) being fixedly connected between the two groups of inner scrapers (193). The inner scraper (193) and the outer scraper (192) are both fitted with the filter plate (18); a sewage trough (20) is provided on a side of the detection chamber (2) close to the air inlet (4); the sewage trough (20) is inclined, and one end of the sewage trough (20) close to the air inlet (4) is located below the outer scraper (192) and the inner scraper (193); and a collection box (21) is provided on a side of the detection chamber (2) close to the sewage trough (20).

3. A chemical safety gas detection system according to claim 1, characterized in that: The storage portion further comprises a threaded block (29) arranged on the screw rod (27), a support rod (30) being rotatably connected between the threaded block (29) and the bottom of the housing (1) and the bottom of the detection chamber (2), and an internal thread matching the threaded portion of the screw rod (27) is arranged inside the threaded block (29).

4. A chemical safety gas detection system according to claim 3, characterized in that: It also includes a fixing plate (31) fixedly connected to the smooth portion of the screw rod (27), wherein a third spring (32) is fixedly connected to a side of the fixing plate (31) close to the threaded block (29). The fixing plate (31) is located between the slider (26) and the threaded portion of the screw rod (27), the third spring (32) is sleeved on the screw rod (27), and one end of the third spring (32) away from the fixing plate (31) is in contact with the threaded block (29).

5. A chemical safety gas detection system according to claim 1, characterized in that: It also includes an alarm (6) fixedly connected to the top of the detection chamber (2) and matching the number and position of the air inlet holes (4); the housing (1) is provided with running wheels (3) matching the number and position of the air inlet holes (4); and the alarm (6) and the running wheels (3) are both electrically connected to the detection head (5).

6. A detection method comprising the chemical safety gas detection system according to any one of claims 1 to 5, characterized in that: The following steps are also included: Step 1: Move the equipment to the designated location in the chemical plant and turn on the detection unit; Step 2: The detection unit sucks gas into the detection chamber (2) and detects the gas through the detection unit; Step 3: When the data of the detection parts in different directions are abnormal, the alarm (6) in the corresponding direction will sound an alarm, and the walking wheel (3) will be driven to move in the corresponding direction; Step 4: The inhaled gas will first filter the dust in the gas under the action of the filter plate (18), and then the inhaled gas will drive the dust cleaning part to rotate to clean the filter plate (18); Step 5: When detecting the gas, the detection unit drives the storage unit to drive the detection chamber (2) to extend from the housing (1), and at the same time the storage unit drives the vibration mechanism (33) to rotate to knock the filter plate (18), thereby accelerating the shedding of dust on the filter plate (18); Step 6: After the detection is completed, the detection chamber (2) drives the storage part to rotate in the opposite direction under the action of its own gravity, so that the detection chamber (2) is stored in the housing (1).

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