Smoke sample generation and storage device for testing underground smoke sensor of coal mine

Abstract

The invention discloses a smog gas sample generation and storage device for testing an underground coal mine smog sensor, the smog gas sample generation and storage device comprises a storage cylinder, a smog adjusting unit and a smog generation unit, the smog adjusting unit is arranged in the storage cylinder, and the smog adjusting unit is composed of a movable adjusting piston and an adjusting structure; the adjusting piston is arranged in an inner cavity of the storage barrel, the adjusting structure is used for adjusting the position of the adjusting piston, pre-storage and quantitative taking of a smoke sample can be achieved through cooperation of the storage barrel and the adjusting piston, and therefore the underground open fire danger is avoided; meanwhile, the adjusting piston is finely controlled by the control assembly, so that the smoke is stably output at a constant speed, and the accuracy of the calibration concentration is ensured; and the anti-deposition assembly is automatically started when the smoke is output through the linkage driving assembly, so that the smoke particles are effectively prevented from settling at the bottom of the storage cylinder, and the uniformity and stability of the concentration of the gas sample are ensured.

Description

Technical Field

[0001] This application relates to the technical field of underground coal mine smoke monitoring equipment, and in particular to a smoke gas sample generation and storage device for testing underground coal mine smoke sensors. Background Technology

[0002] Coal mines have complex underground environments containing flammable and explosive substances such as gas and coal dust. Fire is one of the most serious safety threats to mines. As a key device in coal mine fire monitoring and early warning systems, the proper functioning of smoke sensors and the sensitivity and reliability of their alarm functions are directly related to the safety of underground workers and mine property.

[0003] Currently, the direct combustion method is commonly used for on-site calibration of smoke sensors in underground coal mines. The specific procedure involves directly igniting a specific smoke-generating material near the sensor's monitoring point with an open flame, guiding the resulting smoke into the sensor's detection chamber, and observing whether the sensor can properly emit audible and visual alarm signals. However, when the above-mentioned traditional on-site calibration methods are used in underground coal mines, the open flame operation itself poses a huge safety hazard, which can easily lead to gas or coal dust explosions. At the same time, the concentration, composition and particulate matter distribution of the smoke generated by on-site combustion cannot be accurately controlled and reproduced. It is greatly affected by the ambient airflow and the degree of combustion, and can only be used for simple functional verification, so the calibration results are unreliable.

[0004] Meanwhile, the smoke produced by traditional methods is used immediately after production and cannot be stored, nor can the consistency of smoke concentration be guaranteed for each test.

[0005] In other words, existing technologies have the following technical problems: ordinary smoke sample generation methods cannot be preserved, making it difficult to guarantee the consistency of smoke concentration in each test. Therefore, a smoke sample generation and storage device for coal mine underground smoke sensor testing is proposed to address the above problems. Summary of the Invention

[0006] This embodiment provides a smoke sample generation and storage device for testing underground smoke sensors in coal mines to solve the problem that ordinary smoke sample generation methods in the prior art cannot be saved and it is difficult to ensure the consistency of smoke concentration in each test.

[0007] According to one aspect of this application, a smoke sample generating and storing device for testing smoke sensors in underground coal mines is provided, comprising a storage cylinder, a smoke regulating unit, and a smoke generating unit. The smoke regulating unit is disposed inside the storage cylinder and consists of a movable regulating piston and an regulating structure. The regulating piston is disposed within the inner cavity of the storage cylinder, and the regulating structure is used to adjust the position of the regulating piston. The outer wall of the storage cylinder is also equipped with a control component, which is connected to the adjustment structure. The control component is used to finely control the adjustment structure. The bottom of the storage cylinder is also provided with an anti-deposition component, and a linkage drive component is provided between the anti-deposition component and the control component. The anti-deposition component includes a rotatable turbine, which rotates rapidly when the control component is in operation.

[0008] Furthermore, a support base is fixedly connected to the bottom of the storage cylinder. The support base is fixedly installed on the upper surface of the support base plate. A walking wheel is installed on the bottom of the support base plate, and a gripping operation frame is fixedly connected to one side of the support base plate.

[0009] Furthermore, a smoke output pipe and a smoke output tube are fixedly connected to the bottom side of the inner cavity of the storage cylinder, and a nozzle is fixedly connected to the upper end of the smoke output pipe. A control valve is installed on both the smoke output pipe and the smoke output tube.

[0010] Furthermore, the smoke generating unit includes a fixed chamber and a conical smoke collection chamber. The fixed chamber is fixedly installed on the upper surface of the storage cylinder. The upper end of the inner cavity of the fixed chamber is fixedly connected to the conical smoke collection chamber. The upper end of the conical smoke collection chamber is fixedly connected to and communicates with one end of the smoke output pipe. A support plate is fixedly connected in the inner cavity of the fixed chamber. Several air holes are opened on the support plate. A side air vent is also opened on the side wall of the fixed chamber.

[0011] Furthermore, the adjustment structure includes a support movable seat and an adjustment screw. One end of a movable guide rod is fixedly connected to the bottom surface of both sides of the support movable seat. The bottom end of the movable guide rod is fixedly connected to the upper surface of the adjustment piston. A support frame is also fixedly connected to the upper surface of the storage cylinder. An adjustment screw is rotatably connected to the middle of the support frame. The adjustment screw passes through the support movable seat and is threadedly engaged with the support movable seat.

[0012] Furthermore, the control assembly includes a control lever, gear B, a control turntable, and gear A. The control lever is disposed on the side wall of the storage cylinder and rotatably connected to the outer wall of the storage cylinder. A control turntable is fixedly connected to one end of the control lever. Gear B is fixedly connected to the arc-shaped wall of the control lever. A second rotating rod is also rotatably connected to the outer wall of the storage cylinder. Gear A is fixedly connected to the arc-shaped wall of the second rotating rod.

[0013] Furthermore, a second synchronous pulley is fixedly connected to one end of the second rotating rod, and a fixed foot is fixedly connected to the side wall of the support frame. A first rotating rod is rotatably connected to the fixed foot, and a first synchronous pulley is fixedly connected to one end of the first rotating rod. A synchronous belt is sleeved between the first synchronous pulley and the second synchronous pulley. A first bevel gear is fixedly connected to the other end of the first rotating rod, and a second bevel gear is fixedly connected to the top of the adjusting screw. The first bevel gear and the second bevel gear mesh with each other.

[0014] Furthermore, the anti-deposition component also includes a rotating round seat, which is rotatably connected to the bottom side of the inner cavity of the storage cylinder. A turbine is fixedly connected to the arc-shaped wall of the rotating round seat, and a rotating shaft is rotatably connected to the bottom surface of the storage cylinder. The rotating shaft and the rotating round seat are driven by a transmission structure.

[0015] Furthermore, the anti-deposition component also includes a first rotating wheel and a second rotating wheel. The first rotating wheel is fixedly mounted at the bottom end of the rotating shaft, and a transmission belt is sleeved between the first rotating wheel and the second rotating wheel. The diameter of the second rotating wheel is larger than the diameter of the first rotating wheel.

[0016] Furthermore, the linkage drive assembly includes a fixed bracket, a transmission rod, a bevel gear A, and a bevel gear B. The fixed bracket is fixedly installed on the outer wall of the storage cylinder. The transmission rod is rotatably connected to the fixed bracket. The bottom end of the transmission rod is fixedly connected to the second rotating wheel. The upper end of the transmission rod is fixedly connected to the bevel gear A. The bevel gear B is fixedly installed at the arc of the control rod. The bevel gear B and the bevel gear A mesh with each other.

[0017] In order to solve the technical problems of poor safety, easy settling of smoke, and cumbersome operation of ordinary smoke generating equipment in underground field calibration, this application designs a smoke sample generating and storing device. Through the cooperation of the storage cylinder and the regulating piston, the pre-storage and quantitative use of smoke samples can be realized, thereby avoiding the danger of open flames underground. At the same time, through the precise control of the regulating piston by the control component, the uniform and stable output of smoke is realized, ensuring the accuracy of the calibration concentration. Furthermore, through the linkage drive component, the anti-settling component is automatically activated when the smoke is output, which effectively prevents the smoke particles from settling at the bottom of the storage cylinder, ensuring the uniformity and stability of the gas sample concentration. It is particularly suitable for use in the complex environment of underground coal mines. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a side perspective view of one embodiment of the present application; Figure 3 This is a front view structural diagram of one embodiment of this application; Figure 4 This is a schematic diagram of the internal three-dimensional structure of a storage cylinder according to an embodiment of this application; Figure 5 This is a schematic diagram of the internal planar structure of a storage cylinder according to an embodiment of this application; Figure 6 This is a schematic diagram of the connection structure of a control component according to an embodiment of this application; Figure 7 This is a planar connection diagram of a control component according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an anti-deposition component according to an embodiment of this application; Figure 9 This is a schematic diagram of the connection structure of an anti-deposition component according to an embodiment of this application; Figure 10 This is a schematic diagram of the structure of a smoke generating unit according to an embodiment of this application.

[0020] In the diagram: 1. Storage cylinder; 101. Support base; 102. Smoke output pipe; 103. Nozzle; 2. Smoke adjustment unit; 201. Support frame; 202. Support movable seat; 203. Moving guide rod; 204. Adjusting piston; 205. Adjusting screw; 3. Control assembly; 301. Fixed bracket; 302. First rotating rod; 303. First bevel gear; 304. Second bevel gear; 305. First synchronous pulley; 306. Second rotating rod; 307. Second synchronous pulley; 308. Synchronous belt; 309. Gear A; 310. Control rod; 311. Gear B; 31 2. Control turntable; 4. Anti-deposition assembly; 401. Rotating base; 402. Turbine; 403. Permanent disk; 404. Rotating shaft; 405. Conductor disk; 406. First rotating wheel; 407. Second rotating wheel; 408. Transmission belt; 5. Linkage drive assembly; 501. Fixed bracket; 502. Transmission rod; 503. Bevel gear A; 504. Bevel gear B; 6. Smoke generating unit; 601. Fixed chamber; 602. Support plate; 603. Air vent; 604. Side air vent; 605. Conical smoke collection chamber; 7. Support base plate; 8. Traveling wheels; 9. Handling operating frame. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] Please see Figure 1 and Figure 2 As shown, a smoke sample generating and storing device for testing smoke sensors in underground coal mines includes a storage cylinder 1, a smoke regulating unit 2, and a smoke generating unit 6. The smoke regulating unit 2 is housed inside the storage cylinder 1. The smoke regulating unit 2 consists of a movable regulating piston 204 and an adjusting structure. The regulating piston 204 is disposed within the inner cavity of the storage cylinder 1, and the adjusting structure is used to adjust the position of the regulating piston 204. The outer wall of the storage cylinder 1 is also equipped with a control component 3, which is connected to the adjustment structure. The control component 3 is used to finely control the adjustment structure. The bottom of the storage cylinder 1 is also provided with an anti-deposition component 4. A linkage drive component 5 is provided between the anti-deposition component 4 and the control component 3. The anti-deposition component 4 includes a rotatable turbine 402. When the control component 3 is in operation, the turbine 402 rotates rapidly.

[0023] To address the technical problems of existing smoke generators during underground field calibration, such as poor safety, easy smoke settling, and cumbersome operation, this application designs an integrated smoke sample generation and storage device. Through the cooperation of the storage cylinder and the regulating piston, pre-storage and quantitative retrieval of smoke samples can be achieved, thus avoiding the danger of open flames underground. Simultaneously, through precise control of the regulating piston by the control component, uniform and stable smoke output is achieved, ensuring the accuracy of the calibration concentration. Furthermore, the linkage drive component automatically activates the anti-settling component when outputting smoke, effectively preventing smoke particles from settling at the bottom of the storage cylinder, ensuring the uniformity and stability of the gas sample concentration. This enables safe and accurate on-site calibration of underground smoke sensors, making it particularly suitable for use in the complex environment of coal mines.

[0024] For specific technical solutions, please refer to Figure 3 and Figure 4 As shown, a support base 101 is fixedly connected to the bottom of the storage cylinder 1. The support base 101 is fixedly installed on the upper surface of the support base plate 7. Wheels 8 are installed on the bottom of the support base plate 7, and a gripping operating frame 9 is fixedly connected to one side of the support base plate 7. Through this technical solution, the support base plate 7 and the wheels 8 constitute a mobile platform, making the entire device easy to move flexibly between the surface preparation workshop and the underground testing point, improving the portability and convenience of on-site use. The gripping operating frame 9 can further facilitate the movement of operators, making it convenient for use in underground tunnels.

[0025] As a further technical solution, see Figure 4 As shown, a smoke output pipe 104 and a smoke output pipe 102 are fixedly connected to the bottom of the inner cavity of the storage cylinder 1. A nozzle 103 is fixedly connected to the upper end of the smoke output pipe 102. Control valves are installed on both the smoke output pipe 104 and the smoke output pipe 102. Through this technical solution, the smoke input pipe 104 is used to guide the generated smoke into the storage cylinder 1, while the smoke output pipe 102 and its end nozzle 103 are used to directionally and centrally release the stored smoke sample to the sensor under test. The two sets of valves, controlled separately, achieve independent control of the filling and releasing processes, avoiding gas path crosstalk and ensuring operational safety.

[0026] For specific technical solutions, please refer to Figure 1 , Figure 2 and Figure 10As shown, the smoke generating unit 6 includes a fixed chamber 601 and a conical smoke collecting chamber 605. The fixed chamber 601 is fixedly installed on the upper surface of the storage cylinder 1. The conical smoke collecting chamber 605 is fixedly connected to the upper end of the inner cavity of the fixed chamber 601. The upper end of the conical smoke collecting chamber 605 is fixedly connected to and communicates with one end of the smoke output pipe 104. A support plate 602 is fixedly connected to the inner cavity of the fixed chamber 601. Several air holes 603 are opened on the support plate 602. A side air vent 604 is also opened on the side wall of the fixed chamber 601. With this technical solution, when smoke needs to be generated, a standard cigarette stick can be placed on the support plate 602 and ignited. The conical smoke collecting chamber 605 can effectively collect the smoke generated by combustion. The side air vent 604 and the air holes 603 ensure the supply of oxygen required for combustion. At the same time, after the smoke is initially mixed with the air, it is smoothly drawn into the smoke input pipe 104 and enters the storage cylinder 1 for temporary storage. The above design allows smoke to be generated and stored before entering the coal mine, avoiding the danger of using open flames underground.

[0027] For a preferred technical solution, please refer to Figure 4 and Figure 5 As shown, the adjustment structure includes a supporting movable seat 202 and an adjusting screw 205. One end of a moving guide rod 203 is fixedly connected to the bottom surface of both sides of the supporting movable seat 202. Both moving guide rods 203 penetrate the upper wall of the inner cavity of the storage cylinder 1 and extend into the inner cavity of the storage cylinder 1. The bottom end of each moving guide rod 203 is fixedly connected to the upper surface of the adjusting piston 204. A support frame 201 is also fixedly connected to the upper surface of the storage cylinder 1. The adjusting screw 205 is rotatably connected to the middle of the support frame 201. The adjusting screw 205 penetrates the supporting movable seat 202 and is threadedly engaged with it. Through this technical solution, by rotating the adjusting screw 205, the rotational motion is converted into linear motion of the supporting movable seat 202 via threaded transmission, which in turn drives the adjusting piston 204 to move up and down within the storage cylinder 1 via the moving guide rods 203. The double moving guide rod 203 structure improves the stability of the piston movement and prevents deflection. The aforementioned mechanism forms the mechanical basis for achieving uniform piston propulsion, thereby ensuring a constant flow of smoke output.

[0028] As a preferred technical solution, please refer to Figure 6 and Figure 7 As shown, the control component 3 includes a control lever 310, a gear B311, a control turntable 312, and a gear A309. The control lever 310 is disposed on the side wall of the storage cylinder 1 and is rotatably connected to the outer wall of the storage cylinder 1. The control turntable 312 is fixedly connected to one end of the control lever 310. The gear B311 is fixedly connected to the arc-shaped wall of the control lever 310. A second rotating rod 306 is also rotatably connected to the outer wall of the storage cylinder 1. The gear A309 is fixedly connected to the arc-shaped wall of the second rotating rod 306.

[0029] Preferably, the diameter of gear B311 is smaller than the diameter of gear A309. With this technical solution, the operator rotates the control turntable 312, causing the control lever 310 and gear B311 to rotate. The meshing of gear B311 and gear A309 forms the first-stage reduction and torque-increasing structure. The smaller gear drives the larger gear, reducing the output speed and increasing the output torque, making subsequent control of the piston movement more effortless and precise.

[0030] As a further technical solution, a second synchronous pulley 307 is fixedly connected to one end of the second rotating rod 306. A fixed bracket 301 is also fixedly connected to the side wall of the support frame 201. A first rotating rod 302 is rotatably connected to the fixed bracket 301. A first synchronous pulley 305 is fixedly connected to one end of the first rotating rod 302. A synchronous belt 308 is sleeved between the first synchronous pulley 305 and the second synchronous pulley 307. A first bevel gear 303 is fixedly connected to the other end of the first rotating rod 302. A second bevel gear 304 is fixedly connected to the top of the regulating screw 205. The first bevel gear 303 and the second bevel gear 304 mesh with each other. Through this technical solution, power is transmitted to the first rotating rod 302 via the synchronous belt 308 mechanism after gear transmission. The synchronous belt transmission ensures the accuracy and stability of long-distance power transmission. Finally, through the meshing of the first bevel gear 303 and the second bevel gear 304, the direction of power is changed from horizontal rotation to vertical rotation, thereby driving the regulating screw 205 to rotate. Through the above technical solution, multi-stage deceleration is achieved, ultimately converting the rapid rotation of the handwheel into the slow and precise rotation of the screw.

[0031] Preferably, the diameter of the first bevel gear 303 is smaller than the diameter of the second bevel gear 304, thereby forming a second-stage speed reduction and torque amplification mechanism, which further optimizes the operating force and control accuracy.

[0032] For specific technical solutions, please refer to Figure 4 , Figure 8 and Figure 9 As shown, the anti-deposition component 4 also includes a rotating seat 401. The rotating seat 401 is rotatably connected to the bottom side of the inner cavity of the storage cylinder 1. A turbine 402 is fixedly connected to the arc-shaped wall of the rotating seat 401. A rotating shaft 404 is rotatably connected to the bottom surface of the storage cylinder 1. The rotating shaft 404 and the rotating seat 401 are driven by a transmission structure.

[0033] Preferably, the transmission structure is a magnetic coupler, which consists of a permanent disk 403 and a conductor disk 405. The conductor disk 405 is fixedly disposed at the arc-shaped wall of the rotating shaft 404, and the permanent disk 403 is fixedly disposed at the bottom of the rotating seat 401. The permanent disk 403 and the conductor disk 405 are magnetically coupled. Through this technical solution, the magnetic coupler realizes non-contact power transmission. There is no dynamic seal that physically penetrates the wall of the storage cylinder 1 between the permanent disk 403 and the conductor disk 405, thereby solving the sealing problem at the rotating shaft, ensuring the overall high sealing performance of the storage cylinder 1, and preventing smoke leakage.

[0034] As a further technical solution, the anti-deposition component 4 also includes a first rotating wheel 406 and a second rotating wheel 407. The first rotating wheel 406 is fixedly mounted at the bottom end of the rotating shaft 404. A transmission belt 408 is sleeved between the first rotating wheel 406 and the second rotating wheel 407. The diameter of the second rotating wheel 407 is larger than the diameter of the first rotating wheel 406. Through this technical solution, the belt drive and the cooperation of the large and small wheels constitute a third-stage speed-increasing transmission. The relatively low-speed rotation from the linkage drive component 5 is converted into high-speed rotation of the rotating shaft 404, which in turn drives the turbine 402 to rotate rapidly through the magnetic coupler. The rapidly rotating turbine 402 can generate strong stirring and disturbance on the smoke sample at the bottom of the storage cylinder 1, effectively breaking the settling tendency of the smoke particles and keeping them in a uniform suspension state.

[0035] For specific technical solutions, please refer to Figure 6 and Figure 7 As shown, the linkage drive assembly 5 includes a fixed bracket 501, a transmission rod 502, a bevel gear A 503, and a bevel gear B 504. The fixed bracket 501 is fixedly installed on the outer wall of the storage cylinder 1. The transmission rod 502 is rotatably connected to the fixed bracket 501. The bottom end of the transmission rod 502 is fixedly connected to the second rotating wheel 407. The upper end of the transmission rod 502 is fixedly connected to the bevel gear A 503. The bevel gear B 504 is fixedly installed at the arc of the control rod 310. The bevel gear B 504 and the bevel gear A 503 mesh with each other. Through this technical solution, when the operator rotates the control turntable 312 to push the piston to release smoke, the rotation of the control rod 310 will drive the transmission rod 502 to rotate through the meshing of the bevel gear B 504 and the bevel gear A 503, thereby transmitting power to the anti-deposition assembly 4. Through the above technical solution, the anti-deposition function and the smoke release function are linked, with an automatic synchronized start and stop function: as soon as smoke is released, the turbine 402 starts stirring to ensure that the output gas sample is uniform; when operation stops, stirring also stops. This linkage avoids additional operations, improves detection efficiency, and ensures the consistency of smoke concentration during calibration.

[0036] Before using this application, the device should be placed in a safe area with good ventilation on the ground, and the status of each pipe valve should be checked: close the valve on the smoke output pipe 102 and open the valve on the smoke input pipe 104.

[0037] Rotate the control turntable 312 to lower the adjusting piston 204 to the bottom of the storage cylinder 1, reserving maximum space for filling with smoke.

[0038] The cigarette stick is placed on the support plate 602 of the smoke generating unit 6 and lit. After the smoke gathers in the conical smoke collection chamber 605, the control turntable 312 is rotated and the adjusting piston 204 moves upward to generate negative pressure. The smoke is then drawn into the inner cavity of the storage cylinder 1. When the storage cylinder 1 is filled with a predetermined amount of smoke, the cigarette stick is extinguished.

[0039] Close the valve on the smoke inlet pipe 104 to completely seal the prepared standard smoke sample inside the storage cylinder 1. At this point, the device is ready to be transported downhole. During this process, all valves are closed, and the position of the adjusting piston 204 is fixed. Because the storage cylinder 1 is well-sealed, the smoke sample can be safely stored until use.

[0040] When entering the well for testing, align or connect the nozzle 103 at the end of the smoke output pipe 102 to the detection inlet of the smoke sensor to be tested.

[0041] Slowly open the valve on the smoke output pipe 102, and the operator rotates the control turntable 312 at a constant speed. At this moment, a series of linked actions occur automatically: The rotational power is transmitted through the gear set 309, 311 and the synchronous belt mechanism 308 of the control component 3, and then after the bevel gear set 303, 304 reverses direction, it drives the regulating screw 205 to rotate. The screw drives the support moving seat 202 and the regulating piston 204 to move downward at a uniform speed, so as to push out the smoke in the storage cylinder 1 at a uniform speed and stably.

[0042] Meanwhile, under the action of the linkage drive component 5, the rotation of the control lever 310 drives the transmission rod 502 to rotate through the bevel gears A503 and B504. After the power is increased by the pulleys 406 and 407, it drives the turbine 402 of the anti-deposition component 4 to rotate at high speed through the magnetic couplers 403 and 405. The turbine generates a strong stirring effect on the smoke at the bottom of the storage cylinder, ensuring that the smoke concentration is always uniform during the release process and preventing the output concentration from being inconsistent due to the sedimentation of particulate matter.

[0043] The operator observes the response of the smoke sensor and records the calibration results. Once the required gas release amount or time for calibration is reached, the operator stops rotating the control turntable 312, and the turbine 402 stops rotating. Then, the valve on the smoke output pipe 102 is closed, and the nozzle 103 is removed from the sensor. The calibration operation is now complete.

[0044] The device returns to the ground. If it needs to be used again, the first stage operation can be repeated for refilling. If there is residual smoke in the storage cylinder, it can be emptied by the release operation before a new round of refilling.

[0045] The advantages of this application are: the dangerous smoke generation process is completed on the surface, while the downhole operation is only a simple mechanical operation with extremely low safety risks. At the same time, it ensures the uniform movement of the piston, and the turbine stirring that automatically starts and stops during release ensures the stability of the output smoke flow and concentration, thereby achieving accurate calibration.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A smoke sample generating and storage device for testing smoke sensors in underground coal mines, characterized in that: The system includes a storage cylinder (1), a smoke regulating unit (2), and a smoke generating unit (6). The storage cylinder (1) contains the smoke regulating unit (2), which consists of a movable regulating piston (204) and an adjusting structure. The regulating piston (204) is located inside the storage cylinder (1), and the adjusting structure is used to adjust the position of the regulating piston (204). The outer wall of the storage cylinder (1) is also equipped with a control component (3), which is connected to the adjustment structure. The control component (3) is used to finely control the adjustment structure. The bottom of the storage cylinder (1) is also provided with an anti-deposition component (4), and a linkage drive component (5) is provided between the anti-deposition component (4) and the control component (3). The anti-deposition component (4) includes a rotatable turbine (402), which causes the turbine (402) to rotate rapidly when the control component (3) is in operation.

2. The smoke gas sample generating and storing device for testing underground smoke sensors in coal mines according to claim 1, characterized in that: The storage cylinder (1) is also fixedly connected to a support base (101). The support base (101) is fixedly installed on the upper surface of the support base plate (7). The support base plate (7) is equipped with a walking wheel (8) at the bottom. A gripping operation frame (9) is fixedly connected to one side of the support base plate (7).

3. The smoke gas sample generating and storage device for testing underground smoke sensors in coal mines according to claim 1, characterized in that: The storage cylinder (1) has a smoke output pipe (104) and a smoke output pipe (102) fixedly connected to the bottom of its inner cavity. A nozzle (103) is fixedly connected to the upper end of the smoke output pipe (102). Control valves are installed on both the smoke output pipe (104) and the smoke output pipe (102).

4. The smoke gas sample generating and storing device for testing underground smoke sensors in coal mines according to claim 3, characterized in that: The smoke generating unit (6) includes a fixed chamber (601) and a conical smoke collection chamber (605). The fixed chamber (601) is fixedly installed on the upper surface of the storage cylinder (1). The upper end of the inner cavity of the fixed chamber (601) is fixedly connected to the conical smoke collection chamber (605). The upper end of the conical smoke collection chamber (605) is fixedly connected to and communicates with one end of the smoke output pipe (104). A support plate (602) is fixedly connected in the inner cavity of the fixed chamber (601). Several air holes (603) are opened on the support plate (602). A side air vent (604) is also opened on the side wall of the fixed chamber (601).

5. The smoke sample generating and storing device for testing underground smoke sensors in coal mines according to claim 4, characterized in that: The adjustment structure includes a support movable seat (202) and an adjustment screw (205). One end of a movable guide rod (203) is fixedly connected to the bottom surface of both sides of the support movable seat (202). The bottom end of the movable guide rod (203) is fixedly connected to the upper surface of the adjustment piston (204). A support frame (201) is also fixedly connected to the upper surface of the storage cylinder (1). The adjustment screw (205) is rotatably connected to the middle of the support frame (201). The adjustment screw (205) passes through the support movable seat (202) and is threadedly engaged with the support movable seat (202).

6. The smoke sample generating and storing device for testing underground smoke sensors in coal mines according to claim 5, characterized in that: The control component (3) includes a control lever (310), gear B (311), control turntable (312), and gear A (309). The control lever (310) is located on the side wall of the storage cylinder (1) and is rotatably connected to the outer wall of the storage cylinder (1). The control turntable (312) is fixedly connected to one end of the control lever (310). Gear B (311) is fixedly connected to the arc-shaped wall of the control lever (310). A second rotating rod (306) is also rotatably connected to the outer wall of the storage cylinder (1). Gear A (309) is fixedly connected to the arc-shaped wall of the second rotating rod (306).

7. The smoke gas sample generating and storage device for testing underground smoke sensors in coal mines according to claim 6, characterized in that: One end of the second rotating rod (306) is fixedly connected to a second synchronous pulley (307). A fixed bracket (301) is also fixedly connected to the side wall of the support frame (201). A first rotating rod (302) is rotatably connected to the fixed bracket (301). One end of the first rotating rod (302) is fixedly connected to a first synchronous pulley (305). A synchronous belt (308) is sleeved between the first synchronous pulley (305) and the second synchronous pulley (307). The other end of the first rotating rod (302) is fixedly connected to a first bevel gear (303). The top end of the adjusting screw (205) is fixedly connected to a second bevel gear (304). The first bevel gear (303) and the second bevel gear (304) mesh with each other.

8. The smoke gas sample generating and storing device for testing underground smoke sensors in coal mines according to claim 1, characterized in that: The anti-deposition component (4) also includes a rotating seat (401). The rotating seat (401) is rotatably connected to the bottom side of the inner cavity of the storage cylinder (1). A turbine (402) is fixedly connected to the arc-shaped wall of the rotating seat (401). A rotating shaft (404) is rotatably connected to the bottom surface of the storage cylinder (1). The rotating shaft (404) and the rotating seat (401) are driven by a transmission structure.

9. The smoke gas sample generating and storage device for testing underground smoke sensors in coal mines according to claim 8, characterized in that: The anti-deposition component (4) further includes a first rotating wheel (406) and a second rotating wheel (407). The first rotating wheel (406) is fixedly disposed at the bottom end of the rotating shaft (404). A transmission belt (408) is sleeved between the first rotating wheel (406) and the second rotating wheel (407). The diameter of the second rotating wheel (407) is larger than the diameter of the first rotating wheel (406).

10. The smoke gas sample generating and storing device for testing underground smoke sensors in coal mines according to claim 9, characterized in that: The linkage drive assembly (5) includes a fixed bracket (501), a transmission rod (502), a bevel gear A (503), and a bevel gear B (504). The fixed bracket (501) is fixedly installed on the outer wall of the storage cylinder (1). The transmission rod (502) is rotatably connected to the fixed bracket (501). The bottom end of the transmission rod (502) is fixedly connected to the second rotating wheel (407). The upper end of the transmission rod (502) is fixedly connected to the bevel gear A (503). The bevel gear B (504) is fixedly installed at the arc of the control rod (310). The bevel gear B (504) meshes with the bevel gear A (503).

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