Mine intrinsically safe monitoring device

Abstract

The invention relates to a mining intrinsically safe monitoring device, comprising a monitoring substation provided with a plurality of guide posts, a water storage barrel with a floating plate arranged therein, a barrel cover provided on the top opening of the water storage barrel, a water inlet provided along one side of the top surface of the barrel cover; a Z-shaped bracket 1 and a Z-shaped bracket 2 are fixedly arranged on the top surface of the barrel cover at intervals, a pressure sensor 1 electrically connected to the guide post is arranged on the top surface of the Z-shaped bracket 1 in the positive direction, the pressure sensor 1 is used to detect the deformation pressure fed back by a pressure contact component arranged on the top surface of the floating plate and slidably connected with the barrel cover; a pressure sensor 2 electrically connected to the guide post is arranged on the top surface of the Z-shaped bracket 2 in the reverse direction, the pressure sensor 2 is used to detect the deformation pressure fed back by the top contact component elastically connected with the barrel cover; a solenoid valve electrically connected to the guide post is externally connected to the water outlet at the bottom of the water storage barrel, and a spray component used to spray water to cool down a belt conveyor is connected to the bottom of the solenoid valve; the invention not only ensures that the belt conveyor is cooled down in time during operation, but also saves water resources and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of mine safety devices, and in particular relates to an intrinsically safe monitoring device for mines. Background Art

[0002] The intrinsically safe safety monitoring substation for mines is a key component of underground equipment in the coal mine production safety monitoring system. The monitoring substation is used in conjunction with a flameproof and intrinsically safe power supply, which can provide intrinsically safe power supply for various intrinsically safe sensors, collect sensor signals in real time, and execute control operations according to set parameters after processing. The monitoring substation can not only communicate with the ground central station computer and transmit the collected values ​​to the ground central station, but also execute various remote control commands issued by the central station, and it also has an intelligent communication port that can connect to various intelligent devices.

[0003] Belt conveyors are important equipment with the widest range of use in coal mines. When in use, friction between their rollers and conveyor belts generates heat. Once this temperature exceeds the warning range, it is very likely to ignite the coal dust on the rollers, which in turn ignites the conveyor belt and causes a fire, with disastrous consequences. In response to such safety accidents, during the existing belt conveyor transportation operation in coal mines, an infrared temperature sensor electrically connected to a monitoring substation is generally installed under the conveyor belt to monitor the excessive temperature of the conveyor belt in the coal mine caused by long-term friction of the rollers. If the conveyor belt exceeds the preset warning temperature, the monitoring substation will immediately control the belt conveyor to stop. At the same time, water is sprayed to cool it down through the sprinkler head installed on the top wall of the mine. However, this method cools down the conveyor belt only after it is overheated, which is not very safe in itself, and the belt conveyor stoppage will affect production efficiency. Moreover, the sprinkler head is generally connected to municipal water, which will waste precious water resources.

[0004] However, during mine construction and production, both surface water and groundwater may flow into the mine through various channels. In order to ensure the normal production of the coal mine, the various water flows entering the mine must be concentrated and flow along the ditches in the tunnels into the bottom water tank located below the level of the bottom parking lot. The collected water in the bottom water tank is discharged to the ground through the water pump in the central pump room. If the collected water stored in these bottom water tanks is used for cooling water in the process of belt conveyor transportation, there is no need to access municipal water from the ground, which can save precious water resources and reduce the cost of discharging the collected water from the ground.

[0005] Therefore, it is necessary to design a mine intrinsically safe monitoring device that can use the collected water in the bottom water tank to perform safer intermittent water sprinkling and cooling during the operation of the belt conveyor under the control of the monitoring substation, so as to ensure the long-term safe operation of the underground belt conveyor in the coal mine. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a mine intrinsically safe monitoring device, and the specific technical solution is as follows:

[0007] The present invention provides a mining intrinsically safe monitoring device, comprising a monitoring substation provided with a plurality of guide columns, and the device also comprises a water storage barrel with a floating plate arranged therein, the top cover of the water storage barrel is provided with a barrel cover adapted thereto, a water inlet is provided along one side of the top surface of the barrel cover, and the water inlet is externally connected to a water delivery pump pipe for pumping water collected in a water tank at the bottom of a well;

[0008] The top surface of the barrel cover is radially and spacedly fixed with a Z-shaped bracket 1 and a Z-shaped bracket 2 along both sides of the center thereof. A pressure sensor 1 electrically connected to the corresponding guide column is arranged on the top surface of the Z-shaped bracket 1 in the positive direction. The pressure sensor 1 is used to detect the deformation pressure fed back by the pressure contact component arranged on the top surface of the floating plate and slidably connected with the barrel cover; a pressure sensor 2 electrically connected to the corresponding guide column is arranged on the top surface of the Z-shaped bracket 2 in the reverse direction. The pressure sensor 2 is used to detect the deformation pressure fed back by the top contact component elastically connected with the barrel cover; a water outlet is arranged in the middle of the bottom of the water storage barrel, and the water outlet is externally connected to an electromagnetic valve electrically connected to the corresponding guide column. The bottom of the electromagnetic valve is connected to an L-shaped water pipe, and the port of the L-shaped water pipe is connected to a spray component, and the spray component is used to spray water to cool the belt conveyor arranged directly below it;

[0009] The water storage barrel is divided into a shallow water state and a deep water state. When in the shallow water state, the floating plate drives the pressure contact component to press down pressure sensor 1. After the monitoring substation receives the pressure signal fed back by pressure sensor 1, it controls the solenoid valve to close, and communicates with the ground monitoring center to open the water pump pipe; when in the deep water state, the floating plate contacts the top contact component and drives it to push up pressure sensor 2. After the monitoring substation receives the pressure signal fed back by pressure sensor 2, it controls the solenoid valve to open, and communicates with the ground monitoring center to close the water pump pipe.

[0010] As a preferred technical solution of the present invention, the port of the L-shaped water pipe is vertically connected to a straight water pipe, the bottom surface of the straight water pipe is vertically connected to a plurality of water distribution pipes at axially equal intervals, and the bottom of the water distribution pipe is connected to a spray assembly, which can spray water from the inside to the outside to cool the belt conveyor as the water pressure in the water storage barrel decreases.

[0011] As a preferred technical solution of the present invention, the spray assembly includes a spray pipe, the top opening of the spray pipe is axially connected and docked with the bottom opening of the corresponding water distribution pipe, and the bottom opening is closed; a pressure-bearing airbag is tightly attached to the middle of the inner bottom surface of the spray pipe, and a telescopic airbag is fixed to the middle of the outer bottom surface, and the top surface of the telescopic airbag is connected to the bottom surface of the pressure-bearing airbag through a matching air guide pipe; a plurality of through holes are opened at equal intervals in the circumferential direction on the top of the spray pipe, and a 90° elbow pipe is inserted and matched in the through hole, and a water diversion groove is arranged obliquely downward just below the bottom opening of each elbow pipe, the upper end of the water diversion groove is hinged to the outer wall of the spray pipe, and an oblique support rod is hinged between the lower bottom wall and the bottom edge of the telescopic airbag;

[0012] The water storage barrel is in a deep water state, the solenoid valve is opened, and the pressure-bearing airbag is subjected to water pressure so that part of its gas enters the telescopic airbag, thereby forcing the telescopic airbag to extend axially and simultaneously driving multiple water diversion grooves to shrink inward, and the shrinkage amplitude is proportional to the water pressure on the pressure-bearing airbag.

[0013] As a preferred technical solution of the present invention, the spray pipe is threadedly connected to the bottom of the corresponding water distribution pipe through a threaded pipe integrally connected to the top of the spray pipe, and the outer diameter of the threaded pipe is smaller than the outer diameter of the spray pipe.

[0014] As a preferred technical solution of the present invention, the bottom of the spray pipe is screwed together with a threaded cover, a cylindrical pressure-bearing air bag is fixedly attached to the middle of the inner bottom surface of the threaded cover, the outer wall of the pressure-bearing air bag is gap-fitted with the inner wall of the spray pipe, and a circular pad is fixedly attached to the top surface thereof in sliding cooperation with the inner wall of the spray pipe.

[0015] As a preferred technical solution of the present invention, the telescopic airbag is a corrugated structure with a central perforation therein, which is gap-connected with a guide rod vertically connected to the middle part of the outer bottom surface of the threaded cover through the central perforation; the top surface of the telescopic airbag is fixedly attached to the outer bottom surface of the threaded cover, and an air guide tube is arranged on the top surface radially and vertically symmetrically around the central perforation, and the two air guide tubes respectively pass through the airway holes opened on the bottom surface of the threaded cover and are connected to the bottom surface of the pressure-bearing airbag; a circular plate is fixedly attached to the bottom surface of the telescopic airbag, which is slidably connected to the guide rod, and the outer diameter of the circular plate is larger than the outer diameter of the telescopic airbag, and the lower end of the diagonal support rod is hinged to the outer edge of the circular plate.

[0016] As a preferred technical solution of the present invention, the pressure touch assembly includes a guide support rod vertically connected to the top surface of the floating plate, the guide support rod gap passes through the barrel cover and the Z-shaped bracket, and its top end is vertically connected to a touch plate for following the downward pressure pressure sensor.

[0017] As a preferred technical solution of the present invention, the top contact assembly includes a top support rod connected with the vertical gap of the barrel cover, a reset spring is axially sleeved on the upper part of the top support rod, the bottom end of the reset spring is connected to the top surface of the barrel cover, and the top end is connected to the bottom surface of the touch top plate vertically connected to the top end of the top support rod; when the reset spring is in a natural state, the touch top plate and the pressure sensor are close to each other.

[0018] As a preferred technical solution of the present invention, the bottom of the water storage barrel is an arc-shaped structure, and its inner barrel wall is longitudinally integrated with a water guide groove of the same size, and the water guide groove is located directly below the water inlet of the barrel cover, and the water outlet end of the water pump pipe is inserted into the water guide groove from the water inlet; the floating plate is a circular structure, and its outer diameter is the same as the inner diameter of the water storage barrel, and a bayonet is opened on one side, and the bayonet is slidably engaged with the water guide groove; a hemispherical float is attached to the middle of the bottom surface of the floating plate.

[0019] As a preferred technical solution of the present invention, the belt conveyor includes a frame, rollers and a conveyor belt. A suspension frame with an inverted T-shaped structure is installed on the top surface of the frame along its short side direction. An infrared temperature sensor for monitoring the temperature of the conveyor belt is installed on the vertical part of the suspension frame, and the infrared temperature sensor is electrically connected to the guide column of the corresponding monitoring substation; the monitoring substation controls the belt conveyor to stop after receiving the over-temperature warning signal feedback from the infrared temperature sensor.

[0020] The beneficial effects of the present invention are:

[0021] In the present invention, when the water storage bucket is in a shallow water state, the floating plate moves downward as the water level drops, and then applies pressure to the pressure sensor 1 through the pressure contact component; after receiving the pressure signal, the monitoring substation controls the solenoid valve to close, stops spraying water for cooling, and simultaneously communicates with the ground monitoring center to open the water delivery pump pipe to pump more collected water from the water tank at the bottom of the well into the water storage bucket;

[0022] When the water level in the water storage tank rises to the deep water state, the floating plate moves up and contacts the top contact component, exerting pressure on the pressure sensor 2; after receiving this pressure signal, the monitoring substation will control the solenoid valve to open, start spraying water to cool the belt conveyor through the spray component, and at the same time communicate with the ground monitoring center to close the water pump pipe and stop pumping water into the water storage tank;

[0023] This intelligent intermittent watering and cooling method not only ensures that the belt conveyor is cooled down in time during operation and ensures its safe operation, but also saves water resources and reduces the cost of connecting municipal water to the mine by utilizing the collected water in the water tank at the bottom of the mine. At the same time, it avoids the shutdown of the belt conveyor due to overheating, thereby improving production efficiency.

[0024] Since the water spraying is carried out intermittently, the excessive wetting and safety hazards caused by long-term continuous water spraying of the belt conveyor are avoided; at the same time, it can also have a certain degree of wetting and dust reduction effect on the coal transported on the belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The schematic diagram of the structure of the monitoring substation in the present invention is shown;

[0026] Figure 2 The overall structural diagram of the intrinsically safe monitoring device of the present invention is shown;

[0027] Figure 3 Shows Figure 2 A magnified view of the structure of the middle A part;

[0028] Figure 4 The schematic diagram of the structure of the water storage bucket and the water delivery pump pipe assembly in the present invention is shown;

[0029] Figure 5 A schematic diagram showing the structure of the assembly of the barrel cover and the floating plate in the present invention is shown;

[0030] Figure 6 A schematic diagram showing the structure of the water storage bucket and the floating plate assembly in the present invention is shown;

[0031] Figure 7 Shows Figure 2 A magnified view of the structure of the middle B area;

[0032] Figure 8 The schematic diagram of the structure of the assembly of the spray pipe and the elbow pipe in the present invention is shown;

[0033] Fig. 9 A schematic diagram showing the structure of the assembly of the threaded cover and the pressure-bearing air bag in the present invention is shown;

[0034] Fig.10 The schematic diagram of the structure of the telescopic airbag in the present invention is shown;

[0035] Fig.11 A schematic diagram showing the structure of the assembly of the pressure-bearing airbag and the telescopic airbag in the present invention is shown;

[0036] Fig.12 Shows Figure 2 A magnified view of the structure of part C in the middle.

[0037] As shown in the figure: 1. Monitoring substation; 11. Guide column; 12. Pressure sensor 1; 121. Z-type bracket 1; 13. Pressure sensor 2; 131. Z-type bracket 2; 14. Infrared temperature sensor; 141. Suspension frame; 2. Water storage barrel; 21. Bucket cover; 211. Water inlet; 22. Water outlet; 23. Water guide trough; 3. Water pump pipe; 4. Solenoid valve; 41. L-shaped water pipe; 42. Straight water pipe; 421. Water distribution pipe; 5. Spray assembly; 51. Spray pipe; 511. Threaded pipe; 52. Threaded cover; 521. air pipe hole; 522. guide rod; 53. elbow pipe; 54. telescopic airbag; 541. center perforation; 542. circular ring plate; 543. air guide pipe; 55. water diversion trough; 56. diagonal support rod; 57. pressure-bearing airbag; 571. circular pad; 6. floating plate; 61. bayonet; 62. float; 7. pressure-touch assembly; 71. guide support rod; 72. pressure-touch plate; 8. top-touch assembly; 81. top support rod; 82. top-touch plate; 83. reset spring; 9. belt conveyor; 91. frame; 92. roller; 93. conveyor belt. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] Embodiment 1

[0040] In order to solve the technical problems in the background technology, the following intrinsically safe monitoring device for mines is provided:

[0041] Combination Figure 1 and Figure 2 As shown, the intrinsically safe monitoring device for mining comprises a monitoring substation 1 provided with a plurality of guide posts 11, and the device further comprises a water storage barrel 2 with a floating plate 6 therein, the top cover of the water storage barrel 2 is provided with a barrel cover 21 adapted thereto, a water inlet 211 is provided along one side of the top surface of the barrel cover 21, and the water inlet 211 is externally connected to a water delivery pump pipe 3 for pumping water collected in a water tank at the bottom of the well;

[0042] The top surface of the barrel cover 21 is radially and spacedly fixed with a Z-shaped bracket 121 and a Z-shaped bracket 2 131 along both sides of the center thereof. The top surface of the Z-shaped bracket 121 is positively provided with a pressure sensor 12 electrically connected to the corresponding guide column 11. The pressure sensor 12 is used to detect the deformation pressure fed back by the pressure contact component 7 arranged on the top surface of the floating plate 6 and slidably connected with the barrel cover 21; the top surface of the Z-shaped bracket 2 131 is reversely provided with a pressure sensor 2 13 electrically connected to the corresponding guide column 11. The pressure sensor 2 13 is used to detect the deformation pressure fed back by the top contact component 8 elastically connected with the barrel cover 21; a water outlet 22 is provided in the middle of the bottom of the water storage barrel 2, and the water outlet 22 is externally connected to a solenoid valve 4 electrically connected to the corresponding guide column 11, and the bottom of the solenoid valve 4 is connected to an L-shaped water pipe 41, and the port of the L-shaped water pipe 41 is connected to a spray component 5, and the spray component 5 is used to spray water to cool the belt conveyor 9 arranged directly below it;

[0043] The water storage barrel 2 is divided into a shallow water state and a deep water state. When in the shallow water state, the floating plate 6 drives the pressure contact component 7 to press down the pressure sensor 12. After the monitoring substation 1 receives the pressure signal fed back by the pressure sensor 12, it controls the solenoid valve 4 to close, and communicates with the ground monitoring center to open the water pump pipe 3; when in the deep water state, the floating plate 6 contacts the top contact component 8 and drives it to push up the pressure sensor 2 13. After the monitoring substation 1 receives the pressure signal fed back by the pressure sensor 2 13, it controls the solenoid valve 4 to open, and communicates with the ground monitoring center to close the water pump pipe 3.

[0044] By adopting the above technical solution, in the device, when the water storage barrel 2 is in a shallow water state, the floating plate 6 moves downward as the water level drops, and then applies pressure to the pressure sensor 12 through the pressure contact component 7; after receiving the pressure signal, the monitoring substation 1 controls the solenoid valve 4 to close, stops spraying water for cooling, and simultaneously communicates with the ground monitoring center to open the water delivery pump pipe 3 to pump more collected water from the bottom of the well into the water storage barrel 2;

[0045] When the water level of the water storage tank 2 rises to the deep water state, the floating plate 6 moves up and contacts the top contact component 8, exerting pressure on the pressure sensor 2 13; after receiving the pressure signal, the monitoring substation 1 controls the solenoid valve 4 to open, starts to spray water to cool the belt conveyor 9 through the spray component 5, and simultaneously communicates with the ground monitoring center to close the water delivery pump pipe 3 and stop pumping water into the water storage tank 2;

[0046] This intelligent intermittent watering and cooling method not only ensures that the belt conveyor 9 is cooled down in time during operation and ensures its safe operation, but also saves water resources by utilizing the collected water in the water tank at the bottom of the well, and reduces the cost of connecting municipal water to the mine; at the same time, it avoids the shutdown of the belt conveyor 9 due to overheating, thereby improving production efficiency;

[0047] Since the water spraying is carried out intermittently, the excessive wetting and safety hazards caused by long-term continuous water spraying of the belt conveyor 9 are avoided; at the same time, it can also have a certain degree of wetting and dust reduction effect on the coal transported on the belt conveyor 9.

[0048] Embodiment 2

[0049] Combination Figure 2 as well as Figure 7~Figure 11 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0050] In this embodiment, if Figure 2 As shown, the port of the L-shaped water pipe 41 is vertically connected to a straight water pipe 42, and the bottom surface of the straight water pipe 42 is vertically connected to multiple water branch pipes 421 at axial equal intervals. The bottom of the water branch pipe 421 is connected to a spray component 5, and the spray component 5 can spray water from the inside to the outside to cool the belt conveyor 9 as the water pressure in the water storage barrel 2 decreases.

[0051] By adopting the above technical solution, multiple spraying components 5 are arranged at equal intervals, so that the water spray can cover a wider area of ​​the belt conveyor 9, thereby achieving comprehensive and uniform cooling of the belt conveyor 9;

[0052] Since the coal is not evenly spread on the conveyor belt 93 of the belt conveyor 9, but generally in a V shape, the thickness of the coal in the middle of the conveyor belt 93 is thicker than that on both sides at the same position, so that the middle of the conveyor belt 93 is in closer contact with the roller 92, and the heat generated by friction is more, so the temperature in the middle of the conveyor belt 93 is higher than that on both sides;

[0053] The spray assembly 5 of the device can spray water from the inside to the outside to cool the conveyor belt 93 of the belt conveyor 9 as the water pressure in the water storage barrel 2 decreases. This design allows the central area of ​​the conveyor belt 93 of the belt conveyor 9 to be cooled first when the initial water pressure in the water storage barrel 2 is large and the amount of water sprayed is large, and then gradually expands to the edge area as the water pressure in the water storage barrel 2 decreases and the amount of water sprayed is small. This ensures the cooling effect and avoids the waste of water resources.

[0054] like Figure 7~Figure 11 As shown, the spray assembly 5 includes a spray pipe 51, the top of the spray pipe 51 is axially connected and docked with the bottom of the corresponding water distribution pipe 421, and the bottom is closed; a pressure-bearing airbag 57 is tightly attached to the middle of the inner bottom surface of the spray pipe 51, and a telescopic airbag 54 is fixed to the middle of the outer bottom surface, and the top surface of the telescopic airbag 54 is connected to the bottom surface of the pressure-bearing airbag 57 through a matching air guide pipe 543; a plurality of through holes are opened at equal intervals in the circumferential direction at the top of the spray pipe 51, and a 90° elbow pipe 53 is inserted and matched in the through hole, and a water diversion groove 55 is inclined downwardly arranged just below the bottom of each elbow pipe 53, and the upper end of the water diversion groove 55 is hinged to the outer wall of the spray pipe 51, and a diagonal support rod 56 is hinged between the lower bottom wall and the bottom edge of the telescopic airbag 54;

[0055] The water storage barrel 2 is in a deep water state, the solenoid valve 4 is opened, and the pressure-bearing airbag 57 is subjected to water pressure so that part of its gas enters the telescopic airbag 54, thereby forcing the telescopic airbag 54 to extend axially and simultaneously drive the multiple water diversion grooves 55 to shrink inward, and the shrinkage amplitude is proportional to the water pressure on the pressure-bearing airbag 57.

[0056] By adopting the above technical solution, the spray assembly 5 is provided to realize intelligent adjustment of the water spray range and intensity through the linkage design of the pressure-bearing airbag 57 and the telescopic airbag 54; when the water storage tank 2 is in a deep water state, the solenoid valve 4 is opened, the water flows into the spray pipe 51, the pressure-bearing airbag 57 is affected by the water pressure, and part of the gas enters the telescopic airbag 54 through the air guide pipe 543, causing the telescopic airbag 54 to extend axially; this change simultaneously drives the multiple water guide grooves 55 to shrink inward, and the shrinking range is proportional to the water pressure on the pressure-bearing airbag 57. Therefore, with the change of water pressure, the spray assembly 5 can automatically adjust the range and intensity of water spray, ensuring that the water spray is more accurate and efficient.

[0057] Since the coal is distributed in a V-shape on the conveyor belt 93 of the belt conveyor 9, the thickness of the coal in the middle is thicker than that on the two sides, and the heat generated by friction is also greater; this design of the spray assembly 5 makes it possible for the multiple water diversion grooves 55 to be in a relatively retracted state when the water pressure is large and the water spray volume is large, and the water spray mainly covers the middle area of ​​the conveyor belt 93, thereby achieving focused cooling of the heat concentrated area; as the water pressure in the water storage barrel 2 decreases, the multiple water diversion grooves 55 gradually open outward, and the water spray range gradually expands to the edge area of ​​the conveyor belt 93, which not only ensures the cooling effect, but also avoids the waste of water resources.

[0058] By intelligently adjusting the water spray range and intensity, the spray component 5 can reasonably allocate water resources according to actual needs, avoiding excessive waste of water resources in traditional spraying methods.

[0059] The structure design of the spray assembly 5 is reasonable. The pressure-bearing airbag 57 and the telescopic airbag 54 can be made of soft and durable materials, which can withstand certain water pressure changes without being easily damaged. At the same time, the hinged design between the water guide groove 55 and the spray pipe 51, as well as the supporting role of the diagonal support rod 56, enhance the stability and durability of the structure, and ensure the reliability of the spray assembly 5 in long-term use.

[0060] like Figure 8 As shown, the spray pipe 51 is connected to the bottom of the corresponding water distribution pipe 421 by threaded connection through the threaded pipe 511 integrally connected to the top of the spray pipe 51 , and the outer diameter of the threaded pipe 511 is smaller than the outer diameter of the spray pipe 51 .

[0061] By adopting the above technical solution, the threaded pipe 511 can make the entire spray assembly 5 easy to install and maintain, greatly improving work efficiency and convenience; because the threaded pipe 511 is integrally connected to the spray pipe 51, and its outer diameter is smaller than the outer diameter of the spray pipe 51, this allows the water flow to enter the spray pipe 51 through the threaded pipe 51. The pipe can be more smoothly distributed to each elbow pipe 53. This design helps to ensure the uniform distribution of water flow in the spray assembly 5, thereby improving the effect and efficiency of water spray cooling.

[0062] like Fig. 9 and Fig.11 As shown, the bottom of the spray pipe 51 is screwed with a threaded cover 52, and a cylindrical pressure-bearing air bag 57 is fixedly attached to the middle of the inner bottom surface of the threaded cover 52. The outer wall of the pressure-bearing air bag 57 is in gap contact with the inner wall of the spray pipe 51, and the top surface thereof is fixedly attached with a circular pad 571 that is slidably fitted with the inner wall of the spray pipe 51.

[0063] By adopting the above technical solution, the bottom of the spray pipe 51 is screwed with a threaded cover 52. This threaded connection ensures a tight connection between the spray pipe 51 and the threaded cover 52, effectively preventing water from leaking from the connection, and also making the installation and maintenance of the spray pipe 51 and the threaded cover 52 simple and quick;

[0064] The outer wall of the cylindrical pressure-bearing airbag 57 is in gap contact with the inner wall of the spray pipe 51, and a circular pad 571 is fixedly attached to the top surface thereof, which is in sliding fit with the inner wall of the spray pipe 51. This design allows water to flow down from the water distribution pipe 421 and first impact the circular pad 571 to evenly press down the pressure-bearing airbag 57, and then be sprayed out from each elbow pipe 53.

[0065] like Fig.10 and Fig.11 As shown, the telescopic airbag 54 is a corrugated structure with a central through hole 541 therein, and is gap-connected with a guide rod 522 vertically connected to the middle of the outer bottom surface of the threaded cover 52 through the central through hole 541; the top surface of the telescopic airbag 54 is fixedly attached to the outer bottom surface of the threaded cover 52, and an air guide tube 543 is arranged on the top surface radially and vertically symmetrically around the central through hole 541, and the two air guide tubes 543 respectively pass through the air pipe holes 521 opened on the bottom surface of the threaded cover 52, and are connected to the bottom surface of the pressure-bearing airbag 57; a circular plate 542 is fixedly attached to the bottom surface of the telescopic airbag 54, which is slidably connected with the guide rod 522, and the outer diameter of the circular plate 542 is larger than the outer diameter of the telescopic airbag 54, and the lower end of the diagonal support rod 56 is hinged to the outer edge of the circular plate 542.

[0066] By adopting the above technical solution, the telescopic airbag 54 is a corrugated structure, which makes it have good elasticity and recovery; the telescopic airbag 54 is provided with a central through hole 541, so that it can be connected to the guide rod 522 with a gap; the guide rod 522 not only provides a stable axial support for the telescopic airbag 54, but also ensures that it can be extended or contracted along a predetermined direction (axial direction) when it is subjected to the air pressure of the pressure-bearing airbag 57, thereby avoiding distortion or deviation caused by uneven force;

[0067] The two air guide tubes 543 respectively pass through the air pipe holes 521 opened on the bottom surface of the threaded cover 52 and communicate with the bottom surface of the pressure-bearing airbag 57. This design enables flexible gas transmission between the pressure-bearing airbag 57 and the telescopic airbag 54.

[0068] The outer diameter of the annular plate 542 is larger than the outer diameter of the telescopic airbag 54, and the lower end of the diagonal support rod 56 is hinged to the outer edge of the annular plate 542. This design enables the telescopic airbag 54 to drive the annular plate 542 and the diagonal support rod 56 to move synchronously when extending or contracting, thereby accurately adjusting the retraction angle and water spraying direction of the water diversion trough 55.

[0069] Embodiment 3

[0070] Combination Figure 2 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0071] In this embodiment, if Figure 3 and Figure 5As shown, the pressure contact assembly 7 includes a guide support rod 71 vertically connected to the top surface of the floating plate 6. The guide support rod 71 passes through the barrel cover 21 and the Z-shaped bracket 121, and its top end is vertically connected to a touch pressure plate 72 for following the downward pressure pressure sensor 12.

[0072] By adopting the above technical solution, the pressure-touch assembly 7 is arranged to move up and down with the change of the water level in the water storage barrel 2 through the guide support rod 71 vertically connected to the top surface of the floating plate 6; when the water storage barrel 2 is in a shallow water state, the floating plate 6 and the guide support rod 71 and the pressure-touch plate 72 thereon will drop with the drop of the water level until the pressure-touch plate 72 is pressed down to the pressure sensor 12. This design enables the monitoring substation 1 to accurately receive the information that the water level is in a shallow water state;

[0073] Once the touch plate 72 is pressed down to the pressure sensor 12, the pressure sensor 12 will immediately feed back the pressure signal to the monitoring substation 1. The monitoring substation 1 can respond quickly based on the received signal, such as controlling the solenoid valve 4 to close, and communicating with the ground monitoring center to open the water pump pipe 3 to replenish the water in the water storage tank 2. This real-time feedback mechanism ensures that the monitoring device can respond quickly to water level changes and ensure the safe operation of the belt conveyor 9.

[0074] like Figure 3 and Figure 5 As shown, the top contact component 8 includes a top support rod 81 which is vertically gapped with the barrel cover 21, and a reset spring 83 is axially sleeved on the upper part of the top support rod 81. The bottom end of the reset spring 83 is connected to the top surface of the barrel cover 21, and the top end is connected to the bottom surface of a top contact plate 82 which is vertically connected to the top of the top support rod 81; when the reset spring 83 is in a natural state, the top contact plate 82 is close to the gap with the pressure sensor 213.

[0075] By adopting the above technical solution, the top contact component 8 is set up to accurately monitor the water level status in the water storage barrel 2 through the cooperation of the top support rod 81 and the reset spring 83; when the water level rises and reaches the deep water state, the floating plate 6 will rise and contact the top support rod 81, thereby pushing the top contact plate 82 to push the top pressure sensor 13; this design ensures that when the water level changes, the monitoring substation 1 can receive accurate water level signals, thereby controlling the opening or closing of the solenoid valve 4, and realizing intermittent water sprinkling and cooling of the belt conveyor 9.

[0076] like Figure 2 and Figure 4~Figure 6As shown, the bottom of the water storage barrel 2 is an arc-shaped structure, and its inner barrel wall is longitudinally integrated with a water guide groove 23 of the same size, and the water guide groove 23 is located directly below the water inlet 211 of the barrel cover 21, and the water outlet end of the water pump pipe 3 is inserted into the water guide groove 23 from the water inlet 211; the floating plate 6 is a circular structure, and its outer diameter is the same as the inner diameter of the water storage barrel 2, and a bayonet 61 is opened on one side, and the bayonet 61 is slidably engaged with the water guide groove 23; a hemispherical float 62 is attached to the middle of the bottom surface of the floating plate 6.

[0077] By adopting the above technical solution, the water guide groove 23 is located directly below the water inlet 211 of the barrel cover 21 and is connected to the water outlet end of the water delivery pump pipe 3. The water guide groove 23 is slidably engaged with the bayonet 61 on the floating plate 6. This design can ensure that the collected water pumped from the water tank at the bottom of the well can flow directly and smoothly into the water storage barrel 2, avoiding the overflow of water or the impact of the floating plate 6; at the same time, the floating plate 6 can be stably suspended in the water storage barrel 2 and move up and down with the rise or fall of the water level; the cooperation between the bayonet 61 and the water guide groove 23 also plays a role in fixing the floating plate 6 to prevent it from deflecting or shaking under the impact of the water flow;

[0078] The hemispherical floating body 62 makes the floating plate 6 have better buoyancy and stability in the water, and can move up and down smoothly with the rise or fall of the water level. At the same time, the hemispherical floating body 62 can also reduce the impact and shaking of the floating plate 6 by the water flow.

[0079] like Figure 2 and Fig.12 As shown, the belt conveyor 9 includes a frame 91, rollers 92 and a conveyor belt 93. A suspension frame 141 with an inverted T-shaped structure is installed on the top surface of the frame 91 along its short side direction. An infrared temperature sensor 14 for monitoring the temperature of the conveyor belt 93 is installed on the vertical part of the suspension frame 141, and the infrared temperature sensor 14 is electrically connected to the guide column 11 of the corresponding monitoring substation 1; the monitoring substation 1 controls the belt conveyor 9 to stop after receiving the over-temperature warning signal fed back by the infrared temperature sensor 14.

[0080] By adopting the above technical solution, since the infrared temperature sensor 14 has the characteristic of non-contact measurement, it can capture the temperature change of the conveyor belt 93 in real time and accurately; when the conveyor belt 93 is overheated due to long-term friction of the roller 92 or other reasons, the infrared temperature sensor 14 can respond quickly and send out an over-temperature warning signal; this real-time monitoring and warning mechanism helps to timely discover potential safety hazards and prevent the occurrence of safety accidents such as fire;

[0081] The infrared temperature sensor 14 can monitor the temperature value of the conveyor belt 93 in real time for later recording and evaluation, and can also be used as a backup guarantee. In extreme cases, the intermittent watering and cooling method of the device fails to achieve the expected cooling effect, and an over-temperature warning signal can be issued, causing the monitoring substation 1 to control the belt conveyor 9 to shut down.

[0082] The working principle and use process of the present invention:

[0083] When the present invention is used, first, when the water storage barrel 2 is in an initial shallow water state, the floating plate 6 is in a lower position due to the low water level. At this time, the guide support rod 71 descends with the floating plate 6 and drives the touch plate 72 to press down the pressure sensor 12; after receiving this signal, the monitoring substation 1 controls the solenoid valve 4 to close, stops spraying water to the belt conveyor 9, and communicates with the ground monitoring center through computer communication, and opens the water delivery pump pipe 3 to pump the collected water in the bottom water tank into the water storage barrel 2;

[0084] As the water level rises, the floating plate 6 also rises; when the water level reaches the deep water state, the floating plate 6 contacts the top support rod 81 and pushes it up, and the top contact plate 82 rises and pushes up the pressure sensor 2 13; after receiving this signal, the monitoring substation 1 controls the solenoid valve 4 to open, allowing water to flow into the spray assembly 5, and communicates with the ground monitoring center through computer communication to close the water delivery pump pipe 3;

[0085] At this time, the pressure-bearing airbag 57 is acted upon by the water pressure, and part of the gas enters the telescopic airbag 54 through the air guide tube 543, causing the telescopic airbag 54 to extend axially; the extended telescopic airbag 54 drives the multiple water diversion grooves 55 to close inwardly through the diagonal support rod 56, so that the water flow sprayed from the elbow pipe 53 is more concentrated to spray water on the middle area of ​​the conveyor belt 93 of the belt conveyor 9, thereby achieving focused cooling of the heat concentrated area; as the water pressure in the water storage barrel 2 decreases, the extension degree of the telescopic airbag 54 decreases, the water diversion groove 55 gradually opens outward, and the water spraying range gradually expands to the edge area of ​​the conveyor belt 93, thereby achieving a water spray cooling effect that gradually spreads from the inside to the outside, which not only ensures the cooling effect, but also avoids the waste of water resources;

[0086] When the water level drops to the shallow water state again, the floating plate 6 drives the guide support rod 71 and the touch plate 72 to press down the pressure sensor 12, and the monitoring substation 1 controls the electromagnetic valve 4 to close again, stops the water spraying, and notifies the ground monitoring center to open the water delivery pump pipe 3 to pump the collected water in the water tank at the bottom of the well into the water storage barrel 2;

[0087] During the whole process, the infrared temperature sensor 14 monitors the temperature of the conveyor belt 93 of the belt conveyor 9 in real time. Once an over-temperature warning is detected, the monitoring substation 1 will immediately control the belt conveyor 9 to stop to ensure safe production.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mine intrinsically safe monitoring device, comprising a monitoring substation (1) provided with a plurality of connecting posts (11), characterized in that: The device also comprises a water storage barrel (2) with a floating plate (6) therein, the top cover of the water storage barrel (2) being provided with a barrel cover (21) adapted thereto, a water inlet (211) being provided along one side of the top surface of the barrel cover (21), the water inlet (211) being externally connected to a water delivery pump pipe (3) for pumping water collected in a water tank at the bottom of the well; The top surface of the barrel cover (21) is provided with a Z-shaped bracket 1 (121) and a Z-shaped bracket 2 (131) radially spaced and fixedly disposed along both sides of the center thereof. The top surface of the Z-shaped bracket 1 (121) is provided with a pressure sensor 1 (12) electrically connected to the corresponding guide post (11) in the positive direction. The pressure sensor 1 (12) is used to detect the deformation pressure fed back by the pressure contact component (7) which is provided on the top surface of the floating plate (6) and slidably connected to the barrel cover (21). The top surface of the Z-shaped bracket 2 (131) is provided with a pressure sensor 2 electrically connected to the corresponding guide post (11) in the negative direction. (13), the second pressure sensor (13) is used to detect the deformation pressure fed back by the top contact component (8) elastically connected to the barrel cover (21); a water outlet (22) is provided in the middle of the barrel bottom of the water storage barrel (2), the water outlet (22) is externally connected to an electromagnetic valve (4) electrically connected to the corresponding guide column (11), the bottom of the electromagnetic valve (4) is connected to an L-shaped water pipe (41), the port of the L-shaped water pipe (41) is connected to a spray component (5), and the spray component (5) is used to spray water to cool the belt conveyor (9) arranged directly below it; The water storage barrel (2) is divided into a shallow water state and a deep water state. When in the shallow water state, the floating plate (6) drives the pressure contact component (7) to press down the pressure sensor 1 (12). After the monitoring substation (1) receives the pressure signal fed back by the pressure sensor 1 (12), it controls the electromagnetic valve (4) to close, and communicates with the ground monitoring center to open the water delivery pump pipe (3); when in the deep water state, the floating plate (6) contacts the top contact component (8) and drives it to push up the pressure sensor 2 (13). After the monitoring substation (1) receives the pressure signal fed back by the pressure sensor 2 (13), it controls the electromagnetic valve (4) to open, and communicates with the ground monitoring center to close the water delivery pump pipe (3); The end of the L-shaped water pipe (41) is vertically connected to a straight water pipe (42), and the bottom surface of the straight water pipe (42) is vertically connected to a plurality of water distribution pipes (421) at equal intervals in the axial direction. The bottom of the water distribution pipe (421) is connected to a spray assembly (5), and the spray assembly (5) can spray water from the inside to the outside to cool the belt conveyor (9) as the water pressure in the water storage barrel (2) decreases; The spray assembly (5) comprises a spray pipe (51), the top of the spray pipe (51) is axially connected and connected to the bottom of the corresponding water distribution pipe (421), and the bottom is closed; a pressure-bearing airbag (57) is tightly attached to the middle of the inner bottom surface of the spray pipe (51), and a telescopic airbag (54) is fixed to the middle of the outer bottom surface, and the top surface of the telescopic airbag (54) and the bottom surface of the pressure-bearing airbag (57) are connected through a matching air guide pipe (543); a plurality of through holes are opened at equal intervals in the circumferential direction at the top of the spray pipe (51), and a 90° elbow pipe (53) is inserted and matched in the through holes, and a water diversion groove (55) is arranged obliquely downward just below the bottom of each elbow pipe (53), the upper end of the water diversion groove (55) is hinged to the outer wall of the spray pipe (51), and an oblique support rod (56) is hingedly arranged between the lower bottom wall and the bottom edge of the telescopic airbag (54); The water storage barrel (2) is in a deep water state, the electromagnetic valve (4) is opened, and the pressure-bearing airbag (57) is subjected to water pressure, causing part of its gas to enter the telescopic airbag (54), thereby forcing the telescopic airbag (54) to extend axially and simultaneously driving the multiple water diversion grooves (55) to retract inwardly, and the retraction amplitude is proportional to the water pressure on the pressure-bearing airbag (57).

2. The intrinsically safe monitoring device for mines according to claim 1 is characterized in that: The spray pipe (51) is threadedly connected to the bottom of the corresponding water distribution pipe (421) through a threaded pipe (511) integrally connected to the top of the spray pipe (51), and the outer diameter of the threaded pipe (511) is smaller than the outer diameter of the spray pipe (51).

3. The intrinsically safe monitoring device for mines according to claim 1 is characterized in that: The bottom opening of the spray pipe (51) is screwed with a threaded cover (52), and a cylindrical pressure-bearing air bag (57) is fixedly attached to the middle of the inner bottom surface of the threaded cover (52). The outer wall of the pressure-bearing air bag (57) is in gap contact with the inner wall of the spray pipe (51), and the top surface thereof is fixedly attached with a circular pad (571) which is in sliding contact with the inner wall of the spray pipe (51).

4. The intrinsically safe monitoring device for mines according to claim 3 is characterized in that: The telescopic airbag (54) is a corrugated structure with a central through hole (541) therein, and is gap-connected with a guide rod (522) vertically connected to the middle of the outer bottom surface of the threaded cover (52) through the central through hole (541); the top surface of the telescopic airbag (54) is fixedly connected to the outer bottom surface of the threaded cover (52), and an air guide tube (543) is arranged on the top surface of the telescopic airbag (54) in a radially vertically symmetrical manner around the central through hole (541), and the two air guide tubes (543) respectively pass through the airway holes (521) provided on the bottom surface of the threaded cover (52) and are connected to the bottom surface of the pressure-bearing airbag (57); the bottom surface of the telescopic airbag (54) is fixedly connected with a circular plate (542) that is slidably connected with the guide rod (522), and the outer diameter of the circular plate (542) is larger than the outer diameter of the telescopic airbag (54), and the lower end of the diagonal support rod (56) is hinged to the outer edge of the circular plate (542).

5. The intrinsically safe monitoring device for mines according to claim 1 is characterized in that: The pressure-touch assembly (7) comprises a guide support rod (71) vertically connected to the top surface of the floating plate (6); the guide support rod (71) passes through the barrel cover (21) and the Z-shaped bracket (121) in a gap, and a touch-touch plate (72) for following the downward pressure pressure sensor (12) is vertically connected to its top end.

6. The intrinsically safe monitoring device for mines according to claim 5 is characterized in that: The top contact assembly (8) includes a top support rod (81) which is vertically gap-connected with the barrel cover (21); a reset spring (83) is axially sleeved on the upper part of the top support rod (81); the bottom end of the reset spring (83) is connected to the top surface of the barrel cover (21), and the top end is connected to the bottom surface of a top contact plate (82) vertically connected to the top of the top support rod (81); when the reset spring (83) is in a natural state, the top contact plate (82) is gap-connected to the second pressure sensor (13).

7. The intrinsically safe monitoring device for mines according to claim 6 is characterized in that: The bottom of the water storage barrel (2) is an arc-shaped structure, and a water guide groove (23) of the same size is connected to the inner barrel wall in a longitudinal direction, and the water guide groove (23) is located directly below the water inlet (211) of the barrel cover (21), and the water outlet end of the water delivery pump pipe (3) is inserted into the water guide groove (23) from the water inlet (211); the floating plate (6) is a circular structure, and its outer diameter is the same as the inner diameter of the water storage barrel (2), and a bayonet (61) is provided on one side of the floating plate, and the bayonet (61) is slidably engaged with the water guide groove (23); a hemispherical float (62) is attached to the middle of the bottom surface of the floating plate (6).

8. The intrinsically safe monitoring device for mining according to any one of claims 1 to 7, wherein the belt conveyor (9) comprises a frame (91), rollers (92) and a conveyor belt (93), and is characterized in that: A suspension frame (141) with an inverted T-shaped structure is mounted on the top surface of the frame (91) along its short side direction, and an infrared temperature sensor (14) for monitoring the temperature of the conveyor belt (93) is installed on the vertical portion of the suspension frame (141), and the infrared temperature sensor (14) is electrically connected to the guide column (11) of the corresponding monitoring substation (1); the monitoring substation (1) controls the belt conveyor (9) to stop after receiving the over-temperature warning signal fed back by the infrared temperature sensor (14).

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