Intelligent spraying device for ultra-thin coal mining machine

Abstract

The application discloses an intelligent spraying device for an extremely thin coal mining machine, which comprises an integrated valve group, a water and electricity locking device, a high-pressure gauge assembly, a low-pressure gauge assembly, a pressure sensor assembly and a flow sensor assembly; the integrated valve group is integrated with a backwashing filter, a high-pressure safety valve, a pressure reducing valve and a low-pressure safety valve, and is provided with various interfaces and high / low-pressure water outlets; the water and electricity locking device controls the total water inlet pressure; each sensor assembly is connected in series in each water channel, and can monitor the pressure and flow in real time and give an early warning to stop the machine when the parameters are abnormal; the device is designed in an integrated manner, can greatly save space to adapt to the extremely thin coal mining machine, improve the installation and maintenance efficiency and system reliability, strengthen the intelligent monitoring capacity, adapt to different operation conditions, can realize efficient dust reduction and multi-component cooling, and ensures the safety of underground operation.

Description

Technical Field

[0001] This invention belongs to the field of spray technology for ultra-thin coal mining machines, and particularly relates to an intelligent spray device for ultra-thin coal mining machines. Background Technology

[0002] The ultra-thin coal mining machine operates in a unique environment, with a low profile and narrow width, placing extremely high demands on the spatial adaptability and reliability of auxiliary equipment. The intelligent spray system, a core auxiliary device for ultra-thin coal mining machines, primarily achieves two core functions through water circulation: first, it provides internal spraying for the drum, delivering high-pressure water to the drum nozzles to form a spray curtain, reducing dust content at the working face, improving underground working conditions, and ensuring the normal operation of the coal mining machine; second, it utilizes water cooling principles to cool components such as the cutting motor, traction motor, and pump station motor, as well as structures such as the cutting transmission, traction transmission, pump station oil tank, and electrical control box, reducing the machine's operating temperature and preventing component failure due to high temperatures. In addition, the external spraying system uses high-pressure water sprayed through nozzles to form a mist-like water curtain, further reducing dust, improving visibility at the underground working face, diluting methane, and wetting the coal seam, ensuring safe underground operations.

[0003] In existing coal mining machine spray devices, the components are arranged in a dispersed, series-connected manner, each with a single function. This dispersed arrangement leads to complex pipeline connections, occupies a large space, and is difficult to adapt to the limited installation space of ultra-thin coal mining machines, resulting in extremely low space utilization. The independent setting and series installation of each component not only increases the probability of failure but also makes the installation process cumbersome, maintenance and replacement inconvenient, and requires high professional skills from operators. Excessive pipeline redundancy makes the system susceptible to leakage and blockage due to the harsh environment of the fully mechanized mining face, further reducing system reliability. The lack of precise monitoring of each water circuit and insufficient level of intelligence make it impossible to detect abnormal pressure and flow in a single water circuit in a timely manner. This can easily lead to the failure of the entire system due to local failures, affecting the normal operation of ultra-thin coal mining machines and the safety of underground operations. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the prior art, the present invention provides an intelligent spray device for ultra-thin coal mining machines.

[0005] The intelligent spray device for ultra-thin coal mining machines of the present invention includes: an integrated valve group, a water and electricity interlocking device, a high-pressure meter assembly, a low-pressure meter assembly, a pressure sensor assembly, and a flow sensor assembly. The integrated valve group is provided with a high-pressure meter interface, a low-pressure meter interface, a water and electricity interlocking interface, a high-pressure safety valve overflow interface, a low-pressure safety valve overflow interface, a high-pressure water outlet, a low-pressure water outlet, and a main water inlet. The water and electricity interlocking device is connected to the water and electricity interlocking interface of the integrated valve group and is used to control the inlet water pressure of the main water inlet and realize automatic pressure control. The high-pressure meter assembly and the low-pressure meter assembly are respectively connected to the high-pressure meter interface and the low-pressure meter interface of the integrated valve group and are used to display the high-pressure water and low-pressure water pressure values ​​respectively. Each high-pressure water path and each low-pressure water path are connected in series with the pressure sensor assembly and the flow sensor assembly to monitor the pressure and flow values ​​of the corresponding water path in real time. When the pressure value or flow value is less than the preset value, the system automatically issues an early warning and stops the machine. The integrated valve assembly includes a backwash filter, a high-pressure safety valve, a pressure reducing valve, and a low-pressure safety valve. The inlet of the backwash filter is connected to the main inlet. The outlet of the backwash filter is connected to both the high-pressure outlet and the high-pressure gauge interface. The inlet of the high-pressure safety valve is connected to the outlet of the backwash filter. The overflow port of the high-pressure safety valve is connected to the overflow interface of the high-pressure safety valve. The inlet of the pressure reducing valve is connected to the outlet of the backwash filter. The outlet of the pressure reducing valve is connected to both the low-pressure outlet and the low-pressure gauge interface. The inlet of the low-pressure safety valve is connected to the outlet of the pressure reducing valve. The overflow port of the low-pressure safety valve is connected to the overflow interface of the low-pressure safety valve.

[0006] Furthermore, in the aforementioned intelligent spray device for ultra-thin coal mining machines, there are 4 high-pressure water outlets and 7 low-pressure water outlets, and each water outlet is equipped with an adjusting rod for adjusting the water output.

[0007] Preferably, in the above-mentioned intelligent spray device for ultra-thin coal mining machines, 6 of the 7 low-pressure water outlets are working branches and 1 is a backup branch. The working branches respectively cool the electrical control box, the pump station oil tank and the pump station motor, the traction gearbox, the traction motor, and the left and right rocker arm motors.

[0008] Furthermore, in the aforementioned intelligent spray device for ultra-thin coal mining machines, the backwash filter consists of a four-position structure and a ratchet handle, used to achieve backwashing operation to ensure filtration effect.

[0009] Furthermore, in the aforementioned intelligent spray device for ultra-thin coal mining machines, the high-pressure safety valve is set with a maximum pressure value that the high-pressure outlet can withstand, which is used to automatically release pressure when the water supply pressure exceeds the set value. The low-pressure safety valve is set with a maximum pressure value that the low-pressure outlet can withstand, which is used to limit the low-pressure water pressure after being reduced by the pressure reducing valve, and to automatically release pressure when the low-pressure water pressure exceeds the set value.

[0010] Furthermore, in the aforementioned intelligent spray device for ultra-thin coal mining machines, the high-pressure water outlet is connected to the spray blocks installed at the left and right ends of the drum and rocker arm respectively via high-pressure hoses, in order to form a spray water curtain to reduce dust.

[0011] The intelligent spray device for ultra-thin coal mining machines of the present invention has the following advantages and beneficial effects: This invention can monitor the pressure and flow parameters of each water channel in real time. When abnormal parameters occur, the system can automatically issue an early warning and shut down to prevent the local fault from escalating. This greatly improves the intelligent monitoring and fault prevention capabilities of the spray device and ensures the stable operation of the ultra-thin coal mining machine. The integrated valve assembly design maximizes installation space and perfectly fits the low and narrow body structure of the ultra-thin coal mining machine. At the same time, the integrated structure improves the integration stability of the components and enhances the adaptability of the device in the harsh environment of the fully mechanized mining face, which is characterized by high dust, high vibration, and high humidity. This reduces the probability of component failure due to environmental factors. In addition, the reduced number of pipelines lowers the probability of failures such as leakage and blockage. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the intelligent spray device for ultra-thin coal mining machines according to the present invention.

[0013] Explanation of reference numerals in the attached figures: 1: Integrated valve assembly; 11: Backwash filter; 12: High-pressure safety valve; 13: Pressure reducing valve; 14: Low-pressure safety valve; 2: Water and electricity interlocking device; 3: High pressure gauge assembly; 4: Low pressure gauge assembly; 5: Pressure sensor assembly; 6: Flow sensor assembly; 7: Adjusting rod. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0015] like Figure 1 As shown, the intelligent spray device for ultra-thin coal mining machines of the present invention includes: an integrated valve group 1, a water-electricity interlocking device 2, a high-pressure gauge assembly 3, a low-pressure gauge assembly 4, a pressure sensor assembly 5, and a flow sensor assembly 6. The integrated valve group 1 is provided with a high-pressure gauge interface, a low-pressure gauge interface, a water-electricity interlocking interface, a high-pressure safety valve overflow interface, a low-pressure safety valve overflow interface, a high-pressure water outlet, a low-pressure water outlet, and a main water inlet, thereby adapting to the spatial layout requirements of ultra-thin coal mining machines. The water-electricity interlocking device 2 is connected to the water-electricity interlocking interface of the integrated valve group 1 and is used to control the water inlet pressure of the main water inlet and realize automatic pressure control to ensure that the water inlet pressure of the main water inlet meets the requirements of ultra-thin coal mining machines. The operation requirements of the spray and cooling system are designed to ensure stable operation of the device. The high-pressure gauge assembly 3 and the low-pressure gauge assembly 4 are connected to the high-pressure gauge interface and the low-pressure gauge interface of the integrated valve group 1, respectively, to display the pressure values ​​of high-pressure water and low-pressure water. This allows operators to intuitively monitor the system pressure status and promptly troubleshoot any abnormalities. Each high-pressure water circuit and low-pressure water circuit is connected in series with a pressure sensor assembly 5 and a flow sensor assembly 6 to monitor the pressure and flow values ​​of the corresponding water circuit in real time. When the pressure or flow value is less than the preset value, the system will automatically issue a warning and shut down to prevent the spray and cooling functions from failing due to water circuit abnormalities, thus ensuring the safe operation of the ultra-thin coal mining machine. The integrated valve assembly 1 includes a backwash filter 11, a high-pressure safety valve 12, a pressure reducing valve 13, and a low-pressure safety valve 14. The inlet of the backwash filter 11 is connected to the main inlet, and the outlet of the backwash filter 11 is connected to both the high-pressure outlet and the high-pressure gauge interface. The inlet of the high-pressure safety valve 12 is connected to the outlet of the backwash filter 11, and the overflow port of the high-pressure safety valve 12 is connected to the overflow interface of the high-pressure safety valve. The inlet of the pressure reducing valve 13 is connected to the outlet of the backwash filter 11, and the outlet of the pressure reducing valve 13 is connected to both the low-pressure outlet and the low-pressure gauge interface. The pressure reducing valve 13 is used to reduce the pressure of the high-pressure water supply to a preset pressure to ensure that the cooling water pressure of the motor and various enclosures meets the usage requirements. The inlet of the low-pressure safety valve 14 is connected to the outlet of the pressure reducing valve 13, and the overflow port of the low-pressure safety valve 14 is connected to the overflow interface of the low-pressure safety valve.

[0016] Furthermore, in the intelligent spray device for the ultra-thin coal mining machine of the present invention, there are 4 high-pressure water outlets and 7 low-pressure water outlets. Each water outlet is equipped with an adjusting rod 7 for adjusting the water output, which is used to flexibly adjust the water output of the corresponding water channel to adapt to the spray dust suppression and cooling needs of different parts of the ultra-thin coal mining machine.

[0017] Preferably, in the intelligent spray device for ultra-thin coal mining machines of the present invention, 6 of the 7 low-pressure water outlets are working branches and 1 is a backup branch. The working branches cool the electrical control box, the pump station oil tank and the pump station motor, the traction gearbox, the traction motor and the left and right rocker arm motors, respectively. The backup branch can be flexibly connected according to actual operation needs, improving the adaptability and flexibility of the device.

[0018] Furthermore, in the ultra-thin coal mining machine intelligent spray device of the present invention, the backwash filter 11 consists of a four-position structure and a ratchet handle, which is used to realize the backwash operation to ensure the filtration effect.

[0019] Furthermore, in the intelligent spray device for the ultra-thin coal mining machine of the present invention, the high-pressure safety valve 12 is set with a maximum pressure value that the high-pressure outlet can withstand, serving as a safety protection component for the entire water supply system. It is used to automatically release pressure when the water supply pressure exceeds the set value to prevent the system from being damaged due to overpressure. The low-pressure safety valve 14 is set with a maximum pressure value that the low-pressure outlet can withstand, serving to limit the low-pressure water pressure after being reduced by the pressure reducing valve 13. It is also used to automatically release pressure when the low-pressure water pressure exceeds the set value to ensure the safety of the low-pressure water circuit components.

[0020] Furthermore, in the intelligent spray device for the ultra-thin coal mining machine of the present invention, the high-pressure water outlet is connected to the spray blocks installed at the left and right ends of the drum and the rocker arm respectively through a high-pressure hose, so as to form a spray water curtain to achieve dust suppression.

[0021] Specifically, the total water output from the spray pump station enters through the main inlet. The water pressure is checked by the water-electricity interlock device 2 to ensure it meets operating requirements. Water meeting these requirements flows into the backwash filter 11 for filtration. The filtered water is then divided into two streams: one flows to the high-pressure outlet and high-pressure gauge interface, and the other flows to the pressure reducing valve 13. The total inlet pressure and high-pressure water pressure are controlled by the high-pressure safety valve 12. When the pressure exceeds the set maximum pressure limit of the high-pressure outlet, the high-pressure safety valve 12 releases pressure through its overflow interface. The low-pressure water, after being reduced in pressure by the pressure reducing valve 13, flows to the low-pressure outlet and low-pressure gauge interface. The low-pressure water pressure is controlled by the low-pressure safety valve 14. When the pressure exceeds the set maximum pressure limit of the low-pressure outlet, the low-pressure safety valve 14 releases pressure through its overflow interface, ensuring stable pressure throughout the system.

[0022] The water flow rate of each water channel can be adjusted using the regulating rod 7 at the corresponding outlet. The specific flow direction is as follows: Four high-pressure water channels: High-pressure water is connected to the spray blocks at both ends of the drum and rocker arm through high-pressure hoses to provide high-pressure water for spraying inside the drum and outside the rocker arm, forming a spray water curtain to reduce dust in the working area, while improving visibility at the underground working face and diluting methane. Seven low-pressure water circuits: Six of them are working branches, each corresponding to different cooling needs. One circuit connects the pressure sensor assembly 5 and the flow sensor assembly 6 in series and then enters the electrical control box to cool the transformer and frequency converter inside the electrical control box. Two circuits connect the sensor assemblies in series and then enter the pump station oil tank, pump station motor, traction gearbox, and traction motor in sequence to complete the cooling of multiple components. Two circuits connect the sensor assemblies in series and then enter the left and right rocker arm motors for cooling. After cooling, the water is discharged through the corresponding nozzles. The remaining circuit is a spare branch that can be flexibly connected to supplementary cooling or spray circuits. The pressure sensor assembly 5 and the flow sensor assembly 6 collect pressure and flow data of each water channel in real time. When any data is less than the preset value, the system immediately triggers an early warning and controls the shutdown to avoid component failure due to insufficient cooling or spray failure, thus ensuring the continuous and stable operation of the ultra-thin coal mining machine.

[0023] In summary, compared with the prior art, the intelligent spray device for ultra-thin coal mining machines of the present invention has the following advantages and beneficial effects: This invention can monitor the pressure and flow parameters of each water channel in real time. When abnormal parameters occur, the system can automatically issue an early warning and shut down to prevent the local fault from escalating. This greatly improves the intelligent monitoring and fault prevention capabilities of the spray device and ensures the stable operation of the ultra-thin coal mining machine. The integrated valve assembly design maximizes installation space and perfectly fits the low and narrow body structure of the ultra-thin coal mining machine. At the same time, the integrated structure improves the integration stability of the components and enhances the adaptability of the device in the harsh environment of the fully mechanized mining face, which is characterized by high dust, high vibration, and high humidity. This reduces the probability of component failure due to environmental factors. In addition, the reduced number of pipelines lowers the probability of failures such as leakage and blockage.

[0024] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent spraying device for an ultra-thin coal mining machine, characterized in that, The intelligent spray device for the ultra-thin coal mining machine includes an integrated valve group, a water and electricity interlocking device, a high-pressure meter assembly, a low-pressure meter assembly, a pressure sensor assembly, and a flow sensor assembly. The integrated valve group is equipped with a high-pressure meter interface, a low-pressure meter interface, a water and electricity interlocking interface, a high-pressure safety valve overflow interface, a low-pressure safety valve overflow interface, a high-pressure water outlet, a low-pressure water outlet, and a main water inlet. The water and electricity interlocking device is connected to the water and electricity interlocking interface of the integrated valve group to control the inlet water pressure of the main water inlet and realize automatic pressure control. The high-pressure meter assembly and the low-pressure meter assembly are respectively connected to the high-pressure meter interface and the low-pressure meter interface of the integrated valve group to display the high-pressure water and low-pressure water pressure values ​​respectively. Each high-pressure water path and each low-pressure water path are connected in series with the pressure sensor assembly and the flow sensor assembly to monitor the pressure and flow values ​​of the corresponding water path in real time. When the pressure or flow value is less than the preset value, the system automatically issues an early warning and stops the machine. The integrated valve assembly includes a backwash filter, a high-pressure safety valve, a pressure reducing valve, and a low-pressure safety valve. The inlet of the backwash filter is connected to the main inlet. The outlet of the backwash filter is connected to both the high-pressure outlet and the high-pressure gauge interface. The inlet of the high-pressure safety valve is connected to the outlet of the backwash filter. The overflow port of the high-pressure safety valve is connected to the overflow interface of the high-pressure safety valve. The inlet of the pressure reducing valve is connected to the outlet of the backwash filter. The outlet of the pressure reducing valve is connected to both the low-pressure outlet and the low-pressure gauge interface. The inlet of the low-pressure safety valve is connected to the outlet of the pressure reducing valve. The overflow port of the low-pressure safety valve is connected to the overflow interface of the low-pressure safety valve.

2. The intelligent spray device for ultra-thin coal mining machines according to claim 1, characterized in that, The high-pressure water outlet has 4 channels, and the low-pressure water outlet has 7 channels. Each water outlet is equipped with an adjustment rod for adjusting the water output.

3. The intelligent spray device for ultra-thin coal mining machines according to claim 2, characterized in that, Of the 7 low-pressure water outlets, 6 are working branches and 1 is a backup branch. The working branches cool the electrical control box, the pump station oil tank and the pump station motor, the traction gearbox, the traction motor and the left and right rocker arm motors, respectively.

4. The intelligent spray device for ultra-thin coal mining machines according to claim 1, characterized in that, The backwash filter consists of a four-position structure and a ratchet handle, which is used to perform backwashing operation to ensure filtration effect.

5. The intelligent spray device for ultra-thin coal mining machines according to claim 1, characterized in that, The high-pressure safety valve is set with a maximum pressure value that the high-pressure outlet can withstand, and is used to automatically release pressure when the water supply pressure exceeds the set value. The low-pressure safety valve is set with a maximum pressure value that the low-pressure outlet can withstand, and is used to limit the low-pressure water pressure after being reduced by the pressure reducing valve, and is used to automatically release pressure when the low-pressure water pressure exceeds the set value.

6. The intelligent spray device for ultra-thin coal mining machines according to claim 1, characterized in that, The high-pressure water outlet is connected to the spray blocks installed at the left and right ends of the roller and rocker arm respectively through high-pressure hoses to form a spray water curtain to reduce dust.

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