Emulsion Control System for Belt Conveyor Extension

Abstract

This invention discloses an emulsion control system for the telescopic movement of a belt conveyor, comprising a power source assembly, a transmission and filtration assembly, a flow direction control assembly, a head lifting assembly, a head support assembly, a head alignment assembly, and a head offset assembly. This solution uses an emulsion as the working medium to control the relative movement of the telescopic frame and the head, thereby achieving mechanical control of the belt conveyor's telescopic movement. Compared to existing technologies, this mechanical control offers high precision, enabling the belt conveyor to quickly follow the coal mining equipment in the fully mechanized mining face, improving mining efficiency, accelerating the mining progress, and increasing production efficiency. Furthermore, it eliminates the need for close-range manual intervention throughout the process, resulting in low safety risks, low labor intensity, and strong practicality, making it suitable for widespread promotion and application.

Description

Technical Field

[0001] This invention relates to the field of control technology for mining belt conveyors, and in particular, to an emulsion control system for the telescopic function of belt conveyors. Background Technology

[0002] A fully mechanized longwall mining face refers to a working face where basic processes such as coal breaking, loading, transportation, support, and post-mining goaf treatment are all mechanized. The belt conveyors used in conjunction with fully mechanized longwall mining faces typically need to be extended or retracted to adapt to changes in the face length and the progress of coal mining, in order to improve mining efficiency and safety, and enhance the flexibility and adaptability of the belt conveyors. Currently, the extension and retraction of belt conveyors is achieved manually. However, due to the complex geological conditions, harsh environmental conditions, high work intensity, and high safety risks inherent in fully mechanized longwall mining faces, this operating method has the following shortcomings:

[0003] 1. Low production efficiency: Due to the relatively narrow construction operation space and the presence of coal mining equipment, it is impossible to organize large-scale manual operations. Manual operation of extension and retraction requires a lot of time and effort, and it is impossible to quickly adapt to changes in the length of the working face, which affects the progress and efficiency of coal mining and seriously restricts the coal production of the fully mechanized mining face.

[0004] 2. High safety risks: Due to the relatively narrow operating space and the continuous operation of coal mining equipment, operators operate in the gaps between equipment. During manual operation of the extension and retraction process, operators need to approach the conveyor for manual adjustment, which can easily lead to accidents. In addition, improper operation may also cause the conveyor to malfunction or cause an accident.

[0005] 3. High labor intensity: Because the extended section of the belt conveyor contains belts and other devices, it is quite heavy. During disassembly and assembly, operators need to perform heavy physical labor, which increases the physical burden on the operators.

[0006] 4. Insufficient precision: Manual operation makes it difficult to achieve precise extension and retraction adjustments, which may lead to inaccurate conveyor positioning, affecting coal mining efficiency and conveyor lifespan.

[0007] Based on the above shortcomings, the telescopic control of the existing belt conveyor in the fully mechanized mining face can no longer meet people's needs and urgently needs to be solved. Summary of the Invention

[0008] This invention provides an emulsion control system for telescopic belt conveyors to solve the technical problems of low production efficiency, high safety risks, high labor intensity and insufficient precision in existing fully mechanized mining faces where belt conveyors are manually operated.

[0009] According to one aspect of the present invention, an emulsion control system for a telescopic belt conveyor is provided. The belt conveyor includes two heads and a telescopic frame disposed between the two heads. The emulsion control system includes: a power source assembly for providing and transmitting emulsion; a transfer and filtration assembly connected to the power source assembly for transferring and filtering emulsion; a flow direction control assembly connected to the transfer and filtration assembly for transferring and controlling the flow direction of emulsion; a head lifting assembly connected to the flow direction control assembly for driving the head to rise and fall vertically, thereby driving the head closer to or away from the working surface; a head support assembly connected to the flow direction control assembly for driving the support shoe to move, thereby increasing or decreasing the adhesion of the head, thereby driving the telescopic frame to move relative to the head; a head alignment assembly connected to the flow direction control assembly for driving the head to move left and right, thereby adjusting the direction of travel of the head; and a head pushing assembly connected to the flow direction control assembly for driving the telescopic frame to move back and forth relative to the head, or driving the head to move back and forth relative to the telescopic frame.

[0010] As a further improvement to the above technical solution:

[0011] Furthermore, the machine head lifting assembly includes two lifting components, which are arranged corresponding to the machine head. Each lifting component includes a lifting cylinder for driving the machine head to lift vertically, a first lifting oil circuit connected to the rodless chamber of the lifting cylinder and the flow direction control component, a second lifting oil circuit connected to the rod chamber of the lifting cylinder and the flow direction control component, a lifting regulating valve arranged on the second lifting oil circuit for adjusting the flow rate of the second lifting oil circuit, and a lifting two-way lock connected to the first and second lifting oil circuits for locking the lifting cylinder.

[0012] Furthermore, the machine head support assembly includes two support components, which are arranged corresponding to the machine head. Each support component includes a support cylinder for driving the support shoe to move, a first support oil circuit connected to the rodless chamber of the support cylinder and the flow direction control component, a second support oil circuit connected to the rod chamber of the support cylinder and the flow direction control component, a support regulating valve arranged on the second support oil circuit for adjusting the flow rate of the second support oil circuit, and a two-way support lock connected to the first and second support oil circuits for locking the support cylinder.

[0013] Furthermore, the machine head adjustment assembly includes two adjustment components, which are arranged corresponding to the machine head. Each adjustment component includes an adjustment cylinder for driving the machine head to move left and right, a first adjustment oil circuit connected to the rodless chamber of the adjustment cylinder and the flow direction control component, a second adjustment oil circuit connected to the rod chamber of the adjustment cylinder and the flow direction control component, an adjustment regulating valve arranged on the second adjustment oil circuit for adjusting the flow rate of the second adjustment oil circuit, and a two-way adjustment lock connected to the first and second adjustment oil circuits for locking the adjustment cylinder.

[0014] Furthermore, the machine head pushing assembly includes two pushing components, which are arranged corresponding to the machine head. Each pushing component includes a pushing cylinder for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil circuit connected to the rodless chamber of the pushing cylinder and the flow direction control component, a second pushing oil circuit connected to the rod chamber of the pushing cylinder and the flow direction control component, a pushing regulating valve arranged on the second pushing oil circuit for adjusting the flow rate of the second pushing oil circuit, and a pushing bidirectional lock connected to the first and second pushing oil circuits for locking the pushing cylinder.

[0015] Furthermore, the transfer filtration assembly includes an oil delivery filter for conveying and filtering the emulsion, connected to the power source assembly and the flow control assembly respectively; a safety valve for controlling the system pressure within a set range, connected to the oil delivery filter and the power source assembly respectively; and an oil return assembly for emulsion recirculation, connected to the power source assembly and the flow control assembly respectively.

[0016] Furthermore, the infusion filter includes an oil delivery pipeline connected to the power source assembly and the flow direction control assembly respectively, a ball valve installed on the oil delivery pipeline for controlling the opening and closing of the oil delivery pipeline, and a filter structure installed on the oil delivery pipeline.

[0017] Furthermore, the filtration structure includes a processing unit for conveying emulsion and filtering and depressurizing the emulsion, a return unit connected to the oil return component, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion within the processing unit, an unloading unit connected to the input end of the processing unit and the return unit for unloading the processing unit, a depressurizing unit connected to the output end of the processing unit and the return unit for depressurizing the processing unit, and a filter valve body that integrates the processing unit, the return unit, the reversing unit, the unloading unit, and the depressurizing unit.

[0018] Furthermore, the flow control assembly includes multiple electro-hydraulic directional valves arranged side by side.

[0019] Furthermore, the power source components include an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump.

[0020] The present invention has the following beneficial effects:

[0021] The emulsion control system for the telescopic belt conveyor of the present invention, during the telescopic control of the belt conveyor, operates through a power source component to provide and transmit emulsion to a transfer and filtration component. The transfer and filtration component then transmits the emulsion to a flow direction control component, filtering the emulsion during the transmission process to prevent the accumulation of micro-solid impurities in the emulsion within the actuators. First, the telescopic frame is controlled to move. The flow direction control component first controls the emulsion to flow into the head lifting component, which drives the head to descend vertically to contact the working face. Then, the emulsion is controlled to flow into the head support component, causing the support shoe to abut against the top of the coal mining channel, increasing the adhesion of the head. Next, the emulsion is controlled to flow into the head pushing component, using the head as a point of force to drive the telescopic frame to move back and forth relative to the head. Finally, the head is controlled to move again. The flow direction control component first controls the emulsion to flow into the head support component, driving the... The moving support shoe detaches from the top of the coal mining channel, and then the emulsion is controlled to flow into the head lifting assembly to drive the head vertically upward, moving it away from the working face. Finally, the emulsion is controlled to flow into the head pushing assembly to drive the head to move back and forth relative to the telescopic mechanism. During the head movement, the emulsion is controlled to flow into the head alignment assembly to adjust the head's direction of travel, ensuring that the overall direction of travel does not deviate. This solution uses emulsion as the working medium to control the relative movement of the telescopic frame and the head, thereby achieving mechanical control of the belt conveyor's telescopic movement. Compared with existing technologies, the telescopic mechanical control has high precision, allowing the belt conveyor to quickly follow the coal mining equipment in the fully mechanized mining face, improving coal mining efficiency, accelerating the coal mining progress, and increasing production efficiency. Furthermore, the entire process requires no close manual intervention, resulting in low safety risks, low labor intensity, and strong practicality, making it suitable for widespread promotion and application.

[0022] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 This is a control principle diagram of the emulsion control system for the telescopic belt conveyor according to a preferred embodiment of the present invention.

[0025] Legend:

[0026] 10. Power source assembly; 21. Ball valve one; 22. Filter structure; 23. Safety valve; 24. Ball valve two; 30. Flow direction control assembly; 41. Lifting cylinder; 42. Lifting regulating valve; 43. Lifting two-way lock; 51. Support cylinder; 52. Support regulating valve; 53. Support two-way lock; 61. Deviation cylinder; 62. Deviation regulating valve; 63. Deviation two-way lock; 71. Push cylinder; 72. Push regulating valve; 73. Push two-way lock. Detailed Implementation

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0028] like Figure 1 As shown, the emulsion control system for the telescopic belt conveyor in this embodiment includes two conveyor heads and a telescopic frame arranged between the two conveyor heads. The emulsion control system includes: a power source assembly 10 for providing and transmitting emulsion; a transfer and filtration assembly connected to the power source assembly 10 for transferring and filtering emulsion; a flow direction control assembly 30 connected to the transfer and filtration assembly for transferring and controlling the flow direction of emulsion; a conveyor head lifting assembly connected to the flow direction control assembly 30 for driving the conveyor head to rise and fall vertically, thereby driving the conveyor head closer to or away from the working surface; a conveyor head support assembly connected to the flow direction control assembly 30 for driving the support shoe to move, thereby increasing or decreasing the adhesion of the conveyor head, thereby driving the telescopic frame to move relative to the conveyor head; a conveyor head alignment assembly connected to the flow direction control assembly 30 for driving the conveyor head to move left and right, thereby adjusting the direction of travel of the conveyor head; and a conveyor head pushing assembly connected to the flow direction control assembly 30 for driving the telescopic frame to move back and forth relative to the conveyor head, or driving the conveyor head to move back and forth relative to the telescopic frame.

[0029] like Figure 1As shown, specifically, the emulsion control system for the belt conveyor telescopic movement of the present invention, when performing belt conveyor telescopic control, operates through the power source component 10 to provide and transmit emulsion to the transfer filtration component, which then transmits the emulsion to the flow direction control component 30, filtering the emulsion during the transmission process to prevent micro-solid impurities in the emulsion from accumulating in the execution component; firstly, the telescopic frame is controlled to move, and the flow direction control component 30 first controls the emulsion to flow into the head lifting component, which drives the head to descend vertically to contact the working face; then, the emulsion is controlled to flow into the head support component, driving the support shoe to abut against the top of the coal mining channel to increase the adhesion of the head; then, the emulsion is controlled to flow into the head pushing component, using the head as the force point to drive the telescopic frame to move back and forth relative to the head; then, the head is controlled to move, and the flow direction control component 30 first controls the emulsion to flow into the head... The head support assembly disengages the support shoe from the top of the coal mining channel. Then, emulsion flows into the head lifting assembly to raise the head vertically, moving it away from the working face. Finally, emulsion flows into the head pushing assembly to move the head back and forth relative to the telescopic mechanism. During this movement, emulsion is controlled to flow into the head alignment assembly to adjust the head's direction of travel, ensuring the overall direction remains consistent. This solution uses emulsion as the working medium to control the relative movement of the telescopic frame and the head, achieving mechanical control of the belt conveyor's telescopic movement. Compared to existing technologies, this method offers high precision in telescopic mechanical control, allowing the belt conveyor to quickly follow the coal mining equipment at the fully mechanized mining face, improving mining efficiency, accelerating the mining progress, and increasing production efficiency. Furthermore, it requires no close manual intervention, resulting in low safety risks, low labor intensity, and strong practicality, making it suitable for widespread promotion and application.

[0030] It should be understood that, in this embodiment, by using an emulsion as the working medium to transmit power, the working efficiency and stability of the control system can be improved, while energy consumption and environmental pollution can be reduced. It can also effectively transmit power and control signals, protect the control system from oxidation and corrosion, and extend the service life of the control system.

[0031] In this embodiment, the power source component 10 includes an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump. Specifically, the emulsion is stored in the emulsion tank, and the emulsion pump is driven by the drive motor to operate, so that the emulsion pump draws and pumps the emulsion from the emulsion tank to deliver the emulsion to the outside, thereby providing working power for the various components of the control system.

[0032] like Figure 1As shown, in this embodiment, the transfer filtration assembly includes an oil delivery filter for conveying and filtering emulsion, which is connected to the power source assembly 10 and the flow direction control assembly 30 respectively; a safety valve 23 for controlling the system pressure within a set range, which is connected to the oil delivery filter and the power source assembly 10 respectively; and an oil return assembly for emulsion return, which is connected to the power source assembly 10 and the flow direction control assembly 30 respectively.

[0033] like Figure 1 As shown, specifically, the emulsion is conveyed through the oil filter element, which also transmits working power. During the conveying process, the emulsion is filtered to prevent subsequent components from being damaged by impurities. At the same time, the pressure of the oil filter element is regulated by the safety valve 23. When the pressure of the oil filter element is within the set range, the safety valve 23 does not work; when the pressure of the oil filter element exceeds the set range, the safety valve 23 works to allow the emulsion to flow back to the power source component 10, thereby ensuring the stability of the control system pressure. The emulsion after work is returned to the power source component 10 through the oil return element. Thus, through the circulation of the emulsion, working power is transmitted, realizing the mechanical control of the extension and retraction of the belt conveyor.

[0034] like Figure 1 As shown, in this embodiment, the infusion filter includes an oil delivery pipeline connected to the power source assembly 10 and the flow direction control assembly 30, a ball valve 21 installed on the oil delivery pipeline for controlling the opening and closing of the oil delivery pipeline, and a filter structure 22 installed on the oil delivery pipeline. Specifically, during telescopic control, the ball valve 21 keeps the oil delivery pipeline open, and the emulsion pumped by the power source assembly 10 flows into the flow direction control assembly 30 through the oil delivery pipeline and is filtered by the filter structure 22 during the delivery process. When control is stopped, the ball valve 21 closes the oil delivery pipeline to avoid unnecessary losses caused by accidental control.

[0035] like Figure 1 As shown, optionally, the oil return component includes an oil return pipeline connected to the power source assembly 10 and the flow direction control assembly 30, respectively, and a ball valve 24 installed on the oil return pipeline. Specifically, during telescoping control, the ball valve 24 controls the return pipeline to be unobstructed, and the emulsion in the flow direction control assembly 30 can flow back to the power source assembly 10 through the return pipeline.

[0036] In this embodiment, the filter structure 22 includes a processing unit for conveying emulsion and filtering and depressurizing the emulsion, a return unit connected to the oil return component, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion in the processing unit, an unloading unit connected to the input end of the processing unit and the return unit for unloading the processing unit, a depressurizing unit connected to the output end of the processing unit and the return unit for depressurizing the processing unit, and a filter valve body that integrates the processing unit, the return unit, the reversing unit, the unloading unit and the depressurizing unit. Specifically, the processing unit, return unit, reversing unit, unloading unit, and pressure reducing unit are integrated into a single unit via a filter valve body to ensure a small overall size, making it suitable for use in emulsion control systems. The processing unit filters the emulsion and then delivers it to the flow direction control component 30. The reversing unit controls the flow direction of the emulsion within the processing unit, directing it towards the return unit or into the flow direction control component 30. This achieves both emulsion filtration and backwashing of the processing unit, ensuring efficient processing. The unit provides effective filtration; the processing unit can also depressurize the emulsion, and when the pressure at the output of the processing unit exceeds a set value, the emulsion in the processing unit flows into the return unit to depressurize the processing unit, thereby reducing the pressure of the emulsion flowing from the processing unit into the branch, thus achieving depressurization of the subsequent oil circuit and preventing damage to components connected to the subsequent oil circuit due to excessive pressure; during maintenance, the unloading unit allows the emulsion in the processing unit to flow into the return unit to unload the processing unit, thereby meeting maintenance requirements.

[0037] Optionally, the processing unit includes a processing pipeline, a control valve, a filter, and a pressure reducing valve. The emulsion is transported through the processing pipeline and then flows through the filter and the pressure reducing valve in sequence for filtration and pressure reduction.

[0038] Optionally, the reversing unit includes a logic reversing valve disposed between control valve one and filter one, a reversing pipeline connected to filter one and the logic reversing valve respectively, and a pilot control valve disposed on the reversing pipeline. Under normal operating conditions, the pilot control valve is not working. At this time, the logic reversing valve is connected to ball valve one 21 and filter one, and the processing unit delivers the emulsion to the flow control component 30. When backwashing of filter one is required, control valve one is closed, the pilot control valve is working, and the emulsion flows into the logic reversing valve through the reversing pipeline and the pilot control valve, so that the logic reversing valve is connected to filter one and the return unit, so that the emulsion in the processing pipeline flows in reverse through filter one and then flows to the return unit through the logic reversing valve, thereby realizing the backwashing of filter one.

[0039] Optionally, the pressure reducing unit includes a pressure reducing pipeline connected to the output end of the processing unit and the return unit respectively, and an unloading valve installed on the pressure reducing pipeline. Under normal conditions, the emulsion flowing into the pressure reducing pipeline is blocked by the unloading valve. When the pressure at the output end of the processing unit exceeds the set value, the unloading valve opens, so that the emulsion at the output end of the processing unit flows into the return unit through the unloading valve, thereby achieving unloading and pressure reduction.

[0040] Optionally, the unloading assembly includes an unloading pipeline connected to the input end of the processing unit and the return unit respectively, and a control valve two installed on the unloading pipeline. In the maintenance state, since the emulsion control system is a constant pressure network, the control valve one is closed and the control valve two is opened, so that the emulsion flows into the return unit through the unloading pipeline and then into the return oil component, thereby allowing disassembly and maintenance.

[0041] like Figure 1 As shown, in this embodiment, the flow direction control component 30 includes multiple electro-hydraulic directional valves arranged side by side. Specifically, by having multiple power directional valves work together, the flow direction of the emulsion is controlled, and thus, during operation, the emulsion can be delivered to the corresponding component according to the working requirements.

[0042] like Figure 1 As shown, in this embodiment, the machine head lifting assembly includes two lifting components, which are arranged corresponding to the machine head. Each lifting component includes a lifting cylinder 41 for driving the machine head to move vertically, a first lifting oil circuit that is connected to the rodless chamber of the lifting cylinder 41 and the flow direction control component 30, a second lifting oil circuit that is connected to the rod chamber of the lifting cylinder 41 and the flow direction control component 30, a lifting regulating valve 42 arranged on the second lifting oil circuit for adjusting the flow rate of the second lifting oil circuit, and a lifting bidirectional lock 43 connected to the first lifting oil circuit and the second lifting oil circuit for locking the lifting cylinder 41.

[0043] It should be understood that, since the belt conveyor has two heads, the lifting and lowering of the two heads are controlled by two lifting components respectively.

[0044] like Figure 1As shown, specifically, when the emulsion flows into the rodless chamber of the lifting cylinder 41 through the first lifting oil passage, the emulsion in the rod chamber of the lifting cylinder 41 flows back to the flow direction control component 30 through the second lifting oil passage, and the movable end of the lifting cylinder 41 extends to drive the machine head closer to the working surface; when the emulsion flows into the rod chamber of the lifting cylinder 41 through the second lifting oil passage, the emulsion in the rodless chamber of the lifting cylinder 41 flows back to the flow direction control component 30 through the first lifting oil passage, and the movable end of the lifting cylinder 41 contracts to drive the machine head away from the working surface; by adjusting the flow rate of the second lifting oil passage through the lifting regulating valve 42, the extension and retraction speed of the movable end of the lifting oil passage can be adjusted, improving the adjustment accuracy; when lifting adjustment is not required, the lifting two-way lock 43 operates to prevent the machine head lifting component from being accidentally activated, thus avoiding unnecessary hazards during operation.

[0045] like Figure 1 As shown, in this embodiment, the machine head support assembly includes two support members, which are arranged corresponding to the machine head. Each support member includes a support cylinder 51 for driving the support shoe to move, a first support oil passage connected to the rodless chamber of the support cylinder 51 and the flow direction control component 30, a second support oil passage connected to the rod chamber of the support cylinder 51 and the flow direction control component 30, a support regulating valve 52 arranged on the second support oil passage for adjusting the flow rate of the second support oil passage, and a support bidirectional lock 53 connected to the first and second support oil passages for locking the support cylinder 51.

[0046] It should be understood that, since the belt conveyor has two heads, two support members are used to ensure that each head has sufficient adhesion.

[0047] like Figure 1 As shown, specifically, when the emulsion flows into the rodless chamber of the support cylinder 51 through the first support oil passage, the emulsion in the rod chamber of the support cylinder 51 flows back to the flow direction control component 30 through the second support oil passage, and the movable end of the support cylinder 51 extends to drive the support shoe to the top of the coal mining channel; when the emulsion flows into the rod chamber of the support cylinder 51 through the second support oil passage, the emulsion in the rodless chamber of the support cylinder 51 flows back to the flow direction control component 30 through the first support oil passage, and the movable end of the support cylinder 51 contracts to drive the support shoe away from the top of the coal mining channel; by adjusting the flow rate of the second support oil passage through the support regulating valve 52, the extension and retraction speed of the movable end of the support oil passage can be adjusted, improving the adjustment accuracy; when support adjustment is not required, the support bidirectional lock 53 operates to prevent the machine head support assembly from being accidentally started, which could cause unnecessary harm during operation.

[0048] like Figure 1As shown, in this embodiment, the machine head alignment assembly includes two alignment components, which are arranged corresponding to the machine head. Each alignment component includes an alignment cylinder 61 for driving the machine head to move left and right, a first alignment oil circuit connected to the rodless chamber of the alignment cylinder 61 and the flow direction control component 30, a second alignment oil circuit connected to the rod chamber of the alignment cylinder 61 and the flow direction control component 30, an alignment regulating valve 62 arranged on the second alignment oil circuit for adjusting the flow rate of the second alignment oil circuit, and an alignment bidirectional lock 63 connected to the first and second alignment oil circuits for locking the alignment cylinder 61.

[0049] It should be understood that, since the belt conveyor has two heads, the travel direction of the two heads is controlled by two adjusting components.

[0050] like Figure 1 As shown, optionally, in one embodiment, the head adjustment assembly includes four adjustment components, with the four adjustment plates arranged in a rectangular pattern.

[0051] like Figure 1 As shown, specifically, when the emulsion flows into the rodless chamber of the adjusting cylinder 61 through the first adjusting oil path, the emulsion in the rod chamber of the adjusting cylinder 61 flows back to the flow direction control component 30 through the second adjusting oil path, and the movable end of the adjusting cylinder 61 extends to adjust the machine head to move in the first direction; when the emulsion flows into the rod chamber of the adjusting cylinder 61 through the second adjusting oil path, the emulsion in the rodless chamber of the adjusting cylinder 61 flows back to the flow direction control component 30 through the first adjusting oil path, and the movable end of the adjusting cylinder 61 contracts to drive the machine head to move in the second direction; by adjusting the flow rate of the second adjusting oil path through the adjusting valve 62, the extension and retraction speed of the movable end of the adjusting oil path can be adjusted, thereby improving the adjustment accuracy; when no adjusting is required, the adjusting bidirectional lock 63 operates to prevent the machine head adjusting component from being accidentally activated, thus avoiding unnecessary hazards during operation.

[0052] It should be understood that the head alignment component is connected to the corresponding head alignment mechanism on the belt conveyor so as to adjust the direction of travel of the head by adjusting the head alignment mechanism.

[0053] like Figure 1 As shown, in this embodiment, the machine head pushing assembly includes two pushing components, which are arranged corresponding to the machine head. Each pushing component includes a pushing cylinder 71 for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil passage connected to the rodless chamber of the pushing cylinder 71 and the flow direction control component 30, a second pushing oil passage connected to the rod chamber of the pushing cylinder 71 and the flow direction control component 30, a pushing regulating valve 72 arranged on the second pushing oil passage for adjusting the flow rate of the second pushing oil passage, and a pushing bidirectional lock 73 connected to the first pushing oil passage and the second pushing oil passage for locking the pushing cylinder 71.

[0054] It should be understood that, since the belt conveyor has two heads, the relative movement of the two heads and the telescopic frame is achieved by two pushing components, which increases the pushing force and ensures stable operation.

[0055] like Figure 1 As shown, specifically, when the emulsion flows into the rodless chamber of the push cylinder 71 through the first push oil passage, the emulsion in the rod chamber of the push cylinder 71 flows back to the flow direction control component 30 through the second push oil passage, and the movable end of the push cylinder 71 extends to adjust the machine head to move in the first direction; when the emulsion flows into the rod chamber of the push cylinder 71 through the second push oil passage, the emulsion in the rodless chamber of the push cylinder 71 flows back to the flow direction control component 30 through the first push oil passage, and the movable end of the push cylinder 71 contracts to drive the machine head to move in the second direction; by adjusting the flow rate of the second push oil passage through the push regulating valve 72, the extension and retraction speed of the movable end of the push oil passage can be adjusted, improving the adjustment accuracy; when push adjustment is not required, the push bidirectional lock 73 operates to prevent the machine head push component from being accidentally activated, thus avoiding unnecessary hazards during operation.

[0056] like Figure 1 As shown, in this embodiment, the working principle of the emulsion control system is as follows:

[0057] Opening ball valve 21 and ball valve 24 activates the drive motor, which in turn drives the emulsion pump to draw emulsion from the emulsion tank and deliver it to the oil pipeline. After passing through ball valve 21, filter structure 22, and safety valve 23, the emulsion is divided into two paths: one flows into the control system, and the other is blocked by safety valve 23. When the pressure in the oil pipeline is within the set range, safety valve 23 does not operate; when the pressure in the oil pipeline exceeds the set range, safety valve 23 operates, and the emulsion flows into the emulsion tank through safety valve 23, ensuring stable pressure in the control system.

[0058] The electro-hydraulic directional valve operates, controlling the emulsion to flow into the first lifting oil circuit. After flowing through the lifting two-way lock 43, it enters the rodless chamber of the lifting cylinder 41, so that the machine head contacts the working face. Then, the emulsion is controlled to flow into the first support oil circuit. After flowing through the support two-way lock 53, it enters the rodless chamber of the support cylinder 51, so that the support shoe extends and contacts the top of the coal mining face, ensuring that the machine head has sufficient adhesion to maintain stability. After the above actions are completed, the emulsion is controlled to flow into the machine head pushing assembly. After flowing through the pushing two-way lock 73, it enters the rodless chamber of the pushing cylinder 71, so as to drive the telescopic frame to move forward and stop after moving to the set working position.

[0059] The electro-hydraulic directional valve operates, controlling the emulsion to flow into the second support oil circuit. After flowing through the support double-lock 53, it enters the rod chamber of the support cylinder 51 to retract the support shoe. Then, the emulsion is controlled to flow into the second lifting oil circuit. After flowing through the lifting double-lock 43, it enters the rod chamber of the lifting cylinder 41 to separate the machine head from the working surface. After the above actions are completed, the emulsion is controlled to flow into the machine head pushing assembly to drive the machine head forward.

[0060] When retracting the frame or moving the machine head backward, simply perform the opposite operation; therefore, we will not elaborate further.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A control system for an emulsion used in a telescopic belt conveyor, the belt conveyor comprising two heads and a telescopic frame disposed between the two heads, characterized in that... The emulsion control system includes: A power source assembly (10) for supplying and transporting the emulsion; A transfer filter assembly, connected to the power source assembly (10), is used to transfer and filter the emulsion; A flow control component (30), connected to a transfer filter component, is used to transfer and control the flow direction of the emulsion; The machine head lifting assembly is connected to the flow direction control assembly (30) and is used to drive the machine head to rise and fall vertically, thereby driving the machine head to move closer to or away from the working surface; The machine head support assembly is connected to the flow direction control assembly (30) and is used to drive the support shoe to move, thereby increasing or decreasing the adhesion of the machine head, and thus driving the telescopic frame to move relative to the machine head; The head tilting component is connected to the flow direction control component (30) and is used to drive the head to move left and right to adjust the direction of the head's travel; The machine head pushing assembly is connected to the flow direction control assembly (30) and is used to drive the telescopic frame to move back and forth relative to the machine head, or to drive the machine head to move back and forth relative to the telescopic frame. The transfer filtration assembly includes an oil delivery filter for conveying and filtering emulsion, which is connected to the power source assembly (10) and the flow direction control assembly (30) respectively; a safety valve (23) for controlling the system pressure within a set range, which is connected to the oil delivery filter and the power source assembly (10) respectively; and an oil return assembly for emulsion return, which is connected to the power source assembly (10) and the flow direction control assembly (30) respectively. The oil supply filter includes an oil supply pipeline connected to the power source assembly (10) and the flow direction control assembly (30) respectively, a ball valve (21) installed on the oil supply pipeline for controlling the opening and closing of the oil supply pipeline, and a filter structure (22) installed on the oil supply pipeline. The filter structure (22) includes a processing unit for conveying emulsion and filtering and depressurizing the emulsion, a return unit connected to the return oil component, a reversing unit connected to the processing unit for controlling the flow direction of the emulsion in the processing unit, an unloading unit connected to the input end of the processing unit and the return unit for unloading the processing unit, a depressurizing unit connected to the output end of the processing unit and the return unit for depressurizing the processing unit, and a filter valve body that integrates the processing unit, the return unit, the reversing unit, the unloading unit and the depressurizing unit.

2. The emulsion control system for the telescopic belt conveyor according to claim 1, characterized in that, The machine head lifting assembly includes two lifting components, which are arranged corresponding to the machine head. The lifting components include a lifting cylinder (41) for driving the machine head to lift vertically, a first lifting oil circuit that is connected to the rodless chamber of the lifting cylinder (41) and the flow direction control component (30) respectively, a second lifting oil circuit that is connected to the rod chamber of the lifting cylinder (41) and the flow direction control component (30) respectively, a lifting regulating valve (42) arranged on the second lifting oil circuit for adjusting the flow of the second lifting oil circuit, and a lifting two-way lock (43) connected to the first lifting oil circuit and the second lifting oil circuit for locking the lifting cylinder (41).

3. The emulsion control system for the telescopic belt conveyor according to claim 1, characterized in that, The machine head support assembly includes two support components, which are arranged corresponding to the machine head. Each support component includes a support cylinder (51) for driving the support shoe to move, a first support oil circuit that is connected to the rodless chamber of the support cylinder (51) and the flow direction control component (30) respectively, a second support oil circuit that is connected to the rod chamber of the support cylinder (51) and the flow direction control component (30) respectively, a support regulating valve (52) arranged on the second support oil circuit for adjusting the flow rate of the second support oil circuit, and a support double lock (53) connected to the first support oil circuit and the second support oil circuit for locking the support cylinder (51).

4. The emulsion control system for the telescopic belt conveyor according to claim 1, characterized in that, The machine head alignment assembly includes two alignment components, which are arranged to correspond with the machine head. The alignment components include an alignment cylinder (61) for driving the machine head to move left and right, a first alignment oil circuit that is connected to the rodless chamber of the alignment cylinder (61) and the flow direction control component (30) respectively, a second alignment oil circuit that is connected to the rod chamber of the alignment cylinder (61) and the flow direction control component (30) respectively, an alignment regulating valve (62) arranged on the second alignment oil circuit for adjusting the flow of the second alignment oil circuit, and an alignment bidirectional lock (63) connected to the first alignment oil circuit and the second alignment oil circuit for locking the alignment cylinder (61).

5. The emulsion control system for a telescopic belt conveyor according to claim 1, characterized in that, The machine head pushing assembly includes two pushing components, which are arranged corresponding to the machine head. The pushing components include a pushing cylinder (71) for driving the machine head and the telescopic frame to move relative to each other, a first pushing oil circuit that is connected to the rodless chamber of the pushing cylinder (71) and the flow direction control component (30) respectively, a second pushing oil circuit that is connected to the rod chamber of the pushing cylinder (71) and the flow direction control component (30) respectively, a pushing regulating valve (72) arranged on the second pushing oil circuit for adjusting the flow rate of the second pushing oil circuit, and a pushing bidirectional lock (73) connected to the first pushing oil circuit and the second pushing oil circuit respectively for locking the pushing cylinder (71).

6. The emulsion control system for a telescopic belt conveyor according to any one of claims 1-5, characterized in that, The flow control assembly (30) includes multiple electro-hydraulic directional valves arranged side by side.

7. The emulsion control system for a telescopic belt conveyor according to any one of claims 1-5, characterized in that, The power source assembly (10) includes an emulsion tank, an emulsion pump connected to the emulsion tank, and a drive motor connected to the emulsion pump.

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