Integrated valve and hydraulic support

Abstract

The utility model provides a kind of integrated valve and hydraulic support, it is related to hydraulic support technical field.Integrated valve is used for hydraulic support, and hydraulic support includes plugboard, plugboard can extend or retract, integrated valve includes: base body;Check valve is arranged in base body;Spray valve is arranged in base body;Hydraulic oil passage is located in base body, and is communicated with the oil inlet of one of check valve and spray valve;Wherein, when plugboard extends, spray valve is closed, when plugboard retracts, hydraulic oil enters spray valve by hydraulic oil passage, to open spray valve.Spray function is triggered by the hydraulic oil passage built-in integrated valve, the linkage control of plugboard action and spray function is realized, and additional electric control signal or sensor is not needed.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology, and more specifically, to an integrated valve and a hydraulic support. Background Technology

[0002] In coal mining, hydraulic supports for top coal caving are key equipment in fully mechanized longwall faces. The tail end of the support beam typically requires a slide gate control valve and a dust suppression spray valve to control the extension and retraction of the slide gate, as well as the dust suppression function. Currently, the commonly used practice is as follows: Figure 5 As shown, the one-way valve 11' and spray valve 12' of the slide gate are installed side-by-side as two independent valve bodies at the tail of the shield beam. However, the traditional side-by-side installation method has obvious limitations. The width of the structure at the tail of the shield beam is insufficient to accommodate two side-by-side valve bodies, resulting in installation difficulties or even making installation impossible. In addition, the existing valve bodies cannot achieve linkage control between the slide gate action and the spray function.

[0003] Therefore, how to propose an integrated valve that can significantly reduce installation space and achieve linkage control of the gate action and spray function has become an urgent problem to be solved. Utility Model Content

[0004] This utility model proposes an integrated valve and hydraulic support, which solves the problems in related technologies such as limited installation space for integrated valves and the inability to link the action of the slide gate with the spray function.

[0005] Therefore, the first objective of this utility model is to provide an integrated valve.

[0006] The first objective of this invention is to provide a hydraulic support.

[0007] In view of the above, the first aspect of the present invention provides an integrated valve for a hydraulic support. The hydraulic support includes a slide plate that can extend or retract. The integrated valve includes: a base; a check valve disposed within the base; a spray valve disposed within the base; and a hydraulic oil passage disposed within the base and connecting one of the oil inlets of the check valve to the spray valve. When the slide plate extends, the spray valve is closed; when the slide plate retracts, hydraulic oil enters the spray valve through the hydraulic oil passage to open the spray valve.

[0008] According to the integrated valve proposed in this utility model, specifically, the integrated valve includes a base, a check valve, a spray valve, and a hydraulic oil passage. The base serves as the mounting carrier; the check valve is disposed inside the base to control the unidirectional flow of hydraulic oil; the spray valve is also disposed within the base to control the opening and closing of the water circuit; the hydraulic oil passage connects one of the inlets of the check valve to the control section of the spray valve. Therefore, the integrated valve is a compact hydraulic control device specifically designed for top-coal caving hydraulic supports, integrating the originally parallel-installed slide gate check valve and spray valve into a single base, achieving functional linkage through the internal oil passage.

[0009] The integrated valve's technical principle is based on automatically controlling the opening and closing of the spray valve by the flow direction of hydraulic oil, thereby achieving linkage with the mechanical movement of the slide gate. When the slide gate needs to extend, hydraulic oil enters from the main inlet of the check valve and pushes it to move, completing the extension function. During this process, since the hydraulic oil passage is connected to another inlet of the check valve, no pressurized oil passes through this oil circuit, so the spray valve remains closed and cannot spray. When the slide gate needs to retract, the flow direction of the hydraulic oil changes, and some pressurized oil enters the spray valve through the hydraulic oil passage. The hydraulic oil acts on the control end of the spray valve, overcoming its internal resistance, thereby driving the spray valve to open, connecting the water circuit, and realizing automatic spraying. Therefore, this application triggers the spray function through the integrated valve's built-in hydraulic oil passage, realizing the linkage control of the slide gate movement and the spray function, without the need for additional electrical control signals or sensors.

[0010] Meanwhile, by integrating the check valve and spray valve into a single unit and replacing complex external piping connections with internal hydraulic oil channels, the overall valve body size is significantly reduced. This solves the problem of not being able to install two independent valve assemblies side-by-side due to limited installation space, improving the overall layout adaptability and design flexibility of the product. Furthermore, the integrated valve links the slide gate retraction and spray function, automating the dust suppression process and ensuring timely and effective operation.

[0011] Optionally, in some embodiments, the check valve includes: a first push rod slidably disposed within the check valve and dividing the check valve into a first chamber and a second chamber; a first spring disposed within the first chamber; wherein one end of the hydraulic oil passage is connected to the oil inlet of the first chamber.

[0012] In this embodiment, by refining the internal structure of the one-way valve into a first chamber and a second chamber separated by a first push rod, and by installing a first spring in the first chamber, while connecting the hydraulic oil passage to the oil inlet of the first chamber, a more precise and reliable hydraulic control effect is achieved, and the flow path of the hydraulic oil becomes clearer and more controllable. When the hydraulic oil enters the first chamber, it can directly act on the first push rod and overcome the resistance of the first spring, causing the slide gate to retract in time. At the same time, the hydraulic oil enters the hydraulic oil passage, thereby providing a stable and timely pressure signal for the opening and closing of the spray valve, ensuring the reliability of the linkage between slide gate retraction and immediate spray opening. In addition, integrating the hydraulic oil passage inside the base effectively avoids the leakage risks and structural complexity that may be caused by external pipeline connections, significantly improving the sealing performance and service life of the integrated valve.

[0013] Optionally, in some embodiments, the spray valve includes: a spray valve seat; an inlet disposed on the spray valve seat; an outlet disposed on the spray valve seat; a valve core disposed within the spray valve seat for isolating the inlet and the outlet; and a drive control end disposed within the spray valve seat, the other end of which is connected to the drive control end, the drive control end being used to drive the valve core to connect the inlet and the outlet.

[0014] In this embodiment, the inlet, outlet, valve core, and drive control terminal are integrated into the spray valve seat, achieving a highly compact, integrated layout. The spray valve significantly reduces the number of external connecting pipes and joints. The drive control terminal is not connected to the inlet or outlet, effectively reducing the risk of hydraulic oil leakage and improving the overall sealing reliability and service life of the spray valve. Simultaneously, the drive control terminal ensures that the opening and closing actions of the spray valve are synchronized with the pressure changes of the hydraulic system, achieving automated control of the slide gate retraction and spraying functions, greatly improving work efficiency and operational convenience.

[0015] In some embodiments, the spray valve is a ball valve, which provides good sealing performance and water flow control characteristics, ensuring that the inlet and outlet can be completely isolated when the spray valve is closed, preventing water leakage and ensuring the uniformity and stability of the spray effect.

[0016] Optionally, in some embodiments, the integrated valve further includes: a first oil inlet disposed on the base; a first oil outlet disposed on the base; wherein the first oil inlet, the first oil outlet and the second chamber are connected, hydraulic oil enters the second chamber from the first oil inlet, the first push rod moves toward the direction of the first spring to drive the slide plate to extend, and the spray valve is in the closed state.

[0017] In this embodiment, a first oil inlet and a first oil outlet are provided on the substrate. Both ports are connected to the second chamber of a one-way valve, forming a complete hydraulic oil circulation system. The first oil inlet serves as the inlet for pressurized oil, and the first oil outlet serves as the outlet for return oil, providing a dedicated hydraulic control channel for the extension of the slide block. Specifically, when hydraulic oil enters the second chamber from the first oil inlet, the oil pressure directly acts on the first push rod, pushing it to move in the direction of compressing the first spring. The slide block is driven to perform the extension operation through hydraulic transmission. At the same time, since the oil circuit where the hydraulic oil channel is located is in a non-working state at this time, the spray valve remains closed, ensuring that no accidental spraying occurs during the extension of the slide block. Furthermore, the integrated valve is suitable for installation environments with limited space for hydraulic supports, solving the installation problem of narrow space at the tail of the top coal caving support shield beam.

[0018] Optionally, in some embodiments, the integrated valve further includes: a second oil inlet disposed on the base and connected to a hydraulic oil passage; and a second oil outlet disposed on the base; wherein the second oil inlet, the second oil outlet, and the first chamber are connected, hydraulic oil enters the first chamber from the second oil inlet, the first push rod moves away from the first spring to drive the slide plate to retract, and the spray valve is in the conducting state.

[0019] In this embodiment, a second oil inlet and a second oil outlet are also provided on the base, forming a complete slide gate retraction control hydraulic circuit system. The second oil inlet is directly connected to the hydraulic oil channel, and the second oil outlet is connected to the first chamber, ensuring smooth and efficient hydraulic oil flow while maintaining the compactness of the valve body structure. Specifically, when hydraulic oil enters the first chamber from the second oil inlet, the oil pressure pushes the first push rod to move away from the first spring, directly driving the slide gate to perform the retraction function. At the same time, some hydraulic oil is led to the drive control end of the spray valve through the hydraulic oil channel. That is, the hydraulic oil entering the first chamber not only completes the slide gate retraction function, but also transmits the pressure signal to the spray valve through the built-in hydraulic oil channel, causing the spray valve to switch to the open state. It can be seen that the integrated valve realizes the synchronization of slide gate retraction and spray opening and closing, greatly improving the spray response speed, while reducing external control components and simplifying the structure of the integrated valve.

[0020] Optionally, in some embodiments, the central axis of the one-way valve is coaxial with the central axis of the spray valve.

[0021] In this embodiment, the check valve and spray valve are arranged coaxially, meaning the central axis of the check valve and the central axis of the spray valve are completely coincident. This coaxial layout arranges the two functional valves sequentially along the same axis within the valve body, making the integrated valve layout more compact. Therefore, the coaxial design of the check valve and spray valve maximizes the utilization of space within the valve body, significantly reducing the overall size of the valve body compared to traditional parallel or staggered layouts. The coaxial structure also reduces the width of the valve body by 35mm.

[0022] In addition, the coaxial arrangement of the check valve and spray valve makes the flow path of hydraulic oil in the valve body smoother, reduces flow channel bends and pressure loss, and ensures that hydraulic oil can be quickly and smoothly transmitted between the check valve and spray valve, improving the response speed and operational reliability of the slide gate action and spray function.

[0023] Optionally, in some embodiments, the integrated valve further includes: at least two positioning mounting holes disposed on the base; and a positioning element that mates with the positioning mounting holes for mounting the integrated valve on a hydraulic support.

[0024] In this embodiment, at least two positioning mounting holes are provided on the base of the integrated valve, and these holes mate with positioning components. Positioning components include bolts, pins, etc. The mating design of the positioning mounting holes and positioning components provides extremely high installation stability. The multi-point positioning structure effectively prevents the integrated valve from shifting or rotating during operation, ensuring the accuracy of port connection and sealing reliability. Therefore, through multi-point positioning installation, the connection between the integrated valve and the hydraulic support is more robust and reliable, effectively avoiding loosening or leakage of joints due to vibration. This not only improves the working stability of the individual valve body but also enhances the safety and service life of the entire hydraulic support, providing an important guarantee for the reliable operation of the hydraulic support.

[0025] Based on the same technical concept, the second aspect of this utility model provides a hydraulic support, including the integrated valve as proposed in the first aspect. Therefore, the hydraulic support incorporates all the beneficial effects of the integrated valve proposed in the first aspect, which will not be elaborated further here.

[0026] Optionally, in some embodiments, the hydraulic support is a top coal caving hydraulic support.

[0027] Optionally, in some embodiments, the hydraulic support further includes: a shield beam including an installation area, wherein the integrated valve is disposed within the installation area; a water tank connected to the inlet of the integrated valve; and a nozzle connected to the outlet of the integrated valve.

[0028] In this embodiment, the hydraulic support includes a shield beam with a specific mounting area for installing the integrated valve. Placing the integrated valve within the mounting area of ​​the shield beam optimizes space utilization. The shape and size of the mounting area match the base of the integrated valve, ensuring the valve can be securely installed in the predetermined position and effectively resist vibration and impact during operation.

[0029] The hydraulic support also includes a water tank and nozzles. The water tank, acting as a water storage device, is connected to the inlet of the integrated valve via a pipeline, providing a continuous water supply to the spray system. The outlet of the integrated valve is connected to the nozzles via another pipeline, forming a complete water flow path. When the spray valve is opened, water can quickly flow from the water tank through the integrated valve to the nozzles, achieving timely and effective dust suppression.

[0030] Optionally, in some embodiments, the hydraulic support further includes a cylinder and a slide plate. The cylinder is used to drive the slide plate to extend or retract. The cylinder includes: a rodless chamber, which connects the first oil inlet and the first oil outlet of the integrated valve; and a rod chamber, which connects the second oil inlet and the second oil outlet of the integrated valve.

[0031] In this embodiment, the hydraulic support also includes a cylinder and a slide block, meaning the hydraulic support uses the cylinder as the drive core to control the extension and retraction of the slide block. The cylinder includes a rod chamber and a rodless chamber. When pressurized oil enters the rodless chamber from the first inlet, it generates a strong thrust to push the piston rod out, thereby driving the slide block to perform the extension action. When pressurized oil enters the rod chamber from the second inlet, it pushes the piston rod back, driving the slide block to complete the retraction operation. Therefore, this application adopts a dual-circuit design, ensuring independent control and reliable execution in two directions of motion. Simultaneously, the hydraulic oil channel inside the integrated valve enables automatic triggering of the spray function when the slide block retracts. The combined use of the cylinder and the integrated valve ensures the accuracy and response speed of the slide block's movement, making it particularly suitable for operating conditions like top coal caving hydraulic supports where strict timing requirements are necessary.

[0032] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is one of the structural schematic diagrams of an integrated valve provided in one embodiment of this utility model; Figure 2 This is a schematic diagram illustrating the working principle of an integrated valve according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of a hydraulic support according to an embodiment of the present invention; Figure 4 This is a second schematic diagram of the structure of the integrated valve provided in one embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of a check valve and a spray valve in the prior art.

[0035] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1 Integrated valve, 10 Base, 11 Check valve, 111 First push rod, 112 First chamber, 113 Second chamber, 114 First spring, 12 Spray valve, 121 Spray valve seat, 122 Inlet, 123 Outlet, 124 Valve core, 125 Drive control end, 13 Hydraulic oil passage, 14 First oil inlet, 15 First oil outlet, 16 Second oil inlet, 17 Second oil outlet, 18 Positioning mounting hole, 19 Positioning component, 100 Hydraulic support, 2 Insert plate, 3 Protective beam, 31 Installation area, 4 Water tank, 5 Nozzle, 6 Oil cylinder, 61 Rodless chamber, 62 Rod chamber, 7 Reversing assembly, 11` Check valve, 12` Spray valve. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] An embodiment of the first aspect of this utility model provides an integrated valve 1, such as... Figure 1 , Figure 2 and Figure 3 As shown, the integrated valve 1 is used in the hydraulic support 100. The hydraulic support 100 includes a slide plate 2, which can extend or retract. The integrated valve 1 includes: a base 10; a check valve 11 disposed within the base 10; a spray valve 12 disposed within the base 10; and a hydraulic oil passage 13 disposed within the base 10 and connecting one of the oil inlets of the check valve 11 to the spray valve 12. When the slide plate 2 extends, the spray valve 12 is closed. When the slide plate 2 retracts, hydraulic oil enters the spray valve 12 through the hydraulic oil passage 13 to open the spray valve 12.

[0038] According to the integrated valve 1 proposed in this utility model, specifically, the integrated valve 1 includes a base 10, a one-way valve 11, a spray valve 12, and a hydraulic oil passage 13. The base 10 serves as the mounting carrier. The one-way valve 11 is disposed inside the base 10 to control the unidirectional flow of hydraulic oil. The spray valve 12 is also disposed inside the base 10 to control the opening and closing of the water circuit. The hydraulic oil passage 13 connects one of the oil inlets of the one-way valve 11 with the control part of the spray valve 12. Therefore, the integrated valve 1 is a compact hydraulic control device specifically designed for top coal caving hydraulic supports. It integrates the one-way valve 11 and spray valve 12, which originally needed to be installed side-by-side, into a single base 10, achieving functional linkage through the internal oil passage.

[0039] The technical principle of the integrated valve 1 is based on the automatic control of the opening and closing of the spray valve 12 by the flow direction of hydraulic oil, thereby achieving linkage with the mechanical action of the slide gate 2. When the slide gate 2 needs to extend, hydraulic oil enters from the main inlet of the check valve 11 and pushes it to move, completing the extension function. During this process, since the hydraulic oil passage 13 is connected to another inlet of the check valve 11, no pressurized oil passes through this oil circuit, so the spray valve 12 remains closed and cannot spray. When the slide gate 2 needs to retract, the flow direction of the hydraulic oil changes, and some pressurized oil enters the spray valve 12 through the hydraulic oil passage 13. The hydraulic oil acts on the control end of the spray valve 12, overcoming its internal resistance, thereby driving the spray valve 12 to open, connecting the water circuit, and realizing automatic spraying. Therefore, this application uses the hydraulic oil passage 13 built into the integrated valve 1 to trigger the spray function, realizing the linkage control of the slide gate 2 action and the spray function, without the need to set up additional electrical control signals or sensors.

[0040] Meanwhile, by integrating the one-way valve 11 and the spray valve 12 into a single base 10, and using the internal hydraulic oil channel 13 to replace complex external piping connections, the overall structural size of the valve body is significantly reduced. This solves the problem of not being able to install two independent valve assemblies side-by-side due to limited installation space, improving the overall layout adaptability and design flexibility of the product. Furthermore, the integrated valve 1 retracts the slide gate 2 and links it with the spray function, automating the dust suppression process and ensuring timely and effective operation.

[0041] Alternatively, in some embodiments, such as Figure 1 and Figure 4 As shown, the one-way valve 11 includes: a first push rod 111, which is slidably disposed in the one-way valve 11 and divides the one-way valve 11 into a first chamber 112 and a second chamber 113; a first spring 114, which is disposed in the first chamber 112; wherein, one end of the hydraulic oil passage 13 is connected to the oil inlet of the first chamber 112.

[0042] In this embodiment, by refining the internal structure of the one-way valve 11 into a first chamber 112 and a second chamber 113 separated by a first push rod 111, and by installing a first spring 114 in the first chamber 112, while connecting the hydraulic oil passage 13 to the oil inlet of the first chamber 112, a more precise and reliable hydraulic control effect is achieved, and the flow path of the hydraulic oil is made clearer and more controllable. When the hydraulic oil enters the first chamber 112, it can directly act on the first push rod 111 and overcome the resistance of the first spring 114, causing the slide plate 2 to retract in time. At the same time, the hydraulic oil enters the hydraulic oil passage 13, thereby providing a stable and timely pressure signal for the opening and closing of the spray valve 12, ensuring the reliability of the linkage between the retraction of the slide plate 2 and the immediate opening of the spray. In addition, integrating the hydraulic oil passage 13 inside the base 10 effectively avoids the leakage risk and structural complexity that may be caused by external pipeline connections, and significantly improves the sealing performance and service life of the integrated valve 1.

[0043] Alternatively, in some embodiments, such as Figure 1 and Figure 4 As shown, the spray valve 12 includes: a spray valve seat 121; an inlet 122 disposed on the spray valve seat 121; an outlet 123 disposed on the spray valve seat 121; a valve core 124 disposed within the spray valve seat 121 for isolating the inlet 122 and the outlet 123; and a drive control terminal 125 disposed within the spray valve seat 121. The other end of the hydraulic oil passage 13 is connected to the drive control terminal 125, which drives the valve core 124 to connect the inlet 122 and the outlet 123.

[0044] In this embodiment, the inlet 122, outlet 123, valve core 124, and drive control terminal 125 are integrated into the spray valve seat 121, achieving a highly compact integrated layout. The spray valve 12 significantly reduces the number of external connecting pipes and joints. The drive control terminal 125 is not connected to the inlet 122 or outlet 123, effectively reducing the risk of hydraulic oil leakage and improving the sealing reliability and service life of the entire spray valve 12. Simultaneously, the drive control terminal 125 ensures that the opening and closing actions of the spray valve 12 are synchronized with the pressure changes of the hydraulic system, achieving automated control of the slide gate 2 retraction and spraying functions, greatly improving work efficiency and operational convenience.

[0045] In some embodiments, the spray valve 12 is a ball valve, which provides good sealing performance and water flow control characteristics, ensuring that the inlet 122 and outlet 123 can be completely isolated when the spray valve 12 is closed, preventing water leakage and ensuring the uniformity and stability of the spray effect.

[0046] Alternatively, in some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the integrated valve 1 also includes: a first oil inlet 14, which is disposed on the base 10; and a first oil outlet 15, which is disposed on the base 10; wherein the first oil inlet 14, the first oil outlet 15 and the second chamber 113 are connected, and hydraulic oil enters the second chamber 113 from the first oil inlet 14. The first push rod 111 moves toward the first spring 114 to drive the insert plate 2 to extend, and the spray valve 12 is in the closed state.

[0047] In this embodiment, the base 10 is provided with a first oil inlet 14 and a first oil outlet 15, both of which are connected to the second chamber 113 of the one-way valve 11, forming a complete hydraulic oil circulation system. The first oil inlet 14 serves as the inlet for pressurized oil, and the first oil outlet 15 serves as the outlet for return oil, providing a dedicated hydraulic control channel for the extension action of the slide plate 2. Specifically, when hydraulic oil enters the second chamber 113 from the first oil inlet 14, the oil pressure directly acts on the first push rod 111, pushing it to move in the direction of compressing the first spring 114. The slide plate 2 is driven to perform the extension operation through hydraulic transmission. At the same time, since the oil circuit where the hydraulic oil channel 13 is located is in a non-working state at this time, the spray valve 12 remains closed, ensuring that no accidental spraying occurs during the extension of the slide plate 2. Meanwhile, the integrated valve 1 is suitable for the installation environment of the hydraulic support 100 with limited space, solving the installation problem of the narrow space at the tail of the top coal caving support shield beam 3.

[0048] Alternatively, in some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the integrated valve 1 also includes: a second oil inlet 16, which is disposed on the base 10 and is connected to the hydraulic oil passage 13; and a second oil outlet 17, which is disposed on the base 10. The second oil inlet 16, the second oil outlet 17 and the first chamber 112 are connected. Hydraulic oil enters the first chamber 112 from the second oil inlet 16. The first push rod 111 moves away from the first spring 114 to drive the slide plate 2 to retract, and the spray valve 12 is in the conducting state.

[0049] In this embodiment, the base 10 is further provided with a second oil inlet 16 and a second oil outlet 17, forming a complete hydraulic circuit system for the retraction control of the slide plate 2. The second oil inlet 16 is directly connected to the hydraulic oil channel 13, and the second oil outlet 17 is connected to the first chamber 112, ensuring smooth and efficient hydraulic oil flow while maintaining the compactness of the valve body structure. Specifically, when hydraulic oil enters the first chamber 112 from the second oil inlet 16, the oil pressure pushes the first push rod 111 to move away from the first spring 114, directly driving the slide plate 2 to perform the retraction function. At the same time, some hydraulic oil is led to the drive control end 125 of the spray valve 12 through the hydraulic oil channel 13. That is, the hydraulic oil entering the first chamber 112 not only completes the retraction function of the slide plate 2, but also transmits the pressure signal to the spray valve 12 through the built-in hydraulic oil channel 13, causing the spray valve 12 to switch to the open state. As can be seen, the integrated valve 1 achieves synchronization between the retraction of the slide gate 2 and the opening and closing of the spray, which greatly improves the response speed of the spray and reduces the number of external control components, thus simplifying the structure of the integrated valve 1.

[0050] Alternatively, in some embodiments, such as Figure 1 As shown, the central axis of the one-way valve 11 is coaxial with the central axis of the spray valve 12.

[0051] In this embodiment, the one-way valve 11 and the spray valve 12 are arranged coaxially, meaning that the central axis of the one-way valve 11 and the central axis of the spray valve 12 are completely coincident. This coaxial layout arranges the two functional valves sequentially along the same axis within the base 10, making the integrated valve 1 more compact. Therefore, the coaxial design of the one-way valve 11 and the spray valve 12 maximizes the utilization of space within the valve body, significantly reducing the overall size of the valve body compared to traditional parallel or staggered layouts. The coaxial structure also reduces the width of the valve body by 35mm.

[0052] In addition, the coaxial arrangement of the check valve 11 and the spray valve 12 makes the flow path of hydraulic oil in the valve body smoother, reduces flow channel bends and pressure loss, and ensures that hydraulic oil can be transmitted quickly and smoothly between the check valve 11 and the spray valve 12, thereby improving the response speed and operational reliability of the slide gate 2's action and spray function.

[0053] Alternatively, in some embodiments, such as Figure 1 and Figure 4 As shown, the integrated valve 1 also includes: at least two positioning mounting holes 18 disposed on the base 10; and a positioning element 19 that cooperates with the positioning mounting holes 18 for mounting the integrated valve 1 on the hydraulic support 100.

[0054] In this embodiment, at least two positioning mounting holes 18 are provided on the base 10 of the integrated valve 1, and the mounting holes cooperate with positioning elements 19. Positioning elements 19 include bolts, pins, etc. The cooperative design of the positioning mounting holes 18 and positioning elements 19 provides extremely high installation stability. The multi-point positioning structure effectively prevents the integrated valve 1 from shifting or rotating during operation, ensuring the accuracy of the oil port connection and the reliability of the seal. Therefore, through multi-point positioning installation, the connection between the integrated valve 1 and the hydraulic support 100 is more robust and reliable, effectively avoiding loosening or leakage of the joints due to vibration. This not only improves the working stability of the individual valve body but also enhances the safety and service life of the entire hydraulic support 100, providing an important guarantee for the reliable operation of the hydraulic support 100.

[0055] Based on the same technological concept, such as Figure 3 As shown, an embodiment of the second aspect of this utility model provides a hydraulic support 100, including the integrated valve 1 as proposed in the embodiment of the first aspect. Therefore, the hydraulic support 100 includes all the beneficial effects of the integrated valve 1 proposed in the first aspect, which will not be repeated here.

[0056] Optionally, in some embodiments, the hydraulic support 100 is a top coal caving hydraulic support.

[0057] Alternatively, in some embodiments, such as Figure 2 and Figure 3 As shown, the hydraulic support 100 also includes: a shield beam 3, including an installation area 31, in which the integrated valve 1 is located; a water tank 4, connected to the inlet 122 of the integrated valve 1; and a nozzle 5, connected to the outlet 123 of the integrated valve 1.

[0058] In this embodiment, the hydraulic support 100 includes a shield beam 3, on which a specific mounting area 31 is provided for mounting the integrated valve 1. Placing the integrated valve 1 within the mounting area 31 of the shield beam 3 optimizes space utilization. The shape and size of the mounting area 31 match the base 10 of the integrated valve 1, ensuring that the integrated valve 1 can be securely installed in the predetermined position and effectively resist vibration and impact during operation.

[0059] The hydraulic support 100 also includes a water tank 4 and nozzles 5. The water tank 4 serves as a water storage device and is connected to the inlet 122 of the integrated valve 1 via a pipeline to provide a continuous water supply to the spray system. The outlet 123 of the integrated valve 1 is connected to the nozzles 5 via another pipeline, forming a complete water flow path. When the spray valve 12 is opened, water can quickly flow from the water tank 4 through the integrated valve 1 to the nozzles 5, achieving timely and effective dust suppression.

[0060] Alternatively, in some embodiments, such as Figure 2 and Figure 3As shown, the hydraulic support 100 also includes a cylinder 6 and a slide plate 2. The cylinder 6 is used to drive the slide plate 2 to extend or retract. The cylinder 6 includes: a rodless chamber 61, which connects the first oil inlet 14 and the first oil outlet 15 of the integrated valve 1; and a rod chamber 62, which connects the second oil inlet 16 and the second oil outlet 17 of the integrated valve 1.

[0061] In this embodiment, the hydraulic support 100 also includes a cylinder 6 and a slide plate 2. That is, the hydraulic support 100 uses the cylinder 6 as the driving core to control the extension and retraction of the slide plate 2. The cylinder 6 includes a rod chamber 62 and a rodless chamber 61. When pressurized oil enters the rodless chamber 61 from the first inlet 14, it generates a strong thrust to push the piston rod out, thereby driving the slide plate 2 to perform the extension action. When pressurized oil enters the rod chamber 62 from the second inlet 16, it pushes the piston rod back, driving the slide plate 2 to complete the retraction operation. It can be seen that this application adopts a dual-circuit design, ensuring independent control and reliable execution of the two action directions. Simultaneously, the hydraulic oil channel 13 inside the integrated valve 1 enables automatic triggering of the spray function when the slide plate 2 retracts. The combined use of the cylinder 6 and the integrated valve 1 ensures the accuracy and response speed of the slide plate 2's action, making it particularly suitable for working conditions such as top coal caving hydraulic supports where strict timing requirements are necessary.

[0062] Alternatively, in some embodiments, such as Figure 2 and Figure 3 As shown, the hydraulic support 100 also includes a reversing assembly 7 for switching the flow direction of hydraulic oil.

[0063] In one specific embodiment, in order to solve the above problems, the present invention provides an integrated valve for a top coal caving hydraulic support with a slide plate and a spray system. The integrated valve 1 can be installed at the rear end of the shield beam of the support where space is limited, and can realize the linkage function of the slide plate and the spray system, that is, the spray system automatically sprays when the slide plate is retracted. This method can save 35mm of installation width, and can also reduce the number of bolts, hoses and connectors, etc., and reduce costs while facilitating disassembly and solving problems such as difficulty in maintenance.

[0064] The integrated valve of this utility model includes: a valve body (base 10), a one-way valve 11, a spray valve 12, a one-way valve push rod (first push rod 111), a spray valve push rod, a one-way valve spring (first spring 114), a spray valve spring, a one-way valve spring seat, and a spray valve spring seat.

[0065] This utility model addresses the problem that the space behind the shield beam of a top-coal caving hydraulic support cannot accommodate two small valves side-by-side, and thus designs an integrated valve, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the space required for the integration of the two small valves is reduced by 35mm, which solves most of the installation problems of the shield beam due to the narrow space. At the same time, the overall installation can reduce 2 bolts, 1 fluid pipe and F-shaped tee connector, saving costs. During operation, the first oil inlet 14 is connected to the main valve slide plate extension function key, the second oil inlet 16 is connected to the slide plate retraction function key, the first oil outlet 15 is connected to the rodless chamber 61 of the slide plate cylinder 6, the second oil outlet 17 is connected to the rod chamber 62 of the cylinder 6, the water inlet 122 is connected to the water supply port of the tee block, and the water outlet 123 is connected to the spray valve 12 for water spraying. The dotted line is the machined small hole (hydraulic oil channel 13), which is responsible for leading the pressurized oil at the second oil inlet 16 to the pilot position of the spray valve 12. The specific working principle is as follows: when the insert plate extension button is pressed, the pressurized oil enters the rodless chamber 61 of the cylinder 6 through the first oil inlet 14 and the first oil outlet 15. At the same time, the pressurized oil pushes up the first push rod 111, pushes the spring seat and compresses the spring. The liquid in the rod chamber 62 is discharged through the second oil inlet 16 and the second oil outlet 17, thus realizing the insert plate extension function. At this time, the spray valve 12 has no pressurized oil and does not spray. When the slide plate retraction button is pressed, pressurized oil enters the direct-opening spring seat (first spring 114) through the second oil inlet 16. At the same time, pressurized oil enters the spray valve 12 through the machining hole. The push rod lifts the spring seat and compresses the spring, so that the water inlet 122 and the water outlet 123 are connected. At this time, the oil flows through the second oil inlet 16 and the second oil outlet 17 into the rod chamber 62 of the oil cylinder 6. The liquid in the rodless chamber 61 flows out through the first oil inlet 14 and the first oil outlet 15. The water enters the nozzle through the water inlet 122 and the water outlet 123 and sprays, thus realizing the automatic spraying while the slide plate 2 retracts.

[0066] This utility model employs two separate integrated valves with internal perforations. Through the fluid passage (hydraulic oil channel 13), the pressure oil used when the one-way valve 11 retracts can be directly led to the control oil circuit of the spray valve 12, enabling the retraction of the slide gate and the spray function to be linked. The integrated valve 1 is integrated and installed at the rear of the shield beam 3, reducing the overall width by 35mm, allowing the integrated valve 1 to meet the installation width requirements of most top coal caving supports.

[0067] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0070] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated valve, characterized in that, For a hydraulic support, the hydraulic support includes a slide plate that can extend or retract, the integrated valve including: Matrix; A one-way valve is disposed within the substrate; A spray valve is disposed within the substrate; A hydraulic oil passage is provided in the base body and connects one of the oil inlets of the one-way valve to the spray valve; When the insert plate extends, the spray valve is closed; when the insert plate retracts, hydraulic oil enters the spray valve through the hydraulic oil passage to open the spray valve. The one-way valve includes: A first push rod is slidably disposed within the one-way valve and divides the one-way valve into a first chamber and a second chamber; A first spring is disposed within the first cavity; One end of the hydraulic oil channel is connected to the oil inlet of the first cavity.

2. The integrated valve according to claim 1, characterized in that, The spray valve includes: Spray valve seat; The water inlet is located on the valve seat of the spray valve; The water outlet is located on the valve seat of the spray valve; A valve core is disposed within the valve seat of the spray valve and is used to isolate the inlet and the outlet. A drive control terminal is disposed inside the valve seat of the spray valve. The other end of the hydraulic oil passage is connected to the drive control terminal. The drive control terminal is used to drive the valve core to connect the inlet and the outlet.

3. The integrated valve according to claim 1, characterized in that, Also includes: The first oil inlet is located on the substrate; The first oil outlet is located on the substrate; The first oil inlet, the first oil outlet, and the second chamber are connected. The hydraulic oil enters the second chamber from the first oil inlet. The first push rod moves toward the first spring to drive the insert plate to extend. The spray valve is in the closed state.

4. The integrated valve according to claim 1, characterized in that, Also includes: A second oil inlet is provided on the base, and the second oil inlet is connected to the hydraulic oil passage. A second oil outlet is provided on the substrate; The second oil inlet, the second oil outlet, and the first cavity are connected. The hydraulic oil enters the first cavity from the second oil inlet. The first push rod moves away from the first spring to drive the insert plate to retract, and the spray valve is in the open state.

5. The integrated valve according to claim 1, characterized in that, The central axis of the one-way valve is coaxial with the central axis of the spray valve.

6. The integrated valve according to any one of claims 1 to 5, characterized in that, Also includes: At least two positioning mounting holes are provided on the base; A positioning element, which mates with the positioning mounting hole, is used to mount the integrated valve on the hydraulic support.

7. A hydraulic support, characterized in that, Includes the integrated valve as described in any one of claims 1 to 6.

8. The hydraulic support according to claim 7, characterized in that, Also includes: A shield beam includes an installation area, and the integrated valve is located within the installation area; Water tank, connected to the inlet of the integrated valve; The nozzle is connected to the outlet of the integrated valve.

9. The hydraulic support according to claim 7, characterized in that, It also includes a hydraulic cylinder and a slide plate, the hydraulic cylinder being used to drive the slide plate to extend or retract, the hydraulic cylinder comprising: The rodless chamber connects the first oil inlet and the first oil outlet of the integrated valve. The rod chamber is connected to the second oil inlet and the second oil outlet of the integrated valve.

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