A load-sensitive multi-way valve for coal mine boring machine

Abstract

The present application relates to a load-sensitive multi-way valve for a coal mine boring machine, comprising a pressure reducing valve body, a plate valve body and an oil inlet valve body, wherein an overflow valve and a safety valve are fixedly mounted on the pressure reducing valve body, a mounting bolt rod is fixedly mounted on the oil inlet valve body, a flow channel is penetrated through the interior of the oil inlet valve body, a branch channel connected to the flow channel is penetrated through the interior of the oil inlet valve body, and a connecting component is arranged inside the oil inlet valve body. The load-sensitive multi-way valve for a coal mine boring machine forms a three-way connection by setting a flow channel, a branch channel and a connecting pipe, and a blocking sleeve and a sealing sleeve are provided for blocking, so that the three-way connection can be adjusted by the connecting pipe, and a connecting mode in which an overflow hole and a connecting hole are connected to each other is provided, so that the fluid passing through the three-way connection can reduce the impact on the inner cavity of the oil inlet valve body, and the installation seat can reduce the temperature and reduce overheating by providing a liquid inlet, a liquid discharge port and a connecting channel, thereby improving the practicality of the device.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic components, and in particular to a load-sensitive multi-way valve for a coal mine tunneling machine. Background Art

[0002] The load-sensitive multi-way valve is a hydraulic component that is installed between the hydraulic pump and multiple actuators. It controls the flow and direction of the hydraulic oil according to the actual load, thereby controlling the movement direction and speed of the actuators.

[0003] At present, most of the load-sensitive proportional multi-way valves on the market in my country are of sheet structure. The advantages of the steel-machined load-sensitive proportional multi-way valve are compact design, high integration and small size. This is because the steel used for the valve body is machined, and it has the characteristics of small size but high strength. The main disadvantage is that the flow channel is machined, and there is no smooth transition between the phase channels, so the local resistance loss of the fluid is relatively large, the heat generation is also large, and the efficiency is low. Since the fluid at the three-way port generates resistance and heat in the flow channel, the control efficiency of the coal mine heading machine is reduced. In this regard, a load-sensitive multi-way valve for a coal mine heading machine is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a load-sensitive multi-way valve for a coal mine tunneling machine, which has the advantages of reducing the resistance and heat generation of the three-way flow channel in the multi-way valve.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a load-sensitive multi-way valve for a coal mine tunneling machine, comprising a pressure reducing valve body, a plate valve body and an oil inlet valve body, a relief valve and a safety valve are fixedly mounted on the pressure reducing valve body, a mounting bolt rod is fixedly mounted on the oil inlet valve body, a flow channel is penetrated through the interior of the oil inlet valve body, a branch channel connected to the flow channel is also penetrated through the interior of the oil inlet valve body, and a connecting component is arranged inside the oil inlet valve body;

[0006] The connecting component includes a mounting seat fixedly installed inside the oil inlet valve body, a sealing ring is fixedly installed on the external sealing of the mounting seat, a sliding block is slidably installed inside the mounting seat, a connecting pipe extending to the inside of the oil inlet valve body is fixedly installed on the top of the sliding block, a sealing sleeve tightly slidably connected to the connecting pipe is fixedly installed on the mounting seat, the sealing sleeve fits the connecting pipe, a barrier sleeve is also fixedly installed in the inner top cavity of the oil inlet valve body, the barrier sleeve is fixedly connected to the sealing sleeve, a connecting hole connected to the inside of the connecting pipe is penetrated on the outer wall of the connecting pipe, an overflow hole is penetrated on the barrier sleeve, and the connecting hole corresponds to the overflow hole.

[0007] Furthermore, the branch channel and the flow channel are perpendicular to each other.

[0008] Furthermore, the inner cavity of the oil inlet valve body is connected to the flow channel and the branch channel at the same time, and the mounting seat extends into the inner cavity of the oil inlet valve body.

[0009] Furthermore, an electric push rod is fixedly installed inside the mounting seat, and an output end of the electric push rod is fixedly connected to the slider.

[0010] Furthermore, a return spring abutting against the sealing sleeve is fixedly mounted on the sliding block.

[0011] Furthermore, the number of the overflow holes and the communicating holes is multiple, and the multiple overflow holes and the communicating holes are arranged in a ring shape.

[0012] Furthermore, a liquid inlet and a liquid discharge port are formed through the bottom of the mounting seat, and a connecting channel is formed inside the mounting seat, and the connecting channel is connected to the liquid inlet and the liquid discharge port at the same time.

[0013] Furthermore, an annular diverter groove is provided inside the mounting seat, and the number of the diverter grooves is several, which are interconnected at the two ends of the connecting channel. A liquid pump is fixedly installed on the outside of the oil inlet valve body, and the liquid outlet and return ends of the liquid pump are respectively connected to the liquid inlet and the liquid discharge port.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The load-sensitive multi-way valve for coal mine tunneling machines forms a three-way connection by arranging flow channels, branch channels and connecting pipes, and arranging a barrier sleeve and a sealing sleeve for blocking, so that the three-way connection can be regulated by the connecting pipe. By arranging a connection mode in which the overflow hole and the connecting hole are connected to each other, the fluid passing through the three-way connection can reduce the impact on the inner cavity of the oil inlet valve body. By arranging a liquid inlet, a liquid discharge port and a connecting channel, the mounting seat can be cooled to reduce overheating, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the application;

[0017] Figure 2 This is a longitudinal cross-sectional view of the oil inlet valve body of the present application;

[0018] Figure 3 A cross-sectional view of the barrier sleeve of the present application;

[0019] Figure 4 This is a cross-sectional view of the mounting base of the second embodiment of the present application.

[0020] In the figure: 1. pressure reducing valve body; 2. plate valve body; 3. oil inlet valve body; 4. overflow valve; 5. safety valve; 6. mounting bolt rod; 7. flow channel; 8. branch channel; 9. mounting seat; 10. sealing ring; 11. slider; 12. connecting pipe; 13. sealing sleeve; 14. barrier sleeve; 15. overflow hole; 16. connecting hole; 17. reset spring; 18. electric push rod; 19. liquid inlet; 20. liquid outlet; 21. connecting channel; 22. diversion groove; 23. liquid pump. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] See also Figure 1-4 In this embodiment, a load-sensitive multi-way valve for a coal mine tunneling machine includes a pressure reducing valve body 1, a plate valve body 2 and an oil inlet valve body 3. A relief valve 4 and a safety valve 5 are fixedly installed on the pressure reducing valve body 1, and a mounting bolt rod 6 is fixedly installed on the oil inlet valve body 3. A flow channel 7 is penetrated inside the oil inlet valve body 3, and a branch channel 8 connected to the flow channel 7 is also penetrated inside the oil inlet valve body 3. The branch channel 8 and the flow channel 7 are perpendicular to each other, and a three-way flow channel can be formed through the branch channel 8 and the flow channel 7.

[0023] Embodiment 1: In this embodiment, a connecting component is provided inside the oil inlet valve body 3, and the connecting component includes a mounting seat 9 fixedly installed inside the oil inlet valve body 3, and a sealing ring 10 is fixedly installed on the outside of the mounting seat 9. The sealing ring 10 can block the mounting seat 9 relative to the flow channel 7 and also make the installation of the mounting seat 9 stable.

[0024] It should be noted that the inner cavity of the oil inlet valve body 3 is connected to the flow channel 7 and the branch channel 8 at the same time, and the mounting seat 9 extends into the inner cavity of the oil inlet valve body 3. A slider 11 is slidably installed inside the mounting seat 9, and a connecting pipe 12 extending to the inside of the oil inlet valve body 3 is fixedly installed on the top of the slider 11. The connecting pipe 12 is a one-way pipeline, which is used to complete the connection between the branch channel 8 and the flow channel 7.

[0025] A sealing sleeve 13 tightly slidably connected to the connecting pipe 12 is fixedly mounted on the mounting seat 9 in this embodiment. The sealing sleeve 13 fits the connecting pipe 12. A barrier sleeve 14 is also fixedly mounted in the inner top cavity of the oil inlet valve body 3. The barrier sleeve 14 is fixedly connected to the sealing sleeve 13. The barrier sleeve 14 blocks the branch channel 8, so that the fluid in the interior of the oil inlet valve body 3 can only realize single-channel circulation through the flow channel 7.

[0026] In this embodiment, a connecting hole 16 connected to the inside of the connecting tube 12 is opened through the outer wall of the connecting tube 12, and an overflow hole 15 is opened through the barrier sleeve 14. The connecting hole 16 and the overflow hole 15 correspond to each other, and the positions of the overflow hole 15 and the connecting hole 16 can be adjusted by sliding the connecting tube 12, thereby realizing the connection of the connecting tube 12 relative to the flow channel 7, and also forming a three-way loop between the branch channel 8 and the flow channel 7.

[0027] It should be noted that an electric push rod 18 is fixedly installed inside the mounting seat 9, and the output end of the electric push rod 18 is fixedly connected to the slider 11. The connecting pipe 12 can be pushed and extended by the electric push rod 18. At the same time, a return spring 17 abutting against the sealing sleeve 13 is fixedly installed on the slider 11, and the position of the connecting pipe 12 can be adjusted by the return spring 17 and the electric push rod 18.

[0028] In this embodiment, the number of the overflow holes 15 and the communicating holes 16 are both multiple, and the multiple overflow holes 15 and the communicating holes 16 are arranged in a ring shape, so that the fluid gathered in the communicating pipe 12 can reduce the brushing pipeline.

[0029] Embodiment 2: In this embodiment, a liquid inlet 19 and a liquid discharge port 20 are formed through the bottom of the mounting seat 9, and a connecting channel 21 is formed inside the mounting seat 9. The connecting channel 21 is connected to the liquid inlet 19 and the liquid discharge port 20 at the same time. By filling the connecting channel 21 with condensate, the mounting seat 9 can be cooled by liquid.

[0030] It should be noted that in order to increase the circulation range of the condensate, a ring-shaped diversion groove 22 is also opened inside the mounting seat 9. There are several diversion grooves 22, which are interconnected at both ends of the connecting channel 21, so that the circulation effect of the condensate inside the mounting seat 9 is better.

[0031] In this embodiment, a liquid pump 23 is fixedly installed outside the oil inlet valve body 3, and a liquid outlet end and a liquid return end of the liquid pump 23 are respectively connected to the liquid inlet 19 and the liquid discharge port 20.

[0032] The working principle of the above embodiment is:

[0033] By driving the electric push rod 18, the electric push rod 18 drives the slider 11 and the connecting pipe 12 to extend through the interior of the barrier sleeve 14, and the connecting hole 16 and the overflow hole 15 outside the connecting pipe 12 are connected to each other. At this time, the fluid inside the flow channel 7 can be connected to the connecting pipe 12, and the flow channel 7 is connected to the branch channel 8 through the connection between the connecting pipe 12 and the branch channel 8. After the flow channel 7 and the branch channel 8 form a three-way connection, the fluid circulates, and the liquid pump 23 can control the condensate to circulate through the liquid inlet 19 and the liquid outlet 20, so that the condensate flows through the connecting channel 21 to cool the mounting seat 9.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A load-sensitive multi-way valve for a coal mine boring machine, comprising a pressure reducing valve body (1), a plate-type valve body (2) and an oil inlet valve body (3), characterized in that: The pressure reducing valve body (1) is fixedly mounted with a relief valve (4) and a safety valve (5); the oil inlet valve body (3) is fixedly mounted with a mounting bolt rod (6); a flow passage (7) is provided through the interior of the oil inlet valve body (3); a branch passage (8) connected to the flow passage (7) is also provided through the interior of the oil inlet valve body (3); and a connecting component is provided inside the oil inlet valve body (3); The connecting assembly comprises a mounting seat (9) fixedly mounted inside the oil inlet valve body (3); a sealing ring (10) is fixedly mounted on the outside of the mounting seat (9); a slider (11) is slidably mounted inside the mounting seat (9); a connecting pipe (12) extending to the inside of the oil inlet valve body (3) is fixedly mounted on the top end of the slider (11); a sealing sleeve (13) tightly slidably connected to the connecting pipe (12) is fixedly mounted on the mounting seat (9); The sealing sleeve (13) is fitted to the connecting pipe (12); a barrier sleeve (14) is fixedly installed in the inner top cavity of the oil inlet valve body (3); the barrier sleeve (14) is fixedly connected to the sealing sleeve (13); a connecting hole (16) connected to the inside of the connecting pipe (12) is penetrated through the outer wall of the connecting pipe (12); an overflow hole (15) is penetrated through the barrier sleeve (14); the connecting hole (16) corresponds to the overflow hole (15).

2. A load-sensitive multi-way valve for a coal mine boring machine according to claim 1, characterized in that: The branch channel (8) and the flow channel (7) are perpendicular to each other.

3. The load-sensitive multi-way valve for a coal mine boring machine according to claim 1, characterized in that: The inner cavity of the oil inlet valve body (3) is simultaneously connected to the flow channel (7) and the branch channel (8), and the mounting seat (9) extends into the inner cavity of the oil inlet valve body (3).

4. The load-sensitive multi-way valve for a coal mine boring machine according to claim 1, characterized in that: An electric push rod (18) is fixedly installed inside the mounting seat (9), and an output end of the electric push rod (18) is fixedly connected to the slider (11).

5. A load-sensitive multi-way valve for a coal mine boring machine according to claim 4, characterized in that: A return spring (17) abutting against the sealing sleeve (13) is fixedly mounted on the sliding block (11).

6. The load-sensitive multi-way valve for a coal mine boring machine according to claim 1, characterized in that: The number of the overflow holes (15) and the number of the communicating holes (16) are both multiple, and the multiple overflow holes (15) and the communicating holes (16) are arranged in a ring shape.

7. The load-sensitive multi-way valve for a coal mine boring machine according to claim 1, characterized in that: A liquid inlet (19) and a liquid outlet (20) are provided through the bottom of the mounting seat (9), and a connecting channel (21) is provided inside the mounting seat (9), wherein the connecting channel (21) is connected to both the liquid inlet (19) and the liquid outlet (20).

8. The load-sensing multi-way valve for a coal mine boring machine according to claim 7, characterized in that: The mounting seat (9) is also provided with an annular flow dividing groove (22), the number of which is a plurality and which are mutually connected to the two ends of the connecting channel (21). A liquid pump (23) is fixedly installed on the outside of the oil inlet valve body (3), and the liquid outlet end and the liquid return end of the liquid pump (23) are respectively connected to the liquid inlet port (19) and the liquid discharge port (20).

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