Two-position three-way control type oil circuit board

Abstract

The utility model belongs to the technical field of oil circuit boards, and discloses a two-position three-way control type oil circuit board which comprises a board body, at least one set of two-position three-way control valves arranged on the board body and through holes formed in the board body, the number of the through holes is the same as that of the two-position three-way control valves, and the two-position three-way control valves are arranged in the through holes. The two-position three-way control valve comprises a valve seat in threaded connection with the through hole, a valve cavity located in the valve seat, a liquid inlet channel, a liquid return channel, a load connecting channel and a compression spring arranged in the valve cavity, the liquid inlet channel, the liquid return channel and the load connecting channel are communicated with the valve cavity, and the two ends of the compression spring abut against the inner end face of the sealing seat a and the inner end face of the sealing seat b. And soft sealing rings are arranged at the outer ends of the sealing seat a and the sealing seat b. Due to the structure, the assembly time is shortened, the manufacturing cost is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of oil way board, provide a two -way three -way control formula oil way board of shortening assembly time, reduce manufacturing cost and prolong service life. BACKGROUND

[0002] As a key component of hydraulic system, the importance of hydraulic oil way board is self-evident. It is not only the core component of controlling the flow direction, pressure, flow and filtering of hydraulic oil, but also bears the heavy responsibility of ensuring the normal operation of the hydraulic system.

[0003] The existing hydraulic oil way board generally comprises a plate body, a blind hole arranged on the plate body, a valve seat positioning nut in the blind hole and a two-way three-way valve. The two-way three-way valve comprises a valve seat, a valve cavity on the valve seat, a liquid inlet channel, a liquid return channel and a load connection channel communicated with the valve cavity, a sleeve above the valve cavity, a valve core arranged in the sleeve, a hard sealing steel ball arranged between the valve cavity and the valve core, and a piston rod of a cylinder outside the valve core controlling the valve core to move downward. The valve seat is threadedly connected with the valve seat positioning nut, and the valve seat positioning nut is threadedly connected with the blind hole. The on-off of the liquid inlet channel and the load connection channel of the hydraulic oil way board with such structure is realized by the hard sealing steel ball, and the on-off of the load connection channel and the liquid return channel is also realized by the hard sealing steel ball.

[0004] The hydraulic oil way board with the above structure is prone to hydraulic oil leakage with the passage of time, has a short service life, and the assembly of a set of hydraulic oil way board takes 30 to 40 minutes. The machining process of the blind hole cooperating with each liquid inlet channel, liquid return channel and load connection channel is difficult, resulting in high manufacturing cost. INVENTION CONTENTS

[0005] Therefore, the utility model aims at providing a two-way three-way control formula oil way board which shortens assembly time, reduces manufacturing cost and prolongs service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] The utility model provides a two -way three -way control formula oil way board, including plate body, at least a set of two -way three -way control valve being arranged on plate body, the through -hole being arranged on plate body, the number of the through -hole is same with the number of two -way three -way control valve, two -way three -way control valve is arranged in the through -hole, wherein: two -way three -way control valve includes the valve seat with the through -hole is connected with the thread, the valve cavity in the valve seat, the liquid inlet channel, the liquid return channel and the load connection channel communicated with the valve cavity, the compression spring is arranged in the valve cavity, both ends of the compression spring are tightly abutted on the inner end face of sealing seat a and sealing seat b, the outer end of sealing seat a and sealing seat b all is provided with soft sealing ring;

[0008] In normal state, the outer end of the sealing seat a is tightly abutted at the liquid outlet of the liquid inlet channel, and the outer end of the sealing seat b is tightly abutted at the liquid inlet of the liquid return channel.

[0009] The valve seat is provided with a cylinder piston rod mounting cavity, and a cylinder integrated with the plate body is fixed on the side wall of the plate body at the position of one end of the through hole, and the cylinder piston rod of the cylinder is located in the cylinder piston rod mounting cavity.

[0010] In order to ensure the sealing between the valve seat and the inner wall of the through hole, in the above scheme, further: at least one sealing ring a is arranged between the valve seat and the inner wall of the through hole and close to the end position of the through hole.

[0011] In order to ensure the sealing between the cylinder piston rod and the cylinder piston rod mounting cavity, in the above scheme, further: at least one sealing ring b is arranged on the inner wall between the cylinder piston rod and the cylinder piston rod mounting cavity.

[0012] In order to ensure the sealing between the cylinder piston and the inner wall of the inner cavity of the cylinder, in the above scheme, further: the tail of the cylinder piston rod is located in the inner cavity of the cylinder and is fixedly connected with the cylinder piston as a whole, and at least one sealing ring c is arranged between the cylinder piston and the inner wall of the inner cavity of the cylinder.

[0013] In order to facilitate the control of the sealing seat b, in the above scheme, further: the cylinder is communicated with a gas pump through a pipeline, and the gas pump is communicated with a gas pressure source.

[0014] In order to facilitate real-time monitoring of the pressure on the liquid inlet channel, in the above scheme, further: a bypass pipeline is arranged on the liquid inlet channel and communicated with the liquid inlet channel, and a pressure gauge a or a pressure sensor is arranged on the bypass pipeline.

[0015] In order to facilitate the common control after being provided with at least two sets of two-position three-way control valves, in the above scheme, further: the bypass pipeline is communicated with a hydraulic pump through a main liquid supply pipeline provided with a one-way valve, the hydraulic pump is communicated with a hydraulic source, and a pressure gauge b or a pressure sensor is arranged on the main liquid supply pipeline.

[0016] In order to facilitate the recovery of hydraulic oil after work, in the above scheme, further: the hydraulic pump is communicated with the liquid return channel through a return pipeline provided with a one-way valve.

[0017] In order to protect and carry the plate body, in the above scheme, further: the plate body is located in a box body, the side wall of the box body is provided with an openable and closable door, and universal wheels are arranged on the bottom plate of the box body.

[0018] In order to facilitate the subsequent connection of the load executing mechanism, in the above scheme, further: a load adapter integrated with the liquid outlet of the load connection channel is arranged at the liquid outlet of the load connection channel.

[0019] The utility model discloses beneficial effect is:

[0020] The setting of the through hole makes the processing technology simple, is favorable in reducing manufacturing cost,

[0021] Two three -way control valves can be assembled and disassembled from any one end of the through -hole, and the late maintenance is convenient, improves the assembling and disassembling efficiency, and specifically, the time of assembling a set of hydraulic oil circuit board can be shortened to 10 to 12 minutes.

[0022] The setting of the soft sealing ring effectively guarantees the working pressure of the load execution mechanism, the general design pressure is 25 megapascal, and the structure can reach 35 megapascal, effectively guaranteeing that the working medium does not leak, and prolonging the service life of the two three -way control valve.

[0023] The setting of the soft sealing ring effectively guarantees the pressure -stabilizing effect, and can provide stable oil pressure for the load execution mechanism. DRAWINGS

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model will be described in preferred detail below in conjunction with the drawings, and specifically:

[0025] Figure 1 It is the structural schematic diagram of the utility model;

[0026] Figure 2 It is the enlarged structural schematic diagram of the two three -way control valve of the utility model;

[0027] Figure 3 It is the three -dimensional structural schematic diagram of the board body place of the utility model;

[0028] Figure 4 It is the structural schematic diagram of each passage at the board body place of the utility model;

[0029] Figure 5 It is the three -dimensional structural schematic diagram of one direction of the board body installation in the support frame place of the utility model;

[0030] Figure 6 It is the three -dimensional structural schematic diagram of another direction of the board body installation in the support frame place of the utility model;

[0031] Figure 7 It is the three -dimensional structural schematic diagram of the box body opening door place of the utility model;

[0032] Figure 8 It is the hydraulic control principle diagram of the utility model;

[0033] 1, plate body; 2, through hole; 3, two-position three-way control valve; 4, valve seat; 5, valve cavity; 6, liquid inlet channel; 7, liquid return channel; 8, load connection channel; 9, compression spring; 10, sealing seat a; 11, sealing seat b; 12, soft sealing ring; 13, cylinder piston rod mounting cavity; 14, cylinder; 15, cylinder piston rod; 16, sealing ring a; 17, sealing ring b; 18, cylinder piston; 19, sealing ring c; 20, air pump; 21, air pressure source; 22, pressure gauge a; 23, bypass pipeline; 24, main liquid supply pipeline; 25, hydraulic pump; 26, hydraulic source; 27, pressure gauge b; 28, check valve; 29, box body; 30, door; 31, universal wheel; 32, load adapter; 33, support frame; 34, load working pressure gauge mounting channel; 35, sealing ring d; 36, return pipe. DETAILED DESCRIPTION

[0034] The utility model will be further described below in combination with specific embodiments. Among them, the drawings are only used for example description, and the representation is only a schematic diagram, and not a physical drawing, and can not be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of actual product is not represented; for those skilled in the art, some well-known structures and their description in the drawings can be omitted, which is understandable.

[0035] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and can not be understood as indicating or implying relative importance. The utility model will be further described in detail below in combination with the drawings.

[0036] As Figures 1-8The utility model provides a two position three way control formula oil line board, including board body 1, set up at least a set of two position three way control valve 3 on board body 1, set up the through -hole 2 on board body 1, the number of this through -hole 2 is same with the number of two position three way control valve 3, two position three way control valve 3 set up in the through -hole 2, wherein: two position three way control valve 3 include the valve seat 4 with the through -hole 2 screw connection, be located the valve cavity 5 in valve seat 4, with the valve cavity 5 communication liquid inlet passage 6, back liquid passage 7 and load connection channel 8, set up compression spring 9 in valve cavity 5, the both ends of this compression spring 9 are tightly in the inner end face on sealing seat a 10 and sealing seat b 11, the outer end on sealing seat a 10 and sealing seat b 11 all is provided with soft sealing ring 12,

[0037] Under normal circumstances, the outer end of the sealing seat a 10 is tightly against the liquid outlet of the liquid inlet passage 6, and the outer end of the sealing seat b 11 is tightly against the liquid inlet of the back liquid passage 7.

[0038] The valve seat 4 is provided with a cylinder piston rod mounting cavity 13, and a cylinder 14 integrated with the board body 1 is fixed on the side wall of the board body 1 at one end position of the through hole 2. The cylinder piston rod 15 of the cylinder 14 is located in the cylinder piston rod mounting cavity 13. In this embodiment, the load connection channel 8 can also be connected to a pressure gauge c through a load working pressure gauge installation channel 34.

[0039] To ensure the sealing between the valve seat 4 and the inner wall of the through hole 2, in the above embodiment, preferably: at least one sealing ring a 16 is arranged between the valve seat 4 and the inner wall of the through hole 2 and close to the end position of the through hole 2.

[0040] To ensure the sealing between the cylinder piston rod 15 and the cylinder piston rod mounting cavity 13, in the above embodiment, preferably: at least one sealing ring b 17 is arranged on the inner wall between the cylinder piston rod 15 and the cylinder piston rod mounting cavity 13.

[0041] To ensure the sealing between the cylinder piston 18 and the inner wall of the inner cavity of the cylinder 14, in the above embodiment, preferably: the tail of the cylinder piston rod 15 is located in the inner cavity of the cylinder 14 and is fixedly connected with the cylinder piston 18 to form an integral whole, and at least one sealing ring c 19 is arranged between the cylinder piston 18 and the inner wall of the inner cavity of the cylinder 14. In this embodiment, at least one sealing ring d 35 is arranged between the cylinder piston rod 15 and the cylinder piston 18.

[0042] To facilitate the control of the sealing seat b 11, in the above embodiment, preferably: the cylinder 14 is communicated with a gas pump 20 through a pipeline, and the gas pump 20 is communicated with a gas pressure source 21.

[0043] In order to monitor the pressure on the liquid inlet channel 6 in real time, preferably, the liquid inlet channel 6 is provided with a bypass pipeline 23 communicating with the liquid inlet channel 6, and the bypass pipeline 23 is provided with a pressure gauge a22 or a pressure sensor.

[0044] In order to realize common control after the two sets of two-position three-way control valves 3 are provided, preferably, the bypass pipeline 23 communicates with a hydraulic pump 25 through a main liquid supply pipeline 24 provided with a one-way valve 28, the hydraulic pump 25 communicates with a hydraulic source 26, and the main liquid supply pipeline 24 is provided with a pressure gauge b27 or a pressure sensor.

[0045] In order to recycle the hydraulic oil after work, preferably, the hydraulic pump 25 communicates with the liquid return channel 7 through a return pipeline 36 provided with a one-way valve.

[0046] In order to protect and carry the plate body 1, preferably, the plate body 1 is located in a box body 29, the side wall of the box body 29 is provided with an openable and closable door 30, and the bottom plate of the box body 29 is provided with universal wheels 31.

[0047] In order to facilitate subsequent connection of a load actuator, preferably, a load adapter 32 is arranged at the liquid outlet of the load connection channel 8.

[0048] In the above embodiment, the plate body 1, the air pump 20, the air pressure source 21, the hydraulic source 26 and the hydraulic pump 25 are fixed on a support frame 33, and the support frame 33 is fixed on the bottom plate of the box body 29. The air pump 20, the hydraulic pump 25, the one-way valve 28, the pressure gauge a, the pressure gauge b, the one-way valve on the return pipeline 36 or the pressure sensor and other programmable components can be programmed by a controller with a PLC control sheet according to actual needs.

[0049] In all the above embodiments, the related components are conventional products sold on the market. The description of the program control part is for the understanding of the technical personnel in the art, and is not the utility model point of the present scheme.

[0050] The working process of the two-position three-way control type oil circuit plate is as follows:

[0051] Hydraulic oil enters hydraulic pump 25 from hydraulic source 26 through main supply pipeline 24 (one-way valve 28 is arranged), and hydraulic pump 25 pumps hydraulic oil to bypass pipeline 23 (pressure table a22 or pressure sensor can be arranged to monitor pressure). When hydraulic oil needs to flow to load connection channel 8, hydraulic oil enters liquid inlet channel 6 from bypass pipeline 23 and pushes sealing seat a10, sealing seat a10 pushes compression spring 9, compression spring 9 pushes the outer end of sealing seat b11 to block the liquid inlet of return flow channel 7, so that hydraulic oil flows to load actuator through load adapter 32 after liquid inlet channel 6 and load connection channel 8 are communicated. In this process, the one-way valve on return flow pipe 36 is closed, and the one-way valve 28 of the main supply pipeline 24 is opened.

[0052] When the load actuator completes the work and needs to recover hydraulic oil, air pump 20 obtains air pressure from air pressure source 21 and provides air pressure to cylinder 14 through the pipeline. Cylinder piston 18 pushes cylinder piston rod 15 to move downward under the action of air pressure, the front end of cylinder piston rod 15 pushes sealing seat b11 to overcome the elastic force of compression spring 9, so that the outer end of sealing seat b11 is away from the liquid inlet of return flow channel 7. At the same time, sealing seat a10 is kept tightly against the liquid outlet of liquid inlet channel 6 under the action of compression spring 9, preventing hydraulic oil from flowing back. After return flow channel 7 and load connection channel 8 are communicated, hydraulic oil is pumped back to hydraulic source 26 by hydraulic pump 25 for reuse. In this process, the one-way valve on return flow pipe 36 is opened, and the one-way valve 28 of the main supply pipeline 24 is closed.

[0053] During the whole process, pressure table a22 or pressure sensor is arranged on bypass pipeline 23 of liquid inlet channel 6 to monitor the pressure of hydraulic oil in real time. Pressure table b27 or pressure sensor is arranged on main supply pipeline 24 to monitor the output pressure of hydraulic pump 25. Box 29 protects plate body 1, the side wall is provided with openable and closable door 30 to facilitate maintenance and repair, and the bottom plate is provided with universal wheel 31 to facilitate carrying.

[0054] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A two-position three-way control type oil way plate, comprising a plate body (1), at least one set of two-position three-way control valves (3) arranged on the plate body (1), through holes (2) arranged on the plate body (1), the number of the through holes (2) being the same as the number of the two-position three-way control valves (3), and the two-position three-way control valves (3) being arranged in the through holes (2); characterized in that: The two-position three-way control valve (3) comprises a valve seat (4) screwed with the through hole (2), a valve cavity (5) in the valve seat (4), a liquid inlet channel (6), a liquid return channel (7) and a load connection channel (8) communicated with the valve cavity (5), a compression spring (9) arranged in the valve cavity (5), the two ends of the compression spring (9) tightly abutting against the inner end faces of a sealing seat a (10) and a sealing seat b (11), and a soft sealing ring (12) arranged on the outer end of the sealing seat a (10) and the sealing seat b (11). ​ In normal state, the outer end of the sealing seat a (10) tightly abuts against the liquid outlet of the liquid inlet channel (6), and the outer end of the sealing seat b (11) tightly abuts against the liquid inlet of the liquid return channel (7). A cylinder piston rod mounting cavity (13) is arranged on the valve seat (4), and a cylinder (14) integrated with the plate body (1) is fixed on the side wall of the plate body (1) at one end position of the through hole (2), and a cylinder piston rod (15) of the cylinder (14) is located in the cylinder piston rod mounting cavity (13).

2. The two-position, three-way control type oil passage plate according to claim 1, characterized by: At least one sealing ring a (16) is arranged between the valve seat (4) and the inner wall of the through hole (2) and close to the end position of the through hole (2).

3. The two-position, three-way control type oil passage plate according to claim 1, characterized by: At least one sealing ring b (17) is arranged on the inner wall between the cylinder piston rod (15) and the cylinder piston rod mounting cavity (13).

4. The two-position, three-way control type oil passage plate according to claim 1 or 3, characterized by: A tail of the cylinder piston rod (15) is located in the inner cavity of the cylinder (14) and fixedly connected with a cylinder piston (18) as a whole, and at least one sealing ring c (19) is arranged between the cylinder piston (18) and the inner wall of the inner cavity of the cylinder (14).

5. The two-position, three-way control type oil passage plate according to claim 4, characterized by: The cylinder (14) is communicated with a gas pump (20) through a pipeline, and the gas pump (20) is communicated with a gas pressure source (21).

6. The two-position, three-way control type oil passage plate according to claim 1, characterized by: A bypass pipeline (23) is arranged on the liquid inlet channel (6) and communicated with the liquid inlet channel (6), and a pressure gauge a (22) or a pressure sensor is arranged on the bypass pipeline (23).

7. The two-position, three-way control type oil passage plate according to claim 6, characterized by: The bypass pipeline (23) is communicated with a hydraulic pump (25) through a main liquid supply pipeline (24) provided with a one-way valve (28), the hydraulic pump (25) is communicated with a hydraulic source (26), and a pressure gauge b (27) or a pressure sensor is arranged on the main liquid supply pipeline (24).

8. The two-position, three-way control type oil passage plate according to claim 7, characterized by: The hydraulic pump (25) is communicated with the liquid return channel (7) through a return pipeline (36) provided with a one-way valve.

9. The two-position, three-way control type oil passage plate according to claim 1, characterized by: The plate body (1) is located in a box body (29), a side wall of the box body (29) is provided with an openable and closable door (30), and a universal wheel (31) is arranged on the bottom plate of the box body (29).

10. The two-position, three-way control oil circuit board of claim 1, wherein: A load adapter (32) integrated with the load connection channel (8) is arranged at the liquid outlet of the load connection channel (8).

Images