Liquid flow direction distribution control valve and control method thereof

Abstract

The invention provides a liquid flow direction distribution control valve and a control method thereof. The liquid flow direction distribution control valve comprises a valve body, a push rod, a valve element, a clutch assembly and a driving device. The valve body is provided with a columnar cavity, a plurality of oil outlets and a plurality of oil inlets. One end of the push rod is arranged in the columnar cavity, and the other end is hermetically connected with the valve body; a plurality of first grooves are formed in the inner wall of the columnar cavity in the axis direction of the push rod; one side of each first groove is communicated with the oil outlet, and the other side of each first groove is communicated with the oil inlet through an oil way channel; a group of valve cores are correspondingly arranged in each first groove; the push rod penetrates through the through hole of the valve core; the driving device drives the push rod to do reciprocating motion in the axis direction, the push rod drives any one or more valve elements to act through the clutch assembly in the reciprocating motion, the valve elements control the oil outlets corresponding to the valve elements to be opened or closed, and therefore oil way matching of any combination of the oil outlets is achieved.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic technology, and particularly to a liquid flow direction distribution control valve and a control method thereof. Background Art

[0002] In the fields of industrial equipment and civil equipment, hydraulic systems play an important role as key devices for power transmission. Currently, traditional reversing valves are limited by the valve body structure, and the oil ports can only be combined in a preset manner, making it difficult to meet the diverse fluid control requirements under complex working conditions. For example, for one inlet port and several outlet ports, different outlet ports can be selected to communicate with the inlet port according to the actual situation. To address this technical pain point, there is an urgent need for a liquid flow direction distribution control valve with the ability to flexibly match oil circuits and achieve free combination and distribution of multiple oil circuits. Summary of the Invention

[0003] The purpose of the present invention is to provide a liquid flow direction distribution control valve and a control method thereof, which can perform any combination and distribution of oil circuits for any one or more outlet ports to meet the requirements in actual work.

[0004] To solve the above problems, a first aspect of the present invention provides a liquid flow direction distribution control valve, including: a valve body, a push rod, a valve core, a clutch assembly, and a driving device; the valve body is provided with a cylindrical cavity, several outlet ports, and an inlet port; one end of the push rod is arranged in the cylindrical cavity, and the other end is sealingly connected to the valve body; several first grooves are arranged on the inner wall of the cylindrical cavity along the axial direction of the push rod; one side of each first groove communicates with the outlet port, and the other side of the first groove communicates with the inlet port through an oil circuit channel; a set of valve cores is correspondingly arranged in each first groove; the valve core is in clearance fit with the inner wall of the groove; the valve core has a through hole, and the push rod passes through the through hole of the valve core and is in clearance fit with the through hole; the driving device drives the push rod to reciprocate along the axial direction, and the push rod drives any one or more valve cores to act through the clutch assembly during the reciprocating motion, so that the valve core controls the opening or closing of the corresponding outlet port.

[0005] Further, in the above liquid flow direction distribution control valve, the axis of the oil circuit channel is coaxial with the corresponding outlet port, and the inner diameter of the oil circuit channel is the same as the inner diameter of the outlet port.

[0006] Further, in the above liquid flow direction distribution control valve, the clutch assembly includes: an electromagnetic coil arranged inside the push rod; the electromagnetic coil is correspondingly arranged with the valve core; the push rod is made of a non-magnetic material; the valve core is made of a magnetic material; when the electromagnetic coil is energized, it adsorbs the corresponding valve core.

[0007] Further, the clutch assembly in the above-mentioned liquid flow direction distribution control valve includes: a second groove provided at a corresponding position of the push rod and the valve core, and a third groove provided on the inner wall of the valve core corresponding to the second groove; both the oil outlet and the oil passage are located on one side of the first groove; at two extreme positions where the push rod is pushed outwards and inwards, the second groove is covered by the third groove; the second groove and the third groove are filled with electrorheological fluid; the push rod and the valve core are made of non-conductive materials; when the electrorheological fluid is in an energized state, the valve core moves following the push rod.

[0008] Further, in the above-mentioned liquid flow direction distribution control valve, the inner diameters of the oil outlet and the oil passage are smaller than the stroke of the push rod; the stroke of the push rod is smaller than the width of the second groove; the width of the second groove is smaller than the width of the third groove.

[0009] Further, in the above-mentioned liquid flow direction distribution control valve, the push rod is provided with a central through hole; the central through hole is used to arrange wires for controlling the energization and de-energization of the electromagnetic coil or the electrorheological fluid.

[0010] The second aspect also provides a control method, which uses the liquid flow direction distribution control valve described in any one of the foregoing to control the oil circuit, specifically including:

[0011] S1000: Obtain the pressure gauge data of each oil outlet and determine the oil outlets in the open state;

[0012] S2000: Obtain the actual demand, and based on the actual demand and in combination with the oil outlets in the open state, obtain the oil outlets that need to be opened;

[0013] S3000: Drive the push rod and control the clutch assembly to drive the valve core to open the oil outlets that need to be opened.

[0014] Through the clutch assembly, the push rod can drive any one or more valve cores during movement, thereby realizing the control of opening or closing the corresponding oil outlets, and further realizing any combination of oil circuit configurations of the oil outlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the valve body in an embodiment of the present invention;

[0017] Figure 3 is a schematic diagram of the extreme state when the push rod is pushed outwards in an embodiment of the present invention;

[0018] Figure 4It is a schematic diagram of the limit state when the push rod retracts inward in the embodiment of the present invention;

[0019] Figure 5 It is a schematic diagram of the control method flow shown in another embodiment of the present invention.

[0020] Reference numerals:

[0021] 1: Valve body;

[0022] 11: Columnar cavity;

[0023] 111: First groove;

[0024] 12: Oil outlet;

[0025] 121: First oil outlet;

[0026] 122: Second oil outlet;

[0027] 123: Third oil outlet;

[0028] 124: Fourth oil outlet;

[0029] 13: Oil inlet;

[0030] 14: Oil passage;

[0031] 141: First oil passage;

[0032] 142: Second oil passage;

[0033] 143: Third oil passage;

[0034] 144: Fourth oil passage;

[0035] 2: Push rod;

[0036] 21: Second groove;

[0037] 3: Spool valve;

[0038] 31: First spool valve;

[0039] 32: Second spool valve;

[0040] 33: Third spool valve;

[0041] 34: Fourth spool valve;

[0042] 35: Third groove. Detailed implementation mode

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0044] Referring to Figure 1 and Figure 2 , the liquid flow direction distribution control valve of the embodiment shown in the present invention includes: a valve body 1, a push rod 2, a valve core 3, a clutch assembly, and a driving assembly. The valve body 1 is provided with a columnar cavity 11, a plurality of oil outlets 12, and an oil inlet 13. One end of the push rod 2 is arranged in the columnar cavity 11, and the other end is sealingly connected to the valve body 1. A plurality of first grooves 111 are arranged on the inner wall of the columnar cavity 11 along the axial direction of the push rod 2. One side of each first groove 111 communicates with the oil outlet 12, and the other side communicates with the oil inlet 13 through an oil passage 14. A set of valve cores 3 are correspondingly arranged in each first groove 111. The valve core 3 is in clearance fit with the inner wall of the first groove 111. The valve core 3 has a through hole. The push rod 2 passes through the through hole of the valve core 3 and is in clearance fit with the through hole of the valve core 3. The valve core 3 can slide along the push rod 2. To facilitate the control of the opening and closing of the oil outlet 12, referring to Figure 2 , the axis of the oil passage 14 is coaxial with the corresponding oil outlet 12, and the inner diameter of the oil passage 14 is the same as the inner diameter of the oil outlet 12. The driving assembly can be an electric push rod 2 or other power mechanisms that can provide axial reciprocating motion.

[0045] The working principle of this embodiment will be described below. The driving assembly drives the push rod 2 to reciprocate along the axial direction. During the reciprocating motion of the push rod 2, any one or more valve cores 3 can be driven to act through the clutch assembly. Referring to Figure 1 and Figure 2, in this embodiment, there are a total of 4 groups of oil outlets 12, namely the first oil outlet 121, the second oil outlet 122, the third oil outlet 123, and the fourth oil outlet 124. Correspondingly, there are also 4 groups of valve cores 3, namely the first valve core 31, the second valve core 32, the third valve core 33, and the fourth valve core 34. And there are also 4 groups of grooves, namely the first groove 111, the second groove 21, the third groove 35, and the fourth groove. The first groove 111 is communicated with the oil inlet 13 through the first oil passage 141, the second groove 21 is communicated with the oil inlet 13 through the second oil passage 142, the third groove 35 is communicated with the oil inlet 13 through the third oil passage 143, and the fourth groove is communicated with the oil inlet 13 through the fourth oil passage 144. When it is necessary to open the first oil outlet 121 and the second oil outlet 122 and close the third oil outlet 123 and the fourth oil outlet 124, first collect the pressure values of the first oil outlet 121, the second oil outlet 122, the third oil outlet 123, and the fourth oil outlet 124 through the pressure gauge, so as to judge the opening and closing states of the current respective oil outlets. At this time, the driving assembly drives the push rod 2 to move, and drives the first valve core 31, the second valve core 32, the third valve core 33, and the fourth valve core 34 through the clutch assembly, so that the first valve core 31, the second valve core 32, the third valve core 33, and the fourth valve core 34 move to the corresponding positions, so that the first oil outlet 121 is communicated with the first oil passage 141, the first oil outlet 121 is opened, the second oil outlet 122 is communicated with the second oil passage 142, the second oil outlet 122 is opened, the third valve core 33 blocks the third oil outlet 123 or the third oil passage 143, the third oil outlet 123 is closed, the fourth valve core 34 blocks the fourth oil outlet 124 or the fourth oil passage 144, and the fourth oil outlet 124 is closed. If it is necessary to open the third oil outlet 123 again, but the states of the other oil outlets 12 remain unchanged, only need to let the driving assembly drive the push rod 2 again. At this time, the clutch assembly only drives the third valve core 33, and only the third valve core 33 will move following the push rod 2. Control the movement of the third valve core 33 so that the third oil outlet 123 is communicated with the third oil passage 143, and thus the third oil outlet 123 is opened. In short, through the clutch assembly, the push rod 2 drives any one or more valve cores 3 during the movement process, so as to control the opening and closing of each oil outlet 12. It should be specifically noted that those skilled in the art need to adjust the opening or closing of the oil outlet 12 according to the current relative positions of the push rod 2 and the valve core 3, that is, push the push rod 2 outwards or retract it. That is, if the current state is that pushing the push rod 2 outwards drives the valve core 3 to open the oil outlet 12, then when closing, the push rod 2 needs to be retracted to complete the blocking of the oil outlet 12 or the oil passage 14.

[0046] The first embodiment of the clutch assembly will be described below. The push rod 2 is made of a non-magnetic material, while the valve core 3 is made of a magnetic material. The clutch assembly includes: an electromagnetic coil is disposed at a position corresponding to the valve core 3 inside the push rod 2. When the electromagnetic coil is energized, the corresponding valve core 3 is adsorbed by the electromagnetic coil, and the clutch between the push rod 2 and the valve core 3 can be achieved.

[0047] The second embodiment of the clutch assembly will be described below. Refer to Figure 3 as the limit state when the push rod 2 is pushed outwards, Figure 4 as the limit state when the push rod 2 is retracted inwards. The oil outlet 12 and the oil passage 14 are both located on one side of the first groove 111 (as Figure 3 and Figure 4 shown. In this embodiment, the oil outlet 12 and the oil passage 14 are arranged on the right side of the first groove 111), and the inner diameters of the oil outlet 12 and the oil passage 14 are the same. The clutch assembly includes: a second groove 21 provided at a position corresponding to the push rod 2 and the valve core 3, and a third groove 35 provided on the inner wall of the valve core 3 corresponding to the second groove 21. The inner diameters of the oil outlet 12 and the oil passage 14 are smaller than the stroke of the push rod 2, and the stroke of the push rod 2 is smaller than the width of the second groove 21, and the width of the second groove 21 is smaller than the width of the third groove 35. And in the two limit positions of the push rod 2, the second groove 21 is within the coverage range of the third groove 35. Electro-rheological fluid is filled in the second groove 21 and the third groove 35 (when filling the electro-rheological fluid, the push rod 2 and the valve core 3 can be immersed in the electro-rheological fluid so that the electro-rheological fluid fills the second groove 21 and the third groove 35, and then the valve core 3 is sleeved on the push rod 2 so that the third groove 35 covers the second groove 21 to prevent the electro-rheological fluid from flowing out). After the electro-rheological fluid is energized, it will solidify instantly. Due to the existence of the second groove 21 and the third groove 35 after solidification, the solidified electro-rheological fluid can connect the push rod 2 and the valve core 3 into one body. After power-off, the electro-rheological fluid returns to the liquid state, and the push rod 2 and the valve core 3 are separated, thereby achieving the clutch effect. Both the push rod 2 and the valve core 3 are made of non-conductive materials to prevent the electro-rheological fluid in the third groove 35 of one set of valve cores 3 and the corresponding second groove 21 on the push rod 2 from conducting electricity and solidifying when the electro-rheological fluid in other positions is also energized. As Figure 3 shown, at this time, the valve core 3 blocks the oil outlet 12 and the oil passage 14, and at this time, the oil outlet 12 is closed. Energize the electro-rheological fluid in the second groove 21 and the third groove 35 to solidify it, and then drive the push rod to drive the valve core 3 to move to the position as shown in Figure 4 shown. At this time, the oil outlet 12 and the oil passage 14 are not blocked by the valve core 3, and the oil outlet 12 is opened. By following the same operation, the oil outlets 12 at other positions can be adjusted to be opened or closed.

[0048] It should be noted that in the first embodiment and the second embodiment of the clutch assembly, the push rod 2 is further provided with a central through hole for arranging wires for controlling the on / off of the electromagnetic coil or the electrorheological fluid.

[0049] The control method of the present invention is introduced below. The oil circuit is controlled by using the above-mentioned liquid flow direction distribution control valve, which specifically includes:

[0050] S1000: Obtain the pressure gauge data of each oil outlet and determine the oil outlets in the open state;

[0051] S2000: Obtain the actual demand, and based on the actual demand and in combination with the oil outlets in the open state, obtain the oil outlets that need to be opened;

[0052] S3000: Drive the push rod and control the clutch assembly to drive the valve core to open the oil outlets that need to be opened.

[0053] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A liquid flow distribution control valve, characterized in that Comprising: A valve body, a push rod, a valve core, a clutch assembly, and a driving device; The valve body is provided with a columnar cavity, a plurality of oil outlets, and an oil inlet; One end of the push rod is arranged in the columnar cavity, and the other end is sealingly connected to the valve body; A plurality of first grooves are arranged on the inner wall of the columnar cavity along the axial direction of the push rod; One side of each first groove communicates with the oil outlet, and the other side of the first groove communicates with the oil inlet through an oil passage; A set of valve cores is correspondingly arranged in each first groove; The valve core is in clearance fit with the inner wall of the groove; The valve core has a through hole, and the push rod passes through the through hole of the valve core and is in clearance fit with the through hole; The driving device drives the push rod to reciprocate along the axial direction, and the push rod drives any one or more valve cores to act through the clutch assembly during the reciprocating movement, so that the valve core controls the opening or closing of the corresponding oil outlet.

2. The liquid flow direction distribution control valve according to claim 1, wherein: The axis of the oil passage is coaxial with the corresponding oil outlet, and the inner diameter of the oil passage is the same as the inner diameter of the oil outlet.

3. The liquid flow direction distribution control valve according to claim 1, wherein: The clutch assembly includes: an electromagnetic coil arranged inside the push rod; The electromagnetic coil is correspondingly arranged with the valve core; The push rod is made of a non-magnetic material; The valve core is made of a magnetic material; When the electromagnetic coil is energized, it adsorbs the corresponding valve core.

4. The liquid flow direction distribution control valve according to claim 1, wherein: The clutch assembly includes: a second groove arranged at the corresponding position of the push rod and the valve core, and a third groove arranged on the inner wall of the valve core corresponding to the second groove; Both the oil outlet and the oil passage are located on one side of the first groove; At two extreme positions where the push rod is pushed outwards and inwards, the second groove is covered by the third groove; The second groove and the third groove are filled with an electrorheological fluid; The push rod and the valve core are made of a non-conductive material; When the electrorheological fluid is energized, the valve core moves along with the push rod.

5. The liquid flow direction distribution control valve according to claim 4, wherein: The inner diameters of the oil outlet and the oil passage are smaller than the stroke of the push rod; The stroke of the push rod is smaller than the width of the second groove; The width of the second groove is smaller than the width of the third groove.

6. The liquid flow direction distribution control valve according to claim 3 or 4, wherein: The push rod is provided with a central through hole; The central through hole is used to arrange wires for controlling the on-off of the electromagnetic coil or the electrorheological fluid.

7. A control method, which controls an oil circuit by using the liquid flow direction distribution control valve according to any one of claims 1-6, is characterized in that Comprising: S1000: Obtain the pressure gauge data of each oil outlet and judge the oil outlets in the open state; S2000: Obtain the actual demand, and obtain the oil outlets that need to be opened according to the actual demand and in combination with the oil outlets in the open state; S3000: Drive the push rod and control the clutch assembly to drive the valve core to open the oil outlets that need to be opened.

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