A flow dividing multi-way valve assembly

Abstract

The present invention relates to the field of hydraulic systems, and in particular to a diverter multi-way valve assembly. The assembly comprises a multi-way valve and a diverter valve, wherein the oil inlet of the diverter valve is connected to a hydraulic pump through a fourth oil pipe, the flow-adjustable oil outlet of the diverter valve is respectively connected to the oil inlet of the multi-way valve connecting a working device and other systems through a first oil pipe and a second oil pipe, the flow-fixed oil outlet of the diverter valve is connected to the other systems through a third oil pipe, the working device oil outlet of the multi-way valve is connected to the working device oil circuit, and the other system oil outlet of the multi-way valve is connected to the other system oil circuit. The hydraulic oil flows to the third oil pipe through the flow-fixed oil outlet of the diverter valve and flows to the other systems, the hydraulic oil flows to the first oil pipe through the flow-adjustable oil outlet of the diverter valve and flows to the working device connected to the multi-way valve through the first oil pipe, and since the hydraulic oil flows from the flow-adjustable oil outlet of the diverter valve to the first oil pipe, the flow of the hydraulic oil can be adjusted by the diverter valve to meet the flow control requirements.

Description

Technical Field

[0001] The invention relates to the field of hydraulic systems, and in particular to a flow-dividing multi-way valve assembly. Background Art

[0002] At present, for high-end hydraulic agricultural machinery, not only pressure control but also flow rate and speed control are required. In order to meet the control of different flow rates, it is necessary to increase or decrease the working pressure of the system to adjust the flow control. At this time, if the system pressure is increased, the system load will increase, affecting the service life of each actuator. If the system pressure is reduced, the flow of the whole machine will be reduced, resulting in invalid or inadequate action. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a flow-dividing multi-way valve assembly to solve the problem that the flow of the multi-way valve cannot be controlled and an adjustable flow input cannot be provided for a working device.

[0004] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: a diverter multi-way valve assembly, comprising a multi-way valve and a diverter valve, the oil inlet of the diverter valve being connected to the hydraulic pump via a fourth oil pipe, the flow-adjustable oil outlet of the diverter valve being respectively connected to the oil inlet of a working device connected to the multi-way valve and the oil inlet of other systems via a first oil pipe and a second oil pipe, the flow-fixed oil outlet of the diverter valve being connected to the other systems via a third oil pipe, the working device oil outlet of the multi-way valve being connected to the working device oil circuit, and the other system oil outlets of the multi-way valve being connected to the other system oil circuits.

[0005] Furthermore, a one-way valve is provided on the first oil pipe, and the one-way valve allows oil to flow from the flow-adjustable oil outlet of the diverter valve to the oil inlet of the multi-way valve connected to the working device in one direction.

[0006] Furthermore, an overload protection component is connected to the oil circuit of the fourth oil pipe, the oil inlet of the overload protection component is connected to the fourth oil pipe, and the oil outlet of the overload protection component is connected to the oil return circuit of the hydraulic oil tank.

[0007] Furthermore, the overload protection component is a relief valve.

[0008] Furthermore, the multi-way valve is a three-position six-way solenoid valve.

[0009] The present invention provides a diverter multi-way valve assembly, comprising a multi-way valve and a diverter valve, wherein the oil inlet of the diverter valve is connected to a hydraulic pump via a fourth oil pipe, the flow-adjustable oil outlet of the diverter valve is respectively connected to the oil inlets of a working device and other systems connected to the multi-way valve via a first oil pipe and a second oil pipe, the flow-fixed oil outlet of the diverter valve is connected to the other systems via a third oil pipe, the working device oil outlet of the multi-way valve is connected to the working device oil circuit, and the other system oil outlets of the multi-way valve are connected to the other system oil circuits. In this way, when working, the hydraulic pump provides hydraulic oil to the diverter valve through the fourth oil pipe. When the working device is not working, the hydraulic oil flows to the third oil pipe through the flow-fixed oil outlet of the diverter valve, and then flows to the remaining systems. At the same time, the hydraulic oil flows to the second oil pipe through the flow-adjustable oil outlet of the diverter valve, and flows to the remaining systems connected to the multi-way valve through the second oil pipe, so that the hydraulic oil diverted by the diverter valve converges and flows to the remaining systems; when the working device is working, the hydraulic oil flows to the third oil pipe through the flow-fixed oil outlet of the diverter valve, and then flows to the remaining systems. At the same time, the hydraulic oil flows to the first oil pipe through the flow-adjustable oil outlet of the diverter valve, and flows to the working device connected to the multi-way valve through the first oil pipe. Since the hydraulic oil flows from the flow-adjustable oil outlet of the diverter valve to the first oil pipe, the flow of the hydraulic oil can be adjusted by the diverter valve to meet the control requirements of different flow rates. Compared with the prior art, the advantages are: the hydraulic system can meet the control requirements of different flow rates while meeting the pressure control. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the connection structure of a flow-dividing multi-way valve assembly of the present invention.

[0011] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0012] 1. Multi-way valve, 2. Diverter valve, 3. Hydraulic pump, 4. Check valve, 5. Overflow valve, 6. First oil pipe, 7. Second oil pipe, 8. Third oil pipe, 9. Fourth oil pipe, 10. Other systems. DETAILED DESCRIPTION

[0013] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0014] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "center", "inside", "outside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] like Figure 1 As shown, the present invention provides a diverter multi-way valve assembly, comprising a multi-way valve 1 and a diverter valve 2, the oil inlet of the diverter valve 2 is connected to the hydraulic pump 3 through a fourth oil pipe 9, the flow-adjustable oil outlet of the diverter valve 2 is respectively connected to the oil inlet of the working device connected to the multi-way valve 1 and the oil inlet of the remaining system 10 through a first oil pipe 6 and a second oil pipe 7, the flow-fixed oil outlet of the diverter valve 2 is connected to the remaining system 10 through a third oil pipe 8, the working device oil outlet of the multi-way valve 1 is connected to the working device oil circuit, and the remaining system 10 oil outlet of the multi-way valve 1 is connected to the oil circuit of the remaining system 10. In this way, when working, the hydraulic pump 3 provides hydraulic oil to the diverter valve 2 through the fourth oil pipe 9. When the working device is not working, the hydraulic oil flows to the third oil pipe 8 through the flow-fixed oil outlet of the diverter valve 2, and then flows to the remaining systems 10. At the same time, the hydraulic oil flows to the second oil pipe 7 through the flow-adjustable oil outlet of the diverter valve 2, and flows to the remaining systems 10 connected to the multi-way valve 1 through the second oil pipe 7, so that the hydraulic oil diverted by the diverter valve 2 converges and flows to the remaining systems 10; when the working device is working, the hydraulic oil flows to the third oil pipe 8 through the flow-fixed oil outlet of the diverter valve 2, and then flows to the remaining systems 10. At the same time, the hydraulic oil flows to the first oil pipe 6 through the flow-adjustable oil outlet of the diverter valve 2, and flows to the working device connected to the multi-way valve 1 through the first oil pipe 6. Since the hydraulic oil flows from the flow-adjustable oil outlet of the diverter valve 2 to the first oil pipe 6, the flow of the hydraulic oil can be adjusted by the diverter valve 2 to meet the control requirements of different flow rates. Compared with the prior art, the advantage is that the hydraulic system can satisfy the control requirements of different flow rates while satisfying the pressure control.

[0017] The flow dividing multi-way valve assembly of the present invention is as follows: Figure 1As shown, on the basis of the technical solution described above, it can also be that: a one-way valve 4 is arranged on the first oil pipe 6, and the one-way valve 4 allows the oil to flow from the flow-adjustable oil outlet of the diverter valve 2 to the oil inlet of the multi-way valve 1 connected to the working device in one direction. In this way, a one-way valve 4 is arranged on the first oil pipe 6, and when the system is working, the one-way valve 4 allows the hydraulic oil to flow from the flow-adjustable oil outlet of the diverter valve 2 to the multi-way valve 1 in one direction. It can be understood that when the working device is working under load, the pressure on the oil path where the hydraulic oil flows from the flow-adjustable oil outlet of the diverter valve 2 to the multi-way valve 1 is relatively high. After the one-way valve 4 is arranged, the hydraulic oil going to the multi-way valve 1 cannot flow back to the flow-adjustable oil outlet of the diverter valve 2 due to the action of the one-way valve 4, thereby ensuring the stability of the multi-way valve 1 when working, protecting the diverter valve 2 from the influence of the reflux oil, and extending the service life of the diverter valve 2.

[0018] The flow dividing multi-way valve assembly of the present invention is as follows: Figure 1 As shown, on the basis of the technical solution described above, it can also be that: an overload protection component is connected to the oil circuit of the fourth oil pipe 9, the oil inlet of the overload protection component is connected to the fourth oil pipe 9, and the oil outlet of the overload protection component is connected to the oil circuit of the return port of the hydraulic oil tank. In this way, an overload protection component is connected to the oil circuit of the fourth oil pipe 9, and when the amount of oil provided by the hydraulic pump 3 is greater than the amount of oil required by the working device in the system, the overload protection component transports the excess hydraulic oil to the oil tank to protect the working pressure of the hydraulic system in a normal state. A further preferred technical solution is that the overload protection component is a relief valve 5. In this way, when the amount of oil provided by the hydraulic pump 3 is greater than the amount of oil required by the actuator in the system, the relief valve 5 opens, and the relief valve 5 transports the excess hydraulic oil from the oil discharge port to the oil tank to protect the working pressure of the hydraulic system in a normal state.

[0019] The flow dividing multi-way valve assembly of the present invention is as follows: Figure 1 As shown, on the basis of the technical solution described above, the multi-way valve 1 can also be a three-position six-way solenoid valve. In this way, when the three-position six-way solenoid valve is in the middle position, the first oil pipe 6 is in a closed state, and no oil flows at this time. The second oil pipe 7 realizes the flow of hydraulic oil to the remaining system 10 through the multi-way valve 1. When the valve core of the multi-way valve 1 switches the position, the hydraulic oil in the first oil pipe 6 flows to the working device through the multi-way valve 1, and the second oil pipe 7 is in a closed state.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow dividing multi-way valve assembly, characterized in that: The invention comprises a multi-way valve (1) and a diverter valve (2), wherein the oil inlet of the diverter valve (2) is connected to a hydraulic pump (3) via a fourth oil pipe (9), the flow-adjustable oil outlet of the diverter valve (2) is connected to the oil inlet of a working device of the multi-way valve (1) and the oil inlet of a remaining system (10) via a first oil pipe (6) and a second oil pipe (7), respectively, and the flow-fixed oil outlet of the diverter valve (2) is connected to the remaining system (10) via a third oil pipe (8) The working device oil outlet of the multi-way valve (1) is connected to the working device oil circuit, and the remaining system (10) oil outlet of the multi-way valve (1) is connected to the remaining system (10) oil circuit; an overload protection component is provided on the oil circuit of the fourth oil pipe (9), the oil inlet of the overload protection component is connected to the fourth oil pipe (9), and the oil outlet of the overload protection component is connected to the oil return port oil circuit of the hydraulic oil tank; the multi-way valve (1) is a three-position six-way solenoid valve.

2. The flow dividing multi-way valve assembly according to claim 1, characterized in that: A one-way valve (4) is provided on the first oil pipe (6), and the one-way valve (4) allows oil to flow from the flow-adjustable oil outlet of the diverter valve (2) to the oil inlet of the multi-way valve (1) connected to the working device in one direction.

3. The flow dividing multi-way valve assembly according to claim 1, characterized in that: The overload protection component is a relief valve (5).

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