An electrically controlled multi-way valve

Abstract

The utility model provides a kind of electric control multiway valve, including proportion control valve, first working link, second working link, third working link and oil inlet valve from right to left in turn and parallelly arranged, first working link and second working link are included in first valve shell, the lower end of first valve shell is provided with first solenoid valve, upper end is provided with second solenoid valve, first valve shell is provided with oil port one connected with first solenoid valve on it, and oil port two connected with second solenoid valve;Third working link includes multiple parallelly arranged hand valve, the valve shell of hand valve is provided with oil port three and oil port four, oil inlet valve includes second valve shell, second valve shell is provided with oil inlet P and oil return port T.The electric control multiway valve of the utility model is compact in structure, small in space occupation, and meets the control of multiway execution element.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electrically controlled multi-way valve. Background Technology

[0002] The hydraulic tilting electronic multi-way valve for tractors requires multiple control channels to control different hydraulic actuators. However, existing electronic multi-way valves, in order to meet the required number of control channels, tend to have drawbacks such as large space occupation and insufficient compact structure, which affects their use. In addition, the response speed and control stability of electronic multi-way valves need to be further improved. Utility Model Content

[0003] This utility model proposes an electrically controlled multi-way valve with a compact structure, small footprint, and the ability to control multiple actuators.

[0004] The technical solution of this utility model is implemented as follows: an electrically controlled multi-way valve includes a proportional control valve, a first working link, a second working link, a third working link, and an oil inlet valve arranged in parallel from right to left. The first and second working links are both included in a first valve body. A first solenoid valve is provided at the lower end of the first valve body, and a second solenoid valve is provided at the upper end. The first valve body is provided with an oil port one connected to the first solenoid valve and an oil port two connected to the second solenoid valve. The third working link includes multiple manual valves arranged in parallel. The valve bodies of the manual valves are provided with oil ports three and four. The oil inlet valve includes a second valve body, and the second valve body is provided with an oil inlet P and an oil return port T.

[0005] Furthermore, an overflow valve is provided between the oil inlet P and the oil return port T, and the overflow valve is located inside the second valve body.

[0006] Furthermore, the manual valve is provided with valve port one and valve port two. Valve port one corresponds to oil port four and is connected to oil return port T. Valve port two corresponds to oil port three and is connected to oil inlet through a check valve.

[0007] Furthermore, a valve is installed between oil port four and the return port. If the manual valve malfunctions and oil port four cannot return oil smoothly, or if other situations require oil port four to return oil, the valve can be opened.

[0008] Furthermore, the oil outlet port one of the proportional control valve is connected to the first solenoid valve, the oil outlet port two is connected to the second solenoid valve, the oil inlet port of the proportional control valve is connected to the oil inlet port P, and the oil return port is connected to the oil return port T.

[0009] Furthermore, the manual valve is a three-position six-way valve.

[0010] Furthermore, the proportional control valve is a three-position four-way proportional valve with a neutral position negative cover.

[0011] The beneficial effects of this utility model are: The electric multi-way valve of this utility model has a compact structure and occupies little space. If there are 3 manual valves, there are 10 oil outlets, namely A1-A5 and B1-B5, which can meet the control of multiple actuators. Moreover, through the cooperation of the proportional control valve with two first solenoid valves and two second solenoid valves, it achieves advantages such as fast response speed, low energy consumption and good stability. Attached Figure Description

[0012] 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 these drawings without creative effort.

[0013] Figure 1 This is the front view of the present invention; Figure 2 for Figure 1 A bottom view; Figure 3 This is a schematic diagram of the present invention.

[0014] Proportional control valve 1, first working link 2, second working link 3, third working link 4, oil inlet valve 5, first valve body 6, first solenoid valve 7, second solenoid valve 8, oil port 1 9, oil port 2 10, manual valve 11, oil port 3 12, oil port 4 13, second valve body 14, relief valve 15, valve port 1 16, valve port 2 17, check valve 18, valve 19, oil outlet valve port 1 20, oil outlet valve port 2 21, oil inlet valve port 22, oil return valve port 23. Detailed Implementation

[0015] 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.

[0016] like Figure 1-3 As shown, an electrically controlled multi-way valve includes a proportional control valve 1, a first working link 2, a second working link 3, a third working link 4, and an oil inlet valve 5, which are fixedly connected in parallel from right to left. The first working link 2 and the second working link 3 are both included in a first valve housing 6. A first solenoid valve 7 is fixed to the lower end of the first valve housing 6 (corresponding to...). Figure 1 and Figure 3DT3 and DT5 in the middle), with a second solenoid valve 8 fixed at the upper end (corresponding to Figure 1 and Figure 3 (DT4 and DT6 in the text), the lower part of the front side of the first valve housing 6 is provided with an oil port 9 (corresponding to) connected to the first solenoid valve 7. Figure 1 and Figure 3 (B4 and B5 in the text), the upper part of the front side of the first valve body 6 is provided with an oil port 2 10 (corresponding to B4 and B5 in the text), which is connected to the second solenoid valve 8. Figure 1 and Figure 3 A1 and A5), oil port 19 and oil port 20 are respectively connected to the corresponding actuators.

[0017] The third working link 4 includes three parallel and fixedly connected manual valves 11. Each manual valve 11 is a three-position six-way valve, and the valve body of the manual valve 11 is provided with an oil port 12 (corresponding to...). Figure 1 A1, A2, A3) and oil port 4.13 (corresponding to Figure 1 B1, B2, and B3), oil port 3 12 and oil port 4 13 are respectively connected to the corresponding actuators. The oil inlet valve 5 includes a second valve body 14, on which an oil inlet P and an oil return port T are provided. An overflow valve 15 is provided between the oil inlet P and the oil return port T, and the overflow valve 15 is located inside the second valve body 14.

[0018] The manual valve 11 is equipped with valve port 16 and valve port 17. Valve port 16 corresponds to oil port 13 and is connected to the return oil port. Valve port 17 corresponds to oil port 12 and is connected to the oil inlet port through a check valve 18. A valve 19 connects oil port 13 and the return oil port T. By opening valve 19, oil port 13 can be connected to the return oil port.

[0019] Proportional control valve 1 is a three-position four-way proportional valve with neutral negative cover (controlled by dual solenoids, corresponding to...). Figure 1 and Figure 3 In the proportional control valve 1 (DT1 and DT2), the oil outlet port 20 of the proportional control valve 1 is connected to the first solenoid valve 7, the oil outlet port 21 of the proportional control valve 1 is connected to the second solenoid valve 8, the oil inlet port 22 of the proportional control valve 1 is connected to the oil inlet port P, and the oil return port 23 is connected to the oil return port T.

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

Claims

1. An electrically controlled multi-way valve, characterized in that: The system includes a proportional control valve, a first working link, a second working link, a third working link, and an inlet valve arranged in parallel from right to left. The first and second working links are both included in a first valve housing. A first solenoid valve is provided at the lower end of the first valve housing, and a second solenoid valve is provided at the upper end. The first valve housing has an oil port one connected to the first solenoid valve and an oil port two connected to the second solenoid valve. The third working link includes multiple manual valves arranged in parallel. The valve housing of the manual valves has an oil port three and an oil port four. The inlet valve includes a second valve housing, which has an oil inlet port P and an oil return port T.

2. The electrically controlled multi-way valve according to claim 1, characterized in that: An overflow valve is installed between the oil inlet P and the oil return port T, and the overflow valve is located inside the second valve body.

3. An electrically controlled multi-way valve according to claim 1 or 2, characterized in that: The manual valve is equipped with valve port one and valve port two. Valve port one corresponds to oil port four and is connected to the return oil port. Valve port two corresponds to oil port three and is connected to the oil inlet port through a check valve.

4. The electrically controlled multi-way valve according to claim 1, characterized in that: A valve is installed between oil port 4 and return oil port T.

5. The electrically controlled multi-way valve according to claim 1, characterized in that: The proportional control valve's outlet port 1 is connected to the first solenoid valve, and its outlet port 2 is connected to the second solenoid valve. The proportional control valve's inlet port is connected to the inlet port P, and its return port is connected to the return port T.

6. The electrically controlled multi-way valve according to claim 3, characterized in that: The manual valve is a three-position six-way valve.

7. An electrically controlled multi-way valve according to claim 1 or 5, characterized in that: The proportional control valve is a three-position four-way proportional valve with neutral negative cover.

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