Electric control switching device for large and small flow servo valves
By designing the electronically controlled switching device of large and small flow servo valves, the waste problems caused by low accuracy and manual replacement in the small flow servo valve are solved, and the test accuracy and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202422589935.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The prior art has low accuracy in flow servo valves. When manually replacing small servo valves, the transition valve plate needs to be reprocessed and hydraulic oil is prone to leak, resulting in waste of time and cost, affecting the accuracy of the test data.
An electronically controlled switching device for large and small flow servo valves is designed, including a first flow valve, a second flow valve, a cartridge valve, a valve plate and an oil cylinder. Through electronic switching, an unnecessary step of manually replacing a small flow valve is avoided. The servo valve and a filter valve plate structure is adopted to ensure the accuracy of the test.
It realizes that there is no need to manually replace the small flow valve during the test, which reduces working steps, saves time and costs, and improves the accuracy of the test.
Smart Images
Figure CN223190732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of servo valve testing, in particular to an electric control switching device for large and small flow servo valves. Background Art
[0002] The flow servo valve has poor accuracy when conducting small flow tests; when manually replacing a small servo valve, the transition valve plate needs to be reprocessed, and hydraulic oil will leak when the servo valve is replaced. After replacing the servo valve, the oil cleanliness of the system needs to be processed. Therefore, not only a lot of time is wasted, but also unnecessary work steps are generated and costs are increased. Because the above steps are too many and complicated, mistakes are prone to occur, which affects the accuracy of subsequent test data.
[0003] Therefore, in order to solve the above problems, an electric control switching device for large and small flow servo valves is proposed. Utility Model Content
[0004] The present invention aims to solve the above-mentioned problems and specifically designs an electric control switching device for large and small flow servo valves. The device can switch between large and small flow valves according to the type of valve to be tested, thereby avoiding unnecessary steps caused by reinstalling the small flow valve and ensuring the accuracy of the test.
[0005] To achieve the above-mentioned purpose, the utility model provides an electric control switching device for large and small flow servo valves, including: a first flow valve, a second flow valve, a cartridge valve, a valve plate and an oil cylinder, the first flow valve is fixedly connected to the side of the valve plate, the second flow valve is fixedly connected to the top of the valve plate, the first flow valve and the second flow valve are respectively connected to the valve plate through their own oil circuits, the valve plate is connected to the oil cylinder, the cartridge valve is fixedly connected to the valve plate, and the cartridge valve is connected to the oil circuit in the valve plate that is connected to the first flow valve.
[0006] In the above manner, the cartridge valve can cut off the oil path of the first flow valve in the valve plate, allowing the second flow valve to operate alone, thereby avoiding the disadvantages caused by switching the valve body during the test.
[0007] Furthermore, it also includes a filter valve plate, and the second flow valve also includes a small filter valve plate. The filter valve plate is fixedly connected between the first flow valve and the valve plate, and the oil circuit of the first flow valve is connected to the oil circuit of the valve plate through the filter valve plate. The small filter valve plate is fixedly connected above the valve plate, and the oil circuit of the second flow valve is connected to the oil circuit of the valve plate through the small filter valve plate.
[0008] Furthermore, the filter valve plate and the small filter valve plate are both connected to an external hydraulic oil source through a hydraulic oil port.
[0009] Furthermore, the flow rate of the first flow valve is greater than the flow rate of the second flow valve.
[0010] Furthermore, the first flow valve, the second flow valve and the cartridge valve are all servo valves.
[0011] Furthermore, there are two cartridge valves, and the two cartridge valves are respectively connected to the inlet and outlet oil passages communicating with the first flow valve and the valve plate.
[0012] In summary, the present invention has the following advantages and beneficial technical effects:
[0013] 1. The utility model is a large and small flow servo valve electronically controlled switching device that can switch the flow valve of large and small flow according to the test requirements during the test, which better meets the test requirements;
[0014] 2. The utility model's electric control switching device for large and small flow servo valves avoids the excessive steps required to manually replace a small flow servo valve, thereby reducing costs.
[0015] 3. The electric control switching device for large and small flow servo valves of the utility model avoids the need for hydraulic oil circulation and cleaning after manual replacement of a small flow valve, thus saving time. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0017] Figure 1 This is a schematic diagram of an electric control switching device for a large and small flow servo valve of the utility model;
[0018] Figure 2 This is a structural diagram of an electric-controlled switching device for a large and small flow servo valve of the utility model;
[0019] Figure 3 This is a front view of an electric-controlled switching device for a large and small flow servo valve according to the present invention;
[0020] Figure 4 This is a side view of an electric-controlled switching device for a large and small flow servo valve of the utility model;
[0021] Figure 5 It is a top view of an electric-controlled switching device for large and small flow servo valves of the utility model.
[0022] The reference numerals in the accompanying drawings are:
[0023] 1-first flow valve; 2-second flow valve; 21-small valve filter valve plate; 3-cartridge valve; 4-filter valve plate; 5-valve plate; 6-oil cylinder; 7-hydraulic oil port. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-Figure 5 The present invention will be further described in detail. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0025] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0026] In the description of this embodiment, the terms "upper", "lower", "right", etc., and the like, are based on the directions or positions shown in the accompanying drawings and are used only for the convenience of description and simplification of operation. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first" and "second" are used only to distinguish in the description and have no special meaning. The parts and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art. They will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, it includes: a first flow valve 1, a second flow valve 2, a cartridge valve 3, a valve plate 5, and an oil cylinder 6. The first flow valve 1 is fixedly connected to the side of the valve plate 5 by bolts, and the second flow valve 2 is fixedly connected to the top of the valve plate 5 by bolts. The first flow valve 1 and the second flow valve 2 are connected to the valve plate 5 through their own oil circuits. The valve plate 5 is connected to the oil cylinder 6. The cartridge valve 3 is fixedly connected to the valve plate 5 by bolts. The cartridge valve 3 is connected to the oil circuit in the valve plate 5 that is connected to the first flow valve 1. The flow rate of the first flow valve 1 is greater than the flow rate of the second flow valve 2. There are two cartridge valves 3, and the two cartridge valves 3 are respectively connected to the inlet and outlet oil circuits that connect the first flow valve 1 and the valve plate 5.
[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, it also includes a filter valve plate 4, and the second flow valve 2 also includes a small filter valve plate 21. The filter valve plate 4 is fixedly connected between the first flow valve 1 and the valve plate 5 by bolts. The oil circuit of the first flow valve 1 is connected to the oil circuit of the valve plate 5 through the filter valve plate 4. The small filter valve plate 21 is fixedly connected to the top of the valve plate 5 by bolts 9. The oil circuit of the second flow valve 2 is connected to the oil circuit of the valve plate 5 through the small filter valve plate 21.
[0029] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the filter valve plate 4 and the small filter valve plate 21 are both connected to an external hydraulic oil source through a hydraulic oil port.
[0030] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the first flow valve 1, the second flow valve 2 and the cartridge valve 3 are all servo valves.
[0031] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. An electric control switching device for large and small flow servo valves, characterized in that: include: A first flow valve (1), a second flow valve (2), a cartridge valve (3), a valve plate (5) and an oil cylinder (6), wherein the first flow valve (1) is fixedly connected to the side of the valve plate (5), the second flow valve (2) is fixedly connected to the top of the valve plate (5), the first flow valve (1) and the second flow valve (2) are communicated with the valve plate (5) through respective oil circuits, the valve plate (5) is connected to the oil cylinder (6), the cartridge valve (3) is fixedly connected to the valve plate (5), and the cartridge valve (3) is connected to the oil circuit in the valve plate (5) that is communicated with the first flow valve (1).
2. The electronically controlled switching device for large and small flow servo valves according to claim 1, characterized in that: The second flow valve (2) further comprises a filter valve plate (4), the filter valve plate (4) being fixedly connected between the first flow valve (1) and the valve plate (5), the oil circuit of the first flow valve (1) communicating with the oil circuit of the valve plate (5) through the filter valve plate (4), the small filter valve plate (21) being fixedly connected above the valve plate (5), the oil circuit of the second flow valve (2) communicating with the oil circuit of the valve plate (5) through the small filter valve plate (21).
3. The electronically controlled switching device for large and small flow servo valves according to claim 2, characterized in that: The filter valve plate (4) and the small filter valve plate (21) are both connected to an external hydraulic oil source via a hydraulic oil port.
4. The electronically controlled switching device for large and small flow servo valves according to claim 1, characterized in that: The flow rate of the first flow valve (1) is greater than the flow rate of the second flow valve (2).
5. The electronically controlled switching device for large and small flow servo valves according to claim 1, characterized in that: The first flow valve (1), the second flow valve (2) and the cartridge valve (3) are all servo valves.
6. The electronically controlled switching device for large and small flow servo valves according to claim 1, characterized in that: There are two cartridge valves (3), and the two cartridge valves (3) are respectively connected to the inlet and outlet oil passages communicating with the first flow valve (1) and the valve plate (5).