Control valve group and hydraulic system
By arranging solenoid valves and flow regulating valves in parallel in the control valve group and setting a signal feedback port at the oil return port, the problem of oil flow changing with pressure is solved, simplifying the structure and reducing costs.
Patent Information
- Application Number
- CN202520532211.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-24
AI Technical Summary
In existing control valve assemblies, the oil flow rate changes with pressure during use, and the signal feedback port of the solenoid valve has a complex structure, resulting in high cost.
Design a control valve assembly including a first solenoid valve and a second solenoid valve arranged in parallel, and equipped with first and second flow regulating valves. By setting a signal feedback port at the oil return port, the flow regulating valve is used to control the flow stability, and a check valve is used to prevent oil backflow, thus simplifying the structure.
It achieves oil flow rate that does not change with system pressure, has a simple structure, is highly practical, and reduces costs.
Smart Images
Figure CN223825349U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of hydraulic pressure, especially a control valve group and hydraulic system. BACKGROUND
[0002] In recent years, with the continuous development of hydraulic technology, various structure valve groups, such as control valve groups, have been more and more widely used in various hydraulic systems.
[0003] The control valve group usually includes multiple valve bodies, such as multiple electromagnetic valves, which are assembled together to achieve predetermined special functions. Currently, the widely used control valve groups are various, but in the use process, the problem of changing the flow of hydraulic oil with the change of pressure in the system is common. In addition, when the signal feedback port is set in the electromagnetic valve used in the control valve group, the signal feedback port usually needs to be separately opened on the pressure port of the electromagnetic valve, which leads to a more complex structure and higher use cost.
[0004] In summary, how to provide a control valve group with simple structure, strong practicability and oil flow that does not change with the change of pressure, and a hydraulic system including the control valve group, has become a technical problem that technicians in the field need to solve urgently. SUMMARY
[0005] The technical problem to be solved by the utility model is to provide a control valve group with simple structure, strong practicability and oil flow that does not change with the change of pressure, and a hydraulic system including the control valve group.
[0006] The solution of the utility model is implemented as follows: the utility model provides a control valve group, which includes a valve block, a detachable first electromagnetic valve and a second electromagnetic valve are arranged on the valve block, the first electromagnetic valve and the second electromagnetic valve are arranged side by side and can respectively communicate with the valve block, a first flow regulating valve and a second flow regulating valve are also arranged on the valve block, the first flow regulating valve and the second flow regulating valve are respectively arranged on one side of the first electromagnetic valve and the second electromagnetic valve, a plurality of overflow valves are also arranged on the valve block, the plurality of overflow valves are arranged on one end of the first electromagnetic valve and the second electromagnetic valve, an oil return port is arranged on the first electromagnetic valve and the second electromagnetic valve, and a signal feedback port for feeding back load information is arranged on one side of the oil return port. The control valve group with the above structure controls the flow in the hydraulic system by the first flow regulating valve and the second flow regulating valve during the working process, and the flow does not change with the change of system pressure. Overall, the control valve group has the advantages of simple structure, strong practicability and the like.
[0007] The utility model discloses another technical scheme on the basis of the above, first electromagnetic valve and second electromagnetic valve are all three position five way electromagnetic reversing valve.
[0008] The utility model discloses another technical scheme on the basis of the above, the control valve group still includes first check valve, first check valve is arranged in one side of first flow regulating valve, first check valve can communicate with first electromagnetic valve.
[0009] The utility model discloses another technical scheme on the basis of the above, the control valve group still includes second check valve, first check valve is arranged in one side of second flow regulating valve, second check valve can communicate with second electromagnetic valve.
[0010] The utility model discloses another technical scheme on the basis of the above, the control valve group still includes first damper, first damper communicates with first check valve through pipeline, the control valve group still includes second damper, and second damper communicates with second check valve through pipeline.
[0011] The utility model discloses another technical scheme on the basis of the above, the overflow valve includes first overflow valve, and first overflow valve is arranged in one side of first electromagnetic valve and can communicate with first electromagnetic valve.
[0012] The utility model discloses another technical scheme on the basis of the above, the overflow valve still includes second overflow valve, and second overflow valve is arranged in one side of second electromagnetic valve and can communicate with second electromagnetic valve.
[0013] The utility model discloses another technical scheme on the basis of the above, the control valve group still includes first balance valve, and first balance valve is arranged in one side of first electromagnetic valve and can communicate with first electromagnetic valve.
[0014] The utility model discloses another technical scheme on the basis of the above, the control valve group still includes second balance valve, and second balance valve is arranged in one side of second electromagnetic valve and can communicate with second electromagnetic valve.
[0015] On the other hand, the utility model also proposes a kind of hydraulic system, including control valve group, and motor and oil cylinder respectively with the control valve group can communicate, the control valve group is as described above control valve group. BRIEF DESCRIPTION OF DRAWINGS
[0016] The drawings that constitute part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model.
[0017] Figure 1A control valve group structure schematic view of the utility model is shown in the figure.
[0018] Figure 2 For Figure 1 A control valve group top view schematic view.
[0019] Figure 3 A hydraulic system structure schematic view of the utility model.
[0020] Corresponding relationship of the reference signs is:
[0021] 1 first electromagnetic valve 2 first flow regulating valve 3 first check valve
[0022] 4 first overflow valve 5 oil return port 6 signal feedback port
[0023] 7 oil inlet 8 second overflow valve 9 first damper
[0024] 10 first balance valve 11 second balance valve 12 second damper
[0025] 13 second electromagnetic valve 14 oil cylinder 15 motor
[0026] 16 second flow regulating valve 17 second check valve 18 valve block DETAILED DESCRIPTION
[0027] The utility model will be described in detail below in combination with the drawings, and the description of this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model. In addition, the person skilled in the art can combine the features in the embodiments in this document and the features in different embodiments according to the description of this document.
[0028] The utility model implementation is as follows, please see Figures 1 to 3 The control valve group shown in the figure, specifically includes valve block 18, on valve block 18, that is Figure 1 As shown in the figure, detachable first electromagnetic valve 1 and second electromagnetic valve 13 are arranged on the upper portion, and first electromagnetic valve 1 and second electromagnetic valve 13 are arranged side by side and can be communicated with valve block 18 respectively. First flow regulating valve 2 and second flow regulating valve 16 are further arranged on valve block 18 respectively, and first flow regulating valve 2 and second flow regulating valve 16 are arranged on one side of first electromagnetic valve 1 and second electromagnetic valve 13 respectively, that is, the lower side shown in the figure. Valve block 18 is further provided with a plurality of overflow valves, and the plurality of overflow valves are arranged on one end of first electromagnetic valve 1 and second electromagnetic valve 13, that is, the lower end shown in the figure. Oil return port 5 is arranged on first electromagnetic valve 1 and second electromagnetic valve 13, and one side of oil return port 5, that is Figure 3The left side shown is also provided with a signal feedback port 6 for feeding back load information. The control valve group of the structure controls the flow in the hydraulic system by the first electromagnetic valve 1 and the second electromagnetic valve 13, and the first flow regulating valve 2 and the second flow regulating valve 16, and the signal feedback port 6 is arranged on one side of the oil return port 5, and in the working process, the flow in the hydraulic system is controlled by the first flow regulating valve 2 and the second flow regulating valve 16 and does not change with the change of the system pressure, and in general, the control valve group has the advantages of simple structure, high practicability and the like.
[0029] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 For the first electromagnetic valve 1 and the second electromagnetic valve 13, preferably, it is a three-position five-way electromagnetic reversing valve.
[0030] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 The control valve group further comprises a first check valve 3, the first check valve 3 is used to prevent the oil in the signal feedback port 6 from being reversely fed to the first electromagnetic valve 1, and the first check valve 3 is specifically arranged between the first electromagnetic valve 1 and the signal feedback port 6.
[0031] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 The control valve group further comprises a second check valve 17, the second check valve 17 is used to prevent the oil in the signal feedback port 6 from being reversely fed to the second electromagnetic valve 13, and the second check valve 17 is specifically arranged between the second electromagnetic valve 13 and the signal feedback port 6.
[0032] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 The control valve group further comprises a first damper 9, one end of the first damper 9, that is, the lower end shown in the figure, is communicated with the first check valve 3, and the other end of the first damper 9, that is, the upper end shown in the figure, is communicated with the first electromagnetic valve 1. Similarly, the control valve group further comprises a second damper 12, one end of the second damper 12, that is, the lower end shown in the figure, is communicated with the second check valve 17, and the other end of the second damper 12, that is, the upper end shown in the figure, is communicated with the second electromagnetic valve 13.
[0033] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 The overflow valve comprises a first overflow valve 4, the first overflow valve 4 is arranged on one side of the first electromagnetic valve 1, that is, the lower side shown in the figure, and can be communicated with the first electromagnetic valve 1.
[0034] On the basis of the above embodiment, another embodiment of the utility model is as shown in Figure 3 The overflow valve further comprises a second overflow valve 8, the second overflow valve 8 is arranged on one side of the second electromagnetic valve 13, that is, the lower side shown in the figure, and can be communicated with the second electromagnetic valve 13.
[0035] On the basis of the above embodiment, another embodiment of the utility model, as shown in Figure 3 The control valve group further comprises a first balance valve 10, which is arranged on one side of the first electromagnetic valve 1, i.e. the upper side shown in the figure, and can communicate with the first electromagnetic valve 1.
[0036] On the basis of the above embodiment, another embodiment of the utility model, as shown in Figure 3 The control valve group further comprises a second balance valve 11, which is arranged on one side of the second electromagnetic valve 13, i.e. the upper side shown in the figure, and can communicate with the second electromagnetic valve 13. In addition, the control valve group further comprises an oil inlet 7, which can communicate with the first electromagnetic valve 1 and the second electromagnetic valve 13 respectively.
[0037] The control valve group with the above structure controls the flow in the hydraulic system by the first flow regulating valve 2 and the second flow regulating valve 16, and the flow does not change with the change of the system pressure. At the same time, the first one-way valve 3 and the second one-way valve 17 are arranged to prevent the oil in the signal feedback port 6 from flowing back to the first electromagnetic valve 1 and the second electromagnetic valve 13, which avoids opening the signal feedback port 6 on one side of the oil inlet 7 and simplifies the structure. Overall, it has the advantages of simple structure and strong practicability.
[0038] In addition, the utility model further provides a hydraulic system, which comprises a control valve group, and a cylinder 14 and a motor 15 which can communicate with the control valve group respectively, and the control valve group is the control valve group as described above.
[0039] The hydraulic system with the above structure has the advantages of the control valve group.
[0040] The above description is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.
Claims
1. A control valve group, characterized by, The valve block is provided with detachable first and second electromagnetic valves arranged side by side and respectively in communication with the valve block. The valve block is further provided with first and second flow regulating valves arranged on one side of the first and second electromagnetic valves respectively. The valve block is further provided with a plurality of overflow valves arranged at one end of the first and second electromagnetic valves. The first and second electromagnetic valves are both provided with an oil return port, and the oil return port is further provided with a signal feedback port for feeding back load information.
2. The control valve block of claim 1, wherein The first and second electromagnetic valves are both three-position five-way electromagnetic reversing valves.
3. The control valve block of claim 2, wherein The control valve group further comprises a first check valve arranged between the first electromagnetic valve and the signal feedback port.
4. The control valve block of claim 3, wherein The control valve group further comprises a second check valve arranged between the second electromagnetic valve and the signal feedback port.
5. The control valve block of claim 4, wherein The control valve group further comprises a first damper, one end of which is in communication with the first check valve, and the other end of which is in communication with the first electromagnetic valve. The control valve group further comprises a second damper, one end of which is in communication with the second check valve, and the other end of which is in communication with the second electromagnetic valve.
6. The control valve block of claim 5, wherein The overflow valves comprise a first overflow valve arranged on one side of the first electromagnetic valve and in communication with the first electromagnetic valve.
7. The control valve block of claim 6, wherein The overflow valves further comprise a second overflow valve arranged on one side of the second electromagnetic valve and in communication with the second electromagnetic valve.
8. The control valve block of claim 7, wherein The control valve group further comprises a first balance valve arranged on one side of the first electromagnetic valve and in communication with the first electromagnetic valve.
9. The control valve block of claim 8, wherein, The control valve group further comprises a second balance valve arranged on one side of the second electromagnetic valve and in communication with the second electromagnetic valve.
10. A hydraulic system comprising a control valve group, and a cylinder and a motor respectively communicable with the control valve group, characterized by, The control valve group is any one of claims 1-9.