CN216895126U - Structure for avoiding non-pressure maintaining of pilot oil way of liquid filling valve for hydraulic system - Google Patents
Structure for avoiding non-pressure maintaining of pilot oil way of liquid filling valve for hydraulic system Download PDFInfo
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- CN216895126U CN216895126U CN202123137265.0U CN202123137265U CN216895126U CN 216895126 U CN216895126 U CN 216895126U CN 202123137265 U CN202123137265 U CN 202123137265U CN 216895126 U CN216895126 U CN 216895126U
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Abstract
The utility model provides a structure for avoiding the non-pressure-maintaining of a pilot oil path of a prefill valve for a hydraulic system. The novel structure that avoids pilot oil circuit of prefill valve for hydraulic system not pressurize that provides uses independent energy storage ware to act as the upright mill hydraulic system who grinds the oil source of prefill valve pilot oil circuit, has avoided prefill valve pilot oil circuit to reveal the problem that influences upright mill hydraulic system pressurize performance, has improved the quality of upright mill production product, has improved upright mill hydraulic system's performance and life-span.
Description
Technical Field
The utility model relates to the technical field of vertical mill hydraulic systems, in particular to a structure for avoiding the non-pressure maintaining of a pilot oil way of a liquid filling valve for a hydraulic system.
Background
The use condition of the grinding hydraulic system without a rod cavity and an energy accumulator is as follows: in the normal grinding process of the vertical mill, in order to avoid the suction phenomenon of a rodless cavity of the pressurized hydraulic cylinder when the pressurized hydraulic cylinder frequently vibrates (oil is filled into the rodless cavity and generates negative pressure to press oil from an oil tank into the rodless cavity by the aid of the rodless cavity, and the purpose is to ensure that sealing elements, a cylinder barrel, a piston and the like of the hydraulic cylinder are not damaged due to insufficient lubrication or have short service life), the rodless cavity of the pressurized hydraulic cylinder and an oil tank of a hydraulic station of the vertical mill are required to be as smooth as possible, so that instantaneous large flow is ensured, and oil is pressed from the oil tank to the rodless cavity by the aid of atmospheric pressure.
The traditional method comprises the following steps: 1. the large-drift-diameter hydraulic control one-way valve is used, but has back pressure and insufficient instantaneous through-flow capacity, and the method is not generally adopted; 2. the liquid filling valve is used, so that the current capacity at any time is ensured, and no back pressure exists, but a pilot oil way of the liquid filling valve is communicated with a pressure maintaining loop of the vertical mill hydraulic system, and the pilot oil way of the liquid filling valve is clearly leaked when the pressure maintaining loop is higher than 9Mpa, so that the pressure maintaining performance of the vertical mill hydraulic system is directly influenced.
If the prefill valve is used, the problem that a pilot oil way of the prefill valve leaks is urgently needed to be solved or avoided.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the utility model provides a structure for avoiding the situation that the pilot oil path of the liquid filling valve for the hydraulic system is not kept pressure.
The utility model provides a structure for avoiding the non-pressure maintaining of a pilot oil way of a prefill valve for a hydraulic system, which comprises the following components:
a flushing valve;
and the pilot oil way is independently connected with the flushing valve to provide an oil source for the flushing valve.
According to the above technical scheme of the utility model, the structure for avoiding the pilot oil path of the prefill valve for the hydraulic system from not maintaining pressure can also have the following additional technical characteristics:
in the above-described aspect, the pilot oil passage includes:
an accumulator;
the first pipeline is connected with the energy accumulator;
the electromagnetic ball valve is arranged on the first pipeline;
and one end of the second pipeline is connected with the electromagnetic ball valve, and the other end of the second pipeline is connected with the flushing valve.
In the above technical solution, further comprising:
and the pressure transmitter is arranged on the second pipeline.
In the technical scheme, the energy accumulator is in a gas loading type.
In the technical scheme, the energy storage gas of the energy accumulator is nitrogen, and the pressure of the nitrogen is 4 MPa.
In the above technical solution, the accumulator volume is 4L.
In the above technical solution, the method further comprises:
and the pilot oil return circuit is connected with the electromagnetic ball valve and is communicated with the pilot oil way through the ball valve.
In the above technical solution, the method further comprises:
and the pilot oil supply loop is communicated with the pilot oil way.
Compared with the prior art, the structure for avoiding the pilot oil path of the prefill valve for the hydraulic system from not maintaining pressure has the following beneficial effects:
the vertical mill hydraulic system using the independent energy accumulator as the oil source of the pilot oil path of the prefill valve avoids the problem that the pressure maintaining performance of the vertical mill hydraulic system is influenced by leakage of the pilot oil path of the prefill valve, improves the quality of products produced by the vertical mill, and improves the performance and service life of the vertical mill hydraulic system.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a connection diagram of a structure in which a pilot oil passage of a charge valve for an avoidance hydraulic system according to the present invention is not pressure-maintained.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
1. a flushing valve; 2. a pilot oil path; 21. an accumulator; 22. a first pipeline; 23. an electromagnetic ball valve; 24. A second pipeline; 25. a pressure transmitter; 3. a pilot oil return circuit; 4. a pilot oil supply circuit; 5. a ball valve.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
The following describes a structure for avoiding the non-pressure-holding of a pilot oil path of a charging valve for a hydraulic system, which is provided according to some embodiments of the present invention, with reference to fig. 1.
Some embodiments of the present application provide a structure that avoids a pilot oil passage of a prefill valve for a hydraulic system from being pressure-maintained.
As shown in fig. 1, a first embodiment of the present invention provides a structure for avoiding the pilot oil path of a prefill valve for a hydraulic system from maintaining pressure, including a flush valve 1; and the pilot oil path 2 is independently connected with the flushing valve 1 to provide an oil source for the flushing valve 1.
In a second embodiment of the present invention, a structure for avoiding a pilot oil path of a charging valve for a hydraulic system from being pressure-not-maintained is provided, and in addition to the first embodiment, the pilot oil path 2 includes:
an accumulator 21;
a first line 22 connecting the accumulator 21;
an electromagnetic ball valve 23 provided in the first pipe 22;
and one end of the second pipeline 24 is connected with the electromagnetic ball valve 23, and the other end of the second pipeline is connected with the flushing valve 1.
In the embodiment, the pilot oil way 2 is directly connected with the independent energy accumulator 21, so that the energy accumulator 21 is suitable to be used as an oil source of the pilot oil way 2, the problem that the pressure maintaining performance of a vertical mill hydraulic system is affected due to leakage of the pilot oil way of the liquid filling valve can be avoided, the quality of products produced by the vertical mill is improved, and the performance and the service life of the vertical mill hydraulic system are improved.
A third embodiment of the present invention provides a structure for avoiding a pilot oil path of a prefill valve for a hydraulic system from being pressure-maintained, and further includes, in addition to any of the embodiments described above:
and a pressure transmitter 25 disposed on the second pipe 24.
In this embodiment, the pressure transmitter 25 is selected according to actual working conditions, and the specific model is not limited.
The fourth embodiment of the present invention proposes a structure for avoiding the pilot oil path of the charging valve for the hydraulic system from maintaining pressure, and on the basis of any of the above embodiments, the accumulator 21 is of a gas-charging type.
In the present embodiment, the accumulator 21 is gas-loaded, so that the accuracy and timeliness of operation can be ensured. The specific type of the accumulator 21 is not limited, and may be selected according to the actual working condition.
In a fifth embodiment of the present invention, a structure is provided to avoid the pilot oil path of the charging valve for the hydraulic system from not maintaining pressure, and in addition to any of the above embodiments, the charging gas of the accumulator 21 is nitrogen, and the pressure of the nitrogen is 4 MPa.
In the embodiment, nitrogen is selected as the energy storage gas, so that the method has the advantages of high safety and the like.
In a sixth embodiment of the present invention, a structure is provided for avoiding a pressure failure in a pilot oil path of a charging valve for a hydraulic system, and in addition to any of the above embodiments, the accumulator 21 has a capacity of 4L.
In the present embodiment, 4L of accumulator 21 volume is selected. Of course, different volumes may be selected according to actual conditions.
A seventh embodiment of the present invention provides a structure for avoiding a pilot oil path of a prefill valve for a hydraulic system from being pressure-maintained, and further includes, in addition to any of the embodiments described above:
and the pilot oil return circuit 3 is connected with the electromagnetic ball valve 23, and the pilot oil return circuit 3 is communicated with the pilot oil way 2 through a ball valve 5.
In the present embodiment, the pilot oil return circuit 3 is used for returning the oil medium in the pipe and directly discharging the oil medium. In addition, the ball valve 5 is in an open state in the maintenance process, and the ball valve 5 in a normal working state is in a closed state.
An eighth embodiment of the present invention provides a structure for avoiding a pilot oil path of a prefill valve for a hydraulic system from being pressure-maintained, and the structure further includes, in addition to any of the embodiments:
and a pilot oil supply circuit 4 communicating with the pilot oil passage 2.
In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a structure that avoids guide's oil circuit of prefill valve for hydraulic system not pressurize which characterized in that includes:
a flushing valve (1);
the pilot oil way (2) is independently connected with the flushing valve (1) to provide an oil source for the flushing valve (1);
the pilot oil path (2) includes:
an accumulator (21);
a first line (22) connecting the accumulator (21);
an electromagnetic ball valve (23) disposed in the first pipeline (22);
and one end of the second pipeline (24) is connected with the electromagnetic ball valve (23), and the other end of the second pipeline is connected with the flushing valve (1).
2. The structure for avoiding the pressure loss in the pilot oil passage of the prefill valve for the hydraulic system according to claim 1, further comprising:
and a pressure transmitter (25) provided to the second pipe (24).
3. The structure of avoiding the pilot oil passage of the charge valve for the hydraulic system as recited in claim 2, wherein,
the accumulator (21) is gas-charged.
4. The structure for avoiding the pressure lack of the pilot oil path of the charging valve for the hydraulic system according to claim 3, wherein the energy storage gas of the energy accumulator (21) is nitrogen gas, and the pressure of the nitrogen gas is 4 MPa.
5. The structure that the pilot oil passage of the prefill valve for an evasive hydraulic system does not hold pressure according to claim 4, wherein the accumulator (21) has a volume of 4L.
6. The structure of avoiding the pilot oil passage of the charging valve for the hydraulic system without pressure holding according to any one of claims 1 to 5, characterized by further comprising:
and the pilot oil return circuit (3) is connected with the electromagnetic ball valve (23), and the pilot oil return circuit (3) is communicated with the pilot oil way (2) through a ball valve (5).
7. The structure of avoiding the pilot oil path of the charging valve for the hydraulic system from being pressurized according to any one of claims 1 to 5, characterized by further comprising:
and the pilot oil supply loop (4) is communicated with the pilot oil path (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137265.0U CN216895126U (en) | 2021-12-14 | 2021-12-14 | Structure for avoiding non-pressure maintaining of pilot oil way of liquid filling valve for hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123137265.0U CN216895126U (en) | 2021-12-14 | 2021-12-14 | Structure for avoiding non-pressure maintaining of pilot oil way of liquid filling valve for hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895126U true CN216895126U (en) | 2022-07-05 |
Family
ID=82205181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123137265.0U Active CN216895126U (en) | 2021-12-14 | 2021-12-14 | Structure for avoiding non-pressure maintaining of pilot oil way of liquid filling valve for hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216895126U (en) |
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2021
- 2021-12-14 CN CN202123137265.0U patent/CN216895126U/en active Active
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