CN220667983U - Overflow valve - Google Patents
Overflow valve Download PDFInfo
- Publication number
- CN220667983U CN220667983U CN202322383770.6U CN202322383770U CN220667983U CN 220667983 U CN220667983 U CN 220667983U CN 202322383770 U CN202322383770 U CN 202322383770U CN 220667983 U CN220667983 U CN 220667983U
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- CN
- China
- Prior art keywords
- overflow valve
- vacuum
- oil inlet
- inlet pipe
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 abstract description 31
- 239000010720 hydraulic oil Substances 0.000 abstract description 24
- 238000000034 method Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses an overflow valve, which belongs to the technical field of hydraulic systems and comprises an overflow valve main body, wherein an oil inlet is formed in the overflow valve main body and comprises a sealing ring, an oil inlet pipe and a connecting flange, a vacuum sleeve is arranged on the outer side of one section of the oil inlet pipe, a vacuum air outlet is formed in the vacuum sleeve, and a micropore ventilation pipe is selected as the oil inlet pipe positioned on the inner side of the vacuum sleeve. Through the structure of advance oil pipe, the gas in the hydraulic oil is effectively sucked out to reduce the gas content in the hydraulic oil, make the overflow valve when using, the gas content in the hydraulic oil is low, and hydraulic oil pressure is more stable, and the fault rate is lower.
Description
Technical Field
The utility model belongs to the technical field of overflow valves, and particularly relates to an overflow valve.
Background
The overflow valve is a hydraulic pressure control valve, and mainly plays roles of constant pressure overflow, pressure stabilization, system unloading and safety protection in hydraulic equipment. The overflow valve has a plurality of fault expression forms in the use process, and the overflow valve mainly has noise and vibration which occupy most faults, and is mainly caused by uneven pressure.
Causes of uneven pressure of hydraulic oil in the overflow valve are various, and the bubble contained in the hydraulic oil is one cause of uneven pressure of the hydraulic system, and more gas is contained in the hydraulic oil, so that uneven pressure of the hydraulic oil is caused in the overflow valve, and then the overflow valve is subjected to noise and vibration faults, so that the stability of the hydraulic system is influenced, and the service life of the overflow valve is also influenced. In the existing overflow valve, a structure for eliminating gas in oil is lacked, and the use effect is general.
Disclosure of Invention
The utility model aims to provide an overflow valve so as to solve the problem of the prior overflow valve in the use process.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the overflow valve comprises an overflow valve main body, wherein an oil inlet is formed in the overflow valve main body and comprises a sealing ring, an oil inlet pipe and a connecting flange, a section of the oil inlet pipe is provided with a vacuum sleeve, a vacuum air outlet is formed in the vacuum sleeve, and the oil inlet pipe located on the inner side of the vacuum sleeve is a micropore ventilation pipe.
Preferably, the inner diameter of the vacuum sleeve is larger than the outer diameter of the oil inlet pipe.
Preferably, the vacuum sleeve is in sealing connection with the oil inlet pipe, and a vacuum cavity is formed between the vacuum sleeve and the oil inlet pipe.
Preferably, the vacuum air outlet is connected with an external vacuum pump.
Compared with the prior art, the utility model has the beneficial effects that:
through the structure of advance oil pipe, the gas in the hydraulic oil is effectively sucked out to reduce the gas content in the hydraulic oil, make the overflow valve when using, the gas content in the hydraulic oil is low, and hydraulic oil pressure is more stable, and the fault rate is lower.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model;
fig. 2 is a schematic view of the oil inlet structure of the present utility model.
In the figure: 1. an overflow valve body; 21. a seal ring; 22. an oil inlet pipe; 23. a connecting flange; 24. a vacuum sleeve; 25. a vacuum air outlet; 26. a microporous ventilation tube; 27. a vacuum chamber.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an overflow valve comprises an overflow valve main body 1, wherein an oil inlet is arranged on the overflow valve main body 1, the oil inlet comprises a sealing ring 21, an oil inlet pipe 22 and a connecting flange 23, a vacuum sleeve 24 is arranged on the outer side of one section of the oil inlet pipe 22, a vacuum air outlet 25 is arranged on the vacuum sleeve 24, and a micropore ventilation pipe 26 is selected as the oil inlet pipe 22 positioned on the inner side of the vacuum sleeve 24.
The technical scheme provides an exhaust overflow valve structure aiming at the problems that the existing overflow valve is uneven in pressure and noise and vibration are caused by more gas content in hydraulic oil, and particularly, a vacuum sleeve 24 is sleeved on the outer side of an oil inlet pipe 22 of the overflow valve, a micropore ventilation pipe 26 which is only breathable and impermeable to liquid is selected as the oil inlet pipe 22 on the inner side of the vacuum sleeve 24, in the use process, the inside of a vacuum pump is kept to be a vacuum environment through an external vacuum pump, hydraulic oil enters the vacuum environment through the micropore ventilation pipe 26 when passing through the section of the micropore ventilation pipe 26 of the oil inlet pipe 22, the hydraulic oil is discharged from the vacuum environment, the micropore ventilation pipe 26 is made of a polymer material which only penetrates through the gas, the hydraulic oil can normally circulate from the micropore ventilation pipe 26, and the gas is discharged under the action of the pressure difference of the inner side and the outer side of the micropore ventilation pipe 26, so that the gas in the hydraulic oil is effectively reduced.
Further, the inner diameter of the vacuum sleeve 24 is larger than the outer diameter of the oil feed pipe 22.
Further, the vacuum sleeve 24 is connected with the oil inlet pipe 22 in a sealing manner, and a vacuum cavity 27 is formed between the vacuum sleeve 24 and the oil inlet pipe 22.
Through the technical scheme, the vacuum cavity 27 formed between the vacuum sleeve 24 and the oil inlet pipe 22 is used for discharging the gas in the hydraulic oil, so that the gas content in the hydraulic oil is reduced, and the pressure of the hydraulic oil is kept stable in the using process of the overflow valve.
Further, the vacuum air outlet 25 is connected to an external vacuum pump.
By this technical scheme, the outside vacuum pump is used for keeping the vacuum cavity 27 in the vacuum negative pressure environment, so that the gas in the hydraulic oil can be effectively sucked out.
Working principle: according to the scheme, the periphery of the oil inlet pipe 22 of the overflow valve is hermetically sleeved with the vacuum sleeve 24, a vacuum cavity 27 is formed between the vacuum sleeve 24 and the oil inlet pipe 22 and is connected with an external vacuum pump, the vacuum cavity 27 is always kept in a vacuum negative pressure environment, the oil inlet pipe 22 is located inside the vacuum sleeve 24 and is provided with the micropore ventilation pipe 26, and gas in hydraulic oil can enter the vacuum cavity 27 from the hydraulic oil and be discharged under the action of internal and external air pressure difference, so that the content of the gas in the hydraulic oil is effectively reduced, the pressure is stable when the overflow valve is used, and the failure rate is low.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An overflow valve, characterized in that: the overflow valve comprises an overflow valve body, wherein an oil inlet is formed in the overflow valve body and comprises a sealing ring, an oil inlet pipe and a connecting flange, a section of the oil inlet pipe is provided with a vacuum sleeve outside the oil inlet pipe, a vacuum air outlet is formed in the vacuum sleeve, and the oil inlet pipe located inside the vacuum sleeve is a micropore ventilation pipe.
2. An overflow valve as claimed in claim 1, wherein: the inner diameter of the vacuum sleeve is larger than the outer diameter of the oil inlet pipe.
3. An overflow valve as claimed in claim 1, wherein: the vacuum sleeve is connected with the oil inlet pipe in a sealing way, and a vacuum cavity is formed between the vacuum sleeve and the oil inlet pipe.
4. An overflow valve as claimed in claim 1, wherein: the vacuum air outlet is connected with an external vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322383770.6U CN220667983U (en) | 2023-09-04 | 2023-09-04 | Overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322383770.6U CN220667983U (en) | 2023-09-04 | 2023-09-04 | Overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220667983U true CN220667983U (en) | 2024-03-26 |
Family
ID=90335385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322383770.6U Active CN220667983U (en) | 2023-09-04 | 2023-09-04 | Overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220667983U (en) |
-
2023
- 2023-09-04 CN CN202322383770.6U patent/CN220667983U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |