CN102996549A - Pressure reducing device for water pressure testing of rubber molding equipment - Google Patents
Pressure reducing device for water pressure testing of rubber molding equipment Download PDFInfo
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- CN102996549A CN102996549A CN2012104272222A CN201210427222A CN102996549A CN 102996549 A CN102996549 A CN 102996549A CN 2012104272222 A CN2012104272222 A CN 2012104272222A CN 201210427222 A CN201210427222 A CN 201210427222A CN 102996549 A CN102996549 A CN 102996549A
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- oil
- spool
- valve body
- water pressure
- cavity
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Abstract
The invention discloses a pressure reducing device for water pressure testing of rubber molding equipment. The pressure reducing device for water pressure testing of the rubber molding equipment comprises a valve body and a valve core; the valve core is arranged in the central part in the valve body; an oil intake cavity is arranged in the central part of the valve core and the lower end surface of the valve core is provided with an oil discharge cavity; and an overflowing pipeline is added below the oil intake cavity and is communicated with the oil discharge cavity. The pressure reducing device for water pressure testing of the rubber molding equipment provided by the invention has the beneficial effects that the overflowing pipeline capable of being communicated to the oil discharge cavity is arranged below the oil intake cavity, so that excessive oil generated in oil intake in water pressure testing can be dredged to the oil discharge cavity; and the problem that the traditional device operates at the beginning only depending on the single pipeline of the oil intake cavity, and oil amount balance at the oil intake part can not be guaranteed is solved, and timely replacement or maintenance can be conveniently carried out.
Description
Technical field
The present invention relates to the hydraulics field, relate in particular to a kind of decompressor of rubber-moulding equipment hydraulic pressure test.
Background technique
At present, rubber forming machine is to the hydraulic equipment of steel pipe water pressure test, must guarantee oil-water balance state in whole hydrostatic test process, must guarantee that in this process Simultaneous Pressure changes, otherwise can occur steel pipe is damaged by pressure compressive strain and do not reach the purpose of pressure testing.General operation is that at oil pressure mouth dress proportional pressure-reducing valve or proportional pressure control valve, pressure transducer gathers the pressure data of water pump mouth at water pump mouth dress pressure transducer, pass to PLC, PLC sends instructions to Proportional valve again, produces an oil pressure that is slightly larger than hydraulic pressure, keeps this oil-water balance.In the process that keeps the oil-feed balance, only rely on the single pipeline of oil suction chamber to carry out startup operation, can't guarantee that oil circuit to the oil-feed balance of center spool chamber, the phenomenons such as input pressure is larger or less, fuel-flow control is inhomogeneous can occur, its modular construction also is unfavorable for changing timely or safeguarding.
Summary of the invention
The purpose of this invention is to provide a kind of with overflow passage, be conducive to realize the oil-water balance requirement, be convenient to oil suction chamber and control decompressor with the rubber-moulding equipment hydraulic pressure test of safeguarding, to solve many deficiencies of prior art.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of decompressor of rubber-moulding equipment hydraulic pressure test, comprise valve body and spool, the valve inner center position arranges spool, be positioned at the center spool position and be provided with an oil suction chamber and this spool lower end surface and be provided with one and go out oil pocket, described oil suction chamber below is set up one section overflow passage and this overflow passage and is gone out oil pocket and be communicated with.
The valve chamber that is arranged in the spool outside offers drain tap, is positioned at body cavity one control mouth is set; The inner two ends of described overflow passage respectively arrange a movable plug.
The beneficial effect of the decompressor of rubber-moulding equipment hydraulic pressure test of the present invention is: by in the oil suction chamber below overflow passage that can be communicated to out oil pocket being set, the too much oil mass dredging that produces in the time of can making hydrostatic test oil-feed is to going out oil pocket, solved conventional apparatus and only relied on the single pipeline of oil suction chamber to carry out startup operation and the problem that can't guarantee the equilibrium of oil-feed part oil mass, be convenient to change timely or safeguard.
Description of drawings
The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing of the decompressor of the described rubber-moulding equipment of embodiment of the invention hydraulic pressure test.
Among the figure: 1, valve body; 2, drain tap; 3, go out oil pocket; 4, oil suction chamber; 5, control mouth; 6, spool; 7, overflow passage; 8, movable plug.
Embodiment
As shown in Figure 1, the decompressor of the described rubber-moulding equipment of embodiment of the invention hydraulic pressure test, comprise valve body 1 and spool 6, described valve body 1 inside center position arranges spool 6, be positioned at valve body 1 wherein the inner chamber of an end one section control mouthfuls 5 is set, be positioned at spool 6 center portions and offer an oil suction chamber 4 and this spool 6 lower end surfaces and be provided with one and go out oil pocket 3; Valve body 1 chamber that is arranged in spool 6 outsides is offered drain tap 2; Need emphasis to be pointed out that, described oil suction chamber 4 belows are set up one section overflow passage 7 and this overflow passage 7 and are gone out oil pocket 3 and be communicated with, these overflow passage 7 inner two ends respectively arrange a movable plug 8, have solved conventional apparatus and have only relied on the single pipeline of oil suction chamber to carry out startup operation and the problem that can't guarantee the equilibrium of oil-feed part oil mass.
Claims (4)
1. the decompressor of a rubber-moulding equipment hydraulic pressure test, comprise valve body (1) and spool (6), valve body (1) inside center position arranges spool (6), it is characterized in that: be positioned at spool (6) center portion and be provided with an oil suction chamber (4) and this spool (6) lower end surface and be provided with one and go out oil pocket (3), described oil suction chamber (4) below is set up one section overflow passage (7) and this overflow passage (7) and is gone out oil pocket (3) and be communicated with.
2. the decompressor of a kind of rubber-moulding equipment hydraulic pressure test as claimed in claim 1 is characterized in that: valve body (1) chamber that is arranged in spool (6) outside is offered drain tap (2).
3. the decompressor of a kind of rubber-moulding equipment hydraulic pressure test as claimed in claim 1 is characterized in that: be positioned at valve body (1) inner chamber one control mouthful (5) is set.
4. the decompressor of a kind of rubber-moulding equipment hydraulic pressure test as claimed in claim 1, it is characterized in that: the inner two ends of described overflow passage (7) respectively arrange a movable plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104272222A CN102996549A (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure testing of rubber molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104272222A CN102996549A (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure testing of rubber molding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996549A true CN102996549A (en) | 2013-03-27 |
Family
ID=47925528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104272222A Pending CN102996549A (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure testing of rubber molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996549A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785849A (en) * | 1985-06-12 | 1988-11-22 | Daikin Industries Ltd. | Pressure reducing valve assembly |
| CN1414275A (en) * | 2002-11-21 | 2003-04-30 | 浙江大学 | Parallel valve port type pressure reduction valve |
| CN2851673Y (en) * | 2005-08-10 | 2006-12-27 | 冯涛 | Two-position four-way rotary valve for controlling self-unloading vehicle hydraulic system |
| CN201110412Y (en) * | 2007-11-29 | 2008-09-03 | 段会强 | Fluid pressure reducing valve |
| CN202228454U (en) * | 2011-09-22 | 2012-05-23 | 华自科技股份有限公司 | Hydraulic relief valve |
| CN202381435U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Shunting and pressure reducing valve |
| CN202381433U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | External-control differential reducing valve for hydraulic device |
| CN202851496U (en) * | 2012-10-31 | 2013-04-03 | 无锡鸿声铝业有限公司 | Pressure reducing device for water pressure test of rubber forming equipment |
-
2012
- 2012-10-31 CN CN2012104272222A patent/CN102996549A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785849A (en) * | 1985-06-12 | 1988-11-22 | Daikin Industries Ltd. | Pressure reducing valve assembly |
| CN1414275A (en) * | 2002-11-21 | 2003-04-30 | 浙江大学 | Parallel valve port type pressure reduction valve |
| CN2851673Y (en) * | 2005-08-10 | 2006-12-27 | 冯涛 | Two-position four-way rotary valve for controlling self-unloading vehicle hydraulic system |
| CN201110412Y (en) * | 2007-11-29 | 2008-09-03 | 段会强 | Fluid pressure reducing valve |
| CN202381435U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Shunting and pressure reducing valve |
| CN202381433U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | External-control differential reducing valve for hydraulic device |
| CN202228454U (en) * | 2011-09-22 | 2012-05-23 | 华自科技股份有限公司 | Hydraulic relief valve |
| CN202851496U (en) * | 2012-10-31 | 2013-04-03 | 无锡鸿声铝业有限公司 | Pressure reducing device for water pressure test of rubber forming equipment |
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Application publication date: 20130327 |