CN202851496U - Pressure reducing device for water pressure test of rubber forming equipment - Google Patents
Pressure reducing device for water pressure test of rubber forming equipment Download PDFInfo
- Publication number
- CN202851496U CN202851496U CN 201220566982 CN201220566982U CN202851496U CN 202851496 U CN202851496 U CN 202851496U CN 201220566982 CN201220566982 CN 201220566982 CN 201220566982 U CN201220566982 U CN 201220566982U CN 202851496 U CN202851496 U CN 202851496U
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- Prior art keywords
- oil
- valve body
- pressure test
- spool
- reducing device
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Abstract
The utility model discloses a pressure reducing device for a water pressure test of rubber forming equipment. The pressure reducing device comprises a valve body a valve core. The valve core is arranged at the center inside the valve body. An oil inlet cavity is arranged at the center of the valve core, and an oil outlet cavity is arranged in the valve body at the tail end of the valve core. An overflow pipeline is further arranged below the oil inlet cavity and is communicated with the oil outlet cavity. The pressure reducing device has the advantages that the overflow pipeline which is communicated with the oil outlet cavity is arranged below the oil inlet cavity so that excess oil produced at oil inlet time in the water pressure test can be dredged to the oil outlet cavity, the problem that a traditional device only depends on a single pipeline of an oil inlet cavity for starting operation so as not to be capable of ensuring oil balance at an oil inlet part is solved, and timely replacement and maintenance can be conducted conveniently.
Description
Technical field
The utility model relates to the hydraulics field, relates 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.
The model utility content
The purpose of this utility model 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.
The purpose of this utility model 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 described in the utility model 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 prior device 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 utility model with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing of the decompressor of the described rubber-moulding equipment of the utility model embodiment 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 the utility model embodiment 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 prior device 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 |
|---|---|---|---|
| CN 201220566982 CN202851496U (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure test of rubber forming equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220566982 CN202851496U (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure test of rubber forming equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851496U true CN202851496U (en) | 2013-04-03 |
Family
ID=47982703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220566982 Expired - Fee Related CN202851496U (en) | 2012-10-31 | 2012-10-31 | Pressure reducing device for water pressure test of rubber forming equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996549A (en) * | 2012-10-31 | 2013-03-27 | 无锡鸿声铝业有限公司 | Pressure reducing device for water pressure testing of rubber molding equipment |
-
2012
- 2012-10-31 CN CN 201220566982 patent/CN202851496U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996549A (en) * | 2012-10-31 | 2013-03-27 | 无锡鸿声铝业有限公司 | Pressure reducing device for water pressure testing of rubber molding equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20131031 |