CN102392847A - Novel hot oil replacement device of helical conveyer - Google Patents
Novel hot oil replacement device of helical conveyer Download PDFInfo
- Publication number
- CN102392847A CN102392847A CN201110413468XA CN201110413468A CN102392847A CN 102392847 A CN102392847 A CN 102392847A CN 201110413468X A CN201110413468X A CN 201110413468XA CN 201110413468 A CN201110413468 A CN 201110413468A CN 102392847 A CN102392847 A CN 102392847A
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- deep fat
- valve
- damping hole
- shuttle valve
- pressure
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Abstract
The invention mainly relates to an engineering machinery hydraulic replacement device and particularly relates to a novel hot oil replacement device of a helical conveyer. The novel hot oil replacement device comprises a shell with a valve body socket, an overflow valve, a hot oil shuttle valve, a damping hole piece, two pressure cells and hydraulic oil pipe, wherein the inlet of the overflow valve is communicated with the outlet of the hot oil shuttle valve through the hydraulic oil pipe with the damping hole piece, the other end of the overflow valve is communicated with an oil tank interface through the hydraulic oil pipe, both sides of the other end of the hot oil shuttle valve are communicated with a closed type hydraulic system through the hydraulic oil pipe to form a high-pressure side A and a low-pressure side B, and the two pressure cells are arranged on both sides of the damping hole piece and are communicated with the inlet of the overflow valve and the outlet of the hot oil shuttle valve. The novel hot oil replacement device of the helical conveyer can be used for displacing hot oil from the closed type hydraulic system and solving the oil liquid degradation and temperature rise problems effectively.
Description
Technical field
The present invention relates generally to a kind of engineering machinery hydraulic displacement apparatus, the novel deep fat displacement apparatus of especially a kind of screw conveyor.
Background technique
Earth pressure balanced shield, EPBS is a kind of technology-intensive Important Project equipment that is exclusively used in weak soil subterranean tunnel engineering excavation; Screw conveyor is the important component part of earth pressure balanced shield, EPBS; The earth that it mainly is used for knife cutting being got off in the shield structure gas-tight silo is discharged the shield body; Keep earth pressure in the gas-tight silo simultaneously, keep the stable of excavation face soil.The screw conveyor hydraulic driving adopts closed system, and the hydraulic oil in the closed system is in running order always, and high low pressure transforms frequent; The fluid easy ageing; Various aspects of performance descends rapidly, system is caused very big harm, and system's temperature rise is very fast; Therefore need to replenish the deep fat that a part of fresh oil displaces isodose simultaneously, do not have Related product to relate to this field at present.
Summary of the invention
The object of the invention is to overcome the defective that existing procucts exist, and realizes the novel deep fat displacement apparatus of screw conveyor.
For realizing the foregoing invention purpose, technological scheme of the present invention is: the novel deep fat displacement apparatus of a kind of screw conveyor comprises the housing that has the valve body socket; Relief valve, deep fat shuttle valve, damping hole spare; Pressure-measuring head, hydraulic oil pipe, relief valve import and the outlet of deep fat shuttle valve are communicated with through the hydraulic oil pipe that has damping hole spare; The other end of relief valve is communicated with the fuel tank interface through hydraulic oil pipe, the other end both sides of deep fat shuttle valve respectively through hydraulic oil pipe and closed type hydraulic system each other high pressure side A and low voltage side B be connected, pressure-measuring head has two; Be arranged at damping hole spare both sides, and be communicated with relief valve import and the outlet of deep fat shuttle valve.
Relief valve and deep fat shuttle valve are cartridge valve, can make valve body compact more like this.
Damping hole spare is the plug-in type structure, and two damping hole spares are set, and one of them gives over to subsequent use damping hole spare.
The deep fat shuttle valve is the 3-position-3-way hydraulicchange-over valve.
Pressure-measuring head is the set inside one-way valve, the outer installment screw thread, and pressure gauge can be installed under the non-stop-machine state of system like this, through scyewed joint fixation pressure table.
The setting pressure of relief valve is 18 bar.
The working principle of the novel deep fat displacement apparatus of screw conveyor of the present invention: when screw conveyor rotates; Hydraulic system high pressure side and low voltage side oil pressure act on the control mouth of deep fat shuttle valve simultaneously; Because the high pressure side oil pressure is greater than low voltage side; The deep fat shuttle valve spool moves under the promotion of high pressure side oil, and low voltage side is communicated with.Low voltage side oil is through the deep fat shuttle valve, and damping hole spare and relief valve are got back to fuel tank, accomplishes the deep fat displacement.Low voltage side oil pressure relative fixed is about 24bar, and the relief valve set pressure on the deep fat piece is 18bar, and then damping hole spare pressure reduction is fixed, and is only relevant with the flow area of damping hole spare through the flow of damping hole spare.According to calculating the mapping table that can draw damping hole spare flow area and flow, control the deep fat replacement amount in view of the above.
Beneficial effect of the present invention:
1. the novel deep fat displacement apparatus of screw conveyor of the present invention is in time discharged deep fat through relief valve and deep fat shuttle valve, effectively solves oil degradation and problem of temperature rise.
2. the pressure-measuring head of the novel deep fat displacement apparatus of screw conveyor of the present invention can be under non-stop-machine state the installing pressure gauge, increase work efficiency.
3. the deep fat shuttle valve of the novel deep fat displacement apparatus of screw conveyor of the present invention and relief valve adopt cartridge valve, and the valve piece is compact more.
4. the novel deep fat displacement apparatus of screw conveyor of the present invention can be controlled the deep fat replacement amount owing to be provided with damping hole spare according to calculating.
Description of drawings
Fig. 1 is the structural representation of the novel deep fat displacement apparatus of screw conveyor;
Fig. 2 is the control principle figure of the novel deep fat displacement apparatus of screw conveyor.
Embodiment
Below in conjunction with accompanying drawing and through concrete mode of execution the novel deep fat displacement apparatus of screw conveyor of the present invention is done more detailed description.
Embodiment 1:
Referring to Fig. 1-Fig. 2: 1-relief valve, the subsequent use damping hole spare of 2-, 3-deep fat shuttle valve, 4-fuel tank interface, 5-pressure-measuring head, 6-oil circuit interface, 7-damping hole spare.
Deep fat shuttle valve 3 is the 3-position-3-way hydraulicchange-over valve.
Pressure-measuring head 5 is the set inside one-way valve, the outer installment screw thread, and pressure gauge can be installed under the non-stop-machine state of system like this, through scyewed joint fixation pressure table.
The setting pressure of relief valve 1 is 18 bar.
Claims (6)
1. the novel deep fat displacement apparatus of screw conveyor is characterized in that: comprise the housing that has the valve body socket, relief valve; The deep fat shuttle valve, damping hole spare, pressure-measuring head; Hydraulic oil pipe, relief valve import and the outlet of deep fat shuttle valve are communicated with through the hydraulic oil pipe that has damping hole spare, and the other end of relief valve is communicated with the fuel tank interface through hydraulic oil pipe; High pressure side A and low voltage side B are connected each other through hydraulic oil pipe and closed type hydraulic system respectively in the other end both sides of deep fat shuttle valve; Pressure-measuring head has two, is arranged at damping hole spare both sides, and is communicated with relief valve import and the outlet of deep fat shuttle valve.
2. the novel deep fat displacement apparatus of screw conveyor as claimed in claim 1 is characterized in that: said relief valve and deep fat shuttle valve are cartridge valve.
3. the novel deep fat displacement apparatus of screw conveyor as claimed in claim 1, it is characterized in that: said damping hole spare is the plug-in type structure, and two damping hole spares are set, one of them is subsequent use damping hole spare.
4. the novel deep fat displacement apparatus of screw conveyor as claimed in claim 1 is characterized in that: said deep fat shuttle valve is the 3-position-3-way hydraulicchange-over valve.
5. the novel deep fat displacement apparatus of screw conveyor as claimed in claim 1 is characterized in that: said pressure-measuring head is the set inside one-way valve, the outer installment screw thread.
6. the novel deep fat displacement apparatus of screw conveyor as claimed in claim 1 is characterized in that: the setting pressure of said relief valve is 18 bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413468XA CN102392847A (en) | 2011-12-10 | 2011-12-10 | Novel hot oil replacement device of helical conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110413468XA CN102392847A (en) | 2011-12-10 | 2011-12-10 | Novel hot oil replacement device of helical conveyer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392847A true CN102392847A (en) | 2012-03-28 |
Family
ID=45860211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110413468XA Pending CN102392847A (en) | 2011-12-10 | 2011-12-10 | Novel hot oil replacement device of helical conveyer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102392847A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2307731Y (en) * | 1997-04-30 | 1999-02-17 | 浙江大学 | Electrohydraulic proportion controlled closed power stoering gear for sonar winch |
| JP2004324838A (en) * | 2003-04-28 | 2004-11-18 | Shin Caterpillar Mitsubishi Ltd | Hydraulic circuit for construction machinery |
| CN201111563Y (en) * | 2007-09-27 | 2008-09-10 | 天津市天锻压力机有限公司 | Hydraulic integration liftout valve block |
| CN201747703U (en) * | 2010-05-25 | 2011-02-16 | 长沙中联重工科技发展股份有限公司 | Sealed hydraulic system |
| CN202326537U (en) * | 2011-12-10 | 2012-07-11 | 中铁隧道装备制造有限公司 | Novel hot oil replacement device for spiral conveyor |
-
2011
- 2011-12-10 CN CN201110413468XA patent/CN102392847A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2307731Y (en) * | 1997-04-30 | 1999-02-17 | 浙江大学 | Electrohydraulic proportion controlled closed power stoering gear for sonar winch |
| JP2004324838A (en) * | 2003-04-28 | 2004-11-18 | Shin Caterpillar Mitsubishi Ltd | Hydraulic circuit for construction machinery |
| CN201111563Y (en) * | 2007-09-27 | 2008-09-10 | 天津市天锻压力机有限公司 | Hydraulic integration liftout valve block |
| CN201747703U (en) * | 2010-05-25 | 2011-02-16 | 长沙中联重工科技发展股份有限公司 | Sealed hydraulic system |
| CN202326537U (en) * | 2011-12-10 | 2012-07-11 | 中铁隧道装备制造有限公司 | Novel hot oil replacement device for spiral conveyor |
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Application publication date: 20120328 |