CN2568864Y - Valve group feedback device for hydraulic station - Google Patents
Valve group feedback device for hydraulic station Download PDFInfo
- Publication number
- CN2568864Y CN2568864Y CN 02265654 CN02265654U CN2568864Y CN 2568864 Y CN2568864 Y CN 2568864Y CN 02265654 CN02265654 CN 02265654 CN 02265654 U CN02265654 U CN 02265654U CN 2568864 Y CN2568864 Y CN 2568864Y
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- hydraulic
- oil
- valve
- passage
- pinboard
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Abstract
The utility model relates to a group valve feedback device for a hydraulic station of a sedimentation type sludge dewatering horizontal spiral centrifugal machine hydraulic differential mechanism. The utility model is composed of a one-way valve arranged on an adapter plate, an oil filter, a hydraulic-electric pressure relay, a pressure sensor and an overflow valve, wherein, an oil inlet of the one-way valve is communicated with the oil inlet of the overflow valve via a passage in the adapter plate, and an oil outlet of the one-way valve is communicated with the oil inlet of the oil filter via the passage in the adapter plate. The oil outlet of the oil filter is respectively connected with the hydraulic-electric pressure relay and the pressure sensor via the passage in the adapter plate, and the signal output ports of the hydraulic-electric pressure relay and the pressure sensor are connected with a signal input port of a frequency conversion control box via connecting conducting wires. When oil pressure in a pipeline of the adapter plate varies, pressure change signals are input into the frequency conversion control box by the hydraulic-electric pressure relay and the pressure sensor via the connecting conducting wires in order to regulate the flow of a hydraulic system, and thus the flow and the pressure of the hydraulic system can be together increased or decreased proportionally.
Description
Technical field:
The utility model relates to a kind of hydraulic machine, valve group feedback means in the hydraulic station, the valve group feedback means that particularly relates to a kind of hydraulic station of centrifuge technical field, especially a kind of valve group feedback means that is used for the hydraulic station of decanter type sludge dewatering screw centrifuge hydraulic differential for sleeping in.
Background technique:
In existing technology, the difference rotating speed is to drive the spiral rotation that hydraulic motor output shaft drives centrifuge by the hydraulic oil in the hydraulic system to produce, and the difference rotating speed provides the solid phase of material and separating of liquid phase, has realized the sludge dewatering to various materials.When the material load changes, the material solid phase moisture content that guarantees the centrifuge separation is stable, and the putty fault does not take place, the poor rotating speed of centrifuge and moment of torsion just must change simultaneously pro rata with the material load, promptly when material load increase, difference rotating speed and moment of torsion just must increase simultaneously pro rata, when the material load reduces, difference rotating speed and moment of torsion just must reduce simultaneously pro rata, and the flow relation in direct ratio of difference rotating speed and hydraulic system, the pressure of moment of torsion and hydraulic system relation in direct ratio, so finally require the pressure of the flow of hydraulic system and hydraulic system to increase pro rata together or reduce, but, the flow of existing hydraulic system immobilizes, can not increase pro rata together with the pressure of hydraulic system or reduce, thus the material solid phase moisture content instability that centrifuge separates, and the putty fault often takes place.
Summary of the invention:
Technical problem to be solved in the utility model is: because the flow of existing hydraulic system immobilizes, can not increase pro rata with the pressure of hydraulic system or reduce, the material solid phase moisture content instability of centrifuge separation as a result, and the putty fault often takes place, in order to solve the problems of the technologies described above a kind of valve group feedback means that is used for hydraulic station that the utility model provides a kind of flow that can make hydraulic system to increase pro rata or reduce with the pressure of hydraulic system.The utility model is to solve the problems of the technologies described above the technological scheme that is adopted to provide a kind of valve group feedback means that is used for hydraulic station, the described valve group feedback means that is used for hydraulic station, by pinboard, one-way valve, oil purifier, liquid---voltage power relay, pressure transducer, relief valve is formed, described one-way valve, oil purifier, liquid---voltage power relay, pressure transducer, relief valve all is fixed on the described pinboard, concrete installation form can pass through engage thread, in pinboard, be provided with passage, the filler opening of one-way valve communicates by the filler opening of passage in the pinboard and relief valve, the oil outlet of one-way valve communicates by the filler opening of passage in the pinboard and oil purifier 10, the oil outlet of oil purifier by the passage in the pinboard respectively with liquid---voltage power relay, pressure transducer is connected, liquid---and the signal output port of voltage power relay and pressure transducer is by being connected the signal input port that lead is connected to the VFC case.Working procedure of the present utility model is: when the material load changes, fluid pressure in the pinboard pipeline will correspondingly change, liquid---voltage power relay carries out pressure change signal to send the signal that changes frequency after internal information is handled through being connected lead input VFC case with pressure transducer, the frequency shift signal is through connecting lead input variable-frequency motor, change the rotating speed of variable-frequency motor, rotating speed is passed to metering pump by the plum blossom elastic coupling flexible coupling, change quantitative pump delivery, output reaches the needed adjusting flow of oil hydraulic motor, thereby the flow of having realized hydraulic system increases pro rata with the pressure of hydraulic system or reduces.When the oil pressure in the pinboard pipeline infinitely raise, relief valve will automatic deloading, plays the safety protection effect.The utility model and prior art contrast, because be provided with the hydraulic valve bank feedback means, so can in time feed back to hydraulic control system to pressure change signal, variation according to pressure, in real time, the flow of regulator solution pressing system pro rata, and simple in structure, easy to use.
Description of drawings:
Fig. 1 is a generalized section of the present utility model.
Fig. 2 is an embodiment's of the utility model a hydraulic schematic diagram.
Embodiment:
As shown in Figure 1, the valve group feedback means in the hydraulic station described in the utility model, by pinboard, one-way valve 9, oil purifier 10, liquid---voltage power relay 11, pressure transducer 12, relief valve 20 are formed.One-way valve 9, oil purifier 10, liquid---voltage power relay 11, pressure transducer 12, relief valve 20 are fixedly mounted on the pinboard by screw thread, the filler opening of one-way valve 9 communicates by the filler opening of passage in the pinboard and relief valve 20, the oil outlet of one-way valve 9 communicates by the filler opening of passage in the pinboard and oil purifier 10, the oil outlet of oil purifier 10 by the passage in the pinboard respectively with liquid---voltage power relay 11, pressure transducer 12 are connected
As shown in Figure 2, the signal output port of VFC case 1 is connected by the signal input port that connects lead 21 and variable-frequency motor 7, the output shaft of variable-frequency motor 7 is connected with metering pump 5 by plum blossom elastic coupling flexible coupling 6, the inlet port of metering pump 5 communicates with fuel tank 18, the oil drain out of metering pump 5 is by connecting flexible pipe 8 and one-way valve 9, the filler opening of relief valve 20 is connected, the direct oil sump tank 18 of the drain tap of relief valve 20, the filler opening of the oil outlet of relief valve 20 and oil purifier 10 communicates, the oil outlet of oil purifier 10 and liquid---voltage power relay 11, pressure transducer 12 communicates, be connected with seal arrangement 14 by high pressure hose 13 simultaneously, hydraulic oil is divided into two-way output after entering oil hydraulic motor 15 through seal arrangement 14, one the tunnel through high pressure hose 19 oil sump tanks 18, another road is through high pressure hose 16, cooler 17 oil sump tanks 18, the signal output port of liquid---voltage power relay 11 and pressure transducer 12 is by being connected the signal input port that lead 21 is connected to the VFC case.
Claims (4)
1, a kind of valve group feedback means that is used for hydraulic station, it is characterized in that: the described valve group feedback means that is used for hydraulic station, by pinboard, one-way valve, oil purifier, liquid---voltage power relay, pressure transducer, relief valve are formed, described one-way valve, oil purifier, liquid---voltage power relay, pressure transducer, relief valve all are fixed on the described pinboard, are provided with passage in pinboard.
2, a kind of valve group feedback means that is used for hydraulic station according to claim 1 is characterized in that: described one-way valve, oil purifier, liquid---voltage power relay, pressure transducer, relief valve are fixed on the described pinboard by engage thread.
3, a kind of valve group feedback means that is used for hydraulic station according to claim 1, it is characterized in that: the filler opening of one-way valve communicates by the filler opening of passage in the pinboard and relief valve, the oil outlet of one-way valve communicates by the filler opening of passage in the pinboard and oil purifier, the oil outlet of oil purifier by the passage in the pinboard respectively with the signal output port of liquid---voltage power relay, pressure transducer are connected liquid---voltage power relay and pressure transducer by being connected the signal input port that lead is connected to the VFC case.
4, a kind of valve group feedback means that is used for hydraulic station according to claim 3, it is characterized in that: the filler opening of relief valve communicates with the filler opening of one-way valve by the passage in the pinboard, the directly logical fuel tank of the drain tap of relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265654 CN2568864Y (en) | 2002-07-22 | 2002-07-22 | Valve group feedback device for hydraulic station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265654 CN2568864Y (en) | 2002-07-22 | 2002-07-22 | Valve group feedback device for hydraulic station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2568864Y true CN2568864Y (en) | 2003-08-27 |
Family
ID=33731640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02265654 Expired - Fee Related CN2568864Y (en) | 2002-07-22 | 2002-07-22 | Valve group feedback device for hydraulic station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2568864Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844682B (en) * | 2005-04-07 | 2010-09-29 | 费斯托股份有限两合公司 | Electrofluidic control device |
| CN102398182A (en) * | 2011-12-06 | 2012-04-04 | 天润曲轴股份有限公司 | Flexible clamp for connecting rod |
| CN101757990B (en) * | 2009-08-25 | 2012-05-02 | 上海市离心机械研究所有限公司 | Method for electrically controlling hydraulic differential of centrifuge |
-
2002
- 2002-07-22 CN CN 02265654 patent/CN2568864Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844682B (en) * | 2005-04-07 | 2010-09-29 | 费斯托股份有限两合公司 | Electrofluidic control device |
| CN101757990B (en) * | 2009-08-25 | 2012-05-02 | 上海市离心机械研究所有限公司 | Method for electrically controlling hydraulic differential of centrifuge |
| CN102398182A (en) * | 2011-12-06 | 2012-04-04 | 天润曲轴股份有限公司 | Flexible clamp for connecting rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |