CN203835414U - Liquid control two-stage variable pump - Google Patents
Liquid control two-stage variable pump Download PDFInfo
- Publication number
- CN203835414U CN203835414U CN201420137207.9U CN201420137207U CN203835414U CN 203835414 U CN203835414 U CN 203835414U CN 201420137207 U CN201420137207 U CN 201420137207U CN 203835414 U CN203835414 U CN 203835414U
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- valve
- level
- liquid
- pressure regulator
- voltage regulation
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- Expired - Fee Related
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Abstract
The utility model relates to a liquid control two-stage variable pump which comprises a valve body and a plunger movably mounted in the valve body; a primary drain valve and a secondary drain valve are arranged in the valve body on one side of the plunger; a liquid outlet is communicated between the primary drain valve and the secondary drain valve; a primary liquid suction valve and a second liquid suction valve are arranged in the valve body on the other side of the plunger; a primary control valve and a secondary control valve are respectively arranged below the primary liquid suction valve and the second liquid suction valve; a liquid inlet is communicated between the primary liquid suction valve and the second liquid suction valve; a primary pressure regulating valve connected with the primary control valve with the a first liquid outlet and a secondary pressure regulating valve connected with the secondary control valve with a second liquid outlet are arranged on one side of the valve body; a piston is arranged between the primary pressure regulating valve and the secondary pressure regulating valve, so that the purposes of high flow under low pressure and low flow under high pressure are realized.
Description
Technical field
The utility model relates to a kind of pump, is specifically related to a kind of hydraulic control two-stage variable pump.
Background technology
In China's coal-mine safety in production, during mine hydraulic bracket motion, require quick action, just larger pressure is relatively low for the fluid flow of now using, when support action reaches crushable layer top layer, require support slow motion, now require the high specified support force that reaches hydraulic support of the little pressure of fluid flow.The operation of mine hydraulic bracket needs a kind of variable pump that the supply of low pressure and mass flow and the high-pressure low-flow of hydraulic power source is provided.In addition, this change also needs variable pump that the supply of low pressure and mass flow and the high-pressure low-flow of hydraulic power source is provided when high pressure cuts.Traditional pump housing can not complete above-mentioned operation efficiently, causes inefficiency, affects the normal work of workpiece when serious.
Therefore, produce a kind of simple in structurely, easy to operate, operational efficiency is high, and the low pressure and mass flow of hydraulic power source and the hydraulic control two-stage variable pump that high-pressure low-flow is supplied with can be provided, and has market prospects widely.
utility model content:
The technical problems to be solved in the utility model is, provides a kind of simple in structure, easy to operate, and operational efficiency is high, and the low pressure and mass flow of hydraulic power source and the hydraulic control two-stage variable pump that high-pressure low-flow is supplied with can be provided.
Technical solution of the present utility model is: a kind of hydraulic control two-stage variable pump, comprise valve body, be movably arranged on the plunger at valve body middle part, in the valve body of described plunger one side, be provided with one-level tapping valve and secondary tapping valve, between one-level tapping valve and secondary tapping valve, be communicated with liquid outlet P, in the valve body of plunger opposite side, be provided with one-level liquid sucting valve and secondary liquid sucting valve, one-level liquid sucting valve and secondary liquid sucting valve below are respectively arranged with one-level control valve and secondary control valve, between one-level liquid sucting valve and secondary liquid sucting valve, be communicated with liquid inlet O, in a side of valve body, be provided with respectively one-level pressure regulator valve and the second voltage regulation valve being connected with secondary control valve with the second liquid outlet B with one-level control valve with the first liquid outlet A, between one-level pressure regulator valve and second voltage regulation valve, be provided with piston.
One side of described one-level pressure regulator valve is provided with the first high pressure sap cavity A1, one side of described second voltage regulation valve is provided with the second high pressure sap cavity B1, between the one-level pressure regulator valve on piston top and second voltage regulation valve, be provided with pressure regulator valve delivery outlet P1, in piston bottom, be provided with second voltage regulation valve refluxing opening O1.
Described valve body is connected with second voltage regulation valve with one-level pressure regulator valve by junction plate.
Described refluxing opening O1 is connected with liquid inlet O by pipeline, described pressure regulator valve delivery outlet P1 is connected with liquid outlet P by pipeline, the first described high pressure sap cavity A1 is connected with the first liquid outlet A by pipeline, and the second described high pressure sap cavity B1 is connected with the second liquid outlet B by pipeline.
Described plunger is step structure.
The utlity model has following good effect: this product structure is simple, easy to operate, during normal work, plunger is to left movement, the first and second liquid sucting valves are opened, complete imbibition, plunger moves right, the first and second tapping valves are opened, at this moment the first and second liquid sucting valves close, complete discharge opeing, when pressure rising reaches default first class pressure, the control lever that one-level pressure regulator valve is controlled one-level control valve moves upward, the imbibition of one-level liquid sucting valve and the discharge opeing of one-level tapping valve are quit work, and secondary liquid sucting valve and tapping valve are normally worked, now, delivery flow reduces pressure and can continue to raise, when pressure rising reaches second voltage regulation valve preset pressure, the control lever that second voltage regulation valve is controlled secondary control valve moves upward, secondary liquid sucting valve and tapping valve group are quit work, at this moment do not discharge liquid and reached unloading object, this product can be realized the supply of low pressure and mass flow and high-pressure low-flow that hydraulic power source is provided, product work and operational efficiency are high, there is good society and economic benefit.
accompanying drawing explanation:
Fig. 1 is front portion structure schematic diagram of the present utility model.
Fig. 2 is rear portion of the present utility model partial structurtes schematic diagram.
the specific embodiment:
As Fig. 1, shown in 2, a kind of hydraulic control two-stage variable pump, comprise valve body 1, be movably arranged on the plunger 2 at valve body 1 middle part, in the valve body 1 of described plunger 2 one sides, be provided with one-level tapping valve 4-1 and secondary tapping valve 4-2, between one-level tapping valve 4-1 and secondary tapping valve 4-2, be communicated with liquid outlet P, in the valve body 1 of plunger 2 opposite sides, be provided with one-level liquid sucting valve 3-1 and secondary liquid sucting valve 3-2, one-level liquid sucting valve 3-1 and secondary liquid sucting valve 3-2 below are respectively arranged with one-level control valve 5-1 and secondary control valve 5-2, between one-level liquid sucting valve 3-1 and secondary liquid sucting valve 3-2, be communicated with liquid inlet O, in a side of valve body 1, be provided with respectively one-level pressure regulator valve 6-1 and the second voltage regulation valve 6-2 being connected with secondary control valve 5-2 with the second liquid outlet B with one-level control valve 5-1 with the first liquid outlet A, between one-level pressure regulator valve 6-1 and second voltage regulation valve 6-2, be provided with piston 8.
A side of described one-level pressure regulator valve 6-1 is provided with the first high pressure sap cavity A1, a side of described second voltage regulation valve 6-2 is provided with the second high pressure sap cavity B1, between the one-level pressure regulator valve 6-1 on piston 8 tops and second voltage regulation valve 6-2, be provided with pressure regulator valve delivery outlet P1, in piston 8 bottoms, be provided with second voltage regulation valve 6-2 refluxing opening O1.Described valve body 1 is connected with second voltage regulation valve 6-2 with one-level pressure regulator valve 6-1 by junction plate 7.Described refluxing opening O1 is connected with liquid inlet O by pipeline, described pressure regulator valve delivery outlet P1 is connected with liquid outlet P by pipeline, the first described high pressure sap cavity A1 is connected with the first liquid outlet A by pipeline, and the second described high pressure sap cavity B1 is connected with the second liquid outlet B by pipeline.Described plunger 2 is step structure.
Operating principle of the present utility model is: while normally working, two liquid sucting valves and two tapping valves are all at liquid sucking-discharging, when pressure reaches default first class pressure, highly pressurised liquid enters into the first high pressure sap cavity A1 from the first liquid outlet A, one-level pressure regulator valve 6-1 action, the control lever of further controlling one-level control valve 5-1 moves upward, cause one-level liquid sucting valve 3-1 often to open, one-level tapping valve 4-1 quits work and does not carry out discharge opeing, simultaneously, the pressure of one-level pressure regulator valve 6-1 advances piston 8 to the right, by the refluxing opening O1 mouth sealing of second voltage regulation valve 6-2 bottom, when pressure continues to raise, highly pressurised liquid enters into the second high pressure sap cavity B1 from the second liquid outlet B, second voltage regulation valve 6-2 action, the control lever of further controlling secondary control valve 5-2 moves upward, cause secondary liquid sucting valve 3-2 often to open, secondary tapping valve 4-2 quits work and does not carry out discharge opeing.When system pressure drops to one-level recovery pressure, one-level pressure regulator valve 6-1 upper valve core is closed, and bottom spool is opened, and the first high pressure sap cavity A1 earth pressure release is that the control lever of zero one-level control valve 5-1 resets, and the first liquid suction valve is normally worked.Piston 8 is to left movement simultaneously, and refluxing opening O1 opens, the earth pressure release in the second high pressure sap cavity B1, and the control lever of secondary control valve 5-2 resets, and the second liquid suction valve is normally worked, and has realized the object of low pressure and mass flow high-pressure low-flow.
Claims (5)
1. a hydraulic control two-stage variable pump, comprise valve body (1), be movably arranged on the plunger (2) at valve body (1) middle part, it is characterized in that: in the valve body (1) of described plunger (2) one sides, be provided with one-level tapping valve (4-1) and secondary tapping valve (4-2), between one-level tapping valve (4-1) and secondary tapping valve (4-2), be communicated with liquid outlet (P), in the valve body (1) of plunger (2) opposite side, be provided with one-level liquid sucting valve (3-1) and secondary liquid sucting valve (3-2), one-level liquid sucting valve (3-1) and secondary liquid sucting valve (3-2) below are respectively arranged with one-level control valve (5-1) and secondary control valve (5-2), between one-level liquid sucting valve (3-1) and secondary liquid sucting valve (3-2), be communicated with liquid inlet (O), in a side of valve body (1), be provided with respectively one-level pressure regulator valve (6-1) and the second voltage regulation valve (6-2) being connected with secondary control valve (5-2) with the second liquid outlet (B) with one-level control valve (5-1) with the first liquid outlet (A), between one-level pressure regulator valve (6-1) and second voltage regulation valve (6-2), be provided with piston (8).
2. hydraulic control two-stage variable pump according to claim 1, it is characterized in that: a side of described one-level pressure regulator valve (6-1) is provided with the first high pressure sap cavity (A1), one side of described second voltage regulation valve (6-2) is provided with the second high pressure sap cavity (B1), between the one-level pressure regulator valve (6-1) on piston (8) top and second voltage regulation valve (6-2), be provided with pressure regulator valve delivery outlet (P1), in piston (8) bottom, be provided with second voltage regulation valve (6-2) refluxing opening (O1).
3. hydraulic control two-stage variable pump according to claim 1, is characterized in that: described valve body (1) is connected with second voltage regulation valve (6-2) with one-level pressure regulator valve (6-1) by junction plate (7).
4. hydraulic control two-stage variable pump according to claim 2, it is characterized in that: described refluxing opening (O1) is connected with liquid inlet (O) by pipeline, described pressure regulator valve delivery outlet (P1) is connected with liquid outlet (P) by pipeline, the first described high pressure sap cavity (A1) is connected with the first liquid outlet (A) by pipeline, and the second described high pressure sap cavity (B1) is connected with the second liquid outlet (B) by pipeline.
5. hydraulic control two-stage variable pump according to claim 1, is characterized in that: described plunger (2) is step structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137207.9U CN203835414U (en) | 2014-03-26 | 2014-03-26 | Liquid control two-stage variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137207.9U CN203835414U (en) | 2014-03-26 | 2014-03-26 | Liquid control two-stage variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835414U true CN203835414U (en) | 2014-09-17 |
Family
ID=51513270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420137207.9U Expired - Fee Related CN203835414U (en) | 2014-03-26 | 2014-03-26 | Liquid control two-stage variable pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835414U (en) |
-
2014
- 2014-03-26 CN CN201420137207.9U patent/CN203835414U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20180326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |