CN201187613Y - Mechanical proportional balance valve for oil tank liquid level automatic control - Google Patents
Mechanical proportional balance valve for oil tank liquid level automatic control Download PDFInfo
- Publication number
- CN201187613Y CN201187613Y CNU2008200842989U CN200820084298U CN201187613Y CN 201187613 Y CN201187613 Y CN 201187613Y CN U2008200842989 U CNU2008200842989 U CN U2008200842989U CN 200820084298 U CN200820084298 U CN 200820084298U CN 201187613 Y CN201187613 Y CN 201187613Y
- Authority
- CN
- China
- Prior art keywords
- valve
- liquid level
- valve pocket
- spool
- oil tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a mechanical proportion balancing valve used for the automatic control of the liquid level of an oil tank. A step-shaped valve core is sleeved in a hole of a valve cover, the large end of the valve core is glidingly matched with a valve cover hole, a limiting baffle is installed at one end of the valve cover, the small end of the valve core extends outside the valve cover from a limiting baffle hole, the small end of the valve core and the limiting baffle hole form a flow channel, and equant valve ports are arranged in the middle of the valve cover. The mechanical proportion balancing valve is installed on the oil tank, the position of a counter weight piston in the oil tank corresponds to the actual liquid level, when the actual liquid level is compared with the given liquid level, the deviation exists, the counter weight piston can be directly acted on the valve core of the mechanical proportion balancing valve, according to a deviation signal, the opening degree of the valve port of the mechanical proportion balancing valve is controlled in real time, and the required partial flow quantity for supplementing oil is led into the oil tank through the mechanical proportion balancing valve till the liquid level is stabilized. Through the change of the liquid level, the mechanical proportion balancing valve directly controls the flow quantity for supplementing oil, thereby the quick system response is achieved, and the automatic control of the liquid level is realized. By adopting a mechanical feedback controlling mode, the structure is simple, the cost is low, and the system reliability is higher.
Description
Technical field
The utility model relates to hydraulic flow control valve, especially relates to a kind of oil tank liquid level mechanical proportional balancing valve of control automatically that is used for.
Background technique
In the hydraulic system, fuel tank is an auxiliary the most commonly used, has storage medium, distribute heat, a series of functions such as precipitated impurities, oil mass monitoring.The normal mode that adopts limit switch of the liquid level of fuel tank control at present when liquid level surpasses or is lower than the position that sets, is closed or is opened feed circuit by the limit switch trigger signal and realize.But in the demanding closed system of some fuel-flow control, this mode needs frequent starting or stops slippage pump, influences working life; Limit switch signal is controlled indirectly, can not realize continuous control, and response is slower.
Summary of the invention
The purpose of this utility model is to provide a kind of oil tank liquid level mechanical proportional balancing valve of control automatically that is used for, and adopts machine feedback, on slippage pump total discharge basis of constant, realizes the continuous control of oil tank liquid level, does not need frequent start-stop.
The technological scheme that its technical problem that solves the utility model adopts comprises:
Comprise spool, Regulation spring, O RunddichtringO, can regulate blind nut, valve pocket, postive stop baffle.Be with step-like spool in the hole of valve pocket, the big end of spool is connected with the can regulate blind nut that is contained in valve pocket one end through Regulation spring, the big end of spool and valve pocket hole are for being slidingly matched, the O RunddichtringO is set between can regulate blind nut and valve pocket, the valve pocket the other end is equipped with postive stop baffle, the small end of spool stretches out outside the valve pocket from the limiting block plate hole, spool small end and postive stop baffle hole form runner, the valve pocket middle part has the valve port of five equilibrium, have center flow channels in the spool, the center flow channels of spool small end has radial hole, and radial hole is communicated with valve pocket cavity volume and Regulation spring chamber respectively.
The utility model is compared with background technique, and the useful effect that has is:
1) the utility model is installed in and realizes liquid level control on the fuel tank, directly controls the repairing flow by the variation of liquid level, reaches faster system response, and realizes control automatically.
2) adopt the machine feedback control mode, simple in structure, cost is low, and the electronic type system reliability is higher relatively.
Description of drawings
Fig. 1 adopts mechanical proportional balancing valve to realize the structural drawing of automatic control of liquid.
Fig. 2 adopts mechanical proportional balancing valve to realize the hydraulic schematic diagram of automatic control of liquid.
Fig. 3 is used for the oil tank liquid level plan view of the mechanical proportional balancing valve of control automatically.
Fig. 4 is used for the oil tank liquid level A-A sectional drawing of the mechanical proportional balancing valve of control automatically.
Among the figure: 1. spool, 2. pipe joint, 3. Regulation spring, 4.O RunddichtringO, 5. can regulate blind nut, 6. valve pocket, 7. combination seal pad, 8. postive stop baffle, 9. fuel tank, 10. counterweight piston, 11. slippage pumps
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 3, Figure 4, the utility model comprises spool 1, Regulation spring 3, O RunddichtringO 4, can regulate blind nut 5, valve pocket 6, postive stop baffle 8.Be with step-like spool 1 in the hole of valve pocket 6, the big end of spool 1 is connected with the can regulate blind nut 5 that is contained in valve pocket 6 one ends through Regulation spring 3, the big end of spool 1 and valve pocket 6 holes are for being slidingly matched, 6 of can regulate blind nut 5 and valve pockets are provided with O RunddichtringO 4, valve pocket 6 the other ends are equipped with postive stop baffle 8, the small end of spool 1 stretches out outside the valve pocket 6 from postive stop baffle 8 holes, spool 1 small end and postive stop baffle 8 holes form runner, valve pocket 6 middle parts have the valve port of five equilibrium, have center flow channels in the spool 1, the center flow channels of spool 1 small end has radial hole, and radial hole is communicated with valve pocket 6 cavity volumes and Regulation spring 3 chambeies respectively.
The valve port that described valve pocket 6 middle parts have five equilibrium is 4～8.
Described valve pocket 6 is provided with the screw thread that is connected with fuel tank near an end external cylindrical surface of postive stop baffle 8.
Working principle of the present utility model is as follows:
As shown in Figure 1 and Figure 2, the valve pocket 6 of mechanical proportional balancing valve is embedded in the pipe joint 2, and by being threaded into the bottom of fuel tank 9,2 of fuel tank 9 and pipe joints are provided with combination seal pad 7.The filler opening of mechanical proportional balancing valve is communicated with the cavity volume of pipe joint 2, and the oil outlet of mechanical proportional balancing valve is communicated with fuel tank 9.Pipe joint 2 has repairing mouth A and return opening B.Repairing mouth A and return opening B are connected on feed circuit, and repairing mouth A connects the repairing pipeline, and return opening B connects return line.Slippage pump 11 moves with constant flow rate output always, and the repairing flow is divided into two-part after entering the repairing mouth A of pipe joint 2, and a part flows into the mechanical proportional balancing valve import, and another part is directly by return opening B oil return.
When spool 1 does not contact with counterweight piston 10, spool 1 is still in the upper end under the restoring force effect of Regulation spring 3, spacing by postive stop baffle 8, and this moment, the valve port of valve pocket 6 was closed, and was ended by the path that mechanical proportional balancing valve enters fuel tank 9 by pipe joint 2 cavity volumes.The repairing flow is all through the direct oil return of the return opening B of pipe joint 2.
When liquid level decline, spool 1 contacts with counterweight piston 10.The displacement of counterweight piston 10 is corresponding one by one with the liquid level of fuel tank 9, and counterweight piston 10 drive spools 1 move up and down simultaneously, and the displacement of spool 1 remains consistent with the displacement of counterweight piston 10.The displacement control valve of spool 1 overlaps the aperture of 6 valve ports, so the liquid level of fuel tank 9 changes continuously and represented the aperture of valve pocket 6 valve ports to change continuously.A repairing flow part enters in the mechanical proportional balancing valve by the valve port of valve pocket 6, and enters in the fuel tank 9 by the runner of postive stop baffle 8.Another part is through the direct oil return of the return opening B of pipe joint 2.Flow by mechanical proportional balancing valve becomes certain corresponding relation with the aperture of valve pocket 6 valve ports, therefore also becomes corresponding relation with the liquid level of fuel tank 9.
When the flow that enters fuel tank 9 by mechanical proportional balancing valve equated with the loss flow that causes liquid level to descend, counterweight piston 10 was still in this position, and it is constant that liquid level keeps, and this moment, the aperture of valve pocket 6 valve ports reached the equilibrium position.So far, one time automatic control of liquid is finished, and whole process slippage pump 11 can be exported with constant flow rate always.
Need repeatedly adjust liquid level, repeat above-mentioned steps.
Claims (3)
1, a kind of oil tank liquid level mechanical proportional balancing valve of control automatically that is used for is characterized in that: comprise spool (1), Regulation spring (3), O RunddichtringO (4), can regulate blind nut (5), valve pocket (6), postive stop baffle (8); Be with step-like spool (1) in the hole of valve pocket (6), the big end of spool (1) is connected with the can regulate blind nut (5) that is contained in valve pocket (6) one ends through Regulation spring (3), the big end of spool (1) and valve pocket (6) hole are for being slidingly matched, between can regulate blind nut (5) and valve pocket (6) O RunddichtringO (4) is set, valve pocket (6) the other end is equipped with postive stop baffle (8), the small end of spool (1) stretches out outside the valve pocket (6) from postive stop baffle (8) hole, spool (1) small end and postive stop baffle (8) hole form runner, valve pocket (6) middle part has the valve port of five equilibrium, spool has center flow channels in (1), the center flow channels of spool (1) small end has radial hole, and radial hole is communicated with valve pocket (6) cavity volume and Regulation spring (3) chamber respectively.
2, a kind of oil tank liquid level mechanical proportional balancing valve of control automatically that is used for according to claim 1, it is characterized in that: the valve port that described valve pocket (6) middle part has five equilibrium is 4～8.
3, a kind of oil tank liquid level mechanical proportional balancing valve of control automatically that is used for according to claim 1, it is characterized in that: described valve pocket (6) is provided with the screw thread that is connected with fuel tank near an end external cylindrical surface of postive stop baffle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200842989U CN201187613Y (en) | 2008-03-11 | 2008-03-11 | Mechanical proportional balance valve for oil tank liquid level automatic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200842989U CN201187613Y (en) | 2008-03-11 | 2008-03-11 | Mechanical proportional balance valve for oil tank liquid level automatic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187613Y true CN201187613Y (en) | 2009-01-28 |
Family
ID=40310635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200842989U Expired - Lifetime CN201187613Y (en) | 2008-03-11 | 2008-03-11 | Mechanical proportional balance valve for oil tank liquid level automatic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187613Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577691A (en) * | 2020-04-20 | 2020-08-25 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
-
2008
- 2008-03-11 CN CNU2008200842989U patent/CN201187613Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577691A (en) * | 2020-04-20 | 2020-08-25 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
| CN111577691B (en) * | 2020-04-20 | 2022-04-05 | 同济大学 | Low-pulsation flow control valve based on post-valve energy storage compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080311 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |