CN209115447U - A kind of low pressure huge discharge variable pump - Google Patents
A kind of low pressure huge discharge variable pump Download PDFInfo
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- CN209115447U CN209115447U CN201821486999.5U CN201821486999U CN209115447U CN 209115447 U CN209115447 U CN 209115447U CN 201821486999 U CN201821486999 U CN 201821486999U CN 209115447 U CN209115447 U CN 209115447U
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- gear pump
- quantitative gear
- huge discharge
- low pressure
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Abstract
The utility model discloses a kind of low pressure huge discharge variable pumps, are made of motor, volume speed-modulating loop, quantitative gear pump and adjusting damping；Quantitative gear pump, adjusting damping and the system working connection connecting with quantitative gear pump constitutes load system, adjusts damping and connect with system working connection, adjustment working connection uninterrupted；The volume speed-modulating loop is connect with quantitative gear pump；Revolving speed is provided for quantitative gear pump；The volume speed-modulating loop provides power by motor.The utility model passes through the utility model, by common, simple, the at low cost hydraulic part in several markets, constitute one be of little use in the market, the hydraulic part that cost is very high, not only it had solved the problems, such as that huge discharge plunger pump is at high cost but also to solve huge discharge quantitative gear pump power loss big, and complied fully with customer requirement.
Description
Technical field
The present invention relates to a kind of variable pumps, and in particular to a kind of low pressure huge discharge variable pump.
Background technique
Hydraulic pump is hydraulic system energy reforming unit, is responsible for converting the mechanical energy of power source to the pressure of hydraulic system
Power energy, the i.e. liquid to hydraulic system output certain pressure and flow.
Hydraulic pump is broadly divided into according to structure type: several big types such as vane pump, gear pump, plunger pump, if according to
Pressure rating point, can also be roughly divided into low-lift pump, medium lift pump, high-pressure pump several types.Wherein, several structure types is hydraulic
It is as follows to pump reapective features:
Vane pump: compact-sized, outer dimension is small, noise is small, but antifouling property is poor, and pressure rating is lower, and low speed
Performance is bad.
Gear pump: structure is simple, small in size, light-weight, is suitable for medium voltage network, under high-pressure situations volumetric efficiency decline compared with
It is serious.
Plunger pump: precision height, good seal performance, operating pressure is high, but structure is complicated, and cost is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of low pressure huge discharge variable pumps, and at low cost, low energy consumption.
In order to solve the above technical problems, the present invention adopts the following technical scheme that: a kind of low pressure huge discharge variable pump, by electricity
Machine, volume speed-modulating loop, quantitative gear pump and adjusting damping are constituted；The quantitative gear pump, adjust damping and with quantitative tooth
The system working connection of wheel pump connection constitutes load system, adjusts damping and connect with system working connection, adjusts working connection uninterrupted；
The volume speed-modulating loop is connect with quantitative gear pump；Revolving speed is provided for quantitative gear pump；The volume speed-modulating loop by
Motor provides power.
Further, the volume speed-modulating loop is made of small-displacement plunger and small displacement hydraulic motor；The electricity
The output end of machine is connect with small-displacement plunger, and small-displacement plunger is connect by oil circuit with small displacement hydraulic motor, is float
It measures hydraulic motor and hydraulic oil is provided.
Further, the small-displacement plunger discharge capacity is adjustable.
Further, it is provided on the oil circuit between small-displacement plunger and small displacement hydraulic motor and is returned for volumetric speed control
The high-pressure overflow valve of the system pressure on road.
Further, the system overflow valve for limiting load system maximum pressure is additionally provided on the working connection of load system.
Further, adjusting damping adjusts damping for bypass, by adjusting damping hole latus rectum, adjusts load system
Working connection uninterrupted.
Further, quantitative gear pump load system provides power oil, and discharge capacity is fixed, and flow is by the hydraulic horse of small displacement
It is determined up to output revolving speed.
Beneficial effects of the present invention:
1) at low cost: through the invention, by common, simple, the at low cost hydraulic part in several markets, to constitute a market
On be of little use, the hydraulic part that cost is very high.It is all very big cost savings no matter to manufacturer or client.
2) low energy consumption.In the market, the variable plunger pump system of huge discharge can accomplish that low energy consumption when exporting non-loaded,
But cost is too high.And the constant displacement pump cost of huge discharge is although low, but due to output be constant discharge, therefore its export it is non-loaded when
Power loss sheerly waste.For client, subsequent use cost is equivalent to unlimited raising for this.Through the invention, it both solves
Huge discharge plunger pump of having determined is at high cost, solves the problems, such as that huge discharge quantitative gear pump power loss is big again.Comply fully with client
It is required that.
Detailed description of the invention
It, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments recorded in the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Technical solution of the present invention will be clearly and completely described by specific embodiment below.
As shown in Figure 1, being a kind of low pressure huge discharge variable pump of the invention, by motor 1, small-displacement plunger 2, high pressure
Overflow valve 3, huge discharge quantitative gear pump 5, system overflow valve 6, adjusts 7 composition of damping at small displacement hydraulic motor 4；
Motor 1 provides power to entire hydraulic system, limits system peak power demand.
Small-displacement plunger 2 is responsible for providing hydraulic oil to small displacement hydraulic motor 4, and 2 discharge capacity of small-displacement plunger is adjustable, with
Small displacement hydraulic motor 4 constitutes volume speed-modulating loop (range in lower dotted line frame in Fig. 1), and setting high pressure is overflow on volume speed-modulating loop
Valve 3 is flowed, the system pressure of small-displacement plunger 2, the composition volume speed-modulating loop of small displacement hydraulic motor 4 is limited, while ensureing and being
System safety.
Volume speed-modulating loop gives huge discharge quantitative gear pump 5 to provide revolving speed, that is to say, that when small-displacement plunger 2 or small
When 4 discharge capacity of displacement hydraulic motor changes.Volume speed-modulating loop output revolving speed can change.By hydraulic pump flow formula: Q
=q*n (Q: flow system flow；Q: pumpage；N: input speed), since huge discharge quantitative gear pump 5 is constant displacement pump, therefore system is defeated
Outflow Q only with revolving speed direct proportionality.
Quantitative gear pump is that load system (range in upper dotted line frame) provides power oil, and discharge capacity is fixed, and flow is by small
Displacement hydraulic motor 4 exports revolving speed and determines.It is equivalent to a change displacement plunger pump.
It is additionally provided with system overflow valve 6 on the working connection of load system of the invention, limits load system maximum pressure, mention
For safeguard protection.
Adjusting damping 7 of the invention adjusts damping for bypass, by adjusting damping hole latus rectum, adjusts load system working connection
Uninterrupted.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to design of the invention
It is defined with range, without departing from the design concept of the invention, ordinary engineering and technical personnel is to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content is all documented in technical requirements book.
Claims (7)
1. a kind of low pressure huge discharge variable pump, it is characterised in that: by motor (1), volume speed-modulating loop, quantitative gear pump (5) and
Damping (7) is adjusted to constitute；Quantitative gear pump (5), adjusting damping (7) and the system master being connect with quantitative gear pump (5)
Oil circuit constitutes load system, adjusts damping (7) and connect with system working connection, adjusts working connection uninterrupted；The adjustment with volume
Fast circuit is connect with quantitative gear pump (5)；Revolving speed is provided for quantitative gear pump (5)；The volume speed-modulating loop is by motor (1)
Power is provided.
2. a kind of low pressure huge discharge variable pump according to claim 1, it is characterised in that: the volume speed-modulating loop by
Small-displacement plunger (2) and small displacement hydraulic motor (4) are constituted；The output end of the motor (1) and small-displacement plunger (2) are even
It connects, small-displacement plunger (2) is connect by oil circuit with small displacement hydraulic motor (4), is provided for small displacement hydraulic motor (4) hydraulic
Oil.
3. a kind of low pressure huge discharge variable pump according to claim 2, it is characterised in that: the small-displacement plunger
(2) discharge capacity is adjustable.
4. a kind of low pressure huge discharge variable pump according to claim 2, it is characterised in that: small-displacement plunger (2) with it is small
The high-pressure overflow valve (3) of the system pressure for volume speed-modulating loop is provided on oil circuit between displacement hydraulic motor (4).
5. a kind of low pressure huge discharge variable pump according to claim 1, it is characterised in that: on the working connection of load system also
It is provided with the system overflow valve (6) for limiting load system maximum pressure.
6. a kind of low pressure huge discharge variable pump according to claim 1, it is characterised in that: the adjusting damps (7) and is
Bypass adjusts damping, by adjusting damping hole latus rectum, adjusts load system working connection uninterrupted.
7. a kind of low pressure huge discharge variable pump according to claim 1, it is characterised in that: quantitative gear pump (5) load system
System provides power oil, and discharge capacity is fixed, and flow is determined by small displacement hydraulic motor (4) output revolving speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821486999.5U CN209115447U (en) | 2018-09-12 | 2018-09-12 | A kind of low pressure huge discharge variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821486999.5U CN209115447U (en) | 2018-09-12 | 2018-09-12 | A kind of low pressure huge discharge variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115447U true CN209115447U (en) | 2019-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821486999.5U Active CN209115447U (en) | 2018-09-12 | 2018-09-12 | A kind of low pressure huge discharge variable pump |
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| CN (1) | CN209115447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869450A (en) * | 2018-09-12 | 2018-11-23 | 南通润邦重机有限公司 | A kind of low pressure huge discharge variable pump |
-
2018
- 2018-09-12 CN CN201821486999.5U patent/CN209115447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869450A (en) * | 2018-09-12 | 2018-11-23 | 南通润邦重机有限公司 | A kind of low pressure huge discharge variable pump |
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