CN207795707U - A kind of adjustable speed double pump power unit - Google Patents
A kind of adjustable speed double pump power unit Download PDFInfo
- Publication number
- CN207795707U CN207795707U CN201721825448.2U CN201721825448U CN207795707U CN 207795707 U CN207795707 U CN 207795707U CN 201721825448 U CN201721825448 U CN 201721825448U CN 207795707 U CN207795707 U CN 207795707U
- Authority
- CN
- China
- Prior art keywords
- gear pump
- valve block
- valve
- centre
- line
- 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 - Fee Related
Links
Landscapes
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model is related to a kind of adjustable speed double pump power units, including centre valve block, it is fixed on the fuel tank and motor at centre valve block both ends, the duplex gear pump for being connected with fuel sucking pipe is equipped on the lower face of centre valve block in the fuel tank, the centre valve block side wall installation overflow valve is connected to vent line, oil circuit is opened up in the centre valve block, in-line is connected to after installing the first check valve with A mouthfuls, oil return line is connected to fuel tank through 2/2-way proportion magnetic valve, the front gear of the duplex gear pump pumps out hydraulic fluid port and rear gear pump oil outlet and is connected to respectively with the first check valve front end in-line, the rear gear pump oil outlet taps off-load oil duct, the off-load oil duct is equipped with hydraulic control unloader valve；This practicality can carry out pressure release oil return speed governing, easy to operate, stability higher and energy loss is smaller when duplex gear pump works at the same time or nipper wheel pump works independently by 2/2-way proportion magnetic valve.
Description
Technical field
The utility model is related to hydraulic system power unit field, in particular to a kind of adjustable speed double pump power list
Member.
Background technology
Lifting machine, forklift lifting arm operation in, require the rate of climb very fast when unloaded, require pressure-bearing big when load,
Therefore provide power power unit use duplex pump work, conventional design, when load be less than system unloaded pressure value when, double pump
Front and back pump works at the same time, and the big rate of climb of flow is very fast, when load is more than system unloaded pressure value, the rear pump overflow valve of double pump
Off-load is opened, pressure unloading is operating pressure, and energy loss is big.
Utility model content
Purpose of the utility model is to solve above-mentioned existing defect, raising speed in a kind of adjustable platform is provided
Degree and the smaller adjustable speed double pump power unit of energy loss.
To achieve the above object, the technical solution of the utility model is as follows：
A kind of adjustable speed double pump power unit, including centre valve block, the fuel tank and motor that are fixed on centre valve block both ends,
The lower face of centre valve block is equipped with the duplex gear pump for being connected with fuel sucking pipe, the centre valve block side wall installation in the fuel tank
Overflow valve is connected to vent line, and oil circuit is opened up in the centre valve block, it is characterised in that：In-line install the first check valve after with A
Mouthful connection, oil return line are connected to fuel tank through 2/2-way proportion magnetic valve, the front gear of the duplex gear pump pump out hydraulic fluid port and
Rear gear pump oil outlet is connected to the first check valve front end in-line respectively, and the rear gear pump oil outlet taps off-load oil duct,
The off-load oil duct is equipped with hydraulic control unloader valve.
The rear gear pump oil outlet is connect fuel-displaced with the first check valve front end in-line as a preferred technical solution,
Road is equipped with the second check valve.
The centre valve block is made of aluminium alloy extrusions as a preferred technical solution,.
The beneficial effects of the utility model are：The front and back gear pump of duplex gear pump is two pressure values, when load is less than
When rear gear pump pressure unloading value, it is very fast that duplex gear pump works at the same time the rate of climb；When load is more than rear gear pump off-load pressure
When force value, the hydraulic control unloader valve on rear gear pump opens off-load, and nipper wheel pump is worked independently, risen with slower speed, meanwhile,
When duplex gear pump works at the same time or nipper wheel pump works independently, pressure release oil return can be carried out by 2/2-way proportion magnetic valve
Speed governing, easy to operate, stability higher and energy loss is smaller.
Description of the drawings
Fig. 1 is a kind of hydraulic schematic diagram of adjustable speed double pump power unit of the utility model；
Fig. 2 is a kind of front view of adjustable speed double pump power unit of the utility model.
In figure：1- motors, 2- nippers wheel pump, 3- rear gear pumps, 4- centre valve blocks, the second check valves of 5-, 6- overflow valves, 7-
First check valve, 8- 2/2-ways proportion magnetic valve, 9- hydraulic control unloader valves, 10- fuel tanks.
Specific implementation mode
To make the structure feature to the utility model and the effect of being reached has a better understanding and awareness, to compared with
Good embodiment and attached drawing cooperation detailed description, are described as follows：
As shown in Figure 1 and 2, a kind of adjustable speed double pump power unit, including centre valve block 4, it is fixed on 4 both ends of centre valve block
Fuel tank 10 and motor 1, be equipped on the lower face of centre valve block 4 in fuel tank 10 and be connected with the duplex gear pump of fuel sucking pipe, in
4 side wall of heart valve block installs overflow valve 6 and is connected to vent line, oil circuit is opened up in centre valve block 4, after in-line installs the first check valve 7
It is connected to A mouthfuls, oil return line is connected to fuel tank 10,2 oil outlet of nipper wheel pump of duplex gear pump through 2/2-way proportion magnetic valve 8
It being connected to respectively with 7 front end in-line of the first check valve with 3 oil outlet of rear gear pump, 3 oil outlet of rear gear pump taps off-load oil duct,
Off-load oil duct is equipped with hydraulic control unloader valve 9.
In the present embodiment, the oil road that 3 oil outlet of rear gear pump is connect with 7 front end in-line of the first check valve is equipped with
Second check valve 5.
In the present embodiment, centre valve block 4 is made of aluminium alloy extrusions.
In the present embodiment, the front and back gear pump of duplex gear pump is two pressure values, when load is unloaded less than rear gear pump 3
When lotus pressure value, it is very fast that duplex gear pump works at the same time the rate of climb；When load is more than 3 pressure unloading value of rear gear pump, after
Hydraulic control unloader valve 9 on gear pump 3 opens off-load, and nipper wheel pump 2 is worked independently, risen with slower speed, meanwhile, in duplex-gear
When wheel pump works at the same time or nipper wheel pump 2 works independently, pressure release oil return speed governing can be carried out by 2/2-way proportion magnetic valve,
Easy to operate, stability higher and energy loss is smaller.
In conclusion the only preferred embodiment of the utility model, is not used for limiting the utility model implementation
Range, equivalent change carried out by all shape, construction, feature and spirit according to described in the utility model claims range with repair
Decorations, should all be included in the right of the utility model.
Claims (3)
1. a kind of adjustable speed double pump power unit, including centre valve block, the fuel tank and motor that are fixed on centre valve block both ends, in institute
The lower face for stating centre valve block in fuel tank is equipped with the duplex gear pump for being connected with fuel sucking pipe, and the centre valve block side wall installation is overflow
It flows valve and is connected to vent line, oil circuit is opened up in the centre valve block, it is characterised in that：In-line install the first check valve after with A mouthfuls
Connection, oil return line are connected to fuel tank through 2/2-way proportion magnetic valve, and the front gear of the duplex gear pump pumps out hydraulic fluid port with after
Gear pump oil outlet is connected to the first check valve front end in-line respectively, and the rear gear pump oil outlet taps off-load oil duct, institute
It states off-load oil duct and is equipped with hydraulic control unloader valve.
2. a kind of adjustable speed double pump power unit according to claim 1, it is characterised in that：The rear gear pump oil outlet
The oil road being connect with the first check valve front end in-line is equipped with the second check valve.
3. a kind of adjustable speed double pump power unit according to claim 1, it is characterised in that：The centre valve block uses aluminium
Alloy profile is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721825448.2U CN207795707U (en) | 2017-12-22 | 2017-12-22 | A kind of adjustable speed double pump power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721825448.2U CN207795707U (en) | 2017-12-22 | 2017-12-22 | A kind of adjustable speed double pump power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795707U true CN207795707U (en) | 2018-08-31 |
Family
ID=63282244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721825448.2U Expired - Fee Related CN207795707U (en) | 2017-12-22 | 2017-12-22 | A kind of adjustable speed double pump power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825571A (en) * | 2018-09-04 | 2018-11-16 | 阜新北鑫星液压有限公司 | A kind of load-sensitive gear pump with variable capacity system |
-
2017
- 2017-12-22 CN CN201721825448.2U patent/CN207795707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825571A (en) * | 2018-09-04 | 2018-11-16 | 阜新北鑫星液压有限公司 | A kind of load-sensitive gear pump with variable capacity system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206874583U (en) | A kind of aerial work platform hydraulic energy-saving system | |
| CN201218219Y (en) | Sleeve type multi-functional water power control valve | |
| CN206872378U (en) | A kind of aerial work platform hydraulic energy-saving system with no-load protection | |
| CN207795707U (en) | A kind of adjustable speed double pump power unit | |
| CN202520705U (en) | Heading machine hydraulic system with cooling and oil supplement functions | |
| CN203717551U (en) | Power unit of pallet truck | |
| CN207795747U (en) | A kind of self-discharging trailer double acting power unit | |
| CN202756700U (en) | Anti-blocking check valve | |
| CN207795744U (en) | A kind of duplex pump type power unit | |
| CN207795706U (en) | A kind of scissor platform double acting power unit | |
| CN204489012U (en) | A kind of system realizing electric motor car with two wheels alighting gear automatic lifting | |
| CN204386982U (en) | A kind of lifting machine double pump hydraulic unloading power unit | |
| CN205268419U (en) | Disabled vehicle power unit | |
| CN211110814U (en) | Novel aircraft jacking hydraulic system | |
| CN207701491U (en) | Double speed down type hydraulic power unit | |
| CN110510540B (en) | Aircraft jacking hydraulic system | |
| CN207986586U (en) | A kind of scissor-type lifting platform power unit | |
| CN207795720U (en) | A kind of self-discharging trailer power unit | |
| CN202577102U (en) | Hydraulic control device of asphalt distribution truck | |
| CN111997944A (en) | Hydraulic system for automobile lifter | |
| CN205187744U (en) | Hydro -cylinder hydraulic drive system with prevent inhaling sky function | |
| CN201786819U (en) | Hydraulic hybrid power oil temperature control device | |
| CN111997945A (en) | Hydraulic system for automobile lifter | |
| CN205956100U (en) | Vehicular road surface operation equipment lift cylinder control device | |
| CN205533565U (en) | Hydraulic pressure station of lift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20211222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |