CN206608403U - A kind of servo oil pump vacuum cavitations oil circuit - Google Patents
A kind of servo oil pump vacuum cavitations oil circuit Download PDFInfo
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- CN206608403U CN206608403U CN201621249307.6U CN201621249307U CN206608403U CN 206608403 U CN206608403 U CN 206608403U CN 201621249307 U CN201621249307 U CN 201621249307U CN 206608403 U CN206608403 U CN 206608403U
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- oil
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- oil pump
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Abstract
The utility model discloses a kind of servo oil pump vacuum cavitations oil circuit, including working connection and negative-pressure oil line, hydraulic oil pump is provided with the working connection, the oil inlet of the working connection is located at fuel tank internal bottom side, it is provided between the working connection side and fuel tank on negative-pressure oil line, the negative-pressure oil line and is provided with hydraulically-controlled one-way valve.The utility model make use of the negative pressure that the hydraulically-controlled one-way valve stated on negative-pressure oil line goes balance to control hydraulic oil pump oil-out, when hydraulic oil pump inverts pressure release or external cause causes hydraulic oil pump oil-out formation negative pressure, the oil sources of fuel tank can by the hydraulically-controlled one-way valve on negative-pressure oil line to hydraulic oil pump oil-out supplement oil sources, so as to prevent hydraulic oil pump oil-out formation negative pressure, eliminate due to negative pressure, cavitation erosion, the hydraulic oil pump that the undesirable elements such as vacuum are caused damages phenomenon, the resistance to pressure of hydraulic oil pump and the stability of oil pressure cntrol can be improved to greatest extent, save the maintaining cost of equipment, and it is simple in construction, it is reasonable in design.
Description
Technical field
The utility model is related to compression molding device technical field, specially a kind of servo oil pump vacuum cavitations oil circuit.
Background technology
At present, the situation for negative pressure do not occur to oil pump mouth in servo oil pump hydraulic press is controlled, and in working connection
When there is the situation of pressure reduction, regulation can not be also realized, causes stability poor, when working connection oil pump capacity is excessive, simple adopts
Take flow control valve to be controlled working connection, cause larger pressure, stability is poor, it is impossible to which realization is entered to the oil in fuel tank
Row filters out impurity, causes the use of impurity effect equipment.
Utility model content
The purpose of this utility model is to provide a kind of servo oil pump vacuum cavitations oil circuit, to solve in above-mentioned background technology
Occur that negative pressure condition is uncontrollable, pressure reduction can not adjust, cause stability to the control mode that oil mass is excessively taken
Difference and the problem of well cuts can not be filtered out.
To achieve the above object, the utility model provides following technical scheme：A kind of servo oil pump vacuum cavitations oil circuit, bag
Include and hydraulic oil pump is provided with working connection and negative-pressure oil line, the working connection, the oil inlet of the working connection is located at fuel tank internal
Bottom side, is provided with negative-pressure oil line, the negative-pressure oil line between the working connection side and fuel tank and is provided with hydraulically-controlled one-way valve.
It is preferred that, it is provided with oil filter on the working connection and negative-pressure oil line oil inlet.
It is preferred that, it is provided between the working connection side and fuel tank on return line, the return line and stream is installed
Measure proportioning valve and the first overflow valve.
It is preferred that, it is provided with voltage stabilizing oil circuit, the voltage stabilizing oil circuit and is provided between the working connection opposite side and fuel tank
Hydraulically-controlled one-way valve, hydraulic accumulator and the second overflow valve.
It is preferred that, the hydraulic oil pump uses the servo oil pump being made up of servomotor and oil pump.
Compared with prior art, the beneficial effects of the utility model are：The equipment passes through working connection and negative-pressure oil line
Oil filter is provided with oil inlet, impurity oily in inlet box can be crossed, it is to avoid the operation of the impurity effect equipment in oil, led to
Cross to be provided between working connection side and fuel tank on return line, return line and flow proportion valve and the first overflow valve be installed,
, by return line, fuel tank, flow-rate ratio can be returned to by the first overflow valve and flow proportion valve when working connection oil mass is excessive
Example valve can adjust the flow flow back into during fuel tank, so as to control the pressure in return line to ensure, in predeterminated position, to enter
And the stability of working connection and return line is ensure that, by being provided with voltage stabilizing oil circuit between working connection opposite side and fuel tank,
Hydraulically-controlled one-way valve, hydraulic accumulator and the second overflow valve are installed on voltage stabilizing oil circuit, can be realized when working connection pressure is reduced
Pressure is provided, so as to improve stability, the servo oil pump being made up of servomotor and oil pump is used by hydraulic oil pump, watched
Take pressure fuel pump steady, low pulse.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1- working connections；The overflow valves of 2- first；3- flow proportion valves；4- return lines；5- negative-pressure oil lines；6- oil strains
Device；7- oil pumps；8- fuel tanks；9- servomotors；The overflow valves of 10- second；11- voltage stabilizing oil circuits；12- hydraulically-controlled one-way valves；13- hydraulic pressure stores
Can device；14- hydraulic oil pumps.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, a kind of embodiment that the utility model is provided：A kind of servo oil pump vacuum cavitations oil circuit, including master
Hydraulic oil pump 14 is provided with oil circuit 1 and negative-pressure oil line 5, working connection 1, the oil inlet of working connection 1 is located at the inside bottom side of fuel tank 8,
It is provided between the side of working connection 1 and fuel tank 8 on negative-pressure oil line 5, negative-pressure oil line 5 and is provided with hydraulically-controlled one-way valve 12, working connection 1
Oil filter 6 is provided with the oil inlet of negative-pressure oil line 5, return line 4, oil return are provided between the side of working connection 1 and fuel tank 8
The overflow valve 2 of flow proportion valve 3 and first is installed on pipeline 4, voltage stabilizing oil circuit is provided between the opposite side of working connection 1 and fuel tank 8
11, hydraulically-controlled one-way valve 12, the overflow valve 10 of hydraulic accumulator 13 and second are installed on voltage stabilizing oil circuit 11, what hydraulic oil pump 14 was used
The servo oil pump being made up of servomotor 9 and oil pump 7.
Operation principle：In use, in the presence of hydraulic oil pump 14, the oil in fuel tank 8 is in the flowing of the direction of working connection 1, master
The pressure of oil circuit 1 be more than voltage stabilizing oil circuit 11 when, working connection 1 oil by voltage stabilizing oil circuit 11 be the fliud flushing of hydraulic accumulator 13, make liquid
Pressure accumulator 13 reaches certain pressure, during more than setting pressure, by the pressure release of the second overflow valve 10, when the oil mass mistake of working connection 1
When many, by return line 4, fuel tank 8 is returned to by the first overflow valve 2 and flow proportion valve 3, flow proportion valve 3 can be adjusted
The flow flow back into during fuel tank 8, so as to control the pressure in return line 4 to ensure in predeterminated position, and then ensure that master
The stability of oil circuit 1 and return line 4, when occurring, hydraulic oil pump 14 inverts pressure release or external cause causes hydraulic oil pump 14 to go out
During hydraulic fluid port formation negative pressure, the oil sources of fuel tank 8 can be mended by the hydraulically-controlled one-way valve 12 on negative-pressure oil line 5 to the oil-out of hydraulic oil pump 14
Oil-filled source, so as to prevent the oil-out of hydraulic oil pump 14 formation negative pressure.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (1)
1. a kind of servo oil pump vacuum cavitations oil circuit, including working connection (1) and negative-pressure oil line (5), it is characterised in that：The main oil
Hydraulic oil pump (14) is provided with road (1), the oil inlet of the working connection (1) is located at the internal bottom side of fuel tank (8), the working connection
(1) it is provided between side and fuel tank (8) on negative-pressure oil line (5), the negative-pressure oil line (5) and is provided with hydraulically-controlled one-way valve (12)；
Oil filter (6) is provided with the working connection (1) and negative-pressure oil line (5) oil inlet；Working connection (1) side and fuel tank
(8) it is provided between on return line (4), the return line (4) and flow proportion valve (3) and the first overflow valve (2) is installed；
It is provided between working connection (1) opposite side and fuel tank (8) on voltage stabilizing oil circuit (11), the voltage stabilizing oil circuit (11) and liquid is installed
Press check valve (12), hydraulic accumulator (13) and the second overflow valve (10)；The hydraulic oil pump (14) is used by servo electricity
The servo oil pump of machine (9) and oil pump (7) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249307.6U CN206608403U (en) | 2016-11-21 | 2016-11-21 | A kind of servo oil pump vacuum cavitations oil circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249307.6U CN206608403U (en) | 2016-11-21 | 2016-11-21 | A kind of servo oil pump vacuum cavitations oil circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206608403U true CN206608403U (en) | 2017-11-03 |
Family
ID=60171347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621249307.6U Active CN206608403U (en) | 2016-11-21 | 2016-11-21 | A kind of servo oil pump vacuum cavitations oil circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206608403U (en) |
-
2016
- 2016-11-21 CN CN201621249307.6U patent/CN206608403U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 528300 Guangdong Daliang District, Foshan, Shunde Daliang Gu Jian village committee Fengxiang road 18, B eight of the first floor of the first floor. Patentee after: Foshan Han and German automation Limited by Share Ltd Address before: 528322 B3A, 11 Xing Lu Middle Road, new village, Leliu Xin'an village, Shunde, Foshan, Guangdong. Patentee before: Foshan Han Industry Automation Co., Ltd. |