CN105822536B - A kind of Self-controlling secondary Variable Control structure of plunger pump - Google Patents
A kind of Self-controlling secondary Variable Control structure of plunger pump Download PDFInfo
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- CN105822536B CN105822536B CN201610247238.3A CN201610247238A CN105822536B CN 105822536 B CN105822536 B CN 105822536B CN 201610247238 A CN201610247238 A CN 201610247238A CN 105822536 B CN105822536 B CN 105822536B
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- variable
- flange
- adjusting screw
- adjusting bolt
- variable flange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of Self-controlling secondary Variable Control structures of plunger pump, including the pump housing and variable piston, the pump body is hollow and slides laterally and is disposed with variable piston, the both ends of the pump housing pass through variable flange A and variable flange B sealings, the outboard end of the variable flange A and variable flange B is threaded with Adjusting bolt Adjusting screw A and Adjusting bolt Adjusting screw B respectively between two parties, one end of the variable piston is bigger diameter end, the other end is miner diameter end, its bigger diameter end is extend into variable flange A, its miner diameter end extend into variable flange B and is connected with Adjusting bolt Adjusting screw B by preloading spring, the inner cavity of variable flange A and variable flange B is connected with the oil inlet runner in the pump housing.The configuration of the present invention is simple is reliable, can meet hydraulic press it is fast under, it is slow under, pressurize, slow upper, these upper Functional Requirements soon, and adjust function switch point by replacing vital part, improve the independence of client.
Description
Technical field
The present invention relates to Variable plunger pump fields, more particularly to a kind of Self-controlling secondary Variable Control knot of plunger pump
Structure.
Background technology
Currently, in Hydraulic Industry, the complete job flow of many press is：Under fast-it is slow under-pressurize-is upper slowly-fast
On.Main pump is essentially axial plunger pump in the hydraulic system scheme of these press, and variable format is broadly divided into 2 major class：When
Constant pressure pump is selected, second is that selection constant output pump.Under both pumps are functionally all only fast, pressurize, it is fast on.Realize it is slow lower or
Slowly upper function, can only by overflow valve will unwanted oil by overflow oil return box, so the extra oil in this part is taken away
A large amount of thermal energy shows as waste electric energy.
Under current form, many design of Hydraulic System, manufacturer are by device energy conservation, and environmentally friendly, reliability is set as hydraulic pressure
Standby total guiding principle, so proposing requirements at the higher level to axial plunger pump manufacturer：Reliably, energy saving, meet functions of the equipments needs.
Invention content
Technical problem to be solved by the invention is to provide a kind of Self-controlling secondary Variable Control structure of plunger pump, structures
It is simple and reliable, can meet hydraulic press it is fast under, it is slow under, pressurize, slow upper, these upper Functional Requirements soon, and pass through and replace key zero
Part adjusts function switch point, improves the independence of client.
The technical solution adopted by the present invention to solve the technical problems is：A kind of Self-controlling secondary variable of plunger pump is provided
Control structure, including the pump housing and variable piston, the pump body is hollow and slides laterally and is disposed with variable piston, described
The both ends of the pump housing are sealed by variable flange A and variable flange B, and the outboard end of the variable flange A and variable flange B are placed in the middle
It is threaded with Adjusting bolt Adjusting screw A and Adjusting bolt Adjusting screw B respectively, one end of the variable piston is bigger diameter end, and the other end is path
End, bigger diameter end are extend into variable flange A, and miner diameter end extend into variable flange B and by preloading spring and adjusting spiral shell
It covers B to be connected, the inner cavity of variable flange A and variable flange B is connected with the oil inlet runner in the pump housing.
As a supplement to the technical solution of the present invention, laterally it is installed with adjusting spiral shell in the Adjusting bolt Adjusting screw B
Nail, the preloading spring are sleeved on the outside of adjusting screw.
As a supplement to the technical solution of the present invention, in the adjusting screw, positioned at Adjusting bolt Adjusting screw B's
One end is socketed with locking nut B.
Further, it is covered on the Adjusting bolt Adjusting screw A on the outside of variable flange A and the end faces variable flange B and Adjusting bolt Adjusting screw B
It is connected to locking nut A.
Further, head cover nut, institute are socketed on the outer free end of the Adjusting bolt Adjusting screw A and Adjusting bolt Adjusting screw B
The head cover nut and the end face of locking nut A stated are withstood.
Further, the fit clearance between the variable piston and variable flange A and variable flange B is 0.015
~0.025mm.
Advantageous effect
It is simple and reliable for structure the present invention relates to a kind of Self-controlling secondary Variable Control structure of plunger pump, become by being arranged
Measure the equalization point of piston sliding, and load be compared with the P values of equalization point, thus by the oriented sliding of variable piston come
The switching for realizing various functions, so as to meet hydraulic press it is fast under, it is slow under, pressurize, slow upper, these upper Functional Requirements soon, and
Function switch point is adjusted by replacing vital part, improves the independence of client, moreover it is possible to substantially reduce energy consumption, save electric energy.
Description of the drawings
Fig. 1 is the half-sectional topology view of the present invention；
Fig. 2 is the performance diagram of the present invention；
Fig. 3 is the use state structure chart of this patent.
Diagram：1, head cover nut；2, Adjusting bolt Adjusting screw A；3, locking nut A；4, variable flange A；5, variable piston；6, it pumps
Body；7, preloading spring；8, adjusting screw；9, Adjusting bolt Adjusting screw B；10, variable flange B；11, locking nut B；12, oil inlet runner.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
As shown in Figs. 1-3, embodiments of the present invention are related to a kind of Self-controlling secondary Variable Control structure of plunger pump, packet
Include the pump housing 6 and variable piston 5, which is characterized in that it 6 inner hollow of the pump housing and slides laterally and is disposed with variable piston 5, institute
The both ends for the pump housing 6 stated are sealed by variable flange A4 and variable flange B10, the variable flange A4 and variable flange B10
Outboard end be threaded with Adjusting bolt Adjusting screw A2 and Adjusting bolt Adjusting screw B9 respectively between two parties, one end of the variable piston 5 is major diameter
End, the other end is miner diameter end, and bigger diameter end is extend into variable flange A4, and miner diameter end extend into variable flange B10 and leads to
Preloading spring 7 is crossed with Adjusting bolt Adjusting screw B9 to be connected, the inner cavity of the variable flange A4 and variable flange B10 in the pump housing 6 into
Oil stream road 12 is connected.
As the present invention use principle, a diameter of D1 of the bigger diameter end of variable piston 5 here, miner diameter end it is a diameter of
D2, and the spring force of preloading spring 7 is F, when the equalization point in an intermediate position of variable piston 5, bigger diameter end and miner diameter end by
To pressure should be equal, therefore can obtain following formula according to the principle of dynamic balance：
Here P is the pressure that its both ends is subject to when variable piston 5 balances, due to oil inlet runner 12 and variable flange A4 and variable
Flange B10 is communicated simultaneously, therefore the pressure that the bigger diameter end and miner diameter end of variable piston 5 are subject to is equal；
It can obtain according to formula above：
Therefore in the case where variable piston 5 is constant, the spring force F of preloading spring 7 determines the balance at 5 both ends of variable piston
Pressure.
In actual moving process, as the actual loading P of plunger pump0<When P, left end movement of the variable piston 5 into Fig. 1,
And by other mechanisms in the linkage mechanism rotation pump in pump, realize the work of plunger huge discharge, it is fast to be reacted on press then
Function on lower or fast is realized；
As load P0>When P, right end movement of the variable piston 5 into Fig. 1, and by the linkage mechanism rotation pump in pump
Other mechanisms, plunger pump automatically switches to small displacement work, be reacted on press be then it is slow under, slow fast upper or pressure holding function
Realization.
When press pressurize, P0>P, plunger automatically switch to small displacement work.So only have the hydraulic oil of small displacement to pass through
Overflow valve oil return box, from the characteristic curve of Fig. 2 can one find out save 85% electric energy.
As a supplement to the technical solution of the present invention, laterally it is installed with adjusting spiral shell in the Adjusting bolt Adjusting screw B9
Nail 8, the preloading spring 7 is sleeved on the outside of adjusting screw 8, and the position of adjusting screw 8 can be adjusted by rotating adjusting screw 8
Set, due to variable piston 5 move right on earth when withstand with adjusting screw 8, therefore the position for adjusting adjusting screw 8 can be with
The minimum injection rate of plunger pump is set.
As a supplement to the technical solution of the present invention, in the adjusting screw 8, positioned at Adjusting bolt Adjusting screw B9
One end be socketed with locking nut B11, the position of adjusting screw 8 can be locked, is prevented by tightening locking nut B11
It is voluntarily rotated.
Further, the Adjusting bolt Adjusting screw A2 and Adjusting bolt Adjusting screw B9 being located on the outside of variable flange A4 and the end faces variable flange B10
On be socketed with locking nut A3, the position of Adjusting bolt Adjusting screw A2 and Adjusting bolt Adjusting screw B9 can be locked, Adjusting bolt Adjusting screw A2's
It locks position, it can also be ensured that the maximum pump discharge of plunger pump is constant.
Further, it is socketed with head cover nut 1 on the outer free end of the Adjusting bolt Adjusting screw A2 and Adjusting bolt Adjusting screw B9,
The head cover nut 1 and the end face of locking nut A3 is withstood, and head cover nut 1 can prevent the hydraulic pressure oil seepage in the pump housing.
Further, the fit clearance between the variable piston 5 and variable flange A4 and variable flange B10 is
0.015~0.025mm, such gap can ensure that variable piston 5 can move left and right, no bite phenomenon.
Variant structural of the present invention is simple and reliable, by be arranged variable piston slide equalization point, and will load with
The P values of equalization point are compared, to realize the switching of various functions by the oriented sliding of variable piston, so as to meet
Under hydraulic press is fast, it is slow under, pressurize, slow upper, these upper Functional Requirements soon, and adjust function switch by replacing vital part
Point improves the independence of client, moreover it is possible to substantially reduce energy consumption, save electric energy.
Claims (4)
1. a kind of Self-controlling secondary Variable Control structure of plunger pump, including the pump housing (6) and variable piston (5), which is characterized in that
It the pump housing (6) inner hollow and slides laterally and is disposed with variable piston (5), the both ends of the pump housing (6) pass through variable
The outboard end of flange A (4) and variable flange B (10) sealings, the variable flange A (4) and variable flange B (10) are distinguished between two parties
It is threaded with Adjusting bolt Adjusting screw A (2) and Adjusting bolt Adjusting screw B (9), one end of the variable piston (5) is bigger diameter end, and the other end is
Miner diameter end, bigger diameter end are extend into variable flange A (4), and miner diameter end is extend into variable flange B (10) and by pre-tightening bullet
Spring (7) is connected with Adjusting bolt Adjusting screw B (9), in the inner cavity of the variable flange A (4) and variable flange B (10) and the pump housing (6)
Oil inlet runner (12) is connected, and adjusting screw (8), the preloading spring (7) are laterally installed in the Adjusting bolt Adjusting screw B (9)
Be sleeved on the outside of adjusting screw (8), be located at Adjusting bolt Adjusting screw A (2) on the outside of variable flange A (4) and variable flange B (10) end face and
Locking nut A (3) is socketed on Adjusting bolt Adjusting screw B (9).
2. the Self-controlling secondary Variable Control structure of plunger pump according to claim 1, it is characterised in that：The adjusting
It is socketed with locking nut B (11) on screw (8), positioned at one end of Adjusting bolt Adjusting screw B (9).
3. the Self-controlling secondary Variable Control structure of plunger pump according to claim 1, it is characterised in that：The adjusting
Head cover nut (1), the head cover nut (1) and lock are socketed on the outer free end of swivel nut A (2) and Adjusting bolt Adjusting screw B (9)
It withstands the end face of tight nut A (3).
4. the Self-controlling secondary Variable Control structure of plunger pump according to claim 1, it is characterised in that：The variable
Fit clearance between piston (5) and variable flange A (4) and variable flange B (10) is 0.015~0.025mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247238.3A CN105822536B (en) | 2016-04-20 | 2016-04-20 | A kind of Self-controlling secondary Variable Control structure of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247238.3A CN105822536B (en) | 2016-04-20 | 2016-04-20 | A kind of Self-controlling secondary Variable Control structure of plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105822536A CN105822536A (en) | 2016-08-03 |
| CN105822536B true CN105822536B (en) | 2018-09-07 |
Family
ID=56526312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610247238.3A Active CN105822536B (en) | 2016-04-20 | 2016-04-20 | A kind of Self-controlling secondary Variable Control structure of plunger pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105822536B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630461B (en) * | 2019-09-24 | 2021-02-05 | 浙江瑞程石化技术有限公司 | Variable radial plunger pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS541404A (en) * | 1977-06-06 | 1979-01-08 | Kenji Kanamasu | Delivery volume pressure variable plunger pump |
| US20090097998A1 (en) * | 2007-10-10 | 2009-04-16 | The Coca-Cola Company | Fixed Displacement Pump |
| CN100595435C (en) * | 2008-07-09 | 2010-03-24 | 宁波恒力液压机械制造有限公司 | One-way hydraulic variable axial piston pump |
| CN102338077B (en) * | 2011-09-29 | 2013-11-20 | 宁波明和力盛液压科技有限公司 | SM stepless variable piston pump |
| CN202789837U (en) * | 2012-03-28 | 2013-03-13 | 宁波明和力盛液压科技有限公司 | Variable oil cylinder with glyd ring |
| CN205714707U (en) * | 2016-04-20 | 2016-11-23 | 宁波明和力盛液压科技有限公司 | A kind of Self-controlling secondary Variable Control structure of plunger displacement pump |
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2016
- 2016-04-20 CN CN201610247238.3A patent/CN105822536B/en active Active
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| Publication number | Publication date |
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| CN105822536A (en) | 2016-08-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An automatic control secondary variable control structure of plunger pump Effective date of registration: 20210828 Granted publication date: 20180907 Pledgee: Ningbo Beilun Rural Commercial Bank Co.,Ltd. qijiashan sub branch Pledgor: NINGBO MINGHE LISHENG HYDRAULIC TECHNOLOGY Co.,Ltd. Registration number: Y2021980008515 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20180907 Pledgee: Ningbo Beilun Rural Commercial Bank Co.,Ltd. qijiashan sub branch Pledgor: NINGBO MINGHE LISHENG HYDRAULIC TECHNOLOGY Co.,Ltd. Registration number: Y2021980008515 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A self controlled secondary variable control structure for a plunger pump Granted publication date: 20180907 Pledgee: Ningbo Beilun Rural Commercial Bank Co.,Ltd. qijiashan sub branch Pledgor: NINGBO MINGHE LISHENG HYDRAULIC TECHNOLOGY Co.,Ltd. Registration number: Y2024980040385 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |