CN2660169Y - Mechanical diaphragm position control system - Google Patents
Mechanical diaphragm position control system Download PDFInfo
- Publication number
- CN2660169Y CN2660169Y CN 03284556 CN03284556U CN2660169Y CN 2660169 Y CN2660169 Y CN 2660169Y CN 03284556 CN03284556 CN 03284556 CN 03284556 U CN03284556 U CN 03284556U CN 2660169 Y CN2660169 Y CN 2660169Y
- Authority
- CN
- China
- Prior art keywords
- valve
- limiting valve
- plate
- limited
- spring
- 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
- 238000012856 packing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract 2
- 230000004888 barrier function Effects 0.000 description 33
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006071 cream Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a mechanical membrane position control system. The utility model comprises a hydraulic cylinder in which a limiting valve is equipped; the utility model is characterized in that the limiting valve (1) is a cylindrical one with unequal steps and the middle part of the limiting valve (1) is installed in a limiting valve sleeve (3) in sliding fit; a limiting valve spring (2) is vertically fixed between the front step of the limiting valve (1) and the limiting valve sleeve (3); a spring base (7) and an oil recharging valve plate (5) are both fit over the back part of the limiting valve (1); the back end is blocked by a spring retainer ring (8); the end face of the oil recharging valve plate (5) is a slab one and matched with the end face of the limiting valve sleeve (3); an oil recharging spring (6) is vertically fixed between the oil recharging valve plate (5) and the spring base (7); the external circle of the limiting valve sleeve (3) is in sliding fit with a hydraulic cylinder (4). The oil recharging valve plate (5) and the limiting valve sleeve (3) are equipped in cone fit. The utility model ensures that the membrane working performance is safe and reliable; the process and structure are simple and the difficulty for part processing and cost are reduced.
Description
Technical field
The utility model belongs to the fluid end structure of flexible working pump, is specifically related to a kind of mechanical type diaphragm position control system.
Background technique
In prior art, the metering pump of domestic production, the control of diaphragm displacement all is by the forward and backward confinement plate of barrier film, control by pressure high and low, when the hydraulic oil in the hydraulic pressure cavity was few, the inclined to one side post deflection of barrier film meeting was when barrier film is attached to the back confinement plate, plunger continues to move backward, because barrier film is limited plate and blocks and can not move backward, will cause the pressure in the hydraulic pressure cavity to reduce like this, under the effect of pressure, Fill valve is opened, and hydraulic oil will add in the hydraulic pressure cavity; Otherwise, when the hydraulic oil in the diaphragm cavity is many, deflection before the barrier film meeting partially, before barrier film is attached to confinement plate the time, plunger continues to move forward, because barrier film is limited plate and blocks and can not move forward, will cause the pressure in the hydraulic pressure cavity to raise like this, under the effect of pressure, pump oil safety valve is opened, and unnecessary hydraulic oil will turn back to the safety seemingly of the type hydraulic driving diaphragm pump in the shoe cream room, in fact, barrier film often is attached on the forward and backward confinement plate, also can damage the working life of diaphragm.On the one hand, the flowing hole on the barrier film confinement plate can not have wedge angle, and the degree of finish of barrier film confinement plate top-surface camber also must be high, otherwise diaphragm will be worn by pressure, is damaged to I haven't seen you for ages; On the other hand, be exactly that flowing hole on the barrier film confinement plate is not with wedge angle, the degree of finish of barrier film confinement plate top-surface camber is also very high, and barrier film often contacts with forward and backward confinement plate, can cause the fatigue damage of barrier film near barrier film confinement plate flowing hole, can reduce widely the working life of diaphragm.In addition, the solid particle on the preceding confinement plate can damage barrier film too, so the diaphragm pump of this structure still exists fatal defective in design, the working life of barrier film is very low.
At present, with German LEWA and Bran+Luebbe company be the most displacement of adopting the method for directly controlling diaphragm position to limit barrier film of control of the external advanced metering pump product diaphragm displacement of representative.The LEWA company hydraulic driving diaphragm pump diaphragm position control system of Germany is by controlling at the limited valve of barrier film back.Its working principle is: a Fill valve is set below limited valve, when the degree of vacuum of Fill valve top is 20%, Fill valve is opened, and hydraulic oil will add in the hydraulic pressure cavity, but Fill valve is not directly to communicate with hydraulic pressure cavity, but pass through limited valve, as long as barrier film does not arrive the control point of back, limited valve just can not opened, when having only limited valve to open, Fill valve just can be opened, thereby has realized the control of diaphragm position.But in actual production process, the sealing between limited valve and the liquid cylinder is to realize by the gap between limited valve and the liquid cylinder, requires the precision of processing very high, and the effect of sealing also is difficult to control.
Germany Bran+Luebbe company hydraulic driving diaphragm pump diaphragm position control system also is by controlling at the limited valve of barrier film back, be mechanical type diaphragm position control system, but the unlatching of Fill valve also realizes by pressure; The defective of this structure is still to have kept confinement plate behind the barrier film of original structure, and in the pump operation process, confinement plate still exists the damage of barrier film behind the barrier film.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes prior art, provides a kind of barrier film service behaviour that can make safe and reliable, technology, mechanical type diaphragm position control system simple in structure.
The technical solution of the utility model is: mechanical type diaphragm position control system, comprise limited valve is housed in the hydraulic cylinder, it is characterized in that: limited valve (1) is step and does not wait cylindric, limited valve (1) middle part is in the spacing valve pocket (3) of packing into movingly, limited valve spring (2) vertical fixing is between the step and spacing valve pocket (3) of limited valve (1) front end, spring seat (7) and repairing valve plate (5) are the rear portion that is set in limited valve (1) side by side, follower head blocks with check ring (8), the end face that the end face of repairing valve plate (5) is plate and spacing valve pocket (3) cooperates, Fill valve spring (6) is vertical fixing between repairing valve plate (5) and spring seat (7), and the cylindrical of spacing valve pocket (3) and hydraulic cylinder (4) are movingly.
Described repairing valve plate (5) and spacing valve pocket (3) also can be designed to tapered cooperation.
Working principle of the present utility model is: directly reflect the displacement amount of barrier film by limited valve (1), when the displacement amount of barrier film in allowed limits the time, limited valve (1) just can not run into repairing valve plate (5), and repairing valve plate (5) just can not opened; But when the displacement amount of barrier film surpasses in the scope that allows, limited valve (1) will back down repairing valve plate (5), hydraulic oil will be under the effect of pressure reduction, cover in the liquid cylinder, this moment, barrier film was attached on the barrier film profile on the liquid cylinder, because barrier film profile and limited valve (1) form a zone smooth and very close to each other, barrier film can not be subjected to any damage.
The utility model has the advantages that: 1, ensured the safe and reliable of barrier film service behaviour; 2, process structure is simple, has reduced the difficulty and the cost of component processing.
Description of drawings:
The plan view of Fig. 1 fluid end
The sectional drawing of Fig. 2 fluid end
Fig. 3 structural representation of the present utility model
Fig. 4 the utility model repairing valve plate is the tapered schematic representation that cooperates with spacing valve pocket
The spacing valve pocket 4-of 1-limited valve 2-limited valve spring 3-hydraulic cylinder 5-repairing valve plate 6-Fill valve spring 7-spring seat 8-back-up ring
Embodiment
Further describe the utility model below in conjunction with accompanying drawing, Fig. 1 is that plan view Fig. 2 of fluid end is the sectional drawing of fluid end; As shown in Figure 3: mechanical type diaphragm position control system, comprise limited valve is housed in the hydraulic cylinder, limited valve 1 is step and does not wait cylindric, limited valve 1 middle part is in the spacing valve pocket 3 of packing into movingly, limited valve spring 2 vertical fixing are between the step and spacing valve pocket 3 of limited valve 1 front end, spring seat 7 and repairing valve plate 5 are set in the rear portion of limited valve 1 side by side, follower head blocks with check ring 8, the end face that the end face of repairing valve plate 5 is plate and spacing valve pocket 3 cooperates, Fill valve bullet 6 is vertical fixing between repairing valve plate 5 and spring seat 7, and the cylindrical of spacing valve pocket 3 and hydraulic cylinder 4 are movingly.Repairing valve plate 5 also can be tapered the cooperation with spacing valve pocket 3 as shown in Figure 4.
Claims (2)
1, mechanical type diaphragm position control system, comprise limited valve is housed in the hydraulic cylinder, it is characterized in that: limited valve (1) is step and does not wait cylindric, limited valve (1) middle part is in the spacing valve pocket (3) of packing into movingly, limited valve spring (2) vertical fixing is between the step and spacing valve pocket (3) of limited valve (1) front end, spring seat (7) and repairing valve plate (5) are set in the rear portion of limited valve (1) side by side, follower head blocks with check ring (8), the end face that the end face of repairing valve plate (5) is plate and spacing valve pocket (3) cooperates, Fill valve spring (6) is vertical fixing between repairing valve plate (5) and spring seat (7), and the cylindrical of spacing valve pocket (3) and hydraulic cylinder (4) are movingly.
2, mechanical type diaphragm position control system according to claim 1 is characterized in that, repairing valve plate (5) is tapered with spacing valve pocket (3) and cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03284556 CN2660169Y (en) | 2003-07-29 | 2003-07-29 | Mechanical diaphragm position control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03284556 CN2660169Y (en) | 2003-07-29 | 2003-07-29 | Mechanical diaphragm position control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660169Y true CN2660169Y (en) | 2004-12-01 |
Family
ID=34332897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03284556 Expired - Fee Related CN2660169Y (en) | 2003-07-29 | 2003-07-29 | Mechanical diaphragm position control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660169Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422426A (en) * | 2015-12-11 | 2016-03-23 | 重庆水泵厂有限责任公司 | Mechanical type control device for diaphragm stroke |
| CN111502976A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Oil supply control device for diaphragm pump |
-
2003
- 2003-07-29 CN CN 03284556 patent/CN2660169Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422426A (en) * | 2015-12-11 | 2016-03-23 | 重庆水泵厂有限责任公司 | Mechanical type control device for diaphragm stroke |
| CN111502976A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Oil supply control device for diaphragm pump |
| CN111502976B (en) * | 2020-04-15 | 2024-06-18 | 陕西航天动力高科技股份有限公司 | Oil supplementing control device for diaphragm pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DAQING DEMEI TE ER PUMP MANUFACTURING CO., LTD. Free format text: FORMER OWNER: HAN SHUMIN Effective date: 20051216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20051216 Address after: 163316 No. 234, Daqing hi tech Development Zone, Heilongjiang, Jianshe Road Patentee after: Daqing Demeiteer Pump Manufacture Co., Ltd. Address before: Dunhuang Shahekou District of Dalian city of Liaoning Province, No. 85 South Street 222116022 Patentee before: Han Shumin |
|
| C56 | Change in the name or address of the patentee |
Owner name: HAN SHUMIN Free format text: FORMER NAME OR ADDRESS: DAQING DEMEI TE ER PUMP MANUFACTURING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 116022 2-2-2, 85 South Street, Shahekou District, Liaoning, Dalian, Dunhuang Patentee after: Han Shumin Address before: 163316 No. 234, Daqing hi tech Development Zone, Heilongjiang, Jianshe Road Patentee before: Daqing Demeiteer Pump Manufacture Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: DALIAN XIWANG PUMP CO., LTD. Free format text: FORMER OWNER: HAN SHUMIN Effective date: 20071116 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071116 Address after: 116022 2-2-2, 85 South Street, Shahekou District, Liaoning, Dalian, Dunhuang Patentee after: Dalian hope Pump Co., Ltd. Address before: 116022 2-2-2, 85 South Street, Shahekou District, Liaoning, Dalian, Dunhuang Patentee before: Han Shumin |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041201 Termination date: 20100729 |