CN103629088A - Novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation - Google Patents
Novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation Download PDFInfo
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- CN103629088A CN103629088A CN201310602117.2A CN201310602117A CN103629088A CN 103629088 A CN103629088 A CN 103629088A CN 201310602117 A CN201310602117 A CN 201310602117A CN 103629088 A CN103629088 A CN 103629088A
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Abstract
The invention belongs to the field of delivery metering devices, and particularly relates to a hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation. The novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil supplementing is characterized in that a front pump head, a rear pump head, an R plate, a diaphragm, a safety valve, a compensation valve, a limiting valve and a cylinder sleeve assembly are arranged at a hydraulic part, a paraboloid-shaped front-pump-head R cavity is formed in the inner side of the front pump head, the front-pump-head R cavity is covered with the diaphragm, the outer edge of the diaphragm is buckled with the R plate, the rear pump head is in sealing connection with the front pump head, the R plate and the diaphragm are located between the front pump head and the rear pump head, and the front-pump-head R cavity is communicated with a delivery pipe of the front pump head. According to the technical scheme of the hydraulic diaphragm metering pump, the service life of the diaphragm is prolonged, meanwhile, safety operation of the hydraulic diaphragm metering pump is guaranteed, and the metering accuracy of the hydraulic diaphragm metering pump is improved.
Description
Technical field
The invention belongs to conveying and metering apparatus field, particularly a kind of Hydraulic Diaphragm Metering Pump that can all press spacing repairing.
Background technique
Hydraulic diaphragm metering pump is a kind of diaphragm-type reciprocating pump, is widely used in scientific research and the production departments such as oil, rock gas, chemical industry, atomic energy technology, power station, papermaking, plastics, food, medicine, environmental protection, drinking-water, sewage treatment, weaving and mine.Its working principle is: driven by motor worm gear pair, by inclined to one side mechanism, rotatablely moving of motor changed into the to-and-fro motion of plunger, and by the to-and-fro motion promotion hydraulic oil of plunger, hydraulic oil promotes suction and the discharge that barrier film moves reciprocatingly to realize medium.
Induction stroke: when slide bar drives plunger to move backward, cylinder sleeve internal volume increases, produce negative pressure, barrier film moves backward, and between barrier film and front pump head, volume also increases thereupon, the one-way valve of suction line " is opened ", medium in inlet ductwork enters in pump head R chamber, and when induction stroke finishes, diaphragm movement moment stops, pump head internal pressure and inlet tube internal pressure balance, import one-way valve resets.
Discharge stroke: when slide bar drives plunger to move forward, plunger promotes barrier film by hydraulic oil and travels forward, pump head internal pressure raises at once, when pump head pressure " opening " outlet one-way valve during higher than outlet pressure, the medium in pump head enters discharge conduit, when discharge stroke finishes, moment stops diaphragm movement again, pressure in pump head equates with outlet pressure, exports one-way valve and resets, and then enters next circulation.
In real work, induction stroke medium is pump head R chamber before entering under negative suction, that is to say that barrier film both sides exist pressure reduction, when induction stroke finishes and in discharge stroke not yet starts, barrier film can be close on R plate, and pressure reduction still exists, and barrier film still can be subject to the extruding of this pressure reduction, cause barrier film compressive deformation, even break.Diaphragm deflection acutely will have a strong impact on the measuring accuracy of diaphragm pump, and membrane ruptures will make metering pump work.
How to protect barrier film be not extruded distortion or break, guarantee that the accuracy of metering is diaphragm metering pump key point the working life that extends barrier film simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing, can be to even spacing repairing, the accuracy that extends the working life of barrier film and guarantee to measure.
For achieving the above object, the technical solution adopted in the present invention is: a kind of novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing, is included in hydraulic part front pump head, rear pump head, R plate, barrier film, safety valve, recuperation valve, limited valve and cylinder sleeve component are set, the inner side of described front pump head is provided with the front pump head R chamber of parabolic shape, described barrier film covers on front pump head R chamber, described R plate fastens barrier film outer, described rear pump head and front pump head are tightly connected, described R plate and barrier film are between front pump head and rear pump head, the delivery line UNICOM of described front pump head R chamber and front pump head, described rear pump head is connected with cylinder sleeve component, described cylinder sleeve component comprises cylinder sleeve and plunger that can be reciprocal in cylinder sleeve, described rear pump head is provided with safety valve, pressure duct UNICOM in described safety valve and rear pump head, working line UNICOM in described pressure duct and rear pump head, rear pump head R chamber UNICOM between described working line and R plate and barrier film, the cylinder sleeve chamber UNICOM of described working line and cylinder sleeve component, described limited valve is arranged in rear pump head, described limited valve comprises spool and valve pocket, described valve pocket is connected on rear pump head, described spool passes R plate in rear pump head R chamber, on described valve pocket, be provided with repairing through hole, described spool is provided with repairing annular groove, the repairing pipeline UNICOM arranging in described repairing through hole one end and cylinder sleeve chamber UNICOM's the other end and rear pump head, described recuperation valve is arranged on repairing pipeline, described recuperation valve is by repairing pipeline and oil pocket UNICOM.
Between barrier film and rear pump head, form hydraulic oil seal space.
Induction stroke: when plunger moves backward, cylinder sleeve internal volume increases, produce negative pressure, barrier film moves backward, between barrier film and front pump head, volume also increases thereupon, the suction one-way valve opens of delivery line, medium enters in front pump head R chamber, this process septation promotes the valve core movement of limited valve, and the repairing through hole UNICOM of the repairing annular groove on spool and valve pocket, when negative pressure surpasses setting, recuperation valve is opened, oil pocket flows in rear pump head R chamber by recuperation valve, repairing pipeline, rear pump head R cavity pressure and oil pocket isostasy, and barrier film negative pressure is removed.
Discharge stroke: when plunger moves forward, plunger promotes barrier film by hydraulic oil and travels forward, front pump head R cavity pressure raises at once, delivery line outlet one-way valve opens, this process septation is gradually away from rear pump head R chamber, spool in limited valve also travels forward, and the repairing annular groove on spool and the repairing through hole of valve pocket disconnect.If the safety valve of the too high ，Ze pressure duct of rear pump head R cavity pressure UNICOM can start, lay down too much hydraulic oil, guarantee the safe operation of equipment.
Described limited valve comprises spool, valve pocket and is enclosed within the O RunddichtringO on valve pocket, described valve core housing is located in valve pocket, spool is provided with Returnning spring between valve pocket, one end of spool is provided with barrier film positive stop, the other end is provided with back-up ring, and the distance of the spacing block of barrier film to the distance of valve pocket and described repairing annular groove to repairing through hole equates.Described spool and valve pocket matching gap are 0.005～0.008mm.Block has more large contact surface and barrier film effect, and it is excessive that back-up ring can limit valve core movement, and block is equal to the distance of repairing through hole to distance and the described repairing annular groove of valve pocket, effectively controls repairing process, in rear pump head R chamber, all presses and is protected.Because limited valve has very high requirements of tightness, reciprocating frequence is very high simultaneously, very high to its hardness requirement, selects Bearing Steel to make.
Described safety valve is provided with reclaim line, described reclaim line and oil pocket UNICOM.The hydraulic oil that reclaim line can be released pressure duct flows back in oil pocket.
Described safety valve, recuperation valve, limited valve are with being threaded on rear pump head.Be threaded and guaranteed the steadiness of installing.
Described pressure duct enters safety valve by two places.
Described O RunddichtringO be two all be set on described valve pocket.
Beneficial effect of the present invention:
By limited valve is set, repairing annular groove on spool, the repairing through hole of valve pocket, recuperation valve, repairing pipeline coordinate and can unload too low negative pressure in rear pump head R chamber by the mode of compensation hydraulic oil, avoid barrier film to cling on R plate, also just avoided the loss of R plate to barrier film, by the structure of safety valve and pressure duct is set, can bleed off the unnecessary hydraulic oil in hydraulic seal cavity, avoided the infringement of overpressure to barrier film in discharge process, extend the working life of barrier film, also ensured the safe operation of equipment simultaneously; Improved the accuracy of Hydraulic Diaphragm Metering Pump metering.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is limited valve structural representation in structure of the present invention.
Fig. 3 is safety valve structure schematic diagram in structure of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is made to specific descriptions.
As Figure 1-3: a kind of novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing, is included in hydraulic part front pump head 1, rear pump head 2, R plate 3, barrier film 4, safety valve 5, recuperation valve 6, limited valve 7 and cylinder sleeve component 8 are set, the inner side of described front pump head 1 is provided with the front pump head R chamber 1-0 of parabolic shape, described barrier film 4 covers on front pump head R chamber 1-0, described R plate 3 fastens barrier film 4 outers, described rear pump head 2 is tightly connected with front pump head 1, described R plate 3 and barrier film 4 are between front pump head 1 and rear pump head 2, the delivery line UNICOM of described front pump head R chamber 1-0 and front pump head 1, described rear pump head 2 is connected with cylinder sleeve component 8, described cylinder sleeve component 8 comprises cylinder sleeve 8-1 and plunger 8-2 that can be reciprocal in cylinder sleeve, described rear pump head 2 is provided with safety valve 5, 2 pressure duct 2-1 UNICOM in described safety valve 5 and rear pump head, described pressure duct 2-1 and the working line UNICOM in rear pump head 2, rear pump head R Qiang2-0 UNICOM between described working line and R plate 3 and barrier film 4, the cylinder sleeve chamber UNICOM of described working line and cylinder sleeve component 8, described limited valve 7 is arranged in rear pump head 2, described limited valve 7 comprises spool 7-2 and valve pocket 7-1, described valve pocket 7-1 is connected on rear pump head 2, described spool 7-2 passes R plate 3 in rear pump head R chamber 2-0, on described valve pocket 7-1, be provided with repairing through hole 7-6, described spool 7-2 is provided with repairing annular groove 7-7, the repairing pipeline 2-4 UNICOM of described repairing through hole 7-6 one end and cylinder sleeve chamber UNICOM's the other end and the 2 interior settings of rear pump head, described recuperation valve 6 is arranged on repairing pipeline 2-4, described recuperation valve 6 is by repairing pipeline 2-3Yu oil pocket UNICOM.
Between barrier film 4 and rear pump head 2, form hydraulic oil seal space.
Induction stroke: when plunger 8-2 moves backward, cylinder sleeve 8-1 internal volume increases, produce negative pressure, barrier film 4 moves backward, between barrier film 4 and front pump head R chamber 1-0, volume also increases thereupon, the suction one-way valve 1-2 of delivery line opens, medium enters in front pump head R chamber 1-0, this process septation 4 promotes the spool 7-1 motion of limited valve 7, the repairing through hole 7-6 UNICOM of repairing annular groove 7-7 on spool 7-2 and valve pocket 7-1, when surpassing, negative pressure sends out regularly, recuperation valve 6 is opened, hydraulic oil in oil pocket is by recuperation valve 6, repairing pipeline 2-3 flows in rear pump head R chamber 2-0, 2-0 pressure and oil pocket isostasy in rear pump head R chamber, barrier film 4 negative pressure are removed.
Discharge stroke: when plunger moves forward, plunger 8-2 promotes barrier film 4 by hydraulic oil and travels forward, front pump head R chamber 1-0 internal pressure raises at once, delivery line outlet one-way valve 1-1 opens, this process septation 4 is gradually away from rear pump head R chamber 2-0, spool 7-1 in limited valve 7 also travels forward, and the repairing through hole 7-6 of the repairing annular groove 7-7 on spool 7-2 and valve pocket 7-1 disconnects.If rear pump head R chamber 2-0 overpressure, the safety valve 5 of pressure duct 2-1 UNICOM can start, and lays down too much hydraulic oil, guarantees the safe operation of equipment.
Described limited valve 7 comprises spool 7-2, valve pocket 7-1 and is enclosed within the O RunddichtringO 7-4 on valve pocket 7-1, described spool 7-2 is sheathed in valve pocket 7-1, spool 7-2 is provided with Returnning spring 7-3 between valve pocket 7-1, one end of spool 7-2 is provided with the spacing block 7-5 of barrier film, the other end is provided with back-up ring 7-8, and the distance of the spacing block 7-5 of barrier film to the distance of valve pocket 7-1 and described repairing annular groove 7-7 to repairing through hole 7-6 equates.Described spool 7-2 and valve pocket 7-1 matching gap are 0.005～0.008mm.Block 7-5 has more large contact surface and barrier film 4 effects, it is excessive that back-up ring 7-8 can limit spool 7-2 motion, block 7-5 is equal to the distance of repairing through hole to distance and the described repairing annular groove 7-7 of valve pocket 7-1, effectively controls repairing process, in rear pump head R chamber 2-0, all presses and is protected.Because limited valve 7 has very high requirements of tightness, reciprocating frequence is very high simultaneously, very high to its hardness requirement, selects Bearing Steel to make.
Described safety valve 5 is provided with reclaim line 5-1, described reclaim line 5-1Yu oil pocket UNICOM.The hydraulic oil that reclaim line 5-1 can release pressure duct 2-1 flows back in oil pocket.
Described safety valve 5, recuperation valve 6, limited valve 7 use are threaded on rear pump head 2.Be threaded and guaranteed the steadiness of installing.
Described pressure duct 2-1 two places enter safety valve.
All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (8)
1. a novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing, is characterized in that, pump head, rear pump head, R plate, barrier film, safety valve, recuperation valve, limited valve and cylinder sleeve component before hydraulic part arranges, the inner side of described front pump head is provided with the front pump head R chamber of parabolic shape, described barrier film covers on front pump head R chamber, described R plate fastens barrier film outer, described rear pump head and front pump head are tightly connected, described R plate and barrier film are between front pump head and rear pump head, the R chamber of described front pump head and the delivery line UNICOM of front pump head, described rear pump head is connected with cylinder sleeve component, described cylinder sleeve component comprises cylinder sleeve and stick harness that can be reciprocal in cylinder sleeve, described rear pump head is provided with safety valve, pressure duct UNICOM in described safety valve and rear pump head, working line UNICOM in described pressure duct and rear pump head, rear pump head R chamber UNICOM between described working line and R plate and barrier film, the cylinder sleeve chamber UNICOM of described working line and cylinder sleeve component, described limited valve is arranged in rear pump head, described limited valve comprises spool and valve pocket, described valve pocket is connected on rear pump head, described spool passes R plate in rear pump head R chamber, on described valve pocket, be provided with repairing through hole, described spool is provided with repairing annular groove, the repairing pipeline UNICOM arranging in described repairing through hole one end and cylinder sleeve chamber UNICOM's the other end and rear pump head, described recuperation valve is arranged on repairing pipeline, described recuperation valve is by repairing pipeline and oil pocket UNICOM.
2. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, it is characterized in that, described limited valve comprises spool, valve pocket and is enclosed within the O RunddichtringO on valve pocket, described valve core housing is located in valve pocket, spool is provided with Returnning spring between valve pocket, one section of spool is provided with the spacing block of barrier film, and the other end is provided with back-up ring, and barrier film positive stop is equal to the distance of repairing through hole to distance and the described repairing annular groove of valve pocket.
3. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, is characterized in that, described spool and valve pocket matching gap are 0.005～0.008mm.
4. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, is characterized in that, described safety valve is provided with reclaim line, described reclaim line and oil pocket UNICOM.
5. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, is characterized in that, described safety valve, recuperation valve, limited valve are with being threaded on rear pump head.
6. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, is characterized in that, described pressure duct enters safety valve by two places.
7. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 1, is characterized in that, described O RunddichtringO be two all be set on described valve pocket.
8. novel Hydraulic Diaphragm Metering Pump of all pressing spacing repairing as claimed in claim 3, is characterized in that, described spool, valve pocket, block, back-up ring are made of Bearing Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602117.2A CN103629088A (en) | 2013-11-22 | 2013-11-22 | Novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310602117.2A CN103629088A (en) | 2013-11-22 | 2013-11-22 | Novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation |
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| CN103629088A true CN103629088A (en) | 2014-03-12 |
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| CN201310602117.2A Pending CN103629088A (en) | 2013-11-22 | 2013-11-22 | Novel hydraulic diaphragm metering pump capable of carrying out pressure-equalizing limiting oil compensation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088777A (en) * | 2014-05-27 | 2014-10-08 | 德帕姆(杭州)泵业科技有限公司 | Metering pump with quantitatively-compressed diaphragm |
| CN105484964A (en) * | 2016-01-08 | 2016-04-13 | 成都市天仁自动化科技有限公司 | Metering type outlet liquid metering system of automatic liquid selling machine pump and metering method thereof |
| CN106969174A (en) * | 2017-05-22 | 2017-07-21 | 德帕姆(杭州)泵业科技有限公司 | Exhaust pressure relief valve |
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN115182872A (en) * | 2022-08-05 | 2022-10-14 | 德帕姆(杭州)泵业科技有限公司 | Positive displacement piston pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088777A (en) * | 2014-05-27 | 2014-10-08 | 德帕姆(杭州)泵业科技有限公司 | Metering pump with quantitatively-compressed diaphragm |
| CN105484964A (en) * | 2016-01-08 | 2016-04-13 | 成都市天仁自动化科技有限公司 | Metering type outlet liquid metering system of automatic liquid selling machine pump and metering method thereof |
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| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN109538451B (en) * | 2019-01-14 | 2024-03-26 | 沈阳远大压缩机有限公司 | Hydraulic guide type sealing membrane head of ultrahigh pressure diaphragm compressor |
| CN115182872A (en) * | 2022-08-05 | 2022-10-14 | 德帕姆(杭州)泵业科技有限公司 | Positive displacement piston pump |
| CN115182872B (en) * | 2022-08-05 | 2024-01-26 | 德帕姆(杭州)泵业科技有限公司 | Volumetric piston pump |
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Address after: 310018 Hangzhou City, Zhejiang Province Economic and Technological Development Zone No. 20, No. 658 Depam Street (Hangzhou) Pump Technology Co. Ltd. Applicant after: Depamu (Hangzhou) Pump Technology Co., Ltd. Address before: 310018, Zhejiang, Hangzhou economic and Technological Development Zone, No. 3, No. 3, 3 Avenue (Hangzhou) Pump Technology Co., Ltd., Hangzhou Applicant before: Depamu (Hangzhou) Pump Technology Co., Ltd. |
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Application publication date: 20140312 |