CN103671042A - Double-layer membrane device capable of prolonging fatigue life of membrane for metering pump - Google Patents
Double-layer membrane device capable of prolonging fatigue life of membrane for metering pump Download PDFInfo
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- CN103671042A CN103671042A CN201310737648.2A CN201310737648A CN103671042A CN 103671042 A CN103671042 A CN 103671042A CN 201310737648 A CN201310737648 A CN 201310737648A CN 103671042 A CN103671042 A CN 103671042A
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- metering pump
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Abstract
The invention discloses a double-layer membrane device capable of prolonging the fatigue life of a membrane for a metering pump. The double-layer membrane device comprises a membrane body (2), and is characterized in that the membrane body (2) comprises a front membrane body (4) and a rear membrane body (6), the front membrane body (4) is provided with a front bent portion (41), the rear membrane body (6) is provided with a rear bent portion (61), the front bent portion (41) and the rear bent portion (61) are correspondingly arranged, and a gap (8) is formed between the front bent portion (41) and the rear bent portion (61). The double-layer membrane device can bear higher pressure intensity, the replacement cycle of the membrane is longer, the structure is simple, the arrangement is reasonable, and the manufacturing cost is lower.
Description
Technical field
The present invention relates to a kind of metering pump, relate in particular to a kind of barrier film double-deck diaphragm apparatus of metering pump of fatigue life that extends.
Background technique
Metering pump be a kind of flow can be within the scope of 0-100% step-less adjustment, be used for carrying a kind of special displacement pump of liquid (particularly corrosive liquids).Development along with modern industry automaticity, the use of metering pump is more and more extensive, yet, in long-term use, find, the barrier film of installing on most of metering pumps only can bear lower pressure, particularly due to creep and the fatigue failure of diaphragm material, can shorten gradually the working life of barrier film, cause the diaphragm replacing cycle shorter, and some abnormal conditions or replacing in time of barrier film, can cause membrane ruptures, after membrane ruptures, medium can directly be leaked to outside, and cannot reveal early warning, therefore to use, great inconvenience and certain danger have been brought.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind ofly can bear higher pressure and longer diaphragm apparatus of replacement cycle.
For solving the problems of the technologies described above, the invention provides a kind of barrier film double-deck diaphragm apparatus of metering pump of fatigue life that extends, comprise septum body, described membrane body comprises front membrane body and rear membrane body, on described front membrane body, there is a front curve, curved part after thering is one on described rear membrane body, described front curve and described rear curved part be corresponding arrange and between be formed with gap.
Described front curve is circular arc curved part.
Described rear curved part is circular arc curved part.
The crooked radian of described front curve is less than the crooked radian of described rear curved part.
Beneficial effect of the present invention is: 1. due to the prolongation barrier film of the present invention double-deck diaphragm apparatus of metering pump of fatigue life, comprised the bimodulus structure that front membrane body and rear mould body form, during use, first pressurized is the front membrane body contacting with medium, metacneme body is pressurized not now, after the long-term use of current membrane body, understand Creep Deformation gradually, simultaneously due to fatigue damage, the front curve of front membrane body can be affixed to rear mould body, now, although deformation of front diaphragm body, but the existence due to metacneme body, pump still can run well, without change diaphragm at once, extended the cycle of diaphragm replacing.And now front membrane body and rear membrane body while pressurized, compare single-layer membrane structure, and of the present invention pair of membrane structure has stronger toughness, and therefore, toughness of the present invention is better, can bear higher pressure, and has extended the cycle of diaphragm replacing.
2. due to the prolongation barrier film of the present invention double-deck diaphragm apparatus of metering pump of fatigue life, comprised the bimodulus structure that front membrane body and rear mould body form, when current membrane body breaks, medium can not leak into outside at once, but Clearance Flow between two diaphragms, simultaneously, can also be at gap location setting pressure table or the pressure transducer of two films, so just, can play the safety warning function that membrane ruptures is reported to the police, at material from leakage to before atmosphere, can the pump housing be closed down and be disposed, therefore, the good while of sealing of the present invention, simple in structure, arrange rationally, and fabricating cost is lower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: septum body 2, front membrane body 4, front curve 41, rear membrane body 6, rear curved part 61, gap 8.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details: shown in Figure 1, a kind of barrier film double-deck diaphragm apparatus of metering pump of fatigue life that extends of the present invention, comprise septum body 2, this septum body 2 comprises front membrane body 4 and rear membrane body 6, the front curve 41 on front membrane body 4 with a circular arc, the rear curved part 61 on rear membrane body 6 with a circular arc, this front curve 41 and described rear curved part 61 be corresponding arrange and between be formed with gap 8, in actual use, first pressurized is the front membrane body 4 contacting with medium, this front membrane body 4 is understood Creep Deformation gradually after long-term use, simultaneously due to fatigue damage, the front curve 41 of front membrane body 4 can be affixed to rear mould body 6, now, although deformation of front diaphragm body 4, but the existence due to metacneme body 6, pump still can run well, without change diaphragm at once, extended the cycle of diaphragm replacing.Front membrane body 4 and rear membrane body 6 pressurized simultaneously now, compare single-layer membrane structure, two membrane structures that front mould body 4 and rear mould body 6 form have stronger toughness, so can bear higher pressure in use, can extend the working life of barrier film simultaneously, thereby the trouble that can avoid frequently maintenance or replacing barrier film and bring, in addition, when current membrane body 4 breaks, medium can not leak into outside at once, but gap 8 between front membrane body 4 and rear membrane body 6 is interior, flow, so not only guaranteed the sealing of the pump housing, simultaneously, can also be at gap location setting pressure table or the pressure transducer of front membrane body 4 and rear membrane body 6, thereby can play very easily the safety warning function that membrane ruptures is reported to the police, at material from leakage to before atmosphere, can the pump housing be closed down and be disposed.
For making the actual quantity of more simple, the reasonable front curve 41 of structure of the present invention and rear curved part 61 respectively only have one, and the crooked radian of front curve 41 is less than the crooked radian of rear curved part 61, be convenient to like this form gap 8 between front curve 41 and rear curved part 61.
The foregoing is only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; in every case the equivalence that those of ordinary skills do according to disclosed content is modified or is changed, and all should include in the protection domain of recording in claims.
Claims (4)
1. one kind extends the barrier film double-deck diaphragm apparatus of metering pump of fatigue life, comprise septum body (2), it is characterized in that: described septum body (2) comprises front membrane body (4) and rear membrane body (6), on described front membrane body (4), there is a front curve (41), curved part (61) after thering is one on described rear membrane body (6), described front curve (41) and described rear curved part (61) be corresponding arrange and between be formed with gap (8).
2. diaphragm apparatus according to claim 1, is characterized in that: described front curve (41) is circular arc curved part.
3. diaphragm apparatus according to claim 1, is characterized in that: described rear curved part (61) is circular arc curved part.
4. according to the diaphragm apparatus described in claim 2 or 3, it is characterized in that: the crooked radian of described front curve (41) is less than the crooked radian of described rear curved part (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737648.2A CN103671042A (en) | 2013-12-27 | 2013-12-27 | Double-layer membrane device capable of prolonging fatigue life of membrane for metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737648.2A CN103671042A (en) | 2013-12-27 | 2013-12-27 | Double-layer membrane device capable of prolonging fatigue life of membrane for metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103671042A true CN103671042A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310737648.2A Pending CN103671042A (en) | 2013-12-27 | 2013-12-27 | Double-layer membrane device capable of prolonging fatigue life of membrane for metering pump |
Country Status (1)
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| CN (1) | CN103671042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194347A (en) * | 2018-03-13 | 2018-06-22 | 安徽乐昌气动流体设备科技有限公司 | A kind of pneumatic diaphragm pump diaphragm |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2116456A1 (en) * | 1971-04-03 | 1972-10-12 | Pumpenfabrik Urach, 7417 Urach | Diaphragm pump for conveying liquid or gaseous media |
| US5002471A (en) * | 1987-07-20 | 1991-03-26 | D.F. Laboratories Ltd. | Disposable cell and diaphragm pump for use of same |
| US5188515A (en) * | 1990-06-08 | 1993-02-23 | Lewa Herbert Ott Gmbh & Co. | Diaphragm for an hydraulically driven diaphragm pump |
| CN2901445Y (en) * | 2006-05-22 | 2007-05-16 | 重庆水泵厂有限责任公司 | Sac type warning disphragm and reciprocating meter pump with said diaphragm |
| CN101644249A (en) * | 2009-08-18 | 2010-02-10 | 杭州大潮石化设备有限公司 | Hydraulic diaphragm-type reciprocating pump with function of diaphragm breakage alarm |
| CN203670162U (en) * | 2013-12-27 | 2014-06-25 | 胜瑞兰工业设备（苏州）有限公司 | Double-layer diaphragm device capable of prolonging diaphragm fatigue life for metering pump |
-
2013
- 2013-12-27 CN CN201310737648.2A patent/CN103671042A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2116456A1 (en) * | 1971-04-03 | 1972-10-12 | Pumpenfabrik Urach, 7417 Urach | Diaphragm pump for conveying liquid or gaseous media |
| US5002471A (en) * | 1987-07-20 | 1991-03-26 | D.F. Laboratories Ltd. | Disposable cell and diaphragm pump for use of same |
| US5188515A (en) * | 1990-06-08 | 1993-02-23 | Lewa Herbert Ott Gmbh & Co. | Diaphragm for an hydraulically driven diaphragm pump |
| CN2901445Y (en) * | 2006-05-22 | 2007-05-16 | 重庆水泵厂有限责任公司 | Sac type warning disphragm and reciprocating meter pump with said diaphragm |
| CN101644249A (en) * | 2009-08-18 | 2010-02-10 | 杭州大潮石化设备有限公司 | Hydraulic diaphragm-type reciprocating pump with function of diaphragm breakage alarm |
| CN203670162U (en) * | 2013-12-27 | 2014-06-25 | 胜瑞兰工业设备（苏州）有限公司 | Double-layer diaphragm device capable of prolonging diaphragm fatigue life for metering pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194347A (en) * | 2018-03-13 | 2018-06-22 | 安徽乐昌气动流体设备科技有限公司 | A kind of pneumatic diaphragm pump diaphragm |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |