CN201206542Y - Annular U-shaped barrier diaphragm for hydraulic diaphragm pump - Google Patents
Annular U-shaped barrier diaphragm for hydraulic diaphragm pump Download PDFInfo
- Publication number
- CN201206542Y CN201206542Y CNU2008200864032U CN200820086403U CN201206542Y CN 201206542 Y CN201206542 Y CN 201206542Y CN U2008200864032 U CNU2008200864032 U CN U2008200864032U CN 200820086403 U CN200820086403 U CN 200820086403U CN 201206542 Y CN201206542 Y CN 201206542Y
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- diaphragm
- annular
- membrane
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- pump
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Abstract
The utility model relates to an annular U-shaped membrane for a hydraulic membrane pump. The side wall of the annular U-shaped membrane encloses a hollow structure. The middle part of the annular side wall is recessed, both ends thereof expand outwards to be a horn shape, the outer edge solution of the horn mouth at one end is hermetically disposed on the membrane cavity wall of the hydraulic membrane pump, and the outer edge of the horn mouth at the other end is spaced from the membrane cavity wall. A membrane plate hermetically matched with the outer edge solution is disposed on the horn mouth at the other end, and matched with the annular U-shaped membrane to divide the membrane cavity of the hydraulic membrane pump into an oil cavity locating on the annular side wall and in the membrane plate and a medium cavity locating on the annular side wall and outside the membrane plate. The annular U-shaped membrane has the advantages of long service life, reduced radial dimension, low material consumption and convenient repair and maintenance.
Description
Technical field
The present invention relates to a kind of hydraulic diaphragm pump barrier film.
Background technique
Hydraulic diaphragm pump because have pressure height, efficient height, save the energy, do not have reveal, zero pollution, long lifetime, characteristics such as highly reliable, be widely used in the quantitative conveying of the media such as various inflammable, explosive, toxicity, corrosivity or non-aggressive of industries such as oil, chemical industry, food, medicine, electric power, water treatment.Hydraulic diaphragm pump adopts diaphragm of rubber that fed sheet of a media and driven medium (oils) are separated, and the to-and-fro motion of piston in diaphragm of rubber, makes the diaphragm of rubber deformation of unevenness by oily medium transfer function, finishes the suction and the discharge of slip.This pump not only makes fed sheet of a media not have and leaks. the more important thing is that the granule medium that makes conveying does not contact with the piston motion parts of pump, has exempted the heavy wear that solid particle causes pump, thereby the stability of pump and reliability are increased substantially.At present, diaphragm of rubber shape commonly used is circular dull and stereotyped barrier film, Fig. 1 is the assembling schematic representation of traditional circular dull and stereotyped barrier film, wherein, 6-plunger, 7-circular dull and stereotyped barrier film, in actual use, circular dull and stereotyped barrier film outer circumferential edge is fixed, deflection deformation before and after the barrier film inboard, deflection deformation size in front and back is relevant with the distortional stress size, deflection deformation is excessive, and the stress that barrier film produced is also bigger, and the stress of circular dull and stereotyped barrier film reaches maximum value at diaphragm edge and circular middle part, therefore the stress of barrier film is easy to generate and concentrates the significantly change that also is easy to generate stress, thereby makes that the life-span of barrier film is shorter.In addition, the excessive consumptive material that causes of circular dull and stereotyped barrier film radial dimension is many, no mounting groove position on the circular dull and stereotyped barrier film, installation and maintenance inconvenience.
Summary of the invention
In order to solve existing hydraulic diaphragm pump with the problems referred to above that circular dull and stereotyped barrier film exists, the invention provides a kind of long service life, radial dimension reduces, consumptive material is few, convenient for installation and maintenance annular U type diaphragm for hydraulic diaphragm pump.
A kind of annular U type diaphragm for hydraulic diaphragm pump, the side wall ring coiled of described annular U type diaphragm is a hollow structure, the middle part indent of annular sidewall, two ends expand outwardly into horn-like, be installed on the diaphragm cavity wall of hydraulic diaphragm pump the bell-mouthed outer rim liquid sealing of one end, the bell-mouthed outer rim of the other end and described diaphragm cavity wall have spacing, the diaphragm plate of liquid sealing cooperation with it is installed on the horn mouth of the described the other end, described diaphragm plate cooperates with described annular U type diaphragm, the diaphragm cavity of hydraulic diaphragm pump is separated into the oil pocket and the media cavity that is positioned at the outside of annular sidewall and diaphragm plate of the inside that is positioned at annular sidewall and diaphragm plate.
Further, the bell-mouthed outer rim at two ends has the barrier film installing ring.
Technical conceive of the present invention is: annular U type diaphragm adopts the middle part indent, the annular U type structure that two ends expand outwardly, when sucking or discharge medium, axial distortion is not only arranged, also has dilatation radially, with the surface of contact of medium also is to alleviate the curved surface that impacts, compare with traditional circular dull and stereotyped barrier film, sucking or discharging under the situation of same media, the deflection deformation of annular U type diaphragm is littler, thereby the traditional circular dull and stereotyped barrier film of deflection deformation volume ratio that annular U type diaphragm can bear wants big; The shape of annular U type diaphragm also makes stress be not easy to concentrate, thereby the operating life of barrier film prolongs.
Beneficial effect of the present invention is: the deflection deformation volume of (1) barrier film is big; (2) stress is not easy to concentrate, and the operating life of barrier film prolongs; (3) the barrier film radial dimension reduces, and consumptive material still less; (4) convenient for installation and maintenance.
Description of drawings
Fig. 1 is the traditional assembling schematic representation of circular dull and stereotyped barrier film in hydraulic diaphragm pump.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a radial cross-section of the present invention.
Fig. 4 is the assembling schematic representation of the present invention in the diaphragm cavity of hydraulic diaphragm pump.
Embodiment
Referring to Fig. 2-4: a kind of annular U type diaphragm for hydraulic diaphragm pump, the side wall ring coiled of described annular U type diaphragm is a hollow structure, the middle part indent of annular sidewall 8, two ends expand outwardly into horn-like, be installed on the diaphragm cavity wall 4 of hydraulic diaphragm pump the outer rim liquid sealing of the horn mouth 2 of one end, the outer rim of the horn mouth 3 of the other end and described diaphragm cavity wall 4 have spacing, the diaphragm plate 1 of liquid sealing cooperation with it is installed on the horn mouth 3 of the described the other end, described diaphragm plate 1 cooperates with described annular U type diaphragm, the diaphragm cavity of hydraulic diaphragm pump is separated into the oil pocket 9 and the media cavity 10 that is positioned at the outside of annular sidewall 8 and diaphragm plate 1 of the inside that is positioned at annular sidewall 8 and diaphragm plate 1.
The bell-mouthed outer rim at two ends has barrier film installing ring 11, and the mounting groove that cooperates with described barrier film installing ring 11 is arranged on described diaphragm cavity wall 4 and the diaphragm plate 1.
Annular U type diaphragm of the present invention adopts the middle part indent, the annular U type structure that two ends expand outwardly, when sucking or discharge medium, axial distortion is not only arranged, also has dilatation radially, with the surface of contact of medium also be the curved surface that can alleviate impact, compare with traditional circular dull and stereotyped barrier film, sucking or discharging under the situation of same media, the deflection deformation of annular U type diaphragm is littler, thereby the traditional circular dull and stereotyped barrier film of deflection deformation volume ratio that annular U type diaphragm can bear wants big; The shape of annular U type diaphragm also makes stress be not easy to concentrate, thereby the operating life of barrier film prolongs.
Fig. 4 is the assembling schematic representation of annular U type diaphragm of the present invention in diaphragm cavity.Its working principle is: when diaphragm pump sucked medium, piston 5 was to left movement, and the hydraulic oil in the oil pocket constantly reduces, and at this moment diaphragm plate 1 is out of shape left thereby drive annular U type diaphragm also to left movement.When diaphragm plate 1 arrived preceding dead center position, piston 5 stopped to left movement, begins to move right, and diaphragm pump begins to discharge medium.After piston began to move right, the hydraulic oil in the oil pocket constantly increased, and diaphragm plate 1 also begins to be moved right by preceding dead point, was out of shape to the right thereby drive annular U type diaphragm.After diaphragm plate 1 was through the centering position, diaphragm plate 1 continued dead point motion backward.When diaphragm plate 1 arrived the dead center position, back, piston 5 stopped to move right, and beginning is to left movement, and diaphragm pump begins to suck medium.Diaphragm plate 1 also begins by the dead point, back to be out of shape left thereby drive annular U type diaphragm to left movement.Make shuttling movement so again and again.
Fig. 1 is the traditional assembling schematic representation of circular dull and stereotyped barrier film in hydraulic diaphragm pump.Its working principle is: when diaphragm pump sucked medium, plunger 6 was to left movement, and the hydraulic oil in the oil pocket constantly reduces, and circular dull and stereotyped barrier film 7 distortion are to left movement.When barrier film arrived preceding dead point, plunger 6 stopped to left movement, began to move right, and diaphragm pump begins to discharge medium.After plunger 6 moved right, the hydraulic oil in the oil pocket constantly increased, and circular dull and stereotyped diaphragm deflection moves right.Circular dull and stereotyped barrier film process centering arrives the dead point, back behind the position, and plunger 6 stops to move right, and beginning is to left movement, and diaphragm pump begins to suck medium.Make shuttling movement so again and again.
As can be seen, annular U type diaphragm has bigger front and back deflection deformation length than circular dull and stereotyped barrier film 7 from the contrast of Fig. 4 and Fig. 1.Therefore will reach identical flow, traditional circular dull and stereotyped barrier film needs bigger area also just to need more material.Comparison diagram 1 and Fig. 3, the radial dimension of annular U type diaphragm significantly dwindles as can be seen.In installation process, because annular U type diaphragm has mounting groove at diaphragm cavity wall 4, therefore easier installation and maintenance.In use, because the stress of classic flat-plate barrier film reaches maximum value at diaphragm edge and circular middle part, so the stress of barrier film is easy to generate and concentrates the significantly change that also is easy to generate stress, thereby makes that the life-span of barrier film is shorter.Annular U type diaphragm, owing to adopted special annular U type structure, make that suffered stress ratio is less on the barrier film, also being difficult for producing stress at barrier film concentrates, thereby improved the working efficiency of diaphragm pump effectively, better controlled the excursion of the suffered stress of barrier film, the operating life that has prolonged barrier film.
Claims (2)
1, annular U type diaphragm for hydraulic diaphragm pump, it is characterized in that: the side wall ring coiled of described annular U type diaphragm is a hollow structure, the middle part indent of annular sidewall, two ends expand outwardly into horn-like, be installed on the diaphragm cavity wall of hydraulic diaphragm pump the bell-mouthed outer rim liquid sealing of one end, the bell-mouthed outer rim of the other end and described diaphragm cavity wall have spacing, the diaphragm plate of liquid sealing cooperation with it is installed on the horn mouth of the described the other end, described diaphragm plate cooperates with described annular U type diaphragm, the diaphragm cavity of hydraulic diaphragm pump is separated into the oil pocket and the media cavity that is positioned at the outside of annular sidewall and diaphragm plate of the inside that is positioned at annular sidewall and diaphragm plate.
2, annular U type diaphragm for hydraulic diaphragm pump as claimed in claim 1 is characterized in that: the bell-mouthed outer rim at two ends has the barrier film installing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200864032U CN201206542Y (en) | 2008-04-22 | 2008-04-22 | Annular U-shaped barrier diaphragm for hydraulic diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200864032U CN201206542Y (en) | 2008-04-22 | 2008-04-22 | Annular U-shaped barrier diaphragm for hydraulic diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206542Y true CN201206542Y (en) | 2009-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200864032U Expired - Lifetime CN201206542Y (en) | 2008-04-22 | 2008-04-22 | Annular U-shaped barrier diaphragm for hydraulic diaphragm pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN201206542Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275553B (en) * | 2008-04-22 | 2010-06-02 | 浙江工业大学 | Annular U type diaphragm for hydraulic diaphragm pump |
-
2008
- 2008-04-22 CN CNU2008200864032U patent/CN201206542Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275553B (en) * | 2008-04-22 | 2010-06-02 | 浙江工业大学 | Annular U type diaphragm for hydraulic diaphragm pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090311 Effective date of abandoning: 20080422 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20090311 Effective date of abandoning: 20080422 |