CN105736327A - Novel oil cavity diaphragm for fuel diaphragm pump - Google Patents
Novel oil cavity diaphragm for fuel diaphragm pump Download PDFInfo
- Publication number
- CN105736327A CN105736327A CN201410752968.XA CN201410752968A CN105736327A CN 105736327 A CN105736327 A CN 105736327A CN 201410752968 A CN201410752968 A CN 201410752968A CN 105736327 A CN105736327 A CN 105736327A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- oil pocket
- oil cavity
- chamfering
- outer edge
- 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.)
- Pending
Links
Abstract
The invention provides a novel oil cavity diaphragm for a fuel diaphragm pump. The oil cavity diaphragm is round and comprises an outer edge part (1) and a central part (3). A transition part (2), transitional towards the central part (3), of the outer edge part (1) firstly protrudes upwards and then is concaved downwards, so that a lower bevel (201) and an upper bevel (202) are formed. The oil cavity diaphragm is manufactured through the design scheme that cyaniding nitrile rubber and fabric are combined and the lower bevel and the upper bevel are enlarged, so that the oil cavity diaphragm still has good elasticity and stability in a low-temperature environment, namely the effect that the oil cavity diaphragm still has large deformation in the low-temperature environment of minus 40 DEG C is guaranteed; and the performance requirement of the fuel diaphragm pump in the low-temperature operating environment of minus 40 DEG C and the requirement for keeping a low-temperature ground tolerance test for at least three hours at the temperature of minus 55 DEG C are met.
Description
Technical field
The invention belongs to mechanical field, be mainly used in hydraulic system, particularly to a kind of novel oil pocket diaphragm for fuel oil diaphragm pump.
Background technology
Current diaphragm is generally adopted nitrile rubber or fluorosioloxane rubber and combines with fabric and make, and nitrile rubber and fluorosioloxane rubber are all without more excellent elasticity, lower temperature resistance and stability；For ease of processing in structure, generally all less by corner's chamfer design, thus can reduce diaphragm deformability in low-temperature working.If product needed remains to normal operation under the environment of relatively low temperature, the material adopted at present and structure just cannot meet and require that.
Summary of the invention
It is an object of the invention to: in order to make oil pocket diaphragm have good elasticity and stability under relatively cold environmental conditions, namely ensure that oil pocket diaphragm remains to bigger deformation under-40 DEG C of low temperature environments, make fuel oil diaphragm pump normal operation.
Technical solution of the present invention provides a kind of novel oil pocket diaphragm for fuel oil diaphragm pump, described oil pocket diaphragm is circular (see Fig. 2), including outer edge 1 and central part 3, described outer edge 1 first raise up to the transition part 2 of described central part 3 transition after concave downward, form lower chamfering 201 and upper chamfering 202.
Preferably, the arc radius of described lower chamfering 201 and upper chamfering 202 is than for 9.5:5.
Preferably, described oil pocket diaphragm internal employing fabric is the heart, outside covering cyaniding nitrile rubber.
Preferably, the protruding apex that described lower chamfering 201 is formed is 3.9mm to the projector distance of described oil pocket diaphragm bottom surface, the smooth position of described outer edge 1 is 3.6mm to the projector distance of described oil pocket diaphragm bottom surface, the arc radius of described lower chamfering 201 is 9.5mm, and the arc radius of described upper chamfering 202 is 5mm.
This oil pocket diaphragm adopts cyaniding nitrile rubber to combine with fabric and increases the design of lower chamfering and upper chamfering and makes, oil pocket diaphragm is made still to have good elasticity and stability under relatively low temperature environment, namely ensure that oil pocket diaphragm still has bigger deformation under-40 DEG C of low temperature environments, meets fuel oil diaphragm pump performance requirement under-40 DEG C of low-temperature working environment and keeps the low-temperature ground tolerance test requirement of at least 3h at-55 DEG C.
Accompanying drawing explanation
Below accompanying drawing of the present invention is illustrated:
Fig. 1 is material provided by the invention and structure improvement pre-structure schematic diagram；
Fig. 2 is structural representation after material provided by the invention and structure improvement；
Fig. 3 is based on embodiment when oil pocket diaphragm provided by the invention is applied to certain fuel oil diaphragm pump；
Fig. 4 is the tomograph after material provided by the invention and structure improvement.
Wherein 1-outer edge；2-transition part；Chamfering under 201-；The upper chamfering of 202-；3-central part；4-diaphragm axle；5-oil pocket diaphragm (present invention)；6-inlet valve；7-delivery valve.
Detailed description of the invention
The embodiment of the present invention provides a kind of novel oil pocket diaphragm for fuel oil diaphragm pump, as shown in Figure 4, when diaphragm axle 4 drives oil pocket diaphragm 5 (present invention) to move upward, under fixed journey system, oil pocket diaphragm 5 is pulled upwardly liter deformation quantity that generation is certain so that oil pocket volume increases, and pressure reduces, now inlet valve 6 is opened, and fuel oil enters oil pocket；When diaphragm axle 4 drives oil pocket diaphragm 5 (present invention) to move downward, oil pocket diaphragm 5 (present invention) is compressed downwardly so that oil pocket volume reduces, and pressure raises, and now delivery valve 7 is opened, and fuel oil is forced out oil pocket, is transported to adjustment device.Illustrate according to this, want the flow reaching fuel oil diaphragm pump requirement, oil pocket diaphragm 5 (present invention) must have good elasticity, but it is under the low-temperature working environment of-40 DEG C, the aeroelastic requirements of oil pocket diaphragm 5 (present invention) is higher, so to ensure the low-temperature working performance of fuel oil diaphragm pump, it is necessary to assure the low temperature elasticity performance of oil pocket diaphragm 5 (present invention).
We ensure oil pocket diaphragm 5 (present invention) low temperature elasticity performance from material and structural design.
The present invention adopts cyaniding NBR to combine with fabric and makes, and hydrogenated nitrile-butadiene rubber is high saturated rubber, is made up of itrile group, methene chain and a small amount of c=c double bond.Saturated methene chain gives the excellent caoutchouc elasticity of hydropolymer, thermostability, resistance to ag(e)ing and circumnutating property of low temperature；And itrile group gives oil resistivity；Most of double bonds hydrogenate so that it is strand is more soft suitable, has more excellent resistance to low temperature and circumnutating property of low temperature than nitrile rubber and fluorosioloxane rubber；The existence of a small amount of c=c double bond so that it is available sulfur cross-linking.Hydrogenated nitrile-butadiene rubber, although still containing a small amount of double bond, but its stability is higher than nitrile rubber and fluorosioloxane rubber 1000 times, hydrogenation degree is more than 80%, and heat aging property significantly improves, and compression set significantly diminishes, ozone resistance improves.Hydrogenated nitrile-butadiene rubber, fluorosioloxane rubber and fabric make diaphragm specific performance index in Table 1.
Table 1 oil pocket diaphragm performance indications
As shown in table 1, hydrogenated nitrile-butadiene rubber relatively fluorosioloxane rubber has good low temperature elasticity, when-40 DEG C of reinforcings are not more than 29.4N, mention stroke mm >=1.5, embody good deformability, ensure that diaphragm remains to normal operation under cryogenic, so we adopt cyaniding NBR to combine with fabric makes oil pocket diaphragm.
Under the present invention, chamfering 201 and upper chamfering 202 are increased to R9.5, R5 (seeing Fig. 1, Fig. 2 respectively) by original R6.5, R2 respectively, after increase, transition part 2 forms the projection of upwards 0.3mm, enhances the low temperature deformation ability of oil pocket diaphragm 5 (present invention).The smooth position of outer edge 1 is reduced to 3.6mm to the projector distance of oil pocket diaphragm 5 (present invention) bottom surface by 6mm, make whole oil pocket diaphragm (present invention) structure seamlessly transit, enhance the oil pressure sensitivity of oil pocket diaphragm (present invention).
Based on described above, the present invention relatively prior art has a clear superiority in, and can meet the properties requirement under relatively low temperature working environment of oil pocket diaphragm the filled fuel oil diaphragm pump completely.
Claims (4)
1. the novel oil pocket diaphragm for fuel oil diaphragm pump, described oil pocket diaphragm is circular, including outer edge (1) and central part (3), it is characterized in that, described outer edge (1) first raise up to the transition part (2) of described central part (3) transition after concave downward, form lower chamfering (201) and upper chamfering (202).
2. oil pocket diaphragm according to claim 1, it is characterised in that the arc radius of described lower chamfering (201) and upper chamfering (202) is than for 9.5:5.
3. oil pocket diaphragm according to claim 1, it is characterised in that described oil pocket diaphragm internal employing fabric is the heart, outside covering cyaniding nitrile rubber.
4. the oil pocket diaphragm according to Claim 1-3 any one, it is characterized in that, the protruding apex that described lower chamfering (201) is formed is 3.9mm to the projector distance of described oil pocket diaphragm bottom surface, the smooth position of described outer edge (1) is 3.6mm to the projector distance of described oil pocket diaphragm bottom surface, the arc radius of described lower chamfering (201) is 9.5mm, and the arc radius of described upper chamfering (202) is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752968.XA CN105736327A (en) | 2014-12-10 | 2014-12-10 | Novel oil cavity diaphragm for fuel diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752968.XA CN105736327A (en) | 2014-12-10 | 2014-12-10 | Novel oil cavity diaphragm for fuel diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736327A true CN105736327A (en) | 2016-07-06 |
Family
ID=56238638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410752968.XA Pending CN105736327A (en) | 2014-12-10 | 2014-12-10 | Novel oil cavity diaphragm for fuel diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105736327A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6340294B1 (en) * | 1999-10-27 | 2002-01-22 | Mikuni Adec Corporation | Diaphragm type fuel pump |
| JP4185223B2 (en) * | 1999-10-12 | 2008-11-26 | 信越化学工業株式会社 | Diaphragm pump for transferring silica powder and optical fiber preform manufacturing method using the same |
| CN201358906Y (en) * | 2009-02-23 | 2009-12-09 | 李建玮 | Diaphragm sheet of pneumatic diaphragm pump |
| FR2927131B1 (en) * | 2008-02-01 | 2012-09-14 | Valeo Systemes Thermiques | MEMBRANE PUMP |
| CN102758771A (en) * | 2012-04-08 | 2012-10-31 | 杭州大潮石化设备有限公司 | Multi-curved surface diaphragm protective plate |
| CN103711683A (en) * | 2014-01-17 | 2014-04-09 | 沈阳工程学院 | Diaphragm sheet for supercritical diaphragm pump |
-
2014
- 2014-12-10 CN CN201410752968.XA patent/CN105736327A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4185223B2 (en) * | 1999-10-12 | 2008-11-26 | 信越化学工業株式会社 | Diaphragm pump for transferring silica powder and optical fiber preform manufacturing method using the same |
| US6340294B1 (en) * | 1999-10-27 | 2002-01-22 | Mikuni Adec Corporation | Diaphragm type fuel pump |
| FR2927131B1 (en) * | 2008-02-01 | 2012-09-14 | Valeo Systemes Thermiques | MEMBRANE PUMP |
| CN201358906Y (en) * | 2009-02-23 | 2009-12-09 | 李建玮 | Diaphragm sheet of pneumatic diaphragm pump |
| CN102758771A (en) * | 2012-04-08 | 2012-10-31 | 杭州大潮石化设备有限公司 | Multi-curved surface diaphragm protective plate |
| CN103711683A (en) * | 2014-01-17 | 2014-04-09 | 沈阳工程学院 | Diaphragm sheet for supercritical diaphragm pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204176017U (en) | Dress formula inclined-plane ultralow temperature Float ball valve in one | |
| CN201209542Y (en) | Plunger piston | |
| CN105736327A (en) | Novel oil cavity diaphragm for fuel diaphragm pump | |
| CN205638900U (en) | Novel spring ball valve | |
| CN201794908U (en) | Automobile ball joint | |
| CN208579024U (en) | A kind of packing seal structure of spandex production | |
| CN201764061U (en) | Metal hard sealing structure of two-sheet ball valve | |
| CN203214460U (en) | Pulsation damper | |
| CN208348593U (en) | The check valve of electric reciprocating pump | |
| CN205534207U (en) | Special fluorine dragon gasket | |
| CN202629296U (en) | Floating-ball type water level automatic valve | |
| CN205078871U (en) | High pressure resistant anticorrosive fast valve | |
| CN201076605Y (en) | Thermoplastic sealing rubber plug | |
| CN103485994B (en) | Hydraulic air-free pump | |
| CN205607229U (en) | Sealing device of radiator hydroecium and mainboard | |
| CN204062053U (en) | A kind of high flow capacity fuel transfer pump Decompression valves | |
| CN202851950U (en) | Marine grain space rubber sealing strip | |
| CN204127378U (en) | Floating valve seat | |
| CN203656002U (en) | Air spring for human body rehabilitation seat | |
| CN203802834U (en) | Reverse flow prevented vomit bag | |
| CN103363146B (en) | The valve base sealing structure of ball valve | |
| CN204140542U (en) | A kind of novel piston | |
| CN203363151U (en) | O-shaped seal ring used for waterway sealing | |
| CN102996843A (en) | Soft sealing structure of spherical valve | |
| CN202882836U (en) | Long-term-efficient wear-resisting energy-saving packing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
|
| WD01 | Invention patent application deemed withdrawn after publication |