CN101270823A - Pressure-holding type pressure balance blow-down valve - Google Patents
Pressure-holding type pressure balance blow-down valve Download PDFInfo
- Publication number
- CN101270823A CN101270823A CNA200810011476XA CN200810011476A CN101270823A CN 101270823 A CN101270823 A CN 101270823A CN A200810011476X A CNA200810011476X A CN A200810011476XA CN 200810011476 A CN200810011476 A CN 200810011476A CN 101270823 A CN101270823 A CN 101270823A
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- China
- Prior art keywords
- valve
- pressure
- diaphragm
- filter
- pressure difference
- 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
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- 230000008676 import Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
A pressure-sustaining pressure-balancing blowoff valve belongs to the technical field of design and manufacture of laminated filters. Consists of a guide valve, a valve body, a valve cover, a diaphragm and a throttle orifice plate. The upper and lower surfaces of the valve body are respectively provided with an upper valve cover and a lower valve cover. A pilot valve is arranged on the upper valve cover. An upper valve seat and a lower valve seat are respectively arranged in the valve body. An upper diaphragm and a lower diaphragm are respectively arranged between the upper valve seat and the lower valve seat and between the upper valve cover and the lower valve cover. The inlet of the valve is provided with a throttle orifice plate. The pressure-maintaining pressure-balancing blow-down valve is installed on the blow-down pipeline of the laminated filter. The sewage discharge pressure difference between the filter and the atmosphere is divided into two parts, namely the pressure difference between the filter and the sewage discharge pipe and the pressure difference between the sewage discharge pipe and the atmosphere, so that the purpose of reducing the pressure difference between two ends of a reversing execution membrane of a filtering unit of the laminated filter is achieved. The pressure range of the laminated filter is improved.
Description
Technical field
The invention belongs to the design and the manufacturing technology field of laminated filter.
Background technique
The reversing control valve of existing stacked automatic cleaning strainer mostly is to adopt membrane valve, all be to make diaphragm move the switching of control valve pressurising or pressure release in the film chamber of valve, so diaphragm bear the working pressure that pressure has determined filter, so filter can't use when the flowing medium of high pressure line transportation filters, therefore saying that to have the pressure range that laminated filter uses in actual applications now limited, is not very desirable.
Summary of the invention
The purpose of this invention is to provide a kind of under the high pressure Environmental Conditions, it is that the drain pipe terminal is changed into and held certain pressure that throttling, dividing potential drop by this valve makes the commutation of laminated filter filter element carry out diaphragm no pressure one end in the past, cause commutation to carry out the diaphragm two ends and can keep the constant compression force difference, thereby make the working pressure scope of laminated filter obtain to improve.
Structure of the present invention is as shown in drawings: be made of pilot valve, valve body, valve gap, diaphragm, restricting orifice, a pressure source pressure tappings is arranged on pilot valve.Above and below at valve body has bonnet and bottom flange respectively.One pressurising, pressure relief opening are respectively arranged on upper and lower valve gap.Upper valve base and lower valve base are arranged respectively in valve body.Diaphragm and lower diaphragm plate sheet on one arranged respectively between upper and lower valve seat and the upper and lower valve gap.In the upper and lower film chamber that between upper and lower diaphragm and valve gap, forms a secondary spring is arranged respectively.Method of work of the present invention is: pressure-holding type pressure balancing sewer valve is installed on the blowoff line of filter, the pressure of getting filter self with the pressure source pressure tappings links to each other with the upper and lower film chamber of pressure-holding type pressure balancing sewer valve by hydraulic pipe line through pilot valve, regulate the pressure in pilot valve turn-knob control input film chamber and set the required pressure value of holding pressure of drain pipe, the pressure difference of the pressure of filter self and pressure that drain pipe is held be can bear in the pressure range at the commutation execution diaphragm of filter.When the laminated filter proper functioning is filtered, upper and lower diaphragm after pilot valve is regulated pressure and the effect of secondary spring power under hold out against lower valve base valve port closed, make under the pilot valve regulating action again that pressure maintains in the setting value in the drain pipe; In that laminated filter is anti-when cleaning blowdown, the blowdown diaphragm of anti-cleaning and filtering unit is opened back pressure-holding type pressure balancing sewer valve also pressure release thereupon of upper and lower film chamber, upper and lower diaphragm is lifted off a seat, blowdown valve is opened, and anti-cleansing medium enters drain pipe and the impurity that carries discharged by blowdown valve through restricting orifice.This moment is because the numerical value of pressure effect when making pressure in the drain pipe still keep the laminated filter proper functioning to filter is held in the restricting orifice throttling, still makes the commutation of filter carry out the diaphragm two ends and keeps the constant compression force difference.The diaphragm of the diaphragm type blowdown valve under the design unit of the making bore of two diaphragms dwindles, and the pressure rating of use increases.
Description of drawings
Fig. 1 is a schematic representation of the present invention
1-laminated filter 2-pressure-holding type pressure balancing sewer valve 14-drain pipe
Fig. 2 is a section of structure of the present invention
3-bonnet 4-bottom flange 5-pressurising, pressure relief opening 6-upper valve base 7-lower valve base 8-go up diaphragm 9-lower diaphragm plate sheet 10-film chamber 11-secondary spring 12-restricting orifice 13-pilot valve
Embodiment
Structure of the present invention is as shown in drawings: be made of pilot valve, valve body, valve gap, diaphragm and restricting orifice.In the above and below of valve body bonnet 3 and bottom flange 4 are arranged respectively, a pilot valve 13 is installed on bonnet 3, one pressurising, pressure relief opening 5 are all arranged in upper and lower valve gap upper end.Upper valve base 6 and lower valve base 7 are arranged respectively in valve body.Diaphragm 8 and lower diaphragm plate sheet 9 on one arranged respectively between upper and lower valve seat and the upper and lower valve gap.Respectively there is a secondary spring 11 in the film chamber 10 that forms between diaphragm and valve gap in the film chamber.Import at valve is equipped with restricting orifice 12.
Claims (1)
- Pressure-holding type pressure balancing sewer valve, it is characterized in that: bonnet 3 and bottom flange 4 are arranged respectively in the above and below of valve body, one pilot valve 13 is installed on bonnet 3, in upper and lower valve gap upper end one pressurising, pressure relief opening 5 are arranged all, upper valve base 6 and lower valve base 7 are arranged respectively in valve body, diaphragm 8 and lower diaphragm plate sheet 9 on one are arranged, the film chamber 10 that between diaphragm and valve gap, forms between upper and lower valve seat and the upper and lower valve gap respectively, one secondary spring 11 is respectively arranged in the film chamber, be equipped with restricting orifice 12 in the import of valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810011476XA CN101270823A (en) | 2008-05-20 | 2008-05-20 | Pressure-holding type pressure balance blow-down valve |
| CNA2009102035470A CN101584952A (en) | 2008-05-20 | 2009-05-20 | Filter with a throttling and pressuring hold apparatus on a blow off pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810011476XA CN101270823A (en) | 2008-05-20 | 2008-05-20 | Pressure-holding type pressure balance blow-down valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101270823A true CN101270823A (en) | 2008-09-24 |
Family
ID=40004969
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810011476XA Pending CN101270823A (en) | 2008-05-20 | 2008-05-20 | Pressure-holding type pressure balance blow-down valve |
| CNA2009102035470A Pending CN101584952A (en) | 2008-05-20 | 2009-05-20 | Filter with a throttling and pressuring hold apparatus on a blow off pipeline |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009102035470A Pending CN101584952A (en) | 2008-05-20 | 2009-05-20 | Filter with a throttling and pressuring hold apparatus on a blow off pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101270823A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019035060A1 (en) | 2017-08-18 | 2019-02-21 | Cummins Filtration Ip, Inc. | Fuel filter cartridge with keyed profile |
-
2008
- 2008-05-20 CN CNA200810011476XA patent/CN101270823A/en active Pending
-
2009
- 2009-05-20 CN CNA2009102035470A patent/CN101584952A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN101584952A (en) | 2009-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |