CN102042431B - Anti-sediment backwashing back pressure valve - Google Patents
Anti-sediment backwashing back pressure valve Download PDFInfo
- Publication number
- CN102042431B CN102042431B CN 201010514761 CN201010514761A CN102042431B CN 102042431 B CN102042431 B CN 102042431B CN 201010514761 CN201010514761 CN 201010514761 CN 201010514761 A CN201010514761 A CN 201010514761A CN 102042431 B CN102042431 B CN 102042431B
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- valve
- valve rod
- piston
- back pressure
- backwashing
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Abstract
The invention discloses an anti-sediment backwashing back pressure valve. The valve comprises an upper valve body, a lower valve body, pressure adjusting equipment, sealing equipment, a piston, a valve rod, a sealing seat and an adapter, and is characterized in that: a valve rod guide sleeve with a filter core is arranged below a piston cylinder cavity consisting of the upper valve body, the lower valve body and the piston; the upper end of the valve rod guide sleeve is provided with a ventilation through hole; the lower part of the inner bore of the valve rod guide sleeve is provided with a sweeping ring; the valve rod has a gas-pin-shaped structure; a vertical hole with a proper length is drilled on the end face of the valve rod; a transverse hole which is communicated with the vertical hole is drilled on the side face of the valve rod; and the upper part of the piston cylinder cavity is provided with a backwashing passage. Since the anti-sediment backwashing back pressure valve has backwashing functions, complex work of manually disassembling and cleaning the back pressure valve can be saved, the probability of damaging the back pressure valve is eliminated, and the working efficiency of the back pressure valve is improved.
Description
Technical field
The back pressure valve of structure of the present invention, relate to be can autocontrol valve in the valve products before the valve of pressure.
Technical background
At present, in very many occasions, such as petrochemical industry, chemical reaction, the supercritical, high pressure sewage treatment, automation control etc. all need to could realize under a certain specified pressure.Thereby in this flowage structure, the valve of an energy auto-control forefront pressure must be set endways.Here it is back pressure valve.Its working principle is: by the voltage adjusting device that turns clockwise, adjusting nut is moved downward, the compression pressure adjusting spring, make spring produce the pressure that certain thrust is namely set, this power that pressure adjusting spring produces passes to piston, force the piston driving valve rod to move downward, the throttle down with the sealing seat close contact.Entered in the piston cylinder chamber by entrance when needs obtain pressure controlled flowing medium, and piston is produced a pressure, piston is moved upward.When hydrodynamic pressure surpasses pressure adjusting spring and executes pressure on piston, be about to piston and move upward and drive valve rod and leave sealing seat, be and opened valve, flowing medium is just discharged by valve.Until hydrodynamic pressure slightly is lower than setting pressure, valve will autoshutdown.
Existing back pressure valve has the requirement of a common prerequisite working condition, and namely all flowing mediums by back pressure valve all must be very clean, and requires to install additional before the back pressure valve entrance filter of a precision below 10 microns.Yet, in the overcritical ultrahigh pressure sewage disposal process of new type high temperature, in the flow process of overcritical superhigh-pressure high-temp chemosynthesis and some equipment of petrochemical industry medium, all will inevitably produce the liquid that contains sand grain 30～50% and will pass through this back pressure valve.So the structure of existing back pressure valve just can't satisfy the requirement of aforesaid this bad working environments at all.Its reason is: the liquid that this high concentration contains sand grain all can cause heavy wear rapidly and form piston in cylinder wall and piston and Sealing and leak outside thereby uncontrollable upstream pressure.It two contains also very easily stuck piston and make the uncontrollable upstream pressure of back pressure valve of sand grain, and this is a great problem of relevant enterprise.
Summary of the invention
The purpose of this invention is to provide that a kind of energy satisfies that the flowing medium contain sand grain passes through back pressure valve.
The objective of the invention is to be realized by following technological scheme.
A kind of anti-sediment backwashing back pressure valve comprises: upper valve body 5, lower valve body 1, voltage adjusting device, water-tight equipment, piston, valve rod 2, sealing seat 24, crossover sub 28.The cavity that is comprised of upper valve body 5, lower valve body 1, valve piston 6 is the piston cylinder chamber, below the piston cylinder chamber, has established the valve rod guide pin bushing 4 with filter core 13, is provided with exhaust hole in valve rod guide pin bushing 4 upper ends, is provided with row in valve rod guide pin bushing 4 endoporus bottoms and sweeps ring 3.Valve rod 2 is the structure of air tube shape, namely is drilled with the vertical core of suitable length from the valve rod end face, from the cross-drilled hole of valve rod side face drilling and hard hole UNICOM.Established backwash passage 30 on top, piston cylinder chamber.Piston is provided with piston stopper 31, is provided with the first seal ring 11 between piston stopper 31 and the valve rod 2.
The present invention is below the piston cylinder chamber; set up the valve rod guide pin bushing 4 with a plurality of high-precision filter elements 13; its high-precision filter core 13 can stop that the silt more than 99.9% enters in the piston cylinder; thereby can effectively protect piston 6, piston cylinder inwall and the first seal ring 11; prevent their wearing and tearing, more can not produce the fault that piston is stuck.
The present invention has changed the profile of valve rod 2, is the cylinder conical nose in the past, changes into now similarly inflating the air tube structure of usefulness to ball, and derive from the valve rod flank hole in the hole of namely boring suitable length from the valve rod end face.The convenient needs that adapt to new structure.
The present invention is provided with row and sweeps ring 3 in valve rod guide pin bushing 4 endoporus bottoms, can effectively remove the silt that is adsorbed on the valve rod.Be designed with exhaust hole in valve rod guide pin bushing 4 upper ends, can eliminate valve rod 2 suffers gas moving up and down resistance, it is free and relaxed that it is moved up and down.
Sealing seat 24 of the present invention adopts high strength, high abrasion, high anti-oxidation, corrosion resistant quality material to make, and it is longer that compare other materials working life.
The cavity that the present invention is comprised of upper valve body 5, lower valve body 1, piston 6 in the piston cylinder chamber.The backwash passage has been set up on top, piston cylinder chamber.Because silt is all adsorbed inevitably in its duty cycle in any fluid passage.If do not remove for a long time, will inevitably stop up filter core 13 and valve port.Light then reduce the usability of valve, serious then cause valve badly damaged, lost efficacy, even may cause unpredictable facility and personnel's accident.Therefore, the user must regularly or irregularly carry out cleaning to the back pressure valve that contains the use of silt flow body medium according to actual use condition.The backwash passage person of being easy to use who sets up utilizes modern electric-control method that this anti-silt backwash back pressure valve is carried out regularly or irregularly automatically cleaning.
Being with existing back pressure valve difference of the anti-sediment backwashing back pressure valve of the present invention: flowing medium at first enters buffer cavity, then just enters the piston cylinder chamber through behind the filter element filtering again, piston is done pushing the work forward.The anti-sediment backwashing back pressure valve of the present invention can save the miscellaneous work of manually unpicking and washing back pressure valve and the chance of having exempted the damage of back pressure valve because backwashing function has been arranged, and improves the working efficiency of back pressure valve.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Embodiment
A kind of anti-sediment backwashing back pressure valve comprises: upper valve body 5, lower valve body 1, voltage adjusting device, water-tight equipment, piston 6, valve rod 2, sealing seat 24, crossover sub 28 and flange plate 29.The cavity that is comprised of upper valve body 5, lower valve body 1, valve rod guide pin bushing 4, piston 6, piston guide bush 32 is the piston cylinder chamber, below the piston cylinder chamber, if with the valve rod guide pin bushing 4 of high-precision filter element 13, be provided with exhaust hole in valve rod guide pin bushing 4 upper ends, be provided with row in valve rod guide pin bushing 4 endoporus bottoms and sweep ring 3.Valve rod 2 is the structure of air tube shape, namely is drilled with the vertical core of suitable length from the valve rod end face, from the cross-drilled hole of valve rod side face drilling and hard hole UNICOM.Established backwash passage 30 on top, piston cylinder chamber.Piston 6 is provided with piston stopper 31, is provided with the first seal ring 11 between piston stopper 31 and the valve rod 2.Voltage adjusting device comprises adjusting pressuring handle 21 and trim 26, have pressure-regulating sleeve 10, pressure adjusting spring 16, spring pad 9 and voltage regulation screw 17 and adjusting nut 25 at adjusting pressuring handle 21, voltage regulation screw 17 is connected with adjusting pressuring handle 21 by bearing 19 and bearing support 18, also is provided with stop screw 20 on the voltage regulation screw 17.Voltage adjusting device is fixed on the upper valve body 5 by the back of the body female 22 is installed.
Be provided with packing ring 7 and fastening screw 8 between piston 6 and the upper valve body 5.Be provided with the second seal ring 12 between top, piston cylinder chamber and the adjusting pressuring handle 21, be provided with the 3rd seal ring 14 between valve rod and the valve rod guide pin bushing, be provided with the 4th seal ring 15 between piston cylinder chamber and the valve rod guide pin bushing 4.Lower valve body 1 is provided with sealing seat 24, sealed socket sleeve 25, and sealing seat 24 bottoms are provided with capping 12 and the 5th seal ring 27.
Claims (3)
1. anti-sediment backwashing back pressure valve, comprise: upper valve body, lower valve body, voltage adjusting device, water-tight equipment, piston, valve rod, sealing seat, crossover sub is characterized in that: below the piston cylinder chamber that is comprised of upper valve body, lower valve body, piston, established the valve rod guide pin bushing with filter core, be provided with exhaust hole in valve rod guide pin bushing upper end, be provided with row in valve rod guide pin bushing endoporus bottom and sweep ring, valve rod is the structure of air tube shape, is drilled with the vertical core of suitable length from the valve rod end face, be drilled with the cross-drilled hole with described vertical core UNICOM from the valve rod side, be provided with the backwash passage on top, piston cylinder chamber.
2. anti-sediment backwashing back pressure valve as claimed in claim 1, it is characterized in that: piston is provided with piston stopper, is provided with the first seal ring between piston stopper and the valve rod.
3. anti-sediment backwashing back pressure valve as claimed in claim 1, it is characterized in that: be provided with packing ring and fastening screw between piston and the upper valve body, be provided with the second seal ring between top, piston cylinder chamber and the adjusting pressuring handle, be provided with the 3rd seal ring between valve rod and the valve rod guide pin bushing, be provided with the 4th seal ring between piston cylinder chamber and the valve rod guide pin bushing, lower valve body is provided with sealing seat and sealed socket sleeve, and the sealing seat bottom is provided with capping and the 5th seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010514761 CN102042431B (en) | 2010-10-21 | 2010-10-21 | Anti-sediment backwashing back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010514761 CN102042431B (en) | 2010-10-21 | 2010-10-21 | Anti-sediment backwashing back pressure valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102042431A CN102042431A (en) | 2011-05-04 |
| CN102042431B true CN102042431B (en) | 2013-03-20 |
Family
ID=43908837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010514761 Expired - Fee Related CN102042431B (en) | 2010-10-21 | 2010-10-21 | Anti-sediment backwashing back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042431B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455503A (en) * | 2013-09-21 | 2015-03-25 | 徐介斌 | High-pressure large-flow depressurizing valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0108043A1 (en) * | 1982-10-25 | 1984-05-09 | Osby Armatur Ab | Valve mechanism with built-in purifying filter |
| CN1049900A (en) * | 1989-08-26 | 1991-03-13 | 夏建新 | Multifunctional rotary valve |
| CN2581044Y (en) * | 2002-11-25 | 2003-10-22 | 冯忠 | Back-washing filter |
| CN2895931Y (en) * | 2006-04-14 | 2007-05-02 | 河南省高山阀门有限公司 | Dirt-filtering piston type pressure-reducing valve |
| CN201836480U (en) * | 2010-10-21 | 2011-05-18 | 徐志宇 | Sand-resistant backwash back pressure valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000035147A (en) * | 1998-07-16 | 2000-02-02 | Kayaba Ind Co Ltd | Seal structure for hydraulic equipment and counter balance valve using this seal structure |
| US7921880B2 (en) * | 2007-08-20 | 2011-04-12 | Hydraforce, Inc. | Three-way poppet valve with intermediate pilot port |
-
2010
- 2010-10-21 CN CN 201010514761 patent/CN102042431B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0108043A1 (en) * | 1982-10-25 | 1984-05-09 | Osby Armatur Ab | Valve mechanism with built-in purifying filter |
| CN1049900A (en) * | 1989-08-26 | 1991-03-13 | 夏建新 | Multifunctional rotary valve |
| CN2581044Y (en) * | 2002-11-25 | 2003-10-22 | 冯忠 | Back-washing filter |
| CN2895931Y (en) * | 2006-04-14 | 2007-05-02 | 河南省高山阀门有限公司 | Dirt-filtering piston type pressure-reducing valve |
| CN201836480U (en) * | 2010-10-21 | 2011-05-18 | 徐志宇 | Sand-resistant backwash back pressure valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-35147A 2000.02.02 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102042431A (en) | 2011-05-04 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20191021 |