CN106949269A - The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group - Google Patents
The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group Download PDFInfo
- Publication number
- CN106949269A CN106949269A CN201710203705.7A CN201710203705A CN106949269A CN 106949269 A CN106949269 A CN 106949269A CN 201710203705 A CN201710203705 A CN 201710203705A CN 106949269 A CN106949269 A CN 106949269A
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- Prior art keywords
- valve
- valve seat
- flexible pipe
- cylinder
- check valves
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- 239000012528 membrane Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 210000003660 reticulum Anatomy 0.000 description 26
- 230000009471 action Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
Abstract
The present invention relates to a kind of double flexible pipe membrane pump check valves of high pressure and unidirectional valve group.Compared to existing check valve, its improvements is the check valve：The flowing hole connected with valve cylinder inner chamber is offered on bonnet；Valve seat is ledge structure；The big end of valve seat is provided with long chamfering close to the part of small end；Part of the big end of valve seat away from small end coordinates with valve cylinder inwall gap, the sealing surface of sealing gasket is reached outside the spherical sealed section tangent plane of the contact with the conical cavity simultaneously, thus first of sealing of sealing gasket and the formation of valve seat conical cavity, and row buffering is entered to the impulsive force that valve element impacts valve seat, the spherical sealed section of valve element and the formation second sealing of valve seat conical cavity linear contact lay, and simultaneously spacing to the descending carry out of valve element.Not only solve that consumable accessory scope is big, cost depletions big, the problem of reliability is not high using the check valve, and at least two check valves unidirectional valve group to be formed of connecting is small and its internal fragile part is safeguarded and replaced in structure easy access using space.
Description
Technical field
The invention belongs to the check valve technical field with guide rod, the double flexible pipe membrane pumps of more particularly to a kind of high pressure are single
To valve and unidirectional valve group.
Background technology
Check valve is the critical component of the double flexible pipe membrane pumps of high pressure, plays unidirectional excessively stream.Due to pumped (conveying) mediums such as coal slurries
Abrasion, corrosivity, and check valve ceaselessly carries out opening and closing action during membrane pump high-voltage operation, to its valve element and
Valve seat brings continuous brute force attack and washed away at a high speed so that check valve turns into easily worn part, so the double flexible pipe barrier films of high pressure
Pump is directly affected with the performance and life-span of check valve the performance of membrane pump and continuously runs rate, to whole work system production capacity and sets
Standby running wastage influences huge.
The double flexible pipe membrane pump check valves of existing high pressure are limited due to its structure design, difficult to realize tired when 8.0Mpa works
The plot operation service life of more than 1000 hours, therefore membrane pump needs to carry out every year repeatedly maintenance and changes one-way valve member, seriously
Influence the production capacity for continuously running rate and whole work system of membrane pump；
Secondly, the consumable accessory scope changed needed for existing one-way valve member is big, as shown in figure 1, existing check valve includes valve
Lid 01, spring base 02, spring 03, valve element 04, clamp nut 05, sealing gasket 06, valve seat 07 and valve cylinder 08；The sidepiece of valve cylinder 08
Open up fluid issuing 09；Valve base cavity is made up of the conical cavity on top and the cylindrical cavity of bottom；Cylindrical cavity is used as fluid
Entrance 09；The upper end that bonnet 01 is fixed on valve cylinder 08 seals the upper end of valve cylinder 08；Valve seat 07 is arranged on the bottom of the inner chamber of valve cylinder 08
And the outer surface of valve seat is interference fitted with valve cylinder inwall；Valve element 04 is vertically installed in the inner chamber of valve cylinder 08, spring cup 02 and valve
Lid 01 is connected；One end of valve element 04 is inserted to spring cup, and the other end is inserted in the conical cavity of valve seat 07；Valve element 04 from upper and
Under spring 03, clamp nut 05 and sealing gasket 06 are installed successively；Fluid is flowed into from the lower end of valve cylinder 08 when using, and fluid is to valve
Core 04 applies pressure, and the upward pressuring spring 03 of valve element 04 shrinks, so as to form fluid intake between valve element 04 and valve seat 07, unidirectionally
Valve is opened, and fluid flows into valve cylinder inner chamber from the fluid intake, and the fluid issuing 010 opened up from valve cylinder sidepiece flows out, but
In long-term use due to the valve element 04 being hit in existing one-way valve structures, valve seat 07, valve cylinder 08, spring base 02, sealing gasket 06,
Spring 03 is required to change, and cost depletions are huge；
3rd, enter the structure design that side goes out under existing check valve, be difficult to realize that two or more valves are used in series, to improve
The operational reliability of membrane pump, even if realizing two valves or many valves are used in series reluctantly, its arrangement space also can very big and structure
Heaviness, is not easy to repair and maintenance and replaces its internal fragile part.
The content of the invention
The problem of in order to solve in background technology, the present invention proposes a kind of double flexible pipe membrane pump check valves of high pressure and list
To valve group, which solve that the existing check valve life-span is not high, consumable accessory scope is big, cost depletions big, the problem of reliability is not high, and
And the unidirectional valve group formed is using space is small and structure easy access safeguards its internal fragile part is convenient and replaces.
The present invention technical solution be：
The invention provides a kind of double flexible pipe membrane pump check valves of high pressure, including valve cylinder, bonnet, valve element, spring, compression
Nut, sealing gasket and valve seat；Bonnet is fixed on the upper end of valve cylinder；Valve seat is arranged on the bottom of valve cylinder inner chamber；Valve element is pacified vertically
In valve cylinder inner chamber；Valve element installs spring, clamp nut and sealing gasket successively from top to bottom；Valve base cavity by top cone
Shape chamber and the cylindrical cavity of bottom composition；Cylindrical cavity is used as fluid intake；
Its improvements is：The flowing hole connected with valve cylinder inner chamber is offered on the bonnet；Fluid enters from bottom to top
In valve cylinder, the structure of this bottom in and top out is easy to two individual event valves to be used in series time save space and mitigates weight；Valve seat is step
Structure；The big end of valve seat is provided with long chamfering at small end；Part of the big end of valve seat away from small end and valve cylinder inwall gap
Coordinate, this design not only ensures the assembling position gap of precision, but the main stress section impacted in valve seat by valve element have compared with
Big clearance gap, effectively prevent blastic deformation so that valve seat and valve cylinder interference rivet not easy to remove and then damage valve cylinder, most
The vulnerability of whole valve cylinder has been transferred completely into valve seat, consumable accessory range shorter.
In addition, the check valve is provided with two sealed structures, wherein, the sealing surface of sealing gasket reaches the valve element (ball
Shape seal section) outside the tangent plane of the contact with the conical cavity, thus first of sealing of sealing gasket and the formation of valve seat conical cavity.
Secondly, bonnet central of the invention opens up circular hole；The bonnet central opens up circular hole；The valve element is by four part groups
Into from top to bottom respectively including cylinder guide section, spacing section of screw thread, spherical sealed section and three-jaw guide section；Wherein, cylinder is led
On to section pocketed springs and insert into the circular hole of bonnet；Spacing section of screw thread is threadedly coupled with clamp nut；Spherical sealed section with
The conical cavity linear contact lay formation second sealing of valve seat；The cylindrical cavity of three-jaw guide section and valve seat coordinates, while ensure that valve
The correctness and stationarity of core action, improve reliability during non-return valve operational.
In order to prevent that sealing gasket from producing clamp nut and sealing gasket joining in play, the present invention in valve element percussive pressure during valve cylinder
Multiple locking grooves are offered on tactile face and on the face that is contacted with sealing gasket of spherical sealed section.
Fairlead is installed, fairlead is by being fixed on the circular hole side wall interior axle between cylinder guide section and the circular hole
To retainer ring spacing, thus bonnet will not be worn and torn by the relative motion of valve element and valve cover chamber, and the vulnerability of bonnet be transferred completely into
On fairlead, wear and tear only for fairlead, only fairlead need to be changed after abrasion.
The part that the above-mentioned big end of valve seat coordinates with valve cylinder inwall gap is provided with sealing ring.
It is horizontally disposed between valve cylinder and the big end of valve seat to have the first jackscrew, valve seat can be fixed by the first jackscrew
In the inside of valve cylinder without falling down, it is easy to check valve to carry out a whole set of installation and removal.
Clamp nut loosens during in order to prevent that valve element from moving up and down, and then reliability when improving valve element and non-return valve operational
Property, it is horizontally disposed between above-mentioned clamp nut and spacing section of the screw thread to have the second jackscrew.
The double flexible pipe membrane pumps of high pressure of above-mentioned at least two series connection constitute a unidirectional valve group with check valve.
It is an advantage of the invention that：
1st, the check valve life-span is high.Present invention improves valve cylinder and the structure processing technology of bonnet, it is easy to its rapid wear zero
Part valve seat and fairlead carry out Precision Machining and heat treatment reinforcement, improve the service life of valve cylinder and bonnet；While valve element
Design structure also alleviates the impulsive force between valve element and valve seat；These effectively increase the service life of check valve.
2nd, consumable accessory scope is small, cost depletions are small.The design that valve cylinder and valve seat of the present invention are coordinated using long chamfering and gap
So that its vulnerability is transferred completely on valve seat, its body element valve cylinder is protected；The design that fairlead is installed on bonnet causes
Its vulnerability is transferred completely on fairlead, protects its body element bonnet；These effectively reduce the consumable accessory of check valve
Scope and cost depletions.
3rd, the sealing surface of sealing gasket of the invention reach spherical sealed section contact with conical cavity tangent plane it
Outside, thus first of sealing of sealing gasket and the formation of valve seat conical cavity, and row buffering is entered to the impulsive force that valve element impacts valve seat.Simultaneously
Spherical sealed section and the formation second sealing of valve seat conical cavity linear contact lay, and it is spacing to the descending carry out of valve element, further carry
The high sealing property of check valve.
4th, reliability is high.The second jackscrew and the locking groove design of valve element of the present invention, effectively prevent valve element percussive pressure upper valve
During cylinder, clamp nut loosens and sealing gasket play；The upper and lower ends cylinder of valve element is oriented to middle ball face sealing position limiting structure design,
It ensure that the correctness and stationarity of valve element action；These all improve reliability during non-return valve operational.
5th, easy access is safeguarded and dismounted.Valve seat, can be fixed on by the design of the jackscrew of addition first of valve cylinder of the present invention
It is easy to check valve to carry out a whole set of installation and removal, it is internal easily that it is safeguarded and replaced to easy access without falling down in the inside of valve cylinder
Damage parts.
6th, to be used in series space small for the unidirectional valve group constituted using at least two check valves, lightweight.Bonnet of the present invention
Flowing hole design so that the pumped (conveying) medium in valve cylinder inner chamber can be exported by the flowing hole on spring base cover plate, it is this under enter
On the structure that goes out be easy to unidirectional valve group to mitigate weight using time save space.
Brief description of the drawings
Fig. 1 is the structure diagram of existing check valve；
Reference is as follows：
01- bonnets, 02- spring bases, 03- springs, 04- valve elements, 05- clamp nuts, 06- sealing gaskets, 07- valve seats, 08- valves
Cylinder, 09- fluid intakes, 010- fluid issuings.
Fig. 2 is the structure diagram of check valve of the present invention.
Fig. 3 is the structure diagram of valve element.
Reference is as follows：
1- bonnets, 2- fairleads, 3- springs, 4- valve elements, 41- cylinders guide section, spacing section of 42- screw threads, 43- spherical sealeds
Section, 44- three-jaws guide section, 5- clamp nuts, 6- sealing gaskets, 7- valve seats, 8- valve cylinders, 9- sealing rings, the jackscrews of 10- first, 11- circle
Cylinder chamber, 12- valve cylinders inner chamber, the jackscrews of 13- second, 14- flowing holes, 15- shaft block rings, the long chamferings of 16-, 17 locking grooves, 18- valves
Seat inner chamber, 19- conical cavities.
Embodiment
The concrete structure and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
Structure of the present invention：
As shown in Fig. 2 the check valve include valve cylinder 8, bonnet 1, valve element 4, spring 3, clamp nut 5, sealing gasket 6 and
Valve seat 7；Valve base cavity 18 is made up of the conical cavity 19 on top and the cylindrical cavity 11 of bottom；Cylindrical cavity enters as fluid
Mouthful；
Bonnet 1 is fixed on the top of the inner chamber of valve cylinder 8；Valve seat 7 is arranged on the bottom of valve cylinder inner chamber 12；Valve element 4 is vertically-mounted
In valve cylinder inner chamber 12；Valve element 4 installs spring 3, clamp nut 5 and sealing gasket 6 successively from top to bottom；
The flowing hole 14 connected with valve cylinder inner chamber is offered on bonnet 1；Fluid enters valve cylinder inner chamber 12 from bottom to top, this
The structure of bottom in and top out is easy at least two check valves to be used in series time save space and mitigates weight；Valve seat 7 is ledge structure；Valve
The big end of seat 7 is provided with long chamfering 16 close to the part of the small end of valve seat 7；Part and valve of the big end of valve seat 7 away from the small end of valve seat 7
Cylinder 8 inwall gaps coordinate, it is this design not only ensure precision assembling position gap, and valve seat by valve element impact it is main by
Power section has larger clearance gap, effectively prevent blastic deformation so that valve seat and valve cylinder interference are riveted not easy to remove and then damaged
Bad valve cylinder, the vulnerability of final valve cylinder has been transferred completely into valve seat, consumable accessory range shorter.
In addition, 6 sealing surfaces of sealing gasket reach the valve element (the actual spherical sealed section 43 for valve element) and the cone
Outside the contact tangent plane of shape chamber 19, thus first of sealing of sealing gasket 6 and the formation of valve seat conical cavity 19, and valve seat is impacted to valve element
Impulsive force enter row buffering.
As shown in figure 3, the center of bonnet 1 opens up circular hole；Valve element 4 is made up of four parts, is led respectively including cylinder from top to bottom
To section 41, spacing section 42 of screw thread, spherical sealed section 43 and three-jaw guide section 44；Wherein, pocketed springs 3 on cylinder guide section 41
And insert into the circular hole of bonnet 1；Screw thread coordinates for spacing section 42 with clamp nut 5；Spherical sealed section 43 and the conical cavity of valve seat 7
Linear contact lay formation second sealing；The cylindrical cavity 11 of three-jaw guide section 44 and valve seat 7 coordinates, and thereby ensures that valve element action
Correctness and stationarity, improve reliability during non-return valve operational.
Connect to prevent that sealing gasket 6 from producing clamp nut 5 in play, the present invention when valve element 4 impacts valve cylinder with sealing gasket 6
Multiple locking grooves 17 are offered on tactile face and on the face that is contacted with sealing gasket 6 of spherical sealed section.
Fairlead 2 is installed, fairlead 2 is by being fixed on the circle between the circular hole on cylinder guide section 41 and bonnet 1
Axial back-up ring 15 is spacing in the wall of hole side, shaft block ring 15 be directed to set 2 be fixed on bonnet 1 be allowed to can not axial float, thus
Bonnet 1 will not be worn and torn by the relative motion between valve element 4 and bonnet 1, and the vulnerability of bonnet 1 has been transferred completely on fairlead 2, mill
Damage only for fairlead 2, only fairlead need to be changed after abrasion.The part that end coordinates with the inwall gap of valve cylinder 8 greatly of valve seat 7
Sealing ring 9 is installed.Sealing ring 9 is used for preventing that pumped (conveying) medium from leaking between conical valve base 7 and valve cylinder 8；Valve cylinder 8 and valve seat 7 are big
It is horizontally disposed between end to have the first jackscrew 10, by the first jackscrew 10 valve seat 7 can be fixed on valve cylinder 8 inside and
Do not fall down, be easy to check valve to carry out a whole set of installation and removal.
In order to which clamp nut 5 loosens when preventing that valve element 4 from moving up and down, and then when improving valve element 4 and non-return valve operational
It is horizontally disposed between spacing section 42 of reliability, clamp nut 5 and the screw thread to have the second jackscrew 13.
In addition, the present invention connects at least two check valves, unidirectional valve group can be formed.
The principle of the invention：
This check valve is arranged on the upper and lower ends exit port position of double flexible pipe membrane pump flexible pipes, is achieved in coal slurry etc. defeated
Send the one-way flow of medium.Membrane pump is a kind of displacement pump, by its flexible pipe inner chamber sealed volume size variation, to realize conveying
Medium：The inner elements of check valve 4 that its flexible pipe inner chamber sealed volume becomes at hour, the pressure increase of its inner chamber, lower inlet is in bullet
It is pressed in the presence of spring 3 and the pressure of valve cylinder inner chamber 12 on valve seat 7, inlet one-way valve is in sealing closed mode, upper end outlet
The valve element of place's (flowing hole 14) check valve is moved up when chamber pressure overcomes 3 thrust of spring, opens Outlet check valves valve
Sealing between core 4 and valve seat 7, pumped (conveying) medium enters valve cylinder inner chamber by barrier film pump hose inner chamber sealed volume by valve seat lower end
12, and then enter the export pipeline of membrane pump by flowing hole 14 again；
Conversely, when its flexible pipe inner chamber sealed volume becomes big, the pressure of its inner chamber reduces to form vacuum, at upper end outlet
Inner elements of check valve 4 is pressed on valve seat 7 under spring 3 and the active force of membrane pump outlet loine pressure, and Outlet check valves are in
The valve element for sealing check valve at closed mode, lower inlet is moved up when inner chamber vacuum pressure overcomes 3 thrust of spring, is beaten
The sealing between inlet one-way valve valve element 4 and valve seat 7 is opened, pumped (conveying) medium enters valve by membrane pump entrance pipe by valve seat lower end
Tube inner chamber 12, and then enter the flexible pipe inner chamber sealed volume of membrane pump by flowing hole 14 again.
Claims (9)
1. a kind of double flexible pipe membrane pump check valves of high pressure, including valve cylinder, bonnet, valve element, spring, clamp nut, sealing gasket with
And valve seat；Bonnet is fixed on the top of valve cylinder inner chamber；Valve seat is arranged on the bottom of valve cylinder inner chamber；Valve element is vertically installed in valve cylinder
In chamber；Valve element installs spring, clamp nut and sealing gasket successively from top to bottom；Valve base cavity by top conical cavity and under
The cylindrical cavity composition in portion；Cylindrical cavity is used as fluid intake；
It is characterized in that：The flowing hole connected with valve cylinder inner chamber is offered on the bonnet；Valve seat is ledge structure；Valve seat it is big
End is provided with long chamfering close to the part of small end；Part of the big end of valve seat away from small end coordinates with valve cylinder inwall gap.
2. the double flexible pipe membrane pump check valves of high pressure according to claim 1, it is characterised in that：The sealing surface of sealing gasket is stretched
Go out to outside the valve element tangent plane of the contact with the conical cavity, thus first of the sealing of sealing gasket and the formation of valve seat conical cavity.
3. the double flexible pipe membrane pump check valves of high pressure according to claim 2, it is characterised in that：The bonnet central is opened up
Circular hole；The valve element is made up of four parts, from top to bottom respectively include cylinder guide section, spacing section of screw thread, spherical sealed section with
And three-jaw guide section；Wherein, on cylinder guide section pocketed springs and insert into the circular hole of bonnet；Spacing section of screw thread is with compressing spiral shell
Box thread is connected；Spherical sealed section and the conical cavity linear contact lay formation second sealing of valve seat；The circle of three-jaw guide section and valve seat
Cylinder chamber coordinates.
4. the double flexible pipe membrane pump check valves of high pressure according to claim 3, it is characterised in that：The clamp nut with it is close
Multiple locking grooves are offered on the face of packing contact and on the face that is contacted with sealing gasket of spherical sealed section.
5. the double flexible pipe membrane pump check valves of high pressure according to claim 4, it is characterised in that：The cylinder guide section with
Fairlead is installed, fairlead is by being fixed in the wall of the circular hole side axial retainer ring spacing between the circular hole.
6. the double flexible pipe membrane pump check valves of high pressure according to claim 5, it is characterised in that：The big end of valve seat and valve
The part that cylinder inwall gap coordinates is provided with sealing ring.
7. the double flexible pipe membrane pump check valves of high pressure according to claim 6, it is characterised in that：Valve cylinder and the big end of valve seat it
Between horizontally disposed have the first jackscrew.
8. the double flexible pipe membrane pump check valves of high pressure according to claim 7, it is characterised in that：The clamp nut and institute
Stating horizontally disposed between spacing section of screw thread has the second jackscrew.
9. a kind of unidirectional valve group of the double flexible pipe membrane pumps of high pressure, it is characterised in that：Including at least two series connection such as claim
The double flexible pipe membrane pump check valves of any described high pressures of 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203705.7A CN106949269A (en) | 2017-03-30 | 2017-03-30 | The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203705.7A CN106949269A (en) | 2017-03-30 | 2017-03-30 | The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106949269A true CN106949269A (en) | 2017-07-14 |
Family
ID=59475031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710203705.7A Pending CN106949269A (en) | 2017-03-30 | 2017-03-30 | The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106949269A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883004A (en) * | 2017-10-11 | 2018-04-06 | 中国航发西安动力控制科技有限公司 | A kind of cone valve component |
| CN107965446A (en) * | 2018-01-03 | 2018-04-27 | 昆山华亿丰涂装设备科技有限公司 | A kind of three ball diaphragm pumps |
| CN108302030A (en) * | 2018-01-30 | 2018-07-20 | 浙江大农实业股份有限公司 | High pressure check valve suitable for cleaning machine high-pressure plunger pump |
| CN108678945A (en) * | 2018-06-06 | 2018-10-19 | 陕西航天动力高科技股份有限公司 | High-pressure diaphragm pump check valve |
| CN110905866A (en) * | 2019-11-08 | 2020-03-24 | 陕西航天动力高科技股份有限公司 | Single buffer at outlet of diaphragm pump |
| CN110975728A (en) * | 2019-12-26 | 2020-04-10 | 李回秀 | Homogenizing valve of high-pressure homogenizer |
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| CN2193444Y (en) * | 1994-06-07 | 1995-03-29 | 李双武 | Pump valve of well boring pump |
| JP2006153205A (en) * | 2004-11-30 | 2006-06-15 | Kitz Corp | Needle valve |
| CN101275555A (en) * | 2008-03-31 | 2008-10-01 | 浙江工业大学 | Hollow structure valve core for reciprocating pump in-out one-way valve set |
| CN201818848U (en) * | 2010-10-26 | 2011-05-04 | 天津银河阀门有限公司 | Spherical flange connecting noise-reducing bottom valve |
| CN203272897U (en) * | 2013-04-20 | 2013-11-06 | 大唐国际发电股份有限公司张家口发电厂 | Small water ring vacuum pump suction inlet check valve |
| US20150144826A1 (en) * | 2013-11-26 | 2015-05-28 | S.P.M. Flow Control, Inc. | Valve seats for use in fracturing pumps |
| CN105299268A (en) * | 2014-07-26 | 2016-02-03 | 李玉俊 | Check valve with separate valve body and valve seat |
| CN206694601U (en) * | 2017-03-30 | 2017-12-01 | 陕西航天动力高科技股份有限公司 | The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group |
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2017
- 2017-03-30 CN CN201710203705.7A patent/CN106949269A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2193444Y (en) * | 1994-06-07 | 1995-03-29 | 李双武 | Pump valve of well boring pump |
| JP2006153205A (en) * | 2004-11-30 | 2006-06-15 | Kitz Corp | Needle valve |
| CN101275555A (en) * | 2008-03-31 | 2008-10-01 | 浙江工业大学 | Hollow structure valve core for reciprocating pump in-out one-way valve set |
| CN201818848U (en) * | 2010-10-26 | 2011-05-04 | 天津银河阀门有限公司 | Spherical flange connecting noise-reducing bottom valve |
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| CN105299268A (en) * | 2014-07-26 | 2016-02-03 | 李玉俊 | Check valve with separate valve body and valve seat |
| CN206694601U (en) * | 2017-03-30 | 2017-12-01 | 陕西航天动力高科技股份有限公司 | The double flexible pipe membrane pump check valves of high pressure and unidirectional valve group |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883004A (en) * | 2017-10-11 | 2018-04-06 | 中国航发西安动力控制科技有限公司 | A kind of cone valve component |
| CN107965446A (en) * | 2018-01-03 | 2018-04-27 | 昆山华亿丰涂装设备科技有限公司 | A kind of three ball diaphragm pumps |
| CN108302030A (en) * | 2018-01-30 | 2018-07-20 | 浙江大农实业股份有限公司 | High pressure check valve suitable for cleaning machine high-pressure plunger pump |
| CN108678945A (en) * | 2018-06-06 | 2018-10-19 | 陕西航天动力高科技股份有限公司 | High-pressure diaphragm pump check valve |
| CN110905866A (en) * | 2019-11-08 | 2020-03-24 | 陕西航天动力高科技股份有限公司 | Single buffer at outlet of diaphragm pump |
| CN110975728A (en) * | 2019-12-26 | 2020-04-10 | 李回秀 | Homogenizing valve of high-pressure homogenizer |
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Application publication date: 20170714 |
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| RJ01 | Rejection of invention patent application after publication |