CN113653836A - Reciprocating pump with one-way valve structure and reliable operation - Google Patents
Reciprocating pump with one-way valve structure and reliable operation Download PDFInfo
- Publication number
- CN113653836A CN113653836A CN202110964874.9A CN202110964874A CN113653836A CN 113653836 A CN113653836 A CN 113653836A CN 202110964874 A CN202110964874 A CN 202110964874A CN 113653836 A CN113653836 A CN 113653836A
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- Prior art keywords
- valve
- inlet
- buffering
- valve seat
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 59
- 230000003139 buffering effect Effects 0.000 claims abstract description 40
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 mining Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- 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
- F16K15/04—Check valves with guided rigid valve members shaped as balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Abstract
The invention provides a one-way valve structure and a reciprocating pump with reliable work, which comprises a valve seat with an inlet, a valve cover with an outlet, a valve ball for opening and closing the inlet and a connecting pipe connected with the outlet, wherein a buffering sealing element is arranged between the valve cover and the valve seat, the buffering sealing element is positioned at the inlet and at least partially protrudes out of the upper surface of the inlet, so that the valve ball is firstly contacted with the buffering sealing element to form buffering when returning to the valve seat and then contacted with the valve seat to form sealing; and no particle exists on the sealing surface when the valve ball contacts with the valve seat, the sealing is tight, even if the flow rate is very high under the high-pressure working condition, the valve seat can not cause serious cavitation erosion to lose efficacy, and the service life is prolonged.
Description
Technical Field
The invention relates to the field of reciprocating pumps, in particular to a reciprocating pump with a one-way valve structure and reliable work.
Background
The reciprocating pump is an indispensable core device in the industries of petroleum, petrifaction, thermal power, chemical industry, environmental protection and the like. Among them, slurry pumps and coal slurry pumps are widely used in petroleum, mining, coal chemical industry and other industries.
The above-described reciprocating pumps have one common feature: the conveyed materials contain solid particles and the conveying flow is large, so that the one-way valves at the inlet and the outlet of the pump are easy to be stuck and worn when the materials containing the particles are conveyed. The disadvantages are that:
1. when the valve ball returns to the seat, the valve ball and the valve seat are contacted and collided to generate rebound, the rebound track of the valve ball is random, the valve ball falls onto the valve seat after colliding with the valve ball guide rail for many times, the valve ball does not return timely, and the material backflow amount is large.
2. If particles exist on a sealing surface when the valve ball is contacted with the valve seat, the sealing is not tight, the flow rate is very high under the high-pressure working condition, and the valve seat can cause serious cavitation erosion and failure.
3. The valve ball irregularly collides with vibration to generate a large noise.
Disclosure of Invention
The invention aims to provide a one-way valve structure with long service life, low abrasion and low noise and a reciprocating pump with reliable work.
In order to achieve the purpose, the invention adopts the following technical scheme: a one-way valve structure comprises a valve seat with an inlet, a valve cover with an outlet, a valve ball for opening and closing the inlet and a connecting pipe connected with the outlet, wherein a buffering sealing element is arranged between the valve cover and the valve seat and made of wear-resistant non-metallic materials, the buffering sealing element is positioned at the inlet and at least partially protrudes out of the upper surface of the inlet, so that the valve ball firstly contacts with the buffering sealing element to form buffering when returning to the valve seat and then contacts with the valve seat to form sealing.
Furthermore, the buffering sealing element is provided with a sealing surface attached to the outer surface of the valve ball, and the sealing surface is an inclined surface.
Furthermore, the included angle between the sealing surface and the vertical direction is beta, and the beta is more than or equal to 12 degrees and less than or equal to 25 degrees.
Furthermore, the upper surface of the inlet is an inclined plane, the included angle between the inclined plane and the vertical direction is alpha, and beta is less than alpha.
Further, the alpha is 30-60 degrees.
Further, the valve cover and the valve seat are installed in place, and the upper surface of the outer end of the buffering sealing member is at least partially pressed by the lower end face of the valve cover.
Furthermore, an exhaust hole and/or a liquid discharge hole are/is formed in the valve cover.
Furthermore, a vibration sensor interface is arranged on the valve seat.
Further, the inner side wall of the valve housing is provided with a valve ball guide rail for guiding the valve ball to the inlet.
Furthermore, the invention also provides a reciprocating pump, which comprises the one-way valve structure in any one of the technical schemes.
After the technical scheme is adopted, the invention has the following advantages:
1. according to the invention, the buffering sealing element is arranged between the valve cover and the valve seat, and the buffering sealing element is positioned at the inlet and at least partially protrudes out of the upper surface of the inlet, so that the valve ball can be firstly contacted with the buffering sealing element when returning to the valve seat, good buffering is formed on the returning seat of the valve ball, the valve ball is prevented from being bounced by the valve seat, the inlet can be closed in time, the material backflow amount is greatly reduced, and the control precision is improved; in addition, no particles exist on a sealing surface when the valve ball is contacted with the valve seat, the sealing is tight, even if the flow rate is very high under a high-pressure working condition, the valve seat cannot cause serious cavitation erosion and failure, the service life is prolonged, and the abrasion is also greatly reduced; in addition, the buffering sealing element can buffer the valve ball well, so that the valve ball cannot generate large noise due to irregular collision and vibration in the valve cover, and the noise generated during the work of the one-way valve structure and the work of the reciprocating pump is greatly reduced.
2. Through set up the sealed face of laminating with the surface of valve ball on buffering sealing member, and sealed face is the inclined plane, so conveniently cushion the contact buffering between sealing member and the valve ball, can also promote sealed effect greatly.
3. Through being less than alpha with beta setting to, so can be better guarantee return valve ball earlier with buffering sealing member contact when the disk seat, played good buffering, the effect of direction, played good sealing in advance simultaneously, no residual material has been gone up on the sealed face of disk seat this moment, and then valve ball and disk seat contact seal, ensure that can not erodeed by cavitation at high pressure operating mode disk seat, promote life and durability.
4. The upper surface of the outer end of the buffering sealing element is at least partially compressed through the valve cover, so that the fixing effect of the buffering sealing element is guaranteed, the buffering sealing element is prevented from falling off, and the normal and stable action effect is guaranteed.
5. Through be equipped with exhaust hole and/or outage on the valve bonnet, firstly with the gas in the flowing back header fast discharge when the start-up pump, secondly with the liquid discharge pump outside in the flowing back header when stopping the pump, prevent to freeze impaired.
6. Through being equipped with the vibration sensor interface on the disk seat, can convey the signal to the analysis appearance, monitor the operating condition of check valve often, ensured the safe and reliable operation of reciprocating pump.
7. Through the inside wall at the valve bonnet be equipped with and be used for guiding the valve ball to the valve ball guide rail of import department, so can guide the valve ball to import department fast, greatly reduced material backward flow volume promotes control accuracy.
8. The invention also provides a reciprocating pump, which can greatly improve the control precision and the service life of the reciprocating pump and reduce the noise during working after adopting the one-way valve structure in any technical scheme.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a longitudinal sectional view showing the structure of the check valve according to the present invention.
Fig. 2 is an enlarged view of B in fig. 1.
Fig. 3 is a sectional view taken along a line a-a in fig. 1.
The names of the components marked in the figures are as follows:
1. a valve seat; 11. an inlet; 111. an upper surface; 12. a vibration sensor interface; 2. a valve housing; 21. an outlet; 22. an exhaust hole; 23. a drain hole; 24. a valve ball guide rail; 3. a valve ball; 4. taking over a pipe; 5. a cushioning seal; 51. a sealing surface; 6. a gasket; 7. a valve group pressing plate; 8. locking the bolt; 9. and an O-shaped sealing ring.
Detailed Description
In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1 to 3, the present invention provides a check valve structure, which includes a valve seat 1 having an inlet 11, a valve housing 2 having an outlet 21, a valve ball 3 for opening and closing the inlet 11, and a connection pipe 4 connected to the outlet 21, wherein a valve group pressure plate 7 is sleeved outside the connection pipe 4, the valve group pressure plate 7 is fixed to a reciprocating pump by a locking bolt 8 and connects the connection pipe 4 with the valve housing 2, a sealing gasket 6 is disposed at a connection position of the connection pipe 4 and the valve housing 2 to ensure sealing, and an O-shaped sealing ring 9 is disposed at a bottom of the valve seat 1 to ensure mounting sealing between the check valve structure and the reciprocating pump.
In this embodiment, a buffering sealing member 5 is disposed between the valve cover 2 and the valve seat 1, and the buffering sealing member 5 is located at the inlet 11 and at least partially protrudes from the upper surface 111 of the inlet 11, so that the valve ball 4 contacts the buffering sealing member 5 to form buffering when returning to the valve seat 1, and then contacts the valve seat 1 to form sealing, so that the valve ball can contact the buffering sealing member first when returning to the valve seat, and a good buffer is formed for the returning seat of the valve ball, thereby preventing the valve ball from being bounced by the valve seat, so that the inlet can be closed in time, the material returning amount is greatly reduced, and the control accuracy is improved; in addition, no particles exist on a sealing surface when the valve ball is contacted with the valve seat, the sealing is tight, even if the flow rate is very high under a high-pressure working condition, the valve seat cannot cause serious cavitation erosion and failure, the service life is prolonged, and the abrasion is also greatly reduced; in addition, the buffering sealing element can buffer the valve ball well, so that the valve ball cannot generate large noise due to irregular collision and vibration in the valve cover, and the noise generated during the work of the one-way valve structure and the work of the reciprocating pump is greatly reduced.
Specifically, buffering sealing member 5 is made by wear-resisting and non-metallic material, specifically is rubber seal, like hydrogenated nitrile rubber (HNBR), its wearability is good, promote life greatly, and the cushioning nature is also good, still can be nitrile rubber (NBR) or rubber, plastics material etc. buffering sealing member 5 is equipped with the sealed face 51 with the surface laminating of valve ball 3, sealed face 51 is the inclined plane, so make things convenient for the contact buffering between buffering sealing member and the valve ball, can also promote sealed effect greatly.
And, the contained angle between sealed face and the vertical direction is beta, beta is more than or equal to 12 is less than or equal to 25, beta specifically is 18, simultaneously, the upper surface 111 of import 11 also is the inclined plane, the contained angle between inclined plane and the vertical direction is alpha, beta is less than alpha, so can better guarantee to contact with buffering sealing member earlier when the valve ball returns the disk seat, good buffering, the effect of direction has been played, good preliminary sealing has been played simultaneously, there is not residual material on the sealed face of disk seat this moment, and then valve ball and disk seat contact seal, ensure that the disk seat can not be erodeed by the cavitation under high pressure operating mode, life and durability are promoted.
And alpha is 30-60 degrees, and alpha is 38 degrees specifically, so that the buffer effect is good, and the sealing is reliable.
Secondly, valve bonnet 2 and disk seat 1 installation target in place, the outer end upper surface of buffering sealing member 5 is compressed tightly by the lower terminal surface of valve bonnet 2 at least part to guarantee the fixed effect of buffering sealing member, prevent to drop, guarantee its normal and stable effect.
In addition, the valve cover 2 can be provided with an exhaust hole 22 and/or a liquid discharge hole 23, so that gas in the liquid discharge manifold is quickly discharged when the pump is started, and liquid in the liquid discharge manifold is discharged outside the pump when the pump is stopped, thereby preventing damage caused by freezing.
In order to ensure the safe and reliable operation of the reciprocating pump, a vibration sensor interface 12 can be arranged on the valve seat 1, signals can be transmitted to an analyzer, the working state of the one-way valve is monitored at any time, and the safe and reliable operation of the reciprocating pump is ensured; and, vibration sensor's probe has the screw thread, and the swivelling joint is on the disk seat, and signal transmission such as vibration frequency, the amplitude of valves to the analysis appearance, the analysis appearance can set up in the central control room, also can establish in the electrical control cabinet on the spot, so detect the operating mode of check valve structure and reciprocating pump in order to guarantee safe and reliable operation.
In order to improve the control precision, a valve ball guide rail 24 for guiding the valve ball 3 to the inlet 11 can be arranged on the inner side wall of the valve housing 2, so that the valve ball can be quickly guided to the inlet, the material backflow amount is greatly reduced, and the control precision is improved.
It is understood that β may also be 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 19 °, 20 °, 21 °, 22 °, 23 °, 24 °, 25 °, etc.
It is understood that α may also be 30 °, 32 °, 34 °, 35 °, 36 °, 38 °, 40 °, 42 °, 45 °, 50 °, 52 °, 55 °, 58 °, 60 °, etc.
Finally, the invention also provides a reciprocating pump which comprises the one-way valve structure in any technical scheme, and after the one-way valve structure in any technical scheme is adopted, the control precision and the service life of the reciprocating pump can be greatly improved, and the noise in working can be reduced.
In addition to the above preferred embodiments, the technical solutions protected by the present invention are not limited to the above embodiments, and it should be noted that the technical solutions of any one embodiment are combined with the technical solutions of one or more other embodiments within the protection scope of the present invention. Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A one-way valve structure comprises a valve seat with an inlet, a valve cover with an outlet, a valve ball for opening and closing the inlet and a connecting pipe connected with the outlet, and is characterized in that a buffering sealing piece is arranged between the valve cover and the valve seat and made of wear-resistant non-metallic materials, and the buffering sealing piece is positioned at the inlet and at least partially protrudes out of the upper surface of the inlet, so that the valve ball firstly contacts with the buffering sealing piece to form buffering when returning to the valve seat and then contacts with the valve seat to form sealing.
2. The check valve arrangement of claim 1, wherein the cushioning seal member has a sealing surface that engages an outer surface of the valve ball, the sealing surface being beveled.
3. The one-way valve structure of claim 2, wherein the angle between the sealing surface and the vertical is β, β being 12 ° or more and 25 ° or less.
4. A check valve arrangement as claimed in claim 3, wherein the upper surface of the inlet is bevelled at an angle α, β < α, to the vertical.
5. The check valve structure of claim 4, wherein α is 30 ° to 60 °.
6. The one-way valve structure of claim 1, wherein the valve housing is mounted in position with the valve seat, and the upper surface of the outer end of the cushioning seal is at least partially compressed by the lower end surface of the valve housing.
7. The one-way valve structure according to claim 1, wherein the valve housing is provided with a vent hole and/or a drain hole.
8. The one-way valve structure of claim 1, wherein a vibration sensor port is provided on the valve seat.
9. The one-way valve structure of claim 1, wherein an inner sidewall of the valve housing is provided with a valve ball guide for guiding the valve ball at the inlet.
10. A reciprocating pump which operates reliably, comprising a one-way valve arrangement as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110964874.9A CN113653836A (en) | 2021-08-20 | 2021-08-20 | Reciprocating pump with one-way valve structure and reliable operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110964874.9A CN113653836A (en) | 2021-08-20 | 2021-08-20 | Reciprocating pump with one-way valve structure and reliable operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113653836A true CN113653836A (en) | 2021-11-16 |
Family
ID=78491927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110964874.9A Pending CN113653836A (en) | 2021-08-20 | 2021-08-20 | Reciprocating pump with one-way valve structure and reliable operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113653836A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2470577Y (en) * | 2001-02-21 | 2002-01-09 | 王起刚 | Pump valve of reciprocating pump for injecting polymers |
| DE102008055612A1 (en) * | 2008-11-03 | 2010-05-06 | Thomas Magnete Gmbh | Reciprocating piston pump for use as e.g. solenoid-operated injection pump for delivering liquid fuel, has seat body with valve seat in support of dosing cylinder, where support and valve seat are opposite to actuator |
| CN102401158A (en) * | 2011-07-11 | 2012-04-04 | 西安泵阀总厂有限公司 | Corrosion-resisting manual liquid drainage non-return foot valve of centrifugal pump |
| CN202954961U (en) * | 2012-11-19 | 2013-05-29 | 浙江爱力浦泵业有限公司 | One-way valve of metering pump |
| CN207246462U (en) * | 2017-08-18 | 2018-04-17 | 宁夏软件工程院有限公司 | A kind of electrolyte sealed valve |
| CN207500544U (en) * | 2017-10-09 | 2018-06-15 | 陕西航天动力高科技股份有限公司 | A kind of spherical shape plugging type check valve |
| CN212251170U (en) * | 2020-04-29 | 2020-12-29 | 南京兴泰龙特种陶瓷有限公司 | 95 ceramic ball valve for spray drying pressure diaphragm pump |
| WO2021037249A1 (en) * | 2019-08-29 | 2021-03-04 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve |
| CN216045632U (en) * | 2021-08-20 | 2022-03-15 | 德帕姆(杭州)泵业科技有限公司 | Check valve structure for reciprocating pump and reciprocating pump |
-
2021
- 2021-08-20 CN CN202110964874.9A patent/CN113653836A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2470577Y (en) * | 2001-02-21 | 2002-01-09 | 王起刚 | Pump valve of reciprocating pump for injecting polymers |
| DE102008055612A1 (en) * | 2008-11-03 | 2010-05-06 | Thomas Magnete Gmbh | Reciprocating piston pump for use as e.g. solenoid-operated injection pump for delivering liquid fuel, has seat body with valve seat in support of dosing cylinder, where support and valve seat are opposite to actuator |
| CN102401158A (en) * | 2011-07-11 | 2012-04-04 | 西安泵阀总厂有限公司 | Corrosion-resisting manual liquid drainage non-return foot valve of centrifugal pump |
| CN202954961U (en) * | 2012-11-19 | 2013-05-29 | 浙江爱力浦泵业有限公司 | One-way valve of metering pump |
| CN207246462U (en) * | 2017-08-18 | 2018-04-17 | 宁夏软件工程院有限公司 | A kind of electrolyte sealed valve |
| CN207500544U (en) * | 2017-10-09 | 2018-06-15 | 陕西航天动力高科技股份有限公司 | A kind of spherical shape plugging type check valve |
| WO2021037249A1 (en) * | 2019-08-29 | 2021-03-04 | 北京天地玛珂电液控制系统有限公司 | Hydraulic control one-way valve |
| CN212251170U (en) * | 2020-04-29 | 2020-12-29 | 南京兴泰龙特种陶瓷有限公司 | 95 ceramic ball valve for spray drying pressure diaphragm pump |
| CN216045632U (en) * | 2021-08-20 | 2022-03-15 | 德帕姆(杭州)泵业科技有限公司 | Check valve structure for reciprocating pump and reciprocating pump |
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