CN105697361A - Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump - Google Patents
Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump Download PDFInfo
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- CN105697361A CN105697361A CN201410690416.0A CN201410690416A CN105697361A CN 105697361 A CN105697361 A CN 105697361A CN 201410690416 A CN201410690416 A CN 201410690416A CN 105697361 A CN105697361 A CN 105697361A
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Abstract
The invention discloses a lower-guide-free conic one-way valve for a high-temperature mud diaphragm pump. The lower-guide-free conic one-way valve comprises a valve base and a valve cone; the valve base is not internally provided with a lower guide groove and a supporting rib, a diversion trench is formed in the side face of the valve base, and the inner wall face of a channel comprises a first inversed-truncated-cone-shaped sealing face section; the valve cone is not provided with a lower guide support and comprises a cone body and a guide rod, the lower end of the guide rod is connected with the upper surface of the cone body, and a side wall face of the cone body is provided with a second inversed-truncated-cone-shaped sealing face section; and the valve cone is arranged in the channel and can move between the closing position and the opening position in the vertical direction, wherein at the closing position, the second inversed-truncated-cone-shaped sealing face section is in contact with the first inversed-truncated-cone-shaped sealing face section, and a zone, located below the lower surface of the cone body, of the channel forms a cavity. According to the lower-guide-free conic one-way valve for the high-temperature mud diaphragm pump, the lower guide groove and the supporting rib do not exist in the valve base, and the lower guide support does not exist in the valve cone, so that new bubbles are prevented from being generated when mud flows through the valve base, and cavitation damage caused by collapsing of the bubbles on the sealing faces is reduced.
Description
Technical field
The present invention relates to a kind of check valve, more particularly to a kind of for high temperature mud membrane pump without lower guiding cone shaped one-way valve。
Background technology
In correlation technique for the check valve of high temperature diaphragm pump, the fairlead matched due to the guide post being provided with in valve seat with valve cone lower surface and the brace rod overlapped for fixed guide, at a high speed, when the slurry of thickness is in stream is by valve seat, need to walk around brace rod, so can form eddy region at the rear of brace rod, partially liq in slurry is vaporized because of decompressing effect formation bubble, when valve cone is closed, flow through the bubble between valve cone and sealing surface of seat crumble and fall under the contention effect of valve clossing pressure formation hole, slurry moment around is with the high centripetal filling hole of speed, form hypervelocity jet and impact surface, metal sealing district continuously, surface, metal sealing district produces the penetrability along slurry flows to destroy (namely because of jet bombardment, cavitation damages phenomenon), thus causing check valve service life reduction。
Specifically, Fig. 4 illustrates the check valve for high temperature mud membrane pump in correlation technique, with reference to Fig. 4, in the check valve for high temperature mud membrane pump in the related, the upper surface of cone 21 ＇ of valve cone 2 ＇ is provided with guide post 22 ＇, the lower surface of cone 21 ＇ is provided with lower guide and limit and supports 23 ＇, being provided with the lower guide and limit with cone 21 ＇ lower surface in valve seat 1 ＇ support 23 ＇ fairlead 11 ＇ matched and overlap brace rod 12 ＇ of 11 ＇ for fixed guide, fairlead 11 ＇ is internally formed as gathering sill。When valve cone 2 ＇ is in an open position, it is in swiftly flowing slurry when entering in passage 101 ＇, stop due to brace rod 12 ＇, need to stream brace rod 12 ＇, therefore, form eddy region at the rear portion of brace rod 12 ＇, the partially liq in slurry is vaporized because of decompressing effect formation bubble。
Summary of the invention
It is contemplated that one of technical problem solved at least to a certain extent in correlation technique。For this, the present invention propose a kind of for high temperature mud membrane pump without lower guiding cone shaped one-way valve, effectively improve sealing surface and produce the problem that cavitation is damaged。
According to the present invention for high temperature mud membrane pump without lower guiding cone shaped one-way valve, including: valve seat, without lower gathering sill and brace rod in described valve seat, have in described valve seat along described valve seat axially through passage, described passage has lower inlet and upper outlet, the internal face of described passage includes the first section of falling frustoconical sealing surface, and the inner peripheral surface of described valve seat is provided with the guiding gutter extending to described upper outlet from contiguous described first section of falling frustoconical sealing surface；Valve cone, described valve cone supports without lower guide and limit, described valve cone includes cone and guide post, the lower end of described guide post is connected with the upper surface of described cone, extending axially away from described cone of cone described in the upper end edge of described guide post, the side wall surface of described cone has the second section of falling frustoconical sealing surface, described valve cone is located in described passage and removable between closed position and open position along the vertical direction, wherein in described closed position, described second section of falling frustoconical sealing surface contacts with described first section of falling frustoconical sealing surface and described passage is positioned at the region below the lower surface of described cone and forms cavity, at described open position, described second section of falling frustoconical sealing surface and described first section of falling frustoconical sealing surface are separated from。
According to the present invention for high temperature mud membrane pump without lower guiding cone shaped one-way valve, its service life obtains prolongation, and then decreases spare parts consumption。
It addition, can also have following additional technical characteristic for high temperature mud membrane pump without lower guiding cone shaped one-way valve according to the present invention:
According to one embodiment of present invention, the upper edge of described first section of falling frustoconical sealing surface is apart from upper surface first distance of described valve seat, and the lower edge of described first section of falling frustoconical sealing surface is apart from the lower surface second distance of described valve seat。
According to one embodiment of present invention, the internal face of described passage be positioned at described first section of falling frustoconical sealing surface on be cylindrical surface along part above, the lower of described first section of falling frustoconical sealing surface that be positioned at of the internal face of described passage is cylindrical surface along below portion。Thus so that the internal face of passage uniform force diametrically, and the internal face of passage be that cylindrical surface can make slurry pass through more easily。
According to one embodiment of present invention, described passage be positioned at described first section of falling frustoconical sealing surface on along the internal diameter of part above more than the lower internal diameter along below portion being positioned at described first frustoconical sealing surface section of described passage。
According to one embodiment of present invention, described first section of falling frustoconical sealing surface seamlessly transits with the remainder of the internal face of described passage。Thus, the stress decreasing above-mentioned transition position is concentrated, and improves the intensity of valve seat。
According to one embodiment of present invention, described second section of falling frustoconical sealing surface is positioned at the bottom of the side wall surface of described cone, and the top of the side wall surface of described cone is the vertically extending face of cylinder。
According to one embodiment of present invention, the upper surface of described cone is provided with the annular groove around described upper guide post。
According to one embodiment of present invention, the periphery of described annular groove connects along the inclined-plane by extending downwardly and outwardly with the side wall surface of described cone。
According to one embodiment of present invention, the side wall surface of the upper surface of described cone and described cone seamlessly transits, and the lower surface of the side wall surface of described cone and described cone seamlessly transits。
According to one embodiment of present invention, described guide post and described cone are integrally formed。Thus, improve the intensity of valve cone, simplify the structure of valve cone, and make production and the convenient formation of valve cone, and then improve the production efficiency of valve cone。
Accompanying drawing explanation
Fig. 1 is the assembly structure figure without lower guiding taper one-way valve conical valve base for high temperature mud membrane pump according to embodiments of the present invention。
Fig. 2 is the sectional view of the valve seat without lower guiding cone shaped one-way valve for high temperature mud membrane pump according to embodiments of the present invention。
Fig. 3 is the partial sectional view of the valve cone without lower guiding cone shaped one-way valve for high temperature mud membrane pump according to embodiments of the present invention。
Fig. 4 is for the one-way valve structures figure that leads under the tradition of mud diaphragm pump in correlation technique。
The accompanying drawing labelling of the embodiment of the present invention: check valve 100, valve seat 1, valve cone 2, passage 101, lower inlet 102, upper outlet 103, cavity 104, gathering sill 105, cone 21, guide post 22, the upper surface 201 of cone 21, the side wall surface 202 of cone 21, the lower surface 203 of cone 21, first section of falling frustoconical sealing surface 110, the second section of falling frustoconical sealing surface 210, the top 220 of the side wall surface 202 of cone 21, annular groove 204, the first distance H1, second distance H2。
The accompanying drawing labelling (accompanying drawing 4) of check valve in correlation technique: valve seat 1 ＇, valve cone 2 ＇, fairlead 11 ＇, brace rod 12 ＇, cone 21 ＇, upper guide post 22 ＇, lower guide and limit supports 23 ＇。
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings。The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention。
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention。
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic。Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature。In describing the invention, " multiple " are meant that at least two, for instance two, three etc., unless otherwise expressly limited specifically。
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction。For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be。
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact。And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature。Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature。
In the check valve for high temperature mud membrane pump in the related, the upper and lower surface of cone is designed with lower leading line for supporting, and is provided with the lower guide and limit with cone lower surface near the position of lower inlet and supports the fairlead matched and the brace rod for fixed guide set in valve seat。When valve cone is in an open position, it is in swiftly flowing slurry when entering in passage, due to the stop of brace rod, need to stream brace rod, therefore, forming eddy region at the rear portion of brace rod, the partially liq in slurry is vaporized because of decompressing effect formation bubble。
Valve cone is being converted in the process of closed position by open position, flow through the bubble between valve cone and sealing surface of seat crumble and fall under the contention effect of valve clossing pressure formation hole, slurry moment around is with the high centripetal filling hole of speed, formed hypervelocity jet impact continuously surface, metal sealing district (namely, first section of falling frustoconical sealing surface and the second section of falling frustoconical sealing surface), surface, metal sealing district produces the penetrability along slurry flows to destroy because of jet bombardment, thus causing check valve service life reduction。
Referring to Fig. 1 to Fig. 3, check valve 100 according to embodiments of the present invention is described。It should be noted that the present invention mainly illustrates so that the check valve 100 of the present invention is used for high temperature mud membrane pump, but not illustrate that the check valve 100 of the present invention is simply possible to use in high temperature mud membrane pump。
Check valve 100 according to embodiments of the present invention, as shown in Figure 1 to Figure 3, it is possible to including: valve seat 1 and valve cone 2。
Wherein, as in figure 2 it is shown, have the passage 101 that axial (i.e. above-below direction shown in Fig. 2) along valve seat 1 runs through in valve seat 1, passage 101 has lower inlet 102 mouthfuls and upper outlet 103, slurry can enter passage 101 from lower inlet 102, discharges from upper outlet 103。The internal face of passage 101 includes the first section of falling frustoconical sealing surface 110。The inner peripheral surface of valve seat 1 is provided with the guiding gutter 105 extending to upper outlet 103 from contiguous first section of falling frustoconical sealing surface 110, with reference to Fig. 1, namely there is guiding gutter 105 in the upper inner face of passage 101, and guiding gutter 105 can play the effect of guiding when slurry flows through passage 101。Wherein, arrange the purpose of guiding gutter 105 to be in that to make check valve 100 to open rear liquid can to pass through guiding gutter 105 from 102 mouthfuls of efferent tract upper outlets 103 of lower inlet。
With reference to shown in Fig. 1 and Fig. 3, valve cone 2 includes cone 21 and guide post 22, the lower end of guide post 22 is connected with the upper surface 201 of cone 21, extending axially away from cone 21 of the upper end edge cone 21 of guide post 22, that is, with reference to Fig. 3, guide post 22 is formed in the upper surface 201 of cone 21 extending axially upward along cone 21。
In conjunction with Fig. 4 it can be seen that the gathering sill being not provided with in the valve seat 1 of the present invention in correlation technique and brace rod, and the valve cone 2 of the present invention is not provided with lower guide and limit supports。
With reference to Fig. 3 and in conjunction with shown in Fig. 1, the side wall surface 202 of cone 21 has the second section of falling frustoconical sealing surface 210, and the second section of falling frustoconical sealing surface 210 is corresponding with the first section of falling frustoconical sealing surface 110。
As it is shown in figure 1, valve cone 2 is located in passage 101 and removable between closed position (that is, as shown in Figure 1 state) and open position (not shown) along the vertical direction。When valve cone 2 is in the closed position, the second section of falling frustoconical sealing surface 210 contacts with the first section of falling frustoconical sealing surface 110。When cone 21 is in an open position, the second section of falling frustoconical sealing surface 210 and the first section of falling frustoconical sealing surface 110 are separated from。
In other words, when valve cone 2 is in the closed position, valve cone 2 lid is located on valve seat 1, and the first section of falling frustoconical sealing surface 110 and the second section of falling frustoconical sealing surface 210 fit tightly, and slurry cannot pass through the upper outlet 103 of valve seat 1 and discharge。When valve cone 2 is in an open position, slurry can freely by the passage 101 in valve seat 1。
With reference to shown in Fig. 1, when valve cone 2 is in the closed position, passage 101 is positioned at the region below the lower surface 203 of cone 21 and forms cavity 104。
The present invention for high temperature mud membrane pump without under in guiding cone shaped one-way valve 100, eliminate the fairlead on the guide post 22 of cone 21 lower surface and valve seat 1 and brace rod。Therefore, when valve cone 2 is in the closed position, compared to the check valve for high temperature mud membrane pump in correlation technique, passage 101 is positioned at the region of the lower section of the lower surface 203 of cone 21 and forms cavity 104。
When valve cone 2 is in an open position, swiftly flowing slurry obstruction of clear when entering into passage 101 on valve seat 1, significantly reduce the generation of bubble, and then when valve cone 2 is transformed into make position by open position, owing in slurry, bubble is less or do not have bubble, improve owing to the slurry caused of crumbling and fall of bubble impacts the phenomenon of metal sealing district (i.e. the first section of falling frustoconical sealing surface 110 and the second section of falling frustoconical sealing surface 210) continuously with hypervelocity jet。
According to embodiments of the present invention for high temperature mud membrane pump without lower guiding cone shaped one-way valve 100, eliminate the structure such as fairlead and brace rod on the guide post of cone lower surface in the check valve of traditional high temperature mud membrane pump and valve seat, such that it is able to avoid or reduce the bubble that slurry produces when flowing through passage 101；When valve cone 2 is transformed into make position, improve owing to the bubble slurry caused of crumbling and fall impacts the phenomenon (i.e. cavitation damage phenomenon) of metal sealing district (i.e. the first section of falling frustoconical sealing surface 110 and the second section of falling frustoconical sealing surface 210) continuously with hypervelocity jet, extend the service life of check valve 100, decrease spare parts consumption。
In some embodiments of the invention, as in figure 2 it is shown, the upper upper surface first along distance valve seat 1 of the first section of falling frustoconical sealing surface 110 is apart from H1, the lower lower surface second distance H2 along distance valve seat 1 of the first section of falling frustoconical sealing surface 110。In other words, the first section of falling frustoconical sealing surface 110 is located at the middle part on valve seat 1 internal face。Such that it is able to be easy to seal and valve cone 2 is led, and slurry is facilitated to pass through this check valve 100。
Further, as shown in Figure 2, the internal face of passage 101 be positioned at the first section of falling frustoconical sealing surface 110 on be cylindrical surface along part above, the lower of the first section of falling frustoconical sealing surface 110 that be positioned at of the internal face of passage 101 is cylindrical surface along below portion。Thus so that the internal face of passage 101 uniform force diametrically, and the internal face of passage 101 be that cylindrical surface can make slurry pass through more easily。
Further, as in figure 2 it is shown, passage 101 be positioned at the first section of falling frustoconical sealing surface 110 on along the internal diameter of part above more than the lower internal diameter along below portion being positioned at the first section of falling truncated cone face of passage 101。
In some concrete examples of the present invention, as in figure 2 it is shown, the remainder of the internal face of the first section of falling frustoconical sealing surface 110 and passage 101 seamlessly transits。
Specifically, with reference to shown in Fig. 2, the internal face of passage 101 is positioned at the first section of falling frustoconical sealing surface 110 on seamlessly transit along part above and the first section of falling frustoconical sealing surface 110, the internal face of passage 101 is positioned at the lower of the first section of falling frustoconical sealing surface 110 seamlessly transit along below portion and the first section of falling frustoconical sealing surface 110, wherein, described seamlessly transitting can be the modes such as round-corner transition。Thus, the stress decreasing above-mentioned transition position is concentrated, and improves the intensity of valve seat 1, improves the sealing property of check valve。
In some embodiments of the invention, as it is shown on figure 3, the second section of falling frustoconical sealing surface 210 is positioned at the bottom of the side wall surface 202 of cone 21, the top 220 of the side wall surface 202 of cone 21 is the vertically extending face of cylinder。
With reference to shown in Fig. 1, the diameter on the top 220 of the side wall surface 202 of cone 21 with the internal face of passage 101 is positioned at the first section of falling frustoconical sealing surface 110 on roughly the same along the internal diameter of part above, when cone 21 is transformed between make position in the process of conversion at open position, the effect of guiding can be played in the top 220 of the side wall surface 202 of cone 21。
With reference to Fig. 3 and in conjunction with shown in Fig. 1, in some concrete examples of the present invention, cone 21 upper surface is provided with the annular groove 204 around upper guide post 22。
Further, the periphery such as Fig. 3 and in conjunction with annular groove 204 shown in Fig. 1 is connected along the inclined-plane by extending downwardly and outwardly with the side wall surface 202 of cone 21。
It is to say, the upper surface of cone 21 can be the inclined-plane that edge, a periphery downwardly extends, namely this inclined-plane is a taper surface。
Preferably, the upper surface 201 of cone 21 seamlessly transits with the side wall surface 202 of cone 21, and the side wall surface 202 of cone 21 seamlessly transits with the lower surface 203 of cone 21。
In embodiment shown in Fig. 1 and Fig. 3, the upper surface 201 of cone 21 is the inclined-plane tilted, and this inclined-plane can seamlessly transit (mode such as, adopting rounding) with the side wall surface 202 of cone 21。
Similarly, the lower surface 203 of mode and cone 21 that rounding can be passed through in the bottom (i.e. the second section of falling frustoconical sealing surface 210) of the side wall surface 202 of cone 21 seamlessly transits。
Thus, improve the phenomenon that the stress of valve cone 2 is concentrated at least to a certain extent, improve the intensity of valve cone 2。
In a concrete example of the present invention, guide post 22 and cone 21 are integrally formed。Thus, improve the intensity of valve cone 2, simplify the structure of valve cone 2, and make production and the convenient formation of valve cone 2, and then improve the production efficiency of valve cone 2。
It is an object of the invention to easily cause sealing surface cavitation for tradition one-way valve holder structure and run through damage, it is provided that a kind of Novel check valve spool combinative structure, reduce the influence degree that sealing surface is damaged by cavitation, extend check valve service life, reduce spare parts consumption。The technology of the present invention embodiment is as follows: be that valve seat is without lower gathering sill and brace rod, and valve cone supports without lower guide and limit without inner member through hole below sealing surface of seat, and valve cone guiding is with spacing all above sealing surface of seat。
The present invention technical advantage is that: valve seat is the through hole without the dyskinetic component of interior flow field, and ore pulp flows through valve seat will not produce new steam bubble, thus reducing the impact that check valve sealing surface is damaged by cavitation。
The check valve of the present invention includes: valve seat 1 and valve cone 2, and valve cone 2 supports without lower guide and limit, and valve seat is internal without gathering sill and brace rod, the rear portion that spacing guiding when valve cone 2 opens and closes all flows to along slip at sealing surface。
The present invention has the advantages that reducing slip under worst hot case flows through the steam bubble that check valve generation is new, effectively prevents sealing surface from producing cavitation and damages problem；Extend check valve service life, the advantage reducing spare parts consumption。
Additionally, the check valve of the present invention is not limited to worst hot case。
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention。In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example。And, the specific features of description, structure, material or feature can combine in one or more embodiments in office or example in an appropriate manner。Additionally, when not conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out combining and combining by those skilled in the art。
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is illustrative of, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention。
Claims (10)
1. one kind for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that including:
Valve seat, have in described valve seat along described valve seat axially through passage, described passage has lower inlet and upper outlet, the internal face of described passage includes the first section of falling frustoconical sealing surface, and the inner peripheral surface of described valve seat is provided with the guiding gutter extending to described upper outlet from contiguous described first section of falling frustoconical sealing surface；
Valve cone, described valve cone includes cone and guide post, the lower end of described guide post is connected with the upper surface of described cone, extending axially away from described cone of cone described in the upper end edge of described guide post, the side wall surface of described cone has the second section of falling frustoconical sealing surface, described valve cone is located in described passage and removable between closed position and open position along the vertical direction, wherein in described closed position, described second section of falling frustoconical sealing surface contacts with described first section of falling frustoconical sealing surface and described passage is positioned at the region below the lower surface of described cone and forms cavity, at described open position, described second section of falling frustoconical sealing surface and described first section of falling frustoconical sealing surface are separated from。
2. according to claim 1 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterized in that, the upper edge of described first section of falling frustoconical sealing surface is apart from upper surface first distance of described valve seat, and the lower edge of described first section of falling frustoconical sealing surface is apart from the lower surface second distance of described valve seat。
3. according to claim 2 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterized in that, the internal face of described passage be positioned at described first section of falling frustoconical sealing surface on be cylindrical surface along part above, the lower of described first section of falling frustoconical sealing surface that be positioned at of the internal face of described passage is cylindrical surface along below portion。
4. according to claim 3 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterized in that, described passage be positioned at described first section of falling frustoconical sealing surface on along the internal diameter of part above more than the lower internal diameter along below portion being positioned at described first frustoconical sealing surface section of described passage。
5. according to any one of claim 1-4 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that the remainder of the internal face of described first section of falling frustoconical sealing surface and described passage seamlessly transits。
6. according to any one of claim 1-5 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterized in that, described second section of falling frustoconical sealing surface is positioned at the bottom of the side wall surface of described cone, and the top of the side wall surface of described cone is the vertically extending face of cylinder。
7. according to any one of claim 1-6 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that the upper surface of described cone is provided with the annular groove around described upper guide post。
8. according to claim 7 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that the periphery of described annular groove connects along the inclined-plane by extending downwardly and outwardly with the side wall surface of described cone。
9. according to claim 8 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that the side wall surface of the upper surface of described cone and described cone seamlessly transits, and the lower surface of the side wall surface of described cone and described cone seamlessly transits。
10. according to any one of claim 1-9 for high temperature mud membrane pump without lower guiding cone shaped one-way valve, it is characterised in that described guide post and described cone are integrally formed。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410690416.0A CN105697361A (en) | 2014-11-25 | 2014-11-25 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
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| CN201410690416.0A CN105697361A (en) | 2014-11-25 | 2014-11-25 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109236630A (en) * | 2018-07-23 | 2019-01-18 | 泰安联众环保科技有限公司 | A kind of reusable super abrasive diaphragm pump one-way valve |
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| CN101737317A (en) * | 2009-12-09 | 2010-06-16 | 新疆新鑫矿业股份有限公司 | Adjustable-core one-way valve for metering pump |
| CN201787111U (en) * | 2010-09-21 | 2011-04-06 | 浙江凯瑞特阀业有限公司 | Non-return gate valve |
| US20120118406A1 (en) * | 2010-11-16 | 2012-05-17 | Richard Edgeworth | System for Increasing the Efficiency of a Water Meter |
| CN202032132U (en) * | 2011-04-11 | 2011-11-09 | 南通市力沛流体阀业有限公司 | Vertical butt-welded check valve with small-bore main body |
| CN202327262U (en) * | 2011-11-26 | 2012-07-11 | 重庆市智能水表有限责任公司 | Drip-proof check valve |
| CN103062039A (en) * | 2012-12-14 | 2013-04-24 | 陕西中明能源投资有限公司 | Polymer injection pump valve |
| CN204493172U (en) * | 2014-11-25 | 2015-07-22 | 瑞木镍钴管理（中冶）有限公司 | For high temperature mud diaphragm pump without lower guiding cone shaped one-way valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236630A (en) * | 2018-07-23 | 2019-01-18 | 泰安联众环保科技有限公司 | A kind of reusable super abrasive diaphragm pump one-way valve |
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Application publication date: 20160622 |