CN102345742A - Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat - Google Patents
Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat Download PDFInfo
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- CN102345742A CN102345742A CN2010102453760A CN201010245376A CN102345742A CN 102345742 A CN102345742 A CN 102345742A CN 2010102453760 A CN2010102453760 A CN 2010102453760A CN 201010245376 A CN201010245376 A CN 201010245376A CN 102345742 A CN102345742 A CN 102345742A
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Abstract
The invention discloses an isolating valve sealed by a structural ceramic valve clack and a metal elastic valve seat. The isolating valve is mainly composed of a first part (A) and a second part (B), wherein the first part (A) is formed by connecting a valve body (1) with a valve cover (2), and the second part (B) is formed by connecting a ceramic valve seat (3) with a valve rod (6); an upward inlet (15) is arranged by taking the horizontal line of the valve body (1) as a center, and an outlet flow channel (12) downwardly bending relative to the cross center is arranged; a step hole center position of an intersection of the upward inlet (15) and the outlet flow channel (12) is equipped with elastic valve seats (10-14) and elastic valve seats(1-4) arranged on a body; and circular arcs (10-2,14-1,1-4) and sealing surfaces (3-1) of a ceramic valve clack (3) are contacted and closely fitted to form a sealing pair.
Description
Technical field
The invention belongs to valve, relate in particular to the design of the stop valve aspect of structural ceramics flap and metallic elastic valve base sealing.
Background technique
Stop valve is that industrial valve for general use class rank is two, in pipeline, uses a kind of valve that takes second place than gate valve, and the face of use is wide in a large number; This valve open-shut device is the flap of stopper, and sealing surface is the plane or the conical surface, the center line moving linearly of flap longshore current body; The forms of motion of valve rod has elevating lever-type, and (valve rod goes up and down; Handwheel does not go up and down), the rotation of up-down rod-type (handwheel is with the valve rod rotation and lifting, and nut is located on the valve body) is also arranged.Stop valve generally is used for standard-sized sheet and complete shut-down, also can do to regulate and throttling.
Stop valve belongs to forced seal formula valve, so when valve closing, must exert pressure to flap, does not leak with forced seal face.When medium gets into valve pocket by the flap below; The required resistance that overcomes of steering force is the friction of valve rod and filler with by the thrust that pressure produced of medium, the power that the force rate of closing valve is opened valve is big; So it is big that the diameter of valve rod is wanted, otherwise the fault of valve rod bending can take place.In recent years, after occurring from self-packing valve, the MEDIA FLOW of stop valve gets into valve pocket to just changing by the flap top, and at this moment under the pressure medium effect, the power of closing valve is little, and it is big to open the power of valve, and the diameter of valve rod can correspondingly reduce.
When stop valve was opened, the Lift of flap was 25% of nominal diameter～30% o'clock, and it is maximum that flow has reached, and the expression valve has reached fully open position.So the fully open position of stop valve should be decided by the stroke of flap
The advantage of ending
1, simple in structure, make and keep in repair more convenient.
2, working stroke is little, and opening and closing time is short.
3, can under higher pressure, use, for example (about 1.6Mpa～35Mpa) with higher temperature (more than 425 °) work down.
Shown in accompanying drawing 5; Stop valve is build-up wear-resistant damage and higher material such as stainless steel or higher stellite (the domestic No Assets of this Hardmetal materials of hardness on the parallel surface of flap 19 and valve seat 20 usually; Long-term rely on import), two sealing surfaces combine the material different pairing with guarantee valve sealing face can use for a long time with not by dielectric corrosion.
The shortcoming of stop valve
1, fluid resistance is big, and required power is bigger during opening and closing.
2, because the material of common two sealing surfaces is to belong to of the same clan of the same race basically, the adhesive wear tendency is arranged between sealing surface in use, influence sealing effect and working life.
The plane easy scale formation of valve seat when 3, valve length is opened, bad sealing and damage sealing pair when making the pass valve, the result causes valves leakage.
Summary of the invention
The purpose of this invention is to provide a kind of " stop valve of structural ceramics flap and metallic elastic valve base sealing " (the following stop valve that all is called); Elastic seat is the flexible design that the contacts reliability of maintaining valve door sealing for a long time with ceramic flap; The material of the difference pairing of two Sealings not only can reduce the wearing and tearing of valve seat and flap, also can reduce the operation moment of torsion of valve.
In the stop valve of the above-mentioned type of the present invention; The first portion that is connected with valve gap by valve body forms with the second portion that ceramic valve seat is connected with valve rod; With the valve body horizontal line is the ingress that makes progress of the layout one at center and with the reclinate outlet flow in cross center; Step hole central position in this intersection is equipped with an elastic seat, and wherein the one side of arc contacts the sealing pair that also tight applying becomes stop valve with the end face of ceramic flap.
Valve seat is to be known stainless steel; Tubing preferably, sealed end with on the outer radial be arc starting point and terminal point therein the heart roughly 90 ° go up outwards expansion, be curled into a circular arc shaped through processing; What last part combined with valve body is in about circular groove with the cross center portion; Fix with the mode of welding from the plane of groove and the inner radius of valve seat, also can adopt the assembling of known interference, connect (not shown) like roll extrusion or with the form that press machine slowly is pressed into.
Under the closed condition of valve; The characteristic of this known structure is: because inlet/outlet acts on the difference (said pressure is meant the pressure of pipeline internal medium) of the positive pressure area on the flap; Flap is exerted pressure to elastic seat, and active force bears under the situation of flexural stress guaranteeing enough intensity on the lonely face that with the center of circle is the center; This bowing can help to obtain comparatively desirable sealing effect in flexible combination, and the result is significantly reducing of valve closing moment.
Explain a bit; Known structural ceramics is useful on the valve class has successful story; But the similar structural ceramics that is used for the stop valve flap still is not reported, and problem is that structural ceramics fragility is high, is difficult to adapt to like this valve and is realizing with the way of contact of valve rod roof pressure at the sealing surface that closely is similar to rigidity usually.
In addition, sometimes exist the pipe vibration that gas excited in the pipeline, also the Sealing to ceramic valve constitutes huge threat with normal the use.
Overcoming above-mentioned problem is; Except aforesaid elastic seat; More reliably as; With the interconnective valve seat of mandrel on round nut on establish one group of butterfly spring with the two ends that contact of valve rod, except eliminating the vibration, importantly the valve rod head acts on and makes one of auxiliary torque source that flap and elastic seat fit tightly on the spring.
What connect hole on the ceramic flap is to have the tapering consistent mandrel that combines in its bottom; The top of this mandrel is pin-and-hole; Straight pin is connected with the straight trough mouth of valve rod end through this hole, said straight pin in the straight trough mouth of valve rod head for flexibly connecting, and with the hole of mandrel be secure fit.If opening of valves, straight pin overlap with the arc of the cylinder pin hole of valve rod head under the butterfly spring active force, when closing valve; The valve rod head forces in butterfly spring downwards; When ceramic flap contacts with elastic seat, when continuing that rotary valve rod to valve gap is terminal to be contacted with adjusting nut, at this moment valve rod drop to straight pin approach straight trough mouth middle and upper part arc between; The moment of butterfly spring is limited adjusting nut, and adjusting nut is fixed between the end of valve rod and handwheel and valve gap by Cock screw.
No longer be that routine promotes the unique axial force of flap downwards with valve rod when closing valve; But utilize the pressure action of medium of pipeline own on flap; The additional strength that butterfly spring provides; The size of its moment is sealed into principle reaching, and limits the stroke of valve rod the adjusting nut on the upper valve rod, and is fixed on the valve rod by Cock screw.
There is the content that to ignore to be for elastic seat; It is sealed into the face of lonely shape and the one side of ceramic flap contacts for linear; Fouling difficulty on the linear face; This makes seal failure propose new solution for the stupid dirt of normal delay on plane of the valve seat of existing level installation stop valve, even there is trace to exist, also can not existed by adamantine ceramic flap conquassation.
Except above-mentioned factor; The reason of another seal failure of stop valve is metal and metal adhesive wear, and for many years, the research institution of the industry and technician have adopted a large amount of research and test; Though adopted the different hardness and the method for matching of material; But they still are that two sealing same materials infringements of same classification, especially Stainless Steel Valve are even more serious all the time, and this also is that the present invention's pottery flap matches one of major issue that will solve with elastic seat.
The price of Stainless Steel Valve is the several times of plain carbon steel valve; Consider after very long one section effect, also can lose efficacy so have at the sealing surface that processes on the body; This is reluctant to see to the user, keep in repair perhaps unable to do what one wishes, therefore; From saving time and cost; As just on pipeline, not removing the just quick replacing valve seat of valve possibly be exactly the best way, and the sealing that the sealing between valve seat and the valve body can be loaded onto a formed flexible graphite is bad, can pull out from the bottom plane of its internal diameter with drawbench when changing elastic seat.
Under valve is in closed condition; Get into outlet end in order to block medium from inlet; A plane is equipped with gasket seal on next plane of round nut groove down and ceramic flap, and said gasket seal is generally Expanded graphite and adds the manufactured good that stainless steel twines, and uses to adapt at high temperature.
Another kind of embodiments of the invention are the stainless steel stop valve that in aggressive medium, generally uses; Can on the body of valve, directly process elastic seat; Runner place below elastic seat establishes elastic groove; Roughly at the circle centre position of elastic seat, the last one side of elastic groove is justified tangent or close design with the week of elastic seat to the R terminal point of groove.
For the sealing of going up that ends; GB12235-2007 oil, petrochemical industry related industries are with the standard code of steel stop valve and Lift check valve; Wherein 4.2.5 stipulates: the sealing of going up of a taper shape or sphere shape must be arranged on the valve gap, and upper seal support adopts lining to be set on the valve gap.Process time and effort consuming in the above described manner; Except product cost rises, and the working axiality of Assembly part is had relatively high expectations, so that the upward sealing of such valve of market is defective a lot of; Because the quality of last sealing is difficult to discover in the use of valve; Only when changing filler, just find clue under a lot of situation, cause the leakage of high-temperature gas to go out the outer injury of valve thus and happen occasionally that its stake can't neglect to personnel.Moreover common to go up sealing be that the protection filler is avoided unique channel that the high temperature and high pressure fluid gets into when valve is often opened, and will be to the life-span of valve and a challenge of personal safety and lose it.
Draw such fact through assessment and theoretical research and practice; Be processed on the valve rod be processed into a plane on a plane and the valve gap behind the corrosion resistant stainless steel material of sealing part built-up welding, both contact and realize sealing more easily; And the requirement of the valve coaxality of the method after not only part still being assembled is not high; And easy to process, this has realistic meanings to the quality of product that improves stop valve with saving production cost.
Can reach following effect through above-mentioned design
1. the structural ceramics flap has high hardness, superpower decay resistance, the working life that can effectively improve valve.
2. ceramic flap and valve rod are for flexibly connecting, and dismounting is unloaded conveniently, can change after the damage parts.
3. applicability is good, and is cheap for manufacturing cost; Plane and plane contact are adopted in the sealing of going up of valve rod and valve gap, and be less demanding to the component coaxality, and processing is comparatively easily convenient.
4. operational torque is little; Elastic seat is that with contacting of ceramic flap flexible contact, sealing means are that the hydrodynamic pressure in the pipeline promotes, the butterfly spring pretension, and action required power is little.
5. easy to adjust; Need not complicated mechanism, be provided with adjusting nut, unclamp and suitably to regulate the appropriate location of required moment between ceramic flap and the elastic seat in the valve rod upper end.
Description of drawings
In above-mentioned figure, then represent it is identical effect if any identical label.
Diagram major part sign indicating number number is: A is the attachment portion of valve body and valve gap, B ceramic valve seat and valve rod attachment portion; Wherein sequence number be respectively 1, valve body 2, valve gap 3, flap 4, filler 5, round nut 6, valve rod 7, butterfly spring 8, straight pin 9, mandrel 10, elastic seat 1 11, handwheel 12, outlet 13, Expanded graphite seal ring 14, elastic seat 2 15, inlet 16, adjusting nut 17, Cock screw 18 compression springs.
Of the present invention these are described in detail through figs with other purpose advantage.
Fig. 1 is the stop valve sectional view of structural ceramics flap of the present invention and metallic elastic valve base sealing.
Fig. 2 is the sectional view of amplification of the flap structure member of Fig. 1.
Fig. 3 is the sectional view of amplification of the elastic seat structure member of Fig. 1.
Fig. 4 is the sectional view of amplification of a kind of detachable elastic seat structure member of Fig. 1.
Fig. 5 is like a kind of sectional view that on the present invention such as Stainless Steel Valve body, is processed into the sealing surface of elastic seat of Fig. 1
Fig. 6 is the sectional view of commercially available stop valve.
Embodiment
The stop valve that the present invention is above-mentioned; Like Fig. 1; The A of first portion that is connected with valve gap 2 by valve body 1 forms with the second portion B that ceramic valve seat 3 is connected with valve rod 6; With valve body 1 horizontal line is inlet 15 places that make progress of one of center arrangement and with the reclinate outlet flow 12 in cross center; The elastic seat 1-4 that is equipped with an elastic seat 10,14 and Stainless Steel Valve directly to process on the body at valve in the step hole central position of this intersection, wherein the one side of arc 10-2,14-1,1-4 contacts with the Transverse plane 3-1 of ceramic flap 3 and tight applying becomes the sealing pair of stop valve.
Please referring to Fig. 2; Connect in the ceramic flap 3 is to have tapering 9-1 in its bottom to combine consistent be mandrel 9; The hole 6-5 that the top of this mandrel 9 places valve rod 6 not hold wherein has a cylinder pin hole 9-3, and straight pin 8 is connected with vertical straight trough mouth 6-1 of valve rod 6 ends through this hole 9-3; Said straight pin 8 is that the hole of flexible connection and mandrel 9-3 is a secure fit in vertical straight trough mouth 6-1 of valve rod head.
If opening of valves; Butterfly spring 7 contacts with valve rod 6 end plane 6-2 through compression spring 18; Straight pin 8 overlaps with the arc of 6-1, when closing valve, forces in butterfly spring 7 downwards at the active force lower valve rod 6 head 6-2 of handwheel 11; And act on the ceramic flap 3 through round nut 5; As ceramic flap 3 and elastic seat 10-2,14-1, when 1-4 contacts, when continuing the terminal 2-2 of rotary valve rod 6 to valve gap and contacting with adjusting nut 11, valve rod 6 drops between the 6-3 that straight pin 8 approaches vertical straight trough mouth 6-1 middle and upper part arc at this moment.
And mandrel 9 interconnective valve seats 3 on round nut 5 on and valve rod 6 establish one group of butterfly spring 7 with the two ends that contact between the pad 18; Except eliminating the vibration, importantly valve rod 6 heads act on and make one of auxiliary torque source that ceramic flap 3 and elastic seat 10,14 fit tightly on the butterfly spring 7.
The moment of butterfly spring 7 is limited adjusting nut 16, and said adjusting nut 16 is fixed between the end 2-2 of valve rod 6 and handwheel 11 and valve gap 2 by Cock screw 17.
Under valve is in closed condition; Get into outlet end in order to block medium from inlet; In the hole of the 3-2 of round nut 5 next plane of boss 5-1 and ceramic flap 3 down, be equipped with stuffing box packing 4; Be the reliability of making every effort to seal, the lower end of filler 4 is designed to cone angle 4-1, inside and outside conical surface formation and 3-3,9-1 be in contact with one another and through the screw thread 9-2 spinning that round nut 5 matches become the sealing situation, to prevent that medium is from entrance point 15 flow inlet and outlet ends 12; Filler 4 is generally the manufactured good of Expanded graphite, uses to adapt at high temperature.
Become a round platform to have smooth plane 6-4 in the upper end that valve rod 6 is connected with mandrel 9; 2-1 contact on the state bottom flange 2 that valve leaves is flowed out with the blocking-up medium; Can be to protect filler to avoid the impact of high-temperature, high pressure fluid for a long time on the one hand, the more important thing is to guarantee that the staff can not provide safe and reliable safeguard because of leaking outside of medium when changing stuffing box packing again.
As shown in Figure 3; Elastic seat 10 sealed ends are on the outer radial to be the starting point 10-1 of arc and roughly 90 ° of upward outwards expansions at its center of terminal point 10-4; Be curled into a circular arc shaped through processing; What last part combined with valve body is in about circular groove 1-1 with the cross center portion, fixes with the mode of welding from the plane of groove 1-2 and the inner radius of elastic seat 10.
Fig. 4 is a kind of dismountable elastic seat 14; Available bar or thick-wall tube shape; Internal diameter is that the elasticity notch 14-2 of an arc extends to external diameter one side; Sealed end with the arc of 14-2 be expand on the outward direction of center 14-1 and with elastic seat 14 corresponding to external diameter 14-4, the horizontal line at bottom surface and valve body 1 runner center remains basically stable, below the 14-2 for vertically with hole 1-3 be roughly about 50 °, 13 contacted with the Expanded graphite seal ring, help making it to be compressed into sealing situation conical surface 14-5; External diameter 14-3 and 14-4 are close basically, the 1-2 in bottom cylindrical 14-6 and the valve body 1,1-3 hole cooperate the fixedly shape that is assembled into of generally selecting interference.
That shown in Figure 5 is a kind of R shape elastic seat 1-4 that on body 1, directly processes for Stainless Steel Valve; Runner place thereunder is provided with elastic groove 1-5; Roughly at the circle centre position of R1-4, the one side 1-6 of groove and the week of R1-4 are justified tangent or close design to the R terminal point of this groove.
The stop valve of structural ceramics flap and metallic elastic valve base sealing break through combination that traditional metal and metal pairing since the beginning are arranged and valve rod and valve gap the plane on seal; The change of its structure makes both contacts realize sealing more easily; And the requirement of the valve coaxality of the method after not only part still being assembled is not high; And easy to process, this all is significant with saving production cost to the quality of product that improves stop valve.
Specification so far explained and finished, and has more improvement and raising for reading and understanding those skilled in the art, and technological points of the present invention only with claims as qualification.
Claims (9)
1. the stop valve of structural ceramics flap and metallic elastic valve base sealing; The first portion (A) that wherein mainly is connected with valve gap (2) by valve body (1) forms with the second portion (B) that ceramic valve seat (3) is connected with valve rod (6); With valve body (1) horizontal line is that inlet (15) that one of center arrangement makes progress is located and with the reclinate outlet flow in cross center (12); The elastic seat (1-4) that is equipped with an elastic seat (10,14) and to process from body in the step hole central position of this intersection, wherein arc (10-2,14-1,1-4) contacts with the sealing surface (3-1) of ceramic flap (3) and close applying becomes sealing pair.
2. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: what connect hole (3-4) on the ceramic flap (3) is to have tapering (9-1) the consistent mandrel (9) that combines in its bottom; The top of this mandrel (9) is cylinder pin hole (9-3); Straight pin (8) is connected with vertical straight trough mouth (6-1) of valve rod (6) end through this hole (9-3); Said straight pin (8) in vertical straight trough mouth (6-1) of valve rod head for flexibly connecting, and and the hole of mandrel (9-3) be secure fit.
3. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: elastic seat (10) sealed end with on the outer radial be arc starting point (10-1) and terminal point (10-4) its center roughly 90 ° go up outwards expansion; Be curled into a circular arc shaped through processing; What last part combined with valve body (1) is in about circular groove (1-1) with the cross center portion, fixes with the mode of welding from the plane of groove (1-2) and the inner radius of elastic seat 10.
4. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: a kind of detachable elastic seat (14); Internal diameter is that the elasticity notch (14-2) of an arc extends to a side; Sealed end with the arc of (14-2) be expand on the outward direction of center (14-1) and with the corresponding to external diameter of Elastic valve clack (14-4); The horizontal line at bottom surface and valve body (1) runner center remains basically stable; (14-2) for vertical with hole (1-3) roughly about 50 °, contacted with Expanded graphite seal ring (13), help making it to be compressed into the conical surface (14-5) that seals situation, (1-2, the 1-3) hole in bottom cylindrical (14-6) and the valve body (1) cooperate the fixedly shape that is assembled into of generally selecting interference.
5. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: a kind of R shape elastic seat (1-4) that on body (1), directly processes for Stainless Steel Valve; Runner place thereunder is provided with elastic groove (1-5); Roughly at the circle centre position of R (1-4), the one side of groove (1-6) is justified tangent or close design with the week of R (1-4) to the R terminal point of this groove.
6. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: and the two ends of the last plane contact of the lower plane of round nut (5) and pad (18) establish one group of butterfly spring (7), and (1-4) on (10-2), (14-1) and the valve body (1) on valve rod (6) sealing surface (3-1) that butterfly spring (7) active force made ceramic flap (3) when head moved downward and the elastic seat (10,14) fits tightly.
7. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: in the hole of (3-2) of round nut (5) next plane of boss (5-1) and ceramic flap (3) down, be equipped with stuffing box packing (4); The lower end of filler 4 is designed to cone angle (4-1), and screw thread (9-2) spinning that the inside and outside conical surface forms with (3-3,9-1) and is in contact with one another, also matches through round nut (5) becomes sealing situation.
8. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing; It is characterized in that: the upper end that valve rod (6) is connected with mandrel (9) becomes a round platform to have smooth plane (6-4), and (2-1) contact on the state bottom flange (2) that valve leaves is flowed out with the blocking-up medium.
9. the stop valve of structural ceramics flap according to claim 1 and metallic elastic valve base sealing is characterized in that: adjusting nut (16) is sleeved between the end (2-2) of top and handwheel (11) and valve gap (2) of valve rod (6), and is fixing by Cock screw (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102453760A CN102345742A (en) | 2010-07-29 | 2010-07-29 | Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102453760A CN102345742A (en) | 2010-07-29 | 2010-07-29 | Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345742A true CN102345742A (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102453760A Pending CN102345742A (en) | 2010-07-29 | 2010-07-29 | Isolating valve sealed by structural ceramic valve clack and metal elastic valve seat |
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| CN (1) | CN102345742A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595508A (en) * | 2015-01-23 | 2015-05-06 | 吴振庭 | Valve sealing device |
| CN104763817A (en) * | 2015-03-20 | 2015-07-08 | 苏州福润机械有限公司 | Spring pressing type valve seat for stop valve |
| CN104763811A (en) * | 2015-03-25 | 2015-07-08 | 苏州福润机械有限公司 | Novel valve having filtering function |
| CN106439163A (en) * | 2016-12-09 | 2017-02-22 | 无锡银联齿轮传动机械有限公司 | Electric push rod valve |
| CN106641436A (en) * | 2016-12-09 | 2017-05-10 | 无锡银联齿轮传动机械有限公司 | Hinged connection structure for push rod and valve plate of electric push rod valve |
| CN108953624A (en) * | 2018-08-13 | 2018-12-07 | 四川大学 | Hauberk formula flap valve |
| CN109185477A (en) * | 2018-10-31 | 2019-01-11 | 超达阀门集团股份有限公司 | A kind of shockproof anti-sticking regulating valve of harshness operating condition |
| CN109812588A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | A kind of elastic conical surface valve base sealing structure of shut-off valve |
| CN110242774A (en) * | 2019-07-19 | 2019-09-17 | 贾培育 | A kind of bias minute-pressure damage check-valves |
| CN114534867A (en) * | 2022-03-24 | 2022-05-27 | 辽宁五寰特种材料与智能装备产业技术研究院有限公司 | Automatic ball feeding device of mill |
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2010
- 2010-07-29 CN CN2010102453760A patent/CN102345742A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595508A (en) * | 2015-01-23 | 2015-05-06 | 吴振庭 | Valve sealing device |
| CN104763817A (en) * | 2015-03-20 | 2015-07-08 | 苏州福润机械有限公司 | Spring pressing type valve seat for stop valve |
| CN104763811A (en) * | 2015-03-25 | 2015-07-08 | 苏州福润机械有限公司 | Novel valve having filtering function |
| CN106439163A (en) * | 2016-12-09 | 2017-02-22 | 无锡银联齿轮传动机械有限公司 | Electric push rod valve |
| CN106641436A (en) * | 2016-12-09 | 2017-05-10 | 无锡银联齿轮传动机械有限公司 | Hinged connection structure for push rod and valve plate of electric push rod valve |
| CN106439163B (en) * | 2016-12-09 | 2019-02-15 | 无锡银联齿轮传动机械有限公司 | Electric pushrod valve |
| CN109812588A (en) * | 2017-11-22 | 2019-05-28 | 中核苏阀科技实业股份有限公司 | A kind of elastic conical surface valve base sealing structure of shut-off valve |
| CN108953624B (en) * | 2018-08-13 | 2023-08-15 | 四川大学 | Lock nail type flap valve |
| CN108953624A (en) * | 2018-08-13 | 2018-12-07 | 四川大学 | Hauberk formula flap valve |
| CN109185477A (en) * | 2018-10-31 | 2019-01-11 | 超达阀门集团股份有限公司 | A kind of shockproof anti-sticking regulating valve of harshness operating condition |
| CN109185477B (en) * | 2018-10-31 | 2024-09-03 | 超达阀门集团股份有限公司 | Shock-proof anti-blocking regulating valve for severe working conditions |
| CN110242774A (en) * | 2019-07-19 | 2019-09-17 | 贾培育 | A kind of bias minute-pressure damage check-valves |
| CN114534867A (en) * | 2022-03-24 | 2022-05-27 | 辽宁五寰特种材料与智能装备产业技术研究院有限公司 | Automatic ball feeding device of mill |
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Application publication date: 20120208 |