Two-piece type ceramic ball valve
阅读说明：本技术 一种两片式陶瓷球阀 (Two-piece type ceramic ball valve ) 是由 刘国庆 李学海 闫文霞 于 2020-06-22 设计创作，主要内容包括：本发明提供了一种两片式陶瓷球阀,包括阀体,所述阀体的一侧活动安装有侧盖,且阀体与侧盖之间的边角位置活动安装有螺栓,所述阀体的上端外表面活动安装有固定座,且固定座的上端外表面中间位置活动安装有板座,所述板座远离侧盖的一侧固定安装有扳杆,所述侧盖的一侧与阀体远离侧盖的一侧均固定安装有法兰盘,所述阀体的内部活动安装有阀球,且阀球的上端外表面开设有卡槽,所述卡槽的内部贯穿有阀杆,该两片式陶瓷球阀可以在密封座受到损耗时将密封座向阀球方向挤压,确保球阀的密封性,避免发生泄漏,便于对阀球表面附着的污垢进行清理,降低对水质的影响,球阀开关后能够自行锁定,有效避免因误触扳杆而影响球阀的正常工作。(The invention provides a two-piece ceramic ball valve, which comprises a valve body, wherein one side of the valve body is movably provided with a side cover, a corner position between the valve body and the side cover is movably provided with a bolt, the outer surface of the upper end of the valve body is movably provided with a fixed seat, the middle position of the outer surface of the upper end of the fixed seat is movably provided with a plate seat, one side of the plate seat far away from the side cover is fixedly provided with a pull rod, one side of the side cover and one side of the valve body far away from the side cover are both fixedly provided with flange plates, a valve ball is movably arranged in the valve body, the outer surface of the upper end of the valve ball is provided with a clamping groove, a valve rod penetrates through the clamping groove, the two-piece ceramic ball valve can extrude the sealing seat towards the valve ball when the sealing seat is damaged, the sealing performance of the ball valve is ensured, the ball valve can be automatically locked after being opened and closed, and the normal work of the ball valve is effectively prevented from being influenced by mistakenly touching the pull rod.)
1. The two-piece ceramic ball valve comprises a valve body (1) and is characterized in that one side of the valve body (1) is movably provided with a side cover (2), a bolt (3) is movably arranged at a corner position between the valve body (1) and the side cover (2), a fixing seat (4) is movably arranged on the outer surface of the upper end of the valve body (1), a plate seat (5) is movably arranged at the middle position of the outer surface of the upper end of the fixing seat (4), a pull rod (6) is fixedly arranged at one side, far away from the side cover (2), of the plate seat (5), a flange plate (7) is fixedly arranged at one side of the side cover (2) and one side, far away from the side cover (2), of the valve body (1), a valve ball (8) is movably arranged inside the valve body (1), a clamping groove (9) is formed in the outer surface of the upper end, valve rod (10) run through in the inside of fixing base (4) and plate holder (5), passageway (11) have been seted up between side cap (2), valve ball (8) and ring flange (7), the equal movable mounting in both sides of valve ball (8) has seal receptacle (12), and one side movable mounting that valve ball (8) were kept away from in seal receptacle (12) has sealing washer (13), the surface of sealing washer (13) is seted up flutedly (14), and the inside movable mounting of recess (14) has leaf spring (16), one side surface that sealing washer (13) are close to recess (14) is equipped with sealing tongue (15) all around, sealing tongue (15) wrap up leaf spring (16).
2. The two-piece ceramic ball valve according to claim 1, wherein the fixing seat (4) is provided with a positioning hole (18) at one side of the outer surface of the upper end and at the rear end, a positioning pin (19) penetrates through the positioning hole (18), a through hole (20) is formed at one side of the outer surface of the upper end of the plate seat (5), a movable rod (21) penetrates through the through hole (20), a magnet (22) is fixedly mounted on the outer surface of the lower end of the movable rod (21), and a limiting block (23) is fixedly mounted between the magnet (22) and the outer surface of the movable rod (21).
3. The two-piece ceramic ball valve according to claim 2, wherein the opening diameter of the through hole (20) is smaller than the diameter of the stopper (23), a spring (24) is movably installed between the outer surface of the lower end of the stopper (23) and the through hole (20), the spring (24) is sleeved on the outer surface of the magnet (22), and the spring (24) is made of plastic.
4. A two-piece ceramic ball valve according to claim 1, wherein a scraper (17) is fixedly mounted on the inner surface of the sealing seat (12), and the scraper (17) is inclined toward the valve ball (8) and contacts with the valve ball (8).
5. The two-piece ceramic ball valve according to claim 1, wherein a filter screen (25) is movably mounted on one side of the inside of the channel (11), a threaded groove (26) is formed in the outer surface of the filter screen (25), and the filter screen (25) is made of metal.
6. The two-piece ceramic ball valve according to claim 1, wherein a movable shaft (27) is movably mounted at the middle position of the outer surface of one side of the filter screen (25), a helical blade (28) is fixedly mounted on the outer surface of the movable shaft (27), and a cleaning brush (29) is arranged on the outer surface of one side of the helical blade (28) close to the filter screen (25).
Technical Field
The invention relates to the technical field of ball valves, in particular to a two-piece ceramic ball valve.
Background
The two-piece ball valve and the gate valve belong to the same type of valve, and are different in that a closing part of the two-piece ball valve and the gate valve is a ball body, and the ball body rotates around the center line of the valve body to achieve the opening and closing of the valve;
the ceramic material has small deformation, much higher bonding strength than metal, small crystal ion radius of the ceramic material, high ionic electricity price and large coordination number, which determine the high tensile strength, compressive strength, elastic modulus, hardness and the like of the ceramic material, wear-resistant and corrosion-resistant parts are manufactured by using the wear resistance and corrosion resistance of the ceramic to replace metal materials, which is one of important development directions of high-tech material markets in recent years, and the ceramic ball valve is a high-tech product which is independently researched and developed by scientific structural optimization design by using the characteristics of corrosion resistance, wear resistance and high hardness of the structural ceramic of a new material;
however, the existing two-piece ceramic ball valve has certain defects: 1. the mutual friction between the valve ball and the sealing seat can generate loss, so that the sealing performance of the sealing seat on the valve ball is reduced; 2. dirt is attached to the surface of the valve ball, the dirt is difficult to clean, and the water quality is influenced after long-term accumulation; 3. a trigger lever for controlling the opening and closing of the ball valve is not provided with a locking mechanism, so that people easily touch the trigger lever by mistake in a working environment with strong personnel concentration and mobility to cause unnecessary opening and closing of the ball valve.
Disclosure of Invention
The invention aims to provide a two-piece ceramic ball valve which can extrude a sealing seat towards a valve ball when the sealing seat is damaged, ensure the sealing performance of the ball valve, avoid leakage, facilitate cleaning of dirt attached to the surface of the valve ball, reduce the influence on water quality, automatically lock after the ball valve is opened and closed, and effectively avoid the influence on the normal work of the ball valve due to mistaken touch of a pull rod.
The invention provides a two-piece ceramic ball valve, which comprises a valve body, wherein a side cover is movably arranged on one side of the valve body, bolts are movably arranged at the corner positions between the valve body and the side cover, a fixed seat is movably arranged on the outer surface of the upper end of the valve body, a plate seat is movably arranged in the middle position of the outer surface of the upper end of the fixed seat, a pull rod is fixedly arranged on one side of the plate seat away from the side cover, flange plates are fixedly arranged on one side of the side cover and one side of the valve body away from the side cover, a valve ball is movably arranged in the valve body, a clamping groove is formed in the outer surface of the upper end of the valve ball, a valve rod penetrates through the clamping groove, the valve rod penetrates through the fixed seat and the plate seat, a channel is formed among the side cover, the valve ball and the flange plates, sealing seats, the outer surface of the sealing ring is provided with a groove, a plate spring is movably arranged in the groove, a sealing tongue is arranged on the periphery of the outer surface of one side, close to the groove, of the sealing ring and wraps the plate spring, the valve body is connected with the side cover and fixed with the side cover through a bolt, the ball valve is connected with a pipeline through a flange plate, the trigger lever is used for rotating the plate seat to rotate clockwise by ninety degrees, the plate seat drives the valve ball to rotate clockwise by ninety degrees in the valve body through the valve rod, so that the opening of the valve ball is communicated with the channel, the ball valve is opened and then is reset through the trigger lever driving the valve ball to rotate anticlockwise by ninety degrees, the channel can be blocked by the solid surface of the valve ball, the ball valve is closed, and the valve ball can continuously rub with the sealing seats on two sides after being rotated for multiple times, so that the sealing seats are, the sealing seat is pushed towards the valve ball, the sealing tongue is utilized to wrap the plate spring, the plate spring is prevented from being separated from a groove on a sealing ring when being unfolded, tight connection between the valve ball and the sealing seat is ensured, the sealing performance of the valve ball is ensured, and the leakage of the ball valve is prevented. The damage to the ball valve caused by overhigh internal pressure of the valve cavity is avoided, and the safety of the ball valve in use is improved.
Preferably, the locating hole has all been seted up to upper end surface one side and the rear end position of fixing base, and the inside of locating hole runs through there is the locating pin, the through-hole has been seted up to upper end surface one side of board seat, the inside of through-hole runs through there is the movable rod, and the lower extreme external surface fixed mounting of movable rod has magnet, fixed mounting has the stopper between magnet and the movable rod surface.
Press the movable rod downwards, make movable rod and magnet run through whole through-hole, magnet keeps same level with the junction of fixing base and plate seat with the junction of locating pin this moment, then rotate the plate seat, make magnet and locating pin dislocation, the locating pin loses the magnetic force and attracts during whereabouts to the locating hole this moment, after the rotatory ninety degrees of plate seat, the ball valve is opened, the through-hole is aligned with another locating hole this moment, magnetic force through magnet attracts, make the locating pin stretch out the locating hole and run through to the inside of through-hole, carry out the relative positioning through the locating pin between to fixing base and the plate seat, avoid the mistake to touch the pull rod and lead to the abnormal switch of ball valve.
Preferably, the opening diameter of through-hole is less than the diameter of stopper, movable mounting has the spring between the lower extreme surface of stopper and the through-hole, and the spring cup joints in the surface of magnet, the spring is the plastics material.
Carry out spacingly through the stopper to the movable rod, avoid movable rod and through-hole to take place to break away from, when pressing the movable rod, spring compression deformation removes the back of pressing to the movable rod, restores to the throne through the spring and upwards pops out the through-hole a festival with the movable rod, ensures that the through-hole bottom leaves enough space and lets the locating pin penetrate, and the spring adoption is the plastics material, avoids producing inter attraction between its and the magnet.
Preferably, a scraper is fixedly installed on the inner surface of the sealing seat, and the scraper inclines towards the valve ball and is in contact with the valve ball.
When the valve ball rotates, the valve ball can be in contact with the scraper inside the sealing seat, dirt attached to the surface of the valve ball can be scraped off by the scraper, and the influence on water quality caused by accumulation of the dirt on the surface of the valve ball is avoided.
Preferably, there is a filter screen inside one side movable mounting of passageway, and the surface of filter screen has seted up the thread groove, the filter screen is the metal material.
Utilize the thread groove to fix the filter screen in the inside of passageway through threaded connection's mode, the convenience is installed the dismantlement to the filter screen, can filter the rivers through the ball valve through the filter screen, avoids inside impurity gets into the ball valve, causes the ball valve to block up and leads to the fact destruction even to the ball valve.
Preferably, one side surface intermediate position movable mounting of filter screen has the loose axle, and the fixed surface of loose axle installs helical blade, helical blade is close to one side surface of filter screen and is equipped with the cleaning brush.
Rivers produce thrust to the helical blade when passageway inside flows for helical blade utilizes the loose axle to rotate, and its cleaning brush and the filter screen contact that is close to the filter screen when helical blade is rotatory can be with attached to the impurity brush on filter screen surface down through the cleaning brush, avoids impurity to block up the filter screen, ensures that the inside rivers of passageway are smooth and easy.
Has the advantages that:
1. when the valve ball rotates for many times, the valve ball continuously generates friction with the sealing seats on the two sides, so that the loss of the sealing seats is caused, the plate spring is unfolded, the sealing seats are pushed towards the valve ball, the tight connection between the valve ball and the sealing seats is ensured, the sealing performance of the valve ball is ensured, and the leakage of the valve ball is prevented, when water flow passing through the valve ball is high-temperature liquid, after the valve ball 8 is closed, the channel 11 on one side is filled with the liquid, the channel 11 on the other side is drained, liquid residues exist in a valve cavity formed between the closed valve ball 8 and the valve body 1, the liquid residues can generate a large amount of steam in the ball valve to cause the overlarge internal pressure of the valve cavity, at the moment, the sealing seat 12 can be pushed through steam pressure, the plate spring 16 is compressed and deformed by the extrusion of the sealing seat 12, so that the sealing seat 12 displaces towards the direction far away from the valve ball 8, and a gap, the high pressure of steam in the valve cavity can be discharged through the gap, so that the valve ball 8 is prevented from being damaged due to overhigh pressure in the valve cavity, and the safety of the ball valve in use is improved;
2. the movable rod is pressed downwards to enable the movable rod and the magnet to penetrate through the whole through hole, the joint of the magnet and the positioning pin and the joint of the fixed seat and the plate seat are kept at the same level, then the plate seat is rotated to enable the magnet and the positioning pin to be staggered, the positioning pin loses magnetic attraction and falls into the positioning hole, when the plate seat rotates ninety degrees, the ball valve is opened, the through hole is aligned with the other positioning hole, the positioning pin extends out of the positioning hole and penetrates into the through hole through the magnetic attraction of the magnet, the relative positioning between the fixed seat and the plate seat is carried out through the positioning pin, the abnormal opening and closing of the ball valve caused by mistakenly touching the pull rod is avoided, the movable rod is limited through the limiting block, the separation of the movable rod and the through hole is avoided, when the movable rod is pressed, the spring is compressed and deformed, after the pressing of the movable rod, enough space is reserved at the bottom of the through hole for the penetration of the positioning pin, and the spring is made of plastic materials, so that the mutual attraction between the spring and the magnet is avoided;
3. when the valve ball rotates, the valve ball can be in contact with the scraper inside the sealing seat, dirt attached to the surface of the valve ball can be scraped off by the scraper, and the influence on water quality caused by accumulation of the dirt on the surface of the valve ball is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a view of the seal ring of the present invention in combination with a leaf spring;
FIG. 4 is a schematic view of the seal ring structure of the present invention;
FIG. 5 is a view of the valve ball of the present invention in combination with a sealing seat;
FIG. 6 is a view of the fixing base and the positioning hole of the present invention;
FIG. 7 is a view of the combination of the fixing base and the plate base;
FIG. 8 is a view of the combination of the screen of the present invention and the spiral vane;
fig. 9 is a view of the combination of the spiral blade and the cleaning brush of the present invention.
Description of reference numerals:
1. a valve body; 2. a side cover; 3. a bolt; 4. a fixed seat; 5. a plate base; 6. a lever; 7. a flange plate; 8. a valve ball; 9. a card slot; 10. a valve stem; 11. a channel; 12. a sealing seat; 13. a seal ring; 14. a groove; 15. a sealing tongue; 16. a plate spring; 17. a scraper; 18. positioning holes; 19. positioning pins; 20. a through hole; 21. a movable rod; 22. a magnet; 23. a limiting block; 24. a spring; 25. filtering with a screen; 26. a thread groove; 27. a movable shaft; 28. a helical blade; 29. a cleaning brush.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used 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, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 9, the present invention provides a technical solution:
a two-piece ceramic ball valve comprises a valve body 1, wherein one side of the valve body 1 is movably provided with a side cover 2, a bolt 3 is movably arranged at a corner position between the valve body 1 and the side cover 2, the outer surface of the upper end of the valve body 1 is movably provided with a fixing seat 4, the middle position of the outer surface of the upper end of the fixing seat 4 is movably provided with a plate seat 5, one side of the plate seat 5, which is far away from the side cover 2, is fixedly provided with a pull rod 6, one side of the side cover 2 and one side of the valve body 1, which is far away from the side cover 2, are fixedly provided with a flange 7, the valve body 1 is movably provided with a valve ball 8, the outer surface of the upper end of the valve ball 8 is provided with a clamping groove 9, the inside of the clamping groove 9 is penetrated with a valve rod 10, the valve rod 10 is penetrated through the insides of the fixing seat 4, and one side of the sealing seat 12 far away from the valve ball 8 is movably provided with a sealing ring 13, the outer surface of the sealing ring 13 is provided with a groove 14, and the inside of the groove 14 is movably provided with a plate spring 16, firstly, the valve body 1 is connected with the side cover 2, the valve body 1 and the side cover 2 are fixed through a bolt 3, then, the ball valve is connected with a pipeline through a flange 7, the plate seat 5 is rotated by a trigger lever 6 to rotate clockwise ninety degrees, the plate seat 5 drives the valve ball 8 to rotate clockwise ninety degrees in the valve body 1 through a valve rod 10, so that the opening of the valve ball 8 is communicated with a channel 11, the ball valve is opened, the valve ball 8 can be reset through the trigger lever 6 driving the valve ball 8 to rotate anticlockwise ninety degrees, the channel 11 can be blocked by utilizing the solid surface of the valve ball 8, the ball valve is closed, when the valve ball 8 rotates for multiple times, friction is continuously generated with the sealing seats 12, at the moment, the plate spring 16 is unfolded to push the sealing seat 12 towards the valve ball 8, so that tight connection between the valve ball 8 and the sealing seat 12 is ensured, the sealing performance at the position of the valve ball 8 is ensured, leakage of the ball valve is prevented, when water flow passing through the ball valve is high-temperature liquid, after the valve ball 8 is closed, the channel 11 on one side is filled with the liquid, the channel 11 on the other side is drained of the liquid, liquid residues exist in a valve cavity formed between the closed valve ball 8 and the valve body 1, the liquid residues can generate a large amount of steam inside the ball valve to cause overlarge pressure inside the valve cavity, the sealing seat 12 can be pushed by steam pressure at the moment, the plate spring 16 is compressed and deformed by the extrusion of the sealing seat 12, so that the sealing seat 12 is displaced towards the direction far away from the valve ball 8, a gap is generated between the sealing seat 12 and the valve ball 8, the high pressure of the steam inside the valve cavity can be discharged through the gap, and, the safety of the ball valve in use is improved;
as an embodiment of the present invention, the fixing seat 4 is provided with positioning holes 18 at both the upper end outer surface side and the rear end position, positioning pins 19 penetrate through the positioning holes 18, the plate seat 5 is provided with a through hole 20 at the upper end outer surface side, a movable rod 21 penetrates through the through hole 20, a magnet 22 is fixedly mounted on the lower end outer surface of the movable rod 21, a limit block 23 is fixedly mounted between the magnet 22 and the outer surface of the movable rod 21, the movable rod 21 is pressed downward to make the movable rod 21 and the magnet 22 penetrate through the entire through hole 20, the connection between the magnet 22 and the positioning pins 19 and the connection between the fixing seat 4 and the plate seat 5 are maintained at the same level, then the plate seat 5 is rotated to make the magnet 22 and the positioning pins 19 dislocate, the positioning pins 19 lose magnetic attraction and fall into the positioning holes 18, and when the plate seat 5 rotates ninety degrees, the ball, at this moment, the through hole 20 is aligned with the other positioning hole 18, and the positioning pin 19 extends out of the positioning hole 18 and penetrates into the through hole 20 through the magnetic attraction of the magnet 22, so that the positioning pin 19 is used for relatively positioning the fixed seat 4 and the plate seat 5, and the condition that the ball valve is abnormally switched due to mistaken touch of the trigger lever 6 is avoided.
As an embodiment of the present invention, the opening diameter of the through hole 20 is smaller than the diameter of the stopper 23, a spring 24 is movably installed between the outer surface of the lower end of the stopper 23 and the through hole 20, the spring 24 is sleeved on the outer surface of the magnet 22, the spring 24 is made of plastic, the stopper 23 is used to limit the position of the movable rod 21, so as to prevent the movable rod 21 from being separated from the through hole 20, when the movable rod 21 is pressed, the spring 24 is compressed and deformed, after the pressing of the movable rod 21 is released, the movable rod 21 is upwards ejected out of the through hole 20 by the resetting of the spring 24, so as to ensure that enough space is left at the bottom of the through hole 20 for the penetration of the positioning pin 19, and the spring 24 is made of plastic, so as.
In one embodiment of the present invention, a scraper 17 is fixedly installed on the inner surface of the seal seat 12, and the scraper 17 is inclined toward the valve ball 8 and contacts with the valve ball 8, and when the valve ball 8 rotates, the scraper 17 contacts with the scraper 17 inside the seal seat 12, so that the dirt attached to the surface of the valve ball 8 can be scraped off by the scraper 17, and the dirt is prevented from accumulating on the surface of the valve ball 8 to affect the water quality.
According to an embodiment of the invention, a sealing tongue 15 is arranged on the periphery of the outer surface of one side of the sealing ring 13 close to the groove 14, the sealing tongue 15 wraps the plate spring 16, when the sealing seat 12 is worn and consumed, the plate spring 16 is unfolded to push the sealing seat 12 to approach the valve ball 8, the sealing tongue 15 wraps the plate spring 16, and the plate spring 16 is prevented from being separated from the groove 14 on the sealing ring 13 when the plate spring 16 is unfolded.
As an embodiment of the present invention, a
In an embodiment of the present invention, a
The working principle is as follows: firstly, a valve body 1 is connected with a side cover 2, the valve body 1 and the side cover 2 are fixed through a bolt 3, then a ball valve is connected with a pipeline through a flange 7, a trigger lever 6 is utilized to rotate a plate seat 5 to rotate clockwise by ninety degrees, the plate seat 5 drives a valve ball 8 to rotate clockwise by ninety degrees in the valve body 1 through a valve rod 10, so that the opening of the valve ball 8 is communicated with a channel 11, the ball valve is opened, the valve ball 8 can be reset by driving the valve ball 8 to rotate anticlockwise by ninety degrees, the channel 11 can be blocked by utilizing the solid surface of the valve ball 8, the ball valve is closed, when the valve ball 8 rotates for multiple times, friction is continuously generated between the valve ball 8 and sealing seats 12 at two sides, so that the sealing seats 12 are worn, at the moment, a plate spring 16 is unfolded, the sealing seat 12 is pushed towards the direction of the valve ball 8, the tight connection between the valve ball 8 and the sealing seats 12 is ensured, and, thereby prevent that the ball valve from revealing, when the rivers that pass through the ball valve are high temperature liquid, close behind the valve ball 8, one side passageway 11 is filled by liquid, and another side passageway 11 liquid is exhausted, there is liquid to remain in the valve pocket that forms between valve ball 8 closed back and the valve body 1, these liquid remain can be at the inside a large amount of steam that produces of ball valve, lead to the valve pocket internal pressure too big, can promote seal receptacle 12 through steam pressure this moment, and leaf spring 16 receives the extrusion of seal receptacle 12 can compression deformation, thereby make seal receptacle 12 to the direction of keeping away from valve ball 8 carry out the displacement, produce the clearance between seal receptacle 12 and the valve ball 8, the inside steam high pressure accessible clearance of valve pocket is discharged, avoid the too high internal pressure of valve pocket and lead to valve ball 8 impaired, the security when the ball valve uses has been improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
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