CN111188925A - Double-valve-seat semi-ball valve - Google Patents
Double-valve-seat semi-ball valve Download PDFInfo
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- CN111188925A CN111188925A CN202010192912.9A CN202010192912A CN111188925A CN 111188925 A CN111188925 A CN 111188925A CN 202010192912 A CN202010192912 A CN 202010192912A CN 111188925 A CN111188925 A CN 111188925A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
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- 230000002035 prolonged effect Effects 0.000 description 5
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- 238000005299 abrasion Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
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- 238000004140 cleaning Methods 0.000 description 3
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- 230000002457 bidirectional effect Effects 0.000 description 2
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- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/04—Arrangements for preventing erosion, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
本发明提供了双阀座半球阀，属于阀门领域，包括阀体、球体、球冠和阀座，所述球体设在所述阀体内且在阀体内转动，所述球冠固设在所述球体上且与所述阀座匹配设置实现管道的打开和关闭控制，所述阀座设置在所述阀体轴向的两端，所述阀体成卧式设置，阀体的上端设有阀盖，球体打开状态下，球体在阀盖的覆盖面积内。本发明密封性好，安装操作方便快捷，而且方便后期的维护，适合各类通用行业的要求用阀，如水、污水、废水、蒸汽、气、纸浆、冶金、选矿、电力、城市供热系统等介质。
The present invention provides a double-seat hemispherical valve, which belongs to the field of valves and includes a valve body, a sphere, a spherical cap and a valve seat. The valve seat is arranged on the ball and matched with the valve seat to realize the opening and closing control of the pipeline. The valve seat is arranged at both ends of the valve body in the axial direction, the valve body is arranged in a horizontal type, and the upper end of the valve body is provided with a valve Cover, when the ball is open, the ball is within the coverage area of the valve cover. The invention has good sealing performance, convenient and quick installation and operation, and convenient maintenance in the later period, and is suitable for valves required by various general industries, such as water, sewage, waste water, steam, gas, pulp, metallurgy, mineral processing, electric power, urban heating system, etc. medium.
Description
Technical Field
The invention belongs to the field of valves, and relates to a double-valve-seat half ball valve.
Background
The hemisphere valve is a practical operation type product, and the actuating mechanism is provided with a hydraulic actuating device, so that the hemisphere valve is convenient for a user to operate and is convenient for remote automatic operation, and provides a reliable control valve for the predicament that the solution process flow of industrial departments such as chemical industry, petroleum, gas, metallurgy, electronics and the like is easy to precipitate, scale and separate out to influence the process flow under the matched automatic computer operation condition when the hemisphere valve is inconvenient to operate and is manually operated or normally opened under the severe environment.
In the long-term use process of the hemispherical valve, parameters such as sealing performance, convenience in maintenance, service life and the like are indexes for considering the quality of the valve, and the parameters are very important, so that the technical indexes of all aspects are improved by a new generation of products researched and developed by the company on the basis of old products.
Disclosure of Invention
The invention aims to solve the problem of providing the double-valve-seat half ball valve which has good sealing performance, is convenient and quick to install and operate, is convenient for later maintenance, and is suitable for valves required by various general industries, such as water, sewage, waste water, steam, gas, paper pulp, metallurgy, mineral separation, electric power, urban heat supply systems and other media.
In order to solve the technical problems, the invention adopts the technical scheme that: double-valve-seat hemisphere valve, including valve body, spheroid, spherical crown and disk seat, the spheroid is established just at the valve body internal rotation in the valve body, the spherical crown sets firmly on the spheroid and with the disk seat matches the setting and realizes opening and closing control of pipeline, the disk seat sets up the axial both ends of valve body, the valve body becomes horizontal setting, and the upper end of valve body is equipped with the valve gap, and under the spheroid open mode, the spheroid is in the coverage area of valve gap.
Further, valve seats at two ends of the valve body are symmetrically arranged relative to the vertical center line of the valve body, and the valve seats have three states, namely, the valve seats are correspondingly sealed with the left valve seat; after rotating 90 degrees, the spherical crown is arranged upwards, and the valve is in an open state; and the valve seat is correspondingly sealed with the right valve seat after rotating 180 degrees.
Furthermore, the inner wall of the valve body is of a smooth structure, the part of the valve body corresponding to the spherical crown is of a spherical structure, and the opposite vertical surfaces of the valve body are symmetrically arranged.
Further, the axis direction of disk seat, one end is fixed through the end cover, and the other end is fixed through the spacing arch of valve body downwardly extending, and the disk seat can slide along its axis direction between end cover and spacing arch, the disk seat is close to one side of end cover is equipped with a plurality of medium blind holes that allow the medium inflow, the quantity of medium blind hole is a plurality of and relative the axis direction equipartition setting of disk seat, the axis of medium blind hole with the axis parallel arrangement of disk seat.
Furthermore, the sealing pair corresponding to the spherical crown and the valve seat is spherical, a sealing ring for ensuring the sealing of the spherical crown and the ball body is arranged between the spherical crown and the ball body, and a fastening gap for compensation is arranged between the inner side of the outer ring of the spherical crown and the ball body in the state that the spherical crown is fixedly locked.
Furthermore, a sealing pair formed by the spherical crown and the valve seat is of a metal-to-metal structure, hard alloy is welded on the valve seat in a surfacing mode, the spherical crown is made of alloy steel, the spherical crown and the ball body form a hemisphere shape, and the spherical crown is hidden in the cavity of the valve body in the opening state of the valve.
Furthermore, one side of the ball body is rotatably connected with the valve body through a first valve rod, the other side of the ball body is rotatably connected with the valve body through a second valve rod, and the part of the first valve rod, which extends out of the valve body, is connected with an external driving device.
Further, be equipped with the adapter sleeve between first valve rod and the spheroid, in the axis direction of adapter sleeve, one end is fixed a position by the circular bead structure of first valve rod, and the other end is fixed a position by the protruding location that downwardly extending set up on the spheroid, and the cooperation section of first valve rod and adapter sleeve is regular polyhedral shape structure, is equipped with the valve pin of guaranteeing the three relative position between spheroid, adapter sleeve and the first valve rod three, is equipped with the locking groove that corresponds with the valve pin on the adapter sleeve, and the valve pin passes and stretches into behind the spheroid and sets up in the locking groove.
Furthermore, the first valve rod is rotatably connected with the valve body through a self-lubricating bearing, a shaft seal is arranged between one end, far away from the ball body, of the first valve rod and the valve body, the shaft seal is positioned through a sealing cover fixedly locked on the valve body, the second valve rod is rotatably connected with the valve body through the self-lubricating bearing, and one end, far away from the ball body, of the second valve rod is fixed through a bottom end cover.
Furthermore, the outer lane of bearing seal is equipped with at least one and places the sealing washer and be used for realizing the sealed constant head tank of outer lane, and the inner circle of bearing seal is equipped with at least one and places the sealing washer and be used for realizing the sealed constant head tank of inner circle.
Compared with the prior art, the invention has the following advantages and positive effects.
1. The invention adopts a double-valve seat structure, namely, the inlet end and the outlet end are both provided with the sealing valve seats, if the valve seat at one end is damaged due to various reasons to cause leakage in the use process, the spherical crown of the ball body can be reversed to the valve seat at the other end to work and close to achieve sealing, so that the valve is also a complete valve, namely, one valve replaces two valves, thereby prolonging the service life of the valve and greatly saving the cost for users;
2. the whole valve adopts a structure of a horizontal shaft design, namely, the valve rod can be horizontally arranged, a vertical structure in the traditional structure is broken through, and the problem of untight closing caused by the sinking of a ball body when the valve operates for a long time is avoided; the valve cover is arranged at the upper end of the valve body, so that the whole structure adopts a top-mounted structure, the middle opening of the valve is designed to be consistent with the structure of the ball body, the ball body can be directly taken out after the valve cover is opened, the assembly, the maintenance and the repair are very easy, time and labor are saved, and the working efficiency is improved; the sectional area of the valve cover is larger than that of the ball body, so that all parts can be installed from the top of the valve, namely from one side of the valve cover, and in the maintenance process, the parts do not need to be detached from a pipeline;
3. in the axial direction of the valve seat, the valve seat can move, when a medium flows in a closed state, the medium enters the medium blind hole, the valve seat is ensured to be attached to the spherical crown more tightly, the sealing performance is improved, and the compensation type movable valve seat is adopted, namely the valve seat can reciprocate along the direction of a fluid channel of the hemispherical valve, so that the valve seat can be ensured to be always attached to the spherical crown, the bidirectional pressure bearing can be realized, the sealing zero leakage can be realized, and the working condition that a user needs a double-flow medium pipeline and requires the sealing zero leakage can be met;
4. a fastening gap for compensation is arranged between the inner side of the outer ring of the spherical crown and the ball body, the spherical crown can be further locked under the condition of abrasion of the spherical crown, the fastening gap provides a deformation space, accurate positioning after abrasion of the spherical crown is guaranteed, fastening and fixation are guaranteed, looseness is avoided, the spherical crown is matched with a compensating valve seat, sealing performance is guaranteed, and the service life of the structure is prolonged;
5. the sealing pair formed by the spherical crown and the valve seat adopts a metal-to-metal structure, the hard alloy is welded on the valve seat in an overlaying mode, the spherical crown is made of alloy steel, the corrosion resistance is high, the abrasion resistance is high, the universality of valve parts is strong, the maintenance is convenient, and the service life of the valve is indirectly prolonged;
6. the sealing surface of the semi-spherical valve is provided with a self-cleaning structure. When the ball body is inclined away from the valve seat, the fluid in the pipeline uniformly passes through the sealing surface of the ball body at 360 degrees, so that the local scouring of the valve seat by the high-speed fluid is eliminated, the accumulated objects on the sealing surface are washed away, and the purpose of self-cleaning is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a double-seat half ball valve of the present invention;
FIG. 2 is a front view of a double seat hemisphere valve of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2 of the present invention;
FIG. 4 is a cross-sectional view C-C of FIG. 3 of the present invention;
FIG. 5 is a detail view of section E of FIG. 4 of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 2 of the present invention;
FIG. 7 is a detail view of section D of FIG. 6 of the present invention;
FIG. 8 is a schematic view of another angle structure of the double seat hemisphere valve of the invention;
FIG. 9 is a detail view of section F of FIG. 8 of the present invention;
FIG. 10 is a cross-sectional view of a valve seat of the present invention;
fig. 11 is a schematic view of the structure of the valve seat of the present invention.
Reference numerals:
1. a valve body; 2. a sphere; 21. fastening the gap; 22. a second valve stem; 23. a bottom end cap; 24. connecting sleeves; 25. a first valve stem; 26. shaft sealing; 261. positioning a groove; 27. sealing the cover; 28. a valve pin; 3. a spherical cap; 4. an end cap; 5. a valve cover; 51. a hoisting ring; 6. a valve seat; 61. a dielectric blind hole; 62. a clamping groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1-11, the invention is a double-seat half ball valve, which comprises a valve body 1, a ball body 2, a spherical crown 3, a valve seat 6 and an end cover 4, wherein the ball body 2 is rotatably connected with the valve body 1, the spherical crown 3 is fixedly arranged on the ball body 2, the valve seat 6 is fixedly arranged on a flow port at one end of the valve body 1 through the end cover 4, the ball body 2 rotates in the valve body 1 and is matched with a valve to realize the opening and closing actions of the full diameter of the valve body 1, so as to realize the control of the opening and the throttling of a pipeline, the structure is symmetrically provided with two valve seats 6, a double-seat structure is adopted, namely, the inlet end and the outlet end are both provided with the valve seats 6, if the valve seat at one end is damaged due to various reasons and causes leakage in the using process, the spherical crown of the ball body can be switched to the valve seat at the other end to work and close to achieve sealing, greatly saving the cost for the user.
The whole valve adopts a structure of a horizontal shaft design, namely, the valve rod can be horizontally arranged, so that a vertical structure in the traditional structure is broken through, and the problem of untight closing caused by the sinking of the ball body 2 when the valve is operated for a long time is solved; the valve cover 5 is arranged at the upper end of the valve body 1, so that the whole structure adopts a top-mounted structure, the middle opening of the valve is designed to be consistent with the structure of the ball body 2, the ball body 2 can be directly taken out after the valve cover 5 is opened, the assembly, the maintenance and the repair are very easy, time and labor are saved, and the working efficiency is improved; the sectional area of the valve cover 5 is larger than that of the ball body 2, so that all parts can be loaded from the top of the valve, namely, from one side of the valve cover 5, in the maintenance process, the parts do not need to be disassembled from a pipeline, and once the parts need to be replaced, the bolts on the valve cover 5 are disassembled, the valve cover 5 is taken down, so that the ball body 2 and the spherical crown 3 can be taken out, and the valve can be maintained and maintained on line.
Preferably, the spherical crown 3 is hemispherical, and the spherical crown 3 is hidden in the cavity of the valve body 1 in the opening state of the valve, so that a sealing surface is prevented from being directly washed by a medium; meanwhile, the full-flow passage circulation of the valve is ensured, the energy loss is reduced to the maximum extent, the head loss is almost zero, and the circulation efficiency is improved; more preferably, a sealing pair formed by the spherical crown 3 and the valve seat 6 adopts a metal-to-metal structure, the valve seat 6 is made of hard alloy by surfacing, the spherical crown 3 adopts alloy steel, the corrosion resistance is high, the wear resistance is high, the universality of valve parts is strong, the maintenance and repair are convenient, and the service life of the valve is indirectly prolonged; in the closing process, the spherical crown 3 on the ball body 2 is gradually close to the valve seat 6, reliable sealing is realized at the closing moment, the sealing pair is prevented from being always in a friction state in the opening and closing process of the valve, and the service life of the valve is prolonged; more preferably, the sealing pair formed between the surface of the spherical cap 3 and the metal valve seat 6 is arranged in an inclined plane, has a shearing effect, and is particularly suitable for fiber-containing materials, solid particles, slurry and the like; more preferably, the spherical crown 3 is fixedly locked on the sphere 2 through a plurality of countersunk screws, the sealing surface of the spherical crown 3 and the valve seat 6 is of a spherical surface structure, the sealing performance is good, and a sealing ring is arranged between the spherical crown 3 and the sphere 2 to ensure the sealing performance between the spherical crown 3 and the sphere 2; more preferably, after the spherical crown 3 is fixedly locked, a fastening gap 21 is arranged between the outer ring end face of the spherical crown 3 and the sphere 2, when the spherical crown 3 is abraded, the spherical crown 3 and the sphere 2 can be further locked, the spherical crown 3 and the sphere 2 are always in a tight and fixedly locked state, the stability is good, the fault is not easy to occur, a certain compensation effect is realized, and the service life of the structure is prolonged.
More preferably, the valve body 1 adopts a semicircular channel, so that the valve has good circulation performance, and the flow channel of the valve body 1 is smooth and has no recess, so that the defects of valve damage, untight closing and the like caused by accumulation of sundries are avoided; when the valve is opened, the flow channel is completely unblocked, and the head loss is small during operation; more preferably, the structure is convenient to operate, can be opened and closed quickly, and can be rotated by 90 degrees from full opening to full closing, so that the structure is convenient for remote control.
Preferably, the valve mounting height is less than the gate valve of the same specification, and is close with the butterfly valve, and structural length is less than ball valve of the same specification, also is close with the butterfly valve, and the installation is not restricted by water flow direction and installation space, can install at any angle, and application scope is wider, is fit for the requirement of all kinds of general trades and uses the valve, such as water, sewage, waste water, steam, gas, paper pulp, metallurgy, ore dressing, electric power, urban heating system, etc. medium.
More preferably, the valve cover 5 is similar to an oval shape, the lifting ring 51 is arranged at the upper end of the valve cover 5 in the long axis direction, the lifting ring 51 is arranged at the rear of the valve cover 5, an operator can conveniently take the valve cover in the later maintenance process, the operation convenience is improved, the lifting ring 51 can also be arranged at the center, the center is provided with a screw hole, the lifting ring is directly and fixedly locked in the screw hole, the valve cover 5 is in an upward-protruding arch shape, and the lower end of the valve cover 5 is provided with a cross-shaped reinforcing rib, so that the strength of; more preferably, one side that valve gap 5 is close to valve body 1 is equipped with the fixed slot, and the embedded sealing strip of establishing of fixed slot, sealing strip adopt market on current sealing strip structure can, do not have special requirement, adopt high temperature resistant materials such as polytetrafluoroethylene, fluororubber to make best, the temperature range of being suitable for is wider a bit, the leakproofness between valve gap 5 and the valve body 1 has been guaranteed in the setting of sealing strip, has guaranteed the leakproofness of whole structure to a certain extent.
In the structure, the number of the valve seats 6 is 1, the valve seats are arranged at the flow opening part at one end of the valve body 1, and the compensation type movable valve seats 6 are adopted, namely the valve seats 6 can do reciprocating motion along the direction of a fluid channel of a hemispherical valve, so that the valve seats 6 can be always attached to the spherical crown 3, bidirectional pressure bearing can be realized, zero leakage sealing can be realized, the working condition that a user needs a double-flow medium pipeline and zero leakage sealing is required can be met, furthermore, in the structure, a sealing surface formed by the spherical crown 3 and the valve seats 6 is provided with a self-cleaning structure, when the sphere 2 inclines away from the valve seat 6, fluid in the pipeline uniformly passes through the sealing surface of the sphere 2 in 360 degrees, the local flushing of the high-speed fluid on the valve seats 6 is eliminated, accumulated objects on the sealing surface are flushed away, and the purpose of self.
More preferably, the valve rod comprises a first valve rod 25 and a second valve rod 22, the ball 2 is in a U-shaped structure, the connecting rods on the two sides of the ball 2 adopt a convex arc structure, the appearance is attractive, the manufacture is convenient, the strength is high, the closed flow area is ensured, as the drift diameter flow is improved, two sides of the ball body 2 are respectively connected with the valve body 1 through the first valve rod 25 and the second valve rod 22 in a rotating way, a composite self-lubricating bearing is arranged between the outer ring of the second valve rod 22 and the valve body 1, the composite self-lubricating bearing is embedded in the valve body 1 and is in interference fit with the valve body 1, the rotation of the second valve rod 22 relative to the valve body 1 is realized, the composite self-lubricating bearing can be directly purchased from the market, as long as the aperture specification is consistent with the specification of the second valve rod 22, the composite self-lubricating bearing can reduce the transmission torque and has obvious advantages in the selection of an electric actuating mechanism; more preferably, the end of the second valve rod 22 passing through is fixed by a bottom end cap 423, the bottom end cap 423 is fixedly locked on the valve body 1 by screws, and a sealing ring is arranged between the bottom end cap 423 and the valve body 1; the first valve rod 25 is connected with an external driving device, the connecting sleeve 24 is arranged between the first valve rod 25 and the ball body 2, one end of the connecting sleeve 24 is positioned by a shoulder structure of the first valve rod 25 in the axial direction, and the other end of the connecting sleeve 24 is positioned by a positioning bulge which extends downwards on the ball body 2, so that the positioning in the axial direction of the connecting sleeve 24 is ensured; the section of the matching section of the first valve rod 25 and the connecting sleeve 24 is of a regular polyhedral structure, so that the transmission of power is ensured, a valve pin 28 for ensuring the relative positions of the sphere 2, the connecting sleeve 24 and the first valve rod 25 is arranged among the sphere 2, the connecting sleeve 24 and the first valve rod 25, a stop groove corresponding to the valve pin 28 is arranged on the connecting sleeve 24, the valve pin 28 penetrates through the sphere 2 and then extends into the stop groove, so that the power is ensured to be transmitted to the sphere 2 from the first valve rod 25, the problem of circumferential rotation or slipping is prevented, and the power transmission efficiency; more preferably, a composite self-lubricating bearing is also arranged between the first valve rod 25 and the valve body 1, and the function of the composite self-lubricating bearing is the same as that of the composite self-lubricating bearing on the second valve rod 22; first valve rod 25 is kept away from and is equipped with bearing seal 26 between spheroid 2's one end and the valve body 1, bearing seal 26's outer lane is equipped with at least one and places the sealing washer and be used for realizing the sealed constant head tank 261 of outer lane, bearing seal 26's inner circle is equipped with at least one and places the sealing washer and be used for realizing the sealed constant head tank 261 of inner circle, first valve rod 25 has been realized the sealed of axis direction, bearing seal 26 has realized the location of axis direction through closing cap 27, closing cap 27 locks admittedly on valve body 1, first valve rod 25 stretches out the part of valve body 1 and is connected with outside drive arrangement through at least one keyway structure, in this application, be equipped with four keyways at the circumference direction equipartition on first valve rod 25, better realization power transmission and.
More preferably, the valve seat 6 is annular, the axis of the valve seat 6 is parallel to the axis of the valve body 1, one end of the valve seat 6 is fixed by the end cover 4 in the axis direction, the other end of the valve seat 6 is fixed by the limit protrusion extending downwards from the valve body 1, the valve seat 6 can slide between the end cover 4 and the limit protrusion in the axis direction, the sliding distance of the valve seat 6 in the axis direction is 3-8mm, preferably 5mm, the sliding distance can ensure the tight fit condition under the wear condition, one side of the valve seat 6 close to the end cover 4 is provided with a plurality of medium blind holes 61, the axis of the medium blind holes 61 is parallel to the axis of the valve seat 6, the plurality of medium blind holes 61 are circumferentially and uniformly distributed relative to the axis of the valve seat 6, when a medium flows from one side of the valve seat 6 to the other side, the medium enters the medium blind holes 61 to promote the valve, the valve seat 6 can be tightly attached to the ball body 2, real-time sealing is realized, and the sealing effect is good; more preferably, the outer ring of the valve seat 6 is provided with at least one clamping groove 62 for placing a sealing ring, and in the structure, the number of the clamping grooves is two, so that the sealing performance of the outer ring of the valve seat 6 is improved.
In the actual working process, the ball body 2 and related parts are installed according to the structure, and are directly put in from the upper end of the valve body 1 when the valve is opened, so that the convenience of assembly is improved, in the later maintenance process, the valve cover 5 is convenient to operate after being opened, the whole structure adopts a horizontal arrangement, the first valve rod 25 and the second valve rod 22 are horizontally arranged, the ball body 2 drives the spherical crown 3 to upwards rotate by 90 degrees from a sealing state to an opening state, the operation is more convenient and faster, in the structure, the valve seat 6 can move in the medium flowing direction, a certain compensation function is realized, the sealing performance of the structure is ensured, the installation and the operation are convenient and faster, and the valve is convenient for later maintenance, and is suitable for various general industries requiring valves, such as water, sewage, waste water, steam, gas, paper pulp, media of metallurgy, mineral separation, electric power, urban heat supply systems and the like.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010192912.9A CN111188925A (en) | 2020-03-18 | 2020-03-18 | Double-valve-seat semi-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010192912.9A CN111188925A (en) | 2020-03-18 | 2020-03-18 | Double-valve-seat semi-ball valve |
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| Publication Number | Publication Date |
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| CN111188925A true CN111188925A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010192912.9A Pending CN111188925A (en) | 2020-03-18 | 2020-03-18 | Double-valve-seat semi-ball valve |
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| CN (1) | CN111188925A (en) |
Cited By (1)
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| CN118462855A (en) * | 2024-07-09 | 2024-08-09 | 高能阀门集团有限公司 | Large-scale full-diameter horizontal eccentric half ball valve |
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