CN114198512B - Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect - Google Patents
Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect Download PDFInfo
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- CN114198512B CN114198512B CN202210045330.7A CN202210045330A CN114198512B CN 114198512 B CN114198512 B CN 114198512B CN 202210045330 A CN202210045330 A CN 202210045330A CN 114198512 B CN114198512 B CN 114198512B
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a double eccentric two-way high temperature butterfly valve with high efficiency sealing effect, belonging to the butterfly valve field, the scheme realizes adjusting the movable valve seat through a split butterfly plate mechanism, the sealing performance is reliable when the butterfly plate is closed and tightened when the butterfly plate is pressed forward, the movable valve seat is pushed by a medium to be in close contact with a butterfly plate pressure plate ring to achieve the best sealing effect when the butterfly plate is pressed backward, the disc-shaped butterfly plate rotates around the axis in a cylindrical channel of the valve body, the rotation angle is between 0 DEG and 90 DEG, the disc-shaped butterfly plate is in a full open state when the disc-shaped butterfly plate rotates to 90 DEG, the butterfly plate is easy to maintain and replace by the split butterfly plate mechanism, the using effect is improved, and when the disc plate pressure plate ring and the disc plate interception liquid are impacted, the dispersion holes disperse the liquid into a plurality of small bundles of liquid, disperse the impact force and offset the impact force by the repulsion force between the movable magnetic ball and the magnetic block, further reduce the impact force, the butterfly plate pressing ring and the butterfly plate are not easy to be damaged, and the service life of the butterfly plate pressing ring and the butterfly plate is prolonged.
Description
Technical Field
The invention relates to the field of butterfly valves, in particular to a double-eccentric bidirectional high-temperature butterfly valve with a high-efficiency sealing effect.
Background
The double-eccentric butterfly valve is also called as a high-performance butterfly valve, has the structural characteristic that the axis of the valve rod deviates from the center of the butterfly plate and also deviates from the center of the body, is mainly suitable for drainage of systems such as smelting, chemical engineering, water source spring engineering, environmental facility construction and the like of water plants, power plants and steel plants, is particularly suitable for water pipelines, and is used as regulating and intercepting equipment.
The double-eccentric butterfly valve in the prior art is influenced by liquid interception impact in the long-term use process, is easy to generate much abrasion, and causes the reduction of the sealing property and the deterioration of the use effect.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a double-eccentric bidirectional high-temperature butterfly valve with a high-efficiency sealing effect, the scheme realizes the adjustment of a movable valve seat through a split type butterfly plate mechanism, the butterfly plate is closed and tightened more when the butterfly plate is pressed forwards, the sealing performance of the butterfly plate is reliable, the movable valve seat is pushed by a medium to be in close contact with a butterfly plate pressing plate ring to achieve the optimal sealing effect when the butterfly plate is pressed backwards, the disc-shaped butterfly plate rotates around an axis in a cylindrical channel of a valve body, the rotating angle is between 0 and 90 degrees, the disc-shaped butterfly plate is in a fully-open state when the disc-shaped butterfly plate rotates to 90 degrees, the butterfly plate is easy to maintain and replace by means of the split type butterfly plate mechanism, and the using effect of the butterfly plate is improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A double-eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect comprises a valve body, wherein a split butterfly plate mechanism is arranged inside the valve body, a valve shaft is arranged inside the valve body, two shaft sleeves are sleeved at the outer end of the valve shaft, a support is arranged at the outer end of the valve body through a nut, a stud and a gasket, a packing gland is arranged at the outer end of the valve body and is connected with the support through a bolt, packing is arranged between the packing gland and the valve shaft, an end cover is arranged at the lower end of the valve body through a bolt, an end cover gasket is arranged between the end cover and the valve body, a split ring is arranged between the end cover and the valve body, the scheme realizes the adjustment of a movable valve seat through the split butterfly plate mechanism, the butterfly plate is closed more and more tightly when being pressed forward, the sealing performance of the butterfly plate is reliable, and the movable valve seat is pushed by a medium to be in close contact with a butterfly plate pressing ring to achieve the best sealing effect when being pressed backward, in the cylindrical passageway of valve body, the disc butterfly plate is rotatory around the axis, and rotation angle is between 0 to 90, when rotatory to 90, is in full open-ended state, and makes the butterfly plate easily maintain and change with the help of split type butterfly plate mechanism, improves its result of use.
Further, split type butterfly plate mechanism is including establishing the butterfly plate in the valve body is inside, the butterfly plate passes through round pin and valve shaft fixed connection, butterfly plate clamp plate circle is installed through the bolt in the outer end of butterfly plate, be equipped with the butterfly plate sealing washer between butterfly plate and the butterfly plate clamp plate circle, install the graphite pad between butterfly plate sealing washer and the butterfly plate, the valve body passes through the bolt and installs valve body clamp plate circle, the press sleeve is installed to the outer end of valve body clamp plate circle, high temperature graphite packing is installed to the outer end of press sleeve, install the movable valve seat between butterfly plate and the valve body, be equipped with pretension spring and jackscrew between valve body clamp plate circle and the movable valve seat respectively, split type butterfly plate mechanism through the sealed face contact of coincide with the movable valve seat when freely adjusting the butterfly plate, compensatied the sealed relevant size deviation that appears man-hour, reduced the processing degree of difficulty simultaneously, and easily maintain, And a pretightening spring and a jackscrew are arranged between the gap between the step end face of the butterfly plate pressing plate ring and the end face of the movable valve seat to ensure the sealing pretightening force of the movable valve seat, the excircle of the movable valve seat is fixed by the valve body pressing plate ring, the pressing sleeve is fixed by the valve body pressing plate ring to press the high-temperature graphite packing, the movable valve seat drives the pressing sleeve to be in close contact with the high-temperature graphite packing along with the medium pressure or the opening and closing of the valve to play a role in sealing, and the elastic spherical surface of the groove of the butterfly plate sealing ring is designed to have light opening and closing moment.
Furthermore, the upper end and the lower end of the pressing sleeve are both V-shaped, the lower end of the butterfly plate is arc-shaped, the upper end and the lower end of the pressing sleeve are both V-shaped and arc-shaped, sealing use of the butterfly plate is facilitated, and sealing performance is improved.
Furthermore, the step end face of the valve body pressing plate ring is in contact with the end face of the movable valve seat, the outer end of the movable valve seat is in close contact with the graphite pad, and the movable valve seat is kept in good sealing performance in the using process through the close contact of the valve body pressing plate ring and the movable valve seat as well as the close contact of the movable valve seat and the graphite pad.
Furthermore, the movable valve seat adopts a movable bidirectional floating type arc surface sealing structure, and the movable valve seat of the movable bidirectional floating type arc surface sealing structure is not easy to leak in the using process.
Furthermore, the upper end of the butterfly plate pressing plate ring is fixedly connected with an annular frame, the inner part of the annular frame is fixedly connected with a dispersion plate, the outer end of the dispersion plate is provided with a plurality of uniformly distributed dispersion holes, the outer end of the butterfly plate pressing plate ring is fixedly connected with a buffer hemisphere, a plurality of uniformly distributed linking rods are fixedly connected between the buffer hemisphere and the annular frame, the outer ends of the linking rods are respectively sleeved with a movable magnetic ball and an elastic bag body, the outer end of the elastic bag body is respectively fixedly connected with the annular frame and the movable magnetic ball, the inner part of the elastic bag body is fixedly connected with a magnet block, the inner part of the elastic bag body is provided with magnetic isolation powder, one end of the movable magnetic ball, which is close to the magnet block, is repelled, the butterfly plate pressing plate ring and the butterfly plate stop liquid, when the butterfly plate pressing plate ring and the butterfly plate stop the liquid, the dispersion plate disperses the liquid into a plurality of small bundles of liquid through the dispersion holes, make the impact force disperse, strike simultaneously on buffering hemisphere, disperse and strike the elasticity utricule deformation of impact activity magnetic ball extrusion, make it drive the powder dispersion of magnetic isolation, cancel the magnetic screen of magnet piece, offset the impact force through the repulsion force between activity magnetic ball and the magnet piece, further reduce and slow down the impact force, make butterfly plate clamp plate circle and butterfly plate be difficult for taking place to damage, prolong its life.
Furthermore, the inner wall of the dispersion hole and the outer end of the buffering hemisphere are both polished surfaces, and the inner wall of the dispersion hole and the outer end of the buffering hemisphere are both polished surfaces, so that liquid is not easy to remain in the dispersion hole and on the buffering hemisphere.
Further, the inner wall of activity magnetic ball is excavated there are two spherical grooves of longitudinal symmetry, the inner wall excavation of spherical groove has the ball, the outer end and the linking pole of ball contact, and through the setting of ball, it is more smooth and easy convenient to make the motion of activity magnetic ball, reduces the friction influence.
Further, the magnetism-insulating powder is made of an Fe-Ni alloy powder material, the Ni content of the magnetism-insulating powder is 80%, and the magnetism-insulating powder made of the Fe-Ni alloy powder material can effectively shield the magnetic influence of the magnet block in a dense state, but cannot effectively shield the magnetic influence of the magnet block in a dispersed state.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme realizes adjusting movable disk seat through split type butterfly plate mechanism, make the butterfly plate close more and make its sealing performance reliable when forward pressure, promote movable disk seat and butterfly plate clamp plate circle in close contact with by the medium when backward pressure and reach best sealed effect, in the cylindrical passageway of valve body, the disc butterfly plate is rotatory round the axis, rotation angle is 0 to between 90, when rotatory to 90, be in full open state, and make butterfly plate easily maintain and change with the help of split type butterfly plate mechanism, improve its result of use.
(2) The split butterfly plate mechanism comprises a butterfly plate arranged inside a valve body, the butterfly plate is fixedly connected with a valve shaft through a pin, a butterfly plate pressing plate ring is arranged at the outer end of the butterfly plate through a bolt, a butterfly plate sealing ring is arranged between the butterfly plate and the butterfly plate pressing plate ring, a graphite pad is arranged between the butterfly plate sealing ring and the butterfly plate, the valve body is provided with a valve pressing plate ring through a bolt, a pressing sleeve is arranged at the outer end of the valve pressing plate ring, a high-temperature graphite packing is arranged at the outer end of the pressing sleeve, a movable valve seat is arranged between the butterfly plate and the valve body, a pre-tightening spring and a jackscrew are respectively arranged between the valve pressing plate ring and the movable valve seat, the split butterfly plate mechanism is in contact with a sealing surface of the movable valve seat in an inosculating manner when the butterfly plate is freely adjusted, sealing related size deviation generated in machining is compensated, machining difficulty is reduced, maintenance and replacement is easy, and a pre-tightening spring is arranged between a step end surface of the butterfly plate pressing plate ring and a clearance of the movable valve seat, The jackscrew has guaranteed the movable valve seat and has sealed pretightning force, and the activity disk seat excircle is pressed high temperature graphite packing by fixed press sleeve of valve body clamp plate circle, and the movable valve seat drives press sleeve and high temperature graphite packing in close contact with and plays the sealed effect along with medium pressure or valve opening, when closing to butterfly plate sealing washer recess elasticity sphere design is opened, closing moment is light.
(3) The upper end and the lower end of the pressing sleeve are both V-shaped, the lower end of the butterfly plate is arc-shaped, the upper end and the lower end of the pressing sleeve are both V-shaped and arc-shaped, sealing use of the pressing sleeve is facilitated, and sealing performance is improved.
(4) The step end face of the valve body pressing plate ring is in contact with the end face of the movable valve seat, the outer end of the movable valve seat is in close contact with the graphite pad, and the movable valve seat is kept in good sealing performance in the using process through the close contact of the valve body pressing plate ring and the movable valve seat as well as the close contact of the movable valve seat and the graphite pad.
(5) The movable valve seat adopts a movable bidirectional floating type arc surface sealing structure, and the movable valve seat of the movable bidirectional floating type arc surface sealing structure is not easy to leak in the using process.
(6) The upper end of the butterfly plate pressing plate ring is fixedly connected with an annular frame, the inner part of the annular frame is fixedly connected with a dispersion plate, the outer end of the dispersion plate is provided with a plurality of uniformly distributed dispersion holes, the outer end of the butterfly plate pressing plate ring is fixedly connected with a buffer hemisphere, a plurality of uniformly distributed linking rods are fixedly connected between the buffer hemisphere and the annular frame, the outer ends of the linking rods are respectively sleeved with a movable magnetic ball and an elastic bag body, the outer end of the elastic bag body is respectively fixedly connected with the annular frame and the movable magnetic ball, the inner part of the elastic bag body is fixedly connected with a magnet block, the inner part of the elastic bag body is provided with absolute magnetic powder, one end of the movable magnetic ball, which is close to the magnet block, is repelled, the butterfly plate pressing plate ring and the butterfly plate stop liquid, when the butterfly plate is impacted, the dispersion plate disperses the liquid into a plurality of small liquid beams through the dispersion holes, so that the impact force is dispersed and simultaneously impacts the buffer hemisphere, the dispersion is come and is strikeed movable magnetic ball extrusion elasticity utricule deformation, makes it drive the powder dispersion of magnetic isolation, cancels the magnetic screen of magnet piece, offsets the impact force through the repulsion force between movable magnetic ball and the magnet piece, further reduces and slows down the impact force, makes butterfly plate clamp plate circle and butterfly plate be difficult for taking place to damage, prolongs its life.
(7) The inner wall of the dispersion hole and the outer end of the buffering hemisphere are both polished surfaces, and the inner wall of the dispersion hole and the outer end of the buffering hemisphere are both polished surfaces, so that liquid is not easy to remain in the dispersion hole and on the buffering hemisphere.
(8) The inner wall of activity magnetic ball is excavated there are two spherical grooves of longitudinal symmetry, and the inner wall of spherical groove is excavated there is the ball, and the outer end and the linking rod of ball contact, through the setting of ball, make the motion of activity magnetic ball more smoothly convenient, reduce the friction influence.
(9) The magnetic shielding powder is made of Fe-Ni alloy powder material, the Ni content in the magnetic shielding powder is 80%, and the magnetic shielding powder made of the Fe-Ni alloy powder material can effectively shield the magnetic influence of the magnet block in a dense state, but can not effectively shield the magnetic influence of the magnet block in a dispersed state.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall side-view cross-sectional configuration of the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of the split butterfly plate mechanism of the present invention;
FIG. 4 is a schematic top sectional view of the split butterfly plate mechanism of the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic top view of the ring frame of the present invention;
fig. 7 is a schematic side view of a dispersion plate according to the present invention.
The reference numbers in the figures illustrate:
1. a valve body; 2. a valve shaft; 3. a butterfly plate; 4. a support; 5. a packing gland; 6. a split butterfly plate mechanism; 7. an end cap; 8. a filler; 9. a shaft sleeve; 10. a pin; 11. an end cap gasket; 12. opening the ring; 13. high-temperature graphite packing; 14. pressing the sleeve; 15. a valve body pressure plate ring; 16. a movable valve seat; 17. pre-tightening the spring; 18. carrying out top thread; 19. a butterfly plate sealing ring; 20. a graphite pad; 21. a butterfly plate pressing plate ring; 22. an annular frame; 23. a dispersion plate; 24. a buffer hemisphere; 25. a connecting rod; 26. a movable magnetic ball; 27. an elastic bladder body; 28. and a magnet block.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may 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.
Example (b):
referring to fig. 1-5, a double-eccentric two-way high-temperature butterfly valve with high-efficiency sealing effect comprises a valve body 1, a split butterfly plate mechanism 6 is arranged inside the valve body 1, a valve shaft 2 is arranged inside the valve body 1, two shaft sleeves 9 are sleeved at the outer end of the valve shaft 2, a bracket 4 is arranged at the outer end of the valve body 1 through nuts, studs and gaskets, a packing gland 5 is arranged at the outer end of the valve body 1, the packing gland 5 is connected with the bracket 4 through bolts, packing 8 is arranged between the packing gland 5 and the valve shaft 2, an end cover 7 is arranged at the lower end of the valve body 1 through bolts, an end cover gasket 11 is arranged between the end cover 7 and the valve body 1, a split ring 12 is arranged between the end cover 7 and the valve body 1, the split butterfly plate mechanism 6 is used for adjusting a movable valve seat 16, the butterfly plate 3 is closed more tightly when the butterfly plate is pressed forward, the sealing performance of the butterfly plate is reliable, and the movable valve seat 16 is pushed by a medium to be in tight contact with a butterfly plate pressing ring 21 when the butterfly plate is pressed backward to achieve the best sealing effect, in the cylindrical passageway of valve body 1, disc butterfly plate 3 is rotatory around the axis, and rotation angle is between 0 to 90, when rotatory to 90, is in full open mode, and makes butterfly plate 3 easily maintain and change with the help of split type butterfly plate mechanism 6, improves its result of use.
Referring to fig. 2-5, the split butterfly plate mechanism 6 includes a butterfly plate 3 disposed inside a valve body 1, the butterfly plate 3 is fixedly connected with a valve shaft 2 through a pin 10, a butterfly plate pressing ring 21 is mounted at an outer end of the butterfly plate 3 through a bolt, a butterfly plate sealing ring 19 is disposed between the butterfly plate 3 and the butterfly plate pressing ring 21, a graphite pad 20 is mounted between the butterfly plate sealing ring 19 and the butterfly plate 3, the valve body 1 is mounted with a valve pressing ring 15 through a bolt, a pressing sleeve 14 is mounted at an outer end of the valve pressing ring 15, a high temperature graphite packing 13 is mounted at an outer end of the pressing sleeve 14, a movable valve seat 16 is mounted between the butterfly plate 3 and the valve body 1, a pre-tightening spring 17 and a jackscrew 18 are respectively disposed between the valve pressing ring 15 and the movable valve seat 16, the split butterfly plate mechanism 6 is in contact with a sealing surface of the movable valve seat 16 when freely adjusting the butterfly plate 3, so as to compensate for a size deviation related to sealing during processing, and reduce processing difficulty, and easy to maintain, change, and butterfly plate clamp plate 21 step end face and movable valve base 16 end face clearance have pretension spring 17, jack screw 18 guarantee the movable valve base 16 seals the pretension, and the excircle of movable valve base 16 is pressed the high-temperature graphite packing 13 by the fixed pressing sleeve 14 of valve body clamp plate ring 15, the movable valve base 16 drives the pressing sleeve 14 and high-temperature graphite packing 13 to contact closely and play a sealing role with medium pressure or when the valve is opened, closed, and the butterfly plate 19 recess elastic sphere is designed to open, the closing moment is light.
Referring to fig. 3-5, the upper and lower ends of the pressing sleeve 14 are both V-shaped, the lower end of the butterfly plate 3 is arc-shaped, the upper and lower ends of the pressing sleeve 14 are both V-shaped and the lower end of the butterfly plate 3 is arc-shaped, so as to facilitate sealing use and improve sealing performance, the step end surface of the valve body pressing plate ring 15 is in contact with the end surface of the movable valve seat 16, the outer end of the movable valve seat 16 is in close contact with the graphite pad 20, the movable valve seat 16 is kept well sealing performance in the use process by the close contact of the valve body pressing plate ring 15, the movable valve seat 16, the graphite pad 20, and the movable valve seat 16 adopts a movable bidirectional floating type arc surface sealing structure, so that the movable valve seat 16 is not easy to leak in the use process.
Referring to fig. 5-7, the upper end of the butterfly plate pressing ring 21 is fixedly connected with an annular frame 22, the inside of the annular frame 22 is fixedly connected with a dispersion plate 23, the outer end of the dispersion plate 23 is drilled with a plurality of uniformly distributed dispersion holes, the outer end of the butterfly plate pressing ring 21 is fixedly connected with a buffer hemisphere 24, a plurality of uniformly distributed linking rods 25 are fixedly connected between the buffer hemisphere 24 and the annular frame 22, the outer ends of the linking rods 25 are respectively sleeved with a movable magnetic ball 26 and an elastic capsule 27, the outer end of the elastic capsule 27 is respectively fixedly connected with the annular frame 22 and the movable magnetic ball 26, the inside of the elastic capsule 27 is fixedly connected with a magnet block 28, the inside of the elastic capsule 27 is provided with magnetic-isolating powder, the ends of the movable magnetic ball 26 and the magnet block 28 close to each other are repelled, the butterfly plate pressing ring 21 and the butterfly plate 3 block liquid, and when being impacted by the liquid, the dispersion plate 23 disperses the liquid into a plurality of small bundles of liquid through the dispersion holes, the impact force is dispersed and simultaneously impacts on the buffering hemisphere 24, the dispersed impact movable magnetic ball 26 extrudes the elastic capsule body 27 to deform, the elastic capsule body drives the absolute magnetic powder to disperse, the magnetic shielding of the magnet block 28 is cancelled, the impact force is counteracted through the repulsive force between the movable magnetic ball 26 and the magnet block 28, the impact force is further reduced and slowed down, the butterfly plate pressing plate ring 21 and the butterfly plate 3 are not easy to damage, and the service life of the butterfly plate pressing plate ring is prolonged.
Referring to fig. 5-7, the inner wall of the dispersion hole and the outer end of the buffer hemisphere 24 are both polished surfaces, the inner wall of the dispersion hole and the outer end of the buffer hemisphere 24 are both set to be polished surfaces, so that liquid is not easy to remain in the dispersion hole and on the buffer hemisphere 24, two spherical grooves which are symmetrical up and down are cut on the inner wall of the movable magnetic ball 26, balls are cut on the inner wall of the spherical grooves, the outer ends of the balls are in contact with the connecting rod 25, the movement of the movable magnetic ball 26 is more smooth and convenient through the arrangement of the rolling balls, the friction influence is reduced, the magnetism insulation powder is made of Fe-Ni alloy powder material, the Ni content in the magnetism insulation powder is 80 percent, the use of the nonmagnetic powder made of the Fe — Ni alloy powder material can effectively shield the magnetic influence of the magnet block 28 in a dense state, but cannot effectively shield the magnetic influence of the magnet block 28 in a dispersed state.
In the invention, when a technician in a relevant state uses the valve, the valve body 1 is opened or closed through the rotation of the butterfly plate 3 along with the valve shaft 2, the valve body pressing plate ring 15, the butterfly plate sealing ring 19 and the graphite pad 20 are fixed on the butterfly plate 3 through bolts to realize convenient disassembly and replacement, the movable valve seat 16 is adjusted through the pressure adjusting jackscrew 18 and the pre-tightening spring 17, the butterfly plate 3 is closed and tightened to ensure the sealing performance when the butterfly plate is pressed forwards, the movable valve seat 16 is pushed by a medium to be in close contact with the butterfly plate pressing plate ring 21 to achieve the optimal sealing effect when the butterfly plate is pressed backwards, the disc-shaped butterfly plate 3 rotates around an axis in a cylindrical channel of the valve body 1, the rotating angle is between 0 and 90 degrees, the disc-shaped butterfly plate 3 is in a full-open state when the butterfly plate pressing plate ring 21 and the butterfly plate 3 stop liquid, and when the butterfly plate 21 and the butterfly plate 3 stop the butterfly plate to be impacted, the dispersion plate 23 disperses the liquid into a plurality of small bundles of liquid through the dispersion holes, make the impact force disperse, strike simultaneously on buffering hemisphere 24, disperse and strike movable magnetic ball 26 extrusion elasticity utricule 27 deformation of impacting, make it drive the powder dispersion of magnetic isolation, cancel the magnetic screen of magnet piece 28, offset the impact force through the repulsion between movable magnetic ball 26 and the magnet piece 28, further reduce and slow down the impact force, make butterfly plate clamp plate circle 21 and butterfly plate 3 difficult emergence damage, prolong its life.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (7)
1. The utility model provides a two-way high temperature butterfly valve of double eccentricity with high-efficient sealed effect, includes valve body (1), its characterized in that: the novel butterfly valve is characterized in that a split type butterfly plate mechanism (6) is arranged inside the valve body (1), a valve shaft (2) is arranged inside the valve body (1), two shaft sleeves (9) are sleeved outside the valve shaft (2), a support (4) is installed at the outer end of the valve body (1) through nuts, studs and gaskets, a packing gland (5) is installed at the outer end of the valve body (1), the packing gland (5) is connected with the support (4) through bolts, packing (8) is arranged between the packing gland (5) and the valve shaft (2), an end cover (7) is installed at the lower end of the valve body (1) through bolts, an end cover gasket (11) is arranged between the end cover (7) and the valve body (1), a split ring (12) is installed between the end cover (7) and the valve body (1), and the split type butterfly plate mechanism (6) comprises a butterfly plate (3) arranged inside the valve body (1), the butterfly plate (3) is fixedly connected with the valve shaft (2) through a pin (10), a butterfly plate pressing plate ring (21) is installed at the outer end of the butterfly plate (3) through a bolt, a butterfly plate sealing ring (19) is arranged between the butterfly plate (3) and the butterfly plate pressing plate ring (21), a graphite pad (20) is installed between the butterfly plate sealing ring (19) and the butterfly plate (3), the valve body (1) is provided with a valve pressing plate ring (15) through a bolt, a pressing sleeve (14) is installed at the outer end of the valve pressing plate ring (15), a high-temperature packing graphite (13) is installed at the outer end of the pressing sleeve (14), a movable valve seat (16) is installed between the butterfly plate (3) and the valve body (1), a pre-tightening spring (17) and a jackscrew (18) are respectively arranged between the valve pressing plate ring (15) and the movable valve seat (16), and an annular frame (22) is fixedly connected with the upper end of the butterfly plate pressing plate ring (21), the inside fixedly connected with dispersion plate (23) of annular frame (22), the outer end of dispersion plate (23) is opened and is dug the dispersed hole that has a plurality of evenly distributed, the outer end fixedly connected with buffering hemisphere (24) of butterfly plate clamp plate circle (21), buffering hemisphere (24) and annular frame (22) between a plurality of evenly distributed's of fixedly connected with linking pole (25), the outer end of linking pole (25) is overlapped respectively and is equipped with movable magnetic ball (26) and elasticity utricule (27), the outer end of elasticity utricule (27) respectively with annular frame (22) and movable magnetic ball (26) fixed connection, the inside fixedly connected with magnet piece (28) of elasticity utricule (27), the inside of elasticity utricule (27) is equipped with magnetic powder absolutely, the one end that activity magnetic ball (26) and magnet piece (28) are close to each other is repelled.
2. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the upper end and the lower end of the pressing sleeve (14) are both arranged in a V shape, and the lower end of the butterfly plate (3) is arranged in an arc shape.
3. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the step end face of the valve body pressing plate ring (15) is in contact with the end face of the movable valve seat (16), and the outer end of the movable valve seat (16) is in close contact with the graphite pad (20).
4. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the movable valve seat (16) adopts a movable bidirectional floating type circular arc surface sealing structure.
5. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the inner wall of the dispersion hole and the outer end of the buffer hemisphere (24) are both polished surfaces.
6. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the inner wall of the movable magnetic ball (26) is provided with two spherical grooves which are symmetrical up and down, the inner wall of each spherical groove is provided with a ball, and the outer end of each ball is in contact with the connecting rod (25).
7. The double eccentric bidirectional high-temperature butterfly valve with high-efficiency sealing effect according to claim 1, characterized in that: the magnetic isolation powder is made of Fe-Ni alloy powder materials, and the content of Ni in the magnetic isolation powder is 80%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210045330.7A CN114198512B (en) | 2022-01-15 | 2022-01-15 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
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| CN202210045330.7A CN114198512B (en) | 2022-01-15 | 2022-01-15 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
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| CN114198512B true CN114198512B (en) | 2022-07-29 |
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| CN202210045330.7A Active CN114198512B (en) | 2022-01-15 | 2022-01-15 | Double-eccentric bidirectional high-temperature butterfly valve with efficient sealing effect |
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| CN114776824A (en) * | 2022-05-25 | 2022-07-22 | 哈尔滨理工大学 | Buffering seal valve seat structure |
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| CN212643569U (en) * | 2020-06-19 | 2021-03-02 | 河南煜达阀门制造有限公司 | Bidirectional all-metal sealing butterfly valve with floating valve seat |
| CN213206597U (en) * | 2020-09-21 | 2021-05-14 | 天津阿姆流体设备制造有限公司 | Handle butt-clamping butterfly valve |
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2022
- 2022-01-15 CN CN202210045330.7A patent/CN114198512B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0043193A1 (en) * | 1980-07-01 | 1982-01-06 | Roger Bey | Valve |
| CN201496579U (en) * | 2009-09-10 | 2010-06-02 | 江南阀门有限公司 | Valve seat structure used for triple eccentric metal hard sealed butterfly valve |
| DE102012102472A1 (en) * | 2012-03-22 | 2013-09-26 | Leusch GmbH | Noiseless flap for control valve for use as actuator in control circuit of e.g. process liquid medium, has resistor structure formed in form of plates extending in direction of flap, where diameter of ball corresponds to diameter of seat |
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| CN211371314U (en) * | 2019-12-06 | 2020-08-28 | 刘静 | High-temperature-resistant bidirectional hard seal butterfly valve |
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| CN114198512A (en) | 2022-03-18 |
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Denomination of invention: A Double Eccentric Bidirectional High Temperature Butterfly Valve with Efficient Sealing Effect Effective date of registration: 20230809 Granted publication date: 20220729 Pledgee: Zhejiang Qingtian Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang Chaoyue Valve Co.,Ltd. Registration number: Y2023980051378 |
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