CN112066027A - Heat supply abrasion-resistant ball valve - Google Patents
Heat supply abrasion-resistant ball valve Download PDFInfo
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- CN112066027A CN112066027A CN202010939857.5A CN202010939857A CN112066027A CN 112066027 A CN112066027 A CN 112066027A CN 202010939857 A CN202010939857 A CN 202010939857A CN 112066027 A CN112066027 A CN 112066027A
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- valve clack
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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
- 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
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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
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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
- F16K1/44—Details of seats or valve members of double-seat 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift 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
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K5/0647—Spindles or actuating 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
- 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
- F16K5/0684—Packings on the plug
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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
- F16K5/0689—Packings between housing and plug
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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
- F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Abstract
The utility model provides a wear-resisting ball valve of heat supply, which comprises a valve body, the valve gap, the spheroid, outer valve rod, interior valve rod and valve clack subassembly and second valve clack subassembly, outer valve rod and spheroid fixed connection, interior valve rod is connected with first valve clack subassembly and second valve clack subassembly transmission, the surface of first valve clack and second valve clack is the sphere, the diameter of sphere is the same with spheroid surface diameter, when first valve clack and second valve clack are in the complete closure state, form smooth sphere with the spheroid surface, when first valve clack and second valve clack shrink into the spheroid inner chamber, can adjust fluid flow. When the two valve clacks are in a closed state, the outer surfaces of the valve clacks are overlapped with the outer surface of the ball body to form a smooth curved surface, edges and corners existing at the through hole of the ball body are eliminated, the ball body is prevented from scraping a valve seat sealing ring in the rotating process, the abrasion of the valve seat sealing ring is reduced, and in the moving process of the valve clacks, a gap between the inner cavity wall of the ball body and the valve clacks is gradually increased, so that the fine adjustment of the flow of the valve is realized.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a heat supply abrasion-resistant ball valve.
Background
Ball valves are a common type of valve used to control the opening and closing of fluid passages and are widely used in the industrial field. The ball valve generally comprises a valve body, a valve cover, a ball body, a valve seat sealing ring and a valve rod, wherein the valve seat sealing ring is usually made of elastic materials such as rubber and the like and forms elastic sealing with the ball body, however, in the rotating process of the ball body, the edge of a through hole of the ball body is provided with a sharp corner angle, and when the corner angle is contacted with the valve seat sealing ring, abrasion or scraping which is not beneficial to sealing can be generated, so that the valve seat sealing ring is easily damaged, the sealing performance and the service life of the valve seat sealing ring are greatly influenced, the valve seat sealing ring is frequently replaced, the normal use of the ball valve is influenced, especially when the medium temperature is higher, the strength of the rubber sealing ring can be influenced, the; meanwhile, the ball valve in the prior art adjusts the flow by rotating the ball body, so that the precision is poor, and fine flow regulation and control cannot be realized.
Disclosure of Invention
The invention aims to solve the technical problems and provides a ball valve which can be used for supplying heat, has small abrasion to a valve seat sealing element and can adjust the flow.
The technical scheme adopted by the invention for solving the technical problems is as follows: a heat-supplying wear-resistant ball valve comprising a valve body having an inlet passage, an outlet passage, an upper opening, and a central cavity between the inlet passage and the outlet passage; the valve cover is fixedly arranged at the top of the valve body and used for closing the upper opening; the ball body is arranged in the middle cavity, a ball body inner cavity is arranged in the ball body, and the ball body is provided with a first through hole for communicating the inlet channel with the ball body inner cavity and a second through hole for communicating the outlet channel with the ball body inner cavity; one end of the outer valve rod penetrates through the valve cover to be fixedly connected with the outer valve rod hand wheel, and the other end of the outer valve rod is fixedly connected with the ball body; the two valve seats are arranged on the valve body and comprise valve seat sealing rings and springs, and the two valve seats are respectively positioned on two sides of the ball body and are in sealing contact with the ball body; the first valve clack assembly comprises a first valve clack and a first transmission rod fixedly connected with the first valve clack, the first valve clack is used for plugging a first through hole, the first transmission rod is provided with a smooth section and a rack section, the smooth section is close to the first valve clack, and the rack section is far away from the first valve clack; the second valve flap assembly is provided with a second valve flap and a second transmission rod which have the same structures as the first valve flap and the first transmission rod, and the second valve flap is used for sealing the second through hole; the inner valve rod penetrates through the hollow outer valve rod, one end of the inner valve rod extends to the upper part of the outer valve rod hand wheel and is fixedly connected with the inner valve rod hand wheel, the other end of the inner valve rod penetrates through the sphere, a transmission gear is arranged at the end part of the other end of the inner valve rod and is positioned between the first transmission rod and the second transmission rod and is simultaneously meshed with the rack sections of the first transmission rod and the second transmission rod; the wall of the inner cavity of the sphere is also provided with a first guide rod and a second guide rod, the first guide rod and the second guide rod are both provided with guide holes, and the smooth sections of the first transmission rod and the second transmission rod are respectively installed in the guide holes of the first guide rod and the second guide rod in a sliding manner; the outer surfaces of the first valve clack and the second valve clack are spherical surfaces, the diameter of each spherical surface is the same as that of the outer surface of the sphere, and when the first valve clack and the second valve clack are in a fully closed state, the spherical surfaces and the outer surfaces of the spheres form smooth spherical surfaces.
Preferably, a first annular flange is arranged on the inner valve rod and is rotatably connected with the valve body through a bearing.
Preferably, the lower portion of the ball body is further fixedly provided with a lower valve rod, a second annular flange is arranged on the lower valve rod and is rotatably connected with the valve body through a bearing, an opening is formed in the bottom of the valve body, and an end cover is arranged at the opening.
Preferably, a first sealing filler is arranged between the inner valve rod and the outer valve rod, a fastening nut is arranged above the first sealing filler, the fastening nut is connected to the inner valve rod through threads, a second sealing filler is arranged between the outer valve rod and the valve body, a gland is arranged above the second sealing filler, and the gland is connected to the valve cover through threads.
Preferably, at least one O-ring is provided between the inner valve stem and the ball.
Preferably, a plurality of limiting protrusions are further arranged on the first valve clack and the second valve clack, annular limiting flanges are arranged at two ends of an inner cavity of the sphere, and the limiting protrusions are matched with the limiting flanges to limit the first valve clack and the second valve clack.
Preferably, when the first valve flap and the second valve flap are in a fully opened state, the inner side of the first valve flap abuts against the first guide rod, and the inner side of the second valve flap abuts against the second guide rod.
Preferably, the first and second flaps are circular flaps with a radius R.
Preferably, the inner cavity wall of the sphere is an ellipsoid, the major semi-axis of the ellipsoid is a, the middle semi-axis and the minor semi-axis are both b, the length of the first guide rod and the second guide rod is c, wherein,
compared with the prior art, the invention has the advantages that:
(1) the outer surface of first valve clack and second valve clack is the sphere, and the diameter of sphere is the same with spheroid surface diameter, and when two valve clacks were in the closure state, valve clack surface and spheroid surface coincidence had constituted glossy curved surface, had eliminated the edges and corners that spheroid through-hole department exists, prevented that the spheroid from rotating the in-process and scraping the disk seat sealing washer, has reduced disk seat sealing washer's wearing and tearing.
(2) When the spheroid is in the open mode, spheroid through-hole and valve body inlet channel, outlet channel intercommunication, drive first transfer line and second transfer line through rotating interior valve rod, make first valve clack and the synchronous retraction of second valve clack spheroid inner chamber, because spheroid inner chamber wall is the ellipsoid, at the in-process that the valve clack removed, the space between spheroid inner chamber wall and the valve clack is crescent, realize the meticulous regulation to valve flow, when adjusting ball valve flow, also do not influence the use of ball valve to maximum flow.
Drawings
Fig. 1 is a sectional view of a heat-supplying abrasion-resistant ball valve according to an embodiment of the present invention.
FIG. 2 is a side view of the first/second flap of an embodiment of the invention.
FIG. 3 is a cross-sectional view of a ball and flap according to an embodiment of the present invention.
Fig. 4 is a sectional view of a ball mounting structure according to an embodiment of the present invention.
In the figure, 1, a valve body, 2, a valve cover, 3, a first sealing filler, 4, a second sealing filler, 5, a gland, 6, an outer valve stem hand wheel, 7, an inner valve stem hand wheel, 8, an inner valve stem, 9, a fastening nut, 10, an outer valve stem, 11, a first annular flange, 12, a first guide rod, 13, a first valve clack, 14, an inlet channel, 15, a first transmission rod, 16, a spring, 17, a valve seat sealing ring, 18, a transmission gear, 19, a bearing, 20, an end cover, 21, a second annular flange, 22, a lower valve stem, 23, a limiting bulge, 24, a limiting flange, 25, a second transmission rod, 26, an outlet channel, 27, a second valve clack, 28, a sphere, 281, an upper sphere, 282, a lower sphere, 29, a second guide rod, 30, an O-ring, 31, a sphere inner cavity, 32, and a sphere inner cavity wall.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
In a wear-resistant ball valve for heating as shown in fig. 1, a valve body 1 has an inlet passage 14, an outlet passage 26, an upper opening through which internal components such as a ball 28, a valve seat, etc. can be fitted into a cavity of the valve body 1, and a middle cavity between the inlet passage 14 and the outlet passage 26; the valve cover 2 is fixedly arranged at the top of the valve body 1 and used for closing an upper opening; the ball 28 is arranged in the middle cavity, the ball inner cavity 31 is arranged in the ball 28, and the ball 28 is provided with a first through hole for communicating the inlet channel 14 with the ball inner cavity 31 and a second through hole for communicating the outlet channel 26 with the ball inner cavity 31; the outer valve rod 10 is a hollow rod body, one end of the outer valve rod 10 penetrates through the valve cover 2 to be fixedly connected with the outer valve rod hand wheel 6, and the other end of the outer valve rod 10 is fixedly connected with the ball body 28 through a bolt; two valve seats, which are arranged on the valve body 1 and comprise a valve seat sealing ring 17 and a spring 16, are respectively positioned at two sides of the ball 28 and are in sealing contact with the ball 28, and prevent fluid from leaking from a fluid channel into a cavity at the upper part or the lower part of the ball 28; the first valve clack assembly comprises a first valve clack 13 and a first transmission rod 15 fixedly connected with the first valve clack 13, the first valve clack 13 is used for plugging a first through hole, the first transmission rod 15 is provided with a smooth section and a rack section, the smooth section is close to the first valve clack 13, and the rack section is far away from the first valve clack 13; the second valve clack assembly is provided with a second valve clack 27 and a second transmission rod 25 which have the same structures as the first valve clack 13 and the first transmission rod 15, and the second valve clack 27 is used for plugging the second through hole; the inner valve rod 8 penetrates through the hollow outer valve rod 10, one end of the inner valve rod 8 extends to the upper part of the outer valve rod hand wheel 6 and is fixedly connected with the inner valve rod hand wheel 7, the other end of the inner valve rod 8 penetrates through the ball body 28, a transmission gear 18 is arranged at the end part of the other end of the inner valve rod 8, and the transmission gear 18 is positioned between the first transmission rod 15 and the second transmission rod 25 and is simultaneously meshed with the rack sections of the first transmission rod 15 and the second transmission rod 25; the inner cavity wall 32 of the sphere is further provided with a first guide rod 12 and a second guide rod 29, the first guide rod 12 and the second guide rod 29 are both provided with guide holes, smooth sections of a first transmission rod 15 and a second transmission rod 25 are respectively slidably mounted in the guide holes of the first guide rod 12 and the second guide rod 29, the first transmission rod 15 and the second transmission rod 25 synchronously move under the driving of a transmission gear 18, in an initial state, a first valve clack 13 and a second valve clack 27 are in a closed state and respectively block a first through hole and a second through hole of the sphere 28, when the inner valve rod 8 is rotated, a gear drives the first transmission rod 15 and the second transmission rod 25 to move oppositely, the first valve clack 13 and the second valve clack 27 are in an open state and retract into the inner cavity 31 of the sphere; the outer surfaces of the first valve clack 13 and the second valve clack 27 are spherical surfaces, the diameter of the spherical surface is the same as that of the spherical body 28, namely, the radian of the outer surfaces of the first valve clack 13 and the second valve clack 27 is the same as that of the outer surface of the spherical body 28, when the first valve clack 13 and the second valve clack 27 are in a completely closed state, the outer surfaces of the first valve clack 13 and the second valve clack 27 and the outer surface of the spherical body 28 can form a smooth spherical surface, so that the edge angle existing at the through hole of the spherical body 28 is eliminated, the valve seat sealing ring 17 is prevented from being scraped in the rotating process of the spherical body 28 when the outer valve rod 10.
A first annular flange 11 is arranged on the inner valve rod 8, and the first annular flange 11 is rotationally connected with the valve body 1 through a bearing 19; the lower part of the sphere 28 is also fixedly provided with a lower valve rod 22, the lower valve rod 22 is provided with a second annular flange 21, the second annular flange 21 is rotatably connected with the valve body 1 through a bearing 19, the bottom of the valve body 1 is provided with an opening, and the opening is provided with an end cover 20. The bearing 19 is arranged to facilitate the rotation of the inner valve rod 8 and the ball 28, so that the resistance to operation is reduced, and the end cover 20 is arranged to facilitate the installation of the lower valve rod 22 and the bearing 19.
Be equipped with first sealing filler 3 between interior valve rod 8 and the outer valve rod 10, first sealing filler 3 top is equipped with fastening nut 9, and fastening nut 9 is equipped with second sealing filler 4 through threaded connection on interior valve rod 8 between outer valve rod 10 and the valve body 1, and second sealing filler 4 top is equipped with gland 5, and gland 5 and valve gap 2 threaded connection are equipped with at least one O type circle 30 between interior valve rod 8 and the spheroid 28. By providing the sealing packing or the O-ring 30, the sealing performance of the entire valve can be improved, and the possibility of fluid leakage can be reduced.
As shown in fig. 2, a plurality of limiting protrusions 23 are further disposed on the first valve flap 13 and the second valve flap 27, annular limiting flanges 24 are disposed at two ends of the inner cavity 31 of the sphere, and the limiting protrusions 23 are matched with the limiting flanges 24 to limit the first valve flap 13 and the second valve flap 27. When the stop protrusion 23 abuts against the stop flange 24, the first valve flap 13 and the second valve flap 27 are just in the fully closed state, which facilitates the operation of the inner valve stem 8, and forms a smooth spherical surface on the outer surface of the sphere 28.
When the first valve clack 13 and the second valve clack 27 are in a fully opened state, the inner side of the first valve clack 13 abuts against the first guide rod 12, and the inner side of the second valve clack 27 abuts against the second guide rod 29, so that the movement of the first valve clack 13 and the second valve clack 27 is limited, and the excessive movement is prevented.
The first flap 13 and the second flap 27 are circular flaps with a radius R, which means that the first through hole and the second through hole of the inner sphere cavity 31 are also circular holes with a radius R, so that the first flap 13 and the second flap 27 can exactly coincide with the first through hole and the second through hole. The first flap assembly and the second flap assembly have the same structure except that there is a difference in installation position, that is, the first flap assembly is located at the left side of the inner cavity 31 of the sphere and the second flap assembly is located at the right side of the inner cavity 31 of the sphere, and the first transmission rod 15 is disposed opposite to the second transmission rod 25 while engaging with the transmission gear 18, thereby moving the first flap 13 and the second flap 27 in synchronization.
As shown in FIG. 3, the inner cavity wall 32 is an ellipsoid with a semi-major axis a, a semi-minor axis b, a length c of the first guide rod 12 and the second guide rod 29, a radius R of the first through hole and the second through hole, and a flow area S when the fluid enters the inner cavity 31 when the first valve flap 13 and the second valve flap 27 are opened0＝πR2. When the inner valve rod 8 is rotated to open the first valve clack 13 and the second valve clack 27, the first valve clack 13 and the second valve clack 27 are gradually retracted into the sphere inner cavity 31, gaps among the first valve clack 13, the second valve clack 27 and the sphere inner cavity wall 32 are gradually changed, the gaps are the minimum flow areas of fluid in the sphere inner cavity 31, in order to adjust the fluid flow rate of the first valve clack 13 and the second valve clack 27 and simultaneously not influence the use of the ball valve on the maximum flow rate, when the first valve clack 13 and the second valve clack 27 are in a fully opened state, the minimum flow areas are not smaller than the areas of the through holes of the sphere 28, namely when the valve clacks are in contact with the guide rod, the valve clacks are in the positions with the maximum opening, and at the moment, the flow areas1＝πc2/4-πR2>πR2To obtain
Therefore, when the ellipsoidal structure of the inner cavity 31 of the sphere is designed, the lengths of the major axis and the minor axis thereof are required to satisfy the above requirements.
As shown in fig. 4, as an embodiment of the ball mounting structure, the ball 28 is formed by an upper ball 281 and a lower ball 282 which are mounted by bolts, the lower portion of the upper ball 281 has a circular mounting opening, and the lower ball 282 is assembled by fitting the mounting opening, so that the upper ball 281 and the lower ball 282 form a complete ball; the lower ball 282 is positioned at the lower part of the middle cavity, the lower valve rod 22 is fixedly connected with the lower ball 282, and the valve seat assembly only contacts and seals with the upper ball 281; the diameter of the mounting opening is larger than that of the first valve clack 13 or the second valve clack 27, the first valve clack 13 and the second valve clack 27 can be installed in the inner cavity 31 of the sphere through the mounting opening, and a manual operation tool (such as a wrench, a screwdriver and the like) can also extend into the mounting opening for operation; the first and second transmission levers 15 and 25 are detachably connected to the first and second valve flaps 13 and 27, respectively, by bolts, and the first and second guide levers 12 and 29 are detachably connected to the inner wall of the upper sphere 281 by bolts, so that the operator can put various components in the sphere 28 into the sphere.
Referring to fig. 1 to 4, in the whole installation process of the ball valve, the first valve flap 13, the second valve flap 27, the first transmission rod 15, the second transmission rod 25, the first guide rod 12 and the second guide rod 29 are firstly installed in the upper ball 281, so that the first valve flap 13 and the second valve flap 27 are kept in a closed and guided state; then, the bearing, the first sealing packing 3 and the fastening nut 9 are sleeved on the inner valve rod 8, then, the inner valve rod 8 extends into the upper ball 281, the transmission gear 18 on the inner valve rod 8 is meshed with the first transmission rod 15 and the rack section of the second transmission rod 25, and then, the lower valve body 282 is installed; then, the outer valve rod 10 is sleeved on the inner valve rod 8, the outer valve rod 10 is fixedly connected with the upper ball 281 through bolts, the lower valve rod 22 is fixedly connected with the lower valve body 282, and meanwhile, the fastening nut 9 is screwed through an adaptive tool, so that the first sealing filler 3 is compressed, and good sealing performance is kept; then, the assembly of the ball body and the valve rod is arranged in a ball valve middle cavity, so that the ball body 28 is in sealing contact with the valve seat sealing ring 17; after the ball body and the valve rod are installed, the valve cover 2 is sleeved on the outer valve rod 10, the valve cover 2 is fixedly connected with the valve body 1 through bolts, and then the second sealing packing 4 and the gland 5 are installed, so that the sealing performance between the outer valve rod 10 and the valve cover 2 is improved; and finally, an outer valve stem hand wheel 6 and an inner valve stem hand wheel 7 are installed.
When the ball valve needs to be closed for a short time, only the inner valve rod 8 can be rotated to close the first valve flap 13 and the second valve flap 27, so that the fluid passage is closed, and the outer valve rod 10 does not need to be rotated, however, the sealing performance between the first valve flap 13 and the through hole of the ball 28 and the second valve flap 27 is not very reliable, the ball valve can bear long-term fluid action in the closed state, leakage can be caused, when the ball 28 needs to be closed for a long time, the inner valve rod 8 can be rotated to close the first valve flap 13 and the second valve flap 27, and then the outer valve rod 10 can be rotated to rotate the through hole of the ball 28 to an angle perpendicular to the inlet/outlet passage 26, so that the ball valve is closed, and the sealing reliability is improved when the ball valve is closed.
Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A heat-supplying wear-resistant ball valve comprising:
a valve body (1), said valve body (1) having an inlet passage (14), an outlet passage (26), an upper opening and a central cavity between said inlet passage (14) and said outlet passage (26);
the valve cover (2) is fixedly arranged at the top of the valve body (1) and used for closing the upper opening;
a ball (28), wherein the ball (28) is arranged in the middle cavity, a ball inner cavity (31) is arranged inside the ball (28), and the ball (28) is provided with a first through hole for communicating the inlet channel (14) with the ball inner cavity (31) and a second through hole for communicating the outlet channel (26) with the ball inner cavity (31);
one end of the outer valve rod (10) penetrates through the valve cover (2) and is fixedly connected with an outer valve rod hand wheel (6), and the other end of the outer valve rod (10) is fixedly connected with the ball body (28);
the two valve seats are arranged on the valve body (1) and comprise valve seat sealing rings (17) and springs (16), and the two valve seats are respectively positioned on two sides of the ball body (28) and are in sealing contact with the ball body (28);
the method is characterized in that:
the valve further comprises a first valve clack assembly, the first valve clack assembly comprises a first valve clack (13) and a first transmission rod (15) detachably connected with the first valve clack (13) through a bolt, the first valve clack (13) is used for blocking a first through hole, the first transmission rod (15) is provided with a smooth section and a rack section, the smooth section is close to the first valve clack (13), and the rack section is far away from the first valve clack (13);
the second valve flap assembly is provided with a second valve flap (27) and a second transmission rod (25) which have the same structures as the first valve flap (13) and the first transmission rod (15), and the second valve flap (27) is used for blocking a second through hole;
the inner valve rod (8) penetrates through the hollow outer valve rod (10), one end of the inner valve rod (8) extends to the upper part of the outer valve rod hand wheel (6) and is fixedly connected with the inner valve rod hand wheel (7), the other end of the inner valve rod penetrates through the ball body (28), a transmission gear (18) is arranged at the end part of the other end of the inner valve rod (8), and the transmission gear (18) is positioned between the first transmission rod (15) and the second transmission rod (25) and is simultaneously meshed with the rack sections of the first transmission rod (15) and the second transmission rod (25);
a first guide rod (12) and a second guide rod (29) are detachably connected to the inner cavity wall (32) of the sphere through bolts, guide holes are formed in the first guide rod (12) and the second guide rod (29), and smooth sections of the first transmission rod (15) and the second transmission rod (25) are slidably mounted in the guide holes of the first guide rod (12) and the second guide rod (29) respectively;
the outer surfaces of the first valve clack (13) and the second valve clack (27) are spherical surfaces, the diameter of each spherical surface is the same as that of the outer surface of the sphere (28), and when the first valve clack (13) and the second valve clack (27) are in a fully closed state, the spherical surfaces and the outer surfaces of the spheres (28) form smooth spherical surfaces.
2. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: the inner valve rod (8) is provided with a first annular flange (11), and the first annular flange (11) is rotatably connected with the valve body (1) through a bearing.
3. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: the ball body (28) lower part is still fixed and is equipped with lower valve rod (22), be equipped with second annular flange (21) on lower valve rod (22), second annular flange (21) pass through the bearing with valve body (1) rotate to be connected, valve body (1) bottom is equipped with the opening, and the opening part is equipped with end cover (20).
4. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: interior valve rod (8) with be equipped with first sealed filler (3) between outer valve rod (10), first sealed filler (3) top is equipped with fastening nut (9), fastening nut (9) pass through threaded connection and are in on interior valve rod (8), outer valve rod (10) with be equipped with second sealed filler (4) between valve body (1), second sealed filler (4) top is equipped with gland (5), gland (5) with valve gap (2) threaded connection.
5. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: at least one O-shaped ring (30) is arranged between the inner valve rod (8) and the ball body (28).
6. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: first valve clack (13) with still be equipped with a plurality of spacing archs (23) on second valve clack (27), spheroid (28) inner chamber both ends are equipped with annular spacing flange (24), spacing arch (23) with spacing flange (24) cooperate right first valve clack (13) with second valve clack (27) are spacing.
7. A heat-supplying wear-resistant ball valve as defined in claim 1, wherein: when the first valve clack (13) and the second valve clack (27) are in a fully opened state, the inner side of the first valve clack (13) abuts against the first guide rod (12), and the inner side of the second valve clack (27) abuts against the second guide rod (29).
8. A heat-supplying wear-resistant ball valve as defined in claim 7, wherein: the first flap (13) and the second flap (27) are circular flaps with a radius R.
9. A heat-supplying wear-resistant ball valve as defined in claim 8, wherein: the inner cavity wall (32) of the sphere is an ellipsoid, the major semi-axis of the inner cavity wall is a, the middle semi-axis and the minor semi-axis are b, the length of the first guide rod (12) and the second guide rod (29) is c,
10. a heat-supplying wear-resistant ball valve as defined in claim 1, wherein: the ball body (28) comprises an upper ball body (281) and a lower ball body (282), a circular mounting opening is formed in the lower portion of the upper ball body (281), the lower ball body (282) is fixedly mounted in the mounting opening through bolts, and the diameter of the mounting opening is larger than that of the first valve clack (13) and that of the second valve clack (27).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010939857.5A CN112066027B (en) | 2020-09-09 | 2020-09-09 | Heat supply abrasion-resistant ball valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010939857.5A CN112066027B (en) | 2020-09-09 | 2020-09-09 | Heat supply abrasion-resistant ball valve |
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| CN112066027B CN112066027B (en) | 2022-03-18 |
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| CN202010939857.5A Active CN112066027B (en) | 2020-09-09 | 2020-09-09 | Heat supply abrasion-resistant ball valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963570A (en) * | 2021-02-20 | 2021-06-15 | 东莞海特帕沃液压科技有限公司 | Anti-scouring ball valve |
| CN113187918A (en) * | 2021-05-28 | 2021-07-30 | 南通市电站阀门有限公司 | Valve core anti-scouring regulating valve |
| CN115031034A (en) * | 2022-06-07 | 2022-09-09 | 阿伐流体控制有限公司 | Wear-resisting C type ball valve |
| CN116989160A (en) * | 2023-09-26 | 2023-11-03 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
| CN118088720A (en) * | 2024-04-23 | 2024-05-28 | 福建贝得阀门有限公司 | Gate valve with long service life |
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| CN110159785A (en) * | 2019-06-19 | 2019-08-23 | 韩国昊 | A kind of improved ball valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963570A (en) * | 2021-02-20 | 2021-06-15 | 东莞海特帕沃液压科技有限公司 | Anti-scouring ball valve |
| CN113187918A (en) * | 2021-05-28 | 2021-07-30 | 南通市电站阀门有限公司 | Valve core anti-scouring regulating valve |
| CN113187918B (en) * | 2021-05-28 | 2024-02-27 | 南通市电站阀门有限公司 | Valve element scour prevention regulating valve |
| CN115031034A (en) * | 2022-06-07 | 2022-09-09 | 阿伐流体控制有限公司 | Wear-resisting C type ball valve |
| CN116989160A (en) * | 2023-09-26 | 2023-11-03 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
| CN116989160B (en) * | 2023-09-26 | 2023-12-12 | 山东益凯德液压股份有限公司 | High-balance eccentric rotary valve |
| CN118088720A (en) * | 2024-04-23 | 2024-05-28 | 福建贝得阀门有限公司 | Gate valve with long service life |
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|---|---|
| CN112066027B (en) | 2022-03-18 |
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Address after: 323000 No. 801, Wenyi Road, Bihu Industrial Zone, Liandu District, Lishui City, Zhejiang Province Applicant after: Ticos Technology Group Lishui fluid equipment Co.,Ltd. Address before: 300000 No. 8, Kaiyuan Road, Zhonglian Industrial Park, automobile industrial zone, Xiqing District, Tianjin Applicant before: TIX TECHNOLOGY GROUP TIANJIN FLUID EQUIPMENT Co.,Ltd. |
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Denomination of invention: A wear-resistant ball valve for heating Effective date of registration: 20230605 Granted publication date: 20220318 Pledgee: Lishui branch of Bank of Hangzhou Co.,Ltd. Pledgor: Ticos Technology Group Lishui fluid equipment Co.,Ltd. Registration number: Y2023980042826 |
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