Horizontal shaft eccentric half ball valve
By introducing an arc-shaped protective plate and a filter cleaning component into the eccentric hemispherical valve, the problems of high-speed flow and impurity wear are solved, achieving the effects of self-cleaning filtration and wear prevention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA VALVE HLDG (GRP) CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-06-02
AI Technical Summary
Existing eccentric hemispherical valves are prone to wear on the sealing surface due to high-speed flow and impurities during the initial opening and final closing stages, and the filtration function cannot self-clean.
A horizontal shaft eccentric hemispherical valve was designed, which adopts an arc-shaped protective plate and a filter cleaning component. The arc-shaped protective plate prevents impurities from wearing the sealing surface, and the vibration cleaning component and anti-clogging component are used to achieve self-cleaning filtration.
It effectively prevents impurities from wearing down the internal components of the valve, and maintains smooth flow through the valve through its self-cleaning function, reducing the risk of blockage.
Smart Images
Figure CN122129560A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of valve technology, specifically a horizontal shaft eccentric hemispherical valve. Background Technology
[0002] Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media, and are widely used in petroleum, chemical, metallurgical, textile, food, nuclear energy, and aerospace industries. Eccentric hemispherical valves, developed from eccentric butterfly valves and hemispherical valves, are rotary shut-off valves designed for media containing particles, and have become an industry standard. They employ a double eccentric structure and a hemispherical valve core, with the sealing surface only contacting momentarily during opening and closing, achieving low friction and low torque operation. They feature full-bore operation, low flow resistance, self-cleaning, and anti-jamming properties. However, eccentric hemispherical valves generate excess flow at the initial opening and final closing stages. This high flow velocity, combined with trace impurities in the medium, can scratch the sealing surface, and larger impurities can cause wear on internal valve components. While some eccentric hemispherical valves have filtration capabilities, they lack the self-cleaning function of the filtration system. Summary of the Invention
[0003] The purpose of this invention is to provide a horizontal shaft eccentric hemispherical valve to solve the problems mentioned in the prior art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: The horizontal shaft type eccentric hemispherical valve includes a valve body, a valve cavity is provided inside the valve body, an inlet and an outlet connected to the valve cavity are installed on both sides of the valve body, an eccentric valve ball is rotatably installed inside the valve cavity, a spherical crown is installed at the circumferential stepped part of the eccentric valve ball, an upper valve stem and a lower valve stem are rotatably installed on both sides of the valve body perpendicular to the axis of the inlet and outlet, and the upper valve stem and the lower valve stem are respectively connected to the rotating part of the eccentric valve ball, an installation port is provided at the top of the valve body, a valve cover is installed on the installation port, a sealing element and a protective component are provided inside the outlet, and a filter cleaning component is provided at the inlet; The protective assembly includes an arc-shaped mounting base, a mounting groove, a spring rod, and an arc-shaped protective plate; An arc-shaped mounting seat is installed on the inner wall of the valve cavity near the outlet. An installation groove is provided on the arc-shaped mounting seat, and an arc-shaped protective plate is slidably installed within the installation groove. The arc-shaped mounting seat and the arc-shaped protective plate are connected by a spring rod. After the valve body is installed on the pipeline, the flow of the medium in the pipeline is controlled by driving the opening and closing of the eccentric valve ball. When the valve is open, the upper valve stem is driven to rotate by the actuator, thereby rotating the eccentric valve ball. Its maximum rotation angle is 90°, and the rotation direction is such that the spherical surface of the eccentric valve ball is close to the valve cover. In the initial stage of valve opening or the final stage of valve closing, the gap between the ball crown and the sealing element is small, and the liquid flow velocity is high. The high-speed jet carries impurities that impact the sealing surface of the top ball crown in the rotation direction and the back of the bottom eccentric valve ball in the rotation direction, causing the ball crown to detach from the sealing element and then contact and press against the arc-shaped protective plate. The part of the arc-shaped protective plate that presses against the spring rod is submerged in the installation groove, maintaining contact with the ball crown without creating rigid contact. At the same time, a filter cleaning component prevents impurities in the water from causing wear on the internal components of the valve.
[0005] As a preferred technical solution, the filter cleaning assembly includes a shorting connector, a front retaining ring, a rear retaining ring, a rotating shaft, a ball seat, a wave groove, a fixed filter screen, a clamping rod, a vibration cleaning component, and an anti-clogging component; A short connector is installed at the liquid inlet, and a front retaining ring and a rear retaining ring are installed inside the short connector. The front and rear retaining rings are connected by a connecting rod. The inner ring of the rear retaining ring has a wave groove. A rotating shaft is rotatably installed between the front and rear retaining rings. A spherical seat is installed on the shaft section of the rear retaining ring. A fixed filter screen is rotatably installed on the spherical seat. A locking rod is installed on the fixed filter screen. The locking rod is slidably embedded in the wave groove. Vibration cleaning components and anti-clogging components are respectively provided on both sides of the fixed filter screen. When the fluid in the pipe passes through the fixed filter screen, some impurities in the liquid are intercepted. At this time, the vibration cleaning component periodically taps one side of the fixed filter screen to make it vibrate and prevent impurities from adhering to the surface of the fixed filter screen and being pressed by the liquid pressure to cause blockage. At the same time, under the impact of the vibration cleaning component, the fixed filter screen shakes on the spherical seat. The angle of the shaking does not exceed the limit of the wave groove. When the fixed filter screen shakes, it changes its angle and uses water flow to wash its surface. Then it is reset by the pressure of the water flow, thereby achieving the effect of filtration and self-cleaning.
[0006] As a preferred technical solution, the vibration cleaning component includes a fixed ring, a rotating groove, a swing arm, a hammer, a connecting rod, a blade, a drive groove, and a contact rod; A fixed ring is rotatably mounted at one end of the rotating shaft near the valve cavity. The fixed ring is fixed to the rear retaining ring by a connecting rod. At least two rotating grooves are evenly opened along the circumferential direction on the fixed ring. The rotating grooves connect the inner wall and the outer wall of the fixed ring. A swing rod is rotatably mounted in the rotating groove. A hammer is installed at the top of the swing rod. A drive groove is opened on the rotating shaft at the bottom of the fixed ring. A contact rod is slidably mounted at the bottom of the swing rod. The end of the contact rod is embedded in the drive groove. A blade is installed at the end of the rotating shaft near the valve cavity. When liquid flows through the valve in the pipeline, the liquid drives the blade to rotate. The blade drives the rotating shaft to rotate, causing the drive groove to drive the swing rod to swing. The contact rod slides and extends at the bottom of the swing rod, so that the distance from the swing center to the drive groove varies during the swing. The drive groove should have at least one section that is a sine function curve or a cosine function curve so that the swing rod can reciprocate under the rotation of the drive groove.
[0007] As a preferred technical solution, the anti-blocking component includes a slip ring, a sliding sleeve, a mounting bracket, a plug-in, and a reciprocating groove; A slip ring is slidably mounted on the side of the rotating shaft away from the valve cavity. A sliding sleeve is rotatably mounted on the slip ring. A mounting bracket is mounted on the sliding sleeve. An insert is mounted on the mounting bracket. A reciprocating groove is opened on the shaft section away from the valve cavity. When the rotating shaft rotates, the rotation of the reciprocating groove drives the slip ring to reciprocate on the rotating shaft, thereby driving the insert on the mounting bracket to prevent blockage and unclog the fixed filter screen. The mounting bracket may simply be a rod connecting multiple inserts and the sliding sleeve to reduce resistance to water flow.
[0008] As a preferred technical solution, the sealing element includes an elastic top member, a valve seat, a mounting hole, a sealing ring, and a pressure ring; A valve seat is slidably installed on the inner stepped part of the outlet. An installation hole is opened on one side of the valve seat, and an elastic top is installed in the installation hole. One side of the elastic top is fixed to the inner stepped surface of the outlet. A sealing ring and a pressure ring are installed on the side of the valve seat away from the outlet. The sealing ring presses the pressure ring tightly. When the eccentric valve ball is in the closed state, the ball crown is in close contact with the sealing ring. When the eccentric valve ball is closed, the ball crown contacts and squeezes the sealing ring, and at the same time, the valve seat compresses the elastic top near the inner stepped surface of the outlet, so that the sealing ring and the ball crown are tightly fitted.
[0009] As a preferred technical solution, the elastic top member is a return spring.
[0010] As a preferred technical solution, the cross-section of the spherical cap is a right trapezoid, and the corners of the hypotenuse of the trapezoid are all rounded.
[0011] As a preferred technical solution, the arc of the arc-shaped mounting base is less than 180° and is symmetrical about the inlet and outlet axes.
[0012] As a preferred technical solution, a cleaning pipe is installed at the bottom of the short connector, and a plug is threadedly installed at the outlet of the cleaning pipe.
[0013] As a preferred technical solution, the valve cover is equipped with lifting lugs for hoisting.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. After the valve body is installed on the pipeline, in the initial stage of valve opening or the final stage of valve closing, the gap between the ball crown and the sealing element is small, the flow velocity of the liquid is fast, and the high-speed jet carrying impurities impacts the sealing surface of the top ball crown in the direction of rotation and the back of the bottom eccentric valve ball in the direction of rotation. At this time, the ball crown separates from the sealing element and then contacts and is squeezed by the arc-shaped protective plate. The part of the arc-shaped protective plate that squeezes the spring rod is submerged in the mounting groove to keep it in contact with the ball crown without making rigid contact with it. At the same time, the filter cleaning component prevents impurities in the water from causing wear on the internal parts of the valve.
[0015] 2. In this application, when the fluid in the pipe passes through the fixed filter screen, some impurities in the liquid are intercepted. At this time, the vibrating cleaning component periodically taps one side of the fixed filter screen to make it vibrate, preventing impurities from adhering to the surface of the fixed filter screen and being pressed by the liquid pressure to cause blockage. At the same time, under the impact of the vibrating cleaning component, the fixed filter screen shakes on the spherical seat, and the angle of shaking does not exceed the limit of the oscillation groove. When the fixed filter screen shakes, it changes its angle and uses water flow to wash its surface, and is then reset by the pressure of the water flow, thereby achieving the effect of filtration and self-cleaning.
[0016] 3. In this application, when liquid flows through the valve in the pipeline, the liquid drives the blade to rotate, which in turn drives the shaft to rotate, causing the drive groove to swing the rocker arm. The contact rod slides and extends at the bottom of the rocker arm, allowing the distance from the swing center to the drive groove to change adaptively during the swing. The drive groove should have at least one section that is a sine function curve or a cosine function curve so that the rocker arm can reciprocate under the rotation of the drive groove. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the valve closure structure of the present invention; Figure 2 This is a schematic diagram of the valve opening structure of the present invention; Figure 3 This is a schematic diagram of the first half-section structure of the present invention; Figure 4 This is a schematic diagram of the second half-section structure of the present invention; Figure 5 This is a first-view structural schematic diagram of the filter cleaning component of the present invention; Figure 6 This is a second-view structural schematic diagram of the filter cleaning component of the present invention; Figure 7 This is a cross-sectional structural diagram of the filter cleaning component of the present invention; Figure 8 for Figure 3 Enlarged schematic diagram of point A in the diagram; Figure 9 for Figure 4 Enlarged structural diagram at point B in the diagram; Figure 10 for Figure 7 A magnified structural diagram at point C in the diagram.
[0018] In the diagram: 1. Valve body; 101. Valve chamber; 102. Liquid inlet; 103. Liquid outlet; 104. Eccentric valve ball; 1041. Ball crown; 105. Valve cover; 106. Upper valve stem; 107. Lower valve stem; 2. Sealing element; 201. Resilient top element; 202. Valve seat; 2021. Mounting hole; 203. Sealing ring; 204. Pressure ring; 3. Protective components; 301. Arc-shaped mounting base; 302. Mounting groove; 303. Spring rod; 304. Arc-shaped protective plate; 4. Filter cleaning assembly; 401. Short circuit; 4011. Impurity removal pipe; 4012. Plug; 402. Front retaining ring; 403. Rear retaining ring; 404. Rotating shaft; 4041. Ball seat; 4042. Drive groove; 405. Fluctuating groove; 406. Fixed filter screen; 407. Clamping rod; 408. Vibrating cleaning component; 4081. Fixing ring; 4082. Rotating groove; 4083. Swing rod; 4084. Hammer head; 4085. Connecting rod; 4086. Paddle blade; 4087. Contact rod; 409. Anti-blocking component; 4091. Slip ring; 4092. Sliding sleeve; 4093. Mounting bracket; 4094. Insert; 4095. Reciprocating groove. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Example: Figures 1-4 and Figure 8As shown, the present invention provides a technical solution for a horizontal shaft eccentric hemispherical valve. The horizontal shaft eccentric hemispherical valve includes a valve body 1, a valve cavity 101 is provided inside the valve body 1, an inlet 102 and an outlet 103 connected to the valve cavity 101 are installed on both sides of the valve body 1, an eccentric valve ball 104 is rotatably installed inside the valve cavity 101, a spherical crown 1041 is installed at the circumferential step of the eccentric valve ball 104, an upper valve stem 106 and a lower valve stem 107 are rotatably installed on both sides of the valve body 1 perpendicular to the axis of the inlet 102 and the outlet 103, and the upper valve stem 106 and the lower valve stem 107 are respectively connected to the rotation part of the eccentric valve ball 104, an installation port is provided at the top of the valve body 1, a valve cover 105 is installed on the installation port, a sealing element 2 and a protective component 3 are provided inside the outlet 103, and a filter cleaning component 4 is provided at the inlet 102. The protective component 3 includes an arc-shaped mounting base 301, a mounting groove 302, a spring rod 303, and an arc-shaped protective plate 304; An arc-shaped mounting seat 301 is installed on the inner wall of the valve cavity 101 near the outlet 103. An installation groove 302 is provided on the arc-shaped mounting seat 301, and an arc-shaped protective plate 304 is slidably installed in the installation groove 302. The arc-shaped mounting seat 301 and the arc-shaped protective plate 304 are connected by a spring rod 303. After the valve body 1 is installed on the pipeline, the flow of the medium in the pipeline is controlled by driving the opening and closing of the eccentric valve ball 104. When the valve is open, the upper valve stem 106 is driven to rotate by the actuator, thereby driving the eccentric valve ball 104 to rotate. Its maximum rotation angle is 90°, and the rotation direction is to bring the spherical surface of the eccentric valve ball 104 closer to the valve cover. In the direction of 105, at the initial stage of valve opening or the final stage of valve closing, the gap between the ball crown 1041 and the seal 2 is small, the liquid flow velocity is fast, and the high-speed jet carrying impurities impacts the sealing surface of the top ball crown 1041 in the rotation direction and the back of the bottom eccentric valve ball 104 in the rotation direction respectively. The ball crown 1041 separates from the seal 2 and then contacts and is squeezed by the arc-shaped protective plate 304. The arc-shaped protective plate 304 squeezes the spring rod 303 part into the mounting groove 302 to keep it in contact with the ball crown 1041 without making rigid contact with it. At the same time, the filter cleaning component 4 prevents impurities in the water from causing wear on the internal parts of the valve.
[0021] like Figures 2-7 and Figure 10 As shown, the filter cleaning assembly 4 includes a shorting connector 401, a front retaining ring 402, a rear retaining ring 403, a rotating shaft 404, a ball seat 4041, a wave groove 405, a fixed filter screen 406, a locking rod 407, a vibrating cleaning component 408, and an anti-clogging component 409. A shorting connector 401 is installed at the liquid inlet 102. A front retaining ring 402 and a rear retaining ring 403 are installed inside the shorting connector 401 and are connected by a connecting rod. The inner ring of the rear retaining ring 403 has a wave groove 405. A rotating shaft 404 is rotatably installed between the front retaining ring 402 and the rear retaining ring 403. A ball seat 4041 is installed on the shaft section of the rotating shaft 404 located on the rear retaining ring 403. A fixed filter screen 406 is rotatably installed on the ball seat 4041. A locking rod 407 is installed on the fixed filter screen 406 and slides within the wave groove 405. Vibration cleaning devices are provided on both sides of the fixed filter screen 406. With components 408 and 409, when the fluid in the pipe passes through the fixed filter screen 406, some impurities in the liquid are intercepted. At this time, the vibrating cleaning component 408 periodically taps one side of the fixed filter screen 406 to make it vibrate and prevent impurities from adhering to the surface of the fixed filter screen 406 and being pressed by the liquid pressure to cause blockage. At the same time, under the impact of the vibrating cleaning component 408, the fixed filter screen 406 shakes on the spherical seat 4041, and the angle of shaking does not exceed the limit of the oscillation groove 405. When the fixed filter screen 406 shakes, it changes its angle and uses water flow to wash its surface, and is then reset by the pressure of the water flow, thereby achieving the effect of filtration and self-cleaning.
[0022] The vibrating cleaning component 408 includes a fixed ring 4081, a rotating groove 4082, a swing arm 4083, a hammer head 4084, a connecting rod 4085, a paddle blade 4086, a drive groove 4042, and a contact rod 4087. A retaining ring 4081 is rotatably mounted on one end of the rotating shaft 404 near the valve chamber 101. The retaining ring 4081 is fixed to the rear retaining ring 403 by a connecting rod 4085. At least two rotating grooves 4082 are evenly formed along the circumferential direction on the retaining ring 4081. The rotating grooves 4082 connect the inner wall and the outer wall of the retaining ring 4081. A rocker arm 4083 is rotatably mounted in the rotating groove 4082. A hammer head 4084 is mounted on the top of the rocker arm 4083. A drive groove 4042 is formed on the rotating shaft 404 at the bottom of the retaining ring 4081. A contact rod 4087 is slidably mounted on the bottom of the rocker arm 4083. The end of the contact rod 4087 is embedded in the drive groove 4084. Inside 042, a paddle 4086 is installed at the end of the rotating shaft 404 near the valve chamber 101. When liquid flows through the valve in the pipeline, the liquid drives the paddle 4086 to rotate. The paddle 4086 drives the rotating shaft 404 to rotate, causing the drive groove 4042 to drive the rocker arm 4083 to swing. The rocker arm 4083 slides at the bottom of the rocker arm 4083 through the contact rod 4087, so that the distance from the swing center of the rocker arm 4083 to the drive groove 4042 varies during the swing process. The drive groove 4042 should have at least one section that is a sine function curve or a cosine function curve so that the rocker arm 4083 can reciprocate under the rotation of the drive groove 4042.
[0023] The anti-clogging component 409 includes a slip ring 4091, a sliding sleeve 4092, a mounting bracket 4093, a plug-in 4094, and a reciprocating groove 4095; A slip ring 4091 is slidably mounted on the side of the rotating shaft 404 away from the valve chamber 101. A sliding sleeve 4092 is rotatably mounted on the slip ring 4091. A mounting bracket 4093 is mounted on the sliding sleeve 4092. An insert 4094 is mounted on the mounting bracket 4093. A reciprocating groove 4095 is opened on the shaft section of the rotating shaft 404 away from the valve chamber 101. When the rotating shaft 404 rotates, the rotation of the reciprocating groove 4095 drives the slip ring 4091 to reciprocate on the rotating shaft 404, thereby driving the insert 4094 on the mounting bracket 4093 to prevent blockage and unblock the fixed filter screen 406. The mounting bracket 4093 can be just a rod connecting multiple inserts 4094 and the sliding sleeve 4092 to reduce resistance to water flow.
[0024] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the sealing element 2 includes an elastic top element 201, a valve seat 202, a mounting hole 2021, a sealing ring 203, and a pressure ring 204; A valve seat 202 is slidably installed on the inner stepped surface of the outlet 103. A mounting hole 2021 is provided on one side of the valve seat 202, and an elastic top member 201 is installed in the mounting hole 2021. One side of the elastic top member 201 is fixed to the inner stepped surface of the outlet 103. A sealing ring 203 and a pressure ring 204 are installed on the side of the valve seat 202 away from the outlet 103. The sealing ring 203 presses the pressure ring 204 tightly. When the eccentric valve ball 104 is in the closed state, the ball crown 1041 is pressed against the sealing ring 203. When the eccentric valve ball 104 is closed, the ball crown 1041 contacts and squeezes the sealing ring 203, and at the same time, the valve seat 202 compresses the elastic top member 201 closer to the inner stepped surface of the outlet 103, so that the sealing ring 203 and the ball crown 1041 are tightly fitted.
[0025] The elastic top component 201 is a return spring.
[0026] The cross-section of the spherical crown 1041 is a right trapezoid, and the corners of the hypotenuse of the trapezoid are all rounded.
[0027] The arc of the arc-shaped mounting base 301 is less than 180°, and it is symmetrical about the axes of the liquid inlet 102 and the liquid outlet 103.
[0028] The valve cover 105 is equipped with lifting lugs for hoisting.
[0029] A cleaning pipe 4011 is installed at the bottom of the short-circuit 401, and a plug 4012 is threaded at the outlet of the cleaning pipe 4011.
[0030] Working principle of the invention: After the valve body 1 is installed on the pipeline, the flow of the medium in the pipeline is controlled by driving the opening and closing of the eccentric valve ball 104. When the valve is open, the upper valve stem 106 is driven to rotate by the actuator, thereby driving the eccentric valve ball 104 to rotate. Its maximum rotation angle is 90°. The rotation direction is to bring the spherical surface of the eccentric valve ball 104 closer to the valve cover 105. At the initial stage of valve opening or the end of valve closing, the gap between the ball crown 1041 and the sealing element 2 is small, and the liquid flow velocity is fast. The high-speed jet carries impurities and impacts the sealing surface of the top ball crown 1041 in the rotation direction and the back of the bottom eccentric valve ball 104 in the rotation direction. The ball crown 1041 separates from the sealing element 2 and then contacts and squeezes the arc-shaped protective plate 304. The part of the arc-shaped protective plate 304 that squeezes the spring rod 303 is submerged in the mounting groove 302 to keep it in contact with the ball crown 1041 without making rigid contact with it. At the same time, the filter cleaning component 4 prevents impurities in the water from causing wear on the internal parts of the valve.
[0031] When the fluid in the pipe passes through the fixed filter screen 406, some impurities in the liquid are intercepted. At this time, the vibrating cleaning component 408 periodically taps one side of the fixed filter screen 406 to make it vibrate and prevent impurities from adhering to the surface of the fixed filter screen 406 and being pressed by the liquid pressure to cause blockage. At the same time, under the tapping and impact of the vibrating cleaning component 408, the fixed filter screen 406 shakes on the spherical seat 4041, and the angle of shaking does not exceed the limit of the oscillation groove 405. When the fixed filter screen 406 shakes, it changes its angle and uses water flow to wash its surface, and is then reset by the pressure of the water flow, thereby achieving the effect of filtration and self-cleaning.
[0032] When liquid flows through the valve in the pipeline, the liquid drives the blade 4086 to rotate. The blade 4086 drives the shaft 404 to rotate, which in turn drives the drive groove 4042 to swing the rocker arm 4083. The rocker arm 4083 slides and extends at the bottom of the rocker arm 4083 through the contact rod 4087, so that the distance from the swing center of the rocker arm 4083 to the drive groove 4042 varies during the swinging process. The drive groove 4042 should have at least one section that is a sine function curve or a cosine function curve so that the rocker arm 4083 can reciprocate under the rotation of the drive groove 4042.
[0033] When the rotating shaft 404 rotates, the rotation of the reciprocating groove 4095 drives the slip ring 4091 to reciprocate on the rotating shaft 404, thereby driving the plug 4094 on the mounting bracket 4093 to prevent blockage and unblock the fixed filter screen 406. The mounting bracket 4093 can be just a rod connecting multiple plugs 4094 and the sliding sleeve 4092 to reduce resistance to water flow.
[0034] When the eccentric valve ball 104 is closed, the ball crown 1041 contacts and squeezes the sealing ring 203, while the valve seat 202 compresses the elastic top 201 close to the inner stepped surface of the outlet 103, so that the sealing ring 203 and the ball crown 1041 fit tightly together.
[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A horizontal shaft type eccentric hemispherical valve, characterized in that: The horizontal shaft type eccentric hemispherical valve includes a valve body (1), a valve cavity (101) is provided inside the valve body (1), and an inlet (102) and an outlet (103) connected to the valve cavity (101) are installed on both sides of the valve body (1). An eccentric valve ball (104) is rotatably installed inside the valve cavity (101), and a spherical crown (1041) is installed at the circumferential step of the eccentric valve ball (104), perpendicular to the axis of the inlet (102) and the outlet (103). The valve body (1) is rotatably mounted with an upper valve stem (106) and a lower valve stem (107) on both sides, and the upper valve stem (106) and the lower valve stem (107) are respectively connected to the rotating part of the eccentric valve ball (104). The valve body (1) has an installation port at the top, and a valve cover (105) is installed on the installation port. A sealing element (2) and a protective component (3) are provided inside the liquid outlet (103), and a filter cleaning component (4) is provided at the liquid inlet (102). The protective component (3) includes an arc-shaped mounting base (301), a mounting groove (302), a spring rod (303), and an arc-shaped protective plate (304). An arc-shaped mounting seat (301) is installed on the inner wall of the valve cavity (101) near the liquid outlet (103). An installation groove (302) is provided on the arc-shaped mounting seat (301). An arc-shaped protective plate (304) is slidably installed in the installation groove (302). The arc-shaped mounting seat (301) and the arc-shaped protective plate (304) are connected by a spring rod (303).
2. The horizontal shaft eccentric hemispherical valve according to claim 1, characterized in that: The filter cleaning assembly (4) includes a shorting connector (401), a front retaining ring (402), a rear retaining ring (403), a rotating shaft (404), a ball seat (4041), a wave groove (405), a fixed filter screen (406), a locking rod (407), a vibrating cleaning component (408), and an anti-clogging component (409). A short connector (401) is installed at the liquid inlet (102). A front retaining ring (402) and a rear retaining ring (403) are installed in the short connector (401). The front retaining ring (402) and the rear retaining ring (403) are connected by a connecting rod. A wave groove (405) is opened on the inner ring of the rear retaining ring (403). A rotating shaft (404) is rotatably installed between the front retaining ring (402) and the rear retaining ring (403). A spherical seat (4041) is installed on the shaft section of the rotating shaft (404) located on the rear retaining ring (403). A fixed filter screen (406) is rotatably installed on the spherical seat (4041). A locking rod (407) is installed on the fixed filter screen (406). The locking rod (407) is slidably embedded in the wave groove (405). A vibration cleaning component (408) and an anti-clogging component (409) are respectively provided on both sides of the fixed filter screen (406).
3. A horizontal shaft eccentric hemispherical valve according to claim 2, characterized in that: The vibrating cleaning component (408) includes a fixed ring (4081), a rotating groove (4082), a swing arm (4083), a hammer (4084), a connecting rod (4085), a blade (4086), a drive groove (4042), and a contact rod (4087). A fixing ring (4081) is rotatably mounted on one end of the rotating shaft (404) near the valve chamber (101). The fixing ring (4081) is fixed to the rear retaining ring (403) by a connecting rod (4085). At least two rotating grooves (4082) are evenly opened along the circumferential direction on the fixing ring (4081). The rotating grooves (4082) connect the inner wall and the outer wall of the fixing ring (4081). A swing rod is rotatably mounted in the rotating groove (4082). 4083), a hammer (4084) is installed at the top of the swing arm (4083), a drive groove (4042) is provided on the rotating shaft (404) at the bottom of the fixed ring (4081), a contact rod (4087) is slidably installed at the bottom of the swing arm (4083), the end of the contact rod (4087) is embedded in the drive groove (4042), and a blade (4086) is installed at the end of the rotating shaft (404) near the valve chamber (101).
4. A horizontal shaft eccentric hemispherical valve according to claim 2, characterized in that: The anti-clogging component (409) includes a slip ring (4091), a sliding sleeve (4092), a mounting bracket (4093), a plug (4094), and a reciprocating groove (4095). A slip ring (4091) is slidably mounted on the side of the rotating shaft (404) away from the valve cavity (101). A sliding sleeve (4092) is rotatably mounted on the slip ring (4091). A mounting bracket (4093) is mounted on the sliding sleeve (4092). A plug (4094) is mounted on the mounting bracket (4093). A reciprocating groove (4095) is opened on the shaft section of the rotating shaft (404) away from the valve cavity (101).
5. A horizontal shaft eccentric hemispherical valve according to claim 1, characterized in that: The sealing element (2) includes an elastic top (201), a valve seat (202), a mounting hole (2021), a sealing ring (203), and a pressure ring (204); A valve seat (202) is slidably installed on the inner stepped part of the outlet (103). An installation hole (2021) is provided on one side of the valve seat (202). An elastic top member (201) is installed in the installation hole (2021). One side of the elastic top member (201) is fixed to the inner stepped surface of the outlet (103). A sealing ring (203) and a pressure ring (204) are installed on the side of the valve seat (202) away from the outlet (103). The sealing ring (203) presses the pressure ring (204) tightly. When the eccentric valve ball (104) is in the closed state, the ball crown (1041) is pressed tightly against the sealing ring (203).
6. A horizontal shaft eccentric hemispherical valve according to claim 5, characterized in that: The elastic top element (201) is a return spring.
7. A horizontal shaft eccentric hemispherical valve according to claim 6, characterized in that: The cross section of the spherical cap (1041) is a right trapezoid, and the corners of the hypotenuse of the trapezoid are all rounded.
8. A horizontal shaft eccentric hemispherical valve according to claim 1, characterized in that: The arc-shaped mounting base (301) has an arc of less than 180° and is symmetrical about the inlet (102) and outlet (103) axes.
9. A horizontal shaft eccentric hemispherical valve according to claim 1, characterized in that: The valve cover (105) is equipped with lifting lugs for hoisting.
10. A horizontal shaft eccentric hemispherical valve according to claim 2, characterized in that: The bottom of the short connector (401) is equipped with a cleaning pipe (4011), and a plug (4012) is threaded onto the outlet of the cleaning pipe (4011).