CN211117748U - Eccentric rotary regulating valve - Google Patents

Abstract

The utility model discloses an eccentric rotary regulating valve, case are the U-shaped of 90, and the U-shaped bottom is the head of case, case head one end is the sphere, and the vertical section of U-shaped is the case auricle respectively, be provided with the valve stem hole on the auricle, the valve stem hole is not at same axis with the centre of sphere of case head sphere, is provided with the water conservancy diversion wing between two auricles, and the both ends of water conservancy diversion wing are connected with two auricles respectively to the water conservancy diversion wing is located the side in valve stem hole, and water conservancy diversion wing cross-section width reduces towards the direction of keeping away from the valve stem hole gradually. After the regulating valve is opened, the valve rod is positioned behind the flow guide wings, the flow guide wings block the valve rod to prevent the fluid valve rod from being washed and impacted, the service life of the valve rod is prolonged, the flow guide wings divide fluid media into two parts of flowing valve bodies, the flowing stability of the media is improved, two ends of the flow guide wings are respectively connected with lug pieces on two sides of the valve core, and the valve core is guaranteed to be stressed and not to deform under the support of the flow guide wings in the machining process.

Description

Eccentric rotary regulating valve

Technical Field

The utility model relates to a governing valve technical field, concretely relates to eccentric rotatory governing valve.

Background

The eccentric rotary regulating valve is a straight-through valve body structure with novel structure and small fluid resistance, the rotation center of the valve core is not concentric with the valve rod, the abrasion of the valve body is reduced, and the service life is prolonged; ball valves are one of the fastest growing valve classes in recent years, and various eccentric ball valves are born due to the progress of related industrial technologies. The eccentric ball valve has the advantages that the valve rod arranged eccentrically is rotated to drive the valve core fixed on the valve rod to open and close the valve body, the eccentric ball valve has no friction in the opening and closing process, the opening and closing moment is small, the eccentric ball valve has strong shearing capacity for breaking scaling obstacles when being closed, the sealing performance is good due to the fact that an eccentric angle acts on the eccentric ball valve and is self-locked due to torque when being closed, and the eccentric ball valve is widely applied to water-solid two-phase fluids containing dregs, such as blast furnace slag flushing, ore washing and the like, and gas-solid two-phase flows of a pneumatic conveying system, such as electric metallurgy ash conveying, a coal injection system and the like, and replaces.

The existing eccentric rotary regulating valve sets the valve core into a hemispherical shape for improving the flow of the valve body, is connected with the hemispherical valve core through the eccentricity of the valve rod, and is easily impacted and washed by the high pressure of flowing media when the valve body is opened, so that the service life of the valve body is shortened, and the flowing stability of the media is poor. The valve rod directly sets up in the mounting hole of valve body, and the medium can stop in the connecting cavity of valve rod and valve body through the clearance, causes the valve rod locking, can not rotate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the valve rod exposes in the passageway that fluid flow flows through when opening eccentric rotary regulating valve among the prior art, and the valve rod receives the high-pressure impact of flowing medium easily and erodees, leads to the life of valve body to reduce, and the valve rod has blockked the flow of medium simultaneously, leads to the stability that the medium flows not good.

The utility model discloses a following technical scheme realizes:

the eccentric rotary regulating valve comprises a valve core, wherein the valve core is in a U shape which is turned by 90 degrees, the head of the valve core is arranged at the bottom of the U shape, one end of the head of the valve core is a spherical surface, the vertical sections of the U shape are valve core lug pieces respectively, valve rod holes are formed in the lug pieces, the valve rod holes and the spherical center of the spherical surface of the head of the valve core are not on the same axis, a flow guide wing is arranged between the two lug pieces, two ends of the flow guide wing are connected with the two lug pieces respectively, the flow guide wing is located on the side of the valve rod holes, the section width of the flow guide wing is gradually reduced towards the direction far away from the valve rod holes, and the.

In the prior art, when the eccentric rotary regulating valve is opened, the valve rod is exposed in a channel through which fluid flows, the valve rod is easily impacted and washed by high pressure of flowing media, so that the service life of the valve body is shortened, and meanwhile, the valve rod blocks the flowing of the media, so that the flowing stability of the media is poor; this application is provided with the water conservancy diversion wing between two auricles through the case, and the both ends of water conservancy diversion wing are connected with two auricles respectively to the water conservancy diversion wing is located the side in valve rod hole, and water conservancy diversion wing cross-section width reduces towards the direction of keeping away from the valve rod hole gradually. When the regulating valve is opened, the guide wings face the opening of the valve body, flow back is carried out on the fluid medium flowing in from the inlet of the valve body by the guide wings, and the fluid medium flows to the outlet of the valve body from the two guide surfaces of the guide wings. The valve rod is located the rear of water conservancy diversion wing when governing valve is open mode, and the water conservancy diversion wing forms to block the valve rod, and flowing medium just can not directly produce to erode and assault the valve rod, has improved the life of valve rod and the life of valve body. When the flowing medium passes through the guide wings, the guide wings divide the fluid medium flowing into the inlet of the valve body into two parts and flow to the outlet of the valve body, so that the fluid medium flows more stably. The valve rod hole and the spherical center of the spherical surface of the valve core head are not on the same axis, so that the rotation center of the valve core and the rotation center of the valve rod are not on the same axis, the abrasion of the valve body is reduced, and the service life of the regulating valve is prolonged. The two ends of the guide wing are respectively connected with the lug pieces on the two sides of the valve core, and the lug pieces of the valve core are supported by the guide wing in the machining process of the valve core, so that the lug pieces of the valve core cannot deform under stress.

The valve body is of a cavity structure, one end of the valve body is an inlet, the other end of the valve body is an outlet, an inner recess in the top of the valve body is communicated with the cavity structure of the valve body to form an installation cavity, the bottom of the valve body and the installation cavity are concentrically provided with installation holes, the inner side of the inlet is provided with a sealing surface, the valve rod is used for installing the valve core in the cavity of the valve body through the installation cavity and the installation holes, the valve rod hole is matched with the valve rod, the head of the valve core is provided with a spherical sealing surface, the spherical sealing surface of the valve core is matched with the sealing surface on the inner side of the inlet of. The valve core comprises a valve body, a valve core head, a valve body inlet and a valve body, wherein a spherical surface of the valve core head is provided with a sealing surface, the sealing surface is arranged on the inner side of the valve body, the valve body inlet is arranged on the valve core, the valve body inlet is arranged on the valve body. Wear-resisting ring sets up on the sealed sphere of the inboard sealed face cooperation of import of case and valve body, can improve the abrasive resistance of case when the case rotates, wear-resisting ring can inlay wear-resisting circle at the sphere of case or utilize the welding rod of wear-resisting material to utilize wear-resisting material's welding rod build-up welding behind the sealed face fluting of case through special technology of inlaying, the sphere of case is obtained in rethread processing, the case just becomes wear-resisting material with the sealed face complex region of valve body, seal the valve body, the cost is saved, simultaneously, the abrasive resistance is strong. Stellite is a hard alloy which can resist various types of abrasion and corrosion and high-temperature oxidation, takes cobalt as a main component, contains a considerable amount of nickel, chromium, tungsten and a small amount of alloy elements such as molybdenum, niobium, tantalum, titanium, nickel, lanthanum and the like, and occasionally also contains iron. According to different components in the alloy, the alloy can be made into welding wires, powder is used for processes such as hard surface overlaying, thermal spraying, spray welding and the like, and can also be made into casting and forging pieces and powder metallurgy pieces.

Further, still include first sealing washer, first sealing washer cover establish with the valve rod on, first sealing washer is located the top of valve body mounting hole, the bottom of first sealing washer and the top surface laminating of valve body mounting hole, the top surface of first sealing washer and the auricle laminating of case. Still include the second sealing washer, the installation cavity inner wall of valve body is provided with first ring channel, the second sealing washer cover is established on the valve rod, and the second sealing washer is arranged in first ring channel. First sealing washer and second sealing washer can prevent effectively that the medium from flowing into mounting hole and the installation cavity that valve rod and valve body are connected, and the medium is piled up in mounting hole and installation cavity for a long time, can lead to the valve rod locking can not rotate. The first sealing ring and the second sealing ring can effectively prevent a medium from entering the mounting hole and the mounting cavity.

Further, first sealing washer includes collar, sealing washer, the collar is the ring form, and the collar inner wall indent forms the second ring channel, the sealing washer is installed in the second ring channel, on the valve rod was located to first sealing washer cover, the bottom and the valve body laminating of collar, the laminating of the auricle of collar top and case, the inner wall and the valve rod laminating of sealing washer. Install the sealing washer in the collar, the collar produces the support to the case, and the sealing washer can not receive the extrusion of case, can rotate along the second annular groove, rotates when the valve rod can reach self-centering along with the valve rod rotates, can with the concentric and can the developments of valve rod with the case aims at, sealing performance is better, the sealing washer passes through in second annular groove installation and the collar, the overlap joint is convenient. Meanwhile, the mounting ring of the first sealing ring can realize the positioning of the height of the valve core in the installation process of the valve core, so that the valve core is more convenient to install.

Compared with the prior art, the utility model, following advantage and beneficial effect have: the utility model discloses a be provided with the guide wing between two auricles of case, after the valve is opened, the guide wing is towards the opening of valve body, and fluid medium flows into the valve body from the both sides of guide wing, and the valve rod is located the rear of guide wing, and flowing medium just can not produce to erode and assault the valve rod, has improved the life of valve rod and the life of valve body; when the flowing medium passes through the guide wings, the guide wings divide the fluid medium into two parts, namely the fluid valve body, so that the flowing of the medium fluid is more stable, and the flowing stability of the medium is improved; the valve rod hole and the spherical center of the spherical surface of the valve core head are not on the same axis, so that the rotation center of the valve core and the rotation center of the valve rod are not on the same axis, the abrasion of the valve body is reduced, and the service life of the regulating valve is prolonged; the two ends of the guide wing are respectively connected with the lug pieces on the two sides of the valve core, so that the lug pieces of the valve core are not deformed under stress under the support of the guide wing in the machining process of the valve core; the wear-resisting ring is arranged on the spherical surface of the valve core, and the wear-resisting ring and the sealing surface of the valve body are matched with the valve body for sealing, so that the wear-resisting capability of the valve core is improved; the first sealing ring and the second sealing ring can effectively prevent a medium from flowing into a mounting hole and a mounting cavity for connecting the valve rod and the valve body, and the valve rod can be prevented from being locked and incapable of rotating; the sealing ring of the first sealing ring is arranged in the mounting ring, the sealing ring cannot be extruded by the valve core, can rotate along the second annular groove to achieve automatic centering to realize the concentricity of the valve rod, can be dynamically aligned with the valve core, and has better sealing performance; the installation ring of the first sealing ring can realize the installation and positioning of the valve core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic partial sectional view of an overall structure of the embodiment of the present invention.

Fig. 2 is a schematic top view of a valve cartridge according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a valve core according to an embodiment of the present invention.

Fig. 4 is a schematic sectional view of the valve element according to the embodiment of the present invention.

Fig. 5 is a partially enlarged schematic view of embodiment B of the present invention.

Fig. 6 is a partially enlarged schematic view of embodiment a of the present invention.

Fig. 7 is a schematic structural diagram of a first seal ring according to an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

1-valve body, 2-valve core, 3-valve rod, 4-first sealing ring, 5-second sealing ring, 11-inlet, 12-outlet, 13-installation cavity, 14-installation hole, 15-sealing surface, 21-valve rod hole, 23-lug, 24-guide wing, 25-wear ring, 41-installation ring, 42-sealing ring, 131-first annular groove and 411-second annular groove.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

As shown in fig. 1, 2, 3 and 4, an eccentric rotary regulating valve includes a valve body 1 having a cavity structure, one end of the valve body having an inlet 11 and the other end having an outlet 12, a mounting cavity 13 formed by connecting an indent on the top of the valve body 1 with the cavity structure of the valve body, a mounting hole 14 concentrically arranged on the bottom of the valve body and the mounting cavity 13, a sealing surface 15 arranged on the inner side of the inlet 11 of the valve body 1, a valve rod 3 for mounting a valve core 2 in the cavity of the valve body 1 through the mounting cavity 13 and the mounting hole 14, a spherical sealing surface arranged on the head of the valve core 2, a sealing surface 15 arranged on the inner side of the inlet of the valve body and matched with the spherical sealing surface of the valve core 2, the valve core 2 being capable of rotating in the cavity of the valve body 1 along the valve rod 3, the valve core 2 having a U-shaped bottom, a head of the valve core having a spherical surface at one, the valve rod hole 21 and the spherical center of the spherical surface of the head 22 of the valve core 2 are not on the same axis, a guide wing 24 is arranged between the 9 lugs 23, two ends of the guide wing 24 are respectively connected with the 9 lugs 23, the guide wing 24 is positioned on the side of the valve rod hole 21, the section width of the guide wing 24 is gradually reduced towards the direction far away from the valve rod hole 21, and the valve core 2 is arranged on the valve rod 3 through the valve rod hole 21. The position where the spherical surface of the head of the valve core 2 contacts with the inner side sealing surface of the inlet 11 of the valve body 1 is provided with a wear-resistant ring 25, the wear-resistant ring 25 is arranged on the spherical surface of the valve core 2, the wear-resistant ring 25 can be matched with the inner side sealing surface 15 of the inlet 11 of the valve body 1, and the wear-resistant ring 25 is made of stellite alloy. A guide wing 24 is arranged between the two lugs 22 of the valve core 2, two ends of the guide wing 24 are respectively connected with the two lugs 22, the guide wing 22 is positioned at the side of the valve rod hole 21, and the section width of the guide wing 22 is gradually reduced towards the direction far away from the valve rod hole 21. When the regulating valve is opened, the guide wing 24 faces the opening 11 of the valve body 1, the fluid medium entering from the inlet 11 flows back and then flows out from the outlet 12 of the valve body, when the regulating valve is opened, the valve rod 3 is positioned behind the guide wing 22, the guide wing 24 protects the valve rod 3, and the flowing medium cannot directly generate scouring and impact on the valve rod 3. When the flowing medium passes through the guide wings 24 from the inlet 11, the guide wings 24 divide the flowing medium flowing from the inlet into two parts and flow to the outlet of the valve body 1, so that the medium fluid flows more stably. The valve rod hole 21 and the spherical center of the spherical surface of the head of the valve core 2 are not on the same axis, so that the rotation center of the valve core 2 and the rotation center of the valve rod 3 are not on the same axis, the abrasion of the valve body 1 is reduced, two ends of the guide wing 24 are respectively connected with the lug pieces 22 on two sides of the valve core 2, the valve core 2 can support the lug pieces on the guide wing 24 in the machining process, and the lug pieces 22 cannot deform under stress. The spherical surface at the head of the valve core 2 is provided with the wear-resisting ring 25, so that the wear-resisting capability of the valve core 2 can be improved, the wear-resisting ring 25 can be embedded in the spherical surface of the valve core 2 through a special embedding process, or welding rods made of wear-resisting materials are utilized, welding rods made of wear-resisting materials are utilized for surfacing after a groove is formed in the sealing surface of the valve 2, the spherical surface of the valve core 2 is obtained through processing, and the area, matched with the sealing surface 15 of the valve body 1, of the valve core 2 becomes the wear-resisting ring made. The material of the wear-resistant ring 25 can be stellite, which is hard alloy capable of resisting various types of wear and corrosion and high-temperature oxidation, mainly takes cobalt as a main component, and contains a considerable amount of nickel, chromium, tungsten and a small amount of molybdenum, niobium, tantalum, titanium, nickel, lanthanum and other alloy elements.

Specifically, as shown in fig. 5 and 7, the first sealing ring 4 is sleeved on the valve rod 3, the first sealing ring 4 is located at the top of the mounting hole 14 of the valve body 1, the bottom of the first sealing ring 4 is attached to the top surface of the mounting hole 14 of the valve body 1, and the top surface of the first sealing ring 4 is attached to the lug piece 23 of the valve element 2. First sealing washer 4 includes collar 41, sealing washer 42, collar 41 is the ring form, and collar 41 inner wall indent forms second annular groove 411, sealing washer 42 is installed in second annular groove 411, on valve rod 3 was located to first sealing washer 4 cover, the bottom and the valve body 1 laminating of collar 41, the laminating of auricle 23 of collar 41 top and case 2, the inner wall and the valve rod 3 laminating of sealing washer 42. The first sealing ring 4 is arranged at the top of the mounting hole 14 of the valve body 1, and can prevent a medium from flowing into the mounting hole 14 to generate resistance on the valve rod 3, so that the valve rod 3 is locked and cannot rotate. The sealing ring 42 of the first sealing ring 4 is installed in the installation ring 41 through the second annular groove 411, the installation ring 41 can not extrude the valve core 2 to the supporting sealing ring 42 of the valve core 2, the purpose of automatic centering with the valve rod 3 can be achieved by rotating along the second annular groove 411, the sealing ring 42 can be attached to the valve rod 3 more tightly, a gap can not be generated due to the rotation of the valve rod 3, the sealing performance is better, and meanwhile, the installation ring 41 of the first sealing ring 4 can realize the positioning during the installation of the valve core.

Specifically, as shown in fig. 6, a first annular groove 131 is formed in the inner wall of the mounting cavity 13 of the valve body 2, the second sealing ring 5 is sleeved on the valve rod 3, and the second sealing ring 5 is located in the first annular groove 131. Second sealing washer 5 is installed in the installation cavity of valve body 1 through first ring channel 131, can prevent that the installation cavity that the medium flowed into valve body 1 from rotating valve rod 3 and producing the resistance, prevents that valve rod 3 from producing the lock because piling up of medium.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. The eccentric rotary regulating valve is characterized by comprising a valve core (2), wherein the valve core (2) is in a U shape which is turned by 90 degrees, the head of the valve core (2) is arranged at the bottom of the U shape, one end of the head of the valve core (2) is a spherical surface, lug pieces (23) of the valve core (2) are respectively arranged at the vertical sections of the U shape, a valve rod hole (21) is formed in each lug piece (23), the valve rod hole (21) and the spherical center of the spherical surface of the head of the valve core (2) are not on the same axis, a flow guide wing (24) is arranged between the lug pieces (23), two ends of each flow guide wing (24) are respectively connected with the lug pieces (23), the flow guide wings (24) are located on the sides of the valve rod hole (21), and the section width of each flow guide wing (24) is gradually reduced towards.

2. An eccentric rotary regulating valve according to claim 1, characterized in that it further comprises a valve body (1), a valve stem (3), the valve body (1) is of a cavity structure, one end of the valve body is an inlet (11), the other end of the valve body is an outlet (12), the top of the valve body (1) is concave inwards and is communicated with the cavity structure of the valve body to form an installation cavity (13), the bottom of the valve body and the mounting cavity (13) are concentrically provided with a mounting hole (14), the inner side of the inlet (11) is provided with a sealing surface (15), the valve rod (3) installs the valve core (2) in the cavity of the valve body (1) through the installation cavity (13) and the installation hole (14), the valve rod hole (21) is matched with the valve rod (3), the valve core (2) is characterized in that a spherical sealing surface is arranged at the head of the valve core (2), the spherical sealing surface of the valve core (2) is matched with a sealing surface (15) on the inner side of an inlet of the valve body, and the valve core (2) can rotate in a cavity of the valve body (1) along the valve rod (3).

3. An eccentric rotary regulating valve according to claim 2, characterized in that the position where the spherical surface of the head of the valve core (2) contacts the sealing surface (15) is provided with a wear-resistant ring (25), the wear-resistant ring (25) is arranged on the spherical surface of the valve core (2), the wear-resistant ring (25) can be matched with the sealing surface (15) on the inner side of the inlet (11), and the wear-resistant ring (25) is made of wear-resistant material.

4. An eccentric rotary regulating valve according to claim 3, characterized in that the wear ring (25) is stellite.

5. The eccentric rotary regulating valve according to claim 1, further comprising a first sealing ring (4), wherein the first sealing ring (4) is sleeved on the valve rod (3), the first sealing ring (4) is located at the top of the mounting hole (14), the bottom of the first sealing ring (4) is attached to the top surface of the mounting hole (14), and the top surface of the first sealing ring (4) is attached to the lug piece (23) of the valve core (2).

6. The eccentric rotary regulating valve according to any one of claims 2-4, characterized by further comprising a second sealing ring (5), wherein a first annular groove (131) is formed in the inner wall of the mounting cavity (13), the second sealing ring (5) is sleeved on the valve rod (3), and the second sealing ring (5) is located in the first annular groove (131).

7. The eccentric rotary regulating valve according to claim 5, wherein the first sealing ring (4) comprises a mounting ring (41) and a sealing ring (42), the mounting ring (41) is annular, a second annular groove (411) is formed in the inner wall of the mounting ring (41) in a concave mode, the sealing ring (42) is installed in the second annular groove (411), the valve rod (3) is sleeved with the first sealing ring (4), the bottom of the mounting ring (41) is attached to the valve body (1), the top of the mounting ring (41) is attached to the lug piece (23) of the valve core (2), and the inner wall of the sealing ring (42) is attached to the valve rod (3).

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