CN216430552U

CN216430552U - Top-mounted fixed ball valve

Info

Publication number: CN216430552U
Application number: CN202122833396.6U
Authority: CN
Inventors: 邹浩达; 潘银龙; 李宪厂
Original assignee: Wenzhou Youpai Fluid Control Equipment Co ltd
Current assignee: Wenzhou Youpai Fluid Control Equipment Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-03
Anticipated expiration: 2031-11-18

Abstract

The utility model relates to a top-mounted fixed ball valve, which comprises a valve body, the valve gap, the spheroid, the valve rod, the stuffing box, flange and combination disk seat, in combination disk seat, disk seat becket tip forms the boss, the spring holder is installed at the boss root, be equipped with the cylinder hole on the spring holder, cylinder spring installs in the cylinder hole, cylinder spring's one end roof pressure is on the valve body, adjusting nut and boss outside screw-thread fit, be equipped with on adjusting nut's the lateral surface and rotate the pinhole, circle and disk seat becket excircle set up respectively and prevent changeing the cotter way in the spring holder, prevent setting up the commentaries on classics of changeing in the cotter way and prevent changeing, be equipped with on the periphery wall of spring holder and prevent changeing the lockhole, the disk seat sealing washer is fixed on the disk seat becket with the sealed cooperation of spheroid. The utility model discloses an above-mentioned design, spanner instrument rotate that adjusting nut reversely drives the installation and the dismantlement of disk seat becket advancing and retreating completion spheroid and combination disk seat promptly in the valve body, and the assembly is convenient and fast very, has reduced the maintenance cost, has simple structure compactness, advantage that the reliability is strong.

Description

Top-mounted fixed ball valve

Technical Field

The utility model relates to a top-mounted fixed ball valve.

Background

The ball valve has the characteristics of reliable sealing, simple structure and convenient maintenance, and becomes one of valves with wider application. The top-mounted ball valve has the advantages of few outer leak points, small influence of pipeline stress on the top-mounted ball valve and the like, and the top-mounted ball valve is particularly suitable for the requirements of large caliber, high temperature and high pressure and hard sealing, so that online maintenance is realized, and the top-mounted ball valve is required to be adopted for pipelines requiring the ball valve to resist end load. However, when the existing top-mounted ball valve meets the above conditions, the structure is complex, the disassembly and the assembly are complex, and time and labor are wasted.

Disclosure of Invention

In order to overcome among the prior art ordinary top-mounted fixed ball valve structure more complicated, also more loaded down with trivial details when the dismouting, the problem that wastes time and energy, the utility model provides a top-mounted fixed ball valve, this top-mounted fixed ball valve's simple structure is compact, the assembly is swift, the disk seat is changed conveniently, the good reliability.

The utility model provides a technical scheme that its technical problem adopted is: comprises a valve body, a valve cover, a ball body, a valve rod, a stuffing box, a flange and a pair of combined valve seats which are respectively arranged at the two sides of the ball body in the valve body, the valve gap is installed in the upper end of valve body, the valve rod passes the valve gap and is connected with the spheroid, the combination disk seat includes the disk seat becket, the valve seat sealing washer, adjusting nut, the spring holder, cylinder spring and rotational lock, disk seat becket tip forms the boss, the spring holder is installed at the boss root, be equipped with the cylinder hole on the spring holder, cylinder spring installs in the cylinder hole, the one end roof pressure of cylinder spring is on the valve body, adjusting nut and boss outside screw-thread fit, be equipped with on adjusting nut's the lateral surface and rotate the pinhole, circle and disk seat becket excircle set up respectively and prevent the rotational lock groove, prevent setting up the rotational lock in the rotational lock groove, be equipped with on the periphery wall of spring holder and prevent rotating the lockhole, the valve seat sealing washer is fixed on the disk seat becket and is cooperated with the spheroid sealing.

The inner opening of the valve body is processed into a step shape to form a valve body boss, a first step surface, a second step surface and a third step surface, and the valve body boss is matched with the periphery of each step surface combined valve seat.

And the adjusting nut and the spring seat are respectively provided with a connecting hole, and are connected through a locking screw in the connecting hole.

The flange is arranged above the valve cover, the valve rod penetrates through the flange and the packing box for sealing the valve rod and is arranged between the valve cover and the flange, the packing box and the valve cover are connected through connecting screws.

The utility model discloses an above-mentioned design rotates the installation and the dismantlement that spheroid and combination disk seat were accomplished promptly to the reverse disk seat becket metal ring that drives of adjusting nut through spanner instrument advance and retreat in the valve body, and convenient online maintenance has reduced the maintenance cost, has simple structure compactness, assembly swiftly, advantage that the reliability is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top partial cross-sectional view of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 1.

Fig. 4 is an enlarged view of a portion B of fig. 1.

Fig. 5 is a schematic structural view of the combined valve seat of the present invention.

In the figure: the valve comprises a valve body 1, a valve cover 2, a ball body 3, a valve rod 4, a stuffing box 5, a flange 6, a valve seat metal ring 7, a valve seat sealing ring 8, an adjusting nut 9, a spring seat 10, a cylindrical spring 11, an anti-rotation pin 12, a boss 13, a cylindrical hole 14, a rotation pin hole 15, an anti-rotation pin groove 16, a stud 17, an anti-rotation lock hole 18, a valve body boss 19, a first step surface 20, a second step surface 21, a third step surface 22, a connecting hole 23, a locking screw 24, a connecting screw 25 and a fixing shaft 26.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected through any combination of two or more members or structures. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in the figure, the utility model comprises a valve body 1, a valve cover 2, a ball body 3, a valve rod 4, a stuffing box 5, a flange 6 and a pair of combined valve seats which are respectively arranged at the two sides of the ball body 3 in the valve body 1, the valve gap 2 is installed in the upper end of the valve body 1 through the stud 17, the valve rod 4 penetrates the valve gap 2 to be connected with the ball body 3, the combined valve seat comprises a valve seat metal ring 7, a valve seat sealing ring 8, an adjusting nut 9, a spring seat 10, a cylindrical spring 11 and an anti-rotating pin 12, a boss 13 is formed at the end part of the valve seat metal ring 7, the spring seat 10 is installed at the root part of the boss 13, a cylindrical hole 14 is formed in the spring seat 10, the cylindrical spring 11 is installed in the cylindrical hole 14, one end of the cylindrical spring 11 is pressed on the valve body 1, the adjusting nut 9 is in threaded fit with the outer side of the boss 13, a rotating pin hole 15 is formed in the outer side face of the adjusting nut 9, and the rotating pin hole 15 is matched with an external wrench tool. The inner circle of the spring seat 10 and the outer circle of the valve seat metal ring 7 are respectively provided with an anti-rotation pin groove 16, an anti-rotation pin 12 is arranged in the anti-rotation pin groove 16, an anti-rotation lock hole 18 is formed in the outer peripheral wall of the spring seat 10, the anti-rotation lock hole 18 is matched with the insertion of an external positioning pin, and the insertion of the external positioning pin enables the whole combined valve seat not to rotate due to the rotation of the adjusting nut 9. The valve seat sealing ring 8 is fixed on the valve seat metal ring 7 and is in sealing fit with the ball body 3. The inner opening of the valve body is processed into a step shape to form a valve body boss 19, a first step surface 20, a second step surface 21 and a third step surface 22, and the valve body boss 19 is matched with the periphery of each step surface combined valve seat. The adjusting nut 9 and the spring seat 10 are both provided with a connecting hole 23, and the adjusting nut 9 and the spring seat 10 are connected through a locking screw 24 in the connecting hole 23. The mounting of the locking screw 24 prevents the screw thread of the adjusting nut 9 from loosening. The flange 6 is arranged above the valve cover 2, the valve rod 4 penetrates through the flange 6 and the packing box 5 for sealing the valve rod 4 and is arranged between the valve cover 2 and the flange 6, the packing box 5 and the valve cover 2 are connected through a connecting screw 25. When the valve seat is installed, the fixed shaft 26 and the ball body 3 are sequentially installed from the upper opening of the valve body 1, the bottom of the valve rod 4 is matched with the fixed shaft 26, the anti-rotation lock hole 18 is matched with the insertion of the external locating pin, the external locating pin is inserted to abut against the valve body 1, so that the whole combined valve seat cannot rotate due to the rotation of the adjusting nut 9, after the combined valve seat is locked by the matching of the locating pin and the anti-rotation lock hole 18, the rotating pin holes 15 in the left and right adjusting nuts are respectively rotated by using a wrench tool, the valve seat metal rings 7 on two sides abut against the valve seat seal rings 8 to respectively move towards the direction of the tightly-holding ball body 3, and the valve seat seal rings 8 and the ball body 3 are tightly held to form sealing; the mounting of the locking screw 24 prevents the screw thread of the adjusting nut 9 from loosening.

The above-mentioned embodiment is only right the utility model relates to a preferred embodiment of top mounted type fixed ball valve describes, and is not injectd utility model's conception and scope, does not deviate from the utility model discloses under the prerequisite of scheme, the technical of the field personnel is right the utility model discloses a various appearance variants and the improvement that technical scheme made all should fall into the utility model relates to a protection scope of top mounted type fixed ball valve.

Claims

1. A top-mounted fixed ball valve comprises a valve body, a valve cover, a ball body, a valve rod, a stuffing box, a flange and a pair of combined valve seats which are arranged on two sides of the ball body in the valve body respectively, wherein the valve cover is arranged at the upper end of the valve body, the valve rod penetrates through the valve cover to be connected with the ball body, the top-mounted fixed ball valve is characterized in that the combined valve seats comprise a valve seat metal ring (7), a valve seat sealing ring (8), an adjusting nut (9), a spring seat (10), a cylindrical spring (11) and an anti-rotating pin (12), a boss (13) is formed at the end part of the valve seat metal ring (7), the spring seat (10) is arranged at the root part of the boss (13), a cylindrical hole (14) is formed in the spring seat (10), the cylindrical spring (11) is arranged in the cylindrical hole (14), one end of the cylindrical spring (11) is pressed on the valve body (1), the adjusting nut (9) is in threaded fit with the outer side of the boss (13), a rotating pin hole (15) is formed in the outer side surface of the adjusting nut (9), an inner circle of the spring seat (10) and an outer circle of the valve seat metal ring (7) are respectively provided with an anti-rotation pin groove (16), an anti-rotation pin (12) is arranged in the anti-rotation pin groove (16), an anti-rotation lock hole (18) is formed in the outer peripheral wall of the spring seat (10), and the valve seat sealing ring (8) is fixed on the valve seat metal ring (7) and is in sealing fit with the ball body (3).

2. A top-loading type fixed ball valve as claimed in claim 1, wherein the opening of the valve body is formed in a stepped shape to form a valve body boss (19), a first step surface (20), a second step surface (21) and a third step surface (22), and the valve body boss (19) and the outer periphery of the valve seat of each step surface are matched.

3. A top-loading fixed ball valve as claimed in claim 1 or 2, wherein the adjusting nut (9) and the spring seat (10) are provided with a connecting hole (23), and the adjusting nut (9) and the spring seat (10) are connected by a locking screw (24) in the connecting hole (23).

4. A top-loading fixed ball valve as claimed in claim 3, wherein the adapter (6) is arranged above the valve cover (2), the valve rod (4) is arranged between the valve cover (2) and the adapter (6) by passing through the adapter (6) and the stuffing box (5) sealing the valve rod (4), and the adapter (6), the stuffing box (5) and the valve cover (2) are connected by the connecting screw (25).