CN210978589U

CN210978589U - Eccentric hemisphere valve for pipeline leakage detection

Info

Publication number: CN210978589U
Application number: CN201921534258.4U
Authority: CN
Inventors: 吴进武; 幸华松
Original assignee: Shanghai East Well Valve Co ltd
Current assignee: Shanghai East Well Valve Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-07-10
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a pipeline leakage detection eccentric half ball valve in the technical field of pipeline leakage detection eccentric half ball valves, the bottom cover is rotatably connected with the ball support, the lower end of the upper valve rod passes through the top of the valve body and is fixedly connected with the ball support, the combined type shaft sleeve II is rotatably connected with the upper valve rod, the upper end of the upper valve rod extends into the fan-shaped gear hole of the worm gear case and is connected with the fan-shaped gear key, the spherical crown is fixedly connected with the ball support, the valve seat is arranged on the step on the right side of the valve body, the pressing plate is arranged on the valve seat, the pressing plate is in threaded connection with the valve body, the top of the valve cover is fixedly connected with the bracket through the double-end double-screw bolt II and the nut II, the top of the bracket is fixedly connected with the worm gear case through the double-end double-screw bolt IV and the nut IV, the worm gear case is, the valve seat sealing device is simpler to maintain and replace, and is easier to disassemble, assemble and adjust the pretightening force of the valve seat seal.

Description

Eccentric hemisphere valve for pipeline leakage detection

Technical Field

The utility model relates to a pipeline eccentric half ball valve technical field that leaks hunting specifically is a pipeline eccentric half ball valve that leaks hunting.

Background

The eccentric half ball valve is a ball valve which takes a one-third ball body as a sealing valve core, is suitable for medium pipelines containing silt, impurities, particles, crystals, precipitates and the like, has the advantages of small fluid resistance when used for intercepting and throttling, basically no flow resistance of the ball valve with the full diameter, convenient operation, rapid opening and closing, convenient remote control and the like, a pressing plate and a valve body of the eccentric half ball valve are formed by connecting conventional screws, the screws can be gradually bent and deformed by internal stress after a period of time, or the valve seat of the eccentric half ball valve is inspected on line due to multiple factors such as rusting of the screw holes or entering of impurities, and is troublesome to replace and maintain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline eccentric half ball valve that leaks hunting, its simple structure, design reason and use convenient operation can effectively solve current eccentric half ball valve and use after a period, and the internal stress can let the screw warp by gradual bending, perhaps because the screw hole rusts or gets into multiple factors such as impurity and cause eccentric half ball valve's disk seat on-line inspection, changes, maintains comparatively troublesome problem.

In order to achieve the above object, the utility model provides a following technical scheme: a pipeline leakage detection eccentric half-ball valve comprises a valve body, a ball support, a ball crown, a valve seat, an upper valve rod, a pressing plate, a bottom cover and a worm gear box, wherein the ball support and the ball crown are arranged in the valve body, the upper end of the bottom cover penetrates through the bottom of the valve body and is supported at the center of the bottom of the ball support, the bottom cover is rotatably connected with the ball support, a first composite shaft sleeve is arranged between the bottom cover and the ball support, the lower end of the upper valve rod penetrates through the top of the valve body and is fixedly connected with the ball support, a second composite shaft sleeve is arranged between the upper valve rod and the valve body and is rotatably connected with the upper valve rod, the upper end of the upper valve rod extends into a fan-shaped gear hole of the worm gear box and is in key connection with the fan-shaped gear, the ball crown is fixedly connected with the ball support, the valve seat is installed on a step, the top of the valve cover is fixedly connected with a support through a stud II and a nut II, the top of the support is fixedly connected with a worm gear case through a stud IV and a nut IV, and the worm gear case is fixedly connected with an upper valve rod through a flat key II.

Preferably, a plurality of layers of fillers are arranged between the upper valve rod and the inner hole of the valve body and stacked, a filler pressing plate is arranged at the top of each filler and fixedly connected with the valve body through a third stud and a third nut, and the plurality of layers of fillers are tightly pressed by the filler pressing plate.

Preferably, the valve body top is equipped with the valve gap, just between valve body and the valve gap and all seted up the tang between valve body and the bottom, and two tang departments are equipped with gasket two and gasket one respectively, just through stud one and nut fixed connection between valve body and the valve gap, through hexagon socket head cap screw fixed connection between valve body and the bottom.

Preferably, the upper valve rod and the ball support are fixedly connected through two flat keys.

Preferably, a first composite shaft sleeve is assembled between the bottom cover and the ball support, and the first composite shaft sleeve is a shaft sleeve sprayed in the opening.

Preferably, an O-shaped sealing ring I is arranged between the valve body and the bottom cover, the spherical crown and the spherical support are fixedly connected through a second socket head cap screw, a second O-shaped sealing ring is assembled between the spherical crown and the spherical support, and a third O-shaped sealing ring is assembled between the pressing plate and the valve body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model has simple structure, novel and reasonable design and convenient use and operation, and because a gasket I and an O-shaped sealing ring I are adopted between the bottom cover and the valve body to realize multi-sealing, the sealing is more reliable and the leakage is not easy to occur;

2. the upper valve rod and the ball support are connected by two flat keys I, so that the connection is reliable, the torque is lighter, and the worm gear box can drive the upper valve rod and the ball support to rotate more quickly to achieve the purpose of quickly opening and closing the valve;

3. the pressing plate and the valve body are fixedly connected through the hexagon socket head cap screws, so that the connection between the pressing plate and the valve body is more reliable, the valve sealing specific pressure can be adjusted more quickly by quickly adjusting the position of the pressing plate, and the valve parts can be replaced, maintained and cleaned quickly on line.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1 bottom cover, 2 hexagon socket head cap screws I, 3 gaskets I, 4O-shaped sealing rings I, 5 valve bodies, 6 composite shaft sleeve I, 7 ball supports, 8 ball crowns, 9O-shaped sealing rings II, 10 hexagon socket head cap screws II, 11 pressing plates, 12 valve seats, 13O-shaped sealing rings III, 14 flat keys I, 15 upper valve rods, 16 composite shaft sleeve II, 17 packing, 18 gaskets II, 19 valve covers, 20 stud I, 21 nut I, 22 packing pressing plates, 23 supports, 24 stud II, 25 nut II, 26 stud III, 27 nut III, 28 stud IV, 29 nut IV, 30 flat keys II and 31 worm gear cases.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a pipeline leakage detection eccentric half ball valve comprises a valve body 5, a ball support 7, a spherical crown 8, a valve seat 12, an upper valve rod 15, a pressing plate 11, a bottom cover 1 and a worm gear case 31, wherein the ball support 7 and the spherical crown 8 are arranged in the valve body 5, the upper end of the bottom cover 1 penetrates through the bottom of the valve body 5 and is supported at the center of the bottom of the ball support 7, the bottom cover 1 is rotatably connected with the ball support 7, a composite shaft sleeve I6 is arranged between the bottom cover 1 and the ball support 7, the lower end of the upper valve rod 15 penetrates through the top of the valve body 5 and is fixedly connected with the ball support 7, a composite shaft sleeve II 16 is arranged between the upper valve rod 15 and the valve body 5, the composite shaft sleeve II 16 is rotatably connected with the upper valve rod 15, the upper end of the upper valve rod 15 extends into a fan-shaped gear hole of the worm gear case 31 and is connected with the fan-shaped gear key, the spherical crown 8 is fixedly, the pressure plate 11 is in threaded connection with the valve body 5, the top of the valve cover 19 is fixedly connected with a support 23 through a stud II 24 and a nut II 25, the top of the support 23 is fixedly connected with a worm gear case 31 through a stud IV 28 and a nut IV 29, and the worm gear case 31 is fixedly connected with the upper valve rod 15 through a flat key II 30.

Referring to fig. 1, a plurality of layers of packing 17 are arranged between an upper valve stem 15 and an inner hole of a valve body 5, the plurality of layers of packing 17 are stacked, a packing pressing plate 22 is arranged on the top of the packing 17, the packing pressing plate 22 is fixedly connected with the valve body 5 through a stud III 26 and a nut III 27, and the plurality of layers of packing 17 are pressed tightly by the packing pressing plate 22;

referring to fig. 1, a valve cover 19 is assembled on the top of a valve body 5, seam allowances are respectively formed between the valve body 5 and the valve cover 19 and between the valve body 5 and a bottom cover 1,

seam allowances

18 and 3 are respectively assembled at the seam allowances at two positions, the valve body 5 and the valve cover 19 are fixedly connected through a stud bolt 20 and a nut 21, and the valve body 5 and the bottom cover 1 are fixedly connected through a hexagon socket head cap screw 2, so that the connection stability and the disassembly convenience between the structures are improved;

referring to fig. 1, the upper valve rod 15 and the ball support 7 are fixedly connected through two flat keys one 14, so that torque transmission between the upper valve rod 15 and the ball support 7 can be completed, the connection is reliable, the torque is lighter, and the worm gear case 31 can drive the upper valve rod 15 and the ball support 7 to rotate more quickly to achieve the purpose of quickly opening and closing the valve;

a first composite shaft sleeve 6 is assembled between the bottom cover 1 and the ball support 7, and the first composite shaft sleeve 6 is a shaft sleeve sprayed in an opening;

be provided with O type sealing washer 4 between valve body 5 and the bottom 1, ball crown 8 and spheroid support 7 are through two 10 fixed connection of hexagon socket head cap screw, and are equipped with two 9O type sealing washers between ball crown 8 and the spheroid support 7, are equipped with three 13O type sealing washers between clamp plate 11 and the valve body 5, make sealed more reliable, be difficult to leak.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipeline eccentric half ball valve that leaks hunting which characterized in that: comprises a valve body (5), a ball support (7), a ball crown (8), a valve seat (12), an upper valve rod (15), a pressure plate (11), a valve cover (19), a bottom cover (1) and a worm gear case (31), wherein the ball support (7) and the ball crown (8) are arranged in the valve body (5), the upper end of the bottom cover (1) penetrates through the bottom of the valve body (5) and is supported at the center of the bottom of the ball support (7), the bottom cover (1) is rotatably connected with the ball support (7), a first composite shaft sleeve (6) is arranged between the bottom cover (1) and the ball support (7), the lower end of the upper valve rod (15) penetrates through the top of the valve body (5) and is fixedly connected with the ball support (7), a second composite shaft sleeve (16) is arranged between the upper valve rod (15) and the valve body (5), and the second composite shaft sleeve (16) is rotatably connected with the upper valve rod, the upper end of the upper valve rod (15) extends into a sector gear hole of a worm gear box (31) and is connected with a sector gear key, a spherical crown (8) is fixedly connected with a spherical support (7), a valve seat (12) is installed on a step on the right side of the valve body (5), a pressing plate (11) is installed on the valve seat (12), the pressing plate (11) is connected with the valve body (5) through threads, the top of the valve cover (19) is fixedly connected with a support (23) through a double-end stud II (24) and a nut II (25), the top of the support (23) is fixedly connected with the worm gear box (31) through a double-end stud IV (28) and a nut IV (29), and the worm gear box (31) is fixedly connected with the upper valve rod (15) through a flat key II (30).

2. The eccentric hemisphere valve of claim 1, wherein: the packing structure is characterized in that multiple layers of packing (17) are arranged between the upper valve rod (15) and an inner hole of the valve body (5), the multiple layers of packing (17) are stacked and distributed, a packing pressing plate (22) is arranged at the top of the packing (17), the packing pressing plate (22) is fixedly connected with the valve body (5) through a stud III (26) and a nut III (27), and the multiple layers of packing (17) are pressed tightly through the packing pressing plate (22).

3. The eccentric hemisphere valve of claim 1, wherein: valve body (5) top is equipped with valve gap (19), just between valve body (5) and valve gap (19) and between valve body (5) and bottom (1) all seted up the tang, and two tang departments are equipped with gasket two (18) and gasket one (3) respectively, just through stud one (20) and nut one (21) fixed connection between valve body (5) and valve gap (19), through hexagon socket head cap screw one (2) fixed connection between valve body (5) and bottom (1).

4. The eccentric hemisphere valve of claim 1, wherein: the upper valve rod (15) and the ball support (7) are fixedly connected through two flat keys I (14).

5. The eccentric hemisphere valve of claim 1, wherein: a first composite shaft sleeve (6) is assembled between the bottom cover (1) and the ball support (7), and the first composite shaft sleeve (6) is a shaft sleeve sprayed in the opening.

6. The eccentric hemisphere valve of claim 1, wherein: be provided with O type sealing washer (4) between valve body (5) and bottom (1), ball crown (8) and spheroid support (7) are through allen key screw two (10) fixed connection, just be equipped with O type sealing washer two (9) between ball crown (8) and spheroid support (7), be equipped with O type sealing washer three (13) between clamp plate (11) and valve body (5).