CN211175472U

CN211175472U - Large metal sealing ball valve

Info

Publication number: CN211175472U
Application number: CN201922153955.1U
Authority: CN
Inventors: 方高远; 王英才; 郑磊
Original assignee: Fangzheng Valve Group Shanghai Co ltd
Current assignee: Fangzheng Valve Group Shanghai Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-04
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a big metal sealing ball valve, press cover, support, key, packing pad, first full thread double-screw bolt, first nut, second full thread double-screw bolt, second nut, third full thread double-screw bolt, third nut, elasticity cylindric lock, disc spring, leaf spring, first fire washer, for axle spring ring and third fire washer including valve body, first dish spring, valve rod, thrust gasket, direction bearing, packing, the bottom both ends of valve body are connected with back valve gap and preceding valve gap respectively. This disk seat of big metal seal ball valve disk seat leans on first dish spring, the pretension is realized to the second dish spring, accomplish the low pressure seal of valve, be metal seal between spheroid and disk seat, back disk seat is through leaf spring and hexagon socket head cap screw installation on the valve body in addition, be metal seal between spheroid and preceding disk seat, metal seal between valve body and back disk seat, because the spherical face of disk seat has automatic centering effect with the ball, not only can be better like this realize sealed, and the sealed not hard up condition of use after a period can not appear.

Description

Large metal sealing ball valve

Technical Field

The utility model relates to the technical field of valves, specifically be a big metal seal ball valve.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like.

The sealing ball valve is also a common valve body on the market, but the sealing effect of the sealing ball valve on the market is poor when the sealing ball valve is used, and the sealing ball valve becomes loose after being used for a period of time, so that the technology capable of improving the structure of the ball valve is urgently needed on the market to perfect the equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a big metal seal ball valve to solve the problem of this type of seal ball valve on the present market that above-mentioned background art provided when using.

In order to achieve the above object, the utility model provides a following technical scheme: a large metal sealing ball valve comprises a valve body, a first disc spring, a valve rod, a thrust gasket, a guide bearing, a packing pressing sleeve, a support, a key, a packing pad, a first full-thread stud, a first nut, a second full-thread stud, a second nut, a third full-thread stud, a third nut, an elastic cylindrical pin, a disc spring, a plate spring, a first fire-resistant washer, a shaft spring ring and a third fire-resistant washer, wherein a rear valve cover and a front valve cover are respectively connected to two ends of the bottom of the valve body, a ball body is arranged at the bottom end inside the valve body, a front valve seat is connected to the upper end of the front valve cover, a rear valve seat is connected to the upper end of the rear valve cover, the first disc spring is arranged between the front valve seat and the front valve cover, a second disc spring is arranged below the first disc spring, the valve rod is arranged above the ball body, the thrust gasket is arranged on the valve rod, the guide bearing is, the packing pressing sleeve is arranged at two sides of the bottom end of the valve rod, the packing pressing plate is arranged above the packing pressing sleeve, the support is fixedly connected above the valve body, the support is connected with a connecting disc, the key is fixed on the upper part of the valve rod through an elastic cylindrical pin, the packing pad is arranged below the packing pressing sleeve, the bracket is connected with the valve body through a first full thread stud and a first nut, the plate spring is arranged between the rear valve cover and the ball body, the plate spring is fixed on the rear valve cover through an inner hexagonal cylindrical head screw, the belleville spring is arranged on the first full-thread stud door lock, the first fire-resistant washer is arranged above the packing pad, the top of first fire resistant packing ring is provided with second fire resistant packing ring, the spring ring setting is used between valve rod and connection pad to the axle, third fire resistant packing ring sets up between the bottom of valve body and back valve gap.

Preferably, the valve body is connected with the rear valve cover through a third full-thread stud and a third nut, the number of the third full-thread studs and the number of the third nuts are two, and the valve body is connected with the front valve cover through a third full-thread stud and a third nut.

Preferably, the rear valve seat is connected to the valve body through an inner hexagonal socket head cap screw and a plate spring.

Preferably, metal seal is arranged between the rear valve seat and the ball body, between the front valve seat and the ball body, and metal seal is also arranged between the valve body and the rear valve seat and between the valve body and the front valve seat.

Compared with the prior art, the beneficial effects of the utility model are that: this big metal seal ball valve:

the preceding disk seat in this device leans on first dish spring, the pretension is realized to the second dish spring, accomplish the low pressure seal of valve, be metal seal between spheroid and disk seat, back disk seat is through leaf spring and hexagon socket head cap screw installation on the valve body in addition, be metal seal between spheroid and preceding disk seat, metal seal between valve body and back disk seat, because the spherical face of disk seat has automatic centering effect with the ball, not only can be better like this realize sealed, can not appear using the condition that the sealing is not hard up after a period moreover.

Drawings

FIG. 1 is a schematic view of the shutter structure of the present invention;

FIG. 2 is an enlarged schematic view of part A of the present invention;

fig. 3 is an enlarged schematic view of the part B of the present invention.

In the figure: 1. a valve body; 2. a rear valve cover; 3. a sphere; 4. a front valve seat; 5. a rear valve seat; 6. a first disc spring; 7. a valve stem; 8. a thrust washer; 9. a guide bearing; 10. pressing and sleeving the filler; 11. a packing press plate; 12. a support; 13. a connecting disc; 14. a key; 15. a front valve cover; 16. a filler pad; 17. a second disc spring; 18. a first full-thread stud; 19. a first nut; 20. a second full-thread stud; 21. a second nut; 22. a third full-thread stud; 23. a third nut; 24. a socket head cap screw; 25. an elastic cylindrical pin; 26. a belleville spring; 27. a plate spring; 28. a first refractory gasket; 29. a second refractory gasket; 30. a spring ring for the shaft; 31. a third refractory gasket.

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. 1-3, the present invention provides a technical solution: a large metal sealing ball valve comprises a valve body 1, a rear valve cover 2, a ball body 3, a front valve seat 4, a rear valve seat 5, a first disc spring 6, a valve rod 7, a thrust washer 8, a guide bearing 9, a packing pressing sleeve 10, a packing pressing plate 11, a support 12, a connecting disc 13, a key 14, a front valve cover 15, a packing pad 16, a second disc spring 17, a first full-thread stud 18, a first nut 19, a second full-thread stud 20, a second nut 21, a third full-thread stud 22, a third nut 23, an inner hexagonal socket head screw 24, an elastic cylindrical pin 25, a disc spring 26, a plate spring 27, a first fire-resistant washer 28, a second fire-resistant washer 29, a shaft spring ring 30 and a third fire-resistant washer 31, wherein the rear valve cover 2 and the front valve cover 15 are respectively connected at two ends of the bottom of the valve body 1, the rear valve cover 2 and the valve body 1 are connected through the third full-thread stud 22 and the third nut 23, two third full-thread studs 22 and two third nuts 23 are arranged, the valve body 1 and the front valve cover 15 are also connected through the third full-thread studs 22 and the third nuts 23, the ball body 3 is arranged at the bottom end inside the valve body 1, the upper end of the front valve cover 15 is connected with the front valve seat 4, the upper end of the rear valve cover 2 is connected with the rear valve seat 5, the rear valve seat 5 is connected with the plate spring 27 through the hexagon socket head cap screw 24 and the plate spring 27 on the valve body 1, metal sealing is arranged between the rear valve seat 5 and the front valve seat 4 and between the valve body 1 and the rear valve seat 5 and the front valve seat 4, the first disc spring 6 is arranged between the front valve seat 4 and the front valve cover 15, the second disc spring 17 is arranged below the first disc spring 6, the valve rod 7 is arranged above the ball body 3, the thrust washer 8 is arranged on the valve rod 7, the guide bearings 9 are arranged at two sides of the middle part of the valve rod 7, the packing pressing sleeve 10 is arranged on two sides of the bottom end of the valve rod 7, the packing pressing plate 11 is arranged above the packing pressing sleeve 10, the support 12 is fixedly connected above the valve body 1, the connecting disc 13 is connected on the support 12, the key 14 is fixed on the upper portion of the valve rod 7 through the elastic cylindrical pin 25, the packing pad 16 is arranged below the packing pressing sleeve 10, the support 12 is connected with the valve body 1 through the first full-thread stud 18 and the first nut 19, the plate spring 27 is arranged between the rear valve cover 2 and the ball body 3, the plate spring 27 is fixed on the rear valve cover 2 through the inner hexagonal cylindrical head screw 24, the belleville spring 26 is arranged on the upper door lock of the first full-thread stud 18, the first fire-resistant washer 28 is arranged above the packing pad 16, the second fire-resistant washer 29 is arranged above the first fire-resistant washer 28, and the shaft-used spring ring 30 is arranged between the valve rod 7 and the connecting disc 13, the third refractory gasket 31 is disposed between the valve body 1 and the bottom end of the rear bonnet 2.

The working principle is as follows: when using this big metal seal ball valve, at first need carry out a simple understanding to this big metal seal ball valve, the user places the device in appointed position, the fluid passes through back valve gap 2, spheroid 3, the passageway that preceding disk seat 4 and back disk seat 5 constitute jointly, the velocity of flow of valve body 1 can be adjusted to rotatory valve rod 7, preceding disk seat 4 is by first dish spring 6, pretension is realized to second dish spring 17, accomplish the low pressure seal of valve, be metal seal between spheroid 3 and the disk seat, back disk seat is installed on valve body 1 through leaf spring 27 and interior hexagonal cylinder head screw 24 in addition, be metal seal between spheroid 3 and preceding disk seat 4, metal seal between valve body 1 and back disk seat 5, because the spherical face of disk seat has the automatic centering effect with the ball, so not only can be better realize sealed, and the not appear using the condition that the sealing is not hard up after a period. Those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a big metal seal ball valve, includes valve body (1), first dish spring (6), valve rod (7), thrust gasket (8), guide bearing (9), pack and press cover (10), support (12), key (14), packing pad (16), first full-thread double-screw bolt (18), first nut (19), second full-thread double-screw bolt (20), second nut (21), third full-thread double-screw bolt (22), third nut (23), elasticity cylindric lock (25), disc spring (26), leaf spring (27), first fire washer (28), spring ring (30) and third fire washer (31) are used to the axle, its characterized in that: the ball valve is characterized in that two ends of the bottom of the valve body (1) are respectively connected with a rear valve cover (2) and a front valve cover (15), the bottom of the interior of the valve body (1) is provided with a ball body (3), the upper end of the front valve cover (15) is connected with a front valve seat (4), the upper end of the rear valve cover (2) is connected with a rear valve seat (5), a first disc spring (6) is arranged between the front valve seat (4) and the front valve cover (15), a second disc spring (17) is arranged below the first disc spring (6), the valve rod (7) is arranged above the ball body (3), a thrust gasket (8) is arranged on the valve rod (7), guide bearings (9) are arranged on two sides of the middle of the valve rod (7), packing pressing sleeves (10) are arranged on two sides of the bottom of the valve rod (7), packing pressing plates (11) are arranged above the packing pressing sleeves (10), and the support (12) is fixedly connected above the valve body (, the valve body is characterized in that a connecting disc (13) is connected onto the support (12), the key (14) is fixed to the upper portion of the valve rod (7) through an elastic cylindrical pin (25), the packing pad (16) is arranged below the packing pressing sleeve (10), the support (12) is connected with the valve body (1) through a first full-thread stud (18) and a first nut (19), the plate spring (27) is arranged between the rear valve cover (2) and the ball body (3), the plate spring (27) is fixed to the rear valve cover (2) through an inner hexagonal cylindrical head screw (24), the belleville spring (26) is arranged on the upper door lock of the first full-thread stud (18), the first fire-resistant washer (28) is arranged above the packing pad (16), a second fire-resistant washer (29) is arranged above the first fire-resistant washer (28), and the shaft spring ring (30) is arranged between the valve rod (7) and the connecting disc (13), the third fireproof gasket (31) is arranged between the valve body (1) and the bottom end of the rear valve cover (2).

2. A large metal-sealed ball valve according to claim 1, wherein: the valve body (1) is connected with the rear valve cover (2) through a third full-thread stud (22) and a third nut (23), the number of the third full-thread studs (22) is two, and the valve body (1) is connected with the front valve cover (15) through the third full-thread studs (22) and the third nut (23).

3. A large metal-sealed ball valve according to claim 1, wherein: the rear valve seat (5) is connected to the valve body (1) through an inner hexagonal socket head cap screw (24) and a plate spring (27).

4. A large metal-sealed ball valve according to claim 1, wherein: metal sealing is arranged between the rear valve seat (5) and the front valve seat (4) and the ball body (3), and metal sealing is also arranged between the valve body (1) and the rear valve seat (5) and the front valve seat (4).