CN210739444U

CN210739444U - Two-piece type ball valve with flange

Info

Publication number: CN210739444U
Application number: CN201921894688.7U
Authority: CN
Inventors: 孙德静; 谢红斌
Original assignee: Wenzhou Tianyue Fluid Equipment Technology Co ltd
Current assignee: Wenzhou Tianyue Fluid Equipment Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-06-12
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a two-piece flanged ball valve, including valve body, case, valve rod and swing handle, the valve body includes the main valve body and the time valve body, and the main valve body is connected through bolt fastening with the time valve body, and the inner chamber of the main valve body and the inner chamber of the time valve body form the runner, the case sets up in the runner, and the inboard of the main valve body is equipped with first valve seat, and the inboard of the time valve body is equipped with the second valve seat, and first valve seat and second valve seat all with case interference fit; the top end of the main valve body is provided with a valve rod seat extending upwards, the valve rod is rotatably arranged in the valve rod seat, a plurality of first sealing rings are clamped between the valve rod and the valve rod seat, and the bottom end of the valve rod extends into the flow passage and is detachably connected with the valve core; the valve rod seat is provided with arc-shaped holes on the periphery, and one end of the rotating handle extends into the arc-shaped holes to be fixedly connected with the valve rod. The utility model has the characteristics of simple structure and easy dismounting, can reduce the maintenance degree of difficulty of ball valve by a wide margin.

Description

Two-piece type ball valve with flange

Technical Field

The utility model relates to a ball valve especially relates to a make things convenient for two formula flanged ball valves of dismouting.

Background

As is well known, in China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, paper making, pharmacy, water conservancy, electric power, municipal administration, steel and the like, plays a very important role in national economy, has the action of rotating by 90 degrees, has a spherical plug body with a circular threaded hole or a channel passing through the axis of the plug body, and is widely used in the fields of water, acid, petroleum, natural gas and the like. The ball valve comprises a valve body, a ball body and a valve rod, wherein the ball body is arranged in the valve body. However, in the conventional ball valve, the ball body and the valve seat are both installed from the top of the valve body, and in the assembling process, if the ball body needs to be well matched with the valve seat, the assembling is very complicated, and meanwhile, the maintenance of the ball valve is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two formula flanged ball valve, the utility model has the characteristics of simple structure and easy dismounting, can reduce the maintenance degree of difficulty of ball valve by a wide margin.

In order to achieve the above object, the utility model provides a following technical scheme: the two-piece type ball valve with the flange comprises a valve body, a valve core, a valve rod and a rotating handle, wherein the valve body comprises a main valve body and a secondary valve body, the main valve body and the secondary valve body are fixedly connected through bolts, a flow passage is formed by an inner cavity of the main valve body and an inner cavity of the secondary valve body, the valve core is arranged in the flow passage, a first valve seat is arranged on the inner side of the main valve body, a second valve seat is arranged on the inner side of the secondary valve body, and the first valve seat and the second valve seat are in interference; the top end of the main valve body is provided with a valve rod seat extending upwards, the valve rod is rotatably arranged in the valve rod seat, a plurality of first sealing rings are clamped between the valve rod and the valve rod seat, and the bottom end of the valve rod extends into the flow passage and is detachably connected with the valve core; the valve rod seat is provided with arc-shaped holes on the periphery, and one end of the rotating handle extends into the arc-shaped holes to be fixedly connected with the valve rod.

Preferably, the inboard of inferior valve body is equipped with the clamping ring, the clamping ring stretches into in the inner chamber of the main valve body and with the inner wall interference fit of the main valve body, press from both sides between the inner wall of the clamping ring and the main valve body and be equipped with the second sealing washer.

Preferably, the bottom end of the valve rod is provided with a key tenon, and the top end of the valve core is provided with a key groove matched with the key tenon.

Preferably, the contact surface of the first valve seat and the valve core is an arc surface attached to the valve core, and the contact surface of the second valve seat and the valve core is an arc surface attached to the valve core.

Preferably, the first valve seat and the second valve seat are made of polytetrafluoroethylene.

Preferably, the rotary handle is in threaded connection with the valve stem.

Preferably, the bottom of the main valve body is provided with a threaded hole for communicating the flow passage with the outside atmosphere, the threaded hole is in threaded connection with an opening and closing nut, and the bottom of the main valve body is provided with a sealing gasket matched with the opening and closing nut.

Preferably, a threaded part is turned on the outer side wall of the secondary valve body.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a valve body divide into the main valve body and inferior valve body, the main valve body passes through bolted connection with inferior valve body, the case sets up in the runner that the inner chamber by the main valve body and the inner chamber combination of inferior valve body formed, the inboard of the main valve body sets up first disk seat, the inboard of inferior valve body sets up the second disk seat, can fix first disk seat and second disk seat respectively on the main valve body and inferior valve body in advance, again with the case embedding main valve body in the inner chamber, the valve rod that will be connected with the swing handle is connected with the case in stretching into the inner chamber of the main valve body by the top of the main valve body, again with inferior valve body and main valve body lock and use bolt fixed connection, make the both sides of case closely laminate with first disk seat and second disk seat respectively, realize the holistic installation of ball valve, it only needs the reverse. Therefore, the utility model has the characteristics of simple structure and easy dismounting, can reduce the maintenance degree of difficulty of ball valve by a wide margin.

2. The utility model discloses inferior valve body supports the inner wall of the main valve body through its inboard clamping ring to press from both sides between the inner wall of the clamping ring and the main valve body and establish the second sealing washer, can not only improve the fixed effect between the main valve body and inferior valve body, can improve the sealing performance of being connected between the main valve body and the inferior valve body moreover.

3. The utility model discloses the valve rod is connected through the mode that the key tenon agrees with mutually with the keyway with the case, and connection structure is stable, easy dismounting.

4. The utility model discloses be the cambered surface with the surface design of two disk seats and case contact for two disk seats are inseparabler with the case laminating, thereby improve blocking effect of ball valve when the case closes.

5. The utility model discloses two disk seats adopt the polytetrafluoroethylene material, and polytetrafluoroethylene has good slip characteristic, is suitable for the occasion of strict demand low coefficient of friction and wear-resisting consumption usage. The valve seat can not only enhance the sealing performance between the valve core and the valve seat, but also reduce the friction force between the valve core and the valve seat, thereby prolonging the service life of the valve seat, reducing the rotating torque of the valve core and leading the opening and closing of the valve core to be easier.

6. The utility model discloses a mode that swing handle and valve rod pass through threaded connection makes the dismouting of the two more convenient.

7. The utility model discloses screw hole and screw in opening and close nut are seted up to main valve body bottom, set up the leakproofness test that opens and close the nut and make things convenient for the ball valve and the waste material of discharging when wasing the valve body inside.

8. The utility model discloses the lateral wall of inferior valve body is gone up the car and is had screw thread portion, and the convenience is connected with the butt joint pipeline.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B in FIG. 2;

fig. 4 is a left side view of the main valve body.

In the figure: 1. a valve body; 2. a valve core; 3. a valve stem; 4. turning a handle; 5. a main valve body; 6. a sub-valve body; 7. a flow channel; 8. a first valve seat; 9. a second valve seat; 10. a valve stem seat; 11. an arc-shaped hole; 12. a first seal ring; 13. pressing a ring; 14. a second seal ring; 15. a threaded portion; 16. a keyway; 17. a key; 18. a threaded hole; 19. opening and closing the nut; 20. And a 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.

The utility model provides a two formula flanged ball valves as shown in attached figure 1-4, including valve body 1, case 2, valve rod 3 and swing handle 4, valve body 1 includes main valve body 5 and time valve body 6, and the projection of main valve body 5 left end face is square shape, and main valve body 5 and time valve body 6 are through bolt fixed connection, and the inner chamber of main valve body 5 and the inner chamber of time valve body 6 form runner 7, case 2 sets up in runner 7, and the inboard of main valve body 5 is equipped with first valve seat 8, and the inboard of time valve body 6 is equipped with second valve seat 9, and first valve seat 8 and second valve seat 9 all with case 2 interference fit; the top of the main valve body 5 is equipped with the valve stem seat 10 that upwards extends, valve rod 3 rotates and sets up in valve stem seat 10, presss from both sides between valve rod 3 and the valve stem seat 10 and is equipped with a plurality of first sealing washer 12, and first sealing washer 12 is used for strengthening the leakproofness between valve rod 3 and the valve stem seat 10, and the bottom of valve rod 3 stretches into in the runner 7 and can dismantle with case 2 and be connected, and its concrete connection mode is: the bottom end of the valve rod 3 is provided with a key 17, the top end of the valve core 2 is provided with a key groove 16 matched with the key 17, the valve rod 3 and the valve core 2 are connected in a mode that the key 17 is matched with the key groove 16, the connecting structure is stable, the disassembly and the assembly are convenient, and in addition, the bottom end of the key 17 is designed into a cambered surface, so that the key can be more easily inserted into the key groove 16; arc hole 11 has been seted up to the week side of valve rod seat 10, the one end of swing handle 4 stretch into in the arc hole 11 with valve rod 3 fixed connection, its concrete connection mode is: the rotary handle 4 is in threaded connection with the valve rod 3, so that the disassembly and the assembly of the rotary handle and the valve rod are more convenient.

As shown in fig. 1, a press ring 13 is arranged on the inner side of the secondary valve body 6, the press ring 13 extends into the inner cavity of the main valve body 5 and is in interference fit with the inner wall of the main valve body 5, and a second seal ring 14 is clamped between the press ring 13 and the inner wall of the main valve body 5. The secondary valve body 6 is abutted against the inner wall of the main valve body 5 through the pressing ring 13 on the inner side of the secondary valve body, and the second sealing ring 14 is clamped between the pressing ring 13 and the inner wall of the main valve body 5, so that the fixing effect between the main valve body 5 and the secondary valve body 6 can be improved, and the connection sealing performance between the main valve body 5 and the secondary valve body 6 can be improved.

As shown in fig. 1, the contact surface of the first valve seat 8 and the valve element 2 is an arc surface attached to the valve element 2, and the contact surface of the second valve seat 9 and the valve element 2 is an arc surface attached to the valve element 2, so that the two valve seats are attached to the valve element 2 more tightly, and the blocking effect of the ball valve when the valve element 2 is closed is improved. Meanwhile, the valve core 2 can be better supported by the cambered surface of the valve seat.

The first valve seat 8 and the second valve seat 9 are made of polytetrafluoroethylene. The polytetrafluoroethylene has excellent sliding characteristics and is suitable for occasions where low friction coefficient and abrasion resistance are strictly required. The valve seat can not only enhance the sealing performance between the valve core 2 and the valve seat, but also reduce the friction force between the valve core 2 and the valve seat, thereby prolonging the service life of the valve seat, reducing the rotating torque of the valve core 2 and ensuring that the valve core 2 is opened and closed more easily.

As shown in fig. 3, a threaded hole 18 communicating the flow passage 7 with the outside atmosphere is formed at the bottom of the main valve body 5, the threaded hole 18 is in threaded connection with an opening and closing nut 19, and a sealing gasket 20 matched with the opening and closing nut 19 is arranged at the bottom of the main valve body 5. The provision of the on-off nut 19 facilitates the tightness test of the ball valve and the discharge of waste material when cleaning the interior of the valve body 1.

As shown in fig. 1, a threaded portion 15 is turned on the outer side wall of the secondary valve body 6, so as to facilitate connection with a butt joint pipeline.

The working principle is as follows: the utility model discloses a valve body 1 divide into the main valve body 5 and inferior valve body 6, the main valve body 5 passes through bolted connection with inferior valve body 6, case 2 sets up in the runner 7 that is formed by the inner chamber of the main valve body 5 and the inner chamber combination of inferior valve body 6, the inboard of the main valve body 5 sets up first disk seat 8, the inboard of inferior valve body 6 sets up second disk seat 9, can fix first disk seat 8 and second disk seat 9 respectively on the main valve body 5 and inferior valve body 6 in advance, again with the inner chamber of the main valve body 5 of case 2 embedding, the valve rod 3 that will be connected with spiral handle 4 is connected with case 2 in stretching into the inner chamber of the main valve body 5 by the top of the main valve body 5, again with inferior valve body 6 and main valve body 5 lock joint mutually and use bolt fixed connection, make the both sides of case 2 closely laminate with first disk seat 8 and second disk seat 9 respectively, realize the holistic installation of ball valve, it only needs reverse operation. Therefore, the utility model has the characteristics of simple structure and easy dismounting, can reduce the maintenance degree of difficulty of ball valve by a wide margin.

Claims

1. Two formula flanged ball valves, including valve body (1), case (2), valve rod (3) and swing handle (4), its characterized in that: the valve body (1) comprises a main valve body (5) and a secondary valve body (6), the main valve body (5) is fixedly connected with the secondary valve body (6) through a bolt, a flow channel (7) is formed by an inner cavity of the main valve body (5) and an inner cavity of the secondary valve body (6), the valve core (2) is arranged in the flow channel (7), a first valve seat (8) is arranged on the inner side of the main valve body (5), a second valve seat (9) is arranged on the inner side of the secondary valve body (6), and the first valve seat (8) and the second valve seat (9) are in interference fit with the valve core (2); the top end of the main valve body (5) is provided with a valve rod seat (10) extending upwards, the valve rod (3) is rotatably arranged in the valve rod seat (10), a plurality of first sealing rings (12) are clamped between the valve rod (3) and the valve rod seat (10), and the bottom end of the valve rod (3) extends into the flow channel (7) and is detachably connected with the valve core (2); arc-shaped holes (11) are formed in the peripheral sides of the valve rod seat (10), and one end of the rotating handle (4) extends into the arc-shaped holes (11) and is fixedly connected with the valve rod (3).

2. The two-piece flanged ball valve of claim 1, wherein: the inboard of inferior valve body (6) is equipped with clamping ring (13), clamping ring (13) stretch into the inner chamber of the main valve body (5) and with the inner wall interference fit of the main valve body (5), press from both sides between the inner wall of clamping ring (13) and main valve body (5) and be equipped with second sealing washer (14).

3. The two-piece flanged ball valve of claim 1, wherein: the bottom end of the valve rod (3) is provided with a key tenon (17), and the top end of the valve core (2) is provided with a key groove (16) matched with the key tenon (17).

4. The two-piece flanged ball valve of claim 1, wherein: the contact surface of the first valve seat (8) and the valve core (2) is a cambered surface attached to the valve core (2), and the contact surface of the second valve seat (9) and the valve core (2) is also a cambered surface attached to the valve core (2).

5. The two-piece flanged ball valve of claim 1, wherein: the first valve seat (8) and the second valve seat (9) are made of polytetrafluoroethylene.

6. The two-piece flanged ball valve of claim 1, wherein: the rotary handle (4) is in threaded connection with the valve rod (3).

7. The two-piece flanged ball valve of claim 1, wherein: the bottom of the main valve body (5) is provided with a threaded hole (18) which communicates the flow channel (7) with the outside atmosphere, the threaded hole (18) is in threaded connection with an opening and closing nut (19), and the bottom of the main valve body (5) is provided with a sealing gasket (20) matched with the opening and closing nut (19).

8. The two-piece flanged ball valve of claim 1, wherein: and a thread part (15) is turned on the outer side wall of the secondary valve body (6).