CN210770368U

CN210770368U - One-way hard seal ball valve that floats

Info

Publication number: CN210770368U
Application number: CN201921347783.5U
Authority: CN
Inventors: 王顺军
Original assignee: SUZHOU SIP STARD VALVE CO Ltd
Current assignee: SUZHOU SIP STARD VALVE CO Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-16
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a one-way hard seal floating ball valve, which belongs to the field of one-way metal ball valves and comprises a valve body and a control ball valve arranged on the valve body, wherein the control ball valve comprises a ball body and a valve rod for controlling the rotation of the ball body, the ball body is arranged in the valve body, the valve rod is arranged on the valve body through a packing box, the valve rod is arranged in the packing box in a penetrating way, a containing ring groove is arranged on the side wall of the joint of the packing box and the valve rod, a packing component is embedded in the containing ring groove, the packing component has elasticity; hold annular top intercommunication and have the annular of stepping down, the notch of the annular of stepping down is seted up on the roof of gland packing, and the embedded clamping ring of locating of annular of stepping down, the lower surface and the filler subassembly butt of clamping ring, the top of clamping ring are connected with the clamp plate, are connected with the moment of torsion subassembly that drives clamp plate and clamping ring up-and-down motion between clamp plate and the gland packing. The utility model discloses have and to make it obtain effective compensation when the valve rod packing takes place wearing and tearing, keep valve seal and increase of service life's effect.

Description

One-way hard seal ball valve that floats

Technical Field

The utility model relates to an one-way metal ball valve field, in particular to one-way hard seal ball valve that floats.

Background

With the improvement of industrial technology, high-temperature media and media containing particles are more and more, the soft seal ball valve is difficult to use under the working conditions, and the metal seal ball valve is produced at the same time. The metal sealing ball valve is widely applied to industries such as petrochemical industry, coal chemical industry, polycrystalline silicon, metallurgical industry, thermal power generation, hydroelectric power generation, nuclear power and the like. The manufacturing cost of the bidirectional sealing ball valve is high, and under some conditions, the one-way sealing ball valve can meet the process requirements.

The valve rod passes through the stuffing box among the prior art and installs on the valve body, and through long-time use and take place wearing and tearing between valve rod and the stuffing box, easily cause the leakproofness to reduce to influence the life of valve, this problem is waited to solve urgently.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an one-way ball valve that floats of sealing firmly lasts and provides the loading power for the valve rod packing subassembly through the moment of torsion subassembly, has and makes it obtain effective compensation when the valve rod packing takes place wearing and tearing, keeps valve seal and increase of service life's effect.

A one-way hard seal floating ball valve comprises a valve body and a control ball valve arranged on the valve body, wherein the control ball valve comprises a ball body and a valve rod for controlling the rotation of the ball body, the ball body is arranged in the valve body, the valve rod is arranged on the valve body through a packing box, the valve rod is arranged in the packing box in a penetrating mode, a containing annular groove is formed in the side wall, attached to the valve rod, of the packing box, a packing assembly is embedded in the containing annular groove, the packing assembly has elasticity, and the packing assembly is abutted to the valve rod;

hold annular top intercommunication and have the annular of stepping down, the notch of the annular of stepping down is seted up on the roof of gland box, the embedded clamping ring of locating of annular of stepping down, the lower surface and the filler subassembly butt of clamping ring, the top of clamping ring is stretched out and is connected with the clamp plate by the notch department of the annular of stepping down, be connected with the moment of torsion subassembly that drives clamp plate and clamping ring up-and-down motion between clamp plate and the gland box roof.

The utility model discloses further set up to: the torque assembly comprises a stud, a nut and a disc spring, the stud is arranged on the pressing plate in a penetrating mode, a bolt is fixedly connected to the bottom end of the stud, the bolt is inserted into the top wall of the packing box, the disc spring is sleeved on the stud and abutted to the upper surface of the pressing plate, and the nut is in threaded connection with the stud and abutted to the top end of the disc spring.

The utility model discloses further set up to: the packing assembly comprises upper-layer woven graphite, an upper gasket, a valve rod packing layer, a lower gasket and upper-layer woven graphite, the upper gasket and the lower gasket are rubber rings, and the valve rod packing layer is a polytetrafluoroethylene sealing ring.

The utility model discloses further set up to: the spread groove has been seted up to the lower surface of clamp plate, the top of clamping ring is inlayed and is established in the spread groove, the clamping ring top is the toper and laminates with the cell wall of spread groove.

The utility model discloses further set up to: and a washer is connected between the disc spring and the nut.

The utility model discloses further set up to: and a graphite gasket is arranged at the contact position of the stuffing box and the valve body.

The utility model discloses further set up to: the ball body is connected in the valve body through the valve seat, and the spring is connected between the valve seat and the valve body.

The spheroid passes through the disk seat and installs at first in the valve body, then passes through the bolt fastening with the stuffing box on the valve body, then makes the valve rod pass in the middle of the stuffing box and link to each other with the spheroid top, packing assembly and the valve rod outside butt. The pressing ring is sleeved on the valve rod and moves downwards to the yielding ring groove, and then the pressing plate is sleeved on the pressing ring and moves downwards to the top end of the pressing ring to be embedded into the connecting groove. And fixing the disc spring on the upper end surface of the pressure plate, enabling the stud to sequentially penetrate through the disc spring and the pressure plate, and then screwing the nut. When the packing assembly is abraded due to friction with the side wall of the valve rod for a long time, the pressure spring applies downward force to the pressure plate and the pressure ring and applies pressure to the packing assembly, and due to the fact that the packing assembly has elasticity, gaps caused by abrasion are filled, and the sealing state between the packing box and the valve rod is kept.

To sum up, the utility model discloses following beneficial effect has:

1. through the elastic packing assembly and the torque assembly consisting of the stud, the nut and the butterfly valve, when the packing assembly is worn, the sealing state between the valve rod and the packing box can be kept, and the service life of the control ball valve is prolonged;

2. the top wall of the pressure ring is conical and is attached to the groove wall of the connecting groove, so that the contact area between the pressure ring and the pressure plate is increased, and the matching structure is more stable;

3. through the setting of the washer of connecting between nut and dish spring, the difficult nut graze of protection dish spring surface.

Drawings

Fig. 1 is a schematic structural diagram for embodying the whole of the present invention;

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

fig. 3 is an enlarged view of a portion B in fig. 1.

In the figure, 1, a valve body; 11. a graphite gasket; 2. a control ball valve; 21. a sphere; 22. a valve stem; 23. a valve seat; 231. a spring; 3. a stuffing box; 31. a receiving ring groove; 32. a abdicating ring groove; 33. pressing a ring; 34. a bolt; 4. a packing assembly; 41. weaving graphite on the upper layer; 42. an upper gasket; 43. a valve rod packing layer; 44. a lower gasket; 45. weaving graphite at the lower layer; 5. pressing a plate; 51. connecting grooves; 6. a torque assembly; 61. a stud; 62. a nut; 63. a disc spring; 64. a gasket.

Detailed Description

The present invention will be described in detail with reference to the attached drawings, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also regarded as the scope of the present invention without substantial changes in the technical content.

Example (b):

as shown in fig. 1, for the utility model relates to an one-way hard seal ball valve that floats, including valve body 1 and install the control ball valve 2 on valve body 1, control ball valve 2 includes spheroid 21 and control spheroid 21 pivoted valve rod 22, and spheroid 21 is installed in valve body 1 through the disk seat 23 of metal material, is connected with stuffing box 3 on the valve body 1, and valve rod 22 wears to establish in stuffing box 3 and connects on spheroid 21's top.

As shown in fig. 1 and 2, a containing ring groove 31 is formed in the side wall of the stuffing box 3 attached to the valve rod 22, a stuffing assembly 4 is embedded in the containing ring groove 31, the stuffing assembly 4 has elasticity, and the stuffing assembly 4 abuts against the valve rod 22; hold annular 31 top intercommunication and have the annular 32 of stepping down, the notch of the annular 32 of stepping down is seted up on the roof of gland box 3, and the embedded clamping ring 33 that locates of annular 32 of stepping down, the lower surface and the 4 butts of packing assembly of clamping ring 33, and the top of clamping ring 33 is stretched out and is connected with clamp plate 5 by the notch department of the annular 32 of stepping down. The lower surface of the pressing plate 5 is provided with a connecting groove 51, the top end of the pressing ring 33 is embedded in the connecting groove 51, and the top wall of the pressing ring 33 is a conical surface and is attached to the groove wall of the connecting groove 51. And a torque assembly 6 for driving the pressing plate 5 and the pressing ring 33 to move up and down is connected between the pressing plate 5 and the top wall of the stuffing box 3.

As shown in fig. 2, the packing assembly 4 includes an upper layer of woven graphite 41, an upper gasket 42, a valve stem 22 packing layer, a lower gasket 44 and the upper layer of woven graphite 41, the upper gasket 42 and the lower gasket 44 are rubber rings, and the valve stem 22 packing layer is a teflon sealing ring. The rubber ring and the polytetrafluoroethylene sealing ring both have good elasticity and sealing performance, and the sealing performance of the valve rod 22 is effectively improved through combined use. The graphite has stable chemical properties, high ignition point and high boiling point, and can play an effective fireproof role.

As shown in fig. 2, the torque assembly 6 includes a stud 61, a nut 62 and a disc spring 63, the stud 61 is inserted into the pressure plate 5, the bottom end of the stud 61 is fixedly connected with a plug pin 34, the plug pin 34 is inserted from the top wall of the stuffing box 3, the disc spring 63 is sleeved on the stud 61 and abuts against the upper surface of the pressure plate 5, and the nut 62 is in threaded connection with the stud 61 and abuts against the top end of the disc spring 63. A washer 64 is arranged between the nut 62 and the disc spring 63, and the washer 64 is also sleeved on the stud 61. The valve rod 22 is worn and torn after being used for a long time to generate a gap, the disc spring 63 has elasticity, pressure is applied to the upper surface of the pressing plate 5 to drive the pressing ring 33 to move downwards, and the rubber and the tetrafluoroethylene have elasticity, so that the gap can be filled up due to deformation, the sealing state between the valve rod 22 and the stuffing box 3 is kept, and the service life of the control ball valve 2 is prolonged.

As shown in fig. 3, a spring 231 is connected between the valve seat 23 and the valve body 1, and can provide a certain pre-tightening force to compensate for the change of the components under the action of temperature and pressure, so that the sealing surfaces of the valve body 1 and the valve seat 23 can be tightly attached when the medium flows along the length direction of the valve body 1, and a good sealing effect is achieved. The contact position of the stuffing box 3 and the valve body 1 is provided with a graphite gasket 11, so that the overall heat resistance is further improved, and the fireproof effect is improved.

The implementation principle of the above embodiment is as follows: the ball 21 is firstly installed in the valve body 1 through the valve seat 23, then the stuffing box 3 is fixed on the valve body 1 through bolts, then the valve rod 22 penetrates through the middle of the stuffing box 3 to be connected with the top of the ball 21, and the stuffing assembly 4 is abutted against the outer side of the valve rod 22. The pressing ring 33 is sleeved on the valve rod 22 and moves downwards to the yielding ring groove 32, and then the pressing plate 5 is sleeved on the pressing ring 33 and moves downwards until the top end of the pressing ring 33 is embedded into the connecting groove 51. The disc spring 63 is fixed on the upper end surface of the pressure plate, the stud 61 sequentially penetrates through the disc spring 63 and the pressure plate, and then the nut 62 is screwed. When the packing assembly 4 is abraded due to friction with the side wall of the valve rod 22 for a long time, the pressure spring applies downward force to the pressure plate and the pressure ring 33 and applies pressure to the packing assembly 4, and due to the fact that the packing assembly 4 has elasticity, gaps caused by abrasion are filled, and the sealing state between the packing box 3 and the valve rod 22 is kept.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a one-way hard seal ball valve that floats which characterized in that: the ball valve comprises a valve body (1) and a control ball valve (2) installed on the valve body (1), wherein the control ball valve (2) comprises a ball body (21) and a control ball body (21) rotating valve rod (22), the ball body (21) is installed in the valve body (1), the valve rod (22) is installed on the valve body (1) through a packing box (3), the valve rod (22) is arranged in the packing box (3) in a penetrating mode, a containing annular groove (31) is formed in the side wall, attached to the packing box (3) and the valve rod (22), of the side wall, the packing component (4) is embedded into the containing annular groove (31), the packing component (4) has elasticity, and the packing component (4) is abutted to the valve rod (22);

hold annular (31) top intercommunication and have let annular (32), the notch of letting annular (32) is seted up on the roof of gland box (3), it locates clamping ring (33) to let annular (32) embedded, the lower surface and the filler subassembly (4) butt of clamping ring (33), the top of clamping ring (33) is stretched out and is connected with clamp plate (5) by the notch department of letting annular (32), be connected with torque assembly (6) that drive clamp plate (5) and clamping ring (33) up-and-down motion between clamp plate (5) and gland box (3) roof.

2. A one-way, hard-seal, floating ball valve according to claim 1, wherein: the torque assembly (6) comprises a stud (61), a nut (62) and a disc spring (63), the stud (61) is arranged on the pressing plate (5) in a penetrating mode, a bolt (34) is fixedly connected to the bottom end of the stud (61), the bolt (34) is inserted into the top wall of the stuffing box (3), the disc spring (63) is sleeved on the stud (61) and is abutted to the upper surface of the pressing plate (5), and the nut (62) is in threaded connection with the stud (61) and is abutted to the top end of the disc spring (63).

3. A one-way, hard-seal, floating ball valve according to claim 1, wherein: the packing assembly (4) comprises an upper layer of braided graphite (41), an upper gasket (42), a valve rod (22) packing layer, a lower gasket (44) and an upper layer of braided graphite (41), wherein the upper gasket (42) and the lower gasket (44) are rubber rings, and the valve rod (22) packing layer is a polytetrafluoroethylene sealing ring.

4. A one-way, hard-seal, floating ball valve according to claim 2, wherein: connecting groove (51) have been seted up to the lower surface of clamp plate (5), the top of clamping ring (33) inlays to be established in connecting groove (51), clamping ring (33) top is the toper and laminates with the cell wall of connecting groove (51).

5. A one-way, hard-seal, floating ball valve according to claim 4, wherein: and a washer (64) is connected between the disc spring (63) and the nut (62).

6. A one-way, hard-seal, floating ball valve according to claim 1, wherein: and a graphite gasket (11) is arranged at the contact position of the stuffing box (3) and the valve body (1).

7. A one-way, hard-seal, floating ball valve according to claim 6, wherein: the ball body (21) is connected in the valve body (1) through a valve seat (23), and a spring (231) is connected between the valve seat (23) and the valve body (1).