CN218031546U

CN218031546U - Sealing structure of ball core angle valve

Info

Publication number: CN218031546U
Application number: CN202222310007.6U
Authority: CN
Inventors: 徐春; 陈锡林; 卢叶军
Original assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Current assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-12-13
Anticipated expiration: 2032-09-01

Abstract

The utility model discloses a seal structure of ball core angle valve, including valve body, valve rod, ball core and hand wheel etc. mainly upwards extend the valve rod design at the top of ball core and along the axial lead disjunctor of ball core and form, pack into the back with the ball core together with the inlet opening of valve rod by the valve body again, make the ball core form the rotational positioning in the ball core intracavity, and the valve rod top stretches out the installation hand wheel that exposes from the valve rod downthehole, then is equipped with the top in the apopore tightly in the ball core side again to make the ball core form the side seal circle of rotary seal. Obviously, through the ball core angle valve of above-mentioned improvement had both been left out the disk seat and the disk seat cover of traditional ball core angle valve, had reduced the spare part quantity that needs the assembly, had avoided the independent manufacturing of valve rod and ball core again to simplify installation procedure and assembling process, so on satisfying corresponding sealed condition's basis, can be better improve production efficiency and reduce manufacturing cost.

Description

Sealing structure of ball core angle valve

Technical Field

The utility model relates to a valve seal structure specifically is a seal structure of ball core angle valve.

Background

At present, the structure of a traditional ball core angle valve generally comprises a valve body, a valve rod, a ball core, a valve seat, a hand wheel and the like, wherein a water inlet hole, a water outlet hole and a valve rod hole are arranged in the valve body, the water inlet hole and the valve rod hole are positioned on the same axis, and a ball core cavity for the rotating installation of the ball core is formed among the water inlet hole, the water outlet hole and the valve rod hole; meanwhile, the assembly sequence of the traditional ball core angle valve is that firstly a valve seat is installed on a valve seat sleeve, then a valve rod is installed from the inside to the outside of a valve rod hole, then a ball core is placed into a ball core cavity, a flat groove at the top of the ball core is matched with a flat shaft at the bottom end of the valve rod to form transmission connection, then the valve seat sleeve with the installed valve seat is screwed into a valve body in a threaded connection mode, so that the two sides of the ball core are tightly matched with the valve seat to achieve the dynamic sealing effect, and finally a hand wheel is installed at the top end of the valve rod. Therefore, the ball core angle valve not only has the defect of complicated parts, but also has more installation procedures and quite troublesome assembly process, thereby reducing the production efficiency and improving the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art's defect and provide a reduce spare part quantity, simplify installation procedure and assembling process, improve production efficiency, reduce manufacturing cost's seal structure of ball core angle valve.

The technical problem of the utility model is realized through following technical scheme:

a sealing structure of a ball core angle valve comprises a valve body, a valve rod, a ball core and a hand wheel, wherein a water inlet hole, a water outlet hole and a valve rod hole are arranged in the valve body, the water inlet hole and the valve rod hole are positioned on the same axis, a ball core cavity is formed among the water inlet hole, the water outlet hole and the valve rod hole, the valve rod is formed by integrally and upwardly extending the top of the ball core along the axis of the ball core, the ball core and the valve rod are arranged in the water inlet hole of the valve body, the ball core is enabled to form rotary positioning in the ball core cavity, and the top end of the valve rod extends out of the valve rod hole to be exposed so as to install the hand wheel; and a side sealing ring which is tightly propped against the side surface of the ball core and enables the ball core to form rotary sealing is arranged in the water outlet hole.

The axial lead of the water outlet hole is a horizontal axial lead, the axial leads of the water inlet hole and the valve rod hole are vertical axial leads, the cross point of the horizontal axial lead and the vertical axial lead is overlapped with the central point of the cavity of the ball core, and the vertical axial lead is overlapped with the rotating axial lead of the ball core.

The top surface of the ball core is provided with an upper positioning disc, the bottom surface of the ball core is provided with a lower positioning disc, the upper positioning disc limits the upward movement of the ball core and prevents the top of the ball core from deviating from the rotation axis, and the lower positioning disc prevents the bottom of the ball core from deviating from the rotation axis.

And a wear-resistant gasket is arranged between the upper positioning disc and the inner top surface of the ball core cavity, and the wear-resistant gasket is sleeved outside the valve rod.

The side sealing ring is arranged on the tight ring and is screwed into the water outlet hole by the tight ring thread to drive the side sealing ring to be tightly pressed against the side surface of the ball core.

And the side sealing ring is coated with lubricating oil and is tightly propped against the side surface of the ball core through the lubricating oil.

And a top sealing ring forming the rotary sealing of the valve rod is arranged between the valve rod and the valve rod hole.

The top end of the valve rod extends out of the valve rod hole and is exposed to form transmission connection with the hand wheel.

The hand wheel in be equipped with the mounting hole, be equipped with in this mounting hole with the hand wheel carries out the screw fixed with the valve rod top.

The top surface of the hand wheel is provided with a decorative cover which covers the mounting hole and seals the screw.

Compared with the prior art, the utility model discloses mainly be with the valve rod design upwards extend at the top of ball core and along the axial lead disjunctor of ball core and form, pack into the back with ball core together with the inlet opening of valve rod by the valve body again, make the ball core form the rotational positioning in the ball core intracavity, and the valve rod top stretches out the installation hand wheel that exposes outside from the valve rod downthehole, then is equipped with the top tightly in the ball core side in the apopore again to make the ball core form the side seal circle of rotary seal. Obviously, through the ball core angle valve of above-mentioned improvement had both been left out the disk seat and the disk seat cover of traditional ball core angle valve, had reduced the spare part quantity that needs the assembly, had avoided the independent manufacturing of valve rod and ball core again to simplify installation procedure and assembling process, so on satisfying corresponding sealed condition's basis, can be better improve production efficiency and reduce manufacturing cost.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a schematic sectional structure view of the valve body.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in fig. 1-3, the valve comprises a valve body 1, a water inlet hole 11, a water outlet hole 12, a valve rod hole 13, a ball core cavity 14, a ball core 2, an upper positioning disc 21, a lower positioning disc 22, a valve rod 23, a water through hole 24, a hand wheel 3, a mounting hole 31, a side sealing ring 4, a clamping ring 5, a wear-resistant gasket 6, a top sealing ring 7, a screw 8, a decorative cover 9.

A sealing structure of a ball core angle valve is mainly composed of a valve body 1, a valve rod 23, a ball core 2, a hand wheel 3, a tight ring 5, a side sealing ring 4 and the like, as shown in figures 1 and 2.

The valve body 1 is formed by forging and then processed by numerical control equipment, the shape of the valve body 1 is '\ 9515' -shaped, a water inlet hole 11, a water outlet hole 12 and a valve rod hole 13 are arranged in the valve body 1, the water inlet hole 11 and the valve rod hole 13 are respectively positioned at the bottom end and the top end of the '\\ 9515' -shaped valve body 1 by taking the figure 3 as an example, the water inlet hole 11 and the valve rod hole 13 are just positioned on the same axial line, the water outlet hole 12 adopts a threaded hole and is positioned at the left end of the '\\' shaped valve body 1, and a ball core cavity 14 is formed among the water inlet hole 11, the water outlet hole 12 and the valve rod hole 13 and can be used for the rotary sealing installation of the ball core 2.

When the valve body 1 is processed, the size and the surface roughness of the valve rod hole 13 are required to achieve the sealing effect, the depth of the internal thread of the water outlet hole 12 meets the design requirement, and the compression amount of the side sealing ring 4 is required to meet the sealing performance of a product in use.

The axial lead of the water outlet hole 12 is a horizontal axial lead, the axial leads of the water inlet hole 11 and the valve rod hole 13 are vertical axial leads, the intersection point of the horizontal axial lead and the vertical axial lead is overlapped with the central point of the ball core cavity 14, and the vertical axial lead is overlapped with the rotating axial lead of the ball core 2 in the ball core cavity 14.

The valve rod 23 is formed by extending upwards at the top of the ball core 2 along the axial lead of the ball core in a connected manner, so that two parts are combined into a whole to form a part which can be directly processed by numerical control equipment, and the ball core 2 also needs to ensure that the surface roughness achieves the sealing effect and the processing precision in the processing process to meet the design requirements.

Meanwhile, the top surface of the ball core 2 is provided with an upper positioning disc 21, the bottom surface is provided with a lower positioning disc 22, the outer diameter sizes of the upper positioning disc and the lower positioning disc are consistent, when the ball core 2 and the valve rod 23 are installed from bottom to top from the water inlet 11 of the valve body 1, the ball core 2 is enabled to form rotary positioning in the ball core cavity 14, and the top end of the valve rod 23 extends out of the valve rod hole 13 and is exposed to install the hand wheel 3, the upper positioning disc 21 is used for limiting the continuous upward movement of the ball core 2 and preventing the top of the ball core 2 from deviating from a rotating axis, and the lower positioning disc 22 is used for preventing the bottom of the ball core 2 from deviating from the rotating axis; thus, the accuracy and stability of the rotational positioning of the core 2 in the core cavity 14 can be better ensured by the upper and lower positioning disks.

And a wear-resistant gasket 6 is also arranged between the upper positioning disc 21 and the inner top surface of the ball core cavity 14, and the wear-resistant gasket is sleeved outside the valve rod 23 and is mainly used for reducing the friction coefficient between the top surface of the ball core 2 and the inner top surface of the ball core cavity 14 and improving the use comfort of the ball core angle valve.

Of course, the core 2 must be provided with a water passage hole 24 which can open the communication between the water inlet hole 11 and the water outlet hole 12 to form water outlet or close the communication between the water inlet hole 11 and the water outlet hole 12 to form water stop as the core 2 rotates in the core chamber 14.

In addition, the side sealing ring 4 is installed on the tight ring 5, lubricating oil is coated on the side sealing ring 4, the tight ring 5 is screwed into the water outlet hole 12 through threads, the side sealing ring 4 is driven to be tightly propped against the side face of the ball core 2 through the lubricating oil, so that the ball core forms rotary sealing, the tight ring 5 can be processed by numerical control equipment to ensure that the precision meets the design requirement of a drawing, the threads of the tight ring 5 in the water outlet hole 12 are screwed without coating glue and sealing rings, and the disassembly and maintenance are convenient.

The double-channel top sealing ring 7 is arranged between the valve rod 23 and the valve rod hole 13 to form rotary sealing of the valve rod 23, the top end of the valve rod extends out of the valve rod hole 13 to be connected with the hand wheel 3 in a transmission mode, a spline shaft and spline hole assembling mode can be adopted generally, a mounting hole 31 is formed in the hand wheel 3, a screw 8 for fixing the hand wheel 3 and the top end of the valve rod 23 is arranged in the mounting hole, a decorative cover 9 for covering the mounting hole 31 and sealing the screw 8 is arranged on the top surface of the hand wheel 3, the appearance attractiveness of the hand wheel 3 is guaranteed, and the hand wheel 3 can be rotated to drive the valve rod 23 and the ball core 2 to form rotary sealing opening and closing operation.

The utility model discloses both having left out the disk seat and the disk seat cover of traditional ball core angle valve, having reduced the spare part quantity that needs the assembly, avoided the independent manufacturing of valve rod and ball core again to simplify installation procedure and assembling process, the event is on the basis that satisfies corresponding sealed condition, improvement production efficiency that can be better and reduction manufacturing cost.

The above description is only an embodiment of the present invention, and it should be understood by those skilled in the art that any structural design equivalent to this embodiment is included in the scope of the present invention.

Claims

1. A sealing structure of a ball core angle valve comprises a valve body (1), a valve rod (23), a ball core (2) and a hand wheel (3), wherein a water inlet hole (11), a water outlet hole (12) and a valve rod hole (13) are arranged in the valve body (1), the water inlet hole (11) and the valve rod hole (13) are positioned on the same axial line, and a ball core cavity (14) is formed among the water inlet hole (11), the water outlet hole (12) and the valve rod hole (13), and is characterized in that the valve rod (23) is formed by integrally and upwardly extending the top of the ball core (2) along the axial line of the ball core, the ball core (2) and the valve rod (23) are filled in from the water inlet hole (11) of the valve body (1), the ball core (2) is rotatably positioned in the ball core cavity (14), and the top end of the valve rod (23) extends out of the valve rod hole (13) to be exposed and the hand wheel (3) is installed; and a side sealing ring (4) which is tightly propped against the side surface of the ball core (2) and enables the ball core to form rotary sealing is arranged in the water outlet hole (12).

2. The sealing structure of a ball core angle valve according to claim 1, characterized in that the axis of the water outlet hole (12) is a horizontal axis, the axis of the water inlet hole (11) and the valve rod hole (13) is a vertical axis, the intersection of the horizontal axis and the vertical axis overlaps the center point of the ball core cavity (14), and the vertical axis overlaps the rotation axis of the ball core (2).

3. A sealing structure of a ball angle valve according to claim 2, characterized in that the top surface of the ball (2) is provided with an upper positioning disc (21), the bottom surface is provided with a lower positioning disc (22), the upper positioning disc (21) limits the upward movement of the ball (2) and prevents the top of the ball (2) from deviating from the rotation axis, and the lower positioning disc (22) prevents the bottom of the ball (2) from deviating from the rotation axis.

4. A seal structure of a ball core angle valve according to claim 3, characterized in that a wear-resistant washer (6) is provided between the upper positioning disk (21) and the inner top surface of the ball core chamber (14), and the wear-resistant washer is sleeved outside the valve stem (23).

5. The sealing structure of the ball core angle valve according to claim 1, characterized in that the side sealing ring (4) is mounted on the tight ring (5), and the tight ring is screwed into the water outlet hole (12) to drive the side sealing ring (4) to be pressed against the side surface of the ball core (2).

6. A sealing structure of a ball core angle valve according to claim 5, characterized in that the side sealing ring (4) is coated with lubricating oil, and the side sealing ring is pressed against the side surface of the ball core (2) through the lubricating oil.

7. A ball core angle valve sealing structure according to claim 1, characterized in that a top sealing ring (7) forming a rotary seal of the valve rod (23) is provided between the valve rod (23) and the valve rod hole (13).

8. The sealing structure of the ball core angle valve according to claim 1, characterized in that the top end of the valve rod (23) extends out of the valve rod hole (13) and is connected with the hand wheel (3) in a transmission way.

9. A sealing structure of a ball core angle valve according to claim 1, characterized in that the hand wheel (3) is provided with a mounting hole (31) which is provided with a screw (8) for fixing the hand wheel (3) and the top end of the valve rod (23).

10. A ball core angle valve sealing structure according to claim 9, characterized in that the hand wheel (3) has a decorative cover (9) on the top surface to cover the mounting hole (31) and enclose the screw (8).