CN110878844A

CN110878844A - Ball valve

Info

Publication number: CN110878844A
Application number: CN201911074426.0A
Authority: CN
Inventors: 左宁; 宋绍龙
Original assignee: Zuo Shufang
Current assignee: YUANDA VAVLE GROUP Co.,Ltd.
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-03-13
Anticipated expiration: 2039-11-06
Also published as: CN110878844B

Abstract

The invention discloses a ball valve, which comprises a valve body, a valve ball and a valve rod, wherein the valve ball is arranged in the valve body, a through hole penetrating through the center of the ball is arranged on the valve ball, a left valve plate and a right valve plate are arranged outside the valve ball, the left valve plate and the right valve plate are spliced to seal one end of the through hole, the valve rod comprises an outer valve rod and an inner valve rod, the inner valve rod is inserted into the outer valve rod and is movably connected with the valve ball, the bottom end of the outer valve rod is connected with a gear, the two sides of the gear are respectively connected with a left guide plate and a right guide plate, the left guide plate and the right guide plate are both meshed with the gear, an arc through groove is arranged on the guide plate, the two through grooves are arranged in a splayed shape, a connecting rod is hinged on an axis pin on the valve plate, a sliding rod is hinged to a shaft pin at the other end of the connecting rod, the sliding rod slides in the through groove when, because the left valve plate and the right valve plate rotate in the valve body, the sealing performance of the ball valve can be improved.

Description

Ball valve

Technical Field

The present invention relates to a valve, and more particularly, it relates to a ball valve.

Background

The ball valve is a valve with an opening and closing part driven by a valve rod and rotating around the axis of the ball valve.

Currently, ball valves on the market comprise a valve body and a rotating ball, wherein the rotating ball rotates in the valve body to control the circulation and closing of fluid. Although the ball valve has small opening and closing resistance, the effect of adjusting the flow is weaker than that of a stop valve, so that the application range is greatly limited.

Patent No. 201811621552.9 discloses a start all-round ball valve, and the effect of ball valve regulation flow size is realized to the flashboard subassembly of installation in rotating the ball, because, need set up the rectangular channel of placing the flashboard in rotating the ball, the processing cost of rectangular channel is higher, and is time-consuming, unsuitable batch production, and in addition, the flashboard reciprocates, when having increased the ball valve volume, has weakened the sealing performance of ball valve, therefore, the urgent need for a sealing performance is good, be suitable for batch production, the ball valve that can accurate control flow.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the valve which has the effects of good sealing effect and accurate flow control.

In order to achieve the purpose, the invention provides the following technical scheme:

a ball valve comprises a valve body, a valve ball and a valve rod, wherein the valve ball is arranged in the valve body, one end of the valve rod is connected with the valve ball, the other end of the valve rod extends out of the valve body, a through hole penetrating through a ball center is formed in the valve ball, a left valve plate and a right valve plate are arranged outside the valve ball, the left valve plate and the right valve plate are spliced to seal one end of the through hole, the valve rod comprises an outer valve rod and an inner valve rod, the inner valve rod is inserted into the outer valve rod and is movably connected with the valve ball, a gear is connected to the bottom end of the outer valve rod, a left guide plate and a right guide plate are connected to two sides of the gear respectively, the left guide plate and the right guide plate are meshed with the gear, an arc through groove is formed in the upper end face of the guide plate, the through grooves in the left guide plate and the right guide plate are arranged in an eight-shaped manner, link rods are arranged on, the link rod slides in the through groove.

The invention is further configured to: the left valve plate and the right valve plate are both arc-shaped, the radian is the same as that of a valve ball, and the valve ball is connected with the inner walls of the left valve plate and the right valve plate in a friction-free sealing mode.

The invention is further configured to: the arc length of the left valve plate and the right valve plate is larger than 1/2 circumferences.

The invention is further configured to: the adjacent side concatenation in upper end edge of left valve plate and right valve plate constitutes many semicircular holes, the valve rod inserts downtheholely.

The invention is further configured to: the inside of valve body is equipped with the siphunculus, the one end of siphunculus is equipped with the opening, and the other end is sealed, the siphunculus is equipped with the entry linkage of open-ended one end and valve body, has seted up the delivery port on the outer periphery of the other end, be equipped with movable hollow tube in the siphunculus, the activity groove has been seted up along its axial on the pipe wall of the relative valve ball's of hollow tube other end, the axial both sides in activity groove all are equipped with tooth, be equipped with the pivot that one end inserted the entry on the valve body, the activity inslot is arranged in to the bottom of pivot, be equipped.

The invention is further configured to: an impeller is arranged at a water outlet in the through pipe, the impeller is connected with the through pipe through a shaft rod, and the shaft rod and the through pipe have the same axle center.

The invention is further configured to: and the water outlet is connected with a filter screen.

The invention is further configured to: when the valve ball is closed, a hemispherical sealing plate is arranged in the direction opposite to the outlet of the valve body, and the sealing plate is movably connected with the valve ball.

The invention is further configured to: the rectangle recess has been seted up at the top of valve ball, the long limit of recess constitutes 90 contained angles with the axis of through-hole, the bottom of recess is equipped with the wedge face that sets up along its length direction, the bottom of interior valve rod be equipped with be used for with wedge face complex inclined plane, interior valve rod and outer valve rod sliding connection.

The ball valve has the advantages that the slide rod slides in the guide plate by rotating the outer valve rod, the left valve plate and the right valve plate are separated in opposite directions or folded in opposite directions under the matching of the guide plate and the slide rod, and the flow can be accurately controlled.

Drawings

FIG. 1 is a schematic view of a valve ball mated with a valve plate 1;

FIG. 2 is a schematic view of the valve ball in cooperation with the valve plate 2;

FIG. 3 is a schematic view of the position of the inner valve stem on the valve ball when fluid communication is established;

FIG. 4 is a schematic view of the position of the inner valve stem on the valve ball with the fluid closed and the pressure low;

FIG. 5 is a schematic view of the position of the inner valve stem on the valve ball with fluid closed and pressure high;

FIG. 6 is a schematic view of the inner valve stem within the rectangular recess.

In the figure: 1. a valve ball; 2. an inner valve stem; 3. an outer valve stem; 4. a left valve plate; 5. a right valve plate; 6. a seal ring; 7. a left guide plate; 8. a right guide plate; 9. pipe passing; 10. a hollow tube; 11. a rotating shaft; 12. and (4) a groove.

Detailed Description

Embodiments of the valve of the present invention are further described with reference to fig. 1 to 6.

A ball valve comprises a valve body, a valve ball 1 and a valve rod, wherein the valve ball 1 is arranged in the valve body, one end of the valve rod is connected with the valve ball 1, the other end of the valve rod extends out of the valve body, a through hole penetrating through the center of the ball is arranged on the valve ball 1, a left valve plate 4 and a right valve plate 5 are arranged outside the valve ball 1, the left valve plate 4 and the right valve plate 5 are spliced to seal one end of the through hole, the valve rod comprises an outer valve rod 3 and an inner valve rod 2, the inner valve rod 2 is inserted into the outer valve rod 3 and is movably connected with the valve ball 1, the bottom end of the outer valve rod 3 is connected with a gear, two sides of the gear are respectively connected with a left guide plate 7 and a right guide plate 8, the left guide plate 7 and the right guide plate 8 are both meshed with the gear, an arc through groove is arranged on the upper end surface of the guide plate, the through grooves on the left guide plate 7 and the right guide, the link rod slides in leading to the groove, is equipped with the mount pad in the bottom of gear, and the mount pad passes through the inner wall connection of suspension rod and valve body, and left deflector 7 and right deflector 8 all with the up end sliding connection of mount pad are equipped with the spout that corresponds with leading to the groove on the mount pad.

The inner valve rod 2 is movably connected with the valve ball 1, the inner valve rod 2 is used for driving the valve ball 1 to rotate and playing a role in quickly closing and opening a flow channel, the outer valve rod 3 is connected with the guide plate through a gear, the guide plate enables the valve plate to rotate through the through groove on the guide plate in the moving process, the left valve plate 4 and the right valve plate 5 are simultaneously separated in opposite directions and simultaneously folded in opposite directions, the flow rate is accurately controlled, because the left valve plate 4 and the right valve plate 5 are both arranged to be arc-shaped, the radian is the same as that of the valve ball 1, the valve ball 1 is in friction-free sealing connection with the inner walls of the left valve plate 4 and the right valve plate 5, the sealing performance of the ball valve can be enhanced after the left valve plate 4 and the right valve plate 5 are folded, in addition, the arc length of the left valve plate 4 and the right valve plate 5 is larger than 1/2 circumferential length, the valve plate is movably connected with the valve ball 1 through the structure of the valve plate, the valve plate is prevented from, the valve rod is inserted into the hole, and the left valve plate 4 and the right valve plate 5 rotate with the semicircular hole as an axis.

The valve body is internally provided with a through pipe 9, one end of the through pipe 9 is provided with an opening, the other end of the through pipe 9 is sealed, one end of the through pipe 9 provided with the opening is connected with an inlet of the valve body, the outer circumferential surface of the other end of the through pipe is provided with a water outlet, the water outlet is connected with a filter screen, a movable hollow pipe 10 is arranged in the through pipe 9, a movable groove is formed in the pipe wall of the hollow pipe 10 opposite to the other end of the valve ball 1 along the axial direction of the hollow pipe, teeth are arranged on two axial sides of the movable groove, a rotating shaft 11 with one end inserted into the inlet is arranged on the valve. The through pipe 9 is arranged to change the flow direction of the fluid after entering the valve body, so as to prevent the fluid from directly impacting the valve ball 1, because some fluids are corrosive, such as petroleum, the valve ball 1 is impacted and corroded by the fluid for a long time, the volume of the valve ball is reduced, the error between the valve ball 1 and the valve body is increased, the sealing performance is low, the fluid flows into the through pipe 9 from the water outlet on the outer circumferential surface of the through pipe 9 and flows into the valve body, when the fluid passes through the water outlet, the filter screen filters impurities in the fluid, and because the impurities are clamped between the valve ball 1 and the valve body after entering the valve body, the resistance of the rotation of the valve ball 1 is increased, meanwhile, the torque force born by the valve rod in the rotation process is also increased, the abrasion is accelerated, the coaxiality between the valve rod and the valve ball 1 is easily reduced, the hollow pipe 10 has the function of blocking the fluid, the rotating shaft 11 is matched with the teeth on, when the rotating shaft 11 is rotated, the hollow pipe 10 moves in the inlet of the valve body, when the pipe wall of the hollow pipe 10 completely shields the water outlet, fluid is blocked, the hollow pipe 10 moves in the inlet of the valve body, the rotating shaft 11 only rotates, the sealing performance is strong, and the hollow pipe 10 is convenient to maintain and repair the ball valve.

An impeller is arranged at the water outlet in the through pipe 9 and is connected with the through pipe through a shaft rod, and the shaft rod and the through pipe 9 have the same axle center. When the impeller rotates, the blades can scrape sundries attached to the filter screen to keep the water outlet smooth, the impeller generates rotating power by means of fluid circulation, the impeller is connected to the screw rod through a bearing, one end of the through pipe 9, relative to the valve ball 1, is connected with the sealing plate in a sealing mode, one end of the screw rod is in threaded connection with the sealing plate, and the screw rod and the through pipe 9 are coaxially arranged.

When the valve ball 1 is closed, a hemispherical sealing plate is arranged in the direction opposite to the outlet of the valve body, and the sealing plate is movably connected with the valve ball 1. When the fluid is the oil, the closing plate cooperates with left valve plate 4 and right valve plate 5 for protect valve ball 1, avoid the surface of valve ball 1 to be corroded by the oil, influence sealing performance.

Rectangular recess 12 has been seted up at the top of valve ball 1, and the long limit of recess 12 constitutes 90 contained angles with the axis of through-hole, and the bottom of recess 12 is equipped with the wedge face that sets up along its length direction, the bottom of interior valve stem 2 be equipped with be used for with wedge face complex inclined plane,

interior valve stem

2 and 3 sliding connection of outer valve stem. Because the valve ball 1 is provided with the sealing ring 6 at one side opposite to the outlet, the valve ball 1 is abutted against the sealing ring 6, the larger the pressure of the fluid is, the better the sealing effect is, and because the sealing ring 6 has elasticity and has a contraction space, when the valve ball 1 is extruded towards the direction of the sealing ring 6, the valve rod can be inclined, the coaxiality of the valve rod and the valve ball 1 is reduced, the service life of the ball valve and the sealing performance between the valve rod and the valve body are affected, the rectangular groove 12 is used for the inner valve rod 2 to slide in, the inner valve rod 2 can move and rise while moving, the valve rod can be prevented from inclining in the rectangular groove, moreover, the pressure of the fluid can be judged according to the rising height of the inner valve rod 2, when the valve ball 1 is required to rotate, the inner valve rod 2 is extruded downwards, the inner valve rod 2 is restored to the initial position, the coaxiality of the valve ball 1 is kept, then, prevent that valve ball 1 from taking place relative rocking relatively in relative valve rod 2, only extrude interior valve rod 2, make the inclined plane and the bottommost cooperation of wedge face, can control interior valve rod 2 and valve ball 1's stability, simple structure, processing is also comparatively convenient, reduction in manufacturing cost.

The ball valve has the advantages that the sliding rod slides in the guide plate by rotating the outer valve rod 3, the left valve plate 4 and the right valve plate 5 are separated in opposite directions or folded in opposite directions under the matching of the guide plate and the sliding rod, the flow can be accurately controlled, and the left valve plate 4 and the right valve plate 5 rotate in the valve body, so that the sealing performance of the ball valve can be improved.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a ball valve, includes valve body, valve ball (1) and valve rod, in the valve body was arranged in to valve ball (1), the one end and the valve ball (1) of valve rod are connected, and the other end extends to outside the valve body, be equipped with the through-hole that passes the centre of sphere on valve ball (1), characterized by: a left valve plate (4) and a right valve plate (5) are arranged outside the valve ball (1), the left valve plate (4) and the right valve plate (5) are spliced to seal one end of the through hole, the valve rod comprises an outer valve rod (3) and an inner valve rod (2), the inner valve rod (2) is inserted into the outer valve rod (3), is movably connected with the valve ball (1), the bottom end of the outer valve rod (3) is connected with a gear, the two sides of the gear are respectively connected with a left guide plate (7) and a right guide plate (8), the left guide plate (7) and the right guide plate (8) are both meshed with the gear, the upper end surface of the guide plate is provided with an arc through groove, the through grooves on the left guide plate (7) and the right guide plate (8) are arranged in a splayed shape, the two valve plates are both provided with link rods, one end of the link rod is hinged with the valve plate shaft pin, the other end of the link rod is hinged with a sliding rod, and the link rod slides in the through groove.

2. The ball valve of claim 1, wherein: the left valve plate (4) and the right valve plate (5) are both arc-shaped, the radian is the same as that of the valve ball (1), and the valve ball (1) is connected with the inner walls of the left valve plate (4) and the right valve plate (5) in a friction-free sealing mode.

3. The ball valve of claim 2, wherein: the arc length of the left valve plate (4) and the right valve plate (5) is larger than 1/2 circumference.

4. The ball valve of claim 3, wherein: the adjacent side of the upper end edge of the left valve plate (4) and the right valve plate (5) is spliced to form a multi-semicircular hole, and the valve rod is inserted into the hole.

5. The ball valve of claim 4, wherein: the inside of valve body is equipped with siphunculus (9), the one end of siphunculus (9) is equipped with the opening, and the other end is sealed, siphunculus (9) are equipped with the entry linkage of open-ended one end and valve body, have seted up the delivery port on the outer periphery of the other end, be equipped with movable hollow tube (10) in siphunculus (9), the activity groove has been seted up along its axial on the pipe wall of the other end of hollow tube (10) relative valve ball (1), the axial both sides in activity groove all are equipped with tooth, be equipped with pivot (11) that one end inserted the entry on the valve body, the activity inslot is arranged in to the bottom of pivot (11), be equipped with the tooth on the bottom circumference of pivot (11.

6. The ball valve of claim 5, wherein: an impeller is arranged at a water outlet in the through pipe (9), the impeller is connected with the through pipe through a shaft rod, and the shaft rod and the through pipe (9) are coaxial.

7. The ball valve of claim 6, wherein: and the water outlet is connected with a filter screen.

8. The ball valve of claim 7, wherein: when the valve ball (1) is closed, a hemispherical sealing plate is arranged in the direction opposite to the outlet of the valve body, and the sealing plate is movably connected with the valve ball (1).

9. The ball valve of claim 8, wherein: rectangle recess (12) have been seted up at the top of valve ball (1), the long limit of recess (12) constitutes 90 contained angles with the axis of through-hole, the bottom of recess (12) is equipped with the wedge face that sets up along its length direction, the bottom of interior valve rod (2) be equipped with be used for with wedge face complex inclined plane, interior valve rod (2) and outer valve rod (3) sliding connection.