CN204828746U - Fixed T type tee bend ball valve - Google Patents

Abstract

The utility model provides a fixed T-type three-way ball valve, comprising a valve stem (8), a ball (7) and a valve seat (12) connected to a middle body (1), the middle body (1) and the valve seat (12) The valve seat gasket (10), sealing ring (11), valve seat pressure ring (13) and spring (14) are arranged in sequence, the middle body (1) is fixedly connected with the side body (3), and the side body (3) The upper and lower sides of the upper and lower sides are respectively connected to the base (4) and the upper cover (17), the lower side of the sphere (7) is fixedly connected with the base (4) through the lower bushing (6), and the upper side of the sphere (7) is fixed through the valve stem ( 8) It is fixedly connected with the handle (2). The utility model has the beneficial effects of simple structure, reliable sealing, convenient operation, convenient maintenance and wide application range.

Description

Fixed T-type three-way ball valve

technical field

The utility model relates to a device for cutting, distributing and changing the flow direction of a medium in a pipeline in the technical field of pipelines, in particular to a fixed T-type three-way ball valve.

Background technique

T-type three-way ball valve and gate valve belong to the same type of valve. It is a relatively new type of ball valve. Its closing part is a ball, which can make three orthogonal pipelines communicate with each other and cut off the third channel, and play the role of diversion and confluence. A valve in which the ball rotates around the centerline of the valve body to open and close. Because the T-type three-way ball valve has some unique advantages of its own structure, it has been widely used in various industries, such as no friction on the switch, no wear and tear on the seal, and small opening and closing torque. This reduces the size of the associated actuator. Equipped with a multi-turn electric actuator, it can realize the adjustment of the medium and the self-cleaning structure of the sealing surface that is strictly cut off. When the ball tilts away from the valve seat, the fluid in the pipeline passes evenly at 360° along the ball sealing surface, which not only eliminates the local erosion of the valve seat by the high-speed fluid, but also washes away the accumulation on the sealing surface, achieving the purpose of self-cleaning . The ball valve is a new type of valve that has been widely used in recent years. The hard-sealed T-type three-way ball valve has T-type and L-type.

However, most of the ball valves in the existing T-type three-way ball valves are floating ball valves, so there are the following disadvantages: First, when the medium passes through the valve, the huge force generated by the fluid pressure in front of the valve may cause the ball to move to the valve seat , so the valve seat will be subjected to excessive pressure to deform the valve seat, affecting the sealing performance of the valve, and even damage the valve, which poses a safety hazard; secondly, during the opening and closing process of the valve, the ball valve has a large torsion and is not easy to open and close.

Utility model content

Aiming at the defects existing in the existing T-type three-way ball valve, the utility model provides a fixed T-type three-way ball valve.

In order to achieve the above object, the technical scheme that the utility model takes is:

The fixed T-type three-way ball valve includes a handle, a valve seat, a valve stem and a ball connected in the seat. The seat of the fixed ball is connected to the middle body, and the seat gasket, Sealing ring, valve seat pressure ring and spring, the middle body is fixedly connected with the side body by screws, the lower side of the side body is fixedly connected with the base by screws, the upper side of the side body is fixedly connected with the upper cover by screws, and the lower side of the ball is set There is a groove on the inner wall fixedly connected to the lower bushing, and the top of the base is fixedly connected to the sphere through the fixed shaft sleeved in the lower bushing. A heat-insulating packing is arranged between the lower side of the sphere and the base, and the upper side of the sphere is provided with The groove is sleeved on the lower end of the valve stem. The upper end of the valve stem passes through the upper cover and is fixedly connected with the handle. The lower part of the upper cover is fixedly connected with an upper bushing sleeved outside the valve stem. There is a boss at the connection with the upper cover, and a thrust washer is arranged between the boss and the upper cover, and a packing is crimped between the upper part of the upper cover and the valve stem through the packing pressure plate and the packing gland;

The sphere is a T-shaped three-way sphere;

Wound gaskets made of flexible graphite are provided at the joints between the side body, the base, the upper cover and the middle body.

The beneficial effects of the utility model: the fluid resistance is small, and its resistance coefficient is equal to that of the same length pipe section; the structure is simple, the volume is small, the weight is light; compact and reliable; the operation is convenient, the opening and closing is rapid, and it only needs to rotate 90° from fully open to fully closed , to facilitate remote control; easy maintenance, simple structure of the ball valve, the sealing ring is generally movable, it is more convenient to disassemble and replace; when fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, when the medium passes , It will not cause erosion of the sealing surface of the valve; it has a wide range of applications, with a diameter ranging from a few millimeters to a few meters, and can be applied from high vacuum to high pressure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the connection of the valve body of the present invention.

Detailed ways

In order to overcome the defects existing in the existing T-type three-way ball valve, a fixed T-type three-way ball valve (as shown in Figure 1 and Figure 2) is designed, including the handle 2, the valve seat 12, the valve stem 8 and the valve connected in the valve seat 12. The sphere 7, the valve seat 12 of the fixed sphere 7 is connected on the middle body 1, and the valve seat gasket 10, the sealing ring 11, the valve seat pressure ring 13 and the spring 14 are sequentially arranged between the middle body 1 and the valve seat 12, and the middle body 1 The side body 3 is fixedly connected by screws, the lower side of the side body 3 is fixedly connected with the base 4 by screws, the upper side of the side body 3 is fixedly connected with the upper cover 17 by screws, and the lower side of the sphere 7 is provided with an inner wall fixedly connected to the lower shaft The groove of the sleeve 6 and the upper part of the base 4 are fixedly connected with the sphere 7 through the fixed shaft sleeved in the lower shaft sleeve 6. A heat-insulating packing 5 is arranged between the lower side of the sphere 7 and the base 4, and the upper side of the sphere 7 There is a groove sleeved on the lower end of the valve stem 8, the upper end of the valve stem 8 passes through the upper cover 17 and is fixedly connected with the handle 2, and the lower part of the upper cover 17 is fixedly connected with an upper bushing 16 sleeved outside the valve stem 8 , the connection between the valve stem 8 on the lower side of the upper shaft sleeve 16 and the upper cover 17 is provided with a boss, a thrust washer 9 is arranged between the boss and the upper cover 17, and a thrust washer 9 is arranged between the upper part of the upper cover 17 and the valve stem 8 The packing 18 is crimped through the packing platen 15 and the packing gland 19; the sphere 7 is a T-shaped three-way sphere; Material wound gaskets.

Simple replacement and replacement by those skilled in the art are all within the protection scope of this patent.

Claims (3)

1. stationary T-shaped tee ball valve, comprise handle (2), valve seat (12), valve rod (8) and the spheroid (7) be connected in valve seat (12), it is characterized in that, the valve seat (12) of fixing spheroid (7) is connected on middle body (1), valve washer (10) is disposed with between middle body (1) and valve seat (12), seal ring (11), valve seat trim ring (13) and spring (14), middle body (1) is fixedly connected with lateral body (3) by screw, the downside of lateral body (3) is fixedly connected with base (4) by screw, the upside of lateral body (3) is fixedly connected with upper cover (17) by screw, the downside of spheroid (7) is provided with the groove that inwall is fixedly connected with Lower shaft sleeve (6), the top of base (4) is fixedly connected with spheroid (7) by the stationary axle be socketed in Lower shaft sleeve (6), heat insulation packing (5) is provided with between the downside of spheroid (7) and base (4), the upside of spheroid (7) is provided with the groove be socketed on valve rod (8) lower end, the upper end of valve rod (8) passes upper cover (17) and is fixedly connected with handle (2), the bottom of upper cover (17) is fixedly connected with and is socketed in valve rod (8) Upper shaft sleeve outward (16), the valve rod (8) of Upper shaft sleeve (16) downside is provided with boss with the joint of upper cover (17), thrust washer (9) is provided with between boss and upper cover (17), filler (18) is crimped with by hold-down grid (15) and filler pressing sleeve (19) between the top of upper cover (17) and valve rod (8).

2. stationary T-shaped tee ball valve according to claim 1, is characterized in that, described spheroid (7) is T-shaped threeway spheroid.

3. stationary T-shaped tee ball valve according to claim 1 and 2, it is characterized in that, described lateral body (3) is provided with the spirotallic gasket of Expanded graphite material with the joint of base (4), upper cover (17) and middle body (1).