CN205001559U - Novel detachable top mounted ball valve seating structure - Google Patents

Abstract

The utility model discloses a novel detachable top mounted ball valve seating structure, including valve body, disk seat supporting, disk seat, disk seat catch and spheroid, disk seat and disk seat supporting set up between valve body and spheroid, disk seat one end and spheroid laminating, the other end passes through the disk seat catch with disk seat supporting one end to be connected, the disk seat supporting other end and valve body adaptation. The utility model discloses easy dismounting to effectively avoided having improved life in the damage of dismouting in -process to axial seal circle, easy maintenance moreover, the maintenance cost is low.

Description

A new type of detachable seat structure of top-loading ball valve

technical field

The utility model relates to a valve device, in particular to a novel detachable top-mounted ball valve seat structure.

Background technique

The existing valve seat structure is mainly composed of valve body, valve seat retaining ring, positioning pin, sealing ring, graphite rope, valve seat, coil spring, spring seat, adjustment ring, sphere, etc. This structure is difficult to assemble and disassemble. They are all relatively large, especially the axially installed sealing ring will cause wear and deformation of the sealing ring due to the large axial movement distance during installation and disassembly, which will affect the sealing performance and maintenance efficiency of the valve, and reduce the service life.

Utility model content

The utility model aims to provide a novel detachable top-mounted ball valve seat structure, which is fast in disassembly and assembly without damaging the sealing ring, good in sealing, convenient in maintenance, low in maintenance cost, long in service life and convenient in use.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

The utility model discloses a novel detachable top-mounted ball valve seat structure, including a valve body, a valve seat support, a valve seat, a valve seat lock ring and a sphere, and the valve seat and the valve seat support are arranged on the valve body and the sphere Between, one end of the valve seat fits with the sphere, the other end is connected with one end of the valve seat support through a valve seat lock ring, and the other end of the valve seat support is adapted to the valve body.

Further, the valve seat support is stepped, including a first step, a second step and a third step, a pin hole is provided on the circumference of the first step, and an annular groove A is provided on the axial surface of the third step, An annular hole B is provided on the radial surface of the third step.

Further, a valve seat retaining ring is provided on the first step, positioning pins are provided on the circumference of the valve seat retaining ring, a sealing ring is provided on the second step, and a graphite rope is provided in the annular groove A, so that A spring is arranged in the annular hole B, and the spring is axially installed.

Further, the sealing ring is a lip sealing ring, and the spring is a coil spring.

Further, an annular groove C is provided on the end surface of the end connecting the valve seat support and the valve seat, threads are provided on the outer peripheral surface, and a sealing gasket is provided in the annular groove C.

Further, the cross section of the valve seat is wedge-shaped, and the end that fits with the sphere is an inclined surface, and the inclined surface is provided with corrugations.

Preferably, the valve seat lock ring is a ferrule nut.

Further, an annular groove D is provided on the inner wall of the valve seat support.

Compared with the prior art, the utility model has the following beneficial effects: the valve seat is designed as a detachable structure, which is convenient for disassembly and assembly, and effectively avoids damage to the axial sealing ring during disassembly and assembly, thereby improving the service life, and Easy maintenance and low maintenance cost.

Description of drawings

Fig. 1 is a partial sectional view of the utility model assembled in a ball valve;

Fig. 2 is the enlarged view of I place in Fig. 1;

In the figure: 1-valve body, 2-ball, 3-seat support, 4-seat, 5-seat lock ring, 6-convex, 7-seat retaining ring, 8-locating pin, 9-lip Shape sealing ring, 10-annular groove A, 11-graphite rope, 12-coil spring, 13-annular hole B, 14-annular groove C, 15-sealing gasket, 16-pin hole, 17-annular groove D.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a new type of detachable top-mounted ball valve seat structure disclosed by the utility model includes a valve body 1, a valve seat support 3, a valve seat 4, a valve seat lock ring 5 and a ball 2, One end of the valve seat 4 and one end of the valve seat support 3 are connected between the valve body 1 and the sphere 2 through the valve seat lock ring 5, and the other end of the valve seat 4 is an inclined surface, and there are convex grooves 6 on the inclined surface, and the top surface of the convex groove 6 is connected with the sphere 2 fit, the other end of the valve seat support 3 is stepped, which is set in the valve body 1, including the first step, the second step and the third step, the first step is provided with a pin hole 16 on the circumference, and the valve seat retaining ring 7 It is fixed on the first step by the positioning pin 8, and a lip seal 9 is provided on the second step to ensure that there is no leakage between the valve seat support 3 and the valve body 1, and an annular groove A10 is provided on the axial surface of the third step. A graphite rope 11 is arranged in the annular groove A10, an annular hole B13 is arranged on the radial surface of the third step, and an axially installed coil spring 12 is arranged in the annular hole B13, and the coil spring 12 is in a compressed state; the valve seat support 3 and An annular groove C14 is arranged on the end surface connected to the valve seat 4, and a thread is arranged on the outer peripheral surface, and a sealing gasket 15 is arranged in the annular groove C14; an annular groove D17 is also arranged on the inner wall of the valve seat support 3.

The disassembly and assembly method of the utility model is as follows: when assembling, first assemble the valve seat support 3, the lip seal ring 9, the graphite rope 11, the valve seat retaining ring 7, the positioning pin 8, the coil spring 12, and the sealing gasket 15. Insert it into the valve body 1, then axially stretch the two valve seat supports 3 a little distance through the tooling, then put the valve seat 4 on the valve seat lock ring 5 and fit it tightly with the ball 2 into the valve body 1, and calibrate the position Finally, remove the tooling, and tighten the valve seat lock ring 5, so that the valve seat 4 presses the sealing gasket 15 to ensure the sealing between the valve seat 4 and the valve seat support 3, and completes the assembly of the ball 2 and the valve seat 4. When disassembling, first loosen the valve seat lock ring 5 so that it is completely separated from the valve seat support 3, and axially stretch the two valve seat supports 3 a little distance through the tooling to realize the separation of the valve seat 4 from the valve seat support 3. At this time, The valve seat lock ring 5 and the valve seat 4 can be taken out of the valve body 1 together with the ball 2 at the same time. It can be seen that during the disassembly and assembly process of the ball 2 and the valve seat 4, the axial distance of the valve seat support 3 needs to be stretched to be very small, which can effectively avoid the wear of the lip seal ring 9 during the disassembly process and ensure the ball valve Excellent sealing performance improves the service life of the ball valve.

Certainly, the present utility model also can have other various embodiments, without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model, but these Corresponding changes and deformations should all belong to the scope of protection of the appended claims of the utility model.

Claims (8)

1. a Collapsible top dress ball valve base structure, it is characterized in that: comprise valve body (1), valve seat supporting (3), valve seat (4), valve seat lock ring (5) and spheroid (2), described valve seat (4) and valve seat supporting (3) are arranged between valve body (1) and spheroid (2), described valve seat (4) one end and spheroid (2) are fitted, the other end is supported (3) one end and is connected by valve seat lock ring (5) with valve seat, valve seat supporting (3) the other end and valve body (1) adaptation.

2. a kind of Collapsible top according to claim 1 dress ball valve base structure, it is characterized in that: described valve seat supporting (3) is for stepped, comprise first step, second step and the 3rd step, described first step is circumferentially provided with pin-and-hole (16), three-stepped shaft is provided with circular groove A(10 to face), the 3rd step sagittal plane is provided with looping pit B(13).

3. a kind of Collapsible top according to claim 2 dress ball valve base structure, it is characterized in that: described first step is provided with valve seat back-up ring (7), described valve seat back-up ring (7) is circumferentially with locating stud (8), described second step is provided with seal ring, described circular groove A(10) in be provided with graphite rope (11), described looping pit B(13) in be provided with spring, described spring shaft is to installation.

4. a kind of Collapsible top according to claim 3 dress ball valve base structure, it is characterized in that: described seal ring is lip-type packing (9), described spring is helical spring (12).

5. a kind of Collapsible top according to claim 1 dress ball valve base structure, it is characterized in that: described valve seat supporting (3) is provided with circular groove C(14 with the end face that valve seat (4) is connected one end), outer peripheral surface is provided with screw thread, described circular groove C(14) in be provided with gasket seal (15).

6. a kind of Collapsible top according to claim 1 dress ball valve base structure, is characterized in that: described valve seat (4) section is wedge shape, and be inclined-plane with spheroid (2) one end of fitting, inclined-plane is provided with convex stupefied (6).

7. a kind of Collapsible top according to claim 1 dress ball valve base structure, is characterized in that: described valve seat lock ring (5) is FERRULETYPE nut.

8. a kind of Collapsible top according to claim 1 dress ball valve base structure, is characterized in that: described valve seat supporting (3) inwall is provided with circular groove D(17).