CN204312751U - The valve seat combination structure of easy maintenance - Google Patents

Abstract

The utility model relates to a valve seat assembly structure with easy maintenance, which comprises a valve body, a valve seat, a valve ball, a retaining ring, a spring seat and a spring. The valve seat, the valve ball is installed coaxially between the valve seats on both sides; the valve body on the lateral outer side of the valve seat has an inner shoulder, and the valve body is installed coaxially between the outer edge of the valve seat and the inner shoulder of the valve body. The retaining ring, the spring seat and the spring have a supporting ring installed between the valve seat and the retaining ring. A sealing ring is installed between the supporting ring and the valve seat. The diameter of the outer edge of the supporting ring is larger than that of the valve seat. A stretching plate is installed symmetrically on the top between the outer edges of the support rings, the spreading plate is located in the valve body radially outside the valve seat, and the spreading plate is a telescopic rod device. The utility model provides convenient assembly and maintenance, and can directly replace the valve seat or ball, saves maintenance time, improves work efficiency, and effectively reduces maintenance costs.

Description

Easy maintenance valve seat combination structure

technical field

The utility model belongs to the field of valves, in particular to a valve seat combined structure with easy maintenance.

Background technique

At present, the existing top entry ball valve is mainly composed of a ball, a valve seat and a sealing ring. The existing top-entry ball valve is difficult to assemble and maintain the ball and valve seat, and online maintenance is not possible, resulting in high product maintenance costs.

After searching, the following published prior patent technologies were found:

The quick-change valve (CN103322225A) whose valve plate and valve seat can be disassembled online solves the problems of difficult replacement of wearing parts and high maintenance cost. The bonnet and the valve body are fixedly connected by bolts, the inner circular wall and the upper surface of the bonnet are respectively connected with the vertical surface and the horizontal surface of the L-shaped upper flange, and the first screw connects the upper flange to the bonnet. The upper flange and the valve cover are sealed with a sealing ring. The ceramic valve seat with an L-shaped cross-section is located in the annular groove on the lower horizontal surface of the upper flange. The pressure ring cooperates with the annular step of the ceramic valve seat. Fixedly connected on the upper flange, the valve plate is movably connected with the rotating arm, the rotating shaft is fixedly connected with the rotating arm, and the inner diameter of the valve cover is larger than the outer diameter of the valve plate.

A check valve with replaceable valve seat (203532877U), including a valve body, a valve cover and a valve disc. The valve cover is fixed on the valve body through studs. The valve disc is fixed in the valve body by a snap ring. There are pin holes on the valve disc. Corresponding and penetrating shaft holes are opened on both side walls of the valve body. The pin shaft holes and shaft holes form a hinged fit through the inserted pin shaft. The ends of the holes are sealed by screw plugs. The utility model overcomes the defect that the valve seat of the ordinary check valve cannot be replaced in the prior art. Through the above design, the valve seat of the check valve can be easily replaced, which reduces the maintenance cost, and has the advantages of simple and compact structure, easy assembly Fast, reliable advantages.

Comparative analysis shows that the technical content of this patent application has a relatively large difference in technical features compared with the prior art.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a valve seat combination structure with simple structure, scientific design, convenient installation, safety, reliability and easy maintenance.

The utility model solves its technical problem and realizes by taking the following technical solutions:

An easy-to-maintain valve seat combination structure, including a valve body, a valve seat, a valve ball, a retaining ring, a spring seat, and a spring. A transverse channel is formed in the valve body, and valve seats are installed laterally and coaxially symmetrically on both sides of the valve body. A valve ball is installed coaxially between the valve seats on both sides; the valve body on the lateral outer side of the valve seat has an inner shoulder, and a retaining ring and a spring are installed coaxially between the outer edge of the valve seat and the inner shoulder of the valve body. Seat and spring, the contact surface of the valve ball and the valve seat is installed with an elastic sealing ring, which is characterized in that: a support ring is installed between the valve seat and the retaining ring, and a sealing ring is installed between the support ring and the valve seat to support The diameter of the outer edge of the ring is larger than that of the valve seat, and a spreader plate is installed symmetrically between the outer edges of the support ring at both ends of the valve ball. The spreader plate is located in the valve body radially outside the seat. The spreader plate is telescopic. pole device.

Moreover, the end face of the support ring is made into a U-shaped groove structure.

Advantage and positive effect of the present utility model are:

The utility model provides convenient assembly and maintenance, can directly replace the valve seat or ball, saves maintenance time, improves work efficiency, and effectively reduces maintenance costs.

Description of drawings

Fig. 1 is a partial cross-section of a side view of the sealing structure of the present utility model;

Fig. 2 is a schematic diagram of the structure of the supporting ring in Fig. 1;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is a cross-sectional view of the overall assembled top view structure of the utility model.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

A combination structure of valve seat that is easy to maintain, including valve body 4, valve seat 6, valve ball 7, retaining ring 3, spring seat 2 and spring 1, and a transverse channel is formed in the valve body, and both sides of the valve body 4 are horizontally and simultaneously The valve seat 6 is installed axially symmetrically, and the valve ball 7 is installed coaxially rotating between the valve seats on both sides; in order to maintain the sealing performance of the valve seat, the valve body on the lateral outer side of the valve seat has an inner shoulder, and the valve body on the outer edge of the valve seat A retaining ring 3, a spring seat 2 and a spring 1 are installed coaxially with the inner shoulder of the valve body in sequence. The contact surface of the seat is equipped with an elastic sealing ring.

The innovation point of the present utility model is:

A supporting ring 5 is installed between the valve seat and the retaining ring. A sealing ring is installed between the supporting ring and the valve seat. The diameter of the outer edge of the supporting ring is larger than that of the valve seat. A spreader plate 8 is installed on the symmetrical top, and the spreader plate is located in the radially outer valve body of the valve seat, and the spreader plate is a telescopic rod device.

As shown in Figure 3, the end surface of the support ring is made into a U-shaped groove structure, so that the support rings on both sides can be opened by using the spreader plate without dismantling the support ring, and the valve seat or valve ball can be disassembled and replaced from above.

The installation method of this structure is as follows:

Put the valve seat assembly (including sealing ring, support ring, retaining ring, spring seat, spring) into the valve body, support the support ring and other components through 8 support rods (the spring is compressed), and put the ball and valve seat together In the cavity, the support rod is loosened and taken out, the valve seat assembly is restored to the working state by the spring force, when repairing and replacing, only need to use the support rod to open the support ring assembly, and take out the valve seat and the ball. The structure is easy to install and has low maintenance cost.

Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications can be made without departing from the spirit and scope of the utility model and the appended claims. It is possible, therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims (2)

1. the valve seat combination structure of an easy maintenance, comprise valve body, valve seat, valve ball, back-up ring, spring seat and spring, be shaped with crosspassage in valve body, in valve body, both sides transverse uniaxial is symmetrically installed with valve seat, and between the valve seat of these both sides, coaxial rotation is provided with valve ball; The valve body of valve seat lateral outer side is shaped with internal shoulder, back-up ring, spring seat and spring is coaxially installed with successively between valve seat outer and the internal shoulder of valve body, the surface of contact of valve ball and valve seat is provided with elastic seal ring, it is characterized in that: between valve seat and back-up ring, a bracing ring is all installed, between this bracing ring and valve seat, seal ring is installed, the outer of bracing ring is diametrically greater than valve seat, between the bracing ring outer of valve ball transverse ends, equal symmetry is top-loaded with a distraction plate, this distraction plate is positioned at the valve body of the radial outside of valve seat, and this distraction plate is Telescopic rod device.

2. the valve seat combination structure of easy maintenance according to claim 1, is characterized in that: the end face of described bracing ring is made as U-groove bevel structure.