CN101943273A

CN101943273A - Energy-saving eccentric semi-ball valve

Info

Publication number: CN101943273A
Application number: CN 201010295588
Authority: CN
Inventors: 凃习刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-29
Filing date: 2010-09-29
Publication date: 2011-01-12

Abstract

The invention relates to a ball valve, in particular to an energy-saving eccentric semi-ball valve, which comprises a valve body. An eccentric valve shaft is arranged in the valve body and is provided with a sealing ball crown. The energy-saving eccentric semi-ball valve is characterized by also comprising an adjustable valve seat matched with the sealing ball crown, wherein the valve seat is arranged on the inner side of the side wall of a medium outlet of the valve body; the side wall of the medium outlet of the valve body and the corresponding peripheral part of the valve seat are provided with two groups of screws, one group of screws pass through through holes on the side wall of the valve body and are in threaded connection with screw holes on the end face of the valve seat, and the other group of screws pass through screw holes on the side wall of the valve body and the front ends of the crews are used for pressing against the end face of the valve seat; the two groups of screws are arranged at intervals on the peripheral part; and the two groups of screws are matched with each other to adjust and fix the position of the valve seat, so that a reliable seal pair is formed between the valve seat and the sealing ball crown. The energy-saving eccentric semi-ball valve has the advantages of assembly at one time, convenient debugging, obvious increase of a medium circulation area of the valve, reduction of pressure loss of the valve during medium circulation, and obvious energy-saving effect.

Description

Energy-conservation eccentric half-ball valve

Technical field

The present invention relates to ball valve, particularly a kind of energy-conservation eccentric half-ball valve.

Background technique

At present, as Fig. 1, shown in Figure 2, eccentric half-ball valve comprises valve body 1, dispose eccentric valve shaft in the valve body, eccentric valve shaft is provided with eccentric semi-spherical 8, sealing spherical crown 7 is installed on the eccentric semi-spherical 8, valve seat 6 with sealing spherical crown 7 phase configuration is installed in the valve body media outlet, valve seat is equipped with valve seat trim ring 4 on 6 exterior edge faces, the edge of valve seat trim ring 4 is equipped with one group of socket head screw 3, and socket head screw 3 passes on the sidewall that valve seat trim ring 4 is fixed in valve body 1, and one group of Cock screw 5 that is used to regulate its radial position also is installed on the valve seat 6, the installation direction of Cock screw 5 along valve seat 6 radially also disposes seal ring 2 between valve seat 6 and the valve body 1.

Above-mentioned existing eccentric half-ball valve has following shortcoming: 1, the valve seat 6 owing to most of eccentric half-ball valves just in time is installed in the valve body media outlet, therefore taken the certain space of valve body media outlet, make that the relative media outlet place, media outlet place of valve body is a undergauge, the pressure loss at media outlet place is bigger, in general, the actual circulation area at valve body media outlet place is 64% of a valve body medium inlet current global mechanism area.2, being installed in the valve seat 6 at valve body media outlet place and the axial distance of sealing spherical crown 7 guarantees by processing, (particularly when valve seat seals firmly with the sealing spherical crown) repeatedly trial assembly, measurement, processing during assembling, and surveying is stronger, and the employee is had relatively high expectations.3, in use valve seals the sealing pair that forms between valve seat 6 and the sealing spherical crown 7 because sealing by continuing to fasten in case wearing and tearing have only, and the benefit amount of tasting is little; Therefore its implementation result is relatively poor.

Summary of the invention

Technical problem to be solved by this invention is the technical deficiency at above-mentioned existence, and a kind of increase valve circulation area is provided, and reduces damage by water, assembles easy energy-conservation eccentric half-ball valve.

The technological scheme that the present invention is adopted for its technical problem of solution is: energy-conservation eccentric half-ball valve, comprise valve body, dispose eccentric valve shaft in the valve body, eccentric valve shaft is provided with the sealing spherical crown, its difference is: also comprise one with sealing spherical crown phase configuration and adjustable valve seat, described valve seat is installed in the inside sidewalls at valve body media outlet place, with the corresponding circumferential location of valve seat two groups of screws are installed on the sidewall at described valve body media outlet place, wherein the screw that passes on the end face of body wall through hole and valve seat of one group of screw is threaded, its screw front end was used for roof pressure valve seat end face after another group screw passed the body wall screw, two groups of screws are distributed in distance at circumferential position, the position of adjusting and fixed valve base thereby two groups of screws cooperatively interact makes to form reliable sealing pair between valve seat and the sealing spherical crown.

The invention has the beneficial effects as follows: 1, two groups of screws use of working in coordination, thus can control valve seat move axially and can be fixed on the desired position with valve seat, makes and forms reliable sealing pair between valve seat and the spherical crown.

2, the valve seat that is installed on the inside sidewalls at valve body media outlet place need not dispose the valve seat trim ring again, thereby simplifies the structure, and has made things convenient for installation, has reduced cost.

3, two groups of screws use of working in coordination, can play a role to the radial regulation of valve seat, working as valve seat and spherical crown in addition is in when sealing contact condition, spherical crown also will apply certain squeezing action to valve seat, thereby compensate the gap between valve seat and the spherical crown automatically, use Cock screw to come the radial regulation fixed valve base the prior art and need not to resemble.

The present invention can once finish assembling, and debugging is convenient, has also strengthened the medium circulation area of valve in addition significantly, has reduced the pressure loss of medium circulation valve, and energy-saving effect is obvious.

Description of drawings

Fig. 1 is an eccentric half-ball valve structural representation of the prior art of the present invention;

Fig. 2 is the A portion structure for amplifying schematic representation of Fig. 1;

Fig. 3 is an eccentric half-ball valve structural representation of the present invention;

Fig. 4 is the B bilge construction enlarged view of Fig. 3;

Fig. 5 is the C bilge construction enlarged view of Fig. 3;

Fig. 6 is the end-face structure schematic representation of valve body media outlet of the present invention;

Wherein, 1-valve body, 2-seal ring, 3-socket head screw, 4-valve seat trim ring, 5-Cock screw, 6-valve seat, 7-sealing spherical crown, 8-eccentric semi-spherical.

Embodiment

Below in conjunction with accompanying drawing the specific embodiment of the invention is described further.

As Fig. 3, Fig. 4, shown in Figure 5, a kind of energy-conservation eccentric half-ball valve in the embodiment of the invention, comprise valve body 1, dispose eccentric valve shaft in the valve body, eccentric valve shaft is provided with eccentric semi-spherical 8, sealing spherical crown 7 is installed on the eccentric semi-spherical 8, be installed in valve body media outlet place inside sidewalls with sealing spherical crown 7 phase configuration and adjustable valve seat 6, with valve seat 6 corresponding circumferential location two groups of screws are installed on the sidewall at described valve body media outlet place, wherein the screw that passes on the end face of body wall through hole and valve seat 6 of one group of screw is threaded, another group screw passes the end face that its screw front end behind the body wall screw is used for roof pressure valve seat 6, two groups of screws are distributed in distance at circumferential position, the position of adjusting and fixed valve base 6 thereby two groups of screws cooperatively interact makes to form reliable sealing pair between valve seat 6 and the sealing spherical crown 7.

Valve seat 6 uses seal ring 2 to seal with the media outlet place of valve body 1.

In above-mentioned two groups of screws, one group of optional socket head screw 3, another organizes optional Cock screw 5, can certainly substitute above screw by known and habitual fastening piece with other.

Compare with eccentric half-ball valve of the prior art, the energy-conservation eccentric half-ball valve in the embodiment of the invention need not use the valve seat trim ring just can reliably realize valve seat 6 and hard sealing or the soft seal of sealing between the spherical crown 7.

By trial-production, test and the use of a plurality of different inside nominal diameter specifications, practical application effect is good in the present invention.

Above embodiment is preferred embodiment of the present invention, is not any type of restriction is done in invention, and every foundation technological essence of the present invention all still belongs in protection scope of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. energy-conservation eccentric half-ball valve, comprise valve body, dispose eccentric valve shaft in the valve body, eccentric valve shaft is provided with the sealing spherical crown, it is characterized in that: also comprise one with the can regulate valve seat of sealing spherical crown phase configuration, described can regulate valve seat is installed in the inside sidewalls at valve body media outlet place, with the corresponding circumferential location of can regulate valve seat two groups of screws are installed on the sidewall at described valve body media outlet place, wherein the screw that passes on the end face of body wall through hole and can regulate valve seat of one group of screw is threaded, its screw front end was used for roof pressure can regulate valve seat end face after another group screw passed the body wall screw, two groups of screws are distributed in distance at circumferential position, the position of adjusting and stationary adjustable joint valve seat makes to form reliable sealing pair between can regulate valve seat and the sealing spherical crown thereby two groups of screws cooperatively interact.