CN102261486B

CN102261486B - High-pressure stop/ pollution discharge ball core valve

Info

Publication number: CN102261486B
Application number: CN 201110044596
Authority: CN
Inventors: 高良君; 盛宝祥; 马修水; 王志涛; 李志杰; 冯宝令
Original assignee: ZIBO BOSHAN EXPLOSION-PROOF ELECTRICAL APPARATUS FACTORY Co Ltd
Current assignee: Shandong shield explosion proof equipment Technology Co., Ltd.
Priority date: 2011-02-24
Filing date: 2011-02-24
Publication date: 2013-03-13
Anticipated expiration: 2031-02-24
Also published as: CN102261486A

Abstract

The invention discloses a high-pressure stop/ pollution discharge ball core valve, belonging to the field of high-pressure valve devices. The valve comprises a valve body (1) and a valve core (5); the valve core (5) is of a ball shape, and is provided with a key slot; and a liquid inlet (8) and a liquid outlet (12) are arranged outside the valve body (1). The valve is characterized in that the valve core (5) is installed in the valve body (1) through a valve seat (6); the valve core is connected with a handle (5) or a speed reduction motor through a rotary shaft (2); two pressure balance channels (13) which are communicated with each other and have equal apertures are arranged at two sides of the valve core (5) in the valve body (1); one end of each pressure balance channel (13) is communicated with a main channel in the valve body (1), and the other end of each pressure balance channel (13) is sealed with a seal screw (14) and a seal ring (7), and thus a closed water groove is formed. The valve has the advantages of flexible opening, reliable sealing and small rotation torque, and can be used in fluid with high pressure and serious pollution, and the valve can be used alternatively under program automatic control and manual control.

Description

A kind of high-pressure stop/pollution discharge ball core valve

Technical field

A kind of high-pressure stop/pollution discharge ball core valve belongs to the high pressure valve device field.

Background technique

At present, ball core valve is widely used in water pipe and relevant switch and flow control, the structure of existing ball core valve has two kinds, a kind of is that the ball core separates with axle, namely in the centre of valve body spherical valve core is installed, and the top of spool is provided with a groove, the axle that is plugged on the groove seals by seal ring, axle extends to the valve body outside, the passage in the corresponding spool of the liquid inlet and outlet of valve, and another kind is exactly that spool and axle are integrated; All there is a problem in the valve of these two kinds of forms, that is exactly: the friction of spool and valve inner spare is larger, and spool is subject to certain pressure, has the excessive problem of moment of rotation, spool tilts easily at valve inner, deflection, during handle with sleeve, spool is difficult for rotating, and handle rotation difficulty or handle easily occurs transfer the problem that spool does not turn, through long-term friction, spool leaks because of wearing and tearing easily, causes the whole valve of needs dismounting, brings many inconvenience for maintenance and replacing.

In addition, existing valvular blowdown adopts sealing with the plug blowdown of taper pipe thread or with the sealing means of the nonmetal sealing material such as teflon and metal mostly, adopt the sealing blowdown valve of taper pipe thread plug, in fact be exactly one and be processed with the plug that taper pipe thread is used in sealing, when the needs blowdown, plug to be screwed down from valve body, realize that the valve lumen communicates with atmosphere, the dirt of discharge valve lumen, major defect is that plug repeatedly causes the screw thread of sealing usefulness to damage after valve body screws down, it is unreliable to cause sealing, and working life is short, time-consuming taking a lot of work; Another kind of blowdown valve seals owing to nonmetal sealing materials such as having adopted teflon, surpass nonmetallic Applicable scope in temperature or pressure, be that temperature is when surpassing 200 ℃ or pressure medium and surpassing 15MPa, or when being arranged in the medium, just can not use more, larger hard particles, even in normal Applicable scope, the life-span of this kind blowdown valve is also relatively short.

Summary of the invention

The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of and open flexibly, sealing is reliable, rotation torque is little, the high-pressure stop/pollution discharge ball core valve of long service life.

The technical solution adopted for the present invention to solve the technical problems is: this high-pressure stop/pollution discharge ball core valve, comprise valve body and spool, spool is spherical in shape, with keyway, the valve body outside is provided with liquid entering hole and liquid outlet, it is characterized in that: spool is installed in the valve body by valve seat, spool is provided with steel ball by rotating shaft connecting handle or reducing motor between rotating shaft one end and the axle sleeve; In valve body inner spool bilateral symmetry pressure equalisation passage that twice communicate, equal aperture is set, two pressure equalisation passage, one end respectively with valve body in the main passage connect, the other end seals with sealing screw and seal ring, form closed circuit tank, liquid entering hole is arranged at valve body upper-end surface and the quick plug that is threaded, liquid outlet is arranged at valve body one side and the quick socket that is threaded, two pressure equalisation passage are arranged at the upper and lower both sides at center spool place, liquid entering hole and liquid outlet all with spool in through hole be connected.Adopt pressure balanced principle, opened cleverly the passage with equal aperture in valve body inner spool both sides, effectively solved the excessive problem of torsion, pressure is put on the opposite of stress surface, make the suffered pressure balance of spool, so that the rotation of spool is flexible, and not easy to wear.

Described liquid entering hole is arranged at valve body one side, and liquid outlet is located at the liquid entering hole below, is in same plane with liquid entering hole, and two pressure equalisation passage are arranged at the arranged on left and right sides at center spool place.

Compared with prior art, the beneficial effect that has of the present invention is:

1, unlatching is flexible, rotation torque is little, has mainly adopted pressure balanced principle, sets up two pressure equalisation passage at valve inner, solved cleverly the excessive problem of torsion, pressure is put on the opposite of stress surface, and pressure balance is so that valve opening is more flexible, and is time saving and energy saving;

2, sealing is reliable, filth-discharging effect is good, effectively prolonged the working life of valve, large flow blowdown is so that latus rectum is programmable larger, the sorrow that does not have obstruction, blowdown rapidly, thoroughly, reliably do not need frequent cleaning, reliability height and cost are low, solved effectively that the sealing of existing blowdown valve is unreliable, working life short, the defectives such as narrow application range are avoided the in use phenomenons such as evaporating, emitting, dripping or leaking of liquid or gas at sewage draining exit place of valve.

Description of drawings

Fig. 1 is the embodiment of the invention 1 plan view cross-sectional schematic.

Fig. 2 is the embodiment of the invention 1 side view cross-sectional schematic.

Fig. 3 is the embodiment of the invention 2 plan view cross-sectional schematic.

Fig. 4 is the embodiment of the invention 2 valve body worm's eye view cross-sectional schematic.

Fig. 5 is the embodiment of the invention 2 side view schematic representation.

Wherein: 1, valve body 2, axle 3, axle sleeve 4, steel ball 5, spool 6, valve seat 7, seal ring 8, liquid entering hole 9, gland 10, handle 11, screw 12, liquid outlet 13, pressure equalisation passage 14, sealing screw 15, thread bush.

Fig. 1 ~ 2nd, most preferred embodiment of the present invention, the present invention will be further described below in conjunction with accompanying drawing 1 ~ 5:

Embodiment

Embodiment 1

With reference to accompanying drawing 1 ~ 2: use as blowdown valve

This high-pressure stop/pollution discharge ball core valve, comprise valve body 1, spool 5 and valve seat 6, spool 5 is installed in the valve body 1 by valve seat 6, spool 5 is spherical in shape, with keyway, valve body 1 bi-side are provided with liquid entering hole 8 and liquid outlet 12, liquid entering hole 8 is arranged at valve body 1 upper-end surface and the quick plug that is threaded, liquid outlet 12 is arranged at valve body 1 one sides and the quick socket that is threaded, through hole in liquid entering hole 8 and liquid outlet 12 and the spool 5 is connected, upper in valve body 1 inner spool 5 centers, lower bilateral symmetry is set up two and is communicated, the pressure equalisation passage 13 of equal aperture, two pressure equalisation passage, 13 1 ends respectively with the interior main passage of valve body 1 UNICOM, the other end seals with sealing screw 14 and seal ring 7, and spool 5 is by screw 11 and axle 2 mounting handles 10.

Adopted pressure balanced principle, open cleverly the passage with equal aperture in valve body 1 inner spool 5 both sides, effectively solved the excessive problem of torsion, pressure is put on the opposite of stress surface, make the suffered pressure balance of spool 5, so that the rotation of spool 5 is flexible, and it is not easy to wear, the assembly material that valve body 1 and other are not stated is corrosion-resistant stainless steel, Nickel Plating Treatment behind rotating shaft 2 and the spool 5 material corrosion resistance stainless steel cementations, and valve seat 6 materials are the H62 copper material.

Working procedure is as follows:

The present invention is when using as blowdown valve, liquid entering hole 8 connects the sewage draining exit of its upper unit by quick plug, by handle with

sleeve

10 or 5 rotations of reducing motor band movable valve plug, open or close the present invention with this, liquid enters valve body 1 inside by liquid entering hole 8, and by the main passage in the valve body 1, rotational valve core 5, when the main passage was in channel status, then the liquid spool 5 of flowing through was discharged by liquid outlet 12.

Embodiment 2

With reference to accompanying drawing 3 ~ 5: use as stop valve

The novel automatic backwash system that also can be used for filter of this use uses as stop valve, i.e. recoil valve in the backwashing system; Liquid entering hole 8 is arranged at valve body 1 front-end face, liquid outlet 12 is located at liquid entering hole 8 belows, be in same plane with liquid entering hole 8, liquid entering hole 8 connects the filter pile-up valve base system, liquid outlet 12 connects the recoil tube of filter, be equipped with on the valve body 1 at liquid entering hole 8 places that thread bush 15, two pressure equalisation passage 13 are arranged in the valve body 1, the arranged on left and right sides of spool 5 centers.

Working principle is identical with embodiment 1 with working procedure.

The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.

Claims

1. high-pressure stop/pollution discharge ball core valve, comprise valve body (1) and spool (5), spool (5) is spherical in shape, with keyway, valve body (1) outside is provided with liquid entering hole (8) and liquid outlet (12), it is characterized in that: spool (5) is installed in the valve body (1) by valve seat (6), spool (5) is provided with steel ball (4) by rotating shaft (2) connecting handle (10) or reducing motor between rotating shaft (2) one ends and the axle sleeve (3); In valve body (1) inner spool (5) bilateral symmetry pressure equalisation passage (13) that twice communicate, equal aperture is set, two pressure equalisation passage (13) one ends connect with the interior main passage of valve body (1) respectively, the other end forms closed circuit tank with sealing screw (14) and seal ring (7) sealing; Liquid entering hole (8) is arranged at valve body (1) upper-end surface and the quick plug that is threaded, liquid outlet (12) is arranged at valve body (1) one side and the quick socket that is threaded, two pressure equalisation passage (13) are arranged at the upper and lower both sides of spool (5) center, liquid entering hole (8) and liquid outlet (12) all with spool (5) in through hole be connected.

2. a kind of high-pressure stop/pollution discharge ball core valve according to claim 1, it is characterized in that: described liquid entering hole (8) is arranged at valve body (1) one side, liquid outlet (12) is located at liquid entering hole (8) below, be in same plane with liquid entering hole (8), two pressure equalisation passage (13) are arranged at the arranged on left and right sides of spool (5) center.