CN2138222Y

CN2138222Y - Special Sluice valve for mineral slurry

Info

Publication number: CN2138222Y
Application number: CN 92229023
Authority: CN
Inventors: 黄聚亮
Original assignee: LOW TEMP VALVE PLANT KAIFENG C
Current assignee: LOW TEMP VALVE PLANT KAIFENG C
Priority date: 1992-07-29
Filing date: 1992-07-29
Publication date: 1993-07-14
Anticipated expiration: 2002-07-29

Abstract

The utility model relates to a special Sluice valve for mineral slurry, belonging to the valve gate which is used for delivering particle and slurry. The special Sluice valve for mineral slurry comprises a valve body 1, an elastic seal ring 2, a flashboard 3, a pressure board 4, a valve rod 5, a valve-stem nut 6, a support 7 and a hand wheel 8, which is characterized in that the center of circle of the bottom cut circle arc of the valve body deviates the center of circle of the center of the valve body; the degree of eccentricity is upward h; the elastic seal ring 2 is a totally enclosed integrating seal ring whose cross-section can be various different shape cross-sections such as, D shape, trapezium, isosceles triangle, etc.; a pair of inside and outside seals is formed by the elastic seal ring 2, the U shape flashboard 3 and the pressure board 4. The utility model has the advantages of without residual slurry, flexibly opening and close, long service life, good tightness, compact structure, convenient installation and maintenance.

Description

Special Sluice valve for mineral slurry

The utility model relates to the special-purpose gate valve of a kind of ore pulp, belongs to particle slurry conveying valve.

At present, gate for adapted in the particle slurry conveying engineering pipeline is all selected common gate valve mostly for use, yet common gate valve is applied to then exist in the particle slurry pipeline certain shortcoming, as abrading valve sealing face easily owing to be mingled with solid particle between flashboard and the valve seat, therefore cause leakage, pipeline internal medium is hardened, and valve is not opened.In addition, because the bottom sediment, valve is in throttle for a long time, and wearing and tearing are accelerated, and causes valve body worn out.Moreover valve parts damages the back and is difficult for repairing, and whole valve is scrapped.

The purpose of this utility model is at the shortcoming and defect that is used for the ducted common gate valve of particle slurry conveying engineering, propose the special-purpose gate valve of a kind of ore pulp, this gate valve is not deposited slurry, is opened and closed flexible, long service life, can install in the pipeline arbitrary position, compact structure, installation and maintenance are convenient.

The utility model is realized by following technical measures:

The special-purpose gate valve of this ore pulp comprises valve body 1, elastic seal ring 2, flashboard 3, pressing plate 4, valve rod 5, Stem Mut 6, support 7, handwheel 8, it is characterized in that the center of circle of the kerve circular arc of valve body 1 departs from the center of circle at valve body center, its degree of eccentricity is the h that makes progress, and elastic seal ring 2 is a totally enclosed type integral sealing circle.The cross section of this elastic seal ring 2 can be various profiled-cross-sections such as D type, ladder type, isosceles triangle.External sealed was paid in totally enclosed type integral sealing circle 2 was formed with U type flashboard 3 and pressing plate 4.

Valve body 1 is cast integrated type, but the center of circle at valve body center is departed from the center of circle of valve body kerve circular arc, circle is parallel with circle at the bottom of the pipeline at the bottom of making valve, thereby eliminated the vortex and the sediment district of valve bottom, pipeline endoparticle MEDIA FLOW plays the current stabilization effect when making valve opening through herein the time, and granule medium can be discharged smoothly, thereby prolonged the working life of valve, can solve because when valve body bottom dust stratification and card slag, valve flashboard closes not in place, the problem that the drive unit overload is damaged.In the cross section of valve body installed inside is that external sealed was paid in totally-enclosed seal ring and U type flashboard 3, the pressing plate 4 of D type or other shapes formed, it is reliable that sealing is paid sealability, because of elastic seal ring sealing itself is just reliable, moment of torsion is little, with the pipeline internal medium increased pressure, sealing force also increases, and forms selfsealings.When needs overhauled, valve needn't be unloaded down from pipeline, as long as flashboard 3 is put forward, had changed elastic seal ring just.Flashboard 3 is contained on the valve rod 5, and support 7 and valve body 1 are connected by bolt, and Stem Mut 6 is contained in the top of support 7, Stem Mut 6 can with handwheel 8, or worm gear, air pressure, hydraulic pressure, Electric actuator connect, and adopts different driving mode.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is that the master of the special-purpose gate valve of ore pulp looks sectional view;

Fig. 2 is the plan view that the special-purpose Gate-valve sealing of ore pulp is paid;

Fig. 3 is that the master of seal ring looks sectional view.

1 is valve body, the 2nd among the figure, elastic seal ring, the 3rd, flashboard, the 4th, pressing plate, the 5th, valve rod, the 6th, Stem Mut, the 7th, support, the 8th, handwheel.

Valve body 1 is cast integrated type, and the center of circle at valve body center is departed from the center of circle of valve body kerve circular arc, and throw of eccentric is h, as shown in Figure 1.External sealed was paid in the totally-enclosed seal ring 2 of D type was formed with U type flashboard 3 and pressing plate 4.Valve rod 5 and flashboard 3 are connected by bearing pin, and it is fastening that support 7 and valve body 1 are connected by bolt, and Stem Mut 6 matches with valve rod 5 and is contained on the support 7, and handwheel 8 is contained on the Stem Mut 6, and is fastening by nut then.

The utility model is compared with existing common gate valve and is had the following advantages:

When valve closing, there are not dust stratification and card slag phenomenon, flashboard can cut out and put in place, stifled exhausted interior leakage; When valve opening, eliminated vortex and the sediment district of valve bottom, the granule medium in the pipeline is played the current stabilization effect, can prolong the service life of valve. Adopt D type or the totally-enclosed sealing ring of other cross sectional shapes moment of can reducing friction, improve sealing property, the periodic replacement sealing ring can make the life-span of this valve improve exponentially.

Claims

1, the special-purpose gate valve of a kind of ore pulp, this gate valve comprises valve body 1, elastic seal ring 2, flashboard 3, pressing plate 4, valve rod 5, Stem Mut 6, support 7, handwheel 8, it is characterized in that the center of circle of the kerve circular arc of valve body 1 departs from the center of circle at valve body center, its degree of eccentricity is the h that makes progress, and elastic seal ring 2 is a fully closing type integral sealing circle.

2, gate valve according to claim 1, the cross section that it is characterized in that described elastic seal ring 2 is various profiled-cross-sections such as D type, ladder type, isosceles triangle.

3, gate valve according to claim 1 is characterized in that external sealed is paid in described totally enclosed type integral sealing circle 2 and U type flashboard 3 and pressing plate 4 compositions.