CN200958612Y

CN200958612Y - Two-way metal hard-sealed ore pulp butterfly valve

Info

Publication number: CN200958612Y
Application number: CN 200620091629
Authority: CN
Inventors: 胡德龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-20
Filing date: 2006-06-20
Publication date: 2007-10-10
Anticipated expiration: 2016-06-20

Abstract

A two-way metal hard sealing ore slurry butterfly valve is covered in the universal mechanical region. This butterfly valve is designed for that the abrasion is heavy for existent technology, the two-way pressing capability is very different and leakage happens frequently. A moving valve seat is installed between a butterfly board and a valve body, and an O-type lock ring is provided between the moving valve seat and the valve body, the valve seat press plate and the valve body; the position connected with the moving valve seat on the butterfly board is provided with a multi-layer lock ring which combines soft and hard material. Matched with triple eccentric valve plate sealing structure, the hard sealing butterfly valve is provided with a two-way block, fine sealing, automatic compensation, no noise and long service life. This butterfly valve is applied to a fluid conveying pipeline which conveys ore slurry containing hard impurities.

Description

Bidirectional metal hard-sealing ore pulp butterfly valve

Technical field

The utility model belongs to the universal machine field, mainly relates to satisfy the bidirectional metal hard-sealing ore pulp butterfly valve that carries out two-way cut-out in the pipe-line system.

Background technique

The hard seal butterfly valve of extensive use in industrial pipeline at present has characteristics such as simple in structure, good sealing effect and unlatching be convenient.But owing to be subjected to the influence of fed sheet of a media, remain in certain shortcoming and defect, as, easily foulings many, wearing and tearing by impurity in the medium of valve greatly, valve bidirectional bearing ability great disparity or the like.Make valve closing not tight, and the phenomenon of leakage occurs, cause the life cycle of valve to shorten greatly.Because the impurity in the ore pulp is more, and discharge pressure is bigger, so the butterfly valve of transfer ore pulp more is prone to wearing and tearing and leakage phenomenon.

Summary of the invention

The purpose of this utility model provides a kind of bidirectional metal hard-sealing ore pulp butterfly valve, and this butterfly valve can be effectively cuts off and regulates the bidirection press of liquid conducting pipes medium, and sealing is good, can compensate automatically.

The utility model is realized by following measure.Mainly be made up of valve body, valve seat, three-dimensional eccentric butterfly plate and seal ring, it is characterized in that: described valve seat is a slide and movable valve base, is fixed on the valve body by disc holder; End and side and valve body contact segment at valve seat are provided with the O RunddichtringO; Be provided with the O RunddichtringO between disc holder and the valve body; On disc holder, be provided with the pressure spring that compresses slide and movable valve base with the slide and movable valve base contacting point.On butterfly plate with the slide and movable valve base contacting point, multi-level, the seal ring that soft or hard combines that are installed with that stainless steel and compound polyester form by the seal ring pressing plate.

Behind the valve closing, when medium from the butterfly plate back side (one side that valve shaft is arranged) when exerting pressure because eccentric principle, butterfly plate and valve seat close tighter and tighter, obtain good sealing; When medium when exert pressure in the front of butterfly plate, slide and movable valve base moves and compresses to the butterfly plate direction under the thrust of the promotion of pressure medium and spring, obtains good sealing, realizes two way sealed, does not have and leaks.When long-term use slide and movable valve base and butterfly plate were sealed with wearing and tearing, the adjustment by pressure spring and O RunddichtringO can compensate automatically.

The beneficial effects of the utility model are, owing to adopted slide and movable valve base and O RunddichtringO structure, cooperate three-dimensional eccentric butterfly plate, make that this hard seal butterfly valve has that two way sealed is functional, compact structure, compensation and long characteristics of life-span automatically.Both can close and block medium, also can regulate the flow of medium arbitrarily, satisfy in the pipe-line system demand fully two-way cut-out.Can be applicable to transfer ore pulp etc. and contain the more liquid conducting pipes of hard thing impurity.

Description of drawings

Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the partial enlarged drawing of slide and movable valve base part among Fig. 1.1 is that butterfly plate, 2 is that seal ring pressing plate, 3 is that hexagon socket head cap screw, 4 is that multi-layer sealing ring, 5 is that slide and movable valve base, 6 is that pressure spring, 7 is that hexagon socket head cap screw, 8 is that disc holder, 9 is that valve body, 10 is that pressing plate O RunddichtringO, 11 and 12 is a slide and movable valve base O RunddichtringO among the figure.Arrow a is the opening direction of butterfly plate 1, and arrow b is the movement direction after slide and movable valve base 5 is subjected to external force.

Embodiment

Existing accompanying drawings embodiment of the present utility model.Described valve seat is a slide and movable valve base 5, is fixed on the valve body 9 by disc holder 8; End and side and valve body 9 contact segments at slide and movable valve base 5 are provided with O RunddichtringO 11 and 12; Be provided with O RunddichtringO 10 between disc holder 8 and the valve body 9; On disc holder 8, be provided with the pressure spring 6 that compresses slide and movable valve base with slide and movable valve base 5 contacting points.On butterfly plate 1 with slide and movable valve base 5 contacting points, multi-level, the seal ring 4 that soft or hard combines that are installed with that stainless steel and compound polyester form by seal ring pressing plate 2.

The opening direction of valve is the direction of arrow a among the figure, behind the valve closing, when medium from butterfly plate 1 back side (one side that valve shaft is arranged) when exerting pressure because eccentric principle, butterfly plate 1 closes tighter and tighter with valve seat, obtains good sealing; When medium when exert pressure in the front of butterfly plate 1, slide and movable valve base 5 moves and compresses to butterfly plate 1 direction under the thrust of the promotion of pressure medium and spring 6, obtains good sealing, realizes two way sealed, does not have and leaks.When slide and movable valve base and butterfly plate were sealed with wearing and tearing in long-term the use, the adjustment by pressure spring and O RunddichtringO can compensate automatically.

Claims

1, a kind of bidirectional metal hard-sealing ore pulp butterfly valve is made up of valve body, valve seat, three-dimensional eccentric butterfly plate and seal ring, it is characterized in that: described valve seat is slide and movable valve base (5), is fixed on the valve body (9) by disc holder (8); End and side and valve body (9) contact segment at valve seat (5) are provided with O RunddichtringO (12), (11); Be provided with O RunddichtringO (10) between disc holder (8) and the valve body (1); Go up and slide and movable valve base (5) contacting point is provided with the pressure spring (6) that compresses slide and movable valve base at disc holder (8); Go up and slide and movable valve base (5) contacting point at butterfly plate (1), by seal ring pressing plate (2) be installed with stainless steel and compound polyester composition at many levels, the seal ring (4) that combines of soft or hard.