CN201992111U

CN201992111U - Wear resistant ball valve

Info

Publication number: CN201992111U
Application number: CN201120020730XU
Authority: CN
Inventors: 何生平; 徐建良
Original assignee: HANGZHOU JIANENG VALVES CO Ltd
Current assignee: HANGZHOU JIANENG VALVES CO Ltd
Priority date: 2011-01-21
Filing date: 2011-01-21
Publication date: 2011-09-28
Anticipated expiration: 2021-01-21

Abstract

A wear resistant ball valve relates to a ball valve and is suitable for automatic control of special working condition systems such as power plant dedusting, blast furnace ash discharge, coal dust conveying, an organosilicon project and the like. The wear resistant ball valve is provided with a valve body with an inlet and an outlet, and is mainly and technically characterized in that side covers are fixedly connected on the two sides of the valve body respectively; a left valve seat and a right valve seat are arranged in a cavity formed by the valve body and the side covers; the valve seat is pre-tightened by a disk spring, a sealing surface is adhered to the ball core, an inner and outer double sealing ring is sealed with inner holes of the side covers, the ball core is placed at the center of the valve body, and a valve rod is locked and installed in the valve body. Due to the wear resistant ball valve, dust medium is completely eradicated accumulating in ambient gaps of the valve seat, the dust blocking problem and the wear and the leakage of the sealing surface are well solved, and the service life of the wear resistant ball valve is ten times longer than that of a general metallic sealing ball valve.

Description

Wear resistance ball valve

Technical field:

The utility model relates to a kind of ball valve that is suitable for the automatic control of special operation condition systems such as power plant's dedusting, blast furnace ash discharge, coal dust conveying and organosilicon project.

Background technique:

Conventional metal seal ball valve, all be to adopt the metal seat valve of two activities to seal, powder is easily gathered in the gap all around, sealing surface is is very easily worn and torn, cause sealing pair to lose efficacy fast, thereby make the serious leakage of valve or stuck, only had 1～2 week general working life, seriously influenced the normal operation of whole device.

Summary of the invention:

The utility model provides a kind of stifled problem of card of dust and the wear and leakage of sealing surface, wear resistance ball valve that prolongs greatly working life of having solved.

The utility model is achieved by the following technical solution: a kind of wear resistance ball valve, be provided with the valve body of bringing outlet into, its major technique feature is each fixedly connected side cover of valve body both sides, be provided with two valve seats in the cavity that in valve body and side cover, forms, promptly each one, valve seat adopts the butterfly spring pretension, sealing surface is close to the ball core, in, outer double seal ring and the sealing of side cover endoporus, the ball core places the valve body central position, the valve rod lock is loaded in the valve body, one end inserts ball core top sectional shape with it in the corresponding groove, and the other end stretches out valve body, and is fixedly connected on actuator shaft by connecting sleeve, and do 90 ° of angles with actuator and rotatablely move, with the complete opening that changes runner between ball core and the valve seat with close.

The utility model has been stopped the stifled problem of the card that gathers, solved well dust in dust medium gap around valve seat and the wear and leakage of sealing surface fully, and be tens times of present common metal seal ball-valve working life.As silica flour discharging valve usefulness, only need to carry out in about 18 months a valve body cleaning and grind with sealing surface and get final product, alleviated use and maintenance cost greatly.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Embodiment:

Among the figure, 1-valve body, 2-stud, 3-nut, 4-seal ring, 5-side cover, 6-butterfly spring, 7-outer press ring, 8-outer seal ring, 9-valve seat, 10-inner seal ring, 11-ball core, 12-spacer, 13-valve rod, 14-filler, 15-Packing seat.

As shown in Figure 1, this wear resistance ball valve, be provided with the valve body 1 of bringing outlet into, each fixedly connected side cover 5 of valve body both sides, each valve seat 9 about being provided with in the cavity that in valve body and side cover, forms, valve seat adopts butterfly spring 6 pretensions, sealing surface is close to ball core 11, in, outer double seal ring 10,8 with side cover endoporus sealing, the ball core places the valve body central position, valve rod 13 locks are loaded in the valve body, one end inserts ball core top sectional shape with it in the corresponding groove, and the other end stretches out valve body, and is fixedly connected on actuator shaft by connecting sleeve, and do 90 ° of angles with actuator and rotatablely move, with the complete opening that changes runner between ball core and the valve seat with close.

Claims

1. wear resistance ball valve, be provided with the valve body of bringing outlet into, it is characterized in that each fixedly connected side cover of described valve body both sides, each valve seat about being provided with in the cavity that in valve body and side cover, forms, valve seat adopts the butterfly spring pretension, sealing surface is close to the ball core, in, outer double seal ring and the sealing of side cover endoporus, the ball core places the valve body central position, valve rod lock is loaded in the valve body, and an end inserts ball core top sectional shape with it in the corresponding groove, and the other end stretches out valve body, and be fixedly connected on actuator shaft, and do 90 ° of angles with actuator and rotatablely move by connecting sleeve.