CN2439575Y

CN2439575Y - Floatation type automatic compensation valve

Info

Publication number: CN2439575Y
Application number: CN 00226845
Authority: CN
Inventors: 史作钦
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-30
Filing date: 2000-09-30
Publication date: 2001-07-18
Anticipated expiration: 2010-09-30

Abstract

The utility model relates to a floatation type automatic compensation valve, which is characterized in that a valve plate and a supporting base of the valve plate are separated. A plurality of supporting springs and a guide mechanism for the valve plate moving are arranged between the valve plate and the supporting base of the valve plate, and the supporting springs make the valve plate tightly bunt a valve seat. The springs are arranged on a valve plate along a circumference and can compensate gaps caused by various abrasions and deformations in a larger spatial scale. The springs push the valve plate under the action of a pre-stressing, and the valve plate and the valve seat are always in tightly abutted state, so the excellent seal of the valve can be ensured. The valve seat of the valve is provided with an extension part, and the matched end face of the extension part and the seal lug boss on the valve seat are positioned on a same plane. So the valve plate can lie in the seal plane of the valve seat when the valve plate is at any start-stop position. The deformation of the valve plate can be reduced.

Description

Floating type automatic compensation valve

The utility model relates to the automatic compensation valve in the air-transport system, particularly a kind of floating type automatic compensation valve.

Be extensive use of strength fluid power at present and carry powder grain material, as pulverized fuel ash, coal dust, cement or plumbago etc.The type of flow of using is Dual-Phrase Distribution of Gas olid, gas-liquid two-phase flow or solid powder/particle way flow etc.In air-transport system, to use multiple valves such as separating valve, switching valve and blocking valve.The valve latus rectum is D _N50～D _N1000.The valve of old-fashioned hard sealing configuration can not be tightly closed after valve plate is opened, and in the system that acts frequently, valve plate can be subjected to seriously washing away and wearing and tearing, thereby produces leakage.Occur a kind of more advanced valve later on, its valve plate bearing and valve plate combine as a whole, and are driven by door-hinge and horizontally rotate motion with opening/shutting valve.This valve increases a spring in the door-hinge outer end, adjust the axial displacement of valve.But it can't overcome the leakage of being out of shape or wearing and tearing and cause gradually because of valve plate.

The purpose of this utility model is the above-mentioned difficulties that will overcome prior art, and a sharp floating type automatic compensation valve is provided, and makes the valve in the air-transport system have better sealing.

Solution of the present utility model comprises door-hinge, valve plate bearing, valve plate and valve seat etc., it is characterized in that said valve plate and valve plate bearing are separated; Be provided with between the two and make valve plate push against a plurality of support springs of valve seat and the guide mechanism of valve plate motion.

The number of above-mentioned support spring can be 3～24, in valve plate upper edge circumference.

Above-mentioned guide mechanism can be made up of the axis of guide of valve plate bottom and the pilot hole on the valve plate bearing.

Can be provided with locating stud between above-mentioned valve plate and the valve plate bearing.

Above-mentioned valve seat can be provided with an extension, and the end face of this extension and the seal boss place on the valve seat are at grade.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the longitudinal section of floating type automatic compensation valve.

Fig. 2 is the plan view of valve seat extension.

Fig. 3 is the B-B sectional view of Fig. 2.

Referring to Fig. 1, the valve plate 8 of this valve floats by a plurality of support springs 4 along circumference and places on the valve plate bearing 7, and compresses valve seat 11.Spring generally is a helical spring, and number is 3～24.Support spring 4 places in the spring eye 2 of valve plate bearing, and the spring seat 3 of screw-thread fit is arranged at the bottom of the hole.The impacting force of turn spring seat adjustable springs.Valve plate 8 bottoms have the axis of guide 6, insert in the pilot hole 5 of valve plate bearing 7.Pilot hole can be circular hole or square hole.If circular hole limits its rotation with locating stud 9.Valve plate 8 can be with 7 motions of valve plate bearing.Be shaped on seal boss 10 on the valve seat 11, the boss fitting surface is through grinding, and keeps sealing on the boss so that valve plate is pressed in when closing.Valve plate bearing 7 is become one with door-hinge 1, by the door-hinge driven rotary, horizontally rotates motion with opening/shutting valve.The two can connect by key or square hole.

Referring to Fig. 2, Fig. 3, all can keep sealing with valve seat 11 well in order to make valve plate in any position that opens and closes, on valve seat, be provided with extension 16, the matching surface 15 of extension and seal boss 10 places on the valve seat are at grade.Thereby guarantee valve plate in frequent movement and the equilibrium of complex working condition lower stress, slide steadily, reduce distortion.During opening/shutting valve, valve plate 8 slides on 16 surfaces along the extension.The extension 16 of valve seat can be multiple shapes such as rectangle, circle, porous shape or grill-shaped.Have a plurality of circular holes 14 around the valve seat 11, link by screw 13 and flange 12.

This floatation type automatic compensation valve compared with prior art has following advantage:

1. spring promotes valve plate and valve seat is in the state of fitting tightly all the time under the precompression effect, thereby guarantees that valve is close Envelope is good. This seals in valve plate, the valve seat at hard is a novel structure.

2. by the floating type valve plate of many spring-loadeds, can the space in a big way in the various wearing and tearing of compensation and distortion make The gap that becomes.

3. unique gate seat extension makes valve plate all be on the sealing plane of valve seat in any position that opens and closes. Can Improve the stress of valve plate, reduce the valve plate distortion, guarantee the reliability that seals.

Claims

1, floating type automatic compensation valve comprises door-hinge (1), valve plate bearing (7), valve plate (8) and valve seat (11), it is characterized in that said valve plate (8) and valve plate bearing (7) are separated; Be provided with between the two and make valve plate (8) push against a plurality of support springs (4) of valve seat (11) and the guide mechanism (5,6) of valve plate motion.

2, automatic benefit valve valve as claimed in claim 1, the number that it is characterized in that said support spring (4) is 3～24, in valve plate (8) upper edge circumference.

3, automatic benefit valve valve as claimed in claim 1 or 2 is characterized in that said guide mechanism (5,6) is made up of the axis of guide (6) of valve plate bottom and the pilot hole (5) on the valve plate bearing.

4, automatic benefit valve valve as claimed in claim 1 or 2 is characterized in that being provided with locating stud (9) between said valve plate (8) and the valve plate bearing (7).

5, automatic compensation valve as claimed in claim 1 or 2 is characterized in that said valve seat (11) has an extension (16), and the end face of this extension (15) is located at grade with the seal boss (10) on the valve seat.