CN2646500Y - Quick-closing ceramic core rotary valve with small starting and stopping torque - Google Patents

Abstract

The utility model disclose a quickly closing ceramic core turning valve with a smaller open and closed torsion, which is used for the occasions which are opened by impersonal forces, for example, when a driving element opens and closes the turning valve, the driving element with a smaller power can be selected. The utility model improves the prior art as below: the utility model arranges a stator of the ceramic core on a shell to make the shell not a rotation shaft load the most pressure of the transporting medium in a pipe, provides a rolling bearing between the rotation shaft and the shell, greatly reduces the torsion which is required by opening and closing the turning valve.

Description

For a short time open and close the quick closing valve type ceramic core rotary valve of torque

Technical field

The utility model relates to a kind of quick closing valve type ceramic core rotary valve, particularly a kind of less a kind of quick closing valve type ceramic core rotary valve of torque required when opening or closing.

Background technique

Present its structure of quick closing valve type ceramic core rotary valve is: moving plate directly is placed on the flat-shaped support plate of rotating shaft, and stator abuts against on the moving plate.That the medium transport pressure of conveyance conduit acts directly on is fixed, on the moving plate, rotating shaft to overcome and housing between friction torque and the friction torque between moving plate and the stator could rotate.The size of this torque is relevant with medium transport pressure, when with motor or solenoid actuated, could satisfy the unlatching of rotary valve or the requirement of closing with choosing more powerful driving element.

Summary of the invention

The purpose of this utility model provides that a kind of to open or close required torque less, and the size of medium transport pressure is to opening and closing the little a kind of quick closing valve type ceramic mould rotary valve of required torque influence.

For achieving the above object, the utility model is settled rolling bearing between rotating shaft and housing.And the hole of housing is made into step-shaped hole, and stator is placed on the step of step hole, settle an elastic element between moving plate and the rotating shaft.This elastic element can be the cylinder compression helical spring, also rubber spring or the like.Utilize this elastic element that two sealing planes of moving plate and stator are born against together tightly, this elastic element acts on the product of active force on moving plate maximum delivery pressure should be greater than via area on the stator and line transportation medium the time.

After adopting such structure, the power that the pressure of fed sheet of a media acts in the rotating shaft has reduced, and has only the product of via area and pressure.And the pressure that acts on non through hole area place has been loaded by housing.Owing to settle rolling bearing between rotating shaft and the housing, make this rotary valve open and close torque and greatly reduce again.

Description of drawings

Fig. 1 is the structure principle chart of present quick closing valve type ceramic core rotary valve.

Fig. 2 is a structure principle chart of the present utility model.

Embodiment

Figure 1 shows that the structure principle chart of quick closing valve ceramic core rotary valve commonly used in the present family.Among Fig. 1,1 is rubber gasket, and 2 is housing, and 3 is ceramic stator, 4 is ceramic moving plate, and 5 are rotating shaft, and 2a is a through hole on the housing 2, and 3a is a through hole on the stator, 5a is the flat-shaped support plate of rotating shaft, and 5b is the protruding end on this support plate, inserts the recess of moving plate 4, together rotates with axle 5 to drive sheet 4.Other is chatted as spacing (90 ° of rotations) and sealing etc. are no longer tired.The characteristics of this valve are: half-twist can make valve be in and open completely or closed condition.The pass type ceramic core rotary valve so also express one's gratification.

Shown in Figure 2 is the remodeling of rotary valve shown in Figure 1, its objective is in order to reduce moment of rotation.Concrete scheme is described below: stator is positioned on the aperture end face of step hole of housing power usefulness compression elastic element 1 realization that moving plate contact with the stator face.Elastic element 1 active force should be greater than the product of via area on pressure maximum and stator during fed sheet of a media in this pipeline.Between rotating shaft and shell, arrange a pair of radial thrust bearing spare 2, and with ending 3 lockings of sheet spare.The little hole depth of step hole should be greater than the size sum of all parts in this hole except that original paper 1 in this hole.

Certainly, the utility model also can adopt other textural association.For example: only between rotating shaft and housing, settle a cover rolling bearing.Do not settle elastic element between moving plate and rotating shaft, step hole is not made in the hole, still adopts present structure.Perhaps do not settle rolling bearing, but settle elastic element between moving plate and rotating shaft, conversion and so on all drops in the protection domain of the present utility model.

Claims (1)

1, a kind of quick closing valve type ceramic core rotary valve is made up of housing, rotating shaft and stator, moving plate etc., it is characterized in that: be mounted with rolling bearing between rotating shaft and housing; Between moving plate and rotating shaft, be mounted with elastic element; Stator is placed on the housing; The active force of the suffered medium transport pressure of stator is loaded by housing.

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