CN2226185Y - Partial rotary valve driver locking mechanism - Google Patents

Abstract

The utility model relates to a partial rotary valve driver locking mechanism which is provided with a key 1 and a locking head 7, wherein, the right end of the locking head 7 is a cylinder body with a spiral groove, and a triangular boss can be inserted into a triangular groove at the left end of the key 1. When a valve is operated, the unlocking operation is carried out at first, the key 1 is rotated in the counterclockwise direction to drive the locking head 7 to move right to ensure that the locking head exits from an indexing hole on a flange of a valve body 8. When the valve is operated to the required station, the key 1 is rotated in the clockwise direction to ensure that the locking head is inserted into the index hole. Then, the key 1 is extracted to achieve the purpose that valve stations are locked reliably and are free from the interference of human factors of the outside world.

Description

Part turning valve drive unit locking framework

The utility model belongs to the locking framework of a kind of part turning valve (as butterfly valve, ball valve etc.) drive unit.Be used for the open and close of valve and the locking and the location of Flow-rate adjustment, particularly Flow-rate adjustment had the valve locking and location of being strict with and not influenced by extraneous personal factor.

As everyone knows, the open and close of valve and Flow-rate adjustment rely on actuator (be operating device, comprise manually, worm drive etc.) to realize.And in pipe network operation required rate-of flow size by corresponding the reaching of scale that is marked on the pointer on the actuator and the valve body.Can positive stop when requiring to operate, also must guarantee under required flow, can lock, be not subjected to the influence of misoperation NOR operation personnel operation lack of standardization when particularly valve is worked under this flow.

A kind of known actuator locking device is seen in former Deutsches Reichs-Patent 0021885, and it is a kind of wrench operated mechanism with location, locking effect.The characteristics of this mechanism are to be provided with two locating studs on valve body, can contact with the corresponding boss of spanner respectively, through when assembling locating stud are filed and are repaiied, to reach control valve open and close position.On valve body method basket, be drilled with simultaneously 7 apertures, when spanner valve opening to certain position, the boss of Wrench head inserts in the aperture, makes the spanner location, to guarantee the required aperture of valve.This device can be accomplished more accurately to locate, but repaiies locating stud, the technology more complicated because assembling the time need be filed.In case particularly back, spanner location just can't be taken off.Like this, be difficult to avoid operator's misoperation NOR operation personnel's operation lack of standardization, thereby can not guarantee that valve is in a certain normal position on demand.

The domestic locking device that is adopted in the part turning valve is all similar to said apparatus.Introduce butterfly valve respectively as China's patent 88212280 and 91200673.0 and reached relevant operation, positioning means.The former has introduced the legend with the wrench operation, and the latter has introduced the legend with Worm gear mechanism.Both can both accomplish more certainly valve opening size, but all can not behind valve flow control unit location, pin actuator reliably, thereby be difficult to prevent extraneous artificial factor and the change that produces valve opening, can't guarantee stability of flow by valve.

The purpose of this utility model is that a kind of locking framework will be provided, and it can guarantee that part turning valve drive unit accurately locatees, and reliable locking particularly is not subjected to the interference of extraneous personal factor, valve is under the needed aperture always works.

The purpose of this utility model be achieved in that with operating device that the live axle of valve is connected on install one tapered end, this tapered end can insert on the valve body method basket and be used to demarcate in the index hole of valve opening value.When valve need move, extract tapered end, by the actuator operated valve to required working position.Use key (promptly operating spanner) tapered end to be inserted in the respective apertures of valve body method indigo plant then, the transmission shaft of actuation mechanism and valve is located simultaneously, determined that the working position of valve takes out key then, make this working position no longer be subjected to the interference of extraneous personal factor, thereby make rate-of flow not be subjected to unexpected disturb and change.

An embodiment described in the utility model is incited somebody to action with reference to the accompanying drawings makes explanations.Accompanying drawing is a kind of sectional drawing of part turning valve drive unit locking framework.

Press accompanying drawing, this locking framework is made up of key (promptly operating spanner) 1 and tapered end 7.Key 1 is installed in the housing 2 of locking framework.The right-hand member of tapered end 7 is a band spiral fluted cylindrical body, and this cylinder right-hand member has a triangle boss can insert in the left end triangular groove of key 1.The left end of tapered end 7 is a cone, can insert in the valve working position index hole of demarcating on the method indigo plant of valve body 8.Spring 3 compresses tapered end 7 in the index hole of demarcating on the valve body 8 method basket by packing ring 5.One end of elbow 11 fuses by key 10 and transmission shaft 9, and the other end is connected with the housing 2 of locking framework by screw thread and tightens up with pin 6.Screw 4 is screwed in the spiral chute of tapered end 7 right-hand members by housing 2.Change into straight-line displacement with the rotation motion that forces tapered end 7.

When carrying out valve open and close operation or transferring to a certain station manipulation, earlier carry out release: key 1 is inserted in the right-hand member triangle boss of tapered end 7 by following program, by counter clockwise direction key 1, drive tapered end 7 moves to right and makes its left end cone by withdrawing from the index hole on the method indigo plant of valve body 8.When valve is operated to required station, lock: i.e. key 1 along clockwise direction, tapered end 7 is moved to left and insert on the method indigo plant of valve body 8 in the corresponding index hole, take out key 1 then, the station of valve is in be not subjected to extraneous artificial in the lock state of disturbing, thereby reach the purpose of medium by the stability of flow of valve.

Can find out from above-mentioned principle: lock and the release mechanism of above-mentioned locking framework are applicable in many turning valves drive unit too.

Claims (3)

1. part turning valve drive unit locking framework, there are a key 1 and tapered end 7 in this mechanism, it is characterized in that: the right-hand member of tapered end 7 is the cylindrical body of a band spiral value, this cylinder right-hand member has a triangle boss can insert in the left end triangular groove of key 1, and the left end of tapered end 7 is a cone, can insert in the valve working position index hole of demarcating on the method indigo plant of valve body 8.

2. according to the described part turning valve of claim 1 drive unit locking framework, it is characterized in that: tapered end 7 relies on spring 3 effects to press in the index hole of demarcating on the method indigo plant of valve body 8.

3. according to the described part turning valve of claim 1 drive unit locking framework, it is characterized in that: insert by housing 2 by a screw 4 in described tapered end 7 spiral chutes, change into straight-line displacement with the rotation motion that forces tapered end 7.

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