CN2428660Y

CN2428660Y - Ball valve locking device

Info

Publication number: CN2428660Y
Application number: CN 00212372
Authority: CN
Inventors: 李家忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-22
Filing date: 2000-06-22
Publication date: 2001-05-02
Anticipated expiration: 2010-06-22

Abstract

The ball valve locking device comprises a lock shell, a diaphragm, a locking block, a lock seat and a locking ring. The lock ring is arranged in the lock shell in sequence, the lock block is connected with the lock shell through threads, concave spherical blind holes are respectively arranged at corresponding positions on the upper end surface of the lock seat and the lower end surface of the lock block, and a steel ball is arranged in each spherical blind hole on the upper end surface of the lock seat. The locking ring is fixed on a valve rod nut of the ball valve. The periphery of the diaphragm is clamped between the upper ring surface of the valve seat and the lower end surface of the inner convex ring of the lock shell. The utility model discloses simple structure, operating space are little, and dress card instrument does not receive the angle restriction, and the tool to lock is firm reliable.

Description

The ball valve locking device

The utility model belongs to a kind of valve rod locking device of ball valve.

In order to strengthen management to resident and enterprises and institutions' heat supply in winter, on the each household heating pipeline, install ball valve, when not handing over heating cost, the user ball valve can not closed.Locking to ball valve at present mainly contains three classes, and the first is pinned the protective housing of ball valve with bullet lock; It two is to use plastic deformation, the disposable valve rod of sealing, and destructiveness is removed protective housing during keying, changes new protective housing again; It three is to install fixed protection sleeve on valve rod additional, on this protecting cover top with locking plate, snap ring sealing.During keying, pull down snap ring, locking plate, operate with special tool.

The purpose of this utility model provides a kind of simple in structure, lockset is solid and reliable, the operating space is little, replacer is not subjected to angle limits ball valve locking device.

The purpose of this utility model realizes by following technical proposals, that is:

The ball valve locking device comprises lock housing, diaphragm, lock dog, lock, lock ring.Lock dog, lock, lock ring are installed in the lock housing successively, and lock ring connects with screw thread and lock housing, and lock is fixed in the lock housing.A plurality of recessed sphere blind holes are arranged on the upper-end surface of lock, in each recessed sphere blind hole, be equiped with steel ball.On the lower end surface of lock dog, the sphere blind hole that concaves is arranged with the corresponding section, position that following concave spherical surface blind hole is arranged on the lock upper-end surface.Lock ring is fixed on the nut of valve rod upper end of ball valve.

The lock dog upper-end surface is provided with diaphragm, and the periphery of diaphragm is clamped between the lower end surface of the upper ring surface of valve seat and lock housing internal projecting ring.There is inspecting hole at the middle part of diaphragm, to observe ball valve open and close state.

The utlity model has following advantage:

1, simple in structure, the operating space is little, replacer is not subjected to angle limits;

2, outward appearance is refining, compares small and exquisite with existing like product;

3, lockset is solid and reliable, and the lock housing steel has tamper-resistant function.

Fig. 1 is the utility model and ball valve assembling schematic representation.The utility model is described in further detail below in conjunction with accompanying drawing.

The ball valve locking device comprises lock housing 1, diaphragm 2, lock dog 3, lock 4 and lock ring 5.6 recessed sphere blind holes 6 are arranged on the upper-end surface of lock 4, in 6 recessed sphere blind holes 6, steel ball 7 are housed respectively, on the lower end surface of lock dog 3 with 6 sphere blind holes, 6 corresponding positions on, the sphere blind hole 8 that concaves is arranged respectively.Diaphragm 2, lock dog 3, lock 4 and lock ring 5 are arranged in the lock housing 1 successively from the top down.Lock ring 5 connects with screw thread and lock housing 1.The periphery of diaphragm 2 is clamped between the lower end surface of internal projecting ring 13 of the upper ring surface 12 of lock 4 and lock housing 1.Inspecting hole 14 is arranged on the diaphragm 2.Lock ring 5 is fixed on the nut 10 of valve rod of ball valve 9.When being in the lock state, lock housing 1 can rotate freely, and during keying, frame and valve rod rotate synchronously.Adopt the special opening tool 11 (considering the line part among the figure) of my design when opening and closing ball valve 9.

Claims

1, the ball valve locking device, comprise lock housing (1), it is characterized in that in lock housing (1), be equiped with diaphragm (2) from top to bottom successively, lock dog (3), lock (4) and lock ring (5), lock ring (5) connects with screw thread and lock housing (1), a plurality of recessed sphere blind holes (6) are arranged on the upper-end surface of lock (4), in a plurality of recessed sphere blind holes (6), steel ball (7) is housed respectively, on the lower end surface of lock dog (3) with the corresponding position of a plurality of sphere blind holes (6) on, the sphere blind hole (8) that concaves is arranged respectively, and the periphery of diaphragm (2) is clamped between the lower end surface of internal projecting ring (13) of lock (4) upper ring surface (12) and lock housing (1).

2, ball valve locking device according to claim 1 is characterized in that inspecting hole (14) is arranged on the diaphragm (2).