CN2781112Y

CN2781112Y - Ball valve capable of locking

Info

Publication number: CN2781112Y
Application number: CN 200420059179
Authority: CN
Inventors: 朴室相
Original assignee: KUNSHAN TIANXING WATER HEATING
Current assignee: KUNSHAN TIANXING WATER HEATING
Priority date: 2004-06-25
Filing date: 2004-06-25
Publication date: 2006-05-17
Anticipated expiration: 2014-06-25

Abstract

The utility model provides a ball valve capable of locking. The ball valve capable of locking can not be opened easily under a closing state, which prevents damage or accidents happening because of unauthorization or misoperation. The utility model comprises a valve body and an opening-closing handle. The fixed arm of the opening-closing handle is fixed to the valve body through a screw rod and a fixed nut; a movable arm is movably connected with the fixed arm through a hinge, and the movable arm can turn over and buckle above the connecting part of the handle and the valve body; a positioning block which is matched with a positioning hole on the opening-closing handle is arranged on the valve body, and the opening-closing handle movable arm is fixed on the valve body. The utility model is characterized in that locking mechanisms are respectively arranged on the opening-closing handle and/or the valve body, and a locking piece is matched with the locking mechanisms and can open to lock and position the opening-closing handle and the valve body. The utility model locks a rotation handle and the valve body through the locking mechanisms, which prevents the valve opening at will under the closing state; not only can valve opening persons be limited according to requirements, but also various safety accidents caused by the ball valve capable of opening arbitrarily are stopped.

Description

Lockable ball valve

Technical field

The utility model relates to a kind of valve.Specifically be a kind of when ball valve in off position down, the ball valve that can not open easily, thus prevent without permission or misoperation causes damage or accident.

Background technique

Ball valve is installed and used on the pipeline of carrying various fluids or gas usually.The applicant has proposed a kind of ball valve with folding handle in application number is 03141568.9 patent application.This structure valve ball and handle link together, 90 ° of rotary ball valve handles of positive and negative direction, thus make pipeline open or close, and handle is matched with valve body by positioning means, reduce the randomness that ball valve opens and closes.But this ball valve is when closing, and the method by machinery of being still is valve body and handle buckle mutually, as long as anyone is with hand or there are general utility tools such as spanner still can arbitrarily open valve.This is for some high risk industries, may be because people's carelessness, or the valve that uses for family, and sometimes because of children's curiosity, opened the valve that should not open and brought fatal security incident.In addition, in our daily life, when malicious user is not paid time-consuming, because valve can arbitrarily be opened, the way that Gas Company and water utility can't take to die or cut off the water supply is warned malicious user, can only be at one's discretion its continue malice and use, make these companies suffer economic loss.

Summary of the invention

In order to solve an above-mentioned difficult problem, the utility model provides a kind of ball valve, and the ball valve of closing can not arbitrarily be opened.

A kind of ball valve that can be locked of the utility model, comprise valve body and open and close handle, the fixed arm of this handle is fixed on the valve body by screw rod and set screw nut, the movable arm that can turn down the joint top that is fastened on handle and valve body flexibly connects by hinge and fixed arm, establishing a positioning block on the valve body matches with positioning hole on the handle and this handle movable arm is fixed on the valve body, it is characterized in that, locking mechanism is set respectively on described handle and/or the valve body, a latch fitting match with described locking mechanism can open with handle and the locked location of valve body.

The utility model has the advantages that, by locking mechanism that rotatable handle and valve body is locked, prevent that valve from arbitrarily opening under closed state, not only can limit out the valve person as required, and stop to open the various security incidents that cause arbitrarily because of ball valve.

Description of drawings

Figure 1A and Figure 1B are respectively that the utility model first embodiment opens and closes view, and wherein locking mechanism is in side that handle cooperates with ball valve;

Fig. 2 A and Fig. 2 B are respectively that the utility model second embodiment opens and closes view, and wherein locking mechanism is in side that handle cooperates with ball valve;

Fig. 3 A is the utility model the 3rd embodiment's open mode schematic representation;

Fig. 3 B is the open mode schematic representation of the utility model the 3rd embodiment's distressed structure;

Fig. 3 C is Fig. 3 A and Fig. 3 B illustrated embodiment closed condition schematic representation, wherein the end face that cooperates with ball valve at handle of locking mechanism;

Fig. 4 A is the utility model the 4th embodiment's open mode partial structure schematic representation;

Fig. 4 B is the utility model the 4th embodiment's closed condition schematic representation;

Fig. 5 is the closed condition schematic representation of the utility model the 4th embodiment's distressed structure.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in detail:

Embodiment 1

See also shown in Figure 1A, be connected with a handle 2 on the valve body of the utility model ball valve 1, the movable arm of this handle can turn down the joint top that is fastened on handle fixed arm and valve body by hinge 3, nut 4 is screwed on the screw rod 42 that spins of handle 2 and valve body, with be fixed with a positioning block 7 on the valve body of handle screw-on place, the square positioning hole of being opened on this positioning block and the handle movable arm 8 matches.Central authorities at described positioning block 7 have screw 7a.One tapered end 5 comprises lock nut 5a and locking bar 5d, has keyhole 5b among the lock nut 5a, and wherein locking bar 5d can be spirally connected with screw 7a, and keyhole 5b then matches with key 6.Shown in Figure 1B, when throttle down, rotatable handle is fastened on the valve body it, positioning block 7 just in time docks with positioning hole 8, at this moment the locking bar 5d of tapered end 5 is passed positioning hole 8 and be screwed among the screw 7a, key 6 inserts among the keyhole 5b locking bar tightly revolved and is locked among the screw 7a, extracts key 6 then.At this moment except using key 6, be difficult to open this tapered end 5, that is to say that valve can't rotating opening by locked with general tool.

Embodiment 2

Shown in Fig. 2 A and 2B, it is locked that locking structure of the present utility model also can adopt padlock commonly used 9 to carry out.At this moment, positioning block 7 is set to a nose shape structure, the front end of this nose shape structure is provided with a perforation 7b, and positioning hole 8 matches with this positioning block, makes nose shape positioning block protrude out positioning hole, passes perforation 7b with a padlock 9 then, and valve is locked.In the time will opening valve, as long as use the key 6 that is complementary with padlock 9 to open.

Embodiment 3

Shown in Fig. 3 A, 3B and 3C, locking structure of the present utility model can be arranged on also that handle 2 and valve body spin axially on, also promptly behind handle and valve body fastening, locked at the top.As shown in Figure 3A, this structure is achieved in that opens a locking aperture 21 on the movable arm of handle 2, offer screw 41 in the screw rod 43, after handle fastens, the fixture block clamping mutually of positioning hole 8 and positioning block 7 ends, locking bar 5d with tapered end 5 passes this locking aperture 21 then, spins with the screw 41 of screw rod 43, and by key 6 locking bar 5d is tightly revolved and to be locked in the screw 41, shown in Fig. 3 C, when valve after death, extract key 6, just be difficult to open this tapered end 5 with general tool.

Shown in Fig. 3 B, be the distressed structure of Fig. 3 A illustrated embodiment, this structure just changes the outside thread of the locking bar 5d of tapered end 5 into internal thread, and this locking bar 5d is screwed on the outside thread of screw rod 42, thereby can locked valve after handle 2 fastens, shown in Fig. 3 C.Hence one can see that, and the structure of tapered end can have varied.

Embodiment 4

For embodiment's 3 this structures,, then may put in instrument such as the spanner nut 4 of outwarding winding, and then open valve if the fastening space 10 that the sealed back of handle and valve body forms is excessive.For addressing this problem, can adopt the way of dwindling this space.A kind of structure is shown in Fig. 4 A and 4B, and socket one sleeve 11 outside nut 4, the height of this sleeve 11 are lower than the height in the fastening space 10 that forms between handle movable arm turnover back and fixed arm.Like this, after handle 2 fastens, just can't in fastening space 10, insert any instrument, thereby further strengthen the locked effect of valve.

Another kind of structure is in the bending place, first right angle 22 of handle movable arm a step 12 to be set as shown in Figure 5, can dwindle fastening space 10 equally, prevents from wherein to insert instrument.

From foregoing description as can be known, the utility model has the various deformation structure can reach the effect of locked valve, the foregoing description only in order to the explanation but and unrestricted the utility model, all any mapped structures of being done under the utility model aim all should belong to category of the present utility model.

Claims

1, a kind of lockable ball valve, comprise valve body and open and close handle (2), the fixed arm of this handle (2) is fixed on the valve body by screw rod (42) and set screw nut (4), the movable arm that can turn down the joint top that is fastened on handle and valve body flexibly connects by hinge (3) and fixed arm, establishing a positioning block (7) on the valve body matches with positioning hole (8) on the handle and this handle movable arm is fixed on the valve body, it is characterized in that, on described handle (2) and/or the valve body locking mechanism is set respectively, a latch fitting match with described locking mechanism can open with handle and the locked location of valve body.

2, lockable ball valve according to claim 1, it is characterized in that, described locking mechanism is the screw of offering in the positioning block (7) (7a), the key (6) that described latch fitting comprises tapered end (5) and is complementary with it, described tapered end (5) comprises lock nut (5a) and has externally threaded locking bar (5d) that the outside thread of this locking bar (5d) matches with screw (7a).

3, lockable ball valve according to claim 1, it is characterized in that, described locking mechanism is the positioning block (7) of a nose shape structure, this positioning block (7) front end is opened a perforation (7b), described latch fitting comprise a padlock (9) and with the key (6) of its coupling, the lock ring of this padlock matches with perforation (7b).

4. lockable ball valve according to claim 1, it is characterized in that, the locking aperture (21) of locking mechanism on the described handle (2) for being provided with on the movable arm of this handle (2), locking mechanism on the described valve body is the screw (41) of screw rod (42), described latch fitting comprise have locking bar (5d) a tapered end (5) and with the key (6) of its coupling, this locking bar (5d) has outside thread, passes locking aperture (21) and matches with screw (41).

5. lockable ball valve according to claim 1, it is characterized in that, described locking mechanism is a locking aperture (21) of offering on the movable arm of handle (2), described latch fitting comprise a tapered end (5) and with the key (6) of its coupling, the locking bar of this tapered end (5d) has internal thread, can pass locking aperture (21) and match with the outside thread of screw rod (42).

6. according to claim 4 or 5 described lockable ball valves, it is characterized in that the periphery of described nut (4) is socketed with a sleeve (11), the height of this sleeve (11) is lower than the height in the fastening space (10) that forms between handle movable arm turnover back and fixed arm.

7. according to claim 4 or 5 described lockable ball valves, it is characterized in that first kink (22) of described handle movable arm is provided with a step (12).