CN2474851Y

CN2474851Y - Valve lock bonnet

Info

Publication number: CN2474851Y
Application number: CN 01220787
Authority: CN
Inventors: 曲长雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-08
Filing date: 2001-04-08
Publication date: 2002-01-30
Anticipated expiration: 2011-04-08

Abstract

The utility model relates to a valve lock hat comprising a lock hat body and an open buckle sleeve in the lock hat body, the lower end of the buckle sleeve or a convex platform is corresponding to a buckle opening on the inner side of the lock hat, the inner side of the buckle sheath is provided with the convex platform corresponding to the buckle opening on the outer side of the valve body, the buckle sleeve is buckled into the buckle opening with a lock hat body sleeve to lock the valve. The lock hat may be damaged when opening valve. The unlocking tool of the lock hat is provided with two handwheels movably engaged and sleeved and two ring sleeves with the screw thread connected with that of the two handwheels, the two ring sleeves are respectively connected with a hook relative to the lower end of the buckle sleeve and the valve body. The hook is respectively arranged on the lower face of the valve body and the lower face of the buckle sleeve, the buckle sleeve is opened by rotating the handwheels to remove the opened buckle sleeve and the lock hat body together with the opening instrument.

Description

Valve lock bonnet

Valve lock bonnet is a kind of being enclosed within outside the valve, with the part valve body and valve rod covers and with the locked lock nut of valve body, lock nut can also have corresponding opener.

The lock nut of existing valve has the slotted collar in lock cap body, the lock cap body, and snap ring is corresponding with the annular bayonet socket (annular groove) of lock nut inboard.The valve body of valve has the bayonet socket corresponding with snap ring (annular groove), when lock nut is inserted in from the valve rod upper end, is enclosed within outside the valve body.Slotted collar is opened the back along with lock cap body is slided into the bayonet socket place of valve body correspondence, shrinks between the outer bayonet socket of the bayonet socket that is stuck in the lock cap body inboard and valve body, and lock cap body is relative and valve body is locked.But the face of the snap ring clamping of the lock nut of this valve is smaller, also easily snap ring is opened the disengaging bayonet socket with bigger power, and locking is very unreliable.

The purpose of this utility model provides a kind of locking Valve lock bonnet more reliably.

Valve lock bonnet of the present utility model has the opening cutting ferrule in lock cap body, the lock cap body, and it is characterized in that: cutting ferrule lower end or boss are corresponding with the bayonet socket of lock nut inboard, and the cutting ferrule inboard has the corresponding boss of valve body outside bayonet socket with valve.Like this, latch is a cutting ferrule, and the lower end of cutting ferrule or boss block mutually with the bayonet socket of lock nut inboard, cutting ferrule is along with the upper end of lock cap body from valve body is enclosed within outside the valve body, cutting ferrule is squeezed to be opened, and the boss of cutting ferrule inboard moves on to valve body outer corresponding bayonet socket place contraction and snaps in bayonet socket, and lock nut pins valve.Because the cutting ferrule width is bigger, cross section is also bigger, opens cutting ferrule and the boss of cutting ferrule inboard is extruded from the bayonet socket of correspondence, needs tension force very big, and outer power effect lock cap body can not open cutting ferrule, has increased the reliability of locking greatly.Want to open valve, a kind of way is that lock nut is destroyed, and is broken as lock nut is pressed from both sides.

Increase owing to open the tension force of cutting ferrule, the pressure that lock cap body and cutting ferrule are inserted in valve body also increases, particularly when the chamfering of valve body upper end hour, it is very not smooth to be inserted in lock tube.In order successfully lock nut to be enclosed within outside the valve body, the boss hypomere of cutting ferrule inboard is preferably the inclined-plane.When being inserted in lock cap body and cutting ferrule,, being more conducive to open cutting ferrule and slipping over the bayonet socket that the valve body upper end snaps in correspondence by of the effect of valve body upper end with boss hypomere inclined-plane.Equally, lock cap body is inboard to have top end diameter less than cutting ferrule upper-end inner diameter conical surface body with corresponding part, cutting ferrule upper end, press down lock cap body when being inserted in valve body conical surface body help to open cutting ferrule, help lock nut and successfully be enclosed within the outer locking of valve body.For the ease of the processing and the installation of cutting ferrule, the cutting ferrule lower end corresponding with lock cap body interior annular bayonet socket is the back-up ring that docks with the cutting ferrule lower end, and the back-up ring outside has constituted cutting ferrule and the corresponding boss of the inboard bayonet socket of lock cap body.The another kind of way that can use lock nut repeatedly and open the valve of locking is, lock nut is furnished with the special opening instrument, two ring sets that the opener of the utility model valve body lock nut is threaded with two handwheels respectively by two handwheels that are nested movingly, screw thread, two ring sets are connected with respectively and the corresponding hook of valve body and cutting ferrule lower end.Seat below the handwheel that is nested is placed on above the lock nut, two groups of hooks are respectively below the valve body of locking and corresponding below the cutting ferrule in the lock nut, rotating handwheel hooks hook valve body and cutting ferrule and further rotates handwheel, by conical surface body corresponding in the lock cap body cutting ferrule is opened with the cutting ferrule upper end, and use hook corresponding below cutting ferrule that open cutting ferrule is fixed, the corresponding handwheel of Operating valve body hook of reversing then unclamps this hook, just open cutting ferrule and lock cap body connection opener together can be removed valve body, open the valve of locking.Ring set can adopt multiple existing Placement with being connected of hook, as rivet, weld, articulate, hinge joint etc.In order to reduce the stroke of ring set and hook, ring set preferably adopts hinge joint with being connected of hook.The hinge joint of ring set and hook can make that hook is relative outwards to be opened with ring set, is convenient to be put into lock nut.In order to make structure compact more, adopted two ring set posts to overlap mutually, and the ring set outer rim have circular groove or T-slot, the arc bayonet socket or the T shape bayonet socket of hook upper end snap in circular groove or T-slot, and the outside of the outer ring set of two ring sets that are nested also is with lock tube.Like this, outer ring set can retrain hook that the inner ring sleeve bayonet socket snaps in and can not at will open and lift, and lock tube can retrain hook that outer ring set bayonet socket snaps in and can not at will open and lift.

Of the present utility model thus and existing technology is compared, and it is more reliable to have a Locking valve, and locking is convenient smoothly; Can adopt and destroy lock nut and Open valve, can also use the opener of cooperation to open, Valve lock bonnet can be used repeatedly.

Accompanying drawing has been represented the schematic representation of a kind of structure heating Valve lock bonnet of the utility model and opener, and wherein Fig. 1 is this heating Valve lock bonnet half sectional view, and the opener half sectional view of Fig. 2 for being equipped with, Fig. 3 are the inside and outside ring set side of opener partial view.Example below in conjunction with accompanying drawing further specifies the utility model.

This structure heating Valve lock bonnet has the opening cutting ferrule 2 in lock cap body 1, the lock cap body.The cutting ferrule lower end has the back-up ring 3 that connects, as the cutting ferrule boss corresponding with the bayonet socket of lock nut inboard.The back-up ring outer rim snaps in bottom annular groove bayonet socket in the lock cap body.The cutting ferrule inboard also has the corresponding boss of valve body outside bayonet socket with valve, and the annular boss hypomere of cutting ferrule inboard is the inclined-plane.Lock cap body is inboard to have the circular cone body with corresponding part, cutting ferrule upper end, and the top end diameter of circular cone body is less than the cutting ferrule upper-end inner diameter.Cutting ferrule and back-up ring are along with the upper end of lock cap body from valve body is enclosed within outside the valve body, and the valve body upper end contacts with the annular boss hypomere inclined-plane of cutting ferrule to squeeze opens, and cooperate the conical surface body in the lock cap body 1 that squeezing of cutting ferrule upper end opened simultaneously, and cutting ferrule is squeezed to be opened.The boss of cutting ferrule inboard moves on to the outer corresponding annular groove bayonet socket place of valve body along with moving down slip, snaps in bayonet socket and shrink, and lock nut pins valve top.

When opening valve, lock nut can be pressed from both sides broken.The opener that also can use this Valve lock bonnet spy to be furnished with, the opener of this valve body lock nut be by its 9,10 last handwheel 12 that is nested movingly and following handwheel 11, respectively inner ring sleeve 7 and the outer ring set 4 that is threaded with hand wheel shaft 9,10 up and down.Inner ring sleeve is connected with the hook corresponding with the cutting ferrule lower end 72.The outer shroud cover is connected with the hook corresponding with valve body 42.Inside and outside ring set outer rim all has circular groove, and annular groove has breach below the two symmetry places, has formed the T-slot that is communicated with in the both sides of symmetry.Overlap two groups of hooks that are connected with inside and outside ring respectively, every group is the hook of two symmetries.The T shape bayonet socket shape of one group of hook 72 upper end less than but similar in appearance to the T-slot of inner ring sleeve, snap in the T-slot of inner ring sleeve two symmetrical sides respectively, be connected inner ring sleeve.The T shape bayonet socket shape of another group hook 42 upper ends less than but similar in appearance to the T-slot of outer ring set, snap in the T-slot of outer groove two symmetries respectively, form and being connected of outer ring set.The outer ring set overcoat lock tube 6 that can slide up and down.In two groups of hooks, hook 42,72 inboards of every group of symmetry all have open spring ring 5,13 respectively.Lift lock tube, two groups of hooks are opened and are lifted.Seat below the handwheel that is nested is placed on above the lock nut, and the decline lock tube draws two groups of hooks in and merges, and makes two groups of hooks respectively below the valve body of locking and corresponding below the cutting ferrule in the lock nut.Rotate handwheel hook is hooked valve body and cutting ferrule, and further rotate handwheel 11 down, cutting ferrule is opened, and the last handwheel 12 of rotation, use the hook corresponding 72 that open cutting ferrule is fixed with back-up ring below the cutting ferrule by conical surface body corresponding in the lock cap body with the cutting ferrule upper end.Then, the last handwheel of the correspondence of counter-rotating Operating valve body hook 42 unclamps this hook 42, lifts lock tube hook 42 is lifted to both sides, just open cutting ferrule and lock cap body connection opener together can be removed valve body, opens the valve of locking.

Claims

1, a kind of Valve lock bonnet has the opening cutting ferrule in lock cap body, the lock cap body, and it is characterized in that: cutting ferrule lower end or boss are corresponding with the bayonet socket of lock nut inboard, and the cutting ferrule inboard has the corresponding boss of valve body outside bayonet socket with valve.

2, as the said Valve lock bonnet of claim 1, it is characterized in that: the boss hypomere of cutting ferrule inboard is the inclined-plane.

3, as claim 1 or 2 said Valve lock bonnets, it is characterized in that: lock cap body is inboard to have the conical surface body of top end diameter less than the cutting ferrule upper-end inner diameter with corresponding part, cutting ferrule upper end.

4, as the said Valve lock bonnet of claim 3, it is characterized in that: the back-up ring of the cutting ferrule lower end corresponding for docking with the cutting ferrule lower end with lock nut interior annular bayonet socket.

5, as the said Valve lock bonnet of claim 4, it is characterized in that: lock cap body is furnished with opener, two ring sets that opener is threaded with two handwheels respectively by two handwheels that are nested movingly, screw thread, two ring sets are connected with respectively and the corresponding hook of valve body and cutting ferrule lower end.

6, as the said Valve lock bonnet of claim 5, it is characterized in that: two ring sets are nested, and the ring set outer rim has circular groove or T-slot, and the arc bayonet socket or the T shape bayonet socket of hook upper end snap in circular groove or T-slot, and outer ring set overcoat has lock tube.