CN2558822Y

CN2558822Y - Control valve

Info

Publication number: CN2558822Y
Application number: CN 02217890
Authority: CN
Inventors: 李林长
Original assignee: DELI VALVE PLANT YUHUAN COUNTY
Current assignee: DELI VALVE PLANT YUHUAN COUNTY
Priority date: 2002-05-30
Filing date: 2002-05-30
Publication date: 2003-07-02
Anticipated expiration: 2012-05-30

Abstract

The utility model provides a control valve pertaining to a valve technology filed, in particular to a valve with locking device. The control valve comprises a valve body, a valve core and a valve bar inside the valve body. An upper part of the valve body is provided with a cylinder shape recessed cavity, and an external end of the valve bar is inside the recessed cavity; besides, a ring type groove is arranged at an internal side face of an edge of the recessed cavity, a disk-shaped enclosing cover is arranged at the edge of the recessed cavity, and the outer diameter of the enclosing cover is slightly smaller than the inner diameter of the edge of the recessed cavity; a ring type groove is also arranged at the edge of the enclosing cover, and a clip spring is arranged inside the ring type groove of the edge of the recessed cavity and the ring type groove of the enclosing cover edge. Furthermore, the control valve is provided with a turn-on knob, on which a concave hole matched with the shape of an external end of the valve bar is arranged. The utility model utilizes the clip spring at the enclosing cover to fix the enclosing cover at the edge of the recessed cavity, which can effectively prevent others to turn on illegally. The utility model has simple structure, low producing cost and relatively high practical value.

Description

Control valve

Technical field

The utility model belongs to valve technology field, particularly a kind of valve that has locking device.

Background technique

After valve was installed on the pipeline, people normally can arbitrarily open or close.But, for heating installation company, water utility or Gas Company,, therefore valve is necessary to control because the user needs charge in use.That is to say, when the user is in arrears with expense, valve closing can be prevented that it from continuing to use.Obviously, this need be provided with a locking device on valve, illegally opens to prevent other people.The valve of locking device like this, has just appearred much having.

For existing Lock controlled valve, divide from the structure of product, one class is to utilize lock body that the valve rod in the valve is locked, come the keying of control valve, another kind of is that the lock core in the lock body is directly connected with the valve rod of valve, valve handle is not set, utilizes key to substitute handle and insert lock core drive spool switching valve.But, no matter be to adopt that a kind of mode, its structure is all complicated, has increased the cost of product greatly.

On the other hand, if divide from the working principle of product, a class is to utilize the principle of machinery to come control valve, as using mechanical cylinder lock; Another kind of is the principle of utilizing magnetic, as using magnet or magnetic card etc.Although adopt the valve of mechanical billiard lock control to have the advantage that anti-theft is good, be difficult for unlatching, also exist administrative staff and carry key and use inconvenient deficiency; And for back one class Lock controlled valve, its anti-theft is bad, is opened by the user easily and loses the meaning of lock control.

Summary of the invention

The purpose of this utility model is in order to overcome the existing all deficiencys of present Lock controlled valve, provide a kind of simple in structure, product cost is low, the anti-strong control valve of unlatching ability.

For achieving the above object, the utility model has adopted following technical proposal: this control valve comprises valve body, spool and valve rod in the valve body, the inner of valve rod connects with spool, valve body is stretched out in the outer end, a columnar cavity is arranged at the top of valve body, the outer end of valve rod is positioned at this cavity, have an annular groove on the inner side surface at cavity bead place, the bead of cavity is provided with a discoidal capping, the external diameter of capping is slightly less than the internal diameter of cavity bead, the edge of capping also has an annular groove, a jump ring is arranged in the annular groove of cavity bead and the annular groove at capping edge, this control valve also is furnished with one and opens handle, and opening on the handle has the shrinkage pool that is complementary with valve rod outer end shape.

The utility model is to utilize the jump ring of capping place that the bead place of cavity is fixed in capping, thereby prevents other people Open valve.Open this control valve if desired, capping must be destroyed, re-use special-purpose unlatching handle, open or throttle down.When needing to control this valve again, can use a new capping.

In above-mentioned control valve, the inner side surface of capping is provided with recess.Reduce capping thickness by recess, so that capping is knocked open when valve operated.

In addition, also can establish several breach in the bottom at capping edge, also be same effect.

In above-mentioned control valve, the center of cavity is provided with a step, makes the internal diameter of the internal diameter of cavity bottom less than cavity top.By such structure, when capping is knocked open, help breaking of capping.

Compare with existing Lock controlled valve, the control valve that the utility model provides has following advantage:

1, owing to used capping to seal the bead of cavity, must destroy capping when valve is operated, so other people just is easy to be found, thereby plays the purpose that prevents that other people from opening if any illegal unlatching behavior.

2, this control valve is only set up a cavity and capping on valve body, and it is simple in structure, the cost of product is low, has higher utility.

Description of drawings

Fig. 1 is the sectional view of the control valve that provides of the utility model.

Fig. 2 is the outline drawing of capping in the control valve that provides of the utility model.

Fig. 3 is the handle schematic representation of the control valve that provides of the utility model.

Fig. 4 is the schematic representation of control valve when opening with handle that the utility model provides.

Among the figure, 1, valve body; 2, spool; 3, valve rod; 4, seal ring; 5, cavity; 6, capping; 60, recess; 7, jump ring; 8, annular groove; 9, step; 10, breach; 11, handle; 12, shrinkage pool.

Embodiment

As shown in Figure 1, control valve is a ball valve in the present embodiment, and it comprises valve body 1, spool 2 and valve rod 3.The top of valve body 1 is a columnar cavity 5, and the inner of valve rod 3 connects with spool 2, and the outer end is positioned at this cavity 5.Also be provided with an O RunddichtringO 4 between valve rod 3 and the valve body 1, play seal action.

Capping 6 is positioned at the bead place of cavity 5.The profile of capping 6 as shown in Figure 2, capping 6 is a disc, there is an annular groove 8 at its edge, inner side surface is a recess 60.In addition, be provided with four breach 10 in the bottom at capping edge.Recess 60 and breach 10 are set in capping 6 all help capping 6 is destroyed, just valve open.

As shown in Figure 1, have an annular groove 8 at the bead place of valve body 1 top cavity 5.Be provided with a jump ring 7 in this annular groove 8.The external diameter of capping 6 is slightly less than the internal diameter of cavity 5, therefore capping 6 can be included in the cavity 5.When the position of annular groove 8 positions at capping 6 edges and cavity 5 place's annular grooves 8 over against the time, jump ring 7 will snap in the annular groove 8 of capping 6, and capping 6 is fixed in the cavity 5.At this moment, under the situation that keeps valve body 1 not to be damaged, except capping 6 is destroyed, adopt other instrument or mode all complete capping 6 can't be taken out.

As shown in Figure 1, the center of cavity 5 is provided with a step 9, and this step 9 is in order to prevent that capping 6 is absorbed in cavity 5 bottoms, and helps breaking of capping 6.

As shown in Figure 3, the profile of handle 11 is close with common ball valve handle profile.But a shrinkage pool 12 is arranged on handle 11.In the present embodiment, the outer end of valve rod 3 is shaped as square, the square shrinkage pool 12 that is complementary is therewith also arranged on the handle 11, and the size of shrinkage pool 12 is slightly larger than the outer end of valve rod 3.

As shown in Figure 4, after capping 6 was destroyed fully, the outer end of valve rod 3 just can snap in the shrinkage pool 12 of handle 11.At this moment, as long as pull handle 11, just can make valve opening or close.

Claims

1, a kind of control valve, comprise valve body (1), spool (2) and valve rod (3) in the valve body (1), the inner of valve rod (3) connects with spool (2), valve body (1) is stretched out in the outer end, a columnar cavity (5) is arranged at the top that it is characterized in that described valve body (1), the outer end of valve rod (3) is positioned at this cavity (5), have an annular groove (8) on the inner side surface at cavity (5) bead place, the bead of cavity (5) is provided with a discoidal capping (6), the external diameter of capping (6) is slightly less than the internal diameter of cavity (5) bead, the edge of capping (6) also has an annular groove (8), a jump ring (7) is arranged in the annular groove (8) of cavity (5) bead and the annular groove (8) at capping (6) edge, this control valve also is furnished with one and opens handle (11), and opening has the shrinkage pool (12) that is complementary with valve rod (3) outer end shape on the handle (11).

2, control valve according to claim 1 is characterized in that the inner side surface of described capping (6) is provided with recess (60).

3, control valve according to claim 2 is characterized in that establishing several breach (10) in the bottom at capping (6) edge.

4, according to claim 1,2 or 3 described control valves, it is characterized in that the center of described cavity (5) is provided with a step (9), make the internal diameter of the internal diameter of cavity (5) bottom less than cavity (5) top.

5, according to claim 1,2 or 3 described control valves, the outer end that it is characterized in that described valve rod (3) is shaped as square, the square shrinkage pool (12) that is complementary is therewith also arranged on the handle (11), and the size of shrinkage pool (12) is slightly larger than the outer end of valve rod (3).