CN2411393Y

CN2411393Y - Lockable sluice valve

Info

Publication number: CN2411393Y
Application number: CN 99230504
Authority: CN
Inventors: 汤伟; 顾新华; 方明亮; 张兰芬; 蒋国新; 陈国栋; 王庆芬; 王宗铭
Original assignee: Nanjing Water Supply General Corp; JIANGSU PROVINCE ZUZEM MACHINERY FACTORY
Current assignee: Nanjing Water Supply General Corp; JIANGSU PROVINCE ZUZEM MACHINERY FACTORY
Priority date: 1999-12-23
Filing date: 1999-12-23
Publication date: 2000-12-20
Anticipated expiration: 2009-12-23

Abstract

The utility model relates to a lockable gate valve. A valve cover is arranged above a passage at the middle of a valve body; a valve rod and a valve gate are arranged in a chamber formed by the communication of the valve cover and the valve body; a step is arranged on the wall of the chamber of the valve cover; a sealing ring sheathed on the valve rod and a press cap of which the upper end surface is provided with a radial slot are arranged above the step of the valve cover; the press cap is connected with the valve cover through screw threads; clearance in which a special tool can be inserted is arranged between the valve rod part above the press cap and the wall of the chamber of the valve cover; a protective cover is arranged at the end of the valve cover. Because the utility model can only be opened or closed by a special tool, the utility model is a lockable valve, and can prevent people form freely opening and closing; the protective cover can be closed when necessary; the utility model is good for managing liquid transport pipelines of tap water and other liquid.

Description

But stop valve

The utility model relates to a kind of gate valve.

All valve must be installed on any pipeline, the kind of valve is a lot, the gate valve structure that is arranged on the intake pipe of water meter is simpler, it has valve body, valve rod, the valve lock, valve rod stretches out outside the valve body, on the valve rod external part handle is housed, handle with sleeve just can open or close gate valve, and operation is very convenient, but when needs carry out mandatory administration to pipeline, closing gate valve for example, and inaccurate open gate valve without authorization, use above-mentioned can not lock construction gate valve then difficulty meet the demands, because of handle with sleeve is easy to, remove handle exactly, adopt general utility tool also to be easy to open or close gate valve.

But the purpose of this utility model is to propose the stop valve that a kind of need just can open or close with special tool.

The technical measures that the utility model is taked are that to have three way valve and valve lock and valve rod at common gate valve be on the basis of screw pair; take above the valve body center-aisle, to be provided with valve gap; valve rod and valve lock are arranged in valve gap and the chamber that valve body is communicated with; has step on the valve cover cavity wall; the step top is provided with and is nested with the pressure cap that has radial groove on seal ring on the valve rod and upper-end surface; pressure cap and valve gap scyewed joint; have the gap that allows special tool to insert between the valve stem part of pressure cap top and the valve cover cavity wall, the valve gap termination is provided with protective cover.

The above-mentioned seal ring and the surface of contact of pressure cap are downward-sloping from the inside to the outside.

Between valve gap and valve body, be provided with gasket seal in addition.

Fig. 1 is the utility model configuration diagram;

Fig. 2～Fig. 3 is the sectional view at installation special tool position, valve rod top;

Fig. 4 is the special tool diagrammatic sketch of unlatching or closing gate valve.

Below in conjunction with accompanying drawing the utility model is further described.

Embodiment illustrated in fig. 1 have three way valve 1, valve lock 2, a valve rod 3,1 liang of side canal 1-1 of three way valve is a water channel, the center-aisle top is provided with valve gap 5, valve gap 5 has cavity, valve gap 5 is fixedlyed connected with valve body 1 screw thread, for guaranteeing sealing, between valve gap 5 and valve body 1, be provided with gasket seal 4, have step 5-1 on the valve gap 5 chamber walls; Valve rod 3 and valve lock 2 are arranged in valve gap 5 and the chamber that valve body 1 is communicated with, valve rod 3 and valve lock 2 are screw pair, screw pair can be changed into straight line motion rotatablely moving, present embodiment is taked at valve rod 3 bottom outer gearing valve locks 2, valve rod bulge loop 3-1 places valve gap step 5-1 and is embedded between the interior positioning ring 6 of valve gap annular groove, valve gap 5 chamber wall step 5-1 and positioning ring 6 restriction valve rods move up and down, rotary valve rod 3, valve lock 2 moves up and down, the shape of valve pocket floor portion and valve body bottom is coincide, when valve pocket floor portion touches valve body bottom, closedown of pipeline; Valve gap 5 chamber wall step 5-1 top is provided with the seal ring 7 that is nested with on valve rod 3, seal ring 7 tops are provided with the pressure cap 8 that has radial groove 8-1 on the upper-end surface, 8 pairs of seal rings of pressure cap 7 fixing, regulating actions, pressure cap 8 is the inclined-plane with the surface of contact of seal ring 7, this inclined-plane is downward-sloping from the inside to the outside, the pressure cap power that puts on seal ring has the component towards the valve rod direction like this, and pressure cap can play regulating action, pressure cap 8 and valve gap 5 scyewed joint; The valve stem part of pressure cap top is to have the gap 3-2 that allows special tool 10 to insert between valve rod top and the valve gap 5 chamber walls, the shape on valve rod 3 tops guarantees that the special tool prodigiosin drives its reliable rotation, and Fig. 2 and Fig. 3 are the sectional shape diagrammatic sketch at installation special tool position for valve rod 3 tops; Valve gap 5 terminations are provided with protective cover 9.

Special tool 10, one ends 11 that Figure 4 shows that unlatching or closing gate valve are provided with shape and the consistent hole of valve rod 3 shaped upper parts, are used for rotary valve rod, and the other end 12 is a fork-shaped, can insert in the radial groove 8-1 of pressure cap 8, is used to rotate pressure cap, and the middle part is provided with handle 13.

The utility model is a kind of valve of locking owing to need special tool just can open or close, and can prevent the random switch of people, can cover by close and protect in case of necessity, helps the management to tap water.The utility model can also be applied to other liquid or gas transmission pipeline.

Claims

1; but a kind of stop valve; has three way valve (1); valve lock (2); valve rod (3); wherein valve lock (2) and valve rod (3) are screw pair; it is characterized in that: valve body (1) center-aisle top is provided with valve gap (5); valve rod (3) and valve lock (2) are arranged in valve gap (5) and the chamber that valve body (1) is communicated with; has step (5-1) on the valve cover cavity wall; step (5-1) top is provided with and is nested with the pressure cap (8) that has radial groove (8-1) on seal ring (7) on the valve rod (3) and upper-end surface; pressure cap (8) and valve gap (5) scyewed joint; have the gap (3-2) that allows special tool to insert between the valve stem part of pressure cap top and valve gap (5) the chamber wall, valve gap (5) termination is provided with protective cover (9).

But 2, stop valve according to claim 1 is characterized in that: seal ring (7) is downward-sloping from the inside to the outside with the surface of contact of pressure cap (8).

But 3, stop valve according to claim 2 is characterized in that: be provided with gasket seal (4) between valve gap (5) and valve body (1).