CN2385163Y - Chamber-free pipeline stop valve - Google Patents

Abstract

The utility model comprises a valve body, a valve core, a sealing ring, a fixing nut and a return spring, wherein the valve body is a cylindrical body of which the upper section has an external screw and the lower section is a hexagonal body, and an inner hole is two perforated step holes. The valve core is provided with an inner hole which is not perforated, and the lower end of the valve core is provided with a flange convex edge. The upper end face of the valve core is provided with fixing screws for the sealing ring. The lower end of the inner hole is provided with an opening, and the valve core corresponding to the upper end of the inner hole is provided with a circle of side holes. The valve core is arranged in the inner hole of the valve body, and the return spring is arranged between the flange convex edge of the valve core and the upper end face of the inner hole at the lower section of the valve body. The sealing ring is arranged on the fixing screws and impacted by the fixing nut. The utility model is used in a liquid flow pipe, and has the advantages of simple structure and low cost.

Description

No lumen road stop valve

The utility model belongs to the pipeline valve technical field.

On the position before being positioned at valve on the pipeline, stop valve is housed, when needing the repair and replacement valve whole pipe is closed in order to the valve damage.The prior art stop valve, its structure and valve mechanism are basic identical, and volume is bigger, and cost is higher, damages easily.

The purpose of this utility model is to provide the no lumen road that a kind of volume is little, not fragile, cost is low stop valve.

The purpose of this utility model is achieved in that a kind of no lumen road stop valve, comprises valve body, spool, seal ring, hold-doun nut and returning spring.Valve body is substantially cylindrical body, its outside epimere is the external thread section that can combine with the pipe hole internal thread, hypomere is for being inserted in the hexagonal body of spanner, its endoporus is the circular hole that two rank connect, the epimere internal diameter is less, the hypomere internal diameter is bigger, and the internal thread that can pack into water valve is arranged in the lower end of hypomere endoporus.Spool is the cylindrical body that does not connect endoporus that has that external diameter is slightly less than valve body epimere endoporus internal diameter, there is an external diameter spool lower end greater than spool cylindrical body external diameter but be slightly less than the flange plate convex edge of valve body hypomere endoporus internal diameter, the obstructed liquid-through hole in one lower ending opening upper end is arranged in the spool, with the corresponding spool of liquid-through hole upper end position on have one the circle in be interlinked to the outside for liquid the circulation side opening, there is the seal ring set screw that can adorn seal ring and combine with hold-doun nut in spool upper-end surface central authorities.Spool is packed in the valve body inner bore, can be freely movable up and down in the epimere endoporus.Returning spring is inserted in spool hypomere outer surface and is contained between the upper-end surface of upper-end surface, convex edge, spool lower end and valve body hypomere endoporus.External diameter is contained on the seal ring set screw of spool greater than the seal ring of valve body epimere endoporus internal diameter, and is fixing tight with hold-doun nut, covers valve body inner bore.After installing, returning spring is in compressive state, and its elastic force is pressed on seal ring on the valve body epimere endoporus by spool and hold-doun nut.

Stop valve is packed into the outside thread of its epimere outside in the connecting part internal thread of pipeline.When not packing the water valve into, seal ring ends liquid stream being pressed under the back stretch effect on the valve body epimere endoporus.After packing into water valve, be screwed in the internal thread of valve body hypomere endoporus with the connecting part outside thread of water valve, push on the spool and move, make seal ring with on move, open valve body epimere endoporus, liquid is promptly negotiable.

The utility model has the advantages that 5 members are only arranged, than general valve member much less, simple in structure, in light weight, volume is little, low cost of manufacture, and easy break-down not, long service life, easy to maintenance.And have simultaneously and end and two kinds of functions of valve, be applicable to places uses such as enterprise and public place are for example irrigated, flushing, fire-fighting.

Fig. 1 is a structural drawing of the present utility model.Fig. 1 is described as follows: 1 is valve body, and 2 is spool, and 3 is seal ring, and 4 is hold-doun nut, and 5 is returning spring, and 6 is the hexagonal body, and 7 is the flange plate convex edge, and 8 is liquid-through hole, and 9 is side opening, and 10 is the seal ring set screw.

An embodiment of the present utility model 1 is described below in conjunction with the accompanying drawings: valve body 1 outside epimere is an external thread section, and hypomere is a hexagonal body 6; The two rank circular holes of endoporus for connecting, the epimere internal diameter is less, and the hypomere internal diameter is bigger, and there is internal thread the lower end of endoporus hypomere.Spool 2 outsides are slightly less than the cylindrical body of valve body 1 endoporus epimere for external diameter, there is external diameter its lower end greater than spool 2 cylindrical body external diameters but be slightly less than the flange plate convex edge 7 of the internal diameter of valve body 1 endoporus hypomere, the obstructed liquid-through hole 8 in one lower ending opening upper end is arranged in the spool 2, with liquid-through hole 8 on the side opening 9 of circulation for liquid that is interlinked to the outside in the circle is arranged on the corresponding spool 2 of fragment position, there is a seal ring set screw 10 in spool 2 upper-end surface central authorities.Spool 2 is sleeved in valve body 1 endoporus, can be freely movable up and down in valve body 1 endoporus epimere.Returning spring 5 is enclosed within on the outer surface of spool 2 cylindrical body hypomeres, is contained between the upper-end surface of the upper-end surface of flange plate convex edge 7 of spool 2 lower ends and valve body 1 hypomere endoporus, is in compressive state after installing.External diameter is contained on the seal ring set screw 10 on spool 2 upper-end surfaces greater than the seal ring 3 of valve body 1 endoporus internal diameter, and is fixing tight with hold-doun nut 4, covers valve body 1 endoporus.

Claims (1)

1. A kind of no lumen road stop valve is characterized in that comprising valve body (1), spool (2), seal ring (3), hold-doun nut (4) and returning spring (5); Valve body (1) is roughly cylindrical body, and its outside epimere is the external thread section that can combine with internal thread in the pipe hole, and hypomere is hexagonal body (6), its endoporus is the circular hole that two rank connect, the epimere internal diameter is less, and the hypomere internal diameter is bigger, and having in the lower end of hypomere endoporus can be for the internal thread of packing into water valve; Spool (2) is slightly less than the cylindrical body that does not connect endoporus that has of valve body (1) endoporus epimere internal diameter for external diameter, there is an external diameter lower end of spool (2) greater than spool (2) cylindrical body external diameter but be slightly less than the flange plate convex edge (7) of valve body (1) endoporus hypomere internal diameter, the obstructed liquid-through hole (8) in one lower ending opening upper end is arranged in the spool (2), with the corresponding spool of liquid-through hole (8) upper end position (2) on have the side opening (9) of the circulation that is interlinked to the outside for liquid in the circle, the central authorities of spool (2) upper-end surface that the one seal ring set screw (10) that can adorn seal ring is arranged; Spool (2) cover is packed in valve body (1) endoporus; Returning spring (5) is enclosed within on spool (2) the cylindrical body hypomere outer surface, is contained between the upper-end surface of the upper-end surface of flange plate convex edge, spool (2) lower end (7) and valve body (1) hypomere endoporus; External diameter is contained on the seal ring set screw (10) of spool (2) greater than the seal ring (3) of valve body (1) epimere endoporus internal diameter, and is fixing tight with hold-doun nut (4).