CN2549271Y - Leakproof valve - Google Patents

Abstract

The utility model relates to a leak-proof value belonging to the field of value in the pipeline of conveying liquid, which comprises a value with an inlet channel and an outlet channel, a value rod, a handle, a gland and a seal ring; wherein, the value rod is inserted into the value. The utility model is characterized in that the handle is connected with the value cover through a screw; the handle is connected with the value rod through a clamp spring with sliding matching; the joint between the value cover and the value is provided with a seal ring; the inner side of the value cover is provided with a groove; the O-shaped seal ring is arranged in the groove of the value cover and the value rod center; the value core at the value rod bottom is processed as reverse-umbrella shape; a water gate of the value body bottom is provided with a rabbet seal ring; and the reverse-umbrella shape value rod is contacted with the rabbet seal ring in complete uplift. The utility model has the advantages that as the value rod slides vertically in opening or closing, the friction and resistance with the sealing materials are reduced; when the value is in closing state and the value rod is uplifted completely, the pressure in the interval channel presses the seal ring of the water gate and the circular face of the reverse-umbrella shape value rod, with better sealing effect by larger water pressure and long service life.

Description

A kind of Leakless valve

Technical field

The utility model relates to the valve field in the pipeline of carrying liquid.

Background technique

Will use the valve of a large amount of various sizes in carrying the pipeline of liquid, existing valve exists mostly that medium lets out and screw thread contacts with medium and is subjected to etching problem from spool.Rotation owing to valve rubs the seal point of valve rod and valve body in addition, produces problems such as rotation friction with sealing material.Existing in addition valve body is generally chosen and is used metallic material manufacturing, stuffing box packing and screw thread to be prone to phenomenons such as the sliding embroidery of wearing and tearing erosion.

Summary of the invention

The purpose of this utility model is the shortcomings and deficiencies that overcome conventional valves, provides a kind of simple in structure, good seal performance, and various sealing part abrasions are little, the Leakless valve of long service life.The utility model is to realize like this, include the valve body of an import water channel and a water outlet passage, valve rod, handle, gland and seal ring etc., valve rod inserts in the valve body, it is characterized in that handle and valve gap are by being threaded, handle is connected by jump ring with valve rod, and be slidingly matched, be provided with seal ring at valve gap and valve body threaded connection place, have a groove in the inboard of valve gap, in the groove of the valve gap that the O RunddichtringO is established and between the valve rod middle part, the spool of stem lower portion is processed into " umbrella shape ", sluice gate place in valve body lower portion is provided with the seam seal ring, and " umbrella shape " is face with the seam seal ring when valve rod lifts fully and contacts.

The utility model has the advantages that: owing to adopted said structure, valve rod vertically slides when opening or closing, reduced friction with sealing material, when valve is in the closed condition valve rod and lifts fully, pressure in the runner makes the sluice gate seal ring and falls umbrella shape " disc of valve rod compresses, and hydraulic pressure is big more, and sealing effect is good more; opening and closing are more laborsaving, long service life.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model.

Accompanying drawing 2 is the structural representation of the utility model valve rod.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model includes the valve body 7 of a water inlet passageway and a water outlet passage, valve rod 4, handle 2, gland 3 and seal ring etc., valve rod 4 inserts in the valve body 7, it is characterized in that handle 2 and valve gap 3 are by being threaded, handle 2 is connected by jump ring 1 with valve rod 4, and be slidingly matched, be provided with seal ring 5 in valve gap 3 and valve body 7 threaded connection places, its seal ring generally adopts rubber ring, have a groove in the inboard of valve gap 3, in the groove of the valve gap 3 that O RunddichtringO 6 is established and between valve rod 4 middle parts, its O RunddichtringO is with on the valve rod, the lower end sealing of being separated by.The effect of jump ring 1 is the fixing moving direction of valve rod, can only move up and down, and can not rotate, thereby significantly reduce valve rod and Sealing friction.The spool 9 of valve rod of the present utility model 4 bottoms is processed into " umbrella shape ", is provided with seam seal ring 8 at the sluice gate place of valve body 7 bottoms, and " umbrella shape " is face with seam seal ring 8 when valve rod lifts fully and contacts.When valve is in when closing, the pressure in the runner compresses sluice gate seal ring 8 and the disc of " fall umbrella shape " valve rod, and hydraulic pressure is big more, and sealing effect is good more, and valve can never leak, and has prolonged the working life of valve effectively.When using the utility model, as long as this valve is installed on the pipeline, turn lifting handle, the drive valve rod slides up and down in valve body and can open or throttle down.

Claims (1)

1, a kind of Leakless valve, include the valve body of a water inlet passageway and a water outlet passage, valve rod, handle, gland and seal ring etc., valve rod (4) inserts in the valve body (7), it is characterized in that handle (2) and valve gap (3) are by being threaded, handle (2) is connected by jump ring (1) with valve (4), and be slidingly matched, be provided with seal ring (5) in valve gap (3) and valve body (7) threaded connection place, inboard at valve gap (3) has a groove, in the groove of the valve gap (3) that O RunddichtringO (6) is established and between valve rod (4) middle part, the spool (9) of valve rod (4) bottom is processed into " umbrella shape ", sluice gate place in valve body (7) bottom is provided with seam seal ring (8), and " umbrella shape " is face with seam seal ring (8) when valve rod lifts fully and contacts.

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