CN2386272Y

CN2386272Y - Elastic sluice valve

Info

Publication number: CN2386272Y
Application number: CN 99243075
Authority: CN
Inventors: 王乐春
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-10
Filing date: 1999-09-10
Publication date: 2000-07-05
Anticipated expiration: 2009-09-10

Abstract

The utility model relates to an elastic valve, which belongs to sluice valve manufacturing and is used for cutting pipelines. The utility model comprises a valve body, a valve plate, a valve body guide slot, a valve rod, conventional filling materials, a filling material press cover, a valve cover, etc. The utility model is characterized in that an elastic sealing piece is arranged on the valve plate; a ring-shaped hollow convex edge is arranged on the elastic sealing piece; an elastic sealing device is arranged between the valve rod and the valve cover; the conventional filling materials are arranged on the elastic sealing device; the filling material press cover is connected with the valve cover. The utility model has the advantages of little resistance of liquid, little start and stop force, tight closure, strong sealing property, temperature resistance, pressure resistance, and abrasion resistance.

Description

The novel elastic gate valve

The utility model relates to a kind of elasticity gate valve, is used for the cut-out of pipeline, belongs to the valve manufacturing industry.

At present, the valve kind of selling on the market is a lot, and wherein gate valve is used very wide.Country's disclosed various gate valve patents (Z41Y-16I, Z81H-25, Z441Y-64I etc.), form by valve body, valve plate, valve gap, valve rod, handwheel etc., all adopt hard sealing, the sealing surface of this class valve between valve plate and valve body, because adding the Seiko degree does not reach requirement, yielding under the high temperature, easily scratch causes poorly sealed, leaking medium, in addition, owing to expand with heat and contract with cold, it is stuck in valve body that valve plate takes place often.Be added with conventional fillers between valve rod and the valve gap, owing to stuffing box can not obtain desirable pretightening force by the abundant filler of closed assembly, and filler is relative with valve rod to rub, serious wear, easily produce and leak, Chinese patent (bulletin CN2218858Y) discloses a kind of C RunddichtringO filler of novel valve, the sealing circle is because unbalance stress also makes valve rod and valve cover chamber gland leakage easily.

The purpose of this utility model is to provide a kind of fluid resistance that reduces, and hoisting capacity is little, closes tightly, and sealing is strong, heat resisting and pressure resisting, wear-resistant a kind of novel elastic gate valve.

The purpose of this utility model is achieved in that

The utility model includes valve body, valve plate, valve body guiding groove, valve rod, conventional fillers, Gland, valve gap etc., it is characterized in that: elastic sealing strip is housed on the valve plate, valve rod and valve cover chamber are equipped with elastic sealing device, and conventional fillers is arranged on the elastic sealing device.

Elastic sealing strip be shaped as the ring convex, promptly one annular hollow fin is arranged in edge near elastic metal sheet.

Elastic sealing device is made up of supporting position shelf and elastic ring, and the internal surface of supporting position shelf is a circular arc, is that the internal surface position of center line has a fin post in the circular arc bottom, on the fin post elastic ring is housed, and elastic ring is an open type hollow O type circle.

Have the hole that screw is passed on the elastic sealing strip.

Become elastic packing by hard sealing between the utility model valve plate and valve body, make elastic sealing strip by being out of shape the elastic compression valve body sealing surface of generation, elastic sealing strip contacts to R face with valve body sealing surface, contact for linear with valve body sealing surface, because valve rod and valve cover chamber are equipped with elastic sealing device, make in the elastic ring, outer R face and stem valve and stuffing box wall fit tightly to linearity and contact, sealing is tight, and friction factor is little, and sealing surface wear is little, simultaneously owing on the valve body guiding groove is arranged, the limiting valve plate level moves, so valve has certain throttling function, fluid resistance is little, hoisting capacity is little, and heat resisting and pressure resisting.

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

Fig. 1 looks sectional view for master of the present utility model;

Fig. 2 is the structural representation that the utility model elastic sealing strip is connected with valve plate;

Fig. 3 is the B-B figure of the utility model Fig. 2;

Fig. 4 is the A-A figure of the utility model Fig. 2;

Fig. 5 looks sectional view for the master of elastic sealing device of the present utility model;

Fig. 6 looks sectional view for elastic graph master of the present utility model;

Fig. 7 looks sectional view for supporting position shelf master of the present utility model;

Fig. 8 looks sectional view for the master that elastic sealing strip of the present utility model is used for Swing check valve.

The utility model ring convex elastic sealing strip 2, the hole of being passed on it by screw is fixed on the valve plate 3, there is guide rail valve plate 3 both sides, guiding groove 5 is arranged on the valve body 1, valve plate 3 and valve rod 4 screwed connections, two elastic sealing devices 6 are staggered relatively and be sleeved on the valve rod 4, and place in the valve gap 9, elastic ring 12 closely cooperates with the fin post 13 that supports on the position shelf 11, and conventional fillers 7 is housed on the elastic sealing device 6, and Gland 8 is connected with valve gap 9.

When the utility model uses, only need to rotate handwheel 14, making valve rod 4 drive valve plate 3 slides downward vertically along valve body 1 guiding groove 5, make annular hollow fin 10 distortion on the ring convex elastic sealing strip 2 on the valve plate 3, elastic sealing strip 2 and linear contact of valve body 1 hard sealing surface, elastic compression valve body 1 sealing surface that elastic sealing strip 2 produces by distortion, thereby throttle down.

Elastic sealing strip 2 of the present utility model also can be contained on the Swing check valve, elastic sealing strip 2 is installed on the valve plate 3 in the same way as described above, valve body 1 sealing surface has the groove 15 that matches with it with the hollow fin of resilient seal surface annular corresponding section, with under flowing medium and elasticity valve plate deadweight effect, the elasticity valve plate compresses valve body sealing surface, promptly encircling the convex elastic sealing strip is mounted in the valve body recess 15 by distortion, it is the R face that elastic sealing strip contacts with valve body spill sealing surface, contacting with annular hollow fin 10 sealing surfaces on the valve body is linear contact, and sealing tightly has certain shock-absorbing function.

Claims

1, novel elastic gate valve, include valve body [1], valve plate [3], valve body guiding groove [5], valve rod [4], conventional fillers [7], Gland [8], valve gap [9], handwheel [14] etc., it is characterized in that: elastic sealing strip [2] is housed on the valve plate [3], between valve rod [4] and valve gap [9] elastic sealing device [6] is housed, elastic sealing device [6] is gone up conventional fillers [7].

2, novel elastic gate valve according to claim 1 is characterized in that: elastic sealing strip [2] be shaped as the ring convex, promptly one annular hollow fin [10] is arranged in edge near elastic metal sheet.

3, novel elastic gate valve according to claim 1, it is characterized in that: elastic sealing device [6] is made up of supporting position shelf [11] and elastic ring [12], the internal surface of supporting position shelf [11] is a circular arc, in the circular arc bottom is that the internal surface midline position has a fin post [13], elastic ring [12] is housed on the fin post [13], and elastic ring [12] is an open type hollow O type circle.

4, novel elastic gate valve according to claim 1 is characterized in that: the outer shape of elastic sealing strip can be decided according to the valve plate shape.

5, novel elastic gate valve according to claim 1 is characterized in that: elastic sealing strip has the hole on [2].