CN201096207Y

CN201096207Y - Holder type handle-possessing ball valve

Info

Publication number: CN201096207Y
Application number: CNU2007200651135U
Authority: CN
Inventors: 戴光荣; 戴光华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-15
Filing date: 2007-11-15
Publication date: 2008-08-06
Anticipated expiration: 2017-11-15

Abstract

The utility model discloses a holder type ball valve which is provided with a stem and is installed on a conveying pipeline to transfer gas, liquid or powder; sealing rings loaded with sealing fillers are arranged at both sides of the spherical section of the ball body which is provided with a stem; the ball body provided with a stem is arranged inside the inner cavity of the valve body and seamlessly contacts with the seal rings; a gland bush clipped at the upper port of the valve body is disposed at the peripheral region of the stem of the ball body; a tightening cap connected with the gland bush through screw threads presses a circular obturating ring; the inner wall of an obturating ring base loaded with a second obturating ring presses the second seal ring; a butterfly spring rests against the left side of the obturating ring base; a valve bonnet provided with an obturating ring is connected in the cavity at the left side of the valve body through screw threads. The holder type ball valve provided with a stem with such structure is light in weight, low in cost and flexible to operate and is of wide application and strong compensational functions; the series products thereof are applicable to various conveying pipelines.

Description

Wafer type band handle spherical ball valve

Branch art field

The utility model relates to a kind of ball valve, relates in particular to the wafer type band handle spherical ball valve on a kind of delivery line that is installed on conveying gas or liquid or powdered object.

Background technique

Mounting ball valve all on the Coal powder spray pipeline in metallurgy high furnace Coal powder spray system, the structural type of this ball valve is that the upper side on the ball valve spheroid is driven one and half curve baths earlier, the ball handle that will start ball valve during use is placed in this half curve bath, and the roating sphere handle can realize that the spheroid of ball valve rotates to reach the purpose that ball valve is opened or closed.The ball valve of this kind structure shape is easy deformation under high temperature or operations involving high pressure condition, be difficult to open or closes, and the phenomenon that ball valve is not only opened but also fitted badly often occurs, poor reliability, and the stress undue concentration, fragile, the life-span is short, the replacement cycle is frequent.It is 200720063071.1 " band handle spherical ball valve " that application number was arranged before the utility model, and the structure shape of this band handle spherical ball valve is tending towards rationally, and using effect is better, but it is big that deficiency is a volume, heaviness, the cost height can't form the product of seriation gauge.

Summary of the invention

In order to solve the technical problem that prior art exists, the utility model provides the wafer type band handle that a kind of volume is little, in light weight, operation is more flexible, sealability is good spherical ball valve.

For achieving the above object, the technical solution adopted in the utility model is: first seal ring that is placed with first stuffing box packing at the step place on body cavity the right, one side outward edge of the spherical part of band handle spheroid is placed on the inner chamber of valve body near first seal ring, sealing gland is sleeved on the band shank position of being with the handle spheroid through center hole, and its peripheral edge portion is stuck in the upper end-hole of valve body simultaneously.Between the band shank position of band handle spheroid and sealing gland, O-ring seal is arranged, be close to and be threaded with sealing gland and push down this O-ring seal.There is second seal ring of band stuffing box packing at the opposite side edge of the spheroid part of band handle spheroid, the inner chamber that the packing holder of seal ring is housed in its outer edges groove is pressed on second seal ring, butterfly spring leans against the left side of packing holder, valve gap with first seal ring is threaded in the inner chamber in valve body left side, and butterfly spring is pressed in the outside of packing holder.

Adopt a kind of wafer type band handle spherical ball valve that as above technological scheme provides compared with prior art, its technique effect is:

1. be applicable to various operating conditions, the wafer type band handle spherical ball valve that this kind structure forms is not only applicable to also can be applicable on the conveyance conduit of all gases or liquid on the powder conveyance conduit.

2. not long-pending little, in light weight, 30-40% reduces production costs.

3. multilayer and a plurality of seal ring and seal ring are installed, and good seal performance can be used in various bad working environment.

4. because butterfly spring is installed, make whole wafer type band handle spherical ball valve flexible, have compensate function.

5. installation, maintenance is convenient, and operability is stronger.

Description of drawings

Fig. 1 is the forward structure cross-sectional schematic of the described a kind of wafer type band handle spherical ball valve of model utility, also is Figure of abstract of the present utility model.

Fig. 2 is the left-hand schematic representation of Fig. 1.

Fig. 3 is the schematic top plan view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

A kind of wafer type band handle spherical ball valve described in the utility model comprise tight cap 1, O-ring seal 2, sealing gland 3, first stuffing box packing 4, second stuffing box packing 4 ', first seal ring 5, second seal ring 5 ', valve body 6, first seal ring 7, packing holder 8, butterfly spring 9, second seal ring 10, valve gap 11 and 12 (as shown in Figure 1) of band handle spheroid.Be placed with inboard circular with first seal ring, 5, the first seal rings 5 of first stuffing box packing 4 at the step place on valve body 6 inner chambers of non-symmetry structure shape the right.The outward edge of spherical part one side of band handle ring body 12 becomes seamless with first seal ring and contacts.Band handle spheroid 12 is placed on the inner chamber of valve body 6, the sealing gland 3 that is installed on valve body 6 upper end-hole is sleeved on the periphery of the band shank portion of band handle spheroid 12, between the inner ring of the periphery of the band shank portion of band handle spheroid 12 and sealing gland 3 O-ring seal 2 is arranged, tightly cap 1 is threaded with sealing gland 3 and pushes down O-ring seal 2.The outward edge of the opposite side of band handle spheroid 12 spherical parts with have second stuffing box packing 4 ' second seal ring 5 ' become seamless to contact.Described first seal ring 5 and second seal ring, 5 ' available metal material or nonmetallic material (as rubber) are made, first stuffing box packing 4 and second stuffing box packing 4 ' can be flexible material, like this, valve body 6 and arranged on left and right sides limits have second seal ring 5 ' and first seal ring 5 form the wafer type structure shapes.The inwall that the sealed picture seat 8 of second seal ring 10 is housed in its outer edges groove be pressed in second seal ring 5 ' on, the butterfly spring 9 that is put in valve gap 11 internal chamber walls leans against the left side of packing holder 8.The valve gap 11 that inner side edge is equipped with first seal ring 7 is threaded in the inner chamber on valve body 6 left sides.After valve gap 11 is threaded onto the inner chamber in valve body 6 left sides, make first seal ring 7 be pressed on the outside in valve body 6 left sides, seal.The central axis of valve body 6, seal holder ring 8, butterfly spring 9, valve gap 11 4 is on same straight line.

During enforcement, make and assemble described wafer type band handle ring ring valve, wafer type band handle spherical ball valve is installed to powdery thing or conveying gas or carries on the pipeline of liquid through as shown in Figure 2 attachment hole 14 usefulness connecting bolts simultaneously according to accompanying drawing.When delivery line needed gas transmission or transfusion or defeated powder thing, the band shank portion that clamps band handle spheroid 12 rotated and makes band handle spheroid 12 form passage, realizes the purpose of gas transmission or transfusion or defeated powder; Otherwise rotating band handle ball 12 forms closed circuit, no longer conveying or transfusion or defeated powder ....Flexible operation, easy to use, reach purpose described in the utility model.

Claims

1, a kind of wafer type band handle spherical ball valve that includes tight cap (1), O-ring seal (2), sealing gland (3), first seal ring (5), valve body (6), packing holder (8), butterfly spring (9), second seal ring (5 '), second seal ring (10), valve gap (11), band handle spheroid (12), it is characterized in that: be placed with first seal ring (5) with first stuffing box packing (4) at the step place on valve body (6) inner chamber the right, the outward edge of band handle spheroid (12) spherical part one side becomes seamless with first seal ring (5) and contacts; Band handle spheroid (12) is placed on the inner chamber of valve body (6), the sealing gland (3) that is installed on valve body (6) upper end-hole is sleeved on the periphery of the band shank portion of band handle spheroid (12), between the periphery of band shank portion of band handle spheroid (12) and sealing gland (3) O-ring seal (2) is arranged, the tight cap (1) that is threaded with sealing gland (3) is pushed down O-ring seal (3); The outward edge of the opposite side of band handle spheroid (12) spherical part becomes seamless with second seal ring (5 ') that second stuffing box packing (4 ') is arranged and contacts; The inwall that the packing holder (8) of second seal ring (10) is housed in its outer edges groove is pressed on second seal ring (5 '), and the butterfly spring (9) that is put in valve gap (11) internal chamber wall leans against the left side of packing holder (8); The valve gap (11) that inner side edge is equipped with first seal ring (7) is threaded in the inner chamber on valve body (6) left side.