CN2093281U

CN2093281U - Ball valve for manometer

Info

Publication number: CN2093281U
Application number: CN 91204675
Authority: CN
Inventors: 刘洪涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-23
Filing date: 1991-03-23
Publication date: 1992-01-15

Abstract

The utility model discloses a ball valve for manometer, which is a stop valve used for connecting a build in spherical shape valve core which is arranged between a manometer and a pressure vessel. The utility model is composed of a valve body 12, a valve stem 1 in a stuffing box, a handle 6 at the upper end of the valve stem 1, a needle valve 13 in a needle valve seat 14, a steel ball 11 in the valve body 12, joints 8 at both ends of the valve body 12, wherein, the side of the valve body 12 is provided with the needle valve seat 14, and the upper part is provided with the stuffing box; the ball 11 has a groove which fits the tenon of the valve stem 1, and the inner part of the ball 11 has a three-way passage; the outer side of each joint 8 is provided with a connecting nut 7, the inner side is sheathed with a sealing ring 10, and a straight screw body is provided with a flat nut 9. When pressure exists in the container, the ball-valve can be still adjusted to flexibly rotate so as to eliminate leakage, and the utility model is convenient for workers to check out pressure gauges and pipelines.

Description

Ball valve for manometer

The utility model relates to a kind of pressure gauge ball valve, is applicable to the stop valve that spherical valve core is housed that connects between pressure gauge and the pressurized container.

In prior art, existing pressurized container comprise boiler and the pressure gauge installed thereon between be provided with stop valve, when in container or the boiler medium that is higher than atmospheric pressure being arranged, also can close stop valve where necessary and repair with the dismounting pressure gauge and change or verification.These stop valves have the so-called cock that uses cone plug, and the stop valve that uses the bacterium shape ball valve heart and taper valve face is arranged, use in addition flashboard shape, cylindrical or spherical valve core etc. multiple pattern stop valve.On these checking-valve bodies, all be not provided with the needle-valve of bypass, be not easy to the bypass release and respectively the pipeline of closing pressure table or pressurized container to check gauge hand and whether rotate flexibly or whether pressure gauge and pressurized container pipeline have stopping state to take place.The stop valve that spherical valve core is arranged in wherein passing by to use always is because two ends all compress circular gasket with having the joint that covers the limit with the dome limit on it and seal on valve body two outer side surfaces, and the spherical valve core in the valve body is imported and exported passage and then sealed by the seal ring of installing on the joint inner side surface simultaneously.Cun be difficult to grasp by chance suitablely and absolutely accurate because part processing and assembling are concerned about mutually, joint squeezes and adorns the tight slightly spherical valve core that causes and can't rotate flexibly sometimes, too loosely again sometimes spaciously can't keep the sealing of spherical valve core access way mouth and causes leakage.Especially when with spherical valve core directly recline contact seal ring service time, long hair was given birth to eccentric wear or plastic deformation slightly the time, the joint that install its both sides is subjected to itself to cover the restriction of limit and O-ring pads placement size and can't moves adjustment, make ball valve usually be in the water clock state, both unhygienic also dangerous.Pressurized container can not dismantle ball valve under the pressure condition at band and change and also can't keep in repair, and this water clock state regular meeting delays and continues many days, also need subtract the interior whole media of step-down power head pressure container when serious and dismantle to repair and change, and bothers very much.

The purpose of this utility model provide a kind of on ball valve two side connectors all the uncovered limit do not re-use yet and cover the limit and compress circular gasket and come the sealed valve body two ends, thereby two joints can be advanced and retreat arbitrarily adjust the position in valve body and only seal the import and export of spherical valve core, make spherical valve core not only can often keep rotating flexibly and place, passway but also do not have any seepage situation by the seal ring on joint the inner.Even in pressurized container, still maintain and also can suitably adjust the novel pressure table ball valve of handling water clock under the pressure medium situation where necessary.Also be provided with needle-valve so that carry out the bypass release at any time and distinguish closing pressure table or pressure vessel conduit to check indicator degree of flexibility and line clogging situation in its valve body side.

The utility model provides a kind of pressure gauge ball valve, it is the stop valve that spherical valve core is housed that is used to connect between pressure gauge and the pressurized container, it is the valve body ［ 12 ］ that stuffing box is housed by its top, the valve rod ［ 1 ］ that seals with gland ［ 4 ］ packing ring ［ 3 ］ filler ［ 2 ］ in stuffing box, the handle ［ 6 ］ that pins with nut and packing ring ［ 5 ］ in valve rod ［ 1 ］ upper end, the steel ball ［ 11 ］ with valve rod ［ 1 ］ lower convex tenon fit of having at valve body ［ 12 ］ center, having two set of joints ［ 8 ］ that its inboard of attaching nut ［ 7 ］ is with seal ring ［ 10 ］ in its outside at valve body ［ 12 ］ two ends forms, it is characterized in that: a, described valve body ［ 12 ］ is equipped with pintle valve seat ［ 14 ］ on the side therein, and the needle-valve ［ 13 ］ with sealing gasket ［ 15 ］ stuffing box gland ［ 16 ］ sealing is arranged in pintle valve seat ［ 14 ］; B, its connecting end that valve body ［ 12 ］ is installed of described joint ［ 8 ］ are the straight thread body of rod on no any lid limit, are with flat nut ［ 9 ］ in the outside of the straight thread body of rod; C, described seal ring ［ 10 ］ have and valve body ［ 12 ］ inner chamber aperture equal outer diameters and the internal diameter that matches with the inboard plush copper of joint ［ 8 ］, and the conical surface that tightly cooperates with steel ball ［ 11 ］ is arranged; D, described steel ball ［ 11 ］ are provided with the passage of threeway shape on its cross section, the internal channel of its straight passage and valve body ［ 12 ］ two end connectors ［ 8 ］ is on same vertical center line, the inner duct of its by-pass and valve body ［ 12 ］ side pintle valve seat ［ 14 ］ on same horizontal center line, and on steel ball ［ 11 ］ end face, be provided with parallel with the by-pass and with the groove of valve rod ［ 1 ］ lower end tenon corresponding matching; Its mounting point should parallel with the vertical center line of ball valve when e, described handle ［ 6 ］ were in unimpeded state when spherical valve core import and export passage.Its seal ring ［ 10 ］ filler ［ 2 ］ sealing gasket ［ 15 ］ stuffing box gland ［ 16 ］ is all used the polytetrafluoroethylmaterial material manufacturing, and its seal ring ［ 10 ］ should use high temperature resistant and wear-resisting metallic material when use is surpassing on the pressurized container of 250 ℃ of medium temperatures.

The utility model compared with prior art, two seal rings that contact with spherical valve core that are contained on the joint medial extremity that its valve body only is used in the valve body seal, two all removable adjustment of joint, can keep spherical valve core to rotate flexibly and do not have any seepage, under the band pressure condition, also can carry out suitable adjusting and check whether whether sensitive pipeline stops up pressure gauge, very reliable and nimble.

Accompanying drawing:

Fig. 1, pressure gauge ball valve front view

Fig. 2, pressure gauge ball valve sectional elevation

Part name in the figure:

1, valve rod 2, filler 3, packing ring 4, gland 5, nut and packing ring 6, handle 7, attaching nut 8, joint 9, flat nut 10, seal ring 11, steel ball 12, valve body 13, needle-valve 14, pintle valve seat 15, sealing gasket 16, stuffing box gland

Embodiment: as shown in drawings, make the extremely smooth steel ball of outer surface ［ 11 ］ as spherical valve core with stainless steel material, medium temperature is no more than under 250 ℃ of situations in pressurized container, its filler ［ 2 ］ seal ring ［ 10 ］ sealing gasket ［ 15 ］ stuffing box gland ［ 16 ］ all can adopt the teflon manufacturing, then should use refractory antiwear sealing good metal material instead for high temperature media.The remaining parts material generally can adopt carbon steel, makes for the then available in case of necessity non-ferrous metal of special media or other advanced materials.There is the pressure gauge screw thread of M20 * 1.5 of left-handed and dextrorotation at its two ends of two attaching nuts ［ 7 ］ Xuan respectively.Joint ［ 8 ］ is except that having the identical matching thread with valve body ［ 12 ］ connecting end, with attaching nut's ［ 7 ］ connecting thread then respectively be M20 * 1.5 screw threads of left-handed and dextrorotation, the neck between two sections screw threads also is provided with the facet of two symmetries so that use the spanner chucking to install and adjust the position.Its mounting point should parallel with the vertical center line of ball valve when the handle ［ 6 ］ on the valve rod ［ 1 ］ was in unimpeded state when spherical valve core import and export passage.Steel ball ［ 11 ］ should make the vertical center line of vertical center line of its horizontal center line and pintle valve seat ［ 14 ］ and valve rod ［ 1 ］ remain on the same cross section when installing, the joint that is with seal ring ［ 10 ］［ 8 ］ advance and retreat adjustment that can valve body ［ 12 ］ two ends.When reaching with steel ball ［ 11 ］ sphere two seal ring ［ 10 ］ peripheries and valve body ［ 12 ］ lumen orifice wall surface, the inside precession of joint ［ 8 ］ all tightly fits, and with handle ［ 6 ］ pull valve rod ［ 1 ］ when its underpart tenon stir steel ball ［ 11 ］ if on groove rotate when not feeling to have any clamping stagnation to hinder quite nimbly and freely, can respectively flat nut ［ 9 ］ be tightened to draw close with locking on valve body ［ 12 ］ end face and move back.Whether its pintle valve seat ［ 14 ］ side is provided with tap hole, open needle-valve ［ 13 ］ and pull handle ［ 6 ］ and steel ball ［ 6 ］ is rotated and pressurized container or manometric passage are blocked allow a small amount of medium discharge release can to rotate flexibly or each pipeline has or not obstruction in order to the inspection pressure list index.Also can connect a small-bore pipeline in addition on its discharge aperture and pass in the special utensil, in order to avoid the medium pollution container surroundings.

Claims

1, a kind of pressure gauge ball valve, it is the stop valve that spherical valve core is housed that is used to connect between pressure gauge and the pressurized container, it is the valve body [12] that stuffing box is housed by its top, the valve rod [1] that seals with gland [4] packing ring [3] filler [2] in stuffing box, the handle [6] that pins with nut and packing ring [5] in valve rod [1] upper end, have two set of joints [8] that its inboard of attaching nut [7] is with seal ring [10] with the steel ball [11] of valve rod [1] lower convex tenon fit, in its outside at valve body [12] two ends in having of valve body [12] center and form, it is characterized in that:

A, described valve body [12] are equipped with pintle valve seat [14] on the side therein, and the needle-valve [13] with sealing gasket [15] stuffing box gland [16] sealing is arranged in pintle valve seat [14];

B, its connecting end that valve body [12] is installed of described joint [8] are the straight thread body of rod on no any lid limit, are with flat nut [9] in the outside of the straight thread body of rod;

C, described seal ring [10] have and valve body [12] inner chamber aperture equal outer diameters and the internal diameter that matches with the inboard plush copper of joint [8], and the conical surface that tightly cooperates with steel ball [11] is arranged;

D, described steel ball [11] are provided with the passage of threeway shape on its cross section, the internal channel of its straight passage and valve body [12] two end connectors [8] is on same vertical center line, the inner duct of its by-pass and valve body [12] side pintle valve seat [14] on same horizontal center line, and on steel ball [11] end face, be provided with parallel with the by-pass and with the groove of valve rod [1] lower end tenon corresponding matching;

Its mounting point should parallel with the vertical center line of ball valve when e, described handle [6] were in unimpeded state when spherical valve core import and export passage.

2, ball valve according to claim 1, it is characterized in that described seal ring ［ 10 ］ filler ［ 2 ］ sealing gasket ［ 15 ］ stuffing box gland ［ 16 ］ all uses the polytetrafluoroethylmaterial material manufacturing, its seal ring ［ 10 ］ should use high temperature resistant and wear-resisting metallic material when surpassing on the pressurized container of 250 ℃ of medium temperatures when using.