CN2352798Y

CN2352798Y - Non-leakage valve

Info

Publication number: CN2352798Y
Application number: CN 98239594
Authority: CN
Inventors: 王从枝
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-07
Filing date: 1998-12-07
Publication date: 1999-12-08
Anticipated expiration: 2008-12-07

Abstract

The utility model relates to a non-leakage valve which is used for a gas pipeline or a liquid pipeline. The non-leakage valve comprises a valve body and a valve actuating mechanism. The utility model is characterized in that the valve actuating mechanism is provided with an outer magnet and an inner magnet which rotate together with a hand wheel; an isolation sealing cover is arranged between the inner and the outer magnets, and an inner hole of the inner magnet is connected with the upper end part of a valve rod by threads in a matching way. A movable valve connected with the lower part of the valve rod can be driven to rise and fall by the rotation of the inner magnet, so the purposes of opening and closing the non-leakage valve are realized, and the problem that medium can overflow from the upper end of the valve rod can be solved. The utility model has the advantages of flexible opening and closing, no repair and maintenance need and long service life.

Description

A kind of not leakage valve

The utility model relates to employed valve in a kind of conveying gas or the fluid pipeline.

As everyone knows, no matter be in gas pipeline or the fluid pipeline, all must be fitted with valve.This class valve generally includes a valve body, handwheel and one and is used for the Sealing of sealed valve stem, and the sealing part generally adopts seal washer or compresses and prevent that medium from leaking along the gap of valve rod and Sealing with filler, obtains effective seal.The shortcoming of this class sealing is, valve rod moves up and down in packing ring or filler, and friction causes the gap to increase for a long time, and medium leaks easily.Because filler compresses with gland and bolt and seals, it is too tight that gland is pressed, and valve closes, closes effort, and is dumb, again easily with the gland pressure break.The too pine of pressing, open and close is laborsaving, but occurs leaking, and makes seal failure.

The purpose of this utility model provides a kind of no leakage phenomenon, uses Q-percentile life length, opens and closes a kind of not leakage valve in flexible labour-saving.

The utility model is achieved in that a kind of not leakage valve, comprise valve body and valve actuator, described valve body has import and export passage and valve rod and the moving valve installation passage that is interconnected, it is characterized in that: described valve actuator has the outer magnet and the inner magnet that can rotate simultaneously with handwheel, in described, outer magnet is a cylindrical shape, inner magnet is enclosed within the outer magnet, be provided with the isolating seal cover between two magnets, the inner chamber of described isolating seal cover is installed passage with valve rod and is communicated, the upper end of this isolating seal cover is provided with a hollow shaft with isolating seal cover concentric, the hollow shaft upper end is shaped on screw thread and passes the handwheel central bore, be furnished with a back of the body cap that is used for fixing handwheel on the screw thread, the endoporus of described inner magnet and valve rod upper end portion are matchedly connected with screw thread.Described handwheel is provided with a valve opening indicator, it comprises an indication screw rod and is positioned at hollow shaft, to be fixed on the upper-end surface of handwheel with the nut that the indication screw rod matches by screw, described indication screw rod is circular for lacking, and is provided with a semicircle pin that prevents to indicate the screw rod rotation at the place, plane that lacks circle.Described semicircle pin is to be fixed in the opening of hollow shaft upper end screw thread by the fixing back of the body cap of handwheel.Described outer magnet comprises outer magnet rotary sleeve and active outer steel cover, and initiatively the outer steel cover is embedded on the endoporus perisporium of outer steel rotary sleeve, and described outer steel rotary sleeve has a neck, and this neck is enclosed within the handwheel center hole, by fixing pin the two is linked to each other.Described inner magnet is to be made of Stem Mut cover and driven interior magnetic steel sleeve, and the upper end of Stem Mut cover is provided with the edge that extends to radially, and described driven interior magnetic steel sleeve is enclosed within on the external diameter of Stem Mut cover tightly, and compresses by carrying on the back cap.Described valve actuator also comprises an outer containment vessel, and the following open end of containment vessel and the bottom of isolating seal cover join, and last open end inserts in the annular groove of handwheel lower end surface.

The utility model comprises that mainly inside and outside two magnets, inner magnet link to each other with screw thread with the valve rod upper end, and outer magnet and handwheel are connected as a single entity with fixing round pin, are provided with the isolating seal cover between two magnets.Need only rotation hand wheel like this, outer magnet just together rotates with handwheel, because the interaction in magnetic field, inner magnet and outer magnet rotate synchronously, thereby valve rod is moved up and down in the nut of inner magnet, driven the moving valve ascending, descending that links to each other with stem lower portion, reach the purpose of valve open and close.

The utility model compared with prior art has following advantage: it has solved the problem of medium from emerging easily between valve rod and the Sealing, and it is totally enclosed type that this valve adopts, and medium can not leak.The utility model does not need sealing gasket and filler, do not need to compress sealing with gland yet, but adopt the sealing of isolating seal cover, the suction-combining force of the inner magnet by the isolating seal cover is realized the open and close of valve, and therefore, the open and close of valve all changes in the chamber of isolating seal cover, open and close laborsaving flexibly, need not maintain, service life is long, in its pipe-line system applicable to all kinds of gases and liquid.

Drawing is described as follows:

Fig. 1 looks the sectional structure schematic representation for the utility model master.

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

Referring to accompanying drawing, Fig. 1 shows the utility model structural representation.It comprises valve body 1 and valve actuator 11; described valve body 1 has the import and export passage that is interconnected; and valve rod 4 and moving valve 2 installation passages 3; described valve actuator 11 mainly comprises inner magnet 25; isolating seal cover 8; outer magnet 6; handwheel 10; valve opening indicator 17; outer containment vessel 5; described inner magnet 25 is to be made of Stem Mut cover 27 that links to each other with valve rod 4 and driven interior magnetic steel sleeve 26; the upper end of Stem Mut cover 27 is provided with the flange 24 that extends to radially; for easy to process; Stem Mut cover 27 can be made of nut sleeve 30 and nut overcoat 29; be connected as a single entity with pin 28 between the two; the external diameter close-fitting of internal diameter and the Stem Mut of magnetic steel sleeve 26 cover 27 is integrated in driven, and is shaped on screw thread in the lower end of Stem Mut cover 27 and by carrying on the back cap 31 magnetic steel sleeve in driven 26 is fixed.At this moment, Stem Mut cover 27, driven interior magnetic steel sleeve 26 just become one, so be called inner magnet.By the rotation of inner magnet 25, make valve rod 4 upper and lower moving, reach open and close thereby drive the moving valve 2 that links to each other with valve rod 4 lower ends.Described isolating seal cover 8 adopts non-magnetic material to make, and is sleeve shape, and it has a closed end and an open end, and its open end links to each other with the installation passage of valve rod 4, and inner magnet 25 is sealed in fully in the cavity of isolating seal cover 8.Described outer magnet 6 is enclosed within on the cylindrical of isolating seal cover 8 and leaves the gap, it is to be made of outer steel rotary sleeve 9 and active outer steel cover 7, the external diameter of described active outer steel cover 7 and the internal diameter close-fitting of magnet steel rotary sleeve 9 are integrated, and be shaped on internal thread in the lower end of outer steel rotary sleeve 9, by exterior nut cap 32 active magnetic steel bushing 7 is fixed, described outer steel rotary sleeve 9 has a neck 23, insert in the endoporus of handwheel 10, by fixing pin 14 the two is linked to each other, the internal diameter of this neck 23 is lined with copper sheathing 22, be installed on the handwheel fixation hollow axle 21, for being slidingly matched, the lower end of this hollow shaft 21 links to each other with the coaxial heart in the upper end of isolating seal cover 8, and the upper end of hollow shaft 21 is shaped on outside thread, and be provided with back of the body cap 15 with handwheel 10 fixed-site, make handwheel can not break away from outer magnet 6.When rotation hand wheel 10, outer magnet 6 resembles a similar together spinning roller of driving gear, inner magnet 25 just looks like that a driven gear is accompanyed or follow rotation, and actual be inner magnet 25 and the suction-combining force of outer magnet 6 rotates synchronously, when outer magnet 6 left and right rotations, inner magnet 25 left and right rotations, produce the upper and lower mobile switching function of playing thereby driving the moving valve 2 that links to each other with valve rod 4 lower ends with regard to adhesive.Described valve opening indicator 17 is mounted on the end face of handwheel 10, it comprises nut 18 and indication screw rod 16, described nut 18 has the end face flange, by the screw on the end face flange nut 18 is fixed on the upper-end surface of handwheel 10 by screw 13, driving indication screw rod 16 when handwheel 10 rotations moves up and down, in order to prevent to indicate screw rod 16 to rotate together with handwheel 10, so will indicate screw rod 16 to be designed to lack circular, be provided with a semicircle pin 19 that prevents to indicate screw rod 16 rotations at 20 places, plane that lack circle, the internal diameter that this semicircle pin 19 is inserted in the opening on the hollow shaft 21 upper end screw threads by back of the body cap 15 is fixed, semicircle pin 19 can not be scurried out in opening, and be provided with graduation line at 20 places, plane that lack circle, so that grasp the size of valve opening.The lower open end of described outer containment vessel 5 is welded on the underpart of isolating seal cover 8, and upper open end is inserted in 12 li of the annular grooves of handwheel 10 lower end surfaces, can play the close and protect effect to outer magnet 6, and can be rainproof, waterproof, anti-corrosion.The utility model uses reliable, and no exosmose, and the interior flow of can regulate pipeline can satisfy the needs of various uses valve.

Claims

1, a kind of not leakage valve, comprise valve body (1) and valve actuator (11), described valve body (1) has import and export passage and valve rod (4) and moving valve (2) the installation passage (3) that is interconnected, it is characterized in that: described valve actuator (11) has the outer magnet (6) and the inner magnet (25) that can rotate simultaneously with handwheel (10), in described, outer magnet is a cylindrical shape, inner magnet (25) is enclosed within the outer magnet (6), be provided with isolating seal cover (8) between two magnets, the inner chamber of described isolating seal cover (8) is installed passage (3) with valve rod (4) and is communicated, the upper end of this isolating seal cover (8) is provided with a hollow shaft (21) with isolating seal cover (8) concentric, hollow shaft (21) upper end is shaped on screw thread and passes handwheel (10) central bore, be furnished with a back of the body cap (15) that is used for fixing handwheel (10) on the screw thread, the endoporus of described inner magnet (25) and valve rod (4) upper end portion are matchedly connected with screw thread.

2, a kind of not leakage valve according to claim 1, it is characterized in that: described handwheel (10) is provided with a valve opening indicator (17), it comprises an indication screw rod (16) and is positioned at hollow shaft (21), to be fixed on the upper-end surface of handwheel (10) with the nut (18) that indication screw rod (16) matches by screw (13), described indication screw rod (16) is circular for lacking, and locates to be provided with a semicircle pin (19) that prevents to indicate screw rod (16) rotation on the plane (20) that lacks circle.

3, a kind of not leakage valve according to claim 2 is characterized in that: described semicircle pin (19) is to be fixed in the opening of hollow shaft (21) upper end screw thread by the fixing back of the body cap (15) of handwheel (10).

4, a kind of not leakage valve according to claim 1, it is characterized in that: described outer magnet (6) comprises outer magnet rotary sleeve (9) and active outer steel cover (7), initiatively outer steel cover (7) is embedded on the endoporus perisporium of outer steel rotary sleeve (9), described outer steel rotary sleeve (9) has a neck (23), this neck (23) is enclosed within handwheel (10) center hole, by fixing pin (14) the two is linked to each other.

5, a kind of not leakage valve according to claim 1, it is characterized in that: described inner magnet (25) is to be made of Stem Mut cover (27) and driven interior magnetic steel sleeve (26), the upper end of Stem Mut cover (27) is provided with the edge (24) that extends to radially, described driven interior magnetic steel sleeve (26) is enclosed within on the external diameter of Stem Mut cover (27) tightly, and is compressed by back of the body cap (31).

6, according to any one described a kind of not leakage valve in the claim 1 to 5; it is characterized in that: described valve actuator (11), also comprise an outer containment vessel (5); the bottom of the following open end of containment vessel (5) and isolating seal cover (8) joins, and last open end inserts in the annular groove (12) of handwheel (10) lower end surface.