CN2204895Y

CN2204895Y - High sealed ball valve

Info

Publication number: CN2204895Y
Application number: CN 94243404
Authority: CN
Inventors: 宋淑棉
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-04
Filing date: 1994-11-04
Publication date: 1995-08-09
Anticipated expiration: 2004-11-04

Abstract

The utility model relates to a high sealed ball valve containing the complete front cover of a rotary entity. The utility model comprises a valve body, a valve cover, a valve rod and a handle. The utility model is characterized in that a hand wheel and a hand wheel frame is added; a ball body is cut into a wedge surface by a channel; the upper and the lower parts of the ball body are respectively provided with a seal ring device; a sealing filler which is buckled with a press cover is arranged between the valve rod and the valve cover; a press cover and the valve body are integrally connected by a bolt. When the utility model is not tightly closed, the ball body is downward translated by rotating a hand wheel, and the ball body can close the ball valve. Thus, the leakage caused by the abrasion of the ball valve is solved. The ball valve is suitable for using in the gas pipeline, the high-temperature high-pressure pipeline, etc.

Description

High sealed ball valve

The utility model relates to a kind of ball valve of complete front cover that comprises a rotation entity, opens, closes mainly and rotatablely move, particularly the high sealing ball valve.

The ball valve that uses mainly is made up of left and right valve body, spheroid, valve rod and handle at present, and wherein spheroid is cut into two parallel planes by passage, and spheroid top has groove, and valve rod embeds in the groove, makes that spheroid rotated in the lump when valve rod rotated.Be provided with seal ring at spheroid and valve body connecting part.Ball valve uses certain hour, and leaking appears in spheroid and valve body wearing and tearing.

The purpose of this utility model is that a kind of spheroid of design can upper and lower mobile high sealing ball valve, to solve the valve leakage problem.

The utility model is achieved in that

A kind of high sealing ball valve, comprise valve body, valve gap, spheroid, valve rod, handle and bolt, it is characterized in that also being provided with handwheel and handwheel frame, the handwheel frame is the cylinder of a band supporting frame, and lining is housed in the cylinder, and lining is with handwheel outward, both connect with key, fastening with locknut above, handwheel frame and valve gap are the one foundry goods, and it is identical with existing Wedge gate valve loam cake supporting structure.Spheroid is cut into two planes by passage and is 5 °～15 ° angles, and the left and right two ends of spheroid all are placed with by back-up ring, and seal ring and scrape dirty snare seal arrangement together, spheroid squeeze in valve body two with seal arrangement and be in 5 °～15 ° the wedge surface; Valve rod and valve cover chamber also have stuffing box packing, withhold sealing gland above it, by swing bolt sealing gland are connected with valve body, and fastening with nut, the bottom of valve body is provided with nut.

Nut is provided with center hole, and Decompression valves is housed in the center hole, when valve cuts out, if produce high temperature, high pressure in the cavity, Decompression valves is opened pressure release automatically when the time comes, plays over-voltage protecting function.

Valve gap is provided with oil seal tube, and from top injection oil, oil will be bonded on the whole sphere along with spheroid rotates, and promptly seal and lubricate.

The spheroid neck also is with spring, and both ends of the spring presses valve gap and spheroid, is used to prevent the effect of static.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 the utility model structural representation.

Fig. 2 structure I partial enlarged drawing.

Spheroid of the present utility model 18 cross sections are wedge surface, and each becomes 2.5 °～7.5 ° angles of wedge two sections with valve rod 10 axis.When moving handle, valve rod 10, handwheel 2 and spheroid 18 all rotate thereupon, sealing or unlatching pipeline, and this is identical with existing ball valve using method.

Handwheel 2 and handwheel frame 4 that the utility model has been set up, handwheel frame 4 are cylinders of a band supporting frame, and lining 5 is housed in the cylinder, the lining 5 outer handwheels 2 that are with, and both connect with key 3, and fastening with locknut 1 above, handwheel frame and valve gap be the one foundry goods.When spheroid and valve seal sternly do not take place to leak, clockwise rotate handwheel 2, handwheel 2 drives linings 5 and rotates, because lining 5 is to be threaded with valve rod 10, at this moment, valve rod 10 downward translations, spheroid 18 is also followed downward translation, makes that spheroid 18 and seal ring 16 are compacted, reaches forced seal.When opening and closing moment when excessive, but backward rotation handwheel also makes the spheroid translation (distance is very little) that makes progress that ball valve is opened and closed easily.

Spheroid 18 cross sections are wedge surface, this wedge surface becomes 2.5 °～7.5 ° angles of wedge among the embodiment with valve rod 10 axis, spheroid 18 left and right two ends all are placed with back-up ring 15, seal ring 16 and scrape dirt circle 17 seal arrangements that are nested together, in the spheroid wedge surface that two are 5 °～15 ° of angles in seal arrangement pushes valve body.When dust or dirt stick to sphere, scrape dirt 17 dirt on the spheroid 18 can be wiped off automatically along with ball valve opens and closes, play dirt-removing functions.

Valve rod 10 and valve gap 24 also are equipped with stuffing box packing 12, withhold sealing gland 9 above it, by swing bolt 7 sealing gland 9 are connected with valve body 20, and be fastening with nut 8.Its effect is to increase sealing, and when sealing did not live, swivel nut 8 made sealing gland 9 weight stuffing box packing 12 can solve poorly sealed problem.

The utility model has following advantage than common ball valve:

1, because the cold flow properties of tetrafluoro often causes common ball valve to be not closed completely, valve can only be pulled down from pipeline when the time comes and be broken, readjust, suppress, very inconvenient. Because it is elevating mechanism and 5 ° of angles of wedge that this valve has the such forced seal function of gate valve, when being not closed completely, only need tight once tightly not leaked with handwheel.

2, owing to impurity in many media is too many, often cause these impurity of alluvial gum deposit (such as the tar in the artificial coal gas, the silt during petroleum gas is carried) to be attached on the sphere, when switch, often cause the scratch of sealing place, gas leakage. And this product has the pressure decontamination plant, can scrape off dirt, avoids scratch. Scratch is arranged occasionally, as long as tight once tightly having sealed, because this product has the such forced seal function of Wedge Gate Valves with handwheel.

3, to open and close moment very big for common ball valve, and that this product opens and closes moment is very little, because of this product can be earlier with handwheel unlay open and close again very laborsaving.

4, this product has oiling device, i.e. lubricated, again sealing.

The utility model is applicable to gas pipeline, also can be used for using in HTHP or the low-temperature deep pipeline, and medium can be gas, liquid, also can fit the powdery fluid.

The accompanying drawing mark:

1, locknut; 2, handwheel; 3, key; 4, handwheel frame; 5, lining; 6, handle; 7, eyelet bolt; 8, nut; 9, sealing gland; 10, valve rod; 11, lock shaft; 12, airtight and watertight padding; 13, bolt; 14, spring; 15, back-up ring; 16, sealing ring; 17, scrape the dirt circle; 18, spheroid; 19, oil seal tube; 20, valve body; 21, nut; 22, pad; 23, relief valve; 24, valve gap.

Claims

1, a kind of high sealing ball valve, comprise valve body 20, valve gap 24, spheroid 18, valve rod 10, handle 6 bolts 13, it is characterized in that also being provided with handwheel 2 and handwheel frame 4, handwheel frame 4 is cylinders of a band supporting frame, lining 5 is housed in the cylinder, the lining 5 outer handwheels 2 that are with, both connect with key 3, fastening with locknut 1 above, handwheel frame and valve gap are the one foundry goods; Spheroid 18 is cut into two planes by passage and is 5 °～15 ° angles, spheroid 18 left and right two ends all are placed with by back-up ring 15, seal ring 16 and scrape dirt circle 17 seal arrangements that are nested together, spheroid squeeze in valve body two with seal arrangement and are in 5 °～15 ° the wedge surface; 24 of valve rod 10 and valve gaps also have stuffing box packing 12, withhold sealing gland 9 above it, by swing bolt 7 sealing gland 9 are connected with valve body 20, and fastening with nut 8, the bottom of valve body 20 is provided with nut 21.

2, high sealing ball valve according to claim 1 is characterized in that nut 21 is provided with center hole, is equipped with Decompression valves in the center hole.

3, high sealing ball valve according to claim 1 is characterized in that valve gap 24 is provided with oil seal tube 19.

4, high sealing ball valve according to claim 1 is characterized in that spheroid 18 necks also are with spring 14.