CN2489153Y

CN2489153Y - Conical track ball valve

Info

Publication number: CN2489153Y
Application number: CN 01228972
Authority: CN
Inventors: 姜慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-26
Filing date: 2001-06-26
Publication date: 2002-05-01
Anticipated expiration: 2011-06-26

Abstract

The utility model relates to a conical track ball valve, which has a valve rod and a ball body in eccentric reverse cone fit and key type connection. The valve body is provided with a limit groove in a right angle facing a rotating shaft. The limit groove cooperates with a positioning pin positioned on the bracket. Lower part of the ball body is provided with a guide shaft with bottom mother line in a sphere, and one side of the ball body cooperates with the sealing seat positioned on the valve body. The utility model uses the rotating valve rod to control valve opening and closing for the ball body and the sealing seat to complete the opening and closing of the valve. The utility model is characterized by good sealing property and light operation, which greatly reduces the mechanical power, and is not affected by temperature and pressure of liquid medium.

Description

Bevel-type track ball valve

The utility model relates to a kind of improved valve, specifically a kind of bevel-type track ball valve.

At present, employed ball valve has all adopted and has been applied to the spheroid that necessarily gives under the tight power, done movingly for friction with sealing seat, carries out the open and close passage to valve.Open the reinforcing friction that has repeatedly owing to close, just produce the as easy as rolling off a log wearing and tearing that cause sealing surface, so that cause valve leak or sealing surface section to be ground the bad stuck problem that occurs.

The purpose of this utility model is to overcome above-mentioned technical deficiency part, does not bestow that tight power does not have friction to spheroid, with sealing seat and the bevel-type orbiting valve that opens and closes valve port and provide a kind of.

Task of the present utility model is achieved in that a kind of bevel-type track ball valve, form by valve body 1, gland 8, spheroid 4, valve rod 11, handwheel 17, top gland 8

links valve body

1, and 11 of valve rods that pass gland 8 centers are equipped with sealing gasket 9, handwheel 17 is equipped with in the valve upper end, and the lower end is connected with spheroid 4.It is characterized in that a, spheroid 4 tops are back taper holes of band keyway, the eccentric cone that falls of the band keyway of it and valve rod 11 lower ends matches, and connects with key 7 location; The axis of guide 3 ends of spheroid 4 bottoms have the bus spherical surface, prop up to be contained in the central recess of the lower cover 2 that is connected with valve body 4; Wide wear ring 5 is arranged on spheroid 4 one side external surfaces, it and be installed in wear ring 5 on the ring sealing base 6 of valve body 1 passway ' match by seal ring; B, valve rod 11 tops are installed in the intermediate hole of support 14, in this cooperation place along on the outer peripheral surface, the restraining groove 13 that has circumferential commentaries on classics to be connected to axially to be rectangular in shape, it matches with locating stud 12 on being installed in support 14; Be installed in nut in the hole 15 and the binding of valve rod 11 upper ends on the support 14, middle part quilt and cap 16 blanking covers are on support 14, and nut 15 tops are passed and cap 16 center holes and handwheel 17 bindings; The lower end of c, support 14 and waist shape gland 10 are mounted in above the gland 8.Valve rod 11 tops can be the convex shoulder ledge structures that has on support 14 in the hole movingly, and link with last handwheel 17 after reducing diameter, and do not need intermediate nut 15 links.The eccentric distance e that valve rod 11 bottoms and spheroid 4 inverted cones cooperate is parallel with its axis hole pipeline when valve body 1 access portal is closed; Wide wear ring 5, wear ring 5 ', its width can be to exchange structural type; Can be respectively to be made into integrated type with spheroid 4, sealing seat 6, or embedded structure; The axis of guide 3 of spheroid 4 can be integrated type with spheroid 4 or separate coupled.It is that the bus bottom is the axis of guide 3 of spherical, the restraining groove of valve rod 11 and the cooperating structure of locating stud 12 for eccentric taper fit with key joint, spheroid 4 bottoms that the utility model adopts spheroid 4 and valve rod 11, finish ball body of valve thus and have the advantages that to incline and rotate, reach the purpose of eliminating and having avoided the sealing surface scratch in the valve to damage from also.

The utility model advantage compared with the prior art is: since spheroid and valve rod be adopt eccentric tapering connect, and in addition valve rod in its restraining groove and start under locating stud cooperates, so rotation in the whole operation process, with the spheroid of opening/shutting valve along pipeline to swing, all the time can not influence the quality of fit of its spheroid and sealing seat, avoid the friction between spheroid and the sealing seat and bring each other wearing and tearing; When Open valve, rotation valve rod inclines under sealing seat and the support at the axis of guide spheroid, and is acted under the axial lift adjustment by valve rod restraining groove, locating stud, and the pressure fluid of pipeline evenly passes through switch valve along spherome surface.Can eliminate high-velocity fluid like this to sealing seat local scour corrosion, can not produce on the start sealing surface of open-close type and relatively rotate friction, or ruin sealing surface because of the little bits of fluid grind, so good seal performance, long service life is operated lightly, has significantly reduced motor-driven power; And the use that has solved pipeline valve under the particular surroundingss such as high temperature, high pressure, low temperature.

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

Fig. 1 is an overall structure sectional view of the present utility model.

Fig. 2 is the structural drawing that valve rod, spheroid are opened valve port.

Fig. 3 is the key plan of locating stud when valve port is opened M, pass N when launching locating slot.

Fig. 4 is the bottom view of valve rod lower cone.

Among the figure: 1. valve body 2. lower covers 3. axis of guides 4. spheroids 5. wide wear rings 5 '. wear ring 6. sealing seats 7. keys 8. glands 9. sealing gaskets 10. waist shape glands 11. valve rods 12. locating studs 13. restraining grooves 14. supports, 15. nuts 16. and cap 17. handwheels

Referring to Fig. 1, bevel-type track ball valve, its spool are passage spheroid 4, and down the termination bus being arranged is the axis of guide 3 of spherical; (referring to Fig. 2) is inlaid with wide wear ring 5 and is installed in the wear-resisting wiping ring 5 of sealing seat 6 ends on the valve body 1 ' match on the one side opening face; The top of spheroid 4 is that the reverse taper hole of band keyway and the following inverted cone of valve rod 11 band keyways cooperate, and connects with key 7 therebetween.Gland 8 center holes pass valve rod 11 and are installed on the valve body 1, adopt sealing gasket 9 and seal ring therebetween, valve rod 11 tops are coated with support 14, on 11 upper edge weeks of valve rod turning right axially, be 90 ° restraining groove 13, match with the locating stud 12 that is installed on the support 14, the top links nut 15 with left hand thread on valve rod 11, and by and cap 16 shutoff on support 14 tops, nut 15 tops pass and cap 16 center holes after the top link with fastening piece and handwheel 17.Support 14 lower ends and waist shape gland 10 are installed on the gland 8, and are suppressing sealing gasket 9.Throttle down is: clockwise rotate handwheel 17, referring to Fig. 3,4, driving nut 15 rotates, locating stud 12 is limited in valve rod 11 peripheral groove outer ends, when nut 15 drive valve rods 11 and spheroid 4 rotate to 90 °, locating stud 13 goes in the axial groove of restraining groove 13, and spheroid 4 has been in the close port direction, be rotated further handwheel 17 again, because the effect of the restraining groove 13 on 12 pairs of valve rods 11 of locating stud can only be moved valve rod downward vertically, and no longer drive spheroid 4 and rotate, and valve rod 11 lower ends and spheroid 4 are the back draught cooperations with eccentric distance e, valve rod 11 with conical surface eccentric distance e at the awl of machinery to pushing spheroid 4, and the axis of guide 3 spheroid of supporting 4 is arranged, make wide wear ring 5 be pressed on the wear ring 5 of sealing seat 6 ' on, finish throttle down by the push and block of bevel-type track.

Open valve is: rotate counterclockwise handwheel 17, nut 15 rotates thereupon, the locating stud 12 of this moment is in the axial groove of restraining groove 13, therefore valve rod 11 can only promote vertically upward, cause valve rod 11 to cooperate with spheroid 4 lax pressing to of back draught, under the effect of liquid medium power, spheroid 4 breaks away from sealing seat 6, be rotated further handwheel 17 again, valve rod 11 enters at locating stud 12 under the restraint at circumferential restraining groove position changes 90 °, 11 of valve rods drive spheroid 4 by linking bond 7 and rotate 90 ° simultaneously, and spheroid 4 just goes to the valve port full application position.

Claims

1, a kind of bevel-type track ball valve, form by valve body (1), gland (8), spheroid (4), valve rod (11), handwheel (17), top gland (8) links valve body (1), and pass between the valve rod (11) at gland (8) center sealing gasket (9) is housed, handwheel (17) is equipped with in the valve upper end, the lower end is connected with spheroid (4), it is characterized in that:

A, spheroid (4) top are the back taper holes of band keyway, and the eccentric cone that falls of the band keyway of it and valve rod (11) lower end matches, and with the connection of key (7) location; The axis of guide (3) end of spheroid (4) bottom has the bus spherical surface, props up in the central recess that is contained in the lower cover (2) that is connected with valve body (4); On spheroid (4) one side external surfaces wide wear ring (5) is arranged, it and the wear ring (5 ') that is installed in by seal ring on the ring sealing base (6) of valve body (1) passway match;

B, valve rod (11) top are installed in the intermediate hole of support (14), in this cooperation place along on the outer peripheral surface, the restraining groove (13) that has circumferential commentaries on classics to be connected to axially to be rectangular in shape, it matches with locating stud (12) on being installed in support (14); Be installed in nut (15) and valve rod (11) upper end that support (14) goes up in the hole and link, the middle part by and cap (16) blanking cover on support (14), nut (15) top is passed and cap (16) center hole and handwheel (17) binding;

The lower end of c, support (14) and waist shape gland (10) are mounted in above the gland (8);

2, bevel-type track ball valve according to claim 1, it is characterized in that: valve rod (11) top can be to have at support (14) to go up in the hole movingly convex shoulder ledge structure, and link with last handwheel (17) behind the minimizing diameter, and do not need intermediate nut (15) link;

3, bevel-type track ball valve according to claim 1 is characterized in that: wide wear ring (5) and its width of wear ring (5 ') can be to exchange structural type; Can be respectively and spheroid (4), sealing seat (6) are made into integrated type or embedded structure;

4, bevel-type track ball valve according to claim 1 is characterized in that: the axis of guide (3) of spheroid (4) can be integrated type with spheroid (4) or separate coupled.