CN2173331Y - Valve - Google Patents

Abstract

The utility model relates to an on-off valve, comprising a valve body, a valve clack, a valve clack traveling mechanism and a valve clack rotation mechanism. The opening and the closing movements of the valve clack are formed by the traveling movement of the valve clack along the shaft line of the valve seat and the rotational movement of the valve clack surrounding the shaft line of the rotation shaft. Thus, in the movement course, the valve clack of the on-off valve has no relative motion and dynamic friction with the valve seat on the sealing surface, and has no wear problem caused by the dynamic friction. The on-off valve of the utility model has abrasion resistant and long service life, and is a novel on-off valve after the gate disconnection valve, the ball valve, the butterfly valve, the stop valve and the plug valve.

Description

Valve

The utility model relates to a kind of on-off valve.

Known on-off valve has gate valve, ball valve, butterfly valve, stop valve and stopcock etc., the flap of these several valves is in the process of opening and closing, because of with there being relative movement to produce kinetic friction between the valve seat at sealing surface, this kinetic friction will cause the too early destruction of the too early wearing and tearing and the sealing of flap and valve seat, the subject matter that this known just on-off valve in use exposes.

The purpose of this utility model provides in a kind of process of the opening and closing at flap, and flap is with the on-off valve that does not have the kinetic friction phenomenon between the valve seat all the time.

This on-off valve is by valve body, flap, valve flap translational mechanism and flap rotating mechanism are formed, be provided with import in the valve body, export and be located at the valve seat of outlet end, valve flap translational mechanism is by the screw axis that is sleeved in the valve body, threaded male thread cooperates and is provided with the nut of shift fork, the face cam of band driving lever, be located at the square groove of the rotatingshaft lower end that is set in valve body and be located on the flap and and form with the slide block that square groove is slidingly matched, wherein shift fork is connected with driving lever, the endoporus of face cam with the cylndrical surface outside the valve seat movingly, the cam face of face cam then contacts with the arc-shaped curved surface that is located at the pushing block on the flap, and the flap rotating mechanism is by the driving gear with the thread spindle screw-thread fit, be located at the driving gear rising stop platform of screw axis upper end and be located on the rotatingshaft and and form with the driven gear of driving gear engagement.

The on-off valve of said structure, when the rotating screw bolt axle, nut and driving gear rise the axis of while along screw axis, nut makes the face cam rotation by shift fork and driving lever, cam face promptly promotes flap and lifts off a seat without spin, after the ascending motion of driving gear is placed restrictions on by the stop platform, driving gear begins to rotate with screw axis, and drive the flap moving axis rotation that rotates by driven gear and rotatingshaft, therefore, in the process of the opening and closing of flap, the flap of this on-off valve does not exist relative movement and kinetic friction with valve seat on its sealing surface, just do not have the wear problem that causes because of kinetic friction yet, this shows, on-off valve described in the utility model is wear-resistant, and good seal is a kind of novel on-off valve behind on-off valves such as gate valve.

Further illustrate detailed content of the present utility model below in conjunction with embodiment and accompanying drawing.

Fig. 1: structural drawing of the present utility model;

Fig. 2: A-A sectional view;

Fig. 3: B-B sectional view;

Fig. 4: face cam unfolded drawing;

Fig. 5: flap structural drawing.

As shown in the figure, on-off valve described in the utility model is by valve body 1, flap 2, valve flap translational mechanism and flap rotating mechanism are formed, be provided with import 3 in the valve body, outlet 4 and the valve seat 5 that is located at outlet end, valve flap translational mechanism is by the screw axis 6 that is sleeved in the valve body 1, threaded axle 6 screw-thread fit also are provided with the nut 8 of shift fork 7, the face cam 10 of band driving lever 9, be located at the square groove 12 of rotatingshaft 11 lower ends that are set in valve body 1 and be located on the flap 2 and and form with the slide block 13 that square groove 12 is slidingly matched, wherein shift fork 7 is connected with driving lever 9, the endoporus of face cam 10 with the cylndrical surface in valve seat 5 outsides movingly, 14 arc-shaped curved surfaces 16 that are located at the pushing block 15 on the flap 2 together of the cam face of face cam 10 contact, and the flap rotating mechanism is by the driving gear 17 of threaded axle 6 screw-thread fit, be located at the driving gear rising stop platform 18 of screw axis 6 upper ends and be located on the rotatingshaft 11 and and form with the driven gear 19 of driving gear 17 engagements.Aspect structural design, valve body 1 adopts split type structure; The sealing surface shape of valve seat 5 can design according to known structural type, and present embodiment adopts conical seal (contact) face, and the sealing surface shape on the flap 2 should adapt with the sealing surface shape on the valve seat 5, and present embodiment is selected spherical shape for use, and forms linear sealing with valve seat 5; Upper and lower two cover slide block 13 and the pushing blocks 15 of flap 2 design, bottom slide block 13 is slidingly matched with square grooves 12 down, and following square groove 12 then is located at the axis hole on the valve body movingly and on the following rotatingshaft 20 with rotatingshaft 11 coaxial lines; The axial seal structure of screw axis 6 and rotatingshaft 11 has multiple structural type, and present embodiment adopts filler to compress sealing; In addition, the driven gear 19 of present embodiment is a tooth sector, to reduce gear-driven physical dimension; The same with known on-off valve, to be provided with the pipe fitting connection structure connecting in import 3 and outlet 4 places, as flange or screw thread or bevel for welding etc.For the drive unit of screw axis (6), can be designed to hand-drive or motivational drive, motivational drive comprises that electricity, liquid, gas drive are moving.Present embodiment is designed to handwheel 21 with drive unit, and hand wheel shaft 22 threaded axle 6 keys connect, and matching thread and the driving gear rising stop platform 18 of screw axis 6 with driving gear 17 is arranged on the hand wheel shaft 22.

Claims (1)

1, a kind of on-off valve, it is characterized in that: by valve body (1), flap (2), valve flap translational mechanism and flap rotating mechanism are formed, be provided with import (3) in the valve body (1), outlet (4) and be located at the valve seat (5) of outlet end, valve flap translational mechanism is by the screw axis (6) that is sleeved in the valve body (1), threaded axle (6) screw-thread fit also is provided with the nut (8) of shift fork (7), the face cam (10) of band driving lever (9), be located at the square groove (12) of rotatingshaft (11) lower end that is set in valve body (1) and be located at the slide block (13) that flap (2) is gone up and same square groove (12) is slidingly matched and form, wherein the same driving lever of shift fork (7) (9) is connected, the cylndrical surface in the same valve seat of endoporus (5) outside of face cam (10) movingly, the cam face (14) of face cam (10) then contacts with the arc-shaped curved surface (16) that is located at the pushing block (15) on the flap (2), and the flap rotating mechanism is by the driving gear (17) of threaded axle (6) screw-thread fit, be located at the driving gear rising stop platform (18) of screw axis (6) upper end and be located at the driven gear (19) that rotatingshaft (11) is gone up and same driving gear (17) meshes and form.

Images