CN1206802A

CN1206802A - Cutting valve

Info

Publication number: CN1206802A
Application number: CN 97116003
Authority: CN
Inventors: 吴雅颂
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-25
Filing date: 1997-07-25
Publication date: 1999-02-03
Anticipated expiration: 2017-07-25
Also published as: CN1095959C

Abstract

The shear valve for controlling, regulating and distributing pipeline fluide flow rate is characterized by that in the valve body there are two flat dampers, one of them is fixed in the valve body, and another circular movable damper is aligned with central hole of the fixed damper by means of optical axis, and is series-connected with the fixed damper, and the circular movable damper can be turned round the axial contre of optical axis. These two dampers are equipped with different flow-through holes on their surfaces respectively, and these flow-through holes can be coincided or staggered according to the requirements so as to can utilize the coincided or staggered hole position to regulate fluid flow rate. Said invention is convenient for closing and opening, has no need of rubber sealing ring and possesses good tightness, its cost is low, it is suitable for conveying high-temp., high-pressure, acid and alkali media.

Description

Cut valve

The present invention relates to a kind ofly to be used for controlling, the valve of adjusting and distribution duct fluid flow, especially can be used in control and the fluid flow of regulating High Temperature High Pressure, acid-alkali medium and arbitrary diameter pipeline, good seal performance, simple in structure, open-close convenient quick, the cost of material is low cuts valve.

At present, a kind of known gate valve is arranged, rely on rotation hand wheel to come landing flashboard controlling plumbing fixtures flow, can mate large-diameter pipeline, resistance is little.But this valve volume is tall and big, heavy, and flashboard must be used the non-ferrous metal manufacturing, the cost height.By flashboard periphery and rubber seal contact seal, seal ring is hit the invasion and attack of soda acid impurity in pressure and the fluid for a long time, easily aging distortion, sealing is failed lastingly, fluid leaks easily, and incompatibility pipeline gas and high-temperature, high pressure fluid are carried, and is only permitted the standard-sized sheet full cut-off in the practical application, do not allow to do throttling usefulness, and keying is wasted time and energy.Also has a kind of known butterfly valve, the unlatching moment of torsion is little, and the coupling caliber is big, and volume is little, flashboard vertically rotates 90 ° along center line and can open and close, lightly laborsaving, but in service permitted the standard-sized sheet full cut-off, do not allow to do throttling and use, the incompatibility high-temperature, high pressure fluid, by flashboard circumference and rubber seal contact seal, the easily aging distortion of rubber seal is easy to generate leakage.In addition, pipe stream engineering also often runs into following situation: heavy caliber main pipe is branched into the branch pipe(tube) more than two, and for the ease of maintenance and flow, each arm must serial connection one deck valve door, and the expense of taking a lot of work expects that opening/shutting valve is also comparatively loaded down with trivial details.

The purpose of this invention is to provide a kind of scissors valve, the pipeline that can mate arbitrary diameter can be carried the various fluids that comprise gas and High Temperature High Pressure, soda acid, and is simple in structure, volume is little, in light weight, laborsaving quick during keying, the sealing position is not provided with seal ring, substitute the line segment sealing of conventional valve with plane sealing, and good seal performance is dammed, throttling and flow and usefulness, and cost is also low.On the pipe stream engineering, a heavy caliber main pipe is branched into two branch pipe(tube)s, only needs to cut valve in two joining of crotch serial connection, and two deck valve doors in promptly alternative two arms are saved threeway of crotch again.Control is two joins the keying of cutting valve, can dam to two arms, throttling and flow.There are two polygamies of cutting valve, one-pipe butt joint multitube road of joining of cutting valve, one-pipe butt joint twin flue singly joining of one-pipe butt joint one-pipe to cut valve.

The object of the present invention is achieved like this: valve body is formed in the end face of flange butt joint by main valve body, auxiliary valve body.In valve body, fixedly flashboard around be fixed in the valve body, the central shaft hole of circular movable flashboard is connected in series with the light axle bolt with the fixing central shaft hole of flashboard, fit mutually in its two plane.Handwheel is connected with valve rod outside valve body, and the valve rod the other end stretches into body cavity and is connected with the circular cone umbrella gear, circular cone umbrella gear and the circular cone tooth row quadrature engagement that is installed on the movable flashboard circumference.Rotate handwheel, by transmission, movable flashboard is just pasting fixedly flashboard and along the central shaft hole rotation.Different purposes cut valve, have position symmetry and asymmetric flowing hole or assignment hole on its two shoe brakes board plane, its hole different.Singly join the main valve body overcurrent chamber of cutting valve and be the single hole road, two join cut valve be double hole channel, polygamy to cut valve be not connected between porous road, the duct, each duct is connected as a single entity with the flowing hole that goes out manifold flange separately.When the rotary moveable flashboard, when making the flowing hole of two shoe brake plates relative, then for cutting the opening of valves overcurrent, Kong Yukong staggers then for closing, and half-open semi-closure then is throttling, and the assignment hole of movable flashboard then is a flow facing to the fixing a certain flowing hole of flashboard.The applying that relies on the high plane of straightness is as sealing surface, and fluid adsorption is at two interplanars, and both lubricate was again one tight water seal, had improved sealability, reach dam, the purpose of throttling and flow.

Owing to adopt such scheme, cutting valve relies on two shoe brake board planes to fit, rotate along central shaft and to control inflow-rate of water turbine, simple in structure, open-close convenient is quick, and sealing is tight lasting, and flashboard only bears the static pressure from movable flashboard direction fluid, high temperature high voltage resistant, do not have wearing and tearing, few fault, not corrosion, dam in the enforcement, throttling and flow and usefulness.

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 singly joins to cut the fixedly front view of flashboard of valve.

Fig. 2 singly joins the front view of cutting the movable flashboard of valve circle shape.

Fig. 3 singly joins the longitudinal section tectonic maps of cutting valve embodiment.

Fig. 4 cuts the fixedly front view of flashboard of valve two joining.

Fig. 5 is two front views of cutting the movable flashboard of valve of joining.

Fig. 6 cuts the front view that valve goes out manifold flange two joining.

Fig. 7 is two longitudinal section tectonic mapss of cutting valve embodiment of joining.

Among the figure 1. screws, 2. central shaft holes, 3. flowing holes, 4. circular cone tooth rows, 5. circular cone umbrella gear, 6. valve rods, 7. handwheels, 8. bolts, 9. auxiliary valve bodies, 10. influent stream flanges, 11. auxiliary valve body flanges, 12. main valve body flanges, 13. movable flashboards 14. fixedly flashboard 15. fixing bolts 16. optical axis bolts 17. main valve bodies 18. go out 20. pairs in manifold flange 19. overcurrent chambeies and allot manifold flange 21. flange flowing holes 22. assignment holes

In Fig. 1, Fig. 2, singly joining the fixedly flashboard (14) of cutting valve has central shaft hole (2) with movable flashboard (13) circular flat.With central shaft hole (2) is the center, and it is fan-shaped that the plane of two shoe brake plates is divided into idol, all non-conterminous fan-shaped in even Fabric position symmetry, flowing hole (3) that shape is identical, the shape in hole has circle, ellipse, trapezoidal, fan-shaped, triangle and polygonal.The plane straightness height of flashboard, fixedly flashboard (14) periphery has screw (1), and the circular cone tooth row (4) of circular arc is housed on movable flashboard (13) circumference.

In the embodiment shown in fig. 3, fixedly flashboard (14) is fastened on the interior resonator end surface of main valve body (17) by bolt (8), and fixedly flashboard (14) periphery and main valve body (17) the seamless connection of interior resonator end surface guarantee that fluid does not leak from the joint.(16) one on optical axis bolt is locked at fixedly on flashboard (14) central shaft hole (2), and the central shaft hole (2) of movable flashboard (13) is inserted in optical axis bolt (16) other end, connects movingly.Be to reduce the flow resistance of body cavity and the space that makes progress, the plane after two shoe brake plates are fitted not with vertical, the inclination several angle of shaft axis of influent stream flange (10); For ease of two shoe brake plates are installed, main valve body flange (12) and auxiliary valve body flange (11) contact end face also with influent stream flange (10) shaft axis out of plumb, the both ends of the surface Butt sealing is locked by bolt (8).Handwheel (7) is connected with valve rod (6) outside valve body, and valve rod (6) the other end inserts main valve body (17) inner chamber and is connected with circular cone umbrella gear (5), and valve rod (6) must guarantee that fluid does not leak in the gap movingly with main valve body (17).Rotate handwheel (7), valve rod (6) rotates with circular cone umbrella gear (5) thereupon, circular cone umbrella gear (5) and circular cone tooth row (4) the quadrature engagement that is installed on movable flashboard (13) circumference, circular cone tooth row (4) is promptly made circumference and is rotated, and movable flashboard (13) is pasting fixedly flashboard (14) thereupon and rotating around optical axis bolt (16).Two shoe brake board planes have position symmetry, flowing hole (3) that shape is identical, when the whole flowing holes of two shoe brake plates (3) are superimposed, are the valve opening overcurrent; Movable flashboard (13) flowing hole (3) and fixing flashboard (14) flowing hole (3) are when staggering fully, for valve closing dams; Flowing hole (3) is valve throttle when partial cross section is superimposed.Cut applying that valve relies on two straight smooth flat as sealing surface, fluid adsorption is at two interplanars, existing lubrication, and it is laborsaving quick that handwheel is rotated, and is again one tight water seal, improved sealability.Singly joining main valve body (17) the overcurrent chamber (19) of cutting valve is the single hole road, the duct with go out manifold flange (18) flowing hole (21) and be connected as a single entity.The flashboard Manufacturing material adopts stone material, pottery, ceramet, glass, glass fibre reinforced plastics, plastics and other nonmetallic heat-resistant, wear-resistant corrosion resistant material except that metal, both reduced cost, and increases hardness, and not yielding again corrosion can prolong service life of valve.Singly join the long-pending summation of flashboard flowing hole (3) overflow section of cutting valve, more than or equal to cutting the valve influent stream or going out the sectional area of manifold flange flowing hole (21).

In Fig. 4, Fig. 5, fixedly on flashboard (14) center line, two flowing holes (3) that the cross section is identical are arranged; On movable flashboard (13) center line except that two with fixing flashboard (14) relative, the equiform flowing hole in position (3), also have the identical assignment hole (22) of shape in the middle of its two hole, the shape of flowing hole and assignment hole has circle, ellipse, trapezoidal, fan-shaped, triangle and polygonal.Two shoe brake plates all have central shaft hole (2), and fixedly flashboard (14) periphery has screw (1).It is smooth that the plane of two shoe brake plates is straight, is furnished with the circular cone tooth row (4) of circular arc on movable flashboard (13) circumference.

In Fig. 6, going out manifold flange (18) has two circular flowing holes (21), and flowing hole (21) is connected as a single entity with the overcurrent chamber (19) of main valve body (17), the even cloth screw (1) of two flange flowing holes (21) periphery.

In Fig. 7, fixedly the inflow port kissing of overcurrent chamber (19) double hole channel in (14) two flowing holes of flashboard (3) and the main valve body (17) connects, and the head piece that goes out of double hole channel then fuses with two manifold flanges (20) of allotting, and is not connected between two ducts.Fixedly the assembling of flashboard (14), movable flashboard (13), handwheel (7), valve rod (6), circular cone umbrella gear (5), circular cone tooth row (4) and auxiliary valve body (9) structure, assembling are identical with Fig. 3 embodiment for they.The flowing hole (3) and the asymmetric assignment hole in position (22) of position symmetry are arranged on the two shoe brake board planes, and the shape in hole is any.When rotating handwheel (7), drive valve rod (6) and circular cone umbrella gear (5) rotation, the circular cone tooth row (4) of circular arc is promptly made circular movement along central shaft hole (2), when the time comes, movable flashboard (13) flowing hole (3) is that two expenditure stream pipelines are opened flow simultaneously if whole when superimposed with fixing flashboard (14) flowing hole (3); Flowing hole (3) is two expenditure stream pipeline throttlings when part is superimposed; Movable flashboard (13) assignment hole (3) is when fixedly certain flowing hole of flashboard (14) (3) is superimposed, for one-pipe overcurrent, another branch pipe(tube) dam; Two joining cut the single flowing hole of valve (3) sectional area more than or equal to cutting the sectional area that valve goes out the single flowing hole of manifold flange (20) (21), and sectional area summation during each flowing hole (3) full open is more than or equal to the sectional area in influent stream flange (10) hole.

Claims

1. cut valve for one kind, become valve body by main valve body with auxiliary valve body end face of flange Butt sealing, valve into and out of head piece flange is arranged respectively, handwheel is connected with valve rod outside valve body, the valve rod the other end inserts body cavity and is connected with the circular cone umbrella gear, it is characterized in that: in valve body, fixedly flashboard is fastened on the body cavity end face all around, the center hole of circular movable flashboard is connected in series with the light axle bolt with the fixing center hole of flashboard, and is porose on the two shoe brake board planes.

2. the valve of cutting according to claim 1 is characterized in that: the shaft axis out of plumb that contacts end face and influent stream flange of main valve body and auxiliary valve body flange.

3. the valve of cutting according to claim 1, it is characterized in that: fixedly interior resonator end surface is seamless is connected for flashboard periphery and main valve body, one on optical axis bolt is locked at fixedly on the flashboard central shaft hole, and the central shaft hole of movable flashboard is inserted in optical axis bolt other end, connects movingly.

4. the valve of cutting according to claim 1 is characterized in that: the circular cone tooth row of circular arc is housed, circular cone umbrella gear and the engagement of circular cone tooth row quadrature on the movable flashboard circumference.

5. according to claim 1 or the described valve of cutting of claim 3, it is characterized in that: movable flashboard and fixedly flashboard two planes applying, two planes of applying are straight, and the applying plane not shaft axis with the influent stream flange is vertical.

6. according to claim 1 or the described valve of cutting of claim 3, it is characterized in that: position symmetry and asymmetric flowing hole, assignment hole are arranged on movable flashboard and the stepping brake board plane, and the shape in its hole has circle, ellipse, trapezoidal, fan-shaped, triangle, polygonal.

7. according to claim 1 or the described valve of cutting of claim 3, it is characterized in that: the flashboard Manufacturing material adopts metal, rock, pottery, ceramet, glass, glass fibre reinforced plastics, plastics.

8. the valve of cutting according to claim 1 is characterized in that: there is the single hole road in main valve body overcurrent chamber, double hole channel is arranged, the porous road is arranged, and is not connected between the duct, and each duct is connected as a single entity with the flowing hole that goes out manifold flange.

9. the valve of cutting according to claim 1 is characterized in that: the overflow section of flashboard flowing hole amasss summation, equals the sectional area of influent stream flange flowing hole.