CN2130969Y

CN2130969Y - Stop valve

Info

Publication number: CN2130969Y
Application number: CN 92210105
Authority: CN
Inventors: 杨树蔚
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-20
Filing date: 1992-01-20
Publication date: 1993-04-28
Anticipated expiration: 2002-01-20

Abstract

The utility model discloses a stop valve, which comprises a valve body 1, a valve cover 6, a switch executive mechanism, a control assembly and a seal assembly. An electric magnet or a manual handle controls the opening and close of the main valve by the pressure of the inlet of the pipe from the side way; the power is saved. The utility model has the advantages of small size, light weight, on-off quickly, uneasy leakage and corrosion resistance, which is suitable for pipelines and oil tanks in industry and the cutting-off passages of various tanks for gas and fluids.

Description

Stop valve

The utility model relates to a kind of shutoff valve, and it belongs to a kind of opens when a side overvoltage, the equilibrium valve of closure when a side pressure is not enough, and it includes valve body, valve gap, switch actuator and control unit.

The various wet tanks major parts of domestic industry pipeline and oil tank adopt ball valve and gate valve at present, these two kinds of valves have included valve body, valve gap, switch actuator and control unit, and these two kinds of valve volumes are all big, body weight and cost height, wherein the gate valve switch time long, the ball valve switch power is big.

The purpose of this utility model provides the shutoff valve that a kind of volume is little, in light weight, switch is laborsaving, can open rapidly.

The purpose of this utility model is achieved in that the unlatching of valve is to realize by the lifting that control unit is adjusted flap 2 from dypass with inlet pressure, it comprises valve body 1, valve gap 6, the two is connected switch actuator and control unit by bolt 8 with nut 9, its special way is that it also includes black box, form by valve seat 3, flap 2, valve seat 3 and flap 2 match, assurance valve safety when closing is passed through by fluid, valve seat 3 internal diameters are less than or equal to the discrepancy bore of valve body 1, a pressure drop are arranged after making fluid flow through valve seat bore when valve opening; The utility model control unit has one group at least, every group of control unit by control valve plug 5, the valve piston base of dividing into, electromagnet 7(or) and form 10, valve piston base is in the top or the bottom of lining 4 side opening end faces, link to each other 10 with control valve plug 5, the end face of control valve plug 5 matches with through hole, available 10 Open valves at the scene, but also distant control electromagnet 7 Open valves; Switch of the present utility model actuator comprises flap 2, lining 4 and valve gap 6, flap 2 and lining 4 are slidingly matched, a little hand-hole and big portalling are set in the flap 2 at least, flap 2 is that the flange footpath is greater than barrel-shaped flap lower end diameter (as Fig. 1) for flanged bucket suitable for reading, or be innerspring straight bucket (as Fig. 2), be on the flap, lower end diameter equates, leave the fluid passage between flap 2 and the lining 4, the through hole that matches with control valve plug 5 end faces is connected, during by control valve plug 5 Open valves, fluid flows into from the hand-hole of flap 2, influx is few, and it is many to flow into the flow of the side opening on the lining 4 from big outlet, flap 2 since the area on top greater than the bottom area, or in the flap 2 spring is housed, when upper pressure is opened less than the pressure flap of lower end, control valve plug 5 cuts off the path of the big outlet of side opening on the linings 4 and flap 2 in the time of need closing, fluid flows into the upper end portion of flap 2 from little inlet, because it is last, the lower end surface product moment makes goes up end pressure greater than following end pressure, the effect of this pressure reduction or flap 2 weight makes flap cut off fluid passage, or by acting force of the spring, on flap, throttle down when downforce equates.

The utility model compared with prior art, but have volume little in light weight, switch is laborsaving, the advantage of the fast far and near distance control valve of valve opening speed.

Description of drawings:

Fig. 1 is a flange flap type shutoff valve schematic representation

Fig. 2 is a built-in spring flap type shutoff valve schematic representation

Control unit of the present utility model and switch actuator can be along 0 °～60 ° of axis tilts.Switch actuator of the present utility model and control unit can be provided with gate valve top and replace oil hydraulic cylinder.

Claims

1, a kind of shutoff valve, it includes valve body 1, valve gap 6, switch actuator and control unit, it is characterized in that it also includes black box, is made up of valve seat 3 and flap 2, valve seat 3 and flap 2 match, and the internal diameter of valve seat 3 is less than or equal to the discrepancy bore of valve body 1; Control unit of the present utility model has one group at least, every group of control unit by control valve plug 5, the valve piston base of dividing into, electromagnet 7 and (or) form 10, valve piston base links to each other 10 with control valve plug 5 in the top or the bottom of lining 4 side opening end faces, and the end face of control valve plug 5 matches with through hole; Switch of the present utility model actuator comprises flap 2, lining 4 and valve gap 6, flap 2 and lining 4 are slidingly matched, a little hand-hole and big portalling are set in the flap 2 at least, flap 2 is flanged bucket suitable for reading, be that the flange footpath is greater than barrel-shaped flap lower end diameter, leave the fluid passage between flap 2 and the lining 4, the through hole that matches with control valve plug 5 end faces is connected.

2, shutoff valve according to claim 1, it is characterized in that it switch actuator and control unit along 0 °～60 ° angles of axis tilt.

3, shutoff valve according to claim 1 is characterized in that its switch actuator and control unit are arranged on gate valve top.

4, shutoff valve according to claim 1 is characterized in that described flap 2 is an innerspring straight bucket.