CN2038980U - New diaphragm type stop valve - Google Patents

Abstract

The utility model discloses a valve, in particular to a diaphragm type stop valve which manually operates small torque or manipulates start-stop at a remote distance through conveyed fluid with pressure, overcoming the major defects of common stop valves, electromagnetic valves, motor-operated valve and diaphragm valves. The utility model has the advantages of convenient operation, simple structure, compactness, good tightness, long service life and low cost. The control technology of flow channel hole is adopted, and the start-stop of the main flow channel of a valve gate is controlled by a small hand wheel directional valve or an electromagnetism directional valve on the flow channel hole, so that remote manipulation and automatic control can be easily realized. The external appearance of the valve gate is peculiar, and the valve can be made into a valve gate of big specification with nominal size of more than Dg 80 mm. The utility model can be used for water, vapor and other fluid media with low degree of viscosity.

Description

New diaphragm type stop valve

The utility model relates to a kind of stop valve, is contained on the pipeline, uses as opening and closing the pipeline flowing medium.

In prior art, handwheel is all rotated in the keying of common stop valve, drives the upper and lower motion of valve rod, makes valve opening and closing.Along with the increase of inside nominal diameter, the handwheel diameter is generally bigger, and moment of rotation is also very big, rotates difficulty during keying, more can't realize long-distance remote control; Though solenoid valve can long-range control, electromagnetic coil, one is little because of loading, two because of should not being in conduction state for a long time, so latus rectum less (＜Dg100), can not be used for normal open system; Though the electrodynamic type stop valve can solve remote operation and Chang Kai, normally closed problem, the overall sizes of electric valve is big and stupid, and electric load is also bigger, and manufacture cost is very high; The keying of existing membrane valve is by the lifting of handwheel rotation valve rod or establish gas distribution station, comes opening/shutting valve with air pressure, but still can not realize that remote operation or allocation of facility are huge.

The purpose of this utility model is to make a kind of improved diaphragm type stop valve.This valve, the power source that the flowing medium that utilization is carried is done not only has manual little moment and opens and closes small-bore runner hole Lai Guan.The function of logical big latus rectum sprue, and can remote operation, remote control opens and closes; Both can be used for normally closed system, also can be used as normal open system, if only join the small handwheel directional control valve, then can replace existing common stop valve, if assembling handwheel directional control valve and electromagnetic direction valve, then but hand---electricity is dual-purpose, realize little moment and remote operation and control automatically, the utility model also has profile novelty, uniqueness, simple and compact for structure, good seal performance, long service life, characteristics such as cost is low, because moment of rotation is very little, so handle very conveniently, laborsaving, general old weak person all can rotate handwheel like a cork and open and close this valve.

The main points of the utility model diaphragm type stop valve make the following instructions: the both sides design on diaphragm type stop valve valve body (1) and valve gap (2) has 3 runner holes (19,23,21), two runner holes (19 wherein, 23) communicate with valve inlet, a runner hole (21) communicates with valve outlet port, device one special spool device in one of them the runner hole that communicates with valve inlet, and the structure of this spool device is: small handwheel (11) is enclosed within on the valve rod (13) of left hand screw; Hinged flap (15) under the valve rod, sealing gasket (16) is housed below the flap, O RunddichtringO (14) is equipped with on flap top, spool is in the intersection in the runner hole of three directions, vertical run hole (19) communicates with valve inlet pressure flow body medium, horizontal upper runner hole (10) links to each other with valve outlet port runner hole (21), horizontal lower flow channel hole (9) leads to into barrier film pressure chamber (7), when the rotation of handwheel clockwise direction, when moving upward to stop by valve rod drive flap, the O RunddichtringO and the conical surface are close to, and have sealed horizontal upper runner hole, have opened the vertical run hole, make pressure fluid enter pressure chamber, promote barrier film and flap and move downward, realize blocking sprue (20), the purpose of throttle down.When handwheel is rotated counterclockwise when moving downward to stop, the vertical passage bore closure, horizontal upper runner hole is communicated with the pressure chamber, the rapid release of pressure fluid in the pressure chamber, simultaneously, the pressure fluid medium of valve inlet sprue promotes flap and rises, thus Open valve, when this special spool is set, can install the direction control electromagnetic valve of a two-position three way in addition; Wherein: once runner hole (23) logical valve inlet pressure fluid, one opening (21) that stimulates the menstrual flow links to each other with valve outlet port, another general rule is gone into the pressure chamber through runner hole (24), under interchange or the effect of direct solenoid field boundary, play above-mentioned manual little moment equally and open and close the effect that logical big latus rectum sprue is closed in small-bore runner hole.Two through holes that the electromagnetism position control valve links to each other with valve inlet, valve outlet port respectively connect according to the difference of the working state (Chang Kai or normally closed) of diaphragm type stop valve on the contrary.The runner hole into and out of partly, other is equipped with one-way valve (18,22), when valve inlet release and valve outlet port supercharging, can prevent pressure chamber's release and supercharging, causes the valve misoperation.

This improved diaphragm type stop valve, more more superior than existing stop valve and membrane valve, mainly show: the one, the moment that opens and closes bigbore sprue is little, handwheel is little; The 2nd, configuration direction control electromagnetic valve has realized the long-distance remote control manipulation; The 3rd since with institute's conveyance fluid medium as power source, make simple in structure, with existing stop valve, mortor operated valve relatively, the bulk compactness.

This diaphragm type stop valve can be made into inside nominal diameter greater than the various big specification valves of Dg80 millimeter, during pressure can be, low pressure, can be used as controls such as water, vapour, low viscous other flowing medium valve, also the subregion valve of suitable automatic water jetting fire-fighting system.

Enforcement legend of the present utility model:

The diaphragm type stop valve schematic representation of Fig. 1, the remote-controlled keying of little moment

Fig. 2, handwheel directional control valve schematic representation

Claims (2)

1, a kind of valve, a kind of especially new types of diaphragm formula stop valve of providing the remote-controlled keying of the little moment of fluid for oneself, it is pressure chamber (7) by valve body top, barrier film (3), flap (5), sealing gasket (4), valve body (1), valve gap (2), valve seat (8), and two position three-way valve (11～16,6) composition, it is characterized in that: the both sides design on valve body (1) and valve gap (2) has three runner holes (19,23,21), wherein two runner holes (19,23) communicate with valve inlet, a runner hole communicates with valve outlet port, on one of them top, runner hole (19) that communicates with valve inlet handwheel directional control valve (11～16) is housed, and links to each other with valve outlet port with pressure chamber (7) respectively with (10), simultaneously through runner hole (9), at valve gap (2) upper unit two-position three way direction control electromagnetic valve (6) is arranged, once runner hole (23) logical valve inlet pressure fluid, the runner hole (21) of stimulating the menstrual flow links to each other with valve outlet port, and another general rule is gone into the pressure chamber through runner hole (24).

2,, it is characterized in that the small handwheel (11) of said handwheel directional control valve is enclosed within on the valve rod (13) of left hand screw according to the described new types of diaphragm stop valve of claim 1; Hinged flap (15) under the valve rod, sealing gasket (16) is housed below the flap, O RunddichtringO (14) is equipped with on flap top, the handwheel directional control valve is in the intersection in the runner hole of three directions, vertical run hole (19) communicates with valve inlet pressure flow body medium, horizontal upper runner hole (10) links to each other with valve outlet port runner hole, and horizontal lower flow channel hole (9) leads to into pressure chamber (7).