CN2534433Y

CN2534433Y - Internal dynamic valve

Info

Publication number: CN2534433Y
Application number: CN 02213935
Authority: CN
Inventors: 朱建文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-15
Filing date: 2002-04-15
Publication date: 2003-02-05
Anticipated expiration: 2012-04-15

Abstract

An inner power valve is a valve that water, gas and oil flow through. The inner power valve is divided into an upper chamber and a lower chamber. A valve port is arranged between the upper chamber and the lower chamber. A valve inlet is arranged in the upper chamber. A valve outlet is arranged in the lower chamber. A valve cover is arranged on the valve body. The utility model is characterized in that a pre action valve stem connected to the turning wheel on the valve cover is extended into the upper chamber of the valve body. The lower end of the pre action valve stem is connected to the pre action valve spindle. A servo valve spindle is arranged under the pre action valve spindle, which slides upward and downward in the upper chamber of the valve body. The advantage is that the structure is more simple and rational. The inner power valve is an action amplifier, the hand wheel is operated only by less strength and action, the opening and closing of the inner power valve are controlled. The operation is more simple, energy saving and convenient. The sealing effect is good, which solves the problem of inner leakage; The utility model has perfect adjusting performance; The overall dimension is small, the material is saved, which facilitates the installation; Because no spring of the traditional valve is arranged in the inner power valve, the reliability of the action is ensured and the service life is prolonged.

Description

Internal dynamic valve

(1) technical field

But the utility model relates to the improvement of the valve mechanism of a kind of water flowing, vapour, wet goods medium, can replace valves such as common stop valve, gate valve, is a kind of Internal dynamic valve specifically.

(2) background technique

In worker, agricultural production, transportation and the daily life, valve is used widely.Stop valve and gate valve are to use maximum valves.The major defect that exists is that driving torque is big, and no matter particularly relatively large number valve is electronic or manually, operation is effort all very.Not only will expend bigger muscle power and electric energy, even more serious is under emergency, can not in time close, and causes various accidents.For example, water can not be in time gone up, overtemperature will be caused when boiler water shortage; Water can not be in time reduced or stop to go up when the water level height, superpressure will be caused; Toxic and harmful leaks and can not in time close, and consequence is hardly imaginable especially.The run, drip, leak phenomenon of existing valve can not overcome always in addition, because steam valve leaks, makes the heat energy utilization rate descend 10% according to statistics; Because valve leak produces system's cisco unity malfunction, pollutes problems such as working environment.

(3) summary of the invention

The utility model purpose is to overcome the shortcoming in the above-mentioned technology, proposes a kind of Internal dynamic valve, replaces existing valve, when making its operation, reduces driving moment, and makes good sealing effect.

The utility model purpose is realized by following technological scheme: this Internal dynamic valve, valve body is divided into epicoele and cavity of resorption, between epicoele and the cavity of resorption valve port is arranged, epicoele has valve inlet, and cavity of resorption has valve outlet port, and valve gap is arranged above the valve body, the pre-ovable valve stem that it is characterized in that being positioned at the runner connection on the valve gap stretches into the valve body epicoele, pre-ovable valve stem lower end connects pre-movable valve plug, below the movable valve plug servo-actuated spool is arranged in advance, slides up and down in the valve body epicoele.

The shape of servo-actuated spool be top peripheral diameter greater than following diameter, the gap of cavity wall is the 0.3-3 millimeter on top periphery and the valve body, the middle part is recessed, the center of bottom surface is porose.

The bottom surface of servo-actuated spool, can cover valve port when the servo valve core cap is on valve port fully greater than the valve port in the valve body.

The outside thread of pre-ovable valve stem is connected with the internal thread of pre-movable valve plug, and pre-movable valve plug top cross section is square or polygonal, is stuck in the square or polygonal hole of valve gap, and pre-movable valve plug can only move up and down, and can not rotate.Work as rotating wheel, drive pre-ovable valve stem and rotate together,, can only move up or down because pre-movable valve plug does not rotate.

In the time the Internal dynamic valve that is in closed condition will being opened, rotate handwheel or transmission device, pre-movable valve plug moves up, the pre-activity opening of valves, the aperture on the servo-actuated spool that is covered by the pre-activity spool was opened originally, and by pressure release, pressure reduces in the B chamber, servo-actuated spool top.Pressure below the servo-actuated spool in the A chamber is greater than the pressure in the B chamber, servo-actuated spool top, and the servo-actuated spool moves upward, and Internal dynamic valve is opened.When servo-actuated spool during near pre-movable valve plug, because gapped leakage current between the cavity wall on servo-actuated spool periphery and the valve body makes the increased pressure in the B chamber, when pressure difference in pressure in the A chamber and the B chamber and servo-actuated spool weight balancing, the stop motion of servo-actuated spool.When if this Internal dynamic valve level is installed, the pressure in the A chamber when pressure in the B chamber equates, the stop motion of servo-actuated spool.

When Internal dynamic valve was in opening state, backward rotation handwheel or transmission device moved downward pre-movable valve plug, and the pressure in the B chamber further raises, and the servo-actuated spool moves downward, until closing.After closing, the pressure in the A chamber is greater than the pressure in the C chamber, and Internal dynamic valve produces the selfsealings effect, and promptly pressure reduction is big more, and sealing force is big more, and sealing effect is good more.This has just solved interior leakage problem at all.

The utility model advantage is that structure is simple more, reasonable, Internal dynamic valve is an action amplifier, as long as with less strength and motion action handwheel or transmission device, make pre-ovable valve stem action, and then pre-movable valve plug is moved, the opening and closing of Internal dynamic valve have been controlled in the action of servo-actuated spool, make operation simpler, laborsaving, convenient; Good sealing effect has solved the problem of interior leakage; Because the servo-actuated spool follows the tracks of pre-movable valve plug all the time, can both stable operation in aperture position arbitrarily, have good adjusting function; Boundary dimension is little, and economical with materials is convenient to install; Owing to there is not the spring of general valve in the Internal dynamic valve, guaranteed the reliability of action, prolonged working life.

(4) description of drawings

Fig. 1 is a kind of Internal dynamic valve structural representation,

(5) embodiment, accompanying drawings

This Internal dynamic valve, valve body 1 is divided into epicoele and cavity of resorption, between epicoele and the cavity of resorption valve port is arranged, and epicoele has valve inlet, and cavity of resorption has valve outlet port.Valve gap 2 is arranged above the valve body 1, the pre-ovable valve stem 4 that handwheel 3 on the valve gap 2 connects stretches in valve body 1 epicoele, the pre-ovable valve stem 4 lower ends pre-movable valve plug 5 that is threaded, and cross section is square or polygonal on the pre-movable valve plug 5, be stuck in the square of valve gap 2 or the polygonal endoporus, can not rotate.Below the pre-movable valve plug 5 servo-actuated spool 6 is arranged, with cavity wall gap on the valve body be the 0.3-3 millimeter.

Claims

1, a kind of Internal dynamic valve, valve body is divided into epicoele and cavity of resorption, between epicoele and the cavity of resorption valve port is arranged, epicoele has valve inlet, and cavity of resorption has valve outlet port, and valve gap is arranged above the valve body, it is characterized in that being positioned at the pre-ovable valve stem that handwheel on the valve gap or transmission device connect and stretch into the valve body epicoele, pre-ovable valve stem lower end connects pre-movable valve plug, below the movable valve plug servo-actuated spool is arranged in advance, slides up and down in the valve body epicoele.

2, according to the described Internal dynamic valve of claim 1, the shape that it is characterized in that the servo-actuated spool be top peripheral diameter greater than following diameter, the gap of cavity wall is the 0.3-3 millimeter on top periphery and the valve body, the middle part is recessed, the center of bottom surface is porose.

3, according to claim 1 or 2 described Internal dynamic valves, the bottom surface that it is characterized in that the servo-actuated spool, can cover valve port when the servo valve core cap is on valve port fully greater than the valve port in the valve body.

4, according to the described Internal dynamic valve of claim 1, it is characterized in that the outside thread of pre-ovable valve stem is connected with the internal thread of pre-movable valve plug, the last cross section of pre-movable valve plug is square or polygonal, is stuck in the square opening or polygonal hole of valve gap.