CN2515469Y

CN2515469Y - Electromechanical control valve

Info

Publication number: CN2515469Y
Application number: CN 01277308
Authority: CN
Inventors: 宋莲菁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-19
Filing date: 2001-12-19
Publication date: 2002-10-09
Anticipated expiration: 2011-12-19

Abstract

An electromechanical control valve comprises a valve body, a water inlet port and a water outlet port, wherein the valve body is provided with a horizontal valve port which is provided with a sealing ceramic valve core which comprises a positioning copper sleeve, a lower body of the ceramic core, an upper body of the ceramic core and a shifter yoke connected with the upper body of the ceramic core. The ceramic valve core is connected to power transmission mechanism arranged on the upper portion of the valve body via a valve core shaft. Thereby the utility model has the advantages that the torque of the valve body is tiny, the power required is reduced and sensitivity is increased, electrical power consumption is saved. And the valve can cause the fluid flow to achieve arbitrary and automatic control with pressure or without pressure, and also has the advantages of automatic power off, high temperature resistance and corrosion resistance.

Description

The electromechanical control valve

Technical field

The utility model relates to a kind ofly, especially utilize ceramic chip to carry out the valve of fluid break-make control, belong to the valve class by motor-driven electromechanical control valve.

Background technique

At present, supporting valve commonly used is solenoid valve and mortor operated valve in the utensil such as industrial, civilian.The structure of solenoid valve mainly is to utilize the magnetic force that coil produced of alignment footpath, the number of turn, drives mandrel and does axial motion, causes glue system valve block and produces pressure difference, finishes the open and close of valve.Though the valve project organization of this structure is ingenious, its exist can not controlling liquid flow, heat resistance is poor, current are not smooth under the low pressure, defectives such as leak-down rate height.The structure of mortor operated valve mainly is to utilize the rotation torque of the motor source that is used as power, and drives ball valve and realizes closing and opening of valve.But in use power consumption is big for it, and the torque force of generation is big, and sensitivity is low, poor reliability.The same with solenoid valve, they all are difficult to satisfy the designing requirement of all kinds of auxiliary products.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and provides a kind of simple and reasonable for structure, adopts micro motor the control of ceramic valve chip to be realized the electromechanical control valve of opening of valves.It includes valve body, offers into water port and water outlet port on the valve body, and the valve port of horizontal is arranged in the valve body, settles Packed porcelain spool on the valve port, and this porcelain spool links to each other with the power-transmitting unit that is placed in valve body top by poppet shaft.

Described porcelain spool includes a location copper sheathing, in be placed with porcelain core lower body, porcelain core upper body successively, with the shift fork that the porcelain core upper body is connected together, described shift fork top is connected mutually with poppet shaft, offer fan shaped borehole at the porcelain core lower body, and on the porcelain core upper body, offer corresponding sector notch.For guaranteeing the sealability of above-mentioned porcelain spool and valve port, be pressed with sealed pressing sleeve on the valve port of the utility model below the porcelain core lower body.

The utility model is fixed with on described poppet shaft and the contacted cam of sensitive switch, and poppet shaft links to each other with micromachine by the under drive gear group.

Be glued with an evagination push rod with cam on the described sensitive switch, the push rod end disposed about in the sensitive switch has four mutual series-parallel contacts, and the contact respectively links to each other with micromachine.

The utility model adopts ceramic valve core to control the break-make of fluid, takes the forward and reverse current control system of cammingly, makes valve be bistable state, and, driving the fan angle of release degree of spool in a button and cam running orbit interlock mode, the moment of torsion that makes it to have valve body is small, power demand reduces, sensitivity is increased, and the power consumptive province can make any automatic control of fluid flow, pressure is arranged, do not have to press and all can, automatically outage is high temperature resistant, corrosion-resistant, has widened the characteristics of the using scope of miniature valve.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a power transmission arrangment schematic representation of the present utility model.

Fig. 3 is the control principle figure of sensitive switch of the present utility model.

The structural representation of Fig. 4 porcelain core of the present utility model upper body.

Fig. 5 is the structural representation of porcelain core lower body of the present utility model.

Fig. 6 is the novel overburdening compensating circuit schematic diagram of this practical confidence.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model includes a valve body 1, and it is provided with water inlet port 2 and the water outlet port 3 that communicates, in be provided with the valve port 4 of a horizontal, settle Packed porcelain spool 5 on the valve port.Described porcelain spool 5 includes a rubber seal gland 51 of being close to valve port 4, above concora crush porcelain core lower body 52 is arranged, be furnished with porcelain core upper body 53 above mutually.Also be placed with a copper sheathing 54 on sealed pressing sleeve 51, porcelain core lower body and porcelain core upper body all are placed in the copper sheathing 54.Porcelain core upper body 53 is provided with two short slots 55 of symmetry, settles superincumbent shift fork 56, and its underpart is provided with the projection 57 that matches with breach accordingly and is embedded in the short slot 55.On above-mentioned porcelain spool 5, link to each other with the power transmission arrangment that is placed in valve body top, see shown in the accompanying drawing 2 by a poppet shaft 6.Power-transmitting unit comprises the poppet shaft 6 that is screwed in shift fork 56 upper end portions of porcelain spool 5 with screw thread, Yi Bian be fixed with on the poppet shaft and the sensitive switch 7 contacted cams of putting 8.Poppet shaft 6 links to each other with a DC micromotor 10 by under drive gear group 9.The control of DC micromotor 10 is realized by sensitive switch 7.The push rod 11 that an evagination of being close to cam 8 is arranged on the sensitive switch, the place, the inner of this push rod 11 promptly is mounted with four mutual series-parallel contact T1, T2, T3, T4, as shown in Figure 3 in the sensitive switch 7.Set DC micromotor 10 and be in the push rod 11 that protuberance is depressed sensitive switch 7 at cam 8, make contact T1 among Fig. 3, be the unlatching set of valve when T2 communicates, the positive pole of power supply is connected the E end of direct current generator 10, moment is pressed a button A, power cathode is connected the other end F of micromachine by contact T1, T2, DC micromotor 10 gets electric being rotated in the forward, moment is slowed down by under drive gear group 9 and is increased, poppet shaft 6 drives shift fork 56 and stirs the rotation synchronously of porcelain core upper body 53 dos, and the push rod 11 of sensitive switch 7 is done to decide radius along cam 8 protruding cylindricals and moved.Porcelain core upper body 53 is provided with the fan-shaped dibit breach 57 of two symmetries, sees accompanying drawing 4.When it is rotated on the porcelain core lower body 52 corresponding two the fan-shaped dibit holes 58 (seeing accompanying drawing 5) that are provided with when the part coincides, the liquid port 2 of can intaking certainly passes porcelain spool 5, flows out from water outlet port 3.Along with the rotation of poppet shaft 6, flow increases gradually, if unclamp the some button A among Fig. 3 this moment, then DC micromotor 10 dead electricity promptly stop, and flow fixes; If continue press points button A, when the cam 8 that press-fits one with poppet shaft 6 revolves when turning 90 degrees to the recess position, the push rod 11 of sensitive switch 7 ejects, and contact T1, T2 are disconnected, and T3, T4 connect, because of a button B place disconnects the position, A is ineffective for the some button, and DC micromotor 10 dead electricity stop automatically, valve wide open is finished first stable state.This moment, the breach 57 of porcelain core upper body 53 and porcelain core lower body 52 overlapped fully with dibit hole 58, and liquid continues to gush out with peak rate of flow.Press a button B, power cathode is connected the F end of DC micromotor 10 by contact T3, T4, motor gets the electric rotation of restarting, press-fiting push rod 11 that all-in-one-piece cam 8 makes sensitive switch 7 with poppet shaft 6 moves along the recess of cam 8, shift fork 56 drives porcelain core upper bodies 53 and shifts to stifled gear to porcelain core lower body 52 dibit holes 58 from the position that overlaps with porcelain core lower body 52 passages gradually, and flow is reduced gradually.When the dibit hole 58 of porcelain core lower body 52 was stopped up fully by porcelain core upper body 53, fluid flowed and stops.This moment, cam 8 rotated an angle of 90 degrees degree, and the lug boss of cam 8 is depressed the push rod 11 of sensitive switch 10, and contact T3, T4 disconnect, and T1, T2 connect, and DC micromotor 10 dead electricity stop, and valve closing is finished second stable state.Among the embodiment of the present utility model, can also set up the safety allowance circuit of overburden auto-cutout, as shown in Figure 6.Connect compensation circuit by the total circuit both positive and negative polarity that power supply is drawn; RP; R constitutes comparator; the photoelectric coupling circuit GD of UNICOM; regulate RP; change luminous intensity; the forward level of photoelectric coupling circuit output amplifies through triode VT, drives the normally opened contact of relay K, makes positive source and DC micromotor conducting; in running; as under drive gear group 9; poppet shaft 6; cam 8; sensitive switch 7 breaks down or automatic control circuit when malfunctioning, and electric current increases in the loop, and voltage reduces; photoelectric coupling GD opens circuit; relay electric-loss, normally opened contact disconnect, motor dead electricity and shutting down.In the present embodiment, be that DC6V calculates by the supply voltage of motor, the speed ratio of train of reduction gears 9 changes approximately cam 8 revolutions moving 1/4 and needs 2 seconds, and some button A, B control open and close respectively.Each open and close valve body only needs 2 seconds consuming time, and outage automatically after 2 seconds does not all have electricity support in all the other water flowing times and the power-off time, guarantee bistable circuit.

Claims

1, a kind of electromechanical control valve, it includes valve body, offer into water port and water outlet port on the valve body, the valve port that horizontal is arranged in the valve body, it is characterized in that upward arrangement Packed porcelain spool (5) of described valve port (4), this porcelain spool links to each other with the power-transmitting unit that is placed in valve body (1) top by poppet shaft (6).

2, electromechanical control valve as claimed in claim 1, it is characterized in that described porcelain spool (5) includes a location copper sheathing (54), in be placed with porcelain core lower body (52), porcelain core upper body (53) successively, the shift fork (56) that is connected together with the porcelain core upper body, described shift fork top is connected mutually with poppet shaft (6), offer fan shaped borehole (58) at porcelain core lower body (52), and on porcelain core upper body (53), offer corresponding sector notch (57).

3, electromechanical control valve as claimed in claim 2 is characterized in that being pressed with on the valve port below porcelain core lower body (52) sealed pressing sleeve (51).

4, electromechanical control valve as claimed in claim 1 or 2 is characterized in that being fixed with on the described poppet shaft (6) and the contacted cam of sensitive switch (7) (8), and poppet shaft links to each other with micromachine (10) by under drive gear group (9).

5, electromechanical control valve as claimed in claim 4, it is characterized in that described sensitive switch (7) is gone up and cam (8) is glued with an evagination push rod, push rod end disposed about in the sensitive switch (7) has four mutual series-parallel contacts, and the contact respectively links to each other with micromachine (10).