CN2700650Y

CN2700650Y - electrical controlled valve

Info

Publication number: CN2700650Y
Application number: CN 200420035848
Authority: CN
Inventors: 程安源
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-13
Filing date: 2004-05-13
Publication date: 2005-05-18
Anticipated expiration: 2014-05-13

Abstract

The utility model discloses an electric control valve, comprising a valve body, pistons, a push rod, coils and iron cores. The electric control valve is characterized in that the valve body is provided with three iron core piston cavities which are penetrated mutually up and down in turn, a piston cavity and a sealing piston cavity. The iron core piston cavities are provided with three segments of iron cores which are supported and connected by springs. The external portion of the valve body is provided with the three segments of iron cores and is provided with 1-2 groups of electromagnetic coils which are matched with the three segments of iron cores. Meanwhile, a lower valve body is provided with 1-2 fluid passages. The three segments of iron cores can be all made of magnetism conducting materials, the upper segment of the iron core and the lower segment of the iron core are made of magnetic materials, and middle segment of the iron core is made of magnetism conducting materials. The electric control valve with the structural not only can relieve dependence for a relay, but also does not need to energize for the relay. Therefore, the electric control valve can simplifies the matching system of the electric control valve.

Description

Electrically-controlled valve

Technical field

The utility model relates to a kind of electrically-controlled valve, belongs to electricity controlled fluid valve class.

Background technique

Electrically-controlled valve is a kind of common control valve for fluids, the electrically-controlled valve of institute's mechanical transmission that is useful on and manufacturing process control at present, all be by relay the control solenoid dead electricity be controlled electrically-controlled valve unlatching or closing motion.Be that the magnetic field that produces behind the coil electricity makes iron core obtain the kinetic energy Open valve, make flowed by the fluid of valve control, enter normal working.And work as coil losing electricity electric control valve is closed automatically, cut off fluid and quit work.This general electrically-controlled valve that controlled by relay can play crucial effect in the mechanical automation transmission, but because the intrinsic defect that exists on its structure, make its in practice, exist below deficiency aspect two:

One owing to must use relay control coil to get dead electricity, makes supporting control system huge, and the cost height can't reduce manufacturing and maintenance expenses; Simultaneously, owing to adopt the point control that has of relay, very easily occur burning, moving-mass problems such as bad connection, screens.

Its two because the long-term energising of hold-in winding is unique prerequisite of electrically-controlled valve proper functioning, therefore can brings and heat up too high and burn hidden danger to coil; Simultaneously, because must long-term energising, thereby not only cause the power consumption problems of too, but also bring the problems such as long-time magnetic interference, radiation of working environment.

Therefore, how existing electrically-controlled valve is improved, improved its applicable performance, alleviate degree of dependence, become a kind of expectation of electrically-controlled valve research and development production unit and user relay.

The technological scheme content

The purpose of the present utility model: aim to provide a kind of new electronic control valve that does not need long-term energising, excessively do not rely on relay.

This electrically-controlled valve, by valve body 1,

piston

2,6, push rod 5, coil and iron core are formed, and it is characterized in that: three ferrite core piston cavity C that connect each other successively up and down are being set, piston cavity B and packed-piston chamber A in the described valve body 1, and the three

sections iron cores

8,10,12 that connected the support interlock by spring 7 are being set in described ferrite core piston cavity C, 1～2 group of

electromagnetic coil

9,11 that is complementary with three sections iron cores in valve body 1 outer installment that three sections iron core portions are being set simultaneously.

The bottom of described valve body 1 is provided with a microfluidic channels 15, and the upper end-hole of this fluid passage 15 is connected with the work relief opening 14 or the passage 20 of valve body 1 side; Its lower end mouth then is connected with packed-piston chamber A lower cavity or fluid passage 4 or top ferrite core piston cavity C.

Valve body 1 outside of described ferrite core piston cavity C portion is provided with two groups of

electromagnetic coils

9,11, and centre that section iron core 10 in three sections iron cores in the described ferrite core piston cavity C is fixed; Simultaneously, in described valve body 1 lower body, be provided with two

fluid passages

4,15; Wherein said fluid passage 4, on connect ferrite core piston cavity C, connect down packed-piston chamber A lower cavity; Described fluid passage 15 is a minitype channel, and its upper end-hole is connected with the work relief opening 14 of valve body 1 side portion; Its lower end mouth then is communicated with packed-piston chamber A lower cavity.

Valve body 1 outside of described ferrite core piston cavity C is provided with one group of electromagnetic coil 9, one section iron core 10 in centre of three sections iron cores in described this ferrite core piston cavity C is fixed, and this iron core is to be made by permeability magnetic material, and two-

section iron core

8,12 then is a permanent magnet about it.

According to this electrically-controlled valve of above technological scheme design, compare with the congenerous electrically-controlled valve of generally using at present, have the following advantages:

One has realized must not using relay control coil gain and loss electric process, so not only is simplified design, reduces fabricating cost, for entire system realization modulation control creates conditions, and provides strong technical support for contactless control and equipment safety operation;

Its two, when having realized the electrically-controlled valve proper functioning, the purpose that coil need not be switched on for a long time, effective extension coil working life, and for reducing power consumption, alleviating magnetic field radiation and disturbing all has positive effect.

Description of drawings

Accompanying drawing 1 is the utility model structural representation (two electromagnetic coil);

Accompanying drawing 2 is a single electromagnetic winding electrically-controlled valve structural representation.

Accompanying drawing 3 is located at the electrically-controlled valve schematic representation of valve body upper/lower terminal for the electromagnetic coil branch;

Accompanying drawing 4 is located at the electrically-controlled valve schematic representation of valve one end and a side for the electromagnetic coil branch.

Among the figure: 1, valve body 2, piston 3, seal ring 4, fluid passage 5, push rod 6, piston 7, spring 8, iron core 9, electromagnetic coil 10, iron core 11, electromagnetic coil 12, iron core 13, suction port 14, work relief opening 15, fluid passage 16, be equipped with pressure pore 17, close relief opening 18, start suction port 19, work suction port 20, passage 21, connect spring A, packed-piston chamber B, piston cavity C, ferrite core piston cavity.

Embodiment

Electrically-controlled valve shown in Fig. 1～4, it is a kind of inventive improvements to existing opening type electrically-controlled valve and promotion merit formula electrically-controlled valve.

Below 1～4 further describe the utility model with reference to the accompanying drawings:

Embodiment 1:(sees accompanying drawing 1)

A kind of electrically-controlled valve as shown in Figure 1, it is by valve body 1,

piston

2,6, push rod 5, electromagnetic coil and iron core are formed, it is characterized in that: three ferrite core piston cavity C, piston cavity B, packed-piston chamber A that connect each other successively up and down are being set in the described valve body 1, and in described ferrite core piston cavity C, are being provided with by connecting three

sections iron cores

8,10,12 that spring 21 is supporting; Simultaneously two groups of electromagnetic coils 9 that play to start the air inlet effect being complementary with three sections iron cores, work the electromagnetic coil 11 of closing scavenging action in this valve body 1 outer installment that three sections iron core portions are being set, in described these three sections iron cores, iron core 10 is fixed, and its two ends are connected with top iron core 12, bottom iron core 8 respectively by spring 21.

In addition, be provided with a fluid passage 4 and another fluid passage 15 in the lower body of described valve body 1, wherein the upper end-hole of fluid passage 4 is connected with ferrite core piston cavity C, and its lower end mouth then is connected with the lower cavity of packed-piston chamber A; And another fluid passage 15 is the tiny microfluidic channels of a bore, and its upper end-hole is connected with the work relief opening 14 of being located at valve body side portion, and its lower end mouth then is connected with packed-piston chamber A lower cavity.In addition, improve as further layout to microfluidic channels 15, its upper end-hole can be directly with two-

piston

2,6 between passage 20 be connected; Its lower end mouth then has two kinds of mode of communicating again, and the first inserts fluid passage 4 with lower end mouth, the arbitrary position except that the outlet port; It two is that lower end mouth is inserted ferrite core piston cavity C.

Thisly be provided with two groups of

electromagnetic coils

9,11 valve body 1 top (in be provided with three sections iron core places); And be provided with the electrically-controlled valve of fluid passage 4 (this fluid passage 4 also has, and is located at piston and push rod center sometimes), fluid passage 15 in existing electrically-controlled valve in valve body 1 bottom, its working principle is as follows:

At the beginning of electrically-controlled valve is started working, owing to only give the electromagnetic coil that starts air inlet 9 energisings, only make the iron core 10 and the iron core 8 of fixed-site obtain energy, because the effect of electromagnetic coil 9, producing magnetic force makes iron core 8 move upward later on, thereby cause opening control valve and start suction port 18, make the fluid that enters by suction port reach the fluid passage 4 that is communicated with this ferrite core piston cavity C bottom by ferrite core piston cavity C, make the pressure flow body enter packed-piston chamber A, thereby make the upwards migration of piston that is in the sealing piston cavity A; Along with moving on this piston, at first be to cause the pressure pore 16 that is equipped with of valve body 1 sidepiece to be closed, and along with continuing rising, push sealing cover on the work suction port 19 open by the push rod 5 that is connected with piston, thereby make close relief opening 17 to the work relief opening 14 of fluid that enters by work suction port 19 carry out the transmission work of fluid through valve body 1 top.This only needed for 0.3～1 second by the air feed process that electromagnetic coil starts, dead electricity along with electromagnetic coil 9, the iron core 8 of bottom will descend under the effect that connects the support and connection spring 21 between three iron cores quickly in the iron core cavity C, seal up the startup suction port 18 of electrically-controlled valve, because at this moment on the fluid passage 4 and valve body 1 of this valve body 1 inside, equal pressure fluid abrim in following two cavitys, but the seal ring of clutch release slave cylinder and valve body relief opening can not leak gas anything but, and the fluid that exist in suction port and the relief opening this moment is the fluid with certain pressure, 15 upper ends, small fluid passage are in passage 20 and the work relief opening 14, just in the piston/cylinder with the pressure fluid introduction channel 4 in passage 20 or the work relief opening 14 or ferrite core piston cavity C or A bottom, packed-piston chamber, to support expansionary force owing to intermediate piston chamber B inner carrier upper spring 7, and cause piston B to descend under the acting in conjunction of working fluid pressure, make valve body continue to keep normal working.

Yet, in case we will make electrically-controlled valve termination work, as long as given electromagnetic coil 11 energisings of closing function in addition.Because giving electromagnetic coil 11 energisings in the time of 1～3 second, because it is electric that it gets, make between the interior iron core 10 of electromagnetic coil 11 and iron core cavity C, the iron core 12 and produce magnetic field, iron core 12 is moved downward open the work relief opening, finally make whole valve body be in closed condition, stop whole work.

Embodiment 2 (seeing accompanying drawing 2)

Accompanying drawing 2 is another embodiments of the present utility model, electrically-controlled valve shown in this scheme, its main characteristics is valve body 1 top (in establish three sections iron cores corresponding position), its outside only is provided with one group of electromagnetic coil 9, for after making 9 energisings of this electromagnetic coil, can play the iron core 10 absorption effect of two iron cores 12 and iron core 8 up and down that makes; Inventor spy does following the requirement with the material of these three iron cores: with the permanent magnetic material of upper and lower two iron cores, 12,8 of, and the iron core 10 of permeability magnetic materials of centre are made; And only be provided with a fluid passage 4 (also microfluidic channels 15 can be arranged) in valve body 1 bottom, this moment, the working principle of this electrically-controlled valve was as follows:

When forward is switched on, because the effect of electromagnetic coil 9 and iron core 10, make iron core 10 produce magnetic force, because the magnetic pole of the lower end of this iron core 10 and the upper end of bottom permanent magnet iron core 8 are respectively SN (or NS) magnetic pole, therefore according to the magnetic principle that there is a natural attraction between the sexes, will inhale on the bottom iron core 8, make by starting the fluid that suction port 18 enters, enter seal chamber A bottom by fluid passage 4, the piston rising that promotes in this cavity makes valve in running order; And producing the iron core 10 in magnetic field simultaneously, 12 of the iron cores of being made by permanent magnet with top are in the state that the same sex is repelled each other.Impel on the top iron core 12 and move, play and seal the effect that relief opening 17 is closed on valve body top, thereby close relief opening; In this state, even after the dead electricity, because the effect of permanent magnet can make valve body be in logical working state forever.

In case yet we are to electromagnetic coil 9 oppositely during energising, because the pole polarity up and down of the iron core 10 that permeability magnetic material is made in the middle of this moment is opposite when switching on forward, repel each other so cause with bottom iron core 8, and cause with top iron core 12 and inhale mutually, because providing pressure flow body in the valve body 1 lower seal chamber A has been provided, so under the effect of intermediate piston chamber B inner piston rod upper spring 7, make the fluid passage of whole valve body be in closed condition.

In actual fabrication, the electromagnetic coil 9 that is adopted also can adopt the combining form of two electromagnetic coils.Because the quantity that makes iron core 10 produce induction field usefulness and electromagnetic coil has nothing to do.

In addition, as to further improvement in the technical proposal, the ferrite core piston cavity C on described valve body 1 top, and place iron core and the outer electromagnetic coil 9 of valve body in this ferrite core piston cavity C, 11 design, also can be according to the requirement of valve body Environmental Conditions, with electromagnetic coil 9, be located at the two ends up and down of valve body 1 in 11 minutes, form two independently ferrite core piston cavity C-1, C-2 (as shown in Figure 3), also can be with ferrite core piston cavity C-2 and the electromagnetic coil 11 that sets up separately, also can be located at the side (as accompanying drawing 4) of valve body 1, make the former interior iron core 10 of ferrite core piston cavity that is secured in be divided into two-section 10-1,10-2, by iron core 10 and two electromagnetic coils that set up separately 9,11, form two Electromagnetic Control mechanisms that set up separately and that can cut off or open fluid passage 4.

Claims

1, a kind of electrically-controlled valve, form by valve body (1), piston (2,6), push rod (5), electromagnetic coil and iron core, it is characterized in that: three ferrite core piston cavity (C) that connect each other successively up and down are being set in the described valve body (1), piston cavity (B) and packed-piston chamber (A), and the three sections iron cores (8,10,12) that supported interlock by spring (7) are being set in described ferrite core piston cavity (C), 1～2 group of electromagnetic coil (9,11) that is complementary with three sections iron cores in the valve body that three sections iron core portions are being set (1) outer installment simultaneously.

2, a kind of electrically-controlled valve as claimed in claim 1 is characterized in that: the bottom of described valve body (1) is provided with a microfluidic channels (15), and the upper end-hole of this fluid passage (15) is connected with the work relief opening (14) or the passage (20) of valve body (1) side; Its lower end mouth then is connected with packed-piston chamber (A) lower cavity or fluid passage (4) or top ferrite core piston cavity C.

3, a kind of electrically-controlled valve as claimed in claim 1, it is characterized in that: valve body (1) outside of described ferrite core piston cavity (C) portion is provided with two groups of electromagnetic coils (9,11), and centre that section iron core (10) in three sections iron cores in the described ferrite core piston cavity (C) is fixed; Simultaneously, in described valve body (1) lower body, be provided with two fluid passages (4,15); Connect ferrite core piston cavity (C) on the wherein said fluid passage (4), connect packed-piston chamber (A) lower cavity down; Described fluid passage (15) is a minitype channel, and its upper end-hole is connected with the work relief opening (14) of valve body (1) side portion; Its lower end mouth then is connected with packed-piston chamber (A) lower cavity.

4, a kind of electrically-controlled valve as claimed in claim 1, it is characterized in that: valve body (1) outside of described ferrite core piston cavity (C) portion is provided with one group of electromagnetic coil (9), the one section iron core in centre (10) of three sections iron cores in described this ferrite core piston cavity (C) is fixed, and this iron core is to be made by permeability magnetic material, and two-section iron core (8,12) then is a permanent magnet about it.

5, a kind of electrically-controlled valve as claimed in claim 1 is characterized in that: the upper end-hole of described microfluidic channels (15) can be directly with last lower piston between passage (20) be connected.

6, a kind of electrically-controlled valve as claimed in claim 1 is characterized in that: the lower end mouth of described microfluidic channels (15) is connected with the top ferrite core piston cavity C.

7, a kind of electrically-controlled valve as claimed in claim 1 is characterized in that: described ferrite core piston cavity C is located at the upper/lower terminal of valve body (1).