CN111623164A - Normally open type electromagnetic valve control structure of electromagnetic proportional valve - Google Patents

Normally open type electromagnetic valve control structure of electromagnetic proportional valve Download PDF

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Publication number
CN111623164A
CN111623164A CN201910153208.XA CN201910153208A CN111623164A CN 111623164 A CN111623164 A CN 111623164A CN 201910153208 A CN201910153208 A CN 201910153208A CN 111623164 A CN111623164 A CN 111623164A
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CN
China
Prior art keywords
valve
normally open
air inlet
air
air outlet
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Pending
Application number
CN201910153208.XA
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Chinese (zh)
Inventor
游平政
马原怀
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Shanghai Chelic Pneumatic Corp
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Shanghai Chelic Pneumatic Corp
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Publication date
Application filed by Shanghai Chelic Pneumatic Corp filed Critical Shanghai Chelic Pneumatic Corp
Priority to CN201910153208.XA priority Critical patent/CN111623164A/en
Publication of CN111623164A publication Critical patent/CN111623164A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/402—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a diaphragm

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a normally open type electromagnetic valve control structure of an electromagnetic proportional valve, which is a normally open type electronic proportional valve, wherein an air inlet electromagnetic valve and an air outlet electromagnetic valve are arranged in the normally open type electronic proportional valve; the air inlet electromagnetic valve is of a normally closed type, the air outlet electromagnetic valve is of a normally open type, when power failure occurs, the air outlet electromagnetic valve can be restored to be in an open state of the air inlet, the air inlet is communicated with the air outlet, fluid in an air pressure control chamber in the normally open type electric control proportional valve can be discharged from the air inlet and the air outlet, and the pressure of the fluid in the air pressure control chamber can be relieved when the power failure occurs.

Description

Normally open type electromagnetic valve control structure of electromagnetic proportional valve
Technical Field
The invention relates to a normally open type electromagnetic valve control structure of an electromagnetic proportional valve, in particular to a normally closed type electromagnetic valve control structure which can achieve the purposes of pressure relief and safety when the internal fluid pressure is in a power-off state through the characteristics of electric excitation and normally open type electromagnetic valves.
Background
An electrically controlled proportional valve is a well-known fluid flow control device in industrial equipment, and referring to fig. 3, a normally open electrically controlled proportional valve 90 is usually provided with: a normally closed intake solenoid valve 91 for intake and a normally closed exhaust solenoid valve 92 for exhaust, both of which are normally closed, that is, the valve ports of the solenoid valves are closed and do not flow when they are not energized;
when the two solenoid valves adjust the air input through the externally connected controller, the pressure of the pneumatic control chamber 93 in the normally open solenoid valve 90 can be changed, and the pneumatic control chamber 93 can drive the pneumatic chamber 94 to open and close, so as to form the required outlet pressure by controlling the flow of the fluid 914 flowing through the pneumatic chamber 94.
More specifically, referring to fig. 4, the normally closed intake solenoid valve 91 used in the prior art is respectively provided with an air guide valve rear cover 910, an air inlet 911, an air outlet 912 and an air outlet 913, and when the valve is not energized, the fluid F enters from the air inlet 911 and is blocked from flowing through the air guide valve rear cover 910.
Referring to fig. 5, when the power is turned on, the rear cover 910 of the air guide valve is opened, so that the fluid 914 that is originally blocked passes through and is output through the air outlet 912.
Referring to fig. 6, when the energization is stopped, the rear cover 910 of the air guiding valve is closed, and the fluid 914 is partially discharged from the air outlet 913 and partially blocked from the air inlet 911; the structure and the related operations of the other normally closed exhaust solenoid valve 92 are the same as those of the normally closed intake solenoid valve 91, and therefore, the description thereof is not repeated.
When the two electromagnetic valves are both designed to be normally closed, the two electromagnetic valves are kept to be normally closed after being powered off, and the internal pressure of the air pressure control chamber 93 is kept to be in an inflation state, so that the opening degree of the air pressure chamber 94 is kept, and the flow of the air pressure control chamber 93 is controlled to form outlet pressure;
however, this working state has a safety problem, because the normally open electrically controlled proportional valve 90 after power failure still maintains a full pressure state, if an unexpected state occurs like power failure, the device cannot be released by emergency pressure relief, and the electrically controlled proportional valve is prone to malfunction or cannot be removed immediately.
Disclosure of Invention
In view of the double normally closed design in the existing electromagnetic valve, the purpose of achieving safety actually required by the industry is still insufficient; therefore, the main objective of the present invention is to develop a solenoid valve capable of fully discharging internal pressure when the solenoid valve is in a power-off state, so that the problem of failure in case of emergency power-off can be improved.
To achieve the above object, the present invention provides a normally open type solenoid valve control structure of a solenoid proportional valve, comprising: the normally open type electric control proportional valve is internally provided with an air inlet electromagnetic valve and an air outlet electromagnetic valve, the air inlet electromagnetic valve is provided with an air inlet, an air outlet and an air outlet, and the air outlet electromagnetic valve is provided with an inlet, an air outlet and an air outlet; the air inlet electromagnetic valve is normally closed, the air outlet electromagnetic valve is normally open, when power failure occurs, the air outlet electromagnetic valve can be restored to be in an open state of the air inlet, the air inlet is communicated with the air outlet, the pressure of fluid in an air pressure control chamber in the normally open type electric control proportional valve can be discharged from the air inlet and the air outlet, and the pressure of the fluid in the air pressure control chamber can be relieved when the power failure occurs.
It is a secondary object of the present invention that the exhaust solenoid valve is normally energized.
It is a secondary object of the present invention that the intake solenoid valve is normally in an unenergized, energized state.
The invention also provides a normally open type electromagnetic valve control structure of the electromagnetic proportional valve, which comprises the following components: a normally open electrically controlled proportioning valve having therein:
an air inlet electromagnetic valve, which is internally provided with an air inlet, an air outlet and an air outlet;
and an exhaust solenoid valve, which is internally provided with an air inlet, an air outlet and an exhaust port;
wherein, this air inlet solenoid valve is the normal open type, and this exhaust solenoid valve is the normal open type, and when the outage takes place, this exhaust solenoid valve resumes to this air inlet open mode, and this air inlet communicates with each other with this gas outlet, and can let the interior fluid pressure of an atmospheric pressure control room in this normally open type automatically controlled proportional valve, is discharged by this air inlet and this gas outlet, makes inside this fluid pressure can reach the pressure release in the outage.
A secondary object of the present invention is to provide a normally open intake solenoid valve which is energized and excited in a normal state.
When the normally-open type electric control proportional valve is used in a power-off state, the exhaust electromagnetic valve can be restored to the air inlet opening state firstly, the air inlet is communicated with the air outlet, and fluid pressure in an air pressure control chamber in the normally-open type electric control proportional valve can be exhausted from the air inlet and the air outlet and the air pressure bin is closed at the same time, so that the fluid pressure in the structure can be relieved when the power is off, and the whole safety of the mechanism can be kept when the mechanism is operated under the condition of sudden power failure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a diagram illustrating the normal operation of the present invention.
FIG. 2 is a schematic diagram of the present invention during venting and de-energizing.
Fig. 3 is a schematic structural diagram of the prior art.
Fig. 4 is a schematic diagram illustrating a normally closed intake solenoid valve in normal operation according to the prior art.
Fig. 5 is a schematic diagram illustrating a normally closed intake solenoid valve according to the prior art when energized.
Fig. 6 is a schematic diagram of a normally closed intake solenoid valve in the prior art when it is not energized.
Description of reference numerals:
(10) .. normally open type electric control proportional valve
(11) .. Voltage control Chamber
(12) .. pneumatic bin
(20) .. electromagnetic valve for air intake
(P1.) air intake
(A1) .. air outlet
(R1.) exhaust port
(30) .. exhaust electromagnetic valve
(P2.) air intake
(A2) .. air outlet
(R2.) exhaust port
(F) .. fluid
(90) .. normally open type electric control proportional valve
(91) .. normally closed type electromagnetic valve for air intake
(910) .. rear cover of air-guide valve
(911) .. air inlet
(912) .. air outlet
(913) .. discharge port
(914) .. fluid
(92) .. normally closed exhaust electromagnetic valve
(93) .. air pressure control chamber
(94) .. air pressure chamber
Detailed Description
In general, the best possible embodiment of the present invention will be described in detail with reference to fig. 1 and 2 to enhance the understanding of the present invention, and the drawings of the present invention are for illustrative purposes only and are not limited thereto.
The invention relates to a normally open type electromagnetic valve control structure of an electromagnetic proportional valve, which comprises: a normally open type electrically controlled proportional valve 10, wherein the left and right sides inside the normally open type electrically controlled proportional valve 10 are respectively provided with: an intake solenoid valve 20 and an exhaust solenoid valve 30, the intake solenoid valve 20 is provided with an intake port P1, an exhaust port a1 and an exhaust port R1, and the exhaust solenoid valve 30 is provided with an intake port P2, an exhaust port a2 and an exhaust port R2.
The intake solenoid valve 20 is normally closed and the exhaust solenoid valve 30 is normally open, and the normally closed type can be understood to block the flow paths of the air flows when energized and excited, and the normally open type can be understood to connect the flow paths of the air flows when energized and excited.
When the power failure occurs, the exhaust solenoid valve 30 will return to the open state of the air inlet P2, and the air inlet P2 and the air outlet a2 are connected, and the pressure of a fluid F in the air pressure control chamber 11 of the normally open electrically controlled proportional valve 10 can be exhausted through the air inlet P2 and the air outlet a2, and the air pressure chamber 12 is closed at the same time, so that the pressure of the fluid F inside the structure can be relieved when the power failure occurs, and the overall safety of the mechanism can be maintained even when the power failure occurs suddenly.
In the above structure, under normal conditions, the exhaust solenoid valve 30 is in an energized state, the fluid F in the air pressure control chamber 11 is closed by the valve opening of the normally open exhaust solenoid valve 30, so that the fluid F is stopped at the air inlet P2 of the exhaust solenoid valve 30, and the air pressure in the air pressure control chamber 11 is maintained in a stable pressure state by such operation, and at this time, the intake/exhaust valve 20 is in an unenergized state.
In another embodiment, the intake solenoid valve 20 can be changed from a normally closed type to a normally open type, and the exhaust solenoid valve 30 is also a normally open type, and when the intake solenoid valve 20 is a normally open type, it is required to be changed to a power-on and magnetic-exciting state in a normal state to achieve the purpose of power-off and pressure relief.
In summary, the normally open type solenoid valve control structure of the solenoid proportional valve of the present invention changes the original dual normally closed type solenoid valve into a normally closed type and a normally open type through the original intake solenoid valve 20 and the exhaust solenoid valve 30, so that the original structure does not need to be changed again, the purpose of power-off and pressure relief can be achieved, the safety in the overall use is further increased, and the above purpose can be achieved by changing the original dual normally open type.

Claims (5)

1. A normally open type solenoid valve control structure of an electromagnetic proportional valve comprises: an electrically controlled normally open proportioning valve (10) having in its interior:
an air inlet electromagnetic valve (20) which is internally provided with an air inlet (P1), an air outlet (A1) and an air outlet (R1);
and an exhaust solenoid valve (30) provided therein with an air inlet (P2), an air outlet (A2) and an exhaust outlet (R2);
the method is characterized in that: the air inlet electromagnetic valve (20) is of a normally closed type, the air outlet electromagnetic valve is of a normally open type, when power failure occurs, the air outlet electromagnetic valve (30) is restored to be in an open state of the air inlet (P2), the air inlet (P2) is communicated with the air outlet (A2), and fluid (F) pressure in an air pressure control chamber (11) in the normally open type electric control proportional valve (10) can be discharged from the air inlet (P2) and the air outlet (A2), so that the pressure of the fluid (F) in the air inlet electromagnetic valve (20) can be relieved when the power failure occurs.
2. The normally open type solenoid valve control structure of a solenoid proportional valve according to claim 1, wherein the exhaust solenoid valve (30) is normally energized.
3. The normally open type solenoid valve control structure of a solenoid proportional valve according to claim 1, wherein the intake solenoid valve (20) is normally in an unenergized and energized state.
4. A normally open type solenoid valve control structure of an electromagnetic proportional valve comprises: an electrically controlled normally open proportioning valve (10) having in its interior:
an air inlet electromagnetic valve (20) which is internally provided with an air inlet (P1), an air outlet (A1) and an air outlet (R1);
and an exhaust solenoid valve (30) provided therein with an air inlet (P2), an air outlet (A2) and an exhaust outlet (R2);
the method is characterized in that: the air inlet solenoid valve (20) is normally open, the air outlet solenoid valve is normally open, when power failure occurs, the air outlet solenoid valve (30) is restored to be in the opening state of the air inlet (P2), the air inlet (P2) is communicated with the air outlet (A2), and fluid (F) pressure in an air pressure control chamber (11) in the normally open type electric control proportional valve (10) can be discharged from the air inlet (P2) and the air outlet (A2), so that the pressure of the fluid (F) inside can be relieved when the power failure occurs.
5. The control structure of a normally open type solenoid valve of an electromagnetic proportional valve according to claim 4, wherein the intake solenoid valve (20) is in a normally energized state when it is normally open.
CN201910153208.XA 2019-02-28 2019-02-28 Normally open type electromagnetic valve control structure of electromagnetic proportional valve Pending CN111623164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910153208.XA CN111623164A (en) 2019-02-28 2019-02-28 Normally open type electromagnetic valve control structure of electromagnetic proportional valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910153208.XA CN111623164A (en) 2019-02-28 2019-02-28 Normally open type electromagnetic valve control structure of electromagnetic proportional valve

Publications (1)

Publication Number Publication Date
CN111623164A true CN111623164A (en) 2020-09-04

Family

ID=72270254

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910153208.XA Pending CN111623164A (en) 2019-02-28 2019-02-28 Normally open type electromagnetic valve control structure of electromagnetic proportional valve

Country Status (1)

Country Link
CN (1) CN111623164A (en)

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