CN209977406U - 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 PDFInfo
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- CN209977406U CN209977406U CN201920256078.8U CN201920256078U CN209977406U CN 209977406 U CN209977406 U CN 209977406U CN 201920256078 U CN201920256078 U CN 201920256078U CN 209977406 U CN209977406 U CN 209977406U
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Abstract
The utility model discloses a normally open type solenoid valve control structure of a solenoid proportional valve, which is a normally open type electric control proportional valve, wherein an air inlet solenoid valve and an exhaust solenoid valve are arranged in the solenoid valve, the air inlet solenoid valve is provided with an air inlet, an air outlet and an exhaust port, and the exhaust solenoid valve is also provided with an air inlet, an air outlet and an exhaust port; 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
Technical Field
The utility model discloses a normally open type solenoid valve control structure of electromagnetism proportional valve especially indicates one kind and can pass through the characteristic of electric power excitation normally closed type and normally open type, lets inside fluid pressure can reach the pressure release and have the purpose of security concurrently under the outage state.
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.
SUMMERY OF THE UTILITY MODEL
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 that can completely discharge the internal pressure when the solenoid valve is in the power-off state, so that the problem of the failure can be improved when the solenoid valve is in the emergency power-off state.
To achieve the above object, the present invention provides a normally open type solenoid valve control structure of an electromagnetic proportional valve, which comprises: 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.
A secondary objective of the present invention is to provide the exhaust solenoid valve in a normal energized state.
A secondary object of the present invention is to provide a solenoid valve that is not energized and energized in a normal state.
The utility model also provides a normally open type solenoid valve control structure of electromagnetism proportional valve, include: 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 in a normal energized state.
The utility model is used for when the outage state takes place, this exhaust solenoid valve can resume earlier into the air inlet state of opening, and this air inlet then communicates with each other with this gas outlet, and can let an indoor fluid pressure of atmospheric pressure control in this normally open type automatically controlled proportional valve, discharge via this air inlet and this gas outlet, and close the atmospheric pressure storehouse simultaneously, make inside this fluid pressure can be when the outage, make the inside purpose that can reach the pressure release of structure, let the function under the condition of outage suddenly, can keep the holistic security of mechanism.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of the present invention in normal operation.
Fig. 2 is a schematic diagram of the present invention during exhausting and power-off.
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, this best possible embodiment is described in detail with reference to fig. 1 and 2 to increase the understanding of the present invention, and the drawings of the present invention are provided with a three-port two-position solenoid valve as an example for understanding and not limited thereto.
The utility model relates to a normally open type solenoid valve control structure of electromagnetism proportional valve, including: 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.
The utility model discloses mainly when the outage state takes place, this exhaust solenoid valve 30 can resume earlier into air inlet P2 open mode, and this air inlet P2 then communicates with each other with this gas outlet A2, and can let a fluid F pressure in the automatically controlled proportional valve 10 of this normally open type air pressure control room 11, discharge with this gas outlet A2 via this air inlet P2, and close atmospheric pressure storehouse 12 simultaneously, make inside this fluid F pressure can be when the outage, make the inside purpose that can reach the pressure release of structure, thereby under the condition of operation outage suddenly, also still can keep the holistic security of mechanism.
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.
To sum up, the utility model discloses the normally open type solenoid valve control structure of electromagnetism proportional valve through inlet solenoid valve 20 and exhaust solenoid valve 30 originally, changes the solenoid valve of the type of closing two times originally into a type of closing one time open type, lets original structure need not change again, can reach the purpose of outage pressure release, has further increased the security in the whole use, and more the accessible changes into two times open type, also can reach aforementioned purpose.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920256078.8U CN209977406U (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 |
|---|---|---|---|
| CN201920256078.8U CN209977406U (en) | 2019-02-28 | 2019-02-28 | Normally open type electromagnetic valve control structure of electromagnetic proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209977406U true CN209977406U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920256078.8U Active CN209977406U (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) | CN209977406U (en) |
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2019
- 2019-02-28 CN CN201920256078.8U patent/CN209977406U/en active Active
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