CN214946766U - Double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve - Google Patents
Double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve Download PDFInfo
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- CN214946766U CN214946766U CN202023277668.0U CN202023277668U CN214946766U CN 214946766 U CN214946766 U CN 214946766U CN 202023277668 U CN202023277668 U CN 202023277668U CN 214946766 U CN214946766 U CN 214946766U
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Abstract
The utility model discloses a double-diaphragm-cavity double-solenoid valve backpressure valve, which comprises a shell, a main valve, a reset spring, a left solenoid valve and a right solenoid valve, wherein a diaphragm is fixed in the shell to form an upper diaphragm cavity and a lower diaphragm cavity which are separated from each other, the left solenoid valve and the right solenoid valve are both two-position two-way solenoid valves, and the left solenoid valve can communicate the atmosphere with the lower diaphragm cavity or communicate a vacuum system with the lower diaphragm cavity; the right electromagnetic valve can be communicated with the atmosphere and the upper diaphragm cavity or communicated with the vacuum system and the upper diaphragm cavity; the upper and lower diaphragm chambers are connected with the main valve and used for providing force required by closing or opening the main valve; the return spring is used for the main valve to return. The vacuum repressing rate of the repressing valve is high.
Description
Technical Field
The utility model belongs to the technical field of the vacuum is repressured, especially, relate to a two solenoid valve of two diaphragm chambers are repressured valve.
Background
The double-pressure valve is a valve commonly used in the field of vacuum double-pressure, and is opened when the vacuum system needs to recover normal pressure, so that the vacuum system is recovered from a vacuum state to an atmospheric normal state and is in a closed sealing state at ordinary times.
The common structural form of the repressing valve is a single-diaphragm-cavity single-solenoid valve structure, the vacuum repressing rate of the repressing valve with the structure depends on the ratio of the diaphragm area to the inlet area (when the ratio of the diaphragm area to the inlet area is 1, the vacuum repressing rate does not exceed 50%), the larger the ratio is, the higher the vacuum repressing rate is, the larger the overall size of the valve is, and the manufacturing cost and difficulty are increased.
SUMMERY OF THE UTILITY MODEL
Purpose of the utility model
In order to solve the problem, the utility model provides a two solenoid valve repressurization valves in two diaphragm chambeies has the high characteristics of vacuum repressurization rate (when the ratio of upper and lower diaphragm area and import area is 1, vacuum repressurization rate depends on the spring force that resets, so can repressurize vacuum system to atmospheric pressure theoretically).
Technical solution of utility model
A double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve comprises a shell, a main valve, a reset spring, a left electromagnetic valve and a right electromagnetic valve, wherein a diaphragm is fixed in the shell to form an upper diaphragm cavity and a lower diaphragm cavity which are separated from each other, the left electromagnetic valve and the right electromagnetic valve are two-position two-way electromagnetic valves and are arranged on the shell, and the left electromagnetic valve can be communicated with the atmosphere and the lower diaphragm cavity or communicated with a vacuum system and the lower diaphragm cavity; the right electromagnetic valve can be communicated with the atmosphere and the upper diaphragm cavity or communicated with the vacuum system and the upper diaphragm cavity; the upper and lower diaphragms are connected with the main valve and used for providing force required by closing or opening the main valve; the return spring is used for the main valve to return.
Preferably, the left electromagnetic valve is communicated with the atmosphere and the lower diaphragm cavity or communicated with the vacuum system and the lower diaphragm cavity through the two-position two-way valve.
Preferably, the right electromagnetic valve is communicated with the atmosphere and the upper diaphragm cavity or communicated with the vacuum system and the upper diaphragm cavity through the two-position two-way valve.
Preferably, the housing has an inlet and an outlet, the outlet being connected to a vacuum system; when the main valve is closed under the action of the force in the upper diaphragm cavity, the main valve closes the inlet of the shell.
Preferably, the main valve is T-shaped, the small end of the main valve extends into the upper diaphragm cavity and the lower diaphragm cavity, and the large end of the main valve can close the inlet of the shell.
Preferably, the return spring is arranged between the bottom surface of the large end of the main valve and the shell.
The ratio of the pressure sensing area of the diaphragm to the inlet area is discussed below as 1.
When the power is off, the right electromagnetic valve cuts off the communication with the vacuum system and communicates with the atmosphere, and the upper diaphragm cavity communicates with the atmosphere through the right electromagnetic valve to provide the closing pressure of the main valve; the left electromagnetic valve is cut off from being communicated with the atmosphere and is communicated with the vacuum system, and the lower diaphragm cavity is communicated with the vacuum system through the left electromagnetic valve and does not participate in pressure transmission; at the moment, the main valve has a movement trend beneficial to closing under the action of the upper diaphragm, and the pressure sensing area of the diaphragm is equal to that of the inlet, so that the main valve is sealed under the action of the reset spring.
When the vacuum pump is electrified, the right electromagnetic valve is cut off from being communicated with the atmosphere and is communicated with the vacuum system, and the upper diaphragm cavity is communicated with the vacuum system through the right electromagnetic valve and does not participate in pressure transmission; the left electromagnetic valve cuts off the communication with the vacuum system and communicates with the atmosphere, and the lower diaphragm cavity communicates with the atmosphere through the left electromagnetic valve to provide the opening pressure of the main valve; at the moment, the main valve is opened under the action of the lower diaphragm and the inlet pressure, so that vacuum repression is realized.
In summary, when the repressurization valve based on the structural principle repressurization (the main valve is opened), the resultant force of the diaphragm and the inlet pressure sensing area overcomes the reset spring force to ensure that the main valve is opened, and the repressurization rate of the repressurization valve based on the structure can reach the atmospheric pressure because the reset spring force is negligible compared with the resultant force of the diaphragm and the inlet pressure sensing area.
The utility model has the advantages that: the vacuum repressing rate of the repressing valve is high.
Drawings
Fig. 1 is a schematic structural diagram of a double-diaphragm-cavity double-solenoid valve complex pressure valve of the present invention.
Fig. 2 is a working principle diagram of the double-diaphragm-cavity double-solenoid valve complex pressure valve of the present invention.
In fig. 1: 1. the device comprises a shell, 2, a main valve, 3, a reset spring, 4, a left electromagnetic valve, 5, a lower diaphragm cavity, 6, a right electromagnetic valve, 7 and an upper diaphragm cavity.
Detailed Description
The utility model discloses a realize through following technical scheme.
A double-diaphragm-cavity double-solenoid valve pressure-equalizing valve comprises a shell 1, a main valve 2, a reset spring 3, a left solenoid valve 4 and a right solenoid valve 6, wherein diaphragms are fixed in the shell 1 to form an upper diaphragm cavity 7 and a lower diaphragm cavity 5 which are mutually separated, the left solenoid valve 4 and the right solenoid valve 6 are two-position two-way solenoid valves and are arranged on the shell 1, and the left solenoid valve 4 can be communicated with the atmosphere and the lower diaphragm cavity 5 or communicated with a vacuum system and the lower diaphragm cavity 5; the right electromagnetic valve 6 can be communicated with the atmosphere and the upper diaphragm cavity 7 or communicated with the vacuum system and the upper diaphragm cavity 7; the upper and lower diaphragm chambers are connected with the main valve 2 and used for providing force required by closing or opening the main valve 2; the return spring 3 is used for returning the main valve 2.
The left electromagnetic valve 4 is a two-position two-way electromagnetic valve which is in a power-off state at ordinary times, the vacuum system is communicated with the lower diaphragm cavity 5, and at the moment, the pressures of the upper surface and the lower surface of a diaphragm of the lower diaphragm cavity 5 are equal, so that the upper surface and the lower surface of the diaphragm do not participate in the transmission of the motion force of the main valve 2; when the power is on, the atmosphere is communicated with the lower diaphragm cavity 5, pressure difference (high upper pressure) exists between the upper surface and the lower surface of the diaphragm cavity 5, and the main valve 2 has the tendency of facilitating the movement of the opening direction of the main valve 2 under the driving of the diaphragm under the action of the pressure difference (high upper pressure).
The right electromagnetic valve 6 is a two-position two-way electromagnetic valve which is in a power-off state at ordinary times, the atmosphere is communicated with the upper diaphragm cavity 7, pressure difference (high upper pressure) exists between the upper surface and the lower surface of the diaphragm cavity 7, and the main valve 2 has a tendency of facilitating the movement of the main valve 2 in the closing direction under the driving of the diaphragm under the action of the pressure difference (high upper pressure); when the valve is electrified, the vacuum system is communicated with the diaphragm cavity 7, and the pressures of the upper surface and the lower surface of the diaphragm of the lower diaphragm cavity 7 are equal at the moment, so that the pressure does not participate in the transmission of the motion force of the main valve 2.
The shell 1 is provided with an inlet and an outlet, the inlet is communicated with the atmosphere, and the outlet is connected with a vacuum system; when the main valve 2 is closed under the action of the internal force of the upper diaphragm chamber 7 in a power-off state, the main valve 2 closes the inlet of the shell 1; when in the power-on state, the main valve 2 is opened under the action of the internal force of the lower diaphragm chamber 5.
The main valve 2 is T-shaped, the small end of the main valve extends into the upper diaphragm cavity 7 and the lower diaphragm cavity 5, and the large end of the main valve can close the inlet of the shell 1.
The return spring 3 is arranged between the bottom surface of the large end of the main valve 2 and the shell 1.
When power is off, the right solenoid valve 6 cuts off the communication with the vacuum system and communicates with the atmosphere, and the upper diaphragm chamber 7 communicates with the atmosphere through the right solenoid valve 6 to provide the closing pressure of the main valve 2, as shown in fig. 2; the left electromagnetic valve 4 is cut off from being communicated with the atmosphere and is communicated with the vacuum system, and the lower diaphragm cavity 5 is communicated with the vacuum system through the left electromagnetic valve 4 and does not participate in pressure transmission; at this time, the main valve 2 is closed under the action of the upper membrane 7, and sealing is realized.
When the power is on, the right electromagnetic valve 6 is cut off from being communicated with the atmosphere and is communicated with the vacuum system, and the cavity of the upper diaphragm 7 is communicated with the vacuum system through the right electromagnetic valve 6 and does not participate in the pressure transmission; the left electromagnetic valve 4 cuts off the communication with the vacuum system and communicates with the atmosphere, and the lower diaphragm cavity 5 communicates with the atmosphere through the left electromagnetic valve 4 to provide the opening pressure of the main valve 2; at the moment, the main valve 2 is opened under the action of the lower membrane 7, and vacuum repression is realized.
The above embodiments are only for illustrating the technical conception and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, so as not to limit the protection scope of the present invention, and all the equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.
Claims (6)
1. The double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve is characterized by comprising a shell (1), a main valve (2), a reset spring (3), a left electromagnetic valve (4) and a right electromagnetic valve (6), wherein diaphragms are fixed in the shell (1) to form an upper diaphragm cavity (7) and a lower diaphragm cavity (5) which are separated from each other, the left electromagnetic valve (4) and the right electromagnetic valve (6) are both two-position two-way electromagnetic valves and are arranged on the shell (1), and the left electromagnetic valve (4) can communicate the atmosphere with the lower diaphragm cavity (5) or communicate a vacuum system with the lower diaphragm cavity (5); the right electromagnetic valve (6) can be communicated with the atmosphere and the upper diaphragm cavity (7) or communicated with the vacuum system and the upper diaphragm cavity (7); the upper and lower diaphragms are connected with the main valve (2) and used for providing force required by closing or opening the main valve (2); the return spring (3) is used for returning the main valve (2).
2. The dual-diaphragm dual-chamber dual-solenoid valve complex pressure valve as claimed in claim 1, wherein the left solenoid valve (4) communicates the atmosphere with the lower diaphragm chamber (5) or communicates the vacuum system with the lower diaphragm chamber (5) through a two-position two-way valve.
3. A dual-diaphragm dual-chamber dual-solenoid valve pressure-equalizing valve according to claim 1, wherein the right solenoid valve (6) communicates the atmosphere with the upper diaphragm chamber (7) or communicates the vacuum system with the upper diaphragm chamber (7) through a two-position two-way valve.
4. A dual diaphragm chamber dual solenoid valve dual pressure valve according to claim 1 wherein the housing (1) has an inlet and an outlet, the outlet being connected to a vacuum system; when the main valve (2) is closed under the action of the internal force of the upper diaphragm cavity (7), the main valve (2) seals the inlet of the shell (1).
5. A dual-diaphragm dual-chamber dual-solenoid valve backpressure valve according to claim 4, characterized in that the main valve (2) is T-shaped, the small end of the main valve extends into the upper diaphragm chamber (7) and the lower diaphragm chamber (5), and the large end of the main valve can close the inlet of the housing (1).
6. A double-diaphragm-chamber double-solenoid valve pressure-restoring valve according to claim 5, characterized in that the restoring spring (3) is arranged between the bottom surface of the big end of the main valve (2) and the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277668.0U CN214946766U (en) | 2020-12-30 | 2020-12-30 | Double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023277668.0U CN214946766U (en) | 2020-12-30 | 2020-12-30 | Double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214946766U true CN214946766U (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023277668.0U Active CN214946766U (en) | 2020-12-30 | 2020-12-30 | Double-diaphragm-cavity double-electromagnetic-valve pressure-equalizing valve |
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| Country | Link |
|---|---|
| CN (1) | CN214946766U (en) |
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2020
- 2020-12-30 CN CN202023277668.0U patent/CN214946766U/en active Active
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