CN214098877U - Pressure relay principle demonstration device - Google Patents
Pressure relay principle demonstration device Download PDFInfo
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- CN214098877U CN214098877U CN202120260383.1U CN202120260383U CN214098877U CN 214098877 U CN214098877 U CN 214098877U CN 202120260383 U CN202120260383 U CN 202120260383U CN 214098877 U CN214098877 U CN 214098877U
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- pressure relay
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- gear pump
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Abstract
A pressure relay principle demonstration device belongs to the field of hydraulic control. The utility model discloses be equipped with pressure relay, be equipped with micro-gap switch and current conducting plate in the pressure relay top, micro-gap switch one side is passed through the wire and is linked to each other with one side of the bulb that sets up outside pressure relay, and the opposite side of bulb links to each other with one side of battery, and the opposite side of battery links to each other with current conducting plate one side, and current conducting plate and micro-gap switch contactless. The current conducting plate below is equipped with the ejector pin, and the ejector pin below is equipped with the piston, and the piston below is equipped with the oil inlet, and the oil inlet below is equipped with the check valve, and the check valve links to each other with one side of gear pump, and the opposite side of gear pump links to each other with the side of oil tank, and the top of oil tank links to each other through the draining mouth that oil return pipe and pressure relay side set up. And a spring is arranged on the outer side of the ejector rod and applies downward movement force to the piston. The utility model discloses can directly perceivedly see the working process that hydraulic signal turned into signal of telecommunication output, help the student master pressure relay and constitute and the principle. The manufacturing is simple and the cost is low.
Description
Technical Field
The utility model belongs to the hydraulic control field, concretely relates to pressure relay principle presentation device.
Background
The explanation of pressure relay in the current teaching uses the explanation in the aspect of characters, picture and animation more, is unfavorable for the student to understand, can't make the audio-visual process that hydraulic signal turned into the signal of telecommunication output of seeing of student.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pressure relay principle presentation device, the device can audio-visual demonstration pressure relay's theory of operation, and simple manufacture, and the cost is lower.
The utility model provides a device that technical problem adopted is equipped with pressure relay, is equipped with micro-gap switch and current conducting plate in the pressure relay top, and micro-gap switch one side links to each other through wire and the bulb one side that sets up outside pressure relay, and the opposite side of bulb links to each other with one side of battery, and the opposite side of battery links to each other with current conducting plate one side, and the current conducting plate is contactless with micro-gap switch. The current conducting plate below is equipped with the ejector pin, and the ejector pin below is equipped with the piston, and the piston below is equipped with the oil inlet, and the oil inlet below is equipped with the check valve, and the check valve links to each other with one side of gear pump, and the opposite side of gear pump links to each other with the side of oil tank, and the top of oil tank links to each other through the draining mouth that oil return pipe and pressure relay side set up. And a spring is arranged on the outer side of the ejector rod and applies downward movement force to the piston.
Furthermore, the side of the conducting plate, which is not connected with the conducting wire, is movably arranged and can be connected with the microswitch.
Furthermore, the top of the oil tank is provided with an oil filling port.
Further, the number of gears in the gear pump is 2.
Further, the gear pump is connected with a motor, and the motor is connected with a power supply.
The working process is as follows: when the gear pump works, pressure oil enters from an oil inlet of the pressure relay through the one-way valve, the piston is pushed to move upwards, and redundant oil returns to the oil tank through the oil drainage port. When the pressure of the oil inlet is larger than the elastic force of the spring, the ejector rod moves upwards to close the micro switch, an electric circuit is connected, and the bulb is lightened. When the gear pump stops supplying oil, the push rod moves downwards under the action of the spring, the micro switch is separated, the electric circuit is disconnected, and the bulb is turned off.
Has the advantages that: the utility model discloses can directly perceivedly see the working process that hydraulic signal turned into signal of telecommunication output, help the student master pressure relay and constitute and the principle. The manufacturing is simple and the cost is low.
Drawings
Fig. 1 is a structural diagram of the present invention.
The energy-saving device comprises a lamp bulb 1, a micro switch 2, a conductive plate 3, a pressure relay 4, an oil drain port 5, an oil return pipe 6, an oil filling port 7, an oil tank 8, a gear pump 9, a one-way valve 10, an oil inlet 11, a piston 12, a spring 13, a push rod 14, a push rod 15 and a battery.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
This embodiment is equipped with pressure relay 4, is equipped with micro-gap switch 2 and current conducting plate 3 in the 4 tops of pressure relay, and micro-gap switch 2 one side is passed through the wire and is linked to each other with the 1 one side of bulb that sets up outside pressure relay 4, and the opposite side of bulb 1 links to each other with one side of battery 15, and the opposite side of battery 15 links to each other with current conducting plate 3 one side, and current conducting plate 3 and micro-gap switch 2 contactless. An ejector rod 14 is arranged below the current-conducting plate 3, a piston 12 is arranged below the ejector rod 14, an oil inlet 11 is arranged below the piston 12, a check valve 10 is arranged below the oil inlet 11, the check valve 10 is connected with one side of a gear pump 9, the other side of the gear pump 9 is connected with the side face of an oil tank 8, and the top of the oil tank 8 is connected with an oil drainage port 5 arranged on the side face of the pressure relay 4 through an oil return pipe 6. The ejector rod 14 is provided with a spring 13 on the outer side, and the spring 13 applies downward movement force to the piston 12. Wherein the side of the conductive plate 3 which is not connected with the conductive wire is movably arranged and can be connected with the microswitch 2. The top of the oil tank 8 is provided with an oil filling port 7. The number of gears in the gear pump 9 is 2. The gear pump 9 is connected with a motor, and the motor is connected with a power supply.
Example 2
The working process is as follows: when the gear pump 9 works, pressure oil enters from an oil inlet 11 of the pressure relay 4 through the one-way valve 10, the piston 12 is pushed to move upwards, and redundant oil returns to the oil tank 8 through the oil drainage port 5. When the pressure of the oil inlet 11 is larger than the elastic force of the spring 13, the ejector rod 14 moves upwards to close the micro switch 2, the electric circuit is connected, and the bulb 1 is lightened. When the gear pump 9 stops supplying oil, the push rod 14 moves downwards under the action of the spring 13, the micro switch 2 is separated, the electric circuit is disconnected, and the lamp bulb 1 is extinguished.
The foregoing embodiments are provided for illustration and description of the invention and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed.
Claims (5)
1. A pressure relay principle demonstration device is characterized in that a pressure relay (4) is arranged, a microswitch (2) and a conductive plate (3) are arranged in the top of the pressure relay (4), one side of the microswitch (2) is connected with one side of a bulb (1) arranged outside the pressure relay (4) through a lead, the other side of the bulb (1) is connected with one side of a battery (15), the other side of the battery (15) is connected with one side of the conductive plate (3), and the conductive plate (3) is not in contact with the microswitch (2); a mandril (14) is arranged below the current-conducting plate (3), a piston (12) is arranged below the mandril (14), an oil inlet (11) is arranged below the piston (12), a check valve (10) is arranged below the oil inlet (11), the check valve (10) is connected with one side of a gear pump (9), the other side of the gear pump (9) is connected with the side surface of an oil tank (8), and the top of the oil tank (8) is connected with an oil drainage port (5) arranged on the side surface of the pressure relay (4) through an oil return pipe (6); a spring (13) is arranged on the outer side of the ejector rod (14), and the spring (13) applies downward movement force to the piston (12).
2. A pressure relay principle demonstration device according to claim 1 characterized in that the non-wired side of the conductive plate (3) is movably arranged to be connected to the microswitch (2).
3. A pressure relay principle demonstration device according to claim 1 characterized in that the top of the oil tank (8) is provided with an oil filling opening (7).
4. A pressure relay principle demonstration device according to claim 1 characterised in that the number of gears in the gear pump (9) is 2.
5. A pressure relay principle demonstration device according to claim 1 characterised in that the gear pump (9) is connected to an electric motor which is connected to a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120260383.1U CN214098877U (en) | 2021-01-29 | 2021-01-29 | Pressure relay principle demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120260383.1U CN214098877U (en) | 2021-01-29 | 2021-01-29 | Pressure relay principle demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214098877U true CN214098877U (en) | 2021-08-31 |
Family
ID=77439944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120260383.1U Active CN214098877U (en) | 2021-01-29 | 2021-01-29 | Pressure relay principle demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214098877U (en) |
-
2021
- 2021-01-29 CN CN202120260383.1U patent/CN214098877U/en active Active
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