Microswitch pressure sensor

Abstract

The utility model relates to the technical field of pressure detection, in particular to a microswitch pressure sensor, which comprises a shell and an internal component. The internal assembly comprises a micro switch and a safety valve; the micro switch is a micro switch; the output end of the safety valve is provided with a backpressure adjusting screwed plug; the safety valve comprises a valve body and a valve core rod; the valve body is in a hollow cylinder shape. The valve core rod is a cylindrical body and is arranged in the center of the valve body; a buffer spring is wound outside the valve core rod; a circular positioning plate is arranged at the input end of the valve core rod; a buffer gasket is arranged between the buffer spring and the circular positioning plate; a connecting gasket is arranged outside the input end of the valve body; the top end of the valve core rod is in contact with the micro switch; the device utilizes the microelectronic technology, has the advantages of reduced volume, short stroke, sensitive action and improved performance, and is suitable for extreme environments.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure detection, in particular to a micro switch pressure sensor. Background Art

[0002] The existing pressure detection device is composed of a shell, a pressure sensor, a power supply, a manual switch and wires. When testing pressure, the operator needs to turn on the power switch, connect the power, and the pressure sensor outputs a current or voltage signal. When not in use, turn off the power switch, otherwise the power will always be on and consume power. For the convenience of mobile use, when using a small-capacity dry cell as a power source, the general pressure detection device cannot automatically connect to the power supply for testing when there is pressure input, and can automatically disconnect the power supply when there is no pressure input, so as to save power and extend the use time. When the pressure detection device is used to measure the oil pressure or air pressure in the system pipeline, the input pressure may be too high, and the existing sensor cannot buffer the pressure, causing the pressure to damage other pipelines or components in the system. Utility Model Content

[0003] The purpose of this application is to provide a micro switch pressure sensor, aiming to solve the problems in the prior art.

[0004] An embodiment of the present application provides a microswitch pressure sensor, comprising an outer shell and an internal component; the internal component comprises a micro switch and a safety valve; the micro switch is a micro switch; the output end of the safety valve is provided with a back pressure regulating plug; the safety valve comprises a valve body and a valve core rod; the valve body is a hollow cylinder; the valve core rod is a columnar body and is arranged at the center of the valve body; a buffer spring is wound around the outside of the valve core rod; the input end of the valve core rod is provided with a circular positioning plate; a buffer gasket is provided between the buffer spring and the circular positioning plate; a connecting gasket is provided on the outside of the valve body input end; the top of the valve core rod is in contact with the micro switch; the outer shell is a heat shrink tubing; a power supply and an alarm device are provided in the inner shell; the micro switch, power supply and alarm device are connected in series; an air inlet is provided on the outer shell; the air inlet is connected to the output end of the safety valve.

[0005] Furthermore, the alarm device includes a warning light on the outside of the housing.

[0006] Furthermore, the buffer gasket is an ultra-thin stainless steel gasket; at least one buffer gasket is provided.

[0007] Furthermore, the connection gasket is a copper gasket.

[0008] Furthermore, the micro switch may also be a mini push switch.

[0009] Furthermore, the micro switch may also be electrically connected to a second pressure sensor; and a medium input end of the second pressure sensor is communicated with the air inlet.

[0010] The beneficial effects of the utility model are as follows: the utility model can automatically turn on the power supply when there is pressure input, so that the pressure sensor starts to work and outputs a signal for use by the pressure display and pressure alarm device; when there is no pressure input or the pressure is zero, the power supply is automatically disconnected and the pressure can be automatically reset, thereby saving battery power and extending the service life; at the same time, a safety valve core is provided to release the pressure in the system to protect the system pipelines and other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] Figure 2 This is a circuit diagram of the utility model when used alone.

[0013] Figure 3 This is a circuit diagram of the utility model used in conjunction with a second pressure sensor.

[0014] In the picture:

[0015] 1. Buffer spring; 2. Connecting gasket; 3. Buffer gasket; 4. Micro switch; 5. Valve body; 6. Valve core rod; 7. Back pressure adjustment plug; 8. Alarm device; 9. Warning light; 10. Power supply; 11. Second pressure sensor; 12. Pressure display circuit; 13. Housing; 130. Air inlet; 14. Circular positioning plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figure 1 and Figure 2The micro switch pressure sensor shown in the figure includes a housing 13 and internal components; the internal components include a micro switch 4 and a safety valve; the micro switch 4 is a micro switch; the micro switch has the characteristics of small contact spacing, short action stroke, and small pressing force. It can be connected under the action of small pressure and send out an alarm signal; it is disconnected when there is no pressure; the output end of the safety valve is provided with a back pressure regulating plug 7; the safety valve includes a valve body 5 and a valve core rod 6; the valve body 5 is a hollow cylindrical body; the valve core rod 6 is a columnar body and is arranged at the center of the valve body 5; the valve core rod 6 A buffer spring 1 is wound around the outside; a circular positioning plate 14 is provided at the input end of the valve core rod 6; a buffer gasket 3 is provided between the buffer spring 1 and the circular positioning plate 14; a connecting gasket 2 is provided on the outside of the input end of the valve body 5; the top of the valve core rod 6 is in contact with the micro switch 4; the outer shell 13 is a heat shrink tubing; a power supply 10 and an alarm device 8 are provided in the outer shell 13; the micro switch 4, power supply 10 and alarm device 8 are connected in series; an air inlet 130 is provided on the outer shell 13; the air inlet 130 is communicated with the output end of the safety valve.

[0018] The alarm device 8 includes a warning light 9 on the outside of the housing.

[0019] The buffer gasket 3 is an ultra-thin stainless steel gasket; at least one buffer gasket 3 is provided.

[0020] The connecting pad 2 is a copper pad.

[0021] The micro switch 4 may also be a mini push switch.

[0022] like Figure 3 As shown, the micro switch 4 can also be electrically connected to the second pressure sensor 11; the medium input end of the second pressure sensor 11 is connected to the air inlet 130; the second pressure sensor 11 is an existing pressure sensor, and this setting is an auxiliary setting. The signal output end of the second pressure sensor 11 can be connected to the pressure display circuit 12 to provide pressure data.

[0023] The operating principle of a microswitch pressure sensor is based on pressure changes triggering a microswitch. For example, to test the pressure level of a medium in a pipeline, the medium inlet of the pressure sensor is installed on the pipeline system to be tested. When the pressure in the system exceeds or falls below the rated safety pressure, the safety valve core (6) moves instantaneously, pushing the microswitch connector on or off via the valve core stem (6). This releases pressure in the system, protecting the system piping and other components. When the pressure returns to the rated value, the safety valve core resets, automatically resetting the microswitch. Leveraging the microswitch's rapid switching characteristics, the device can be reduced in size, improved in performance, and suitable for extreme environments.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A micro switch pressure sensor, characterized in that: It comprises an outer shell and internal components; the internal components comprise a micro switch and a safety valve; the micro switch is a micro switch; a back pressure regulating plug is provided at the output end of the safety valve; the safety valve comprises a valve body and a valve core rod; the valve body is a hollow cylinder; the valve core rod is a columnar body and is arranged at the center of the valve body; a buffer spring is wound around the outside of the valve core rod; a circular positioning plate is provided at the input end of the valve core rod; a buffer gasket is provided between the buffer spring and the circular positioning plate; a connecting gasket is provided on the outside of the valve body input end; the top end of the valve core rod is in contact with the micro switch; the outer shell is a heat shrink tubing; a power supply and an alarm device are provided in the outer shell; the micro switch, power supply and alarm device are connected in series; an air inlet is provided on the outer shell; the air inlet is communicated with the output end of the safety valve.

2. The micro switch pressure sensor according to claim 1, characterized in that: The alarm device includes a warning light outside the housing.

3. The micro switch pressure sensor according to claim 1, characterized in that: The buffer gasket is an ultra-thin stainless steel gasket; at least one buffer gasket is provided.

4. The micro switch pressure sensor according to claim 1, characterized in that: The connecting gasket is a copper gasket.

5. The micro switch pressure sensor according to claim 1, characterized in that: The micro switch may also be a mini push switch.

6. The micro switch pressure sensor according to claim 1, characterized in that: The micro switch may also be electrically connected to a second pressure sensor; a medium input end of the second pressure sensor is connected to the air inlet.

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