Vacuum gauge with adjustable range

Abstract

The utility model provides a range-adjustable vacuum gauge, which relates to the field of vacuum gauges and comprises a protective shell, the top of the protective shell is provided with a shell cover, and the inner wall of the protective shell is fixedly connected with a first electromagnetic shielding sheet; the electromagnetic valve is controlled by the microcontroller, the through pipe can be switched on and off, the vacuum degree of the environment can be monitored in cooperation with the vacuum sensor, external electromagnetic interference is effectively shielded through the contact design of the first electromagnetic shielding sheet and the second electromagnetic shielding sheet, the accuracy and stability of vacuum measurement are improved, and the working efficiency is improved. Furthermore, the temperature in the protective shell can be monitored in real time through the temperature sensor, and the work of the electric heating tube is controlled through the microcontroller, so that the temperature in the protective shell is adjusted, the vacuum sensor is ensured to operate at the optimal working temperature, and the service life of the vacuum sensor is prolonged. Therefore, while the measurement precision and reliability are improved, the equipment can be suitable for being used in a low-temperature environment, and the application range of the equipment is effectively widened.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum gauges, specifically a range-adjustable vacuum gauge. Background Technology

[0002] In modern industrial production and scientific research, the accurate measurement and control of vacuum level is crucial for many processes, which leads to the use of vacuum gauges to detect the ambient vacuum level in advance.

[0003] Traditional vacuum gauges work by sensing changes in gas molecules or ions in the vacuum environment through internal sensors. The sensors convert the sensed signals into electrical signals and transmit them to the vacuum gauge's processing unit. The processing unit processes and calculates the received signals to determine the current vacuum level, thus achieving vacuum detection. However, traditional vacuum gauges often have many limitations when dealing with complex environments. They are difficult to adjust to external conditions, which reduces their measurement range. For example, in complex electromagnetic environments or low-temperature environments, the sensors are easily affected by electromagnetic interference or low temperatures, leading to distorted measurement data and affecting measurement stability.

[0004] In summary, this invention provides a range-adjustable vacuum gauge to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An adjustable vacuum gauge includes a protective housing, a cover at the top of the housing, a first electromagnetic shielding sheet fixedly connected to the inner wall of the housing, a vacuum sensor inside the housing, a microcontroller on the left side of the housing, a temperature sensor on the back side of the housing, heating elements at the front and rear ends of the lower end of the housing, one side of the microcontroller and one end of the heating elements connected to the first electromagnetic shielding sheet, a second electromagnetic shielding sheet fixedly connected to the bottom of the cover, the bottom of the second electromagnetic shielding sheet contacting the first electromagnetic shielding sheet, a through pipe at the top of the cover, and a solenoid valve connected to the surface of the through pipe, the input end of the solenoid valve connected to the output end of the microcontroller, the vacuum sensor bidirectionally connected to the microcontroller, the output end of the temperature sensor connected to the input end of the microcontroller, and the output end of the microcontroller connected to the input end of the heating elements.

[0007] Furthermore, in this utility model, a display screen is fixedly connected to the upper end of the front of the protective shell, and a switch button is provided at the lower end of the front of the protective shell. The output end of the switch button is connected to the input end of the microcontroller, and the output end of the microcontroller is connected to the input end of the display screen.

[0008] Furthermore, in this utility model, a wiring groove is provided at the lower right end of the protective shell, and a sealing plate is movably connected to the lower right end of the protective shell and on one side of the wiring groove via a damping pivot, and the sealing plate is used to close and block the wiring groove.

[0009] Furthermore, in this utility model, a limiting seat is provided on one side of the inner cavity of the protective shell, and one side of the limiting seat is fixedly connected to the first electromagnetic shielding sheet, and the bottom of the vacuum sensor extends into the inner cavity of the limiting seat.

[0010] Furthermore, in this utility model, a sealing ring is fixedly connected to the bottom of the shell cover and to the surface of the second electromagnetic shielding sheet. The bottom of the sealing ring is in contact with the top of the protective shell. Both the second electromagnetic shielding sheet and the first electromagnetic shielding sheet are made of stainless steel.

[0011] Furthermore, in this utility model, screws are movably connected to all four sides of the top of the shell cover, and screw holes are opened on all four sides of the top of the protective shell. The bottom of the screw extends into the inner cavity of the screw hole and is threadedly connected to the inner cavity of the screw hole.

[0012] Beneficial effects: This utility model has the following beneficial effects:

[0013] This invention utilizes a microcontroller to control a solenoid valve, enabling the opening and closing of the passage. Combined with a vacuum sensor, it can monitor the vacuum level of the environment. The contact design of the first and second electromagnetic shielding sheets effectively shields against external electromagnetic interference, improving the accuracy and stability of vacuum measurements. This allows the equipment to be used in electromagnetically complex environments. Furthermore, a temperature sensor monitors the temperature inside the protective housing in real time, and the microcontroller controls the operation of the heating element to regulate the temperature within the housing, ensuring the vacuum sensor operates at its optimal temperature. This improves measurement accuracy and reliability while allowing the equipment to be used in low-temperature environments, effectively expanding its application range. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the protective shell of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the shell cover and the second electromagnetic shielding sheet in the separated state of this utility model;

[0017] Figure 4 This is a schematic diagram of the system principle of this utility model.

[0018] In the picture:

[0019] 1. Protective shell; 2. Shell cover; 3. First electromagnetic shielding sheet; 4. Vacuum sensor; 5. Microcontroller; 6. Temperature sensor; 7. Heating element; 8. Second electromagnetic shielding sheet; 9. Through pipe; 10. Solenoid valve; 11. Display screen; 12. Switch button; 13. Wiring groove; 14. Sealing plate; 15. Limit seat; 16. Sealing ring. Detailed Implementation

[0020] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0021] Example 1

[0022] like Figure 1-4 The first embodiment of this utility model is shown, which provides a range-adjustable vacuum gauge, including a protective shell 1, a shell cover 2 on the top of the protective shell 1, a first electromagnetic shielding sheet 3 fixedly connected to the inner wall of the protective shell 1, a vacuum sensor 4 in the inner cavity of the protective shell 1, a microcontroller 5 on the left side of the inner cavity of the protective shell 1, a temperature sensor 6 on the back side of the inner cavity of the protective shell 1, and electric heating tubes 7 at the front and rear ends of the lower end of the inner cavity of the protective shell 1. One side of the microcontroller 5 and one end of the electric heating tube 7 are both connected to the first electromagnetic shielding sheet 3. A second electromagnetic shielding sheet 8 is fixedly connected to the bottom of the shell cover 2, and the bottom of the second electromagnetic shielding sheet 8 contacts the first electromagnetic shielding sheet 3. A through pipe 9 is connected to the top of the shell cover 2, and a solenoid valve 10 is connected to the surface of the through pipe 9. The input end of the solenoid valve 10 is connected to the output end of the microcontroller 5. The vacuum sensor 4 and the microcontroller 5 are bidirectionally connected, and the output end of the temperature sensor 6 is connected to the input end of the microcontroller 5. The output end of the microcontroller 5 is connected to the input end of the electric heating tube 7.

[0023] like Figure 1-4As shown, the contact between the first electromagnetic shielding sheet 3 and the second electromagnetic shielding sheet 8 creates an electromagnetic interference-proof space inside, thereby improving the accuracy and stability of the vacuum sensor 4 during measurement. Furthermore, in low-temperature environments, the temperature sensor 6 can monitor the temperature inside the protective housing 1 in real time. The temperature sensor 6 is a Lufft sensor. The WS700 temperature sensor 6 transmits monitoring data to the microcontroller 5 in real time. The microcontroller 5 analyzes the temperature data, and if the temperature is lower than the preset value, it controls the heating element 7 to heat the inside of the protective shell 1 until the temperature reaches the preset value. This ensures that the vacuum sensor 4 operates at its optimal temperature, thereby improving measurement accuracy and reliability while allowing the equipment to be used in low-temperature environments, effectively increasing its application range. The vacuum sensor 4 senses the ambient vacuum level and transmits the vacuum signal to the microcontroller 5. The microcontroller 5 processes and calculates the received vacuum signal to obtain the current vacuum level value. The microcontroller 5 uses an ESP32 series microcontroller, which can process signals from components such as the vacuum sensor 4 and temperature sensor 6, and perform intelligent control according to a preset program, improving the automation level of the equipment.

[0024] Example 2

[0025] Reference Figure 1 , 2 4 and 5 represent the second embodiment of this utility model, which is based on the previous embodiment.

[0026] In this embodiment, a display screen 11 is fixedly connected to the upper end of the front of the protective shell 1, and a switch button 12 is provided at the lower end of the front of the protective shell 1. The output end of the switch button 12 is connected to the input end of the microcontroller 5, and the output end of the microcontroller 5 is connected to the input end of the display screen 11.

[0027] A wiring groove 13 is provided at the lower right end of the protective shell 1. A sealing plate 14 is movably connected to the lower right end of the protective shell 1 and on one side of the wiring groove 13 via a damping pivot. The sealing plate 14 is used to close and shield the wiring groove 13.

[0028] like Figure 1 , 2 As shown in Figure 4, the display screen 11 can intuitively display the measurement results and operating status, while the switch button 12 facilitates the operator to switch the equipment on and off, effectively improving the ease of use of the equipment. This allows the operator to easily view the measurement results and control the working status of the equipment. The wiring slot 13 facilitates the connection of external power and signal lines, and the sealing plate 14 can close the wiring slot 13 when it is not in use, thus protecting the wiring slot 13.

[0029] Example 3

[0030] Reference Figure 1-3 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0031] In this embodiment, a limiting seat 15 is provided on one side of the inner cavity of the protective shell 1, and one side of the limiting seat 15 is fixedly connected to the first electromagnetic shielding sheet 3. The bottom of the vacuum sensor 4 extends into the inner cavity of the limiting seat 15.

[0032] A sealing ring 16 is fixedly connected to the bottom of the cover 2 and on the surface of the second electromagnetic shielding sheet 8. The bottom of the sealing ring 16 is in contact with the top of the protective cover 1. Both the second electromagnetic shielding sheet 8 and the first electromagnetic shielding sheet 3 are made of stainless steel.

[0033] Screws are movably connected around the top of the cover 2, and screw holes are opened around the top of the protective shell 1. The bottom of the screw extends into the inner cavity of the screw hole and is threadedly connected to the inner cavity of the screw hole.

[0034] like Figure 1-3 As shown, the limiting seat 15 provides stable support and positioning for the vacuum sensor 4, preventing the vacuum sensor 4 from shaking or shifting during the measurement process, which would affect the accuracy of the measurement results.

[0035] The sealing ring 16 is located between the cover 2 and the protective shell 1, which ensures the sealing of the connection between the two. The cover 2 and the protective shell 1 are connected by screws and screw holes, which is firm and reliable, easy to disassemble and install, and convenient for internal maintenance and component replacement.

[0036] In use, when facing complex electromagnetic environments, by adding a first electromagnetic shielding plate 3 and a second electromagnetic shielding plate 8 inside the protective shell 1 and at the bottom of the shell cover 2, and then connecting the shell cover 2 with the protective shell 1, the contact between the first electromagnetic shielding plate 3 and the second electromagnetic shielding plate 8 creates an electromagnetic interference-proof space inside. This improves the accuracy and stability of the vacuum sensor 4 during measurement. Furthermore, in low-temperature environments, the temperature sensor 6 can monitor the temperature inside the protective shell 1 in real time and transmit the monitoring data to the microcontroller 5. The microcontroller 5 analyzes the temperature data, and if the temperature is lower than a preset value, it controls the heating element 7 to heat the inside of the protective shell 1 until the temperature reaches the preset value, ensuring the vacuum sensor 4 operates smoothly. Operating at the optimal working temperature improves measurement accuracy and reliability while allowing the equipment to be used in low-temperature environments, effectively increasing its application range. When detecting vacuum, the operator presses the switch button 12, which transmits a signal to the microcontroller 5, causing the microcontroller 5 to activate the solenoid valve 10 and the vacuum sensor 4. The opening of the solenoid valve 10 connects the protective shell 1 to the external environment. The vacuum sensor 4 senses the ambient vacuum level and transmits the vacuum signal to the microcontroller 5. The microcontroller 5 processes and calculates the received vacuum signal to obtain the current vacuum level value, which is then transmitted to the display screen 11 for easy viewing, thus completing the vacuum level detection operation.

[0037] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A range adjustable vacuum gauge comprising a protective housing (1), characterized in that: The protective shell (1) is provided with a cover (2) on its top. A first electromagnetic shielding sheet (3) is fixedly connected to the inner wall of the protective shell (1). A vacuum sensor (4) is provided in the inner cavity of the protective shell (1). A microcontroller (5) is provided on the left side of the inner cavity of the protective shell (1). A temperature sensor (6) is provided on the back side of the inner cavity of the protective shell (1). Electric heating tubes (7) are provided at the front and rear ends of the lower end of the inner cavity of the protective shell (1). One side of the microcontroller (5) and one end of the electric heating tube (7) are both connected to the first electromagnetic shielding sheet (3). The bottom of the cover (2) is... The second electromagnetic shielding sheet (8) is fixedly connected to the part, and the bottom of the second electromagnetic shielding sheet (8) is in contact with the first electromagnetic shielding sheet (3). The top of the shell cover (2) is connected to a through pipe (9), and a solenoid valve (10) is connected to the surface of the through pipe (9). The input end of the solenoid valve (10) is connected to the output end of the microcontroller (5). The vacuum sensor (4) is bidirectionally connected to the microcontroller (5), and the output end of the temperature sensor (6) is connected to the input end of the microcontroller (5). The output end of the microcontroller (5) is connected to the input end of the heating tube (7).

2. The range adjustable vacuum gauge according to claim 1, wherein: The upper end of the front of the protective shell (1) is fixedly connected to the display screen (11), and the lower end of the front of the protective shell (1) is provided with a switch button (12). The output end of the switch button (12) is connected to the input end of the microcontroller (5), and the output end of the microcontroller (5) is connected to the input end of the display screen (11).

3. The range adjustable vacuum gauge according to claim 1, wherein: A wiring groove (13) is provided at the lower right end of the protective shell (1). A sealing plate (14) is movably connected to the lower right end of the protective shell (1) and located on one side of the wiring groove (13) via a damping pivot. The sealing plate (14) is used to seal and shield the wiring groove (13).

4. The range adjustable vacuum gauge according to claim 1, wherein: A limiting seat (15) is provided on one side of the inner cavity of the protective shell (1), and one side of the limiting seat (15) is fixedly connected to the first electromagnetic shielding sheet (3). The bottom of the vacuum sensor (4) extends into the inner cavity of the limiting seat (15).

5. The range adjustable vacuum gauge according to claim 1, wherein: A sealing ring (16) is fixedly connected to the bottom of the cover (2) and the surface of the second electromagnetic shielding sheet (8). The bottom of the sealing ring (16) is in contact with the top of the protective shell (1). The second electromagnetic shielding sheet (8) and the first electromagnetic shielding sheet (3) are both made of stainless steel.

6. The range adjustable vacuum gauge according to claim 1, wherein: Screws are movably connected to the top of the cover (2) and screw holes are opened on the top of the protective shell (1). The bottom of the screw extends into the inner cavity of the screw hole and is threadedly connected to the inner cavity of the screw hole.

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