Direction-adjustable wireless pressure transmitter

Abstract

A direction-adjustable wireless pressure transmitter comprises a pressure acquisition unit, a shell unit, a control unit and a display screen, the pressure acquisition unit is arranged at the bottom of the shell unit, the upper end of the pressure acquisition unit is provided with a tubular shaft type rotating structure, the bottom of the shell unit is provided with a rotating interface, and the rotating interface is connected with the control unit. The tubular shaft type rotating structure is coaxially and rotatably installed in the rotating connector, a limiting structure used for limiting the rotating angle of the shell unit is arranged between the tubular shaft type rotating structure and the rotating connector, the control unit is installed in the shell unit, and the display screen is installed on the front side of the shell unit. The control unit is connected with the pressure acquisition unit and the display screen through wires, and the control unit is connected with the remote monitoring platform through wireless communication. According to the utility model, wireless transmission remote monitoring can be realized, the size is small, and the orientation of the display screen can be adjusted to the orientation suitable for observation after installation.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a direction-adjustable wireless pressure transmitter. Background Art

[0002] Pressure transmitter is the most commonly used sensor in industrial practice. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electricity, ships, machine tools, pipelines and many other industries. It can convert the physical pressure parameters of gas, liquid and other pressure parameters sensed by the pressure measuring element sensor into standard electrical signals (such as 4-20mADC, etc.) to provide secondary instruments such as indicator alarms, recorders, regulators for measurement, indication and process adjustment.

[0003] There are many pressure transmitter products on the market, and some products are still traditional stand-alone acquisition or wired transmission to the controller, which cannot achieve remote monitoring. In particular, the pressure transmitter can display the test value and working status on the display screen. The installation environment of the pressure transmitter is complex. In some narrow spaces, after the product is installed and tightened, the display screen may face away from the observer and cannot be adjusted, making it difficult for personnel to observe and repair.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The purpose of the utility model is to provide a direction-adjustable wireless pressure transmitter in view of the deficiencies in the prior art. The utility model can solve the problem that the direction of the display screen cannot be adjusted, and can also realize wireless transmission remote monitoring.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a direction-adjustable wireless pressure transmitter, including a pressure acquisition unit, a housing unit, a control unit and a display screen, the pressure acquisition unit is arranged at the bottom of the housing unit, a tubular shaft type rotating structure is arranged at the upper end of the pressure acquisition unit, a rotating interface is arranged at the bottom of the housing unit, the tubular shaft type rotating structure is coaxially installed in the rotating interface, a limiting structure for limiting the rotation angle of the housing unit is arranged between the tubular shaft type rotating structure and the rotating interface, the control unit is installed in the housing unit, the display screen is installed on the front side of the housing unit, the control unit is connected to the pressure acquisition unit and the display screen by wires respectively, and the control unit is connected to the remote monitoring platform by wireless communication.

[0007] Based on the above, the pressure acquisition unit is a diffusion pressure sensor.

[0008] Based on the above, the tubular shaft rotating structure includes a three-step tubular shaft coaxially arranged on the upper end of the pressure collection unit, and the outer diameter of the three-step tubular shaft decreases from top to bottom;

[0009] Counting from top to bottom, a first rotating ring groove is circumferentially provided on the outer circumference of the upper end portion of the first-stage tube shaft of the three-step step-type tube shaft, a first sealing ring groove is circumferentially provided on the inner edge of the upper end surface of the second-stage tube shaft of the three-step step-type tube shaft, and a limiting protrusion is integrally formed on one side of the outer circumference of the second-stage tube shaft of the three-step step-type tube shaft.

[0010] Based on the above, the inner diameter of the rotating interface is the same as the outer diameter of the first-stage tube shaft of the three-step stepped tube shaft, the first-stage tube shaft of the three-step stepped tube shaft is coaxially rotatably arranged in the rotating interface, the first rotating ring groove passes through the rotating interface and is located in the shell unit, the first-stage tube shaft of the three-step stepped tube shaft is sleeved with an E-ring rotatably clamped in the first rotating ring groove, the bottom of the shell unit is provided with a mounting groove inside the rotating interface, the E-ring is fixedly embedded in the mounting groove, there is a gap between the upper end surface of the second-stage tube shaft of the three-step stepped tube shaft and the outer bottom surface of the shell unit, the bottom of the shell unit is provided with a protective sleeve coaxially sleeved outside the three-step stepped tube shaft on the outside of the rotating interface, the third-stage tube shaft of the three-step stepped tube shaft The shaft is coaxially rotatably arranged in the protective sleeve, the inner circle of the lower end of the rotating interface is provided with a second sealing ring groove corresponding to the first sealing ring groove above and below, the first sealing ring groove is embedded with a first sealing ring tightly pressed between the first sealing ring groove and the second sealing ring groove, the bottom of the shell unit is provided with a second rotating ring groove located between the protective sleeve and the second sealing ring groove on the outside of the rotating interface, the outer circle of the second rotating ring groove is aligned with the inner circle of the protective sleeve, the inner circle of the second rotating ring groove is aligned with the outer circle of the second stage tube shaft of the three-step stepped tube shaft, the limiting protrusion is rotatably arranged in the second rotating ring groove, and a limiting column for blocking the limiting protrusion is also provided in the second rotating ring groove, and the limiting column and the limiting protrusion constitute the limiting structure.

[0011] Based on the above, the shell unit includes a front cover and an outer shell with an open front side, the front cover is buckled on the front end of the outer shell, the four corners of the front cover are fixed to the outer shell by screws, a third sealing ring groove is circumferentially provided on the front end edge of the outer shell, a second sealing ring is embedded in the third sealing ring groove and is tightly pressed between the front cover and the outer shell, a rotating interface is arranged at the bottom of the outer shell, and a window for installing a display screen is provided in the middle of the front cover.

[0012] Based on the above, the control unit is mainly composed of an MCU processor and a wireless communication circuit;

[0013] The MCU processor is connected to the pressure acquisition unit and the display screen through wires, and is used to process the pressure signal collected by the pressure acquisition unit and control the display screen to display the pressure value; the MCU processor is wirelessly connected to the remote monitoring platform through a wireless communication circuit, and is used to transmit the pressure value to the remote monitoring platform.

[0014] Based on the above, the maximum rotation angle of the limiting protrusion in the second rotating ring groove is 350°.

[0015] Based on the above, the housing unit is made of plastic.

[0016] The utility model has substantial features and progress compared to the prior art. Specifically, the utility model can realize that after the pressure transmitter is installed and fixed, the housing unit can be rotated 350 degrees so that the display screen faces the observer, which is convenient for inspection and maintenance. Through the wireless communication circuit design, the control unit and the remote monitoring platform are wirelessly connected, thereby realizing wireless transmission remote monitoring, replacing the traditional communication cable connection method, and making the housing unit compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of the utility model, omitting the control unit and the display screen.

[0018] Figure 2 It is the front view of the utility model.

[0019] Figure 3 It is a cross-sectional view of the utility model.

[0020] Figure 4 It is an axial view of the pressure collection unit of the utility model.

[0021] Figure 5 It is an exploded schematic diagram of the shell unit of the utility model Figure 1 .

[0022] Figure 6 It is an exploded schematic diagram of the housing unit of the utility model Figure 2 , omit the front cover.

[0023] Figure 7 It is a circuit structure diagram of the control unit of the utility model.

[0024] In the figure: 1. Shell unit; 2. Pressure collection unit; 3. Control unit; 4. Display screen; 5. Rotation interface; 6. Three-step stepped tube shaft; 7. First rotating ring groove; 8. First sealing ring groove; 9. Limiting protrusion; 10. E-ring; 11. Mounting groove; 12. Protective sleeve; 13. Second sealing ring groove; 14. First sealing ring; 15. Second rotating ring groove; 16. Limiting column; 17. Front cover; 18. Housing; 19. Third sealing ring groove; 20. Second sealing ring; 21. Window; U1. MCU processor; U2. Wireless communication circuit. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0026] like Figure 1-7 As shown, a direction-adjustable wireless pressure transmitter includes a pressure acquisition unit 2, a housing unit 1, a control unit 3 and a display screen 4. The pressure acquisition unit 2 is arranged at the bottom of the housing unit 1, and a tubular shaft rotating structure is arranged at the upper end of the pressure acquisition unit 2. A rotation interface 5 is arranged at the bottom of the housing unit 1. The tubular shaft rotating structure is coaxially installed in the rotation interface 5. A limiting structure for limiting the rotation angle of the housing unit 1 is arranged between the tubular shaft rotating structure and the rotation interface 5. The control unit 3 is installed in the housing unit 1, and the display screen 4 is installed on the front side of the housing unit 1. The control unit 3 is connected to the pressure acquisition unit 2 and the display screen 4 respectively through wires, and the control unit 3 is connected to the remote monitoring platform through wireless communication.

[0027] In this embodiment, the pressure acquisition unit 2 is a diffusion pressure sensor.

[0028] In this embodiment, the tubular shaft type rotating structure includes a three-stepped tubular shaft 6 integrally and coaxially arranged on the upper end of the pressure collection unit 2, and the outer diameter of the three-stepped tubular shaft 6 decreases from top to bottom;

[0029] Counting from top to bottom, a first rotating annular groove 7 is circumferentially provided on the outer circumference of the upper end portion of the first-stage tube shaft of the three-step stepped tube shaft 6, a first sealing annular groove 8 is circumferentially provided on the inner edge of the upper end surface of the second-stage tube shaft of the three-step stepped tube shaft 6, and a limiting protrusion 9 is integrally formed on one side of the outer circumference of the second-stage tube shaft of the three-step stepped tube shaft 6.

[0030] In this embodiment, the inner diameter of the rotating interface 5 is the same as the outer diameter of the first-stage tube shaft of the three-step stepped tube shaft 6. The first-stage tube shaft of the three-step stepped tube shaft 6 is coaxially rotatably arranged in the rotating interface 5. The first rotating ring groove 7 passes through the rotating interface 5 and is located in the shell unit 1. The first-stage tube shaft of the three-step stepped tube shaft 6 is sleeved with an E-type ring 10 that is rotatably clamped in the first rotating ring groove 7. The bottom of the shell unit 1 is provided with a mounting groove 11 inside the rotating interface 5. The E-type ring 10 is fixedly embedded in the mounting groove 11. There is a gap between the upper end surface of the second-stage tube shaft of the three-step stepped tube shaft 6 and the outer bottom surface of the shell unit 1. The bottom of the shell unit 1 is provided with a protective sleeve 12 coaxially sleeved outside the three-step stepped tube shaft 6 on the outside of the rotating interface 5. The third-stage tube shaft of the three-step stepped tube shaft 6 is coaxially rotatably arranged in the protective sleeve 12. The inner circle of the lower end of the opening 5 is provided with a second sealing ring groove 13 corresponding to the first sealing ring groove 8 above and below, and the first sealing ring groove 8 is embedded with a first sealing ring 14 tightly pressed between the first sealing ring groove 8 and the second sealing ring groove 13. The bottom of the housing unit 1 is provided with a second rotating ring groove 15 located between the protective sleeve 12 and the second sealing ring groove 13 on the outside of the rotating interface 5. The outer circle of the second rotating ring groove 15 is aligned with the inner circle of the protective sleeve 12, and the inner circle of the second rotating ring groove 15 is aligned with the outer circle of the second-stage tube shaft of the three-stage stepped tube shaft 6. The limiting protrusion 9 is rotatably arranged in the second rotating ring groove 15, and a limiting column 16 for blocking the limiting protrusion 9 is also arranged in the second rotating ring groove 15. The limiting column 16 and the limiting protrusion 9 constitute the limiting structure, and the maximum rotation angle of the limiting protrusion 9 in the second rotating ring groove 15 is 350°. In this embodiment, an E-ring 10 is used to limit the first-stage tube axis of the three-step stepped tube axis 6 in the axial direction, so that the first-stage tube axis of the three-step stepped tube axis 6 is rotatably connected to the rotating interface 5, and then the shell unit 1 can rotate relative to the pressure collection unit 2, and the display screen 4 can be adjusted to face the maintenance and commissioning personnel, so as to facilitate observation and maintenance. When rotated to a certain angle, the limiting protrusion 9 can be blocked by the limiting column 16, so that the shell unit 1 can rotate within a certain angle range. Here, the maximum rotation angle of the limiting protrusion 9 is set to 350°, and the shell unit 1 can rotate 350°; the first sealing ring 14 plays the role of sealing the rotating interface 5.

[0031] In this embodiment, the shell unit 1 includes a front cover 17 and a shell 18 with an open front side. The front cover 17 is snapped on the front end of the shell 18. The four corners of the front cover 17 are fixed to the shell 18 by screws. A third sealing ring groove 19 is circumferentially provided at the front edge of the shell 18. A second sealing ring 20 is embedded in the third sealing ring groove 19 and is tightly pressed between the front cover 17 and the shell 18. The rotating interface 5 is arranged at the bottom of the shell 18. A window 21 for mounting the display screen 4 is provided in the middle of the front cover 17.

[0032] like Figure 7As shown, the control unit 3 in this embodiment is mainly composed of an MCU processor U1 and a wireless communication circuit U2;

[0033] The MCU processor U1 is connected to the pressure collection unit 2 and the display screen 4 through wires, and is used to process the pressure signal collected by the pressure collection unit 2 and control the display screen 4 to display the pressure value; the MCU processor U1 is wirelessly connected to the remote monitoring platform through the wireless communication circuit U2, and is used to transmit the pressure value to the remote monitoring platform, so as to realize wireless transmission remote monitoring. The design of the wireless communication circuit U2 replaces the traditional cable communication connection method, and can make the volume of the housing unit 1 small.

[0034] Moreover, the wireless communication circuit U2 adopts a modular design and is installed through a plug-in installation method, so that the wireless communication circuit U2 can be easily replaced and installed. The wireless communication circuit U2 is compatible with wireless transmissions such as 4G, NB and Lora.

[0035] In this embodiment, the housing unit 1 is made of plastic.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A direction-adjustable wireless pressure transmitter, characterized in that: It includes a pressure collection unit, a shell unit, a control unit and a display screen. The pressure collection unit is arranged at the bottom of the shell unit. A tubular shaft rotating structure is arranged at the upper end of the pressure collection unit. A rotating interface is arranged at the bottom of the shell unit. The tubular shaft rotating structure is coaxially installed in the rotating interface. A limiting structure for limiting the rotating angle of the shell unit is arranged between the tubular shaft rotating structure and the rotating interface. The control unit is installed in the shell unit. The display screen is installed on the front side of the shell unit. The control unit is connected to the pressure collection unit and the display screen through wires respectively, and the control unit is connected to the remote monitoring platform through wireless communication.

2. The direction-adjustable wireless pressure transmitter according to claim 1, characterized in that: The pressure acquisition unit is a diffusion pressure sensor.

3. The direction-adjustable wireless pressure transmitter according to claim 2, characterized in that: The tubular shaft rotating structure includes a three-step tubular shaft integrally and coaxially arranged at the upper end of the pressure collection unit, and the outer diameter of the three-step tubular shaft decreases from top to bottom; Counting from top to bottom, a first rotating ring groove is circumferentially provided on the outer circumference of the upper end portion of the first-stage tube shaft of the three-step step-type tube shaft, a first sealing ring groove is circumferentially provided on the inner edge of the upper end surface of the second-stage tube shaft of the three-step step-type tube shaft, and a limiting protrusion is integrally formed on one side of the outer circumference of the second-stage tube shaft of the three-step step-type tube shaft.

4. The direction-adjustable wireless pressure transmitter according to claim 3 is characterized in that: The inner diameter of the rotating interface is the same as the outer diameter of the first-stage tube shaft of the three-step stepped tube shaft. The first-stage tube shaft of the three-step stepped tube shaft is coaxially rotatably arranged in the rotating interface. The first rotating ring groove passes through the rotating interface and is located in the shell unit. The first-stage tube shaft of the three-step stepped tube shaft is sleeved with an E-ring rotatably clamped in the first rotating ring groove. The bottom of the shell unit is provided with a mounting groove inside the rotating interface. The E-ring is fixedly embedded in the mounting groove. There is a gap between the upper end surface of the second-stage tube shaft of the three-step stepped tube shaft and the outer bottom surface of the shell unit. The bottom of the shell unit is provided with a protective sleeve coaxially sleeved outside the three-step stepped tube shaft on the outside of the rotating interface. The third-stage tube shaft of the three-step stepped tube shaft is coaxially sleeved outside the three-step stepped tube shaft. The shaft is rotatably arranged in the protective sleeve, and the inner circle of the lower end of the rotating interface is provided with a second sealing ring groove corresponding to the first sealing ring groove above and below, and the first sealing ring groove is embedded with a first sealing ring tightly pressed between the first sealing ring groove and the second sealing ring groove. The bottom of the shell unit is provided with a second rotating ring groove located between the protective sleeve and the second sealing ring groove on the outside of the rotating interface, the outer circle of the second rotating ring groove is aligned with the inner circle of the protective sleeve, and the inner circle of the second rotating ring groove is aligned with the outer circle of the second stage tube shaft of the three-step stepped tube shaft, and the limiting protrusion is rotatably arranged in the second rotating ring groove, and a limiting column for blocking the limiting protrusion is also provided in the second rotating ring groove, and the limiting column and the limiting protrusion constitute the limiting structure.

5. The direction-adjustable wireless pressure transmitter according to claim 1, characterized in that: The shell unit includes a front cover and an outer shell with an open front side. The front cover is buckled on the front end of the outer shell. The four corners of the front cover are fixed to the outer shell by screws. A third sealing ring groove is circumferentially provided on the front edge of the outer shell. A second sealing ring is embedded in the third sealing ring groove and is tightly pressed between the front cover and the outer shell. The rotating interface is arranged at the bottom of the outer shell. A window for installing a display screen is arranged in the middle of the front cover.

6. The direction-adjustable wireless pressure transmitter according to claim 1, characterized in that: The control unit is mainly composed of MCU processor and wireless communication circuit; The MCU processor is connected to the pressure acquisition unit and the display screen through wires, and is used to process the pressure signal collected by the pressure acquisition unit and control the display screen to display the pressure value; the MCU processor is wirelessly connected to the remote monitoring platform through a wireless communication circuit, and is used to transmit the pressure value to the remote monitoring platform.

7. The direction-adjustable wireless pressure transmitter according to claim 4, characterized in that: The maximum rotation angle of the limiting protrusion in the second rotating ring groove is 350°.

8. The direction-adjustable wireless pressure transmitter according to claim 1, characterized in that: The housing unit is made of plastic.

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