Multi-stage leakage-preventing corrosion-resistant digital display pressure switch

Abstract

The utility model provides a multi-stage leakage-preventing corrosion-resistant digital display pressure switch, and relates to the technical field of digital display pressure switches. The multi-stage leakage-preventing corrosion-resistant digital display pressure switch comprises a front shell, a key mirror surface is arranged on the upper side of the middle of the front shell, a display screen is arranged in the middle of the key mirror surface, conductive rubber is arranged at the lower end of the display screen, the outer surface of the display screen is sleeved with a middle frame shell, and a mainboard is arranged in the middle of the middle frame shell. A first metal pressing ring is arranged in the middle of the middle frame shell. According to the multi-stage leakage-preventing corrosion-resistant digital display pressure switch, the first-stage sealing ring is cushioned at the bottom of the inner wall of the pressure sensor core and the sensor connector, the effect of preventing medium leakage through multi-stage protection is achieved, the effect of improving the sealing performance of the digital display pressure switch is achieved, rotation operation is conducted by manually rotating the outer bolt, and the sealing performance of the digital display pressure switch is improved. The effect of quick and stable connection is achieved, and the effect of improving the use convenience of the digital display pressure switch is achieved.

Description

Technical Field

[0001] The utility model relates to a multi-stage corrosion-resistant digital pressure switch with leakage prevention, belonging to the technical field of corrosion-resistant digital pressure switches. Background Art

[0002] The corrosion-resistant digital pressure switch is an electronic product that can detect pressure in real time and output control according to the settings of the corrosion-resistant digital pressure sensor. It integrates display, control, and sensing, and is mainly used as an important accessory component of various mechanical equipment. The digital pressure switch has a built-in sensor, which outputs to the control motherboard through the sensor. The motherboard receives the information transmitted by the sensor and then performs calculations according to the setting menu or default settings of the corrosion-resistant digital pressure sensor, and outputs the calculation results as control signals.

[0003] Although the existing digital pressure switch can perform daily real-time pressure detection operations, in actual use, since the digital pressure sensor only has a single sealing ring at the connection, after long-term use, the sealing gasket at the connection is easily corroded and damaged, which in turn causes leakage at the connection, making the digital pressure switch insufficiently sealed. In addition, when installing the pipeline to be tested, it is necessary to use multiple bolts to tighten the pipeline to be tested with fasteners after the installation is completed. Multiple bolts need to be tightened during installation and disassembly, which brings inconvenience to the staff and makes the digital pressure switch insufficiently convenient to use. Utility Model Content

[0004] (1) Technical problems solved

[0005] The utility model provides a multi-stage corrosion-resistant digital pressure switch with leakage prevention, so as to solve the problems of insufficient sealing performance and insufficient convenience of use of digital pressure switches in the prior art.

[0006] (2) Technical solution

[0007] The utility model is realized through the following technical solutions: a multi-stage leakage-proof corrosion-resistant digital pressure switch, comprising a front shell, a button mirror is provided on the upper middle side of the front shell, a display screen is provided in the middle of the button mirror, a conductive rubber is provided at the lower end of the display screen, a middle frame shell is provided on the outer surface of the display screen, a main board is provided in the middle of the middle frame shell, a first metal pressure ring is provided in the middle of the middle frame shell, a second metal pressure ring is provided in the middle of the first metal pressure ring, a sensor pressure ring is provided inside the first metal pressure ring, a pressure sensor core is provided in the middle of the sensor pressure ring, a second-stage sealing fluororubber ring is provided in the middle of the pressure sensor core, a first-stage sealing ring is provided at the lower end of the pressure sensor core, a sensor connector is provided on the outer surface of the pressure sensor core, a hardware waterproof sealing ring is provided at the upper end of the sensor connector, a bottom shell is provided on the inner wall of the front shell, a shell waterproof sealing ring is provided in the middle of the bottom shell, and a mounting bracket is detachably mounted on the lower end of the bottom shell by bolts.

[0008] Preferably, an external bolt is threadedly connected to the middle of the sensor joint, four stabilizing rods are fixed to the lower side of the sensor joint, and the outer surfaces of every two stabilizing rods are rotatably connected to one of the pressing frames, and the two pressing frames are fixed with limiting frames on the separated sides.

[0009] Preferably, the two pressing frames are arranged opposite to each other, and each pressing frame is arranged in a semicircular shape.

[0010] Preferably, the outer bolt is threadedly connected to the middle part of the sensor joint, the inner wall of the outer bolt contacts the outer surfaces of the two pressing frames, the proximal ends of the two limit frames are fixed on the separated sides of the two pressing frames, and the outer surfaces of the two limit frames contact the outer surface of the lower end of the outer bolt.

[0011] Preferably, the pressure sensor core is electrically connected to the mainboard, the pressure sensor core is electrically connected to the sensor connector, the mainboard is electrically connected to the display screen, and the mainboard is electrically connected to the external connection terminal.

[0012] Preferably, the front shell is sleeved on the outer surface of the bottom shell, the bottom shell is sleeved on the outer surface of the middle frame shell, the shell waterproof sealing ring is sleeved between the bottom shell and the front shell, the middle frame shell is sleeved on the outer surfaces of the main board, display screen and button mirror from bottom to top, and the sensor connector is implemented in the middle of the bottom end of the bottom shell.

[0013] Preferably, the first-stage sealing ring is arranged between the bottom of the pressure sensor core and the bottom inner wall of the sensor joint, and the second-stage sealing fluororubber ring is arranged between the middle of the pressure sensor core and the side inner wall of the sensor joint.

[0014] The utility model provides a corrosion-resistant digital pressure switch with multi-level leakage prevention, which has the following beneficial effects:

[0015] (1) The corrosion-resistant digital pressure switch with multi-level leakage prevention has a first-level sealing ring placed at the bottom of the inner wall of the pressure sensor core and the sensor connector, so that the first sealing ring, the second sealing fluororubber ring, and the hardware waterproof sealing ring cooperate with each other to achieve multi-level protection against medium leakage, thereby avoiding the situation where the medium to be measured corrodes and damages the sealing ring at the connection, causing leakage, thereby achieving the effect of improving the sealing performance of the digital pressure switch.

[0016] (2) The multi-stage corrosion-resistant digital pressure switch with leakage prevention is rotated by manually turning the outer bolt, so that the outer bolt, stabilizer bar, pressing frame and limit frame work together to achieve a quick and stable connection effect. During installation and disassembly, there is no need for workers to screw multiple bolts, which brings convenience to the installation and disassembly operations of the workers, thereby achieving the effect of improving the convenience of using the digital pressure switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 This is a schematic structural diagram of a pressing frame of the present utility model.

[0020]

Main component symbol description

[0021] 1. Front shell; 2. Button mirror; 3. Conductive rubber; 4. First metal pressure ring; 5. Second metal pressure ring; 6. Shell waterproof seal; 7. Sensor pressure ring; 8. Second-stage sealing fluororubber ring; 9. Hardware waterproof seal; 10. Display; 11. Middle frame shell; 12. Motherboard; 13. External terminal; 14. Bottom shell; 15. Mounting bracket; 16. Pressure sensor core; 17. First-stage sealing ring; 18. Sensor connector; 19. External bolt; 20. Stabilizer bar; 21. Pressing bracket; 22. Limiting bracket. DETAILED DESCRIPTION

[0022] The embodiment of the utility model provides a corrosion-resistant digital pressure switch with multi-stage leakage prevention.

[0023] See also Figure 1 、 Figure 2 and Figure 3, including a front shell 1, the front shell 1 is an integral shell, which protects the digital display switch as a whole. A button mirror 2 is provided on the upper middle side of the front shell 1. The button mirror 2 cooperates with the display screen 10 to control the display. The display screen 10 is provided in the middle of the button mirror 2. The lower end of the display screen 10 is provided with a conductive rubber 3. The conductive rubber 3 has a conductive function. The outer surface of the display screen 10 is provided with a middle frame shell 11. The middle frame shell 11 protects vulnerable parts such as the motherboard 12 and the display screen 10 again. The motherboard 12 is provided in the middle of the middle frame shell 11. The motherboard 12 has a single-chip microcomputer program. According to the set parameters, it can provide signal output. The corresponding function and value are displayed on the display screen 10 in real time through the pressure sensor The core 16 detects the current pressure value. A first metal pressure ring 4 is provided in the middle of the middle frame shell 11. A second metal pressure ring 5 is sleeved in the middle of the first metal pressure ring 4. A sensor pressure ring 7 is provided inside the first metal pressure ring 4. A pressure sensor core 16 is provided in the middle of the sensor pressure ring 7. A second-stage sealing fluororubber ring 8 is sleeved in the middle of the pressure sensor core 16. A first-stage sealing ring 17 is provided at the lower end of the pressure sensor core 16. A sensor connector 18 is sleeved on the outer surface of the pressure sensor core 16. A hardware waterproof sealing ring 9 is provided at the upper end of the sensor connector 18. A bottom shell 14 is provided on the inner wall of the front shell 1. A shell waterproof sealing ring 6 is sleeved in the middle of the bottom shell 14. The lower end of the bottom shell 14 is detachably mounted with a mounting bracket 15 by bolts.

[0024] See also Figure 1 、 Figure 2 and Figure 3 It is worth noting that the pressure sensor core 16 is electrically connected to the mainboard 12, the pressure sensor core 16 is electrically connected to the sensor connector 18, the mainboard 12 is electrically connected to the display screen 10, and the mainboard 12 is electrically connected to the external terminal 13. The front shell 1 is sleeved on the outer surface of the bottom shell 14, the bottom shell 14 is sleeved on the outer surface of the middle frame shell 11, the shell waterproof sealing ring 6 is sleeved between the bottom shell 14 and the front shell 1, and the middle frame shell 11 is sleeved on the outer surfaces of the mainboard 12, the display screen 10 and the button mirror 2 from bottom to top. The sensor connector 18 is implemented in the middle of the bottom end of the bottom shell 14. The first-stage sealing ring 17 is arranged between the bottom of the pressure sensor core 16 and the inner wall of the bottom of the sensor connector 18. The second-stage sealing fluororubber ring 8 is arranged between the middle of the pressure sensor core 16 and the inner wall of the side of the sensor connector 18.

[0025] See also Figure 1 、 Figure 2 and Figure 3It is worth mentioning that the middle part of the sensor joint 18 is threadedly connected with an external bolt 19, and four stabilizing rods 20 are fixed to the lower side of the sensor joint 18. The stabilizing rod 20 is consistent in length with the pressing frame 21. The outer surface of each two stabilizing rods 20 is rotatably connected with one of the pressing frames 21. The two pressing frames 21 are fixed with limiting frames 22 on the separated sides. The two pressing frames 21 are arranged opposite to each other, and each pressing frame 21 is arranged in a semicircular shape. The external bolt 19 is threadedly connected to the middle part of the sensor joint 18, and the inner wall of the external bolt 19 is in contact with the outer surfaces of the two pressing frames 21. The proximal ends of the two limiting frames 22 are fixed on the separated sides of the two pressing frames 21, and the outer surfaces of the two limiting frames 22 are in contact with the outer surface of the lower end of the external bolt 19.

[0026] When the utility model is in use: first, the pipeline of the medium to be measured is sleeved on the outer surface of the sensor joint 18. When the sensor joint 18 contacts the medium, the pressure of the current medium will be detected through the pressure sensor core 16. The signal output by the pressure sensor core 16 is transmitted to the main board 12 of the digital pressure switch. The main board 12 has a single-chip computer program. According to the set parameters, it can provide signal output and corresponding functions. The numerical value is displayed on the display screen 10. The current pressure value is detected in real time through the pressure sensor core 16. When the digital pressure switch reaches the set pressure value, the switch signal is output through the external terminal 13 of the main board 12. The pressure value of the current medium is collected in real time. The first-level sealing ring 17 is padded at the bottom position of the inner wall of the pressure sensor core 16 and the sensor joint 18 to perform the first-level sealing operation. Then, the second-level sealing fluororubber ring 8 is sleeved at the middle position of the pressure sensor core 16 and the middle position of the inner wall of the sensor joint 18 to perform the second-level sealing operation. The upper end of the sensor joint 18 is sealed by five The gold waterproof sealing ring 9 fits tightly with the bottom shell 14, and can perform the third-level sealing operation, completing the multi-level protection to prevent medium leakage in sequence, avoiding the situation where the medium to be measured corrodes and damages the sealing ring at the connection, causing leakage, thereby achieving the effect of improving the sealing of the digital pressure switch, and then manually rotating the outer bolt 19 to rotate the outer bolt 19 so that the outer bolt 19 rotates while moving under the stability of the middle part of the threaded sensor joint 18. The downward-moving outer bolt 19 presses the two pressing frames 21 connected in rotation at the lower end, so that the two pressing frames 21 are merged under the stability of the stabilizing rod 20. The merged two pressing frames 21 press and stabilize the pipeline sleeved on the sensor joint 18 until the outer bolt 19 moves to contact the two limit frames 22 and stops, completing the effect of quick connection and stability. During installation and disassembly, there is no need for staff to screw multiple bolts, which brings convenience to the installation and disassembly operations of the staff, thereby achieving the effect of improving the convenience of use of the digital pressure switch.

[0027] Working principle: The first-stage sealing ring 17 is placed at the bottom of the inner wall of the pressure sensor core 16 and the sensor connector 18, and cooperates with the second-stage sealing fluorine rubber ring 8 and the hardware waterproof sealing ring 9 to achieve multi-level protection to prevent medium leakage, avoid the medium to be measured from corroding and damaging the sealing ring at the connection to cause leakage, thereby achieving the effect of improving the sealing performance of the digital pressure switch. Subsequently, the outer bolt 19 is rotated by manpower to squeeze the pressing frame 21, achieving a fast and stable connection effect. During installation and disassembly, there is no need for the staff to screw multiple bolts, which brings convenience to the staff's installation and disassembly operations, thereby achieving the effect of improving the ease of use of the digital pressure switch.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage anti-leakage corrosion-resistant digital pressure switch, comprising a front shell (1), characterized in that: A key mirror (2) is arranged on the upper middle side of the front shell (1), a display screen (10) is arranged in the middle of the key mirror (2), a conductive rubber (3) is arranged at the lower end of the display screen (10), a middle frame shell (11) is sleeved on the outer surface of the display screen (10), a main board (12) is arranged in the middle of the middle frame shell (11), a first metal pressure ring (4) is arranged in the middle of the middle frame shell (11), a second metal pressure ring (5) is sleeved in the middle of the first metal pressure ring (4), a sensor pressure ring (7) is arranged inside the first metal pressure ring (4), and a sensor pressure ring (7) is arranged in the middle of the sensor pressure ring (7). A pressure sensor core (16) is provided, a second-stage sealing fluororubber ring (8) is sleeved in the middle of the pressure sensor core (16), a first-stage sealing ring (17) is provided at the lower end of the pressure sensor core (16), a sensor connector (18) is sleeved on the outer surface of the pressure sensor core (16), a hardware waterproof sealing ring (9) is provided at the upper end of the sensor connector (18), a bottom shell (14) is provided on the inner wall of the front shell (1), a shell waterproof sealing ring (6) is sleeved in the middle of the bottom shell (14), and a mounting frame (15) is detachably mounted on the lower end of the bottom shell (14) by bolts.

2. A multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 1, characterized in that: An external bolt (19) is threadedly connected to the middle of the sensor joint (18), and four stabilizing rods (20) are fixed to the lower side of the sensor joint (18). The outer surfaces of every two stabilizing rods (20) are rotatably connected to one of the pressing frames (21), and the separated sides of the two pressing frames (21) are fixed with a limiting frame (22).

3. A multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 2, characterized in that: The two pressing frames (21) are arranged opposite to each other, and each pressing frame (21) is arranged in a semicircular shape.

4. A multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 2, characterized in that: The outer bolt (19) is threadedly connected to the middle part of the sensor joint (18), the inner wall of the outer bolt (19) contacts the outer surfaces of the two pressing frames (21), the proximal ends of the two limiting frames (22) are fixed to the separated sides of the two pressing frames (21), and the outer surfaces of the two limiting frames (22) contact the outer surface of the lower end of the outer bolt (19).

5. The multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 1, characterized in that: The pressure sensor core (16) is electrically connected to the main board (12), the pressure sensor core (16) is electrically connected to the sensor connector (18), the main board (12) is electrically connected to the display screen (10), and the main board (12) is electrically connected to the external connection terminal (13).

6. The multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 1, characterized in that: The front shell (1) is sleeved on the outer surface of the bottom shell (14), the bottom shell (14) is sleeved on the outer surface of the middle frame shell (11), the shell waterproof sealing ring (6) is sleeved between the bottom shell (14) and the front shell (1), the middle frame shell (11) is sleeved on the outer surfaces of the main board (12), the display screen (10) and the key mirror (2) in sequence from bottom to top, and the sensor connector (18) runs through the middle of the bottom end of the bottom shell (14).

7. The multi-stage anti-leakage corrosion-resistant digital pressure switch according to claim 1, characterized in that: The first-stage sealing ring (17) is arranged between the bottom of the pressure sensor core (16) and the bottom inner wall of the sensor joint (18), and the second-stage sealing fluororubber ring (8) is arranged between the middle of the pressure sensor core (16) and the side inner wall of the sensor joint (18).

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