Cylinder type capacitance liquid level meter

Abstract

The utility model discloses a barrel type capacitance liquid level meter which comprises a barrel shell, a dirt cleaning mechanism and a quick assembly mechanism. A water inlet pipe and evenly distributed drainage pipes are arranged on the inner wall of the barrel shell in a penetrating mode, a blow-off pipe is arranged on the bottom wall of the barrel shell in a penetrating mode, a feeler lever is arranged on the top wall of the barrel shell, and a transmitter is arranged at the upper end of the feeler lever; the sewage disposal mechanism is arranged in the barrel shell; the quick mounting mechanism is arranged at the right end of the outer side of the drainage tube; the liquid level meter further comprises a single-chip microcomputer which is arranged outside the barrel shell, the input end of the single-chip microcomputer is electrically connected with an external power source, the single-chip microcomputer is electrically connected with the transmitter in a bidirectional mode, the barrel type capacitance liquid level meter is fixed to an external connecting flange plate through the elastic element and threaded connection, external tools are not needed, mounting and dismounting operation is convenient and fast, and the liquid level meter is simple in structure and convenient to use. And meanwhile, the device can automatically clean impurities adhered to the interior of the cylinder body, and the capacitance liquid level measurement accuracy of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level gauges, in particular to a cylindrical capacitance liquid level gauge. Background Art

[0002] The cylindrical capacitance level gauge is a measuring instrument that uses the change of capacitance to measure the level of the medium in the container. In the container, the container wall made of electrodes and conductive materials constitutes a capacitor. For a given electrode, when the dielectric constant of the measured medium remains unchanged, a fixed frequency measurement voltage is applied to the electrode. The current flowing through the capacitor depends on the height of the medium between the capacitor electrodes and is proportional to it. Therefore, the capacitance level gauge is based on the change of capacitance to measure the level. When using some cylindrical capacitance level gauges, first connect the upper and lower drainage pipes to the external level measurement through bolts. The flange of the unit is connected, and then the control valve on the drainage pipe is opened, so that the liquid in the external liquid level measurement unit enters the device through the drainage pipe on the lower side. Then the transmitter obtains the height of the capacitance electrode medium through the probe pair inside the device, and transmits the liquid level measurement result to the external data display part in the form of an electrical signal. However, the device is connected and fixed to the external flange with bolts. The installation and disassembly of the bolts require the help of external tools and are performed manually one by one. The operation is relatively cumbersome. At the same time, after the device is used for a long time, a large amount of impurities will adhere to the inner wall of the cylinder, which will interfere with the subsequent capacitance liquid level measurement. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a cylindrical capacitance liquid level gauge. The device is fixed to an external connecting flange by elastic elements and threaded connections, and no external tools are required. The installation and disassembly operations are convenient and quick. At the same time, the device can automatically clean impurities adhered to the inside of the cylinder, thereby improving the capacitance liquid level measurement accuracy of the device, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylindrical capacitance level gauge, comprising a cylindrical shell, a cleaning mechanism and a quick-installation mechanism;

[0005] Cylinder shell: Its inner wall is penetrated by a water inlet pipe and evenly distributed drainage pipes, the bottom wall of the cylinder shell is penetrated by a sewage pipe, the top wall of the cylinder shell is provided with a probe rod, and the upper end of the probe rod is provided with a transmitter;

[0006] Cleaning mechanism: it is arranged inside the cylinder shell;

[0007] Quick-install mechanism: It is arranged at the right end of the outer side of the drainage tube;

[0008] Among them: it also includes a single-chip microcomputer, which is arranged on the outside of the cylinder shell, the input end of the single-chip microcomputer is electrically connected to the external power supply, and the single-chip microcomputer is bidirectionally electrically connected to the transmitter. The device is fixed to the external connecting flange through elastic elements and threaded connections, without the aid of external tools, and the installation and disassembly operations are convenient and fast. At the same time, the device can automatically clean impurities adhered to the inside of the cylinder, thereby improving the capacitance liquid level measurement accuracy of the device.

[0009] Furthermore, control valves are connected in series in the middle of the water inlet pipe, sewage pipe and drainage pipe to regulate the opening and closing of the pipelines.

[0010] Furthermore, the cleaning mechanism includes a reciprocating screw, a cleaning ring and a motor. The reciprocating screw is rotatably connected to the inside of the cylinder shell through a bearing. The outer side of the reciprocating screw is threadedly connected to the cleaning ring. A motor is provided on the upper side of the cylinder shell. The input end of the motor is electrically connected to the output end of the single-chip microcomputer. The output shaft of the motor is fixedly connected to the upper end of the reciprocating screw to clean impurities adhered to the inner wall of the cylindrical capacitance level meter.

[0011] Furthermore, the cleaning mechanism also includes a guide rod, which is arranged between the upper and lower walls of the cylinder shell. The cleaning ring is slidably connected to the guide rod to prevent the cleaning ring from shaking during the vertical movement.

[0012] Furthermore, the quick-loading mechanism includes an externally threaded barrel, an internally threaded handle, a rotating ring, a connecting rod, a round seat, a telescopic column and a limit seat. The externally threaded barrel is arranged at the outer right end of the drainage tube, the outer side of the externally threaded barrel is threadedly connected to the internally threaded handle, the outer right end of the internally threaded handle is rotatably connected to the rotating ring through a bearing, the right end of the rotating ring is provided with evenly distributed connecting rods, the right end of the connecting rod is provided with a round seat, and the side of the round seat close to the center of the adjacent drainage tube is provided with a limit seat through a telescopic column, and the drainage tube of the cylindrical capacitance level gauge is quickly connected to the external connecting flange through a threaded connection and spring force.

[0013] Furthermore, the quick-install mechanism also includes a spring, and the springs are all arranged between the round seat and the adjacent limit seat. The springs are all movably connected to the outer ends of the adjacent telescopic columns, and the limit seats are elastically reset after contraction through the spring elastic force.

[0014] Furthermore, a rubber sealing ring is provided on the right side of the drainage tube to reduce the contact surface gap between the drainage tube of the cylindrical capacitance level gauge and the external connecting flange.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. When installing the cylinder body capacitance level gauge, first align the right ends of the upper and lower drainage tubes horizontally with the connecting flanges corresponding to the external liquid level detection parts, then reversely rotate the internal thread handle to make it connect with the external thread barrel threadedly, thereby indirectly driving the limit seat to move rightward. As the right side of the drainage tube approaches the corresponding flange, move the limit seat to move it toward the end away from the center of the drainage tube. The telescopic end of the telescopic column and the spring contract, so that the right side of the drainage tube is unobstructed. As the right side of the drainage tube is axially aligned with the external connecting flange, loosen the The force applied to the limit seat is opened, and the limit seat is reset to the right side of the outer edge of the connecting flange through the compression elastic force of the spring. Then, the internal threaded handle is rotated forward to indirectly drive the limit seat to move left through the threaded connection. The extrusion force during the limit seat moving left squeezes the external connecting flange and the right side of the drainage tube, thereby realizing the rapid installation of the cylinder capacitance level gauge and facilitating the later disassembly operation. The cylinder type capacitance level gauge is fixed to the external connecting flange through elastic elements and threaded connections. No external tools are required, and the installation and disassembly operations are convenient and quick.

[0017] 2. When cleaning the cylinder body, close the control valve on the drainage pipe, open the control valve on the water inlet pipe, and transport clean water to the inside of the device through the water inlet pipe. Then the single-chip microcomputer starts the motor so that its output shaft drives the reciprocating screw to rotate. The reciprocating screw is connected by a thread so that the cleaning ring moves back and forth vertically along the inner wall of the cylinder shell, thereby cleaning the impurities adhered to the inner wall of the cylinder shell. The cylinder-type capacitance level gauge can automatically clean the impurities adhered to the inside of the cylinder, thereby improving the capacitance level measurement accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 Schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is an enlarged structural diagram of point A of the utility model.

[0021] In the figure: 1 cylinder shell, 2 single chip microcomputer, 3 water inlet pipe, 4 sewage pipe, 5 drainage pipe, 6 control valve, 7 sewage cleaning mechanism, 71 reciprocating screw, 72 sewage cleaning ring, 73 guide rod, 74 motor, 8 quick-loading mechanism, 81 external thread cylinder, 82 internal thread grip, 83 rotating ring, 84 connecting rod, 85 round seat, 86 telescopic column, 87 spring, 88 limit seat, 9 rubber sealing ring, 10 probe rod, 11 transmitter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 , This embodiment provides a technical solution: a cylindrical capacitance level gauge, comprising a cylindrical shell 1, a cleaning mechanism 7 and a quick-installation mechanism 8;

[0024] Cylinder shell 1: its inner wall is penetrated by a water inlet pipe 3 and evenly distributed drainage pipes 5, the bottom wall of the cylinder shell 1 is penetrated by a sewage pipe 4, the top wall of the cylinder shell 1 is provided with a probe rod 10, the upper end of the probe rod 10 is provided with a transmitter 11, the middle parts of the water inlet pipe 3, the sewage pipe 4 and the drainage pipe 5 are all connected in series with a control valve 6, when the device measures the liquid level, the control valve 6 on the drainage pipe 5 is opened, and the external liquid enters through the drainage pipe 5 on the lower side, the cylinder shell 1 and the probe rod 10 are two electrodes respectively, the liquid in the device is a dielectric, a constant voltage is applied to the cylinder shell 1 and the probe rod 10 through an external element, the single chip computer 2 starts the transmitter 11, the transmitter 11 detects the height signal of the liquid medium between the capacitance electrodes inside the device according to the current change through the probe rod 10, and transmits it to the single chip computer 2 in the form of an electrical signal, thereby realizing the liquid level measurement;

[0025] The cleaning mechanism 7 is arranged inside the cylinder shell 1. The cleaning mechanism 7 includes a reciprocating screw 71, a cleaning ring 72 and a motor 74. The reciprocating screw 71 is rotatably connected to the inside of the cylinder shell 1 through a bearing. The outer side of the reciprocating screw 71 is threadedly connected with a cleaning ring 72. A motor 74 is arranged on the upper side of the cylinder shell 1. The input end of the motor 74 is electrically connected to the output end of the single-chip microcomputer 2. The output shaft of the motor 74 is fixedly connected to the upper end of the reciprocating screw 71. The cleaning mechanism 7 also includes a guide rod 73. The guide rod 73 is arranged between the upper and lower walls of the cylinder shell 1. The cleaning ring 72 is slidably connected to the guide rod 73. When cleaning the inside of the cylinder-type capacitance level gauge, the control valve 6 on the drainage pipe 5 is closed, and the control valve 6 on the water inlet pipe 3 is opened. Valve 6, transports clean water to the inside of the device through the water inlet pipe 3, then the single chip computer 2 starts the motor 74 so that its output shaft drives the reciprocating screw 71 to rotate, and the reciprocating screw 71 is connected by a thread so that the cleaning ring 72 moves vertically up and down along the inner wall of the cylinder shell 1, thereby cleaning the impurities adhering to the inner wall of the cylinder shell 1, and the cleaning ring 72 slides relative to the guide rod 73 to avoid horizontal shaking and swaying during its vertical movement, thereby improving its operating stability, and then the control valve 6 on the sewage pipe 4 is opened to discharge the sewage and impurities inside the device, which is easy to use. The cylindrical capacitance level gauge can automatically clean the impurities adhering to the inside of the cylinder, thereby improving the accuracy of the capacitance level measurement of the device;

[0026] Quick-loading mechanism 8: They are all arranged at the right end of the outer side of the drainage tube 5. The quick-loading mechanism 8 includes an external threaded barrel 81, an internal threaded handle 82, a rotating ring 83, a connecting rod 84, a round seat 85, a telescopic column 86 and a limit seat 88. The external threaded barrel 81 is arranged at the right end of the outer side of the drainage tube 5. The outer side of the external threaded barrel 81 is threadedly connected with the internal threaded handle 82. The outer right end of the internal threaded handle 82 is rotatably connected with the rotating ring 83 through a bearing. The right end of the rotating ring 83 is provided with evenly distributed connecting rods 84. The right end of the connecting rod 84 is provided with a round seat 85. The round seat A stopper 88 is provided on one side of the center of the adjacent drainage tube 5 through a telescopic column 86. The quick-install mechanism 8 also includes a spring 87. The spring 87 is arranged between the round seat 85 and the adjacent stopper 88. The spring 87 is movably connected to the outer end of the adjacent telescopic column 86. A rubber sealing ring 9 is provided on the right side of the drainage tube 5. When installing the cylinder body capacitance liquid level gauge, first align the right ends of the drainage tube 5 at the upper and lower ends with the connecting flanges corresponding to the external liquid level detection part, and then reversely rotate the internal threaded handle 82 to pass through the connection flange 86. The external threaded tube 81 is threadedly connected, thereby indirectly driving the limit seat 88 to move rightward. As the right side of the drainage tube 5 approaches the corresponding flange, the limit seat 88 is moved to move toward the end away from the center of the drainage tube 5. The telescopic end of the telescopic column 86 and the spring 87 are contracted, so that the right side of the drainage tube 5 is unobstructed. As the right side of the drainage tube 5 is axially aligned with the external connecting flange, the force applied to the limit seat 88 is released, and the compressive elastic force of the spring 87 causes the limit seat 88 to return to the right side of the outer edge of the connecting flange, and then rotates forward. The internal threaded handle 82 is moved to indirectly drive the limit seat 88 to move leftward through the threaded connection. The extrusion force during the leftward movement of the limit seat 88 squeezes the external connection flange and the right side of the drainage tube 5 tightly, thereby realizing the rapid installation of the cylinder capacitance level gauge, and the later disassembly operation is convenient. The rubber sealing ring 9 is used to reduce the contact surface gap between the drainage tube 5 and the external connection flange. The cylinder-type capacitance level gauge is fixed to the external connection flange through the elastic element and the threaded connection, and no external tools are required. The installation and disassembly operations are convenient and quick;

[0027] Among them: it also includes a single chip microcomputer 2, which is arranged outside the cylindrical shell 1, the input end of the single chip microcomputer 2 is electrically connected to the external power supply, and the single chip microcomputer 2 is bidirectionally electrically connected to the transmitter 11, which is convenient for controlling electrical components.

[0028] The working principle of a cylindrical capacitance level gauge provided by the utility model is as follows: when installing the cylindrical capacitance level gauge, first align the right ends of the drainage tube 5 at the upper and lower ends with the connecting flanges corresponding to the external liquid level detection part, then reversely rotate the internal threaded handle 82 to make it threadedly connected with the external threaded cylinder 81, thereby indirectly driving the limit seat 88 to move rightward, and as the right side of the drainage tube 5 approaches the corresponding flange, the limit seat 88 is moved to move toward the end away from the center of the drainage tube 5, and the telescopic end of the telescopic column 86 and the spring 87 are contracted, so that the right side of the drainage tube 5 is unobstructed and intercepted. After the right side of the drainage tube 5 is aligned with the external connection flange axially, the force applied to the limit seat 88 is released, and the limit seat 88 is reset to the right side of the outer edge of the connection flange through the compression force of the spring 87. Then, the internal thread handle 82 is rotated forward to indirectly drive the limit seat 88 to move left through the threaded connection. The extrusion force during the left movement of the limit seat 88 squeezes the external connection flange and the right side of the drainage tube 5 tightly, thereby realizing the rapid installation of the capacitance level gauge when the cylinder is installed, and the later disassembly operation is convenient. The rubber sealing ring 9 is used to reduce the pressure between the drainage tube 5 and the external connection flange. When the device measures the liquid level, the control valve 6 on the drainage tube 5 is opened, and the external liquid enters through the drainage tube 5 on the lower side. The cylinder shell 1 and the probe rod 10 are two electrodes respectively. The liquid in the device is a dielectric. A constant voltage is applied to the cylinder shell 1 and the probe rod 10 through an external element. The single-chip microcomputer 2 starts the transmitter 11. The transmitter 11 detects the height signal of the liquid medium between the capacitance electrodes inside the device according to the current change through the probe rod 10, and transmits it to the single-chip microcomputer 2 in the form of an electrical signal, thereby realizing the liquid level measurement. When cleaning the cylinder-type capacitance level meter, close the control valve 6 on the drainage tube 5. The control valve 6 is opened to transport clean water into the device through the water inlet pipe 3. Then the single chip microcomputer 2 starts the motor 74 so that its output shaft drives the reciprocating screw 71 to rotate. The reciprocating screw 71 is threadedly connected so that the cleaning ring 72 moves back and forth vertically along the inner wall of the cylinder shell 1, thereby cleaning the impurities adhered to the inner wall of the cylinder shell 1. The cleaning ring 72 slides relative to the guide rod 73 to avoid horizontal shaking during its vertical movement, thereby improving its operating stability. Then the control valve 6 on the sewage pipe 4 is opened to discharge the sewage and impurities inside the device. It is easy to use.

[0029] It is worth noting that the single chip microcomputer 2 disclosed in the above embodiment can adopt MCS-51, the motor 74 can adopt DC4GN40-12-1800, the transmitter 11 can adopt SHC31, and the single chip microcomputer 2 controls the motor 74 and the transmitter 11 to work using methods commonly used in the prior art.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cylindrical capacitance level gauge, characterized in that: It comprises a cylinder shell (1), a dirt cleaning mechanism (7) and a quick-installation mechanism (8); Cylinder shell (1): a water inlet pipe (3) and evenly distributed drainage pipes (5) are respectively penetrated through the inner wall thereof, a sewage discharge pipe (4) is penetrated through the bottom wall of the cylinder shell (1), a probe rod (10) is provided on the top wall of the cylinder shell (1), and a transmitter (11) is provided at the upper end of the probe rod (10); A dirt cleaning mechanism (7): arranged inside the cylindrical shell (1); Quick-installation mechanism (8): it is arranged at the right end of the outer side of the drainage tube (5); The single-chip microcomputer (2) is also included, and the single-chip microcomputer (2) is arranged outside the cylindrical shell (1), the input end of the single-chip microcomputer (2) is electrically connected to an external power supply, and the single-chip microcomputer (2) is bidirectionally electrically connected to the transmitter (11).

2. A cylindrical capacitance level gauge according to claim 1, characterized in that: A control valve (6) is connected in series in the middle of the water inlet pipe (3), the sewage discharge pipe (4) and the drainage pipe (5).

3. A cylindrical capacitance level gauge according to claim 1, characterized in that: The cleaning mechanism (7) comprises a reciprocating screw (71), a cleaning ring (72) and a motor (74); the reciprocating screw (71) is rotatably connected to the inside of the cylindrical shell (1) via a bearing; the cleaning ring (72) is threadedly connected to the outer side of the reciprocating screw (71); a motor (74) is provided on the upper side of the cylindrical shell (1); an input end of the motor (74) is electrically connected to an output end of the single-chip computer (2); and an output shaft of the motor (74) is fixedly connected to the upper end of the reciprocating screw (71).

4. A cylindrical capacitance level gauge according to claim 3, characterized in that: The cleaning mechanism (7) further comprises a guide rod (73), wherein the guide rod (73) is arranged between the upper and lower walls of the cylinder shell (1), and the cleaning ring (72) is slidably connected to the guide rod (73).

5. The cylindrical capacitance level gauge according to claim 1, characterized in that: The quick-install mechanism (8) comprises an externally threaded barrel (81), an internally threaded handle (82), a rotating ring (83), a connecting rod (84), a round seat (85), a telescopic column (86) and a limit seat (88). The externally threaded barrel (81) is arranged at the right end of the outer side of the drainage tube (5). The outer side of the externally threaded barrel (81) is threadedly connected to the internally threaded handle (82). The right end of the outer side of the internally threaded handle (82) is rotatably connected to the rotating ring (83) via a bearing. The right end of the rotating ring (83) is provided with evenly distributed connecting rods (84). The right end of the connecting rod (84) is provided with a round seat (85). The side of the round seat (85) close to the center of the adjacent drainage tube (5) is provided with a limit seat (88) via a telescopic column (86).

6. A cylindrical capacitance level gauge according to claim 5, characterized in that: The quick-install mechanism (8) further comprises a spring (87), wherein the spring (87) is disposed between the round seat (85) and an adjacent limiting seat (88), and the spring (87) is movably sleeved with the outer end of an adjacent telescopic column (86).

7. The cylindrical capacitance level gauge according to claim 1, characterized in that: The right side of the drainage tube (5) is provided with a rubber sealing ring (9).

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