Liquid level metering and calibrating device capable of being operated automatically

Abstract

The utility model relates to the technical field of liquid level measurement and calibration, and discloses a liquid level measurement and calibration device capable of being operated automatically, which comprises a water tank, a controller is fixedly connected to one side of the water tank, a flange mounting plate is in threaded connection with the top of the water tank through bolts, and a floating ball liquid level meter is fixedly connected to the top of the flange mounting plate. A guide rod is fixedly connected to the bottom of the floating ball liquid level meter, a floating ball is slidably connected to the outer wall of the guide rod, a water tank inlet is formed in one side of the water tank, a water tank outlet is formed in one side of the water tank, a water conveying pipe is fixedly connected to one side of the water tank outlet, and a second electric valve is installed in the position, close to the water tank outlet, of the water conveying pipe. According to the automatic calibration device, the liquid level measured by the liquid pressure meter at the bottom of the water tank is compared with the liquid level measured by the floating ball liquid level meter, when the deviation is within the qualified range, the current locked liquid level is automatically unlocked, automatic calibration is completed, and the whole process can be automatically operated without manual operation.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level measurement and calibration, in particular to a liquid level measurement and calibration device capable of automatic operation. Background Art

[0002] The height of the liquid medium in the container is called the liquid level, and the instrument that measures the liquid level is called a liquid level metering device. The liquid level metering device is a type of physical instrument. It has the advantages of simple structure, easy use, stable performance, long service life, and easy installation and maintenance. Therefore, it is widely used in various industries such as food processing, chemical industry, water treatment, and pharmaceuticals, and the calibration of liquid level metering devices is also widely used.

[0003] However, the calibration of the existing liquid level metering device usually requires taking out the liquid level metering device and then calibrating it through a calibration device. This process requires the liquid level metering device to be disassembled and calibrated before installation, which involves a lot of manual operations and is time-consuming and labor-intensive. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a liquid level measurement and calibration device capable of automatic operation, aiming to improve the problem that a large amount of manual operation is required during the calibration of the liquid level measurement device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid level measurement and calibration device capable of automatic operation, comprising a water tank, one side of the water tank is fixedly connected to a controller, the top of the water tank is threadedly connected to a flange mounting plate by bolts, the top of the flange mounting plate is fixedly connected to a float level gauge, the bottom of the float level gauge is fixedly connected to a guide rod, the outer wall of the guide rod is slidably connected to a float, one side of the water tank is provided with a water tank inlet, one side of the water tank inlet is fixedly connected to a water pipe, a first electric valve is installed inside the water pipe near the water tank inlet, one side of the water tank is provided with a water tank outlet, one side of the water tank outlet is fixedly connected to a water pipe, and a second electric valve is installed inside the water pipe near the water tank outlet.

[0006] Preferably, the water tank inlet is fixedly connected to a water pump via a water pipe, and the input end of the water pump is fixedly connected to the water pipe.

[0007] Preferably, a support leg is fixedly connected to the bottom of the water tank.

[0008] Preferably, liquid pressure gauges are evenly installed on the bottom inner wall of the water tank.

[0009] Preferably, the guide rod is a hollow rod, and a float sensor is fixedly connected to the inner wall of the guide rod, and the float sensor matches the float.

[0010] Preferably, a guide rod fixing foot is fixedly connected to the bottom of the guide rod, and the guide rod fixing foot is fixedly connected to the bottom inner wall of the water tank.

[0011] Preferably, the guide rod passes through the flange mounting plate and the top of the water tank and is located at the inner center of the water tank.

[0012] Preferably, the controller is electrically connected to the first electric valve, the second electric valve, the liquid pressure gauge, the float level gauge, and the water pump.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the liquid level in the water tank is measured by a float level gauge. When calibration is required, a calibration signal is sent through a controller, and then the first electric valve is controlled by the controller to be closed, and the second electric valve is opened at the same time, so as to lower the liquid level inside the water tank until the liquid level of the float level gauge returns to zero, and then the second electric valve is closed, and the first electric valve is opened. The liquid level of the water tank is adjusted to the upper limit set by the float level gauge by a water pump, and then the first electric valve is closed. The liquid level measured by the liquid pressure gauge at the bottom of the water tank is compared with the liquid level measured by the float level gauge. If the deviation is within the qualified range, the current liquid level is automatically unlocked to complete the automatic calibration. The whole process can be automatically operated without manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional schematic diagram of a liquid level measurement and calibration device capable of automatic operation proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an automatically operated liquid level measurement and calibration device proposed by the utility model;

[0017] Figure 3 The utility model discloses a schematic diagram of the internal structure of a guide rod of a liquid level measurement and calibration device capable of automatic operation.

[0018] Legend:

[0019] 1. Water tank; 2. Controller; 3. Second electric valve; 4. Water tank outlet; 5. Support legs; 6. Float level gauge; 7. Flange mounting plate; 8. Water pump; 9. Water tank inlet; 10. First electric valve; 11. Water pipe; 12. Float; 13. Liquid pressure gauge; 14. Guide rod fixing foot; 15. Float sensor; 16. Bolts; 17. Guide rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings of the specification 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 of 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.

[0021] Reference Figure 1-Figure 3 The utility model provides an embodiment: a liquid level measurement and calibration device capable of automatic operation, comprising a water tank 1, a controller 2 is fixedly connected to one side of the water tank 1, a flange mounting plate 7 is threadedly connected to the top of the water tank 1 through a bolt 16, a float liquid level gauge 6 is fixedly connected to the top of the flange mounting plate 7, a guide rod 17 is fixedly connected to the bottom of the float liquid level gauge 6, a float 12 is slidably connected to the outer wall of the guide rod 17, a water tank inlet 9 is provided on one side of the water tank 1, a water pipe 11 is fixedly connected to one side of the water tank inlet 9, a first electric valve 10 is installed in the water pipe 11 near the water tank inlet 9, a water tank outlet 4 is provided on one side of the water tank 1, a water pipe 11 is fixedly connected to one side of the water tank outlet 4, a first electric valve 10 is installed in the water pipe 11 near the water tank outlet 4 There is a second electric valve 3; the water tank inlet 9 is fixedly connected to the water pump 8 through the water pipe 11, and the input end of the water pump 8 is fixedly connected to the water pipe 11; the bottom of the water tank 1 is fixedly connected to the support leg 5; the bottom inner wall of the water tank 1 is evenly installed with a liquid pressure gauge 13; the guide rod 17 is a hollow rod, and the inner wall of the guide rod 17 is fixedly connected to a float sensor 15, and the float sensor 15 matches the float 12; the bottom of the guide rod 17 is fixedly connected to a guide rod fixing foot 14, and the guide rod fixing foot 14 is fixedly connected to the bottom inner wall of the water tank 1; the guide rod 17 passes through the flange mounting plate 7 and the top of the water tank 1 and is located at the inner center of the water tank 1; the controller 2 is electrically connected to the first electric valve 10, the second electric valve 3, the liquid pressure gauge 13, the float level gauge 6, and the water pump 8.

[0022] Specifically, the flange mounting plate 7 at the bottom of the float level gauge 6 is threadedly connected to the top center of the water tank 1 by bolts 16, the position of the float 12 is sensed by the float sensor 15 in the guide rod 17, and then the liquid level data inside the water tank 1 is obtained by calculation by the float level gauge 6 and transmitted to the controller 2, the liquid level pressure data is measured by the liquid pressure gauge 13 on the inner wall at the bottom of the water tank 1 and transmitted to the controller 2, and the data can be analyzed and calibrated by the controller 2; the guide rod 17 is fixed by the guide rod fixing foot 14 to prevent the guide rod 17 from shaking when liquid enters, resulting in unstable data of the float level gauge 6, the water pump 8 transports water to the water tank 1 through the water pipe 11, the entry of liquid is controlled by the first electric valve 10, and the discharge of liquid is controlled by the second electric valve 3, so that the liquid level control inside the water tank 1 can be achieved.

[0023] Working principle: When the liquid level metering device needs to be calibrated, a calibration signal is sent by operating the controller 2, and then the controller 2 controls the first electric valve 10 to close and the second electric valve 3 to open to lower the liquid level inside the water tank 1 until the liquid level of the float level gauge 6 returns to zero. At this time, the liquid level pressure data measured by the liquid pressure gauge 13 is compared and calibrated with the liquid level data measured by the float level gauge 6, and then the first electric valve 10 is opened to adjust the liquid level inside the water tank 1 to the upper limit set by the float level gauge 6, and then the first electric valve 10 is closed. At this time, the liquid level pressure data measured by the liquid pressure gauge 13 is compared and calibrated again with the liquid level data measured by the float level gauge 6 through the controller 2. If the deviation is within the qualified range, the current liquid level is automatically unlocked and the automatic calibration is completed. The whole process can be automatically operated without manual operation.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid level measurement and calibration device capable of automatic operation, comprising a water tank (1), characterized in that: A controller (2) is fixedly connected to one side of the water tank (1); a flange mounting plate (7) is threadedly connected to the top of the water tank (1) via bolts (16); a float level gauge (6) is fixedly connected to the top of the flange mounting plate (7); a guide rod (17) is fixedly connected to the bottom of the float level gauge (6); a float (12) is slidably connected to the outer wall of the guide rod (17); a water tank inlet (9) is provided on one side of the water tank inlet (9); a water pipe (11) is fixedly connected to one side of the water tank inlet (9); a first electric valve (10) is installed inside the water pipe (11) near the water tank inlet (9); a water tank outlet (4) is provided on one side of the water tank outlet (4); a water pipe (11) is fixedly connected to one side of the water tank outlet (4); a second electric valve (3) is installed inside the water pipe (11) near the water tank outlet (4).

2. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The water tank inlet (9) is fixedly connected to a water pump (8) via a water pipe (11), and the input end of the water pump (8) is fixedly connected to the water pipe (11).

3. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The bottom of the water tank (1) is fixedly connected with a supporting leg (5).

4. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: Liquid pressure gauges (13) are evenly mounted on the inner wall of the bottom of the water tank (1).

5. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The guide rod (17) is a hollow rod, and a float sensor (15) is fixedly connected to the inner wall of the guide rod (17), and the float sensor (15) matches the float (12).

6. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The bottom of the guide rod (17) is fixedly connected to a guide rod fixing foot (14), and the guide rod fixing foot (14) is fixedly connected to the bottom inner wall of the water tank (1).

7. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The guide rod (17) passes through the flange mounting plate (7) and the top of the water tank (1) and is located at the inner center of the water tank (1).

8. The liquid level measurement and calibration device capable of automatic operation according to claim 1, characterized in that: The controller (2) is electrically connected to a first electric valve (10), a second electric valve (3), a liquid pressure gauge (13), a float liquid level gauge (6), and a water pump (8).

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