External water level sensing device

Abstract

The utility model discloses an external water level sensing device which comprises a barrel, a top liquid level sensor, a lifting device, a bottom liquid level sensor and a controller, the barrel is used for bearing a suction water source of an external water inlet pump, a drainage pipe is arranged at the bottom of the barrel, and a drainage valve is arranged on the drainage pipe; the lifting device is arranged on the cylinder body; the top liquid level sensor is clamped at the lifting end of the lifting device, and the detection end of the top liquid level sensor is close to the outer wall of the barrel; the bottom liquid level sensor is arranged at the bottom of the barrel; the water inlet pump, the drain valve, the top liquid level sensor and the bottom liquid level sensor are respectively connected with the controller; wherein the top liquid level sensor and the bottom liquid level sensor are both non-contact liquid level sensors. Through the arrangement of the lifting device, the height of the top liquid level sensor can be adjusted according to actual requirements so as to adapt to application scenes where water level monitoring points need to be frequently changed, and intelligent control over the whole system is achieved by combining the controller for use.

Description

Technical Field

[0001] The utility model relates to the technical field of water level detection, in particular to an external water level sensing device. Background Art

[0002] In wastewater treatment plants and water treatment facilities, precise control and monitoring of liquid levels are crucial to ensure efficient operation of the system.

[0003] Traditional water level monitoring methods typically rely on contact sensors or mechanical floats. These devices are in direct contact with water, and long-term use may cause sensor corrosion or contamination, affecting measurement accuracy and reliability.

[0004] With the development of science and technology, non-contact liquid level sensing technology has gradually become a more advanced and reliable option. This type of sensor does not directly contact the liquid, avoiding equipment damage caused by water quality problems, while improving the sensitivity and accuracy of detection.

[0005] However, most existing non-contact liquid level sensing devices are fixedly installed and cannot flexibly adjust the sensing height according to actual needs. In particular, in environments with large changes in depth, the fixed sensing position cannot adapt to water level detection requirements at different depths. For example, in the reverse osmosis membrane separation process of water treatment, a higher water level is required in the pretreatment stage to increase the processing volume, while in the subsequent disinfection step, a relatively low water level is required to reduce chemical consumption. Therefore, the fixed sensing position cannot adapt to the detection needs of such dynamic liquid level changes. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an external water level sensing device, comprising: a cylinder, a top liquid level sensor, a lifting device, a bottom liquid level sensor and a controller, wherein the cylinder is used to receive the suction water source of an external water inlet pump, a drain pipe is provided at the bottom of the cylinder, and a drain valve is provided on the drain pipe; the lifting device is provided on the cylinder; the top liquid level sensor is provided on a buckle, the buckle is engaged with the lifting end of the lifting device, and the detection end of the top liquid level sensor is close to the outer wall of the cylinder; the bottom liquid level sensor is provided at the bottom of the cylinder; the water inlet pump, the drain valve, the top liquid level sensor and the bottom liquid level sensor are respectively connected to the controller; wherein the top liquid level sensor and the bottom liquid level sensor are both non-contact liquid level sensors.

[0008] In addition, the external water level sensing device proposed in the present invention may also have the following additional technical features:

[0009] As a further description of the above technical solution: the lifting device includes a driving motor, a bidirectional lead screw, a lead screw slider and an annular sleeve, wherein mounting plates are respectively provided on the top and bottom outer walls of the cylinder; the driving motor is arranged on one of the mounting plates; the bidirectional lead screw is rotatably arranged between the two mounting plates and is connected to the output end of the driving motor; the lead screw slider is arranged on the bidirectional lead screw; the annular sleeve is arranged outside the cylinder and is connected to the lead screw slider.

[0010] As a further description of the above technical solution: the lifting device also includes a sliding rod and a sliding sleeve, wherein the sliding rod and the bidirectional screw are arranged on both sides of the cylinder relative to each other; the sliding sleeve is slidably arranged on the sliding rod and is connected to the annular sleeve.

[0011] As a further description of the above technical solution: lifting ears are respectively provided on both sides of the annular sleeve, and the sliding sleeve and the lead screw slider are respectively embedded in the two lifting ears.

[0012] As a further description of the above technical solution: the sliding bar is marked with scales.

[0013] As a further description of the above technical solution: adhesive tapes are respectively provided on both sides of the bottom liquid level sensor, and the adhesive tapes are adhered to the outer wall of the cylinder.

[0014] As a further description of the above technical solution: the controller includes a microprocessor, a power supply module, a communication interface and an alarm module, wherein the top liquid level sensor and the bottom liquid level sensor are connected to the input port of the microprocessor through a signal line, and the microprocessor is connected to the water inlet pump and the drain valve through the controller circuit; the communication interface is connected to the microprocessor through a serial communication protocol or a network interface to realize remote monitoring and data transmission; the alarm module is connected to the microprocessor, and when it is detected that the liquid level exceeds a preset range, the alarm module is triggered by the microprocessor to send an alarm signal; the power supply module supplies power to the microprocessor, the communication interface and the alarm module respectively.

[0015] According to the external water level sensing device of the present invention, through the setting of the lifting device, the height of the top liquid level sensor can be quickly and accurately adjusted according to actual needs to adapt to application scenarios that require frequent changes in water level monitoring points, and combined with the controller, intelligent control of the entire system is realized.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a structural diagram of an external water level sensing device according to an embodiment of the present utility model;

[0019] Figure 2 It is a structural schematic diagram of a lifting device according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of an annular sleeve according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of a bottom liquid level sensor according to an embodiment of the present utility model;

[0022] Figure 5 This is a control system block diagram of an external water level sensing device according to one embodiment of the present invention;

[0023] As shown in the figure:

[0024] 100. Cylinder; 101. Drain pipe; 102. Support leg; 200. Top liquid level sensor; 201. Buckle; 300. Lifting device; 301. Mounting plate; 310. Drive motor; 320. Bidirectional screw; 330. Screw slider; 340. Annular sleeve; 341. Lifting ear; 350. Slide rod; 360. Sliding sleeve; 400. Bottom liquid level sensor; 401. Adhesive tape; 500. Controller. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The external water level sensing device of the embodiment of the present utility model is described below with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 5 As shown, the external water level sensing device of the embodiment of the present invention may include a cylinder 100 , a top liquid level sensor 200 , a lifting device 300 , a bottom liquid level sensor 400 and a controller 500 .

[0028] Among them, the cylinder 100 is used to receive the water source sucked by an external water inlet pump (not shown in the figure), that is, the top of the cylinder 100 is connected to a liquid inlet pipe, and a water inlet pump is provided on the liquid inlet pipe. The external water source is sucked into the cylinder 100 through the water inlet pump, and a drain pipe 101 is provided at the bottom of the cylinder 100, and a drain valve is provided on the drain pipe 101. The lifting device 300 is provided on the cylinder 100, and the bottom of the cylinder 100 is provided with a support leg 102 for supporting the entire device.

[0029] like Figure 3 As shown, the top liquid level sensor 200 is set on the buckle 201, the buckle 201 is engaged with the lifting end of the lifting device 300, and the detection end of the top liquid level sensor 200 is close to the outer wall of the cylinder 100, and the bottom liquid level sensor 400 is set at the bottom of the cylinder 100. The top liquid level sensor 200 and the bottom liquid level sensor 400 are both non-contact liquid level sensors.

[0030] The water inlet pump, the water discharge valve, the top liquid level sensor 200 and the bottom liquid level sensor 400 are respectively connected to the controller 500 .

[0031] Specifically, when monitoring the liquid level in the cylinder 100, the water inlet pump discharges the external water source into the cylinder 100. As the liquid level rises until it reaches the top liquid level sensor 200, the top liquid level sensor 200 transmits the liquid level signal to the controller 500, and the controller 500 turns off the water inlet pump to prevent the liquid level from overflowing.

[0032] When draining the water in the cylinder 100, the relevant staff can open the drain valve through the controller 500. As the water is drained, the liquid level drops to the bottom liquid level sensor 400, and the bottom liquid level sensor 400 transmits the liquid level signal to the controller 500, and the controller 500 closes the drain valve.

[0033] When the monitoring height of the liquid level needs to be adjusted, the relevant staff can control the lifting device 300 to move up and down, and the top liquid level sensor 200 follows the lifting device 300 to move to the required position.

[0034] In one embodiment of the present invention, Figure 2 As shown, the lifting device 300 includes a driving motor 310 , a bidirectional lead screw 320 , a lead screw slider 330 and an annular sleeve 340 .

[0035] Among them, mounting plates 301 are respectively provided on the top and bottom outer walls of the cylinder 100, the drive motor 310 is arranged on one of the mounting plates 301, the bidirectional screw 320 is rotatably arranged between the two mounting plates 301 and is connected to the output end of the drive motor 310, the screw slider 330 is arranged on the bidirectional screw 320, and the annular sleeve 340 is sleeved on the outside of the cylinder 100 and is connected to the screw slider 330.

[0036] In order to further improve the stability of the lifting device 300 during lifting, the lifting device 300 further comprises a sliding rod 350 and a sliding sleeve 360.

[0037] The sliding rod 350 is arranged on both sides of the barrel 100 opposite to the bidirectional screw rod 320, and the sliding sleeve 360 is slidingly arranged on the sliding rod 350 and connected with the annular sleeve 340.

[0038] It should be noted that when the relevant staff needs to adjust the detection height of the liquid level, the driving motor 310 is first controlled to be turned on, and then the driving motor 310 drives the bidirectional screw rod 320 to rotate, so that the screw block 330 moves on the bidirectional screw rod 320 to drive the annular sleeve 340 and the top liquid level sensor 200 to move, and when the annular sleeve 340 moves, the sliding sleeve 360 connected therewith slides on the sliding rod 350.

[0039] As a possible case, as shown in Figure 3 The annular sleeve 340 is provided with two lifting lugs 341 on both sides, and the sliding sleeve 360 and the screw block 330 are respectively embedded in the two lifting lugs 341.

[0040] In order to facilitate the relevant personnel to observe the specific detection position, the sliding rod 350 is marked with a scale mark, and the relevant personnel can observe the movement of the sliding sleeve 360 on the sliding rod 350 and judge whether the specific position is correct through the scale mark on the sliding rod 350.

[0041] In an embodiment of the present application, as shown in Figure 4 The bottom liquid level sensor 400 is provided with two adhesive tapes 401 on both sides, and the adhesive tapes 401 are adhered to the outer wall of the barrel 100.

[0042] It should be noted that through the setting of the adhesive tape 401, it is convenient for the relevant staff to take down the bottom liquid level sensor 400.

[0043] In an embodiment of the present application, the controller 500 comprises a microprocessor, a power module, a communication interface and an alarm module.

[0044] The top liquid level sensor 200 and the bottom liquid level sensor 400 are connected with the input port of the microprocessor through signal lines, and the microprocessor is connected with the water inlet pump and the drain valve through the controller 500 circuit, according to the preset logic algorithm, the microprocessor judges whether the current water level state is within the safe range, and according to the instruction to the water inlet pump and the drain valve, the water level is maintained at the ideal water level through the dynamic control of the water inlet pump and the drain valve.

[0045] The communication interface is connected to the microprocessor through a serial communication protocol (such as RS-232 / 485) or a network interface (such as Ethernet, Wi-Fi, etc.) to achieve remote monitoring and data transmission.

[0046] It should be noted that operators can access the system from a remote location through the communication interface to view real-time water level information, adjust setting parameters, and even execute certain specific operation commands.

[0047] The alarm module is connected to the microprocessor. When the liquid level is detected to be beyond the preset range, the microprocessor triggers the alarm module to send an alarm signal. The power module supplies power to the microprocessor, communication interface and alarm module respectively.

[0048] The controller 500 realizes the intelligent management and maintenance of the external water level sensing device, which not only improves the work efficiency but also enhances the reliability and safety of the system.

[0049] In summary, according to the external water level sensing device of the embodiment of the present invention, through the setting of the lifting device 300, the height of the top liquid level sensor 200 can be quickly and accurately adjusted according to actual needs to adapt to application scenarios that require frequent changes in water level monitoring points, and combined with the controller 500, intelligent control of the entire system is realized.

[0050] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An external water level sensing device, characterized in that: include: A cylinder (100), a top liquid level sensor (200), a lifting device (300), a bottom liquid level sensor (400) and a controller (500), wherein: The cylinder (100) is used to receive the water source of the external water inlet pump, and a drain pipe (101) is provided at the bottom of the cylinder (100), and a drain valve is provided on the drain pipe (101); The lifting device (300) is arranged on the cylinder (100); The top liquid level sensor (200) is arranged on a buckle (201), the buckle (201) is engaged with the lifting end of the lifting device (300), and the detection end of the top liquid level sensor (200) is close to the outer wall of the cylinder (100); The bottom liquid level sensor (400) is arranged at the bottom of the cylinder (100); The water inlet pump, the drain valve, the top liquid level sensor (200) and the bottom liquid level sensor (400) are respectively connected to the controller (500); Wherein, the top liquid level sensor (200) and the bottom liquid level sensor (400) are both non-contact liquid level sensors.

2. The external water level sensing device according to claim 1, characterized in that: The lifting device (300) includes a driving motor (310), a bidirectional lead screw (320), a lead screw slider (330) and an annular sleeve (340), wherein: Mounting plates (301) are respectively provided on the top and bottom outer walls of the cylinder (100); The driving motor (310) is arranged on one of the mounting plates (301); The bidirectional lead screw (320) is rotatably disposed between the two mounting plates (301) and is connected to the output end of the drive motor (310); The lead screw slider (330) is arranged on the bidirectional lead screw (320); The annular sleeve (340) is sleeved outside the cylinder (100) and is connected to the lead screw slider (330).

3. The external water level sensing device according to claim 2, characterized in that: The lifting device (300) further includes a sliding rod (350) and a sliding sleeve (360), wherein: The sliding rod (350) and the bidirectional lead screw (320) are arranged on both sides of the cylinder (100) opposite to each other; The sliding sleeve (360) is slidably arranged on the sliding rod (350) and is connected to the annular sleeve (340).

4. The external water level sensing device according to claim 3, characterized in that: Lifting ears (341) are respectively provided on both sides of the annular sleeve (340), and the sliding sleeve (360) and the lead screw slider (330) are respectively embedded in the two lifting ears (341).

5. The external water level sensing device according to claim 3, characterized in that: The slide bar (350) is marked with scale.

6. The external water level sensing device according to claim 1, characterized in that: Adhesive tapes (401) are respectively provided on both sides of the bottom liquid level sensor (400), and the adhesive tapes (401) are adhered to the outer wall of the cylinder (100).

7. The external water level sensing device according to claim 1, characterized in that: The controller (500) includes a microprocessor, a power module, a communication interface and an alarm module, wherein: The top liquid level sensor and the bottom liquid level sensor are connected to the input port of the microprocessor through signal lines, and the microprocessor is connected to the water inlet pump and the drain valve through the controller circuit; The communication interface is connected to the microprocessor via a serial communication protocol or a network interface to achieve remote monitoring and data transmission; The alarm module is connected to the microprocessor, and when it detects that the liquid level exceeds a preset range, the microprocessor triggers the alarm module to send an alarm signal; The power supply modules respectively supply power to the microprocessor, the communication interface and the alarm module.

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