A liquid level measuring device for a kitchen waste sewage storage tank

Abstract

This utility model relates to a liquid level measuring device for a kitchen waste wastewater storage tank, comprising a storage tank body, a mounting plate, and a weighing mechanism. The storage tank body is mounted on the mounting plate. Multiple weighing mechanisms are arrayed at the bottom of the mounting plate. Each weighing mechanism includes an adjusting seat, a weight sensor, and a spherical hinge seat. The upper end of the adjusting seat is connected to the mounting plate, the lower end of the adjusting seat is connected to the upper end of the spherical hinge seat, and the lower end of the spherical hinge seat is connected to the weight sensor. The weight sensor is mounted between the mounting plate and the ground via the spherical hinge seat, allowing for fine-tuning at a certain angle. The spherical hinge seat ensures that the weight sensor is subjected to vertical and uniform force, eliminating stress interference and avoiding stress concentration. This device measures the overall weight of the storage tank body using a modular weighing mechanism and calculates the liquid level inside the storage tank, solving the problems of low measurement accuracy and susceptibility to failure caused by suspended solids, grease, foam, etc., in traditional liquid level sensors.

Description

Technical Field

[0001] This utility model relates to the technical field of kitchen waste treatment equipment, and in particular to a liquid level measuring device for a kitchen waste sewage storage tank. Background Technology

[0002] Food wastewater storage tanks are critical equipment in the treatment process, and their liquid level measurement typically relies on float-type, ultrasonic, or radar level sensors. However, the large amount of suspended solids, grease, and impurities contained in wastewater easily adhere to the sensor surface, leading to decreased accuracy or malfunction. At the same time, foam generated during storage can interfere with the measurement of ultrasonic / radar sensors, distorting the liquid level data. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a liquid level measuring device for a kitchen waste sewage storage tank.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the liquid level measuring device for the kitchen waste and sewage storage tank of this utility model includes a storage tank body, a mounting plate, and multiple weighing mechanisms, wherein the storage tank body is disposed on the mounting plate.

[0007] Multiple weighing mechanisms are arrayed at the bottom of the mounting plate. Each weighing mechanism includes an adjusting seat, a weight sensor, and a spherical hinge seat. The upper end of the adjusting seat is connected to the mounting plate, the lower end of the adjusting seat is connected to the upper end of the spherical hinge seat, and the lower end of the spherical hinge seat is connected to the weight sensor.

[0008] Optionally, the adjusting seat includes a fixed part and an adjusting part connected to each other, the fixed part being connected to the upper end of the spherical hinge seat, and the adjusting part being connected to the mounting plate.

[0009] Optionally, the fixing part is a first sleeve, the adjusting part is a sleeve rod, the sleeve rod is connected to the first sleeve, the sleeve rod can move along the axial direction of the first sleeve, and the sleeve rod is fixedly connected to the mounting plate.

[0010] Optionally, the weighing mechanism further includes a buffer limiting mechanism connected below the weight sensor.

[0011] Optionally, the buffer limiting mechanism includes a base and a second sleeve, a third sleeve, a spring, and a guide limiting assembly arranged coaxially.

[0012] The second sleeve is connected to the base, the third sleeve is slidably sleeved inside the second sleeve, the spring abuts between the second sleeve and the third sleeve, and the upper end of the third sleeve is connected to the weight sensor.

[0013] The guide and limit assembly is disposed inside the third sleeve, the lower end of the guide and limit assembly is connected to the base, and the upper end of the guide and limit assembly is connected to the lower end of the weight sensor.

[0014] Optionally, the third sleeve is provided with a graduated displacement indicator and an extreme position warning line.

[0015] Optionally, the weighing mechanism further includes a protective component, which includes a fourth sleeve and a slider. The fourth sleeve is a hollow structure with an open top. The slider is slidably connected to the fourth sleeve. A sealing ring is provided between the outer wall of the slider and the interior of the fourth sleeve.

[0016] The slider portion is located outside the fourth sleeve, and the portion outside the fourth sleeve is connected to the lower end of the spherical hinge seat;

[0017] The weight sensor is located inside the fourth sleeve, the weight sensor is disposed on the bottom plate of the fourth sleeve, and the weight sensor is connected to the slider.

[0018] Optionally, the fourth sleeve is filled with an inert gas.

[0019] Optionally, the liquid level measuring device for the kitchen waste wastewater storage tank further includes a controller, and the weight sensor is connected to the controller via a wire.

[0020] Optionally, the top of the storage tank is provided with an injection port and a drain port, and the injection port and the drain port are detachably connected to a pipeline.

[0021] (III) Beneficial Effects

[0022] The weight sensor is installed between the mounting plate and the ground via a spherical hinge, allowing for fine-tuning of a certain angle. The spherical hinge ensures that the weight sensor is subjected to vertical and uniform force, eliminating stress interference and avoiding stress concentration.

[0023] The device of this application measures the overall weight of the storage tank body through a modular weighing mechanism and obtains the liquid level inside the storage tank body by conversion, which solves the problems of low measurement accuracy and easy failure of traditional liquid level sensors caused by suspended solids, grease, foam and other substances. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the liquid level measuring device for a kitchen waste and sewage storage tank according to the present invention.

[0025] Figure 2 This is a schematic diagram of the buffer limiting mechanism of the liquid level measuring device for the kitchen waste and sewage storage tank of this utility model.

[0026] Figure 3 This is a schematic diagram showing the installation of the weight sensor in the liquid level measuring device for the kitchen waste and sewage storage tank of this utility model.

[0027] [Explanation of Labels in the Attached Image]

[0028] 1: Storage tank body; 11: Liquid filling port;

[0029] 2: Mounting plate;

[0030] 3: Weighing mechanism;

[0031] 31: Adjustment seat; 311: Fixing part; 312: Adjustment part;

[0032] 32: Weight sensor;

[0033] 33: Spherical hinge seat;

[0034] 34: Buffer limiting mechanism; 340: Base; 341: Second sleeve; 342: Third sleeve; 343: Spring; 344: Guide limiting assembly; 345: Scale displacement indicator; 346: Limit position warning line;

[0035] 35: Protective component; 351: Fourth sleeve; 352: Slider;

[0036] 4: Controller. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0038] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0039] This utility model provides a liquid level measuring device for kitchen waste and sewage storage tanks. It is a device that indirectly measures the liquid level by weighing and converting the liquid level. Through optimized support structure, sealing protection and limit protection design, it further improves the measurement accuracy, environmental adaptability and maintenance convenience, and avoids the structural defects of traditional liquid level sensors and existing weighing devices.

[0040] like Figure 1 As shown, the liquid level measuring device for a kitchen waste wastewater storage tank includes a storage tank body 1, a mounting plate 2, and multiple weighing mechanisms 3. The mounting plate 2 is horizontally positioned, and the storage tank body 1 is fixedly mounted on the top surface of the mounting plate 2 for storing wastewater. Multiple weighing mechanisms 3 are arrayed at the bottom of the mounting plate 2, evenly distributing the weight of the mounting plate 2 and providing stable support for the mounting plate 2, the storage tank body 1, and the wastewater, while simultaneously detecting the total weight of the three components and their associated structures in real time. Specifically, the weighing mechanism 3 includes an adjusting seat 31, a weight sensor 32, and a spherical hinge seat 33. The upper end of the adjusting seat 31 is connected to the bottom surface of the mounting plate 2, the lower end of the adjusting seat 31 is connected to the upper end of the spherical hinge seat 33, and the lower end of the spherical hinge seat 33 is connected to the weight sensor 32. The weight sensor 32 is preferably a resistance strain gauge weight sensor 32, which changes the resistance of a strain gauge through the deformation of an elastic body under force. A weight sensor 32 is installed between the mounting plate 2 and the ground via a spherical hinge seat 33, allowing for fine-tuning at a certain angle. The spherical hinge seat 33 ensures that the weight sensor 32 is subjected to vertical and uniform force, eliminating stress interference and avoiding stress concentration. The device of this application measures the overall weight of the storage tank body 1 through a modular weighing mechanism 3, and indirectly obtains the liquid level inside the storage tank body 1 through conversion, solving the problems of low measurement accuracy and easy failure of traditional liquid level sensors caused by suspended solids, grease, foam, etc.

[0041] It should be noted that wastewater from the same batch generally has the same density, so the density of the wastewater needs to be obtained and the equipment calibrated during the initial treatment. If different batches of wastewater with significantly different compositions need to be treated, the above calibration can be performed only before or after each feeding.

[0042] Further, see Figure 1The adjusting seat 31 includes a fixed part 311 and an adjusting part 312 connected to each other. The fixed part 311 is connected to the upper end of the spherical hinge seat 33, and the adjusting part 312 is connected to the mounting plate 2. The fixed part 311 is a first sleeve, and the adjusting part 312 is a sleeve rod. The sleeve rod is slidably fitted inside the first sleeve and can move axially along the first sleeve. The sleeve rod is fixedly connected to the mounting plate 2. The height of the mounting plate 2 at the sleeve rod support position is adjusted by adjusting the extension length of the sleeve rod. The adjusting seats 31 of multiple weighing mechanisms 3 cooperate to adjust and level the mounting plate 2. Preferably, the first sleeve and the sleeve rod are connected by threads. The extension length of the sleeve rod is adjusted by rotating the first sleeve or the sleeve rod to move axially along the first sleeve.

[0043] See Figure 1 The weighing mechanism 3 also includes a buffer limiting mechanism 34, which is connected below the weight sensor 32.

[0044] like Figure 2 and Figure 3 As shown, the buffer limiting mechanism 34 includes a base 340 and coaxially arranged second sleeve 341, third sleeve 342, spring 343, and guide limiting assembly 344. The base 340 is fixedly installed on the ground, and the second sleeve 341 is connected to the base 340. Preferably, the base 340 and the second sleeve 341 are an integral structure. The third sleeve 342 is slidably sleeved inside the second sleeve 341. The spring 343 abuts against the second sleeve 341 and the third sleeve 342. The upper end of the third sleeve 342 is connected to the weight sensor 32. The spring 343 buffers the weight sensor 32 and the mounting plate 2 to prevent impact damage during sewage filling. The guide limiting assembly 344 is disposed inside the third sleeve 342. The lower end of the guide limiting assembly 344 is connected to the base 340, and the upper end of the guide limiting assembly 344 is connected to the lower end of the weight sensor 32. Specifically, the guide and limit assembly 344 adopts a structure of interlocking guide posts and guide sleeves. The guide sleeve is vertically mounted on the base 340, and the upper end of the guide post is connected to the bottom of the weight sensor 32. When the spring 343 is compressed, the guide post slides along the axial direction of the guide sleeve, thus providing guidance and limiting. Alternatively, air can be injected between the guide post and the guide sleeve to achieve a cushioning effect for the cylinder.

[0045] See Figure 2The outer column side of the third sleeve 342 is equipped with a graduated displacement indicator 345 and an extreme position warning line 346. The extreme position warning line 346 indicates the overload level as the third sleeve 342 sinks. In the empty tank state, the height difference between the top surfaces of the second sleeve 341 and the third sleeve 342 is 5mm. When the third sleeve 342 displaces downward by 2mm, it reaches the warning value. When the third sleeve 342 displaces downward by 5mm, the extreme position warning line 346 descends to the position of the top surface of the second sleeve 341, reaching the emergency stop threshold, thus realizing a visual limit warning.

[0046] like Figure 3 As shown, the weighing mechanism 3 also includes a protective component 35, which includes a fourth sleeve 351 and a slider 352. The fourth sleeve 351 is a hollow tubular structure with an open upper end. The slider 352 is slidably connected to the fourth sleeve 351, and a sealing ring is provided between the outer wall of the slider 352 and the interior of the fourth sleeve 351. Part of the slider 352 is located outside the fourth sleeve 351, and the part outside the fourth sleeve 351 is connected to the lower end of the spherical hinge seat 33. After being pressed by the spherical hinge seat 33, the slider 352 slides downward along the axial direction of the fourth sleeve 351. The weight sensor 32 is located inside the fourth sleeve 351 and is disposed on the bottom plate of the fourth sleeve 351. The weight sensor 32 is connected to the slider 352. The slider 352 slides downward and presses the sensing component of the weight sensor 32, thereby obtaining the weight of the slider 352 and the above structure through the weight sensor 32. The pressure value of the weight sensor 32 is much greater than the frictional force between the outer wall of the slider 352 and the inside of the fourth sleeve 351, so it can be ignored.

[0047] Preferably, the fourth sleeve 351 is filled with inert gas to form an inert gas barrier, preventing corrosive gases such as hydrogen sulfide released from kitchen waste sewage from penetrating into the weight sensor 32, while also buffering the shell deformation stress caused by drastic temperature changes during sewage treatment. The shell of the weight sensor 32 is made of stainless steel, and the fourth sleeve 351 is made of fiberglass. The inert gas is preferably argon, and vacuum filling is used with an initial pressure of 0.1 MPa. 0.1 MPa is equivalent to only 1 kg / cm³. 2 (Approximately 1 atmosphere), while the weight sensor 32 has a range of up to 5000 kg, and the background noise error caused by air pressure is <0.01%, which can be ignored.

[0048] See Figure 1The liquid level measuring device for the kitchen waste and sewage storage tank also includes a controller 4. The controller 4 is a conventional device used to convert weight data into volume data and display it as liquid level data. The weight sensor 32 is connected to the controller 4 by wires. In one embodiment, the wires are fitted with a corrugated tube and mounted on the mounting plate 2. The corrugated tube is made of oil-resistant nitrile rubber. Multiple cylindrical brackets are provided on the mounting plate 2, and these brackets are connected to the mounting plate 2 via bearings to achieve flexible rotation. An expansion joint is provided on the mounting plate 2, and the corrugated tube is connected to the expansion joint, with a compensation range of ±50mm. The outer layer of the corrugated tube is wrapped with a silicone heat insulation sleeve. The signal line and power line are flexibly connected by the corrugated tube, isolating the tank from the mechanical stress of the wiring and preventing interference from wiring vibration or settlement to the weight sensor 32, thereby preventing external forces from being transmitted to the tank and affecting the weighing accuracy.

[0049] See Figure 1 The storage tank 1 has an injection port 11 and a drain port on its top. The injection port 11 and the drain port are detachably connected to the pipeline. The inlet / outlet water pipes adopt a flexible connection structure to eliminate interference from pipeline stress symmetry.

[0050] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A kitchen garbage sewage storage tank liquid level measuring device, characterized by, The liquid level measuring device for the kitchen waste sewage storage tank includes a storage tank body (1), a mounting plate (2), and multiple weighing mechanisms (3), wherein the storage tank body (1) is mounted on the mounting plate (2); Multiple weighing mechanisms (3) are arrayed at the bottom of the mounting plate (2). Each weighing mechanism (3) includes an adjusting seat (31), a weight sensor (32), and a spherical hinge seat (33). The upper end of the adjusting seat (31) is connected to the mounting plate (2), the lower end of the adjusting seat (31) is connected to the upper end of the spherical hinge seat (33), and the lower end of the spherical hinge seat (33) is connected to the weight sensor (32).

2. The kitchen garbage sewage storage tank liquid level measuring device according to claim 1, characterized in that, The adjusting seat (31) includes a fixing part (311) and an adjusting part (312) connected to each other. The fixing part (311) is connected to the upper end of the spherical hinge seat (33), and the adjusting part (312) is connected to the mounting plate (2).

3. The kitchen garbage sewage storage tank liquid level measuring device according to claim 2, characterized in that, The fixing part (311) is a first sleeve, the adjusting part (312) is a sleeve rod, the sleeve rod is connected to the first sleeve, the sleeve rod can move along the axial direction of the first sleeve, and the sleeve rod is fixedly connected to the mounting plate (2).

4. The kitchen garbage sewage storage tank liquid level measuring device according to claim 1, characterized in that, The weighing mechanism (3) further includes a buffer limiting mechanism (34), which is connected below the weight sensor (32).

5. The kitchen garbage sewage storage tank liquid level measuring device according to claim 4, characterized in that, The buffer limiting mechanism (34) includes a base (340) and a second sleeve (341), a third sleeve (342), a spring (343), and a guide limiting assembly (344) arranged coaxially; The second sleeve (341) is connected to the base (340), the third sleeve (342) is slidably sleeved inside the second sleeve (341), the spring (343) abuts between the second sleeve (341) and the third sleeve (342), and the upper end of the third sleeve (342) is connected to the weight sensor (32). The guide limiting component (344) is disposed inside the third sleeve (342), the lower end of the guide limiting component (344) is connected to the base (340), and the upper end of the guide limiting component (344) is connected to the lower end of the weight sensor (32).

6. The kitchen garbage sewage storage tank liquid level measuring device according to claim 5, wherein The third sleeve (342) is equipped with a scale displacement indicator (345) and an extreme position warning line (346).

7. The kitchen garbage sewage storage tank liquid level measuring device according to claim 1, wherein The weighing mechanism (3) further includes a protective component (35), which includes a fourth sleeve (351) and a slider (352). The fourth sleeve (351) is a hollow structure with an open top. The slider (352) is slidably connected to the fourth sleeve (351). A sealing ring is provided between the outer wall of the slider (352) and the interior of the fourth sleeve (351). The slider (352) is located outside the fourth sleeve (351), and the portion outside the fourth sleeve (351) is connected to the lower end of the spherical hinge seat (33). The weight sensor (32) is located inside the fourth sleeve (351), and the weight sensor (32) is disposed on the bottom plate of the fourth sleeve (351). The weight sensor (32) is connected to the slider (352).

8. The kitchen waste sewage storage tank liquid level measuring device according to claim 7, characterized in that, The fourth sleeve (351) is filled with inert gas.

9. The kitchen garbage sewage storage tank liquid level measuring device according to claim 1, wherein, The liquid level measuring device for the kitchen waste sewage storage tank also includes a controller (4), and the weight sensor (32) is connected to the controller (4) by wires.

10. The kitchen garbage sewage storage tank liquid level measuring device according to claim 1, wherein, The top of the storage tank (1) is provided with a liquid injection port (11) and a liquid drain port. The liquid injection port (11) and the liquid drain port are detachably connected to the pipeline.

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