Waste oil detection system and intelligent kitchen waste oil recycling machine

Abstract

A waste oil detection system comprises an oil level probe, a water level probe and a comparison resistor. The oil level probe and the water level probe are inserted into waste water, the oil level probe, the waste water, the water level probe and the comparison resistor form a series detection circuit, and voltage detection branches are connected to the two sides of the comparison resistor in parallel. The design can identify and analyze the components of the wastewater by detecting and comparing the resistance voltage according to the principle that the resistance values of the components of the wastewater are different, so as to judge the state of an oil layer. The intelligent kitchen waste oil recycling machine comprises an oil-water separation box, a water inlet area, a buffer area and an oil extraction area are arranged in the oil-water separation box and are sequentially connected, and the waste oil detection system is arranged in the oil extraction area.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste kitchen oil recovery, and in particular relates to a waste oil detection system and an intelligent waste kitchen oil recovery machine with the waste oil detection system. Background Art

[0002] Waste cooking oil usually refers to the waste cooking oil generated in the food preparation process of the catering industry, including frying oil, cooking oil, etc. With the vigorous development of the catering industry, the amount of waste cooking oil has increased dramatically. If it is not handled properly, it will not only seriously pollute the environment and affect the urban drainage system, but may also be illegally refined and flow back into the dining table, posing a threat to public health.

[0003] There are two types of recycling machines currently used to recycle waste cooking oil. One is the traditional recycling machine, which is a small three-stage sedimentation tank in structure. It uses the principle that oil has a low density and will float in water, and uses a physical structure to make the oil layer float up, thereby achieving the purpose of recycling. However, this type of recycling machine can only help the oil layer float up, and often has problems such as oil overflow, and requires manual recycling, with low recycling efficiency and low purity of the recycled waste oil. Another type of recycling machine adds an electronic control system to the traditional recycling machine, using the non-conductive property of oil to identify the oil layer through the circuit, thereby driving the oil pump to work and recover the grease. Although this system can realize automatic oil recovery, the system has a low degree of intelligence. When there is a lot of foam in the oil layer, the system will misjudge. When there are many impurities in the oil layer, the system will also misjudge, resulting in uneven quality and low purity of the recycled grease.

[0004] Therefore, based on some of the above prior art situations, the present application has been further designed and improved. Utility Model Content

[0005] In order to solve the above technical problems, the utility model solves them through the following technical solutions.

[0006] A waste oil detection system includes an oil level probe, a water level probe and a comparison resistor. The oil level probe and the water level probe are inserted into wastewater, and the oil level probe, wastewater, the water level probe and the comparison resistor form a detection circuit connected in series. Voltage detection branches are connected in parallel on both sides of the comparison resistor. This design can use the principle that the resistance values ​​of various components of wastewater are different, and can identify and analyze the components of wastewater by detecting the voltage of the comparison resistor to determine the state of the oil layer.

[0007] Preferably, the voltage applied to both sides of the detection circuit is 5V. Such a voltage level can ensure the normal operation of the circuit while being within the safe voltage range, reducing electrical safety hazards, adapting to most conventional electronic components, and ensuring the stability and reliability of the system.

[0008] Preferably, the detection circuit is grounded, which prevents the circuit from being interfered with by external electromagnetic interference, reduces malfunctions, and protects the device from electrostatic damage, thereby extending its service life.

[0009] An intelligent kitchen waste oil recycling machine includes an oil-water separation box, wherein a water inlet area, a buffer area and an oil extraction area are arranged in the oil-water separation box, wherein the water inlet area, the buffer area and the oil extraction area are connected in sequence, and the above-mentioned waste oil detection system is arranged in the oil extraction area. An oil pump is also arranged on one side of the oil-water separation box, wherein the oil pump is connected to an oil outlet pipe, and the oil outlet pipe is connected to the oil extraction area. When the waste oil detection system determines that the oil layer below the probe is thick enough, the oil pump is started to extract the waste oil through the oil outlet.

[0010] Preferably, the water inlet of the oil extraction zone is located above the oil extraction zone, and the water outlet of the oil extraction zone is located below the oil extraction zone. This design is conducive to the flow of waste oil from the buffer zone to the oil extraction zone.

[0011] Preferably, a temperature sensing element and a heating element are provided in the oil extraction area. The temperature sensing element is used to monitor the liquid temperature in the oil extraction area in real time. When the temperature is lower than a preset value, the heating element is automatically started to ensure that the oil-water mixture is maintained within a suitable temperature range, so as to optimize the fluidity of the oil and the separation efficiency from water, and avoid the increase of oil viscosity due to too low temperature, which affects the extraction efficiency of the oil pump and the quality of the oil.

[0012] Compared with the prior art, the utility model has the following beneficial effects: by detecting and comparing the resistance voltage, the composition of the wastewater is identified and analyzed, the state of the oil layer is judged, the misoperation caused by foam or impurities is greatly reduced, and the accuracy and automation level of the recovery process are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the internal structure distribution diagram of the oil-water separation box.

[0014] Figure 2 This is a schematic diagram of the waste oil detection system.

[0015] The following is a description of the markings in the accompanying drawings of the specification:

[0016] 1. Water inlet area; 2. Buffer area; 3. Oil lifting area; 4. Oil level probe; 5. Water level probe; 6. Oil outlet pipe; 7. Temperature sensor; 8. Heating element. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations on the present invention.

[0019] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Reference Figure 1 and Figure 2 , an intelligent kitchen waste oil recycling machine, comprising an oil-water separation box, wherein the oil-water separation box is provided with a water inlet area 1, a buffer area 2 and an oil extraction area 3, wherein the water inlet area 1, the buffer area 2 and the oil extraction area 3 are connected in sequence, and a waste oil detection system is provided in the oil extraction area 3. An oil pump is also provided on one side of the oil-water separation box, wherein the oil pump is connected with an oil outlet pipe 6, and the oil outlet pipe 6 is connected to the oil extraction area 3. When the waste oil detection system determines that the oil layer below the probe is thick enough, the oil pump is started to extract the waste oil through the oil outlet.

[0021] The waste oil detection system detects waste oil by using resistance identification technology. Specifically, the waste oil detection system includes an oil level probe 4, a water level probe 5 and a comparison resistor. The oil level probe 4 and the water level probe 5 are inserted into waste water, and the oil level probe 4, waste water, the water level probe 5 and the comparison resistor form a detection circuit connected in series. Voltage detection branches are connected in parallel on both sides of the comparison resistor.

[0022] The utility model can indirectly reflect the thickness of the oil layer by detecting the voltage at both ends of the comparison resistor based on the resistance change of the oil-water mixture in the wastewater. When the oil layer accumulates to a certain thickness, the oil pump can be triggered to start the waste oil recovery, which greatly improves the timeliness of the oil pump operation and avoids unnecessary energy consumption.

[0023] The detection circuit is grounded to prevent the circuit from being interfered by external electromagnetic interference, reduce malfunctions, and protect the equipment from electrostatic damage and extend its service life. The voltage applied to both sides of the detection circuit is 5V. This voltage level can ensure the normal operation of the circuit and is within the safe voltage range, reducing electrical safety hazards, adapting to most conventional electronic components, and ensuring the stability and reliability of the system.

[0024] For ease of understanding, let the circuit including the oil level probe 4, wastewater, and water level probe 5 be circuit A, and the circuit including the comparison resistor be circuit B, and the resistance value of the comparison resistor is close to the resistance of the waste oil mixture. When the resistance of circuit A is close to zero, the voltage across circuit A is also close to zero. At this time, the voltage across circuit B is close to 5V. When the resistance of circuit A is infinite, the voltage across circuit A is close to 5V, and the voltage across circuit B is close to 0. When the resistance of the wastewater between the oil level probe 4 and the water level probe 5 is close to the comparison resistor, the voltage across circuit A is close to the voltage across circuit B, both of which are about 2.5 volts. This means that the oil layer under the probe is thick enough to meet the oil pump start-up conditions. The oil pump starts to extract the waste oil from the oil extraction area 3.

[0025] It should be noted that the above is only an example of the waste oil detection system described in the utility model. Users can adjust parameters to detect water bodies of different properties, thereby accurately adapting to the diverse identification needs of wastewater components in different regions and different eating habits, thereby enhancing the breadth and practicality of the application of this application.

[0026] In order to ensure the recovery efficiency and recovery effect, the water inlet of the oil extraction area 3 is located above the oil extraction area 3, and the water outlet of the oil extraction area 3 is located below the oil extraction area 3. This design is conducive to the flow of waste oil from the buffer zone 2 to the oil extraction area 3. The oil extraction area 3 is provided with a temperature sensor 7 and a heating element 8. The temperature sensor 7 is used to monitor the liquid temperature in the oil extraction area 3 in real time. When the temperature is lower than the preset value, the heating element 8 is automatically started to ensure that the oil-water mixture is kept within a suitable temperature range, so as to optimize the fluidity of the oil and the separation efficiency from the water, and avoid the increase of the viscosity of the oil due to too low temperature, which affects the extraction efficiency of the oil pump and the quality of the oil.

[0027] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A waste oil detection system, characterized in that: The invention comprises an oil level probe (4), a water level probe (5) and a comparison resistor; the oil level probe (4) and the water level probe (5) are inserted into wastewater, and the oil level probe (4), wastewater, the water level probe (5) and the comparison resistor form a detection circuit connected in series; and voltage detection branches are connected in parallel on both sides of the comparison resistor.

2. A waste oil detection system according to claim 1, characterized in that: The voltage applied across the detection circuit is 5V.

3. A waste oil detection system according to claim 1, characterized in that: The detection circuit is grounded.

4. An intelligent kitchen waste oil recycling machine, characterized in that: The invention comprises an oil-water separation box, wherein a water inlet area (1), a buffer area (2) and an oil extraction area (3) are arranged in the oil-water separation box, wherein the water inlet area (1), the buffer area (2) and the oil extraction area (3) are connected in sequence, wherein a waste oil detection system according to any one of claims 1 to 3 is arranged in the oil extraction area (3), wherein an oil pump is further arranged on one side of the oil-water separation box, wherein the oil pump is connected to an oil outlet pipe (6), and wherein the oil outlet pipe (6) is connected to the oil extraction area (3).

5. The intelligent kitchen waste oil recycling machine according to claim 4, characterized in that: The water inlet of the oil extraction zone (3) is located above the oil extraction zone (3), and the water outlet of the oil extraction zone (3) is located below the oil extraction zone (3).

6. The intelligent kitchen waste oil recycling machine according to claim 4, characterized in that: The oil extraction area (3) is provided with a temperature sensing element (7) and a heating element (8).

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