Grease heating system and control method thereof

Abstract

The invention provides a grease heating system and a control method thereof.The grease heating system comprises a heating box, an upper heating coil and a lower heating coil are arranged at the bottom of the heating box, the upper heating coil is located at the top of the lower heating coil, and a grease collecting barrel internally collecting solid grease is inversely arranged on the top of the upper heating coil on the inner side of the heating box (1); the grease storage barrel is arranged at the position of the lower heating coil to collect liquid grease formed after solid grease is heated, a hot water tank communicated with the upper heating coil is further arranged in the heating box body, and the lower heating coil is communicated with an external softened water tank after passing through the position where the hot water tank is located in an on-off mode. A water temperature sensor is arranged in the hot water tank, an air temperature sensor is arranged in the heating box body, and the lower heating coil is correspondingly controlled according to real-time detection results of the water temperature sensor and the air temperature sensor; the problem that the solid grease difficult to melt is difficult to pour out after being solidified and cannot be processed in the next step is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen waste treatment technology, and in particular to a grease heating system and a control method thereof. Background Art

[0002] As the amount of kitchen waste increases, whether it can be properly disposed of will directly affect food hygiene and safety and the health of the people; at the same time, with the rapid development of urban sewage treatment in my country, the amount of sludge generated is increasing. At present, the commonly used method in the prior art is the coordinated treatment method of kitchen waste and sewage treatment plant sludge. This method can not only stably treat kitchen waste and domestic sludge, make them harmless and reduce their amount, but also produce usable biogas and garden biocarbon soil, turning waste into treasure.

[0003] As waste in the catering service link, kitchen waste has complex ingredients and is extremely easy to rot and deteriorate. It also contains highly contagious pathogens such as Salmonella, Shigella, Staphylococcus aureus, and Mycobacterium tuberculosis, as well as toxic and harmful ingredients such as enterotoxins, aflatoxin, kojic acid, and nitrite. Waste oil illegally extracted from kitchen waste contains a large amount of carcinogens, among which the highly toxic aflatoxin is the strongest chemical carcinogen discovered so far. Food processed and produced using waste oil contains a large amount of these substances that are harmful to the human body, which is extremely harmful to the human body.

[0004] Among the recycled grease, hot pot grease is more difficult to handle. The melting point of hot pot oil is generally around 40-50℃. This is because hot pot oil is mainly made of butter, and the melting point of butter is usually around 40℃. The main component of butter is fat, most of which are saturated fatty acids and unsaturated fatty acids. Most saturated fatty acids are solid and have a melting point above 50℃. After these components are mixed together, at room temperature, the hot pot grease is solid and difficult to melt. This causes the grease to solidify into a solid state after being poured into the oil barrel and transported to the food processing plant by the processing company, making it difficult to pour it out from the grease collection barrel smoothly, thus affecting the normal progress of the next recycling operation.

[0005] Therefore, there is an urgent need to provide a grease heating system and a control method thereof to solve the defects and shortcomings in the above-mentioned prior art. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a grease heating system and a control method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A grease heating system comprises a heating box, characterized in that an upper heating coil and a lower heating coil are respectively arranged at the inner bottom of the heating box, the upper heating coil is located on the top of the lower heating coil, a grease collecting barrel with solid grease collected inside is inverted on the top of the upper heating coil inside the heating box, a grease storage barrel is arranged at the position of the lower heating coil to collect liquid grease formed after the solid grease is heated, a hot water tank connected to the upper heating coil is also arranged inside the heating box, the lower heating coil is connected to an external soft water tank after passing through the position of the hot water tank in a switchable manner, a water temperature sensor is arranged inside the hot water tank, an air temperature sensor is arranged inside the heating box, and the lower heating coil is controlled accordingly according to the real-time detection results of the water temperature sensor and the air temperature sensor.

[0008] As a further preferred embodiment of the present invention, the heating box is made of corrosion-resistant carbon steel material, and the upper heating coil and the lower heating coil are made of SS304 material.

[0009] As a further preferred embodiment of the present invention, hot water is passed into the upper heating coil, and steam is passed into the lower heating coil.

[0010] As a further preferred embodiment of the present invention, a lighting lamp is arranged inside the heating box, and the lighting lamp is made of highly sealed and high temperature resistant material.

[0011] As a further preferred embodiment of the present invention, the grease storage barrel is provided with an overflow port and an emptying port, the overflow port is a normally open overflow port, a corresponding control valve is provided at the emptying port to open and close it, and a detachable and washable filter is provided at the overflow port and the emptying port.

[0012] As a further preferred embodiment of the present invention, a barrel cover collection box is provided inside the heating box.

[0013] As a further preferred embodiment of the present invention, the lower heating coil passes through the heat exchanger, circles around the location of the hot water tank, and then communicates with the external soft water tank.

[0014] As a further preferred embodiment of the present invention, a steam direct injection device is provided at the inner bottom of the heating box body, the inlet end of the steam direct injection device is connected to the lower heating coil, and the outlet end of the steam direct injection device is connected to the inside of the grease collection barrel at the upper heating coil position through a steam direct injection pipe.

[0015] As a further preferred embodiment of the present invention, after the heating system is started, the water temperature sensor and the air temperature sensor start working synchronously: When the water temperature sensor detects that the real-time temperature of the hot water tank reaches the preset water temperature threshold, the connecting path of the lower heating coil passing through the location of the hot water tank is disconnected; When the air temperature sensor detects that the real-time temperature inside the heating box reaches the preset temperature threshold, the steam is stopped from being supplied to the interior of the downward heating coil.

[0016] Furthermore, the present invention also provides a control method for a grease heating system, characterized in that it comprises the following steps: S1: transport the grease collection barrel with solid grease to the inner top of the heating system, remove the barrel cover, arrange the barrels neatly, and invert the barrel body to the top of the heating coil on the inner side of the heating system, and transport the empty grease collection barrel to the inner bottom of the heating system; S2: Start the grease heating system; S3: Steam is introduced into the downward heating coil. The steam preheats the air inside the system and heats the falling solid grease. The steam then heats the hot water in the hot water tank through the heat exchanger and finally returns to the external soft water tank to achieve the recycling of steam. S4: hot water is introduced into the upward heating coil, and after the hot water heats the grease collection barrel and the solid grease inside, it returns to the hot water tank to realize the recycling of hot water; S5: After the air temperature inside the grease heating system rises, the solid grease near the barrel wall in the grease collection barrel melts first, and falls to the barrel mouth under the action of gravity, directly contacts the upper heating coil, and further melts into liquid or small particles of solid grease, and then falls to the lower heating coil to continue heating and melting, and finally flows into the grease storage barrel for storage; S6: After the heating system is started, the water temperature sensor and the air temperature sensor start working synchronously: when the water temperature sensor detects that the real-time temperature of the hot water tank reaches the preset water temperature threshold, the connection path of the lower heating coil passing through the location of the hot water tank is disconnected; when the air temperature sensor detects that the real-time temperature inside the heating box reaches the preset air temperature threshold, the steam is stopped from entering the lower heating coil; S7: After the bottom grease storage barrel is full of liquid grease, the bottom grease storage barrel inside the system is promptly transported away, and the emptied grease collection barrel at the top inside the system is recycled.

[0017] Compared with the prior art, the advantages and positive effects achieved by the present invention are: 1) The present invention provides a grease heating system and a control method thereof, wherein an upper heating coil and a lower heating coil are respectively arranged at the top and the bottom of a heating box body, so that solid grease is heated by high-temperature steam and hot water respectively to promote its melting, thereby effectively solving the problem that solid hard-to-melt grease is difficult to pour out after solidification and cannot be processed in the next step.

[0018] 2) The present invention provides a grease heating system and a control method thereof, wherein steam is introduced into the downward heating coil, and the steam preheats the air inside the system while heating the falling solid grease, and then heats the hot water in the hot water tank after passing through a heat exchanger, and finally returns to the external soft water tank, thereby realizing the recycling of the steam; hot water is introduced into the upward heating coil, and the hot water heats the grease collection barrel and the solid grease inside it and then returns to the hot water tank, thereby realizing the recycling of the hot water; thus, through the recycling of steam and hot water, resources are saved and environmental protection is achieved.

[0019] 3) The present invention provides a grease heating system and a control method thereof, wherein a steam direct injection device is arranged at the inner bottom of a heating box body, the inlet end of the steam direct injection device is connected to the lower heating coil, and the outlet end of the steam direct injection device is connected to the inside of a grease collecting barrel at the position of the upper heating coil through a steam direct injection pipeline, so that high-temperature steam can be directly sent into the grease collecting barrel, thereby further improving the heating and melting efficiency of solid grease.

[0020] 4) The present invention provides a grease heating system and a control method thereof. When the water temperature sensor detects that the real-time temperature of the hot water tank reaches a preset water temperature threshold, the connecting path of the lower heating coil passing through the location of the hot water tank is disconnected, thereby stopping the heating of the low-temperature hot water in the hot water tank; when the air temperature sensor detects that the real-time temperature inside the heating box reaches a preset air temperature threshold, the steam is stopped from being introduced into the lower heating coil to stop heating the heating system, thereby achieving the melting of solid grease into liquid grease while preventing the melting deformation that may be caused by the contact between the plastic grease collection barrel and the upper heating coil, and the contact between the grease storage barrel and the lower heating coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the system structure of the present invention.

[0022] Figure 2 It is a side view of the system structure of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] [First embodiment] like Figure 1-2 The figure shows a grease heating system provided by the first embodiment of the present invention, including a heating box 1. For long-term use, the heating box 1 is preferably made of anti-corrosion carbon steel material. While ensuring that the box is strong and heat-resistant, it can accommodate solid and liquid grease inside for a long time. As one of the preferred embodiments, the heating box 1 can be preferably set in the form of a drying room, and a heat-insulating material is set inside the drying room; a lighting lamp is set inside the heating box 1, and the lighting lamp is made of high-sealing and high-temperature resistant materials. The lighting lamp is convenient for the staff to transport and invert the grease collection barrel 3 inside the heating box and transport the grease storage barrel 4. A barrel cover collection box is set inside the heating box 1 to collect the barrel covers of the inverted grease collection barrel 3 accordingly.

[0027] An upper heating coil 21 and a lower heating coil 22 are provided at the inner bottom of the heating box 1, and the upper heating coil 21 is located on the top of the lower heating coil 22. Preferably, the upper heating coil 21 and the lower heating coil 22 in this embodiment are preferably made of SS304 material, which has good thermal conductivity while having anti-rust and anti-corrosion properties. In this embodiment, hot water is passed into the upper heating coil 21, and steam is passed into the lower heating coil 22, so that the solid grease is heated by high-temperature steam and hot water respectively to promote its melting, thereby effectively solving the problem that the solid hard-to-melt grease is difficult to pour out after solidification and cannot be processed in the next step.

[0028] The grease collecting barrel 3 with solid grease collected inside is inverted on the top of the heating coil on the inner side of the heating box 1 after the barrel cover is removed. The grease storage barrel 4 with the internal evacuation is arranged at the position of the lower heating coil 22 to collect the liquid grease formed after the solid grease is heated. Correspondingly, corresponding support and mounting frames are respectively arranged on the inner top of the heating box 1 and inside the lower heating coil 22, so as to fix and support the grease collecting barrel 3 at the top of the heating coil on the inner side of the heating box 1, and fix and support the grease storage barrel 4 at the inner position of the lower heating coil 22. The grease storage barrel 4 is provided with an overflow port and an emptying port. The overflow port is a normally open overflow port, and a corresponding control valve is provided at the emptying port to open and close it. Through the overflow port, after the current grease storage barrel 4 is full of liquid grease, the overflowed liquid grease can be timely overflowed to other grease storage barrels 4, and the emptying port can be opened and emptied when needed (for example, when discharging the internal liquid grease); detachable and washable filter nets are provided at the overflow port and the emptying port to intercept large particle impurities and solid grease inside the liquid grease.

[0029] The heating box 1 is also provided with a hot water tank 5 connected to the upper heating coil 21. The lower heating coil 22 is connected to the external soft water tank after passing through the location of the hot water tank 5 in a switchable manner. Specifically, the lower heating coil 22 passes through the heat exchanger, circles around the location of the hot water tank 5, and then connects to the external soft water tank. This arrangement allows: by passing steam into the lower heating coil, the steam heats the falling solid grease while preheating the air inside the system, and then heats the hot water in the hot water tank after passing through the heat exchanger, and finally returns to the external soft water tank, thereby realizing the recycling of steam; correspondingly, by passing hot water into the upper heating coil, the hot water returns to the hot water tank after heating the grease collection barrel and the solid grease inside, and then is reheated by steam to realize the recycling of hot water; thus, through the recycling of steam and hot water, resources are saved and green environmental protection is achieved.

[0030] As a preference, Figure 1 As shown, a steam direct injection device 6 is provided at the inner bottom of the heating box body 1, and the inlet end of the steam direct injection device 6 is connected to the lower heating coil 22, and the outlet end of the steam direct injection device 6 is connected to the inside of the grease collecting barrel 3 at the position of the upper heating coil 21 through a steam direct injection pipe 61, so that high-temperature steam can be directly delivered to the inside of the grease collecting barrel, thereby further improving the heating and melting efficiency of the solid grease.

[0031] That is, in this embodiment, the steam introduced into the interior of the downward heating coil can at least play the following roles: 1) preheat the air inside the system through steam; 2) heat the solid grease that has not yet melted and has fallen to the position of the lower heating coil; 3) heat the hot water in the hot water tank after passing through the heat exchanger; 4) pass through the steam direct injection device 6 and the steam direct injection pipe 61 to directly send it to the grease collection barrel 3 at the position of the upper heating coil 21.

[0032] A water temperature sensor is provided inside the hot water tank 5, and an air temperature sensor is provided inside the heating box 1. The lower heating coil 22 is controlled accordingly according to the real-time detection results of the water temperature sensor and the air temperature sensor. The specific control steps include: After the heating system is started, the water temperature sensor and air temperature sensor start working synchronously: When the water temperature sensor detects that the real-time temperature of the hot water tank reaches the preset water temperature threshold, the communication path of the lower heating coil 22 passing through the location of the hot water tank 5 is disconnected, thereby stopping the heating of the low-temperature hot water in the hot water tank; When the temperature sensor detects that the real-time temperature inside the heating box reaches the preset temperature threshold, the steam is stopped from entering the downward heating coil 22, and the steam is stopped from entering the downward heating coil; In this embodiment, the preset water temperature threshold and the preset air temperature threshold are generally not more than 70°C. This is because the grease collection barrel 3 and the grease storage barrel 4 are generally made of plastic material, and the melting point of the plastic is around 70°C. This setting can ensure that the water temperature of the hot water tank and the air temperature inside the heating box are always lower than this temperature, thereby effectively preventing the melting and deformation that may be caused by the contact between the plastic grease collection barrel and the upper heating coil, and the grease storage barrel and the lower heating coil.

[0033] [Second embodiment] The second embodiment of the present invention further provides a control method of the grease heating system mentioned in the first embodiment, comprising the following steps: S1: transport the grease collection barrel with solid grease to the inner top of the heating system, remove the barrel cover, arrange the barrels neatly, and invert the barrel body to the top of the heating coil on the inner side of the heating system, and transport the empty grease collection barrel to the inner bottom of the heating system; S2: Start the grease heating system; S3: Steam is introduced into the downward heating coil. The steam preheats the air inside the system and heats the falling solid grease. The steam then heats the hot water in the hot water tank through the heat exchanger and finally returns to the external soft water tank to achieve the recycling of steam. S4: hot water is introduced into the upward heating coil, and after the hot water heats the grease collection barrel and the solid grease inside, it returns to the hot water tank to realize the recycling of hot water; S5: After the air temperature inside the grease heating system rises, the solid grease near the barrel wall in the grease collection barrel melts first, and falls to the barrel mouth under the action of gravity, directly contacts the upper heating coil, and further melts into liquid or small particles of solid grease, and then falls to the lower heating coil to continue heating and melting, and finally flows into the grease storage barrel for storage; S6: After the heating system is started, the water temperature sensor and the air temperature sensor start working synchronously: when the water temperature sensor detects that the real-time temperature of the hot water tank reaches the preset water temperature threshold, the connection path of the lower heating coil passing through the location of the hot water tank is disconnected; when the air temperature sensor detects that the real-time temperature inside the heating box reaches the preset air temperature threshold, the steam is stopped from entering the lower heating coil; S7: After the bottom grease storage barrel is full of liquid grease, the bottom grease storage barrel inside the system is promptly transported away, and the emptied grease collection barrel at the top inside the system is recycled.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A grease heating system, comprising a heating box (1), characterized in that: An upper heating coil (21) and a lower heating coil (22) are respectively arranged at the bottom of the inner side of the heating box (1); the upper heating coil (21) is located on the top of the lower heating coil (22); a grease collection bucket (3) containing solid grease is inverted on the top of the upper heating coil inside the heating box (1); a grease storage bucket (4) is arranged at the position of the lower heating coil (22) to collect liquid grease formed after the solid grease is heated; a hot water tank (5) connected to the upper heating coil (21) is also arranged inside the heating box (1); the lower heating coil (22) is connected to an external soft water tank in a switchable manner after passing through the position of the hot water tank (5); a water temperature sensor is arranged inside the hot water tank (5); an air temperature sensor is arranged inside the heating box (1); and the lower heating coil (22) is controlled accordingly according to the real-time detection results of the water temperature sensor and the air temperature sensor.

2. A grease heating system according to claim 1, characterized in that: The heating box (1) is made of corrosion-resistant carbon steel material, and the upper heating coil (21) and the lower heating coil (22) are made of SS304 material.

3. A grease heating system according to claim 1, characterized in that: Hot water is passed into the upper heating coil (21), and steam is passed into the lower heating coil (22).

4. A grease heating system according to claim 1, characterized in that: An illumination lamp is arranged inside the heating box (1), and the illumination lamp is made of a highly sealed and high temperature resistant material.

5. A grease heating system according to claim 1, characterized in that: The grease storage barrel (4) is provided with an overflow port and an emptying port, the overflow port is a normally open overflow port, a corresponding control valve is provided at the emptying port to open and close the overflow port, and a detachable and washable filter screen is provided at the overflow port and the emptying port.

6. A grease heating system according to claim 1, characterized in that: A barrel cover collecting box is arranged inside the heating box (1).

7. A grease heating system according to claim 1, characterized in that: The lower heating coil (22) passes through the heat exchanger, circles around the location of the hot water tank (5), and is then connected to the external soft water tank.

8. A grease heating system according to claim 1, characterized in that: A steam direct injection device (6) is provided at the bottom of the inner side of the heating box (1); the inlet end of the steam direct injection device (6) is connected to the lower heating coil (22); and the outlet end of the steam direct injection device (6) is connected to the inside of the grease collection barrel (3) at the position of the upper heating coil (21) via a steam direct injection pipeline (61).

9. A grease heating system according to claim 1, characterized in that: After the heating system is started, the water temperature sensor and the air temperature sensor start working synchronously: When the water temperature sensor detects that the real-time temperature of the hot water tank reaches a preset water temperature threshold, disconnecting the communication path of the lower heating coil (22) passing through the location of the hot water tank (5); When the air temperature sensor detects that the real-time temperature inside the heating box has reached a preset air temperature threshold, the steam is stopped from being passed into the downward heating coil (22).

10. A control method for a grease heating system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: transport the grease collection barrel with solid grease to the inner top of the heating system, remove the barrel cover, arrange the barrels neatly, and invert the barrel body to the top of the heating coil on the inner side of the heating system, and transport the empty grease collection barrel to the inner bottom of the heating system; S2: Start the grease heating system; S3: Steam is introduced into the downward heating coil. The steam preheats the air inside the system and heats the falling solid grease. The steam then heats the hot water in the hot water tank through the heat exchanger and finally returns to the external soft water tank to achieve the recycling of steam. S4: hot water is introduced into the upward heating coil, and after the hot water heats the grease collection barrel and the solid grease inside, it returns to the hot water tank to realize the recycling of hot water; S5: After the air temperature inside the grease heating system rises, the solid grease near the barrel wall in the grease collection barrel melts first, and falls to the barrel mouth under the action of gravity, directly contacts the upper heating coil, and further melts into liquid or small particles of solid grease, and then falls to the lower heating coil to continue heating and melting, and finally flows into the grease storage barrel for storage; S6: After the heating system is started, the water temperature sensor and the air temperature sensor start working synchronously: when the water temperature sensor detects that the real-time temperature of the hot water tank reaches the preset water temperature threshold, the connection path of the lower heating coil passing through the location of the hot water tank is disconnected; when the air temperature sensor detects that the real-time temperature inside the heating box reaches the preset air temperature threshold, the steam is stopped from entering the lower heating coil; S7: After the bottom grease storage barrel is full of liquid grease, the bottom grease storage barrel inside the system is promptly transported away, and the emptied grease collection barrel at the top inside the system is recycled.

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