Oil extraction device for urban kitchen waste

Abstract

The utility model discloses a grease extraction device for city kitchen garbage relates to kitchen garbage processing technical field, and the utility model discloses a box, the upper portion of box is equipped with extraction mechanism, is used for the oil in kitchen garbage to advance, and extraction mechanism includes: extrusion subassembly, including fixed mounting conveying cylinder in the top one side of box, and conveying cylinder is inclined to set, and the middle portion rotation of conveying cylinder is installed with spiral conveying blade, and the application can suck the oil -water mixture of kitchen garbage big block impurity in its through the synchronous and relative rotation of the drive motor drive two mill roller, and make it pass the sieve hole and enter the oil -water separation treatment in the box, and can drive spiral conveying blade rotation to the big block impurity after extruding through the one side conveying of conveying cylinder and make it with oil -water mixture mutual separation to the drive of servo motor, thereby greatly improved the separation efficiency and equipment operation stability of pretreatment stage.

Description

Technical Field

[0001] This utility model relates to the field of kitchen waste treatment technology, specifically to an oil extraction device for urban kitchen waste. Background Technology

[0002] Kitchen waste refers to easily perishable waste containing organic matter generated in daily life. It usually comes from food processing, catering activities, or family kitchens. Kitchen waste accounts for 30%-60% of the total amount of household waste. Effective sorting can reduce methane emissions from landfills, reduce environmental pollution, and promote resource recycling. If not effectively treated, kitchen waste is easily illegally collected for refining "gutter oil" and returning it to the dining table, or used as feed for livestock and poultry, which seriously threatens food safety and public health.

[0003] Referring to the patent document: Patent Publication No. CN220201869U, Patent Publication Date 2023-12-19, a device for extracting oil from kitchen waste is disclosed, including a main body and a distillation separation mechanism. The distillation separation mechanism is located at the lower end of the main body. The main body includes a storage box, a movable shaft, a movable door, and a door handle. The movable shaft is movably installed below the right end of the storage box, the movable door is movably installed at the right end of the movable shaft, and the door handle is fixedly installed at the outer end of the right end of the movable door. The main body also includes a centrifugal oil removal component, a drain pipe, an electromagnetic control valve, and an integrated controller. The centrifugal oil removal component is fixedly installed at the upper end of the storage box. This device for extracting oil from kitchen waste, through the use of the centrifugal oil removal component, allows the oil-water mixture to undergo centrifugal oil removal before distillation, causing all the oil to float on the water surface, making subsequent oil collection and extraction more convenient.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Currently, in the extraction and processing of grease from food waste, some devices fail to effectively separate large impurities from the oil-water mixture during the pretreatment stage because the food waste absorbs a large amount of oil-water mixture. This leads to equipment blockage during subsequent processing or the oil-water mixture being discharged along with the large impurities, failing to achieve effective treatment of food waste and thus affecting overall processing efficiency and equipment lifespan. In the oil-water separation stage, some devices have poor separation effects, making it difficult to continuously and efficiently extract grease from the separated oil-water mixture, resulting in slow extraction efficiency. At the same time, most existing devices adopt a split design, with poor connection between the pretreatment and separation stages, requiring manual intervention to clean sludge or adjust parameters.

[0006] Therefore, this utility model provides an oil extraction device for urban kitchen waste. Utility Model Content

[0007] To address the problems of ineffective separation of large impurities and oil-water mixtures during the pretreatment stage of food waste grease extraction devices, which easily leads to equipment blockage and slow extraction efficiency in the oil-water separation stage, as well as poor connection between the pretreatment and separation stages due to the device's split design, the purpose of this utility model is to provide an grease extraction device for urban food waste.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an oil extraction device for urban kitchen waste, comprising a housing, wherein the upper part of the housing is provided with an extraction mechanism for pre-extracting oil from the kitchen waste; the extraction mechanism includes:

[0009] The extrusion assembly includes a conveying cylinder fixedly installed on one side of the top of the housing. The conveying cylinder is inclined. A spiral conveying blade is rotatably installed in the middle of the conveying cylinder. A servo motor is fixedly installed on one side of the conveying cylinder. One end of the spiral conveying blade is fixedly installed on the drive end of the servo motor. Multiple screening holes are opened in the lower part of the conveying cylinder. A separation box is fixedly installed at the top of the conveying cylinder. Two symmetrically distributed rolling rollers are fixedly installed in the middle of the separation box. A transmission component is provided at one end of the two rolling rollers, and a drive component is provided at the other end of one of the rolling rollers.

[0010] The separation component, located in the middle of the housing, is used for oil-water separation.

[0011] Preferably, the separation assembly includes multiple equally spaced steam pipes fixedly installed on one side of the upper part of the box, an inclined plate fixedly installed on the upper part of the box, and a steel belt oil skimmer installed in the middle of the box.

[0012] Preferably, the drive assembly includes a drive motor fixedly mounted on one side of the upper part of the separation box, and one end of one of the crushing rollers is fixedly mounted on the drive end of the drive motor.

[0013] Preferably, the transmission assembly includes a gear fixedly mounted on one end of the rolling roller, and the two gears are meshed together.

[0014] Preferably, a receiving hopper is fixedly installed at the top center of the box body, and a feeding box is fixedly installed at the top of the separation box.

[0015] Preferably, a drain pipe is fixedly installed on one side of the lower part of the box, and a drain outlet is opened on one side of the upper part of the box.

[0016] Beneficial effects

[0017] This invention provides an oil extraction device for urban kitchen waste. Compared with the prior art, it has the following advantages:

[0018] 1. This application uses a drive motor to drive two rollers to rotate synchronously and relative to each other, which can squeeze out the oil-water mixture sucked into the large impurities of the kitchen waste, so that it enters the box through the screening hole for oil-water separation treatment. At the same time, the servo motor drives the spiral conveyor blade to rotate and transport the squeezed large impurities out through one side of the conveyor cylinder, so that they are separated from the oil-water mixture, thereby greatly improving the separation efficiency and equipment operation stability in the pretreatment stage.

[0019] 2. This application continuously injects steam into the oil-water mixture through a steam pipe, which reduces the viscosity of the grease and promotes the separation of oil and water. After the grease floats to the top due to the density difference between oil and water, it is scraped off by a steel belt scraper to achieve the purpose of grease extraction. The clear water at the bottom can be discharged through the drain outlet, thus achieving the effect of continuous separation and reducing the post-processing time of fast food kitchen waste. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 3 This is a schematic cross-sectional view of the extrusion assembly of this utility model.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the box body of this utility model.

[0024] In the diagram: 1. Box body; 2. Extraction mechanism; 21. Extrusion assembly; 211. Separation box; 212. Feed box; 213. Roller; 214. Gear; 215. Drive motor; 216. Spiral conveyor blade; 217. Servo motor; 218. Conveying cylinder; 219. Screening hole; 22. Separation assembly; 221. Inclined plate; 222. Steam pipe; 223. Drain pipe; 224. Drain outlet; 225. Receiving hopper; 3. Steel belt scraper. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4This utility model provides a technical solution: an oil extraction device for urban kitchen waste, including a housing 1, with an extraction mechanism 2 on the upper part of the housing 1 for pre-extracting oil from the kitchen waste. The extraction mechanism 2 includes:

[0027] The extrusion assembly 21 includes a conveying cylinder 218 fixedly installed on one side of the top of the housing 1. The conveying cylinder 218 is inclined at an angle of 15 degrees. This angle ensures that large pieces of kitchen waste are discharged under the action of gravity and the spiral conveying blade 216, while preventing wastewater from sliding out from one side of the conveying cylinder 218 due to an excessively large inclination angle. The spiral conveying blade 216 is rotatably installed in the middle of the conveying cylinder 218. A servo motor 217 is fixedly installed on one side of the conveying cylinder 218. The servo motor 217 is equipped with a frequency converter, which can adjust the speed of the spiral conveying blade 216 in real time according to the type and processing volume of kitchen waste. One end of the spiral conveying blade 216 is fixedly installed on the servo motor. At the drive end of 217, the lower part of the conveying cylinder 218 is provided with multiple screening holes 219. The diameter of the screening holes 219 is 5mm. This diameter can effectively intercept large solid impurities, while ensuring that the oil-water mixture can pass smoothly into the box 1. A separation box 211 is fixedly installed at the top of the conveying cylinder 218. Two symmetrically distributed crushing rollers 213 are fixedly installed in the middle of the separation box 211. Both crushing rollers 213 are rubber rollers with strong corrosion resistance, which can avoid hard contact with kitchen waste, causing large impurities to break and block the screening holes 219 after crushing. One end of the two crushing rollers 213 is provided with a transmission component, and the other end of one of the crushing rollers 213 is provided with a drive component.

[0028] Separation component 22 is located in the middle of housing 1 and is used for oil-water separation.

[0029] The separation component 22 includes multiple steam pipes 222 that are evenly spaced and fixedly installed on one side of the upper part of the box 1. An inclined plate 221 is fixedly installed on the upper part of the box 1. A steel belt oil scraper 3 is installed in the middle of the box 1. The steel belt oil scraper 3 is of model DN-50T and can use a specially treated oleophilic and hydrophobic annular stainless steel belt to absorb grease when driven by a drive device. When it rises, the water drips off due to its hydrophobicity. When the steel belt passes the oil scraper, the grease is scraped off into the oil collection tank.

[0030] The drive assembly includes a drive motor 215 fixedly mounted on one side of the upper part of the separator 211. One end of a rolling roller 213 is fixedly mounted on the drive end of the drive motor 215. The drive motor 215 is a YE3 three-phase asynchronous motor with a large torque, model YE3-100L1-4-2.2KW, which has waterproof and dustproof functions and can provide stable and strong power to the rolling roller 213.

[0031] The transmission assembly includes a gear 214 fixedly installed at one end of the crushing roller 213. The two gears 214 are meshed with each other and driven by the drive motor 215 to rotate one of the crushing rollers 213, which in turn drives the gear 214 to rotate. With the two gears 214 meshing with each other, the two crushing rollers 213 can rotate relative to each other and synchronously, which can squeeze the kitchen waste that enters the separation box 211 and squeeze out the oil and water mixture in the impurities.

[0032] A receiving hopper 225 is fixedly installed at the top center of the housing 1. The receiving hopper 225 is funnel-shaped with a smooth inner wall that gradually narrows downwards. It can receive the grease when the steel belt scraper 3 is working. When the grease on the steel belt falls downwards, it will fall into the receiving hopper 225 and flow back into the housing 1, preventing the grease from falling out of the housing 1. A feeding box 212 is fixedly installed at the top of the separating box 211.

[0033] A drain pipe 223 is fixedly installed on the lower side of the box 1. When the extraction mechanism 2 is not working, the drain valve of the drain pipe 223 can be opened to drain the water inside the box 1. A drain outlet 224 is provided on the upper side of the box 1. When the extraction mechanism 2 is working, the water inside the box 1 is discharged and collected through the drain outlet 224.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, food waste is placed into the feed box 212, and the drive motor 215 is started to drive one of the crushing rollers 213 to rotate. Under the mutual meshing transmission of the gears 214, the two crushing rollers 213 rotate synchronously and relative to each other, thereby squeezing the food waste passing between the two crushing rollers 213, squeezing out the oil and water in the food waste, and letting it fall into the box 1 through the screening hole 219. The large pieces of food waste after squeezing are driven by the servo motor 217 to rotate the spiral conveyor blade 216, which can transport the waste out from one side of the conveyor cylinder 218, so as to achieve the separation between large impurities and oil and water in the food waste.

[0036] The steam pipe 222 is then connected to the steam generator, and steam is introduced into the steam pipe 222 to heat the oil-water mixture, increase the temperature of the oil-water mixture, reduce the viscosity of the grease, and accelerate the separation of oil and water. Due to the density difference, the grease moves upward and is guided by the inclined plate 221 to the middle opening of the tank 1. A steel belt oil scraper 3 is installed here. Using a specially treated oleophilic and hydrophobic annular stainless steel belt, it is driven by the drive device to immerse in the oil-containing water to absorb the grease. When it rises, the water drips due to the hydrophobicity. When the steel belt passes the oil scraper, the grease is scraped off to the oil collection tank. The grease floating on the upper layer is scraped off, while the clear water at the bottom is discharged through the drain port 224 on the other side of the upper part of the tank 1, thus completing the oil-water separation process.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil extraction device for urban kitchen waste, comprising a housing (1), characterized in that: The upper part of the box (1) is provided with an extraction mechanism (2) for pre-extracting grease from kitchen waste. The extraction mechanism (2) includes: The extrusion assembly (21) includes a conveying cylinder (218) fixedly installed on one side of the top of the housing (1). The conveying cylinder (218) is inclined. A spiral conveying blade (216) is rotatably installed in the middle of the conveying cylinder (218). A servo motor (217) is fixedly installed on one side of the conveying cylinder (218). One end of the spiral conveying blade (216) is fixedly installed on the drive end of the servo motor (217). Multiple screening holes (219) are opened in the lower part of the conveying cylinder (218). A separation box (211) is fixedly installed at the top of the conveying cylinder (218). Two symmetrically distributed rolling rollers (213) are fixedly installed in the middle of the separation box (211). A transmission assembly is provided at one end of the two rolling rollers (213), and a drive assembly is provided at the other end of one of the rolling rollers (213). A separation component (22) is located in the middle of the housing (1) for separating oil and water.

2. The oil extraction device for urban kitchen waste according to claim 1, characterized in that: The separation component (22) includes multiple equally spaced steam pipes (222) fixedly installed on one side of the upper part of the box (1), an inclined plate (221) fixedly installed on the upper part of the box (1), and a steel belt oil scraper (3) installed in the middle of the box (1).

3. The oil extraction device for urban kitchen waste according to claim 1, characterized in that: The drive assembly includes a drive motor (215) fixedly mounted on one side of the upper part of the separation box (211), and one end of a rolling roller (213) is fixedly mounted on the drive end of the drive motor (215).

4. The oil extraction device for urban kitchen waste according to claim 1, characterized in that: The transmission assembly includes a gear (214) fixedly installed at one end of the rolling roller (213), and the two gears (214) are meshed with each other.

5. The oil extraction device for urban kitchen waste according to claim 1, characterized in that: A receiving hopper (225) is fixedly installed at the top center of the box (1), and a feeding box (212) is fixedly installed at the top of the separation box (211).

6. The oil extraction device for urban kitchen waste according to claim 1, characterized in that: A drain pipe (223) is fixedly installed on one side of the lower part of the box (1), and a drain outlet (224) is opened on one side of the upper part of the box (1).

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