A food waste reduction and oil extraction machine

By combining a screw press and an oil-water separator with a heating rod and auxiliary supply device, efficient solid-liquid separation and oil-water separation of kitchen waste are achieved, reducing the energy consumption and operating costs of the equipment. It is suitable for catering enterprises and school canteens.

CN224311302UActive Publication Date: 2026-06-02NINGBO XINQING TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO XINQING TECHNOLOGY CO LTD
Filing Date
2025-05-15
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing food waste treatment equipment requires a large amount of energy for heating during the solid-liquid separation process, resulting in high operating costs.

Method used

A screw press is used for solid-liquid separation, and an oil-water separator and heating rod are used for oil-water separation. Combined with a water purification supply device and an auxiliary supply device, the heated water is recycled and reused as a hot water source to reduce energy consumption.

Benefits of technology

It effectively reduces the operating costs of food waste treatment equipment, improves processing efficiency, and reduces the intensity of manual operation.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This utility model discloses a food waste reduction and oil extraction machine, comprising: a screw press, an oil-water separator, an oil receiving tank, a machine casing, a heating rod, an external water inlet, a water heater, an external water outlet, a discharge port, a food residue discharge port, an internal water inlet, an oil separation pipe, and an oil pressure rod. The screw press separates the solids and liquids in the food waste, and the oil-water separator achieves water-oil stratification. Finally, residue, waste oil, and wastewater are discharged separately. A purified water supply device provides heated water to the screw press, and the auxiliary supply device reduces the energy consumption of the purified water supply device, thereby reducing operating costs and improving processing efficiency. Furthermore, this application features a compact design and small size, making it suitable for places that generate large amounts of food waste, such as catering enterprises and school canteens, and can effectively reduce the intensity of manual operation.
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Description

Technical Field

[0001] This utility model relates to the field of kitchen waste treatment technology, and in particular to a kitchen waste reduction and oil extraction machine. Background Technology

[0002] Food waste treatment equipment is a type of machinery specifically designed to process food waste, with the aim of reducing its volume and rendering it harmless.

[0003] Currently, existing food waste treatment equipment mainly includes the following structures: a feeding system for initial crushing of food waste; a solid-liquid separation device for separating the solids and liquids in the food waste; an oil-water separation device for separating the grease from the liquid obtained after solid-liquid separation; and a residue treatment device for drying the separated solid residue.

[0004] While existing food waste treatment equipment can achieve waste reduction and resource recovery to a certain extent, it also has some shortcomings: in the solid-liquid separation stage, in order to facilitate extrusion processing and slag-liquid separation, the liquid input into the solid-liquid separation equipment usually needs to be heated. However, this heating process usually adopts electric heating or steam heating, which consumes a lot of energy, resulting in high overall operating costs. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides a food waste reduction and oil extraction machine. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0006] The present invention adopts the following technical solution:

[0007] A food waste reduction and oil extraction machine is provided, comprising: an oil-water separation tank, a screw press, a purified water supply device, and an auxiliary supply device. The screw press is provided with a discharge port and an internal water inlet. The oil-water separation tank is provided with a drain outlet. The purified water supply device includes: an external water inlet and a water heater, the water heater being disposed on a water supply pipe connecting the external water inlet and the internal water inlet. The auxiliary supply device includes: a filter pipe and an insulated water storage tank, the filter pipe being disposed on the drain outlet, and the insulated water storage tank being connected to the filter pipe and the internal water inlet.

[0008] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine further includes: an oil separation pipe and a machine casing; the screw press is also provided with a food residue discharge port, and the food residue discharge port and the external water inlet are located on the side wall of the machine casing; the oil-water separation tank and the screw press are located inside the machine casing, and the oil-water separation tank is located below the screw press, and the oil-water separation tank is connected to the liquid outlet end of the screw press through the oil separation pipe.

[0009] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine also includes: a heating rod; two through holes are provided side by side on the wall of the oil-water separation tank, and the heating rod passes through the through holes and extends into the oil-water separation tank.

[0010] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine also includes: a support frame, a hydraulic rod, and an oil drain outlet; the support frame is disposed on the top of the oil-water separator, the top end of the hydraulic rod is connected to the support frame, the bottom end of the hydraulic rod extends into the oil-water separator, and the oil drain outlet is disposed at the bottom end of the hydraulic rod.

[0011] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine further includes: an oil outlet, an oil supply pipe, and an oil receiving tank; the oil outlet is located on the oil-water separator, the oil outlet is connected to the oil leak outlet through the oil supply pipe, the oil receiving tank is located inside the machine casing and below the oil-water separator, and the outlet end of the oil outlet is located above the oil receiving port of the oil receiving tank.

[0012] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine further includes: a first oil level detection sensor, a second oil level detection sensor, a first water level detection sensor, and a second water level detection sensor; the first oil level detection sensor is disposed on the oil leak port, the second oil level detection sensor is disposed in the oil receiving tank, the first water level detection sensor is disposed in the oil-water separation tank, and the second water level detection sensor is disposed in the insulated water storage tank.

[0013] Furthermore, the aforementioned kitchen waste reduction and oil extraction machine further includes: a first temperature sensor, a second temperature sensor, and a pressure sensor; the first temperature sensor is disposed in the oil-water separation tank, the second temperature sensor is disposed in the insulated water storage tank, and the pressure sensor is disposed on the bottom wall of the equipment casing and located at the placement position of the oil receiving tank.

[0014] Furthermore, the auxiliary supply device also includes: a pump body and an external water outlet; the inlet of the insulated water storage tank is connected to the filter pipe, the outlet of the insulated water storage tank is connected to the liquid inlet of the pump body, the liquid outlet of the pump body is connected to the internal water inlet, the external water outlet is connected to the insulated water storage tank, and the external water outlet is located on the side wall of the equipment casing.

[0015] The beneficial effects of this utility model are as follows: This application uses a screw press to separate solids and liquids in kitchen waste, uses an oil-water separator to achieve water-oil separation, and finally discharges residue, waste oil and wastewater respectively. The water supply device provides heated water to the screw press, and the auxiliary supply device recovers the warm water in the oil-water separator and provides hot water for the solid-liquid separation process, thereby reducing the energy consumption of the water supply device, thus reducing operating costs and improving processing efficiency. Moreover, this application has a compact structure and small size, which is suitable for catering enterprises, school canteens and other places that generate a large amount of kitchen waste, and can effectively reduce the intensity of manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a kitchen waste reduction and oil extraction machine according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the oil-water separator of this utility model. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] like Figure 1-2 As shown in some illustrative embodiments, a food waste reduction and oil extraction machine is provided, including: a screw press 100, an oil-water separator 200, an oil receiving tank 300, a machine housing 400, a heating rod 500, a purified water supply device, and an auxiliary supply device.

[0021] The water supply device includes: an external water inlet 601, a water heater 602, and a water supply pipe 603.

[0022] The screw press 100 is equipped with a discharge port 110 and a food waste discharge port 120. Kitchen waste is poured into the discharge port 110, and then the screw press 100 reduces the liquid content and volume of the waste through mechanical methods such as screw extrusion and centrifugal dehydration. This application achieves solid-liquid separation of kitchen waste using the screw press 100. During the separation process, the solid waste is dehydrated by screw extrusion and discharged through the food waste discharge port 120, while the oil-water mixture enters the oil-water separator 200 for settling and stratification.

[0023] The food waste discharge port 120 and the external water inlet 601 are located on the side wall of the machine casing 400. The external water inlet 601 is connected to an external water source to provide water for the screw press 100 for pressing and separating the residue and liquid. An internal water inlet 130 is provided on the discharge port 110. A water heater 602 is located on the water supply pipe 603 connecting the external water inlet 601 and the internal water inlet 130. The external water source is introduced into the food waste reduction and oil extraction machine of this application through the external water inlet 601. When flowing through the water supply pipe 603, it is heated by the water heater 602. The heated water enters the discharge port 110 through the internal water inlet 130. After mixing with the food waste in the discharge port 110, it finally enters the screw press 100 for mechanical pressing and dehydration.

[0024] The oil-water separator 200 and the screw press 100 are installed inside the equipment casing 400, with the oil-water separator 200 located below the screw press 100. The oil-water separator 200 is connected to the liquid outlet of the screw press 100 via an oil separation pipe 210. The solid waste generated by the screw press 100 is discharged through the food residue outlet 120, while the resulting oil-water mixture is discharged from the liquid outlet of the screw press 100 and enters the oil-water separator 200 via the oil separation pipe 210 for settling and stratification.

[0025] Two through holes are opened side by side on the wall of the oil-water separator 200. The heating rod 500 passes through the through holes and extends into the oil-water separator 200 to heat the liquid contained in the oil-water separator 200. Heating can promote oil-water separation and prevent oil from condensing.

[0026] The auxiliary supply device includes: a filter pipe 701, an insulated water storage tank 702, a pump body 703, and an external water outlet 704.

[0027] The oil-water separator 200 is equipped with a drain outlet 220, and a filter pipe 701 is installed on the drain outlet 220. The water inlet of the insulated water storage tank 702 is connected to the filter pipe 701. Since the oil-water separator 200 needs to be heated to promote oil-water separation, the water in the oil-water separator 200 is constant-temperature warm water. The warm water is discharged through the drain outlet 220, filtered through the filter pipe 701 to remove impurities, and then enters the insulated water storage tank 702 for storage until it is ready for use.

[0028] The outlet of the insulated water storage tank 702 is connected to the inlet of the pump body 703, and the outlet of the pump body 703 is connected to the internal water inlet 130. When waste is being processed, if the water level in the insulated water storage tank 702 is above the lower limit and the water temperature reaches the preset temperature threshold, the pump body 703 is activated first to pump the water from the insulated water storage tank 702 to the internal water inlet 130. The water then enters the discharge port 110 through the internal water inlet 130, where it mixes with the kitchen waste and finally enters the screw press 100 for mechanical dehydration. When the insulated water storage tank 702 is low on water or the water temperature is insufficient, the purified water supply device is activated. This device provides heated water to the screw press 100 and also helps to recover warm water from the oil-water separator 200 and provide hot water for the solid-liquid separation process. This reduces the energy consumption of the purified water supply device, thereby reducing operating costs and improving processing efficiency.

[0029] The external outlet 704 is connected to the insulated water storage tank 702. The external outlet 704 is located on the side wall of the equipment casing 400. When the wastewater in the insulated water storage tank 702 reaches the upper limit, it is discharged through the external outlet 704.

[0030] The kitchen waste reduction and oil extraction machine also includes: a support frame 230, a hydraulic rod 240, and an oil drain port 250.

[0031] The bracket 230 is installed on top of the oil-water separator 200. The top end of the hydraulic rod 240 is connected to the bracket 230, and the bottom end of the hydraulic rod 240 extends into the oil-water separator 200. The connection between the hydraulic rod 240 and the bracket 230 can be a threaded connection, allowing the length of the hydraulic rod 240 extending into the oil-water separator 200 to adjust the height of the bottom end of the hydraulic rod 240 by rotating it, thereby adjusting the oil level.

[0032] The kitchen waste reduction and oil extraction machine also includes: an oil outlet 260, an oil delivery pipe 270, and an oil receiving tank 300.

[0033] The oil drain port 250 is located at the bottom of the hydraulic rod 240, and the oil outlet 260 is located on the oil-water separator 200. The oil outlet 260 is connected to the oil drain port 250 through the oil supply pipe 270. When the oil layer thickness and oil layer level reach the upper limit, waste oil enters the oil drain port 250 and reaches the oil outlet 260 through the oil supply pipe 270. The purpose of the oil supply pipe 270 is to facilitate the adjustment of the height of the oil drain port 250.

[0034] The oil receiving tank 300 is installed inside the equipment casing 400 and below the oil-water separator 200. The outlet end of the oil outlet 260 is located above the oil inlet of the oil receiving tank 300. Waste oil is discharged through the oil outlet 260 and finally enters the oil receiving tank 300.

[0035] The kitchen waste reduction and oil extraction machine also includes: a first oil level detection sensor 801, a second oil level detection sensor 802, a first water level detection sensor 803, a second water level detection sensor 804, a first temperature sensor 805, a second temperature sensor 806, and a pressure sensor 807.

[0036] The first oil level sensor 801 is installed on the oil leak port 250 to detect the oil level in the oil-water separator 200. When the oil level reaches the preset upper limit, oil discharge begins. The second oil level sensor 802 is installed in the oil receiving tank 300 to detect the oil level. When the oil level reaches the preset upper limit, it simultaneously triggers an audible and visual alarm and a voice prompt to remind personnel to handle the situation promptly. The first water level sensor 803 is installed in the oil-water separator 200 to detect the water level. The second water level sensor 804 is installed in the insulated water storage tank 702 to detect the water level. The pump 703 can only be started when the water level in the insulated water storage tank 702 is above the lower limit and the temperature is sufficient. When the wastewater in the insulated water storage tank 702 reaches the upper limit, it is discharged through the external outlet 704.

[0037] The first temperature sensor 805 is installed inside the oil-water separator 200 to detect the liquid temperature within the separator. When the detected temperature is below a preset threshold, the heating rod 500 is activated to ensure the grease maintains optimal fluidity. The second temperature sensor 806 is installed inside the insulated water tank 702 to detect the liquid temperature within the tank. The pump 703 is activated only when the water level in the insulated water tank 702 is above the lower limit and the temperature is sufficient. The pressure sensor 807 is installed on the bottom wall of the equipment casing 400, located at the position of the oil receiving tank 300, to monitor the oil level in real time. It works in conjunction with the second oil level sensor 802; when the oil level is sufficient, it simultaneously triggers an audible and visual alarm and a voice prompt to alert personnel for timely action.

[0038] The workflow is as follows:

[0039] Open the food waste outlet 120 and pour in the kitchen waste. Water enters through the external water inlet 601 and / or the pump body 703 is started. The heated water enters the screw press 100 through the internal water inlet 130. The oil-water mixture leaks into the oil-water separator 200. The heating rod 500 heats the oil-water separator 200 to form oil-water separation. When the oil level is reached, it flows out through the oil outlet 260. The food waste is discharged by the motor rotation. Finally, the oil stains are cleaned with a spray gun.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A kitchen waste oil extraction machine, characterized in that, include: The oil-water separator includes an oil-water separator, a screw press, a purified water supply device, and an auxiliary supply device. The screw press is equipped with a discharge port, and the discharge port is equipped with an internal water inlet. The oil-water separator is equipped with a drain outlet. The water purification supply device includes an external water inlet and a water heater, wherein the water heater is installed on the water supply pipe connecting the external water inlet and the internal water inlet; The auxiliary supply device includes a filter pipe and an insulated water storage tank. The filter pipe is installed on the drain outlet, and the insulated water storage tank is connected to the filter pipe and the internal water inlet.

2. The kitchen waste oil extraction machine according to claim 1, characterized in that, Also includes: The equipment includes an oil separation pipe and a housing; the screw press is also equipped with a food residue outlet, and the food residue outlet and the external water inlet are located on the side wall of the housing; the oil-water separation tank and the screw press are located inside the housing, and the oil-water separation tank is located below the screw press, and the oil-water separation tank is connected to the liquid outlet end of the screw press through the oil separation pipe.

3. The kitchen waste oil extraction machine according to claim 2, characterized in that, Also includes: Heating rod; Two through holes are opened side by side on the wall of the oil-water separator, and the heating rod passes through the through holes and extends into the oil-water separator.

4. The kitchen waste oil extraction machine according to claim 3, characterized in that, Also includes: The system includes a bracket, a hydraulic rod, and an oil drain port. The bracket is located on the top of the oil-water separator. The top end of the hydraulic rod is connected to the bracket, and the bottom end of the hydraulic rod extends into the oil-water separator. The oil drain port is located at the bottom end of the hydraulic rod.

5. The kitchen waste reduction and oil extraction machine according to claim 4, characterized in that, Also includes: The equipment includes an oil outlet, an oil supply pipe, and an oil receiving tank. The oil outlet is located on the oil-water separator and is connected to the oil leak through the oil supply pipe. The oil receiving tank is located inside the equipment casing and below the oil-water separator. The outlet end of the oil outlet is located above the oil receiving port of the oil receiving tank.

6. The kitchen waste reduction and oil extraction machine according to claim 5, characterized in that, Also includes: The system comprises a first oil level sensor, a second oil level sensor, a first water level sensor, and a second water level sensor; the first oil level sensor is located at the oil leak port, the second oil level sensor is located inside the oil receiving tank, the first water level sensor is located inside the oil-water separator, and the second water level sensor is located inside the insulated water storage tank.

7. The kitchen waste reduction and oil extraction machine according to claim 6, characterized in that, Also includes: The device comprises a first temperature sensor, a second temperature sensor, and a pressure sensor; the first temperature sensor is located inside the oil-water separator, the second temperature sensor is located inside the insulated water tank, and the pressure sensor is located on the bottom wall of the device casing at the position where the oil receiving tank is placed.

8. The kitchen waste reduction and oil extraction machine according to claim 7, characterized in that, The auxiliary supply device further includes: a pump body and an external water outlet; the inlet of the insulated water storage tank is connected to the filter pipe, the outlet of the insulated water storage tank is connected to the liquid inlet of the pump body, the liquid outlet of the pump body is connected to the internal water inlet, the external water outlet is connected to the insulated water storage tank, and the external water outlet is located on the side wall of the equipment casing.