Kitchen waste mixed liquid heating and recycling device
Through the combination device of heating tank, heat storage tank and heat exchanger, the kitchen waste mixed liquid is heated by night staggered power, which realizes the recycling of liquid phase heat, solves the problem of high energy consumption in the kitchen waste treatment process, reduces production costs and improves operation safety.
Patent Information
- Application Number
- CN202521320368.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2035-06-26
AI Technical Summary
In the existing kitchen waste treatment process, the energy consumption of the kitchen waste mixed liquid heating process is high, and the heating device is prone to scale, affecting heat conduction and increasing energy consumption loss. The electric heating device is prone to burn out and cannot meet the existing process requirements.
The combined device of heating tank, heat storage tank, three-phase centrifuge and heat exchanger is used to heat the mixed liquid of the kitchen waste in the heating tank by steam and separate it. The separated liquid phase enters the heat storage tank and exchanges the kitchen waste in the heating tank for liquid heat, realizing the recycling of the liquid phase heat and reducing heat waste.
By recycling the heated liquid phase heat, production costs are reduced, 50% of the electricity consumption is saved, direct heat waste is avoided, and operation safety and reliability are improved.
Smart Images
Figure CN223189065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of kitchen waste treatment, and is a heating recycling device for kitchen waste mixed liquid. Background Art
[0002] Kitchen waste mixed liquid is mainly high-COD salty and oily sewage (with a salt content of about 0.5% - 0.6%). The separated oil (crude oil) can be used as chemical raw materials and for producing biodiesel, with relatively high value (usually 5000 - 9000 yuan / ton). A tank of kitchen waste mixed liquid is about 8 tons (about 8 cubic meters), containing about 0.5 tons of oil. The existing treatment process is to heat the kitchen waste mixed liquid (sewage) to 75°C and then enter a three-phase centrifuge to separate oil, water, and slag. The separated oil (crude oil) can be used as chemical raw materials and for producing biodiesel. The separated sewage enters the sewage treatment system, and the separated slag is less and is transported to a landfill for landfill treatment.
[0003] Generally, kitchen waste treatment plants are far from urban areas, with power and water supply available, but without natural gas. Taking 8 tons as an example, heating 8 tons of kitchen waste mixed liquid from normal temperature (15°C) to 75°C consumes a high amount of electric energy (about over 500 degrees of electricity), resulting in high energy consumption and high operating costs.
[0004] The common process is to add kitchen waste mixed liquid to a heating kettle. There is a stirrer on the heating kettle, and heating equipment such as electric heating rods or heating coils inside is used to heat the kitchen waste mixed liquid. During the heating process of the kitchen waste mixed liquid, the surfaces of the electric heating rods and heating coils are prone to fouling, which affects heat conduction and increases energy consumption losses. At the same time, the electric heating rods are prone to overheating and burning out.
[0005] The patent document with publication number CN119219248A discloses a resource treatment process for kitchen waste wastewater, belonging to the technical field of kitchen waste resource utilization. The treatment process provided by the invention includes: adding a ferrate composite oxidant to the kitchen waste wastewater for synchronous treatment of alkali adjustment and oxidation, adding biological iron or chemically synthesized ferric sulfate for reaction, and then adding denitrifying bacteria for nitrogen removal treatment. The treatment process provided by the invention has simple operation steps and low treatment costs, and is a resource treatment process for kitchen waste that turns waste into treasure. After treatment, the COD of the kitchen waste wastewater ≥ 50000mg / L, the total nitrogen and total phosphorus contents decrease significantly, the content of small molecular organic substances in the water increases, the biodegradability increases, meeting the requirements for supplementing carbon sources in sewage treatment plants, and can be used as a carbon source for carbon source replenishment in sewage plants.
[0006] Patent document with publication number CN222846569U discloses a restaurant kitchen waste water treatment device, which relates to the technical field of restaurant kitchen waste water. A motor is fixed on the top of the shell, a fixed plate is fixed on the inner wall of the shell, a rotating shaft is fixed on the output end of the motor, a first stirring paddle is fixed on the first rotating shaft rod wall, a first gear is fixed on the rotating shaft rod wall, a second gear is meshed on both sides of the first gear, and a rotating rod is fixed on one side of the second gear. The utility model provides a trachea and an injection pipe for rapid demulsification and coagulation of grease. In order to quickly process grease and avoid waiting for a long time for the reaction to gradually emulsify the grease, ozone is injected through the trachea for demulsification and a coagulant is injected through the injection pipe to coagulate the grease. In order to shorten the reaction time and improve the reaction efficiency, the ozone and coagulant are quickly integrated with the grease in the wastewater, and the first stirring paddle and the second stirring paddle are used to fully stir the wastewater, which is very convenient and fast.
[0007] Patent document with publication number CN222842801U discloses a kitchen waste treatment device, comprising a box shell, a charging box, an insulation shell and a heating device. The box shell has a cavity and a feeding port connected to the cavity, the charging box is arranged in the cavity, the charging box has a charging cavity, and the charging cavity is connected to the feeding port. The insulation shell is arranged in the cavity, and the insulation shell is located between the inner wall of the box shell and the charging box, and the insulation shell is connected to the charging box, and an oil storage cavity is formed between the insulation shell and the charging box. The heating device is arranged in the insulation shell, and the heating device at least partially extends to the oil storage cavity. The kitchen waste treatment device of the present application is provided with an insulation shell, and an oil storage cavity is formed between the insulation shell and the charging box. The oil storage cavity is filled with insulation oil. The insulation oil has a good insulation effect, which can reduce heat loss during use, thereby reducing energy consumption and saving energy.
[0008] Patent document with publication number CN222841677U discloses an oil-water separation device for a food waste disposer, comprising a shell, an end cover being installed on the shell, an oil-water separation membrane being fixedly installed inside the shell, an oil outlet pipe and a water outlet pipe being respectively provided at the upper and lower positions of the oil-water separation membrane, and also comprising a first filter component, which comprises a filter cartridge, a first dredging member being installed inside the filter cartridge; a second filter component, which comprises a filter screen, a second dredging member for preventing the filter screen mesh from being clogged is installed on the inner wall of the shell, the second dredging member being transmission-connected to the first dredging member; and a driving component, which is connected to the first dredging member and drives the first dredging member and the second dredging member to perform circular motion at the same time. By using the first dredging member and the second dredging member in coordination, garbage in the oil and water can be effectively filtered, the stability of the garbage filtration in the oil and water is ensured, and the efficiency of oil-water separation is improved.
[0009] However, for the above-mentioned patent documents, a heating device or a stirring device is required to heat or stir the kitchen waste mixture, resulting in high energy consumption and no longer meeting the requirements of the existing process. Summary of the Invention
[0010] The utility model provides a heating and recycling device for kitchen waste mixture, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of high energy consumption in the existing kitchen waste treatment process and no longer meeting the requirements of the existing process.
[0011] The technical solution of the utility model is realized by the following measures: A heating and recycling device for kitchen waste mixture includes a heating tank, a heat storage tank, a three-phase centrifuge and a heat exchanger. Liquid inlet ends are respectively provided at the upper parts of the heating tank and the heat storage tank, and liquid outlet ends are respectively provided at the lower parts of the heating tank and the heat storage tank. The tube-side outlet end of the heat exchanger and the liquid inlet end of the heating tank are fixedly connected together through a first liquid inlet pipe. The liquid outlet end of the heating tank and the feeding end of the three-phase centrifuge are fixedly connected together through a first liquid outlet pipe. The liquid outlet end of the three-phase centrifuge and the liquid inlet end of the heat storage tank are fixedly connected together through a second liquid inlet pipe. The liquid outlet end of the heat storage tank and the shell-side inlet end of the heat exchanger are fixedly connected together through a second liquid outlet pipe. A steam inlet end is provided at the lower part of the heating tank, and a steam pipe is fixedly connected to the steam inlet end of the heating tank.
[0012] The following is a further optimization or / and improvement of the above-mentioned technical solution of the utility model:
[0013] Pumps and valves are respectively fixedly installed on the first liquid outlet pipe, the second liquid outlet pipe and the second liquid inlet pipe.
[0014] The above also includes a soft water generator and an electric steam generator. The liquid outlet end of the soft water generator and the liquid inlet end of the electric steam generator are fixedly connected together through a water inlet pipe. The steam outlet end of the electric steam generator and the steam inlet end of the heating tank are fixedly connected together through a steam pipe. The steam outlet end of the steam pipe is located inside the heating tank, and a steam silencer is fixedly installed on the steam outlet end of the steam pipe.
[0015] The above respectively provides a feeding end, an oil outlet end, a liquid outlet end and a slag outlet end on the three-phase centrifuge. An oil collecting cylinder is installed below the oil outlet end of the three-phase centrifuge, and a slag collecting pool is installed below the slag outlet end of the three-phase centrifuge.
[0016] The above respectively provides sewage discharge ends at the bottoms of the heating tank and the heat storage tank. The steam inlet end of the heating tank is higher than the sewage discharge end of the heating tank. A first sewage discharge pipe is fixedly connected to the sewage discharge end of the heating tank, and a sludge pool is arranged below the first sewage discharge pipe. A second sewage discharge pipe is fixedly connected between the sewage discharge end of the heat storage tank and the first sewage discharge pipe. Valves are respectively fixedly installed on the first sewage discharge pipe and the second sewage discharge pipe.
[0017] A second overflow pipe is fixedly installed inside the heat storage tank, a third liquid outlet pipe is fixedly connected to the outlet end of the shell side of the heat exchanger, and a connecting pipe is fixedly connected between the liquid outlet ends of the third liquid outlet pipe and the second overflow pipe.
[0018] Corresponding to the left side of the heating tank from left to right are a crushing and pressing integrated machine, a chain conveyor, and an aggregate bin in sequence. An axleless screw conveyor is fixedly installed on the aggregate bin. The discharge end of the axleless screw conveyor is located directly above the chain conveyor. A liquid outlet end is provided at the lower part of the aggregate bin. The liquid outlet end of the aggregate bin and the inlet end of the tube side of the heat exchanger are fixedly connected together through a third liquid inlet pipe; or / and, a first overflow pipe is fixedly installed inside the heating tank, a liquid return end is provided at the upper part of the aggregate bin, a return pipe is fixedly connected between the liquid return end of the aggregate bin and the liquid outlet end of the first overflow pipe, and a pump and a valve are respectively fixedly installed on the third liquid inlet pipe; or / and, heat insulation layers are respectively fixedly connected to the outer sides of the heating tank and the heat storage tank.
[0019] The structure of the present utility model is reasonable and compact, and it is convenient to use. Through the combined use of the heating tank, the heat storage tank, the three-phase centrifuge, and the heat exchanger, the kitchen waste mixed liquid in the heating tank is heated by steam using the off-peak electricity at night and then separated. The separated liquid phase enters the heat storage tank, exchanges heat with the incoming liquid of the kitchen waste in the heating tank, and then enters the sewage treatment process for treatment, achieving the purpose of recycling the heat of the liquid phase separated by the three-phase centrifuge. It has the characteristics of safety and reliability, facilitates operation, prevents the waste of heat caused by the direct entry of the liquid phase separated by the three-phase centrifuge into the sewage treatment process, and greatly reduces the production cost. Description of the Drawings
[0020] Attached Figure 1 is the front view structural schematic diagram of the best embodiment of the present utility model.
[0021] The codes in the drawings are respectively: 1 is the heating tank, 2 is the heat storage tank, 3 is the three-phase centrifuge, 4 is the heat exchanger, 5 is the first liquid inlet pipe, 6 is the first liquid outlet pipe, 7 is the second liquid inlet pipe, 8 is the second liquid outlet pipe, 9 is the steam pipe, 10 is the pump, 11 is the soft water generator, 12 is the electric steam generator, 13 is the water inlet pipe, 14 is the steam silencer, 15 is the oil collecting barrel, 16 is the first sewage discharge pipe, 17 is the sludge tank, 18 is the second sewage discharge pipe, 19 is the second overflow pipe, 20 is the third liquid outlet pipe, 21 is the connecting pipe, 22 is the crushing and pressing integrated machine, 23 is the chain conveyor, 24 is the aggregate bin, 25 is the axleless screw conveyor, 26 is the third liquid inlet pipe, 27 is the first overflow pipe, 28 is the return pipe. Detailed Embodiments
[0022] The present utility model is not limited by the following embodiments, and the specific implementation manners can be determined according to the technical solution of the present utility model and the actual situation.
[0023] In the present utility model, for the convenience of description, the description of the relative positional relationship of each component is carried out according to the layout mode of the attached drawings of the specification. For example, the positional relationships such as front, back, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 The layout mode of the attached drawings of the specification is used for description. For example, the positional relationships such as front, back, up, down, left, and right are determined according to the layout direction of the attached drawings of the specification. Figure 1 is determined according to the layout direction of the attached drawings of the specification.
[0024] The present utility model will be further described below in conjunction with embodiments and the accompanying drawings:
[0025] As shown in the attached drawings Figure 1 The heating and recycling device for the kitchen waste mixed liquid includes a heating tank 1, a heat storage tank 2, a three-phase centrifuge 3, and a heat exchanger 4. Liquid inlet ends are respectively provided at the upper parts of the heating tank 1 and the heat storage tank 2, and liquid outlet ends are respectively provided at the lower parts of the heating tank 1 and the heat storage tank 2. The tube-side outlet end of the heat exchanger 4 and the liquid inlet end of the heating tank 1 are fixedly connected together through a first liquid inlet pipe 5. The liquid outlet end of the heating tank 1 and the feeding end of the three-phase centrifuge 3 are fixedly connected together through a first liquid outlet pipe 6. The liquid outlet end of the three-phase centrifuge 3 and the liquid inlet end of the heat storage tank 2 are fixedly connected together through a second liquid inlet pipe 7. The liquid outlet end of the heat storage tank 2 and the shell-side inlet end of the heat exchanger 4 are fixedly connected together through a second liquid outlet pipe 8. A steam inlet end is provided at the lower part of the heating tank 1, and a steam pipe 9 is fixedly connected to the steam inlet end of the heating tank 1. The heating tank 1, the heat storage tank 2, the three-phase centrifuge 3, and the heat exchanger 4 can be publicly known and commonly used. In this way, through the coordinated use of the heating tank 1, the heat storage tank 2, the three-phase centrifuge 3, and the heat exchanger 4, the kitchen waste mixed liquid in the heating tank 1 is heated by steam using off-peak electricity at night and then separated. The separated liquid phase enters the heat storage tank 2, exchanges heat with the incoming liquid of the kitchen waste in the heating tank 1, and then enters the sewage treatment process for treatment, achieving the purpose of recycling the heat of the liquid phase separated by the three-phase centrifuge 3. It has the characteristics of safety and reliability, facilitates operation, prevents the waste of heat caused by the direct entry of the liquid phase separated by the three-phase centrifuge 3 into the sewage treatment process, and greatly reduces the production cost.
[0026] According to actual needs, the heating and recycling device for the kitchen waste mixed liquid can be further optimized or / and improved as follows:
[0027] As shown in the attached drawings Figure 1 Pumps 10 and valves are respectively fixedly installed on the first liquid outlet pipe 6, the second liquid outlet pipe 8, and the second liquid inlet pipe 7. In this way, it is convenient to control the flow rate of the medium in the first liquid outlet pipe 6, the second liquid outlet pipe 8, and the second liquid inlet pipe 7.
[0028] As shown in the attached drawings Figure 1As shown in the figure, it further includes a soft water generator 11 and an electric steam generator 12. The liquid outlet end of the soft water generator 11 and the liquid inlet end of the electric steam generator 12 are fixedly connected together through a water inlet pipe 13. The steam outlet end of the electric steam generator 12 and the steam inlet end of the heating tank 1 are fixedly connected together through a steam pipe 9. The steam outlet end of the steam pipe 9 is located inside the heating tank 1, and a steam silencer 14 is fixedly installed on the steam outlet end of the steam pipe 9. A check valve is fixedly installed on the steam pipe 9; the soft water generator 11, the electric steam generator 12, and the steam silencer 14 are all publicly known and commonly used. In this way, the steam generated by the electric steam generator 12 enters the heating tank 1 through the steam pipe 9. After being dispersed by the steam silencer 14, the steam evenly heats the kitchen waste mixed liquid in the heating tank 1. At the same time, the steam entering from the lower part can stir the kitchen waste mixed liquid in the heating tank 1, eliminating the need for a stirring device and greatly saving production costs. Water passes through the soft water generator 11 to generate softened water, which enters the electric steam generator 12 to generate steam; injecting steam into the heating liquid is a good heating method. Using softened water, the electric steam generator 12 will not scale, increasing its service life; after the steam injects into the heating liquid and transfers heat, it finally condenses into water; the kitchen waste mixed liquid originally needs to be diluted with some water, and the condensed steam water can be used as part of the supplementary water; during the steam heating process, the steam is injected from the lower part of the kitchen waste mixed liquid and spreads heat through the steam silencer 14, while also stirring the kitchen waste mixed liquid, eliminating the need for a stirrer.
[0029] As shown in the attachment Figure 1 As shown in the figure, a feed end, an oil outlet end, a liquid outlet end, and a slag outlet end are respectively provided on the three-phase centrifuge 3. An oil collection barrel 15 is installed below the oil outlet end of the three-phase centrifuge 3, and a slag collection tank is installed below the slag outlet end of the three-phase centrifuge 3. The three-phase centrifuge 3 is publicly known and commonly used, and can also be an existing three-phase separation device; the oil collection barrel 15 is convenient for collecting the oil (crude oil) separated from the three-phase centrifuge 3, the slag collection tank is convenient for collecting the solid phase separated from the three-phase centrifuge 3, and the liquid outlet end is convenient for collecting the liquid phase (sewage with heat) separated from the three-phase centrifuge 3, which then enters the heat storage tank 2.
[0030] As shown in the attachment Figure 1 As shown in the figure, sewage discharge ends are respectively provided at the bottoms of the heating tank 1 and the heat storage tank 2. The steam inlet end of the heating tank 1 is higher than the sewage discharge end of the heating tank 1. A first sewage discharge pipe 16 is fixedly connected to the sewage discharge end of the heating tank 1. A sludge tank 17 is arranged below the first sewage discharge pipe 16. A second sewage discharge pipe 18 is fixedly connected between the sewage discharge end of the heat storage tank 2 and the first sewage discharge pipe 16. Valves are fixedly installed on the first sewage discharge pipe 16 and the second sewage discharge pipe 18 respectively. The first sewage discharge pipe 16 and the second sewage discharge pipe 18 are convenient for periodically discharging the impurities or sludge settled at the bottoms of the heating tank 1 and the heat storage tank 2 respectively.
[0031] As shown in the attachmentFigure 1 As shown in the figure, a second overflow pipe 19 is fixedly installed in the heat storage tank 2. A third liquid outlet pipe 20 is fixedly connected to the shell-side outlet end of the heat exchanger 4. A connecting pipe 21 is fixedly connected between the liquid outlet ends of the third liquid outlet pipe 20 and the second overflow pipe 19. The second overflow pipe 19 facilitates the discharge of sewage higher than the liquid inlet end to the sewage treatment process through the connecting pipe 21 and the third liquid outlet pipe 20.
[0032] As attached Figure 1 As shown in the figure, a crushing and pressing integrated machine 22, a chain conveyor 23, and an aggregate bin 24 are arranged in sequence from left to right on the left side of the heating tank 1. A shaftless screw conveyor 25 is fixedly installed on the aggregate bin 24. The discharge end of the shaftless screw conveyor 25 is located directly above the chain conveyor 23. A liquid outlet end is provided at the lower part of the aggregate bin 24. The liquid outlet end of the aggregate bin 24 and the tube-side inlet end of the heat exchanger 4 are fixedly connected together through a third liquid inlet pipe 26; or / and, a first overflow pipe 27 is fixedly installed in the heating tank 1. A liquid return end is provided at the upper part of the aggregate bin 24. A return pipe 28 is fixedly connected between the liquid return end of the aggregate bin 24 and the liquid outlet end of the first overflow pipe 27. A pump 10 and a valve are respectively fixedly installed on the third liquid inlet pipe 26; or / and, heat insulation layers are respectively fixedly connected to the outer sides of the heating tank 1 and the heat storage tank 2. The crushing and pressing integrated machine 22, the chain conveyor 23, the aggregate bin 24, and the shaftless screw conveyor 25 are all well-known and publicly used. The solid phase separated in the aggregate bin 24 is conveyed to the chain conveyor 23 through the shaftless screw conveyor 25. The solid phase that can be used as fertilizer after sorting is conveyed to the crushing and pressing integrated machine 22, and after being crushed and pressed by the crushing and pressing integrated machine 22, it is sent for composting.
[0033] The working process of the present utility model is as follows:
[0034] The kitchen waste is collected by a tank truck and transported to the treatment plant, and poured into the aggregate bin 24 (aggregate hopper). The separated oil-water mixture is pumped by a pump 10 through the heat exchanger 4 and enters the heating tank 1 for storage (the temperature rises from about the average value of 15°C to 45°C after being heated by the heat exchanger 4); simultaneously, the liquid (hot sewage) in the heat storage tank 2 is pumped into the heat exchanger 4 by a pump 10 of the same specification, and the heat energy is transferred to the oil-water mixture transported from the aggregate hopper to the heating tank 1. The sewage temperature drops from about 70°C to about 38°C after passing through the heat exchanger 4, and then enters the sewage treatment system for treatment to the design standard. The energy consumption is approximately saved by 50% on average.
[0035] Compared with the traditional heating kettle, the present utility model uses the heating tank 1 to store the oil-water mixture (kitchen waste mixture), and automatically starts the electric steam generator 12 using the electricity at night (the valley electricity price at night, which can save more than half of the electricity cost compared with working during the day), injects steam into the heating tank 1 to heat the oil-water mixture to 75°C or slightly higher temperature, and the outside of the heating tank 1 is insulated to reduce heat energy loss.
[0036] Work in the morning, start the three-phase centrifuge 3, and transfer the oil-water mixture in the heating tank 1 to the three-phase centrifuge 3. The separated grease enters the container (oil collecting cylinder 15) for storing grease; the separated slag is very little, and after accumulation, it is transported to the landfill for landfill treatment; the separated liquid phase (hot sewage) with a relatively high temperature (about 70 °C) is input into the heat storage tank 2 for storage. Both the heat storage tank 2 and the heating tank 1 adopt a cone-bottom tank structure, with basically the same structure, and both are provided with heat insulation layers.
[0037] There is a first overflow pipe 27 in the heating tank 1, and the first overflow pipe 27 leads to the aggregate bin 24 (aggregate hopper). When the oil-water mixture in the heating tank 1 exceeds the specified volume, it flows back to the aggregate bin 24 (aggregate hopper) through the first overflow pipe 27; there is a second overflow pipe 19 in the heat storage tank 2, and the second overflow pipe 19 leads to the sewage treatment process. When the liquid phase (hot sewage) in the heat storage tank 2 exceeds the specified volume, it flows to the sewage treatment process through the second overflow pipe 19. The first sewage discharge pipe 16 and the second sewage discharge pipe 18 at the bottoms of the heating tank 1 and the heat storage tank 2 are connected to the sludge tank 17 (underground). The valves are regularly opened to discharge the sediment at the bottoms of the heating tank 1 and the heat storage tank 2 into the sludge tank 17.
[0038] The heat exchanger 4 adopts a detachable plate heat exchanger, which is regularly disassembled and cleaned of scale; two groups are connected in parallel, with quick connectors, and pipelines and valves are equipped. The corresponding valves can be closed for quick disassembly and assembly.
[0039] The above technical features constitute the best embodiment of the present utility model, which has strong adaptability and the best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.
Claims
1. A device for heating and recycling mixed liquid of food waste, characterized in that The utility model comprises a heating tank, a heat storage tank, a three-phase centrifuge and a heat exchanger, wherein a liquid inlet is respectively provided at the upper part of the heating tank and the heat storage tank, and a liquid outlet is respectively provided at the lower part of the heating tank and the heat storage tank, the tube side outlet end of the heat exchanger and the liquid inlet end of the heating tank are fixedly connected together through a first liquid inlet pipe, the liquid outlet end of the heating tank and the feed end of the three-phase centrifuge are fixedly connected together through a first liquid outlet pipe, the liquid outlet end of the three-phase centrifuge and the liquid inlet end of the heat storage tank are fixedly connected together through a second liquid inlet pipe, the liquid outlet end of the heat storage tank and the shell side inlet end of the heat exchanger are fixedly connected together through a second liquid outlet pipe, a steam inlet is provided at the lower part of the heating tank, and a steam pipe is fixedly connected to the steam inlet end of the heating tank.
2. The device for heating and recycling mixed liquid of food waste according to claim 1, characterized in that A pump and a valve are fixedly installed on the first liquid outlet pipe, the second liquid outlet pipe and the second liquid inlet pipe respectively.
3. The device for heating and recycling mixed liquid of food waste according to claim 1 or 2, characterized in that It also includes a soft water generator and an electric steam generator. The liquid outlet end of the soft water generator and the liquid inlet end of the electric steam generator are fixedly connected together through a water inlet pipe. The steam outlet end of the electric steam generator and the steam inlet end of the heating tank are fixedly connected together through a steam pipe. The steam outlet end of the steam pipe is located in the heating tank. A steam muffler is fixedly installed on the steam outlet end of the steam pipe.
4. The device for heating and recycling mixed liquid of food waste according to claim 1 or 2, characterized in that The three-phase centrifuge is respectively provided with a feed end, an oil outlet end, a liquid outlet end and a slag outlet end. An oil collecting drum is installed below the oil outlet end of the three-phase centrifuge, and a slag collecting pool is installed below the slag outlet end of the three-phase centrifuge.
5. The device for heating and recycling mixed liquid of food waste according to claim 3, characterized in that The three-phase centrifuge is respectively provided with a feed end, an oil outlet end, a liquid outlet end and a slag outlet end. An oil collecting drum is installed below the oil outlet end of the three-phase centrifuge, and a slag collecting pool is installed below the slag outlet end of the three-phase centrifuge.
6. The device for heating and recycling mixed liquid of food waste according to claim 1 or 2, characterized in that The bottom of the heating tank and the heat storage tank are respectively provided with a sewage end. The steam inlet end of the heating tank is higher than the sewage end of the heating tank. A first sewage pipe is fixedly connected to the sewage end of the heating tank. A sludge pool is provided below the first sewage pipe. A second sewage pipe is fixedly connected between the sewage end of the heat storage tank and the first sewage pipe. Valves are fixedly installed on the first sewage pipe and the second sewage pipe.
7. The device for heating and recycling mixed liquid of food waste according to claim 5, characterized in that The bottom of the heating tank and the heat storage tank are respectively provided with a sewage end. The steam inlet end of the heating tank is higher than the sewage end of the heating tank. A first sewage pipe is fixedly connected to the sewage end of the heating tank. A sludge pool is provided below the first sewage pipe. A second sewage pipe is fixedly connected between the sewage end of the heat storage tank and the first sewage pipe. Valves are fixedly installed on the first sewage pipe and the second sewage pipe.
8. The device for heating and recycling mixed liquid of food waste according to claim 1 or 2, characterized in that A second overflow pipe is fixedly installed in the heat storage tank, a third liquid outlet pipe is fixedly connected to the shell side outlet end of the heat exchanger, and a connecting pipe is fixedly connected between the third liquid outlet pipe and the liquid outlet end of the second overflow pipe.
9. The device for heating and recycling mixed liquid of food waste according to claim 7, characterized in that A second overflow pipe is fixedly installed in the heat storage tank, a third liquid outlet pipe is fixedly connected to the shell side outlet end of the heat exchanger, and a connecting pipe is fixedly connected between the third liquid outlet pipe and the liquid outlet end of the second overflow pipe.
10. The device for heating and recycling mixed liquid of food waste according to claim 1 or 2, characterized in that From left to right, the left side of the heating tank corresponds to the crushing and pressing machine, the chain conveyor and the collection bin. A shaftless screw conveyor is fixedly installed on the collection bin, and the discharge end of the shaftless screw conveyor is located directly above the chain conveyor. A liquid outlet is provided at the lower part of the collection bin, and the liquid outlet end of the collection bin and the pipe inlet end of the heat exchanger are fixedly connected together through a third liquid inlet pipe; or / and, a first overflow pipe is fixedly installed in the heating tank, a return liquid end is provided at the upper part of the collection bin, a return pipe is fixedly connected between the return liquid end of the collection bin and the liquid outlet end of the first overflow pipe, and a pump and a valve are respectively fixedly installed on the third liquid inlet pipe; or / and, insulation layers are respectively fixedly connected to the outsides of the heating tank and the heat storage tank.