Multifunctional feed hopper for kitchen waste treatment

Abstract

The utility model relates to the technical field of kitchen waste treatment, and particularly discloses a multifunctional feed hopper for kitchen waste treatment. Comprising a hopper, a heating assembly arranged in the hopper and installed on the side wall of the hopper, a conveying mechanism with an inlet formed below the heating assembly and an outlet formed in the outer side of the hopper, and a leachate collecting pipe arranged at the bottom of the hopper and communicated with the interior of the hopper. The heating assembly is arranged in the hopper, so that the kitchen waste entering the hopper is heated, and more oil can be separated out from the heated kitchen waste; then the oil liquid enters a leachate collecting bin and is discharged through a leachate collecting pipe, and meanwhile the kitchen waste with the oil liquid separated out is transferred through a conveying mechanism; compared with the prior art, the oil extraction rate of the kitchen waste is increased, and the possibility that the conveying mechanism is damaged due to the fact that oil enters the conveying mechanism is reduced; after the oil liquid is separated out, the weight of the kitchen waste solid-phase matter is reduced, and the conveying energy consumption of the spiral conveyor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of restaurant and kitchen waste treatment, and more specifically, to a multifunctional feeding hopper for restaurant and kitchen waste treatment. Background Art

[0002] The main process for treating food waste in the prior art is pretreatment + centrifugal oil extraction + anaerobic process; the food waste first enters the feed hopper. Since the water content of food waste is high, generally about 90%. Therefore, after entering the feed hopper, some leachate will be deposited from the food waste. The leachate is generally collected and used for pulping in the pulping process, and enters the centrifugal oil extraction unit together with the pulp. After entering the feed hopper, the food waste is sent to the pretreatment unit through the screw conveyor at the bottom of the feed hopper. The pretreatment unit uses physical and mechanical methods to sort, crush and pulp the food waste, separate the non-biodegradable impurities such as plastics, aggregates, paper, shells, and fine sand particles in the food waste, and make the biodegradable organic matter in the food waste into an organic pulp with a particle size of less than 6 mm and a solid content of less than 10%. The organic slurry enters the slurry heating tank of the centrifugal oil extraction unit, where the organic slurry is heated from room temperature to 85°C by steam, and then enters the three-phase centrifugal separator for oil extraction to separate the oil in the slurry. The organic slurry from which the oil is separated enters the anaerobic reactor for anaerobic biodegradation. Through the pretreatment + centrifugal oil extraction process, the solid phase impurities in the organic slurry of food waste can be removed, which is more conducive to subsequent anaerobic degradation; and the economically valuable by-product - oil and fat can be separated.

[0003] Most food waste treatment plants sell the separated oil and fat to the outside. The current market price of oil and fat is as high as several thousand yuan per ton. The income from the sale of oil and fat has become one of the main sources of operating income for food waste treatment plants.

[0004] Therefore, improving the oil extraction rate of food waste has a promoting effect on improving the economic benefits of food waste treatment plants. However, food waste treatment plants in the prior art almost all perform oil extraction in the centrifugal oil extraction unit, and only heat the food slurry in the slurry heating tank. A part of the oil adhered to the solid impurities is lost from the food slurry with the solid phase during the sorting process. This part of the oil does not enter the centrifugal oil extraction unit with the leachate, resulting in a certain loss in the oil extraction rate. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a multifunctional feeding hopper for treating kitchen waste;

[0006] The solution adopted by the utility model to solve the technical problem is:

[0007] A multifunctional feeding hopper for kitchen waste treatment comprises a hopper, a heating component arranged in the hopper and installed on the side wall of the hopper, a conveying mechanism with an inlet arranged below the heating component and an outlet arranged outside the hopper, and a leachate collecting pipe arranged at the bottom of the hopper and connected to the inside of the hopper.

[0008] When in use, the food waste enters the hopper from the feed port of the hopper, and is heated by the heating component. The heating component heats the food waste from room temperature to about 50°C. As the temperature of the food waste increases, more grease adhering to the solid phase in the food waste is precipitated into the liquid phase, and enters the subsequent food waste slurry centrifugal oil extraction system through the leachate collection pipe, so as to further improve the oil extraction rate of the food waste; the food waste enters the conveying mechanism from the entrance and is conveyed to other equipment for processing;

[0009] In some possible implementations, in order to effectively collect the heated leachate and transfer the food waste;

[0010] The part of the conveying mechanism located at the hopper divides the hopper into a heating chamber for installing a heating component and a leachate collecting chamber for collecting liquid and communicating with a leachate collecting pipe.

[0011] In some possible implementations, in order to effectively realize the transfer of the leachate and the food waste after the leachate through the cooperation of the hopper, the conveying mechanism and the heating component;

[0012] The hopper comprises a shell having a feed inlet and a trapezoidal cross-section, and a bottom plate installed at the bottom of the shell and used to close the side of the shell away from the feed inlet;

[0013] A liquid outlet communicated with the leachate collecting pipe is arranged on one side of the shell body close to the bottom plate, and the liquid outlet is located on the side of the conveying mechanism away from the feed inlet.

[0014] In some possible implementations,

[0015] The bottom plate is arranged at an inclination, and the plane on which the bottom plate is located forms an angle A with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤A≤10°.

[0016] In some possible implementations,

[0017] The heating component is an annular heater installed on the inner side of the shell and coaxially arranged with the feed port;

[0018] The annular heater is located in the heating chamber.

[0019] In some possible implementations,

[0020] The leachate collecting pipe is arranged in an inclined manner, and its inclination direction is the same as the inclination direction of the bottom plate and is parallel to each other.

[0021] In some possible implementations,

[0022] The conveying mechanism is a screw conveyor with an inlet and an outlet; the inlet of the screw conveyor is located in the hopper and the outlet is located outside the hopper.

[0023] In some possible implementations,

[0024] The screw conveyor is arranged obliquely and cooperates with the bottom plate and the shell to form a collection bin with an obtuse triangle cross section;

[0025] The axis of the screw conveyor forms an angle B with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤B≤20°.

[0026] In some possible implementations,

[0027] The leachate collecting pipe is arranged on the shell and is located at one side of the shell close to the bottom.

[0028] In some possible implementations,

[0029] The conveying mechanism is at least one group. When it is two or more groups, they are arranged in parallel and on the same plane.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The utility model effectively heats the food waste entering the hopper by arranging a heating component in the hopper, so that more oil can be precipitated from the heated food waste; the oil will then enter the leachate collection bin and be discharged through the leachate collection pipe, and the food waste after the oil is precipitated will be transported through the conveying mechanism; compared with the prior art, the oil extraction rate of food waste is improved, and the possibility of damage to the conveying mechanism caused by the oil entering the conveying mechanism is reduced; the weight of the solid phase of the food waste will become lighter after the oil is precipitated, thereby saving the conveying energy consumption of the screw conveyor;

[0032] The utility model has a simple structure and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is the front view of the utility model;

[0034] Figure 2 It is a side view of the utility model;

[0035] Figure 3 It is a top view of the utility model;

[0036] Among them: 1. hopper; 11. shell; 12. bottom plate; 111. feed port; 2. heating component; 3. conveying mechanism; 31. inlet; 32. outlet; 4. leachate collection pipe. DETAILED DESCRIPTION

[0037] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity limit, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can indicate: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0038] The utility model is described in detail below.

[0039] like Figure 1-Figure 3 As shown:

[0040] A multifunctional feeding hopper for kitchen waste treatment comprises a hopper 1, a heating assembly 2 arranged in the hopper 1 and mounted on the side wall of the hopper 1, a conveying mechanism with an inlet 31 arranged below the heating assembly 2 and an outlet 32 ​​arranged outside the hopper 1, and a leachate collecting pipe 4 arranged at the bottom of the hopper 1 and connected to the inside of the hopper 1. The conveying mechanism is at least one group, and when it is two or more groups, they are arranged in parallel and on the same plane.

[0041] When in use, the food waste enters the hopper 1 from the feed port 111 of the hopper 1, and is heated by the heating component 2. The heating component 2 heats the food waste from room temperature to about 50°C. As the temperature of the food waste increases, more grease adhering to the solid phase in the food waste is precipitated into the liquid phase, and enters the subsequent food waste slurry centrifugal oil extraction system through the leachate collection pipe 4, so as to further improve the oil extraction rate of the food waste; the food waste enters the conveying mechanism from the inlet 31, and is conveyed to other equipment for processing;

[0042] In the utility model, the conveying mechanism can be one group or multiple groups, which can be adjusted mainly according to the size of the hopper 1 and the use requirements;

[0043] In some possible implementations, in order to effectively collect the heated leachate and transfer the food waste;

[0044] The part of the conveying mechanism located at the hopper 1 divides the hopper 1 into a heating chamber for installing the heating component 2 and a leachate collection chamber for collecting liquid and connected to the leachate collection pipe 4 .

[0045] The inlet 31 of the conveying mechanism is arranged at a side away from the bottom plate 12 and is located in the heating chamber. The food waste after being heated and precipitated into slurry will enter the conveying mechanism through the inlet 31 and will be transported to other equipment for subsequent sorting and processing by the conveying mechanism.

[0046] In some possible implementations, in order to effectively realize the transfer of the leachate and the food waste after the leachate through the cooperation between the hopper 1, the conveying mechanism and the heating component 2;

[0047] The hopper 1 comprises a shell 11 having a feed port 111 and a trapezoidal cross-section, and a bottom plate 12 installed at the bottom of the shell 11 and used to close the side of the shell 11 away from the feed port 111;

[0048] The structure has a trapezoidal cross section, so that it can be a trumpet-shaped or quadrangular prism structure; wherein the feed port 111 is arranged in the same manner as the hopper 1 in the prior art, and is arranged at the large end, and the bottom plate 12 is arranged at the small end;

[0049] A liquid outlet connected to the leachate collecting pipe 4 is provided on one side of the shell 11 close to the bottom plate 12 , and the liquid outlet is located on the side of the conveying mechanism away from the feed port 111 .

[0050] The conveying mechanism is partially located inside the housing 11 and partially located outside the housing 11. The inlet 31 receives and transfers the heated garbage.

[0051] The conveying mechanism will be spread throughout the shell 11, dividing the interior of the shell 11 into a heating chamber and a leach collection chamber; the full-coverage setting is adopted to prevent food waste from entering the leach collection chamber, and the leachate flows into the leach collection chamber along the gap between the conveying mechanism and the inner side of the shell 11 or the gap between two adjacent groups of conveying mechanisms.

[0052] In some possible implementations, in order to facilitate the discharge and transportation of the liquid in the leachate collection bin;

[0053] The bottom plate 12 is inclined, and the plane where the bottom plate 12 is located forms an angle A with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤A≤10°; preferably, A=5°.

[0054] By tilting the bottom plate 12 , the leachate collection bin will form a funnel structure, so that the collected liquid can be discharged better. The liquid in the leachate collection bin will flow along the tilted direction of the bottom plate 12 to be discharged.

[0055] In some possible implementations, in order to effectively achieve uniform heating of the food waste, more liquid (oil) can be precipitated from the food waste;

[0056] The heating component 2 is an annular heater installed on the inner side of the shell 11 and coaxially arranged with the feed port 111;

[0057] The annular heater is located in the heating chamber, and uniformly heats the kitchen waste entering the heating chamber from the outer side to the inner side, so that the heating area is larger and more oil is precipitated.

[0058] The heating assembly 2 is a prior art, and the improvement of the present invention is not in the heating assembly 2 itself, and its internal structure will not be described in detail here;

[0059] In some possible implementations, in order to enable the oil to be better discharged from the leachate collection tank to the subsequent oil extraction equipment;

[0060] The leachate collecting pipe 4 is arranged in an inclined manner, and its inclination direction is the same as the inclination direction of the bottom plate 12 and is parallel to each other.

[0061] In some possible implementations, in order to effectively realize the transportation and transfer of heated food waste;

[0062] The conveying mechanism is a screw conveyor having an inlet 31 and an outlet 32 ​​; the inlet 31 of the screw conveyor is located inside the hopper 1 and the outlet 32 ​​thereof is located outside the hopper 1 .

[0063] In some possible implementations,

[0064] The screw conveyor is arranged at an angle; the distance between the portion of the screw conveyor located outside the hopper 1 and the feed inlet 111 is smaller than the distance between the portion of the screw conveyor located inside the hopper 1 and the feed inlet 111;

[0065] The screw conveyor cooperates with the bottom plate 12 and the housing 11 to form a collection bin with an obtuse triangle cross section;

[0066] The base of the obtuse triangle is on the surface where the screw conveyor is located, and the two sides of the obtuse triangle are respectively on the plane where the bottom plate 12 is located and the surface where the shell 11 is located; the water in the leachate collection bin flows along the inclined direction of the bottom plate 12 through the liquid outlet into the leachate collection pipe 4;

[0067] Furthermore, the axis of the screw conveyor forms an angle B with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤B≤20; preferably B=5° or 10°.

[0068] Furthermore, the screw conveyor is an existing product, including a driving motor, a shell 11 provided with an inlet 31 and an outlet 32, a rotating shaft rotatably installed in the shell 11 and connected to the driving motor, and a spiral blade mounted on the rotating shaft; its internal structure and working principle are not described in detail here.

[0069] In some possible implementations,

[0070] The leachate collecting pipe 4 is disposed on the housing 11 and is located on one side of the housing 11 close to the bottom.

[0071] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A multifunctional feeding hopper for kitchen waste treatment, characterized in that: The invention comprises a hopper, a heating component arranged in the hopper and installed on the side wall of the hopper, a conveying mechanism with an inlet arranged below the heating component and an outlet arranged outside the hopper, and a leachate collecting pipe arranged at the bottom of the hopper and connected with the inside of the hopper.

2. A multifunctional feed hopper for kitchen waste treatment according to claim 1, characterized in that: The part of the conveying mechanism located at the hopper divides the hopper into a heating chamber for installing a heating component and a leachate collecting chamber for collecting liquid and communicating with a leachate collecting pipe.

3. The multifunctional feeding hopper for kitchen waste treatment according to claim 1, characterized in that: The hopper comprises a shell having a feed inlet and a trapezoidal cross-section, and a bottom plate installed at the bottom of the shell and used to close the side of the shell away from the feed inlet; A liquid outlet communicated with the leachate collecting pipe is arranged on one side of the shell body close to the bottom plate, and the liquid outlet is located on the side of the conveying mechanism away from the feed inlet.

4. The multifunctional feeding hopper for kitchen waste treatment according to claim 3, characterized in that: The bottom plate is arranged at an inclination, and the plane on which the bottom plate is located forms an angle A with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤A≤10°.

5. The multifunctional feeding hopper for kitchen waste treatment according to claim 3, characterized in that: The heating component is an annular heater installed on the inner side of the shell and coaxially arranged with the feed port; The annular heater is located in the heating chamber.

6. The multifunctional feeding hopper for kitchen waste treatment according to claim 4, characterized in that: The leachate collecting pipe is arranged in an inclined manner, and its inclination direction is the same as the inclination direction of the bottom plate and is parallel to each other.

7. A multifunctional feeding hopper for kitchen waste treatment according to any one of claims 1 to 6, characterized in that: The conveying mechanism is a screw conveyor with an inlet and an outlet; the inlet of the screw conveyor is located in the hopper and the outlet is located outside the hopper.

8. The multifunctional feeding hopper for kitchen waste treatment according to claim 7, characterized in that: The screw conveyor is arranged obliquely and cooperates with the bottom plate and the shell to form a collection bin with an obtuse triangle cross section; The axis of the screw conveyor forms an angle B with the horizontal plane of the liquid collected in the leachate collection bin, wherein 5°≤B≤10°.

9. The multifunctional feeding hopper for kitchen waste treatment according to claim 8, characterized in that: The leachate collecting pipe is arranged on the shell and is located at one side of the shell close to the bottom.

10. The multifunctional feeding hopper for kitchen waste treatment according to claim 7, characterized in that: The conveying mechanism is at least one group. When it is two or more groups, they are arranged in parallel and on the same plane.

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