Kitchen garbage desanding device

Abstract

The utility model belongs to the technical field of kitchen garbage treatment, and particularly relates to a desanding device for kitchen garbage. According to the desanding device for the kitchen garbage, the outer cylinder and the rotating cylinder are combined to form an annular flow field, so that vortex formed by a stirring type center is avoided, and the sand setting efficiency is improved; the feed port and the discharge port adopt a reverse small included angle design, so that materials can flow out from the discharge port after entering a flow field from the feed port and passing through a larger central angle, the sand setting retention time is prolonged, the sand setting efficiency is effectively improved, and continuous operation of the system can be realized; a special settled sand scraping device is designed, settled sand accumulation at the bottom of the outer cylinder is avoided, the effective utilization space in the sand removing device is improved, and the sand settling system operates efficiently; the garbage stirring assembly is designed to prevent organic matters from sinking along with sand, so that the organic matter recovery rate is increased, and the resource utilization rate is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen waste treatment, and particularly relates to a kitchen waste sand removal device. Background Art

[0002] Kitchen waste refers to the waste generated in residents' daily life, food processing, catering services, unit meal supply and other activities, including discarded vegetable leaves, leftovers, rice, fruit peels, eggshells, tea dregs, bones, etc. Its main sources are family kitchens, restaurants, hotels, canteens, markets and other industries related to food processing.

[0003] At present, in the field of domestic kitchen waste treatment, the sand removal system mostly adopts the natural gravity sedimentation method or cyclone sand removal. Among them, natural gravity sand sedimentation generally designs a sand sedimentation hopper on a screw conveyor, and the sand sinks under the action of gravity. Since it takes a certain amount of time for the sand to sink, for continuous operation or insufficient sand sedimentation time, it is difficult for the sand to sink, resulting in incomplete sand removal; cyclone sand removal uses the principle of centrifugation. Due to the different densities of sand and water, the sand and water are separated. However, due to the complex composition of domestic kitchen waste and the high viscosity of the materials, a lot of organic matter is separated out together with the sand, resulting in a large loss of organic matter and reducing the efficiency of the subsequent anaerobic system. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a kitchen waste sand removal device to solve the technical problem of poor sand removal effect of kitchen waste in the prior art.

[0005] The present application provides a kitchen waste sand removal device, including:

[0006] A rotating cylinder arranged inside an outer cylinder; a flow field is formed between the outer wall of the rotating cylinder and the inner wall of the outer cylinder; a feed port communicating with the flow field is arranged on the top plate of the outer cylinder, and a discharge port communicating with the flow field is arranged on the side wall of the outer cylinder; the connection line between the feed port and the axis of the rotating cylinder is L1, and the connection line between the discharge port and the axis of the rotating cylinder is L2. Among them, along the direction opposite to the rotation direction of the rotating cylinder, the central angle A formed by L1 and L2 is 30° - 45°;

[0007] A garbage stirring assembly arranged on the outer periphery of the rotating cylinder for stirring the garbage in the flow field;

[0008] A sand scraping device arranged on the rotating shaft at the bottom of the rotating cylinder for scraping the sand into the sand conveying mechanism at the lower part of the outer cylinder; and

[0009] A driving device arranged on the top of the outer cylinder for driving the rotating cylinder to rotate.

[0010] In an embodiment of the present application, the garbage stirring assembly includes a plurality of stirring plates arranged on the outer periphery of the rotating cylinder.

[0011] In an embodiment of the present application, the upper end of the stirring plate is fixedly connected to the top plate of the rotating cylinder through an upper connecting bar, and the lower end is fixedly connected to the bottom plate of the rotating cylinder through a lower connecting bar.

[0012] In an embodiment of the present application, the stirring plate includes a flat plate portion located inside and a bent portion located outside;

[0013] The connecting line between the inner side edge of the flat plate portion and the axis of the rotating cylinder is L3, and the angle B between L3 and the plane where the flat plate portion is located is 150° - 160°.

[0014] In an embodiment of the present application, the sand scraping device includes a plurality of scraping plates;

[0015] The cross-section of the scraping plate is in a Z shape.

[0016] In an embodiment of the present application, the bottom of the outer cylinder is in a V shape;

[0017] The inlet of the sand conveying mechanism is connected to one inclined surface at the bottom of the outer cylinder;

[0018] One end of the scraping plate is connected to the rotating shaft at the bottom of the rotating cylinder, and the other end is provided with an inclined edge adapted to the inclined surface at the bottom of the outer cylinder.

[0019] In an embodiment of the present application, the sand conveying mechanism is an upwardly inclined sealed screw conveyor.

[0020] In an embodiment of the present application, a sand outlet is provided at the top of the sealed screw conveyor, and the height of the sand outlet is higher than the liquid level height inside the outer cylinder.

[0021] The beneficial effects of the present utility model are as follows:

[0022] The kitchen waste sand removal device of the present utility model forms an annular flow field by combining the outer cylinder and the rotating cylinder, avoiding the eddy current formed in the center of the stirring type, and improving the sand sedimentation efficiency; the feeding port and the discharging port adopt a reverse small angle design, so that after the material enters the flow field from the feeding port, it has to pass through a large central angle before it can flow out from the discharging port, increasing the sand sedimentation residence time, effectively improving the sand sedimentation efficiency, and enabling the system to operate continuously; a special sand scraping device is designed to avoid the accumulation of sand at the bottom of the outer cylinder, improve the effective utilization space inside the sand removal device, and enable the sand sedimentation system to operate efficiently; a garbage stirring component is designed to avoid the organic matter sinking together with the sand, improve the recovery rate of the organic matter, and improve the resource utilization rate.

[0023] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0024] In order to make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is a side view of the kitchen waste sand - removing device of the present utility model;

[0027] Figure 2 is a top view of the kitchen waste sand - removing device of the present utility model;

[0028] Figure 3 is a side view of the garbage stirring assembly of the kitchen waste sand - removing device of the present utility model;

[0029] Figure 4 is a three - dimensional view of the sand - settling scraping device of the kitchen waste sand - removing device of the present utility model.

[0030] In the figure:

[0031] outer cylinder 1, feed inlet 11, discharge outlet 12, rotating cylinder 2, flow field 3, garbage stirring assembly 4, stirring plate 41, flat plate part 411, bent part 412, upper connecting bar 42, lower connecting bar 43, sand - settling scraping device 5, scraping plate 51, bevel edge 511, sand - settling conveying mechanism 6, sand outlet 61, driving device 7. Specific Embodiments

[0032] In order to make the objects, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0033] See Figure 1 and Figure 2 , in an embodiment of the present application, the kitchen waste sand - removing device includes:

[0034] A rotating cylinder 2 disposed within an outer cylinder 1; a flow field 3 is formed between the outer wall of the rotating cylinder 2 and the inner wall of the outer cylinder 1; a feed port 11 communicating with the flow field 3 is provided on the top plate of the outer cylinder 1, and a discharge port 12 communicating with the flow field 3 is provided on the side wall of the outer cylinder 1; the connecting line between the feed port 11 and the axis of the rotating cylinder 2 is L1, and the connecting line between the discharge port 12 and the axis of the rotating cylinder 2 is L2. Among them, in the direction opposite to the rotation direction of the rotating cylinder 2, the central angle A formed by L1 and L2 is 30° - 45°;

[0035] A garbage stirring assembly 4 is disposed on the outer periphery of the rotating cylinder 2 for stirring the garbage in the flow field 3;

[0036] A sand scraping device 5 is disposed on the rotating shaft at the bottom of the rotating cylinder 2 for scraping the deposited sand into a sand conveying mechanism 6 at the lower part of the outer cylinder 1; and

[0037] A driving device 7 is disposed on the top of the outer cylinder 1 for driving the rotating cylinder 2 to rotate.

[0038] In this embodiment, referring to Figure 2 As shown, the kitchen waste slurry enters the flow field 3 from the feed port 11. Driven by the garbage stirring assembly 4, it reaches the discharge port 12 after passing through at least a large circumferential angle along the direction indicated by the turning arrow. Part of the slurry is discharged from the discharge port 12, so that the slurry has a sufficient travel path, increasing the residence time of the deposited sand and effectively improving the sand deposition efficiency, and the system can operate continuously.

[0039] In this embodiment, the output shaft of the driving device 7 can be connected to the upper end of the rotating cylinder 2; by adopting the combination of the outer cylinder 1 and the rotating cylinder 2 to form an annular flow field 3, the slurry can circulate fully within the annular flow field 3, avoiding the eddy current formed in the center of the stirring type and improving the sand deposition efficiency.

[0040] In this embodiment, by designing the garbage stirring assembly 4, it is possible to prevent the organic matter from sinking together with the sand, improve the recovery rate of the organic matter, and improve the resource utilization rate.

[0041] Specifically, referring to Figure 1 、 Figure 2 and Figure 3 As shown, the garbage stirring assembly 4 includes a plurality of stirring plates 41 disposed on the outer periphery of the rotating cylinder 2.

[0042] Optionally, the upper end of the stirring plate 41 is fixedly connected to the top plate of the rotating cylinder 2 through an upper connecting bar 42, and the lower end is fixedly connected to the bottom plate of the rotating cylinder 2 through a lower connecting bar 43.

[0043] Referring to Figure 2, preferably, the stirring plate 41 includes a flat plate portion 411 located inside and a bent portion 412 located outside; the included angle B between the connecting line of the inner side edge of the flat plate portion 411 and the axis of the rotating cylinder 2 and the plane where the flat plate portion 411 is located is 150°-160°; it can better disturb the slurry and prevent the organic matter from sinking together with the sand.

[0044] In this embodiment, a special sand scraping device is designed to avoid the accumulation of bottom sediment, improve the effective utilization space in the sedimentation device, and make the sedimentation system operate efficiently.

[0045] See Figure 1 , Figure 3 and Figure 4 , specifically, the sediment scraping device 5 includes a plurality of scraping plates 51; the cross-section of the scraping plate 51 is Z-shaped.

[0046] Preferably, the bottom of the outer cylinder 1 is V-shaped; the inlet of the sediment conveying mechanism 6 is connected to one inclined surface at the bottom of the outer cylinder 1; one end of the scraping plate 51 is connected to the rotating shaft at the bottom of the rotating cylinder 2, and the other end is provided with an inclined edge 511 adapted to the inclined surface at the bottom of the outer cylinder 1, which can scrape the sediment on the V-shaped inclined surface into the inlet of the sediment conveying mechanism 6.

[0047] Optionally, the sediment conveying mechanism 6 is an upwardly inclined sealed screw conveyor.

[0048] Preferably, a sand outlet 61 is provided at the top of the sealed screw conveyor, and the height of the sand outlet 61 is higher than the liquid level height in the outer cylinder 1; it can maintain the liquid level height in the flow field 3.

[0049] All the devices (components without specific structures described) selected in this application are common standard parts or parts known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or by conventional experimental methods.

[0050] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0051] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] Taking the above-mentioned ideal embodiment of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A device for removing sand from kitchen waste, characterized in that, Comprising: A rotating cylinder (2) disposed inside an outer cylinder (1); a flow field (3) is formed between the outer wall of the rotating cylinder (2) and the inner wall of the outer cylinder (1); a feed port (11) communicating with the flow field (3) is provided on the top plate of the outer cylinder (1), and a discharge port (12) communicating with the flow field (3) is provided on the side wall of the outer cylinder (1); the connecting line between the feed port (11) and the axis of the rotating cylinder (2) is L1, and the connecting line between the discharge port (12) and the axis of the rotating cylinder (2) is L2. Among them, along the direction opposite to the rotation direction of the rotating cylinder (2), the central angle A formed by L1 and L2 is 30°-45°; A garbage stirring assembly (4) disposed on the outer periphery of the rotating cylinder (2) for stirring the garbage in the flow field (3); A sand scraping device (5) disposed on the rotating shaft at the bottom of the rotating cylinder (2) for scraping the sand into the sand conveying mechanism (6) at the lower part of the outer cylinder (1); and A driving device (7) disposed on the top of the outer cylinder (1) for driving the rotating cylinder (2) to rotate.

2. The kitchen waste sand removal device according to claim 1, wherein The garbage stirring assembly (4) includes a plurality of stirring plates (41) disposed on the outer periphery of the rotating cylinder (2).

3. The kitchen waste sand removal device according to claim 2, wherein The upper end of the stirring plate (41) is fixedly connected to the top plate of the rotating cylinder (2) through an upper connecting strip (42), and the lower end is fixedly connected to the bottom plate of the rotating cylinder (2) through a lower connecting strip (43).

4. The kitchen waste sand removal device according to claim 3, wherein The stirring plate (41) includes an inner flat plate portion (411) and an outer bent portion (412); The connecting line between the inner side edge of the flat plate portion (411) and the axis of the rotating cylinder (2) is L3, and the angle B between L3 and the plane where the flat plate portion (411) is located is 150°-160°.

5. The kitchen waste sand removal device according to claim 1, wherein The sand scraping device (5) includes a plurality of scraping plates (51); The cross section of the scraping plate (51) is Z-shaped.

6. The kitchen waste sand removal device according to claim 5, wherein The bottom of the outer cylinder (1) is V-shaped; The inlet of the sand conveying mechanism (6) is connected to one inclined surface at the bottom of the outer cylinder (1); One end of the scraping plate (51) is connected to the rotating shaft at the bottom of the rotating cylinder (2), and the other end is provided with an inclined edge (511) adapted to the inclined surface at the bottom of the outer cylinder (1).

7. The kitchen waste sand removal device according to claim 1, wherein The sand conveying mechanism (6) is an upwardly inclined sealed screw conveyor.

8. The kitchen waste sand removal device according to claim 7, wherein The top of the sealed screw conveyor is provided with a sand outlet (61), and the height of the sand outlet (61) is higher than the liquid level height inside the outer cylinder (1).

Images