A three-phase separator for kitchen waste

Abstract

This utility model discloses a three-phase separator for kitchen wastewater, relating to the field of kitchen wastewater treatment technology. It includes a first cylinder, a solid-liquid separation component, a first discharge pipe, and a second discharge pipe. The upper end of the first cylinder is open. The solid-liquid separation component is disposed on the open side of the first cylinder, and its outlet is connected to the interior of the first cylinder. The first discharge pipe is connected to the interior of the first cylinder and is equipped with a valve. One end of the second discharge pipe is connected to the interior of the first cylinder, and the other end extends away from the bottom of the first cylinder, causing the liquid flow in the second discharge pipe to be upward. This three-phase separator for kitchen wastewater can more conveniently separate wastewater, grease, and residue from kitchen wastewater.

Description

Technical Field

[0001] This utility model relates to the field of kitchen waste treatment technology, and in particular to a three-phase separator for kitchen waste. Background Technology

[0002] Food waste refers to food scraps, leftover food products, food processing waste, and inedible animal and vegetable oils and various oil-water mixtures generated in daily life by households, schools, government agencies, public canteens, and the catering industry. Currently, food waste is often treated centrally. The conventional method in centralized treatment is to directly ferment and compost the food waste and oil-water mixtures, which is inefficient and has a low degree of recycling. To further utilize food waste, pretreatment is necessary, including solid-liquid separation followed by oil-water separation, using different processes to treat the separated materials for targeted recycling. However, oil-water separation of food waste is complex and cannot be completed simply and efficiently in one step. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a three-phase separator for kitchen wastewater, which can more conveniently separate wastewater, grease, and residue from kitchen wastewater.

[0004] According to an embodiment of the present utility model, a three-phase separator for kitchen waste includes: a first cylinder with an opening at the upper end; A solid-liquid separation component is disposed on the open side of the first cylinder, and the liquid outlet of the solid-liquid separation component is connected to the interior of the first cylinder. A first discharge pipe is connected to the interior of the first cylinder, and a valve is provided on the first discharge pipe; The second discharge pipe has one end connected to the interior of the first cylinder, and the other end extends away from the bottom of the first cylinder, so that the liquid in the second discharge pipe flows upward.

[0005] The three-phase separator for kitchen waste according to this utility model embodiment has at least the following beneficial effects: the solid-liquid separation component is set on the open side of the first cylinder. When kitchen waste is poured into the solid-liquid separation component, the solids of the kitchen waste are intercepted by the solid-liquid separation component, and the liquid enters the first cylinder, completing the first separation. The liquid of the kitchen waste accumulates in the first cylinder, and the liquid level gradually rises. At the same time, the wastewater and grease in the liquid gradually separate into layers. According to the principle of communicating vessels, when the liquid level in the first cylinder rises, the liquid level entering the second discharge pipe also rises synchronously. When the liquid level in the second discharge pipe reaches the highest point of the second discharge pipe, the liquid in the second discharge pipe begins to be discharged by gravity, and the lower layer of liquid in the first cylinder begins to be discharged from the second discharge pipe. After waiting for a certain period of time, the valve of the first discharge pipe is opened to discharge the upper layer of liquid in the first cylinder, completing the second separation.

[0006] According to some embodiments of the present invention, the second discharge pipe includes a first section, a second section, and a third section connected in sequence. The first section communicates with the interior of the first cylinder, the second section is located above the first section, and the third section is located below the second section, such that the liquid flow of the second discharge pipe is first upward and then downward.

[0007] According to some embodiments of the present invention, the first segment is connected to the first discharge pipe, and the connection point between the first segment and the first discharge pipe is located between the inlet of the first discharge pipe and the valve; the third segment is connected to the first discharge pipe, and the connection point between the third segment and the first discharge pipe is located between the outlet of the first discharge pipe and the valve.

[0008] According to some embodiments of the present invention, the solid-liquid separation assembly includes a second cylinder with an opening at the upper end and a plurality of through holes at the bottom. The second cylinder is inserted into the opening side of the first cylinder, and the bottom of the second cylinder is higher than the uppermost end of the second discharge pipe.

[0009] According to some embodiments of the present invention, the bottom of the second cylinder is provided with a plurality of strip-shaped holes, and the plurality of strip-shaped holes are distributed in parallel to each other.

[0010] According to some embodiments of the present invention, the cross-section of the first cylinder gradually decreases from the opening side of the first cylinder toward the bottom, making the first cylinder conical; the cross-section of the second cylinder gradually decreases from the opening side of the second cylinder toward the bottom, making the second cylinder conical; the second cylinder is inserted into the first cylinder, and the outer wall of the second cylinder is in contact with and fixed to the inner wall of the first cylinder.

[0011] According to some embodiments of the present invention, a baffle is provided on the opening side of the second cylinder, the baffle is arc-shaped, and the central axis of the baffle is collinear with the central axis of the second cylinder.

[0012] According to some embodiments of the present invention, the curvature of the baffle is a, and 3 / 4π≤a≤π.

[0013] According to some embodiments of the present invention, the first cylinder is provided with a heating component, which is located inside the first cylinder.

[0014] According to some embodiments of the present invention, the first cylinder is provided with a level gauge.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the three-phase separator for kitchen waste in an embodiment of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the three-phase separator for kitchen waste water according to an embodiment of this utility model; Figure 3 This is an exploded view of the three-phase separator for kitchen waste in an embodiment of this utility model.

[0017] Icon labels: First cylinder 100, solid-liquid separation component 200, second cylinder 210, baffle 220, first discharge pipe 300, valve 310, second discharge pipe 400. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] As described in the background section, most existing methods for treating kitchen waste directly process food waste and mixtures of oil and water, such as biological fermentation composting. These methods fail to effectively utilize or treat the liquid components in the kitchen waste. Separating the solids, wastewater, and grease from the kitchen waste can improve its treatment efficiency and effectiveness.

[0023] For example, after solid-liquid separation, the solids in food wastewater are more concentrated, which is beneficial for the activity and reproduction of microorganisms during bio-fermentation composting, thus improving fermentation efficiency. Separating oils from wastewater in the liquid phase of food wastewater can reduce the processing pressure on wastewater treatment equipment; the oils can be converted into biodiesel through chemical or biological processes, or undergo other regeneration treatments.

[0024] Reference Figure 1 As shown, an embodiment of the present invention provides a three-phase separator for kitchen waste, comprising a first cylinder 100, a solid-liquid separation component 200, a first discharge pipe 300, and a second discharge pipe 400.

[0025] The upper end of the first cylinder 100 is open; the solid-liquid separation component 200 is disposed on the open side of the first cylinder 100, and the liquid outlet of the solid-liquid separation component 200 is connected to the interior of the first cylinder 100; the first discharge pipe 300 is connected to the interior of the first cylinder 100, and the first discharge pipe 300 is provided with a valve 310; one end of the second discharge pipe 400 is connected to the interior of the first cylinder 100, and the other end of the second discharge pipe 400 extends in a direction away from the bottom of the first cylinder 100, so that the liquid flow of the second discharge pipe 400 is upward.

[0026] A solid-liquid separation component 200 is installed on the open side of the first cylinder 100. When kitchen waste is poured into the solid-liquid separation component 200, the solids are retained by the component, while the liquid enters the first cylinder 100, completing the first separation. The liquid of the kitchen waste accumulates in the first cylinder 100, and the liquid level gradually rises. At the same time, the wastewater and grease in the liquid gradually separate into layers. According to the principle of communicating vessels, when the liquid level in the first cylinder 100 rises, the liquid level entering the second discharge pipe 400 also rises synchronously. When the liquid level in the second discharge pipe 400 reaches its highest point, the liquid in the second discharge pipe 400 begins to be discharged due to gravity, and the lower layer of liquid in the first cylinder 100 begins to be discharged from the second discharge pipe 400. After a certain period of time, the valve 310 of the first discharge pipe 300 is opened to discharge the upper layer of liquid in the first cylinder 100, completing the second separation.

[0027] It's important to understand that wastewater is denser than grease, so the upper layer of liquid in the first cylinder 100 is grease, and the lower layer is wastewater. After the kitchen wastewater is separated by the solid-liquid separation component 200, the liquid is initially a mixture of wastewater and grease upon entering the first cylinder 100. Therefore, the lower layer of liquid cannot be directly discharged through the second discharge pipe 400 at this stage. The other end of the second discharge pipe 400 extends away from the bottom of the first cylinder 100, causing the liquid to flow upwards. Utilizing the principle of communicating vessels, this allows sufficient time for the liquid in the first cylinder 100 to separate into layers while the liquid level rises. Once the liquid in the first cylinder 100 has separated into layers—the upper layer being grease and the lower layer being wastewater—the liquid level in the second discharge pipe 400 reaches its highest point. The liquid can then either be discharged directly from the second discharge pipe 400 or continue flowing downwards.

[0028] The second discharge pipe 400 begins to discharge wastewater from the first cylinder 100, and the liquid level in the first cylinder 100 begins to drop. After a certain period of time, the wastewater in the first cylinder 100 is basically drained. At this time, the valve 310 of the first discharge pipe 300 can be opened to start discharging grease from the first discharge pipe 300.

[0029] Based on daily experience, the liquid component of kitchen wastewater accounts for approximately 85%, with the remainder being grease. Therefore, based on experience, the waiting time required when discharging wastewater through the second discharge pipe 400 can be determined. Valve 310 should be opened to begin discharging grease only after the wastewater has been largely drained.

[0030] It is understood that the second discharge pipe 400 includes a first section, a second section and a third section connected in sequence. The first section is connected to the interior of the first cylinder 100, the second section is located above the first section and the third section is located below the second section, so that the liquid flow of the second discharge pipe 400 is first upward and then downward.

[0031] The second section of the second discharge pipe 400 is the highest point of the second discharge pipe 400. When the liquid level in the second discharge pipe 400 reaches the second section, the liquid continues to flow into the third section. The liquid moves downward under the action of gravity and creates a negative pressure cavitation in the second section. The liquid in the first and second sections will be quickly replenished, and finally the second discharge pipe 400 can continuously discharge liquid.

[0032] Reference Figure 2 As shown, it can be understood that the first segment is connected to the first discharge pipe 300, and the connection point between the first segment and the first discharge pipe 300 is located between the inlet of the first discharge pipe 300 and the valve 310. The third segment is connected to the first discharge pipe 300, and the connection point between the third segment and the first discharge pipe 300 is located between the outlet of the first discharge pipe 300 and the valve 310.

[0033] In this structure, after the second discharge pipe 400 has basically drained the wastewater, the valve 310 on the first discharge pipe 300 is opened, and the first and third sections of the second discharge pipe 400 are connected. The grease in the first cylinder 100 can be discharged directly from the first discharge pipe 300 without having to flow upward and then downward along the second discharge pipe 400.

[0034] It is understood that the solid-liquid separation assembly 200 includes a second cylinder 210, the upper end of the second cylinder 210 is open, the bottom of the second cylinder 210 is provided with multiple through holes, the second cylinder 210 is inserted into the open side of the first cylinder 100, and the bottom of the second cylinder 210 is higher than the uppermost end of the second discharge pipe 400.

[0035] Kitchen wastewater is poured into the second cylinder 210. Solids in the kitchen wastewater are trapped at the bottom of the second cylinder 210, while the liquid portion continues to flow from the through-hole at the bottom of the second cylinder 210 into the first cylinder 100. The bottom of the second cylinder 210 is higher than the top of the second discharge pipe 400. The wastewater in the first cylinder 100 can only be discharged from the second discharge pipe 400 when the liquid level in the first cylinder 100 rises to the highest point of the second discharge pipe 400. At this time, the liquid level in the first cylinder 100 will not submerge the bottom of the second cylinder 210.

[0036] Understandably, the bottom of the second cylinder 210 is provided with multiple strip-shaped holes, which are distributed in parallel to each other.

[0037] The slotted holes are designed to trap solids in kitchen swill while allowing liquids to flow through. Generally, solids larger than the width of the slotted holes can be trapped. Even long, thin solids will be blocked from passing through if they are not parallel to the holes.

[0038] Understandably, the cross-section of the first cylinder 100 gradually decreases from the opening side of the first cylinder 100 toward the bottom, making the first cylinder 100 conical. The cross-section of the second cylinder 210 gradually decreases from the opening side of the second cylinder 210 toward the bottom, making the second cylinder 210 conical. The second cylinder 210 is inserted into the first cylinder 100, and the outer wall of the second cylinder 210 contacts and is fixed to the inner wall of the first cylinder 100.

[0039] Both the first cylindrical body 100 and the second cylindrical body 210 are conical. When the second cylindrical body 210 is inserted into the first cylindrical body 100 and pressed down towards the bottom of the first cylindrical body 100, at a certain position, the upper part of the second cylindrical body 210 exactly matches the lower part of the first cylindrical body 100, so that the outer wall of the second cylindrical body 210 contacts and is fixed to the inner wall of the first cylindrical body 100. In this structure, it is also easy to remove the second cylindrical body 210 from the first cylindrical body 100; simply move the second cylindrical body 210 in the opposite direction to the first cylindrical body 100 and pull it out.

[0040] Reference Figure 3 As shown, it can be understood that a baffle 220 is provided on the opening side of the second cylinder 210. The baffle 220 is arc-shaped, and the central axis of the baffle 220 is collinear with the central axis of the second cylinder 210.

[0041] When pouring kitchen waste into the second cylinder 210, the baffle 220 on the open side of the second cylinder 210 effectively prevents the kitchen waste from splashing out. It can be understood that the curvature of the baffle 220 is 'a', and 3 / 4π ≤ a ≤ π. The baffle 220, satisfying this curvature range, is essentially a semi-circular arc. The opposite side of the baffle 220 is used for pouring kitchen waste, while simultaneously maximizing the shielding surface.

[0042] It is understandable that the first cylinder 100 is equipped with a heating component, which is located inside the first cylinder 100.

[0043] If there is too much animal fat in the kitchen swill, the separated fat will easily solidify in a low-temperature environment. A heating element is installed inside the first cylinder 100 to heat the liquid inside, preventing the fat from solidifying and becoming difficult to drain. It should be understood that the heating element can use a resistance heating component, such as an electric heating wire or a ceramic heating coil.

[0044] Understandably, the first cylinder 100 is equipped with a level gauge to facilitate observation of the liquid level inside the first cylinder 100.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A three-phase separator for kitchen swill, characterized in that, include: The first cylindrical body (100) has an opening at its upper end; A solid-liquid separation component (200) is provided on the opening side of the first cylinder (100), and the liquid outlet of the solid-liquid separation component (200) is connected to the interior of the first cylinder (100). The first discharge pipe (300) is connected to the interior of the first cylinder (100), and the first discharge pipe (300) is equipped with a valve (310). The second discharge pipe (400) has one end connected to the interior of the first cylinder (100) and the other end extending in a direction away from the bottom of the first cylinder (100), so that the liquid flow of the second discharge pipe (400) is upward.

2. The kitchen swill three-phase separator according to claim 1, characterized in that, The second discharge pipe (400) includes a first section, a second section and a third section connected in sequence. The first section communicates with the interior of the first cylinder (100), the second section is located above the first section, and the third section is located below the second section, so that the liquid flow of the second discharge pipe (400) is first upward and then downward.

3. The kitchen swill three-phase separator according to claim 2, characterized in that, The first segment is connected to the first discharge pipe (300), and the connection point between the first segment and the first discharge pipe (300) is located between the inlet of the first discharge pipe (300) and the valve (310). The third segment is connected to the first discharge pipe (300), and the connection point between the third segment and the first discharge pipe (300) is located between the outlet of the first discharge pipe (300) and the valve (310).

4. The kitchen swill three-phase separator according to claim 1, characterized in that, The solid-liquid separation assembly (200) includes a second cylinder (210), the upper end of the second cylinder (210) is open, the bottom of the second cylinder (210) is provided with a plurality of through holes, the second cylinder (210) is inserted into the opening side of the first cylinder (100), and the bottom of the second cylinder (210) is higher than the uppermost end of the second discharge pipe (400).

5. The kitchen swill three-phase separator according to claim 4, characterized in that, The bottom of the second cylinder (210) is provided with a plurality of strip-shaped holes, which are distributed in parallel to each other.

6. The kitchen swill three-phase separator according to claim 5, characterized in that, The cross-section of the first cylinder (100) gradually narrows from the opening side of the first cylinder (100) toward the bottom, making the first cylinder (100) conical. The cross-section of the second cylinder (210) gradually narrows from the opening side of the second cylinder (210) toward the bottom, making the second cylinder (210) conical. The second cylinder (210) is inserted into the first cylinder (100), and the outer wall of the second cylinder (210) is in contact with and fixed to the inner wall of the first cylinder (100).

7. The kitchen swill three-phase separator according to claim 4, characterized in that, The second cylinder (210) has a baffle (220) on its open side. The baffle (220) is arc-shaped and its central axis is collinear with the central axis of the second cylinder (210).

8. The kitchen swill three-phase separator according to claim 7, characterized in that, The radius of the baffle (220) is a, and 3 / 4π≤a≤π.

9. The kitchen swill three-phase separator according to claim 1, characterized in that, The first cylinder (100) is provided with a heating assembly, which is located in the interior of the first cylinder (100).

10. The kitchen swill three-phase separator according to claim 1, characterized in that, The first cylinder (100) is provided with a liquid level meter.

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