Three-stage oil-water separation grease trap for kitchen waste

By designing a three-stage oil-water separation tank, oil-water separation is achieved using the principles of baffles and communicating vessels, solving the secondary pollution and installation difficulties of traditional devices, and realizing efficient and stable oil-water separation.

CN224377738UActive Publication Date: 2026-06-19侯方侠
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
侯方侠
Filing Date
2025-04-08
Publication Date
2026-06-19

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Abstract

The utility model discloses a kind of kitchen waste three-stage oil-water separation oil separation tank, it is related to oil-water separation technical field, including separation mechanism, the outer surface of separation mechanism is provided with supporting mechanism, the top surface of supporting mechanism is provided with closed mechanism.The utility model adds kitchen waste oil-water mixture into the first stage in separation tank by inlet pipe, oil-water mixture is accumulated in the first stage, residue in oil-water mixture sinks in the bottom of first stage due to gravity, because the density of oil is lower than the density of water, oil and water will be separated due to gravity in the accumulation process, when the liquid level height of oil-water mixture inside the first stage exceeds the height of baffle one, oil-water mixture after preliminary separation overflows the first stage and flows into the second stage, filter screen is connected with separation tank to filter oil-water mixture entering the second stage, oil-water mixture continues to separate due to gravity after entering the second stage.
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Description

Technical Field

[0001] This utility model relates to the field of oil-water separation technology, specifically to a three-stage oil-water separation grease trap for kitchen waste. Background Technology

[0002] Kitchen waste, commonly known as swill, consists of food scraps, food processing waste, and waste cooking oil generated in the daily lives of residents and the production and operation activities of food producers and operators. It is an important component of urban household waste.

[0003] Since the oil in food waste can be recycled and reused, for example, to produce fuel oil, it is meaningful to separate the oil from the water in food waste. However, traditional oil-water separators have the following shortcomings:

[0004] 1. Traditional oil-water separation devices use chemical reagents to treat oil and water, which may cause secondary pollution.

[0005] 2. Traditional oil-water separation devices mainly use dewatering tanks and pools. If graded treatment is required, large storage containers are generally needed, which is difficult to meet the requirements of catering kitchens in terms of drainage flow, sewer pipe connection and space installation conditions. Utility Model Content

[0006] The purpose of this invention is to provide a three-stage oil-water separation tank for kitchen waste to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A three-stage oil-water separation grease trap for kitchen waste includes a separation mechanism, a support mechanism on the outer surface of the separation mechanism, and a sealing mechanism on the top surface of the support mechanism.

[0009] The separation mechanism includes a separation box. A fixed pipe is fixedly connected to one side of the bottom surface of the inner cavity of the separation box. A partition is fixedly connected to the top surface of the fixed pipe. A fixed pipe is fixedly connected to the top surface of the partition. A filter screen is fixedly connected to the top surface of the fixed pipe. The partition, the fixed pipe, and the filter screen are fixedly connected to the separation box. A fixed pipe is fixedly connected to one side of the inner cavity of the separation box. The fixed pipe is located below the side of the inner cavity of the separation box. A partition is fixedly connected to the top surface of the fixed pipe. A fixed pipe is fixedly connected to the top surface of the partition. The partition and the fixed pipe are fixedly connected to the separation box.

[0010] A further improvement of this utility model is that: a water inlet pipe is fixedly connected to the upper inside of the side of the separation box, and a drain cylinder is fixedly connected to the upper inside of the other side of the separation box, and the number of drain cylinders is two.

[0011] A further improvement of the present invention is that: a first drain pipe is movably installed inside the drain cylinder, a tee pipe is fixedly connected to one end of the first drain pipe, a second drain pipe is fixedly connected to one end of the tee pipe, and one end of the second drain pipe is located at the bottom of the inner cavity of the separation box.

[0012] A further improvement of the present invention is that the support mechanism includes a square tube frame one and a square tube frame two. The square tube frame one is fixedly connected to the bottom of the outer surface of the separation box, and the square tube frame two is fixedly connected to the top of the outer surface of the separation box. A connecting pipe is fixedly connected to the top surface of the square tube frame one. The number of connecting pipes is six and they are evenly distributed on the top surface of the square tube frame one. The connecting pipes are fixedly connected to the square tube frame two.

[0013] A further improvement of the present invention is that the closing mechanism includes a rotating frame, and there are two rotating frames. The two rotating frames are rotatably connected to one side of the top surface of the square tube frame II by hinges. A handle is fixedly connected to the outer surface of the rotating frame, and a cover plate is fixedly connected to the top surface of the rotating frame.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a three-stage oil-water separation tank for kitchen waste. It employs a separation mechanism, a separation box, a first fixed pipe, a first partition, a second fixed pipe, a filter screen, a third fixed pipe, a second partition, a fourth fixed pipe, a water inlet pipe, a drain cylinder, a first drain pipe, a tee pipe, and a second drain pipe. The separation box is divided into three stages by the connection of the first and second partitions. Before use, an appropriate amount of water is added to each of the three stages. The second and third stages are interconnected. According to the principle of communicating vessels, the water levels in the second and third stages are equal. The kitchen waste oil-water mixture is added to the first stage of the separation box through the water inlet pipe. The oil-water mixture accumulates in the first stage, and the residue in the oil-water mixture sinks to the bottom of the first stage due to gravity. Because oil is denser than water... Due to the low density, the oil and water mixture will initially separate due to gravity during the accumulation process. When the liquid level of the oil-water mixture in the first stage exceeds the height of the first baffle, the initially separated oil-water mixture overflows from the first stage and flows into the second stage. The filter screen is connected to the separation box to filter the oil-water mixture entering the second stage, preventing the residue floating on the surface of the oil-water mixture from entering the second stage. After entering the second stage, the oil-water mixture continues to separate due to gravity. The second baffle blocks the separated oil layer in the second stage. Because the second and third stages are internally connected, when the liquid level in the second and third stages exceeds the height of the first drain pipe, the water in the third stage is discharged from the separation box through the second drain pipe, the tee pipe, and the first drain pipe, thereby preventing the oil-water mixture from overflowing from the separation box and improving the adaptability of the device.

[0016] 2. This utility model provides a three-stage oil-water separation tank for kitchen waste, which adopts a supporting mechanism, square tube frame one, square tube frame two, and connecting pipes. Square tube frame one and square tube frame two are connected and fixed by six connecting pipes. Square tube frame one and square tube frame two are respectively fixed to the bottom and top of the outer surface of the separation box. Square tube frame one and square tube frame two are connected to the separation box by six connecting pipes to support the separation box, improve the structural stability of the separation box, and improve the adaptability of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the separation mechanism of this utility model;

[0019] Figure 3 This is a partial structural diagram of the separation mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the support mechanism structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the closed mechanism structure of this utility model.

[0022] In the diagram: 1. Separation mechanism; 2. Support mechanism; 3. Closing mechanism; 101. Separation box; 102. Fixed pipe one; 103. Partition one; 104. Fixed pipe two; 105. Filter screen; 106. Fixed pipe three; 107. Partition two; 108. Fixed pipe four; 109. Water inlet pipe; 110. Drain cylinder; 111. Drain pipe one; 112. T-joint pipe; 113. Drain pipe two; 201. Square tube frame one; 202. Square tube frame two; 203. Connecting pipe; 301. Rotating frame; 302. Handle; 303. Cover plate. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] Example 1

[0025] like Figure 1-5 As shown, this utility model provides a three-stage oil-water separation grease trap for kitchen waste, including a separation mechanism 1, a support mechanism 2 on the outer surface of the separation mechanism 1, and a sealing mechanism 3 on the top surface of the support mechanism 2. The separation mechanism 1 includes a separation box 101, a fixing pipe 102 fixedly connected to one side of the bottom surface of the inner cavity of the separation box 101, a partition 103 fixedly connected to the top surface of the fixing pipe 102, a fixing pipe 2 104 fixedly connected to the top surface of the partition 103, and a filter screen 105 fixedly connected to the top surface of the fixing pipe 2 104. The partition 103, the fixing pipe 2 104, and the filter screen 105 are fixedly connected to the separation box 101. A fixing pipe 3 106 is fixedly connected to one side of the inner cavity of the separation box 101. 106 is located below the inner side of the separation box 101. The top surface of the fixed pipe 106 is fixedly connected to the partition 2 107. The top surface of the partition 2 107 is fixedly connected to the fixed pipe 4 108. The partition 2 107 and the fixed pipe 4 108 are fixedly connected to the separation box 101. The upper inner side of the separation box 101 is fixedly connected to the water inlet pipe 109. The upper inner side of the other side of the separation box 101 is fixedly connected to the drain cylinder 110. There are two drain cylinders 110. The drain pipe 111 is movably installed inside the drain cylinder 110. One end of the drain pipe 111 is fixedly connected to the tee pipe 112. One end of the tee pipe 112 is fixedly connected to the drain pipe 2 113. One end of the drain pipe 2 113 is located at the bottom of the inner cavity of the separation box 101.

[0026] In this embodiment, the separation box 101 is divided into three stages by connecting partition 103 and partition 107 to the separation box 101. Fixed pipes 102 and 104 are connected to the separation box 101 and partition 103 respectively to improve the stability of partition 103. Fixed pipes 106 and 108 are connected to the separation box 101 and partition 107 respectively to improve the stability of partition 107. A suitable amount of water is added to the three stages inside the separation box 101. The second and third stages inside the separation box 101 are interconnected. According to the principle of communicating vessels, the water levels in the second and third stages of the separation box 101 are equal. A mixture of kitchen waste oil and water is added to the first stage of the separation box 101 through the water inlet pipe 109. The oil and water mixture accumulates in the first stage, and the residue in the oil and water mixture sinks to the bottom of the first stage due to gravity. Due to the density of oil... Since the density of water is lower than that of water, the oil and water mixture will initially separate due to gravity during the accumulation process. When the liquid level of the oil and water mixture in the first stage exceeds the height of the partition 103, the initially separated oil and water mixture overflows from the first stage and flows into the second stage. The filter screen 105 is connected to the separation box 101 to filter the oil and water mixture entering the second stage, preventing the residue floating on the surface of the oil and water mixture from entering the second stage. After entering the second stage, the oil and water mixture continues to separate due to gravity. The partition 107 blocks the separated oil layer in the second stage. Since the second and third stages are internally connected, when the liquid level of water in the second and third stages exceeds the height of the drain pipe 111, the water in the third stage is discharged from the separation box 101 through the drain pipe 113, the three-way pipe 112, and the drain pipe 111, thereby preventing the oil and water mixture from overflowing from the separation box 101.

[0027] Example 2

[0028] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the support mechanism 2 includes a square tube frame 1 201 and a square tube frame 202. The square tube frame 1 201 is fixedly connected to the bottom of the outer surface of the separation box 101, and the square tube frame 202 is fixedly connected to the top of the outer surface of the separation box 101. A connecting pipe 203 is fixedly connected to the top surface of the square tube frame 1 201. There are six connecting pipes 203, which are evenly distributed on the top surface of the square tube frame 1 201. The connecting pipes 203 are fixedly connected to the square tube frame 202.

[0029] In this embodiment, six connecting pipes 203 are used to connect and fix square tube frame one 201 and square tube frame two 202. Square tube frame one 201 and square tube frame two 202 are respectively fixed to the bottom and top of the outer surface of the separation box 101. Square tube frame one 201 and square tube frame two 202 are connected to the separation box 101 through six connecting pipes 203 to support the separation box 101 and improve the structural stability of the separation box 101.

[0030] Example 3

[0031] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the closing mechanism 3 includes a rotating frame 301, and there are two rotating frames 301. The two rotating frames 301 are rotatably connected to one side of the top surface of the square tube frame 202 by hinges. A handle 302 is fixedly connected to the outer surface of the rotating frame 301, and a cover plate 303 is fixedly connected to the top surface of the rotating frame 301.

[0032] In this embodiment, the separation box 101 is sealed by connecting two rotating frames 301 to two handles 302 and a cover plate 303 respectively. When it is necessary to retrieve the separated oil layer in the separation box 101, the two handles 302 are pulled to rotate the two rotating frames 301 and the cover plate 303 to open the top of the separation box 101, so that workers can retrieve the oil layer in the separation box 101.

[0033] The working principle of this three-stage oil-water separation grease trap for kitchen waste will be explained in detail below.

[0034] like Figure 1-5As shown, six connecting pipes 203 connect and fix square tube frame one 201 and square tube frame two 202. Square tube frame one 201 and square tube frame two 202 are connected to the separation box 101 to support the separation box 101 and improve the structural stability of the separation box 101. Partition one 103 and partition two 107 are connected to the separation box 101 to divide the interior of the separation box 101 into three levels. Fixing pipe one 102 and fixing pipe two 104 are connected to the separation box 101 and partition one 103 respectively to improve the stability of partition one 103. Fixing pipe three 106 and fixing pipe two 104 are connected to the separation box 101 and partition one 103 respectively to improve the stability of partition one 103. Four 108 is connected to the separation box 101 and the second partition 107 respectively to improve the stability of the second partition 107. A suitable amount of water is added to the three stages inside the separation box 101. The second and third stages inside the separation box 101 are interconnected. According to the principle of communicating vessels, the water levels in the second and third stages of the separation box 101 are equal. The kitchen waste oil-water mixture is added to the first stage of the separation box 101 through the water inlet pipe 109. The oil-water mixture accumulates in the first stage, and the residue in the oil-water mixture sinks to the bottom of the first stage due to gravity. Because oil has a higher density than... Water has a low density, and during the accumulation of the oil-water mixture, the oil and water will initially separate due to gravity. When the liquid level of the oil-water mixture in the first stage exceeds the height of the baffle 103, the initially separated oil-water mixture overflows from the first stage and flows into the second stage. The filter screen 105 is connected to the separation box 101 to filter the oil-water mixture entering the second stage, preventing residue floating on the surface of the oil-water mixture from entering the second stage. After entering the second stage, the oil-water mixture continues to separate due to gravity, and the baffle 107 blocks the separated oil layer in the second stage. Because the second and third stages are internally connected, when the water level in the second and third stages exceeds the height of the drain pipe 111, the water in the third stage is discharged from the separator 101 through the drain pipe 2 113, the tee pipe 112, and the drain pipe 111, thus preventing the oil-water mixture from overflowing from the separator 101. When it is necessary to retrieve the separated oil layer in the separator 101, pull the two handles 302 to drive the two rotating frames 301 and the cover plate 303 to rotate and open the top of the separator 101, making it convenient for workers to retrieve the oil layer in the separator 101.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A three-stage oil-water separation grease trap for kitchen waste, comprising a separation mechanism (1), characterized in that: The outer surface of the separation mechanism (1) is provided with a support mechanism (2), and the top surface of the support mechanism (2) is provided with a closing mechanism (3). The separation mechanism (1) includes a separation box (101). A fixed pipe (102) is fixedly connected to one side of the bottom surface of the inner cavity of the separation box (101). A partition (103) is fixedly connected to the top surface of the fixed pipe (102). A fixed pipe (104) is fixedly connected to the top surface of the partition (103). A filter screen (105) is fixedly connected to the top surface of the fixed pipe (104). The partition (103), the fixed pipe (104), and the filter screen (105) are connected to the separation box (101). The separation box (101) is fixedly connected, and a fixing pipe three (106) is fixedly connected to one side of the inner cavity of the separation box (101). The fixing pipe three (106) is located below the inner cavity of the separation box (101). A partition two (107) is fixedly connected to the top surface of the fixing pipe three (106). A fixing pipe four (108) is fixedly connected to the top surface of the partition two (107). The partition two (107) and the fixing pipe four (108) are fixedly connected to the separation box (101).

2. The three-stage oil-water separation grease trap for kitchen waste according to claim 1, characterized in that: A water inlet pipe (109) is fixedly connected to the upper inside of the side of the separation box (101), and a drain cylinder (110) is fixedly connected to the upper inside of the other side of the separation box (101). There are two drain cylinders (110).

3. The three-stage oil-water separation grease trap for kitchen waste according to claim 2, characterized in that: The drain cylinder (110) is equipped with a drain pipe (111) that is movably installed inside. One end of the drain pipe (111) is fixedly connected to a three-way pipe (112), and one end of the three-way pipe (112) is fixedly connected to a drain pipe (113). One end of the drain pipe (113) is located at the bottom of the inner cavity of the separation box (101).

4. The three-stage oil-water separation grease trap for kitchen waste according to claim 3, characterized in that: The support mechanism (2) includes a square tube frame one (201) and a square tube frame two (202). The square tube frame one (201) is fixedly connected to the bottom of the outer surface of the separation box (101), and the square tube frame two (202) is fixedly connected to the top of the outer surface of the separation box (101). A connecting pipe (203) is fixedly connected to the top surface of the square tube frame one (201). There are six connecting pipes (203) and they are evenly distributed on the top surface of the square tube frame one (201). The connecting pipes (203) are fixedly connected to the square tube frame two (202).

5. A three-stage oil-water separation grease trap for kitchen waste according to claim 4, characterized in that: The closing mechanism (3) includes a rotating frame (301), and there are two rotating frames (301). The two rotating frames (301) are rotatably connected to one side of the top surface of the square tube frame (202) by hinges. A handle (302) is fixedly connected to the outer surface of the rotating frame (301), and a cover plate (303) is fixedly connected to the top surface of the rotating frame (301).