A colloid removal device for refining biodiesel from waste oil

Abstract

The utility model discloses a colloid removal device for refining biodiesel from waste cooking oil, belonging to the technical field of biodiesel refining; the device comprises a stirring kettle, a stirring mechanism arranged inside the stirring kettle, and a bracket supporting the stirring kettle; the lower part of the stirring kettle is funnel-shaped, the lower end of the stirring kettle is connected to a filtering bin via a connecting pipe, the filtering bin comprises an upper bin and a lower bin, the upper bin and the lower bin are connected via threads, support pins are arranged at equal angles on the inner wall of the lower bin, a filter screen is arranged above the support pins, the lower part of the lower bin is funnel-shaped, an oil drain pipe is arranged below the lower bin, by arranging the filtering bin below the stirring kettle, the stirred solution can enter the filtering bin, and then the device can process two batches of raw materials at the same time, and by arranging the filtering bin as an upper bin and a lower bin connected via threads, the filter screen of the device is easy to clean.

Description

Technical Field

[0001] The utility model provides a colloid removal device used for refining biodiesel from waste cooking oil, belonging to the technical field of biodiesel refining. Background Art

[0002] Gutter oil refers to waste oil recovered from sewers, catering waste or other sources. It contains a large amount of impurities and colloids. When using gutter oil to refine biodiesel, these impurities and colloids need to be removed to ensure the production of high-quality diesel products.

[0003] Patent No.: CN206486493U; discloses a waste oil colloid removal process device for refining biodiesel from waste oil, including a strong chelating agent and water addition port, a stirring barrel and a waste oil discharge port, the stirring barrel is installed above the supporting legs, and a colloid discharge port is provided at the center of the bottom of the stirring barrel, a first control valve is provided on the colloid discharge port, the waste oil discharge port is installed at the bottom of one side surface of the stirring barrel, and a second control valve is provided on the waste oil discharge port, a filter screen is provided at the position where the waste oil discharge port is connected to the stirring barrel, a driving motor is provided at the top of the waste oil discharge port, and a stirring paddle is provided inside the waste oil discharge port.

[0004] The above patent uses a strong chelating agent and a certain amount of water to react fully with the waste oil through stirring with a stirring paddle, thereby separating the colloid in the waste oil. The effect is very good and it is safer and cleaner than removing the colloid with concentrated sulfuric acid. However, the filter of the device is arranged in the discharge port, so when the device is in use, the precipitate produced by the mixture of the colloid and the strong chelating agent will settle at the bottom of the device. When the device discharges the waste oil, these precipitates will accumulate in front of the filter under the action of the flow of the waste oil, affecting the discharge of the waste oil. In addition, each time the device waits for the colloid to react with the strong chelating agent, it needs to stand for a period of time before adding the next batch of raw materials into the device. Therefore, the processing efficiency of the device is low. Utility Model Content

[0005] The utility model provides a colloid removal device for refining biodiesel from waste oil, which can solve the problems of low efficiency and inconvenient cleaning of the filter screen of the existing device.

[0006] In order to solve the above problems, the utility model proposes a technical solution: a colloid removal device for refining biodiesel from waste oil, comprising a stirring kettle, a stirring mechanism arranged inside the stirring kettle, and a bracket supporting the stirring kettle; the lower part of the stirring kettle is funnel-shaped, the lower end of the stirring kettle is connected to a filter bin through a connecting pipe, the filter bin comprises an upper bin and a lower bin, the upper bin and the lower bin are connected by threads, support pins are arranged at equal angles on the inner wall of the lower bin, a filter screen is arranged above the support pins, the lower part of the lower bin is funnel-shaped, and an oil discharge pipe is arranged below the lower bin;

[0007] As an improvement, the stirring mechanism includes a motor arranged in the middle of the upper part of the stirring kettle, a rotating shaft arranged in the middle of the stirring kettle, and a plurality of stirring blades arranged perpendicular to the rotating shaft, and the rotating shaft passes through the upper wall of the stirring kettle and is keyed to the output shaft of the motor;

[0008] As an improvement, the rotating shaft is connected to the upper wall of the stirring kettle through a bearing;

[0009] As an improvement, an oil inlet pipe communicating with the interior of the stirring kettle is provided on one side of the stirring kettle located at the motor, and a hinged cover plate is provided at the upper end of the oil inlet pipe;

[0010] As an improvement, valves are provided inside the connecting pipe and the oil drain pipe;

[0011] As an improvement, the volume above the filter screen in the filter bin is larger than the volume of the stirring tank;

[0012] As an improvement, the bracket is provided with two fixing plates, the upper fixing plate fixes the stirring kettle, and the lower fixing plate fixes the filtering chamber.

[0013] Beneficial effects of the utility model:

[0014] By setting a filter chamber under the stirring kettle, the stirred solution can enter the filter chamber, so that the device can process two batches of raw materials at the same time. By setting the filter chamber as a threaded upper chamber and a lower chamber, the filter screen of the device is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a colloid removal device for refining biodiesel from waste cooking oil.

[0016] Figure 2 The utility model is a schematic diagram of a stirring mechanism of a colloid removal device for refining biodiesel from waste cooking oil.

[0017] Figure 3 The utility model is a schematic diagram of the internal structure of the filter chamber of a colloid removal device for refining biodiesel from waste oil. 1. Agitator; 101. Oil inlet pipe; 102. Cover plate; 2. Agitator; 201. Motor; 202. Rotating shaft; 203. Agitator blade; 3. Bracket; 301. Fixed plate; 4. Connecting pipe; 5. Filter chamber; 501. Upper chamber; 502. Lower chamber; 503. Support pin; 504. Filter screen; 505. Oil drain pipe. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] according to Figure 1—3: The utility model provides a colloid removal device for refining biodiesel from waste cooking oil: comprising a stirring kettle 1, a stirring mechanism 2 arranged inside the stirring kettle 1, and a bracket 3 for supporting the stirring kettle 1; the lower part of the stirring kettle 1 is funnel-shaped, and the lower end of the stirring kettle 1 is connected to a filter bin 5 through a connecting pipe 4, and valves are arranged inside the connecting pipe 4 and the oil discharge pipe 505, and the filter bin 5 comprises an upper bin 501 and a lower bin 502, and the upper bin 501 and the lower bin 502 are connected by threads, and the inner wall of the lower bin 502 is provided with support pins 503 at equal angles, and a filter screen 504 is arranged above the support pins 503, and the lower bin 502 is provided with a filter screen 504. The lower part of 02 is funnel-shaped, and an oil drain pipe 505 is provided below the lower bin 502. The bracket 3 is provided with two fixing plates 301. The upper fixing plate 301 fixes the stirring kettle 1, and the lower fixing plate 301 fixes the filtering bin 5. By arranging the filtering bin 5 below the stirring kettle 1, the stirred solution can enter the filtering bin 5, so that the device can process two batches of raw materials at the same time. By arranging the filtering bin 5 into an upper bin 501 and a lower bin 502 connected by threads, the filter screen 504 of the device is easy to clean, and the valve in the connecting pipe 4 prevents the raw materials being stirred from entering the filtering bin 5.

[0020] The stirring mechanism 2 includes a motor 201 disposed in the middle of the upper part of the stirring kettle 1, a rotating shaft 202 disposed in the middle of the stirring kettle 1, and a plurality of stirring blades 203 disposed perpendicular to the rotating shaft 202. The rotating shaft 202 passes through the upper wall of the stirring kettle 1 and is keyed to the output shaft of the motor 201. The rotating shaft 202 is connected to the upper wall of the stirring kettle 1 through a bearing, so that starting the motor 201 can drive the rotating shaft 202 to rotate, thereby enabling the stirring blades 203 to stir the raw materials in the stirring kettle 1.

[0021] The stirring tank 1 is provided with an oil inlet pipe 101 on one side of the motor 201, which is connected to the inside of the stirring tank 1. The upper end of the oil inlet pipe 101 is provided with a hinged cover plate 102. After the raw materials enter the stirring tank 1 through the oil inlet pipe 101, the cover plate 102 is covered to prevent the raw materials from spilling out during stirring.

[0022] The volume above the filter screen 504 in the filter bin 5 is larger than the volume of the stirring tank 1 , so that all the raw materials in the stirring tank 1 can enter the filter bin 1 , thereby not affecting the next operation.

[0023] The principle of the utility model is as follows: when in use, the cover plate 102 is first opened, and then the waste oil and the strong chelating agent are poured into the stirring kettle 1, and then the motor 201 is started, and the motor 201 drives the rotating shaft 202 and the stirring blade 203 to rotate, and the waste oil and the strong chelating agent are stirred. After the stirring is completed, the valve in the connecting pipe 4 is opened, so that the raw materials in the stirring kettle 1 enter the filtering bin 5, and after all the raw materials enter the filtering bin 5, the valve in the connecting pipe 4 is closed, and the raw materials are added to the stirring kettle 1 again, and then the valve in the oil discharge pipe 505 is opened, and the raw materials in the filtering bin 5 will flow out from the oil discharge pipe 505 through the filter screen 504, so that the device can process two batches of raw materials at the same time, and when the filter screen needs to be cleaned or replaced, the lower layer 502 and the upper bin 501 are separated, and then the filter screen 504 can be directly removed for cleaning or replacement.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A colloid removal device for refining waste cooking oil into biodiesel, comprising a stirring kettle (1), a stirring mechanism (2) arranged inside the stirring kettle (1), and a bracket (3) supporting the stirring kettle (1); characterized in that: The lower part of the stirring kettle (1) is funnel-shaped. The lower end of the stirring kettle (1) is connected to a filter bin (5) via a connecting pipe (4). The filter bin (5) comprises an upper bin (501) and a lower bin (502). The upper bin (501) and the lower bin (502) are connected via threads. Support pins (503) are provided at equal angles on the inner wall of the lower bin (502). A filter screen (504) is provided above the support pins (503). The lower part of the lower bin (502) is funnel-shaped. An oil drain pipe (505) is provided below the lower bin (502).

2. The colloid removal device for refining biodiesel from waste oil according to claim 1, characterized in that: The stirring mechanism (2) comprises a motor (201) arranged in the middle of the upper part of the stirring kettle (1), a rotating shaft (202) arranged in the middle of the stirring kettle (1), and a plurality of stirring blades (203) arranged perpendicular to the rotating shaft (202); the rotating shaft (202) passes through the upper wall of the stirring kettle (1) and is keyed to the output shaft of the motor (201).

3. The colloid removal device for refining biodiesel from waste oil according to claim 2, characterized in that: The rotating shaft (202) is connected to the upper wall of the stirring kettle (1) via a bearing.

4. The colloid removal device for refining biodiesel from waste oil according to claim 2, characterized in that: The stirring tank (1) is provided with an oil inlet pipe (101) on one side of the motor (201) and is connected to the interior of the stirring tank (1). The upper end of the oil inlet pipe (101) is provided with a hinged cover plate (102).

5. The colloid removal device for refining biodiesel from waste oil according to claim 1, characterized in that: Valves are provided inside the connecting pipe (4) and the oil drain pipe (505).

6. The colloid removal device for refining biodiesel from waste oil according to claim 1, characterized in that: The volume above the filter screen (504) in the filtering bin (5) is greater than the volume of the stirring tank (1).

7. The colloid removal device for refining biodiesel from waste oil according to claim 1, characterized in that: The support (3) is provided with two fixing plates (301), the upper fixing plate (301) fixing the stirring kettle (1), and the lower fixing plate (301) fixing the filtering chamber (5).

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