Filtering device for edible oil production

Abstract

The utility model discloses a filter device for edible oil production belongs to edible oil filter device technical field, and its technical scheme main points include filter jar, the outside of filter jar is provided with constant temperature heating assembly, and the filter jar is wrapped outside through the flexible heating layer of constant temperature heating assembly in the application, and the electric heating wire of flexible heating layer outside can release heat and pass through the high temperature silica gel layer that it outside is wrapped and is evenly transferred, realizes the even heating to filter jar, and the heat preservation protective layer of electric heating wire outside can reduce the loss of heat, simultaneously, temperature sensor real -time monitoring heating temperature and feedback to screen display controller, realizes temperature accurate control, thereby guarantees the temperature stability control in the filter jar in the appropriate range, avoids soybean oil filtering process because of low temperature viscosity to increase obviously, prevents the oil liquid filtration from the root and forms the local stagnation on the filter screen surface because of viscosity increase.

Description

Technical Field

[0001] This utility model relates to the technical field of edible oil filtration devices, and in particular to a filtration device for edible oil production. Background Technology

[0002] Edible oil refers to animal or vegetable oils used in food production. It is liquid at room temperature. Due to factors such as raw material sources, processing technology, and quality, most common edible oils are vegetable oils, including rapeseed oil, peanut oil, corn oil, olive oil, and soybean oil. Among them, soybean oil, as the mainstream edible oil category in the market, requires multiple processes such as pressing, refining, and filtration. The filtration process is a key step in ensuring the clarity of the oil and removing impurities (such as phospholipids, gums, and small solid particles), which directly affects the core quality indicators such as the color of first-grade soybean oil.

[0003] Edible oil obtained through pressing generally contains a lot of impurities and needs to be filtered to obtain oil with better quality and color. However, the existing filtration devices for edible oil production have a simple structure and only use a simple filter screen for filtration. Because the oil is viscous, it is easy to accumulate on the filter screen, resulting in low oil throughput and low filtration efficiency, which cannot meet production needs.

[0004] An existing patent (publication number: CN221244161U) discloses a filtration device for edible oil production. This utility model uses a linear motor to drive the transmission shaft downward, which in turn moves the pressure plate downward to pressurize the oil, allowing it to pass through the filter screen under a certain pressure. This improves filtration efficiency and prevents the filter screen from clogging. The upper wall of the cavity of the pressure plate is connected to an inlet pipe, which extends through and is movably connected to the closed cover. Oil is injected into the cavity of the pressure plate through the inlet pipe, and the oil is evenly distributed through the oil holes. This oil inlet method makes efficient use of the filter screen.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, the filtration devices for edible oil production proposed in these patents employ a design of filter screen and gravity filtration. Although the filtration efficiency is improved by using a pressure plate, there are still significant drawbacks in practical applications. For example, in low-temperature environments (such as when temperatures are low in winter), the viscosity of soybean oil increases significantly. The pressure plate alone can only provide unidirectional pressure, which can easily lead to localized stagnation of oil on the surface of the filter screen. This not only reduces the filtration efficiency but also causes tiny phospholipid particles that precipitate at low temperatures to clog the filter screen pores, requiring frequent shutdowns for cleaning and severely impacting continuous production.

[0006] Therefore, a filtration device for edible oil production is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a filtration device for edible oil production, which can solve the problem of the filtration device for edible oil production proposed in the above-mentioned patent that adopts a filter screen and gravity filtration design. Although the filtration efficiency is improved by the pressure plate, there are still obvious defects in practical applications. For example, in low-temperature environments (such as when the temperature is low in winter), the viscosity of soybean oil will increase significantly. The pressure plate alone can only provide unidirectional pressure, which can easily cause the oil to form local stagnation on the surface of the filter screen. This will not only reduce the filtration efficiency, but also cause the tiny phospholipid particles that precipitate at low temperatures to clog the filter screen pores, requiring frequent shutdowns for cleaning, which seriously affects continuous production.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a filtration device for edible oil production, comprising a filter tank, a constant temperature heating component disposed on the outside of the filter tank, a filter structure disposed in the middle inside the filter tank, and a feeding pressurizing component disposed on the top side inside the filter tank, the feeding pressurizing component being located at the top of the filter structure;

[0009] The constant temperature heating component includes a flexible heating layer wrapped around the outside of the filter tank. An electric heating wire is embedded in the outer side of the flexible heating layer. A high-temperature silicone layer is wrapped around the outer side of the electric heating wire. A heat insulation protective layer is fixedly connected to the outer side of the flexible heating layer. A temperature sensor is provided at the bottom left side of the heat insulation protective layer. The sensing end of the temperature sensor penetrates through the left side of the heat insulation protective layer and contacts the flexible heating layer. A display controller is provided at the top left side of the heat insulation protective layer. The display controller is electrically connected to the temperature sensor and the electric heating wire.

[0010] Preferably, the feeding and pressurizing assembly includes an electric cylinder bolted to the top of the filter tank, the telescopic end of the electric cylinder passing through the top of the filter tank, the electric cylinder being electrically connected to the screen display controller, a lifting plate being fixedly connected to the telescopic end of the electric cylinder, and a hanging plate being provided on the top of the lifting plate.

[0011] Preferably, each of the four corners of the top of the lifting plate is provided with a sliding pin, the bottom of the sliding pin is fixedly connected to the top of the hanging plate, a pressure sensor is embedded in the top of the hanging plate, the sensing end of the pressure sensor is in contact with the bottom of the lifting plate, and the pressure sensor is electrically connected to the screen display controller.

[0012] Preferably, a pressure plate is fixedly connected to the bottom of the hanging plate. The inside of the pressure plate is a cavity. Several through holes are opened at the bottom of the pressure plate. An oil inlet pipe is connected to the right side of the top of the pressure plate. The top of the oil inlet pipe penetrates the right side of the top of the filter tank.

[0013] Preferably, the filter structure includes a fixing block, which is welded at intervals along the circumference inside the filter tank. A second filter screen is provided on the top of the fixing block, and a through hole is provided at the bottom of the second filter screen.

[0014] Preferably, a first filter screen is provided on the top of the second filter screen, the first filter screen is located at the bottom of the pressure plate, a positioning hole is provided at the bottom of the first filter screen, a positioning post is welded to the top of the fixing block, and the top of the positioning post passes through the interior of the through hole and is engaged inside the positioning hole.

[0015] Preferably, the bottom of the filter tank is connected to a discharge valve, and the front side of the discharge valve is connected to a drain pipe.

[0016] Preferably, the top of the oil inlet pipe is connected to an oil filling bucket.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application sets up a filter tank and a constant temperature heating component. The filter tank is wrapped with a flexible heating layer of the constant temperature heating component. The electric heating wire on the outside of the flexible heating layer can release heat and be evenly transferred through the high temperature silicone layer wrapped on the outside, so as to achieve uniform heating of the filter tank. The heat insulation protective layer on the outside of the electric heating wire can reduce heat loss. At the same time, the temperature sensor monitors the heating temperature in real time and feeds it back to the display controller to achieve precise temperature control. This ensures that the temperature inside the filter tank is stably controlled within a suitable range, avoiding a significant increase in viscosity at low temperatures during the soybean oil filtration process. This fundamentally prevents the formation of local stagnation on the filter screen surface due to increased viscosity during oil filtration, reduces filter screen clogging, eliminates the need for frequent shutdowns for cleaning, and ensures continuous production.

[0019] 2. This application sets up a filtration structure and a feeding pressurization component. The feeding pressurization component can provide uniform pressure to the oil. Combined with its own structural design, it can make the oil evenly cover the surface of the filtration structure and avoid local stagnation. At the same time, the double-layer filter screen of the filtration structure can improve the filtration effect of impurities and avoid the problem of easy clogging of a single filter screen. In conjunction with the constant temperature heating component, it can solve the problems of low filtration efficiency and easy shutdown of the device. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the filtration device for edible oil production according to this utility model;

[0021] Figure 2 This is a structural diagram of the constant temperature heating component of this utility model;

[0022] Figure 3 This is a structural diagram of the filter tank of this utility model;

[0023] Figure 4This is a structural diagram of the filter structure of this utility model;

[0024] Figure 5 This is a structural diagram of the feeding and pressurizing assembly of this utility model.

[0025] In the diagram, 1. Filter tank; 2. Constant temperature heating assembly; 201. Flexible heating layer; 202. Electric heating wire; 203. High-temperature silicone layer; 204. Thermal insulation and protection layer; 205. Temperature sensor; 206. Display controller; 3. Filter structure; 301. Fixing block; 302. Second filter screen; 303. Through hole; 304. First filter screen; 305. Positioning hole; 306. Positioning column; 4. Feeding and pressurizing assembly; 401. Electric cylinder; 402. Lifting plate; 403. Hanging plate; 404. Sliding pin; 405. Pressure sensor; 406. Pressurizing plate; 407. Through hole; 408. Oil inlet pipe; 5. Discharge valve; 6. Drain pipe; 7. Oil hopper. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] A filtration device for edible oil production includes a filter tank 1, a constant temperature heating component 2 is provided on the outside of the filter tank 1, a filter structure 3 is provided in the middle inside the filter tank 1, and a feeding and pressurizing component 4 is provided on the top side inside the filter tank 1, with the feeding and pressurizing component 4 located at the top of the filter structure 3.

[0029] The constant temperature heating component 2 includes a flexible heating layer 201 wrapped around the outside of the filter tank 1. An electric heating wire 202 is embedded in the outer side of the flexible heating layer 201. A high-temperature silicone layer 203 is wrapped around the outer side of the electric heating wire 202. A heat insulation protective layer 204 is fixedly connected to the outer side of the flexible heating layer 201. A temperature sensor 205 is provided at the bottom left side of the heat insulation protective layer 204. The sensing end of the temperature sensor 205 passes through the left side of the heat insulation protective layer 204 and contacts the flexible heating layer 201. A display controller 206 is provided at the top left side of the heat insulation protective layer 204. The display controller 206 is electrically connected to the temperature sensor 205 and the electric heating wire 202 respectively.

[0030] In this embodiment: by setting up a filter tank 1, a constant temperature heating component 2, a filter structure 3, and a feeding and pressurizing component 4, the device first activates the display controller 206 of the constant temperature heating component 2 when it is working, sets the appropriate temperature parameters for soybean oil filtration, and then the electric heating wire 202 is energized to release heat. The heat is evenly transferred to the flexible heating layer 201 through the high-temperature silicone layer 203 wrapped on the outside. Because the flexible heating layer 201 tightly wraps the outside of the filter tank 1, it can efficiently conduct heat to the inside of the filter tank 1. At the same time, the outer heat insulation layer 204 can reduce heat loss to the outside and avoid temperature fluctuations. The sensing end of the temperature sensor 205 is in continuous contact with the flexible heating layer 201 to monitor the heating temperature in real time and feed the data back to the display controller 206. If the temperature is lower than the set value, the display controller 206 controls the electric heating wire 202. Increase the power for supplemental heating; if the temperature exceeds the set value, reduce the power to ensure that the temperature inside the filter tank 1 remains stable within a suitable range. This prevents the soybean oil from increasing in viscosity due to low temperatures. Once the temperature inside the filter tank 1 is stable, the soybean oil to be filtered is introduced into the feeding and pressurizing component 4. The feeding and pressurizing component 4 is activated and applies uniform pressure to the oil, pushing it to flow smoothly into the filter structure 3 in the middle of the filter tank 1. Under pressure, the oil evenly covers the surface of the filter structure 3, avoiding local stagnation caused by uneven pressure or high oil viscosity. Subsequently, the oil passes through the filter structure 3 to complete the filtration of impurities. During this process, because the constant temperature heating component 2 has controlled the oil viscosity and the feeding and pressurizing component 4 provides stable pressure, the tiny phospholipid particles precipitated at low temperatures are not prone to accumulate and clog the surface of the filter structure 3, ensuring filtration efficiency without frequent shutdowns for cleaning.

[0031] Specifically, such as Figure 5 As shown, the feeding and pressurizing assembly 4 includes an electric cylinder 401 bolted to the top of the filter tank 1. The telescopic end of the electric cylinder 401 passes through the top of the filter tank 1. The electric cylinder 401 is electrically connected to the screen display controller 206. A lifting plate 402 is fixedly connected to the telescopic end of the electric cylinder 401. A hanging plate 403 is provided on the top of the lifting plate 402.

[0032] Specifically, such as Figure 5 As shown, sliding pins 404 are provided inside the four corners of the top of the lifting plate 402. The bottom of the sliding pins 404 is fixedly connected to the top of the hanging plate 403. A pressure sensor 405 is embedded in the top of the hanging plate 403. The sensing end of the pressure sensor 405 is in contact with the bottom of the lifting plate 402. The pressure sensor 405 is electrically connected to the screen display controller 206.

[0033] Specifically, such as Figure 5 As shown, a pressure plate 406 is fixedly connected to the bottom of the hanging plate 403. The inside of the pressure plate 406 is a cavity. Several through holes 407 are opened at the bottom of the pressure plate 406. An oil inlet pipe 408 is connected to the right side of the top of the pressure plate 406. The top of the oil inlet pipe 408 penetrates the right side of the top of the filter tank 1.

[0034] In this embodiment: By setting the feeding and pressurizing component 4, when the device is working, the soybean oil to be filtered is first injected into the cavity of the pressurizing plate 406 through the oil inlet pipe 408. The oil is then evenly dispersed to the surface of the filter structure 3 through several through holes 407 at the bottom of the pressurizing plate 406, avoiding local accumulation of oil. During this process, the display controller 206 sends a command to the electric cylinder 401. The telescopic end of the electric cylinder 401 drives the lifting plate 402 to move down smoothly. The lifting plate 402 drives the hanging plate 403 and the bottom pressurizing plate 406 to move down synchronously through the sliding pin 404. During the downward movement of the pressurizing plate 406, pressure is applied to the oil dispersed on the surface of the filter structure 3, pushing the oil through the filter structure 3 faster and improving the filtration efficiency. During this pressurization process, the pressurizing plate 406 will be subjected to the reaction force of the oil, which is transmitted through the hanging plate 403. The pressure sensor 405 at the top causes the sensing end of the pressure sensor 405 to be squeezed against the bottom of the lifting plate 402, generating pressure data. The pressure sensor 405 feeds the data back to the display controller 206 in real time, allowing the operator to monitor the pressurization status. When all the oil has been forced out and passed through the filter structure 3, the pressure plate 406 will make hard contact with the filter structure 3. At this time, the pressure value detected by the pressure sensor 405 increases sharply. After receiving the signal, the display controller 206 controls the electric cylinder 401 to stop moving down, and then drives the extension end of the electric cylinder 401 to rise, driving the lifting plate 402, the hanging plate 403, and the pressure plate 406 back to their initial positions, waiting for the next oil pressing operation. The whole process is automated and precise, ensuring the pressurization effect while avoiding damage caused by long-term hard contact between the pressure plate 406 and the filter structure 3.

[0035] Specifically, such as Figure 4 As shown, the filter structure 3 includes a fixing block 301, which is welded at intervals along the circumference inside the filter tank 1. A second filter screen 302 is provided on the top of the fixing block 301, and a through hole 303 is provided on the bottom of the second filter screen 302.

[0036] Specifically, such as Figure 4 As shown, a first filter 304 is provided on the top of the second filter 302. The first filter 304 is located at the bottom of the pressure plate 406. A positioning hole 305 is provided at the bottom of the first filter 304. A positioning post 306 is welded to the top of the fixing block 301. The top of the positioning post 306 passes through the interior of the through hole 303 and is engaged inside the positioning hole 305.

[0037] In this embodiment: by setting up a filter structure 3, the fixing block 301 is welded at intervals along the circumference inside the filter tank 1, providing a stable support for the entire filter structure 3 and preventing displacement due to oil impact or pressure during the filtration process. The second filter screen 302 is placed on top of the fixing block 301, and the first filter screen 304 is fixedly engaged with the positioning post 306 on the top of the fixing block 301 through the bottom positioning hole 305 (the positioning post 306 also passes through the through hole 303 of the second filter screen 302, realizing dual positioning of the first filter screen 304 and the second filter screen 302), ensuring that the second filter screen 302 and the first filter screen are properly positioned. With precise alignment and stable positioning, during filtration, the oil first contacts the upper first filter screen 304 to initially filter large particles of impurities, and then passes through the second filter screen 302 to filter small impurities. The synergistic effect of the two filter screens improves filtration accuracy. At the same time, the cooperation between the positioning post 306, the positioning hole 305, and the through hole 303 makes it easier to disassemble and assemble the first filter screen 304 and the second filter screen 302. When cleaning or replacement is required, simply open the filter tank 1, remove the first filter screen 304 upwards, and lift the second filter screen 302. There is no need to disassemble the fixing block 301, reducing downtime for maintenance and ensuring continuous production.

[0038] Specifically, such as Figure 3 As shown, the bottom of the filter tank 1 is connected to a discharge valve 5, and the front side of the discharge valve 5 is connected to a drain pipe 6.

[0039] Specifically, such as Figure 5 As shown, the top of the oil inlet pipe 408 is connected to the oil filling hopper 7.

[0040] In this embodiment: by setting up a drain valve 5, a drain pipe 6, and a filling hopper 7, the filling hopper 7 is designed in the shape of a funnel, which expands the oil inlet opening area, making it less likely to spill when the filtered soybean oil is injected. At the same time, it can guide the oil to quickly converge to the oil inlet pipe 408, avoiding oil waste or equipment contamination outside the tank. After filtration, the drain valve 5 is opened, and the filtered clean oil can be directionally transported to the storage container through the drain pipe 6 (the direction of the drain pipe 6 can be adjusted according to actual needs to adapt to the workshop layout). There is no need to directly pour out the filter tank 1, making the operation safer and more convenient. If it is necessary to clean the residual oil or impurities inside the filter tank 1, they can also be quickly discharged through the drain valve 5 and the drain pipe 6, reducing the accumulation of scale inside the tank, reducing the difficulty of cleaning the equipment, and further improving the ease of use of the device.

[0041] Working Principle: During the use of the filtration device for edible oil production, firstly, the display controller 206 is started and operated. A suitable temperature is set according to the soybean oil filtration requirements. After the display controller 206 is powered on, the electric heating wire 202 begins to release heat. The heat is evenly conducted to the flexible heating layer 201 through the outer high-temperature silicone layer 203. Because the flexible heating layer 201 is tightly attached to the outside of the filter tank 1, it can efficiently transfer heat to the inside of the filter tank 1. At the same time, the outer heat insulation layer 204 can reduce heat loss to the outside and prevent temperature fluctuations inside the tank. During this period, the sensing end of the temperature sensor 205 is continuously in contact with the flexible heating layer 201, monitoring the heating temperature in real time and feeding the data back to the display controller 206. If the temperature is lower than the set value, the display controller 206 automatically... The electric heating wire 202 is dynamically controlled to increase power for supplemental heating. If the temperature exceeds the set value, the power is reduced to ensure that the temperature inside the filter tank 1 remains stable within the set range. This prevents the viscosity of soybean oil from increasing due to low temperature, thus facilitating subsequent filtration operations. After the temperature inside the filter tank 1 stabilizes, preparations for oil injection and pressurization are made. The soybean oil to be filtered is poured into the oil filling hopper 7. The funnel shape of the oil filling hopper 7 guides the oil to quickly converge to the oil inlet pipe 408, avoiding spillage or equipment contamination during injection. The oil flows through the oil inlet pipe 408 into the cavity of the pressure plate 406 of the feeding and pressurizing assembly 4, and then is evenly distributed through several through holes 407 at the bottom of the pressure plate 406 onto the first filter screen 304 of the lower filter structure 3, preventing local accumulation of oil on the filter screen surface and ensuring the first filter screen 304... With uniform force and filtration area, the feeding and pressurizing assembly 4 is then activated for pressurized filtration. The display controller 206 sends a downward command to the electric cylinder 401. The telescopic end of the electric cylinder 401 drives the lifting plate 402 to move smoothly downward. The lifting plate 402 drives the hanging plate 403 and the bottom pressure plate 406 to move downward synchronously through the sliding pins 404 at the four corners. During the downward movement of the pressure plate 406, a continuous and uniform pressure is applied to the oil dispersed on the surface of the first filter screen 304, pushing the oil to quickly penetrate the filter screen. First, large particles of impurities are initially filtered through the first filter screen 304, and then small impurities are filtered through the second filter screen 302. The two-layer filter screen works together to improve the filtration accuracy. During this process, the reaction force of the oil on the pressure plate 406 is transmitted to the pressure sensor 4 at the top through the hanging plate 403. 05. The pressure sensor 405 presses against the bottom of the lifting plate 402 to generate real-time pressure data. The pressure sensor 405 synchronously feeds the data back to the display controller 206, allowing the operator to visually monitor the pressurization status and ensure that the pressure meets the filtration requirements without damaging the first filter screen 304. After all the oil is forced out and passes through the filter structure 3, the pressure plate 406 makes hard contact with the first filter screen 304. The pressure sensor 405 detects a sharp increase in pressure. Upon receiving the signal, the display controller 206 immediately controls the electric cylinder 401 to stop moving downwards. Subsequently, it drives the telescopic end of the electric cylinder 401 to rise, causing the lifting plate 402, the hanging plate 403, and the pressure plate 406 to return to their initial positions, awaiting the next filtration operation. Finally, the filtered oil is collected and the equipment is cleaned.Open the drain valve 5 at the bottom of filter tank 1. The filtered clean soybean oil is then directed to the storage container through the drain pipe 6. If cleaning is required, keep the drain valve 5 open and inject a small amount of clean water or edible oil-specific cleaning agent into filter tank 1 to rinse away residual impurities. The rinsing liquid is discharged through the drain pipe 6, reducing scale buildup inside the tank. The coordinated design of the entire system avoids the problems of low filtration efficiency and easy clogging at low temperatures, while also automating the filtration process, ensuring continuous production while improving oil quality.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filtration device for edible oil production, comprising a filter tank (1), characterized in that: A constant temperature heating component (2) is provided on the outside of the filter tank (1), a filter structure (3) is provided in the middle inside the filter tank (1), and a feeding pressurizing component (4) is provided on the top side inside the filter tank (1). The feeding pressurizing component (4) is located at the top of the filter structure (3). The constant temperature heating component (2) includes a flexible heating layer (201) wrapped around the outside of the filter tank (1). An electric heating wire (202) is embedded in the outside of the flexible heating layer (201). A high-temperature silicone layer (203) is wrapped around the outside of the electric heating wire (202). A heat insulation protective layer (204) is fixedly connected to the outside of the flexible heating layer (201). A temperature sensor (205) is provided at the bottom left side of the heat insulation protective layer (204). The sensing end of the temperature sensor (205) penetrates through the left side of the heat insulation protective layer (204) and contacts the flexible heating layer (201). A display controller (206) is provided at the top left side of the heat insulation protective layer (204). The display controller (206) is electrically connected to the temperature sensor (205) and the electric heating wire (202).

2. The filtration device for edible oil production according to claim 1, characterized in that: The feeding and pressurizing assembly (4) includes an electric cylinder (401) bolted to the top of the filter tank (1). The telescopic end of the electric cylinder (401) passes through the top of the filter tank (1). The electric cylinder (401) is electrically connected to the screen display controller (206). A lifting plate (402) is fixedly connected to the telescopic end of the electric cylinder (401). A hanging plate (403) is provided on the top of the lifting plate (402).

3. The filtration device for edible oil production according to claim 2, characterized in that: The lifting plate (402) has sliding pins (404) inside the four corners of its top. The bottom of the sliding pins (404) is fixedly connected to the top of the hanging plate (403). The top of the hanging plate (403) is embedded with a pressure sensor (405). The sensing end of the pressure sensor (405) is in contact with the bottom of the lifting plate (402). The pressure sensor (405) is electrically connected to the screen display controller (206).

4. A filtration device for edible oil production according to claim 2, characterized in that: A pressure plate (406) is fixedly connected to the bottom of the hanging plate (403). The inside of the pressure plate (406) is a cavity. Several through holes (407) are opened at the bottom of the pressure plate (406). An oil inlet pipe (408) is connected to the right side of the top of the pressure plate (406). The top of the oil inlet pipe (408) penetrates the right side of the top of the filter tank (1).

5. A filtration device for edible oil production according to claim 1, characterized in that: The filter structure (3) includes a fixing block (301), which is welded circumferentially along the inside of the filter tank (1). A second filter screen (302) is provided on the top of the fixing block (301), and a through hole (303) is provided on the bottom of the second filter screen (302).

6. A filtration device for edible oil production according to claim 5, characterized in that: The top of the second filter screen (302) is provided with a first filter screen (304), the first filter screen (304) is located at the bottom of the pressure plate (406), the bottom of the first filter screen (304) is provided with a positioning hole (305), the top of the fixing block (301) is welded with a positioning post (306), the top of the positioning post (306) passes through the interior of the through hole (303) and is engaged inside the positioning hole (305).

7. A filtration device for edible oil production according to claim 1, characterized in that: The bottom of the filter tank (1) is connected to a discharge valve (5), and the front side of the discharge valve (5) is connected to a drain pipe (6).

8. A filtration device for edible oil production according to claim 4, characterized in that: The top of the oil inlet pipe (408) is connected to an oil filling hopper (7).

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