Oil filter for deep-fried ribbonfish and its filtering method

Abstract

This invention relates to an oil filter for frying ribbonfish and its filtration method, belonging to the technical field of filtration equipment. It includes a coarse filter box, a filter tank, and an outflow system. The coarse filter box is installed on the filter tank, which is divided into a primary filtration chamber and a secondary filtration chamber by a filter grading plate. The primary filtration chamber of the filter tank contains several filter support tubes, each covered with a filter cloth. Several support rings are installed inside each filter cloth, and several holes are provided on the filter support tubes. The inner wall of the filter support tubes passes through the filter grading plate and connects to the secondary filtration chamber. Each support ring slides along the surface of the filter support tube. A retardation device is installed on the side of the filter cloth closest to the secondary filtration chamber. Several recovery devices are provided on the outer wall of the filter tank away from the secondary filtration chamber. The recovery devices are connected to each support ring via a transmission mechanism. The retardation device slides along the outer wall of the filter support tube and is engaged with the outer wall of the filter support tube closest to the filter grading plate, ensuring long-term reliable operation of the equipment.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment technology, and in particular to an oil filter for frying ribbonfish and its oil filtration method. Background Technology

[0002] In the large-scale production of fried aquatic products such as ribbonfish, specialized oil filters are key equipment for ensuring product quality and controlling costs. These devices effectively filter out particulate impurities, carbides, and polymers generated in high-temperature frying oil, significantly improving the frying environment and extending the oil's lifespan several times over. Their working principle typically involves using a vacuum or pumping system to draw hot oil from the fryer into the filtration chamber. After purification by filter aids and specialized filter paper, the clear oil is then returned to the fryer for reuse.

[0003] There are stationary continuous oil filters on the market designed for fish frying production lines, featuring automatic operation and clogging alarm functions. Using an oil filter not only ensures consistently golden-brown, crispy ribbonfish, but also reduces waste disposal difficulty and saves up to 30-40% on oil consumption by producing dry waste residue with extremely low oil content, achieving a balance between economic benefits and product quality.

[0004] Existing technologies still have shortcomings in continuous production. Although they can trigger alarms for blockages, they often require downtime to replace filter cartridges, which reduces production efficiency. Summary of the Invention

[0005] To overcome the technical defects of the existing technology, the present invention provides an oil filter for frying ribbonfish and its oil filtering method, so as to achieve long-term reliable operation of the equipment.

[0006] The technical solution adopted in this invention is:

[0007] An oil filter for frying ribbonfish includes a coarse filter box, a filter tank, and an outflow system. The coarse filter box is installed on the filter tank. The filter tank is divided into a primary filtration chamber and a secondary filtration chamber by a filter grading plate. The primary filtration chamber of the filter tank has several filter support tubes, each covered with a filter cloth. Several support rings are installed on the inner side of each filter cloth. Several holes are provided on the filter support tubes. The inner sidewall of the filter support tubes passes through the filter grading plate and connects to the secondary filtration chamber. Each support ring slides along the surface of the filter support tube. A retardation device is installed on the side of the filter cloth near the secondary filtration chamber. Several recovery devices are provided on the outer sidewall of the filter tank away from the secondary filtration chamber. The recovery devices are drivenly connected to each support ring. The retardation devices slide along the outer sidewall of the filter support tubes, press against the filter cloth, and are locked onto the outer sidewall of the filter support tubes near the filter grading plate.

[0008] Preferably, the coarse filter box includes a box body, several fish block filter screens and several coarse filter screens, with each fish block filter screen and each coarse filter screen arranged from top to bottom.

[0009] Preferably, the total cross-sectional area of ​​the pores on the side of the filter carrier closest to the secondary filter chamber gradually increases in the direction away from the secondary filter chamber.

[0010] Preferably, the outflow system includes an outflow pipe and a plurality of connecting pipes, each connecting pipe connecting the primary filtration chamber and the outflow pipe, and each connecting pipe connecting the secondary filtration chamber and the outflow pipe.

[0011] Preferably, the recycling device is installed on the lower side of the corresponding filter carrier.

[0012] Preferably, the hysteresis device includes a hysteresis ring, a hysteresis swing rod, and a hysteresis elastic push rod. The hysteresis swing rod is rotatably mounted on the hysteresis ring, and the hysteresis ring slides along the outer wall of the filter support tube. The hysteresis elastic push rod is slidably mounted on the side of the hysteresis swing rod away from the hysteresis ring, and the hysteresis elastic push rod isolates each support ring.

[0013] Preferably, the recycling device includes a recycling motor and a recycling spiral frame, the recycling spiral frame separating each support ring, the recycling motor being mounted on the side wall of the filter tank, and the recycling spiral frame being mounted on the output end of the recycling motor.

[0014] The oil filtering method for deep-frying ribbonfish using an oil filter includes the following steps:

[0015] S1: Oil flows from the top of the coarse filter box into the primary filtration chamber under the action of gravity;

[0016] S2: The oil passes through the filter cloth and flows into the inner side of the filter support tube through the holes on the filter support tube. Impurities are retained on the outer side of the filter cloth. The recovery device slides each support ring away from the secondary filtration chamber.

[0017] S3: The delay device unfolds the filter cloth until the filter cloth is used up;

[0018] S4: The oil in the filter carrier flows into the secondary filter chamber after passing through the filter grading plate.

[0019] The beneficial effects of this invention are:

[0020] The coarse filter box is installed on the filter tank for coarse filtration, removing chunks of fish meat, fish skin, and other ingredients. The filter tank is divided into a primary filtration chamber and a secondary filtration chamber by a filter grading plate, which filter sequentially. The secondary filtration chamber contains several layers of filter screens. The primary filtration chamber of the filter tank contains several filter support tubes, each covered with a filter cloth. Each filter cloth has several support rings installed on its inner side. The filter cloth is cylindrical, and the support rings provide support for applying traction. In other words, the position of the filter cloth is changed by changing the position of the support rings. The support rings also allow the filter cloth to be stretched and folded. The filter support tubes have several holes, and the inner wall of the filter support tubes passes through the filter grading plate and connects to the secondary filtration chamber. Each support ring slides along the surface of the filter support tube. The oil filtered from the coarse filter box passes through the filter cloth on the outside of the filter support tube and enters the interior of the filter support tube through the holes until it flows into the secondary filtration chamber.

[0021] A hysteresis device is installed on the side of the filter cloth near the secondary filtration chamber. Several recovery devices are provided on the outer wall of the filter tank away from the secondary filtration chamber. The recovery devices are connected to each support ring. The hysteresis device slides along the outer wall of the filter support tube and presses on the filter cloth. When the oil is initially filtered, the filter cloth is stacked on one side of the recovery device. The outer wall of the filter support tube near the filter grading plate has grooves. An elastic plate is provided near the groove of the hysteresis device. The elastic plate is adapted to the groove. When the hysteresis device slides along the outer wall of the filter support tube until the elastic plate is stuck in the groove, the hysteresis device is stuck on the outer wall of the filter support tube near the filter grading plate and is temporarily fixed. After the filter cloth becomes clogged after a period of use, the recovery device is manually activated, which drives the support rings to slide along the filter support tube, so that the clogged filter cloth is folded at the position of the recovery device. Because the hysteresis device presses down on the stacked filter cloth, the filter cloth overcomes the friction constraint of the hysteresis device when the recovery device is used to recover it, and the new filter cloth is gradually unfolded, so as to achieve long-term reliable operation of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention with the filter tank concealed.

[0023] Figure 2 This is a schematic diagram showing the installation locations of the delay device and the recovery device.

[0024] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0025] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0026] Figure 5 for Figure 4 Enlarged diagram of point C in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Coarse filter box;

[0029] 2. Filter tank; 21. Filter grading plate; 22. Primary filter chamber; 23. Secondary filter chamber; 25. Filter support tube; 26. Filter cloth; 27. Support ring; 28. Hysteresis device; 281. Hysteresis ring; 282. Hysteresis swing rod; 283. Hysteresis elastic push rod; 29. ​​Recovery device; 291. Recovery motor; 292. Recovery screw frame;

[0030] 3. Outflow system; 31. Outflow pipe; 32. Connecting pipe. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] like Figure 1 — Figure 5 As shown, this embodiment provides an oil filter for frying ribbonfish, including a coarse filter box 1, a filter tank 2, and an outflow system 3. The coarse filter box 1 is installed on the filter tank 2 for coarse filtration, filtering out chunks of fish meat, fish skin, and ingredients. The filter tank 2 is divided into a primary filtration chamber 22 and a secondary filtration chamber 23 by a filter grading plate 21, and filtration is performed sequentially. The secondary filtration chamber 23 is provided with several layers of filter screens. The primary filtration chamber 22 of the filter tank 2 is provided with several filter support tubes 25. Each filter support tube 25 is covered with a filter cloth 26. Several support rings 27 are installed on the inner side of each filter cloth 26. The filter cloth 26 is cylindrical. The ring 27 provides support for the filter cloth 26 to apply traction force. That is, the position of the filter cloth 26 can be changed by changing the position of the support ring 27. Each support ring 27 also allows the filter cloth 26 to be stretched, making it easy to fold. The filter support tube 25 is provided with several holes. The inner sidewall of the filter support tube 25 passes through the filter grading plate 21 and connects to the secondary filter chamber 23. Each support ring 27 slides along the surface of the filter support tube 25. The oil filtered from the coarse filter box 1 passes through the filter cloth 26 on the outside of the filter support tube 25 and enters the interior of the filter support tube 25 through the holes until it flows into the secondary filter chamber 23.

[0033] A hysteresis device 28 is installed on the side of the filter cloth 26 near the secondary filtration chamber 23. Several recovery devices 29 are provided on the outer wall of the filter tank 2 away from the secondary filtration chamber 23. The recovery devices 29 are connected to each support ring 27. The hysteresis device 28 slides along the outer wall of the filter support tube 25, pressing against the filter cloth 26. At the start of oil filtration, the filter cloth 26 is stacked on one side of the recovery device 29. Grooves are provided on the outer wall of the filter support tube 25 near the filter classifier plate 21. An elastic sheet is provided near the groove of the hysteresis device 28, which is adapted to the groove. When the hysteresis device 28 slides along the outer wall of the filter support tube 25 until the elastic sheet... After the filter cloth 26 is inserted into the groove, the delay device 28 is locked onto the outer wall of the filter support tube 25 near the filter classifier plate 21, thus temporarily fixing the delay device 28. After the filter cloth 26 becomes clogged after a period of use, the recovery device 29 is manually activated, causing the recovery device 29 to drive each support ring 27 to slide along the filter support tube 25. This causes the clogged filter cloth 26 to be folded at the position of the recovery device 29. Since the delay device 28 presses down on the stacked filter cloth 26, when the recovery device 29 recovers the filter cloth 26, the filter cloth 26 overcomes the frictional constraint of the delay device 28, and the new filter cloth 26 is gradually unfolded, achieving long-term reliable operation of the equipment.

[0034] Specifically, the coarse filter box 1 includes a box body, several fish block filter screens and several coarse filter screens. The fish block filter screens and coarse filter screens are arranged from top to bottom to achieve the gradual interception of large pieces of material. The fish block filter screens and coarse filter screens are detachably installed on the box body by clips or bolts, which is convenient for replacement and maintenance.

[0035] Specifically, the total cross-sectional area of ​​the pores on the side of the filter support tube 25 closest to the secondary filter chamber 23 gradually increases towards the side furthest from the secondary filter chamber 23. This causes impurities to tend to adhere to the filter cloth 26 on the side furthest from the secondary filter chamber 23, making it easier to quickly collect the impurities after the filter cloth 26 is folded. This is achieved in two ways: first, the pores on the side of the filter support tube 25 furthest from the secondary filter chamber 23 are more dense; second, the pore diameter on the side of the filter support tube 25 furthest from the secondary filter chamber 23 is larger.

[0036] Specifically, the outflow system 3 includes an outflow pipe 31 and several connecting pipes 32. Each connecting pipe 32 connects the primary filtration chamber 22 and the outflow pipe 31, and each connecting pipe 32 connects the secondary filtration chamber 23 and the outflow pipe 31. A valve is provided on the connecting pipe 32 to control the outflow speed of the filtered material.

[0037] Specifically, the recovery device 29 is installed on the lower side of the corresponding filter support tube 25 to facilitate the driving of the hanging support ring 27. The diameter of the support ring 27 is larger than the diameter of the filter support tube 25. Therefore, when the support ring 27 is hung on the filter support tube 25, the upper side of the support ring 27 is hung on the filter support tube 25, while the lower side of the support ring 27 hangs down from the lower side of the filter support tube 25, so that the recovery device 29 can apply force to each support ring 27.

[0038] Specifically, the hysteresis device 28 includes a hysteresis ring 281, a hysteresis swing rod 282, and a hysteresis elastic push rod 283. The hysteresis swing rod 282 is rotatably mounted on the hysteresis ring 281 via a pin. The hysteresis ring 281 slides along the outer wall of the filter support tube 25, facilitating its removal from the filter support tube 25 for maintenance. The hysteresis elastic push rod 283 is slidably mounted on the side of the hysteresis swing rod 282 away from the hysteresis ring 281. Under the weight of the hysteresis elastic push rod 283 and the hysteresis swing rod 282, the hysteresis elastic push rod 283 presses between adjacent support rings 27, isolating each support ring 27. When the recovery device 29 recovers the support rings 27, the hysteresis elastic push rod 283 releases each support ring 27 one by one, allowing the filter cloth 26 to fully unfold.

[0039] Specifically, the recycling device 29 includes a recycling motor 291 and a recycling spiral frame 292. The recycling spiral frame 292 is spring-shaped and separates each support ring 27. That is, each support ring 27 is embedded in the recycling spiral frame 292, so that when the recycling spiral frame 292 rotates, each support ring 27 can slide along the filter support tube 25. The recycling motor 291 is installed on the side wall of the filter tank 2, and the recycling spiral frame 292 is installed at the output end of the recycling motor 291. When the recycling spiral frame 292 rotates, it drives each support ring 27 to overlap each other, thus recycling and folding the filter cloth 26.

[0040] The oil filtering method for deep-frying ribbonfish using an oil filter includes the following steps:

[0041] S1: Oil flows from the top of the coarse filter box 1 into the primary filter chamber 22 under the action of gravity;

[0042] S2: The oil passes through the filter cloth 26 and flows into the inner side of the filter support tube 25 through the holes in the filter support tube 25. Impurities are retained on the outer side of the filter cloth 26. The recovery device 29 slides each support ring 27 away from the secondary filtration chamber 23.

[0043] S3: The delay device 28 unfolds the filter cloth 26 until the filter cloth 26 is used up;

[0044] S4: The oil in the filter carrier 25 flows into the secondary filter chamber 23 after passing through the filter classifier plate 21, thus achieving long-term reliable operation of the equipment.

[0045] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An oil filter for deep-frying ribbonfish, characterized in that, The system includes a coarse filter box, a filter tank, and an effluent system. The coarse filter box is mounted on the filter tank. The filter tank is divided into a primary filtration chamber and a secondary filtration chamber by a filter grading plate. The primary filtration chamber of the filter tank contains several filter support tubes, each covered with a filter cloth. Several support rings are installed on the inner side of each filter cloth. Several holes are provided on each filter support tube. The inner wall of each filter support tube passes through the filter grading plate and connects to the secondary filtration chamber. Each support ring slides along the surface of the filter support tube. A hysteresis device is installed on the side of the filter cloth closest to the secondary filtration chamber. The filter tank has several recovery devices on its outer wall away from the secondary filtration chamber. The recovery devices are connected to each support ring, and the hysteresis devices slide along the outer wall of the filter support tubes. The hysteresis device is pressed onto the filter cloth and is secured to the outer wall of the filter support tube near the filter grading plate. The hysteresis device includes a hysteresis ring, a hysteresis swing rod, and a hysteresis elastic push rod. The hysteresis swing rod is rotatably mounted on the hysteresis ring, and the hysteresis ring slides along the outer wall of the filter support tube. The hysteresis elastic push rod is slidably mounted on the side of the hysteresis swing rod away from the hysteresis ring and isolates each support ring. The recovery device includes a recovery motor and a recovery screw frame. The recovery screw frame separates each support ring. The recovery motor is mounted on the side wall of the filter tank, and the recovery screw frame is mounted on the output end of the recovery motor. The cross-sectional area of ​​the holes on the side of the filter support tube near the secondary filtration chamber gradually increases towards the direction away from the secondary filtration chamber.

2. The oil filter for deep-frying ribbonfish according to claim 1, characterized in that, The coarse filter box includes a box body, several fish block filter screens and several coarse filter screens, with each fish block filter screen and each coarse filter screen arranged from top to bottom.

3. The oil filter for deep-frying ribbonfish according to claim 1, characterized in that, The outflow system includes an outflow pipe and several connecting pipes. A portion of the connecting pipes connects the primary filtration chamber and the outflow pipe, while another portion of the connecting pipes connects the secondary filtration chamber and the outflow pipe.

4. The oil filter for deep-frying ribbonfish according to claim 1, characterized in that, The recycling device is installed on the lower side of the corresponding filter carrier.

5. A method for filtering oil using an oil filter for deep-frying ribbonfish, employing the oil filter for deep-frying ribbonfish as described in claim 1, characterized in that... Includes the following steps: S1: Oil flows from the top of the coarse filter box into the primary filtration chamber under the action of gravity; S2: The oil passes through the filter cloth and flows into the inner side of the filter support tube through the holes on the filter support tube. Impurities are retained on the outer side of the filter cloth. The recovery device slides each support ring away from the secondary filtration chamber. S3: The delay device unfolds the filter cloth until the filter cloth is used up; S4: The oil in the filter carrier flows into the secondary filter chamber after passing through the filter grading plate.

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