A waste oil filtering and purifying device for a frying apparatus

Abstract

The application discloses a waste oil filtering and purifying device for frying equipment and relates to the technical field of edible oil filtering. The device comprises a shell, a frying pot, a hot oil device, an oil pump, a residue discharging assembly and a filtering assembly. The frying pot is installed on the top of the shell through a support. The bottom of the frying pot is provided with a lower oil pipe. The residue discharging assembly is arranged in the frying pot. The filtering assembly and the hot oil device are arranged in the shell. The filtering assembly is located below the lower oil pipe. The hot oil device is located on one side of the filtering assembly. The hot oil device is connected with the filtering assembly through a pipeline. An oil feeding pipe is connected between the hot oil device and the frying pot. The oil pump is connected to the middle part of the oil feeding pipe. Workers first add frying oil into the hot oil device. Then, a filter paper bag is installed on a material discharging roller. One end of a filter paper belt is wound on a material winding roller after penetrating through the filtering assembly. The hot oil device is started to heat the frying oil. The oil pump transmits the heated frying oil in the hot oil device to the frying pot.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of edible oil filtering, and particularly relates to a waste oil filtering and cleaning device for frying equipment. BACKGROUND

[0002] Restaurants that make fried food usually have frying equipment, and common frying equipment is a Western electric fryer. A lot of shortening is used when the electric fryer is used to fry food. After the oil in the frying pot is used for a period of time, a lot of food debris and powder coating is generated. When the food debris and powder coating are not cleaned in time and reach a certain amount, the food debris and powder coating are burned and carbonized to generate harmful substances such as polycyclic aromatic hydrocarbons and acrylamide, which have adverse effects on the oil product, and the safety of the fried food product is not guaranteed. Therefore, the electric fryer needs to be stopped, and the oil and oil residue in the electric fryer need to be discharged from the oil tank, filtered to remove the residue, and then the clean oil is returned to the oil tank. The oil filtering process takes a long time, and an operator needs to watch and operate the equipment. The oil filtering process occupies the operation time and manpower of the restaurant, and consumes more manpower and time, reduces the operation efficiency of the fast food restaurant, and further reduces the production capacity and sales of the restaurant. SUMMARY

[0003] The present application aims to provide a waste oil filtering and cleaning device for frying equipment to solve the problems in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a waste oil filtering and cleaning device for frying equipment, comprising a shell, a frying pot, a hot oil device, an oil pump, a residue discharging assembly and a filtering assembly, the frying pot is installed on the top of the shell through a support, the bottom of the frying pot is provided with a lower oil pipe, the residue discharging assembly is arranged in the frying pot, the filtering assembly and the hot oil device are arranged in the shell, the filtering assembly is located below the lower oil pipe, the hot oil device is located on one side of the filtering assembly, the hot oil device is connected with the filtering assembly through a pipeline, and a oil conveying pipe is connected between the hot oil device and the frying pot, before using the device, an operator first adds frying oil into the hot oil device, then installs a filter paper bag on a material feeding roller, one end of a filter paper belt is wound on a material winding roller after passing through the filtering assembly, the hot oil device is started to heat the frying oil, the oil pump transmits the heated frying oil in the hot oil device to the frying pot, and then the operator can fry food.

[0005] Further, the residue discharging assembly comprises an oil residue groove plate, an elastic push plate and a residue pipe, the oil residue groove plate is arranged on the top of the fryer, the residue pipe is installed on the bottom of the oil residue groove plate, the residue pipe penetrates through the bottom of the fryer and is communicated with the oil pipe, the elastic push plate is arranged on one side of the oil residue groove plate, the bottom of one side of the fryer is obliquely provided with a discharge hole, an oil inlet cover is arranged on the outside of the fryer corresponding to the position where the discharge hole is arranged, the hot oil is sent into the oil inlet cover through the oil pipe, and then the hot oil is uniformly flowed into the fryer through the discharge hole, as the oil amount is increased, the frying oil in the fryer is gradually filled in the oil residue groove plate, the frying oil overflowing the oil residue groove plate is flowed into the oil pipe through the residue pipe, and then is flowed into the filter assembly, as the discharge hole is obliquely arranged, the debris falling from the food during the frying is moved along the flowing direction of the frying oil, the debris sinking in the bottom of the fryer is moved to the direction of the residue discharging assembly, the debris floating on the oil surface is flowed into the oil residue groove plate along the overflowing oil, and then is flowed into the filter assembly.

[0006] Further, the residue discharging assembly comprises a pair of adapter blocks and a residue scraping net, the pair of adapter blocks are symmetrically arranged on the two sides of the fryer, a sliding groove is arranged on one side of each adapter block inside the fryer, the residue scraping net is slidably installed in the sliding groove of the pair of adapter blocks, magnets are arranged at the two edges of the residue scraping net in contact with the inner wall of the fryer, a joint sprocket is coaxially connected to one side of the adapter block away from the sliding groove, during the initial frying, the control system drives the servo motor to work, the servo motor drives the joint sprocket to rotate at a low speed through the driving sprocket and the outer chain, the joint sprocket drives the adapter block to rotate, the adapter block drives the residue scraping net to rotate, the residue scraping net is adsorbed to the inner wall of the fryer by the magnets during the rotation, when the residue scraping net rotates to the edge and cannot be adsorbed to the inner wall of the fryer, the residue scraping net slides to the other side along the sliding groove of the adapter block under the action of gravity, the elastic push plate keeps in contact with the surface of the residue scraping net during the side sliding, the oil residue caught by the residue scraping net is scraped off by the elastic push plate, and the oil residue scraped off by the elastic push plate is flowed into the oil residue groove plate and then is flowed into the filter assembly along the overflowing frying oil;

[0007] The oil residue sinking in the bottom of the fryer is impacted to one end of the fryer by the flowing frying oil, the side of the residue scraping net sliding down invades into the fryer and is adsorbed to the inner wall, the residue scraping net separates the oil residue flowing over, the residue scraping net lifts the oil residue in the bottom of the fryer as the residue scraping net rotates along the inner wall of the fryer, after the residue scraping net rotates and cannot be adsorbed to the inner wall of the fryer, the residue scraping net slides sideways, and the oil residue is scraped into the oil residue groove plate, the adapter block is arranged to drive the residue scraping net to rotate, the oil residue sinking in the bottom of the fryer is fished up, the oil residue fished up is scraped off by the residue scraping net by virtue of the characteristic that the residue scraping net can slide along the adapter block, the filter assembly realizes the effect of removing the floating and sinking frying oil residue, the frying oil is kept clean and clear, and the quality of the frying oil is improved.

[0008] Further, the filter assembly comprises a pair of inverted triangular side plates, two drawers are arranged from top to bottom between the pair of inverted triangular side plates, an oil receiving groove is arranged above the two drawers, the oil receiving groove and the two drawers are through from top to bottom, a grid drawer is slidingly installed in the upper drawer, a filter screen drawer is slidingly installed in the lower drawer, the overflow frying oil carrying oil residues flows into the oil receiving groove, then passes through the filtering of the grid drawer and the filter screen drawer, the larger oil residues are retained in the grid drawer, the fine oil residues are retained in the filter screen drawer, and the frying oil after twice filtering flows onto the filter paper belt.

[0009] Further, the two sides of the pair of inverted triangular side plates are symmetrically connected with sealing plates, and mesh plates are symmetrically arranged on the two sides of the pair of inverted triangular side plates, gaps are formed between the mesh plates and the sealing plates, the filter assembly comprises a feeding roller, a winding roller, a reversing roller and a replaceable filter paper belt, the feeding roller and the winding roller are rotatably installed at two top corners above the pair of inverted triangular side plates, the reversing roller is rotatably installed at a top corner below the pair of inverted triangular side plates, and a vacuum chamber is arranged below the pair of inverted triangular side plates, because the oil pump always pumps out the oil in the hot oil device, the pressure in the hot oil device is reduced, and because the hot oil device is connected with the vacuum chamber through the oil pumping pipe, the pressure in the vacuum chamber is reduced, the frying oil above the filter paper belt is accelerated to filter into the vacuum chamber under the action of air pressure, the particulate impurities that cannot be filtered by the grid drawer and the filter screen drawer are retained by the filter paper belt, and the clean frying oil is pumped into the hot oil device from the vacuum chamber to be heated again.

[0010] Further, the filter paper belt is wound on the feeding roller, the head end of the filter paper belt passes through the gap between the mesh plate and the sealing plate on one side, winds around the bottom of the reversing roller, passes through the gap between the mesh plate and the sealing plate on the other side, and is finally wound on the winding roller, one side of the winding roller is coaxially connected with a driven sprocket, the small sprocket on the joint sprocket drives the driven sprocket to rotate through the inner chain, the driven sprocket drives the winding roller to rotate, the winding roller winds the filter paper belt, the filter paper belt retaining too many particulate impurities is wound up, and the unused filter paper belt is unwound from the feeding roller, the filter paper belt with reduced filtering performance is replaced, and the frying oil is quickly filtered.

[0011] Further, a servo motor is arranged in the housing, a driving sprocket is installed on the motor shaft of the servo motor, the joint sprocket is composed of a large sprocket and a small sprocket, an outer chain is connected between the large sprocket and the driving sprocket, and an inner chain is connected between the small sprocket and the driven sprocket, through the separation of the hot oil device and the deep fryer, the accumulation and carbonization of food debris in the deep fryer are effectively prevented, the deterioration of oil quality is avoided, and carcinogens are avoided, because the frying oil has been filtered clean before entering the hot oil device, the frying oil is further prevented from sticking to the heating source, and the trouble of cleaning the heating source is avoided.

[0012] Furthermore, an oil extraction pipe is connected between the vacuum chamber and the oil heater. One end of the oil delivery pipe is connected to the oil heater, and the other end is connected to the oil inlet hood. A two-position two-way solenoid valve is installed on both the oil supply pipe and the oil delivery pipe. A waste oil pipe is connected to each of the two two-position two-way solenoid valves. The two waste oil pipes are merged into one and extend out of the outer casing. When the frying oil reaches the end of its service life, the control system controls the two two-position two-way solenoid valves to change the oil path, so that the frying oil in the fryer flows directly down from the waste oil pipe. The frying oil in the oil heater is also discharged through the waste oil pipe. The operator uses a waste oil bucket to collect the oil discharged from the waste oil pipe, saving the cooling time of the frying oil in the fryer, improving the operating efficiency of the fast food restaurant, and avoiding the risk of burns to the operator during the transfer of waste oil.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up a transfer block to drive the scraper screen to rotate, the oil residue that has sunk to the bottom of the pot is scooped up. The scraper screen can slide along the transfer block to scrape off the oil residue that has been scooped up. The filter component achieves the function of removing floating and sinking frying oil residue, while keeping the frying oil clean and clear, thus improving the quality of the frying oil.

[0015] 2. By separating the oil heater from the fryer, the accumulation of food debris and burning / carbonization in the fryer are effectively prevented, thus avoiding the deterioration of oil quality and the production of carcinogens. Since the oil is filtered before entering the oil heater, it further prevents the oil from sticking to the heating source, eliminating the hassle of cleaning the heating source. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure One ;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure Two ;

[0019] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure Three ;

[0020] Figure 5 This is a schematic diagram of the slag discharge component of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the filter assembly and the hot oil heater of the present invention.

[0022] Figure 7This is a schematic diagram of the structure of the filter component of the present invention. Figure One .

[0023] Figure 8 This is a schematic diagram of the structure of the filter component of the present invention. Figure Two .

[0024] In the diagram: 1. Outer shell; 2. Deep fryer; 3. Oil residue trough plate; 4. Elastic lever plate; 5. Slag scraper; 6. Transfer block; 7. Slag discharge pipe; 8. Oil inlet hood; 9. Combined sprocket; 10. Oil discharge pipe; 11. Inverted triangular side plate; 12. Oil receiving trough; 13. Grille drawer; 14. Filter drawer; 15. Feeding roller; 16. Rolling roller; 17. Reversing roller; 18. Sealing plate; 19. Mesh plate; 20. Vacuum chamber; 21. Oil extraction pipe; 22. Oil delivery pipe; 23. Oil heater; 24. Oil pump; 25. Waste oil pipe; 26. Driven sprocket; 27. Drive sprocket; 28. Inner chain; 29. ​​Outer chain; 30. Servo motor. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: Figures 1-8 As shown, the present invention provides a technical solution: a waste oil filtration and treatment device for frying equipment, comprising a shell 1, a fryer 2, an oil heater 23, an oil pump 24, a slag discharge assembly, and a filter assembly. The fryer 2 is mounted on the top of the shell 1 via a bracket, and a drain pipe 10 is provided at the bottom of the fryer 2. The slag discharge assembly is disposed in the fryer 2, and the filter assembly and the oil heater 23 are disposed inside the shell 1. The filter assembly is located below the drain pipe 10, and the oil heater 23 is located on one side of the filter assembly. The oil heater 23 and the filter assembly... The device is connected by a pipe, with an oil supply pipe 22 connecting the oil heater 23 and the fryer 2. An oil pump 24 is connected to the middle of the oil supply pipe 22. Before using the device, the operator first adds cooking oil to the oil heater 23, then installs the filter paper bag on the feeding roller 15. One end of the filter paper strip passes through the filter assembly and is wound around the rolling roller 16. The oil heater 23 is then started to heat the cooking oil. The oil pump 24 transfers the heated cooking oil in the oil heater 23 to the fryer 2, and the operator can then fry the food.

[0027] The residue discharging assembly comprises an oil residue groove plate 3, an elastic push plate 4 and a residue discharging pipe 7. The oil residue groove plate 3 is arranged on the top of the fryer 2. The residue discharging pipe 7 is installed on the bottom of the oil residue groove plate 3 and penetrates through the bottom of the fryer 2 and communicates with the oil discharging pipe 10. The elastic push plate 4 is arranged on one side of the oil residue groove plate 3. A discharge hole is obliquely arranged on the bottom of one side of the fryer 2. An oil inlet cover 8 is arranged on the outside of the fryer 2 corresponding to the position of the discharge hole. The residue discharging assembly comprises a pair of adapter blocks 6 and a residue scraping net 5. The pair of adapter blocks 6 are symmetrically arranged on the two sides of the fryer 2. A sliding groove is arranged on one side of each adapter block 6 inside the fryer 2. The residue scraping net 5 is slidingly installed in the sliding groove of the pair of adapter blocks 6. Magnets are arranged on the two edges of the residue scraping net 5 in contact with the inner wall of the fryer 2. A joint sprocket 9 is coaxially connected to one side of each adapter block 6 away from the sliding groove. The oil feeding pipe 22 feeds hot oil into the oil inlet cover 8 and then uniformly flows into the fryer 2 through the discharge hole. As the oil quantity increases, the frying oil in the fryer 2 gradually overflows the oil residue groove plate 3. The frying oil overflowing the oil residue groove plate 3 flows into the oil discharging pipe 10 through the residue discharging pipe 7 and then flows into the filtering assembly. Since the discharge hole is obliquely arranged, the debris falling from the fried food moves along the direction of the flow of the frying oil during the frying process. The debris sinking to the bottom of the fryer moves towards the residue discharging assembly. The debris floating on the oil surface flows into the oil residue groove plate 3 along with the overflow of the oil and then flows into the filtering assembly.

[0028] During the initial frying process, the control system drives the servo motor 30 to work. The servo motor 30 drives the joint sprocket 9 to rotate at a low speed through the driving sprocket 27 and the outer chain 29. The joint sprocket 9 drives the adapter block 6 to rotate. The adapter block 6 drives the residue scraping net 5 to rotate. The residue scraping net 5 is adsorbed to the inner wall of the fryer 2 by the magnets during the rotation. When the residue scraping net 5 rotates to the edge and cannot be adsorbed to the inner wall of the fryer 2, the residue scraping net 5 slides to the other side along the sliding groove of the adapter block 6 under the action of gravity. The elastic push plate 4 keeps in contact with the surface of the residue scraping net 5 during the side sliding. The oil residue scraped by the elastic push plate 4 from the residue scraping net 5 enters the oil residue groove plate 3 and then flows into the filtering assembly along with the overflow of the frying oil;

[0029] The oil residue sinking to the bottom of the fryer 2 is impacted by the flowing frying oil to one end of the fryer 2. The oil residue sliding down the residue scraping net 5 invades into the fryer 2 and is adsorbed to the inner wall. The residue scraping net 5 separates the incoming oil residue. The residue scraping net 5 lifts the oil residue on the bottom of the fryer 2 as it rotates along the inner wall of the fryer 2. When the residue scraping net 5 cannot be adsorbed to the inner wall of the fryer 2 during the rotation, the residue scraping net 5 slides sideways and scrapes the oil residue into the oil residue groove plate 3. The adapter block 6 drives the residue scraping net 5 to rotate and lift the oil residue sinking to the bottom of the fryer 2. The residue scraping net 5 can scrape the lifted oil residue by sliding along the adapter block 6. The filtering assembly removes the floating and sinking oil residue. The frying oil remains clean and clear, which improves the quality of the frying oil.

[0030] The filter assembly comprises a pair of inverted triangular side plates 11, two drawers are arranged between the pair of inverted triangular side plates 11 from top to bottom, an oil receiving groove 12 is arranged above the two drawers, the oil receiving groove 12 and the two drawers are through from top to bottom, a grid drawer 13 is slidingly installed in the upper drawer, a filter screen drawer 14 is slidingly installed in the lower drawer, sealing plates 18 are symmetrically connected to the two sides of the pair of inverted triangular side plates 11, mesh plates 19 are symmetrically arranged on the two sides of the pair of inverted triangular side plates 11, and gaps exist between the mesh plates 19 and the sealing plates 18, the filter assembly comprises a feeding roller 15, a winding roller 16, a reversing roller 17 and a replaceable filter paper belt (not shown in the figure), the feeding roller 15 and the winding roller 16 are rotatably installed at two top corners above the pair of inverted triangular side plates 11, the reversing roller 17 is rotatably installed at a top corner below the pair of inverted triangular side plates 11, a vacuum chamber 20 is arranged below the pair of inverted triangular side plates 11, the filter paper belt is wound on the feeding roller 15, a head end of the filter paper belt first passes through the gap between the mesh plate 19 and the sealing plate 18 on one side, then winds around the bottom of the reversing roller 17, then passes out from the gap between the mesh plate 19 and the sealing plate 18 on the other side, and finally is wound on the winding roller 16, and a driven sprocket 26 is coaxially connected to one side of the winding roller 16.

[0031] The overflow frying oil carries oil residues and flows into the oil receiving groove 12, and then is filtered through the grid drawer 13 and the filter screen drawer 14, so that larger oil residues are retained in the grid drawer 13 and fine oil residues are retained in the filter screen drawer 14, the frying oil filtered twice flows onto the filter paper belt, because the oil pump 24 always pumps out the oil in the hot oiler 23, the pressure in the hot oiler 23 is reduced, and because the hot oiler 23 is connected to the vacuum chamber 20 through the oil pumping pipe 21, the pressure in the vacuum chamber 20 is also reduced, the frying oil above the filter paper belt is accelerated to be filtered into the vacuum chamber 20 under the action of air pressure, and the particulate impurities that cannot be filtered by the grid drawer 13 and the filter screen drawer 14 are retained by the filter paper belt, and the clean frying oil is pumped from the vacuum chamber 20 into the hot oiler 23 to be heated again.

[0032] The shell 1 is internally provided with a servo motor 30, a driving sprocket 27 is installed on the motor shaft of the servo motor 30, the combined sprocket 9 is composed of a large sprocket and a small sprocket, the large sprocket is connected with the driving sprocket 27 through the outer chain 29, the small sprocket is connected with the driven sprocket 26 through the inner chain 28, the small sprocket on the combined sprocket 9 drives the driven sprocket 26 to rotate through the inner chain 28, the driven sprocket 26 drives the material winding roller 16 to rotate, the material winding roller 16 winds the filter paper belt, the filter paper belt with too many impurities is wound up, and the filter paper belt without use is unwound from the material unwinding roller 15, the paper belt with reduced filtering performance is replaced, and the frying oil is rapidly filtered.

[0033] The vacuum chamber 20 is connected with the hot oil device 23 through an oil pumping pipe 21, one end of an oil feeding pipe 22 is connected with the hot oil device 23, and the other end of the oil feeding pipe 22 is connected with the oil inlet cover 8. The oil outlet pipe 10 and the oil feeding pipe 22 are both provided with two-position two-way electromagnetic reversing valves, and the two two-position two-way electromagnetic reversing valves are both connected with waste oil pipes 25. The two waste oil pipes 25 are combined into one pipe extending out of the shell 1. When the service life of the frying oil expires, the control system controls the two two-position two-way electromagnetic reversing valves to change the oil circuit, so that the frying oil in the frying pot 2 directly flows down from the waste oil pipe 25, and the frying oil in the hot oil device 23 is also discharged through the waste oil pipe 25. The operator collects the oil discharged from the waste oil pipe 25 by using a waste oil bucket, thereby saving the cooling time of the frying oil in the frying pot 2, improving the operation efficiency of the fast food restaurant, and avoiding the risk of scalding the operator in the process of transferring the waste oil.

[0034] The working principle of the present application is as follows: before using the device, the operator first adds frying oil into the hot oil device 23, then installs the filter paper bag on the material unwinding roller 15, one end of the filter paper belt is wound on the material winding roller 16 after passing through the filter assembly, the hot oil device 23 is started to heat the frying oil, the oil pump 24 transmits the heated frying oil in the hot oil device 23 to the frying pot 2, and then the operator can proceed with the food frying.

[0035] The oil feeding pipe 22 sends hot oil into the oil inlet cover 8, and then uniformly flows into the frying pot 2 from the discharge holes. As the oil amount increases, the frying oil in the frying pot 2 gradually fills the oil residue groove plate 3, the frying oil overflowing the oil residue groove plate 3 flows into the oil outlet pipe 10 through the oil residue pipe 7, and then flows into the filter assembly. Since the discharge holes are obliquely arranged, the debris falling from the fried food moves along the direction of the flow of the frying oil, the debris sinking to the bottom of the pot moves towards the residue discharging assembly, the debris floating on the oil surface enters the oil residue groove plate 3 along with the overflow of the oil, and then flows into the filter assembly.

[0036] In the process of starting frying, the control system drives the servo motor 30 to work, the servo motor 30 drives the joint sprocket 9 to rotate at low speed through the driving chain wheel 27 and the outer chain 29, the joint sprocket 9 drives the adapter block 6 to rotate, the adapter block 6 drives the slag scraping net 5 to rotate, the slag scraping net 5 is adsorbed on the inner wall of the frying pot 2 in the process of rotating by using the magnet, when the slag scraping net 5 rotates to the edge and cannot be adsorbed on the inner wall of the frying pot 2, the slag scraping net 5 will slide to the other side along the sliding groove of the adapter block 6 under the action of gravity, in the process of side sliding, the elastic push plate 4 keeps contact with the surface of the slag scraping net 5, the oil residue brought up by the slag scraping net 5 is scraped off, the oil residue scraped off by the elastic push plate 4 enters the oil residue groove plate 3, along with the overflow frying oil, into the filter assembly;

[0037] The oil residue sinking at the bottom of the pot is impacted to one end of the frying pot 2 by the flowing frying oil, along with the side of the slag scraping net 5 sliding down, invades into the frying pot 2 and is adsorbed on the inner wall, the slag scraping net 5 separates the oil residue coming over, along with the slag scraping net 5 rotating along the inner wall of the frying pot 2, the slag scraping net 5 brings up the oil residue at the bottom of the pot, after the slag scraping net 5 rotates and cannot be adsorbed on the inner wall of the frying pot 2, the slag scraping net 5 slides sideways, scrapes the oil residue into the oil residue groove plate 3, the slag scraping net 5 is driven to rotate by the adapter block 6, the oil residue sinking at the bottom of the pot is fished up, the oil residue brought up is scraped off by using the characteristic that the slag scraping net 5 can slide along the adapter block 6, the filter assembly realizes the effect of removing the frying oil residue floating and sinking at the bottom, at the same time, the frying oil remains clean and clear, the quality of the frying oil is improved.

[0038] The overflow frying oil carrying the oil residue flows into the oil receiving groove 12, then is filtered through the grating drawer 13 and the filter screen drawer 14, the larger oil residue is intercepted in the grating drawer 13, the fine oil residue is intercepted in the filter screen drawer 14, the frying oil filtered twice flows onto the filter paper belt, because the oil pump 24 always pumps out the oil in the hot oil device 23, the pressure in the hot oil device 23 is reduced, because the hot oil device 23 is connected with the vacuum chamber 20 through the oil pumping pipe 21, the pressure inside the vacuum chamber 20 is reduced, the frying oil above the filter paper belt is filtered into the vacuum chamber 20 under the action of air pressure, the particulate impurities that cannot be filtered by the grating drawer 13 and the filter screen drawer 14 are intercepted by the filter paper belt, the clean frying oil is pumped into the hot oil device 23 from the vacuum chamber 20 to be heated again.

[0039] The small sprocket on the joint sprocket wheel 9 drives the driven sprocket wheel 26 through the inner chain 28, the driven sprocket wheel 26 drives the material roll 16, the material roll 16 winds the filter paper, the filter paper with too many impurities is wound up, the unused filter paper is unwound from the material roll 15, the filter paper with reduced filtering performance is replaced, and the frying oil is quickly filtered. By separating the hot oil device 23 from the fryer 2, food debris accumulation and carbonization in the fryer 2 are effectively prevented, and the deterioration of oil quality to produce carcinogens is avoided. Since the frying oil has been filtered before entering the hot oil device 23, the fried food is further prevented from sticking to the heating source, and the trouble of cleaning the heating source is avoided.

[0040] When the service life of the frying oil expires, the control system controls the two two-position two-way electromagnetic reversing valves to change the oil circuit, so that the frying oil in the fryer 2 directly flows down from the waste oil pipe 25, and the frying oil in the hot oil device 23 is also discharged through the waste oil pipe 25. The operator collects the oil discharged from the waste oil pipe 25 with a waste oil bucket, saves the cooling time of the frying oil in the fryer 2, improves the operation efficiency of the fast food restaurant, and avoids the risk of scalding the operator during the process of transferring waste oil.

[0041] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A waste oil filtration and treatment device for frying equipment, characterized in that: The device includes an outer shell (1), a deep fryer (2), an oil heater (23), an oil pump (24), a slag removal assembly, and a filter assembly. The deep fryer (2) is mounted on the top of the outer shell (1) by a bracket. A lower oil pipe (10) is provided at the bottom of the deep fryer (2). The slag removal assembly is located in the deep fryer (2). The filter assembly and the oil heater (23) are located inside the outer shell (1). The filter assembly is located below the lower oil pipe (10). The oil heater (23) is located on one side of the filter assembly. The oil heater (23) is connected to the filter assembly by a pipe. An oil delivery pipe (22) is connected between the oil heater (23) and the deep fryer (2). The oil pump (24) is connected to the middle of the oil delivery pipe (22). The slag discharge assembly includes an oil slag trough plate (3), an elastic lever plate (4), and a slag discharge pipe (7). The oil slag trough plate (3) is set on the top of the fryer (2), and the slag discharge pipe (7) is installed at the bottom of the oil slag trough plate (3). The slag discharge pipe (7) passes through the bottom of the fryer (2) and is connected to the oil discharge pipe (10). The elastic lever plate (4) is set on one side of the oil slag trough plate (3). A discharge hole is obliquely opened on the bottom side of the fryer (2), and an oil inlet cover (8) is set on the outside of the fryer (2) corresponding to the opening of the discharge hole. The slag discharge assembly also includes a pair of adapter blocks (6) and a slag scraper (5). The pair of adapter blocks (6) are symmetrically arranged on both sides of the fryer (2). Each adapter block (6) has a groove on one side inside the fryer (2). The slag scraper (5) is slidably installed in the groove of the pair of adapter blocks (6). Magnets are provided at the two edges of the slag scraper (5) that are in contact with the inner wall of the fryer (2). A combined sprocket (9) is coaxially connected to the side of one adapter block (6) away from the groove. The filter assembly includes a pair of inverted triangular side plates (11), and two drawers are arranged from top to bottom between the pair of inverted triangular side plates (11). An oil receiving groove (12) is provided above the two drawers. The oil receiving groove (12) and the two drawers are connected vertically. A grid drawer (13) is slidably installed in the upper drawer, and a filter drawer (14) is slidably installed in the lower drawer.

2. The waste oil filtration and treatment device for frying equipment according to claim 1, characterized in that: A sealing plate (18) is symmetrically connected to both sides of the pair of inverted triangular side plates (11). A mesh plate (19) is also symmetrically arranged on both sides of the pair of inverted triangular side plates (11). There is a gap between the mesh plate (19) and the sealing plate (18). The filter assembly also includes a feeding roller (15), a winding roller (16), a reversing roller (17), and a replaceable filter paper tape. The feeding roller (15) and the winding roller (16) are rotatably installed at the two apex corners above the pair of inverted triangular side plates (11). The reversing roller (17) is rotatably installed at the apex corner below the pair of inverted triangular side plates (11). A vacuum chamber (20) is arranged below the pair of inverted triangular side plates (11).

3. The waste oil filtration and treatment device for frying equipment according to claim 2, characterized in that: The filter paper tape is wound on the feed roller (15). The head end of the filter paper tape first passes through the gap between the mesh plate (19) and the sealing plate (18) on one side, then goes around the bottom of the reversing roller (17), then comes out from the gap between the mesh plate (19) and the sealing plate (18) on the other side, and finally wraps around the winding roller (16). A driven sprocket (26) is coaxially connected to one side of the winding roller (16).

4. The waste oil filtration and treatment device for frying equipment according to claim 3, characterized in that: The housing (1) is equipped with a servo motor (30), and a drive sprocket (27) is mounted on the motor shaft of the servo motor (30). The combined sprocket (9) is composed of a large sprocket and a small sprocket. An outer chain (29) is connected between the large sprocket and the drive sprocket (27), and an inner chain (28) is connected between the small sprocket and the driven sprocket (26).

5. The waste oil filtration and treatment device for frying equipment according to claim 2, characterized in that: The vacuum chamber (20) is connected to the hot oil heater (23) by an oil extraction pipe (21). One end of the oil delivery pipe (22) is connected to the hot oil heater (23), and the other end of the oil delivery pipe (22) is connected to the oil inlet cover (8). A two-position two-way solenoid valve is installed on both the lower oil pipe (10) and the oil delivery pipe (22). A waste oil pipe (25) is connected to both of the two two-position two-way solenoid valves. The two waste oil pipes (25) are combined into one and extend out of the outer shell (1).

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