Animal fat smelting equipment

Abstract

Animal oil and fat smelting equipment relates to the technical field of animal oil and fat processing equipment and comprises a crushing box and a smelting box arranged below the crushing box, a primary smelting cylinder is arranged in the smelting box, a secondary smelting cylinder is arranged below the primary smelting cylinder, and oil residues cooked by the primary smelting box are further crushed by a spiral conveying mechanism and then conveyed to the secondary smelting cylinder; an oil squeezing roller and a scraper blade are arranged in the secondary smelting cylinder, the oil squeezing roller and the scraper blade are driven by a planetary gear driving mechanism to rotate in the circumferential direction of the inner wall of the secondary smelting cylinder, and the oil squeezing roller is arranged on a planet carrier of the driving mechanism in a sliding mode through a sliding mechanism and is driven by the driving mechanism to rotate around the axis of the secondary smelting cylinder; under the action of centrifugal force, the oil residue slides to the inner side wall to extrude the oil residue, so that the oil yield is further improved; meanwhile, the scraper is driven by the planet wheel of the driving mechanism to rotate around the inner side wall of the secondary smelting cylinder, oil residues adhering to the wall are scraped, and pan sticking is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of animal fat processing equipment, and in particular to animal fat smelting equipment. Background Art

[0002] Animal fats are fats obtained from animals. They can be divided into fats from terrestrial warm-blooded animals and poultry, such as tallow, mutton tallow, lard, etc., which are generally solid and their main components are triglycerides of palmitic acid and stearic acid; fats from marine mammals and fish, such as whale oil and fish oil. They are mainly for food, such as lard, beef tallow, mutton tallow, etc. They are also widely used in the manufacture of hardened oil, soap, glycerin, lubricating oil, leather industry and medicines; fish oil is the raw material for preparing paint. It is obtained by boiling.

[0003] At present, the existing animal fat smelting equipment usually has only one smelting cylinder. For example, the patent document CN113773905B discloses a refining device for animal fat production, which cannot fully squeeze the animal fat, so that some oil residues still have residual fat, making it difficult to fully utilize the animal fat raw materials and reducing the oil yield. The smelted oil residue usually needs to be transported to a separate oil residue oil pressing equipment, such as a tile machine, through a conveying mechanism for processing, resulting in an increase in the investment cost and operating cost of the production equipment, and a large area is occupied, which increases the production cost. Summary of the invention

[0004] In view of the problems and shortcomings in the prior art, the present invention provides an animal fat smelting device.

[0005] The technical solution of the present invention is as follows:

[0006] An animal fat smelting device comprises a crushing box and a smelting box arranged below the crushing box, a primary smelting cylinder is arranged in the smelting box, a spiral conveying mechanism is arranged in the primary smelting cylinder, and an oil filter hole is arranged at the bottom;

[0007] A secondary smelting cylinder and an oil filtering mechanism are also provided in the smelting box. The secondary smelting cylinder is located below the outlet of the primary smelting cylinder, parallel to its axis and offset in its rear half, with oil filtering holes provided at the bottom. The oil filtering mechanism includes two layers of filter plates arranged upper and lower and a moving mechanism for driving the filter plates to move up and down.

[0008] Specifically, the primary smelting cylinder is connected to the secondary smelting cylinder through the outlet of the primary smelting cylinder, the oil filter hole of the primary smelting cylinder is located on the left side of the outlet, the secondary smelting cylinder is located on the right side of the oil filter hole of the primary smelting cylinder, the oil filter hole of the secondary smelting cylinder is located on the left side, a slag discharge hole is provided on the right side of the oil filter hole, and a slag collecting box is provided below the slag discharge hole.

[0009] The secondary smelting cylinder is provided with an oil squeezing roller and a scraper, which rotates circumferentially along the inner wall of the secondary smelting cylinder under the drive of the driving mechanism;

[0010] The driving mechanism is a planetary gear mechanism, including two sun gears arranged at one end of the secondary smelting cylinder, planetary gears meshing with the sun gears, and a planet carrier connecting the sun gears and the planetary gears;

[0011] The planetary frame is a cross structure with four connecting frames, two of which are in line with each other and are rotatably connected to planetary wheels, which are connected to the scraper through shafts, and the other two connecting frames are connected to the oil squeezing rollers through sliding mechanisms.

[0012] Specifically, the two sun gears are respectively an inner gear ring and an outer gear meshing with the planetary gears, wherein the inner gear ring is fixed on the right end side wall of the secondary smelting cylinder, the outer gear is connected to the motor through a transmission shaft, the planetary carrier is rotatably connected to the transmission shaft through a bearing, the planetary gear is rotatably connected to the planetary carrier, and the planetary gear is coaxially connected to the scraper through an axis, the oil squeezing roller is coaxially arranged with the scraper, and both are arranged along the axis of the secondary smelting cylinder, wherein the scraper and the oil squeezing roller are located inside the secondary smelting cylinder, and the driving mechanism is located outside the secondary smelting cylinder and connected to its right end.

[0013] The sliding mechanism includes a slide groove which is arranged on the connecting frame and extends radially along the secondary smelting cylinder, a first slider which is slidably matched with the slide groove, one end of the first slider which is close to the center of the planetary frame is radially connected to a spring between the slide groove, and the other end is slidably matched with a guide rod which is arranged along the extension direction of the slide groove, and the center is rotationally connected to the oil squeezing roller through a shaft.

[0014] Specifically, a bearing is provided inside the slider, and the oil squeezing roller is rotatably connected to the slider through the cooperation of the shaft and the bearing, and can slide along the slide groove arranged along the radial direction of the secondary smelting cylinder under the drive of the slider, so that when the secondary smelting cylinder is working, the oil squeezing roller is driven by the driving mechanism to move toward the inner wall of the secondary smelting cylinder under the action of centrifugal force to roll and squeeze the oil residue.

[0015] Working principle:

[0016] The animal raw materials to be smelted are put into a crushing box for pulverization, and the crushed pieces enter the primary smelting box for smelting. The oil smelted in the primary smelting box falls into the filter plate below through the oil filter holes at the bottom of the primary smelting box, and the oil filtered by the filter plate enters the collection box below; the oil residue smelted in the primary smelting box is transported to the secondary smelting cylinder by the screw conveying mechanism, and the secondary smelting cylinder operates to reheat the oil residue. At the same time, the oil squeezing roller is driven by the driving mechanism around the axis of the secondary smelting cylinder and moves away from the secondary smelting cylinder. The centrifugal force squeezes the oil residue by sliding toward the inner wall of the secondary smelting cylinder, so that the remaining grease in the oil residue is squeezed out, and at the same time the heating temperature of the secondary smelting cylinder is increased to further increase the oil yield. Subsequently, the oil refined by the secondary smelting cylinder falls downward onto the filter plate through the oil filter holes at the bottom thereof, and the oil filtered by the filter plate enters the collection box below. In addition, while the oil squeezing roller rotates, the scraper rotates around the inner wall of the secondary smelting cylinder driven by the driving mechanism to scrape off the oil residue stuck to the inner wall of the secondary smelting cylinder.

[0017] The spring of the sliding mechanism is coaxially arranged in the slide groove with the guide rod, and the length of the guide rod is less than the length of the spring in the free state. The guide rod is used to balance the first slider to prevent the first slider from deflecting when the spring is pulled obliquely, resulting in an increase in its sliding resistance in the slide groove, resulting in the problem of sliding obstruction.

[0018] The rear half of the screw conveyor is provided with a plurality of cross blades, which are arranged axially at intervals between the spiral blades of the screw conveyor, and are used to further crush the oil residue after being smelted in the primary smelting cylinder, thereby improving the smelting efficiency and oil yield after entering the secondary smelting cylinder.

[0019] The outer circumference of the oil squeezing roller is provided with a plurality of circular protrusions, which are used to increase the contact rate between the oil squeezing roller and oil residues of various shapes and enhance the oil squeezing effect.

[0020] The scraper includes a scraper shaft and scrapers, the scraper shaft is connected to the planetary gear, and the scrapers are arranged in a circumferential array on the scraper shaft and located in the secondary smelting cylinder. The scraper rotates while rotating around the circumference of the secondary smelting cylinder, and there are multiple circumferentially arranged scrapers, which increases the number of contacts between the scraper and the secondary smelting cylinder, thereby reducing the oil residue sticking to the inner wall of the secondary smelting cylinder, improving the smelting efficiency, and preventing the oil residue from clogging the oil filter hole.

[0021] In order to improve the filtering efficiency of the filter plate, the filter plate is driven to reciprocate up and down by a moving mechanism. The moving mechanism that drives the filter plate to move up and down includes a motor, a driving shaft, a driving gear, a driven gear, a connecting rod and a second slider; the motor drives and connects the driving shaft, the axis of the driving shaft is parallel to the axis of the secondary smelting cylinder and is located below the filter plate, the driving gear is connected to the driving shaft, the driven gear is meshed with the driving gear and the axes are crossed and perpendicular, one end of the connecting rod is eccentrically hinged to the driven gear, and the other end is hinged to the second slider, the upper end of the second slider is fixedly connected to the filter plate, and the two sides slide up and down with the side walls of the smelting box. Specifically, the driving gear and the driven gear are bevel gears or helical gears.

[0022] In order to improve the stability of the movement of the filter plate, the driving gear, the driven gear, the connecting rod and the second sliding block are provided in two groups and are arranged at intervals along the length direction of the driving shaft.

[0023] The filter plate comprises an upper filter plate and a lower filter plate connected up and down, the upper filter plate is located on one side of the secondary smelting cylinder below the primary smelting cylinder, the lower filter plate is located below the secondary smelting cylinder, and both have oil filter holes that pass through from top to bottom, wherein the length of the upper filter plate can cover the length of the oil filter holes of the primary smelting cylinder, and the length of the lower filter plate can cover the length of the oil filter holes of the primary smelting cylinder and the secondary smelting cylinder.

[0024] Heating elements are arranged on the outer side walls of the primary smelting cylinder and the secondary smelting cylinder.

[0025] The beneficial effects of the present invention are:

[0026] A secondary smelting cylinder is arranged below the primary smelting cylinder. The oil residue after smelting in the primary smelting box is further crushed by the screw conveying mechanism and then conveyed to the secondary smelting cylinder. The secondary smelting cylinder is provided with an oil squeezing roller and a scraper, which rotates circumferentially along the inner wall of the secondary smelting cylinder under the drive of the driving mechanism.

[0027] The oil residue is reheated in the secondary smelting cylinder. At the same time, the oil squeezing roller rotates around the axis of the secondary smelting cylinder under the drive of the driving mechanism, and slides toward the inner wall of the secondary smelting cylinder under the action of centrifugal force to squeeze the oil residue, so that the remaining grease in the oil residue is squeezed out, further improving the oil yield; in addition, while the oil squeezing roller rotates, the scraper rotates around the inner wall of the secondary smelting cylinder under the drive of the driving mechanism to scrape off the oil residue stuck to the inner wall of the secondary smelting cylinder to prevent sticking to the pot. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of an embodiment;

[0029] Figure 2 It is a left sectional view of the embodiment;

[0030] Figure 3 It is a partial enlarged view of the driving mechanism;

[0031] Figure 4 is a cross-sectional view of a secondary smelting cylinder;

[0032] Figure 5 It is a partial enlarged view of the moving mechanism;

[0033] 1. Crushing box; 2. Primary smelting cylinder; 21. Screw conveying mechanism; 211. Cross blade; 3. Secondary smelting cylinder; 31. Oil squeezing roller; 32. Scraper; 33. Driving mechanism; 34. Planetary gear; 35. Planetary carrier; 351. Slide; 352. First slider; 353. Spring; 354. Guide rod; 4. Oil filtering mechanism; 41. Motor; 42. Driving shaft; 43. Driving gear; 44. Driven gear; 45. Connecting rod; 46. Second slider; 47. Filter plate. DETAILED DESCRIPTION

[0034] The technical means adopted to achieve the predetermined inventive objectives of the present invention will be further described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1 and Figure 2 As shown, Figure 1 is a cross-sectional view of an embodiment of the present invention, Figure 2 It is a left sectional view of an embodiment of the present invention.

[0036] An animal fat smelting device comprises a crushing box 1 and a smelting box arranged below the crushing box, a primary smelting cylinder 2 is arranged in the smelting box, a spiral conveying mechanism 21 is arranged in the primary smelting cylinder 2, and an oil filter hole is arranged at the bottom;

[0037] A secondary smelting cylinder 3 and an oil filtering mechanism 4 are also provided in the smelting box. The secondary smelting cylinder 3 is located below the outlet of the primary smelting cylinder 2, parallel to its axis and offset in its rear half, with oil filtering holes provided at the bottom. The oil filtering mechanism 4 includes two layers of filter plates 47 arranged up and down and a moving mechanism for driving the filter plates 47 to move up and down.

[0038] Specifically, the primary smelting cylinder 2 is connected to the secondary smelting cylinder 3 through the outlet of the primary smelting cylinder 2. The oil filter hole of the primary smelting cylinder 2 is located on the left side of the outlet, and the secondary smelting cylinder 3 is located on the right side of the oil filter hole of the primary smelting cylinder 2. The oil filter hole of the secondary smelting cylinder 3 is located on the left side, and a slag discharge hole is provided on the right side of the oil filter hole, and a slag collecting box is provided below the slag discharge hole.

[0039] See also Figure 1 and Figure 4 As shown, Figure 4 It is a cross-sectional view of the secondary smelting cylinder 3.

[0040] An oil squeezing roller 31 , a scraper 32 and a driving mechanism 33 are arranged in the secondary smelting cylinder 3 . The oil squeezing roller 31 and the scraper 32 rotate circumferentially along the inner wall of the secondary smelting cylinder 3 under the drive of the driving mechanism 33 .

[0041] See also Figure 3 As shown, Figure 3 It is a partial enlarged view of the driving mechanism 33.

[0042] The driving mechanism 33 is a planetary gear mechanism, including two sun gears arranged at one end of the secondary smelting cylinder 3, planetary gears 34 meshing with the sun gears, and a planet carrier 35 connecting the sun gears and the planetary gears 34;

[0043] The planetary frame 35 is a cross structure with four connecting frames, two of which are in line with each other and are rotatably connected to the planetary gears 34, which are connected to the scraper 32 via shafts, and the other two connecting frames are connected to the oil squeezing rollers 31 via sliding mechanisms.

[0044] Specifically, the two sun gears are respectively an inner gear ring and an outer gear meshing with the planetary gear 34, wherein the inner gear ring is fixed on the right end side wall of the secondary smelting cylinder 3, the outer gear is connected to the motor 41 through a transmission shaft, the planetary carrier 35 is rotatably connected to the transmission shaft through a bearing, the planetary gear 34 is rotatably connected to the planetary carrier 35, and the planetary gear 34 is coaxially connected to the scraper 32 through an axis, the oil squeezing roller 31 is coaxially arranged with the scraper 32, and both are arranged along the axis of the secondary smelting cylinder 3, wherein the scraper 32 and the oil squeezing roller 31 are located inside the secondary smelting cylinder 3, and the driving mechanism 33 is located outside the secondary smelting cylinder 3 and connected to its right end.

[0045] The sliding mechanism includes a slide groove 351 arranged on the connecting frame and extending radially along the secondary smelting cylinder 3, a first slider 352 slidingly matched with the slide groove 351, a spring 353 radially connected between one end of the first slider 352 close to the center of the planetary frame 35 and the slide groove 351, and the other end slidingly matched with a guide rod 354 arranged along the extension direction of the slide groove 351, and the center is rotationally connected to the oil squeezing roller 31 through an axis.

[0046] Specifically, a bearing is provided inside the slider, and the oil squeezing roller 31 is rotatably connected to the slider through the cooperation of the shaft and the bearing, and can slide along the slide groove 351 arranged along the radial direction of the secondary smelting cylinder 3 under the drive of the slider, so that when the secondary smelting cylinder 3 is working, the oil squeezing roller 31 is driven by the driving mechanism 33 to move toward the inner wall of the secondary smelting cylinder 3 under the action of centrifugal force, and rolls to squeeze the oil residue.

[0047] Working principle:

[0048] The animal raw material to be smelted is put into a crushing box for pulverization, and the crushed pieces enter the primary smelting box for smelting. The oil smelted in the primary smelting box falls into the filter plate 47 below through the oil filter hole at the bottom of the primary smelting box, and the oil filtered by the filter plate 47 enters the collection box below; the oil residue smelted in the primary smelting box is transported to the secondary smelting cylinder 3 by the screw conveying mechanism 21, and the secondary smelting cylinder 3 is operated to reheat the oil residue. At the same time, the oil squeezing roller 31 is driven by the driving mechanism 33 around the axis of the secondary smelting cylinder 3 and is centrifuged. The force acts on the inner wall of the secondary smelting cylinder 3 to squeeze the oil residue, so that the remaining grease in the oil residue is squeezed out, and at the same time, the heating temperature of the secondary smelting cylinder 3 is increased to further increase the oil yield. Subsequently, the oil refined by the secondary smelting cylinder 3 falls downward onto the filter plate 47 through the oil filter hole at the bottom thereof, and the oil filtered by the filter plate 47 enters the collection box below; in addition, while the oil squeezing roller 31 rotates, the scraper 32 rotates around the inner wall of the secondary smelting cylinder 3 under the drive of the driving mechanism 33 to scrape off the oil residue adhered to the inner wall of the secondary smelting cylinder 3.

[0049] See also Figure 3 As shown, the spring 353 of the sliding mechanism is coaxially arranged with the guide rod 354 in the slide slot 351, and the length of the guide rod 354 is less than the length of the spring 353 in the free state. The guide rod 354 is used to balance the first slider 352 to prevent the first slider 352 from deflecting when the spring 353 is pulled obliquely, thereby increasing the sliding resistance in the slide slot 351 and causing the problem of sliding obstruction.

[0050] See also Figure 1 The rear half of the screw conveying mechanism 21 is provided with a plurality of cross blades 211, which are arranged axially between the spiral blades of the screw conveying mechanism 21. They are used to further crush the oil residue after being smelted in the primary smelting cylinder 2, thereby improving the smelting efficiency and oil yield after entering the secondary smelting cylinder 3.

[0051] See also Figure 4 As shown, the outer circumference of the oil squeezing roller 31 is provided with a plurality of circular protrusions, which are used to increase the contact rate between the oil squeezing roller 31 and oil residues of various shapes and enhance the oil squeezing effect.

[0052] See also Figure 4 As shown, the scraper 32 includes a scraper 32 shaft and scrapers, the scraper 32 shaft is connected to the planetary gear, and the scrapers are arranged in a circumferential array on the scraper 32 shaft and located in the secondary smelting cylinder 3. The scraper 32 rotates while rotating around the secondary smelting cylinder 3, and there are multiple scrapers 32 arranged circumferentially, which increases the number of contacts between the scrapers and the secondary smelting cylinder 3, thereby reducing the oil residue sticking to the inner wall of the secondary smelting cylinder 3, improving the smelting efficiency, and preventing the oil residue from clogging the oil filter hole.

[0053] See also Figure 1 and Figure 5 As shown, Figure 5 This is a partial enlarged view of the moving mechanism.

[0054] In order to improve the filtering efficiency of the filter plate 47, the filter plate 47 is driven to reciprocate up and down by a moving mechanism, and the moving mechanism driving the filter plate 47 to move up and down includes a motor 41, a driving shaft 42, a driving gear 43, a driven gear 44, a connecting rod 45 and a second slider 46; the motor 41 drives and connects the driving shaft 42, the axis of the driving shaft 42 is parallel to the axis of the secondary smelting cylinder 3 and is located below the filter plate 47, the driving gear 43 is connected to the driving shaft 42, the driven gear 44 is meshed with the driving gear 43 and the axis is cross-vertical, one end of the connecting rod 45 is eccentrically hinged to the driven gear 44, and the other end is hinged to the second slider 46, the upper end of the second slider 46 is fixedly connected to the filter plate 47, and the two sides slide up and down with the side walls of the smelting box. Specifically, the driving gear 43 and the driven gear 44 are bevel gears or helical gears.

[0055] In order to improve the stability of the movement of the filter plate 47 , the driving gear 43 , the driven gear 44 , the connecting rod 45 and the second sliding block 46 are provided in two groups and are spaced apart along the length direction of the driving shaft 42 .

[0056] See also Figure 1 The filter plate 47 includes an upper filter plate 47 and a lower filter plate 47 connected up and down, the upper filter plate 47 is located below the primary smelting cylinder 2, and the lower filter plate 47 is located below the secondary smelting cylinder 3 and on one side of the secondary smelting cylinder 3, and both have oil filter holes that pass through from top to bottom, wherein the length of the upper filter plate 47 can cover the length of the oil filter holes of the primary smelting cylinder 2, and the length of the lower filter plate 47 can cover the length of the oil filter holes of the primary smelting cylinder 2 and the secondary smelting cylinder 3.

[0057] In addition, heating elements are provided on the outer side walls of the primary smelting cylinder 2 and the secondary smelting cylinder 3, and the heating temperature is adjustable.

[0058] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the scope of knowledge of those skilled in the art without departing from the concept of the present invention should be included in the protection scope of the present invention.

Claims

1. An animal fat smelting device, comprising a crushing box (1) and a smelting box arranged below the crushing box, wherein a primary smelting cylinder (2) is arranged in the smelting box, a spiral conveying mechanism (21) is arranged in the primary smelting cylinder (2), and an oil filter hole is arranged at the bottom; characterized in that: The smelting box is also provided with a secondary smelting cylinder (3) and an oil filtering mechanism (4). The secondary smelting cylinder (3) is located below the outlet of the primary smelting cylinder (2), parallel to the axis thereof and offset in the rear half thereof, and has an oil filtering hole at the bottom. The oil filtering mechanism (4) includes two layers of filter plates (47) arranged up and down and a moving mechanism for driving the filter plates (47) to move up and down. The secondary smelting cylinder (3) is provided with an oil squeezing roller (31), a scraper (32) and a driving mechanism (33), and the oil squeezing roller (31) and the scraper (32) are driven by the driving mechanism (33) to rotate circumferentially along the inner wall of the secondary smelting cylinder (3); The driving mechanism (33) is a planetary gear mechanism, comprising two sun gears arranged at one end of the secondary smelting cylinder (3), planetary gears (34) meshing with the sun gears, and a planet carrier (35) connecting the sun gears and the planetary gears (34); The planetary frame (35) is a cross structure with four connecting frames, wherein two of the co-linear connecting frames are rotatably connected to the planetary gears (34), the planetary gears (34) are connected to the scraper (32) via shafts, and the other two connecting frames are connected to the oil squeezing rollers (31) via sliding mechanisms; The sliding mechanism comprises a slide groove (351) arranged on the connecting frame and extending radially along the secondary smelting cylinder (3), a first slider (352) slidingly matched with the slide groove (351), one end of the first slider (352) close to the center of the planetary frame (35) is radially connected to the slide groove (351) by a spring (353), and the other end of the first slider (352) is slidingly matched with a guide rod (354) arranged along the extension direction of the slide groove (351), and the center is rotationally connected to the oil squeezing roller (31) through a shaft.

2. The smelting equipment according to claim 1, characterized in that: The spring (353) of the sliding mechanism is coaxially arranged with the guide rod (354) in the sliding groove (351), and the length of the guide rod (354) is smaller than the length of the spring (353) in a free state.

3. The smelting equipment according to claim 2, characterized in that: A plurality of cross blades (211) are provided on the rear half of the screw conveying mechanism (21), and are arranged at intervals along the axial direction between the spiral blades of the screw conveying mechanism (21).

4. The smelting equipment according to claim 3, characterized in that: The outer circumference of the oil squeezing roller (31) is provided with a plurality of circular protrusions.

5. The smelting equipment according to claim 3, characterized in that: The scraper (32) comprises a scraper shaft and scrapers, the scraper shaft is connected to the planetary gear, and the scrapers are arranged in a circumferential array on the scraper shaft and are located in the secondary smelting cylinder (3).

6. The smelting equipment according to any one of claims 1 to 5, characterized in that: The moving mechanism for driving the filter plate (47) to move up and down comprises a motor (41), a driving shaft (42), a driving gear (43), a driven gear (44), a connecting rod (45) and a second sliding block (46); The motor (41) drives and is connected to a driving shaft (42), the axis of the driving shaft (42) is parallel to the axis of the secondary smelting cylinder (3) and is located below the filter plate (47), the driving gear (43) is connected to the driving shaft (42), the driven gear (44) is meshed with the driving gear (43) and the axes are intersecting and perpendicular, one end of the connecting rod (45) is eccentrically hinged to the driven gear (44), and the other end is hinged to the second slider (46), the upper end of the second slider (46) is fixedly connected to the filter plate (47), and the two sides are slidably matched with the side walls of the smelting box.

7. The smelting equipment according to claim 6, characterized in that: The driving gear (43) and the driven gear (44) are bevel gears or helical gears.

8. The smelting equipment according to claim 7, characterized in that: The driving gear (43), the driven gear (44), the connecting rod (45) and the second sliding block (46) are provided in two groups and are arranged at intervals along the length direction of the driving shaft (42).

9. The smelting equipment according to claim 1, characterized in that: The filter plate (47) comprises an upper filter plate (47) and a lower filter plate (47) connected up and down, wherein the upper filter plate (47) is located on one side of the secondary smelting cylinder (3) below the primary smelting cylinder (2), and the lower filter plate (47) is located below the secondary smelting cylinder (3), and both have oil filter holes that pass through from top to bottom, wherein the length of the upper filter plate (47) can cover the length of the oil filter holes of the primary smelting cylinder (2), and the length of the lower filter plate (47) can cover the length of the oil filter holes of the primary smelting cylinder (2) and the secondary smelting cylinder (3).

10. The smelting equipment according to claim 1, characterized in that: Heating elements are provided on the outer side walls of the primary smelting cylinder (2) and the secondary smelting cylinder (3).

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