Molding sand treatment equipment

Abstract

The invention relates to the technical field of molding sand treatment devices, and discloses molding sand treatment equipment. Comprising a rack and further comprises a transmission module, the transmission module is in transmission connection with a sand vibrating frame capable of moving up and down in a reciprocating mode and a rotatable sand filtering shaft, the sand vibrating frame is elastically connected with a sand grinding frame, and the inner wall of the sand grinding frame is rotationally connected with a sand grinding shaft and a reciprocating stroke adjusting part which are used for periodically changing the reciprocating displacement stroke of the sand vibrating frame. The sand filtering cylinder is connected with the machine frame, and a spiral magnetic suction filter disc is installed at the position, corresponding to the inner side of the sand filtering cylinder, of the sand filtering shaft. When the molding sand treatment equipment treats molding sand, on one hand, vibration sand filtering of the molding sand, grinding and refining of the molding sand and striking and refining of the molding sand during jet impact can be achieved through single-motor linkage, and on the other hand, the vibration strength of the vibration mechanism can be periodically adjusted during vibration sand filtering; and the dispersity and the sand filtering effect during molding sand treatment are effectively adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of molding sand processing devices, in particular to molding sand processing equipment. Background Art

[0002] The molding sand is molded, divided into boxes after casting, and the casting is taken out. Then, the sand is processed and used again in the mold. During the sand processing, molding sand processing equipment is required.

[0003] In the prior art, the patent document with publication number CN105939798A discloses a molding sand processing device, which comprises: a hopper, which is divided by a partition wall into a first chamber for receiving the molding sand after taking out the casting and a second chamber for storing the molding sand received in the first chamber; a sand discharge device, which is arranged inside the first chamber, crushes the sand blocks of the molding sand put into the first chamber, and discharges the crushed molding sand and supplies it to the second chamber from an opening provided in the partition wall; an air inlet, which is connected to the second chamber. Then, air is introduced into the second chamber. The above device can realize the cooling of molding sand and the filtering of iron-containing impurities. However, when the above processing equipment processes molding sand, on the one hand, it is not convenient to realize the vibration filtering of molding sand, the crushing and refinement of molding sand, and the beating and refinement of molding sand during jet impact through a single motor linkage. On the other hand, it is not convenient to periodically adjust the vibration intensity of the vibration mechanism during vibration filtering, and then adjust the dispersion and sand filtering effect during molding sand processing. Based on this, the present invention provides a molding sand processing equipment to solve the technical problems raised in the above background technology. Summary of the Invention

[0004] The object of the present invention is to provide a molding sand processing device, which solves the problems of the existing processing equipment mentioned in the background art. On the one hand, it is not convenient to realize the vibration filtering of molding sand, the crushing and refinement of molding sand, and the impact and refinement of molding sand by jet impact through a single motor. On the other hand, it is not convenient to periodically adjust the vibration intensity of the vibration mechanism during vibration filtering, and then adjust the dispersion and sand filtering effect during molding sand processing. In order to solve the above technical problems, the present invention provides the following technical solutions: A molding sand processing device includes a frame and further includes: A transmission module, wherein the transmission module is transmission-connected with a vibrating sand frame that can reciprocate up and down and a rotatable sand filtering shaft, the vibrating sand frame is elastically connected to a sand grinding frame, and the inner wall of the sand grinding frame is rotatably connected to the sand grinding shaft; Reciprocating stroke adjustment component, used to periodically change the reciprocating stroke of the vibrating sand frame; A sand filter drum and a rotatable sand grinding drum, the sand filter drum is connected to the frame, a spiral magnetic filter disc is installed on the sand filter shaft at a position corresponding to the inner side of the sand filter drum, and sand filter holes are regularly distributed on the spiral magnetic filter disc, a grinding roller is installed on the sand grinding shaft at a position corresponding to the inner side of the sand grinding drum, a sand grinding annular gap is provided between the grinding roller and the sand grinding drum, the upper and lower ends of the sand grinding drum are respectively rotatably connected to a sand introduction drum and a sand return drum, and the sand introduction drum and the sand return drum are both connected to the sand filter drum; A sand suction pump, wherein the negative pressure port of the sand suction pump is connected to a sand suction pipe, and the other end of the sand suction pipe is connected to the sand filter cylinder; The jet sand-blasting component is connected to the sand suction pump and jet-blasts the molding sand.

[0005] Preferably, the transmission module includes a double-headed motor installed on the frame and a first hollow shaft rotatably connected to the frame, a first bevel gear is installed on an output shaft end of the double-headed motor and the first hollow shaft, the two first bevel gears are meshed with each other, a first shaft transmission section is fixedly provided on the top of the sand filtering shaft, a first shaft transmission groove is fixedly provided inside the first hollow shaft which is slidably connected to the first shaft transmission section, the sand grinding shaft is driven by the first hollow shaft, and an elastic reset part is installed between the sand vibrating frame and the frame.

[0006] The transmission gear of the present invention is a gear which is connected with the first gear and the gear is connected with the gear to move upwards to drive the transmission gear of the present invention to move upwards to drive the transmission gear of the present invention downwards to drive the transmission gear of the present invention to move upwards to drive the transmission gear of the present invention to move upwards to drive the transmission gear of the present invention to move upwards to drive the

[0007] Preferably, the radius of the half-face gear is 5 to 10 times the radius of the driven gear.

[0008] Preferably, a second shaft transmission groove is provided on the second hollow shaft, and the second shaft transmission groove is slidably connected to the flat shaft. A third hollow shaft is rotatably connected to the vibrating sand frame, and a third shaft transmission groove is fixedly provided inside the third hollow shaft. A second shaft transmission section is provided on the top of the sand grinding shaft, and the second shaft transmission section is slidably connected to the third shaft transmission groove. The first shaft transmission groove, the second shaft transmission groove and the third shaft groove are all open at both ends, and the cross sections of the first shaft transmission groove, the second shaft transmission groove, the third shaft groove, the flat shaft, the first shaft transmission section and the second shaft transmission section are all regular polygons.

[0009] Preferably, the transmission module also includes an inner vertical shaft rotatably connected to the sand-guiding cylinder, and the other output shaft end of the double-headed motor and the top end of the inner vertical shaft are both equipped with a third bevel gear, and the two third bevel gears are meshed with each other. The bottom end of the inner vertical shaft and the sand-grinding rotary cylinder are both equipped with linkage gears, and the two linkage gears are meshed with each other. The sand suction pump is driven by the inner vertical shaft.

[0010] Preferably, the jet sand blasting assembly includes a sand blasting cylinder, the inner wall of the sand blasting cylinder is rotatably connected to a sand throwing disc, the inner wall of the sand throwing disc is rotatably connected to a knife shaft, a group of crushing blades distributed in a circular array are installed on the knife shaft and at a position corresponding to the inner side of the sand blasting cylinder, the air outlet port of the sand suction pump is fixedly connected to a jet nozzle arranged opposite to the sand throwing disc, the sand throwing disc and the knife shaft are both driven by an inner vertical shaft, the bottom of the sand blasting cylinder is connected to a first unloading valve, the first unloading valve is connected to a return sand pipe, the other end of the return sand pipe is connected to the sand suction pipe, and both the return sand pipe and the sand suction pipe are equipped with electric control valves.

[0011] Preferably, an outer vertical shaft is rotatably connected to the frame, and the outer vertical shaft is transmission-connected to the inner vertical shaft through a chain belt. A middle bevel gear is installed at the bottom end of the outer vertical shaft, and side bevel gears are installed at the tail of the cutter shaft and the sand-throwing disc. Both side bevel gears are transmission-connected to the middle bevel gear, and the two side bevel gears are respectively arranged on both sides of the middle bevel gear, and the axis of the cutter shaft is parallel to the horizontal plane.

[0012] Preferably, the sand filter cylinder is connected to a sand inlet box, the bottom end of the sand filter cylinder is connected to a second discharge valve, the top of the sand filter cylinder is fixedly provided with a first axial hole that is slidably adapted to the sand filter shaft, and the interior of the sand induction cylinder is fixedly provided with a second axial hole that is slidably adapted to the sand grinding shaft.

[0013] Preferably, a single chip microcomputer is installed on the end face of the frame, a group of vertically arranged second elastic pressure-resistant parts are installed between the sand grinding frame and the sand vibrating frame, and the spiral magnetic filter is an electromagnet.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When processing molding sand, this molding sand processing equipment can, on the one hand, realize the vibration sand filtering, molding sand crushing and refinement, and molding sand jet impact refinement through the linkage of a single motor; on the other hand, it can periodically adjust the vibration intensity of the vibration mechanism during vibration sand filtering, thereby effectively adjusting the dispersion and sand filtering effect during molding sand processing.

[0015] 2. In the present invention, during the transmission connection period between the half-face gear and the driven gear, the reciprocating screw rotates forward for a set number of turns. During the non-transmission connection period between the half-face gear and the driven gear, the torsion spring is provided so that the reciprocating screw can be reversed and reset. By setting the above-mentioned forward and reverse rotation process of the reciprocating screw, when the double-headed motor is working, the reciprocating screw can reciprocate forward and reverse within a set period. After the reciprocating screw reciprocates forward and reverse within the set period, the reciprocating seat can reciprocate within the set period. After the reciprocating seat reciprocates, the first half-lead gear and the second half-lead gear are rotated. It is cyclically connected to the vibration guide tooth plate, and is cyclically connected to the vibration guide tooth plate through the first half-guide gear and the second half-guide gear, and then the vibration stroke of the vibration sand frame is cyclically changed within a set period. The vibration sand intensity and sand filtering effect of the spiral magnetic filter are changed reciprocally through the reciprocating change of the vibration sand intensity of the spiral magnetic filter, so as to effectively improve the dispersion and particle separation effect of the molding sand on the spiral magnetic filter, and then assist in improving the sand filtering efficiency of the spiral magnetic filter and improve the particle separation effect during molding sand filtration, so as to effectively reduce the omission and misselection rate of molding sand by this processing equipment.

[0016] 3. In the present invention, when processing molding sand, the molding sand sucked by the sand suction pump is ejected at high pressure through the jet nozzle. The molding sand ejected by the jet nozzle is directed to the sand throwing tray. After the molding sand hits the sand throwing tray, the molding sand is refined by impact. The refined sand is thrown out under the centrifugal action of the sand throwing tray. Through the setting of the sand return pipe and the sand throwing tray, the molding sand crushed once can be acted on for the second time by the sand suction pipe, thereby realizing the cyclic crushing of the molding sand, and finally effectively improving the refinement effect of the molding sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a molding sand processing equipment; Figure 2 for Figure 1 Structural diagram from another perspective; Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle; Figure 4 for Figure 2 Schematic diagram of the local enlarged structure at B in the middle; Figure 5 It is a schematic diagram of the cross-sectional structure of the sand filter shaft and the sand feed box; Figure 6 for Figure 5 Schematic diagram of the local enlarged structure at C in the middle; Figure 7 for Figure 5 Schematic diagram of the local enlarged structure at D in the middle; Figure 8 It is a structural diagram of the sand grinding frame and the sand feeding box; Figure 9 It is a schematic diagram of the structure of the first half guide gear, the guide bevel and the second half guide gear.

[0018] Among them: 1. Frame; 2. Vibrating sand frame; 3. Sand filter shaft; 4. Sand grinding frame; 5. Sand grinding shaft; 6. Sand filter cylinder; 7. Sand grinding rotary cylinder; 8. Spiral magnetic filter; 9. Sand filter hole; 10. Grinding roller; 11. Sand guide cylinder; 12. Sand return cylinder; 13. Sand suction pump; 14. Sand suction pipe; 15. Double-headed motor; 16. First hollow shaft; 17. First shaft transmission section; 18. Flat shaft; 19. Reciprocating screw; 20. Half-face gear; 21. Driven gear; 22. Torsion spring; 23. Reciprocating seat; 24. Second hollow shaft; 25. First Semi-guide gear; 26. Second semi-guide gear; 27. Guide bevel; 28. Vibration guide gear plate; 29. ​​First elastic pressure-resistant part; 30. Third hollow shaft; 31. Second shaft transmission section; 32. Inner vertical shaft; 33. Linkage gear; 34. Sand striking cylinder; 35. Sand throwing disc; 36. Knife shaft; 37. Crushing knife edge; 38. Jet nozzle; 39. First discharge valve; 40. Return sand pipe; 41. Outer vertical shaft; 42. Sand feeding box; 43. Second discharge valve; 44. Single chip microcomputer; 45. Second elastic pressure-resistant part; 46. Elastic reset part. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-9 A molding sand processing device includes a frame 1, a single chip microcomputer 44 is installed on the end surface of the frame 1, and further includes: The transmission module is connected to a vibrating sand frame 2 that can reciprocate up and down and a rotatable sand filtering shaft 3, and the vibrating sand frame 2 is elastically connected to a sand grinding frame 4; A set of vertically arranged second elastic pressure-resistant members 45 is installed between the sand grinding frame 4 and the sand vibrating frame 2; The inner wall of the sand grinding frame 4 is rotatably connected to the sand grinding shaft 5; A reciprocating stroke adjustment component, used to periodically change the reciprocating stroke of the vibrating sand frame 2; The transmission module includes a double-headed motor 15 mounted on the frame 1 and a first hollow shaft 16 rotatably connected to the frame 1. First bevel gears are mounted on one output shaft end of the double-headed motor 15 and the first hollow shaft 16, and the two first bevel gears are meshed with each other. A first shaft transmission section 17 is fixedly provided on the top of the sand filtering shaft 3, and a first shaft transmission groove is fixedly provided inside the first hollow shaft 16 and is slidably connected to the first shaft transmission section 17. The sand grinding shaft 5 is driven by the first hollow shaft 16, and an elastic reset member 46 is installed between the sand vibrating frame 2 and the frame 1; The vibrating sand frame 2 is rotatably connected to a third hollow shaft 30, a third shaft transmission groove is fixedly opened inside the third hollow shaft 30, and a second shaft transmission section 31 is provided on the top of the sand grinding shaft 5, and the second shaft transmission section 31 is slidably connected to the third shaft transmission groove; A sand filter drum 6 and a rotatable sand grinding drum 7, wherein the sand filter drum 6 is connected to the frame 1; A spiral magnetic filter disc 8 is installed on the sand filter shaft 3 and at a position corresponding to the inner side of the sand filter cylinder 6. Sand filter holes 9 are regularly distributed on the spiral magnetic filter disc 8. The spiral magnetic filter 8 is an electromagnet; The electromagnet material of the spiral magnetic filter 8 is set so that the spiral magnetic filter 8 generates magnetism when the power is on and loses magnetism when the power is off; When the spiral magnetic filter 8 filters the molding sand, the spiral magnetic filter 8 is energized and generates magnetism. After the spiral magnetic filter 8 generates magnetism, the scrap iron in the molding sand is electromagnetically adsorbed and filtered out. When the spiral magnetic filter 8 is filtering the molding sand, the conveying direction of the spiral magnetic filter 8 is upward; When the molding sand is completely processed and discharged from the equipment, the spiral magnetic filter 8 is powered off and loses its magnetism, so that the filtered scrap iron is discharged; When the spiral magnetic filter 8 discharges the scrap iron, the conveying direction of the spiral magnetic filter 8 is downward; A grinding roller 10 is installed on the sand grinding shaft 5 and corresponds to the position inside the sand grinding drum 7. A sand grinding annular gap is provided between the grinding roller 10 and the sand grinding drum 7. The upper and lower ends of the sand grinding drum 7 are respectively connected to a sand introduction drum 11 and a sand return drum 12, which are both connected to the sand filter drum 6. The reciprocating stroke adjustment component includes a flat shaft 18 and a reciprocating screw 19 rotatably connected to the frame 1. The flat shaft 18 is equipped with a second bevel gear, which is in transmission connection with the first bevel gear on the first hollow shaft 16. A half-face gear 20 is mounted on the flat shaft 18, and a driven gear 21 is fixedly mounted on the reciprocating screw 19. The half-face gear 20 is adapted to be connected to the driven gear 21, and a torsion spring 22 is fixedly provided at the rotation connection between the reciprocating screw 19 and the frame 1; The reciprocating screw rod 19 is connected to a reciprocating seat 23 in a transmission manner. The reciprocating seat 23 is slidably connected to the frame 1. The reciprocating seat 23 is rotatably connected to a second hollow shaft 24. The second hollow shaft 24 is linked to the flat shaft 18. A second shaft transmission groove is formed on the second hollow shaft 24, and the second shaft transmission groove is slidably connected to the flat shaft 18. The first shaft transmission groove, the second shaft transmission groove, and the third shaft transmission groove are all open at both ends. The cross-sections of the first shaft transmission groove, the second shaft transmission groove, the third shaft transmission groove, the flat shaft 18, the first shaft transmission section 17, and the second shaft transmission section 31 are all regular polygons. A first half guide gear 25 and a second half guide gear 26 are mounted on the second hollow shaft 24 , respectively. A guide inclined surface 27 is provided on the second hollow shaft 24 at a position corresponding to the position between the first half guide gear 25 and the second half guide gear 26 . A vibration guide tooth plate 28 is provided above the vibration frame 2, and a group of first elastic pressure-resistant parts 29 are installed between the vibration guide tooth plate 28 and the vibration frame 2; The radius of the half-face gear 20 is 8 times the radius of the driven gear 21; During the transmission connection period between the half-face gear 20 and the driven gear 21, the reciprocating screw 19 rotates forward for a set number of turns. During the non-transmission connection period between the half-face gear 20 and the driven gear 21, the torsion spring 22 is provided to enable the reciprocating screw 19 to reverse and reset. By setting the above-mentioned forward and reverse rotation process of the reciprocating screw 19, when the double-headed motor 15 is working, the reciprocating screw 19 can reciprocate forward and reverse within a set period; After the reciprocating screw 19 reciprocates in forward and reverse directions within a set period, the reciprocating seat 23 can reciprocate within a set period. After the reciprocating seat 23 reciprocates, the first half guide gear 25 and the second half guide gear 26 are cyclically connected to the vibration guide gear plate 28; The first and second half-guide gears 25 and 26 are cyclically connected to the vibration guide tooth plate 28, and the vibration stroke of the sand vibrating frame 2 is cyclically changed within a set period. The reciprocating change of the vibration stroke of the sand vibrating frame 2 reciprocates the vibration intensity and sand filtering effect of the spiral magnetic filter 8. The reciprocating change of the vibration intensity of the spiral magnetic filter 8 effectively improves the dispersion and particle separation of the molding sand on the spiral magnetic filter 8, thereby helping to improve the sand filtering efficiency of the spiral magnetic filter 8 and the particle separation effect during molding sand filtration, thereby effectively reducing the omission and misselection rate of molding sand by the processing equipment; A sand suction pump 13, a negative pressure port of the sand suction pump 13 is connected to a sand suction pipe 14, and the other end of the sand suction pipe 14 is connected to the sand filter cylinder 6; The transmission module also includes an inner vertical shaft 32 rotatably connected to the sand guide cylinder 11. A third bevel gear is installed at the other output shaft end of the double-headed motor 15 and the top of the inner vertical shaft 32. The two third bevel gears mesh with each other. A linkage gear 33 is installed at the bottom end of the inner vertical shaft 32 and the sand grinding drum 7. The two linkage gears 33 mesh with each other. The sand suction pump 13 is driven by the inner vertical shaft 32. The jet sand blasting assembly is connected to the sand suction pump 13 and jets and crushes the molding sand.

[0021] The jet sand blasting assembly includes a sand blasting cylinder 34, the inner wall of the sand blasting cylinder 34 is rotatably connected to a sand throwing disc 35, the inner wall of the sand throwing disc 35 is rotatably connected to a cutter shaft 36, and a group of crushing blades 37 distributed in a circumferential array are installed on the cutter shaft 36 and at positions corresponding to the inner side of the sand blasting cylinder 34. The air outlet port of the sand suction pump 13 is fixedly connected to a jet nozzle 38 arranged directly opposite the sand throwing disc 35. The sand throwing disc 35 and the cutter shaft 36 are both driven by the inner vertical shaft 32; An outer vertical shaft 41 is rotatably connected to the frame 1, and the outer vertical shaft 41 is transmission-connected to the inner vertical shaft 32 through a chain belt. A middle bevel gear is installed at the bottom end of the outer vertical shaft 41, and side bevel gears are installed at the tail of the cutter shaft 36 and the sand throwing disc 35. Both side bevel gears are transmission-connected to the middle bevel gear. The two side bevel gears are respectively arranged on both sides of the middle bevel gear, and the axis of the cutter shaft 36 is parallel to the horizontal plane. By setting the positions of the two side cone teeth and the middle cone teeth, the rotation directions of the cutter shaft 36 and the sand throwing disc 35 are opposite; During the molding sand processing, the molding sand sucked by the sand suction pump 13 is ejected at high pressure through the jet nozzle 38. The molding sand ejected by the jet nozzle 38 is directed to the sand throwing plate 35. After the molding sand hits the sand throwing plate 35, the molding sand is refined by impact. The refined sand is thrown out under the centrifugal action of the sand throwing plate 35. The bottom of the sand-beating cylinder 34 is connected to a first discharge valve 39 , which is connected to a sand return pipe 40 . The other end of the sand return pipe 40 is connected to the sand suction pipe 14 . Both the sand return pipe 40 and the sand suction pipe 14 are equipped with electric control valves.

[0022] By setting the sand return pipe 40 and the sand throwing plate 35, the molding sand crushed once can be acted on a second time by the sand suction pipe 14, thereby realizing the cyclic crushing of the molding sand, and finally effectively improving the refinement effect of the molding sand; The sand filter cylinder 6 is connected to a sand inlet box 42, and the bottom end of the sand filter cylinder 6 is connected to a second discharge valve 43. The top of the sand filter cylinder 6 is fixedly provided with a first axial hole that is slidably adapted to the sand filter shaft 3, and the aperture of the first axial hole is 1.1 times the diameter of the sand filter shaft 3. The interior of the sand inducing cylinder 11 is fixedly provided with a second axial hole that is slidably adapted to the sand grinding shaft 5, and the aperture of the second axial hole is 1.1 times the radius of the sand grinding shaft 5.

[0023] The working principle of the present invention is: when filtering molding sand, the double-headed motor 15 outputs the speed at the set power. When the spiral magnetic filter 8 filters the molding sand, the spiral magnetic filter 8 is energized and generates magnetism. After the spiral magnetic filter 8 generates magnetism, the scrap iron in the molding sand is electromagnetically adsorbed and filtered out. When the spiral magnetic filter 8 filters the molding sand, the conveying direction of the spiral magnetic filter 8 is upward, and the molding sand to be filtered enters the sand filtering area of ​​the spiral magnetic filter 8 through the sand inlet box 42. The sand filtered out by the spiral magnetic filter 8 enters the sand grinding ring gap for crushing and refining. The refined sand enters the jet sand impact assembly for cyclic impact crushing. The crushed sand can finally be discharged through the first discharge valve 39.

[0024] Preferably, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A molding sand processing device, comprising a frame (1), characterized in that: Also includes: A transmission module, wherein the transmission module is transmission-connected with a sand vibrating frame (2) that can reciprocate up and down and a rotatable sand filtering shaft (3), the sand vibrating frame (2) is elastically connected with a sand grinding frame (4), and the inner wall of the sand grinding frame (4) is rotatably connected with a sand grinding shaft (5); A reciprocating stroke adjustment component, used for periodically changing the reciprocating displacement stroke of the vibrating sand frame (2); A sand filter cylinder (6) and a rotatable sand grinding drum (7), wherein the sand filter cylinder (6) is connected to the frame (1), a spiral magnetic filter plate (8) is installed on the sand filter shaft (3) at a position corresponding to the inner side of the sand filter cylinder (6), and sand filter holes (9) are regularly distributed on the spiral magnetic filter plate (8), a grinding roller (10) is installed on the sand grinding shaft (5) at a position corresponding to the inner side of the sand grinding drum (7), a sand grinding annular gap is provided between the grinding roller (10) and the sand grinding drum (7), and the upper and lower ends of the sand grinding drum (7) are rotatably connected to a sand guide cylinder (11) and a sand return cylinder (12), and the sand guide cylinder (11) and the sand return cylinder (12) are both connected to the sand filter cylinder (6); A sand suction pump (13), wherein the negative pressure port of the sand suction pump (13) is connected to a sand suction pipe (14), and the other end of the sand suction pipe (14) is connected to a sand filter cylinder (6); The jet sand impact component is connected to the sand suction pump (13) and is used to jet and impact the molding sand.

2. A molding sand processing equipment according to claim 1, characterized in that: The transmission module comprises a double-headed motor (15) mounted on a frame (1) and a first hollow shaft (16) rotatably connected to the frame (1); a first bevel gear is mounted on an output shaft end of the double-headed motor (15) and the first hollow shaft (16); the two first bevel gears are meshed with each other; a first shaft transmission section (17) is fixedly arranged on the top of the sand filtering shaft (3); a first shaft transmission groove slidably connected to the first shaft transmission section (17) is fixedly arranged inside the first hollow shaft (16); the sand grinding shaft (5) is driven by the first hollow shaft (16); and an elastic reset member (46) is installed between the sand vibrating frame (2) and the frame (1).

3. A molding sand processing equipment according to claim 2, characterized in that: The reciprocating stroke adjustment component comprises a flat shaft (18) and a reciprocating screw (19) rotatably connected to the frame (1); a second bevel gear is mounted on the flat shaft (18); the second bevel gear is transmission-connected to the first bevel gear on the first hollow shaft (16); a half-face gear (20) is mounted on the flat shaft (18); a driven gear (21) is fixedly mounted on the reciprocating screw (19); the half-face gear (20) is adaptively connected to the driven gear (21); a torsion spring (22) is fixedly arranged at a rotational connection between the reciprocating screw (19) and the frame (1); a reciprocating seat (23) is transmission-connected to the reciprocating screw (19); The reciprocating seat (23) is slidably connected to the frame (1); a second hollow shaft (24) is rotatably connected to the reciprocating seat (23); the second hollow shaft (24) is linked to the flat shaft (18); a first half guide gear (25) and a second half guide gear (26) are respectively mounted on the second hollow shaft (24); a guide inclined surface (27) is provided on the second hollow shaft (24) at a position corresponding to the position between the first half guide gear (25) and the second half guide gear (26); a vibration guide tooth plate (28) is provided above the vibration frame (2); and a group of first elastic pressure-resistant parts (29) are installed between the vibration guide tooth plate (28) and the vibration frame (2).

4. A molding sand processing device according to claim 3, characterized in that: The radius of the half-face gear (20) is 5 to 10 times the radius of the driven gear (21).

5. The molding sand processing equipment according to claim 4, characterized in that: The second hollow shaft (24) is provided with a second shaft transmission groove, and the second shaft transmission groove is slidably connected to the flat shaft (18). The vibrating sand frame (2) is rotatably connected to a third hollow shaft (30), and a third shaft transmission groove is fixedly provided inside the third hollow shaft (30). The top of the sand grinding shaft (5) is provided with a second shaft transmission section (31), and the second shaft transmission section (31) is slidably connected to the third shaft transmission groove. The first shaft transmission groove, the second shaft transmission groove and the third shaft transmission groove are all open at both ends, and the cross-sections of the first shaft transmission groove, the second shaft transmission groove, the third shaft groove, the flat shaft (18), the first shaft transmission section (17) and the second shaft transmission section (31) are all regular polygons.

6. A molding sand processing device according to claim 5, characterized in that: The transmission module also includes an inner vertical shaft (32) rotatably connected to the sand guiding cylinder (11); a third bevel gear is installed at the other output shaft end of the double-headed motor (15) and the top end of the inner vertical shaft (32); the two third bevel gears are meshed with each other; a linkage gear (33) is installed at the bottom end of the inner vertical shaft (32) and the sand grinding rotary cylinder (7); the two linkage gears (33) are meshed with each other; and the sand suction pump (13) is driven by the inner vertical shaft (32).

7. A molding sand processing device according to claim 6, characterized in that: The jet sand striking assembly comprises a sand striking cylinder (34), the inner wall of the sand striking cylinder (34) is rotatably connected to a sand throwing disc (35), the inner wall of the sand throwing disc (35) is rotatably connected to a knife shaft (36), a group of crushing knife edges (37) distributed in a circumferential array are installed on the knife shaft (36) and at a position corresponding to the inner side of the sand striking cylinder (34), the air outlet port of the sand suction pump (13) is fixedly connected to a jet nozzle (38) arranged opposite to the sand throwing disc (35), the sand throwing disc (35) and the knife shaft (36) are both driven by an inner vertical shaft (32), the bottom of the sand striking cylinder (34) is connected to a first discharge valve (39), the first discharge valve (39) is connected to a sand return pipe (40), the other end of the sand return pipe (40) is connected to a sand suction pipe (14), and both the sand return pipe (40) and the sand suction pipe (14) are installed with an electric control valve.

8. The molding sand processing equipment according to claim 7, characterized in that: An outer vertical shaft (41) is rotatably connected to the frame (1), the outer vertical shaft (41) is transmission-connected to the inner vertical shaft (32) via a chain belt, a middle cone gear is mounted on the bottom end of the outer vertical shaft (41), side cone gears are mounted on the tail of the cutter shaft (36) and the sand throwing plate (35), two side cone gears are transmission-connected to the middle cone gear, the two side cone gears are respectively arranged on both sides of the middle cone gear, and the axis of the cutter shaft (36) is parallel to the horizontal plane.

9. The molding sand processing equipment according to claim 1, characterized in that: The sand filter cylinder (6) is connected to a sand inlet box (42), the bottom end of the sand filter cylinder (6) is connected to a second discharge valve (43), the top of the sand filter cylinder (6) is fixedly provided with a first axial hole slidably matched with the sand filter shaft (3), and the interior of the sand guide cylinder (11) is fixedly provided with a second axial hole slidably matched with the sand grinding shaft (5).

10. The molding sand processing equipment according to claim 1, characterized in that: A single chip computer (44) is installed on the end surface of the frame (1), a group of second elastic pressure-resistant parts (45) arranged vertically are installed between the sand grinding frame (4) and the sand vibrating frame (2), and the spiral magnetic filter (8) is an electromagnet.

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