Sand treatment device for nodular cast iron casting

Abstract

The invention discloses a spheroidal graphite cast iron casting sand treatment device, and relates to the technical field of sand treatment.The spheroidal graphite cast iron casting sand treatment device comprises a treatment box, the upper surface of the treatment box fixedly communicates with a discharging pipe, the inner wall of the discharging pipe is fixedly and rotatably connected with a first rotating shaft and a second rotating shaft which are symmetrically arranged, and the surfaces of the first rotating shaft and the second rotating shaft are both fixedly connected with material guide plates; the upper surface of the discharging pipe fixedly communicates with a discharging hopper, the inner wall of the treatment box is fixedly connected with a limiting rod, the surface of the limiting rod is slidably connected with a screen frame, and the inner wall of the screen frame is fixedly connected with a screen. According to the sand screening device, sand falling on the screen to be screened can be continuously dispersed, the sand can be promoted to make full contact with screen holes, penetration of fine impurities is accelerated, the problem that the screen holes are blocked due to local accumulation of sand on the screen is solved, and the sand screening treatment speed of the device is greatly increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand treatment, in particular to a sand treatment device for nodular cast iron casting. BACKGROUND

[0002] There are many underground pipelines in urban construction, and every section of the pipeline needs an outlet to the ground. In order to protect the outlet, a manhole cover is installed at the outlet to ensure normal driving of the road. In the casting process of the manhole cover, molten metal is poured into a well-shaped sand box to ensure the one-piece forming effect of the manhole cover. The sand in the sand box can be used repeatedly, but impurities may remain in the sand, which will affect the subsequent casting of the manhole cover if not pre-processed.

[0003] For example: The sand treatment device for nodular cast iron casting disclosed in Chinese patent CN202421324257.8 includes a treatment box, a discharge box fixedly connected to the bottom end of the inner wall of the treatment box, an L-shaped conveying pipe fixedly connected to the outer side of the treatment box, a conveying auger rotatably connected to the inside of the L-shaped conveying pipe, the L-shaped conveying pipe being fixedly connected to the discharge box, and a push plate slidably connected to the inside of the discharge box. The device uses a discharge plate to re-convey the sand to the treatment box for secondary screening, thereby accelerating the secondary feeding efficiency of the sand. The sand treatment device for nodular cast iron manhole cover casting disclosed in Chinese patent CN202321744666.9 includes a machine body, a support plate fixedly connected to the top end of the machine body, a feeding hopper fixedly connected to the side wall of the support plate, a fixed plate fixedly connected to the left inner wall of the machine body, a motor fixedly connected to the top end of the fixed plate, and a cam fixedly connected to the output shaft of the motor extending below the fixed plate. The device can timely process the sand after casting to prevent the sand from caking or being contaminated with impurities. As in the above-mentioned reference documents, the sand treatment device for nodular cast iron casting in the prior art usually sets a single or multiple non-moving screen to screen the casting sand. Since the screen cannot move when screening the sand, part of the casting sand may accumulate on the screen, reducing the screening efficiency of the screen. In addition, the sand treatment device for nodular cast iron casting in the prior art often continuously and uninterruptedly discharges the casting sand to be processed. This discharging method increases the load of the screen and easily causes the screen to be blocked, which is not conducive to use. Therefore, there is an urgent need for a sand treatment device for nodular cast iron casting to solve the above problems. SUMMARY

[0004] The present application aims to provide a sand treatment device for nodular cast iron casting to solve the problems in the background art.

[0005] To achieve the above object, the present application provides the following technical scheme: A nodular cast iron casting sand treatment device, comprising a treatment box, a lower pipe is fixedly connected to the upper surface of the treatment box, two symmetrical rotating shafts are rotatably connected to the inner wall of the lower pipe, guide plates are fixedly connected to the surfaces of the rotating shafts, and a lower hopper is fixedly connected to the upper surface of the lower pipe. A limiting rod is fixedly connected to the inner wall of the treatment box, a screen frame is slidably connected to the surface of the limiting rod, and a screen is fixedly connected to the inner wall of the screen frame; a moving component is arranged in the treatment box and used to drive the screen frame to reciprocatingly move along the limiting rod for auxiliary sand soil screening. The treatment box is further provided with a discharging component in transmission connection with the moving component, and the discharging component is used to drive the two guide plates to reciprocatingly deflect for intermittent discharging.

[0006] Preferably, a support column is fixedly connected to the surface of the treatment box, a collecting box and a waste box are arranged below the treatment box, a waste port is formed in the surface of the treatment box, doors are arranged on the surfaces of the collecting box and the waste box, and a control panel is arranged on the surface of the treatment box.

[0007] Preferably, the moving component comprises a motor one mounted on the surface of the treatment box, an output shaft of the motor one is fixedly connected with a rotating shaft three, a rotating disc is fixedly connected to the surface of the rotating shaft three, and a moving column is fixedly connected to the surface of the rotating disc. A connecting plate one is fixedly connected to the surface of the rotating shaft one, a counterweight is fixedly connected to the end of the connecting plate one away from the rotating shaft one, an arc-shaped frame is fixedly connected to the surface of the counterweight, and an arc-shaped notch is formed in the surface of the arc-shaped frame and adapted for the sliding of the moving column.

[0008] Preferably, a connecting plate two is fixedly connected to the surface of the counterweight, a hinged plate is hinged to the end of the connecting plate two, the end of the hinged plate is hinged to the side surface of the screen frame, and a spring is arranged between the screen frame and the inner wall of the treatment box.

[0009] Preferably, a rotating shaft four is fixedly connected to the surface of the treatment box, a disc is fixedly connected to the surface of the rotating shaft four, an abutting plate is fixedly connected to the surface of the disc, a plurality of circumferentially arranged triangular teeth are fixedly connected to the surface of the rotating disc, and a knocking rod is fixedly connected to the surface of the disc.

[0010] Preferably, a circular shell is arranged on the surface of the treatment box, and a coil spring is arranged at the end of the rotating shaft four extending into the circular shell.

[0011] Preferably, the blanking component includes a rotating shaft five fixedly connected to the inner wall of the blanking pipe, the surface of the rotating shaft five is fixedly connected with a gear one, the surface of the rotating shaft two is fixedly connected with a gear two engaged with the gear one, the rotating shaft one and the rotating shaft five are jointly provided with a belt pulley transmission mechanism one, and the inner wall of the blanking pipe is fixedly installed with an L-shaped baffle.

[0012] Preferably, the surface of the blanking pipe is fixedly installed with a driving box, the inner wall of the driving box is fixedly connected with a rotating rod one and two symmetrically arranged rotating rod twos, the surface of the blanking pipe is fixedly connected with a mounting plate, the mounting plate is provided with a motor two, the output shaft of the motor two is fixedly connected with a rotating rod three, the surface of the rotating rod three is fixedly connected with a gear three, the surface of the rotating rod one is fixedly connected with a gear four engaged with the gear three, the rotating rod one and the two rotating rod twos are jointly provided with a belt pulley transmission mechanism two, and one end of the rotating rod three and the two rotating rod twos extending into the blanking pipe is fixedly installed with a crushing roller.

[0013] Compared with the prior art, the present application has the following advantages: Firstly, the present application can drive the screen frame and the screen to reciprocate on the limiting rod under the linkage of multiple structures when the motor one is turned on, so that the sand falling on the screen can be continuously dispersed to avoid the problem of screen hole blockage caused by local accumulation. Meanwhile, the screen frame is reciprocally knocked by the knocking rod to cause the screen to reciprocate, which can further promote the sand to fully contact with the screen hole and accelerate the penetration of small impurities. The reciprocating movement and small amplitude vibration of the screen can greatly improve the screening speed and completeness of the sand on the screen, and the screened sand particles can fall from the screen hole on the surface of the screen into the collecting box, while the large particle impurities can slide into the waste box under the action of gravity.

[0014] Secondly, the present application can complete the periodic intermittent feeding in the blanking pipe through the intermittent reciprocating deflection of the two guide plates under the linkage of multiple structures after the motor one is turned on. Compared with the traditional continuous and uninterrupted feeding mode, the present application can avoid the excessive accumulation of sand on the screen, reduce the instantaneous load of the screen, and reduce the risk of screen hole blockage. Meanwhile, the intermittent feeding in the blanking pipe can provide sufficient working time for the crushing work of the three crushing rollers, so that the three crushing rollers can crush the sand blocks poured into the blanking hopper before the sand screening operation, ensuring that the sand particles entering the screen for screening treatment are more uniform, thereby further improving the working efficiency of the nodular cast iron casting sand treatment device and being worth popularizing and using. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The structure of the present application is shown in the axis measurement Figure 1 ; Figure 2 Axial view of the structure of the present application Figure 2 ; Figure 3 Sectional view of the structure of the present application; Figure 4 Schematic diagram of the internal structure of the drive box in the present application; Figure 5 Schematic diagram of the structure of the material guide plate in the present application; Figure 6 Sectional view of the structure of the processing box in the present application; Figure 7 Schematic diagram of the structure of the connecting plate in the present application; Figure 8 Sectional view of the structure of the rotating disc in the present application; Figure 9 Schematic diagram of the structure of the rotating disc in the present application; Figure 10 Sectional view of the structure of the disc in the present application; Figure 11 Sectional view of the structure of the circular shell in the present application.

[0016] In the figure: 1, processing box; 2, support column; 3, collection box; 4, waste box; 5, door body; 6, feeding pipe; 7, feeding hopper; 8, drive box; 11, control panel; 12, motor one; 13, circular shell; 14, screen; 15, waste port; 16, rotating rod three; 17, rotating rod two; 18, crushing roller; 19, L-shaped baffle; 20, connecting plate one; 21, rotating disc; 22, rotating shaft three; 23, disc; 24, rotating shaft four; 25, limiting rod; 26, screen frame; 27, material guide plate; 28, pulley transmission mechanism two; 29, motor two; 30, rotating rod one; 31, gear four; 32, gear three; 33, gear two; 34, rotating shaft two; 35, rotating shaft five; 36, gear one; 37, pulley transmission mechanism one; 38, rotating shaft one; 39, moving column; 40, arc-shaped frame; 41, counterweight; 42, connecting plate two; 43, hinged plate; 44, knocking rod; 45, triangular tooth; 47, spring; 48, abutting plate; 49, coil spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Embodiment one, please refer to Figures 1-11The application provides a technical scheme: a nodular cast iron casting sand treatment device, which comprises a treatment box 1, the upper surface of the treatment box 1 is fixedly connected with a feeding pipe 6 in communication, the inner wall of the feeding pipe 6 is fixedly connected with two symmetrically arranged rotating shafts one 38 and two 34 in rotation, the surfaces of the rotating shafts one 38 and two 34 are both fixedly connected with guide plates 27, the upper surface of the feeding pipe 6 is fixedly connected with a feeding hopper 7 in communication, The inner wall of the treatment box 1 is fixedly connected with a limiting rod 25, the surface of the limiting rod 25 is slidably connected with a screen frame 26, the inner wall of the screen frame 26 is fixedly connected with a screen 14, and a moving part for driving the screen frame 26 to reciprocatingly move along the limiting rod 25 to assist in screening sand soil is arranged in the treatment box 1. The treatment box 1 is also provided with a feeding part in transmission connection with the moving part.

[0019] The surface of the treatment box 1 is fixedly connected with a supporting column 2, the lower portion of the treatment box 1 is provided with a collecting box 3 and a waste box 4, the surface of the treatment box 1 is provided with a waste port 15, the surfaces of the collecting box 3 and the waste box 4 are both provided with door bodies 5, and the surface of the treatment box 1 is provided with a control panel 11.

[0020] The moving part comprises a motor one 12 installed on the surface of the treatment box 1, the output shaft of the motor one 12 is fixedly connected with a rotating shaft three 22, the surface of the rotating shaft three 22 is fixedly connected with a rotating disc 21, and the surface of the rotating disc 21 is fixedly connected with a moving column 39. The surface of the rotating shaft one 38 is fixedly connected with a connecting plate one 20, the end portion, away from the rotating shaft one 38, of the connecting plate one 20 is fixedly connected with a counterweight 41, the surface of the counterweight 41 is fixedly connected with an arc-shaped frame 40, and the surface of the arc-shaped frame 40 is provided with an arc-shaped notch suitable for the sliding of the moving column 39.

[0021] The surface of the counterweight 41 is fixedly connected with a connecting plate two 42, the end portion of the connecting plate two 42 is hingedly connected with a hinge plate 43, the end portion of the hinge plate 43 is hingedly connected with the side surface of the screen frame 26, and the spring 47 is arranged between the screen frame 26 and the inner wall of the treatment box 1.

[0022] The surface of the treatment box 1 is fixedly connected with a rotating shaft four 24, the surface of the rotating shaft four 24 is fixedly connected with a disc 23, the surface of the disc 23 is fixedly connected with an abutting plate 48, the surface of the rotating disc 21 is fixedly connected with a plurality of circumferentially arranged triangular teeth 45, and the surface of the disc 23 is fixedly connected with a knocking rod 44.

[0023] The surface of the treatment box 1 is provided with a circular shell 13, and one end of the rotating shaft four 24, which extends into the circular shell 13, is provided with a coil spring 49.

[0024] More specifically, in the embodiment, The used sand soil is poured into the feeding pipe 6 through the feeding hopper 7,Figure 3 and Figure 6 As shown in the figure, the sand in the feeding pipe 6 will fall into the processing box 1 and be screened by the screen 14 in the processing box 1. At the same time, the motor 12 is started to drive the rotating shaft 22 and the rotating disc 21 to rotate, as shown in the figure. Figure 6 and Figure 7 As the rotating disc 21 rotates, the moving column 39 will move in a circular motion with the axis of the rotating disc 21 as the center. With the circular motion of the moving column 39, the moving column 39 will first slide in the arc-shaped slot in the arc-shaped frame 40. When the moving column 39 moves to the end of the arc-shaped slot, it will push the arc-shaped frame 40 to move. Since the counterweight 41 is fixedly connected with the arc-shaped frame 40, and the connecting plate 20 fixedly connected with the surface of the counterweight 41 is fixedly connected with the rotating shaft 38, as the moving column 39 pushes the arc-shaped frame 40 to move, the arc-shaped frame 40, the counterweight 41 and the connecting plate 20 will deflect with the rotating shaft 38 as the center, with the axis of the rotating disc 21 as the symmetric axis, until the moving column 39 moves to the position symmetric to the initial position. Under the action of the weight of the counterweight 41, the frame 40 will reset, and the connecting plate 20 will also reverse and reset. When the moving column 39 slides along the arc-shaped slot in the arc-shaped frame 40 to the end of the arc-shaped slot again, the above operation will be repeated. That is, when the motor 12 is started, the connecting plate 20 and the counterweight 41 will reciprocate with the rotating shaft 38 as the axis. With the reciprocating deflection of the counterweight 41, the connecting plate 42 will also reciprocate synchronously. Since the screen frame 26 is limited by the limiting rod 25, with the reciprocating deflection of the connecting plate 42, the screen frame 26 will drive the screen 14 to reciprocate on the limiting rod 25 under the hinging action of the hinged plate 43. In this way, the screen 14 can be driven to move reciprocally during sand screening, which avoids the accumulation of part of the sand on the surface of the screen 14 and improves the screening efficiency of the screen 14.

[0025] It is worth noting that, as shown in the figure, the slot on the surface of the screen frame 26 for the limiting rod 25 to extend into is slightly larger than the size of the limiting rod 25. Therefore, the screen frame 26 can also vibrate slightly while reciprocating on the surface of the limiting rod 25. Figure 2 As shown in the figure, and Figure 6 and Figure 9 and Figure 11As shown, the knocking rod 44 at this time is in abutment with the screen frame 26. After the motor 12 is turned on, the rotation of the rotating disc 21 will make the multiple triangular teeth 45 on the side thereof rotate synchronously. When one triangular tooth 45 is in abutment with the abutment plate 48, the rotation of the triangular tooth 45 will push the abutment plate 48 to deflect around the rotation shaft four 24. The deflection of the abutment plate 48 will drive the knocking rod 44 on the surface of the disc 23 to deflect upwards away from the screen frame 26. At the same time, the coil spring 49 in the circular shell 13 will start to store energy. When the triangular tooth 45 is disengaged from the abutment plate 48, the elastic potential energy of the coil spring 49 will drive the disc 23, the abutment plate 48 and the knocking rod 44 to reverse and reset, so that the knocking rod 44 knocks the screen frame 26 below once, and the screen 14 is vibrated. At this time, the abutment plate 48 will be in contact with the next triangular tooth again, and the above operation will be repeated with the continuous rotation of the rotating disc 21.

[0026] In summary, the traditional static screen is prone to be blocked by sand and gravel accumulation, especially when continuously feeding under high load, the screening efficiency will decrease sharply. In the device, after the motor 12 is turned on, the reciprocating movement and vibration of the screen 14 work together: The horizontal reciprocating movement of the screen 14 can disperse the sand and gravel on the screen 14 continuously, avoiding local accumulation; The reciprocating vibration of the screen 14 caused by the reciprocating knocking of the knocking rod 44 can further promote the sand and gravel to fully contact with the screen holes and accelerate the penetration of small impurities; The reciprocating movement and small amplitude vibration of the screen 14, the double dynamic state of the screen 14 during sand and gravel screening, greatly improves the screening speed and thoroughness of the sand and gravel on the screen 14; As Figure 6 shown, the screened sand and gravel particles will fall from the screen holes on the surface of the screen 14 to the inside of the collection box 3 for subsequent use, and the large particle impurities will slide along the screen 14 under the action of gravity and fall into the waste box 4, so as to complete the sand and gravel screening treatment work; In addition, the reciprocating movement and small amplitude vibration of the screen 14 are realized by the single driving source of the motor 12 through mechanical linkage, which greatly simplifies the structural complexity, reduces the equipment cost and energy consumption, and reduces the maintenance nodes. The composite function is realized by a more simplified transmission system, which improves the reliability and economy of the equipment while ensuring the screening quality. It provides a more efficient and low-consumption processing scheme for the recycling of foundry sand, which is worth popularizing and using.

[0027] In the above embodiment, on the basis of the above embodiment: Further, the blanking component comprises a rotating shaft five 35 fixedly connected to the inner wall of the blanking pipe 6, the surface of the rotating shaft five 35 is fixedly connected with a gear one 36, the surface of the rotating shaft two 34 is fixedly connected with a gear two 33 engaged with the gear one 36, and a belt pulley transmission mechanism one 37 is arranged between the rotating shaft one 38 and the rotating shaft five 35, and an L-shaped baffle 19 is fixedly installed on the inner wall of the blanking pipe 6.

[0028] The surface of the blanking pipe 6 is fixedly installed with a driving box 8, the inner wall of the driving box 8 is fixedly connected with a rotating rod one 30 and two symmetrically arranged rotating rod twos 17, the surface of the blanking pipe 6 is fixedly connected with a mounting plate, the mounting plate is provided with a motor two 29, the output shaft of the motor two 29 is fixedly connected with a rotating rod three 16, the surface of the rotating rod three 16 is fixedly connected with a gear three 32, the surface of the rotating rod one 30 is fixedly connected with a gear four 31 engaged with the gear three 32, and a belt pulley transmission mechanism two 28 is arranged between the rotating rod one 30 and the two rotating rod twos 17, and the ends of the rotating rod three 16 and the two rotating rod twos 17 extending into the blanking pipe 6 are fixedly installed with crushing rollers 18.

[0029] More specifically, in the embodiment: As Figure 5 and Figure 7 shown, after starting the motor one 12, the reciprocating deflection of the connecting plate one 20 drives the rotating shaft one 38 to reciprocate, under the action of the belt pulley transmission mechanism one 37, the reciprocating rotation of the rotating shaft one 38 drives the rotating shaft five 35 to synchronously reciprocate, and under the transmission action of the gear one 36 and the gear two 33, the reciprocating rotation of the rotating shaft five drives the rotating shaft two 34 to reciprocate in the opposite direction of the rotating shaft one 38, so that the two guide plates 27 fixedly connected to the surfaces of the rotating shaft two 34 and the rotating shaft one 38 can reciprocate to deflect, so as to complete the blanking work of the sand soil in the blanking pipe 6; It is worth noting that, as Figure 6 shown, when the motor one 12 is started, the movement of the moving column in the arc-shaped frame 40 does not drive the arc-shaped frame 40 to move, therefore, the reciprocating deflection of the two guide plates 27 is not continuous, but after completing the blanking work of the sand soil in the blanking pipe 6 once, it will stop for a period of time; In the stop time, as Figure 3 and Figure 4As shown, under the screening working state of the sand, the motor 29 will be turned on, under the meshing action of the gear 32 and the gear 31, the rotating rod 16 will rotate reversely with the rotating rod 30, and under the transmission action of the pulley transmission mechanism 28, the two rotating rods 17 will rotate synchronously with the rotating rod 30, therefore, the crushing roller 18 fixedly connected with the rotating rod 16 will rotate reversely with the two crushing rollers 18 fixedly connected with the two rotating rods 17 below, under the action of the three crushing rollers 18, the sand poured into the hopper 7 in blocks can be broken before the sand screening operation, so as to ensure that the sand entering the screen 14 for screening treatment is more uniform in particle size, and the thoroughness of sand screening is further improved. In summary, after the motor 12 is turned on, under the linkage cooperation of multiple structures, the periodic intermittent feeding in the feeding pipe 6 is completed through the intermittent reciprocating deflection of the two guide plates 27, compared with the traditional continuous uninterrupted feeding mode, the excessive accumulation of sand on the screen 14 is avoided, the instantaneous load of the screen is reduced, the risk of blockage is reduced, and sufficient working time is provided for the crushing work of the three crushing rollers 18, so as to further improve the working efficiency of the nodular cast iron casting sand treatment device, which is worth popularizing and using.

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sand treatment device for ductile iron casting, comprising a treatment box (1), characterized in that: The upper surface of the processing box (1) is fixedly connected to a feeding pipe (6). The inner wall of the feeding pipe (6) is rotatably connected to two symmetrically arranged rotating shafts one (38) and two rotating shafts two (34). The surfaces of the rotating shafts one (38) and two rotating shafts two (34) are fixedly connected to a guide plate (27). The upper surface of the feeding pipe (6) is fixedly connected to a feeding hopper (7). The inner wall of the processing box (1) is fixedly connected to a limiting rod (25), and a screen frame (26) is slidably connected to the surface of the limiting rod (25). A screen (14) is fixedly connected to the inner wall of the screen frame (26). The processing box (1) is provided with a moving component for driving the screen frame (26) to reciprocate along the limiting rod (25) to perform sand and soil assisted screening. The processing box (1) is also equipped with a feeding component that is connected to the moving component in a transmission manner. The feeding component is used to drive the two guide plates (27) to reciprocate to perform intermittent feeding.

2. The sand treatment device for ductile iron casting according to claim 1, characterized in that, The surface of the processing box (1) is fixedly connected to a support column (2). A collection box (3) and a waste box (4) are provided below the processing box (1). A waste outlet (15) is opened on the surface of the processing box (1). A door (5) is provided on the surface of both the collection box (3) and the waste box (4). A control panel (11) is provided on the surface of the processing box (1).

3. The sand treatment device for ductile iron casting according to claim 1, characterized in that, The moving component includes a motor (12) mounted on the surface of the processing box (1), the output shaft of the motor (12) is fixedly connected to a rotating shaft (22), the surface of the rotating shaft (22) is fixedly connected to a turntable (21), and the surface of the turntable (21) is fixedly connected to a moving column (39). A connecting plate (20) is fixedly connected to the surface of the rotating shaft (38). A counterweight (41) is fixedly connected to the end of the connecting plate (20) away from the rotating shaft (38). An arc frame (40) is fixedly connected to the surface of the counterweight (41). An arc groove is provided on the surface of the arc frame (40) for the sliding column (39) to be adapted.

4. The sand treatment device for ductile iron casting according to claim 3, characterized in that, The surface of the counterweight (41) is fixedly connected to a connecting plate two (42), and the end of the connecting plate two (42) is hinged to a hinge plate (43). The end of the hinge plate (43) is hinged to the side of the screen frame (26), and a spring (47) is provided between the screen frame (26) and the inner wall of the processing box (1).

5. The sand treatment device for ductile iron casting according to claim 4, characterized in that, The surface of the processing box (1) is rotatably connected to a rotating shaft four (24), the surface of the rotating shaft four (24) is fixedly connected to a disc (23), the surface of the disc (23) is fixedly connected to an abutment plate (48), the surface of the turntable (21) is fixedly connected to a plurality of triangular teeth (45) arranged in a circular array, and the surface of the disc (23) is fixedly connected to a striking rod (44).

6. The sand treatment device for ductile iron casting according to claim 5, characterized in that, The surface of the processing box (1) is provided with a circular shell (13), and a coil spring (49) is provided at one end of the rotating shaft (24) that extends into the circular shell (13).

7. The sand treatment device for ductile iron casting according to claim 1, characterized in that, The feeding component includes a rotating shaft five (35) that is rotatably connected to the inner wall of the feeding tube (6). A gear one (36) is fixedly connected to the surface of the rotating shaft five (35). A gear two (33) that meshes with the gear one (36) is fixedly connected to the surface of the rotating shaft two (34). A belt pulley transmission mechanism one (37) is provided between the rotating shaft one (38) and the rotating shaft five (35). An L-shaped baffle (19) is fixedly installed on the inner wall of the feeding tube (6).

8. The sand treatment device for ductile iron casting according to claim 7, characterized in that, A drive box (8) is fixedly installed on the surface of the feed pipe (6). A rotating rod (30) and two symmetrically arranged rotating rods (17) are fixedly connected to the inner wall of the drive box (8). A mounting plate is fixedly connected to the surface of the feed pipe (6). A motor (29) is provided on the mounting plate. A rotating rod (16) is fixedly connected to the output shaft of the motor (29). A gear (32) is fixedly connected to the surface of the rotating rod (16). A gear (31) meshing with the gear (32) is fixedly connected to the surface of the rotating rod (30). A belt pulley transmission mechanism (28) is provided between the rotating rod (30) and the two rotating rods (17). A crushing roller (18) is fixedly installed at one end of the rotating rod (16) and the two rotating rods (17) that extend into the feed pipe (6).

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