CN215697731U

CN215697731U - Sand core adjusting device and sand core regeneration cyclic utilization system

Info

Publication number: CN215697731U
Application number: CN202120738706.3U
Authority: CN
Inventors: 朱岭生; 陈建波; 郝广西
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-02-01
Anticipated expiration: 2031-04-12

Abstract

The utility model provides a sand core adjusting device and a sand core recycling system, and belongs to the technical field of sand core recycling. The sand core adjusting device and the sand core recycling system provided by the utility model have the technical effects that the sand core can be circumferentially and rotatably adjusted in a horizontal plane, so that the direction of the sand core entering a crusher is conveniently adjusted, the crusher can crush the sand core smoothly, and the sand core crushing progress and efficiency are improved.

Description

Sand core adjusting device and sand core regeneration cyclic utilization system

Technical Field

The utility model belongs to the technical field of sand core recycling, and particularly relates to a sand core adjusting device and a sand core recycling system.

Background

In the production and manufacturing process of the nodular cast iron pipe, a sand core is needed, the sand core can be recycled in a normal condition, the sand core is fixed at a specific position in a sand mould, and then the nodular cast iron pipe is formed through centrifugal casting. Recycling of sand cores is required to be carried out by: sand core conveying, crushing, magnetic separation, transportation, burning back, cooling and other steps.

The sand core conveying refers to conveying a sand core to be recycled to a crushing process from a sand core storage area, the crushing process is generally carried out through a jaw crusher, the position of the sand core cannot be adjusted (mainly referring to the axial direction of the sand core and the direction of entering the crusher) in the sand core conveying process in the prior art, namely, the sand core cannot enter the crusher in a forward direction, the sand core is required to be adjusted in the transportation process or at a feeding port of the crusher because the placing position of the crusher is fixed, the sand core is generally subjected to azimuth adjustment by using a forklift, a crane or a manual work and the like, so that multiple processes of sand core recycling are caused, the adjustment is inconvenient, the sand core can enter the crusher in a forward direction after the adjustment, and the sand core can be completely crushed; on the contrary, the sand core which is not adjusted is difficult to enter the interior of the crusher, and the crushing progress of the crusher is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sand core adjusting device, and aims to solve the technical problems that the direction of feeding of a sand core into a crusher is inconvenient to adjust and the sand core is difficult to enter the crusher forwards.

In order to achieve the purpose, the utility model adopts the technical scheme that: the sand core adjusting device is arranged in a sand core conveying area of a sand core recycling system and used for adjusting the axial direction of a sand core to be the entering direction of a broken sand core in a breaking process, and comprises a support frame, a rotating mechanism, a driving part and a plurality of bearing rollers, wherein the support frame is supported on the ground or a fixed object; the rotating mechanism is arranged at the upper end of the support frame and can circumferentially rotate in a horizontal plane; the driving part is arranged on the support frame, is connected with the rotating mechanism and is used for driving the rotating mechanism to rotate; the sand core crushing device comprises a rotating mechanism, a plurality of bearing rollers, a plurality of sand cores and a plurality of bearing rollers, wherein the rotating mechanism is arranged at the upper end of the rotating mechanism, the bearing rollers can rotate automatically and rotate axially and are parallel to each other, the sand cores are supported by the bearing rollers, the bearing rollers enable the axial direction of the sand cores to be perpendicular to the rotating axial direction of the bearing rollers when the rotating mechanism rotates and supports the sand cores, and the bearing rollers are used for driving the sand cores to move axially to a crushing process after rotating.

As another embodiment of this application, rotary mechanism including have the upper end have circular recess the concave station, have be suitable for with circular recess looks adaptation circumference swivelling joint's revolving stage in the horizontal plane, the revolving stage lower extreme is rotatory to be pegged graft in the circular recess, and the upper end is used for supporting a plurality ofly the bearing roller, the drive division is located the concave station outside and with the revolving stage bottom is connected, and the drive the revolving stage is rotatory.

As another embodiment of this application, the bottom is equipped with a plurality of rotatory rollers that are the annular array and lay in the circular recess, rotatory roller axial is along the radial of circular recess, revolving stage lower extreme roll rotation is in a plurality of on the rotatory roller.

As another embodiment of this application the equipartition is equipped with a plurality of balls that can roll on the circular recess inside wall, revolving stage lower part lateral wall and a plurality of ball rolling friction contact.

As another embodiment of this application, the drive division including set firmly in motor on the support frame, both ends respectively with motor power take off end concreties with the concave station lateral wall rotates the pivot of connecting and set firmly in epaxial gear the bottom circumference of revolving stage upwards is equipped with and is the circular shape face gear, the gear with the transmission of face gear intermeshing.

As another embodiment of this application, the support frame includes can support a plurality of flexible posts on ground or fixture and all with a plurality of flexible post upper end articulated platform, rotary mechanism sets firmly in the platform upper end, it is a plurality of flexible post all can vertically stretch out and draw back and adjustable to psammitolite support height.

As another embodiment of this application, rotary mechanism top is equipped with and is used for stirring the psammitolite axial to the pipe mechanism that dials that crushing process removed, dial pipe mechanism including set up subaerial or the support on the fixture, set firmly slide on the support, suspend in midair and slide in jib on the slide rail and locate the jib bottom is used for stirring the driving lever that the psammitolite removed, the jib drives in sliding the driving lever removes along psammitolite axial ejection psammitolite.

As another embodiment of this application, dial tub mechanism still including locating the straight line ejector on the support, the ejector end of straight line ejector is equipped with the actuating lever the support with all be equipped with the rectangular shape through-hole that link up formula as an organic whole from top to bottom on the slide rail, the actuating lever is vertical to be passed and slides in the rectangular shape through-hole, the lower extreme with jib sliding end concreties, straight line ejector is used for the ejection the jib slides.

As another embodiment of this application rotary mechanism's side is equipped with and is used for to a plurality of transport the frame of psammitolite on the bearing roller, transport the frame and include two mutual articulated transfer tables and all locate a plurality of flexible support columns of two transfer tables bottom, two the transfer table is with the help of a plurality of flexible support column relative rotation.

The sand core adjusting device provided by the utility model has the beneficial effects that: compared with the prior art, the sand core adjusting device comprises a support frame, a rotating mechanism, a driving part and a plurality of bearing rollers, wherein the rotating mechanism is arranged at the upper end of the support frame and can circumferentially rotate in a horizontal plane, the driving part drives the rotating mechanism to rotate, the plurality of bearing rollers are uniformly arranged at the upper end of the rotating mechanism, can rotate automatically and are parallel to each other in the rotating axial direction, a plurality of sand cores are supported by the plurality of bearing rollers, the plurality of bearing rollers rotate by virtue of the rotating mechanism and enable the axial direction of the sand cores to be vertical to the rotating axial direction of the bearing rollers when bearing the sand cores, and the plurality of bearing rollers are used for rolling and driving the sand cores to move in the axial direction crushing process after rotating, so that the technical problems that the sand cores are inconvenient to feed into a crusher and are difficult to enter the crusher in the forward direction are solved, the sand core adjusting device can circumferentially rotate and adjust in the horizontal plane, the sand cores can conveniently enter the crusher and is convenient for the crusher to crush smoothly, the technical effects of the sand core crushing progress and efficiency are improved.

The utility model also provides a sand core recycling system which comprises a sand core recycling system body and the sand core adjusting device, and further comprises a storage rack arranged in the sand core storage area and used for storing the sand core, a plurality of supporting legs for telescopically supporting the storage rack are arranged at the bottom end of the storage rack, the pipe shifting mechanism is also arranged above the storage rack and used for shifting the sand core positioned on the storage rack to the transfer rack.

The sand core regeneration recycling system provided by the utility model has the beneficial effects that: compared with the prior art, the sand core recycling system comprises the sand core adjusting device, the sand core recycling system also comprises a storage rack arranged in the sand core storage area and used for storing sand cores, a plurality of supporting legs for supporting the storage rack in a telescopic mode are arranged at the bottom end of the storage rack, a pipe shifting mechanism is also arranged above the storage rack and used for shifting the sand cores on the storage rack to a transfer rack, the sand core recycling system has high sand core conveying efficiency, the entering direction of the sand cores entering a crusher can be adjusted, crushing is facilitated, and the whole operation progress and efficiency of sand core recycling are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sand core adjusting device provided in an embodiment of the present invention (in the figure, a circular broken line indicates a sand core, and a straight arrow indicates an entering direction of the sand core);

FIG. 2 is a schematic structural diagram of a sand core adjusting device, a pipe pulling mechanism and a crusher provided in the embodiment of the present invention;

FIG. 3 is a schematic structural view of a tube pulling mechanism of the sand core adjusting device shown in FIG. 2;

fig. 4 is a schematic view of a partial structure of a sand core recycling system according to an embodiment of the present invention.

In the figure: 1. a support frame; 11. a telescopic column; 12. a platform; 2. a rotation mechanism; 21. a concave platform; 22. a rotating table; 23. a circular groove; 24. a rotating roller; 25. a ball bearing; 3. a drive section; 31. a motor; 32. a rotating shaft; 33. a gear; 34. a face gear; 4. a carrying roller; 5. a pipe pulling mechanism; 51. a support; 52. a slide rail; 53. a boom; 54. a deflector rod; 55. a linear ejector; 56. a drive rod; 57. a strip-shaped through hole; 6. a transfer frame; 61. a transfer table; 62. a telescopic support column; 7. a storage rack; 71. supporting legs; 8. a baffle plate; 9. a jaw crusher.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 3 together, the sand core adjusting apparatus of the present invention will now be described. The sand core adjusting device is arranged in a sand core conveying area of a sand core recycling system and used for adjusting the axial direction of a sand core to be the entering direction of a broken sand core in a breaking process, and comprises a support frame 1, a rotating mechanism 2, a driving part 3 and a plurality of bearing rollers 4, wherein the support frame 1 is supported on the ground or a fixed object; the rotating mechanism 2 is arranged at the upper end of the support frame 1 and can rotate circumferentially in a horizontal plane; the driving part 3 is arranged on the support frame 1, is connected with the rotating mechanism 2 and is used for driving the rotating mechanism 2 to rotate; the upper end of the rotating mechanism 2 is arranged at the upper end of the bearing rollers 4 in an evenly distributed mode, the bearing rollers 4 can rotate automatically and rotate axially and are parallel to each other, the sand cores are supported by the bearing rollers 4, the sand core axial direction is perpendicular to the rotating axial direction of the bearing rollers 4 when the bearing rollers 4 rotate by means of the rotating mechanism 2 and bear the sand cores, and the bearing rollers 4 are used for driving the sand cores to move axially to a crushing process after rotating.

The entering direction of the broken sand core in the breaking process is a direction along a straight line, and the purpose is to enable the rotary axis of the sand core to coincide with the straight line direction, so that the sand core can gradually enter the inside of the breaker from head to tail and is gradually broken. The crushing machine used in the crushing process is a jaw crusher 9.

Compared with the prior art, the sand core adjusting device provided by the utility model comprises a support frame 1, a rotating mechanism 2, a driving part 3 and a plurality of bearing rollers 4, wherein the rotating mechanism 2 is arranged at the upper end of the support frame 1 and can rotate in the circumferential direction in a horizontal plane, the driving part 3 drives the rotating mechanism 2 to rotate, the plurality of bearing rollers 4 are uniformly distributed at the upper end of the rotating mechanism 2, the plurality of bearing rollers 4 can rotate automatically and have mutually parallel rotating axial directions, a plurality of sand cores are supported by the plurality of bearing rollers 4, the plurality of bearing rollers 4 rotate by means of the rotating mechanism 2 and enable the axial directions of the sand cores to be vertical to the rotating axial directions of the bearing rollers 4 when bearing the sand cores, the plurality of bearing rollers 4 are used for rolling and driving the sand cores to move along the axial direction crushing process after rotating, the technical problems that the feeding of the sand cores into the crusher is inconvenient to adjust the direction and the sand cores are difficult to enter the crusher in the forward direction are solved, the technical problem that the sand cores can be adjusted in the circumferential direction in the horizontal plane, and the sand cores can be conveniently adjusted in the direction of the crusher, the crusher is convenient to crush smoothly, and the technical effects of the sand core crushing progress and efficiency are improved.

Before a plurality of bearing roller 4 bearing psammitolite, will judge that the axial of psammitolite is in which direction or position, then start drive division 3, make rotary mechanism 2 rotatory and make the axial of bearing roller 4 and the axial of treating the psammitolite of bearing be perpendicular or approximate vertically state, then make the psammitolite transport to a plurality of bearing roller 4 on, many psammitolites that lie in like this on the bearing roller 4 are parallel to each other, and with bearing roller 4 axial vertical. The purpose of such a way is to make the psammitolite be convenient for to the feeding in breaker, be convenient for improve crushing efficiency.

Referring to fig. 1 to 3, as an embodiment of the sand core adjusting apparatus provided by the present invention, the rotating mechanism 2 includes a concave table 21 having a circular groove 23 at an upper end thereof, and a rotating table 22 adapted to fit with the circular groove 23 and connected to the circular groove 23 in a circumferential direction in a horizontal plane, the lower end of the rotating table 22 is rotatably inserted into the circular groove 23, and the upper end thereof is used for supporting a plurality of supporting rollers 4, and the driving portion 3 is disposed outside the concave table 21 and connected to the bottom end of the rotating table 22 and drives the rotating table 22 to rotate. The cross-section of concave station 21 is concave type, and circular recess 23 and revolving stage 22 are coaxial setting, and revolving stage 22 can be in circular recess 23 internal peripheral rotation, is convenient for adjust the position of placing of psammitolite, is convenient for to the feeding in the breaker. The rotary table 22 has an i-shaped cross section, and the lower end thereof is inserted into the circular groove 23 and rotated. A baffle 8 for preventing the sand cores from rolling off is arranged on one side of the upper end of the rotating platform 22, and the baffle 8 is made of an arc-shaped component.

In order to reduce the rotating friction force of the rotary table 22 in the circular recess 23, referring to fig. 1 to 3, as an embodiment of the sand core adjusting device provided by the present invention, a plurality of rotating rollers 24 arranged in an annular array are disposed at the bottom of the circular recess 23, the rotating rollers 24 axially extend along the radial direction of the circular recess 23, and the lower end of the rotary table 22 is rolled and rotated on the plurality of rotating rollers 24. The rotating rollers 24 are rotatable, and the plurality of rotating rollers 24 in the radial direction of the circular groove 23 are located on the same straight line.

In order to reduce the rotating friction force of the rotary table 22 in the circular groove 23, referring to fig. 1 to 3, as an embodiment of the sand core adjusting device provided by the present invention, a plurality of rolling balls 25 are uniformly distributed on the inner side wall of the circular groove 23, and the outer side wall of the lower portion of the rotary table 22 is in rolling friction contact with the plurality of balls 25.

Referring to fig. 1 to 3, the driving portion 3 includes a motor 31 fixed on the supporting frame 1, a rotating shaft 32 having two ends respectively fixed to a power output end of the motor 31 and rotatably connected to an outer side wall of the concave table 21, and a gear 33 fixed on the rotating shaft 32, wherein a circular face gear 34 is disposed on a bottom circumferential direction of the rotating table 22, and the gear 33 and the face gear 34 are engaged with each other for transmission. The rotating shaft 32 is disposed coaxially with the gear 33. The driving unit 3 transmits power to the rotating mechanism 2 by meshing the gear 33 and the face gear 34 with each other.

Specifically, the motor 31 is arranged to rotate positively and negatively, the selected motor 31 is a speed reducing motor, the output rotating speed of the speed reducing motor can be adjusted, the adjusting of the rotating speed of the sand core is facilitated, and the sand core is not thrown out on the bearing rollers 4.

Referring to fig. 1 to 3, as a specific embodiment of the sand core adjusting apparatus provided by the present invention, the supporting frame 1 includes a plurality of telescopic pillars 11 that can be supported on the ground or a fixed object, and a platform 12 that is hinged to the upper ends of the plurality of telescopic pillars 11, the rotating mechanism 2 is fixed to the upper end of the platform 12, and the plurality of telescopic pillars 11 can vertically extend and retract and can adjust the supporting height for the sand core. The telescopic column 11 is an actuator such as an electric push rod or an air cylinder which can be pushed and retracted in a linear direction, and the platform 12 is a circular or rectangular plate-shaped structural member whose upper end can support the concave table 21 and the motor 31 of the driving part 3, and a plurality of rotating rollers 24.

Referring to fig. 1 to 3, a tube pulling mechanism 5 for pulling the sand core to move axially to the crushing process is disposed above the rotating mechanism 2, the tube pulling mechanism 5 includes a support 51 disposed on the ground or a fixed object, a slide rail 52 fixed on the support 51, a hanger rod 53 suspended and sliding on the slide rail 52, and a rod 54 disposed at the bottom end of the hanger rod 53 for pulling the sand core to move, and the hanger rod 53 drives the rod 54 to push the sand core to move axially along the sand core in the sliding process. Through dialling pipe mechanism 5, can save the manual work and push away the psammitolite, alleviate intensity of labour, dial pipe mechanism 5 and can be connected with subaerial controller or remote controller, through the control of controller or remote controller, just can realize the ejection to the psammitolite, make the psammitolite enter into inside the breaker. In addition, the horizontal ejection position of the sand core by the pipe shifting mechanism 5 can be adjusted, the ejection position of the sand core can be adjusted in the height direction, the adjustment is convenient and flexible, and the sand core can be rapidly moved to the crusher. The curved arc of the deflector rod 54 can be adapted to the outer arc of the core and move the core in translation.

Specifically, the shifting lever 54 is an arc-shaped member, and a non-slip pad is arranged on one side surface of the shifting lever close to the sand core, so that the shifting lever can prevent slipping, reduce rigid contact with the sand core, and have certain buffering to prevent damage to the sand core.

As a specific embodiment of the sand core adjusting device provided by the present invention, please refer to fig. 1 to 3, the pipe pulling mechanism 5 further includes a linear ejector 55 disposed at the upper end of the support 51, a driving rod 56 is disposed at the ejection end of the linear ejector 55, a long strip-shaped through hole 57 penetrating the support 51 and the slide rail 52 into an integral whole is disposed on both the support 51 and the slide rail 52, the driving rod 56 vertically penetrates and slides in the long strip-shaped through hole 57, the lower end of the driving rod 56 is fixedly connected with the sliding end of the hanging rod 53, and the linear ejector 55 is used for ejecting the hanging rod 53 to slide. The linear ejector 55 is an actuator, such as an electric push rod or an air cylinder, which can be pushed in a telescopic manner in a linear direction. The driving rod 56 is fixedly connected to the pushing end of the linear ejector 55 and arranged perpendicular to each other.

As a specific embodiment of the sand core adjusting apparatus provided by the present invention, please refer to fig. 1 to 3, a transfer frame 6 for transferring sand cores onto a plurality of carrier rollers 4 is disposed at a side of a rotating mechanism 2, the transfer frame 6 includes two transfer tables 61 hinged to each other and a plurality of telescopic support columns 62 disposed at bottom ends of the two transfer tables 61, and the two transfer tables 61 can rotate relatively by means of the plurality of telescopic support columns 62. The telescopic supporting column 62 is an actuator capable of being pushed in a telescopic manner along a linear direction, such as an electric push rod or an air cylinder, and can adjust the height of the transfer table 61 and the relative rotation angle between the two transfer tables 61, and the sand core can naturally roll onto the bearing rollers 4 through the adjustment of the angle. The height of the transfer frame 6 is greater than the height of the plurality of carrier rollers 4.

The utility model also provides a sand core recycling system, which comprises a sand core recycling system body and the sand core adjusting device, and please refer to fig. 4, the sand core recycling system also comprises a storage rack 7 arranged in the sand core storage area and used for storing the sand core, a plurality of supporting legs 71 used for telescopically supporting the storage rack 7 are arranged at the bottom end of the storage rack 7, a pipe shifting mechanism 5 is also arranged above the storage rack 7, and the pipe shifting mechanism 5 is used for shifting the sand core positioned on the storage rack 7 to a transfer rack 6.

The sand core regeneration recycling system provided by the utility model has the beneficial effects that: compared with the prior art, the sand core recycling system comprises the sand core adjusting device, the sand core recycling system also comprises a storage rack 7 for storing sand cores, a plurality of supporting legs 71 for supporting the storage rack 7 in a telescopic mode are arranged at the bottom end of the storage rack 7, a pipe shifting mechanism 5 is also arranged above the storage rack 7, the pipe shifting mechanism 5 is used for shifting the sand cores on the storage rack 7 to a transfer rack 6, the sand core conveying efficiency is high, the entering direction of the sand cores entering a crusher can be adjusted, the sand cores are convenient to crush, and the whole operation progress and efficiency of sand core recycling are improved.

Specifically, the supporting legs 71 are manually adjustable telescopic rods or electrically adjustable telescopic rods or cylinders with one of hydraulic cylinders, and the number of the supporting legs 71 is at least 4 and is a double number, such as 4, 6 or 8.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The sand core adjusting device is characterized in that a sand core conveying area of a sand core regeneration and recycling system is arranged in and used for adjusting the axial direction of a sand core to be the entering direction of a broken sand core in a breaking process, and the sand core adjusting device comprises:

the supporting frame is supported on the ground or a fixed object;

the rotating mechanism is arranged at the upper end of the support frame and can rotate circumferentially in a horizontal plane;

the driving part is arranged on the support frame, is connected with the rotating mechanism and is used for driving the rotating mechanism to rotate; and

the sand core crushing device comprises a rotating mechanism, a plurality of bearing rollers and a plurality of sand cores, wherein the rotating mechanism is arranged at the upper end of the rotating mechanism, the bearing rollers are uniformly distributed at the upper end of the rotating mechanism, the bearing rollers can rotate automatically and are parallel to each other in the rotating axial direction, the sand cores are supported by the bearing rollers, the axial direction of the sand cores is perpendicular to the rotating axial direction of the bearing rollers when the bearing rollers rotate by means of the rotating mechanism and bear the sand cores, and the bearing rollers are used for rolling and driving the sand cores to move in the axial direction to a crushing process after rotating.

2. The sand core adjusting device as claimed in claim 1, wherein the rotary mechanism comprises a concave table having a circular groove at an upper end, and a rotary table having a circumferential rotary connection adapted to fit into the circular groove in a horizontal plane, wherein a lower end of the rotary table is rotatably inserted into the circular groove, and an upper end thereof is used for supporting a plurality of carrier rollers, and the driving portion is disposed outside the concave table and connected to a lower end of the rotary table and drives the rotary table to rotate.

3. The sand core adjusting device as claimed in claim 2, wherein a plurality of rotary rollers are arranged in an annular array at the bottom of the circular groove, the rotary rollers axially extend in the radial direction of the circular groove, and the lower end of the rotary table is rotatably rolled on the plurality of rotary rollers.

4. The sand core adjusting device as claimed in claim 2, wherein a plurality of rolling balls are uniformly distributed on the inner side wall of the circular groove, and the outer side wall of the lower part of the rotary table is in rolling friction contact with the plurality of balls.

5. The sand core adjusting device as claimed in claim 2, wherein the driving part comprises a motor fixed on the supporting frame, a rotating shaft with two ends respectively fixed with the power output end of the motor and rotatably connected with the outer side wall of the concave table, and a gear fixed on the rotating shaft, a face gear in a circular shape is arranged on the circumference of the bottom end of the rotating table, and the gear and the face gear are in meshed transmission.

6. The sand core adjusting device as claimed in claim 1, wherein the supporting frame comprises a plurality of telescopic columns which can be supported on the ground or a fixed object and a platform which is hinged with the upper ends of the plurality of telescopic columns, the rotating mechanism is fixed on the upper end of the platform, and the plurality of telescopic columns can vertically extend and retract and can adjust the supporting height of the sand core.

7. The sand core adjusting device as claimed in claim 1, wherein a pipe pulling mechanism for pulling the sand core to move axially to the crushing process is provided above the rotating mechanism, the pipe pulling mechanism comprises a support arranged on the ground or on a fixed object, a slide rail fixedly arranged on the support, a hanger rod suspended and sliding on the slide rail, and a pulling rod arranged at the bottom end of the hanger rod for pulling the sand core to move, and the hanger rod drives the pulling rod to push the sand core to move axially along the sand core in sliding.

8. The sand core adjusting device as claimed in claim 7, wherein the tube pulling mechanism further comprises a linear ejector arranged at the upper end of the bracket, the ejector end of the linear ejector is provided with a driving rod, the bracket and the slide rail are respectively provided with an elongated through hole which is integrally penetrated up and down, the driving rod vertically penetrates through and slides in the elongated through hole, the lower end of the driving rod is fixedly connected with the sliding end of the suspender, and the linear ejector is used for ejecting the suspender to slide.

9. The sand core adjusting device as claimed in claim 8, wherein a transfer frame for transferring the sand core onto the plurality of supporting rollers is provided at a side of the rotating mechanism, the transfer frame comprises two transfer tables hinged to each other and a plurality of telescopic supporting columns provided at bottom ends of the two transfer tables, and the two transfer tables are relatively rotatable by means of the plurality of telescopic supporting columns.

10. The sand core recycling system is characterized by comprising a sand core recycling system body and the sand core adjusting device according to claim 9, and further comprising a storage rack arranged in the sand core storage area and used for storing sand cores, wherein a plurality of supporting legs for telescopically supporting the storage rack are arranged at the bottom end of the storage rack, the pipe shifting mechanism is also arranged above the storage rack and used for shifting the sand cores on the storage rack to the transfer rack.