A production device and process for molding material for casting

Abstract

The present invention relates to the field of casting technology, and more specifically, to a production device and process for molding materials for casting, including a support and adjustment device and a crushing and screening device, wherein the crushing and screening device is evenly arranged on the support and adjustment device, and the support and adjustment device includes a first synchronous rotating wheel, a first synchronous rotating belt, a rotation control gear, a first support vertical plate, a driving adjustment gear, a second support vertical plate and a first motor, wherein the first support vertical plate is symmetrically arranged, the second support vertical plate is symmetrically arranged, and the second support vertical plate is located on the outside of the first support vertical plate, and the rotation control gear is evenly rotatably installed between the first support vertical plate and the upper part of the second support vertical plate. The present invention can control the rotation and swing of each crushing and screening device through the support and adjustment device, so that the sand particles entering the crushing and screening device can be fully squeezed and crushed, and the crushed sand particles can be easily discharged, thereby improving the efficiency of production and preparation.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a production device and process of a molding material for casting. Background Art

[0002] Modeling materials for casting are mostly made of fine and uniform sand. However, the existing production equipment for casting modeling materials cannot make the grinding wheel particles reach the specified particles during use, so that some larger sand particles are contained inside, resulting in poor quality of the produced castings. Therefore, a device is needed to solve the above-mentioned problems. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a production device and process for a molding material for casting.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a production device and process for molding materials for casting, including a support and adjustment device and a crushing and screening device, the crushing and screening device is evenly arranged on the support and adjustment device, the support and adjustment device includes a first synchronous rotating wheel, a first synchronous rotating belt, a rotation control gear, a first support vertical plate, a driving adjustment gear, a second support vertical plate and a first motor, the first support vertical plate is symmetrically arranged, the second support vertical plate is symmetrically arranged, and the second support vertical plate is located on the outside of the first support vertical plate, the rotation control gear is evenly rotatably installed between the upper parts of the first support vertical plate and the second support vertical plate, the driving adjustment gear is evenly rotatably installed at the bottom of the first support vertical plate and the second support vertical plate, and the rotation control gear is meshed and connected with the driving adjustment gear, the first synchronous rotating wheel is fixedly connected to the outer ends of the rotation control gear and the driving adjustment gear, the first synchronous rotating belt is rotatably installed between the first synchronous rotating wheel, the first motor is fixedly installed in the middle of the second support vertical plate, and the driving end of the first motor is fixedly connected to the middle of the outer end of the rotation control gear located in the middle.

[0005] Preferably, a fixed mounting plate is fixedly mounted on the outer end of the second supporting vertical plate, and fixing holes are evenly opened through the fixed mounting plate.

[0006] Preferably, the outer end of the driving adjustment gear located in the middle is fixedly connected to a third synchronous rotating wheel, a second synchronous rotating wheel is rotatably installed below the third synchronous rotating wheel, a synchronous rotating rod is fixedly connected between the second synchronous rotating wheels, and the synchronous rotating rod is rotatably clamped on the bottom ends of the first supporting vertical plate and the second supporting vertical plate, and the third synchronous rotating wheel is rotatably clamped on the second supporting vertical plate.

[0007] Preferably, the crushing and screening device includes a screening and crushing frame, a first fixed mounting ring, a first electric push rod, a screening cylinder, a fixed connecting plate, a second fixed mounting ring, a second electric push rod and a sealing cover plate, the fixed connecting plate is fixedly connected to the two side ends of the screening and crushing frame, the second fixed mounting ring is fixedly mounted on the upper end of the screening and crushing frame, the second electric push rod is evenly fixedly mounted on the upper end of the second fixed mounting ring, the sealing cover plate is fixedly connected to the upper end of the second electric push rod, and the sealing cover plate is sealingly connected to the screening and crushing frame, the first fixed mounting ring is fixedly connected to the bottom end of the screening and crushing frame, the first electric push rod is evenly fixedly mounted on the first fixed mounting ring, the first fixed mounting ring is fixedly connected to the bottom end of the first electric push rod, and the screening cylinder is fixedly connected to the first fixed mounting ring.

[0008] Preferably, discharge ports are provided through both side ends of the screening and crushing frame, the screening cylinder is slidably engaged in the interior of the screening and crushing frame, and the screening cylinder blocks the discharge ports.

[0009] Preferably, an extrusion crushing ring is evenly and fixedly installed on the inner wall of the screening and crushing frame, and a crushing convex plate is evenly and fixedly installed on the extrusion crushing ring.

[0010] Preferably, an extrusion toothed disc is evenly rotated inside the screening and crushing frame, a second motor is fixedly installed in the middle of the bottom end of the screening and crushing frame, and a driving end of the second motor is fixedly connected to the middle of the extrusion toothed disc.

[0011] Preferably, the fixed connection disk is fixedly connected to the middle part of the rotation control gear, three extrusion tooth disks are provided, and there is a gap between the extrusion tooth disks and the crushing convex plate.

[0012] Preferably, a conical material guide tray is fixedly installed on the outside of the screening and crushing frame. The conical material guide tray can allow the sand discharged from the discharge port after filtering through the screening cylinder to be discharged to the outside of the device through the guide of the conical material guide tray, so that the discharged sand is easy to collect and use.

[0013] A production process of a production device for a casting molding material, which comprises the following steps:

[0014] S1, start each second electric push rod to lift the sealing cover plate from the screening and crushing frame, then pour the prepared sand into the screening and crushing frame, and then reset the sealing cover plate to seal and fix it on the screening and crushing frame;

[0015] S2, then start the first motor, at which time the first motor drives a rotation control gear to rotate, and under the action of the first synchronous rotating wheel and the first synchronous rotating belt, each rotation control gear rotates synchronously, and under the synchronous driving action of the third synchronous rotating wheel, the second synchronous rotating belt, the second synchronous rotating wheel and the synchronous rotating rod, each driving adjustment gear runs, and each rotation control gear is stably supported and rotated by the driving adjustment gear, and each rotating rotation control gear can drive each crushing and screening device to rotate and swing;

[0016] S3. When each crushing and screening device rotates and swings, each second motor is started at this time, and each extrusion toothed disc can be driven by the second motor to rotate forward and backward in the middle of the screening and crushing frame, and the screening and crushing frame is swinging at this time, so that the sand added to the inside of the screening and crushing frame can be transported to between the extrusion toothed disc and the extrusion crushing ring, and under the action of the extrusion toothed disc and the crushing convex plate, the sand is squeezed and crushed, and discharged through the baffle screening of the screening cylinder, so that the discharged particles meet the requirements of preparation and production, and the larger particles continue to be crushed inside the screening and crushing frame.

[0017] Beneficial effects of the present invention:

[0018] 1. The support and adjustment device provided in the present invention can control the rotation and swing of each crushing and screening device, so that the sand particles entering the crushing and screening device can be fully squeezed and crushed, and the crushed sand particles can be easily discharged, thereby improving the efficiency of production and preparation.

[0019] 2. The present invention can drive each extrusion toothed disc to rotate forward and backward in the middle of the screening and crushing frame through the second motor, and the screening and crushing frame is swinging at this time, so that the sand added to the inside of the screening and crushing frame can be transported to between the extrusion toothed disc and the extrusion crushing ring, and under the action of the extrusion toothed disc and the crushing convex plate, the sand is squeezed and crushed, and discharged through the baffle screening of the screening cylinder, so that the discharged particles meet the requirements of preparation and production, and the larger particles continue to be crushed inside the screening and crushing frame, so that the material particles discharged from the present equipment are uniform and meet the requirements, and the particles that do not meet the requirements will not be discharged for further crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body in the present invention from the front perspective;

[0022] Figure 2 It is a schematic diagram of the side-view stereoscopic structure of the main body in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the support adjustment device in the present invention;

[0024] Figure 4 It is a schematic diagram of the bottom structure of the support and adjustment device in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the crushing and screening device in the present invention;

[0026] Figure 6 It is a schematic diagram of the split structure of the screening and crushing frame in the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of the screening and crushing frame in the present invention;

[0028] Figure 8 It is a schematic diagram of the bottom structure of the screening and crushing frame in the present invention.

[0029] In the figure: 1-support and adjustment device, 2-crushing and screening device, 3-first synchronous rotating wheel, 4-first synchronous rotating belt, 5-rotation control gear, 6-first support vertical plate, 7-drive adjustment gear, 8-second support vertical plate, 9-fixed mounting plate, 10-synchronous rotating rod, 11-second synchronous rotating wheel, 12-second synchronous rotating belt, 13-third synchronous rotating wheel, 14-first motor, 15-screening and crushing frame, 16-first fixed mounting ring, 17-first electric push rod, 18-screening cylinder, 19-fixed connecting disk, 20-conical material guide tray, 21-second fixed mounting ring, 22-second electric push rod, 23-sealing cover plate, 24-extrusion toothed disk, 25-crushing convex plate, 26-extrusion crushing ring, 27-discharge port, 29-second motor. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] The present invention is further described below in conjunction with the accompanying drawings.

[0033] Embodiment 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a production device and process of a molding material for casting of the present invention comprises a support and adjustment device 1 and a crushing and screening device 2, wherein the crushing and screening device 2 is evenly arranged on the support and adjustment device 1, and the support and adjustment device 1 comprises a first synchronous rotating wheel 3, a first synchronous rotating belt 4, a rotation control gear 5, a first support vertical plate 6, a driving adjustment gear 7, a second support vertical plate 8 and a first motor 14, wherein the first support vertical plate 6 is symmetrically arranged, the second support vertical plate 8 is symmetrically arranged, and the second support vertical plate 8 is located on the outside of the first support vertical plate 6, the rotation control gear 5 is evenly rotatably installed between the first support vertical plate 6 and the upper part of the second support vertical plate 8, and the driving adjustment gear 7 is evenly rotatably installed between the first support vertical plate 6 and the second support vertical plate 8. The bottom of the support plate 8 is in time, and the rotation control gear 5 is meshed with the drive adjustment gear 7. The first synchronous rotating wheel 3 is fixedly connected to the outer ends of the rotation control gear 5 and the drive adjustment gear 7. The first synchronous rotating belt 4 is rotatably installed between the first synchronous rotating wheels 3. The first motor 14 is fixedly installed in the middle of the second supporting plate 8, and the driving end of the first motor 14 is fixedly connected to the middle of the outer end of the rotation control gear 5 located in the middle. The support and adjustment device 1 can be set to control each crushing and screening device 2 to rotate and swing, so that the sand particles entering the crushing and screening device 2 can be fully squeezed and crushed, and the crushed sand particles can be easily discharged, so that the efficiency of production and preparation is improved.

[0034] A fixed mounting plate 9 is fixedly mounted on the outer end of the second supporting vertical plate 8, and fixing holes are evenly penetrated through the fixed mounting plate 9 to facilitate the fixed installation and use of the device.

[0035] The outer end of the driving adjustment gear 7 located in the middle is fixedly connected with a third synchronous rotating wheel 13, and the second synchronous rotating wheel 11 is rotatably installed below the third synchronous rotating wheel 13. A synchronous rotating rod 10 is fixedly connected between the second synchronous rotating wheels 11, and the synchronous rotating rod 10 is rotatably clamped at the bottom ends of the first supporting vertical plate 6 and the second supporting vertical plate 8, and the third synchronous rotating wheel 13 is rotatably clamped on the second supporting vertical plate 8 to play a limiting role.

[0036] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the crushing and screening device 2 includes a screening and crushing frame 15, a first fixed mounting ring 16, a first electric push rod 17, a screening cylinder 18, a fixed connection plate 19, a second fixed mounting ring 21, a second electric push rod 22 and a sealing cover plate 23, wherein the fixed connection plate 19 is fixedly connected to both side ends of the screening and crushing frame 15, the second fixed mounting ring 21 is fixedly installed on the upper end of the screening and crushing frame 15, the second electric push rod 22 is evenly fixedly installed on the upper end of the second fixed mounting ring 21, and the sealing cover plate 23 is fixedly connected to the upper end of the second electric push rod 22. end, and the sealing cover plate 23 is sealed and fixedly connected to the screening and crushing frame 15, the first fixed mounting ring 16 is fixedly connected to the bottom end of the screening and crushing frame 15, the first electric push rod 17 is evenly fixedly mounted on the first fixed mounting ring 16, the first fixed mounting ring 16 is fixedly connected to the bottom end of the first electric push rod 17, and the screening drum 18 is fixedly connected to the first fixed mounting ring 16. Starting the first electric push rod 17 can make the first fixed mounting ring 16 and the screening drum 18 move downward, so that the screening drum 18 is discharged from the inside of the screening and crushing frame 15.

[0037] Discharge ports 27 are formed through both side ends of the screening and crushing frame 15 , and the screening cylinder 18 is slidably connected to the inside of the screening and crushing frame 15 , and the screening cylinder 18 blocks the discharge ports 27 to play a role in screening and filtering.

[0038] The inner wall of the screening and crushing frame 15 is evenly fixedly installed with an extrusion and crushing ring 26, and the extrusion and crushing ring 26 is evenly fixedly installed with a crushing convex plate 25 to play the role of extrusion and crushing.

[0039] An extrusion toothed disc 24 is evenly rotated inside the screening and crushing frame 15, a second motor 29 is fixedly installed in the middle of the bottom end of the screening and crushing frame 15, and the driving end of the second motor 29 is fixedly connected to the middle of the extrusion toothed disc 24, so as to realize the function of driving rotation adjustment.

[0040] The fixed connection disk 19 is fixedly connected to the middle part of the rotation control gear 5. Three extrusion tooth disks 24 are provided. There is a gap between the extrusion tooth disks 24 and the crushing convex plates 25, which facilitates the extrusion and crushing of sand particles.

[0041] The working principle of embodiment 1 is as follows: the fixed installation plate 9 is provided to facilitate the fixed installation and use of the device, each second electric push rod 22 is started to lift the sealing cover plate 23 from the screening and crushing frame 15, and then the prepared sand is poured into the interior of the screening and crushing frame 15, and then the sealing cover plate 23 is reset and sealed and fixed on the screening and crushing frame 15, and then the first motor 14 is started, at this time, the first motor 14 drives a rotation control gear 5 to rotate, and under the action of the first synchronous rotating wheel 3 and the first synchronous rotating belt 4, each rotation control gear 5 is synchronously rotated, and under the synchronous driving action of the third synchronous rotating wheel 13 and the second synchronous rotating belt 12, the second synchronous rotating wheel 11 and the synchronous rotating rod 10, each driving adjustment gear 7 is operated, and each rotation control gear 5 is stably supported and rotated by the driving adjustment gear 7, and each rotating rotation control gear 5 can drive each crushing and screening device 2 to rotate and swing;

[0042] When each crushing and screening device 2 rotates and swings, each second motor 29 is started at this time, and each extrusion toothed disc 24 can be driven by the second motor 29 to rotate forward and backward in the middle of the screening and crushing frame 15, and the screening and crushing frame 15 is swinging at this time, so that the sand added to the inside of the screening and crushing frame 15 can be transported to between the extrusion toothed disc 24 and the extrusion crushing ring 26, and under the action of the extrusion toothed disc 24 and the crushing convex plate 25, the sand is squeezed and crushed, and discharged through the baffle screening of the screening cylinder 18, so that the discharged particles meet the requirements of preparation and production, and the larger particles continue to be crushed inside the screening and crushing frame 15.

[0043] A production process of a production device for a casting molding material, which comprises the following steps:

[0044] S1, start each second electric push rod 22 to lift the sealing cover plate 23 from the screening and crushing frame 15, then pour the prepared sand into the screening and crushing frame 15, and then reset the sealing cover plate 23 to seal and fix it on the screening and crushing frame 15;

[0045] S2, then start the first motor 14, at this time the first motor 14 drives a rotation control gear 5 to rotate, under the action of the first synchronous rotating wheel 3 and the first synchronous rotating belt 4, each rotation control gear 5 is rotated synchronously, and under the synchronous driving action of the third synchronous rotating wheel 13, the second synchronous rotating belt 12, the second synchronous rotating wheel 11 and the synchronous rotating rod 10, each driving adjustment gear 7 is operated, and each rotation control gear 5 is stably supported and rotated by driving the adjustment gear 7, and each rotating rotation control gear 5 can drive each crushing and screening device 2 to rotate and swing;

[0046] S3. When each crushing and screening device 2 rotates and swings, each second motor 29 is started, and each extrusion toothed disc 24 can be driven to rotate forward and backward in the middle of the screening and crushing frame 15 by the second motor 29. At this time, the screening and crushing frame 15 is swinging, so that the sand added to the inside of the screening and crushing frame 15 can be transported to between the extrusion toothed disc 24 and the extrusion crushing ring 26, and under the action of the extrusion toothed disc 24 and the crushing convex plate 25, the sand is squeezed and crushed, and is discharged through the barrier screening of the screening cylinder 18, so that the discharged particles meet the requirements of preparation and production, and the larger particles continue to be crushed inside the screening and crushing frame 15.

[0047] Embodiment 2, on the basis of embodiment 1, as Figure 5 As shown, a conical material guide tray 20 is fixedly installed on the outside of the screening and crushing frame 15.

[0048] When implementing this embodiment, the conical material guide tray 20 can be set so that the sand discharged from the discharge port 27 after filtering through the screening drum 18 can be discharged to the outside of the device through the conical material guide tray 20, so that the discharged sand is easy to collect and use.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for molding materials for casting, comprising a support and adjustment device (1) and a crushing and screening device (2), characterized in that: The crushing and screening device (2) is evenly arranged on the support and adjustment device (1), and the support and adjustment device (1) comprises a first synchronous rotating wheel (3), a first synchronous rotating belt (4), a rotation control gear (5), a first support vertical plate (6), a drive adjustment gear (7), a second support vertical plate (8) and a first motor (14), the first support vertical plate (6) being symmetrically arranged, the second support vertical plate (8) being symmetrically arranged, and the second support vertical plate (8) being located on the outside of the first support vertical plate (6), the rotation control gear (5) being evenly rotatably installed between the first support vertical plate (6) and the upper part of the second support vertical plate (8), and the drive adjustment gear (7) being arranged on the second support vertical plate (8). The driving adjustment gear (7) is evenly rotatably mounted between the bottom of the first supporting upright plate (6) and the second supporting upright plate (8), and the rotation control gear (5) is meshingly connected with the driving adjustment gear (7), the first synchronous rotating wheel (3) is fixedly connected to the outer ends of the rotation control gear (5) and the driving adjustment gear (7), the first synchronous rotating belt (4) is rotatably mounted between the first synchronous rotating wheel (3), the first motor (14) is fixedly mounted in the middle of the second supporting upright plate (8), and the driving end of the first motor (14) is fixedly connected to the middle of the outer end of the rotation control gear (5) located in the middle; The crushing and screening device (2) comprises a screening and crushing frame (15), a first fixed mounting ring (16), a first electric push rod (17), a screening cylinder (18), a fixed connection plate (19), a second fixed mounting ring (21), a second electric push rod (22) and a sealing cover plate (23), wherein the fixed connection plate (19) is fixedly connected to both side ends of the screening and crushing frame (15), the second fixed mounting ring (21) is fixedly mounted on the upper end of the screening and crushing frame (15), and the second electric push rod (22) is evenly fixedly mounted on the upper end of the second fixed mounting ring (21). end, the sealing cover plate (23) is fixedly connected to the upper end of the second electric push rod (22), and the sealing cover plate (23) is sealingly fixedly connected to the screening and crushing frame (15), the first fixed mounting ring (16) is fixedly connected to the bottom end of the screening and crushing frame (15), the first electric push rod (17) is evenly fixedly mounted on the first fixed mounting ring (16), the first fixed mounting ring (16) is fixedly connected to the bottom end of the first electric push rod (17), and the screening cylinder (18) is fixedly connected to the first fixed mounting ring (16); The two side ends of the screening and crushing frame (15) are penetrated with discharge ports (27), the screening cylinder (18) is slidably engaged inside the screening and crushing frame (15), and the screening cylinder (18) blocks the discharge ports (27); An extrusion crushing ring (26) is evenly and fixedly mounted on the inner wall of the screening and crushing frame (15), and a crushing convex plate (25) is evenly and fixedly mounted on the extrusion crushing ring (26); An extrusion toothed disc (24) is evenly and rotatably mounted inside the screening and crushing frame (15), a second motor (29) is fixedly mounted at the middle of the bottom end of the screening and crushing frame (15), and a driving end of the second motor (29) is fixedly connected to the middle of the extrusion toothed disc (24); The fixed connection disk (19) is fixedly connected to the middle part of the rotation control gear (5), three extrusion tooth disks (24) are provided, and a gap exists between the extrusion tooth disks (24) and the crushing convex plate (25).

2. The production device of a casting molding material according to claim 1, characterized in that: A fixed mounting plate (9) is fixedly mounted on the outer end of the second supporting upright plate (8), and fixing holes are evenly penetrated through the fixed mounting plate (9).

3. The production device of a molding material for casting according to claim 2, characterized in that: The outer end of the driving adjustment gear (7) located in the middle is fixedly connected to a third synchronous rotating wheel (13), a second synchronous rotating wheel (11) is rotatably mounted below the third synchronous rotating wheel (13), a synchronous rotating rod (10) is fixedly connected between the second synchronous rotating wheels (11), and the synchronous rotating rod (10) is rotatably clamped to the bottom ends of the first supporting upright plate (6) and the second supporting upright plate (8), and the third synchronous rotating wheel (13) is rotatably clamped to the second supporting upright plate (8).

4. The production device of a molding material for casting according to claim 3, characterized in that: A conical material guide tray (20) is fixedly mounted on the outside of the screening and crushing frame (15).

5. A production process of a production device for casting molding material, applicable to the production device for casting molding material according to claim 4, characterized in that: It has the following steps: S1, starting each second electric push rod (22) to lift the sealing cover plate (23) from the screening and crushing frame (15), then pouring the prepared sand into the interior of the screening and crushing frame (15), and then resetting the sealing cover plate (23) to seal and fix it on the screening and crushing frame (15); S2, then starting the first motor (14), at which time the first motor (14) drives a rotation control gear (5) to rotate, and under the action of the first synchronous rotating wheel (3) and the first synchronous rotating belt (4), each rotation control gear (5) rotates synchronously, and under the synchronous driving action of the third synchronous rotating wheel (13), the second synchronous rotating belt (12), the second synchronous rotating wheel (11) and the synchronous rotating rod (10), each driving adjustment gear (7) operates, and each rotation control gear (5) is stably supported and rotated by the driving adjustment gear (7), and each rotating rotation control gear (5) can drive each crushing and screening device (2) to rotate and swing; S3. When each crushing and screening device (2) rotates and swings, each second motor (29) is started. The second motor (29) can drive each extrusion toothed disc (24) to rotate forward and backward in the middle of the screening and crushing frame (15). At this time, the screening and crushing frame (15) is swinging, so that the sand particles added to the inside of the screening and crushing frame (15) can be transported to between the extrusion toothed disc (24) and the extrusion crushing ring (26). Under the action of the extrusion toothed disc (24) and the crushing convex plate (25), the sand particles are squeezed and crushed, and are screened and discharged through the baffle of the screening cylinder (18). The discharged particles meet the requirements of the production process, and the larger particles continue to be crushed inside the screening and crushing frame (15).

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