Molding sand recovery equipment for automobile flange casting

Abstract

The invention relates to the technical field of intelligent casting, in particular to molding sand recovery equipment for automobile flange casting, which comprises a recovery device, a conveying belt and an elevator, the recovery device comprises a crushing assembly and a regeneration assembly, the regeneration assembly comprises a cleaning box, a rotating shaft fixedly installed on an output shaft of the motor, a spiral blade fixedly installed on the rotating shaft and a blocking piece for blocking molding sand in the cleaning process. According to the molding sand cleaning device, a motor is started to drive a spiral blade to rotate through a rotating shaft to convey molding sand to one end, and the molding sand rubs mutually in the conveying process and is kept clean in the cleaning box; and in the cleaning process of the molding sand, water liquid needs to be continuously conveyed into the cleaning box, the adhesive and part of dust in the molding sand are discharged along with the water liquid, and molding sand particles are large in size and weight, deposit at the bottom of the water liquid and cannot be discharged along with the water liquid, so that cleaning of the adhesive and the dust is achieved, and the molding sand recycling work is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent casting, and particularly relates to a molding sand recycling device for automobile flange casting. Background Art

[0002] Through digital twin modeling and multi-sensor fusion, intelligent casting technology realizes the real-time optimization of casting processes. Taking the casting of automobile aluminum alloy flanges as an example, due to its thin-wall structure and high surface finish requirements (Ra ≤ 6.3 μm), it is necessary to precisely control the compaction degree of molding sand (fluctuation range ±3%) and the permeability of sand molds (>80 cm³ / min). The traditional sand mold preparation mode driven by manual experience is difficult to meet the requirements, and through intelligent casting technology, the shrinkage porosity and cold lap defects of flange castings can be significantly reduced.

[0003] As a basic process in the equipment manufacturing industry, the amount of molding sand used in the production process of casting accounts for about 8 - 10 times the total mass of castings. If directly discarded, it will not only increase costs but also increase environmental pollution.

[0004] The application with the application number CN202411266792.7 relates to the technical field of molding sand recycling and processing, and specifically discloses a casting molding sand recycling system, including a cylinder body and two rolling rollers. A material distribution mechanism is arranged inside the cylinder body, and the material distribution mechanism is divided into two groups. Each group of material distribution mechanisms includes a screening component and a separation component. The screening component includes a sieve plate arranged inside the cylinder body, and the sieve plate gradually slopes downward along the rotation direction of the rolling roller. The separation component includes two arc plates and a guiding structure arranged inside the cylinder body, and a crushing channel is formed between the two arc plates; this application screens the molding sand through the sieve plate, and separates the agglomerated molding sand and small-particle-size molding sand after screening through the separation component, enabling the rolling roller to specifically crush the agglomerated molding sand, avoiding the phenomenon that the agglomerated molding sand slides during crushing due to the fluidity of the fine molding sand. In addition, the sieve plate can send the agglomerated molding sand between the rolling roller and the side wall of the cylinder body into the rotation path of the rolling roller to ensure the crushing effect on the molding sand.

[0005] However, this patent cannot remove the binder on the surface of the used molding sand, and the recycling effect of the molding sand is poor.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Invention

[0007] The purpose of the present invention is to provide a molding sand recycling device for automobile flange casting that can effectively solve the above technical problems.

[0008] To achieve the purpose of the present invention, the following technical solutions are adopted: A molding sand recycling device for automobile flange casting, including: a recycling device, a conveyor belt, and a hoist; The recycling device includes: a crushing component and a regeneration component; The regeneration component includes: a cleaning tank, a motor fixedly installed on the cleaning tank, a rotating shaft fixedly installed on the output shaft of the motor, a spiral blade fixedly installed on the rotating shaft, and a blocking member for blocking the molding sand during the cleaning process.

[0009] Furthermore, the blocking member is composed of: a fixed plate fixedly installed on the cleaning tank, a long slot opened on the fixed plate, and a sliding plate for blocking the molding sand.

[0010] Furthermore, a second spring is fixedly installed in the long slot, a slider is slidably installed on the long slot, a push block is slidably installed on the sliding plate, a reset member is fixedly installed on the push block, a chamfer is opened on one side of the push block, and the second spring is fixedly connected to the slider.

[0011] Furthermore, the reset member is fixedly connected to the sliding plate, and the slider is fixedly connected to the sliding plate.

[0012] Furthermore, the crushing component is composed of: a crushing bin, a screening bin fixedly installed on the crushing bin, and a feeding bin fixedly installed on the screening bin.

[0013] Furthermore, the crushing bin, the screening bin, and the feeding bin are arranged in sequence along the moving direction of the molding sand; the feeding end of the conveyor belt is butted against the discharging end of the recycling device; the feeding port of the elevator is connected to the discharging end of the conveyor belt.

[0014] Furthermore, a power source is fixedly installed on the crushing bin, a transmission shaft is fixedly installed on the output end of the power source, a connecting rod is fixedly installed on the transmission shaft, a rolling roller is rotatably installed on the connecting rod, a feeding plate is also fixedly installed on the rotating shaft, and a discharging port is provided on the screening bin.

[0015] Furthermore, an airbag is fixedly installed on the screening bin, a first spring is fixedly installed on the airbag, a connecting plate is fixedly installed on the airbag, an elastic member is fixedly installed on the connecting plate, and a screen mesh is fixedly installed on the elastic member.

[0016] Furthermore, a cylinder is fixedly installed on the feeding bin, the output end of the cylinder is rotatably connected to a discharging plate, and the discharging plate is rotatably installed on the feeding bin.

[0017] Compared with the prior art, the present invention has the following beneficial effects: An equipment for recycling molding sand used in automobile flange casting. The molding sand enters the cleaning tank. The motor is turned on, and the spiral blade is driven by the rotating shaft to rotate, conveying the molding sand to one end. During the conveying process, the molding sands rub against each other. Under the action of the blocking member, the molding sand cannot be discharged outwards and always remains clean in the cleaning tank. And during the cleaning process of the molding sand, water liquid needs to be continuously conveyed into the cleaning tank. The binder and dust in part of the molding sand are discharged with the water liquid, while the molding sand particles are large in volume and heavy in weight, deposited at the bottom of the water liquid and will not be discharged with the water liquid, thereby realizing the cleaning of the binder and dust and realizing the recycling work of the molding sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0019] Figure 1 It is a schematic diagram of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 2 It is the front view of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 3 It is a schematic diagram of the regeneration component of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 4 It is a schematic diagram of the crushing component of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 5 It is about an equipment for recycling molding sand used in automobile flange casting according to the present invention Figure 4 The enlarged schematic diagram at A in Figure 6 It is a schematic diagram of the recycling liquid tank of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 7 It is a schematic diagram of the blocking member of an equipment for recycling molding sand used in automobile flange casting according to the present invention; Figure 8 It is a two-dimensional schematic diagram of the blocking member of an equipment for recycling molding sand used in automobile flange casting according to the present invention.

[0020] In the figure: 1. Recycling device; 11. Crushing assembly; 111. Crushing bin; 1111. Transmission shaft; 1112. Crushing roller; 1113. Feeding plate; 112. Screening bin; 1121. Bladder; 1122. First spring; 1123. Connecting plate; 1124. Elastic member; 1125. Screen; 1126. Sprayer; 113. Discharge bin; 1131. Cylinder; 1132. Discharge plate; 12. Recycling component; 121. Motor; 122. Rotating shaft; 123. Spiral blade; 124. Blocking member; 1241. Fixed plate; 1242. Long slot; 1243. Second spring; 12431. Slide plate; 12432. Slide block; 12433. Pushing block; 12434. Reset member; 12435. Chamfer; 125. Recycling liquid tank; 126. Cleaning tank; 2. Conveyor belt; 3. Elevator. Detailed implementation manner

[0021] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some but not all of the embodiments of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0023] Such as Figures 1 to 8As shown, the present invention is a molding sand recovery device for automobile flange casting, comprising: a recovery device 1, a conveyor belt 2, and an elevator 3, wherein the feed end of the conveyor belt 2 is docked with the discharge end of the recovery device 1, and is used to receive the material output by the recovery device 1; the feed port of the elevator 3 is connected with the discharge end of the conveyor belt 2, and is used to vertically lift the material to the next process; the agglomerated old molding sand is conveyed to the recovery device 1 by a bucket elevator, and the large sand lumps or dead sand are crushed by the recovery device 1, and the invalid binder on the surface thereof is cleaned; the conveyor belt 2: conveys the molding sand processed by the recovery device 1, and connects various production links; the elevator 3: conveys the molding sand sent out by the conveyor belt 2 to a high-level sand bin for subsequent processing (the subsequent processing includes: a sand mixing step of adding new sand to the old sand, and a tempering step of adding binder to the molding sand, etc.), so as to realize the recycling and reuse of the old molding sand and reduce costs.

[0024] The recycling device 1 comprises: a crushing component 11 for crushing the sand mass for subsequent processing; a regeneration component 12 for cleaning the adhesive on the surface of the crushed sand mass; The crushing assembly 11 is composed of a crushing bin 111, a screening bin 112 fixedly mounted on the crushing bin 111, and a material discharge bin 113 fixedly mounted on the screening bin 112; the crushing bin 111, the screening bin 112, and the material discharge bin 113 are sequentially arranged along the moving direction of the molding sand.

[0025] The crushing bin 111 is fixedly mounted with a power source, the output end of the power source is fixedly mounted with a transmission shaft 1111, the transmission shaft 1111 is fixedly mounted with a connecting rod, a crushing roller 1112 is rotatably mounted on the connecting rod, a material removing plate 1113 is also fixedly mounted on the rotating shaft 122, and a material discharge port is provided on the screening bin 112, which can adopt a flap-type automatic material discharge port, a slide plate-type pneumatic material discharge port, or a butterfly valve-type electric material discharge port, which can meet the requirement of discharge of the molding sand in the crushing bin 111 into the screening bin 112 after crushing, and will not be elaborated here.

[0026] The molding sand is transported to the inside of the screening bin 112 by a bucket elevator, and then the power source is started to drive the transmission shaft 1111 to rotate, so that the transmission shaft 1111 rotates and drives the rolling roller 1112 to roll through the connecting rod to crush the sand mass. The rolling roller 1112 is composed of a heavy metal wheel (cast iron or steel). The sand mass is crushed into fine particles through the rotating rolling and shearing action of the rolling roller 1112, and the fluidity and looseness of the molding sand are restored. When the rolling roller 1112 rotates, the material shifting plate 1113 rotates synchronously to shift the molding sand outside the rolling range of the rolling roller 1112 to the rolling range of the rolling roller 1112, thereby improving the rolling effect of the molding sand.

[0027] However, the small sand agglomerates cannot be completely crushed by the rolling roller 1112. Therefore, in this application, a screening bin 112 is provided to screen the crushed molding sand to ensure the treatment effect of the molding sand.

[0028] A bladder 1121 is fixedly installed on the screening bin 112. A first spring 1122 is fixedly installed on the bladder 1121. A connecting plate 1123 is fixedly installed on the bladder 1121. An elastic member 1124 is fixedly installed on the connecting plate 1123. A screen 1125 is fixedly installed on the elastic member 1124. When the water liquid injected into the bladder 1121 expands, it drives the deformation of the first spring 1122. After the water liquid in the bladder 1121 is discharged, the first spring 1122 drives the bladder 1121 to reset.

[0029] Regarding the above, it should be noted that the size of the screen 1125 needs to meet the requirement that when the molding sand is fed through the feeding port and screened on the surface of the screen 1125, it cannot fall from the edge of the screen 1125. And multiple groups of elastic members 1124 are symmetrically arranged with the center line of the screen 1125 as the axis, which is used to improve the connection stability between the screen 1125 and the connecting plate 1123. At the same time, when the connecting plate 1123 moves, it can drive the screen 1125 to shake through the elastic member 1124, so that the screen 1125 screens the molding sand.

[0030] To expand, two groups of connecting plates 1123 are symmetrically arranged on the bladder 1121, and two groups of screens 1125 are synchronously arranged. The mesh numbers of the two groups of screens 1125 are different (the mesh number of the upper group of screens 1125 is less than that of the lower group of screens 1125). When screening the molding sand, it can improve the screening accuracy of the molding sand.

[0031] Specifically, the bladder 1121 is respectively connected to a spray head 1126 and a water pump through pipelines. An electromagnetic valve is provided at the connection between the pipeline and the spray head 1126 to control the flow path cut-off. The water pump pumps water liquid into the bladder 1121 through a water pipe. When the bladder 1121 expands, the upper and lower screens 1125 are separated. Due to the soft connection of the elastic member 1124, the screen 1125 shakes, and the shaking screen 1125 will cause the molding sand to move relatively, which is beneficial to the screen 1125 to screen the molding sand.

[0032] In detail, after the bladder 1121 expands under the influence of water liquid, the supply of water liquid to the bladder 1121 is stopped. At the same time, the electromagnetic valve is opened. Under the reset action of the bladder 1121 and the first spring 1122, the water liquid in the bladder 1121 is sent into the spray head 1126 through the pipeline and sprayed onto the screen 1125 through the spray head 1126 to clean the screen 1125. At the same time, the small sand agglomerates that cannot be filtered on the screen 1125 are softened by spraying water, and combined with the vibration of the screen 1125, secondary crushing of the sand agglomerates is realized, improving the treatment effect of the molding sand.

[0033] It should be noted that in the present application, the water pump and the solenoid valve are controlled by the PLC controller to work periodically to achieve better screening of the molding sand. For example, the water pump delivers water into the capsule 1121. When the solenoid valve is closed, the water accumulates in the capsule 1121. At the same time, the capsule 1121 expands and drives the screen 1125 to screen the molding sand. When the solenoid valve is opened and the water flows out, the capsule 1121 and the screen 1125 are reset to form vibrating screening and expand the vibration effect of the screen 1125 through the elastic member 1124. The elastic member 1124 is preferably a pull rope.

[0034] In general, the screening of the molding sand is achieved by controlling the switch of the solenoid valve. In addition, the movement amplitude of the screen 1125 can be controlled by controlling the time interval of opening and closing the solenoid valve. In this application, the switching interval of the solenoid valve is 10 seconds under normal conditions, and the switching interval is 15 seconds when the amplitude is increased. In actual use, it runs for 2 hours under normal conditions, and the switching interval of the solenoid valve is 15 minutes, thereby forming a greater vibration effect and improving the cleaning efficiency, thereby realizing intelligence, automatically cleaning the surface of the screen 1125, and softening small sand clumps, assisting in the secondary crushing of small sand clumps, and having a good use effect.

[0035] Specifically, the switching time and the switching time of the solenoid valve can be switched according to the actual production of the factory. In addition, the connection between the solenoid valve and the PLC controller, the switching time and the switching time of the solenoid valve are all existing technologies and will not be elaborated here.

[0036] A cylinder 1131 is fixedly installed on the unloading bin 113, and a unloading plate 1132 is rotatably connected to the output end of the cylinder 1131. The unloading plate 1132 is rotatably installed on the unloading bin 113. The molding sand screened by the screen 1125 enters the unloading bin 113. When the molding sand in the unloading bin 113 needs to be unloaded toward the regeneration component 12, the cylinder 1131 is started to pull the unloading plate 1132 to rotate and open. At this time, the molding sand in the unloading bin 113 falls outward, thereby realizing the unloading work after the sand mass is broken.

[0037] The recycling and reuse effect cannot be achieved by simply crushing the old molding sand. The failed adhesive on the surface of the molding sand needs to be removed. The present application achieves this goal by setting a regeneration component 12. The regeneration component 12 includes: a motor 121, a rotating shaft 122 fixedly mounted on the output shaft of the motor 121, a spiral blade 123 fixedly mounted on the rotating shaft 122, and a blocking member 124 for blocking the molding sand during the cleaning process; the regeneration component 12 is arranged at an angle.

[0038] The cleaning box 126 is fixedly installed in the discharging direction of the blanking bin 113. The motor 121 is installed on the cleaning box 126. The cleaning box 126 is connected to a water source (the water body is transported into the interior of the cleaning box 126 through a water pump, and this technology is an existing technology). The molding sand enters the cleaning box 126. The motor 121 is turned on, and the spiral blade 123 is driven to rotate by the rotating shaft 122 to convey the molding sand to one end. During the conveying process, the molding sands rub against each other. Finally, under the action of the blocking member 124, the molding sand cannot be discharged outward and always remains clean in the cleaning box 126. It should be noted that during the cleaning process of the molding sand, water liquid needs to be continuously conveyed into the cleaning box 126. The binder and part of the dust in the molding sand are discharged with the water liquid, while the molding sand particles are large in volume and heavy in weight and deposit at the bottom of the water liquid and will not be discharged with the water liquid, thereby realizing the cleaning of the binder and dust and realizing the recycling work of the molding sand.

[0039] What needs to be supplemented for the above is that there are two sets of the motor 121, the rotating shaft 122, and the spiral blade 123. During use, the spiral blade 123 can be controlled to rotate in the reverse direction to increase the movement of the molding sand and improve the cleaning effect on the molding sand.

[0040] The blocking member 124 is composed of: a fixing plate 1241 fixedly installed on the cleaning box 126, a long groove 1242 opened on the fixing plate 1241, and a sliding plate 12431 for blocking the molding sand. When the above-mentioned blanking plate 1132 is opened to discharge the molding sand, the blanking plate 1132 pushes the sliding plate 12431 to slide, thereby realizing the blocking of the molding sand. When the blanking plate 1132 is reset, the sliding plate 12431 is reset. At this time, the spiral blade 123 rotates synchronously to push the molding sand to be discharged in the direction of the conveyor belt 2.

[0041] Specifically, a second spring 1243 is fixedly installed in the long groove 1242. A slider 12432 is slidably installed on the long groove 1242. The slider 12432 is fixedly connected to the sliding plate 12431. A push block 12433 is slidably installed on the sliding plate 12431. A reset member 12434 is fixedly installed on the push block 12433. A chamfer 12435 is opened on one side of the push block 12433. The second spring 1243 is fixedly connected to the slider 12432; one side of the sliding plate 12431 is attached to one side of the fixing plate 1241.

[0042] When the blanking plate 1132 rotates and opens, it pushes the slide plate 12431 to slide in the long groove 1242 through the slider 12432 (while deforming the second spring 1243), causing the slide plate 12431 to move downward to block the molding sand. At this time, the push block 12433 is reset under the action of the reset member 12434 and protrudes from the slide plate 12431. When the spiral blade 123 rotates, it squeezes the push block 12433 through the chamfer 12435 (while deforming the reset member 12434), causing the push block 12433 to perform a linear reciprocating motion along the axis of the spiral blade 123, pushing the molding sand to move towards the motor 121 direction to prevent the accumulation of molding sand at the end of the spiral blade 123; when the spiral blade 123 is not in contact with the push block 12433, the reset member 12434 drives the push block 12433 to reset. When the blanking plate 1132 is not in contact with the slider 12432, the second spring 1243 drives the slider 12432 to reset. The reset member 12434 is preferably a spring.

[0043] Finally, a drain valve is fixedly installed on the cleaning tank 126, and a recovery liquid tank 125 is fixedly installed on the cleaning tank 126. When the molding sand is discharged under the action of the spiral blade 123, the water injection into the cleaning tank 126 is stopped, and the drain valve is opened to make the water liquid in the cleaning tank 126 enter the recovery liquid tank 125. At this time, since the cleaning and regeneration of the molding sand have been completed, and some impurities in the water liquid are discharged outward, the water liquid remaining in the cleaning tank 126 is relatively clean. Therefore, the remaining water liquid is pumped through the water pipe by the above-mentioned water pump and sent into the bladder 1121 to realize the reuse of the remaining water liquid, reducing costs and increasing efficiency.

[0044] Generally speaking, when the blanking plate 1132 rotates and opens in this application, on the one hand, it drives the slide plate 12431 to block the molding sand, and at the same time drives the push block 12433 to move, so that when the spiral blade 123 rotates, it squeezes the push block 12433 through the chamfer 12435, causing the push block 12433 to perform a linear reciprocating motion and pushing the molding sand to move towards the motor 121 direction to prevent the molding sand from accumulating at one end of the spiral blade 123 and affecting the cleaning effect of the molding sand. On the other hand, when the blanking plate 1132 resets, the slider 12432 resets, which is convenient for discharging the molding sand. At the same time, the chamfer 12435 drives the push block 12433 to reset, which is convenient for subsequent use.

[0045] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0046] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A sand recycling device for automobile flange casting, characterized in that, include: A recovery device (1), a conveyor belt (2), and an elevator (3); The recycling device (1) comprises: a crushing component (11) and a regeneration component (12); The regeneration component (12) comprises: a cleaning box (126), a motor (121) fixedly mounted on the cleaning box (126), a rotating shaft (122) fixedly mounted on the output shaft of the motor (121), a spiral blade (123) fixedly mounted on the rotating shaft (122), and a blocking member (124) for blocking molding sand during the cleaning process.

2. The sand recycling equipment for automobile flange casting according to claim 1, characterized in that The blocking member (124) is composed of a fixing plate (1241) fixedly mounted on the cleaning box (126), a long groove (1242) opened on the fixing plate (1241), and a sliding plate (12431) for blocking molding sand.

3. The sand recycling equipment for automobile flange casting according to claim 2, characterized in that, A second spring (1243) is fixedly installed in the long groove (1242), a sliding block (12432) is slidably installed on the long groove (1242), a pushing block (12433) is slidably installed on the sliding block (12431), a reset member (12434) is fixedly installed on the pushing block (12433), a chamfer (12435) is provided on one side of the pushing block (12433), and the second spring (1243) is fixedly connected to the sliding block (12432).

4. The sand recycling equipment for automobile flange casting according to claim 3, characterized in that, The reset member (12434) is fixedly connected to the slide plate (12431), and the sliding block (12432) is fixedly connected to the slide plate (12431).

5. The sand recycling equipment for automobile flange casting according to claim 1, characterized in that, The crushing assembly (11) is composed of a crushing bin (111), a screening bin (112) fixedly mounted on the crushing bin (111), and a material discharge bin (113) fixedly mounted on the screening bin (112).

6. The sand recycling equipment for automobile flange casting according to claim 5, characterized in that, The crushing bin (111), the screening bin (112), and the unloading bin (113) are arranged in sequence along the moving direction of the molding sand; the feeding end of the conveyor belt (2) is connected to the discharging end of the recovery device (1); and the feeding port of the elevator (3) is connected to the discharging end of the conveyor belt (2).

7. The sand recycling equipment for automobile flange casting according to claim 5, characterized in that, A power source is fixedly mounted on the crushing bin (111), a transmission shaft (1111) is fixedly mounted on the output end of the power source, a connecting rod is fixedly mounted on the transmission shaft (1111), a crushing roller (1112) is rotatably mounted on the connecting rod, a material stripping plate (1113) is also fixedly mounted on the rotating shaft (122), and a material discharge port is provided on the screening bin (112).

8. The sand recycling equipment for automobile flange casting according to claim 5, characterized in that, A capsule (1121) is fixedly mounted on the screening bin (112), a spring (1122) is fixedly mounted on the capsule (1121), a connecting plate (1123) is fixedly mounted on the capsule (1121), an elastic member (1124) is fixedly mounted on the connecting plate (1123), and a screen (1125) is fixedly mounted on the elastic member (1124).

9. The sand recycling equipment for automobile flange casting according to claim 5, characterized in that, A cylinder (1131) is fixedly mounted on the material discharge bin (113); an output end of the cylinder (1131) is rotatably connected to a material discharge plate (1132); and the material discharge plate (1132) is rotatably mounted on the material discharge bin (113).

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