Environment-friendly foundry waste sand regeneration treatment device and use method thereof

Abstract

The invention relates to the technical field of foundry waste sand regeneration treatment, in particular to an environment-friendly foundry waste sand regeneration treatment device and a using method thereof. A supporting frame is arranged in the middle of a supporting plate, and the supporting frame is sequentially provided with a first sieve plate, a second sieve plate and a third sieve plate from top to bottom; the first sieve plate, the second sieve plate and the third sieve plate are connected to the supporting frame through a vibration mechanism, symmetrical lifting columns are arranged on one side of the supporting plate, a conveying mechanism is arranged at the free ends of the lifting columns, a conveying box is arranged on the conveying mechanism, and a first crushing box, a second crushing box and a third crushing box are sequentially arranged on the other side of the supporting plate. During use, casting waste sand is sieved step by step through the first sieve plate, the second sieve plate and the third sieve plate, unqualified casting waste sand is crushed step by step through the first crushing box body, the second crushing box body and the third crushing box body and then is sieved through the conveying box body, and the casting waste sand with the qualified size is obtained. And large casting waste sand can be conveniently treated, and the using effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly foundry waste sand regeneration treatment, in particular to an environmentally friendly foundry waste sand regeneration treatment device and a use method thereof. Background Art

[0002] With the rapid development of automobile industry and machinery manufacturing industry, my country has become a major casting production and raw material consumption country in the world. A large amount of industrial sand not only reduces the sand source, but also affects and damages the ecological environment to varying degrees. The main solid waste in casting production is waste sand, most of which is discharged as waste sand, which not only wastes resources and increases the production cost of castings, but also seriously pollutes the environment. The key to the treatment of foundry waste sand lies in the crushing and filtering of large blocks. The foundry waste sand reprocessing structure in the existing technology has poor performance. Therefore, how to overcome the above-mentioned technical problems and defects has become a key problem that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects described in the background technology, so as to realize an environmentally friendly foundry waste sand regeneration treatment device and a method of using the same which is convenient for treating large pieces of foundry waste sand and has good use effect.

[0004] To achieve the above-mentioned purpose of the invention, the technical solution of the present invention is: an environmentally friendly foundry waste sand regeneration and processing device, comprising a support plate, a support frame is arranged in the middle of the support plate, and a first screen plate, a second screen plate and a third screen plate are arranged on the support frame from top to bottom in sequence, and the first screen plate, the second screen plate and the third screen plate are connected to the support frame through a vibration mechanism, a symmetrical lifting column is arranged on one side of the support plate, a conveying mechanism is arranged at the free end of the lifting column, and a conveying box is arranged on the conveying mechanism, a first crushing box, a second crushing box and a third crushing box are arranged in sequence on the other side of the support plate, and a material guide assembly is arranged at the support plate at the lower part of the third screen plate and the third crushing box.

[0005] Furthermore, support legs are installed at the four corners of the lower part of the support plate, and moving wheels are installed at the lower part of the support legs. The movable wheels are provided to facilitate the movement of the entire device.

[0006] Furthermore, the mesh holes of the first sieve plate, the second sieve plate and the third sieve plate gradually become smaller, the bottoms of the first sieve plate, the second sieve plate and the third sieve plate are all arranged to be inclined toward the middle, and a screening discharge port is arranged in the middle. The first sieve plate, the second sieve plate and the third sieve plate can screen the foundry waste sand step by step, and the foundry waste sand remaining on the upper part of the sieve is taken out through the screening discharge port.

[0007] Furthermore, the vibration mechanism includes connecting rods fixed on both sides of the first sieve plate, the second sieve plate and the third sieve plate, the ends of the connecting rods are connected to the mounting blocks, the mounting blocks are located in the through slots of the support frame and are connected to the bottom of the through slots, the upper part is connected to the top of the through slots through a limit spring, and is rotatably connected to a transmission gear on the outside of the mounting block, the transmission gear is transmitted through an irregular cam meshing, the irregular cam is driven by a vibration transmission motor, driving the irregular cam to rotate, thereby driving the transmission gear to rotate, the mounting block moves upward under the action of the irregular cam, and returns to its original position under the action of the limit spring, thereby driving the vibration of the first sieve plate, the second sieve plate and the third sieve plate, thereby increasing the screening efficiency.

[0008] Furthermore, the lifting column is provided with at least one electric or hydraulic drive, so as to realize the rising and falling of the entire conveying mechanism, and drive the conveying box to reach a designated position in the vertical direction.

[0009] Furthermore, the conveying mechanism includes a U-shaped plate connected to the free ends of two lifting columns, the length of the U-shaped plate corresponds to the lateral length of the support plate, a bidirectional lead screw is rotatably connected to one of the U-shaped plates, a guide rod is installed on the other U-shaped plate, and a group of transmission sleeves are sleeved on the bidirectional lead screw, and a group of guide sleeves are sleeved on the guide rod. The conveying box is fixed between the transmission sleeves and the guide sleeves, and a conveying port is opened at the bottom of the conveying box. By starting the conveying transmission motor, the conveying box is driven to move to a specified position on the same horizontal plane.

[0010] Furthermore, the upper and lower parts of the first crushing box, the second crushing box and the third crushing box are respectively provided with a feed port and a crushing discharge port, and a conical hopper is provided at the feed port. A transmission shaft is rotatably connected inside the first crushing box, the second crushing box and the third crushing box, the transmission shaft is driven by a crushing transmission motor, and crushing knives are arranged on the transmission shaft. The spacing between the crushing knives in the first crushing box, the second crushing box and the third crushing box gradually decreases, and a mesh hole is provided in the bottom cylinder of the third crushing box, and the material directly leads to the material guide assembly, and the crushing transmission motor is started to drive the crushing knife to crush the waste casting sand, and the waste casting sand is gradually crushed to reach a qualified size of waste casting sand.

[0011] Furthermore, the material guide assembly includes a material guide support plate, and a material guide conveyor is installed on the material guide support plate. The material guide conveyor is driven by a material guide transmission motor, and a material guide plate is arranged on the unloading end of the material guide conveyor. A material trough is provided on the support plate on the upper part of the material guide conveyor. The screening unloading port of the third screen plate falls onto the material guide conveyor through the material trough, and the material passing through the mesh falls onto the material guide conveyor and the material guide plate. The qualified casting waste sand that has been screened and crushed falls onto the material guide conveyor and the material guide plate and is transported to the designated location.

[0012] The method for using the environmentally friendly foundry waste sand regeneration and processing device of the present invention is as follows: when in use, first, the foundry waste sand is sent to the first sieve plate, and is screened step by step through the first sieve plate, the second sieve plate and the third sieve plate. The foundry waste sand that has passed the third sieve plate is foundry waste sand of a qualified size and is transmitted to the next process through a material guide conveyor belt; the transmission box is moved to a suitable height by starting the lifting column, and the transmission transmission motor is started to drive the transmission box to move to the lower part of the first sieve plate, corresponding to its screening discharge port, and the screening discharge port is opened, and the foundry waste sand remaining on the first sieve plate falls into the transmission box, and the transmission box continues to move forward to the upper part of the first crushing box, and the transmission port corresponds to the feed port, and the transmission port is opened to transfer the foundry waste sand to the next process. The sand is conveyed to the first crushing box; after starting the crushing transmission motor, the crushing knife is driven to rotate to crush the waste foundry sand. After the crushing is completed, the conveying box is moved to the lower part of the first crushing box according to the above steps, and the waste foundry sand falls from the crushing discharge port to the conveying box. The conveying box conveys the crushed waste foundry sand to the second screen plate. The waste foundry sand remaining on the second screen plate is crushed by the second crushing box, and then screened by the third screen plate. The waste foundry sand remaining on the third screen plate is crushed by the third crushing box. The crushed waste foundry sand passes through the mesh of the third crushing box. The size of the mesh is the same as that of the third screen plate. The waste foundry sand passing through the mesh and the third screen plate is of qualified size.

[0013] When the first, second and third sieve plates are screening, the vibration transmission motor is started to drive the irregular cam to rotate, thereby driving the transmission gear to rotate. The mounting block moves upward under the action of the irregular cam, and returns to its original position under the action of the limit spring, thereby driving the vibration of the first, second and third sieve plates to increase the screening efficiency.

[0014] Beneficial effects of the environmentally friendly foundry waste sand regeneration treatment device and the use method thereof of the present invention:

[0015] 1. The environmentally friendly foundry waste sand regeneration and processing device of the present invention and the use method thereof, the first sieve plate, the second sieve plate and the third sieve plate screen the foundry waste sand step by step, the first crushing box, the second crushing box and the third crushing box crush the unqualified foundry waste sand step by step, and then screen it again through the conveying box, so as to obtain foundry waste sand of qualified size, which is convenient for processing large pieces of foundry waste sand and then conducting subsequent reprocessing.

[0016] 2. The environmentally friendly foundry waste sand regeneration and processing device of the present invention and the use method thereof, when the first sieve plate, the second sieve plate and the third sieve plate are screening, the vibration transmission motor is started to drive the irregular cam to rotate, thereby driving the transmission gear to rotate, and the mounting block moves upward under the action of the irregular cam, and returns to its original position under the action of the limit spring, thereby driving the vibration of the first sieve plate, the second sieve plate and the third sieve plate, thereby increasing the screening efficiency and achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the environmentally friendly foundry waste sand regeneration and processing device of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the structure of the environmentally friendly foundry waste sand regeneration and processing device of the present invention;

[0019] Figure 3 It is a schematic diagram of the connection structure of the irregular cam and the transmission gear of the environmentally friendly foundry waste sand regeneration and processing device of the present invention;

[0020] Figure 4 It is a structural schematic diagram of a material guide component of an environmentally friendly foundry waste sand regeneration and processing device of the present invention.

[0021] In the figure: 1-support plate, 11-feeding trough, 21-support leg, 22-moving wheel, 3-lifting column, 4-support frame, 51-first screen plate, 52-second screen plate, 53-third screen plate, 54-screening discharge port,

[0022] Vibration mechanism: 61-vibration transmission motor, 62-irregular cam, 63-transmission gear, 64-limit spring, 65-mounting block, 66-connecting rod;

[0023] 7-transmission box, 71-transmission port;

[0024] Transmission mechanism: 81-bidirectional lead screw, 82-transmission sleeve, 83-transmission transmission motor, 84-guide sleeve, 85-guide rod, 86-U-shaped plate, 87-connecting rod;

[0025] 91-first crushing box, 92-second crushing box, 93-third crushing box, 931-mesh, 911-feeding port, 912-conical hopper, 913-crushing discharge port, 914-crushing transmission motor, 915-transmission shaft, 916-crushing knife;

[0026] Material guide assembly: 101-material guide support plate, 102-material guide conveyor belt, 103-material guide transmission motor, 104-material guide plate. DETAILED DESCRIPTION

[0027] The following is a more detailed description of the environmentally friendly foundry waste sand regeneration and treatment device and the use method of the present invention in conjunction with the accompanying drawings and through specific implementation methods.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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 therefore cannot be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 4 The environmentally friendly foundry waste sand regeneration and treatment device and the use method of the present embodiment can process large blocks of foundry waste sand and have good use effect. The structure of the present embodiment includes a support plate 1, a support frame 4 is arranged in the middle of the support plate 1, support legs 21 are installed at the four corners of the lower part of the support plate 1, and moving wheels 22 are installed at the lower part of the support legs 21. The set moving wheels 22 facilitate the movement of the entire device. The first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 are arranged on the support frame 4 from top to bottom. The mesh 931 of the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 gradually becomes smaller. The bottom of the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 are all arranged to be inclined toward the middle. A screening discharge port 54 is arranged in the middle. The first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 can screen the foundry waste sand step by step, and the foundry waste sand left on the upper part of the sieve is taken out through the screening discharge port 54. The first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 are connected to the support frame 4 through a vibration mechanism, and the vibration mechanism includes a connecting rod 66 fixed on both sides of the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53, and the end of the connecting rod 66 is connected to the mounting block 65. The mounting block 65 is located in the through groove of the support frame 4 and is connected to the bottom of the through groove. The upper part is connected to the top of the through groove through a limit spring 64, and is rotatably connected to the outside of the mounting block 65 with a transmission gear 63. The transmission gear 63 is meshed and transmitted by an irregular cam 62. The irregular cam 62 is driven by a vibration transmission motor 61 to drive the irregular cam 62 to rotate, thereby driving the transmission gear 63 to rotate. Under the action of the irregular cam 62, the mounting block 65 moves upward, and under the action of the limit spring 64, returns to its original position, thereby driving the vibration of the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 to increase the screening efficiency.

[0030] See also Figure 1 and Figure 2In this embodiment, a symmetrical lifting column 3 is arranged on one side of the support plate 1, and a transmission mechanism is arranged at the free end of the lifting column 3, and a transmission box 7 is arranged on the transmission mechanism. The lifting column 3 is provided with at least one electric or hydraulic drive, so as to realize the rise and fall of the entire transmission mechanism, and drive the transmission box 7 to reach the designated position in the vertical direction. The transmission mechanism includes a U-shaped plate 86 connected to the free ends of two lifting columns 3, and the ends of the two U-shaped rods 86 are fixed together by a connecting rod 87. The length of the U-shaped plate 86 corresponds to the horizontal length of the support plate 1. A bidirectional lead screw 81 is rotatably connected to one of the U-shaped plates 86, and a guide rod 85 is installed on the other U-shaped plate 86. A group of transmission sleeves 82 are sleeved on the bidirectional lead screw 81, and a group of guide sleeves 84 are sleeved on the guide rod 85. The transmission box 7 is fixed between the transmission sleeve 82 and the guide sleeve 84. A transmission port 71 is opened at the bottom of the transmission box 7. By starting the transmission transmission motor 83, the transmission box 7 is driven to move to the designated position of the same horizontal plane.

[0031] See also Figure 1 and Figure 2 In this embodiment, the other side of the support plate 1 is provided with a first crushing box 91, a second crushing box 92 and a third crushing box 93 in sequence, wherein the upper and lower parts of the first crushing box 91, the second crushing box 92 and the third crushing box 93 are provided with a feed port 911 and a crushing discharge port 913 respectively, and a conical hopper 912 is provided at the feed port 911, and a transmission shaft 915 is rotatably connected inside the first crushing box 91, the second crushing box 92 and the third crushing box 93. 915 is driven by a crushing transmission motor 914, and crushing knives 916 are arranged on the transmission shaft 915. The spacing between the crushing knives 916 in the first crushing box 91, the second crushing box 92 and the third crushing box 93 gradually decreases. A mesh hole 931 is opened in the bottom cylinder of the third crushing box 93, and the material directly leads to the material guide component. The crushing transmission motor 914 is started to drive the crushing knives 916 to crush the waste sand, and the waste sand is gradually crushed to reach a qualified size of waste sand.

[0032] See also Figure 1 and Figure 4In this embodiment, a material guide assembly is provided at the support plate 1 at the lower part of the third sieve plate 53 and the third crushing box 93. The material guide assembly includes a material guide support plate 101, and a material guide conveyor belt 102 is installed on the material guide support plate 101. The material guide conveyor belt 102 is driven by a material guide transmission motor 103, and a material guide plate 104 is provided at the unloading end of the material guide conveyor belt 102. A material trough 11 is provided on the support plate 1 at the upper part of the material guide conveyor belt 102. The screening unloading port 54 of the third sieve plate 53 falls onto the material guide conveyor belt 102 through the material trough 11, and the material passing through the mesh 931 falls onto the material guide conveyor belt 102 and the material guide plate 104. The qualified foundry waste sand that has been screened and crushed falls onto the material guide conveyor belt 102 and the material guide plate 104 and is transported to the designated location.

[0033] The method and steps of using the environmentally friendly foundry waste sand regeneration and processing device of this embodiment are as follows: when in use, first, the foundry waste sand is sent to the first sieve plate 51, and is screened step by step through the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53. The foundry waste sand that passes through the third sieve plate 53 is foundry waste sand of qualified size and is transmitted to the next process through the guide conveyor belt 102; by starting the lifting column 3, the transmission box 7 is moved to a suitable height, and by starting the transmission transmission motor 83, the transmission box 7 is driven to move to the lower part of the first sieve plate 51, corresponding to its screening discharge port 54, the screening discharge port 54 is opened, and the foundry waste sand remaining on the first sieve plate 51 falls into the transmission box 7, and the transmission box 7 continues to move forward to the upper part of the first crushing box 91, the transmission port 71 corresponds to the feed port 911, and the transmission port 71 is opened to transmit the foundry waste sand. The waste sand is sent to the first crushing box 91; the crushing transmission motor 914 is started to drive the crushing knife 916 to rotate and the waste sand is crushed. After the crushing is completed, the conveying box 7 is moved to the lower part of the first crushing box 91 according to the above steps, and the waste sand falls from the crushing discharge port 913 to the conveying box 7. The conveying box 7 conveys the crushed waste sand to the second sieve plate 52. The waste sand remaining on the second sieve plate 52 is crushed by the second crushing box 92, and then screened by the third sieve plate 53. The waste sand remaining on the third sieve plate 53 is crushed by the third crushing box 93. The crushed waste sand passes through the mesh 931 of the third crushing box 93. The size of the mesh 931 is the same as that of the third sieve plate 53. The waste sand passing through the mesh 931 and the third sieve plate 53 is of qualified size.

[0034] When the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 of this embodiment are screening, the vibration transmission motor 61 is started to drive the irregular cam 62 to rotate, thereby driving the transmission gear 63 to rotate, and the mounting block 65 moves upward under the action of the irregular cam 62, and returns to its original position under the action of the limit spring 64, thereby driving the vibration of the first sieve plate 51, the second sieve plate 52 and the third sieve plate 53 to increase the screening efficiency.

[0035] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The use of "one" or "an" and other similar words in the application documents of this application does not necessarily indicate a quantitative limitation. "Include" or "comprise" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0036] The exemplary implementation modes of the present invention are described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. An environmentally friendly foundry waste sand regeneration and processing device, characterized in that: It includes a support plate, a support frame is arranged in the middle of the support plate, and a first screen plate, a second screen plate and a third screen plate are arranged on the support frame from top to bottom in sequence, and the first screen plate, the second screen plate and the third screen plate are connected to the support frame through a vibration mechanism, a symmetrical lifting column is arranged on one side of the support plate, a conveying mechanism is arranged at the free end of the lifting column, and a conveying box is arranged on the conveying mechanism, and a first crushing box, a second crushing box and a third crushing box are arranged in sequence on the other side of the support plate, and a material guide assembly is arranged at the support plate at the lower part of the third screen plate and the third crushing box.

2. The environmentally friendly foundry waste sand regeneration and processing device according to claim 1, characterized in that: Support legs are installed at the four corners of the lower part of the support plate, and moving wheels are installed at the lower part of the support legs.

3. The environmentally friendly foundry waste sand regeneration and processing device according to claim 1, characterized in that: The mesh holes of the first sieve plate, the second sieve plate and the third sieve plate gradually become smaller, the bottoms of the first sieve plate, the second sieve plate and the third sieve plate are all arranged to be inclined toward the middle, and a screening discharge port is arranged in the middle.

4. The environmentally friendly foundry waste sand regeneration and processing device according to claim 3 is characterized in that: The vibration mechanism includes connecting rods fixed on both sides of the first sieve plate, the second sieve plate and the third sieve plate. The ends of the connecting rods are connected to the mounting blocks. The mounting blocks are located in the through slots of the support frame and are connected to the bottom of the through slots at the lower part. The upper part is connected to the top of the through slots through a limit spring, and is rotatably connected to a transmission gear outside the mounting block. The transmission gear is driven by an irregular cam meshing, and the irregular cam is driven by a vibration transmission motor.

5. The environmentally friendly foundry waste sand regeneration and processing device according to claim 1, characterized in that: The lifting column is provided with at least one electric or hydraulic drive.

6. The environmentally friendly foundry waste sand regeneration and processing device according to claim 5, characterized in that: The conveying mechanism includes a U-shaped plate connected to the free ends of two lifting columns, the length of the U-shaped plate corresponds to the horizontal length of the support plate, a bidirectional lead screw is rotatably connected to one of the U-shaped plates, a guide rod is installed on the other U-shaped plate, a group of transmission sleeves are sleeved on the bidirectional lead screw, a group of guide sleeves are sleeved on the guide rod, a conveying box is fixed between the transmission sleeve and the guide sleeve, and a conveying port is opened at the bottom of the conveying box.

7. The environmentally friendly foundry waste sand regeneration and processing device according to claim 1, characterized in that: A feed port and a crushing discharge port are respectively arranged at the upper and lower parts of the first crushing box, the second crushing box and the third crushing box, and a conical hopper is arranged at the feed port. A transmission shaft is rotatably connected inside the first crushing box, the second crushing box and the third crushing box, the transmission shaft is driven by a crushing transmission motor, and crushing knives are arranged on the transmission shaft. The spacing between the crushing knives in the first crushing box, the second crushing box and the third crushing box gradually decreases, and a mesh hole is opened in the bottom cylinder of the third crushing box, and the material directly leads to the material guide assembly.

8. The environmentally friendly foundry waste sand regeneration and processing device according to claim 7, characterized in that: The material guide assembly includes a material guide support plate, and a material guide conveyor belt is installed on the material guide support plate. The material guide conveyor belt is driven by a material guide transmission motor, and a material guide plate is arranged on the unloading end of the material guide conveyor belt. A material trough is opened on the support plate on the upper part of the material guide conveyor belt. The screening unloading port of the third screen plate falls onto the material guide conveyor belt through the material trough, and the material passing through the mesh falls onto the material guide conveyor belt and the material guide plate.

9. A method for using an environmentally friendly foundry waste sand regeneration and processing device, characterized in that: When in use, the foundry waste sand is first sent to the first sieve plate, and is screened step by step by the first sieve plate, the second sieve plate and the third sieve plate. The foundry waste sand that passes through the third sieve plate is foundry waste sand of qualified size and is transmitted to the next process through the material guide conveyor belt; by starting the lifting column, the transmission box is moved to a suitable height, and by starting the transmission transmission motor, the transmission box is driven to move to the lower part of the first sieve plate, corresponding to its screening discharge port, the screening discharge port is opened, and the foundry waste sand remaining on the first sieve plate falls into the transmission box, and the transmission box continues to move forward to the upper part of the first crushing box, the transmission port corresponds to the feed port, and the transmission port is opened to transmit the foundry waste sand to the first crushing box; after starting The movable crushing transmission motor drives the crushing knife to rotate and crushes the waste foundry sand. After the crushing is completed, the conveying box is moved to the lower part of the first crushing box according to the above steps, and the waste foundry sand falls from the crushing discharge port to the conveying box. The conveying box conveys the crushed waste foundry sand to the second screen plate. The waste foundry sand remaining on the second screen plate is crushed by the second crushing box, and then screened by the third screen plate. The waste foundry sand remaining on the third screen plate is crushed by the third crushing box. The crushed waste foundry sand passes through the mesh of the third crushing box. The size of the mesh is the same as that of the third screen plate. The waste foundry sand passing through the mesh and the third screen plate is of qualified size.

10. The method for using the environmentally friendly foundry waste sand regeneration and processing device according to claim 9, characterized in that: When the first, second and third sieve plates are screening, the vibration transmission motor is started to drive the irregular cam to rotate, thereby driving the transmission gear to rotate. The mounting block moves upward under the action of the irregular cam, and returns to its original position under the action of the limit spring, thereby driving the vibration of the first, second and third sieve plates to increase the screening efficiency.

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