Sand mold casting and sand mold treatment equipment

Abstract

The invention provides sand mold casting and sand mold treatment equipment which is characterized in that a used sand treatment device is used for carrying out shakeout and magnetic separation on used sand in a sand returning sand box so as to remove impurities and scrap iron in the sand; the used sand storage device stores the treated used sand so as to convey the used sand to the next procedure for sand treatment, the new sand mixing device mixes the used sand and new sand so as to prepare sand suitable for casting, and the casting sand box is switched among different procedures through the pouring conveying device and the cooling conveying device. The cooling conveying device receives the sand returning sand box after the pouring procedure is completed and prepares for the next treatment, the pouring conveying device is responsible for conveying the casting sand box filled with the new sand to a pouring area and providing a necessary sand box for the pouring procedure, the sand box is filled with the new sand by arranging the independent cooling conveying device and pouring conveying device, and the casting sand box is filled with the new sand after the pouring procedure is completed. And the casting process of the casting, the cooling process of the cast casting and the treatment process of the used sand are independently arranged, so that the yield of products is improved, and the productivity is ensured.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and more particularly to a sand casting and sand processing device. Background Art

[0002] Sand casting and sand processing equipment is a processing system for molding sand and core sand configured with clay as a binder used in the casting process. Mold (core) sand is clay sand configured with clay as a binder. Mechanization of the sand processing process is an important part of the foundry sand processing production equipment. The quality of core sand preparation directly affects the quality and output improvement of casting production and the reduction of costs; due to the complex sand processing process, the workload of clay sand processing and transportation is very large. In the metal casting process, sand casting and sand processing equipment are used to realize sand transportation, sand mixing and sand return. Due to the high sand return temperature during the pouring process, the existing sand casting and sand processing equipment has a long cooling cycle, which affects continuous production and increases energy consumption and processing costs.

[0003] Therefore, how to improve the processing efficiency of sand casting and sand processing equipment is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, the present invention provides a sand casting and sand treatment equipment to improve the processing efficiency of the sand casting and sand treatment process.

[0005] In order to achieve the above object, the present invention provides the following technical solutions: A sand casting and sand processing device, comprising an old sand processing device for performing sand removal and magnetic separation on old sand in a sand return box; A used sand storage device for storing and transporting the processed used sand; A new sand mixing device for preparing new sand by mixing the old sand fed into the old sand storage device with new sand; Wherein, a pouring and conveying device is arranged at the output end of the new sand mixing device, and a casting sand box to be loaded with new sand is arranged on the pouring and conveying device, and the casting sand box is subjected to a pouring process after being loaded with new sand; A cooling conveyor is arranged at the input end of the used sand storage device, and the cooling conveyor is used to receive the return sand box recovered by the pouring process; Sand line changing devices for circulating the sand boxes are arranged at both ends of the conveying direction of the cooling conveying device and the pouring conveying device.

[0006] Preferably, in the above-mentioned sand casting and sand processing equipment, a belt conveyor for conveying new sand is arranged at the output end of the new sand mixing device, and a new sand injection device connected to the pouring and conveying device is arranged on the belt conveyor, and the new sand injection device includes a first vibrating conveying trough and a second vibrating conveying trough arranged at intervals along the conveying direction of the pouring and conveying device.

[0007] Preferably, in the above-mentioned sand casting and sand processing equipment, a return sand line changing device for changing the line of the return sand box is provided between the cooling conveying device and the old sand processing device. The return sand line changing device comprises a first box pusher arranged on a first side of the conveying direction of the cooling conveyor; a box-poking track arranged opposite to the first box pusher and arranged on a second side of the conveying direction of the cooling conveyor, the box-poking track receiving the return sand box fed by the first box pusher; A second box pusher for pushing out the sand mold in the sand return box is arranged on the top of the box-poking track, and a sand falling device for receiving the sand mold is arranged opposite to the second box pusher at the bottom of the box-poking track.

[0008] Preferably, in the above-mentioned sand casting and sand processing equipment, the sand falling device includes a vibrating sand falling device for vibrating and conveying the falling sand, and the vibrating sand falling device vibrates and disperses the falling sand and conveys it to the old sand processing device; The vibrating sand falling device comprises a sand receiving hopper arranged relatively below the second box pusher, a hopper support supporting the sand receiving hopper, and an elastic vibration support for elastically supporting the sand receiving hopper arranged between the hopper support and the sand receiving hopper; A sand falling space for the sand return sand box of the mold closing through the box-pushing track is reserved between the second box-pushing machine and the sand receiving hopper.

[0009] Preferably, in the above-mentioned sand casting and sand processing equipment, the used sand processing device comprises a used sand conveyor belt for conveying used sand, a first bucket elevator provided at the conveying end of the used sand conveyor belt, and a used sand screening device for receiving the used sand conveyed by the first bucket elevator and classifying and screening the used sand; A magnetic adsorption separation device for removing iron impurities in the used sand is arranged above the conveyor belt of the used sand; a magnetic separation head wheel for magnetically screening the used sand after magnetic separation is also arranged at the conveying end of the used sand conveyor belt.

[0010] Preferably, in the above-mentioned sand casting and sand treatment equipment, the magnetic adsorption separation device comprises a permanent magnetic separator for adsorbing the iron impurities, and a magnetic conveyor belt slidably matched with the magnetic end face of the permanent magnetic separator, the magnetic conveyor belt slides on the magnetic end face of the permanent magnetic separator, and releases and separates the iron impurities after sliding out of the magnetic end face; The magnetic conveyor belt and the used sand conveyor belt are staggered in the conveying direction.

[0011] Preferably, in the above-mentioned sand casting and sand processing equipment, the height of the used sand conveyor belt along its conveying direction gradually increases, and the conveying angle of the used sand conveyor belt is 9°-10°.

[0012] Preferably, in the above-mentioned sand casting and sand processing equipment, the new sand mixing device includes a level machine for monitoring and controlling the material level, and a disc feeder is arranged below the level machine.

[0013] Preferably, in the above-mentioned sand casting and sand treatment equipment, it also includes a vibrating boiling cooling bed, wherein the boiling cooling bed is provided with a temperature sensor for monitoring the surface temperature of the molding sand therein, and a humidity sensor for detecting the humidity in the boiling cooling bed; The invention also includes a controller, wherein the controller receives the temperature and humidity collected by the temperature sensor and the humidity sensor to control the air output of the vibration boiling cooling bed.

[0014] Preferably, in the above-mentioned sand casting and sand processing equipment, a reinforcing plate is fixedly installed on the side plate of the sand storage hopper of the material level machine, a vibration motor is installed on the reinforcing plate, and the eccentric direction of the vibration motor is set in the plate surface direction of the outlet slope of the sand storage hopper.

[0015] The sand casting and sand processing equipment provided by the present invention comprises an old sand processing device for removing sand and magnetically separating old sand in a return sand box; an old sand storage device for storing and conveying the treated old sand; a new sand mixing device for mixing the old sand fed into the old sand storage device with new sand to prepare the new sand; a pouring conveying device is arranged at the output end of the new sand mixing device, and a casting sand box to be loaded with new sand is arranged on the pouring conveying device, and a pouring process is performed after the casting sand box is loaded with new sand; a cooling conveying device is arranged at the input end of the old sand storage device, and the cooling conveying device is used to receive the return sand box recovered by the pouring process; sand line changing devices for circulating the sand box are arranged at both ends of the conveying direction of the cooling conveying device and the pouring conveying device.

[0016] The sand casting and sand treatment equipment consists of a used sand treatment device, which performs sand removal and magnetic separation on the used sand in the return sand box to remove impurities and iron filings in the sand; the used sand storage device stores the treated used sand to be transported to the next process for sand treatment; the new sand mixing device mixes the old sand with the new sand to prepare sand suitable for casting; the casting sand box is switched between different processes through a pouring conveyor device and a cooling conveyor device; the cooling conveyor device receives the return sand box after the pouring process is completed; the sand box contains cooled used sand and is ready for the next step of treatment; the pouring conveyor device The device is responsible for conveying the casting sand box filled with new sand to the pouring area and providing the necessary sand boxes for the pouring process. The sand line changing device enables the production line to flexibly switch between different processes, thereby improving the adaptability and flexibility of the production line. By setting up independent cooling conveying devices and pouring conveying devices, the loading of new sand into the sand box, the pouring process of castings, the cooling process of castings after pouring, and the processing process of old sand are arranged independently. The casting and cooling processes are carried out in parallel, and the cooling cycle can be independently controlled, which improves the production efficiency of castings, reduces costs, increases the output rate of products, and ensures production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of the sand casting and sand processing equipment provided by the present invention; Figure 2 for Figure 1 Sectional view in the AA direction; Figure 3 for Figure 1 Cross-sectional view in CC direction; Figure 4 for Figure 1 Cross-sectional view in the middle DD direction; Figure 5 for Figure 1 Cross-sectional view along the EE direction. DETAILED DESCRIPTION

[0019] The invention discloses a sand casting and sand mold processing device, which improves the processing efficiency of the sand casting and sand mold processing process.

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 5 As shown, Figure 1 A schematic diagram of the structure of the sand casting and sand processing equipment provided by the present invention; Figure 2 for Figure 1 Sectional view in the AA direction; Figure 3 for Figure 1 Cross-sectional view in CC direction; Figure 4 for Figure 1 Cross-sectional view in the middle DD direction; Figure 5 for Figure 1 Cross-sectional view along the EE direction.

[0022] The present embodiment provides a sand casting and sand processing equipment, including an old sand processing device 101 for removing sand and magnetically separating old sand in a return sand box; an old sand storage device 102 for storing and conveying the processed old sand; a new sand mixing device 103 for mixing the old sand fed into the old sand storage device with new sand; a pouring conveying device 104 is arranged at the output end of the new sand mixing device 103, and a casting sand box to be loaded with new sand is arranged on the pouring conveying device, and a pouring process is performed after the casting sand box is loaded with new sand; a cooling conveying device 105 is arranged at the input end of the old sand storage device 101, and the cooling conveying device 105 is used to receive the return sand box recovered by the pouring process; sand line changing devices for circulating the sand box are arranged at both ends of the conveying direction of the cooling conveying device 105 and the pouring conveying device 104.

[0023] The sand casting and sand treatment equipment is composed of an old sand treatment device 101, which performs sand removal and magnetic separation on the old sand in the return sand box to remove impurities and iron filings in the sand; the old sand storage device 101 stores the treated old sand to be transported to the next process for sand treatment, and the new sand mixing device 103 mixes the old sand with the new sand to prepare sand suitable for casting. The casting sand box is switched between different processes through a pouring conveyor 104 and a cooling conveyor 105. The cooling conveyor 105 receives the return sand box after the pouring process is completed. The sand box contains the cooled old sand and is ready for the next step of treatment. The pouring conveyor 104 is responsible for conveying the casting sand box filled with new sand to the pouring area, providing the necessary sand boxes for the pouring process, and the sand line changing device realizes flexible switching of the production line between different processes, thereby improving the adaptability and flexibility of the production line. By setting up an independent cooling conveyor 105 and a pouring conveyor 104, new sand is loaded into the sand box, the pouring process of the casting, the cooling process of the casting after pouring, and the processing process of the old sand are independently arranged, the casting and cooling processes are carried out in parallel, and the cooling cycle can be independently controlled, thereby improving the production efficiency of castings, reducing costs, increasing the output rate of products, and ensuring production capacity.

[0024] In a specific embodiment of the present case, a belt conveyor 22 for conveying new sand is arranged at the output end of the new sand mixing device 103, and a new sand injection device 23 connected to the pouring conveyor 104 is arranged on the belt conveyor 22. The new sand injection device 23 includes a first vibrating conveyor trough and a second vibrating conveyor trough arranged at intervals along the conveying direction of the pouring conveyor. The belt conveyor 22 provides a continuous and stable conveying method to convey the new sand from the mixing device to the pouring conveyor 104. By adjusting the speed of the belt conveyor 22, the flow rate of the new sand can be controlled to meet the needs of the pouring process. The new sand injection device 23 has a first vibrating conveyor trough and a second vibrating conveyor trough arranged in sequence, ensuring that the new sand can be accurately injected into the casting sand box to ensure the quality of the casting. The provision of the first vibrating conveyor trough and the second vibrating conveyor trough can improve the fluidity of the new sand, reduce blockage, and ensure that the new sand is injected uniformly and continuously. At the same time, the vibrating conveyor troughs arranged at intervals can ensure that the new sand is more evenly distributed on the pouring conveyor, and the new sand injection of the upper mold and the lower mold can be performed at the same time, thereby improving the injection efficiency of the sand mold.

[0025] The new sand mixing device 103 is quantitatively conveyed by the grid doser 18, and the conveyed new sand is transmitted to the belt conveyor by the screw feeder 19. During the conveying, water is added by the quantitative water adding device 20 to increase the humidity. At the same time, the new sand is continuously mixed by the rotor sand mixer 21, so that the new sand to be poured meets the sand mold molding requirements and improves the quality of the sand mold after molding.

[0026] In a specific embodiment of the present case, a return sand line changing device 106 for changing the line of the return sand box is provided between the cooling conveying device 105 and the old sand processing device 101. The return sand line changing device 106 comprises a first box pusher 1 arranged on a first side of the conveying direction of the cooling conveyor 105; a box poking track 3 arranged opposite to the first box pusher 1 and arranged on a second side of the conveying direction of the cooling conveyor 105, the box poking track 3 receiving the return sand box fed by the first box pusher 1; A second box pusher 4 for pushing out the sand mold in the return sand box is arranged on the top of the box-poking track 3, and a sand falling device 2 for receiving the sand mold is arranged opposite to the second box pusher 4 at the bottom of the box-poking track 3.

[0027] The first box pusher 1 is arranged on the first side of the conveying direction of the cooling conveyor 105, and is used to push the cooled sand box from the cooling conveyor 105 to the box-pushing track 3, so as to realize automatic pushing of the sand box, reduce manual operation, and improve production efficiency and safety. The box-pushing track 3 is arranged opposite to the first box pusher 1, and on the second side of the conveying direction of the cooling conveyor 105, as a channel for the movement of the sand box, receives the sand box pushed by the first box pusher 1, and guides it to the position of the second box pusher 4. The sand-falling device 2 is arranged at the bottom of the box-pushing track 3, and is arranged opposite to the second box pusher 4, receives the sand mold pushed by the second box pusher 4, and performs sand-falling treatment so that the old sand can be recovered and reused. Reasonable design of the conveying path and equipment layout ensures that the sand box can be moved quickly and efficiently between different devices. The modular design allows the various parts of the sand return line changing device 106 to be upgraded or replaced as needed, which is convenient for maintenance and expansion.

[0028] In a specific embodiment of the present case, the sand falling device 2 includes a vibrating sand falling device for vibrating and conveying the sand falling, the vibrating sand falling device vibrates and disperses the sand falling, and conveys the sand falling to the old sand processing device; The vibrating sand falling device comprises a sand receiving hopper 201 arranged relatively below the second box pusher 4, a hopper support 202 supporting the sand receiving hopper 201, and an elastic vibration support 203 for elastically supporting the sand receiving hopper arranged between the hopper support 202 and the sand receiving hopper 201; A sand falling space for the sand return sand box of the mold closing is reserved between the second box pusher 4 and the sand receiving hopper 201 through the box poking track 3.

[0029] The vibrating sand-falling device 2 disperses the fallen sand by vibration, so as to facilitate further processing by the old sand processing device 106. The vibrating sand-falling device 106 includes a vibrating motor, a vibrating plate or other vibrating elements to achieve effective dispersion of the sand. After the return sand box enters the box-pushing track 3, it cooperates with the vibrating sand-falling device 2 to process the old sand. The vibrating sand-falling device 2 includes a sand receiving hopper 201, which is opposite to the return sand box and is arranged relatively below the second box-pushing machine 4, for receiving the sand mold pushed out from the second box-pushing machine 4. The sand receiving hopper 201 can withstand the impact of the falling sand and has sufficient capacity to store a certain amount of sand.

[0030] A hopper support 202 is also arranged below the sand receiving hopper 201, and the two are supported by an elastic vibration support, including a support rod and a damping spring arranged at the end of the support rod, to provide vibration support for the sand receiving hopper.

[0031] The second box pusher 4 is arranged above the box-pushing track 3, and the return sand box is transported to the box-pushing track 3 and positioned below the second box pusher 4. A sand falling space is formed between the second box pusher 4 and the box-pushing track 3 for the return sand box to pass through, and a working space for the operating equipment is reserved.

[0032] In a specific embodiment of the present case, the used sand processing device 101 includes a used sand conveyor belt 6 for conveying used sand, a first bucket elevator 9 provided at the conveying end of the used sand conveyor belt 6, and a used sand screening device 10 for receiving the used sand conveyed by the first bucket elevator 9 and classifying and screening the used sand; A magnetic adsorption separation device 7 for removing iron impurities in the old sand is arranged above the conveying belt 6; a magnetic separation head wheel 8 for magnetically screening the old sand after magnetic separation is also arranged at the conveying end of the old sand conveyor belt 6.

[0033] The old sand conveyor belt 6 is used to transport the old sand from the box track 3 upward; a magnetic adsorption separation device 7 is arranged above the old sand conveyor belt 6 to remove iron impurities in the old sand; a first bucket elevator 9 is arranged at the end of the old sand conveyor belt 6 to lift the old sand after magnetic adsorption separation; a magnetic separation head wheel 8 is arranged at the end of the old sand conveyor belt 6 to perform secondary magnetic screening on the old sand after magnetic adsorption separation. The lifting height of the first bucket elevator 9 can be set to 2-5 meters.

[0034] The old sand screening device 10 may adopt a multi-layer sieve plate structure and screen the old sand by combining a coarse screen and a fine screen.

[0035] In a specific embodiment of the present case, the magnetic adsorption separation device 7 includes a permanent magnetic separator for adsorbing iron impurities, and a magnetic conveyor belt that slides with the magnetic end face of the permanent magnetic separator. The magnetic conveyor belt slides on the magnetic end face of the permanent magnetic separator, and releases and separates the iron impurities after sliding out of the magnetic end face; the magnetic conveyor belt and the old sand conveyor belt 6 are staggered in the conveying direction.

[0036] Since the old sand is continuously conveyed on the old sand conveyor belt 6, iron impurities are easily accumulated on the magnetic adsorption separation device 7. In order to avoid overloading of the magnetic adsorption separation device 7, the magnetic adsorption separation device 7 adopts a magnetic conveyor belt, which is staggered with the old sand conveyor belt 6. A permanent magnetic separator is arranged in the magnetic adsorption separation device 7, and the adsorption end face of the permanent magnetic separator is attached to the inner surface of the magnetic conveyor belt. During the conveying process of the magnetic conveyor belt, it is attached to the adsorption end face of the permanent magnetic separator. After the iron impurities in the old sand are adsorbed by the permanent magnetic separator, they will stick to the outer surface of the magnetic conveyor belt, and be affected by the adsorption effect of the permanent magnetic separator and follow the conveying of the magnetic conveyor belt. After the magnetic conveyor belt slides out of the adsorption end face of the permanent magnetic separator, the iron impurities on the magnetic conveyor belt can automatically fall off.

[0037] By setting up the magnetic adsorption separation device 7, the iron impurities on the old sand are cyclically adsorbed and separated by using the permanent magnetic separator and the magnetic suction conveyor belt matched therewith, so as to realize the continuous separation of the iron impurities in the old sand on the old sand conveyor belt.

[0038] Furthermore, the height of the used sand conveyor belt 6 along its conveying direction is gradually increased, and the conveying angle of the used sand conveyor belt 6 is 9°-10°. The used sand conveyor belt 6 conveys the used sand to the used sand screening device 10, and when the used sand needs to be conveyed again, it cooperates with the magnetic adsorption separation device 7 to adsorb and remove iron impurities. The conveying angle of the used sand conveyor belt 6 is set to 9°-10°. On the one hand, a stable used sand conveying speed can be obtained. At the same time, the magnetic adsorption separation device 7 obtains the same inclination angle of 9°-10°, which can obtain a stable iron impurity suction efficiency, and can also minimize the accumulation of iron impurities on one side of the magnetic conveyor belt caused by adsorbed impurities, which causes large wear on one side of the magnetic conveyor belt and affects the service life of the equipment.

[0039] In a specific embodiment of the present case, the new sand mixing device 102 includes a level machine 15 for monitoring and controlling the material level, and a disc feeder 16 is provided below the level machine 15. The level machine 15 is used to mix the old sand and the new sand therein, and monitor the height and mixing degree of the mixed materials. After the old sand and the new sand materials are mixed, the mixed materials are discharged through the disc feeder 16 below the level machine 15. The disc feeder 16 automatically adjusts the feeding amount of the new sand and the old sand mixture according to the detection result of the level machine 15 to reach the preset target value, thereby realizing accurate control of the feeding amount.

[0040] In a specific embodiment of the present case, it also includes a vibrating boiling cooling bed 12, in which a temperature sensor for monitoring the surface temperature of the molding sand inside the boiling cooling bed and a humidity sensor for detecting the humidity inside the boiling cooling bed are arranged; and a controller is also arranged, and the controller receives the temperature and humidity collected by the temperature sensor and the humidity sensor to control the air volume of the vibrating boiling cooling bed. The boiling cooler 12 uses air to heat through a heat exchanger, and forms hot air, which is distributed into the main machine through a valve plate, and the wet material enters the dryer from the feeder. Due to the effect of wind pressure, the material forms a boiling state in the dryer and is in extensive contact with the hot air, so that the material is dried in a relatively short time. A temperature sensor and a humidity sensor are arranged in the boiling cooling bed, and are connected to the controller. The controller controls the air volume of the boiling cooling bed, adjusts the hot air of the boiling cooling bed to cooperate with the humidity and temperature state of the material inside it, optimizes the material drying air volume, fully utilizes the energy, and reduces energy consumption. During the mixing process of old sand and new sand, a fine hexagonal screen is arranged in the old sand screening device 10. After the old sand is screened by the fine hexagonal screen, the material is transported through the second bucket elevator 14 and the third bucket elevator 17 between the old sand screening device 10, the material level machine 15 and the boiling cooling bed 12 to mix the old and new sands. A sand quantitative gate is arranged at the bottom of the boiling cooling bed 12 to meet the transportation demand of the new sand after mixing.

[0041] In a specific embodiment of the present case, a reinforcing plate is fixedly mounted on the side plate of the sand storage hopper of the material level machine 15, a vibration motor is mounted on the reinforcing plate, and the eccentric direction of the vibration motor is set in the direction of the plate surface of the outlet slope of the sand storage hopper.

[0042] The mixed new sand material is sent to the sand mixer, and the mixed molding sand is sent to the sand storage hopper of the upper and lower molding machines through the belt. At this time, the molding sand contains a certain amount of moisture and viscosity. Since the molding machine needs time to operate the molding sand, the static time of the molding sand in the sand storage hopper is gradually prolonged, making it difficult for the molding sand to fall naturally. By setting a vibration motor on the side plate of the sand storage hopper of the material level machine, and setting a reinforcement plate on the side plate of the sand storage hopper, the vibration motor is fixed to the sand storage hopper through the reinforcement plate. The eccentric direction of the vibration motor is set with the plate surface direction of the outlet slope of the sand storage hopper. The eccentric block of the vibration motor can change the direction and intensity of vibration by adjusting its position and weight. It can be adjusted by fine-tuning the position of the eccentric block, or by increasing or decreasing the counterweight on the eccentric block. When adjusting, it is necessary to ensure that the position of the eccentric block maintains a certain offset from the center line of the motor output shaft to control the direction of vibration.

[0043] The direction of the outlet inclined plate surface of the sand storage hopper. The design of the sand storage hopper needs to take into account the flow characteristics of the old sand. The direction of the outlet inclined plate surface should match the vibration direction generated by the vibration motor to facilitate the smooth flow of the old sand. Specifically, the plate surface of the outlet inclined surface and the vibration direction form a certain angle so that the vibration is along the direction of the outlet inclined plate surface, which promotes the movement of materials and reduces the accumulation of materials at the outlet.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sand casting and sand processing equipment, characterized in that, It includes an old sand processing device for dropping out and magnetically separating the old sand in the return sand box; A used sand storage device for storing and transporting the processed used sand; A new sand mixing device for preparing new sand by mixing the old sand fed into the old sand storage device with new sand; Wherein, a pouring and conveying device is arranged at the output end of the new sand mixing device, and a casting sand box to be loaded with new sand is arranged on the pouring and conveying device, and the casting sand box is subjected to a pouring process after being loaded with new sand; A cooling conveyor is arranged at the input end of the used sand storage device, and the cooling conveyor is used to receive the return sand box recovered by the pouring process; Sand line changing devices for circulating the sand boxes are arranged at both ends of the conveying direction of the cooling conveying device and the pouring conveying device.

2. The sand casting and sand processing equipment according to claim 1, characterized in that: A belt conveyor for conveying new sand is arranged at the output end of the new sand mixing device, and a new sand injection device connected to the pouring and conveying device is arranged on the belt conveyor, and the new sand injection device includes a first vibrating conveying trough and a second vibrating conveying trough arranged at intervals along the conveying direction of the pouring and conveying device.

3. The sand casting and sand processing equipment according to claim 2, characterized in that: A return sand line changing device for changing the line of the return sand box is arranged between the cooling conveying device and the old sand processing device. The return sand line changing device comprises a first box pusher arranged on a first side of the conveying direction of the cooling conveyor; a box-poking track arranged opposite to the first box pusher and arranged on a second side of the conveying direction of the cooling conveyor, the box-poking track receiving the return sand box fed by the first box pusher; A second box pusher for pushing out the sand mold in the sand return box is arranged on the top of the box-poking track, and a sand falling device for receiving the sand mold is arranged opposite to the second box pusher at the bottom of the box-poking track.

4. The sand casting and sand processing equipment according to claim 3, characterized in that: The sand falling device comprises a vibrating sand falling device for vibrating and conveying the sand falling, wherein the vibrating sand falling device vibrates and disperses the sand falling and conveys the sand falling to the old sand processing device; The vibrating sand falling device comprises a sand receiving hopper arranged relatively below the second box pusher, a hopper support supporting the sand receiving hopper, and an elastic vibration support for elastically supporting the sand receiving hopper arranged between the hopper support and the sand receiving hopper; A sand falling space for the sand return sand box of the mold closing through the box-pushing track is reserved between the second box-pushing machine and the sand receiving hopper.

5. The sand casting and sand processing equipment according to claim 4, characterized in that: The used sand processing device comprises a used sand conveyor belt for conveying used sand, a first bucket elevator provided at the conveying end of the used sand conveyor belt, and a used sand screening device for receiving the used sand conveyed by the first bucket elevator and classifying and screening the used sand; A magnetic adsorption separation device for removing iron impurities in the used sand is arranged above the conveyor belt of the used sand; a magnetic separation head wheel for magnetically screening the used sand after magnetic separation is also arranged at the conveying end of the used sand conveyor belt.

6. The sand casting and sand processing equipment according to claim 5, characterized in that: The magnetic adsorption separation device comprises a permanent magnetic separator for adsorbing the iron impurities, and a magnetic conveyor belt slidably matched with the magnetic end surface of the permanent magnetic separator, wherein the magnetic conveyor belt slides on the magnetic end surface of the permanent magnetic separator and releases and separates the iron impurities after sliding out of the magnetic end surface; The magnetic conveyor belt and the used sand conveyor belt are staggered in the conveying direction.

7. The sand casting and sand processing equipment according to claim 6, characterized in that: The height of the used sand conveyor belt along its conveying direction gradually increases, and the conveying angle of the used sand conveyor belt is 9°-10°.

8. The sand casting and sand processing equipment according to claim 6, characterized in that: The new sand mixing device comprises a level machine for monitoring and controlling the material level, and a disc feeder is arranged below the level machine.

9. The sand casting and sand treatment equipment according to claim 8, characterized in that: It also includes a vibrating boiling cooling bed, wherein the boiling cooling bed is provided with a temperature sensor for monitoring the surface temperature of the molding sand therein, and a humidity sensor for detecting the humidity in the boiling cooling bed; The invention also includes a controller, wherein the controller receives the temperature and humidity collected by the temperature sensor and the humidity sensor to control the air output of the vibration boiling cooling bed.

10. The sand casting and sand processing equipment according to claim 8, characterized in that: A reinforcing plate is fixedly mounted on the side plate of the sand storage hopper of the material level machine, a vibration motor is mounted on the reinforcing plate, and the eccentric direction of the vibration motor is arranged in the direction of the plate surface of the outlet inclined surface of the sand storage hopper.

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