CN212598693U

CN212598693U - Complete equipment for alkali phenolic aldehyde jewel sand regeneration recycling technology

Info

Publication number: CN212598693U
Application number: CN202021692169.5U
Authority: CN
Inventors: 朱以松; 周光照
Original assignee: Wuxi Xinan Foundry Machinery Co ltd
Current assignee: Wuxi Xinan Foundry Machinery Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-02-26
Anticipated expiration: 2030-08-13

Abstract

The utility model belongs to the technical field of casting machinery used sand regeneration complete equipment, and relates to alkali phenolic aldehyde precious bead sand regeneration recycling technology complete equipment, which comprises a surface sand regeneration line, a back sand regeneration line, a side-out sand shakeout machine and a shakeout machine, wherein after pouring and cooling, a boxless sand block to be shaked runs to a tilting roller way and tilts to a shakeout grid of the side-out sand shakeout machine, and the shakeout grid is connected with the surface sand regeneration line through a first vibration conveying groove; the side-discharging shakeout machine is also used for conveying the massive sand to the shakeout machine in a vibrating manner, and the massive sand enters the back sand regeneration line through the second vibrating conveying groove after being crushed by the shakeout machine. The complete equipment can realize mechanical regeneration of the jewel sand, and each index meets the technological requirements of the cast steel facing sand, thereby reducing the emission of waste sand. The burning decrement of the reclaimed sand is less than or equal to 0.5 percent, and the reuse rate of the used sand is more than or equal to 97 percent.

Description

Complete equipment for alkali phenolic aldehyde jewel sand regeneration recycling technology

Technical Field

The utility model belongs to the technical field of casting machine used sand regeneration complete sets, a alkali phenolic aldehyde precious pearl sand regeneration cyclic utilization technique complete sets is related to.

Background

In China, along with the continuous development of the casting industry, the traditional modeling quartz sand has the problems of low casting precision, serious sand sticking on the surface of a casting, difficult sand removal and the like due to large expansion coefficient. At present, most of domestic foundry enterprises begin to use the precious pearl sand instead. The Baozhu sand is used as novel artificial sand and spherical particles, has excellent performance, is applied to the fields of high manganese steel castings, large steel castings and the like, and obtains satisfactory effect. As the amount of jewellery sand increases year by year, the problem of its regeneration begins to be appreciated by founders. However, no intensive research is carried out on the existing technology and equipment for regenerating the alkali phenolic precious sand. The regeneration quality of the used sand of the alkali phenolic aldehyde Baozhu sand is poor, and the reuse rate of the used sand is not high, so that the popularization and the application of the alkali phenolic aldehyde Baozhu sand are greatly restricted.

In order to solve the problems, a novel alkali phenolic aldehyde jewel sand regeneration cycle process device is urgently needed to be invented, after mechanical regeneration of jewel sand is realized, all indexes meet the process requirements of cast steel facing sand, and waste sand emission is reduced. The burning decrement of the reclaimed sand is less than or equal to 0.5 percent, and the reuse rate of the used sand is more than or equal to 97 percent.

Disclosure of Invention

The utility model provides an above-mentioned problem, provide a precious pearl sand regeneration of alkali phenolic aldehyde recycles technical complete sets, this complete sets has realized the reposition of redundant personnel of precious pearl facing sand, back of the body sand, and then adopts different regeneration mode to facing sand and back of the body sand. The overflow technology is arranged on the surface sand regeneration line to the back sand regeneration line, so that only the used sand meeting the sand temperature requirement can enter the surface sand regeneration line, and the surface sand regeneration quality is ensured. Meanwhile, the sand exceeding the production capacity of the facing sand regeneration line also overflows to the back sand regeneration line.

The surface sand regeneration line adopts a continuous type circulation centrifugal mechanical regeneration mode, and hot air at 150 ℃ is blown out by a hot air winnowing machine in the circulation process to continuously heat the sand. The alkali phenolic resin film attached to the surface of the jewel sand falls off in the continuous high-temperature rubbing process, so that the burning decrement of the face sand is less than or equal to 0.5 percent, and the performance indexes of the re-bonding strength, the service time, the refractoriness and the like of the face sand are close to those of new sand, the face sand can be used as the face sand instead of the new sand or single sand, and the waste sand emission is reduced.

According to the technical scheme of the utility model: a complete set of alkali phenolic aldehyde jewel sand regeneration recycling technology is characterized in that: the device comprises a surface sand regeneration line, a back sand regeneration line, a side-outlet shakeout machine and a shakeout machine, wherein after pouring and cooling, a boxless sand block to be shaked runs to a tilting roller way and is tilted to a shakeout grid of the side-outlet shakeout machine, and the shakeout grid is connected with the surface sand regeneration line through a first vibration conveying groove; the side sand discharging and shakeout machine is also used for conveying the massive sand to the shakeout machine in a vibrating manner, and the massive sand enters the back sand regeneration line through the second vibrating conveying groove after being crushed by the shakeout machine;

the face sand regeneration line comprises a transition sand hopper connected to the discharge end of a first vibrating conveying groove, the discharge end of the transition sand hopper is connected with the feed end of a first hopper lifter, the upper discharge port of the first hopper lifter is connected with a first buffer sand hopper through a first pneumatic gate valve, the bottom of the first buffer sand hopper is connected with the feed end of a first magnetic separation roller through a single sand gate valve, the discharge end of the first magnetic separation roller is connected with the feed end of a first linear vibrating screen, the lower part of the first linear vibrating screen is connected with a first centrifugal regenerator, the discharge end of the first centrifugal regenerator is connected with a hot air winnower, the lower discharge end of the hot air winnower is connected with a second hopper lifter, the lower part of the sand outlet of the second hopper lifter is communicated with the feed end of a second buffer sand hopper through a third pneumatic gate valve, the lower part of the second buffer sand hopper is communicated with the feed end of the first centrifugal regenerator through a flow orifice plate, and a first upper material level meter is arranged on the second buffer sand hopper, the first material loading level indicator is in signal connection with the single sand gate valve, and a discharge hole of the second bucket elevator is connected with the first cache sand warehouse;

the back sand regeneration line comprises a suspended magnetic separator connected to the discharge end of the second vibrating conveying groove, the discharge end of the suspended magnetic separator is connected with the feed end of a third bucket elevator, the discharge end of the third bucket elevator is connected with a block sand warehouse, the discharge end of the block sand warehouse is connected with a vibrating feeder, the discharge end of the vibrating feeder is connected with the feed end of a crushing regenerator, the discharge end of the crushing regenerator is connected with a fourth bucket elevator, the discharge end of the fourth bucket elevator is connected with the feed end of a second magnetic separation roller, the discharge end of the second magnetic separation roller is connected with a second linear vibrating screen, the discharge end of the second linear vibrating screen is connected with a second buffer sand warehouse, the bottom discharge end of the second buffer sand warehouse is connected with the feed end of a second centrifugal regenerator, and the discharge end of the second centrifugal regenerator is connected with a hot air fanning machine, the lower discharge end of the hot air winnowing machine is connected with the feed end of the fifth bucket elevator, and the discharge port of the fifth bucket elevator is connected with the third cache sand warehouse.

As a further improvement, the discharge end of the first buffer sand warehouse is connected with a first sand temperature regulator, and the discharge end of the first sand temperature regulator is connected with a first pneumatic conveying tank.

As a further improvement, the discharge end of the third buffer sand warehouse is connected with a second sand temperature regulator, and the discharge end of the second sand temperature regulator is connected with a second pneumatic sending tank.

As a further improvement of the utility model, an infrared temperature sensor for detecting the sand temperature is arranged at the sand outlet at the front end of the vibration conveying groove so as to detect the sand temperature; the upper discharge port of the first bucket elevator is connected with the upper end of a sand sliding pipe through a second pneumatic gate valve, and the lower end of the sand sliding pipe is connected with a sand warehouse; when the sand temperature is more than or equal to 100 ℃, closing the second pneumatic gate valve and opening the first pneumatic gate valve at the same time, and allowing high-temperature sand to enter a first buffer sand hopper and further enter a sand recycling line with a jewel sand surface; when the sand temperature is less than 100 ℃, closing the first pneumatic gate valve, simultaneously opening the second pneumatic gate valve, and feeding the jewel sand which does not reach the sand temperature standard into a back sand regeneration line through a sand sliding pipe; be provided with the second on the first buffer memory sand hopper and go up the charge level indicator, send out the police dispatch newspaper when the second, first pneumatic gate valve is closed, and the pneumatic gate valve of second is opened simultaneously, and the precious pearl sand passes through the swift current sand pipe, flows into the piece sand storehouse of precious pearl sand back of the body sand regeneration line.

As a further improvement of the utility model, the hot air winnowing machine of the face sand regeneration line comprises a first hot air winnowing machine and a second hot air winnowing machine.

The technical effects of the utility model reside in that: the utility model discloses the product adopts two different sand processing lines of face sand, back sand, and whole set of regeneration line adopts two shakeout machines of different forms simultaneously, carries out preliminary screening to the precious pearl sand after the breakage, wherein is located near the precious pearl sand in foundry goods surface, owing to accepted the pouring high temperature sintering, has gone through the thermal method regeneration similarly, has formed grit granule or tiny sand piece, and this part grit flows in precious pearl sand face sand regeneration line, and all the other grit then flows in back sand regeneration line. The invention realizes the shunting of the sand surface and the back sand of the jewel, and further adopts different regeneration modes for the surface sand and the back sand. The overflow technology is arranged on the surface sand regeneration line to the back sand regeneration line, so that only the used sand meeting the sand temperature requirement can enter the surface sand regeneration line, and the surface sand regeneration quality is ensured. Meanwhile, the sand exceeding the production capacity of the facing sand regeneration line also overflows to the back sand regeneration line.

The surface sand regeneration line adopts a continuous type circulation centrifugal mechanical regeneration mode, and hot air at 150 ℃ is blown out by a hot air winnowing machine in the circulation process to continuously heat the sand. The alkali phenolic resin film attached to the surface of the jewel sand falls off in the continuous high-temperature rubbing process, so that the burning decrement of the face sand is less than or equal to 0.5 percent, and the performance indexes of the re-bonding strength, the service life, the refractoriness and the like of the face sand are close to those of new sand, and the face sand can be used as the face sand instead of the new sand or single sand. And waste sand discharge is reduced.

The utility model discloses in research and development an alkali phenolic aldehyde precious pearl sand regeneration recycling technique complete sets, technical indicator satisfies: 1. the burning decrement of the reclaimed sand is less than or equal to 0.5 percent; 2. the index of the reclaimed sand meets the molding process requirement of the alkali phenolic Baozhu sand, and the reuse rate of the used sand is more than or equal to 95 percent.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a front view of the medium sand regenerating line of the present invention.

Fig. 3 is a front view of the sand reclamation line of the utility model.

Fig. 4 is a front view of the middle sand overflow sand-back line of the utility model.

Fig. 5 is an isometric view of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

In the drawings 1-5, the device comprises a side sand discharging shakeout machine 1, a vibration conveying groove 2, a shakeout machine 3, a vibration conveying groove 4, an infrared temperature sensor 5, a transition sand hopper 6, a first hopper lifter 7, a first pneumatic gate valve 8, a second pneumatic gate valve 9, a first buffer sand hopper 10, a single sand gate valve 11, a first magnetic separation roller 12, a first linear vibrating screen 13, a first centrifugal regenerator 14, a first hot air winnowing machine 15, a second hot air winnowing machine 16, a flow pore plate 18, a second buffer sand hopper 19, a second hopper lifter 20, a loading level meter 21, a third pneumatic gate valve 22, a first buffer sand warehouse 23, a first sand temperature regulator 24, a first air sending tank 25, a suspended magnetic separator 26, a third hopper lifter 27, a lump sand hopper 28, a vibrating feeder 29, a crushing regenerator 30, a fourth hopper lifter 31, a second magnetic separation roller 32, a second linear vibrating screen 33, a second buffer sand warehouse 34, A second centrifugal regenerator 35, a third hot air winnowing machine 36, a fifth bucket elevator 37, a third buffer sand warehouse 38, a second sand temperature regulator 39, a second pneumatic conveying tank 40, a sand sliding pipe 41 and the like.

As shown in fig. 1-5, the utility model relates to an alkali phenolic aldehyde precious pearl sand regeneration cycle uses technical complete sets, including face sand regeneration line, back sand regeneration line, side-out shakeout machine 1 and shakeout machine 3, the boxless sand piece that waits to shakeout after the pouring cooling moves to the roll table of tumbling, and tumbles to the shakeout grid of side-out shakeout machine 1, and the shakeout grid connects face sand regeneration line via first vibratory conveying groove 2; the side-out shakeout machine 1 is also used for conveying the massive sand to the shakeout machine 3 in a vibrating manner, and the massive sand enters the back sand regeneration line through the second vibrating conveying groove 4 after being crushed by the shakeout machine 3.

The facing sand regeneration line comprises a transition sand hopper 6 connected to the discharge end of a first vibrating conveying groove 2, the discharge end of the transition sand hopper 6 is connected with the feed end of a first hopper lifter 7, the discharge port at the upper part of the first hopper lifter 7 is connected with a first buffer sand hopper 10 through a first pneumatic gate valve 8, the bottom of the first buffer sand hopper 10 is connected with the feed end of a first magnetic separation roller 12 through a single sand gate valve 11, the discharge end of the first magnetic separation roller 12 is connected with the feed end of a first linear vibrating screen 13, the lower part of the first linear vibrating screen 13 is connected with a first centrifugal regenerator 14, the discharge end of the first centrifugal regenerator 14 is connected with a hot air winnowing machine which comprises a first hot air winnowing machine 15 and a second hot air winnowing machine 16, the discharge end at the lower part of the hot air winnowing machine is connected with a second hopper lifter 20, the lower part of the sand outlet of the second hopper lifter 20 is communicated with the feed end of a second buffer sand hopper 19 through a third pneumatic gate valve 22, the lower part of a second buffer sand hopper 19 is communicated with the feeding end of the first centrifugal regenerator 14 through a flow orifice plate 18, a first feeding level indicator 21 is arranged on the second buffer sand hopper 19, the first feeding level indicator 21 is in signal connection with the single sand gate valve 11, the discharge hole of the second bucket elevator 20 is connected with a first buffer sand warehouse 23, the discharge end of the first buffer sand warehouse 23 is connected with a first sand temperature regulator 24, and the discharge end of the first sand temperature regulator 24 is connected with a first pneumatic transmission tank 25.

The back sand regeneration line comprises a suspended magnetic separator 26 connected with the discharge end of the second vibrating conveying groove 4, the discharge end of the suspended magnetic separator 26 is connected with the feed end of a third hopper lifting machine 27, the discharge end of the third hopper lifting machine 27 is connected with a block sand warehouse 28, the discharge end of the block sand warehouse 28 is connected with a vibrating feeder 29, the discharge end of the vibrating feeder 29 is connected with the feed end of a crushing and regenerating machine 30, the discharge end of the crushing and regenerating machine 30 is connected with a fourth hopper lifting machine 31, the discharge end of the fourth hopper lifting machine 31 is connected with the feed end of a second magnetic separation roller 32, the discharge end of the second magnetic separation roller 32 is connected with a second linear vibrating screen 33, the discharge end of the second linear vibrating screen 33 is connected with a second buffer sand warehouse 34, the bottom discharge end of the second buffer sand warehouse 34 is connected with the feed end of a second centrifugal regenerating machine 35, the discharge end of the second centrifugal regenerating machine 35 is connected with a hot air separator, the lower discharge end of the hot air separator is connected with the feed end of a fifth hopper lifting, the discharge port of the fifth bucket elevator 37 is connected with a third buffer sand storage 38, the discharge end of the third buffer sand storage 38 is connected with a second sand temperature regulator 39, and the discharge end of the second sand temperature regulator 39 is connected with a second pneumatic sending tank 40.

An infrared temperature sensor 5 for detecting the sand temperature is arranged at a sand outlet at the front end of the vibration conveying groove 2 so as to detect the sand temperature; the upper discharge port of the first bucket elevator 7 is connected with the upper end of a sand sliding pipe 41 through a second pneumatic gate valve 9, and the lower end of the sand sliding pipe 41 is connected with a sand warehouse 28; when the sand temperature is more than or equal to 100 ℃, the second pneumatic gate valve 9 is closed, meanwhile, the first pneumatic gate valve 8 is opened, and high-temperature sand enters the first buffer sand hopper 10 and further enters a sand recycling line with a jewel sand surface; when the sand temperature is less than 100 ℃, the first pneumatic gate valve 8 is closed, and the second pneumatic gate valve 9 is opened at the same time, so that the jewel sand which does not reach the sand temperature standard enters a back sand regeneration line through a sand sliding pipe 41; the first buffer sand hopper 10 is provided with a second material loading level meter, when the second material loading level meter gives an alarm, the first pneumatic gate valve 8 is closed, meanwhile, the second pneumatic gate valve 9 is opened, and the jewel sand flows into the block sand warehouse 28 of the jewel sand back sand regeneration line through the sand sliding pipe 41.

As attached figure 1, the utility model relates to an alkali phenolic aldehyde precious pearl sand regeneration uses technology complete sets, wait to shake out after the cooling including need pouring the no case sand block of sand and move to the motor-driven roll table of tumbling, tumble the sand block to the side on the shakeout machine 1 that shakes out, be located near the casting surface high temperature precious pearl sand flow in side sand shakeout machine 1, through vibratory conveying groove 2, get into precious pearl sand face sand circulation regeneration line. And castings, chills, large massive sands and the like enter the shakeout machine 3 through the rapid vibration of the side-out shakeout machine 1. After the large block-shaped sand is crushed on the shakeout machine 3, the large block-shaped sand enters the vibration conveying groove 4 and then enters the baozhu sand back sand regeneration line.

As shown in attached figures 2 and 4, the sand outlet of the first vibration conveying groove 2 is provided with an infrared temperature sensor 5 for detecting the sand temperature, and the sand outlet temperature is monitored in real time. When the sand temperature is more than or equal to 100 ℃, the second pneumatic gate valve 9 is closed, and the first pneumatic gate valve 8 is opened at the same time. The high-temperature jewel sand enters the first cache sand hopper 10 and then enters a jewel sand surface sand centrifugal regeneration circulation line. When the sand temperature is less than 100 ℃, the first pneumatic gate valve 8 is closed, and simultaneously the second pneumatic gate valve 9 is opened, so that the jewel sand which can not reach the sand temperature standard enters a back sand regeneration line through the sand sliding pipe 41. A material loading level meter is arranged on the first buffer sand hopper 10, when the material loading level meter gives an alarm, the first pneumatic gate valve 8 is closed, meanwhile, the second pneumatic gate valve 9 is opened, the jewel sand flows into the block sand warehouse 28 of the jewel sand back sand regeneration line through the sand sliding pipe 41, and therefore sand exceeding the face sand cyclic regeneration capacity flows into the back sand regeneration line.

As shown in the attached figure 2, the sand recycling line of the Baozhu sand surface: the precious pearl sand in the first vibratory conveying groove 2 enters a transition sand hopper 6, is lifted by a first hopper lifter 7 and then enters a first buffer sand hopper 10 through opening and closing of a first pneumatic gate valve 8. The jewel sand in the first buffer sand hopper 10 enters a first magnetic separation roller 12 through a single sand gate valve 11 at the bottom of the sand hopper, and the jewel sand subjected to magnetic separation enters a first linear vibrating screen 13. The screened Baozhu sand enters a first centrifugal regenerator 14, and the sand enters a first hot air winnowing machine 15 after being centrifugally regenerated at high temperature and high speed. After the first hot air winnowing machine 15 continuously heats and winnows the sand in hot air, the sand is lifted by the second bucket elevator 20, and is opened and closed by a third pneumatic gate valve 22 at the lower part of a sand outlet of the second bucket elevator 20, so that the primarily regenerated jewel sand flows into the second buffer sand hopper 19. The jewel sand passes through the flow orifice plate 18 at the lower part of the second buffer sand hopper 19 and enters the centrifugal regenerator again for mechanical regeneration. When the level meter 21 on the second sand buffer 19 issues an alarm, the single sand gate valve 11 is closed to stop feeding sand. At this time, the mechanical regeneration circulation line of the baby pearl sand surface sand runs at full load, when the baby pearl sand reaches the set regeneration duration, the third pneumatic gate valve 22 is closed, and the regenerated baby pearl sand enters the first cache sand warehouse 23. When the sand outlet of the second bucket elevator 20 detects a sand-free state, the single sand gate valve 11 and the first magnetic separation roller 12 are simultaneously opened, and the circulating regeneration line enters a sand filling process. The regenerated jewel sand is cooled by a first sand temperature regulator 24, enters a first pneumatic conveying tank 25 and is conveyed to a facing sand or a single sand-used sand department.

As shown in the attached figure 3, the Baozhu sand back sand regeneration line: the sand in the second vibrating conveyor groove 4 passes through the suspended magnetic separator 26 to carry out the first-step magnetic separation on the sand. And then lifted by a third bucket elevator 27, and the sand enters a block sand storage 28. The sand from the lump sand magazine 28 passes through a vibratory feeder 29 and into a crushing regenerator 30. The crushed sand is lifted by the fourth bucket elevator 31 and enters the second magnetic separation drum 32. After the sand is subjected to the second magnetic separation, the sand is sieved by a second linear vibrating screen 33 and then enters a second cache sand warehouse 34. The sand in the buffer sand storage enters the second centrifugal regenerator 35 through a single sand regulating valve at the bottom of the sand storage. After the sand collides at a high speed and is subjected to friction stripping, the sand enters a fifth bucket elevator 37 through a third hot air winnowing machine 36, and the sand enters a third cache sand warehouse 38 after being lifted by the bucket elevator. The sand in the buffer sand storage enters a second sand temperature regulator 39 to cool the sand, then enters a second pneumatic sending tank 40, and is sent to a sand using department to be used as the back sand of the jewel sand molding.

The complete equipment for the alkali phenolic aldehyde used sand regeneration and recycling technology meets the technological requirements of the steel casting facing sand by various indexes of the regenerated used sand, and simultaneously improves the reuse rate of the used sand of the steel casting facing. The regeneration line adopts two shakeout machines with different forms to primarily screen the crushed jewel sand, wherein, the jewel sand near the surface of the casting is subjected to pouring high-temperature sintering, similarly to thermal regeneration, sand particles or fine sand blocks are formed, the sand flows into the jewel sand surface sand regeneration line, and the rest sand flows into the back sand regeneration line. The sand regeneration line realizes the shunting of the sand surface and the back sand of the jewel, and further adopts different regeneration modes for the surface sand and the back sand. The overflow technology is arranged on the surface sand regeneration line to the back sand regeneration line, so that only the used sand meeting the sand temperature requirement can enter the surface sand regeneration line, and the high-temperature regeneration quality of the surface sand is ensured. Meanwhile, the sand exceeding the production capacity of the facing sand regeneration line also overflows to the back sand regeneration line.

The surface sand regeneration line adopts a continuous type circulating centrifugal mechanical regeneration mode, and hot air at 150 ℃ is blown out by an IMF hot air winnowing machine in the circulating process to continuously heat the sand. The alkali phenolic resin film attached to the surface of the jewel sand falls off in the continuous high-temperature rubbing process, so that the burning decrement of the face sand is less than or equal to 0.5 percent, and the performance indexes of the re-bonding strength, the service life, the refractoriness and the like of the face sand are close to those of new sand, and the face sand can be used as the face sand instead of the new sand or single sand. And waste sand discharge is reduced.

The used sand produced by the complete equipment of the alkali phenolic aldehyde precious pearl sand regeneration and circulation technology has the technical indexes that: 1. the burning decrement of the reclaimed sand is less than or equal to 0.5 percent; 2. the index of the reclaimed sand meets the molding process requirement of the alkali phenolic Baozhu sand, and the reuse rate of the used sand is more than or equal to 97 percent.

Claims

1. A complete set of alkali phenolic aldehyde jewel sand regeneration recycling technology is characterized in that: the device comprises a surface sand regeneration line, a back sand regeneration line, a side-outlet shakeout machine (1) and a shakeout machine (3), wherein after pouring and cooling, a boxless sand block to be shaked runs to a tilting roller way and is tilted to a shakeout grid of the side-outlet shakeout machine (1), and the shakeout grid is connected with the surface sand regeneration line through a first vibration conveying groove (2); the side sand discharging and shakeout machine (1) is also used for conveying the massive sand to the shakeout machine (3) in a vibrating manner, and the massive sand enters a back sand regeneration line through a second vibrating conveying groove (4) after being crushed by the shakeout machine (3);

the facing sand regeneration line comprises a transition sand hopper (6) connected to the discharge end of a first vibrating conveying trough (2), the discharge end of the transition sand hopper (6) is connected with the feed end of a first hopper lifter (7), the upper discharge port of the first hopper lifter (7) is connected with a first buffer sand hopper (10) through a first pneumatic gate valve (8), the bottom of the first buffer sand hopper (10) is connected with the feed end of a first magnetic separation roller (12) through a single sand gate valve (11), the discharge end of the first magnetic separation roller (12) is connected with the feed end of a first linear vibrating screen (13), the lower part of the first linear vibrating screen (13) is connected with a first centrifugal regenerator (14), the discharge end of the first centrifugal regenerator (14) is connected with a hot air winnowing machine, the lower discharge end of the hot air winnowing machine is connected with a second hopper lifter (20), the lower part of the sand outlet of the second hopper lifter (20) is communicated with the feed end of a second buffer sand hopper (19) through a third pneumatic gate valve (22), the lower part of a second buffer sand hopper (19) is communicated with the feed end of a first centrifugal regenerator (14) through a flow pore plate (18), a first material loading level indicator (21) is arranged on the second buffer sand hopper (19), the first material loading level indicator (21) is in signal connection with a single sand gate valve (11), and the discharge hole of a second bucket elevator (20) is connected with a first buffer sand warehouse (23);

the back sand regeneration line comprises a suspended magnetic separator (26) connected to the discharge end of a second vibrating conveying groove (4), the discharge end of the suspended magnetic separator (26) is connected with the feed end of a third bucket elevator (27), the discharge end of the third bucket elevator (27) is connected with a sand warehouse (28), the discharge end of the sand warehouse (28) is connected with a vibrating feeder (29), the discharge end of the vibrating feeder (29) is connected with the feed end of a crushing regenerator (30), the discharge end of the crushing regenerator (30) is connected with a fourth bucket elevator (31), the discharge end of the fourth bucket elevator (31) is connected with the feed end of a second magnetic separation roller (32), the discharge end of the second magnetic separation roller (32) is connected with a second linear vibrating screen (33), the discharge end of the second linear vibrating screen (33) is connected with a second buffer sand warehouse (34), the discharge end of the bottom of the second buffer sand warehouse (34) is connected with the feed end of a second centrifugal regenerator (35), the discharge end of the second centrifugal regenerator (35) is connected with a hot air winnowing machine, the discharge end of the lower part of the hot air winnowing machine is connected with the feed end of the fifth bucket elevator (37), and the discharge hole of the fifth bucket elevator (37) is connected with the third buffer sand warehouse (38).

2. The alkali phenolic precious sand reclamation and recycling technology complete equipment as recited in claim 1, characterized in that: the discharge end of the first buffer sand warehouse (23) is connected with a first sand temperature regulator (24), and the discharge end of the first sand temperature regulator (24) is connected with a first pneumatic transmitting tank (25).

3. The alkali phenolic precious sand reclamation and recycling technology complete equipment as recited in claim 1, characterized in that: the discharge end of the third cache sand warehouse (38) is connected with a second sand temperature regulator (39), and the discharge end of the second sand temperature regulator (39) is connected with a second pneumatic transmitting tank (40).

4. The alkali phenolic precious sand reclamation and recycling technology complete equipment as recited in claim 1, characterized in that: an infrared temperature sensor (5) for detecting the sand temperature is arranged at a sand outlet at the front end of the vibration conveying groove (2) so as to detect the sand temperature; a discharge port at the upper part of the first bucket elevator (7) is connected with the upper end of a sand sliding pipe (41) through a second pneumatic gate valve (9), and the lower end of the sand sliding pipe (41) is connected with a sand warehouse (28); when the sand temperature is more than or equal to 100 ℃, the second pneumatic gate valve (9) is closed, meanwhile, the first pneumatic gate valve (8) is opened, and high-temperature sand enters the first buffer sand hopper (10) and further enters a sand recycling line of the sand surface of the jewel; when the sand temperature is less than 100 ℃, the first pneumatic gate valve (8) is closed, and the second pneumatic gate valve (9) is opened at the same time, so that the precious pearl sand which does not reach the sand temperature standard enters a back sand regeneration line through a sand sliding pipe (41); the first buffer sand hopper (10) is provided with a second material loading level meter, when the second material loading level meter gives an alarm, the first pneumatic gate valve (8) is closed, meanwhile, the second pneumatic gate valve (9) is opened, and the jewel sand flows into a block sand warehouse (28) of the jewel sand back sand regeneration line through the sand sliding pipe (41).

5. The alkali phenolic precious sand reclamation and recycling technology complete equipment as recited in claim 1, characterized in that: the hot air winnowing machine of the flour sand regeneration line comprises a first hot air winnowing machine (15) and a second hot air winnowing machine (16).