CN114543421A - High-temperature quartz sand cooling and waste heat recovery device - Google Patents

Abstract

The invention discloses a high-temperature quartz sand cooling and waste heat recovery device, and particularly relates to the technical field of quartz sand processing. According to the invention, by arranging the first guide pipe, the liquid discharge pipe, the radiating fin and the fan, the effect of recycling can be realized after the cooling liquid is conveyed into the cooling box again through the return pipe, so that the recovery device does not need to consume a large amount of resources to cool the cooling liquid, and the heat is recovered, thereby accelerating the drying of quartz sand, reducing the cost of the recovery device during use and ensuring the production efficiency of the recovery device during large-scale treatment of the quartz sand.

Description

A high temperature quartz sand cooling and waste heat recovery device

technical field

The invention relates to the technical field of quartz sand processing, and more particularly, the invention relates to a high-temperature quartz sand cooling and waste heat recovery device.

Background technique

Quartz sand is quartz particles made by crushing and processing quartz stone. Quartz is a non-metallic mineral, a hard, wear-resistant and chemically stable silicate mineral. The color of quartz sand is milky white or colorless and translucent, and the Mohs hardness is 7. Quartz sand is an important industrial mineral raw material, non-chemical dangerous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux , metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.

High-purity quartz sand (purity 99.99% or more) is the raw material for crucibles in the production of solar monocrystalline silicon. Due to its high purity and complex and strict production process, it is a product with high added value. In the process of producing high-purity quartz sand, there is a high-temperature drying treatment process. The temperature of the quartz sand after high-temperature treatment is above 1000 degrees Celsius, and it needs to be cooled.

However, there are certain conditions for natural cooling. Exposing the quartz stone to the air for natural cooling can easily lead to heat dissipation in the air, which not only causes a waste of natural resources, but also easily pollutes the processed quartz sand during the cooling process, reducing the The purity of the finished quartz sand will affect the processing quality of the quartz sand. At the same time, the natural cooling method of the quartz sand takes a lot of time. At present, most of the auxiliary cooling devices have a poor heat rate for the quartz sand, which improves the quartz sand. Cooling and processing costs limit the efficiency of mass production of quartz sand.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-temperature quartz sand cooling and waste heat recovery device. The technical problem to be solved by the present invention is: natural cooling has certain conditions, and the quartz stone is exposed to the air for natural cooling It is easy to cause heat to escape into the air, which not only causes a waste of natural resources, but also easily pollutes the processed quartz sand during the cooling process, reduces the purity of the finished quartz sand, and affects the processing quality of the quartz sand. Natural cooling of sand takes a lot of time, and most of the current auxiliary cooling devices have poor heat rate for quartz sand, which increases the cost of quartz sand cooling and processing, and limits the efficiency of large-scale production of quartz sand.

In order to achieve the above purpose, the present invention provides the following technical solutions: a high-temperature quartz sand cooling and waste heat recovery device, comprising a sealing top cover, the lower surface of the sealing top cover and the upper surface of the processing shell are mutually clamped, and the processing The lower surfaces of the inner wall of the shell are respectively fixedly connected with the lower surfaces of the three treatment boxes. The treatment boxes are provided with screw rods, the screw rods are composed of screw blades and connecting rods, and the bottom ends of the screw rods pass through the filter. The baffle is drivingly connected with the top of the fan blade, the lower surface of the filter baffle is fixedly connected with the lower surface of the inner wall of the treatment box, the outer surface of the fan blade is sleeved with a bearing, and the outer surface of the bearing is connected to the bearing cage The inner wall of the first sealing cover is fixedly connected, the outer surface of the bearing holder is fixedly connected with the inner wall of the first sealing cover, and the upper surface of the first sealing cover is fixedly connected with the lower surface of the processing box.

The lower surface of the processing box is provided with a through hole, the processing box is communicated with the first sealing cover through the through hole, the lower surface of the first sealing cover is communicated with the top end of the first conduit, the first conduit The other end is communicated with the right end of the second conduit, the outer surface of the first conduit is fixedly connected with the inner wall of the positioning block, the lower surface of the positioning block is fixedly connected with the lower surface of the inner wall of the processing housing, the second conduit The other end is communicated with the top ends of the two third conduits respectively through elbows and tee, the bottom ends of the third conduits are fixedly connected with the upper surface of the second sealing cover, and the first conduit passes through the second conduit and The third conduit communicates with the second sealing cover, the lower surface of the second sealing cover is fixedly connected with the lower surface of the inner wall of the processing shell, and the second sealing cover is provided with a drain pipe.

As a further solution of the present invention: the left end of the drain pipe is communicated with the right side of the transfer box, the right end of the drain pipe is communicated with the left side of the processing tank, and the outer surface of the drain pipe is fixedly connected with a Several fins are evenly distributed on the outer surface of the drain pipe.

As a further solution of the present invention, three fans are fixedly connected to the lower surface of the inner wall of the processing shell, and the three fans are respectively located in the three second sealing covers, and the air inlet of the fans is connected to the top of the first air inlet pipe. The other end of the first air intake pipe is communicated with the bottom end of the second air intake pipe through the base.

As a further solution of the present invention: the upper surface of the base is fixedly connected to the lower surface of the processing shell, and the top ends of the three second air intake pipes are connected to the same joint through the connecting pipe, and one end of the front of the joint is connected to the filter The back of the box is communicated, and the lower surface of the filter box is fixedly connected with the upper surface of the sealing top cover.

As a further solution of the present invention: the upper surface of the sealing top cover is provided with two exhaust holes, and the left and right sides of the inner walls of the two exhaust holes are provided with card grooves, and the card grooves opened inside the exhaust holes A rotating device is clamped inside, and one end corresponding to the opposite surfaces of the two rotating devices is fixedly connected with the left and right sides of the same filter wheel.

As a further solution of the present invention: the rotating device is composed of a bearing and a rotating shaft, the outer surface of the filter wheel is overlapped with the inner wall of the third sealing cover, and the lower surface of the third sealing cover is connected with the upper surface of the sealing top cover. The surfaces are fixedly connected, and the outer surface of the third sealing cover is communicated with the right side of the filter box through a connecting pipe.

As a further solution of the present invention: the lower surface of the inner wall of the processing shell is fixedly connected with the lower surface of the cooling box, the upper surface of the cooling box is communicated with the bottom ends of several first infusion pipes, and several first The other ends of the infusion tubes are respectively communicated with the right ends of the six second infusion tubes, and the left ends of the corresponding two second infusion tubes are communicated with the right side of the same processing box.

As a further solution of the present invention: the right side of the cooling box is fixedly connected to the valve, the left side of the cooling box is communicated with the right ends of the two return pipes, and one end of the front and one end of the back of the return pipes are respectively connected with Opposite surfaces of the two transfer boxes are communicated, and the lower surfaces of the three transfer boxes are all communicated with the lower surface of the inner wall of the processing shell, and water pumps are arranged in the cooling box and the transfer box.

The beneficial effects of the present invention are:

1. In the present invention, by setting the first conduit, the first sealing cover, the drain pipe, the heat sink and the fan, when the coolant enters the transfer box along the drain pipe on the left side of the processing box, the coolant absorbs a large amount of quartz sand. When the gas passes through the second sealing cover and enters the first conduit, the air flow rate on the surface of the discharge pipe will be accelerated, so as to absorb the heat of the coolant whose temperature has been increased through the heat sink. At this time, the high temperature gas will It will enter the first sealing cover with the first conduit and the second conduit, so that the gas discharged into the first sealing cover still contains heat, which has an auxiliary effect on the drying of the quartz sand and prevents the surface of the quartz sand from sticking for a long time. The quality of the quartz sand is affected by the liquid in the cooling zone, and this method can greatly reduce the temperature of the cooling liquid, and the effect of recycling can be realized after the cooling liquid is transported to the cooling box through the return pipe, so that the recovery device There is no need to spend a lot of resources to cool the coolant, and by recycling the heat, the drying of the quartz sand is accelerated. At the same time, due to the rapid circulation of the air, the temperature rise of the quartz sand after the discharge of high temperature gas is reduced. The cost when the recovery device is used, and the production efficiency of the recovery device for large-scale processing of quartz sand is guaranteed;

2. In the present invention, by setting the fan blades, the screw rod and the treatment box, after the quartz sand to be cooled is completely poured into the treatment box, the water pump inside the cooling box and the transfer box is started and the fan is started, because the fan will pass through the cooling box during operation. The first air intake pipe and the second air intake pipe extract the outside air, and discharge the gas into the processing box through the first sealing cover, so that when the gas passes through the first sealing cover, it will drive the fan blade to rotate, and when the fan blade rotates, the fan blade rotates. During the process, the screw rod will be rotated synchronously, so that the quartz sand under the treatment box will move upward with the rotation of the screw rod, so that the recovery device can effectively use the wind generated by the fan to dissipate heat, and pass the wind. The function adjusts the position of the quartz sand inside the treatment box below, so as to avoid the excessive wetness of the quartz sand below due to long-term accumulation, and at the same time, it reduces the heat transfer up and affects the heat dissipation of the quartz sand above, thus ensuring the While the recovery device has a heat dissipation effect on the quartz sand, the processing efficiency of the recovery device on the quartz sand is improved;

3. In the present invention, by setting the filter box, the filter wheel and the third sealing cover, since the inside of the processing shell is in a sealed state, the gas will be discharged with the exhaust hole, and the gas will squeeze the filter wheel during the discharge process. , so that the filter wheel is in a rotating state, and the impurities contained in the gas will fall off when the filter wheel is in contact with the third sealing cover. At this time, the impurities will be retained in the filter box, and the gas will enter the fan again. For use, the recovery device can effectively collect and process the impurities and waste gas generated during the processing of quartz sand, thereby reducing the impact of the recovery device on the environment in the process of processing quartz sand, thereby ensuring the actual performance of the recovery device. use effect.

Description of drawings

Fig. 1 is the three-dimensional structural representation of the present invention;

Fig. 2 is the structural schematic diagram of the three-dimensional processing shell of the present invention;

Fig. 3 is the three-dimensional cross-sectional structure schematic diagram of the processing box of the present invention;

4 is a three-dimensional structural schematic diagram of the first sealing cover of the present invention;

5 is a three-dimensional cross-sectional structural schematic diagram of the second sealing cover of the present invention;

FIG. 6 is a three-dimensional cross-sectional structural schematic diagram of the sealing top cover of the present invention;

In the figure: 1. Sealed top cover, 2. Processing shell, 3. Treatment box, 4. Screw rod, 5. Filter baffle, 6. Fan blades, 7. Bearing, 8. Bearing cage, 9. First sealing cover, 10. First conduit, 11. Positioning block, 12 second conduit, 13 third conduit, 14 second sealing cover, 15 drain pipe, 16 heat sink, 17 transfer box, 18 fan, 19 base, 20 first air intake pipe, 21 second air intake pipe, 22 joint, 23 filter box, 24 third sealing cover, 25 exhaust hole, 26 rotating device, 27 filter wheel, 28 cooling box, 29 first infusion pipe, 30 second infusion pipe, 31 valve, 32 return pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figures 1-6, the present invention provides a high temperature quartz sand cooling and waste heat recovery device, comprising a sealing top cover 1, the lower surface of the sealing top cover 1 and the upper surface of the processing shell 2 are mutually clamped, and the processing shell The lower surfaces of the inner walls of the body 2 are respectively fixedly connected with the lower surfaces of the three treatment boxes 3. The treatment boxes 3 are provided with a screw rod 4. The screw rod 4 is composed of a screw blade and a connecting rod. The bottom end of the screw rod 4 passes through the filter block. The plate 5 is connected to the top of the fan blade 6 in a driving connection, the lower surface of the filter baffle 5 is fixedly connected to the lower surface of the inner wall of the treatment box 3, the outer surface of the fan blade 6 is sleeved with a bearing 7, and the outer surface of the bearing 7 is connected with the bearing cage. The inner wall of the first sealing cover 9 is fixedly connected, the outer surface of the bearing holder 8 is fixedly connected with the inner wall of the first sealing cover 9 , and the upper surface of the first sealing cover 9 is fixedly connected with the lower surface of the processing box 3 .

The lower surface of the processing box 3 is provided with a through hole, the processing box 3 is communicated with the first sealing cover 9 through the through hole, the lower surface of the first sealing cover 9 is communicated with the top end of the first conduit 10, and the other side of the first conduit 10 is connected. One end is communicated with the right end of the second conduit 12, the outer surface of the first conduit 10 is fixedly connected with the inner wall of the positioning block 11, the lower surface of the positioning block 11 is fixedly connected with the lower surface of the inner wall of the processing housing 2, and the other side of the second conduit 12 is fixedly connected. One end is communicated with the top ends of the two third conduits 13 respectively through the elbow and the tee, the bottom end of the third conduit 13 is fixedly connected with the upper surface of the second sealing cover 14, and the first conduit 10 passes through the second conduit 12 and the second conduit 13. The three conduits 13 communicate with the second sealing cover 14 , the lower surface of the second sealing cover 14 is fixedly connected with the lower surface of the inner wall of the processing shell 2 , and the second sealing cover 14 is provided with a drain pipe 15 . 10. The first sealing cover 9, the cooling fins 16 and the fan 18, the above methods can greatly reduce the temperature of the cooling liquid, and the effect of recycling can be achieved after the cooling liquid is transported to the cooling box 28 through the return pipe 32 again. , so that the recovery device does not need to spend a lot of resources to cool the cooling liquid, and by recycling the heat, the drying of the quartz sand is accelerated. In this case, the cost of using the recovery device is reduced, and the production efficiency of the recovery device for large-scale processing of quartz sand is guaranteed.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the left end of the drain pipe 15 is communicated with the right side of the transfer box 17, the right end of the drain pipe 15 is communicated with the left side of the processing box 3, and the drain pipe The outer surface of 15 is fixedly connected with a number of heat sinks 16, and the plurality of heat sinks 16 are evenly distributed on the outer surface of the drain pipe 15, and the lower surface of the inner wall of the processing shell 2 is fixedly connected with three fans 18, and the three fans 18 They are respectively located in the three second sealing covers 14, the air inlet of the fan 18 is communicated with the top end of the first air intake pipe 20, and the other end of the first air intake pipe 20 is connected to the bottom end of the second air intake pipe 21 through the base 19 The upper surface of the base 19 is fixedly connected with the lower surface of the processing shell 2, and by arranging the screw rod 4 and the processing box 3, when the recovery device is used, the wind power generated when the fan 18 is dissipated can be effectively utilized, and the The function adjusts the position of the quartz sand inside the processing box 3 below, so as to avoid the excessive wetness of the quartz sand below due to long-term accumulation, and at the same time, it reduces the heat transfer up and affects the heat dissipation of the quartz sand above, thus ensuring While improving the heat dissipation effect of the recovery device on the quartz sand, the processing efficiency of the recovery device on the quartz sand is improved, and the tops of the three second air inlet pipes 21 are communicated with the same joint 22 through the connecting pipe, and one end of the front side of the joint 22 is connected. It communicates with the back of the filter box 23 , and the lower surface of the filter box 23 is fixedly connected with the upper surface of the sealing top cover 1 .

As shown in Figure 1, Figure 3, Figure 5 and Figure 6, the upper surface of the sealing top cover 1 is provided with two exhaust holes 25, and the left and right sides of the inner walls of the two exhaust holes 25 are provided with card grooves to discharge the exhaust holes 25. A rotating device 26 is clamped in the card slot opened inside the air hole 25, and one end corresponding to the opposite surfaces of the two rotating devices 26 is fixedly connected with the left and right sides of the same filter wheel 27, because the filter wheel 27 and the rotating device 26 are provided. , so that when the gas is discharged through the exhaust hole 25, the filter wheel 27 can be in a rotating state, and the rotating device 26 is composed of a bearing and a rotating shaft, thereby ensuring the stability of the filter wheel 27 when it rotates. The rotating device 26 is composed of a bearing and a rotating shaft The outer surface of the filter wheel 27 is overlapped with the inner wall of the third sealing cover 24, the lower surface of the third sealing cover 24 is fixedly connected with the upper surface of the sealing top cover 1, and the outer surface of the third sealing cover 24 is connected through the connecting pipe. It communicates with the right side of the filter box 23 .

As shown in Figure 3, Figure 5 and Figure 6, the lower surface of the inner wall of the processing shell 2 is fixedly connected to the lower surface of the cooling box 28, and the upper surface of the cooling box 28 is communicated with the bottom ends of several first infusion pipes 29, And the other ends of the several first infusion tubes 29 are respectively connected with the right ends of the six second infusion tubes 30, and the left ends of the corresponding two second infusion tubes 30 are communicated with the right side of the same processing box 3, and the cooling box 28 The right side of the cooling box 28 is fixedly connected to the valve 31, and the left side of the cooling box 28 is communicated with the right ends of the two return pipes 32. Because the third sealing cover 24 and the filter wheel 27 are provided, the recovery device can effectively process the quartz The impurities and waste gas generated during sand are collected and processed, thereby reducing the impact of the recovery device on the environment in the process of processing quartz sand, thereby ensuring the actual use effect of the recovery device. They are respectively communicated with the opposite surfaces of the two transfer boxes 17 , and the lower surfaces of the three transfer boxes 17 are all communicated with the lower surface of the inner wall of the processing shell 2 .

The working principle of the present invention: when using the recovery device, the cooling liquid needs to be injected into the cooling box 28 through the valve 31, and when the quartz sand needs to be cooled, only the sealing top cover 1 needs to be opened, and then the processed quartz The sand is poured into the treatment box 3. After the quartz sand to be cooled is completely dumped into the treatment box 3, start the water pump in the cooling box 28 and the transfer box 17 and start the fan 18, because the fan 18 will pass through the first The air intake pipe 20 and the second air intake pipe 21 extract the outside air, and discharge the gas into the processing box 3 through the first sealing cover 9, so that when the gas passes through the first sealing cover 9, it will drive the fan blades 6 to rotate, and in the During the rotation of the fan blade 6, the screw rod 4 will be rotated synchronously, so that the quartz sand under the processing box 3 will move upward with the rotation of the screw rod 4. When the cooling liquid drains along the left side of the processing box 3 When the pipe 15 enters the transfer box 17, since the cooling liquid absorbs a large amount of heat from the quartz sand, the gas will accelerate the air flow rate on the surface of the drain pipe 15 during the process of entering the first conduit 10 through the second sealing cover 14. Therefore, the heat of the cooling liquid whose temperature has been increased is absorbed by the heat sink 16, and at this time, the high-temperature gas will enter the first sealing cover 9 along with the first conduit 10 and the second conduit 12, so that the air discharged into the first sealing cover 9 is discharged. The gas still contains heat. When the high temperature gas gradually cools down as the liquid on the surface of the quartz sand evaporates, it will be discharged into the processing shell 2. Since the inside of the processing shell 2 is in a sealed state, the gas will follow the exhaust hole. 25 is discharged, and in the process of discharging, the gas will squeeze the filter wheel 27, so that the filter wheel 27 is in a rotating state, and the impurities contained in the gas will follow the filter wheel 27 in the process of contacting the third sealing cover 24. Falling, because the third sealing cover 24 is connected with the filter box 23, the filtered impurities and the filtered gas will enter the filter box 23 again. At this time, the impurities will be retained in the filter box 23, and the gas will enter again. Fan 18 is available for use.

The last points to be noted are: First of all, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, and may be mechanical connection. or electrical connection, or internal communication between two components, or direct connection, "up", "down", "left", "right", etc. are only used to indicate relative positional relationship, when the absolute position of the object being described changes, the relative positional relationship may change;

Secondly: in the drawings of the disclosed embodiments of the present invention, only the structures involved in the embodiments of the present disclosure are involved, other structures may refer to the general design, and the same embodiment and different embodiments of the present invention can be combined with each other under the condition of no conflict;

Finally: the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the present invention. within the scope of protection.

Claims (8)

1. A high-temperature quartz sand cooling and waste heat recovery device, comprising a sealing top cover (1), characterized in that: the lower surface of the sealing top cover (1) and the upper surface of the processing shell (2) are mutually clamped, The lower surfaces of the inner walls of the processing shell (2) are respectively fixedly connected to the lower surfaces of the three processing boxes (3), and the processing boxes (3) are provided with screw rods (4), and the screw rods (4) It is composed of a spiral blade and a connecting rod. The bottom end of the screw rod (4) passes through the filter baffle (5) and is connected to the top of the fan blade (6). The lower surface of the filter baffle (5) is connected to the The lower surface of the inner wall of the box (3) is fixedly connected, the outer surface of the fan blade (6) is sleeved with a bearing (7), and the outer surface of the bearing (7) is fixedly connected to the inner wall of the bearing holder (8), The outer surface of the bearing holder (8) is fixedly connected with the inner wall of the first sealing cover (9), and the upper surface of the first sealing cover (9) is fixedly connected with the lower surface of the processing box (3); The lower surface of the processing box (3) is provided with a through hole, the processing box (3) is communicated with the first sealing cover (9) through the through hole, and the lower surface of the first sealing cover (9) is connected with the first sealing cover (9). The top of a conduit (10) communicates with the top of the first conduit (10), the other end of the first conduit (10) communicates with the right end of the second conduit (12), and the outer surface of the first conduit (10) is connected to the The inner wall is fixedly connected, the lower surface of the positioning block (11) is fixedly connected to the lower surface of the inner wall of the processing housing (2), and the other end of the second conduit (12) is connected to the two second conduits respectively through the elbow and the tee. The top ends of the three conduits (13) communicate with each other, the bottom ends of the third conduits (13) are fixedly connected to the upper surface of the second sealing cover (14), and the first conduits (10) pass through the second conduits (12) and the third conduit (13) is communicated with the second sealing cover (14), the lower surface of the second sealing cover (14) is fixedly connected with the lower surface of the inner wall of the processing shell (2), the second sealing cover (14) is provided with a drain pipe (15). 2. A high-temperature quartz sand cooling and waste heat recovery device according to claim 1, characterized in that: the left end of the drain pipe (15) is communicated with the right side of the transfer box (17), and the drain The right end of the pipe (15) is communicated with the left side of the processing box (3), the outer surface of the drain pipe (15) is fixedly connected with a number of heat sinks (16), and the plurality of heat sinks (16) are evenly distributed On the outer surface of the drain pipe (15). 3. A kind of high temperature quartz sand cooling and waste heat recovery device according to claim 1, is characterized in that: the lower surface of the inner wall of described processing shell (2) is fixedly connected with three fans (18), and the three fans ( 18) are respectively located in the three second sealing covers (14), the air inlet of the fan (18) is communicated with the top end of the first air inlet pipe (20), and the other end of the first air inlet pipe (20) Pass through the base (19) and communicate with the bottom end of the second air intake pipe (21). 4. A high-temperature quartz sand cooling and waste heat recovery device according to claim 3, characterized in that: the upper surface of the base (19) is fixedly connected with the lower surface of the processing shell (2), and the three third The top ends of the two air intake pipes (21) are communicated with the same joint (22) through a connecting pipe, and one end of the front of the joint (22) is communicated with the back of the filter box (23). The surface is fixedly connected with the upper surface of the sealing top cover (1). 5. A high-temperature quartz sand cooling and waste heat recovery device according to claim 4, characterized in that: the upper surface of the sealing top cover (1) is provided with two exhaust holes (25), and two exhaust holes (25) are provided on the upper surface of the sealed top cover (1). The left and right sides of the inner wall of the air hole (25) are provided with card slots, and the card slots provided inside the exhaust hole (25) are all clipped with a rotating device (26), corresponding to the opposite surfaces of the two rotating devices (26). One end of the filter wheel (27) is fixedly connected with the left and right sides of the same filter wheel (27). 6. A high-temperature quartz sand cooling and waste heat recovery device according to claim 5, characterized in that: the rotating device (26) is composed of a bearing and a rotating shaft, and the outer surface of the filter wheel (27) is connected to the third The inner walls of the sealing cover (24) overlap each other, the lower surface of the third sealing cover (24) is fixedly connected with the upper surface of the sealing top cover (1), and the outer surface of the third sealing cover (24) is connected by The pipe communicates with the right side of the filter box (23). 7. A high-temperature quartz sand cooling and waste heat recovery device according to claim 2, characterized in that: the lower surface of the inner wall of the processing shell (2) is fixedly connected to the lower surface of the cooling box (28), and the The upper surface of the cooling box (28) is communicated with the bottom ends of the plurality of first infusion pipes (29), and the other ends of the plurality of first infusion pipes (29) are respectively connected with the right ends of the six second infusion pipes (30). The left ends of the corresponding two second infusion pipes (30) are communicated with the right side of the same processing box (3). 8. A high-temperature quartz sand cooling and waste heat recovery device according to claim 7, characterized in that: a valve (31) is fixedly connected to the right side of the cooling box (28), and a valve (31) is fixedly connected to the right side of the cooling box (28). The left side is communicated with the right ends of the two return pipes (32), and one end of the front and one end of the back of the return pipes (32) are respectively communicated with the opposite surfaces of the two transfer boxes (17), and the three transfer boxes ( The lower surface of 17) is in communication with the lower surface of the inner wall of the processing shell (2), and a water pump is provided in the cooling box (28) and the transfer box (17).

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