CN219810222U - Sand drying device and sand drying system - Google Patents

Abstract

The present disclosure relates to a sand drying device and sand drying system, the device includes: a tube body; the feeding port is arranged on the pipe body; the air inlet is arranged on the pipe body; the scattering device is arranged on the pipe body; and one end of the collecting pipe is communicated with the tail end of the pipe body along the air flow direction in the pipe body, and the other end of the collecting pipe is positioned outside the pipe body. According to the scheme, after sand in an initial state is conveyed into the scattering device through the feeding port, the scattering device can completely pulverize sand blocks with larger volumes into small particles, meanwhile, external hot air is conveyed to the air inlet cavity of the scattering device through the air inlet, at the moment, the pulverized small particle sand is rapidly dried in the scattering device, and the dried sand sequentially passes through the discharging port of the scattering device and the inner cavity of the pipe body and then enters the collecting pipe under the action of air flow. The whole process can be fast with the great sand lump of volume totally smash into small granule and dry, and stoving effect is good.

Description

Sand drying device and sand drying system

Technical Field

The disclosure relates to the technical field of engineering construction, in particular to a sand drying device and a sand drying system.

Background

With the wide application of sand in production and life, various engineering constructions are free from high-quality sand. Because the natural river sand used in the engineering construction coexist with the water in the initial state, the sand in the initial state can be used in the construction engineering after being dried in order to effectively reduce the influence on the construction performance.

The existing sand drying device generally adopts the method that when sand is conveyed, coal and the like are combusted to provide heat, so that the purpose of drying the sand is achieved. However, since sand coexisting with moisture is easily coagulated into a lump, for a large-sized sand lump, the existing sand drying apparatus cannot dry the moisture inside the sand lump, and the drying effect is poor.

Disclosure of Invention

Based on the above, it is necessary to provide a sand drying device and a sand drying system, which solve the problem that the existing drying device has poor drying effect when drying sand blocks with large volume.

The present disclosure provides a sand drying device, comprising:

a tube body;

the feeding port is arranged on the pipe body;

the air inlet is arranged on the pipe body;

the device comprises a scattering device, wherein the scattering device is arranged on the pipe body and is provided with an air inlet cavity, a feeding cylinder and a discharge hole, the scattering device is used for scattering sand entering the feeding cylinder, one end of the feeding cylinder is communicated with the air inlet cavity, the other end of the feeding cylinder is communicated with the discharge hole, the air inlet cavity is communicated with the air inlet, the feeding cylinder is communicated with the feeding hole, and the discharge hole is communicated with the inner cavity of the pipe body; and

and one end of the collecting pipe is communicated with the tail end of the pipe body along the air flow direction in the pipe body, and the other end of the collecting pipe is positioned outside the pipe body.

In one embodiment, the sand drying device further comprises an air outlet pipe, wherein the air outlet pipe is communicated with one end, away from the scattering device, of the pipe body, and one end, connected with the pipe body, of the collecting pipe is communicated with the air outlet pipe.

In one embodiment, the air outlet pipe is a U-shaped pipe, one end of the U-shaped pipe is communicated with one end of the pipe body, which is far away from the scattering device, the other end of the U-shaped pipe is located outside the pipe body, and the opening side of the U-shaped groove formed by the U-shaped pipe faces the bottom end of the pipe body.

In one embodiment, the sand drying device comprises a plurality of collecting pipes, and the collecting pipes are arranged at intervals along the circumferential direction of the pipe body.

The disclosure also provides a sand drying system, which comprises a feeding assembly, a hot air conveying member and the sand drying device according to any one of the embodiments of the disclosure;

the feeding assembly is communicated with the feeding port;

the hot air conveying piece is communicated with the air inlet.

In one embodiment, the feed assembly includes a bin, a metering member, and a transfer member;

the outlet end of the storage bin is positioned above the metering piece, the position of the metering piece corresponds to the position of the starting end of the conveying piece, and the position of the tail end of the conveying piece corresponds to the position of the feeding hole.

In one embodiment, the feed assembly further comprises a feed valve for controlling the amount of feed, the feed valve being disposed between the end of the transfer member and the feed port.

In one embodiment, the sand drying system further comprises a waste heat recovery piece, a dust collector and a first fan;

the collecting pipe is provided with a collecting port, the waste heat recovery piece is communicated with the collecting port through a pipeline, a smoke outlet on the waste heat recovery piece is communicated with an air inlet on the dust collector, an air outlet on the dust collector is communicated with the first fan, and an air outlet on the first fan is communicated with the hot air conveying piece through a pipeline.

In one embodiment, the sand drying system further comprises a discharge valve disposed on the conduit between the collection port and the waste heat recovery member.

In one embodiment, the sand drying system comprises a second fan, a collection bin and a third fan;

the second fan, the collecting bin and the third fan are communicated through pipelines in sequence, and the second fan is communicated with an air outlet on the air outlet pipe;

and a pipeline between the second fan and the collecting bin is communicated with the air inlet.

The beneficial effects of the present disclosure include:

the utility model provides a sand drying device and sand drying system, through carry the sand of initial state to the ware of scattering in the feed inlet, start the ware of scattering, the ware of scattering will be with the whole smash into the tiny particle of the great sand piece of volume, simultaneously carry the air inlet chamber of scattering to the ware with outside hot-blast through the air intake, because air inlet chamber and feed cylinder intercommunication, outside hot-blast enters into in the feed cylinder, at this moment, the tiny particle sand after being smashed by the ware in the feed cylinder is quick dry in the ware of scattering, the effect of dry sand after the air current loops through the discharge gate of ware, the inner chamber of body after get into to collecting the pipe. The device is because the large sand lump of volume can be all smashed into the tiny particle shape with the ware of scattering, has effectively eliminated the great sand lump of volume that exists among the stoving process to make sand surface can fully contact with hot-blast, and then make whole sand all can be under hot-blast effect fast drying, stoving effectual, avoid appearing the great sand lump of volume when the stoving, inside still has the phenomenon of moisture.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a sand drying device according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a sand drying system according to an embodiment of the present disclosure.

The figures are labeled as follows:

1. a tube body; 2. a feed inlet; 3. an air inlet; 4. a scattering device; 5. a collection pipe; 501. collecting port; 6. an air outlet pipe; 7. a storage bin; 8. a metering member; 9. a transfer member; 10. a feed valve; 11. a hot air conveying member; 12. a discharge valve; 13. a waste heat recovery member; 14. a dust collector; 15. a first fan; 16. a second fan; 17. a collecting bin; 18. and a third fan.

Detailed Description

In order that the above-recited objects, features and advantages of the present disclosure will become more readily apparent, a more particular description of the disclosure will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. The present disclosure may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the disclosure, and therefore the disclosure is not to be limited to the specific embodiments disclosed below.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.

In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The sand drying device that this disclosure provided not only can be used to dry sand in the concrete application, also can dry other particulate object, for example: silicon, coal dust, etc., the following description of the present disclosure will be given by way of example only.

As shown in fig. 1, in one embodiment of the present disclosure, there is provided a sand drying device, which includes a pipe body 1, a feed inlet 2, an air inlet 3, a diffuser 4, and a collecting pipe 5, wherein the feed inlet 2, the air inlet 3, and the diffuser 4 are all disposed on the pipe body 1, and at the same time,

be provided with air inlet chamber, feed cylinder and discharge gate on the ware 4 of scattering, this ware 4 of scattering is used for scattering the sand that gets into in the feed cylinder, the one end and the air inlet chamber intercommunication of feed cylinder, the other end and the discharge gate intercommunication of feed cylinder, moreover, air inlet chamber and air intake 3 intercommunication, feed cylinder and feed inlet 2 intercommunication, the inner chamber intercommunication of discharge gate and body 1, the one end and the body 1 of collecting pipe are along the terminal intercommunication of body internal air flow direction, the other end of collecting pipe 5 is located the outside of body 1.

Specifically, the breaker 4 in the present disclosure further includes a stirring blade and a motor, wherein the stirring blade is disposed in the feeding cylinder, the motor is disposed outside the feeding cylinder, and a connection shaft on the stirring blade passes through the feeding cylinder and is connected with an output shaft of the motor. As shown in fig. 1, the upper end of the collecting pipe 5 is communicated with the tail end of the pipe body 1 along the air flow direction in the pipe body, the lower end of the collecting pipe 5 is positioned outside the pipe body 1, and a collecting port 501 is formed in the lower end of the collecting pipe 5.

When the sand stirring device is used, as shown in fig. 1, after sand in an initial state is conveyed to the feeding barrel in the scattering device 4 by the aid of the feeding port 2, the motor on the scattering device 4 is started, the motor drives the stirring blades to rotate, the stirring blades can completely pulverize sand blocks with larger volumes into small particles, meanwhile, external hot air is conveyed to the air inlet cavity of the scattering device 4 through the air inlet 3, at the moment, the hot air flows into the feeding barrel due to the fact that the air inlet cavity is communicated with the feeding barrel, the pulverized small particles in the feeding barrel are quickly dried, and the feeding barrel is communicated with the discharging port, so that the dried sand sequentially passes through the discharging port and the inner cavity of the pipe body 1 and then enters the collecting pipe 5 under the action of air flow formed by the hot air, and finally is conveyed to the outside through the collecting pipe 501 on the collecting pipe 5. The device is because the large sand lump of volume can be all smashed into the tiny particle shape with the ware of scattering, has effectively eliminated the great sand lump of volume that exists among the stoving process to make sand surface can fully contact with hot-blast, and then make whole sand all can be under hot-blast effect fast drying, stoving effectual, avoid appearing the great sand lump of volume when the stoving, inside still has the phenomenon of moisture.

In some embodiments, when sand is transported into the collection pipe 5 from bottom to top along the pipe 1 as in fig. 1 under the action of the air flow, in order to facilitate the discharge of the air flow generated in the pipe 1, the sand drying apparatus in the present disclosure further includes an air outlet pipe 6, the air outlet pipe 6 is communicated with an end of the pipe 1 away from the diffuser 4, and an end of the collection pipe 5 connected with the pipe 1 is communicated with the air outlet pipe 6.

When the sand is conveyed into the collection pipe 5 from bottom to top along the pipe body 1 in fig. 1 under the action of air flow, the air flow in the pipe body 1 flows out of the air outlet pipe 6 after flowing to the top end of the pipe body 1, so that the air flow in the pipe body 1 is conveniently discharged.

Further, since the air flow in the pipe body 1 contains sand grains, when the air flow flows out from the air outlet pipe 6, in order to avoid that part of sand grains are discharged from the air outlet pipe 6, as shown in fig. 1, the air outlet pipe 6 in the present disclosure is a U-shaped pipe, one end of the U-shaped pipe is communicated with one end of the pipe body 1 away from the diffuser 4, the other end of the U-shaped pipe is located outside the pipe body 1, and the opening side of the U-shaped groove formed by the U-shaped pipe faces the bottom end of the pipe body 1.

Specifically, the air outlet pipe 6 in this embodiment is a U-shaped pipe as a whole, and the U-shaped pipe mounting structure is shown in fig. 1. Because the open side of the U-shaped groove formed by the U-shaped pipe faces the bottom end of the pipe body 1, after the air flow flows to the upper end of the pipe body 1, the air flow can continue to flow in the U-shaped pipe, at the moment, when the air flow flows to the bending part on the U-shaped pipe, the force of sand grains in the air flow is gradually reduced, at the moment, the sand grains flow into the collecting pipe 5 from the U-shaped pipe under the action of gravity, and the air flow is discharged from the other end of the U-shaped pipe after passing through the bending part on the U-shaped pipe, so that the sand grains in the air flow are prevented from being discharged from the air outlet pipe 6.

In some embodiments, in order to improve the collection efficiency of the dried sand grains, as shown in fig. 1, the sand drying apparatus in the present disclosure includes a plurality of collection pipes 5, and the plurality of collection pipes 5 are disposed at intervals along the circumferential direction of the pipe body 1.

Because there are a plurality of collecting pipes 5 in the sand drying device in this disclosure, so sand grain after the stoving enters into the collecting pipe 5 of different positions behind the discharge gate of diffuser 4, the inner chamber of body 1 under the effect of the air current that hot-blast formed, just can collect a large amount of sand grains in a plurality of collecting pipes 5, has effectively improved collection efficiency.

As shown in fig. 2, the present disclosure further provides a sand drying system, including a feeding assembly, a hot air conveying member 11, and a sand drying device according to any one of the embodiments of the present disclosure, wherein the feeding assembly is in communication with the feed inlet 2, and the hot air conveying member 11 is in communication with the air inlet 3.

Specifically, the hot air delivery member 11 may be a hot air stove, and may be specifically designed according to an actual system, which is not limited herein. When the sand block crusher is used, sand blocks in an initial state are conveyed into the feed inlet 2 through the feeding assembly, then the sand blocks enter a feed cylinder of the crusher 4, meanwhile, hot air is conveyed into an air inlet cavity on the crusher 4 through the air inlet 3 by the hot air conveying part 11, the crusher 4 is started, the crusher 4 can crush all the sand blocks with larger volumes into small particles, the crushed small particles of sand can be quickly dried in the crusher 4, the dried sand sequentially passes through a discharge hole of the crusher 4 and an inner cavity of the pipe body 1 under the action of air flow formed by hot air and then enters the collecting pipe 5, and finally the sand is conveyed to the outside from the collecting hole 501 on the collecting pipe 5. The sand drying system provided by the disclosure has high overall automation degree and effectively improves the working efficiency.

In some embodiments, to facilitate determining the weight of the initial state sand mass delivered into the feed port 2, as shown in fig. 2, the feeding assembly in the present disclosure includes a bin 7, a metering member 8, and a conveying member 9, wherein an outlet end of the bin 7 is located above the metering member 8, a position of the metering member 8 corresponds to a position of a start end of the conveying member 9, and an end position of the conveying member 9 corresponds to a position of the feed port 2. It should be noted that the structure of the feeding assembly in the embodiments of the present disclosure is merely an example, and in other alternatives, other structures may be adopted, for example, the feeding assembly includes a chain conveyor. The specific structure of the feeding assembly is not particularly limited in the present disclosure, as long as the above structure can achieve the object of the present disclosure.

Specifically, the weighing unit 8 may be a weighing scale, and the conveying unit 9 may be a belt conveyor formed of a belt. When the sand block weighing device is used, the discharge hole at the bottom of the storage bin 7 is opened, so that the sand blocks in the storage bin 7 fall into the corresponding weighing piece 8, and when the weight of the weighed sand blocks on the weighing piece 8 reaches a preset value, the discharge hole on the storage bin 7 is closed. Then, all the sand blocks on the metering member 8 are transferred to the conveying member 9, the conveying member 9 is started, and the conveying member 9 conveys the corresponding sand blocks into the feed inlet 2.

In some embodiments, to facilitate control of how much sand is delivered from the transfer member 9 into the feed port 2, as shown in fig. 2, the feed assembly in the present disclosure further includes a feed valve 10 for controlling the amount of feed, the feed valve 10 being disposed between the end of the transfer member 9 and the feed port 2.

Specifically, the feeding valve 10 in the present disclosure may be a solenoid valve, and the communication or disconnection between the end of the transfer member 9 and the feeding port 2 may be controlled by controlling the opening or closing of the solenoid valve. In use, when it is not necessary to feed the sand cake on the transfer member 9 into the feed port 2, it is only necessary to close the feed valve 10.

In some embodiments, since the sand discharged from the collecting port 501 contains waste heat, the waste heat is conveniently recycled, and as shown in fig. 2, the sand drying system in the present disclosure further includes a waste heat recycling member 13, a dust collector 14, and a first fan 15; wherein, waste heat recovery spare 13 passes through the pipeline and collects material mouth 501 intercommunication, and the flue gas export on the waste heat recovery spare 13 communicates with the air inlet on the dust collector 14, and the gas outlet on the dust collector 14 communicates with first fan 15, and the air outlet on the first fan 15 passes through the pipeline and communicates with hot air delivery spare 11.

Specifically, the waste heat recovery member 13 is an existing waste heat recovery device, which will not be described here. The dust collector 14 can be a bag-type dust collector or a cyclone dust collector, and can be specifically selected according to actual products.

When the device is used, after sand enters the waste heat recovery device from the collecting port 501 through a pipeline, air in the pipe body 1 also enters the waste heat recovery device, the waste heat recovery device recovers and utilizes residual heat in low-temperature moisture-containing gas in the air, and meanwhile, the waste heat recovery device discharges the dried sand and then collects and utilizes the dried sand.

The flue gas generated in the operation of the waste heat recovery device enters the dust collector 14 through a pipeline, and then the flue gas collected by the dust collector 14 is conveyed to the air inlet of the hot air conveying member 11 through a pipeline by the first fan 15 as combustion-supporting air.

In some embodiments, to facilitate control of the amount of sand particles delivered from the collection port 501 to the waste heat recovery member 13, as shown in fig. 2, the sand drying system of the present disclosure further includes a discharge valve 12, the discharge valve 12 being disposed on the conduit between the collection port 501 and the waste heat recovery member 13.

Specifically, the discharge valve 12 may be an electromagnetic valve, and the connection or disconnection of the pipeline between the collecting port 501 and the waste heat recovery member 13 may be conveniently controlled by controlling the opening or closing of the electromagnetic valve. In use, the solenoid valve is first opened, at which point the conduit between the collection port 501 and the waste heat recovery member 13 communicates. When the amount of sand flowing into the waste heat recovery member 13 from the collection port 501 has reached a preset value, the electromagnetic valve is closed, and at this time, the pipe between the collection port 501 and the waste heat recovery member 13 is disconnected, and sand cannot flow into the waste heat recovery member 13 from the collection port 501.

In some embodiments, for convenience in collecting and utilizing the air exhausted from the air outlet pipe 6, as shown in fig. 2, the sand drying system in the present disclosure includes a second fan 16, a collecting bin 17, and a third fan 18, wherein the second fan 16, the collecting bin 17, and the third fan 18 are sequentially communicated through pipes, and the second fan 16 is communicated with an air outlet on the air outlet pipe 6; the pipeline between the second fan 16 and the collection bin 17 is communicated with the air inlet 3.

In particular, the collection bin 17 may be an existing flue gas collector, which is not described here. When the air-conditioner is in use, after being discharged from the air outlet pipe 6, the second fan 16 is started, the discharged air is conveyed into the flue gas collector through the pipeline by the second fan 16, fine powder in the air is separated by the flue gas collector, and hot waste gas generated in the flue gas collector is discharged through the third fan 18.

Meanwhile, when the second fan 16 delivers the discharged air into the flue gas collector through a pipe, as shown in fig. 2, a part of the air is delivered to the air inlet 3 through the pipe to be re-introduced into the diffuser 4 as dry hot air for operation. The whole structure not only purifies the air discharged from the air outlet pipe 6, but also makes secondary use of the discharged air, thereby reducing the cost.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples represent only a few embodiments of the present disclosure, which are described in more detail and detail, but are not to be construed as limiting the scope of the disclosure. It should be noted that variations and modifications can be made by those skilled in the art without departing from the spirit of the disclosure, which are within the scope of the disclosure. Accordingly, the scope of protection of the present disclosure should be determined by the following claims.

Claims (10)

1. A sand drying apparatus, comprising:

a tube body (1);

the feeding port (2) is arranged on the pipe body (1);

the air inlet (3) is formed in the pipe body (1);

the device comprises a scattering device (4), wherein the scattering device (4) is arranged on a pipe body (1), an air inlet cavity, a feeding cylinder and a discharge hole are formed in the scattering device (4), the scattering device (4) is used for scattering sand entering the feeding cylinder, one end of the feeding cylinder is communicated with the air inlet cavity, the other end of the feeding cylinder is communicated with the discharge hole, the air inlet cavity is communicated with an air inlet (3), the feeding cylinder is communicated with the feed hole (2), and the discharge hole is communicated with an inner cavity of the pipe body (1); and

and one end of the collecting pipe (5) is communicated with the tail end of the pipe body (1) along the air flow direction in the pipe body (1), and the other end of the collecting pipe (5) is positioned outside the pipe body (1).

2. A sand drying apparatus according to claim 1, further comprising an air outlet pipe (6), the air outlet pipe (6) being in communication with an end of the pipe body (1) remote from the diffuser (4), and an end of the collecting pipe (5) connected to the pipe body (1) being in communication with the air outlet pipe (6).

3. The sand drying device according to claim 2, wherein the air outlet pipe (6) is a U-shaped pipe, one end of the U-shaped pipe is communicated with one end of the pipe body (1) far away from the scattering device (4), the other end of the U-shaped pipe is located outside the pipe body (1), and an opening side of a U-shaped groove formed by the U-shaped pipe faces to the bottom end of the pipe body (1).

4. A sand drying apparatus according to claim 1, characterized in that the sand drying apparatus comprises a plurality of the collecting pipes (5), the plurality of collecting pipes (5) being arranged at intervals along the circumference of the pipe body (1).

5. A sand drying system, characterized by comprising a feeding assembly, a hot air conveying member (11) and a sand drying device according to any one of claims 1-4;

the feeding assembly is communicated with the feeding port (2);

the hot air conveying piece (11) is communicated with the air inlet (3).

6. A sand drying system according to claim 5, characterized in that the feed assembly comprises a silo (7), a metering member (8) and a transfer member (9);

the outlet end of the storage bin (7) is located above the metering piece (8), the position of the metering piece (8) corresponds to the position of the starting end of the conveying piece (9), and the tail end of the conveying piece (9) corresponds to the position of the feeding hole (2).

7. A sand drying system according to claim 6, characterized in that the feed assembly further comprises a feed valve (10) for controlling the amount of feed, the feed valve (10) being arranged between the end of the conveyor (9) and the feed opening (2).

8. A sand drying system according to claim 5, further comprising a waste heat recovery element (13), a dust collector (14) and a first fan (15);

be provided with on collecting pipe (5) and receive material mouth (501), waste heat recovery spare (13) through the pipeline with collect material mouth (501) intercommunication, just flue gas outlet on waste heat recovery spare (13) with air inlet on dust collector (14) communicates, the gas outlet on dust collector (14) with first fan (15) intercommunication, the air outlet on first fan (15) through the pipeline with hot air transport spare (11) intercommunication.

9. A sand drying system according to claim 8, further comprising a discharge valve (12), the discharge valve (12) being arranged on a pipe between the collecting port (501) and the waste heat recovery member (13).

10. A sand drying system according to claim 5, characterized in that the sand drying system comprises a second fan (16), a collection bin (17) and a third fan (18);

the second fan (16), the collecting bin (17) and the third fan (18) are communicated through pipelines in sequence, and the second fan (16) is communicated with an air outlet on an air outlet pipe (6) on the sand drying device;

the pipeline between the second fan (16) and the collecting bin (17) is communicated with the air inlet (3).