阅读说明：本技术 一种沙漠砂的加热系统及方法 (Heating system and method for desert sand ) 是由 胡站伟 宋记峰 柳庆林 何苗 王闻墨 张可心 于 2021-10-13 设计创作，主要内容包括：本发明适用于铸造造型技术领域,提供了一种沙漠砂的加热系统及方法,沙漠砂的加热系统,包括聚光组件、光传输组件、砂融组件,所述聚光组件将收集的光通过光传输组件传递给砂融组件；所述砂融组件包括熔融装置和分级装置；所述分级装置可将沙漠砂分为粗砂和细砂；所述熔融装置包括熔融池和刮板部件,所述细砂可被第一传输件运输至熔融池内,所述熔融池表面形成有凹槽,所述粗砂可被第二传输件运输流入凹槽中；所述刮板部件转动安装于所述熔融池上,且位于凹槽上方。本发明的方法使得聚光和砂融在空间位置上实现了互相独立自由,实用性强,在工程上可以广泛使用,加热是在一个比较密闭的环境中进行,热量损失的少,加热时间短。(The invention is suitable for the technical field of casting modeling, and provides a heating system and a method for desert sand, wherein the heating system for the desert sand comprises a light condensing assembly, a light transmission assembly and a sand melting assembly, wherein the light condensing assembly transmits collected light to the sand melting assembly through the light transmission assembly; the sand melting assembly comprises a melting device and a grading device; the grading device can divide the desert sand into coarse sand and fine sand; the melting device comprises a melting tank and a scraper component, the fine sand can be conveyed into the melting tank by the first conveying piece, a groove is formed in the surface of the melting tank, and the coarse sand can be conveyed into the groove by the second conveying piece; the scraper component is rotatably arranged on the melting tank and is positioned above the groove. The method of the invention realizes mutual independence and freedom of light condensation and sand fusion on spatial positions, has strong practicability, can be widely used in engineering, and has the advantages of less heat loss and short heating time because the heating is carried out in a relatively closed environment.)

1. The heating system for the desert sand is characterized by comprising a light-gathering component (10), a light transmission component (20) and a sand melting component (30), wherein the light-gathering component (10) transmits collected light to the sand melting component (30) through the light transmission component (20);

the sand melting assembly (30) comprises a melting device (31) and a grading device (32);

the grading device (32) can divide the desert sand into coarse sand and fine sand;

the melting device (31) comprises a melting tank (311) and a scraper component (312), the fine sand can be transported into the melting tank (311) by a first transporting component (321), the surface of the melting tank (311) is provided with a groove (31111), and the coarse sand can be transported to flow into the groove (31111) by a second transporting component (322);

The scraper component (312) is rotatably arranged on the melting tank (311) and is positioned above the groove (31111).

2. A heating system for desert sand as claimed in claim 1, characterized in that the surface of the groove (31111) of the melting tank (311) is provided with slits.

3. The desert sand heating system as claimed in claim 1, wherein said scraper member (312) comprises: a driving device (3121), a scraper body (3122), a fixing member (3123); the scraper blade body (3122) is mounted on the melting tank (311) through a fixing piece (3123), the fixing piece (3123) is connected with a driving device (3121), and the driving device (3121) can drive the fixing piece (3123) to rotate.

4. A heating system for desert sand as claimed in claim 1 or 2, characterized in that the melting tank (311) comprises an inner and an outer shell (3111), between which (3111) insulation is filled.

5. A heating system for desert sand as claimed in claim 1, wherein said sand-melting assembly (30) further comprises feeding means (33) and transport means (34);

the classification device (32) is located between the feeding device (33) and the transport device (34); the feeding device (33) is fixedly connected with the grading device (32), and the outlet end of the melting device (31) is connected with the conveying device (34).

6. A heating system for desert sand as claimed in claim 1, characterized in that said light-focusing assembly (10) comprises: the device comprises a light condensing device (11), a supporting device (12) and a base (13);

the lower end of the supporting device (12) is rotatably installed with the base (13), the upper end of the supporting device (12) is installed with the light condensing device (11), and the light condensing device (11) can swing relative to the supporting device (12).

7. A heating system for desert sand as claimed in claim 6, characterized in that said light-gathering means (11) comprise: a lens (111), a carrier (112), and a light-gathering box (113); the top fixed mounting who bears frame (112) has lens (111), bear the lower extreme of frame (112) and install spotlight box (113), lens (111) with spotlight box (113)'s position corresponds.

8. A heating system for desert sands as claimed in claim 1, characterized in that said light transmission assembly (20) comprises: optical fiber (21) and leaded light stick (22), the one end and the spotlight box (113) of optical fiber (21) are connected, and the other end is connected with leaded light stick (22), leaded light stick (22) insert in shell body (3111).

9. A desert sand heating system as claimed in claim 8, wherein said light guide rod (22) is made of quartz.

10. A method for heating desert sand using the heating system for desert sand as claimed in any one of claims 1 to 9, comprising the steps of:

step S10: adjusting the light-gathering component (10) to face the sun to acquire light energy; delivering light energy to the melt pool (311) through the light delivery assembly (20);

step S20: placing the desert sand into a feeding device (33), wherein the desert sand enters a grading device (32) through the feeding device (33), and the desert sand is divided into coarse sand and fine sand through the grading device (32);

step S30: fine sand is conveyed into a melting tank (311) through a first conveying member (321) to be sintered, coarse sand is conveyed into a groove (31111) of the melting tank (311) through a second conveying member (322), and the sintered fine sand is in contact with the coarse sand;

step S40: the scraper body (3122) above the groove (31111) is controlled to rotate by a driving device (3121), coarse sand is uniformly contacted with the fine sand after sintering, and the rotational speed of the scraper body (3122) is controlled to generate coarse sand with a target size.

Technical Field

The invention relates to the field of casting sand, in particular to a heating system and a heating method for desert sand.

Background

At present, the damage of human beings to the nature is more and more serious, the desertification is more and more serious, the desert needs to be controlled urgently, and the development of the sand industry is an effective way for solving the current desertification problem. Therefore, in the desert and the area near the desert, the desert sand is used as the raw material and is prepared into the aggregate which can be used in the building industry through proper heating treatment, and the method has important significance for the sustainable development of the society.

As disclosed in patent CN 108160916A: the invention relates to a precoated sand for special purposes prepared from desert sand and a production process of the precoated sand, belonging to the field of molding materials. The invention provides a preparation method of high-strength precoated sand for special purposes, which comprises a pretreatment method of desert raw sand, and the mass component ratios of a binder, a curing agent, a lubricant, a reinforcing and toughening agent and other additives. The precoated sand provided by the invention has the characteristics of high strength, high toughness and high hardening and crusting speed, and is a production raw material suitable for special purposes in the manufacturing industry of breathable flowerpots using sand as a raw material. The composition ratio of each component of the precoated sand is properly adjusted, and the precoated sand is also suitable for the field of casting production industry. The invention adopts the desert sand as the raw material and adopts the dry pretreatment process, thereby saving water and energy, effectively reducing the production cost of the precoated sand and having wide market prospect.

However, the heating of the desert sand in the prior art is performed in an open environment, and has the following problems: the heat dissipation is fast during heating, the heat loss is serious, and the sintering time is long and the efficiency is low; the heated sand particles are not well controlled to a desired target size and cannot meet the building requirements.

Disclosure of Invention

The invention aims to provide a heating system and a heating method for desert sand, which are used for solving the technical problems in the prior art.

The invention provides a heating system for desert sand, which comprises a light condensing assembly, a light transmission assembly and a sand melting assembly, wherein the light condensing assembly transmits collected light to the sand melting assembly through the light transmission assembly;

the sand melting assembly comprises a melting device and a grading device;

the grading device can divide the desert sand into coarse sand and fine sand;

the melting device comprises a melting tank and a scraper component, the fine sand can be conveyed into the melting tank by the first conveying piece, a groove is formed in the surface of the melting tank, and the coarse sand can be conveyed into the groove by the second conveying piece;

the scraper component is rotatably arranged on the melting tank and is positioned above the groove.

Further, a gap is arranged on the surface of the groove of the melting pool.

Further, the squeegee member includes: the scraper comprises a driving device, a scraper body and a fixing piece; the scraper blade body is arranged on the melting tank through a fixing piece, the fixing piece is connected with a driving device, and the driving device can drive the fixing piece to rotate.

Further, the melting pool comprises an inner shell and an outer shell, and heat insulation materials are filled between the inner shell and the outer shell.

Further, the sand melting assembly also comprises a feeding device and a conveying device;

the grading device is positioned between the feeding device and the conveying device; the feeding device is fixedly connected with the grading device, and the outlet end of the melting device is connected with the conveying device.

Further, the light condensing assembly includes: the device comprises a light gathering device, a supporting device and a base;

the lower end of the supporting device is rotatably installed with the base, the upper end of the supporting device is installed with the light condensing device, and the light condensing device can swing relative to the supporting device.

Further, the light condensing device includes: the lens, the bearing frame and the light gathering box; bear the top fixed mounting of frame and have lens, bear the lower extreme of frame and install the spotlight box, lens with the position of spotlight box corresponds.

Further, the optical transmission assembly includes: the optical fiber and the light guide rod, one end of the optical fiber is connected with the light gathering box, the other end of the optical fiber is connected with the light guide rod, and the light guide rod is inserted into the outer shell.

Further, the material of the light guide rod is quartz.

The invention also provides a heating method of the desert sand, which adopts the heating system of the desert sand and comprises the following steps:

step S10: adjusting the light condensing assembly to face the sun to obtain light energy; transmitting light energy to the melt pool through the light transmission assembly;

step S20: placing the desert sand into a feeding device, wherein the desert sand enters a grading device through the feeding device, and the desert sand is divided into coarse sand and fine sand through the grading device;

step S30: the fine sand is transported to a melting pool through a first transporting piece to be sintered, and the coarse sand is transported to a groove of the melting pool through a second transporting piece to be contacted with the sintered fine sand;

step S40: the scraper body positioned above the groove is controlled to rotate through the driving device, so that coarse sand is uniformly contacted with the sintered fine sand, and the rotating speed of the scraper body is controlled to generate coarse sand with a target size.

Compared with the prior art, the invention at least has the following technical effects:

(1) In the embodiment of the invention, the light condensing assembly and the sand melting assembly are arranged into two independent structures, the light condensing assembly transmits solar energy to the sand melting assembly through the optical fiber, and the optical fiber adopted in the embodiment is flexible and can transmit light in a bending state, so that the working state of the sand melting assembly is not influenced when the light condensing assembly tracks the position of the sun, the light condensing assembly and the sand melting assembly are independent and free from each other in spatial position, great effect is realized on engineering, the practicability is high, and the sand melting assembly can be widely used in engineering.

(2) In the prior art, when desert sand is heated, the heating is usually carried out in an open environment, which can cause that the heat of a heating device is quickly dissipated and the heat loss is serious in the heating process, so that the heating effect on the desert sand is not ideal; in the embodiment of the invention, the melting tank is adopted in the sand melting assembly to heat the fine sand, compared with the prior art, the heating is carried out in a relatively closed environment, the heat loss is less, the heating time is short, and the heating effect is good because sunlight is adopted, the heat source is constant.

(3) In the embodiment of the invention, the coarse sand is combined with the melted fine sand in the groove, and the amount of the melted fine sand combined with each surface of the coarse sand is relatively uniform through the movement of the scraper; the slew velocity of scraper blade can be controlled through drive arrangement, the scraper blade pivoted is fast, then the grit is few with the fine sand volume of combining after the melting in the recess, the grit size that obtains is less, slew velocity when the scraper blade is slow, the time that the grit dwells in the recess is long, it is more with the fine sand volume of combining after the melting, the grit size that obtains is great, therefore, slew velocity through the control scraper blade, and then can decide the size of the grit that generates, the grit size that uses when satisfying the building in the engineering.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an overall schematic view of a heating system of the present invention;

FIG. 2 is a schematic view of a light focusing assembly of the present invention;

FIG. 3 is a schematic view of an optical transmission assembly of the present invention;

FIG. 4 is a schematic view of a sand-melt assembly of the present invention;

FIG. 5 is a schematic view of a classifier according to the present invention;

FIG. 6 is a schematic view of a melting apparatus of the present invention;

FIG. 7 is a schematic view of a molten pool in the present invention;

FIG. 8 is a flow chart of a heating method in the present invention.

10-a light-focusing assembly; 11-a light-gathering device; 111-a lens; 112-a carrier; 113-a light-gathering box; 12-a support means; 13-a base; 20-an optical transmission component; 21-an optical fiber; 22-a light guide rod; 30-a sand-melt assembly; 33-a feeding device; 32-a grading device; 325-air filtering grille; 323-a housing; 3231-fine sand outlet; 3232-coarse sand outlet; 3233-air outlet; 324-a cyclone separator; 321-a first transmission member; 322-a second transport; 31-a melting device; 311-a molten pool; 3111-an outer shell; 31111-grooves; 312-a squeegee member; 3121-a drive device; 3122-a squeegee body; 3123-a mount; 34-transport means.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the invention. The particular examples set forth below are illustrative only and are not intended to be limiting.

Example 1:

as shown in fig. 1 to 7, embodiment 1 of the present invention provides a heating system for desert sand, including a light focusing assembly 10, a light transmission assembly 20, and a sand melting assembly 30, where the light focusing assembly 10 transmits collected light to the sand melting assembly 30 through the light transmission assembly 20;

the sand melting assembly 30 comprises a melting device 31 and a grading device 32;

the grading device 32 can divide the desert sand into coarse sand and fine sand;

the melting apparatus 31 includes a melting tank 311 and a scraper member 312, the fine sand may be transported into the melting tank 311 by a first transporting member 321, a groove 31111 is formed on a surface of the melting tank 311, and the coarse sand may be transported into the groove 31111 by a second transporting member 322;

the scraper member 312 is rotatably mounted on the melt pool 311 above the groove 31111.

In the prior art, a condenser is used for heating and melting desert sand in engineering, but when a large-size optical device is generally used for tracking and focusing sunlight, the problems that a condensing focus is difficult to control accurately and a system is relatively large exist, and in addition, the good focusing effect can be better ensured only when the numerical aperture (the ratio of the diameter of a lens to the focal length of the lens) of an optical imaging system is within 1.5. On the basis, the embodiment of the invention provides a heating system for desert sand, and the adopted light-gathering component solves the technical problems in the prior art.

In the above scheme, the light condensing assembly 10 is used for converging solar light energy through the lens 111, then one end of the light transmission assembly 20 is connected with the light condensing assembly 10, the other end of the light transmission assembly is connected with the sand melting assembly 30, sunlight obtained by the light condensing assembly 10 is transmitted to the sand melting assembly 30 through the light transmission assembly 20, and continuous and stable solar energy, namely heat energy, is provided for the sand melting assembly 30, so that higher temperature is generated in the sand melting assembly 30 and used for heating desert sand, and the desert sand is melted.

Wherein the sand melting assembly 30 includes a melting device 31 and a grading device 32, sand particles in the desert are too fine and have poor grading compared with the sand in the river used in the building, and cannot be directly used as aggregate of concrete in the building, and therefore, the desert sand is conveyed to the grading device to be separated into coarse sand and fine sand, as shown in fig. 5, the grading device 32 includes: a first transfer member 321, a second transfer member 322, a housing 323, a cyclone 324, an air filter 325, the cyclone 324 is installed inside the case 323, a lower end outlet of the cyclone 324 is connected with the coarse sand outlet 3232 of the case 323, the upper end of the cyclone 324 is also provided with an outlet, after the desert sand enters the cyclone 324, heavy sand (coarse sand) will flow out of the housing from the lower outlet of the cyclone 324, light sand (fine sand) will be blown out from the upper outlet of the cyclone 324, an air filtering grille is arranged at the corresponding position below the upper end outlet of the cyclone 324, fine sand blown out from the upper end outlet of the cyclone 324 falls onto the air filtering grille 325, sieving the fine sand again, wherein the heavy fine sand slides to the bottom of the shell 323 through the air filtering grid, and the light fine sand is blown out through an air outlet 3233 in the upper part of the shell 323; the first transfer member 321 is connected to a fine sand outlet 3231 of the housing 323, and fine sand may be introduced into the melting apparatus 31 through the first transfer member 321, and coarse sand may be introduced into the melting apparatus 31 through the second transfer member 322.

The classifying device 32 may be other screening devices such as mechanical vibration screening, cyclone screening, inertial filtration screening, electrostatic separation screening, etc., as long as it can realize the classification of desert sand, and it is not limited herein, and cyclone screening is preferred in this embodiment.

Preferably, the first transmission member 321 and the second transmission member 322 are transmission pipes in this embodiment.

The melting tank 311 is shaped like a Chinese character 'ao', the recess is a groove 31111, a scraper component 312 is installed above the groove 31111, the scraper component 312 can rotate relative to the groove 31111, the fine sand from the grading device 32 flows into the melting tank through a first transmission part 321, the coarse sand flows into the groove 31111 through a second transmission part 322, when the fine sand is heated to be molten slurry in the melting tank, the fine sand flows out from the surface of the groove, the coarse sand flowing into the groove is in contact with the fine sand, the surface of the coarse sand is coated with the molten slurry-like fine sand, the size of the coarse sand is increased, and when the size of the coarse sand reaches the size of the coarse sand required by the building after the fine sand is coated on the surface of the coarse sand, the scraper scrapes the coarse sand out of the groove to obtain the coarse sand with the target size.

Therefore, according to the embodiment of the invention, sunlight is converged by the light-condensing assembly, then the converged sunlight is transmitted to the melting tank by the light transmission assembly, and the sunlight is used as a heat source to heat fine sand, so that the heating temperature is high, the heating effect is good, the efficiency is high, the resources are saved, the structure is simple, and the operability is high.

In the embodiment of the invention, the light condensing assembly and the sand melting assembly are arranged into two independent structures, the light condensing assembly transmits solar energy to the sand melting assembly through the optical fiber, and the optical fiber adopted in the embodiment is flexible and can transmit light in a bending state, so that the working state of the sand melting assembly is not influenced when the light condensing assembly tracks the position of the sun, the light condensing assembly and the sand melting assembly are independent and free from each other in spatial position, great effect is realized on engineering, the practicability is high, and the sand melting assembly can be widely used in engineering.

In the prior art, when desert sand is heated, the heating is usually carried out in an open environment, which can cause that the heat of a heating device is quickly dissipated and the heat loss is serious in the heating process, so that the heating effect on the desert sand is not ideal; in the embodiment of the invention, the melting tank is adopted in the sand melting assembly to heat the fine sand, compared with the prior art, the heating is carried out in a relatively closed environment, the heat loss is less, the heating time is short, and the heating effect is good because sunlight is adopted, the heat source is constant.

In the embodiment of the invention, the coarse sand is combined with the melted fine sand in the groove, and the amount of the melted fine sand combined with each surface of the coarse sand is relatively uniform through the movement of the scraper; the slew velocity of scraper blade can be controlled through drive arrangement, the scraper blade pivoted is fast, then the grit is few with the fine sand volume of combining after the melting in the recess, the grit size that obtains is less, slew velocity when the scraper blade is slow, the time that the grit dwells in the recess is long, it is more with the fine sand volume of combining after the melting, the grit size that obtains is great, therefore, slew velocity through the control scraper blade, and then can decide the size of the grit that generates, the grit size that uses when satisfying the building in the engineering.

Further, the surface of the groove 31111 of the melt pool 311 is provided with a slit.

In the above scheme, the surface of the groove 31111 is provided with a gap, and when the fine sand is heated to a molten state in the molten pool, the fine sand can flow out through the gap and combine with the coarse sand in the groove 31111, so that the size of the coarse sand is increased, and coarse sand of the size used in construction is obtained; the gaps on the surface of the groove can be arranged on the surface of the groove, and can also be arranged on the side surfaces of the groove, when the size of the needed coarse sand is larger, the gaps are arranged on the side surfaces of the groove, so that more molten fine sand flows out from the gaps and is combined with the coarse sand in the groove.

Further, the squeegee member 312 includes: a driving device 3121, a blade body 3122, a fixing member 3123; the scraper body 3122 is installed on the melting tank 311 through a fixing member 3123, the fixing member 3123 is connected with a driving device 3121, and the driving device 3121 can drive the fixing member 3123 to rotate.

In the above scheme, the scraper component 312 is integrally installed on the melting tank, the fixing member 3123 is installed on the melting tank through a fixing frame, the scraper body 3122 is fixedly installed on the fixing member, in this embodiment, the fixing member is a fixing rod, and the driving device drives the fixing rod to rotate, so as to drive the scraper body to rotate; the running speed of the driving device is controlled, so that the rotating speed of the scraper body is controlled, and the combination amount of coarse sand and molten fine sand can reach the size of the coarse sand required by engineering construction.

Further, the molten pool 311 includes an inner shell (shown) and an outer shell 3111, and an insulation material is filled between the inner shell and the outer shell 3111.

In the above scheme, the melting tank 311 is a double-layer structure and is formed by connecting an inner shell and an outer shell 3111, a gap is formed between the inner shell and the outer shell 3111, a heat insulating material is filled in the gap, and the gap is vacuumized to reduce heat exchange between the shells, reduce heat loss of sunlight transmitted to the melting tank 311, and influence heating effect.

Preferably, the inner cavity of the outer case 3111 of the melt pool 311 is a high-reflectivity metal coating, and the outer cavity of the inner case of the melt pool 311 is covered with a high-conversion-rate photothermal conversion material, so that the light guide rod 22 in the light transmission member 20 reduces heat loss when embedded in the outer case 3111.

Further, the sand-melting assembly 30 further comprises a feeding device 33 and a conveying device 34;

the grading device 32 is located between the feeding device 33 and the transportation device 34; the feeding device 33 is fixedly connected with the grading device 32, and the outlet end of the melting device 31 is connected with the conveying device 34.

In the above scheme, the desert sand is firstly put into the feeding device 33, flows into the grading device 32 through the feeding device 33, is divided into coarse sand and fine sand in the grading device 32, the fine sand enters the melting tank 311 of the melting device 31 through the first conveying member 321, the coarse sand enters the groove of the outer shell 3111 of the melting tank 311 through the second conveying member 322, is combined with the molten fine sand in the melting tank 311, then the coarse sand combined with the molten fine sand is scraped out of the groove through the scraper body, and the scraped coarse sand is transported to a destination through the transporting device 34.

Preferably, the transportation device 34 may be a transportation pipe, a transportation plate, or other transportation devices as long as transportation of the coarse sand is achieved, and is not limited herein.

Preferably, the feeding device 33 and the classifying device may be connected by means of welding, a threaded nut, and the like.

Preferably, the melting device 31 can be detachably connected to the transport device 34.

Further, the light concentration assembly 10 includes: the light gathering device 11, the supporting device 12 and the base 13;

the lower end of the supporting device 12 is rotatably mounted on the base 13, the upper end of the supporting device 12 is mounted on the light gathering device 11, and the light gathering device 11 can swing relative to the supporting device 12.

In the above solution, the upper end of the base 13 is connected to the supporting device 12, the supporting device 12 is U-shaped and can rotate at any angle in a horizontal plane relative to the base, the two ends of the light gathering device 11 are rotatably connected to the U-shaped supporting device 12, and the light gathering device 11 can swing at any angle on the U-shaped supporting device.

In this embodiment, the light condensing assembly 10 adopts a two-axis tracking system, and adjusts the light condensing device 11 to perform high-precision tracking on the sun azimuth in real time, wherein the tracking precision is better than 0.1 °.

Further, the light condensing device 11 includes: a lens 111, a carrier 112, a light-gathering box 113; the top of the bearing frame 112 is fixedly provided with a lens 111, the lower end of the bearing frame 112 is provided with a light-gathering box 113, and the positions of the lens 111 and the light-gathering box 113 correspond.

In the above scheme, the lens 111 may be fixedly mounted on the bearing frame 112 in a manner of screws and nuts, at least a portion of the light collecting box 113 penetrates through the bearing frame 112, the upper end of the light collecting box 113 receives light energy, the lower end of the light collecting box 113 is connected with the optical fiber 21 to transmit the light, and the lens 111 collects sunlight and then collects the sunlight to the upper surface of the light collecting box 113, so that the position of the light collecting box 113 needs to be set corresponding to the position of the lens 111, and the light collected by the lens 111 is accurately received, thereby avoiding light waste.

In the embodiment of the present invention, a plurality of lenses 111 may be arranged, and are installed on the carrier 112 at intervals, the lower end of each lens 111 is correspondingly installed with a light-gathering box 113, the lower end of each light-gathering box 113 is connected with an optical fiber, collected light is transmitted to the light guide rods 22 through the optical fiber 21, and the plurality of light guide rods 22 simultaneously irradiate the same position in the fine sand in the melting tank 311, so as to increase the power of the system.

Preferably, the lens 111 in the embodiment of the present invention is a fresnel lens, and the fresnel lens may be made of glass-silica gel or other light-transmitting materials such as PMMA; the focal length of the Fresnel lens is 1-3 times of the diameter.

Further, the optical transmission component 20 includes: the optical fiber 21 and the light guide rod 22, the optical fiber 21 is connected with the light gathering box 113 at one end, and connected with the light guide rod 22 at the other end, and the light guide rod 22 is inserted into the outer housing 3111.

In the above scheme, one end of the optical fiber 21 is placed at the light-gathering outlet of the light-gathering box 113, and is opposite to the light-gathering port; the end of the optical fiber 21 is adjusted to be aligned with the outlet of the light-gathering box 113, so that the rapid on-off of light transmission is realized, an additional switch device is not required, and the structural complexity is reduced.

One end of the light guide rod 22 is connected to the optical fiber 21, and the other end is inserted into the outer case 3111 of the melt tank 311, and then the fine sand in the melt tank 311 is irradiated and sintered, and the light guide rod 22 can be inserted into any position of the outer case 3111.

Preferably, in the embodiment of the present invention, the material of the optical fiber 21 is quartz, the optical fiber 21 is formed by a plurality of quartz optical fiber bundles, and the diameter of the single quartz optical fiber is 0.1mm to 0.3 mm.

Further, the material of the light guide rod 22 is quartz.

Preferably, in the embodiment of the present invention, the light guide rod 22 is made of quartz glass, the cross-sectional shape of the light guide rod may be a circular shape, a hexagonal shape, a trapezoidal shape, or other variable shapes, and the light guide rod with a hexagonal cross-section is preferred in the present invention in combination with the light uniformity and the difficulty of the process.

Example 2:

as shown in fig. 8, embodiment 2 of the present invention provides a method for heating desert sand, where the method uses the above-mentioned heating system for desert sand, and includes the following steps:

step S10: adjusting the light condensing assembly 10 to face the sun to obtain light energy; transferring light energy to the melt pool 311 by the light delivery assembly 20;

step S20: placing the desert sand into a feeding device 33, wherein the desert sand enters a grading device 32 through the feeding device 33, and the desert sand is divided into coarse sand and fine sand through the grading device 32;

step S30: fine sand is transported into the melting tank 311 through the first transporting member 321 to be sintered, coarse sand is transported into the groove 31111 of the melting tank 311 through the second transporting member, and the sintered fine sand is in contact with the coarse sand;

step S40: the rotation of the scraper body 3122 above the groove 31111 is controlled by the driving device 3121, the coarse sand is brought into uniform contact with the fine sand after sintering, and the rotation speed of the scraper body 3122 is controlled to produce coarse sand of a target size.

In the scheme, the light condensing system 10 is placed at a proper position, then the lens 111 in the light condensing device 11 faces the sun by adjusting the rotation angle of the support device 12 and the swing angle of the light condensing device 11 on the support device 12, the solar light energy is obtained at the maximum angle, the lens 111 converges the sunlight into the light condensing box, the light condensing box transmits the converged light energy to the light guide rod through the optical fiber, and the light guide rod irradiates and sinters the fine sand in the melting pool to a molten state; meanwhile, the desert sand is placed into a feeding device 33, the desert sand enters a grading device 32 through the feeding device 33, the desert sand is divided into coarse sand and fine sand, the fine sand is conveyed into a melting tank through a first conveying piece 321, the position of a light guide rod is adjusted, the fine sand is irradiated and sintered, the coarse sand is conveyed into a groove of an outer shell of the melting tank through a second conveying piece 322, the sintered fine sand flows out of a gap of the groove in a molten state and is combined with the coarse sand, the surface of the coarse sand is fully wrapped with the molten fine sand, the rotation speed of a scraper body is adjusted through a driving device, the surface of the coarse sand is uniformly fully wrapped with the molten fine sand, and when the coarse sand fully wrapped with the molten fine sand reaches a target size required by a building, the scraper scrapes the coarse sand out of the groove and reaches a specified device along a conveying device.

In addition, the temperature of the coarse sand with the target size falling to the ground or the sand surface can be adjusted by adjusting the light gathering quantity, the temperature inside the melting pool, the distance between the melting pool and the ground or the sand surface and the like, so that the coarse sand with a plurality of target sizes can be accumulated to form a large-size entity, and the utilization rate of the desert sand is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.