Spiral conveying and discharging equipment for FBR particle silicon fluidized bed

By designing a spiral conveyor discharge device for FBR granular silicon fluidized bed, the problem of granular silicon blockage at the discharge port was solved, achieving seamless discharge, reducing pollution, and lowering production costs.

CN223822921UActive Publication Date: 2026-01-23LESHAN SUMIN NEW ENERGY TECH CO LTD
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Patent Information

Application Number
CN202520854525.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-01-23
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

In the process of producing granular silicon using the FBR fluidized bed method, granular silicon lumps can easily get stuck or block the fluidized bed outlet, preventing the granular silicon product from being discharged normally.

Method used

Design a spiral conveying and discharging device for FBR particulate silicon fluidized bed, including a hollow cylindrical shell, a spiral connector and a drive motor. The spiral connector slowly discharges particulate silicon from the bottom of the fluidized bed to avoid contact with air and reduce pollution.

Benefits of technology

It effectively eliminates blockages at the fluidized bed outlet, reduces pollution and cost losses in granular silicon products, and improves production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides spiral conveying and discharging equipment for an FBR particle silicon fluidized bed, which comprises a hollow cylindrical shell (1), two ends of the shell (1) are open, one end of the shell (1) is mounted at a discharge port of the fluidized bed, and a transmission connecting piece (6) is mounted at the other end of the shell (1); a shell discharge hole (13) is formed in the side surface of the shell (1), which is far away from the fluidized bed discharge hole; the lower portion of the transmission connecting piece (6) is fixedly connected with the output end of the driving motor (7), and the upper end of the transmission connecting piece (6) is fixedly connected with the first spiral connecting piece (2) through the connecting shaft (4). The first spiral connecting piece (2) is arranged in the shell (1) and extends into a discharge hole of the fluidized bed; and the first spiral connecting piece (2) comprises a first connecting piece spiral sheet (22) for conveying solid materials during rotation.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of equipment for conveying and discharging, in particular to a kind of equipment for the spiral conveying and discharging of FBR granular silicon fluidized bed. BACKGROUND

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] FBR fluidized bed method produces granular silicon by adding high-purity silicon seed crystal at the top of the fluidized bed reactor, and the seed crystal granular silicon bed layer is formed by accumulation. The mixed gas of silane (SiH4) and hydrogen is injected from the bottom of the fluidized bed, and the seed crystal granular bed layer is suspended by controlling the flow rate of the carrier gas, and the fixed bed is converted into a fluidized bed state. Silane is decomposed into elemental silicon and hydrogen (SiH4→Si+2H2) in the fluidized bed. The silicon atoms deposited on the surface of the suspended seed crystal cause its epitaxial growth. As the silicon continues to deposit, the seed crystal particles gradually increase to the target size, and after the weight increases, they settle to the bottom of the fluidized bed due to gravity, and are finally discharged from the discharge port at the bottom of the fluidized bed. By continuously replenishing the seed crystal and passing in the mixed gas, uninterrupted continuous production is achieved.

[0004] In the above-mentioned process of producing granular silicon by FBR fluidized bed method, granular silicon block may be formed, and as the volume and mass of the block are large, it is easy to fall and block or block the discharge port of the fluidized bed, causing the granular silicon product to be unable to be normally discharged.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0006] The technical problem to be solved by the utility model is to provide a kind of equipment for the spiral conveying and discharging of FBR granular silicon fluidized bed to solve the technical problems of prior art.

[0007] In order to solve the above technical problems, the utility model discloses a kind of equipment for the spiral conveying and discharging of FBR granular silicon fluidized bed, comprising:

[0008] The hollow cylindrical shell is open at both ends, one end is installed at the discharge port of the fluidized bed, and the other end is provided with a transmission connecting piece; a shell discharge port is formed on the side of the shell away from the discharge port of the fluidized bed;

[0009] The transmission connecting piece is fixedly connected with the output end of the driving motor below, and the upper end is fixedly connected with the first spiral connecting piece through the connecting shaft;

[0010] The first screw connecting piece is arranged inside the shell and extends into the fluidized bed discharge port; the first screw connecting piece comprises first connecting piece helical blades for conveying solid materials during rotation.

[0011] Further, the shell is fixed with a shell first flange connector and a shell second flange connector at the two open ends, respectively, for connecting the fluidized bed and the transmission connecting piece.

[0012] Further, the transmission connecting piece comprises:

[0013] The transmission connecting piece first flange head is connected with the middle shaft at the middle part, the middle shaft is provided with a transmission connecting piece bolt hole at one end and a transmission connecting piece second flange head at the other end; the middle shaft is connected with the connecting shaft through the transmission connecting piece bolt hole.

[0014] Further, the connecting shaft comprises:

[0015] The connecting shaft flange head arranged at one end of the connecting shaft is connected with the first screw connecting piece;

[0016] and the connecting shaft bolt hole arranged at the other end of the connecting shaft cooperates with the transmission connecting piece bolt hole to be fixedly connected through a fixing bolt.

[0017] Further, the first screw connecting piece comprises:

[0018] The first connecting piece main shaft is fixedly provided with the first connecting piece helical blades on the outer side surface, and is provided with a first connecting piece bottom flange head at the bottom for connecting with the connecting shaft.

[0019] Further, a second screw connecting piece is arranged between the connecting shaft and the first screw connecting piece for extending the first screw connecting piece.

[0020] Further, the second screw connecting piece comprises:

[0021] The second connecting piece main shaft is fixedly provided with second connecting piece helical blades on the outer side surface, and is provided with a second connecting piece bottom flange head and a second connecting piece top flange head at two ends, respectively, for connecting with the connecting shaft or the first screw connecting piece.

[0022] Further, the second screw connecting piece is provided with a plurality of.

[0023] Further, a transmission device is arranged between the transmission connecting piece and the driving motor output end, the transmission device is fixedly connected with the transmission connecting piece and the driving motor output end at two ends through flange heads, respectively, for changing the transmission direction between the transmission connecting piece and the driving motor output end.

[0024] Further, the parts inside the shell in contact with the granular silicon are made of non-metal or are sprayed with a non-metallic polymer wear-resistant layer on the surface.

[0025] Beneficial effects:

[0026] 1. The number of spiral connecting pieces is increased, which can dislodge the irregular granular mass block that blocks or blocks the discharge port of the fluidized bed.

[0027] 2. The utility model can realize a completely closed space, and the granular silicon can not be in contact with air during the discharging process, thereby reducing the pollution of the granular silicon by air and reducing the cost loss.

[0028] 3. The utility model is sprayed with a non-metallic polymer wear-resistant layer on the surface of each part, which can reduce the frictional contact between the granular silicon and the metal body during the discharging and conveying process, reduce the introduction of metal impurities, and thereby reduce the cost loss. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or other aspects of the utility model will become more apparent from the following detailed description in conjunction with the accompanying drawings.

[0030] Figure 1 It is a general structure schematic diagram of the utility model.

[0031] Figure 2 It is a shell structure schematic diagram.

[0032] Figure 3 It is a first spiral connecting piece structure schematic diagram.

[0033] Figure 4 It is a second spiral connecting piece structure schematic diagram.

[0034] Figure 5 It is a connecting shaft structure schematic diagram.

[0035] Figure 6 It is a transmission connecting piece structure schematic diagram.

[0036] In the drawing: 1 is a shell, 11 is a first flange connector of the shell, 12 is a second flange connector of the shell, 13 is a discharge port of the shell, and 14 is a discharge pipeline;

[0037] 2 is a first spiral connecting piece, 21 is a first connecting piece main shaft, 22 is a first connecting piece spiral piece, and 23 is a first connecting piece bottom flange head;

[0038] 3 is a second spiral connecting piece, 31 is a second connecting piece main shaft, 32 is a second connecting piece spiral piece, 33 is a second connecting piece bottom flange head, and 34 is a second connecting piece top flange head;

[0039] 4 is the connecting shaft, 41 is the connecting shaft flange, 42 is the connecting shaft bolt hole;

[0040] 5 is the fixed bolt;

[0041] 6 is the transmission connecting piece, 61 is the first flange of the transmission connecting piece, 62 is the transmission connecting piece bolt hole, and 63 is the second flange of the transmission connecting piece;

[0042] 7 is the driving motor, and 8 is the transmission device; DETAILED DESCRIPTION

[0043] The utility model discloses a general train of thought, provide a kind of loading and unloading device that need not pass through dismantling fluidized bed bottom flange, discharge the granular silicon accumulated in fluidized bed, reduce the probability of granular silicon product being contaminated after contacting with air, reduce cost loss.

[0044] The utility model provides a kind of for FBR granular silicon production process fluidized bed clearing block discharge device, as shown in figure, Figure 1 To reduce the pollution of granular silicon during discharge by air, so that the grade of granular silicon is reduced, and the cost loss is reduced.

[0045] As shown in Figure 1 The device for FBR granular silicon production process fluidized bed clearing block discharge is mainly composed of a shell 1, a first spiral connecting piece 2, a second spiral connecting piece 3, a connecting shaft 4, a fixed bolt 5, a transmission connecting piece 6, a driving motor 7, and a transmission device 8, wherein:

[0046] As shown in Figure 2 The shell 1 is a hollow cylindrical structure with openings at the top and bottom, and a shell first flange connector 11 and a shell second flange connector 12 are arranged at the top and bottom ends respectively. A shell discharge port 13 is formed in the lower part of the side wall of the shell 1, and a discharge pipeline 14 is arranged on the shell discharge port 13, and the other end of the discharge pipeline 14 is sleeved with a clean bag for storing granular silicon.

[0047] The shell second flange connector 12 is connected with the transmission connecting piece first flange 61, and the transmission connecting piece 6 is installed at the bottom of the shell 1.

[0048] As shown in Figure 6 The transmission connecting piece 6 comprises: a transmission connecting piece first flange 61 connected with the shell 1, a middle shaft rotatably connected to the middle part of the transmission connecting piece first flange 61, a transmission connecting piece bolt hole 62 arranged on the upper end of the middle shaft, and a transmission connecting piece second flange 63 arranged on the lower end of the middle shaft; the upper end of the middle shaft is connected with the lower end of the connecting shaft 4 through the transmission connecting piece bolt hole 62.

[0049] As shown in Figure 5As shown, the connecting shaft 4 includes: a connecting shaft flange head provided at the top of the connecting shaft 4, for connecting the second screw connecting piece 3; and a connecting shaft bolt hole 42 provided at the lower end of the connecting shaft 4, cooperating with the transmission connecting piece bolt hole 62, and fixedly connected through the fixed bolt 5.

[0050] As shown in the figure, the first screw connecting piece 2 includes: a first connecting piece main shaft 21, the outer side of which is fixedly provided with a first connecting piece screw blade 22, and the bottom is provided with a first connecting piece bottom flange head 23, for connecting the second screw connecting piece 3. Figure 4 As shown in the figure, the second screw connecting piece 3 includes: a second connecting piece main shaft 31, the outer side of which is fixedly provided with a second connecting piece screw blade 32, and the bottom and the top are respectively provided with a second connecting piece bottom flange head 33 and a second connecting piece top flange head 34. Respectively used for connecting the connecting shaft 4 and the first screw connecting piece 2.

[0051] Figure 3 As shown in the figure, the first screw connecting piece 2 includes: a first connecting piece main shaft 21, the outer side of which is fixedly provided with a first connecting piece screw blade 22, and the bottom is provided with a first connecting piece bottom flange head 23, for connecting the second screw connecting piece 3.

[0052] The transmission connecting piece second flange head 63 is connected with the output end of the driving motor 7, so as to drive the first connecting piece screw blade 22 and the second connecting piece screw blade 32 to rotate; the screw directions of the first connecting piece screw blade 22 and the second connecting piece screw blade 32 are the same, and when rotating, the granular silicon in the fluidized bed is brought to the bottom.

[0053] The second screw connecting piece 3 is provided as multiple series according to needs, and can be deeply inserted into the discharge port of the fluidized bed.

[0054] In some embodiments, a transmission device 8 can also be added, for changing the power transmission direction of the motor 7 and the transmission connecting piece 6.

[0055] When there is an irregular granular silicon block stuck or blocked in the discharge port of the fluidized bed during use, the original discharging pipeline is removed;

[0056] Assembling the shell: connecting the shell 1 with the discharge port of the fluidized bed through flange connection, and sleeving a clean bag at the discharge port of the shell 1 for use to contain the discharged granular silicon;

[0057] Assembling the screw conveying shaft: connecting the lower end of the first screw connecting piece 2 and the second screw connecting piece 3 through flange connection, and connecting the other flange end of the second screw connecting piece 3 with the flange end of the connecting shaft 4 through flange connection; thus, the screw conveying shaft is assembled.

[0058] Assembling the end face cover: inserting the pin hole end of the transmission connecting piece 6 into the pin hole end of the connecting shaft 4, aligning the pin holes, and then inserting the fixed bolt 5 to connect and fix the screw conveying shaft and the transmission connecting piece 6; wherein the nominal outer diameter of the pin hole end of the transmission connecting piece 6 is 0.5-8mm smaller than the nominal inner diameter of the pin hole end of the connecting shaft 4;

[0059] ​Some notable points:

[0060] 1. The inner surface of the shell 1, the first screw connection 2, the second screw connection 3, the connecting shaft 4, the fixed bolt 5, and the inner surface of the transmission connection 6 are sprayed with a non-metallic polymer wear-resistant layer with a film thickness of 1-5000 μm to prevent the friction of particulate silicon with the metal body of each component; 2. The nominal diameter of the screw L = 25-600 mm, and the pitch D = 25-600 mm; the second screw connection 3 has no upper and lower ends, and multiple second screw connections 3 can be connected to lengthen or shorten the screw conveying shaft. Generally, the number of second screw connections 3 is increased to make the first screw connection 2 extend into the fluidized bed bed layer.

[0061] 2. Assemble the helical gear transmission device: the transmission device is mainly composed of a transmission gear and a helical gear to change the transmission direction of the force. One end of the helical gear transmission device is connected to the flange end of the transmission connection, and the other end of the helical gear transmission device is connected to the flange end of the driving motor. Thus, all component assembly is completed.

[0062] After all components are assembled, the motor drives the shaft to rotate, which in turn drives the helical gear to rotate. The helical gear changes the direction of the force by engaging with the transmission gear, thereby driving the screw conveying shaft to rotate as a whole, and then slowly discharging the particulate silicon in the fluidized bed bed layer into the clean bag.

[0063] The present application provides a kind of for the thought and method of the equipment of FBR particulate silicon fluidized bed helical conveying discharge, the method and approach of specific implementation this technical scheme are many, above-mentioned only is preferred implementation mode of the present application, it should be pointed out, for the ordinary skilled person in the art, under the premise of not departing from the principles of the present application, still can make several improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the present application. The components not explicitly described in the embodiment can be implemented using existing technology.

Claims

1. A screw conveyor for discharging granular silica fluidized beds in FBR (Fluorescent Batch Reactor) systems, characterized in that, include: A hollow cylindrical shell (1) has openings at both ends. One end is installed at the fluidized bed outlet, and the other end is equipped with a transmission connector (6). A shell outlet (13) is provided on the side of the shell (1) away from the fluidized bed outlet. The lower part of the transmission connector (6) is fixedly connected to the output end of the drive motor (7), and the upper part is fixedly connected to the first spiral connector (2) through the connecting shaft (4); The first spiral connector (2) is disposed inside the housing (1) and extends into the fluidized bed outlet; the first spiral connector (2) includes a first connecting spiral blade (22) that transmits solid materials when rotating.

2. The screw conveyor discharge device for FBR granular silica fluidized bed according to claim 1, characterized in that, The shell (1) is fixed with a first flange connector (11) and a second flange connector (12) at its two ends, respectively, for connecting the fluidized bed and the transmission connector (6).

3. The screw conveyor discharge device for FBR granular silica fluidized bed according to claim 1, characterized in that, The transmission connector (6) includes: The transmission connector first flange head (61) is connected to the housing (1). The middle part of the transmission connector first flange head (61) is rotatably connected to a central shaft. One end of the central shaft is provided with a transmission connector pin hole (62), and the other end is provided with a transmission connector second flange head (63). The central shaft is connected to the connecting shaft (4) through the transmission connector pin hole (62).

4. The screw conveyor discharge device for FBR granular silica fluidized bed according to claim 3, characterized in that, The connecting shaft (4) includes: The connecting shaft flange head (41) is provided at one end of the connecting shaft (4) and is connected to the first spiral connector (2); And a connecting shaft pin hole (42) provided at the other end of the connecting shaft (4) cooperates with the transmission connecting pin hole (62) and is fixedly connected by a fixing pin (5).

5. The screw conveyor discharge device for an FBR granular silica fluidized bed according to claim 1, characterized in that, The first spiral connector (2) includes: The first connector spindle (21) has a first connector spiral blade (22) fixed on its outer side and a first connector bottom flange head (23) at its bottom, which is connected to the connecting shaft (4).

6. The screw conveyor discharge device for an FBR granular silica fluidized bed according to claim 1, characterized in that, A second spiral connector (3) is provided between the connecting shaft (4) and the first spiral connector (2) for extending the first spiral connector (2).

7. A screw conveyor for discharging granular silica fluidized beds according to claim 6, characterized in that, The second spiral connector (3) includes: The second connecting spindle (31) has a second connecting spiral blade (32) fixed on its outer side. The two ends of the second connecting spindle (31) are respectively provided with a second connecting bottom flange head (33) and a second connecting top flange head (34); respectively used to connect the connecting shaft (4) or the first spiral connecting member (2).

8. A screw conveyor for discharging particulate silica fluidized beds according to claim 6, characterized in that, The second spiral connector (3) is provided in multiple parts.

9. A screw conveyor for discharging granular silica fluidized beds according to claim 1, characterized in that, A transmission device (8) is provided between the transmission connector (6) and the output end of the drive motor (7). The two ends of the transmission device (8) are fixedly connected to the transmission connector (6) and the output end of the drive motor (7) respectively through flange heads, and are used to change the transmission direction between the transmission connector (6) and the output end of the drive motor (7).

10. A screw conveyor for discharging granular silica fluidized beds according to claim 1, characterized in that, The components inside the housing (1) that come into contact with the granular silicon are made of non-metallic materials or have a non-metallic polymer wear-resistant layer sprayed on their surfaces.