Intermittent conveying mechanism for drying and cooling polycrystalline silicon after water quenching

Abstract

The utility model relates to an intermittent conveying mechanism for drying and cooling polycrystalline silicon after water quenching, a plurality of paired first silicon rod placing seats are arrayed on bottom frames, a lifting platform is arranged between the two bottom frames in a lifting manner, a moving platform is arranged on the lifting platform in a horizontal moving manner, and a plurality of paired second silicon rod placing seats are arrayed on the two sides of the moving platform respectively; the number of the pairs of the first silicon rod placing seats is one pair larger than that of the pairs of the second silicon rod placing seats, the mechanical arm carries the silicon rods placed in the shape like the Chinese character'pin 'to the first pair of the first silicon rod placing seats, and the second silicon rod placing seats carry the silicon rods on the previous pair of the first silicon rod placing seats to the next pair of the first silicon rod placing seats. Then, through movement cooperation of the lifting platform and the moving platform, the second silicon rod placing base carries the silicon rods on the previous pair of first silicon rod placing bases to the next pair of first silicon rod placing bases, and in the transferring process, moisture on the surfaces of the silicon rods is rapidly evaporated to dryness through the temperature of the silicon rods; and automatic joint production of water quenching, drying and crushing of the silicon rod can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of polysilicon water quenching, and in particular to an intermittent conveying mechanism for drying and cooling polysilicon after water quenching. Background Art

[0002] With the improvement of single crystal technology and production capacity, the demand for polysilicon, as the direct raw material for producing single crystal silicon, with a target size range of 8mm to 50mm, has increased significantly. Currently, the silicon materials produced by polysilicon production enterprises are all rod-shaped polysilicon with a diameter of 300mm to 500mm, which need to be crushed before they can be supplied to downstream enterprises.

[0003] With the continuous increase in the value of polysilicon materials, the loss of silicon materials due to crushing has become an important indicator that seriously affects the value of silicon materials and the proportion of silicon materials in single crystals. In the existing technology, direct crushing of silicon rod raw materials is often used, and its crushing loss reaches 3.5%, which is a relatively high crushing loss. Therefore, most manufacturers currently generally water-quench the polysilicon rods before crushing them to make them naturally broken or easy to break, so as to facilitate the subsequent crushing operation and effectively reduce the crushing loss.

[0004] In the prior art, after the silicon rods are removed from the water tank after being quenched in the water tank, there is a large amount of moisture on the surface of the silicon rods. If they are directly crushed, weighed and packaged, moisture will inevitably be introduced into the packaging bag, seriously affecting the quality of the polysilicon products. Customer complaints and returns are serious. Therefore, it is necessary to remove the moisture on the surface of the silicon rods in time. In order to completely remove the moisture on the surface of the silicon rods, a heating drying box is generally used to remove the moisture on the surface of the silicon rods. However, in order to make more silicon rods quenched each time, the silicon rods are placed on the water quenching line in a "pin" shape during the water quenching process, so that the robot also places the silicon rods in a "pin" shape when removing them from the water tank. The silicon rods need to be stacked in multiple layers in the heating drying box, which requires manual The silicon rods are manually moved from a robot to a heating and drying box and stacked. After the heating and drying box heats and dries the silicon rods, they need to cool down for a certain period of time. Then, the silicon rods are manually moved from the heating and drying box to the robot, and the robot moves them to the crushing entrance. This results in the entire drying process being cumbersome and time-consuming, with a low degree of automation, and being unable to achieve automated production connection for water quenching, drying, and crushing of the silicon rods. This requires manual labor to move the silicon rods, which has high labor intensity. In addition, there is a safety risk of falling and injuring workers during the manual movement of the silicon rods, resulting in poor safety. There is also a risk of contaminating the silicon rods when manual movement is involved, resulting in a decline in the quality of polysilicon products. Utility Model Content

[0005] Based on this, it is necessary to address the problem that the drying process of silicon rods after water quenching in the prior art is cumbersome, time-consuming, and has a low degree of automation. It is impossible to achieve the automated connection production of water quenching, drying, and crushing of silicon rods, which requires manual participation in the handling of silicon rods. The labor intensity is high, and there is a safety risk of falling and injuring workers during the manual handling of silicon rods, resulting in poor safety. There is also a risk of contaminating silicon rods when manual handling is involved, resulting in a decrease in the quality of polysilicon products. The present application provides an intermittent conveying mechanism for drying and cooling polysilicon after water quenching, which can solve the above problems in the prior art.

[0006] An intermittent conveying mechanism for drying and cooling polysilicon after water quenching, comprising a base frame, a first silicon rod placement seat, a second silicon rod placement seat, a lifting platform and a moving platform, wherein the two base frames are symmetrically arranged at intervals, and each base frame is provided with a plurality of pairs of the first silicon rod placement seats in an array along its length direction, and the two first silicon rod placement seats form a pair, the lifting platform can be lifted and lowered between the two base frames, the moving platform can be horizontally moved on the lifting platform, and the moving direction of the moving platform is the same as the length direction of the base frame, and the two sides of the moving platform corresponding to the two base frames are respectively provided with a plurality of pairs of the second silicon rod placement seats in an array, and the two second silicon rod placement seats form a pair, and the number of pairs of the first silicon rod placement seats is one pair more than the number of pairs of the second silicon rod placement seats, a robot transports the silicon rods placed in a triangular shape to the first pair of the first silicon rod placement seats, and the second silicon rod placement seats transport the silicon rods on the previous pair of the first silicon rod placement seats to the next pair of the first silicon rod placement seats.

[0007] Preferably, the above-mentioned intermittent conveying mechanism for drying and cooling polysilicon after water quenching also includes a cover, a first fan and a second fan. The cover extends from the base frame and is arranged above the base frame, and a plurality of blowing holes are opened on the top thereof for setting the first fan. A plurality of exhaust holes are opened on both sides of the cover for setting the second fan.

[0008] Preferably, in the above-mentioned intermittent conveying mechanism for drying and cooling polysilicon after water quenching, the lifting platform includes a first flat plate and a plurality of lifting drive mechanisms, the plurality of lifting drive mechanisms are arranged on the two base frames and are all connected to the first flat plate driving, and the plurality of lifting drive mechanisms jointly drive the lifting movement of the first flat plate.

[0009] Preferably, in the above-mentioned intermittent conveying mechanism for drying and cooling polysilicon after water quenching, the mobile platform includes a second flat plate and a mobile driving mechanism, the first flat plate is provided with an avoidance groove, the second flat plate can be horizontally movably arranged on the first flat plate, the mobile driving mechanism is arranged on the side of the first flat plate away from the second flat plate, and the power output end of the mobile driving mechanism is connected to the second flat plate through the avoidance groove, and a plurality of pairs of the second silicon rod placement seats are arranged in an array on the second flat plate.

[0010] Preferably, in the above-mentioned intermittent conveying mechanism for drying and cooling polysilicon after water quenching, the first plate is provided with a slide groove, and the second plate has a slide seat, and the slide seat is slidably matched with the slide groove.

[0011] Preferably, the intermittent conveying mechanism for drying and cooling polysilicon after water quenching further comprises a first temperature detector, wherein the first temperature detector is arranged on the cover and is opposite to the first silicon rod placement seat.

[0012] Preferably, the intermittent conveying mechanism for drying and cooling polysilicon after water quenching further comprises a second temperature detector, wherein the second temperature detector is arranged on the cover and opposite to the first pair of the first silicon rod placement seats.

[0013] Preferably, in the above-mentioned intermittent conveying mechanism for drying and cooling polycrystalline silicon after water quenching, the first silicon rod placement seat and the second silicon rod placement seat have the same structure and are both polyurethane plates with V-shaped grooves.

[0014] The technical solution adopted in this application can achieve the following beneficial effects:

[0015] In an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application, a robot transports silicon rods placed in a "pin" shape to a first pair of first silicon rod placement seats, and then the lifting platform and the moving platform are coordinated to enable the second silicon rod placement seat to transport the silicon rods on the previous pair of first silicon rod placement seats to the next pair of first silicon rod placement seats, and so on, gradually transferring the silicon rods from the front end to the end of the conveying mechanism, that is, gradually transferring the silicon rods placed on the first pair of first silicon rod placement seats to the last pair of first silicon rod placement seats through the second silicon rod placement seat, and finally the robot transports the silicon rods from the end of the conveying mechanism to the crushing entrance again. At the same time, in order to meet the requirement of placing the silicon rods in a "pin" shape on the robot, the conveying mechanism disclosed in the present application is specially designed with pairs of first silicon rod placement seats, and the silicon rods placed in a "pin" shape on the robot are just placed on a pair of first silicon rod placement seats On the other hand, the second silicon rod placement seat is also arranged in pairs. Since the temperature of the silicon rod after each water quenching is about 80°C, the moisture on the surface of the silicon rod can be quickly evaporated by its own temperature during the transfer of the silicon rod in the conveying mechanism, thereby achieving drying of the silicon rod and avoiding the introduction of moisture into the packaging bag to seriously affect the quality of the polysilicon product. It can be seen that through the conveying mechanism disclosed in the present application, the water quenching, drying and crushing of the silicon rods can be automatically connected to the production, a dark factory can be realized, the degree of automation is improved, self-heating drying is utilized, the use of a heating drying box is avoided, the silicon rod drying process is simplified, and the time consumption is less. The entire process does not require manual handling, which reduces the intensity of manual labor and avoids the safety risk of manual handling of silicon rods due to falling and injuring workers, thereby improving safety. At the same time, it can also avoid the risk of contaminating the silicon rods due to manual handling, thereby avoiding the quality decline of polysilicon products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application;

[0017] Figure 2 It is a cross-sectional schematic diagram of an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application;

[0018] Figure 3 It is a partial structural schematic diagram of an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application;

[0019] Figure 4 for Figure 3 Schematic diagram from another perspective;

[0020] Figures 5 to 7 This is a schematic diagram of the operation of an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application.

[0021] Description of the drawings: Manipulator 100, base frame 200, first silicon rod placement seat 310, second silicon rod placement seat 320, lifting platform 400, first flat plate 410, avoidance groove 411, slide 412, lifting drive mechanism 420, mobile platform 500, second flat plate 510, slide 511, mobile drive mechanism 520, cover 610, first fan 620, second fan 630, first temperature detector 710, second temperature detector 720. DETAILED DESCRIPTION

[0022] For ease of understanding of the present application, the present application will be described more fully below with reference to relevant embodiments. The preferred embodiments of the present application are provided in the embodiments. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Please refer to Figures 1 to 7 The embodiment of the present application discloses an intermittent conveying mechanism for drying and cooling polysilicon after water quenching (hereinafter referred to as the conveying mechanism), comprising a base frame 200, a first silicon rod placement seat 310, a second silicon rod placement seat 320, a lifting platform 400 and a moving platform 500, wherein:

[0026] The two base frames 200 are symmetrically arranged at intervals. A plurality of pairs of first silicon rod placement seats 310 are arranged in an array along the length direction of each base frame 200. The two first silicon rod placement seats 310 form a pair. The silicon rods placed in a triangular shape on the robot 100 are placed on a pair of first silicon rod placement seats 310 (refer to Figure 5 and Figure 6), so the first silicon rod placement seats 310 are arranged in pairs, the lifting platform 400 can be lifted and lowered between the two base frames 200, the mobile platform 500 can be horizontally movably arranged on the lifting platform 400, and the moving direction of the mobile platform 500 is the same as the length direction of the base frame 200. During the lifting and lowering process of the lifting platform 400, the mobile platform 500 is driven to lift and lower, and because the mobile platform 500 can be horizontally movably arranged on the lifting platform 400, the mobile platform 500 can also move relative to the lifting platform 400, and the two sides corresponding to the mobile platform 500 and the two base frames 200 are respectively The array is provided with a plurality of pairs of second silicon rod placement seats 320, two second silicon rod placement seats 320 form a pair, a pair of second silicon rod placement seats 320 corresponds exactly to a pair of first silicon rod placement seats 310, and the number of pairs of first silicon rod placement seats 310 is one pair more than the number of pairs of second silicon rod placement seats 320. In the process of moving the silicon rods inside the conveying mechanism, the silicon rods placed on the first pair of first silicon rod placement seats 310 need to be gradually moved to the last pair of first silicon rod placement seats 310, so the number of pairs of first silicon rod placement seats 310 needs to be one pair more than the number of pairs of second silicon rod placement seats 320.

[0027] In the specific working process, the temperature of the silicon rod after each water quenching is about 80℃, please refer to Figures 5 to 7 , the manipulator 100 carries the water-quenched silicon rods (surface temperature of about 80°C, and placed in a triangle shape on the manipulator 100) to the front end of the conveying mechanism. At this time, the lifting platform 400 is at the lowest position, and the mobile platform 500 is located away from the front end of the conveying mechanism. Then, the silicon rods are placed on the first pair of first silicon rod placement seats 310 ( Figure 5 ), that is, the robot 100 carries the silicon rods placed in a triangular shape to the first pair of first silicon rod placement seats 310, and then the robot 100 leaves. After the robot 100 leaves, the mobile platform 500 first moves relative to the lifting platform 400 toward the front end of the conveying mechanism until the mobile platform 500 moves to the front end of the conveying mechanism ( Figure 6 ), and then the lifting platform 400 rises, driving the mobile platform 500 to rise. During the rising process of the mobile platform 500, the second silicon rod placement seat 320 gradually lifts the silicon rod, so that the silicon rod leaves the first silicon rod placement seat 310, so that the silicon rod is now placed on the second silicon rod placement seat 320. After the second silicon rod placement seat 320 completely lifts the silicon rod, the mobile platform 500 moves toward the end of the conveying mechanism relative to the lifting platform 400. After moving into place, the lifting platform 400 descends, driving the mobile platform 500 to descend. During the descending process of the mobile platform 500, the second silicon rod placement seat 320 also gradually descends. The next pair of first silicon rod placement seats 310 will gradually lift the silicon rod on the second silicon rod placement seat 320 until it is completely supported ( Figure 7), in the above process, the second silicon rod placement seat 320 moves the silicon rods on the previous pair of first silicon rod placement seats 310 to the next pair of first silicon rod placement seats 310, and so on, gradually transferring the silicon rods from the front end to the end of the conveying mechanism, and the robot 100 finally moves the silicon rods from the end of the conveying mechanism to the crushing entrance again, and the whole process is completed automatically.

[0028] In an intermittent conveying mechanism for drying and cooling polysilicon after water quenching disclosed in an embodiment of the present application, a robot 100 conveys silicon rods placed in a triangular shape to a first pair of first silicon rod placement seats 310, and then the lifting platform 400 cooperates with the moving platform 500 to enable the second silicon rod placement seats 320 to convey the silicon rods on the previous pair of first silicon rod placement seats 310 to the next pair of first silicon rod placement seats 310, and so on, gradually transferring the silicon rods from the front end to the end of the conveying mechanism, that is, gradually transferring the silicon rods placed on the first pair of first silicon rod placement seats 310 to the last pair of first silicon rod placement seats 310 through the second silicon rod placement seats 320, and finally the robot 100 re-conveys the silicon rods from the end of the conveying mechanism to the crushing entrance. At the same time, in order to meet the requirement of placing silicon rods in a triangular shape on the robot 100, the conveying mechanism disclosed in the present application is specially designed for a pair of first silicon rod placement seats 310, and the robot 100 is placed in a triangular shape. The silicon rods are placed just on a pair of first silicon rod placement seats 310, and the second silicon rod placement seats 320 are also arranged in pairs. Since the temperature of the silicon rods after each water quenching is about 80°C, the moisture on the surface of the silicon rods is quickly evaporated by their own temperature during the transfer of the silicon rods in the conveying mechanism, thereby drying the silicon rods and avoiding the introduction of moisture into the packaging bags to seriously affect the quality of the polysilicon products. It can be seen that through the conveying mechanism disclosed in the present application, the silicon rod water quenching, drying and crushing can be automatically connected to the production, a dark factory can be realized, the degree of automation is improved, self-heating drying is utilized, the use of heating drying boxes is avoided, the silicon rod drying process is simplified, and the time consumption is less. The entire process does not require manual handling, which reduces the intensity of manual labor and avoids the safety risk of falling and injuring workers during the manual handling of silicon rods, thereby improving safety. At the same time, it can also avoid the risk of contaminating silicon rods during manual handling, thereby avoiding the quality decline of polysilicon products.

[0029] Preferably, the conveying mechanism disclosed in the present application may also include a cover 610, a first fan 620 and a second fan 630. The cover 610 extends from the base frame 200 and is arranged above the base frame 200, and a plurality of blowing holes are opened on the top thereof for setting the first fan 620. Both sides of the cover 610 are provided with a plurality of exhaust holes for setting the second fan 630. The silicon rods with a temperature of about 80°C after each water quenching are transported to the conveying mechanism by the manipulator 100. When the silicon rods are transported in the conveying mechanism, the first fan 620 blows cooling clean air toward the silicon rods. Since the temperature of the silicon rods reaches about 80°C at this time, its own temperature can quickly evaporate the moisture on its surface. The blowing of the first fan 620 can accelerate the evaporation of moisture on the surface of the silicon rods, and the water vapor is sucked by the second fan 630. At the same time, since the first fan 620 delivers cooling clean air, while blowing the water vapor on the surface of the silicon rods to quickly evaporate it, the cooling clean air can also cool the silicon rods, so that the surface of the silicon rods transported from the end of the conveying mechanism is dry and the temperature is relatively low, thereby avoiding the introduction of moisture into the packaging bag and seriously affecting the quality of the polysilicon product, and also avoiding the broken materials from easily scalding the plastic packaging bag, causing the bag of broken materials to easily spill during transportation and be contaminated and become waste, causing unnecessary losses.

[0030] In the present application, the lifting platform 400 includes a first flat plate 410 and a plurality of lifting drive mechanisms 420. The plurality of lifting drive mechanisms 420 are arranged on two base frames 200 and are all driven and connected to the first flat plate 410. The plurality of lifting drive mechanisms 420 jointly drive the lifting movement of the first flat plate 410 to stably drive the lifting movement of the first flat plate 410.

[0031] Preferably, the mobile platform 500 includes a second flat plate 510 and a mobile driving mechanism 520, the first flat plate 410 is provided with an avoidance groove 411, the second flat plate 510 can be horizontally moved and arranged on the first flat plate 410, the mobile driving mechanism 520 is arranged on the side of the first flat plate 410 away from the second flat plate 510, and the power output end of the mobile driving mechanism 520 passes through the avoidance groove 411 and is drivingly connected to the second flat plate 510, and a plurality of pairs of second silicon rod placement seats 320 are arranged in an array on the second flat plate 510. The structure is simple and the movement is reliable.

[0032] Furthermore, the first plate 410 is provided with a slide groove 412 , and the second plate 510 has a slide seat 511 , and the slide seat 511 is slidably matched with the slide groove 412 .

[0033] In order to ensure that the temperature of the silicon rods after drying and cooling by the conveying mechanism is low and will not burn the packaging bags, it is necessary to ensure that the temperature of the silicon rods conveyed from the end of the conveying mechanism is low (below 50°C). Optionally, the conveying mechanism disclosed in the present application may also include a first temperature meter 710, which is arranged on the cover 610 and opposite to the first silicon rod placement seat 310 at the end. The temperature of the silicon rod delivered from the end of the conveying mechanism is detected by the first thermometer 710. When the temperature of the silicon rod is low (it will not burn the packaging bag after being crushed and packaged), the robot 100 will move it to the crusher for crushing and subsequent processes. If the temperature of the silicon rod is high (it can burn the packaging bag after being crushed and packaged), the robot 100 will move the silicon rod to the manual line for cooling for a period of time before crushing and packaging. The first thermometer 710 is used to determine that the temperature of the silicon rod is low. Only when the temperature of the silicon rod is low will it enter the next process. Silicon rods with higher temperatures require secondary cooling. In this way, the first thermometer 710 can ensure that silicon rods with higher temperatures are not directly crushed and packaged, thereby preventing the crushed materials with higher temperatures from easily burning the plastic packaging bags, and then preventing the packaging bags from being easily spilled and contaminated as waste due to being burned, thereby avoiding unnecessary losses.

[0034] Furthermore, it also includes a second temperature measuring device 720, which is disposed on the cover 610 and is opposite to the first pair of first silicon rod placement seats 310. The manipulator 100 carries the silicon rod after the water quenching to the second temperature measuring device 720. After the temperature is measured by the second temperature measuring device 720, if the requirements are met (about 80°C), the silicon rod enters the conveying mechanism. If the requirements are not met (the temperature is much greater than 80°C or the temperature is much less than 80°C), the silicon rod goes to the manual line, and the temperature is controlled from the source, so that the temperature of the silicon rod entering the conveying mechanism is about 80°C. At this temperature, the temperature of the silicon rod is just reduced to below 50°C after passing through the conveying mechanism, and it is just dried.

[0035] Preferably, the first silicon rod placement seat 310 and the second silicon rod placement seat 320 have the same structure and are both polyurethane plates with V-shaped grooves, and the polyurethane plates will not contaminate the silicon rods.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An intermittent conveying mechanism for drying and cooling polysilicon after water quenching, characterized in that: The invention comprises a base frame (200), a first silicon rod placement seat (310), a second silicon rod placement seat (320), a lifting platform (400) and a moving platform (500), wherein the two base frames (200) are symmetrically arranged at intervals, and each base frame (200) is provided with a plurality of pairs of the first silicon rod placement seats (310) in an array along its length direction, and the two first silicon rod placement seats (310) form a pair, the lifting platform (400) can be lifted and arranged between the two base frames (200), and the moving platform (500) can be horizontally movably arranged on the lifting platform (400), and the moving direction of the moving platform (500) is aligned with the base frames. (200) have the same length direction, and a plurality of pairs of the second silicon rod placement seats (320) are arranged in an array on both sides of the movable platform (500) corresponding to the two base frames (200), two of the second silicon rod placement seats (320) form a pair, and the number of pairs of the first silicon rod placement seats (310) is one pair more than the number of pairs of the second silicon rod placement seats (320), the robot (100) transports the silicon rods placed in a triangular shape to the first pair of the first silicon rod placement seats (310), and the second silicon rod placement seats (320) transport the silicon rods on the previous pair of the first silicon rod placement seats (310) to the next pair of the first silicon rod placement seats (310).

2. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 1, characterized in that: It also includes a cover (610), a first fan (620) and a second fan (630), wherein the cover (610) extends from the base frame (200) and is arranged above the base frame (200), and a plurality of blowing holes are provided on the top thereof for arranging the first fan (620), and a plurality of exhaust holes are provided on both sides of the cover (610) for arranging the second fan (630).

3. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 1, characterized in that: The lifting platform (400) comprises a first flat plate (410) and a plurality of lifting drive mechanisms (420); the plurality of lifting drive mechanisms (420) are arranged on the two base frames (200) and are all drivingly connected to the first flat plate (410); the plurality of lifting drive mechanisms (420) jointly drive the first flat plate (410) to move upward and downward.

4. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 3, characterized in that: The mobile platform (500) comprises a second plate (510) and a mobile driving mechanism (520); the first plate (410) is provided with an avoidance groove (411); the second plate (510) is horizontally movable and arranged on the first plate (410); the mobile driving mechanism (520) is arranged on a side of the first plate (410) away from the second plate (510); and a power output end of the mobile driving mechanism (520) passes through the avoidance groove (411) and is drivingly connected to the second plate (510); and a plurality of pairs of the second silicon rod placement seats (320) are arranged in an array on the second plate (510).

5. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 4, characterized in that: The first flat plate (410) is provided with a sliding groove (412), and the second flat plate (510) has a sliding seat (511), and the sliding seat (511) is slidably matched with the sliding groove (412).

6. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 2, characterized in that: It also includes a first temperature measuring device (710), wherein the first temperature measuring device (710) is arranged on the cover (610) and is opposite to the first silicon rod placement seat (310).

7. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 6, characterized in that: It also includes a second temperature measuring device (720), which is arranged on the cover (610) and is opposite to the first pair of the first silicon rod placement seats (310).

8. The intermittent conveying mechanism for drying and cooling polysilicon after water quenching according to claim 1, characterized in that: The first silicon rod placement seat (310) and the second silicon rod placement seat (320) have the same structure and are both polyurethane plates with V-shaped grooves.

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