A device for mixing and preparing ingot mold coating for smelting silicon-aluminum alloy

Abstract

The invention discloses an ingot mold coating mixing and preparation device for silicon-aluminum alloy smelting, which relates to the technical field related to mixing and stirring. The stirring and scraping functions are realized by adopting a mixing agitator and three scrapers. The mixing agitator and the three scrapers are connected to each other in turn through an interlocking mechanism. The interlocking mechanism is locked by increasing the rotational resistance. Therefore, as the rotation speed of the mixing agitator increases, the upward driving force on the mixing agitator itself will gradually increase, thereby locking the mixing agitator and the first scraper, thereby driving the first scraper to rotate together, increasing the stirring range and stirring effect, and at the same time using the first scraper to scrape off the coating stuck to the cylinder wall. As the rotation speed increases, the second scraper and the third scraper will be driven to rotate in turn, and finally the planetary gear will be driven to rotate, so that the agitator, the first scraper, the second scraper and the third scraper are rotated as a whole around the central gear for stirring and mixing.

Description

Technical Field

[0001] The invention relates to the technical field related to mixing and stirring, and in particular to an ingot mold coating mixing and preparation device for silicon-aluminum alloy smelting. Background Art

[0002] Silicon aluminum alloy has a series of unique physical and chemical properties, such as good mechanical properties, corrosion resistance, light weight and high strength, etc. These properties make it widely used in aerospace, automobile, construction and other fields. In the smelting process of silicon aluminum alloy, ingot mold coating is very important to ensure product quality and production efficiency. The ingot mold coating needs to be fully mixed and stirred during preparation to ensure the uniformity of the coating.

[0003] The new ingot mold coating used in silicon-aluminum alloy smelting is prepared by mixing chrome corundum powder, sodium silicate powder, HPMC powder and water, wherein water is used as a solvent and water is gradually added to dilute the coating during stirring. The finished coating is a viscous colloid. Due to the small amount of water in the early stage of stirring, the mixing of the coating raw material powder and water is not uniform enough, and local agglomeration may occur. The traditional coating mixing device can only mix and stir the mixing tank as a whole, but cannot accurately control the local stirring. Summary of the invention

[0004] The purpose of the present invention is to provide an ingot mold coating mixing and preparation device for silicon-aluminum alloy smelting, so as to solve the problem that the traditional coating mixing device proposed in the above background can only mix and stir the stirring cylinder as a whole, but cannot accurately control the local stirring.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a mixing and preparing device for ingot mold coating for smelting silicon aluminum alloy, comprising a mixing machine base, a mixing tank is fixedly clamped on the mixing machine base, a lifting guide frame is arranged on the mixing machine base, a lifting rod is fixedly connected to the lifting guide frame, a mixing agitator is arranged at the lower end of the lifting rod, the mixing agitator comprises a central gear, the mixing agitator is rotatably connected to a rotating disk through a bearing, a servo motor is fixedly connected to one end of the rotating disk, a transmission rod is fixedly connected to the servo motor, a mixing agitator blade is connected to the lower end of the transmission rod, a first scraper, a second scraper and a third scraper are sequentially arranged above the mixing agitator blade, a planetary gear is arranged above the third scraper, the central gear and the planetary gear are meshed with each other, the transmission rod passes through the first scraper, the second scraper, the third scraper and the planetary gear, and the transmission rod is rotatably connected to the first scraper, the second scraper, the third scraper and the planetary gear;

[0006] A first interlocking mechanism is provided between the mixing and stirring blade and the first scraper, the upper end of the mixing and stirring blade is fixedly connected with a lifting sleeve, the lower end of the transmission rod is inserted into the lifting sleeve, the transmission rod and the lifting sleeve are slidably connected up and down, a first center tube is provided at the center of the first scraper, the transmission rod passes through the first center tube, and the lifting sleeve is inserted into the first center tube, the first interlocking mechanism includes a first interlocking drive block, the first interlocking drive block is located in the first center tube, the lower end of the first interlocking drive block and the upper end of the lifting sleeve are both processed with first interlocking teeth that engage with each other, a first pressure spring is provided between the first interlocking drive block and the lifting sleeve, the outer wall of the first interlocking drive block and the inner wall of the first center tube are respectively processed with first lifting threads that engage with each other, and a first limit spring is provided between the top of the first interlocking drive block and the first center tube;

[0007] A second interlocking mechanism is provided between the first scraper and the second scraper, a third interlocking mechanism is provided between the second scraper and the third scraper, and a fourth interlocking mechanism is provided between the third scraper and the planetary gear. The functions of the second interlocking mechanism and the third interlocking mechanism are consistent with those of the first interlocking mechanism.

[0008] Furthermore, a second center tube is provided at the center of the second scraper blade, the upper end of the first center tube is inserted into the second center tube, the second interlocking mechanism includes a second interlocking drive block, the second interlocking drive block is located in the second center tube, and the upper end of the first center tube and the lower end of the second interlocking drive block are respectively processed with second interlocking teeth that interlock with each other, a second pressure spring is provided between the first center tube and the second interlocking drive block, second lifting threads that interlock with each other are respectively processed around the second interlocking drive block and on the inner wall of the second center tube, and a second limit spring is provided between the top of the second interlocking drive block and the second center tube.

[0009] Furthermore, a third center tube is provided at the center of the third scraper blade, and the upper end of the second center tube is inserted into the third center tube. The third interlocking mechanism includes a third interlocking drive block, and the third interlocking drive block is located in the third center tube. The upper end of the second center tube and the lower end of the third interlocking drive block are respectively processed with third interlocking teeth that engage with each other, a third pressure spring is provided between the second center tube and the third interlocking drive block, and third lifting threads that engage with each other are respectively processed around the third interlocking drive block and on the inner wall of the third center tube, and a third limit spring is provided between the top of the third interlocking drive block and the third center tube.

[0010] Furthermore, the lower end of the planetary gear is fixedly connected to a gear sleeve, the upper end of the third center tube is inserted into the gear sleeve, the fourth interlocking mechanism includes a docking tube, the docking tube is fixedly connected inside the gear sleeve, the lower end of the docking tube and the upper end of the third center tube are respectively processed with fourth interlocking teeth that engage with each other, and a fourth pressure spring is arranged between the gear sleeve and the third center tube.

[0011] Furthermore, the first pressure spring is rotatably connected to the first center tube and the first interlocking drive block through a group of plane bearings, the second pressure spring is rotatably connected to the second center tube and the second interlocking drive block through a group of plane bearings, and the third pressure spring is rotatably connected to the third center tube and the third interlocking drive block through a group of plane bearings.

[0012] Furthermore, the elastic coefficient of the first limit spring is greater than the elastic coefficient of the first pressure spring, the elastic coefficient of the second limit spring is greater than the elastic coefficient of the second pressure spring, and the elastic coefficient of the third limit spring is greater than the elastic coefficient of the third pressure spring.

[0013] Furthermore, the first engaging tooth, the second engaging tooth and the third engaging tooth are all one-way ratchet teeth.

[0014] Furthermore, the two ends of the first limit spring are respectively fixedly connected to the first interlocking drive block and the first center tube, the two ends of the second limit spring are respectively fixedly connected to the second interlocking drive block and the second center tube, and the two ends of the third limit spring are respectively fixedly connected to the third interlocking drive block and the third center tube.

[0015] Furthermore, a sealing ring is used for waterproof sealing at the joint between the lifting sleeve and the first center tube, a sealing ring is used for waterproof sealing at the joint between the first center tube and the second center tube, a sealing ring is used for waterproof sealing at the joint between the second center tube and the third center tube, and a sealing ring is used for waterproof sealing at the joint between the third center tube and the gear sleeve.

[0016] Furthermore, the first scraper, the second scraper and the third scraper are all made of rubber, the edges of the first scraper, the second scraper and the third scraper are thinner than the middle, and the edges of the first scraper, the second scraper and the third scraper are in contact with the inner wall of the mixing tank when they rotate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention proposes a device for mixing and preparing coatings for ingot molds for smelting silicon-aluminum alloys. The device realizes the functions of stirring and scraping by adopting a mixing agitator and three scrapers. The mixing agitator and the three scrapers are connected to each other in turn through an interlocking mechanism. The interlocking mechanism is locked by increasing the rotational resistance. Therefore, at the beginning, the rotation of the mixing agitator will not drive the three scrapers to rotate. As the rotation speed of the mixing agitator increases, the upward driving force on the mixing agitator itself will gradually increase, thereby locking the mixing agitator and the first scraper, thereby driving the first scraper to rotate together, increasing the stirring range and stirring effect. At the same time, the first scraper is used to scrape off the coating stuck on the cylinder wall. As the rotation speed increases, the second scraper and the third scraper will be driven to rotate in turn, and finally the planetary gear will be driven to rotate, so that the agitator, the first scraper, the second scraper and the third scraper rotate as a whole around the central gear to stir and mix. This has the following beneficial effects:

[0019] 1. In this way, the rotation stirring stage can be accurately adjusted by adjusting the speed of the servo motor, so as to switch between overall stirring and local fixed-point stirring, which is beneficial to deal with the situation of local coating powder agglomeration, making the material stirring more uniform and the stirring effect better.

[0020] 2. Through the multi-level control of the mixing agitator, three scrapers can be used for fixed-point scraping at any position, or one, two or three scrapers can be flexibly selected for stirring and scraping according to the depth of the paint, making the scraping effect more efficient.

[0021] 3. Since the resistance encountered by the agitator, the first scraper, the second scraper and the third scraper during rotation is not only related to the rotation speed but also to the viscosity of the paint, when the servo motor rotates at a constant speed, different viscosities of the paint will also cause changes in the working state of the mixing agitator. Therefore, when the paint is mixed and diluted, the change in the working state of the mixing agitator can be used to simply determine the range of the viscosity of the paint, so as to facilitate simple mixing and modulation of a paint of a predetermined viscosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a mixing and preparing device for ingot mold coating for smelting silicon-aluminum alloy of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the mixing agitator of the present invention;

[0024] Figure 3 It is a schematic structural diagram of the first interlocking mechanism of the present invention;

[0025] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a schematic structural diagram of the first interlocking mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0028] Figure 7 It is a schematic diagram of the structure of the third interlocking mechanism of the present invention;

[0029] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle;

[0030] Fig. 9 It is a schematic structural diagram of the fourth interlocking mechanism of the present invention;

[0031] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at D in the middle.

[0032] Numbers in the figure: 1, mixer base; 2, mixing tank; 3, lifting guide rail frame; 4, lifting rod; 5, mixing agitator; 6, central gear; 7, rotating disk; 8, servo motor; 9, transmission rod; 10, mixing blade; 1001, lifting sleeve; 11, first scraper; 1101, first center cylinder; 12, second scraper; 1201, second center cylinder; 13, third scraper; 1301, third center cylinder; 14, planetary gear; 1401, gear sleeve; 15, first interlocking mechanism; 1501, first interlocking drive block; 1502, first engaging tooth; 1503, first pressure spring; 1504, the first lifting thread; 1505, the first limit spring; 16, the second interlocking mechanism; 1601, the second interlocking drive block; 1602, the second engaging tooth; 1603, the second pressure spring; 1604, the second lifting thread; 1605, the second limit spring; 17, the third interlocking mechanism; 1701, the third interlocking drive block; 1702, the third engaging tooth; 1703, the third pressure spring; 1704, the third lifting thread; 1705, the third limit spring; 18, the fourth interlocking mechanism; 1801, the docking sleeve; 1802, the fourth engaging tooth; 1803, the fourth pressure spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 and Figure 2 As shown, a mixing and preparing device for ingot mold coating for smelting silicon-aluminum alloy comprises a mixing machine base 1, a mixing tank 2 is fixedly clamped on the mixing machine base 1, a lifting guide frame 3 is arranged on the mixing machine base 1, a lifting rod 4 is fixedly connected to the lifting guide frame 3, a mixing agitator 5 is arranged at the lower end of the lifting rod 4, the mixing agitator 5 comprises a central gear 6, the mixing agitator 5 is rotatably connected to a rotating disk 7 through a bearing, a servo motor 8 is fixedly connected to one end of the rotating disk 7, a transmission rod 9 is fixedly connected to the servo motor 8, a mixing agitator blade 10 is connected to the lower end of the transmission rod 9, a first scraper 11, a second scraper 12 and a third scraper 13 are arranged above the mixing agitator blade 10 in sequence, a planetary gear 14 is arranged above the third scraper 13, the central gear 6 is meshed with the planetary gear 14, the transmission rod 9 passes through the first scraper 11, the second scraper 12, the third scraper 13 and the planetary gear 14, and the transmission rod 9 is rotatably connected to the first scraper 11, the second scraper 12, the third scraper 13 and the planetary gear 14.

[0035] like Figure 3 and Figure 4As shown, a first interlocking mechanism 15 is arranged between the mixing and stirring blade 10 and the first scraper 11, a lifting sleeve 1001 is fixedly connected to the upper end of the mixing and stirring blade 10, the lower end of the transmission rod 9 is inserted into the lifting sleeve 1001, the transmission rod 9 is connected to the lifting sleeve 1001 by sliding up and down, a first central tube 1101 is arranged at the center of the first scraper 11, the transmission rod 9 passes through the first central tube 1101, the lifting sleeve 1001 is inserted into the first central tube 1101, the first interlocking mechanism 15 includes a first interlocking drive block 1501, the first interlocking drive block 1501 is located in the first central tube 1101, the lower end of the first interlocking drive block 1501 and the upper end of the lifting sleeve 1001 are both processed with first interlocking teeth 1502 that are interlocked with each other, the first interlocking teeth 1502 are one-way ratchet teeth, so they can be quickly disengaged without the occurrence of stuck teeth, and a first interlocking drive block 1501 is arranged between the first interlocking drive block 1501 and the lifting sleeve 1001. A first pressure spring 1503 is provided, and the first pressure spring 1503 is rotatably connected to the first center tube 1101 and the first interlocking drive block 1501 through a group of plane bearings, so that when the mixing and stirring blade 10 and the first scraper 11 rotate relative to each other, the first pressure spring 1503 will not be twisted, and the outer wall of the first interlocking drive block 1501 and the inner wall of the first center tube 1101 are respectively processed with first lifting and lowering threads 1504 that fit into each other, and a first limit spring 1505 is arranged above the first interlocking drive block 1501 and between the first center tube 1101, and the two ends of the first limit spring 1505 are respectively fixedly connected to the first interlocking drive block 1501 and the first center tube 1101, and when the first scraper 11 and the first interlocking drive block 1501 rotate relative to each other, the tension of the first limit spring 1505 can provide resistance, thereby controlling the resistance threshold of the first scraper 11 when rotating. The elastic coefficient of the first limit spring 1505 is greater than the elastic coefficient of the first pressure spring 1503 , so that when the first pressure spring 1503 is compressed before the first engaging tooth 1502 is engaged, the first limit spring 1505 will not be over-compressed.

[0036] like Figure 5 and Figure 6As shown, a second interlocking mechanism 16 is arranged between the first scraper 11 and the second scraper 12, a second center tube 1201 is arranged at the center of the second scraper 12, the upper end of the first center tube 1101 is inserted into the second center tube 1201, the second interlocking mechanism 16 includes a second interlocking drive block 1601, the second interlocking drive block 1601 is located in the second center tube 1201, and the upper end of the first center tube 1101 and the lower end of the second interlocking drive block 1601 are respectively processed with second interlocking teeth 1602 that interlock with each other, the second interlocking teeth 1602 are one-way ratchet teeth, so they can be quickly disengaged without the occurrence of stuck teeth, and a second pressure spring 1603 is arranged between the first center tube 1101 and the second interlocking drive block 1601, and the second pressure spring 1603 is respectively connected to the second center tube 1101 through a group of plane bearings The second center tube 1201 and the second interlocking drive block 1601 are rotatably connected, so as to prevent the second pressure spring 1603 from being twisted when the first scraper 11 and the second scraper 12 rotate relative to each other. The second interlocking drive block 1601 and the inner wall of the second center tube 1201 are respectively processed with second lifting threads 1604 that engage with each other. A second limit spring 1605 is arranged between the second interlocking drive block 1601 and the second center tube 1201. The two ends of the second limit spring 1605 are respectively fixedly connected with the second interlocking drive block 1601 and the second center tube 1201. When the second scraper 12 and the second interlocking drive block 1601 rotate relative to each other, the tension of the second limit spring 1605 can provide resistance, so as to control the resistance threshold when the second scraper 12 rotates. The elastic coefficient of the second limit spring 1605 is greater than the elastic coefficient of the second pressure spring 1603, so that the second pressure spring 1603 is more easily compressed, and the second engaging tooth 1602 can be easily engaged.

[0037] like Figure 7 and Figure 8As shown, a third interlocking mechanism 17 is arranged between the second scraper 12 and the third scraper 13, a third center tube 1301 is arranged at the center of the third scraper 13, the upper end of the second center tube 1201 is inserted into the third center tube 1301, the third interlocking mechanism 17 includes a third interlocking drive block 1701, the third interlocking drive block 1701 is located in the third center tube 1301, and the upper end of the second center tube 1201 and the lower end of the third interlocking drive block 1701 are respectively processed with third interlocking teeth 1702 that interlock with each other, the third interlocking teeth 1702 are one-way ratchet teeth, so they can be quickly disengaged without the occurrence of stuck teeth, a third pressure spring 1703 is arranged between the second center tube 1201 and the third interlocking drive block 1701, and the third pressure spring 1703 is respectively connected to the third center tube 1201 through a group of plane bearings. The third center tube 1301 and the third interlocking drive block 1701 are rotationally connected, which can prevent the third pressure spring 1703 from being twisted when the second scraper 12 and the third scraper 13 rotate relative to each other. The third lifting threads 1704 that fit together are respectively processed around the third interlocking drive block 1701 and on the inner wall of the third center tube 1301. A third limit spring 1705 is arranged above the third interlocking drive block 1701 and between the third center tube 1301. The two ends of the third limit spring 1705 are respectively fixedly connected to the third interlocking drive block 1701 and the third center tube 1301. When the third scraper 13 and the third interlocking drive block 1701 rotate relative to each other, the tension of the third limit spring 1705 can provide resistance, thereby controlling the resistance threshold when the second scraper 12 rotates. The elastic coefficient of the third limit spring 1705 is greater than the elastic coefficient of the third pressure spring 1703, so that the third pressure spring 1703 is compressed before the third limit spring 1705, thereby causing the third engaging tooth 1702 to mesh before the third interlocking drive block 1701 is pushed.

[0038] like Fig. 9 and Fig.10 As shown, a fourth interlocking mechanism 18 is arranged between the third scraper 13 and the planetary gear 14, the lower end of the planetary gear 14 is fixedly connected with a gear sleeve 1401, the upper end of the third center tube 1301 is inserted into the gear sleeve 1401, the fourth interlocking mechanism 18 includes a docking tube 1801, the docking tube 1801 is fixedly connected inside the gear sleeve 1401, the lower end of the docking tube 1801 and the upper end of the third center tube 1301 are respectively processed with fourth interlocking teeth 1802 that interlock with each other, and a fourth pressure spring 1803 is arranged between the gear sleeve 1401 and the third center tube 1301.

[0039] The second interlocking mechanism 16 and the third interlocking mechanism 17 function in the same manner as the first interlocking mechanism 15 .

[0040] Specifically, a sealing ring is used for waterproof sealing at the joint between the lifting sleeve 1001 and the first center tube 1101, a sealing ring is used for waterproof sealing at the joint between the first center tube 1101 and the second center tube 1201, a sealing ring is used for waterproof sealing at the joint between the second center tube 1201 and the third center tube 1301, and a sealing ring is used for waterproof sealing at the joint between the third center tube 1301 and the gear sleeve 1401, which can prevent water from entering the first center tube 1101, the second center tube 1201, the third center tube 1301 and the gear sleeve 1401 while ensuring rotation.

[0041] The first scraper 11, the second scraper 12 and the third scraper 13 are all made of rubber. The edges of the first scraper 11, the second scraper 12 and the third scraper 13 are thinner than the middle, and the edges of the first scraper 11, the second scraper 12 and the third scraper 13 are in contact with the inner wall of the mixing tank 2 when they rotate. In this way, the first scraper 11, the second scraper 12 and the third scraper 13 can use their soft edges to scrape off the paint adhered to the inner wall of the mixing tank 2 when they rotate.

[0042] Working principle: the mixing agitator 5, the first scraper 11, the second scraper 12, the third scraper 13 and the planetary gear 14 are respectively connected to each other through the first interlocking mechanism 15, the second interlocking mechanism 16, the third interlocking mechanism 17 and the fourth interlocking mechanism 18. At the beginning, the rotation of the mixing agitator 5 will not drive the first scraper 11, the second scraper 12, the third scraper 13 and the planetary gear 14 to rotate. As the rotation speed of the mixing agitator 5 increases, the upward driving force on the mixing agitator 5 itself will gradually increase, thereby compressing the first pressure spring 1503, so that the lifting sleeve 1001 and the first interlocking drive block 1501 is engaged with each other through the first engaging tooth 1502, so that the mixing agitator 5 and the first scraper 11 are locked, thereby driving the first scraper 11 to rotate together, increasing the stirring range and stirring effect, and at the same time using the first scraper 11 to scrape off the paint sticking to the cylinder wall. As the rotation speed increases, according to the same principle, it will drive the second scraper 12 and the third scraper 13 to rotate together in turn, and finally drive the planetary gear 14 to rotate, so that the mixing agitator 5, the first scraper 11, the second scraper 12, the third scraper 13 and the planetary gear 14 rotate as a whole around the central gear 6 to stir and mix.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing ingot mold coating for smelting silicon aluminum alloy, comprising a mixing machine base (1), a mixing tank (2) fixedly clamped on the mixing machine base (1), a lifting guide frame (3) provided on the mixing machine base (1), a lifting rod (4) fixedly connected to the lifting guide frame (3), and a mixing stirrer (5) provided at the lower end of the lifting rod (4), characterized in that: The mixing agitator (5) comprises a central gear (6). The mixing agitator (5) is rotatably connected to a rotating disk (7) via a bearing. One end of the rotating disk (7) is fixedly connected to a servo motor (8). A transmission rod (9) is fixedly connected to the servo motor (8). The lower end of the transmission rod (9) is connected to a mixing agitator blade (10). A first scraper (11), a second scraper (12) and a third scraper (13) are sequentially arranged above the mixing agitator blade (10). A planetary gear (14) is arranged above the third scraper blade (13). The central gear (6) and the planetary gear (14) are meshed with each other. The transmission rod (9) passes through the first scraper blade (11), the second scraper blade (12), the third scraper blade (13) and the planetary gear (14). The transmission rod (9) is rotatably connected to the first scraper blade (11), the second scraper blade (12), the third scraper blade (13) and the planetary gear (14). A first interlocking mechanism (15) is provided between the mixing and stirring blade (10) and the first scraper (11); the upper end of the mixing and stirring blade (10) is fixedly connected to a lifting sleeve (1001); the lower end of the transmission rod (9) is inserted into the lifting sleeve (1001); the transmission rod (9) and the lifting sleeve (1001) are slidably connected up and down; a first central tube (1101) is provided at the center of the first scraper (11); the transmission rod (9) passes through the first central tube (1101); the lifting sleeve (1001) is inserted into the first central tube (1101); the first interlocking mechanism (15) comprises a first interlocking drive block (1501); and the first interlocking drive block (1501) is located in the first center tube (1101), the lower end of the first interlocking drive block (1501) and the upper end of the lifting sleeve (1001) are processed with first interlocking teeth (1502) that interlock with each other, a first pressure spring (1503) is arranged between the first interlocking drive block (1501) and the lifting sleeve (1001), the outer wall of the first interlocking drive block (1501) and the inner wall of the first center tube (1101) are respectively processed with first lifting threads (1504) that interlock with each other, and a first limit spring (1505) is arranged between the top of the first interlocking drive block (1501) and the first center tube (1101); A second interlocking mechanism (16) is provided between the first scraper (11) and the second scraper (12), a third interlocking mechanism (17) is provided between the second scraper (12) and the third scraper (13), and a fourth interlocking mechanism (18) is provided between the third scraper (13) and the planetary gear (14). The functions of the second interlocking mechanism (16) and the third interlocking mechanism (17) are consistent with those of the first interlocking mechanism (15).

2. The ingot mold coating mixing and preparing device for silicon-aluminum alloy smelting according to claim 1, characterized in that: A second center tube (1201) is arranged at the center of the second scraper (12), the upper end of the first center tube (1101) is inserted into the second center tube (1201), the second interlocking mechanism (16) comprises a second interlocking drive block (1601), the second interlocking drive block (1601) is located in the second center tube (1201), and the upper end of the first center tube (1101) and the lower end of the second interlocking drive block (1601) are respectively processed with second interlocking teeth (1602) that interlock with each other, a second pressure spring (1603) is arranged between the first center tube (1101) and the second interlocking drive block (1601), and second lifting threads (1604) that interlock with each other are respectively processed around the second interlocking drive block (1601) and on the inner wall of the second center tube (1201), and a second limit spring (1605) is arranged between the upper part of the second interlocking drive block (1601) and the second center tube (1201).

3. The ingot mold coating mixing and preparing device for silicon-aluminum alloy smelting according to claim 2, characterized in that: A third center tube (1301) is arranged at the center of the third scraper (13), the upper end of the second center tube (1201) is inserted into the third center tube (1301), the third interlocking mechanism (17) comprises a third interlocking drive block (1701), the third interlocking drive block (1701) is located in the third center tube (1301), and the upper end of the second center tube (1201) and the lower end of the third interlocking drive block (1701) are respectively processed with third interlocking teeth (1702) that interlock with each other, a third pressure spring (1703) is arranged between the second center tube (1201) and the third interlocking drive block (1701), and third lifting threads (1704) that interlock with each other are respectively processed around the third interlocking drive block (1701) and on the inner wall of the third center tube (1301), and a third limit spring (1705) is arranged between the top of the third interlocking drive block (1701) and the third center tube (1301).

4. The ingot mold coating mixing and preparing device for silicon aluminum alloy smelting according to claim 3, characterized in that: The lower end of the planetary gear (14) is fixedly connected to a gear sleeve (1401), the upper end of the third center tube (1301) is inserted into the gear sleeve (1401), and the fourth interlocking mechanism (18) comprises a docking tube (1801), which is fixedly connected to the inside of the gear sleeve (1401), and the lower end of the docking tube (1801) and the upper end of the third center tube (1301) are respectively processed with fourth interlocking teeth (1802) that interlock with each other, and a fourth pressure spring (1803) is arranged between the gear sleeve (1401) and the third center tube (1301).

5. The ingot mold coating mixing and preparing device for silicon-aluminum alloy smelting according to claim 4, characterized in that: The first pressure spring (1503) is rotatably connected to the first center tube (1101) and the first interlocking drive block (1501) respectively through a group of plane bearings, the second pressure spring (1603) is rotatably connected to the second center tube (1201) and the second interlocking drive block (1601) respectively through a group of plane bearings, and the third pressure spring (1703) is rotatably connected to the third center tube (1301) and the third interlocking drive block (1701) respectively through a group of plane bearings.

6. The ingot mold coating mixing and preparing device for silicon-aluminum alloy smelting according to claim 4, characterized in that: The elastic coefficient of the first limit spring (1505) is greater than the elastic coefficient of the first pressure spring (1503), the elastic coefficient of the second limit spring (1605) is greater than the elastic coefficient of the second pressure spring (1603), and the elastic coefficient of the third limit spring (1705) is greater than the elastic coefficient of the third pressure spring (1703).

7. The ingot mold coating mixing and preparing device for silicon-aluminum alloy smelting according to claim 4, characterized in that: The first engaging tooth (1502), the second engaging tooth (1602) and the third engaging tooth (1702) are all one-way ratchet teeth.

8. The device for mixing and preparing ingot mold coating for smelting silicon-aluminum alloy according to claim 4, characterized in that: The two ends of the first limit spring (1505) are respectively fixedly connected to the first interlocking drive block (1501) and the first center tube (1101), the two ends of the second limit spring (1605) are respectively fixedly connected to the second interlocking drive block (1601) and the second center tube (1201), and the two ends of the third limit spring (1705) are respectively fixedly connected to the third interlocking drive block (1701) and the third center tube (1301).

9. The device for mixing and preparing ingot mold coating for smelting silicon-aluminum alloy according to claim 4, characterized in that: A sealing ring is used for waterproof sealing at the joint between the lifting sleeve (1001) and the first center tube (1101), a sealing ring is used for waterproof sealing at the joint between the first center tube (1101) and the second center tube (1201), a sealing ring is used for waterproof sealing at the joint between the second center tube (1201) and the third center tube (1301), and a sealing ring is used for waterproof sealing at the joint between the third center tube (1301) and the gear sleeve (1401).

10. The device for mixing and preparing ingot mold coating for smelting silicon-aluminum alloy according to claim 1, characterized in that: The first scraper (11), the second scraper (12) and the third scraper (13) are all made of rubber; the edges of the first scraper (11), the second scraper (12) and the third scraper (13) are thinner than the middle; and when the first scraper (11), the second scraper (12) and the third scraper (13) rotate, the edges contact the inner wall of the mixing tank (2).

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