Hammerhead anti-adhesion double-impurity-removing device of aluminum electrolysis cell crust breaking machine

Abstract

The utility model discloses a hammerhead anti-adhesion double-impurity-cleaning device of an aluminum electrolysis cell crust breaking machine. The hammerhead anti-adhesion double-impurity-cleaning device comprises a hammerhead lifting mechanism, a hammerhead mechanism and a hammerhead cleaning mechanism, the hammer head lifting mechanism comprises an air cylinder (1) and a hammer head channel (2); the hammer head mechanism comprises a hammer head body (3) and a hammer head connecting rod (4); the hammerhead cleaning mechanism comprises a double-hammerhead scraper (5) and a cage-shaped connecting sleeve (6); the double-cleaning mechanism is arranged outside the hammer head mechanism, the upper cutting edge and the lower cutting edge of the double-hammer-head scraper (5) clean the two sides of a hammer body in batches, the effect of automatically cleaning the hammer head is achieved, adhesion of electrolyte is effectively reduced, and the service life of the hammer head is prolonged; the cross section of each supporting strip (6-1) is a triangular prism, the top point of the inner side of each supporting strip (6-1) coincides with the outer edge of the corresponding through hole (5-1), the cage-shaped connecting sleeve (6) has enough strength on the premise that the overall size is not increased, the supporting strips (6-1) make linear contact with the hammer head body (3), and the scraping blind area is small.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum, and is a double impurity cleaning device for preventing the hammer head from sticking to a shell breaker for an aluminum electrolytic cell. Background Art

[0002] Electrolytic aluminum is obtained by electrolysis. During the aluminum electrolysis production process, it is necessary to continuously add materials to the electrolytic cell, such as alumina, aluminum fluoride, etc. Since the surface of the electrolytic cell is usually covered with a crust composed of solidified electrolyte, the crust needs to be penetrated before adding materials, and the materials are added into the cell through the opened holes.

[0003] At present, the cylinder 1 is mainly used to open the crust to form a hole. However, during the shelling operation of the shelling hammer, the electrolyte will adhere to the surface of the shelling hammer. After the electrolyte solidifies, the shell head will form a sticky bag. As the number of blows increases, the sticky bag will continue to increase. When the sticky bag is too large, it will hinder the lifting and lowering of the shelling hammer head, and it is also easy to cause damage to the cylinder 1. If it is stuck and immersed in high-temperature electrolyte for a long time, the shelling hammer head will be continuously burned, which will greatly shorten the service life of the hammer head and affect the striking work of the shelling hammer head; construction personnel usually need to frequently clean the electrolyte that has been packed on the shelling hammer head. Workers generally use a hammer to knock off the knot, which not only increases the labor intensity but also causes certain losses to the shelling hammer head, reducing the service life of the shelling hammer head.

[0004] In order to solve the above problems, there are many corresponding measures in the prior art, mainly including three means:

[0005] 1. An automatic beating and vibration device is set at the hammer head, and the hammer head and its telescopic rod are used to drive the beating and vibration device during the process of retracting after the beating is completed, so that it can automatically beat the hammer head and shake off the electrolyte adhered to the hammer head, for example: 202011637399.6. This device can automatically process the shell head package, and greatly reduce the labor intensity of the electrolyzer beating the shell head package and the tank maintenance worker replacing the shell hammer head. However, there is still a loss caused by the beating hammer head, and the service life of the shell hammer head cannot be guaranteed;

[0006] 2. An annular fixing seat is provided to accommodate the hammer head passing through, and an automatic cleaning assembly of the hammer head is provided below the fixing seat. The automatic cleaning assembly includes a plurality of retractable scrapers, which are tightly attached to the surface of the hammer head during the retraction of the hammer head, so as to scrape off the electrolyte adhered to the surface of the hammer head; for example: 202022189184.4, the outer surface of the scraper is in contact with the outer surface of the hammer head, and the outer surface of the connecting shaft is sleeved with a torsion spring. The utility model is convenient for automatically cleaning the hammer head, effectively reduces the adhesion of the electrolyte, and prolongs the service life of the hammer head. However, when the scrapers are stretched out to work and scrape between the surfaces of the hammer head, they are separated and spaced from each other, and the area corresponding to the interval on the surface of the hammer head cannot be scraped, resulting in each time the hammer head contracts, a part of the electrolyte will adhere to it for recovery. After repeated multiple times, the electrolyte will cause the space between the hammer head and the fixing seat to be blocked, blocking the hammer head and making it impossible to retract and work;

[0007] 3. Blowing the electrolyte adhered to the hammer head by wind to make it fall off; for example: 202023327998.6, it can greatly reduce the growth rate of the shell head bag, remove part of the liquid electrolyte, and greatly reduce the labor intensity of the electrolyzer knocking the shell head bag and the tank maintenance worker replacing the shell hammer head. At the same time, it reduces the phenomenon that the shell breaking mechanism cannot break the shell normally due to the growth of the shell head bag, and effectively extends the service life of the electrolytic cell shell breaking hammer head and cylinder 1; but the problem is whether the gas transmission system can ensure the sealing and safety under high-pressure environment, and the gas directly acts on the hammer head position. Can it blow it off before the electrolyte cools and bonds, and will it adhere to the hammer head faster because the electrolyte accelerates heat dissipation and cooling?

[0008] Therefore, a new type of hammer head cleaning device is needed to reduce the growth of aluminum electrolytic shell head package to solve the above-mentioned existing problems. Summary of the invention

[0009] In order to solve the above problems, the utility model provides a double impurity cleaning device for hammer head anti-adhesion of aluminum electrolytic cell shell breaker.

[0010] The utility model adopts the following technical scheme: a hammer head anti-adhesion double impurity cleaning device for an aluminum electrolytic cell shell breaker, comprising a hammer head lifting mechanism, a hammer head mechanism and a hammer head cleaning mechanism, characterized in that:

[0011] The hammer lifting mechanism includes a cylinder 1 and a hammer channel 2 connected to the cylinder 1, wherein the hammer channel 2 is a hollow circular tube, and its inner diameter is larger than the hammer mechanism;

[0012] The hammer mechanism includes a hammer body 3 and a hammer connecting rod 4 connected thereto. The hammer body 3 is arranged at the bottom, and its upper end is connected to the hammer connecting rod 4. The hammer connecting rod 4 is connected to the telescopic rod of the cylinder 1. The diameter of the hammer body 3 is larger than that of the hammer connecting rod 4, and smaller than the inner diameter of the hammer channel 2.

[0013] The hammer cleaning mechanism is connected to the lower end of the hammer channel 2, and includes a double hammer scraper 5 and a cage-shaped connecting sleeve 6. The upper end of the cage-shaped connecting sleeve 6 is fixed to the outer side of the lower end of the hammer channel 2, and the lower end of the cage-shaped connecting sleeve 6 is provided with the outer edge of the double hammer scraper 5; the sleeve body of the cage-shaped connecting sleeve 6 includes a plurality of support bars 6-1 that pass through the upper end and the lower end, and the plurality of support bars 6-1 are used as a reference to form a circular tubular structure, and the inner side of any support bar 6-1 points to the axial position of the circular tubular structure surrounded by the support bars 6-1;

[0014] The double hammer scraper 5 is fixedly mounted at the lower end of the cage-shaped connecting sleeve 6, and is located inside the circular tubular structure surrounded by the support bar 6-1. Its shape is two truncated cones with lower bottoms connected to each other. A through hole 5-1 that runs through the upper and lower parts is provided inside the assembly formed by the two truncated cones. The axis of the through hole 5-1 coincides with the two truncated cones, and its radius is consistent with the radius of the bottom surfaces of the two truncated cones, and forms two cutting edges facing upward and downward with the upper truncated cone 5-2 and the lower inclined surface, respectively.

[0015] In addition, there is a clearance fit between the through hole 5-1 and the hammer body 3 passing through the through hole 5-1; the lower ends of all the support bars 6-1 in the cage-shaped connecting sleeve 6 are fixedly connected to the inclined surface of the upper side truncated cone 5-2, wherein the outer side surface of the support bar 6-1 coincides with the outer edge of the lower bottom surface of the truncated cone, and the inner side surface of the support bar 6-1 is located between the outer edge of the upper bottom surface and the outer edge of the lower bottom surface or aligned with the outer edge of the upper bottom surface.

[0016] Preferably, the support bar 6-1 is a quadrangular prism, and its outer and inner sides are both arc-shaped, wherein the arc of the outer side coincides with the outer edge of the double hammer scraper 5, and the inner side is aligned with the outer edge of the upper bottom surface, that is, the arc of the inner side coincides with the through hole 5-1 in the double hammer scraper 5. This structure will make it difficult to clean the electrolyte adhered to the contact area between the hammer body 3 and the inner side of the support bar 6-1.

[0017] Preferably, the support bar 6-1 is a quadrangular prism, and its outer side surface is arc-shaped and coincides with the outer edge of the double hammer scraper 5; the inner side surface is a plane, located on the inclined plane between the outer edge of the upper bottom surface of the upper side cone 5-2 and the outer edge of the lower bottom surface, and a buffer member 7 with a triangular cross-section is provided between the inner side surface of the support bar 6-1 and the outer edge of the upper bottom surface of the upper side cone 5-2 to prevent the scraped electrolyte from accumulating and blocking in the gap between the inner side surface of the support bar 6-1 and the outer edge of the upper bottom surface of the upper side cone 5-2 when the upper end cutting edge of the double hammer scraper 5 scrapes the electrolyte adhered to the surface of the hammer body 3, which is beneficial to chip removal. In order to avoid direct contact between the inner side surface of the support bar 6-1 and the hammer body 3, this structure requires that the thickness of the support bar 6-1 be reduced. Although the blind spot of scraping is eliminated, the reduction in the thickness of the support bar 6-1 will cause the strength of the cage-shaped connecting sleeve 6 to be reduced without increasing the overall volume.

[0018] Preferably, the support bar 6-1 is a triangular prism, the bottom surface of its cross section faces outward and the vertex faces inward, both pointing to the axial position of the circular tubular structure surrounded by the support bar 6-1; wherein its bottom surface, that is, the outer side surface is arc-shaped, coincides with the outer edge of the double hammer scraper 5; the inner vertex is aligned with the outer edge of the upper bottom surface of the upper frustum 5-2, that is, the inner vertex coincides with the outer edge of the through hole 5-1; this structure realizes that the strength change of the cage-shaped connecting sleeve 6 is small without increasing the overall volume, and the contact between the support bar 6-1 and the hammer body 3 is line contact, the scraping blind area is small, and the adjacent parts of the contact area are all inclined smooth structures, which eliminates the space that may cause electrolyte accumulation and has a good overall cleaning effect.

[0019] Preferably, the upper and lower cones in the double hammer scraper 5 are exactly the same in shape and size, and the angle between the generatrix and the bottom edge is 45°-60°; if the angle is too large, the bevel becomes steeper, and the cutting edge formed by it and the through hole 5-1 becomes thinner as a whole, and the strength is reduced, which may cause damage to the cutting edge; conversely, if the angle is too small, the bevel becomes gentler, which is not conducive to electrolyte chip removal after scraping, and will increase the running resistance of the hammer.

[0020] Preferably, the radius of the through hole 5-1 of the upper frustum 5-2 in the double hammer head scraper 5 is smaller than the radius of the through hole 5-1 of the lower frustum 5-3, and the generatrix inclination angle of the upper frustum 5-2 is larger than the generatrix inclination angle of the lower frustum 5-3; the lower frustum 5-3 faces the hammer body 3 that shrinks back after completing the striking, and there is a lot of electrolyte adhered to it, and the cutting edge on the lower frustum 5-3 cannot scrape it all off at one time, which is a huge challenge to the force borne by the edge and the power required for the contraction of the hammer body 3. It can only be required to scrape off most of the electrolyte on the hammer body 3. Therefore, the size of the through hole 5-1 on the lower frustum 5-3 is larger than that of the upper frustum 5-2, and the generatrix inclination angle is smaller than that of the upper frustum 5-2; the upper frustum 5-2 scrapes off the residual electrolyte on the surface of the hammer body 3 when it falls for the second time, and the processing amount and force it faces are much smaller, so the radius of its through hole 5-1 is relatively small, and the generatrix inclination angle is relatively large.

[0021] Preferably, the radius of the through hole 5-1 of the upper frustum 5-2 in the double hammer scraper 5 is 0.5-1.0 mm larger than the radius of the hammer body 3, and the generatrix inclination angle of the upper frustum 5-2 is 55°-60°; the radius of the through hole 5-1 of the lower frustum 5-3 in the double hammer scraper 5 is 1.0-2.0 mm larger than the radius of the hammer body 3, and the generatrix inclination angle of the upper frustum 5-2 is 45°-55°. Beneficial Effects

[0022] ① The utility model arranges a double cleaning mechanism outside the hammer mechanism, and cleans both sides of the pituitary body in batches through the upper and lower cutting edges of the double hammer scraper 5, thereby achieving the effect of automatically cleaning the hammer, effectively reducing the adhesion of electrolyte, and extending the service life of the hammer.

[0023] ② The connection modes of the double hammer scraper 5 and the support bar 6-1 in the outer cage-shaped connecting sleeve 6 in the utility model are various, and each has its own characteristics. Among them, the optimal solution adopts the support bar 6-1 with a triangular prism cross-section, and its inner vertex coincides with the outer edge of the through hole 5-1, so that the cage-shaped connecting sleeve 6 has sufficient strength without increasing the overall volume, and the contact between the support bar 6-1 and the hammer body 3 is line contact, the scraping blind area is small, and the adjacent parts of the contact area are all inclined smooth structures, which eliminates the space that may cause electrolyte accumulation and has a good overall cleaning effect.

[0024] ③ The utility model has a simple structure, is convenient for batch production and processing, is simple and quick to install and disassemble, is easy to maintain, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model in the extended state.

[0026] Figure 2It is a schematic diagram of the structure of the utility model in a contracted state.

[0027] Figure 3 It is a schematic diagram of the cutaway structure of the utility model.

[0028] Figure 4 It is a schematic diagram of the positions of the hammer body and the double hammer scraper.

[0029] Figure 5 It is a schematic diagram of the connection structure between the support bar and the double hammer scraper described in Example 1.

[0030] Figure 6 yes Figure 5 Top view of the .

[0031] Figure 7 This is a schematic diagram of the connection structure between the support bar and the double hammer scraper described in Example 2.

[0032] Figure 8 yes Figure 7 Top view of the .

[0033] Fig. 9 yes Figure 7 A partial enlarged view of .

[0034] Fig.10 This is a schematic diagram of the connection structure between the support bar and the double hammer scraper described in Example 3.

[0035] Fig.11 yes Fig.10 Top view of the .

[0036] Fig.12 yes Fig.10 A partial enlarged view of .

[0037] Fig.13 It is a top view of the connection structure between the support bar and the double hammer scraper in Example 4.

[0038] In the figure: cylinder 1, hammer channel 2, hammer body 3, hammer connecting rod 4, double hammer scraper 5, through hole 5-1, upper frustum 5-2, lower frustum 5-3, cage-shaped connecting sleeve 6, support bar 6-1, buffer member 7. DETAILED DESCRIPTION

[0039] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0040] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. The drawings are all in a very simplified form and use inaccurate ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. Example 1

[0041] like Figure 1-6 As shown, the hammer anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker described in this embodiment includes a hammer lifting mechanism, a hammer mechanism and a hammer cleaning mechanism; the hammer lifting mechanism includes a cylinder 1 and a hammer channel 2 connected to the cylinder 1, and the hammer channel 2 is a hollow circular tube, and its internal diameter is larger than the hammer mechanism;

[0042] The hammer mechanism includes a hammer body 3 and a hammer connecting rod 4 connected thereto. The hammer body 3 is arranged at the bottom, and its upper end is connected to the hammer connecting rod 4. The hammer connecting rod 4 is connected to the telescopic rod of the cylinder 1. The diameter of the hammer body 3 is larger than that of the hammer connecting rod 4, and smaller than the inner diameter of the hammer channel 2.

[0043] The hammer cleaning mechanism is connected to the lower end of the hammer channel 2, and includes a double hammer scraper 5 and a cage-shaped connecting sleeve 6. The upper end of the cage-shaped connecting sleeve 6 is fixed to the outer side of the lower end of the hammer channel 2, and the lower end of the cage-shaped connecting sleeve 6 is provided with the outer edge of the double hammer scraper 5; the sleeve body of the cage-shaped connecting sleeve 6 includes a plurality of support bars 6-1 that pass through the upper end and the lower end, and the plurality of support bars 6-1 are used as a reference to form a circular tubular structure, and the inner side of any support bar 6-1 points to the axial position of the circular tubular structure surrounded by the support bars 6-1;

[0044] The double hammer scraper 5 is fixedly mounted at the lower end of the cage-shaped connecting sleeve 6, and is located inside the circular tubular structure surrounded by the support bar 6-1. Its shape is two truncated cones with lower bottoms connected to each other. A through hole 5-1 that runs through the upper and lower parts is provided inside the assembly formed by the two truncated cones. The axis of the through hole 5-1 coincides with the two truncated cones, and its radius is consistent with the radius of the bottom surfaces of the two truncated cones, and forms two cutting edges facing upward and downward with the upper truncated cone 5-2 and the lower inclined surface, respectively.

[0045] In addition, there is a clearance fit between the through hole 5-1 and the hammer body 3 passing through the through hole 5-1; the lower ends of all the support bars 6-1 in the cage-shaped connecting sleeve 6 are fixedly connected to the inclined surface of the upper side truncated cone 5-2, wherein the outer side surface of the support bar 6-1 coincides with the outer edge of the lower bottom surface of the truncated cone, and the inner side surface of the support bar 6-1 is located between the outer edge of the upper bottom surface and the outer edge of the lower bottom surface or aligned with the outer edge of the upper bottom surface.

[0046] In addition, the upper and lower cones in the double hammer head scraper 5 have exactly the same shape and size, and the angle between the generatrix and the bottom edge is 45°. Example 2

[0047] like Figure 1-4 As shown in Figures 7-9, the hammer head anti-adhesion double cleaning device of the aluminum electrolytic cell shelling machine described in this embodiment has a structure that is basically the same as that described in Example 1, with the difference that: the support bar 6-1 is a quadrangular prism, and its outer side surface and inner side surface are both arc-shaped, wherein the arc shape of the outer side surface coincides with the outer edge of the double hammer head scraper 5, and the inner side surface is aligned with the outer edge of the upper bottom surface, that is, the arc shape of the inner side surface coincides with the through hole 5-1 in the double hammer head scraper 5. This structure will make it difficult to clean the electrolyte adhered to the contact area between the hammer head body 3 and the inner side surface of the support bar 6-1.

[0048] In addition, the upper and lower cones in the double hammer head scraper 5 have exactly the same shape and size, and the angle between the generatrix and the bottom edge is 50°. Example 3

[0049] like Figure 1-4 As shown in 10-12, the hammer head anti-adhesion double cleaning device of the aluminum electrolytic cell shelling machine described in this embodiment has a structure that is basically the same as that described in Example 1, with the difference that: the support bar 6-1 is a quadrangular prism, and its outer side surface is arc-shaped and coincides with the outer edge of the double hammer head scraper 5; the inner side surface is a plane, located on the inclined surface between the outer edge of the upper bottom surface of the upper side truncated cone 5-2 and the outer edge of the lower bottom surface, and a buffer with a triangular cross-section is provided between the inner side surface of the support bar 6-1 and the outer edge of the upper bottom surface of the upper side truncated cone 5-2. Component 7 prevents the scraped electrolyte from accumulating and blocking in the gap between the inner side surface of the support bar 6-1 and the outer edge of the upper bottom surface of the upper cone 5-2 when the upper edge of the double hammer scraper 5 is scraping the electrolyte adhered to the surface of the hammer body 3, which is beneficial to chip removal. In order to avoid direct contact between the inner side surface of the support bar 6-1 and the hammer body 3, this structure requires a reduction in the thickness of the support bar 6-1. Although the blind spot of scraping is eliminated, the reduction in the thickness of the support bar 6-1 will cause the strength of the cage-like connecting sleeve 6 to be reduced without increasing the overall volume.

[0050] In addition, the upper and lower cones in the double hammer head scraper 5 have exactly the same shape and size, and the angle between the generatrix and the bottom edge is 55°. Example 4

[0051] like Figure 1-4As shown in Figures 13, the hammer head anti-adhesion double cleaning device of the aluminum electrolytic cell shelling machine described in this embodiment has a structure that is basically the same as that described in Example 1, with the difference that: the support bar 6-1 is a triangular prism, the bottom surface of its cross section faces outward and the vertex faces inward, both pointing to the axial position of the circular tubular structure surrounded by the support bar 6-1; wherein its bottom surface, that is, the outer side surface is arc-shaped, coincides with the outer edge of the double hammer head scraper 5; the inner vertex is aligned with the outer edge of the upper bottom surface of the upper side frustum 5-2, that is, the inner vertex coincides with the outer edge of the through hole 5-1; this structure realizes that the strength change of the cage-shaped connecting sleeve 6 is small without increasing the overall volume, and the contact between the support bar 6-1 and the hammer head body 3 is line contact, the scraping blind area is small, and the adjacent parts of the contact area are all inclined smooth structures, which eliminates the space that may cause electrolyte accumulation and has a good overall cleaning effect.

[0052] In addition, the upper and lower cones in the double hammer head scraper 5 have exactly the same shape and size, and the angle between the generatrix and the bottom edge is 60°.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A hammer head anti-adhesion double impurity cleaning device for an aluminum electrolytic cell shell breaker, comprising a hammer head lifting mechanism, a hammer head mechanism and a hammer head cleaning mechanism, characterized in that: The hammer lifting mechanism comprises a cylinder (1) and a hammer channel (2) connected to the cylinder (1); the hammer channel (2) is a hollow circular tube, the inner diameter of which is larger than that of the hammer mechanism; The hammer mechanism comprises a hammer body (3) and a hammer connecting rod (4) connected thereto. The hammer body (3) is arranged at the bottom and its upper end is connected to the hammer connecting rod (4). The hammer connecting rod (4) is connected to the telescopic rod of the cylinder (1). The diameter of the hammer body (3) is larger than that of the hammer connecting rod (4) and smaller than the inner diameter of the hammer channel (2). The hammer cleaning mechanism is connected to the lower end of the hammer channel (2), and comprises a double hammer scraper (5) and a cage-shaped connecting sleeve (6), wherein the upper end of the cage-shaped connecting sleeve (6) is fixed to the outer side of the lower end of the hammer channel (2), and the lower end of the cage-shaped connecting sleeve (6) is sleeved with the outer edge of the double hammer scraper (5); the sleeve body of the cage-shaped connecting sleeve (6) comprises a plurality of support bars (6-1) penetrating the upper end and the lower end, wherein the plurality of support bars (6-1) form a circular tubular structure with the outer edge of the lower end of the hammer channel (2) as a reference, and the inner side of any support bar (6-1) points to the axial center position of the circular tubular structure formed by the support bars (6-1); The double hammer scraper (5) is fixedly mounted at the lower end of the cage-shaped connecting sleeve (6) and is located inside the circular tubular structure surrounded by the support strips (6-1). Its outer shape is two truncated cones with lower bottoms connected to each other. A through hole (5-1) that runs through the upper and lower parts is provided inside the assembly formed by the two truncated cones. The axis of the through hole (5-1) coincides with the two truncated cones, and its radius is consistent with the radius of the bottom surfaces of the two truncated cones. Two cutting edges facing upward and downward are formed respectively with the upper truncated cone (5-2) and the lower inclined surface. In addition, there is a clearance fit between the through hole (5-1) and the hammer body (3) passing through the through hole (5-1); the lower ends of all the support bars (6-1) in the cage-shaped connecting sleeve (6) are fixedly connected to the inclined surface of the upper truncated cone (5-2), wherein the outer side surface of the support bar (6-1) coincides with the outer edge of the lower bottom surface of the truncated cone, and the inner side surface of the support bar (6-1) is located between the outer edge of the upper bottom surface and the outer edge of the lower bottom surface or is aligned with the outer edge of the upper bottom surface.

2. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to claim 1 is characterized in that: The support bar (6-1) is a quadrangular prism, and its outer side surface and inner side surface are both arc-shaped, wherein the arc shape of the outer side surface matches the outer edge of the double hammer scraper (5), and the inner side surface is aligned with the outer edge of the upper bottom surface, that is, the arc shape of the inner side surface matches the through hole (5-1) in the double hammer scraper (5).

3. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to claim 1 is characterized in that: The support bar (6-1) is a quadrangular prism, the outer side surface of which is arc-shaped and coincides with the outer edge of the double hammer scraper (5); the inner side surface is a plane, located on the inclined surface between the outer edge of the upper bottom surface and the outer edge of the lower bottom surface of the upper truncated cone (5-2), and a buffer component (7) with a triangular cross-section is provided between the inner side surface of the support bar (6-1) and the outer edge of the upper bottom surface of the upper truncated cone (5-2).

4. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to claim 1 is characterized in that: The support bar (6-1) is a triangular prism, the bottom surface of its cross section faces outwards and the apex faces inwards, both pointing to the axis position of the circular tubular structure surrounded by the support bar (6-1); wherein its bottom surface, i.e., the outer side surface, is arc-shaped and coincides with the outer edge of the double hammer head scraper (5); and the inner apex is aligned with the outer edge of the upper bottom surface of the upper frustum (5-2), i.e., the inner apex coincides with the outer edge of the through hole (5-1).

5. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to any one of claims 1 to 4, characterized in that: The upper and lower cones in the double hammer scraper (5) are of exactly the same shape and size, and the angle between the generatrix and the bottom edge is 45°-60°.

6. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to claim 1 is characterized in that: The radius of the through hole (5-1) of the upper frustum (5-2) in the double hammer head scraper (5) is smaller than the radius of the through hole (5-1) of the lower frustum (5-3), and the generatrix inclination angle of the upper frustum (5-2) is greater than the generatrix inclination angle of the lower frustum (5-3).

7. The hammer head anti-adhesion double impurity cleaning device of the aluminum electrolytic cell shell breaker according to claim 6 is characterized in that: The radius of the through hole (5-1) of the upper truncated cone (5-2) in the double hammer head scraper (5) is 0.5-1.0 mm larger than the radius of the hammer head body (3), and the generatrix inclination angle of the upper truncated cone (5-2) is 55°-60°; the radius of the through hole (5-1) of the lower truncated cone (5-3) in the double hammer head scraper (5) is 1.0-2.0 mm larger than the radius of the hammer head body (3), and the generatrix inclination angle of the upper truncated cone (5-2) is 45°-55°.

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