Plough harrow device for thickener and thickener

Abstract

The plow harrow device comprises a main shaft, a scraper piece and a plow harrow arm, a coupling flange is arranged at one end of the main shaft, and a first connecting part is arranged on the peripheral wall of the main shaft; a first matching part is arranged on the scraper piece and is detachably connected to the end face of the other end of the main shaft; a second matching part is arranged at the end part of the plow harrow wall, the second matching part is detachably connected to the first connecting part, the plow harrow arm extends in the radial direction of the main shaft, and a plurality of harrow teeth which are arranged at intervals in the extending direction are arranged on the plow harrow arm; and the main shaft, the scraper piece and the plow rake arm are corrosion-resistant pieces. According to the plow harrow device disclosed by the utility model, the maintainability and the production safety of the thickener are obviously improved, and the maintenance cost and the downtime are reduced.

Description

Technical Field

[0001] The utility model relates to the field of thickeners, in particular to a plowshare device for a thickener and the thickener. Background Art

[0002] In industrial production, sulfate gypsum thickeners are often used to process acidic solutions with a pH of 1-3. To protect the equipment from corrosion, the plowshares in the thickener typically utilize a carbon steel base with a rubber lining. However, due to the bulk of the thickener, hot-vulcanizing the rubber lining throughout the entire structure is difficult. Therefore, individual components are typically hot-vulcanized, with weld points reserved at both ends for on-site assembly. After welding, the welds are smoothed, and the unvulcanized rubber lining welds are cold-glued to ensure the plowshare's internal framework is completely encased in rubber.

[0003] During routine maintenance and overhaul, the rubber lining of the thickener plowshare often faces problems such as wear, aging, and cracking. This causes the carbon steel skeleton to come into direct contact with the acid, which in turn causes corrosion, accelerates skeleton wear, and ultimately causes skeleton deformation or even fracture, seriously affecting the normal operation of the thickener. Currently, the repair of the plowshare rubber lining mainly relies on local cold glue repair technology, but its service life is much lower than that of hot-vulcanized rubber lining and is affected by many factors. After repair, it still needs to wait 24 hours for curing. If the corrosion is severe, it needs to be replaced. This involves a series of complex operations such as stripping the glue, grinding, welding, relining, and curing. The maintenance time is long, and hot work is carried out in the sulfuric acid hazardous area, which poses a major safety hazard. Utility Model Content

[0004] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a plowing and rake device for a thickener. The plowing and rake device of the present invention significantly improves the maintainability and production safety of the thickener, reducing maintenance costs and downtime.

[0005] The utility model also provides a thickener with the above-mentioned plowshare device.

[0006] According to the utility model, a plow device is used for a thickener, and the plow device includes: a main shaft, a coupling flange is provided at one end of the main shaft, and a first connecting portion is provided on the outer peripheral wall of the main shaft; a scraper member, a first matching portion is provided on the scraper member, and the first matching portion is detachably connected to the other end face of the main shaft; a plow arm, a second matching portion is provided at the end of the plow wall, and the second matching portion is detachably connected to the first connecting portion, the plow arm extends in the radial direction of the main shaft, and the plow arm is provided with a plurality of rake teeth arranged at intervals in the extension direction; wherein, the main shaft, the scraper member and the plow arm are all constructed as corrosion-resistant parts.

[0007] According to the utility model, the plowing device is used for a thickener. The plowing device includes a main shaft, a scraper member and a plowing arm. A coupling flange is provided at one end of the main shaft. The coupling flange is used to connect the main shaft with a driving device so as to transmit power to the main shaft, drive the main shaft to rotate, and drive the scraper member and the plowing arm to complete the predetermined material processing task.

[0008] The scraper element is equipped with a first mating portion that is removably connected to the other end of the main shaft, facilitating replacement and maintenance. The scraper element is formed with a scraping surface suitable for scraping material. At the discharge port located in the center of the thickener (directly below the main shaft), the scraper element rotates with the main shaft to scrape accumulated material, effectively preventing accumulation and blockage at the discharge port and ensuring smooth material discharge.

[0009] A first connecting portion is provided on the outer peripheral wall of the main shaft, and a second matching portion is provided at the end of the plow wall. The second matching portion is detachably connected to the first connecting portion, so that the plow arm can be flexibly installed and disassembled on the main shaft, making it convenient to replace and repair the plow arm according to actual needs.

[0010] The rake arm extends in the radial direction of the main shaft, and is provided with a plurality of rake teeth arranged at intervals in the extension direction. The rake teeth rotate with the rotation of the main shaft, so that the plurality of rake teeth stir the material and guide the material to gather in the direction of the main shaft through its specific arrangement and angle design.

[0011] The main shaft, scraper, and rake arms are all constructed to be corrosion-resistant, eliminating the problems associated with wear, aging, and cracking of the rubber lining in related technologies. Direct contact with the acid solution eliminates the need for a rubber lining, simplifying the manufacturing process and reducing production costs. The complex rubber lining replacement process and the long curing time required are eliminated, significantly reducing maintenance and downtime, and improving production efficiency. Furthermore, hot work in sulfuric acid-hazardous areas is avoided, significantly reducing safety hazards and ensuring production safety.

[0012] The scraper and the rake arm can be detachably connected to the main shaft. When a component in the rake device is damaged, it can be easily replaced or repaired. The modular design greatly improves the maintainability and flexibility of the equipment.

[0013] According to some embodiments of the present invention, the main shaft, the scraper member and the rake arm are all constructed as corrosion-resistant parts made of metal.

[0014] According to some embodiments of the present invention, the first connecting portion is formed with multiple first connecting surfaces, wherein two of the first connecting surfaces face away from each other in a first direction, wherein the other two first connecting surfaces face away from each other in a second direction, and the angle between the second direction and the first direction is α and satisfies: 60°≤α≤90°; the plow arm is constructed in multiple parts, and the second mating portion of each plow arm corresponds to and is detachably connected to one of the first connecting surfaces.

[0015] According to some embodiments of the present invention, a second connecting portion is further provided on the outer peripheral wall of the main shaft, and the second connecting portion is arranged on the side of the first connecting portion away from the scraper member, and the second connecting portion is formed with a plurality of second connecting surfaces, and the plurality of second connecting surfaces correspond one-to-one to the plurality of the plow arms, and the orientation of the second connecting surface is the same as the extension direction of the corresponding plow arm; a third matching portion is also provided on each of the plow arms; the plow device also includes: an inclined support member, and the inclined support member is constructed into a plurality corresponding to the number of the plow arms, and one end of each of the inclined support members is detachably connected to the second connecting surface and the other end is detachably connected to the third matching portion of the corresponding plow arm.

[0016] According to some embodiments of the present invention, both ends of each of the third matching parts extend outward radially from the plow arm; the plow device also includes: a horizontal support member, which is constructed in a plurality corresponding to the number of the plow arms, and the horizontal support member is arranged between two adjacent plow arms, one end of the horizontal support member is connected to one end of the third matching part of one of the plow arms, and the other end of the horizontal support member is connected to the other end of the third matching part of the other adjacent plow arm.

[0017] According to some embodiments of the present invention, the coupling flange, the first connecting portion, the second connecting portion, the first matching portion, the second matching portion and the third matching portion are all constructed as corrosion-resistant parts made of metal.

[0018] According to some embodiments of the present invention, the lengths of any two adjacent rake arms are not equal, and the lengths of the two rake arms located on opposite sides of the main shaft are equal.

[0019] According to some embodiments of the present invention, the first connecting portion is formed with a first mounting hole, the first mounting hole is configured as a blind hole, the second mating portion is formed with a second mounting hole, the second mounting hole is configured as a through hole; the plow device also includes: a fastener, the fastener passes through the second mounting hole and is threadedly mated with the first mounting hole.

[0020] According to some embodiments of the present invention, the fastener includes: a rod portion, a thread is formed on the outer peripheral wall of the rod portion, so as to be suitable for passing through the second mounting hole and threadedly mating with the first mounting hole; and a head, the head is located at one end of the rod portion and is suitable for blocking the second mounting hole.

[0021] The thickener according to the present utility model is briefly described below.

[0022] The thickener according to the present invention includes the plowshare device described in any one of the above embodiments. Because the thickener according to the present invention includes the plowshare device described in any one of the above embodiments, the thickener according to the present invention significantly improves material processing efficiency, reduces maintenance costs, enhances production safety, and reduces downtime.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic structural diagram of a plowshare device according to some embodiments of the present utility model;

[0026] Figure 2 is a schematic structural diagram of the main shaft of a plowshare device according to some embodiments of the present utility model;

[0027] Figure 3 2 is a schematic structural diagram of a first connecting portion and a second connecting portion on a main shaft of a plowshare device according to some embodiments of the present invention;

[0028] Figure 4 is a schematic structural diagram of a scraper member of a plowshare device according to some embodiments of the present utility model;

[0029] Figure 5 is a schematic structural diagram of a rake arm of a rake device according to some embodiments of the present utility model;

[0030] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point A in the middle;

[0031] Figure 7 is a schematic cross-sectional view of a third mating portion on a rake arm of a rake device according to some embodiments of the present invention;

[0032] Figure 8Schematic diagram of the structure of the rake arm of the rake device according to other embodiments of the present invention;

[0033] Figure 9 is a schematic structural diagram of an oblique support member of a plowshare device according to some embodiments of the present invention;

[0034] Figure 10 yes Figure 9 A partial enlarged schematic diagram of one end of the inclined support member at B in the middle;

[0035] Figure 11 yes Figure 9 A partial enlarged schematic diagram of the other end of the inclined support member at position C in the middle;

[0036] Figure 12 is a schematic structural diagram of a horizontal support member of a plowshare device according to some embodiments of the present invention;

[0037] Figure 13 yes Figure 2 A partial enlarged schematic diagram of the end of the horizontal support member at position D in the middle;

[0038] Figure 14 2. It is a schematic structural diagram of the cooperation between the rake arm and the horizontal support member of the rake device according to some embodiments of the present utility model;

[0039] Figure 15 is a schematic cross-sectional view of a rake arm of a rake device at a third mating portion according to some embodiments of the present invention;

[0040] Figure 16 yes Figure 15 A partial enlarged schematic diagram of point E in the middle.

[0041] Reference numerals:

[0042] 1. Plowing and harrowing device;

[0043] 11. Main shaft, 111. Coupling flange, 112. First connecting portion, 1121. First connecting surface, 1122. First mounting hole, 113. Second connecting portion, 1131. Second connecting surface;

[0044] 12. scraper member, 121. first mating portion;

[0045] 13. Rake arm, 131. Second mating portion, 1311. Second mounting hole, 132. Rake teeth, 133. Third mating portion;

[0046] 14. Diagonal support members, 15. Horizontal support members. DETAILED DESCRIPTION

[0047] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0049] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0050] In the related technology, during routine maintenance and overhaul, the rubber lining of the thickener plow rake often faces problems such as wear, aging and cracking, which will cause the carbon steel skeleton to directly contact the acid, thereby causing corrosion, accelerating the wear of the skeleton, and eventually causing the skeleton to deform or even break, seriously affecting the normal operation of the thickener. At present, the repair of the plow rake rubber lining mainly relies on local cold glue repair technology, but its service life is much lower than that of hot vulcanized rubber lining, and is affected by many factors. After the repair, it is necessary to wait for 24 hours to cure. If the corrosion is serious, it needs to be replaced, including a series of complex operations such as stripping, grinding, welding, relining, curing, etc. The maintenance time is long, and hot work is carried out in the sulfuric acid hazardous area, which poses a major safety hazard.

[0051] Reference below Figures 1-16 A plowing device 1 according to an embodiment of the present invention is described.

[0052] The plowshare device 1 according to the present invention is used for a thickener, such as Figure 1-Figure 5 、 Figure 8 As shown, the plowing device 1 includes a main shaft 11, a scraper member 12 and a plowing arm 13. A coupling flange 111 is provided at one end of the main shaft 11. The coupling flange 111 is used to connect the main shaft 11 with a driving device so as to transmit power to the main shaft 11, drive the main shaft 11 to rotate, and drive the scraper member 12 and the plowing arm 13 to complete the predetermined material processing task.

[0053] The scraper 12 is equipped with a first mating portion 121, which is removably connected to the other end of the main shaft 11, facilitating replacement and maintenance of the scraper 12. The scraper 12 has a scraping surface suitable for scraping material. At the discharge port located in the center of the thickener (i.e., directly below the main shaft 11), the scraper rotates with the main shaft 11 to scrape accumulated material, effectively preventing accumulation and blockage at the discharge port and ensuring smooth material discharge.

[0054] A first connecting portion 112 is provided on the outer peripheral wall of the main shaft 11, and a second matching portion 131 is provided at the end of the plow wall. The second matching portion 131 is detachably connected to the first connecting portion 112, so that the plow arm 13 can be flexibly installed and disassembled on the main shaft 11, making it convenient to replace and repair the plow arm 13 according to actual needs.

[0055] The rake arm 13 extends in the radial direction of the main shaft 11. The rake arm 13 is provided with a plurality of rake teeth 132 arranged at intervals in the extension direction. The rake teeth 132 rotate as the main shaft 11 rotates, so that the plurality of rake teeth 132 stir the material and guide the material to gather in the direction of the main shaft 11 through their specific arrangement and angle design.

[0056] The main shaft 11, scraper 12, and rake arm 13 are all constructed to be corrosion-resistant, eliminating the problems associated with wear, aging, and cracking of the rubber lining in related technologies. These components are directly exposed to the acid solution, eliminating the need for the rubber lining required in related technologies. This not only simplifies the equipment manufacturing process and reduces production costs, but also eliminates the complex rubber lining replacement procedures and the long curing time required. This significantly reduces equipment maintenance and downtime, improving production efficiency. Furthermore, hot work in sulfuric acid-hazardous areas is avoided, significantly reducing safety hazards and ensuring production safety.

[0057] The scraper member 12 and the plow arm 13 are both detachably connected to the main shaft 11. When a component of the plow device 1 is damaged, it can be easily replaced or repaired. The modular design greatly improves the maintainability and flexibility of the equipment.

[0058] Therefore, according to the plowing device 1 of the present invention, the maintainability and production safety of the thickener are significantly improved, and the maintenance cost and downtime are reduced.

[0059] According to some embodiments of the present invention, the main shaft 11, scraper 12, and rake arm 13 are all constructed of corrosion-resistant metal. Metal materials are resistant to corrosion by corrosive media such as acid, ensuring that the main shaft 11, scraper 12, and rake arm 13 maintain their original structure and performance during extended thickener operation, without damage or failure due to corrosion.

[0060] Specifically, corrosion-resistant metal parts include stainless steel and alloy steel. Stainless steel, because it contains a certain amount of chromium, forms a dense oxide film on the metal surface, preventing further oxidation and achieving corrosion resistance. Alloy steel, on the other hand, is made by adding a certain amount of alloying elements, such as chromium, nickel, and molybdenum, to ordinary steel to enhance its corrosion resistance, strength, hardness, and other properties.

[0061] Choosing corrosion-resistant metal components for the main shaft 11, scraper 12, and rake arm 13 not only addresses the issues of rubber lining wear, aging, and cracking in related technologies, but also avoids the complex operation and long curing times required for rubber lining replacement, thereby improving equipment reliability and maintenance efficiency. Furthermore, corrosion-resistant metal components offer greater strength and hardness, better resisting mechanical wear and tear from material scraping, thereby extending the equipment's service life.

[0062] During the development of this new product, in-depth preliminary testing was conducted on its corrosion resistance under gypsum working conditions. Based on the principle of gradually increasing material costs while taking into account cost-effectiveness, a variety of common materials, including 45# steel, 304 stainless steel, 316L stainless steel, and 2205 duplex steel, were selected for systematic experimental tracking and analysis.

[0063] After rigorous experimental verification, the results show that 2205 duplex steel exhibits excellent corrosion resistance under reasonable structural design conditions and can fully meet the use requirements under gypsum working conditions.

[0064] It should be noted that although advanced materials such as super duplex stainless steel (such as 2507) and nickel-based alloys have superior corrosion resistance and can more effectively resist corrosion under working conditions, due to their high manufacturing costs and relatively low cost-effectiveness, they are not widely feasible and economical in practical applications.

[0065] According to some embodiments of the present invention, Figure 2 and Figure 3As shown, the first connecting portion 112 is formed with multiple first connecting surfaces 1121, which are configured to mate with the second mating portions 131 on the plow arm 13 to achieve a detachable connection. The plow arm 13 is configured in multiple pieces, with the second mating portion 131 of each plow arm 13 corresponding to and detachably connected to a first connecting surface 1121. This allows the plow arms 13 to be flexibly mounted on the spindle 11 at different angles and positions, improving the efficiency and uniformity of material handling.

[0066] Two of the first connecting surfaces 1121 face away from each other in a first direction, and the other two first connecting surfaces 1121 face away from each other in a second direction. The angle between the second direction and the first direction is α. The angle α determines the relative position between the connecting surfaces in two different directions, thereby affecting the installation angle and coverage range of the plow arm 13.

[0067] Angle α satisfies the following conditions: 60° ≤ α ≤ 90°. When angle α is smaller (closer to 60°), the plowshare arms 13 in different directions can be more closely arranged around the main shaft 11, facilitating more efficient material handling. Conversely, when angle α is larger (closer to 90°), the space between the plowshare arms 13 is relatively larger, which can reduce the number of plowshare arms 13 and lower costs.

[0068] According to some embodiments of the present invention, Figure 1 、 Figure 5-Figure 11 As shown, a second connecting portion 113 is further provided on the outer peripheral wall of the main shaft 11. The second connecting portion 113 is arranged on the side of the first connecting portion 112 away from the scraper member 12, that is, the second connecting portion 113 and the first connecting portion 112 are relatively distributed in the axial direction of the main shaft 11 to fully utilize the space and optimize the structural layout.

[0069] The second connection portion 113 is formed with a plurality of second connection surfaces 1131 , the number and positions of the second connection surfaces 1131 corresponding to the number and positions of the plow arms 13 , ensuring that each plow arm 13 can obtain additional support through the second connection portion 113 .

[0070] The orientation of the second connecting surface 1131 is the same as the extension direction of the corresponding plow arm 13, so that when the inclined support member 14 connects the second connecting surface 1131 and the plow arm 13, it can apply a supporting force along the natural extension direction of the plow arm 13, thereby enhancing the stability and durability of the entire plow device 1.

[0071] Each rake arm 13 is further provided with a third matching portion 133 , which can establish a connection between the rake arm 13 and the oblique support member 14 , so that the oblique support member 14 can be firmly connected to the rake arm 13 .

[0072] The plowing device 1 also includes an inclined support member 14. The inclined support member 14 is constructed in a number corresponding to the number of the plowing arms 13. The inclined support member 14 further connects the plowing arms 13 to the main shaft 11, thereby enhancing the connection strength between the plowing arms 13 and the main shaft 11. The inclined support member 14 can withstand various forces and moments during operation, making the entire plowing device 1 more stable during operation. By providing the inclined support member 14, the plowing device 1 is significantly strengthened in structure. The inclined support member 14 not only provides additional support for the plowing arms 13, but also optimizes the force transmission path, thereby improving the overall rigidity and deformation resistance of the plowing device 1.

[0073] One end of each inclined support member 14 is detachably connected to the second connecting surface 1131 and the other end is detachably connected to the third matching portion 133 of the corresponding rake arm 13, making the assembly, disassembly and maintenance of the rake device 1 more convenient and efficient.

[0074] According to some embodiments of the present invention, Figure 5 、 Figure 6 、 Figure 8 、 Figure 12-16 As shown, both ends of each third mating portion 133 extend radially outward from the plow arm 13, so that the third mating portion 133 not only occupies a certain position on the plow arm 13, but also its both ends exceed the width range of the plow arm 13 itself, providing space for connection with other components.

[0075] The plow device 1 also includes a horizontal support member 15, which is constructed as a plurality of horizontal support members 15 corresponding to the number of plow arms 13, and the horizontal support member 15 is arranged between two adjacent plow arms 13 to strengthen the connection between adjacent plow arms 13, thereby improving the structural strength and stability of the entire plow device 1.

[0076] Specifically, one end of the horizontal support member 15 is connected to one end of the third matching portion 133 of a plow arm 13, and the other end of the horizontal support member 15 is connected to the other end of the third matching portion 133 of another adjacent plow arm 13, forming a transverse support structure, thereby achieving a tight connection and stable support between adjacent plow arms 13, and extending the service life of the plow device 1.

[0077] According to some embodiments of the present invention, the coupling flange 111, the first connecting portion 112, the second connecting portion 113, the first mating portion 121, the second mating portion 131, and the third mating portion 133 are all constructed of corrosion-resistant metal. Metal materials are resistant to corrosion by corrosive media such as acid, ensuring that the main shaft 11, scraper member 12, and rake arm 13 maintain their original structure and performance during extended thickener operation, without damage or failure due to corrosion.

[0078] Specifically, corrosion-resistant metal parts include stainless steel and alloy steel. Stainless steel, because it contains a certain amount of chromium, forms a dense oxide film on the metal surface, preventing further oxidation and achieving corrosion resistance. Alloy steel, on the other hand, is made by adding a certain amount of alloying elements, such as chromium, nickel, and molybdenum, to ordinary steel to enhance its corrosion resistance, strength, hardness, and other properties.

[0079] In a specific embodiment of the present invention, the coupling flange 111, the first connecting portion 112, the second connecting portion 113, the first mating portion 121, the second mating portion 131 and the third mating portion 133 are all made of 2507 duplex steel. Compared with 2205 duplex steel, 2507 duplex steel has a significant advantage in corrosion resistance, which effectively ensures the long-term stable operation of the components under complex working conditions, thereby ensuring the stability and reliability of the entire coupling connection.

[0080] According to some embodiments of the present invention, Figure 1 As shown, any two adjacent plowshare arms 13 are of unequal length. These different lengths produce varying stirring effects, helping to create a more complex flow pattern within the thickener, thereby promoting solid-liquid separation. The two plowshare arms 13 on opposite sides of the main shaft 11 are of equal length, helping to maintain the balance of the plowshare device 1 and thereby improving its operational stability. Furthermore, the equal length of the opposing plowshare arms 13 ensures uniform stirring and mixing of the material within the thickener.

[0081] According to some embodiments of the present invention, Figure 1 、 Figure 2 and Figure 5 As shown, the first connection portion 112 is formed with a first mounting hole 1122, which is configured as a blind hole. Therefore, the first mounting hole 1122 does not completely penetrate the material of the first connection portion 112, but ends inside the material. The blind hole is used to receive a thread for mating with a fastener thread.

[0082] The second fitting portion 131 is formed with a second mounting hole 1311 , which is configured as a through hole. Thus, the second mounting hole 1311 completely penetrates the material of the second fitting portion 131 , allowing a fastener to pass through from one side and out from the other side.

[0083] The plowing device 1 further includes a fastener that passes through the second mounting hole 1311 and is threadedly engaged with the first mounting hole 1122. When the fastener is tightened, the fastener enters the first mounting hole 1122 through the second mounting hole 1311 and tightly engages with the threads therein, thereby firmly connecting the first connecting portion 112 and the second engaging portion 131 together.

[0084] By constructing the first mounting hole 1122 as a blind hole, acid can be effectively prevented from entering the first mounting hole 1122 and corroding the threads, thereby extending the service life and reliability of the connecting component and ensuring the connection reliability between the first connecting part 112 and the second matching part 131.

[0085] According to some embodiments of the present invention, the fastener includes a stem and a head. The stem is configured to pass through the second mounting hole 1311 to connect the first connecting portion 112 and the second mating portion 131. Threads are formed on the outer peripheral wall of the stem, and the threads on the stem mate with the threads in the first mounting hole 1122. When the fastener is rotated and tightened, the threads on the stem and the threads in the first mounting hole 1122 tightly engage with each other, firmly connecting the first connecting portion 112 and the second mating portion 131.

[0086] The sealing head is located at one end of the rod and is suitable for sealing the second mounting hole 1311. When the fastener is fully tightened and passes through the second mounting hole 1311, the sealing head will be tightly attached to the outside of the second mating portion 131, preventing acid from entering the first mounting hole 1122 through the second mounting hole 1311, further preventing corrosion of the threads, and improving the overall durability and reliability of the plowing and rake device 1.

[0087] According to some embodiments of the present invention, the plow device 1 also includes a sealing ring, which surrounds the outer periphery of the second mounting hole 1311. It can not only effectively prevent the acid from penetrating into the first mounting hole 1122 and the second mounting hole 1311 and causing damage to the thread, but also provide a buffering effect when the fastener is tightened, reduce the stress concentration caused by over-tightening, and protect the connecting parts from damage.

[0088] According to some embodiments of the present invention, the third connection portion is connected to the oblique support member 14 and the horizontal support member 15 respectively by means of a fastener and a blind hole. Specifically, the third connection portion is also provided with corresponding mounting holes, which are also designed as blind hole structures to accommodate threads and achieve threaded cooperation with the fasteners. The fasteners pass through the corresponding through holes on the horizontal support member 15 or the oblique support member 14, and then are threadedly connected to the blind holes on the third connection portion, thereby firmly fixing the third connection portion to the horizontal support member 15 or the oblique support member 14. This not only ensures the firmness of the connection, but also effectively isolates corrosive substances through the blind hole structure, prevents corrosion of the threads, and extends the service life of the connection components.

[0089] Some embodiments of the present invention utilize externally welded steel plates on components as the base structure for connection. Subsequently, the steel plates are used as connectors between various components (e.g., the first connecting portion 112, the second connecting portion 113, and the third mating portion 133). This not only enhances the strength and stability of the connections, but also avoids the potential degradation of material properties and stress concentration associated with directly drilling holes in the main material. Furthermore, the overall structural flexibility is enhanced, facilitating component replacement and repair, thereby improving the maintainability and service life of the device.

[0090] In a further embodiment, 2205 welding rods were selected for welding. 2205 welding rods, also known as duplex stainless steel, offer excellent corrosion resistance, high strength, and good weldability. During welding, 2205 welding rods form dense and uniform welds, effectively resisting corrosion from corrosive media such as acid, ensuring weld stability.

[0091] The thickener according to the present utility model is briefly described below.

[0092] The thickener according to the present invention includes the plowshare device 1 of any one of the above-mentioned embodiments. Since the thickener according to the present invention includes the plowshare device 1 of any one of the above-mentioned embodiments, the thickener according to the present invention significantly improves material processing efficiency, reduces maintenance costs, enhances production safety, and reduces downtime.

[0093] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0094] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A plowing device for a thickener, characterized in that: include: A main shaft (11), wherein a coupling flange (111) is provided at one end of the main shaft (11), and a first connecting portion (112) is provided on an outer peripheral wall of the main shaft (11); A scraper member (12), wherein the scraper member (12) is provided with a first matching portion (121), and the first matching portion (121) is detachably connected to the other end surface of the main shaft (11); A rake arm (13), wherein the end of the rake wall is provided with a second matching portion (131), the second matching portion (131) is detachably connected to the first connecting portion (112), the rake arm (13) extends in the radial direction of the main shaft (11), and the rake arm (13) is provided with a plurality of rake teeth (132) spaced apart in the extending direction; The main shaft (11), the scraper element (12) and the rake arm (13) are all constructed as corrosion-resistant parts.

2. The plowing device according to claim 1, characterized in that The main shaft (11), the scraper element (12) and the rake arm (13) are all constructed as corrosion-resistant parts made of metal.

3. The plowing device according to claim 1, characterized in that The first connecting portion (112) is formed with a plurality of first connecting surfaces (1121), wherein two of the first connecting surfaces (1121) are separated from each other in a first direction, and wherein the other two of the first connecting surfaces (1121) are separated from each other in a second direction, and an angle α between the second direction and the first direction satisfies: 60°≤α≤90°; The rake arm (13) is constructed in plurality, and the second matching portion (131) of each rake arm (13) is correspondingly and detachably connected to one of the first connecting surfaces (1121).

4. The plowing device according to claim 3, characterized in that A second connecting portion (113) is further provided on the outer peripheral wall of the main shaft (11), and the second connecting portion (113) is provided on a side of the first connecting portion (112) away from the scraper member (12). The second connecting portion (113) is formed with a plurality of second connecting surfaces (1131), and the plurality of second connecting surfaces (1131) correspond one-to-one to the plurality of plow arms (13). The orientation of the second connecting surface (1131) is the same as the extension direction of the corresponding plow arm (13); Each of the rake arms (13) is further provided with a third matching portion (133); The plowing device further includes: an inclined support member (14), wherein the inclined support member (14) is constructed in a plurality corresponding to the number of the plowing arms (13), and one end of each of the inclined support members (14) is detachably connected to the second connecting surface (1131) and the other end is detachably connected to the third matching portion (133) of the corresponding plowing arm (13).

5. The plowing device according to claim 4, characterized in that Both ends of each third matching portion (133) extend radially outward from the rake arm (13); The plowing device further includes: a horizontal support member (15), wherein the horizontal support member (15) is constructed in a plurality corresponding to the number of the plowing arms (13), and the horizontal support member (15) is arranged between two adjacent plowing arms (13), one end of the horizontal support member (15) is connected to one end of the third matching portion (133) of one plowing arm (13), and the other end of the horizontal support member (15) is connected to the other end of the third matching portion (133) of another adjacent plowing arm (13).

6. The plowing device according to claim 5, characterized in that The coupling flange (111), the first connecting portion (112), the second connecting portion (113), the first matching portion (121), the second matching portion (131) and the third matching portion (133) are all constructed as corrosion-resistant parts made of metal.

7. The plowing device according to claim 3, characterized in that: The lengths of any two adjacent rake arms (13) are not equal, and the lengths of the two rake arms (13) located on opposite sides of the main shaft (11) are equal.

8. The plowing device according to claim 1, characterized in that The first connecting portion (112) is formed with a first mounting hole (1122), the first mounting hole (1122) being configured as a blind hole, and the second matching portion (131) is formed with a second mounting hole (1311), the second mounting hole (1311) being configured as a through hole; The plowshare device further comprises a fastener, which passes through the second mounting hole (1311) and is threadably engaged with the first mounting hole (1122).

9. The plowing device according to claim 8, characterized in that The fastener comprises: a rod portion, wherein a thread is formed on an outer peripheral wall of the rod portion so as to be suitable for passing through the second mounting hole (1311) and being threadably engaged with the first mounting hole (1122); A sealing head is located at one end of the rod portion and is suitable for sealing the second mounting hole (1311).

10. A thickener, characterized in that: A plowshare device comprising the plowshare device according to any one of claims 1 to 9.

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