Knocking rod, air hammer rapping device, air hammer rapping system and rotary furnace system

Abstract

The invention provides a knocking rod, an air hammer rapping device, an air hammer rapping system and a rotary furnace system.The knocking rod comprises a knocking rod body, one end of the knocking rod body is used for being in transmission fit with an external drive, and the other end of the knocking rod body is used for stretching into a furnace shell of a rotary furnace and forming a knocking end; the knocking rod body is used for conducting reciprocating motion in the axial direction of the knocking rod body under external driving so as to drive the knocking end to knock a furnace body in the furnace shell. In the direction from one end of the knocking rod body to the other end of the knocking rod body, the outer diameter of at least part of the knocking rod body including the knocking end is gradually reduced, that is, the knocking end is sharpened, so that the knocking area can be reduced, higher knocking pressure can be provided, and then the cleaning effect of knocking and vibrating off materials adhered to the inner wall of the furnace body can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of rotary kiln technology, and in particular to a striking rod, a pneumatic hammer rapping device, a pneumatic hammer rapping system, and a rotary kiln system. Background Technology

[0002] A rotary kiln is a high-temperature heat treatment equipment used in industry. Its core feature is that the material is heated while rotating inside the kiln to achieve heat treatment.

[0003] However, materials tend to adhere to the inner wall of the furnace at high temperatures, forming scale. This reduces the furnace's heat transfer efficiency and affects the uniform heating of the materials. Therefore, a hammer is typically used to tap the outer wall of the furnace to dislodge the material and clean it.

[0004] However, current hammering components are not effective at cleaning, lack reliability, and are not adaptable. Summary of the Invention

[0005] The purpose of this application is to provide a hammering rod, a pneumatic hammer rapping device, a pneumatic hammer rapping system, and a rotary kiln system, aiming to solve the problem of how to achieve long-term, reliable, and adaptable hammering cleaning of materials adhering to the inner wall of the furnace.

[0006] In a first aspect, embodiments of this application provide a striking rod, including a striking rod body; one end of the striking rod body is used to cooperate with an external drive transmission, and the other end of the striking rod body is used to extend into the furnace shell of a rotary kiln and form a striking end; the striking rod body can reciprocate along the axial direction of the striking rod body under external drive, so as to drive the striking end to strike the furnace body inside the furnace shell. In the direction along the striking rod body from one end to the other, the outer diameter of at least a portion of the striking end of the striking rod body gradually decreases.

[0007] In some embodiments, the striking rod body includes a first rod segment and a second rod segment connected in sequence along a direction from one end to the other, wherein the end of the second rod segment away from the first rod segment forms the striking end; The outer diameter of the second rod segment gradually decreases in the direction from one end to the other along the body of the striking rod.

[0008] In some embodiments, the ratio of the axial length of the second rod segment to the axial length of the striking rod body ranges from one-fifth to one-quarter; And / or, the ratio of the outer diameter of the striking end to the outer diameter of the first rod segment is in the range of one-half to two-thirds; And / or, the outer diameter of the first segment remains unchanged, and the outer diameter of the first segment is equal to the outer diameter of the end of the second segment that connects to the first segment, and there is a smooth transition between the first segment and the second segment; And / or, the end face of the striking end away from the first rod segment forms an arc surface, the radius of which is smaller than the radius of the furnace body; And / or, the hardness of the striking rod body is less than the hardness of the furnace body, and the difference between the hardness of the furnace body and the hardness of the striking rod body is in the range of 20HB-30HB. And / or, the first segment and the second segment are integrally formed.

[0009] Secondly, this application provides a pneumatic hammer vibration device, including a pneumatic hammer, a pneumatic hammer mounting base, a reset component, and a striking rod; The air hammer mounting base is located on the outer wall of the furnace shell and has an inner cavity. The air hammer is located on one side of the air hammer mounting base and communicates with the inner cavity. The side of the air hammer mounting base away from the air hammer is provided with a through hole communicating with the inner cavity. The first rod segment passes through the through hole into the inner cavity, and the reset member is located in the inner cavity and sleeved on the first rod segment. The first rod segment can move under the action of the air hammer and can be reset under the action of the reset member.

[0010] In some embodiments, the air hammer mounting base includes a mounting sleeve having the inner cavity and first connecting flanges disposed at both ends of the mounting sleeve along the axial direction, the two first connecting flanges being respectively connected to the air hammer and the outer wall of the furnace shell; The outer wall of the mounting sleeve is provided with a reinforcing structure.

[0011] In some embodiments, the reinforcing structure includes at least two reinforcing plates spaced circumferentially along the mounting sleeve; The reinforcing plate is connected to the two first connecting flanges at both ends along the axial direction of the mounting sleeve. And / or, the mounting sleeve, the reinforcing plate, and the first connecting flange are integrally formed; And / or, the ratio of the elastic force of the reset member to the weight of the striking rod body is in the range of 1 to 2.

[0012] In some embodiments, a finite position structure is formed on the outer wall of the first rod segment.

[0013] In some embodiments, the limiting structure includes a limiting protrusion that protrudes in a direction away from the outer wall of the first rod segment; And / or, there are at least two limiting structures, and the at least two limiting structures are distributed sequentially along the axial direction of the first rod segment, and the outer diameter of the limiting structure closer to the striking end is smaller than the outer diameter of the limiting structure farther from the striking end.

[0014] In some embodiments, the outer wall of the mounting sleeve is provided with a discharge port communicating with the inner cavity, and the reinforcing plate or the mounting sleeve is provided with a collection container communicating with the discharge port.

[0015] In some embodiments, the collection container includes a bottom shell and a side shell, the bottom shell and the side shell enclosing a collection cavity with an opening facing the discharge port; The side shell is respectively disposed on the opposite side walls of the two adjacent reinforcing plates away from each other along the circumferential direction of the mounting sleeve. The side shell is inserted between the two adjacent reinforcing plates on the opposite side walls along the axial direction of the mounting sleeve. The side shell is provided with a clearance groove on the opposite side walls along the axial direction of the mounting sleeve to avoid the reinforcing plates. And / or, the collection container is provided with a first connection hole, the reinforcing plate or the mounting sleeve is provided with a second connection hole, and the collection container is connected to the reinforcing plate or the mounting sleeve through a fastener passing through the first connection hole and the second connection hole.

[0016] In some embodiments, a connecting sleeve is provided on the side of the air hammer mounting base away from the air hammer, the connecting sleeve is sleeved outside the first rod segment, and a lubricant is provided between the connecting sleeve and the first rod segment.

[0017] In some embodiments, the lubricant is a graphite bushing; And / or, a second connecting flange is provided at one end of the connecting sleeve near the air hammer mounting base, and the second connecting flange is connected to the first connecting flange; And / or, a heat insulation component is provided between the air hammer mounting base and the air hammer; And / or, the air hammer includes an air hammer housing and a hammer head disposed within the air hammer housing, the hammer head being sleeved and fitted with the striking rod so that when the air hammer is ventilated, the hammer head drives the striking rod to move; and one end of the hammer head near the striking rod is used to extend outside the air hammer housing when the air hammer is not ventilated. And / or, in the direction along the furnace body to the furnace shell, the air hammer mounting base is inclined toward the bottom of the furnace shell.

[0018] Thirdly, embodiments of this application provide a pneumatic hammer rapping system, including a controller, a gas storage structure, multiple switching valves, and multiple pneumatic hammer rapping devices; Multiple air hammer rapping devices are respectively located in the top area and two side areas of the furnace shell; the gas storage structure is connected to each air hammer, and each air hammer rapping device is provided with a switch valve at the air inlet of the air hammer; the controller is electrically connected to each switch valve and is used to independently control the start and stop status of each switch valve to switch the rapping mode of the air hammer rapping system. The vibration mode includes at least one of the following modes: The controller controls the simultaneous activation of the switching valves of at least one air hammer in the top region, at least one air hammer in one of the two side regions, and at least one air hammer in the other of the two side regions. The controller controls the simultaneous activation of the switching valves of all air hammers corresponding to at least any temperature zone pipe section of the furnace body, wherein the furnace body includes a first temperature zone pipe section, a second temperature zone pipe section and an nth temperature zone pipe section divided sequentially along the axial direction; The controller controls the simultaneous activation of the switching valves of all the pneumatic hammers; The controller activates the on / off valve of a specific air hammer at the debugging or maintenance location of the furnace body.

[0019] Fourthly, embodiments of this application provide a rotary kiln system, characterized in that it includes a rotary kiln and a pneumatic hammer rapping system.

[0020] The beneficial effects of this invention are: This application provides a striking rod, a pneumatic hammer rapping device, a pneumatic hammer rapping system, and a rotary kiln system. The striking rod includes a striking rod body, one end of which is used to engage with an external drive transmission, and the other end of which extends into the rotary kiln to form a striking end. The striking rod body is used to reciprocate along its axial direction under external drive to drive the striking end to strike the inner wall of the rotary kiln, thereby knocking off the material adhering to the inner wall of the rotary kiln. Simultaneously, in the direction from one end to the other, at least a portion of the outer diameter of the striking rod body, including the striking end, gradually decreases, effectively sharpening the striking end. This reduces the striking area of ​​the striking end on the inner wall of the rotary kiln, providing greater striking pressure and thus effectively improving the cleaning effect of knocking off the material adhering to the inner wall of the rotary kiln.

[0021] The striking rod has a hardness slightly lower than that of the furnace body. The striking rod wears out first and is easy to replace, which avoids damage to the key component of the furnace body and reduces maintenance costs.

[0022] The striking rod is divided into a first segment and a second segment, with a defined length-to-diameter ratio. Combined with the optimized ratio of the spring force of the reset component to the weight of the striking rod, the striking action is powerful, the reset is timely, and the movement is smooth and reliable.

[0023] The system includes an outlet with a collection container to collect wear debris, facilitating observation, feedback, and maintenance of the striking rod.

[0024] Among these features, the use of lubricating components such as graphite bushings reduces friction, protects the striking rod, further improves the system's durability and reliability, and reduces energy consumption.

[0025] The end of the hammer head near the striking rod is designed to extend outside the hammer housing when the hammer is not ventilated. This design prevents foreign objects from being brought into the hammer after long-term operation, which could cause the internal structure to jam and ultimately lead to the hammer's failure.

[0026] In particular, along the direction from the furnace body to the furnace shell, the air hammer mounting base is inclined towards the bottom of the furnace shell to prevent fatigue fracture of the reset component after long-term use, which would cause the hammer rod to fail to rebound and cause friction between it and the furnace shell of the rotary kiln, thus damaging the furnace shell.

[0027] The hammer rapping system, through the cooperation of the controller and multiple switching valves, can realize a variety of programmable rapping modes (such as zone rapping, segmented temperature zone rapping, full hammer rapping, and single-point debugging). It can flexibly select the best cleaning solution according to the material adhesion and temperature distribution, with a high degree of automation and strong adaptability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the striking rod shown in the embodiment of this application; Figure 2 This is a schematic diagram of the pneumatic hammer rapping device shown in the embodiments of this application. Figure 1 ; Figure 3 This is a schematic diagram of the pneumatic hammer rapping device shown in the embodiments of this application. Figure 2 ; Figure 4 This is a schematic diagram of the pneumatic hammer rapping device shown in the embodiments of this application. Figure 3 ; Figure 5 for Figure 4 A magnified view of a portion at point A; Figure 6 This is a schematic diagram of the pneumatic hammer rapping device shown in the embodiments of this application. Figure 4 ; Figure 7 for Figure 6Cross-sectional view along BB; Figure 8 This is a schematic diagram of the structure of the pneumatic hammer rapping device shown in the embodiment of this application, which removes the collection container and the fixing component. Figure 9 This is a schematic diagram of the structure of the collection container of the pneumatic hammer rapping device shown in the embodiments of this application; Figure 9-1 This is a schematic diagram of the structure of the air hammer in the air hammer rapping device shown in the embodiments of this application; Figure 10 This is a circuit diagram of the pneumatic hammer rapping system shown in the embodiments of this application; Figure 11 This is a partial cross-sectional view of the rotary kiln equipment shown in the embodiments of this application; Figure 12 This is a partial structural schematic diagram of the rotary kiln equipment shown in the embodiments of this application; Figure 13 This is a partial schematic diagram of the rotary kiln equipment shown in the embodiments of this application.

[0030] Figure label: 100. Striking rod body; 110. First rod segment; 120. Second rod segment; 121. Striking end; 140. Limiting structure; 141. Limiting protrusion; 200. Air hammer; 210. Third connecting flange; 220. Air hammer housing; 230. Hammer head; 300. Air hammer mounting base; 310. Inner cavity; 320. Perforation; 330. Mounting sleeve; 331. Discharge port; 340. First connecting flange; 341. First mounting hole; 350. Reinforcing structure; 351. Reinforcing plate; 352. Second connecting hole; 353. Fixing component 354. Operating component; 400. Reset component; 500. Collection container; 510. Bottom shell; 520. Side shell; 530. Clearance groove; 540. First connecting hole; 550. First side wall; 560. Second side wall; 600. Connecting sleeve; 610. Lubricating component; 620. Second connecting flange; 621. Second mounting hole; 700. Heat insulation component; 710. Clearance hole; 720. Vent hole; 800. Controller; 810. Switch valve; 900. Rotary furnace; 910. Furnace shell; 920. Furnace body; 930. Mounting base. Detailed Implementation

[0031] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0032] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0033] Reference Figure 1 , Figure 11 As shown in the figure, this application embodiment provides a striking rod, including a striking rod body 100.

[0034] One end of the striking rod body 100 is used to cooperate with an external drive transmission, and the other end of the striking rod body 100 is used to extend into the furnace shell 910 of the rotary kiln 900 and form a striking end 121. The striking rod body 100 is used to reciprocate along the axial direction of the striking rod body 100 under external drive, so as to drive the striking end 121 to strike the furnace body 920 inside the furnace shell 910.

[0035] In the direction along one end of the striking rod body 100 to the other, the outer diameter of at least a portion of the striking rod body 100, including the striking end 121, gradually decreases.

[0036] In specific implementation, the axial reference of the striking rod body 100 is... Figure 1 As shown in the x-direction, the striking rod body 100 is used to reciprocate along the x-direction under external drive, thereby driving the striking end 121 to repeatedly strike the outer wall of the furnace body 920, shaking off the material adhering to the inner wall of the furnace body 920. This effectively cleans the adhering material, ensuring the heat transfer efficiency within the furnace body 920, allowing the material within the furnace body 920 to be heated evenly, and preventing the adhering material from increasing the operating resistance of the rotary kiln 900, thus avoiding increased energy consumption. Simultaneously, it prevents the adhering material from solidifying under long-term high-temperature conditions, forming hard scale that is difficult to remove and affecting the service life and production efficiency of the rotary kiln 900.

[0037] In this embodiment, along Figure 1 In the x-direction shown, the outer diameter of at least part of the striking rod body 100, including the striking end 121, gradually decreases. This arrangement can reduce the outer diameter of the striking end 121, that is, achieve a sharpened design of the striking end 121, thereby reducing the striking area to provide greater striking pressure, which can effectively improve the cleaning effect of knocking off the material adhering to the inner wall of the furnace body 920.

[0038] It should be noted that the gradual decrease in the outer diameter of at least a portion of the striking rod body 100, including the striking end 121, means that the outer diameter of the entire striking rod body 100 can gradually decrease along the x-direction, or that the outer diameter of a portion of the striking rod body 100, including the striking end 121, can gradually decrease along the x-direction. See the specific reference below. Figure 1 As shown. Both of the above methods can achieve the sharpening setting of the striking end.

[0039] Reference Figure 1 As shown, in some embodiments, the striking rod body 100 includes a first rod segment 110 and a second rod segment 120 connected in sequence along the direction from one end to the other. The end of the second rod segment 120 away from the first rod segment 110 forms a striking end 121, and the outer diameter of the second rod segment 120 gradually decreases.

[0040] In specific implementation, refer to Figure 1 As shown, the striking rod body 100 includes a first rod segment 110 and a second rod segment 120 arranged and connected sequentially along the x-direction. The first rod segment 110 is used to reciprocate along the x-direction under the action of an external drive, thereby driving the second rod segment 120 to reciprocate. This causes the striking end 121 formed at the end of the second rod segment 120 away from the first rod segment 110 to repeatedly strike the furnace body 920, shaking off the material adhering to the inner wall of the furnace body 920. This effectively cleans the adhering material, ensuring the heat transfer efficiency within the furnace body 920, ensuring uniform heating of the material within the furnace body 920, and preventing the adhering material from increasing the operating resistance of the furnace body 920 and thus increasing the energy consumption of the rotary kiln 900. Simultaneously, it prevents the adhering material from solidifying under long-term high-temperature conditions, forming hard scale that is difficult to remove and affecting the service life and production efficiency of the rotary kiln 900.

[0041] In this embodiment, along Figure 1 In the x-direction shown, the outer diameter of the second rod segment 120 can be set to gradually decrease, or the outer diameter of the striking end 121 can be set to be smaller than the outer diameter of the end of the second rod segment 120 closest to the first rod segment 110. This setting can reduce the outer diameter of the striking end 121, that is, achieve the sharpening design of the striking end 121, thereby reducing the striking area to provide greater striking pressure, which can effectively improve the cleaning effect of knocking off the material adhering to the inner wall of the furnace body 920.

[0042] For example, refer to Figure 1 As shown, in this embodiment, the outer diameter of the second rod segment 120 can be set to gradually decrease. At this time, the outer diameter of the striking end 121 is the smallest, which makes the overall outer wall surface of the second rod segment 120 smooth and without sharp edges, and can effectively increase the striking pressure of the striking end 121 to improve the cleaning effect.

[0043] Furthermore, in this embodiment, by setting the outer diameter of the striking end 121 to be relatively small, the problem of the outer diameter of the striking end 121 expanding and increasing due to long-term striking can be prevented, thus avoiding the problem of it being unable to be removed from the opening provided on the furnace shell 910 for disassembly. Therefore, sharpening the striking end 121 also allows it to be easily removed from the opening on the furnace shell 910 after deformation and expansion due to long-term operation, so as to facilitate disassembly, replacement or maintenance.

[0044] For example, the striking bar body 100 itself can be made of a material with good hardness to ensure service life. For instance, the striking bar body 100 can be made of metal or alloy.

[0045] The striking rod in this embodiment includes a striking rod body 100. The striking rod body 100 includes a first rod segment 110 and a second rod segment 120 connected sequentially along the axial direction. The end of the second rod segment 120 away from the first rod segment 110 forms a striking end 121. The first rod segment 110 is used to reciprocate along the axial direction of the second rod segment 120 under external drive, so as to drive the striking end 121 to strike the outer wall of the furnace body 920, thereby achieving the purpose of vibrating and knocking off the material adhering to the inner wall of the furnace body 920.

[0046] Meanwhile, along the direction from the first rod segment 110 to the second rod segment 120, the outer diameter of the second rod segment 120 gradually decreases, or the outer diameter of the striking end 121 is smaller than the outer diameter of the end of the second rod segment 120 that connects to the first rod segment 110. That is, at least the striking end 121 of the second rod segment 120 is sharpened. This reduces the striking area of ​​the striking end 121 on the outer wall of the furnace body 920, thereby providing greater striking pressure and effectively improving the cleaning effect of knocking off the material adhering to the inner wall of the furnace body 920.

[0047] Reference Figure 1 As shown, in some embodiments, the ratio of the axial length of the second segment 120 to the axial length of the striking bar body 100 ranges from one-fifth to one-quarter.

[0048] In this embodiment, the outer diameter of the second rod segment 120 can be set to gradually decrease. To this end, by reasonably setting the ratio range of the axial length of the second rod segment 120 to the total axial length of the striking rod body, the first rod segment 110 has sufficient axial dimensions to ensure the overall structural strength and hardness of the entire striking rod body 100, and to ensure that it passes through the furnace shell smoothly and reliably, and also to ensure that the striking action of the second rod segment 120 is powerful.

[0049] For example, the ratio of the axial length of the second segment 120 to the axial length of the striking rod body 100 can be one-fifth (i.e., 0.2), or nine-fortieths (i.e., 0.225), or one-quarter (i.e., 0.25).

[0050] Reference Figure 1 As shown, in some embodiments, the ratio of the outer diameter of the striking end 121 to the outer diameter of the first rod segment 110 ranges from one-half to two-thirds.

[0051] In this embodiment, by setting the outer diameter of the second rod segment 120 to gradually decrease, the outer diameter of the striking end 121 is reduced to achieve the purpose of sharpening. By reasonably setting the ratio range between the outer diameter of the striking end 121 and the outer diameter of the first rod segment 110, it is ensured that the striking end 121 can provide greater striking pressure while the first rod segment 110 can have a sufficient outer diameter to ensure its structural strength and hardness.

[0052] For example, the ratio of the outer diameter of the striking end 121 to the outer diameter of the first rod segment 110 can be one-half (i.e., 0.5), seven-twelfths (i.e., 0.583), or two-thirds (i.e., 0.667).

[0053] Reference Figure 1 As shown, in some embodiments, the outer diameter of the first segment 110 remains unchanged, and the outer diameter of the first segment 110 is equal to the outer diameter of the end of the second segment 120 closest to the first segment 110, and there is a smooth transition between the first segment 110 and the second segment 120.

[0054] In other words, to avoid setting steps or other transition sections on the striking rod body 100, the outer diameter of the first rod segment 110 can be equal to the maximum value of the outer diameter of the second rod segment 120. In this case, a smooth transition is achieved between the first rod segment 110 and the second rod segment 120 to prevent stress concentration at transition sections such as steps on the striking rod body due to long-term striking, which could lead to breakage. In this embodiment, the first rod segment 110 provides sufficient structural strength and hardness, while facilitating the overall sharpening of the second rod segment 120 with its smaller outer diameter. This also minimizes the outer diameter at the striking end 121, providing greater striking pressure and preventing thermal deformation and expansion that could prevent the rod from being removed from the furnace shell 910.

[0055] Reference Figure 1 As shown, in some embodiments, the end face of the striking end 121 away from the first rod segment 110 forms an arc surface, the radius of which is smaller than the radius of the furnace body 920, in order to prevent the furnace body 920 from being penetrated under long-term striking when the outer surface of the striking end 121 forms a right angle or acute angle.

[0056] That is, the outer surface of the striking end 121 is set to be an arc surface, and the radius of the arc surface is smaller than the radius of the furnace body 920, so as to ensure that the outer surface of the striking end 121 in contact with the furnace body 920 is an arc surface, thereby reducing the risk of penetration when striking the furnace body 920, and thus improving the service life of the furnace body 920.

[0057] In this embodiment, the hardness of the striking rod body 100 is less than that of the furnace body 920. The difference between the hardness of the furnace body 920 and the hardness of the striking rod body 100 is between 20HB and 30HB, in order to prevent the furnace body 920 from deforming or being damaged by long-term striking. In addition, the striking rod is more wear-resistant and easier to replace than the furnace body, thus avoiding damage to the key component furnace body and reducing maintenance costs.

[0058] For example, the difference between the hardness of the furnace body 920 and the hardness of the striking rod body 100 can be 20HB, 25HB, or 30HB.

[0059] For example, both the furnace body 920 and the striking rod body 100 can be made of 310S stainless steel. The difference lies in that the furnace body 920 is manufactured using a cold working strengthening process (cold work hardening), while the striking rod body 100 is treated with a solution treatment process. This results in a relatively higher hardness for the furnace body 920 and a relatively lower hardness for the striking rod body 100. Specifically, the hardness range of the furnace body 920 after cold working strengthening is 210HB-240HB, and the hardness range of the striking rod body 100 after solution treatment is 190HB-200HB.

[0060] In practice, the first segment 110 and the second segment 120 are integrally formed, which can save manufacturing processes and improve the structural strength of the entire striking rod body 100 to ensure the service life of the striking rod body 100, and avoid the problem of weld cracking that can easily occur when the two are formed separately and then welded.

[0061] Reference Figures 1 to 9 As shown, this embodiment provides a pneumatic hammer rapping device, including a pneumatic hammer 200, a pneumatic hammer mounting base 300, a reset component 400, and a striking rod.

[0062] The specific structure and implementation principle of the striking rod in this embodiment are the same as those of the striking rod provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0063] Specifically, the air hammer mounting base 300 is located on the outer wall of the furnace shell 910 and has an inner cavity 310. The air hammer 200 is located on one side of the air hammer mounting base 300 and communicates with the inner cavity 310. A through hole 320 communicating with the inner cavity 310 is provided on the side of the air hammer mounting base 300 away from the air hammer 200. The first rod segment 110 passes through the through hole 320 and is inserted into the inner cavity 310. The reset member 400 is located in the inner cavity 310 and is sleeved on the first rod segment 110. The first rod segment 110 can move under the action of the air hammer 200 and can be reset under the action of the reset member 400.

[0064] In specific implementation, the air hammer mounting base 300 is arranged along the axial direction of the first rod segment 110. The air hammer 200 is located on one side of the air hammer mounting base 300 along the axial direction of the first rod segment 110 and communicates with the inner cavity 310. A through hole 320 is provided on the other side of the air hammer mounting base 300. A portion of the first rod segment 110 passes through the through hole 320 into the inner cavity 310. When the air hammer 200 is vented into the inner cavity 310, the first rod segment 110 moves away from the air hammer 200 under the action of the gas and compresses the reset member 400, that is, along the... Figure 1 The hammer moves in the x-direction as shown to strike the furnace body 920. When the air hammer 200 is not ventilated, the first rod segment 110 is reset in the opposite direction to the x-direction under the elastic action of the reset member 400. By repeating the above process, the furnace body 920 can be repeatedly struck to thoroughly clean the material adhering to the inner wall of the furnace body 920.

[0065] Furthermore, the rotary kiln 900 can include a furnace head and a furnace tail at both ends, as well as a heating tube section connecting the furnace head and the furnace tail. Compared to the existing mechanical rapping structure, which can only be set on the outer wall of the furnace head or the outer wall of the furnace tail due to size issues, resulting in limited knocking and cleaning effects, in this embodiment, the air hammer mounting base 300 and the air hammer 200 of the air hammer rapping device are located on the outside of the heating tube section. The air hammer mounting base 300 is connected to the outer wall of the heating tube section, and at least a portion of the striking rod body 100 extends through the opening of the heating tube section into the interior of the high-temperature tube, so that the striking end 121 can repeatedly strike the inner wall of the heating tube section under the action of the air hammer 200 to completely knock off the material adhering to the inner wall of the furnace body 920.

[0066] For example, the reset element 400 may specifically be a spring or other component with elastic restoring properties.

[0067] In addition, the pneumatic hammer type rapping device has strong rapping force and high striking frequency, which can effectively remove the adhering material on the inner wall of the furnace body 920 and improve the cleaning effect. Compared with the existing mechanical rapping device and airflow purging device, the pneumatic hammer type rapping device has a better cleaning effect, can thoroughly remove the adhering material, improve the heat transfer efficiency of the furnace body 920, reduce the operating resistance of the furnace body 920, and reduce equipment energy consumption.

[0068] Reference Figures 2 to 8 As shown, in some embodiments, the air hammer mounting base 300 includes a mounting sleeve 330 with an inner cavity 310 and first connecting flanges 340 disposed at both ends of the mounting sleeve 330 along the axial direction. The two first connecting flanges 340 are respectively connected to the air hammer 200 and the outer wall of the furnace shell 910; a reinforcing structure 350 is provided on the outer wall of the mounting sleeve 330.

[0069] In practice, the air hammer mounting base 300 consists of a mounting sleeve 330 and a reinforcing structure 350 provided on the outer wall of the mounting sleeve 330. This gives the air hammer mounting base 300 itself high structural strength, which in turn can effectively improve the installation strength and stability of the air hammer 200 connected to or installed on the air hammer mounting base 300. This ensures that the air hammer 200 will not crack even if it works under high temperature for a long time, thus ensuring the service life of the air hammer 200.

[0070] Reference Figure 2 , Figure 3 , Figure 8 As shown, in some embodiments, the reinforcing structure 350 includes at least two reinforcing plates 351 spaced circumferentially along the mounting sleeve 330, so as to effectively improve the structural strength of the air hammer mounting base 300 through the at least two reinforcing plates 351, thereby improving the installation strength and stability of the air hammer 200.

[0071] For example, two reinforcing plates 351 can be provided, in which case the two reinforcing plates 351 are positioned at 180° apart. Alternatively, refer to... Figure 2 , Figure 3 and Figure 8 As shown, the reinforcing plates 351 can be set as three evenly spaced plates, with adjacent reinforcing plates 351 set at 120°.

[0072] Furthermore, in this embodiment, the reinforcing plate 351 can be connected to the two first connecting flanges 340 at both ends along the axial direction of the mounting sleeve 330, which can further and effectively improve the structural stability and strength of the entire air hammer mounting base 300.

[0073] For example, the mounting sleeve 330, reinforcing plate 351 and first connecting flange 340 are integrally formed to save manufacturing steps while improving the structural strength of the entire air hammer mounting base 300, thereby improving the installation strength and stability of the air hammer 200.

[0074] Reference Figure 1 and Figure 7 As shown, in some embodiments, a limiting structure 140 is formed on the outer wall of the first rod segment 110. The limiting structure 140 is disposed in the inner cavity 310 to restrict the first rod segment 110 from detaching from the inner cavity 310.

[0075] In specific implementation, at least a portion of the first rod segment 110 is located within the inner cavity 310, allowing the first rod segment 110 to move axially under the action of gas when the air hammer 200 supplies gas into the inner cavity 310, thereby driving the striking end 121 to move and achieve the striking action. To prevent the first rod segment 110 from detaching from the inner cavity 310 during axial movement and affecting the next striking action, a limiting structure 140 can be provided on the outer wall of the first rod segment 110. The limiting structure 140 can prevent the first rod segment 110 from detaching from the inner cavity 310, and at the same time prevent the striking rod body 100 from falling into the furnace shell 910 when the reset member 400 fails.

[0076] Reference Figure 1 and Figure 7 As shown, in some embodiments, the limiting structure 140 includes a limiting protrusion 141 protruding in a direction away from the outer wall of the first rod segment 110, such that after the first rod segment 110 moves to its maximum travel, it abuts against the inner wall of the inner cavity 310 on the side away from the air hammer 200 through the limiting protrusion 141, thereby limiting the first rod segment 110 from moving out of the inner cavity 310.

[0077] For example, the outer contour dimension of the limiting protrusion 141 can be set to be larger than the diameter of the through hole 320, thus preventing the first rod segment 110 from detaching from the inner cavity 310. Alternatively, the limiting structure 140 may include a first magnetic attractor disposed on the outer wall of the first rod segment 110, and a second magnetic attractor disposed on the inner wall of the inner cavity 310 on the side away from the air hammer 200. When the first rod segment 110 moves to its limit position, the first and second magnetic attractors magnetically engage to prevent the first rod segment 110 from continuing to move and detaching from the inner cavity 310.

[0078] In specific implementation, such as Figure 7As shown, there are at least two limiting structures 140, which are distributed sequentially along the axial direction of the first rod segment 110. The outer diameter of the limiting structure 140 near the striking end 121 is smaller than the outer diameter of the limiting structure 140 away from the striking end 121. The reset member 400 is sleeved on the limiting structure 140 near the striking end 121, which restricts the first rod segment 110 from disengaging from the inner cavity 310. The limiting structure 140 near the striking end 121 can limit and guide the reset member 400.

[0079] For example, the limiting structure 140 can be as follows: Figure 1 The two shown can also be three, etc.

[0080] Reference Figure 7 and Figure 9 As shown, in some embodiments, the outer wall of the mounting sleeve 330 is provided with a discharge port 331 communicating with the inner cavity 310, and the reinforcing plate 351 or the mounting sleeve 330 is provided with a collection container 500 communicating with the discharge port 331, so as to discharge and collect the material or other foreign objects brought into the inner cavity 310 by the striking rod body 100 through the discharge port 331 and the collection container 500, so as to avoid the accumulation of material or foreign objects in the inner cavity 310 and affect the striking operation of the striking rod body 100.

[0081] Reference Figure 9 As shown, in some embodiments, the collection container 500 includes a bottom shell 510 and a side shell 520, which together form a collection cavity with an opening facing the discharge port 331.

[0082] The side shell 520 is respectively disposed on the opposite side walls of the two adjacent reinforcing plates 351 away from each other along the circumferential direction of the mounting sleeve 330. The side shell 520 is inserted between the two adjacent reinforcing plates 351 on the opposite side walls along the axial direction of the mounting sleeve 330, and the side shell 520 is provided with a clearance groove 530 for avoiding the reinforcing plates 351 on the opposite side walls along the axial direction of the mounting sleeve 330.

[0083] In other words, the two circumferential sidewalls of the collection container 500 can be located on the outer surfaces of two adjacent reinforcing plates 351, while the two axial sidewalls are just fitted into the space between two adjacent reinforcing plates 351. This makes reasonable use of the space between two adjacent reinforcing plates 351 to accommodate the collection container 500, thereby improving space utilization, achieving a compact design of the overall structure, and facilitating the assembly of the collection container 500.

[0084] Specifically, refer to Figure 9As shown, the two side walls of the collection container 500 along the circumferential direction can be set as first side walls 550, and the two side walls along the axial direction can be set as second side walls 560. The two first side walls 550 are respectively set on the side of the two adjacent reinforcing plates 351 away from each other, and the second side walls 560 are just fitted in the space between the two adjacent reinforcing plates 351, and the second side walls 560 are provided with clearance grooves 530 to avoid the reinforcing plates 351.

[0085] In a specific implementation, the collection container 500 is provided with a first connection hole 540, and the reinforcing plate 351 or the mounting sleeve 330 is provided with a second connection hole 352. The collection container 500 is connected to the reinforcing plate 351 or the mounting sleeve 330 through a fastener 353 passing through the first connection hole 540 and the second connection hole 352, so as to achieve a reliable connection between the two.

[0086] For example, both the first connecting hole 540 and the second connecting hole 352 can be open holes, and the fastener 353 can be as follows: Figure 5 The fastening pin or pin shaft shown has an operating element 354 sleeved on its outer wall to facilitate insertion and removal of the fastening pin or pin shaft. Alternatively, one of the first connecting hole 540 and the second connecting hole 352 is a threaded hole and the other is a smooth hole. The fastener can be a screw or bolt. In this case, the operating element 354 can be understood as a knob to facilitate turning the screw or bolt.

[0087] For example, there can be at least two first connection holes 540 and at least two second connection holes 352. When at least two second connection holes 352 are provided on the reinforcing plate 351, they can be located on the same reinforcing plate 351, that is, the collection container 500 is only connected to one side of one of the reinforcing plates 351. Alternatively, at least two second connection holes 352 can be provided on two adjacent reinforcing plates 351, that is, both sides of the collection container 500 are connected to both reinforcing plates 351. This can further improve the connection reliability.

[0088] In this embodiment, the second connecting hole 352 is set on the reinforcing plate 351, which can avoid affecting the sealing of the inner cavity 310 and also makes the assembly operation easier.

[0089] Reference Figures 2 to 8 As shown, in some embodiments, a connecting sleeve 600 is provided on the side of the air hammer mounting base 300 away from the air hammer 200. The connecting sleeve 600 is sleeved on the outside of the first rod segment 110, and a lubricant 610 is provided between the connecting sleeve 600 and the first rod segment 110.

[0090] In practice, the connecting sleeve 600 is connected to the side of the air hammer mounting base 300 away from the air hammer 200 so that a lubricant 610 can be provided between the connecting sleeve 600 and the first rod section 110 to reduce the resistance of the striking rod body 100 during the rapping process, reduce friction, and extend the service life of the air hammer 200.

[0091] For example, the lubricant 610 is a graphite bushing. The graphite bushing has good lubrication performance, which can effectively reduce the moving resistance of the striking rod body 100 during the striking operation, thereby effectively reducing friction, protecting the striking rod, and reducing energy consumption.

[0092] Alternatively, in other implementations, the lubricant 610 may also be lubricating oil or grease.

[0093] Reference Figures 2 to 8 As shown, in some embodiments, a second connecting flange 620 is provided at one end of the connecting sleeve 600 near the air hammer mounting base 300. The second connecting flange 620 is connected to the first connecting flange 340 to facilitate a reliable connection between the two.

[0094] In practice, the first connecting flange 340 is provided with a first mounting hole 341, the second connecting flange 620 is provided with a second mounting hole 621, and the outer wall of the furnace shell 910 is provided with a third mounting hole. The first connecting flange 340, the second connecting flange 620 and the furnace shell 910 are connected together by bolts or screws or other fasteners that pass through the second mounting hole 621, the first mounting hole 341 and the third mounting hole in sequence.

[0095] Reference Figures 2 to 8 As shown, in some embodiments, a heat insulation element 700 is provided between the air hammer mounting base 300 and the air hammer 200.

[0096] In practice, since the air hammer mounting base 300 is connected to the outer wall of the high-temperature furnace shell 910, a heat insulation component 700 is provided on the side of the air hammer mounting base 300 facing the air hammer 200. The heat insulation component 700 can effectively isolate the high temperature of the furnace shell 910 and extend the service life of the air hammer 200.

[0097] For example, the insulation element 700 may be an insulation gasket or an insulation sleeve.

[0098] It should be noted that since the air hammer 200 is also equipped with a third connecting flange 210 that connects to the first connecting flange 340 on the air hammer mounting base 300, the heat insulation component 700 between the two needs to be provided with a clearance hole 710. Alternatively, the radius of the heat insulation component 700 can be set to be smaller than the distance between the center of the first mounting hole 341 on the first connecting flange 340 and the center of the air hammer 200, so as to avoid the connection operation between the first connecting flange 340 and the third connecting flange 210.

[0099] In addition, the heat insulation component 700 is provided with a vent 720 to avoid the inner cavity 310 and the air hammer 200.

[0100] In summary, the air hammer mounting base 300 of the air hammer rapping device in this embodiment, through the design of the first connecting flange 340, the mounting sleeve 330, and the reinforcing structure 350, improves the installation strength and stability of the air hammer 200, ensuring that the air hammer 200 can maintain a good rapping effect under long-term high temperature. The stepped shaft design of the striking rod body 100 and the use of the graphite bushing ensure the strength and stability of the striking rod body 100, prevent the problem of deformation and difficulty in disassembly during long-term high-temperature rapping, and extend the service life of the air hammer 200.

[0101] Furthermore, in this embodiment, the ratio of the elastic force of the reset member 400 to the weight of the striking rod body 100 is in the range of 1 to 2.

[0102] In practice, if the elastic force is too large, the reaction force of the reset component 400 may be too great, impacting the air hammer 200 and the furnace shell 910, thus reducing operational stability. If the elastic force is too small, the striking rod body 100 may not be able to reset effectively, causing interference and friction with the furnace shell 910. In this embodiment, by reasonably setting the ratio range between the elastic force of the reset component 400 and the weight of the striking rod body 100, the impact reaction force on the air hammer 200 during the reset of the striking rod can be reduced, ensuring the stable operation of the air hammer 200.

[0103] For example, the ratio of the elastic force of the reset member 400 to the weight of the striking rod body 100 can be 1, 1.5, or 2.

[0104] In addition, the reset component 400 must be made of a high-temperature resistant material, and its long-term working temperature resistance must be ≥200℃ to ensure its service life.

[0105] Reference Figure 9-1As shown, the air hammer 200 includes an air hammer housing 220 and a hammer head 230 disposed inside the air hammer housing 220. The hammer head 230 is sleeved with the striking rod 100 so that when the air hammer 200 is ventilated, the hammer head 230 drives the striking rod 100 to move. The end of the hammer head 230 near the striking rod 100 is used to extend outside the air hammer housing 220 when the air hammer 200 is not ventilated. This arrangement can prevent foreign objects from being easily brought into the air hammer 200 after long-term operation, which may cause the internal structure to jam and eventually lead to the failure of the air hammer 200.

[0106] For example, the air hammer 200 can be an LP type air hammer (also known as an LP type pneumatic percussion hammer, Long Piston).

[0107] Reference Figure 13 As shown, along the direction from the furnace body 920 to the furnace shell 910, the air hammer mounting base 300 is inclined towards the bottom of the furnace shell 910 to prevent the impact rod 100 from failing due to fatigue fracture of the reset component 400 after long-term use, thus avoiding friction between the impact rod 100 and the furnace shell 910 and damage to the furnace shell 910. At the same time, the air hammer mounting base 300 is installed inclined downwards, and the impact rod 100 tends to move downwards due to its own weight. When the reset component 400 fails, the impact rod 100 will not press against the furnace shell 910 and cause hard friction.

[0108] In specific implementation, refer to Figure 13 As shown, the furnace shell 910 is provided with a mounting base 930 with a fixed downward tilt angle. The mounting angle of the mounting base 930 is fixed and cannot be adjusted. After the air hammer mounting seat 300 is installed on the mounting base 930, the air hammer mounting seat 300 has a certain downward tilt angle relative to the furnace shell 910. The specific tilt angle of the furnace shell 910 is determined by the tilt angle of the mounting base 930 itself; that is, a mounting base 930 with a suitable tilt angle can be selected according to the required mounting tilt angle of the furnace shell 910.

[0109] For example, the mounting angle of the mounting base 930 can be 10°-20°, so that the air hammer mounting base 300 can tilt downward at an angle of 10°-20° relative to the furnace shell 910.

[0110] Reference Figures 1 to 10 As shown, this embodiment provides a pneumatic hammer rapping system, including a controller 800, a gas storage structure, multiple switching valves 810, and multiple pneumatic hammer rapping devices.

[0111] The specific structure and implementation principle of the pneumatic hammer rapping device in this embodiment are the same as those of the pneumatic hammer rapping device provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0112] Specifically, multiple air hammer rapping devices are located in the top area and two side areas of the furnace shell 910; the gas storage structure is connected to the air hammer 200 of each air hammer rapping device, and a switch valve 810 is provided at the air inlet of each air hammer 200. The controller 800 is electrically connected to each switch valve 810 and is used to independently control the start and stop status of each switch valve 810 to switch the rapping mode of the air hammer rapping system.

[0113] In practice, a gas storage structure can be set up to centrally supply gas to each air hammer 200, providing a stable gas supply pressure and ensuring the rapping operation of the air hammer 200. For example, the gas storage structure can be an air tank or an air reservoir.

[0114] For example, the switching valve 810 can be a solenoid valve or an electric diaphragm valve.

[0115] Furthermore, in this embodiment, multiple air hammer rapping devices can be respectively arranged in the top area and two side areas of the furnace shell 910. For example, multiple air hammer rapping devices can be arranged at intervals along the axial direction of the furnace shell 910 in the top area, and multiple air hammer rapping devices are also arranged at intervals along the axial direction of the furnace shell 910 in one side area, and multiple air hammer rapping devices are also arranged at intervals along the axial direction of the furnace shell 910 in the other side, so as to effectively rappel the furnace body 920 through air hammer rapping devices at different positions, thereby effectively improving the cleaning effect of the adhering materials.

[0116] Meanwhile, a controller 800 and a switching valve 810 are set up. By controlling the start and stop of each switching valve 810 through the controller 800, different vibration modes can be realized.

[0117] The vibration mode includes at least one of the following modes: The controller 800 controls the on / off valve 810 of at least one air hammer 200 in the top area of ​​the furnace body 920, the on / off valve of at least one air hammer 200 in one of the two side areas, and the on / off valve 810 of at least one air hammer 200 in the other of the two side areas to start rapping simultaneously, and each air hammer can perform continuous rapping operation according to a fixed rapping cycle.

[0118] The controller 800 controls the simultaneous activation of the switching valves 810 of all air hammers 200 corresponding to at least one temperature zone pipe section of the furnace body 920, and each air hammer can perform continuous rapping operation according to a fixed rapping cycle.

[0119] The furnace body 920 includes multiple temperature zones with different control temperatures, which are divided sequentially along the axial direction, namely the first temperature zone pipe section, the second temperature zone pipe section, ... and the nth temperature zone pipe section (n is greater than or equal to 3).

[0120] The controller 800 controls the simultaneous activation of the switching valves 810 of all air hammers 200, and each air hammer can perform continuous vibration operation according to a fixed vibration cycle.

[0121] The controller 800 controls the start of the on / off valve 810 of a certain air hammer 200 in the furnace body 920 (e.g., the air hammer corresponding to the position to be debugged or repaired).

[0122] It should be noted that in the above-mentioned rapping mode, all rapping operations of the air hammer 200 are performed while the rotary kiln system is in operation.

[0123] Specifically, for the first vibration mode, the controller 800 controls the on / off valve 810 of at least one air hammer 200 in the top area, the on / off valve of at least one air hammer 200 in one of the two side areas, and the on / off valve 810 of at least one air hammer 200 in the other of the two side areas to start simultaneously at a first preset time interval, which can achieve the purpose of periodically vibrating and cleaning a certain area of ​​the furnace body 920.

[0124] For example, the vibration cycle can be manually entered according to the usage, such as 30s, 60s, 120s, etc.

[0125] Specifically, each air hammer rapping device has an individual switch valve 810 for control (i.e., one-to-one control). When the switch valve 810 is opened, it supplies air to the air hammer 200, which then strikes. Multiple switch valves 810 can be opened simultaneously through a program to supply air at the same time, thereby enabling multiple air hammers 200 to start simultaneously.

[0126] For the second vibration mode, the furnace body 920 is divided into a first temperature zone section, a second temperature zone section, and an nth temperature zone section along the axial direction. Each temperature zone section is equipped with a pneumatic hammer vibration device in the top area and two side areas. The controller 800 can control the start of the switch valve 810 of the pneumatic hammer vibration device corresponding to a certain temperature zone section to knock and clean the material adhering to the inner wall of the furnace body 920 in a certain temperature zone section that is prone to material adhesion, so as to realize the vibration cleaning and anti-adhesion wall operation of a specific temperature zone section.

[0127] Specifically, the furnace body 920 can be divided into n equal zones according to its length in the heating area, and the temperature of each zone can be individually controlled by the program (therefore a certain segment is called a certain temperature zone), and the temperature is independently controlled.

[0128] The vibration cycle can be manually input according to the usage, such as 30s, 60s, or 120s. Each air hammer 200 can be started and stopped independently, so all air hammers 200 in one temperature zone can be started at a second preset time interval, or multiple temperature zones or all temperature zones can be started simultaneously at a second preset time interval.

[0129] For the third vibration mode, the controller 800 sets the on / off valve 810 at the air inlet of all air hammers 200 of the air hammer vibration device to start and stop simultaneously, so as to realize that all air hammers 200 vibrate at the same time, so as to achieve a powerful and comprehensive material cleaning operation.

[0130] For the fourth vibration mode, the controller 800 controls the on / off valve 810 of a certain air hammer vibration device to start and stop, so as to realize the vibration of any one of the air hammers 200, thereby realizing the fixed-point debugging or maintenance mode. The debugging or maintenance position of the furnace body 920 here is set according to actual needs.

[0131] The specific first, second, and third preset durations can be limited according to actual needs. The switching valve 810 can specifically be a solenoid valve.

[0132] In summary, the pneumatic hammer rapping system in this embodiment, through the setting of controller 800 and multiple switching valves 810 corresponding to the pneumatic hammer rapping devices, can flexibly adjust the start and stop of the pneumatic hammer 200 rapping and its frequency. It can implement various programmable rapping modes (such as zone rapping, segmented temperature zone rapping, full hammer rapping, and single-point adjustment) according to actual production needs. For example, it can flexibly select the optimal cleaning strategy based on material adhesion and temperature distribution, exhibiting a high degree of automation and strong adaptability. This improves the adaptability and flexibility of the equipment, meeting the needs of different production conditions. Simultaneously, by utilizing the strong rapping force and high striking frequency of the pneumatic hammer 200, it effectively removes adhering materials from the inner wall of the furnace body 920, improving the cleaning effect.

[0133] Reference Figures 1 to 12 As shown, this embodiment provides a rotary kiln system, including a rotary kiln 900 and a pneumatic hammer rapping system.

[0134] The rotary kiln system provided in this embodiment can be used for high-temperature processing of lithium battery cathode materials. The high-temperature processing includes, but is not limited to, drying or sintering. The cathode materials include, but are not limited to, ternary materials or lithium iron phosphate. The system can also be used for high-temperature processing of raw materials for preparing the cathode materials.

[0135] The specific structure and implementation principle of the pneumatic hammer rapping system in this embodiment are the same as those of the pneumatic hammer rapping system provided in the above embodiments, and can bring the same or similar technical effects. They will not be described in detail here, but can be referred to the description of the above embodiments.

[0136] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0137] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A striking rod, characterized in that, Includes the striking rod body (100); One end of the striking rod body (100) is used to cooperate with an external drive transmission, and the other end of the striking rod body (100) is used to extend into the furnace shell (910) of the rotary kiln (900) and form a striking end (121). The striking rod body (100) can reciprocate along the axial direction of the striking rod body (100) under external drive, so as to drive the striking end (121) to strike the furnace body (920) inside the furnace shell (910). In the direction along one end of the striking rod body (100) to the other, the outer diameter of at least a portion of the striking rod body (100), including the striking end (121), gradually decreases.

2. The striking rod according to claim 1, characterized in that, In the direction along one end of the striking rod body (100) to the other end, the striking rod body (100) includes a first rod segment (110) and a second rod segment (120) connected in sequence, and the end of the second rod segment (120) away from the first rod segment (110) forms the striking end (121). The outer diameter of the second rod segment (120) gradually decreases in the direction from one end to the other along the body of the striking rod (100).

3. The striking rod according to claim 2, characterized in that, The ratio of the axial length of the second rod segment (120) to the axial length of the striking rod body (100) ranges from one-fifth to one-quarter; And / or, the ratio of the outer diameter of the striking end (121) to the outer diameter of the first rod segment (110) is in the range of one-half to two-thirds; And / or, the outer diameter of the first rod segment (110) remains unchanged, and the outer diameter of the first rod segment (110) is equal to the outer diameter of the end of the second rod segment (120) that connects to the first rod segment (110), and there is a smooth transition between the first rod segment (110) and the second rod segment (120); And / or, the end face of the striking end (121) away from the first rod segment (110) forms an arc surface, the radius of which is smaller than the radius of the furnace body (920); And / or, the hardness of the striking rod body (100) is less than the hardness of the furnace body (920), and the difference between the hardness of the furnace body (920) and the hardness of the striking rod body (100) is in the range of 20HB-30HB. And / or, the first rod segment (110) and the second rod segment (120) are integrally formed.

4. A pneumatic hammer rapping device, characterized in that, It includes an air hammer (200), an air hammer mounting base (300), a reset member (400), and a striking rod as described in any one of claims 1 to 3; The air hammer mounting base (300) is provided on the outer wall of the furnace shell (910) and has an inner cavity (310). The air hammer (200) is provided on one side of the air hammer mounting base (300) and communicates with the inner cavity (310). A through hole (320) communicating with the inner cavity (310) is provided on the side of the air hammer mounting base (300) away from the air hammer (200). The first rod segment (110) passes through the through hole (320) and is inserted into the inner cavity (310). The reset component (400) is located in the inner cavity (310) and sleeved on the first rod segment (110). The first rod segment (110) can move under the action of the air hammer (200) and can be reset under the action of the reset component (400).

5. The pneumatic hammer rapping device according to claim 4, characterized in that, The air hammer mounting base (300) includes a mounting sleeve (330) having the inner cavity (310) and first connecting flanges (340) disposed at both ends of the mounting sleeve (330) in the axial direction. The two first connecting flanges (340) are respectively connected to the air hammer (200) and the outer wall of the furnace shell (910). The outer wall of the mounting sleeve (330) is provided with a reinforcing structure (350).

6. The pneumatic hammer rapping device according to claim 5, characterized in that, The reinforcing structure (350) includes at least two reinforcing plates (351) spaced circumferentially along the mounting sleeve (330). The reinforcing plate (351) is connected to the two first connecting flanges (340) at both ends along the axial direction of the mounting sleeve (330); And / or, the mounting sleeve (330), the reinforcing plate (351), and the first connecting flange (340) are integrally formed.

7. The pneumatic hammer rapping device according to claim 6, characterized in that, A limiting structure (140) is formed on the outer wall of the first rod segment (110), the limiting structure (140) being located in the inner cavity (310) and used to restrict the first rod segment (110) from detaching from the inner cavity (310).

8. The pneumatic hammer rapping device according to claim 7, characterized in that, The limiting structure (140) includes a limiting protrusion (141) that protrudes in a direction away from the outer wall of the first rod segment (110). And / or, there are at least two limiting structures (140), and at least two limiting structures (140) are distributed sequentially along the axial direction of the first rod segment (110), and the outer diameter of the limiting structure (140) near the striking end (121) is smaller than the outer diameter of the limiting structure (140) away from the striking end (121), and the reset member (400) is sleeved on the limiting structure (140) near the striking end (121).

9. The pneumatic hammer rapping device according to claim 5, characterized in that, The outer wall of the mounting sleeve (330) is provided with an outlet (331) communicating with the inner cavity (310), and the reinforcing plate (351) or the mounting sleeve (330) is provided with a collection container (500) communicating with the outlet (331).

10. The pneumatic hammer rapping device according to claim 9, characterized in that, The collection container (500) includes a bottom shell (510) and a side shell (520), which together form a collection cavity with an opening facing the outlet (331). The side shell (520) is respectively disposed on the opposite side walls of the two adjacent reinforcing plates (351) away from each other along the circumferential direction of the mounting sleeve (330). The side shell (520) is inserted between the two adjacent reinforcing plates (351) on the opposite side walls along the axial direction of the mounting sleeve (330). The side shell (520) is provided with relief grooves (530) on the opposite side walls along the axial direction of the mounting sleeve (330) to avoid the reinforcing plates (351). And / or, the collection container (500) is provided with a first connection hole (540), the reinforcing plate (351) or the mounting sleeve (330) is provided with a second connection hole (352), and the collection container (500) is connected to the reinforcing plate (351) or the mounting sleeve (330) through a fastener (353) passing through the first connection hole (540) and the second connection hole (352).

11. The pneumatic hammer rapping device according to claim 6, characterized in that, A connecting sleeve (600) is provided on the side of the air hammer mounting base (300) away from the air hammer (200). The connecting sleeve (600) is sleeved on the outside of the first rod segment (110). A lubricating element (610) is provided between the connecting sleeve (600) and the first rod segment (110).

12. The pneumatic hammer rapping device according to claim 11, characterized in that, The lubricating component (610) is a graphite bushing; And / or, a second connecting flange (620) is provided at one end of the connecting sleeve (600) near the air hammer mounting base (300), and the second connecting flange (620) is connected to the first connecting flange (340); And / or, a heat insulation element (700) is provided between the air hammer mounting base (300) and the air hammer (200); And / or, the ratio of the elastic force of the reset member (400) to the weight of the striking rod body (100) is in the range of 1 to 2; And / or, the air hammer (200) includes an air hammer housing (220) and a hammer head (230) disposed within the air hammer housing (220), the hammer head (230) being sleeved and fitted with the striking rod (100) so that when the air hammer (200) is ventilated, the hammer head (230) drives the striking rod (100) to move; and one end of the hammer head (230) near the striking rod (100) is used to extend outside the air hammer housing (220) when the air hammer (200) is not ventilated; And / or, in the direction along the furnace body (920) to the furnace shell (910), the air hammer mounting base (300) is inclined toward the bottom of the furnace shell (910).

13. A pneumatic hammer vibration system, characterized in that, It includes a controller (800), a gas storage structure, multiple switching valves (810), and multiple pneumatic hammer rapping devices as described in any one of claims 4 to 12; Multiple air hammer rapping devices are respectively located in the top area and two side areas of the furnace shell (910); the gas storage structure is connected to the air hammer (200) of each air hammer rapping device, and a switching valve (810) is provided at the air inlet of each air hammer (200). The controller (800) is electrically connected to each switching valve (810) and is used to independently control the start and stop status of each switching valve (810) to switch the rapping mode of the air hammer rapping system. The vibration mode includes at least one of the following modes: The controller (800) controls the simultaneous activation of the on / off valve (810) of at least one air hammer (200) in the top region, the on / off valve of at least one air hammer (200) in one of the two side regions, and the on / off valve (810) of at least one air hammer (200) in the other of the two side regions. The controller (800) controls the simultaneous activation of the switching valves (810) of all the air hammers (200) corresponding to at least one temperature zone pipe segment of the furnace body (910), wherein the furnace body (910) includes a first temperature zone pipe segment, a second temperature zone pipe segment and an nth temperature zone pipe segment divided sequentially along the axial direction. The controller (800) controls the on / off valves (810) of all the pneumatic hammers (200) to start simultaneously; The controller (800) controls the start of the switching valve (810) of a certain air hammer (200) at the debugging or maintenance position of the furnace body (910).

14. A rotary kiln system, characterized in that, It includes a rotary kiln (900) and a pneumatic hammer rapping system as described in claim 13.

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