A kind of cast high-toughness nodular cast iron alloy spheroidizing agent processing crusher

Abstract

This application discloses a crusher for processing spheroidizing agents in as-cast high-toughness ductile iron alloys, belonging to the technical field of spheroidizing agent processing equipment. It mainly includes a processing table, with a support frame mounted on the top surface of the processing table. Inside the support frame is a crushing device for processing spheroidizing agents in as-cast high-toughness ductile iron alloys. The crushing device includes a crushing chamber, with an air inlet assembly for introducing nitrogen gas installed at the top and an exhaust pipe installed at the bottom. Through the combined design of the top air inlet assembly, the ring pipe, and the downward-sloping air inlet branch pipe, an external nitrogen source is introduced into the crushing chamber through the main air inlet pipe, forming a top-down inert gas protective layer inside the chamber. This rapidly replaces the oxygen inside the chamber, reducing the oxygen concentration to an extremely low level, effectively isolating active elements such as magnesium and rare earth elements in the spheroidizing agent from contact with air. Compared with traditional crushing equipment, this greatly reduces the loss of effective components, ensuring that the spheroidizing agent fully exerts its spheroidizing effect during the casting process and improving the quality of the castings.

Description

Technical Field

[0001] This application relates to the technical field of spheroidizing agent processing equipment, specifically a crusher for processing spheroidizing agents on cast high-toughness ductile iron alloy. Background Technology

[0002] As-cast high-toughness spheroidizing agent for ductile iron is a crucial functional material in the casting process. By altering the morphology of graphite in molten iron, transforming it from flakes to spheroids, it significantly improves the strength, toughness, and fatigue resistance of cast iron. It is widely used in automotive parts, machinery manufacturing, and pipeline engineering. Before use, the spheroidizing agent needs to be crushed to a suitable particle size to ensure rapid and uniform dissolution in molten iron, fully realizing the spheroidizing effect and improving casting quality.

[0003] However, traditional crushing equipment lacks inert gas protection. When the active elements such as magnesium and rare earth elements in the spheroidizing agent come into contact with air during the crushing process, they are prone to oxidation, which leads to the loss of the effective components of the spheroidizing agent and affects the spheroidizing effect. In addition, the existing crushing equipment has insufficient sealing during the feeding, discharging and crushing processes, which allows outside air to enter and destroys the oxygen-free environment. At the same time, material dust is easy to leak out and pollute the working environment.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] The purpose of this invention is to provide a crusher for processing as-cast high-toughness ductile iron alloy spheroidizing agents, so as to solve the problems mentioned in the background art.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A crusher for processing as-cast high-toughness ductile iron alloy spheroidizing agent includes a processing table, a support frame mounted on the top surface of the processing table, and a crushing device for processing as-cast high-toughness ductile iron alloy spheroidizing agent installed inside the support frame. The crushing device includes a crushing chamber, a fixed grinding ring fixedly mounted on the inner side wall of the crushing chamber, a grinding cone rotatably mounted inside the crushing chamber, a drive assembly eccentrically mounted at the bottom of the grinding cone, and a sealed shaft chamber integrally formed at the bottom of the crushing chamber, with the drive assembly installed in the sealed shaft chamber.

[0008] The top of the crushing chamber is equipped with an air intake assembly for introducing nitrogen, and the bottom of the crushing chamber is equipped with an exhaust pipe.

[0009] Preferably, the air intake assembly includes an air intake main pipe, an annular pipe, and air intake branch pipes. The air intake main pipe is installed on the top side wall of the crushing chamber. A cavity is opened at the top of the crushing chamber. The annular pipe is fixedly installed in the cavity. The outer side of the annular pipe is connected to the air intake main pipe. Air intake branch pipes are installed at equal intervals on the inner side of the annular pipe. The ends of the air intake branch pipes extend into the crushing chamber.

[0010] Preferably, the ends of the plurality of air intake branches are inclined downwards inside the crushing chamber.

[0011] Preferably, the bottom of the crushing chamber is provided with an air outlet, and the exhaust pipe is installed on the side wall of the crushing chamber located at the air outlet.

[0012] Preferably, an upper pneumatic butterfly valve is installed on the top surface of the crushing chamber, and a feed hopper is installed on the top surface of the upper pneumatic butterfly valve.

[0013] Preferably, a lower pneumatic butterfly valve is installed on the bottom surface of the crushing chamber, and a discharge chamber is installed on the bottom surface of the lower pneumatic butterfly valve.

[0014] Preferably, the drive assembly includes a mounting column, a turntable, a gear plate, a gear, and a drive rod. The bottom surface of the grinding cone has an eccentric hole, and the mounting column is inserted into the eccentric hole. The bottom of the mounting column is fixedly connected to the turntable, and the bottom surface of the turntable is fixedly installed with the gear plate near its edge. The side wall of the gear meshes with the gear plate, and the inside of the gear is keyed to one end of the drive rod. The side wall of the drive rod is rotatably connected to the bottom side wall of the crushing chamber through a bearing seat.

[0015] The beneficial effects of this application are:

[0016] 1. Through the coordinated design of the top air intake assembly, ring pipe, and downward-sloping air intake branch pipe, an external nitrogen source is introduced into the crushing chamber via the main air intake pipe, forming a top-down inert gas protective layer within the chamber. This rapidly replaces the oxygen in the chamber, reducing the oxygen concentration to an extremely low level. Simultaneously, the bottom exhaust pipe, along with the vent, discharges the existing air and excess nitrogen, maintaining gas circulation and pressure balance. This ensures a stable oxygen-free environment. The full-process nitrogen protection mechanism effectively isolates active elements such as magnesium and rare earth elements in the spheroidizing agent from contact with air. Compared to traditional crushing equipment, this significantly reduces the loss of effective components, ensuring that the spheroidizing agent fully exerts its spheroidizing effect during the casting process and improving casting quality.

[0017] 2. By installing upper and lower pneumatic butterfly valves on the top and bottom surfaces of the crushing chamber respectively, the entry of outside air and leakage of material dust are blocked. Compared with traditional crushing equipment with insufficient sealing, this not only effectively protects the oxygen-free environment inside the crushing chamber, but also significantly improves the working environment, reduces the harm of dust to the health of operators, and meets the strict requirements of environmental regulations on industrial dust emissions, thus achieving green and environmentally friendly production.

[0018] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of a crusher for processing as-cast high-toughness ductile iron alloy spheroidizing agent according to the present invention;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the fixed grinding ring, grinding cone, and drive assembly of this utility model;

[0022] Figure 3 This is a schematic diagram of the grinding cone and drive assembly structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the crushing chamber of this utility model;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the air intake component and the crushing chamber of this utility model;

[0025] Figure 6 This is a schematic diagram of the air intake assembly structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the assembly structure of the exhaust pipe and crushing chamber of this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 1. Processing table;

[0029] 2. Support frame;

[0030] 3. Crushing chamber;

[0031] 31. Fixed grinding ring; 32. Grinding cone; 321. Eccentric hole;

[0032] 33. Drive assembly; 331. Mounting post; 332. Turntable; 333. Gear disc; 334. Gear; 335. Drive rod;

[0033] 34. Sealed shaft housing;

[0034] 4. Upper pneumatic butterfly valve;

[0035] 6. Feed hopper;

[0036] 7. Lower pneumatic butterfly valve;

[0037] 8. Discharge hopper;

[0038] 9. Intake assembly; 91. Main intake pipe; 92. Circular manifold; 93. Branch intake manifold;

[0039] 5. Exhaust pipe; 51. Air outlet. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0042] Please see Figure 1-7 The embodiments provided by this utility model are as follows:

[0043] like Figure 1 As shown, a crusher for processing as-cast high-toughness ductile iron alloy spheroidizing agents includes a processing table 1, which serves as the basic support structure for the entire crusher. A support frame 2 is mounted on the top surface of the processing table 1, and a crushing device for processing as-cast high-toughness ductile iron alloy spheroidizing agents is installed inside the support frame 2. Figure 2-4 As shown, the crushing device includes a crushing chamber 3. A fixed grinding ring 31 is fixedly installed on the inner side wall of the crushing chamber 3 to form a fixed crushing working surface. A grinding cone 32 is rotatably installed inside the crushing chamber 3. A drive assembly 33 is eccentrically installed at the bottom of the grinding cone 32. A sealed shaft chamber 34 is integrally formed at the bottom of the crushing chamber 3. The drive assembly 33 is installed in the sealed shaft chamber 34.

[0044] Specifically, the drive assembly 33 includes a mounting post 331, a turntable 332, a gear 333, a gear 334, and a drive rod 335. The bottom surface of the grinding cone 32 has an eccentric hole 321. The mounting post 331 is inserted into the eccentric hole 321. The bottom of the mounting post 331 is fixedly connected to the turntable 332. The bottom surface of the turntable 332 is fixedly installed near the edge with the gear 333. The side wall of the gear 334 meshes with the gear 333. The inside of the gear 334 is keyed to one end of the drive rod 335. The side wall of the drive rod 335 is rotatably connected to the bottom side wall of the crushing chamber 3 through a bearing seat. The other end of the drive rod 335 is keyed to the drive device. The drive device provides power to make the grinding cone 32 rotate in the fixed grinding ring 31.

[0045] A drive device, such as a motor, provides power to the drive rod 335. The drive rod 335 rotates under the support of a bearing housing. The drive rod 335 drives the gear 334 to rotate via a key connection. The gear 334 meshes with a gear disc 333, which is fixed to the bottom edge of the turntable 332. The turntable 332 is connected to the eccentric hole 321 on the bottom surface of the grinding cone cylinder 32 via a mounting post 331. Because the mounting post 331 is inserted into the eccentric hole 321, the grinding cone cylinder 32 performs eccentric circular motion under the drive of the turntable 332, i.e., grinding... While the cone 32 rotates around its own axis, its axis also makes a circular motion around the central axis of the crushing chamber 3. This eccentric rotation causes the gap between the outer surface of the grinding cone 32 and the inner wall of the fixed grinding ring 31 to change periodically. During the process of the material falling in the crushing chamber 3, it first undergoes preliminary crushing through a larger gap, and then undergoes fine grinding through a smaller gap, realizing multi-stage crushing, improving crushing efficiency and the uniformity of finished particle size. At the same time, the complex stress generated by the eccentric motion can better crush high-hardness and high-toughness spheroidizing agent raw materials.

[0046] like Figure 5 and Figure 6 As shown, an air intake assembly 9 for introducing nitrogen is installed on the top of the crushing chamber 3. The air intake assembly 9 includes an air intake main pipe 91, an annular pipe 92, and air intake branch pipes 93. The air intake main pipe 91 is installed on the top side wall of the crushing chamber 3. A cavity is opened in the top of the crushing chamber 3, and the annular pipe 92 is fixedly installed in the cavity. The outer side of the annular pipe 92 is connected to the air intake main pipe 91. Air intake branch pipes 93 are installed at equal intervals on the inner side of the annular pipe 92. The ends of the air intake branch pipes 93 extend into the crushing chamber 3. An external nitrogen source is connected to the top side wall of the crushing chamber 3 through the air intake main pipe 91 and enters the annular pipe 92 in the cavity opened in the top of the crushing chamber 3. The annular pipe 92 evenly distributes the nitrogen to the equally spaced air intake branch pipes 93. The continuous introduction of nitrogen can replace the oxygen in the crushing chamber 3, reducing the oxygen concentration in the chamber to an extremely low level. This provides an oxygen-free environment for the crushing of the spheroidizing agent raw material, effectively inhibits the oxidation of active elements such as magnesium and rare earth elements, and ensures that the effective components of the spheroidizing agent are not lost.

[0047] Furthermore, the ends of multiple air inlet branch pipes 93 are inclined downwards inside the crushing chamber 3, extending downwards into the interior of the crushing chamber 3. This allows nitrogen gas to spiral downwards along the inner wall of the crushing chamber 3, forming a top-to-bottom inert gas protective layer within the crushing chamber 3. This allows for more complete replacement of air and the formation of a gas film on the material surface, enhancing the protective effect.

[0048] like Figure 7 As shown, an exhaust pipe 5 is installed at the bottom of the crushing chamber 3, and an air outlet 51 is opened through the bottom of the crushing chamber 3. The exhaust pipe 5 is installed on the side wall of the crushing chamber 3 located at the air outlet 51. During the process of the air intake component 9 continuously introducing nitrogen into the crushing chamber 3, the original air and some excess nitrogen in the crushing chamber 3 are discharged through the air outlet 51 at the bottom and the exhaust pipe 5 installed at the air outlet 51, maintaining the flow and pressure balance of the gas in the crushing chamber 3, ensuring that fresh nitrogen can continuously enter the crushing chamber 3, ensuring the stability of the oxygen-free environment in the chamber, and at the same time discharging a small amount of dust and gas impurities that may be generated during the crushing process.

[0049] like Figure 1 As shown, an upper pneumatic butterfly valve 4 is installed on the top surface of the crushing chamber 3, a feed hopper 6 is installed on the top surface of the upper pneumatic butterfly valve 4, a lower pneumatic butterfly valve 7 is installed on the bottom surface of the crushing chamber 3, and a discharge hopper 8 is installed on the bottom surface of the lower pneumatic butterfly valve 7. When feeding is required, the upper pneumatic butterfly valve 4 opens, and the spheroidizing agent raw material falls from the feed hopper 6 into the crushing chamber 3. After feeding is completed, the upper pneumatic butterfly valve 4 closes to prevent nitrogen leakage. The lower pneumatic butterfly valve 7 is installed on the bottom surface of the crushing chamber 3 to control the connection between the crushing chamber 3 and the discharge hopper 8. After crushing is completed, the lower pneumatic butterfly valve 7 opens, and the crushed spheroidizing agent falls from the crushing chamber 3 into the discharge hopper 8. After discharge is completed, the lower pneumatic butterfly valve 7 closes. The pneumatic butterfly valves realize automated control of the feeding and discharging process, ensuring the sealing of the crushing chamber 3, preventing outside air from entering and disrupting the oxygen-free environment, and preventing material dust from leaking out.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A crusher for processing spheroidizing agents in cast high-toughness ductile iron alloys, comprising a processing table (1), a support frame (2) mounted on the top surface of the processing table (1), and a crushing device for processing spheroidizing agents in cast high-toughness ductile iron alloys installed inside the support frame (2), characterized in that: The crushing device includes a crushing chamber (3), a fixed grinding ring (31) is fixedly installed on the inner side wall of the crushing chamber (3), a grinding cone (32) is rotatably installed inside the crushing chamber (3), a drive assembly (33) is eccentrically installed at the bottom of the grinding cone (32), a sealed shaft chamber (34) is integrally formed at the bottom of the crushing chamber (3), and the drive assembly (33) is installed in the sealed shaft chamber (34). The top of the crushing chamber (3) is equipped with an air intake assembly (9) for introducing nitrogen, and the bottom of the crushing chamber (3) is equipped with an exhaust pipe (5).

2. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 1, characterized in that: The air intake assembly (9) includes an air intake main pipe (91), an annular pipe (92), and an air intake branch pipe (93). The air intake main pipe (91) is installed on the top side wall of the crushing chamber (3). A cavity is opened at the top of the crushing chamber (3). The annular pipe (92) is fixedly installed in the cavity. The outer side of the annular pipe (92) is connected to the air intake main pipe (91). The inner side of the annular pipe (92) is equipped with air intake branch pipes (93) at equal intervals. The end of the air intake branch pipe (93) extends into the crushing chamber (3).

3. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 2, characterized in that: The ends of the multiple air intake branches (93) are inclined downwards inside the crushing chamber (3).

4. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 3, characterized in that: The bottom of the crushing chamber (3) is provided with an air outlet (51), and the exhaust pipe (5) is installed on the side wall of the crushing chamber (3) located at the air outlet (51).

5. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 1, characterized in that: The top surface of the crushing chamber (3) is equipped with an upper pneumatic butterfly valve (4), and the top surface of the upper pneumatic butterfly valve (4) is equipped with a feed hopper (6).

6. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 5, characterized in that: The bottom surface of the crushing chamber (3) is equipped with a lower pneumatic butterfly valve (7), and the bottom surface of the lower pneumatic butterfly valve (7) is equipped with a discharge chamber (8).

7. The crusher for processing cast high-toughness ductile iron alloy spheroidizing agent according to claim 1, characterized in that: The drive assembly (33) includes a mounting post (331), a turntable (332), a gear disc (333), a gear (334), and a drive rod (335). The bottom surface of the grinding cone (32) is provided with an eccentric hole (321). The mounting post (331) is inserted into the eccentric hole (321). The bottom of the mounting post (331) is fixedly connected to the turntable (332). The bottom surface of the turntable (332) is fixedly installed with the gear disc (333) near the edge. The side wall of the gear (334) is meshed with the gear disc (333). The inside of the gear (334) is keyed to one end of the drive rod (335). The side wall of the drive rod (335) is rotatably connected to the bottom side wall of the crushing chamber (3) through a bearing seat.

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