Metallurgical slag crusher

Abstract

The present invention relates to the field of metallurgy, and specifically to a metallurgical slag crusher. The crusher includes a crusher cylinder, end covers and a main shaft, a driving device and a water system. The crusher cylinder is welded with thick-walled steel pipes. End covers are provided at both ends of the crusher cylinder, and crusher claws are fixed on the surface. The crusher claws are covered with claw sleeves on the outside. The main shaft passes through the crusher cylinder and is connected to a driving device for driving the metallurgical slag crusher to rotate. The interior of the crusher cylinder is arranged with supporting partitions, cooling water return pipes and central channels. The crusher cylinder of the present application has high strength and low processing cost. The steel pipe on the crusher cylinder is both a load-bearing component and a cooling water channel to prevent the cylinder from being subjected to excessive temperature rise due to heat radiation from metallurgical slag.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, and in particular to a metallurgical slag crusher. Background Art

[0002] During the steel smelting process, a large amount of molten or semi-molten metallurgical slag is produced. These metallurgical slags can be pulverized by water cooling or air cooling. During the processing, the metallurgical slag needs to be rolled by a crusher to prevent the formation of large pieces of solid slag. Since the temperature of metallurgical slag is very high, the crusher needs to be resistant to high temperature and wear.

[0003] Existing metallurgical slag processing equipment uses thick steel plates rolled into rollers, with roller teeth and roller sleeves welded on the outer surface. The roller sleeves are cast with high-temperature resistant alloys and directly contact the high-temperature slag to perform crushing actions. Cooling water is passed through the rollers for cooling. For example, patent CN202096976U, a crushing roller for steel slag processing. This equipment is difficult to process and has high costs. The connection between the roller teeth and the roller sleeve is simple and easily damaged by high-temperature metallurgical slag. Summary of the invention

[0004] The object of the present invention is to provide a metallurgical slag crusher.

[0005] The metallurgical slag crusher of the present invention comprises a crusher cylinder, an end cover and a main shaft, a driving device and a water system, wherein:

[0006] The crusher cylinder is welded with thick-walled steel pipes. End covers are arranged at both ends of the crusher cylinder. Crusher claws are fixed on the surface of the crusher cylinder. Claw sleeves are placed outside the crusher claws.

[0007] The main shaft is a hollow structure, passes through the crusher cylinder, is welded to the crusher end cover, and is connected to a driving device for driving the metallurgical slag crusher to rotate.

[0008] The crusher cylinder is provided with supporting baffles, cooling water return pipes and a central channel.

[0009] The steel pipe and end cover constituting the outer cylinder of the crusher, the internal channel of the main shaft, and the crusher cooling water circuit rotary valve body installed at one end of the crusher and cooperating with the crusher main shaft and capable of relatively rotating constitute a cooling water circuit system. According to the metallurgical slag crusher of the present invention, the base of the crusher claw is a curved surface structure, which is matched with the outer surface of the cylinder.

[0010] According to the metallurgical slag crusher of the present invention, the driving device comprises a crusher rotation driving gear, a pinion and a hydraulic motor.

[0011] According to the metallurgical slag crusher of the present invention, the crusher rotationally drives the large gear connected to the main shaft of the crusher, and two driving hydraulic motors jointly drive the large gear through the small gears respectively, thereby driving the crusher to rotate.

[0012] According to the metallurgical slag crusher of the present invention, two driving hydraulic motors and a pinion are installed on a support frame, and the support frame is connected to the crusher main shaft through a bearing, thereby ensuring the parallelism between the pinion and the large gear axis.

[0013] According to the metallurgical slag crusher of the present invention, the crusher claw and the claw sleeve adopt a concealed steel ball locking connection form, and the outer surface of the claw and the inner surface of the claw sleeve are respectively processed with semicircular ring grooves, and the two are assembled together to form a complete circular ring channel. 12 steel balls are installed into the circular ring channel through the holes on the four surfaces of the claw sleeve, and then one hexagon socket screw is screwed into each of the four holes to lock the steel balls in the circular ring channel. Then, the four holes are blocked with plugs to prevent the screws from contacting the hot slag.

[0014] The advantages of the technical solution of the present invention are:

[0015] 1) The crusher cylinder is formed by welding thick-walled steel pipes, which cooperate with the internal supporting partitions. The cylinder has high strength and low processing cost.

[0016] 2) The steel pipe on the crusher cylinder is not only a load-bearing component, but also a cooling water channel to prevent the cylinder from being overheated by the heat radiation of metallurgical slag. Through the special internal water channel design, a normal temperature channel is formed in the center of the crusher cylinder, which is convenient for the layout of hydraulic pipelines and cables.

[0017] 3) The crusher claw and claw sleeve adopt the concealed steel ball locking connection form, which has a simple and compact structure, is not affected by the heat radiation of metallurgical slag, and works reliably. The claw sleeve is easy to disassemble and replace.

[0018] 4) The crusher rotation drive device adopts a floating support structure, which reduces the difficulty of processing and assembly and improves the working reliability of the drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the metallurgical slag crusher of the present invention;

[0020] Figure 2 It is a schematic diagram of the crusher cylinder structure of the metallurgical slag crusher of the present invention;

[0021] Figure 3 It is a longitudinal section view of the metallurgical slag crusher of the present invention;

[0022] Figure 4 is a cross-sectional view of a metallurgical slag crusher of the present invention;

[0023] Figure 5 It is a schematic structural diagram of a crusher claw and a claw sleeve of a metallurgical slag crusher of the present invention;

[0024] Figure 6 A longitudinal section of a crusher claw and a claw sleeve of a metallurgical slag crusher of the present invention;

[0025] Figure 7 A cross-sectional view of a crusher claw and a claw sleeve of a metallurgical slag crusher of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the metallurgical slag crusher of the present invention, wherein the crusher driving device is floatingly supported on the main shaft;

[0027] Fig. 9 This is an axial view of the valve body of the metallurgical slag crusher cooling water circuit rotary valve of the present invention;

[0028] Fig.10 A cross-sectional view of a valve body of a rotary valve for a cooling water circuit of a metallurgical slag crusher according to the present invention

[0029] Reference numerals:

[0030] 2.1: Cylinder; 2.2: End cover; 2.3: Main shaft; 2.4: Claw of breaker; 2.5: Claw sleeve of breaker; 2.6: Crushers rotation drive gear; 2.7-: Crushers rotation drive pinion; 2.8: Crushers rotation drive hydraulic motor; 2.9: Crushers rotation drive floating support frame; 2.10: Crushers cooling water circuit rotary valve body; 2.11: Crushers central channel; 2.12: Locking steel ball; 2.13: Limit screw; 2.14: Plug

[0031] a: Cooling water inlet channel; b: Cooling water return channel DETAILED DESCRIPTION

[0032] The object of the present invention is to provide a metallurgical slag crusher which has a simple and reliable structure and low manufacturing and use costs.

[0033] The metallurgical slag crusher according to the present invention comprises a crusher cylinder, an end cover and a main shaft, a driving device and a waterway system, wherein:

[0034] The crusher cylinder is welded with thick-walled steel pipes. End covers are arranged at both ends of the crusher cylinder. Crusher claws are fixed on the surface of the crusher cylinder. Claw sleeves are placed outside the crusher claws.

[0035] The main shaft is a hollow structure, passes through the crusher cylinder, is welded to the crusher end cover, and is connected to a driving device for driving the metallurgical slag crusher to rotate.

[0036] The crusher cylinder is provided with supporting baffles, cooling water return pipes and a central channel.

[0037] The cooling water system is composed of a steel pipe and an end cover constituting the outer cylinder of the crusher, an internal channel of the main shaft, and a crusher cooling water rotary valve body installed at one end of the crusher and cooperating with the crusher main shaft and capable of relatively rotating.

[0038] The structure of the metallurgical slag crusher of the present application is described below with reference to the accompanying drawings.

[0039] like Figure 1 As shown, the metallurgical slag crusher of the present invention comprises a crusher cylinder 2.1, an end cover 2.2, a main shaft 2.3, a driving device and a cooling water system. The crusher cylinder 2.1, the end cover 2.2 and the main shaft 2.3 form a supporting structure, and the crusher claw 2.4 and the claw sleeve 2.5 are arranged on the surface of the crusher cylinder 2.1. The crusher cylinder 2.1 is provided with end covers 2.2 at both ends.

[0040] According to a specific embodiment of the present invention, the crusher is rotated by a driving device consisting of a large gear 2.6, a small gear 2.7 and a hydraulic motor 2.8.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, the crusher cylinder 2.1 is welded with thick-walled steel pipes, and a supporting partition, a cooling water return pipe and a central channel 2.11 are arranged inside. The steel pipe constituting the crusher outer cylinder is not only a crusher bearing structure, but also a cooling water channel. It forms a cooling water system with the end cover, the internal channel of the main shaft and the crusher cooling water circuit rotary valve body installed at one end of the crusher, which cooperates with the crusher main shaft and can rotate relatively. The cooling water enters the internal water inlet annular groove from the rotary valve body, passes through the water inlet channel a inside the main shaft, the cavity between the crusher end cover and the partition, and enters each thick-walled steel pipe constituting the crusher cylinder, and then enters the cavity between the end cover and the partition on the other side of the crusher from the other end of the thick-walled steel pipe, and then passes through each partition from the cooling water return channel b, returns to the crusher water inlet end, communicates with the return channel inside the main shaft, and then passes through the return water annular groove inside the rotary valve body, and finally leaves from the water outlet on the rotary valve body. Through the above cooling water system, the contact area between the cooling water and the crusher is large, the heat exchange is sufficient, and the cooling efficiency is high.

[0042] like Figure 3 As shown, the central channel 2.11 of the crusher is a transparent structure. Since it is surrounded by cooling water, the internal environment is close to normal temperature and can be used to arrange hydraulic pipelines, cables, etc.

[0043] like Figure 4and Figure 5 As shown, the base of the crusher claw 2.4 is made into a curved surface structure, matched with the outer surface of the cylinder (between the two steel pipes), and welded together, which is convenient for positioning and reliable for connection.

[0044] like Figure 6 and Figure 7 As shown, the crusher claw 2.4 and the claw sleeve 2.5 adopt a concealed steel ball locking connection form. The outer surface of the claw and the inner surface of the claw sleeve are respectively processed with semicircular ring grooves. The two are assembled together to form a complete circular ring channel. Through the holes on the four surfaces of the claw sleeve, 12 steel balls 2.12 are installed into the circular ring channel, and then a hexagon socket screw 2.13 is screwed into each of the four holes to lock the steel balls in the circular ring channel. Then use the plug 2.14 to block the four holes to prevent the screws from contacting the hot slag. During the use of the crusher, the crusher claw and the claw sleeve are locked by the internal steel ball, and the connection is reliable. The limit screw only limits the circumferential movement of the steel ball and does not bear the load. The locking steel ball and the limit screw are hidden inside the claw sleeve, do not contact the hot slag, and work reliably.

[0045] After the crusher has been used for a period of time, when the claw sleeve is severely worn, drill out the plug 2.14 on the claw sleeve, remove the limit screw 2.13, and continuously rotate the claw sleeve until all the locking steel balls are squeezed out of the annular hole and then separated from the claw.

[0046] like Figure 8 As shown, the crusher rotation driving gear 2.6 is connected to the crusher main shaft, and two driving hydraulic motors 2.8 drive the gear through the pinion 2.7 to drive the crusher to rotate. The two driving hydraulic motors and the pinion are installed on the crusher rotation driving floating support frame 2.9, which is connected to the crusher main shaft through the bearing, thereby ensuring the parallelism between the pinion and the gear axis, reducing the difficulty of processing and assembly, and improving the working reliability of the drive system.

[0047] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A metallurgical slag crusher, characterized in that: The crusher includes a crusher cylinder, an end cover and a main shaft, a driving device and a water system, wherein: The crusher cylinder is welded with thick-walled steel pipes. End covers are arranged at both ends of the crusher cylinder. Crusher claws are fixed on the surface of the crusher cylinder. Claw sleeves are placed outside the crusher claws. The main shaft is a hollow structure, passes through the crusher cylinder, is welded to the end cover, and is connected to a driving device for driving the metallurgical slag crusher to rotate. The crusher cylinder is provided with supporting baffles, cooling water return pipes and a central channel. The thick-walled steel pipe constituting the outer cylinder of the crusher, the end cover, the channel inside the main shaft, and the crusher cooling water circuit rotary valve body installed at one end of the crusher and cooperating with the main shaft and rotating relatively therewith constitute a cooling water circuit system. The cooling water enters the water inlet annular groove inside the crusher cooling water circuit rotary valve body, passes through the water inlet channel a inside the main shaft, the cavity between one end cover and the supporting baffle, enters one end of each of the thick-walled steel pipes, and then enters the cavity between the end cover and the supporting baffle on the other side of the crusher from the other end of the thick-walled steel pipe, and then passes through each of the supporting baffles from the cooling water return channel b inside the main shaft, returns to the water inlet end of the crusher, communicates with the return channel inside the main shaft, and then passes through the return water annular groove inside the crusher cooling water circuit rotary valve body, and finally flows out from the water outlet on the crusher cooling water circuit rotary valve body. The crusher claw and claw sleeve adopt a concealed steel ball locking connection form, and the outer surface of the claw and the inner surface of the claw sleeve are respectively processed with semicircular ring grooves, and the two are assembled together to form a complete circular ring channel.

2. The metallurgical slag crusher according to claim 1, characterized in that: The base of the crusher claw is a curved surface structure, which matches the outer surface of the cylinder.

3. The metallurgical slag crusher according to claim 1, characterized in that: The driving device comprises a large gear, a small gear and a hydraulic motor for driving the crusher to rotate.

4. The metallurgical slag crusher according to claim 3, characterized in that: The large gear that drives the crusher to rotate is connected to the main shaft of the crusher, and two driving hydraulic motors drive the large gear through small gears respectively, thereby driving the crusher to rotate.

5. The metallurgical slag crusher according to claim 3, characterized in that: Two driving hydraulic motors and pinion gears are installed on a support frame, which is connected to the crusher main shaft through bearings, thereby ensuring the parallelism between the pinion gear and the large gear axis.

6. The metallurgical slag crusher according to claim 1, characterized in that: Install 12 steel balls into the annular channel through the holes on the four surfaces of the claw sleeve, then screw a hexagon socket screw into each of the four holes to lock the steel balls in the annular channel, and then use plugs to plug the four holes to prevent the screws from contacting the hot slag.

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