Iron ore crushing and grinding device

Abstract

The utility model provides an iron ore crushing and grinding device, and relates to the technical field of iron ore processing. The iron ore crushing and grinding device comprises a hopper, two friction sleeves are rotationally connected to the middle of the bottom end of the hopper, protective rings are fixedly installed on the two sides of each friction sleeve, a square hole is formed in the middle of each friction sleeve, a square shaft is slidably connected into each square hole, and a shell is fixedly installed on the outer surface of the hopper. According to the iron ore crushing and grinding device, iron ore fragments are placed in the hopper, the iron ore fragments make contact with a friction sleeve all the time through extrusion of a pressing block, a power source drives a square shaft to rotate, the friction sleeve can be driven to rotate, and therefore friction between the iron ore fragments and the friction sleeve can be achieved; therefore, the friction sleeve can horizontally and alternately slide, the efficiency of generating powder through friction can be improved, and the problem that the crushing granularity of iron ore fragments is large in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the field of ore production, in particular to an iron ore crushing and grinding device. Background Art

[0002] Iron ore is a mineral aggregate containing iron elements or iron compounds that can be economically utilized. Natural ore (iron ore) is gradually separated from iron after crushing, grinding, magnetic separation, flotation, gravity separation and other processes. It is an important raw material for steel production enterprises.

[0003] In the process of iron ore processing, the ore is broken into small pieces by a jaw crusher and then crushed into powder suitable for later processing by a ball mill. This method has low cost and perfect mechanism. However, the traditional crushing mechanism cannot meet the grinding requirements because the particle size of the powder is high during the iron ore testing. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an iron ore crushing and grinding device, which solves the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an iron ore crushing and grinding device, including a hopper, two friction sleeves are rotatably connected to the middle of the bottom end of the hopper, and guard rings are fixedly installed on both sides of the friction sleeves. A square hole is opened in the middle of the friction sleeve, and a square shaft is slidably connected inside the square hole. A shell is fixedly installed on the outer surface of the hopper, and the square shaft penetrates the shell and extends to the outside of the shell. The square shaft is rotatably connected to the shell, and a mounting ring is fixedly installed on the inner wall of the shell. A hydraulic telescopic rod is fixedly installed on the side of the mounting ring close to the friction sleeve, and the hydraulic telescopic rod is away from the mounting ring. A rotating ring is fixedly installed at one end of the ring, and rotating grooves adapted to the rotating ring are opened at both ends of the friction sleeve. The rotating ring is rotatably connected to the inside of the rotating groove. Connecting blocks are fixedly installed on both sides of the top of the shell, and a top cover is sleeved on the top of the outer surface of the hopper. Edge plates are protruded on both sides of the top cover. The edge plates and the connecting blocks are fixedly connected by bolts. A limiting shaft is slidably connected to the middle part of the top cover. The bottom end of the limiting shaft is located inside the hopper. A pressure block adapted to the friction sleeve is fixedly installed on the bottom end of the limiting shaft, and a baffle is fixedly installed on the top of the limiting shaft. The baffle and the top cover are fixedly connected by a reset spring.

[0006] Preferably, a lifting frame is fixedly mounted on the inner bottom wall of the shell, and the guard ring is rotatably connected above the lifting frame.

[0007] Preferably, a bearing is fixedly mounted on the outer surface of the square shaft located at the housing, and the bearing is snap-fitted to the housing.

[0008] Preferably, a discharge port is provided at the bottom end of the hopper, and the discharge port is located inside the shell and extends to the outside of the shell.

[0009] Preferably, there are multiple hydraulic telescopic rods, which are distributed in a ring array, and the hydraulic telescopic rods on both sides work alternately.

[0010] Preferably, the cross-sectional shape of the discharge port is "J"-shaped, and the inner wall of the discharge port is flush with the inner wall of the hopper.

[0011] The utility model has the following beneficial effects:

[0012] 1. The iron ore crushing and grinding device places the iron ore fragments inside the hopper, and the iron ore fragments are always in contact with the friction sleeve by the extrusion of the pressing block. The square shaft is driven to rotate by the power source to drive the friction sleeve to rotate so that the iron ore fragments and the friction sleeve can rub against each other. At the same time, the hydraulic telescopic rod can move periodically, so that the friction sleeve can slide horizontally alternately, thereby improving the efficiency of generating powder by friction, and solving the problem of large crushing particle size of iron ore fragments in the prior art.

[0013] 2. The iron ore crushing and grinding device has a lifting frame fixedly mounted on the inner bottom wall of the shell, and the guard ring is rotatably connected to the upper part of the lifting frame. Such an arrangement can support the friction sleeve and prevent the friction sleeve from shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection of the housing of the utility model;

[0016] Figure 3 This is a schematic diagram of the friction sleeve connection of the utility model;

[0017] Figure 4 It is a schematic diagram of the top cover connection of the utility model.

[0018] Among them, hopper-1, friction sleeve-2, guard ring-3, square hole-4, square shaft-5, shell-6, mounting ring-7, hydraulic telescopic rod-8, rotating ring-9, rotating groove-10, connecting block-11, top cover-12, edge plate-13, bolt-14, limit shaft-15, pressure block-16, baffle-17, reset spring-18, lifting frame-19, discharge port-20. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The present invention provides an iron ore crushing and grinding device:

[0021] Embodiment 1, as Figure 1-4 As shown, it includes a hopper 1, two friction sleeves 2 are rotatably connected to the middle of the bottom end of the hopper 1, and guard rings 3 are fixedly installed on both sides of the friction sleeve 2. A square hole 4 is opened in the middle of the friction sleeve 2, and a square shaft 5 is slidably connected inside the square hole 4. A shell 6 is fixedly installed on the outer surface of the hopper 1, and the square shaft 5 penetrates the shell 6 and extends to the outside of the shell 6. The square shaft 5 is rotatably connected to the shell 6. A mounting ring 7 is fixedly installed on the inner wall of the shell 6. A hydraulic telescopic rod 8 is fixedly installed on the side of the mounting ring 7 close to the friction sleeve 2, and a rotating ring 9 is fixedly installed on the end of the hydraulic telescopic rod 8 away from the mounting ring 7. Rotating rings 9 are opened at both ends of the friction sleeve 2. The hopper 1 is provided with a rotating groove 10, and the rotating ring 9 is rotatably connected to the inside of the rotating groove 10. Connecting blocks 11 are fixedly installed on both sides of the top of the shell 6. A top cover 12 is sleeved on the top of the outer surface of the hopper 1. The top cover 12 protrudes on both sides to form edge plates 13. The edge plate 13 and the connecting block 11 are fixedly connected by bolts 14. The middle part of the top cover 12 is slidably connected with a limiting shaft 15. The bottom end of the limiting shaft 15 is located inside the hopper 1. A pressing block 16 adapted to the friction sleeve 2 is fixedly installed on the bottom end of the limiting shaft 15. A baffle 17 is fixedly installed on the top of the limiting shaft 15. The baffle 17 and the top cover 12 are fixedly connected by a reset spring 18.

[0022] A support frame 19 is fixedly mounted on the inner bottom wall of the housing 6, and the guard ring 3 is rotatably connected above the support frame 19. Such an arrangement can support the friction sleeve 2 so as to prevent the friction sleeve 2 from shaking.

[0023] A bearing is fixedly mounted on the outer surface of the square shaft 5 located at the housing 6, and the bearing is engaged with the housing 6. Such an arrangement can improve the stability of rotation.

[0024] A discharge port 20 is provided at the bottom end of the hopper 1 , and the discharge port 20 is located inside the outer shell 6 . The discharge port 20 extends to the outside of the outer shell 6 . This arrangement can avoid discharge accumulation.

[0025] There are multiple hydraulic telescopic rods 8, which are distributed in a ring array. The hydraulic telescopic rods 8 on both sides work alternately. Such an arrangement can improve the stability of the movement of the device.

[0026] The cross-sectional shape of the discharge port 20 is a "J" shape, and the inner wall of the discharge port 20 is flush with the inner wall of the hopper 1. This arrangement enables the discharge to be smoother.

[0027] When in use, the iron ore fragments are placed inside the hopper 1, and the iron ore fragments are always in contact with the friction sleeve 2 through the extrusion of the pressing block 16. The square shaft 5 is driven to rotate by the power source to drive the friction sleeve 2 to rotate, thereby rubbing against the iron ore fragments and the friction sleeve 2. At the same time, the hydraulic telescopic rod 8 can move periodically, so that the friction sleeve 2 can slide horizontally alternately, thereby improving the efficiency of generating powder by friction.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An iron ore crushing and grinding device, comprising a hopper (1), characterized in that: Two friction sleeves (2) are rotatably connected to the middle of the bottom end of the hopper (1), and guard rings (3) are fixedly installed on both sides of the friction sleeve (2). A square hole (4) is opened in the middle of the friction sleeve (2), and a square shaft (5) is slidably connected inside the square hole (4). A shell (6) is fixedly installed on the outer surface of the hopper (1), and the square shaft (5) penetrates the shell (6) and extends to the outside of the shell (6). The square shaft (5) is rotatably connected to the shell (6), and a mounting ring (7) is fixedly installed on the inner wall of the shell (6). A hydraulic telescopic rod (8) is fixedly installed on the side of the mounting ring (7) close to the friction sleeve (2), and a rotating ring (9) is fixedly installed on the end of the hydraulic telescopic rod (8) away from the mounting ring (7). Rotating grooves (10) adapted to the rotating ring (9) are opened at both ends of the friction sleeve (2), and the rotating ring (9) is rotatably connected inside the rotating groove (10); Connecting blocks (11) are fixedly mounted on both sides of the top of the shell (6); a top cover (12) is sleeved on the top of the outer surface of the hopper (1); both sides of the top cover (12) protrude to form edge plates (13); the edge plates (13) and the connecting blocks (11) are fixedly connected by bolts (14); a limiting shaft (15) is slidably connected to the middle of the top cover (12); the bottom end of the limiting shaft (15) is located inside the hopper (1); a pressing block (16) adapted to the friction sleeve (2) is fixedly mounted on the bottom end of the limiting shaft (15); a baffle (17) is fixedly mounted on the top of the limiting shaft (15); the baffle (17) and the top cover (12) are fixedly connected by a return spring (18).

2. The iron ore crushing and grinding device according to claim 1, characterized in that: A lifting frame (19) is fixedly mounted on the inner bottom wall of the outer shell (6), and the guard ring (3) is rotatably connected above the lifting frame (19).

3. The iron ore crushing and grinding device according to claim 1, characterized in that: A bearing is fixedly mounted on the outer surface of the square shaft (5) located at the housing (6), and the bearing is snap-fitted to the housing (6).

4. The iron ore crushing and grinding device according to claim 1, characterized in that: The bottom end of the hopper (1) is provided with a discharge port (20), and the discharge port (20) is located inside the outer shell (6). The discharge port (20) extends to the outside of the outer shell (6).

5. The iron ore crushing and grinding device according to claim 1, characterized in that: The number of the hydraulic telescopic rods (8) is multiple, and the multiple hydraulic telescopic rods (8) are distributed in a ring array, and the hydraulic telescopic rods (8) on both sides work alternately.

6. The iron ore crushing and grinding device according to claim 4, characterized in that: The cross-sectional shape of the discharge port (20) is a "J" shape, and the inner wall of the discharge port (20) is flush with the inner wall of the hopper (1).

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