Squirrel-cage crusher

Abstract

The utility model belongs to the technical field of crushers, and discloses a squirrel-cage crusher which comprises a rack and a crushing device arranged on the rack, a screen is arranged in the crushing device, the screen is of an annular structure, and the screen is connected with a driving assembly used for driving the screen to rotate in the circumferential direction. The crushing device comprises a crushing chamber and a rolling disc, the rolling disc is arranged in the crushing chamber and rotationally connected with the crushing chamber, the rolling disc is connected with a motor used for driving the rolling disc to rotate, the rolling disc is fixedly connected with a crushing shaft, and a crushing tool bit is arranged on the crushing shaft; the driving assembly comprises a supporting rod and a sleeve, one end of the supporting rod is fixedly connected with the sleeve, the other end of the supporting rod is fixedly connected with the screen, and the sleeve is coaxially and fixedly connected with the rolling disc. According to the scheme, the annular screen is arranged and connected with the driving assembly to drive the screen to rotate in the circumferential direction, so that different positions of the screen can make contact with materials and the beating stick in turn, and abrasion of the screen is dispersed; the utility model solves the problem that the screen of the existing squirrel-cage crusher is easy to damage.

Description

Technical Field

[0001] This solution belongs to the field of crusher technology, specifically involving a squirrel cage crusher. Background Technology

[0002] Referring to the existing public (announcement) number CN207769969U, the squirrel cage crusher uses mutually rotating impact rods to crush the incoming material. It has the advantages of fine crushing particle size and large crushing ratio, and is widely used in mining, building materials, chemical, feed, food, pharmaceutical, plastics and other industries.

[0003] See the existing publication (announcement) number CN102847585A, which discloses an articulated movable screen frame and its crusher, including a base. The base is equipped with a screen, a screen frame, and a rotating mechanism formed by four hammers evenly distributed on a rotating block. The rotating mechanism is driven by a motor. The screen is located below the rotating mechanism and has a semi-circular structure. The circumference formed by the rotation of the screen and the rotating mechanism is concentric. There is a gap between the top of the hammer and the screen. The screen frame is located below the screen and supports the entire screen. The screen frame is mainly composed of a right screen frame and a left screen frame that are movably connected. Both ends of the screen frame are fixed to the base.

[0004] For example, in the aforementioned crushing devices, the screens of existing cage crushers are typically set as semi-circular screens. Although the rotation direction of the impact rods and the trajectory of the material mean that the other half of the screen does not directly participate in the crushing process, a semi-circular screen can meet the crushing requirements. However, because the screen is subjected to the high-speed rotating impact rods and repeated impacts from the material, it is very prone to wear and damage. Typically, the bottom of the screen (at the discharge port) suffers the most severe wear, while the sides of the semi-circular screen experience less wear, resulting in uneven wear and a shorter screen lifespan. Utility Model Content

[0005] The purpose of this solution is to provide a cage crusher to address the problem of easy damage to the screens in existing cage crushers.

[0006] To achieve the above objectives, this solution provides a cage crusher, including a frame and a crushing device mounted on the frame. The crushing device is equipped with a screen, which is an annular screen, and the screen is connected to a drive assembly for driving the screen to rotate circumferentially.

[0007] The principle of this solution is as follows: by setting an annular screen in the crushing device of the cage crusher and connecting it to a drive assembly to drive the screen to rotate circumferentially, different positions of the screen will take turns contacting the material and the impact rod, avoiding the same position from bearing the impact force for a long time, thereby dispersing the wear of the screen.

[0008] The advantages of this solution are: (1) By setting an annular screen in the crushing device of the cage crusher and connecting it to the drive assembly to drive the screen to rotate circumferentially, different positions of the screen will take turns contacting the material and the impact rod, avoiding the same position from bearing the impact force for a long time, thereby effectively dispersing the wear of the screen, extending the service life of the screen, and reducing the frequency of screen replacement. (2) By driving the annular screen to rotate circumferentially, the material moves continuously on the screen surface, thereby avoiding the local accumulation of material on the screen and reducing screen hole blockage. At the same time, the rotation of the screen uses centrifugal force to make it easier for fine particles to pass through the screen holes, while larger particles are blocked by the screen and continue to move, ultimately achieving material screening.

[0009] Furthermore, the crushing device includes a crushing chamber and a roller disc. The roller disc is disposed in the crushing chamber and rotatably connected to the crushing chamber. The roller disc is connected to a motor for driving the roller disc to rotate. The roller disc is fixedly connected to a crushing shaft, and the crushing shaft is provided with crushing cutter heads.

[0010] The principle and effect of this solution are as follows: by setting up a crushing chamber and a roller disc, and rotating the roller disc to the crushing chamber, the roller disc is driven by a motor and fixedly connected to the crushing shaft. The crushing shaft is equipped with crushing cutters, so that the material comes into contact with the high-speed rotating crushing cutters in the crushing chamber, and the material is crushed by the impact, shearing and grinding action of the cutters.

[0011] Furthermore, there are multiple crushing shafts, and all of them are arranged in a circle around the center of the roller; there are multiple crushing cutters, and adjacent crushing cutters are spaced apart.

[0012] The principle and effect of this solution are as follows: multiple crushing shafts are set up and arranged in a circle around the center of the disc, and multiple crushing cutters are set at intervals on the crushing shafts, so that the material can be subjected to impact and shearing in multiple directions during the crushing process, thereby improving the crushing efficiency.

[0013] Furthermore, the feed inlet of the crushing device is located on the side wall of the crushing chamber, and the feed inlet is equipped with a feed hopper.

[0014] The principle and effect of this solution are as follows: Since the screen is a ring-shaped screen, the feed inlet needs to be set on the side wall of the crushing chamber so that the material enters the screen from the side.

[0015] Furthermore, the discharge port of the crushing device is located at the bottom of the crushing chamber and is located outside the screen, and the discharge port is equipped with a discharge hopper.

[0016] The principle and effect of this solution are as follows: Since the screen is a ring structure and the crushed material needs to be screened through the screen, the discharge port is set on the outside of the screen, and the screened material is discharged to the crusher through the discharge hopper.

[0017] Furthermore, the motor is connected to the drive roller via a belt.

[0018] The principle and effect of this solution are as follows: by connecting the motor and the roller through belt drive, the impact and vibration between the motor and the roller are buffered, and mechanical wear during the transmission process is reduced.

[0019] Furthermore, the drive assembly includes a support rod and a sleeve, one end of the support rod is fixedly connected to the sleeve, and the other end is fixedly connected to the screen, and the sleeve is coaxially fixedly connected to the roller.

[0020] The principle and effect of this solution are as follows: the motor drives the roller to rotate, which in turn drives the sleeve to rotate, thereby driving the screen to rotate.

[0021] Furthermore, the support rod is a magnetic support rod, and a discharge plate is slidably provided inside the feed hopper, with a permanent magnet having the opposite magnetic properties to the support rod inside the discharge plate.

[0022] The principle and effect of this solution are as follows: Material tends to accumulate at the feed inlet of the crusher, causing it to get stuck. When material enters the feed inlet, the support rod drives the screen to rotate as it passes the discharge plate. The magnetic properties of the support rod and the discharge plate are opposite, attracting the discharge plate to move towards the support rod. This movement of the discharge plate causes the material to vibrate, thus loosening and causing the material accumulated at the feed inlet to fall, preventing it from getting stuck.

[0023] Furthermore, the unloading plate is connected to a return spring, and the free end of the return spring is fixedly connected to the feed hopper.

[0024] The principle and effect of this solution are as follows: by setting a reset spring between the unloading plate and the feed hopper, the reset spring drives the unloading plate to reset after the support rod rotates past the unloading plate, thereby generating vibration through reciprocating motion.

[0025] Furthermore, the feed hopper is provided with a chute, and the discharge plate is slidably connected to the chute.

[0026] The principle and effect of this solution are as follows: the chute is used to provide positioning and guidance for the movement of the unloading plate, so as to prevent it from dislodging. Attached Figure Description

[0027] Figure 1 This is a front view of a cage crusher according to the present invention;

[0028] Figure 2 This is a top view of a cage crusher according to the present invention;

[0029] Figure 3 This is a side view of a cage crusher according to the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the crushing chamber of this utility model. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the internal structure of the crushing chamber of this utility model. Figure 2 ;

[0032] Figure 6 This is a front view of the drive component of this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the discharge hopper and unloading plate of this utility model.

[0034] The corresponding labels in the attached diagram are: frame 1, crushing device 2, crushing chamber 21, roller 22, motor 23, crushing shaft 24, crushing cutter head 25, feed inlet 26, feed hopper 27, discharge hopper 28, discharge plate 29, screen 3, drive assembly 4, support rod 41, sleeve 42. Detailed Implementation

[0035] The following will describe the concept and technical effects of this utility model clearly and completely with reference to the embodiments, so as to fully understand the purpose, features and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model.

[0036] Example:

[0037] Please see Figures 1-4 A cage crusher includes a frame 1 and a crushing device 2 mounted on the frame 1. The crushing device 2 includes a crushing chamber 21 and a roller disc 22. The crushing chamber 21 includes upper and lower shells. The roller disc 22 is located inside the crushing chamber 21 and rotatably connected to it. The roller disc 22 is connected to a motor 23 via a fixed rotor assembly, a moving rotor assembly, a main shaft, and a belt. Multiple crushing shafts 24 are fixedly connected to the roller disc 22, and these shafts are arranged circumferentially around the center of the roller disc 22. Multiple crushing cutters 25 are mounted on each crushing shaft 24, with adjacent cutters spaced apart. Through this arrangement, the motor 23 drives the roller disc 22 to rotate via the belt, which in turn drives the crushing cutters 25 to rotate. This causes the material entering the crushing chamber 21 to come into contact with the high-speed rotating crushing cutters 25, resulting in the material being crushed through the impact, shearing, and grinding action of the cutters.

[0038] Please see Figure 5 The crushing device 2 is equipped with a screen 3, which is an annular structure with hollow sides. The screen 3 is connected to a drive assembly 4 for driving the screen 3 to rotate circumferentially. The drive assembly 4 includes a support rod 41 and a sleeve 42. One end of the support rod 41 is fixedly connected to the sleeve 42, and the other end is fixedly connected to the screen 3. The sleeve 42 is coaxially fixedly connected to the roller 22. The motor 23 drives the roller 22 to rotate, which in turn drives the sleeve 42 to rotate, thereby driving the screen 3 to rotate. The feed inlet 26 of the crushing device 2 is located on the side wall of the crushing chamber 21. The feed inlet 26 is equipped with a feed hopper 27. Since the screen 3 is a ring-shaped screen 3, the feed inlet 26 needs to be located on the side wall of the crushing chamber 21 so that the material enters the screen 3 from the side. The discharge outlet of the crushing device 2 is located at the bottom of the crushing chamber 21 and is located on the outside of the screen 3. The discharge outlet is equipped with a discharge hopper 28. Since the screen 3 is a ring-shaped structure and the crushed material needs to be screened by the screen 3, the discharge outlet is located on the outside of the screen 3. The screened material is discharged to the crusher through the discharge hopper.

[0039] Please see Figure 6 and Figure 7 The support rod 41 is a magnetic support rod 41. The feed hopper 27 is provided with a chute (not shown in the figure). The chute is set along the direction of the feed inlet 26. The discharge plate 29 is slidably connected to the chute. The chute is used to provide positioning and guidance for the movement of the discharge plate 29. The discharge plate 29 is provided with a permanent magnet with the opposite magnetic properties to the support rod 41. The bottom of the discharge plate 29 is connected to a return spring (not shown in the figure). The free end of the return spring is fixedly connected to the feed hopper 27. The return spring is used to drive the discharge plate 29 to return to the initial state.

[0040] Specific working principle: When the material enters the feed inlet 26, as the support rod 41 drives the screen 3 to rotate and pass the discharge plate 29, the magnetic properties of the support rod 41 and the discharge plate 29 are opposite, which will attract the discharge plate 29 to move in the direction of the support rod 41. The movement of the discharge plate 29 drives the material to vibrate, thereby loosening the material accumulated in the feed inlet 26 and causing it to fall, thus preventing the material from getting stuck in the feed inlet 26. After the support rod 41 rotates past the discharge plate 29, the return spring drives the discharge plate 29 to return to its original position, thereby generating vibration discharge through reciprocating motion.

[0041] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A cage crusher, comprising a frame (1) and a crushing device (2) mounted on the frame (1), wherein the crushing device (2) is provided with a screen (3), characterized in that, The screen (3) is a ring-shaped screen (3), and the screen (3) is connected to a drive assembly (4) for driving the screen (3) to rotate circumferentially.

2. The cage crusher according to claim 1, characterized in that: The crushing device (2) includes a crushing chamber (21) and a roller (22). The roller (22) is located inside the crushing chamber (21) and is rotatably connected to the crushing chamber (21). The roller (22) is connected to a motor (23) for driving the roller (22) to rotate. The roller (22) is fixedly connected to a crushing shaft (24), and a crushing cutter head (25) is provided on the crushing shaft (24).

3. A cage crusher according to claim 2, characterized in that: The number of the crushing shafts (24) is multiple, and the multiple crushing shafts (24) are arranged in a circle around the center of the roller (22); the number of the crushing cutters (25) is multiple, and the adjacent crushing cutters (25) are spaced apart.

4. A cage crusher according to claim 3, characterized in that: The feed inlet (26) of the crushing device (2) is located on the side wall of the crushing chamber (21), and the feed inlet (26) is provided with a feed hopper (27).

5. A cage crusher according to claim 3, characterized in that: The discharge port of the crushing device (2) is located at the bottom of the crushing chamber and is located outside the screen (3). The discharge port is equipped with a discharge hopper (28).

6. A cage crusher according to claim 3, characterized in that: The motor (23) is connected to the drive roller (22) via a belt.

7. A cage crusher according to claim 4, characterized in that: The drive assembly (4) includes a support rod (41) and a sleeve (42). One end of the support rod (41) is fixedly connected to the sleeve (42), and the other end is fixedly connected to the screen (3). The sleeve (42) is coaxially fixedly connected to the roller (22).

8. A cage crusher according to claim 7, characterized in that: The support rod (41) is a magnetic support rod (41), and a discharge plate (29) is slidably provided in the feed hopper (27). The discharge plate (29) contains a permanent magnet with the opposite magnetism to that of the support rod (41).

9. A cage crusher according to claim 8, characterized in that: The unloading plate (29) is connected to a return spring, and the free end of the return spring is fixedly connected to the feed hopper (27).

10. A cage crusher according to claim 8, characterized in that: The feed hopper (27) is provided with a chute, and the unloading plate (29) is slidably connected to the chute.

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