Anti-impact vertical shaft type crusher

Abstract

The utility model discloses an anti-impact vertical shaft type crusher which comprises a rack, a crushing cavity is mounted at the top of the rack, the upper end of the crushing cavity is sealed by a liftable upper cover, a closed rotor and a conical stone groove are arranged in the crushing cavity, an annular baffle is arranged on the periphery of the closed rotor, the upper end of the annular baffle is fixed on the bottom surface of the upper cover, and when the upper cover is closed, the conical stone groove is fixed on the upper cover. And the lower end of the annular baffle plate extends below the rotor top plate and is not contacted with the rotor top plate. The rotor is high in impact resistance and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of sand making equipment, in particular to an impact-resistant vertical shaft crusher. Background Art

[0002] Vertical shaft crusher, also known as vertical shaft impact sand making machine, is a new generation of sand making equipment. Compared with previous hammer crushers, double roller crushers and other equipment, it has the characteristics of high sand output rate and good finished product particle shape. It is widely used in sand and gravel, mineral processing, cement and other industries.

[0003] See also Figure 1 The existing crusher includes a frame 1, a crushing chamber installed on the top of the frame 1, an upper cover 3 for closing the crushing chamber, a closed rotor 3 arranged at the center of the crushing chamber through a rotating shaft, a powder plate 4 arranged at the bottom of the rotor feeding chamber, and a conical stone trough 2 arranged on the outer periphery of the rotor and adapted to the rotor. The working principle of the existing crusher is: the material enters the high-speed rotating rotor from the top through the feeding device, and the material is divided into the blade-shaped acceleration zones of the rotor by the material distribution plate, and then accelerated to make the material fly away from the rotor under the centrifugal action and hit the conical inner wall of the conical stone trough 2 on the crushing chamber. At this time, the electrical energy of the shaft motor is converted into the kinetic energy of the material through the rotor, and then converted into crushing energy under the action of impact, the material is naturally broken, and the broken material falls freely from the bottom opening of the crushing chamber.

[0004] The existing crusher has the following problems when used:

[0005] (1) The high-speed moving material will hit the rotor top plate after rebounding through the conical stone trough, causing wear of the rotor top plate. Long-term collision will cause the rotor top plate to wear too quickly, reducing the service life of the rotor.

[0006] (2) During the feeding process, the rapidly falling material collides with the rotor feed port, causing rapid wear of the rotor feed port and reducing the service life of the rotor. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides an impact-resistant vertical shaft crusher.

[0008] The technical solution adopted by the utility model is:

[0009] An impact-resistant vertical shaft crusher comprises a frame, a crushing chamber is installed on the top of the frame, the upper end of the crushing chamber is closed by a liftable upper cover, a closed rotor and a conical stone trough are arranged in the crushing chamber, an annular baffle is arranged on the outer periphery of the closed rotor, the upper end of the annular baffle is fixed to the bottom surface of the upper cover, and when the upper cover is closed, the lower end of the annular baffle extends to the bottom of the rotor top plate and does not contact the rotor top plate.

[0010] Furthermore, the lower end surface of the annular baffle exceeds the lower side surface of the rotor top plate by 10-20 mm.

[0011] Furthermore, a spacing of 1-5 mm is provided between the inner side surface of the annular baffle and the outer side surface of the rotor top plate.

[0012] Furthermore, the inner side surface of the conical stone trough includes a first inclined surface and a second inclined surface, the first inclined surface is located above the second inclined surface, and the slope of the first inclined surface is greater than that of the second inclined surface.

[0013] Furthermore, the included angle between the first inclined surface and the vertical surface is 20-30°, and the included angle between the second inclined surface and the vertical surface is 60-70°.

[0014] Furthermore, the lower end of the first inclined surface extends below the middle of the closed rotor.

[0015] Furthermore, a rotor protection disc is installed at the feed inlet of the closed rotor.

[0016] Furthermore, the rotor guard plate includes a disc part and a cylindrical part, the disc part is connected to the rotor top plate by bolts, and the cylindrical part is inserted into the rotor feed port by 10-20 mm.

[0017] Beneficial effects of the utility model:

[0018] 1. By providing an annular baffle on the outer periphery of the closed rotor, it can effectively prevent the high-speed moving materials from bouncing back through the conical stone trough and hitting the rotor top plate, causing wear of the rotor top plate. When the annular baffle is worn, it can be replaced in time by lifting the upper cover, thereby protecting the rotor and extending the service life of the rotor.

[0019] 2. By installing a rotor guard at the feed port of the closed rotor, it can effectively prevent gravel from hitting the feed port during rapid material falling, thereby increasing the service life of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an existing vertical shaft crusher.

[0021] Figure 2 This is a schematic structural diagram of the impact-resistant vertical shaft crusher of this application. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0023] See also Figure 2An impact-resistant vertical shaft crusher includes a frame 1, a crushing chamber is installed on the top of the frame 1, the upper end of the crushing chamber is closed by a liftable upper cover 5, a closed rotor 3 and a conical stone trough 21 are arranged in the crushing chamber, an annular baffle 6 is arranged on the outer periphery of the closed rotor 3, the upper end of the annular baffle 6 is fixed to the bottom surface of the upper cover 5, and when the upper cover 5 is closed, the lower end of the annular baffle 6 extends to the bottom of the rotor top plate 31 and does not contact the rotor top plate 31.

[0024] In specific implementation, the annular baffle 6 is made of wear-resistant metal material, and its upper end is detachably connected to the upper cover through a flange surface, and the center line of the annular baffle 6 coincides with the center line of the rotor. During use, when the wear is too large, the annular baffle can be replaced by removing the bolts.

[0025] Preferably, the lower end surface of the annular baffle 6 exceeds the lower side surface of the rotor top plate 31 by 10-20 mm. Within this range, the rotor can be rotated and discharged without affecting the material, and the material can be effectively prevented from hitting the rotor top plate. It is further preferred that a gap of 1-5 mm is provided between the inner side surface of the annular baffle 6 and the outer side surface of the rotor top plate 31. If the gap is too small, the rotation of the rotor is affected, and if the gap is too large, gravel may pass through.

[0026] The above measures can effectively prevent high-speed moving materials from bouncing off the conical stone trough and hitting the rotor top plate, causing wear of the rotor top plate.

[0027] See also Figure 1 and Figure 2 In order to reduce the impact on the rotor top plate, another design idea of ​​the present application is to cut the original stone trough 2, and cut the inner side surface including the first inclined surface 211 and the second inclined surface 212 on the inner wall of the stone trough. The first inclined surface 211 is located above the second inclined surface 212, and the angle between the first inclined surface 211 and the second inclined surface is an obtuse angle. Through this technical means, the slope of the first inclined surface can be increased, thereby reducing the amount of material rebounding to the upper part of the rotor and reducing the wear on the rotor top plate.

[0028] Preferably, the angle between the first inclined surface 211 and the vertical surface is 20-30°, the lower end of the first inclined surface 211 extends below the middle of the closed rotor 3, and the angle between the second inclined surface 212 and the vertical surface is 60-70°; the kinetic energy of the material rebounding to the rotor top plate is further reduced.

[0029] In this embodiment, a rotor guard disc 7 is installed at the feed inlet of the closed rotor 3. The rotor guard disc 7 includes a disc portion and a cylindrical portion. The disc portion is provided with a bolt hole connected to the rotor top plate, and the cylindrical portion can be inserted into the rotor feed inlet by 10-20 mm. Within this range, the rotor rotation and discharge can be maintained without affecting the wear at the feed inlet. The rotor guard disc 7 can be made of wear-resistant materials, such as stone, and can be replaced by removing the bolts after wear.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. An impact-resistant vertical shaft crusher, comprising a frame (1), a crushing chamber is installed on the top of the frame (1), the upper end of the crushing chamber is closed by a liftable upper cover (5), a closed rotor (3) and a conical stone trough (21) are arranged in the crushing chamber, and the crushing chamber is characterized in that: An annular baffle (6) is provided on the outer periphery of the closed rotor (3), the upper end of the annular baffle (6) is fixed to the bottom surface of the upper cover (5), and when the upper cover (5) is closed, the lower end of the annular baffle (6) extends to below the rotor top plate (31) and does not contact the rotor top plate (31).

2. The impact-resistant vertical shaft crusher according to claim 1, characterized in that: The lower end surface of the annular baffle (6) exceeds the lower side surface of the rotor top plate (31) by 10-20 mm.

3. The impact-resistant vertical shaft crusher according to claim 1, characterized in that: A spacing of 1-5 mm is provided between the inner side surface of the annular baffle (6) and the outer side surface of the rotor top plate (31).

4. The impact-resistant vertical shaft crusher according to claim 1, characterized in that: The inner side surface of the conical stone trough (21) comprises a first inclined surface (211) and a second inclined surface (212), the first inclined surface (211) is located above the second inclined surface (212), and the slope of the first inclined surface (211) is greater than that of the second inclined surface (212).

5. The impact-resistant vertical shaft crusher according to claim 4, characterized in that: The included angle between the first inclined surface (211) and the vertical surface is 20-30°, and the included angle between the second inclined surface (212) and the vertical surface is 60-70°.

6. The impact-resistant vertical shaft crusher according to claim 4, characterized in that: The lower end of the first inclined surface (211) extends to below the middle of the closed rotor (3).

7. The impact-resistant vertical shaft crusher according to claim 1, characterized in that: A rotor protection disc (7) is installed at the feed inlet of the closed rotor (3).

8. The impact-resistant vertical shaft crusher according to claim 7, characterized in that: The rotor guard disc (7) comprises a disc part and a cylindrical part. The disc part is connected to the rotor top plate (31) by bolts, and the cylindrical part is inserted into the rotor feed port by 10-20 mm.

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