A multifunctional grinding machine

Abstract

The present invention discloses a multifunctional crushing and grinding machine. The crushing and grinding machine comprises a motor, a speed reducer connected to the motor, a grinding disc body connected to the speed reducer, a grinding disc lining plate and a cover plate arranged on the upper side of the grinding disc body, and a plurality of grinding roller devices. An air duct shell is arranged on the lower outer side of the grinding disc body, and a ventilation duct is formed between the air duct shell and the outer side of the grinding disc body. A mill middle shell is arranged on the upper outer side of the grinding disc body. The motor is a variable frequency motor, and an impact crushing plate is fixed on the inner side of the air duct shell. A plurality of crushing hammers are fixed on the outer outer circumference of the grinding disc body. The present invention integrates crushing, grinding and drying in one, and has high grinding efficiency, low energy consumption, wide application range and strong applicability. It uses a variable frequency speed regulating motor, and the speed is adjustable, and there is no need to replace the speed reducer and infrastructure, so it is convenient to replace and saves costs. The crushing and drying functions can be enabled as needed, and the grinding function can also be enabled. It has a large market space and can also reduce the capital risk of investors.

Description

Technical Field

[0001] The invention relates to the field of crushing and grinding machines, in particular to a multifunctional crushing and grinding machine. Background Art

[0002] In today's society, the development of roller mill technology has become mature, and the specifications and types of roller mills are also more diversified. Different types of roller mills have also emerged due to the different grinding materials. As a process equipment, it undertakes the task of grinding and drying materials. The roller mill controls the grinding roller through the hydraulic control rocker arm, giving the grinding roller a certain pressure, so that it forms a grinding structure system with the grinding disc. Because roller mills are generally large and heavy machines, the purchase and replacement of roller mills are both expensive. Therefore, a roller mill that can be used for crushing, grinding, powder selection and drying of various materials will be very popular in the market, and it also provides the possibility of its use in multiple industries. Summary of the invention

[0003] The purpose of the present invention is to provide a multifunctional crushing and grinding machine in view of the shortcomings of the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides a multifunctional crushing mill, including a motor, a reducer connected to the motor, a grinding disc body connected to the reducer, a grinding disc lining and a cover plate arranged on the upper side of the grinding disc body, and a plurality of grinding roller devices, an air duct shell is provided on the lower outer side of the grinding disc body, a ventilation duct is formed between the air duct shell and the outer side of the grinding disc body, a mill middle shell is provided on the upper outer side of the grinding disc body, the motor is a variable frequency motor, an impact crushing plate is fixed on the inner side of the air duct shell, and a plurality of crushing hammers are fixed on the outer outer periphery of the grinding disc body.

[0005] Furthermore, the breaker hammer comprises a body and hard alloy blocks fixed on both sides of the outer end of the body.

[0006] Furthermore, the inner surface of the impact crushing plate is stepped and is bolted to the air duct housing.

[0007] Furthermore, a guide plate is provided above the impact crushing plate.

[0008] Furthermore, the grinding roller device includes a grinding roller and a grinding roller arm inserted through the mill middle shell, the outer end of the grinding roller arm is hinged on the grinding roller base, a hydraulic cylinder is connected to the lower side of the grinding roller arm, and a seal is provided between the grinding roller arm and the mill middle shell.

[0009] Furthermore, the grinding roller is a tire-shaped grinding roller, and the angle between its center line and the surface of the grinding disc is 0 to 15°.

[0010] Furthermore, the seal is a spherical seal.

[0011] Furthermore, a material retaining ring is provided around the upper side of the grinding disc body.

[0012] Furthermore, the surfaces of the grinding disc lining and the grinding roller are both built-up with a wear-resistant layer.

[0013] Furthermore, the breaker hammer is connected to the grinding disc body by bolts, a limiting groove is provided on the lower side of the main body, and a boss matched with the limiting groove is provided on the upper side of the grinding disc body.

[0014] Beneficial effects: 1. It integrates crushing, grinding and drying, with high grinding efficiency, low energy consumption, wide application range and strong applicability.

[0015] 2. Use a variable frequency speed motor with adjustable speed. There is no need to replace the reducer and infrastructure, which makes replacement easy and saves costs.

[0016] 3. The crushing and drying functions can be activated as needed, and the grinding function can also be activated. It has a large market space and can also reduce the financial risks of investors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Is a schematic structural diagram of a multifunctional grinding machine embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle A area;

[0019] Figure 3 is a schematic structural diagram of a breaker hammer according to an embodiment of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the impact crushing plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0022] like Figure 1 and 2As shown, the embodiment of the present invention provides a multifunctional grinding mill, including a motor 1, a reducer 3, a grinding disc body 5, a grinding disc lining plate 6, a cover plate 20 and a plurality of grinding roller devices. Among them, the reducer 3 is preferably connected to the motor 1 through a diaphragm coupling 2, and the grinding disc body 5 is connected to the output shaft of the reducer 4 through a plurality of bolts 4, so that the grinding disc body 5 can rotate together with the output shaft of the reducer 4. The grinding disc lining plate 6 is clamped with the grinding disc body 5 through a pressing block 17, and the pressing block 17 is fixed to the upper side of the grinding disc body 5 through a plurality of bolts 18. The cover plate 20 is fixed to the middle upper side of the grinding disc body 5 through a plurality of bolts, and a protective cover is also provided on the upper side of the cover plate 20. An air duct housing 9 is provided on the outer lower side of the grinding disc body 5, and a ventilation duct 11 is formed between the air duct housing 9 and the outer side of the grinding disc body 5, and a mill middle shell 23 is provided on the outer upper side of the grinding disc body 5. The motor 1 used in the embodiment of the present invention is a variable frequency motor, and the output speed can be adjusted according to different working conditions. An impact crushing plate 7 is fixed to the inner side of the air duct housing 9 at the upper part of the air duct 11 , and a plurality of crushing hammers 12 are fixed to the upper side of the outer periphery of the grinding disc body 5 .

[0023] like Figure 3 As shown, the breaker 12 of the embodiment of the present invention includes a body 121 and a cemented carbide block 122 fixed on both sides of the outer end of the body 121. The cemented carbide block 122 is preferably fixedly connected to the body 121 through a welding area 123. The cemented carbide block 122 can be made of tungsten carbide alloy, YT14 or YT15 alloy. In order to facilitate the fixing of the breaker 12 on the grinding disc body 5, it is preferred to set a fixing hole 124 on the body 121 and fix it to the grinding disc body 5 through a bolt 13. In order to improve the connection stability, it is preferred to set a limit groove 125 on the lower side of the breaker 12, and a boss 51 matching the limit groove is provided on the upper side of the grinding disc body 5.

[0024] like Figure 4 As shown, the inner surface 71 of the impact crushing plate 7 of the embodiment of the present invention is preferably arranged in a step shape, which can reduce wind resistance while ensuring impact resistance. The impact crushing plate 7 is preferably bolted and fixed to the air duct housing 9, and preferably a countersunk hole 72 is provided on the impact crushing plate 7, and a bolt 8 is passed through the countersunk hole 72 for fixing. In order to guide the incoming air, a guide plate 10 is also provided above the impact crushing plate 7.

[0025] The grinding roller device used in the embodiment of the present invention is a single-arm column grinding roller, which includes a grinding roller 16 and an interlaced mill shell 23 arranged on a grinding roller arm 19. The grinding roller 16 preferably adopts a tire-shaped grinding roller, which is installed at the inner end of the grinding roller arm 19. The outer end of the grinding roller arm 19 is hinged on the grinding roller base 22. The lower side of the grinding roller arm 19 is connected to a hydraulic cylinder 24, and the hydraulic cylinder 24 directly applies the working pressure required by the grinding roller 16 to the grinding roller arm 19. A seal 21 is provided between the grinding roller arm 19 and the mill shell 23. In order to ensure the sealing effect, the seal 21 is a spherical seal, that is, the contact surface between the sealing part on the grinding roller arm 19 and the sealing part on the mill shell 23 is spherical, which can achieve multi-directional sealing. The grinding roller 16 preferably adopts a tire-shaped grinding roller, and the angle between the center line of the grinding roller 16 and the upper surface of the grinding disc body 5 is 0 to 15 degrees, which can be adjusted according to different process arrangements and needs. During installation, the angle between the center line of the grinding roller 16 and the upper surface of the grinding disc body 5 can be adjusted by adjusting the height of the grinding roller base 22. A retaining ring 14 is provided around the upper side of the grinding disc body 5, and the retaining ring 14 can be fixed to the upper side of the grinding disc body 5 by a plurality of bolts 15. In order to improve the service life of the grinding disc liner 6 and the grinding roller 16, it is preferred that a wear-resistant layer is welded on the surface of the grinding disc liner 6 and the grinding roller 16.

[0026] Working process:

[0027] When the material particles are brittle and easy to grind, the crushing, scattering, drying and powder selection functions are enabled. This process requires a relatively high rotation speed of the grinding disc, about 120-150r / min, and the linear speed of the breaker 12 can reach 25-30m / s. When the material to be ground is fed into the cover plate 20 and the protective cover on the grinding disc body 5, under the action of centrifugal force, the material is dispersed with the rotating grinding disc body 5 and crushed by the grinding roller 16 and the grinding disc lining 6. At this time, the pressure of the hydraulic cylinder 24 on the grinding roller 16 is relatively small, and it mainly plays a crushing role. The breaker 12 and the counterattack A crushing area is formed between the crushing plates 7. Due to the high rotation speed of the grinding disc body 5, the material thrown out also has a high speed. The high-speed hot air surging from the bottom of the grinding disc body 5 will take away most of the small particles of material and enter the powder classifier for powder selection. When there are large particles of block materials that are not taken away, they will be impacted by the crushing hammer 12 and the impact crushing plate 7 when passing through the crushing space of the crushing hammer 12 and the impact crushing plate 7, and will be crushed into powdery materials, which are then taken away by the hot air, and the fine powder is taken away by the powder classifier, and the coarse powder is returned to be ground again, so as to achieve the effect of material crushing and drying.

[0028] When the material hardness is relatively high, the grinding and powder selection process is activated. Considering the process requirements and structural layout, the breaker 12 is removed first to avoid unnecessary wear. High pressure is applied to the grinding roller 16 through the hydraulic cylinder 24 to grind the material under high pressure. The rotation speed of the grinding disc body 5 also needs to be adjusted to 30-38 r / min. After the material is fed into the cover plate 20 on the grinding disc body 5 and the middle part of the protective sleeve, it is thrown to the periphery under the action of centrifugal force. After being ground by the grinding roller 16 and the grinding disc lining 6, the fine powder is taken away by the powder selector, and the coarse powder is returned to be ground again, so as to achieve the effect of material grinding and powder selection.

[0029] The above is only a preferred embodiment of the present invention. It should be noted that for ordinary technicians in this technical field, other parts not specifically described belong to the prior art or common knowledge. Several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A multifunctional grinding machine, comprising a motor, a reducer connected to the motor, a grinding disc body connected to the reducer, a grinding disc lining plate and a cover plate arranged on the upper side of the grinding disc body, and a plurality of grinding roller devices, an air duct housing is arranged on the lower side of the grinding disc body, a ventilation duct is formed between the air duct housing and the outer side of the grinding disc body, a mill middle shell is arranged on the upper side of the grinding disc body, characterized in that: The motor is a variable frequency motor, an impact crushing plate is fixed inside the air duct housing, and a plurality of crushing hammers are fixed on the upper periphery of the grinding disc body; The breaker hammer comprises a body and hard alloy blocks fixed on both sides of the outer end of the body; The inner surface of the impact crushing plate is stepped and is bolted to the air duct housing.

2. The multifunctional grinding machine according to claim 1, characterized in that: A guide plate is also arranged above the impact crushing plate.

3. The multifunctional crushing and grinding machine according to claim 1, characterized in that: The grinding roller device comprises a grinding roller and a grinding roller arm inserted through the mill shell. The outer end of the grinding roller arm is hinged on the grinding roller base. A hydraulic cylinder is connected to the lower side of the grinding roller arm, and a seal is provided between the grinding roller arm and the mill shell.

4. The multifunctional crushing and grinding machine according to claim 3, characterized in that: The grinding roller is a tire-shaped grinding roller, and the angle between its center line and the surface of the grinding disc is 0 to 15 degrees.

5. The multifunctional crushing and grinding machine according to claim 3, characterized in that: The seal is a spherical seal.

6. The multifunctional crushing and grinding machine according to claim 1, characterized in that: A material retaining ring is arranged around the upper side of the grinding disc body.

7. The multifunctional crushing and grinding machine according to claim 3, characterized in that: The surfaces of the grinding disc lining plate and the grinding roller are both clad with a wear-resistant layer.

8. The multifunctional crushing and grinding machine according to claim 1, characterized in that: The breaker hammer is connected with the grinding disc body by bolts, a limiting groove is arranged on the lower side of the main body, and a boss matched with the limiting groove is arranged on the upper side of the grinding disc body.

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