Energy-saving vertical grinding machine for dry grinding and sizing

Abstract

The application provides an energy-saving vertical grinding machine for dry grinding and shaping, which comprises a vertically arranged shell, an inspection door, a rotating shaft, a spiral rotor and a driving device, an opening is arranged on the side wall of the shell, the inspection door is arranged at the opening and forms a closed cavity with the shell, a first lining plate and a second lining plate are respectively arranged on the inner side wall of the shell and the inner side wall of the inspection door, the first lining plate and the second lining plate form a grinding cavity, the rotating shaft and the spiral rotor are arranged in the grinding cavity, the spiral rotor is arranged on the rotating shaft, the driving device is arranged above the shell, the output end of the driving device is fixedly connected with the upper end of the rotating shaft, the grinding cavity is filled with grinding medium, a feeding port and a dust collecting port which are communicated with the grinding cavity are arranged on the upper end or the upper end face of the side wall of the shell, a discharging port which is communicated with the grinding cavity is arranged on the lower end or the lower end face of the side wall of the shell, and a blast port which is communicated with the grinding cavity is arranged on the lower end face of the shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vertical grinding machine, in particular to an energy-saving vertical grinding machine for dry grinding and shaping. BACKGROUND

[0002] Industrial grinding machine is a traditional industrial basic equipment, which is widely used in mining, power, steel, cement, ceramic and other industries, with large quantity, wide range, large equipment and large energy consumption. Since the Danish Smith Company produced cement pipe grinding machine in 1882, there has been no fundamental improvement in industrial pipe grinding machine. The industrial pipe grinding machine used by the traditional industry has low efficiency, and the energy utilization rate is only 95% of the electric energy is converted into waste heat and noise.

[0003] The process equipment for grinding cement and other dry powders, whether it is a roller press (roller vertical mill) combined with a pipe grinding machine or a roller mill system, has defects, including high investment, low operation rate, high operating cost, high power consumption, high noise, serious heavy metal pollution of the product, and poor particle morphology (sphericity, aspect ratio) of the cement product, which affects the working performance, density and durability of the final concrete product, and is a worldwide problem.

[0004] Therefore, a new grinding and shaping equipment (vertical grinding machine) is needed to realize an energy-saving, high-operation-rate, low-noise, low-operating-cost, high-quality (particle morphology) and low-investment environmentally friendly technology, which cannot be realized by other grinding equipment (system).

[0005] Therefore, the present application is designed to solve the above problems. SUMMARY

[0006] In order to solve the above problems, the technical scheme of the present application is as follows:

[0007] An energy-saving vertical grinding machine for dry grinding and shaping, comprising a vertically arranged shell, an access door, a rotating shaft, a spiral rotor and a driving device, the shell side wall is provided with an opening, the access door is arranged at the opening, and forms a closed cavity with the shell, the inner side wall of the shell and the inner side wall of the access door are respectively provided with a first lining plate and a second lining plate, the first lining plate and the second lining plate form a grinding cavity, the rotating shaft and the spiral rotor are arranged in the grinding cavity, and the spiral rotor is arranged on the rotating shaft, the driving device is arranged above the shell, and the output end is fixedly connected with the upper end of the rotating shaft; the grinding cavity is filled with grinding medium;

[0008] The upper end or upper end face of the shell side wall is provided with a feeding port and a dust collecting port which are communicated with the grinding cavity, and the lower end or lower end face of the shell side wall is provided with a discharging port which is communicated with the grinding cavity, and the lower end face of the shell is provided with a blast port which is communicated with the grinding cavity.

[0009] Further, the discharging port is provided with a discharging grate.

[0010] Further, the blast port is provided with a sieve plate.

[0011] Further, the first lining plate and the second lining plate are made of corundum material; the spiral rotor is provided with a spiral lining plate which is made of corundum material; and the grinding medium is made of corundum material which is a non-metallic material, so that the heavy metal content of the ground product can be avoided to exceed the standard.

[0012] Further, the feeding port is connected with a metering conveying device, and the discharging port is connected with a discharging control device.

[0013] Further, the discharging control device comprises a spiral gate, a pneumatic gate, an electric flow valve and a metering device.

[0014] Further, the vertical grinding machine further comprises a dust collector and a blast device.

[0015] Further, the dust collecting port is connected with the dust collector through a dust collecting pipeline, and the blast device is connected with the blast port through a blast pipeline.

[0016] Further, the vertical grinding machine further comprises a foundation, and the shell is arranged on the foundation.

[0017] Further, the foundation is in a cylindrical shape and is hollow, and the foundation is further provided with an inspection opening.

[0018] Further, the discharging grate is provided with a plurality of horizontally arranged equal-interval horizontal gaps, and the horizontal gaps are between 2-6 mm.

[0019] The vertical grinder of the present application is used for dry grinding and shaping of powder such as cement or particles such as machine-made sand, by arranging a feeding port on the upper end or upper end face of the side wall of the shell, arranging a discharging port on the lower end or lower end face of the side wall, realizing feeding of the material to be ground from the upper end and discharging from the lower end, arranging an air inlet on the lower end face of the shell to facilitate air blowing, and effectively discharging the dust and heat generated during grinding, while ensuring smoother discharging of the material. Furthermore, the driving device drives the spiral rotor to rotate, thereby driving the grinding medium in the grinding cavity to rotate and lift, which can improve the grinding efficiency and reduce energy consumption. Therefore, the vertical grinder of the present application can realize: 1. low investment; 2. high operation rate; 3. low operation cost, low daily consumption, and simple equipment maintenance; 4. saving of electricity consumption; 5. low noise, improving the working environment; 6. significant reduction of heavy metal content in the product; 7. significant improvement of the particle morphology of the product, and finally good working performance, high density, and long durability of the concrete product. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0021] Wherein:

[0022] Figure 1 is a structural diagram of the vertical grinder of the present application Figure 1 ;

[0023] Figure 2 is a structural diagram of the vertical grinder of the present application Figure 2 ;

[0024] Figure 3 is a schematic diagram of the interior of the shell of the present application

[0025] Figure 4 is a sectional view of the shell of the present application

[0026] Figure 5 is a partial sectional view of the vertical grinder of the present application

[0027] Figure 6 is a schematic diagram of the installation of the vertical grinder of the present application

[0028] Explanation of reference numerals:

[0029] 10 - housing, 11 - first liner, 12 - feed inlet, 13 - discharge outlet, 20 - access door, 21 - second liner, 30 - rotating shaft, 40 - screw rotor, 41 - screw liner, 50 - drive device, 60 - discharge grate, 61 - horizontal gap, 70 - sieve plate, 80 - base, 81 - access opening, 90 - air blowing duct, 91 - air blowing device, 100 - dust collection duct, 110 - metering conveyor, 120 - discharge control device. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects of the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0031] Please refer to Figures 1 to 6 , which is an energy-saving vertical grinding machine for dry grinding and shaping as the best embodiment of the present application, comprising a vertically arranged housing 10, an access door 20, a rotating shaft 30, a screw rotor 40 and a drive device 50. The housing 10 is provided with an opening in the side wall, the access door 20 is arranged at the opening and forms a closed cavity with the housing 10. The inner side wall of the housing 10 and the inner side wall of the access door 20 are respectively provided with a first liner 11 and a second liner 21, which form a grinding cavity. The rotating shaft 30 and the screw rotor 40 are arranged in the grinding cavity, and the screw rotor 40 is arranged on the rotating shaft 30. The drive device 50 is arranged above the housing 10, and its output end is fixedly connected with the upper end of the rotating shaft 30. The grinding cavity of the housing 10 is filled with grinding medium, wherein the grinding medium is spherical body, and the grinding medium is made of corundum material.

[0032] The upper end or upper end face of the side wall of the housing 10 is provided with a feed inlet 12 and a dust collection port communicated with the grinding cavity, and the lower end or lower end face of the side wall is provided with a discharge outlet 13 communicated with the grinding cavity. The lower end face of the housing 10 is provided with an air blowing port communicated with the grinding cavity.

[0033] A discharge grate 60 is arranged at the discharge outlet 13, and the discharge grate 60 is provided with a plurality of horizontally arranged equal-interval horizontal gaps 61, and the horizontal gap 61 is between 2-6 mm. The discharge grate 60 realizes rapid discharge of the ground material and prevents the discharge of the grinding medium. A sieve plate 70 is arranged at the air blowing port, which prevents the discharge of the ground material and the grinding medium, and facilitates air blowing.

[0034] The first liner 11 and the second liner 21 are made of corundum material; the screw liner 41 is arranged on the screw rotor 40 and is made of corundum material; the grinding medium, the first liner 11, the second liner 21 and the screw liner 41 of the vertical grinding machine are all made of corundum material, wherein the corundum material is a non-metallic material, which can avoid the heavy metal content of the ground product exceeding the standard.

[0035] The feeding port 12 is connected with the metering conveying device 110; the discharging port 13 is connected with the discharging control device 120; the discharging control device 120 comprises a screw gate, a pneumatic gate, an electric flow valve and a metering device, and the screw gate is manually opened for maintenance.

[0036] The vertical grinder further comprises a dust collector and a blowing device 91; specifically, the dust collecting port is connected with the dust collector through a dust collecting pipeline 100, so that the dust and heat generated in the grinding cavity during the grinding process can be treated through the dust collector, meeting the environmental protection requirements; the blowing device 91 is connected with the blowing port through a blowing pipeline 90, and gas is introduced during the grinding process, so that the dust in the grinding cavity and the generated heat can be timely and effectively discharged, and meanwhile, the material discharging is more smooth, improving the grinding efficiency.

[0037] The vertical grinder further comprises a foundation 80, and the shell 10 is arranged on the foundation 80; the foundation 80 is in a cylindrical shape and hollow inside; the foundation 80 is further provided with a maintenance port 81, facilitating maintenance; meanwhile, a through hole for discharging the grinding medium is arranged on the lower end surface of the shell 10, facilitating the discharge and replacement of the grinding medium.

[0038] In summary, the vertical grinder of the present application is used for dry grinding and shaping of cement and other powders or machine-made sand and other particles; the feeding port is arranged on the upper end or upper end surface of the shell side wall, the discharging port is arranged on the lower end or lower end surface of the shell side wall, the material to be ground is fed from the upper end and discharged from the lower end, the blowing port is arranged on the lower end surface of the shell to facilitate the introduction of air, the dust and heat generated during the grinding process can be timely and effectively discharged, and meanwhile, the material discharging is more smooth; furthermore, the driving device drives the screw rotor to rotate, thereby driving the grinding medium in the grinding cavity to rotate and lift, improving the grinding efficiency and reducing the energy consumption; therefore, the vertical grinder of the present application can realize the following: 1. low investment; 2. high operation rate; 3. low operation cost, low daily consumption and simple equipment maintenance; 4. saving of electric energy consumption; 5. low noise and improvement of working environment; 6. substantial reduction of the heavy metal content of the product; 7. substantial improvement of the particle morphology of the product; and finally, the working performance of the concrete product is good, the compactness is high and the durability is long.

[0039] The present application is described above by way of example in connection with the drawings; obviously, the specific implementation of the present application is not limited to the above-mentioned manner, and various non-essential improvements or direct application of the concept and technical solution of the present application to other occasions without improvement are all within the protection scope of the present application.

Claims

1. An energy-saving vertical grinding machine for dry grinding and shaping, characterized in that, This vertical grinding mill, used for dry grinding and shaping of cement powder or manufactured sand particles, includes a vertically arranged shell, an inspection door, a rotating shaft, a helical rotor, and a drive device. The shell has an opening on its side wall, and the inspection door is located at the opening, forming a sealed cavity with the shell. A first liner and a second liner are respectively installed on the inner side wall of the shell and the inner side wall of the inspection door, forming a grinding chamber. The rotating shaft and the helical rotor are located within the grinding chamber, with the helical rotor mounted on the rotating shaft. The drive device is located above the shell, and its output end is fixedly connected to the upper end of the rotating shaft. The grinding chamber is filled with grinding media. The upper end or upper surface of the side wall of the housing is provided with a feed inlet and a dust collection inlet communicating with the grinding chamber, the lower end or lower surface of the side wall is provided with a discharge port communicating with the grinding chamber, the lower surface of the housing is provided with a blower port communicating with the grinding chamber, a discharge grate is provided at the discharge port, and the discharge grate is provided with several horizontal gaps arranged side by side at equal intervals, the horizontal gaps being between 2-6mm; Both the first and second liners are made of corundum; a spiral liner is provided on the spiral rotor, and the spiral liner is made of corundum; the grinding media is made of corundum. The vertical grinder also includes a dust collector. The dust collection port is connected to the dust collector through a dust collection pipe to facilitate the processing of dust and heat generated in the grinding chamber during the grinding process.

2. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 1, characterized in that, A sieve plate is installed at the air inlet.

3. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 1, characterized in that, The feed inlet is connected to a metering and conveying device; the discharge port is connected to a discharge control device.

4. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 3, characterized in that, The unloading control device includes a spiral gate, a pneumatic gate, an electric flow valve, and a metering device.

5. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 1, characterized in that, The vertical grinding machine also includes a blower.

6. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 5, characterized in that, The blower is connected to the blower outlet via a blower pipe.

7. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 1, characterized in that, The vertical grinding machine also includes a foundation, on which the housing is disposed.

8. The energy-saving vertical grinding machine for dry grinding and shaping according to claim 7, characterized in that, The foundation is cylindrical and hollow inside, and it is also equipped with an inspection port.

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