RU225493U1 - Hammer Crusher - Google Patents

Abstract

The utility model relates to mills with rotating impact elements. The technical result is achieved by the fact that the hammer crusher contains a frame, an electric motor with a horizontal shaft with a power from 30 kW to 75 kW and a shaft rotation speed from 1500 rpm to 3000 rpm, a loading window and a rectangular discharge window, a magnetic column on the loading window , a perforated sieve made of sheet material with a thickness from 2 mm to 3 mm with a hole diameter from 2 mm to 12 mm, a perforation pitch from 3.5 mm to 16 mm, containing a hammer rotor with a diameter from 550 mm to 1110 mm. Thus, the declared utility model, due to the devices and technologies used in it, the combination of their characteristics and relationships, has a positive effect on the final product and ensures an increase in the productivity of the hammer crusher. 7 salary f-ly, 4 ill.

Description

The utility model relates to mills with rotating impact elements.

A honeycomb grinder is known, containing a cylindrical working chamber with a loading neck and a discharge pipe, a vertically located shaft with working blades inside the chamber and an electric drive, characterized in that inside the working chamber with a gap along its cylindrical surface there is an additional chamber in the form of a mesh cylinder, the bottom of which made of lattice, a tray is installed under the additional chamber with an inclination, directed towards the unloading pipe. A permanent magnet is also installed under the unloading pipe. [RU 93302 U1, publ. 04/27/2010].

The disadvantage of this analogue is the installation location of the permanent magnet, namely its location under the discharge pipe, which does not protect the crusher chamber from metal debris entering it, which can damage the elements of the grinder, thereby significantly reducing its productivity.

A rotary-vacuum crusher is also known, which refers to devices for grinding and crushing materials such as grains, legumes, millet seeds, etc., and can be used in agriculture, for example, for the preparation of animal feed, hay, straw, etc. .P. The rotary-vacuum crusher contains a volute housing in which there is a rotor, a starter with thermal protection, a handle, an outlet pipe, an electric motor, a cover, an inlet pipe, wheels, a frame, a removable sieve, fastening bolts, and a stone-metal catcher. In this case, the rotor has a star design with six beams with 4 to 10 blades attached to each beam and is designed to perform two functions simultaneously - the fan function and the chopper function. There is a bushing in the middle of the rotor, which serves to place the rotor directly on the motor shaft. The crusher can use an electric motor with a power of 3 kW and 4 kW to operate from a 220 V or 380 V network. The invention makes it possible to reduce the weight and dimensions of the crusher. [RU 2734327 C1, publ. 10/14/2020].

The disadvantage of this analogue is the undefined design of the sieve, namely the parameters of its perforation, as well as the undefined size of the rotor, which significantly affects the productivity of the crusher, which is not possible to determine without knowing these parameters.

The closest technical solution is described in a hammer crusher, which includes a housing, inside of which a rotor is mounted, consisting of a shaft and two disks mounted on it, an electric motor, characterized in that the housing is mounted on a support and is made detachable, consisting of a base and a cover, on the upper flange The lid contains a loading hopper with removable bumpers, above which a curtain is fixed; axles are inserted into the holes made along the periphery of the rotor disks, on which six rows of hammers and bushings are hinged; on the part of the rotor shaft protruding from the housing, a driven pulley is attached, connected to the driving pulley The electric motor is driven by a V-belt drive, which is covered by a casing; a grille is installed on guides in the lower part of the housing. [RU 162410 U1, publ. 06/10/2016].

The disadvantage of the closest technical solution is the inability to determine the performance of the prototype due to uncertain design parameters, such as electric motor power, screen or rotor parameters.

The technical problem solved by the declared utility model is the elimination of the shortcomings of analogues.

The purpose of a utility model is to increase productivity.

The technical result of the claimed utility model is to increase the productivity of the hammer crusher.

The specified technical result is achieved by the fact that the hammer crusher contains a frame, an electric motor with a horizontal shaft with a power from 30 kW to 75 kW and a shaft rotation speed from 1500 rpm to 3000 rpm, a loading window and a rectangular discharge window, a magnetic column on the loading window, a perforated sieve made of sheet material with a thickness of 2 mm to 3 mm with a hole diameter of 2 mm to 12 mm, a perforation pitch of 3.5 mm to 16 mm, containing a hammer rotor with a diameter of 550 mm to 1110 mm.

In particular, the size of the loading window is made with a width from 200 mm to 420 mm and a length from 290 mm to 342 mm;

In particular, the size of the unloading window is made with a width from 300 mm to 420 mm and a length from 342 mm to 600 mm;

In particular, the perforation of the sieve is made in a checkerboard pattern;

In particular, the electric motor is designed to operate from a 3-phase current network with a voltage of 380 V, a frequency of 50 Hz;

in particular, the rotor hammers are made of steel;

In particular, the number of axes with hammers ranges from 4 to 8;

In particular, the number of hammers ranges from 32 to 72.

The proposed utility model is illustrated with diagrams.

In fig. 1 shows a front view of a hammer crusher with a mounted magnetic column;

In fig. Figure 2 shows a bottom view of a hammer crusher;

In fig. Figure 3 shows a front view of a hammer crusher with the casing cover removed;

In fig. Figure 4 shows a cross section A-A of a hammer crusher.

The figures indicate: 1 - bed, 2 - electric motor, 3 - loading window, 4 - unloading window, 5 - magnetic column, 6 - sieve, 7 - rotor, 8 - hammer.

According to the utility model, the hammer crusher contains a frame 1 necessary for mounting the electric motor 2.

The hammer crusher contains an electric motor 2 with a horizontal shaft (Fig. 1). The horizontal shaft hammer crusher provides increased productivity and crushing power. The power of electric motor 2 is from 30 kW to 75 kW, which ensures a rotational speed of the horizontal shaft from 1500 rpm to 3000 rpm, which significantly increases the productivity of the hammer crusher due to the speed of grinding of raw materials. The power of electric motor 2 is less than 30 kW and the rotation speed of the horizontal shaft is less than 1500 rpm, due to insufficient performance of the hammer crusher, the low speed of grinding raw materials does not allow. Also, a power of electric motor 2 less than 30 kW is not recommended due to the high load on electric motor 2, which will lead to a decrease in the service life of this electric motor 2, and accordingly to its premature failure, which will also significantly affect the decrease in the productivity of the hammer crusher due to equipment downtime during its repair. The design of the electric motor 2 with a power of more than 75 kW and a shaft rotation speed of more than 3000 rpm is not advisable, since with an increase in power and shaft speed above the indicated values, no noticeable increase in productivity is observed, and also the design of the electric motor 2 with high power will lead to an inappropriate increase in the cost of the entire structure without significant performance gains.

The hammer crusher contains a loading window 3 and an unloading window 4 (Fig. 2), made of a rectangular shape. Making these windows rectangular in shape increases the productivity of the entire device by increasing throughput and reducing pressure inside the crusher body.

The size of the loading window 3 is made with a width from 200 mm to 420 mm and a length from 290 mm to 342 mm, and the size of the unloading window 4 is made with a width from 300 mm to 420 mm and a length from 342 mm to 600 mm, which, if necessary, can additionally influence the increase in the throughput of the hammer crusher, and accordingly increase its overall productivity. The dimensions of the loading window 3 and discharge window 4 smaller than those specified in this application are not recommended due to the reduction in the throughput of the hammer crusher, as well as a possible increase in pressure inside the crusher body, which can reduce the overall productivity of the hammer crusher. Making the loading window 3 and unloading window 4 larger than those specified in this application is not advisable due to the lack of a significant increase in throughput, and accordingly the lack of impact on the performance of the entire device.

The hammer crusher contains a magnetic column 5, which is necessary for separating metallomagnetic impurities from moving raw materials under the influence of a magnetic field, which settle on the magnetic block of the magnetic column 5. Also, the magnetic column 5 is mounted on the loading window 3. The presence of a magnetic column 5, and Also, placing it on the loading window 3 improves the quality of the processed raw materials, and also eliminates damage to the hammer crusher elements by metal objects that can get into the hammer crusher body along with the raw materials, which can lead to breakdown of the entire device and significantly reduce the productivity of the hammer crusher during its repair. .

Sieve 6 (Fig. 3) is made of sheet material with a thickness of 2 mm to 3 mm, which reduces the risk of failure of the hammer crusher by increasing its reliability, and thereby reducing the risk of unplanned repairs, which will significantly reduce the overall productivity of the hammer crusher. Making sieve 6 from a sheet less than 2 mm thick is not allowed due to insufficient strength, which can lead to breakdown of sieve 6 and, accordingly, to unplanned repairs of the entire device, which will minimize its productivity during downtime. Making sieve 6 from sheet material with a thickness of more than 3 mm is not recommended, due to the inappropriate increase in cost of the entire structure, without the need to increase the strength of sieve 6.

Sieve 6 contains perforations made in the form of round holes with a diameter from 2 mm to 12 mm and a perforation pitch from 3.5 mm to 16 mm. The design of sieve 6 with specified perforation values significantly increases the throughput of the hammer crusher, thereby significantly increasing its productivity. The design of sieve 6 with holes smaller than 2 mm is not allowed due to insufficient productivity due to the small diameter of the holes of sieve 6. The design of sieve 6 with a hole diameter of more than 12 mm is not recommended due to a decrease in the quality of crushing due to the large fraction of processed raw materials, which can lead to re-crushing it, and accordingly to carrying out double work, which in turn will reduce the productivity of the hammer crusher when processing a unit of raw material. The design of sieve 6 with a perforation pitch of less than 3.5 mm is not recommended due to the insufficient distance between the holes, which can lead to local rupture of sieve 6, and accordingly its breakdown and failure of all equipment, which will significantly reduce the productivity of the hammer crusher during its repair . The design of sieve 6 with a perforation pitch of more than 16 mm is not allowed due to the insufficient throughput of such sieve 6 due to the insufficient number of holes, which in turn will significantly reduce the productivity of the hammer crusher.

The perforation of the sieve 6 is made in a checkerboard pattern, which, if necessary, can further increase the productivity of the hammer crusher due to the additional strength of the sieve 6, due to the fact that when performing perforations in a checkerboard pattern (or with offset rows), constant rigidity is ensured along the entire length of the sieve 6 , which in turn can reduce the risk of violating the integrity of the structure of the sieve 6, and accordingly reduce the risk of its breakdown, which can lead to failure of the entire device, which can lead to a decrease in the productivity of the hammer crusher during its repair.

The hammer crusher contains a rotor 7 (Fig. 4), with a diameter from 550 mm to 1110 mm, which significantly increases the productivity of the device by ensuring an effective crushing process. A rotor diameter 7 of less than 550 mm is not allowed due to insufficient performance required for industrial processing of raw materials. The diameter of the rotor 7 over 1110 mm is not recommended due to the unreasonable increase in the cost of the device, as well as the need to increase the power of the electric motor 2 to drive the rotor 7 with increased mass.

The hammers 8 of the rotor 7 can be made of steel, which, if necessary, can further increase the productivity of the hammer crusher by increasing the service life of the rotor 7 with steel hammers 8, due to the increased resistance of steel to impacts of raw materials.

The number of axes with hammers 8 can be in the range from 4 to 8, and the number of hammers 8 on the axes varies from 32 to 72, which, if necessary, can additionally influence the performance of the hammer crusher due to the speed of crushing raw materials. The design of the rotor 7 with the number of axles less than 4 and the number of hammers 8 less than 32 is not recommended, since it may not effectively crush the raw materials, which may affect the productivity of the hammer crusher. Design of the rotor 7 with more than 8 axles and more than 72 hammers 8 is also not recommended, since such a design of the rotor 7 may not affect the efficiency of crushing, but will affect the cost of manufacturing and maintenance of such a rotor 7.

The hammer crusher is designed to operate from a 3-phase current network with a voltage of 380 V and a frequency of 50 Hz, which, if necessary, can additionally influence the performance of the entire device by ensuring the stability of the power supply and the operability of the electric motor with the declared power.

Thus, the design of the hammer crusher is in the form of a frame 1 with an electric motor 2 with a horizontal shaft and a power from 30 kW to 75 kW, a shaft frequency from 1500 rpm to 3000 rpm, where the loading window 3 and the unloading window 4 are made of a rectangular shape, and a magnetic column 5 is mounted on the loading window 3, where the hammer crusher contains a perforated sieve 6, made of sheet material with a thickness of 2 mm to 3 mm with a hole diameter of 2 mm to 12 mm, perforation pitch from 3.5 mm to 16 mm, and also containing a hammer rotor 7 with a diameter from 550 mm to 1110 mm, the totality of all elements and characteristics ensures increased productivity of the hammer crusher.

Examples of implementation.

First implementation example.

The hammer crusher contains a frame 1 on which an electric motor 2 is mounted, containing a horizontal shaft and made with a power of 30 kW and a shaft rotation speed of 3000 rpm. The loading window 3, on which the magnetic column 5 is mounted, is 200 mm wide and 342 mm long, and the unloading window 4 is 300 mm wide and 342 mm long. Sieve 6 of the hammer crusher is made of sheet material 2 mm thick with a hole diameter of 2 mm and a perforation pitch of 16 mm, made in a checkerboard pattern. The hammer rotor 7 is made with a diameter of 550 mm, where the number of axes with steel hammers 8 is 4, and the number of hammers 8 is 40. In this case, the electric motor 2 of the hammer crusher is connected to a 3-phase current network with a voltage of 380 V, a frequency of 50 Hz.

The hammer crusher described in this example implementation allows for a productivity of 3 t/h.

Second implementation example.

The hammer crusher contains a frame 1, on which an electric motor 2 is mounted, containing a horizontal shaft and made with a power of 55 kW and a shaft rotation speed of 2200 rpm. The loading window 3, on which the magnetic column 5 is mounted, is 300 mm wide and 300 mm long, and the unloading window 4 is 300 mm wide and 600 mm long. Sieve 6 of the hammer crusher is made of sheet material 2.5 mm thick with a hole diameter of 8 mm and a perforation pitch of 8 mm, made in a checkerboard pattern. The hammer rotor 7 is made with a diameter of 850 mm, where the number of axes with steel hammers 8 is 6, and the number of hammers 8 is 54. In this case, the electric motor 2 of the hammer crusher is connected to a 3-phase current network with a voltage of 380 V, a frequency of 50 Hz.

The hammer crusher described in this example implementation allows for a productivity of 6 t/h.

Third implementation example.

The hammer crusher contains a frame 1, on which an electric motor 2 is mounted, containing a horizontal shaft and made with a power of 75 kW and a shaft rotation speed of 3000 rpm. The loading window 3, on which the magnetic column 5 is mounted, is 420 mm wide and 290 mm long, and the unloading window 4 is 420 mm wide and 600 mm long. Sieve 6 of the hammer crusher is made of sheet material 3 mm thick with a hole diameter of 12 mm and a perforation pitch of 3.5 mm, made in a checkerboard pattern. The hammer rotor 7 is made with a diameter of 1110 mm, where the number of axes with steel hammers 8 is 8, and the number of hammers 8 is 72. In this case, the electric motor 2 of the hammer crusher is connected to a 3-phase current network with a voltage of 380 V, a frequency of 50 Hz.

The hammer crusher described in this example implementation allows for a productivity of 10 t/h.

Thus, the declared utility model, due to the devices and technologies used in it, the combination of their characteristics and relationships, has a positive effect on the final product and ensures an increase in the productivity of the hammer crusher.

Claims (8)

1. Hammer crusher containing a frame, an electric motor with a horizontal shaft with a power of 30 kW to 75 kW and a shaft speed of 1500 rpm to 3000 rpm, a loading window and a rectangular discharge window, a magnetic column on the loading window, a perforated sieve , made of sheet material with a thickness from 2 mm to 3 mm with a hole diameter from 2 mm to 12 mm, a perforation pitch from 3.5 mm to 16 mm, a hammer rotor with a diameter from 550 mm to 1110 mm. 2. Hammer crusher according to claim 1, characterized in that the size of the loading window is made with a width from 200 mm to 420 mm and a length from 290 mm to 342 mm. 3. Hammer crusher according to claim 1, characterized in that the size of the discharge window is made with a width from 300 mm to 420 mm and a length from 342 mm to 600 mm. 4. Hammer crusher according to claim 1, characterized in that the perforation of the sieve is made in a checkerboard pattern. 5. Hammer crusher according to claim 1, characterized in that the electric motor is designed to operate from a 3-phase current network with a voltage of 380 V, a frequency of 50 Hz. 6. Hammer crusher according to claim 1, characterized in that the rotor hammers are made of steel. 7. Hammer crusher according to claim 1, characterized in that the number of axes with hammers ranges from 4 to 8. 8. Hammer crusher according to claim 1, characterized in that the number of hammers is in the range from 32 to 72.