CN207493778U - A kind of impact grinder - Google Patents

Abstract

The utility model discloses an impact pulverizer, which comprises a crushing mechanism, a screening mechanism, a machine base and a machine barrel; The mechanism is fixed on the machine base, the screening mechanism is fixed on the barrel, and the screening mechanism is located above the crushing mechanism; the connection between the screening mechanism and the barrel is provided with a discharge port, and the side wall of the barrel is A feed inlet and an air inlet are provided, the feed inlet is located above the crushing mechanism, and the air inlet is set opposite to the side of the crushing mechanism; the crushing mechanism includes a rotor structure and a detachable bushing, the crushing mechanism and the machine barrel An air inlet passage is formed between them, and the detachable sleeve is detachably sleeved outside the rotor structure for changing the volume of the air inlet passage. The utility model has the advantages of various performances and energy saving.

Description

an impact crusher

technical field

The utility model relates to the field of mechanical manufacturing, in particular to an impact pulverizer.

Background technique

Impact crusher, referred to as impact crusher, commonly known as sand making machine, plays an irreplaceable role in various ore crushing equipment, and is currently the most practical and reliable crushing machine.

When the current impact mill performs crushing operations, the fineness of the crushing is uncontrollable, and only preliminary crushing can be carried out, and then manual selection is performed later, which is not only cumbersome but also uncontrollable in output. At the same time, when the impact crusher produces ultra-fine non-metallic ore or chemical raw materials, it consumes a lot of energy. Taking the production of 1000 mesh talcum powder as an example, the power consumption per ton needs to be about 100 degrees. If calculated with an annual output of 100,000 tons, the cost of electricity consumption is very high.

Utility model content

Therefore, it is necessary to provide an energy-saving impact mill to solve the problem that the current impact mill cannot control the fineness of the finished product.

In order to achieve the above object, the inventor provides an impact mill, including a crushing mechanism, a screening mechanism, a machine base and a machine barrel;

The barrel and the machine base are fitted together to form a cavity, the crushing mechanism and the screening mechanism are set in the cavity, the crushing mechanism is fixed on the machine base, the screening mechanism is fixed on the barrel, and the screening mechanism is located above the crushing mechanism;

The connection between the screening mechanism and the barrel is provided with a discharge port, the side wall of the barrel is provided with a feed port and an air inlet, the feed port is located above the crushing mechanism, and the air inlet and The sides of the crushing mechanism are set opposite to each other;

The pulverizing mechanism includes a rotor structure and a detachable shaft sleeve. An air inlet passage is formed between the pulverization mechanism and the machine barrel. The detachable shaft sleeve is detachably sleeved outside the rotor structure for changing the volume of the air inlet passage.

Further, the rotor structure includes a bearing assembly, a main shaft, a hammer plate, a hammer head, and a main shaft driving motor; the base of the bearing assembly is fixed on the machine base, and one end of the main shaft is sleeved in the bearing of the bearing assembly; The hammer plate is a circular hammer plate, and the center of the circular hammer plate is provided with a hole fixedly connected with the other end of the main shaft; there are multiple hammer heads, and the multiple hammer heads are divergently arranged on the circular center with the center of the circle as the center. On the hammer plate; the main shaft driving motor is connected with the main shaft transmission, and is used to drive the main shaft to rotate.

Further, an external spline is provided on the shaft body at the other end of the main shaft, and an internal spline matching the external spline is provided in the hole on the circular hammer plate.

Further, the hammer head is a paddle-type hammer head, and the paddle-type hammer head is divergently arranged on the hammer plate with the center of the circle as the center. The paddle-type hammer head is arranged obliquely to the circumference of the circular hammer plate. The hammer head protrudes to the direction of rotation of the hammer plate.

Further, it also includes a spindle nut cover to prevent the hammer plate from being separated from the main shaft, and the main shaft nut cover fixes the hammer plate on the shaft body of the main shaft.

Further, the spindle driving motor is a synchronous motor or an asynchronous motor.

Further, the screening mechanism includes an external drainage tube, an internal drainage tube, a support rod and a classifier assembly; the outlet of the classifier assembly is connected to the discharge port correspondingly, and the external drainage tube is sleeved on the classifier In the assembly, the inner drainage tube is fixed in the outer drainage tube through the support rod, and the inner drainage tube is located directly below the classifier assembly; a material return channel is formed between the inner drainage tube and the outer drainage tube.

Further, the classifier assembly includes a rotatable screening cylinder, a rotating shaft and a driving motor for the rotating shaft, the opening of the rotatable screening cylinder corresponds to the feed inlet, and the A sieve hole is provided; the rotating shaft is vertically arranged, one end of the rotating shaft is fixedly connected with the bottom of the rotatable screening cylinder, and the other end of the rotating shaft is connected with the driving motor of the rotating shaft through transmission.

Further, the rotating shaft driving motor is a synchronous motor or an asynchronous motor.

Different from the prior art, in the above technical solution, the volume of the air inlet channel is controlled by detachably setting the detachable sleeve on the crushing mechanism, and then the control of the wind speed and pressure is realized, and finally the fineness of the finished product is realized. control. According to the specific needs, the user can remove or install the detachable shaft sleeve, so as to meet the requirements of fineness and output.

Description of drawings

Fig. 1 is the sectional view of the energy-saving type impact mill in the specific embodiment;

Fig. 2 is the top view of the rotor structure in the specific embodiment;

Fig. 3 is a cross-sectional view of a paddle-type hammer head in a specific embodiment.

Explanation of reference signs:

1. Machine base;

2. Outlet;

3. Feed port;

4. Air inlet;

5. Barrel;

6. Bearing assembly;

7. Main shaft;

8. Round hammer plate;

9. Paddle type hammer head; 90. Upper surface; 91. Lower surface;

10. Spindle drive motor;

11. Detachable shaft sleeve;

12. Spindle nut cover;

13. External drainage tube;

14. Internal drainage tube;

15. Support rod;

16. Rotatable screening cylinder;

17. Rotary shaft;

18. Material return channel.

Detailed ways

In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

This embodiment provides an impact pulverizer for pulverizing raw materials into fine powder. The barrel 5 and the machine base 1 of the impact mill are fitted together to form a cavity, the crushing mechanism and the screening mechanism are arranged in the cavity, the crushing mechanism is fixed on the machine base 1, the screening mechanism is fixed on the machine barrel 5, and the sieve The branch mechanism is located directly above the crushing mechanism.

Please refer to Figure 1. In a specific embodiment, the feed port 3 provided on the side wall of the barrel 5 allows the user to transport the raw materials to be pulverized into the impact mill through the feed port 3, and feed the raw materials provided entry. The feed port 3 is located above the crushing mechanism, such arrangement allows the raw material to drop directly on the crushing mechanism when the raw material is conveyed. In order to facilitate transportation, a feeding pipe can be connected to the feeding port, and the nozzle is larger than the pipe body.

There is a discharge port 2 at the connection between the screening mechanism and the machine barrel. The finished product crushed into fine powder is blown to the top of the machine barrel by the wind, and is transported to the outside of the impact crusher through the discharge port and collected at the same time. A cavity for collecting finished products can be sleeved outside the discharge port.

An air inlet 4 is set on the side wall of the machine barrel. After the wind enters from the air inlet, the whole barrel is filled with wind. Sieve out. The air inlet is used to provide an air inlet for devices that provide air such as a blower. In order to improve efficiency, multiple air inlets 4 and multiple blowers corresponding thereto can be provided. The air inlet is set opposite to the side of the crushing mechanism, so that the wind will not be blown directly onto the hammer plate, causing the raw materials to be blown away from the hammer plate. Specifically, after the wind is blocked by the crushing mechanism, the wind blows upwards along the gap between the machine barrel and the crushing mechanism, that is, the air inlet channel, and the wind changes from horizontal to vertical. At this time, the crushed fine powder is blown upwards. After being sieved by the sieving mechanism, the finished fine powder is output from the discharge port.

In a specific embodiment, the crushing mechanism includes a rotor structure and a detachable bushing 11 , and the rotor structure includes a bearing assembly 6 , a main shaft 7 , a hammer plate, a hammer head, and a main shaft driving motor 10 . Wherein, the bearing assembly of the rotor structure includes a bearing seat and a bearing. The base of the bearing seat is fixed on the machine base by bolts, specifically, the bearing seat is fixed on the center of the machine base, and the bearing is interference-fitted in the bearing seat. By arranging the bearing assembly, the frictional force of the rotation of the main shaft can be reduced, and at the same time, the main shaft can be fixed in the vertical direction.

One end of the main shaft 7 of the rotor structure is sleeved in the bearing of the bearing assembly, and the other end is connected with the hammer plate. The main shaft is used to drive the hammer disc to rotate. Specifically, the spindle driving motor 10 drives the spindle to rotate through gear-to-gear meshing, wherein the spindle driving motor can be a synchronous motor or an asynchronous motor. The main shaft drives the hammer plate to rotate, and the hammer plate drives the hammer head to rotate. The rotating hammer head makes the raw materials collide with each other until they are crushed into fine powder products. Such an arrangement can realize that the main shaft drives the cone to rotate.

In a specific embodiment, the hammer plate is a circular hammer plate 8, and a hole fixedly connected with the other end of the main shaft is opened on the center of the hammer plate. In order to make the hammer plate rotate synchronously with the main shaft, an external spline is arranged on the shaft body at the other end of the main shaft, and an internal spline matching the external spline is arranged in the hole on the circular hammer plate, and the internal spline and the external spline key fit. In another embodiment, the other end of the spindle can be directly welded to the hammer plate, or fixed by other keys and slots.

The main shaft 7 passes through the hole of the hammer disc. In order to prevent the hammer disc from deviating from the main shaft due to rotation, a main shaft nut cover 12 can be set, and the hammer disc is fixed on the shaft body of the main shaft by the main shaft nut cover. Specifically, the spindle nut cover is provided with an internal thread, and the part protruding from the spindle and the hammer plate is provided with an external thread. The spindle nut cover is engaged on the spindle through the cooperation of the internal thread and the external thread, and the hammer plate and the spindle cannot be separated.

Please refer to Fig. 2 and Fig. 3, hammer heads are arranged on the hammer plate, there are multiple hammer heads, and the plurality of hammer heads are divergently arranged on the circular hammer plate with the center of the circle as the center. Specifically, the hammer head is a paddle-type hammer head 9, which is arranged obliquely to the circumference of the circular hammer disk, and the paddle-type hammer head protrudes toward the rotation direction of the hammer disk. The paddle-type hammer head is divided into an upper surface 90 and a lower surface 91, the upper surface forms a chamfer angle with the hammer plate, and the lower surface forms an inlet angle with the hammer plate. The inclined setting can greatly reduce the wind resistance of the paddle-type hammer head during high-speed operation, effectively improve the gas flow condition in the hammer head when it is working, and greatly reduce the wind resistance of the hammer head, thereby effectively reducing the cost of electricity consumption and saving energy consumption .

Please refer to FIG. 1 , in a specific embodiment, the size of the detachable sleeve 11 matches the size of the rotor structure. The detachable shaft sleeve used at the air inlet can adjust the air volume and pressure of the air inlet, so as to achieve the adjustment of output and fineness. Specifically, when the detachable sleeve is installed on the rotor structure, because the volume of the space at the air inlet becomes smaller, the speed of the air intake will be faster, and the wind pressure becomes larger and the air volume becomes smaller. In this case, the finished product The fineness of the powder is finer and the output is reduced; on the contrary, when the detachable sleeve is removed from the rotor structure, the wind pressure at the air inlet becomes smaller and the air volume becomes larger, and the fineness of the finished powder is thicker and Yield increased. Users can remove or install the detachable shaft sleeve according to specific needs.

Please refer to Fig. 1, the screening mechanism includes an outer drainage pipe 13, an inner drainage pipe 14, a support rod 15 and a classifier assembly.

In a specific embodiment, the classifier assembly includes a rotatable screening cylinder 16, a rotating shaft 17 and a driving motor for the rotating shaft, wherein the driving motor for the rotating shaft may be a synchronous motor or an asynchronous motor. The rotatable screening cylinder is a cylindrical screening mechanism with only one cylinder mouth. The cylinder mouth corresponds to the feed inlet. The side wall of the rotatable screening cylinder has sieve holes. The sieve holes can be rectangular, and the length of the rectangle is The height and width of the wall can be adjusted according to specific needs. If you need to screen out finer products, you can choose a rotatable screening cylinder with a shorter mesh width. If you need to screen out coarser products, you can choose a sieve Rotatable screening drum with long hole width. The cylinder wall can also choose a mesh cylinder wall.

When the powder is coarse, the powder cannot pass through the sieve hole of the rotatable screening cylinder, and the powder is blocked outside the sieve hole. Due to the strong wind in the machine body, the powder blocked outside the sieve hole does not fall down, but is attached to the rotatable screening cylinder, most of which will be attached to the sieve hole, so that the sieve hole will be blocked . Therefore, it is necessary to make the rotatable screening cylinder itself move, and the rotatable screening cylinder can be driven to rotate through the rotating shaft driving motor. Specifically, the shaft end of the rotating shaft is fixedly connected to the axial direction of the rotatable screening cylinder, and the other end of the rotating shaft is in transmission connection with the driving motor of the rotating shaft through gear-to-gear meshing, and the driving motor of the rotating shaft is fixed on the barrel.

Such an arrangement enables the rotatable screening cylinder to rotate at a high speed, and the powder clogging the sieve hole is thrown away from the sieve hole through rotation, which can prevent the sieve hole from being blocked and affect the normal operation of the pulverizer.

In a specific embodiment, the external drainage tube is sleeved on the classifier assembly, so that the powder can be directly blown onto the classifier assembly without being blown out of the external drainage tube. The inner drainage tube is fixed in the outer drainage tube through the support rod, and the inner drainage tube is located directly below the classifier assembly, and a material return channel is formed between the inner drainage tube and the outer drainage tube. The path of the powder in the machine body is: the powder is blown from the hammer plate into the inner drainage tube, and then blown from the inner drainage tube to the periphery of the rotatable screening cylinder machine, and the powder whose size is smaller than the sieve hole is sieved out from the sieve hole. The powder whose size is larger than the size of the sieve hole is thrown away from the rotatable screening cylinder through the rotation of the rotatable screening cylinder, and then the powder falls into the material return channel, and finally falls on the hammer plate to be crushed , until crushed to a size smaller than the size of the sieve. By arranging the inner drainage tube and the outer drainage tube, a material output channel and a material return channel 18 can be formed, providing different channels for the powder in the two directions without mutual influence, and improving the working efficiency.

It should be noted that the above descriptions are only embodiments of the present utility model, and those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept of the present utility model, so although the The above-mentioned embodiments have been described herein, but this does not limit the scope of patent protection of the utility model. Any equivalent structure or equivalent process conversion made by using the specification of the utility model and the contents of the accompanying drawings, or directly or indirectly using In other relevant technical fields, all are equally included within the patent protection scope of the present utility model.

Claims (9)

1. An impact mill, characterized in that it comprises a crushing mechanism, a screening mechanism, a support and a barrel; The barrel and the machine base are fitted together to form a cavity, the crushing mechanism and the screening mechanism are set in the cavity, the crushing mechanism is fixed on the machine base, the screening mechanism is fixed on the barrel, and the screening mechanism is located above the crushing mechanism; The connection between the screening mechanism and the barrel is provided with a discharge port, the side wall of the barrel is provided with a feed port and an air inlet, the feed port is located above the crushing mechanism, and the air inlet and The sides of the crushing mechanism are set opposite to each other; The pulverizing mechanism includes a rotor structure and a detachable shaft sleeve. An air inlet passage is formed between the pulverization mechanism and the machine barrel. The detachable shaft sleeve is detachably sleeved outside the rotor structure for changing the volume of the air inlet passage. 2. The impact mill according to claim 1, wherein the rotor structure comprises a bearing assembly, a main shaft, a hammer plate, a hammer head and a main shaft drive motor; the base of the bearing assembly is fixed on the machine base One end of the main shaft is sleeved in the bearing of the bearing assembly; the hammer disc is a circular hammer disc, and the center of the circular hammer disc is provided with a hole fixedly connected with the other end of the main shaft; the hammer head has multiple , a plurality of hammerheads are divergently arranged on the circular hammer plate with the center of the circle as the center; the spindle drive motor is connected with the spindle transmission, and is used to drive the spindle to rotate. 3. The impact mill according to claim 2, wherein an external spline is provided on the shaft body at the other end of the main shaft, and a hole matching the external spline is provided in the hole on the circular hammer plate. Internal splines. 4. The impact mill according to claim 2, characterized in that, the hammerhead is a paddle-type hammerhead, and the paddle-type hammerhead is divergently arranged on the hammer plate with the center of the circle as the center, and the paddle-type hammerhead The hammer head is inclined to the circumference of the circular hammer plate, and the paddle-type hammer head protrudes to the rotation direction of the hammer plate. 5 . The impact mill according to claim 2 , further comprising a spindle nut cover for preventing the hammer plate from being separated from the main shaft, and the main shaft nut cover fixes the hammer plate on the shaft body of the main shaft. 5 . 6. The impact mill according to claim 2, characterized in that, the main shaft drive motor is a synchronous motor or an asynchronous motor. 7. The impact mill according to claim 1, characterized in that, the screening mechanism comprises an outer drainage pipe, an inner drainage pipe, a support rod and a classifier assembly; the outlet and outlet of the classifier assembly The feed port is connected correspondingly, the outer drainage tube is socketed on the classifier assembly, the inner drainage tube is fixed in the outer drainage tube through the support rod, and the inner drainage tube is located directly below the classifier assembly; the inner drainage tube and the outer drainage tube A material return channel is formed between the tubes. 8. The impact mill according to claim 7, wherein the classifier assembly comprises a rotatable screening cylinder, a rotating shaft and a driving motor for the rotating shaft, and the mouth of the rotatable screening cylinder Corresponding to the feed inlet, screen holes are set on the wall of the screening cylinder; the rotating shaft is vertically arranged, one end of the rotating shaft is fixedly connected with the bottom of the rotatable screening cylinder, and the other end of the rotating shaft is connected to the bottom of the rotatable screening cylinder. The rotary shaft drives the motor transmission connection. 9. The impact mill according to claim 8, characterized in that, the rotating shaft driving motor is a synchronous motor or an asynchronous motor.