CN108452890A - A kind of crushing system - Google Patents

Abstract

The invention relates to a processing system in the field of feed machinery, in particular to a crushing system, which includes an inverted grinder, a discharge port at the upper end of the casing, a feed inlet at the lower part of the casing, and a cavity inside the casing. An arc-shaped sieve is fixedly installed, and an arc-shaped tooth plate is fixedly installed in the cavity of the casing, and the radius of curvature of the tooth plate is larger than that of the sieve. The beneficial effect is that the radius of curvature of the lower tooth plate is greater than that of the upper sieve to form a step, which can destroy the "circulation layer" formed when the material rotates, and large particles of material are blocked in the step of the tooth plate and pass through the circulation. Function, fully friction and collision of large particle materials on the tooth plate for secondary crushing improves the crushing efficiency.

Description

a crushing system

technical field

The invention relates to a processing system in the field of feed machinery, in particular to a crushing system.

Background technique

There are many types of crushing equipment used in the crushing and processing system of the feed industry. Among them, the most widely used are claw and hammer mills. Materials enter the crushing cavity from the upper or middle part of the grinder by gravity. The material comes out from the lower part. When the material is in high-speed centrifugal motion, it will form a circulating layer rotating along the screen surface. Under the action of centrifugal force, the large particles in the material will accumulate in the outer ring of the circulating layer, while the small particles will accumulate in the inner ring of the circulating layer. Large particles block the mesh and prevent small particles from passing through the sieve, which reduces the efficiency of crushing and screening, easily causes excessive crushing of materials, and increases the temperature of materials, which greatly increases the energy consumption of crushing.

The smaller the sieve hole, the more obvious the circulation layer of the material, the more serious the wear of the sieve, and the more difficult it is for the material to pass through the sieve, which limits the further improvement of the production capacity of the pulverizer; Screening area. When using Shakron to collect materials, when the outlet of the pulverizer is located below, the required pipeline is long, with many turns, large wind resistance loss, and large power consumption of the fan.

At the same time, when the pulverizer feeds from the top, impurities such as stones and iron blocks mixed in the materials are easy to damage the sieve, and it is often necessary to add iron and stone removal devices.

Contents of the invention

The problem to be solved by the present invention is to provide a crushing system with high feed crushing efficiency. The present invention is achieved through the following technical solutions:

A shredding system comprising:

The flip-chip pulverizer includes a machine base and a casing installed on the base. The inside of the casing is provided with a closed cavity, and the upper end of the casing is provided with a discharge port communicating with the cavity. The machine The lower part of the casing is provided with a feed port communicating with the cavity; the casing is provided with a rotor disk assembly installed in the cavity inside the casing through the radial rotation of the main shaft; the cavity of the casing is fixedly installed with The arc-shaped sieve surrounding the upper half of the rotor disk assembly, the arc-shaped tooth plate surrounding the lower half of the rotor disk assembly is fixedly installed in the cavity of the casing, and the tooth plate is provided with a Aligned openings, the radius of curvature of the tooth plate is greater than the radius of curvature of the sieve;

The hopper is connected to the feed inlet through the feed air pipe, and the bottom side is equipped with a latch door for cleaning foreign matter and adjusting the air volume;

Shacron, the air inlet is connected to the outlet through the air duct, and the lower end is equipped with an unloader;

The fan, the suction port of the fan is connected to the air outlet of the Shacron, and the exhaust port of the fan is connected to the dust bag through the air duct. With such a design, compared with the usual pulverizer that feeds from the top and discharges from the bottom, the self-priming bottom feed can save the feeder and reduce the labor intensity of the workers. The fan forms a negative pressure airflow, and the material enters the lower end of the casing through the pipe. The feed port can reduce heavy impurities such as iron and stones from entering the cavity of the casing and reduce damage to the screen; the radius of curvature of the lower tooth plate is larger than that of the upper screen to form a step, which can The "circulation layer" formed when the material rotates is destroyed, and the large-grained material is blocked in the step of the tooth plate. Through the action of circulation, the friction and collision of the large-grained material on the tooth plate are fully crushed for the second time to improve the crushing efficiency. After crushing, it is qualified. The material enters the discharge port through the sieve; the discharge port is at the upper end of the pulverizer, and the pipeline connected with the Shacron is greatly shortened, reducing a turn, reducing wind resistance, reducing fan consumption, and improving efficiency.

Further, the rotor disc assembly of the flip-chip pulverizer includes a rotor disc, and the left and right end faces of the rotor disc are fixedly equipped with a plurality of moving claws distributed around 3 to 6 concentric circles; the casing The left and right sides of the inner wall are fixed with a number of fixed claws that are evenly distributed around 2 to 6 concentric circles; a group of fixed claws that are circularly distributed are inserted into two adjacent groups of movable claws that are circularly distributed on the same side In the gap between the teeth; the rotor disk is evenly fixed and connected with several flat teeth in the circumferential direction; the end of the main shaft protruding from the outside of the casing is equipped with a driven pulley, the motor is installed on the base, and the output shaft of the motor is installed. A driving pulley, the driving pulley and the driven pulley are equipped with belts. With such a design, the fixed claws and movable claws crush materials alternately, and the flat teeth crush materials at the same time, which improves the crushing efficiency of materials.

Further, the end of the feed air pipe connected to the feed inlet is higher than the end connected to the hopper, and the lower end of the hopper is provided with a plug-type hopper switch that can adjust the size of the opening. With such a design, heavy impurities such as iron blocks and stones will not be easily sucked into the cavity of the casing, and the hopper switch controls the amount of feeding.

Further, the lower part of the cavity of the casing is semicircular, the middle part is square, and the upper part is conical; the sieve is semicircular, and the tooth plate is semicircular; the sieve The two ends are welded with transverse baffles fixedly placed on the two ends of the tooth plate. Such design, reasonable structure, make full use of space.

Further, the outer diameter of the rotor disc assembly is 800-1000mm, the radius of curvature of the tooth plate is 482-582mm, the radius of curvature of the sieve is 416-516mm, and the radius of curvature of the tooth plate is as large as the sieve The radius of curvature is 65~70mm. So designed, the size design is reasonable.

Compared with the prior art, the beneficial effect of the present invention is: compared with the pulverizer that usually feeds from the top and discharges from the bottom, the self-priming bottom feed can save the feeder and reduce the labor intensity of the workers, and the fan can form a Negative pressure airflow, the material enters the feed port at the lower end of the casing through the material pipeline, reducing the impurities such as iron blocks and stones entering the cavity of the casing, reducing the damage to the sieve; the fixed claws and movable claws are crushed alternately The material is crushed by flat teeth at the same time, which improves the efficiency of material crushing. The rotor disc assembly is located in the middle of the crushing chamber, and both the inner and outer crushing chambers participate in the crushing, so the space utilization rate of the crushing chamber is good. The sieve is located above the crushing chamber, which is easy to replace, not easy to damage, has a long service life and low cost of use. The radius of curvature of the lower tooth plate is greater than that of the upper sieve plate to form a step, which can destroy the "circulation layer" formed when the material rotates. Large particles of material are blocked in the step of the tooth plate, and through the circulation effect, The secondary crushing of the large-grained materials on the tooth plate fully improves the crushing efficiency, and the qualified materials after crushing pass through the screen and enter the discharge port; the discharge port is at the upper end of the pulverizer, and the pipeline connected with the Shacron is greatly shortened , and one less turn, reducing wind resistance, reducing fan consumption and improving efficiency. It is collected by Sacron sedimentation, and the unloading speed of the material is adjusted by frequency conversion and speed regulation of the unloader. After the Sacron sedimentation, the dusty gas is blown into the dust bag by the fan, and then filtered again, and the material remains in the bag. , while the clean gas is discharged into the air through the gap of the bag. The invention has the advantages of simple and compact structure, convenient operation and maintenance.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a front structural schematic view of the flip-chip pulverizer shown in Fig. 1;

Fig. 3 is a schematic diagram of the right view structure of Fig. 2;

Fig. 4 is a schematic diagram of the cavity structure of the flip-chip pulverizer shown in Fig. 1;

In the figure: 1. Inverted pulverizer; 2. Hopper; 3. Shacron; 4. Unloader; 5. Dust bag; 6. Fan; 7. Shell; 8. Sieve; 9. Motor; 10. Discharge port; 11. Feed port; 12. Machine base; 13. Tooth plate; 14. Rotor plate; 15. Movable claw; 16. Fixed claw; 17. Main shaft; 18. Flat teeth.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Taking the processing of crushed feed as an example, the crushing system shown in Figures 1 to 4 includes: an inverted grinder 1, including a machine base 12, and a casing 7 installed on the base. The inside of the casing 7 is provided with a closed The upper end of the casing 7 is provided with a discharge port 10 communicated with the cavity, and the lower part of the casing 7 is provided with a feed port 11 communicated with the cavity; The rotor disk assembly in the inner cavity of the shell 7; wherein, the rotor disk assembly includes a rotor disk 14 with a diameter of 800mm, and the left and right ends of the rotor disk 14 are fixedly installed with several moving claws distributed around 6 concentric circles 15; The left and right sides of the inner wall of the casing 7 are fixedly installed with several fixed claws 16 that are evenly distributed around 5 concentric circles; In the gap between the distributed claw teeth; the rotor disk 14 is evenly fixed and connected with several flat teeth 18 in the circumferential direction; , the output shaft of the motor 9 is equipped with a driving pulley, and the driving pulley and the driven pulley are equipped with belts; the lower part of the cavity of the casing 7 is semicircular, the middle part is square, and the upper part is conical. A semicircular sieve 8 surrounding the upper half of the rotor disk assembly is fixedly installed in the cavity, and the radius of curvature of the sieve 8 is 416 mm. A semicircular screen 8 surrounding the lower half of the rotor disk assembly is fixedly installed in the chamber Circular tooth plate 13, the radius of curvature of the tooth plate 13 is 482mm, the two ends of the sieve plate 8 are welded with cross plates fixedly placed on the two ends of the tooth plate 13, the tooth plate 13 is provided with the feeding port 11 and aligned The opening of the hopper; the hopper 2 is connected to the feed port 11 through the feed air pipe, and the bottom side is equipped with a latch door for cleaning foreign matter and adjusting the air volume. The end of the feed air pipe connected to the feed port is higher than the end connected to the hopper , the inclination angle of the feed air duct is 25°, and the lower end of the hopper is provided with a plug-type hopper switch with an adjustable opening size; Sacron 3, the air inlet is connected to the discharge port 10 through the air duct, and the unloader 4 is installed at the lower end; Fan 6, the suction port of the fan is connected to the air outlet of the Shacron 3, and the exhaust port of the fan is connected to the dust bag 5 through the air duct.

Specific use process

Turn on the fan to form a negative pressure airflow. The material enters from the hopper, enters the feed port through the feed air pipe, and then enters the flip-chip pulverizer. Due to the inclination angle of the feed air pipe, heavy foreign matter such as iron blocks remains under the hopper After the work is completed, the latch door can be opened to clean up foreign matter, the material enters the cavity, the motor is turned on to drive the rotor disk assembly to rotate, the material is crushed under the cooperation of the fixed claw teeth, movable claw teeth and flat teeth, and the tooth plate below The radius of curvature is larger than that of the upper sieve to form a step, which can destroy the "circulation layer" formed when the material rotates. The large-particle material is blocked in the step of the tooth plate. Through the effect of circulation, the large-particle material is on the tooth plate. The secondary crushing with full friction and collision improves the crushing efficiency. The qualified materials after crushing pass through the sieve and enter the discharge port under the action of negative pressure airflow; enter the Shacron through the pipeline, and the qualified materials are unloaded through the inverter controlled by the frequency conversion motor. The dust-laden gas after passing through the sacron is blown into the dust bag by the fan, and then filtered again, the material remains in the bag, and the clean gas is discharged into the air through the gap of the bag, so as to save energy. Effect.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the present invention can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the present invention shall be covered by the scope of the claims of the present invention.

Claims (5)

1. a kind of crushing system, which is characterized in that including：

Flip-over type pulverizer（1）, including engine base（12）, casing on pedestal（7）, the casing（7）It is internally provided with Closed vessel, the casing（7）Upper end is equipped with the discharge port communicated with vessel（10）, the casing（7）Lower part is equipped with and appearance The feed inlet that chamber communicates（11）；The casing（7）Interior be equipped with is mounted on casing by main shaft (17) radial rotating（7）Inner volume In rotor disc assembly；The casing（7）Vessel in be installed with surround rotor disc assembly top half arc sieve （8）, the casing（7）Vessel in be installed with the arc tooth plate for surrounding rotor disc assembly lower half portion（13）, the tooth Plate（13）It is equipped with and feed inlet（11）It is bonded the opening of alignment, the tooth plate（13）Radius of curvature be more than the sieve（8）'s Radius of curvature；

Hopper（2）, feed inlet is connected to by feeding air hose（11）, bottom side, which is equipped with, clears up foreign matter and regulating air volume Bolt door；

Cyclone（3）, air inlet is connected to discharge port by air hose（10）, lower end is equipped with discharger（4）；

Wind turbine（6）, fan induced draught mouth connection cyclone（3）Air outlet, wind turbine exhaust outlet is connected to dust-removal cloth-bag by air hose （5）.

2. crushing system according to claim 1, which is characterized in that the flip-over type pulverizer（1）Rotor disc assembly, Including rotor disk（14）, the rotor disk（14）Left and right end face is installed in 3 ~ 6 donuts around the several of distribution A moving teeth pawl（15）；The casing（7）It is installed in 2 ~ 6 donuts around equally distributed several at left and right sides of inner wall A fixed tooth pawl（16）；It is inserted between pawl tooth of the homonymy two adjacent groups in circular ring shape distribution in one group of fixed tooth pawl of circular ring shape distribution Gap in；The rotor disk（14）It is uniformly fixedly connected with several flat teeth in circumferencial direction（18）；Main shaft（17）Stretching machine One end on the outside of shell is equipped with driven pulley, and engine base is equipped with motor on (12)（9）, motor（9）Output shaft master is installed Dynamic belt pulley, the drive pulley and driven pulley are equipped with belt.

3. crushing system according to claim 1, which is characterized in that one end of the charging air hose connection feed inlet is higher than It is connected to one end of hopper, and the bolt-type hopper that the hopper lower end is equipped with adjustable openings size switchs.

4. crushing system according to claim 1, which is characterized in that the casing（7）Vessel lower portion be it is semicircle, Intermediate position is rectangular, upper bit is taper；The sieve（8）For semicircle, the tooth plate（13）For semicircle；The sieve （8）Both ends are welded with fixed placement in tooth plate（13）Lagging on both ends.

5. crushing system according to claim 4, which is characterized in that rotor disk（14）Outer diameter is 800 ~ 1000mm, described Tooth plate（13）Radius of curvature be 482 ~ 582mm, the sieve（8）Radius of curvature be 416 ~ 516mm, the tooth plate（13） Radius of curvature greatly shown in sieve（8）65 ~ 70mm of radius of curvature.