CN104941748B - A kind of flour mill - Google Patents

Abstract

The invention discloses a mill, which is composed of a frame, an automatic feeding machine, a particle material cylinder, a vibrating feeder, a feeding pipe, a mill, a fan, a material suction pipe, a cyclone separator, a combined shut-off fan, Composed of rotating frame, counterweight, separating screen and soft interface, the upper cover and the main shaft shell of the mill are respectively fixed on the upper and lower sides of the grinding disc shell, the main shaft is installed in the main shaft shell through the bearing, and the lower cutter head is installed on the movable There is a gap between the upper and lower cutter heads and the moving disk, the moving disk and the main shaft are fixed, the upper cutter head is fixed on the fixed seat, and there is a gap between the upper cutter head and the fixed seat, and the grinding disc shell is provided for cooling separately. On the outside of the upper cutter head, between the upper cutter head and the lower cutter head, on the upper air passage, the middle air passage, and the lower air passage outside the lower cutter head, the air outlet is connected to the fan, the fixing seat is connected to the upper cover, and the material inlet is connected to the fixing seat Connected, the present invention has the characteristics of adopting air cooling for the upper cutter head and the lower cutter head, stable rotation, high working efficiency, and automatic matching of eccentric loads.

Description

a mill

technical field

The invention belongs to the technical field of material crushing equipment, and in particular relates to a pulverizer.

Background technique

The pulverizer has been widely used as a material crushing equipment. The mill cutter head of the existing pulverizer is generally provided with a water inlet and a water outlet on the upper cover, and the upper cutter head is cooled by cooling water. If the seal is not good, Leakage is prone to occur, there is no gap between the lower cutterhead and the moving disk, and it is not easy to cool, resulting in high temperature of the lower cutterhead, which seriously affects the output; the rotating frame used is generally the middle part of the main eccentric shaft and the auxiliary eccentric shaft through the bearing seat and fixed The frame is fixed, the end is fixed with the screen rotating frame through the bearing seat, the motor and the rotating frame are fixed, the main eccentric shaft and the auxiliary eccentric shaft are connected together through a synchronous belt, and the main eccentric shaft and the auxiliary eccentric shaft work together under the drive of the motor. The synchronous rotation movement drives the rotating frame to perform a fixed swing movement around the center. Although this structure can meet the needs, due to the eccentric movement, the vibration is relatively large, and a certain amount of noise is generated. Long-term use will cause the connection to loosen and cause safety hazards. Accident; the separation sieve is composed of multi-layer screens, the screen frame is fixed from top to bottom, and the mesh number gradually increases from top to bottom. The powder that meets the requirements is screened out from the discharge port, and the powder that does not meet the requirements is discharged from the return port. Since the powder on each layer can only be screened once, the powder that meets the requirements cannot be screened out in time, and the return The amount of returned material collected by the feed port is large and the productivity is low; the counterweight structure adopted is that the counterweight block is fixed on the main shaft and the sub shaft of the rotary frame, the main shaft and the sub shaft are connected by a synchronous belt, and the motor drives the synchronous belt to make the main shaft and the sub shaft The shaft rotates synchronously. Due to the difference in installation and resistance in various aspects, the weight of the counterweight needs to be adjusted accordingly to make the rotating frame run smoothly. Different speeds of the rotating frame require different weights of the counterweight. Therefore, the counterweight structure The adjustment is more troublesome.

Contents of the invention

The purpose of the present invention is to improve the deficiencies of the existing technology and provide a pair of upper cutter head, the lower cutter head is air-cooled, stable in rotation, small in vibration, fully screened powder, high in work efficiency, and can be automatically matched due to deflection. Running resistance, rotation speed and other differences cause unbalanced load phenomenon, which makes the rotation more stable.

The content of the present invention is realized in this way, a kind of pulverizing machine is made up of frame, automatic feeder, granule barrel, vibrating feeder, feeding pipe, mill, blower fan, suction pipe, cyclone separator , combined shut-off fan, rotating frame, counterweight, separating screen and soft interface, characterized in that the upper cover and the main shaft shell of the mill are respectively fixed on the upper and lower sides of the grinding disc shell, and the main shaft is installed on the main shaft shell through bearings Inside, the lower cutter head is installed on the moving disk, there is a gap between the lower cutter head and the moving disk, the moving disk and the main shaft are fixed, the upper cutter head is fixed on the fixed seat, and there is a gap between the upper cutter head and the fixed seat, There are upper air passage, middle air passage and lower air passage for cooling the outer side of the upper cutter head, between the upper cutter head and the lower cutter head, and the outer side of the lower cutter head in the grinding disc shell. The air outlet is connected to the fan, and the fixing seat is connected to the upper cover. , the feed port is connected with the fixed seat, the main shaft drives the lower cutter head fixed on the moving disk to rotate, and the motor fixed on the frame drives the main shaft to rotate.

In order to further realize the purpose of the present invention, it may be that the upper air channel for cooling the outer side of the upper cutter head is provided with a fixed disk annular notch on the fixed seat, and the fixed disk annular notch makes the upper air channel air inlet and the fixed seat, the upper The gap between the cutter heads is connected, and the gap between the fixed seat and the upper cutter head is connected with the air outlet of the upper air channel.

In order to further achieve the object of the present invention, the annular notch of the fixed disk may be arranged at the place where the fixed seat is close to the main shaft, and the air outlet of the upper air passage is arranged on the outer circumference of the fixed disk.

In order to further realize the purpose of the present invention, it may be that the middle air passage used for cooling between the upper cutter head and the lower cutter head is to use the feed port as the air inlet of the middle air passage, and the gap between the upper cutter head and the lower cutter head Connect and communicate with the air inlet of the middle air duct and the air outlet of the middle air duct.

In order to further realize the purpose of the present invention, it may be that the lower air passage for cooling the outer side of the lower cutter head is provided with an annular notch on the moving disk, and the annular notch of the moving disk makes the air inlet of the lower air passage connect with the moving disk and the lower air passage. The gap between the cutter heads is connected, and the gap between the moving disk and the lower cutter head is connected with the air outlet of the lower air duct.

In order to further realize the object of the present invention, the annular notch of the moving disk may be arranged at a place close to the main shaft of the moving disk, and the air outlet of the downflow channel may be arranged at the outer circumference of the moving disk.

In order to further realize the purpose of the present invention, the upper cutter head and the lower cutter head may be double-sided cutter tooth structures.

In order to further realize the purpose of the present invention, it may be that the rotating frame is installed on the fixed plate on the frame through the boom, the motor is fixed on the rotating frame, the main shaft and the auxiliary shaft are installed on the rotating frame through the bearing seat, and the main shaft The counterweight iron is installed on the auxiliary shaft, the motor drives the main shaft to rotate through the pulley, and the main shaft drives the auxiliary shaft to rotate synchronously through the synchronous belt connection.

In order to further realize the purpose of the present invention, the upper end of the suspension rod may be fixed on the fixed plate through the joint bearing, the lower end of the suspension rod is fixed on the bracket welding plate through the joint bearing, and the bracket welding plate and the rotating frame are welded as one.

In order to further realize the purpose of the present invention, it may be that the separating screen is composed of a housing, a feed port, a discharge port and a feed return port, and two or more sieve layers are arranged in the housing, and the sieve layer is The screen is installed above the screen frame, and a semi-closed material bin with a discharge opening on one side is formed between the screen and the screen frame. For the feeding channel, the feeding channels formed by the adjacent two layers of sieve layers are staggered, and the lowermost feeding channel is connected with the feeding port, and the screens used are screens with the same mesh number.

In order to further realize the object of the present invention, the counterweight can be that the main shaft and the auxiliary shaft of the rotating frame are used as the fixed axis of the counterweight, and the fixed counterweight is fixed on the fixed axis, and the dynamic counterweight and the fixed counterweight are connected by The shaft is connected, and a positioning pin is arranged on the moving counterweight, and the torsion spring clip on the connecting shaft is sleeved between the fixed shaft and the positioning pin.

Compared with the prior art, the present invention has the following remarkable features and positive effects: the present invention adopts three air ducts to respectively cool the outer side of the upper cutterhead, between the upper cutterhead and the lower cutterhead, and the outer side of the lower cutterhead, so as to realize the , The all-round cooling of the lower cutter head can not only cool the upper cutter head, but also fully cool the lower cutter head and the space between the upper and lower cutter heads, which solves the problem that the existing mill cutter head structure cannot Disadvantages of cooling the disk and the moving disk, the use of air cooling avoids the problems of serious corrosion and easy leakage of the existing water cooling; the upper cutter head and the lower cutter head are designed with double-sided cutter teeth structure, which not only increases the heat dissipation area , so that the cooling effect is more sufficient, and the upper and lower cutterheads can be used front and back, which improves production efficiency and saves production costs.

The rotating frame is installed on the fixed plate through the suspender, so that the rotating frame is movably connected with the fixed plate through the suspender, and the vibration generated by the rotation of the rotating frame will not be completely transmitted to the fixed plate, which reduces the vibration transmission and reduces the noise. To ensure the life of the connection, the motor is fixed on the rotating frame, the main shaft and the auxiliary shaft are installed on the rotating frame through the bearing seat, and the counterweight iron is installed on the main shaft and the auxiliary shaft, the motor drives the main shaft to rotate through the pulley, and the main shaft drives the auxiliary shaft through the synchronous The shafts rotate synchronously, so that the vibration generated by the eccentric rotation of the motor driven rotating frame is completely borne by the rotating frame, which will not affect the connection between the rotating frame and the fixed plate, prolonging the service life and reducing the vibration; the upper end of the boom passes through the joint The bearing is fixed on the fixed plate, the lower end of the boom is fixed on the bracket welding plate through the joint bearing, and the bracket welding plate and the rotating frame are welded as a whole. This structure has simple and flexible connection, less vibration transmission and long service life; The frame is installed on the fixed plate through the suspender, which can be easily disassembled, convenient for maintenance and replacement, and reduces the use cost.

There are two or more sieve layers in the housing, the sieve layer is installed above the screen frame, and a semi-closed material bin with a discharge opening on one side is formed between the screen and the screen frame. It is connected with the discharge port, and a feeding channel is formed between the screen layer and one side of the shell. The feeding channels formed by the adjacent two layers of screen layers are staggered, and the lowermost feeding channel is connected with the return port. The used The sieve mesh adopts the same mesh number, so that each layer of sieve layer can screen out the undersieve material that meets the requirements and directly discharge it through the discharge port, which reduces the workload of the next layer of sieve layer and improves work efficiency. , The materials that do not meet the requirements and have not been screened will fall to the lower sieve layer through the discharge channel to continue screening, further screen out the materials that meet the requirements, and further improve the screening rate of materials. After multi-layer screening, complete screening can basically be guaranteed. The material that meets the requirements improves the utilization rate of the material, reduces the amount of recycled materials, and improves the production efficiency. By replacing other screens with the required mesh, the powder of the required mesh can be separated.

The main shaft and auxiliary shaft of the rotating frame are used as the fixed shaft of the counterweight. The fixed counterweight is fixed on the fixed shaft. The dynamic counterweight and the fixed counterweight are connected through the connecting shaft. There is a positioning pin on the moving counterweight, which is set on the connecting shaft. The torsion spring clip on the top is installed between the fixed shaft and the positioning pin on the dynamic counterweight, so that the groove on the dynamic counterweight is close to the fixed shaft. When the main shaft and the auxiliary shaft rotate synchronously, the counterweight is synchronized with the main and auxiliary shafts. Rotation, at different speeds, under the action of the torsion spring, the dynamic counterweight will swing around the connecting shaft at different angles to balance the weight of the rotating frame. The invention has simple structure, good shock absorption effect, and low noise. When the speed changes, under the action of the torsion spring, the dynamic counterweight can swing at different angles, automatically adapt to the eccentric load of the rotating frame, and run smoothly, avoiding the operation of frequently replacing the counterweight iron, reducing production costs and improving work efficiency.

Description of drawings

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

Fig. 1 is a kind of structure diagram of the present invention.

FIG. 2 is a side view of FIG. 1 .

Fig. 3 is a schematic structural view of the mill of the present invention.

Fig. 4 is another structural schematic view of the mill of the present invention.

Fig. 5 is a schematic structural view of the mill fixing seat of the present invention.

Fig. 6 is a schematic diagram of the structure of the grinding wheel of the present invention.

Fig. 7 is a schematic structural view of the rotating frame of the present invention.

Fig. 8 is a schematic structural view of the separating screen of the present invention.

Fig. 9 is another cross-sectional view of the separation screen of the present invention.

Fig. 10 is a schematic structural view of the counterweight of the present invention.

detailed description

Embodiment 1, a kind of pulverizer, with reference to Fig. 1, Fig. 2, Fig. 3, is to be fixed on the frame 1 in successively connected automatic feeder 2, particle feeder 3, vibrating feeder 4, vibrating feeder The feeder 4 is connected to the feed port 611 of the mill 6 fixed on the frame 1 through the feed pipe 5, and the discharge port of the mill 6 is connected with a suction pipe 7, and the suction pipe 7 is combined with the cyclone separator 9 and Turn off fan 8 and connect, fan 10 fixed on the frame 1 is connected with cyclone separator 9 through suction pipe 11, rotating frame 12 is fixed on the fixed plate on the frame 1, and the main and auxiliary shafts of rotating frame 12 are provided with There is a counterweight 13, and the separation screen 14 is installed in the rotary frame 12. The feed port of the separation screen 14 is connected with the lower port of the combined shut-off fan 8 through a soft interface, and the discharge port of the separation screen 14 is connected with the finished product barrel 15 through a soft interface. connection, the return port communicates with the feed port 611 of the mill 6 through a soft interface, the upper cover 66 and the main shaft shell 67 of the mill 6 are respectively fixed on the upper and lower sides of the grinding disc shell 68, and the main shaft 61 is installed through a bearing In the main shaft housing 67, the lower cutter head 63 is installed on the moving disk 62, there is a gap between the lower cutter head 63 and the moving disk 62, the moving disk 62 is fixed to the main shaft 61, and the upper cutter head 64 is fixed on the fixed seat 65. There is a gap between the upper cutter head 64 and the fixed seat 65, and the upper air passage 612 and the middle air passage for cooling the outer side of the upper cutter head, between the upper cutter head and the lower cutter head, and the outer side of the lower cutter head are respectively arranged in the grinding wheel housing 68. 613, the lower air channel 614, the air outlet 69 is connected to the fan 10, the fixed seat 65 is connected to the upper cover 66, the feed port 611 is connected to the fixed seat 65, and the main shaft 61 drives the lower cutter head 63 fixed on the moving disk 62 to operate Rotating motion, the feeding port 611 of the mill 6 is connected with the vibrating feeder 4 through the feeding pipe 5, and the pellets pass through the automatic feeder 2, the pellet barrel 3, the vibrating feeder 4, the feeding pipe 5, the feeder The feed port 611 enters between the upper cutter head 64 and the lower cutter head 63 in the mill 6 for grinding, and the discharge port is arranged on the grinding disc shell 68 and connected with the suction pipe 7, which constitutes a structure of the present invention.

Embodiment 2, a pulverizer, referring to Fig. 1 to Fig. 6, is based on Embodiment 1, and the upper air channel 612 for cooling the outer side of the upper cutter head is provided with a ring-shaped fixed seat on the fixed seat 65. The notch 615 and the annular notch 615 of the fixing seat make the air inlet 616 of the upper air passage communicate with the gap between the fixing seat 65 and the upper cutter head 64, and the gap between the fixing seat 65 and the upper cutter head 64 communicate with the air outlet 618 of the upper air passage , the upper air passage air inlet 616 is arranged on the upper cover 66, the fixing seat annular notch 615 is arranged on the fixing seat 65 close to the main shaft 61, and the upper air passage air outlet 618 is arranged on the outer circumference of the fixing seat 65, said for Cool the middle air channel 613 between the upper cutter head and the lower cutter head with the feed port 611 as the air inlet of the middle air channel, and the gap between the upper cutter head 64 and the lower cutter head 63 is connected to the air inlet of the middle air channel and the air outlet of the middle air channel 619, the lower air passage 614 for cooling the outer side of the lower cutter head is that the moving disk 62 is provided with a moving disk annular notch 617. The gap between 63 is connected, and the gap between the moving disc 62 and the lower cutter disc 63 is connected with the air outlet 621 of the lower air duct. At the place where the moving disk 62 is close to the main shaft 61, the downflow air outlet 617 is arranged on the outer circumference of the moving disk 62, and the upper cutter head 64 and the lower cutter head 63 are double-sided knife-tooth structures, and the others are completely the same as in the first embodiment.

Embodiment 3, a mill, referring to Fig. 1 to Fig. 7, is based on Embodiment 2, the upper end of the suspension rod 74 is fixed on the fixed plate 71 through the joint bearing 72, and the lower end of the suspension rod 74 is fixed on the fixed plate 71 through the joint bearing 72 is fixed on the bracket welding plate 710, the bracket welding plate 710 is welded into one body with the rotating frame 12, the motor 713 is fixed on the rotating frame 12, and the main shaft 76 and the auxiliary shaft 77 installed on different sides of the rotating frame 12 are installed on the rotating frame through the bearing seat. On frame 12, counterweight iron 13 is housed on main shaft 76 and auxiliary shaft 77, and motor 713 drives main shaft 76 to rotate, and main shaft 76 is connected to drive auxiliary shaft 77 to do synchronous rotation by synchronous belt 75, and other is identical with embodiment 2.

Embodiment 4, a kind of pulverizer, with reference to Fig. 1 to Fig. 9, is on the basis of embodiment 3, and described separating screen 14 is provided with feed inlet 82 on the top of housing 81, and the top of housing 81 The lower part is provided with a material outlet 83 and a material return port 84, and two or more sieve layers 85 are arranged in the housing 81. The sieve layer 85 is that the sieve 86 is installed above the sieve frame 87, and the sieve 86 is connected with the sieve. A semi-enclosed material bin 88 with a discharge opening 89 on one side is formed between the frames 87. The discharge opening 89 communicates with the discharge port 83, and a discharge channel 810 is formed between the screen layer 85 and one side of the housing 81. The feeding channels 810 formed by the adjacent two layers of sieve layers 85 are staggered, and the lowermost feeding channel 810 communicates with the feeding port 84. The screens 86 used are screens with the same mesh number. In this embodiment, six layers of screens are used. layer, others are identical to embodiment 3.

Embodiment 5, a mill, referring to Fig. 1 to Fig. 10, is on the basis of embodiment 4, and the described counterweight 13 is the main shaft 76 and the auxiliary shaft 77 of the rotating frame 12 as the fixed axis of the counterweight 96, the fixed counterweight 97 is fixed on the fixed shaft 96 close to the side of the swivel frame 12, the dynamic counterweight 98 and the fixed counterweight 97 are connected through the connecting shaft 910, and the dynamic counterweight 98 is provided with a positioning pin 99, which is sleeved on the connecting shaft 910 The upper torsion spring 911 snaps between the fixed shaft 96 and the locating pin 99 on the dynamic counterweight 98, and the groove on the dynamic counterweight 98 is close to the fixed shaft 96. Others are identical to embodiment 4.

Claims (11)

1. a kind of flour mill, it is by frame, automatic charging machine, particle barrel, vibrating feeder, feed pipe, grinding machine, blower fan, suction Expects pipe, cyclone separator, combination Blowing stopper, swivel mount, counterweight, bolter and soft interface composition, it is characterized in that described grinding machine It is that upper lid, main shaft shell are separately fixed at the both sides up and down of mill housing, main shaft is arranged in main shaft shell by bearing, lower cutterhead peace Lower that gap is left between cutterhead and Moving plate on Moving plate, Moving plate is fixed with main shaft, and upper tool pan is fixed in fixed seat, upper slitter Leave gap between disk and fixed seat, be provided with mill housing be used to cooling down respectively on the outside of upper tool pan, upper tool pan and lower cutterhead it Between, the upper air duct on the outside of lower cutterhead, middle air channel, lower air duct, air outlet connects with blower fan, and fixed seat connects with top cap, enters Material mouth connects with fixed seat, and main shaft drives the lower cutterhead being fixed on Moving plate to rotate, the electricity being fixed in frame Machine connection drives main shaft rotation.

A kind of 2. flour mill according to claim 1, it is characterized in that the described upper air duct for cooling down on the outside of upper tool pan It is that fixed seat is provided with fixed disk annular notches, fixed disk annular notches make between upper air duct air inlet and fixed seat, upper tool pan Gap connection, the gap between fixed seat, upper tool pan connects with upper air duct air outlet.

A kind of 3. flour mill according to claim 2, it is characterized in that described fixed disk annular notches are arranged on fixed seat At main shaft, upper air duct air outlet is arranged on the excircle of fixed disk.

A kind of 4. flour mill according to claim 1, it is characterized in that described is used to cool down between upper tool pan and lower cutterhead Middle air channel be that air inlet of air duct, the gap between upper tool pan and lower cutterhead connect middle air channel air intake in using charging aperture Mouth, middle duct outlet.

A kind of 5. flour mill according to claim 1, it is characterized in that the described lower air duct for cooling down on the outside of lower cutterhead It is that Moving plate is provided with Moving plate annular notches, Moving plate annular notches connect the gap between lower air duct air inlet and Moving plate, lower cutterhead Logical, the gap between Moving plate, lower cutterhead connects with lower air duct air outlet.

6. a kind of flour mill according to claim 5, it is characterized in that to be arranged on Moving plate close for described Moving plate annular notches At main shaft, lower air duct air outlet is arranged at the excircle of Moving plate.

A kind of 7. flour mill according to claim 1, it is characterized in that described upper tool pan and lower cutterhead are two-sided cutter tooth knot Structure.

A kind of 8. flour mill according to claim 1, it is characterized in that described swivel mount is in frame by hanger erection On fixed plate on, motor is fixed on swivel mount, and main shaft and countershaft are arranged on swivel mount by bearing block, main shaft and countershaft Upper that balance weight iron is housed, motor is rotated by belt wheel drive shaft, and main shaft is connected by timing belt drives countershaft to do synchronous rotary.

A kind of 9. flour mill according to claim 8, it is characterized in that the upper end of described suspension rod is fixed by oscillating bearing In fixed plate, the lower end of suspension rod is fixed in support welding plate by oscillating bearing, and support welding plate is welding as one with swivel mount.

A kind of 10. flour mill according to claim 1, it is characterized in that described bolter is by housing, charging aperture, discharging Mouth and feedback outlet composition, two layers and above screen layers are provided with housing, described screen layers are that screen cloth is arranged on above screen frame, screen cloth The semiclosed material bin that side is provided with discharge openings is formed between screen frame, discharge openings connect with discharging opening, screen layers and housing Wherein side between form blanking channel, the blanking channel stagger setting that the screen layers of adjacent two layers are formed, undermost blanking is led to Road connects with feedback outlet, and screen cloth used uses mesh number identical screen cloth.

A kind of 11. flour mill according to claim 1, it is characterized in that described counterweight is the main shaft of swivel mount, countershaft As the dead axle of counterweight, determine counterweight and be fixed on dead axle, dynamic counterweight moves counterweight and be provided with one with determining counterweight by being connected axis connection Individual alignment pin, it is sleeved on the torsion spring in connecting shaft and clamps between dead axle and alignment pin.