KR101999632B1 - Large Capacity Pellet Making Equipment - Google Patents

Abstract

In detail, a large-sized motor for supplying a driving force is required to form a device for forming a large-capacity pellet. However, a direct driving method in which the load is directly connected to the load side requires a shaft, a bearing, A bevel helical speed reducer, and a fluid coupling capable of reducing start-up impact and drive torque in order to solve the problem.

Description

[0001] Large Capacity Pellet Making Equipment [0002]

More particularly, the present invention relates to a large-capacity pellet molding apparatus, and more particularly, to a large-capacity pellet molding apparatus, A bevel helical gear reducer and a fluid coupling capable of reducing start-up shock and drive torque in order to solve the problems of shaft, bearing, and reduction gear. The present invention provides a large-capacity pellet molding apparatus which is capable of producing a compressive force by arranging a single-stage compression molding mill and forming an extruded plate to be formed in a large size to enable mass production, thereby minimizing a load when pelletizing various raw materials. And the like.

Conventionally used pellets are produced by using fine roast or rice bran (rice bran) and soybean meal of 200 mesh or more made of cereals in case of feed or sea food, and in case of heating fuel, such as sawdust, coco peat, palm, sugar cane In case of oil cake or organic fertilizer, it is produced by using food cake (residue) or fermented feed, and it is manufactured by using various raw materials such as plastic raw materials and various chemicals.

In order to make the pellets, the raw material particles must be in powder form, the roughness (grain size) should be 40 mesh or more, that is, the level of rough sawdust, 14% to 17% To 50%, a viscosity (binding force), and it is known that it is difficult to make the raw material hardened at 50 ° C or more without being dissolved at 100 ° C or less.

The conventional pellet molding apparatus includes an upper case capable of being disassembled and assembled, a lower case having a discharge port, and a disc-shaped pellet die in which a plurality of extrusion holes are densely packed, A hopper is mounted on a molding apparatus in which a pair of mills are rotatably mounted and a motor is directly connected to a lower end of a spindle connected to a main shaft which rotates a pushing mechanism through which the mill is mounted, have.

However, the above-described conventional pellet molding apparatus necessarily follows the following problems.

In other words, a large motor for supplying driving force should be applied when a device for forming a large-capacity pellet is formed by directly connecting the motor. However, the direct drive system, which is directly connected to the load side, requires a shaft, a bearing, There is a problem that breakage or the like may occur.

In addition, production of pellets is limited by producing a pellet while rotating a pair of mills.

In addition, there is a problem such as an increase in the oil temperature of the speed reducer and the like in continuous operation for large capacity processing.

Further, there is a problem that the pellet formation efficiency due to scattering of the raw material of 40 mesh or less supplied into the molding apparatus is reduced.

Meanwhile, a number of known documents for addressing the above problems are as follows.

In Korean Patent No. 10-1445985 (Apr. 20, 2014), an extrusion die in which a plurality of extrusion holes are densely packed is mounted on the upper end of a lower case having an outlet, and an extrusion mechanism that rotates by a spindle through the center of the extrusion die is mounted And an upper case having a hopper mounted on an upper end of the upper case is seated on and fixed to an upper end of the lower case so as to surround the extrusion mechanism and a deceleration motor is connected in series to the lower end of the spindle, The raw material transfer device is equipped with a motor and a chain wheel in a cylindrical transfer pipe having a discharge port at a lower end of the hopper and a hopper at a rear end thereof and a screw for transferring the raw material while rotating by a chain, In the pellet forming apparatus, a post is provided on the lower rear side of the raw material conveying device, And two or four passageways are formed on the outer circumferential surface of the upper case, the passageway is communicated with the inside of the upper case and the passageway is communicated with the outside The pellet forming apparatus comprising: However, a pellet device in which a double mill is formed has not been disclosed.

In Korean Patent Publication No. 2010-0059141 (June 4, 2010), a pressurizing roller is disposed in an inner pressurizing chamber of a cylindrical die having an extrusion hole, a cutter is disposed on an outer circumferential surface of the cylindrical die, and a cylindrical die Wherein a pressing roller is mounted to one end of a fixing shaft which is fitted to a hollow portion of the main shaft so as to be relatively rotatable with respect to the fixing shaft, the gear of the main shaft is interlocked with the gear of the electric shaft, Discloses a compost pellet molding apparatus in which an electric shaft is connected to a motor by a coupling. However, there has not been disclosed a pellet device in which a structure is made rigid and a hollow main shaft suitable for power transmission is applied.

Korean Unexamined Patent Publication No. 2002-0034653 (May, 2002) discloses a method for producing steelmaking dust and PP from a steelmaking process, placing the remaining pitch and wax into a kneader to which heat is applied, rotating the stirring wing to mix the raw materials, A pellet molding apparatus for producing a regenerable pellet through a pellet molding apparatus in which cold air is supplied after cutting the pellet into an appropriate size with a cutting device while extruding it with an extruder. However, a pellet device to which a zero speed sensor is applied for sensing the overload of the drive shaft to prevent malfunction of the device has not been disclosed.

Korean Patent Laid-Open Publication No. 2011-0098498 (Sep. 1, 2011) discloses a molding machine including a transfer unit installed on a frame corresponding to an outlet side of an extruder through which a molding is discharged and transferring the molding, a frame provided on a frame corresponding to an upper portion of the transfer unit, A cutter provided with a plurality of cutters for cutting a molded product to be fed through the cutter, and a driving part for driving the feeder and the cutter. However, a pellet device in which a double mill is formed has not been disclosed.

Therefore, in order to solve the above problems, it is possible to reduce the start-up impact and drive torque of the shaft, the bevel helical gear reducer, No large-capacity pellet molding apparatus including fluid coupling has been disclosed.

Korean Patent No. 10-1445985 (Apr. 20, 2014) Korean Patent Publication No. 2010-0059141 (2010.06.04) Korean Patent Publication No. 2002-0034653 (May, 2002) Korea Patent Publication No. 2011-0098498 (2011.09.01.)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the related art, and in particular, a large motor for supplying driving force should be applied in a device for forming a pellet with a large capacity, but a direct driving method, And a large-capacity pellet including a hollow main shaft, a bevel helical gear reducer, and a fluid coupling capable of reducing start-up shock and drive torque in order to solve the problems of shaft, bearing, It is an object of the present invention to provide a large-capacity pellet molding apparatus capable of forming a stable extrusion by minimizing a load when pelletizing various raw materials by providing a molding apparatus.

In order to solve the above-mentioned problems, the present invention provides a refrigerator comprising: a casing having a discharge port at a lower side thereof and a supply part formed at an upper side thereof; A main shaft formed through the lower center portion of the casing; A pressing process in which a plurality of extrusion holes are formed in the main shaft; A mill rotating in contact with one surface of the platen; A cutter formed on the other surface of the pressure plate and cutting the pellet discharged through the pressure plate while rotating; A speed reducer connected to the main shaft in a vertical direction to adjust the speed; And a motor connected to the speed reducer in a horizontal direction to transmit power to the main shaft, wherein the main shaft is connected to the inside of the reducer without a coupling for power transmission, The present invention also provides a large-capacity pellet molding apparatus.

Also, the imaginary gear reducer may be a speed reducer including a bevel gear and a herical gear.

Further, between the speed reducer and the motor, a rotary vane is rotated inside the coupling by rotation of the motor, and a fluid, which rotates the rotary vane and transmits power to the speed reducer, Coupling may be formed.

In addition, the rotation of the main shaft can be stopped by the fluid coupling when a sudden high load is generated in the main shaft, which is rotated by the power transmitted through the base motor, the fluid coupling, and the decelerator.

The controller may further include a zero speed sensor for detecting rotation of the main shaft to stop the rotation of the main shaft when the high load is generated, and stopping the operation of the motor.

The apparatus may further include a cooling device for periodically cooling the oil filled in the speed reducer and / or the fluid coupling during operation of the speed reducer and / or the fluid coupling.

In addition, the mill may be configured with a pair of inner and outer mills for large capacity processing.

In addition, a scraper may be further provided on one side of the connecting portion of the pair of outer mills.

In addition, the inner extrusion hole and the outer extrusion hole in contact with the inner mill and the outer mill can adjust the size of the hole according to a predetermined pellet condition.

In addition, the ratio of the inner extrusion hole in contact with the inner mill and the outer mill and the diameter of the press-feeding inlet Dpin to the diameter of the press-discharge outlet Dpout of the outer extrusion may be 1 to 0.5.

The large-capacity pellet molding apparatus according to the present invention configured as described above according to the present invention is capable of preventing breakage of the main shaft upon overload due to direct drive of the main shaft and motor, preventing overload and extending the life of the machine, And it is effective to increase the safety and productivity according to the production of pellets.

Further, there is an effect that the bearing of the main shaft and the reducer and the damage of the reducer gear can be prevented.

Further, there is an effect that the operation of the motor can be stopped by detecting the rotation of the main shaft by the zero speed sensor.

In addition, it is possible to obtain a relatively high pellet production amount in the same pellet production area with the inner mill and the outer mill structure.

Further, there is an effect that pellets of various sizes can be obtained through simultaneous operation with the constitution of the inner extrusion hole and the outer extrusion hole.

In addition, there is an effect that stable rotation operation and damage of bearings can be prevented by a hollow main shaft configuration.

Further, it is possible to continuously recover the fuel scattered by the structure of the recovery device, thereby reducing the amount of pellets produced and the loss rate.

In addition, a smooth discharge effect of the pellets produced by the constitution of the inclined discharge device can be obtained.

In addition, the scraper configuration scrapes off the raw material adhering to the inner wall of the press-rolling, thereby minimizing the operating load of the mill, thereby achieving more stable production.

Further, power transmission can be performed in a state where the motor is horizontally laid down by the bevel gear, which leads to the miniaturization and compactness of the pellet molding apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a compression molding apparatus for a large capacity pellet molding apparatus according to an embodiment of the present invention. FIG.
2 is a longitudinal sectional view of a large capacity pellet molding apparatus showing one embodiment of the present invention.
3 is a drawing of a molding apparatus showing an embodiment of the present invention.
4 is a view of a hollow main spindle according to an embodiment of the present invention.
5 is a cross-sectional view of a press-feeding inlet and an outlet according to an embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described herein are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention, so that there are various equivalents and modifications that can be substituted at the time of the present application It should be understood.

The present invention can equip the raw material supply by mounting a raw material transfer device (not shown) on the upper part of the pellet forming device. In addition, it is possible to disassemble and replace the upper case of the molding apparatus constituting the extrusion apparatus, the parts such as the mill and the press, and the like.

Further, the upper case of the molding apparatus is provided with two or more scattered raw material outlets, and the raw material is pushed into the extrusion hole of the press-discharge hole while rotating the mill in the case, and the fuel scattered when extruded is recovered It is possible to smoothly remove and discharge the generated pressure and heat, thereby enhancing the productivity and merchantability of the pellet.

Further, in order to apply rotational force to the mill and / or the cutter, a fluid coupling is formed between the spindle connected to the hollow main shaft, the motor and the bevel helical reducer, and connected to the bevel gear and the helical gear, Thereby preventing damage to the constituent devices.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects,

The large-capacity pellet molding machine must be driven by a large-sized motor. In the direct drive system that connects the motor directly to the load side, a sudden impact torque (torque) is generated at the start of the motor. . Therefore, direct starting of large motors is a cause of shaft breakage, bearing damage, breakage of gear reducer gear, and a rotary shock absorber that absorbs start up shock and drive torque is necessary.

Fluid coupling is used for the coupling connected between the motor output shaft and the reducer input shaft according to the present invention. In the fluid coupling, when the motor is started, the rotating blades are rotated inside the pulleys by the rotation of the motor, and the fluid (working fluid) inside the coupling is rotated by the rotation of the rotating blades. As the fluid rotates at a high speed, it has a large rotational force, and when it is above a certain rotational force, a rotational force is transmitted to a rotating blade in the opposite direction. When the rotational force acts on a pressure higher than a certain level, do. Therefore, the fluid coupling absorbs the impact load at the start of the motor, and the motor rapidly increases in the number of revolutions after startup, reaching the original number of revolutions (1800 RPM for a four-pole motor) within a few seconds, When transmitted to the load side, the number of revolutions is gradually increased, so smooth rotation can be transmitted without impact. In addition, if overload is applied to the load side over the rotational transfer force (torque) by the fluid, the fluid coupling itself can idle without impact and can protect the load side device and the motor. And the speed is gradually reduced even when the vehicle is stopped.

In a conventional pellet molding apparatus, a motor and a speed reducer are directly connected without such a rotary shock absorber, and a chain is broken when an overload is applied while being connected by a weak chain between a reducer output shaft and a load side rotary shaft. The damage of the high speed rotating chain can protect the drive motor under the impact load, but it can cause another problem such as safety accident due to the breakage of the chain and the time to replace the broken chain And eventually the whole plant must stop operating.

An extrusion plate in which a plurality of extrusion holes are densely packed is mounted on an upper end of a lower case of a molding apparatus having an outlet, and a mill which rotates by means of a spindle is mounted through the press center.

The mill may be constituted by an outer mill and an inner mill, and the extrusion hole may be composed of an inner extrusion hole and an outer extrusion hole.

In the present invention, two mills are formed in pairs and each position is formed to be short and long so that the positions for compressing the pellet die are different from one another. Respectively. In other words, the position where the two outer mills are driven and the position where the inner two mills are driven are different from each other, so that the two mills can double the production amount so that the large capacity can be processed

In addition, a scraper may be formed on one side of the drive shaft of the outer mill.

The upper case having a hopper mounted on the upper end of the molding device is seated and fixed on the upper end of the lower case to constitute a molding device, a hollow main shaft is connected to the lower end of the spindle, and a bevel helical decelerator, The raw material can be pelletized in a uniform amount and at a uniform pressure in the molding apparatus.

5 is a cross-sectional view of a press-feeding inlet and an outlet according to an embodiment of the present invention. A pellet mold of a press-forming die may be formed so that the diameter Dpin of the discharge port is larger than the diameter Dpin of the discharge port of the press-forming die, and a rounding process may be performed on the discharge port side to form a diameter difference between the discharge port and the discharge port. It is possible to control the pellet density and the easy discharge of the pellets formed through the difference in diameters of the inlet and outlet. It is obvious that the inlet and outlet of the press-molding can be variably designed according to the input amount and requirements of the transportation, storage and use of the pellets. It is possible to form inlets and outlets of various diameters, preferably for a single platen. The ratio of the diameter of the platen inlet to the diameter (Dpin) to the diameter of the platen outlet (Dpout) may be 1 to 0.5. Appropriate pellets can not be formed beyond this ratio.

It transmits power to the main shaft connected to the spindle of the pellet molding machine through the motor and fluid coupling through the reducer and smoothly operates the pellet molding device. However, if the raw material is not shattered (foreign matter, When the pellet molding machine is subjected to a strong load, the safety action of the fluid coupling causes the machine to stop and the motor to continue to rotate. It is necessary to take the following measures, such as stopping the motor that supplies power to the molding apparatus, sending a warning alarm to the operator by detecting this.

A zero speed sensor is a sensor to sense this. A target plate (Taget plate) is installed on the main shaft. When the rotation stops and the number of revolutions is reduced to a predetermined value or less, .

The number of revolutions may be 80 rpm to 120 rpm. It is obvious that the number of revolutions is the number of revolutions of the mill necessary for pelletizing the amount of the raw material to be supplied. Preferably 90 rpm to 100 rpm. If the number of revolutions is lower or higher than the above range of rotation, smooth pellet production can not be performed, and the components of the apparatus can be damaged.

The zero speed sensor can also be used as an RPM meter to detect and display the rotational speed of the main shaft.

In the raw material transfer apparatus, a discharge port is provided at the lower end of the cylindrical transfer pipe, a hopper is installed at the rear upper portion, a screw is inserted therein, and the screw is rotated by the drive device, It can feed and feed at one speed.

It is obvious that the upper and lower cases of the molding apparatus are designed to be easy to disassemble and assemble for the replacement of the pressure plate by abrasion and the cleaning of the molding apparatus. In addition, by using a raw material supply hopper structure on the upper part, a chain block is installed to facilitate the disassembly and assembly.

The motor shall be installed horizontally and the main shaft of the molding machine shall be installed vertically. Therefore, it is obvious that the connection between the motor and the main shaft requires a device capable of connecting in a perpendicular direction.

As a connection technology, Khal of Germany has connected a worm gear reducer for perpendicular connection of the molding machine. Worm gears are divided into worms and gears, and worms use the principle of screw. Worms are made of materials with relatively low strength (bronze, brass, etc.) due to their fabrication and operation characteristics. They are mainly used for mechanical devices with a large deceleration rate and low transmission horsepower due to the principle of power transmission. It is relatively disadvantageous to transmit large power because it is weak structure and wear is severe. Therefore, the worm reducer used in the prior art has a troublesome necessity to replace the worm frequently, and it is a reality that the downtime increases due to the damage and wear of the worm.

In the present invention, a bevel helical (Bevel herbal & Herical gear) speed reducer is applied to the power transmission method. The bevel gears can be made of the same material as the general gears with abrasion resistance and impact resistance, and can transmit relatively large power. In addition, applying helical to the bevel gears (making the gears sloping and making them continuous contact) softens the power transmission and significantly increases the shock-resistant load. Also, a coupling device is needed to connect the power to the main shaft although the power transmission direction is changed in the right angle direction. In the present invention, the main shaft is connected by a hollow shaft method so that the main shaft is shortened and the main shaft is elongated without using a power transmitting coupling in the middle, and is directly connected to the inside of the reducer shaft.

When the spindle is extended to the inside of the reduction gear shaft, the bearing incorporated in the reduction gear also plays a role of supporting the spindle in addition to the bearing supporting the spindle, so that the spindle can be operated more stably. In addition, since there is no coupling coupling in the middle, the power can be transmitted directly, the shaft is shortened, the torsional force from the coupling coupling is much less, and the space can also be made compact.

Therefore, the problem of how to transmit the power of the large motor, which is the core of the present invention, in a stable and smooth manner, and to protect the machine protecting device and the machine in case of overload, it is possible to inform the operator by alarm when the operation is stopped, .

The present invention is characterized in that a bevel helical gear is mounted on the lower end of the spindle and a fluid coupling is installed between the main motors as a power source in a horizontal state, Of course, since the load acting on the speed reducer is small, the lifetime of the motor is prolonged so that the efficiency of forming a large capacity pellet can be achieved.

A scraper may be formed on both side surfaces of the outer shaft center rotated by the spindle connected to the main shaft and an inner wall scraper may be further provided on the side surface of the outer mill for scraping raw materials adhering to the inner case wall of the upper case and pushing them to the press.

In addition, the raw materials scattered through the raw material supply portion discharge portion and the pellet production portion discharge portion formed at the upper and lower sides of the molding device can be recovered by the recovery device and re-supplied to the recovery and supply port formed in the supply port. The recovery device is not limited in its form if it can recover the raw fly ash. It may preferably be a gravity settling recovery device, more preferably a cyclone.

The exhaust port serves to remove not only the scattered dust but also the steam generated by the heat generated by the compressive force.

And a cooling device for periodically cooling the oil filled in the speed reducer during operation of the speed reducer and / or the fluid coupling. The cooling device does not limit the type of the cooling device if it can cool the oil. And may be an oil circulating type heat exchanger. And a temperature sensor capable of sensing the temperature of the oil.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, The present invention can be embodied as various types of heater covers for pipes and a method of manufacturing the same.

100: Molding device
110: outer mill
111: Outside extrusion hole
112: scraper
120: inner mill
121: Inner extrusion hole
130: cutter
140: oblique discharge device
150: Outlet
160: Press Publishing
161:
162: pressure discharge outlet
200: spindle
300: fluid coupling
400: cooling device
500: Collecting device
510: raw material supply portion discharge portion
520: Pellet production part discharge part
600: zero speed sensor
700: Bevel Helical Reducer
800: Motor

Claims (10)

A casing having an outlet at one side of the lower portion and a supply portion formed at an upper side of the casing;
A main shaft formed through the lower center portion of the casing;
A pressing process in which a plurality of extrusion holes are formed in the main shaft;
A mill rotating in contact with one surface of the platen;
A cutter formed on the other surface of the pressure plate and cutting the pellet discharged through the pressure plate while rotating;
A speed reducer connected to the main shaft in a vertical direction to adjust the speed;
And a motor connected to the speed reducer in a horizontal direction to transmit power to the main shaft,
Wherein the main shaft is hollow, which is directly connected to the inside of the speed reducer without a power transmission coupling,
The mill is comprised of a pair of inner and outer mills for high capacity processing,
Further comprising a scraper formed on one side of the connecting portion of the pair of outer mills,
An inner wall scraper for scraping raw material adhering to the inner wall of the upper case and guiding the raw material to the press-
And a recovery device for recovering the raw materials scattered through the pellet production part discharging part and the raw material supplying part discharging part formed at the upper and lower sides of the molding device.
The method according to claim 1,
Wherein the speed reducer is a speed reducer including a bevel gear and a herical gear.
The method according to claim 1,
And a fluid coupling between the speed reducer and the motor for rotating the rotary vane inside the coupling by rotation of the motor and transmitting power to the speed reducer while rotating the fluid filled in the coupling by the rotation of the rotary vane, The pellet forming apparatus comprising:
Claim 3
Wherein rotation of the main shaft is stopped by the fluid coupling when a sudden high load is generated on the main shaft through which power is transmitted and rotated through the motor, the fluid coupling, and the speed reducer.
The method of claim 4,
Further comprising a zero speed sensor for detecting the rotation of the main shaft for stopping the rotation of the main shaft or for stopping the operation of the motor when the high load is generated.
The method of claim 3,
And a cooling device for periodically cooling the oil filled in the speed reducer during operation of the speed reducer and / or the fluid coupling.
delete delete The method according to claim 1,
Wherein the inner extrusion hole and the outer extrusion hole in contact with the inner mill and the outer mill are capable of adjusting the size of the hole according to a predetermined pellet condition.
The method according to claim 1,
Wherein the ratio of the diameter of the press-feeding inlet Dpin to the diameter of the press-feeding outlet Dpout of the inner extrusion hole and the outer extrusion hole in contact with the inner mill and the outer mill is 1 to 0.5.

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