SU1440738A1 - Feeder of rotor powder tabletting machine - Google Patents

Abstract

This invention relates to machines for tabletting bulk materials. The purpose of the invention is to improve dosing accuracy and productivity. The feeder is made of a four-chamber. To supply the powder to the four-chamber feeder, the flow bin is used. The nozzle 6 of which enters the cup 7 mounted above the chute 8. The vibrator 9 is mounted on the base 10. A vibrating frame 11 is attached to it. the filling part of the feeder with the metering part is with a buncher 13, which through the drive 14 receives rotation from the pushers. The drive is located on Kryshka 15, located on housing 16. It also has a knife 17 and a knife 18 mounted on a knife. A knife 19, fortified by T; on the base 10. For receiving nopoiuxa, on the housing 16 an inclined wall 20 is provided, forming a groove 21. In the vibration frame 11, there are waveguides 22 mounted in the windows 23. 2 Zo ffly, 3 sludge. "9 (L with:

Description

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The invention relates to a metalworking structure, in particular, to machines for tabletting viscous materials, and can be used in chemical, pharmaceutical, electronic, chemical and other industries.

The purpose of the invention is to improve the dosing accuracy and productivity of a rotary tablet machine.

Figure 1 shows a rotary tablet machine with a feeder, general view; figure 2 - section aa in figure 1; FIGURE t section bb in FIG.

The rotary tablet machine contains a bed, a rotor 1 with matrices 2, lower 3 and upper 4 punches arranged together with pushers 5 о placed in it. To feed the powder into the feeder, it is the feed bin 6, the nozzle of which enters the glass 7, mounted above tray 8 o The vibrator 9 of the feeder is mounted on the base 10, and a vibrating frame 11 is attached to it.

The neck 12 connects the filling part of the feeder with the metering part with the agitator 13, which through the drive 14 receives rotation from the pushers 5. The drive is located on the cap 15 located on the feeder housing 16, on which the metering knife 17. and the powder return blade 18 are mounted. A knife 19 is provided for discharging the tablet, fortified on the base 10. A powder intake on the housing 16 is provided.

inclined wall 20 of the groove 21 o V vib

The waveform frame 11 has waveguides 22 mounted in windows 23. Gearbox 24 has a pair of gears.

The rotary tablet machine feeder operates as follows.

The powder from the bunker flows by gravity into the nozzle of the bunker 6, which enters the cup 7, and then goes along the chute 8 to the inclined wall 20, and it gets into the first (receiving) chamber 21, Hence the waveguides 22 powder vibrating with the frame 11. through the windows 23 it is directed to the second (filling chamber, into the vibrating frame 11 and fills the dies 2. Excess powder is carried by the rotor into the throat 12 and then falls under the blades

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13. The neck 12 is the third (connecting) chamber between the vibrating frame, the filling matrix, and the fourth (metering) chamber

The vibratory frame imposes a vibrational field on the powder, destroying the bond between its particles, which increases the intensity of filling the matrix. The agitator 13 in the metering part, in which the punches 3 are raised to a predetermined level in the matrix, which determines the volume of the dose of the future tablet, cuts off the excess powder. The last blade of the agitator is thrown into the neck. It cannot be received by the virage frame, the walls of which discard the powder. A gap of 1.2-1.8 steps of the rotor 1 between the second and fourth chambers is provided for this, in the third chamber the powder supplements the matrix quietly, without vibrating or mixing-blade impact .

Thus, the connective chamber is a compensator in which u can accumulate. Excessive powder is gradually consumed. Matrices in the neck can get unfilled. The powder accumulated in the throat is consumed as it is filled. If there were no throat, the dosing part gradually overfilled and jammed the agitator.

The powder is carried out through the gaps by the rotor under the knife 17 and, turning, falls under the knife 18, which returns the powder through the groove to the filling vibration frame 11 o This completes the powder circuit.

The powder that filled the matrices undergoes a complete cycle of dosing and tabletting through the copier system, as a result of which the prepared tablet is pushed under the knife 19, from which it goes into the receiving container. The opposite direction of rotation of the rotor and agitator is provided by the operation of the gearbox 24 with a pair of spur gears.

Compared with the known paddle feeders, the use of a rotary tablet machine with a four-chamber feeder will increase productivity by 35-60%. At the same time

the dosage accuracy and quality of the tablets are significantly improved.

Claims (2)

1. A rotary tablet machine feeder containing a vibrating filling chamber placed in a housing and a metering chamber in the form of a blade agitator with a rotation drive thereof, characterized in that in order to improve metering accuracy and productivity, it is equipped with a receiving chamber, designed as a groove in a housing with an inclined wall, as well as a chamber for free filling of powder, located between the filling and dispensing chambers, while the vibrating filling chamber is made in the form of a vibrating frame with windows and waveguides placed in the latter for feeding powder from the receiving chamber to the filling chamber 2. The feeder according to claim 1, characterized in that the free filling chamber is made in the form of a neck 1.2-1.8 steps in length of the rotor of the machine. Zero feeder PoP1, characterized in that it is supplied mounted on the rotation drive of the agitator gearbox of two cylindrical gears for its rotation in the direction of rotation of the rotor of the machine. A (. Unzipped) Fie.2 Bb (fJoSepHtj / no) YU