SU1685551A1 - Device for grading of materials - Google Patents

Description

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(21) 4712934/03 (22) 07.03.89 (46) 10.23.91. Bul №39

(71) Research and design institute of mechanization and electrification of agriculture of the non-chernozem zone of the RSFSR

(72) A.G. Shkl ev, N.V. Shaburov and A.I. Klinova

(53) 621.928.2 (088.8) (56) USSR Copyright Certificate No. 400381, cl. B 07 B 1/22/1973. USSR Author's Certificate No. 483104, cl. B 07 B 13/12, 1973.

(54) DEVICE FOR CALIBRATION MA-T (RIALS

(57) The invention relates to agriculture, namely in the calibration of round and elliptical fruits, vegetables and root and tuber crops according to size. The purpose of the invention is to improve device performance and calibration accuracy. The device contains a loading device 2, receivers of the recalibrated fruit and a calibrating drum in the form of a cylindrical spring (CPU) 3, the free ends of which are fixed on the rings (K) 6 and 7. Moreover, K 7 can move along the axis

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CPU 3. On the K 7 side, there is a device for adjusting the pitch of the spring coils, made in the form of adjusting screws 9, installed so that they can interact with the outer end surface of K 7 by means of pressure rollers (P) 8. The second K 6 is installed with the ability to interact with the support P 10. Quantity

The invention relates to agriculture, in particular to the calibration of round and ellipsoidal fruits, vegetables and root and tuber crops according to size.

The purpose of the invention is to improve device performance and calibration accuracy.

1 shows a schematic of a device for calibrating fruits; Fig 2 - section aa in Fig.1.

The device comprises a frame 1 on which the loading conveyor 2 and the calibrating drum 3 are installed in the form of a cylindrical steel spring installed in the fixing rollers 4 and 5 rotatably around its axis, the rollers 5 being the leading ones and the spring supported on them by all turns. The free ends of the spring are fixed on the rings 6 and 7, and the ring 6 is stationary, and the ring 7 has the ability to move in the axial direction of the spring 3 under the action of the pressure rollers 8 and screws 9, the number of pairs of which must be at least three, which ensures a uniform effect on the rings . The rollers 8 act on the outer end surface of the ring 7, and on the opposite side the ring 6 rests with its outer end surface on the support rollers 10. The screws are mounted on the frame with the possibility of axial movement from the star nuts 11, which are rotated by means of a chain gear from the drive sprocket 12 In order for the screws 9 not to rotate around their axis when the star nuts 11 are rotated, their stem outside the threaded part has, for example, a square section and moves axially in square holes p and we. The device is also equipped with conveyors 13 and 14 and a tuber ejector 15, the conveyor 13 and the ejector 15 in the form of a rubberized roller placed inside the spring working body 3.

The device works as follows.

Fruits or vegetables are fed to the loading conveyor 2, which transports them to a calibrating drum 3, driven

R 8 and 10 must be at least three. Fruits and vegetables are placed on the outside of the CPU 3. The small tubers pass inside the CPU 3 through the slots, and the tubers are carried on the turns of the CPU on its other side. When another batch of fruit arrives, K 7 is moved with the help of screws 9. In this case, the adjustment can be carried out on the go. 2 Il.

rotation of the locking rollers A and 5, and creates a certain support, placing the fruit at the spring in several layers. When the spring 3 rotates, the tubers are oriented into the slot and, if the size of the fruit is smaller than the gap between the adjacent coils of the spring, they pass into the slot and fall onto the remote conveyor 13. Tubers, which are larger than the slot, are carried out on the spring coils to the conveyor 14 gathering fraction. Thus, the spring working body divides the flow into two fractions - the passage (B) and the drain (C). The fruits that are stuck between the coils are pushed onto the conveyor 14 by a roller ejector of 15 tubers.

To change the size of the calibrating gap when another batch (variety) of fruit arrives, move the spring ring 7 7,

using screws 9, rotate the sprocket nuts 11, and this adjustment can be carried out on the go. In this case, all the turns of the spring 3 approach or move away from each other by the same distance. Coating spring coils with a material with a low coefficient of friction, such as polyurethane, helps to reduce damage to fruits. This also contributes to the elastic properties of the coils.

springs transverse to the axis of the spring direction,

Claims (1)

Claims An apparatus for calibrating materials, including a rotatably mounted calibrating drum in the form of a cylindrical spring, the free ends of which are fixed on the rings, one of which is installed with the possibility;:; Ioci is moving along the spring axis, and the other is fixed, a device for adjusting the pitch of the spring coils, a loading device and receivers of separation products, characterized in that, in order to improve the device performance and calibration accuracy, the device for adjusting the pitch of the spring coils is made in the form of adjustment screws installed with the possibility of interaction through the pressure rollers with ± A FIG. 2