RU78691U1 - CONE VIBRATION CRUSHER WITH ELASTIC SHAFT - Google Patents

Abstract

A vibratory cone crusher with an elastic shaft, comprising a bed with an outer cone, in which an inner cone is placed, made with a shank mated by a spherical bearing with a blind sleeve rigidly mounted on a vertical drive shaft from an electric motor, an imbalance, an impeller and a discharge pipe, the shaft is made with the ability to move together with the inner cone, and the lower end of the elastic shaft is rigidly fixed in the hollow drive shaft, fixed in angular contact bearings, which connect t it directly with the motor shaft, characterized in that the elastic shaft is made in the form of a symmetrical hollow tube with a square cross section of the external and internal contours and the geometry of the described external contour around the circular cross section of the shaft, and the size of the side of the inner square is 1.6 ... 1, 8 times the radius of the round shaft.

Description

The vibratory cone crusher with an elastic shaft belongs to the grinding equipment and can find application in the agricultural, milling, food, medical, mining and other sectors of the national economy.

Known cone inertial crusher (certificate. RF No. 30095, publ. 06/20/2003. Bull. No. 17) containing a frame with an outer cone, in which is placed an inner cone made with a shank mated by a spherical bearing with a blind sleeve, rigidly mounted on vertical shaft of the drive from the electric motor, imbalance, the impeller and the discharge pipe, the shaft is made elastic with the ability to move together with the inner cone, and the lower end of the elastic shaft is rigidly fixed in the hollow drive shaft, fixed in radially bearing bearings, which connects it directly to the motor shaft.

A disadvantage of the known crusher is that the round continuous elastic shaft of the crusher consumes a lot of energy for bending and torsion deformation.

The problem to which the utility model is directed is to reduce the potential energy of bending and torsion of the elastic shaft, i.e. reduce the energy consumption of the crusher during its operation.

The technical result is achieved by the fact that a cone vibratory crusher with an elastic shaft, comprising a bed with an outer cone, in which an inner cone is placed, made with a shank, coupled by means of a spherical bearing with a blind sleeve, rigidly mounted on the vertical shaft of the drive from the electric motor, imbalance,

the impeller and the discharge pipe, the shaft is movable together with the inner cone, and the lower end of the elastic shaft is rigidly fixed in the hollow drive shaft fixed in angular contact bearings, which connects it directly to the motor shaft, the elastic shaft is made in the form of a symmetrical hollow pipe with the square cross section of the external and internal contours and the geometry of the described external contour around the circular cross section of the shaft, and the size of the side of the inner square is 1.6 ... 1.8 times the radius to uglogo shaft.

The hollow square section of the elastic shaft of the crusher made it possible to reduce the torque and energy for its deformation, i.e. actually reduce the energy consumption of the crusher during its operation and material consumption.

Figure 1 shows a longitudinal section of the proposed crusher, figure 2 is a cross section of the shaft of the crusher, and figure 3 is a geometric comparison of the cross section of the shaft of the proposed crusher with the cross section of a round shaft.

The crusher (Fig. 1) contains a bed 1, an outer cone 2, in which an inner cone 3 is placed, made with a shank 4, conjugated by a spherical bearing 5 with an imbalance 6 through a blind sleeve 7. An elastic shaft 8 having a hollow square section (Fig. 2), at the bottom it is rigidly connected with the hollow shaft 9, which is fixed in angular contact bearings 10. Above the bearing assembly, the fan impeller 11 is rigidly fixed to the elastic shaft 8. The hollow shaft 9 is also rigidly connected to the shaft of the electric motor 12, which is vertically fixed to the frame 1 .

Crusher works as follows.

Grain components or other grinding materials enter the crushing zone between the outer 2 and inner 3 cones, where they are subjected to the destructive action of a complex of dynamic forces. The inner cone 3 makes a vibrational motion, relying on a spherical bearing 5, since the elastic shaft 8 with the imbalance 6 and the blind sleeve 7 rotates using the hollow shaft 9 fixed in the bearings 10, and the hollow shaft 9 connected to the shaft of the electric motor 12 receives him

rotation. An imbalance 6 due to the occurrence of centrifugal force acts on the inner cone 3, grinding material. The elastic shaft 8, mounted in the hollow drive shaft 9, is bent relative to the fixed cone 2. The clearance between the cones is adjusted by screwing the cone 2 into the frame 1 using a threaded connection. During rotation, the radial deviation of the imbalance 6 is ensured by the bending of the elastic shaft 8 and the corresponding movement of the inner cone 3. This is due to the spherical bearing 5. The crushed material is removed through the discharge nozzle of the frame 1 using the fan impeller 11. In addition, when transmitting torque in the shafts, torsional strain. Comparative calculations by a known method (Belyaev N.M. Resistance of materials. - M .: Nauka, 1976, p. , torque, and, consequently, the energy expended is reduced by 1.75 times. The metal consumption is reduced by 2.48 times. With other ratios of the radius of the shaft and the internal size of the pipe, for example, with an internal pipe size of 1.6 r, the torque and energy decrease by 1.34 times, and the metal consumption by 2.18 times. With increasing pipe thickness, i.e. with a decrease in the cross-sectional size of its hollow part, the substitution effect disappears. A similar effect is observed when the shafts bend.

Thus, the task of saving energy and metal proposed crusher is completed.

Claims (1)

A vibratory cone crusher with an elastic shaft, comprising a bed with an outer cone, in which an inner cone is placed, made with a shank mated by a spherical bearing with a blind sleeve rigidly mounted on a vertical drive shaft from an electric motor, an imbalance, an impeller and a discharge pipe, the shaft is made with the ability to move together with the inner cone, and the lower end of the elastic shaft is rigidly fixed in the hollow drive shaft, fixed in angular contact bearings, which connect t it directly with the motor shaft, characterized in that the elastic shaft is made in the form of a symmetrical hollow tube with a square cross section of the external and internal contours and the geometry of the described external contour around the circular cross section of the shaft, and the size of the side of the inner square is 1.6 ... 1, 8 times the radius of a round shaft.