RU77796U1 - CONE VIBRATION CRUSHER WITH AN ELASTIC RECTANGULAR SHAFT - Google Patents

Abstract

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

The known cone crusher has a round continuous section of an elastic shaft, and the proposed one is rectangular. This made it possible to reduce the energy consumption of the crusher by 1.85 times, material consumption - by 1.31 times.

Description

Vibratory cone crusher with an elastic rectangular shaft belongs to the grinding technique 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 deformation of bending and torsion, and it is also metal-intensive.

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 and metal consumption.

The technical result is achieved by the fact that the cone vibratory crusher with an elastic rectangular shaft, 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 the vertical shaft of the drive from the electric motor, an 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 to the hollow drive shaft fixed in angular contact bearings, which connects it directly to the motor shaft, the elastic shaft is made of rectangular cross section, the length of which is equal to the diameter of the round shaft, i.e. two radii (2r), and the width is (1.1 ... 1.3) r.

The rectangular cross-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 frame 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 rectangular cross-section (Fig. 2 ), is rigidly connected at the bottom with a hollow shaft 9, which is fixed in angular contact bearings 10. Above the bearing assembly, a 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.171-172, formula 9.19) showed that as a result of replacing a round solid shaft with a rectangular shaft (figure 3), the torque, and, consequently, the energy expended is reduced by 1.85 times. The metal consumption is reduced by 1.31 times. As the thickness of the rectangular section increases, 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 conical vibratory crusher with an elastic rectangular 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 the vertical drive shaft from the electric motor, imbalance, impeller and discharge pipe, the shaft is made with the possibility of movement 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, to which connects it directly to the motor shaft, characterized in that the elastic shaft is made of rectangular cross section, the length of which is equal to the diameter of the round shaft, i.e. two radii (2r), and the width (1.1 ÷ 1.3) r.