RU2759864C1 - Vibrating jaw crusher for grinding grain material - Google Patents

Abstract

FIELD: mechanical engineering.SUBSTANCE: invention relates to jaw crushers, in particular to vibrating jaw crushers, and can be used for grinding grain material. The crusher contains a housing 1 with spring supports 2. On the housing 1, active jaw plates 4 with unbalanced vibration exciters 5 and pendulum passive jaw plates 6 placed between them, the number of which is odd, are suspended on torsion axes 3. The pendulum passive jaw plates 6 in the vertical section are made in the form of a trapezoid facing down with a large base 7, or in the form of a triangle facing down with its base. Removable plates 8 with vertical riffles 9 are placed on both sides of the pendulum passive jaw plates 6 and the inner sides of the active jaw plates 4.The pitch of the riffles 9 is smaller than the size of the crushed particles. A loading hopper 10 of grain material is placed on the housing 1. Each of the even jaw plates is made with the possibility of changing its position in height relative to the odd jaw plates by means of screw regulators 12 installed in the pendulum mechanism 11.EFFECT: crusher provides increased productivity and reduced energy costs.3 cl, 4 dwg

Description

The invention relates to jaw crushers, in particular to vibrating jaw crushers, and can be used for crushing grain material.

Known vibration-jaw crusher containing spring supports, a housing to which are suspended active crushing jaws, drive vibration exciters, a hopper for material (US 4756483, 07.12.1988). The disadvantage of this design is its complexity, as a result of which there is a frequent failure of the synchronizing shafts and the gear pair of the vibration drive, which does not ensure the reliability of the crusher.

Known vibration-jaw crusher containing spring supports, a housing to which are suspended active crushing jaws, drive vibration exciters, a hopper (RU 2228221, 05/10/2004). The disadvantage of this design is its low productivity when used for crushing grain crops.

The closest in technical essence is a vibration-jaw crusher containing spring supports, a housing to which active crushing jaws are suspended, drive vibration exciters, a loading hopper (https://spbspurt.com/p23/index.html).

Its disadvantage, as well as the previous one, is the impossibility of achieving high productivity on grain material at low energy costs.

The problem solved by the present invention is to increase the productivity of the crusher while reducing energy costs.

The technical essence is achieved by the fact that in addition to active cheeks, on which vibration exciters are installed, the device uses passive cheeks.

The present problem is solved by the fact that a vibration-jaw crusher for grinding grain material, containing spring supports, a housing to which active crushing jaws with removable riffle plates are suspended on torsion axles, drive vibration exciters, a loading hopper, additionally contains an odd number of pendulum passive jaws with removable riffle plates placed between the active cheeks, riffles on removable plates are made in the vertical direction and have a step less than the size of the particles to be ground, while each of the even cheeks is made with the possibility of changing its position in height relative to the odd cheeks. Pendulum passive cheeks in vertical section are made in the form of a trapezoid with a large base facing downward or a triangle with its base facing downward.

FIG. 1 is a general diagram of the crusher.

FIG. 2 is a diagram of a crusher with an increased jaw gap.

FIG. 3 is a diagram of a plate with grooves.

Figure 4 shows a view of a plate with grooves along A-A.

The crusher consists of a body 1 with spring supports 2. On the body 1, on torsion axles 3, active crushing cheeks 4 with unbalanced vibration exciters 5 and pendulum passive cheeks 6 placed between them are suspended, the number of which is odd. Pendulum passive cheeks in vertical section are made in the form of a trapezoid, facing downward with a large base 7, or in the form of a triangle facing downward with its base. On both lateral sides of the passive pendulum cheeks and the inner sides of the active cheeks 4 there are removable plates 8 with vertical grooves 9. The groove pitch 9 is less than the size of the particles to be ground. On the housing 1 there is a loading hopper 10 of grain material. Each of the even cheeks is made (for the possibility of changing the crushing size of grain material) with the possibility of changing its position in height relative to the odd cheeks. For this, in the pendulum mechanism 11 there are screw adjusters 12 of their position.

The crusher works as follows. Grain material from the hopper 10 flows out into the gaps between the active 4 and passive 6 cheeks, as well as into the gaps between the passive cheeks 6, gets under the influence of plates 8 with vertically arranged grooves 9. Due to the low inertia of the passive cheeks 6 crushing force from the active cheeks 4 is transmitted through the crushed material along the chain of all passive cheeks. This is also facilitated by the self-synchronization of vibration exciters, leading to a coordinated simultaneous compression and unclenching of the active cheeks.

As a result, the grain gradually moves downward, disintegrating in the decreasing gaps between the cheeks to the minimum required particle size. The material falls down both due to gravity and vibration. Otherwise, the material is shaken off and moves towards the exit between the cheeks, which in their vertical section have the shape of a trapezoid facing downward with a large base 7, or a triangle with the base facing downward (not shown in the figure). To change the degree of crushing of grain material, even (of the total number of active and passive) cheeks due to screw adjusters 12 located in the pendulum mechanism 11 are raised or lowered compared to the odd cheeks, thereby changing the gap between their ends and, accordingly, the degree grinding grain.

Claims (3)

1. Vibration-jaw crusher for crushing grain material, containing spring supports, a housing to which active crushing jaws with removable corrugated plates are suspended on torsion axles, drive vibration exciters, a loading hopper, characterized in that it additionally contains an odd number of pendulum passive jaws with by removable grooved plates placed between the active cheeks, the riffles on the removable plates are made in the vertical direction and have a step less than the size of the particles to be crushed, while each of the even cheeks is made with the possibility of changing its position in height relative to the odd cheeks. 2. The vibrating-jaw crusher according to claim 1, characterized in that the passive pendulum jaws in vertical section are made in the form of a trapezoid, facing downward with a large base. 3. The vibrating jaw crusher according to claim 1, characterized in that the pendulum passive cheeks in the vertical section are made in the form of a triangle with the base facing downward.

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