SU916044A1 - Vibration unit for regenerating moulding mixture - Google Patents

Description

The invention relates to foundry, in particular to a device for the restoration of the molding mixture.

Closest to the proposed technical essence is a vibration unit for the restoration of the molding mixture, containing an elastically suspended working chamber with an inclined bottom section, a vibration exciter and an exhaust system [1].

The disadvantage of the installation lies in the fact that in the process of destroying the pieces of the molding material, sand particles accumulate in the working chamber, because they can leave the chamber only when they are reached. a certain level in the working chamber, which significantly reduces the intensity of abrasion of pieces of material, and, successively, and the performance of the installation.

The purpose of the invention is the intensification of the recovery process of the molding mixture and its automation.

This goal is achieved by the fact that in a vibration installation containing an elastically suspended working chamber with an inclined bottom section, vibration exciters and

2

the exhaust system, the working chamber is equipped with a hollow wall with a window and a vertical chute with a tray installed at the wall of the working chamber, and consists of two halves, each of which is inclined

5, the bottom section is provided with screens, under which inclined chutes with branch pipes are installed, and vibration exciters are installed outside, along the walls of the working chamber, in a plane passing through the center of gravity of the system.

To ensure the dynamic synchronization of the rotating vibration exciters in the hollow wall an additional load is installed.

15 The installation is equipped with a feeder, made in the form of a tray with a hopper, one end of which is connected to the working chamber by means of a swivel, and the other is connected by an inclined spring with a fixed base.

A probe with an exhaust hood connected to the working chamber by means of elastic elements is installed above the working chamber.

. FIG. 1 shows the installation, the cross section; in fig. 2 - the same with shots916044

four

With the probe in FIG. 3 - section A — A in FIG. one.

Vibration installation contains 1 working chamber consisting of two halves, elastically mounted on a stationary base by means of elastic suspensions 2. Vibrators are mounted along the outer side walls of the working chamber by elastic sleeves 4 with engines 5. A load 6 is located in the cavity of the working chamber. Under the bottom of the halves of the working chamber are inclined chute 7 with nozzles 8 / separated from the internal cavity of the working chamber sieves 9. The cavities of the working chamber are connected by a window 10 and a vertical chute 11 with a tray 12.

For feeding the molding material 13, one of the side walls of the working chamber is provided with a feeder 14 connected at one end by means of a hinge 15 with a wall of the working chamber, and the other with an inclined spring 16 with a fixed base. A tray 17 is located under the nozzles of the inclined gutters. A probe 18 is connected above the working chamber. It is connected to the working chamber by means of elastic elements 19. The working chamber is divided by a hollow wall 20.

Vibration installation for the restoration of the molding mixture is as follows.

Engines 5 are switched on, which, through clutches 4, inform vibration exciters 3 to rotate. Placed in the hollow wall of the load 6 provides the vibration exciter in-phase and synchronous rotation, as a result of which the working chamber performs circular oscillations in a vertical plane, as the most optimal for the destruction of the molding material. Placed in the hopper of the feeder 14 molding material 13 is continuously fed into the working chamber, under the action of vibration spreads along the chamber. Under the action of vibration, the molding material partially collapses and sand is sifted through a sieve 9 onto an inclined chute 7, moving along it, pouring it out through the nozzle 8 onto the tray 17. In view of the fact that the molding material is continuously fed into the working chamber, in the left half 1 at the end wall excess molding material, which under the action of vibration is trying to evenly distribute along the working chamber. Due to the fact that the pressure of the molding material during the process of its vibration on the walls is different (on the right side walls the pressure is greater than on the left ones), reaching the hollow wall 20, the material flows through the 10 c window and moves along the right half to the front end wall. Under the influence

vibration finally on the destroyed molding material along the vertical chute 11 rises up and along the tray 12 is poured again into the left half of the working chamber. Thus, the molding material is continuously circulating in a closed spiral path (Fig. 2), intensive wear. Wear products of the molding material, the molding mixture is continuously removed through a sieve 9 from the inner cavity of the working chamber, thereby ensuring the most intensive mixing, and, consequently, abrasion of the molding material. Suspended dust particles through the probe 18 are removed for cleaning, thus protecting the surrounding area from dusting.

The proposed vibration unit allows to significantly intensify the process of restoration of the molding mixture and automate it.

Claims (4)

Claim 1. Vibration installation for the restoration of the molding mixture containing an elastically suspended working chamber with an inclined bottom section, vibration exciters and an exhaust system, characterized in that, in order to intensify the process and automate it, the working chamber is provided with a hollow wall with a window and a vertical chute with a tray, installed at the wall of the working chamber, and made of two halves, in each of which an inclined bottom section is provided with sieves under which inclined troughs with nozzles are installed, 4 vibration exciters are installed Ruzhi along the walls of the working chamber in a plane passing through the center of gravity of the system. 2. Vibration installation in π. 1, characterized in that, for the purpose of dynamic synchronization of exciters, an additional load is installed in the hollow wall. 3. Vibration installation in π. 1, which differs in that, in order to automate the supply of the spent mixture to the working chamber, it is equipped with a feeder, made in the form of a tray with a bunker, one end of which is connected to the working chamber by means of a hinged connection, and the other is connected by an inclined spring with a fixed base. 4. Vibration installation in π. 1, characterized in that the exhaust system is connected to the working chamber by elastic elements.