SU767492A2 - Roller for transfer mechanism - Google Patents

Description

one

The invention relates to the field of ferrous metallurgy, in particular, to furnace units with conveyor roller roller tables operating in high temperature conditions (above.

The main part of the roller furnace, limiting its working temperature, is the roller one. The quality and productivity of the furnace, as well as its efficiency, depend on the quality of the roller hearth.

Known roller transport mechanism for the main author. St. 659870, containing a barrel, in the cavity of which an insert is installed in the form of loosely laid balls and a pin. During the operation (rotation) of the roller, the balls in the inner cavity of the barrel begin to move, and the water passing through the moving layers of the tubes, intensively turbulent during their movement along the length of the barrel. As a result, cooling conditions are improved.

However, the known construction has the disadvantage of being able to lock (seize) the balls with the barrel body during operation. The locking of the balls can occur as a result of the longitudinal displacement of the individual balls into the allotment space, which leads to the immobility of the insert in this area. Longitudinal displacement of the balls is possible when the speed of the coolant (coolant) is changed, when the roller is mounted, and also when the roller is tilted in the working space of the furnace. In addition, in the process of such a design, it is difficult to control the jamming of the insert and it is almost impossible

15, which leads to a deterioration in the cooling of the barrel and its burnout at the site of seizure. Degradation of cooling occurs as a result of a change in the mechanism of interaction between the barrel, the insert and the cooling fluid of weak and focal mixing, reducing the heat removal in Mecte of the stationary contact of the ball with the surface of the barrel.

The purpose of the invention is to .- .. increase the operational reliability of the roller.

The goal is achieved by the fact that the roller is equipped with an installed 30 concentric barrel

an insert made in the form of a pipe with annular guides fixed on its outer surface between which the rolling bodies are located.

Figure 1 shows the video, Osc. second incision; in fig. 2 is the same cross section (section A-A in FIG. L)

The furnace roller conveyor roller contains a barrel 1 with a cooled cavity 2, in which the insert 3 is installed in the form of a pipe. On the outer surface of the insert 3, evenly along the length of the barrel, transverse guides 4 are installed. The transverse guides 4 are rigidly connected to the insert 3 and can be made in the form of a sleeved, perforated, tubular, etc. ring. The transverse guides 4 form an annular groove between them, in which rolling bodies are freely accommodated, for example, balls 5. Balls 5 can be solid, hollow, metal, plastic, wooden, etc. It is better to use plastic or nylon balls with a rough outer surface. The edges of the barrel 1 are welded to the trunnions b and 7. The balls 5 are laid in paeach freely with a gap of 8, which allow the balls to move during the rotation of the roller. With STOfri, the diameter of the balls is 5, naturally, / there must be a large gap 9 between the size of the guide 4 and the internal size of the barrel with the condition that during operation the ball does not jump out of its groove between the guides. Groove width & between the guides 4 is selected depending on the size and material of the balls 5, taking into account the thermal expansion of the latter and BUL-. It is necessary to ensure the free movement of the balls in their grooves during the operation of the roller.

Insert 3 is made on the internal profile of the barrel and has an outlet in the cavity of the stub part of the pin b. Here the insert is provided with guides 4, allowing

WATER DOORS

it moves during thermal expansion.

The clip works as follows. som ..

The barrel 1, together with the insert 3, is reported to rotate through the bi 7 axles resting on

bearings.

In the process of rotating the roller in

the slots of the insert 3 begin to rotate the balls 5, which within the guides 4 continuously bombard the channel for the passage of water in the cavity

2, while the water moving along the barrel line is intensely turbulized with moving balls. During the movement of water in the cavity of the barrel, there is a continuous update of the points of contact between the bottom of the barrel, the balls with the cooling water, as a result of which heat and mass transfer processes take place with a small hydraulic resistance in the path of the water and the heat from the surface barrels while reducing energy consumption for pumping water. The movement of the balls with their guides eliminates their locking (jamming} - in the process of working along the entire length of the barrel and ensures reliable, and intensity and economic cooling drum roller.

It is possible to incline the installation and operation of the roller of the proposed construction.

Claims (1)

Invention Formula . 1rplc transport mechanism on bus auth.St. f 659870, about tl and i yusch and with the fact that, in order to increase the reliable operation of the roller, it is equipped with an concentrically mounted barrel with an additional insert, made in the form of a pipe with directional lines that are fixed on its outer surface body rolling is placed .. 1