SU451448A1 - Device for tensioning wire in drum vacuum filters - Google Patents

Description

one

A device for tensioning a wire in drum vacuum filters is known, comprising a spring and a stem associated with it; mounted on a common shaft tension drum and ratchet wheel; a lever pivotally connected with a spring stem; cam interacting with ratchet wheel; and an emphasis interacting with the free end of the lever.

However, during the rotation of the drum of the vacuum filter, parts of the known device are periodically dipped into the filtered suspension, overgrown with a layer of sludge, which reduces its efficiency.

The turn of the drum, which draws wire, is produced by external force from the stop fixed to the vacuum filter housing.

The purpose of the invention is to increase the efficiency of the device in operation.

For this, the proposed device includes a swing arm with a load mounted on the shaft of the ratchet mechanism and the drum.

The device is a compact unit that can be enclosed in a sealed case, mounted on the drum shaft of the vacuum filter above the suspension level, thereby eliminating the device’s immersion in the filtered suspension and increasing

his performance. The rotation of the drum is created not by an external force (abutment), but by swinging the lever, which creates the convenience of mounting and operating the device.

FIG. 1 shows the end surface of the drum of the vacuum filter, in plan; in fig. 2 is a section along A-A in FIG. one.

The device comprises a drum 1 rigidly connected by a shaft 2 with a ratchet wheel 3. On

swinging levers 4 with a load of 5 mounted on the lever are set loose in the shaft grooves. A spring-loaded pawl 6 is installed on the swing arm, which interacts with the ratchet wheel 3. A second pawl 7 is mounted on the body 8 of the device in which the drive elements are mounted. The shaft at the outlet of the housing has a seal 9. A spring-loaded roller 10 is fastened to the housing and abuts against a tensionable wire. Housing

attached to the shaft 11 of the drum of the vacuum filter clamp 12.

The device works as follows. The tensioned wire, wound on the fabric of the vacuum filter, is fixed on the drum I with a free end and, rotating the shaft 2 of the drum 1, which has a square cross-section at the end, carries out an initial tension manually. The device rotates with the shaft 11

drum vacuum filter. At the same time, the swinging lever 4 performs swinging movements around the shaft 2. The load 5, attached to the swinging lever 4 by interacting the pawl 6 with the ratchet wheel 3, creates a torque on the drum 1, producing a loosening of the wire. When the load moves in the opposite direction, the dog 6 jumps over the teeth of the ratchet wheel, and the drum 1 is kept from turning in the opposite direction with the dog 7.

With sufficient tension on the wire, the drum does not rotate, since the moment from the load transmitted to the drum must correspond to the required tension. Spring loaded roller 10

It maintains a constant tensioning force of the wire, regardless of the position of the swinging lever 4 with the load 5, while rotating the drum of the vacuum filter.

Subject invention

A device for tensioning wire in drum vacuum filters containing a tension drum mounted on a common shaft and a ratchet mechanism, characterized in that, in order to increase the efficiency of the device in operation, it includes a swinging lever with a weight

on the ratchet shaft and drum.

// / 2

Fig. (

Aa a Q

 FIG. 2