DE7006692U - SCREENING MACHINE. - Google Patents

Description

"Sieving machine"

The innovation relates to a screening machine with a free screen clamped at the edges in a frame, which by means of arranged under the sieve bumpers can be excited directly, the bumpers from arranged under the sieve hammer exist, which strive from the frame-mounted, oscillating shafts.

The aim of the innovation is to improve the performance of such screening machines and, above all, the service life of the screen.

The solution to this problem is essentially characterized in that the hammer levers on their corresponding with the sieve End parts wear coverings made of elastic, abrasion-resistant material.

Due to the natural vibration ability of the elastic hammer lever linings When the sieve is hit, high-frequency harmonics occur which, among other things, significantly affect the degree of sieving improve. At the same time, however, the sieve is spared and its life expectancy is increased.

A preferred and inventive embodiment of the described The object is characterized in that the hammer of a vibrating shaft with a common bar

are bridged, at least on the one facing the underside of the sieve Side carries a covering made of elastic, abrasion-resistant material.

Under certain circumstances it can be particularly advantageous if, according to the innovation, several spaced apart bars are used Coverings made of elastic, abrasion-resistant 7 / material.

Furthermore, an advantageous and inventive feature of the above-described subject matter is characterized in that the elastic coverings are held adjustable and lockable on the bar at least in the direction of the longitudinal corner. To this end, an advantageous and inventive feature is characterized Embodiment in that the sieve frame on the adjustable and lockable hooped coverings on the rocker bar Outstanding adjustment elements such as rods attack. This allows for a previously unattainable speed and convenience Way the bump zones can be varied.

Furthermore, an advantageous and inventive feature of the The above-described object, characterized in that the elastic coverings by means of at least one by static friction secured plug connection is connected to the rocker bar, preferably such that the elastic coverings than the Swing lever bar encompassing Rinnenprofilstäte are formed.

A preferred and inventive variant of the above-described subject under certain circumstances is characterized in that the rocker arms carried by a vibrating shaft in groups, each bearing a common, elastic coverings Bar are bridged.

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It can be particularly advantageous if the elastic Coverings are permanently attached to the rocker arm strips, for example by gluing.

An embodiment of the innovation is shown in the drawing and is described in more detail below. Show it

1 is a side view of a screening machine,

Fig. 2 details at A of Fig.1 in the larger Scale, partly in cross-section,

3 shows the screening machine in the direction of the screen seen.

Here, the edges of a screen fabric 1 are clamped in a frame P. The latter is held on the screen housing 3. Four shafts 4 extending transversely to the conveying direction of the screening machine are mounted under the screen fabric 1. From each wave 4- strive hammer levers 5 a ^> »which are bridged with a common bar 6 per wave. The strips 6 carry elastic coverings 7 made of abrasion-resistant plastic, for example made of polyurethane. On the shafts M attack electromagnetic drives 8, with which the shafts 4 a constantly changing direction, angle of rotation Ib e bordered rotational movement can be issued. As can be seen from FIG. 3, the strips 6 can have several elastic coverings arranged one behind the other at a distance in the direction of their longitudinal extent? which preferably also have approximately a channel profile and are clamped onto the strips 6.

Claims (9)

protection claims: 1: Sieving machine with a free, on the edges in a frame clamped see, which is directly excitable by means of bumpers arranged under the see, the bumpers from There are hammer levers arranged under the sieve, which strive from oscillating shafts fixed to the frame, thereby characterized in that the hammer levers (5) have coverings (7) on their end parts corresponding to the sieve (1) wear elastic, abrasion-resistant material. 2. Sieving machine according to claim 1, characterized in that the hammer lever (5) of a vibrating shaft (4-) with a common one Bar (6) are bridged, at least on the side facing the underside of the screen from a covering (7) elastic, abrasion-resistant material. 3. Sieving machine according to one or both of the preceding claims, characterized in that the bar (6) has several, spaced apart coverings (7) made of elastic, Has wear-resistant material. 4. Sieving machine according to one or more of the preceding claims, characterized in that the elastic coverings (7) on the bar (6) at least in the direction of its longitudinal extension adjustable and lockable brackets. 5. Sieving machine according to one or more of the preceding claims, characterized in that the linings are held adjustably and lockably on the rocker bar (6) (7) the screen frame protruding adjustment elements, such as rods attack. OipL litg. Conrad Patent attorney 6. Sieving machine according to «one or more of the preceding claims, characterized in that the elastic coverings (7) are secured by means of at least static friction The plug connection is connected to the Schwiog lever strip (6) 7. Sieving machine according to one or more of the preceding claims, characterized in that the elastic coverings (7) as channel profiles encompassing the rocking lever strip (6) are trained Claims 8 screening machine according to one or more of the preceding check-I, characterized _s that carried by a swinging shaft (4) oscillating lever bridges (5) & ~ uppenweise each with a joint, elastic pads (?) Carrying the strip (6) are. 9. Sieving machine after one or more de. preceding claims, characterized in that the elastic linings (7) are non-detachably attached to the rocker arm strips (6).