JPS62116411A - Screw conveyor having special space above - Google Patents

Abstract

PURPOSE:To prevent a decrease of conveyance efficiency during conveyance of a viscous material or the like by selecting a cover covering the upper section of a screw conveyor which has a shape forming an idle space in response to a conveyed material. CONSTITUTION:A screw conveyor casing 1 is split-formed into the upper half and lower-half sections, which are integrated with bolts 3. The upper-half section 2 is selected so that a space formed between the upper-half section and a screw 4 is made an adequate size in response to the grain size, viscosity, etc. of a conveyed material. According to this constitution, clogging is prevented and a decrease of conveyance efficiency can be prevented.

Description

[Detailed description of the invention] , <ri l) When conveying materials by a knee conveyor, viscous semi-dry plastic materials, etc., may be stored inside the sealed screw conveyor housing, especially if the length of the conveyor is long. The conveyor may become clogged with the conveyed material, making it impossible to operate or significantly reducing the conveying efficiency. Such problems are likely to occur when pushing up. In addition, if the upper half of the screw conveyor is open, the conveyed material may spill out of the screw conveyor or the conveyed material may be pushed back, significantly reducing the efficiency of conveyance. In order to solve this problem, the present invention, as shown in Fig. 1,
For the entire axial length or part of the conveyor, as shown in the cross-sectional views perpendicular to the screw shaft as shown in Figures 2 to 4, a rectangular, circular, trapezoidal, or other shaped space is provided in the upper part of the conveyor to hold the material. The structure is such that the clogging of the conveyed material escapes through the play of this space, eliminating the clogging phenomenon.

As shown in Figure 5, the upper half of the housing may be manufactured as one piece with the lower half; however, in the unlikely event that a transported item becomes jammed, the upper half must be removed for inspection or to remove the jammed material. In order to make this possible, we have devised a structure in which a flange is provided at the connecting part of the upper and lower halves, as shown in Figs. 1 to 4, and the structure can be attached and removed by tightening bolts.

In addition, the present invention prevents the backflow of the transported material and spillage to the outside in the case of an open-top type by making the upper space an appropriate size depending on the particle size, viscosity, etc. of the transported material. prevent,
It is possible to prevent clogging without reducing conveyance efficiency.

[Brief explanation of drawings]

Figure 1 is a side view of the installation of the screw conveyor of the present invention;
FIG. 2 is a sectional view taken in a direction perpendicular to the screw shaft, and shows that the upper cover has a rectangular cross section. Similarly, FIGS. 6 and 4 show that the upper cover has a semicircular cross section, Shows a trapezoidal shape. The above is a removable device in which a flange is attached to the upper cover and a bolt is attached to the 7 flange of the housing. In contrast, Fig. 5 shows various shapes of covers being screwed together.
A cross-sectional view of a non-removable type manufactured integrally with the conveyor casing is shown. 0 1 Niscrew conveyor casing, 2: Cover, 3 = Cover mounting bolt, 4 Niscrew, 5: Hopper for feeding objects, 6: Screw drive Motor, 7: 1gJ 'jJ r Flash Procedure Amendment Form

Claims (1)

[Claims] Screw conveyors in general with a structure with a cover on the top that provides play space for conveyed objects