RU2465142C2 - Pelleting roll press - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to compaction equipment for paste materials and may be used in metallurgy, coal and cement industries. Proposed press comprises bed and two driven interacting rolls. Said rolls comprises support shaft and bearings. Every support shaft is provided, for example, with two sleeves. Said sleeves are composed of segments with shaping cells. Said segments are fastened on support shafts by clamping rings. Said clamping rings consist of segments. Every said segment embraces at least two segments of sleeves and is secured on appropriate support shaft. Adjacent sleeves of every support shaft are tightened together and to support shaft by shared clamping segments. Note here that segments of sleeves are provided with annular grooves to interact with annular ledges on support shafts and locked on appropriate shaft by keyed joint. Segments of clamping rings on one of the shafts feature larger diameter than that of sleeve segments. Note also that clamping ring segments make labyrinth seal with bearings.

EFFECT: simplified assembly/disassembly, decreased weight, higher reliability.

5 cl, 4 dwg

Description

The invention relates to mechanical engineering and can be used for pressing products from powder and pasty materials.

Known roll briquetting press, where the cells for briquetting are located in the segments of the brace of the respective forming rolls, which are attached to the rolls on both sides by coupling rings holding the segments with the necessary tension. (German Patent No. 1928176, 1974)

The disadvantages of this press is that the design of the coupling rings involves the transmission of torque by friction, rather than a rigid connection, therefore, an additional coupling mechanism is required. Also, when removing the coupling rings, all the numerous segments of the bandage fall apart at the same time, i.e. the installation and dismantling of these segments is difficult and the worn segments of the bandage cannot be replaced piece by piece, which negates the idea of a composite bandage.

Known roll briquetting press containing mounted on a bed of a pair of interacting drive rolls with bandages installed on them in the form of a set of segments with forming cells, fixed on the rolls with coupling rings. (US Patent No. 4,097.215, 1978)

The disadvantages of such a press is that when removing the coupling rings all the numerous segments of the bandage fall apart at the same time, that is, the process of mounting and dismounting these segments is difficult and it is not possible to replace worn segments of the band by piece. Also, fixing the segments of the bandage to the roll with studs along the axis of the roll (the length of the studs is longer than the working length of the drum) requires a significant amount of space for mounting and dismounting the segments, which increases the length of the roller, its mass and reduces the rigidity and reliability of fastening the segments of the bandage. Also, the diameter of all the clamping rings is less than the diameter of the bandage, therefore, there is no feeding with extruded material of the extreme cells of the bandage segments, that is, defective briquettes can be defective due to the lack of pockets to hold the extruded material at the edges of the bandage.

The task of the invention is to create a roller press design that is free from these disadvantages.

The problem is solved in that in the known roller briquetting press containing a pair of interacting drive rolls mounted on a bed with shafts mounted on them, in the form of a set of segments with forming cells secured with shrink rings on the rolls, each shroud segment is provided with an annular groove for interaction with the annular guide the protrusion made on the roll, and is additionally fixed relative to the roll parallel to its axis by key connection, while the coupling rings are made of steel segments and mounted on the same cylindrical surface of the support shaft as the segments of the brace, each of which covers no more than two segments of the brace and is radially mounted on the shaft. Each drive roll has two ties installed, with adjacent ties attached to each other and on the rolls by common tie segments, the forming cells on each tie are staggered, and on one of the pair of interacting rolls the tie ring segments are made larger than the diameter of the segments bandage, forming pockets on the edges of mating bandages to hold the pressed material.

Each segment of the brace, interacting with its annular groove with the guide ring protrusion of the support shaft, provides a rigid orientation of the brace in the direction of the axis of the shaft, and the coaxial keyway connection of the segments of the brace with the roll provides a rigid angular orientation of the segments of the brace between themselves and between segments of another brace of the same shaft, thanks to With these solutions, all segments of bandages are interchangeable.

The proposed roll briquetting press is presented in the drawings.

Figure 1 shows a main view of the forming rolls of the press.

Figure 2 - section aa of figure 1.

Figure 3 is a section bB of Fig 1.

In Fig.4 is a section bb In Fig 1.

Roll briquetting press contains a frame 1, a pair of interacting rolls 2, 3, a drive (not shown in the drawings) for their synchronous rotation. Each roll 2, 3 contains a support shaft 4, a bearing support 5 mounted in the pillows 6. On the support shaft 4, for example, two braces 7 are installed, consisting of segments 8 with forming cells 9 arranged in a checkerboard pattern. The bandages 7 are fixed on the support shafts 4 by coupling rings made up of segments 10, each of which covers no more than two segments 8 of the braces 7 and is radially mounted on the support shaft 4. The adjacent braces 7 of each roll 2, 3 are fixed to each other and on the support shaft 4 by a common composite clamping ring consisting of segments 11. Moreover, the segments 8 of the shafts 7 are provided with grooves (not shown in the drawing) and are installed with the possibility of interaction with the corresponding annular protrusions 12 made on the supporting shafts 4, and additionally fixed relative to the shaft 4 parallel to its axis by key connection 13. The segments 10 of the coupling rings are mounted with the possibility of creating a labyrinth seal with a bearing support 5. On the roller 3, the coupling segments 10, 11 are made of a larger diameter than the diameter of the segments 8 of the bandages 7 for forming pockets (to hell not shown) to hold the pressed material. Each support shaft 4 has a drive end for connection to a corresponding drive (not shown in the drawing), each support shaft 4 is an interchangeable element for forming rolls 2, 3.

Press works as follows.

Appropriately prepared pressed material is fed by a loading device (not shown in the drawings) into the space between the bandages 7 of the interacting rolls 2, 3 synchronously rotating towards each other. The resulting briquettes under the influence of gravitational and centrifugal forces fall out of the cells 9 of the forming rolls 2, 3.

The proposed design of the roll briquetting press simplifies the process of mounting and dismounting the segments of the bandage, and also allows the piecewise replacement of worn segments of the bandage.

Claims (5)

1. Roller briquetting press containing a bed and a pair of interacting drive rolls containing support shafts, bearing bearings and bandages mounted on the support shafts in the form of a set of segments with forming cells mounted on the support shafts by coupling rings, characterized in that the segments of each band are provided with annular grooves for interaction with guide ring protrusions made on the support shafts, and additionally fixed relative to the corresponding support shaft parallel to its axis shp one-piece connection, while the clamping rings are made of composite segments, each of which covers no more than two segments of the bandage and is radially mounted on the support shaft. 2. The press according to claim 1, characterized in that on each supporting shaft two bandages are installed, while adjacent bands are fixed to each other and on the supporting shaft by a common clamping ring. 3. The press according to claim 1 or 2, characterized in that on one of the pair of interacting rolls, the segments of the coupling rings are made of a larger diameter than the diameter of the segments of the bandages. 4. The press according to claim 1 or 2, characterized in that the forming cells on each band are staggered. 5. The press according to claim 1 or 2, characterized in that the segments of the coupling rings are installed with the possibility of creating a labyrinth seal with a bearing support.

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