FI58359C - MASSATRAOG FOER TRAESLIPMASKIN - Google Patents

Description

[73ETT] [b] (11) advertisement.su CO 7 eg LJ 'UTLÄGG NI NGSSKRI FT & OD y C Patent aySnneity 1C 01 1001' Patent rneidelat ^ (51) Kv.ik.Wa.3 D 21 B 1/24 FINLAND I — FI N LAN D (21) p «t * nttih« k · ™ * —p «t * nt» n * 6iu \ ini 791827 (22) H * k * ml * pllvl - AiwtUcnlnfidq; 07.06.79 (FI) (23) AlkvpUvt — Glltl | h «t * d« x 07 · 06.79 (41) Tullut JulklMkxl - Bllvlt offuntllg tomttU 1 «registry manager (44) N | htlv * k.ip« on j. monthDuik.1 »», date. -

Patent and re-registration Aluekin utlagd oeh utl.skrifcM publicand 30.09.80 (32) (33) (31) Fyyditty ttuolkvu »—Begird prlorltet (71) Oy Tampella Ab, PI 256, 33101 Tampere 10, Finland-Finland (FI) ( 72) Pekka Haikkala, Tampere, Rainio Pessa, Tampere, Finland-Finland (FI) (74) Leitzinger Oy (5M Wood grinding machine mass pool - Massatr & g för träslipmaskin

When sanding trees with pocket or oven sanders, the sanded mass falls into a basin under the sandstone at a consistency of approx. 0.8 ... 5%.

The pulp ground from this collecting basin is then exited by its own weight, usually over the overflow threshold for sorting, etc.

Until now, pocket and kiln grinders have used a concrete pool exclusively for the foundation and floor level of the grinder, which is also usually coated with either tile or stainless steel with a thickness of 2 ... 4 mm due to tightness and corrosion.

However, it has been found that a pressure grinder having a pressure of more than 1 atmosphere in the grinding chamber in which grinding takes place makes the strengths of the ground mass considerably improved.

This starting point is an object of the invention.

If the pulp pool associated with the current type of grinder foundation were used in a pressure grinder, it would have to be unreasonably reinforced because the high force due to overpressure tends to lift the actual grinder up from its foundation, causing it to be difficult to control. :

The object of the invention is therefore to provide a new type of pulp pool in which said difficult-to-control stress on the foundation does not occur and which, moreover, is sufficiently strong to be able to receive the overpressure of the grinding chamber and the weight caused by the grinding compound.

To achieve this purpose, the pulp pool according to the invention is characterized in that the self-supporting pulp pool is fixed and supported at the top, i.e. suspended from the frame of a wood grinder.

According to a preferred embodiment of the invention, for this suspension support, the upper edge of the pulp basin is provided with a circumferential fastening flange with which the basin can be fastened to the counter-flange of the grinder body.

The pulp pool according to the invention no longer rests on the foundation of the grinder, but is supported and tightly attached to the grinder itself, so that the concrete foundation of the grinder does not generate additional pressurizing forces on the grinder, which can be very large. .

The self-supporting pool structure according to the invention is suitable for both conventional and pressure grinding machines and can also use a known overflow threshold for adjusting the height of the surface of the grinding compound in the grinding pool.

In the following, some embodiments of the invention will be illustrated with reference to the accompanying drawings, in which Figure 1 is a perspective view of a self-supporting pulp basin according to the invention for an upstream grinder.

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Figure 2 shows a self-supporting pulp basin for an overflow grinder.

Figure 3 shows a side view of a grinding machine with a pulp basin according to the invention.

In the grinding machine according to Fig. 3, the timber is pressed in a conventional manner with two press members 13 against the grinding stone 3 on both sides thereof. The ground wood pulp falls into the pulp basin 1 below the grindstone 3. Figures 1 and 3 show a pool construction in which the surface of the ground pulp 1 is adjusted by a separate overflow threshold 2 so that the grindstone 3 partially passes in the pulp suspension. This ensures that the stone is cleaned and cooled. After the overflow threshold, the mass falls into the tailpipe, the surface 4 of which is thus below the overflow threshold. From here, the pulp is led through a separate outlet pipe 5 to a further process. A second separate outlet pipe 6 can also be used for pressure grinding, through which the pulp is led to a separate pressure grinding process.

The sides 7 of the pulp basin itself and the base plate 8 are constructed to withstand the forces applied to them. The pulp basin, on the other hand, is connected, for example, by a flange connection 9 to the body part of the grinder, which is further supported at its central part and at both ends by the foundation 11.

Thus, the forces exerted on the basin by overpressure do not transfer to the foundation at all due to the self-supporting structure of the mass basin.

In this case, the foundation of the grinder can also be built on support pillars, which makes the actual floor structure light.

Figure 2 shows the tub construction when grinding the so-called pitless grinding, i.e. the surface 1 of the ground mass, is so low that the grindstone 2 does not touch it. This construction thus completely lacks the overflow threshold and the pulp is led through the outlet pipe 12 directly to the further process after it has fallen into the basin.

Ko. the construction is thus smaller and simpler than before and can be better shaped to withstand overpressure.

Also in this embodiment, the bottom and side plates of the basin are constructed 4,5359 to withstand the forces applied to them, and the pulp basin is supported at the top, e.g. by a flange connection 9, on the grinder body 10, thus forming a self-supporting structure.

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