SU1391906A1 - Roller to rolling machine - Google Patents

Abstract

The invention relates to equipment for processing polymeric materials, in particular to heated rollers, and can be used on various roller machines, for example calenders. The purpose of the invention is to increase productivity by eliminating the temperature difference at the ends of the roll and increasing the width of the sheet material obtained. For this, the swath is provided with a rod installed in the peripheral channel B. The spiral partition is made in the form of two plates mounted symmetrically with the axis of the peripheral channel. One end of the plate is rigidly fixed to the screw, and the other mounted on the rod. In the peripheral channel are made longitudinal grooves. The rod is mounted with the possibility of axial mixing in the slots. The means for turbulizing the heat transfer fluid is provided with a longitudinal direction yush. One end of it is rigidly fixed to the rod, and the other end is connected to the screw. Directing yush, and installed between the plates, which are fixed to the screw stiffener. 2 hp f-ly, 3 ill. S (l

Description

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The invention relates to equipment for the processing of polymeric materials, I in particular to heated rollers, and can be used on various roll machines, for example calenders.

The purpose of the invention is to increase the production: water content due to the elimination of the differential

temperature at the ends of the roll and increase

the width of the resulting sheet material.

FIG. 1 shows the proposed va; lok, general view; in fig. 2 and 3 - means

for turbulization of the coolant.

The roller contains a hollow body 1, peripheral channels 2 parallel to the working surface of the roller, connected with channels 3 inclined towards the center of the roller, means for supplying heat transfer media in the form of a pipe 4 inserted into the body I with one side and installed in a sealing piston 5, dividing the housing 1 into two cavities. Channels 2 are located at I depth of 50 mm from the outer surface of the I roll. The housing 1 is closed by a lid 6. Roll I contains plugs 7 installed along the I ends of channels 2 by means of screws 8 guided through them. The roller contains means I for turbulizing the coolant in the form; installed in channel 2 spiral re-; towns, which is made in the form of two; mounted symmetrically to the axis of the channel 2 plates 9 and 10.

In channel 2, longitudinal grooves 11 and 12 are made in which the rod 13 is mounted for axial movement. The rod 13 is fixed with one end of the plate 9 and 10, which are mounted with the other end on the screw 8.

To prevent bending of the plates 9 and 10, they are fixed on the screw 8 by means of a stiffening rib 14.

To increase the rigidity of the means for the turbulization of the heat transfer fluid between the plates 9 and 10, a longitudinal guide 15 is installed, rigidly fixed to the rod 13 at one end and connected to the screw 8 with the other end.

To ensure the tightness of the design, the threaded hole in the plug 7 can be sealed relative to the shaft-screw 8, for example, by means of a reinforced sleeve (not shown).

Plates 9 and 10 are twisted.

For roll calender 0 71 OH 1800 with heat0

For the same roll, but with heat carrier oil type AMT-300, in the production of PVC linoleum (operating temperature 140-170 ° C), the parameters of the flexible plate are as follows. These are: the length of the flexible plate is equal to 0.15 of the length of the roll barrel, which corresponds to 270 mm, while the twisting angles at the inlet and outlet of the peripheral channel are respectively 130 and 220 °. With the length of the flexible plate 0.05 times the length of the roll barrel, 0, which corresponds to 90 mm, the same twist angles considered are 240 and 330.

The roll works as follows.

Before screwing into the roll through each plug 7, the screw 8 is passed through so that the edges of the flexible plates 9 and 10 fixed to it are in close proximity to the inner end of the cover 7. The rod 13, on which the other edges of the flexible plates 9 and 10 are fixed, is inserted into the longitudinal grooves 11 and 12, and the plug 7 is screwed into the housing 1, closing the peripheral channel 2.

To control the twist angle of the flexible plates 9 and I O, each turn of the plug 7 when it is screwed into the housing. 1 should be accompanied by unscrewing the screw-screw 8 at an appropriate angle. After the final installation, the plugs 7, the flexible plates 9 and 10 are screwed with the screw 8.

The coolant enters inside the pipe 4 and flows into the roll cavity on the right side of the sealing piston 5. Then along the right inclined channels 3 the coolant enters the peripheral channels 2. Due to the presence of swirling plates 9 and 10 at their inlet and outlet, the heat transfer fluid on these The areas are turbulized and, thereby, increase heat transfer to the roll. When this occurs, a local temperature increase in the zone of the ends. The degree of turbulence is also increased by reducing the working area of the cross section of channel 2 by installing a screw 8 and a guide 15 in it.

Pass through the peripheral channels 2, the coolant enters the left inclined channels 3 and goes to the drain through the left cavity.

The angle of winding of the flexible plates determines the degree of turbulence in the flow of heat-transfer fluid and its variation can be adjusted.

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a carrier of the type of water upon receipt of nitroliolation of the temperature on the surface of a valnoleum (working temperature 60-90 ° C) ka near its ends. The minimum sign of the plate 9 or 10 is chosen 0.13 of the length of the roll barrel, which corresponds to 234 mm, its twist angles at the entrance and exit from the peripheral channel were selected

respectively 90 and 180 °. When the length of the flexible plate is 0.07 the length of the roll barrel, which corresponds to 126 mm, the same twist angles are 270 and 360 °.

The torsion angle of the flexible plates is limited by the required degree of turbulence in the heat transfer medium, and the maximum value by the strength of the plate. Since the temperature of the heat transfer medium is lower on the left side of the roll at the exit of the peri-4: 1 channel than at the entrance, the optimum values of the twist angles

The torsion angle of the flexible plates is limited by the required degree of turbulence in the heat transfer medium, and the maximum value by the strength of the plate. Since the temperature of the heat transfer medium is lower on the left side of the roll at the exit of the peri-4: 1 channel than at the entrance, the optimum values of the twist angles

plates 9 and 10 are respectively 270 and 180 °.

In the case when the plate length exceeds the value of 0.15 of the roll barrel length, the local temperature rise arising due to its use is created on the surface of the roll with a uniform temperature distribution, which leads to the opposite of the expected result.

and means for turbulizing the coolant in the form of a spiral partition installed in the peripheral channel, characterized in that, in order to increase productivity by eliminating the temperature difference at the ends of the roll and increasing the width of the sheet material, it is provided with a rod installed in the peripheral channel The septum is made in the form of two pieces. If the plate length is less than 10 symmetrically symmetrical to the axis of the peripheral

higher than the 0.75 roll barrel length, then a local temperature increase will not be enough to compensate for heat losses at the roll ends. The optimal length of the flexible plate is 0.1 of the length of the roll barrel.

Claims (3)

1. Roll for roll machines, containing a hollow body, peripheral channels located parallel to the working surface of the roll, communicating with channels inclined to the center of the roll, means for supplying heat transfer fluid, plugs installed at the ends of the peripheral channels by means of wine passed through them 15 20 25 channel plates, one end rigidly fixed to the screw and the other end mounted on the rod, with longitudinal grooves in the peripheral channel, and the rod mounted for axial movement in the grooves. 2. Roller according to claim 1, characterized in that, in order to increase the rigidity of the means for the turbulization of the heat transfer medium, the latter is provided with a longitudinal guide, one end rigidly fixed to the rod, the other end connected to the screws, and installed between the plates. 3. Rollers according to claim 1, characterized in that, in order to prevent the plates from bending, the latter are fixed on the screw by means of a stiffener. //// // U // /// A / // /. and means for turbulizing the coolant in the form of a spiral partition installed in the peripheral channel, characterized in that, in order to increase productivity by eliminating the temperature difference at the ends of the roll and increasing the width of the sheet material, it is provided with a rod installed in the peripheral channel The main partition is made in the form of two cm5 0 five channel plates, one end rigidly fixed to the screw and the other end mounted on the rod, with longitudinal grooves in the peripheral channel, and the rod mounted for axial movement in the grooves. 2. Roller according to claim 1, characterized in that, in order to increase the rigidity of the means for the turbulization of the heat transfer medium, the latter is provided with a longitudinal guide, one end rigidly fixed to the rod, the other end connected to the screws, and installed between the plates. 3. Rollers according to claim 1, characterized in that, in order to prevent the plates from bending, the latter are fixed on the screw by means of a stiffener. V fPlJ2.J 2 15 JO 3 FIG. 2 /, 15 / J Fiyoz