KR20000048614A - Extraction column provided with a system for fast mounting, replacing and dismounting the shaft elements - Google Patents

Abstract

PURPOSE: An extraction column is provided which is useful for extractioncolumns using solvent. CONSTITUTION: An extraction column is provided with a practical and fast system for mounting, replacing and dismounting the elements of the shaft(2) of the upperdecanter(18) and of the lower decanter(19). The intermediate parts(14) are mounted on fixing means(10) resilient with respect to the support(1). The different elements of the extraction column are mounted on these intermediate parts, compressed by fixing screws(26) placed at the top of the column. The unscrewing of these screws(26) enables, by means of the spring-back(10), the unscrewing of each constituent elements and its quick replacement, without specific tools.

Description

Extraction column provided with a system for fast mounting, replacing and dismounting the shaft elements}

Prior Art and Problems Raised

A typical extraction column mainly consists of an upper fixed conduit, a shaft consisting of one or more shafts with a gasket, and a lower fixed conduit. This assembly is supported in the position of the upper fixed conduit or the lower fixed conduit. Fixed conduits are provided with tapping points of various types of pipes for the inflow and movement of liquids. Other tapping points necessary for the operation of the column, for example auxiliary inlets of liquid and samples or connection points for monitoring and control devices can be connected and fixed to the shafts. These tapping points may be suitably formed in short intermediate members disposed between the base shafts.

1 shows a portion of a shaft of a conventional extraction column. In the figure, there is shown a support mast 1, shafts 2, two pedestals 3 formed in a predetermined position, and intermediate members 4 firmly attached to the pedestal, respectively. The pedestals 3 are fixed to the support mast 1 by means of fastening bolts 8, indicated by their central axes. Each intermediate member 4 is arranged between two shafts 2, sealed by O-rings 5, three or on the tightening axis of clamps 6, or It is fixed by fixing clamps or rotary clamps 6 with four tightening holes. The intermediate members 4 are arranged between the clamps 6 joining the two shafts 2.

Here too, the device can be easily and quickly disassembled by a clamp assembly provided with butterfly nuts and hinged bolts.

However, at least two operators with appropriate tools should be involved in the replacement of gears for technical reasons or primarily for research and development. In addition, if the actual height is 6-8 M and the components of the column with intermediate shafts bolted to the support mast need to be replaced, the time required for this operation is relatively long. That is, many tasks such as:

Fastening bolts of the pedestals 3 fixed to the support mast 1 at the position of the upper stem of the column, in order to give a degree of freedom to the portion provided with elliptical holes around the fastening bolts 8 of the pedestals 3. Loosening the field 8;

Removing the two clamps 6 of the shaft 2 to be replaced (removing the four bolts twice);

It consists of pulling the accumulators upwards of the column assembly to separate the accumulators to be replaced.

These operations can be easily performed on conventional extraction columns, but in a column installed in a confined space where workers have to work through the openings of the protective gloves wearing gloves and using a remote control device. Does not apply.

In addition, when working with the extraction column in an environment that is difficult to work as follows, it can be understood a lot of difficulties that the operator will face. That is, for example, in a difficult working environment,

It is difficult to use certain tools when making adjustments on a wall surrounded by gloves;

The risk of dropping tools, screws and bolts on glass parts and the accompanying risks; And

-The risk of exposure to radiation in relation to working time in nuclear areas for workers.

The present invention aims to solve many of these disadvantages.

FIELD OF THE INVENTION The present invention relates to a column for solvent extraction, and more particularly to assembling, disassembling and replacing certain parts constituting the column, for example, components of a tubular shaft quickly and practically. It relates to a solvent extraction column. The columns of the invention relate in particular to small or medium diameter columns maintained by manual or remote control methods.

The invention and its various technical features will become more apparent from the following description with reference to the drawings.

1 is a partial front view showing a portion of a conventional extraction column;

2 is a partial front view showing a part of an extraction column according to the present invention;

3 is a front view of an intermediate component secured by a positioning pin;

4 is a plan view of the intermediate part of FIG. 3.

Accordingly, the subject matter of the present invention relates to an extraction column with a system for the rapid assembly, disassembly and replacement of the shaft material, the configuration of which is as follows:

A support mast comprising a plurality of shafts stacked;

Means for arranging said accumulators with respect to each other;

Means for securing the shafts.

According to the present invention described above, the fixing means are concentrated at one end of the column, and the shaft members use a means for elastically and automatically detaching from each other, and the shaft members are loosened from each other when the fixing means are released.

In the main embodiment of the invention, when the column is installed with the upper fastening conduit, the fastening means consists of two supporting screws acting on the upper end of the upper fastening conduit.

In certain embodiments of the invention, where the column comprises a support mast, the pedestal is secured to this support mast. A hole is formed in the pedestal, and the shaft is arranged to pass through the hole. The detachable elastic means are fixed on the pedestals.

In this case, if the column is complemented by intermediate parts arranged between the shaft members, the elastic separation means consists of two compression springs which are fixedly arranged on one side of each intermediate component to lift the shaft material when the fixing means are loosened. It is desirable to be. Indeed, in this case the elastic separation means may consist of two springs, one of which is installed above the two projections for securing each intermediate part and the other is installed below it, and these It is held in place by a rod that is fixed in the pedestal and presses the upper spring by its upper end.

In another particular embodiment of the invention, in the case where the column comprises intermediate parts disposed between the accumulators, the means for arranging the accumulators in position with respect to each other, means that the intermediate parts on the upper and lower surfaces Concave portions are formed which open up to some outer wall and consist of intermediate parts with positioning pins formed inside the holes of the intermediate parts, having a width larger than the outer diameter of the bearings to almost contact the outer edge of the bases of the bearings. do.

2 shows the support mast 1, the shaft 2, and the fixed pedestal 3. The axles are separated by intermediate parts 14. This figure also shows tapping points 11, 12 protruding from the upper fixed conduit 18 and the lower fixed conduit 19.

In contrast to the construction method shown in FIG. 1, these intermediate parts 14 are not attached to the fixing pedestals 3. In practice, the automatic elastic separating means supports the intermediate parts 14 to be positioned at predetermined positions between the shafts 2. For each intermediate part these automatic elastic separators consist of four compression springs 10. Each intermediate piece 14 comprises two fixing lugs 15. The spring 10 is disposed below each fixed protrusion 15 and the other spring is installed above each fixed protrusion 15. The rod 16 is fixed by supporting and complementing each pair of springs, for example by tightening it into the fixed pedestal 3. The upper distal end 17 of each rod 16 holds the spring 10 resting on the stationary protrusion 15 under pressure. In other words, each intermediate part 14 is weighted by the compression springs 10, in particular the spring of each shaft 2 that presses the intermediate part 14 and the spring located below the fixed projection 15 of the intermediate part 14. It is maintained in a vertical or stack shape at a predetermined position determined by.

As such, the stack described above comprises all the accumulators 2 stacked on top of the other accumulators with the intermediate part 14, and the upper fixed conduit 18 and the accumulators 2 arranged on top of the accumulators 2. It can be seen that it comprises a lower fixed conduit 19 disposed at the bottom of the stack consisting of a stack, whereby the stack is firmly fixed in place and constitutes a solvent extraction column. With respect to each of the stems 2 and in the position of the stems 2 with respect to the upper fixed conduit 18 and the lower fixed conduit 19, each one has an O-ring 5 or a flat gasket therebetween. And an intermediate base 14, each of which includes a lower base 21 inserted into the upper recess of the intermediate component 14 on which it is mounted. Likewise, each shaft 2 includes an upper base 22 that is received in the recess of the intermediate part located directly above it. In the upper anchoring conduit 18 and the lower anchoring conduit 19, each of them is placed over a recess formed in the lower anchoring clamp 25 that anchors the stack of columns.

The fixing means of this column are concentrated at its upper distal end and in particular support the upper base 22 of the upper fixing conduit 18 via the upper fixing clamp 24. This fastening means is complemented by two fastening screws threaded into the upper pedestal 30 and inhibits free rotation in the upper fastening clamp 24 to enable their lateral movement.

By tightening the fastening means described above, ie screws 26, the upper fastening conduit 18, the shafts 2, the intermediate parts 14, the lower fastening tank 19 and the O-rings 5 for sealing Pressure is applied to the stack consisting of: The length of the compression springs 10, in particular the bottom springs, is designed such that the intermediate parts 14 lightly press the bottom springs in a predetermined position where they hold the stack of columns. Because loosening these fastening means, ie, loosening the screws 26, also loosens the stack of columns so that each intermediate part 14 is pushed upwards by the two lower springs 10.

Thus, the stems 2 and the upper base 22 of the upper fixed conduit 18 and the lower fixed conduit 19 can be appropriately loosened from the recesses in which they are installed. That is, each component can be arbitrarily removed depending on the purpose of adjusting or repairing the extraction column.

3 shows how the means for installing the shafts and the fixed conduits in place are complemented by intermediate parts. In fact, in FIG. 3, the recess 27 is shown in dashed lines on the upper side surface 31 of the intermediate part 14. Similarly, other recesses are provided in the lower surface 32 of the intermediate component 14. The width of these recesses is slightly larger than their diameter so that the stems 2 and the bases 21, 22 of the upper fastening conduit 18 and the lower fastening conduit 19 can be easily accommodated in the recesses. do.

The positioning pin 28 penetrates straight in the thickness direction of the intermediate part 14 between the two recesses 27. It includes a retaining pin 29 that presses the bottom of the recess 27 at the upper side surface of the intermediate part 14.

4 shows a plan view of the actual position of the positioning pins described above with respect to the stems 2 or the fixed conduit. In fact, it is arranged to abut the outer edge of the base of the above-mentioned components. That is, it can be seen that the recesses 27 are provided in close proximity to the outer circumferential wall 33 of the intermediate part 14.

4 shows the upper base 22 of the accumulators 2. That is, in the case where each shaft 2 or the lower or upper fixed conduit is fitted, the insertion of the positioning pins 28 in the intermediate part 14 which receives them prevents them from coming off. When the fastening screws indicated by reference numeral 26 in FIG. 2 are loosened, the stack is loosened, and thus the operator simply removes the fastening pin 28 at the position of the two bases of the shaft member 2 to be replaced. The accumulators are simply separated from the column without being hindered by any difficult problems because the stack is loose.

Reverse operations for the installation of new components to be replaced in the extraction column can also be carried out easily.

In addition, it is possible to provide about 10 mm of freedom in the horizontal or clearance direction to loosen the column at the position where each intermediate part is installed.

In addition, by using the compression springs 10 described above, the distribution of force is appropriately made when the assembly of column components is fixed together.

This system allows for very quick and practical assembly, disassembly and replacement of the components that make up the extraction column, which facilitates work through armored holes or inside the shield wall using remote control equipment. can do.

In addition, since the intermediate parts 14 are not attached to the fixing pedestals 3, they have the advantage that they can be appropriately combined with pipes as follows.

Pipes for introducing auxiliary liquids such as reagents,

A pipe to accept samples,

Pipes for inserting instruments,

Pipes for connecting various monitoring and measuring devices for controlling the operation of the column.

This property is practically very useful for workers, since in the prior art components that are usually formed of metal or glass accumulators must be provided before assembling the column.

Claims (4)

An extraction column with a system for rapid assembly, disassembly and replacement of the shaft material, the column comprising: Support mast 1; Fixing brackets 3 fixed to the support mast; A tubular shaft consisting of a plurality of shafts 2 stacked one by one; Means for determining the position of said accumulators (2); Means for concentrating at one end of the column and for fixing the accumulators (2); And -Means for elastically and automatically separating the accumulators 2 in order to loosen the accumulators 2 when the fixing means 26 are loosened, The positioning means comprise intermediate parts (14) arranged between the stems (2); The resilient automatic separating means of the shafts 2 is fixed to the pedestals and consists of at least two compression springs 10, the fixing means 26 for loosening the shafts 2 from each other; When unwound, they are placed and fixed on both sides of the intermediate parts 14 to lift the shafts, Extraction column with a system for rapid assembly, disassembly and replacement of the shaft material, characterized in that the fixing pedestals (3) comprise holes in which the position of the shaft material is determined. 2. The extraction column according to claim 1, wherein the extraction column comprises an upper fixation conduit (18), wherein the fixation means comprises two fixation screws (26) acting on the upper distal end (22) of the upper fixation conduit (18). An extraction column with a system for rapid assembly, disassembly and replacement of the shaft material, characterized in that the configuration. 2. The intermediate parts (14) according to claim 1, wherein the intermediate parts (14) comprise two fixing lugs (15), and the resilient automatic separating means is arranged on top of the fixing protrusions (15) with respect to each fixing protrusion (15). And two compression springs 10 arranged below the fixing protrusion 15, which springs are fixed in a corresponding fixing pedestal 3 and through their upper distal end 17 an upper compression spring 10. Extraction column with a system for rapid assembly, disassembly and replacement of the shaft material, characterized in that it is held by a rod (16) for pressing). 2. The extraction column according to claim 1, wherein the extraction column comprises intermediate parts (14) disposed between the accumulators (2), and the positioning means is, as the intermediate parts (14), an upper surface (31). And from the lower surface 32 to its outer circumferential wall 33 and to contact the outer edges of the stems 2 and the bases 22, 23 of the upper fixed conduit 18 and the lower fixed conduit 19. 2, 18, 19 with recesses having a width greater than the diameter of the base, the intermediate parts 14 comprising positioning pins 28 formed in the holes of the intermediate parts 14; An extraction column with a system for rapid assembly, disassembly and replacement of the shaft material, characterized in that the configuration.