JPH0624701U - Cleaning solvent distillation pot - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Efficiently and highly dry the solvent-containing sludge produced from the dry-cleaning process of clothes to completely remove the solvent and make the residue into a harmless powder that is easy to handle. . [Structure] A suitably tapered circular cylinder-shaped drying container composed of an outer case 10 and an inner case 20 is rotatably supported at the center of a tiltable U-shaped support frame 4, and a stirring blade is provided on the inner wall of the inner case. Along with projecting, a stirring medium such as an iron ball is charged, heating steam is circulated in the space between the outer and inner cylinders, and the sludge-like substance received in the inner cylinder is heated and agitated to produce a dry powdery residue. And a cleaning solvent distillation pot configured to continuously exhaust the vaporized solvent to the condenser of the solvent recovery device.

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to a distillation pot for cleaning solvent, and more specifically, it efficiently removes sludge that has become sludge, such as that in which the solvent used for dry cleaning is polluted or the filter material of a solvent cleaning filter is aged. The present invention relates to a cleaning solvent distillation pot that is thoroughly dried and can be disposed of without fear of environmental pollution.

[0002]

[Prior art]

 For dry cleaning of clothes, natural solvents such as petroleum, synthetic solvents such as tetrachloroethylene (abbreviated as "park" in the industry), fluorine, ethane, etc. are used. If these solvents become contaminated by use, the solvent is distilled and taken out. Along with that, the residue must be discarded. In addition, the cleaning equipment is equipped with a filter that cleans the solvent, which contains a powdery adsorbent that is usually called powder. Similarly, the solvent must be recovered by distillation and the residue must be discarded. Since these pollutants and wastes are sludge-like, they are difficult to handle, and even if they are dried by heating with a conventional solvent distillation apparatus, the solvent cannot be completely taken out, and the semi-drying without solvent ( Disposal of the (paste) sludge as it is causes a serious environmental pollution.

A conventional typical solvent distillation apparatus will be briefly described with reference to FIG. 4. A box-shaped distillation pot X has a double-walled bottom portion, and the solvent-containing sludge is put into the tank by passing steam through the bottom portion. After heating, the solvent and other liquid components are vaporized and guided to the outside of the tank, passed through a condenser C to be liquefied, and the solvent is recovered S through a water separator D. The recovered solvent is reused in the washing tub W, and the separated water T is discarded. However, in a conventional distillation pot, since it is a fixed type, sludge-like sludge accumulates in layers in the distillation pot as the amount of powder and dirt discharged from clothes increases, and no matter how high-heated steam is passed through the bottom. Even so, heat does not reach the upper layers of the sludge, and the sludge accumulates with a large amount of solvent. Therefore, immediately before the sludge is taken out regularly, the steam itself is put directly into the distillation pot to make it dry better, and the sludge is brought into direct contact with the sludge. Since the separated water T containing ethylene) is generated, it causes a serious problem of groundwater pollution which is a big social problem today, which is not preferable.

[0004]

[Problems to be solved by the device]

 Therefore, the present invention efficiently and highly dries the sludge containing the solvent generated from the dry cleaning process to completely evaporate and remove the solvent, and completely dries the residue to form a harmless powder that is easy to discharge. The objective was to realize a new solvent distillation pot that can be used in the solvent distillation system of dry cleaning equipment.

[0005]

[Means for Solving the Problems]

 For this reason, the present invention is directed to a rotatable double-walled drying container, preferably a solvent distillation pot comprising a tapered cylinder composed of an outer cylinder and an inner cylinder, and a drying container containing solvent-containing sludge. The outer shell of the machine is rotated while being heated by heating means such as steam or electric heat, and a spiral stirring blade is provided on the inner wall of the container, and a stirring medium such as an iron ball or glass ball is charged to rotate the sludge by rotation. After stirring thoroughly, the solvent is expelled, vaporized and led to the liquefier, and the residue from which the solvent has been completely removed is made into a dry powder so that it can be easily discharged by tilting the drying container. The drying container (tapered cylinder) is cantilevered at the center of the U-shaped support frame when viewed in a plane so that it can rotate on the cylinder axis, and the U-shaped support frame can be tilted at both ends. Is supported by a pair of columns.

Electricity or steam can be used as the heating means, but since a large amount of steam is originally used in the cleaning factory, it is preferable to use the steam heating type. In this case, since steam is fed into and discharged from the non-rotating pipe to the rotating drying container, the bearing part of the U-shaped support frame described above is used as the connecting part between the container and the pipe, and rotation is allowed here. In addition, a sealed connection structure is provided to prevent steam from leaking. Similarly, in order to guide the solvent gas from the rotating container to the condenser of the liquefier, a structure in which the rotating part and the non-rotating part are hermetically connected is provided.

A drying container, particularly a cylinder, is provided with a rotation input member such as a driven bevel gear on the outer wall of its outer barrel, and is rotationally driven by meshing with a driving bevel gear driven by a motor. A detachable lid will be provided on the top of the cylinder so that the dry residue can be easily discharged from the top in a tilted position.

According to the present invention, the solvent is completely expelled from the sludge by the rotation of the drying container, the stirring blades on the inner wall of the container, and the stirring medium charged separately, and the residue is easily converted into a powdery dry matter. In addition to being discharged harmlessly, it is not necessary to directly contact the sludge with steam as in the past, so the solvent recovery process is simplified and the separated water containing solvent, which causes environmental pollution, is added. The epoch-making result that it does not occur is achieved.

[0009]

【Example】

 A preferred embodiment of the cleaning solvent distillation still of the present invention will be described with reference to the drawings. FIG. 1 is an elevational view showing the external appearance of a cleaning solvent distillation still of the present invention incorporated into a solvent distillation system, and FIG. 2 is a plan view showing a state where the distillation still is almost horizontal. The distilling pot 6 of the present invention has a U-shaped support frame 4 supported in a tiltable manner (arrow D) via a support shaft 3 on a pair of stanchions 2 standing on a base 1 at a substantially central position. It is rotatably supported by a support 5 in a cantilever manner. The support shaft 3 is tilted by the worm and the worm gear, which are connected to the handle 34 shown in FIGS. A driven bevel gear 7 annularly provided on the outer circumference of the distillation still 6 meshes with a driving bevel gear 8, and the driving gear 8 is driven by a motor 9 via a belt and a gear (shown by a broken line in FIG. 2) as shown in FIG. Is rotated.

FIG. 3 is a cross-sectional view showing the interior of the distillation still in detail by cutting it vertically. A suitable drying container, that is, the distillation pot 6 basically comprises an outer barrel 10 and an inner barrel 20, both of which are tapered to reach the opening 21. The driven gear 7 is provided on the outer periphery of the outer case 10 in a protruding manner. The opening 21 of the distillation pot 6 is opened and closed by the lid 11. The lid 11 is closed by latching a latch hook 25, which is loosely attached to a lever 24 pivotally attached to a bracket 23 fixed to the outer case, to a protrusion 27 of the lid. An adjusting screw 26 is provided on the head of the hook 25. The bottom of the outer case 10 is extended as a supported connecting pipe 14 that is rotatably supported by the bearing 5 of the support frame 4, and is a stationary flexible pipe for sending and discharging heated steam (FIG. 1, A). Connected to 15. It is practical that the flexible tube 15 has a concentric double structure of an inlet tube 16 and an outlet tube 17.

The supported connecting pipe 12 is rotatably supported in a sealed manner by a bearing 13 and a mechanical seal 14 inside the bearing 5. A gland packing may be used instead of the mechanical seal. When an electric heating element is used as the heating means, the electric heating element is wound around the outer circumference of the inner case 20 to be described below to supply electric power from the outside, but in this case, the seal structure of the bearing 5 is not necessary. , It suffices if there is a connector that simply connects a non-rotating electric cable to the rotating cylinder to supply power.

An inner case 20 is fixedly mounted inside the outer case 10 via a mounting flange 19. The top of the inner case 20 is closed before the opening 21. In this way, a space is created between the outer case 10 and the inner case 20, and the heating steam introduced from the inlet pipe 16 circulates around the inner case 20 to remove the inner case 20 containing the solvent-containing sludge. Heat evenly.

A connecting pipe 28 is projectingly provided on the lid 11, and is connected to a flexible pipe 30 for exhausting solvent gas via a stationary sealing pipe 29. The sealing tube 29 hermetically rotatably supports the connecting tube 28 with a bearing 31 and a mechanical seal or a ground packing.

Further, several stirring blades 22 are preferably provided in a spiral shape on the inner wall of the inner case 20 so as to project. The stirring blade 22 is a means for uniformly, quickly and highly drying the sludge put in the inner case 20 by lifting it up and dropping it as the inner case rotates, and drying the sludge uniformly. The full and partially cut blades are shown. In this example, there are four blades in total. The number of blades is not limited to this.

In order to further enhance the stirring effect of sludge by the rotation of the inner case 20, in the present invention, a stirring medium 35 such as an iron ball, a glass ball, or a ceramic ball is loaded into the inner case. These agitating media act to prevent sludge-like sludge from adhering to and solidifying on the inner wall of the inner case. It should be noted that the stirring medium 35 such as an iron ball is preferably of a relatively large diameter, for example, a baseball ball size, for facilitating separation and removal from the dried sludge, but is not limited thereto.

To explain the operation of the present apparatus, a sludge-like sludge composed of a polluted cleaning solvent and a filter material aged by use is charged into the distillation pot 6 in the posture as shown in FIG. One charging method is to open the valve V so that it opens in the direction of the distillation pot 6 and allow the waste material of the solvent filter (F in FIG. 4) to flow together with the solvent in the direction of the arrow F, and to branch the portion 33 and the exhaust pipe 30. Through the inner barrel 20 of the distillation pot. Then, the valve V is closed to open the exhaust pipe 30 upward (in the direction of the condenser C), and the heating vapor A (not shown) is supplied with heating vapor A by the inlet / outlet pipe 15 to the space around the inner body 20. Send in. At the same time, the motor 9 is started to rotate the distillation pot 6. The inner barrel 20 of the distillation still 6 is rotated around its axis while being heated by the high-temperature steam that circulates around it, and the spiral blades 22 lift and drop the sludge to stir it to maximize the cleaning solvent contained in the sludge. Then, it is vaporized and sent to the exhaust pipe 30. Since the exhaust pipe 30 leads to the condenser C of the liquefier, the vaporized solvent is sent to the condenser C, where it is liquefied and passed through the water separator D to be used again in the cleaning device.

In the rotating inner cylinder 20, an agitating medium such as iron balls 35 is contained to prevent sludge sludge that has become muddy from adhering and solidifying to the inner wall of the cylinder, and by hitting sludge to be rotationally agitated. As it acts to expel the solvent liquid, the sludge is uniformly, quickly and highly dried and turns into a completely solvent-free powder. When this happens, rotation of the distillation still 6 is stopped, the lid 11 is separated from the body by operating the lever 24 and the hook 25 (one hook 25 is removed in FIG. 3), and only the body is indicated by the arrow D in FIG. As described above, the dried powder may be appropriately discharged by tilting. Since the effluent is mere trash that no longer contains harmful solvents, it can be appropriately disposed of, such as by waste combustion, without fear of environmental pollution.

The drying container of the present invention has a tapered truncated cone shape on the top side, which is less likely to be filled with sludge to the top when rotary heating is performed in an inclined posture. Therefore, it is not necessary to provide a large capacity in the top region.

[0019]

[Effect of device]

 As described above, according to the solvent distillation pot of the present invention, since the solvent-containing sludge is heated and rotated and agitated, the contained solvent is completely expelled and vaporized, and the sludge contained in the drying container itself is removed. It does not make it difficult to discharge by adhering to the inner wall and solidifying or accumulating in layers, and it can be easily discharged as a harmless dry powder without solvent, and it can be discharged in the sludge heating process. Since the steam does not come into direct contact with the sludge, there is no risk of producing a large amount of separated water containing harmful components, and it is possible to complete solvent recovery and simplify processing in dry cleaning equipment. At the same time, it has great effects such as eliminating the harmful effects of environmental pollution.

[Brief description of drawings]

FIG. 1 is an elevational view showing the external appearance of a preferred embodiment of a cleaning solvent distillation pot according to the present invention incorporated into a part of a solvent distillation system.

FIG. 2 is a horizontal plan view of the distillation still.

FIG. 3 is a vertical cross-sectional view of a main part of the distillation still of the present invention, which is vertically cut along the central axis of the distillation still.

FIG. 4 is a schematic system diagram of a general solvent recovery apparatus including a conventional still pot.

[Explanation of symbols]

 4 ... U-shaped supporting frame 5 ... Supporting part 6 ... Distilling pot 7 ... Driven bevel gear 10 ... Outer barrel 11 ... Lid 12 ... Received connecting pipe 15 ... Feeding / discharging static flexible tube 20 ... Inner barrel 22 ... Stirring Blade 28 ... Connection pipe 29 ... Stationary sealing pipe 30 ... Flexible exhaust pipe 35 ... Stirring medium (iron ball)

Claims (9)

[Scope of utility model registration request] 1. A dry container which is heated from the surroundings is rotatably supported on its axis, a stirring blade is projectingly provided on the inner wall of the container, and a solid substance for preventing sticking of the contents and promoting crushing is charged. The feature is that the separable lid is provided on the top side of the container so that the solvent-containing sludge can be charged from the top side and the dry residue remaining after drying the sludge can be tilted. And a cleaning solvent distillation pot. 2. The drying container has a double structure of an outer body 10 and an inner body 20 each having a tapered cylindrical shape, and an opening 21 of the outer container 10 has a lid 1.
The cleaning solvent distillation pot according to claim 1, wherein the cleaning solvent distillation pot is configured so that it can be opened and closed by means of 1, and heating means is interposed between the double structures. 3. The cleaning solvent distillation pot according to claim 2, wherein the heating means is heating steam introduced from outside the outer case 10. 4. The cleaning solvent distillation pot according to claim 2, wherein the heating means is an electric heating element disposed around the inner case 20. 5. The cleaning solvent distillation pot according to claim 1, wherein any one of iron balls, glass balls, and ceramic balls is charged as the stirring medium 35 in the drying container. 6. The cleaning solvent distillation pot according to claim 2, wherein the stirring blade is a spiral blade 22 projecting from an inner wall of the inner case 20. 7. A connecting pipe 28 projecting outward from the center of the lid 11 is connected to an exhaust pipe 30 leading to a liquefaction device through a stationary sealing pipe 29 which is hermetically coupled to the lid 11 in a relatively rotatable manner.
The cleaning solvent distillation still according to claim 2, which leads to a condenser. 8. The cleaning solvent according to claim 7, wherein the exhaust pipe 30 is passed through a branch portion 33 to a solvent cleaning filter of a cleaning device, and the waste filter material is directly received from the top of the inner case 20. Distiller. 9. A U-shaped support frame 4 is provided with a driven connecting gear 12 provided on the outer periphery of the outer case 10 and connected to rotary drive sources 8 and 9, and a received connecting pipe 12 protruding from the bottom of the outer case 10. Support in the center of 5
The cleaning solvent distiller according to claim 2, wherein the support portion 5 is a connection portion with a stationary flexible tube 15 for feeding and discharging heating steam.