RU32783U1 - Degreaser - Google Patents

Description

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DEGREASING DEVICE

The invention relates to the processing of metal and non-metal detergents by non-mechanical methods, in particular to devices for the degreasing of metal products with chlorine-containing organic solvents.

A device for washing and drying parts is known, comprising a chamber with a lid and a table placed in it, pipelines with nozzles for supplying washing liquid and heated air, the table is mounted with the possibility of vertical movement and connected via flexible traction bodies to the lid (see A.S. USSR No. 720050, publ. 05.03.80).

The disadvantage of this device is that in vaping mode no vapor is captured, which increases the consumption of solvent and the release of harmful substances into the atmosphere.

A device is known that contains a sealed cleaning chamber, in which the cleaned part is placed. An organic solvent evaporator and a vacuum pump for evacuating the chamber communicate with the chamber through pipelines. A heat exchanger is installed in the upper part of the chamber, through which refrigerant is passed. The part is cleaned as a result of the combined action of solvent vapors condensing directly on the surface of the part and liquid droplets formed as a result of condensation of solvent vapors on the surface of the heat exchanger and falling down onto the part surface (see GB Patent GB 2300199 of 04/28/95).

The disadvantage of this device is that there is no immersion of parts in the solvent, so that parts of complex configuration will not be degreased efficiently. In addition, the quality of degreasing is highly dependent on the heat capacity temperature and the degree of contamination of the incoming parts.

A known installation for cleaning products in chlorine or I chlorofluorinated organic solvents, including a washing chamber, a condensation belt with a recuperative circuit and a distillate storage tank, a working tank with a heater, a container for clean solvent, a table for setting the product and spray bodies, one of which installed in the washing chamber, characterized in that, in order to expand technological capabilities while simplifying the installation design, the tank for clean solvent is sealed and connected to the line w supplying compressed gas and distillate storage, and both the sprinkler connected directly via conduits with valves elektromagnsh-tion with a container for the pure solvent, wherein the table for mounting articles vtolnen vozmozhnoetyu with vertical movement, and the other

  MKHC23G5 / 04

sprinkler - with the possibility of free rotation. (Lm. USSR No. 1623802, publ. 30.01.91)

The disadvantage of this installation is the lack of drying of parts and a vapor recovery system, which complicates the use of toxic solvents.

The closest technical solution to the claimed one is a device for cleaning and degreasing parts from the components of heavy engineering products, for example, in organic solvents, which implements a closed cycle with regeneration and recycling of the solvent. The equipment comprises a housing, inside of which a basket with parts and assemblies to be cleaned moves between the position where the basket with parts and assemblies is immersed in a cleaning solvent and the position where

The basket is lifted from the drying solvent. Cleaning solvent circulates in

a vessel equipped with nozzles to create turbulence in the vessel to facilitate cleaning. During recycling, the solvent passes through the filter. In the drying zone there are several air scrapers formed by slots and metal plates. The equipment also contains a system for filtering and recirculating the drying air. During the cleaning process, the basket with parts and assemblies can make multiple oscillatory movements between the positions of the first solvent and the old ones (see GB patent GB 2293834 from 04.24.95).

The disadvantage of this installation is that its design will not allow toxic solvent vapors to escape into the air of the working area, since the drying zone and the washing zone are not isolated from each other. Thus, the drying air is constantly saturated with solvent vapors from the washing zone, which will enter) 9 the air of the working zone when the lid is opened after the end of the cycle. The situation is aggravated if the solvent is heated.

The task to which the claimed invention is directed is to improve the quality of cleaning, improve working conditions, reduce losses of solvent, by conducting cleaning in a closed cycle.

The technical result consists in organizing washing and drying with a solvent in one working chamber.

This result is achieved in that a device for degreasing metal and nonmetallic parts in organic solvents, containing a working (washing) chamber, inside of which there is a basket for washed parts, a system for filtering and re-circulating drying air, is equipped with a container for an organic solvent, for example perchlorethylene, this heater is located inside the working

j. .

a sealed chamber, and the system for filtering and recirculating the drying air is made in the form of a vapor condensation unit, which co (holds a refrigerator and a circulation fan, and the working chamber is connected to the solvent tank through a pump and a drain pipe.j

The drawing shows a diagram of the proposed device degreasing.

A device for degreasing metal and non-metal parts in organic solvents, containing a working chamber 1, inside of which there is a basket 2 for washed parts 3, a system 4 for filtering and recirculating drying air, equipped with a capacity 5 for an organic solvent, while the heater 6 is located inside the working chamber 1, complete airtight, and the system 4 for filtering and recirculating drying air is made in the form of a vapor condensation unit, which contains a refrigerator 7 and a circulation fan an emulsifier 8, the working chamber being connected to the solvent tank 5 through a pump 9 and | drain pipe 10, in addition there is a valve 11.

A device for degreasing works as follows.

Details that need to be degreased are placed in the mesh basket 2 and loaded into the working chamber 1, made in the form of a tank with an airtight cork. After sealing the working chamber 1, an organic solvent from

tanks 5. As an organic solvent, chlorofluorinated compounds are used.

solvents, for example perchlorethylene. In the process of processing de galey 3, the solvent is heated to a temperature of 50-100 ° C with a heater 6, located inside the working chamber 1, while the convection of the solvent occurs.

At the end of the washing of parts, valve 11 opens and the solvent is drained back into the container 5.

The solvent evaporates from the heated surfaces of the parts and walls of the working chamber 1, the vapors of which with the help of the circulation fan 8 enter the refrigerator 7 of the vapor condensation unit 4, where they are cooled and condensed. Solvent condensate flows back to vessel 5. |

After the end of the process, there is a depressurization of the working chamber and removal of the basket with washed and dried parts.

Thus, the proposed design allows 1 pc to avoid | toxic solvent vapors entering the air of the working area when opening the door after the end of the cycle. In addition, it is possible to use non-combustible perchlorethylene as chlorine or chlorofluorine-containing organic solvents. All this will lead to: an increase in the quality of cleaning, improved working conditions, reduced cleaning in a closed cycle. Authors: 4 solvent losses due to j S.A. Zyuzkevich. A-Koroban P.V. KOSYAK

Claims (1)

A device for degreasing metal and non-metal parts in organic solvents, containing a working (washing) chamber, inside of which there is a basket for washed parts, a system for filtering and recirculating drying air, characterized in that it is equipped with a container for an organic solvent, for example perchlorethylene, while the heater is located inside the sealed chamber, and the system for filtering and recirculating the drying air is made in the form of a vapor condensation unit, which which comprises a refrigerator and a circulation fan, the working chamber being connected to the solvent tank through a pump and a drain pipe.