RU2215077C2 - Cloth vacuum washing method - Google Patents

Abstract

FIELD: cloth liquid treatment method. SUBSTANCE: method involves filling tank with washing liquid so as to form free space above it; creating vacuum in free space; after removal of washing liquid, additionally creating vacuum above clean cloth surface and simultaneously providing centrifugal rotation and supplying atmospheric air into tank to zone under clean cloths. EFFECT: improved quality of cleaning cloths due to removal of residual liquid from cloths. 2 cl, 1 dwg

Description

 The invention relates to the processing of products, and more particularly relates to methods for liquid cleaning products.

 The invention can be used in mechanical engineering, for processing various types of containers, as well as in washing machines and household washing machines for cleaning clothes from technological contaminants - oils, emulsions and other non-chemical inclusions that are present on the surface to be cleaned using a cleaning liquid.

 A known method of vacuum washing products in a container, which consists in filling the container with washing liquid to form a free space above its surface, creating a vacuum in the free space of the container and removing the washing liquid upon completion of cleaning (RU 2016941 C1, 07.30.1994).

 When implementing the known method, the removal of residual washing liquid from the products to be cleaned is carried out using centrifuges or squeezing devices, which complicates the process and design of the device implementing the known method.

 The technical result achieved by the implementation of this invention is to more efficiently remove residual liquid from the processed products or from their surface, which improves the quality of cleaning.

 The specified technical result is achieved by the fact that in the method of vacuum washing products in a container, which consists in filling the container with washing liquid to form a free space above its surface, creating a vacuum in the free space and removing the cleaning liquid according to the invention after removal of the product after removal washing liquids additionally create a vacuum above the surface of the cleaned products, with their simultaneous centrifugal rotation and the supply of atmospheric air into the container under the cleaned products.

 In the process of additional evacuation with the simultaneous supply of atmospheric air to the tank, the centrifugal rotation of the products is stopped.

 The invention is illustrated by a specific example of its implementation, confirming the feasibility of the proposed method, and is illustrated in the drawing, which shows a device for vacuum washing of products, in which drying of cleaned products can be carried out.

 The device comprises a housing 1, in which a container 2 is placed with two rows of holes 3 located under the cover 4 of the housing 1. Between the cover 4 and the end part of the housing 1 there is an elastic gasket 5. A part of the container, on the side wall of which two rows of holes 3 are located, is covered a closed cavity 6. A cavity 6 is connected to the vacuum pump 8 by means of a vacuum fitting 7. The vacuum pump 8 is mounted on a support platform 9 provided with a spring 10. The bottom 11 of the container 2 has a safety net 12, under which a drainage unit 13 is mounted, having tubes 14. In the lower part of the container 2 at its lateral surface 15 is mounted with the inlet shutoff valve 16, which is adapted for filling containers 2 with liquid detergent or for supplying air to regulate the evacuation and drying process intensification products. The amount of washing liquid or atmospheric air entering the internal cavity of the container 2 is controlled by a shut-off valve 16 controlled by a microprocessor (not shown in the drawing).

 The method of vacuum washing products is as follows. In the tank 2 through the shut-off valve 16 and the inlet pipe 15 is fed continuously washing liquid with the formation of free space above its surface. After that, 2 products are loaded into the container, while especially contaminated places can be treated with detergents, for example, soapy water.

 Using a vacuum pump 8 through the vacuum nozzle 7, the cavity 6 and the holes 3 carry out the rarefaction of air in the tank above the surface of the liquid by vacuuming the internal volume of the sealed container 2. Flows of air (gas) present in the layers of the washing liquid rush into the vacuum zone. These air currents drive the cleaning fluid, trap oil droplets, mechanical impurities, flakes, solids and push them onto the surface of the cleaning fluid. Simultaneously with the movement of suspended particles to the surface, which were torn from the surface of the product by gas flows at a maximum speed, the washing liquid is mixed in the direction of vacuum formation. Due to the friction of moving water particles on the surface of the products, pollution is detached from the surface of the products.

 The washing process is performed until the wet liquid and the laundry immersed in it are clean. Estimated time for such cleaning is 3-5 minutes. After washing and checking the purity of the washing liquid, the vacuum is turned off and the washing liquid is removed by completely draining it through the mesh 12, the drain unit 13 and the pipe 14. The process is then carried out as follows. Without removing the lid 4, the internal volume of the container 2 is further evacuated. The cleaned products have residual moisture after cleaning with a washing liquid. In this case, due to the rarefaction of the space above the products, intensive evaporation of the drops of washing liquid that are on the surface of the products occurs.

 The rate of moisture evaporation from the surface of the products increases due to the additional automatic feeding of cleaned atmospheric air into the internal cavity of the container 2. After a predetermined time (25-30 minutes), the lid is opened and linen for ironing or parts (products) for assembly are removed aggregates if industrial products were cleaned. Tissues are placed in a centrifuge for wringing and vacuuming. Evacuation of wet products is carried out in the same tank as cleaning, and using the same vacuum pump. When cleaning products, the air evaporates, which is contained in the particles of the washing liquid, and this ensures the cold boiling of the washing liquid when drying clothes or products. The evaporation of air, which is in the tank, helps to detach the liquid particles that are located on the products, and their evaporation together with the air particles. After the centrifugal rotation of the products ceases, the supply of atmospheric air to the container with its simultaneous evacuation continues.

 To dry two kilograms of cleaned products with a volume of twenty liters, it is necessary to create a vacuum of at least 1520 Pa with a vacuum pump capacity of 0.25 kV.

Claims (2)

 1. A method of vacuum washing products in a container, which consists in filling the container with a washing liquid to form a free space above its surface, creating a vacuum in the free space and removing the washing liquid upon completion of cleaning, characterized in that vacuum is additionally created after removal of the washing liquid above the surface of the cleaned products with their simultaneous centrifugal rotation and the supply of atmospheric air into the container under the cleaned products.  2. The method of vacuum washing of products according to claim 1, characterized in that in the process of additional evacuation with the simultaneous supply of atmospheric air to the tank, centrifugal rotation of the products is stopped.