RU2075325C1 - Settling tank with flight conveyer for cleaning lubricating-cooling liquids - Google Patents

Abstract

FIELD: environmental control. SUBSTANCE: settling tank comprises body and chain conveyer with outwardly projecting scrapers. To increase cleaning efficiency, tank comprises flight conveyer provided with inner scrapers attached to its inner side alternately with outwardly projecting scrapers. In settling tank, between upper and lower conveyer strands, there is mounted hollow shell and classifying chute rigidly attached to shell. Both shell and chute are connected to side walls of tank body having in its upper part, above upper conveyer strand, guiding duct. EFFECT: effective cleaning of lubricating and cooling liquids from mechanical impurities. 3 cl, 2 dwg

Description

 The invention relates to mechanical engineering and can be used at enterprises using cutting fluids (coolant), as well as other process fluids to be cleaned from mechanical impurities.

 The claimed invention is aimed at solving the problem of increasing the efficiency of cleaning the coolant in the tanks-sumps with scraper conveyors.

 Known gravity settling tanks equipped with vertical partitions forming a labyrinth of communicating chambers (see, for example, L.V. Khudobin, E.G. Berdichesky. Technique for the use of cutting lubricants in metalworking. M. Engineering. 1977. p. 75. Fig. 44 (a c)).

 However, in these sump tanks there is no mechanical removal of settled sludge and chips.

 Closest to the technical nature of the claimed invention is a prototype tank with a scraper conveyor selected as a prototype (see, for example, L.V. Khudobin, E.G. Berdichesky. Technique for the use of lubricants and cooling agents in metalworking. M. Engineering. 1977 p. 75. Fig. 44, d)).

 The disadvantage of the prototype is the low speed and low efficiency of the liquid purification process.

 This drawback is due to the fact that fine particles of mechanical impurities, having a small mass, very slowly settle in a liquid whose column height is significant relative to the particle size of the impurities.

 The aim of the invention is to increase the efficiency of cleaning coolant.

 To achieve this goal, the tank-sump containing the scraper conveyor is equipped with external and internal scraper located alternately on the chains of the scraper conveyor, and in the tank-sump between the upper and lower branches of the scraper conveyor there is a hollow casing and a separation tray rigidly attached to it, connection with the side walls of the sump tank, in the upper part of which a guide casing is located above the upper branch of the scraper conveyor.

 The outer scrapers of the scraper conveyor are adjacent to the surface of the guide casing and the bottom of the settling tank, and the inner scrapers are adjacent to the surfaces of the hollow casing and the separation tray.

 The distances between the surfaces of the guide casing and the upper side of the hollow casing, as well as between the side of the hollow casing and the bottom of the settling tank, are equal to each other and do not exceed the sum of the heights of the outer and inner scrapers.

 According to the information available to the authors, the set of essential features characterizing the essence of the claimed invention is not known from the prior art, which allows us to conclude that the invention meets the criterion of "novelty."

 According to the author, the essence of the claimed invention should not be obvious to a specialist from the prior art, because it does not reveal the above effect on the obtained technical result of the new property of the object of the totality of features that distinguish the claimed invention from the prototype, which allows us to conclude that it meets the criterion of "inventive step".

 The set of essential features characterizing the essence of the invention, in principle, can be repeatedly used in the field of engineering with obtaining a technical result, which consists in increasing the efficiency of cleaning the coolant, ensuring the achievement of the goal, which allows us to conclude that the invention meets the criterion of "industrial applicability".

 The invention is illustrated by graphic materials, which depict: in FIG. 1. General view of the settling tank with a scraper conveyor; in FIG. 2. Top view.

 Declared according to the first claim, the sump tank with a scraper conveyor for cleaning the coolant contains the sump tank 1 with a scraper conveyor 2, to the chains 3 of which are attached 4 outer and 5 inner scrapers. Between the upper and lower branches of the scraper conveyor, a hollow casing 6 and a separation tray 7 rigidly attached thereto are connected to the side walls 8 and 9 of the settling tank. A guide casing 10 is located above the upper branch of the scraper conveyor 2 in the upper part of the settling tank.

 According to the second claim, in the inventive device, the outer scraper 4 of the scraper conveyor 2 abuts against the surface of the guide casing 10 and the bottom 11 of the settling tank 1. The inner scraper 5 abuts the surface of the hollow casing 6 and the separation tray 7.

 The sump tank is equipped with an inlet pipe 12 for supplying contaminated coolant and a pipe 13 for discharging purified coolant. For removable mechanical impurities, container 14 is intended.

 In the process, contaminated coolant enters through the pipe 12 into the tank-sump 1. Next, the fluid is sent to the pipe 13 to drain the cleaned coolant. To pass the path between the 12 and 13 nozzles, the fluid must flow through a narrow channel, the height of which does not exceed the outer 4 and inner 5 scrapers. The channel is formed first by the bottom 1 of the sump tank and the lower surface of the hollow casing 6, then the right side of the hollow casing 6 and the vertical wall of the sump tank 1. Next, the channel is formed by the surface of the guide casing 10 and the upper wall of the hollow casing 6. The last section of the channel is formed by the separation tray 7 and a guide casing 10 and passes into the pipe 13 for removal of the purified coolant.

 Scrapers of the conveyor 2 quench the flow and contribute to the deposition of mechanical impurities on the surfaces of the bottom 11 of the settling tank 1 and on the outer surface of the upper wall of the hollow casing 6, and therefore cleaning the coolant. The low height of the channel through which the coolant moves also contributes to the rapid and efficient deposition of solids.

 Thus, the liquid, passing through a narrow channel, is quickly cleaned of mechanical impurities due to deposition and leaves the pipe 13 already purified.

 Periodically, the scraper conveyor is turned on and removes mechanical impurities from the upper wall of the hollow casing 6 by internal scrapers 5, and from the bottom 11 of the settling tank 1 by external scrapers 4 into the container 14.

 According to the experiments, the claimed invention can be used in the national economy and in comparison with the prototype has the following advantages: higher efficiency and speed of cleaning the coolant in the tanks-sumps.

 The claimed solution does not adversely affect the state of the environment.

Claims (3)

 1. Tank-sump containing a housing and a chain conveyor with external scrapers mounted on its outer side, characterized in that it is equipped with a guiding casing located in the upper part of the casing above the upper branch of the conveyor, a hollow casing and a separation tray attached to it, installed between the upper and lower branches of the conveyor and connected to the side walls of the housing, while the conveyor is equipped with internal scrapers mounted on its inner side alternately with the outer scrapers.  2. The sump tank according to claim 1, characterized in that the outer scrapers of the conveyor are adjacent to the surface of the guide casing and the bottom of the housing, and the inner ones to the surface of the hollow casing and the separation tray.  3. The sump tank according to claims 1 and 2, characterized in that the distance between the surfaces of the guide casing and the upper side of the hollow casing, as well as between the lower side of the hollow casing and the bottom of the casing, are equal to each other and do not exceed the sum of the heights of the outer and inner scrapers.

Images