CS261515B1 - Filter equipment for concrete sludge with bottom discharge - Google Patents

Abstract

The device for filtering, in particular, concrete sludges generated during the washing of concrete mixers, truck mixers, concrete mix pumps or during the washing process in panel factories is advantageously applicable, in particular, in the construction industry. The device consists of a funnel equipped with a coarse filter connected to a sludge pump, a cyclone separator, a stoneware filter, a filtrate collection tank and the relevant mechanisms for changing the filter material. The advantage of the above device is that the individual components of, for example, the concrete mix are separated, purified and the fine components captured in the stoneware filter are reused in the technological process of producing, for example, the concrete mix after dewatering and separation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtering apparatus, in particular concrete sludge, resulting from the washing of concrete mixers, concrete mixers, concrete mixers, or washing processes in panel manufacturing plants.

Up to now, large and expensive sedimentation tanks have been used, which, when overfilled, or when the sludge is insufficiently settled, permeate contaminated water into the channel and eventually cause a sewerage system accident. If the tank is not properly insulated or ruptured, the soil is devastated. Their drawback is the solidification of sedimentation impurities in the tank, followed by the necessary disintegration and loss of material (components of the concrete mixture), which is balanced to the dump. Above all, concrete sludge disposal facilities are also known, but these are very expensive. Also known are cleaning devices with lateral discharging of contaminated filter material. In this solution, the outer seam must be rigidly connected to the filter body and when the emptying plate moves along with the filter material, which has to be torn off the suture, causing considerable friction which causes the bottom plate to slip against the filter material.

The aforementioned drawbacks are largely eliminated by the device according to the invention, which separates the individual components, for example, the concrete mixture, cleans the fine components collected in the earthenware filter after drainage and separation in the technological process of the production of e.g. from a funnel equipped with a coarse filter and a flip screen, following a sludge pump and a cyclone separator provided with a discharge closure and a connecting pipe with a closure to connect to the inlet side of the sludge pump and a sewage sludge tank, the upper opening of the cyclone separator being bound to the earthenware filter provided a spout with a segmented closure, a double aggregate hopper and a shut-off flap attached to the hopper provided with a drive with a drive and a segmented closure, resulting in the filtrate collecting tank.

The device according to the invention is schematically illustrated in the attached drawing in an exemplary embodiment.

Claims (1)

SUBJECT Filter equipment for ready-to-discharge concrete sludge, characterized in that it consists of a funnel (1) fitted with a coarse filter (23) and a tilt screen (8), coupled to a sludge pump (2) and a cyclone separator (3) provided with a drain plug ( 19) and a connecting pipe (17) with a closure (18) for connection to the inlet side of the sludge pump (2) and a sludge tank (21) with a sewn liner (22), the upper ν.ν. 4 The device consists of a funnel 1, into which rinsing water is contaminated with the components of the concrete mixture. The inlet to the nozzle is covered by a flip-through screen 8 below which is a coarse filter 23 to trap coarse dirt so that no larger parts of the solid components get into the pump than the pump standard prescribes. The funnel 1 is connected to the suction branch of the sludge pump 2, which in turn transports contaminated water to the cyclone separator 3 of the coarse parts, partially purified water flows into the earthenware filter 4 provided with a double aggregate hopper 5, for coarse aggregate 25 and fine aggregate 26 in which even the delicate parts of the rinse water are trapped. Purified water flows out of the spout 10 to waste or is used again to clean the devices in a closed ring. After clogging the stoneware filter 4, it is necessary to replace the filter material (aggregate) and replace it with new aggregate and clean the equipment. The cleaning of the cyclone separator 3 is carried out by opening the drain plug 19 and draining the sludge tank 21 into which the screen insert 22 is removable, which retains the solids and the water flows to the bottom of the vessel. In order to clean the cyclone separator 3, the discharge closure 19 is closed and the closure 13 is opened in the connecting pipe 17 and the sludge pump 2 swells the cleaning water in the closed circuit. After rinsing, the trapped sludge is discharged again from the cyclone separator 3 into the sludge tank 21. Then the shutters 18 and 19 are closed and the stoneware filter 4 is cleaned, by closing the segmented shutter 6, opening the shutter 9, starting the spinner 14 and the cultivator 15 are driven. The rotating blades of the unmarked transfer ram filter material above the discharge opening and the mass is discharged into the hopper 7 in which the sprayer 16 is rotated, which filters and prepares to be discharged by the segmental closure 20 into the recovery tank 24, by which the aggregate is transferred to the aggregate landfill for further use in the concrete mixing process. The device is advantageously usable especially in construction. OUT of the outlet of the cyclone separator (3) is bonded to the earthenware filter (4) equipped with a spout (10) with a segmented closure (6), a double aggregate hopper (5) and a closing flap (9) attached to the hopper (7) provided with a sprayer (16) with a drive (15) and a segmented closure (20) opening into the filtrate collecting tank (24). 1 sheet of drawings 261515