SU1567284A1 - Combined hydrocyclone - Google Patents

Abstract

The invention relates to the field of industrial water clarification and mineral processing and can be used in the ore-dressing, chemical and other industries. The purpose of the invention is to increase productivity by continuously removing sludge. The combined hydrocyclone consists of a cylindrical housing 1, a tangential inlet 2, a drain 3 and a sand 4 nozzles and a central filter cartridge (P) 5, a scrubber device made in the form of a rotating pipe 6 with nozzles (H) 7, sensor 8. For maximum effect the gap (δ) between the inner surface of P5 and the exit sections H7 should be in the range δ = 0.34 D - 4.8 D, where D is the diameter of H7. The initial suspension enters the housing 1 through the nozzle 2 and twists. Under the action of centrifugal forces, the suspension is divided into a condensed product discharged through the nozzle 4, and clarified, which after passing through P5 is discharged through the nozzle 3. The wastewater device is designed to regenerate the outer surface of the P5. The regulation of the process parameters is carried out according to the indications of the sensor 8. 2 Il.

Description

Air (Soda)

f for regeneration

feed t-1 - - FIG. /

C / 1L / 6

about

(L

SP

oe j

00

condensed product

It is used in the mining, chemical and other industries. The purpose of the invention is to increase productivity by continuously removing sludge. The combined hydrocyclone consists of a cylindro-conical body 1, a tangential inlet 2, a drain 3 and sand nozzles and a central filter cartridge (P) 5, a wash-off device made in the form of a rotating pipe 6 with nozzles (H) 7, a sensor 8 To maximize the effect, the gap (между) between the inner surface of the P5 and the outlets. The invention relates to devices for separating the solid and liquid components of the suspension under the influence of centrifugal forces and a filtering method and can be used for 5 enrichment of minerals and clarification of industrial waters in the ore-dressing industry, in the metallurgical, chemical and other sectors of the national economy. thirty

The purpose of the invention is to increase productivity by continuously removing sludge.

FIG. 1 shows the proposed combined hydrocyclone, -j general view, section; in fig. 2 shows section A-A in FIG. one.

The combined hydrocyclone consists of a cylindrical body 1 with a tangential inlet nozzle up to 2, a drain nozzle 3, and a sand nozzle k for draining the solid component of the suspension out of the device.

Inside the cylinder-shaped case d5 1 there is a filtering cartridge 5 connected to the drain pipe 3 of the hydrocyclone. The filter cartridge 5 is made in the shape of a truncated cone, with a large base facing the CQ drain nozzle 3. Inside the filter cartridge 5 there is a trash device made in the form of a rotating central tube 6 with nozzles 7 that are installed along a helix perpendicular to the surface of the filter cartridge 5. Since the distance between the inner surface of the filter is 55

By sections H7 should be in the range of S 0,3 td - 4,8s1, where d is the diameter of H7. The initial suspension enters the housing 1 through the nozzle 2 and twists. Under the action of centrifugal forces, the suspension is divided into a condensed product discharged through pipe k, and clarified, which, after passing through P5, is discharged through pipe 3. A waste-washing device is designed to regenerate the outer surface of P5. The adjustment of the process parameters is carried out according to the indications of the sensor 8. 2 Il.

about

5 Q

five

5 and the outlet cross section of the nozzles 7 should be as small as possible, and the filter cartridge 5 has a conical shape, then the nozzles 7 are designed so that their length increases in the direction of flow inside the cartridge 5.

The adjustment of the operating mode of the combined hydrocyclone is carried out using a sensor 8. which is mounted on the drain pipe 3.

Combined hydrocyclone works as follows.

The initial suspension through the tangential inlet nozzle 2 under pressure enters the cylinder-conical body 1, where it is intensively twisted and rushes in the form of a vortex flow towards the sandy nozzle C, the largest solid particles due to centrifugal forces move to the periphery and along a helical line are sent to the sand outlet to the partially clarified suspension containing smaller and lighter particles, by an upward vortex flow in the central part of the hydrocyclone is directed to the filter cartridge at 5 which is connected to a drain pipe 3, wherein the filtering occurs slurry to form a cake on the outer surface of the filter cartridge 5.

The filtrate from the cartridge 5 is discharged through the drain pipe 3. In the filtering process, the thickness of the sediment layer on the surface of the filter cartridge increases, while producing

five

The clarity of fluid clarified accordingly.

For continuous operation of the filtered cartridge 5, it is regenerated by jets of liquids (or air), which, under pressure exceeding the working pressure in the hydrocyclone, come from nozzles 7 and dynamically act on the inner surface of the cartridge 5. When the hydrodynamic impact of the jets occurs, the filter septum regenerates, intensive loosening of sediment and removing it from the surface of the filter cartridge. Since the filter cartridge has the shape of a truncated cone, with a large base facing the drain pipe, the destroyed sediment under the action of gravity falls towards the sand pipe k, without delaying the lower parts of the filter cartridge 5.

The jet flowing from one nozzle 7 destroys a certain portion of the sediment on the filter cartridge. When the central tube 6 is rotated with nozzles 7. distributed along a screw line, the entire surface of the filter cartridge is exposed to liquid jets that completely release the filter cartridge from the sediment. In order for the hydrodynamic effect of the jet to be strongest at a given pressure, the distance between the outlet section of the nozzle and the inner surface of the filter cartridge should be as small as possible. And since the filter cartridge has the shape of a truncated cone, the nozzles are designed in such a way that the length of each nozzle increases in the direction of flow inside the cartridge

The rotation of the central pipe 6 with the nozzles 7 can be carried out as with a constant predetermined speed, depending on the intensity of the growth of the sediment thickness on the surface of the filtering

6

chuck 4, and cyclically with the inclusion of work as sediment accumulates on the surface of the cartridge.

The adjustment of the operating mode of the device is carried out using a sensor 8 mounted on the drain pipe 3.

To obtain the maximum effect when regenerating the filter cartridge, the gap between its inner surface and the output section of the nozzle should be equal to & 0, - - A, 8d, where d is the diameter of the nozzle 7.

Thus, the separation of the suspension under the action of centrifugal forces and the filtering method is carried out continuously without decreasing the productivity, and the filter cartridge is a continuously operating filter, from the surface of which the precipitate is removed continuously without interrupting the filtration process.

25

Claims (1)

Invention Formula A combined hydrocyclone comprising a cylindrical housing with a tangential inlet, a drain and Peskov nozzles, a central filter cartridge connected to a hydrocyclone drain pipe, a waste-wash device placed in a filter cartridge, characterized in that, in order to increase productivity by continuously removing sediment, a filter the cartridge is made in the shape of a truncated cone, with a large base facing the drain nozzle, the waste-wash device is made in the form of a central tube with nozzles installed along a helix perpendicular to the surface of the filter cartridge with a gap of $ 0.3 id-t, 8d, where d is the diameter of the nozzle, and the length of the nozzle increases in the direction of flow inside the cartridge. FIG. 2