SU1277994A1 - Apparatus for filtering and squeezing out - Google Patents

Abstract

The invention can be used in the chemical as well as in other areas of industry in the separation of suspensions with a crystalline solid phase. The purpose of the invention is to reduce the moisture content of the separated solid phase and increase plant capacity. The device comprises a filtration chamber 2, a tapered adapter 3, an extraction chamber 4 made of a set of round rods 7, a worm shaft (CV) 12, a spring-loaded shut-off cone 13, a sludge discharge chamber 10. The positive effect is due to the installation of two successively located chambers 5 and 6 at the outlet section of the extraction chamber 4, which are separated from each other by 0.1-0.3 steps of the FW 12, which allows the gas flow from the chamber 5 which is under the excess pressure of a neutral gas, into the vacuum chamber 6, penetrate the entire thickness of the formed sediment. The suspension from the filtration chamber 2 is fed with the aid of ΦV 12 into the extraction chamber 4, where it is further dehydrated, and worn due to the extraction of excess moisture from the solid phase, as well as due to the removal of moisture from the threshold space by the gas flow between the chambers 5 and 6 . The dehydrated solid phase squeezes out the stop cone 13 and through the resulting calcium gap enters the sludge discharge chamber 10. 2 Il. i (L to; about with suj;

Description

one

The invention relates to the field of filtration, is intended for filtering and pressing suspensions, and can be used in the chemical as well as in other industries in the separation of suspensions with a crystalline solid phase.

The purpose of the invention is to reduce the moisture content of the separated solid phase, increasing the productivity of the device.

FIG. 1 shows a device for filtering and pressing; in fig. 2 is a section A-A in FIG. 1.

The device has a housing 1 comprising a filtration chamber 2, an adapter 3 made in the form of a truncated cone interconnecting the filtration chamber 2 and the extraction chamber 4. The pressing chamber 4 is enclosed in two successively located gas supply chambers 5 and vacuum 6 and is made of a set of round cross-section rods 7 installed with a gap in its outlet section and without gaps in the area between chambers 5 and 6. Chamber 5 has a port 8 which serves to supply neutral gas, and the evacuation chamber 6 through the pipe 9 is connected to a vacuum collector (not shown). A sludge discharge chamber 10 is connected to the pressing chamber 4, in which an overpressure can be generated by supplying neutral gas through the nozzle 11. Inside the housing there is a worm shaft 12 with a spring-loaded locking cone 13 mounted on its output end. The housing 1 is equipped with a nozzle 14 for loading the suspension. The pipe 15 serves to drain the filtrate, and the pipe 16 to connect the sludge discharge chamber 10 to the sludge collector (not shown).

YcTpoilcTBO works in the following way.

The suspension is fed to the pipe 14 and enters the filtration chamber 2. Due to the overpressure, the suspension is filtered through a filter septum, and a precipitate layer is formed on the inner surface of the filter septum. The worm shaft 12 continuously cuts off the precipitate that forms. Getting into the adapter 3, the sediment partially dehydrated 779942

This is due to a change in the interturnal space of the worm shaft. With further advancement of the sediment by the worm shaft 12 in the chamber 4 pressing

5, the sludge is further dewatered due to compression pressing, warming up due to the partial conversion of the mechanical rotational energy of the worm shaft to the left left energy of the rubbing solid particles of the suspension, as well as gas flows due to the pressure difference between the cavities of chambers 5 and 6, separated by

15 with another section of the pressing chamber, on which the rods are installed without gaps and which has an extension along the axis of the device within the range of 0.1-0.3 steps of the worm hole shaft. When a certain value is reached, the compression force developed by the turns of the worm shaft 12 and determined by the pressure of the preload of the locking cone 13, its resistance,

25 (| nziko-mechanical properties of the solid phase, pressure drop between the discharge chamber 10 and the cavity of the jacket 6, the sediment is squeezed out through an annular gap forming between the stop cone 13 and the housing 1. When the device is operated, the sludge is further dehydrated due to the gas flow through the formed annular gap due to the pressure difference between the chamber 10, the discharge of sediment and the cavity of the chamber 6.

35

Such a constructive solution of the spinning device allows to increase productivity and reduce the humidity of the resulting product, thereby reducing energy costs in the subsequent stages of drying the product.

Claims (1)

1 The invention relates to the field of filtration, is intended for filtering and pressing suspensions, and can be used in the chemical as well as in other industries in the separation of suspensions with a crystalline solid phase. The purpose of the invention is to reduce the moisture content of the separated solid phase, to increase the productivity of the device. FIG. 1 shows a device for filtering and pressing; in fig. 2 is a section A-A in FIG. 1. The device has a housing 1 comprising a filtration chamber 2, an adapter 3 made in the form of a truncated cone interconnecting the filtration chamber 2 and pressing chamber 4. The pressing chamber 4 is enclosed in two successively located gas supply chambers 5 and vacuum 6 and is made of a set of round cross-section rods 7 installed with a gap in its outlet section and without gaps in the area between chambers 5 and 6. Chamber 5 has a port 8 which serves to supply a neutral gas, and the evacuation chamber 6 through the pipe 9 is connected to a vacuum collector (not shown). A sludge discharge chamber 10 is connected to the pressing chamber 4, in which an overpressure can be generated by supplying neutral gas through the nozzle 11. Inside the housing there is a worm shaft 12 with a spring-loaded locking cone 13 mounted on its output end. The housing 1 is equipped with a nozzle 14 for loading the suspension. The pipe 15 serves to drain the filtrate, and the pipe 16 to connect the sludge discharge chamber 10 to the sludge collector (not shown). YcTpoilcTBO works in the following way. The suspension is fed to the pipe 14 and enters the filtration chamber 2. Due to the overpressure, the suspension is filtered through a filter septum, and a precipitate layer is formed on the inner surface of the filter septum. The worm shaft 12 continuously cuts the resulting sediment. Once in the transition 3, the sediment is partially dehydrated42 by changing the inter-turn space of the worm shaft. With further advancement of the sediment by the worm shaft 12 in the pressing chamber 4, further sludge dewaters due to compression wringing, warming up due to partial conversion of the mechanical rotational energy of the worm shaft to the thermal energy of the solid particles of the suspension, as well as due to gas flows the pressure difference between the cavities of chambers 5 and 6, separated from each other by a section of the pressing chamber, on which the rods are installed without gaps and which has an extension along the axis of the device in elah range 0.1-0.3 step worm shaft. When a certain value is reached, the compression force developed by the turns of the worm shaft 12 and determined by the pressure applied by the shut-off cone 13, its resistance (solidification, pressure drop between the discharge chamber 10 and the cavity of the jacket 6) causes the sludge to be squeezed out through the annular the gap formed between the shut-off cone 13 and the housing 1. When the device is operated, the sludge is further dehydrated due to the gas flow through the annular gap formed due to The differential pressure between the chamber 10 unloading sediment and the cavity of the chamber 6. This design solution of the spinning device allows to increase productivity and reduce the humidity of the resulting product, thereby reducing energy costs at subsequent stages of drying the product. filtering and spinning chamber, made of a set of round cross-section rods installed with gaps in its outlet section, a worm shaft, at the discharge end of which olozhen spring-loaded shut-off cone, distinguishing with the fact that, in order to reduce moisture and increase sludge proizvoditel312779944 it is equipped with a vacuum chamber, a distance one from the drugan, and a gas supply chamber, 0.1-0.3 steps of a worm shaft, and therefore installed in the rods between the springs of the spin chamber These cameras are installed closely.