SU1330150A1 - Precoat frame filter for food liquids - Google Patents

Abstract

The invention relates to equipment for filtering food liquids, preferably beer. The purpose of the invention is to reduce the consumption of auxiliary filtering material. , To regulate the dosing of an aqueous suspension of an auxiliary substance, the dosing pump of an aqueous suspension of auxiliary filtering material (VSWFM) is made in the form of a diaphragm pump with a dispenser chamber 11 and a pneumatic chamber with membranes 12 and 13. The cavities 14 and 15 formed in a pneumocamera with a membrane 13 communicated with a source of compressed air. The membrane 12 is rigidly connected by the stem 17 to the membrane 13. The ratio of the areas of the working surfaces is from 1: 1.3 to 1: 1.6. With the alternate supply of air in the cavities 14 and 15 under the action of the pressure difference, suction and injection into the filter VSVFM occurs. As the pressure increases in the filter. the number of HIPFM decreases. Filter plates with a clamping mechanism are movably mounted between the pressure and stop plates of the filter. VSWFM is prepared in a mixer. The filtered liquid is pumped through pipelines. 2 Il. (L 1sl with SP

Description

The invention relates to equipment for filtering food liquids, preferably beer.

The purpose of the invention is to reduce the consumption of auxiliary filtering material by adjusting the dosage of the aqueous suspension of the auxiliary substance.

FIG. 1 shows a pre-filter for food liquids, a general view; figure 2 - pump dosing water suspension auxiliary filter material.

The filter consists of pressure plate 1 and pressure plate 2 mounted between them on support beams 3 with the possibility of reciprocating movement of filter plates 4 and frame 5, plate clamping mechanism 6, mixer 7 for preparing an aqueous suspension of filter media dispenser 8 aqueous suspension of auxiliary filtering material, pump 9 supply of filtered liquid and system

pipelines 10.

The metering pump 8 is made in the form of a membrane pump and contains a metering chamber 11 with a membrane 12 and a pneumatic chamber divided by an additional membrane 13 into two cavities 14 and 15, each of which has an opening 16 for supplying compressed air from its source (not shown) . The membrane 12 of the metering chamber 11 is rigidly connected by the stem 17c with an additional membrane 13. The ratio of the working surfaces of the membranes 12 and 13 is from 1: 1.3 to 1: 1.6.

Dosing chamber 11 is equipped with a suction and discharge valves 18 and 19. Between the plates and the frames placed support cardboard 20.

The precoat filter works as follows: a hard compressed air source

in a way.

The filter and lines 10 are filled with water, and air is displaced from the filter chambers. In the mixer 7, an aqueous suspension of auxiliary filtering material is prepared and is fed by a pump 9 to a filter for applying the auxiliary substance to the support board placed between the slabs and the frames. Then the filtration process begins. The beer, passing through the excipient layer, is clarified. During the entire filtration period, the current dosage is carried out.

0

15

0

about

25

35

YU

the introduction of the excipient into the flow of the liquid to be filtered by means of a dispenser 8.

The metering pump 8 operates as follows.

Air under pressure is alternately supplied to cavities 14 and 15 of the pneumatic chamber through opening 16. When pressure is applied to cavity 14, cavity 15 is connected to the Underpressure region; when pressure is applied to cavity 15, cavity 14 is connected to a reduced pressure area,

Under the action of the pressure difference in the cavity 14 and 15 of the pneumo-chamber of the brush 17c, the membranes 12 and 13 move. When the stem 17 is moved to the left, the aqueous suspension is suctioned: auxiliary filter material, and when the rod 17 is moved to the right, it is forced. During pressurization, the stem 17 is acted upon by forces from the membrane 13 and the membrane 12 of the metering chamber, which is affected by the pressure in the filter, which increases during its operation. Thus, the rod 17 moves under the action of a resultant force, which decreases as the pressure in the filter increases. As a consequence, the magnitude of the stroke of the injection pump rod 17 is reduced and the volume of the aqueous suspension of auxiliary filtering material introduced into the filter is reduced in proportion to it.

The dosing pump for the aqueous suspension of the auxiliary filtering material of the pre-casting frame filter for food liquids in the form of a membrane pump with a dosing chamber and a pneumatic chamber divided by an additional membrane into two cavities, each of which communicates with

The connection of the membrane by the dosing chamber with the stem with the additional membrane and the ratio of their working surfaces from 1: 1.3 to 1: 1.6 ensures a reduction in the flow rate of the auxiliary filtering material by adjusting the dosing of the aqueous suspension of the auxiliary substance.

Claims (1)

Invention Formula Frame alluvial filter for food liquids, mainly for beer, containing pressure and resistant  -1330 plates mounted between them on support beams with the possibility of returnable displaceable movement of filter plates and frames, plate clamping mechanism, mixer for preparation, water suspension of auxiliary filtering material, pump of a suspension of auxiliary filtering material, feed pump IQ of the liquid being filtered and the system pipelines, characterized in that, in order to reduce the consumption of auxiliary filtering material 75 fi & 2 Compiled by A. Gorbachev Editor N.Kishtulinets Tehred A. Kravchuk 50 ala, dosing pump for water suspension; the auxiliary filtering material is made in the form of a membrane pump with a dosing chamber and a pneumatic chamber, the latter being divided by an additional membrane into two cavities, each of which is connected to a source of compressed air, the membrane of the dosing chamber is connected to the dosing chamber with an additional membrane the surfaces are from 1: 1.3 to 1: t, 6. Proofreader L. Patay Order 3538/26 Circulation 499 Subscription VNIIPI iState Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., A