RU2454859C1 - Double-stage milk filter - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture, in particular, to devices ensuring milk quality and may be used in dairy production. A filter comprises a body 1 of conical shape with a tangential inlet nozzle 2, at the level of which there is a rotary impeller 3 mounted. In the body 1 there is a plate 4 with ribs, which form guide chambers 5. In the upper part of the body 1 there is a filtering element 6 with a lattice 7 and a nozzle 8 with an outlet nozzle 9. Between the body 1 and the nozzle 8 there is a membrane 11 installed as capable of displacement under milk pressure or a spring 10, and the membrane 11 includes a plunger 12 mounted in it and having output holes 13 and an end part 14, arranged in the form of a cone. To the lower part of the body 1 there is a detachable cylindrical settling tank 15 attached with a valve unit of double action 16 mounted in it and controlled with the help of a rotary lever 17. The cover 18 has a dirt-draining nozzle 19, through which dirt deposits are removed from the settling tank 15 into a collecting reservoir or sewage as the rotary lever 17 is installed into a horizontal position. As the lever 17 returns into the initial position, the spring 20 raises the valve unit 16 into an upper position, providing for repeated accumulation of dirt in the settling tank 15.

EFFECT: invention makes it possible to increase efficiency of milk treatment process, to preserve high-quality parameters of milk, to reduce labour inputs.

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Description

FIELD OF THE INVENTION

The invention relates to agriculture, in particular to devices for ensuring the required quality of milk, and can be used in dairy production.

State of the art

A device for filtering and gravitational cleaning of milk, containing a housing with a sump, inlet and outlet pipes, a mesh disk with a filter element (see Belyavsky Yu.I. Industrialization of dairy cattle breeding. - M .: Rosselkhozizdat, 1984, p.270).

Its disadvantage is that it requires periodic cleaning of the housing from contamination.

Known filter trap, made in the form of a vertical cylindrical filtering surface with a jacket around it and a lower conical part for sludge, and the filter trap is equipped with a brush device rotating with a separate drive with a blade screw (see AS USSR No. 104520, cl. 12d, 1562, 1950).

Its disadvantage is the need to create a forced reverse fluid flow to flush the filter surface, which complicates its design.

It is also known "Device for automatic washing of filters", containing a cylinder with an injection piston, the rod of which is loaded with a spring to lower it to flush the filter with a reverse fluid flow, and the piston is raised by coupling with a gear rack with a half gear connected through a system of worms with a bevel gear, driven in rotation from the shaft of the fluid supply pump. The device has several options (see A.S. USSR No. 599597, 1937).

This device has a complex structure, has a high cost and low operational reliability due to the large number of components with unsatisfactory quality of liquid purification from small particles.

The closest in technical essence and the achieved positive effect and accepted by the authors for the prototype is the "Milk Purification Device", made in the form of a conical shape with an inlet pipe tangentially located to it and mounted under the mesh of the filter element of the rotating impeller, a conical plate having ribs on the outer surface, nozzles with a direct outlet pipe and a spring-loaded piston-type valve located in it, a cylindrical sump with a tap and spring-loaded conical plug (see No. 94031445/13 (031325)).

Its disadvantages are:

- the deterioration of the technological properties of milk due to structural changes in its fat phase due to mechanical stresses as a result of a sharp change in the direction of milk flow when it enters the outlet pipe and passes through it;

- the need for disassembly for periodic removal of sludge from the sump.

Disclosure of invention

The objective of the invention is to develop a two-stage filter designed to remove mechanical impurities from milk in order to improve cleaning efficiency, preserve the quality and technological properties of milk, as well as reduce labor costs.

The technical result that can be achieved using the proposed invention is to increase the efficiency of the process of milk purification and preserve its quality indicators, reduce labor costs.

The technical result is achieved using a two-stage milk filter, comprising a housing with an inlet nozzle tangentially located to it, a nozzle with an outlet nozzle, a spring-loaded diaphragm with a plunger, a conical plate with outer ribs, a mesh, an impeller, a filter element, a removable cylindrical sump with a cover and a dirt pipe , a double-acting spring-loaded valve block controlled by a pivot arm.

Brief Description of the Drawings

Figure 1 shows a General view in the vertical plane of the section.

In Fig.2 - the initial position of the diaphragm and plunger.

Figure 3 - position of the diaphragm and plunger when cleaning milk.

Figure 4 - position of the diaphragm and plunger with a reverse milk flow.

The implementation of the invention

The two-stage milk filter contains a conical shaped housing 1 with an inlet pipe 2 tangentially positioned to it, at the level of which the impeller 3 is mounted for rotation; a plate with outer ribs 4 is placed in the housing 1, which forms the guiding chambers 5 with the walls of the housing 1; in the upper part of the housing 1 there is a filter element 6, limited from below by a mesh 7, and a nozzle 8 with an outlet pipe 9; between the housing 1 and the nozzle 8 is placed and moves under the action of the pressure of the milk or the spring 10, the diaphragm 11 with a plunger 12 mounted therein, having outlet openings 13 and an end part 14 made in the form of a cone; to the lower part of the housing 1 is attached a removable cylindrical sump 15 with a double-acting valve block 16 mounted therein, the rod of which is connected to the pivoting lever 17; the removable cylindrical sump 15 is provided with a cover 18 with a dirt pipe 19 and a spring 20, worn on the rod of the double-acting valve block 16.

Two-stage milk filter works as follows. The initial position of the diaphragm 11 and the plunger 12 is shown in figure 2. When the milk pump is turned on (not shown in Fig.), Milk passes through the inlet 2 into the housing 1 and passes through the grid 7, in which large particles of contaminants are retained (the 1st cleaning stage), and through the filter element 6, where it is finally cleaned (2nd stage of cleaning). The tangential input of milk into the housing 1 ensures the rotation of the impeller 3, the blades of which move large particles of contaminants from the mesh 7 to the periphery of the housing 1, where they move along the guide chambers 5 between the inner surface of the housing 1 and the outer surface of the plate with outer ribs 4 and settle in a removable cylindrical sedimentation tank 15. Thus, large mechanical impurities are constantly discharged into a removable cylindrical sedimentation tank 15, and therefore are not exposed to the subsequent flow of milk and are not washed away than dotvraschaetsya getting into the milk microorganisms contained therein. The milk that has passed through the filter element 6 enters the plunger 12 and, due to the pressure, ensures its rise together with the diaphragm 11 to its highest position, which ensures that the outlet openings 13 enter the expanded part of the outlet pipe 9 and the milk exits the filter with a minimum change in the direction of milk movement and the exclusion of mechanical influences on it, which also contributes to the end part 14 of the plunger 12, made in the form of a cone (figure 3). When the milk supply is stopped, the diaphragm 11 returns to its original position under the action of the spring 10 and when the outlet openings 13 of the plunger 12 exit from the expanded part of the outlet pipe 9, it squeezes part of the milk in the opposite direction (Fig. 4), which, passing through the filter element 6 and the mesh 7 , washes away from them the retained particles of contaminants that fall into the cavity of the plate with the outer ribs 4 and further into the removable cylindrical settler 15. Thus, there is a continuous and automatic cleaning of the filter element 6 and mesh 7 ie pollution when operating a two-stage filter milk. The presence of the first stage of milk cleaning from large mechanical impurities with their constant drainage and collection in a removable cylindrical sump 15 reduces the load on the filter element 6 and contributes to the production of milk of higher grades in purity.

To remove impurities from the removable cylindrical sump 15, the pivot arm 17 is installed in a horizontal position, which allows the double-acting valve block 16 to move to the lower position and the impurities to exit through the dirt outlet pipe 19 to the collection tank (not shown in Fig.) Or sewage. When the pivot arm 17 returns to its original position, the spring 20 raises the double-acting valve block 16 to the upper position, which contributes to the re-accumulation of contaminants in the removable cylindrical settler 15.

The invention in comparison with the prototype and other known solutions provides:

- receipt of milk of the 1st purity group due to two-stage purification and continuous collection of contaminants in the sump;

- preservation of the technological properties of milk by eliminating structural changes in its fat phase;

- the possibility of use in production and technological lines with continuous operation.

Claims (1)

Two-stage milk filter containing a conical shape with an inlet pipe tangentially located to it, a nozzle with an outlet pipe, a conical plate with outer ribs, a mesh, a rotating impeller, a filter element and a removable cylindrical settler, characterized in that a spring-loaded diaphragm is installed between the body and the nozzle with a plunger mounted in it, having outlet openings in the upper part and an end part made in the form of a cone, and the cylindrical sump is equipped with a removable cover with a dirt branch pipe and a double-acting valve block, the rod of which is connected with a rotary lever.

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