RU72120U1 - INSTALLATION FOR PASTERIZATION OF LIQUID FOOD PRODUCTS - Google Patents

Abstract

1. Installation for pasteurization, containing pasteurization sections, cooling sections, regeneration sections, a cooler, an equalizer tank, inside which heaters are installed, a centrifugal pump, a check valve, a boiler, a control unit, characterized in that per section a throttle is installed for cooling, the pasteurization, regeneration and cooling sections are a package of heat exchange plates with dividing plates, and the dividing plates have lateral outlets for connection with ktsy between themselves and with nodes installation through the piping system, boiler lined with protective panels, and in the space between the walls of the boiler and is protective insulating panels material.2. The pasteurization installation according to claim 1, characterized in that it comprises a level sensor, which is located on the upper wall of the boiler, and whose function is to control the water level in the tank. The pasteurization installation according to claim 1, characterized in that an expansion tank and a safety valve are built-in in the hot water circulation line, which is designed to operate when the pressure inside the boiler is exceeded. Installation for pasteurization according to claim 1, characterized in that the platform has screw supports made with the ability to adjust the position of the installation when it is installed on site.

Description

Application area

The utility model is intended for pasteurization of milk, cream, drinking water at food industry enterprises.

State of the art

Currently, to create dairy plants of low productivity, which can be used on dairy farms of state farms, collective farms and farms, plants are needed that would require a short time for heating, exclude the formation of burning product and would not require the use of a large amount of energy. In all of the pasteurization-cooling plants discussed above, steam boiler rooms are used to generate hot steam used for the preparation of hot water. As a rule, there are no steam boiler houses on the farms of many state and collective farms, as well as on farms, but almost all of them have electricity. However, direct heating of milk with electric current is not possible. Heated by electric current through a heat transfer surface causes the risk of a strong burn with a small change in the pasteurization mode.

However, it is possible to use electrical energy to heat water and produce steam, which can be used in a pasteurization-cooling plant for producing pasteurized milk with the achievement of the following technical results by the invention:

- reduction of the heating time of the installation;

- exclusion of burnout on heat transfer surfaces.

Installation tubular pasteurization and cooling

Designed for heat treatment of milk in the production of sour-milk products.

The prior art various devices that are implemented on this basis. For example, a tubular pasteurization-cooling plant is known [1].

The plate apparatus is mounted on a bed mounted on a leg and has four sections: regeneration, pasteurization and heating. Sections assembled from corrugated heat exchangers

stainless steel plates.

Each section is separated from the other by a separation plate. Tightness in the apparatus is created by preloading the plates with a clamping device mounted on the pressure plate.

Raw milk from the storage tank for the electric pump is fed to the regeneration section, in which it is heated by pasteurized hot milk to 55 ... 60s and enters the milk separator. After cleaning, milk enters the regeneration section and then into the homogenizer.

Homogenized milk is returned to the pasteurization section, where it is heated with hot water to 90 ... 95 ° C. Milk heated to pasteurization temperature is fed for cooling in the regeneration section and then to the heating section, where the milk temperature is brought into line with the optimum temperature in the range of 20 ... 50 ° С

The disadvantages include a long time for heating the milk to the pasteurization temperature, large bath sizes, large weight, and short service life.

Also, various baths for pasteurization of milk are known from the prior art [2, 3].

Their common disadvantages include a long time for heating the milk to pasteurization temperature, large bath sizes, large weight, and short service life.

The prior art DEVICE FOR THERMAL PROCESSING OF MILK [4], including a heat exchanger, extractor, heat source, centrifugal milk cleaner and equalization tank, connected by pipelines with fittings, as well as means for monitoring, control and transportation of liquids, characterized in that the centrifugal milk cleaner installed in an insulated chamber, made in the form of a sealed cap with a door.

The disadvantages of this device include a long time for heating the milk to the pasteurization temperature.

The closest analogue is a PASTERIZATION-COOLING UNIT for heat treatment of liquid food products, mainly milk [5], which includes a heat exchanger with pasteurization, regeneration and cooling sections, a cooler, an equalizing tank and heat transfer pipes from the product and its outlet, it is equipped with an electric steam generator with pipelines for supplying steam to the heating part of the pasteurization section of the heat exchanger and removing condensate from it, at the electric steam generator is connected by pipelines with hydraulic locks with equalizing capacity

and with a processed product discharge pipe.

The disadvantages of this installation include a long time for heating the milk to pasteurization temperature, large installation dimensions, large weight, short service life.

The technical result of the utility model is to reduce energy consumption, maintains excess pressure of hot water and eliminates deformation and rupture of the walls of the tank.

Brief Description of the Drawings

Figure 1 shows the structural device of the pasteurizer (a - front view, b - top view), where 1 is the pasteurization section, 2 is the cooling section, 3 is the regeneration section, 4 is the restraint, 5 is the equalization tank, 6 is the centrifugal pump, 7 - check valve, 8 - platform, 9 - boiler, 10 - throttle, 11 - control unit, 12 - product temperature sensor at the outlet of the pasteurization section, 13 - checkpoint valve (type Du35), 14 - checkpoint valve (type Du25) , 15 - screw support, 16 - product temperature sensor at the outlet of the cooling section, 17 - electric contact pressure gauge, 18 - level sensor i, 19 - hot water circulation pump, 20 - expansion tank, 21-31 - pipeline, 32 - sampling valve, 33 - air outlet valve from the boiler, 34 - hot water main valve, 35 - water filling and draining valve, 36 - water flow control valve, 37 - ice water supply pipe, 38 - ice water pipe, 39 - hot water supply pipe, 40 - hot water return pipe, 41 - safety valve.

Device essence

The claimed technical result is achieved due to the fact that the pasteurization installation, containing fastened with screw connections on the platform: pasteurization section, cooling section, regeneration section, soaking-up device, equalizer tank inside which TEENs are installed, centrifugal pump, check valve, boiler, control unit , characterized in that a throttle is installed on the cooling section, the pasteurization, regeneration and cooling sections are a package of heat exchange plates with dividing plates, dividing plates have lateral outlets for connecting sections between themselves and with nodes by setting the piping system, boiler lined with protective panels, and in the space between the walls

boiler and protective panels is a thermal insulation material. The installation may contain a level sensor, which is located on the upper wall of the boiler, and whose function is to control the water level in the tank. An expansion tank and a safety valve can be integrated in the hot water circulation line, which is designed to operate when the pressure inside the boiler is exceeded. The platform may have screw supports, made with the ability to adjust the installation position when it is mounted on the site of operation.

The set of equipment for pasteurization (see Figure 1) is made in the form of an aggregate on a single platform 8. The installation consists of a pasteurization section 1, a cooling section 2, a regeneration section 3, a soaking-up unit 4, a surge tank 5, a centrifugal pump 6, a check valve 7, boiler 9, throttle 10, control unit 11, which are fixed with screw connections on the platform.

The platform 8 has a screw support 15, allowing you to adjust the installation position when it is mounted on the site.

The pasteurization, regeneration and cooling sections are a package of heat exchange plates, for example, type NT-90kl, with dividing plates. Dividing plates have lateral branches for connecting the sections to each other and to the installation nodes through a piping system.

Heat transfer plates are made in such a way as to provide a predetermined optimal organization of product, heat carrier and coolant flows during pasteurization. The arrangement and sequence of assembly-disassembly of heat-exchange plates and their seals does not affect the technical result, is not the subject of protection of this utility model and is not shown in the drawings. At the same time, the feasibility of this process is obvious to a person skilled in the art, since it is the usual assembly of heat transfer plates into sections and their compaction.

The boiler 9 is lined with protective panels. In the space between the walls of the boiler tank and the protective panels there is a heat-insulating material. Inside the tank, electric heaters (heating elements) are installed. Water is poured into the boiler tank through the faucet 35 with the faucet 34 closed and the faucet 33 open, which is subsequently heated by the heating elements. When the tank is filled with water, the taps 33 and 35 are closed, and the tap 34 is opened to provide circulation in a closed circuit. Heated water is supplied to the pasteurization section through line 39 and returned to the boiler through line 40 by pump 19. To maintain excess pressure of hot water and to avoid deformation and

rupture of the walls of the tank when heating and boiling water in the hot water circulation line, an expansion tank 20 and a safety valve 41 are built in, which works when the pressure inside the boiler exceeds 3 kg / cm2. The regulation of the flow of coolant is carried out by a valve 36.

The level sensor 17, which is located on the upper wall of the boiler, controls the water level in the tank and, when connected to the control unit 11, helps turn off the electric heaters when the water level in the tank drops below the permissible level. The electric pressure gauge is contact and 16 is mounted in the cover of the expansion tank 20, controls the pressure in the coolant line and turns off the heating elements at a pressure above 0.5 kg / cm2.

The product under pressure, providing the necessary performance, from the equalization tank 5, through a checkpoint valve 13 and a pipe 30 by a centrifugal pump 6 is supplied to the regeneration section 3 through the pipe 28, where the supplied product takes heat from the heated product, and then through the flange of the separation plate enters the section pasteurization 1.

Rising up the channels of the pasteurization section, the product is heated by hot water passing in the opposite direction along the parallel channels. Further, the product through pipeline 26 enters the non-return valve 7. In accordance with the signal from the temperature sensor 12, the product is directed by the valve to the containment device 4 via pipeline 25, or returns to the equalizing tank 5 through pipeline 27 and performs a repeated cycle. From the incubator, through the pipelines 24, 23, 22 and 21, the product enters the regeneration section 3, where, passing between the plates, it transfers heat to the product entering the regeneration section. Next, the product through the flange of the intermediate plate enters the cooling section 2, from where through the throttle 10 and the checkpoint valve 14 in the form of the finished product to the prepared container. The temperature of the chilled product is controlled by the sensor 16. The ice water supplied from the consumer cooling system to the cooling section, passing between the plates, is heated and returned back to the cooling system (or, if artesian water is used, it is drained into the sewer). To adjust the output volume of the product (installation capacity), a choke 10 is installed on the cooling section 2. When you turn the handle of the choke 10, the volume of product output increases or decreases. The supply of the product to the processing and release of the finished product is carried out through check valves 14.

The optimal use of heat with minimal loss follows from the fact that previously

the heated product in the pasteurization sections, then gives off heat to the product entering the regeneration section. Thanks to this, energy consumption is reduced. In the upper part of the holder 4 is mounted a valve 32 for sampling the product. For the circulation CIP washing of the installation, the design includes pipelines 29 and 31 with a through-tap, for example, of the type Du25, which must be closed during pasteurization of the product.

The pasteurization process is controlled by the control unit 11, mounted on racks that are attached to the platform 8. On the control unit 11, the pasteurization temperature range is set: the upper and lower channels of the temperature controller (for example, 78 ° C and 76 ° C) and the current product temperature. If the product temperature has not reached a lower temperature (for example, 76 ° C), then through the check valve 7 it returns to the equalizing tank 5 through line 21. When the product temperature reaches the lower temperature (for example, 76 ° C), then, by automatically switching the check valve 7, the product enters the customer’s receiving container through the choke 10. If the product temperature reaches the maximum temperature (for example, 78 ° C), the control unit 11 automatically reduces the power of the boiler’s electric heaters to prevent overheating of the product. Cooling section 2 provides cooling of the product when artesian or ice water is supplied at a product / water ratio of 1/3.

Information sources:

1. http://www.normit.ru/01_molochnaya/01_04_02.php#04

2. http://www.znpo.ru/equipment/v25.php

3. http://www.molmash.ru/products/tank/zl5.htm

4. patent RU 2007090

5. patent RU 2027372

Claims (4)

1. Installation for pasteurization, containing pasteurization sections, cooling sections, regeneration sections, a cooler, an equalizer tank, inside which heaters are installed, a centrifugal pump, a check valve, a boiler, a control unit, characterized in that per section a throttle is installed for cooling, the pasteurization, regeneration and cooling sections are a package of heat exchange plates with dividing plates, and the dividing plates have lateral outlets for connection with ktsy between themselves and with nodes installation through the piping system, boiler lined with protective panels, and in the space between the walls of the boiler and protective panel is thermal insulating material. 2. Installation for pasteurization according to claim 1, characterized in that it contains a level sensor, which is located on the upper wall of the boiler, and whose function is to control the water level in the tank. 3. The pasteurization installation according to claim 1, characterized in that an expansion tank and a safety valve are built-in in the hot water circulation line, which is designed to operate when the pressure inside the boiler is exceeded. 4. Installation for pasteurization according to claim 1, characterized in that the platform has screw supports made with the ability to adjust the position of the installation when it is installed on the site.