Apparatus for thermal processing of food products in cans

FIELD: food-processing industry, in particular, thermal processing of food products.

SUBSTANCE: apparatus has upright casing with corrugated bottom, dividing and circulation partitions located within casing so as to define ascending and descending channels, inclined perforated guides fixed on upper ends of circulation partitions and above dividing partitions, charging and discharge devices. Heaters are positioned at corrugation sides defining bottom of ascending channels. Circulation partitions are made hollow and are connected with their upper ends to gas supercharger, which is positioned above liquid surface. Gate is positioned within discharge device for adjusting liquid flow rate.

EFFECT: reduced consumption of power for effective thermal processing of food products in metal hermetic cans.

1 dwg

 

The invention relates to heat treatment of food products and can be used in industries engaged in the processing and canning of food products in metal hermetically sealed cans.

Known devices of periodic action for sterilization of canned due to exposure to elevated temperatures with rotary principle of moving cans. The processed batch of cans, Packed in special containers, set using various mechanical auxiliary devices on the movable platform located inside the unit. The platform has the ability to navigate through a specially designed guide rails, mounted stationary in the housing of the apparatus. Then the whole party packages with stacked banks pressed on top of the retainer cap to the platform, forming with it a single movable unit, which is connected directly with the motor. Then the door of the autoclave is closed, the apparatus is served either steam or water and turns on the motor with a preset number of revolutions. All platform together with the container and banks revolves around a Central horizontal axis of the camera, which allows the rotation of the cans with the bottom on the cover" [1].

The frequency of action of the devices is a significant drawback for productions big Pro is socialnet.

Known apparatus of the continuous heat treatment of products in cans, comprising a vertical housing defined therein, with the formation of the ascending and descending channels, circulation and dividing partitions, loading and unloading devices, which account for a continuous supply of hot water provides greater efficiency of the process [2].

The closest in technical essence to the claimed technical solution is the apparatus of the continuous heat treatment of products in banks with vertical body with a corrugated bottom and installed it, with the formation of the ascending and descending channels, separation and circulation partitions with fixed on the upper ends of the circulation and above the dividing walls inclined perforated guides, as well as loading and unloading device, through the nozzles water and steam [3].

Due to the airlifting of transportation cans and regulation of steam content in the gas-liquid mixture through a continuous heat treatment process is contained in the banks of the product.

The efficiency of such a device is significantly reduced due to the complex design of perforated sections of corrugated bottoms that on the one hand, the Dol shall have to pass the high-pressure steam, but on the other hand to prevent the penetration through the same perforation under high water pressure. In addition, the successful operation of such apparatus assumes the existence of a sufficiently powerful steam generator with adjustable steam flow rate for different sizes of containers and devices for recycling exhaust steam discharged from the housing through one of the pipes.

To eliminate these disadvantages of the proposed apparatus for heat treatment of food products in cans, comprising a vertical body with a corrugated bottom and installed it, with the formation of the ascending and descending channels, separation and circulation partitions with fixed on the upper ends of the circulation and above the dividing walls inclined perforated rails, loading and unloading devices, while on the sides of the corrugations forming the bottom of the ascending channel, installed heaters, circulation partitions are made hollow and are connected by their upper ends with installed above the level of the liquid surface of the gas by the compressor, and the discharge device is placed valve with adjustable flow.

The technical effect of the proposed apparatus for heat treatment of food banks is to increase its energy e is efficiency, owing to the generation of steam for airlifting transportation of containers in the apparatus due to installed on the sides of the corrugations forming the bottom of the ascending channel heaters. Perform circulation hollow partitions and connecting their upper ends with installed above the surface of the liquid gas blower allows you to reuse the generated pairs and eliminates the need for its disposal. Accommodation in the discharge device, a valve to control the fluid flow allows, if necessary, to compensate for the loss of water to form a pair. The steam concentration in gas-liquid environments for different sizes of containers is regulated mode of operation of the heaters, which allow to avoid unnecessary energy losses, which is not possible when the supply of steam to the maximum possible temperature.

The drawing shows a vertical section of the device.

Apparatus for heat treatment of food products in cans includes a vertical housing 1 with a narrowing taper of the lower part 2, is made hollow circulator 3 and the separator 4 partitions forming ascending 5 and down 6 channels. The corrugated plate 7 in each section of the flute under a rising channel, a heater 8, and the circulation partitions 3 mounted on the top of their ends above the dividing walls 4 sloping perforated rails 9. Banks 10 enter the building through the loading device 13, and the exhaust steam is returned to circulation hollow walls by connecting their upper ends with installed above the surface of the liquid by the gas compressor 11. Mounting space 12 can be used to mount additional partitions heaters, and placed in the discharge device 14, the flap if necessary, adjusts the flow of liquid.

Operates the apparatus for thermal treatment of food products in banks as follows.

Through the loading device 13 when the valve is closed the discharge device 14 of the housing 1 is filled with water to the required level. Included with the heater 8 to heat water, generate steam. Vapor bubbles barbthroat in channels 5, creating in them the upward movement of the liquid-vapor mixture. Upon reaching the desired temperature and pressure in the apparatus is switched on, the gas compressor 11, which, gradually feeding the steam circulating in the hollow partitions 3, squeezes water from them and returns pairs in ascending channel 5. Opening the valve in the discharge device 14, simultaneously with the flow of water through the loading device 13 serves banks 10, intended for heat treatment. Once in the channel 6, 10 banks are moving in a downward flow along with the fluid gradually programa the . Reaching the bottom 7, cans roll down an inclined section of the flute and fall under the upward flow of the liquid-vapor mixture, which picks them up and moves to the top of the channel 5, where the separation of steam from water, and the Bank 10, due to the impact on it of inclined perforated rails 9, emitted into the next channel downdraft 6. Thus, the Bank 10 passes through a number of channels, the length and the number of which is determined from considerations of time of heat treatment. Getting into the last channel, the Bank lowered into the discharge device 14 and is pushed by the pressure in the apparatus and the forces of gravity. The influence of weight and size 10 banks on the residence time in the apparatus can be easily adjusted by the steam concentration in the upstream 5 by changing the mode of operation of the heater 8. This changes the rate of fluid flow in the channels 5 and 6. The gas compressor 11 through the hollow circular wall 3 returns pairs in ascending stream, providing reuse and thereby increasing the energy efficiency of the unit. The discharge valve device 14 to regulate the flow rate flowing out of the apparatus water, compensating consumption for evaporation and ensuring its level in the body 1, is required to eject the cans 10 from channel 5 to channel 6.

The design of equipment which allows you to simplify its design, to increase energy efficiency and to avoid the need to use a special device for the disposal of waste steam.

Sources of information

1. Poroshina V.L. Automatic rotary installation for sterilization of canned food. - M.: Food industry, 1958. - 240 S.

2. USSR author's certificate No. 86138, And 23 L 3/02, 1949.

3. USSR author's certificate No. 1517918, And 23 L 3/02, 1988.

Apparatus for heat treatment of food products in cans, comprising a vertical body with a corrugated bottom and installed it with the formation of the uplink and downlink separation and circulation partitions with fixed on the upper ends of the circulation and above the dividing walls inclined perforated rails, loading and unloading device, characterized in that on the sides of the corrugations forming the bottom of the ascending channel, installed heaters, circulation partitions are made hollow and are connected by their upper ends with installed above the level of the liquid surface of the gas by the compressor, and the discharge device is placed valve with adjustable flow.



 

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