JPH0148726B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an apparatus for immersing a poultry carcass in cold water and cooling it while transporting it together with the cold water. The present invention relates to a cooling conveyance device that is installed in a waterway and rotates screw blades around an axis to promote water flow and convey carcasses along with the water flow.

[Prior Art] This type of cooling conveyance device is called a screw chiller or a spiral chiller, and FIG. 3 is a partially cutaway perspective view schematically depicting a conventional example.

A waterway is constituted by a half-cylindrical water tank 1.
W indicates the water surface. A spiral screw blade 2 is provided therein, and while rotating it as shown by arrow A, a carcass is thrown in as shown by arrow B, and at the same time, cold water is poured in, and if necessary, ice cubes are thrown in.

The injected cold water and carcass are conveyed in the direction of arrow C by screw blades 2, and the carcass is cooled by being stirred in the cold water.

[Problems to be solved by the invention] However, in the above-mentioned conventional screw chiller, (a) the carcass is conveyed while floating up and down in cold water, resulting in poor cooling efficiency and, in addition, uneven cooling; tends to occur.

(b) A large number of carcasses may float together in one place, and the torque required to drive the screw blades is large. In addition, the carcass is likely to come into strong contact with the screw blades and be damaged.

(c) Since the waterway is open, it is not possible to simultaneously carry out treatment such as disinfection using gas (e.g. ozone) while transporting and cooling. Furthermore, if the screw blades rotate too quickly, water droplets will scatter, making the working environment worse.

The present invention has been made in view of the above-mentioned circumstances, and its objectives are (a) to allow the entire surface of the carcass to come into good contact with cold water, so that it can be cooled with high efficiency without causing uneven cooling; (b) A large number of carcasses do not float together, the screw blade receives less resistance, and the required driving force is small; (c) there is no risk of damage to the carcass; (d) gas treatment is possible. The object of the present invention is to provide a cooling and transporting device for poultry that is suitable for parallel processing, (e) is free from the risk of water droplets being scattered even when screw blades are rotated at high speed, and is suitable for maintaining a working environment.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the cooling conveyance device of the present invention rotates a spiral screw blade in a waterway to promote water flow, and transports poultry carcasses along with the water flow. In the device for transporting and cooling the carcass, most of the water channel has a right cylindrical shape concentric with the screw blade, and the water level within the right cylindrical portion fills the inside of the right cylindrical portion. It is characterized by Majority of the above shall mean at least half of the length of the watercourse.

[Operation] According to the above configuration, most of the waterway (1/2 or more)
The cylinder is sealed and the space inside the cylinder is filled with water, so the carcass is completely submerged in the water without floating up or down. (a) As a result, the carcasses are cooled evenly and with high efficiency; (b) the carcasses do not bunch up and float, so the screw blades do not receive uneven resistance and the required driving force is small; (c) the carcasses are (d) Since most of the waterway is sealed, it is suitable for parallel processing with gas; (e) Most of the waterway is sealed, so it can be transported smoothly and there is no risk of damage. Because of this, water droplets do not scatter even when the screw blade is rotated at high speed.

[Embodiment] FIG. 1 is a vertical sectional view schematically depicting an embodiment of the present invention, and FIG. 2 is a plan view.

Reference numeral 3 denotes a cylindrical waterway, and most of its length (approximately 4/5 in this example) is constituted by a right cylindrical portion 3a, and its upstream end (right end in this example) is a tapered portion 3a.
It is connected to the large diameter portion 3c via b.

4 is a screw blade, whose central axis is a hollow shaft 4
It is composed of a. The right end portion 4b has a large diameter corresponding to the tapered cylindrical portion 3b and the large diameter cylindrical portion 3c.

A carcass inlet 5 is provided on the top surface of the large diameter portion 3c. The downstream end (left end in the figure) of the right cylindrical portion 3a opens into the water tank 7.

8 is a scraping conveyor installed in the water tank 7.

A water supply port 9a is provided in the large diameter portion 3c of the water channel, and a drain port 9b is provided in the water tank 7,
Cold water flows from the right side of the diagram to the left side. The screw blade 4 is rotationally driven in a direction that promotes the water flow.

An input port 5 is provided at the upper part of the large diameter portion 3c of the waterway, and this large diameter portion 3c forms a carcass input tank. This large-diameter cylindrical charging tank is equipped with water level control means.

The illustrated numeral 10 indicates the position of the water level control means (for example, an overflow pipe).

The water level control means is provided near the highest point in the middle of the tapered portion 3b (meaning the middle in the axial direction), and controls the water level W' to be around this point.

Since the above-mentioned control water level is located above the right cylindrical portion 3a (more specifically, above the highest point within the right cylindrical portion 3a), the inside of the right cylindrical portion 3a is filled with water.

Bearings 11a and 11b are provided near both ends of the hollow shaft 4a, and rotatably support the hollow shaft 4a. No bearing is provided near the center of the hollow shaft 4a.

Since this hollow shaft 4a is held in water and receives buoyancy, even if the central portion is not held, the central portion does not tend to sag downward. For this reason,
There is no risk that the central bearing (not provided) will interfere with water flow or transport the carcass.

The input port 5 is provided in the large-diameter portion 3c of the cylindrical waterway 3, and since this portion has a large diameter, it is easy to input the carcass (or ice cubes if necessary).

The carcass sent along with cold water to the left in the figure is discharged into a water tank 7 and carried out by a scraping conveyor 8.

Since the inside of the right cylindrical portion 3a is filled with cold water, the entire surface of the carcass being transported therein comes into contact with the cold water. Therefore, the carcass can be cooled with high efficiency and even cooling. Also, since the carcass is completely immersed in the cold water, it is transported evenly distributed in the cold water flow, rather than floating in one place. As a result of this uniform distribution, the conveyance is smooth, the screw blades are not subjected to uneven resistance, so only a small amount of power is required, and there is no risk of damage to the carcass.

[Effects of the Invention] As detailed above, according to the cooling conveyance device of the present invention, (a) the entire surface of the carcass is brought into good contact with the cold water, and the carcass is cooled with high efficiency without uneven cooling; (b) The required driving force is small because a large number of carcasses do not float together and there is little resistance to the screw blades, (c) There is no risk of carcasses being damaged, and (d) Processing with gas is possible. (e) It has an excellent practical effect in that there is no risk of water droplets being scattered even when the screw blade is rotated at high speed.

[Brief explanation of drawings]

FIGS. 1 and 2 show one of the cooling conveyance apparatuses of the present invention.
An example is shown in which FIG. 1 is a schematic vertical sectional view and FIG. 2 is a plan view. FIG. 3 is a partially cutaway perspective view of a conventional cooling conveyance device. 3... Cylindrical waterway, 3a... Right cylindrical part, 3b...
Tapered part, 3c...Large diameter part, 4...Screw blade, 4a...Hollow shaft, 5...Carcass inlet, 7...
... Water tank, 8 ... Scraping conveyor, 10 ... Water level control means.

Claims (1)

[Claims] 1. A spiral screw blade is installed in a waterway,
In a device that rotates the screw blade around an axis to promote water flow, transports a poultry carcass with the water flow, and cools the carcass, most of the water channels have a right cylindrical shape concentric with the screw blade. and
A device for cooling and transporting poultry, characterized in that the water level in the right cylindrical portion fills the inside of the right cylindrical portion. 2. The shaft of the screw blade has a hollow tubular shape, and both ends thereof are supported by bearings, and there is no bearing near the center part. The described cooling and transporting device for poultry. 3. The downstream side of the right cylindrical waterway opens into the water tank, and the upstream side of the right cylindrical waterway is expanded into a tapered shape and connected to a large diameter cylindrical input layer,
2. The cooling and transporting device for poultry as claimed in claim 1, wherein the input layer has a carcass input port provided at its upper part. 4. The charging tank is equipped with a means for controlling the water level in the charging tank, and the controlled water level of the control means is located above the highest point in the right cylindrical waterway. A cooling and transporting device for poultry as claimed in claim 3.