Weighing apparatus

FIELD: physics.

SUBSTANCE: weighing apparatus for weighing sticky and/or flexible material of a product such as fresh meat, marinated meat, poultry meat, fish and corresponding pieces and/or sticky materials, has a feeding device for feeding material of the product to be weighed, at least one proportioner for controlled delivery of portions of the material of the product from said feeding device to the weighing system. Said proportioner has a conveyor screw driven by a motor, made in form of a spiral-shaped rod and placed in an open trough for delivering material of the product from the feeding device to the weighing system and a control unit for controlling the motor so as to feed the required portion of the material of the product into the weighing system, wherein the connection between the conveyor screw and the motor has clip-on mechanism to simplify assembly, dismantling, cleaning and replacing the conveyor screw and/or core. EFFECT: possibility of smooth, accurate delivery of products which are not suited to vibration transportation or transportation by a conveyor screw, placed in a tubular casing.

15 cl, 3 dwg

 

The technical field to which the invention relates

The present invention relates to a weighing device such as multihead weigher, which contains the boot or storage bin (both will be referred to as the feed device for the material of the product is intended for weighing, and at least one dispenser, intended for controlled delivery of portions of product material from the handouts to the weighing system.

Background to the invention

Weighing devices of this type known to use dosing or portioning mechanism, consisting of a vibrating trays, placed in troughs intended for delivery of product material from the feeder to the weighing system and control of vibration in time and intensity in order to apply the desired portion of product material to the weighing system. Such weighing device can be used with a variety of material products, provided that these financial products can be delivered by the vibration sufficiently stable and organized manner. An alternative way to deliver the desired portions of product material to the weighing system is the use of a screw conveyor, cum�tion into the tubular casing, suitable for controlled conveying of granular or powder materials, such as, for example, known from the patent EP 1439379. However, the conventional screw conveyors have a relatively large mechanical stresses on the material of the product. Such mechanical effects, however, should be avoided when working with sensitive products. Thus, when working with sensitive, sticky and/or flexible material product, such as poultry, fish, fresh meat, marinated meat and related lump and/or sticky materials, no vibration, no screw conveyor material delivery of the product will not be sufficiently stable, clear and smooth and, thus, can not provide the required delivery of these types of products.

Description of the invention

The aim of the present invention is to offer a weighing device of the type mentioned above, which can provide a clear delivery of material products that are not suitable for vibratory movement, and this goal is attained by using a weighing device for weighing sticky and/or flexible material products, such as fresh meat, poultry, fish and related lumpy and/or sticky materials, which according to the present invention contain signs of islogin�e in paragraph 1. The specified device contains transport augers driven by a motor, made in the form having the form of a spiral rod and providing accurate delivery of product material from the feeder to the weighing system even in the case where the tangible product is sticky and/or flexible, or for other reasons not suitable for vibration of transportation.

The placement of the screw in the open chute provides smooth delivery without any significant mechanical impact or pressure on the material product.

Brief description of the drawings

The following detailed part of the present description the invention will be explained in more detail with reference to the example embodiments of the weighing system according to the invention shown in the drawings, in which:

Fig. 1 shows a top view of the feed device for the material of the product and eighteen transport augers driven by an engine placed in chutes for delivery of product material from the feeder to the weighing system (not shown);

Fig. 2 shows a view in cross section of the device of Fig. 1, made according to line a-A;

Fig. 3 shows a detail from Fig. 2 indicating an example of the connection between the engine and the transport auger.

Description of the preferred variants of realization of the Fig�"

The device shown in Fig. 1 comprises a feeding device 1 having eighteen dispensers 3, symmetrically arranged around the circumference of the feeder 1. Each dispenser 3 comprises a trough 4, which is placed in the transport screw 5 in the form having the form of a spiral rod driven by a motor 7 (see Fig. 3). Coaxially with the transport screw 5 is placed the core 6, which is considered optional, and the core 6 may have a diameter that is smaller than the inner diameter of the transport screw 5.

The feed device 1 which is shown in cross section in Fig. 2, comprises a conical Central bottom part 2, which provides the distribution of the product material in the direction of the outer wall 12 of the feeder 1. Conical Central bottom portion 2 of the feeder ends at a certain distance from the outer wall 12 of the feeder, and in between the product material falls into the individual troughs 4 which are placed in the transport screw 5 and possibly 6 core, designed to deliver a product from the feeder 1 in a controlled manner in order to give out controlled portions of a product material to the weighing system, located below the end of the chute 4.

Preferably having the shape of a spiral rod has along its length increasing step d�I improve smooth transportation of the material of the product.

As shown in Fig. 3, the connection between the motor 7 and the transport screw 5 includes a bushing 8, which is constantly, for example by welding, is connected to the transport screw 5, or perhaps the sleeve 8 may be combined in one piece with the core 6, if available. The sleeve 8 has a pin 9, which provides non-rotational connection is driven in rotation by the engine axis and the latch mechanism 10, for example, is provided with a spring and ball, and the said ball is pressed into the recess made in the axis of the engine.

In order to avoid leakage of product material from the chute 4 into the inner part of the engine compartment, between the motor axle and the rear wall of the trough 4 is placed a packing gland 11.

The installation of the motor 7 and the possible use of additional bearings for the axis of said motor is provided in the usual way and do not require detailed explanation in this regard.

Components that are in contact with the product material, preferably made of stainless steel, but for various reasons there are variety of other materials, such as plastics, etc.

Shows the device operates as follows. Product material intended for weighing, controlled manner is delivered to the feeding device in order to maintain overall pic�permanent level of product material specified in the feeder 1. The product material is distributed over the individual dispensers 3 with the conical Central part of the bottom 2 of the feeder. Between the individual troughs 4 of the spout 3 may be provided with suitable inclined surface to guide the product material in individual troughs 4. The dispenser 3 allocates a certain portion of product material to the weighing signals of the overall management system of weighing devices. Controlled, clearly defined portion shall be issued at a controlled speed of rotation of the motor 7 during a given period of time. To optimize dosing subsequent weigh-issued portion is used for regulating the time period and/or the rotation speed of the engine to regulate the dosing of the product for each individual dispenser 3.

Typical values of the speed of rotation of the transport screw 5 is 10-100 rpm and the typical duration is from 50 to 2000 MS.

Subsequent weighting and combining dosed partial portions in the end portions should be as close to the desired weight of the end portions by connecting a certain number of dosed and balanced portions, which is well known in the art and need no further children�the pole.

Above the invention has been described and explained in connection with specific option for its implementation, as shown in the drawings, but the skilled in the art obvious possibility of many options without deviation from the following next of the claims. Among such natural variation has a different number of dispensers 3, the use of 6 cores with a smaller diameter or total exclusion of 6 cores, and the possibility of core 6 with a different outer shape different from the cylindrical shape shown in the drawings. In addition, the core may remain stationary during rotation of the transport screw 5 instead of rotate synchronously with the transport screw 5. Will also be obvious that the hole in the side 12 of the feeding device 1, through which nominated the chute 4, so you have to adapt to the material of the product, which is delivered by a spout.

1. Weighing device for weighing sticky and/or flexible material product, such as fresh meat, marinated meat, poultry, fish and related lump and/or sticky materials containing a feeding device for the material of the product to be weighted, metering devices, intended for controlled delivery of portions of product material from the specified feeder to the weighing system, these dispensers �will win transport auger driven by the motor, made in the form having the form of a spiral rod and placed in an open trough for delivery of product material from the feeder to the weighing system, and a control unit designed to control the engine in order to apply the desired portion of product material to the weighing system, and the connection between the transport screw and the engine comprises a clip mechanism to facilitate the Assembly, disassembly, cleaning and replacement of the transport auger and/or core, and the feeding device includes having a conical shape of the Central bottom portion that displays product material radially outward to multiple dispensers placed in a circular pattern around a conical bottom.

2. Weighing device according to claim 1, wherein said shaped spiral rod has along its length increasing step.

3. Weighing device according to claim 1 or 2, which also contains a core, placed inside the auger, wherein the said core has a diameter that is less than or equal to the inner diameter of the transport screw.

4. Weighing device according to claim 3, wherein said core is generally cylindrical in shape.

5. Weighing device according to claim 3, wherein said core is rotated synchronously with the transport auger.

6. Weighing device�about by p. 3, wherein said core remains stationary.

7. Weighing device according to claim 3, wherein said core has a grooved outer surface.

8. Weighing device according to claim 3, wherein said core is removable in order to facilitate the acquisition of various diameters for delivery of various products and/or achieve different speeds of delivery.

9. Weighing device according to claim 1, wherein said chute includes a bottom portion having a cylindrical shape with a diameter equal to or larger than the outer diameter of the transport screw.

10. Weighing device according to claim 9, wherein said chute passes through a hole in the side of the feeder.

11. Weighing device according to claim 1, wherein the motors for the drive of the transport screws are located under the conical bottom feeder.

12. Weighing device according to claim 1, in which the speed and time of rotation of said motor provides device management.

13. Weighing device according to claim 12, wherein said control device is attached for information about the weight of portions of the material and is arranged to control the speed and/or time of rotation depending on it.

14. Weighing device according to claim 1, in which� the specified device contains 2-40 dispensers, such as 2-4, 4-8, 8-16, 16-40, for example 10-20, 20-40, preferably 16 or 18 dispensers.



 

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