EA008319B1 - Two-step vacuum filler - Google Patents

Abstract

The invention relates to a meat-processing industry, in particular, to vacuum fillers for transporting and vacuuming meat farce.The inventive task is aimed at providing reliable vacuuming with high process efficiency.The process is characterized in that a feeder, creating a primary pressure of meat farce, is embodied as a screw feeder of volume type having an outer channel of the meat farce return formed between the screw and the housing, wherein the volumetric capacity exceeds the capacity of the main feeder by 1.5–6 times.The present invention permits to manufacture a device for filling casing with meat farce and vacuuming thereof, improving the vacuuming quality and increasing the process efficiency.

Description

The invention relates to the meat processing industry, vacuum syringes, designed for transporting and vacuuming minced meat.

Known displacer with twin screws for the vacuum syringe [1], located in the internal cavity of the fixed housing with the possibility of rotation and having a discharge and baffle parts, in which the screws have kneading parts located between the baffle and discharge parts of the screws; the inlet for the stuffing is located in the kneading part, approximately on the border with the chipping parts of the screws; in the kneading part with respect to the injection core has a smaller diameter, the coils have a smaller thickness, but a greater inter-turn distance; there are gaps between the turns of the twin screws and between the turns of one screw and the core of the other screw, sufficient for the passage of minced meat; there is a smooth transition of the core of the kneading part into the core of the injection part.

Also known is a vacuum syringe [2], which includes a displacer with two twin screws located in the inner cavity of the fixed housing for rotation and an evacuation system in which there is a first valve in front of the vacuum pump that has the ability to block the suction of air from the inner cavity of the housing; in the vacuum system there is a gas pipeline with a second valve located on it, through which gas can be supplied into the internal cavity of the housing; the device has a control system that can ensure the consistency of the operation of the first and second valves with the rotation-stop of the screws, as well as with each other.

Known solutions allow you to get well kneaded mince and feed it into the shell with almost no air bubbles. The main disadvantage of the known devices is their low productivity. As soon as it is necessary to increase the filling capacity of the shell, the number of air bubbles immediately begins to increase.

Also known are bobbin, device for stuffing and meat product [3]. The known device includes an internal channel for extrusion and at least one external channel for extrusion, located completely or partially around the internal channel. At least one external channel has a first narrow part with a relatively small cross-sectional area and bounded by a wall located across the flow path of the stuffing or fat emulsion and having at least one hole formed in it to create a narrowing in the flow path, and the second expanded part with a relatively large cross-sectional area located behind the first part in the direction of flow. This embodiment of the device allows you to collect the emulsion and pieces of minced meat and return them to the input of the boot device.

A disadvantage of the known device is the complexity of the design of the device, due to the need to carry out technological channels to return products to the beginning of kneading. The same reason leads to clogging of the channel and sufficiently expensive maintenance of the device.

As a prototype, a syringe was chosen to fill the shells with minced meat [4]. The known syringe contains a delivery tank with an outlet through which the filling material can pass; a feeder associated with an outlet through which the filling material can pass; supporting device for the shell; a separating device for forming separate parts of sausages, including a separating device and a control device; and a closing device for the shell, in which the feeding device is made in the form of a feed screw, a screw loading section, a preload section and a degassing section, the latter being connected to a vacuum source. In addition, the screw feeder contains, at least in the area of its preload, another tubular body and feed screw with a different diameter in order to suitably fit the internal diameter of the body in which the feed material is pre-compressed.

The advantage of the prototype is its relatively high performance, achieved through two-stage preload and mixing of minced meat.

The disadvantage of the prototype is the impossibility of a good vacuuming of minced meat with high performance.

The present invention is the possibility of a good vacuum minced meat with high performance of the process.

The task is achieved by the fact that in a well-known vacuum syringe, including a loading tray, a feeder, made in the form of a volumetric feeder with a drive, a vacuum pump and a second feeder, which creates a preliminary pressure of mince, volumetric type with an external channel return minced, formed between the screw and the body, while the volumetric capacity of the pre-feeder exceeds the performance of the main odatchika in 1.5-6 times.

The task is also achieved by the fact that the working body of the preliminary feeder is made in the form of paired screw augers, while the augers have two zones: the baffle and kneading, the outer channel is made only on the kneading part of the screws in the form of radial and lateral gaps between the screws, vacuuming device, and the boot tray is connected

- 1 008319 with a hole in the housing in the area of the kneading part.

The task is also achieved by the fact that the volumetric capacity of the preliminary feeder is achieved by the frequency of rotation of the screw auger with the proportionality of the cross-sections of the preliminary and final feeders.

The task is also achieved by the fact that the loading tray is installed with the possibility of reinstallation on the preliminary or final feeders.

Such an embodiment of the vacuum syringe allows you to organize a good kneading and vacuuming of minced meat in the kneading zone and install a separate screw for feeding the minced meat into the shell. The installation of screws in the kneading zone with a radial gap and a gap between the turns makes the characteristic of the feeder a falling one. The increase in pressure at the outlet immediately leads to a sharp drop in the performance of the feeder due to the return of the stuffing in the return channel. The stuffing can be returned only up to the breakaway part, since there the screws are installed with minimum gaps only to ensure rotation. And in the housing in the area of the baffle holes are made to connect the vacuum pump. At the same time, the increased speed of rotation of the screw auger ensures the return of most of the minced meat. Due to this, it is perfectly mixed, and in the process of kneading air bubbles are actively removed by a vacuum pump. In the second feeder stuffing gets well kneaded and pre-compressed. Next, you need to fill the shell with this stuffing, which is what the first feeder does, and divide it into separate parts. In addition, the advantage is that the screws in the kneading and filling feeders operate in different modes, with different speeds and different pressures. This design of the vacuum syringe allows you to actively regulate the process of preparing stuffing, dosing and filling the casing.

The invention is illustrated by drawings.

FIG. 1 shows the general scheme of a two-stage vacuum syringe.

FIG. 2 shows the general scheme of a two-stage vacuum syringe with screw feeders in both stages.

The vacuum syringe includes a loading tray 1, a feeder made in the form of a volumetric feeder 2, such as a paddle or screw type with a drive 3, a vacuum pump 4. The syringe contains a second feeder made in the form of a volumetric feeder screw 5 with a drive 6, and a second vacuum pump 7. The first volumetric feeder 2 fills the casing with meat 8. The clipper 9 of any known type and supporting device can stand at the syringe outlet 10. Both screw feeders contain a baffle section 11 and 12, made in the form of a tight screw joint . The baffle allows you to effectively remove air bubbles. The first feeder 2 contains a pressure chamber 13. The second feeder 5 contains a kneading chamber 14, which creates a preliminary pressure of minced meat for feeding into the first feeder 2. In the kneading chamber 14, gaps are made between the screw and the side walls or between the screws that form the external channel of the minced meat return. In this channel, a portion of the minced meat goes in the opposite direction in the direction of arrows A, providing a reverse flow of minced meat. Vacuum created by vacuum pumps 4 and 7 collects air bubbles through the baffle, actively removing excess air. Dense coils of screws in the baffle 10 and 11 return the stuffing from the vacuum pump to the feeders. The gaps in the kneading chamber 14, which allow the backward movement of stuffing, reduce the feed performance, therefore, the screw feeder 5 must be rotated at a speed substantially greater than the speed that provides the theoretical volume feed of the first feeder. This circumstance allows you to adjust the degree of mixing and degassing by increasing or decreasing the speed of rotation from 1.5 to 6 times compared with the first feeder.

The syringe provides the ability to swap the loading tray 1 directly onto the first feeder 2 (cross-dotted line). This is necessary when using minced meat from large pieces of meat, which does not require much kneading, but it gives off air bubbles more easily.

At present, a prototype of the product has been tested and its mass production is being prepared.

The present invention allows to manufacture a device for filling the shell with minced meat with its evacuation, while significantly improving the quality of evacuation, while maintaining good process performance.

Information sources

1. Eurasian patent number 003969, M. class. А22С 11/08, publ. 12.25.2003.

2. Eurasian patent number 003970, M. class. А22С 11/08, publ. 12.25.2003.

3. RF patent number 2225120, M. class. А22С 11/02, publ. 03/10/2004.

4. US patent No. 5158498, M. class. A23S 1/00, publ. 10.27.1992 - the prototype.

Claims (4)

CLAIM 1. Two-stage vacuum syringe, including a loading tray, a feeder, made in the form of a volumetric feeder with a drive, a vacuum pump and a second feeder, which creates a preliminary pressure of stuffing, characterized in that the feeder, which creates a preliminary pressure of stuffing, you - 2 008319 filled in the form of a screw feeder of a volumetric type with an external channel for the return of minced meat formed between the screw and the housing, while the volume capacity of the pre-feeder exceeds the capacity of the main feeder by 1.5-6 times. 2. Two-stage vacuum syringe according to claim 1, characterized in that the working body of the pre-feeder is made in the form of twin screw screws, while the screws have two zones: the baffle and kneading, the outer channel is made only on the kneading part of the screws in the form of radial and side gaps between the screws, the baffle part is connected to the vacuum unit, and the loading tray is connected to the hole in the housing in the area of the kneading part. 3. Two-stage vacuum syringe according to claim 1, characterized in that the volumetric capacity of the preliminary feeder is achieved by the frequency of rotation of the screw auger with the proportionality of the cross sections of the preliminary and final feeders. 4. Two-stage vacuum syringe according to claim 2, characterized in that the loading tray is installed with the possibility of reinstalling on the preliminary or final feeders.