RU203153U1 - Cabinet for final proofing of dough pieces - Google Patents

Abstract

The utility model relates to the baking industry and can be used for the final proofing of dough pieces of loaf-like bakery products as part of complex production lines. The task of the utility model is to provide the possibility of adjusting the proofing time of dough pieces when the cabinet is operating as part of a production line, maintaining the specified technological parameters of the proofing in the entire volume of the cabinet with the possibility of adjusting them. The cabinet for the final proofing of dough pieces contains a cabinet frame (1) with heat-insulated panels, a means for moving the dough pieces in the form of an endless conveyor (2) with cradles (3) for placing the dough pieces (12), a mechanism for regulating the proofing time and a microclimate system. The cradles (3) are made in the form of perforated grooves with polymer support rollers (4). The mechanism for regulating the proofing time is made in the form of a carriage (6) with interlocked shafts of the working (ABG) and idle (GDA) conveyor branches. The carriage (6) is placed with the possibility of vertical reciprocating movement on cables 5 rigidly fixed in the upper part of the cabinet frame. The carriage is connected to two drives, one of which is periodic, and the other is continuous. The drive shaft of the intermittent drive 9 is installed in the loading area of the cabinet, and the drive shaft of the continuous drive 10 is located in the unloading area. The microclimate system is made in the form of a supply and exhaust unit 17, which is fixed on the outer wall of the cabinet frame and connected to the internal volume of the cabinet through air ducts 18. The cabinet is equipped with a transfer table 15 installed in the unloading zone of the workpieces at a distance corresponding to the height of the dough piece from the working surface rotary drum 14 of the conveyor. The transfer table is equipped with a 16 conveyor belt driven by a chain of the main conveyor. The technical result from the use of the cabinet for the final proofing of dough pieces is to provide the ability to automatically change the number of working cradles when the specified proofing time is changed, which determines the time of the final proofing of the dough pieces, as well as to ensure the maintenance of uniform and stable temperature and humidity parameters throughout the volume of the cabinet, and in ensuring a clear row of dough pieces. 11 ill.

Description

The utility model relates to the baking industry and can be used for the final proofing of dough pieces of loaf-like bakery products as part of complex production lines.

Of the equipment used, the final proofing cabinets of the RShV brand are known, designed for the final proofing of dough pieces of bat-shaped products weighing 0.2-0.5 with automatic landing in the cabinet cradles and transferring them to the furnaces of standard sizes RSHV-1, RSHV-3, RSHV-1. These cabinets were produced by the Moscow Mechanical Repair Plant (see the catalog “Technological equipment for bakery enterprises”, Russian Union of Bakers, 2000, p. 106). The conveyors of these cabinets are equipped with a pulling chain with a pitch of 38.1 mm; to fix the cradles, it was necessary to modify the chains. The dough pieces were planted without stopping the conveyor, heating and humidification was provided by pipes located in the lower part of the cabinet, a fixed number of working cradles was located on the conveyor without the possibility of changing the proofing time when working as part of the line, the dough pieces were unloaded when the cradle was turned over and dropped onto the oven conveyor. ...

The closest analogue (prototype) is a design according to patent No. 2108040, publ. 04/10/1998; IPC A21C 13/02, in which the device for proofing the dough pieces contains a means for moving the dough pieces made in the form of a zigzag endless conveyor, a heat-insulated proofing cabinet, in the opposite side walls of which, respectively, loading and unloading windows for the passage of the conveyor are made, and placed in the proofing cabinet heating elements, steam humidification elements connected to the steam supply pipeline, and circuits for regulating the temperature and relative humidity of the environment, each of which includes a corresponding sensor and valve, and heating elements and steam humidifying elements are distributed in the volume of the proofing cabinet, while the means for moving the dough pieces is equipped with a mechanism regulation of the proofing time, while the heating elements and steam humidification elements are distributed over the surface spaced from the bottom wall of the proofing cabinet, and over the surface spaced from the side wall of the proofing cabinet, in which no unloading window.

The disadvantages of the existing design are:

- the impossibility of regulating the proofing time when working as part of a production line, because on the conveyor it is possible to change only the speed of movement of the conveyor, while there is no possibility to change the number of working cradles, which actually determines the proofing time;

- unreliable operation of the conveyor chain, because for the conveyor, pulling chains with a pitch of 38.1 mm are used. These chains are not designed to operate on straight long conveyor runs;

- the unevenness of the establishment of temperature and humidity parameters throughout the volume of the cabinet, because heaters and humidifiers are installed at the bottom of the cabinet;

- failures when laying out dough pieces due to laying dough pieces on a moving cradle;

- the impossibility of ensuring the row of spaced dough pieces at the exit from the cabinet when they are turned over, which worsens the conditions for the next operation - notching.

The task of the proposed utility model is to ensure the possibility of regulating the proofing time of dough pieces during the operation of the cabinet as part of the production line, maintaining the specified technological parameters of the proofing in the entire volume of the cabinet with the possibility of adjusting them, as well as increasing the reliability and improving the operating conditions.

The problem is solved due to the implementation of the means for moving the dough pieces in the form of an endless chain conveyor, carrying cradles equipped with rollers, equipped with two drives of periodic and continuous action, connected with a carriage mounted on the cabinet frame with the possibility of vertical movement and connected with the control unit, placement in the zone unloading dough pieces, transfer table, and, also, fixing the air handling unit on the outer wall of the cabinet frame and connecting it through air ducts with the internal volume of the latter.

The technical result from the use of the inventive cabinet for the final proofing of dough pieces is to increase the reliability due to the use of a chain conveyor with roller chains to reduce the resistance to movement in horizontal sections, to ensure the overturn of the cradles on the copiers, by supplying them with side rollers, ensuring the possibility of automatic change in the number of workers cradles, when changing the set proofing time, which determines the time of the final proofing of the dough pieces, as well as ensuring the maintenance of uniform and stable temperature and humidity parameters throughout the cabinet, and ensuring a clear row of dough pieces.

The essence of the utility model is that the cabinet for the final proofing of dough pieces, contains a frame with heat-insulated panels, a means for moving the dough pieces in the form of an endless chain conveyor with cradles for dough pieces, in the form of perforated grooves with support rollers, a mechanism for regulating the proofing time and a system microclimate, while the endless chain conveyor is equipped with a carriage with interlocked shafts of the working and idle conveyor branches, located, with the possibility of vertical reciprocating movement, on rigidly fixed in the upper part of the cabinet frame, horizontal cables and connected with two drives: periodic and continuous action, moreover, the intermittent drive shaft is installed in the loading area of the cabinet, and the continuous drive shaft is located in the unloading area, while the microclimate system is made in the form of an air handling unit, fixed on the outer wall of the cabinet frame a and connected to the internal volume of the latter through air ducts, in addition, the cabinet is equipped, located in the unloading zone, with a transfer table, installed relative to the working surface of the rotary drum of the conveyor at a distance corresponding to the height of the dough piece, and equipped with a conveyor belt driven from the main conveyor chain.

The essence of the utility model is illustrated by graphic materials.

FIG. 1 shows the cabinet for the final proofing of dough pieces, (general view);

FIG. 2 is a diagram of the carriage suspension in the cabinet frame;

In Fig.2a - placement of the carriage in the extreme upper position;

FIG. 2c - placing the carriage in the initial working position (for a proofing time of 60 minutes)

FIG. 2c is a diagram of the movement of the carriage in the working cycle;

FIG. 3 - transfer table with conveyor belt;

FIG. 4 - conveyor chain

FIG. 4a - skating rink (section along A-A in Fig. 4)

FIG. 5 - cradle;

FIG. 5- cradle with road wheels (top view in Fig. 5)

FIG. 6 is a diagram of a microclimate system with a supply unit.

Cabinet for final proofing of dough pieces (fig. 1)

contains a frame 1, which houses an endless chain conveyor 2 with cradles in the form of perforated grooves 3 equipped with support rollers made of caprolon 4. (Fig. 5a). In the upper part of the frame 1 on the cables 5, the carriage 6 is suspended with the possibility of vertical movement, connected through the shafts 7 and 8, respectively, with the shaft 9 of the intermittent drive and with the shaft 10 of the continuous drive by means of the conveyor chain. The carriage 6 is electrically connected, with an automatic control unit (not shown in the figure) and with an upper position sensor 11. Thus, the movement of the carriage 6 regulates the movement of the cradles fixed on the conveyor 2, and has the ability to fix in a predetermined position for loading and accurate hit in the cradle 3 dough pieces 12. In the loading area of the dough pieces there is a landing table 13. At the unloading of the dough pieces, in the area of the rotary drum 14, there is a transfer table 15 equipped with a conveyor belt 16 (Fig. 3). Transfer table 15 is installed relative to the continuous chain conveyor 2 at a distance equal to the height of the dough piece 12, located in the cradle 3 of the conveyor. The conveyor belt of the transfer table 15 is moved from the rotary drum 14 when the chains of the conveyor 2 move. On the outer side of the wall of the frame 1, an air handling unit 17 is rigidly fixed, connected to the inner volume of the cabinet by means of air ducts 18 (Fig. 1.6). Air handling unit 18 contains blocks of fan 19, heating 20, steam supply 21 and cooling 22 (Fig. 6), temperature sensor 23 and humidity 24. The remote chiller is designated at 25. The cabinet is also equipped with a drying system 26 cradles and a bactericidal lamp 27 (Fig. 1), a chain with rollers 28 is used on the conveyor 2 (Fig. 4a). The section of the conveyor, with the cradles loaded with dough pieces, forms the working branch of the conveyor, and the section of the conveyor carrying the cradles, free from the pieces, forms the idle branch of the conveyor. The working branch of the conveyor is determined by the points of the ABG, and the idle branch is determined by the points of the HDA (Fig. 2c). When you change the placement of the carriage in the initial working position, the installation height of the carriage changes, the ratio of the length of the working and idle branches of the conveyor changes, and, accordingly, the ratio of the number of working and idle cradles (Fig. 2c), and the number of working cradles affects the proofing time.

The cabinet works as follows:

Before starting the operation of the cabinet for final proofing, on the control panel (not shown in the figure), the parameters of the final proofing are set: humidity, temperature and proofing time. The chain conveyor 2 of the cabinets with 3 cradles is located in an insulated frame 1, where the set temperature and humidity are automatically maintained. The initially set parameters of humidity and temperature, throughout the volume of the cabinet, are provided by a microclimate system with a remote air handling unit 17, including heating units 20, cooling 22, humidification 24 and with a remote chiller 25, as well as with a fan 19 that is adjustable in terms of performance and moves the steam-air mixture along air ducts 18 (the mixture fills the entire volume of the cabinet with full recirculation). Initially, the proofing time is set on the control panel (for example 60 minutes). A command is received from the control unit, both drives are switched on, and since the speed of the intermittent drive (V1) is two times higher than the speed of the constant movement drive (V2), the carriage 6 moves up to the upper position sensor 11 (Fig. 2a). This position is the starting point for determining the starting working positions of the set proofing time. Then, from the automation unit, a command is sent to move to the initial working position of the carriage, corresponding to the required proofing time (for example, 60 minutes (Fig. 2.c). Then the conveyor 2 moves in the working cycle. In this case, the carriage 6 constantly makes vertical reciprocating movement relative to the selected initial position (the diagram of the movement of the carriage in the operating mode is shown in Fig. 2c). The movement of the carriage is as follows: when the shaft 9 of the intermittent drive stops, the shaft 10 of the constant displacement drive continues to pull the chain at a speed V2, and the carriage moves down from the initial position (60 minutes) to position 2 (Fig. 2c) When the intermittent drive is switched on at high speed V1, the carriage, by means of a chain, moves upward relative to the initial position (60 minutes) to position 1 (in Fig. 2c).

This cycle repeats itself continuously while the cabinet conveyor is running.

When the carriage is placed in the initial working position for a given proofing time (60, 55 or 55 minutes), the installation height of the carriage changes, due to this, the ratio of the length of the working (ABG) and idle (GDA) conveyor branches, and, accordingly, the ratio of the number of workers and idle cradles (Fig.2c). When changing the setting of the proofing time, the initial position of the carriage changes, the number of working cradles changes, and, accordingly, the proofing time changes.

Proofing time is determined by the cycle time of one cradle, multiplied by the number of cradles in the cabinet.

When planting dough pieces, the shaft 9 of the intermittent drive ensures that the conveyor moves on the landing in a step mode. When the intermittent drive stops, on the planting table 13, a certain number of workpieces 12 are automatically placed in the oriented cradles 3 by the fitter of the dough pieces 12. The conveyor moves to the next step. Then, the cradles with the dough pieces move along the conveyor to the transfer table 15 (Fig. 3) On the transfer table shaft 14, using a copier, the cradle 3 with the dough piece 12 smoothly bends around the conveyor belt of the transfer table 15 (Fig. 3), and because ... the cradle 3 and the conveyor belt 16 of the transfer table move at the same speed, in the upper position, with a complete overturn of the cradle, a row of dough pieces 12 simultaneously passes to the conveyor belt 16 of the transfer table 15. From the conveyor belt of the transfer table 15 rows of dough pieces 12 are transferred to the next section production line for cutting and baking. With this method of transplanting, an accurate row of dough pieces is ensured, which provides good conditions for performing the next technological operation - notching the dough pieces.

The design of the proposed cabinet for the final proofing of dough pieces ensures control over the time of the final proofing of the pieces when using the cabinet as part of a complex production line, is reliable in operation, ensures that the specified technological parameters are maintained throughout the entire volume of the cabinet, the possibility of adjusting and setting for the required proofing time of the pieces, and also provides improvement of operating conditions.

Thus, the task facing the utility model has been solved.

Claims (5)

1. A cabinet for the final proofing of dough pieces, containing a cabinet frame with heat-insulated panels, a means for moving the dough pieces in the form of an endless conveyor with cradles for placing the pieces, a mechanism for regulating the proofing time and a microclimate system, characterized in that the proofing time control mechanism is made in the form of a carriage with interlocked shafts of the working and idle conveyor branches, installed with the possibility of vertical reciprocating movement on cables rigidly fixed in the upper part of the cabinet frame and connected to two drives, one of which is periodic, and the second is continuous, and the drive shaft of the intermittent drive is installed in the loading area of the cabinet, and the drive shaft of the continuous drive is located in the unloading area, while the microclimate system is made in the form of an air handling unit, fixed on the outer wall of the cabinet frame and connected to the inner volume m of the latter through the air ducts, in addition, the cabinet is equipped with a transfer table installed in the unloading zone of the workpieces at a distance corresponding to the height of the dough piece from the working surface of the rotary drum of the conveyor. 2. Cabinet for final proofing of dough pieces according to claim 1, characterized in that the carriage is installed with the possibility of vertical reciprocating movement from a given point when the chains move. 3. Cabinet for final proofing of dough pieces according to claim 1, characterized in that the air handling unit includes fan, heating, steam and cooling units. 4. Cabinet for final proofing of dough pieces according to claim 1, characterized in that the cradles are made in the form of perforated grooves with polymer support rollers. 5. Cabinet for final proofing of dough pieces according to claim 1, characterized in that the transfer table is equipped with a conveyor belt driven by a chain of the main conveyor.

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