Heat energy recovery system in bread production line

Abstract

The utility model relates to the field of bread production, in particular to a heat energy recovery system in a bread production line, which comprises a frame, a switch door and a heat energy recovery pipe. During use, the baking tray is placed on the conveying belt, and the conveying belt drives the baking tray and bread on the baking tray to sequentially enter the feeding cavity, the baking cavity and the discharging cavity. After bread in the baking cavity is baked, the baking tray outside the rack and the bread are conveyed into the feeding cavity through the conveying belt, the baking tray and the bread in the feeding cavity are conveyed into the baking cavity to be baked, and the baking tray and the bread in the baking cavity are conveyed into the discharging cavity to be cooled. At the moment, residual hot air in the discharging cavity is sucked into the feeding cavity through the exhaust fan, bread in the feeding cavity is preheated, heat energy recycling is achieved, and energy is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bread production, especially in a kind of heat recovery system in bread production line. BACKGROUND

[0002] In the bread production process, baking, steaming, proofing process will produce a large amount of waste heat, among them, when bread baking is completed, most are directly opened the door of baking chamber, and the bread is taken out, in this process, the hot air in the baking chamber is directly discharged to the atmosphere in large quantities, so the heat energy of the hot air discharged is wasted, and the traditional bread baking chamber does not recycle the heat energy, which greatly causes energy waste. SUMMARY

[0003] In view of the above background technology, the utility model provides a kind of heat recovery system in bread production line.

[0004] The utility model adopts the following technical scheme:

[0005] A kind of heat recovery system in bread production line, it is characterized in that, the heat recovery system includes:

[0006] Rack, the internal space of the rack is separated into feed cavity, baking cavity and discharge cavity by two mutually parallel partitions, the baking cavity is located between the feed cavity and discharge cavity, conveying belt is provided in the rack, the conveying belt traverses the feed cavity, baking cavity and discharge cavity, and the conveying belt is used to convey baking tray, and the side surface of the partition is provided with an aperture;

[0007] Switch door, two switch doors are provided, and the two switch doors are respectively arranged in the two apertures and are lifted, and the switch door is used to control the opening and closing of the aperture;

[0008] Heat recovery pipe, the heat recovery pipe is arranged on the outer surface of the rack, and the two ends of the heat recovery pipe are respectively connected to the feed cavity and the discharge cavity, and an air extractor is arranged in the heat recovery pipe;

[0009] Wherein, the baking tray with bread enters the feed cavity, baking cavity and discharge cavity in sequence on the conveying belt, and the air extractor is used to suck the residual hot air in the discharge cavity into the feed cavity, and preheat the bread placed in the feed cavity.

[0010] As a further improvement, discharge port and feed port are respectively arranged at the two ends of the rack, the discharge port and feed port are respectively connected with the discharge cavity and the feed cavity, and the discharge port is hinged with a discharge door, which is used to control the opening and closing of the discharge port, and the feed port is provided with a liftable feed door, which is used to control the opening and closing of the feed port.

[0011] As a further improvement, the two said switch doors are synchronously lifted with the said feeding door.

[0012] As a further improvement, the said switch doors and feeding door are both extended above the said machine frame, and the said switch doors and feeding door are connected by a lifting frame driven by a lifting cylinder arranged on the lateral side of the said machine frame.

[0013] As a further improvement, a heat energy recovery outlet is arranged on the top of the said feeding cavity, a heat energy recovery inlet is arranged on the top of the said discharging cavity, and the said heat energy recovery pipe is connected with the said heat energy recovery outlet and heat energy recovery inlet respectively.

[0014] As can be seen from the above description of the structure of the present application, compared with the prior art, the present application has the following advantages: when in use, the baking tray is placed on the conveyor belt, and the conveyor belt carries the baking tray and the bread on the baking tray into the feeding cavity, baking cavity and discharging cavity in sequence. When the bread in the baking cavity is baked, the conveyor belt carries the baking tray and bread outside the machine frame into the feeding cavity, the baking tray and bread in the feeding cavity are carried into the baking cavity for baking, and the baking tray and bread in the baking cavity are carried into the discharging cavity for cooling. At this time, the hot air remaining in the discharging cavity is sucked into the feeding cavity by the air extractor, the bread in the feeding cavity is preheated, the heat energy is recovered, and energy is saved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of the three-dimensional structure of the present application.

[0016] Figure 2 is a schematic view of the cross-sectional structure of the present application.

[0017] Figure 3 is Figure 1 is a schematic view of the structure of the present application.

[0018] Figure 4 is a schematic view of the cross-sectional structure of the present application in another state. DETAILED DESCRIPTION

[0019] The specific implementation of the present application will be described below with reference to the accompanying drawings.

[0020] As shown in the accompanying Figure 1 and Figure 2As shown in the bread production line, a heat recovery system, the heat recovery system comprises a rack 1, a switch door 13 and a heat recovery pipe 2, wherein the internal space of the rack 1 is divided into three chambers, i.e. a feeding chamber 101, a baking chamber 102 and a discharging chamber 103, by two mutually parallel partitions 11, the baking chamber 102 is arranged between the feeding chamber 101 and the discharging chamber 103, and the side of each partition 11 is provided with an opening 12 for connecting the feeding chamber 101, the baking chamber 102 and the discharging chamber 103. The rack 1 is provided with a discharging port 14 and a feeding port 16 at two ends respectively, and the discharging port 14 and the feeding port 16 are connected with the discharging chamber 103 and the feeding chamber 101 respectively. A conveying belt 110 in the rack 1 crosses the feeding chamber 101, the baking chamber 102 and the discharging chamber 103. In use, the baking tray 3 is placed on the conveying belt 110, and the conveying belt 110 carries the baking tray 3 and the bread on the baking tray 3 into the feeding chamber 101, the baking chamber 102 and the discharging chamber 103 in sequence. The bread is preheated in the feeding chamber 101, baked in the baking chamber 102 and cooled in the discharging chamber 103.

[0021] As shown in the accompanying drawings Figure 2 , the discharging port 14 is hinged with a discharging door 15 for controlling the opening and closing of the discharging port 14, the feeding port 16 is provided with a liftable feeding door 17 for controlling the opening and closing of the feeding port 16. The opening 12 is provided with a liftable switch door 13 for controlling the opening and closing of the opening 12. The bottom of each of the opening 12, the discharging port 14 and the feeding port 16 is provided with a clearance slot, and the upper part of the conveying belt 110 is placed in the clearance slot for transmission, so as to avoid the switch door 13, the discharging door 15 and the feeding door 17 from colliding with the conveying belt 110 when being opened and closed, and to make the feeding chamber 101, the baking chamber 102 and the discharging chamber 103 as sealed as possible to reduce heat loss.

[0022] Preferably, as shown in the accompanying drawings Figures 1 to 3 , the two switch doors 13 and the feeding door 17 are synchronously lifted, and specifically, the switch doors 13 and the feeding door 17 are extended out of the upper surface of the rack 1 upward, the two switch doors 13 and the feeding door 17 are connected through a lifting frame 131, and the lifting frame 131 is driven by a lifting cylinder 132 arranged on the outer side of the rack 1. In use, the lifting cylinder 132 drives the lifting frame 131 to lift, and drives the switch doors 13 and the feeding door 17 to synchronously lift, so as to unify the driving source, save energy, and avoid the switch doors 13 and the feeding door 17 from colliding with the baking tray 3 on the conveying belt 110 in the opening and closing process, and ensure that the conveying belt 110 can smoothly convey the baking tray 3 into the feeding chamber 101, the baking chamber 102 and the discharging chamber 103.

[0023] It is worth mentioning that, as shown in the accompanying drawings Figure 2 and Figure 4As shown, the outer surface of the rack 1 is provided with a heat energy recovery pipe 2, the two ends of the heat energy recovery pipe 2 are connected to the feeding cavity 101 and the discharging cavity 103 respectively, specifically, the top of the feeding cavity 101 is provided with a heat energy recovery outlet 19, the top of the discharging cavity 103 is provided with a heat energy recovery inlet 18, the two ends of the heat energy recovery pipe 2 are connected with the heat energy recovery outlet 19 and the heat energy recovery inlet 18 respectively. In addition, the heat energy recovery pipe 2 is provided with an air extractor 21. When the bread in the baking cavity 102 is baked, the switch door 13 and the feeding door 17 are opened, the conveying belt 110 conveys the baking tray 3 and the bread outside the rack 1 to the feeding cavity 101, the baking tray 3 and the bread in the feeding cavity 101 are conveyed to the baking cavity 102 for baking, and the baking tray 3 and the bread in the baking cavity 102 are conveyed to the discharging cavity 103 for cooling. When the baking tray 3 and the bread are conveyed to the position, the conveying belt 110 is paused, the switch door 13 and the feeding door 17 are closed, at this time, the air extractor 21 is started, the air extractor 21 sucks the residual hot air in the discharging cavity 103 to the feeding cavity 101, preheats the bread placed in the feeding cavity 101, on the one hand, the heat energy is recovered, energy is saved, on the other hand, the temperature of the baking tray and the bread in the discharging cavity 103 is lowered. After the air extractor 21 is operated for a period of time, the operation is stopped, then the discharging door 15 is opened, the baking tray in the discharging cavity 103 is taken out together with the bread, the discharging door 15 is closed, the discharging cavity 103 is emptied, the position of the bread baked in the baking cavity 102 is left, and the bread cooled in advance is taken out from the discharging cavity 103 before the heat in the discharging cavity 103 is recovered.

[0024] Further, as shown in the accompanying drawings, Figure 1 The heat energy recovery pipe 2 is wrapped with thermal insulation cotton, the thermal insulation cotton is a new type of thermal insulation material which is non-toxic, harmless and non-polluting and is made of high-purity clay clinker, aluminum oxide powder, silica powder, chrome sand and the like, can reduce the heat loss of the hot air flowing in the heat energy recovery pipe 2, and improve the heat energy recovery efficiency.

[0025] In summary, in use, the baking tray 3 is placed on the conveying belt 110, the conveying belt 110 conveys the baking tray 3 and the bread on the baking tray 3 into the feeding cavity 101, the baking cavity 102 and the discharging cavity 103 in sequence. When the bread in the baking cavity 102 is baked, the conveying belt 110 conveys the baking tray 3 and the bread outside the rack 1 to the feeding cavity 101, the baking tray 3 and the bread in the feeding cavity 101 are conveyed to the baking cavity 102 for baking, and the baking tray 3 and the bread in the baking cavity 102 are conveyed to the discharging cavity 103 for cooling, at this time, the air extractor 21 sucks the residual hot air in the discharging cavity 103 to the feeding cavity 101, preheats the bread placed in the feeding cavity 101, and the heat energy is recovered, energy is saved.

[0026] The above merely is the specific implementation manner of the present application, but the design concept of the present application is not limited to this, and any non-essential change of the present application by using the concept should belong to the act of infringing the protection scope of the present application.

Claims

1. A heat recovery system in a bread production line, characterized in that, The heat energy recovery system comprises: A rack, an inner space of the rack is divided into three chambers of a feeding chamber, a baking chamber and a discharging chamber via two mutually parallel partitions, the baking chamber is arranged between the feeding chamber and the discharging chamber, a conveying belt is arranged in the rack, the conveying belt transversely passes through the feeding chamber, the baking chamber and the discharging chamber, the conveying belt is used for conveying baking trays, and an opening is arranged on a side of each of the partitions; Two switch doors are arranged, the two switch doors are respectively arranged in the two openings and are lifted and lowered, and the switch doors are used for controlling opening and closing of the openings; A heat energy recovery pipe is arranged on an outer surface of the rack, and two ends of the heat energy recovery pipe are respectively connected to the feeding chamber and the discharging chamber, and an air extractor is arranged in the heat energy recovery pipe. The baking trays on the conveying belt enter the feeding chamber, the baking chamber and the discharging chamber in sequence with bread, the air extractor is used for sucking hot air remaining in the discharging chamber into the feeding chamber, and the bread arranged in the feeding chamber is preheated.

2. A thermal energy recovery system in a bread production line as claimed in claim 1, characterized in that: Discharging ports and feeding ports are respectively arranged at two ends of the rack, the discharging ports and the feeding ports are respectively connected to the discharging chamber and the feeding chamber, a discharging door is hinged to the discharging port, the discharging door is used for controlling opening and closing of the discharging port, and a feeding door is arranged in the feeding port and is liftable, the feeding door is used for controlling opening and closing of the feeding port.

3. A thermal energy recovery system in a bread production line as claimed in claim 2, characterized in that: The two switch doors are synchronously lifted and lowered with the feeding door.

4. A thermal energy recovery system in a bread production line as claimed in claim 3, characterized in that: The switch doors and the feeding door are both upwardly extended out of an upper surface of the rack, the two switch doors and the feeding door are connected through a lifting frame, and the lifting frame is driven by a lifting cylinder arranged on an outer side of the rack.

5. A thermal energy recovery system in a bread production line as claimed in claim 1, characterized in that: A heat energy recovery outlet is arranged on a top of the feeding chamber, a heat energy recovery inlet is arranged on a top of the discharging chamber, and two ends of the heat energy recovery pipe are respectively connected to the heat energy recovery outlet and the heat energy recovery inlet.

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