Animal fat extraction preheating equipment

Abstract

The invention relates to the technical field of boiler heat energy recovery and energy conservation, in particular to energy-saving equipment for boiler heat recovery, which is applied to a previous process of animal fat extraction and preheating equipment and is used for preheating animal fat raw materials in advance. The equipment disclosed by the invention is named as a raw material preheating pot and is animal fat preheating equipment. The device comprises an extraction barrel, the upper surface of the extraction barrel is fixedly communicated with a feeding pipe, and the lower surface of the extraction barrel is fixedly communicated with a discharging port. The temperature of a boiler smoke outlet is higher than that of a heat conduction oil boiler outlet, high-temperature smoke exhausted by a boiler chimney is used as a heat source to preheat animal fat, serious thermal pollution caused by the fact that high-temperature gas is directly exhausted into air is avoided, recycling of resources is achieved, and negative effects on the environment are reduced. And heat transfer is performed through a single-line communication channel formed by the heat exchange channel and the heat exchange pipe, so that the problem of non-uniform temperature distribution is effectively avoided, and animal fat can be uniformly preheated.

Description

Technical Field

[0001] The invention relates to the technical field of animal fat extraction, in particular to an animal fat extraction preheating device. Background Art

[0002] With the continuous development of the food, feed, chemical, pharmaceutical and other industries, the demand for animal fat continues to grow. Animal fat can be used to make cakes, fried foods, etc. in food processing, which can give food a unique taste and flavor. Adding it in the feed field increases the energy and palatability of the feed. In the chemical field, it can be used as a raw material for the production of soaps, lubricants and other products. In the pharmaceutical field, some animal fats have certain medicinal value. This wide application demand has prompted people to develop more efficient animal fat extraction and preheating equipment.

[0003] Chinese patent publication number CN103289811B discloses a fully automatic animal fat extraction preheating device, which belongs to the technical field of animal fat extraction, including a mixing drum, a heat transfer oil pipe, a stirring mechanism and a power mechanism, wherein a feeding door is provided on the upper part of the mixing drum for feeding animal fat raw materials, a plurality of lifting holes are provided on the mixing drum for lifting the mixing drum, and the heat transfer oil pipe is arranged in a circle and fixed in the mixing drum. In the present invention, the animal fat raw materials are placed in the mixing drum, and the stirring mechanism rotates to stir the animal fat. At the same time, a heat transfer medium is installed in the heat transfer oil pipe to heat the animal fat, and the animal fat raw materials are made uniform through the dual effects of stirring and heating.

[0004] In the above invention, the animal fat is heated by using a thermal oil boiler heating device to transfer heat to the thermal oil pipe, and then the animal fat is heated. Only the heat transferred by the boiler can be used. However, this method has some problems. First, it takes a long time to heat the animal fat to extract the oil, which means that energy needs to be continuously supplied for a long time, resulting in more serious energy consumption. The heating device can only transfer heat to the position that contacts the heating device during the process of transferring heat to the thermal oil pipe, which will cause heat loss in the chimney of the heating device boiler. Summary of the invention

[0005] The object of the present invention is to provide a preheating pot of a preheating energy-saving device for recovering heat from a boiler chimney, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides an animal fat extraction and preheating device, comprising an extraction barrel, wherein the upper surface of the extraction barrel is fixedly connected to a feed pipe, the lower surface of the extraction barrel is fixedly connected to a discharge port, the extraction barrel is provided with a stirring assembly for stirring and mixing the animal fat, the extraction barrel is provided with heat exchange channels near the top and bottom, a heat exchange tube is provided between the two heat exchange channels, and the heat exchange tube is located near the edge of the inner cavity of the extraction barrel; A channel is formed between the heat exchange channel and the heat exchange tube to connect the bottom, the interior and the top of the extraction barrel in a single line. The channel is used to receive the heat discharged from the boiler chimney and evenly preheat the animal fat.

[0007] As a further improvement of the present technical solution, the heat exchange channel at least includes an upper air collecting frame connected to the top of the heat exchange tube, and a lower air collecting frame connected to the bottom of the heat exchange tube, the inner wall of the lower air collecting frame is fixedly connected to an air inlet pipe, and the inner wall of the lower air collecting frame is fixedly connected to an air outlet pipe, then the lower air collecting frame and the inner wall of the upper air collecting frame are each provided with four partitions, and the function of the partition is to connect the area divided by the lower air collecting frame and the upper air collecting frame with the heat exchange tube.

[0008] As a further improvement of the technical solution, the top of the lower air collecting frame is provided with a plurality of empty grooves adapted to communicate with the bottom of the heat exchange tube, and the bottom of the upper air collecting frame is provided with a plurality of empty grooves adapted to communicate with the top of the heat exchange tube.

[0009] As a further improvement of the technical solution, the inner wall of the upper air collecting frame is provided with a plurality of ventilation grooves, the inner wall of the lower air collecting frame is provided with two ventilation grooves, and the inner walls of the two ventilation grooves are fixedly connected with a transmission pipeline.

[0010] As a further improvement of the technical solution, the surface of the heat exchange tube is provided with a nano-layer or a PTFE+PTFAB non-stick coating to reduce the adhesion between the animal fat and the heat exchange tube, thereby effectively preventing the fat from adhering to the surface of the heat exchange tube.

[0011] As a further improvement of the present technical solution, the stirring assembly includes a bottom bearing fixed on the top of the lower air collecting frame, the inner wall of the bottom bearing is rotatably connected to a rotating shaft, three stirring blades are vertically and equidistantly distributed on the surface of the rotating shaft, and the three stirring blades are distributed equidistantly in a ring shape.

[0012] As a further improvement of the technical solution, a reduction motor is fixedly connected to the top of the rotating shaft, and the bottom of the reduction motor is fixedly connected to the top of the extraction barrel.

[0013] As a further improvement of the present technical solution, the inner wall of the extraction barrel is provided with four supports, the bottoms of two of the supports are in contact with the top of the lower gas collecting frame, and the tops of the other two supports are in contact with the bottom of the upper gas collecting frame, and a plurality of circular holes are opened on the surface of the supports, and the inner walls of the circular holes are adapted to connect to the surface of the heat exchange tube.

[0014] As a further improvement of the technical solution, a fixture is fixedly connected to the inner wall of the extraction barrel, and the inner wall of the fixture contacts the surface of the heat exchange tube, and its function is to fix the middle part of the heat exchange tube.

[0015] As a further improvement of the technical solution, a scraper is fixedly connected to one end of the stirring blade away from the rotating shaft, and the surface of the scraper is in contact with the surface of the heat exchange tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the animal fat extraction preheating equipment, the outlet temperature of the boiler flue gas is higher than the outlet temperature of the thermal oil boiler, and the high-temperature flue gas discharged from the boiler chimney is used as a heat source to preheat the animal fat, avoiding the direct discharge of high-temperature gas into the air to cause serious thermal pollution, realizing the recycling and reuse of resources, and reducing the negative impact on the environment.

[0017] 2. In the animal fat extraction and preheating equipment, heat is transferred through a single-line connecting channel formed by a heat exchange channel and a heat exchange tube, which effectively avoids the problem of uneven temperature distribution, so that the animal fat can be preheated evenly without the situation of over-preheating in some parts and under-preheating in others, thereby improving the efficiency and quality of subsequent animal fat extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention; Figure 2 This is a disassembled diagram of the heat exchange channel structure of the present invention; Figure 3 It is an overall block diagram of the upper gas collecting frame of the present invention; Figure 4 It is an overall schematic diagram of the heat exchange tube of the present invention; Figure 5 It is a schematic diagram of gas flow of the present invention; Figure 6 is a schematic diagram of a fixer of the present invention; Figure 7 It is a schematic diagram of the transmission pipeline structure of the present invention; Figure 8 It is a schematic diagram of the rotating shaft structure of the present invention.

[0019] The meaning of each number in the figure is: 100, extraction barrel; 101, feed pipe; 102, discharge port; 200, heat exchange channel; 210, upper air collecting frame; 220, lower air collecting frame; 221, air inlet pipe; 222, air outlet pipe; 223, partition; 224, ventilation groove; 225, transmission pipeline; 300, heat exchange tube; 310, support; 320, fixer; 400, stirring assembly; 410, reduction motor; 411, rotating shaft; 412, stirring blade; 413, scraper; 414, bottom bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] See also Figure 1-Figure 8 As shown, this embodiment provides an animal fat extraction and preheating device, including an extraction barrel 100, a feed pipe 101 is fixedly connected to the upper surface of the extraction barrel 100, and a discharge port 102 is fixedly connected to the lower surface of the extraction barrel 100, characterized in that: a stirring assembly 400 for stirring and mixing animal fat is provided inside the extraction barrel 100, heat exchange channels 200 are formed near the top and bottom of the extraction barrel 100, a heat exchange tube 300 is provided between the two heat exchange channels 200, and the heat exchange tube 300 is located near the edge of the inner cavity of the extraction barrel 100; A channel is formed between the heat exchange channel 200 and the heat exchange tube 300 to connect the bottom, the interior and the top of the extraction barrel 100 in a single line. The channel is used to receive the heat discharged from the boiler chimney and evenly preheat the animal fat.

[0022] like Figure 1-Figure 3 and Figure 7 As shown, the present invention takes into account that the outlet temperature of boiler flue gas is normally 50° higher than the outlet temperature of thermal oil boiler, the boiler temperature is set to 250°, and the flue gas discharge temperature is 300°. Heating requires 70-90 / cubic natural gas. If such high-temperature gas is directly discharged into the air, it will cause serious thermal pollution to the environment. Therefore, the high-temperature flue gas discharged from the boiler chimney is used as a heat source and connected to the inside of the extraction barrel 100 to achieve preheating of animal fat, reduce thermal pollution to the environment, avoid direct discharge of these waste heat into the atmosphere, and achieve resource recycling. Furthermore, if the boiler heat source is directly connected to the extraction barrel 100, the temperature of the parts in direct contact with the heat source will be higher, while the temperature of the parts not in contact with the heat source will be relatively lower. Under such uneven temperature distribution, some animal fats may be over-preheated while other parts may be under-preheated, thereby affecting the efficiency and quality of subsequent animal fat oil extraction. Therefore, the channel formed between the heat exchange channel 200 and the heat exchange tube 300 inside the extraction barrel 100 becomes an important path for heat transfer. Heat flows in this channel. In this process, the heat The heat starts from the heat exchange channel 200 near the bottom, transfers upward along the heat exchange tube 300, passes through the inner edge of the extraction barrel 100, and then reaches the heat exchange channel 200 near the top, and then transfers downward through the heat exchange tube 300 connected by the heat exchange channel 200 at the top to reach the heat exchange channel 200 at the bottom, forming a single-line connection, so the animal fat can be preheated evenly. Heat is transferred through the single-line connection channel formed between the heat exchange channel 200 and the heat exchange tube 300, which can effectively avoid the problem of uneven temperature distribution caused by directly connecting the boiler heat source to the inside of the extraction barrel 100.

[0023] In order to enable the heat exchange channel 200 to connect the gas in a single line, the specific structure of the heat exchange channel 200 is further disclosed, such as Figure 4 As shown, therefore, the heat exchange channel 200 at least includes an upper gas collecting frame 210 connected to the top of the heat exchange tube 300, a lower gas collecting frame 220 connected to the bottom of the heat exchange tube 300, an air inlet pipe 221 is fixedly connected to the inner wall of the lower gas collecting frame 220, and an air outlet pipe 222 is fixedly connected to the inner wall of the lower gas collecting frame 220. Then, the inner walls of the lower gas collecting frame 220 and the upper gas collecting frame 210 are both provided with four partitions 223, and the function of the partition 223 is to connect the area divided by the lower gas collecting frame 220 and the upper gas collecting frame 210 to the heat exchange tube 300, and by connecting the air inlet pipe 221 to the gas from the boiler chimney, the air inlet pipe 221 is connected to the boiler chimney. The gas pipe 221 will transfer the received gas to the interior of the lower gas collecting frame 220. At this time, the lower gas collecting frame 220 will transfer the gas to the inner cavity of the heat exchange tube 300 and reach the interior of the upper gas collecting frame 210. Then, the gas will enter the heat exchange tube 300 in another area through the upper gas collecting frame 210. The gas will then flow through the lower gas collecting frame 220, the upper gas collecting frame 210, the heat exchange tube 300, and the internal single-line flow out from the gas outlet pipe 222. During the flow of the gas in the heat exchange tube 300, the heat it carries will be transferred to the heat exchange tube 300, thereby heating the animal fat inside the extraction barrel 100.

[0024] In order to prevent air leakage when the lower air collecting frame 220 and the upper air collecting frame 210 are connected to the heat exchange tube 300, a plurality of empty grooves that are adapted to be connected to the bottom of the heat exchange tube 300 are opened at the top of the lower air collecting frame 220, and a plurality of empty grooves that are adapted to be connected to the top of the heat exchange tube 300 are opened at the bottom of the upper air collecting frame 210. By fixing the upper and lower ends of the heat exchange tube 300 to the empty grooves opened in the upper and lower air collecting frames 210 and 220, gas leakage can be prevented.

[0025] In order to allow the upper gas collecting frame 210 and the lower gas collecting frame 220 to circulate through the heat exchange pipe 300, a plurality of ventilation grooves 224 are provided on the inner wall of the upper gas collecting frame 210, and two ventilation grooves 224 are provided on the inner wall of the lower gas collecting frame 220. The inner walls of the two ventilation grooves 224 are fixedly connected with a transmission pipe 225. The gas entering through the air inlet pipe 221 will first reach N1, and then the gas will enter N2 along the heat exchange pipe 300 connected at the top. The gas entering N2 The gas will enter N3 through the heat exchange pipe 300, and the gas reaching N3 will enter N4 along the heat exchange pipe 300. The gas reaching N4 will reach N5 along the transmission pipe 225, and enter N6 through the heat exchange pipe 300 connected to the top of N5. The gas reaching N6 will reach N7 along the transmission pipe 225 connected to the upper gas collecting frame 210, and reach N8 through the heat exchange pipe 300 connected from the bottom of N7, and then be discharged from the gas outlet pipe 222, so as to realize the circulation of gas. Figure 5-6 shown.

[0026] Considering that animal fat will adhere to the surface of the heat exchange tube 300 when it comes into contact with the heat exchange tube 300 inside the extraction barrel 100, the surface of the heat exchange tube 300 is provided with a nano coating and a PTFE plus PTFA non-stick coating to reduce the adhesion between the animal fat and the heat exchange tube 300, thereby effectively preventing the fat from adhering to the surface of the heat exchange tube 300. By spraying the nano coating on the surface of the heat exchange tube 300, the heat exchange tube 300 can be kept clean, ensuring that its heat exchange efficiency is not affected by fat adhesion.

[0027] In order to ensure that the stirring component 400 is heated evenly inside when the animal fat is heated in the heat exchange channel 200, the stirring component 400 includes a bottom bearing 414 fixed to the top of the lower air collecting frame 220, and the inner wall of the bottom bearing 414 is rotatably connected to a rotating shaft 411, and three stirring blades 412 are vertically and equidistantly distributed on the surface of the rotating shaft 411, and the three stirring blades 412 are distributed equidistantly in a ring shape. The rotation of the rotating shaft 411 can drive the three stirring blades 412 on the surface to rotate, and the distribution of the stirring blades 412 can ensure that the animal fat is stirred more evenly and fully.

[0028] Considering that the rotation of the rotating shaft 411 requires power support, a reduction motor 410 is fixedly connected to the top of the rotating shaft 411, and the bottom of the reduction motor 410 is fixedly connected to the top of the extraction barrel 100. The operation of the reduction motor 410 can make the motor shaft rotate to drive the rotating shaft 411 to rotate.

[0029] Taking into account that the supporting force is insufficient when the heat exchange tube 300 is connected to the empty slots opened by the lower gas collecting frame 220 and the upper gas collecting frame 210, four supports 310 are provided on the inner wall of the extraction barrel 100. The bottoms of two supports 310 are in contact with the top of the lower gas collecting frame 220, and the tops of the other two supports 310 are in contact with the bottom of the upper gas collecting frame 210. A plurality of circular holes are provided on the surface of the support 310, and the inner walls of the circular holes are adapted to be connected to the surface of the heat exchange tube 300. The four supports 310 are respectively in contact with the lower gas collecting frame 220 and the upper gas collecting frame 210, thereby providing additional supporting force for the heat exchange tube 300, effectively solving the problem of insufficient supporting force when the heat exchange tube 300 is connected to the empty slots opened by the upper and lower gas collecting frames. Secondly, the circular holes on the surface of the support 310 are adapted to be connected to the heat exchange tube 300, which can further fix the position of the heat exchange tube 300.

[0030] Taking into account the long length of the heat exchange tube 300, during the process of transmitting gas, once the gas pressure is too high, the heat exchange tube 300 will shake. Therefore, the inner wall of the extraction barrel 100 is fixedly connected with a fixture 320. The inner wall of the fixture 320 contacts the surface of the heat exchange tube 300, and its function is to fix the middle part of the heat exchange tube 300. By fixing the heat exchange tube 300 inside the fixture 320, it can be prevented from shaking due to excessive gas pressure during the gas transmission process. The setting of the fixture 320 can effectively enhance the stability of the heat exchange tube 300 and prevent it from shaking significantly during the operation of the equipment, thereby ensuring that the connection between the heat exchange tube 300 and the upper and lower gas collecting frames is firm and reliable.

[0031] Taking into account the limited life of the nano-layer coating on the surface of the heat exchange tube 300, a scraper 413 is fixedly connected to one end of the stirring blade 412 away from the rotating shaft 411, and the surface of the scraper 413 is in contact with the surface of the heat exchange tube 300. The stirring blade 412 can be rotated by the operation of the stirring component 400, and the rotation of the stirring blade 412 can drive the scraper 413 to contact the surface of the stirring blade 412, so as to effectively scrape off the animal fat that may be attached to the surface of the heat exchange tube 300.

[0032] The working principle of the present invention is as follows: by placing the animal fat to be extracted in the feed pipe 101, the animal fat will reach the inner cavity of the extraction barrel 100 and the top of the lower gas collecting frame 220. At this time, the air intake pipe 221 is connected to the exhaust gas of the boiler chimney. The gas entering through the air intake pipe 221 will first reach N1. At this time, the gas will enter N2 along the heat exchange pipe 300 connected to the top. The gas entering N2 will enter N3 through the heat exchange pipe 300. The gas reaching N3 will enter N4 along the heat exchange pipe 300. The gas reaching N4 will reach N5 along the transmission pipe 225, and enter N6 from the heat exchange pipe 300 connected to the top of N5. The gas reaching N6 will reach N7 along the transmission pipe 225 connected to the upper gas collecting frame 210, and then from the bottom of N7. The heat exchange tube 300 connected to the heat exchange tube 300 reaches N8 and is discharged from the air outlet pipe 222 to realize the circulation of gas. When the gas flows in the heat exchange tube 300, the heat it carries is transferred to the heat exchange tube 300, thereby heating the animal fat inside the extraction barrel 100. The motor shaft can be rotated on the inner wall of the bearing of the upper gas collecting frame 210 through the operation of the reduction motor 410, and the rotating shaft 411 can be driven to rotate. The rotation of the rotating shaft 411 can drive the three stirring blades 412 on the surface to rotate, and the distribution of the stirring blades 412 can ensure that when stirring the animal fat, the stirring is more uniform and sufficient. The rotation of the stirring blades 412 can drive the scraper 413 to contact the surface of the stirring blades 412, so as to effectively scrape off the animal fat that may be attached to the surface of the heat exchange tube 300. At this time, the extracted oil will be discharged from the device from the discharge port 102.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An animal fat extraction and preheating device, comprising an extraction barrel (100), wherein the upper surface of the extraction barrel (100) is fixedly connected to a feed pipe (101), and the lower surface of the extraction barrel (100) is fixedly connected to a discharge port (102), characterized in that: A stirring assembly (400) for stirring and mixing animal fat is provided inside the extraction barrel (100); heat exchange channels (200) are formed near the top and bottom of the extraction barrel (100); a heat exchange tube (300) is provided between the two heat exchange channels (200); and the heat exchange tube (300) is located near the edge of the inner cavity of the extraction barrel (100); A channel is formed between the heat exchange channel (200) and the heat exchange tube (300) to connect the bottom, interior and top of the extraction barrel (100) in a single line. The channel is used to receive heat discharged from the boiler chimney and evenly preheat the animal fat.

2. The animal fat extraction and preheating equipment according to claim 1, characterized in that: The heat exchange channel (200) at least comprises an upper air collecting frame (210) connected to the top of the heat exchange tube (300), and a lower air collecting frame (220) connected to the bottom of the heat exchange tube (300); an air inlet pipe (221) is fixedly connected to the inner wall of the lower air collecting frame (220); and an air outlet pipe (222) is fixedly connected to the inner wall of the lower air collecting frame (220). The inner walls of the lower air collecting frame (220) and the upper air collecting frame (210) are both provided with four partitions (223), and the function of the partitions (223) is to connect the area divided by the lower air collecting frame (220) and the upper air collecting frame (210) with the heat exchange tube (300).

3. The animal fat extraction and preheating equipment according to claim 2, characterized in that: The top of the lower air collecting frame (220) is provided with a plurality of empty grooves adapted to communicate with the bottom of the heat exchange tube (300), and the bottom of the upper air collecting frame (210) is provided with a plurality of empty grooves adapted to communicate with the top of the heat exchange tube (300).

4. The animal fat extraction and preheating equipment according to claim 3, characterized in that: The inner wall of the upper gas collecting frame (210) is provided with a plurality of ventilation grooves (224), the inner wall of the lower gas collecting frame (220) is provided with two ventilation grooves (224), and the inner walls of the two ventilation grooves (224) are fixedly connected with a transmission pipeline (225).

5. The animal fat extraction and preheating equipment according to claim 3, characterized in that: The surface of the heat exchange tube (300) is provided with a nano coating or a PTFE+PTFA coating to reduce the adhesion between the animal fat and the heat exchange tube (300), thereby effectively preventing the fat from adhering to the surface of the heat exchange tube (300).

6. The animal fat extraction and preheating equipment according to claim 2, characterized in that: The stirring assembly (400) includes a bottom bearing (414) fixed on the top of the lower air collecting frame (220), the inner wall of the bottom bearing (414) is rotatably connected to a rotating shaft (411), and three stirring blades (412) are vertically and equidistantly distributed on the surface of the rotating shaft (411), and the three stirring blades (412) are distributed equidistantly in a ring shape.

7. The animal fat extraction and preheating equipment according to claim 6, characterized in that: The top of the rotating shaft (411) is fixedly connected to a reduction motor (410), and the bottom of the reduction motor (410) is fixedly connected to the top of the extraction barrel (100).

8. The animal fat extraction and preheating equipment according to claim 2, characterized in that: The inner wall of the extraction barrel (100) is provided with four supports (310), the bottoms of two of the supports (310) are in contact with the top of the lower gas collecting frame (220), and the tops of the other two supports (310) are in contact with the bottom of the upper gas collecting frame (210), and a plurality of circular holes are provided on the surface of the supports (310), and the inner walls of the circular holes are adapted to be connected to the surface of the heat exchange tube (300).

9. The animal fat extraction and preheating equipment according to claim 2, characterized in that: The inner wall of the extraction barrel (100) is fixedly connected to a fixer (320), and the inner wall of the fixer (320) contacts the surface of the heat exchange tube (300), and its function is to fix the middle part of the heat exchange tube (300).

10. The animal fat extraction and preheating equipment according to claim 6, characterized in that: One end of the stirring blade (412) away from the rotating shaft (411) is fixedly connected to a scraper (413), and the surface of the scraper (413) is in contact with the surface of the heat exchange tube (300).

Images