Vegetable and fruit quick-freezing device

Abstract

The invention discloses a vegetable and fruit quick-freezing device, and relates to the technical field of agricultural product quick-freezing. The device comprises a quick-freezing unit, each quick-freezing unit comprises two conveying parts which are the same in structure and are symmetrically arranged, and a first conveying belt is arranged between the two conveying parts. First limiting blocking frames are arranged at the upper end of the conveying component, and a plurality of material separating plates evenly arranged along the outer contour of the first conveying belt are arranged on the portion, between the two first limiting blocking frames, of the first conveying belt. A quick-freezing plug is arranged on the first conveying belt and located between every two adjacent material partition plates, and the quick-freezing plugs are located between the two conveying components. The quick-freezing plug comprises a heat exchange shell and a superconductive heat exchange pipe arranged on the heat exchange shell, and the superconductive heat exchange pipe penetrates through the first conveying belt and extends to the outer side of the first conveying belt. A flow divider is rotationally arranged on the conveying component, and a secondary refrigerant inlet and a secondary refrigerant outlet of the quick-freezing plug are connected with the refrigerating unit through the flow divider. According to the device, cutting operation is not needed, and quick freezing of the whole fruit can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of quick freezing of agricultural products, in particular to a quick freezing device for fruits and vegetables. Background Art

[0002] The popularity of cold chain transportation in my country is relatively low, especially for the fruit and vegetable industry with high moisture content. Due to the high moisture content, strong respiration, and short storage time, the spoilage rate will be high during the relatively primitive "cold chain" transportation process such as wrapping in a small quilt and a small amount of ice.

[0003] Quick freezing technology can reduce the temperature of food to below its freezing point in a very short time. It is a modern food processing technology that prolongs the storage time of agricultural products such as fruits and vegetables and maintains the quality of the fruit.

[0004] However, in the quick freezing process of fruits and vegetables, they are first washed and the skin is removed, then cut into blocks or dices, and then the individual quick freezing technology (IQF) is used to quickly lower the internal temperature below -35°C, so that they can be crystallized in a short time and reach a frozen state. Although this method can achieve rapid freezing, a large amount of juice and water will be lost during the cutting process, which will cause the loss and destruction of nutrients. Summary of the invention

[0005] In response to the above problems, the present application provides a vegetable and fruit quick-freezing device, which can achieve quick freezing of whole fruits without the need for cutting operations, thereby maintaining freshness and nutritional value for a longer period of time.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A quick freezing device for fruits and vegetables, comprising a quick freezing unit;

[0008] The quick freezing unit comprises two conveying components with the same structure and symmetrical arrangement and a first driving component for driving the two conveying components to operate synchronously;

[0009] A first conveyor belt is arranged between the two conveying components, and the first conveyor belt can move under the drive of the two conveying components, so as to convey the material from one end of the quick freezing unit to the other end;

[0010] A first limit stop frame is provided at the upper end of the conveying component, and a plurality of material separation plates evenly arranged along the outer contour of the first conveying belt are provided on the outer side surface of the first conveying belt and between the two first limit stop frames;

[0011] When the material partition plate is located between the two first limit stop frames, the first limit stop frame can block the area formed by the two adjacent material partition plates to form a quick-freezing space for accommodating materials;

[0012] A quick freezing plug is provided between two adjacent material partition plates on the first conveyor belt, and the quick freezing plug is located between the two conveying components;

[0013] The quick-freezing plug comprises a heat exchange shell, on which a superconducting heat exchange tube is arranged, and the superconducting heat exchange tube passes through the first conveyor belt and extends to the outside of the first conveyor belt;

[0014] A diverter is rotatably arranged on the conveying component, and the diverter includes a confluence port and a plurality of diverter ports corresponding to the quick-freezing plugs one by one. The coolant inlet of the quick-freezing plug is connected to a corresponding diverter port on one of the diverters through a liquid inlet pipeline, and the coolant outlet of the quick-freezing plug is connected to a corresponding diverter port on another of the diverters through a liquid outlet pipeline. The confluence ports of the two diverters are respectively connected to the refrigeration unit through a rotating joint.

[0015] Furthermore, the conveying component includes a first stand, and a first conveying roller for driving the first conveyor belt to run is arranged on the inner side of the first stand.

[0016] Furthermore, the first driving component includes a first driving shaft and a first driving motor for driving the first driving shaft to rotate, the first driving shaft is located below the first conveyor belt, and both ends of the first driving shaft are rotatably connected to the first stand through bearing assemblies, and the two ends of the first driving shaft are connected to the first conveying roller serving as an active roller in the conveying component through a second transmission mechanism.

[0017] Furthermore, the diverter includes a confluence portion having a confluence cavity, the confluence portion is provided with a plurality of diversion ports connected to the confluence cavity, a confluence tube connected to the confluence cavity is provided on the outer surface of the confluence portion, and the confluence tube is rotatably connected to the first stand via a bearing assembly.

[0018] Furthermore, the thickness at both ends of the first conveyor belt is greater than the thickness in the middle, and a first step surface is formed on the inner side surface of the first conveyor belt. The first conveyor roller is a step shaft structure matched with the first conveyor belt.

[0019] Furthermore, the quick freezing unit also includes a second driving component for driving the two diverters to rotate synchronously.

[0020] Furthermore, the second driving component includes a second driving shaft and a second driving motor for driving the second driving shaft to rotate, the second driving shaft is located below the first conveyor belt, and both ends of the second driving shaft are rotatably connected to the first stand through bearing assemblies, and the two ends of the second driving shaft are connected to the manifold of the diverter through a fourth transmission mechanism.

[0021] Furthermore, it also includes a loading unit for conveying materials to the quick-freezing unit, the loading unit includes a main frame and a conveying assembly arranged on the main frame, and second limit stops are respectively arranged on the upper side surface of the main frame at both sides of the conveying assembly, and a thumb wheel is rotatably arranged on the main frame above the conveying assembly, the thumb wheel is located at one end of the second limit stop frame, and the rotation axis of the thumb wheel is parallel to the conveying direction of the conveying assembly, and a first material guide groove is arranged on the main frame at the side of the thumb wheel facing the quick-freezing unit, and when the thumb wheel rotates around the rotation axis under the drive of the third driving motor, the fins of the thumb wheel can push the materials on the conveying assembly into the first material guide groove, and move the materials one by one into the quick-freezing space of the quick-freezing unit through the first material guide groove.

[0022] Furthermore, a limiting plate is provided on the main frame at a side of the thumbwheel facing away from the second limiting stop frame.

[0023] Furthermore, the quick freezing unit is located in an insulation box made of insulation material.

[0024] The beneficial effects of the present invention are:

[0025] A vegetable and fruit quick-freezing device provided in an embodiment of the present application is capable of directly transferring cold energy to the center of the fruits and vegetables to be quick-frozen by providing a superconducting quick-freezing plug composed of multiple superconducting heat exchange tubes, so that the fruits and vegetables can quickly complete the internal cooling, crystallization and freezing process. This not only ensures the uniformity of ice crystal formation and improves the quick-freezing efficiency, but also can quickly transfer the cold energy to the whole fruit after washing and peeling, avoiding the loss and destruction of juice and nutrients caused by the cutting process, thereby maintaining freshness for a longer period of time and ensuring the nutritional value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a vegetable and fruit quick freezing device provided in one embodiment of the present application;

[0027] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0028] Figure 3 A top view of a vegetable and fruit quick freezing device provided in one embodiment of the present application;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the feeding unit;

[0030] Figure 5 It is a top view of the feeding unit;

[0031] Figure 6 for Figure 5 AA section view in;

[0032] Figure 7 Schematic diagram of the three-dimensional structure of the quick freezing unit Figure 1 ;

[0033] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B;

[0034] Fig. 9 for Figure 7 A schematic diagram of the enlarged structure of the middle C part;

[0035] Fig.10 Schematic diagram of the three-dimensional structure of the quick freezing unit Figure 2 ;

[0036] Fig.11 for Fig.10 A schematic diagram of the enlarged structure of the D part;

[0037] Fig.12 is the front view of the quick freezing unit;

[0038] Fig.13 is a top view of the quick freezing unit;

[0039] Fig.14 for Fig.12 BB section view in;

[0040] Fig.15 for Fig.13 CC section view in;

[0041] Fig.16 It is an exploded view of the quick freezing unit;

[0042] Fig.17 This is a schematic diagram of the installation structure of the quick freezing plug;

[0043] Fig.18 It is an exploded view of the conveying component;

[0044] Fig.19 for Fig.18 A schematic diagram of the enlarged structure of part E in the middle;

[0045] Fig. 20 This is a schematic diagram of the three-dimensional structure of a vegetable and fruit quick-freezing device provided in another embodiment of the present application.

[0046] In the figure: 1, quick freezing unit; 11, conveying component; 1111, first stand; 1112, mounting frame; 1113, first connecting beam; 1114, baffle; 112, first conveying roller; 113, diverter; 1131, confluence; 1132, diversion port; 1133, confluence pipe; 12, first driving component; 121, first driving shaft; 122, first driving motor; 123, first transmission mechanism; 124, second transmission mechanism; 13, first conveyor belt; 131, material separator; 14 , first limit stop frame; 141, horizontal plate; 142, vertical plate; 143, rib plate; 15, quick freezing plug; 151, heat exchange shell; 1511, coolant inlet; 1512, coolant outlet; 1513, ear plate; 152, superconducting heat exchange tube; 161, liquid inlet pipeline; 162, liquid outlet pipeline; 17, second driving component; 171, second driving shaft; 172, second driving motor; 173, third transmission mechanism; 174, fourth transmission mechanism; 18, second connecting beam; 181, connecting plate;

[0047] 2. Feeding unit; 21. Main frame; 211. Second vertical frame; 212. Third connecting beam; 213. Door frame; 2131. Cross beam; 2132. Vertical beam; 22. Conveying assembly; 221. Second conveying belt; 222. Second conveying roller; 223. Fourth driving motor; 224. Sixth transmission mechanism; 23. Second limit stop frame; 24. Pulley; 241. Central axis; 242. Fin; 25. First guide trough; 26. Limit plate; 27. Third driving motor; 28. Fifth transmission mechanism;

[0048] 3. Materials. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application, and the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative work on the basis of the embodiments of the present application shall belong to the protection scope of the present application.

[0050] For the convenience of description, the coordinate system is defined as Figure 1 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0051] Embodiment 1

[0052] like Figure 1 and Figure 3 As shown, a quick freezing device for fruits and vegetables comprises a quick freezing unit 1 and a feeding unit 2 for conveying materials 3 to the quick freezing unit 1 .

[0053] like Figure 7 , Fig.10 and Fig.16 As shown, the quick freezing unit 1 comprises two conveying components 11 of the same structure and arranged symmetrically and a first driving component 12 for driving the two conveying components 11 to operate synchronously. A first conveyor belt 13 is arranged between the two conveying components 11. The conveying component 11 comprises a first stand 1111, and a first conveying roller 112 for driving the first conveyor belt 13 to operate is arranged on the inner side of the first stand 1111 (the inner side is the side opposite to the two conveying components 11). The first conveying rollers 112 of the two conveying components 11 are respectively inserted into the first conveyor belt 13 from both sides, and the first conveyor belt 13 can move under the drive of the two conveying components 11, so as to transport the material 3 from one end to the other end of the quick freezing unit 1.

[0054] As a specific implementation method, Fig.18 As shown, in this embodiment, a mounting frame 1112 is provided on the inner side of the first frame 1111 (the side opposite to the two conveying components 11 is the inner side), a first connecting beam 1113 is provided between the mounting frame 1112 and the first frame 1111, and the mounting frame 1112 and the first frame 1111 are connected as a whole through the first connecting beam 1113. Exemplarily, the two ends of the first connecting beam 1113 are fixedly connected to the first frame 1111 and the mounting frame 1112 by welding, respectively. A plurality of first conveying rollers 112 are provided between the mounting frame 1112 and the first frame 1111 around the mounting frame 1112, one end of the first conveying roller 112 is rotatably connected to the first frame 1111 through a bearing assembly, and the other end of the first conveying roller 112 is rotatably connected to the mounting frame 1112 through a bearing assembly.

[0055] The first driving component 12 includes a first driving shaft 121 and a first driving motor 122 for driving the first driving shaft 121 to rotate. The first driving shaft 121 is located below the first conveyor belt 13, and the two ends of the first driving shaft 121 are rotatably connected to the first stand 1111 through bearing assemblies. The power output shaft of the first driving motor 122 is connected to the first driving shaft 121 through a first transmission mechanism 123, a coupling or a direct connection. As a specific embodiment, in this embodiment, the power output shaft of the first driving motor 122 is connected to the first driving shaft 121 through a first transmission mechanism 123, and the first transmission mechanism 123 adopts a synchronous belt drive. The first conveying roller 112 includes an active roller, a driven roller and a support roller. Exemplarily, according to Figure 1In the coordinate system shown, the first conveying roller 112 at the upper right end is the active roller, the first conveying roller 112 at the upper left end is the driven roller, and the remaining first conveying rollers 112 are support rollers. Both ends of the first driving shaft 121 are connected to the first conveying rollers 112 as active rollers in the conveying component 11 through the second transmission mechanism 124.

[0056] like Figure 7 , Figure 8 , Fig.14 , Fig.15 and Fig.16 As shown, a first limit stop frame 14 is provided at the upper end of the conveying component 11, and the outer end portion of the first limit stop frame 14 (the inner side is the side opposite to the two conveying components 11) is fixedly connected to the first stand 1111 of the conveying component 11 in a detachable manner. A plurality of material separators 131 are evenly arranged along the outer contour of the first conveying belt 13 on the outer side surface of the first conveyor belt 13, located between the two first limit stop frames 14. When the material separator 131 is located between the two first limit stop frames 14, the first limit stop frame 14 can block the area with openings at both ends formed by the two adjacent material separators 131, forming a quick-freezing space for accommodating the material 3, and each quick-freezing space is only allowed to accommodate a single material 3. A quick-freezing plug 15 is provided on the first conveyor belt 13, located between the two adjacent material separators 131, and the quick-freezing plug 15 is located between the two conveying components 11.

[0057] As a specific implementation, the partition plate 131 described in this embodiment is made of a material with a certain flexibility such as plastic, rubber or silicone, and the partition plate 131 is fixedly connected to the first conveyor belt 13 by bonding. The first limit stop frame 14 includes a horizontal plate 141, and the outer end of the horizontal plate 141 (the inner side is the side opposite to the two conveying components 11) is fixedly connected to the upper end surface of the first vertical frame 1111 by screws, and the inner end of the horizontal plate 141 (the inner side is the side opposite to the two conveying components 11) is provided with a vertical plate 142 extending upward perpendicular to the horizontal plate 141, and the horizontal plate 141 and the vertical plate 142 together form an L-shaped structure. A plurality of rib plates 143 are evenly distributed along the length direction between the horizontal plate 141 and the vertical plate 142. Exemplarily, as Fig.14 As shown, the distance M between the vertical plate 142 and the spacer plate 131 is 2-3 mm.

[0058] like Fig.17The quick-freezing plug 15 includes a heat exchange shell 151 disposed inside the first conveyor belt 13, and the heat exchange shell 151 is fixedly connected to the first conveyor belt 13. A superconducting heat exchange tube 152 made of superconducting material is disposed on the side of the heat exchange shell 151 facing the first conveyor belt 13, one end of the superconducting heat exchange tube 152 passes through the side wall of the heat exchange shell 151 and is inserted into the heat exchange shell 151, and is fixedly connected to the side wall of the heat exchange shell 151. The other end of the superconducting heat exchange tube 152 passes through the first conveyor belt 13 and extends to the outside of the first conveyor belt 13. The first conveyor belt 13 is provided with an avoidance hole for allowing the superconducting heat exchange tube 152 to pass through. A coolant inlet 1511 and a coolant outlet 1512 are respectively disposed at both ends of the heat exchange shell 151.

[0059] As a specific implementation, the cross section of the heat exchange shell 151 in this embodiment is a square structure, and the two ends of the side wall of the heat exchange shell 151 that is in contact with the first conveyor belt 13 are respectively provided with ear plates 1513, and the ear plates 1513 are fixedly connected to the first conveyor belt 13 through a bolt assembly. The heat exchange shell 151 is a rectangular parallelepiped structure, and the length direction is perpendicular to the conveying direction of the conveying component 11. A plurality of superconducting heat exchange tubes 152 are arranged on the heat exchange shell 151, and the plurality of superconducting heat exchange tubes 152 are evenly arranged in a straight line along the length direction of the heat exchange shell 151.

[0060] like Fig.16 As shown, the first upright frames 1111 of the two conveying components 11 are respectively provided with diverters 113, and the diverters 113 are rotatably connected to the first upright frames 1111 via bearing assemblies.

[0061] like Fig.14 and Fig.19 As shown, the diverter 113 includes a confluence port and a plurality of diverter ports 1132, and the number of the diverter ports 1132 is the same as the number of the quick freezing plugs 15, and they correspond one to one. The refrigerant inlet 1511 of the quick freezing plug 15 is connected to the corresponding diverter port 1132 on one of the diverters 113 through the liquid inlet pipeline 161, and the refrigerant outlet 1512 of the quick freezing plug 15 is connected to the corresponding diverter port 1132 on the other diverter 113 through the liquid outlet pipeline 162. The confluence ports of the two diverters 113 are respectively connected to the refrigeration unit (not shown in the figure) through a rotary joint (not shown in the figure).

[0062] As a specific implementation method, according to Figure 1In the coordinate system shown, the refrigerant inlet 1511 of the quick freezing plug 15 in this embodiment is connected to the corresponding diverter port 1132 on the diverter 113 at the front side through the liquid inlet pipeline 161, and the refrigerant outlet 1512 of the quick freezing plug 15 is connected to the corresponding diverter port 1132 on the diverter 113 at the rear side through the liquid outlet pipeline 162. The confluence port of the diverter 113 at the front side is connected to the outlet of the refrigeration unit through a rotary joint (not shown in the figure) and a pipeline (not shown in the figure), and the confluence port of the diverter 113 at the rear side is connected to the inlet of the refrigeration unit through a rotary joint (not shown in the figure) and a pipeline (not shown in the figure).

[0063] As a specific implementation method, Fig. 9 , Fig.12 , Fig.14 and Fig.19 As shown, the flow divider 113 described in this embodiment includes a confluence portion 1131 with a cylindrical structure and a hollow interior, and the internal cavity of the confluence portion 1131 is a confluence cavity. A plurality of flow diversion ports 1132 connected to the confluence cavity are evenly arranged along the circumferential direction on the cylindrical side surface of the confluence portion 1131, and a confluence pipe 1133 connected to the confluence cavity is arranged on the outer side surface of the confluence portion 1131 (the side opposite to the two conveying components 11 is the inner side), and the two ends of the confluence pipe 1133 are rotatably connected to the mounting frame 1112 and the first stand 1111 through bearing assemblies, respectively, and the opening of the end of the confluence pipe 1133 facing away from the confluence portion 1131 is the confluence port.

[0064] Furthermore, if Fig.16 and Fig.18 As shown, a detachable baffle 1114 is fixedly provided on the inner side surface of the mounting frame 1112 (the side opposite to the two conveying components 11 is the inner side), and the baffle 1114 is provided with an escape opening for avoiding the diverter 113. As a specific implementation, the baffle 1114 described in this embodiment is fixedly connected to the mounting frame 1112 by screws. By providing the baffle 1114, the liquid inlet pipeline 161 and the liquid outlet pipeline 162 can be restricted between the baffles 1114 of the two conveying components 11, so as to prevent the liquid inlet pipeline 161 or the liquid outlet pipeline 162 from being hooked on the mounting frame 1112 during operation.

[0065] Furthermore, if Fig.14 and Fig.17As shown, the thickness of the two ends of the first conveyor belt 13 is greater than the thickness in the middle, and a first step surface is formed on the inner side of the first conveyor belt 13. Correspondingly, the first conveyor roller 112 is a step shaft structure, which includes a first shaft section and a second shaft section in sequence from the outside to the inside (the side opposite to the two conveying components 11 is the inside), and the diameter of the first shaft section is smaller than the diameter of the second shaft section, and a second step surface is formed between the first shaft section and the second shaft section. The first shaft section fits with the end of the first conveyor belt 13 with a larger thickness, and the second shaft section fits with the middle part of the first conveyor belt 13 with a thinner thickness, and the first step surface is pressed against the second step surface.

[0066] The reason for such design is that, during use, when the material 3 is placed on the first conveyor belt 13, the material 3 is located between the two conveying components 11. Due to the lack of support, the first conveyor belt 13 will have a tendency to slip off the first conveyor roller 112 under the action of the gravity of the material 3. By providing a first step surface on the inner side surface of the first conveyor belt 13 and designing the first conveyor roller 112 as a step shaft structure matched with the first conveyor belt 13, this tendency to slip can be resisted.

[0067] Furthermore, if Fig.16 As shown, the quick freezing unit 1 further comprises a second driving component 17 for driving the two diverters 113 to rotate synchronously.

[0068] like Fig. 9 , Fig.10 and Fig.11 As shown, the second driving component 17 includes a second driving shaft 171 and a second driving motor 172 for driving the second driving shaft 171 to rotate. The second driving shaft 171 is located below the first conveyor belt 13, and the two ends of the second driving shaft 171 are rotatably connected to the first stand 1111 through bearing assemblies. The power output shaft of the second driving motor 172 is connected to the second driving shaft 171 through a third transmission mechanism 173, a coupling or a direct connection. As a specific embodiment, in this embodiment, the power output shaft of the second driving motor 172 is connected to the second driving shaft 171 through a third transmission mechanism 173, and the third transmission mechanism 173 adopts synchronous belt transmission. The two ends of the second driving shaft 171 are respectively connected to the manifold 1133 of the diverter 113 through a fourth transmission mechanism 174. Exemplarily, the fourth transmission mechanism 174 adopts synchronous belt transmission.

[0069] By setting up the second driving component 17, power can be provided for the rotation of the diverter 113. Compared with the passive rotation driven by the liquid inlet pipeline 161 and the liquid outlet pipeline 162, the risk of the liquid inlet pipeline 161 and the liquid outlet pipeline 162 falling off can be effectively reduced, thereby extending the service life.

[0070] Furthermore, if Figure 7 , Fig.10 and Fig.16 As shown, a second connecting beam 18 is respectively arranged between the two first frames 1111 and located on both sides of the first conveyor belt 13, and both ends of the second connecting beam 18 are respectively fixedly connected to the first frame 1111 in a detachable manner. As a specific implementation, in this embodiment, two second connecting beams 18 are respectively arranged between the two first frames 1111 and located on both sides of the first conveyor belt 13, and connecting plates 181 are respectively arranged at both ends of the second connecting beam 18, and the connecting plates 181 are fixedly connected to the first frames 1111 through bolt assemblies. Exemplarily, the connecting plates 181 are fixedly connected to the second connecting beam 18 by welding.

[0071] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the loading unit 2 includes a main frame 21 and a conveying assembly 22 arranged on the main frame 21. Second limit stops 23 are respectively arranged on both sides of the conveying assembly 22 on the upper side surface of the main frame 21, and the second limit stops 23 are used to prevent the material 3 from falling from the conveying assembly 22 during the conveying process. A thumbwheel 24 is rotatably arranged on the main frame 21 above the conveying assembly 22, and the thumbwheel 24 is located at one end of the second limit stop 23, and the rotation axis of the thumbwheel 24 is parallel to the conveying direction of the conveying assembly 22. A first material guide trough 25 is arranged on the main frame 21 on the side of the thumbwheel 24 facing the quick-freezing unit 1, and the opening of one end of the first material guide trough 25 faces the thumbwheel 24, and the opening of the other end of the first material guide trough 25 faces one end of the quick-freezing unit 1. When the thumbwheel 24 rotates around the rotation axis driven by the third drive motor 27, the fins 242 of the thumbwheel 24 can push the material 3 on the conveying assembly 22 into the first material guide trough 25, and move the materials 3 one by one into the quick-freezing space of the quick-freezing unit 1 through the first material guide trough 25. By controlling the rotation speed of the third drive motor 27 and the first drive motor 122, the materials 3 can be allowed to enter the quick-freezing space one by one, thereby avoiding the situation where two materials 3 appear in one quick-freezing space or the quick-freezing space is vacant.

[0072] Furthermore, a limiting plate 26 is provided on the main frame 21 on the side of the thumbwheel 24 facing away from the second limiting stop frame 23. By providing the limiting plate 26, the terminal position of the material 3 conveying can be determined, so as to position it, and ensure that the thumbwheel 24 can accurately move the material 3 to achieve one-by-one loading.

[0073] As a specific implementation, the main frame 21 described in this embodiment includes two second frames 211 and a third connecting beam 212 for connecting the two second frames 211. Two portal frames 213 are arranged between the two second frames 211 and above the second frames 211, which span the conveying assembly 22. The thumbwheel 24 is located between the two portal frames 213. The thumbwheel 24 includes a central axis 241 and a plurality of radially evenly arranged fins 242 arranged on the central axis 241, and the two ends of the central axis 241 are rotatably connected to the portal frames 213 through bearing assemblies. The third drive motor 27 is fixedly arranged on the main frame 21 in a detachable manner, and the power output shaft of the third drive motor 27 is connected to the central axis 241 of the thumbwheel 24 through a fifth transmission mechanism 28. Exemplarily, the fifth transmission mechanism 28 adopts synchronous belt transmission.

[0074] As a specific implementation, the door frame 213 described in this embodiment includes a cross beam 2131, and both ends of the cross beam 2131 are respectively provided with vertical beams 2132 extending downward perpendicular to the cross beam 2131, the upper end of the vertical beam 2132 is fixedly connected to the cross beam 2131 by welding, and the lower end of the vertical beam 2132 is fixedly connected to the vertical frame by welding.

[0075] As a specific implementation, the limit plate 26 described in this embodiment is detachably fixedly arranged on the inner side surface (the side opposite to the two door frames 213 is the inner side) of the door frame 213 away from the second limit stop frame 23. Exemplarily, the limit plate 26 is fixedly arranged on the inner side surface of the door frame 213 away from the second limit stop frame 23 by screws.

[0076] As a specific implementation, the conveying assembly 22 described in this embodiment includes a second conveying belt 221, a second conveying roller 222 and a fourth driving motor 223 for driving the second conveying roller 222 to rotate. The second conveying roller 222 is located between the two second upright frames 211, and the two ends of the second conveying roller 222 are respectively connected to the second upright frames 211 through bearing assemblies. Exemplarily, the second conveying roller 222 includes an active roller, a driven roller and a support roller, and the active roller and the driven roller are respectively located at the two ends of the main frame 21, and the driven roller is a plurality of rollers and is located between the active roller and the driven roller. The fourth driving motor 223 is fixedly arranged on the main frame 21 in a detachable manner, and the power output shaft of the fourth driving motor 223 is connected to the second conveying roller 222 as the active roller through the sixth transmission mechanism 224. Exemplarily, the sixth transmission mechanism 224 adopts synchronous belt transmission.

[0077] As a specific implementation method, Figure 1 and Figure 3 As shown, the loading unit 2 described in this embodiment is located at one end of the quick-freezing unit 1 and is arranged vertically to the quick-freezing unit 1.

[0078] Furthermore, the height of the feeding unit 2 is higher than that of the quick-freezing unit 1 , and the first material guiding trough 25 is in a state of being inclined downward toward the quick-freezing unit 1 .

[0079] During operation, the materials 3 to be quick-frozen are transported one by one to the quick-freezing space of the quick-freezing unit 1 through the loading unit 2. When the materials 3 enter the quick-freezing space, the superconducting heat exchange tube 152 of the quick-freezing plug 15 will be inserted into the interior of the materials 3 and move toward the discharge side along with the first conveyor belt 13 of the quick-freezing unit 1. In the process of moving toward the discharge side along with the first conveyor belt 13, the refrigerant of the refrigeration unit enters the heat exchange shell 151 through the diverter 113 and the liquid inlet pipeline 161, and then returns to the refrigeration unit through the liquid outlet pipeline 162 and the diverter 113 to realize the refrigeration cycle. In this process, the cold carried by the refrigerant will exchange heat with the material 3 through the superconducting heat exchange tube 152. Since the superconducting material used in the superconducting heat exchange tube 152 has a thermal resistance close to zero at low temperatures, it can achieve efficient heat transfer, and the internal moisture can be quickly cooled and crystallized in about 2-3 minutes. When the material 3 moves to the discharge side of the quick-freezing unit 1, the quick-frozen material 3 will be separated from the quick-freezing plug 15 under the action of its own gravity and enter the next working process.

[0080] Furthermore, in order to avoid the loss of cold and the waste of energy, the quick freezing unit 1 is located in an insulation box (not shown in the figure) made of insulation material, one end of the insulation box is provided with a feed port, the first guide trough 25 extends through the feed port into the insulation box and is aligned with the feed end of the quick freezing unit 1. The other end of the insulation box is provided with a discharge port, the discharge end of the quick freezing unit 1 is provided with a second guide trough (not shown in the figure), one end of the second guide trough is fixedly connected to the first stand 1111 of the two conveying components 11 in a detachable manner, and the other end of the second guide trough extends through the discharge port to the outside of the insulation box.

[0081] Embodiment 2

[0082] like Fig. 20 As shown, the feeding unit 2 is arranged in parallel with the quick freezing unit 1, and the remaining structures are the same as those in the first embodiment.

[0083] Other embodiments obtained by those skilled in the art by combining, splitting, reorganizing, etc. the embodiments of the present application on the basis of the embodiments provided in the present application do not exceed the protection scope of the present application.

[0084] The above specific implementation methods have detailed the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. That is, any modifications, equivalent substitutions, improvements, etc. made on the basis of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A quick freezing device for fruits and vegetables, characterized in that: It comprises a quick freezing unit (1); The quick freezing unit (1) comprises two conveying components (11) of identical structure and symmetrical arrangement and a first driving component (12) for driving the two conveying components (11) to operate synchronously; A first conveyor belt (13) is arranged between the two conveying components (11), and the first conveyor belt (13) can move under the drive of the two conveying components (11), thereby conveying the material (3) from one end of the quick-freezing unit (1) to the other end; A first limit stop frame (14) is arranged at the upper end of the conveying component (11); and a plurality of material separation plates (131) are arranged uniformly along the outer contour of the first conveying belt (13) and between two of the first limit stop frames (14); When the material separator (131) is located between the two first limit stoppers (14), the first limit stoppers (14) can block the area formed by the two adjacent material separators (131) to form a quick-freezing space for accommodating the material (3); A quick freezing plug (15) is provided between two adjacent material separation plates (131) on the first conveyor belt (13), and the quick freezing plug (15) is located between the two conveying components (11); The quick-freezing plug (15) comprises a heat exchange shell (151), a superconducting heat exchange tube (152) is arranged on the heat exchange shell (151), and the superconducting heat exchange tube (152) passes through the first conveyor belt (13) and extends to the outside of the first conveyor belt (13); A flow divider (113) is rotatably arranged on the conveying component (11), and the flow divider (113) comprises a confluence port and a plurality of flow dividers (1132) corresponding one to one with the quick-freezing plugs (15); a coolant inlet (1511) of the quick-freezing plug (15) is connected to a corresponding flow divider (1132) on one of the flow dividers (113) via a liquid inlet pipeline (161); a coolant outlet (1512) of the quick-freezing plug (15) is connected to a corresponding flow divider (1132) on another of the flow dividers (113) via a liquid outlet pipeline (162); and the confluence ports of the two flow dividers (113) are respectively connected to the refrigeration unit via a rotary joint.

2. The vegetable and fruit quick freezing device according to claim 1, characterized in that: The conveying component (11) comprises a first stand (1111), and a first conveying roller (112) for driving the first conveying belt (13) to run is arranged on the inner side of the first stand (1111).

3. The vegetable and fruit quick freezing device according to claim 2, characterized in that: The first driving component (12) comprises a first driving shaft (121) and a first driving motor (122) for driving the first driving shaft (121) to rotate. The first driving shaft (121) is located below the first conveyor belt (13), and both ends of the first driving shaft (121) are rotatably connected to the first stand (1111) via bearing assemblies. Both ends of the first driving shaft (121) are connected to a first conveying roller (112) serving as an active roller in the conveying component (11) via a second transmission mechanism (124).

4. The vegetable and fruit quick freezing device according to claim 2, characterized in that: The diverter (113) includes a confluence portion (1131) having a confluence cavity, and the confluence portion (1131) is provided with a plurality of diversion ports (1132) connected to the confluence cavity. A confluence tube (1133) connected to the confluence cavity is provided on the outer surface of the confluence portion (1131), and the confluence tube (1133) is connected to the first stand (1111) in rotation via a bearing assembly.

5. The vegetable and fruit quick freezing device according to claim 1, characterized in that: The thickness at both ends of the first conveyor belt (13) is greater than the thickness in the middle, and a first step surface is formed on the inner side of the first conveyor belt (13). The first conveyor roller (112) is a step shaft structure that matches the first conveyor belt (13).

6. The vegetable and fruit quick freezing device according to claim 2, characterized in that: The quick freezing unit (1) further comprises a second driving component (17) for driving the two diverters (113) to rotate synchronously.

7. The vegetable and fruit quick freezing device according to claim 6, characterized in that: The second driving component (17) includes a second driving shaft (171) and a second driving motor (172) for driving the second driving shaft (171) to rotate. The second driving shaft (171) is located below the first conveyor belt (13), and both ends of the second driving shaft (171) are rotatably connected to the first stand (1111) through bearing assemblies. The two ends of the second driving shaft (171) are connected to the conduit (1133) of the diverter (113) through a fourth transmission mechanism (174).

8. The vegetable and fruit quick freezing device according to claim 1, characterized in that: The quick-freezing unit (1) further comprises a loading unit (2) for conveying materials (3) to the quick-freezing unit (1), wherein the loading unit (2) comprises a main frame (21) and a conveying assembly (22) arranged on the main frame (21), second limit stops (23) are arranged on the upper side surface of the main frame (21) on both sides of the conveying assembly (22), and a thumbwheel (24) is rotatably arranged on the main frame (21) above the conveying assembly (22), the thumbwheel (24) is located at one end of the second limit stop frame (23), and the thumbwheel (24) is arranged on the upper side surface of the main frame (21). ) is parallel to the conveying direction of the conveying component (22), and a first material guide groove (25) is provided on the main frame (21) on the side of the thumbwheel (24) facing the quick-freezing unit (1). When the thumbwheel (24) rotates around the rotation axis driven by the third drive motor (27), the fins (242) of the thumbwheel (24) can push the material (3) on the conveying component (22) into the first material guide groove (25), and move the materials (3) one by one into the quick-freezing space of the quick-freezing unit (1) through the first material guide groove (25).

9. The vegetable and fruit quick freezing device according to claim 8, characterized in that: A limiting plate (26) is provided on the main frame (21) at a side of the dial wheel (24) facing away from the second limiting stop frame (23).

10. The vegetable and fruit quick freezing device according to claim 8, characterized in that: The quick freezing unit (1) is located in a heat preservation box made of heat preservation material.

Images