Horizontal refrigeration stuffing stirrer

Abstract

The utility model relates to the technical field of refrigeration stirrers, in particular to a horizontal refrigeration stuffing stirrer, which comprises a stirring box, a stirring shaft rotationally connected with the stirring box, a rotary power source in transmission connection with the stirring shaft, a stirring rod mounted on the stirring shaft, and a refrigeration jacket mounted outside the stirring box, the stirring shaft is provided with a liquid discharge flow channel and a liquid inlet flow channel, a cold flow circulation assembly is installed between the liquid discharge flow channel and the liquid inlet flow channel, the stirring rod is a hollow pipe with two open ends, one end of the stirring rod is communicated with the liquid inlet flow channel, and the other end of the stirring rod is communicated with the liquid discharge flow channel. The liquid inlet flow channel and the liquid outlet flow channel are arranged in the stirring shaft and are matched with the hollow channel of the stirring rod, so that a refrigerant flows in the stirring component, heat generated by the stirring shaft and the stirring rod is effectively reduced, the overall refrigeration efficiency is improved, and the refrigeration jacket cools the outer wall surface of the stirring box; and the stirring shaft and the stirring rod perform deep refrigeration on the interior of the material to realize internal and external bidirectional temperature control.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration mixer technology, and in particular to a horizontal refrigeration filling mixer. Background Technology

[0002] In the food processing industry, especially in the production of frozen pasta products such as steamed buns and dumplings, the mixing and stirring process of fillings is one of the key steps affecting product quality. During the mixing process of traditional meat and vegetable fillings, factors such as friction between materials, high-speed movement of the mixing shaft, and ambient temperature can easily cause a temperature rise, leading to premature oil and water release from the meat, resulting in poor emulsification, deteriorated taste, and even the risk of bacterial growth, affecting food safety and shelf life. Therefore, to achieve low-temperature mixing, horizontal mixers with refrigeration functions are commonly used in industrial production.

[0003] Existing horizontal refrigeration mixers typically employ a jacketed structure for cooling (e.g., publication number: CN221982207U). This involves enclosing the mixing tank with a jacket shell, through which a cooling medium (such as chilled water, brine, ethylene glycol, or Freon) is circulated for heat exchange. Cooling is achieved through heat conduction between the tank wall and the material. The mixing tank of this type of equipment is generally horizontally box-shaped, with a horizontally arranged stirring shaft inside. Stirring rods are mounted on the stirring shaft, and rotation achieves material mixing. The refrigeration jacket is usually positioned around the main body of the mixing tank, and the cooling effect depends on the jacket area, the refrigerant flow rate, and the heat exchange efficiency between the jacket and the material.

[0004] However, traditional jacketed refrigeration mixers still have certain structural limitations. On the one hand, their cooling mainly relies on the walls of the mixing chamber, making it difficult to rapidly reduce the temperature at the center of the material, especially during large-scale, long-term mixing, where the internal temperature rise remains significant. On the other hand, the mixing shaft itself, due to prolonged high-speed rotation, can also become a heat source, further exacerbating the temperature rise. Furthermore, this type of structure is insufficient in terms of cooling uniformity, easily leading to undercooling at the edges and overheating in the center, affecting the overall mixing effect and temperature control accuracy. Utility Model Content

[0005] The purpose of this invention is to solve the problem of unsatisfactory cooling effect of jacketed refrigeration mixers mentioned in the background art, and to propose a horizontal refrigeration filling mixer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A horizontal refrigerated filling mixer includes a mixing box, a mixing shaft rotatably connected to the mixing box, a rotary power source driven by the mixing shaft, a mixing rod mounted on the mixing shaft, and a refrigeration jacket mounted outside the mixing box. The mixing shaft has a drain channel and a liquid inlet channel, and a cold flow circulation assembly is installed between the drain channel and the liquid inlet channel. The mixing rod is a hollow tube with open ends, one end of which is connected to the liquid inlet channel and the other end is connected to the drain channel.

[0008] The horizontal refrigerated filling mixer proposed in this utility model has the following advantages: by setting an inlet and outlet flow channels in the stirring shaft and cooperating with the hollow channel of the stirring rod, the refrigerant can flow inside the stirring components, effectively reducing the heat generated by the stirring shaft and stirring rod themselves, improving the overall refrigeration efficiency, the refrigeration jacket cools the outer wall of the mixing box, and the stirring shaft and stirring rod deeply cool the inside of the material, realizing bidirectional temperature control inside and outside. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the front cross-sectional structure of one embodiment of the present invention;

[0010] Figure 2 This is a schematic diagram of the installation structure of the stirring rod and stirring shaft of this utility model.

[0011] In the diagram: 1. Rotary power source; 2. Mixing box; 3. Mixing shaft; 4. Mixing rod; 5. Drainage channel; 6. Inlet channel; 7. Divider; 8. Rotary joint; 9. Three-way valve; 10. Refrigeration jacket; 11. Refrigeration cycle machine; 13. First hole; 14. Second hole; 15. Third hole; 16. Fourth hole; 17. Bending rod; 18. Connector; 19. Threaded sleeve; 20. Limiting protrusion; 21. Sealing ring; 22. Sealing gasket; 23. Stepped hole; 24. Mounting base; 25. Cold flow circulation pipeline. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0013] Reference Figures 1-2 A horizontal refrigerated filling mixer includes a mixing box 2, a mixing shaft 3 rotatably connected to the mixing box 2, a rotary power source 1 driven by the mixing shaft 3, a mixing rod 4 mounted on the mixing shaft 3, and a refrigeration jacket 10 mounted outside the mixing box 2. The mixing shaft 3 has a drain channel 5 and a liquid inlet channel 6. A cold flow circulation assembly is installed between the drain channel 5 and the liquid inlet channel 6. The mixing rod 4 is a hollow tube with open ends. One end of the mixing rod 4 is connected to the liquid inlet channel 6 and the other end is connected to the drain channel 5.

[0014] The stirring shaft 3 is driven to rotate by the rotary power source 1, which in turn drives the stirring rod 4 mounted on the stirring shaft 3 to rotate synchronously, thereby achieving thorough mixing of the filling. The mixing box 2, as the main structural component for containing the filling, is equipped with a cooling jacket 10 on its exterior. The cooling medium is circulated to reduce the overall temperature of the mixing box 2 and suppress the temperature rise during the mixing process.

[0015] Unlike traditional mixers, the stirring shaft 3 of this device has an inlet channel 6 and a outlet channel 5, which are isolated by an internal structure to form independent circulation channels. Under the action of the cold flow circulation component, the refrigerant enters the stirring shaft 3 through the inlet channel 6 and flows sequentially into the stirring rod 4. The stirring rod 4 is a hollow tube structure open at both ends, with one end connected to the inlet channel 6 and the other end connected to the outlet channel 5, allowing the refrigerant to pass through the entire stirring rod 4 to form a cooling path. After heat exchange, the refrigerant is discharged through the outlet channel 5 in the stirring shaft 3, completing one closed-loop refrigeration cycle.

[0016] This structure achieves simultaneous cooling of the center and outer wall of the material through the refrigerant channels inside the stirring shaft 3 and stirring rod 4 and the cooling jacket 10 outside the mixing tank 2, greatly improving the temperature control capability and efficiency during the stirring process.

[0017] In one embodiment, the drain channel 5 and the inlet channel 6 are both arranged along the axis of the stirring shaft 3, and the drain channel 5 and the inlet channel 6 are separated by the partition 7.

[0018] The stirring shaft 3 has a third hole 15 that communicates with the liquid inlet channel 6 and a fourth hole 16 that communicates with the liquid outlet channel 5. Mounting seats 24 are welded to both the third hole 15 and the fourth hole 16 of the stirring shaft 3. The two ends of the stirring rod 4 are fixedly assembled with the corresponding two mounting seats 24.

[0019] The stirring rod 4 is a hollow structure with open ends. Its two ends are fixedly mounted on two mounting bases 24, thus forming a reliable structural connection with the stirring shaft 3 and simultaneously achieving liquid flow communication. The coolant flows into the third hole 15 through the inlet channel 6, then enters the interior of the stirring rod 4, where it is effectively cooled through internal flow. Subsequently, it flows out from the other end through the fourth hole 16 into the drain channel 5 and is discharged, forming a complete cooling cycle.

[0020] The stirring rod 4 includes a bent rod portion 17 and connectors 18 located at both ends of the bent rod portion 17. The connectors 18 at both ends of each bent rod portion 17 are arranged in parallel. The two mounting seats 24 with the third hole 15 and the fourth hole 16 are arranged in parallel directions.

[0021] The bent rod 17 is processed into an irregular shape according to the structural requirements of the actual application scenario to adapt to the material flow characteristics or equipment space layout requirements in the mixing chamber. The two ends of the bent rod 17 are respectively provided with connectors 18, which are arranged in parallel to each other and are used in conjunction with the two mounting seats 24 on the mixing shaft 3.

[0022] Mounting seats 24 are respectively located at the third hole 15 and the fourth hole 16 of the stirring shaft 3, and the two mounting seats 24 are also arranged in parallel directions. Since the connector 18 and the mounting seat 24 are in the same direction, the stirring rod 4 can be inserted into both mounting seats 24 simultaneously in one direction during assembly, achieving quick and accurate assembly positioning. The two ends of the bent rod 17 are respectively provided with parallel connectors 18, which is beneficial for matching with the parallel arrangement structure of the mounting seats 24, simplifying the assembly operation and reducing assembly errors.

[0023] The connector 18 has a limiting protrusion 20 fixedly attached to its outer wall. A sealing ring 21 is sleeved on the outer periphery of the end of the connector 18. The mounting base 24 has a stepped hole 23. The connector 18 can be sealed and inserted into the stepped hole 23. A sealing gasket 22 is sandwiched between the end of the connector 18 and the step of the stepped hole 23. The connector 18 is locked to the mounting base 24 by a threaded sleeve 19.

[0024] The outer wall of the connector 18 is fixed with a limiting protrusion 20. When the connector 18 is locked to the mounting base 24 by the threaded sleeve 19, the limiting protrusion 20 abuts against the inner side of the threaded sleeve 19, which can provide a limiting effect for the connector 18 in the direction of the mounting base 24 during the tightening process, preventing the connector 18 from retracting or loosening during the tightening process.

[0025] Meanwhile, a sealing ring 21 is fitted on the outer periphery of the connector 18 end. After being inserted into the stepped hole 23 of the mounting base 24, it fits tightly against the hole wall, forming the first radial seal. A sealing washer 22 is sandwiched between the end of the connector 18 and the step of the stepped hole 23, providing a sealing guarantee in the axial direction. The entire connection structure is locked and fixed by the threaded sleeve 19, ensuring a stable connection and reliable sealing.

[0026] The cold flow circulation assembly includes a refrigeration circulator 11, which can cool the fluid and drive the flow motion. The stirring shaft 3 has a first hole 13 at one end that communicates with the liquid inlet channel 6 and a second hole 14 at the other end that communicates with the liquid outlet channel 5. The first hole 13 is connected to the discharge end of the refrigeration circulator 11, and the second hole 14 is connected to the inlet end of the refrigeration circulator 11.

[0027] The cold flow circulation assembly includes two rotary joints 8 that are rotatably connected to the stirring shaft 3. One rotary joint 8 is connected to the first hole 13 and to the discharge end of the refrigeration cycle machine 11, and the other rotary joint 8 is connected to the second hole 14 and to the inlet end of the refrigeration cycle machine 11.

[0028] The cold flow circulation assembly includes a refrigeration circulator 11, which functions to cool the fluid and promote its circulation. One end of the stirring shaft 3 has a first hole 13, which communicates with the inlet channel 6 inside the stirring shaft 3 to receive the cooling fluid discharged from the outlet of the refrigeration circulator 11. The other end of the stirring shaft 3 has a second hole 14, which communicates with the outlet channel 5 inside the stirring shaft 3 to return the fluid that has undergone heat exchange to the inlet of the refrigeration circulator 11.

[0029] To ensure a stable connection between the stirring shaft 3 and the refrigeration cycle unit 11 while the shaft is rotating, the cold flow circulation assembly is equipped with two rotary joints 8. One rotary joint 8 connects to the first hole 13 and also to the discharge end of the refrigeration cycle unit 11, allowing cold flow to enter; the other rotary joint 8 connects to the second hole 14 and also to the inlet end of the refrigeration cycle unit 11, allowing cold flow to exit. The two rotary joints 8 maintain an uninterrupted fluid passage while the stirring shaft 3 rotates, ensuring that the cooling liquid forms a stable closed loop throughout the system.

[0030] The refrigeration jacket 10 includes a cold flow circulation pipe 25, and the cold flow circulation assembly includes two three-way valves 9. One three-way valve 9 can connect the first hole 13, the inlet end of the cold flow circulation pipe 25, and the outlet end of the refrigeration cycle machine 11. The other three-way valve 9 can connect the second hole 14, the outlet end of the cold flow circulation pipe 25, and the inlet end of the refrigeration cycle machine 11.

[0031] The refrigeration jacket 10 is located outside the mixing tank 2, and its interior is equipped with a cold flow circulation pipe 25 to contain and guide the cooling liquid to flow along the outer wall of the mixing tank 2, thereby achieving external cooling. The refrigeration circulation assembly is equipped with two three-way valves 9 for fluid switching and combined control between the stirring shaft 3 and the refrigeration jacket 10.

[0032] One of the three-way valves 9 has its three ends connected to the first hole 13, the inlet of the cold flow circulation pipe 25, and the outlet of the refrigeration cycle machine 11, respectively. This valve guides a portion of the coolant discharged from the refrigeration cycle machine 11 into the stirring shaft 3, and the remaining portion into the cold flow circulation pipe 25. The other three-way valve 9 has its three ends connected to the second hole 14, the outlet of the cold flow circulation pipe 25, and the inlet of the refrigeration cycle machine 11, respectively. This valve guides the return coolant from the stirring shaft 3 and the cold flow circulation pipe 25 into the refrigeration cycle machine 11.

[0033] During operation, after the refrigeration cycle machine 11 starts, it provides low-temperature coolant to the system and promotes its circulation in the inlet channel 6, stirring rod 4 and cold flow circulation pipe 25. After absorbing heat, the coolant flows back through the outlet channel 5, the second hole 14 and the outlet end of the cold flow circulation pipe 25, completing a closed refrigeration circuit.

[0034] The refrigeration cycle unit 11 can be selected in different types according to actual application needs: for example, a compression chiller unit can be used to refrigerate and circulate chilled water by compressing refrigerant; or an integrated air-cooled or water-cooled cooling system can be used with a circulation pump to realize the circulation of refrigerant, etc.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A horizontal refrigerated filling mixer, comprising a mixing chamber (2), a mixing shaft (3) rotatably connected to the mixing chamber (2), a rotary power source (1) drively connected to the mixing shaft (3), a mixing rod (4) mounted on the mixing shaft (3), and a refrigeration jacket (10) mounted outside the mixing chamber (2), characterized in that, The stirring shaft (3) has a drain channel (5) and an inlet channel (6). A cold flow circulation assembly is installed between the drain channel (5) and the inlet channel (6). The stirring rod (4) is a hollow tube with open ends. One end of the stirring rod (4) is connected to the inlet channel (6) and the other end is connected to the drain channel (5).

2. The horizontal refrigerated filling mixer according to claim 1, characterized in that, The drain channel (5) and the inlet channel (6) are both arranged along the axis of the stirring shaft (3), and the drain channel (5) and the inlet channel (6) are separated by a partition (7).

3. A horizontal refrigerated filling mixer according to claim 1, characterized in that, The stirring shaft (3) has a third hole (15) communicating with the liquid inlet channel (6) and a fourth hole (16) communicating with the liquid outlet channel (5). The stirring shaft (3) has mounting seats (24) welded to the third hole (15) and the fourth hole (16). The two ends of the stirring rod (4) are fixedly assembled with the corresponding two mounting seats (24).

4. A horizontal refrigerated filling mixer according to claim 3, characterized in that, The stirring rod (4) includes a bent rod section (17) and connectors (18) located at both ends of the bent rod section (17). The connectors (18) at both ends of each bent rod section (17) are arranged in parallel. The two mounting seats (24) with the third hole (15) and the fourth hole (16) are arranged in parallel directions.

5. A horizontal refrigerated filling mixer according to claim 4, characterized in that, The connector (18) has a limiting protrusion (20) fixed to its outer wall. A sealing ring (21) is sleeved on the outer periphery of the end of the connector (18). The mounting base (24) has a stepped hole (23). The connector (18) can be sealed and inserted into the stepped hole (23). A sealing gasket (22) is sandwiched between the end of the connector (18) and the step of the stepped hole (23). The connector (18) is locked to the mounting base (24) by a threaded sleeve (19).

6. A horizontal refrigerated filling mixer according to any one of claims 1-5, characterized in that, The cold flow circulation assembly includes a refrigeration cycle machine (11), which can cool the fluid and drive the flow motion. The stirring shaft (3) has a first hole (13) at one end that communicates with the liquid inlet channel (6) and a second hole (14) at the other end that communicates with the liquid outlet channel (5). The first hole (13) is connected to the discharge end of the refrigeration cycle machine (11), and the second hole (14) is connected to the inlet end of the refrigeration cycle machine (11).

7. A horizontal refrigerated filling mixer according to claim 6, characterized in that, The cold flow circulation assembly includes two rotary joints (8) that are rotatably connected to the stirring shaft (3). One rotary joint (8) is connected to the first hole (13) and to the discharge end of the refrigeration cycle machine (11). The other rotary joint (8) is connected to the second hole (14) and to the inlet end of the refrigeration cycle machine (11).

8. A horizontal refrigerated filling mixer according to claim 7, characterized in that, The refrigeration jacket (10) includes a cold flow circulation pipe (25), and the cold flow circulation assembly includes two three-way valves (9). One of the three-way valves (9) can connect the first hole (13), the inlet end of the cold flow circulation pipe (25), and the outlet end of the refrigeration cycle machine (11). The other three-way valve (9) can connect the second hole (14), the outlet end of the cold flow circulation pipe (25), and the inlet end of the refrigeration cycle machine (11).

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