Rotary evaporator structure for snowflake machine

Abstract

The utility model discloses a rotary evaporator structure for a snowflake machine, which belongs to the technical field of snowflake machines and comprises a rack and an evaporator, a first rotating shaft and a second rotating shaft are respectively arranged at two ends of the evaporator, the evaporator rotates on the rack through the first rotating shaft and the second rotating shaft, and a connecting hole is arranged on the first rotating shaft or the second rotating shaft. A connecting pipe is connected to the connecting hole in a sealed mode, extends into the evaporator and is connected with an air return pipe and an input pipe, one end of the connecting pipe is matched with one end of the air return pipe and one end of the input pipe in a sealed mode, a refrigerant backflow port is formed in the inner end of the air return pipe and faces one end of the evaporator, and a refrigerant outlet is formed in the inner end of the input pipe and faces one side of the evaporator. According to the evaporator, sealing of the connecting hole, the connecting pipe, the air return pipe and the input pipe can be achieved only by arranging the sealing piece between the connecting hole and the connecting pipe, so that the requirements for sealing machining and assembling processes are lowered, the overall structure of the evaporator is simplified, the production cost is reduced, and in addition, the evaporator with the simplified structure is longer in service life and better in practicability.

Description

Technical Field

[0001] This utility model relates to the field of snow machine technology, specifically a rotary evaporator structure for a snow machine. Background Technology

[0002] Chinese utility model patent CN202420749279.2 discloses an improved rotary evaporator for a shaved ice machine, comprising a cylinder with a drive shaft on one side; a right end cover welded to the side of the cylinder opposite to the drive shaft; a connecting hole on the right end cover; a sealing seat passing through the connecting hole and welded to the right end cover; a central tube inserted into the sealing seat; and a first sealing ring abutting between them. When the cylinder is filled with pressurized refrigerant, the pressurized refrigerant causes the central tube to press tightly against the sealing seat and the first sealing ring. Because the rotary evaporator requires an inlet chamber between the inner wall of the central tube and the outer wall of the return gas pipe, the front and rear ends of the central tube and the return gas pipe need to be sealed. Additionally, the initial ends of the central tube and the return gas pipe need to be sealed together when inserted into the cylinder; otherwise, refrigerant leakage will occur. However, the sealing and assembly processes between multiple components are demanding, the structure is complex, and the production cost is high. Moreover, the sealing performance gradually fails over time, resulting in a short service life. Therefore, further improvement is necessary. Utility Model Content

[0003] The present invention aims to provide a rotary evaporator structure for a snow machine to overcome the shortcomings of the prior art.

[0004] A rotary evaporator structure for a snow machine designed for this purpose includes a frame and an evaporator, characterized in that: the evaporator is provided with a first rotating shaft and a second rotating shaft at both ends, and is rotatably mounted on the frame via the first rotating shaft and the second rotating shaft; the first rotating shaft or the second rotating shaft is provided with a connecting hole, and a connecting pipe is sealed to the connecting hole; the connecting pipe extends into the evaporator and is connected to a return gas pipe and an input pipe; one end of the connecting pipe is sealed to one end of the return gas pipe and one end of the input pipe, respectively; the other end of the return gas pipe is provided with a refrigerant return port and extends into the evaporator; the other end of the input pipe is provided with a refrigerant outlet and extends into the evaporator and faces one side of the evaporator.

[0005] The connecting pipe has an opening groove on the end side wall inside the evaporator, the inner end of the input pipe is bent on the opening groove, and the refrigerant outlet faces the evaporator side through the opening groove.

[0006] The outer ends of the return air pipe and the input pipe pass through the outer end of the connecting pipe, and the inner end of the return air pipe passes through the inner end of the connecting pipe.

[0007] The first rotating shaft is provided with a connection hole communicating with the interior of the evaporator. A connection hole positioning step is provided inside the connection hole, and a connection pipe positioning step is provided around the connection pipe. A connection seal is provided between the connection hole positioning step and the connection pipe positioning step, and the two are sealed together by the connection seal.

[0008] The connecting pipe is also provided with an annular edge, which engages with the connecting hole.

[0009] A connecting bearing is positioned on the connecting pipe, and the connecting bearing is located outside the positioning step of the connecting pipe. The connecting pipe is rotatably connected to the connecting hole through the connecting bearing.

[0010] The frame is provided with a first receiving part and a second receiving part. The first receiving part and the second receiving part are respectively fixed with a first fixing frame and a second fixing frame by fasteners or buckles. The first rotating shaft is rotatably supported between the first receiving part and the first fixing frame, and the second rotating shaft is rotatably supported between the second receiving part and the second fixing frame.

[0011] A first bearing is positioned on the first rotating shaft and is rotatably supported between the first receiving part and the first fixed frame via the first bearing. A second bearing is positioned on the second rotating shaft and is rotatably supported between the second receiving part and the second fixed frame via the second bearing.

[0012] The first rotating shaft is also provided with a first sealing element, which is in sealing cooperation with the first receiving part, the first fixing frame, and the first bearing. The second rotating shaft is also provided with a second sealing element, which is in sealing cooperation with the second receiving part, the second fixing frame, and the second bearing.

[0013] The first or second rotating shaft has a threaded portion on its periphery, and a threaded fastener is connected through the threaded portion.

[0014] This utility model, through the improvement of the above-mentioned structure, has a connecting pipe sealed and connected to the connecting hole of the first or second rotating shaft, and one end of the connecting pipe is respectively sealed and fitted with one end of the return gas pipe and one end of the input pipe. This eliminates the drawbacks of the prior art where the liquid inlet chamber and the first ends of the central shaft pipe and the return gas pipe are inserted into the cylinder and sealed to each other. This evaporator only needs to set a sealing element between the connecting hole and the connecting pipe to achieve the sealing problem of the connecting hole, the connecting pipe, the return gas pipe, and the input pipe, thereby reducing the sealing processing and assembly process requirements, simplifying the overall structure of the evaporator, reducing production costs, and the evaporator with a simplified structure has a longer service life and better practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of an embodiment of the present invention.

[0018] Figure 4 This is an exploded structural diagram of an embodiment of the present invention.

[0019] Figure 5 This is an exploded structural diagram from another perspective of an embodiment of the present invention. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See Figures 1-5 A rotary evaporator structure for a snow machine includes a frame 1 and an evaporator 2. The evaporator 2 is characterized by having a first rotating shaft 3 and a second rotating shaft 4 at both ends, rotatably mounted on the frame 1 via the first rotating shaft 3 and the second rotating shaft 4. A connecting hole 5 is provided on either the first rotating shaft 3 or the second rotating shaft 4, and a connecting pipe 6 is sealed to the connecting hole 5. The connecting pipe 6 extends into the evaporator 2 and is connected to a return gas pipe 7 and an input pipe 8. One end of the connecting pipe 6 is sealed to one end of the return gas pipe 7 and one end of the input pipe 8, respectively. The other end of the return gas pipe 7 is provided with a refrigerant return port 9 and extends into the evaporator 2. The other end of the input pipe 8 is provided with a refrigerant outlet 10 and extends into the evaporator 2, facing one side of the evaporator 2.

[0023] In this embodiment, the evaporator 2 is a drum structure. A connecting pipe 6 is sealed to the connecting hole 5 of the first rotating shaft 3 or the second rotating shaft 4. One end of the connecting pipe 6 is respectively sealed to one end of the return gas pipe 7 and one end of the input pipe 8 (the sealing position is located on the outside of the drum structure, that is, outside the inner cavity of the drum structure; the specific position can be determined according to the actual installation position and size of the product). The input pipe 8 extends into the evaporator along the space between the connecting pipe 6 and the return gas pipe 7. Therefore, there must be a gap between them that communicates with the inside of the evaporator. The connecting pipe 6, the return gas pipe 7, and the input pipe 8... One end of the pipes is sealed to prevent the refrigerant inside the evaporator from leaking out through the gaps. At the same time, this embodiment eliminates the drawbacks of the liquid inlet chamber and the insertion and sealing of the first ends of the central tube and return gas pipe into the cylinder in the prior art. This evaporator only needs to set a sealing element between the connecting hole 5 and the connecting pipe 6 to achieve the sealing problem of the connecting hole 5, the connecting pipe 6, the return gas pipe 7, and the input pipe 8, thereby reducing the requirements for sealing processing and assembly, simplifying the overall structure of the evaporator, reducing production costs, and the evaporator with a simplified structure has a longer service life and better practicality.

[0024] The end wall of the connecting pipe 6 located inside the evaporator 2 is provided with an opening groove 11. The inner end of the input pipe 8 is bent on the opening groove 11, and the refrigerant outlet 10 faces the evaporator 2 through the opening groove 11.

[0025] The outer ends of the return pipe 7 and the input pipe 8 pass through the outer end of the connecting pipe 6, respectively, and the inner end of the return pipe 7 passes through the inner end of the connecting pipe 6.

[0026] In this embodiment, during assembly, the return air pipe 7 is inserted through the connecting pipe 6, and the input pipe 8 is inserted into the connecting pipe 6 along the direction of the opening groove 11 and relies on the return air pipe 7. The inner curved section of the input pipe 8 is positioned on the opening groove 11. After assembly, one end of the connecting pipe 6 forms a mutually sealed and relied-on state between one end of the return air pipe 7 and one end of the input pipe 8.

[0027] The first rotating shaft 3 is provided with a connection hole 5 that communicates with the interior of the evaporator 2. A connection hole positioning step 12 is provided inside the connection hole 5. A connection pipe positioning step 13 is provided around the connection pipe 6. A connection seal 14 is provided between the connection hole positioning step 12 and the connection pipe positioning step 13, and the two are sealed together by the connection seal 14.

[0028] In this embodiment, the connecting seal 14 is a sealing ring, which is positioned and sleeved on the connecting pipe 6. One side of the connecting seal 14 acts as a seal on the positioning step 12 of the connecting hole, and the other side acts as a seal on the positioning step 13 of the connecting pipe, thereby achieving a sealing fit between the connecting pipe 6 and the connecting hole 5.

[0029] The connecting pipe 6 is also provided with an annular edge 15, which cooperates with the connecting hole 5. The annular edge 15 is located behind the connecting pipe positioning step 13 and close to the evaporator 2. That is, the connecting pipe positioning step 13 and the annular edge 15 cooperate with each other in the front and rear positions, and both cooperate with the connecting hole 5 in the front and rear positions, so that the connecting pipe 6 and the connecting hole 5 are positioned at least two different positions, thereby ensuring that the connecting pipe 6 and the evaporator 2 are always on the same axis.

[0030] A connecting bearing 16 is positioned on the connecting pipe 6. The connecting bearing 16 is located outside the positioning step 13 of the connecting pipe. The connecting pipe 6 is rotatably connected to the connecting hole 5 through the connecting bearing 16, so that the evaporator 2 can also rotate relative to the connecting pipe 6 when it rotates on the frame 1.

[0031] The frame 1 is provided with a first receiving part 17 and a second receiving part 18. A first fixing frame 19 and a second fixing frame 20 are respectively fixed on the first receiving part 17 and the second receiving part 18 by fasteners or buckles. A first rotating shaft 3 is rotatably supported between the first receiving part 17 and the first fixing frame 19, and a second rotating shaft 4 is rotatably supported between the second receiving part 18 and the second fixing frame 20.

[0032] In this embodiment, the first fixing frame 19 and the second fixing frame 20 are respectively fixed to the first receiving part 17 and the second receiving part 18 by fasteners. The first receiving part 17 and the second receiving part 18 are respectively semi-circular. The first fixing frame 19 and the second fixing frame 20 are respectively provided with semi-circular mating parts. When the first fixing frame 19 and the second fixing frame 20 are assembled, circular receiving positions are formed between the first fixing frame 19 and the first receiving part 17, and between the second fixing frame 20 and the second receiving part 18, so that the first rotating shaft 3 can be rotatably supported between the first receiving part 17 and the first fixing frame 19, and the second rotating shaft 4 can be rotatably supported between the second receiving part 18 and the second fixing frame 20.

[0033] In addition, during assembly, the evaporator 2 can be supported on the first receiving part 17 and the second receiving part 18 respectively by the first rotating shaft 3 and the second rotating shaft 4, and then the first fixing bracket 19 and the second fixing bracket 20 can be fixed on the first receiving part 17 and the second receiving part 18 respectively, thus realizing the assembly of the evaporator 2. The structure is simple and the assembly is convenient.

[0034] A first bearing 21 is positioned on the first rotating shaft 3 and is rotatably supported between the first receiving part 17 and the first fixed frame 19 via the first bearing 21. A second bearing 22 is positioned on the second rotating shaft 4 and is rotatably supported between the second receiving part 18 and the second fixed frame 20 via the second bearing 22. This allows the evaporator 2 to rotate on the frame 1 and also improves the rotational stability of the evaporator 2.

[0035] A first sealing element 23 is also positioned on the first rotating shaft 3, and the first sealing element 23 is sealed to cooperate with the first receiving part 17, the first fixing frame 19, and the first bearing 21. A second sealing element 24 is also positioned on the second rotating shaft 4, and the second sealing element 24 is sealed to cooperate with the second receiving part 18, the second fixing frame 20, and the second bearing 22.

[0036] In this embodiment, the first sealing element 23 and the second sealing element 24 are annular sealing elements, and their cross sections are U-shaped. The first sealing element 23 is U-shaped and is fixed on the first fixed frame 19 and the first receiving part 17. The side of the first sealing element 23 is sealed and fitted with the first bearing 21. The second sealing element 24 is U-shaped and is fixed on the second fixed frame 20 and the second receiving part 18. The side of the second sealing element 24 is sealed and fitted with the second bearing 22, thereby ensuring the rotational sealing fit between the evaporator 2 and the frame 1.

[0037] The first rotating shaft 3 or the second rotating shaft 4 has a threaded part 25 on its periphery, and a threaded fastener 26 is connected through the threaded part 25.

[0038] In this embodiment, the threaded portion 25 is disposed around the first rotating shaft 3, and the threaded fastener 26 is threadedly connected to the threaded portion 25 and fastens on the connecting bearing 16, thereby fixing the connecting bearing 16 and ensuring the stable assembly of the evaporator 2.

[0039] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A rotary evaporator structure for a snow machine, comprising a frame (1) and an evaporator (2), characterized in that: The evaporator (2) is provided with a first rotating shaft (3) and a second rotating shaft (4) at both ends, and is rotatably mounted on the frame (1) via the first rotating shaft (3) and the second rotating shaft (4). A connecting hole (5) is provided on the first rotating shaft (3) or the second rotating shaft (4), and a connecting pipe (6) is sealed and connected to the connecting hole (5). The connecting pipe (6) extends into the evaporator (2) and is connected to a return pipe (7) and an input pipe (8). One end of the connecting pipe (6) is sealed and fitted with one end of the return pipe (7) and one end of the input pipe (8). The other end of the return pipe (7) is provided with a refrigerant return port (9) and extends into the evaporator (2). The other end of the input pipe (8) is provided with a refrigerant outlet (10) and extends into the evaporator (2) and faces the side of the evaporator (2).

2. The rotary evaporator structure for a snow machine according to claim 1, characterized in that: The connecting pipe (6) has an opening groove (11) on the end side wall inside the evaporator (2). The inner end of the input pipe (8) is bent on the opening groove (11). The refrigerant outlet (10) is directed toward the evaporator (2) through the opening groove (11).

3. The rotary evaporator structure for a snow machine according to claim 1, characterized in that: The outer ends of the return pipe (7) and the input pipe (8) pass through the outer end of the connecting pipe (6), and the inner end of the return pipe (7) passes through the inner end of the connecting pipe (6).

4. The rotary evaporator structure for a snow machine according to claim 1, characterized in that: The first rotating shaft (3) is provided with a connection hole (5) that communicates with the interior of the evaporator (2). A connection hole positioning step (12) is provided inside the connection hole (5). A connection pipe positioning step (13) is provided around the connection pipe (6). A connection sealing element (14) is provided between the connection hole positioning step (12) and the connection pipe positioning step (13), and the two are sealed together by the connection sealing element (14).

5. The rotary evaporator structure for a snow machine according to claim 4, characterized in that: The connecting pipe (6) is also provided with an annular edge (15) around its periphery, and the annular edge (15) cooperates with the connecting hole (5).

6. The rotary evaporator structure for a snow machine according to claim 4, characterized in that: A connecting bearing (16) is positioned on the connecting pipe (6). The connecting bearing (16) is located outside the positioning step (13) of the connecting pipe. The connecting pipe (6) is rotatably connected to the connecting hole (5) through the connecting bearing (16).

7. The rotary evaporator structure for a snow machine according to claim 1, characterized in that: The frame (1) is provided with a first receiving part (17) and a second receiving part (18). The first receiving part (17) and the second receiving part (18) are respectively fixed with a first fixing frame (19) and a second fixing frame (20) by fasteners or buckles. The first rotating shaft (3) is rotatably supported between the first receiving part (17) and the first fixing frame (19), and the second rotating shaft (4) is rotatably supported between the second receiving part (18) and the second fixing frame (20).

8. The rotary evaporator structure for a snow machine according to claim 7, characterized in that: The first rotating shaft (3) is provided with a first bearing (21) and is rotatably supported between the first receiving part (17) and the first fixed frame (19) via the first bearing (21). The second rotating shaft (4) is provided with a second bearing (22) and is rotatably supported between the second receiving part (18) and the second fixed frame (20) via the second bearing (22).

9. The rotary evaporator structure for a snow machine according to claim 8, characterized in that: The first rotating shaft (3) is also provided with a first sealing element (23), and the first receiving part (17), the first fixing frame (19), and the first bearing (21) are sealed together through the first sealing element (23). The second rotating shaft (4) is also provided with a second sealing element (24), and the second receiving part (18), the second fixing frame (20), and the second bearing (22) are sealed together through the second sealing element (24).

10. The rotary evaporator structure for a snow machine according to claim 7, characterized in that: The first rotating shaft (3) or the second rotating shaft (4) is provided with a threaded part (25) on its periphery, and a threaded fastener (26) is connected through the threaded part (25).

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