Sealing structure with seal assembly convenient to replace and snow melting machine

Abstract

The utility model discloses a kind of sealing structure and snow melting machine of sealing assembly convenient to replace, belong to the sealing and maintenance technology of beverage making equipment, the sealing structure of the shaft of existing snow melting machine is inconvenient to disassemble and replace, the utility model is constituted sealing structure by inner wall, outer wall, shaft and sealing assembly, shaft, outer wall and inner wall define the placement space of outward open, sealing assembly is sleeved on shaft and located in placement space, sealing assembly includes rigid retainer and flexible cover combined together, rigid retainer is fastened to outer wall by axial fastener and is axially pressed to hold in inner wall with sealing assembly, flexible cover covers the outer end surface of rigid retainer, shields the fastener, and flexible cover can be opened to expose fastener.The sealing structure, when aging, wear and tear and other factors cause sealing assembly to be poorly sealed, open flexible cover, expose fastener, dismount fastener, and then remove sealing assembly along the axial, reassemble new sealing assembly, replace conveniently.

Description

Technical Field

[0001] This utility model relates to sealing and maintenance technology for beverage making equipment, specifically to a sealing structure and a snow melting machine that facilitates the replacement of sealing components. Background Technology

[0002] Snow melting machines are used to make slush, cold drinks, etc. They consist of a cylinder containing liquid raw materials, and an evaporator inside the cylinder to cool the liquid. During operation, a motor drives a reamer via a shaft to rotate, which stirs the liquid and scrapes off any ice that has condensed on the cylindrical surface of the evaporator. Because the shaft passes through the evaporator and is located in a liquid environment, it needs to be sealed to prevent liquid from entering the evaporator from the joint between the shaft and the evaporator. Existing sealing structures are not convenient for disassembly and replacement. Utility Model Content

[0003] This invention addresses the drawback of existing snow melting machines where the shaft sealing structure is inconvenient to disassemble and replace. It provides a sealing structure and snow melting machine that facilitates the replacement of sealing components as needed.

[0004] To achieve the above objectives, the present invention provides a sealing structure for easy replacement of sealing components, comprising an inner wall, an outer wall, a shaft, and a sealing component. The structure is characterized by: the shaft, the outer wall, and the inner wall defining an outwardly open mounting space; the sealing component being fitted onto the shaft and located within the mounting space; the sealing component comprising a rigid retainer and a flexible cover joined together; the rigid retainer being axially fastened to the outer wall by fasteners, axially pressing the sealing component against the inner wall; and the flexible cover covering the outer end face of the rigid retainer, shielding the fasteners, and being able to be lifted to expose the fasteners.

[0005] This sealing structure consists of a flexible cover that covers the outer end face of the rigid retainer and shields the fasteners. The flexible cover isolates the sealing assembly from the working environment, ensuring that the sealing assembly remains sealed and is not affected by adverse effects from the working ring, thus maintaining a long-term seal. When the sealing assembly fails to seal due to aging, wear, or other factors after prolonged use, the flexible cover can be lifted to expose the fasteners, which can then be removed. The sealing assembly can then be removed axially and a new sealing assembly can be installed, making replacement convenient.

[0006] Preferably, the rigid retainer has an inner ring edge extending radially inward, and the flexible cover has an axially extending bushing portion with an end wall formed at one end of the bushing portion. An outer ring groove facing radially outward is formed between the end wall and the flexible cover, and the inner ring edge is embedded in the outer ring groove. This structure manufactures the rigid retainer and the flexible cover separately and then assembles them together, which facilitates the selection of manufacturing materials for the rigid retainer and the flexible cover as needed, ensuring that they maintain good performance.

[0007] Preferably, the sealing assembly includes an oil seal, and a rigid retainer axially presses the oil seal against the inner wall via an end wall, thereby preventing leakage along the inner wall surface.

[0008] Furthermore, the rigid retainer has an inner annular wall, and the radial outer wall of the oil seal seals against the inner annular wall of the rigid retainer, while the radial inner wall of the oil seal seals against the shaft. This prevents leakage along the inner annular wall of the rigid retainer and the surface of the shaft. The presence of the oil seal prevents both axial and radial leakage, achieving a three-dimensional seal.

[0009] Preferably, the sealing assembly includes an annular sealing ring, which is held against the inner wall by a rigid retainer. Regardless of whether an oil seal is present, the annular sealing ring ensures a sealing effect at the assembly point of the rigid retainer. In particular, the annular sealing ring is fitted onto the oil seal, allowing the annular sealing ring and the oil seal to complement each other for a better seal.

[0010] This utility model discloses a snow melting machine, which has a cylindrical evaporator. The evaporator is characterized by a sealing structure, wherein the outer wall is the outer end face of the evaporator, the inner wall is the inner end face located inside the outer wall, and a shaft passes through the evaporator and extends out of the outer wall. The extended end of the shaft is connected to a reamer, which mates with the outer cylindrical surface of the evaporator. This achieves a seal at the assembly point of the evaporator and shaft, and facilitates the replacement of the sealing assembly as needed.

[0011] This invention comprises an inner wall, an outer wall, a shaft, and a sealing assembly to form a sealing structure. The shaft, outer wall, and inner wall define an outwardly open placement space. The sealing assembly is fitted onto the shaft and located within the placement space. The sealing assembly includes a rigid retainer and a flexible cover joined together. The rigid retainer is axially fastened to the outer wall by fasteners, pressing the sealing assembly axially against the inner wall. The flexible cover covers the outer end face of the rigid retainer, concealing the fasteners, and can be lifted to expose the fasteners. This sealing structure isolates the sealing assembly from the working environment through the flexible cover, ensuring the sealing assembly remains sealed and unaffected by adverse effects from the working ring, thus maintaining a long-term seal. When the sealing assembly fails to seal due to aging, wear, or other factors after prolonged use, the flexible cover can be lifted to expose the fasteners, which can then be removed. The sealing assembly can then be removed axially and a new sealing assembly installed, making replacement convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the snow melting machine of this utility model; Figure 2 for Figure 1 The diagram shows the snow melting machine with the material cylinder and reamer removed. Figure 3 for Figure 2 A schematic diagram showing a sealing assembly between the end of the evaporator and the shaft; Figure 4 for Figure 3 A schematic diagram showing the structure with the sealing assembly removed; Figure 5 A cross-sectional schematic diagram of the sealing assembly configured between the end of the evaporator and the shaft according to this utility model; Figure 6 for Figure 5 Enlarged view of part A in the image; Figure 7 This is a cross-sectional schematic diagram of the sealing component of this utility model; Figure 8 This is an exploded view of the sealing component of this utility model; Explanation of the labels in the diagram: 100-inch body; 200 evaporator, 210 inner wall, 220 outer wall; 300 barrel; 400 reamer; 500 shafts; 600 Sealing assembly, 610 Rigid retainer, 611 Inner ring edge, 612 Inner ring wall, 620 Flexible cover, 621 Bushing portion, 622 End wall, 623 Outer ring groove, 630 Fastener, 640 Oil seal, 641 Radial outer wall, 642 Radial inner wall, 650 Annular seal ring. 700 resettlement spaces. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion, such as a method or product that includes a series of technical features, not limited to those technical features explicitly listed, but also including other technical features that may be included in the method or product but not explicitly listed.

[0015] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0016] Figure 6 , Figure 7 , Figure 8A sealing structure for easy replacement of the sealing assembly is shown, comprising an inner wall 210, an outer wall 220, a shaft 500, and a sealing assembly 600. The shaft 500, outer wall 220, and inner wall 210 define an outwardly open mounting space 700. The sealing assembly 600 is fitted onto the shaft 500 and located in the mounting space 700. The sealing assembly 600 includes a rigid retainer 610 and a flexible cover 620 joined together. The rigid retainer 610 is axially fastened to the outer wall 220 by a fastener 630, such as a screw, which axially presses the sealing assembly against the inner wall 210. The flexible cover 620 covers the outer end face of the rigid retainer 610, conceals the fastener 630, and can be lifted to expose the fastener 630.

[0017] This sealing structure isolates the sealing component from the working environment with a flexible cover, ensuring the sealing component remains sealed and unaffected by adverse effects from the working ring, thus maintaining a long-term seal. When the sealing component fails to seal due to aging, wear, or other factors, the flexible cover can be lifted to expose the fasteners, which can then be removed. The sealing component can then be removed axially and a new sealing component installed, making replacement convenient.

[0018] The above structure embodies the basic concept of this utility model, enabling the realization of its technical solution. To further improve this technical solution, based on the above structure, the following preferred technical means can be selected to obtain better embodiments.

[0019] like Figure 8 As shown, the rigid retainer 610 has an inner ring edge 611 extending radially inward, and the flexible cover 620 has a bushing portion 621 extending axially and an end wall 622 formed at one end of the bushing portion. An outer ring groove 623 facing radially outward is formed between the end wall 622 and the flexible cover 620. Figure 6 , Figure 7 As shown, the inner ring edge 611 is embedded in the outer ring groove 623. This structure manufactures the rigid retainer and the flexible cover separately and then assembles them together, allowing for the selection of materials for the rigid retainer and the flexible cover as needed, ensuring they maintain good performance. For example, the rigid retainer can be made of stainless steel or engineering plastic, while the flexible cover can be made of silicone.

[0020] like Figure 6 , Figure 7 , Figure 8As shown, the sealing assembly 600 includes an oil seal 640, and a rigid retainer 610 axially presses the oil seal 640 against the inner wall 210 via an end wall 622. This prevents leakage along the surface of the inner wall 210. Furthermore, the rigid retainer 610 has an inner annular wall 612, the radial outer wall 641 of the oil seal sealingly engages with the inner annular wall 612 of the rigid retainer, and the radial inner wall 642 of the oil seal sealingly engages with the shaft 500. This prevents leakage along the inner annular wall of the rigid retainer and the surface of the shaft. The presence of the oil seal prevents both axial and radial leakage, achieving a three-dimensional seal.

[0021] like Figure 6 , Figure 7 , Figure 8 As shown, the sealing assembly 600 includes an annular sealing ring 650, which is held against the inner wall 220 by the end of the rigid retainer 610. Specifically, the annular sealing ring 650 is fitted onto the oil seal 640, allowing the annular sealing ring and the oil seal to complement each other for a better seal. In other embodiments, even without the oil seal, the annular sealing ring can ensure a sealing effect at the assembly point of the rigid retainer.

[0022] Figure 1 , Figure 2 A snow melting machine is shown, which has a cylindrical evaporator 200 that is horizontally fixed to the machine body 100. A feed cylinder 300 is also mounted on the machine body 100, and the evaporator 200 is suspended above the feed cylinder 300.

[0023] like Figure 3 , Figure 4 , Figure 5 As shown, the evaporator 200 is equipped with Figure 6 , Figure 7 , Figure 8 The sealing structure is shown. The outer wall 220 is the outer end face of the evaporator, and the inner wall 210 is the inner end face located inside the outer wall. The shaft 500 passes through the evaporator 200 and extends beyond the outer end face. The extended end of the shaft 500 is connected to a reamer 400, which mates with the outer cylindrical surface of the evaporator 200. Liquid raw materials are stored in the feed cylinder 300. During operation, the evaporator 200 cools the raw materials. The reamer 400, driven by the shaft 500, rotates to stir the raw materials and scrape away ice condensed on the cylindrical surface of the evaporator. If the sealing components, such as the oil seal 640 and the annular seal ring 650, experience poor sealing due to aging or wear, the sealing components must be replaced to ensure a proper seal. When replacing the sealing components, first... Figure 2 The process involves removing the material cylinder 300 and the reamer 400, then lifting the flexible cover 620 to expose the fastener 630. The fastener 630 is then removed, and the sealing assembly 600 is removed axially. Finally, a new sealing assembly is installed, making replacement convenient. This method achieves a seal at the assembly point between the evaporator and shaft of the snow melting machine and facilitates the replacement of the sealing assembly as needed.

Claims

1. A sealing structure for easy replacement of the sealing assembly, comprising an inner wall (210), an outer wall (220), a shaft (500), and a sealing assembly (600), characterized in that: A shaft (500), an outer wall (220), and an inner wall (210) define an outwardly open mounting space (700). A sealing assembly (600) is fitted onto the shaft (500) and located in the mounting space (700). The sealing assembly (600) includes a rigid retainer (610) and a flexible cover (620) that are joined together. The rigid retainer (610) is fastened to the outer wall (220) by an axial fastener (630) to axially press the sealing assembly against the inner wall (210). The flexible cover (620) covers the outer end face of the rigid retainer (610), shields the fastener (630), and can be lifted to expose the fastener (630).

2. The sealing structure for easy replacement of sealing components according to claim 1, characterized in that: The rigid retainer (610) has an inner ring edge (611) extending radially inward, and the flexible cover (620) has a bushing portion (621) extending axially and an end wall (622) formed at one end of the bushing portion. An outer ring groove (623) is formed between the end wall (622) and the flexible cover (620) facing radially outward, and the inner ring edge (611) is embedded in the outer ring groove (623).

3. The sealing structure for easy replacement of sealing components according to claim 2, characterized in that: The sealing assembly (600) includes an oil seal (640) and a rigid retainer (610) which axially presses the oil seal (640) against the inner wall (210) by means of an end wall (622).

4. The sealing structure for easy replacement of sealing components according to claim 3, characterized in that: The rigid retainer (610) has an inner ring wall (612), the radial outer wall (641) of the oil seal is sealed to the inner ring wall (612) of the rigid retainer, and the radial inner wall (642) of the oil seal is sealed to the shaft (500).

5. The sealing structure for easy replacement of the sealing assembly according to claim 3 or 4, characterized in that: The sealing assembly (600) includes an annular sealing ring (650) which is held against the inner wall (210) by a rigid retainer (610).

6. The sealing structure for easy replacement of sealing components according to claim 5, characterized in that: The annular sealing ring (650) is fitted onto the oil seal (640).

7. The sealing structure for easy replacement of sealing components according to claim 1 or 2, characterized in that: The sealing assembly (600) includes an annular seal (650) which is held against the inner wall (210) by a rigid retainer (610).

8. A snow melting machine having a cylindrical evaporator (200), characterized by: The evaporator (200) is equipped with the sealing structure according to any one of claims 1-7, the outer wall (220) is the outer end face of the evaporator, the inner wall (210) is the inner end face located inside the outer wall, the shaft (500) passes through the evaporator (200) and extends out of the outer wall (220), the extended end of the shaft (500) is connected to a reamer (400), and the reamer (400) is engaged with the outer cylindrical surface of the evaporator (200).

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