冷饮机转轴及感温装置密封结构

Abstract

本实用新型公开了一种冷饮机转轴及感温装置密封结构，属于冷饮机的转轴密封技术，现有密封组件的可靠性及密封性难以保证、感温装置感知的温度易受蒸发器壳体温度的干扰，本实用新型在蒸发器壳体端壁的通孔处装配包括第一压块、第二压块和油封的密封结构，第一压块装配于通孔，第二压块装配于第一压块，油封被约束在第一压块与第二压块之间，第一压块、第二压块和油封具有对应的轴孔，转轴穿在轴孔内并与油封密封配合，装配可靠，能够保持良好的装配可靠性及密封性。本实用新型还通过在第一压块设置管套，管套位于安装孔，感温装置密封装配于管套，感温装置与蒸发器壳体被管套隔离用以避免感温装置感知蒸发器壳体的温度。

Claims

1. A sealing structure for a rotating shaft and temperature sensing device of a cold drink machine, comprising an evaporator housing (200), a rotating shaft (300), and a temperature sensing device (600), wherein the evaporator housing has an end wall (201), the end wall having a through hole (202) located at the center and a mounting hole (206) offset from the center, characterized in that: A sealing structure (500) comprising a first pressure block (510), a second pressure block (520), and an oil seal (530) is assembled at the through hole. The first pressure block (510) is assembled in the through hole (202), the second pressure block (520) is assembled in the first pressure block (510), and the oil seal (530) is constrained between the first pressure block (510) and the second pressure block (520). The first pressure block (510), the second pressure block (520), and the oil seal (530) have corresponding shaft holes. The rotating shaft (300) passes through the shaft hole and is sealed with the oil seal (530). The first pressure block (510) has a sleeve (517) off-center, the sleeve (517) being located in the mounting hole (206), and a temperature sensing device (600) is sealed and fitted in the sleeve (517). The temperature sensing device (600) is isolated from the evaporator housing (200) by the sleeve (517) to prevent the temperature sensing device from sensing the temperature of the evaporator housing.

2. The seal for a cold beverage machine pivot and temperature sensing device of claim 1, wherein: The through hole (202) has a notch (203), and the first pressure block (510) has a cylindrical part (511) and an end cap (512). The cylindrical part (511) has a radial flange (513) corresponding to the notch (203). A gap (514) is maintained between the radial flange (513) and the end cap (512). The cylindrical part (511) passes through the through hole (202). The radial flange (513) and the end cap (512) are located on opposite sides of the end wall (201), and the radial flange (513) is misaligned with the notch (203). The end wall (201) is stuck in the gap (514).

3. The seal for a cold beverage machine pivot and temperature sensing device of claim 2, wherein: A sealing ring (540) is placed between the end cap (512) and the end wall (201) on the radially outer side of the mounting hole (206), and a sealing sleeve (550) is placed between the end cap (512) and the rotating shaft (300).

4. The sealing structure of the rotating shaft and temperature sensing device of the cold drink machine according to claim 3, characterized in that: The end cap (512) extends towards the center to form a hole edge (515), and the sealing sleeve (550) is provided with an annular groove, which is engaged with the hole edge (515).

5. The seal for a cold beverage machine pivot and temperature sensing device of claim 2, wherein: The cylindrical part (511) has a groove (516), and the second pressure block (520) has a radial protrusion (521). The second pressure block (520) is located inside the cylindrical part (511), and the radial protrusion (521) is fitted into the groove (516) and axially presses the oil seal (530).

6. The seal for a cold beverage machine pivot and temperature sensing device of claim 5, wherein: The slot includes a connected axial section and a circumferential section. The radial protrusion is placed in the axial section and, after rotation, engages with the circumferential section.

7. The seal for a cold beverage machine pivot and temperature sensing device of claim 5, wherein: A sealing sleeve (550) is placed between the end cap (512) and the rotating shaft (300), and the oil seal (530) is pressed against the sealing sleeve (550) by the second pressure block (520).

8. The seal for a cold beverage machine pivot and temperature sensing device of claim 2, wherein: The mounting hole (206) is an arc-shaped hole so that the sleeve (517) can rotate within the mounting hole (206) when the first pressure block (510) is inserted into the through hole.

9. The cold beverage machine pivot and thermowell seal of claim 1, wherein: Both ends of the sleeve (517) maintain an axial distance from the end wall (201).

10. The cold beverage machine pivot and thermistor seal of claim 1, wherein the evaporator is a capillary tube. 10 A sleeve (205) is provided inside the shell (200). One end of the sleeve (205) abuts against the sealing structure (500). The rotating shaft (300) is located inside the sleeve (205). The evaporator shell (200) and the radial outer side of the sleeve (205) are filled with foam material (204). The foam material (204) is combined with the parts that contact the sleeve and the sealing structure.

11. The cold beverage machine pivot and thermowell seal of claim 10, wherein: The second pressure block (520) is assembled on the radial inner side of the first pressure block (510), and an annular gap (560) is maintained between the second pressure block and the first pressure block. The sleeve (205) is inserted into the annular gap (560).

12. The seal for a cold beverage machine pivot and temperature sensing device of any one of claims 1-11, wherein: The first pressure block (510) is assembled into the through hole (202) from the outside of the end wall (201), and the second pressure block (520) is assembled into the first pressure block (510) from the inside of the end wall (201).

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