Sealing structure of disinfecting and cleaning machine

Abstract

The utility model discloses a sealing structure of a disinfecting and cleaning machine, which comprises a sleeve-shaped sealing ring (1), a tension spring component is arranged on the outer side of the sealing ring (1), the tension spring component comprises a tension spring (2) and a flat steel belt (3), the steel belt (3) surrounds the sealing ring (1), a plurality of U-shaped gaps (4) formed by blanking are arranged on the steel belt (3), and sheet plates (5) capable of being bent along the thickness direction of the steel belt (3) are formed on the inner sides of the gaps (4). The two ends of the tension spring (2) are connected with the two sheet plates (5) of the steel belt (3) respectively, and the two sheet plates (5) connected with the tension spring (2) are close to the two ends of the steel belt (3) respectively. Hanging holes (6) formed by punching are formed in the sheet plates (5), hooks (7) are arranged at the ends of the tension springs (2), and the hooks (7) penetrate through the corresponding hanging holes (6) to enable the tension springs (2) to be connected with the corresponding sheet plates (5). The sealing device has the advantages of being long in service life, good in universality and good in sealing effect.

Description

Technical Field

[0001] The utility model belongs to the field of disinfection and cleaning machines, and in particular relates to a sealing structure of a disinfection and cleaning machine. Background Art

[0002] The structure of the disinfection and cleaning machine is similar to that of a household drum washing machine, including a shell with an opening on the front side, a door body that can be rotated horizontally and opened at the opening of the shell, a drum that is driven to rotate by a motor is arranged in the shell, a sleeve-shaped sealing ring is arranged between the opening of the drum and the opening of the shell, the outer end of the sealing ring is fixed to the shell, the inner end of the sealing ring is rotatably connected to the drum, the sealing ring is sleeved on the opening flange of the drum, and when the drum rotates, the sealing ring remains stationary, while preventing liquid from seeping out from between the drum and the shell. In order to improve the sealing effect, an annular tension spring assembly is arranged on the outside of the sealing ring, and the tension spring assembly includes an iron wire with pull rings bent at both ends, a tension spring is arranged between the two ends of the iron wire, and the two ends of the tension spring are respectively connected to the pull rings at both ends of the iron wire, and the two ends of the iron wire are tightened by the pre-tightening force of the tension spring, so that the iron wire presses the sealing ring. The existing sealing structure includes a sealing ring and a tension spring assembly.

[0003] During use, it was found that due to the thin wire, a narrow pressure zone with an opening was formed between the sealing ring and the drum, and a large pressure was formed in the pressure zone, which caused the sealing ring to be more prone to aging, deformation and wear, and a shorter service life. In addition, for disinfection and cleaning machines of different sizes, the opening diameter of the drum is different, the diameter of the sealing ring used is different, and the corresponding wire length required is different, so a separate tension spring assembly is required. Disinfection and cleaning machines of various specifications need to be equipped with tension spring assemblies of various specifications. The tension spring assembly cannot be universal, which brings troubles to production and management.

[0004] In summary, the existing sealing structure has the defects of short service life and poor versatility. Utility Model Content

[0005] The purpose of the utility model is to provide a sealing structure for a disinfection and cleaning machine. The utility model has the advantages of long service life, good versatility and good sealing effect.

[0006] The technical solution of the utility model: a sealing structure of a disinfection and cleaning machine, comprising a sleeve-shaped sealing ring, a tension spring assembly being arranged on the outer side of the sealing ring, the tension spring assembly comprising a tension spring and a flat steel belt, the steel belt surrounding the sealing ring, a plurality of U-shaped slits formed by punching being arranged on the steel belt, a sheet being formed on the inner side of the slit which can be bent along the thickness direction of the steel belt, the two ends of the tension spring being respectively connected to two of the sheets of the steel belt, and the two sheets connected to the tension spring being respectively close to the two ends of the steel belt.

[0007] In the aforementioned sealing structure of the disinfection and cleaning machine, the sheet is provided with a hanging hole formed by punching, and the end of the tension spring is provided with a hook, which passes through the corresponding hanging hole to establish a connection between the tension spring and the corresponding sheet.

[0008] In the aforementioned sealing structure of the disinfection and cleaning machine, the wrap angle of the steel belt exceeds 360°, so that the two ends of the steel belt overlap.

[0009] In the aforementioned sealing structure of the disinfection and cleaning machine, the thickness of the steel belt is 0.6-1 mm, the width of the steel belt is 8-15 mm, and an anti-rust layer is provided on the outer peripheral surface of the steel belt.

[0010] In the aforementioned sealing structure of the disinfection and cleaning machine, the thickness of the steel belt is 0.8 mm and the width of the steel belt is 10 mm.

[0011] In the aforementioned sealing structure of the disinfection and cleaning machine, a plurality of annular convex ridges are provided on the inner side of the sealing ring.

[0012] Compared with the prior art, the present invention makes the following improvements to the sealing ring and the tension spring assembly on the basis of the existing sealing structure:

[0013] For the tension spring assembly, a flat steel strip is used to replace the iron wire. The steel strip can be obtained by continuous punching with a continuous die. Although the production cost is higher than that of the iron wire, the difference is not large, and the contact area between the tension spring assembly and the sealing ring can be greatly increased. After the steel strip presses the sealing ring, the pressure between the sealing ring and the roller is small, and the sealing ring is not easy to age, deform and wear, and has a long service life. By punching out multiple cracks on the steel strip, multiple bendable plates are formed on the steel strip. After the steel strip is used in disinfection and cleaning machines of different sizes, the tension spring is connected to different plates, and the steel strip can press the sealing rings of different specifications. The tension spring assembly has good versatility, which reduces the number of specifications of the tension spring assembly equipped in the factory, and is easy to produce and manage. Since the tension spring can be connected to the steel strip on different plates, the connection point between the tension spring and the steel strip is variable, and the tension spring can surround the sealing ring more than 360°, and the sealing effect is better.

[0014] For the sealing ring, on the basis of using a steel belt to compress the sealing ring in the tension spring assembly, multiple annular ridges are arranged on the inner side of the sealing ring to form multiple interceptions for seeping water, further improving the sealing effect of the sealing structure.

[0015] In summary, the utility model has the advantages of long service life, good versatility and good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of Example 1.

[0017] Figure 2 yes Figure 1Enlarged view at A.

[0018] Figure 3 This is a schematic diagram of the steel strip when it is flattened.

[0019] Figure 4 It is a schematic cross-sectional view of the sealing ring of Example 2.

[0020] The markings in the accompanying drawings are: 1-sealing ring, 2-tension spring, 3-steel belt, 4-crack, 5-plate, 6-hanging hole, 7-hook, 8-convex ridge. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment 1. A sealing structure of a disinfection cleaning machine, such as Figures 1 to 3 As shown, it includes a sleeve-shaped sealing ring 1, and a tension spring assembly is provided on the outer side of the sealing ring 1, and the characteristics are as follows:

[0023] The tension spring assembly includes a tension spring 2 and a flat steel strip 3. The steel strip 3 surrounds the sealing ring 1. The steel strip 3 is provided with a plurality of U-shaped slits 4 formed by punching. The inner side of the slit 4 forms a plate 5 that can be bent along the thickness direction of the steel strip 3. The two ends of the tension spring 2 are respectively connected to two of the plates 5 of the steel strip 3. The two plates 5 connecting the tension spring 2 are respectively close to the two ends of the steel strip 3.

[0024] The sheet plate 5 is provided with a hanging hole 6 formed by punching, and the end of the tension spring 2 is provided with a hook 7. The hook 7 passes through the corresponding hanging hole 6 to establish a connection between the tension spring 2 and the corresponding sheet plate 5.

[0025] The wrap angle of the steel strip 3 exceeds 360°, so that the two ends of the steel strip 3 overlap.

[0026] The thickness of the steel strip 3 is 0.8 mm, the width of the steel strip 3 is 10 mm, and an anti-rust layer formed by zinc plating, nickel plating or spray painting is provided on the outer peripheral surface of the steel strip 3.

[0027] Assembly method: According to the existing method, one end of the sealing ring is put on the opening flange of the drum, and the steel belt 4 is wrapped around the sealing ring 1. The length of the steel belt 4 is greater than the outer diameter circumference of the sealing ring. After the steel belt 4 wraps around the sealing ring 1, the two ends of the steel belt 3 overlap. The worker bends the two plates 5 near the two ends of the steel belt 3 outward as the two connection points between the steel belt 3 and the tension spring 2. The distance between the two connection points should be greater than the length of the tension spring 2. The two hooks 7 on the tension spring 2 are respectively passed through the hanging holes 6 on the bent plate 5. The steel belt 3 is tightened to form a ring-shaped, wide pressure belt between the sealing ring 1 and the drum. The pressure at the pressure belt is small, but the sealing area is increased, and the sealing effect will not deteriorate. According to different sealing pressure requirements, the two ends of the tension spring 2 can be connected to different plates 5 of the steel belt 4 to change the preload of the tension spring 2.

[0028] Embodiment 2: Based on embodiment 1, the inner side of the sealing ring 1 is provided with multiple annular ridges, the sealing ring 1 is connected to the roller via the multiple annular ridges, and the steel belt 3 elastically presses the multiple ridges onto the opening flange of the roller, so that the sealing effect is better.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Claims

1. A sealing structure for a disinfection and cleaning machine, comprising a sleeve-shaped sealing ring (1), wherein a tension spring assembly is arranged on the outer side of the sealing ring (1), and wherein: The tension spring assembly comprises a tension spring (2) and a flat steel strip (3), wherein the steel strip (3) surrounds a sealing ring (1), and the steel strip (3) is provided with a plurality of U-shaped slits (4) formed by punching, wherein the inner side of the slits (4) forms a plate (5) that can be bent along the thickness direction of the steel strip (3), and the two ends of the tension spring (2) are respectively connected to two of the plates (5) of the steel strip (3), and the two plates (5) connecting the tension spring (2) are respectively close to the two ends of the steel strip (3).

2. The sealing structure of the disinfection and cleaning machine according to claim 1, characterized in that: The sheet (5) is provided with a hanging hole (6) formed by punching, and the end of the tension spring (2) is provided with a hook (7), and the hook (7) passes through the corresponding hanging hole (6) to establish a connection between the tension spring (2) and the corresponding sheet (5).

3. The sealing structure of the disinfection and cleaning machine according to claim 1, characterized in that: The wrap angle of the steel strip (3) exceeds 360°, so that the two ends of the steel strip (3) overlap.

4. The sealing structure of the disinfection and cleaning machine according to claim 1, characterized in that: The thickness of the steel strip (3) is 0.6-1 mm, the width of the steel strip (3) is 8-15 mm, and an anti-rust layer is provided on the outer peripheral surface of the steel strip (3).

5. The sealing structure of the disinfection and cleaning machine according to claim 4, characterized in that: The thickness of the steel strip (3) is 0.8 mm, and the width of the steel strip (3) is 10 mm.

6. The sealing structure of the disinfection and cleaning machine according to claim 4, characterized in that: The inner side of the sealing ring (1) is provided with a plurality of annular ridges (8).

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