An inflatable seal and filter washing machine

Abstract

The utility model discloses an airtightness seal and filter washing machine, airtightness seal includes first end portion (41) and second end portion (45) for being used for connecting with mounting seat (5) and is used for the contact seal of the abutment portion (43) with the sealed part, be equipped with the bending connecting portion (42) between first end portion (41) with abutment portion (43), first end portion (41), second end portion (45), bending connecting portion (42), abutment portion (43) are used to form the closed cavity with mounting seat (5). Through the design of bending connecting portion and abutment portion, make the airtightness seal in the inflation and the sealed part between the close combination, improve the sealing effect, be applicable to the sealing device of various material, especially be applicable to the hard sealing material.

Description

Technical Field

[0001] This utility model belongs to the field of sealing technology, and more specifically, relates to an inflatable sealing component and a filter washing machine. Background Technology

[0002] Equipment for handling highly corrosive materials commonly uses fixed perfluoroether (PFEA) seals. However, due to the high hardness of PFEA, it is difficult for it to adapt to the microscopic deformation of the sealing surface during long-term use, resulting in uneven contact pressure distribution.

[0003] Especially at the junction of the movable filter cartridge and the cover plate in the filter washing machine, vibration and temperature changes during equipment operation can exacerbate the formation of gaps at the sealing interface, posing a risk of material leakage. Traditional sealing structures rely on the elastic deformation of materials to compensate for gaps, but rigid materials have limited deformation capacity, which cannot meet dynamic sealing requirements and affects the quality of pharmaceutical production. Utility Model Content

[0004] To address the shortcomings of existing technologies where rigid sealing materials cannot achieve complete sealing, this invention provides an inflatable sealing component and a filter washing machine.

[0005] The present invention provides an inflatable sealing component, which includes a first end and a second end for connecting to a mounting base, and an abutment portion for contacting and sealing a part to be sealed. A bent connection portion is provided between the end and the abutment portion. The first end, the second end, the bent connection portion, and the abutment portion are used to form a sealed cavity with the mounting base.

[0006] Preferably, the material of the inflatable seal is perfluoroether.

[0007] Preferably, a protrusion is provided above the abutment portion; preferably, when the inflatable seal is inflated, the protrusion extends beyond the upper plane of the mounting base and contacts the part to be sealed.

[0008] Preferably, there are at least two protrusions.

[0009] Preferably, the mounting base consists of a mounting base, a first retaining member, and a second retaining member, with the first retaining member and the second retaining member fixedly connected above the mounting base.

[0010] Preferably, a first fixing cavity is provided between the mounting base and the first retainer; the first fixing cavity is used to snap and fix the first end.

[0011] Preferably, a second fixing cavity is provided between the mounting base and the second retainer; the second fixing cavity is used to snap and fix the second end.

[0012] Preferably, the mounting base is provided with a support portion for supporting the inflatable seal.

[0013] Preferably, the support portion is located in the center of the mounting base, and its height does not exceed the height of the mounting base; preferably, the top of the support portion is provided with a limiting groove for fixing the inflatable seal.

[0014] This utility model also provides a filter washing machine, which includes: a frame, a movable filter cartridge on the frame, and a cover plate above the movable filter cartridge; an air-filled sealing element as described above is provided between the movable filter cartridge, the frame, and the cover plate; and a mounting base is fixedly disposed on the movable filter cartridge.

[0015] Compared with the prior art, the technical solution of this utility model has the following advantages: This utility model designs an inflatable sealing component structure, which is suitable for sealing devices of various materials, especially for hard sealing materials. Through the design of the bending connection part and the abutment part, the sealing component can be tightly combined with the component to be sealed when inflated, thereby improving the sealing effect.

[0016] This inflatable seal is used in filter washing machines and can achieve good sealing effect and corrosion resistance. Attached Figure Description

[0017] The features and advantages of this utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the utility model in any way. In the drawings: Figure 1 This is a cross-sectional view of the inflatable sealing component of this utility model; Figure 2 This is a schematic diagram of the structure of the filter washing machine in this utility model; Figure 3 This is a side view of the filter washing machine of this utility model; Figure label: 1. Frame; 2. Movable filter cartridge; 3. Cover plate; 4. Inflatable seal; 41. First end; 42. Bending connection; 43. Abutment part; 44. Protrusion; 45. Second end; 5. Mounting base; 51. Mounting base; 52. First retainer; 53. Second retainer; 54. First fixing cavity; 55. Second fixing cavity; 56. Support part. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are 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.

[0019] This utility model discloses an inflatable sealing component, such as... Figure 1 As shown, the inflatable seal 4 includes a first end 41 and a second end 45 for connecting with the mounting base 5, and an abutment portion 43 for contacting and sealing the part to be sealed. A bent connection portion 42 is provided between the end 41 and the abutment portion 43. The first end 41, the second end 45, the bent connection portion 42, and the abutment portion 43 are used to form a sealed cavity with the mounting base 5.

[0020] The first end 41 and the second end 45 form a dual-point positioning with the mounting base 5. The bent connection 42 refers to the serpentine transition section located between the end and the abutment part 43, which can be implemented using a continuous wave-shaped pleated structure to provide space for axial expansion and contraction. The abutment part 43 refers to the working contact surface at the top of the seal, which can be a flat or slightly convex curved surface, used to form a sealing interface after inflation. The sealed cavity is a closed space formed by expanding the inflatable seal 4 by filling it with compressed gas, and then fitting it against the mounting base 5.

[0021] Specifically, when the inflatable seal 4 is pressurized, the internal air pressure pushes the contact portion 43 upward, at which point the bent connecting portion 42 elastically extends. The fixed constraint of the first end 41 and the second end 45 fixes the inflatable seal 4 within the sealing seat 5. As the air pressure continues to rise, after the contact portion 43 contacts the part to be sealed, the bent connecting portion 42 further undergoes lateral bending deformation, making tight contact with the sealing seat 5. After inflation, the inflatable seal 4 and the sealing seat 5 form a sealed cavity, preventing material from entering the interior of the sealing seat 5.

[0022] In some specific embodiments, the material of the inflatable seal 4 is perfluoroether.

[0023] Perfluoroethers (PFEs) are fluorinated polymers formed by copolymerizing tetrafluoroethylene monomers with perfluoroalkyl vinyl ethers, possessing a continuous carbon-fluorine bond structure. By introducing ether bonds into the molecular chain, this material maintains corrosion resistance while reducing crystallinity, allowing for controlled deformation during inflation. The low surface energy of PFEs prevents the penetration of corrosive media, while the uniform contact pressure generated by the inflation structure compensates for insufficient deformation due to the material's inherent hardness; making it suitable for dynamic sealing applications.

[0024] In some specific embodiments, a protrusion 44 is provided above the abutment portion 43; when the inflatable seal 4 is inflated, the protrusion 44 extends beyond the upper surface of the mounting base 5 and contacts the part to be sealed.

[0025] The protrusion 44 refers to a local raised structure provided on the upper surface of the abutment 43. Specifically, it can be implemented with an arc-shaped or trapezoidal cross section. It generates upward deformation by inflating and expanding to compensate for the elasticity of the material.

[0026] Specifically, during the inflation process, the internal pressure of the inflatable seal 4 causes the protrusion 44 to deform upwards preferentially, and the amount of deformation is precisely controlled by the material's expansion characteristics. When the inflation pressure reaches the set value, the top of the protrusion 44 exceeds the reference surface of the mounting base 5 to form an interference fit, at which point a concentrated contact pressure is generated between the protrusion 44 and the surface to be sealed. Since the perfluoroether material has limited deformation capacity in a specific direction, the local deformation design of the protrusion 44 concentrates the limited elasticity in the contact area, compensating for the overall lack of elasticity through local high pressure.

[0027] In some embodiments, there are at least two protrusions 44. By providing multiple protrusions 44, multiple contact interfaces can be formed during inflation, resulting in a more uniform distribution of the sealing load. When a single protrusion 44 fails to seal due to wear or corrosion, the remaining protrusions can still provide a basic sealing effect, enhancing the reliability of the seal during long-term use.

[0028] In some specific embodiments, the mounting base 5 consists of a mounting base 51, a first retainer 52 and a second retainer 53, with the first retainer 52 and the second retainer 53 fixedly connected above the mounting base 51.

[0029] The mounting base 51 is a supporting component used to support the first retainer 52 and the second retainer 53. It can be made of metal or engineering plastic and is fixed to the first retainer 52 and the second retainer 53, which are made of the same material, by bolts or clips. The first retainer 52 is the component located above the mounting base 51, and the second retainer 53 can be made of the same material as the first retainer 52. The modular design facilitates the replacement of the inflatable seal 4.

[0030] In some specific embodiments, a first fixing cavity 54 is provided between the mounting base 51 and the first retainer 52; the first fixing cavity 54 is used to snap and fix the first end 41. A second fixing cavity 55 is provided between the mounting base 51 and the second retainer 53; the second fixing cavity 55 is used to snap and fix the second end 45. Snap-fit ​​fixing refers to achieving the connection between components through mechanical interlocking, specifically using a dovetail groove structure, a T-groove structure, or a barbed structure. After the end of the inflatable seal 4 is pressed into the fixing cavity, its edge is embedded in the limiting structure of the inner wall of the cavity, forming a constrained state without relative displacement. This ensures that the end position of the inflatable seal 4 remains stable during expansion, preventing leakage of the sealing cavity due to displacement. The snap-fit ​​fixing method eliminates the need for auxiliary fixing components, reducing assembly complexity and improving sealing reliability.

[0031] In some specific embodiments, the mounting base 51 is provided with a support portion 56 for supporting the inflatable seal 4. Specifically, this can be achieved by using a rectangular rib plate integrally formed with the mounting base 51, and a limiting groove can be provided on its top to fix the position of the inflatable seal. The rigid support counteracts the deformation of the inflatable seal 4 due to its own weight, maintaining the preset shape.

[0032] Specifically, the inflatable seal 4 is supported by the support 56 in the uninflated state to prevent displacement due to gravity. In some embodiments, the support 56 is located in the center of the mounting base 5, and its height does not exceed the height of the mounting base 5.

[0033] This utility model further provides a filter washing machine, such as Figures 2-3 As shown, it includes: a frame 1, a movable filter cartridge 2 on the frame 1, and a cover plate 3 on the top of the movable filter cartridge 2; an air-filled sealing element 4 as described above is provided between the movable filter cartridge 2 and the frame 1 and the cover plate 3, and a mounting base 5 is fixedly installed on the movable filter cartridge 2.

[0034] The inflatable seal 4 expands and deforms after inflation, using its elasticity to compensate for the hardness defects of the perfluoroether material, ensuring a tight seal. The mounting base 5 is fixed to the movable filter cartridge 2, ensuring the inflatable seal assembly 4 remains synchronized with the filter cartridge's movement, preventing seal failure due to relative displacement. The two sets of inflatable seals 4 respectively handle the dynamic sealing requirements generated by equipment vibration and the opening and closing of the cover plate 1. The sealing contact force is adjusted by the inflation pressure to adapt to different operating conditions. This achieves dynamic adaptation between the sealing assembly and moving parts in highly corrosive material environments, effectively improving sealing reliability and preventing material leakage from affecting pharmaceutical production quality. The elastic compensation effect of the inflatable seal 4 further reduces the negative impact of the perfluoroether material's hardness on sealing performance, ensuring long-term stable operation of the equipment.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An inflatable sealing element, characterized in that, The inflatable seal (4) includes a first end (41) and a second end (45) for connecting with the mounting base (5), and an abutment (43) for contacting and sealing the part to be sealed. A bent connection (42) is provided between the end (41) and the abutment (43). The first end (41), the second end (45), the bent connection (42), and the abutment (43) are used to form a sealed cavity with the mounting base (5).

2. The inflatable seal according to claim 1, characterized in that, The material of the inflatable seal (4) is perfluoroether.

3. The inflatable seal according to claim 1 or 2, characterized in that, A protrusion (44) is provided above the abutting part (43).

4. The inflatable seal according to claim 3, characterized in that, When the inflatable seal (4) is inflated, the protrusion (44) extends beyond the upper plane of the mounting base (5) and contacts the part to be sealed.

5. The inflatable seal according to claim 4, characterized in that, There are at least two protrusions (44).

6. The inflatable seal according to claim 1 or 4, characterized in that, The mounting base (5) consists of a mounting base (51), a first retainer (52), and a second retainer (53), with the first retainer (52) and the second retainer (53) fixedly connected above the mounting base (51).

7. The inflatable seal according to claim 6, characterized in that, A first fixing cavity (54) is provided between the mounting base (51) and the first retainer (52); the first fixing cavity (54) is used to snap and fix the first end (41).

8. The inflatable seal according to claim 7, characterized in that, A second fixing cavity (55) is provided between the mounting base (51) and the second retainer (53); the second fixing cavity (55) is used to snap and fix the second end (45).

9. The inflatable seal according to claim 6, characterized in that, The mounting base (51) is provided with a support (56) for supporting the inflatable seal (4).

10. The inflatable seal according to claim 9, characterized in that, The support (56) is located in the center of the mounting base (5), and its height does not exceed the height of the mounting base (5).

11. The inflatable seal according to claim 10, characterized in that, The top of the support (56) is provided with a limiting groove for fixing the inflatable seal (4).

12. A filter washing machine, characterized in that, include: A frame (1) is provided with a movable filter cartridge (2) and a cover plate (3) is provided above the movable filter cartridge (2); an air-filled sealing element (4) as described in any one of claims 1-9 is provided between the movable filter cartridge (2), the frame (1), and the cover plate (3); and the mounting base (5) is fixedly installed on the movable filter cartridge (2).

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