Sealing ring

Abstract

The utility model provides a sealing ring, which belongs to the technical field of window-cleaning machines, is arranged in an annular groove on a base of a window-cleaning machine in a full-length manner, and comprises an elastic sealing ring with a wave-shaped section and a rigid supporting ring with a T-shaped section, the rigid supporting ring comprises a horizontal supporting base plate and a lateral limiting boss, the horizontal supporting base plate is fixedly installed on the side wall in the annular groove, the lateral limiting boss is embedded into the wave trough of the elastic sealing ring, the thickness change and the installation error of the cleaning cloth in the dry and wet state are self-adapted through elastic deformation of the elastic sealing ring, and the rigid supporting ring is embedded into the elastic sealing ring and provides lateral supporting for the elastic sealing ring. The elastic sealing ring is effectively prevented from being sucked to be shrunken and deformed when the negative pressure is too large, stable limiting of the sealing strip in the circumferential direction is ensured, and the problem that an existing window cleaning machine sealing strip fails in sealing due to the dry-wet change of cleaning cloth or installation errors in the negative pressure environment is solved.

Description

Technical Field

[0001] This utility model belongs to the field of window cleaning machine technology, and specifically relates to a sealing ring. Background Technology

[0002] Window cleaning machines need to be in close contact with the glass surface to perform cleaning operations. Therefore, window cleaning machines must have good sealing performance. As one of the key components of window cleaning machines, the sealing strip mainly fills the gap between the floating plate and the bottom shell of the window cleaning machine, preventing external dust, moisture and other impurities from entering the machine. At the same time, it also helps to maintain the negative pressure environment inside the window cleaning machine, ensuring that the floating plate can be stably adsorbed on the glass and achieve effective cleaning function.

[0003] Currently, most window cleaning machines in the industry use sealing cotton as the sealing strip. While sealing cotton can provide a certain degree of sealing, its sealing performance is limited and it is difficult to achieve the airtightness required for high negative pressure. In actual use, the wiping cloth shrinks due to changes in its wetness, and there are unavoidable errors during production and installation, making it difficult for the sealing cotton to maintain a good seal. This affects the overall performance and cleaning effect of the window cleaning machine, and may even cause problems such as unstable adsorption and low cleaning efficiency during operation.

[0004] Therefore, there is an urgent need for an adaptive sealing strip that can effectively solve the above problems in order to improve the performance and reliability of window cleaning machines. Utility Model Content

[0005] The purpose of this invention is to provide a sealing ring that addresses the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sealing ring is disposed throughout an annular groove on the base of a window cleaning machine. The opening of the annular groove faces the working surface. The sealing ring adapts to the height change of the negative pressure chamber between the base and the working surface through compression deformation. It includes an elastic sealing ring with a wave-shaped cross-section and a rigid support ring with a T-shaped cross-section. The elastic sealing ring is embedded in the annular groove and extends beyond the edge of the annular groove, contacting the working surface to form a dynamic negative pressure sealing interface. The rigid support ring includes a horizontal support base plate and a lateral limiting boss. The horizontal support base plate and the lateral limiting boss are integrally formed and perpendicular to each other. The horizontal support base plate is fixedly installed on the side wall of the annular groove. The lateral limiting boss is embedded in the trough of the elastic sealing ring to provide lateral support for the elastic sealing ring.

[0008] Further, the rigid support ring is fixedly installed on the inner periphery of the annular groove, the elastic sealing ring is arranged on the outer periphery of the rigid support ring, and the lateral limiting boss is embedded into the middle segment valley of the elastic sealing ring.

[0009] Further, the rigid support ring is integrally formed with the annular groove.

[0010] Further, the rigid support ring is integrally formed with the annular groove.

[0011] Further, the window cleaning machine comprises a base and a main body, a first cavity is formed between the main body and the base, and a second cavity is formed between the base and the working surface; a plurality of air outlet channels formed by air holes are arranged in the middle part of the side of the base opposite to the working surface, the annular groove is arranged at the outer periphery distance L of the air outlet channels, the inner diameter of the annular groove is greater than the outer diameter of the air outlet channels, the fan assembly is arranged in the main body, and the airflow formed by the fan assembly flows out through the first cavity, the air outlet channels and the second cavity, so that negative pressure is formed in the first cavity and the second cavity.

[0012] The lower surface of the base is slidably provided with a window cleaning plate, the middle part of the window cleaning plate is provided with a through hole with an inner diameter greater than the outer diameter of the air outlet channels, the upper surface of the window cleaning plate is provided with an annular clamping rail matched with the annular groove, and the annular groove and the annular clamping rail surround to form a cavity for mounting the sealing ring.

[0013] Further, the window cleaning plate is provided with a detachable cleaning cloth on the side facing the working surface, and the shape of the cleaning cloth is consistent with that of the window cleaning plate.

[0014] Compared with the prior art, the window cleaning machine has the advantages that:

[0015] The elastic sealing ring with the wave-shaped cross section can automatically adjust the compression degree according to the change of the negative pressure, effectively solves the sealing problem caused by the dry-wet shrinkage of the cleaning cloth and the production and installation error, when the negative pressure changes, the elastic sealing ring is compressed or stretched accordingly, so that good sealing performance is maintained, the sealing performance of the window cleaning machine is improved, and the cleaning effect and working stability of the window cleaning machine under different working conditions are enhanced; the rigid support ring with the T-shaped structure provides lateral stable support for the sealing strip, prevents the elastic sealing ring from being sucked and flattened under the action of the negative pressure, ensures that the elastic sealing ring maintains good form and sealing effect during the working process, and prolongs the service life.

[0016] The overall structure of the sealing strip is simple in design, convenient to manufacture and install, two embodiments can meet different window cleaning machine structure requirements, and has good universality and practicality, one is a sealing ring with a T-shaped section rigid support ring as an independent component, and the other is a sealing ring which directly utilizes an integrated lateral limiting structure on a window cleaning machine base to realize a matching function with the rigid support ring after optimization, the utility model is suitable for self-adaptive sealing strips in a negative pressure environment such as window cleaning machines and industrial cleaning equipment, can dynamically adapt to the dry and wet changes of a cloth and installation errors, and prevents the sealing structure from collapsing. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used together with the embodiments to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic view of the window cleaning machine of the utility model;

[0019] Figure 2 It is a schematic view of the window cleaning machine base of the utility model;

[0020] Figure 3 It is a sectional view of the window cleaning machine of the utility model;

[0021] Figure 4 It is Figure 3 a local enlarged view;

[0022] Figure 5 It is a schematic view of the window cleaning plate of the utility model;

[0023] In the drawings: 1-elastic sealing ring, 2-rigid support ring, 21-horizontal support base plate, 22-lateral limiting boss, 3-base, 31-vent hole, 32-air outlet channel, 33-annular groove, 4-main machine body, 7-window cleaning plate, 71-through hole, 72-annular clamping rail, 73-cavity. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] As Figures 1 to 5 shown, embodiment one:

[0026] The window cleaning machine comprises a base 3 and a main body 4, a first cavity is formed between the base 3 and the main body 4, and a second cavity is formed between the base 3 and a working surface; a plurality of air holes 31 are formed in the middle of the side of the base 3 opposite to the working surface to form an air outlet channel 32, an annular groove 33 is arranged at the outer circumferential distance L of the air outlet channel 32, the inner diameter of the annular groove 33 is larger than the outer diameter of the air outlet channel 32, a fan assembly is arranged in the main body 4, and the airflow formed by the fan assembly flows out through the first cavity, the air outlet channel 32 and the second cavity, so that negative pressure is formed in the first cavity and the second cavity;

[0027] A window cleaning plate 7 is slidably installed on the lower surface of the base 3, a through hole 71 with an inner diameter larger than the outer diameter of the air outlet channel 32 is formed in the middle of the window cleaning plate 7, an annular clamping rail 72 matched with the annular groove 33 is formed on the upper surface of the window cleaning plate 7, the annular groove 33 and the annular clamping rail 72 form a cavity 73 for mounting a sealing ring, and a detachable cleaning cloth is arranged on the side of the window cleaning plate 7 facing the working surface, and the shape of the cleaning cloth is consistent with that of the window cleaning plate 7.

[0028] A sealing ring is arranged in the annular groove 33 on the base 3, and the opening of the annular groove 33 faces the working surface; the sealing ring is compressed and deformed to adapt to the height change of the negative pressure cavity 73 between the base 3 and the working surface, and comprises an elastic sealing ring 1 with a wavy cross-section structure and a rigid supporting ring 2 with a T-shaped cross-section structure; the elastic sealing ring 1 is embedded in the annular groove 33, the elastic sealing ring 1 exceeds the edge of the annular groove 33 and contacts the working surface to form a dynamic negative pressure sealing interface; the rigid supporting ring 2 comprises a horizontal supporting base plate 21 and a lateral limiting boss 22, the horizontal supporting base plate 21 and the lateral limiting boss 22 are integrally formed and perpendicular to each other, the horizontal supporting base plate 21 is fixedly installed on the side wall in the annular groove 33, and the lateral limiting boss 22 is embedded in the wave trough of the elastic sealing ring 1 to provide lateral support for the elastic sealing ring 1.

[0029] In the embodiment, the rigid supporting ring 2 is embedded in the annular groove 33 as an independent component, the limiting boss supports the wave trough area of the inner circumferential edge of the elastic sealing ring 1, the radial displacement of the elastic sealing ring 1 is constrained through rigid contact, local stress is dispersed, the elastic sealing ring 1 is prevented from being cracked due to excessive deformation, the elastic sealing ring 1 is prevented from being excessively sucked into the window cleaning machine under the action of negative pressure, lateral stable support is achieved, the composite design of the rigid supporting ring 2 and the elastic sealing ring 1 ensures that the sealing interface maintains uniform compression deformation under dynamic working pressure, and the elastic sealing ring 1 maintains a good sealing form during working.

[0030] In an optional mode in the embodiment, the rigid supporting ring 2 is fixedly installed on the inner circumferential edge in the annular groove 33, the elastic sealing ring 1 is arranged on the outer circumferential edge of the rigid supporting ring 2, and the lateral limiting boss 22 is embedded in the middle wave trough of the elastic sealing ring 1.

[0031] In an optional mode of the embodiment of the application, the rigid support ring 2 is made of hard plastic or metal, and the elastic sealing ring 1 is made of silica gel or flexible rubber.

[0032] In the second embodiment, the rigid support ring 2 is integrally formed with the annular groove 33, that is, when the window cleaning machine base 3 is processed, a circumferential limiting boss functionally matched with the rigid support ring 2 is directly formed by a mold, the boss is evenly distributed along the inner side wall of the annular groove 33, the circumferential limiting boss and the annular groove 33 form a continuous rigid frame, which replaces the split rigid support ring 2, reduces assembly error and improves structural strength, further enhances the installation stability of the sealing ring, and at the same time, the elastic sealing ring 1 can still play the sealing role of self-adaptive deformation.

[0033] Working principle: when the fan assembly is started, the airflow formed by the fan assembly flows out through the first cavity, the air outlet channel 32 and the second cavity, so that negative pressure is formed in the first cavity and the second cavity. When the negative pressure acts on the window cleaning plate 7, the window cleaning plate 7 approaches the base 3 and compresses the elastic sealing ring 1. At this time, the wave-shaped cross section of the elastic sealing ring 1 deforms, and the limiting boss effectively blocks the excessive inward shrinkage of the elastic sealing ring 1 through mechanical interference, so as to avoid the elastic sealing ring 1 being sucked into the inside of the window cleaning machine. The elastic sealing ring 1 can automatically adjust the compression degree according to the size of the negative pressure, so that even in the case of dry and wet shrinkage of the cleaning cloth or installation error, good sealing effect can be maintained.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the application, and not for limiting the application, although the application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A seal ring, which is arranged in an annular groove on a squeegee base, the opening of the annular groove facing a working surface, the seal ring being adapted to the height change of the negative pressure chamber between the base and the working surface by compression deformation, characterized in that: The elastic sealing ring with a cross-section in a wavy structure is inlaid in the annular groove, and the elastic sealing ring exceeds the edge of the annular groove and is in contact with the working surface to form a dynamic negative pressure sealing interface.

2. The seal ring of claim 1, wherein: The rigid support ring is fixedly installed on the inner periphery of the annular groove, and the elastic sealing ring is arranged on the outer periphery of the rigid support ring.

3. The seal ring of claim 1, wherein: The rigid support ring is integrally formed with the annular groove.

4. The seal ring of claim 1, wherein: The rigid support ring is made of hard plastic or metal, and the elastic sealing ring is made of silica gel or flexible rubber.

5. The seal ring of claim 1, wherein: The window cleaning machine comprises a base and a main body, a first cavity is formed between the main body and the base, and a second cavity is formed between the base and the working surface; a plurality of air outlet channels composed of air holes are formed in the middle of the side of the base opposite to the working surface, the annular groove is arranged at the outer periphery distance L of the air outlet channels, the inner diameter of the annular groove is greater than the outer diameter of the air outlet channels, the fan assembly is arranged in the main body, and the airflow formed by the fan assembly flows out through the first cavity, the air outlet channels and the second cavity, so that negative pressure is formed in the first cavity and the second cavity; The window cleaning plate is slidably installed on the lower surface of the base, a through hole with an inner diameter greater than the outer diameter of the air outlet channels is formed in the middle of the window cleaning plate, and an annular clamping rail matched with the annular groove is formed on the upper surface of the window cleaning plate.

6. A seal ring according to claim 5, wherein: The window cleaning plate is provided with a detachable cleaning cloth on the side facing the working surface, and the shape of the cleaning cloth is consistent with that of the window cleaning plate.

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