Novel TPU injection dustproof ring convenient to install

Abstract

The utility model relates to the technical field of dustproof rings, and discloses a novel polyurethane TPU injection dustproof ring convenient to install, which comprises a pipeline provided with a placing groove, and is characterized in that a sealing ring is placed in the placing groove, the interior of the sealing ring is hollow, a plurality of groups of buffer mechanisms distributed in a circumferential array are arranged in the sealing ring, and the buffer mechanisms are arranged in the placing groove. A connecting piece is arranged outside the pipeline, the connecting piece is fixedly connected with the sealing ring, and the connecting piece is arranged outside the pipeline in a sleeving mode. A plurality of guide sleeves distributed in a circumferential array mode penetrate through the connecting piece, the guide sleeves are fixedly connected, movable pieces are arranged in the guide sleeves in a sliding mode and extend out of the guide sleeves, and rubber sheets are fixedly installed at the ends of the movable pieces. A plurality of communicating pipes distributed in a circumferential array mode are fixedly installed on the annular pipe in a communicating mode, the communicating pipes are all inserted into the guide sleeve, a spring is fixedly connected into the guide sleeve, and the other end of the spring is fixedly connected to the movable part.

Description

Technical Field

[0001] The utility model relates to the technical field of dust-proof rings. More specifically, the utility model relates to a novel polyurethane TPU injection dust-proof ring that is convenient to install. Background Art

[0002] A dust-proof ring is an important sealing element and is widely used in multiple industries such as machinery, automobiles, and electrical appliances. The dust-proof ring is installed on the piston rod and is a reciprocating seal used to prevent external dust, water, pollutants, etc. from mixing into the hydraulic cylinder or other sealing mechanisms. The main function of the dust-proof ring is to remove dirt such as dust, sand, rainwater, and frost attached to the outer surface of the piston cylinder block, prevent these dirt from entering the internal part of the sealing mechanism, thereby protecting the normal operation of the equipment and extending its service life.

[0003] A dust-proof ring with a publication number of CN103123000A is specifically disclosed, which includes an annular ring. An inner dust-proof lip inclined radially towards the axis is provided on the inner periphery of the annular ring, and an outer dust-proof lip inclined radially towards the opposite direction of the axis is provided in the middle of the annular ring; the angle at which the outer dust-proof lip inclines towards the opposite direction of the axis is 15° - 20°; for the dust-proof ring of the present invention, since an outer dust-proof lip inclined radially towards the opposite direction of the axis is provided in the middle of the annular ring, it can effectively prevent pollutants from entering the hydraulic cylinder from the lip opening and the bottom of the groove, maintain the effectiveness of the piston rod seal, and prevent the quality problem of external leakage of the piston rod.

[0004] The existing polyurethane TPU injection dust-proof ring is inconvenient to install during the installation process. If the dust-proof ring is installed incorrectly or not in place, it may not be able to fit tightly on the components that need dust-proofing, thereby being unable to effectively block external dust, water, pollutants, etc. from entering the equipment interior, affecting the sealing performance and normal operation of the equipment. For this reason, we propose a novel polyurethane TPU injection dust-proof ring that is convenient to install. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a novel polyurethane TPU injection dust-proof ring that is convenient to install, which has the advantages of convenient installation and not being easily loosened.

[0006] To achieve the above object, the utility model provides the following technical solution: A novel polyurethane TPU injection dust-proof ring that is convenient to install, including a pipeline, a placement groove is opened on the pipeline, and it is characterized in that: a sealing ring is placed in the placement groove, the inside of the sealing ring is hollowly arranged, multiple groups of buffer mechanisms distributed in a circumferential array are arranged inside the sealing ring, a connecting piece is arranged outside the pipeline, the connecting piece is fixedly connected with the sealing ring, and the connecting piece is sleeved outside the pipeline.

[0007] A plurality of guide sleeves distributed in a circumferential array penetrate through the connecting member. The guide sleeves are fixedly connected to each other. An movable member is slidably disposed within the guide sleeve. The movable member extends outside the guide sleeve. A rubber sheet is fixedly installed at the end of the movable member. An annular pipe is sleeved outside the pipe. A plurality of communicating pipes distributed in a circumferential array are communicated with and fixedly installed on the annular pipe. The communicating pipes are all inserted into the guide sleeves. A spring is fixedly connected within the guide sleeve. The other end of the spring is fixedly connected to the movable member. An air nozzle assembly is disposed on the annular pipe. The air nozzle assembly is communicated with the annular pipe.

[0008] As a preferred technical solution of the present invention, the air nozzle assembly includes an air injection nozzle. The air injection nozzle is communicated with the annular pipe. A valve is installed on the air injection nozzle.

[0009] As a preferred technical solution of the present invention, the buffer mechanism includes a middle sleeve. The middle sleeve is disposed within the sealing ring. Movable rods that can slide are inserted at both ends of the middle sleeve. The ends of the movable rods are fixedly connected to the inner side of the sealing ring.

[0010] As a preferred technical solution of the present invention, elastic members are sleeved on the movable rods. The two ends of the elastic members are respectively fixedly connected to the middle sleeve and the sealing ring.

[0011] As a preferred technical solution of the present invention, anti-slip textures are provided on the outer side of the sealing ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] In the present invention, the movable member is pushed to move by air pressure. The movable member and the rubber sheet move synchronously. The rubber sheet presses against the outside of the pipe. By pressing against the outside of the pipe with a plurality of movable members, there is friction between the rubber sheet and the pipe. Thus, the connecting member is tightly fixed on the pipe. The connecting member is connected to the sealing ring. The installation process of the sealing ring is convenient and the sealing ring is not easily loosened during use, ensuring the stability and sealing performance of the sealing ring. The sealing ring is not easily loosened, which means that it can fit more stably on the sealing surface, reducing leakage of liquids, gases or solid particles caused by loosening. This is particularly important for occasions that require high sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a cross-section of the present invention Figure 1 ;

[0016] Figure 3 is a cross-section of the present invention Figure 2 ;

[0017] Figure 4 For the present utility model Figure 3 The enlarged schematic view of part A in

[0018] In the figure: pipeline 1, placement groove 2, sealing ring 3, connecting piece 4, guiding sleeve 5, movable part 6, rubber sheet 7, annular pipe 8, communicating pipe 9, spring 10, air injection nozzle 11, middle-position sleeve 12, movable rod 13, elastic part 14. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figures 1 to 4 shown, the present utility model provides a novel polyurethane TPU injection dust-proof ring that is easy to install, including a pipeline 1. A placement groove 2 is opened on the pipeline 1. It is characterized in that: a sealing ring 3 is placed in the placement groove 2. The sealing ring 3 is hollow inside. A plurality of buffer mechanisms distributed in a circumferential array are arranged in the sealing ring 3. A connecting piece 4 is arranged outside the pipeline 1. The connecting piece 4 is fixedly connected to the sealing ring 3 and sleeved outside the pipeline 1. A plurality of guiding sleeves 5 distributed in a circumferential array penetrate through the connecting piece 4. The guiding sleeves 5 are fixedly connected to each other. A movable part 6 is slidably arranged in the guiding sleeve 5. The movable part 6 extends outside the guiding sleeve 5. A rubber sheet 7 is fixedly installed at the end of the movable part 6. An annular pipe 8 is sleeved outside the pipeline 1. A plurality of communicating pipes 9 distributed in a circumferential array are communicated with and fixedly installed on the annular pipe 8. The communicating pipes 9 are all inserted into the guiding sleeves 5. A spring 10 is fixedly connected inside the guiding sleeve 5. The other end of the spring 10 is fixedly connected to the movable part 6. An air nozzle assembly is arranged on the annular pipe 8. The air nozzle assembly is communicated with the annular pipe 8.

[0021] Among them, the air nozzle assembly includes an air injection nozzle 11. The air injection nozzle 11 is communicated with the annular pipe 8. A valve is installed on the air injection nozzle 11. The buffer mechanism includes a middle-position sleeve 12. The middle-position sleeve 12 is arranged in the sealing ring 3. Movable rods 13 that can slide are inserted at both ends of the middle-position sleeve 12. The ends of the movable rods 13 are fixedly connected to the inner side of the sealing ring 3. Elastic parts 14 are sleeved on the movable rods 13. The two ends of the elastic parts 14 are respectively fixedly connected to the middle-position sleeve 12 and the sealing ring 3. Anti-slip textures are arranged on the outer side of the sealing ring 3.

[0022] The working principle and usage process of the present utility model:

[0023] By placing the sealing ring 3 into the placement groove 2, injecting air into the annular tube 8 through the air injection nozzle 11, the air enters the communication tube 9 from the annular tube 8, and then enters the guide sleeve 5. The movable part 6 is pushed to move by air pressure. The movable part 6 and the rubber sheet 7 move synchronously. The rubber sheet 7 presses on the outside of the pipeline 1. The outside of the pipeline 1 is pressed by multiple movable parts 6. There is friction between the rubber sheet 7 and the pipeline 1, so that the connecting piece 4 is tightly fixed on the pipeline 1. The connecting piece 4 is connected to the sealing ring 3. The installation process of the sealing ring 3 is convenient and the sealing ring 3 is not easy to loosen during use, ensuring the stability and sealing performance of the sealing ring 3. The sealing ring is not easy to loosen, which means that it can fit more stably on the sealing surface, reducing the leakage of liquid, gas or solid particles caused by loosening. This is particularly important for occasions that require high sealing performance.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel polyurethane TPU injection dust seal that is easy to install, comprising a pipe (1), wherein a placement groove (2) is provided on the pipe (1), and the characteristics are: A sealing ring (3) is placed in the placement groove (2), the sealing ring (3) is hollow inside, a plurality of buffer mechanisms distributed in a circumferential array are arranged inside the sealing ring (3), a connecting piece (4) is arranged outside the pipeline (1), the connecting piece (4) is fixedly connected to the sealing ring (3), and the connecting piece (4) is sleeved outside the pipeline (1); The connecting member (4) is penetrated by a plurality of guide sleeves (5) distributed in a circumferential array, the guide sleeves (5) are fixedly connected to the guide sleeves (5), a movable member (6) is slidably arranged in the guide sleeve (5), the movable member (6) extends outside the guide sleeve (5), a rubber sheet (7) is fixedly installed at the end of the movable member (6), an annular tube (8) is arranged on the outer shell of the pipeline (1), a plurality of connecting tubes (9) distributed in a circumferential array are connected and fixedly installed on the annular tube (8), the connecting tubes (9) are all inserted into the guide sleeve (5), a spring (10) is fixedly connected in the guide sleeve (5), the other end of the spring (10) is fixedly connected to the movable member (6), an air nozzle assembly is arranged on the annular tube (8), and the air nozzle assembly is connected to the annular tube (8).

2. According to claim 1, a novel polyurethane TPU injection dust seal that is easy to install, characterized in that: The gas nozzle assembly comprises a gas injection nozzle (11), the gas injection nozzle (11) is in communication with the annular tube (8), and a valve is installed on the gas injection nozzle (11).

3. The novel polyurethane TPU injection dust seal that is easy to install according to claim 2 is characterized in that: The buffer mechanism comprises a center sleeve (12), the center sleeve (12) is arranged in the sealing ring (3), and slidable movable rods (13) are inserted at both ends of the center sleeve (12), and the ends of the movable rods (13) are fixedly connected to the inner side of the sealing ring (3).

4. The novel polyurethane TPU injection dust seal that is easy to install according to claim 3 is characterized by: The movable rods (13) are sleeved with elastic members (14), and the two ends of the elastic members (14) are respectively fixedly connected to the middle sleeve (12) and the sealing ring (3).

5. The novel polyurethane TPU injection dust seal that is easy to install according to claim 4 is characterized in that: The outer side of the sealing ring (3) is provided with an anti-slip texture.

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