Air pipe with wear-resistant function

Abstract

The utility model relates to an air pipe with a wear-resisting function, which comprises a pipe body, a wear-resisting mechanism and a limiting component, and a plurality of fixing rings are fixedly mounted on the outer side of the pipe body; the wear-resisting mechanism comprises two wear-resisting plates which are connected between the fixing rings in a sliding mode, two rotating rods are rotatably connected to the interiors of the fixing rings, gears are fixedly installed on the outer sides of the rotating rods, and two racks are meshed with the gears. According to the air pipe with the wear-resisting function, the wear-resisting mechanism and the wear-resisting plate are arranged to protect the pipe body, the wear resistance of the pipe body is improved, the service life of the pipe body is prolonged, meanwhile, after the gear is rotated, the damaged wear-resisting plate is conveniently replaced, normal use of the wear-resisting plate is guaranteed, and by arranging the limiting assembly, when the gear is rotated and the wear-resisting plate is replaced, the service life of the wear-resisting plate is prolonged. And the movable rod limits the connecting block to prevent the clamping block from resetting, so that the convenience of replacing the wear-resisting plate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to an air duct with wear-resistant function. Background Technique

[0002] An air duct generally refers to a duct used for air supply, return air, exhaust, etc. in an air conditioning system. The air duct can be divided into various types according to the cross-sectional shape, such as circular air duct, rectangular air duct, oval air duct, etc., and can be divided into metal air duct, composite air duct, polymer air duct according to the material.

[0003] According to a wear-resistant central air duct disclosed in Chinese Patent CN210291862U, it includes a main pipe body, a first wear-resistant sleeve and a second wear-resistant sleeve. The outer side of the main pipe body is sleeved with a first retaining ring, a second retaining ring, a third retaining ring and a fourth retaining ring arranged in sequence along the axial direction. The first wear-resistant sleeve is coated on the outer side wall of the main pipe body between the third retaining ring and the fourth retaining ring. The second wear-resistant sleeve includes a fixing part, a protection part and a transition part for connecting the fixing part and the protection part. Among them, the fixing part is coated on the outer side wall of the main pipe body between the first retaining ring and the second retaining ring, and the protection part extends towards the first wear-resistant sleeve side and is sleeved on the outer side of the first wear-resistant sleeve. Its utility model has reasonable design and simple structure. The first wear-resistant sleeve can effectively improve the wear resistance of the central air duct. The second wear-resistant sleeve protects the first wear-resistant sleeve at the coal powder inlet near the central air duct and prolongs the service life of the first wear-resistant sleeve. After the air duct is used for a long time, the wear-resistant layer will be damaged due to wear or damaged by external impact, but it is inconvenient to replace the wear-resistant layer, resulting in the reduction of the wear resistance of the air duct. Therefore, an air duct with wear-resistant function is proposed to solve the above-mentioned problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides an air duct with wear-resistant function, which has the advantages of being convenient to replace wear-resistant plates, etc., and solves the problem that after the air duct is used for a long time, the wear-resistant layer will be damaged due to wear or damaged by external impact, but it is inconvenient to replace the wear-resistant layer, resulting in the reduction of the wear resistance of the air duct.

[0005] To achieve the above object, the utility model provides the following technical solution: An air duct with wear-resistant function, including a pipe body, a wear-resistant mechanism and a limit component, and a number of fixing rings are fixedly installed on the outer side of the pipe body;

[0006] The wear-resistant mechanism includes two wear-resistant plates that are slidably connected between the fixed rings. Two rotating rods are rotatably connected inside the fixed rings. Gears are fixedly installed on the outer sides of the rotating rods. Two racks are engaged with the gears. A torsion spring with one end fixedly connected to the inner wall of the fixed ring is fixedly installed on the side of the gear close to the pipe body. A limit block is fixedly installed on the side of the rack away from the pipe body. A clamping block for limiting the wear-resistant plate is fixedly installed at one end of the rack.

[0007] Further, the limiting component includes a connecting block fixedly installed at one end of the rotating rod. Limiting grooves are formed at the top and bottom of the fixed ring. A movable rod that penetrates through the connecting block at one end and extends into the limiting groove is slidably connected to the top of the connecting block. Two sliders are fixedly installed on the outer side of the movable rod. A return spring is sleeved on the outer side of the movable rod. A rotating block is fixedly installed at the end of the movable rod away from the limiting groove.

[0008] Further, the number of the fixed rings is several and they are equidistantly distributed on the outer side of the pipe body. The wear-resistant plate is U-shaped. The inner side of the wear-resistant plate fits the outer side of the pipe body. The opposite sides of the wear-resistant plate are in contact with each other.

[0009] Further, four chutes that are adapted to the size of the limit block are formed on the inner wall of the fixed ring. The limit block and the chute are both T-shaped.

[0010] Further, the limit block is slidably connected to the fixed ring through the chute. Card slots that are adapted to the size of the clamping block are formed on both the left and right sides of the wear-resistant plate.

[0011] Further, the side of the clamping block away from the rack penetrates through the fixed ring and extends into the card slot. One end of the rotating rod penetrates through and extends to the outside of the fixed ring.

[0012] Further, the number of the limiting grooves is several and they are symmetrically distributed in a ring shape at the top and bottom of the fixed ring. The outer side of the movable rod is slidably connected to the inner wall of the connecting block. The two ends of the return spring are respectively abutted against the slider and the inner wall of the fixed ring. The slider is slidably connected to the inner wall of the connecting block.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] For the air duct with wear-resistant function, by setting the wear-resistant mechanism, the wear-resistant plate protects the pipe body, increases the wear resistance of the pipe body, and improves the service life of the pipe body. At the same time, after rotating the gear, it is convenient to replace the damaged wear-resistant plate to ensure the normal use of the wear-resistant plate. By setting the limiting component, when rotating the gear and replacing the wear-resistant plate, the movable rod limits the connecting block to prevent the clamping block from resetting, further improving the convenience of replacing the wear-resistant plate. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural view of the present utility model;

[0016] Figure 2 for the present utility model Figure 1 is an enlarged view of part A in the present utility model;

[0017] Figure 3 is a front schematic view of the structure of the present utility model;

[0018] Figure 4 is a schematic structural view of the movable rod of the present utility model.

[0019] In the figure: 1 pipe body, 2 fixing ring, 3 wear-resistant plate, 4 rotating rod, 5 gear, 6 rack, 7 torsion spring, 8 limiting block, 9 clamping block, 10 connecting block, 11 slider, 12 limiting groove, 13 movable rod, 14 return spring, 15 rotating block, 16 sliding groove. Detailed Description of the Preferred Embodiment

[0020] 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 creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , a wind pipe with wear-resistant function in this embodiment includes a pipe body 1, a wear-resistant mechanism and a limiting component, and a plurality of fixing rings 2 are fixedly installed on the outer side of the pipe body 1.

[0022] The wear-resistant mechanism includes two wear-resistant plates 3 that are slidably connected between the fixed rings 2. Two rotating rods 4 are rotatably connected inside the fixed ring 2. A gear 5 is fixedly installed on the outer side of the rotating rod 4. Two racks 6 are engaged with the gear 5. A torsion spring 7 with one end fixedly connected to the inner wall of the fixed ring 2 is fixedly installed on the side of the gear 5 close to the pipe body 1. After rotating the gear 5, the torsion spring 7 facilitates the reset of the gear 5. A limit block 8 is fixedly installed on the side of the rack 6 away from the pipe body 1. A clamping block 9 for limiting the wear-resistant plate 3 is fixedly installed at one end of the rack 6. The number of fixed rings 2 is several and they are evenly distributed on the outer side of the pipe body 1. The shape of the wear-resistant plate 3 is U-shaped. The inner side of the wear-resistant plate 3 is in contact with the outer side of the pipe body 1. The opposite sides of the wear-resistant plate 3 are in contact with each other. The wear-resistant plate 3 wraps the pipe body 1 to improve the service life of the pipe body 1. Four chutes 16 that are adapted to the size of the limit block 8 are opened on the inner wall of the fixed ring 2. The shapes of the limit block 8 and the chute 16 are both T-shaped. The limit block 8 is slidably connected to the fixed ring 2 through the chute 16 to limit the rack 6 and enable the rack 6 to move stably. Card slots adapted to the size of the clamping block 9 are opened on both the left and right sides of the wear-resistant plate 3. The side of the clamping block 9 away from the rack 6 penetrates through the fixed ring 2 and extends into the interior of the card slot. One end of the rotating rod 4 penetrates through and extends to the outside of the fixed ring 2.

[0023] It should be noted that by setting the wear-resistant mechanism, the wear-resistant plate 3 protects the pipe body 1, increases the wear resistance of the pipe body 1, and improves the service life of the pipe body 1. At the same time, after rotating the gear 5, it is convenient to replace the damaged wear-resistant plate 3 to ensure the normal use of the wear-resistant plate 3.

[0024] The limit component includes a connection block 10 fixedly installed at one end of the rotating rod 4. Limit slots 12 are opened at both the top and bottom of the fixed ring 2. A movable rod 13 that penetrates through the connection block 10 at one end and extends into the interior of the limit slot 12 is slidably connected to the top of the connection block 10. Two sliders 11 are fixedly installed on the outer side of the movable rod 13. A return spring 14 is sleeved on the outer side of the movable rod 13. A rotating block 15 is fixedly installed at the end of the movable rod 13 away from the limit slot 12. The number of limit slots 12 is several and they are symmetrically distributed in a ring at the top and bottom of the fixed ring 2. The outer side of the movable rod 13 is slidably connected to the inner wall of the connection block 10. The two ends of the return spring 14 are respectively in contact with the slider 11 and the inner wall of the fixed ring 2. The return spring 14 applies a thrust to the slider 11 to facilitate the reset of the movable rod 13. At the same time, in cooperation with the torsion spring 7, the clamping block 9 can be more stable in the card slot, improving the installation stability of the wear-resistant plate 3. The slider 11 is slidably connected to the inner wall of the connection block 10.

[0025] It should be noted that by setting the limit component, when rotating the gear 5 and replacing the wear-resistant plate 3, the movable rod 13 limits the connection block 10 to prevent the clamping block 9 from resetting, further improving the convenience of replacing the wear-resistant plate 3.

[0026] The working principle of the above embodiment is as follows: When it is necessary to replace the wear-resistant plate 3, pull the rotating block 15 on one side of the wear-resistant plate 3, drive the movable rod 13 to move outside the limit groove 12, then rotate the rotating block 15, the rotating block 15 drives the connecting block 10 to rotate, and then drives the rotating rod 4 and the gear 5 to rotate. While the gear 5 rotates, it drives the two racks 6 to move, and at the same time drives the clamping block 9 to move to the outside of the clamping groove. Then align the movable rod 13 with the nearest limit groove 12, insert one end of the movable rod 13 into the limit groove 12, and repeat the above operations on the rotating block 15 on the other side of the wear-resistant plate 3, then the wear-resistant plate 3 can be replaced.

[0027] 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 actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are 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 also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. An air duct with wear-resistant function, comprising a pipe body (1), a wear-resistant mechanism and a limiting component, characterized in that: A number of fixing rings (2) are fixedly installed on the outer side of the pipe body (1); The wear-resistant mechanism includes two wear-resistant plates (3) slidably connected between the fixing rings (2). Two rotating rods (4) are rotatably connected inside the fixing rings (2). Gears (5) are fixedly installed on the outer sides of the rotating rods (4). Two racks (6) are engaged with the gears (5). A torsion spring (7) with one end fixedly connected to the inner wall of the fixing ring (2) is fixedly installed on the side of the gear (5) close to the pipe body (1). A limiting block (8) is fixedly installed on the side of the rack (6) away from the pipe body (1). A clamping block (9) for limiting the wear-resistant plate (3) is fixedly installed at one end of the rack (6).

2. The air duct with wear-resistant function according to claim 1, wherein: The limiting component includes a connecting block (10) fixedly installed at one end of the rotating rod (4). Limiting grooves (12) are opened at the top and bottom of the fixing ring (2). A movable rod (13) with one end passing through the connecting block (10) and extending into the limiting groove (12) is slidably connected to the top of the connecting block (10). Two sliders (11) are fixedly installed on the outer side of the movable rod (13). A return spring (14) is sleeved on the outer side of the movable rod (13). A rotating block (15) is fixedly installed at the end of the movable rod (13) away from the limiting groove (12).

3. The air duct with wear-resistant function according to claim 1, characterized in that: The number of the fixing rings (2) is several and they are evenly distributed on the outer side of the pipe body (1). The wear-resistant plate (3) is U-shaped. The inner side of the wear-resistant plate (3) fits the outer side of the pipe body (1). The opposite sides of the wear-resistant plate (3) are in contact with each other.

4. The air duct with wear-resistant function according to claim 1, wherein: Four chutes (16) which are adapted to the limiting blocks (8) in size are opened on the inner wall of the fixing ring (2). The limiting blocks (8) and the chutes (16) are both T-shaped.

5. A duct with wear-resistant function according to claim 1, characterized in that: The limiting blocks (8) are slidably connected to the fixing rings (2) through the chutes (16). Card slots which are adapted to the clamping blocks (9) in size are opened on the left and right sides of the wear-resistant plate (3).

6. The air duct with wear-resistant function according to claim 5, characterized in that: The side of the clamping block (9) away from the rack (6) passes through the fixing ring (2) and extends into the card slot. One end of the rotating rod (4) passes through and extends to the outside of the fixing ring (2).

7. The air duct with wear-resistant function according to claim 2, characterized in that: The number of the limiting grooves (12) is several and they are annularly and symmetrically distributed at the top and bottom of the fixing ring (2). The outer side of the movable rod (13) is slidably connected to the inner wall of the connecting block (10). The two ends of the return spring (14) are respectively abutted against the sliders (11) and the inner wall of the fixing ring (2). The sliders (11) are slidably connected to the inner wall of the connecting block (10).

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