Dustproof rotary joint

Abstract

The utility model relates to rotary joint technical field, concretely is a dustproof rotary joint, including fixed pipe and fixed pipe end joint rotation's rotary pipe, the right end department of fixed pipe is equipped with threaded column, is equipped with rotary groove in the right end of threaded column, is equipped with branch pipe on the outer wall of rotary pipe, is equipped with rotary column in the left end of rotary pipe, is equipped with limit ring in the right end of rotary column outer wall, is equipped with the fixed nut of screw thread connection with threaded column on rotary column, and the outside of the junction of fixed pipe and rotary pipe is equipped with dustproof subassembly, this dustproof rotary joint sets up fixed pipe with threaded column and has rotary pipe with rotary column horizontal joint cooperation, has three rubber pads on rotary column and increases with rotary groove horizontal sealing, and does not influence longitudinal rotation cooperation, and dustproof subassembly is set up on fixed pipe and rotary pipe, the first protective cap is set up on fixed nut, the second protective cap is set up on the boss, and the junction of fixed pipe and rotary pipe is protected, reduces dust and enters and influences rotation and sealing.

Description

Technical Field

[0001] This utility model relates to the field of rotary joint technology, specifically a dustproof rotary joint. Background Technology

[0002] A rotary joint is a pipe connection device. A rotary joint is a transitional connection and sealing device that allows fluid media to be input from a static system to a dynamic rotating system. Utility model CN222229799U discloses a dustproof rotary joint, including a housing and a rotating body disposed within the housing. The right end of the housing is provided with an end cap, and the right end of the rotating body extends out of the housing through the end cap. The right side of the end cap extends to the right to form a connecting sleeve. An annular cavity is provided between the inner wall of the connecting sleeve and the outer wall of the rotating body. A flexible dustproof sleeve is provided within the annular cavity. A cover plate is provided at the right end of the connecting sleeve. The outer surface of the dustproof sleeve is provided with several annular outer retaining rings that abut against the inner wall of the connecting sleeve, and the inner surface of the dustproof sleeve is provided with several annular inner retaining rings that abut against the outer surface of the rotating body. The above technical solution has the effects of waterproofing and dustproofing, effectively improving the service life of the rotary joint and making the rotary joint better adaptable to dusty and humid environments; however, the rotary joint does not have multi-head connection ports, and the combination structure of the joint rotation is not simple enough, and it can not provide stable dustproofing, and it is not convenient to replace and repair after the rotation is worn. Utility Model Content

[0003] The purpose of this invention is to provide a dustproof rotary joint to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A dustproof rotary joint includes a fixed tube and a rotary tube that is inserted and rotated at the end of the fixed tube. A threaded post is provided at the right end of the fixed tube, and a rotary groove is opened at the right end of the threaded post. Several first arc-shaped grooves with progressively increasing diameters are opened inside the rotary groove from left to right. A protruding post is provided on the outer wall of the threaded post near the left end. A branch pipe is provided on the outer wall of the rotary tube. A rotary post is provided at the left end of the rotary tube. A second arc-shaped groove is opened on the outer wall of the rotary post at a position corresponding to the first arc-shaped groove. A rubber gasket is provided in each of the second arc-shaped grooves. A limiting ring is provided at the right end of the outer wall of the rotary post. A positioning nut that is threadedly connected to the threaded post is fitted on the rotary post. A sealing gasket is provided inside the positioning nut. A dustproof component is fitted on the outer side of the junction of the fixed tube and the rotary tube. The dustproof assembly includes a first protective cap and a second protective cap. The first and second protective caps each have a prism groove on one of their opposite sides. The right end face of the first protective cap has several insertion holes. The second protective cap has insertion posts at positions corresponding to the insertion holes. The ends of the insertion posts each have screw holes, and each screw hole has a positioning bolt.

[0005] Furthermore, the threaded post and the fixed tube are integrally formed, the protruding post and the threaded post are integrally formed, the protruding post is prismatic, the width of the outer wall of the protruding post is adapted to the width of the inner wall of the prismatic groove, and the second protective cap is slidably inserted into the protruding post.

[0006] In this invention, the protruding post provides a point of force, facilitating the combination and fixing of the fixed tube and the rotating tube. The second protective cap is inserted and fitted with the protruding post, increasing the stability of the fit between the fixed tube and the rotating tube. The second protective cap provides tight protection for one side of the fixed tube.

[0007] Specifically, the branch pipe and the rotating pipe are integrally formed, the rotating column and the rotating pipe are integrally formed, the outer diameter of the rotating column is adapted to the inner diameter of the rotating groove, the rubber pad is annular, the inner ring of the rubber pad is tightly fitted with the second arc groove, and the outer ring of the rubber pad is correspondingly inserted into the first arc groove.

[0008] In this invention, the branch pipes facilitate multi-path discharge, and the multiple rubber pads enhance the lateral sealing between the rotating column and the rotating groove without affecting the longitudinal rotation of the rotating column within the rotating groove.

[0009] Secondly, the limiting ring and the rotating column are integrally formed, and the outer diameter of the limiting ring is adapted to the outer diameter of the threaded column.

[0010] In this invention, the limiting ring provides a point of force, facilitating the compression fit at the right end of the rotating column.

[0011] It should be noted that the inner wall of the positioning nut is provided with internal threads and is connected to the threaded post with corresponding threads. The outer diameter of the sealing gasket is adapted to the inner diameter of the positioning nut, and the sealing gasket is sleeved on the limiting ring and the threaded post.

[0012] In this invention, the positioning nut is threadedly connected to the threaded post, and with the sealing gasket in place, the sealing performance between the limiting ring and the threaded post is increased.

[0013] Furthermore, the outer diameter of the first protective cap is adapted to the outer diameter of the second protective cap, and the width of the outer wall of the positioning nut is adapted to the width of the inner wall of the prism groove on the first protective cap, and the first protective cap and the positioning nut are inserted into each other.

[0014] In this invention, the first protective cap is fitted onto the positioning nut to protect the positioning nut from dust, reducing the amount of dust that may enter the interior through the gap between the outer wall of the rotating tube and the positioning nut, thus affecting the internal rotation and sealing fit.

[0015] In addition, the insert and the second protective cap are integrally formed, the outer diameter of the insert is adapted to the inner diameter of the insertion hole, and the positioning bolt passes through the first protective cap and is threadedly connected to the screw hole on the insert.

[0016] In this invention, the first protective cap and the second protective cap are connected by inserting a post and inserting a hole, and with the help of a positioning bolt, the first protective cap and the second protective cap are tightly fixed together, which increases the stability of the assembly, protects the connection between the fixed tube and the rotating tube, and reduces the impact of dust entering.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model features a fixed tube with a threaded post and a rotating tube with a rotating post that are laterally inserted into each other. The rotating post has three rubber pads to increase the lateral sealing with the rotating groove without affecting the longitudinal rotation. A positioning nut with a sealing gasket is threadedly connected to the threaded post, and the sealing gasket is fitted on the limiting ring and the threaded post to increase the stability of the combination of the positioning nut and the fixed tube. A dustproof component is fitted on the fixed tube and the rotating tube. The first protective cap is fitted on the positioning nut, and the second protective cap is fitted on the protruding post. They are fixed by a positioning bolt to increase the stability of the combination and protect the connection between the fixed tube and the rotating tube, reducing the entry of dust and affecting rotation and sealing.

[0018] 2. This utility model increases the discharge path by setting up branch pipes. The convex post and the positioning nut are respectively connected to the prism grooves on the second protective cap and the first protective cap. The insertion post and the insertion hole are respectively connected to each other. The positioning bolt passes through the second protective cap and is threaded to the corresponding screw hole, which increases the stability of the assembly. The left end of the fixed pipe is connected to the corresponding external pipe. The ends of the branch pipe and the rotating pipe are connected to the corresponding conveying pipes in sequence. The rotating pipe and the fixed pipe can rotate flexibly without affecting the conveying. The rotating pipe and the fixed pipe are internally interconnected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the dustproof component removal structure of this utility model; Figure 3 This is a first-view structural diagram of the dustproof component of this utility model. Figure 4 This is a schematic diagram of the dustproof component separation structure of this utility model from a second perspective. Figure 5This is a schematic diagram of the fixed tube structure of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the fixed tube of this utility model; Figure 7 This is a schematic diagram of the rotating tube structure of this utility model; Figure 8 This is a schematic diagram of the cross-sectional structure of the rotating tube of this utility model; Figure 9 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0020] The meanings of the labels in the diagram are as follows: 1. Fixed tube; 10. Threaded post; 11. Protruding post; 12. Rotary groove; 120. First arc-shaped groove; 2. Rotating pipe; 20. Branch pipe; 21. Rotating column; 210. Limiting ring; 211. Second arc groove; 212. Rubber pad; 3. Dustproof assembly; 30. First protective cap; 300. Insertion hole; 31. Second protective cap; 310. Insertion post; 311. Screw hole; 32. Positioning bolt; 33. Prismatic groove; 4. Locating nut; 40. Sealing gasket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-9 This embodiment provides a technical solution: A dustproof rotary joint includes a fixed tube 1 and a rotary tube 2 that is inserted and rotated at the end of the fixed tube 1. A threaded post 10 is provided at the right end of the fixed tube 1. A rotary groove 12 is provided at the right end of the threaded post 10. Several first arc-shaped grooves 120 with progressively increasing diameters are provided inside the rotary groove 12 from left to right. A protruding post 11 is provided on the outer wall of the threaded post 10 near the left end. The threaded post 10 and the fixed tube 1 are integrally formed. The protruding post 11 and the threaded post 10 are integrally formed. The protruding post 11 is prismatic. The width of the outer wall of the protruding post 11 is adapted to the width of the inner wall of the prismatic groove 33. A second protective cap 31 is slidably inserted into the protruding post 11.

[0023] In this utility model, the protruding post 11 provides a force point, which facilitates the combination and fixing of the fixed tube 1 and the rotating tube 2. The second protective cap 31 is inserted and cooperates with the protruding post 11 to increase the stability of the fit between the fixed tube 1 and the rotating tube 2. The second protective cap 31 provides tight protection for one side of the fixed tube 1.

[0024] Furthermore, a branch pipe 20 is provided on the outer wall of the rotating tube 2, and a rotating column 21 is provided at the left end of the rotating tube 2. A second arc-shaped groove 211 is provided on the outer wall of the rotating column 21 at a position corresponding to the first arc-shaped groove 120. The branch pipe 20 and the rotating tube 2 are integrally formed, and the rotating column 21 and the rotating tube 2 are integrally formed. The outer diameter of the rotating column 21 is adapted to the inner diameter of the rotating groove 12. The rubber pad 212 is annular. The inner ring of the rubber pad 212 is tightly fitted with the second arc-shaped groove 211, and the outer ring of the rubber pad 212 is correspondingly inserted into the first arc-shaped groove 120.

[0025] In this invention, the branch pipe 20 is used to increase multi-path discharge, and the multiple rubber pads 212 are used to increase the transverse sealing between the rotating column 21 and the rotating groove 12, without affecting the longitudinal rotation of the rotating column 21 in the rotating groove 12.

[0026] Specifically, each of the second arc-shaped grooves 211 is provided with a rubber pad 212, and a limiting ring 210 is provided at the right end of the outer wall of the rotating column 21. The limiting ring 210 and the rotating column 21 are integrally formed, and the outer diameter of the limiting ring 210 is adapted to the outer diameter of the threaded column 10.

[0027] In this invention, the limiting ring 210 provides a point of force, facilitating the compression fit at the right end of the rotating column 21.

[0028] It should be noted that a positioning nut 4 is fitted on the rotating column 21 and is threadedly connected to the threaded column 10. A sealing gasket 40 is provided inside the positioning nut 4. The inner wall of the positioning nut 4 is provided with internal threads and is threadedly connected to the threaded column 10. The outer diameter of the sealing gasket 40 is adapted to the inner diameter of the positioning nut 4. The sealing gasket 40 is fitted on the limiting ring 210 and the threaded column 10.

[0029] In this utility model, the positioning nut 4 is threadedly connected to the threaded post 10, and with the sealing gasket 40 in close contact, the sealing performance between the limiting ring 210 and the threaded post 10 is increased.

[0030] Secondly, a dustproof component 3 is fitted on the outer side of the junction of the fixed tube 1 and the rotating tube 2; It should be noted that the dustproof component 3 includes a first protective cap 30 and a second protective cap 31. The first protective cap 30 and the second protective cap 31 each have a prism groove 33 on their opposite sides. The right end face of the first protective cap 30 has several insertion holes 300. The second protective cap 31 has a post 310 at the position corresponding to the insertion hole 300. The end of each post 310 has a screw hole 311, and each screw hole 311 has a positioning bolt 32.

[0031] Furthermore, the outer diameter of the first protective cap 30 is adapted to the outer diameter of the second protective cap 31, and the width of the outer wall of the positioning nut 4 is adapted to the width of the inner wall of the prism groove 33 on the first protective cap 30. The first protective cap 30 and the positioning nut 4 are inserted into each other.

[0032] In this utility model, the first protective cap 30 is fitted on the positioning nut 4 to protect the positioning nut 4 from dust, reducing the amount of dust that may enter the interior from the gap between the outer wall of the rotating tube 2 and the positioning nut 4, thus affecting the internal rotation and sealing fit.

[0033] Specifically, the insert 310 and the second protective cap 31 are integrally formed. The outer diameter of the insert 310 is adapted to the inner diameter of the insertion hole 300. The positioning bolt 32 passes through the first protective cap 30 and is threadedly connected to the screw hole 311 on the insert 310.

[0034] In this utility model, the first protective cap 30 and the second protective cap 31 are connected by inserting the insert post 310 and inserting the hole 300. With the cooperation of the positioning bolt 32, the first protective cap 30 and the second protective cap 31 are tightly fixed and installed, which increases the stability of the assembly, protects the connection between the fixed tube 1 and the rotating tube 2, and reduces the impact of dust entering.

[0035] When using the dustproof rotary joint of this embodiment, firstly, the threaded post 10 with the protruding post 11 is combined and fixed with the fixed tube 1, then the rotary tube 2 with the branch tube 20 is combined and fixed with the rotary post 21 with the second arc groove 211, and the positioning nut 4 with the sealing gasket 40 is sleeved on the rotary tube 2, and the opening of the positioning nut 4 is tightly fitted with the outer wall of the rotary tube 2. The rotating tube 2 is connected to the rotating groove 12 via the rotating column 21, and the outer walls of the three rubber pads 212 are sequentially connected to the corresponding first arc grooves 120. The limiting ring 210 is tightly fitted to the right end of the threaded column 10. Then, the sealing gasket 40 is sleeved on the ends of the limiting ring 210 and the threaded column 10, and the positioning nut 4 is threadedly connected to the threaded column 10. After being tightly fitted, the outer wall of the positioning nut 4 is flush with the outer wall of the protruding column 11. Then, the prism groove 33 on the second protective cap 31 is connected to the protruding column 11, the prism groove 33 on the first protective cap 30 is connected to the positioning nut 4, the insertion hole 300 on the first protective cap 30 is connected to the insertion column 310, and the positioning bolt 32 passes through the second protective cap 31 and is threadedly connected to the screw hole 311 on the insertion column 310, so as to achieve the sealing of the gap at the connection between the rotating tube 2 and the fixed tube 1 by the dustproof component 3. The left end of the fixed pipe 1 is connected to the corresponding external conveying pipe. The rotating pipe 2 and the branch pipe 20 are connected to the corresponding external connecting pipe in sequence. The rotating pipe 2 rotates and fits in the fixed pipe 1 without leakage of liquid or air. After long-term use, the connection needs to be cleaned or the sealing gasket 40 and rubber gasket 212 need to be replaced to reduce wear and tear and affect the continuous sealing. The positioning bolt 32 is removed, the dustproof component 3 is separated, the positioning nut 4 is removed, and the fixed pipe 1 and the rotating pipe 2 are separated, which makes it easy to remove and replace the sealing gasket 40 and rubber gasket 212.

Claims

1. A dustproof rotary joint, comprising a fixed tube and a rotary tube whose end is inserted into and rotates, characterized in that: A threaded post is provided at the right end of the fixed tube, and a rotating groove is provided at the right end of the threaded post. Several first arc-shaped grooves with progressively increasing diameters are provided inside the rotating groove from left to right. A protruding post is provided on the outer wall of the threaded post near the left end. A branch pipe is provided on the outer wall of the rotating tube. A rotating post is provided at the left end of the rotating tube. A second arc-shaped groove is provided on the outer wall of the rotating post at a position corresponding to the first arc-shaped groove. A rubber pad is provided in each of the second arc-shaped grooves. A limiting ring is provided at the right end of the outer wall of the rotating post. A positioning nut that is threadedly connected to the threaded post is fitted on the rotating post. A sealing gasket is provided inside the positioning nut. A dustproof component is fitted on the outer side of the junction between the fixed tube and the rotating tube. The dustproof assembly includes a first protective cap and a second protective cap. The first and second protective caps each have a prism groove on one of their opposite sides. The right end face of the first protective cap has several insertion holes. The second protective cap has insertion posts at positions corresponding to the insertion holes. The ends of the insertion posts each have screw holes, and each screw hole has a positioning bolt.

2. The dustproof rotary joint according to claim 1, characterized in that: The threaded post and the fixed tube are integrally formed, the protruding post and the threaded post are integrally formed, the protruding post is prismatic, the width of the outer wall of the protruding post is adapted to the width of the inner wall of the prismatic groove, and the second protective cap is slidably inserted into the protruding post.

3. The dustproof rotary joint according to claim 1, characterized in that: The branch pipe and the rotating pipe are integrally formed, the rotating column and the rotating pipe are integrally formed, the outer diameter of the rotating column is adapted to the inner diameter of the rotating groove, the rubber pad is annular, the inner ring of the rubber pad is tightly fitted with the second arc groove, and the outer ring of the rubber pad is correspondingly inserted into the first arc groove.

4. The dustproof rotary joint according to claim 1, characterized in that: The limiting ring and the rotating column are integrally formed, and the outer diameter of the limiting ring is adapted to the outer diameter of the threaded column.

5. The dustproof rotary joint according to claim 1, characterized in that: The positioning nut has an internal thread on its inner wall and is threadedly connected to the threaded post. The outer diameter of the sealing gasket is adapted to the inner diameter of the positioning nut. The sealing gasket is sleeved on the limiting ring and the threaded post.

6. The dustproof rotary joint according to claim 1, characterized in that: The outer diameter of the first protective cap is adapted to the outer diameter of the second protective cap, and the width of the outer wall of the positioning nut is adapted to the width of the inner wall of the prism groove on the first protective cap. The first protective cap and the positioning nut are inserted into each other.

7. The dustproof rotary joint according to claim 1, characterized in that: The insert and the second protective cap are integrally formed. The outer diameter of the insert is adapted to the inner diameter of the insertion hole. The positioning bolt passes through the first protective cap and is threadedly connected to the screw hole on the insert.

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