Rotary joint for filling nitrogen into copper pipe

Abstract

The utility model relates to a rotary joint for nitrogen charging in a copper pipe, and belongs to the technical field of rotary joints, the rotary joint comprises a stator end, the interior of the stator end is rotatably connected with a rotor end, and the outer surface of the rotor end is sleeved with a rotary Glyd ring, a shaft elastic check ring, a deep groove ball bearing and a hole elastic check ring; a sealing mechanism for improving the sealing performance is arranged on the right side of the stator end. According to the rotary joint for nitrogen charging in the copper pipe, through the arranged sealing mechanism, a pull plate is pulled, the pull plate drives a pull rod, a moving plate and a clamping rod to move together and extrudes a spring, two cover plates are connected to the outer surface of the rotor end in a sleeving mode, a first inserting rod is inserted into a first inserting groove, the cover plates are pushed leftwards, and a second inserting rod is inserted into a second inserting groove; the sealing block is inserted between the stator end and the rotor end, the pull plate is loosened, the pull rod and the movable plate are reset, the clamping rod can be clamped into the clamping hole, the cover plate and the sealing block are fixed, the sealing performance of the stator end and the rotor end is improved, and nitrogen leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, in particular to a rotary joint used for filling nitrogen in a copper tube. Background Art

[0002] Copper is a metal element with many excellent physical and chemical properties. It is one of the most commonly used materials in modern industry. Copper tubes are a commonly used industrial product. During the rolling process of copper tubes, in order to reduce the oxidation of copper tubes, it is often necessary to spray lubricating oil on the surface of copper tubes, and fill the inside of copper tubes with nitrogen to reduce oxidation.

[0003] The function of the rotary joint is to input the liquid from this side of the pipeline into the rotating or reciprocating equipment, and then discharge it from the connecting sealing device. The rotary joint is made of copper. In order to reduce oxidation during use, the inside of the rotary joint is sprayed with nitrogen. However, most of the existing gas structures are fixed structures, which are difficult to form a sealing structure with the copper tube. The sealing performance is poor, resulting in a lot of gas being wasted during the inflation process, affecting the use effect of the copper tube. Therefore, the present application proposes a rotary joint for nitrogen filling in a copper tube to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a rotary joint for filling nitrogen in a copper tube, which has the advantage of good sealing effect and solves the problem of poor sealing effect of the existing rotary joints.

[0005] To achieve the above object, the utility model provides the following technical solutions: a rotary joint for nitrogen filling in a copper tube, comprising a stator end, the interior of the stator end is rotatably connected to a rotor end, the outer surface of the rotor end is sleeved with a rotating Gly ring, a shaft elastic retaining ring, a deep groove ball bearing and a hole elastic retaining ring, and a sealing mechanism for improving sealing performance is provided on the right side of the stator end;

[0006] The sealing mechanism installation assembly and the limit assembly, the installation assembly includes two cover plates attached to the right side of the stator end, a sealing block and a second plug rod fixed to the left side of the cover plate, and two first plug rods fixed to the upper surface of the cover plate at the lower end, two first slots are opened on the lower surface of the cover plate at the upper end, two second slots are opened on the right side of the stator end, two cavities are opened inside the stator end, and two connecting grooves connected to the cavities are opened inside the stator end.

[0007] By adopting this technical solution, the stator end and the rotor end are further sealed by the sealing mechanism, thereby improving the sealing performance and preventing gas leakage during the nitrogen filling process.

[0008] Furthermore, the limiting assembly includes a telescopic rod fixed to the opposite side of the inner cavities of the two cavities, a spring sleeved on the outer surface of the telescopic rod, a movable plate fixed to the opposite side of the two telescopic rods, a pull rod fixed to the left side of the movable plate, a pull plate fixed to the opposite side of the two pull rods, and a clamping rod fixed to the opposite side of the two movable plates, and a clamping hole is provided on the upper surface of the second insertion rod.

[0009] By adopting this technical solution, the stator end and the rotor end are further sealed by the sealing mechanism, thereby improving the sealing performance and preventing gas leakage during the nitrogen filling process.

[0010] Furthermore, the cover plate and the sealing block are semi-annular, and the first insertion rod is slidably connected to the inside of the first slot.

[0011] By adopting this technical solution, the two cover plates are limited in position, making it convenient for the cover plates to seal the stator ends.

[0012] Furthermore, the two cover plates are sleeved on the outer surface of the rotor end, the outer surface of the sealing block is attached to the inner cavity wall of the stator end, and the inner cavity wall of the sealing block is attached to the outer surface of the rotor end.

[0013] By adopting this technical solution, the stator end and the rotor end are further sealed by the sealing block, thereby improving the sealing performance for nitrogen.

[0014] Furthermore, the second insertion rod is slidably connected to the inside of the second slot, and the clamping rod is slidably connected to the inside of the clamping hole.

[0015] By adopting this technical solution, the cover plate and the stator end are installed, thereby improving the stability of the cover plate installation.

[0016] Furthermore, the opposite sides of the two springs are respectively fixed to the opposite sides of the two movable plates, and the opposite sides of the two springs are respectively fixed to the opposite sides of the inner cavity of the cavity.

[0017] By adopting this technical solution, the movable plate is reset by the spring, and the clamping rod is driven to clamp into the inside of the clamping hole, so as to fix the cover plate and improve the sealing performance.

[0018] Furthermore, the pull rod is L-shaped and is slidably connected to the inside of the connecting groove.

[0019] By adopting this technical solution, it is convenient for the pull rod to drive the movable plate to move in the cavity.

[0020] Furthermore, a slider is fixed on the right side of the movable plate, a slide groove is provided on the right side of the inner cavity of the cavity, and the slider is slidably connected to the inside of the slide groove.

[0021] By adopting this technical solution, the stability of the moving plate is increased during movement.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The rotary joint for filling nitrogen in a copper tube uses a sealing mechanism to pull a pull plate, drive a pull rod, a movable plate and a clamping rod to move together and squeeze a spring, sleeve two cover plates on the outer surface of a rotor end, insert a first plug rod into a first slot, push the cover plate to the left, insert a second plug rod into a second slot, insert a sealing block between a stator end and a rotor end, release the pull plate, reset the pull rod and the movable plate, clamp the clamping rod into a clamping hole, fix the cover plate and the sealing block, improve the sealing performance, and prevent nitrogen leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional appearance diagram of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the sealing mechanism of the utility model;

[0026] Figure 3 It is a schematic diagram of the left side structure of the cover plate, the first plug rod and the first slot of the utility model;

[0027] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 1. stator end; 2. rotor end; 3. sealing mechanism; 301. cover plate; 302. sealing block; 303. first plug rod; 304. first slot; 305. cavity; 306. telescopic rod; 307. spring; 308. movable plate; 309. connecting groove; 310. pull rod; 311. pull plate; 312. second slot; 313. second plug rod; 314. clamping rod; 315. clamping hole; 4. rotating grid ring; 5. elastic retaining ring for shaft; 6. deep groove ball bearing; 7. elastic retaining ring for hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-2In this embodiment, it includes a stator end 1, the inside of the stator end 1 is rotatably connected to the rotor end 2, the outer surface of the rotor end 2 is sleeved with a rotating Gly ring 4, a shaft elastic retaining ring 5, a deep groove ball bearing 6 and a hole elastic retaining ring 7, the outer surface of the deep groove ball bearing 6 is in contact with the inner cavity wall of the stator end 1, and the deep groove ball bearing 6 facilitates the rotor end 2 to rotate stably inside the stator end 1. A sealing mechanism 3 for improving the sealing performance is provided on the right side of the stator end 1, and the stator end 1 and the rotor end 2 are further sealed by the sealing mechanism 3, thereby improving the sealing performance and preventing leakage during the nitrogen filling process.

[0031] See also Figure 2-4 In order to improve the sealing performance, the sealing mechanism 3 in this embodiment is provided with an installation component and a limit component. The installation component includes two cover plates 301 attached to the right side of the stator end 1, a sealing block 302 and a second plug rod 313 fixed to the left side of the cover plate 301, and two first plug rods 303 fixed to the upper surface of the lower end cover plate 301. Two first slots 304 are provided on the lower surface of the upper end cover plate 301, and two second slots 312 are provided on the right side of the stator end 1. Two cavities 305 are provided inside the stator end 1. Two connecting grooves 309 connected with the cavity 305 are provided inside the stator end 1. The sealing performance is improved by the cooperation between the cover plate 301 and the stator end 1.

[0032] The limiting assembly includes a telescopic rod 306 fixed on the opposite side of the inner cavity of the two cavities 305, a spring 307 sleeved on the outer surface of the telescopic rod 306, a movable plate 308 fixed on the opposite side of the two telescopic rods 306, a pull rod 310 fixed on the left side of the movable plate 308, a pull plate 311 fixed on the opposite side of the two pull rods 310, and a clamping rod 314 fixed on the opposite side of the two movable plates 308. A clamping hole 315 is provided on the upper surface of the second insertion rod 313. The pull plate 311 drives the pull rod 310 to slide inside the connecting groove 309. The pull rod 310 drives the movable plate 308 to move and squeeze the spring 307 and the telescopic rod 306. The movable plate 308 will simultaneously drive the clamping rod 314 to move together, so that the clamping rod 314 is away from the second slot 312.

[0033] Among them, the cover plate 301 and the sealing block 302 are semi-annular, and the first plug rod 303 is slidably connected to the inside of the first slot 304, which is used to limit the two cover plates 301, so that the cover plate 301 can seal the stator end 1. The two cover plates 301 are sleeved on the outer surface of the rotor end 2, and the outer surface of the sealing block 302 is attached to the inner cavity wall of the stator end 1, and the inner cavity wall of the sealing block 302 is attached to the outer surface of the rotor end 2. The stator end 1 and the rotor end 2 are further sealed by the sealing block 302, thereby increasing the sealing performance for nitrogen.

[0034] In addition, the second insertion rod 313 is slidably connected to the inside of the second slot 312, and is used to install between the cover plate 301 and the stator end 1, thereby improving the stability of the installation of the cover plate 301. The clamping rod 314 is slidably connected to the inside of the clamping hole 315, and is used to fix the cover plate 301, thereby improving the stability of the cover plate 301 and increasing the sealing between the stator end 1 and the rotor end 2.

[0035] In addition, the opposite sides of the two springs 307 are respectively fixed to the opposite sides of the two movable plates 308, and the opposite sides of the two springs 307 are respectively fixed to the opposite sides of the inner cavity of the cavity 305. The movable plate 308 is reset by the spring 307, driving the clamping rod 314 to be clamped into the inside of the clamping hole 315, fixing the cover plate 301 and improving the sealing performance. The pull rod 310 is L-shaped, and the pull rod 310 is slidably connected to the inside of the connecting groove 309, so that the pull rod 310 can drive the movable plate 308 to move in the cavity 305. A slider is fixed to the right side of the movable plate 308, and a slide groove is opened on the right side of the inner cavity of the cavity 305. The slider is slidably connected to the inside of the slide groove, thereby increasing the stability of the movable plate 308 when moving.

[0036] It should be noted that the telescopic rod 306 includes a rod sleeve, an inner rod, a limit block and a limit groove. The opposite sides of the two rod sleeves are respectively fixed to the opposite sides of the inner cavities of the two cavities 305, the inner rod is slidably connected to the inside of the rod sleeve, the limit block is fixed to the back of the inner rod, the limit groove is opened on the back of the inner cavity of the rod sleeve, the limit block is slidably connected to the inside of the limit groove, and the opposite sides of the two inner rods are respectively fixed to the opposite sides of the two movable plates 308, and the movable plates 308 are moved linearly through the telescopic rod 306.

[0037] The sealing mechanism 3 in this embodiment pulls the pull plate 311, drives the pull rod 310, the movable plate 308 and the clamping rod 314 to move together and squeeze the spring 307, so that the two cover plates 301 are sleeved on the outer surface of the rotor end 2, and the first insertion rod 303 is inserted into the inside of the first slot 304, and the cover plate 301 is pushed to the left, and the second insertion rod 313 is inserted into the second slot 312, so that the sealing block 302 is inserted between the stator end 1 and the rotor end 2, and the pull plate 311 is released, the pull rod 310 and the movable plate 308 are reset, and the clamping rod 314 is clamped into the clamping hole 315, and the cover plate 301 and the sealing block 302 are fixed to improve the sealing performance and prevent nitrogen leakage.

[0038] The working principle of the above embodiment is:

[0039] Pull the two pull plates 311 in opposite directions, the pull plates 311 drive the pull rod 310 to slide inside the connecting groove 309, the pull rod 310 drives the movable plate 308 to move and squeeze the spring 307 and the telescopic rod 306, the movable plate 308 will drive the clamping rod 314 to move together, so that the clamping rod 314 is away from the second slot 312, at this time, the two cover plates 301 are sleeved on the outer surface of the rotor end 2, the first plug 303 is inserted into the first slot 304, and the cover plate 301 is pushed leftward, the cover plate 301 The second insertion rod 313 on the left is inserted into the interior of the second slot 312, so that the sealing block 302 is inserted between the stator end 1 and the rotor end 2, and the sealing block 302 is fitted with the elastic retaining ring 7 of the hole, and the pull plate 311 is loosened. The pull rod 310 and the movable plate 308 will be reset under the action of the spring 307, driving the clamping rod 314 to move, so that the clamping rod 314 is clamped into the interior of the clamping hole 315, fixing the second insertion rod 313, and at the same time fixing the cover plate 301 and the sealing block 302, thereby improving the sealing and preventing nitrogen leakage.

Claims

1. A rotary joint for filling nitrogen in a copper tube, comprising a stator end (1), characterized in that: The stator end (1) is rotatably connected to the rotor end (2) inside, the outer surface of the rotor end (2) is sleeved with a rotating Gly ring (4), a shaft elastic retaining ring (5), a deep groove ball bearing (6) and a hole elastic retaining ring (7), and a sealing mechanism (3) for improving sealing performance is provided on the right side of the stator end (1); The sealing mechanism (3) comprises an installation component and a limiter component, wherein the installation component comprises two cover plates (301) attached to the right side of the stator end (1), a sealing block (302) and a second insertion rod (313) fixed to the left side of the cover plate (301), and two first insertion rods (303) fixed to the upper surface of the lower cover plate (301), two first slots (304) are provided on the lower surface of the upper cover plate (301), two second slots (312) are provided on the right side of the stator end (1), two cavities (305) are provided inside the stator end (1), and two connecting grooves (309) connected to the cavities (305) are provided inside the stator end (1).

2. A rotary joint for nitrogen filling in a copper tube according to claim 1, characterized in that: The limiting assembly includes a telescopic rod (306) fixed to the opposite side of the inner cavity of the two cavities (305), a spring (307) sleeved on the outer surface of the telescopic rod (306), a movable plate (308) fixed to the opposite side of the two telescopic rods (306), a pull rod (310) fixed to the left side of the movable plate (308), a pull plate (311) fixed to the opposite side of the two pull rods (310), and a clamping rod (314) fixed to the opposite side of the two movable plates (308); and a clamping hole (315) is provided on the upper surface of the second insertion rod (313).

3. A rotary joint for nitrogen filling in a copper tube according to claim 1, characterized in that: The cover plate (301) and the sealing block (302) are semi-annular in shape, and the first insertion rod (303) is slidably connected to the inside of the first slot (304).

4. A rotary joint for nitrogen filling in a copper tube according to claim 1, characterized in that: The two cover plates (301) are sleeved on the outer surface of the rotor end (2), the outer surface of the sealing block (302) is fitted to the inner cavity wall of the stator end (1), and the inner cavity wall of the sealing block (302) is fitted to the outer surface of the rotor end (2).

5. A rotary joint for nitrogen filling in a copper tube according to claim 2, characterized in that: The second insertion rod (313) is slidably connected to the inside of the second slot (312), and the locking rod (314) is slidably connected to the inside of the locking hole (315).

6. A rotary joint for nitrogen filling in a copper tube according to claim 2, characterized in that: The opposite sides of the two springs (307) are respectively fixed to the opposite sides of the two movable plates (308), and the opposite sides of the two springs (307) are respectively fixed to the opposite sides of the inner cavity of the cavity (305).

7. A rotary joint for nitrogen filling in a copper tube according to claim 2, characterized in that: The pull rod (310) is L-shaped, and the pull rod (310) is slidably connected to the inside of the connection groove (309).

8. A rotary joint for nitrogen filling in a copper tube according to claim 2, characterized in that: A sliding block is fixed on the right side of the movable plate (308), a sliding groove is provided on the right side of the inner cavity of the cavity (305), and the sliding block is slidably connected to the inside of the sliding groove.

Images