CN212868891U - Rotary joint convenient to assemble - Google Patents

Abstract

The utility model provides a rotary joint convenient for assembly, which comprises a shell, wherein a first tube cavity, a second tube cavity and a third tube cavity are sequentially arranged in the shell; a convex pipe is arranged at one end of the shell close to the first pipe cavity, the convex pipe extends towards the first pipe cavity, threads are arranged on the inner wall of the convex pipe, a first pipe body penetrates through the shell, and one end of the first pipe body is in threaded connection with the inner wall of the convex pipe; a spring is sleeved on the outer side of the convex tube, a second tube body is sleeved on the outer side of the first tube body, a convex ring is arranged on the outer wall of the second tube body, the convex ring is located in a third tube cavity, one end, close to the spring, of the second tube body is in rotating fit with the inner wall of the second tube cavity through a first graphite bearing, a second graphite bearing is sleeved on the outer side of the second tube body, the second graphite bearing is located on one side, far away from the first graphite bearing, of the convex ring, and an end cover is fixed to the open end of the shell through a screw; the ball bearing replaces the traditional rotary joint, effectively improves the heat resistance, is convenient to assemble and can be maintained conveniently.

Description

Rotary joint convenient to assemble

Technical Field

The utility model relates to a rotary joint field, more specifically relates to a rotary joint of convenient equipment.

Background

The rotary joint is a joint commonly used in industrial equipment, the rotary joint is also commonly used in film production equipment, the rotary joint for the equipment has the problems that the internal ball bearing is easy to carbonize and damage, although oil is regularly added for lubrication, the replacement period is short, and the replacement process is time-consuming and labor-consuming; and in case the assembly precision is not in place, the oil leakage problem can also appear, and the maintenance is very troublesome.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a rotary joint of convenient equipment is proposed, its novel structure replaces traditional rotary joint's ball bearing, effectively improves heat resistance to the structure equipment is convenient, can make things convenient for maintenance.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a rotary joint convenient for assembly, which comprises a shell, wherein one end of the shell is provided with a threaded hole, the other end is open, a first tube cavity, a second tube cavity and a third tube cavity are sequentially arranged in the shell from the threaded hole to the open end direction, the axes of the first tube cavity, the second tube cavity and the third tube cavity are superposed, the inner diameter of the first tube cavity is smaller than that of the second tube cavity, and the inner diameter of the second tube cavity is smaller than that of the third tube cavity; a convex pipe is arranged at one end, close to the first pipe cavity, of the shell, the convex pipe extends towards the direction of the first pipe cavity, threads are arranged on the inner wall of the convex pipe and are connected with the threaded holes, a first pipe body penetrates through the shell, one end of the first pipe body is in threaded connection with the inner wall of the convex pipe, a retaining ring is fixedly arranged at the end part of the first pipe body, and the retaining ring is clamped on the outer side of the convex pipe; the shell is provided with a discharge port corresponding to the bottom of the first tube cavity; a spring is sleeved outside the convex tube, a second tube body is sleeved outside the first tube body, the inner diameter of the second tube body is larger than the outer diameter of the first tube body, a convex ring is fixedly arranged on the outer wall of the second tube body, the convex ring is positioned at the third tube cavity, the diameter of the convex ring is larger than that of the second tube cavity, one end, close to the discharge port, of the second tube body is in rotating fit with the inner wall of the second tube cavity through a first graphite bearing, the end part of the first graphite bearing abuts against the spring, a second graphite bearing is sleeved outside the second tube body, the second graphite bearing is positioned on one side, away from the first graphite bearing, of the convex ring, an end cover is fixed at the open end of the shell through a screw, and the end cover forms pushing clamping for the second graphite bearing, the convex ring and the first graphite bearing, so that the second pipe body is rotationally clamped in the shell.

In a preferred technical solution of the present invention, a guide groove is formed at the bottom of the third lumen, a fixture block is slidably disposed in the guide groove, the fixture block is movable to a connecting step surface of the third lumen and the second lumen, and a top surface of the fixture block protrudes from a top surface of the guide groove and is flush with a bottom surface of the second lumen; the first graphite bearing is close to the fixed spacing ring that is equipped with in one end edge of bulge loop, the diameter of spacing ring is greater than the diameter of second lumen, the spacing ring corresponds the draw-in groove has been seted up to the fixture block, the spacing ring warp the draw-in groove with the fixture block cooperation, formation are right the effect of only revolving of first graphite bearing.

The utility model discloses in the technical scheme of preferred, the guide way is T type groove structure, the bottom of fixture block with guide way shape looks adaptation.

The utility model discloses in the technical scheme of preferred, a plurality of ring channels have been seted up to first graphite bearing's outer wall, the axis of ring channel with first graphite bearing's axis coincidence, and a plurality of the ring channel distributes along axis direction linear array.

The utility model discloses in the technical scheme of preferred, second graphite bearing keeps away from the terminal surface of bulge loop is inclined plane structure, and towards the setting of outer wall downward sloping, the inner wall of end cover corresponds the terminal surface slope adaptation of bulge loop.

The utility model discloses in the technical scheme of preferred, the terminal surface outer wall of the end that opens of casing is pasted and is equipped with sealed the pad.

The utility model has the advantages that:

the utility model provides a rotary joint convenient to assemble, its novel structure, the ball bearing of traditional rotary joint can be replaced to the design of first graphite bearing, second graphite bearing, effectively improves heat resistance, prolongs the life of equipment; the position cooperation between first graphite bearing, second body, bulge loop, spring, first lumen, second lumen and the third lumen can make first graphite bearing and second graphite bearing carry out effective pivoted centre gripping to the bulge loop when casing and end cover are fixed, and the production equipment is convenient, the maintenance in the later stage of also being convenient for.

Drawings

Fig. 1 is a schematic structural view of a swivel joint that is easy to assemble and provided in an embodiment of the present invention;

fig. 2 is a schematic view illustrating the expansion and engagement of the first graphite bearing and the fixture block according to an embodiment of the present invention.

In the figure:

100. a housing; 110. a first lumen; 120. a second lumen; 130. a third lumen; 131. a guide groove; 140. a convex pipe; 150. an outlet port; 200. a first pipe body; 210. a baffle ring; 300. a spring; 400. a second tube body; 410. a convex ring; 500. a first graphite bearing; 510. a limiting ring; 520. a card slot; 530. an annular groove; 600. a second graphite bearing; 700. an end cap; 800. a clamping block; 900. and a gasket.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, in a specific embodiment of the present invention, a rotary joint convenient for assembly is disclosed, which includes a casing 100, one end of the casing 100 is provided with a threaded hole, and the other end is open, a first lumen 110, a second lumen 120 and a third lumen 130 are sequentially arranged in the casing 100 from the threaded hole to the open end, axes of the first lumen 110, the second lumen 120 and the third lumen 130 are overlapped, an inner diameter of the first lumen 110 is smaller than an inner diameter of the second lumen 120, and an inner diameter of the second lumen 120 is smaller than an inner diameter of the third lumen 130; a protruding tube 140 is arranged at one end of the shell 100 close to the first tube cavity 110, the protruding tube 140 extends towards the first tube cavity 110, a thread is arranged on the inner wall of the protruding tube 140 and is connected with the threaded hole, a first tube body 200 is arranged in the shell 100 in a penetrating manner, one end of the first tube body 200 is in threaded connection with the inner wall of the protruding tube 140, a baffle ring 210 is fixedly arranged at the end part of the first tube body 200, and the baffle ring 210 is clamped at the outer side of the protruding tube 140; the bottom of the shell 100 corresponding to the first cavity 110 is provided with a discharge port 150; the spring 300 is sleeved on the outer side of the convex tube 140, the second tube body 400 is sleeved on the outer side of the first tube body 200, the inner diameter of the second tube body 400 is larger than the outer diameter of the first tube body 200, the convex ring 410 is fixedly arranged on the outer wall of the second tube body 400, the convex ring 410 is located in the third tube cavity 130, the diameter of the convex ring 410 is larger than that of the second tube cavity 120, one end, close to the discharge port 150, of the second tube body 400 is in rotating fit with the inner wall of the second tube cavity 120 through the first graphite bearing 500, the end portion of the first graphite bearing 500 supports against the spring 300, the second graphite bearing 600 is sleeved on the outer side of the second tube body 400, the second graphite bearing 600 is located on one side, far away from the first graphite bearing 500, the open end of the shell 100 is fixedly provided with the end cover 700 through a screw, and the end cover 700 is opposite to the second graphite bearing 600, The protruding ring 410 and the first graphite bearing 500 form a pushing and clamping function, so that the second pipe 400 is rotatably clamped in the housing 100.

The rotary joint convenient to assemble is novel in structure, and the ball bearings of the traditional rotary joint can be replaced by the first graphite bearing 500 and the second graphite bearing 600, so that the heat resistance is effectively improved, and the service life of equipment is prolonged; the position cooperation between first graphite bearing 500, second graphite bearing 600, second body 400, bulge loop 410, spring 300, first lumen 110, second lumen 120 and the third lumen 130 can make first graphite bearing 500 and second graphite bearing 600 carry out effective pivoted centre gripping to bulge loop 410 when casing 100 is fixed with end cover 700, and the production equipment is convenient, also is convenient for the maintenance in later stage.

Further, a guide groove 131 is formed at the bottom of the third lumen 130, a fixture block 800 is slidably disposed in the guide groove 131, the fixture block 800 is movable to a connecting step surface of the third lumen 130 and the second lumen 120, and a top surface of the fixture block 800 protrudes out of a top surface of the guide groove 131 and is flush with a bottom surface of the second lumen 120; a limiting ring 510 is fixedly arranged at the edge of one end of the first graphite bearing 500 close to the convex ring 410, the diameter of the limiting ring 510 is larger than that of the second tube cavity 120, a clamping groove 520 is formed in the limiting ring 510 corresponding to the clamping block 800, and the limiting ring 510 is matched with the clamping block 800 through the clamping groove 520 to form a rotation stopping effect on the first graphite bearing 500; this structural design can make things convenient for the installation of fixture block 800, form effectual spin-stopping to first graphite bearing 500, when carrying out the installation of fixture block 800, first graphite bearing 500, second body 400 and second graphite bearing 600, at first with fixture block 800 along guide way 131 propelling movement to the tip, the first graphite bearing 500 of counterpoint installation afterwards for draw-in groove 520 and fixture block 800 carry out the joint cooperation, then install second body 400 in proper order again, make bulge loop 140 support and hold first graphite bearing 500, embolia second graphite bearing 600 again, support bulge loop 140, install end cover 700 at last, thereby accomplish the card of first graphite bearing 500, second graphite bearing 600, second body 140 and hold the installation.

Further, the guide groove 131 is a T-shaped groove structure, and the bottom of the fixture block 800 is matched with the shape of the guide groove 131; the structural design can facilitate the alignment and installation of the fixture block 800, and prevent the fixture block 800 from being separated from the guide groove 131.

Further, a plurality of annular grooves 530 are formed in the outer wall of the first graphite bearing 500, the axis of the annular groove 530 coincides with the axis of the first graphite bearing 500, and the plurality of annular grooves 530 are distributed in a linear array along the axis direction; the structural design can reduce the contact and friction between the first graphite bearing 500 and the inner wall of the second tube cavity 120, and also facilitate heat transfer and heat dissipation.

Further, the end surface of the second graphite bearing 600 far from the protruding ring 410 is an inclined surface structure and is inclined downward toward the outer wall, and the inner wall of the end cover 700 is inclined and adapted to the end surface of the protruding ring 410.

Further, a sealing gasket 900 is adhered to the outer wall of the end face of the open end of the housing 100; the structural design can further enhance the sealing performance.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims (6)

1. The utility model provides a rotary joint of convenient equipment which characterized in that:

the device comprises a shell (100), wherein one end of the shell (100) is provided with a threaded hole, the other end of the shell is open, a first tube cavity (110), a second tube cavity (120) and a third tube cavity (130) are sequentially arranged in the shell (100) from the threaded hole to the open end, the axes of the first tube cavity (110), the second tube cavity (120) and the third tube cavity (130) are overlapped, the inner diameter of the first tube cavity (110) is smaller than that of the second tube cavity (120), and the inner diameter of the second tube cavity (120) is smaller than that of the third tube cavity (130); a convex pipe (140) is arranged at one end, close to the first pipe cavity (110), of the shell (100), the convex pipe (140) extends towards the first pipe cavity (110), threads are arranged on the inner wall of the convex pipe (140) and are connected with the threaded holes, a first pipe body (200) penetrates through the shell (100), one end of the first pipe body (200) is in threaded connection with the inner wall of the convex pipe (140), a baffle ring (210) is fixedly arranged at the end part of the first pipe body (200), and the baffle ring (210) is clamped on the outer side of the convex pipe (140); the shell (100) is provided with a discharge port (150) corresponding to the bottom of the first tube cavity (110);

the spring (300) is sleeved on the outer side of the convex pipe (140), the second pipe body (400) is sleeved on the outer side of the first pipe body (200), the inner diameter of the second pipe body (400) is larger than the outer diameter of the first pipe body (200), a convex ring (410) is fixedly arranged on the outer wall of the second pipe body (400), the convex ring (410) is located at the third pipe cavity (130), the diameter of the convex ring (410) is larger than that of the second pipe cavity (120), one end, close to the discharge port (150), of the second pipe body (400) is in rotating fit with the inner wall of the second pipe cavity (120) through a first graphite bearing (500), the end of the first graphite bearing (500) abuts against the spring (300), a second graphite bearing (600) is sleeved on the outer side of the second pipe body (400), and the second graphite bearing (600) is located on one side, far away from the first graphite bearing (500), of the convex ring (410), an end cover (700) is fixed at the open end of the shell (100) through screws, and the end cover (700) forms pushing clamping on the second graphite bearing (600), the convex ring (410) and the first graphite bearing (500) so that the second pipe body (400) is rotationally clamped in the shell (100).

2. An easily assembled swivel according to claim 1, wherein:

a guide groove (131) is formed in the bottom of the third lumen (130), a fixture block (800) is arranged in the guide groove (131) in a sliding manner, the fixture block (800) can move to a connecting step surface of the third lumen (130) and the second lumen (120), and the top surface of the fixture block (800) protrudes out of the top surface of the guide groove (131) and is flush with the bottom surface of the second lumen (120); the first graphite bearing (500) is close to the edge of one end of the convex ring (410) is fixedly provided with a limiting ring (510), the diameter of the limiting ring (510) is larger than that of the second tube cavity (120), the limiting ring (510) corresponds to the clamping block (800) and is provided with a clamping groove (520), and the limiting ring (510) passes through the clamping groove (520) and the clamping block (800) are matched to form a rotation stopping effect on the first graphite bearing (500).

3. An easily assembled swivel according to claim 2, wherein:

the guide groove (131) is of a T-shaped groove structure, and the bottom of the fixture block (800) is matched with the shape of the guide groove (131).

4. An easily assembled swivel according to claim 1, wherein:

a plurality of annular grooves (530) are formed in the outer wall of the first graphite bearing (500), the axis of each annular groove (530) is overlapped with the axis of the first graphite bearing (500), and the annular grooves (530) are distributed in a linear array mode along the axis direction.

5. An easily assembled swivel according to claim 1, wherein:

the end face, far away from the convex ring (410), of the second graphite bearing (600) is of an inclined face structure and is arranged in a downward inclined mode towards the outer wall, and the inner wall of the end cover (700) is matched with the end face of the convex ring (410) in an inclined mode.

6. An easily assembled swivel according to claim 1, wherein:

and a sealing gasket (900) is adhered to the outer wall of the end face of the open end of the shell (100).

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