CN202266770U

CN202266770U - Double-circulation rotary joint with inner pipe looseness prevention structure

Info

Publication number: CN202266770U
Application number: CN201120310304XU
Authority: CN
Inventors: 卢海旭; 李继锁; 沈元坤; 虞锦秀
Original assignee: JIANGSU TENGXUAN TECHNOLOGY CO LTD
Current assignee: JIANGSU TENGXUAN TECHNOLOGY CO LTD
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-06-06
Anticipated expiration: 2021-08-25

Abstract

The utility model relates to a double-circulation rotary joint with an inner pipe looseness prevention structure. A tail cover with a liquid channel is fixedly connected with one end of a hollow casing, a hollow end cover is fixedly connected with the other end of the casing, an outer pipe can be rotatably connected in the casing and the hollow holes of the end cover and the outer end of the outer pipe extends out of the end cover. An inner pipe is fixed in the tail cover which penetrates in the outer pipe, the inner pipe looseness prevention structure is arranged between the inner pipe and the tail cover and comprises a half ring matched with the tail cover conical surface, and the half ring is pressed and fixed on the tail cover through a pressing ring. The inner pipe looseness prevention structure arranged between the inner pipe and the tail cover utilizes the conical surface to achieve locking, thereby being reliable in looseness prevention.

Description

Pipe ends the logical swivel joint of double fluid of loose structure in having

Technical field

The utility model belongs to the mechanical sealing technology field, relates to being used for flowing medium and being input to the dynamic seal apparatus of rotating equipment from static pipeline, and pipe ends the logical swivel joint of double fluid of loose structure in specifically a kind of having.

Background technique

Swivel joint is that flowing medium (liquid, oil, gas etc.) is input to the dynamic seal apparatus the rotating equipment from static pipeline; Be to solve run, drip, leak; Energy saving, the protection environment, requisite mechanical seal basis critical component improves working conditions.

Swivel joint can be divided into single circulation type and two circulation type.Fixed and the interior pipe of pipe was rotary in wherein two circulation type swivel joints can be divided into again.

Fixed pair of circulation type swivel joint of pipe in existing is made up of housing, tail-hood, end cap, outer tube and interior pipe, and interior pipe directly is threaded on the tail-hood.Manage the phenomenon of loose or dislocation in this swivel joint in use can occur, thereby cause the fault of swivel joint.

Summary of the invention

The utility model provides and manages the logical swivel joint of the double fluid that ends loose structure in a kind of having to the deficiency of above-mentioned existing technology, and the interior pipe of this swivel joint is fixing reliable, can not become flexible.

The technological scheme that provides according to the utility model: pipe ends the logical swivel joint of double fluid of loose structure in a kind of having; End in hollow housing is fixedly connected with the tail-hood that has fluid passage; The other end of said housing is fixedly connected with the end cap of hollow, rotatably is connected with outer tube in the hollow hole of said housing and said end cap, and stretch out from said end cap the outer end of said outer tube; Said tail-hood internal fixation has interior pipe, and said interior pipe is applied in the said outer tube; Pipe ends loose device in being provided with between pipe and the said tail-hood in said, and said interior pipe ends loose device and comprises and the half point ring of said tail-hood cone match that said half point ring is pressed abd fixed on the said tail-hood by pressure ring.

Be provided with seal arrangement between said outer tube and the said housing; Said seal arrangement comprises the anti-sphere ring and the spherical end cap of ball face sealing; The sealing surface of said anti-sphere ring is protruding sphere; The sealing surface of said spherical end cap is a concave spherical surface, and said anti-sphere ring set is contained in outside the said outer tube and is resisted against a side of the bulge loop on the said outer tube, and said spherical end cap is sleeved on outside the said outer tube and is fixed between said housing and the said end cap.

Have the medium import on the circumferential surface of said outer tube, the medium import of said outer tube is opened on said bulge loop.

Between said end cap and the said outer tube guide ring is installed, between said housing and the said outer tube cylinder ring is installed, between the interior step of said cylinder ring and said housing spring is installed.

Said guide ring passes through the spline spacers on said end cap.

Said cylinder ring is fixed on the said housing through straight pin.

The outer end of said outer tube is equipped with flange through flange half point ring.

The outer end of said outer tube is processed with outside thread.

Compared with present technology the utility model has the following advantages: pipe ended loose device in the utility model was provided with between interior pipe and tail-hood, and pipe ends the locking of the loose device employing conical surface in this, and is locking reliable; The seal arrangement that is provided with between outer tube and the housing, seal ring adopt protruding ball face sealing face, have been multiplied ability and working life that sphere bears sealing load, have prevented the phenomenon that seal ring is cracked.

Description of drawings

Fig. 1 is first kind of embodiment's of the utility model a structural representation.

Fig. 2 is second kind of embodiment's of the utility model a structural representation.

Embodiment

Embodiment below in conjunction with in the accompanying drawing is further described the utility model.

Among Fig. 1, Fig. 2, comprise tail-hood 1, hex head bolt 2, spring washer 3, half point ring 4, pressure ring 5, big sealing gasket 6, hexagon socket head cap screw 7, spring 8, cylinder ring 9, straight pin 10, housing 11, outer tube 12, anti-sphere ring 13, little sealing gasket 14, spherical end cap 15, end cap 16, guide ring 17, spring washer 18, pan head screw 19, spline pad 20, flange 21, flange half point ring 22, red copper pad 23, interior pipe 24, outside thread 25 etc.

Like Fig. 1, shown in Figure 2; The utility model is the logical swivel joint of double fluid that pipe ends loose structure in a kind of having; End in hollow housing 11 is fixedly connected with the tail-hood 1 that has fluid passage through hex head bolt 2 and spring washer 3, between tail-hood 1 and housing 11, is lined with big sealing gasket 6; The other end of housing 11 is fixedly connected with the end cap 16 of hollow through hex head bolt 2 and spring washer 3, is lined with little sealing gasket 14 between end cap 16 and the housing 11.

Rotatably be connected with outer tube 12 in the hollow hole of housing 11 and end cap 16, stretch out from end cap 16 outer end of outer tube 12.Between end cap 16 and the outer tube 12 guide ring 17 is installed, guide ring 17 is fixed on the end cap 16 through spline pad 20.Between housing 11 and the outer tube 12 cylinder ring 9 is installed, cylinder ring 9 is fixed on the housing 11 through straight pin 10.Cylinder ring 9 constitutes the dual-supporting oilless bearing with guide ring 17, has supported outer tube 12, makes its stability of rotation.

Between outer tube 12 and housing 11, be provided with seal arrangement.The sealing device comprises the anti-sphere ring 13 and the spherical end cap 15 of ball face sealing.The sealing surface of anti-sphere ring 13 is protruding sphere; The sealing surface of spherical end cap 15 is a concave spherical surface; Anti-sphere ring 13 is sleeved on outside the outer tube 12 and is resisted against a side of the bulge loop on the outer tube 12, and spherical end cap 15 is sleeved on outside the outer tube 12 and is fixed between housing 11 and the end cap 16.Have the medium import on the circumferential surface of outer tube 12, the medium import of outer tube 12 is opened on above-mentioned bulge loop.

Anti-sphere ring 13 adopts protruding ball face sealing face, has been multiplied ability and working life that sphere bears sealing load, has prevented the phenomenon that seal ring is cracked.

Between the interior step of cylinder ring 9 and housing 11, spring 8 is installed.After anti-sphere ring 13 wearing and tearing, through the pressure of spring 8, outer tube 12 is moved axially, thereby make anti-sphere ring 13 compress spherical end cap 15, play the sealing compensation effect.

Pipe 24 in can also being fixed with through being threaded in the tail-hood 1, interior pipe 24 is applied in the outer tube 12.

Pipe ends loose device in being provided with between interior pipe 24 and the tail-hood 1.This interior pipe ends loose device and comprises and the half point ring 4 of tail-hood 1 cone match that half point ring 4 is pressed abd fixed on the tail-hood 1 through hexagon socket head cap screw 7 by pressure ring 5.Pressure ring 5 compresses half point ring 4, and pipe 24 in half point ring 4 is held tightly has stoped interior pipe 24 loose or dislocation from the tail-hood 1.Should end the locking of the loose device employing conical surface by interior pipe, locking reliable.

There are two kinds of Placements the outer end of outer tube 12: first kind of embodiment that a kind of Placement is as shown in Figure 1, and adopt flange to connect, through flange half point ring 22 flange 21 is installed in the outer end of outer tube 12, and the exterior edge face of outer tube 12 is provided with red copper pad 23; Another kind of Placement second kind of embodiment as shown in Figure 2, employing is threaded, and is processed with outside thread 25 in the outer end of outer tube 12.

The assembling process of the utility model is following: like Fig. 1, shown in Figure 2; Spring 8 is loaded on the interior step of housing 11 inner chambers; In the cotter way that straight pin 10 embeds on cylinder ring 9 cylindricals; On the spring 8 in the housing 11 of packing into together behind cylinder ring 9 cover upper exterior tubes 12 afterbodys, half of straight pin 10 will be aimed in the cotter way on the housing 11 again.With anti-sphere ring 13 cover upper exterior tubes 12, be contained in little sealing gasket 14 on the step of spherical end cap 15, cover upper exterior tube 12 is pressed in housing 11 stomidiums, loads onto end cap 16 usefulness hex head bolts 2 and is fastened on the end face of housing 11 with spring washer 3.Be enclosed within guide ring 17 on the outer tube 12 and embed in the end cap 16, spline pad 20 embeds in the spline groove of guide rings 17 end faces, with spring washer 18 and pan head screw 19 spline pad 20 is fixed on the end cap 16.When the utility model was connected with user's rotating shaft flange, cover upper flange 21, flange half point ring 22 and the red copper pad 23 at outer tube 12 water jacket places was as shown in Figure 1 again; If it is when being threaded, then outer tube 12 being replaced with the outer tube that has outside thread 25 and getting final product, as shown in Figure 2 with user's rotating shaft.Interior pipe 24 with in the internal thread that screws into tail-hood 1; The half point ring 4 of packing into, cover upper press ring 5, and be anchored on the interior edge face of tail-hood 1 with hexagon socket head cap screw 7; Thereby make pressure ring 5 compress the end face of half point ring 4 and promote the external diameter of half point ring 4 along pipe 24 in the inner conical surface of the tail-hood 1 reach locking; Prevent loose or dislocation, interior pipe 24 is put in the outer tube 12 with hexagon head bolt 2 and spring washer 3 be fastened to tail-hood 1 on housing 11 tail end faces then, and a big sealing gasket 6 is adorned in requirement on this end face.Side opening internal thread on the housing 11 is connected into and out of the metallic hose of medium with the user respectively with side opening internal thread on the tail-hood 1.

The utlity model has following advantage: 1, housing is the split fabricated construction, is easy to standard serialization, generalization, is easy to adaptation condition and changes; 2, body assembling type shell construction, machining accuracy is high and easy to manufacture, assembles easy to maintenance; 3, many places such as housing top, cylinder ring, guide ring, half point ring are provided with spline structure, and the swivel joint rotating speed is improved, good stability, and fault is few; 4, seal ring is anti-sphere (being protruding sphere), has been multiplied ability and working life that sphere bears sealing load, prevented wearing and tearing after or receive larger axis to the power increasing back sealing ring with regard to cracked phenomenon.

Claims

1. one kind has the logical swivel joint of double fluid that interior pipe ends loose structure; End in hollow housing (11) is fixedly connected with the tail-hood (1) that has fluid passage; The other end of said housing (11) is fixedly connected with the end cap (16) of hollow; Rotatably be connected with outer tube (12) in the hollow hole of said housing (11) and said end cap (16); Stretch out from said end cap (16) outer end of said outer tube (12), and said tail-hood (1) internal fixation has interior pipe (24), and said interior pipe (24) is applied in the said outer tube (12); It is characterized in that: pipe ends loose device in being provided with between pipe (24) and the said tail-hood (1) in said; Said interior pipe ends loose device and comprises and the half point ring (4) of said tail-hood (1) cone match that said half point ring (4) is pressed abd fixed on the said tail-hood (1) by pressure ring (5).

2. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 1 is described; It is characterized in that: be provided with seal arrangement between said outer tube (12) and the said housing (11); Said seal arrangement comprises the anti-sphere ring (13) and the spherical end cap (15) of ball face sealing; The sealing surface of said anti-sphere ring (13) is protruding sphere; The sealing surface of said spherical end cap (15) is a concave spherical surface; Said anti-sphere ring (13) is sleeved on outside the said outer tube (12) and is resisted against a side of the bulge loop on the said outer tube (12), and said spherical end cap (15) is sleeved on outside the said outer tube (12) and is fixed between said housing (11) and the said end cap (16).

3. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 2 is described, and it is characterized in that: have the medium import on the circumferential surface of said outer tube (12), the medium import of said outer tube (12) is opened on said bulge loop.

4. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 1 is described; It is characterized in that: between said end cap (16) and the said outer tube (12) guide ring (17) is installed; Between said housing (11) and the said outer tube (12) cylinder ring (9) is installed, between the interior step of said cylinder ring (9) and said housing (11) spring (8) is installed.

5. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 4 is described, and it is characterized in that: said guide ring (17) is fixed on the said end cap (16) through spline pad (20).

6. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 4 is described, and it is characterized in that: said cylinder ring (9) is fixed on the said housing (11) through straight pin (10).

7. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 1 is described, and it is characterized in that: the outer end of said outer tube (12) is equipped with flange (21) through flange half point ring (22).

8. pipe ends the logical swivel joint of double fluid of loose structure in having according to claim 1 is described, and it is characterized in that: the outer end of said outer tube (12) is processed with outside thread (25).