CN202546075U

CN202546075U - Improved structure of swivel joint

Info

Publication number: CN202546075U
Application number: CN2011205507809U
Authority: CN
Inventors: 杨基东
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-26
Filing date: 2011-12-26
Publication date: 2012-11-21
Anticipated expiration: 2021-12-26

Abstract

The utility model provides an improved structure of a swivel joint. The inner side of a hollow channel of a seat body is provided with a ring bulge which can be used for positioning the axial displacement of a floating static ring of a locking device, a rotating shaft with a movable seal ring is pivoted in the channel, the movable seal ring and the floating static ring are mutually propped to form a locking leak stoppage state, one side of the floating static ring of the locking device is provided with a push ring and a spring positioned between the push ring and the channel of the seat body, and a step-shaped annular propping part of the floating static ring is sleeved with two O-shaped rings and a hard gasket positioned between the O-shaped rings. When the spring is elastically propped to the push ring to push one of the O-shaped rings, structure support and isolation can be formed by the hard gasket so as to prevent the influence on or the loss of the seal and leak stoppage functions of the original single O-shaped ring due to superposition and compression with the other O-shaped ring, and the entire service life can be effectively prolonged.

Description

The rotary joint structure improvement

Technical field

The utility model provides a kind of rotary joint structure improvement; Especially be socketed with the hard washer of two O type rings and O type interannular on the ring protuberance of location, the inboard place of the passage of finger pedestal; And by hard washer formation support structure and isolation; In order to prevent the function of two O type rings original single O type ring, more can effectively prolong whole service life because of overlapping compression influences or loses.

Background technique

Generally be applicable to the swivel joint of industries production machine tool conveyance fluids in rotation such as weaving, papermaking, rubber, plastic cement and chemistry; Carry the tightness when carrying out owing to consider rotation, produce situation about revealing with the fluid in the swivel joint of avoiding flowing through and take place, therefore; Promptly need present the state of sealing fully on its structure; See also shown in Fig. 2 and the 2A, be the side cutaway view of commonly using swivel joint and the partial enlarged drawing of Fig. 2, find out by knowing among the figure; Wherein the passage A0 internal face place of this pedestal A is provided with the A1 of rank portion; And in rank there is floating stationary ring B the A1 of portion place location, and be socketed with O type ring B2 in the annular groove B1 on the floating stationary ring B, in the passage A0 of pedestal A, then be pivoted with a running shaft C in addition; And in the channel C 0 one side places of running shaft C combine the location that pivoted loop C1 is arranged and be positioned at pivoted loop C1 with running shaft C between the O type ring C2 of institute's socket, and pivoted loop C1 contacts at and floats the effect of reaching the locking leak-stopping on the stationary ring B.

Yet; This O type ring B2 is socketed on floating stationary ring B and goes up in the annular groove B1 of proper fit size; And utilize O type ring B2 resiliently deformable compression to be packed in the effect that the formed gap of tolerance, inside and outside footpath between the passage A0 of floating stationary ring B and pedestal A reaches leak-stopping; But because of being easy to generate permanent deformation or material ageing after the permanent use of O type ring B2; And can't keep original elastic compression function, when fluid flow between forming between the passage A0 of floating stationary ring B and pedestal A during the crack, just can cause the situation generation of leakage.

Moreover; See also shown in Fig. 3 and 3A; For another commonly uses the side cutaway view of swivel joint and the partial enlarged drawing of Fig. 3; By knowing and find out among the figure, wherein this O type ring B2 is socketed on floating stationary ring B and goes up on proper fit size step-like, utilizes O type ring B2 compression to be packed in that gap, inside and outside footpath reaches the effect of leak-stopping between the passage A0 of floating stationary ring B and pedestal A except being similarly; And add in regular turn again that in floating stationary ring B rear end a throw-out collar B3 and spring B 4 keep thrust; When O type ring C2 produces elastic force when tired in permanent use, can push against through spring B 4 and push O type ring C2 in throw-out collar B3 and keep the tightness of inside and outside footpath gap location and do not leak, but still can produce permanent deformation or material ageing after using because of O type ring B2 is permanent; Make inside and outside footpath formation micro gap between the passage A0 of floating stationary ring B and pedestal A and can't guarantee the sealing leak-stopping function of O type ring B2, then remain to be engaged in this journey dealer and design effectively again and solve.

The model utility content

Therefore; Model utility people is because commonly use problem and the disappearance that swivel joint uses; So collect related data via assessing in many ways and consider, and utilize the research and development experience for many years of engaging in the industry constantly to study and revise, the beginning is designed the novel birth of structure improvement of this kind swivel joint.

The technological scheme that the utility model adopted is:

A kind of rotary joint structure improvement; Comprise: pedestal, blocking device and running shaft; Wherein said pedestal inside has the passage that supplies fluid flow, and the ring protuberance that is provided with the floating stationary ring location axial displacement that supplies blocking device in the inboard place of said passage, then is pivoted with the running shaft with moving envelope ring in the said passage of said pedestal; And the said floating stationary ring of said moving Feng Huanyu is conflicted each other and is formed locking leak-stopping state, it is characterized in that:

The said floating stationary ring one side place of said blocking device is provided with passes ring and the spring between the said passage of said passing ring and said pedestal; And be formed with the annular resisting part that is the terrace shape on the said floating stationary ring outer ring surface; And be socketed with on the said annular resisting part and supply to pass the ring pushing and pressing, make the two O type rings and the hard washer between O type ring that form sealing state between said floating stationary ring and the said ring protuberance internal face place, thereby between said two O type rings, form support structure through said hard washer block.

The main purpose of the utility model is that the inboard place of the inner hollow channel of pedestal is provided with the ring protuberance of the floating stationary ring location that can supply blocking device; And be the hard washer that is socketed with two O type rings on the annular resisting part of terrace shape and is positioned at O type interannular in floating stationary ring; When spring supports to arrive in when passing ring and push against wherein on the O type ring; Can on the flat stop surface of hard washer, form good support structure and isolation effect by O type ring block; In order to prevent to influence or lose the sealing leak-stopping function of original single O type ring with another overlapping compression of O type ring; Guarantee single O type ring original sealing leak-stopping function and durable in use by this, more can effectively prolong whole service life.

The secondary objective of the utility model is that place, hard washer both sides is formed with flat stop surface; When on passing ring, being the pushing part of encircling convex and pushing against on O type ring; Can make two O type rings receive respectively the stop surface of hard washer, floating stationary ring annular resisting part and pedestal ring protuberance internal face place mutual extrusion and produce uniform resiliently deformable; And O type ring section configuration is approximate rectangular, thereby but the micro gap that produces between the ring protuberance of the annular resisting part of the floating stationary ring of complete closed and pedestal forms the effect that sealing state reaches the locking leak-stopping.

Description of drawings

Fig. 1 is the side cutaway view of the utility model.

Figure 1A is the partial enlarged drawing of the utility model first figure.

Fig. 2 is a side cutaway view of commonly using swivel joint.

Fig. 2 A is the partial enlarged drawing of Fig. 2.

Fig. 3 is another side cutaway view of commonly using swivel joint.

Fig. 3 A is the partial enlarged drawing of Fig. 3.

Description of reference numerals: 1-pedestal; The 10-passage; The 101-opening; 11-encircles protuberance; The 111-conjugate foramen; The 12-locating column; The 2-blocking device; 21-floats stationary ring; 211-annular resisting part; The 212-perforation; 22-passes ring; The 222-pushing part; The 23-spring; 24-O type ring; The 25-hard washer; The 251-stop surface; The 3-running shaft; The 30-passage; The 31-embedding part; The moving envelope ring of 32-; 33-O type ring; The 34-bearing; The A-pedestal; The A0-passage; A1-rank portion; B-floats stationary ring; The B1-annular groove; B2-O type ring; The B3-throw-out collar; The B4-spring; The C-running shaft; The C0-passage; The C1-pivoted loop; C2-O type ring.

Embodiment

For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof combine accompanying drawing to explain in detail as follows with regard to the preferred embodiment of the utility model at present, so that function of the utility model and characteristic are understood fully.

See also shown in Fig. 1 and the 1A; Be respectively side cutaway view of the utility model and the partial enlarged drawing of Fig. 1, find out that by knowing among the figure the utility model includes pedestal 1, blocking device 2 and running shaft 3; Existing with the utility model main member and characteristic details as after, wherein:

The hollow of this pedestal 1 has the path 10 that can supply fluid flow; And two ends places be formed with opening 101 at least in path 10; And the opening 101 inboard places that pedestal 1 is positioned at front end are provided with the ring protuberance 11 that can supply blocking device 2 location axial displacements; Its ring protuberance 11 vertical side wall places then are concaved with a plurality of conjugate foramens 111 of the shape that is distributed in distance, and in conjugate foramen 111, all are equipped with a locating column 12.

This blocking device 2 includes floating stationary ring 21, passes ring 22 and spring 23; But be formed with block on wherein floating stationary ring 21 outer ring surfaces in ring protuberance 11 places and be the annular resisting part 211 of terrace shape; And be socketed with two O type rings 24 on the annular resisting part 211 and be positioned at the hard washer 25 of 24 on O type ring; And be formed with flat stop surface 251 in hard washer 25 both sides places; Be provided with in annular resisting part 211 outsides again and can supply locating column 12 to embed a plurality of perforation 212 that fix, be axially arranged with restraining groove 221, and be provided with in the opposite side place of restraining groove 221 and be the pushing part 222 of encircling convex and pass ring 22 1 side places; And spring 23 both sides places is positioned to pass in the restraining groove 221 of ring 22 the path 10 internal face place with pedestal 1 respectively, supports to arrive in passing ring 22 axial activity displacements in order to elasticity.

The hollow of this running shaft 3 is to have to supply the passage 30 of fluid flow in pedestal 1 inside; And be provided with in passage 30 1 side places and be the terrace shape and can supply envelope ring 32 to combine the embedding part 31 of location; And be provided with O type ring 33 between moving envelope ring 32 and the embedding part 31 internal face places, on running shaft 3 outer ring surfaces, then be arranged with the bearing 34 that at least one can assist running shaft 3 to rotate in addition.

Moreover; Above-mentioned O type ring 24 can be made by the soft flexible material of a rubber, silica gel or other tool; And make a specific embodiment of hard washer 25 the bests made by stainless steel, copper, iron or other metal material; And the thickness of this hard washer 25 can be 0.5 millimeter, 0.8 millimeter, 1.0 millimeters etc.; And the stop surface 251 at hard washer 25 both sides places is preferred embodiment for being a smooth shape, but when practical application, and its stop surface 251 also can be planar, stepped or other equivalent shapes of single order and design; Thereby make hard washer 25 have enough support structure intensity; And block prevents its overlapping compression and influences or lose original function that the simple and easy modification and the equivalent structure that use the utility model specification and accompanying drawing content to do such as change, and all should in like manner be contained in the claim of the utility model between two O type rings 24.

When the utility model in when assembling; Earlier bearing 34 sockets are positioned on the embedding part 31 that running shaft 3 is the terrace shape; And make O type ring 33 and moving envelope ring 32 insert and be sticked in the place, end of running shaft 3 in regular turn; Can receive the extruding generation resiliently deformable of moving envelope ring 32 through O type ring 33, make between envelope ring 32 and running shaft 3 ends and form sealing state, again 3 opening 101 places by pedestal 1 front end of running shaft penetrated in it; And utilize bearing 34 to be pivoted to be one in the path 10 that is positioned pedestal 1 and freely rotate; And after making envelope ring 32 end faces contact on the floating stationary ring 21 of blocking device 2, just can push against in passing on the ring 22, two O type rings 24 received pass ring 22 to produce resiliently deformables with hard washer 25 extruding by spring 23; And can reach the effect of locking leak-stopping in floating stationary ring 21 with moving envelope ring 32 mutual conflicts by passing ring 22 pushing and pressing O type rings 24 interlocks, organize the swivel joint that structure forms the utility model thus.

The swivel joint of the utility model can be applicable to industries such as weaving, papermaking, rubber, plastic cement and chemistry and produces machine tool conveyance fluid in rotation; The connecting tube (not shown) that fluid can be connected by opening 101 places of pedestal 1 rear end flows in the path 10; And after the passage 30 through blocking device 2 and running shaft 3 is delivered to opening 101 places of front end, is delivered in the board by the connecting tube (not shown) that is connected on the running shaft 3 again and uses.

And in the process of spring 23 pushing and pressing of blocking device 2; Can come elasticity to support to arrive in through spring 23 in passing on the ring 22; Thereby can average force and be difficult for producing skew or the situation of rocking takes place; And make and pass ring 22 and be the pushing part 222 of encircling convex and push against after on the O type ring 24 wherein; Can on the flat stop surface 251 of hard washer 25, form support structure and isolation by O type ring 24 blocks; In order to prevent to influence or lose the function of original single O type ring 24 with another O type ring 24 pressed and overlapped compression deformations; Make two O type rings 24 can receive the pushing part 222 of passing ring 22, the stop surface 251 of hard washer 25 and the mutual extrusion that floating stationary ring 21 is the annular resisting part 211 of terrace shape respectively and produce uniform resiliently deformable; And then but the micro gap of the floating stationary ring 21 of complete closed and 11 generations of ring protuberance of pedestal 1 forms the effect that sealing state reaches the locking leak-stopping, and can between two O type rings 24, form support structure and isolation through hard washer 25 blocks, the situation generation of leaking when preventing that the 24 overlapping compressions of two O type rings from causing fluid flow because of permanent deformation or micro gap that material ageing produced; Guarantee single O type ring 24 original sealing leak-stopping functions and durable in use by this, more can effectively prolong whole service life.

Above-mentioned detailed description is for explaining to a kind of preferred possible embodiments of the utility model; Yet; This embodiment is not the scope in order to the claim that limits the utility model; All other do not break away from the equalization of being accomplished under the skill spirit that the utility model discloses to be changed and modifies change, all should be contained in the claim that the utility model contains.

In sum, the improvement of the utility model rotary joint structure can reach its effect and purpose really, so the utility model really is the excellent model utility of a practicability, meets the application important document of novel patent in fact, so file an application in accordance with the law.

Claims

1. rotary joint structure improvement; Comprise: pedestal, blocking device and running shaft; Wherein said pedestal inside has the passage that supplies fluid flow, and the ring protuberance that is provided with the floating stationary ring location axial displacement that supplies blocking device in the inboard place of said passage, then is pivoted with the running shaft with moving envelope ring in the said passage of said pedestal; And the said floating stationary ring of said moving Feng Huanyu is conflicted each other and is formed locking leak-stopping state, it is characterized in that:

2. rotary joint structure improvement according to claim 1; It is characterized in that; The said passage of said pedestal place, two ends at least is formed with opening; And said pedestal is positioned at the inboard place of front opening and is provided with said ring protuberance; And be concaved with the conjugate foramen that supplies locating column to wear in said ring protuberance vertical side wall place, and the said annular resisting part block on the said floating stationary ring outer ring surface of blocking device is in said ring protuberance place, and said annular resisting part outside is provided with and supplies locating column to embed a plurality of perforation that fix.

3. rotary joint structure improvement according to claim 1 is characterized in that, the place, said hard washer both sides of said blocking device is formed with flat and supplies said O type ring block stop surface on it.

4. rotary joint structure improvement according to claim 1; It is characterized in that; The said passing of said blocking device encircles a side place and is provided with restraining groove; And be provided with in the opposite side place of said restraining groove and be the ring convex and can push against the pushing part of O type ring block on said hard washer, and place, said spring both sides is positioned in the said restraining groove of said passing ring the said vias inner walls face place with said pedestal respectively.

5. rotary joint structure improvement according to claim 1 is characterized in that the hard washer of said blocking device is made by stainless steel, copper or iron.

6. rotary joint structure improvement according to claim 1 is characterized in that the thickness of the said hard washer of said blocking device is 0.5 millimeter, 0.8 millimeter or 1.0 millimeters.

7. rotary joint structure improvement according to claim 1; It is characterized in that; Said interior of rotating shaft has passage; And be provided with in said passage one side place and be the terrace shape and supply said moving envelope loops to close the embedding part of location, and be provided with said O type ring between the said embedding part internal face of the said moving Feng Huanyu place, and on said running shaft outer ring surface, be arranged with the bearing that at least one auxiliary running shaft rotates.