CN203500717U

CN203500717U - Rotary joint

Info

Publication number: CN203500717U
Application number: CN201320531422.2U
Authority: CN
Inventors: 何道锋
Original assignee: Fuding Electronic Technology Jiashan Co Ltd; Hongzhun Precision Tooling Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Fuding Electronic Technology Jiashan Co Ltd; Hongzhun Precision Tooling Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2013-08-29
Filing date: 2013-08-29
Publication date: 2014-03-26
Anticipated expiration: 2023-08-29

Abstract

The utility model discloses a rotary joint, which comprises a shell, a rotary piece, a bearing, a connecting piece and a plurality of elastic pieces, wherein the shell comprises a channel part and an accommodating part; the channel part is provided with a connecting hole; the accommodating part is provided with an accommodating cavity communicated with the connecting hole; one end of the rotary piece is accommodated in the accommodating cavity; the bearing is sleeved on the rotary piece to rotationally connect the rotary piece to the shell; a step surface is formed at the joint between the connecting hole and the accommodating cavity; a plurality of accommodating grooves are formed uniformly around the circumference of the connecting hole on the step surface of the channel part; the connecting piece comprises a body, a connecting part and a blocking part; the body is pressed against the end face of the rotary piece; the connecting part projects from one end of the body and is accommodated in the connecting hole; the blocking part projects from the circumference of the body and is used for blocking the accommodating grooves; the elastic pieces are accommodated in corresponding accommodating grooves respectively, and are pressed against the blocking part to hermetically connect the body to the rotary piece. The rotary joint is high in airtightness.

Description

Swivel joint

Technical field

The utility model relates to a kind of swivel joint, particularly a kind of swivel joint for flowing medium transmission.

Background technique

In industrial production, generally by swivel joint, flowing medium (liquid, oil, gas etc.) is transferred to rotating equipment from static pipeline.Swivel joint generally comprises housing, solid of rotation, bearing, link and spring.Bearing is rotationally connected with solid of rotation on housing.On housing and solid of rotation, offer passage, link is communicated with the passage of housing and solid of rotation, and coaxially arranges with housing and solid of rotation.Spring is contained in the passage of housing and is held on link to compress link and solid of rotation close contact.Yet when flowing medium is flowed through spring, high-velocity fluid medium impact spring easily causes turbulent flow, make spring produce vibration, and then affect the sealing of link and revolving part.

Model utility content

In view of foregoing, be necessary to provide preferably swivel joint of a kind of sealing.

A kind of swivel joint, it comprises housing, revolving part, bearing and link, this housing shaft is to the host cavity that offers attachment hole and communicate with this attachment hole, this revolving part one end is contained in this host cavity, and this bearing housing is located on this revolving part and is contained in this host cavity so that this revolving part is rotationally connected with on this housing.The joint of this attachment hole and this host cavity is formed with step surface, this housing is provided with a plurality of containing grooves around this attachment hole periphery is spaced apart on this step surface, this link comprises body, joint and blocking part, this body is held on the end face of this revolving part, this joint protrudes out and is formed at this body one end and is contained in this attachment hole, this blocking part protrudes out and is formed on this body periphery and keeps off and establish the plurality of containing groove, this swivel joint also comprises a plurality of elastic components, the plurality of elastic component is contained in respectively in corresponding containing groove and compresses this blocking part this body is sealedly attached on this revolving part.

Further, this channel part offers accepting groove on this step surface, on this blocking part, offer the fixed hole corresponding with this accepting groove, this swivel joint also comprises locating piece, and the two ends of this locating piece are contained in respectively in this accepting groove and this fixed hole to prevent that this link from rotating.

Further, this swivel joint also comprises seal ring, and sealing snare is located on this joint and is contained in this attachment hole to seal this channel part and this link.

Further, this host cavity comprises the first cavity and the second cavity, and this second cavity communicates with this attachment hole, and this bearing is contained in this first cavity, the joint of this second cavity and this attachment hole forms this step surface, on the sidewall of this second cavity, offers outfall.

Further, this swivel joint also comprises two separators, and these two separators are fixedly contained in this second cavity and gear is established this outfall, between these two separators, are formed with the gap communicating with this outfall.

Further, this swivel joint also comprises separator, and this separator is fixedly contained in this second cavity and gear is established this outfall, is formed with the drain boles communicating with this outfall on this separator.

Further, the joint of this first cavity and this second cavity forms another step surface, this swivel joint also comprises a pair of stop member, one of them stop member is sheathed on this revolving part and this another step surface setting relatively, wherein another stop member is installed on the sidewall of this first cavity and around the perisporium setting of this first cavity, on this revolving part, protrude out and be formed with flange this another stop member setting relatively of extending along perisporium, one end of this bearing is held in this another step surface and this stop member, its the other end is held on this another stop member and this flange, so that this revolving part is rotationally connected with on this housing.

Further, this bearing is two, and this swivel joint also comprises lining, and this lining is held between two bearings.

Swivel joint of the present utility model, by a plurality of elastic components are installed in housing, are avoided making elastic component produce vibration because of the impact of flowing medium, and is utilized a plurality of elastic components to mortgage this link, thereby improve the sealing between link and solid of rotation.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of the utility model swivel joint.

Fig. 2 is the generalized section of swivel joint shown in Fig. 1.

Primary component symbol description

Swivel joint	100
		Housing	10
Channel part	12
		Attachment hole	124
Step surface	15、164
		Containing groove	156
Accepting groove	158
		Accommodation section	16
Host cavity	161
		The first cavity	1611
The second cavity	1613
		Fixed groove	162、24
Outfall	18
		Revolving part	20
Passage	22
		Flange	26
Bearing	30
		Lining	35
Stop member	40
		Link	50
Body	51
		Through hole	52
Joint	53
		Blocking part	54
Fixed hole	542
		Locating piece	60
Elastic component	70
		Seal ring	80
Separator	90
		Gap	92

Following embodiment further illustrates the utility model in connection with above-mentioned accompanying drawing.

Embodiment

See also Fig. 1 and Fig. 2, the swivel joint 100 of present embodiment comprises housing 10, revolving part 20, two bearings 30, lining 35, two stop members 40, link 50, locating piece 60, a plurality of elastic component 70, seal ring 80 and separators 90.The swivel joint 100 of present embodiment is for connecting static pipeline (not shown) and rotating equipment (not shown).

Housing 10 is roughly cylindric, and it comprises channel part 12 and accommodation section 16, and the diameter of channel part 12 is less than the diameter of accommodation section 16.Channel part 12 axially offers attachment hole 124.Accommodation section 16 axially offers host cavity 161.Host cavity 161 comprises that the first cavity 1611 and the second cavity 1613, the second cavitys 1613 that are interconnected are connected with attachment hole 124.The first cavity 1611, the second cavity 1613 and the coaxial setting of attachment hole 124 and diameter reduce successively.The joint of the first cavity 1611 and the second cavity 1613 forms annular step surface 164, the second cavitys 1613 and forms annular step surface 15 with the joint of attachment hole 124.Housing 10 is arranged with and is formed with a plurality of spaced containing groove 156 and the accepting groove 158 extending to channel part 12 on step surface 15, and a plurality of containing grooves 156 evenly arrange around the step surface 15 of attachment hole 124 peripheries.On the sidewall of the first cavity 1611 away from second cavity 1613 one end, be arranged with and be formed with the fixed groove 162 extending around the first cavity 1611 perisporiums.On the sidewall of the second cavity 1613, offer a plurality of outfalls 18.In present embodiment, the quantity of outfall 18 is two and is symmetrical arranged, and the quantity of containing groove 156 is three.The quantity that is appreciated that outfall 18 can be one or more than two, the quantity of containing groove 156 can be for two or more than three.

Revolving part 20 is roughly cylindric, and its one end is contained in the second cavity 1613, and its other end is given prominence to outside the first cavity 1611 and is connected with rotating equipment (not shown).Revolving part 20 axially connects and offers passage 22.On the periphery wall of revolving part 20 one end, be arranged with and be formed with annular fixed groove 24, side and the step surface 164 of fixed groove 24 are positioned in same level.On the periphery wall of revolving part 20 away from fixed groove 24 one end, protrude out and be formed with the flange 26 extending along revolving part 20 perisporiums, and the position of flange 26 is corresponding with the position of fixed groove 162.

Two stop members 40 are contained in respectively in fixed groove 162,24, and outside outstanding corresponding fixed groove.One of them stop member 40 is arranged in the first cavity 1611, and another part stop member 40 is arranged in the second cavity 1613.Stop member 40 in present embodiment is snap ring.

Two bearing 30 spacer sleeves are located on revolving part 20 and are contained in the first cavity 1611.Lining 35 is held between two bearings 30, so that two bearings 30 are arranged at intervals on revolving part 20.The end face of the bearing 30 of contiguous the second cavity 1613 is held on a stop member 40 and step surface 164.End face away from the bearing 30 of the second cavity is held on another stop member 40 and flange 26, so that bearing 30 is fixedly arranged on housing 10 and revolving part 20 relatively, thereby revolving part 20 is rotationally connected with on housing 10.Be appreciated that lining 35 can omit, can adopt other links that two bearings 30 are linked together.The quantity of bearing 30 can be for one or more than two.When the quantity of bearing 30 is one, its one end is held on a stop member 40 and step surface 164, and its other end is held on another stop member 40 and flange 26.

Link 50 is annular, and its one end is contained in attachment hole 124, and its other end is held on the end face of revolving part 20, to be communicated with attachment hole 124 and passage 22.Link 50 comprises body 51, joint 53 and blocking part 54, and runs through body 51 and joint 53 offers the through hole 52 communicating with attachment hole 124 and passage 22.Body 51 is held on the end face of revolving part 20.Joint 53 protrudes out and is formed at body 51 one end and is contained in attachment hole 124.Blocking part 54 is outwards protruded out and forms by body 51 peripheries, and it is circular.Blocking part 54 gear is established containing groove 156, and offers and be formed with the fixed hole 542 being oppositely arranged with accepting groove 158.

One end of locating piece 60 is fixedly contained in accepting groove 158, and its other end is fixedly contained in fixed hole 542, so that link 50 is radially fixedly arranged on housing 10, prevents that link 50 from rotating.In present embodiment, locating piece 60 is locating stud.

Elastic component 70 is contained in corresponding containing groove 156, and its two ends are held in respectively on blocking part 54 and channel part 12.Elastic component 70 compresses blocking part 54 is sealed on revolving part 20 link 50.In present embodiment, elastic component 70 is spring, and its quantity is three.Three spaced elastic components 70 press on respectively on link 50, can improve the sealing of link 50.Be appreciated that elastic component 70 also can be other elastic elements such as resilient sleeve, its quantity can be two or be greater than three.

Seal ring 80 is sheathed on the joint 53 of link 50, and is contained in attachment hole 124, for seal connector 50 and housing 10.

Two separators 90 are contained in the second cavity 1613 and keep off and establish outfall 18.Between two separators 90, be formed with annular gap 92, it communicates with outfall 18.Two separators 90 are fixedly arranged on the sidewall of the second cavity 1613, for prevent foreign body through outfall 18(as the pipeline on outfall 18) touch link 50, affect the sealing of 20 of link 50 and revolving parts.In present embodiment, separator 90 is ring-type, and it is around the perisporium setting of the second cavity 1613.The quantity that is appreciated that separator 90 can be one, offers a plurality of drain boleses that communicate with outfall 18 simultaneously on separator 90.The quantity of separator 90 also can be greater than two, between adjacent two separators 90, is formed with gap 92.

During use, housing 10 is connected with static pipeline, revolving part 20 is connected with rotating equipment, pipeline (not shown) and outfall 18 are joined.Flowing medium flows in rotating equipment by static pipeline, attachment hole 124, through hole 52 and passage 22.When link 50 or seal ring 80 inefficacy, flowing medium leaks in the second cavity 1613, then flow to outfall 18 and then flow in external pipe via separator 90, thereby reclaims the flowing medium of revealing, and reduces wastage of material, cost-saving.

Swivel joint 100 of the present utility model is by being installed in elastic component 70 in housing 10, avoid making elastic component 70 produce vibration because of the impact of flowing medium, and a plurality of elastic components 70 mortgage links 50 are set, thereby improve the sealing of 20 of link 50 and revolving parts; Separately, by separator 90 gear, establish outfall 18, touch link 50 when preventing pipe laying and affect the sealing of link 50, thus the sealing of assurance link 50.

In addition, those skilled in the art also can do other and change in the utility model spirit, and these variations of doing according to the utility model spirit certainly, all should be included in the claimed scope of the utility model.

Claims

1. a swivel joint, it comprises housing, revolving part, bearing and link, this housing shaft is to the host cavity that offers attachment hole and communicate with this attachment hole, this revolving part one end is contained in this host cavity, this bearing housing is located on this revolving part and is contained in this host cavity so that this revolving part is rotationally connected with on this housing, it is characterized in that: the joint of this attachment hole and this host cavity is formed with step surface, this housing is provided with a plurality of containing grooves around this attachment hole periphery is spaced apart on this step surface, this link comprises body, joint and blocking part, this body is held on the end face of this revolving part, this joint protrudes out and is formed at this body one end and is contained in this attachment hole, this blocking part protrudes out and is formed on this body periphery and keeps off and establish the plurality of containing groove, this swivel joint also comprises a plurality of elastic components, the plurality of elastic component is contained in respectively in corresponding containing groove and compresses this blocking part this body is sealedly attached on this revolving part.

2. swivel joint as claimed in claim 1, it is characterized in that: this housing offers accepting groove on this step surface, on this blocking part, offer the fixed hole corresponding with this accepting groove, this swivel joint also comprises locating piece, and the two ends of this locating piece are contained in respectively in this accepting groove and this fixed hole to prevent that this link from rotating.

3. swivel joint as claimed in claim 1, is characterized in that: this swivel joint also comprises seal ring, and sealing snare is located on this joint and is contained in this attachment hole to seal this housing and this link.

4. swivel joint as claimed in claim 1, it is characterized in that: this host cavity comprises the first cavity and the second cavity being interconnected, this second cavity communicates with this attachment hole, this bearing is contained in this first cavity, the joint of this second cavity and this attachment hole forms this step surface, on the sidewall of this second cavity, offers outfall.

5. swivel joint as claimed in claim 4, it is characterized in that: this swivel joint also comprises two separators, these two separators are fixedly contained in this second cavity and gear is established this outfall, between these two separators, are formed with the gap communicating with this outfall.

6. swivel joint as claimed in claim 4, is characterized in that: this swivel joint also comprises separator, and this separator is fixedly contained in this second cavity and gear is established this outfall, is formed with the drain boles communicating with this outfall on this separator.

7. swivel joint as claimed in claim 4, it is characterized in that: the joint of this first cavity and this second cavity forms another step surface, this swivel joint also comprises a pair of stop member, one of them stop member is sheathed on this revolving part and this another step surface setting relatively, wherein another stop member is installed on the sidewall of this first cavity and around the perisporium setting of this first cavity, on this revolving part, protrude out and be formed with flange this another stop member setting relatively of extending along perisporium, one end of this bearing is held in this another step surface and this stop member, its the other end is held on this another stop member and this flange, so that this revolving part is rotationally connected with on this housing.

8. swivel joint as claimed in claim 7, is characterized in that: this bearing is two, and this swivel joint also comprises lining, and this lining is held between two bearings.