CN201162910Y

CN201162910Y - Seal pipe joint and its housing

Info

Publication number: CN201162910Y
Application number: CNU2007200761099U
Authority: CN
Inventors: 凌坚昌
Original assignee: Suzhou Industrial Park Strabo Pipe Couplings Co Ltd
Current assignee: Suzhou Jointand Pipe Couplings Co., Ltd.
Priority date: 2007-11-13
Filing date: 2007-11-13
Publication date: 2008-12-10
Anticipated expiration: 2017-11-13

Abstract

The outer shell of the pipe connector in the prior art adopts an integral type structure, and is provided with small openings only at the positions of the end opening and the axial opening; thus the connection of the bent pipes and more than three pipes can not be realized. The utility model provides an improved pipe connector and a casing thereof; wherein, the casing comprises an outer shell and a clamping device; wherein, the outer shell comprises a polarity of separate type outer shell components, and is provided with a plurality of port parts. The interior cross-sections of the port parts of the outer shell are round, and are formed by the interior cross-sections of part of or the whole of a plurality of the separate type outer shell components. The clamping devices are used for clamping the outer shell components to form the outer shell and the radial inward holding forces at each port part. The pipe connector comprises the casing and a sealing ring. the installation of various kinds of sealing rings of the pipe connectors is realized in the pipe connector of the utility model through the adoption of the separate type outer shell components, and thus the problem that the pipe connectors of the prior art can not be used for the connection of bent pipes and more than three pipes is solved.

Description

A kind of sealed pipe joint and housing thereof

Technical field

The utility model relates to a kind of pipe connection device, relates in particular to a kind of pipe joint and housing thereof.

Background technique

In pipeline construction, it is very general application demand that pipeline connects.At present, people generally use pipe joint to carry out the pipeline connection.

The pipe joint of prior art comprises shell, securing means and seal ring.Wherein shell adopts monolithic construction, and shell has the axially open of a predetermined gap.Seal ring is positioned at this shell, and wherein the outer wall of seal ring is close to the inwall of this shell.Securing means is positioned on this shell, be used for fastening this shell, when securing means tightens, the gap at the axially open place of shell dwindles, make shell form radially inner chucking power to the seal ring in the shell, thereby make shell fastened, and and then make the inwall of seal ring shrink the outer wall realization sealing that is placed on its inner pipe with clamping.

But as mentioned above, what the shell of the pipe joint of prior art adopted is monolithic construction, pipe joint is only at port and axially open place opening, and the width of the predetermined gap at axially open place does not enough make seal ring be placed in the pipe joint shell by axially open, therefore, the seal ring of the pipe joint of prior art can only be placed the inlet pipe joint shell from the port openings of pipe joint shell.

And connect when pipe joint is used to realize bend pipe, and during the connection of three above pipes, its seal ring shape is corresponding also to be curved connection for bbreather pipe profile, multiple way union profile, under these situations, the opening section of the port of pipe joint is less than the part intermediate cross-section of seal ring, so seal ring can't be positioned in the shell of pipe joint.And when the connecting tube that is used for different bores connects, because the bore of a port of the pipe joint of different bores is less than the bore of another one port, therefore, the pipe joint that is used for different bore pipes connections of prior art is when being placed on the pipe joint shell with seal ring, can only unidirectionally assemble, in use caused inconvenience.

So the pipe joint of prior art can't be used for the bend pipe connection and the pipe more than three connects.And in the connection that is used for different bore pipes, the pipe joint of prior art can only carry out unidirectional installation, uses inconvenience.

The model utility content

In order to overcome the above-mentioned shortcoming of prior art, first purpose of the present utility model is to provide a kind of improved pipe joint housing, and this housing comprises shell and clamp device; Wherein, shell comprises a plurality of separated type case members, and has a plurality of port part, and the interior cross section of each port part of shell is circular, and cross sections are by the part or all of case member of a plurality of separated type case members interior section constitution in this port part in these; Described a plurality of clamp device is used for fastening described a plurality of case members to form shell and to form radially inner chucking power in each port part.

Use this pipe joint housing can be easily the seal ring of the pipe joint of different shape to be placed in this pipe joint housing, so that using the pipe joint of this pipe joint housing can satisfy bend pipe connects, different bore pipes connect, and the pipe joint of the prior aries such as connection of three the above pipes pipeline connection request that can't satisfy.

Second purpose of the present utility model is to provide a kind of improved pipe joint, thereby realizes that bend pipe connects, and different bore pipes connect, and three functions such as above pipe connection.

For realizing second purpose of the present utility model, according to second aspect of the present utility model, a kind of pipe joint is provided, comprise housing and seal ring, its middle shell comprises shell and clamp device, described seal ring is nested in the described shell, the seal ring port position is in the outer shell end oral area, and the inwall of the outer wall of seal ring port part and outer shell end oral area leans, the port part of described seal ring is provided with radially the seal lip ring to inner process, when the fastening shell of clamp device, in the chucking power that outer casing end produces the seal ring port part is shunk and make seal lip ring tighten the outer wall realization sealing of the connecting tube in the seal ring, described housing is the housing that provides according to the utility model first aspect.

Because shell of the present utility model has adopted a plurality of detachable parts, when mounted when port part can't be passed through seal ring, the case member of pipe joint can be taken apart, and after the case member after will being separated from each other surrounds seal ring, with securing means case member is tightened to shell again, thereby seal ring is installed into shell.

Therefore, after adopting detachable case member, the shell of pipe joint of the present utility model can allow the seal ring of pipe joint to be placed in the shell by opening, realized the installation of seal ring of the pipe joint of different shape, the seal ring of for example seal ring of the seal ring of bend pipe, reducer pipe, and many siphunculus.Thereby the pipe joint that has solved prior art can not be used for bend pipe connect be connected with pipe more than three and the connection that is used for different bore pipes can only unidirectional assembling problem.

Description of drawings

By reading the detailed description of doing with reference to the following drawings that non-limiting example is done, it is more obvious that other features, objects and advantages of the present utility model will become:

Fig. 1 is the exploded view according to the housing of 2 chips, the 45 degree bilateral pipe joints of a specific embodiment of the present utility model;

Fig. 2 a is the sectional view according to the seal ring of 2 chips, the 45 degree bilateral pipe joints of a specific embodiment of the present utility model;

Fig. 2 b is the zoomed-in view of border circular areas among Fig. 2 a;

Fig. 2 c is the stereogram according to the seal ring of 2 chips, the 45 degree bilateral pipe joints of a specific embodiment of the present utility model;

Fig. 3 is the constitutional diagram according to 2 chips, the 45 degree bilateral pipe joints of a specific embodiment of the present utility model;

Fig. 4 a is the exploded view according to the housing of 2 chips, the 90 degree bilateral pipe joints of another specific embodiment of the present utility model;

Fig. 4 b is the constitutional diagram according to 2 chips, the 90 degree bilateral pipe joints of another specific embodiment of the present utility model;

Fig. 5 a is the exploded view according to the housing of the reduction nipple of another specific embodiment of the present utility model;

Fig. 5 b is the constitutional diagram according to the reduction nipple of another specific embodiment of the present utility model;

Fig. 6 a is the exploded view according to the housing of the three-way union of another specific embodiment of the present utility model;

Fig. 6 b is the stereogram according to the seal ring of the three-way union of another specific embodiment of the present utility model;

Fig. 6 c is the sectional view according to the seal ring of the three-way union of another specific embodiment of the present utility model;

Fig. 6 d is the constitutional diagram according to the three-way union of another specific embodiment of the present utility model.

Embodiment

In order to understand the utility model better, the utility model is described in further detail below in conjunction with accompanying drawing.

Pipe joint of the present utility model comprises housing and seal ring two-part of pipe joint.Respectively housing and seal ring are described below.

At first, housing of the present utility model is described.Housing of the present utility model comprises shell and a plurality of clamp device.Wherein, this shell comprises a plurality of detachable case members, part or all of case member in these detachable case members is in the interior cross section of interior those port part of section constitution of each port part of shell, and the interior cross section of these formations all is circular, so that connect each connecting tube in port part.Those skilled in the art can need not the diameter that any creative work is determined the interior cross section of these ports according to the outer diameter of these connecting tubes, the conditions such as thickness of seal ring.

Have an axially extended gap between the adjacent shells parts in these separated type case members, this gap has a predetermined spacing on circumferential direction.And case member also is provided with the clamp device in this gap of a plurality of leaps, when clamp device clamps, the fastening described a plurality of case members of clamp device can constitute shell integral body, when clamp device clamps, form radially inner chucking power in each port part, this chucking power is applied on the seal ring of port, owing in the seal ring of port, be placed with connecting tube, and the outer wall of connecting tube is against the seal ring inwall, when seal ring shrinks, thereby seal ring inwall chucking connecting tube outer wall reaches sealing effect.

Wherein, the shell of the utility model pipe joint can have the port more than 2 or 2 according to different usage requirements, and each end stretches out a certain-length so that can connect connecting tube.Curve inwardly and form baffle plate extending radially inwardly predetermined length in port part at the part or all of detachable case member at each port part place of shell, when seal ring is placed in the shell of pipe joint, seal ring is fixed by baffle plate in the axial direction, can avoid seal ring to move at axial direction.Wherein, the length that extends radially inwardly of baffle plate should be less than the thickness of seal ring port part to avoid connecting tube and stopped by baffle plate and can't stretch into the seal ring port.

Then, seal ring is described.Seal ring of the present utility model is nested in the shell, the seal ring port position is in the outer shell end oral area, and the inwall of the outer wall of seal ring port part and outer shell end oral area leans, the port part of described seal ring is provided with radially the seal lip ring to inner process, when the fastening shell of clamp device, in the chucking power that outer casing end produces the seal ring port part is shunk and make seal lip ring tighten the outer wall realization sealing of the connecting tube in the seal ring.

In addition, between the baffle plate of seal ring end and shell, be provided with and have carrying secretly of inclination outer circumferential face, this end of carrying secretly is against described baffle plate, and the inclination outer circumferential face of carrying inclination exterior edge face and seal ring secretly leans, thereby seal ring is out of shape in the opening tightening process in enclosure axis promotes to carry secretly chucking connecting tube outer wall, thereby realize axial restraint seal ring.

Particularly, respectively with curved connection for bbreather pipe, reducing socket, and three-way union is that example is described is to be described further the utility model below with reference to Fig. 1～Fig. 6 d.

Followingly the curved connection for bbreather pipe of 45 degree according to employing two-part case member of a specific embodiment of the present utility model is described with reference to Fig. 1～Fig. 3.Wherein, Fig. 1 is the exploded view of the housing of the curved connection for bbreather pipe of this 45 degree, Fig. 2 a is the sectional view that 45 degree of this specific embodiment are bent the seal ring of connection for bbreather pipe, Fig. 2 b is the zoomed-in view of border circular areas among Fig. 2 a, Fig. 2 c is the stereogram that 45 degree of this specific embodiment are bent the seal ring of connection for bbreather pipe, and Fig. 3 is the constitutional diagram of the housing of the curved connection for bbreather pipe of this 45 degree.

The curved connection for bbreather pipe of 45 degree of present embodiment comprises housing and seal ring.Wherein, seal ring is nested in the described shell, and the seal ring port position is in the outer shell end oral area, and the inwall of the outer wall of seal ring port part and outer shell end oral area leans.

Further, the housing of the curved connection for bbreather pipe of this 45 degree comprises shell and clamp device two-part.

Wherein shell comprises two separable case members.These two separable case members are distribution up and down, be respectively to go up case member 11 and lower casing parts 12, between these two adjacent case members, promptly go up between case member 11 left ends and lower casing parts 12 left ends and between last case member 11 right-hand members and lower casing parts 12 right-hand members and all leave one in the gap that upwards has a predetermined spacing week.Be first gap 16 and second gap 17 of going up among Fig. 3 between case member 11 and the lower casing parts 12.In addition, in the port part of shell, last case member 11 curves inwardly and is extending radially inwardly first baffle plate 111 of a predetermined length, and lower casing parts 12 also curve inwardly and extend radially inwardly the second baffle 121 of a predetermined length in port part.

This pipe joint shell also comprises two baffle plate bridges, i.e. the first baffle plate bridge 13 and second baffle bridge 14, and these two baffle plate bridges are installed in this gap location, are used to seal this gap.Particularly, one end of each baffle plate bridge is connected with the axially open of a case member of this gap one side is inboard, for example fixedly connected with the inboard of lower casing parts 12 of first gap, 16 downsides in the lower end of the first baffle plate bridge 13, fixedly connected with the inboard of last case member 11 of 17 tops, second gap in the upper end of second baffle bridge 14, this fixedly connected mode can be to be welded to connect.The other end of each baffle plate bridge is a free end, can be when clamp device tightens up the axially open of pipe joint, inwall along the case member of this predetermined gap opposite side moves, thereby do not influence the clamp operation of pipe joint, and when clamp device clamped, the baffle plate bridge can produce chucking power to seal ring in interstitial site.

The housing of the curved connection for bbreather pipe of 45 degree as shown in Figure 1 also comprises clamp device, below with reference to Fig. 1 and Fig. 3 the clamp device that uses the ledge arrangement on the curved connection for bbreather pipe of above-mentioned 45 degree is specifically described as example.

Pipe joint structure among Fig. 1, a pair of lug 15 that is provided with axial distribution and aims in a circumferential direction in the both sides, gap of each port of case member.Wherein, every pair of lug 15 is provided with two through holes of aiming in a circumferential direction 151.Also comprise a latch 152 jointly with ground, both sides, a gap clamp device.Wherein latch 152 is provided with the through hole of aiming at mutually with through hole 151.In addition, each clamp device also comprises the bolt 153 that passes through hole on every pair of lug.

During installation, as shown in Figure 2, bolt 153 is passed through hole on through hole 151 and the latch 152, and by tightening this bolt, shell is shunk on the circumferencial direction of described port part, to form radially inner chucking power, be placed on the interior seal ring port part contraction of pipe joint shell and then make the outer wall of the connecting tube that seal lip ring chucking seal ring is interior realize sealing thereby make in this port part.

For can the axial restraint seal ring, present embodiment can also comprise to be carried secretly, this is carried secretly between described baffle plate and described seal ring end, this is carried secretly has the inclination outer circumferential face, seal ring port part in the present embodiment also has the inclination exterior edge face, this inclination outer circumferential face of carrying inclination exterior edge face and seal ring secretly leans, and an end of carrying secretly is against baffle plate.When seal ring in the opening tightening process deformation can take place in enclosure axis, seal ring can promote to carry secretly to port direction to move in the axial direction, because cassette tape one end is against baffle plate, and the inclination outer circumferential face of carrying inclination exterior edge face and seal ring secretly leans, thereby it is following in the promotion of seal ring, cassette tape plane of inclination and axially angle increase, thus cassette tape chucking connecting tube outer wall reduces the relative displacement of connecting tube and pipe joint.

Seal ring in the present embodiment is nested in the shell, the seal ring port position is in the shell of port part, and the inwall of the outer wall of seal ring port part and outer shell end oral area leans, and below in conjunction with Fig. 2 a, Fig. 2 b and Fig. 2 c the seal ring in the present embodiment is specifically described.Wherein, Fig. 2 a is the sectional view of the seal ring of present embodiment, and Fig. 2 b is the zoomed-in view of border circular areas among Fig. 2 a, and Fig. 2 c is the stereogram of the seal ring of present embodiment.

The seal ring end of present embodiment comprises seal lip ring, supporting portion, stress buffer chamber and pressure compensation channel.

Particularly, the port part of the seal ring of present embodiment is provided with radially the seal lip ring 22 to inner process, when clamp device 15 fastening shells, thereby the outer wall of the connecting tube in the chucking power that outer casing end produces makes seal lip ring 22 chucking seal rings is realized sealing, wherein need to prove the predetermined length that the thickness of seal ring port part should extend radially inwardly greater than described baffle plate, so that when guaranteeing that connecting tube stretches in the seal ring, do not stopped by baffle plate.In addition, the exterior edge face 21 of seal ring port part for skewed in case with carry secretly the inclination exterior edge face mutually against.

The supporting portion of the seal ring in the present embodiment comprises first supporting portion 23 and second supporting portion 24.First supporting portion 23, second supporting portion 24 and seal lip ring 22 axially are provided with successively from inside to outside.And described seal lip ring 22 roots are provided with the stress buffer chamber 25 that distributes along circumferentially.25 places are provided with pressure compensation channel 26 in abutting connection with the stress buffer chamber, and pressure compensation channel 26 is connected with described pressure compensation channel 26, and stress buffer chamber 25 is spherical structures in the present embodiment, and pressure compensation channel 26 axially runs through first supporting portion.But those skilled in the art also can adopt the stress buffer chamber and the pressure compensation channel of other structures.After clamp device tightens up, seal lip ring 22 extrusions, medium diffuses to stress buffer chamber 25 by pressure compensation channel 26 in the pipe, make instantaneous stress very fast along stress buffer chamber 25 to around transmit, thereby reduce the stress of seal ring.

The use of seal lip ring makes pipe joint of the present utility model can reach self-packing effect.The setting of stress buffer chamber and described pressure compensation channel has then increased the anti-pressure ability of pipe joint of the present utility model, has also increased the working life of pipe joint.

In addition, the curved connection for bbreather pipe of the degree of 45 in the present embodiment can also be made the part modification according to actual conditions.Be that example is done explanation with the change in shell mechanism, clamp device and gap respectively below.

At first, outside the pipe joint shell mechanism of two case members shown in Figure 1, the pipe joint shell in the present embodiment also can adopt the shell mechanism of 3 above case members.

For example, the pipe joint housing among Fig. 1 can also adopt 3 slice structures.In this case, shell comprises 3 detachable case members, port part at shell, case member curves inwardly and at the baffle plate that extends radially inwardly one first predetermined length partly or completely, and between per two adjacent case members, all leave a gap that on circumferential direction, has a predetermined spacing.All be provided with the baffle plate bridge that is used to seal this predetermined gap at each predetermined gap place.Particularly, one end of each baffle plate bridge is fixedlyed connected with the inwall of axially open one side of a case member of this predetermined gap one side, this Placement can be to be welded to connect, the other end of baffle plate bridge is a free end, can be when clamp device tightens up the axially open of pipe joint, inwall along the case member of this predetermined gap opposite side moves, thereby does not influence the clamp operation of pipe joint.

Secondly, the clamp device in the utility model can also adopt the clamp device structure of flexible metal bar except ledge arrangement.

The clamp device of this flexible metal bar structure comprise have two crooked in the same way and have through hole afterbody flexible metal bar and can pass the bolt of the through hole of described two afterbodys.The flexible metal bar clamp device of this kind is arranged at the pipe joint outer cover port.When installing, described flexible metal bar is around described a plurality of case members, wherein the lead to the hole site on two bandy afterbodys is aimed at mutually, and bolt passes two afterbody through holes, by tighting a bolt described a plurality of case members is carried out fastening and forms chucking power at outer cover port.

Except the clamp device of ledge arrangement and flexible metal bar structure, those skilled in the art also can be as required, without any creative work the clamp device of other structures is applied to the utility model, as the clamp device of the housing of the utility model pipe joint to carry out fastening to described a plurality of case members and to form chucking power at outer cover port.

In addition, between two adjacent case members of the curved connection for bbreather pipe shell of the degree of 45 in the present embodiment, except predetermined gap is set, also can adopt other Placement, for example, same one side of last case member 11 and lower casing parts 12 is provided with a predetermined gap, buckle and buckle the hole Placement in the another side employing, particularly, can buckle the hole in a side setting of last case member 11, and buckle in the corresponding position setting of lower casing parts 12, connect the hole of passing on the case member 11 that buckles that buckles on the case member 12 at present, to realize being connected of case member 12 and case member 11.In addition, be provided with a baffle plate bridge, be used to seal this predetermined gap at the predetermined gap place on one side of last case member 11 and lower casing parts 12.One end of this baffle plate bridge is fixedlyed connected with the inwall of axially open one side of a case member of this predetermined gap one side, and the other end is a free end.When clamp device tightened up the axially open of pipe joint, the free end of baffle plate bridge can move along the inwall of the case member of the opposite side of this predetermined gap, and shell is shunk.Need to prove that pipe joint still needs to keep at least one predetermined gap to satisfy the requirement that the utility model shell can shrink.

Elbow of the present utility model can also be applicable to the elbow of various angles except the curved connection for bbreather pipe of 45 degree.Below in conjunction with Fig. 4 a Fig. 4 c, with 2 slice structures 90 the degree curved connections for bbreather pipe be that specific embodiment describes.Fig. 4 a is the exploded view of the housing of the curved connection for bbreather pipe of 90 degree in the present embodiment.Wherein, the last case member 41 of the curved connections for bbreather pipe of the lower casing parts 42 of the curved connections for bbreather pipe of these 90 degree and these 90 degree, two baffle plate bridges be in the 3rd baffle plate bridge 43 and the 4th baffle plate bridge 44 and the outer clamp device 45 the 3rd latch 452 and in step up the 4th latch 462 in the device 46, all become the angle of 90 degree, to constitute the housing of these 90 curved connections for bbreather pipe of spending.In addition, shown in Fig. 4 c, the angle of the seal ring of the curved connection for bbreather pipe of these 90 degree also is 90 degree, and the port design of seal ring is identical with the port design of the seal ring of the curved connection for bbreather pipe of 45 degree.Other structures of the curved connection for bbreather pipe of 90 degree are identical with the above-mentioned curved siphunculus of 45 degree.The stereogram of the curved connection for bbreather pipe of the degree of 90 after the combination is shown in Fig. 4 b.

For the elbow of other angles, those skilled in the art can realize and need not other any creative works by changing the angle angle of its case member, clamp device and baffle plate bridge and seal ring.For the elbow of 3 above case member structures, those skilled in the art also can realize and need not any creative work by the quantity of increase case member and the quantity of predetermined gap.

In addition, because the different situation of bore of two connecting tubes that the curved connection for bbreather pipe of existence is connected in the practical application, the bore of two ports of curved connection for bbreather pipe of the present utility model can be different.Describe for convenient, below with reduction nipple, promptly angle is that the elbow of the different bores of 180 degree is an example, and 5a and Fig. 5 b in conjunction with the accompanying drawings describe the pipe joint of different bores.

Because the bore difference of the connecting tube that two ports in the present embodiment will connect, the interior cross section that the two end part of the reduction nipple shell in the present embodiment adopt the connecting tube external diameter that is connected with this end to be complementary respectively, thereby in the present embodiment, the radius in the interior cross section of the radius in the interior cross section of the case member of the reduction nipple of left port and baffle plate bridge is different with the radius in the interior cross section of the radius in the interior cross section of the case member of the reduction nipple of right output port and baffle plate bridge.And the outer wall with the seal ring that is used for the connecting tube that the sealing both ends mouth is connected leans the inwall of the pipe joint shell of each port at two ends respectively, so that transmit the chucking power of clamp device better.

In the present embodiment, because the internal diameter difference of two ports, the internal diameter of pipe joint and incomplete same on the axial direction, therefore can cooperatively interact for each parts that makes pipe joint, on arbitrary cross section of axial direction, the internal diameter in cross section is identical in case member and the baffle plate bridge, so that the interior cross section of case member and baffle plate bridge all is the part of same circular section on arbitrary in the axial direction cross section.

The seal ring of the pipe joint in the present embodiment is also consistent with the inner wall shape of the housing of this pipe joint, and the diameter of the outer wall of the connecting tube that the internal diameter of sealing circle two ends port will be connected with two ends respectively is complementary, so that when clamp device clamps, under the effect of chucking power, can effectively seal chain and take over.

In addition, except the pipe joint of two-port, the utility model also can be used in multiple way union.

Below in conjunction with accompanying drawing 6a～Fig. 6 d, be that example describes multiple way union with the three-way union of two-piece type structure.

The three-way union of two-piece type comprises that housing and seal ring two-part constitute.

Its middle shell comprises shell and steps up device.Further, shell comprises first case member 61, second case member 62, the 3rd baffle plate bridge 63, the 4th baffle plate bridge 64, the 5th baffle plate bridge 65.

In the present embodiment, this first case member 61, second case member 62 are neighbouring, and between these two adjacent case members, leave a gap that extends axially and upwards have in week a predetermined spacing.Three port part at shell, first case member 61 curve inwardly respectively and a radially inside definite length extended with form respectively three port part the 3rd baffle plate 611, the second case members 62 also three port part curve inwardly respectively and in a radially inside definite length extended to form the 4th baffle plate 621.

The 3rd baffle plate bridge 63, the 4th baffle plate bridge 64, the 5th baffle plate bridge 65 are installed in three predetermined gap places between first case member and second case member respectively, are used to seal this three predetermined gaps.Particularly, an end of each baffle plate bridge is connected with the axially open of a case member of this predetermined gap one side is inboard, for example is welded to connect.The other end of each baffle plate bridge is a free end, can be when clamp device tighten up the axially open of pipe joint, and move along the inwall of the case member of this predetermined gap opposite side, thereby do not influence the clamp operation of pipe joint.

The housing of the three-way union shown in Fig. 6 a also comprises clamp device, and the clamp device of the pipe joint in the present embodiment adopts ledge arrangement, and the ledge arrangement in this ledge arrangement and the above-mentioned curved connection for bbreather pipe roughly the same is not repeated at this.

Because present embodiment is the T joint header structure, comprises 3 predetermined gaps between first case member 61 and second case member 62, i.e. first gap 67, second gap 68 and third space 69.First lug 601 that has axial distribution and aim in a circumferential direction in first gap, 67 upper and lower settings is at second gap, 68 upper and lower settings, second lug 602, at third space 69 upper and lower settings the 3rd lug 603.

Wherein, every pair of lug is respectively arranged with two through holes of aiming in a circumferential direction, and also comprises a latch with the lug of a predetermined gap both sides.Wherein this latch is provided with the through hole of aiming at mutually with the through hole of lug.In addition, each clamp device also comprises the bolt that passes through hole on every pair of lug.

During installation, shown in Fig. 6 d, bolt is passed through hole on the lug and the through hole on the latch, and by tightening this bolt, shell is shunk on the circumferencial direction of described port part, to form radially inner chucking power,, the seal ring port part that is placed in the pipe joint shell make the outer wall of the connecting tube that seal lip ring chucking seal ring is interior realize sealing thereby being shunk in this port part.

Stereogram with reference to the seal ring of present embodiment among the figure 6b, the outer wall shape of the seal ring of present embodiment is consistent with the outer casing inner wall of pipe joint, so that after installing, the outer wall of the seal ring in the present embodiment can be leant with the inwall of the shell of pipe joint, thereby can better transmit the chucking power that clamp device produces.

With reference to the sectional view of the seal ring of present embodiment among the figure 6c, the seal ring of present embodiment has three port part, and the structure of each port part is identical with the structure of above-mentioned curved connection for bbreather pipe, does not state tired at this.

For can the axial restraint seal ring, the three-way union of present embodiment is provided with between the baffle plate of seal ring end and shell has carrying secretly of inclination outer circumferential face, this end of carrying secretly is against described baffle plate, and the inclination outer circumferential face of carrying inclination exterior edge face and seal ring secretly leans, thereby seal ring is out of shape in the opening tightening process in enclosure axis promotes to carry secretly chucking connecting tube outer wall, thereby realize axial restraint seal ring.

In addition, need to prove that the bore of the port of the three-way pipe in this enforcement can be identical, also can be different, so that the three-way pipe in the present embodiment can be used in the connection of three connecting tubes of different bores.And where necessary, those skilled in the art can pass through the quantity of quantity, clamp device and the predetermined gap of increase case member, pipe joint of the present utility model are applicable to the situation of the three-way union of 3 above case members.

And, by increasing the port number of pipe joint, and making each port all comprise a plurality of case members and clamp device is set at each port, those skilled in the art also can be applicable to the utility model the pipe joint of the port more than 4.

Technology contents of the present utility model and technical characterstic disclose as above, yet those of ordinary skill in the art still may do all distortion that does not deviate from the utility model design based on teaching of the present utility model and announcement.Therefore, protection domain of the present utility model should be not limited to the content that embodiment discloses, and the various distortion that do not deviate from the utility model design are the present patent application claim and contain.

Claims

1, a kind of housing of sealed pipe joint comprises,

Shell, have a plurality of port part, wherein said shell comprises a plurality of separated type case members, and the interior cross section of each port part is circular, and the part or all of case member of described a plurality of separated type case members is in the interior cross section of the described port part of interior section constitution of this port part;

A plurality of clamp devices are used for fastening described a plurality of case members to form described shell and to form radially inner chucking power in each port part.

2. housing according to claim 1, it is characterized in that, have an axially extended gap between the adjacent shells parts in the part or all of case member in a plurality of separated type case members at each port part place, this gap has the predetermined spacing on the circumferencial direction.

3. housing according to claim 1 and 2 is characterized in that, the part or all of case member in a plurality of separated type case members at each port part place is included in that the port part place curves inwardly and at the baffle plate that extends radially inwardly first predetermined length.

4. housing according to claim 1 is characterized in that, described clamp device comprises:

Flexible metal bar, its have two crooked in the same way and have an afterbody of through hole;

Bolt, it can pass the through hole of described two afterbodys;

Wherein, described flexible metal bar can center on described a plurality of case members, and wherein two afterbodys are outwardly-bent, can carry out fastening to form described shell to described a plurality of case members by tightening the described bolt that passes two afterbody through holes.

5. housing according to claim 4 is characterized in that, the described bolt that each flexible metal bar gets two afterbody through holes that passes of each port part by being tightened in described shell forms radially inner chucking power.

6. housing according to claim 2, it is characterized in that, described adjacent shells parts with gap have axial distribution respectively and aim in a circumferential direction in both sides, described gap one or more pairs of lugs wherein, have two through holes of aiming in a circumferential direction on every pair of lug;

Wherein, described a plurality of clamp devices comprise and pass each bolt to through hole on the lug, pass each described bolt to through hole on the lug and can carry out fastening to form described shell to described a plurality of case members by tightening.

7. housing according to claim 6 is characterized in that, each described bolt to through hole on the lug that passes of each port part by being tightened in described shell forms radially inner chucking power.

8. according to each described housing in the claim 1 to 7, it is characterized in that, the adjacent case member of part interconnects in described a plurality of case member, a case member axial distribution in the described interconnective adjacent shells parts has one or more holes that buckle, another case member buckles the hole at circumferencial direction and this one or more buckling is set symmetrically

Wherein, described buckle to pass with it buckle the hole to be connected described interconnective adjacent shells parts with being symmetrical arranged.

9. housing according to claim 2, it is characterized in that, it is characterized in that, also comprise the baffle plate bridge, this baffle plate bridge location is between the adjacent shells parts in described gap, and described baffle plate bridge one end is connected with the inwall of described gap described adjacent shells parts on one side near described predetermined gap one side, the other end is free end and contacts with the inwall of the described adjacent shells parts of described gap another side, when described clamp device clamps, described free end along the circumferential direction slides, so that described baffle plate bridge produces chucking power in described interstitial site.

10, housing according to claim 1, described a plurality of shell comprises any structure in bend pipe, straight tube, three-way pipe, the reducer pipe, and the port of described any structure axially stretch out one second predetermined length and with the port of described any structure with the straight tube in footpath port part as shell.

11, a kind of sealed pipe joint, comprise housing and seal ring, its middle shell comprises shell and a plurality of clamp device, described seal ring is nested in the described shell, the seal ring port position is in the outer shell end oral area, and the inwall of the outer wall of seal ring port part and outer shell end oral area leans, the port part of described seal ring is provided with radially the seal lip ring to inner process, when the fastening shell of clamp device, in the chucking power that outer casing end produces the seal ring port part being shunk makes seal lip ring tighten the outer wall realization sealing of the connecting tube in the seal ring, it is characterized in that, described shell, have a plurality of port part, wherein said shell comprises a plurality of separated type case members, the interior cross section of each port part is circular, and the part or all of case member of described a plurality of separated type case members is in the interior cross section of the described port part of interior section constitution of this port part; Described clamp device is used for fastening described a plurality of case members to form described shell and to form radially inner chucking power in each port part.

12, sealed pipe joint according to claim 11, it is characterized in that, have an axially extended gap between the adjacent shells parts in the part or all of case member in a plurality of separated type case members at each port part place, this gap has the predetermined spacing on the circumferential direction.

13, pipe joint according to claim 11 is characterized in that, the part or all of case member in a plurality of separated type case members at each port part place is included in that the port part place curves inwardly and at the baffle plate that extends radially inwardly first predetermined length.

14, according to each described sealed pipe joint in the claim 11 to 13, it is characterized in that described clamp device comprises:

Bolt, it can pass the through hole of described two afterbodys;

15. according to each described sealed pipe joint in the claim 11 to 13, it is characterized in that, described adjacent shells parts with gap have axial distribution respectively and aim in a circumferential direction in both sides, described gap one or more pairs of lugs, wherein, have two through holes of aiming in a circumferential direction on every pair of lug; And described a plurality of clamp device comprises and passes each bolt to through hole on the lug, passes each described bolt to through hole on the lug and can carry out fastening to form described shell to described a plurality of case members by tightening.

16. sealed pipe joint according to claim 11, it is characterized in that, it is characterized in that, also comprise the baffle plate bridge, this baffle plate bridge location is between the adjacent shells parts in described gap, and described baffle plate bridge one end is connected with the inwall of described gap described adjacent shells parts on one side near described predetermined gap one side, the other end is free end and contacts with the inwall of the described adjacent shells parts of described gap another side, when described clamp device clamps, described free end along the circumferential direction slides, so that described baffle plate bridge produces chucking power in described interstitial site.

17. sealed pipe joint according to claim 11, it is characterized in that, described a plurality of shell comprises any structure in bend pipe, straight tube, three-way pipe, the reducer pipe, and the port of described any structure axially stretch out one second predetermined length and with the port of described any structure with the straight tube in footpath port part as shell.

18. sealed pipe joint according to claim 13, it is characterized in that also comprising carrying secretly between described baffle plate and described seal ring end, described carrying secretly has the inclination outer circumferential face, described seal ring port part has the inclination exterior edge face, this inclination outer circumferential face of carrying inclination exterior edge face and seal ring secretly leans, and an end of carrying secretly promotes to carry secretly chucking connecting tube outer wall against described baffle plate thereby seal ring is out of shape in the opening tightening process in enclosure axis.

19, sealed pipe joint according to claim 11, it is characterized in that, described seal ring end also is provided with the supporting portion, described supporting portion and seal lip ring axially are provided with from inside to outside at seal ring, and described seal lip ring root is provided with the stress buffer chamber that distributes along circumferentially, sealing lip ring root is provided with pressure compensation channel in abutting connection with place, described stress buffer chamber, and this stress buffer chamber is connected with the described pressure compensation channel of sealing lip ring.