CN2380777Y

CN2380777Y - Pipe connecting device

Info

Publication number: CN2380777Y
Application number: CN 99217949
Authority: CN
Inventors: 吴金林
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-13
Filing date: 1999-08-13
Publication date: 2000-05-31
Anticipated expiration: 2009-08-13

Abstract

The utility model relates to a pipe connecting device used for connecting pipes for an inner machine and an outer machine of a split type air conditioner. An independent self-sealing mechanism is respectively arranged in a male joint and a female joint. The self-sealing mechanism of the male joint is sealed through a moveable valve core which is pushed to a ring table by a spring. The self-sealing mechanism of the female joint is sealed through a moveable valve head which is abutted onto a fixed valve core in the female joint by a spring. When the male joint and the female joint are cooperated with each other, the self-sealing mechanisms in the male joint and the female joint are no longer sealed, and a communicating passage is formed in the two joints. The utility model has the advantages of convenient connection and disassembly and reliable seal, and is suitable for connecting pipes in gas and liquid systems.

Description

Pipe connecting device

The utility model relates to a kind of pipe connecting device, and specifically it is applicable to that the pipe fitting between the detachable air conditioner indoor unit and outdoor unit connects.

At present, the connection set of air conditioner indoor unit and outdoor unit generally is made up of the copper pipe of stop valve, pipe nut, enlarging etc., in this structure, the copper pipe of enlarging is connected with stop valve by pipe thread, because indoor set does not have self-styled putting, will close stop valve then with the refrigerant-recovery in the vaporizer in outdoor unit during dismounting, refrigeration agent will be lost inevitably during recovery; In addition, be air in the indoor set inner chamber before indoor unit and outdoor unit connects, therefore to carry out emptying, emptying not only will cause loss of refrigerant, and is mixed with air in the refrigeration agent, and its performance also will decrease in the air conditioner use afterwards; There is the copper pipe of being exactly enlarging to need special tool again, nut connects the employing spanner, open or close stop valve and need special tool, connection procedure needs strictness to operate sequentially, and each joint that connects also will be hunted leak, therefore, and the pipe fitting connection of the inside and outside machine of split-type air conditioner device and disassembly procedure complexity, personnel's technical requirements height is wasted time and energy.

The purpose of this utility model is to design a kind ofly to be convenient to dismantle and the pipe connecting device that carries sealing that is connected.

For achieving the above object, the technical solution adopted in the utility model is a kind of pipe connecting device, it is made of a pair of pin and box sub that is fitted to each other, the cavity that communicates for the head and the tail two ends in the female joint, the tail end of female joint is connected with pipeline, the front end internal fixation has a spool, spool is take the lead shaft-like, its head one end is positioned at front end one side of female joint, and spool places in the valve head of a loop overlapping shape, and valve head tail end one side has stage clip, front end one side of valve head can be pressed on relatively its shaft one side of spool head, and the contacting point is for being sealed and matched, and the external diameter of valve head front end is greater than the diameter of spool head, and the relative female joint of valve head can move axially and be provided with seal ring therebetween; The cavity that communicates for the head and the tail two ends in the tool joint pin, the afterbody of tool joint pin is connected with pipeline, be provided with an axially displaceable spool in the front end, spool is take the lead shaft-like, its head one end is positioned at tool joint pin front end one side, be provided with a stage clip in the tool joint pin, its front end is pressed on relatively shaft one side of head of spool, and the front end of spool head compresses the inboard of circle platform that tool joint pin front end mouth of pipe place is provided with and constitutes and is sealed and matched; In the described tool joint pin internal diameter of set circle platform be slightly larger than the spool in the female joint head external diameter and less than the external diameter of valve head; When above-mentioned male and female joint connected as one, described valve head and spool were retired in the joint at place separately to it, constituted the path that connects in the male and female joint.

As shown from the above technical solution, the male and female joint constitutes pipe connecting device, be provided with independently selfsealings mechanism in the male and female joint separately, tool joint pin from sealing assembly be by spring will be movably spool push up circle platform place set in the tool joint pin, and form and be sealed and matched; The selfsealings assembly of female joint be by spring will be movably the valve head of loop overlapping shape compress the head of the spool fixedly connected with respect to female joint, and form and be sealed and matched.Adopt corresponding Placement that the male and female joint is affixed to together, valve head in the female joint is subjected to the extruding of circle platform in the tool joint pin and moves in the female joint at its place, simultaneously, slidably spool is subjected to the spool head in the female joint to push also mobile in the tool joint pin pipe at its place, when the male and female joint cooperates like this, selfsealings mechanism in the male and female joint no longer seals, and forms a path that is communicated with in both manage; When the male and female joint disassembly separated, the selfsealings assembly in the male and female joint was in sealing state again, and its pipe is inside and outside no longer to be communicated with.

Compared with prior art, the utlity model has following advantage:

Because the male and female joint each has independently from sealing assembly, vacuumizing during production and filling does not need welding procedure pipe, threeway, filled joint, and therefore, but the first mate reduces production costs;

Because the male and female joint does not need emptying when installing, air can not enter pipe-line system yet, and refrigeration agent can not lose, installation, dismounting operation have been simplified, time saving and energy saving, saved the trouble that reclaims refrigeration agent during dismounting, also avoided the ride quality problem that causes because of installation simultaneously.

Description of drawings

Fig. 1,2,3 is the 1st example structure schematic representation;

Fig. 2 is the structural representation of female joint;

Fig. 3 is the structural representation of tool joint pin;

Fig. 4 is the utility model assembly structure schematic representation.

Fig. 4,5,6,7 is the 2nd example structure schematic representation;

Fig. 4 is the installation diagram of public valve body;

Fig. 5 is the installation diagram of main-valve body;

Fig. 6, the 7th, male and female valve body mated condition schematic representation.

Below in conjunction with drawings and Examples the utility model is described in more detail.

Embodiment 1

Referring to Fig. 1, female joint 1 is that two ends are that large and small diameter and middle part are the pipe fitting of taper, and this is a kind of technologic shape need, and it is small-bore is convenient to linking to each other with pipe-line system, the heavy caliber end canular main-valve body 5 that is connected, but both solderings connections.For movingly, be provided with seal ring 6 therebetween between the outer wall of valve head 8 and the main-valve body 5, select usually that " " the type circle can satisfy the seal request between valve head 8 and the main-valve body 5 to O for use.The tail end of main-valve body 5 is fixed a support 2, support 2 is that the position limits the position with the tail end of main-valve body 5, a circle platform that is the summary projection on female joint 1 inner wall surface constitutes the spacing of support 2, the column termination of support 2 middle parts and spool 4 is connected, general employing riveted joint gets final product, therefore, the position of spool 4 relative main-valve bodies 5 is relatively-stationary.Support 2 is the bearing of claw-like, and large-scale space is arranged between its pawl, forms the large-area form that communicates in axial both sides, is convenient to the circulation of refrigeration agent.The two ends of stage clip 3 are pressed on respectively on support 2 and the valve head 8, the front end of valve head 8 is provided with plain seal circle 9, adopt bonding sulfuration process that plain seal circle 9 is fixed on the valve head 8, it is sealed and matched with the flat surface formation at the head circumferential edges place of the spool 4 with cone head, and the sealability at this place is the key whether female joint 1 possesses the selfsealings performance.

Referring to Fig. 2, tool joint pin 15 is that two ends are for big, minor diameter and middle part are the body of taper, the heavy caliber end is fixed with public valve body 10, public valve body 10 is an one with tool joint pin 15 solderings, public valve body 10 is a cannula-like, support 13 is fixed on the afterbody of tool joint pin 15 heavy caliber ports and close public valve body 10, support 13 is spacing with the circle platform of tool joint pin 15 pipe internal surface projectioies, support 13 has similar claw-like structure to support 2, the hole at the column rod end of spool 14 and support 13 middle parts constitutes movingly, the hole at support 13 middle parts plays a part to provide guiding for spool 14 moves, the head of spool 14 is a cone table shape, cone is positioned at column shaft one side, stage clip 12 1 ends are pressed on the support 13, the other end is pressed on the platform place at the circumferential edges place of spool 14 cone heads, the front end of spool 14 is provided with seal ring 11, sealing circle 11 cross sections are substantially triangle or taper type, it and spool 14 adopt bonding sulfuration process to form one, sealing circle 11 is sealed and matched with the inboard formation that is arranged on the circle platform 10a on the public valve body 10, the circle platform 10a of public valve body 10 can be arranged to tapered slope, to keep constituting strict being sealed and matched with seal ring 11.

Referring to Fig. 1,2,3, the front end of main-valve body 5 is connected with and one axially limits, circumferential rotating nut sleeve 7, and both adopt the clinching form to cooperate, and are similar to the high-pressure oil pipe joint, and the outer wall front end of public valve body 10 is provided with the outside thread that matches in this nut sleeve 7.

In Fig. 3, when male and

female joint

1,15 matched, public valve body 10 was screwed in the nut sleeve 7, and the circle platform 10a outside of public valve body 10 front ends is against compression press spring 3 on the valve head 8, thereby valve head 8 is inwardly retired, valve head 8 breaks away from spool 4 and cooperates, and the front end of corresponding spool 4 arrives to the front end of spool 14 and pushes stage clip 12 and shrink, and spool 14 is inwardly retired, and break away from circle platform 10a and to cooperate, at this moment, at male and

female joint

1,15, form the path that is communicated with in valve head 8, the public valve body 10 and around the

spool

4,14.

Embodiment 2

Because the air-conditioning indoor unit and outdoor unit is connected with two copper pipes, thereby two groups of pipe connecting devices of needs, shown in Fig. 4,5, on public valve body 10 and tool joint pin 15 mounting plates 16, mounting plate 16 is contained on the air conditioner outdoor machine, main-valve body 5 is installed on the housing 20, hinged handle 17 on the housing 20, which is provided with eccentric mass 17a, a conflict side end face of the mobile plate 19 that is connected with on the housing 20 of the outer surface of eccentric mass 17a, mobile plate 19 middle parts are enclosed within the female joint 1, are connected with spring 18 between mobile plate 19 and the main-valve body 5, and push pedal 21 links to each other with main-valve body 5.

Shown in Fig. 6,7, when the male and female joint contacts, referring to Fig. 7, after the contact of male and female valve body, the automatic stuck public valve body of housing 20 meetings will drive push pedal 21 and main-valve body 5 to public valve body 10 1 side shiftings during plate active handle 17, make spool 4 back down spool 14, eccentric mass 17a on the handle 17 has arrived till the dead point, as shown in Figure 6.In the time will separating connection set, only need to move handle 17 to position shown in Figure 7, connection set will separate automatically.

Claims

1. pipe connecting device, it is characterized in that: it is made of a pair of pin and box sub that is fitted to each other, the cavity that communicates for the head and the tail two ends in the female joint (1), the tail end of female joint (1) is connected with pipeline, the front end internal fixation has a spool (4), spool (4) is take the lead shaft-like, its head one end is positioned at front end one side of female joint (1), spool (4) places in the valve head (8) of a loop overlapping shape, valve head (8) tail end one side has stage clip (3), the front end of valve head (8) can be pressed on relatively its shaft one side of spool (4) head, and the contacting point is for being sealed and matched, the external diameter of valve head (8) front end is greater than the diameter of spool (4) head, and valve head (8) female joint (1) relatively can move axially and be provided with seal ring therebetween; The cavity that communicates for the head and the tail two ends in the tool joint pin (15), the afterbody of tool joint pin (15) is connected with pipeline, be provided with an axially displaceable spool (14) in the front end, spool (14) is take the lead shaft-like, its head one end is positioned at tool joint pin (15) front end one side, be provided with a stage clip (12) in the tool joint pin (15), its front end is pressed on relatively shaft one side of head of spool (14), and the front end of spool (14) head compresses the inboard of circle platform (10a) that tool joint pin (15) front end mouth of pipe place is provided with and constitutes and is sealed and matched; The internal diameter that set circle platform (10a) is gone up in described tool joint pin (15) be slightly larger than the spool (4) in the female joint (1) head external diameter and less than the external diameter of valve head (8); Above-mentioned male and female joint (1), (15) are when connecting as one, and described valve head (8) and spool (14) are retired in the joint at place separately to it, constitute the path that connects in male and female joint (1), (15).

2. pipe connecting device according to claim 1, it is characterized in that: female joint (1) is that two ends are big, minor diameter and middle part are the pipe fitting of taper, the heavy caliber end canular main-valve body (5) that is connected, between the outer wall of valve head (8) and the main-valve body (5) for being provided with seal ring (6) movingly and therebetween, the tail end of main-valve body (5) is fixed a support (2), its middle part is connected with the column termination of spool (4), the two ends of stage clip (3) are pressed on respectively on support (2) and the valve head (8), the front end of valve head (8) is provided with plain seal circle (9), and it is sealed and matched with the flat surface formation at the head circumferential edges place of the spool (4) with cone head.

3. pipe connecting device according to claim 1, it is characterized in that: tool joint pin (15) is that two ends are for big, minor diameter and middle part are the pipe fitting of taper, the heavy caliber end is fixed with public valve body (10), public valve body (10) is a cannula-like, support (13) is fixed in the heavy caliber end of tool joint pin (15), the hole at the column rod end of spool (14) and its middle part constitutes movingly, the head of spool (14) is a cone table shape, stage clip (12) one ends are pressed on the support (13), the other end is pressed on the circumferential edges platform place of spool (14) cone head, the front end of spool (14) is provided with seal ring (11), and it is sealed and matched with circle platform (10a) formation that is arranged on the public valve body (10).

4. according to claim 2 or 3 described pipe connecting devices, it is characterized in that: the front end of main-valve body (5) is connected with and one axially limits, circumferential rotating nut sleeve (7), and the outer wall front end of public valve body (10) is provided with the outside thread that matches with this nut sleeve (7).

5. according to claim 2 or 3 described pipe connecting devices, it is characterized in that: on public valve body (10) and tool joint pin (15) mounting plate (16), main-valve body (5) is installed on the housing (20), housing (20) is gone up hinged handle (17), which is provided with eccentric mass (17a), a conflict side end face of the mobile plate (19) that is connected with on the housing (20) of the outer surface of eccentric mass (17a), mobile plate (19) middle part is enclosed within the female joint (1), be connected with spring (18) between mobile plate (19) and the main-valve body (5), push pedal (21) links to each other with main-valve body (5).