CN212407899U

CN212407899U - Quick-connecting pipe fitting structure

Info

Publication number: CN212407899U
Application number: CN202021247943.1U
Authority: CN
Inventors: 傅峰峰; 江志强; 聂健基; 谢源盛
Original assignee: Guangzhou Fugang Life Intelligent Technology Co Ltd
Current assignee: Guangzhou Fugang Life Intelligent Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-26
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a quick-connection pipe fitting structure, which comprises a first pipe fitting and a second pipe fitting which are mutually connected, wherein a sealing ring is arranged at the joint of the first pipe fitting, and a valve core is arranged in an inner cavity; the valve core plugs the sealing ring under a normal state so as to seal the connection position of the first pipe fitting; when the two pipe fittings are connected, the two pipe fittings move axially and relatively, the second pipe fitting pushes the valve core away from the sealing ring, so that the first pipe fitting is communicated with the second pipe fitting, the valve core is provided with an inner cavity, one end of the valve core, facing the second pipe fitting, is provided with a bottom opening leading to the inner cavity, the side part of the valve core is provided with a side opening leading to the inner cavity, and the valve core is plugged in the sealing ring in a normal state, so that the side opening is blocked by the sealing ring to seal the side; when the valve core is pushed away from the sealing ring by the second pipe fitting during connection, the side opening is not blocked by the sealing ring any more. The designer need not to change case diameter, only needs to design case bottom opening size and side opening size according to the condition, just can adjust the size of area of overflowing.

Description

Quick-connecting pipe fitting structure

Technical Field

The utility model belongs to the technical field of the pipeline is connect soon and specifically relates to two structures of connecting pipe fitting soon that connect each other soon.

Background

Two quick-connecting pipe fitting structures which are mutually and quickly connected in the prior art are shown in patent document CN203784539U, which discloses a quick-connecting type self-locking joint, mainly, as shown in fig. 5, a first pipe fitting 1 and a second pipe fitting (not shown in the figure) which are mutually connected are disclosed, a spring 9 and a valve core 5 for closing an opening part of the first pipe fitting 1 are arranged in an outer connecting sleeve 7 of the first pipe fitting 1, one end of the spring 9 is fixedly connected in the first pipe fitting 1, and the other end of the spring is fixedly connected with the valve core 5. When the two pipe fittings are not connected, the spring 9 in the first pipe fitting 1 pushes the valve core 5 to seal the opening part of the first pipe fitting 1. When the first pipe fitting 1 is connected with the second pipe fitting, the second pipe fitting pushes the valve core 5 leftwards and compresses the spring 9, so that the opening part of the first pipe fitting 1 is not closed by the valve core 5 any more, and a water flowing channel is formed between the inner side wall of the outer connecting sleeve 7 and the side wall of the valve core 5, which means that the connection of the two pipe fittings is completed. Because some valve cores 5 are thick, the distance between the inner wall of the second pipe and the outer wall of the valve core 5 is small, the flow area of the first pipe 1 is always far smaller than that of the second pipe, and the water pressure in the first pipe 1 is too high due to the over-high flow speed. The designer generally increases the flow area by only reducing the diameter of the valve core 5, but the sealing performance of the first pipe 1 is deteriorated if the diameter of the first pipe 1 is not changed and the diameter of the valve core 5 is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at providing a connect pipe fitting structure soon to the designer need not to reduce the case diameter and also can increase the area of overflowing when designing the pipe fitting.

The quick-connection pipe fitting structure comprises a first pipe fitting and a second pipe fitting which are mutually connected, wherein a sealing ring is arranged at the joint of the first pipe fitting, and a valve core is arranged in an inner cavity; the valve core plugs the sealing ring under a normal state so as to seal the connection position of the first pipe fitting; when the two pipe fittings are connected, the two pipe fittings move axially and relatively, the second pipe fitting pushes the valve core away from the sealing ring, so that the first pipe fitting is communicated with the second pipe fitting, the valve core is provided with an inner cavity, one end of the valve core, facing the second pipe fitting, is provided with a bottom opening leading to the inner cavity, the side part of the valve core is provided with a side opening leading to the inner cavity, and the valve core is plugged in the sealing ring in a normal state, so that the side opening is blocked by the sealing ring to seal the side; when the valve core is pushed away from the sealing ring by the second pipe fitting during connection, the side opening is not blocked by the sealing ring any more.

Furthermore, an elastic piece is arranged in the first pipe fitting and used for pushing the valve core to plug the sealing ring.

Furthermore, one end of the valve core, which is connected with the elastic part, radially extends out of a blocking sheet which is axially blocked by the sealing ring so as to prevent the valve core from slipping off the sealing ring.

Further, the docking end of the second tubular is inserted into the docking of the first tubular.

Further, a pushing block used for pushing the valve core axially extends out of the connection end of the second pipe fitting.

Furthermore, a clamping block is arranged on the outer side wall of the second pipe fitting, and a clamping groove is formed in the inner side wall of the first pipe fitting; when the two pipe fittings are connected, the clamping blocks are locked after entering the clamping grooves, so that the two pipe fittings are locked with each other.

Has the advantages that: because the liquid in the first pipe fitting flows into the second pipe fitting through the bottom opening and the side opening of the valve core, a designer does not need to change the diameter of the valve core, and can adjust the size of the flow area by only designing the size of the bottom opening and the size of the side opening of the valve core according to the condition, so that the flow speed and the water pressure in the second pipe fitting meet the design standard requirements.

Drawings

FIG. 1 is an exploded view of two tubulars being quickly connected to each other;

FIG. 2 is a schematic cross-sectional view of two pipe elements before joining;

FIG. 3 is a schematic cross-sectional view of two pipes joined together;

FIG. 4 is a schematic view of the water flow path of two pipes;

FIG. 5 is a schematic cross-sectional view of a prior art quick connect fitting construction;

in the figure: 1. a first pipe member; 2. a second pipe member; 3. an outlet member; 4. a seal ring; 5. a valve core; 6. a spring; 7. an inlet piece; 10. a clamping block; 11. a push block; 30. a card slot; 50. opening the side; 51. a bottom opening; 52. a baffle plate.

Detailed Description

The quick-connect pipe fitting structure is shown in fig. 1 and comprises a first pipe fitting 1 and a second pipe fitting 2 which are mutually connected in an overlap mode. First pipe fitting 1 includes inlet 7, spring 6, case 5, sealing washer 4, export piece 3 from preceding to back in proper order, and inlet 7 is used for refuting and connects municipal water pipe (not shown in the figure), and the rear end of export piece 3 is as the department of refuting of first pipe fitting 1. The front end of the spring 6 is fixedly connected in the inlet piece 7, and the rear end is fixedly connected with the front end of the valve core 5. The sealing ring 4 is fixedly arranged at the rear end of the outlet member 3. As shown in fig. 2, the valve body 5 has an inner cavity, and a bottom opening 51 is opened at the rear end to the inner cavity, and a side opening 50 is opened at the side to the inner cavity. Before the second pipe member 2 and the first pipe member 1 are connected, the first pipe member 1 is already in an assembled state, and the front end of the inlet member 7 is connected with a municipal water pipe. The valve core 5 is positioned in the inner cavity of the first pipe fitting 1, the valve core 5 is pushed by the spring 6 to plug the sealing ring 4, and the side opening 50 is blocked by the sealing ring 4 to seal the connection part of the first pipe fitting 1, so that the water of the municipal water pipe flows out from the connection part of the first pipe fitting 1 before connection. The front end of the valve core 5 is extended with a blocking sheet 52 in radial direction, which is blocked by the sealing ring 4 in axial direction to prevent the valve core 5 from slipping off the sealing ring 4. Two clamping blocks 10 radially extend out of the outer side wall of the second pipe fitting 2, and two L-shaped clamping grooves 30 circumferentially corresponding to the clamping blocks 10 are formed in the inner side wall of the outlet fitting 3.

When the second pipe fitting 2 and the first pipe fitting 1 are connected, an operator enables the second pipe fitting 2 to be circumferentially aligned with the first pipe fitting 1, the clamping block 10 is circumferentially aligned with the notch of the clamping groove 30, then the second pipe fitting 2 is pushed to move forwards axially so that the clamping block 10 enters the clamping groove 30 until the clamping block 10 reaches the groove bottom of the clamping groove 30, and at the moment, the front end of the second pipe fitting 2 serving as a connection end is inserted into the connection position of the first pipe fitting 1. And then the second pipe fitting 2 is screwed clockwise so that the clamping groove 30 axially locks the clamping block 10, and the second pipe fitting 2 and the first pipe fitting 1 are locked with each other. The second pipe fitting 2 axially pushes the valve core 5 forwards in the process of axially forwards moving, so that the valve core axially forwards moves while compressing the spring 6. A push block 11 axially extends out of the front end of the second pipe fitting 2; when the latch 10 reaches the bottom of the notch 30, as shown in fig. 3, the valve body 5 is pushed away from the sealing ring 4 by the push block 11 of the second pipe member 2 so that the side opening 50 is not blocked by the sealing ring 4. In this state, the water in the first pipe 1 first reaches the inner cavity of the valve core 5 through the side opening 50, and then flows out from the inner cavity of the valve core 5 into the second pipe 2 through the bottom opening 51, and the water flow path is as shown in fig. 4. Need dismantle during the quick-connect pipe fitting, operating personnel counter-clockwise twists second pipe fitting 2 and then takes out its axial, and then case 5 axial resets under the elastic force effect of spring 6, and then case 5 plugs sealing washer 4 again, promptly side opening 50 is blocked by sealing washer 4 again, and case 5 refutes the department of connecing to first pipe fitting 1 with sealing washer 4 again and seals.

If, as a non-preferred alternative, the second tubular element 2 is not moved and the first tubular element 1 is moved axially backwards to connect the second tubular element 2, the valve element 5 is axially blocked by the second tubular element 2, meaning that the valve element 5 is pushed out of the sealing ring 4 by the second tubular element 2, and the water in the first tubular element 1 flows into the second tubular element 2.

Claims

1. The quick-connection pipe fitting structure comprises a first pipe fitting and a second pipe fitting which are mutually connected, wherein a sealing ring is arranged at the joint of the first pipe fitting, and a valve core is arranged in an inner cavity; the valve core plugs the sealing ring under a normal state so as to seal the connection position of the first pipe fitting; make axial relative movement when two pipe fittings are refuted and are connect, the second pipe fitting is with the case pushes away from sealing washer department to make first pipe fitting intercommunication second pipe fitting, its characterized in that: the valve core is provided with an inner cavity, one end of the valve core, facing the second pipe fitting, is provided with a bottom opening leading to the inner cavity, the side part of the valve core is provided with a side opening leading to the inner cavity, and the side opening is blocked by the sealing ring to seal the side opening when the valve core is plugged by the sealing ring in a normal state; when the valve core is pushed away from the sealing ring by the second pipe fitting during connection, the side opening is not blocked by the sealing ring any more.

2. The quick connect pipe fitting structure of claim 1, wherein: an elastic part is arranged in the first pipe fitting and pushes the valve core to plug the sealing ring.

3. The quick connect pipe fitting structure of claim 2, wherein: one end of the valve core, which is connected with the elastic part, radially extends out of a blocking sheet which is axially blocked by the sealing ring so as to prevent the valve core from slipping off from the sealing ring.

4. The quick connect pipe fitting structure of claim 1, wherein: the docked end of the second tubular is inserted into the dock of the first tubular.

5. The quick connect pipe fitting structure of claim 4, wherein: and a pushing block used for pushing the valve core axially extends out of the connection end of the second pipe fitting.

6. The quick connect pipe fitting structure of claim 5, wherein: the outer side wall of the second pipe fitting is provided with a clamping block, and the inner side wall of the first pipe fitting is provided with a clamping groove; when the two pipe fittings are connected, the clamping blocks are locked after entering the clamping grooves, so that the two pipe fittings are locked with each other.