CN223203915U - Quick connection structure of indoor water supply pipeline - Google Patents

Abstract

The application discloses a quick connection structure of an indoor water supply pipeline, and relates to the technical field of water pipe connection. The indoor water supply pipeline quick connecting structure comprises a first water pipe, a second water pipe, a connecting pipe, a first screw sleeve, a second screw sleeve, a first sealing ring, a second sealing ring, a first pressing component and a second pressing component. The connecting pipe is sleeved with the first water pipe and the second water pipe. The connecting tube has external threads. One end of the first screw sleeve surrounds the first water pipe, and the other end of the first screw sleeve is connected with the connecting pipe through internal threads. The first sealing ring is in seamless tight contact with the first water pipe and the first screw sleeve. The first pressing component presses the first sealing ring on one end face of the connecting pipe. One end of the second screw sleeve surrounds the second water pipe, and the other end of the second screw sleeve is connected with the connecting pipe through internal threads. The second sealing ring is in seamless tight contact with the second water pipe and the second screw sleeve. The second pressing component presses the second sealing ring on the other end face of the connecting pipe. The first water pipe and the second water pipe can be connected by rotating the first screw sleeve and the second screw sleeve.

Description

Quick connection structure of indoor water supply pipeline

Technical Field

The application relates to the technical field of water pipe connection, in particular to a quick connection structure of an indoor water supply pipeline.

Background

The indoor water pipe is connected by screw connection, welding, flange connection and the like. In order to improve the tightness of the threaded connection, some sealing materials, such as lead oil, hemp thread, raw material tape, sealant and the like, are generally required to be coated on the threaded connection, and the materials can fill the thread gap to increase the sealing effect, but the method is troublesome and cannot realize quick connection. Welding equipment is needed for welding the water pipe, so that the welding equipment is troublesome, the indoor construction has fire hazard, the quick connection cannot be realized, and the disassembly is inconvenient. The flange plate is connected in a manner that a plurality of groups of bolts and nuts are required to be locked, and the connection manner is not rapid.

Disclosure of utility model

In view of the problem that the speed of general threaded connection, welding and flange connection of water pipes is not fast enough, the application provides a quick connection structure of an indoor water supply pipeline. In order to achieve the purpose, the application adopts the following technical scheme.

The utility model provides an indoor water supply pipeline quick connect structure, includes first water pipe, second water pipe, connecting pipe, first swivel nut, second swivel nut, first sealing washer, second sealing washer, first pressure subassembly and second pressure subassembly that supports. And two ends of the connecting pipe are respectively sleeved with the first water pipe and the second water pipe.

One end of the first screw sleeve surrounds the first water pipe, and the other end of the first screw sleeve is in threaded connection with the connecting pipe. The first sealing ring and the first pressing component are both arranged in the first screw sleeve. The first sealing ring is in seamless tight contact with the first water pipe and the first screw sleeve. The first pressing component presses the first sealing ring to one end face of the connecting pipe.

One end of the second screw sleeve surrounds the second water pipe, and the other end of the second screw sleeve is in threaded connection with the connecting pipe. The second sealing ring and the second pressing component are both arranged in the second screw sleeve. The second sealing ring is in seamless tight contact with the second water pipe and the second screw sleeve. The second pressing component presses the second sealing ring to the other end face of the connecting pipe.

Through adopting above-mentioned technical scheme, gap between first sealing washer and second sealing washer shutoff connecting pipe and first water pipe, the second water pipe is pressed the subassembly through first support and is pressed the subassembly with the second and strengthen sealedly, and sealed effectual. The first water pipe and the second water pipe can be connected quickly. When the screw sleeve is disassembled, the connection can be released only by rotating the first screw sleeve and the second screw sleeve.

The indoor water supply pipeline quick connection structure adopts a preferable scheme that the first screw sleeve is engraved with internal threads, and all the internal threads of the first screw sleeve are connected with external threads of the connecting pipe. The second screw sleeve is carved with internal threads, and all internal threads of the second screw sleeve are connected with external threads of the connecting pipe.

By adopting the technical scheme, the internal thread of the first screw sleeve can not contact the first sealing ring, and the first sealing ring can not be extruded and damaged. The internal thread of the second screw sleeve can not contact the second sealing ring, and extrusion damage to the second sealing ring can not be caused.

The indoor water supply pipeline quick connection structure is characterized in that the first pressing component comprises a plurality of first springs and a first pressing ring. The two ends of each first spring are respectively fixed with the first threaded sleeve and the first compression ring. The first compression ring is propped against the end face of the first sealing ring. The second pressing assembly comprises a plurality of second springs and a second pressing ring. The two ends of each second spring are respectively fixed with the second threaded sleeve and the second compression ring. The second compression ring is propped against the end face of the second sealing ring.

By adopting the technical scheme, the first compression rings are pushed by the first springs to extrude the first sealing rings, so that gaps between the connecting pipes and the first water pipes are sealed. The second springs push the second compression ring to compress the second sealing ring, thereby sealing a gap between the connecting pipe and the second water pipe.

In a preferred embodiment of the quick connection structure for an indoor water supply pipe, the plurality of first springs are parallel to each other and surround the first water pipe. The plurality of second springs are mutually parallel and surround the outside of the second water pipe.

Through adopting above-mentioned technical scheme, a plurality of first springs are from the balanced promotion first clamping ring of week side each direction, and a plurality of second springs are from the balanced promotion second clamping ring of week side each direction for first clamping ring is smooth and easy to slide along first water pipe, and the smooth and easy along second water pipe of second clamping ring slides.

The indoor water supply pipeline quick connection structure is characterized in that one end of the first screw sleeve, which surrounds the first water pipe, is provided with a first inner annular surface perpendicular to the first water pipe. One ends of the first springs are fixed on the first inner annular surface.

By adopting the technical scheme, the first inner ring supports the first spring, and does not interfere with the compression process of the first spring.

The indoor water supply pipeline quick connection structure is characterized in that one end of the second screw sleeve, which surrounds the second water pipe, is provided with a second inner annular surface perpendicular to the second water pipe. One ends of the second springs are fixed on the second inner annular surface.

By adopting the technical scheme, the second inner ring supports the second spring, and does not interfere with the compression process of the second spring.

The indoor water supply pipeline quick connection structure is characterized in that the first water pipe, the first screw sleeve and the connecting pipe form a first cavity. The first sealing ring and the first pressing component are both arranged in the first cavity. And in the first cavity, the inner diameter of the first compression ring is 0.5-1 mm larger than the outer diameter of the first water pipe, and the outer diameter of the first compression ring is 0.5-1 mm smaller than the inner diameter of the first screw sleeve.

Through adopting above-mentioned technical scheme, when rotatory first swivel nut, first clamping ring is difficult to block on the outer wall of first water pipe, and then every first spring is difficult to crooked, completion that can be better is connected or is dismantled.

The indoor water supply pipeline quick connection structure has the preferable scheme that the second water pipe, the second screw sleeve and the connecting pipe enclose a second cavity. The second sealing ring and the second pressing component are both arranged in the second cavity. And in the second cavity, the inner diameter of the second compression ring is 0.5-1 mm larger than the outer diameter of the second water pipe, and the outer diameter of the second compression ring is 0.5-1 mm smaller than the inner diameter of the second screw sleeve.

Through adopting above-mentioned technical scheme, when rotatory second swivel nut, the second clamping ring is difficult to block on the outer wall of second water pipe, and then every second spring is difficult to crooked, completion that can be better is connected or is dismantled.

The indoor water supply pipeline quick connection structure has the preferable scheme that the cross sections of the first sealing ring and the second sealing ring are square.

Through adopting above-mentioned technical scheme, the interior anchor ring of first sealing washer and the outer wall of first water pipe are the face contact, and area of contact is big, and is sealed effectual. The outer ring surface of the first sealing ring is in surface contact with the inner wall of the first screw sleeve, so that the contact area is large, and the sealing effect is good. The inner ring surface of the second sealing ring is in surface contact with the outer wall of the second water pipe, so that the contact area is large, and the sealing effect is good. The outer ring surface of the second sealing ring is in surface contact with the inner wall of the second screw sleeve, so that the contact area is large, and the sealing effect is good.

The indoor water supply pipeline quick connection structure adopts a preferable scheme that the first sealing ring is made of nitrile rubber, chloroprene rubber or butyl rubber. The second sealing ring is made of nitrile rubber, chloroprene rubber or butyl rubber.

By adopting the technical scheme, the materials have good elasticity and toughness, can be moderately stretched and compressed as sealing materials, provide good sealing effect after being compressed in the connecting structure, and have durability.

In summary, the quick connecting structure for the indoor water supply pipeline has the advantages that the first sealing ring and the second sealing ring seal gaps between the connecting pipe and the first water pipe and between the connecting pipe and the second water pipe, and the sealing is enhanced through the first pressing component and the second pressing component, so that the sealing effect is good. The quick connection of first water pipe and second water pipe can be carried out to this structure to when dismantling first water pipe and second water pipe, also only need rotatory first swivel nut and second swivel nut, then can release the connection of first water pipe and second water pipe.

Drawings

Fig. 1 is an external structural view of a rapid connection structure of an indoor water supply pipe.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is an enlarged view of area a of fig. 2.

Fig. 4 is a structural diagram of the first sealing ring, the second sealing ring, the first pressing component and the second pressing component hidden in fig. 2.

Reference numeral 1, a first water pipe; 2, a second water pipe, 3, a connecting pipe, 4, a first screw sleeve, 5, a second screw sleeve, 6, a first sealing ring, 7, a second sealing ring, 8, a first pressing component, 9, a second pressing component, 10, a first cavity, 11, a second cavity, 801, a first spring, 802, a first compression ring, 901, a second spring, 902, a second compression ring, 401, a first inner ring surface, 501 and a second inner ring surface.

Detailed Description

The technical solutions of the embodiments will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden, are within the scope of the present application based on the following examples.

Referring to fig. 1, a rapid connection structure of an indoor water supply pipe includes a first water pipe 1, a second water pipe 2, a connection pipe 3, a first screw sleeve 4 and a second screw sleeve 5.

Fig. 2 is an internal structural view of fig. 1 in cross section, and fig. 3 is an enlarged view of a region a of fig. 2. As shown in fig. 3, the indoor water supply pipeline quick connection structure further comprises a first sealing ring 6, a second sealing ring 7, a first abutting component 8 and a second abutting component 9.

The two ends of the connecting pipe 3 are respectively sleeved with the first water pipe 1 and the second water pipe 2. The whole connecting pipe 3 is provided with external threads.

One end of the first screw sleeve 4 surrounds the first water pipe 1, and the other end is carved with internal threads, and the internal threads are completely connected to external threads of the connecting pipe 3, so that the first sealing ring 6 is prevented from being damaged due to the fact that the internal threads extrude the first sealing ring 6. The first screw sleeve 4 and the first water pipe 1 may be of a split type structure.

Similarly, one end of the second screw sleeve 5 surrounds the second water pipe 2, and the other end is carved with an internal thread, and the internal thread is completely connected to the external thread of the connecting pipe 3, so that the second sealing ring 7 is prevented from being damaged due to the extrusion of the internal thread by the second sealing ring 7. The second screw sleeve 5 and the second water pipe 2 may be of a split type structure.

As shown in fig. 4, one end surface of the first water tube 1, the first screw sleeve 4 and the connecting tube 3 enclose a first cavity 10. As shown in fig. 3, the first seal ring 6 and the first pressing member 8 are both installed in the first cavity 10. The inner ring surface of the first sealing ring 6 is in seamless tight contact with the first water pipe 1, and the outer ring surface of the first sealing ring 6 is in seamless tight contact with the first threaded sleeve 4. The first pressing component 8 presses the end face of the first sealing ring 6 against one end face of the connecting pipe 3.

As shown in fig. 4, the second water pipe 2, the second screw sleeve 5 and the other end surface of the connecting pipe 3 enclose a second cavity 11. As shown in fig. 3, the second sealing ring 7 and the second pressing assembly 9 are both installed in the second cavity 11. The inner ring surface of the second sealing ring 7 is in seamless tight contact with the second water pipe 2, and the outer ring surface of the second sealing ring 7 is in seamless tight contact with the second threaded sleeve 5. The second pressing component 9 presses the end face of the second sealing ring 7 against the other end face of the connecting pipe 3.

To foretell indoor water supply pipeline quick connect structure, gap between first sealing washer 6 and second sealing washer 7 shutoff connecting pipe 3 and first water pipe 1, the second water pipe 2 is sealed through first support and is pressed subassembly 8 and second and support and press subassembly 9 reinforcing, and sealed effectual. The installation of the rapid connection structure of the indoor water supply pipeline comprises the following three steps.

First, when the first sealing ring 6 is installed, the first screw sleeve 4 and the first pressing component 8 are sleeved outside the first water pipe 1, then the first sealing ring 6 is stretched and plugged between the first water pipe 1 and the first screw sleeve 4, and the position of the first sealing ring 6 is closer to the end of the first water pipe 1 than the first mortgage component.

And in the second step, when the second sealing ring 7 is installed, the second screw sleeve 5 and the second pressing component 9 are sleeved outside the second water pipe 2, and then the second sealing ring 7 is stretched and plugged between the second water pipe 2 and the second screw sleeve 5, and the position of the second sealing ring 7 is closer to the end head of the second water pipe 2 than the second mortgage component.

And thirdly, sleeving the connecting pipe 3 outside the ends of the first water pipe 1 and the second water pipe 2, rotating the first screw sleeve 4 and the second screw sleeve 5, enabling the internal threads of the first screw sleeve 4 to be connected with the external threads of the connecting pipe 3, enabling the internal threads of the second screw sleeve 5 to be connected with the external threads of the connecting pipe 3, in the process, the first pressing component 8 pushes the first sealing ring 6 to tightly press one end face of the connecting pipe 3, the second pressing component 9 pushes the second sealing ring 7 to tightly press the other end face of the connecting pipe 3, and completing quick connection of the first water pipe 1 and the second water pipe 2, wherein the connected first water pipe 1, connecting pipe 3 and second water pipe 2 have good sealing performance. When the first screw sleeve 4 and the second screw sleeve 5 are disassembled, the first water pipe 1, the connecting pipe 3 and the second water pipe 2 can be disconnected with each other by only rotating the first screw sleeve. The installation and the dismantlement of this structure are all very quick convenient.

The first pressing assembly 8 includes a plurality of first springs 801 and a first pressing ring 802, for example, six first springs 801. Both ends of each first spring 801 are fixed to the first screw sleeve 4 and the first pressing ring 802, respectively. The first compression rings 802 are pushed by the first springs 801 to extrude the first sealing rings 6, the first springs 801 directly extrude the first sealing rings 6 at a plurality of points, and the first sealing rings 6 and one end face of the connecting pipe 3 are pushed to be propped against each other, so that gaps between the connecting pipe 3 and the first water pipe 1 are sealed, the sealing effect is good, and water leakage is effectively prevented.

The second pressing assembly 9 comprises a plurality of second springs 901 and a second pressing ring 902, for example comprising six second springs 901. Both ends of each second spring 901 are fixed to the second screw sleeve 5 and the second pressing ring 902, respectively. The second springs 901 push the second compression ring 902 to extrude the second sealing ring 7, the second springs 901 directly extrude a plurality of points of the second sealing ring 7, and the positions of the second sealing ring 7 and the other end face of the connecting pipe 3 are pushed to be abutted, so that the gap between the connecting pipe 3 and the second water pipe 2 is sealed, the sealing effect is good, and water leakage is effectively prevented.

In a preferred embodiment, a plurality of first springs 801 are disposed in parallel with each other in the first cavity 10 in a ring shape, and the plurality of first springs 801 uniformly push the first pressing ring 802 from all directions on the circumferential side. Further preferably, in the first cavity 10, the inner diameter of the first press ring 802 is 0.5 to 1mm larger than the outer diameter of the first water pipe 1, and the outer diameter of the first press ring 802 is 0.5 to 1mm smaller than the inner diameter of the first screw sleeve 4. When the pipeline is installed, when the first threaded sleeve 4 is rotated, the first compression ring 802 is not easy to clamp on the outer wall of the first water pipe 1, the first compression ring 802 can smoothly slide along the first water pipe 1, each first spring 801 is not easy to bend, the first pressing component 8 can effectively push and squeeze the first sealing ring 6, the sealing effect is enhanced, and the quick connection and the disassembly of the pipeline are better completed.

In a preferred embodiment, a plurality of second springs 901 are disposed in parallel with each other in a ring in the second cavity 11, and the plurality of second springs 901 uniformly push the second pressing ring 902 from all directions on the circumferential side. Further preferably, in the second cavity 11, the inner diameter of the second pressure ring 902 is 0.5 to 1mm larger than the outer diameter of the second water pipe 2, and the outer diameter of the second pressure ring 902 is 0.5 to 1mm smaller than the inner diameter of the second screw 5. When the pipeline is installed, when the second threaded sleeve 5 is rotated, the second pressing ring 902 is not easy to clamp on the outer wall of the second water pipe 2, the second pressing ring 902 can smoothly slide along the second water pipe 2, each second spring 901 is not easy to bend, the second pressing component 9 can effectively push and squeeze the second sealing ring 7, the sealing effect is enhanced, and the quick connection and the disassembly of the pipeline are better completed.

The first screw sleeve 4 surrounds one end of the first water tube 1 perpendicular to the first water tube 1 such that the inner surface of the end is a first inner annulus perpendicular to the first water tube 1. One end of each of the plurality of first springs 801 is fixed to the first inner annular surface 401, and the first inner annular surface 401 can better support the plurality of first springs 801. One end of the first threaded sleeve 4 connected with the connecting pipe 3 is a circular ring coaxial with the connecting pipe 3 and the first water pipe 1, so that the inner wall of the circular ring is parallel to the outer wall of the first water pipe 1, and a plurality of first springs 801 are mounted conveniently.

The second screw sleeve 5 surrounds one end of the second water tube 2 perpendicularly to the second water tube 2 such that the inner surface of the end is a second inner annulus perpendicular to the second water tube 2. One end of each of the plurality of second springs 901 is fixed to the second inner annular surface 501, and the second inner annular surface 501 can better support the plurality of second springs 901. One end of the second screw sleeve 5 connected with the connecting pipe 3 is a circular ring coaxial with the connecting pipe 3 and the second water pipe 2, so that the inner wall of the circular ring is parallel to the outer wall of the second water pipe 2, and a plurality of second springs 901 are conveniently installed.

In order to strengthen the sealing connection between each sealing ring and the screw sleeve as well as the sealing butt between each sealing ring and the water pipe as well as between each sealing ring and the connecting pipe 3, in a preferred embodiment, the first sealing ring 6 and the second sealing ring 7 are made of materials with square cross sections, so that the inner ring surface of the first sealing ring 6 is in surface contact with the outer wall of the first water pipe 1, the contact area is large, and the sealing effect is good. The outer ring surface of the first sealing ring 6 is in surface contact with the inner wall of the first screw sleeve 4, so that the contact area is large, and the sealing effect is good. The end face of the first sealing ring 6 is in surface contact with one end face of the connecting pipe 3, so that the contact area is large, and the sealing effect is good. And the inner ring surface of the second sealing ring 7 is in surface contact with the outer wall of the second water pipe 2, so that the contact area is large, and the sealing effect is good. The outer ring surface of the second sealing ring 7 is in surface contact with the inner wall of the second screw sleeve 5, so that the contact area is large, and the sealing effect is good. The end face of the second sealing ring 7 is in surface contact with the other end face of the connecting pipe 3, so that the contact area is large, and the sealing effect is good.

The material of the first sealing ring 6 can be nitrile rubber, chloroprene rubber or butyl rubber. The material of the second sealing ring 7 can be nitrile rubber, chloroprene rubber or butyl rubber. These materials have good elasticity and toughness, can be moderately stretched and compressed as a sealing material, provide good sealing effect after being compressed in the present connection structure, and have durability.

According to the quick connecting structure for the indoor water supply pipeline, the first sealing ring 6 and the second sealing ring 7 are adopted to seal gaps among the connecting pipe 3, the first water pipe 1 and the second water pipe 2, and the sealing effect of the first sealing ring 6 and the second sealing ring 7 is enhanced through the first abutting component 8 and the second abutting component 9. The structure can be used for quickly connecting the first water pipe 1 and the second water pipe 2, and when the first water pipe 1 and the second water pipe 2 are disassembled, only the first screw sleeve 4 and the second screw sleeve 5 are required to be rotated, so that the connection between the first water pipe 1 and the second water pipe 2 can be quickly removed.

Although the present application has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present application.

Claims (10)

1. The quick connecting structure for the indoor water supply pipeline is characterized by comprising a first water pipe (1), a second water pipe (2), a connecting pipe (3), a first screw sleeve (4), a second screw sleeve (5), a first sealing ring (6), a second sealing ring (7), a first pressing component (8) and a second pressing component (9), wherein two ends of the connecting pipe (3) are respectively sleeved with the first water pipe (1) and the second water pipe (2) in a ring mode;

One end of the first screw sleeve (4) surrounds the first water pipe (1), the other end of the first screw sleeve is in threaded connection with the connecting pipe (3), the first sealing ring (6) and the first pressing component (8) are arranged in the first screw sleeve (4), the first sealing ring (6) is in seamless tight contact with the first water pipe (1) and the first screw sleeve (4), and the first pressing component (8) presses the first sealing ring (6) on one end face of the connecting pipe (3);

One end of the second screw sleeve (5) surrounds the second water pipe (2), the other end of the second screw sleeve is in threaded connection with the connecting pipe (3), the second sealing ring (7) and the second pressing component (9) are arranged in the second screw sleeve (5), the second sealing ring (7) is in seamless tight contact with the second water pipe (2) and the second screw sleeve (5), and the second pressing component (9) presses the second sealing ring (7) on the other end face of the connecting pipe (3).

2. The quick connection structure for an indoor water supply pipe according to claim 1, wherein the first screw sleeve (4) is engraved with internal threads, all the internal threads of the first screw sleeve (4) are connected to the external threads of the connection pipe (3), the second screw sleeve (5) is engraved with internal threads, and all the internal threads of the second screw sleeve (5) are connected to the external threads of the connection pipe (3).

3. The quick connection structure for indoor water supply pipelines according to claim 1, wherein the first pressing component (8) comprises a plurality of first springs (801) and first pressing rings (802), wherein two ends of each first spring (801) are respectively fixed with the first threaded sleeve (4) and the first pressing rings (802), and the first pressing rings (802) are pressed against the end surfaces of the first sealing rings (6);

The second pressing assembly (9) comprises a plurality of second springs (901) and second pressing rings (902), two ends of each second spring (901) are respectively fixed with the second threaded sleeve (5) and the second pressing rings (902), and the second pressing rings (902) are pressed against the end faces of the second sealing rings (7).

4. A quick connection structure for an indoor water supply pipe according to claim 3, wherein the plurality of first springs (801) are wound around the first water pipe (1) in parallel with each other, and the plurality of second springs (901) are wound around the second water pipe (2) in parallel with each other.

5. The quick connection structure for indoor water supply pipes according to claim 3 or 4, wherein the first screw sleeve (4) has a first inner ring surface (401) perpendicular to the first water pipe (1) around one end of the first water pipe (1), and one ends of the plurality of first springs (801) are fixed to the first inner ring surface (401).

6. The quick connect structure for indoor water supply pipes as claimed in claim 3 or 4, wherein said second screw sleeve (5) has a second inner ring surface (501) perpendicular to said second water pipe (2) around one end of said second water pipe (2), and one ends of said plurality of second springs (901) are fixed to said second inner ring surface (501).

7. The quick connection structure for indoor water supply pipelines according to claim 3, wherein the first water pipe (1), the first screw sleeve (4) and the connecting pipe (3) enclose a first cavity (10), and the first sealing ring (6) and the first pressing component (8) are both arranged in the first cavity (10);

In the first cavity (10), the inner diameter of the first compression ring (802) is 0.5-1 mm larger than the outer diameter of the first water pipe (1), and the outer diameter of the first compression ring (802) is 0.5-1 mm smaller than the inner diameter of the first screw sleeve (4).

8. The quick connection structure for indoor water supply pipelines according to claim 3, wherein the second water pipe (2), the second screw sleeve (5) and the connecting pipe (3) enclose a second cavity (11), and the second sealing ring (7) and the second pressing component (9) are both arranged in the second cavity (11);

In the second cavity (11), the inner diameter of the second pressing ring (902) is 0.5-1 mm larger than the outer diameter of the second water pipe (2), and the outer diameter of the second pressing ring (902) is 0.5-1 mm smaller than the inner diameter of the second screw sleeve (5).

9. The quick connection structure for indoor water supply pipes according to claim 1, wherein the cross sections of the first sealing ring (6) and the second sealing ring (7) are square.

10. The quick connection structure for indoor water supply pipes according to claim 1, wherein the first sealing ring (6) is made of nitrile rubber, chloroprene rubber or butyl rubber, and the second sealing ring (7) is made of nitrile rubber, chloroprene rubber or butyl rubber.