Low-lead copper connecting pipe fitting

Abstract

The utility model provides a low-lead copper connecting pipe fitting. The low-lead copper connecting pipe fitting comprises a first pipe fitting and a first clamping sleeve which are made of low-lead copper materials. One end of the first pipe fitting is inserted into one end of a connecting pipe made of CPVC materials, a plurality of first annular convex teeth distributed at intervals in the axial direction of the first pipe fitting are arranged on the outer wall of one end of the first pipe fitting, and the outer edge of each first annular convex tooth is tightly attached to the inner wall of one end of the connecting pipe in a sealed mode. A first annular step is arranged on the outer wall of the first pipe fitting, and one end of the connecting pipe abuts against the first annular step; one end of the connecting pipe is sleeved with the first clamping sleeve, and after the first clamping sleeve is clamped and pressed by the clamping and pressing device, one end of the connecting pipe is tightly held on one end of the first pipe fitting; after being connected with a connecting pipe, the anti-falling device has the advantage of being good in anti-falling effect.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting pipe fittings, in particular to a low-lead copper connecting pipe fitting. Background Art

[0002] When low-lead copper pipe fittings currently on the market are connected to connecting pipes made of CPVC material, one end of the pipe fitting is inserted into one end of the connecting pipe, and the outer wall of one end of the pipe fitting is provided with a plurality of annular protrusions spaced along the axial direction of the pipe fitting, and the outer edge of each annular protrusion is tightly sealed with the inner wall of one end of the connecting pipe; however, in the above structure, since one end of the pipe fitting is connected to the connecting pipe only by fitting and plugging, it is easy for the pipe fitting to detach from the connecting pipe. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a low-lead copper connecting pipe fitting, which has the advantage of good anti-slip effect after being connected to the connecting pipe.

[0004] The utility model provides a low-lead copper connecting pipe fitting, comprising a first pipe fitting and a first ferrule made of low-lead copper material; one end of the first pipe fitting is inserted into one end of a connecting pipe made of CPVC material, and a plurality of first annular protrusions spaced along the axial direction of the first pipe fitting are provided on the outer wall of the one end of the first pipe fitting, and the outer edge of each first annular protrusion is tightly sealed with the inner wall of one end of the connecting pipe, and a first annular step is provided on the outer wall of the first pipe fitting, and one end of the connecting pipe abuts against the first annular step; the first ferrule is sleeved on the outside of one end of the connecting pipe, and the first ferrule is clamped by a clamping device to clamp one end of the connecting pipe to one end of the first pipe fitting.

[0005] After adopting the above structure, the utility model can tighten one end of the connecting pipe to one end of the first pipe fitting after one end of the first pipe fitting is fitted and inserted tightly, and when the first clamping sleeve sleeved on the outside of one end of the connecting pipe is clamped by the clamping device, the first clamping sleeve can clamp one end of the connecting pipe to one end of the first pipe fitting, thereby improving the connection reliability between the first pipe fitting and the connecting pipe, that is, improving the anti-detachment effect of the first pipe fitting and the connecting pipe.

[0006] In a possible embodiment, an annular groove is provided on the outer wall of the other end of the first pipe fitting, and a first sealing ring is embedded in the annular groove; the other end of the first pipe fitting and one end of the connecting pipe are both inserted into the water inlet on the valve body, and the other end of the first pipe fitting is circumferentially sealed with the water inlet via the first sealing ring, and a locking sleeve threadedly connected to the water inlet is sleeved on the water inlet of the valve body, and the inner edge of the outer end of the locking sleeve abuts against the outer end of the first ferrule to press the first ferrule onto the outer end of the water inlet; after adopting this structure, the other end of the first pipe fitting and one end of the connecting pipe are both inserted into the valve body. After the first pipe fitting is inserted into the water inlet, the other end of the first pipe fitting can be reliably sealed with the water inlet in a circumferential direction through the first sealing ring; in addition, after the locking sleeve is threadedly connected to the water inlet, the inner edge of the outer end portion of the locking sleeve can abut against the outer end portion of the first ferrule to press the first ferrule onto the outer end portion of the water inlet, thereby achieving the locking of the first pipe fitting, the connecting pipe and the valve body; in addition, in the above structure, since the first pipe fitting and the water inlet of the valve body are circumferentially sealed through the first sealing ring, water leakage will not occur even if the locking sleeve is not completely tightened, that is, water leakage can be effectively avoided.

[0007] In a possible embodiment, the low-lead copper connecting pipe fitting also includes a second pipe fitting and a second ferrule made of low-lead copper material; one end of the second pipe fitting is inserted into the other end of the connecting pipe, and the outer wall of one end of the second pipe fitting is provided with a plurality of second annular protrusions spaced along the axial direction of the second pipe fitting, and each second annular protrusion is tightly sealed with the inner wall of the other end of the connecting pipe; a second annular step is provided on the outer wall of the second pipe fitting, and the other end of the connecting pipe abuts against the second annular step; one end of the second ferrule is sleeved on the outside of the second pipe fitting and clamped with the second pipe fitting, and the other end of the second ferrule is clamped by the clamping device to hold the other end of the connecting pipe tightly. On one end of the second pipe fitting; by adopting this structure, one end of the second pipe fitting can be conveniently connected to the other end of the connecting pipe and achieve the purpose of circumferential sealing. In addition, under the action of the second annular step, when the other end of the connecting pipe is sleeved with one end of the second pipe fitting, the second annular step can abut against the other end of the connecting pipe, thereby achieving the limitation of the connecting pipe and the second pipe fitting; in addition, after the other end of the second ferrule is clamped by the clamping device, the other end of the second ferrule can hold the other end of the connecting pipe tightly on one end of the second pipe fitting, thereby further improving the reliability of the connection between the other end of the connecting pipe and one end of the second pipe fitting.

[0008] In one possible embodiment, an annular groove is provided on the outer wall of the second pipe fitting, and one end of the second ferrule is pre-clamped on the annular groove after radial extrusion; by adopting this structure, one end of the second ferrule can be pre-clamped on the annular groove after radial extrusion, that is, one end of the second ferrule can be reliably clamped together with the second pipe fitting.

[0009] In one possible embodiment, a radially outwardly protruding annular expansion portion is provided on the side wall of the other end of the second pipe fitting, and an annular embedding groove is naturally formed on the inner side of the annular expansion portion, and a second sealing ring is embedded in the annular embedding groove; when the end of the water inlet pipe is inserted into the other end of the second pipe fitting and the annular expansion portion is clamped by the clamping device, the second sealing ring is used to hold the water inlet pipe tightly and seal the gap between the water inlet pipe and the second pipe fitting; by adopting this structure, when the end of the water inlet pipe is inserted into the other end of the second pipe fitting and the annular expansion portion is clamped by the clamping device, the second sealing ring can hold the water inlet pipe tightly and seal the gap between the water inlet pipe and the second pipe fitting, that is, the other end of the second pipe fitting can be conveniently fixed to the water inlet pipe and achieve the purpose of circumferential sealing.

[0010] In one possible embodiment, a third annular step is provided on the inner wall of the other end of the second pipe fitting, and the third annular step is used to abut against the end of the water inlet pipe to achieve axial limitation of the second pipe fitting and the water inlet pipe; after adopting this structure, when the water inlet pipe and the other end of the second pipe fitting are fitted and plugged in, the third annular step can abut against the end of the water inlet pipe to achieve axial limitation of the second pipe fitting and the water inlet pipe, and can prompt the installer whether the water inlet pipe and the second pipe fitting are plugged in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic cross-sectional view of the utility model;

[0012] Figure 2 for Figure 1 The schematic diagram of the structure after enlarging at A in the middle;

[0013] Figure 3 for Figure 1 Schematic diagram of the structure after enlarging point B in the middle. DETAILED DESCRIPTION

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1-3 As shown, an embodiment of the present application discloses a low-lead copper connecting pipe fitting, comprising a first pipe fitting 1 and a first ferrule 2 made of low-lead copper material; one end of the first pipe fitting 1 is inserted into one end of a connecting pipe 3 made of CPVC material, and a plurality of first annular protrusions 11 spaced apart along the axial direction of the first pipe fitting 1 are provided on the outer wall of one end of the first pipe fitting 1, and the outer edge of each first annular protrusion 11 is tightly sealed with the inner wall of one end of the connecting pipe 3, and a first annular step 12 is provided on the outer wall of the first pipe fitting 1, and one end of the connecting pipe 3 is abutted against the first annular step 12; the first ferrule 2 is sleeved on the outside of one end of the connecting pipe 3, and the first ferrule 2 is clamped by the clamping device to clamp one end of the connecting pipe 3 tightly on one end of the first pipe fitting 1.

[0019] An annular groove 13 is provided on the outer wall of the other end of the first pipe fitting 1, and a first sealing ring 4 is embedded in the annular groove 13; the other end of the first pipe fitting 1 and one end of the connecting pipe 3 are inserted into the water inlet 51 on the valve body 5, and the other end of the first pipe fitting 1 is circumferentially sealed with the water inlet 51 through the first sealing ring 4, and a locking sleeve 52 threadedly connected to the water inlet 51 is sleeved on the water inlet 51 of the valve body 5, and the inner edge of the outer end of the locking sleeve 52 abuts against the outer end of the first ferrule 2 to press the first ferrule 2 onto the outer end of the water inlet 51; after adopting this structure, the other end of the first pipe fitting and one end of the connecting pipe are After both ends are inserted into the water inlet on the valve body, the other end of the first pipe fitting can be reliably sealed with the water inlet in a circumferential manner through the first sealing ring; in addition, after the locking sleeve is threadedly connected to the water inlet, the inner edge of the outer end portion of the locking sleeve can abut against the outer end portion of the first ferrule to press the first ferrule onto the outer end portion of the water inlet, thereby achieving the locking of the first pipe fitting, the connecting pipe and the valve body; in addition, in the above structure, since the first pipe fitting and the water inlet of the valve body are circumferentially sealed through the first sealing ring, water leakage will not occur even if the locking sleeve is not completely tightened, that is, water leakage can be effectively avoided.

[0020] The low-lead copper connecting pipe fitting also includes a second pipe fitting 6 and a second ferrule 7 made of low-lead copper material; one end of the second pipe fitting 6 is inserted into the other end of the connecting pipe 3, and the outer wall of one end of the second pipe fitting 6 is provided with a plurality of second annular protrusions 61 spaced apart along the axial direction of the second pipe fitting 6, and each second annular protrusion 61 is tightly sealed with the inner wall of the other end of the connecting pipe 3; a second annular step 62 is provided on the outer wall of the second pipe fitting 6, and the other end of the connecting pipe 3 abuts against the second annular step 62; one end of the second ferrule 7 is sleeved on the outside of the second pipe fitting 6 and clamped with the second pipe fitting 6, and the other end of the second ferrule 7 is clamped by the clamping device to clamp the other end of the connecting pipe 3 One end is tightly embraced on one end of the second pipe fitting 6; by adopting this structure, one end of the second pipe fitting can be conveniently connected to the other end of the connecting pipe and achieve the purpose of circumferential sealing. In addition, under the action of the second annular step, when the other end of the connecting pipe is sleeved with one end of the second pipe fitting, the second annular step can abut against the other end of the connecting pipe, thereby achieving the limiting of the connecting pipe and the second pipe fitting; in addition, after the other end of the second ferrule is clamped by the clamping device, the other end of the second ferrule can clamp the other end of the connecting pipe on one end of the second pipe fitting, thereby further improving the reliability of the connection between the other end of the connecting pipe and one end of the second pipe fitting.

[0021] An annular groove 63 is provided on the outer wall of the second pipe fitting 6, and one end of the second ferrule 7 is pre-clamped on the annular groove 63 after radial extrusion; by adopting this structure, one end of the second ferrule can be pre-clamped on the annular groove after radial extrusion, that is, one end of the second ferrule can be reliably clamped together with the second pipe fitting.

[0022] A radially outwardly protruding annular expansion portion 64 is provided on the side wall of the other end of the second pipe fitting 6, and an annular embedding groove 65 is naturally formed on the inner side of the annular expansion portion 64, and a second sealing ring 8 is embedded in the annular embedding groove 65; when the end of the water inlet pipe is inserted into the other end of the second pipe fitting 6 and the annular expansion portion 64 is clamped by the clamping device, the second sealing ring 8 is used to hold the water inlet pipe tightly and seal the gap between the water inlet pipe and the second pipe fitting 6; by adopting this structure, when the end of the water inlet pipe is inserted into the other end of the second pipe fitting and the annular expansion portion is clamped by the clamping device, the second sealing ring can hold the water inlet pipe tightly and seal the gap between the water inlet pipe and the second pipe fitting, that is, the other end of the second pipe fitting can be conveniently fixed to the water inlet pipe and achieve the purpose of circumferential sealing.

[0023] A third annular step 66 is provided on the inner wall of the other end of the second pipe fitting 6, and the third annular step 66 is used to abut against the end of the water inlet pipe to achieve axial limitation of the second pipe fitting 6 and the water inlet pipe; after adopting this structure, when the water inlet pipe and the other end of the second pipe fitting are fitted and plugged in, the third annular step can abut against the end of the water inlet pipe to achieve axial limitation of the second pipe fitting and the water inlet pipe, and can prompt the installer whether the water inlet pipe and the second pipe fitting are plugged in place.

[0024] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A low-lead copper connecting pipe fitting, characterized by: The invention comprises a first pipe fitting (1) and a first ferrule (2) made of low-lead copper material; one end of the first pipe fitting (1) is inserted into one end of a connecting pipe (3) made of CPVC material; a plurality of first annular protrusions (11) are provided on the outer wall of one end of the first pipe fitting (1) and are spaced apart along the axial direction of the first pipe fitting (1); the outer edge of each first annular protrusion (11) is tightly sealed with the inner wall of one end of the connecting pipe (3); a first annular step (12) is provided on the outer wall of the first pipe fitting (1); one end of the connecting pipe (3) abuts against the first annular step (12); the first ferrule (2) is sleeved on the outside of one end of the connecting pipe (3); the first ferrule (2) is clamped by a clamping device to clamp one end of the connecting pipe (3) to one end of the first pipe fitting (1).

2. The low-lead copper connecting pipe fitting according to claim 1, characterized in that: An annular groove (13) is provided on the outer wall of the other end of the first pipe fitting (1), and a first sealing ring (4) is embedded in the annular groove (13); the other end of the first pipe fitting (1) and one end of the connecting pipe (3) are both inserted into the water inlet (51) on the valve body (5), and the other end of the first pipe fitting (1) is circumferentially sealed with the water inlet (51) via the first sealing ring (4); a locking sleeve (52) threadedly connected to the water inlet (51) is sleeved on the water inlet (51) of the valve body (5), and the inner edge of the outer end of the locking sleeve (52) abuts against the outer end of the first ferrule (2) to press the first ferrule (2) onto the outer end of the water inlet (51).

3. The low-lead copper connecting pipe fitting according to claim 1 or 2, characterized in that: The low-lead copper connecting pipe fitting also includes a second pipe fitting (6) and a second ferrule (7) made of low-lead copper material; one end of the second pipe fitting (6) is inserted into the other end of the connecting pipe (3), and a plurality of second annular protrusions (61) spaced apart along the axial direction of the second pipe fitting (6) are provided on the outer wall of one end of the second pipe fitting (6), and each of the second annular protrusions (61) is tightly sealed with the inner wall of the other end of the connecting pipe (3); a second annular step (62) is provided on the outer wall of the second pipe fitting (6), and the other end of the connecting pipe (3) abuts against the second annular step (62); one end of the second ferrule (7) is sleeved on the outside of the second pipe fitting (6) and clamped with the second pipe fitting (6), and the other end of the second ferrule (7) is clamped by the clamping device to clamp the other end of the connecting pipe (3) to one end of the second pipe fitting (6).

4. The low-lead copper connecting pipe fitting according to claim 3, characterized in that: An annular clamping groove (63) is provided on the outer wall of the second pipe (6), and one end of the second clamping sleeve (7) is pre-clamped on the annular clamping groove (63) after being radially extruded.

5. The low-lead copper connecting pipe fitting according to claim 3, characterized in that: A radially outwardly protruding annular expansion portion (64) is provided on the side wall of the other end of the second pipe member (6), and an annular embedding groove (65) is naturally formed on the inner side of the annular expansion portion (64), and a second sealing ring (8) is embedded in the annular embedding groove (65); when the end of the water inlet pipe is inserted into the other end of the second pipe member (6) and the annular expansion portion (64) is clamped by the clamping device, the second sealing ring (8) is used to hold the water inlet pipe tightly and seal the gap between the water inlet pipe and the second pipe member (6).

6. The low-lead copper connecting pipe fitting according to claim 5, characterized in that: A third annular step (66) is provided on the inner wall of the other end of the second pipe member (6), and the third annular step (66) is used to abut against the end of the water inlet pipe to achieve axial limitation of the second pipe member (6) and the water inlet pipe.

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