Steel-plastic adapter connector locking piece of lead-in pipe

Abstract

The utility model relates to the field of lead-in pipes, in particular to a steel-plastic conversion joint locking piece of a lead-in pipe, which comprises a plastic pipe main body, and the external thread is formed outside the plastic pipe body and used for connection, an outer lantern ring is fixedly installed outside the plastic pipe body, and a limiting groove is formed in the inner surface of the external thread. According to the steel-plastic adapter connector locking piece of the lead-in pipe, through the arrangement of the plastic pipe body, the outer lantern ring, the outer thread, the limiting groove, the threaded sleeve, the threaded connector, the outer cylinder, the elastic piece, the limiting block and the steel pipe body, the firmness between the plastic pipe body and the steel pipe body can be improved; the threaded sleeve outside the steel pipe body sleeves the external thread outside the plastic pipe body, the limiting block at one end of the elastic piece is clamped in the limiting groove in the external thread for limiting connection under the elastic action of the outer barrel and the elastic piece, and then the external threaded sleeve is tightened, so that one end of the plastic pipe body is tightly attached to one end of the steel pipe body; therefore, locking connection between the plastic pipe body and the steel pipe body is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lead -in pipe, concretely relates to a steel plastic conversion joint locking piece of lead -in pipe. BACKGROUND

[0002] Lead -in pipe, also known as house -connection pipe, is an important component in building water supply system. It mainly undertakes the task of leading the water of outdoor water supply pipe network into indoor water supply pipe network, and is the connecting pipe section between outdoor water supply pipe network and indoor water supply pipe network. The steel plastic conversion joint locking piece of lead -in pipe is installed at the steel plastic conversion joint, and is a key component for enhancing the joint connection strength, preventing loosening mechanism and leakage.

[0003] Most of the existing steel plastic conversion joint locking pieces of lead -in pipe directly adopt the screw connection mode for locking, and the sealing performance is not strong through the simple screw connection mode, and the firmness is also not enough. The plastic pipe is also lack of firmness and sealing performance through high temperature shrinkage on the conversion joint.

[0004] Therefore, it is necessary to invent a steel plastic conversion joint locking piece of lead -in pipe to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a steel plastic conversion joint locking piece of lead -in pipe, which is locked by the screw sleeve outside the steel pipe body on the external thread outside the plastic pipe body, and the limiting block at one end of the elastic sheet is clamped in the limiting groove in the external thread through the elastic effect of the outer cylinder and the elastic sheet. Then, the external screw sleeve is tightened, so that one end of the plastic pipe body is tightly attached to one end of the steel pipe body, and the tight connection between the plastic pipe body and the steel pipe body is completed. Thus, the problem of the existing steel plastic conversion joint locking piece of lead -in pipe is solved, that is, most of them directly adopt the screw connection mode for locking, and the sealing performance is not strong through the simple screw connection mode, and the firmness is also not enough. The plastic pipe is also lack of firmness and sealing performance through high temperature shrinkage on the conversion joint.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a steel plastic conversion joint locking piece of lead -in pipe, comprising a plastic pipe body;

[0007] An external thread is arranged outside the plastic pipe body for connection. An outer sleeve ring is fixedly installed outside the plastic pipe body. A limiting groove is arranged on the inner surface of the external thread.

[0008] A screw sleeve is arranged outside the plastic pipe body for locking. A screw joint is arranged inside the screw sleeve. An outer cylinder is fixedly connected to one side of the screw joint. An elastic sheet is arranged on one side of the outer cylinder. A limiting block is fixedly installed outside the elastic sheet. A steel pipe body is installed inside the screw joint.

[0009] Preferably, the external thread is threadedly connected with a threaded sleeve, and the threaded sleeve is movably arranged outside the threaded joint.

[0010] Preferably, the elastic sheet is arranged in five pieces, and the five pieces of the elastic sheet are arranged in a ring array on one side of the outer cylinder.

[0011] Preferably, the limiting block on one side of the elastic sheet is movably connected with the limiting groove in the internal thread of the external thread, and the outer cylinder is used in cooperation with the external thread.

[0012] Preferably, one end of the steel pipe body is fixedly provided with a top block, and one side of the top block is provided with a first sealing ring.

[0013] Preferably, the rear of the top block is provided with a spring, one side of the spring is fixedly provided with a connecting ring, and one side of the connecting ring is provided with a second sealing ring.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are as follows:

[0015] Through the arrangement of the plastic pipe body, the sleeve ring, the external thread, the limiting groove, the threaded sleeve, the threaded joint, the outer cylinder, the elastic sheet, the limiting block and the steel pipe body, the firmness between the plastic pipe body and the steel pipe body can be improved, the threaded sleeve outside the steel pipe body is sleeved on the external thread outside the plastic pipe body, the limiting block at one end of the elastic sheet is clamped in the limiting groove in the external thread through the elastic effect of the outer cylinder and the elastic sheet, then the threaded sleeve outside is tightened, the one end of the plastic pipe body is tightly attached to the one end of the steel pipe body, and the tight connection between the plastic pipe body and the steel pipe body is completed.

[0016] Through the arrangement of the plastic pipe body, the threaded joint, the steel pipe body, the top block, the first sealing ring, the spring, the connecting ring and the second sealing ring, the sealing property between the steel pipe body and the threaded joint is improved, the threaded joint is sleeved outside the steel pipe body, the spring at the rear of the steel pipe body is extruded in the threaded joint through the connecting ring, when the one end of the plastic pipe body is extruded with the steel pipe body, the sealing property between the first sealing ring at the one end of the steel pipe body and the plastic pipe body is improved, and when the plastic pipe body extrudes the steel pipe body and the spring, the connecting ring and the second sealing ring at the rear are extruded in the threaded joint, so that the overall sealing property is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is the overall structure schematic diagram of the utility model.

[0019] Figure 2 It is the internal structure schematic view of the threaded sleeve of the utility model;

[0020] Figure 3 It is the plastic pipe main body structure schematic view of the utility model;

[0021] Figure 4 It is the outer cylinder structure schematic view of the utility model;

[0022] Figure 5 It is the steel pipe main body structure schematic view of the utility model.

[0023] Mark explanation:

[0024] 1, plastic pipe main body, 2, outer sleeve ring, 3, external thread, 4, limiting groove, 5, threaded sleeve, 6, threaded joint, 7, outer cylinder, 8, elastic sheet, 9, limiting block, 10, steel pipe main body, 11, top block, 12, first sealing ring, 13, spring, 14, connecting ring, 15, second sealing ring. Specific implementation

[0025] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in conjunction with the drawings.

[0026] The utility model provides a kind of steel plastic conversion joint locking piece of introduction pipe as shown in Figures 1-5 Including plastic pipe main body 1;

[0027] External thread 3 is opened in the outside of plastic pipe main body 1, for connecting, the outside of plastic pipe main body 1 is fixedly installed with outer sleeve ring 2, and the inside surface of external thread 3 is provided with limiting groove 4;

[0028] Threaded sleeve 5 is sleeved in the outside of plastic pipe main body 1, for locking, and the inside of threaded sleeve 5 is provided with threaded joint 6, one side of threaded joint 6 is fixedly connected with outer cylinder 7, one side of outer cylinder 7 is provided with elastic sheet 8, the outside of elastic sheet 8 is fixedly installed with limiting block 9, and steel pipe main body 10 is installed in the inside of threaded joint 6, by the threaded sleeve 5 outside steel pipe main body 10 is sleeved on the external thread 3 outside plastic pipe main body 1, the limiting block 9 of one end of elastic sheet 8 is clamped in the limiting groove 4 in the external thread 3 by the elastic action of outer cylinder 7 and elastic sheet 8, then the threaded sleeve 5 outside is tightened, so that the one end of plastic pipe main body 1 and the one end of steel pipe main body 10 are tightly close, to complete the tight locking connection between plastic pipe main body 1 and steel pipe main body 10.

[0029] As shown in Figure 1 And Figure 2As shown, the external thread 3 is threadedly connected with the threaded sleeve 5, the threaded sleeve 5 is movably arranged outside the threaded joint 6, and the external thread 3 is threadedly connected with the threaded sleeve 5, so that the connection between the plastic pipe body 1 and the steel pipe body 10 can be enhanced.

[0030] As shown in Figure 2 , Figure 4 and Figure 5 , the elastic sheet 8 is provided with five pieces, and the five elastic sheets 8 are arranged in an annular array on one side of the outer cylinder 7. The plurality of elastic sheets 8 on one side of the outer cylinder 7 have an elastic effect, and form extrusion and gripping of the plastic pipe body 1 when they are inserted into the external thread 3, thereby improving the firmness.

[0031] As shown in Figure 2 , the limiting block 9 on one side of the elastic sheet 8 is movably connected with the limiting groove 4 inside the external thread 3, and the outer cylinder 7 is used in cooperation with the external thread 3. When the outer cylinder 7 and the elastic sheet 8 are inserted into the external thread 3, the limiting block 9 on one side of the elastic sheet 8 can be limited in the limiting groove 4 in the external thread 3, thereby enhancing the firmness.

[0032] As shown in Figure 2 and Figure 5 , the steel pipe body 10 is fixedly provided with a top block 11 at one end, and the top block 11 is provided with a first sealing ring 12 on one side. When the plastic pipe body 1 and the steel pipe body 10 are combined together, the first sealing ring 12 is extruded therebetween to achieve a sealing effect.

[0033] As shown in Figure 5 , the top block 11 is provided with a spring 13 at the rear, and the spring 13 is fixedly provided with a connecting ring 14 on one side. The connecting ring 14 is provided with a second sealing ring 15 on one side. When the plastic pipe body 1 extrudes the steel pipe body 10 and the spring 13 at the rear, the connecting ring 14 and the second sealing ring 15 at the rear are extruded in the threaded joint 6, thereby improving the overall sealing performance.

[0034] The utility model works as follows: first, the steel pipe body 10 is placed in the threaded joint 6, then the threaded sleeve 5 is sleeved on the external thread 3 outside the plastic pipe body 1, when the threaded sleeve 5 is sleeved on the external thread 3, the elastic sheet 8 on one side of the internal outer cylinder 7 is extruded on the plastic pipe body 1 to clamp, thereby improving the locking performance. When the threaded sleeve 5 outside the threaded joint 6 is tightened on the external thread 3, the limiting block 9 on one side of the internal elastic sheet 8 will be clamped in the external thread 3 in the external thread 3, thereby enhancing the firmness between them. During the tightening process, the one end of the plastic pipe body 1 extrudes the top block 11 on one side of the steel pipe body 10, and the first sealing ring 12 is arranged between the top block 11 and the plastic pipe body 1, thereby achieving a sealing effect. When the plastic pipe body 1 extrudes the steel pipe body 10 and the spring 13 at the rear, the connecting ring 14 and the second sealing ring 15 at the rear are extruded in the threaded joint 6, thereby improving the overall sealing performance. In this way, the use process of the steel-plastic conversion joint locking device of the introduction pipe is completed.

[0035] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A locking component for a steel-plastic conversion joint of an inlet pipe, characterized in that: Includes the plastic pipe body (1); External thread (3) is formed on the outside of the plastic tube body (1) for connection. An outer ring (2) is fixedly installed on the outside of the plastic tube body (1). A limit groove (4) is formed on the inner surface of the external thread (3). A threaded sleeve (5) is fitted onto the outside of the plastic tube body (1) for locking. A threaded connector (6) is provided inside the threaded sleeve (5). An outer cylinder (7) is fixedly connected to one side of the threaded connector (6). A spring piece (8) is provided on one side of the outer cylinder (7). A limit block (9) is fixedly installed on the outside of the spring piece (8). A steel tube body (10) is installed inside the threaded connector (6).

2. The locking component for a steel-plastic conversion joint of an inlet pipe according to claim 1, characterized in that: The external thread (3) is threadedly connected to the threaded sleeve (5), and the threaded sleeve (5) is movably disposed outside the threaded joint (6).

3. The locking component for a steel-plastic conversion joint of an inlet pipe according to claim 1, characterized in that: The spring (8) is provided with five pieces, and the five spring (8) are arranged in a ring array on one side of the outer cylinder (7).

4. The locking component for a steel-plastic conversion joint of an inlet pipe according to claim 1, characterized in that: The limiting block (9) on one side of the spring (8) is movably engaged with the limiting groove (4) inside the external thread (3), and the outer cylinder (7) is used in conjunction with the external thread (3).

5. The locking component for a steel-plastic conversion joint of an inlet pipe according to claim 1, characterized in that: A top block (11) is fixedly installed at one end of the steel pipe body (10), and a first sealing ring (12) is provided on one side of the top block (11).

6. The locking component for a steel-plastic conversion joint of an inlet pipe according to claim 5, characterized in that: A spring (13) is provided behind the top block (11), a connecting ring (14) is fixedly installed on one side of the spring (13), and a second sealing ring (15) is provided on one side of the connecting ring (14).

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