A sealing pipe joint for a drain pipe

Abstract

The utility model relates to a sealing pipe joint for drain pipe, the pipe joint has at least two water inlets / outlets, and sealing connection structures are arranged at each water inlet / outlet, the pipe is connected through the sealing connection structure, the water inlet / outlet is a socket, the sealing connection structure includes rubber ring, clamp, the rubber ring sets up in the socket, the rubber ring end part projects the socket and is buckled on the socket, the clamp is installed on the socket, and the clamp is buckled on the rubber ring end part, the pipe inserts into the socket through the rubber ring, locks the clamp, and the clamp extrudes the rubber ring end face, makes the rubber ring tight sealing pipe and the socket, the inner wall of the clamp is provided with the batten, and the batten contacts with the rubber ring end part outer circumferential surface, when locking the clamp, the batten extrudes the rubber ring end part outer circumferential surface, reasonable in design, simple structure, rubber ring position is fixed, and the rubber ring end part is extruded from the rubber ring end part outer circumferential surface, end face two directions respectively through the clamp and the batten, makes the rubber ring tight sealing pipe and the socket, and the sealing effect is good, the extrusion of two directions is limited to prevent the rubber ring end part distortion, and the sealing is reliable.

Description

Technical Field

[0001] This utility model relates to pipe fittings, specifically to a sealing pipe fitting for drainage pipes. Background Technology

[0002] Traditional clamp-type pipe fittings have poor sealing performance.

[0003] A clamp-type sealing pipe joint is available, comprising a pipe socket and a pipe spigot. The pipe spigot is inserted into the pipe socket. The inner side of the pipe socket has a flared end. A sealing ring with a conical outer contour is slidably fitted on the outer side of the pipe spigot. The conical surface of the sealing ring extends into the flared end of the pipe socket. A pre-tightening force is applied to the sealing element by clamping, causing the sealing element to move axially. The conical section of the sealing ring is inserted between the two pipes, forming a strong seal. This design suffers from two problems: 1) The pre-tightening force applied to the seal by the clamp acts on the end face of the seal, leaving the end of the seal unrestricted. This makes it difficult to guarantee the axial movement of the seal and poses a risk of twisting and deformation at the end of the seal. Once the end of the seal is twisted and deformed, it cannot seal effectively; 2) It prioritizes sealing over connection. The clamp is mainly used to apply pre-tightening force to the seal, rather than connecting the socket and spigot of the pipe fitting (in reality, the socket and spigot of the pipe fitting are connected by a tightly sealed seal, but the seal is always an elastic element, and the connection is not reliable enough); the installation of the clamp is also not reliable enough. Utility Model Content

[0004] In view of the above problems, this utility model proposes a sealing pipe joint for drainage pipes.

[0005] The technical solution of this utility model: A sealing pipe fitting for drainage pipes, the fitting having at least two inlet / outlet ports, each inlet / outlet port being provided with a sealing connection structure for connecting pipes via the sealing connection structure, the inlet / outlet ports being sockets, the sealing connection structure including a rubber ring and a clamp, the rubber ring being disposed inside the socket, the end of the rubber ring extending out of the socket and fastening onto the socket, the clamp being installed on the socket, the clamp fastening onto the end of the rubber ring; the pipe passing through the rubber ring and inserted into the socket, the clamp being locked, the clamp pressing against the end face of the rubber ring, causing the rubber ring to expand and seal the pipe and the socket; the inner wall of the clamp being provided with ribs, the ribs contacting the outer peripheral surface of the end of the rubber ring; when the clamp is locked, the ribs pressing against the outer peripheral surface of the end of the rubber ring.

[0006] To further refine the above technical solution, a recess is provided inside the socket, and the rubber ring is located inside the recess; the rubber ring is restricted to prevent axial movement.

[0007] Further refining the above technical solution, the inner wall of the clamp is provided with a knife edge, which is opposite to the outer circumferential surface of the pipe; when the clamp is tightened, the knife edge is embedded in the outer circumferential surface of the pipe; in this way, the connection between the socket and the pipe is achieved through the clamp, making the connection between the socket and the pipe more secure; at the same time, the installation of the clamp is also more secure.

[0008] To further refine the above technical solution, the clamp is held on the socket, the inner wall of the clamp is provided with a wedge block, the outer wall of the socket is provided with a wedge groove, and the wedge block is placed in the wedge groove; when the clamp is locked, the wedge block and the wedge groove cooperate to make the clamp move axially and squeeze the end face of the rubber ring.

[0009] To further refine the above technical solution, the inner circumferential surface of the rubber ring contacts the tube, and several annular lips are evenly distributed on it; each annular lip constitutes multiple seals.

[0010] To further refine the above technical solution, the pipe fitting is an elbow, with two ports, namely two inlet / outlet ports.

[0011] The advantages of this utility model are that it has a reasonable design, simple structure, and fixed position of the rubber ring. By using clamps and ribs to squeeze the end of the rubber ring from both the outer circumference and end face, the rubber ring is tightened to seal the sealing tube and the socket, resulting in a good sealing effect. The limited compression in both directions prevents the end of the rubber ring from twisting and deforming, ensuring a reliable seal. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a sealing pipe joint for drainage pipes (in use).

[0013] Figure 2 This is a partial cross-sectional schematic diagram of a sealing pipe joint for drainage pipes (in use).

[0014] Figure 3 This is a partial cross-sectional schematic diagram of a sealing pipe joint for drainage pipes.

[0015] Figure 4 This is a schematic diagram of the cross-section of the rubber ring.

[0016] Figure 5 This is a schematic diagram of the clamp structure.

[0017] The diagram shows: 1. Pipe fitting; 2. Inlet / outlet; 2-1. Socket; 2-1-1. Sink; 2-1-2. Wedge groove; 3. Sealing connection structure; 3-1. Rubber ring; 3-1-1. Annular lip; 3-2. Clamp; 3-2-1. Wedge; 3-2-2. Knife edge; 3-2-3. Pipe; 4. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings.

[0019] like Figure 1-5As shown, a sealing pipe joint for drainage pipes includes a pipe joint 1 that is an elbow with two inlet / outlet ports 2. Each inlet / outlet port 2 is provided with a sealing connection structure 3. The inlet / outlet port 2 is a socket 2-1, with a recess 2-1-1 inside and a wedge groove 2-1-2 on the outer wall of the socket 2-1. The sealing connection structure 3 includes a rubber ring 3-1 and a clamp 3-2. The rubber ring 3-1 is evenly provided with several annular lips 3-1-1. The inner wall of the clamp 3-2 is provided with wedges 3-2-1, ribs 3-2-2, and blades 3-2-3 (the wedges 3-2-1 and blades 3-2-3 are on the sides, and the ribs 3-2-2 are in the middle). In use, first place the rubber ring 3-1 inside the socket 2-1, so that the rubber ring 3-1 is located in the countersunk groove 2-1-1, with its end extending out of the socket 2-1 and fastened to the socket 2-1; insert the pipe 4 through the rubber ring 3-1 into the socket 2-1; place the clamp 3-2 on the socket 2-1, so that the clamp 3-2 is fastened to the end of the rubber ring 3-1, the wedge 3-2-1 is placed in the wedge groove 2-1-2, the reinforcing strip 3-2-2 is in contact with the outer peripheral surface of the end of the rubber ring 3-1, and the blade 3-2-3 is in contact with the outer peripheral surface of the pipe 4. Relatively speaking, the locking clamp 3-2 contracts and simultaneously moves axially in conjunction with the wedge block 3-2-1 and the wedge groove 2-1-2, causing the clamp 3-2 to squeeze the end face of the rubber ring 3-1, the rib 3-2-2 to squeeze the outer peripheral surface of the end of the rubber ring 9, and the knife edge 3-2-3 to move relative to the outer peripheral surface of the pipe 4 and finally embed into the outer peripheral surface of the pipe 4. The end face of the rubber ring 3-1 and the outer peripheral surface of the end of the rubber ring 3-1 are squeezed, causing the rubber ring 3-1 to tighten and seal; each annular lip 3-1-1 constitutes multiple seals.

[0020] The above embodiments are only for illustrating the technical concept and features of the utility model, and are intended to enable those skilled in the art to understand the content of the utility model and implement it accordingly. They should not be construed as limiting the scope of protection of the utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the utility model should be covered within the scope of protection of the utility model.

Claims

1. A sealing pipe joint for drainage pipes, the joint having at least two inlet / outlet ports, each inlet / outlet port being provided with a sealing connection structure for connecting pipes via the sealing connection structure, the inlet / outlet ports being sockets, the sealing connection structure including a rubber ring and a clamp, the rubber ring being disposed within the socket, the end of the rubber ring extending out of the socket and fastened to the socket, the clamp being installed on the socket, the clamp fastening to the end of the rubber ring; the pipe passing through the rubber ring and inserted into the socket, the clamp being locked, the clamp pressing against the end face of the rubber ring, causing the rubber ring to expand and seal the pipe and the socket; characterized in that... The inner wall of the clamp is provided with ribs, which are in contact with the outer peripheral surface of the end of the rubber ring; when the clamp is tightened, the ribs press against the outer peripheral surface of the end of the rubber ring.

2. A sealing pipe joint for drainage pipes according to claim 1, characterized in that, A recessed groove is provided inside the socket, and the rubber ring is located inside the recessed groove.

3. A sealing pipe joint for drainage pipes according to claim 1, characterized in that, The inner wall of the clamp is provided with a knife edge, which is opposite to the outer circumferential surface of the pipe; when the clamp is tightened, the knife edge is embedded in the outer circumferential surface of the pipe.

4. A sealing pipe joint for drainage pipes according to claim 1, characterized in that, The clamp is held on the socket, and a wedge is provided on the inner wall of the clamp. A wedge groove is provided on the outer wall of the socket, and the wedge is placed in the wedge groove. When the clamp is locked, the wedge and the wedge groove cooperate to move the clamp axially and squeeze the end face of the rubber ring.

5. A sealing pipe joint for drainage pipes according to claim 1, characterized in that, The inner circumferential surface of the rubber ring contacts the tube, and several annular lips are evenly distributed on it; each annular lip constitutes multiple seals.

6. A sealing pipe joint for drainage pipes according to claim 1, characterized in that, The pipe fitting is an elbow, with two ports, namely two inlet / outlet ports.

Images