CN101514775B - Connecting mechanism for plastic water pipe joint - Google Patents

Abstract

The connection mechanism of the plastic water pipe joint includes a straight-through joint. The straight-through joint is formed with a side hole, and the side hole is connected to the side joint through the connection mechanism. The outer wall of the side hole is equipped with an arc-shaped opening guard plate, and the arc-shaped outer wall of the guard plate is formed with an end face and a top block in the opening. A fastening ring is installed on the thread of the side joint, and the side joint passes through the opening of the guard plate to make The wall surface of the fastening ring is in contact with the end face of the guard plate, and a gasket and a sealing ring are inserted on the side joint. The seal ring includes a front sealing edge and a rear pushing edge, and one side of the gasket is in contact with the top block in the guard plate , the other side of the gasket is in contact with the pushing edge of the sealing ring, and the inner expansion nozzle of the side joint and the sealing edge at the front part of the sealing ring are inserted into the side hole of the straight-through joint.

Description

Connection mechanism for plastic water pipe joints

technical field

The invention relates to a water pipe joint, in particular to a connection mechanism of a plastic water pipe joint, which is mainly used for the connection of large-diameter plastic drainage pipes and belongs to construction engineering materials.

Background technique

Large-diameter plastic drainage pipes are widely used in urban construction. Due to the large diameter, it is difficult to process integral joints such as tees and crosses, so usually only straight joints can be produced. connector. In the prior art, the connection between the side joint and the straight joint adopts a flange connection, which has the following disadvantages: First, the flange connection is a connection whose angle cannot be adjusted, for example, the angle between the straight joint port and the side joint port is 90°, However, there may be deviations in the installation of the pipeline, especially when the geographical location of the underground pipeline cannot be perpendicular to each other, the joint installation is difficult; the second is that there are several bolts in the flange connection, and it is difficult to tighten the bolts on the side close to the wall or the ground; the third is the bolts Metal fasteners such as metal fasteners are prone to rust and corrosion, and their service life is short.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a plastic with adjustable angle between the straight joint and the side joint, strong adaptability, convenient installation, labor saving, easy disassembly, non-rusting accessories and long service life. The connection mechanism of the water pipe joint.

The technical scheme of the connection mechanism of the plastic water pipe joint of the present invention is: comprising a straight-through joint, the straight-through joint is shaped on a side hole, and the side hole is connected to the side joint through the connection mechanism, and it is characterized in that the side joint is formed with an inner expansion nozzle and a side joint. The outer wall is threaded, and an arc-shaped opening guard plate is installed on the outer wall of the side hole. The arc-shaped outer wall of the guard plate is made with an end face and a top block in the opening. Through the opening of the guard plate, the wall surface of the fastening ring is in contact with the end face of the guard plate, and a gasket and a sealing ring are inserted on the side joint. The top block in the middle is in contact, the other side of the gasket is in contact with the pushing edge of the sealing ring, and the inner expansion nozzle of the side joint and the sealing edge at the front of the sealing ring are inserted into the side hole of the straight-through joint.

In the connection mechanism of the plastic water pipe joint of the present invention, when installing, the opposite side joint is put on a fastening ring, a guard plate, a gasket and a sealing ring in sequence, and then the inner expansion nozzle of the side joint is inserted together with the sealing edge of the sealing ring into the straight-through joint. In the side hole, rotate the fastening ring to push the guard plate against the outer wall of the straight-through joint. At the same time, the top block of the guard plate pushes the washer, and the washer pushes the pushing edge of the sealing ring, so that the sealing edge of the sealing ring is close to the inner expansion nozzle. Squeeze inward, and turn outward under the guidance of the inner expansion nozzle, one is to make the whole side joint assembly and the side hole of the straight-through joint hermetically connected; the other is that the connection can make a small amount of adjustment to the installation angle, which is beneficial to pipeline installation.

In the connection mechanism of the plastic water pipe joint of the present invention, the surface of the sealing ring is formed with friction ribs or corrugations, and the sealing ring is like a through cap ring, with a pushing edge and a sealing edge, and friction ribs, and the friction ribs and The outer walls of the straight fittings touch, increasing friction. There are openings in the gasket, inner and outer notches on the inner and outer walls, and outer ribs on the outer wall of the side joint, which match the inner notches of the gasket, and the inner wall of the guard plate. Positioning ribs are formed, and the positioning ribs are in contact with the outer notch of the washer. The gasket has an opening, which is conducive to the installation of the side joint. The bottom surface of the gasket is flat, and the middle part is made of grooves and ribs. The shape of the inner expansion nozzle of the joint is consistent, and the gasket has the positioning guide of the inner and outer notches, which is beneficial to promote the sealing ring. The outer wall of the fastening ring is made with convex ribs, and there is a semicircular fastening wrench. The tightening wrench is inserted into the outer wall of the fastening ring, and the tooth grooves are caught on the convex ribs, and then rotated to pull the side joints outward, and the fastening ring is pressed against the guard plate, which saves labor and is convenient for installation. The outer wall of the guard plate and the outer wall of the end face are made with reinforcing ribs, which can improve the mechanical strength of the guard plate.

Description of drawings

Fig. 1 is the sectional view of the connection mechanism of plastic water pipe joint of the present invention;

Figure 2 is a schematic diagram of the direction A of Figure 1;

Fig. 3 is a structural schematic diagram of a tightening wrench;

Fig. 4 is a schematic diagram of the bottom surface of the gasket;

Figure 5 is a schematic side view of the gasket;

Figure 6 is a schematic cross-sectional view of the sealing ring;

Fig. 7 is a schematic perspective view of the sealing ring.

Detailed ways

The invention discloses a connection mechanism of a plastic water pipe joint, as shown in Figure 1 and Figure 2, comprising a straight-through joint 1, the straight-through joint is formed with a side hole, and the side hole is connected to a side joint 2 through the connection mechanism, which is characterized in that the The connection mechanism is that the side joint 2 is shaped on the inner expansion nozzle 21 and the outer wall is shaped on the screw thread 22, and the outer wall of the side hole 11 is equipped with an arc-shaped opening guard plate 4, and the arc-shaped outer wall of the guard plate is shaped on the end face 41 and in the opening. Jack block 43, fastening ring 5 is installed on the thread 22 of side joint 2, side joint 2 passes through the opening of guard plate 4 so that the wall surface 51 of fastening ring 5 is in contact with end face 41 of guard plate 4, on side joint 2 Insert the gasket 7 and the sealing ring 3, as shown in Figure 6 and Figure 7, the sealing ring 3 includes the sealing edge 31 at the front and the pushing edge 32 at the rear, one side of the gasket 7 is in contact with the top block 43 in the guard plate 4 Contact, the other side of gasket 7 is in contact with the pushing edge 32 of sealing ring 3, and the inner expansion nozzle 21 of side joint 2 and the sealing edge 31 of sealing ring 3 front portion are inserted in the side hole 11 of straight-through joint 1. During installation, put the fastening ring 5, guard plate 4, gasket 7 and sealing ring 3 on the opposite side joint 2 in sequence (the inner wall of the fastening ring 5 can use three groups of discontinuous short threads, and the rotation is light), and then the side joint 2 The inner expansion nozzle and the sealing edge 31 of the sealing ring 3 are inserted into the side hole 21 of the straight-through joint 1, and the fastening ring 5 is rotated to push the guard plate 4 against the outer wall of the straight-through joint 1. At the same time, the top block of the guard plate 4 43 Push the gasket 7, the gasket 7 pushes the pushing edge 32 of the sealing ring 3, so that the sealing edge 31 of the sealing ring 3 is close to the inner expansion nozzle and squeezes inward, and is turned outward under the guidance of the inner expansion nozzle 21. One is to make the entire side The joint assembly is sealed and connected with the side hole 11 of the straight-through joint 1; secondly, the connection can be slightly adjusted for the installation angle, which is beneficial for pipeline installation. The surface of its described sealing ring 3 is shaped on friction ribs 33 or corrugations, and its sealing ring is like a through cap ring, with a pushing edge 32 and a sealing edge 31, and there are friction ribs 33, the friction ribs and the outer wall of the straight joint 1 contact, increasing friction. As shown in Figure 4, an opening 73 is formed in the gasket 7, an inner notch 75 and an outer notch 74 are respectively formed on the inner wall and the outer wall, and an outer rib is formed on the outer wall of the side joint 2, and the outer rib and the gasket 7 Inner notch 75 cooperates, is shaped on the inwall of guard plate 4 with positioning rib, and positioning rib contacts with outer notch 74 of gasket 7, and gasket has opening 73, is conducive to inserting side joint, and the bottom surface of gasket is plane, Groove 71 and rib 72 are shaped on the middle part, and the top is an arc surface, and the side view is like a saddle shape (as shown in Figure 5 ) and the pushing edge 32 of the arc sealing ring 3 is in contact, so that the sealing edge 31 of the sealing ring 3 is in contact with the side. The inner expansion mouth 21 shapes of joint 2 are consistent, and the gasket has had the positioning guide of the inner and outer notches, which is conducive to promoting the sealing ring. The outer wall of its fastening ring 5 is shaped on ribs 52, and a semicircular fastening wrench 6 is arranged. The structure of the fastening wrench is as shown in Figure 3. It is in contact with the rib 52 of the fastening ring. When installing, insert the semicircular tightening wrench 6 into the outer wall of the fastening ring 5, and make the tooth groove 61 catch the rib 52, and then rotate and pull to make the side joint 2 Pull outwards, the fastening ring 5 and the guard plate 4 are compressed, and the installation is labor-saving and convenient. Its guard plate 4 outer wall and the end face 41 outer wall are shaped on reinforcing ribs 42, and the reinforcing ribs can be evenly distributed on the guard plate end face 41, because the end face and the wall surface 51 of the fastening ring 5 are close to each other, after having the reinforcing ribs, it can be greatly improved. its mechanical strength.

Claims (1)

1. the bindiny mechanism of plastic water pipe joint comprises straight coupling (1), and straight coupling is shaped on lateral opening; Lateral openingly connect side connector (2), it is characterized in that described bindiny mechanism expands in side connector (2) is shaped on to chew (21) and outer wall is shaped on screw thread (22), installs lonely shape perforate backplate (4) at the outer wall of lateral opening (11) through bindiny mechanism; The lonely shape outer wall of backplate is shaped on and is shaped on jacking block (43) in end face (41) and the perforate, goes up at the screw thread (22) of side connector (2) fastening ring (5) is installed, and side connector (2) passes backplate (4) perforate makes fastening ring (5) wall (51) contact with the end face (41) of backplate (4); On side connector (2), be inserted in packing ring (7) and seal ring (3), seal ring (3) comprises the anterior sealing strip (31) and the promotion limit (32) at rear portion, and the surface of seal ring (3) is shaped on friction ribs (33) or ripple; The one side of packing ring (7) contacts with jacking block (43) in the backplate (4); The another side of packing ring (7) contacts with the promotion limit (32) of seal ring (3), and (21) are chewed in the interior expansion of side connector (2) and anterior sealing strip (31) peace of seal ring (3) is gone in lateral opening (11) of straight coupling (1), are shaped on opening (73) in the packing ring (7); Inner and outer wall be shaped on respectively inner recess (75) and outside recess (74); Outer wall at side connector (2) is shaped on outer convex rib, and outer convex rib matches with the inner recess (75) of packing ring (7), is shaped on positioning bar at the inwall of backplate (4); Positioning bar contacts with the outer recess (74) of packing ring (7); The outer wall of fastening ring (5) is shaped on convex tendon (52), and a semicircular spanner (6) that tightens up is arranged, and the inwall that tightens up spanner (6) is shaped on teeth groove (61); Teeth groove (61) contacts with fastening ring convex tendon (52), is shaped on stiffening rib (42) on backplate (4) outer wall and end face (41) outer wall.

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