PRESS-FITTING PIPE CONNECTOR WITH TOOTHED RING

Abstract

The present invention provides a press-fitting pipe connector with a toothed ring, including a pipe joint, a sealing ring, a toothed clamping ring, a bushing and a pipe. The pipe joint is a “-”-like round pipe with equal wall thickness, the sealing ring, the toothed clamping ring, and the bushing are assembled in an inner cavity of the pipe joint, a fitting end of the pipe joint is run through inner cavities of the bushing, the toothed clamping ring and the sealing ring in sequence, a radial pressure is applied using a press-fitting tool along an outer diameter of the pipe joint, and both ends of the pipe joint are squeezed from a pipe shape into a neck shape under the action of the pressure. Therefore, the strength index and the safety requirements of the gas, fire-fighting and heat supply pipes of the high-rise buildings can be satisfied.

Claims

1. A press-fitting pipe connector with a toothed ring, comprising: a pipe joint (1), a sealing ring (2) and a pipe (5), wherein the pipe joint (1) is a “-”-like round pipe with equal wall thickness, an annular groove segment (1a) is disposed in a middle portion of the pipe joint (1), a conical pipe (1b), a round pipe segment (1c), a sealing ring protrusion ring segment (1d) and a shrinking clamping mouth (1f) are disposed at both ends of the annular groove segment (1a) in sequence, a protrusion ring assembly segment (1e) for assembling a toothed clamping ring (3) and a bushing (4) is added between the sealing ring protrusion ring segment (1d) and the shrinking clamping mouth (1f), a sealing ring (2), the toothed clamping ring (3) and the bushing (4) are assembled in parallel in inner cavities of the sealing ring protrusion ring segment (1d) and the protrusion ring assembly segment (1e) of the toothed clamping ring (3) and the bushing (4), a fitting end of the pipe (5) is run through inner diameters of the shrinking clamping mouth (1f), the bushing (4), the toothed clamping ring (3), the sealing ring (2), the round pipe segment (1c) and the conical pipe (1b) to the annular groove segment (1a), a radial pressure is applied by a press-fitting tool along outer diameters of the round pipe segment (1c), the sealing ring protrusion ring segment (1d) and the protrusion ring assembly segment (1e) of the toothed clamping ring (3) and the bushing (4), and the round pipe segment (1c), the sealing ring protrusion ring segment (1d) and the protrusion ring assembly segment (1e) of the toothed clamping ring (3) and the bushing (4) change from a round pipe shape into a neck shape under the action of the pressure.

2. The press-fitting pipe connector of claim 1, wherein an outer diameter of the sealing ring (2) is in a half-moon shape, an inner diameter of the sealing ring (2) is in a “-”-like sawtooth shape (2a), the outer diameter of the sealing ring (2) is matched with the inner cavity of the sealing ring protrusion ring segment (1d), and the “-”-like sawtooth shape (2a) of the inner diameter of the sealing ring (2) is matched with the pipe (5).

3. The press-fitting pipe connector of claim 1, wherein the toothed clamping ring (3) is provided with ratchets (3a) which are staggeredly arranged along an inner circle of the toothed clamping ring (3).

4. The press-fitting pipe connector of claim 1, wherein the pipe joint (1) has a diameter of from DN15 to DN100 and comprises one of straight pipe joint, bend pipe joint, three-way pipe joint, and press-fitting crossover joint.

Description

BRIEF DESCRIPTIONS OF THE DRAWINGS

[0011] FIG. 1 is a structural schematic diagram of a press-fitting pipe connector with a toothed ring.

[0012] FIG. 2 is a structural schematic diagram of a pipe joint of a press-fitting pipe connector with a toothed ring.

[0013] FIG. 3 is a structural schematic diagram of a sealing ring of a press-fitting pipe connector with a toothed ring.

[0014] FIG. 4 is a structural schematic diagram of a toothed clamping ring of a press-fitting pipe connector with a toothed ring.

[0015] FIG. 5 is a structural schematic diagram of a bushing of a press-fitting pipe connector with a toothed ring.

[0016] Numerals of the drawings are described below: 1. pipe joint, 1a. annular groove segment, 1b. conical pipe, 1c. round pipe segment, 1d. sealing ring protrusion ring segment, 1e. protrusion ring assembly segment of toothed clamping ring 3 and bushing 4, 1f. shrinking clamping mouth, 2. sealing ring, 2a. “-”-like sawtooth shape, 3. toothed clamping ring, 3a. ratchet, 4. bushing, and 5. pipe.

DETAILED DESCRIPTIONS OF EMBODIMENTS

[0017] The accompanying drawings of the present invention show some preferred embodiments of the present invention. A press-fitting pipe connector with a toothed ring according to the present invention will be further described below in combination with the accompanying drawings.

[0018] As shown in FIGS. 1-2, the present invention provides a press-fitting pipe connector with a toothed ring, comprising a pipe joint 1, a sealing ring 2, a toothed clamping ring 3, a bushing 4, and a pipe 5. The pipe joint 1 is a “-”-like round pipe with equal wall thickness, an annular groove segment 1a is disposed in a middle portion of the pipe joint 1, a conical pipe 1b, a round pipe segment 1c, a sealing ring protrusion ring segment 1d, a protrusion ring assembly segment 1e of the toothed clamping ring 3 and the bushing 4, and a shrinking clamping mouth if are disposed at both ends of the annular groove segment 1a in sequence, the sealing ring 2, the toothed clamping ring 3 and the bushing 4 are assembled in parallel in inner cavities of the sealing ring protrusion ring segment 1d and the protrusion ring assembly segment 1e of the toothed clamping ring 3 and the bushing 4, a fitting end of the pipe 5 is run through inner diameters of the shrinking clamping mouth 1f, the bushing 4, the toothed clamping ring 3, the sealing ring 2, the round pipe segment 1c and the conical pipe 1b to the annular groove segment 1a, a radial pressure is applied by a press-fitting tool along outer diameters of the round pipe segment 1c, the sealing ring protrusion ring segment 1d and the protrusion ring assembly segment 1e of the toothed clamping ring 3 and the bushing 4, and the round pipe segment 1c, the sealing ring protrusion ring segment 1d and the protrusion ring assembly segment 1e of the toothed clamping ring 3 and the bushing 4 change from a round pipe shape into a neck shape under the action of the pressure.

[0019] As shown in FIG. 3, an outer diameter of the sealing ring 2 is in a half-moon shape, an inner diameter of the sealing ring 2 is in a “-”-like sawtooth shape 2a, the outer diameter of the sealing ring 2 is matched with the inner cavity of the sealing ring protrusion ring segment 1d, and the “-”-like sawtooth shape 2a of the inner diameter of the sealing ring 2 is matched with the pipe 5.

[0020] As shown in FIG. 4, the toothed clamping ring 3 is provided with ratchets 3a which are staggeredly arranged along an inner circle of the toothed clamping ring 3.

[0021] The working principle of the present invention is as follows: an ordinary thick-walled steel pipe is machined into a pipe pre-form which is then extruded into a pipe joint, and a sealing ring, a toothed clamping ring and a bushing are disposed in an inner cavity of the pipe joint. During mounting, a pipe is inserted into inner diameters of the sealing ring, the toothed clamping ring and the bushing assembled in the inner cavity of the pipe joint, a radial pressure is applied using a press-fitting tool along an outer diameter of the pipe joint, and both ends of the pipe joint are squeezed from a pipe shape into a neck shape under the action of the pressure. The sealing ring tightly seals up a gap between an inner diameter of the pipe joint and an outer diameter of the pipe, and ratchets disposed on the toothed clamping ring are closely engaged with the outer diameter of the pipe. Thus, an anti-drawing strength is greatly increased. Therefore, the strength index and the safety requirements of the gas, fire-fighting and heat supply pipes of the high-rise buildings can be satisfied. The pipe joint has a diameter of from DN15 to DN100 and comprises one of straight pipe joint, bend pipe joint, three-way pipe joint, and press-fitting crossover joint.

[0022] The above descriptions of the present invention are merely illustrative rather than limiting. Many modifications, changes, or equivalents made by those skilled in the art without departing from the spirit and scope of the appended claims shall all fall within the scope of protection of the present invention.