CN213839996U

CN213839996U - Reducing elbow

Info

Publication number: CN213839996U
Application number: CN202022935147.3U
Authority: CN
Inventors: 周森洪; 唐军; 张晰谋
Original assignee: Shanghai Yuanzhou Pipe Technology Co ltd
Current assignee: Shanghai Yuanzhou Pipe Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-07-30
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a reducing elbow, which adopts the pipe diameters of a main pipe hole and an auxiliary pipe hole which are different; a bent transition hole is arranged between the two axes of the main pipe hole and the auxiliary pipe hole, and the included angle between the transition hole and the two axes is 90-135 degrees; forming a reducing elbow formed by one-time compression molding; the utility model discloses can directly match with the shower head quantity that the pipeline of different pipe diameters was taken, need not increase during the reducing and mend the core, but lug connection shower head on the accessory tube hole, and satisfy different positions to the requirement of bend angle, the utility model has the advantages of economize the material, economize the space, high temperature resistant, anticorrosive, easily install and reduce material cost and alleviate intensity of labour.

Description

Reducing elbow

Technical Field

The utility model belongs to the technical field of the fire control water supply technique and specifically relates to a reducing elbow for fire control supply channel.

Background

The pipelines and joints of the fire-fighting automatic water-spraying fire-extinguishing system in the prior art are made of galvanized steel pipes, and the galvanized steel pipes are extremely easy to corrode, so that a plurality of fire-fighting pipelines are seriously corroded, and a spray head is blocked by iron rust when a fire disaster happens, so that water cannot be sprayed to fight the fire in time, the fire-fighting time is delayed, and a larger fire disaster is caused; secondly, galvanized steel pipes are inconvenient to install and maintain, the connection between the steel pipes needs threading connection, a large amount of labor cost is increased, the construction efficiency is not high, the sealing difficulty is high, and potential safety hazards exist; and in the design standard of automatic sprinkler system, the shower head quantity that the pipeline of different pipe diameters was taken differs, the connection that leads to the pipeline needs to have a plurality of reducing of preparation, and crooked angle is different, because the restriction that receives galvanized steel pipe production technology, two nozzles of current elbow are mostly the constant diameter tube hole, need add the benefit core during the reducing, it not only increases a part to increase the benefit core, and sealed the length that has still increased the joint many times, it needs the mantle fiber to connect to mend the core, the mantle fiber makes the pipe wall attenuation, not only the cost is increased and there is the easy potential safety hazard of corroding the leakage of joint.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reducing elbow aiming at the defects of the prior art, which adopts the pipe diameters of a main pipe hole and an auxiliary pipe hole to be unequal; a bent transition hole is arranged between two axes of the main pipe hole and the auxiliary pipe hole, and the included angle between the transition hole and the two axes is 90-135 degrees; forming a reducing elbow formed by one-time compression molding; the utility model discloses can directly match with the shower head quantity that the pipeline of different pipe diameters was taken, need not increase during the reducing and mend the core, but lug connection shower head on the accessory tube hole, and satisfy different positions to the requirement of bend angle, the utility model has the advantages of economize the material, economize the space, high temperature resistant, anticorrosive, easily install and reduce material cost and alleviate intensity of labour.

Realize the utility model discloses the concrete technical scheme of purpose is:

a reducing elbow is characterized by comprising a main pipe hole and an auxiliary pipe hole which are mutually communicated and are not on the same axis, wherein a bent transition hole is arranged between the two axes of the main pipe hole and the auxiliary pipe hole, and an included angle between the transition hole and the two axes is 90-135 degrees; the pipe diameters of the main pipe hole and the auxiliary pipe hole are different;

the main pipe hole and the auxiliary pipe hole are all unthreaded holes with cone angles alpha of 0.2-0.5 degrees, and the unthreaded holes are in a horn mouth shape;

the main pipe hole is provided with a main pipe stopping step at the joint with the transition hole, and the auxiliary pipe hole is provided with an auxiliary pipe stopping step at the joint with the transition hole.

The main pipe retaining step is composed of an annular ring with a rectangular cross section.

The auxiliary pipe retaining step is composed of an annular ring with a rectangular cross section.

The elbow is formed by one-time injection molding of a mold.

Drawings

Fig. 1 is a schematic structural view of a 90-degree elbow of the present invention;

fig. 2 is a schematic structural view of the 135-degree elbow of the present invention.

Detailed Description

Referring to fig. 1 and 2, the elbow of the present invention is composed of a main pipe hole 11 and an auxiliary pipe hole 12 which are mutually communicated and are not in the same axis, a curved transition hole is arranged between two axes of the main pipe hole 11 and the auxiliary pipe hole 12, and an included angle between the transition hole and the two axes is 90-135 degrees; the pipe diameters of the main pipe hole 11 and the auxiliary pipe hole 12 are different;

the main pipe hole 11 and the auxiliary pipe hole 12 are light holes with cone angles alpha of 0.2-0.5 degrees, and the light holes are in a bell mouth shape;

a main pipe retaining step 111 is arranged at the joint of the main pipe hole 11 and the transition hole, and an auxiliary pipe retaining step 122 is arranged at the joint of the auxiliary pipe hole 12 and the transition hole.

Referring to fig. 1, the main pipe retaining step 111 is formed of an annular ring having a rectangular cross-section.

Referring to fig. 1, the auxiliary tube stopping step 122 is formed of an annular ring having a rectangular cross section.

The elbow is formed by one-time injection molding of a mold.

The utility model discloses a use like this:

referring to fig. 1 and 2, the utility model is suitable for a reducing elbow joint of fire-fighting water supply system satisfies the requirements in the automatic water-spraying fire-extinguishing system construction and acceptance standard (GB 50084-2017) (GB/T5135.19-2010).

The utility model discloses a be responsible for the hole 11 at the elbow both ends and attach the pipe hole 12 and design for the unequal pipe diameter of internal diameter, can directly match with the shower head quantity that the pipeline of different pipe diameters was taken, and the contained angle between transition hole and the diaxon is designed for 90 °, 105 °, 120 or 135, satisfies the requirement of different positions to elbow bend angle.

Referring to fig. 1, the utility model discloses the connection with other tubular products adopts plug-in type cold melt glue to be connected, need not the mantle fiber during the connection, has avoided because the mantle fiber leads to the risk of pipe wall attenuation, intensity reduction.

Referring to fig. 1, in order to facilitate connection with other pipes, the main pipe hole 11 and the auxiliary pipe hole 12 of the present invention are both unthreaded holes with a taper angle α of 0.5 °, and the unthreaded holes are in a bell mouth shape, so as to facilitate insertion with other pipes.

Referring to fig. 1, appear the phenomenon of grafting over the head and prevent that the glue from leaking to the transition hole of elbow when preventing to be connected with other tubular products in, the utility model discloses be equipped with in the junction of being responsible for hole 11 and transition hole and be responsible for stopping step 111, be equipped with in the junction of attaching pipe hole 12 and transition hole and attach pipe stopping step 122.

Claims

1. A reducing elbow is characterized by comprising a main pipe hole (11) and an auxiliary pipe hole (12) which are mutually communicated and are not on the same axis, wherein a bent transition hole is arranged between two axes of the main pipe hole (11) and the auxiliary pipe hole (12), and an included angle between the transition hole and the two axes is 90-135 degrees;

the pipe diameters of the main pipe hole (11) and the auxiliary pipe hole (12) are different;

the main pipe hole (11) and the auxiliary pipe hole (12) are unthreaded holes with cone angles alpha of 0.2-0.5 degrees, and the unthreaded holes are in a bell mouth shape;

the main pipe stopping step (111) is arranged at the joint of the main pipe hole (11) and the transition hole, and the auxiliary pipe stopping step (122) is arranged at the joint of the auxiliary pipe hole (12) and the transition hole.

2. The reducer elbow according to claim 1, wherein the main pipe retaining step (111) is formed by an annular ring having a rectangular cross-section.

3. The reducer elbow according to claim 1, wherein the auxiliary pipe stopping step (122) is formed by an annular ring with a rectangular cross section.

4. The reducer elbow according to claim 1, wherein the elbow is injection molded in one piece with a mold.