Nodular cast iron pipe fitting with reinforced double-socket elbow

Abstract

The utility model discloses a nodular cast iron pipe fitting with reinforced double bell and spigot joints. The nodular cast iron pipe fitting comprises a bent pipe body and bell and spigot joint parts connected to the two ends of the bent pipe body. A reinforcing structure is arranged on the outer arc side of the inner wall of the bent pipe body in an attached mode. The reinforcing structure comprises an arc-shaped inner framework, a ceramic inner layer and a cement mortar thickening layer; the arc-shaped inner framework comprises a pipe wall plate and lattice frames fixed to the inner side wall and the outer side wall of the pipe wall plate. The cement mortar thickening layer and the ceramic inner layer are respectively filled and covered on the lattice frames on the inner side and the outer side of the pipe wall plate; and the ceramic inner layer is bonded and fixed with the inner wall of the elbow body. The outer arc side of the inner wall of the bent pipe is good in anti-scouring performance and abrasion resistance, all layers in the bent pipe are good in connection integrity, and the bent pipe is not prone to falling off after being scoured for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to nodular cast iron pipe fitting technical field especially nodular cast iron pipe fitting with reinforced double socket bend. BACKGROUND

[0002] The nodular cast iron pipe fitting with double socket bend is an important component for connecting and turning of pipeline system, which is provided with socket at both ends, the structure enhances the connecting strength of the pipe fitting, and can realize quick and stable pipeline butt joint.

[0003] When the nodular cast iron pipe fitting with double socket bend is used to transport liquid, if the liquid contains many solid impurities such as sand and stone, the impurities in the liquid will cause great impact and friction on the outer arc side of the inner wall of the pipe fitting, resulting in serious wear of the outer arc side of the inner wall of the pipe fitting with double socket bend, and even leakage and scrap. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the utility model provides a nodular cast iron pipe fitting with reinforced double socket bend, which has good wear resistance on the outer arc side of the inner wall of the elbow pipe, and good connection integrity of each layer in the elbow pipe, and is not easy to fall off after long-term erosion.

[0005] In order to realize the above purpose, the utility model provides a nodular cast iron pipe fitting with reinforced double socket bend, which comprises an elbow pipe body and socket parts connected to both ends of the elbow pipe body; a reinforcing structure is arranged on the outer arc side of the inner wall of the elbow pipe body; the reinforcing structure comprises an arc-shaped inner framework, a ceramic inner layer and a cement mortar thickening layer; the arc-shaped inner framework comprises a pipe wall plate and a lattice frame fixed to the inner and outer two side walls of the pipe wall plate; the cement mortar thickening layer and the ceramic inner layer are respectively filled and covered on the lattice frames on the inner and outer two sides of the pipe wall plate; the ceramic inner layer is adhesively fixed with the inner wall of the elbow pipe body.

[0006] Further, the lattice frame is formed by the interlaced connection of a plurality of arc-shaped transverse pieces and arc-shaped longitudinal pieces, so that a plurality of lattice grooves are formed on the inner and outer sides of the pipe wall plate.

[0007] Further, a connecting pipe is arranged on the pipe wall plate at a position corresponding to each lattice groove, and the two ends of the connecting pipe are penetrated, so that the two opposite lattice grooves on the arc-shaped inner framework are connected.

[0008] Further, the connecting pipe extends towards the ceramic inner layer until abutting against the inner wall of the elbow pipe body.

[0009] Further, the elbow pipe body comprises a nodular cast iron base and a cement mortar lining fixed to the nodular cast iron base, and the cement mortar thickening layer fills the inner hole of the connecting pipe, and further connects with the cement mortar lining.

[0010] The utility model has the advantages of:

[0011] The cement mortar thickened layer can resist the scouring of liquid and reduce the abrasion of the inner wall of the pipe fitting; the ceramic inner layer has higher hardness and wear resistance, and is combined with the cement mortar thickened layer, so that the wear resistance of the outer arc side of the inner wall of the pipe body can be effectively improved; the arc-shaped inner framework of the reinforcing structure not only improves the strength of the reinforcing structure as a whole, but also improves the connecting strength and stability between the cement mortar thickened layer and the ceramic inner layer. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a partial sectional view of the pipe body structure in the utility model.

[0013] Fig. 2 is a structure schematic view of the arc-shaped inner framework in the utility model.

[0014] Fig. 3 is a partial sectional view for reflecting the reinforcing structure in the utility model.

[0015] In the figure: 1, pipe body; 11, ductile iron base body; 12, cement mortar lining; 2, reinforcing structure; 21, arc-shaped inner framework; 211, pipe wall plate; 212, grid frame; 213, grid groove; 22, ceramic inner layer; 23, cement mortar thickened layer; 24, connecting pipe; 3, socket part. DETAILED DESCRIPTION

[0016] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic views, and only schematically show the basic structure of the utility model, so that they only show the components related to the utility model.

[0017] The utility model discloses a ductile iron pipe fitting with reinforced double socket bend.

[0018] Referring to Figs. 1 to 3 A ductile iron pipe fitting with reinforced double socket bend, comprising a pipe body 1 and a socket part 3 connected to both ends of the pipe body 1; the pipe body 1 comprises a ductile body base body and a cement mortar lining 12 fixed to the inner wall of the ductile iron base body 11. The outer arc side of the inner wall of the pipe body 1 is provided with a reinforcing structure 2 in close contact, so as to improve the structural strength and wear resistance of the outer arc side of the inner wall of the pipe body 1.

[0019] Referring to Figs. 1 to 3The reinforcing structure 2 comprises an arc-shaped inner framework 21, a ceramic inner layer 22 and a cement mortar thickened layer 23; the arc-shaped inner framework 21 comprises a pipe wall plate 211 and a lattice frame 212 fixed to the inner and outer two side walls of the pipe wall plate 211. The cement mortar thickened layer 23 and the ceramic inner layer 22 are filled on the lattice frame 212 on the inner and outer two sides of the pipe wall plate 211 respectively; the ceramic inner layer 22 is adhered and fixed to the inner wall of the bend pipe body 1. The curvature of the pipe wall plate 211 of the arc-shaped inner framework 21 is 90-160 degrees.

[0020] The cement mortar thickened layer 23 can resist the erosion of liquid and reduce the abrasion of the inner wall of the pipe; the ceramic inner layer 22 has higher hardness and wear resistance, and in combination with the cement mortar thickened layer 23, the wear resistance of the outer arc side of the inner wall of the pipe body can be effectively improved; the arc-shaped inner framework 21 of the reinforcing structure 2 not only improves the overall strength of the reinforcing structure 2, but also improves the connecting strength and stability between the cement mortar thickened layer 23 and the ceramic inner layer 22.

[0021] With reference to Figs. 1 to 3 The lattice frame 212 is formed by the interlaced connection of a plurality of arc-shaped transverse pieces and arc-shaped longitudinal pieces, so that a plurality of lattice grooves 213 are formed on the inner and outer side walls of the pipe wall plate 211, thereby improving the connecting strength and stability between the ceramic inner layer 22, the cement mortar thickened layer 23 and the arc-shaped inner framework 21, and the lattice frame 212 is not easy to fall off under long-term erosion and scouring of liquid.

[0022] A connecting pipe 24 is arranged on the pipe wall plate 211 at a position corresponding to each lattice groove 213, and the two ends of the connecting pipe 24 are penetrated, so that the opposite two lattice grooves 213 of the arc-shaped inner framework 21 are connected. The design of the connecting pipe 24 further improves the connecting strength between the components of the reinforcing structure 2, so that the integrity of the reinforcing structure 2 is better.

[0023] The connecting pipe 24 extends towards the ceramic inner layer 22 until abutting against the inner wall of the bend pipe body 1; the cement mortar thickened layer 23 fills the inner hole of the connecting pipe 24, and then connects with the cement mortar inner layer 12. Then, the cement mortar thickened layer 23 and the cement mortar inner layer are connected as a whole, thereby improving the connecting stability between the pipe body and the reinforcing structure 2, so that the integrity of the pipe is better, and the pipe can better bear the scouring force.

[0024] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A ductile cast iron pipe fitting having a reinforced double socket bend, comprising a bend body (1) and socket portions (3) connected to both ends of the bend body (1); characterized in that: The outer arc side of the inner wall of the elbow pipe body (1) is attached with a reinforcing structure (2); the reinforcing structure (2) comprises an arc-shaped inner framework (21), a ceramic inner layer (22) and a cement mortar thickened layer (23); the arc-shaped inner framework (21) comprises a pipe wall plate (211) and a lattice frame (212) fixed to the inner and outer two side walls of the pipe wall plate (211); the cement mortar thickened layer (23) and the ceramic inner layer (22) are respectively filled and covered on the lattice frame (212) on the inner and outer two sides of the pipe wall plate (211); the ceramic inner layer (22) is adhesively fixed with the inner wall of the elbow pipe body (1).

2. A ductile iron pipe fitting having a reinforced double-socket bend as defined in claim 1, wherein: The lattice frame (212) is formed by interlaced connection of a plurality of arc-shaped transverse pieces and arc-shaped longitudinal pieces, so that the inner and outer sides of the pipe wall plate (211) are formed with a plurality of lattice grooves (213).

3. A ductile iron pipe fitting having a reinforced double-socket bend as defined in claim 2, wherein: A connecting pipe (24) is arranged on the pipe wall plate (211) at a position corresponding to each lattice groove (213), both ends of the connecting pipe (24) are penetrated, so that the opposite two lattice grooves (213) on the arc-shaped inner framework (21) are connected in communication.

4. A ductile iron pipe fitting having a reinforced double-socket bend as defined in claim 3, wherein: The connecting pipe (24) extends towards the ceramic inner layer (22) until abutting against the inner wall of the elbow pipe body (1).

5. A ductile iron pipe fitting having a reinforced double-socket bend as defined in claim 4, wherein: The elbow pipe body (1) comprises a nodular cast iron base body (11) and a cement mortar inner lining (12) fixed to the nodular cast iron base body (11), the cement mortar thickened layer (23) fills the inner hole of the connecting pipe (24), and further connects with the cement mortar inner lining (12).

Images