CN110671545A

CN110671545A - Concrete pipe and manufacturing process thereof

Info

Publication number: CN110671545A
Application number: CN201910935888.0A
Authority: CN
Inventors: 曹爱清; 王亚东; 贾新阳; 康磊
Original assignee: Beijing Miyun Cement Products Co Ltd
Current assignee: Beijing Miyun Cement Products Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-01-10

Abstract

The invention discloses a concrete pipe and a manufacturing process thereof, and the technical scheme is as follows: the water pipe comprises a pipe body, wherein a female end and a male end are arranged on the pipe body, the pipe body is composed of a steel bar keel and a concrete layer coated with the steel bar keel, and a water blocking pipe is fixedly connected to the outer peripheral surface of the male end of the pipe body. The invention has the advantages that: the waterproof performance of the concrete pipe socket is improved.

Description

Concrete pipe and manufacturing process thereof

Technical Field

The invention relates to the field of underground drainage pipes, in particular to a concrete pipe and a manufacturing process thereof.

Background

The concrete pipe is also called cement pressure pipe and reinforced concrete pipe, and can be used as sewer pipe in urban construction and building foundation and water supply pipe used in some special factories and mines. Cement pipelines can be generally classified into: plain end cement pipe, flexible mouthful cement pipe, bell and spigot cement pipe etc..

Current concrete pipe includes bellmouth and socket, and the cover is equipped with the sealing washer on the socket to set up the holding tank that holds the sealing washer on the outer wall of socket. In order to realize the mutual insertion between the bell mouth and the spigot between the concrete pipes, the wall thickness of the spigot of the concrete pipe is thinner, so that the spigot of the concrete pipe is easy to crack in collision in the long-distance transportation of the concrete pipe, thereby causing the quality problem of the concrete pipe and failing to meet the use requirements.

Disclosure of Invention

The invention aims to provide a concrete pipe and a manufacturing process thereof, and the concrete pipe has the advantage of improving the waterproof performance of a concrete pipe socket.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a concrete pipe, includes the body, is provided with female end and spigot end on the body, and the body comprises steel joist to and the concrete layer with steel joist cladding, the outer peripheral face rigid coupling of the spigot end of body has the water blocking pipe.

Through above-mentioned technical scheme, the pipe that blocks water sets up in the outside of spigot end to the body has played the effect of protection. The spigot end of the original pipe body is formed by pouring concrete, and air bubbles or cracks are easily generated in the concrete in the pouring process, so that water leakage is caused by the quality of the spigot end of the pipe body in the process of mutually inserting two adjacent pipe bodies; therefore, even if the poured concrete cracks, the overflowing water is covered by the water blocking pipe and cannot easily penetrate through the outer surface of the pipe body. The integral waterproof performance of the pipe body is improved.

The invention is further configured to: the inner peripheral surface of the water blocking pipe is fixedly connected with a plurality of fixing components for preliminary positioning with the steel bar keel;

the fixing component comprises a fixing rod, and a clamping arm fixedly connected to one end of the fixing rod and used for erecting a steel keel; the other end of the fixed rod is fixedly connected with the inner circumferential surface of the water blocking pipe.

Through the technical scheme, the pipe body is formed in a pouring mode, so that the water blocking pipe needs to be positioned before the pipe body is poured. The setting of dead lever, to the effect of having played the erectting of hindering the water pipe, be convenient for hinder water pipe and steel reinforcement fossil fragments interconnect, the setting of arm lock has played the effect of establishing to steel reinforcement fossil fragments, has improved the stability that the pipe that blocks water and steel reinforcement fossil fragments erect. So that the water blocking pipe is positioned at the outer wall of the pipe body after the external mold coats the steel bar keel.

The invention is further configured to: the clamping arm comprises a fixed plate and two clamping plates fixedly connected to the same side of the fixed plate; one end of the fixing rod is fixed on one side of the fixing plate, which is far away from the clamping plate.

Through above-mentioned technical scheme, the setting of two splint has played the effect of pressing from both sides and establishing to the steel reinforcement fossil fragments, works as the external mold in addition with the steel reinforcement fossil fragments cladding back, also is convenient for adjust the coaxial position relation of steel reinforcement fossil fragments and water-blocking board through the mutual sliding of splint and steel reinforcement fossil fragments.

The invention is further configured to: the water blocking pipe is a pipe fitting formed by injection molding of PMMA materials.

Through the technical scheme, the PMMA material has high transparency, high strength, better tensile and impact resistance capability and low price. Therefore, the water blocking pipe is made of PMMA materials, the manufacturing cost of each pipe body cannot be additionally and greatly increased, and the water blocking pipe is not easy to age after being exposed for a long time even if the pipe body is placed in a field after anti-aging agents are added into the water blocking pipe.

The invention is further configured to: hinder the outer peripheral face cover of water pipe and be equipped with the sealing washer, hinder to be provided with on the water pipe and mould plastics and form the holding tank that is used for holding the sealing washer.

Through above-mentioned technical scheme, because the injection moulding of the pipe that blocks water makes, reduced the follow-up cost to the pipe processing that blocks water, not only improved the manufacturing efficiency of the pipe that blocks water, reduced the loaded down with trivial details of the follow-up processing of the pipe that blocks water moreover.

The invention is further configured to: the inner peripheral surface of the water blocking pipe is fixedly connected with a plurality of reinforcing plates for reinforcing the strength of the water blocking plate, and the reinforcing plates are uniformly distributed along the length of the water blocking plate.

Through above-mentioned technical scheme, setting up of reinforcing plate has increased the intensity of the pipe that blocks water, has improved the area of contact of the pipe that blocks water with the concrete moreover, has improved the fastness that blocks water pipe and concrete are fixed.

The invention is further configured to: the reinforcing plate is a step-shaped bending plate.

Through the technical scheme, after concrete is solidified, the bending plate is arranged to be in the step shape, so that the concrete plays a limiting role in bending the reinforcing plate, and the stability of connection of the water blocking pipe and the pipe body is improved.

In view of the defects in the prior art, a second object of the present invention is to provide a manufacturing process of a concrete pipe, which enables the waterproof performance at the socket of the pipe body to be more excellent.

In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following steps:

s1: preparing a mould, cleaning rust stains and cement residues on a bottom support, uniformly coating a separant on a base, placing a steel bar keel on the bottom support, cleaning cement paste on an outer mould, and spraying water to wet the inner wall of the outer mould;

s2: positioning the pipe fitting, namely placing the water blocking pipe at the upper end of the steel bar keel, clamping the clamping arm on the corresponding steel bar keel, and coaxially placing the water blocking pipe and the steel bar keel;

s3: assembling a die, namely coating an outer die on the outer peripheral surface of the steel bar keel by a worker, fixing the outer die above a bottom support, and moving the outer die to a radial extrusion pipe making machine by the worker;

s4: extruding and forming, namely adjusting parameters of a radial extrusion pipe making machine to enable the torque required by the pipe made by the radial extrusion pipe making machine to be matched, then enabling a main shaft of the radial extrusion pipe making machine to enter the outer mold from the upper port of the outer mold and rotate in the outer mold, pouring materials into the upper port of the outer mold, driving the main shaft of the radial extrusion pipe making machine to move up and down in the outer mold, carrying out extrusion forming on concrete, and enabling the concrete to coat the steel bar keel to form a pipe body shape;

s5: demoulding the pipe, namely after a main shaft of the radial extrusion pipe making machine retreats from the outer die, a worker moves the outer die out of a working area of the radial extrusion pipe making machine, and then detaches the outer die from the bottom support to enable the unset concrete to be vertically arranged on the bottom support;

s6: air hole treatment, wherein workers use a brush to brush the outer wall of the outer pipe lightly so that the unset concrete is distributed more uniformly, and the air holes communicated in the pipe body are plugged through the fine concrete;

s7: maintaining the pipe, namely sleeving a plastic bag on the peripheral surface of the pipe body, and performing moisture preservation treatment on the pipe body;

s8: exit tube and pile up put, after tubular product reached exit tube intensity, the staff hung the body, used the sledge to strike gently with the sledge, made it break away from with the socket, upset tubular product put things in good order the district slowly to horizontal position.

Through above-mentioned technical scheme, a manufacturing process of body is provided for the body prepares through the mould, and the pipe fitting location, the mould equipment, extrusion, the tubular product drawing of patterns, the tubular product maintenance, exit tube and pile up, wait multiple process preparation to become the concrete pipe that can supply to use, from this also to the gas pocket in the concrete, made a little solution, thereby improved the preparation success rate of body, and still owing to the setting of water blocking pipe, improved the intensity and the water blocking performance of body spigot end.

The invention is further configured to: between S7 and S8, the moisture retention time is determined according to the outdoor temperature, and the temperature of 0-10 ℃ is more than or equal to 24 hours; the temperature is more than or equal to 18 hours at 10 ℃ to-20 ℃; is more than or equal to 14 hours at the temperature of 24 ℃.

Through the technical scheme, the maintenance time of the tube body is determined through the ambient temperature, so that the maintenance efficiency of the tube body is improved, and the success rate of tube body preparation is improved.

The invention is further configured to: and S8, placing and maintaining the pipe body, uniformly coating cement mortar and construction glue on the inner wall and the outer wall of the pipe body, and plugging air holes in the inner wall and the outer wall of the pipe body.

Through the technical scheme, the gaps of the pipe body are filled by the effect of the cement mortar and the construction glue on the coating between the inner wall and the outer wall of the pipe body, and the waterproof performance of the pipe body is improved.

In conclusion, the invention has the following beneficial effects:

firstly, the waterproof performance of the socket end of the pipe body is improved. The water blocking pipe is arranged, so that even though the poured concrete cracks, overflowing water is covered on the water blocking pipe and cannot easily penetrate through the outer surface of the pipe body. The integral waterproof performance of the pipe body is improved;

and secondly, the connection stability of the water blocking pipe and the concrete layer is improved. After the concrete solidifies, because the board of bending sets up to the stairstepping to make the concrete to bend and played limiting displacement to the reinforcing plate, improved the stability of the pipe and the body coupling that blocks water.

Drawings

FIG. 1 is a schematic view of the overall structure of a pipe body;

FIG. 2 is a schematic view showing the internal structure of the tube;

FIG. 3 is a schematic view showing the fixed relationship between the water blocking pipes and the steel keels;

FIG. 4 is a schematic view showing the structure of the fixing member;

fig. 5 is a flow chart of a concrete pipe manufacturing process.

In the figure, 1, a tube body; 11. a female end; 12. a socket end; 13. a concrete layer; 2. a steel bar keel; 3. a water blocking pipe; 31. accommodating grooves; 4. a seal ring; 5. a fixing assembly; 51. fixing the rod; 52. clamping arms; 521. a fixing plate; 522. a splint; 6. a reinforcing plate.

Detailed Description

A concrete pipe is shown in the figure and comprises a pipe body 1, wherein a female end 11 and a female end 12 are arranged on the pipe body 1.

As shown in the figure, the diameter of the outer wall of the female end 11 of the pipe body 1 is larger than that of the outer wall of the female end 12 of the pipe body 1; the diameter of the inner wall of the female end 11 of the pipe body 1 is smaller than that of the outer wall of the female end 12 of the pipe body 1, so that the adjacent two pipe bodies 1 can be conveniently inserted and fixed. The pipe body 1 is formed by pouring concrete and is named as a concrete layer 13; the concrete layer 13 is internally provided with a steel keel 2, thereby increasing the overall strength of the pipe body 1.

As shown in the figure, because the pipe body 1 is formed by pouring concrete, air bubbles are easily generated in the concrete layer 13 in the pouring process; after the concrete layer 13 is solidified, a cavity is easily formed in the concrete layer 13, and the pipe wall of the spigot end 12 of the pipe body 1 is relatively thin, so that the concrete layer 13 is easy to crack, and the waterproof performance of the pipe body 1 is affected. Therefore, the water blocking pipe 3 made of PMMA is arranged at the socket end 12 of the pipe body 1, the water blocking pipe 3 and the pipe body 1 are coaxially arranged, and the water blocking pipe 3 is positioned on the outer wall of the pipe body 1. The setting that hinders water pipe 3 has played the guard action to the concrete layer 13 of spigot end 12 department, even the inside fracture that appears of concrete layer 13, the inside moisture of body 1 can not pass and hinder water pipe 3 yet, and then has improved the waterproof performance of concrete pipe.

The outer peripheral surface of spigot end 12 of body 1 still is provided with the sealing washer 4 of rubber material, and in order to make the firm fixing of sealed pad on the outer peripheral surface of water blocking pipe 3, injection moulding has the holding tank 31 that is used for inlaying the sealed pad on the water blocking pipe 3. Because the water blocking pipe 3 is formed by injection molding of a PMMA material, the PMMA material has high transparency, high strength and better tensile resistance and impact resistance, the water blocking pipe 3 is additionally arranged at the socket end 12 of the pipe body 1, and the integral strength of the socket end 12 of the pipe body 1 is improved; before the pipe body 1 is not used, the pipe body 1 needs to be placed in a field for a long time, so that the pipe body 1 can be exposed to a high-temperature environment for a long time in summer, and if the anti-aging agent is added into the PMMA, the water blocking pipe 3 is not easy to age even if the water blocking pipe 3 is in the high-temperature environment for a long time; and the PMMA material is cheap, and the production cost of the pipe body 1 cannot be greatly increased.

Because the concrete pipe is by concrete placement shaping, for the stable setting of the pipe that blocks water 3 is on the outer peripheral face of body 1 socket department, be provided with the fixed subassembly 5 that a plurality of and steel joist 2 erect each other on the inner wall of pipe that blocks water 3 (fixed subassembly 5 is provided with 3 in this embodiment). The fixing component 5 comprises a fixing rod 51, one end of the fixing rod 51 is fixedly connected to the inner wall of the water blocking pipe 3, the other end of the fixing rod 51 is arranged towards the direction of the circle center of the water blocking pipe 3, and the fixing rod 51 is fixedly connected with a clamping arm 52 which is used for being mutually erected with the steel keel 2 towards the end of the water blocking pipe 3 in the center direction. The clamping arm 52 comprises a fixing plate 521, and two clamping plates 522 fixed on the same side of the fixing plate 521, wherein the two clamping plates 522 are parallel to each other and are arranged perpendicular to the fixing plate 521, and one side of the fixing plate 521, which is far away from the clamping plates 522, is fixed to the end of the fixing rod 51. When the pipe 3 that blocks water and steel joist 2 are fixed each other, need to place the pipe 3 that blocks water at appointed height, then pass the steel joist 2 that will correspond in the space between two splint 522, through three arm lock 52 and steel joist 2's overlap joint each other to make 3 the outside of erectting at steel joist 2 of blocking water pipe. When the staff adds the mould with steel reinforcement fossil fragments 2, the pipe 3 that blocks water can paste and lean on the inner wall of mould to make splint 522 and steel reinforcement fossil fragments 2 slide each other, thereby the adjustment blocks the position of erectting of pipe 3 and steel reinforcement fossil fragments 2, and makes steel reinforcement fossil fragments 2 and the pipe 3 that blocks water be located coaxial state, the subsequent concrete placement's of being convenient for work.

As shown in the figure, the inner wall of the water blocking pipe 3 is provided with a plurality of reinforcing plates 6, the reinforcing plates 6 are uniformly distributed on the inner circumferential surface of the water blocking pipe 3 along the axial direction of the water blocking pipe 3, and one side of each reinforcing plate 6 is fixed on the inner wall of the water blocking pipe 3. The setting of reinforcing plate 6 has not only increased the intensity of the pipe 3 self that blocks water, and the setting of reinforcing plate 6 has still increased the area of contact with concrete layer 13 moreover, has improved the stability of the pipe 3 that blocks water and concrete layer 13 interconnect. And the reinforcing plate 6 is provided with a step-shaped bending plate, so that the gap of the bending area of the reinforcing plate 6 can be filled after concrete pouring is finished. After concrete layer 13 solidifies, concrete layer 13 can play the limiting displacement to the department of buckling of reinforcing plate 6, has improved the steadiness that the pipe 3 that blocks water is connected with concrete layer 13. Above-mentioned fixed subassembly 5, reinforcing plate 6 and the pipe 3 that blocks water are the integrated into one piece of pouring to the preparation efficiency of the pipe 3 that blocks water has been improved.

A process for manufacturing a concrete pipe comprising the steps of, as shown in fig. 5:

s1: preparing a mould, cleaning rust and cement residues on a bottom support, uniformly coating a separant on a base, placing the steel bar keel 2 on the bottom support, cleaning cement paste on an outer mould, and spraying water to wet the inner wall of the outer mould.

S2: and (3) positioning the pipe fitting, namely placing the water blocking pipe 3 at the upper end of the steel bar keel 2, clamping the clamping arms 52 on the corresponding steel bar keel 2, and erecting the water blocking pipe 3 at the corresponding height of the steel bar keel 2.

S3: and (3) assembling the die, namely coating the outer die on the outer peripheral surface of the steel bar keel 2 by a worker, fixing the outer die above the bottom support, and moving the outer die to a radial extrusion pipe making machine by the worker.

S4: and (3) performing extrusion forming, adjusting parameters of a radial extrusion pipe making machine, matching torques required by pipes made of the pipes, then enabling a main shaft of the radial extrusion pipe making machine to enter the outer mold from an upper port of the outer mold, rotating in the outer mold, pouring materials to the upper port of the outer mold, driving the main shaft of the radial extrusion pipe making machine to move up and down in the outer mold, performing extrusion forming on concrete, and enabling the concrete to coat the steel bar keel 2 to form the shape of the pipe body 1.

S5: and (3) demolding the pipe, wherein after the main shaft of the radial extrusion pipe making machine retreats from the outer mold, a worker moves the outer mold out of the working area of the radial extrusion pipe making machine, and then detaches the outer mold from the bottom support so that the unset concrete is vertically arranged on the bottom support.

S6: the gas pocket is handled, and the staff uses the gentle brush of brush to rub outer tube outer wall, makes unset concrete distribution more even to carry out the shutoff through the gas pocket of finely divided concrete with intercommunication in the body 1.

S7: maintaining the tube, namely sleeving a plastic bag on the peripheral surface of the tube body 1, and performing moisture preservation treatment on the tube body 1; determining the moisture retention time according to the outdoor temperature, wherein the moisture retention time is more than or equal to 24 hours at 0-10 ℃; the temperature is more than or equal to 18 hours at 10 ℃ to-20 ℃; is more than or equal to 14 hours at the temperature of 24 ℃.

S8: exit tube and pile up put, after tubular product reached exit tube intensity, the staff hung up body 1, used the sledge to strike gently with the sledge, made it break away from with the socket, upset tubular product put things in good order the district slowly to horizontal position.

S9: and (3) waterproof treatment: cement mortar and construction glue are uniformly coated on the inner wall and the outer wall of the pipe body 1 to plug the air holes on the inner wall and the outer wall of the pipe body 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a concrete pipe, includes body (1), is provided with socket end (11) and spigot end (12) on body (1), and body (1) comprises steel bar keel (2) to and constitute steel bar keel (2) coated concrete layer (13), characterized by: the outer peripheral surface of the socket end (12) of the pipe body (1) is fixedly connected with a water blocking pipe (3).

2. A concrete pipe according to claim 1 wherein: the inner peripheral surface of the water blocking pipe (3) is fixedly connected with a plurality of fixing components (5) for preliminary positioning with the steel bar keel (2);

the fixing component (5) comprises a fixing rod (51) and a clamping arm (52) which is fixedly connected to one end of the fixing rod (51) and used for erecting the steel keel (2); the other end of the fixed rod (51) is fixedly connected with the inner circumferential surface of the water blocking pipe (3).

3. A concrete pipe according to claim 2 wherein: the clamping arm (52) comprises a fixing plate (521) and two clamping plates (522) fixedly connected to the same side of the fixing plate (521); one end of the fixing rod (51) is fixed on one side of the fixing plate (521) departing from the clamping plate (522).

4. A concrete pipe according to claim 1 wherein: the water blocking pipe (3) is a pipe fitting formed by injection molding of PMMA materials.

5. A concrete pipe according to claim 4 wherein: the outer peripheral face of hindering water pipe (3) is equipped with sealing washer (4), hinder to be provided with on water pipe (3) and mould plastics and form holding tank (31) that are used for holding sealing washer (4).

6. A concrete pipe according to claim 1 wherein: the inner peripheral surface of the water blocking pipe (3) is fixedly connected with a plurality of reinforcing plates (6) for reinforcing the strength of the water blocking plate, and the reinforcing plates (6) are uniformly distributed along the length of the water blocking plate.

7. A concrete pipe according to claim 6 wherein: the reinforcing plate (6) is a step-shaped bending plate.

8. A process for the production of a concrete pipe using the concrete pipe according to any one of claims 1 to 7, characterized by: the method comprises the following steps:

s1: preparing a mould, cleaning rust and cement residues on a bottom support, uniformly coating a separant on a base, placing a steel bar keel (2) on the bottom support, cleaning cement paste on an outer mould, and spraying water to wet the inner wall of the outer mould;

s2: positioning the pipe fitting, namely placing the water blocking pipe (3) at the upper end of the steel bar keel (2), clamping the clamping arm (52) on the corresponding steel bar keel (2), and coaxially placing the water blocking pipe (3) and the steel bar keel (2);

s3: assembling a die, namely coating an outer die on the outer peripheral surface of the steel bar keel (2) by a worker, fixing the outer die above a bottom support, and moving the outer die to a radial extrusion pipe making machine by the worker;

s4: extruding and forming, wherein parameters of a radial extrusion pipe making machine are adjusted, so that the required torques of the pipes are matched, then a main shaft of the radial extrusion pipe making machine enters an outer die from an upper port of the outer die and rotates in the outer die, then the materials are poured into the upper port of the outer die, the main shaft of the radial extrusion pipe making machine is driven to move up and down in the outer die, and the concrete is extruded and formed, so that the concrete coats a steel bar keel (2) to form the shape of a pipe body (1);

s6: air hole treatment, wherein workers use a brush to brush the outer wall of the outer pipe lightly so that the unset concrete is distributed more uniformly, and the air holes communicated in the pipe body (1) are plugged through the fine concrete;

s7: maintaining the pipe, namely sleeving a plastic bag on the peripheral surface of the pipe body (1) and carrying out moisture preservation treatment on the pipe body (1);

s8: exit tube and pile up put, after tubular product reached exit tube intensity, the staff hung up body (1), used the sledge to strike gently with the sledge, made it break away from with the socket, upset tubular product put things in good order the district slowly to horizontal position.

9. A process for the manufacture of a concrete pipe according to claim 8, characterized in that: between S7 and S8, the moisture retention time is determined according to the outdoor temperature, and the temperature of 0-10 ℃ is more than or equal to 24 hours; the temperature is more than or equal to 18 hours at 10 ℃ to-20 ℃; is more than or equal to 14 hours at the temperature of 24 ℃.

10. A process for the manufacture of a concrete pipe according to claim 8, characterized in that: and S8, placing and maintaining the pipe body (1), uniformly coating cement mortar and construction glue on the inner wall and the outer wall of the pipe body (1), and plugging air holes in the inner wall and the outer wall of the pipe body (1).