1. The utility model provides a reinforced concrete drain pipe, including the concrete body, the concrete body is embedded to have the reinforcing bar frame, its characterized in that: the concrete pipe body one end is equipped with the mouth of pipe, and the other end is equipped with the mouth of pipe, it has the inserting groove to take shape on the mouth of pipe inside wall, the outer diameter of the mouth of pipe outer end of inserting matches with the mouth of pipe outer end internal diameter, the mouth of pipe of inserting and the mouth of pipe inner all form the ring channel that can insert the reinforcing bar frame.

2. The reinforced concrete drain pipe of claim 1, wherein: the reinforcing steel bar frame comprises a plurality of linear reinforcing steel bars extending along the length direction of the concrete pipe body, the plurality of linear reinforcing steel bars are arranged along the axial lead circumference of the concrete pipe body in an array mode, and spiral reinforcing steel bars extending along the length direction of the concrete pipe body are fixedly welded on the peripheries of the plurality of linear reinforcing steel bars.

3. The reinforced concrete drain pipe of claim 1, wherein: the outer side wall of the annular groove extends along the length direction of the concrete pipe body, and the extending section is 1.5-3 times of the length of the inner side wall of the annular groove.

4. The reinforced concrete drain pipe of claim 1, wherein: and annular limiting step surfaces which are attached to the end surfaces of the concrete pipe body are formed on the outer side wall and the inner side wall of the pipe inserting port and the pipe connecting port.

5. The reinforced concrete drain pipe of claim 1, wherein: and a limiting convex ring which can be attached to the outer end face of the connecting pipe opening is formed on the outer side wall of the inserting pipe opening.

6. The production method of the reinforced concrete drain pipe is characterized by comprising the following steps of:

1) blending and stirring the concrete raw materials uniformly to prepare concrete mortar;

2) preparing a reinforcing steel bar frame through a seam welder;

3) casting and prefabricating to obtain a socket opening and a connecting pipe opening;

4) respectively inserting two ends of the reinforcing steel frame prepared in the step 2) into the annular grooves of the pipe inserting opening and the pipe connecting opening prepared in the step 3), placing the two ends into a concrete pipe mould, installing the concrete pipe mould to a centrifugal machine by a gantry crane after mould closing, starting the centrifugal machine, injecting the concrete mortar prepared in the step 1) into the concrete pipe mould during high-speed rotation, attaching the concrete mortar to the inner wall of the concrete pipe mould under the action of centrifugal force, wrapping the reinforcing steel frame, and filling and connecting the pipe connecting opening and the pipe connecting opening;

5) steaming the reinforced concrete drain pipe primary blank prepared in the step 4);

6) and after the steam curing of the initial blank of the reinforced concrete drain pipe is finished, removing the die from the mold.

7. The method for producing a reinforced concrete drain pipe according to claim 6, wherein: the concrete raw material in the step 1) comprises 200-300 parts of Portland cement, 180-250 parts of river sand, 40-50 parts of graded broken stone, 160-180 parts of water, 9-13 parts of a water reducing agent, 5-9 parts of a retarder and 5-7 parts of a rust inhibitor.

8. The method for producing a reinforced concrete drain pipe according to claim 6, wherein: and 5) carrying out steam curing on the reinforced concrete drain pipe primary blank by using the autoclave, forming negative pressure in the autoclave by using a vacuum pump, keeping the temperature in the autoclave at 105-120 ℃, pumping water vapor evaporated from the reinforced concrete drain pipe primary blank in the autoclave by using the vacuum pump after 40-50 minutes, and cooling the autoclave to normal temperature to finish the steam curing.

Background art:

reinforced concrete drain pipe comprises framework of steel reinforcement and concrete body usually, and the general intensity of the most reinforced concrete drain pipe on the market is lower at present, is difficult to satisfy partial adverse circumstances's operation requirement, and life reduces, and waterproof nature is relatively poor, and especially reinforced concrete drain pipe is when connecting the installation, because its both ends structural strength is low, connection structure damages easily, causes the drain pipe link to leak, is unfavorable for promoting and using.

The invention content is as follows:

the invention provides a reinforced concrete drain pipe and a production method thereof, and solves the problem of low strength of a connecting structure in the prior art.

The technical solution of the invention is as follows: the utility model provides a reinforced concrete drain pipe, including the concrete body, the concrete body is internal to be inlayed and is had the reinforcing bar frame, concrete body one end is equipped with the mouth of pipe, and the other end is equipped with the mouth of pipe, the shaping has the inserting groove on the inside wall of mouth of pipe, the outer end external diameter of the mouth of pipe of inserting cooperatees with the outer end internal diameter of the mouth of pipe of connecting, the mouth of pipe and the inner annular groove that the reinforcing bar frame can be established to the equal shaping of the mouth of pipe of connecting.

Preferably, the reinforcing steel bar frame comprises a plurality of linear reinforcing steel bars extending along the length direction of the concrete pipe body, the plurality of linear reinforcing steel bars are circumferentially arrayed along the axial lead of the concrete pipe body, and spiral reinforcing steel bars extending along the length direction of the concrete pipe body are welded and fixed on the peripheries of the plurality of linear reinforcing steel bars.

Preferably, the outer side wall of the annular groove extends along the length direction of the concrete pipe body, and the extending section is 1.5-3 times of the length of the inner side wall of the annular groove.

Preferably, the outer side wall and the inner side wall of the socket pipe opening and the joint pipe opening are respectively provided with an annular limiting step surface which is attached to the end surface of the concrete pipe body.

Preferably, a limiting convex ring which can be attached to the outer end face of the connecting pipe opening is formed on the outer side wall of the socket pipe opening.

A production method of a reinforced concrete drain pipe comprises the following steps:

1) blending and stirring the concrete raw materials uniformly to prepare concrete mortar;

2) preparing a reinforcing steel bar frame through a seam welder;

3) casting and prefabricating to obtain a socket opening and a connecting pipe opening;

4) respectively inserting two ends of the reinforcing steel frame prepared in the step 2) into the annular grooves of the pipe inserting opening and the pipe connecting opening prepared in the step 3), placing the two ends into a concrete pipe mould, installing the concrete pipe mould to a centrifugal machine by a gantry crane after mould closing, starting the centrifugal machine, injecting the concrete mortar prepared in the step 1) into the concrete pipe mould during high-speed rotation, attaching the concrete mortar to the inner wall of the concrete pipe mould under the action of centrifugal force, wrapping the reinforcing steel frame, and filling and connecting the pipe connecting opening and the pipe connecting opening;

5) steaming the reinforced concrete drain pipe primary blank prepared in the step 4);

6) and after the steam curing of the initial blank of the reinforced concrete drain pipe is finished, removing the die from the mold.

Preferably, the concrete raw material in the step 1) comprises 200-300 parts of Portland cement, 180-250 parts of river sand, 40-50 parts of graded broken stone, 160-180 parts of water, 9-13 parts of a water reducing agent, 5-9 parts of a retarder and 5-7 parts of a rust inhibitor.

Preferably, in the step 5), steam curing is carried out on the reinforced concrete drain pipe primary blank by using the autoclave, negative pressure is formed in the autoclave by using a vacuum pump, the temperature in the autoclave is kept at 105-120 ℃, water vapor evaporated from the reinforced concrete drain pipe primary blank in the autoclave is pumped out by using the vacuum pump after 40-50 minutes, and the steam curing is completed when the autoclave is cooled to the normal temperature.

The invention has the beneficial effects that: according to the reinforced concrete drain pipe, the internal reinforcing steel bar frame comprises the plurality of linear reinforcing steel bars extending along the length direction of the concrete pipe body and the spiral reinforcing steel bars spirally surrounding the plurality of linear reinforcing steel bars, so that the structure is compact, the radial and axial structural strength and the pressure resistance of the reinforced concrete drain pipe are improved, and the reinforced concrete drain pipe is suitable for popularization and use in various environments with higher requirements on strength;

the two ends of the steel bar frame are provided with a pipe inserting opening and a pipe connecting opening which are matched with each other, and the pipe inserting opening and the pipe connecting opening are prefabricated by adopting a die, so that the structural strength of the two ends of the reinforced concrete drain pipe is ensured;

the outer diameter of the outer end of the pipe inserting opening is matched with the inner diameter of the outer end of the pipe connecting opening, annular grooves capable of inserting the reinforcing steel bar frames are formed in the inner ends of the pipe inserting opening and the pipe connecting opening, the outer side wall of each annular groove extends along the length direction of the concrete pipe body, the extending section is 1.5-3 times of the length of the inner side wall of each annular groove, annular limiting step surfaces attached to the end faces of the concrete pipe body are formed on the outer side wall and the inner side wall of each pipe inserting opening and the pipe connecting opening, and therefore the pipe inserting opening and the pipe connecting opening are reliably connected with the reinforcing steel bar frames and the concrete pipe body, the structural strength of the joints of the plurality of reinforcing steel bar frames after being connected and installed is further guaranteed, and water leakage resistance is achieved;

the rust inhibitor is doped into the raw materials of the concrete pipe body, so that the effect of reducing the oxidation and corrosion conditions of the steel bar framework is achieved while the concrete coats the steel bar framework, the stability and the service life of the internal structure of the reinforced concrete drain pipe are guaranteed, the use requirements of the reinforced concrete drain pipe under the condition of water delivery or water immersion are met, and the use scenes and the range of the reinforced concrete drain pipe are widened;

the concrete pipe body prepared by the production method has the advantages of high hardness and high density, further improves the strength of the reinforced concrete drain pipe, and is beneficial to popularization and use;

adopt the steam maintenance mode to carry out the post processing to the reinforced concrete drain pipe, reduce the condition that the shrink appears in the reinforced concrete drain pipe, prevent consequently the condition that inside fracture appears, further guaranteed the intensity and the quality of this reinforced concrete drain pipe.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention.

In the figure: 1. a concrete pipe body; 2. a reinforcing steel bar frame; 2-1, straight reinforcing steel bars; 2-2, spiral reinforcing steel bars; 3. a cannula port; 3-1, a limit convex ring; 4. a pipe connecting port; 4-1, inserting grooves; 5. an annular groove; 6. annular spacing step face.

The specific implementation mode is as follows:

the reinforced concrete drain pipe and the production method thereof of the invention are further explained with reference to the attached figure 1.

The invention relates to a reinforced concrete drain pipe, which comprises a concrete pipe body 1, wherein a reinforcing steel bar frame 2 is embedded in the concrete pipe body 1, one end of the concrete pipe body 1 is provided with an inserting pipe opening 3, the other end of the concrete pipe body is provided with a connecting pipe opening 4, an inserting groove 4-1 is formed in the inner side wall of the connecting pipe opening 4, the outer end outer diameter of the inserting pipe opening 3 is matched with the outer end inner diameter of the connecting pipe opening 4, and annular grooves 5 in which the reinforcing steel bar frame can be inserted are formed in the inserting pipe opening 3 and the inner end of the connecting pipe opening 4.

Furthermore, the reinforcing steel bar frame 2 comprises a plurality of linear reinforcing steel bars 2-1 extending along the length direction of the concrete pipe body 1, the plurality of linear reinforcing steel bars 2-1 are circumferentially arrayed along the axial lead of the concrete pipe body 1, and spiral reinforcing steel bars 2-2 extending along the length direction of the concrete pipe body 1 are welded and fixed on the peripheries of the plurality of linear reinforcing steel bars 2-1.

Further, the lateral wall of ring channel 5 extends along concrete pipe 1 length direction, and the extension is 2 times of ring channel inside wall length.

Furthermore, the outer side wall and the inner side wall of the pipe inserting port 3 and the pipe connecting port 4 are respectively provided with an annular limiting step surface 6 which is attached to the end surface of the concrete pipe body 1.

Furthermore, a limit convex ring 3-1 which can be attached to the outer end face of the connecting pipe opening 4 is formed on the outer side wall of the inserting pipe opening 3.

A production method of a reinforced concrete drain pipe comprises the following steps:

1) blending and stirring the concrete raw materials uniformly to prepare concrete mortar;

2) preparing a reinforcing steel bar frame 2 through a seam welder;

3) casting and prefabricating to obtain a socket opening 3 and a connecting pipe opening 4;

4) inserting two ends of the reinforcing steel bar frame 2 prepared in the step 2) into the annular grooves 5 of the pipe inserting port 3 and the pipe connecting port 4 prepared in the step 3) respectively, placing the two ends into a concrete pipe body mould, installing the concrete pipe body mould to a centrifugal machine by a gantry crane after mould closing, starting the centrifugal machine, injecting the concrete mortar prepared in the step 1) into the concrete pipe body mould during high-speed rotation, attaching the concrete mortar to the inner wall of the concrete pipe body mould under the action of centrifugal force, wrapping the reinforcing steel bar frame 2, and filling and connecting the pipe inserting port 3 and the pipe connecting port 4;

5) steaming the reinforced concrete drain pipe primary blank prepared in the step 4);

6) and after the steam curing of the initial blank of the reinforced concrete drain pipe is finished, removing the die from the mold.

Further, in the step 1), the concrete raw materials comprise 200-300 parts of Portland cement, 180-250 parts of river sand, 40-50 parts of graded broken stone, 160-180 parts of water, 9-13 parts of a water reducing agent, 5-9 parts of a retarder and 5-7 parts of a rust inhibitor.

Further, in the step 5), steam curing is carried out on the reinforced concrete drain pipe primary blank by using the autoclave, negative pressure is formed in the autoclave by using a vacuum pump, the temperature in the autoclave is kept at 105-120 ℃, water vapor evaporated from the reinforced concrete drain pipe primary blank in the autoclave is pumped out by using the vacuum pump after 40-50 minutes, and the steam curing is completed when the autoclave is cooled to the normal temperature.

The above description is only a preferred embodiment of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work shall fall within the scope of the present invention.