Automatic finishing device for reinforced concrete pipe

Abstract

The invention discloses an automatic plastering device for reinforced concrete pipes, comprising a circular pipe mold of a concrete pipe, a cement slurry conveying device and a grouting device, wherein the cement slurry conveying device is installed at the outer lower end of the circular pipe mold, the grouting device is installed at the lower end of the circular pipe mold, the cement slurry conveying device comprises a cement slurry inlet, a cement pump and a cement slurry outlet, the grouting device comprises a grouting pipe and a grouting hole, the grouting pipe surrounds the circular pipe mold and is located at the lower end of the circular pipe mold, a grouting hole is provided in the grouting pipe at intervals of 10 cm-15 cm, the cement slurry inlet is connected to the cement pump inlet, the cement slurry outlet is connected to the cement pump outlet, and the cement slurry outlet is connected to the grouting pipe; the cement slurry of the invention is sprayed evenly and in place, thus preventing the unevenness of manual operation, saving labor and material costs for plastering slurry, and improving the overall production efficiency; at the same time, the slurry spraying has a certain pressure to ensure that the surface pores are filled densely, thereby improving the appearance quality of the product.

Description

Technical Field

[0001] The invention relates to a concrete device, in particular to a device for automatically plastering reinforced concrete pipes. Background Art

[0002] Reinforced concrete drainage pipe refers to a concrete circular pipe with a single or multi-layer steel skeleton in the pipe wall, referred to as RCP. my country has a history of more than 100 years in producing concrete drainage pipes. At present, China produces about 40,000 km of concrete drainage pipes each year, with about 5,000 production enterprises. It is the country that produces and uses the most concrete pipes in the world today. It is widely used in laying rainwater, sewage, water diversion and farmland irrigation pipes in urban construction, industrial and mining enterprise construction, and farmland water conservancy construction in China. It is an important building material product that is indispensable in China's national economic construction.

[0003] Over the past few years, through the efforts of engineering and technical personnel and management personnel in the scientific research, design, colleges and universities, production, construction, quality supervision and other departments of the industry, the production scale of my country's drainage pipe industry has expanded, the variety has increased, the production equipment and technical level have improved, and the production process methods have become diversified. According to the molding principle, the pipe making process is mainly divided into: centrifugal molding process, hanging roller molding process, vertical vibration molding process, core mold vibration molding process and radial extrusion molding process. At present, due to the advantages of high production efficiency, low energy consumption, and good intrinsic quality of the molding process, the core mold vibration molding process and radial extrusion molding process have become the mainstream of RPC production process. The radial extrusion molding process is generally used for the production of pipes below DN1200, and the core mold vibration molding process is generally used for the production of pipes above DN1000, which is the mainstream of RCP.

[0004] However, the core mold vibration forming process uses dry hard concrete, which can be demoulded immediately in a wet state after forming. This also makes the outer wall of the pipe produced by the core mold vibration forming process relatively rough, which is not accepted by the market, so it needs to be treated with plastering. At present, all manufacturers in the industry use manual plastering, which requires a lot of manpower, and the smoothness of the outer wall is limited by the workers' experience and craftsmanship. There are often uneven plastering, poor surface finish, and micro cracks on the surface after long-term storage, which affects the overall reputation of the pipe. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes an automatic plastering device for reinforced concrete pipes. The technical solution adopted by the present invention is: an automatic plastering device for reinforced concrete pipes, comprising a circular pipe mold of a concrete pipe, a cement slurry conveying device and a grouting device, wherein the cement slurry conveying device is installed at the lower end of the outer side of the circular pipe mold, the grouting device is installed at the lower end of the circular pipe mold, the cement slurry conveying device comprises a cement slurry inlet, a cement pump and a cement slurry outlet, the grouting device comprises a grouting pipe and a grouting hole, the grouting pipe surrounds the circular pipe mold and is located at the lower end of the outer side of the circular pipe mold, the grouting pipe opens a grouting hole every 10cm-15cm, the cement slurry inlet is connected to the cement pump inlet, the cement slurry outlet is connected to the cement pump outlet, and the cement slurry outlet is connected to the grouting pipe.

[0006] Furthermore, the grouting pipe is a stainless steel round pipe.

[0007] Furthermore, the inner diameter of the grouting pipe is 10mm-12mm.

[0008] Furthermore, the grouting holes are stainless steel round holes.

[0009] Furthermore, the inner diameter of the grouting hole is 6mm-8mm.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The cement slurry of the present invention is sprayed evenly and in place, which prevents the unevenness of manual operation, resulting in obvious color difference in the appearance of the finished product, affecting the overall reputation of the pipe.

[0012] 2. The cement slurry spraying of the present invention has a certain pressure to ensure that the surface pores are filled densely, thereby preventing the surface from being filled incompletely by manual operation, so that the pore surface will be broken after the curing is completed, and holes will still exist, which may even affect the anti-seepage performance.

[0013] 3. This automatic plastering device is highly efficient. It only needs to remove the outer mold, spray and smooth at the same time during the outer mold removal process, and the molding can be completed in one time, saving the labor and material waste of manual plastering and improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0015] Figure 1 It is a front view of the present invention;

[0016] Figure 2It is a partial enlarged view of the present invention.

[0017] The device and equipment names corresponding to the marks in the attached drawings are:

[0018] In the figure, 1 is a circular pipe mold of a concrete pipe, 2 is a cement slurry inlet, 3 is a cement pump, 4 is a cement slurry outlet, 5 is a grouting pipe, and 6 is a grouting hole. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0020] The core of the invention is to provide an automatic plastering device for reinforced concrete pipes, which can realize automatic plastering of concrete pipes.

[0021] Figure 1 This is the front view of the present invention. Figure 2 This is a partial enlarged view of the present invention. Figure 1 and Figure 2 As shown, the present invention is an automatic plastering device for reinforced concrete pipes, comprising a circular pipe mold 1 for concrete pipes, a cement slurry conveying device and a grouting device, the cement slurry conveying device is installed at the lower end of the outer side of the circular pipe mold 1, the grouting device is installed at the lower end of the circular pipe mold 1, the cement slurry conveying device comprises a cement slurry inlet 2, a cement pump 3 and a cement slurry outlet 4, the grouting device comprises a grouting pipe 5 and a grouting hole 6, the grouting pipe 5 surrounds the circular pipe mold 1 and is located at the lower end of the circular pipe mold 1, the grouting pipe 5 opens a grouting hole 6 at a distance of 10cm-15cm, the cement slurry inlet 2 is connected to the inlet of the cement pump 3, the cement slurry outlet 4 is connected to the outlet of the cement pump 3, and the cement slurry outlet 4 is connected to the grouting pipe 5.

[0022] Specifically, the grouting pipe 5 is a stainless steel round pipe.

[0023] Specifically, the inner diameter of the grouting pipe 5 is 10 mm-12 mm.

[0024] Specifically, the grouting hole 6 is a stainless steel round hole.

[0025] Specifically, the inner diameter of the grouting hole 6 is 6 mm-8 mm.

[0026] Working principle of the present invention: a grouting pipe 5 is arranged on the outer side of the bottom of the circular pipe mold 1 of the concrete pipe, and the grouting pipe 5 surrounds the circular pipe mold 1. A circle of grouting holes 6 with a diameter of 6mm-8mm is arranged on the inner side of the bottom of the circular pipe mold 1. The grouting holes 6 are connected with the grouting pipe 5. The cement slurry enters through the cement slurry inlet 2. The cement pump 3 pressurizes the cement slurry to increase the flow rate of the cement slurry. The cement slurry enters the grouting pipe 5 through the cement slurry outlet 4. Due to the effect of the added pressure, the flow rate of the cement slurry after entering the grouting pipe 5 is still very large, so that the cement slurry is sprayed out through the grouting holes 6. The cement slurry is sprayed on the surface of the concrete pipe through the grouting holes 6. The cement slurry falls on the surface of the concrete pipe. It will flow down along the surface of the pipe wall, and part of it will bounce on the inner wall of the circular pipe mold 1 of the concrete pipe. The inner wall will block the cement slurry back and let it fall on the surface of the concrete pipe again and flow down along the surface of the pipe wall. In this way, the cement slurry is dispersed under the action of spraying and the inner wall of the circular pipe mold 1 of the concrete pipe, and is basically evenly coated on the surface of the concrete pipe, so as to achieve the effect of covering and smoothing the surface of the concrete pipe; the grouting pipe 5 can realize continuous replenishment of cement slurry to meet the needs of continuous spraying. After the concrete pipe is formed, it will be demoulded. When demoulding, the circular pipe mold 1 is lifted while the grouting pipe 5 cooperates with the grouting hole 6 to continue to spray cement slurry onto the surface of the concrete pipe. After the outer mold is demoulded, the surface is finished.

[0027] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope of the present application is indicated by the claims.

[0028] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. An automatic facing device for reinforced concrete pipes, comprising a circular pipe mold (1) for concrete pipes, a cement slurry conveying device and a grouting device, characterized in that: The cement slurry conveying device is installed at the lower end of the outer side of the circular pipe mold (1), and the grouting device is installed at the lower end of the circular pipe mold (1). The cement slurry conveying device comprises a cement slurry inlet (2), a cement pump (3) and a cement slurry outlet (4). The grouting device comprises a grouting pipe (5) and a grouting hole (6). The grouting pipe (5) surrounds the circular pipe mold (1) and is located at the lower end of the outer side of the circular pipe mold (1). The grouting pipe (5) has a grouting hole (6) at intervals of 10 cm to 15 cm. The cement slurry inlet (2) is connected to the inlet of the cement pump (3), the cement slurry outlet (4) is connected to the outlet of the cement pump (3), and the cement slurry outlet (4) is connected to the grouting pipe (5).

2. The automatic plastering device for reinforced concrete pipes according to claim 1 is characterized in that: The grouting pipe (5) is a stainless steel round pipe.

3. The automatic plastering device for reinforced concrete pipes according to claim 1 is characterized in that: The inner diameter of the grouting pipe (5) is 10 mm-12 mm.

4. The automatic finishing device for reinforced concrete pipe according to claim 1 is characterized in that: The grouting hole (6) is a stainless steel round hole.

5. The automatic finishing device for reinforced concrete pipe according to claim 1 is characterized in that: The inner diameter of the grouting hole (6) is 6mm-8mm.

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