Production method of foamed concrete board with embedded vacuum tube

Abstract

The present invention relates to a method for producing a foamed concrete board with an embedded vacuum tube, comprising the following process steps: 1) forming a box-shaped mold with a certain depth by means of a steel side mold and a steel bottom mold according to design requirements; 2) sequentially arranging multiple groups of structural steel bars and grouped vacuum tube assemblies, reserving cutting dimensions; stretching the structural steel bars and high-temperature resistant plastic cables into a straight line; 3) pouring the foamed concrete, vibrating it, and steam-curing it; 4) demolding the concrete and cutting it according to a predetermined module to form a finished board, without cutting the vacuum tube assemblies. The method for producing a foamed concrete board with an embedded vacuum tube of the present invention can significantly reduce the heat transfer coefficient by embedding the vacuum tubes in the foamed concrete, thereby meeting the requirements of ultra-low energy consumption buildings.

Description

Technical Field

[0001] The invention relates to a production method of a concrete slab, in particular to a production method of a foamed concrete slab with embedded vacuum tubes, and belongs to the technical field of building materials. Background Art

[0002] Existing autoclaved aerated concrete panels are typically composed of aerated concrete and structural steel bars. Their thermal insulation performance is primarily achieved through the aerated concrete, with a heat transfer coefficient of approximately 0.13 W / m·K. Therefore, in hot summer and cold winter regions, a thickness of 250 mm or more is required to meet energy-saving requirements.

[0003] At present, some manufacturers use the technology of embedded extruded boards to reduce the heat transfer coefficient, but basically they can only achieve around 0.1W / m·K. This can reduce the wall thickness under conventional energy-saving requirements, but it cannot meet the needs of ultra-low energy consumption buildings.

[0004] Therefore, in order to solve the above technical problems, it is necessary to provide an innovative production method of foamed concrete panels with embedded vacuum tubes to overcome the above defects in the prior art. Summary of the Invention

[0005] To solve the above problems, the purpose of the present invention is to provide a method for producing a foamed concrete board with embedded vacuum tubes, which can greatly reduce the heat transfer coefficient and meet the needs of ultra-low energy consumption buildings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a method for producing a foamed concrete board with embedded vacuum tubes, wherein the foamed concrete board with embedded vacuum tubes comprises a foamed concrete body, structural steel bars, and a plurality of vacuum tube assemblies; wherein the structural steel bars and vacuum tube assemblies are cast within the foamed concrete body, and the structural steel bars and vacuum tube assemblies are arranged parallel to each other; the vacuum tube assemblies are connected into a modular strip-shaped group by high-temperature resistant plastic ropes; and the vacuum tube assemblies are enclosed in an aerogel protective sleeve.

[0007] The vacuum tube assembly includes a thin stainless steel shell, a supporting umbrella frame, a stainless steel vacuum plug, and a stainless steel protective cover; wherein the supporting umbrella frame is inserted into the thin stainless steel shell and can support the thin stainless steel shell; the stainless steel vacuum plug is arranged on the top of the thin stainless steel shell and seals the thin stainless steel shell; the stainless steel protective cover is arranged on the top of the stainless steel vacuum plug;

[0008] A medicine chamber is provided at the bottom of the thin stainless steel shell, and the medicine chamber is filled with a degassing agent; an umbrella stand positioning groove is provided at the top of the medicine chamber; and a plurality of air holes are opened on the side wall of the medicine chamber;

[0009] The umbrella stand comprises a fixed rod, a first telescopic rod, a first support rod, a second telescopic rod, a second support rod and a glass push rod connected in sequence; one end of the fixed rod is provided with a positioning head, which is inserted into a positioning groove of the umbrella stand; the first support rod and the second support rod can be opened to support the thin stainless steel shell;

[0010] The production method of the foamed concrete board with embedded vacuum tubes comprises the following process steps:

[0011] 1) According to the design requirements, a box-shaped mold with a certain depth is composed of a steel side mold and a steel bottom mold;

[0012] 2) Arrange multiple groups of structural steel bars and groups of vacuum tube components in sequence, and reserve cutting dimensions; stretch the structural steel bars and high-temperature resistant plastic cables into a straight line;

[0013] 3) Pour foamed concrete and vibrate and steam-cure;

[0014] 4) De-moulding and cutting into finished plates according to the predetermined module, without cutting the vacuum tube components.

[0015] The production method of the foamed concrete board with embedded vacuum tubes of the present invention further comprises the following steps: an exhaust hole is provided in the center of the stainless steel vacuum plug, and the supporting umbrella frame passes through the exhaust hole.

[0016] The production method of the foamed concrete board with embedded vacuum tubes of the present invention further comprises: the stainless steel protective cover is screwed to the thin stainless steel shell through threads, and the stainless steel protective cover presses the stainless steel vacuum plug.

[0017] The production method of the foamed concrete board with embedded vacuum tubes of the present invention further comprises: a pull ring is respectively provided on the top of the stainless steel protective cover and the bottom of the thin stainless steel shell, and the high-temperature resistant plastic rope is connected to the pull ring.

[0018] The production method of the foamed concrete board with embedded vacuum tubes of the present invention is further as follows: the production method of the vacuum tube assembly is:

[0019] 1) Weld a pull ring at the bottom of the thin stainless steel shell and process the internal thread on the top;

[0020] 2) Attach the reagent chamber filled with degassing agent to the bottom of the thin stainless steel shell;

[0021] 3) Insert the umbrella support frame into the thin stainless steel shell and place the positioning head into the positioning groove of the umbrella frame. Then, insert the exhaust hole of the stainless steel vacuum plug through the glass push rod of the umbrella support frame into the space reserved in the thin stainless steel shell. Use stainless steel flux to weld and seal the gap between the outer thin stainless steel shell and the stainless steel vacuum plug.

[0022] 4) Push the glass push rod supporting the umbrella stand, driving the first telescopic rod and the second telescopic rod to insert into the fixed rod, driving the first support rod and the second support rod to open and press against the inner wall of the thin stainless steel shell to form a support;

[0023] 5) Cut off the excess part of the glass push rod and evacuate the air through the vacuum hole of the stainless steel vacuum plug. After reaching the predetermined vacuum degree, melt the glass push rod to form a glass seal for vacuum sealing;

[0024] 6) Screw the stainless steel protective cover onto the thin stainless steel shell until the stainless steel protective cover presses the stainless steel vacuum plug tightly to complete the assembly.

[0025] The production method of the foamed concrete plate with embedded vacuum tubes of the present invention further comprises: the thin stainless steel shell is formed by a spinning or welding process.

[0026] The production method of the foamed concrete board with embedded vacuum tubes of the present invention can also be as follows: a mounting sleeve is pre-embedded in the foamed concrete body, and a group of short vacuum tube components are arranged at the mounting sleeve position to avoid the mounting sleeve position.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The method for producing a foamed concrete board with embedded vacuum tubes of the present invention can greatly reduce the heat transfer coefficient by embedding vacuum tubes in the foamed concrete, thereby meeting the requirements of ultra-low energy consumption buildings.

[0029] 2. The vacuum tube in the method for producing a foamed concrete board with embedded vacuum tubes of the present invention adopts an umbrella-shaped support mechanism, so that the vacuum tube can be evacuated without being crushed even in a very thin wall state.

[0030] 3. The method for producing the foamed concrete board with embedded vacuum tubes of the present invention can adjust the board size according to the module and is suitable for the processing technology of cutting after group production of autoclaved aerated concrete boards, thereby greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a plan view of the foamed concrete board with embedded vacuum tubes according to the present invention.

[0032] Figure 2 It is a cross-sectional view of the foamed concrete board with embedded vacuum tubes according to the present invention.

[0033] Figure 3 yes Figure 1 Schematic diagram of the structure of the vacuum tube.

[0034] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0035] Figure 5 yes Figure 3 Schematic diagram of the structure of the supporting umbrella stand.

[0036] Figure 6 yes Figure 3 Schematic diagram of the structure of the stainless steel vacuum plug.

[0037] Figure 7 yes Figure 1 The production flow chart of vacuum tubes in .

[0038] Figure 8 This is a schematic diagram of the group production of foamed concrete panels with embedded vacuum tubes in a mold according to the present invention. DETAILED DESCRIPTION

[0039] Please refer to the instruction manual Figure 1 To the attached Figure 6 As shown, the present invention is a foamed concrete plate with embedded vacuum tubes, which is composed of a foamed concrete body 1, structural steel bars 2, and a plurality of vacuum tube assemblies 3.

[0040] The structural steel bars 2 and vacuum tube assembly 3 are cast within the foamed concrete body 1, parallel to each other, ensuring they do not interfere with each other. By embedding the vacuum tube assembly 3 within the foamed concrete body 1, the heat transfer coefficient is significantly reduced, meeting the requirements of ultra-low energy buildings. Furthermore, the structural steel bars 2 significantly enhance the structural strength of the foamed concrete panel.

[0041] The vacuum tube assembly 3 is connected to form a modular strip group by a high temperature resistant plastic rope 4, so that foamed concrete panels of different sizes can be produced. The vacuum tube assembly 3 is wrapped with an aerogel protective cover 5 to prevent collision.

[0042] The vacuum tube assembly 3 is composed of a thin stainless steel shell 31 , a supporting umbrella frame 32 , a stainless steel vacuum plug 33 and a stainless steel protective cover 34 .

[0043] Since stainless steel is a poor conductor of heat for exterior wall applications, using thick stainless steel would result in significant heat loss. Therefore, this embodiment utilizes a thin stainless steel shell 31. Reducing the thickness of the thin stainless steel shell 31 also reduces the weight of the foamed concrete board, saving costs. A reagent chamber 311 is located at the bottom of the thin stainless steel shell 31. The chamber 311 is filled with a degassing agent 312, which absorbs gas within the thin stainless steel shell 31. An umbrella stand positioning groove 313 is located at the top of the chamber 311, which is used to position and support the umbrella stand 32. Several air holes 314 are provided in the sidewalls of the chamber 311 to facilitate gas absorption by the degassing agent 312.

[0044] The umbrella support frame 32 is inserted into the thin stainless steel shell 31, and can support the thin stainless steel shell 31 to prevent the thin stainless steel shell 31 from being crushed by a vacuum. The umbrella support frame 32 is composed of several parts connected in sequence, including a fixed rod 321, a first telescopic rod 322, a first support rod 323, a second telescopic rod 324, a second support rod 325, and a glass push rod 326. A positioning head 327 is provided at one end of the fixed rod 321, and the positioning head 327 is inserted into the umbrella frame positioning groove 313. The first telescopic rod 322 and the second telescopic rod 324 can be inserted into the fixed rod 321 to achieve the extension and retraction of the umbrella support frame 32. The first support rod 323 and the second support rod 325 are similar to umbrella ribs and can be opened to support the thin stainless steel shell 31. The glass push rod 326 can drive the first support rod 323 and the second support rod 325 to open.

[0045] The stainless steel vacuum plug 33 is mounted on top of the thin stainless steel shell 31 and seals the thin stainless steel shell 31. A vacuum hole 331 is centrally located within the stainless steel vacuum plug 33, through which gas within the thin stainless steel shell 31 can be extracted. The umbrella support frame 32 extends through the vacuum hole 331.

[0046] The stainless steel protective cover 34 is disposed on top of the stainless steel vacuum plug 33. In this embodiment, the stainless steel protective cover 34 is screwed to the thin stainless steel shell 31 via threads, and the stainless steel protective cover 34 presses against the stainless steel vacuum plug 33, thereby sealing the glass seal and preventing air leakage caused by breakage.

[0047] Furthermore, a pull ring 35 is provided on the top of the stainless steel protective cover 34 and the bottom of the thin stainless steel shell 31 , respectively, and the high-temperature resistant plastic rope 4 is connected to the pull ring 35 .

[0048] A mounting sleeve 6 is also embedded in the foamed concrete body 1 , and a group of short vacuum tube components 7 are provided at the position of the mounting sleeve 6 to avoid the position of the mounting sleeve 6 .

[0049] Please refer to the instruction manual Figure 7 As shown, the vacuum tube assembly 3 is produced by the following method:

[0050] 3-1) A pull ring 35 is welded to the bottom of the thin stainless steel shell 31 and an internal thread is machined on the top. In this embodiment, the thin stainless steel shell 31 is formed by spinning or welding.

[0051] 3-2) The reagent chamber 311 filled with the degassing agent 312 is bonded centrally to the bottom of the thin stainless steel shell 31.

[0052] 3-3) Insert the umbrella support frame 32 into the thin stainless steel housing 31, and place the positioning head 327 in the umbrella frame positioning groove 313. Then, insert the exhaust hole 331 of the stainless steel vacuum plug 33 through the glass push rod 326 of the umbrella support frame 32 into the reserved space in the thin stainless steel housing 31. Use stainless steel flux to weld and seal the gap between the outer thin stainless steel housing 31 and the stainless steel vacuum plug 33.

[0053] 3-4), push the glass push rod 326 supporting the umbrella stand 32, drive the first telescopic rod 322 and the second telescopic rod 324 to insert into the fixed rod 321, drive the first support rod 323 and the second support rod 325 to open, and press against the inner wall of the thin stainless steel shell 31 to form a support.

[0054] 3-5), cut off the excess part of the glass push rod 326, and evacuate the air through the exhaust hole 331 of the stainless steel vacuum plug 33. After reaching a predetermined vacuum degree, melt the glass push rod 326 to form a glass seal for vacuum sealing.

[0055] 3-6) Screw the stainless steel protective cover 34 onto the thin stainless steel shell 31 until the stainless steel protective cover 34 presses the stainless steel vacuum plug 33 to complete the assembly.

[0056] The vacuum tube assembly 3 manufactured in the above manner adopts an umbrella-shaped support mechanism, so that the vacuum tube can be evacuated without being flattened in a very thin wall state.

[0057] Please continue to refer to the instructions attached Figure 8 As shown, the production method of the foamed concrete board with embedded vacuum tubes of the present invention includes the following process steps:

[0058] 1) According to the design requirements, a box-shaped mold with a certain depth is composed of a steel side mold 8 and a steel bottom mold 9.

[0059] 2) Arrange multiple groups of structural steel bars 2 and vacuum tube assemblies 3 in sequence, reserving cutting dimensions. Stretch the structural steel bars 2 and high-temperature resistant plastic cables 4 into a straight line.

[0060] 3) Pour foamed concrete and vibrate and steam-cure it.

[0061] 4) De-moulding and cutting into finished plates according to the predetermined module, without cutting the vacuum tube components.

[0062] The foamed concrete board with embedded vacuum tube produced by the above method can adjust the board size according to the module and adapt to the processing technology of cutting after group production of autoclaved aerated concrete boards, so that the production efficiency is greatly improved.

[0063] The above specific implementation methods are only preferred embodiments of this creation and are not intended to limit this creation. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation should be included in the scope of protection of this creation.

Claims

1. A method for producing a foamed concrete board with an embedded vacuum tube, characterized in that: The foamed concrete board with embedded vacuum tubes comprises a foamed concrete body, structural steel bars, and a plurality of vacuum tube assemblies; wherein the structural steel bars and vacuum tube assemblies are cast in the foamed concrete body, and the structural steel bars and vacuum tube assemblies are arranged parallel to each other; the vacuum tube assemblies are connected into a strip-shaped group that meets the module through high-temperature resistant plastic ropes; and the vacuum tube assemblies are covered with an aerogel protective sleeve. The vacuum tube assembly includes a thin stainless steel shell, a supporting umbrella frame, a stainless steel vacuum plug, and a stainless steel protective cover; wherein the supporting umbrella frame is inserted into the thin stainless steel shell and can support the thin stainless steel shell; the stainless steel vacuum plug is arranged on the top of the thin stainless steel shell and seals the thin stainless steel shell; the stainless steel protective cover is arranged on the top of the stainless steel vacuum plug; A medicine chamber is provided at the bottom of the thin stainless steel shell, and the medicine chamber is filled with a degassing agent; an umbrella stand positioning groove is provided at the top of the medicine chamber; and a plurality of air holes are opened on the side wall of the medicine chamber; The umbrella stand comprises a fixed rod, a first telescopic rod, a first support rod, a second telescopic rod, a second support rod and a glass push rod connected in sequence; one end of the fixed rod is provided with a positioning head, which is inserted into a positioning groove of the umbrella stand; the first support rod and the second support rod can be opened to support the thin stainless steel shell; The production method of the foamed concrete board with embedded vacuum tubes comprises the following process steps: 1) According to the design requirements, a box-shaped mold with a certain depth is composed of a steel side mold and a steel bottom mold; 2) Arrange multiple groups of structural steel bars and groups of vacuum tube components in sequence, and reserve cutting dimensions; stretch the structural steel bars and high-temperature resistant plastic cables into a straight line; 3) Pour foamed concrete and vibrate and steam-cure; 4) De-moulding and cutting into finished plates according to the predetermined module, without cutting the vacuum tube components.

2. The method for producing a foamed concrete board with an embedded vacuum tube according to claim 1, wherein: An air extraction hole is provided in the center of the stainless steel vacuum plug, and the supporting umbrella frame passes through the air extraction hole.

3. The method for producing a foamed concrete board with embedded vacuum tubes according to claim 1, wherein: The stainless steel protective cover is screwed to the thin stainless steel shell through a thread, and the stainless steel protective cover presses the stainless steel vacuum plug tightly.

4. The method for producing a foamed concrete board with embedded vacuum tubes according to claim 1, wherein: The top of the stainless steel protective cover and the bottom of the thin stainless steel shell are respectively provided with a pull ring, and the high-temperature resistant plastic rope is connected to the pull ring.

5. The method for producing a foamed concrete board with embedded vacuum tubes according to claim 1, wherein: The production method of the vacuum tube assembly is as follows: 3-1) Weld a pull ring at the bottom of the thin stainless steel shell and process the internal thread on the top; 3-2) Attach the reagent chamber filled with degassing agent to the bottom of the thin stainless steel shell; 3-3) Insert the umbrella support frame into the thin stainless steel shell and place the positioning head into the positioning groove of the umbrella frame; then insert the exhaust hole of the stainless steel vacuum plug through the glass push rod of the umbrella support frame into the space reserved in the thin stainless steel shell, and use stainless steel flux to weld and seal the gap between the outer thin stainless steel shell and the stainless steel vacuum plug; 3-4) Push the glass push rod supporting the umbrella stand, driving the first telescopic rod and the second telescopic rod to insert into the fixed rod, driving the first support rod and the second support rod to open and press against the inner wall of the thin stainless steel shell to form a support; 3-5) Cut off the excess part of the glass push rod, and evacuate the air through the vacuum hole of the stainless steel vacuum plug. After reaching the predetermined vacuum degree, melt the glass push rod to form a glass seal for vacuum sealing; 3-6) Screw the stainless steel protective cover onto the thin stainless steel shell until the stainless steel protective cover presses the stainless steel vacuum plug tightly to complete the assembly.

6. The method for producing a foamed concrete board with embedded vacuum tubes according to claim 5, characterized in that: The thin stainless steel shell is formed by a spinning or welding process.

7. The method for producing a foamed concrete board with embedded vacuum tubes according to claim 1, wherein: A mounting sleeve is pre-buried in the foamed concrete body, and a group of short vacuum tube components is arranged at the position of the mounting sleeve to avoid the position of the mounting sleeve.

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