Concrete prefabricated part curing and forming device

Abstract

The invention discloses a precast concrete curing and forming device. The precast concrete curing and forming device comprises a rectangular brick body; a water tank is formed in the bottom of the rectangular brick body; a water outlet is formed in the bottom of the lower end of the water tank; the water outlet is communicated with an embedded pipe with a zigzag structure, and the other end of the embedded pipe is communicated with a circulating pump; a sealing cover is arranged on the upper portion of the rectangular brick body, and the cross section of the sealing cover is of an arc-shaped structure. An arc-shaped cavity is formed in the sealing cover; the internal circulation of the water body enables the interior of the formed container to keep a state that the total amount of air and the water body is not changed, so that the formed precast concrete curing environment keeps high relative humidity and stable temperature, the thermodynamic principle is fully utilized, the heat preservation advantage of soil is utilized, energy consumption of the precast concrete curing environment is reduced, and energy conservation and emission reduction are achieved. And a uniform and sufficient water vapor environment can be obtained by curing the precast concrete, so that the precast concrete with excellent quality and good structural performance can be produced.

Description

Technical Field

[0001] The invention belongs to the technical field of precast concrete part curing, and in particular relates to a precast concrete part curing and forming device. Background Art

[0002] Precast concrete is a finished building component that has the advantages of scalable production, short construction period, cost savings, and easy quality control. It is widely used in construction, transportation, water conservancy and other fields. In order to control the quality of concrete, manufacturers need to carry out meticulous maintenance when producing precast concrete parts until their structural properties are fully formed.

[0003] According to the "Standard Test Method for Mechanical Properties of Ordinary Concrete" GB / T50081 and the "Concrete Structure Engineering Construction Quality Acceptance Code" GB 50204, the maintenance standard for precast concrete should be carried out in an environment with a temperature of 20±2℃ and a relative humidity maintained above 95%.

[0004] A Chinese patent with publication number CN208529379U discloses a steam curing device for the production of precast concrete components, which uses a curing hood to cover the concrete, and then uses a steam generator, a steam main pipe and a steam pipeline to input steam into the curing hood, thereby achieving the purpose of steam curing the concrete.

[0005] According to the principles of thermodynamics, if a container containing a small amount of water is placed in a constant temperature environment, when the evaporation rate of water in the container is equal to the condensation rate, the air humidity in this equilibrium state will tend to 100% because the water vapor in the container cannot escape and the temperature remains unchanged.

[0006] In the technical solution disclosed in the above patent, a curing cover is used to cover the concrete, and then steam is continuously filled inside the curing cover to achieve the purpose of curing. However, since the air outside the curing cover is in an environment with variable temperature, the curing cover of this solution is in direct contact with the air, which makes it very easy for the curing cover, the container, to exchange heat with the air. The energy utilization rate is low. It is difficult to achieve a relative humidity of more than 95% as required by the national standard at low output power. When the curing period is about one month, energy loss is a problem worth considering. At the same time, since the steam inside the curing hood is provided by the steam generator, steam must be continuously transported into it. The steam will inevitably carry new air into the curing hood, affecting the total amount of air, making it difficult for the curing hood to reach a balanced state. Moreover, when the air inside the curing hood tends to be saturated, it will inevitably find a breakthrough to escape. Therefore, even if the curing hood is in a water-sealed state, steam will be forced to leak out, affecting the curing effect and causing energy waste. In addition, during the heat exchange between the curing hood and the external air, the steam will continuously liquefy and condense, resulting in many small water droplets on the inner wall of the curing hood. These small water droplets will merge into a larger water flow after long-term accumulation, which will not only affect the workshop environment, but may also drip onto the precast concrete, affecting the quality of the concrete. Summary of the invention

[0007] One of the purposes of the present invention is to provide a concrete precast curing and molding device to solve the problem in the prior art that curing precast concrete not only requires the output of more energy, but also causes serious energy loss and wastes resources; The second purpose of the present invention is to provide a precast concrete curing and molding device to solve the problem in the prior art that steam liquefaction condensation dripping may cause pits on the precast concrete surface, affecting product quality and water droplets accumulate to affect the workshop environment.

[0008] The purpose of the present invention can be achieved through the following technical solutions: A concrete prefabricated part curing and forming device comprises a rectangular brick body; a water tank is provided at the bottom of the rectangular brick body, a water outlet is provided at the bottom of the lower end of the water tank; the water outlet is connected to a pre-buried pipe with a folded structure, and the other end of the pre-buried pipe is connected to a circulation pump; A sealing cover is arranged on the upper part of the rectangular brick body, and the cross section of the sealing cover is an arc-shaped structure; an arc-shaped cavity is provided inside the sealing cover; a reflux hole is provided in the middle part of the sealing cover corresponding to the position below the arc-shaped cavity, and the reflux hole is connected to the output end of the circulation pump; a through groove is provided in the sealing cover corresponding to the position between the reflux hole and the arc-shaped cavity; A rectangular plug-in block is fixedly connected to the outer edge of the lower surface of the sealing cover; the plug-in block is provided with evenly distributed first through holes, which are connected to the arc-shaped cavity; a slot is provided at the top of the rectangular brick body corresponding to the position of the plug-in block, and the slot is slightly larger than the plug-in block; a plurality of evenly distributed second through holes are provided at the position of the rectangular brick body corresponding to the slot.

[0009] Preferably, the inner diameter of the second through hole is smaller than that of the first through hole; a vertical plate is fixedly provided on the inner wall of the rectangular brick body; the slot, the insert block and the vertical plate are combined to form a cavity, and the cross section of the cavity presents a U-shaped structure.

[0010] Preferably, the upper portion of the vertical plate is located in the middle of the slot.

[0011] Preferably, the upper end of the vertical plate presents a smooth arc structure, and the surface of the vertical plate is polished and smooth.

[0012] Preferably, the output end of the circulation pump is connected to a water filter; a connector is threadedly connected to the reflux hole port, and the water filter is connected to the reflux hole through the cooperation of a hose and the connector; a filter element is detachably provided inside the reflux hole, and the filter element is used to further filter impurities in the water.

[0013] Preferably, the lower portion of the sealing cover is in an arc-shaped structure or a straight-line structure, and handles are fixedly connected to both ends of the upper portion.

[0014] Preferably, a plurality of evenly arranged support columns are fixedly provided on the surface of the water tank, and the upper parts of the support columns are of the same height.

[0015] Preferably, a thermal insulation layer is provided on the outer surface of the embedded pipe.

[0016] Preferably, the water tank presents a structure with one end higher and the other end lower along the length direction; a layer of fitting cushion film is provided on the upper surface of the water tank.

[0017] Preferably, a layer of outer edge bricks is arranged on the upper part of the rectangular brick body.

[0018] Beneficial effects of the present invention: 1) The present invention arranges a water body circulation system inside the container formed by the sealing cover and the rectangular brick body, so that the temperature of the sealing cover and the rectangular brick body is maintained at a constant temperature close to the temperature of the water body, and the flow path of the water circulation is used to ensure the air tightness between the sealing cover and the rectangular brick body. The internal circulation of the water body is used to maintain a state in which the total amount of air and water in the formed container remains unchanged, so that the formed precast concrete curing environment maintains a high relative humidity and a stable temperature. The thermodynamic principle is fully utilized, and the advantage of soil insulation is used to reduce its energy consumption. The curing of precast concrete can obtain a uniform and sufficient water vapor environment, which is conducive to the production of high-quality precast concrete parts with good structural performance.

[0019] 2) The circulating pump of the present invention can suck the water inside the water tank into the reflux hole inside the sealing cover, use the water quality filter to perform preliminary filtration on it, and then use the filter element inside the reflux hole to perform secondary filtration on the water body when it passes through. By filtering the water body twice, the water body can be kept in a relatively clean state, which is conducive to the formation of water film, the circulation of water body, and the fine maintenance of concrete.

[0020] 3) In the present invention, after the water flows from the first through hole into the second through hole, since the inner diameter of the second through hole is smaller than the inner diameter of the first through hole, the water flows through at a slower speed. After a period of time, the water will fill the cavity formed by the combination. At this time, a water seal is automatically formed between the sealing cover and the rectangular cavity, which can maintain the airtightness of the container formed between the sealing cover and the rectangular cavity, and can also maintain the temperature of the connection between the slot and the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a first cross-sectional view of the present invention; Figure 3 is a second cross-sectional view of the present invention; Figure 4 yes Figure 3 A partial enlarged view of the center Figure 5 is a third cross-sectional view of the present invention; Figure 6 yes Figure 5 A partial enlarged view of point B in the middle; Figure 7 yes Figure 5 A partial enlarged view of point C in the middle; Figure 8 It is a structural schematic diagram of the sealing cover in the present invention; Fig. 9 It is a schematic structural diagram of a rectangular brick body in the present invention.

[0023] In the figure: 1, rectangular brick body; 101, water tank; 102, support column; 103, cushion membrane; 104, outer edge brick body; 2, sealing cover; 201, arc cavity; 202, plug block; 203, first through hole; 204, return hole; 205, through groove; 3, slot; 301, second through hole; 302, vertical plate; 4, water outlet; 401, embedded pipe; 402, circulation pump; 403, joint; 404, filter element. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 2 as well as Fig. 9 As shown, a concrete precast curing and molding device comprises a rectangular brick body 1 piled in a soil pit, the upper part of which is slightly higher than the ground surface; a layer of outer edge brick body 104 is arranged on the upper part of the rectangular brick body 1 to keep the inside of the rectangular brick body 1 clean; Please refer again Figure 3 and Figure 5As shown, a water tank 101 is provided at the bottom of the rectangular brick body 1, into which a certain amount of water is passed, and the length and width of the water tank 101 are both greater than the length and width of the rectangular brick body 1, and the water tank 101 presents a structure with one end higher and the other end lower along the length direction; a plurality of evenly arranged support columns 102 are fixedly provided on the surface of the water tank 101, and the upper parts of the support columns 102 are of the same height, and are used to support a single or multiple stacked precast concrete molds, and support them inside the rectangular brick body 1; The waterproofing and water storage of the rectangular brick body 1 and the water tank 101 are both made using swimming pool construction technology. A constant temperature system is set inside the water tank 101. The constant temperature system is composed of a heating system, a cooling system and a temperature control system to control their operation. All of them are existing technologies and will not be elaborated here.

[0026] Please refer again Figure 2 and Figure 3 As shown, a layer of fitting cushion film 103 is provided on the upper surface of the water tank 101, and the cushion film 103 is used to facilitate the later cleaning of the silt inside the water tank 101; a water outlet 4 is opened at the bottom of the lower end of the water tank 101; the water outlet 4 is connected to a pre-buried pipe 401 with a folded structure, and the pre-buried pipe 401 is provided with an insulation layer on the surface and buried in the soil layer; the other end of the pre-buried pipe 401 is connected to a circulation pump 402, and the circulation pump 402 is protectively arranged in the soil layer, and the output end is connected to a water quality filter, and the output end of the water quality filter is connected to a hose (not shown in the figure).

[0027] A sewage discharge assembly is also provided at the bottom of the lower end of the water tank 101. The sewage discharge assembly is exactly the same as the water outlet 4 and the circulation pipe except for the position. A water pump is used to connect the circulation pipe, and the water inside the water tank 101 is discharged from here when it is replaced later.

[0028] Please refer again Figure 8 As shown, a detachable sealing cover 2 is provided on the upper part of the rectangular brick body 1. The cross section of the sealing cover 2 is an arc-shaped structure, and the lower part can be an arc-shaped structure or a straight-line structure. Both ends of the upper part are fixed with handles for lifting it with a hoist. Please refer again Figure 3-Figure 7 As shown, an arc-shaped cavity 201 is provided inside the sealing cover 2; a reflux hole 204 is provided at a position corresponding to the lower part of the arc-shaped cavity 201 in the middle of the sealing cover 2, and the end of the reflux hole 204 close to the circulation pump 402 penetrates to the outside of the sealing cover 2; a through groove 205 is provided at a position corresponding to the position between the reflux hole 204 and the arc-shaped cavity 201 in the sealing cover 2, and the through groove 205 is equal in length to the cavity, and the reflux hole 204 is connected to the arc-shaped cavity 201 through the through groove 205; a joint 403 is threadedly connected at the port of the reflux hole 204, and the joint 403 is connected to the circulation pump 402 and the water quality filter through a hose; A filter element 404 is detachably disposed inside the reflux hole 204 , and the filter element 404 is used to further filter impurities in the water body.

[0029] The sealing cover 2 with an arc-shaped cross section can make its middle portion have stronger stress resistance characteristics when it is hoisted, and the service life of the hollow sealing cover 2 with an arc-shaped cavity 201 can be greatly improved.

[0030] like Figure 4 and Figure 6 As shown, a rectangular plug-in block 202 is fixedly connected to the outer edge of the lower surface of the sealing cover 2; the plug-in block 202 is provided with uniformly arranged first through holes 203, which are communicated with the arc cavity 201; a slot 3 is provided at the top of the rectangular brick body 1 corresponding to the position of the plug-in block 202, the slot 3 does not fit with the plug-in block 202, and the slot 3 is slightly larger than the plug-in block 202; a vertical plate 302 is fixedly provided on the inner wall of the rectangular brick body 1; the rectangular brick body 1 is provided with a plurality of uniformly arranged second through holes 301 at the position corresponding to the slot 3, the second through holes 301 are communicated with the first through holes 203, and the inner diameter of the second through holes 301 is smaller than the inner diameter of the first through holes 203; After the water flows from the first through hole 203 to the inside of the slot 3, it continues to flow to the second through hole 301. At this time, the water heated by the constant temperature system heats the sealing cover 2 inside the first through hole 203 and the arc cavity 201 to keep it at the same temperature as the water. The inner wall of the rectangular brick body 1 is heated inside the second through hole 301 to keep it at the same temperature as the water, so that the upper part, side wall and bottom of the water are all at the same temperature as the water. like Figure 4 and Figure 6 As shown, the slot 3, the insert block 202 and the vertical plate 302 are combined to form a cavity, and the cross section of the cavity presents a U-shaped structure; When water flows from the first through hole 203 into the second through hole 301, since the inner diameter of the second through hole 301 is smaller than the inner diameter of the first through hole 203, the water flows slowly. After a period of time, the water fills the cavity formed by the combination. At this time, a water seal is automatically formed between the sealing cover 2 and the rectangular cavity, which can maintain the airtightness of the container formed between the sealing cover 2 and the rectangular cavity, and also maintain the temperature of the connection between the slot 3 and the plug 202, so that the container formed by the sealing cover 2 and the rectangular cavity tends to be in a constant temperature state as a whole.

[0031] like Figure 4 and Figure 6 As shown, the upper part of the vertical plate 302 is located in the middle of the slot 3; the upper end of the vertical plate 302 presents a smooth arc structure, and the surface of the vertical plate 302 is polished and smooth; When the water fills the cavity formed by the combination of the slot 3, the plug block 202 and the vertical plate 302, in order to avoid accelerating the flow speed of the water in the second through hole 301 and affecting the heat exchange between the water and the side wall of the rectangular brick body 1, the upper height of the vertical plate 302 is set to be lower than the upper part of the slot 3. At this time, the water can flow and overflow from the top of the vertical plate 302, solving the problem of its flow speed being accelerated in the second through hole 301; in addition, the overflowing water contacts the smooth side wall of the vertical plate 302 during the flow to the water tank 101 at the bottom, forming a water film. Through the effect of the water film, not only can the heat exchange effect between the water and the rectangular brick body 1 be further enhanced, and the overall constant temperature performance of the container formed between the sealing cover 2 and the rectangular cavity be maintained, but also the condensation of water droplets on the surface of the vertical plate 302 can be avoided, maintaining a good steam curing effect, and the curved top of the vertical plate 302 is more conducive to the formation of a water film.

[0032] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below: First, the workers stack the precast concrete together with the mold on the support column 102 inside the rectangular brick body 1, and use the support column 102 to separate it from the water inside the water tank 101. Then, they use a crane to cover the sealing cover 2 on the rectangular brick body 1 to make it initially sealed.

[0033] Then, the operator adds a filter element 404 into the reflux hole 204, and the water can be filtered twice when passing through it. The connector 403 is used to connect with the hose at the outer port of the reflux hole 204, and the filter element 404 is fixed inside the reflux hole 204. The circulation pump 402, the embedded pipe 401 and the water tank 101 are connected through the hose. The circulation pump 402 can suck the water in the water tank 101 into the reflux hole 204 inside the sealing cover 2, and in this process, it is preliminarily filtered by a water filter. By filtering the water twice, the water can be kept in a relatively clean state, which is conducive to the formation of a water film, the circulation of water, and the fine maintenance of concrete.

[0034] After that, the operator uses the constant temperature system to keep the water temperature inside the water tank 101 at about 20°C. Through the use of the circulation pump 402, after the water enters the reflux tank, it first fills the reflux tank, then overflows to the upper through groove 205, and then enters the arc groove, and fills the entire arc groove or forms a water film. While exchanging heat with the sealing cover 2, it also flows to each first through hole 203, and then continues to flow, so that the water body is continuously circulated through the following process: Water tank 101 → embedded pipe 401 → circulation pump 402 → water filter → hose → reflux hole 204 (filter element 404) → through groove 205 → arc cavity 201 → first through hole 203 → slot 3 → second through hole 301 (or side wall of vertical plate 302) → water tank 101.

[0035] It can be known that the water body presents an internal circulation flow process. The water body is heated by the constant temperature system. The water body exchanges heat with the sealing cover 2, the rectangular brick body 1, and the inner wall of the vertical plate 302 during the circulation process, which not only makes the container composed of the sealing cover 2 and the rectangular brick body 1 form a constant temperature (close to the water temperature) equilibrium state, but also makes the sealing cover 2 and the rectangular brick body 1 completely sealed. According to the principle of thermodynamics, at this time, the container composed of the sealing cover 2 and the rectangular brick body 1 is equivalent to placing it in a constant temperature environment, and after the internal water vapor circulates for a period of time, the relative humidity of the internal air The degree is close to 100%, and precast concrete has obtained a fine and excellent curing environment. In this environment, the generation of steam makes full use of the thermodynamic principles and reduces energy consumption with the help of the soil insulation advantage. Even large-scale and long-term precast concrete curing can fully meet its needs with lower energy loss. In addition, the condensation and evaporation of steam are in balance, so the inside of the formed container can no longer contain water vapor and is in a saturated state. Therefore, the curing of precast concrete can obtain a uniform and sufficient water vapor environment, which is conducive to the production of high-quality and structural precast concrete parts.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concrete precast part curing and molding device, characterized in that: It comprises a rectangular brick body (1); a water tank (101) is provided at the bottom of the rectangular brick body (1); a water outlet (4) is provided at the bottom of a lower end of the water tank (101); the water outlet (4) is connected to a pre-buried pipe (401) with a folded structure, and the other end of the pre-buried pipe (401) is connected to a circulation pump (402); A sealing cover (2) is arranged on the upper part of the rectangular brick body (1), and the cross section of the sealing cover (2) presents an arc-shaped structure; an arc-shaped cavity (201) is provided inside the sealing cover (2); a reflux hole (204) is provided at a position corresponding to the bottom of the arc-shaped cavity (201) in the middle of the sealing cover (2), and the reflux hole (204) is connected to the output end of the circulation pump (402); a through groove (205) is provided at a position corresponding to the reflux hole (204) and the arc-shaped cavity (201) in the sealing cover (2); A rectangular plug-in block (202) is fixedly connected to the outer edge of the lower surface of the sealing cover (2); the plug-in block (202) is provided with evenly distributed first through holes (203), the first through holes (203) being in communication with the arc-shaped cavity (201); a slot (3) is provided at a position corresponding to the plug-in block (202) on the top of the rectangular brick body (1), the slot (3) being slightly larger than the plug-in block (202); and a plurality of evenly distributed second through holes (301) are provided at a position corresponding to the slot (3) on the rectangular brick body (1).

2. A precast concrete part curing and molding device according to claim 1, characterized in that: The inner diameter of the second through hole (301) is smaller than the inner diameter of the first through hole (203); a vertical plate (302) is fixedly arranged on the inner wall of the rectangular brick body (1); the slot (3), the insert block (202) and the vertical plate (302) are combined to form a cavity, and the cross section of the cavity presents a U-shaped structure.

3. A precast concrete part curing and molding device according to claim 2, characterized in that: The upper portion of the vertical plate (302) is located in the middle of the slot (3).

4. A precast concrete part curing and molding device according to claim 2, characterized in that: The upper end of the vertical plate (302) presents a smooth arc-shaped structure, and the surface of the vertical plate (302) is polished smooth.

5. The precast concrete part curing and molding device according to claim 1, characterized in that: The output end of the circulation pump (402) is connected to a water filter; a connector (403) is threadedly connected to the port of the reflux hole (204); the water filter is connected to the reflux hole (204) through the cooperation of a hose and the connector (403); a filter element (404) is detachably provided inside the reflux hole (204); the filter element (404) is used to further filter impurities in the water body.

6. The precast concrete part curing and molding device according to claim 1, characterized in that: The lower part of the sealing cover (2) is an arc-shaped structure or a straight-line structure, and handles are fixedly connected to both ends of the upper part.

7. The precast concrete part curing and molding device according to claim 1, characterized in that: A plurality of evenly arranged support columns (102) are fixedly disposed on the surface of the water tank (101), and the upper parts of the support columns (102) have the same height.

8. The device for curing and forming a precast concrete part according to claim 1, characterized in that: The embedded pipe (401) is provided with a heat-insulating layer on its outer surface.

9. The device for curing and forming a precast concrete part according to claim 1, characterized in that: The water tank (101) presents a structure with one end being higher and the other end being lower along the length direction; a layer of fitted cushion film (103) is provided on the upper surface of the water tank (101).

10. The precast concrete part curing and molding device according to claim 1, characterized in that: A layer of outer edge bricks (104) is arranged on the upper part of the rectangular brick body (1).

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