A curing device for manufacturing of concrete precast piles

Abstract

The utility model relates to concrete precast pile technical field, specifically disclose a kind of curing equipment for concrete precast pile manufacturing, comprising: heat preservation pedestal, it is horizontal bearing structure, curing kiln body is placed in the heat preservation pedestal inside by supporting frame, wherein heat preservation pedestal support equipment whole and block bottom heat loss. The curing equipment for concrete precast pile manufacturing, by the structure design of sealing kiln door and the sealing connection of two openings of curing kiln body, cooperate heat preservation pedestal and heat preservation top cap butt joint place installation positioning pin lock relative position assembly, can avoid the gap produced due to sealing loose in junction, simultaneously, the supporting frame of rectangular frame structure is wrapped curing kiln body outer wall, and its outer wall and heat preservation pedestal, heat preservation top cap inner wall are closely abutted, can further strengthen the adhesion of heat insulation layer and kiln body, form multiple airtight structure, reduce the temperature and humidity leakage due to sealing strip aging, kiln temperature and humidity loss rate reduces.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete pile technology, specifically to a curing device used in the manufacture of precast concrete piles. Background Technology

[0002] In the field of precast concrete pile manufacturing, the curing process is the core link that determines the final strength, durability and crack resistance of the pile. The corresponding curing equipment is an indispensable supporting facility for the precast pile production line. Its technical solution has formed a well-known system in the industry. In terms of working principle, the equipment presets the curing curve through the control module and promotes the uniform diffusion of temperature and humidity in the cavity with the help of the air circulation module, ensuring that the precast pile completes the cement hydration reaction in a closed environment, and finally achieves the design compressive strength and flexural strength to meet the factory standards.

[0003] In the long-term operation of existing precast concrete pile curing equipment, the connection between the kiln door and the kiln body of the steam curing kiln is mostly made of a single rubber sealing strip. This strip is prone to aging and cracking due to long-term erosion by high-temperature steam, resulting in rapid loss of temperature and humidity inside the kiln. This not only increases energy consumption, but also, since the joint is not properly sealed, condensate can easily seep in at low temperatures, damaging the wall structure and further aggravating the temperature and humidity fluctuations inside the cavity. In addition, most curing equipment has steam pipes that are only arranged in one direction along the side wall of the kiln body, and the airflow circulation fan is installed at the top, resulting in the temperature in the lower part of the kiln being lower than that in the upper part, and the humidity in the area near the pipes being higher than that in the area away from the pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a curing device for the manufacture of precast concrete piles, in order to solve the problems mentioned in the background art, where the kiln door and kiln body of the steam curing kiln are mostly connected by a single rubber sealing strip, which is prone to aging and cracking due to long-term erosion by high-temperature steam, resulting in rapid loss of temperature and humidity inside the kiln. This not only increases energy consumption, but also, since the joint is not sealed, condensate can easily seep in at low temperatures, damaging the wall structure and further aggravating the temperature and humidity fluctuations inside the cavity. In addition, most curing devices have steam pipes that are only arranged unidirectionally along the side wall of the kiln body, and the airflow circulation fan is installed at the top.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a curing device for the manufacture of precast concrete piles, including an insulated base, which is a horizontal load-bearing structure. The curing kiln is installed inside the insulated base through a support frame, wherein the insulated base supports the entire device and blocks heat loss from the bottom. The upper end of the insulation base is connected to the insulation top cover, and the insulation base and the insulation top cover are wrapped around the outside of the curing kiln. The outer wall of the curing kiln is provided with a support frame, and the outer wall of the support frame abuts against the inner wall of the insulation base and the insulation top cover. The curing kiln has a positioning slide rail arranged parallel to the inner wall, and a pile bearing platform is slidably connected to the surface of the positioning slide rail. Steam pipes are installed at equal intervals along the length of the curing kiln, and the steam output end of the steam pipe passes through the positioning slide rail and faces the inside of the curing kiln. The two openings of the curing kiln are respectively sealed and connected to the sealing kiln door and the airflow docking plate. Circulating fans are evenly installed inside the airflow docking plate, and the air outlet direction of the circulating fans faces the inside of the curing kiln.

[0006] By adopting the above technical solution, a stable and sealed curing space is formed through the enclosed structure of the heat-insulating base, heat-insulating top cover and curing kiln body, combined with the abutment positioning of the support frame, thereby reducing the loss of temperature and humidity.

[0007] Preferably, a positioning pin is installed at the contact point between the insulation base and the insulation top cover, and the insulation base and the insulation top cover are penetrated by a steam pipe inlet pipe.

[0008] Using the above technical solution, the positioning pin at the joint between the insulation base and the top cover can lock their relative positions, preventing loosening of the joint and the formation of sealing gaps.

[0009] Preferably, the support frame is a rectangular frame structure, and the support frame is wrapped around the outer wall of the curing kiln.

[0010] Using the above technical solution, the rectangular frame structure wraps around the outer wall of the kiln, which can provide comprehensive support for the curing kiln and prevent the kiln from deforming due to its own weight or temperature changes.

[0011] Preferably, the steam pipe is a tee pipe, and the two branches of the steam pipe pass through the upper and lower sections of the inner wall of the curing kiln, respectively, and the air inlet pipe of the steam pipe is connected to the main pipe.

[0012] Using the above technical solution, the three-way steam pipe allows steam to be supplied bidirectionally from the top and bottom of the kiln body, and in conjunction with the output end of the through-positioning slide rail, multi-dimensional steam supply is achieved.

[0013] Preferably, each of the steam pipes is equipped with an electromagnetic regulating valve, and the electromagnetic regulating valve is connected to the steam pipe flange.

[0014] Using the above technical solution, the electromagnetic regulating valve on each steam pipe can independently control the steam supply of the corresponding area, accurately regulate the temperature and humidity at different locations in the kiln, and avoid local temperature and humidity deviations.

[0015] Preferably, the connecting main pipe is arranged along the length of the insulation base, and the connecting main pipe abuts against the surfaces of the insulation base and the insulation top cover.

[0016] By adopting the above technical solution, the connecting main pipe is set along the length of the insulation base, which can be precisely connected with the steam pipes installed at equal intervals to ensure that the steam supply pressure of each steam pipe is consistent.

[0017] Preferably, the sealing kiln door and the airflow docking plate are arranged in parallel, and the sealing kiln door and the airflow docking plate respectively abut against the inner wall surface of the heat preservation base.

[0018] By adopting the above technical solution, the sealed kiln door and the airflow docking plate are set in parallel, so that the airflow inside the kiln can circulate in a straight line, thereby improving the airflow efficiency.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the curing equipment used in the manufacture of precast concrete piles: 1. The structural design of sealing the kiln door and curing kiln body through two openings, combined with the installation of positioning pins at the joint of the insulation base and the insulation top cover to lock the relative positions, can avoid gaps caused by loose seals at the joint. At the same time, the rectangular frame structure of the support frame wraps around the outer wall of the curing kiln, and its outer wall is in close contact with the inner wall of the insulation base and the insulation top cover, which can further enhance the fit between the insulation layer and the kiln body, forming a multi-layer sealed structure, reducing the leakage of temperature and humidity due to the aging of the sealing strip, reducing the loss rate of temperature and humidity in the kiln, thereby reducing the amount of steam replenishment, reducing the energy consumption of equipment operation, and maintaining a long-term stable sealed environment in the curing space. 2. The structure of the insulation base and insulation top cover completely wrapping the outer side of the kiln body, combined with the design of the support frame as the intermediate support layer against the inner wall of the insulation layer and the outer wall of the kiln body, can eliminate the splicing gap between the insulation layer and the kiln body. The rectangular frame structure of the support frame can form a rigid support for the splicing part of the insulation base and insulation top cover, avoiding gaps caused by loosening at the splicing point. At the same time, the overall wrapping structure of the insulation layer can block the contact between the external low temperature air and the high temperature steam inside the kiln at the splicing point, reducing the generation of condensate. 3. A structure with a steam pipe consisting of a three-way valve and two branch pipes running through the upper and lower sections of the inner wall of the curing kiln, and the output end running through a positioning slide rail towards the inside of the kiln, and equidistantly installed along the length of the kiln, enables multi-dimensional steam supply. Combined with the circulating fan's outlet direction facing the inside of the curing kiln, it drives the airflow within the kiln along the fan outlet, achieving multi-dimensional steam diffusion and circulation throughout the entire cavity. This structure allows steam to quickly and evenly cover all parts of the precast pile within the kiln, while eliminating temperature and humidity differences between upper and lower areas and between the inside and outside of the pile, promoting uniform cement hydration reaction, and ultimately improving the strength uniformity and durability of the precast concrete pile. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the installation position of the curing kiln body and the connecting main pipe of this utility model; Figure 3 This is a three-dimensional structural diagram of the installation of the heat-insulating base and the curing kiln body of this utility model; Figure 4 This is a schematic diagram of the overall internal side section of the present invention. Figure 5 This is a schematic diagram of the overall internal three-dimensional structure of this utility model; Figure 6 This is a top-down three-dimensional structural diagram of the overall internal structure of this utility model.

[0021] In the diagram: 1. Insulation base; 2. Insulation top cover; 3. Support frame; 4. Curing kiln body; 5. Positioning slide rail; 6. Pile bearing platform; 7. Steam pipe; 8. Connecting main pipe; 9. Positioning pin; 10. Sealing kiln door; 11. Airflow connection plate; 12. Circulating fan. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6 This utility model provides a technical solution: a curing device for the manufacture of precast concrete piles, including an insulation base 1, an insulation top cover 2, a support frame 3, a curing kiln body 4, a positioning slide rail 5, a pile body bearing platform 6, a steam pipe 7, a connecting main pipe 8, a positioning pin 9, a sealing kiln door 10, an airflow docking plate 11, and a circulating fan 12. Among them, the heat insulation base 1 is a horizontal load-bearing structure. The curing kiln 4 is placed inside the heat insulation base 1 through the support frame 3. The heat insulation base 1 supports the entire equipment and blocks the heat loss from the bottom. A positioning pin 9 is installed at the joint between the heat insulation base 1 and the heat insulation top cover 2. The heat insulation base 1 and the heat insulation top cover 2 are penetrated by the steam pipe 7 air inlet pipe. The heat insulation top cover 2 is installed at the upper end of the heat insulation base 1. The heat insulation base 1 and the heat insulation top cover 2 are wrapped around the outside of the curing kiln body 4. A support frame 3 is provided on the outer wall of the curing kiln body 4. The outer wall of the support frame 3 is in contact with the inner wall of the heat insulation base 1 and the heat insulation top cover 2. The support frame 3 is a rectangular frame structure and is wrapped around the outer wall of the curing kiln body 4. Referring to the attached diagrams in the instruction manual Figures 1-6As shown, first, fix the horizontally supported insulation base 1 on a flat ground. Then, place the rectangular frame support frame 3 inside the insulation base 1, ensuring that the support frame 3 fits against the inner wall of the insulation base 1. Next, hoist the curing kiln 4 to the inside of the support frame 3, so that the outer wall of the curing kiln 4 abuts against the inner wall of the support frame 3, completing the support and positioning of the curing kiln 4. Cover the top of the insulation base 1 with the insulation top cover 2, align the mating surfaces of the two, and insert the positioning pin 9 to lock the relative positions, so that the insulation base 1 and the insulation top cover 2 tightly wrap around the outside of the curing kiln 4, and the outer wall of the support frame 3 abuts against the inner wall of the insulation base 1 and the insulation top cover 2, forming a preliminary sealed structure. Positioning slide rails 5 are welded parallel to the inner wall of the curing kiln body 4. The pile bearing platform 6 is slid into the positioning slide rails 5 to ensure smooth sliding. Then, multiple steam pipes 7 with a three-way structure are installed at equal intervals along the length of the curing kiln body 4, so that the two branches of the steam pipes 7 pass through the upper and lower parts of the inner wall of the curing kiln body 4 respectively. The steam supply output end passes through the positioning slide rails 5 and faces the inside of the kiln body. Each steam pipe 7 is flanged and connected to an electromagnetic regulating valve. A connecting main pipe 8 is laid along the length of the insulation base 1 to connect the connecting main pipe 8 with the air inlet pipes of all steam pipes 7. Finally, the sealing kiln door 10 and the airflow docking plate 11 are installed at the two openings of the curing kiln body 4 to ensure a tight seal. Then, the circulating fan 12 is evenly fixed in the airflow docking plate 11 to complete the overall assembly of the equipment. A positioning slide rail 5 is installed parallel to the inner wall of the curing kiln body 4, and a pile bearing platform 6 is slidably connected to the surface of the positioning slide rail 5. Steam pipes 7 are installed equidistantly along the length of the curing kiln body 4, and the steam output end of the steam pipe 7 passes through the positioning slide rail 5 and faces into the curing kiln body 4. Each steam pipe 7 is equipped with an electromagnetic regulating valve, and the electromagnetic regulating valve is connected to the flange of the steam pipe 7. The steam pipe 7 is a tee pipe, and the two branch pipes of the steam pipe 7 pass through the upper and lower sections of the inner wall of the curing kiln body 4, respectively. The air inlet pipe of the steam pipe 7 is connected to the... The main pipe 8 is connected and is set along the length of the insulation base 1. The main pipe 8 abuts against the surface of the insulation base 1 and the insulation top cover 2. The two openings of the curing kiln body 4 are respectively sealed and connected to the sealing kiln door 10 and the airflow docking plate 11. The airflow docking plate 11 is evenly installed with circulating fans 12, and the air outlet direction of the circulating fans 12 is towards the inside of the curing kiln body 4. The sealing kiln door 10 and the airflow docking plate 11 are set in parallel and abut against the inner wall surface of the insulation base 1. Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, the precast concrete pile to be cured is placed on the pile support platform 6, and the pile support platform 6 is pushed to slide along the positioning slide rail 5 to send the precast pile into the curing kiln 4. After the precast pile is in place, the positioning pin 9 is inserted to lock the position of the pile support platform 6 on the positioning slide rail 5 to prevent displacement during the curing process. Close the sealed kiln door 10 to ensure that the curing kiln body 4 forms a completely sealed space; start the external steam source, and the steam is distributed to each steam pipe 7 through the connecting main pipe 8. By adjusting the electromagnetic regulating valve on the steam pipe 7, the steam supply in different areas is controlled, so that the steam is sprayed out from the top, bottom and around the pile body of the kiln body, and the temperature and humidity inside the kiln are rapidly increased. Start the circulating fan 12 inside the airflow docking plate 11, so that the air outlet of the circulating fan 12 is directed towards the inside of the curing kiln 4, driving the airflow circulation inside the kiln. Combined with the multi-dimensional steam supply from the steam pipe 7, the steam is evenly diffused inside the kiln, maintaining a stable temperature and humidity environment and promoting the cement hydration reaction of the precast pile. After the curing time is over, first turn off the steam source and the circulating fan 12, open the sealed kiln door 10, pull out the positioning pin 9, slide the pile support platform 6 along the positioning slide rail 5, and take out the cured precast pile to complete the single curing process.

[0024] Working principle: When using this curing equipment for the manufacture of precast concrete piles, the curing kiln body 4 is placed on the horizontally supported insulation base 1 through the support frame 3 of the rectangular frame structure to achieve support and positioning. Then, the insulation top cover 2 is connected to the insulation base 1, and the relative positions are locked by the positioning pin 9 at the abutment point, so that the insulation base 1 and the insulation top cover 2 tightly wrap the outside of the curing kiln body 4, and the outer wall of the support frame 3 abuts against the inner wall of the insulation base 1 and the insulation top cover 2, forming a sealed curing space and reducing the loss of temperature and humidity. The precast concrete pile is placed on the pile support platform 6, and the pile support platform 6 is pushed to slide along the positioning slide rail 5, which is set parallel to the inner wall of the curing kiln 4, to send the precast pile into the curing kiln 4. After the precast pile is in place, the position of the pile support platform 6 on the positioning slide rail 5 is locked with the positioning pin 9 to prevent the pile from shifting during the curing process. The external steam source delivers steam through the connecting main pipe 8 arranged along the length of the insulation base 1. The connecting main pipe 8 is connected to multiple steam pipes 7. The steam pipes 7 are tee pipes, with two branch pipes passing through the upper and lower parts of the inner wall of the curing kiln 4, respectively. Each steam pipe 7 is connected to an electromagnetic regulating valve through a flange, which can independently adjust the steam supply of each area and accurately control the temperature and humidity of different areas in the kiln. At the same time, the steam pipe 7 supplies steam through the positioning slide rail 5 and faces the inside of the curing kiln 4, directly supplying steam to the pile bearing platform 6 and the area around the precast pile, quickly raising and maintaining the temperature and humidity inside the kiln. The two openings of the curing kiln 4 are sealed by the sealing kiln door 10 and the airflow docking plate 11. The circulating fan 12 inside the airflow docking plate 11 is started, and its air outlet direction is facing the inside of the curing kiln 4 to drive the airflow circulation. Combined with the multi-dimensional steam supply layout of the steam pipe 7, the circulating fan 12 and the airflow docking plate 11 work together to make the steam spread quickly and evenly in the curing kiln 4, ensuring that all parts of the precast pile are in a stable and consistent temperature and humidity environment, promoting the uniform cement hydration reaction, and increasing the overall practicality.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A curing device for the manufacture of precast concrete piles, comprising: The heat-insulating base (1) is a horizontal load-bearing structure. The heat-insulating base (1) is equipped with a curing kiln body (4) through a support frame (3). The heat-insulating base (1) supports the entire equipment and prevents heat loss from the bottom. The feature is that: the upper end of the heat-insulating base (1) is connected to the heat-insulating top cover (2), and the heat-insulating base (1) and the heat-insulating top cover (2) are wrapped around the outside of the curing kiln body (4). The outer wall of the curing kiln body (4) is provided with a support frame (3), and the outer wall of the support frame (3) abuts against the inner wall of the heat-insulating base (1) and the heat-insulating top cover (2); The inner wall of the curing kiln (4) is provided with a positioning slide rail (5) parallel to the inner wall, and a pile bearing platform (6) is slidably connected to the surface of the positioning slide rail (5). Steam pipes (7) are installed at equal intervals along the length direction inside the curing kiln (4), and the steam output end of the steam pipe (7) passes through the positioning slide rail (5) and faces the inside of the curing kiln (4). The two openings of the curing kiln (4) are respectively sealed and connected to the sealing kiln door (10) and the airflow docking plate (11). A circulating fan (12) is evenly installed inside the airflow docking plate (11), and the air outlet direction of the circulating fan (12) faces the inside of the curing kiln (4).

2. The curing equipment for precast concrete pile manufacturing according to claim 1, characterized in that: A positioning pin (9) is installed at the contact point between the heat-insulating base (1) and the heat-insulating top cover (2), and the heat-insulating base (1) and the heat-insulating top cover (2) are penetrated by the steam pipe (7) air inlet pipe.

3. The curing equipment for precast concrete pile manufacturing according to claim 1, characterized in that: The support frame (3) is a rectangular frame structure, and the support frame (3) is wrapped around the outer wall of the curing kiln body (4).

4. The curing equipment for precast concrete pile manufacturing according to claim 1, characterized in that: The steam pipe (7) is a three-way pipe, and the two branches of the steam pipe (7) pass through the upper and lower sections of the inner wall of the curing kiln (4) respectively, and the air inlet pipe of the steam pipe (7) is connected to the connecting main pipe (8).

5. A curing device for the manufacture of precast concrete piles according to claim 1, characterized in that: Each of the steam pipes (7) is equipped with an electromagnetic regulating valve, and the electromagnetic regulating valve is connected to the flange of the steam pipe (7).

6. A curing device for the manufacture of precast concrete piles according to claim 4, characterized in that: The connecting main pipe (8) is arranged along the length of the insulation base (1), and the connecting main pipe (8) abuts against the surfaces of the insulation base (1) and the insulation top cover (2).

7. A curing device for the manufacture of precast concrete piles according to claim 1, characterized in that: The sealed kiln door (10) and the airflow docking plate (11) are arranged in parallel, and the sealed kiln door (10) and the airflow docking plate (11) respectively abut against the inner wall surface of the heat insulation base (1).

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