JP3161926U - Concrete curing equipment - Google Patents

Abstract

[PROBLEMS] To heat and humidify a heat source by a hot water production apparatus and a heating apparatus in a manufacturing process of a secondary concrete product, quickly reach an optimal temperature and humidity in a curing chamber, and perform curing while adjusting them. Provide a concrete curing device that can be used. A concrete curing device comprises a floor, a ceiling and a side wall with a heat insulating material as a curing room, and at least one side of the side wall is an openable and closable opening for carrying in a secondary concrete product. Heating / humidifying means by supporting a pipe connected to a hot water production apparatus arranged at a position close to the chamber, and arranging an appropriate number of spray nozzles for ejecting hot water having a diameter of 10 μm to 1000 μm at predetermined intervals. In addition, air heating means connected to the hot water production apparatus is provided on the inside of the curing room, and control means for controlling the heating and humidifying means and the air heating means is provided. [Selection] Figure 1

Description

  The present invention relates to a concrete curing device. More specifically, for example, in the curing of concrete in the manufacturing process of concrete secondary products such as side grooves and concrete blocks, by appropriately controlling heating and humidification curing with hot water using a power source and heating curing with an air heating device. Compared to conventional steam curing with heavy oil etc. or heating curing with electric heater etc., fuel cost can be saved significantly, and moderate temperature and humidity can always be given to concrete. The present invention relates to a concrete curing device capable of improving the working environment, the surrounding environment, and the optimization of concrete curing.

  In the production of concrete secondary products such as side grooves and concrete blocks, concrete is poured into a mold, then cured for a certain period of time, and then die-cut when it has been cured to some extent. During the curing, as a means for stabilizing and accelerating the concrete hardening, a synthetic resin sheet is covered so as to wrap the concrete-containing formwork, and steam is sent into the sheet. As another means, a large steam curing room is constructed, a formwork in which concrete is poured into the steam curing room is carried, and curing is similarly performed while warming the concrete with steam.

  FIG. 7 shows a schematic diagram of a specific example showing conventional concrete curing. The concrete curing store A in the upper left of the figure shows the end portion of the pipe C connected to the high pressure heavy oil boiler B using heavy oil as fuel for the concrete secondary product W carried into the curing store A. A high-pressure steam having a large particle diameter, which is inserted into A and manufactured with a high-pressure heavy oil boiler B, is directly discharged into the curing chamber A. The high-pressure steam is discharged from one end of the side wall toward the opposite side, so that the entire inside of the curing chamber A is appropriately maintained at temperature and humidity. Therefore, it is necessary to always discharge a large amount of high-pressure steam.

  On the other hand, in the case of curing the concrete secondary product W in the lower left of FIG. 7, the concrete secondary product W is entirely covered with the curing sheet D, and the high-pressure heavy oil boiler is placed in the space in the curing sheet D as described above. The tip end of the pipe E connected to B is inserted into the curing sheet D, and high-pressure steam having a large particle size is discharged into the curing sheet D. In this case, since the concrete secondary product W is surrounded by only the thin curing sheet D, the heat loss from the curing sheet D is extremely large. In contrast, it was necessary to constantly discharge a large amount of high-pressure steam.

  Furthermore, in the curing stage of the concrete secondary product W, it is necessary to coat the curing sheet D so that there is no gap each time, and it takes time and money to work.

  On the other hand, as means for promoting curing of secondary concrete products, means for curing only by heating with hot air curing means or electric heating curing means, etc. are known, but these can obtain moderate humidity. could not.

  None of the above-described means is a technique using the interaction between heating and humidification for obtaining an optimum indoor environment as a curing means for obtaining a high-quality concrete secondary product in the curing room.

JP 2003-291119 A

The conventional curing means has the following problems.
In the method of using the curing sheet, it is necessary to wrap the secondary concrete product individually or in a packed state so that there is no gap with the curing sheet each time, but it is difficult to completely wrap the whole even if time and expense are spent In many cases, there is a gap in the curing sheet, or steam or air given moisture by steam is removed from the thin curing sheet. As a result, it is necessary to continuously feed steam during curing. Therefore, a large amount of steam is not used effectively, which causes high operation and maintenance costs. In addition, since steam with a large particle diameter is constantly sent, a large amount of dew condensation water is generated in the curing sheet, and the curing sheet is soaked with water and oil and becomes dirty during work, The work environment was not good.

  Further, in the means using the steam curing room, a large capital investment is required to create the steam curing room. Furthermore, the steam curing room uses a large amount of heavy oil to generate high-pressure steam, and the fuel price has become expensive due to the recent increase in oil prices.

  Furthermore, in the single heating means such as hot air curing means or electric heating curing means, all are only means for adjusting the temperature level in the curing room, not for obtaining both optimum temperature and humidity. It was. In addition, it is a heavy oil boiler that obtains the heat source that becomes the hot air, which increases fuel costs and adversely affects the global environment.

  The present invention solves the above-mentioned problems, and in concrete curing in the production process of concrete secondary products such as side grooves and concrete blocks, heating and humidification are carried out with a heat source from a hot water production device, so that the optimum temperature and humidity can be quickly achieved. An object of the present invention is to provide a concrete curing device that can be reached and cured while adjusting them. It is another object of the present invention to provide an easy-to-use concrete curing device that is extremely inexpensive in capital investment and is not so limited by the size and shape of the formwork of a concrete secondary product.

  In order to solve the above-mentioned problems, the present invention provides a concrete curing apparatus for producing a concrete secondary product, wherein a curing room is constituted by a heat insulating material on the floor, ceiling and side walls, and at least one side of the side walls is provided with the secondary concrete product. An opening that can be opened and closed for carrying in, and a pipe connected to a hot water production apparatus disposed near the curing chamber is supported on the inner side of the side wall, and hot water having a diameter of 10 μm to 1000 μm is jetted into the pipe An appropriate number of spray nozzles are arranged at predetermined intervals to form a heating and humidifying unit, and an air heating unit connected to the hot water production apparatus is provided inside the curing chamber, and the heating and humidifying unit and the air heating unit are provided. It features a concrete curing device provided with a control means for controlling.

  Further, in a concrete curing device in the production of secondary concrete products, a ceiling and side walls are configured with a heat-insulating material that can be assembled, and the side walls are connected to columns and horizontal members assembled by a single pipe, and the horizontal members. Hot water production that is composed of a heat insulating panel that can be hooked by a hook on the back surface, and that has a through-hole for entering and exiting the spray nozzle on the side wall, which is disposed at a position close to the curing chamber. A pipe connected to the apparatus is inserted, and from the pipe, an appropriate number of spray nozzles for ejecting hot water having a diameter of 10 μm to 1000 μm are arranged at predetermined intervals to form a heating and humidifying means, and the hot water is produced inside the side wall. It is characterized by a concrete curing device provided with air heating means connected to the apparatus and provided with control means for controlling the heating and humidifying means and the air heating means.

  Further, the present invention is characterized by a concrete curing device in which the hot water production device is a heat pump hot water production device.

  Further, the present invention is characterized by a concrete curing device in which air heating means is provided on the inside of the ceiling and / or the inside of the side wall.

  Furthermore, in the concrete curing device, a hot water receiving tank for collecting hot water discharged from the curing room, a cleaning device connected to the hot water receiving tank through a pipe, and a recovery tank for recovering the hot water used in the cleaning device are formed, The concrete curing apparatus is characterized in that the hot water is separated into water and aggregate in the recovery tank and reused.

  The present invention obtains warm water from a hot water production apparatus using a power source obtained from a household or factory power outlet close to the concrete curing room, and sprays hot water from a pipe connected to the hot water production apparatus as fine particles in the curing room. Optimum for concrete secondary products by appropriately adjusting both of them by providing heating and humidifying means for heating and air heating means for radiating hot water or heat obtained by the hot water production apparatus using the electricity as a heat source to the curing chamber A curing device that can achieve a high temperature and humidity can be configured, and furthermore, the fuel cost can be reduced to approximately 20% compared to the fuel cost of conventional heavy oil, greatly reducing the curing cost. It became possible to obtain a device to do.

  In addition, because the heat source of the heating and humidifying means is electricity, there is no possibility that exhaust gas generated when using conventional heavy oil as fuel is released into the atmosphere at all. Since it operates using atmospheric heat, a very good device for the global environment has become possible.

  Furthermore, since a curing space having a good sealing degree can be formed simply by placing a secondary concrete product in a curing chamber having a simple structure, appropriately heated fine particles sprayed in the space and circulated. This makes it possible to maintain an indoor environment with the optimum temperature and humidity for curing the curing room with warm water and heat.

  In addition, since the particles to be sprayed are sprayed with hot water of fine particles, they will drift in the space, become large particle size and can be heated and humidified without adhering to the concrete secondary product, In addition, the heated indoor air can be efficiently heated by circulating hot water or other heating means as another means, and by adjusting both of them in consideration of various conditions, the indoor environment can be adjusted to the optimum temperature. A device that can reach the humidity early is now possible.

  Furthermore, in the invention of claim 2, since the assembly is easy, the product can be moved without moving the crane or the worker, as in the case of a large concrete secondary product. Since the curing room can be formed so as to surround it, an apparatus capable of greatly reducing the cost for curing can be realized.

  Moreover, although the spray-like warm water used for curing in the concrete curing room falls, in the configuration of the invention of claim 5, it can be collected at a predetermined position by the inclination of the floor surface, and a certain amount of time has passed. However, it is possible to maintain the heat-retaining state and use it as a means for cleaning the mold from which the hot water has been removed, so that the deposits on the mold can be easily removed. Furthermore, the warm water used for the above washing contains aggregates such as cement, sand, and gravel that have adhered to the mold, but by removing the aggregates from them, they are discharged as contaminated water. In addition, the separated aggregate and water can be reused as necessary.

The schematic perspective view which shows the Example of the concrete curing apparatus of this invention. Schematic which shows the Example of the concrete curing apparatus of this invention. The schematic perspective view which shows the other Example of the concrete curing apparatus of this invention. (A) The schematic sectional drawing which shows the other Example of the concrete curing apparatus of this invention, (b) The schematic sectional drawing which shows the other Example. Schematic which shows the Example of the whole concrete curing apparatus of this invention. The schematic perspective view which shows the other Example of the concrete curing apparatus of this invention. Schematic perspective view showing conventional concrete curing means

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

  FIG. 1 is a schematic perspective view of a concrete curing device in the production of a concrete secondary product according to the present invention. The concrete curing room 1 includes a floor 2, a ceiling 3, and a side wall 4. At least one surface of the side wall 4 forms an openable / closable opening 5 for carrying in the secondary concrete product W. Two surfaces of the side wall 4 may be the opening 5, and one may be a carry-in entrance and the other may be a carry-out portion. The opening 5 is configured so that it can be closed in a sealed state after the concrete secondary product W is loaded. The materials for closing the floor 2, the ceiling 3, the side walls 4 and the openings 5 are configured so that the temperature and humidity in the curing chamber can be maintained using heat insulating materials.

  A pipe 7 provided with a hot water spray nozzle 6 is fixed to the ceiling 3 or the side wall 4, and the pipe 7 is connected to a hot water production apparatus 8 such as a heat pump unit installed outside the curing chamber 1.

  The hot water production apparatus 8 feeds the supplied water to the pipe 7 as hot water of 60 ° C. or higher in order to keep the atmospheric temperature suitable for the curing chamber 1 at 60 ° C. to 75 ° C. The warm water fed is sprayed into the curing chamber 1 as a mist from the connected warm water spray nozzle 6.

  In addition, the installation number and installation position of the piping 7 and the shape and number of the hot water spray nozzles 6 are appropriately determined as necessary. In addition, by providing the hot water pressure increasing pump 9 in the pipe 7, the particle size and amount of the sprayed mist can be adjusted to achieve optimum curing conditions.

  For example, the pipe 7 is provided with a hot water spray nozzle 6 every 2 m to 6 m, and the hot water spray nozzle 6 is configured to spray hot water having a particle diameter of 10 μm to 1000 μm into the space in the curing chamber 1. Yes.

  In addition, the ceiling 3 or the side wall 4 in the curing chamber 1 is provided with a heating device 10 that raises the temperature in the curing chamber 1 at a position that does not interfere with the hot water spray nozzle 6 or the pipe 7. In addition, the attachment position of this heating apparatus 10 can be adjusted with the capacity | capacitance of this curing room 1, and the shape of the concrete secondary product W, and it can be set as optimal curing conditions.

  By adjusting the outputs of the hot water production apparatus 8 and the heating apparatus 10, the curing chamber 1 can be maintained at a temperature suitable for concrete curing at 60 ° C to 75 ° C and a relative humidity of 70% to 97%. .

  FIG. 2 shows an embodiment in which a panel radiator 11 is used in the curing room 1 as the heating device 10, and hot water circulates in the panel radiator 11 from the hot water outlet pipe 12 and returns to the hot water tank 14 by the hot water return pipe 13. It is. The warm water in the warm water tank 14 is returned again to the warm water production apparatus 8 by the circulation pump and heated, and is again supplied to the panel radiator 11 in the curing chamber 1 by the warm water discharge pipe 12.

  FIG. 3 shows that a temperature / humidity sensor 15 is installed in the room of the concrete curing device, and an output signal of the temperature / humidity sensor 15 is compared with a set value programmed in the automatic control device 16 by using an automatic control device 16. By controlling, the outputs of the hot water production device 8 and the heating device 10 are controlled, and the temperature and humidity suitable for the concrete curing can be automatically maintained. Further, by controlling the hot water production apparatus 8 and the heating apparatus 10 simultaneously or alternately, it is possible to control the program with good followability.

  FIG. 4A shows the heat curing device 8 of the concrete curing device of Examples 1 to 3 described above as a heat pump hot water production device 17, which enables high-efficiency hot water production with a heat pump and lower curing costs. It is a concrete curing device.

FIG. 4 (b) shows a concrete curing device using the heat pump type hot water production device 17, in which the heating device 10 is an electric heater 18, which is compared with a conventional concrete curing method using high-temperature steam produced by a heavy oil boiler or the like. The concrete curing device further reduces the emission of carbon dioxide.
In addition, the heating apparatus 10 is good also as a heat radiator which supplies or circulates the steam using a factory waste heat, and warm water, for example.

In the above Examples 1 to 5, for example, in the case of a concrete curing room having a volume of about 500 m ^{3 with} a height of 5 m, a width of 5 m and a depth of 20 m, the amount of hot water is 700 L as pressurized water at a water pressure of about 0.5 MPa to 2 MPa. It is possible to achieve curing of the secondary concrete product W such as a gutter or a concrete block by spraying for 5 to 6 hours / hour to 1500 L / hour. Moreover, the environment in the curing room can be controlled to an optimum value by heat obtained from an air heating device as another heat supply means as necessary or as an auxiliary means. The amount of warm water, its spraying time and the heat obtained from the heat source will differ depending on factors such as the season or factors such as the type and size of the concrete secondary product W and the thickness of the concrete. This makes it possible to maintain an efficient curing room space with temperature and humidity.

  In the conventional steam curing room of the same scale, heavy oil is used as a high-pressure heavy oil boiler, but about 20 million is used as a heavy oil price for curing means to produce secondary products of about 35,000 tons per year. Yen / year was required, but due to the recent rise in fuel oil, further expenses are required. However, the concrete curing room using both the heating and humidifying means and the heating means of the present invention has an electricity cost of about 4 million yen to 6 million yen / year, and can reduce the cost to about 1/5. It was.

  Further, since the floor surface in the curing chamber 1 is provided with an inclined gradient, the sprayed hot water falls on the floor surface and flows out in a predetermined direction. In FIG. 1, the inclination which inclines in the opening part 5 side is provided, and the drainage side groove | channel 19 is provided. As shown in FIG. 5, the hot water flowing out into the drain receiving side groove 19 is temporarily accumulated in the hot water receiving tank 20. The hot water tank 20 can be prevented from decreasing in temperature by being made of a heat insulating material. The hot water maintained at the predetermined temperature is cleaned by the cleaning device 21 immediately or under the condition that the temperature does not decrease, the mold Y removed from the concrete secondary product W.

  As the cleaning device 21, the mold Y is cleaned by the pipe 22 from the hot water receiving tank 20, the cleaning device 23 at the tip thereof, and the compressor 24 that applies pressure to the cleaning device 23. The hot water mixed with the cement and aggregate after the cleaning is introduced into the recovery tank 25. In the collection tank 25, cement, aggregates and the like are deposited at the bottom, and the aggregates and the like are collected and collected in one direction by a collecting means 26 such as a spiral.

  The hot water from which the aggregate has been separated in the collection tank 25 can be discharged or reused as a supply means to the hot water production apparatuses 8 and 17.

  The compressor 24 can also serve as a delivery means used for discharging from the hot water production apparatuses 8 and 17 to the pipe 7 and the hot water forward pipe 12.

  The curing chamber A of FIG. 7 shown in the above conventional example is manufactured as a steam curing chamber using heavy oil as fuel, but the curing chamber A is used as it is, or the floor, ceiling and side walls are thermally insulated and reinforced with a heat insulating material. Therefore, it can be adopted as a curing room of the present invention. In this case, it is needless to say that a hot water production apparatus such as a heat pump unit is used instead of the conventional heavy oil boiler, and that the piping and spraying means must be conventional or changed according to the present embodiment. Yes.

  FIG. 6 is a schematic perspective view of another embodiment of the concrete curing room in the production of the concrete secondary product according to the present invention. The concrete curing room 27 assembles horizontal members such as columns and beams as a shaft assembly by a single pipe 28 and a joint 29 at a place where the concrete secondary product W is installed, in the vicinity thereof or at an appropriate place outside. A heat insulating panel 30 is attached to the horizontal member. By attaching a downward U-shaped hook 31 to the back side of the heat insulation panel 30, it can be attached to the horizontal member by latching. Moreover, the through-hole 32 can be formed in the downward part of the heat insulation panel 30, and it can be set as the insertion part of the pipe | tube tip part 33 of a housing, and a heat-source part.

  Inserted into the through-hole 32 is a tube tip 33 and / or a heat source provided with a locking means such as a hook connected to a hot water production apparatus disposed near the curing chamber 27, and A spray nozzle 34 is integrated with the pipe tip 33 by screwing or the like, and a means for circulating hot water is integrated with the heat source. An appropriate number of spray nozzles for spraying hot water having a fine particle diameter of 10 μm to 1000 μm into the curing chamber 27 is arranged at predetermined intervals in the spray nozzle portion 34. The tube tip 33 can fix the spray nozzle upward or obliquely upward on a wall or other place using a locking means.

  In addition to the warm water spraying means, an air heating device may be provided as a heat source, arranged in the curing chamber 27, and the through hole 32 may be used for the wiring. The power supply in this case is obtained from a household or factory power outlet.

  After the concrete secondary product W is installed in the curing room 27, the ceiling surface is covered with a heat insulating panel or a heat insulating sheet to form a closed space.

  The closed space is sprayed with warm water of fine particles of 10 μm to 1000 μm from a spray nozzle formed on the pipe tip 33 inserted through the through hole 32, and is heated by air heating means obtained from a household or factory power outlet, They are adjusted by the control device, and the space in the curing room 27 can be set to the optimum environment of temperature and humidity similar to those of the above-described embodiments suitable for curing the concrete secondary product W.

  The assembly-type concrete curing chamber 27 can be appropriately sized by appropriately connecting the single pipes, and can be easily moved by attaching casters to the lower ends of the single pipes. The

  The single pipe pipe 28, the joint 29, the heat insulation panel 30 and the like before assembly can be efficiently stored by stacking them, and they can be stored in a small storage space, and a large curing room is always prepared. Therefore, it is possible to assemble the curing room 27 that is efficiently required during curing.

  In the concrete curing room of Example 6 as well, as in the previous example, warm water drained by providing an inclined slope on the floor surface was used to wash the aggregated hot water generated by washing and washing the mold, hot water, aggregate, etc. Needless to say, it can be separated and recovered.

A Concrete curing chamber B High pressure heavy oil boiler C, E Piping D Curing sheet W Concrete secondary product Y Formwork 1 Concrete curing room 2 Floor 3 Ceiling 4 Side wall 5 Opening 6 Hot water spray nozzle 7 Piping 8 Hot water production device 9 Hot water pressure increase Pressure pump 10 Heating device 11 Panel radiator 12 Hot water return pipe 13 Hot water return pipe 14 Hot water tank 15 Temperature / humidity sensor 16 Automatic control device 17 Heat pump hot water production device 18 Electric heater 19 Drain receiving side groove 20 Hot water receiving tank 21 Cleaning device 22 Piping 23 Cleaning Container 24 Compressor 25 Recovery tank 26 Scraping means 27 Concrete curing room 28 Single pipe 29 Joint 30 Heat insulation panel 31 U-shaped hook 32 Through hole 33 Pipe tip 34 Spray nozzle part

Claims (5)

  In a concrete curing device in the production of a secondary concrete product, a floor, a ceiling and a side wall constitute a curing room with a heat insulating material, and at least one side of the side wall is an openable / closable opening for carrying in the secondary concrete product, On the inner side of the side wall, a pipe connected to a hot water production apparatus disposed near the curing chamber is supported, and an appropriate number of spray nozzles for ejecting hot water having a diameter of 10 μm to 1000 μm are provided at predetermined intervals on the pipe. It is provided as a heating and humidifying means, and an air heating means connected to the hot water production apparatus is provided on the inside of the curing room, and a control means for controlling the heating and humidifying means and the air heating means is provided. Concrete curing equipment.   In a concrete curing apparatus in the production of secondary concrete products, a curing room in which the ceiling and side walls can be assembled by a heat insulating material is configured, and the side walls are composed of pillars and horizontal members assembled by a single pipe, and A hot water production apparatus comprising a heat insulating panel that can be freely hooked by a hook and having a through-hole for entering and exiting the spray nozzle on the side wall, the hot-water producing device disposed in a position close to the curing chamber in the through-hole Connected piping is inserted, and from the piping, an appropriate number of spray nozzles for ejecting hot water having a diameter of 10 μm to 1000 μm are arranged at predetermined intervals as heating and humidifying means, and on the inner side of the hot water production apparatus A concrete curing device comprising a connected air heating means and a control means for controlling the heating and humidifying means and the air heating means.   The concrete curing apparatus according to claim 1 or 2, wherein the hot water production apparatus is a heat pump type hot water production apparatus.   The concrete curing device according to any one of claims 1 to 3, wherein the air heating means is provided inside the ceiling and / or inside the side wall.   In the concrete curing apparatus, a hot water receiving tank for accumulating hot water discharged from the curing room, a cleaning apparatus connected to the hot water receiving tank through a pipe, and a recovery tank for recovering the hot water used in the cleaning apparatus are formed, and the recovery tank The concrete curing device according to any one of claims 1 to 4, wherein the hot water is separated into water and aggregate and reused.