Thermoform for the manufacture of prestressed concrete products

 

(57) Abstract:

Usage: in the building materials industry, in particular for the manufacture of prestressed concrete products in thermoformed. The essence of the invention: termoform pallet contains and boards made with heat compartments and compartments for refrigerant, cap, valve, installed in the slots of the lugs, the input and output pipes. While the pallet and the boards have additional compartments for refrigerant communicating with the main and adjacent to the other side of thermal compartments. Cover is made with a compartment for refrigerant communicating with compartments for refrigerant sides and base, and is supplied mounted on the output gear compartment and the outlet pipe. In the limit valve removable secured to the ends of the pallet and longitudinal sides. 4 Il.

The invention relates to the construction materials industry, in particular for the manufacture of prestressed concrete products in thermoformed.

Closest to the technical nature of the proposed line is termoform for the manufacture of prestressed concrete products, including pallets and boards made with heat which run in the grooves of the lugs, posted in the form, and input and output connections for the coolant and refrigerant [1]

The disadvantage of this device is uneven heating of the concrete section and they are not provided the specified mode of heat treatment of concrete.

The objective of the invention is the provision of a given mode of heat treatment of concrete.

This task is solved in that in thermoformed for the manufacture of prestressed concrete products, including pallets and boards made with heat compartments for the refrigerant, the cover, the actuator with anchors at the ends inserted in the slots of the lugs placed in the form, and input and output connections for the coolant and refrigerant, the pallet and the side is made with extra compartments for the refrigerant, connected with the main and adjacent to the other side of thermal compartments, and cover is made for storing refrigerant, communicating with compartments for refrigerant sides and base and is supplied mounted on the outlet compartment, gear outlet pipe, the valve stops removable secured to the ends of the pallet and longitudinal sides.

In Fig.1 shows termoform, type in the plan without a cover; Fig.2 section a-a in Fig.1; Fig.3 2, having input and output connections for coolant T, respectively 3, 4 and 5, 6.

On the ends of thermoform are power lugs 7, resting on the ends of the sides 1 and tray 2 and having grooves for installation with anchors at the ends of the working armature 8 concrete products 9.

On the pallet 2 fixed fixed 10 and the movable end 11 side with grooves for reinforcement 8. On the one hand end of the stop 7 is connected with a direct pipeline to the reservoir 12 for refrigerant X (air) inlet and outlet pipes, respectively, to the sides 13 and 14 and the pallet 15 and 16. While the outlet 16 of the pallet is located on the fixed Board 10 provided with the first.

In turn, the Board 1 and the tray 2 is made in the cross section (Fig.2 4) of the main heat compartments, respectively, 17 and 18 for the carrier T and the extra internal and external compartments, respectively, 19 and 20 and 21 and 22 for refrigerant H. additional internal compartments boards and pallet 19 and 21 together with the front sides 10 and 11 form form concrete products 9 and additional exterior compartments thermally insulated.

Compartments 19,20,21 and 22 are communicated with each other (Fig.1 3) and with the compartment 23 of the cover 24, and is 16 for refrigerant X is made, for example, a cone with wearing them elastic covers 28 (Fig.4) made of heat-resistant rubber or paronite.

In turn, places the passage in the cover 24 of the nozzle 14 and thence compartment 23 has a socket 29 which, when the cover 24 is in the design position will provide sealing compounds all compartments for refrigerant.

The presented figures are not shown gasket or additional details to ensure sealing of the gap where it passes the valve 8 through the end of termonorte 10 and 11, a lock for securing the lid 24 to thermoburn 1, 10, 11 and the insulation of the collector 12.

Structurally additional internal and external termodeck for refrigerant should not impede thermal elongation of power termodeck for coolant, for example, they may be slightly shorter than the last, and so on

The device operates as follows.

Originally open termonorte 1, 11 (Fig.1), grease the formwork surface and position the Board 11, close to thermoform. The ends of the sides 1 and tray 2 fixed power lugs 7, the grooves of which the end flanges 10 and 11 firmly establish armature 8 with anchors at the ends. On the places of passage of the valve 8.

At this preliminary stage of manufacture of the first group thermoform finish.

The tension of the valve 6 is carried out by a continuous supply of high-temperature heat carrier (T 250 300o(C) in the heating compartments 17 and 18 boards 1 and tray 2 and further linear thermal expansion of the latter. At the end of the tension reinforcement carry out laying and compacting concrete in the received form concrete products 9. Next, close thermoform cover 24, so that the output pipes of the refrigerant sides 14 and tray 16 went into the hole with the socket 29 of the compartment lid 23. Then the cover 24 is pressed tightly against the upper surface of the concrete products 9, fixing locks to the sides 1.

The inclusion of the circulation system coolant, start the period of rise of the temperature of heat treatment of concrete. Refrigerant (air) at this stage passes through a heater and then into the reservoir 12 termoform, where the input to the nozzles 13 of the flanges 1 and 15, the pallet 2 refrigerant enters first additional exterior compartments 20 and 22, having received heat from one side of the compartment 17 and 18, enters additional internal compartments 19 and 21. Taking extra warmth on the other side of the compartment, hlada the derivative of the nozzles 14 and 16 into the compartment 23 of the cover 24 and heats thereby the upper surface of the concrete products 9. Gear 25 regulate the speed of the refrigerant from the compartment 23 and, thereby, maintain a specific mode of heat treatment of concrete thermoformed, regardless of the item manufactured prestressed concrete products.

The heat treatment is carried out before the start of the cooling-off period of heat treatment of concrete when required a continuous flow of high temperature fluid into the compartments 17 and 18 to provide the required pre-tension in the reinforcement 8.

Upon completion of the heat treatment of concrete (the start of the cooling mode), the flow temperature of the heat carrier in the heating compartments stopped and, simultaneously, the system of circulation of the refrigerant is transferred to the cooling mode, i.e., in the primary and secondary compartments served chilled as the coolant and the refrigerant.

During cooling thermoform it is shortening, and thus is a smooth vacation all that hard rods 8 on concrete products 9. Then cut off the circulation system of the cooling fluid and coolant, open the cover 24 and the flanges 1, 11, are required valve 8 and the finished prestressed product transport times on the cart export products.

the meet place saving labor and material costs by eliminating expensive equipment for tension reinforcement. The energy of the fluid is used both for tension reinforcement, heat treatment of concrete, and to create a smooth vacation tense reinforcement for concrete.

2. Design termodeck cover with gear on the output allows you to get in thermoformed different modes of heat treatment of concrete due to the change speed of the output of the refrigerant. Thus the conditions for production in one group thermoform of concrete products for various items, greatly expanding the technological capabilities of the line.

3. The presence in the design of the boards and pallet additional internal and external termodeck located on both sides of the main termodeck, provides for tension reinforcement and heat treatment of concrete, his uniform heating across the section and, as a consequence, the set of linear thermal elongation, thus enhancing the quality of pre-tension. In addition, due to the passage of refrigerant from two sides of the main termodeck increased removal of heat from its walls and provides the specified mode of heat treatment of concrete.

Thermoform for the manufacture of prestressed concrete products, VK is NTA, cover the valve with anchors at the ends inserted in the slots of the lugs placed in the form, and input and output connections for the coolant and refrigerant, characterized in that the base and the sides are made with extra compartments for the refrigerant, connected with the main and adjacent to the other side of thermal compartments, and cover is made with a compartment for refrigerant communicating with compartments for refrigerant sides and base, and is supplied mounted on the output gear compartment and the outlet pipe, the valve stops the pickup attached to the ends of the pallet and longitudinal sides.

 

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