Cooler for trays

FIELD: heating.

SUBSTANCE: unit includes housing (1), conveyor (2) for tray (3) delivery, covering chambers (4, 5) of air and water cooling. In addition, air or water cooled chambers (4, 5) are provided with walls (6), installed inside chambers (4, 5) along conveyor. Air cooled chamber (4) walls (6) are perforated, while water-cooled chambers (5) are made of capillary porous material with steam discharge pipes (9).

EFFECT: improvement of output and reliability.

2 cl, 1 dwg

 

The invention relates to a device for cooling pallets in the production of chipboard and can be used in the woodworking industry.

A device for cooling trays ((SU 537845, MKI 3 29J 5/04), consisting of a conveyor for feeding pallets, nozzles for supplying cooling water from the top and bottom of the pallet.

The disadvantage of this device is work insecurity, because the water washes away the crushed wood, which in small quantities remains on pallets after their exit from the press, and the resulting dirt gets into the moving parts of the conveyor, which may damage it. In addition, the water hitting the surface of the pan, sprayed in all directions. Therefore requires a large consumption of water, drops of water fall into the conveyor, which affects the operating conditions of the pipeline.

Closest to the proposed to the technical essence and the achieved result is a device for cooling trays (SU 1085853, MKI 3 29J 5/04), comprising a conveyor for feeding pallets and covering his camera air cooling nozzles for air supply, camera, water cooled, provided with an endless conveyor belts with nozzles for humidification. While the front while moving pallets wall of the water cooling chambers are open for o is Yes steam-air mixture, moreover, in the input side of the air cooling chambers have walls that are made curved and formed with air cooling chambers, and a conveyor for feeding pallets tunnel for steam-gas mixture, and nozzles for air supply are located at the exit of the chamber air cooling.

The disadvantage of this device is the low efficiency of air cooling as air is supplied through a nozzle located at the outlet of the chamber air cooling. Therefore, the output from the device, the trays are cooled locally where a jet of air impinges at an acute angle on the surface of the pallet. In addition, due to the large aerodynamic resistance of the tunnel portion of the air will pass through the sealing elements at the output of the device, and the oncoming traffic steam-air mixture in the chamber air cooling may not provide effective heat removal from the pallet. Moreover, since the impregnation of the water conveyor belts are made through a nozzle locally, humidity tapes changed: the output of the envelope rollers most of it, and at the entrance is the smallest, which affects the cooling of the pallets due to uneven cooling. The use of moving conveyor belts cannot ensure reliable operation of devices: possibly jumping belts with rollers and tear tapes.

The objective of the invention is to intensify the heat transfer from the surface of the pallets.

The technical result is increased productivity and reliability of the device.

This is achieved by a device for cooling pallets, comprising a casing, a conveyor for feeding pallets, covering his camera air and water cooling. When this camera air and water cooling is further provided with sides mounted inside the chambers along the conveyor, while the walls of the chambers air cooling is made perforated, and the camera cooling from capillary-porous material with steam venting tubes. Camera air and water cooling installed with the possibility of independent vertical movement.

Due to the fact that the additional wall of the air cooling chambers are installed inside the camera along the conveyor and executed perforated, cooling trays on the input and output of the device is the impact of the jets, which provide high-intensity uniform cooling of pallets without them wrinkling.

Due to the fact that the additional chamber wall cooling is made of capillary-porous material with steam venting tubes, provides an intense and uniform cooling of pallets without wrinkling. P and provides reliable operation due to the absence in the cooling system of moving parts.

Installing cameras air and water cooling with independent vertical movement allows you to adjust the gap between the cooled pan, and additional walls, which gives an opportunity to choose the best working conditions due to the change of heat transfer depending on the speed of movement of the pallets.

The drawing shows a longitudinal section of a device for cooling trays. It consists of a casing 1, a conveyor 2 for conveying pallets 3, covering both sides of the conveyor 2 cameras, air cooling 4 and chamber water cooling 5. Camera air cooling 4 is further provided with perforated walls 6 and hoses 7, air is injected into them. Luggage cooling 5 is further provided with walls 8 of the capillary-porous material, such as foam rubber or felt, and steam venting tubes 9. The camera cooling 5 for supplying water is connected to the hose 10. In the casing 1 fixed rack 11. Camera air cooling 4 and Luggage cooling 5 can independently from each other to move relative to the uprights 11, and their movement is fixed by nuts 12. At the inlet and the outlet of the casing 1 set of sealing elements 13. The casing 1 has an exhaust window 14.

The device operates as follows.

The pallet 3 by the conveyor 2 is served in to the action of air cooling 4 through the sealing elements 13 in the casing 1, where it is cooled by air entering through the perforated wall 6 hose 7. When exiting from the perforated walls 6 are formed of impact of the jet, which, striking the surface of the tray 3 at a speed of 40 m/s, cool the pallet 3 from the temperature of 160°With up to a temperature of 120°C. While cooling the pallet 3 is characterized by high intensity and uniformity without wrinkling them. After passing through chamber air cooling 4 tray 3 into the chamber water cooling 5, in which through the hose 10 serves water with a temperature of 20°C. the Water is evenly distributed over the volume of the chamber water cooling 5 and a steady stream passes through the wall 8 of capilano-porous materials, falling on the surface of the pallet 3. Pairs obtained from partially evaporated water is removed through paratwada tube 9 in the casing 1. Next, the pallet 3 at a temperature of 80°enters the chamber air cooling 4, installed at the outlet of the casing 1, where it is cooled to a temperature of 30°With the impact jets. This removes the water that remained on the surfaces of the pallet 3 after the release of his chamber water cooling 4. The resulting vapor mixture is removed from the casing 1 through the exhaust window 14.

Depending on the speed of the pallet 3 with nuts 12 pick up the gap IU the control surfaces of the pallet 3 and additional perforated walls 6 of the air cooling chambers 4 and additional walls 8 camera, water-cooling, provides optimal conditions cooling trays.

In the three-stage machining pallet is achieved by high-intensity cooling pallets without them wrinkling.

The proposed device provides improved cooling of pallets without distortion, which increases their service life, reliable operation and improves the quality chipboard.

1. Device for cooling pallets, comprising a casing, a conveyor for feeding pallets, covering his camera air and water cooling, characterized in that the chamber air and water cooling is further provided with sides mounted inside the chambers along the conveyor, while the walls of the chambers air cooling is made perforated, and the camera cooling from capillariesthe material with steam venting tubes.

2. The device according to claim 1, characterized in that the chamber air and water cooling installed with the possibility of independent vertical movement.



 

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