CN112076964A - Lost foam coating drying room with quick energy-saving air duct - Google Patents

Abstract

The invention discloses a lost foam coating drying room with a quick energy-saving air channel, belonging to the technical field of lost foam coating drying, and comprising a drying room body, wherein one end of the outer side of the drying room body is provided with an air circulation heating device; the air outlet and the air inlet of the air circulation heating device are respectively communicated with the air inlet duct and the air return duct through pipelines. The evaporative pattern coating drying room with the rapid energy-saving air duct provided by the invention has the advantages that the drying room is totally enclosed, no emission is caused, the drying cycle is realized, the air outlet and the air return are uniform, the drying efficiency is high due to the penetration and flowing of the air inside and outside the pattern without dead angles, the same product efficiency is doubled, the operation cost is reduced by 30%, the evaporative pattern coating drying room is not influenced by humidity and atmosphere, and the performance is stable.

Description

A lost foam paint drying room with fast energy-saving air duct

technical field

The invention belongs to the technical field of lost foam paint drying, in particular to an lost foam paint drying room with a fast energy-saving air duct.

Background technique

In the current manufacturing, the mold is the most important part of the production process, and the lost foam is widely used in the mold application; the lost foam is a foam plastic mold, which is an indispensable mold for lost foam casting. The lost foam must be coated with paint before it is used for casting, and after the coating is completed, the lost foam needs to be dried in a drying room to cure the coating. However, the lost foam needs to be heated and dried. The general lost foam drying process is carried out in the mold drying room built in the factory. In order to save energy, the currently used drying room can recycle the heat in the drying room. It has played a good energy-saving effect. However, the current drying room has uneven drying of the lost foam. It is very important for the lost foam to be heated evenly during the drying process. quality.

At the same time, the current lost foam casting industry uses an air energy heat pump as the heating source, and the single-pass coating is dried for about 6-8 hours, and the second- and third-pass coatings are dried for about 12 and 20 hours; the steam radiator is used as the heating source for single-pass coating drying. It takes about 6-8 hours to dry, and about 16 to 24 hours for two or three times of coating. The drying time is long, the running cost is high, and the effect cannot meet the requirements of the lost foam casting process.

Therefore, there is an urgent need for an lost foam coating drying room that can make the lost foam coating uniformly heated during the drying process, has a short drying time, and has high efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a drying room for the lost foam coating, which can make the lost foam coating uniformly heated during the drying process, has a short drying time and has high efficiency. The present invention adopts following technical scheme:

A lost foam paint drying room with fast energy-saving air duct, comprising a drying room body, an air circulation heating device is arranged at one end of the outer side of the drying room body, and an air circulation system is arranged in the drying room body, so the The air circulation system includes an air inlet duct and a return air duct, the air inlet duct is provided with a number of air outlet holes, and the return air duct is provided with a number of return air holes; the air outlet of the air circulation heating device and the air inlets are respectively communicated with the air inlet air duct and the return air duct.

Further, the air inlet air duct is arranged at the bottom of the drying room body, and the return air duct is arranged at the top of the drying room body.

Further, the air inlet air duct is arranged at the top of the drying room body, and the return air duct is arranged at the bottom of the drying room body.

Further, the air inlet duct includes a horn-shaped air duct and several air inlet channels, the air inlet end of the air duct is connected to the air outlet of the air circulation heating device, and the other end is communicated with the air inlet channel. The air inlet channel is provided with a number of through holes for air outlet; the return air channel includes a number of return air channels, and the return air channel is provided with a number of through holes for return air; The air end is connected with the air inlet of the air circulation heating device.

Further, an induced draft fan is arranged on the return air passage, and the induced draft fan makes the air flow from the inside to the outside in the return air passage; the outlet end of the return air passage is provided with a dehumidifier for drying into the The air of the air circulation heating device; the outlet of the dehumidifier is communicated with the air inlet of the air circulation heating device.

Further, the air inlet channel or the air return channel provided at the bottom of the drying room body includes a concave groove and a sealing plate; the sealing plate is arranged at the top of the concave groove, and forms a concave groove with the concave groove. A cavity with a gradient of 5%; the air outlet through holes are arranged on the sealing plate.

Further, the air return pipe includes a groove and a cover plate, the cover plate is arranged at the top of the groove and forms a 5% gradient cavity with the groove, and the cover plate is provided with several Wind through holes.

Further, a door body is provided on the outer side of the drying room body at the end corresponding to the air circulation heating device, and the door body is two double-opening doors.

Further, there can be multiple drying rooms, which are centrally controlled through the ETHERNET industrial network and operated by a PLC control cabinet; wherein, the PLC control cabinet is provided with a digital display screen, and the digital display screen displays each drying room. The temperature and humidity inside the room, and the data of the drying room are centrally displayed on the digital display screen, which is a p4 full-color LED display.

Beneficial effects of the present invention:

The lost foam paint drying room provided by the invention has a fast energy-saving air duct, a fully enclosed non-discharge drying cycle, the air outlet and return air are uniform, the air inside and outside the model penetrates and flows without dead ends, and the drying efficiency is high, and the same product efficiency It is doubled, the operating cost is reduced by 30%, and it is not affected by the humidity and climate, and the performance is stable.

At the same time, the air circulation heating device is equipped with high and low pressure protection, compressor overload protection, high temperature protection for exhaust temperature, and automatic defrosting function to ensure the safe operation of the unit; compared with the same period of time, the powerful dehumidification of the present invention can increase dehumidification by 20 %-30%; when the relative humidity of the environment is 30%, the length dehumidification can be carried out, the maximum temperature of the unit can reach 65 ℃, and the minimum relative humidity can reach 10%.

Description of drawings

Fig. 1 is the structure schematic diagram of the lost foam paint drying room of the lower air inlet air duct and the upper return air duct

Fig. 2 is a schematic top view of the structure of the lower air inlet air duct in Fig. 1

FIG. 3 is a schematic top view of the structure of the upper return air duct in FIG. 1

Fig. 4 is a schematic diagram of the right side view of Fig. 1

FIG. 5 is a schematic view of the cross-sectional structure of A-A in FIG. 4

Figure 6 is a schematic diagram of the structure of the lost foam paint drying room with the upper air inlet air duct and the lower return air duct

Among them, 1. Drying room body; 2. Air circulation heating device; 3. Inlet air duct; 4. Return air duct; 5. Dehumidifier; 9. Air duct; 10. Through hole; 11. Door body.

Detailed ways

Example 1

This embodiment provides an lost foam paint drying room with a fast energy-saving lower air inlet air duct and an upper return air duct, including a drying room body 1, and an air circulation heating device 2 is provided at one end of the outer side of the drying room body 1 , The drying room body 1 is provided with an air circulation system. The air circulation system includes an air inlet duct 3 and a return air duct 4. The air inlet duct 3 is provided with a number of air outlet holes, and the return air duct 4 is provided with several Return air hole; the air outlet and air inlet of the air circulation heating device are respectively communicated with the air inlet air duct 3 and the return air duct 4 .

In this embodiment, the air outlet direction of the air outlet holes is aligned with the lost foam model parts to be dried on the model frame carriage 6 .

In this embodiment, the size of the drying room body 1 is 12 meters long, 6 meters wide, and 3.3 meters high.

In this embodiment, the air inlet duct 3 is arranged at the bottom of the drying room body 1, and the return air duct 4 is arranged at the top of the drying room body.

数量为100*100个。Among them, the air inlet duct 3 includes a horn-shaped air duct 9 and several air inlet channels, the air inlet end of the air duct 9 is connected with the air outlet of the air circulation heating device 2, and the other end is connected with the air inlet channel; There are several through holes 10 for air outlet; the return air duct 4 includes several return air passages, and the lower end of the return air passage is provided with several through holes 10 for return air; the air outlet end of the return air passage and the air circulation heating device 2 air inlet connection. In this embodiment, the through hole 10 may be a circular hole, a square hole or other special-shaped holes, preferably a circular hole; the size of the circular hole is

The quantity is 100*100.

The air circulation heating device 2 is an air energy heat pump or a steam heat sink radiator.

In this embodiment, the air source heat pump or the main engine fan of the steam fin radiator blows the heated air to the air duct 9 .

An induced draft fan 7 is arranged on the return air passage, and the induced draft fan 7 forms an air flow from the inside to the outside in the return air passage; The outlet of the dehumidifier 5 communicates with the air inlet of the air circulation heating device 2 . The air inlet channel provided at the bottom of the drying room body 1 includes a concave groove and a sealing plate 8. The sealing plate 8 is arranged at the top of the concave groove and forms a cavity with a 5% slope with the concave groove, and a through hole for air outlet. 10 is arranged on the sealing plate 8 . The dehumidifier 5 is preferably an industrial dehumidifier; the induced draft fan 7 is an axial flow fan, and the number is four.

In this embodiment, the sealing plate 8 is sealed with the concave groove to form a cavity with a width of 6 meters, a length of 12 meters and a height of 220-250 mm with a slope of 5%.

In addition, a door body 11 is provided on the outer side of the drying room body 1 at one end corresponding to the air circulation heating device 2 , and the door body 11 is two double-opening doors.

In this embodiment, the size of the bell mouth air duct 9 inside the drying room body 1 is 220 mm, and the size of the air duct 9 to the double-opening door of the drying room is 250 mm.

In this embodiment, there may be multiple drying rooms, which are centrally controlled through the ETHERNET industrial network and operated by a PLC control cabinet; wherein, the PLC control cabinet is provided with a digital display screen, which displays the internal temperature of each drying room. Temperature and humidity, the data of the drying room are centrally displayed on the digital display screen, which is a p4 full-color LED display.

The working process of this embodiment: the host fan of the air energy heat pump or the steam heat sink radiator blows the heated air to the air duct 9, and the air duct 9 guides the hot air to each air inlet channel, and through the covering The through hole 10 of the sealing plate 8 above the channel is discharged, and the lost foam model parts to be dried on the model frame car 6 are dried, and then the prefabricated return air enters through the return air through hole 10 on the return air channel. 4, and is introduced into dehumidifier 5 by 4 axial fans for dehumidification, and the dry air is then heated by the host fan through air energy heat pump heating or steam radiator heating and circulating operation, so as to achieve closed-type emission-free drying in the drying room. Inner loop.

Example 2

This embodiment provides an lost foam paint drying room with a fast energy-saving upper air inlet air duct and a lower return air duct. The air inlet air duct 3 is arranged on the top of the drying room body, and the return air duct 4 is arranged on the drying room. Bottom of the room.

Among them, the return air duct 4 is to excavate 8 cement trenches of 200*200*11500mm as concave grooves when the drying room is constructed on the ground; The air through holes 10 are provided with a plurality of through holes 10 for air outlet at the lower end of the air inlet channel.

圆形通孔。In this embodiment, the sealing plate 8 is provided with 100*100

round through hole.

Other settings are the same as in Example 1.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the present invention. within the scope of the technical solution of the present invention.

Claims (8)

1. A lost foam paint drying room with fast energy-saving air duct, characterized in that it comprises a drying room body (1), and an air circulation heating device (2) is provided at one end of the outer side of the drying room body (1). , the drying room body (1) is provided with an air circulation system, the air circulation system includes an air inlet air duct (3) and a return air duct (4), and the air inlet air duct (3) is provided with There are several air outlet holes, and the return air duct (4) is provided with several return air holes; the air outlet and air inlet of the air circulation heating device are respectively connected with the air inlet air duct (3) and the return air. The air duct (4) is connected. 2. The lost foam paint drying room according to claim 1, characterized in that, the air inlet duct (3) is arranged at the bottom of the drying room body (1), and the return air duct (4) ) is arranged on the top of the drying room body. 3. The lost foam paint drying room according to claim 1, wherein the air inlet duct (3) is arranged on the top of the drying room body, and the return air duct (4) is arranged on the top of the drying room body. the bottom of the drying room body. 4. The lost foam paint drying room according to claim 2 or 3, wherein the air inlet duct (3) comprises a horn-shaped air duct (9) and several air inlet passages, and the air duct The air inlet end of the pipe (9) is connected to the air outlet of the air circulation heating device (2), and the other end is communicated with the air inlet channel; the air inlet channel is provided with a plurality of through holes (10) for air outlet The return air duct (4) includes several return air passages, and the return air passage is provided with a plurality of through holes (10) for return air; the air outlet end of the return air passage and the air circulating heating The air inlet of the device (2) is connected. 5. The lost foam paint drying room according to claim 4, characterized in that, an induced draft fan (7) is provided on the return air passage, and the induced draft fan (7) makes the return air passage form a Air flow from inside to outside; a dehumidifier (5) is provided at the outlet end of the return air passage for drying the air entering the air circulation heating device (2); the outlet of the dehumidifier (5) circulates with the air The air inlet of the heating device (2) is communicated. 6. The lost foam paint drying room according to claim 5, wherein the air inlet channel or the air return channel provided at the bottom of the drying room body (1) comprises a concave groove and a sealing plate (8); The sealing plate (8) is arranged at the top of the concave groove, and forms a cavity with a 5% gradient with the concave groove; the air outlet through hole (10) is arranged on the sealing plate ( 8) on. 7. The lost foam paint drying room according to claim 1, characterized in that, a door body (11) is provided on the outer side of the drying room body (1) at one end corresponding to the air circulation heating device (2) , the door body (11) is two double-opening doors. 8. The lost foam paint drying room according to claim 1 is characterized in that, the drying room can be a plurality of, centralized control through ETHERNET industrial network, and adopts PLC control cabinet to operate; wherein, the PLC control cabinet is set There is a digital display screen, the digital display screen displays the temperature and humidity inside each drying room, the data of the drying room is displayed on the digital display screen, and the digital display screen is p4 full color LED display.

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