JP3243622U - drying system - Google Patents

Abstract

The present invention provides a drying system equipped with a temperature and pressure control mechanism, which has a high speed drying process and a favorable filtration effect. The drying system according to the present invention includes a drying cylinder device 100 including a drum 102 containing plastic particles to be dried, and a gas supply device 200 used for providing hot air and cold air, the hot air being supplied through a flow path. 500 and a differential pressure gauge 404 attached to a main body 402, the main body includes a regulator 400 connected to the drying cylinder device via a flow path 502, and a flow path. a filter collecting device 300 comprising a separation drum 302 connected to the body of the regulator via 504 and to a gas supply device via another flow path 506, the cold air of the gas supply device being sent to the separation drum; It is composed of: [Selection diagram] Figure 1

Description

The present invention relates to the technical field of drying equipment. More particularly, the present invention relates to a drying system with temperature and pressure control mechanisms, which is applied to a drying drum containing plastic granules and provides a fast drying effect.

A typical plastic injection molding or injection molding manufacturing process includes pre-processes such as making a mold, sorting plastic materials, and selecting a compatible model of injection molding machine. In the molding process, the plastic material is first dried to remove moisture, then heated and melted, then the molten plastic material is injected into the mold, the material is cooled and hardened, and the mold is opened and molded. The finished product is removed from the mold.

Because moisture affects the success or failure and quality of molded products, the industry employs dehumidifiers or dryers to dehumidify and dry plastic materials. Known plastic material dehumidifiers are comprised of a number of parts, such as a canister, a compressor, a heat exchanger, a fan, a water tank, a housing, and a controller. The principle is to regenerate the temperature of the outside air using electric heat, blow the hot air into the canister, and bring the plastic material inside the canister into contact with the converted hot air to evaporate moisture.

The above-mentioned method and equipment have a dehumidifying and drying effect on plastic particles. However, after the hot air enters the canister and dries the plastic material, the gas inside the canister will form a high temperature and high humidity condition, and if the moisture contained in the hot gas is not further removed, the hot gas will be regenerated. becomes unavailable. Therefore, cold air has to be reintroduced and heated again, wasting time and energy.

In addition, since there is dust and oil on the surface of the plastic particles, the dust and oil will be mixed in with the hot air after the plastic particles are dried, and if the mixed dust and oil are directly discharged, it will obviously pollute the air. Ta. Although a filter can be used to filter out dust and oil, the high humidity of the gas emitted from the canister makes the filter wet, causing dust and oil to stick to the surface of the filter, reducing the filtration effect.

Therefore, the inventor of the present invention believed that the above-mentioned drawbacks could be improved, and as a result of intensive studies, he came up with the proposal of the present invention, which effectively improves the above-mentioned problems through rational design.

In view of the disadvantages that traditional drying equipment takes a long time to dry plastic particles and has low filtration effect, the present invention is a high-speed drying system with a fast drying process, time-saving effect, and favorable filtration effect. I will provide a.

To achieve the above object, the present invention provides a drying system with temperature and pressure control mechanism.
The drying system according to the present invention is
a drying cylinder apparatus including a drum containing plastic granules to be dried;
a gas supply device used to provide hot air and cold air, the hot air being sent through a flow path into a drum of a drying cylinder device;
a regulator including a differential pressure gauge attached to the main body, the main body being connected to the drying cylinder device via a flow path;
a separation drum connected to the body of the regulator through a flow path and connected to a gas supply device through another flow path, a filter collection device through which the cold air of the gas supply device is sent to the separation drum;
It is composed of:
The differential pressure gauge of the regulator is used to detect the pressure difference between the drum and the separation drum, and adjusts the holding pressure in the drum according to the pressure difference.

In a preferred embodiment of the present invention, the drying cylinder device includes a drum connected to a heater and a blower connected to the heater.

In a preferred embodiment of the present invention, the gas supply device includes a fluid tank having a heater and a shunt therein, and a blower located outside the fluid tank and connected to the shunt.
The outlet of the shunt is located in the fluid tank and faces the heater, and the hot air after heating is sent to the drying cylinder device.
The other outlet of the shunt is directed outward and the emitted cold air is directed to a filter collector.

In a preferred embodiment of the present invention, the regulator includes a first control valve and a second control valve attached to the main body.
Each of the first control valve and the second control valve is connected to the drying cylinder device and the filter collection device via a flow path.

In a preferred embodiment of the invention, the filter collection device includes a water collection tank installed at the bottom of the separation drum, a filter installed at the top of the separation drum, and a cooler installed inside the separation drum. , is equipped with.

In a preferred embodiment of the invention, the inner walls of the cooler and the separating drum are spaced apart from each other to form a pitch.

In a preferred embodiment of the invention, the gas supply device and the filter collection device are integrated into one installation.

Other features of the present invention will become clear from the description of this specification and the accompanying drawings.

1 is a schematic configuration diagram showing a drying system equipped with a temperature and pressure control mechanism according to a first embodiment of the present invention; FIG. FIG. 2 is a schematic configuration diagram showing a drying system equipped with a temperature and pressure control mechanism according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that these drawings and descriptions of the contents are only used for illustrative purposes and are not intended to limit the present invention. In addition, terms such as "upper," "lower," "front," and "rear" used in the specification are used to clearly describe the relative positions of members, mechanisms, or structures. It is not a restrictive term.

The drying system according to the present invention includes a drying cylinder device 100, a gas supply device 200, a filter collection device 300, and a regulator 400 (see FIG. 1). The drying cylinder device 100 is connected to a gas supply device 200 via a suitable flow path 500. Drying cylinder apparatus 100 is connected to regulator 400 via a suitable flow path 502. Regulator 400 is connected to filter collection device 300 via a suitable flow path 504. Filter collection device 300 is connected to gas supply device 200 via a suitable flow path 506.

More specifically, the drying cylinder apparatus 100 includes a drum 102 connected to a heater 104 and a blower 106 connected to the heater 104. Drum 102 is used to contain plastic particles to be dried. Gas supply apparatus 200 includes a fluid tank 202 having a heater 206 and a shunt 208 therein, and a blower 204 located outside of fluid tank 202 and coupled to shunt 208 . Since the outlet of the shunt 208 is located within the fluid tank 202 and faces the heater 206, the gas being released is heated by the heater 206 and increases in temperature. The other outlet of shunt 208 is used to release gas to the outside. Channel 500 is used to connect the thermal outlet end of fluid tank 202 and blower 106 .

The filter collection device 300 is used to collect water and filter out flour and oil. The filter collection device includes a separation drum 302 in which a cooler 304 is disposed, a water collection tank 306 connected to the bottom of the separation drum 302, and a filter 308 attached to the top of the separation drum 302. It is equipped with Water collection tank 306 and separation drum 302 are in communication with each other. The cooler 304 is a rolled metal tube, the inside of which is filled only with gas or refrigerant, and the refrigerant filled is cold water or cooling water. Note that a pitch 310 is provided between the cooler 304 and the inner wall of the separation drum 302. The separation drum 302 has a first joint part 312 and a second joint part 314, and the first joint part 312 and the second joint part 314 are communicated with the inside of the separation drum 302. One end of the flow path 506 is connected to the first junction 312 and the other end is connected to the output end of the shunt 208 inside the fluid tank 202 to the outside.

The regulator 400 includes a main body 402 connected to a differential pressure gauge 404, and a first control valve 406 and a second control valve 408 coupled to the main body 402. A first control valve 406 is connected to the drum 102 of the drying cylinder device 100 via a flow path 502, and a second control valve 408 is connected to the filter collection device 300 via a flow path 504. Next, the fluid pressure from the first control valve 406 and the second control valve 408 is input to the differential pressure gauge 404, so that the pressure difference between the drying cylinder device 100 and the filter collection device 300 is measured, and the holding pressure is adjusted. Use this as the basis for doing so.

Based on the above description, the use of this embodiment is as follows. The blower 204 of the gas supply device 200 is activated to pump outside air into the shunt 208. A portion of the gas flows into the fluid tank 202 and is heated by the heater 206 to raise its temperature, and then flows through the flow path 500 toward the blower 106 of the drying cylinder device 100. The blower 106 pumps the above-described primarily heated air to the heater 104 to perform secondary heating and raise the temperature. Thereafter, the heated air that has been subjected to secondary heating is allowed to enter the drum 102 to dry the plastic particles. The gas discharged outwardly by the shunt 208 enters the separation drum 302 through the flow path 506 and forms a pressure accumulation effect.

A hot exhaust air is formed after the hot air dries the plastic particles within drum 102 and enters filter collection device 300 via channel 502, regulator 400, and channel 504. Since there is a pitch 310 between the wall inside the separation drum 302 and the cooler 304, the high temperature exhaust gas mixed with oil, moisture, and dust enters the separation drum 302, and then the cold air and the air from the shunt 208 are removed. A heat exchange effect occurs due to the inner wall of the separation drum 302, and the temperature decreases. As a result, moisture, oil, and dust mixed in the high-temperature exhaust gas are separated and dropped.

Next, by bringing the originally high-temperature exhaust gas into contact with the cooler 304 and generating a heat exchange effect to lower the temperature, the high-temperature exhaust gas condenses to generate water, which is then directed toward the water collection tank 306. Fall. In addition, oil and partial water also temporarily adhere to the inner wall surfaces of the cooler 304 and separation drum 302 and fall to the water collection tank 306. Note that dust and impurities mixed in the high-temperature exhaust gas also fall toward the water collection tank 306 following the condensed water and oil. Gas containing small amounts of dust and impurities is discharged from filter 308 above separation drum 302 via flow path 504 .

In addition, since the regulator 400 is connected to the drum 102 and the separation drum 302 through the two flow paths 502 and 504, the gas pressure inside the drum 102 and the separation drum 302 is input to the regulator 400, and is detected by the differential pressure gauge 404. Detected. By doing so, the user adjusts the first control valve 406 and the second control valve 408 based on the differential pressure condition between the two, and prevents the gas from the drum 102 from flowing out at a high speed. In other words, by doing this, a pressure accumulation state is formed in the drum 102, the gas that has undergone secondary heating stays in the drum 102 for a long time, and the high temperature gas is distributed over a wide range. Therefore, the degree of drying of the plastic grains near the bottom of the drum 102 is effectively increased, and the plastic grains located in other positions are also dried by the high-temperature gas because the high-temperature gas is not discharged at a high speed.

As described above, in this embodiment, the differential pressure gauge 404 detects the pressure difference, and the first control valve 406 and the second control valve 408 adjust the holding pressure in the drum 102. Next, the filter collection device 300 filters the powder, impurities, and collected water, and the interior of the separation drum 302 provides a buffering effect to help the drum 102 retain pressure.

In another embodiment of the invention (see FIG. 2), the gas supply device 600 and the filter collection device 610 are integrated into one installation. The gas supply device 600 and the filter collection device 610 are similarly connected to the drying cylinder device 620 and the regulator 630 by combining a predetermined number of channels 640, 650, 660, 670. By doing this, a simple structural form is obtained.

The above explanation is for explaining the present invention, and should not be construed to limit the invention described in the claims of the utility model registration or to restrict the scope thereof. Furthermore, it goes without saying that the configuration of each part of the present invention is not limited to the above-mentioned embodiments, but can be modified in various ways within the technical scope of the claims for utility model registration.

100 Drying cylinder device 102 Drum 104 Heater 106 Blower 200 Gas supply device 202 Fluid tank 204 Blower 206 Heater 208 Shunt 300 Filter collection device 302 Separation drum 304 Cooler 306 Water collection tank 308 Filter 310 Pitch 312 First joint 314 Second joint Part 400 Regulator 402 Main body 404 Differential pressure gauge 406 First control valve 408 Second control valve 500 Flow path 502 Flow path 504 Flow path 506 Flow path 600 Gas supply device 610 Filter collection device 620 Drying cylinder device 630 Regulator 640 Flow path 650 Flow path 660 channel 670 channel

Claims (7)

A drying system comprising a temperature and pressure control mechanism, the drying system comprising:
a drying cylinder apparatus including a drum containing plastic granules to be dried;
a gas supply device used to provide hot air and cold air, the hot air being sent through a flow path into the drum of the drying cylinder device;
a regulator including a differential pressure gauge attached to a main body, the main body being connected to the drying cylinder device via a flow path;
a filter collection device, comprising a separation drum connected to the main body of the regulator through a flow path and connected to the gas supply device through another flow path, the cold air of the gas supply device being sent to the separation drum; and,
Equipped with
A drying system characterized in that the differential pressure gauge of the regulator is used to detect a pressure difference between the drum and the separation drum, and the holding pressure in the drum is adjusted based on the pressure difference. The drying system according to claim 1, wherein the drying cylinder device includes the drum connected to a heater and a blower connected to the heater. The gas supply device includes a fluid tank having a heater and a shunt inside, and a blower located outside the fluid tank and connected to the shunt,
The outlet of the shunt is located in the fluid tank and faces the heater, and the hot air after heating is sent to the drying cylinder device;
Drying system according to claim 1, characterized in that the other outlet of the shunt is directed outward and the emitted cold air is sent to the filter collection device. The regulator includes a first control valve and a second control valve attached to the main body,
The drying system of claim 1, wherein each of the first control valve and the second control valve is connected to the drying cylinder device and the filter collection device via the flow path. The filter collection device includes a water collection tank installed at the bottom of the separation drum, a filter installed at the top of the separation drum, and a cooler installed inside the separation drum. The drying system according to claim 1, characterized in that: The drying system according to claim 5, wherein inner wall surfaces of the cooler and the separation drum are spaced apart from each other to form a pitch. 2. Drying system according to claim 1, characterized in that the gas supply device and the filter collection device are integrated into one installation.