JP3068082U - Dehumidifier for plastic granules - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To effectively dehumidify plastic granules in a feed tank and also to dehumidify a dehumidification tank of a drying device. SOLUTION: A feed tank 50 containing plastic granules interconnected by a guide tube, a drying apparatus 10 having two dehumidifying tanks 12, 13 and a circulation blower 20 having a cooler 22, a blowing means 32 and a heater. Reverse cleaning air supply device 30 having 33 and cooling means 34
And removing moisture in the feed tank by supplying a dry gas to the feed tank, and supplying a gas containing moisture to the drying device via the circulating blower to remove moisture from the gas. I do. The drying device has two dehumidification tanks and two switching valves, and supplies heating or cooling gas to the dehumidification tank in the reverse direction from the reverse cleaning air supply device.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a dehumidifying device for plastic granules, in particular, it is composed of elements such as a drying device, a circulating air blowing device, a reverse cleaning air supply device, a closed cooling effect, a preliminary use of a dehumidifying tank, a material in a feed tank. The present invention relates to a dehumidifying device capable of improving the dehumidifying effect of a device.

[0002]

[Problems to be solved by the invention]

 A main object of the present invention is to provide an improved plastic granule dehumidifier. The replacement valve, exhaust valve and switching valve should be properly connected and controlled / switched. In addition, a cooler will be provided in the reverse cleaning suction device that provides the reverse cleaning function so that it can be opened and closed at an appropriate time. By doing so, the cooling effect in the enclosed space will be enhanced, and the pre-use of the dehumidifier and the dehumidifying effect of the material in the feed tank will be improved.

[0003]

[Means for Solving the Problems]

 The above problem can be solved by the following means of the present invention. The invention of claim 1 is to provide a circulation tank having a drying tank having two feed tanks and two dehumidification tanks and a cooler connected to each other by a guide tube, and a reverse cleaning air supply having a blowing means and a heater and a cooling means. A feed gas is supplied to the feed tank to remove moisture in the feed tank, and a gas containing moisture is supplied to the drying device via the circulating blower to remove moisture from the gas. A dehumidifying device for removing plastic granules, wherein the drying device has two dehumidifying tanks and two switching valves, and one switching valve has one end of the two dehumidifying tanks, the feed tank, and the reverse cleaning. In the air supply device, the other switching valve is connected to the other end of the two dehumidifying tanks, the outlet end of the circulation blower, and an exhaust valve communicating with the outside air, One end switching valve that is connected to the outside air or the exhaust valve of Kigyaku direction cleaning air supply apparatus is connected, a structure having a control means for selectively controlling the conduction or blocking of the heater and the cold 却器.

[0004] The invention of claim 2 is characterized in that the two dehumidifying tanks are installed in a single storage tank.

[0005]

[Embodiment of the invention]

 In order to further clarify the purpose, features and effects of the present invention, specific embodiments will be described below with reference to the drawings. FIG. 1 is a structural explanatory view of the present invention. FIG. 2 is a diagram illustrating the operation of the low-temperature reverse cleaning performed in the closed system according to the present invention. FIG. 3 is a diagram for explaining the operation when the dehumidification tank of the drying device according to the present invention is replaced and used. FIG. 4 is a diagram for explaining the operation of low-temperature reverse cleaning in FIG. FIG. 5 is a diagram illustrating another embodiment of the drying apparatus according to the present invention. FIG. 6 is a diagram for explaining the operation of performing low-temperature reverse cleaning in a closed system in FIG. FIG. 7 is a view for explaining the operation when the dehumidification tank of the drying apparatus of another embodiment according to the present invention is used after being replaced. FIG. 8 is an explanatory diagram of the operation of performing low-temperature reverse cleaning in a closed system in FIG.

First, a description will be given with reference to FIG. The improved plastic granule dehumidifier provided by the present invention is composed of components such as a drying device 10, a circulating air blower 20, a reverse cleaning air supply device 30, and an exhaust valve 40. Further, a plastic feed tank 50 is connected. The drying device 10 includes two dehumidifying tanks 11 and 12 and two exchange valves 13 and 14. Guide tubes 131, 132, 133, and 134 for gas flow paths are connected to the exchange valves 13 and 14, one end of each of the two dehumidification tanks 11 and 12, the heater 51 in front of the feed tank 50, and the reverse cleaning. It is connected to the outlet end of the air supply device 30. On the other hand, the other exchange valve 14 has the other ends of the two dehumidification tanks 11 and 12 and the outlet of the circulation blower 20 via guide tubes 141, 142, 143 and 144 for gas passages, respectively. It is connected to an end valve and an exhaust valve 40 communicating with the outside air.

The circulating blower 20 includes a filter 21, a cooler 22, and a blower unit 23, and is connected in series via guide tubes 24 and 25. One end of the filter 21 is a gas inlet end of the circulation blower 20, and is connected to a gas outlet end 52 of the feed tank 50 via a guide tube 53. One end of the blower unit 23 is an outlet end of the circulation blower 20, and is connected to the exchange valve 14 via the guide tube 143.

[0008] The reverse cleaning air supply device 30 includes a filter 31, a blower unit 32, a heater 33, and a cooler 34, and is connected via appropriate guide tubes 351, 352, and 353. A switching valve 36 is provided at one end of the filter 31 so that it can communicate with an outside air or exhaust valve. Thereby, conduction or cutoff of the heater 33 and the cooler 34 is controlled.

In actual use of the present invention, first, the dry gas introduced into the feed tank 50 is turned into a high-temperature dry gas by the action of the heater 51. After the gas comes into contact with the plastic granules in the feed tank 50, it adsorbs moisture on the surface of the plastic granules and enters the circulation blower 20 via the gas outlet end 52 and the guide tube 53. The gas containing water whose temperature has been lowered by the operation of the filter 21, the cooler 22, and the sending unit 23 is guided to one dehumidification tank 11 of the drying device 10 by the guide tube 53, the exchange valve 14, and the guide tube 141. The moisture is quickly absorbed by the moisture-absorbing chemical components of the dehumidification tank 11 and a low-temperature dry gas comes out of the dehumidification tank 11. It is guided to the heater 51 via the guide tube 131, the exchange valve 13, and the guide tube 133. It is heated by the heater 51 and becomes a high-temperature dry gas. This drying gas then dries the plastic granules. By repeating this, the water content of the plastic granules gradually decreases.

At the same time as the drying of the above-mentioned plastic granules is progressing, the reverse cleaning air supply device 30 is simultaneously operated. The gas is introduced through the switching valve 36, introduced into the heater 33, and the cooler 34 is shut off. The gas is heated by the action of the filter 31, the blower unit 32, and the heater 33, and comes out of the reverse cleaning air supply device 30. Then, the water enters the other dehumidifying tank 12 via the guide tube 134, the exchange valve 13, and the guide tube 132. (The moisture content of the moisture absorbing chemical component in the dehumidifying tank is high. A high-temperature gas is introduced into the dehumidifying tank in a reverse direction to perform the cleaning action, and the moisture in the high-temperature gas state is moved in the dehumidifying tank 12. The gas is sent to the exhaust valve 40 via the guide tube 142, the exchange valve 14, and the guide tube 144. Since the exhaust valve 40 communicates with the outside air, the gas containing moisture is discharged to the outside air. The cycle is repeated, and the water in the dehumidification tank 12 gradually decreases and disappears.

When the dehumidifying tank 12 is in a dry state, whether or not the switching valve is automatically conductive can be switched as shown in FIG. At that time, the outlet end of the exhaust valve 40 is connected to the inlet end of the switching valve 36, the heater 33 is shut off, and the heater 33 is connected to the cooler. Then, the high-temperature dry gas coming out of the dehumidification tank 12 (the moisture content of the gas is not high because the dehumidification tank is dried) enters the switching valve 36, and the filter 31, the blower unit 32, and the cooler 34 A low temperature dry gas state is created by the action of. That is, low-temperature reverse cleaning is performed in the dehumidification tank 12. Then, as the same gas is repeated, it flows through a sealed guide tube and changes from the original high temperature state to the low temperature state, so it functions as a preliminary use.

Next, please refer to FIG. When the two dehumidifying tanks 11 and 12 of the drying device 10 each absorb a large amount of water and are in a low-temperature drying state, the introduction directions of the exchange valves 13 and 143 are changed, so that the feed tank 50 is removed. The high-temperature gas containing water comes out through the circulation blower 20, the guide tube 143, the exchange valve 14, and the guide tube 142, enters one tank 12 of the dehumidifier, and proceeds with the dehumidifying operation of the gas. Further, it is sent to the heater 51 via the guide tube 132, the guide tube 133, and the exchange valve 14. After heating, the plastic tank is dehumidified in the feed tank 50.

In the reverse cleaning operation, the heater 33 is turned on by the switching valve 36, and the gas is introduced while the cooler 34 is shut off. Under the action of the filter 31, the blowing unit 32, and the cooler 34, the air is sent to the dehumidification tank 11 via the high-temperature gas guide tube 134, the exchange valve 13, and the guide tube 131. The moisture-containing gas coming out there is guided to the exhaust valve 40 via the guide tube 141, the exchange valve 14, and the guide tube 144, and is discharged from the exhaust valve 40 to the outside air. By repeating such a method, the water in the dehumidifying tank 11 can be gradually discharged.

Please refer to FIG. When performing low-temperature reverse cleaning, the switching valve 36 and the exhaust valve 40 communicate with each other, and the heater 33 is shut off and the cooler 34 is turned on. Then, since the gas performs a closed low-temperature reverse cleaning operation in a guide tube passage such as the reverse cleaning air supply device 30, the dehumidifying tank 11, and the exhaust valve 40, the gas is useful for a preliminary use of lowering the internal temperature of the dehumidifying tank 11. .

As described above, the two dehumidifying tanks 11 and 12 of the drying device 10 are reciprocated and exchanged to act, and the plastic granules in the feed tank 50 can be dried to a predetermined degree of drying. Can be provided. Please refer to FIG. 5, FIG. 6, FIG. 7, and FIG. The operation processes such as dehumidification, drying, and high-temperature and low-temperature reverse cleaning are the same as those in the above-described steps, and a detailed description thereof will be omitted. However, the two dehumidification tanks 11 and 12 of the drying device 10 may be installed in a single storage tank 60. By doing so, the two dehumidifying tanks 11 and 12 originally arranged separately can not only greatly reduce the whole volume by the storage tank 60 but also reduce the space required. .

[0016]

[Effect of the invention]

 ADVANTAGE OF THE INVENTION According to the dehumidifier of this invention, the dehumidification of the material in a feed tank can be performed effectively, and the additional effect that a closed cooling device can be formed can be obtained. Further, the volume of the entire apparatus can be reduced, and the equipment can be downsized.

[Brief description of the drawings]

FIG. 1 is a structural explanatory view of the present invention.

FIG. 2 is a diagram illustrating the operation of low-temperature reverse cleaning performed in a closed system according to the present invention.

FIG. 3 is a diagram illustrating the operation of the dehumidifier according to the present invention when the dehumidifying tank is used after replacement.

FIG. 4 is a view for explaining the operation of low-temperature reverse cleaning in FIG. 3;

FIG. 5 is a view illustrating another embodiment of the dehumidifier according to the present invention.

FIG. 6 is a diagram illustrating an operation of performing low-temperature reverse cleaning in a closed system in FIG. 5;

FIG. 7 is a view for explaining an operation when the dehumidifying tank of the dehumidifying device of another embodiment according to the present invention is used after replacement.

FIG. 8 is an explanatory diagram of an operation of performing low-temperature reverse cleaning in a closed system in FIG. 7;

[Explanation of symbols]

4, 13 Switching valve 10 Drying device 11, 12 Dehumidifying tank 20 Circulating air blowing device 21 Filter device 22, 34 Cooler 23 Air blowing unit 24, 25, 53, 133, 134, 141, 142,
143, 351, 352, 353 Guide tube 30 Reverse cleaning air supply device 32 Blowing unit 33, 51 Heater 40 Exhaust valve 50 Feed tank 52 Gas outlet end 60 Storage tank

Claims (2)

[Utility model registration claims] 1. A feed tank interconnected by a guide tube, a dryer having two dehumidifying tanks, a circulating blower having a cooler, and a reverse cleaning air supply having a blower, a heater and a cooler. A plastic that removes moisture in the feed tank by supplying a dry gas to the feed tank, and supplies a gas containing moisture to the drying device through the circulating blower to remove moisture from the gas. A granule dehumidifying device, wherein the drying device has two dehumidifying tanks and two switching valves, and one switching valve is connected to one end of the two dehumidifying tanks, the feed tank, and the reverse cleaning air supply device. The other switching valve is connected to the other end of the two dehumidifying tanks, the outlet end of the circulating blower and an exhaust valve communicating with the outside air, and the reverse washing is performed. Is one end connected to the switch valve which is connected to the outside air or the exhaust valve of the air supply device, dehumidifier plastic granules having a control means for selectively controlling the conduction or blocking of the cooler and the heater. 2. The dehumidifying device for plastic granules according to claim 1, wherein said two dehumidifying tanks are installed in a single storage tank.