Device for reducing moisture in beads for evanescent mode

Abstract

The utility model belongs to the technical field of evanescent mode production, and particularly relates to a device for reducing moisture in beads for an evanescent mode. Comprising a cylindrical drying box, the bottom of one side of the drying box communicates with a hot air supply channel, the upper portion of the drying box communicates with a steam exhaust channel corresponding to the hot air supply channel, and filter screens are arranged at communicating ports of the hot air supply channel and the steam exhaust channel with the drying box; the bottom end of the hot air supply channel communicates with an air outlet of the air blower, and electric heating fins are fixedly installed in the hot air supply channel. The beads in the drying box can be circularly dried under the action of hot air supplied by the hot air supply channel, so that the drying time and the drying effect of the beads can be effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of lost foam production, and particularly relates to a device for reducing the moisture content in the beads for lost foam. Background Art

[0002] Lost foam casting (also known as full-mold casting) is a full-mold casting that uses binder-free dry sand combined with vacuum pumping technology for a foam plastic mold. It is to bond and combine foam models similar to the size and shape of the casting into a model cluster. After brushing and drying a refractory coating, it is vibrated and molded in dry quartz sand, and poured under negative pressure. The model is vaporized, and the liquid metal occupies the position of the model, and a casting is formed after solidification and cooling. The lost foam (foam plastic mold) is mainly made of beads of raw materials such as EPS, EMB, and STMMA. These beads are likely to retain a large amount of moisture during the steam foaming process. When the produced lost foam comes into contact with molten metal during the casting process, a large amount of water vapor will be generated, resulting in a steam explosion and a backspray phenomenon, which will seriously affect the pouring quality. Therefore, in order to prevent the backspray phenomenon, generally, the beads need to be dried before making the lost foam, which requires a drying device. Although a Chinese utility model patent with the publication number CN215063244U discloses an EPS foam board foaming granule fluidized bed dryer that can dry EPS foam board foaming granules, since its drying method is to blow the foaming granules from one end to the other end, the drying time is short, resulting in the drying effect not being guaranteed. Therefore, there is an urgent need to design a device that can ensure the drying time and drying effect. Content of the Utility Model

[0003] In view of the problems existing in the above-mentioned prior art, the present utility model discloses a device for reducing the moisture content in the beads for lost foam, and specifically discloses the following technical solutions:

[0004] A device for reducing the moisture content in the beads for lost foam includes a cylindrical drying box. One side bottom of the drying box is communicated with a hot air supply channel, and the upper part of the drying box is communicated with a steam discharge channel corresponding to the hot air supply channel. Both the hot air supply channel and the steam discharge channel are vertically arranged and on the same straight line. Filters are provided at the connection ports of the hot air supply channel and the steam discharge channel with the drying box. The bottom end of the hot air supply channel is communicated with the air outlet of a blower, and electric heating fins are fixedly installed in the hot air supply channel. A feed inlet is opened on the end face of the drying box, and a feed hopper is provided at the feed inlet. A discharge door is hinged to one side bottom of the drying box away from the hot air supply channel. Both sides of the bottom end of the drying box are fixedly connected to a base through connecting plates, and an aggregate box is placed below the discharge door on the base.

[0005] Further, the bottom wall of the drying box on the side close to the hot air supply channel is set as a horizontal bottom wall, the side wall of the drying box on the side close to the hot air supply channel is set as a vertical side wall, and the discharge door is arranged at the connection of the arc-shaped side wall and the horizontal bottom wall of the drying box.

[0006] Further, a horizontal support plate is fixedly connected to the outside of the vertical side wall. The top of the end of the horizontal support plate away from the vertical side wall is fixedly connected with a vertical mounting plate. A hydraulic telescopic rod is fixedly connected to the side of the vertical mounting plate close to the vertical side wall. The end of the hydraulic telescopic rod away from the vertical mounting plate extends into the drying box through a through hole on the vertical side wall and is fixedly connected with a push plate. The bottom end of the push plate is in close contact with the upper surface of the horizontal bottom wall.

[0007] Further, the blower is fixedly installed on the base.

[0008] Further, the discharge door is an arc-shaped discharge door, and the radian of the discharge door is the same as that of the drying box.

[0009] Further, one end of the discharge door is hinged to the horizontal bottom wall of the drying box, and a first magnetic suction sheet is fixedly connected to the outside of the other end. A second magnetic suction sheet matched with the first magnetic suction sheet is arranged on the outer wall of the drying box.

[0010] Further, the aggregate box is an aggregate box with an open top.

[0011] Further, a humidity sensor is fixedly installed on the inner wall of the steam discharge channel.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The present utility model includes a cylindrical drying box. One side of the bottom of the drying box is communicated with a hot air supply channel, and the upper part of the drying box is communicated with a steam discharge channel corresponding to the hot air supply channel. Filter screens are arranged at the communication ports of the hot air supply channel and the steam discharge channel with the drying box. The beads in the drying box can be circulated and dried under the action of the hot air supplied by the hot air supply channel, so as to effectively ensure the drying time and drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view of the present utility model.

[0015] Figure 2 is the top view of the present utility model.

[0016] Figure 3 is the sectional view of the present utility model.

[0017] 1 - drying oven, 2 - hot air supply channel, 3 - steam discharge channel, 4 - filter screen, 5 - electric heating fins, 6 - feed hopper, 7 - connecting plate, 8 - discharging door, 9 - base, 10 - aggregate bin, 11 - horizontal support plate, 12 - vertical mounting plate, 13 - hydraulic telescopic rod, 14 - push plate, 15 - blower, 16 - first magnetic suction piece, 17 - humidity sensor. Detailed implementation manners

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Refer to Figures 1-3 , a device for reducing moisture in beads for lost foam casting, including a cylindrical drying oven 1. A hot air supply channel 2 is communicated with the bottom of one side of the drying oven 1. A steam discharge channel 3 corresponding to the hot air supply channel 2 is communicated with the upper part of the drying oven 1. Both the hot air supply channel 2 and the steam discharge channel 3 are vertically arranged and on the same straight line. Filter screens 4 are arranged at the communication ports of the hot air supply channel 2 and the steam discharge channel 3 with the drying oven 1, that is, a filter screen 4 is arranged at the communication port of the hot air supply channel 2 with the drying oven 1, and a filter screen 4 is also arranged at the communication port of the steam discharge channel 3 with the drying oven 1. The bottom end of the hot air supply channel 2 is communicated with the air outlet of a blower 15. Electric heating fins 5 are fixedly installed in the hot air supply channel 2. A feed port is opened on the end face of the drying oven 1, and a feed hopper 6 is arranged at the feed port. A discharging door 8 is hinged to the bottom of the side of the drying oven 1 away from the hot air supply channel 2. The two sides of the bottom end of the drying oven 1 are fixedly connected with a base 9 through a connecting plate 7. An aggregate bin 10 is placed below the discharging door 8 on the base 9.

[0020] The beads are added into the drying oven 1 through the feed hopper 6. And in order to prevent the beads from escaping from the drying oven 1 through the feed port during the drying process, a sealing cover can be arranged on the feed hopper 6. After the feeding is completed, the blower 15 is started. The blower 15 ventilates the drying oven 1 through the hot air supply channel 2. The air is heated by the electric heating fins 5 when flowing through the hot air supply channel 2, so as to achieve the purpose of blowing hot air into the drying oven 1. The beads are continuously circulated and flipped in the drying oven 1 under the action of the hot air at the outlet of the hot air supply channel 2, and thus are continuously dried. The steam generated in the drying oven 1 can be continuously discharged from the drying oven 1 through the steam discharge channel 3. When the drying work is completed, the discharging door 8 can be opened to put the dried beads into the aggregate bin 10.

[0021] In this embodiment, the bottom wall of the drying oven 1 on the side close to the hot air supply channel 2 is arranged as a horizontal bottom wall, and the side wall of the drying oven 1 on the side close to the hot air supply channel 2 is arranged as a vertical side wall. That is, the side wall of the drying oven 1 is composed of a 270° arc-shaped plate and an L-shaped plate. The feeding door 8 is arranged at the connection of the arc-shaped side wall and the horizontal bottom wall of the drying oven 1.

[0022] In this embodiment, a horizontal support plate 11 is fixedly connected to the outside of the vertical side wall. The top of one end of the horizontal support plate 11 far from the vertical side wall is fixedly connected with a vertical mounting plate 12. A hydraulic telescopic rod 13 is fixedly connected to the side of the vertical mounting plate 12 close to the vertical side wall. The end of the hydraulic telescopic rod 13 far from the vertical mounting plate 12 extends into the drying oven 1 through a through hole on the vertical side wall and is fixedly connected with a push plate 14. The bottom end of the push plate 14 is in close contact with the upper surface of the horizontal bottom wall. After the drying work is completed, the hydraulic telescopic rod 13 can be controlled to extend, so as to use the push plate 14 to push the beads in the drying oven 1 to the feeding door 8, and opening the feeding door 8 can put the beads into the aggregate box 10.

[0023] In this embodiment, the blower 15 is fixedly installed on the base 9.

[0024] In this embodiment, the feeding door 8 is an arc-shaped feeding door, and the radian of the feeding door 8 is the same as that of the drying oven 1.

[0025] In this embodiment, one end of the feeding door 8 is hinged to the horizontal bottom wall of the drying oven 1, and a first magnetic suction piece 16 is fixedly connected to the outside of the other end. A second magnetic suction piece matching with the first magnetic suction piece 16 is arranged on the outer wall of the drying oven 1. The suction force between the first magnetic suction piece 16 and the second magnetic suction piece can keep the feeding door 8 closed.

[0026] In this embodiment, the aggregate box 10 is an aggregate box with an open top, which is used to receive the beads discharged from the drying oven 1.

[0027] In this embodiment, a humidity sensor 17 is fixedly installed on the inner wall of the steam discharge channel 3, which is used to monitor the humidity of the air discharged from the steam discharge channel 3 in real time, so as to judge whether the beads have reached the drying requirement according to the humidity data.

[0028] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims

1. An apparatus for reducing the moisture content in the beads for lost foam casting, characterized in that, It includes a cylindrical drying box. One side bottom of the drying box is communicated with a hot air supply channel. The upper part of the drying box is communicated with a steam discharge channel corresponding to the hot air supply channel. Both the hot air supply channel and the steam discharge channel are vertically arranged and on the same straight line. Filter screens are provided at the connection ports of the hot air supply channel and the steam discharge channel with the drying box. The bottom end of the hot air supply channel is communicated with the air outlet of a blower. Electric heating fins are fixedly installed in the hot air supply channel. A feed inlet is opened on the end face of the drying box, and a feed hopper is provided at the feed inlet. A discharge door is hinged to the bottom of one side of the drying box away from the hot air supply channel. Both sides of the bottom end of the drying box are fixedly connected with a base through connecting plates, and an aggregate box is placed below the discharge door on the base.

2. The device for reducing moisture in the beads for lost foam according to claim 1, characterized in that, The bottom wall of the drying box on the side close to the hot air supply channel is a horizontal bottom wall, and the side wall of the drying box on the side close to the hot air supply channel is a vertical side wall. The discharge door is arranged at the connection of the arc-shaped side wall and the horizontal bottom wall of the drying box.

3. The device for reducing moisture in beads for lost foam according to claim 2, characterized in that, A horizontal support plate is also fixedly connected to the outside of the vertical side wall. The top of one end of the horizontal support plate away from the vertical side wall is fixedly connected with a vertical mounting plate. A hydraulic telescopic rod is fixedly connected to one side of the vertical mounting plate close to the vertical side wall. The end of the hydraulic telescopic rod away from the vertical mounting plate extends into the drying box through a through hole on the vertical side wall and is fixedly connected with a push plate. The bottom end of the push plate is closely attached to the upper surface of the horizontal bottom wall.

4. The device for reducing moisture in beads for lost foam according to claim 1, characterized in that, The blower is fixedly installed on the base.

5. The device for reducing moisture in beads for lost foam according to claim 1, characterized in that, The discharge door is an arc-shaped discharge door, and the radian of the discharge door is the same as that of the drying box.

6. The device for reducing moisture in beads for lost foam according to claim 5, characterized in that, One end of the discharge door is hinged to the horizontal bottom wall of the drying box, and a first magnetic attracting piece is fixedly connected to the outside of the other end. A second magnetic attracting piece is arranged on the outer wall of the drying box and is matched with the first magnetic attracting piece.

7. The device for reducing moisture in beads for lost foam according to claim 1, characterized in that, The aggregate box is an aggregate box with an open top.

8. The device for reducing moisture in the beads for lost foam according to claim 1, characterized in that, A humidity sensor is fixedly installed on the inner wall of the steam discharge channel.

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