A pretreatment device for resin sand production

Abstract

This utility model relates to the field of resin sand production technology, specifically a resin sand production pretreatment device, including a support frame, a drying cylinder, a hot air assembly, and a drive assembly. The drying cylinder is inclinedly installed at the top of the support frame and has a cavity in the middle. A hopper for conveying sand into the cavity of the drying cylinder is provided at one end of the top of the drying cylinder during use. The drive assembly is located at one end of the support frame and extends into the inside of the drying cylinder. Multiple perforated plates are provided at one end of the drive assembly, located inside the drying cylinder, for moving the sand around the drive assembly within the drying cylinder during use. This utility model heats the inside of the drying cylinder through the hot air assembly and continuously supplies hot air into the drying cylinder. Simultaneously, the drive assembly drives the multiple perforated plates to move circumferentially, thereby causing the perforated plates to move and disperse the sand within the drying cylinder. The dispersed sand comes into direct contact with the hot air supplied by the hot air assembly, thus improving the drying efficiency and effect of the sand.

Description

Technical Field

[0001] This utility model relates to the field of resin sand production technology, specifically to a resin sand production pretreatment device. Background Technology

[0002] Before producing resin sand, the moisture in the resin sand material needs to be treated to avoid the moisture in the sand material consuming the curing agent (especially acid-cured resin sand), interfering with the resin curing reaction, and causing a decrease in the strength of the sand mold.

[0003] Chinese patent document CN222536264U discloses a pretreatment device for resin mixing, including a support and a connecting block. The upper surface of the support has a groove, and a mounting frame is fixed to the inner wall of the groove. The upper surface of the mounting frame has a mounting groove, and a filter screen is fixed to the inner wall of the mounting groove. A support plate is fixed to the lower surface of the support. The rear end of the support plate has a long groove, and the connecting block is inserted into the long groove. A movable plate is fixed to the rear end of the connecting block, and a drying and blowing device is installed on the upper surface of the movable plate.

[0004] However, when using the above method, the sand needs to be laid on the surface of the filter screen, and then the drying blower needs to be moved below the filter screen and hot air blown upwards during the movement so that the hot air can dry the sand through the vents and the filter screen, resulting in low drying efficiency of the sand. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a pretreatment device for resin sand production.

[0006] The technical solution of this utility model is: a pretreatment device for resin sand production, including a support frame, a drying cylinder, a hot air assembly, and a drive assembly; The drying cylinder is installed at an incline on the top of the support frame and has a cavity in the middle. A hopper is provided at the top of one end of the drying cylinder for conveying sand into the cavity of the drying cylinder during use. The drive assembly is located at one end of the support frame and extends to the inside of the drying cylinder. One end of the drive assembly and the inside of the drying cylinder are provided with multiple perforated plates for moving the sand material around the drive assembly in the drying cylinder during use. The hot air assembly is located at the bottom of one end of the support frame and extends into the inside of the drying cylinder at the side of the perforated plate.

[0007] Preferably, the drying cylinder includes a cylinder body and a discharge pipe; The cylinder is inclined and set at the top of the support frame, and the middle of the cylinder has a cavity; The discharge pipe is installed at the end of the cylinder and is connected to the cylinder.

[0008] Preferably, the hot air assembly includes an air duct and a hot air blower; The hot air blower is installed at the bottom of one end of the support frame; There is at least one air pipe, which is installed at one end of the hot air blower and extends to the inside of the cylinder.

[0009] Preferably, a connecting shell is provided on the side of the cylinder, and the air pipe is located inside the connecting shell.

[0010] Preferably, the length of the trachea is adapted to the inner side of the cylinder, and exhaust ports facing the inner side of the cylinder are arranged at equal intervals on the side of the trachea.

[0011] Preferably, the hopper includes a guide pipe and a material cylinder; The material cylinder is positioned above one end of the cylinder body; The guide pipe is installed at the bottom of the material cylinder and connected to the end face of the cylinder body.

[0012] Preferably, the drive assembly includes a lever and a motor; The rotating rod is rotatably installed in the middle of the inner side of the cylinder, and one end extends to the outer side of the cylinder; The motor is mounted on the top of one end of the support frame and is connected to the rotating rod drive.

[0013] Preferably, multiple orifice plates are arranged at equal angles and staggered on the rotating rod, with the sides of the orifice plates fitting and connected to the inner side of the cylinder.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This invention heats the inside of the drying cylinder using a hot air assembly and continuously supplies hot air into the drying cylinder. At the same time, a drive assembly moves multiple perforated plates in a circular motion, causing the perforated plates to move and disperse the sand material in the drying cylinder. The dispersed sand material comes into direct contact with the hot air supplied by the hot air assembly, thereby improving the drying efficiency and effect of the sand material. Attached Figure Description

[0015] Figure 1-2 All of these are perspective views of one embodiment of the present invention.

[0016] Figure 3 This is an exploded cross-sectional view of the cylindrical structure in one embodiment of the present invention.

[0017] Reference numerals in the attached drawings: 1. Support frame; 2. Cylinder; 3. Connecting shell; 4. Air pipe; 5. Rotating rod; 6. Motor; 7. Hot air blower; 8. Guide pipe; 9. Material cylinder; 10. Discharge pipe; 11. Exhaust port; 12. Orifice plate. Detailed Implementation

[0018] Example 1 like Figure 1-3As shown, the present invention proposes a resin sand production pretreatment device, which includes a support frame 1, a drying cylinder, a hot air assembly, and a drive assembly. The drying cylinder is installed at an incline on the top of the support frame 1 and has a cavity in the middle. A hopper is provided at the top of one end of the drying cylinder for conveying sand into the cavity of the drying cylinder during use. The drive assembly is located at one end of the support frame 1 and extends to the inside of the drying cylinder. One end of the drive assembly and located inside the drying cylinder is provided with a plurality of perforated plates 12 for moving the sand material around the drive assembly in the drying cylinder during use. The perforated plates 12 can also be screen plates during use. The hot air assembly is located at the bottom of one end of the support frame 1 and extends into the inside of the drying cylinder and is located on the side of the perforated plate 12. It is used to heat the inside of the drying cylinder during use and directly deliver hot air to the sand inside the drying cylinder, so that the sand drying efficiency and effect are better.

[0019] In this embodiment, the inner side of the drying cylinder is heated by a hot air assembly, and hot air is continuously supplied into the drying cylinder. At the same time, sand is continuously supplied into the drying cylinder through a hopper. A drive assembly drives multiple perforated plates 12 to move circumferentially inside the drying cylinder, causing the perforated plates 12 to move and fall along with the sand. Simultaneously, the sand falls through the through holes of the perforated plates 12, dispersing the sand in the drying cylinder. The dispersed sand comes into direct contact with the hot air supplied by the hot air assembly, thereby improving the drying efficiency and effect of the sand. The drying cylinder is installed at an incline on the top of the support frame 1, allowing the sand to move and disperse while moving towards the end of the drying cylinder and being discharged. This enables the sand to continue drying, improving the drying efficiency.

[0020] Example 2 like Figure 1-2 As shown, the pretreatment device for resin sand production proposed in this utility model differs from that in Embodiment 1 in that the drying cylinder includes a cylinder body 2 and a discharge pipe 10. The cylinder 2 is inclinedly installed at the top of the support frame 1. The middle part of the cylinder 2 has a cavity. During use, an exhaust port can be provided at the top of the cylinder 2 to discharge water vapor. This is an existing technology and is not shown in the figure. The discharge pipe 10 is installed at the end of the cylinder 2 and communicates with the cylinder 2. During use, a valve (not shown in the figure) can be installed at the end of the discharge pipe 10 for opening and closing.

[0021] In this embodiment, the cylinder 2 has a cavity in the middle and the discharge pipe 10 is connected to the cylinder 2 at the end of the cylinder 2, so that the cylinder 2 provides a relatively sealed working space for the sand. Hot air is delivered into the cylinder 2 through the hot air assembly and the hot air heats the cavity of the cylinder 2, so that the cavity of the cylinder 2 has a drying effect and improves the drying efficiency of the sand.

[0022] Example 3 like Figure 1-3 As shown, the pretreatment device for resin sand production proposed in this utility model differs from that in Embodiment 1 in that the hot air assembly includes an air pipe 4 and a hot air blower 7. The hot air blower 7 is installed at the bottom of one end of the support frame 1. The hot air blower 7 is an existing device. Temperature control can be performed during use. Temperature detectors can also be installed on the cylinder 2 to work with the hot air blower 7. There is at least one air pipe 4, which is installed at one end of the hot air blower 7 and extends to the inside of the cylinder 2.

[0023] In an optional embodiment, a connecting shell 3 is provided on the side of the cylinder 2, and the air pipe 4 is located inside the connecting shell 3. This is used to place the air pipe 4 inside the cylinder 2 during use and to avoid obstruction between the air pipe 4 and the orifice plate 12. In use, the ends of the two connecting shells 3 can be sealed to improve the sealing performance of the cylinder 2, which is not shown in the figure.

[0024] In an optional embodiment, the air pipe 4 is arranged to match the inner length of the cylinder 2, and exhaust ports 11 facing the inner side of the cylinder 2 are arranged at equal intervals on the side of the air pipe 4. This is used to convey the sand inside the cylinder 2 with hot air along the length of the cylinder 2 during use, so that the sand is continuously dried by hot air during the movement inside the cylinder 2, thereby improving the drying efficiency of the sand.

[0025] In this embodiment, the air pipe 4 is installed inside the cylinder 2 through the connecting shell 3, and the length of the air pipe 4 is adapted to the length of the cylinder 2. The hot air blower 7 delivers hot air to the air pipe 4, and the air pipe 4 delivers hot air into the cylinder 2 through multiple exhaust ports 11, which raises the temperature inside the cylinder 2. At the same time, the sand moving from one end to the other inside the cylinder 2 is conveyed with hot air to dry the sand, and the drying efficiency and effect of the sand are good.

[0026] Example 4 like Figure 1-3 As shown, the pretreatment device for resin sand production proposed in this utility model differs from that in Embodiment 1 in that the hopper includes a guide pipe 8 and a material cylinder 9. The material cylinder 9 is positioned above one end of the cylinder body 2; The guide pipe 8 is installed at the bottom of the material cylinder 9 and connected to the end face of the cylinder body 2.

[0027] In this embodiment, the material cylinder 9 is connected to the end face of the cylinder body 2 through the guide pipe 8, so that the sand inside the material cylinder 9 is transported from the end face of the cylinder body 2 to the inside of the cylinder body 2 through the guide pipe 8, so that the material cylinder 9 is placed vertically and avoids the material cylinder 9 from tilting.

[0028] Example 5 like Figure 1 and Figure 3 As shown, the pretreatment device for resin sand production proposed in this utility model differs from that in Embodiment 1 in that the drive assembly includes a rotating rod 5 and a motor 6. The rotating rod 5 is rotatably installed in the middle of the inner side of the cylinder 2, and one end extends to the outer side of the cylinder 2; The motor 6 is mounted on the top of one end of the support frame 1 and is connected to the rotating rod 5 for transmission. In use, the motor 6 can be connected to the rotating rod 5 through a reducer to avoid excessive torque output by the motor 6 and to prevent the rotating rod 5 from rotating too fast.

[0029] In an optional embodiment, multiple perforated plates 12 are arranged at equal angles and staggered on the rotating rod 5. The sides of the perforated plates 12 are fitted and connected to the inner side of the cylinder 2. In use, there can also be a gap between the perforated plates 12 and the inner wall of the cylinder 2 to avoid friction between the perforated plates 12 and the cylinder 2. The widths of the multiple perforated plates 12 are different to move sand at different heights, so as to prevent the other perforated plates 12 arranged at equal angles from being unable to move the sand after one perforated plate 12 has been moved.

[0030] In this embodiment, the motor 6 rotates the rotating rod 5 inside the cylinder 2, and the rotating rod 5 drives multiple perforated plates 12 to move around the circumference of the rotating rod 5. This causes the perforated plates 12 to move the sand material at the bottom of the inner side of the cylinder 2 around the rotating rod 5, and the sand material falls through the through holes on the surface of the perforated plates 12, thus dispersing the sand material inside the cylinder 2, increasing the contact area between the sand material and the hot air, and thereby improving the sand material drying efficiency.

[0031] In this invention, by starting the hot air blower 7 and delivering hot air to the air pipe 4, the air pipe 4 delivers hot air into the cylinder 2 through multiple exhaust ports 11, raising the temperature inside the cylinder 2. The sand material inside the material cylinder 9 is then conveyed from the end face of the cylinder 2 to the inside of the cylinder 2 through the guide pipe 8. Simultaneously, the motor 6 starts and drives the rotating rod 5 to rotate inside the cylinder 2, causing the rotating rod 5 to move multiple perforated plates 12 around the circumference of the rotating rod 5. This causes the perforated plates 12 to move and drop the sand material at the bottom of the inner side of the cylinder 2. Simultaneously, the sand material moves along the inclined direction of the cylinder 2 through the discharge pipe 10 and falls through the through holes on the surface of the perforated plates 12, dispersing the sand material inside the cylinder 2. The sand material then comes into direct contact with the hot air output from the exhaust ports 11 and is discharged through the discharge pipe 10, enabling continuous drying of the sand material and improving the drying efficiency and effect.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A resin sand production pre-treatment apparatus, characterized by, Includes a support frame (1), a drying cylinder, a hot air assembly, and a drive assembly; The drying cylinder is installed at an incline on the top of the support frame (1) and has a cavity in the middle. A hopper is provided at the top of one end of the drying cylinder for conveying sand into the cavity of the drying cylinder in the use state. The drive assembly is located at one end of the support frame (1) and extends to the inside of the drying cylinder. One end of the drive assembly and located inside the drying cylinder are provided with a plurality of perforated plates (12) for moving the sand material around the drive assembly in the drying cylinder during use. The hot air assembly is located at the bottom of one end of the support frame (1) and extends to the inside of the drying cylinder and is located at the side of the perforated plate (12).

2. A resin sand production pre-treatment apparatus according to claim 1, characterized in that, The drying cylinder includes a cylinder body (2) and a discharge pipe (10); The cylinder (2) is inclinedly set at the top of the support frame (1), and the middle part of the cylinder (2) has a cavity; The discharge pipe (10) is installed at the end of the cylinder (2) and is connected to the cylinder (2).

3. A resin sand production pre-treatment apparatus according to claim 2, characterised in that, The hot air assembly includes an air duct (4) and a hot air blower (7); The hot air blower (7) is installed at the bottom of one end of the support frame (1); The number of air pipes (4) is at least one, and the air pipe (4) is installed at one end of the hot air blower (7) and the end extends to the inside of the cylinder (2).

4. A resin sand production pre-treatment apparatus according to claim 3, characterised in that A connecting shell (3) is provided on the side of the cylinder (2), and the air pipe (4) is located inside the connecting shell (3).

5. A resin sand production pre-treatment apparatus according to claim 3, characterised in that, The trachea (4) is arranged to match the inner length of the cylinder (2), and exhaust ports (11) facing the inner side of the cylinder (2) are arranged at equal intervals on the side of the trachea (4).

6. A resin sand production pre-treatment apparatus according to claim 1, characterized in that, The hopper includes a guide pipe (8) and a material cylinder (9); The material cylinder (9) is positioned above one end of the cylinder body (2); The guide pipe (8) is installed at the bottom of the material cylinder (9) and connected to the end face of the cylinder body (2).

7. A resin sand production pre-treatment apparatus according to claim 2, wherein The drive assembly includes a rotary rod (5) and a motor (6); The rotating rod (5) is rotatably installed in the middle of the inner side of the cylinder (2), and one end extends to the outer side of the cylinder (2); The motor (6) is mounted on the top of one end of the support frame (1) and is connected to the rotating rod (5) for transmission.

8. A resin sand production pre-treatment apparatus according to claim 7, characterised in that, Multiple perforated plates (12) are arranged at equal angles and staggered on the rotating rod (5), and the sides of the perforated plates (12) are attached to the inner side of the cylinder (2).

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