Precoated sand drying device
By using a drying cylinder, auger sleeve, and stirring components in the coated sand drying device, combined with electric heating and mechanical turning, the problem of excessively long drying time for coated sand was solved, achieving efficient drying and quality improvement of coated sand.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINYI MAOYUAN NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-15
AI Technical Summary
The existing coated sand drying equipment has an excessively long drying time, resulting in low processing efficiency.
The system employs a combination structure of a drying drum and an auger sleeve, along with an electric heating wire and a stirring assembly. The auger blades agitate the coated sand and pass it through the filter holes of the feed drum to achieve uniform particle size. Combined with a motor drive shaft and scrapers, the filtration is accelerated, thus achieving uniform drying of the coated sand.
It shortens the drying time of coated sand, improves drying efficiency and the quality of coated sand.
Smart Images
Figure CN224238205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coated sand processing technology, specifically a drying device for coated sand. Background Technology
[0002] Coated sand is molding sand or core sand whose surface is coated with a solid resin film before molding. There are two coating processes: cold and hot. In the cold process, resin is dissolved in ethanol, and hexamethylenetetramine is added during sand mixing to coat the sand grains. The ethanol evaporates to obtain coated sand. In the hot process, the sand is preheated to a certain temperature, resin is added to melt it, and the mixture is stirred to coat the sand grains with resin. Hexamethylenetetramine aqueous solution and lubricant are added, and the sand is cooled, crushed, and sieved to obtain coated sand.
[0003] In the process of coating sand, whether it is a cold method or a hot method, the sand needs to be kept dry before coating in order to facilitate subsequent processing. Usually, an oven is used to dry the sand. However, the sand is in a static state when the oven is heating. After the surface sand is dried, the sand at the bottom is still wet. Therefore, it needs to continue to be baked, which leads to excessively long drying time and reduced drying efficiency. Utility Model Content
[0004] In order to solve the problem that some existing drying devices for coated sand take too long to dry, thus reducing the efficiency of the drying process, the purpose of this utility model is to provide a drying device for coated sand.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a drying device for coated sand, including a drying cylinder, a discharge valve fixedly installed at the bottom end of the drying cylinder, an auger sleeve fixedly installed inside the drying cylinder, electric heating wires fixedly installed inside the wall panels of both the drying cylinder and the auger sleeve, a power socket fixedly installed on the outside of the drying cylinder, and the power socket is linearly connected to the electric heating wires, a plurality of annularly distributed feed ports are opened at the bottom end of the auger sleeve, auger blades are rotatably installed inside the auger sleeve, a feeding assembly is installed at the top end of the drying cylinder, the feeding assembly includes a feeding cylinder, the feeding cylinder is detachably installed at the top end of the drying cylinder, and a plurality of annularly distributed filter holes are opened at the bottom edge of the drying cylinder.
[0006] Preferably, a drive shaft is rotatably installed inside the feed cylinder, and scrapers are fixedly installed on both sides of the drive shaft. The bottom end of the scrapers contacts the bottom end of the feed cylinder. A first motor is fixedly installed at the top of the feed cylinder, and the output end of the first motor is fixedly connected to the top of the drive shaft. A slot is opened at the top of the auger blade, and an insert is fixedly installed at the bottom of the drive shaft. The insert can be inserted into the slot.
[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0008] 1. In this utility model, the coated sand that needs to be dried can be put into the feed cylinder and filtered through the filter holes at the bottom of the feed cylinder, so that the particle size of the coated sand is relatively uniform, which is convenient for subsequent drying of the coated sand and also improves the quality of the coated sand. The feed cylinder is detachable, which makes it easy to pour out the remaining material in the feed cylinder and also makes it easy to clean the filter holes.
[0009] 2. In this utility model, during the drying process, the coated sand at the bottom of the drying cylinder can enter the auger sleeve through the feed port. The auger blades can be used to transport the coated sand at the bottom of the drying cylinder to the upper part through the auger sleeve, thereby turning the coated sand in the drying cylinder and reducing the drying time. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the internal structure of the drying cylinder of this utility model;
[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of the drying cylinder and auger sleeve of this utility model;
[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the feed cylinder of this utility model.
[0015] In the diagram: 1. Drying cylinder; 2. Discharge valve; 3. Feeding assembly; 301. Feeding cylinder; 302. First motor; 303. Filter hole; 304. Drive shaft; 3041. Insert block; 305. Scraper; 4. Stirring assembly; 401. Stirring paddle; 402. Second motor; 5. Screwdriver sleeve; 501. Feed inlet; 6. Screwdriver blade; 601. Slot; 7. Electric heating wire; 8. Power strip. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Example: Figure 1-4 As shown, this utility model provides a drying device for coated sand, including a drying cylinder 1. A discharge valve 2 is fixedly installed at the bottom end of the drying cylinder 1. An auger sleeve 5 is fixedly installed inside the drying cylinder 1. Electric heating wires 7 are fixedly installed inside the wall panels of both the drying cylinder 1 and the auger sleeve 5. A power socket 8 is fixedly installed on the outside of the drying cylinder 1, and the power socket 8 is linearly connected to the electric heating wires 7. Multiple feed inlets 501 are arranged in a ring at the bottom end of the auger sleeve 5. An auger blade 6 is rotatably installed inside the auger sleeve 5. A feeding assembly 3 is installed at the top end of the drying cylinder 1. The feeding assembly 3 includes a feeding cylinder 301, which is detachably installed at the top end of the drying cylinder 1 by bolts. Multiple filter holes 303 are arranged in a ring at the bottom edge of the drying cylinder 1, allowing the coated sand to be dried to be placed into the feeding cylinder 301 and pass through the bottom end of the feeding cylinder 301. The filter holes 303 ensure uniform particle size of the coated sand, facilitating subsequent drying and improving its quality. The detachable feed cylinder 301 allows for easy emptying of remaining material and cleaning of the filter holes 303. The filtered coated sand falls into the drying cylinder 1, which can be connected to an external power source via the power strip 8. This powers the heating wires 7 in the drying cylinder 1 and the auger sleeve 5, drying the coated sand in the drying cylinder 1. During drying, the coated sand at the bottom of the drying cylinder 1 enters the auger sleeve 5 through the feed inlet 501. The auger blades 6 transport the coated sand from the bottom of the drying cylinder 1 to the top via the auger sleeve 5, agitating the sand and reducing drying time. The dried material is discharged through the discharge valve 2.
[0018] The feed cylinder 301 has a conical interior. A drive shaft 304 is rotatably mounted inside the feed cylinder 301. Scrapers 305 are fixedly mounted on both sides of the drive shaft 304, and the bottom of the scrapers 305 contacts the bottom of the inside of the feed cylinder 301. A first motor 302 is fixedly mounted on the top of the feed cylinder 301, and the output end of the first motor 302 is fixedly connected to the top of the drive shaft 304. The first motor 302 drives the drive shaft 304 to rotate, and the drive shaft 304 drives the scrapers 305 to rotate inside the feed cylinder 301, which can accelerate the filtration of materials inside the feed cylinder 301.
[0019] The top of the auger blade 6 is provided with a slot 601, and the bottom of the drive shaft 304 is fixedly installed with a plug 3041, which can be inserted into the slot 601. Before installing the feed cylinder 301, the auger blade 6 can be rotated so that the slot 601 at the top of the auger blade 6 corresponds to the plug 3041 at the bottom of the drive shaft 304. After the feed cylinder 301 is installed into the drying cylinder 1, the plug 3041 at the bottom of the drive shaft 304 can be inserted into the slot 601 at the top of the auger blade 6, so that the drive shaft 304 drives the auger blade 6 to rotate.
[0020] Two symmetrically distributed stirring components 4 are installed inside the drying cylinder 1. Both stirring components 4 include stirring paddles 401, and the stirring paddles 401 are rotatably installed inside the drying cylinder 1. Two symmetrically distributed second motors 402 are fixedly installed at the top of the drying cylinder 1, and the output end of the second motor 402 is fixedly connected to the top of the corresponding stirring paddle 401. The second motors 402 can drive the stirring paddles 401 to rotate inside the drying cylinder 1, thereby turning over the coated sand inside the drying cylinder 1 and shortening the drying time of the coated sand.
[0021] Working Principle: In use, this invention first connects to an external power source via a power strip 8, energizing the heating wires 7 inside the drying cylinder 1 and the auger sleeve 5. Then, the coated sand to be dried is placed into the feed cylinder 301. The first motor 302 drives the drive shaft 304 to rotate, which in turn drives the scraper 305 to rotate within the feed cylinder 301. This accelerates the filtration of the material within the feed cylinder 301. Filtering through the filter holes 303 at the bottom of the feed cylinder 301 results in a more uniform particle size of the coated sand, facilitating subsequent drying and improving its quality. The detachable feed cylinder 301 allows for easy removal of any remaining material and facilitates the cleaning process. The filter holes 303 are cleaned, and the filtered coated sand falls into the drying cylinder 1 for drying. During the drying process, the coated sand at the bottom of the drying cylinder 1 can enter the auger sleeve 5 through the feed port 501. While the drive shaft 304 rotates, the drive shaft 304 drives the auger blades 6 to rotate. The auger blades 6 use the auger blades 6 to transport the coated sand at the bottom of the drying cylinder 1 to the upper part through the auger sleeve 5 to turn the coated sand in the drying cylinder 1. At the same time, the second motor 402 drives the stirring paddle 401 to rotate in the drying cylinder 1 to turn the coated sand in the drying cylinder 1, thereby reducing the drying time and improving the processing efficiency. The dried material can be discharged through the discharge valve 2.
[0022] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0023] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A drying apparatus for coated sand, comprising a drying cylinder (1), characterized in that: A discharge valve (2) is fixedly installed at the bottom end of the drying cylinder (1). An auger sleeve (5) is fixedly installed inside the drying cylinder (1). Electric heating wires (7) are fixedly installed inside the wall panels of both the drying cylinder (1) and the auger sleeve (5). A power socket (8) is fixedly installed on the outside of the drying cylinder (1), and the power socket (8) is linearly connected to the electric heating wires (7). A plurality of feed inlets (501) are arranged in a ring at the bottom end of the auger sleeve (5). An auger blade (6) is rotatably installed inside the auger sleeve (5). A feeding assembly (3) is installed at the top end of the drying cylinder (1). The feeding assembly (3) includes a feeding cylinder (301). The feeding cylinder (301) is detachably installed at the top end of the drying cylinder (1). A plurality of filter holes (303) are arranged in a ring at the bottom edge of the drying cylinder (1).
2. The drying apparatus for coated sand as described in claim 1, characterized in that, The feed cylinder (301) has a conical interior.
3. The drying apparatus for coated sand as described in claim 1, characterized in that, A drive shaft (304) is rotatably installed inside the feed cylinder (301). Scrapers (305) are fixedly installed on both sides of the drive shaft (304), and the bottom end of the scraper (305) is in contact with the bottom end of the inside of the feed cylinder (301).
4. The drying apparatus for coated sand as described in claim 1, characterized in that, The top end of the feed cylinder (301) is fixedly mounted with a first motor (302), and the output end of the first motor (302) is fixedly connected to the top end of the drive shaft (304).
5. The drying apparatus for coated sand as described in claim 1, characterized in that, The top of the auger blade (6) is provided with a slot (601).
6. The drying apparatus for coated sand as described in claim 3, characterized in that, The bottom end of the drive shaft (304) is fixedly mounted with a plug (3041), and the plug (3041) can be inserted into the slot (601).
7. The drying apparatus for coated sand as described in claim 1, characterized in that, The drying cylinder (1) is equipped with two symmetrically distributed stirring components (4), each of which includes a stirring paddle (401), and the stirring paddle (401) is rotatably installed inside the drying cylinder (1).
8. The drying apparatus for coated sand as described in claim 1, characterized in that, Two symmetrically distributed second motors (402) are fixedly installed at the top of the drying cylinder (1), and the output end of the second motor (402) is fixedly connected to the top of the corresponding stirring paddle (401).