Scalable resin sand production line

Abstract

This utility model relates to the field of resin sand production technology and discloses an expandable resin sand production line, including a crushing box. The crushing box has a feed inlet at its top, a liquid inlet pipe at its left end, and a drain pipe at its bottom. A drive motor is fixedly connected to the front end of the crushing box. Two rotating shafts are rotatably connected to the inner wall of the crushing box, each with a crushing roller fixedly connected to its outer wall. Gears are fixedly connected to the rear side of the outer wall of each rotating shaft. A second rotating shaft is rotatably connected to the inner wall of the crushing box, with multiple second stirring blades fixedly connected to its outer wall. In this utility model, after the crushed mold falls onto a filter screen, depending on whether old resin needs to be removed, a resin-dissolving solvent or water can be introduced through the liquid inlet pipe to treat the sand particles. The filter screen and drain pipe facilitate solid-liquid separation and impurity removal of the treated sand particles, making it suitable for processing different types of molds.

Description

Technical Field

[0001] This utility model relates to the field of resin sand production technology, and in particular to an expandable resin sand production line. Background Technology

[0002] Resin sand is a product formed by mixing raw sand with resin. It is mainly used to make molds or cores. Under the action of a curing agent, the resin undergoes an irreversible cross-linking reaction and solidifies, thereby giving the mold or core the necessary strength.

[0003] A search revealed a mini resin sand production line (publication number CN213079962U) comprising a base plate and a crushing box. The bottom surface of the crushing box is fixedly connected to the top surface of the base plate. Inside the crushing box, inclined blocks and a perforated plate are horizontally arranged from bottom to top. The bottom surface of the inclined blocks is fixedly connected to the bottom surface of the crushing box, and the side of the perforated plate is fixedly connected to the inner wall of the crushing box. Through the action of a fixed cylinder and spiral blades, a relatively large volume of resin sand entering the cylinder is lifted upwards and output to the top of the cylinder, where it is discharged from the outlet. It is then re-crushed to achieve the required size through the perforated plate. This mini resin sand production line, by centralizing the crushing device, cooling device, and dust removal device, not only has a simple and compact structure and a small footprint, but also greatly simplifies the process, making the process more streamlined and cost-effective while maintaining normal production.

[0004] Based on the aforementioned patent, by centrally setting up the crushing device, cooling device, and dust removal device together, the structure is not only simple and compact, but also occupies a small area and greatly simplifies the process. This makes the process more concise and saves costs while maintaining normal production. However, this device can only process and reproduce sand molds and sand cores that have not been hardened by chemical methods. For sand molds and sand cores that have been hardened by chemical methods, the hardening reaction of the binder is irreversible. It is also necessary to clean the resin and binder on their surface and remix them with resin. In response to this technical problem, this application proposes an scalable resin sand production line. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an expandable resin sand production line. After the crushed mold falls onto the filter screen, depending on whether old resin needs to be removed, solvent for dissolving the resin or water can be introduced through the inlet pipe to treat the sand particles. With the help of the filter screen and the drain pipe, the treated sand particles can be easily separated into solid and liquid and impurities can be removed. It is applicable to the processing of different types of molds.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An expandable resin sand production line includes a crushing box with a feed inlet at the top, a liquid inlet pipe at the left end, and a drain pipe at the bottom. A drive motor is fixedly connected to the front end of the crushing box. Two rotating shafts are rotatably connected to the inner wall of the crushing box, each with a crushing roller fixedly connected to its outer wall and a gear fixedly connected to the rear side of its outer wall. A second rotating shaft is rotatably connected to the inner wall of the crushing box, with multiple second stirring blades fixedly connected to its outer wall. A filter screen is fixedly connected to the inner wall of the crushing box. A mixing cylinder is connected to the right end of the crushing box via a conveying assembly, and a mixing component is installed on the inner wall of the mixing cylinder.

[0008] Furthermore, the front end of the first rotating shaft on the left is fixedly connected to the driving end of the first driving motor, and pulleys are fixedly connected to the rear side of the outer wall of both the first rotating shaft and the second rotating shaft on the right. The two pulleys are connected by the inner side of the belt.

[0009] Furthermore, an electric push rod is fixedly connected to the inner wall of the crushing box, and a baffle is fixedly connected to the drive end of the electric push rod, with the right end of the baffle tightly attached to the inner wall of the right end of the crushing box.

[0010] Furthermore, the conveying assembly includes a connecting pipe 1 passing through the right end of the crushing box, a screw conveyor fixedly connected to the right end of the connecting pipe 1, a connecting pipe 2 passing through the right end of the screw conveyor, and the right end of the connecting pipe 2 passing through the left end of the mixing cylinder.

[0011] Furthermore, a fixing ring is fixedly connected to the outer wall of the screw conveyor, the left end of the fixing ring is fixedly connected to the right end of the crushing box, and the right end of the fixing ring is fixedly connected to the left end of the mixing cylinder.

[0012] Furthermore, the mixing assembly includes a rotating shaft three rotatably connected to the inner wall of the mixing cylinder, a plurality of first stirring blades rotatably connected to the outer wall of the rotating shaft three, and a drive motor two fixedly connected to the top of the mixing cylinder.

[0013] Furthermore, the top end of the rotating shaft is fixedly connected to the driving end of the second drive motor, the right end of the mixing cylinder is provided with a feed pipe, and the bottom end of the mixing cylinder is provided with a discharge pipe.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, after the crushed mold falls onto the filter screen, depending on whether the old resin needs to be removed, the solvent for dissolving the resin or water can be introduced through the liquid inlet pipe to treat the sand particles. With the help of the filter screen and the liquid outlet pipe, the treated sand particles can be easily separated into solid and liquid and impurities can be removed. It can be applied to the treatment of different types of molds.

[0016] 2. In this utility model, the rotation of the shaft driven by the second drive motor can cause the first stirring blade to stir the resin and sand particles, so that the resin is evenly coated on the sand particles, improving the quality of the resin sand. At the same time, different types of resin can be directly transported through the feed pipe to form different types of resin sand, thus expanding the production range. Attached Figure Description

[0017] Figure 1 The three-dimensional scalable resin sand production line proposed in this utility model Figure 1 ;

[0018] Figure 2 The three-dimensional scalable resin sand production line proposed in this utility model Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the crushing box in the scalable resin sand production line proposed in this utility model.

[0020] Legend:

[0021] 1. Crushing box; 2. Liquid inlet pipe; 3. Drive motor one; 4. Feed inlet; 5. Drain pipe; 6. Connecting pipe one; 7. First stirring blade; 8. Fixing ring; 9. Screw conveyor; 10. Connecting pipe two; 11. Drive motor two; 12. Mixing cylinder; 13. Feed pipe; 14. Discharge pipe; 15. Rotating shaft one; 16. Gear; 17. Rotating shaft two; 18. Pulley; 19. Crushing roller; 20. Second stirring blade; 21. Filter screen; 22. Electric push rod; 23. Baffle; 24. Rotating shaft three. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-3This utility model provides an embodiment of an expandable resin sand production line, including a crushing box 1. The top of the crushing box 1 has a feed inlet 4, the left end of the crushing box 1 has a liquid inlet pipe 2, and the bottom end of the crushing box 1 has a drain pipe 5. A drive motor 3 is fixedly connected to the front end of the crushing box 1. Two rotating shafts 15 are rotatably connected to the inner wall of the crushing box 1. The front end of the left rotating shaft 15 is fixedly connected to the drive end of the drive motor 3. Both the right rotating shaft 15 and the second rotating shaft 17 have pulleys 18 fixedly connected to their outer rear sides. Each pulley 18 is connected to the inner side of the belt. Each shaft 15 is fixedly connected to a crushing roller 19. Each shaft 15 is fixedly connected to the rear side of the outer wall of the shaft 15. A shaft 2 17 is rotatably connected to the inner wall of the crushing box 1. Multiple second stirring blades 20 are fixedly connected to the outer wall of the shaft 2 17. A filter screen 21 is fixedly connected to the inner wall of the crushing box 1. An electric push rod 22 is fixedly connected to the inner wall of the crushing box 1. A baffle 23 is fixedly connected to the drive end of the electric push rod 22. The right end of the baffle 23 is close to the right inner wall of the crushing box 1.

[0024] Specifically, after the recycled resin sand mold is placed into the crushing box 1 through the feed port 4, it will be crushed by two crushing rollers 19 to increase its contact area with the solvent, which facilitates the subsequent removal of old resin from the surface. Then, the solvent can be introduced through the liquid inlet pipe 2 to soak the crushed mold inside the crushing box 1 to remove the old resin. The second stirring blade 20, driven by the rotating shaft 2 17, will continuously stir the solvent to improve the resin removal efficiency. The filter screen 21 can be used to separate the sand particles from the solvent after resin removal, and can also screen and remove impurities. After processing, the electric push rod 22 can control the baffle 23 to rise so that the connecting pipe 6 is exposed, allowing the sand particles to enter the next stage. If the recycled mold does not need to remove the old resin, clean water can be introduced into the crushing box 1 through the liquid inlet pipe 2 to clean the surface of the crushed mold and wash away the dust, and then directly sent into the connecting pipe 6.

[0025] A mixing cylinder 12 is connected to the right end of the crushing box 1 via a conveying assembly. The conveying assembly includes a connecting pipe 6 passing through the right end of the crushing box 1. A screw conveyor 9 is fixedly connected to the right end of the connecting pipe 6. A connecting pipe 10 passes through the right end of the screw conveyor 9. The right end of the connecting pipe 10 passes through the left end of the mixing cylinder 12. A fixing ring 8 is fixedly connected to the outer wall of the screw conveyor 9. The left end of the fixing ring 8 is fixedly connected to the right end of the crushing box 1. The right end of the fixing ring 8 is fixedly connected to the left end of the mixing cylinder 12. A mixing assembly is provided on the inner wall of the mixing cylinder 12. The mixing assembly includes a rotating shaft 24 rotatably connected to the inner wall of the mixing cylinder 12. Multiple first stirring blades 7 are rotatably connected to the outer wall of the rotating shaft 24. A drive motor 11 is fixedly connected to the top of the mixing cylinder 12. The top of the rotating shaft 24 is fixedly connected to the drive end of the drive motor 11. A feed pipe 13 passes through the right end of the mixing cylinder 12. A discharge pipe 14 passes through the bottom end of the mixing cylinder 12.

[0026] Specifically, the screw conveyor 9 can send the sand particles processed inside the crushing box 1 to the mixing cylinder 12. Then, according to the needs, different types of resin can be introduced through the feed pipe 13. With the help of the drive motor 11, the rotating shaft 24 is driven to rotate, so that the first stirring blade 7 stirs the sand particles and resin, thereby mixing the sand particles and resin to form resin sand, which is then discharged from the discharge pipe 14.

[0027] Working principle: During use, the recycled resin sand mold is placed into the crushing box 1 through the feed inlet 4. The drive motor 3 drives the left rotating shaft 15 to rotate. With the cooperation of two gears 16, the right rotating shaft 15 follows the left rotating shaft 15, thereby causing the two crushing rollers 19 to crush the mold. The crushed mold falls onto the filter screen 21 inside the crushing box 1. The valve on the liquid inlet pipe 2 is opened to introduce a resin-soluble solvent into the crushing box 1 to soak the fragments and dissolve and remove the resin. During this process, the second rotating shaft 17 is also driven by the pulley 18 and the belt to rotate with the first rotating shaft 15, causing the second stirring blade 20 to stir inside the crushing box 1. The resin dissolves quickly on the outer wall of the sand particles. After dissolution is complete, the valve on the drain pipe 5 is opened to discharge the solution inside the crushing box 1, leaving the sand particles on the filter screen 21. The fine powder mixed in the sand particles due to crushing will also be discharged with the solution. Then, the baffle 23 is driven to rise by the electric push rod 22, allowing the sand particles to enter the screw conveyor 9 through the connecting pipe 6. The screw conveyor 9 then sends the sand particles into the mixing cylinder 12. At this time, the valve on the feed pipe 13 can be opened to introduce new resin, and the drive motor 11 drives the rotating shaft 24 to rotate the first stirring blade 7 to mix the sand particles with the resin. After mixing is complete, the valve on the discharge pipe 14 is opened to discharge the sand particles for collection.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An expandable resin sand production line, including a crushing box (1), characterized in that: The crushing box (1) has a feed inlet (4) at the top, a liquid inlet pipe (2) at the left end, a drain pipe (5) at the bottom end, a drive motor (3) at the front end, two rotating shafts (15) at the inner wall of the crushing box (1), crushing rollers (19) at the outer wall of the rotating shafts (15), gears (16) at the rear side of the outer wall of the rotating shafts (15), a rotating shaft (17) at the inner wall, multiple second stirring blades (20) at the outer wall of the rotating shaft (17), a filter screen (21) at the inner wall, and a mixing cylinder (12) at the right end of the crushing box (1) via a conveying assembly. A mixing assembly is provided on the inner wall of the mixing cylinder (12).

2. The scalable resin sand production line according to claim 1, characterized in that: The front end of the first rotating shaft (15) on the left is fixedly connected to the drive end of the first driving motor (3). The rear side of the outer wall of the first rotating shaft (15) and the second rotating shaft (17) on the right are both fixedly connected with pulleys (18). The two pulleys (18) are connected to each other through the inner side of the belt.

3. The scalable resin sand production line according to claim 1, characterized in that: An electric push rod (22) is fixedly connected to the inner wall of the crushing box (1). A baffle (23) is fixedly connected to the driving end of the electric push rod (22). The right end of the baffle (23) is close to the inner wall of the right end of the crushing box (1).

4. The scalable resin sand production line according to claim 1, characterized in that: The conveying assembly includes a connecting pipe (6) that passes through the right end of the crushing box (1). A screw conveyor (9) is fixedly connected to the right end of the connecting pipe (6). A connecting pipe (10) passes through the right end of the screw conveyor (9). The right end of the connecting pipe (10) passes through the left end of the mixing cylinder (12).

5. The scalable resin sand production line according to claim 4, characterized in that: The screw conveyor (9) has a fixed ring (8) fixedly connected to its outer wall. The left end of the fixed ring (8) is fixedly connected to the right end of the crushing box (1), and the right end of the fixed ring (8) is fixedly connected to the left end of the mixing cylinder (12).

6. The scalable resin sand production line according to claim 1, characterized in that: The mixing assembly includes a rotating shaft three (24) rotatably connected to the inner wall of the mixing cylinder (12), a plurality of first stirring blades (7) rotatably connected to the outer wall of the rotating shaft three (24), and a drive motor two (11) fixedly connected to the top of the mixing cylinder (12).

7. The scalable resin sand production line according to claim 6, characterized in that: The top end of the rotating shaft three (24) is fixedly connected to the driving end of the driving motor two (11), the right end of the mixing cylinder (12) is provided with a feed pipe (13), and the bottom end of the mixing cylinder (12) is provided with a discharge pipe (14).

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