A Lost Foam Sand Recycling Cooling System
By designing a cooling sand silo and a water bath cooling drum system, the problems of low cooling efficiency and water splashing in the recycling of lost foam sand were solved, achieving rapid cooling of the molding sand and improvement of environmental hygiene.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGMEN XINJIAN MASCH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing process of recycling lost foam sand, the lack of effective cooling equipment leads to low work efficiency, and water stains are easily splashed out when water-cooled rollers are sprayed, affecting the hygiene of the working environment.
A system comprising a cooling sand chamber and a water bath cooling drum was designed. The cooling sand chamber discharges heat through a vent plate and a guide hood, while the water bath cooling drum utilizes spray pipes and a flow equalization plate for secondary cooling. The cooling efficiency is improved by combining negative pressure and a spiral lifter structure.
It enables rapid cooling of the molding sand, improves cooling efficiency, reduces water splashing, and improves the hygiene of the working environment.
Smart Images
Figure CN224508383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lost foam sand recycling technology, specifically to a lost foam sand recycling cooling system. Background Technology
[0002] Dry sand negative pressure lost foam casting technology is a precision molding casting technology. The lost foam sand is recycled by crushing and screening it in a sand shaker, cooling it, and then re-entering it into the mold. The existing sand silos do not have a cooling function. The existing cooling equipment is completely used for cooling, which has low work efficiency. When water is sprayed on the surface of the existing water-cooled roller, water stains are easy to splash out or be carried to the ground, causing waste and affecting the hygiene of the working environment. Utility Model Content
[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a cooling system for the recycling of lost foam sand.
[0004] This utility model includes a connected cooling sand silo and a water bath cooling drum. The cooling sand silo includes a silo body, a feed pipe is provided at the center of the top of the silo body, a dispersion plate is movably connected to the silo body below the feed pipe, a set of venting plates are provided on the four side walls of the silo body, and a flow guide is provided on the silo body outside the venting plates, and the flow guides are connected to each other through an exhaust pipe.
[0005] The water bath cooling drum includes a drum, a drum support, a drum drive motor, a spray pipe, and a water tank. The drum drive motor is mounted on the drum support and drives the drum to roll on the drum support. Multiple sets of lifting plates are installed inside the drum. The water tank is located below the drum, and the spray pipe is located above one side of the drum. The spray pipe is connected to the water tank through a pump. A flow equalization plate is provided at the bottom of the spray pipe, and there is a gap between the flow equalization plate and the rolling surface of the drum.
[0006] The bottom of the silo is a four-sided pyramidal structure, and a discharge pipe extending into the feed end of the roller is provided on one side of the four-sided pyramidal structure. The top of the silo is detachably connected to a cover, and the feed pipe is located on the cover.
[0007] The dispersion plate is a conical or square pyramidal structure, and it is suspended inside the silo by a set of ropes.
[0008] The four sides of the silo are provided with a set of ventilation plate mounting holes. The ventilation plates can be detachably installed in the corresponding ventilation plate mounting holes. The ventilation holes of the ventilation plates are grid holes with the openings tilted upwards.
[0009] The bottom of the deflector and the side that fits against the hull are open. The top of the deflector is a trapezoidal structure that is high in the middle and low at both ends. An exhaust port is provided at the top of the trapezoidal structure. The exhaust pipe is connected to the corresponding exhaust port of the deflector through a set of branch pipes.
[0010] Both ends of the drum are conical cylinders, and a set of spiral guide vanes are installed inside the conical cylinder at the discharge end.
[0011] The drum support base is equipped with a support roller, the drum is equipped with an annular guide rail that cooperates with the support roller, the drum is equipped with a toothed disc, and the drum drive motor is equipped with a drive gear that cooperates with the toothed disc; the lifting plates are inclined, and multiple sets of lifting plates are spirally distributed inside the drum.
[0012] The spray pipe is mounted on the roller support seat via a support frame. Multiple water outlets are provided at the bottom of the spray pipe along its length. The flow equalization plate is located on one side of the water outlets and can be adjusted and installed on the spray pipe.
[0013] The flow equalization plate has connecting sleeves at both ends, and can be rotatably installed on the spray pipe through the connecting sleeves. The support frame is equipped with a pair of flow equalization plate adjustment support rods.
[0014] The advantages of this invention are: the cooling sand silo can initially cool and lower the temperature of the molding sand during storage, and the initially cooled molding sand then enters the water bath cooling drum for secondary cooling, reaching the temperature for reuse and improving cooling efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the cooling sand silo structure.
[0017] Figure 3 This is a schematic diagram of the internal structure of the cooling sand silo.
[0018] Figure 4 This is a schematic diagram of the water bath cooling drum structure.
[0019] Figure 5 This is a schematic diagram of the internal structure of the water bath cooling drum.
[0020] Figure 6 This is a schematic diagram of the flow equalization plate connection structure. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0023] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] As shown in the attached diagram, this utility model includes a connected cooling sand tank 3 and a water bath cooling drum 4.
[0026] After the molding sand is crushed, it enters the cooling sand silo 3 for storage and cooling. Then, it enters the water bath cooling drum 4 in batches for secondary cooling and is discharged for reuse. Through two cooling processes, the molding sand can quickly reach the temperature for recycling.
[0027] Structure and working principle of cooling sand chamber 3:
[0028] The cooling sand silo 3 includes a silo body 16. A feed pipe is provided at the center of the top of the silo body 16. A dispersion plate 17 is movably connected to the silo body 16 below the feed pipe. A set of ventilating plates 20 are provided on the four side walls of the silo body 16. A guide hood 18 is provided on the silo body 16 outside the ventilating plate 20, and the guide hoods 18 are connected to each other through an exhaust pipe 19.
[0029] After the sand is removed, it enters the hopper 16 through the feed pipe. When it falls, it is dispersed by the dispersion plate 17. When it falls evenly, it is easy to dissipate the heat quickly. Then it enters the guide hood 18 through the vent plate 20. The guide hood 18 exhausts the hot air to the outside through the exhaust pipe 19. The exhaust pipe 19 extends to the outside and can form a chimney effect, which makes negative pressure form inside the guide hood 18, thereby taking away the heat.
[0030] Furthermore, the bottom of the bin body 16 is a four-sided pyramidal structure, and a discharge pipe extending into the feed end of the roller 30 is provided on one side of the four-sided pyramidal structure. The top of the bin body 16 is detachably connected to a cover, and the feed pipe is located on the cover.
[0031] Preferably, the dispersion plate 17 is a conical or quadrangular pyramidal structure, which can quickly disperse the sand particles in all directions. The dispersion plate 17 is suspended inside the silo body 16 by a set of pull ropes. The dispersion plate 17 is a movable part and will shake when impacted by sand particles. The sand particles fall onto the bottom of the silo body 16 through the dispersion plate 17 and are spread more evenly.
[0032] Furthermore, a set of ventilation plate mounting holes are provided on the four sides of the silo body 16. The ventilation plate 20 can be detachably installed in the corresponding ventilation plate mounting hole. The air holes of the ventilation plate 20 are grid holes with the openings tilted upwards to prevent sand particles from splashing out from the grid holes.
[0033] Preferably, the bottom of the flow guide 18 and the side that fits against the compartment 16 are open, the top of the flow guide 18 is a trapezoidal structure with a high middle and low ends, and an exhaust port is provided at the top of the trapezoidal structure. The exhaust pipe 19 is connected to the corresponding exhaust port of the flow guide 18 through a set of branch pipes.
[0034] Structure and working principle of water bath cooling drum 4:
[0035] The water bath cooling drum 4 includes a drum 30, a drum support 31, a drum drive motor 32, a spray pipe 33, and a water tank 34. The drum drive motor 32 is mounted on the drum support 31 and drives the drum 30 to roll on the drum support 31. Multiple sets of lifting plates 40 are provided inside the drum 30. The water tank 34 is located below the drum 30. The spray pipe 33 is located above one side of the drum 30. The spray pipe 33 is connected to the water tank 34 through a pump. A flow equalization plate 35 is provided at the bottom of the spray pipe 33. A gap is provided between the flow equalization plate 35 and the rolling surface of the drum 30.
[0036] The sand particles in the cooling sand silo 3 enter the drum 30. When the drum 30 rotates, the lifting plate 40 turns the sand particles and conveys them to the discharge end. The spray pipe 33 sprays the water in the water tank 34 evenly onto the flow equalization plate 35. The water flows down from the flow equalization plate 35 to form a water curtain that evenly covers the surface of the drum 30, thereby cooling it and removing the heat from the sand particles inside the drum 30.
[0037] The flow equalization plate 35 forms a slide, which allows water to be spread smoothly onto the roller 30, preventing water from the spray pipe 33 from directly impacting the roller 30 and causing water splashing.
[0038] Preferably, both ends of the drum 30 are conical cylinders, and a set of spiral guide vanes 38 are provided inside the conical cylinder at the discharge end. The spiral guide vanes 38 facilitate the output of sand particles inside the drum 30.
[0039] Furthermore, the drum support 31 is provided with a support roller, the drum 30 is provided with an annular guide rail that cooperates with the support roller, the drum 30 is provided with a toothed disc, and the drum drive motor 32 is provided with a drive gear that cooperates with the toothed disc; the lifting plate 40 is inclined, and multiple sets of lifting plates 40 are spirally distributed inside the drum 30.
[0040] There are two annular guide rails, located at both ends of the drum 30. The flow equalization plate 35 is located between the two annular guide rails. In this design, a baffle plate is provided on the inner side of the annular guide rails to effectively prevent water stains on the surface of the drum 30 from overflowing from the annular guide rails to the outside. The lifting plates 40 are inclined, and multiple sets of lifting plates 40 are spirally distributed inside the drum 30. When the sand particles flow in the inner drum 30, they are sequentially output to the discharge end by the lifting plates 40.
[0041] Furthermore, the spray pipe 33 is mounted on the roller support 31 via a support frame. The bottom of the spray pipe 33 has multiple water outlets along its length. The flow equalization plate 35 is located on one side of the water outlets and can be adjusted and mounted on the spray pipe 33.
[0042] Furthermore, the flow equalization plate 35 is provided with connecting sleeves 36 at both ends, and can be rotatably installed on the spray pipe 33 through the connecting sleeves 36. A pair of flow equalization plate adjustment support rods 37 are provided on the support frame.
[0043] The tilt angle of the flow equalization plate 35 is adjusted by adjusting the support rod 37 of the flow equalization plate, and the gap between the flow equalization plate 35 and the roller 30 is controlled.
[0044] A pair of flow equalization plate adjustment support rods 37 are rotatably mounted on the support frame. The rear side of the flow equalization plate 35 is provided with a set of positioning grooves that cooperate with the flow equalization plate adjustment support rods 37. The tilt angle of the flow equalization plate 35 can be controlled by adjusting the position of the flow equalization plate adjustment support rods 37 in different positioning grooves.
Claims
1. A lost foam sand recycling cooling system characterized by It includes a connected cooling sand silo (3) and a water bath cooling drum (4). The cooling sand silo (3) includes a silo body (16). A feed pipe is provided at the center of the top of the silo body (16). A dispersion plate (17) is movably connected to the silo body (16) below the feed pipe. A set of air vents (20) is provided on the four sides of the silo body (16). A guide hood (18) is provided on the silo body (16) outside the air vents (20). The guide hoods (18) are connected to each other through an exhaust pipe (19). The water bath cooling drum (4) includes a drum (30), a drum support (31), a drum drive motor (32), a spray pipe (33), and a water tank (34). The drum drive motor (32) is installed on the drum support (31) and drives the drum (30) to roll on the drum support (31). Multiple sets of lifting plates (40) are provided inside the drum (30). The water tank (34) is located below the drum (30). The spray pipe (33) is located above one side of the drum (30). The spray pipe (33) is connected to the water tank (34) through a pump. A flow equalization plate (35) is provided at the bottom of the spray pipe (33). A gap is provided between the flow equalization plate (35) and the rolling surface of the drum (30).
2. The lost foam sand recycling and cooling system of claim 1, wherein The bottom of the bin (16) is a four-sided pyramidal structure, and a discharge pipe extending into the feed end of the roller (30) is provided on one side of the four-sided pyramidal structure. The top of the bin (16) is detachably connected to a cover, and the feed pipe is located on the cover.
3. The lost foam sand recycling and cooling system of claim 1, wherein The dispersion plate (17) is a conical or quadrangular pyramidal structure, and the dispersion plate (17) is suspended inside the silo body (16) by a set of ropes.
4. The lost foam sand recycling and cooling system of claim 1, wherein The four sides of the silo body (16) are provided with a set of ventilation plate mounting holes. The ventilation plate (20) can be detachably installed in the corresponding ventilation plate mounting hole. The air holes of the ventilation plate (20) are grid holes with the opening tilted upward.
5. The lost foam sand recycling and cooling system of claim 1, wherein The bottom of the deflector (18) and the side that is in contact with the compartment (16) are open. The top of the deflector (18) is a trapezoidal structure with a high middle and low ends, and an exhaust port is provided at the top of the trapezoidal structure. The exhaust pipe (19) is connected to the exhaust port of the corresponding deflector (18) through a set of branch pipes.
6. The lost foam sand recycling cooling system according to claim 1, characterized in that... Both ends of the roller (30) are conical cylinders, and a set of spiral guide vanes (38) are provided inside the conical cylinder at the discharge end.
7. The lost foam sand recycling and cooling system of claim 1, wherein The roller support base (31) is provided with a support roller, the roller (30) is provided with an annular guide rail that cooperates with the support roller, the roller (30) is provided with a toothed disc, and the roller drive motor (32) is provided with a drive gear that cooperates with the toothed disc; the lifting plate (40) is inclined, and multiple sets of lifting plates (40) are spirally distributed inside the roller (30).
8. The lost foam sand recycling and cooling system of claim 1, wherein The spray pipe (33) is mounted on the roller support seat (31) by a support frame. The bottom of the spray pipe (33) has multiple water outlets along its length. The flow equalization plate (35) is located on one side of the water outlets. The flow equalization plate (35) is adjustable and mounted on the spray pipe (33).
9. The lost foam sand recycling and cooling system of claim 8, wherein The flow equalization plate (35) is provided with connecting sleeves (36) at both ends, and can be rotatably installed on the spray pipe (33) through the connecting sleeves (36). A pair of flow equalization plate adjustment support rods (37) are provided on the support frame.