Sand bin low-temperature heating device of resin sand casting used sand recovery system
By using a heating box to generate steam in the resin sand casting waste sand recycling system, combined with an extrusion plate design, the problem of waste sand agglomeration in low-temperature environments is solved, achieving all-round uniform heating, improving the dispersion and regeneration quality of waste sand, and reducing processing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI KINGDO-FORGE CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-01
AI Technical Summary
In the resin sand casting industry, old sand in the sand silo tends to clump together under low-temperature conditions, resulting in poor dispersion, increased processing costs, and difficulty in achieving uniform heating from all directions.
The heating chamber uses electric heating plates to heat water and generate steam, which circulates in the sand storage tank through steam holes, heating holes and air pipes. Combined with the design of extrusion plates and pressure springs, it achieves all-round uniform heating and dynamically adjusts the pressure in the sand storage tank.
It effectively prevents old sand from clumping, ensures the dispersion of sand particles, improves the quality of recycled sand, reduces processing costs, and ensures the safety and effectiveness of the heating process.
Smart Images
Figure CN224182003U_ABST
Abstract
Description
A low-temperature heating device for a sand storage silo in a resin sand casting waste sand recycling system Technical Field
[0001] This utility model relates to the field of sand storage heating technology, specifically a low-temperature heating device for a resin sand casting waste sand recycling system. Background Technology
[0002] In the resin sand casting industry, the recycling of used sand is of great significance for reducing production costs, minimizing resource waste, and protecting the environment. As the industry continues to develop, the requirements for the quality of recycled used sand are also increasing. However, in actual production, sand storage facilities are often in a low-temperature environment, which brings many challenges to the recycling of used sand.
[0003] In low-temperature environments, old sand in sand storage facilities is highly prone to clumping. Once clumped, the sand particles adhere to each other, severely disrupting their dispersion. This not only makes subsequent regeneration processes extremely difficult and increases processing costs, but also, while some heating devices for sand storage facilities exist on the market, generally suffer from uneven heating. Some heating devices only heat a portion of the sand storage area, failing to achieve comprehensive and uniform heating of the entire sand storage facility, thus failing to fundamentally solve the problem of old sand clumping. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a low-temperature heating device for the sand storage of a resin sand casting waste sand recycling system, which solves the problem that waste sand in the sand storage is prone to clumping in low-temperature environments.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A low-temperature heating device for a resin sand casting waste sand recycling system includes: a storage device, wherein a feed pipe is fixedly connected to the inner wall of the top of the storage device, and a discharge pipe is fixedly connected to the inner wall of the bottom of the storage device; and a heating mechanism, wherein the outer wall of the top of the heating mechanism is fixedly connected to the outer wall of the bottom of the storage device; the heating mechanism includes a heating box, wherein an electric heating plate is fixedly connected to the inner wall of the bottom of the heating box, a control panel is fixedly connected to the outer wall of the side of the heating box, a heat-conducting plate is fixedly connected to the outer wall of the control panel, a water injection pipe is fixedly connected to the inner wall of the heating box on the side away from the control panel, a steam hole is opened on the outer wall of the top of the heating box, and a heating pipe is fixedly connected to the inner wall of the top of the heating box.
[0009] Preferably, the outer wall of the heat-conducting plate on the side away from the control panel is fixedly connected to the outer wall of the electric heating plate. The interior of the heating tube is connected to the interior of the heating box. A plug is slidably connected to the inner wall of the top of the water injection pipe. When the plug on the water injection pipe is opened, an appropriate amount of water is injected into the water injection pipe. Then, the operator starts the heating mechanism through the control panel. After the heat-conducting plate is powered on, it generates heat and transfers it to the electric heating plate, causing the temperature inside the heating box to rise.
[0010] Preferably, the storage device includes a sand storage tank, an air filter plate is fixedly connected to the inner wall of the top of the sand storage tank, an exhaust port is opened on the outer wall of the top of the sand storage tank, a heating hole is opened on the inner wall of the side of the sand storage tank, a sliding rod is fixedly connected to the outer wall of the top of the sand storage tank, a pressing plate is slidably connected to the outer wall of the sliding rod, a pressure spring is fixedly connected to the outer wall of the top of the pressing plate, and an air outlet pipe is fixedly connected to the inner wall of the sand storage tank.
[0011] Preferably, the interior of the air duct is connected to the interior of the heating hole, the outer wall of the pressure spring on the side away from the extrusion plate is fixedly connected to the outer wall of the slide rod, the outer wall of the bottom of the extrusion plate is in contact with the outer wall of the top of the sand storage tank, the extrusion plate is set above the exhaust port, when there is pressure in the exhaust port, the extrusion plate slides upward along the slide rod under pressure, compressing the pressure spring, at which time the exhaust port is opened.
[0012] Preferably, the inner wall of the top of the sand storage silo is fixedly connected to the outer wall of the feed pipe, and the inner wall of the bottom of the sand storage silo is fixedly connected to the outer wall of the discharge pipe. The old sand enters the sand storage silo in the storage device through the feed pipe, and the old sand can also be discharged from the discharge pipe at the bottom of the sand storage silo by opening the discharge pipe.
[0013] Preferably, the outer wall of the top of the heating box is fixedly connected to the outer wall of the bottom of the sand storage tank, the interior of the steam hole is connected to the interior of the heating hole, the outer wall of the top of the heating pipe is fixedly connected to the inner wall of the top of the sand storage tank, and the inner wall of the heating pipe is fixedly connected to the outer wall of the air vent pipe. Water is heated by the electric heating plate in the heating box to generate steam. The steam enters the heating hole and the heating pipe in the sand storage tank through the steam hole, and then flows through the air vent pipe to the inner wall of the sand storage tank to heat the old sand.
[0014] (III) Beneficial Effects
[0015] This utility model provides a low-temperature heating device for a sand storage silo in a resin sand casting waste sand recycling system. It has the following beneficial effects:
[0016] (i) The heating mechanism heats the water in the heating box to generate steam through an electric heating plate. The steam circulates in the sand storage tank through steam holes, heating holes, air pipes and heating pipes, which can heat the old sand in an all-round and uniform way at low temperature. This heating method effectively avoids the problem of old sand clumping in the sand tank under low temperature environment, greatly ensures the dispersion of sand particles, provides a good foundation for the subsequent regeneration treatment of old sand, and significantly improves the quality of regenerated sand.
[0017] (II) The storage device, through the cooperation of the extrusion plate and the pressure spring, when the steam pressure in the heating tube changes, the extrusion plate will slide on the slide bar accordingly. By compressing or releasing the pressure spring, the opening and closing of the exhaust port is controlled. This design ingeniously realizes the dynamic adjustment of the pressure in the sand storage tank, timely discharges excess gas or water vapor generated during the heating process, avoids safety hazards caused by excessive pressure in the tank, and at the same time prevents cold air from backflowing in and affecting the heating effect and the quality of old sand. Attached Figure Description
[0018] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 is a partial cross-sectional structural schematic diagram of the present invention;
[0020] Figure 3 is a schematic diagram of the structure of the storage device of this utility model;
[0021] Figure 4 is a schematic diagram of the heating mechanism of this utility model.
[0022] In the diagram: 1. Storage device; 11. Sand storage silo; 12. Ventilation filter plate; 13. Exhaust port; 14. Heating hole; 15. Slide rod; 16. Extrusion plate; 17. Pressure spring; 18. Air pipe; 2. Feed pipe; 21. Discharge pipe; 3. Heating mechanism; 31. Heating box; 32. Electric heating plate; 33. Control panel; 34. Heat-conducting plate; 35. Water injection pipe; 36. Steam hole; 37. Heating tube. Detailed Implementation
[0023] 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.
[0024] Please refer to Figures 1-4. This utility model provides a technical solution: a low-temperature heating device for a sand storage silo in a resin sand casting waste sand recycling system, comprising: a storage device 1, with a feed pipe 2 fixedly connected to the inner wall of the top of the storage device 1, and a discharge pipe 21 fixedly connected to the inner wall of the bottom of the storage device 1; and further comprising: a heating mechanism 3, with the outer wall of the top of the heating mechanism 3 fixedly connected to the outer wall of the bottom of the storage device 1; the heating mechanism 3 includes a heating box 31, with an electric heating plate 32 fixedly connected to the inner wall of the bottom of the heating box 31, a control panel 33 fixedly connected to the outer wall of the side of the heating box 31, a heat-conducting plate 34 fixedly connected to the outer wall of the control panel 33, a water injection pipe 35 fixedly connected to the inner wall of the heating box 31 on the side away from the control panel 33, a steam hole 36 opened on the outer wall of the top of the heating box 31, and a heating pipe 37 fixedly connected to the inner wall of the top of the heating box 31.
[0025] The outer wall of the heat-conducting plate 34 on the side away from the control panel 33 is fixedly connected to the outer wall of the electric heating plate 32. The interior of the heating tube 37 is connected to the interior of the heating box 31. A plug is slidably connected to the inner wall of the top of the water injection pipe 35. Open the plug on the water injection pipe 35 and inject an appropriate amount of water into the water injection pipe 35. Then, the operator starts the heating mechanism 3 through the control panel 33. After the heat-conducting plate 34 is powered on, it generates heat and transfers it to the electric heating plate 32, causing the temperature inside the heating box 31 to rise.
[0026] The storage device 1 includes a sand storage tank 11. A vent filter plate 12 is fixedly connected to the inner wall of the top of the sand storage tank 11. An exhaust port 13 is opened on the outer wall of the top of the sand storage tank 11. A heating hole 14 is opened on the inner wall of the side of the sand storage tank 11. A slide rod 15 is fixedly connected to the outer wall of the top of the sand storage tank 11. A compression plate 16 is slidably connected to the outer wall of the slide rod 15. A pressure spring 17 is fixedly connected to the outer wall of the top of the compression plate 16. An air pipe 18 is fixedly connected to the inner wall of the sand storage tank 11.
[0027] The interior of the air pipe 18 is connected to the interior of the heating hole 14. The outer wall of the pressure spring 17 away from the extrusion plate 16 is fixedly connected to the outer wall of the slide rod 15. The outer wall of the bottom of the extrusion plate 16 is in contact with the outer wall of the top of the sand storage tank 11. The extrusion plate 16 is located above the exhaust port 13. When there is pressure in the exhaust port 13, the extrusion plate 16 is pressed and slides upward along the slide rod 15, compressing the pressure spring 17. At this time, the exhaust port 13 is opened.
[0028] The inner wall of the top of the sand storage silo 11 is fixedly connected to the outer wall of the feed pipe 2, and the inner wall of the bottom of the sand storage silo 11 is fixedly connected to the outer wall of the discharge pipe 21. The old sand enters the sand storage silo 11 in the storage device 1 through the feed pipe 2. When the discharge pipe 21 is opened, the old sand can also be discharged from the discharge pipe 21 at the bottom of the sand storage silo 11.
[0029] The outer wall of the top of the heating box 31 is fixedly connected to the outer wall of the bottom of the sand storage tank 11. The interior of the steam hole 36 is connected to the interior of the heating hole 14. The outer wall of the top of the heating pipe 37 is fixedly connected to the inner wall of the top of the sand storage tank 11. The inner wall of the heating pipe 37 is fixedly connected to the outer wall of the air outlet pipe 18. Water is heated by the electric heating plate 32 in the heating box 31 to generate steam. The steam enters the heating hole 14 and the heating pipe 37 in the sand storage tank 11 through the steam hole 36, and then flows through the air outlet pipe 18 on the inner wall of the sand storage tank 11 to heat the old sand.
[0030] When in use, the old sand enters the sand storage silo 11 in the storage device 1 through the feed pipe 2. The electric heating plate 32 in the heating mechanism 3 heats the water in the heating box 31 and heats the old sand in the sand storage silo 11 with steam to avoid the old sand in the sand silo from clumping due to low temperature environment, which would affect the dispersion of sand particles and the quality of recycled sand. The old sand can be discharged from the discharge pipe 21 at the bottom of the sand storage silo 11 by opening the discharge pipe 21.
[0031] First, open the plug on the water injection pipe 35 and inject an appropriate amount of water into the water injection pipe 35. Then, the operator starts the heating mechanism 3 through the control panel 33. After the heat conduction plate 34 is powered on, it generates heat and transfers it to the electric heating plate 32, which raises the temperature in the heating box 31. The water in the heating box 31 is heated by the electric heating plate 32 to generate steam. The steam enters the heating hole 14 in the sand storage tank 11 and the heating pipe 37 through the steam hole 36. Then, it flows through the air pipe 18 on the inner wall of the sand storage tank 11 to heat the old sand. At the same time, the heating pipe 37 is connected to the air pipe 18, so that the steam in the heating hole 14 enters the heating pipe 37 through the air pipe 18 and flows towards the exhaust port 13 through the heating pipe 37.
[0032] As the amount of steam in the heating tube 37 increases, the pressure increases. When the pressure in the heating tube 37 reaches a certain level, the extrusion plate 16 is subjected to the upward pressure of the steam and slides upward along the slide bar 15, compressing the pressure spring 17. At this time, the exhaust port 13 is opened to discharge excess gas or water vapor generated during the heating process. When the heating stops and there is no steam, the extrusion plate 16 closes the exhaust port 13 through the action of the pressure spring 17.
[0033] The ventilation filter plate 12 on the top of the sand storage silo 11 is mainly used to stabilize the pressure inside the sand storage silo 11 when sand is entering or leaving the sand storage silo 11, and to avoid excessive pressure or negative pressure inside the sand storage silo 11.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A low-temperature heating device for a sand storage silo in a resin sand casting waste sand recycling system, comprising: A storage device (1) is characterized in that it is further comprising: a heating mechanism (3), wherein the outer wall of the top of the heating mechanism (3) is fixedly connected to the outer wall of the bottom of the storage device (1); the heating mechanism (3) includes a heating box (31), wherein an electric heating plate (32) is fixedly connected to the inner wall of the bottom of the heating box (31), a control panel (33) is fixedly connected to the outer wall of the side of the heating box (31), a heat-conducting plate (34) is fixedly connected to the outer wall of the control panel (33), and a water injection pipe (35) is fixedly connected to the inner wall of the heating box (31) on the side away from the control panel (33). A steam hole (36) is provided on the outer wall of the top of the heating box (31), and a heating pipe (37) is fixedly connected to the inner wall of the top of the heating box (31); the storage device (1) includes a sand storage tank (11), a ventilation filter plate (12) is fixedly connected to the inner wall of the top of the sand storage tank (11), an exhaust port (13) is provided on the outer wall of the top of the sand storage tank (11), a heating hole (14) is provided on the inner wall of the side of the sand storage tank (11), a slide rod (15) is fixedly connected to the outer wall of the top of the sand storage tank (11), a pressing plate (16) is slidably connected to the outer wall of the slide rod (15), a pressure spring (17) is fixedly connected to the outer wall of the top of the pressing plate (16), and an air pipe (18) is fixedly connected to the inner wall of the sand storage tank (11).
2. The low-temperature heating device for a resin sand casting waste sand recycling system according to claim 1, characterized in that: The outer wall of the heat-conducting plate (34) on the side away from the control panel (33) is fixedly connected to the outer wall of the electric heating plate (32). The interior of the heating tube (37) is connected to the interior of the heating box (31). A plug is slidably connected to the inner wall of the top of the water injection pipe (35).
3. The low-temperature heating device for the sand storage of a resin sand casting waste sand recycling system according to claim 1, characterized in that: The interior of the air pipe (18) is connected to the interior of the heating hole (14). The outer wall of the pressure spring (17) on the side away from the extrusion plate (16) is fixedly connected to the outer wall of the slide rod (15). The outer wall of the bottom of the extrusion plate (16) is in contact with the outer wall of the top of the sand storage tank (11). The extrusion plate (16) is located above the exhaust port (13).
4. The low-temperature heating device for a resin sand casting waste sand recycling system according to claim 1, characterized in that: The inner wall of the top of the sand storage silo (11) is fixedly connected to the outer wall of the feed pipe (2), and the inner wall of the bottom of the sand storage silo (11) is fixedly connected to the outer wall of the discharge pipe (21).
5. The low-temperature heating device for a resin sand casting waste sand recycling system according to claim 1, characterized in that: The outer wall of the top of the heating box (31) is fixedly connected to the outer wall of the bottom of the sand storage tank (11), the interior of the steam hole (36) is connected to the interior of the heating hole (14), the outer wall of the top of the heating pipe (37) is fixedly connected to the inner wall of the top of the sand storage tank (11), and the inner wall of the heating pipe (37) is fixedly connected to the outer wall of the air outlet pipe (18).