Sand temperature regulator

Abstract

This utility model relates to the technical field of sand temperature regulators, specifically to a sand temperature regulator, including a cooling box. The lower part of the cooling box is connected to a regulating valve housing. A horizontally sliding lower regulating plate is provided inside the regulating valve housing, with the sliding direction of the lower regulating plate along a horizontal transverse direction. The upper surface of the lower regulating plate abuts against the bottom of the cooling box. The bottom of the cooling box has several sand drop holes, and the lower regulating plate has several sand discharge holes arranged in the same manner as the sand drop holes. A pull rod is slidably connected to the side of the regulating valve housing, with its axial direction along a horizontal transverse direction. One end of the pull rod passes through the regulating valve housing and is hinged to the lower regulating plate. The other end of the pull rod is hinged to a telescopic drive mechanism, which can drive the pull rod to move horizontally. The two ends of the pull rod are square, and the middle part is cylindrical. This utility model can reduce the molding sand carried out when the pull rod is pushed and pulled, thus reducing the molding sand leakage rate.

Description

Technical Field

[0001] This utility model relates to the technical field of sand temperature regulators, specifically to a sand temperature regulator. Background Technology

[0002] In the foundry industry, highly automated casting production lines have been widely adopted, supporting the efficient production of large batches of castings. In this production model, molding sand, as the core molding material, directly impacts production economy and continuity through its recycling efficiency. However, due to the short turnover cycle of molding sand during recycling and its susceptibility to residual heat from the casting process, its temperature can rise rapidly, leading to the "hot sand problem." Excessively high sand temperatures damage the bonding properties and permeability of the molding sand, resulting in defects such as porosity and sand holes in the castings. Furthermore, it interferes with the stable operation of molding and core-making processes, severely hindering the improvement of casting quality. Therefore, precise temperature control of molding sand on the casting production line has become a crucial technical aspect for ensuring casting quality.

[0003] Currently, sand temperature regulators are widely used in the industry as the core equipment for cooling molding sand. However, in traditional sand temperature regulators, when the regulating valve is controlled by a cylinder, the connection between the connecting rod and the regulating valve body is prone to molding sand leakage due to an unreasonable sealing structure design. Overflowing molding sand not only directly wastes raw materials and increases production costs, but also adheres to the surface of transmission components during equipment operation, accelerating the wear of critical parts such as bearings and gears, and shortening the equipment's lifespan. Furthermore, leaked molding sand may enter the gaps in the electrical control system, causing short circuits, jamming, and other malfunctions, and in severe cases, even leading to production line shutdowns and significant production losses. Utility Model Content

[0004] To address the technical problem in traditional sand temperature regulators where the sealing structure at the connection between the connecting rod and the regulating valve body is unreasonable, leading to easy leakage of molding sand at the connection when the regulating valve is controlled by a cylinder, this utility model provides a sand temperature regulator.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A sand temperature regulator includes a cooling box, the lower part of which is connected to a regulating valve housing. A horizontally sliding lower regulating plate is provided inside the regulating valve housing, with the sliding direction of the lower regulating plate along a horizontal transverse direction. The upper surface of the lower regulating plate abuts against the bottom of the cooling box. The bottom of the cooling box has several sand-dropping holes, and the lower regulating plate has several sand-discharging holes arranged in the same manner as the sand-dropping holes. A pull rod is slidably connected to the side of the regulating valve housing, with the axial direction of the pull rod along a horizontal transverse direction. One end of the pull rod passes through the regulating valve housing and is hinged to the lower regulating plate. The other end of the pull rod is hinged to a telescopic drive mechanism, which can drive the pull rod to move along a horizontal transverse direction. The two ends of the pull rod are square, and the middle part is cylindrical.

[0006] With the above structural design, the two ends of the pull rod in this invention are square, allowing for stable connection with the lower adjustment plate and the telescopic drive mechanism, preventing relative rotation from affecting transmission accuracy. The middle part is cylindrical, providing better sealing and reducing the amount of molding sand carried out during the push-pull of the pull rod, thus lowering the molding sand leakage rate, reducing molding sand waste, minimizing wear on equipment components and interference with the electrical control system, and ensuring the stability of equipment operation. This invention uses the telescopic drive mechanism to drive the pull rod, causing the lower adjustment plate to slide horizontally. This changes the overlap between the sand discharge hole on the lower adjustment plate and the sand drop hole at the bottom of the cooling box, thereby precisely adjusting the amount of molding sand falling to adapt to the different production conditions and ensuring stable molding sand cooling effect.

[0007] As a preferred implementation of a sand temperature regulator, a cover plate is provided on the outside of the regulating valve housing, and a rubber plate is provided on the side of the cover plate close to the regulating valve housing. The cover plate and the rubber plate are attached and connected. The middle part of the pull rod slides through the rubber plate and the cover plate, and the outer peripheral surface of the middle part of the pull rod is in a sealed sliding connection with the rubber plate.

[0008] With the above structural design, the cover plate on the outside of the regulating valve housing is attached to the rubber plate, and the middle part of the pull rod slides through the two and is slidably connected to the rubber plate. The rubber plate is elastic and can fit tightly against the outer circumference of the middle part of the pull rod, effectively preventing molding sand from overflowing from the gap between the pull rod and the regulating valve housing, further solving the molding sand leakage problem, reducing molding sand overflow, and preventing molding sand from adhering to the outside of the equipment and surrounding parts. This helps to keep the equipment clean, reduce the risk of equipment failure caused by molding sand contamination, and extend the service life of the equipment.

[0009] As a preferred implementation of a sand temperature regulator, the cover plate and the rubber plate are connected by bolts.

[0010] With the above structural design, the cover plate and the rubber plate are connected by bolts, which not only ensures a firm connection and guarantees that the rubber plate remains in close contact with the cover plate during the sliding of the tie rod, maintaining the sealing effect, but also allows for easy removal of the bolts to replace the rubber plate when the rubber plate wears or ages due to long-term use and affects the sealing performance, reducing maintenance difficulty and cost.

[0011] As a preferred implementation of a sand temperature regulator, two downward adjustment plates are arranged side by side, and each downward adjustment plate is connected to a corresponding pull rod.

[0012] With the above structural design, two downward adjusting plates are arranged side by side and each connected to a tie rod. By controlling the movement of the two tie rods separately, more flexible adjustment of the overlapping area of ​​the sand discharge hole and the sand drop hole can be achieved, expanding the adjustment range of molding sand flow. Simultaneously, the dual-plate adjustment allows for finer flow rate changes, improving adjustment accuracy and meeting the precise requirements of molding sand flow for different casting production processes. When the molding sand demand is large, the two downward adjusting plates can work together to increase the total area of ​​the sand drop channel, improving molding sand processing efficiency and adapting to the pace of large-scale casting production.

[0013] Furthermore, the two downward adjusting plates, each connected to a tie rod, evenly distribute the weight and impact force of the molding sand during its fall across the two plates and tie rods. This significantly reduces the load on individual plates, rods, and connecting components, minimizing fatigue damage caused by excessive localized stress and extending component lifespan. The two downward adjusting plates are driven by independent tie rods, preventing tilting and jamming caused by concentrated force during single-plate adjustment. During adjustment, the two plates slide more smoothly in the horizontal direction, ensuring precise alignment of the sand discharge and drop holes, reducing sand flow fluctuations due to uneven stress, and guaranteeing the stability of the sand cooling process, thus ensuring casting quality. In mass production, when the sand flow is high, the two downward adjusting plates can share the impact load, preventing deformation of a single plate due to excessive load. This ensures stable adjustment of the sand drop even under high flow conditions, meeting the stress requirements of efficient production.

[0014] As a preferred implementation of a sand temperature regulator, the cooling box is equipped with several cooling water pipes inside. The length of each cooling water pipe is arranged in a horizontal direction, and the cooling water pipes are arranged in multiple rows in a vertical direction. The multiple rows of cooling water pipes are staggered. The bottom side of the cooling box is equipped with a water inlet, and the top side of the cooling box is equipped with a water outlet. Both ends of each cooling water pipe extend out of the cooling box. Both ends of each cooling water pipe are detachably connected to the two ends of an adjacent cooling water pipe through a metal flexible hose. The bottom cooling water pipe is connected to the water inlet at one end, and the top cooling water pipe is connected to the water outlet at one end.

[0015] Traditional sand temperature regulators use a single-piece cooling water pipe design. When the cooling water pipe needs replacement, the entire system must be disassembled, a cumbersome and time-consuming process that significantly impacts production efficiency. The new design, however, allows for detachable connections at both ends of the cooling water pipes via flexible metal hoses. If a cooling water pipe is damaged, it is not necessary to disassemble the entire system; only the corresponding flexible metal hose needs to be removed for replacement. This greatly reduces maintenance time and improves production efficiency.

[0016] As a preferred implementation of a sand temperature regulator, the cooling water pipe is welded to the cooling box body, with three weld points evenly distributed along the circumferential direction of the cooling water pipe.

[0017] With the above structural design, the cooling water pipes are welded to the cooling box body, with three weld points evenly distributed circumferentially. This ensures a stronger connection between the cooling water pipes and the cooling box body, reducing the risk of loosening or displacement of the cooling water pipes under conditions such as molding sand impact and equipment vibration, thus guaranteeing the stability of the cooling water pipes and ensuring consistent cooling performance. Furthermore, the evenly distributed weld points prevent excessive local welding stress that could lead to deformation of the cooling box body or cooling water pipes, while also reducing weld gaps and lowering the possibility of cooling water leakage.

[0018] As a preferred implementation of a sand temperature regulator, a metal hose is detachably connected to a cooling water pipe via a threaded plug.

[0019] With the above structural design, the metal hose is connected to the cooling water pipe via a threaded plug. This threaded plug connection is simple to operate, facilitating quick disassembly and installation, further improving the convenience of cooling water pipe replacement and maintenance, and reducing equipment downtime. Furthermore, the threaded plug connection effectively seals the connection between the cooling water pipe and the metal hose, preventing cooling water leakage, ensuring the normal operating pressure and flow rate of the cooling system, and guaranteeing that the cooling effect is not affected.

[0020] As a preferred implementation of a sand temperature regulator, the outer periphery of the metal hose is wrapped with a foamed rubber and plastic insulation sleeve.

[0021] During operation, due to the temperature difference between the inside and outside of the sand temperature regulator, condensation will occur on the outer wall of the regulator's pipes. This accumulated condensation can form a water flow, affecting not only the normal operation of the equipment but also potentially causing adverse effects on the surrounding environment. The above-mentioned structural solution, with a foamed rubber-plastic insulation sleeve surrounding the metal flexible hose, effectively blocks heat exchange between the metal hose and the external environment, reducing the amount of condensation on the outer wall of the metal hose caused by the temperature difference. This prevents condensation from accumulating and forming a water flow that could affect the equipment and environment, keeping the production site dry and clean. Furthermore, the insulation sleeve reduces heat loss from the cooling water pipes, ensuring that the cooling water maintains a lower temperature during heat exchange, improving cooling efficiency and reducing energy consumption.

[0022] As a preferred implementation of a sand temperature regulator, the cooling box has water receiving troughs connected to the bottom of both the inlet and outlet.

[0023] With the above structural design, the water collection tank can promptly collect condensate caused by temperature differences between the inlet and outlet, preventing condensate from dripping onto other parts of the equipment or the ground, thus avoiding equipment corrosion and a damp environment, protecting the equipment, and maintaining a clean production site. Simultaneously, the water collection tank guides the collected condensate to a designated discharge location, preventing safety hazards caused by uncontrolled condensate flow.

[0024] As a preferred implementation of a sand temperature regulator, the water inlet is welded to the cooling box.

[0025] The above structural design, with the water collection tank welded to the cooling box, ensures the water collection tank is stably fixed to the cooling box. Even under long-term use and the force of gravity from condensate, it is unlikely to loosen or detach, ensuring the stable operation of the condensate collection function. Furthermore, the welded connection prevents gaps between the water collection tank and the cooling box, preventing condensate leakage and ensuring complete condensate collection, further enhancing the protection of both the equipment and the environment.

[0026] The beneficial effects of this utility model include: In this invention, the two ends of the pull rod are square, allowing for stable connection with the lower adjustment plate and the telescopic drive mechanism, preventing relative rotation from affecting transmission accuracy. The middle part is cylindrical, providing better sealing and reducing the amount of molding sand carried out during the push-pull operation, thus lowering the molding sand leakage rate, reducing molding sand waste, minimizing wear on equipment components and interference with the electrical control system, and ensuring stable equipment operation. This invention uses the telescopic drive mechanism to drive the pull rod, causing the lower adjustment plate to slide horizontally. This changes the alignment between the sand discharge hole on the lower adjustment plate and the sand drop hole at the bottom of the cooling box, precisely adjusting the amount of molding sand falling to meet the different production conditions and ensuring stable molding sand cooling. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0028] Figure 1 This is a front structural diagram of a sand temperature regulator according to a specific embodiment of the present utility model; Figure 2 This is a partial structural diagram of the regulating valve housing in a specific embodiment of the present utility model; Figure 3 This is a top view of the regulating valve housing in a specific embodiment of the present invention. Figure 4 This is a partial structural diagram of the connection between the cooling water pipe and the metal flexible hose in a specific embodiment of this utility model; Figure 5 This is a three-dimensional structural diagram of the pull rod in a specific embodiment of this utility model.

[0029] List of components and reference numerals: 1. Cooling box body; 2. Flow control valve housing; 3. Lower flow control plate; 4. Sand discharge hole; 5. Sand release hole; 6. Pull rod; 7. Telescopic drive mechanism; 8. Cover plate; 9. Rubber plate; 10. Cooling water pipe; 11. Water inlet; 12. Water outlet; 13. Metal hose; 14. Plug; 15. Foamed rubber and plastic insulation sleeve; 16. Water receiving tank. Detailed Implementation

[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-5 This embodiment proposes a sand temperature regulator, including a cooling box 1. The lower part of the cooling box 1 is connected to a regulating valve housing 2. The regulating valve housing 2 has two horizontally sliding lower regulating plates 3, which are arranged side by side. The sliding direction of each lower regulating plate 3 is set along the horizontal transverse direction. The upper surface of each lower regulating plate 3 abuts against the bottom of the cooling box 1. The bottom of the cooling box 1 has a number of sand drop holes 4. Each lower regulating plate 3 has a number of sand discharge holes 5 with the same arrangement as the corresponding upper sand drop holes 4. Two pull rods slidably connect to the side of the regulating valve housing 2. The axial direction of each pull rod 6 is set along the horizontal transverse direction. One end of each pull rod 6 is inserted into the regulating valve housing 2 and is hinged to a lower regulating plate 3. The other end of each pull rod 6 is hinged to a telescopic drive mechanism 7. The telescopic drive mechanism 7 can drive the pull rod 6 to move along the horizontal transverse direction. The two ends of the pull rod 6 are square and the middle part is cylindrical.

[0032] A cover plate 8 is provided on the outside of the regulating valve housing 2. A rubber plate 9 is provided on the side of the cover plate 8 close to the regulating valve housing 2. The cover plate 8 and the rubber plate 9 are attached to each other and connected by bolts. The middle part of the pull rod 6 slides through the rubber plate 9 and the cover plate 8. The outer circumferential surface of the middle part of the pull rod 6 is in a sealed sliding connection with the rubber plate 9.

[0033] The cooling box 1 contains several cooling water pipes 10. Each cooling water pipe 10 is arranged horizontally along its length, and multiple rows of cooling water pipes 10 are arranged vertically in a staggered manner. A water inlet 11 is located at the bottom of the side of the cooling box 1, and a water outlet 12 is located at the top of the side of the cooling box 1. Water receiving troughs 16 are welded to the bottom of both the water inlet 11 and the bottom of the water outlet 12. Both ends of each cooling water pipe 10 extend out of the cooling box 1 and are welded to the cooling box 1 at three points, evenly distributed along the circumference of the cooling water pipe 10. Both ends of each cooling water pipe 10 are detachably connected to the ends of an adjacent cooling water pipe 10 via a flexible metal hose 13. The bottommost cooling water pipe 10 is connected to the water inlet 11 at one end, and the topmost cooling water pipe 10 is connected to the water outlet 12 at one end. The metal hose 13 is detachably connected to the cooling water pipe 10 via a threaded plug 14. The outer periphery of the metal hose 13 is wrapped with a foamed rubber and plastic insulation sleeve 15.

[0034] In this embodiment, the sand temperature regulator is provided with multiple cooling boxes 1 from top to bottom. The adjacent cooling boxes 1 are connected vertically, which can perform gradient cooling of the molding sand and ensure sufficient cooling effect.

[0035] Work process: The molding sand to be cooled enters from the top of the cooling chamber 1. Inside the cooling chamber 1, multiple rows of horizontal cooling water pipes 10 are arranged in a staggered vertical direction. Cooling water flows in from the inlet 11 at the bottom side of the cooling chamber 1, is introduced through the bottom cooling water pipe 10, and then flows through the metal hose 13 through each row of cooling water pipes 10 in sequence, finally converging from the top cooling water pipes 10 and exiting from the outlet 12 at the top side. The staggered arrangement of the cooling water pipes 10 increases the contact area with the molding sand, providing a sufficient heat exchange basis for cooling the molding sand.

[0036] The cooled molding sand falls to the bottom of the cooling box 1 and enters the regulating valve housing 2 through the sand drop hole 4 at the bottom. Two lower regulating plates 3 are arranged side by side inside the regulating valve housing 2. Each lower regulating plate 3 is connected to a corresponding pull rod 6. The two ends of the pull rod 6 are square and are hinged to the lower regulating plate 3 and the telescopic drive mechanism 7, respectively. The middle part of the pull rod 6 is cylindrical and passes through the cover plate 8 and the rubber plate 9, and is slidably connected to the rubber plate 9 in a sealed manner.

[0037] The telescopic drive mechanism 7 (such as a cylinder) drives the tie rod 6 to move horizontally, causing the lower adjusting plate 3 to slide. This changes the overlap between the sand discharge hole 5 on the lower adjusting plate 3 and the sand drop hole 4 on the cooling box 1: the larger the overlap area, the greater the amount of molding sand falling; the smaller the overlap area, the smaller the amount of falling sand. The two lower adjusting plates 3 can be adjusted independently, flexibly adapting to different flow requirements, while dispersing the gravity and impact force of the molding sand, avoiding deformation caused by excessive load on a single plate.

[0038] The cover plate 8 on the outside of the regulating valve housing 2 is fixed to the rubber plate 9 with bolts. The cylinder in the middle of the pull rod 6 fits tightly with the rubber plate 9 to form a dynamic seal, effectively preventing molding sand from overflowing from the gap between the pull rod 6 and the housing. The foamed rubber and plastic insulation sleeve 15 around the metal hose 13 reduces condensation, while the water receiving troughs 16 at the bottom of the inlet 11 and outlet 12 collect a small amount of condensation to prevent it from dripping and affecting the equipment and the environment.

[0039] After the molding sand has been regulated, it is discharged from the regulating valve housing 2 through the sand discharge hole 5, completing the cooling and flow control process, and then proceeds to the next production stage. If the cooling water pipe 10 is damaged, the corresponding metal hose 13 can be disassembled and replaced separately without overall disassembly, ensuring the continuous and stable operation of the equipment.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sand temperature regulator, comprising a cooling chamber (1), characterized in that, The lower part of the cooling box (1) is connected to the regulating valve housing (2). The regulating valve housing (2) is provided with a horizontally sliding lower regulating plate (3). The sliding direction of the lower regulating plate (3) is set along the horizontal transverse direction. The upper surface of the lower regulating plate (3) abuts against the bottom of the cooling box (1). The bottom of the cooling box (1) is provided with several sand-dropping holes (4). The lower regulating plate (3) is provided with several sand-discharging holes (5) with the same arrangement as the sand-dropping holes (4). A pull rod (6) is slidably connected to the side of the regulating valve housing (2). The axial direction of the pull rod (6) is set along the horizontal transverse direction. One end of the pull rod (6) is inserted into the interior of the regulating valve housing (2) and hinged to the lower regulating plate (3). The other end of the pull rod (6) is hinged to the telescopic drive mechanism (7). The telescopic drive mechanism (7) can drive the pull rod (6) to move along the horizontal transverse direction. The two ends of the pull rod (6) are square and the middle part is cylindrical.

2. The sand temperature regulator according to claim 1, characterized in that, A cover plate (8) is provided on the outside of the regulating valve housing (2). A rubber plate (9) is provided on the side of the cover plate (8) close to the regulating valve housing (2). The cover plate (8) is attached to and connected to the rubber plate (9). The middle part of the pull rod (6) slides through the rubber plate (9) and the cover plate (8). The outer circumferential surface of the middle part of the pull rod (6) is in a sealed sliding connection with the rubber plate (9).

3. A sand temperature regulator according to claim 2, characterized in that, The cover plate (8) and the rubber plate (9) are connected by bolts.

4. A sand temperature regulator according to claim 1, characterized in that, Two adjustment plates (3) are arranged side by side, and each adjustment plate (3) is connected to a corresponding pull rod (6).

5. A sand temperature regulator according to claim 1, characterized in that, The interior of the cooling box (1) is provided with several cooling water pipes (10). The length of each cooling water pipe (10) is arranged in the horizontal direction. Several cooling water pipes (10) are arranged in multiple rows in the vertical direction. The multiple rows of cooling water pipes (10) are arranged in a staggered manner. The bottom side of the cooling box (1) is provided with an inlet (11) and the top side of the cooling box (1) is provided with an outlet (12). Both ends of each cooling water pipe (10) extend out of the cooling box (1). Both ends of each cooling water pipe (10) are detachably connected to the two ends of the adjacent cooling water pipe (10) through a metal hose (13). The bottom cooling water pipe (10) is connected to the inlet (11) at one end and the top cooling water pipe (10) is connected to the outlet (12) at one end.

6. A sand temperature regulator according to claim 5, characterized in that, The cooling water pipe (10) is welded to the cooling box (1), and there are three weld points. The three weld points are evenly distributed along the circumferential direction of the cooling water pipe (10).

7. A sand temperature regulator according to claim 5, characterized in that, The metal hose (13) is detachably connected to the cooling water pipe (10) via a plug (14).

8. A sand temperature regulator according to claim 5, characterized in that, The outer periphery of the metal hose (13) is wrapped with a foamed rubber and plastic insulation sleeve (15).

9. A sand temperature regulator according to claim 5, characterized in that, The cooling box (1) has a water receiving tank (16) connected to the bottom of the water inlet (11) and the bottom of the water outlet (12).

10. A sand temperature regulator according to claim 9, characterized in that, The water receiving tank (16) is welded to the cooling box (1).

Images