A sand casting water cooling device

Abstract

The present invention discloses a water-cooling device for sand casting, which relates to the technical field of sand mold cooling. It includes a water inlet pipe and a water outlet pipe. Both the water inlet pipe and the water outlet pipe are annular. They are fixedly connected by a rigid sleeve and are in a concentric state. A plurality of communicating vessels are uniformly installed circumferentially between the water inlet pipe and the water outlet pipe. The communicating vessel includes a first chamber communicating with the water inlet pipe and a second chamber communicating with the water outlet pipe. A cooling pipe for cooling the sand mold is fixedly installed at the bottom of the communicating vessel. The water-cooling device for sand casting provided by the present invention has its cooling pipe inserted into the interior of the sand mold, and heat exchange can be directly carried out with the interior of the sand mold through the cooling pipe, improving the heat dissipation effect on the interior of the sand mold. In addition, a plurality of movable arc-shaped plates are installed on the outer wall of the cooling pipe. During the demolding process, the operator first moves the arc-shaped plates to separate them from the sand mold, and then removes the water-cooling device to reduce the frictional resistance when the water-cooling device is taken out upward.

Description

Technical Field

[0001] The present invention relates to the technical field of sand mold cooling, and particularly to a water-cooling device for sand casting. Background Art

[0002] During the casting process, the quality and temperature control of the sand mold are crucial. Traditional cooling methods often suffer from problems such as low efficiency and unstable temperature control, which not only affect the quality of the cast products but also increase production costs and time. To reduce the temperature of the sand mold during casting, water-cooling devices are used in the prior art to cool the sand mold. The core of this device lies in its efficient heat exchange capacity. Through the heat transfer between water and the sand mold, rapid and stable cooling is achieved, which not only improves the cooling efficiency of the sand mold but also ensures the stability and durability of the sand mold during the casting process.

[0003] Currently, there have been some studies on water-cooling devices for sand molds. For example, a sand casting water-cooling device disclosed in a Chinese utility model patent with the publication number CN215544840U includes a cavity. A sand box is provided above the cavity. Sand is contained in the sand box. Air holes are formed in the sand. A feeding port is fixedly communicated with the sand. A cooling pipe is fixedly connected to the inner cavity of the cavity. In this device, starting the submersible pump can drive the water in the first cooling water tank to circulate in the cooling pipe, increasing the flow path of the water and conducting the heat of the water in the first cooling water tank to the second cooling water tank through the heat conduction plate, quickly reducing the temperature of the water in the first cooling water tank, thereby increasing the cooling speed of the cooling pipe for the casting object.

[0004] Another example is a sand casting pouring circulating water-cooling device disclosed in a Chinese utility model patent with the publication number CN214133935U, which includes an air compression refrigeration machine, a workbench, and a cooling pipe group. A first support bar and a second support bar for supporting the sand mold are slidably connected to the workbench. A driving component is connected to the workbench. The cooling pipe group includes a cooling main pipe and cooling branch pipes. The cooling branch pipes are communicated with the cooling main pipe. A recovery pipe is communicated between the cooling branch pipes and the air compression refrigeration machine. The recovery pipe includes a recovery main pipe and a recovery adapter pipe. The cooling branch pipes are detachably connected between the cooling main pipe and the recovery main pipe. Plugging plates for blocking spare holes are detachably connected to both the cooling main pipe and the recovery main pipe.

[0005] In the prior art of sand mold water-cooling devices including the above patents, the water-cooling pipes are laid on the outer surface of the sand mold, and the contact between the water-cooling pipes and the sand mold is insufficient. The inside of the sand mold cannot dissipate heat quickly and sufficiently, and the effect of the cooling device still needs to be enhanced. Summary of the Invention

[0006] The purpose of the present invention is to provide a water-cooling device for sand casting to solve the above deficiencies in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: A water-cooling device for sand casting, comprising a water inlet pipe and a water outlet pipe. Both the water inlet pipe and the water outlet pipe are annular, and they are fixedly connected by a rigid sleeve and are in a concentric state. A plurality of communicating vessels are uniformly installed circumferentially between the water inlet pipe and the water outlet pipe. The communicating vessel includes a first chamber communicating with the water inlet pipe and a second chamber communicating with the water outlet pipe. A cooling pipe for cooling the sand mold is fixedly installed at the bottom of the communicating vessel.

[0008] As a preferred technical solution of the present invention, a partition plate that divides the cooling pipe into a first pipe chamber and a second pipe chamber is fixedly installed in the cooling pipe, and a through groove is opened at the bottom of the partition plate. A first through hole communicating the first chamber and the first pipe chamber, and a second through hole communicating the second chamber and the second pipe chamber are opened on the communicating vessel.

[0009] As a preferred technical solution of the present invention, a plurality of arc-shaped grooves are uniformly opened on the outer wall of the cooling pipe along its circumference, and arc-shaped plates are slidably installed in the arc-shaped grooves along the radial direction of the cooling pipe.

[0010] As a preferred technical solution of the present invention, a translation block is fixedly installed on the inner arc surface of the arc-shaped plate, a round pin is rotatably installed on the translation block, a lifting rod is slidably installed vertically on the top surface of the arc-shaped groove, and an inclined groove for cooperating with the round pin is opened on the lifting rod. A horizontal top plate is fixedly installed at the top of the lifting rod, and the top plates corresponding to each arc-shaped groove are fixedly connected by a connecting rod.

[0011] As a preferred technical solution of the present invention, a ring is rotatably installed at the bottom of the communicating vessel, a limiting rod is vertically fixedly installed at the position of the bottom surface of the ring corresponding to each top plate, and a ball is installed on the bottom surface of the limiting rod.

[0012] As a preferred technical solution of the present invention, a water receiving tray is installed on the cooling pipe above the arc-shaped groove, and a sponge is installed on the upper surface of the water receiving tray.

[0013] As a preferred technical solution of the present invention, a plurality of heat conducting rods extending into the first pipe chamber or the second pipe chamber are fixedly installed on the inner arc surface of the arc-shaped plate.

[0014] As a preferred technical solution of the present invention, the end surface of the heat conducting rod in the first pipe chamber is an upward inclined surface; the end surface of the heat conducting rod in the second pipe chamber is a downward inclined surface.

[0015] As a preferred technical solution of the present invention, the heat conducting rod includes a stainless steel core fixedly connected to the inner arc surface of the arc-shaped plate, and a rubber layer sleeved outside the stainless steel core and deformable under an external force; an elastic member is connected between the top plate and the cooling pipe.

[0016] As a preferred technical solution of the present invention, a plurality of mounting shafts are movably installed on the partition plate, and semi-circular plates are fixedly installed at both ends of the mounting shaft.

[0017] In the above technical solution, for a sand casting water cooling device provided by the present invention, its cooling pipe is inserted into the sand mold, and heat exchange can be directly carried out with the inside of the sand mold through the cooling pipe, improving the heat dissipation effect on the inside of the sand mold. In addition, a plurality of movable arc-shaped plates are installed on the outer wall of the cooling pipe, so that even if the sand mold with a higher temperature during the heat dissipation process expands and forms extrusion with the arc-shaped plates; during the demolding process, the operator can first move the arc-shaped plates to separate the arc-shaped plates from the sand mold, and then take out the water cooling device to reduce the frictional resistance when taking out the water cooling device upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the sand casting water cooling device in Embodiment 1;

[0020] Figure 2 It is a working state schematic diagram of the sand casting water cooling device and the sand mold in Embodiment 1;

[0021] Figure 3 For Figure 2 the enlarged schematic diagram at A in

[0022] Figure 4 It is a structure schematic diagram of the partition plate in Embodiment 1;

[0023] Figure 5 It is a first three-dimensional structure schematic diagram of the cooling pipe in Embodiment 2;

[0024] Figure 6 For Figure 5 the enlarged schematic diagram at B in

[0025] Figure 7 It is a second three-dimensional structure schematic diagram of the cooling pipe in Embodiment 2;

[0026] Figure 8 For Figure 7 the enlarged schematic diagram at C in

[0027] Figure 9 It is a schematic diagram of the internal structure of the cooling pipe in Embodiment 2;

[0028] Figure 10Schematic diagram of the internal structure of the cooling pipe in Embodiment 3;

[0029] Figure 11 Schematic diagram of the heat conduction rod structure in the first lumen in Embodiment 3;

[0030] Figure 12 Schematic diagram of the heat conduction rod structure in the second lumen in Embodiment 3;

[0031] Figure 13 Internal structure cross-sectional view of the heat conduction rod in Embodiment 4;

[0032] Figure 14 Partial structure schematic diagram of the cooling pipe in Embodiment 4.

[0033] Explanation of reference numerals:

[0034] 1, water inlet pipe; 2, water outlet pipe; 3, communicating vessel; 301, first chamber; 302, second chamber; 303, first through hole; 304, second through hole; 4, cooling pipe; 401, first lumen; 402, second lumen; 403, arc groove; 5, partition board; 6, arc plate; 7, round pin; 8, lifting rod; 801, inclined groove; 9, top plate; 10, connecting rod; 11, ring; 12, limiting rod; 13, water receiving tray; 14, sponge; 15, heat conduction rod; 1501, stainless steel core; 1502, rubber layer; 16, elastic member; 17, mounting shaft; 18, semi-circular plate. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, this embodiment provides a water-cooling device for sand casting, which includes a water inlet pipe 1 and a water outlet pipe 2. Both the water inlet pipe 1 and the water outlet pipe 2 are annular. They are fixedly connected by a rigid sleeve and are concentric. The water inlet pipe 1 is externally connected to a water delivery hose, and the water outlet pipe 2 is externally connected to a water outlet hose. The water delivery hose and the water outlet hose are connected and communicated. A heat exchanger and a water pump are arranged between the water delivery hose and the water outlet hose. The heat exchanger is used to cool the water in the water delivery hose and the water outlet hose. The types of the heat exchanger include but are not limited to air coolers. The water delivery hose, the water outlet hose, the heat exchanger and the water pump are all prior arts in this field, so they will not be elaborated in detail here and are not shown in the figure either. A plurality of communicating vessels 3 are uniformly installed circumferentially between the water inlet pipe 1 and the water outlet pipe 2. The communicating vessel 3 includes a first chamber 301 communicated with the water inlet pipe 1 and a second chamber 302 communicated with the water outlet pipe 2. The first chamber 301 and the second chamber 302 are not directly communicated. A cooling pipe 4 for cooling the sand mold is fixedly installed at the bottom of the communicating vessel 3.

[0038] Specifically, before casting, first install the sand box at the established tooling position, then fill a certain amount of molding sand into the sand box, and then lift and place the water-cooling device for sand casting into the sand box by a hoisting device, so that the bottom surface of the cooling pipe 4 is in contact with the lower surface of the accumulated molding sand. Then fill the remaining molding sand (reserving the cavity) and open exhaust holes on the surface of the accumulated molding sand. In this way, part of the cooling pipe 4 is buried by the sand mold. After pouring the molten metal into the cavity, the temperature of the sand mold rises due to heating. After starting the water pump, water enters the water inlet pipe 1 through the water delivery hose and fills the water inlet pipe 1, then enters the cooling pipe 4, and flows into the water outlet pipe 2, and finally enters the heat exchanger through the water outlet hose for heat dissipation and cooling. Such a cycle is repeated. The sand mold exchanges heat with the cooling pipe 4, so that the temperature of the cooling pipe 4 rises and the temperature of the sand mold itself decreases. The water in the cooling pipe 4 exchanges heat with the cooling pipe 4, so that the temperature of the cooling pipe 4 decreases. Since the cooling pipe 4 is inserted into the sand mold, sufficient heat dissipation can be carried out inside the sand mold. After casting is completed, first turn off the water pump, then lift the water-cooling device for sand casting upward by a hoisting device to a state completely separated from the sand mold, and then open the mold to take out the workpiece.

[0039] As Figure 2 and Figure 4As shown, a partition plate 5 that divides the cooling pipe 4 into a first pipe cavity 401 and a second pipe cavity 402 is fixedly installed inside the cooling pipe 4. The top surface of the partition plate 5 is fixedly connected to the bottom surface of the communicating vessel 3. A through groove 501 that penetrates the partition plate 5 is provided near the bottom of the partition plate 5; a first through hole 303 that communicates the first chamber 301 and the first pipe cavity 401, and a second through hole 304 that communicates the second chamber 302 and the second pipe cavity 402 are provided on the communicating vessel 3; in this way, the water flow entering the first chamber 301 through the water delivery pipe 1 will first enter the first pipe cavity 401 through the first through hole 303, then pass through the through groove 501 to enter the second pipe cavity 402, then enter the second chamber 302 through the second through hole 304, and finally flow into the water outlet pipe 2; through the setting of the partition plate 5, the path of the water flow is controlled (the water flow has to pass through a path nearly twice the length of the cooling pipe 4 in the cooling pipe 4), the time for the water to flow in the cooling pipe 4 is prolonged, and the heat exchange effect between the water and the cooling pipe 4 is improved. It can not only avoid the situation where some water returns to the communicating vessel 3 without sufficient heat exchange, but also avoid the situation where some water stays in the cooling pipe 4 for a long time and cannot flow back to the communicating vessel 3.

[0040] Embodiment 2

[0041] In the actual production process, since the cooling pipe 4 in the water cooling device is directly inserted into the sand mold, when the sand mold expands due to heat, extrusion will be formed between the sand mold and the cooling pipe 4, and the static friction force between the two is relatively large. During the process of lifting the water cooling device after casting is completed, the surface of the cooling pipe 4 will be subject to a large frictional resistance, which is not only not conducive to hoisting, but also will damage the sand mold and affect the continued use of the sand mold; based on this, the following design is carried out in this embodiment.

[0042] As Figures 5 - 9 shown, on the basis of the previous embodiment, a plurality of arc-shaped grooves 403 are uniformly provided on the outer wall of the cooling pipe 4 in this embodiment along its circumferential direction. The virtual center of the arc-shaped grooves 403 coincides with the axis of the cooling pipe 4. An arc-shaped plate 6 is slidably installed in the arc-shaped grooves 403 along the radial direction of the cooling pipe 4. The two sides of the arc-shaped plate 6 are in contact with the side walls of the arc-shaped grooves 403; a translation block is fixedly installed on the inner arc surface of the arc-shaped plate 6, and a round pin 7 is rotatably installed on the translation block. A lifting rod 8 is slidably installed vertically on the top surface of the arc-shaped groove 403. An inclined groove 801 that cooperates with the round pin 7 is provided on the lifting rod 8. Specifically, the round pin 7 penetrates the inclined groove 801, and the outer surface of the round pin 7 is in contact with the inner wall of the inclined groove 801; a horizontal top plate 9 is fixedly installed at the top of the lifting rod 8, and the top plates 9 corresponding to each arc-shaped groove 403 are fixedly connected through a connecting rod 10; a ring 11 is rotatably installed at the bottom of the communicating vessel 3, and a limiting rod 12 is vertically and fixedly installed at the position corresponding to each top plate 9 on the bottom surface of the ring 11, and a ball is installed on the bottom surface of the limiting rod 12.

[0043] Specifically, in the initial state, as Figure 9As shown, the cooling pipe 4 and the outer arc surfaces of the respective arc-shaped plates 6 together form a complete circumferential surface. At the same time, the bottom end of the limit rod 12 is in contact with the top plate 9, and the top plate 9 and the lifting rod 8 will not rise relative to the cooling pipe 4 under the limiting action of the limit rod 12; the round pin 7 is located in the middle of the inclined groove 801; during the casting process, the arc-shaped plate 6 always remains in its initial state; even if the sand mold expands due to heat, squeezing the outer arc surface of the arc-shaped plate 6, the arc-shaped plate 6 will not move towards the inside of the arc-shaped groove 403 because the inclined groove 801 plays a limiting role on the round pin 7, preventing the arc-shaped plate 6 and the round pin 7 from moving towards the inside of the arc-shaped groove 403; after casting is completed, the operator first rotates the ring 11 so that the limit rod 12 rotates to a position misaligned with the top plate 9, and then the operator pulls up the connecting rod 10 to drive the respective top plates 9 and lifting rods 8 to rise (the rising distance in this embodiment is 1 cm); a force is generated between the inclined groove 801 and the round pin 7, causing the round pin 7 and the arc-shaped plate 6 to move a certain distance towards the inside of the arc-shaped groove 403, and the outer arc surface of the arc-shaped plate 6 is also separated from the sand mold synchronously; in this way, during the process of lifting the water-cooling device upward from the sand mold, the frictional resistance of the water-cooling device from the sand mold is greatly reduced, which not only facilitates the lifting of the water-cooling device but also reduces the damage to the sand mold; after lifting the water-cooling device from the sand mold, then push down the connecting rod 10 to drive the respective top plates 9 and lifting rods 8 to descend relative to the cooling pipe 4 to the initial position, and finally reverse the ring 11 so that the limit rod 12 reverses to a position in contact with the respective top plates 9.

[0044] As Figure 5 and Figure 7 shown, a water receiving tray 13 is installed on the cooling pipe 4 above the arc-shaped groove 403, and a sponge 14 is installed on the upper surface of the water receiving tray 13; during actual production, the sand mold continuously dissipates heat after being heated, making the air temperature on the surface of the sand mold relatively high. In fact, the temperature of the cooling pipe 4 above the sand mold is 15 - 20 °C lower than the air temperature on the surface of the sand mold, which will cause condensed water to form on the surface of the cooling pipe 4. The condensed water will gather downward and seep into the surface of the sand mold, affecting the quality of the sand mold; in this embodiment, during the casting process, the water receiving tray 13 is always in contact with the surface of the sand mold, that is, the temperature of the water receiving tray 13 is relatively high, and condensed water will not form on the surface of the water receiving tray 13. The condensed water on the surface of the cooling pipe 4 above the water receiving tray 13 will gather downward onto the water receiving tray 13 and be adsorbed by the sponge 14. In this way, the situation where condensed water directly seeps into the sand mold is avoided.

[0045] Embodiment 3

[0046] In the above embodiments, due to the existence of the arc-shaped groove 403, the heat on the arc-shaped plate 6 cannot be fully transferred to the cooling pipe 4. Based on this, the following design is made in this embodiment.

[0047] As Figure 10 、 Figure 11 and Figure 12As shown, on the basis of the previous embodiment, a plurality of heat conducting rods 15 extending into the first lumen 401 or the second lumen 402 are fixedly installed on the inner arc surface of the arc-shaped plate 6, and the heat conducting rods 15 are evenly arranged from top to bottom; in this way, the heat on the arc-shaped plate 6 can be transferred to the water in the first lumen 401 or the second lumen 402 through the heat conducting rods 15; in addition, the end surface of the heat conducting rod 15 in the first lumen 401 is an upward inclined surface, and the end surface of the heat conducting rod 15 in the second lumen 402 is a downward inclined surface; when the water in the first lumen 401 flows downward, it acts on the upward inclined surface of the heat conducting rod 15, exerting an outward horizontal pushing force on the heat conducting rod 15, and when the water in the second lumen 402 flows upward, it acts on the downward inclined surface of the heat conducting rod 15, also exerting an outward horizontal pushing force on the heat conducting rod 15; the heat conducting rod 15 will push the arc-shaped plate 6 to move outward under the action of the horizontal force; a plurality of mounting shafts 17 are movably installed on the partition plate 5, and semi-circular plates 18 are fixedly installed at both ends of the mounting shaft 17. While the water flow acts on the two semi-circular plates 18 to drive the semi-circular plates 18 and the mounting shaft 17 to rotate irregularly, the flow rate and flow direction of the water flow itself will also be in an irregular state under the action of the semi-circular plates 18; then the horizontal force acting on the heat conducting rod 15 is also in a state of changing magnitude. As the water flow continues to flow, the arc-shaped plate 6 will continuously generate high-frequency micro-amplitude vibrations, thus avoiding the situation where the arc-shaped plate 6 cannot move inward to the inner side of the arc-shaped groove 403 due to the extrusion and adhesion between the sand mold and the arc-shaped plate 6 during the heat expansion of the sand mold.

[0048] In summary, in this embodiment, by installing the heat conducting rods 15 on the inner arc surface of the arc-shaped plate 6, on the one hand, the heat exchange effect between the arc-shaped plate 6 itself and the water is improved, and on the other hand, the arc-shaped plate 6 is continuously in a state of high-frequency micro-amplitude during the entire casting process under the action of the water flow, avoiding the adhesion between the sand mold and the outer arc surface of the arc-shaped plate 6.

[0049] Embodiment 4

[0050] As Figure 13 and Figure 14As shown, on the basis of the previous embodiment, in this embodiment, the heat conduction rod 15 includes a stainless steel core 1501 fixedly connected to the inner arc surface of the arc-shaped plate 6, and a rubber layer 1502 sleeved outside the stainless steel core 1501 and deformable under the action of an external force. Specifically, the rubber layer 1502 does not move relative to the cooling pipe 4, and the rubber layer 1502 will deform along its length direction under the action of an external force. When the external force disappears or decreases, the rubber layer 1502 has a tendency to recover; thus, the rubber layer 1502 always fits with the cooling pipe 4, avoiding the water in the cooling pipe 4 from seeping out; when the rubber layer 1502 deforms along its length direction, it will drive the stainless steel core 1501 wrapped inside it to translate; an elastic member 16 is connected between the top plate 9 and the cooling pipe 4, and the elastic member 16 is in a compressed state and has a tendency to push the top plate 9 upward.

[0051] Specifically, during the casting process, when the heat conduction rod 15 is subjected to the acting force from the water flow, the rubber layer 1502 will deform outward along its length direction and drive the stainless steel core 1501 to move horizontally outward relative to the cooling pipe 4. The arc-shaped plate 6 will move horizontally outward a small distance under the drive of the stainless steel core 1501. The round pin 7 moves synchronously with the arc-shaped plate 6. The lifting rod 8 and the top plate 9 will move downward a small distance under the action of the round pin 7 against the action of the elastic member 16, and the top plate 9 is separated from the limiting rod 12; when the action of the water flow weakens, the elastic member 16 will cause the lifting rod 8 and the top plate 9 to rise and reset until the top plate 9 fits with the limiting rod 12 again; the arc-shaped plate 6 and the round pin 7 will move horizontally inward a small distance; thus, the arc-shaped plate 6 can continuously generate reciprocating vibrations, and after the action of the water flow disappears, the arc-shaped plate 6 can maintain the initial state (the state where the cooling pipe 4 and the outer arc surfaces of each arc-shaped plate 6 together form a complete circumferential surface).

[0052] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A sand casting water cooling device, comprising a water delivery pipe (1) and a water outlet pipe (2), characterized in that: The water delivery pipe (1) and the water outlet pipe (2) are both annular, fixedly connected by a rigid sleeve and in a concentric state; a plurality of communicating vessels (3) are evenly installed along the circumference between the water delivery pipe (1) and the water outlet pipe (2); the communicating vessel (3) comprises a first chamber (301) connected to the water delivery pipe (1) and a second chamber (302) connected to the water outlet pipe (2); a cooling pipe (4) for cooling the sand mold is fixedly installed at the bottom of the communicating vessel (3); A partition (5) is fixedly installed inside the cooling tube (4) to separate the cooling tube (4) into a first tube cavity (401) and a second tube cavity (402), and a through groove (501) is provided at the bottom of the partition (5); a first through hole (303) connecting the first chamber (301) and the first tube cavity (401), and a second through hole (304) connecting the second chamber (302) and the second tube cavity (402) are provided on the communicating vessel (3); A plurality of arc-shaped grooves (403) are evenly arranged on the outer wall of the cooling tube (4) along its circumference, and an arc-shaped plate (6) is installed in the arc-shaped groove (403) in a radially sliding manner along the cooling tube (4); A translation block is fixedly mounted on the inner arc surface of the arc plate (6), a round pin (7) is rotatably mounted on the translation block, a lifting rod (8) is vertically slidably mounted on the top surface of the arc groove (403), and an inclined groove (801) cooperating with the round pin (7) is provided on the lifting rod (8); a horizontal top plate (9) is fixedly mounted on the top of the lifting rod (8), and the top plates (9) corresponding to the arc grooves (403) are fixedly connected by a connecting rod (10); a circular ring (11) is rotatably mounted on the bottom of the communicating vessel (3), and a limiting rod (12) is vertically fixedly mounted on the bottom surface of the circular ring (11) at a position corresponding to each top plate (9), and a ball bearing is mounted on the bottom surface of the limiting rod (12); A plurality of heat-conducting rods (15) extending into the first tube cavity (401) or the second tube cavity (402) are fixedly mounted on the inner arc surface of the arc plate (6); the end surface of the heat-conducting rod (15) in the first tube cavity (401) is an upward inclined surface; the end surface of the heat-conducting rod (15) in the second tube cavity (402) is a downward inclined surface; a plurality of mounting shafts (17) are movably mounted on the partition (5), and semicircular plates (18) are fixedly mounted at both ends of the mounting shafts (17); the heat-conducting rod (15) comprises a stainless steel core (1501) fixedly connected to the inner arc surface of the arc plate (6), and a rubber layer (1502) sleeved outside the stainless steel core (1501) and deformable under the action of external force; an elastic member (16) is connected between the top plate (9) and the cooling tube (4).

2. A sand casting water cooling device according to claim 1, characterized in that: The cooling pipe (4) is provided with a water receiving tray (13) located above the arc-shaped groove (403), and a sponge (14) is installed on the upper surface of the water receiving tray (13).

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