Sand temperature cooling device for sand mixer

Abstract

The invention discloses a sand temperature cooling device for a sand mixer, and particularly relates to the field of sand mixers.The sand temperature cooling device comprises a rack, a grinding disc is installed on the rack, a top cover covers the grinding disc, a fixing column is fixedly connected to the middle of the grinding disc, and a first rotating frame and a second rotating frame are rotationally connected to the upper end of the fixing column; a transmission mechanism used for driving the first rotating frame and the second rotating frame to rotate is installed on the machine frame, and grinding wheels are installed on the two sides of the first rotating frame and used for grinding molding sand placed in the grinding disc. By arranging the conveying track and arranging the conveying track into the structure of the upper linear channel, the arc-shaped channel and the lower linear channel, on one hand, the cooling path of molding sand can be lengthened, the cooling effect can be improved, and on the other hand, the positions of the molding sand entering and exiting the conveying track are close when the molding sand is cooled; therefore, the reduction of the processing capacity of the sand mixer due to the fact that the sand mixer enters and exits from the conveying track is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sand mixers, and more particularly to a sand temperature cooling device for a sand mixer. Background Art

[0002] Sand mixer is a special equipment for foundry, used for foundry sand processing and molding sand mixing. There are two types of machine: drum type and roller type. The drum type requires stable quality of raw materials and accurate quantitative, so it is not as widely used as the roller type. The roller type sand mixer is mainly composed of a rolling plate, a rolling wheel, a scraper, and a transmission mechanism. The molding sand is placed in the rolling plate, the rolling wheel rolls in the rolling plate, and the sand is squeezed and mixed under the action of the scraper.

[0003] During the sand mixing process, the sand is strongly squeezed, and strong friction and collision occur between the sands, which generates a lot of heat and needs to be cooled.

[0004] In the prior art, the scraper not only plays the role of mixing the molding sand, but also in the process of scraping the molding sand, the molding sand is thrown backwards during operation, increasing the contact area with the air, thereby achieving the purpose of heat dissipation.

[0005] However, during the sand mixing process, the turnover speed of the roller and the scraper is slow, so the scraper throws the sand slowly and at a low height, which results in a short contact time with the air, an insufficient contact surface, and a poor cooling effect. High temperature will affect the compressive strength of the sand mold, especially in the sand mold hardened at low temperature, which is prone to breakage or deformation during the casting process. Summary of the invention

[0006] The invention provides a sand temperature cooling device for a sand mixer, and aims to solve the problem that the scraper of the existing sand mixer throws the molding sand at a slow speed and a low height, so that the contact time with the air is short, the contact surface is not large enough, and the cooling effect is poor.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sand temperature cooling device for a sand mixer, comprising a frame, a rolling disc is installed on the frame, a top cover is placed on the rolling disc, a fixed column is fixedly connected to the middle of the rolling disc, a rotating frame 1 and a rotating frame 2 are rotatably connected to the upper end of the fixed column, a transmission mechanism for driving the rotating frame 1 and the rotating frame 2 to rotate is installed on the frame, rolling wheels are installed on both sides of the rotating frame 1, and the rolling wheels are used to roll the molding sand placed inside the rolling disc; a cooling mechanism is installed at one end or both ends of the rotating frame 2, and the cooling mechanism includes a conveying track, and the conveying track is fixedly installed at the end of the rotating frame 2 The conveying track includes an upper straight channel, an arc-shaped channel and a lower straight channel connected in sequence, a scraper is fixedly installed at the bottom of the front end of the upper straight channel, the bottom of the lower straight channel is located at the rear side near the front end of the upper straight channel, a feed port is opened at the front end of the upper straight channel, and an air inlet is opened at the front end of the upper straight channel and at the rear side of the feed port; the sand temperature cooling device also includes an air inlet mechanism, which is used to provide cooling air from the air inlet to the interior of the upper straight channel, and the molding sand entering from the feed port is carried by the cooling air through the upper straight channel, the arc-shaped channel and the lower straight channel in sequence and discharged.

[0008] In a preferred embodiment, the conveying track is divided into two parts, an outer track and an inner baffle, along the upper straight channel, the arc channel and the lower straight channel. The inner baffle is movably arranged at the inner side of the outer track. The cross-sectional shape of the conveying track is "U"-shaped. The cooling mechanism also includes a driving component, which is used to drive the inner baffle to move in the middle direction between the ends of the upper straight channel and the lower straight channel.

[0009] In a preferred embodiment, the included angle between the upper linear channel and the lower linear channel is an acute angle, so that the front ends of the upper linear channel and the lower linear channel are close to each other.

[0010] In a preferred embodiment, the driving component includes a fixed frame, which is fixedly installed on the inner side of the inner baffle, and a pressure rod is fixedly installed on the side of the fixed frame close to the arc channel. A left frame is fixedly installed on the rotating frame, and the pressure rod is movably inserted on the left frame. An elastic component is sleeved on the pressure rod, and the elastic component is used to reset the left frame in the direction of the arc channel.

[0011] In a preferred embodiment, a right frame is fixedly installed on a side of the fixed frame away from the arc channel, a rotating frame is rotatably connected to a rotating shaft, a cam and a transmission wheel are respectively fixedly installed at both ends of the rotating shaft, the cam is located on the inner side of the right frame, a plurality of transmission pins are fixedly connected in the circumferential direction of the transmission wheel, a plurality of fixed pins are fixedly connected in the circumferential direction of the fixed column, and the transmission pins are meshed with the fixed pins.

[0012] In a preferred embodiment, the air intake mechanism includes an air intake frame, which is installed at the position of the upper straight channel and connected to the air inlet. A lower air duct is fixedly connected to the middle of the upper end of the rotating frame, and the lower air duct is connected to the air intake frame through a connecting pipe. An upper air duct is fixedly connected to the middle of the top cover, and the bottom of the upper air duct is pressed on the upper end of the lower air duct. A fan is installed on the frame, and the fan is connected to the upper end of the upper air duct.

[0013] In a preferred embodiment, connecting frames are provided on both sides of rotating frame one, one end of the connecting frame is rotatably connected to rotating frame one, the rolling wheel is rotatably connected to the other end of the connecting frame, and a scraper bar is fixedly connected to the upper end of the connecting frame, and the scraper bar is located on the outer surface of the rolling wheel.

[0014] In a preferred embodiment, the transmission mechanism includes a motor and a reducer installed at the bottom of the frame, the output shaft of the motor is connected to the input shaft of the reducer through a transmission component, and the output shaft of the reducer passes through a fixed column and is fixedly connected to rotating frame one and rotating frame two.

[0015] In a preferred embodiment, a discharge port is opened on one side of the bottom of the grinding disc, a discharge piece is arranged on the inner side of the discharge port, a T-shaped rod is rotatably connected to the grinding disc, the bottom end of the T-shaped rod is fixedly connected to the discharge piece, and a cylinder 2 is arranged on one side of the grinding disc, one end of the cylinder 2 is hinged to the grinding disc, and the other end of the cylinder 2 is hinged to one end in the middle of the T-shaped rod.

[0016] In a preferred embodiment, a cylinder one is provided on one side of the rolling disc, the bottom of the cylinder one is hinged to the rolling disc, the upper end of the cylinder one is hinged to the top cover, and the top cover is located on one side of the cylinder one and is hinged to the rolling disc.

[0017] Technical effects and advantages of the present invention: The present invention arranges a conveying track, and arranges the conveying track into a structure of an upper straight channel, an arc channel and a lower straight channel. On the one hand, the cooling path of the molding sand can be lengthened to improve the cooling effect. On the other hand, the molding sand can be placed closer to each other when entering and exiting the conveying track during cooling, thereby avoiding a reduction in the processing capacity of the sand mixer caused by a long distance when entering and exiting the conveying track.

[0018] The present invention divides the conveying track into two parts, an outer track and an inner baffle plate, and enables the inner baffle plate to move relative to the outer track. If agglomerated molding sand is blocked, the volume of the agglomerated molding sand can be reduced or broken by friction and extrusion at the positions of the upper straight channel and the lower straight channel, thereby achieving the purpose of preventing blockage. At the position of the arc channel, when the inner baffle plate moves obliquely downward, its space will become larger, so that the molding sand can pass smoothly, thereby achieving the purpose of preventing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 .

[0020] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 .

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the local structure of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the cooling machine of the present invention.

[0024] Figure 6 For the present invention Figure 5 sectional view of .

[0025] Figure 7 It is a schematic diagram of the installation of the rotating frame 1, the rolling wheel, the connecting frame and the scraper strip of the present invention.

[0026] Figure 8 It is a schematic diagram of the relative movement between the outer track and the inner baffle of the present invention.

[0027] Fig. 9 It is an exploded view of the outer track and inner baffle of the present invention.

[0028] The accompanying drawings are marked as follows: 1, frame; 11, grinding disc; 111, fixed column; 112, discharge port; 12, top cover; 2, rotating frame 1; 21, grinding wheel; 211, connecting frame; 212, scraper; 3, rotating frame 2; 4, transmission mechanism; 41, motor; 42, reducer; 43, transmission parts; 5, cooling mechanism; 50, scraper; 51, conveying track; 511, upper straight channel; 512, arc channel; 513, lower straight channel; 52, outer track; 521, feed port ;53. Inner baffle;531. Air inlet;54. Driving component;541. Fixed frame;542. Pressure rod;543. Left frame;544. Elastic component;545. Right frame;546. Rotating shaft;547. Cam;548. Transmission wheel;549. Transmission pin;540. Fixing pin;6. Air inlet mechanism;61. Air inlet frame;62. Lower air duct;63. Connecting pipe;64. Upper air duct;65. Fan;7. Cylinder one;8. Cylinder two;81. T-shaped rod;82. Discharging piece. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Refer to the instruction manual Figure 1-Figure 9 A sand temperature cooling device for a sand mixer comprises a frame 1, a rolling disc 11 is mounted on the frame 1, a top cover 12 is placed on the rolling disc 11, a fixed column 111 is fixedly connected to the middle of the rolling disc 11, a rotating frame 2 and a rotating frame 3 are rotatably connected to the upper end of the fixed column 111, a transmission mechanism 4 for driving the rotating frame 2 and the rotating frame 3 to rotate is mounted on the frame 1, rolling wheels 21 are mounted on both sides of the rotating frame 2, and the rolling wheels 21 are used to roll the molding sand placed inside the rolling disc 11.

[0031] In the above technical solution, if Figure 2 and Figure 3 As shown, the transmission mechanism 4 includes a motor 41 and a reducer 42 installed at the bottom of the frame 1. The output shaft of the motor 41 is connected to the input shaft of the reducer 42 through a transmission component 43. The output shaft of the reducer 42 passes through the fixed column 111 and is fixedly connected to the rotating frame 1 2 and the rotating frame 2 3.

[0032] It should be noted that the transmission component 43 is a belt transmission component. The motor 41 drives the reducer 42 through the transmission component 43, so that the reducer 42 drives the rotating frame 1 2 and the rotating frame 2 3 to rotate, and the rotating frame 1 2 drives the grinding wheels 21 on both sides to rotate, so that the grinding wheels 21 grind the molding sand in the grinding disc 11.

[0033] In the above technical solution, if Figure 7 As shown, connecting frames 211 are provided on both sides of the rotating frame 2, one end of the connecting frame 211 is rotatably connected to the rotating frame 2, and the grinding wheel 21 is rotatably connected to the other end of the connecting frame 211. The upper end of the connecting frame 211 is fixedly connected with a scraper bar 212, and the scraper bar 212 is located on the outer surface of the grinding wheel 21.

[0034] It should be noted that, through the setting of the connecting frame 211, the roller 21 can swing up and down during the rolling process, so that it can be adaptively adjusted according to the thickness of the molding sand. Through the setting of the scraper 212, the molding sand attached to the surface of the roller 21 can be scraped off.

[0035] In the above technical solution, if Figure 1 As shown, a cylinder 7 is provided on one side of the rolling disc 11, the bottom of the cylinder 7 is hinged to the rolling disc 11, the upper end of the cylinder 7 is hinged to the top cover 12, and the top cover 12 is located on one side of the cylinder 7 and is hinged to the rolling disc 11.

[0036] It should be noted that the top cover 12 can be opened and closed by extending and retracting the cylinder 7.

[0037] In this embodiment, if Figure 3-Figure 6 As shown, a cooling mechanism 5 is installed at one or both ends of the rotating frame 2 3, and the cooling mechanism 5 includes a conveying track 51, which is fixedly installed at the end of the rotating frame 2 3. The conveying track 51 includes an upper straight channel 511, an arc channel 512 and a lower straight channel 513 connected in sequence, a scraper 50 is fixedly installed at the bottom of the front end of the upper straight channel 511, and the bottom of the lower straight channel 513 is located at a rear position close to the front end of the upper straight channel 511. A feed port 521 is provided at the front end of the upper straight channel 511, and an air inlet 531 is provided at the front end of the upper straight channel 511 and at a rear position of the feed port 521; the sand temperature cooling device also includes an air inlet mechanism 6, which is used to provide cooling air from the air inlet 531 to the interior of the upper straight channel 511, and the molding sand entering from the feed port 521 is carried by the cooling air through the upper straight channel 511, the arc channel 512 and the lower straight channel 513 in sequence and discharged.

[0038] In the above technical solution, if Figure 3-Figure 4 and Figure 6 As shown, the air intake mechanism 6 includes an air intake frame 61, which is installed at the position of the upper straight channel 511 and connected to the air inlet 531. A downwind duct 62 is fixedly connected to the middle of the upper end of the rotating frame 23, and the downwind duct 62 is connected to the air intake frame 61 through a connecting pipe 63. An upper air duct 64 is fixedly connected to the middle of the top cover 12, and the bottom of the upper air duct 64 is pressed on the upper end of the downwind duct 62. A fan 65 is installed on the frame 1, and the fan 65 is connected to the upper end of the upper air duct 64.

[0039] It should be noted that when the top cover 12 is opened, the upper air duct 64 is separated from the lower air duct 62, and when the top cover 12 is closed, the bottom of the upper air duct 64 is pressed against the upper end of the lower air duct 62, and a sealing ring is provided at the contact position for sealing. The fan 65 delivers cold air from the upper air duct 64, the lower air duct 62, the connecting pipe 63, the air inlet frame 61, and the air inlet 531 into the interior of the upper linear channel 511 in sequence, as shown in FIG. Figure 6 As shown, the air inlet 531 is facing upward, so that the cooling air can blow through the upper straight channel 511, the arc channel 512 and the lower straight channel 513. Among them, the connecting pipe 63 is a hose.

[0040] In this embodiment, the implementation method is specifically as follows: when in use, the molding sand is added into the interior of the rolling disc 11 from the material port on the top cover 12, and then the rotating frame 1 2 and the rotating frame 2 3 are driven to rotate through the transmission mechanism 4, thereby rotating the rolling wheel 21 and the cooling mechanism 5, and the rolling wheel 21 rolls the molding sand, and the scraper 50 scrapes up the rolled molding sand, which can achieve the purpose of mixing on the one hand, and on the other hand, can scrape the molding sand to the position of the feed port 521. After the cooling air is blown into the upper straight channel 511, a negative pressure is formed, and the molding sand entering the feed port 521 is blown out from the upper straight channel 511, the arc channel 512 and the lower straight channel 513 in turn. In this process, the cooling air and the molding sand undergo heat exchange to achieve the purpose of sand temperature cooling.

[0041] It should be noted that if Figure 6 As shown, the purpose of making the bottom (i.e., the front end) of the lower linear channel 513 close to the rear side of the front end of the upper linear channel 511 is to make the positions of the molding sand in and out as close as possible. It can be seen that there is less molding sand between the molding sand in and out positions, and the thickness of the molding sand that can be rolled by the rolling wheel 21 cannot be too large. Therefore, if the molding sand in and out positions are too far from the ground, the amount of molding sand that can be accommodated in the rolling disc 11 will be reduced, and the processing capacity of the sand mixer will be reduced.

[0042] The above technical solution sets a conveying track 51, and sets the conveying track 51 into a structure of an upper straight channel 511, a curved channel 512 and a lower straight channel 513. On the one hand, it can lengthen the cooling path of the molding sand and improve the cooling effect. On the other hand, it can make the molding sand closer when entering and exiting the conveying track 51 during cooling, thereby avoiding a reduction in the processing capacity of the sand mixer caused by a long distance when entering and exiting the conveying track 51.

[0043] Refer to the instruction manual Figure 3-Figure 6 and Figure 8-Figure 9 The conveying track 51 is divided into two parts, an outer track 52 and an inner baffle 53, along the upper straight channel 511, the arc channel 512 and the lower straight channel 513. The inner baffle 53 is movably arranged at the inner side of the outer track 52. The cross-sectional shape of the conveying track 51 is "U"-shaped. The cooling mechanism 5 also includes a driving component 54, which is used to drive the inner baffle 53 to move toward the middle direction between the ends of the upper straight channel 511 and the lower straight channel 513.

[0044] Furthermore, the included angle between the upper linear channel 511 and the lower linear channel 513 is an acute angle, so that the front ends of the upper linear channel 511 and the lower linear channel 513 are close to each other.

[0045] In the above technical solution, the driving component 54 includes a fixed frame 541, which is fixedly installed on the inner side of the inner baffle 53. A pressure rod 542 is fixedly installed on the side of the fixed frame 541 close to the arc channel 512. A left frame 543 is fixedly installed on the rotating frame 23. The pressure rod 542 is movably inserted into the left frame 543. An elastic component 544 is sleeved on the pressure rod 542. The elastic component 544 is used to reset the left frame 543 in the direction of the arc channel 512.

[0046] Furthermore, a right frame 545 is fixedly installed on the side of the fixed frame 541 away from the arc channel 512, and a rotating shaft 546 is rotatably connected to the rotating frame 23. A cam 547 and a transmission wheel 548 are fixedly installed at both ends of the rotating shaft 546. The cam 547 is located on the inner side of the right frame 545. A plurality of transmission pins 549 are fixedly connected to the transmission wheel 548 in the circumferential direction. A plurality of fixed pins 540 are fixedly connected to the fixed column 111 in the circumferential direction. The transmission pins 549 are meshed with the fixed pins 540.

[0047] It should be noted that, during the operation of the sand mixer, the fixed column 111 and the fixed pin 540 thereon remain stationary, and the grinding wheel 21 and the cooling mechanism 5 rotate around them. Figure 4 and Figure 6 As shown, the transmission pin 549 and the fixed pin 540 are meshed with each other, so that the transmission wheel 548 and the rotating shaft 546 can rotate, and the rotating shaft 546 drives the cam 547 to rotate, and the cam 547 can push the end wall of the right frame 545. The right frame 545, the fixed frame 541, and the pressure rod 542 move together, and the inner baffle plate 53 is driven to move through the fixed frame 541, and the elastic component 544 is compressed. When the protruding part of the cam 547 leaves the end wall of the right frame 545, the pressure rod 542 and the inner baffle plate 53 are reset through the elastic component 544, wherein the elastic component 544 is a compression spring.

[0048] It should be noted that if Figure 8 As shown, the upper straight channel 511 and the lower straight channel 513 are symmetrical about the symmetry axis a, and the symmetry axis a passes through the center of the arc channel 512. The "inner baffle 53 moves toward the middle direction between the ends of the upper straight channel 511 and the lower straight channel 513" in the above technical solution refers to moving obliquely downward along the symmetry axis a.

[0049] In this embodiment, the implementation method is specifically as follows: during the operation of the sand mixer, the scraper 50 may scrape the molding sand that has not been squeezed on both sides of the grinding wheel 21 to the arc channel 512, and among these molding sands, there may be some molding sand that has agglomerated due to water absorption. These agglomerated molding sands may be blocked after entering the upper straight channel 511, the arc channel 512 and the lower straight channel 513. Therefore, during the operation, the inner baffle 53 is continuously moved back and forth along the symmetry axis a by the driving component 54. On the one hand, due to the relative movement of the inner baffle 53 and the outer track 52, friction will occur with the agglomerated molding sand at the positions of the upper straight channel 511 and the lower straight channel 513, thereby grinding the agglomerated molding sand into smaller pieces or causing it to break. In addition, since the angle between the upper straight channel 511 and the lower straight channel 513 is an acute angle, the channel height between the outer track 52 and the inner baffle 53 will decrease during the process of the inner baffle 53 moving obliquely downward along a, so that the agglomerated molding sand can be squeezed and crushed to prevent blockage. At the position of the arc channel 512, when the inner baffle 53 moves obliquely downward, as shown in FIG. Figure 8 As shown, the space at the position of the arc channel 512 will become larger, so that the molding sand blocked at the position of the arc channel 512 can move toward the direction of the downward straight channel 513.

[0050] The above technical solution divides the conveying track 51 into two parts, an outer track 52 and an inner baffle 53, and allows the inner baffle 53 to move relative to the outer track 52. If agglomerated molding sand is blocked, the volume of the agglomerated molding sand can be reduced or broken by friction and extrusion at the positions of the upper straight channel 511 and the lower straight channel 513, thereby achieving the purpose of preventing blockage. At the position of the arc channel 512, when the inner baffle 53 moves obliquely downward, its space will become larger, allowing the molding sand to pass smoothly, thereby achieving the purpose of preventing blockage.

[0051] Refer to the instruction manual Figure 2 A discharge port 112 is provided on one side of the bottom of the grinding disc 11, and a discharge piece 82 is provided on the inner side of the discharge port 112. A T-shaped rod 81 is rotatably connected to the grinding disc 11, and the bottom end of the T-shaped rod 81 is fixedly connected to the discharge piece 82. A cylinder 8 is provided on one side of the grinding disc 11, and one end of the cylinder 8 is hinged to the grinding disc 11, and the other end of the cylinder 8 is hinged to one end in the middle of the T-shaped rod 81.

[0052] It should be noted that, through the extension and retraction of the air cylinder 8, the T-shaped rod 81 can be driven to swing back and forth, and the T-shaped rod 81 drives the discharge piece 82 to open or close the discharge port 112, thereby achieving the purpose of bottom discharge.

[0053] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand temperature cooling device for a sand mixer, characterized in that: The invention comprises a frame (1), a rolling disc (11) being mounted on the frame (1), a top cover (12) being placed on the rolling disc (11), a fixing column (111) being fixedly connected to the middle of the rolling disc (11), a rotating frame 1 (2) and a rotating frame 2 (3) being rotatably connected to the upper end of the fixing column (111), a transmission mechanism (4) being mounted on the frame (1) for driving the rotating frame 1 (2) and the rotating frame 2 (3) to rotate, rolling wheels (21) being mounted on both sides of the rotating frame 1 (2), the rolling wheels (21) being used for rolling the molding sand placed inside the rolling disc (11); A cooling mechanism (5) is installed at one or both ends of the rotating frame 2 (3), the cooling mechanism (5) comprising a conveying track (51), the conveying track (51) being fixedly installed at the end of the rotating frame 2 (3), the conveying track (51) comprising an upper straight channel (511), an arc-shaped channel (512) and a lower straight channel (513) connected in sequence, a scraper (50) being fixedly installed at the bottom of the front end of the upper straight channel (511), the bottom of the lower straight channel (513) being located at a rear side position close to the front end of the upper straight channel (511), a feed port (521) being provided at the front end of the upper straight channel (511), and an air inlet (531) being provided at the front end of the upper straight channel (511) and at a rear side position of the feed port (521); The sand temperature cooling device further comprises an air inlet mechanism (6), wherein the air inlet mechanism (6) is used to provide cooling air from an air inlet (531) to the interior of the upper straight channel (511), and the molding sand entering from the feed port (521) is carried by the cooling air and sequentially passes through the upper straight channel (511), the arc-shaped channel (512), and the lower straight channel (513) and is discharged.

2. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: The conveying track (51) is divided into two parts, namely an outer track (52) and an inner baffle (53), along the upper straight channel (511), the arc channel (512) and the lower straight channel (513); the inner baffle (53) is movably arranged at an inner side of the outer track (52); the cross-sectional shape of the conveying track (51) is "U"-shaped; the cooling mechanism (5) further comprises a driving component (54); the driving component (54) is used to drive the inner baffle (53) to move in a direction between the ends of the upper straight channel (511) and the lower straight channel (513).

3. The sand temperature cooling device for a sand mixer according to claim 2 is characterized in that: The included angle between the upper linear channel (511) and the lower linear channel (513) is an acute angle, so that the front ends of the upper linear channel (511) and the lower linear channel (513) are close to each other.

4. The sand temperature cooling device for a sand mixer according to claim 3 is characterized in that: The driving component (54) comprises a fixed frame (541), the fixed frame (541) being fixedly mounted on the inner side of the inner baffle (53), a pressure rod (542) being fixedly mounted on a side of the fixed frame (541) close to the arc-shaped channel (512), a left frame (543) being fixedly mounted on the second rotating frame (3), the pressure rod (542) being movably plugged into the left frame (543), an elastic component (544) being sleeved on the pressure rod (542), the elastic component (544) being used to reset the left frame (543) in the direction of the arc-shaped channel (512).

5. The sand temperature cooling device for a sand mixer according to claim 4 is characterized in that: A right frame (545) is fixedly mounted on a side of the fixed frame (541) away from the arc-shaped channel (512); a rotating shaft (546) is rotatably connected to the rotating frame (3); a cam (547) and a transmission wheel (548) are respectively fixedly mounted on both ends of the rotating shaft (546); the cam (547) is located on the inner side of the right frame (545); a plurality of transmission pins (549) are fixedly connected to the transmission wheel (548) in a circumferential direction; a plurality of fixing pins (540) are fixedly connected to the fixing column (111) in a circumferential direction; and the transmission pins (549) are meshed with the fixing pins (540).

6. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: The air intake mechanism (6) comprises an air intake frame (61), the air intake frame (61) being installed at the position of the upper straight channel (511) and being connected to the air inlet (531); a lower air duct (62) is fixedly connected to the middle of the upper end of the rotating frame (3); the lower air duct (62) is connected to the air intake frame (61) via a connecting pipe (63); an upper air duct (64) is fixedly connected to the middle of the top cover (12); the bottom of the upper air duct (64) is pressed against the upper end of the lower air duct (62); a fan (65) is installed on the frame (1), and the fan (65) is connected to the upper end of the upper air duct (64).

7. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: A connecting frame (211) is provided on both sides of the rotating frame one (2); one end of the connecting frame (211) is rotatably connected to the rotating frame one (2); the rolling wheel (21) is rotatably connected to the other end of the connecting frame (211); a scraper bar (212) is fixedly connected to the upper end of the connecting frame (211); the scraper bar (212) is located on the outer surface of the rolling wheel (21).

8. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: The transmission mechanism (4) comprises a motor (41) and a reducer (42) mounted at the bottom of the frame (1); the output shaft of the motor (41) is transmission-connected to the input shaft of the reducer (42) via a transmission component (43); the output shaft of the reducer (42) passes through a fixed column (111) and is fixedly connected to the rotating frame 1 (2) and the rotating frame 2 (3).

9. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: A discharge port (112) is provided on one side of the bottom of the milling disc (11), a discharge piece (82) is provided on the inner side of the discharge port (112), a T-shaped rod (81) is rotatably connected to the milling disc (11), the bottom end of the T-shaped rod (81) is fixedly connected to the discharge piece (82), and a second cylinder (8) is provided on one side of the milling disc (11), one end of the second cylinder (8) is hinged to the milling disc (11), and the other end of the second cylinder (8) is hinged to one end of the middle portion of the T-shaped rod (81).

10. The sand temperature cooling device for a sand mixer according to claim 1, characterized in that: A cylinder one (7) is provided on one side of the milling disc (11); the bottom of the cylinder one (7) is hinged to the milling disc (11); the upper end of the cylinder one (7) is hinged to a top cover (12); and the top cover (12) is located on one side of the cylinder one (7) and is hinged to the milling disc (11).

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