Foundry resin sand mixing device

Abstract

The invention belongs to the technical field of foundry sand, and particularly relates to a foundry resin sand mixing device which comprises a stirring bin, the stirring bin is fixedly mounted on a support, a motor mounting plate is further fixedly mounted at the upper end of the support, a power device is fixedly mounted on the upper end face of the motor mounting plate, and the stirring bin comprises a stirring barrel fixedly connected with the support. Rotating shaft supporting structures are fixedly installed at the two ends of the stirring barrel respectively, a feeding port A, a feeding port B and an observation port are formed in the upper side face of the stirring barrel, two sampling ports are formed in the side face of the stirring barrel, and baffles are fixedly installed at the two ends of the stirring barrel respectively. By optimizing the structural design of the stirring blades and adopting the common blade combination arrangement of the transverse rods and the longitudinal rods, resin sand flows in multiple directions in the stirring process, the mixing uniformity of materials is remarkably improved, and sufficient contact reaction of resin and sand grains is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of foundry sand, in particular to a foundry resin sand mixing device. Background Art

[0002] The resin sand mixer is a key piece of equipment in casting production, used to evenly mix resin, curing agent, and sand. The mixing effect directly impacts casting quality. Currently, conventional sand mixers suffer from issues such as uneven mixing, limited stirring range, and premature contact between resin and curing agent, leading to partial solidification. These issues affect the coating quality and performance of the resin sand.

[0003] For example, Chinese patent publication number CN114289682B (A Foundry Resin-Sand Mixing Device) discloses a device that crushes and mixes solid resin and sand using multi-stage crushing tools. While this device achieves continuous crushing of raw materials, its design is only suitable for crushing and mixing solid materials and cannot meet the requirements for dynamic mixing of liquid resin and sand. Furthermore, it lacks control over the step-by-step addition of resin and curing agent, which can easily lead to uneven mixing or partial curing.

[0004] For example, Chinese patent publication number CN117139556A (A Foundry Resin Sand Mixing Device) discloses a sand mixing device that utilizes a spiral lift and spraying mechanism. A rotating shaft drives a stirring mechanism to achieve multi-layer mixing. While this device improves mixing uniformity, its spraying mechanism relies on a complex gear transmission structure. This can easily cause transmission jamming due to resin adhesion over time, resulting in high maintenance costs and a complex structure, hindering continuous and efficient production.

[0005] For example, Chinese patent publication number CN214867031U (A Mixing and Stirring Device for Resin Sand for Foundry) discloses a sand mixing device that utilizes a vibrating hopper and stirring mechanism, using a vibrating motor to achieve uniform feeding of sand. However, the device's stirring mechanism relies solely on a single rotating shaft and a transverse stirring rod, resulting in a limited mixing range and inability to fully stir the material. Furthermore, the method for adding resin and curing agent is not optimized, resulting in uneven mixing.

[0006] In summary, the existing technology still lacks a casting resin sand mixing device with a simple structure, efficient mixing, and the ability to avoid premature contact between the resin and the curing agent. Improvements are urgently needed to meet the production needs of high-quality resin sand. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the present invention provides a foundry resin sand mixing device, which solves the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a foundry resin sand mixing device, comprising a mixing chamber, the mixing chamber being fixedly mounted on a bracket, a motor mounting plate being fixedly mounted on the upper end of the bracket, a power device being fixedly mounted on the upper end surface of the motor mounting plate, the mixing chamber comprising a mixing barrel fixedly connected to the bracket, a rotating shaft support structure being fixedly mounted on both ends of the mixing barrel, a feed port A, a feed port B and an observation port being provided on the upper side surface of the mixing barrel, two sampling ports being provided on the side surface of the mixing barrel, baffles being fixedly mounted on both ends of the mixing barrel, a discharge port and a material guide port being provided on the lower end surface of the mixing barrel, a mixing structure being rotatably mounted inside the mixing barrel and between the two rotating shaft support structures, and the rotating shaft support structure on one side is also connected to the power device.

[0009] As a preferred technical solution of the present invention, the material guide port includes a transmission shaft rotatably connected to the two rotating shaft support structures, and a stirring blade is fixedly installed on the transmission shaft; The stirring blade assembly includes a plurality of stirring blades; The transmission shaft includes an intermediate connecting shaft, and a connecting shaft A and a connecting shaft B are fixedly mounted on both ends of the intermediate connecting shaft.

[0010] As a preferred technical solution of the present invention, the connecting shaft A includes a support rod rotatably connected to a rotating shaft support structure, a limit ring is fixedly installed on one side of the support rod, and an insertion rod A is fixedly installed on the other side of the limit ring. The outer side of the insertion rod A is also provided with a plurality of plug-in fixing holes A; The connecting shaft B includes a transmission rod fixedly connected to another power device, the transmission rod is provided with a keyway that cooperates with the power device, a limit ring is fixedly installed on one side of the transmission rod, and an insertion rod B is fixedly installed on one side of the limit ring, and the insertion rod B is provided with a plurality of insertion rod fixing holes B; The intermediate connecting shaft includes an intermediate blade connecting shaft with an insertion rod A and an insertion rod B fixedly installed at both ends. A plurality of transverse blade connecting rods and longitudinal blade connecting rods are fixedly installed on the circumferential side of the intermediate blade connecting shaft, and a plurality of plug-in fixing holes C are respectively provided at both ends of the intermediate blade connecting shaft.

[0011] As a preferred technical solution of the present invention, the rotating shaft support structure includes a fixed plate fixedly installed with the baffle, a mounting plate fixedly installed inside the fixed plate, a transmission shaft placement device and a connecting sleeve fixedly installed on the upper end surface of the mounting plate, and a bottom fixed plate fixedly installed between the fixed plate and the baffle.

[0012] As a preferred technical solution of the present invention, the power device includes a power device bracket fixedly mounted on the upper end surface of the motor mounting plate, a bushing fixedly mounted on one end of the power device bracket, one end of the transmission device fixedly mounted on the other end of the power device bracket, a power device fixedly mounted on the other end of the transmission device, and the transmission device fixedly connected to the transmission rod.

[0013] As a preferred technical solution of the present invention, the sampling port further includes a sampling port sealer, the sampling port sealer includes a bottom mounting seat A fixedly mounted on the mixing barrel, a rotating device fixedly mounted on the upper end surface of the bottom mounting seat A, a rotating connection rotatably connected to the rotating device, and a tensioning device mounted on the rotating connection, the sampling port sealer further includes a bottom mounting seat B fixedly mounted on the cover plate, the bottom mounting seat B cooperates with the tensioning device to lock the cover plate; The transverse blade connecting rod and the longitudinal blade connecting rod are jointly equipped with stirring blades.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention optimizes the structural design of the mixing blades and adopts a combined arrangement of blades with both transverse and longitudinal rods, so that the resin sand forms a multi-directional flow during the mixing process, significantly improving the mixing uniformity of the materials and ensuring sufficient contact and reaction between the resin and the sand particles.

[0015] 2. This invention, by setting up a dual-inlet structure of feed port A and feed port B, can realize the diverted feeding of resin and sand particles to avoid material accumulation. At the same time, with the special design of the feed guide port, different components can be pre-mixed before entering the stirring area, thereby improving mixing efficiency.

[0016] 3. The unique design of the discharge port and the guide port of this invention enables the mixed resin sand to be discharged quickly while maintaining the continuity of the mixing process, effectively solving the problems of uneven mixing and low efficiency in traditional sand mixing devices.

[0017] 4. In this invention, the arrangement of the observation port and the sampling port facilitates real-time monitoring of the mixing process. The special structural design of the sampling port sealer ensures that the sampling process does not affect the mixing quality, provides a basis for adjusting process parameters, and ensures the stability of the final product.

[0018] 5. This invention optimizes the coordination of the transmission system and the stirring structure, so that the stirring blades can maintain a high mixing efficiency when running at a low speed, reducing energy consumption, while ensuring that the performance of the resin sand will not be damaged due to excessive shearing during the mixing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the present invention; Figure 2It is a schematic diagram of the structure of the present invention; Figure 3 for Figure 2 A magnified view of point A; Figure 4 This is a schematic diagram of the sampling port sealer; Figure 5 It is a schematic diagram of the structure of the present invention; Figure 6 It is a schematic diagram of the structure of the present invention; Figure 7 Schematic diagram of the internal structure of the present invention; Figure 8 Schematic diagram of the stirring structure; Figure 9 Schematic diagram of the stirring blade; Figure 10 It is a schematic diagram of the structure of the present invention; Figure 11 It is a schematic diagram of the structure of the present invention; Figure 12 It is a schematic diagram of the structure of the present invention; Figure 13 for Figure 12 Enlarged view of point A; Figure 14 It is a schematic diagram of the structure of the present invention; Figure 15 It is a structural schematic diagram of the present invention.

[0020] In the picture: 1. Mixing chamber; 10. Discharge port; 11. Feed port A; 12. Feed port B; 13. Observation port; 14. Sampling port; 141. Sampling port sealer; 1411. Handle; 1412. Rotating device; 1413. Bottom mounting seat A; 1414. Bottom mounting seat B; 1415. Tensioning device; 1416. Rotating connection; 15. Rotating shaft support structure; 151. Fixing plate; 152. Drive shaft placement device; 153. Connecting sleeve; 154. Bottom fixing plate; 155. Mounting plate; 16. Baffle; 17. Mixing barrel; 18. Feeding port; 19. Mixing structure; 191. Drive shaft; 1911. Connecting shaft A; 19111. Insert rod A; 19112. Limiting ring; 19113, support rod; 19114, plug-in fixing hole A; 1912, intermediate connecting shaft; 19121, intermediate blade connecting shaft; 19122, transverse blade connecting rod; 19123, plug-in fixing hole C; 19124, longitudinal blade connecting rod; 1913, connecting shaft B; 19131, transmission rod; 19132, keyway; 19133, limiting ring; 19134, plug rod B; 19135, plug rod fixing hole B; 192, stirring blade assembly; 193, stirring blade; 3, bracket; 4, power unit; 41, power unit; 42, transmission device; 43, bushing; 44, power unit bracket; 5, motor mounting plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention. Example

[0022] See also Figure 1-15 The present invention provides the following technical solutions: a foundry resin sand mixing device, comprising a mixing chamber 1, the mixing chamber 1 is fixedly mounted on a bracket 3, a motor mounting plate 5 is also fixedly mounted on the upper end of the bracket 3, a power device 4 is fixedly mounted on the upper end surface of the motor mounting plate 5, the mixing chamber 1 comprises a mixing barrel 17 fixedly connected to the bracket 3, a rotating shaft support structure 15 is fixedly mounted on both ends of the mixing barrel 17, a feed port A11, a feed port B12 and an observation port 13 are provided on the upper side of the mixing barrel 17, two sampling ports 14 are provided on the side of the mixing barrel 17, baffles 16 are fixedly mounted on both ends of the mixing barrel 17, a discharge port 10 and a material guide port 18 are provided on the lower end surface of the mixing barrel 17, a mixing structure 19 is rotatably mounted inside the mixing barrel 17 and between the two rotating shaft support structures 15, and the rotating shaft support structure 15 on one side is also connected to the power device 4.

[0023] In this embodiment, the connection between the mixing bin 1 and the bracket 3 is welded, the bracket 3 is used to support the structure of the entire equipment, the motor mounting plate 5 is installed on the bracket 3 by bolt connection, and the power unit 4 is also installed on the motor mounting plate 5 by bolt connection. The power unit 4 is used to provide power to the mixing bin 1, and the rotating shaft support structure 15 is installed at both ends of the mixing barrel 17 by welding. The feed port A11 and the feed port B12 respectively convey two different materials for mixing. Such separate placement allows the device to perform a mixing at the very beginning, and the baffle 16 is installed on both sides of the mixing barrel 17 by bolt connection.

[0024] Specifically, the material guide port 18 includes a transmission shaft 191 rotatably connected to the two rotating shaft support structures 15 , and a stirring blade 193 is fixedly mounted on the transmission shaft 191; The stirring blade assembly 192 includes a plurality of stirring blades 193; The transmission shaft 191 includes an intermediate connecting shaft 1912 , and a connecting shaft A 1911 and a connecting shaft B 1913 are fixedly mounted on both ends of the intermediate connecting shaft 1912 .

[0025] In this embodiment, the material guide port 18 includes a transmission shaft 191 and a stirring blade assembly 192. The transmission shaft 191 is rotatably connected to the rotating shaft support structure 15 via bearings at both ends. Connecting shaft A 1911 and connecting shaft B 1913 are respectively fixed to the ends of the intermediate connecting shaft 1912. The three are fixedly connected by a key connection to ensure stable transmission.

[0026] The mixing blade assembly 192 consists of multiple mixing blades 193, which are welded or bolted to the drive shaft 191 and evenly distributed axially and circumferentially to enhance the mixing effect. When the drive shaft 191 rotates, the mixing blades 193 rotate, ensuring that the material in the material guide port is fully mixed and preventing clogging.

[0027] Specifically, the connecting shaft A1911 includes a support rod 19113 rotatably connected to a rotating shaft support structure 15. A limit ring 19112 is fixedly installed on one side of the support rod 19113, and an insertion rod A19111 is fixedly installed on the other side of the limit ring 19112. The outer side of the insertion rod A19111 is also provided with a plurality of insertion and fixing holes A19114. The connecting shaft B1913 includes a transmission rod 19131 fixedly connected to another power unit 4. The transmission rod 19131 is provided with a keyway 19132 that cooperates with the power unit 4. A limit ring 19133 is fixedly installed on one side of the transmission rod 19131. A plug rod B19134 is fixedly installed on one side of the limit ring 19133. The plug rod B19134 is provided with a plurality of plug rod fixing holes B19135. The intermediate connecting shaft 1912 includes an intermediate blade connecting shaft 19121 with an insertion rod A19111 and an insertion rod B19134 fixedly installed at both ends. A number of transverse blade connecting rods 19122 and longitudinal blade connecting rods 19124 are fixedly installed on the circumference of the intermediate blade connecting shaft 19121, and a number of plug-in fixing holes C19123 are respectively provided at both ends of the intermediate blade connecting shaft 19121.

[0028] In this embodiment, in the connecting shaft A1911, one end of the support rod 19113 is rotatably connected to the rotating shaft support structure 15 through a bearing assembly, and the other side is welded and fixed to the limiting ring 19112, and the welding point is processed to ensure strength. The limiting ring 19112 and the insertion rod A19111 are an integrally formed structure. The insertion rod A19111 is rigidly connected to the intermediate connecting shaft 1912 through the plug-in fixing hole A19114 on the outer side and the bolts are passed through the corresponding holes to firmly fix the two. One end of the transmission rod 19131 of the connecting shaft B1913 is fixed to the output end of the power device 4 through a flange and the flange holes are aligned and fastened with high-strength bolts. The keyway 19132 on its outer surface cooperates with the flat key of the output shaft of the power device 4 to form a key connection to transmit torque. The other side of the transmission rod 19131 is welded and fixed to the limiting ring 19133, and the limiting ring 19133 is fixed to the insertion rod B19134 Molded in one piece, the plug rod B19134 is stably connected to the intermediate connecting shaft 1912 through the plug rod fixing hole B19135 with bolts. The intermediate blade connecting shaft 19121 of the intermediate connecting shaft 1912 has hexagonal slots at both ends, which are respectively plugged with the plug rod A19111 and the plug rod B19134 to limit relative rotation. The plug-in fixing holes C19123 at both ends are aligned with the corresponding hole positions. The intermediate blade connecting shaft 19121 is fixed to the plug rod A19111 and the plug rod B19134 by bolts. The horizontal and longitudinal blade connecting rods on the circumference of the intermediate blade connecting shaft 19121 are fixed to it by welding to form a stable whole for installing the blade assembly.

[0029] Specifically, the rotating shaft support structure 15 includes a fixed plate 151 fixedly installed with the baffle 16, a mounting plate 155 fixedly installed inside the fixed plate 151, a transmission shaft placement device 152 and a connecting sleeve 153 fixedly installed on the upper end surface of the mounting plate 155, and a bottom fixing plate 154 fixedly installed between the fixed plate 151 and the baffle 16.

[0030] In this embodiment, in the connecting shaft A1911, one end of the support rod 19113 is rotatably connected to the rotating shaft support structure 15 through a bearing assembly, and the other side is welded and fixed to the limiting ring 19112, and the welding point is processed to ensure strength. The limiting ring 19112 and the plug rod A19111 are an integrally formed structure. The plug rod A19111 is rigidly connected to the intermediate connecting shaft 1912 through the plug-in fixing hole A19114 on the outer side and the bolt is passed through the corresponding hole to firmly fix the two. The keyway 19132 on its outer surface cooperates with the flat key of the output shaft of the power device 4 to form a key connection to transmit torque. The other side of the transmission rod 19131 is welded and fixed to the limiting ring 19133. The limiting ring 19133 and the plug rod B19134 are integrally formed. The plug rod B19134 is bolted to the intermediate connecting shaft 1912 through the plug rod fixing hole B19135. Stable connection, the middle blade connecting shaft 19121 of the middle connecting shaft 1912 has hexagonal slots at both ends, which are respectively plugged into the plug rod A19111 and the plug rod B19134 to limit relative rotation, and the plug-in fixing holes C19123 at both ends are aligned with the corresponding hole positions, and the middle blade connecting shaft 19121 is fixed to the plug rod A19111 and the plug rod B19134 by bolts. The transverse and longitudinal blade connecting rods on the circumference of the middle blade connecting shaft 19121 are fixed to it by welding to form a stable whole for installing the blade assembly. In the rotating shaft support structure 15, the fixing plate 151 and the baffle 16 are fixed with bolts, and the bolts are evenly distributed on the edges of the two to ensure a stable connection. The inside of the fixing plate 151 is fixed to the mounting plate 155 by welding, and the welding surface is flat and tight. The upper end surface of the mounting plate 155 is bolted to the transmission shaft placement device 152 and the connecting sleeve 153, and the hole positions are precisely aligned to ensure installation accuracy. The fixing plate 151 The bottom fixing plate 154 between the baffle 16 is fixedly connected to both by welding, and the welding points are reinforced to improve the overall structural strength.

[0031] Specifically, the power device 4 includes a power device bracket 44 fixedly mounted on the upper end surface of the motor mounting plate 5, a bushing 43 is fixedly mounted on one end of the power device bracket 44, one end of the transmission device 42 is fixedly mounted on the other end of the power device bracket 44, and a power device 41 is fixedly mounted on the other end of the transmission device 42. The transmission device 42 is fixedly connected to the transmission rod 19131.

[0032] In this embodiment, in the power device 4, the power device bracket 44 is fixedly mounted on the upper end surface of the motor mounting plate 5 by a bolt assembly. The bolt assemblies are evenly distributed to ensure a stable installation. One end of the power device bracket 44 is fixedly mounted with the bushing 43 by an interference fit. The joint surface of the two is coated with sealant to enhance the connection sealing. The other end of the power device bracket 44 is connected to one end of the transmission device 42 by a flange. A sealing gasket is installed between the flanges and then fastened with high-strength bolts. The other end of the transmission device 42 is fixedly mounted with the power device 41 by a key connection and bolt fastening to ensure efficient and stable power transmission. The side of the transmission device 42 away from the power device 41 is fixedly connected to the transmission rod 19131 by a coupling. The two ends of the coupling are respectively fixed to the connecting ends of the transmission device 42 and the transmission rod 19131 by set screws to ensure that the two rotate synchronously.

[0033] Specifically, the sampling port 14 also includes a sampling port sealer 141, which includes a bottom mounting seat A1413 fixedly mounted on the mixing barrel 17, a rotating device 1412 fixedly mounted on the upper end face of the bottom mounting seat A1413, a rotating connection 1416 is also rotatably connected to the rotating device 1412, and a tensioning device 1415 is also installed on the rotating connection 1416. The sampling port sealer 141 also includes a bottom mounting seat B1414 fixedly mounted on the cover plate, and the bottom mounting seat B1414 cooperates with the tensioning device 1415 to lock the cover plate; the transverse blade connecting rod and the longitudinal blade connecting rod are jointly equipped with a stirring blade.

[0034] In this embodiment, in the sampling port sealer 141 included in the sampling port 14, the bottom mounting seat A1413 is fixedly installed at a preset position of the mixing barrel 17 by bolts, and its upper end surface is fixedly connected to the rotating device 1412 by welding, and the welding edge is polished. The rotating component of the rotating device 1412 forms a rotational fit with one end of the rotating connection 1416, and the rotating connection 1416 can achieve multi-angle rotation around the rotating device 1412. The other end of the rotating connection 1416 is connected to the tensioning device 1415 by a pin shaft, and the tensioning device 1415 can be extended and retracted along its own axial direction to adjust the length. The bottom mounting seat B1414 of the sampling port sealer 141 is welded and fixed to the corresponding position of the cover plate. The bottom mounting seat B1414 is provided with a card slot adapted to the tensioning device 1415. The tensioning device 1415 is connected to the bottom mounting seat B1414 by being inserted into the card slot and tightened. The cover is tightly fitted on the sampling port 14. The ends of the transverse blade connecting rod and the longitudinal blade connecting rod are both provided with threaded holes. The mounting holes of the stirring blades are aligned with the threaded holes and are fixedly connected to the transverse blade connecting rod and the longitudinal blade connecting rod respectively by bolts, and a gasket is installed at the connection between the stirring blade and the connecting rod to enhance the stability of the connection.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A foundry resin sand mixing device, comprising a mixing chamber (1), wherein the mixing chamber (1) is fixedly mounted on a bracket (3), a motor mounting plate (5) is fixedly mounted on the upper end of the bracket (3), and a power device (4) is fixedly mounted on the upper end surface of the motor mounting plate (5), characterized in that: The mixing chamber (1) comprises a mixing barrel (17) fixedly connected to a bracket (3), a rotating shaft support structure (15) being fixedly mounted at both ends of the mixing barrel (17), a feed port A (11), a feed port B (12) and an observation port (13) being provided on the upper side of the mixing barrel (17), two sampling ports (14) being provided on the side of the mixing barrel (17), baffles (16) being fixedly mounted at both ends of the mixing barrel (17), a discharge port (10) and a material guide port (18) being provided on the lower end face of the mixing barrel (17), a mixing structure (19) being rotatably mounted inside the mixing barrel (17) and between the two rotating shaft support structures (15), and the rotating shaft support structure (15) on one side is also connected to a power device (4).

2. A foundry resin sand mixing device according to claim 1, characterized in that: The stirring structure (18) includes a transmission shaft (191) rotatably connected to the two rotating shaft support structures (15), and a stirring blade (193) is fixedly mounted on the transmission shaft (191); The stirring blade assembly (192) includes a plurality of stirring blades (193); The transmission shaft (191) comprises an intermediate connecting shaft (1912), and a connecting shaft A (1911) and a connecting shaft B (1913) are respectively fixedly mounted on both ends of the intermediate connecting shaft (1912).

3. A foundry resin sand mixing device according to claim 2, characterized in that: The connecting shaft A (1911) comprises a support rod (19113) rotatably connected to a rotating shaft support structure (15); a limiting ring (19112) is fixedly mounted on one side of the support rod (19113); an inserting rod A (19111) is fixedly mounted on the other side of the limiting ring (19112); and a plurality of inserting and fixing holes A (19114) are further provided on the outer side surface of the inserting rod A (19111); The connecting shaft B (1913) includes a transmission rod (19131) fixedly connected to another power device (4); the transmission rod (19131) is provided with a keyway (19132) that cooperates with the power device (4); a limiting ring (19133) is fixedly installed on one side of the transmission rod (19131); an insertion rod B (19134) is fixedly installed on one side of the limiting ring (19133); and a plurality of insertion rod fixing holes B (19135) are provided on the insertion rod B (19134); The intermediate connecting shaft (1912) comprises an intermediate blade connecting shaft (19121) with an insert rod A (19111) and an insert rod B (19134) fixedly mounted at both ends, a plurality of transverse blade connecting rods (19122) and longitudinal blade connecting rods (19124) fixedly mounted on the circumference of the intermediate blade connecting shaft (19121), and a plurality of plug-in fixing holes C (19123) are respectively provided at both ends of the intermediate blade connecting shaft (19121).

4. A foundry resin sand mixing device according to claim 1, characterized in that: The rotating shaft support structure (15) comprises a fixing plate (151) fixedly mounted on the baffle (16); a mounting plate (155) is fixedly mounted inside the fixing plate (151); a transmission shaft placement device (152) and a connecting sleeve (153) are fixedly mounted on the upper end surface of the mounting plate (155); and a bottom fixing plate (154) is fixedly mounted between the fixing plate (151) and the baffle (16).

5. The foundry resin sand mixing device according to claim 1, characterized in that: The power device (4) includes a power device bracket (44) fixedly mounted on the upper end surface of the motor mounting plate (5), a bushing (43) fixedly mounted on one end of the power device bracket (44), one end of a transmission device (42) fixedly mounted on the other end of the power device bracket (44), a power device (41) fixedly mounted on the other end of the transmission device (42), and the transmission device (42) fixedly connected to the transmission rod (19131).

6. A foundry resin sand mixing device according to claim 1, characterized in that: The sampling port (14) further includes a sampling port sealer (141), which includes a bottom mounting seat A (1413) fixedly mounted on the mixing barrel (17), a rotating device (1412) fixedly mounted on the upper end surface of the bottom mounting seat A (1413), a rotating connection (1416) rotatably connected to the rotating device (1412), and a tensioning device (1415) mounted on the rotating connection (1416), and the sampling port sealer (141) further includes a bottom mounting seat B (1414) fixedly mounted on the cover plate, and the bottom mounting seat B (1414) cooperates with the tensioning device (1415) to lock the cover plate.

7. The foundry resin sand mixing device according to claim 3, characterized in that: The transverse blade connecting rod (19122) and the longitudinal blade connecting rod (19124) are jointly equipped with a stirring blade (193).

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