A precision casting engineering sand mixer

Abstract

The utility model relates to sand mixing equipment technical field, and specifically discloses a sand mixer for precision casting engineering, including cylinder, the sand mixing cylinder is rotationally installed in the cylinder, is equipped with a plurality of sieve holes in the sand mixing cylinder outer wall, a plurality of first stirring rods are installed in the sand mixing cylinder inner wall staggeredly, a plurality of mounting pieces are installed to the first stirring rod outer wall, the second stirring rod is installed to mounting piece side, the sand mixing cylinder outer wall is equipped with the feed inlet, and the first electric gate is installed in the feed inlet. The utility model can integrate the screening and sand mixing treatment of the sand for the pattern into one, need not carry out sand mixing treatment to the sand for the pattern after screening, can integrate the screening and sand mixing treatment of the sand for the pattern into one step, improve the sand mixing efficiency of the sand for the pattern, avoid the influence of the sand mixing efficiency of the sand for the pattern due to the need of screening the sand for the pattern.

Description

Technical Field

[0001] This utility model relates to the field of sand mixing equipment technology, and in particular to a sand mixer for precision casting engineering. Background Technology

[0002] Precision casting refers to the general term for processes that produce castings with precise dimensions. Compared to traditional sand casting, precision casting produces castings with more accurate dimensions and better surface finish.

[0003] A search revealed a Chinese patent with application number 202122025711.2, which discloses "a sand mixer with high mixing efficiency for precision casting engineering, including a mixing box, a power box fixedly connected to the top of the mixing box, a drive box fixedly connected to the bottom of the mixing box, and a first motor fixedly connected to the right side of the top of the drive box cavity". However, when mixing molding sand, the above-mentioned sand mixer needs to screen the molding sand first to remove the excessively large particles to ensure that the particle diameter of the remaining molding sand is qualified, and then mix the molding sand. This requires two steps, which affects the mixing efficiency of the molding sand. Therefore, in order to solve this problem, a sand mixer for precision casting engineering is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sand mixer for precision casting engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sand mixer for precision casting includes a cylinder, in which a sand mixing cylinder is rotatably mounted. The outer wall of the sand mixing cylinder has several sieve holes. Several first stirring rods are alternately installed on the inner wall of the sand mixing cylinder. Several mounting plates are installed on the outer wall of each first stirring rod, and second stirring rods are installed on the sides of the mounting plates. A feed inlet is located on the outer wall of the sand mixing cylinder, and a first electric gate is installed inside the feed inlet. A feed box is installed at the top of the outer wall of the cylinder, and a connecting pipe is connected to the bottom of the feed box. The end of the connecting pipe is inserted into the cylinder, and when the feed inlet is directly above the sand mixing cylinder, the end of the connecting pipe is directly above the feed inlet.

[0006] Preferably, a motor is installed on the side of the cylinder, and the output shaft of the motor is inserted into the cylinder and connected to the sand mixing cylinder.

[0007] Preferably, a fixing rod is installed on both sides of the sand mixing cylinder, and a slider is installed at the end of the fixing rod away from the sand mixing cylinder. An annular groove is opened on both sides of the inner wall of the cylinder, and the slider is slidably installed in the annular groove.

[0008] Preferably, the output shaft of the motor is equipped with a reinforcing block, which is installed on the side of the sand mixing cylinder. A protective shell is installed on the side of the cylinder closest to the motor, and the motor is located inside the protective shell.

[0009] Preferably, the outer wall of the cylinder has a discharge port, and a first sealing plate is hinged to the outer wall of the cylinder. The first sealing plate is used to open or close the discharge port.

[0010] Preferably, the outer wall of the mixing cylinder has a first opening, a second electric gate is installed in the first opening, and a third electric gate is installed in the connecting pipe.

[0011] Preferably, the outer wall of the cylinder has a second opening, and a second sealing plate is hinged to the outer wall of the cylinder. The second sealing plate is used to open or close the second opening, and when the first opening is located directly below the mixing cylinder, the second opening is located directly below the first opening.

[0012] Preferably, an installation block is installed at the bottom of the outer wall of the cylinder, a support plate is installed at the bottom of the installation block, a base plate is installed at the bottom of the support plate, a collection box is placed on the base plate, the collection box is located directly below the second opening, and two sets of installation holes are symmetrically opened at the top of the base plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the first and second stirring rods are used to stir and mix the molding sand in the mixing cylinder. This allows for the mixing of the molding sand. While the molding sand is being mixed, the molding sand rotates within the mixing cylinder due to the rotation of the cylinder. The molding sand in the mixing cylinder can be screened using the sieve holes on the outer wall of the mixing cylinder. Molding sand particles with a diameter larger than the sieve hole diameter can be screened into the mixing cylinder, while molding sand particles with a diameter smaller than the sieve hole diameter can fall into the cylinder through the sieve holes. This integrates the screening and mixing of molding sand into one step, eliminating the need for screening before mixing. This improves the mixing efficiency of the molding sand and avoids the impact on the mixing efficiency caused by the need for screening.

[0014] 2: In this utility model, the output shaft of the motor rotates, causing the mixing cylinder to rotate until the first opening is rotated to the position directly below the mixing cylinder and then stops. At this time, the second sealing plate is opened and the second electric gate is opened. The molding sand with excessively large particle diameter in the mixing cylinder can fall into the collection box through the first and second openings. The collection box is used to collect and process the molding sand with excessively large particle diameter in the mixing cylinder. Attached Figure Description

[0015] Figure 1 This is a first-view structural schematic diagram of a sand mixer for precision casting engineering proposed in this utility model. Figure 2 This is a second-view structural schematic diagram of a sand mixer for precision casting engineering proposed in this utility model. Figure 3This is a partial sectional view of the cylinder of a sand mixer for precision casting engineering proposed in this utility model; Figure 4 for Figure 3 Enlarged view of part A in the middle; Figure 5 for Figure 3 A magnified view of part B in the middle.

[0016] In the diagram: 1. Cylinder; 2. Feed box; 3. Motor; 4. Protective shell; 5. Support plate; 6. Base plate; 7. Mounting hole; 8. Collection box; 9. Mounting block; 10. First sealing plate; 11. Second sealing plate; 12. Reinforcing block; 13. Sand mixing cylinder; 14. First stirring rod; 15. Connecting pipe; 16. Mounting plate; 17. Second stirring rod; 18. First electric gate; 19. Second electric gate; 20. Fixed rod; 21. Sliding block; 22. Annular groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-5 A sand mixer for precision casting engineering includes a cylinder 1, a sand mixing cylinder 13 rotatably installed inside the cylinder 1, a plurality of sieve holes on the outer wall of the sand mixing cylinder 13, a plurality of first stirring rods 14 alternately installed on the inner wall of the sand mixing cylinder 13, a plurality of mounting plates 16 installed on the outer wall of the first stirring rods 14, and second stirring rods 17 installed on the side of the mounting plates 16. A feed inlet is opened on the outer wall of the sand mixing cylinder 13, and a first electric gate 18 is installed in the feed inlet. A feed box 2 is installed on the top of the outer wall of the cylinder 1, and a connecting pipe 15 is connected to the bottom end of the feed box 2. The end of the connecting pipe 15 is inserted into the cylinder 1, and when the feed inlet is located directly above the sand mixing cylinder 13, the end of the connecting pipe 15 is located directly above the feed inlet.

[0019] As a technical optimization of this utility model, a motor 3 is installed on the side of the cylinder 1. The output shaft of the motor 3 is inserted into the cylinder 1 and connected to the sand mixing cylinder 13. The output shaft of the motor 3 can drive the sand mixing cylinder 13 to rotate.

[0020] As a technical optimization of this utility model, a fixing rod 20 is installed on both sides of the sand mixing cylinder 13. A slider 21 is installed at the end of the fixing rod 20 away from the sand mixing cylinder 13. An annular groove 22 is opened on both sides of the inner wall of the cylinder 1. The slider 21 is slidably installed in the annular groove 22. Through the cooperation of the slider 21 and the annular groove 22, the sand mixing cylinder 13 can be guided when rotating.

[0021] As a technical optimization of this utility model, the output shaft of the motor 3 is equipped with a reinforcing block 12, which is installed on the side of the mixing cylinder 13. A protective shell 4 is installed on the side of the cylinder 1 close to the motor 3, and the motor 3 is located inside the protective shell 4. The reinforcing block 12 can increase the connection strength between the output shaft of the motor 3 and the mixing cylinder 13, and the protective shell 4 can provide a certain degree of protection for the motor 3.

[0022] As a technical optimization of this utility model, the outer wall of the cylinder 1 is provided with a discharge port, and a first sealing plate 10 is hinged to the outer wall of the cylinder 1. The first sealing plate 10 is used to open or close the discharge port.

[0023] As a technical optimization of this utility model, the outer wall of the sand mixing cylinder 13 is provided with a first opening, a second electric gate 19 is installed in the first opening, and a third electric gate is installed in the connecting pipe 15.

[0024] As a technical optimization of this utility model, a second opening is provided on the outer wall of the cylinder 1, and a second sealing plate 11 is hinged to the outer wall of the cylinder 1. The second sealing plate 11 is used to open or close the second opening, and when the first opening is located directly below the sand mixing cylinder 13, the second opening is located directly below the first opening.

[0025] As a technical optimization of this utility model, an installation block 9 is installed at the bottom of the outer wall of the cylinder 1, a support plate 5 is installed at the bottom of the installation block 9, a base plate 6 is installed at the bottom of the support plate 5, a collection box 8 is placed on the base plate 6, the collection box 8 is located directly below the second opening, and two sets of installation holes 7 are symmetrically opened on the top of the base plate 6. The support plate 5 and the base plate 6 can provide support for this device through their cooperation. The installation holes 7 on the base plate 6 can facilitate the installation of the base plate 6, thereby facilitating the installation of this device.

[0026] When using this invention, if it is necessary to mix molding sand, it is not necessary to screen the molding sand first. The molding sand that needs to be mixed but has not been screened can be directly poured into the feed box 2.

[0027] Start motor 3. The output shaft of motor 3 drives the sand mixing cylinder 13 to rotate until the feed port on the outer wall of the sand mixing cylinder 13 is rotated to the top of the sand mixing cylinder 13 and then stops. At this time, open the first electric gate 18 in the feed port and open the third electric gate in the connecting pipe 15. The molding sand in the feed box 2 can fall into the sand mixing cylinder 13 through the connecting pipe 15 and the feed port, thus automatically completing the feeding step of adding molding sand into the sand mixing cylinder 13.

[0028] After adding the unscreened molding sand that needs to be mixed into the mixing cylinder 13, close the first electric gate 18 and the third electric gate. At this time, start the motor 3. The output shaft of the motor 3 drives the mixing cylinder 13 to rotate. The rotation of the mixing cylinder 13 drives the first stirring rod 14 and the second stirring rod 17 installed on the inner wall of the mixing cylinder 13 to rotate. As the mixing cylinder 13 rotates, the molding sand also rotates inside the mixing cylinder 13 and collides with the first stirring rod 14 and the second stirring rod 17. The first stirring rod 14 and the second stirring rod 17 are used to stir and mix the molding sand in the mixing cylinder 13, which can perform sand mixing treatment and improve the molding sand quality. During the mixing process, the molding sand rotates within the mixing cylinder 13, allowing the sand to be sieved through the sieve holes on the outer wall of the mixing cylinder 13. Sand particles with a diameter larger than the sieve hole diameter are sieved into the mixing cylinder 13, while sand particles with a diameter smaller than the sieve hole can fall into the cylinder 1. This process integrates the sieving and mixing of molding sand into one step, eliminating the need for separate sieving and mixing. This improves the mixing efficiency of the molding sand and avoids the impact of sieving on the mixing efficiency.

[0029] Molding sand with a qualified particle diameter that falls into cylinder 1 can be poured out by opening the first sealing plate 10.

[0030] The molding sand with excessively large particle diameters in the mixing cylinder 13 remains inside. When it is necessary to pour out these excessively large particles, the motor 3 is started. The output shaft of the motor 3 rotates, causing the mixing cylinder 13 to rotate until the first opening is directly below the mixing cylinder 13 and then stops. At this time, the second sealing plate 11 is opened and the second electric gate 19 is opened. The excessively large particles in the mixing cylinder 13 can then fall into the collection box 8 through the first and second openings. The collection box 8 is used to collect and process the excessively large particles in the mixing cylinder 13.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sand mixer for precision casting engineering, comprising a cylinder (1), characterized in that, A sand mixing cylinder (13) is rotatably installed inside the cylinder (1). The outer wall of the sand mixing cylinder (13) has several sieve holes. Several first stirring rods (14) are installed alternately on the inner wall of the sand mixing cylinder (13). Several mounting plates (16) are installed on the outer wall of the first stirring rods (14). Second stirring rods (17) are installed on the side of the mounting plates (16). A feed inlet is opened on the outer wall of the sand mixing cylinder (13). A first electric gate (18) is installed in the feed inlet. A feed box (2) is installed on the top of the outer wall of the cylinder (1). A connecting pipe (15) is connected to the bottom of the feed box (2). The end of the connecting pipe (15) is inserted into the cylinder (1). When the feed inlet is located directly above the sand mixing cylinder (13), the end of the connecting pipe (15) is located directly above the feed inlet.

2. The sand mixer for precision casting engineering according to claim 1, characterized in that, A motor (3) is installed on the side of the cylinder (1), and the output shaft of the motor (3) is inserted into the cylinder (1) and connected to the sand mixing cylinder (13).

3. A sand mixer for precision casting engineering according to claim 1, characterized in that, The mixing cylinder (13) is equipped with fixing rods (20) on both sides. A slider (21) is installed at the end of the fixing rod (20) away from the mixing cylinder (13). Annular grooves (22) are opened on both sides of the inner wall of the cylinder (1). The slider (21) is slidably installed in the annular groove (22).

4. A sand mixer for precision casting engineering according to claim 2, characterized in that, The output shaft of the motor (3) is equipped with a reinforcing block (12), which is installed on the side of the mixing cylinder (13). A protective shell (4) is installed on the side of the cylinder (1) close to the motor (3), and the motor (3) is located inside the protective shell (4).

5. A sand mixer for precision casting engineering according to claim 1, characterized in that, The outer wall of the cylinder (1) is provided with a discharge port, and a first sealing plate (10) is hinged to the outer wall of the cylinder (1). The first sealing plate (10) is used to open or close the discharge port.

6. A sand mixer for precision casting engineering according to claim 1, characterized in that, The outer wall of the mixing cylinder (13) has a first opening, a second electric gate (19) is installed in the first opening, and a third electric gate is installed in the connecting pipe (15).

7. A sand mixer for precision casting engineering according to claim 6, characterized in that, The outer wall of the cylinder (1) is provided with a second opening, and the outer wall of the cylinder (1) is hinged with a second sealing plate (11). The second sealing plate (11) is used to open or close the second opening, and when the first opening is located directly below the sand mixing cylinder (13), the second opening is located directly below the first opening.

8. A sand mixer for precision casting engineering according to claim 7, characterized in that, An installation block (9) is installed at the bottom of the outer wall of the cylinder (1). A support plate (5) is installed at the bottom of the installation block (9). A base plate (6) is installed at the bottom of the support plate (5). A collection box (8) is placed on the base plate (6). The collection box (8) is located directly below the second opening. Two sets of installation holes (7) are symmetrically opened on the top of the base plate (6).

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