Sand mixer capable of preventing molding sand accumulation

Abstract

The utility model belongs to the technical field of sand mixers, and particularly relates to a molding sand accumulation prevention sand mixer which comprises a sand mixing box, a first feeding pipe is fixed to the middle of the top end of the sand mixing box in a penetrating mode, a feeding hopper is fixed to the top end of the first feeding pipe in a penetrating mode, and a mounting pipe is rotationally mounted on the outer wall of the first feeding pipe and located in the sand mixing box. A distributing block is fixed to the bottom end of the mounting pipe, discharging holes communicated with the mounting pipe are symmetrically formed in the two sides of the distributing block, a support is arranged at the top of the sand mixing box and located on one side of the feeding hopper, a first motor is arranged on the support, a stirring rod is fixed to an output shaft of the first motor, and one end of the stirring rod penetrates through the first feeding pipe and is fixed to the distributing block; the bottom end of the stirring rod extends into the sand mixing box, and a plurality of stirring blades are arranged on the outer wall of the stirring rod and located below the material distribution block. According to the molding sand mixing device, molding sand raw materials can be uniformly scattered into the sand mixing box, the situation that the molding sand raw materials are accumulated only at one position is avoided, the molding sand discharging uniformity is improved, and the molding sand mixing effect and efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand mixers, and particularly relates to a sand mixer for preventing molding sand from piling up. Background Art

[0002] Sand mixer is a kind of equipment used for mixing and stirring materials, which is widely used in foundry, construction, chemical industry and other industries. Its main function is to evenly mix the components in the molding sand and effectively coat the binder on the surface of the sand particles to obtain qualified molding sand; sand mixer is usually composed of mixing barrel, stirring mechanism, motor and other parts, which is suitable for mixing and stirring various types of materials. In the foundry industry, sand mixer is mainly used to mix and stir sand, water and binder to produce high-quality casting sand molds.

[0003] However, the current sand mixer mainly relies on a fixed feed port for operation when feeding. This method often causes the molding sand to accumulate in one place in the sand mixing box and cannot be evenly distributed. This uneven accumulation seriously affects the mixing efficiency and effect of the molding sand, making the mixing process of the molding sand less than ideal. Utility Model Content

[0004] The utility model aims to provide a sand mixer which can prevent molding sand accumulation, so that the molding sand raw materials can be evenly scattered into the sand mixing box to avoid accumulation in only one place, thereby improving the uniformity of molding sand feeding and improving the effect and efficiency of molding sand mixing.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A sand mixing machine for preventing molding sand accumulation comprises a sand mixing box, a first feed pipe is fixedly passed through the middle of the top of the sand mixing box, a feed hopper is fixedly passed through the top of the first feed pipe, a mounting pipe is rotatably mounted on the outer wall of the first feed pipe and is located in the sand mixing box, a dividing block is fixedly disposed at the bottom end of the mounting pipe, discharge holes connected to the mounting pipe are symmetrically arranged on both sides of the dividing block, a bracket is arranged at the top of the sand mixing box and at one side of the feed hopper, a first motor is arranged on the bracket, a stirring rod is fixedly disposed on the output shaft of the first motor, one end of the stirring rod passes through the first feed pipe and is fixed on the dividing block, the bottom end of the stirring rod extends into the sand mixing box, and a plurality of stirring blades are arranged on the outer wall of the stirring rod and below the dividing block.

[0007] Furthermore, the outer wall of the stirring rod is provided with a first spiral pushing blade in the first feeding pipe.

[0008] Furthermore, a rotating shaft is rotatably installed on the inner wall of the discharge hole, one end of the rotating shaft extends to the outside of the discharge hole and is fixed with a gear, the inner wall of the sand mixing box is provided with an annular gear plate meshing with the gear, and the outer wall of the rotating shaft and located in the discharge hole is provided with a second threaded pushing blade.

[0009] Furthermore, the outer wall of the stirring rod is provided with a scraper in contact with the sand mixing box.

[0010] The technical effects achieved by this utility model are:

[0011] The present invention is a practical sand mixing machine for preventing molding sand from accumulating. The dividing block and the discharging hole are arranged, and the first motor can drive the stirring rod to rotate. The stirring rod drives the discharging hole on the dividing block to rotate, so that the molding sand raw materials can be evenly sprinkled into the sand mixing box to avoid accumulation in only one place, thereby improving the uniformity of molding sand feeding and improving the effect and efficiency of molding sand mixing. The first spiral pushing blade is arranged to avoid clogging the first feeding pipe during feeding. The cooperation of the rotating shaft and the second threaded pushing blade can prevent the molding sand from clogging the discharging hole. The present invention is more practical, improves the feeding efficiency, and further improves the working efficiency. The scraper can effectively scrape off the molding sand accumulated on the inner wall of the sand mixing box, thereby avoiding the waste of molding sand and ensuring the uniform mixing of the molding sand, which is more perfect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a side-view stereoscopic structural schematic diagram of the utility model;

[0014] Figure 3 This is a practical Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0015] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0016] 1. Sand mixing box; 2. First feeding pipe; 3. Feed hopper; 4. Mounting pipe; 5. Distributing block; 6. Discharging hole; 7. Bracket; 8. First motor; 9. Stirring rod; 10. First spiral pushing blade; 11. Stirring blade; 12. Scraper; 13. Discharging pipe; 14. Vibrating motor; 15. Rotating shaft; 16. Second threaded pushing blade; 17. Gear; 18. Ring gear plate. DETAILED DESCRIPTION

[0017] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0018] like Figure 1-3As shown, a sand mixer for preventing molding sand accumulation comprises a sand mixing box 1, a first feeding pipe 2 is fixedly passed through the middle of the top of the sand mixing box 1, a feeding hopper 3 is fixedly passed through the top of the first feeding pipe 2, a mounting pipe 4 is rotatably mounted on the outer wall of the first feeding pipe 2 and is located in the sand mixing box 1, a material dividing block 5 is fixedly disposed at the bottom end of the mounting pipe 4, and discharge holes 6 connected to the mounting pipe 4 are symmetrically disposed on both sides of the material dividing block 5, a bracket 7 is disposed on the top of the sand mixing box 1 and located on one side of the feeding hopper 3, and a first motor 8 is disposed on the bracket 7 The output shaft of the first motor 8 is fixed with a stirring rod 9, one end of the stirring rod 9 passes through the first feeding pipe 2 and is fixed on the dividing block 5, the bottom end of the stirring rod 9 extends into the sand mixing box 1, and the outer wall of the stirring rod 9 and is located below the dividing block 5. A plurality of stirring blades 11 are arranged, which has a simple structure and is easy to operate. It can avoid that the discharged molding sand raw materials are accumulated in only one place in the sand mixing box 1, so that the discharge is more uniform, and the mixing efficiency and effect of the molding sand are improved; the outer wall of the stirring rod 9 is located in the first feeding pipe 2 and is provided with a first spiral pushing blade 10 , which is convenient for the material to block the first feeding pipe 2, and convenient for the material to smoothly enter the sand mixing box 1 from the feeding hopper 3, which is more practical; the inner wall of the discharge hole 6 is rotatably installed with a rotating shaft 15, one end of the rotating shaft 15 extends to the outside of the discharge hole 6 and is fixed with a gear 17, the inner wall of the sand mixing box 1 is provided with an annular gear plate 18 meshing with the gear 17, and the outer wall of the rotating shaft 15 and located in the discharge hole 6 are provided with a second threaded pushing blade 16, which has a simple structure and is easy to operate. The rotating shaft 15 is driven to revolve through the rotation of the dividing block 5, and the rotating shaft 15 is driven to revolve. The shaft 15 drives the rotating shaft 15 to rotate by the cooperation of the gear 17 and the annular gear plate 18, and the rotating shaft 15 drives the second threaded pusher blade 16 to rotate, which is convenient for the outflow of the material in the discharge hole 6 and prevents blockage, which is relatively perfect; the outer wall of the stirring rod 9 is provided with a scraper 12 in contact with the sand mixing box 1, which prevents the material from sticking to the inner wall of the sand mixing box 1 when mixing the molding sand, and can effectively clean the material on the inner wall of the sand mixing box 1, thereby improving the use effect of the equipment, facilitating the mixing of the molding sand, and further improving the mixing efficiency;

[0019] like Figure 1 As shown, a discharge pipe 13 is fixed through the middle of the bottom end of the sand mixing box 1, and a valve is provided near the outer wall of the discharge pipe 13 to facilitate the discharge of the mixed molding sand, which is relatively complete. A vibration motor 14 is provided on the outer wall of the discharge pipe 13, and the vibration motor 14 is provided to facilitate the discharge of the molding sand and prevent the discharge pipe 13 from being blocked, which is relatively complete and practical.

[0020] like Figure 1 As shown, three supporting legs are arranged at the bottom of the sand mixing box 1, so as to stably support the sand mixing box 1 and make the equipment work more stably.

[0021] The working principle of the utility model is as follows: the first motor 8 is started, the first motor 8 drives the stirring rod 9 to rotate, the stirring rod 9 drives the first spiral pushing blade 10 to rotate, so that the material in the feed hopper 3 can smoothly enter the discharge hole 6, and the material enters the sand mixing box 1 along the two discharge holes 6, the stirring rod 9 drives the dividing block 5 to rotate, the dividing block 5 drives the discharge hole 6 to rotate, so that the raw materials coming out of the discharge hole 6 can evenly enter the sand mixing box 1, the stirring rod 9 drives the stirring blade 11 and the scraper 12 to rotate, stir the raw materials entering the sand mixing box 1, clean the raw materials adhering to the sand mixing box 1, and after mixing, the materials are discharged through the discharge pipe 13.

[0022] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A sand mixer for preventing sand accumulation, characterized in that: The invention comprises a sand mixing box (1), wherein a first feeding pipe (2) is fixedly passed through the middle of the top of the sand mixing box (1), a feeding hopper (3) is fixedly passed through the top of the first feeding pipe (2), a mounting pipe (4) is rotatably mounted on the outer wall of the first feeding pipe (2) and is located inside the sand mixing box (1), a material distribution block (5) is fixedly disposed at the bottom end of the material distribution block (5), and discharge holes (6) connected to the mounting pipe (4) are symmetrically arranged on both sides of the material distribution block (5), and the sand mixing box ( A bracket (7) is provided at the top of the mixing box (1) and located on one side of the feed hopper (3), and a first motor (8) is provided on the bracket (7). A stirring rod (9) is fixed to the output shaft of the first motor (8), and one end of the stirring rod (9) passes through the first feed pipe (2) and is fixed to the material distribution block (5), and the bottom end of the stirring rod (9) extends into the sand mixing box (1), and a plurality of stirring blades (11) are provided on the outer wall of the stirring rod (9) and located below the material distribution block (5).

2. A sand mixer for preventing molding sand accumulation according to claim 1, characterized in that: The outer wall of the stirring rod (9) is located in the first feeding pipe (2) and is provided with a first spiral pushing blade (10).

3. A sand mixer for preventing molding sand accumulation according to claim 1, characterized in that: A rotating shaft (15) is rotatably mounted on the inner wall of the discharge hole (6), one end of the rotating shaft (15) extends to the outside of the discharge hole (6) and is fixed with a gear (17), the inner wall of the sand mixing box (1) is provided with an annular gear plate (18) meshing with the gear (17), and a second threaded pusher blade (16) is provided on the outer wall of the rotating shaft (15) and located inside the discharge hole (6).

4. A sand mixer for preventing molding sand accumulation according to claim 1, characterized in that: The outer wall of the stirring rod (9) is provided with a scraper (12) in contact with the sand mixing box (1).

5. A sand mixer for preventing molding sand accumulation according to claim 1, characterized in that: A discharge pipe (13) is fixedly passed through the middle of the bottom end of the sand mixing box (1), and a vibration motor (14) is arranged on the outer wall of the discharge pipe (13).

6. A sand mixer for preventing molding sand accumulation according to claim 1, characterized in that: The bottom of the sand mixing box (1) is provided with three supporting legs.

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