Rotor type sand mixer

Abstract

The utility model provides a rotor type sand mixer, which relates to the technical field of rotor sand mixers, and comprises a base, the side wall of the base is provided with a fixing port, the inner wall of the fixing port is fixedly connected with a fixing frame, the fixing frame is internally provided with a coaxial reversing mechanism, and the coaxial reversing mechanism comprises a first gear. The bevel gear teeth of the first gear are matched and meshed with a second gear, the bevel gear teeth of the second gear are matched and meshed with a third gear, the bevel of the third gear corresponds to the bevel of the first gear, the side, away from the first gear, of the third gear is fixedly connected with a connecting ring, and a rotating shaft is arranged on the inner wall of the connecting ring. According to the sand mixing device, the sand mixing barrel and the rotating rod are driven to rotate reversely through the coaxial reversing mechanism, and after the sand mixing barrel rotates, crude sand deposited at the bottom is driven and then falls onto the stirring blades rotating reversely due to gravity, so that the stirring range is larger, stirring is more uniform, and the stirring effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor sand mixers, in particular to a rotor sand mixer. Background Art

[0002] A rotor sand mixer is a common sand mixing device for clay sand casting processes and is a device that effectively coats the binder on the surface of sand grains. The rotor sand mixer can achieve a relatively high transmission efficiency, increase the output spindle speed, and can meet the requirements of a large amount of clay sand used in the casting workshop for clay sand casting. It is the main device for clay sand casting treatment in the casting workshop.

[0003] A highly efficient rotor sand mixer that is convenient for rapid stirring provided by the publication number "CN220129131U" shows that this patented technology can stably support the sand mixing barrel through a support mechanism, so that when the sand mixing operation is carried out, the position of the sand mixing barrel is relatively stable, avoiding the movement of the sand mixing barrel.

[0004] However, the following problems still exist in the implementation of the above device:

[0005] For example, during the stirring process, the raw sand or additives being stirred will accumulate on the side wall or bottom of the sand mixing barrel. However, its stirring range is limited, resulting in accumulation in places that the stirring parts cannot reach, causing uneven stirring and affecting the stirring effect, thus affecting the mixing effect. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a rotor sand mixer to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A rotor sand mixer includes a base. A fixing opening is provided on the side wall of the base, and a fixing frame is fixedly connected to the inner wall of the fixing opening. A coaxial reverse rotation mechanism is arranged inside the fixing frame;

[0009] The coaxial reverse rotation mechanism includes a first gear. The inclined teeth of the first gear are meshed with a second gear in a matching manner. The inclined teeth of the second gear are meshed with a third gear in a matching manner, and the inclined surface of the third gear corresponds to the inclined surface of the first gear. A connecting ring is fixedly connected to the side of the third gear away from the first gear, and a rotating shaft is arranged on the inner wall of the connecting ring. A first through hole is penetrated through the center position of the first gear, and a second through hole is penetrated through the center position of the third gear.

[0010] Preferably, the top of the second gear is rotatably connected to the top inner wall of the fixing frame, and the outer wall of the connecting ring is rotatably connected to the side wall of the fixing frame.

[0011] Preferably, a connecting shaft is rotatably connected to the side wall of the base, and a sand mixing bucket is fixedly connected to one end of the connecting shaft. A connecting frame is fixedly connected to the side wall of the base, and a connecting port is formed through the side wall of the connecting frame.

[0012] Preferably, a motor is fixedly connected to the inner wall of the connecting port, a rotating rod is fixedly connected to the output shaft of the motor, a plurality of stirring blades are fixedly connected to the outer wall of the rotating rod, and the end of the rotating rod away from the motor is rotatably connected to the inner wall of the sand mixing bucket.

[0013] Preferably, the inner wall of the first through hole is fixedly connected to the outer wall of the rotating rod.

[0014] Preferably, the outside of the rotating rod is fixedly connected to the inner wall of the rotating shaft.

[0015] Preferably, a discharge port is fixedly connected to the side wall of the sand mixing bucket, and a conveyor belt is arranged on the inner wall of the base.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The stirring blade drives the original sand to be stirred by the rotating rod, and at the same time, the coaxial reverse rotation mechanism drives the sand mixing bucket and the rotating rod to rotate in the reverse direction. After the sand mixing bucket rotates, the original sand accumulated at the bottom will be driven and then fall onto the stirring blade rotating in the reverse direction due to gravity, so that the stirring range is larger, the stirring is more uniform, and the stirring effect is better.

[0018] 2. By arranging a conveyor belt below the lower sand mixing bucket, after the stirring is completed, align the discharge port with the conveyor belt and open it, and the stirred mixed sand can be directly sent to the next place through the conveyor belt, avoiding spending a lot of time for discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0020] Figure 2 is a partial structural sectional view of the present utility model;

[0021] Figure 3 is a schematic structural connection diagram of the coaxial reverse rotation mechanism of the present utility model;

[0022] Figure 4 is an exploded view of the structure of the coaxial reverse rotation mechanism of the present utility model.

[0023] In the figure: 1. Base; 2. Fixed port; 3. Fixed frame; 4. Coaxial reverse mechanism; 401. First gear; 402. Second gear; 403. Third gear; 404. Connecting ring; 405. Rotating shaft; 406. First through hole; 407. Second through hole; 5. Connecting shaft; 6. Sand mixing barrel; 7. Connecting frame; 8. Connecting port; 9. Motor; 10. Rotating rod; 11. Stirring blade; 12. Discharge port; 13. Conveyor belt. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] Embodiment 1. Please refer to Figures 1-4 , the present invention provides a technical solution:

[0026] A rotor-type sand mixer includes a fixed port 2 provided on the side wall of the base 1, and a fixed frame 3 is fixedly connected to the inner wall of the fixed port 2. A coaxial reverse mechanism 4 is arranged inside the fixed frame 3;

[0027] Further, the coaxial reverse mechanism 4 includes a first gear 401, and the inclined teeth of the first gear 401 are meshed with a second gear 402 in a matching manner. The inclined teeth of the second gear 402 are meshed with a third gear 403 in a matching manner. And the inclined surface of the third gear 403 corresponds to the inclined surface of the first gear 401. A connecting ring 404 is fixedly connected to the side of the third gear 403 away from the first gear 401. And a rotating shaft 405 is arranged on the inner wall of the connecting ring 404. A first through hole 406 is penetrated through the center position of the first gear 401. A second through hole 407 is penetrated through the center position of the third gear 403;

[0028] More specifically, in this embodiment, first, when in use, first open the discharge port 12, and the raw sand and additives to be processed can be added into the sand mixing barrel 6 from the discharge port 12, and then close the discharge port 12 to proceed with the next step;

[0029] Then start the motor 9. After that, the rotating rod 10 fixedly connected to the output shaft of the motor 9 will be driven to rotate. At the same time, the other end of the rotating rod 10 rotates inside the sand mixing barrel 6. Since a number of stirring blades 11 are fixedly connected to the outer wall of the rotating rod 10, when the rotating rod 10 rotates, a number of stirring blades 11 will rotate around the rotating rod 10 as the axis inside the sand mixing barrel 6, so as to achieve the effect of stirring the raw materials and additives.

[0030] Embodiment 2:

[0031] On the basis of the above embodiment, the top of the second gear 402 is rotatably connected to the top of the inner wall of the fixed frame 3, and the outer wall of the connecting ring 404 is rotatably connected to the side wall of the fixed frame 3;

[0032] Furthermore, a connecting shaft 5 is rotatably connected to the side wall of the base 1, and a sand mixing barrel 6 is fixedly connected to one end of the connecting shaft 5. A connecting frame 7 is fixedly connected to the side wall of the base 1, and a connecting port 8 is formed through the side wall of the connecting frame 7. A motor 9 is fixedly connected to the inner wall of the connecting port 8, and a rotating rod 10 is fixedly connected to the output shaft of the motor 9. The end of the rotating rod 10 away from the motor 9 is rotatably connected to the inner wall of the sand mixing barrel 6, and the outer part of the rotating rod 10 is fixedly connected to the inner wall of the rotating shaft 405;

[0033] More specifically, in this embodiment, while the rotating rod 10 rotates, since the inner wall of the first gear 401 and the outer wall of the rotating rod 10 are fixedly connected, the first through hole 406 will rotate synchronously with the rotating rod 10. Then, the second gear 402 that meshes with the inclined surface teeth of the first through hole 406 will be driven to rotate. Since the top of the second gear 402 is rotatably connected to the inside of the fixed frame 3, the fixed frame 3 will provide a supporting force for the second gear 402, making the rotation of the second gear 402 more stable and not prone to deviation. Then, the third gear 403 that meshes with the inclined surface teeth of the second gear 402 will be driven to rotate. After that, the connecting ring 404 will rotate synchronously with the third gear 403. Since the rotating shaft 405 is designed as a bearing, when the outer wall of the rotating shaft 405 rotates following the connecting ring 404, the rotating rod 10 fixedly connected to its inner wall will not rotate following the rotating shaft 405. Since the diameter of the second through hole 407 is larger than the diameter of the rotating rod 10, the rotating shaft 405 will provide a supporting force for the rotating rod 10. Then, the sand mixing barrel 6 fixedly connected to the connecting ring 404 will rotate synchronously with the third gear 403. Since the second gear 402 is passed through during the transmission process, the rotation directions of the first gear 401 and the third gear 403 are opposite. Therefore, the rotation directions of the sand mixing barrel 6 and the rotating rod 10 are opposite, thus achieving the effect of coaxial reverse rotation. When the sand mixing barrel 6 rotates, it will drive the raw sand accumulated at the bottom, and then it will fall onto the reversely rotating stirring blades 11 due to gravity, thereby making the stirring range larger, the stirring more uniform, and the stirring effect better. After the stirring is completed, the stirred mixed sand can be discharged through the discharge port 12 onto the conveyor belt 13 and conveyed to the next place, thus completing the rapid discharging.

[0034] Working principle: First, when in use, open the discharge port 12 first, and the raw sand and additives to be processed can be added into the interior of the sand mixing barrel 6 from the discharge port 12. Then close the discharge port 12 and start the motor 9. After that, the rotating rod 10 fixedly connected to the output shaft of the motor 9 will be driven to rotate. At the same time, the other end of the rotating rod 10 rotates inside the sand mixing barrel 6. While the rotating rod 10 is rotating, several stirring blades 11 will rotate around the rotating rod 10 as the axis inside the sand mixing barrel 6, so as to achieve the effect of stirring the raw materials and additives. At the same time, because the inner wall of the first through hole 406 and the outer wall of the rotating rod 10 are fixedly connected, the first gear 401 will rotate synchronously with the rotating rod 10. Then, the second gear 402 that is meshed with the inclined surface teeth of the first gear 401 will be driven to rotate. Since the top of the second gear 402 is rotatably connected inside the fixed frame 3, the fixed frame 3 will provide a supporting force for the second gear 402 to make the rotation of the second gear 402 more stable. Then, the third gear 403 that is meshed with the inclined surface teeth of the second gear 402 will be driven to rotate. After that, the connecting ring 404 will rotate synchronously with the third gear 403. Since the rotating shaft 405 is designed with bearings, the rotating rod 10 fixedly connected to its inner wall will not rotate with the rotating shaft 405. Since the second gear 402 is passed through during the transmission process, the rotation directions of the sand mixing barrel 6 and the rotating rod 10 are opposite, so as to achieve the effect of coaxial reverse rotation.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotor type sand mixer, comprising a base (1), characterized in that: The side wall of the base (1) is provided with a fixing opening (2), and a fixing frame (3) is fixedly connected to the inner wall of the fixing opening (2). A coaxial reverse mechanism (4) is arranged inside the fixing frame (3); The coaxial reverse mechanism (4) includes a first gear (401), and the inclined teeth of the first gear (401) are matingly engaged with a second gear (402). The inclined teeth of the second gear (402) are matingly engaged with a third gear (403), and the inclined surface of the third gear (403) corresponds to the inclined surface of the first gear (401). A connecting ring (404) is fixedly connected to the side of the third gear (403) away from the first gear (401), and a rotating shaft (405) is arranged on the inner wall of the connecting ring (404). A first through hole (406) is penetrated through the center position of the first gear (401), and a second through hole (407) is penetrated through the center position of the third gear (403).

2. The rotor sand mixer according to claim 1, wherein: The top of the second gear (402) is rotatably connected to the top of the inner wall of the fixing frame (3), and the outer wall of the connecting ring (404) is rotatably connected to the side wall of the fixing frame (3).

3. A rotor type sand mixer according to claim 1, characterized in that: A connecting shaft (5) is rotatably connected to the side wall of the base (1), and a sand mixing bucket (6) is fixedly connected to one end of the connecting shaft (5). A connecting frame (7) is fixedly connected to the side wall of the base (1), and a connecting opening (8) is penetrated through the side wall of the connecting frame (7).

4. A rotor type sand mixer according to claim 3, characterized in that: A motor (9) is fixedly connected to the inner wall of the connecting opening (8), and a rotating rod (10) is fixedly connected to the output shaft of the motor (9). A plurality of stirring blades (11) are fixedly connected to the outer wall of the rotating rod (10), and the end of the rotating rod (10) away from the motor (9) is rotatably connected to the inner wall of the sand mixing bucket (6).

5. The rotor sand mixer according to claim 4, characterized in that: The inner wall of the first through hole (406) is fixedly connected to the outer wall of the rotating rod (10).

6. A rotor sand mixer according to claim 4, characterized in that: The outer part of the rotating rod (10) is fixedly connected to the inner wall of the rotating shaft (405).

7. A rotor sand mixer according to claim 3, characterized in that: A discharge port (12) is fixedly connected to the side wall of the sand mixing bucket (6), and a conveyor belt (13) is arranged on the inner wall of the base (1).

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