Flour stone mill

Abstract

The utility model provides a flour stone mill which comprises a main frame body, a receiving groove is formed in the main frame body, a lower millstone and an upper millstone are arranged in the receiving groove, the upper millstone is connected with a middle shaft, the middle shaft is connected with a rotation driving assembly, and the rotation driving assembly is used for driving the middle shaft to drive the upper millstone to rotate. A lifting driving assembly is connected to the bottom of the middle shaft and used for driving the middle shaft to drive the upper millstone to ascend and descend so as to adjust the distance between the upper millstone and the lower millstone. The stone mill has the advantages of being more compact and reasonable in structural design, capable of conveniently adjusting the gap between the upper millstone and the lower millstone and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field related to flour processing, in particular to a flour stone mill. Background Art

[0002] The stone mill used for flour processing is generally realized by two grinding discs, namely the upper grinding disc and the lower grinding disc. The granular material is ground by the upper grinding disc and the lower grinding disc that can rotate with each other, and finally becomes flour. In the prior art, the gap between the upper grinding disc and the small grinding disc of the flour stone mill is generally not adjustable, which results in the mesh size of the ground flour being fixed, and it is impossible to grind flour of different coarseness and fineness to meet the taste requirements of different people or different usage scenarios.

[0003] For this purpose, in the prior art, the publication number is CN220969304U, and the name is a stone mill for grinding flour. The spacing between the upper and lower grinding discs can be adjusted according to the particles of the material, thereby improving the versatility of the stone mill. However, the defects of the above technology are also quite obvious: 1. The equipment needs multiple columns to support and guide the circumference, which occupies the peripheral space of the equipment and makes it very inconvenient to add materials; 2. In order to facilitate the acceptance of flour, most of the existing equipment adopts the method of fixing the lower grinding disc and rotating the upper grinding disc to facilitate the fixing of the receiving groove on the lower grinding disc, while the above technology adopts the method of rotating the lower grinding disc and fixing the upper grinding disc, and the flour is discharged through the gap in the protective cover, making it very difficult to clean the flour. The structural design adopted is unconventional, so it is difficult to be used for the transformation of existing equipment or use the parts of existing equipment, resulting in an increase in equipment cost. Utility Model Content

[0004] In order to solve the deficiencies of the current technology, the utility model combines the existing technology and provides a flour stone mill from the perspective of practical application, which has the advantages of more compact and reasonable structural design and convenient adjustment of the gap between the upper and lower grinding discs.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A flour stone mill comprises a main frame, a receiving groove is arranged on the main frame, a lower grinding disc and an upper grinding disc are arranged in the receiving groove, the upper grinding disc is connected to a central axis, the central axis is connected to a rotating drive assembly, the rotating drive assembly is used to drive the central axis to drive the upper grinding disc to rotate, and a lifting drive assembly is connected to the bottom of the central axis, the lifting drive assembly is used to drive the central axis to drive the upper grinding disc to lift and lower, so as to adjust the distance between the upper grinding disc and the lower grinding disc.

[0007] Furthermore, a sleeve is sleeved on the upper part of the middle shaft, the sleeve is connected to the lower grinding disc, a square shaft is arranged on the top of the middle shaft, an upper connecting piece is installed on the square shaft, the upper grinding disc is installed on the upper connecting piece, and an upper bearing is arranged between the inner side of the lower part of the upper connecting piece and the outer side of the sleeve.

[0008] Furthermore, a lower connecting member is provided at the bottom of the central shaft. The lower connecting member is connected to the lifting rod of the lifting drive assembly, and a lower bearing and a tapered roller bearing are provided between the central shaft and the lower connecting member.

[0009] Furthermore, the rotation drive assembly includes a motor and a hollow shaft reducer, and the central shaft is connected to the output shaft of the hollow shaft reducer by a key.

[0010] Furthermore, the lifting drive assembly includes a hoist. The hoist has a lifting rod and is driven by a hand-cranked assembly or an electric assembly.

[0011] Furthermore, a feeding funnel is fixedly provided on the upper grinding disc, and the outlet of the feeding funnel is located at the bottom surface of the upper grinding disc.

[0012] Furthermore, a discharge port is provided on the receiving groove.

[0013] Furthermore, the rotation drive assembly is arranged below the receiving groove and fixed to the main frame body, and the lifting drive assembly is arranged below the rotation drive assembly and fixed to the main frame body.

[0014] Advantages of the present utility model:

[0015] In the present utility model, a driving method of rotating the upper grinding disc and fixing the lower grinding disc is adopted. The lifting and rotation of the upper grinding disc are both controlled by a central shaft. Its overall structure is designed compactly and reasonably, with flexible movement and small occupied space.

[0016] In the present utility model, the corresponding connection structure design at the upper part of the central shaft ensures the flexibility of the lifting and rotation of the upper grinding disc, and the connection structure at the lower part ensures the stability of the force on the central shaft. The overall structure adopts an up-and-down layout, and the relevant components are mainly arranged inside the main frame body, with small occupied space.

[0017] In the present utility model, the equipment is designed and improved based on the traditional stone mill equipment, so the transformation of the traditional stone mill equipment can be facilitated. Description of the Drawings

[0018] Att Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0019] Att Figure 2 is a schematic front view structure diagram of the present utility model;

[0020] Att Figure 3 is a schematic connection structure diagram at the central shaft;

[0021] Att Figure 4 is a sectional view of the connection structure at the central shaft of the present utility model.

[0022] Reference numerals shown in the drawings:

[0023] 1. Main frame; 2. Receiving groove; 3. Lower grinding disc; 4. Upper grinding disc; 5. Feeding hopper; 6. Central shaft; 7. Rotating drive assembly; 8. Lifting drive assembly; 9. Motor; 10. Hollow shaft reducer; 11. Rocker arm; 12. Extension rod; 13. Hoist; 14. Lower connecting piece; 15. Tapered roller bearing; 16. Lower bearing; 17. Sleeve; 18. Upper bearing; 19. Upper connecting piece; 20. Square shaft; 21. Discharge port. Detailed implementation manners

[0024] In combination with the drawings and specific embodiments, the present utility model will be further described. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.

[0025] As Figures 1 - 4 shown, it is a schematic diagram of the relevant structure of a flour stone mill provided by this embodiment. The flour stone mill of this embodiment realizes the grinding process of materials by rotating the upper grinding disc and fixing the lower grinding disc, and the distance between the upper and lower grinding discs is adjustable, so that this stone mill can process flour of different meshes.

[0026] The main structure of the flour stone mill of this embodiment is as follows: It includes a main frame 1, and the main frame 1 is a frame structure welded by several rectangular tubes. An annular receiving groove 2 is fixedly arranged on the upper surface of the main frame 1. A lower grinding disc 3 and an upper grinding disc 4 are arranged in the receiving groove 2. The lower grinding disc 3 and the upper grinding disc 4 are coaxially arranged. A feeding hopper 5 is arranged on the upper grinding disc 4, and the outlet of the feeding hopper 5 is located on the lower surface of the upper grinding disc 4. A discharge port 21 is arranged on the side of the receiving groove 2. The material is put into the feeding hopper 5, the material enters between the upper grinding disc 4 and the lower grinding disc 3, the upper grinding disc 4 rotates and the lower grinding disc 3 is fixed to grind the material into flour, the flour falls into the receiving groove 2 of the lower grinding disc 3, and then flows out through the discharge port 21.

[0027] In the above structure of this embodiment, the upper grinding disc 4 is connected with a central shaft 6. The central shaft 6 is arranged at the center position of the grinding disc, the upper end is connected with the upper grinding disc 4, the lower end passes through the lower grinding disc 3 and extends downward and is connected with a lifting drive assembly 8 at the end. The lifting drive assembly 8 is mainly used to drive the central shaft 6 to move up and down, and the central shaft 6 further drives the upper grinding disc 4 to move up and down, so as to adjust the distance between the upper and lower grinding discs. The middle part of the central shaft 6 is connected with a rotating drive assembly 7, and the central shaft 6 is driven to rotate by the rotating drive assembly 7, so as to realize the rotation of the upper grinding disc 44.

[0028] In this embodiment, the upper end of the central shaft 6 is connected to the upper grinding disc 4. On the one hand, it is necessary to ensure the transmission of torque, and on the other hand, it is necessary to ensure that the upper grinding disc 4 can be driven to lift during the lifting movement. For this purpose, a sleeve 17 is sleeved on the upper part of the central shaft 6. The sleeve 17 is fixedly arranged on the lower grinding disc 3. A square shaft 20 is provided at the top of the central shaft 6. An upper connecting piece 19 is installed on the square shaft 20. The transmission of torque can be realized through the setting of the square shaft 20. The upper grinding disc 4 is installed on the upper connecting piece 19. The lower part of the upper connecting piece 19 is grooved so that the upper end of the sleeve 17 is located in the groove. An upper bearing 18 is arranged between the lower end of the upper connecting piece 19 and the outer side of the sleeve 17. The upper bearing 18 is in clearance fit with the upper connecting piece 19 and interference fit with the sleeve 17 to ensure the flexible rotation and lifting of the upper connecting piece 19. In the above structure, when the central shaft 6 moves up and down inside the sleeve 17, the upper connecting piece 19 is pushed to lift together by the boss at the square shaft 20. The upper connecting piece 19 pushes the upper grinding disc 4 to lift. When the central shaft 6 rotates, the torque is transmitted through the square shaft 20 to make the upper connecting piece 19 rotate, and the upper connecting piece 19 drives the upper grinding disc 4 to rotate.

[0029] A rotation driving assembly 7 is arranged at the middle part of the central shaft 6. The rotation driving assembly 7 includes a motor 9 and a hollow shaft reducer 10. The central shaft 6 passes through the hollow output shaft of the reducer and is connected to the hollow output shaft by a key. The key is a sliding key or a spline key to ensure the torque transmission between the central shaft 6 and the hollow output shaft and the up and down movement of the central shaft 6 along the hollow output shaft. The central shaft 6 is driven to rotate by the motor 9.

[0030] The bottom of the central shaft 6 is connected to a lifting driving assembly 8. In a specific implementation manner provided in this embodiment, as shown in the figure, the lifting driving assembly 8 adopts a manual operation structure, which includes a rocker arm 11, an extension rod 12 and a hoist 13. The lifting rod of the hoist 13 is lifted and lowered by rotating the rocker arm 11. The lifting driving assembly 8 can also adopt an electric driving structure according to actual situations. The central shaft 6 is connected to the lifting rod of the hoist 13 through a lower connecting piece 14. A lower bearing 16 and a tapered roller bearing 15 are arranged in the lower connecting piece 14. The lower bearing 16 can ensure the flexible rotation of the central shaft 6, and the tapered roller bearing 15 can bear the axial force transmitted by the central shaft 6. In the above structure, manually rotating the rocker handle 11 can make the central shaft 6 move up and down without affecting the free rotation of the central shaft 6.

Claims

1. A flour mill, comprising a main frame, a receiving groove is arranged on the main frame, a lower grinding disc and an upper grinding disc are arranged in the receiving groove, characterized in that: The upper grinding disc is connected to a central axis, and the central axis is connected to a rotation drive assembly, and the rotation drive assembly is used to drive the central axis to drive the upper grinding disc to rotate. The bottom of the central axis is connected to a lifting drive assembly, and the lifting drive assembly is used to drive the central axis to drive the upper grinding disc to lift and lower, thereby adjusting the distance between the upper grinding disc and the lower grinding disc.

2. The flour mill according to claim 1, characterized in that: A sleeve is sleeved on the upper part of the middle shaft, and the sleeve is connected to the lower grinding disc. A square shaft is arranged on the top of the middle shaft, and an upper connecting piece is installed on the square shaft. The upper grinding disc is installed on the upper connecting piece, and an upper bearing is arranged between the inner side of the lower part of the upper connecting piece and the outer side of the sleeve.

3. The flour mill according to claim 2, characterized in that: A lower connecting piece is arranged at the bottom of the middle shaft, and the lower connecting piece is connected to the lifting rod of the lifting drive assembly. A lower bearing and a tapered roller bearing are arranged between the middle shaft and the lower connecting piece.

4. The flour mill according to claim 3, characterized in that: The rotary drive assembly comprises a motor and a hollow shaft reducer, and the central shaft is connected to the output shaft of the hollow shaft reducer via a key.

5. The flour mill according to claim 3, characterized in that: The lifting drive assembly comprises a hoist having a lifting rod, and the hoist is driven by a hand-crank assembly or an electric assembly.

6. The flour mill according to any one of claims 1 to 5, characterized in that: A feeding funnel is fixedly arranged on the upper grinding disc, and an outlet of the feeding funnel is located on the bottom surface of the upper grinding disc.

7. The flour mill according to claim 6, characterized in that: The receiving groove is provided with a discharge port.

8. The flour mill according to claim 1, characterized in that: The rotating drive assembly is arranged below the receiving groove and fixed on the main frame, and the lifting drive assembly is arranged below the rotating drive assembly and fixed on the main frame.

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