Grinding and blending device for food production

Abstract

The invention relates to the technical field of grinding equipment, and discloses a grinding and blending device for food production, the grinding and blending device comprises a coarse grinding bin and a fine grinding bin, a conical inner bin is fixedly connected in the fine grinding bin, a spiral annular flow guide cavity is formed in the conical inner bin, a circulating fan is arranged outside the flow guide cavity, and an air outlet of the circulating fan communicates with the flow guide cavity; an upper material collecting cavity is formed between the accurate grinding bin and the accurate grinding roller, the flow guide cavity communicates with and extends into the upper material collecting cavity, and an air outlet is formed in the top of the upper material collecting cavity; the spiral upward annular flowing air flow is formed in the conical inner bin through the flow guide cavity, food powder is driven by the annular flowing air flow to diffuse in the conical inner bin, the phenomenon that food is bonded in the conical inner bin is avoided, meanwhile, it is guaranteed that the ground food is evenly dispersed in the conical inner bin, and then the food grinding effect is guaranteed; the grinding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a grinding and mixing device for food production. Background Art

[0002] In the process of food processing, it is usually necessary to grind the food, mainly for grinding the food into powder to facilitate subsequent secondary processing or packaging and storage. When grinding food, it usually includes rolling grinding or blade crushing and grinding equipment.

[0003] Among them, in the Chinese patent with the patent publication number CN110280344A, a food processing grinding device is disclosed, including a grinding barrel, the top surface of the grinding barrel is fixedly connected with a feed funnel, the inner wall of the grinding barrel is fixedly connected with a first cylinder, an upper grinding disc is arranged in the grinding barrel, a plurality of through holes are opened on the upper grinding disc, a dovetail groove is opened in an annular manner on the top surface of the upper grinding disc, two dovetail blocks are fitted and slid in the dovetail groove, the top surface of the dovetail block is fixedly connected with the bottom surface of the first cylinder, the first cylinder is conical in shape, a plurality of first grooves are opened in an annular manner on the bottom surface of the upper grinding disc, and a plurality of first grooves overlap in a circle. The upper grinding disc and the lower grinding disc rotate in opposite directions, so that the food can be fully and evenly ground, and a slip ring, a retaining ring, a fourth cylinder, an inclined rod, a vertical rod, a U-shaped rod, a protrusion and a second spring are provided to enable the funnel to move in amplitude, so that the ground material falls, and prevent the material from adhering to the inner wall of the device.

[0004] However, in the process of grinding oily food, due to the characteristics of oily food, agglomeration and adhesion are prone to occur during the grinding process, not only the adhesion between the food and the grinding equipment, but also the mutual adhesion between the foods themselves. Therefore, simply increasing the vibration cannot effectively avoid the adhesion of the food after grinding, which leads to a decrease in the overall grinding effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a grinding and mixing device for food production, which has the advantages of effectively preventing oily foods from sticking together and effectively improving the grinding effect.

[0006] To achieve the above object, the present invention provides the following technical solutions: A grinding and mixing device for food production comprises a coarse grinding bin and a fine grinding bin, wherein the interior of the fine grinding bin is fixedly connected to a conical inner bin, a spiral annular guide chamber is provided inside the conical inner bin, a circulating fan is provided outside the guide chamber, an air outlet of the circulating fan is connected to the guide chamber, the circulating fan is configured to intermittently pause for air outlet, an upper material collection chamber is provided between the fine grinding bin and the fine grinding roller, the guide chamber is connected and extends into the upper material collection chamber, an air outlet is provided on the top of the upper material collection chamber, and an annular mesh strip is fixedly connected to the outside of the guide chamber located at the bottom section of the upper material collection chamber.

[0007] Preferably: the fine grinding bin is rotatably connected to the inside thereof, a fine grinding roller and a coarse grinding roller are arranged on the outside of the output shaft, a reduction mechanism is arranged between the output shaft and the fine grinding roller, the output shaft is connected to the fine grinding roller via the reduction mechanism, the coarse grinding roller is movably connected to the top of the output shaft, the coarse grinding roller is rotatably connected to the inside of the coarse grinding bin, a feed port is opened on the top of the coarse grinding bin, a lower discharge chamber is arranged below the fine grinding roller, a material guide pipe is arranged between the upper collecting chamber and the lower discharge chamber, a discharge valve is arranged between the lower discharge chamber and the conical inner bin, for controlling the connection between the conical inner bin and the lower discharge chamber.

[0008] Preferably: the reduction mechanism includes a main gear fixedly connected to the outside of the output shaft, the outside of the main gear is meshedly connected with a connecting gear, the outside of the connecting gear is meshedly connected with an outer gear ring, the outer gear ring is fixedly connected to the inner cavity of the fine grinding roller, the bottom of the fine grinding roller is rotatably connected to a support plate, the connecting gear is installed on the top of the support plate, a pressure regulating assembly is provided at the bottom of the support plate, the pressure regulating assembly is fixedly installed at the bottom of the fine grinding bin, the pressure regulating assembly is used to control the up and down movement of the fine grinding roller, the pressure regulating assembly is set as an electromagnetic pressure regulator, the electromagnetic pressure regulator is used to control the up and down movement of the support plate, the support plate and the fine grinding roller move synchronously, and the output shaft is fixedly connected to the output end of the external main motor.

[0009] Preferably: the fine-grinding roller is provided with an upper fine-grinding protrusion and a lower fine-grinding protrusion in sequence above and below, the lower fine-grinding protrusion and the fine-grinding roller are movably plugged, a top pressure spring is provided between the lower fine-grinding protrusion and the fine-grinding roller, the inner wall of the conical inner bin is provided with a reinforcing plate, the inner wall of the reinforcing plate is provided with a fine-grinding semicircular block, the upper fine-grinding protrusion and the lower fine-grinding protrusion are both engaged with the fine-grinding semicircular block, and a pressure detector is provided on the inner side of the upper fine-grinding protrusion for detecting food grinding pressure.

[0010] Preferably: a guide plate is arranged inside the guide cavity, a heating plate is arranged on the outer side of the guide cavity, and the guide plate is provided with a driving and adjusting mechanism for adjusting the flow rate and flow direction of the gas inside the guide cavity.

[0011] Preferably, the fine grinding roller is arranged in an elliptical shape in the area of ​​the lower fine grinding convex block, the lower fine grinding convex block forms a narrow mouth area and a wide mouth area, and the narrow mouth area and the wide mouth area formed by the lower fine grinding convex block rotate with the rotation of the fine grinding roller.

[0012] Preferably: a pressure air cavity is formed in the connection area between the lower fine grinding bump and the fine grinding roller, an exhaust hole is opened inside the lower fine grinding bump, a sealing cover is hinged at the end of the lower fine grinding bump, a damping sliding connection is formed between the lower fine grinding bump and the fine grinding roller, and the opening direction of the sealing cover is adapted to the rotation direction of the fine grinding roller.

[0013] Preferably, the gap between the upper fine grinding lug and the conical inner chamber is larger than the narrow opening area of ​​the lower fine grinding lug, but smaller than the wide opening area.

[0014] Preferably, a transition cavity is provided on the top of the fine grinding roller, the transition cavity is located below the coarse grinding roller, and a feed outlet is provided on the inner bottom of the transition cavity and extends through to the conical side surface of the fine grinding roller.

[0015] Beneficial effects of the present invention: 1. The grinding and mixing device for food production forms a spiral upward annular flow airflow inside the conical inner bin of the guide cavity. The annular flow of gas drives the food powder to diffuse inside the conical inner bin, which not only avoids the food from sticking inside the conical inner bin, but also ensures that the ground food is evenly dispersed inside the conical inner bin, thereby ensuring the grinding effect of the food and improving the grinding quality.

[0016] 2. The grinding and mixing device for food production temporarily stores the coarsely ground food in the transition chamber and slowly discharges the food through the discharge port, thereby effectively reducing the amount of food entering the fine grinding area at a single time. By controlling the amount of food entering the fine grinding area, the purpose of controlling the grinding effect is achieved, thereby effectively improving the overall effect of food grinding.

[0017] 3. The grinding and mixing device for food production heats the gas through the heating plate during the gas flow in the guide chamber, thereby increasing the temperature of the fine grinding area in the conical inner bin to reduce the stickiness of oily food, thereby reducing the phenomenon of agglomeration and sticking of oily food due to rolling. The flowing gas takes away the high temperature generated by grinding, which can effectively ensure the temperature stability of the grinding area. The heating plate can ensure the temperature of the flowing gas in the guide chamber to reduce the stickiness of oily food, and the flowing gas can take away the accumulated grinding temperature to avoid local high temperature and prevent food from being damaged by high temperature, thereby ensuring the temperature stability of the grinding area and thus ensuring the grinding quality.

[0018] 4. The grinding and mixing device for food production is arranged in an elliptical shape by the fine grinding roller in the area of ​​the lower fine grinding convex block, and the lower fine grinding convex block forms a narrow mouth area and a wide mouth area. When the powder flows to the narrow mouth area, the narrow mouth is compressed to increase the powder grinding pressure, thereby increasing the grinding effect of the powder. When the powder flows to the wide mouth area, the compressed powder is diffused and crushed in the wide mouth area to avoid agglomeration and adhesion of high-viscosity materials, thereby improving the grinding efficiency. At the same time, the annular upward-flowing airflow circulates alternately in the wide mouth area and the narrow mouth area, and the gas flow rate changes in the narrow mouth area and the wide mouth area, thereby further increasing the effect of gas-assisted food diffusion.

[0019] 5. The grinding and mixing device for food production compresses the pressure air cavity through the lower fine grinding protrusion. At the same time, since the sealing cover abuts against the reinforcing plate of the conical inner bin, the gas inside the pressure air cavity is compressed. When the lower fine grinding protrusion rotates to the wide mouth area, the sealing cover opens under the top pressure of the compressed gas, and the gas is ejected outward. The ejected gas acts on the inner wall of the conical inner bin, further preventing the powder food from sticking together. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance of the main body of the device of the present invention; Figure 2 It is a schematic diagram of a cross-sectional view of the device of the present invention; Figure 3 This is a schematic diagram of the connection between the rough grinding roller and the fine grinding roller of the present invention; Figure 4 It is a cross-sectional schematic diagram of the fine grinding chamber and the conical inner chamber of the present invention; Figure 5 This is a schematic diagram of the connection between the upper material collecting chamber, the material guiding pipe and the lower material discharging chamber of the present invention; Figure 6 This is a schematic diagram of the connection between the output shaft, the speed reduction mechanism and the fine grinding roller of the present invention; Figure 7 It is a schematic diagram of the narrow mouth area of ​​the present invention; Figure 8 This is a schematic diagram of the wide mouth area of ​​the present invention; Fig. 9 It is a partial schematic diagram of the flow guide cavity of the present invention; Fig.10 It is a schematic diagram of the fine grinding bump of the present invention.

[0021] In the figure: 1. coarse grinding chamber; 2. fine grinding chamber; 3. conical inner chamber; 31. reinforcement plate; 32. fine grinding semicircular block; 33. support plate; 4. output shaft; 5. reduction mechanism; 51. main gear; 52. connecting gear; 53. outer gear ring; 6. coarse grinding roller; 7. fine grinding roller; 71. transition chamber; 72. discharge port; 73. upper fine grinding convex block; 74. lower fine grinding convex block; 741. top pressure spring; 742. exhaust hole; 743. sealing cover; 744. pressure air chamber; 8. pressure regulating assembly; 9. guide chamber; 91. annular mesh strip; 92. guide plate; 93. heating plate; 10. upper collecting chamber; 101. air outlet; 11. circulating fan; 12. lower discharge chamber; 13. guide pipe. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] For example, see Figure 1 - Fig.10 A grinding and mixing device for food production comprises a coarse grinding bin 1 and a fine grinding bin 2, wherein a conical inner bin 3 is fixedly connected to the interior of the fine grinding bin 2, a spiral annular guide chamber 9 is provided inside the conical inner bin 3, a circulating fan 11 is arranged outside the guide chamber 9, an air outlet of the circulating fan 11 is connected to the guide chamber 9, and the circulating fan 11 is arranged to intermittently pause for air outlet, an upper collecting chamber 10 is opened between the fine grinding bin 2 and the fine grinding roller 7, the guide chamber 9 is connected and extends into the upper collecting chamber 10, an air outlet 101 is arranged on the top of the upper collecting chamber 10, and an annular mesh strip 91 is fixedly connected to the outside of the guide chamber 9 located at the bottom section of the upper collecting chamber 10.

[0024] It should be noted that the circulating fan 11 is connected to the lower end of the guide cavity 9, and a spiral upward annular flow airflow is formed inside the conical inner bin 3 through the guide cavity 9. The annular flow of gas drives the food powder to diffuse inside the conical inner bin 3, which not only avoids the adhesion of food inside the conical inner bin 3, but also ensures that the ground food is evenly dispersed inside the conical inner bin 3, thereby ensuring the grinding effect of the food and improving the grinding quality.

[0025] refer to Figure 2-Figure 5In an optional embodiment, the interior of the fine grinding bin 2 is rotatably connected to an output shaft 4, a fine grinding roller 7 and a coarse grinding roller 6 are arranged on the outside of the output shaft 4, a reduction mechanism 5 is arranged between the output shaft 4 and the fine grinding roller 7, the output shaft 4 is connected to the fine grinding roller 7 through the reduction mechanism 5, the coarse grinding roller 6 is movably connected to the top of the output shaft 4, the coarse grinding roller 6 is rotatably connected to the interior of the coarse grinding bin 1, a feed port is opened at the top of the coarse grinding bin 1, a lower discharge chamber 12 is arranged below the fine grinding roller 7, a material guide pipe 13 is arranged between the upper collecting chamber 10 and the lower discharge chamber 12, a discharge valve is arranged between the lower discharge chamber 12 and the conical inner bin 3, which is used to control the connection between the conical inner bin 3 and the lower discharge chamber 12.

[0026] It should be noted that the output shaft 4 is fixedly connected to the output end of the external main motor. The main motor drives the output shaft 4 to rotate. The output shaft 4 drives the fine grinding roller 7 to rotate through the speed reduction mechanism 5. The output shaft 4 drives the coarse grinding roller 6 to rotate.

[0027] The rotation speed of the rough grinding roller 6 is greater than that of the fine grinding roller 7 , and the grinding gap of the rough grinding roller 6 is greater than the maximum gap of the fine grinding roller 7 .

[0028] refer to Figure 2 and Figure 6 The reduction mechanism 5 includes a main gear 51 fixedly connected to the outside of the output shaft 4, the outside of the main gear 51 is meshedly connected with a connecting gear 52, the outside of the connecting gear 52 is meshedly connected with an outer gear ring 53, the outer gear ring 53 is fixedly connected to the inner cavity of the fine grinding roller 7, the bottom of the fine grinding roller 7 is rotatably connected with a support plate 33, the connecting gear 52 is installed on the top of the support plate 33, and a pressure regulating component 8 is provided at the bottom of the support plate 33. The pressure regulating component 8 is fixedly installed at the bottom of the fine grinding chamber 2, and the pressure regulating component 8 is used to control the up and down movement of the fine grinding roller 7. The pressure regulating component 8 is set as an electromagnetic pressure regulator, and the electromagnetic pressure regulator is used to control the up and down movement of the support plate 33, and the support plate 33 and the fine grinding roller 7 move synchronously.

[0029] refer to Figure 3 In an optional embodiment, a transition cavity 71 is provided on the top of the fine grinding roller 7, and the transition cavity 71 is located below the coarse grinding roller 6. A discharge port 72 is provided at the inner bottom of the transition cavity 71 and extends through the conical side of the fine grinding roller 7.

[0030] During the grinding process, food is put into the coarse grinding bin 1 through the feed port at the top of the coarse grinding bin 1, and the food is coarsely ground inside the coarse grinding bin 1. The coarse grinding roller 6 coarsely grinds the food, and since the coarse grinding roller 6 has a large grinding gap, the grinding and damage to the food is not thorough. Therefore, when the food is coarsely ground, there is less adhesion, the adhesion force is lighter, and the food is easily pushed downward by the subsequent food. Therefore, inside the coarse grinding bin 1, the food is self-propelled and cleaned, and it is less likely to cause adhesion and blockage.

[0031] When the food is coarsely ground, the coarsely ground food passes through the coarse grinding bin 1 and falls into the transition chamber 71. When the fine grinding roller 7 rotates, the food spreads outward due to the centrifugal force and falls into the fine grinding area through the discharge port 72, where it is finely ground.

[0032] Among them, the transition chamber 71 is used to temporarily store the coarsely ground food and slowly discharge the food through the discharge port 72, thereby effectively reducing the amount of food entering the fine grinding area at a single time. By controlling the amount of food entering the fine grinding area, the purpose of controlling the grinding effect is achieved, thereby effectively improving the overall effect of food grinding.

[0033] During the fine grinding process inside the conical inner bin 3, the circulating fan 11 forms a spiral upward annular flow airflow through the guide cavity 9 inside the conical inner bin 3, and the annular flow of gas drives the food powder to diffuse inside the conical inner bin 3, thereby improving the grinding quality. At the same time, the powder that meets the grinding requirements will enter the guide cavity 9 through the annular mesh strips 91 during the grinding process, and enter the upper collection cavity 10 driven by the airflow inside the guide cavity 9.

[0034] When grinding is completed, the food in the upper collecting chamber 10 can enter the lower discharging chamber 12 through the guide pipe 13 driven by gas, and at the same time, the finely ground food in the conical inner bin 3 falls downward into the lower discharging chamber 12 and is then discharged, completing the food grinding process.

[0035] Through the secondary grinding process of coarse grinding and fine grinding, the effect of food grinding is further improved.

[0036] Example 2. Further on the basis of Example 1, reference Figure 3 , Figure 7-Figure 9 The fine grinding roller 7 is provided with an upper fine grinding protrusion 73 and a lower fine grinding protrusion 74 in sequence above and below. The lower fine grinding protrusion 74 is movably plugged into the fine grinding roller 7. A pressure spring 741 is provided between the lower fine grinding protrusion 74 and the fine grinding roller 7. A reinforcing plate 31 is provided on the inner wall of the conical inner bin 3. A fine grinding semicircular block 32 is provided on the inner wall of the reinforcing plate 31. The upper fine grinding protrusion 73 and the lower fine grinding protrusion 74 are both engaged with the fine grinding semicircular block 32. A pressure detector is provided on the inner side of the upper fine grinding protrusion 73 for detecting the food grinding pressure.

[0037] It should be noted that the upper fine grinding block 73 and the lower fine grinding block 74 respectively form a first fine grinding area and a second fine grinding area. When the food is finely ground by the fine grinding roller 7, the powder first enters the first fine grinding area, and is finely ground once by the upper fine grinding block 73 in the first fine grinding area. After completing the first fine grinding, the powder falls into the second fine grinding area and is finely ground a second time in the second fine grinding area.

[0038] Among them, in the first fine grinding area, the internal pressure detector of the upper fine grinding protrusion 73 detects the grinding pressure, the pressure detector and the pressure regulating component 8 are electrically connected, and the pressure regulating component 8 adjusts the grinding pressure according to the pressure detector, thereby ensuring the grinding effect of powder grinding.

[0039] refer to Fig. 9 In an optional embodiment, a guide plate 92 is provided inside the guide cavity 9, a heating plate 93 is provided on the outer side of the guide cavity 9, and the guide plate 92 is provided with a driving adjustment mechanism for adjusting the gas flow rate and flow direction inside the guide cavity 9.

[0040] It should be noted that when the gas is inside the guide chamber 9, the inclination angle of the guide plate 92 can be controlled to adjust the flow velocity of the gas inside the guide chamber 9. When the guide plate 92 tends to fit the inner wall of the guide chamber 9, the flow velocity is faster. When the guide plate 92 is perpendicular to the inner wall of the guide chamber 9, the resistance to the gas inside the guide chamber 9 is increased, thereby reducing the flow velocity of the gas inside the guide chamber 9 and increasing the amount of gas flowing into the grinding gap inside the conical inner chamber 3, thereby improving the grinding effect inside the conical inner chamber 3.

[0041] At the same time, during the flow of gas inside the guide cavity 9, the heating plate 93 heats the gas, thereby increasing the temperature of the fine grinding area of ​​the conical inner chamber 3 to reduce the adhesion of oily food, thereby reducing the phenomenon of agglomeration of oily food due to crushing.

[0042] Furthermore, the flowing gas takes away the high temperature generated by grinding, which can effectively ensure the temperature stability of the grinding area. The temperature of the flowing gas in the guide cavity 9 can be ensured by the heating plate 93, thereby reducing the viscosity of oily food. The flowing gas can also take away the accumulated grinding temperature to avoid the generation of local high temperature and the damage of food due to high temperature, thereby ensuring the stability of the temperature in the grinding area and further ensuring the grinding quality.

[0043] refer to Figure 7 and Figure 8 In an optional embodiment, the area of ​​the fine grinding roller 7 located at the lower fine grinding protrusion 74 is set to be elliptical, and the lower fine grinding protrusion 74 forms a narrow mouth area and a wide mouth area. The narrow mouth area and the wide mouth area formed by the lower fine grinding protrusion 74 rotate with the rotation of the fine grinding roller 7.

[0044] The gap between the upper fine grinding protrusion 73 and the conical inner chamber 3 is larger than the narrow opening area of ​​the lower fine grinding protrusion 74 and smaller than the wide opening area.

[0045] It should be noted that when the powder flows to the narrow mouth area, the narrow mouth is compressed, which increases the powder grinding pressure and thus increases the powder grinding effect. When the powder flows to the wide mouth area, the compressed powder is diffused and crushed in the wide mouth area, avoiding the agglomeration and adhesion of high-viscosity materials and improving the grinding effect.

[0046] At the same time, the annular upward-flowing airflow circulates alternately in the wide-mouth area and the narrow-mouth area, and the effect of gas-assisted food diffusion is further increased by changing the gas flow rate in the narrow-mouth area and the wide-mouth area.

[0047] refer to Figure 7 and Figure 8 And because the upper fine grinding protrusion 73 and the lower fine grinding protrusion 74 arranged outside the fine grinding roller 7 are both engaged with the fine grinding semicircular block 32, during the grinding process, the conical inner bin 3 can be driven to vibrate at the same time, thereby achieving the effect of vibration-assisted anti-sticking.

[0048] Embodiment 3 is based on Embodiment 2, and its difference lies in that a pressure air cavity 744 is formed in the connection area between the lower fine grinding protrusion 74 and the fine grinding roller 7, an exhaust hole 742 is opened inside the lower fine grinding protrusion 74, a sealing cover 743 is hinged at the end of the lower fine grinding protrusion 74, a damping sliding connection is formed between the lower fine grinding protrusion 74 and the fine grinding roller 7, and the opening direction of the sealing cover 743 is adapted to the rotation direction of the fine grinding roller 7.

[0049] In the narrow mouth area, the pressure of the lower fine grinding protrusion 74 increases, and the lower fine grinding protrusion 74 compresses the pressure air cavity 744. At the same time, since the sealing cover 743 abuts against the reinforcing plate 31 of the conical inner bin 3, the gas inside the pressure air cavity 744 is compressed. When the lower fine grinding protrusion 74 rotates to the wide mouth area, the sealing cover 743 opens under the top pressure of the compressed gas, and the gas is ejected outward at the same time. The ejected gas acts on the inner wall of the conical inner bin 3, further preventing the powder food from sticking together.

[0050] After the gas is ejected, the sealing cover 743 is re-sealed on the outside of the exhaust hole 742 as the fine grinding roller 7 rotates.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding and mixing device for food production, comprising a coarse grinding chamber (1) and a fine grinding chamber (2), wherein the interior of the fine grinding chamber (2) is fixedly connected to a conical inner chamber (3), characterized in that: A spiral annular flow guide chamber (9) is provided inside the conical inner bin (3), a circulating fan (11) is provided outside the flow guide chamber (9), an upper material collection chamber (10) is provided between the fine grinding bin (2) and the fine grinding roller (7), the flow guide chamber (9) is connected and extends into the upper material collection chamber (10), an air outlet (101) is provided at the top of the upper material collection chamber (10), and an annular mesh bar (91) is fixedly connected to the outside of the bottom section of the flow guide chamber (9) located at the upper material collection chamber (10).

2. A grinding and mixing device for food production according to claim 1, characterized in that: The interior of the fine grinding bin (2) is rotatably connected to an output shaft (4), the exterior of the output shaft (4) is provided with a fine grinding roller (7) and a coarse grinding roller (6), a speed reducing mechanism (5) is provided between the output shaft (4) and the fine grinding roller (7), the output shaft (4) is connected to the fine grinding roller (7) via the speed reducing mechanism (5), the coarse grinding roller (6) is movably connected to the top of the output shaft (4), the coarse grinding roller (6) is rotatably connected to the interior of the coarse grinding bin (1), a feed port is provided at the top of the coarse grinding bin (1), a lower discharge chamber (12) is provided below the fine grinding roller (7), and a material guide pipe (13) is provided between the upper material collecting chamber (10) and the lower discharge chamber (12).

3. A grinding and mixing device for food production according to claim 2, characterized in that: The speed reduction mechanism (5) comprises a main gear (51) fixedly connected to the outside of the output shaft (4); the outside of the main gear (51) is meshedly connected to a connecting gear (52); the outside of the connecting gear (52) is meshedly connected to an outer gear ring (53); the outer gear ring (53) is fixedly connected to the inner cavity of the fine grinding roller (7); the bottom of the fine grinding roller (7) is rotatably connected to a support plate (33); the connecting gear (52) is mounted on the top of the support plate (33); a pressure regulating assembly (8) is provided at the bottom of the support plate (33); the pressure regulating assembly (8) is fixedly mounted on the bottom of the fine grinding chamber (2); and the pressure regulating assembly (8) is used to control the upward and downward movement of the fine grinding roller (7).

4. The grinding and mixing device for food production according to claim 1, characterized in that: The fine grinding roller (7) is provided with an upper fine grinding protrusion (73) and a lower fine grinding protrusion (74) in sequence above and below, the lower fine grinding protrusion (74) and the fine grinding roller (7) are movably plugged, a pressure spring (741) is provided between the lower fine grinding protrusion (74) and the fine grinding roller (7), the inner wall of the conical inner bin (3) is provided with a reinforcing plate (31), the inner wall of the reinforcing plate (31) is provided with a fine grinding semicircular block (32), and the upper fine grinding protrusion (73) and the lower fine grinding protrusion (74) are both engaged with the fine grinding semicircular block (32).

5. A grinding and mixing device for food production according to claim 4, characterized in that: A guide plate (92) is arranged inside the guide cavity (9), a heating plate (93) is arranged on the outer side of the guide cavity (9), and the guide plate (92) is provided with a driving adjustment mechanism for adjusting the flow velocity and flow direction of the gas inside the guide cavity (9).

6. A grinding and mixing device for food production according to claim 4, characterized in that: The fine grinding roller (7) is arranged in an elliptical shape in the area of ​​the lower fine grinding protrusion (74), and the lower fine grinding protrusion (74) forms a narrow mouth area and a wide mouth area.

7. The grinding and mixing device for food production according to claim 4, characterized in that: A pressure air chamber (744) is formed in the connection area between the lower fine grinding protrusion (74) and the fine grinding roller (7); an exhaust hole (742) is provided inside the lower fine grinding protrusion (74); a sealing cover (743) is hingedly connected to the end of the lower fine grinding protrusion (74); and a damping sliding connection is formed between the lower fine grinding protrusion (74) and the fine grinding roller (7).

8. The grinding and mixing device for food production according to claim 6, characterized in that: The gap between the upper fine grinding convex block (73) and the conical inner bin (3) is larger than the narrow opening area of ​​the lower fine grinding convex block (74) and smaller than the wide opening area.

9. The grinding and mixing device for food production according to claim 1, characterized in that: A transition cavity (71) is provided at the top of the fine grinding roller (7), the transition cavity (71) is located below the rough grinding roller (6), and a feed opening (72) is provided at the inner bottom of the transition cavity (71) and extends through the conical side surface of the fine grinding roller (7).

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