CN114377779A

CN114377779A - Manual stone mill

Info

Publication number: CN114377779A
Application number: CN202011123543.4A
Authority: CN
Inventors: 赵洪祥
Original assignee: Shandong Chenwo Intelligent Technology Co ltd
Current assignee: Shandong Chenwo Intelligent Technology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2022-04-22

Abstract

The invention discloses a manual stone mill which comprises an upper millstone and a lower millstone, wherein grinding teeth are arranged between the upper millstone and the lower millstone, the grinding teeth between the upper millstone and the lower millstone are uniformly divided into a plurality of regions, each region comprises convex teeth which are sequentially arranged, the convex teeth in the same region are arranged in parallel, a groove is formed between every two adjacent convex teeth, each convex tooth comprises a rough grinding tooth and a fine grinding tooth, the fine grinding teeth are positioned at the outer sides of the rough grinding teeth, the cross sections of all the convex teeth are triangular, one surface of each convex tooth is a gentle slope, the other surface of each convex tooth is a steep slope, when the stone mill is used for grinding, the upper millstone rotates towards the steep slope from the gentle slope direction of each convex tooth, and a feeding hole is formed in the upper millstone. The grinding teeth are based on the asymmetrical structures of the convex teeth, so that materials can be ground more uniformly, finely and thoroughly, the grinding efficiency is higher, the soybean milk yield is higher, the grinding effect in the middle grinding process is promoted, the phenomenon of loose love is avoided, and the discharging is promoted.

Description

Manual stone mill

Technical Field

The invention relates to the technical field of manual stone mills, in particular to a manual stone mill.

Background

A stone mill is an apparatus for processing grains such as rice, wheat and beans into powder and pulp, the traditional stone mill is generally formed by overlapping two stone discs and is divided into an upper grinding disc and a lower grinding disc, textures, namely grinding teeth, are carved on the joint between the upper grinding disc and the lower grinding disc, a feed port is formed in the upper grinding disc, the grains enter the grinding teeth between the upper grinding disc and the lower grinding disc through the feed port, the powder or the pulp is formed by extrusion and friction, and the powder or the pulp is pushed out simultaneously in the rotating process of the upper grinding disc.

In modern society, although science and technology are developed at a high speed, foods processed by the stone mill can keep pure flavor of the foods, the damage of nutrient components is less, and compared with traditional electric processing equipment, the stone mill has special flavor, so the stone mill has an irreplaceable position all the time.

The grinding teeth between two present stone mills are mostly the grinding teeth of even setting, and the stone mill produces the loose phenomenon of love easily in the grinding process like this, and the thick liquids of grinding do not toward the ejection of compact outward, and the inhomogeneous of grinding moreover, grinding efficiency is low, and the grinding particle diameter is thick, can not the efficient squeeze out nutrient substance from above-mentioned grain, and the discharge rate that causes the raw materials is low, causes the waste of raw materials.

Disclosure of Invention

The invention aims to overcome the defects and provide the manual stone mill, so that the raw materials are ground more uniformly and finely, the grinding efficiency is improved, and the phenomenon of loose love is reduced.

The technical scheme adopted by the invention is as follows:

the utility model provides a manual stone mill, includes runner stone and lower mill, is provided with the gerar grinding between runner stone and the lower mill, the gerar grinding between runner stone and the runner stone is equallyd divide for a plurality of regions, and every region all is including arranging the dogtooth that sets up in proper order, and the dogtooth parallel arrangement in the same region is the slot between the adjacent dogtooth, the dogtooth includes coarse grinding tooth and fine grinding tooth, and the fine grinding tooth is located the outside of coarse grinding tooth, and the cross-section of all dogteeth is triangle-shaped, and the one side of dogtooth is the gentle slope, and the another side of dogtooth is the abrupt slope, when at the grinding in-process, the runner stone is rotated to the slope direction by the gentle slope direction of dogtooth, be provided with the feed hole on the runner stone, correspond the feed hole on the lower terminal surface of runner stone and be provided with transition region, transition region extends in the direction of rotation of runner stone.

As a further optimization, the grinding teeth between the upper grinding disc and the lower grinding disc are divided into eight regions, the edge of each region is along the radial direction of the upper grinding disc, and the length direction of the convex teeth is parallel to the edge line of each region.

As a further optimization, the lower end of the lower grinding disc is provided with a material collecting disc, the lower grinding disc is placed in the material collecting disc, an annular material collecting groove is arranged on the material collecting disc and positioned on the outer side of the lower grinding disc, an anti-seepage pad is arranged on the contact end face between the lower grinding disc and the material collecting disc, a material outlet is arranged on the annular material collecting groove, the horizontal height of the material outlet side of the material collecting disc is lower than that of the side far away from the material outlet, a scraping plate rotating along with the upper grinding disc is arranged on the upper grinding disc, and the lower edge of the scraping plate corresponds to the longitudinal section of the material collecting disc.

As a further optimization, the lower end of the material collecting disc is provided with a support frame, and the discharge hole is formed in the side wall of the material collecting disc.

As a further optimization, the lower end of the material collecting disc is provided with a supporting cylinder, the discharge port is arranged on the bottom surface of the material collecting disc, a drawer type material cylinder is arranged in the supporting cylinder, a filter screen is arranged on the material cylinder, and when the material cylinder is positioned in the supporting cylinder, the material cylinder is positioned at the lower side of the discharge port.

As a further optimization, a grinding core is arranged between the upper grinding disc and the lower grinding disc, one end of the grinding core is provided with a pressing assembly, the pressing assembly comprises a pressing cap and a pressing spring, the pressing cap is in threaded connection with the grinding core, the pressing spring is located between the pressing cap and the adjacent grinding disc, and the other end of the grinding core is fixed through a fastener.

As a further optimization, a first groove is formed in the middle of the upper end face of the upper grinding disc, one end of the compression spring abuts against the compression cap, the other end of the compression spring abuts against the bottom of the first groove through two steel sheets which are stacked, and the two steel sheets are connected in a sliding mode.

As a further optimization, the middle part of the lower end surface of the upper grinding disc is provided with a second groove, the middle part of the grinding core is provided with a pressure plate, the lower end of the grinding core is fixed through a fastening nut, and the pressure plate is tightly pressed on the lower grinding disc.

As a further optimization, the upper grinding disc is provided with a handle, the handle comprises an extension rod and a holding handle, the extension rod is connected with the upper grinding disc through a telescopic structure, the holding handle is connected with the extension rod through a base, and the holding handle is rotatably connected with the base.

As a further optimization, the base is hinged with the extension rod, the rotation direction of the base is the direction close to and far away from the upper grinding disc, the extension rod is provided with a spring pin, the base is provided with a positioning hole corresponding to the extension rod, and when the holding handle is in a vertical state, the spring pin is inserted into the positioning hole on the base.

The invention has the following advantages:

1. the grinding teeth are based on the asymmetrical structures of the convex teeth, so that materials can be ground more uniformly, finely and thoroughly, the grinding efficiency is higher, the soybean milk yield is higher during grinding, the grinding effect in the middle grinding process is promoted, the phenomenon of loose love is avoided, and the discharging is promoted;

2. the handle is adjustable in transverse length, the extension rod can be arranged into a telescopic structure, the extension rod can be provided with a plurality of mounting holes, the extension length can be adjusted by connecting different mounting holes, the transverse length of the handle is increased during grinding, the handle is more labor-saving, and the occupied space is smaller during storage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is another schematic perspective view of the present invention

FIG. 5 is a gear grinding schematic diagram of the upper grinding disc;

FIG. 6 is a gear grinding schematic diagram of the lower grinding disc;

FIG. 7 is a schematic cross-sectional view A-A of FIG. 6;

FIG. 8 is a schematic cross-sectional view of B-B of FIG. 6;

FIG. 9 is a schematic view of one of the structures of the handle;

FIG. 10 is a perspective view of an alternative handle configuration;

FIG. 11 is a cross-sectional schematic view of the handle structure of FIG. 10;

FIG. 12 is a perspective view of an alternative handle configuration;

FIG. 13 is a cross-sectional schematic view of the handle structure of FIG. 12;

FIG. 14 is a schematic view of a mounting hole;

fig. 15 is a schematic view of the cartridge.

Wherein: 1. an upper grinding disc, 2, a lower grinding disc, 3, a material collecting disc, 4, grinding cores, 5, a fastening nut, 6, a supporting seat, 7, a handle, 8, a scraping plate, 9, a third anti-seepage pad, 10, a pressing cap, 11, a pressing sheet, 12, a first anti-seepage pad, 13, a pressing spring, 14, a steel sheet, 15, a second anti-seepage pad, 16, a pressing plate, 17, a supporting cylinder, 18, a charging cylinder, 19, a filter screen, 20, coarse grinding teeth, 21, fine grinding teeth, 22, a transition area, 23, a fixing bolt, 24, a handle, 25, a handle, 1-1, a material feeding port, 1-2, a first groove, 1-3, a second groove, 3-1, an annular material collecting groove, 3-2, a material discharging port, 3-3, a material discharging port, 7-1, a first grinding core, 7-2, a spring pin, 7-3, a second grinding core, 7-4 and a sleeve, 7-5 parts of a rotating shaft, 24-1 parts of a rotating shaft, 24-2 parts of a limiting pin, 24-3 parts of a middle rod, 25-1 parts of a straight rod, 25-2 parts of a mounting hole, 25-3 parts of a handle connecting hole.

Detailed Description

The present invention is further described in the following with reference to the drawings and the specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention, and the embodiments and the technical features of the embodiments can be combined with each other without conflict.

It is to be understood that the terms first, second, and the like in the description of the embodiments of the invention are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order. The "plurality" in the embodiment of the present invention means two or more.

The term "and/or" in the embodiment of the present invention is only an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, B exists alone, and A and B exist at the same time. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The embodiment provides an anti-seepage manual stone mill, as shown in fig. 1, the anti-seepage manual stone mill comprises an upper grinding disc 1 and a lower grinding disc 2, a feeding port 1-1 is arranged on the upper grinding disc 1, a handle 7 for driving the upper grinding disc 1 to rotate is arranged on the upper grinding disc 1, a grinding core 4 is arranged in the middle of the upper grinding disc 1 and the lower grinding disc 2, and the grinding core 4 penetrates through the upper grinding disc 1 and the lower grinding disc 2. As shown in fig. 6 to 9, in the present embodiment, grinding teeth are provided on the end surfaces of the upper millstone 1 and the lower millstone 2, fig. 5 is the grinding teeth on the upper millstone 1, fig. 6 is the grinding teeth on the lower millstone 2, the grinding teeth of the upper millstone 1 and the grinding teeth of the lower millstone are in a state of being capable of meshing with each other, neither the middle region of the upper millstone and the lower millstone around the connecting hole is provided with the grinding teeth, and the middle region is a flat region, and the flat region of the upper millstone 1 and the flat region of the lower millstone 2 form a grinding chamber at the middle region, so as to dispense materials to the surrounding grinding teeth. The grinding teeth on the upper grinding disc 1 and the grinding teeth on the lower grinding disc 2 are equally divided into eight regions, the edge of each region is along the radial direction of the corresponding grinding disc, each region comprises convex teeth which are sequentially arranged, the convex teeth in the same region are arranged in parallel, the length direction of each convex tooth is parallel to the edge line of each region, in the machining process, generally, a partition positioning edge line is firstly carried out, then each grinding tooth is chiseled in sequence by taking the edge line as a reference, the length of the convex teeth which are close to the edge line in each region is the longest, the convex teeth which are far away from the edge line in each region can be limited by the adjacent edge line and gradually shortened, grooves are formed between the adjacent convex teeth, and the depth of the grooves between the adjacent convex teeth is gradually reduced from inside to outside. The dogtooth includes rough grinding tooth 20 and fine grinding tooth 21, and fine grinding tooth 21 is located rough grinding tooth 21's the outside, as shown in fig. 7 and fig. 8, the cross-section of all dogteeth is triangle-shaped, and the one side of dogtooth is the gentle slope, the another side of dogtooth is the abrupt slope, the gentle sloping face of dogtooth is the lapping surface, be promoting the in-process of runner stone 1 pivoted promptly, the grinding material is by the gentle slope of dogtooth towards the transition of abrupt slope, because the tooth of runner stone 1 and the state that can interlock mutually of the tooth of runner stone 2, consequently the gentle sloping face of the dogtooth on runner stone 1 and the gentle sloping face looks lock of the dogtooth on runner stone 2.

In the manual stone mill, the lower millstone is in a fixed state, the upper millstone 1 grinds materials through circulating rotation, and different from the lower millstone 2, the upper millstone 1 is also provided with feeding holes 1-1, the lower end surface of the upper millstone 1 is provided with a transition region 22 corresponding to the feeding holes 1-1, the transition region 22 diffracts in the rotating direction of the upper millstone 1, although the transition region 22 is shown in fig. 5, in practice, the transition region 22 has no obvious boundary line, the edge of the transition region 22 extends into a grinding tooth region, and the depth of the transition region 22 from the feeding holes 1-1 to the extending direction gradually becomes shallow. The grinding teeth between the grinding teeth of the upper grinding disc 1 and the lower grinding disc 2 are meshed with each other, because the depth of the groove is gradually reduced from inside to outside, the depth of the groove is larger than the wave crest height of the convex teeth, therefore, the distance between the convex teeth of the upper grinding disc 1 and the grooves of the lower grinding disc 2 is gradually reduced, the grinding of material progress can be realized, the material is driven by the upper grinding disc 1 to rotate, the root of the rough grinding teeth 20 moves towards the fine grinding teeth, the grinding is realized from coarse to fine, the grinding time of the material can be prolonged by the asymmetrical structure on the two sides of the convex teeth, the material grinding is better and uniform, the grinding efficiency can be further improved, the material particles ground on the inner side are smaller, the material is convenient to move towards the edge to discharge, and the phenomenon of loose love is avoided.

The handle of the upper millstone 1 has various forms, and the handle 7 shown in fig. 9 comprises an extension rod and a holding handle arranged on the extension rod, the holding handle is in a vertical state, one end of an extension rod is connected on the upper grinding disc 1, the extension rod is a telescopic rod in the embodiment, the telescopic device comprises a first grinding core 7-1 and a second grinding core 7-3, one end of the first grinding core 7-1 is fixedly connected on the upper grinding disc 1, the second grinding core 7-3 is inserted at the other end of the first grinding core 7-1 in a sliding manner, the holding handle is connected to the end part of the second grinding core 7-3, a plurality of limiting holes are formed in the first grinding core 7-1 in the length direction, the second grinding core 7-3 is provided with a spring pin 7-2, and the spring pin 7-2 is inserted into one of the limiting holes in the first grinding core 7-1. The side wall of the upper grinding disc 1 is provided with a transverse connecting groove, and the first grinding core 4-1 is inserted into the transverse connecting groove and fixed through a fastening bolt 23. The holding handle comprises a sleeve 7-4 and a rotating shaft 7-5, the sleeve 7-4 is rotatably connected to the rotating shaft 7-5, and the root of the rotating shaft 7-5 is used for connecting an extension rod.

As another embodiment of the handle, as shown in fig. 12 and 13, the handle comprises a straight bar 25-1 and a grip handle, one end of the straight bar 25-1 is provided with a mounting hole 25-2 for being connected to a lateral connecting groove of the upper grinding disc 1, the straight bar 25-1 is inserted into the lateral connecting groove and fixed by a fastening bolt 23, and the fastening bolt 23 is connected to the mounting hole 25-2 of the straight bar 24-1. In this embodiment, the straight rod 8 is provided with a plurality of handle connecting holes 25-3 along the length direction thereof, and the holding handle is inserted into one of the handle connecting holes 25-3 of the straight rod 25-1 and fixed by a bolt.

The mounting holes 25-2 on the straight rod 25-1 can be one or more, and when a plurality of mounting holes 25-2 are provided, as shown in fig. 13, the extending length of the straight rod 25-1 can be controlled by connecting different mounting holes 25-2 on the upper grinding disc 1. In this embodiment, in order to align the mounting hole of the straight rod 8 with the vertical connecting hole of the upper grinding disc 1, as shown in fig. 14, the mounting hole 25-2 of the straight rod 25-1 includes a spot-facing hole on the outer side and a threaded hole on the inner side, and the aperture of the spot-facing hole is larger than that of the threaded hole. When one of the mounting holes 25-2 is connected, the fastening bolt 23 is firstly inserted into the vertical connecting hole of the upper grinding disc 1, one end of the straight rod 25-1, provided with the mounting hole 25-2, is gradually inserted into the transverse connecting hole of the upper grinding disc 1, when the mounting hole 25-2 on the straight rod 25-1 is aligned with the vertical connecting hole on the upper grinding disc 1, the fastening bolt 23 sinks to a certain height due to the existence of the counter-facing hole, and then the fastening bolt is directly fixed through a wrench. Whether the connected mounting hole 25-2 is correct or not is judged by manually checking the extending length of the straight rod 8.

In order to further facilitate storage, another embodiment of the handle shown in fig. 10 and 11 includes an intermediate rod 24-3 and a holding handle, one end of the intermediate rod 24-3 is fixedly connected to the upper grinding disc 1 through a fastening bolt 23, the holding handle is hinged to the other end of the intermediate rod 24-3, the holding handle includes a base 24-1 and a sleeve, a limit pin 24-2 is arranged on the intermediate rod 24-3, a spring is arranged between the limit pin 24-2 and the intermediate rod 24-3, a limit groove is arranged on the base, when the holding handle is in a vertical state, the upper end of the limit pin 24-2 is inserted into the limit groove of the base, and the lower end of the limit pin 24-2 protrudes out of the end surface of the intermediate body 24-3, so that the limit pin 24-2 is conveniently pulled out.

As shown in fig. 2, a pressing assembly is arranged between the upper grinding disc 1 and the lower grinding disc 2, the pressing assembly is arranged at the upper end of the grinding core 4, and the lower end of the grinding core 4 is fixed by a fastening nut 5. The upper end surface of the upper grinding disc 1 is provided with a first groove 1-2, a pressing component is arranged in the first groove 1-2, the pressing component comprises a pressing cap 10 and a pressing spring 13, the pressing cap 10 is in threaded connection with the grinding core 4, the pressing spring 13 is arranged between the pressing cap 10 and the upper grinding disc 1, a pair of pressing sheets 11 is arranged between the pressing spring 13 and the pressing cap 10, two steel sheets 14 which are stacked are arranged between the pressing spring 13 and the bottom surface of the first groove 1-2, the two steel sheets 14 are both sleeved on the grinding core 4 and are in sliding connection with each other, the steel sheets 14 are used for avoiding friction between the pressing spring 13 and the upper grinding disc 1 when the upper grinding disc 1 is driven to rotate, a plane thrust bearing is arranged between the pressing spring 13 and the upper grinding disc 1 in the prior art, and certain lubricating oil can be added in the manufacturing process of the plane thrust bearing, if the upper grinding disc 1 is added with water, the water flows into the first groove 1-2 and flows along the first groove 1-2 to flow through the plane thrust bearing and then flows to a grinding surface, the water possibly carries lubricating oil to flow out when flowing through the plane thrust bearing to cause oil pollution to raw materials, through arranging the two steel sheets 14, the contact surface between the two steel sheets 14 is subjected to mirror surface treatment, the sliding property is good, and the oil pollution can be prevented, the upper end of the compression spring 13 is propped against the compression sheet 11, the lower end of the compression spring 13 is propped against the steel sheets 14, a first anti-seepage pad 12 is arranged between the two compression sheets 11, the inner diameter of the first anti-seepage pad 12 is smaller than the outer diameter of the compression sheet 11, and the outer diameter of the first anti-seepage pad 12 corresponds to the groove diameter of the first groove 1-2. The first anti-seepage pad 10 is mainly used for preventing water from flowing into a gap between the mandrel 3 and the upper grinding disc 1 when water is added in the grinding process, so that the mandrel 3 is rusted over time, the durability of the mandrel 3 is affected, and the slurry is polluted. Also avoid simultaneously grinding the raw materials and enter into first recess in, inconvenient clearance avoids the dust to enter into the abrasive surface through first recess simultaneously. In the above, the first impermeable cushion 12 is pressed by the two pressing sheets 11 to have an expansion phenomenon, so that the first impermeable cushion is in close contact with the first groove 1-2.

In this embodiment, the lower end of the upper millstone is provided with second grooves 1-3, the middle part of the grinding core 4 is provided with a pressure plate 16, the pressure plate 16 and the grinding core 4 are integrally formed, a second anti-seepage pad 15 is arranged between the pressure plate 16 and the end surface of the lower millstone 2, the pressure plate 16 and the second anti-seepage pad 15 are both positioned in the second grooves 1-3, and the outer diameter of the second anti-seepage pad 15 corresponds to the aperture of the second grooves 1-3. The second anti-seepage pad 15 is mainly used for preventing slurry in a grinding area from entering a gap between the grinding core 4 and the lower grinding disc 2, and the slurry is inconvenient to clean, and the slurry retained for a long time is deteriorated and smelly, so that the slurry in grinding is polluted. The second anti-seepage pad 15 is extruded by the pressure plate 16 to generate an expansion phenomenon, so that the edge of the second anti-seepage pad 15 is in closer contact with the inner wall of the second groove 1-3, and the end face of the second anti-seepage pad 1-3 is in closer contact with the end face of the lower grinding disc 2.

This embodiment the downside of lower mill 2 still is provided with a material collecting disk 3, lower mill 2 is placed on material collecting disk 3, and the outside that lies in lower mill 2 on material collecting disk 3 is provided with annular material collecting groove 3-1, and is provided with third prevention and seepage pad 9 between lower mill 2 and the material collecting disk 3, first prevention of seepage pad 12, second prevention of seepage pad 15, third prevention and seepage pad 9 all adopt edible silica gel material for prevent when the ejection of compact, during thick liquids infiltration is to the clearance between lower mill 2 and the material collecting disk 3. As shown in fig. 3, in the present embodiment, the upper millstone 1 is provided with a scraper 8 rotating with the upper millstone 1, the scraper 8 may be provided on a handle 7, the lower edge of the scraper 8 is attached to the annular trough 3-1, the lower edge of the scraper 8 corresponds to the longitudinal section of the annular trough 3-1, the wall of the annular trough is provided with a discharge port 3-2, and a container is placed under the discharge port 3-2 for receiving materials. The grinding core passes through the upper grinding disc 1, the lower grinding disc 2 and the material collecting disc 3 in sequence and then is fixed through the fastening nut 5, the pressing plate 16 and the fastening nut 5 are matched to fix the lower grinding disc 2 on the material collecting disc 3, and the upper grinding disc 1 can enable the lower grinding disc 2 to be in a more stable state in the rotating process.

As shown in FIGS. 4 and 5, as another embodiment of the material collecting tray 3, a material outlet 3-3 is provided at the bottom of the annular material collecting groove 3-1, the material outlet 3-3 is an arc extending along the bottom of the annular material collecting groove 3-1, the width of the trough of the annular material collecting groove 3-1 is not greater than the width of the material outlet 3-3, a closed supporting cylinder 17 is provided at the lower end of the material collecting tray 3, the supporting cylinder 17 is a shell structure and can be configured as a cylindrical shell or a polygonal shell, a drawer-type material cylinder 18 is provided in the supporting cylinder 17, as shown in FIG. 15, a filter screen 19 is provided at the upper part of the material cylinder 18, and when the material cylinder 18 is completely located in the supporting cylinder 17, the supporting cylinder 17 is located below the material outlet 3-3.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. The utility model provides a manual stone mill, includes that go up mill and lower mill are provided with the gerar grinding between last mill and the lower mill, its characterized in that: the grinding teeth between the upper millstone and the upper millstone are equally divided into a plurality of regions, each region comprises convex teeth which are arranged in sequence, the convex teeth in the same region are arranged in parallel, grooves are formed between adjacent convex teeth, the convex teeth comprise rough grinding teeth and fine grinding teeth, the fine grinding teeth are positioned outside the rough grinding teeth, the cross sections of all the convex teeth are triangular, one surface of each convex tooth is a gentle slope, the other surface of each convex tooth is a steep slope, when the grinding process is performed, the upper millstone is rotated towards the steep slope by the gentle slope direction of each convex tooth, a feeding hole is formed in the upper millstone, a transition region is formed in the lower end face of the upper millstone and corresponds to the feeding hole, and the transition region extends in the rotating direction of the upper millstone.

2. The manual stone mill of claim 1, wherein: the grinding teeth between the upper grinding disc and the lower grinding disc are equally divided into eight regions, the edge of each region is along the radial direction of the upper grinding disc, and the length direction of the convex teeth is parallel to the edge line of each region.

3. The manual stone mill of claim 1, wherein: the lower extreme of lower mill is provided with the collecting tray, and lower mill is placed in the collecting tray, and the outside that lies in lower mill on the collecting tray is provided with annular collecting groove, and is provided with the prevention of seepage pad on the contact surface between lower mill and the collecting tray, is provided with the discharge gate on the annular collecting groove, and the level of the discharge gate side of collecting tray is less than the level of the one side of keeping away from the discharge gate, is provided with along with the pivoted scraper blade of runner stone on the runner stone, and the lower limb of scraper blade is corresponding with the longitudinal section of collecting tray.

4. The manual stone mill of claim 3, wherein: the lower extreme of aggregate dish is provided with the support frame, the discharge gate sets up on the lateral wall of aggregate dish.

5. The manual stone mill of claim 3, wherein: the lower extreme of aggregate dish is provided with the support cylinder, the discharge gate sets up on the bottom surface of aggregate dish, is provided with the feed cylinder of drawer type in the support cylinder, is provided with the filter screen on the feed cylinder, and when the feed cylinder was located the support cylinder, the feed cylinder was located the downside of discharge gate.

6. The manual stone mill of claim 5, wherein: the grinding core is arranged between the upper grinding disc and the lower grinding disc, a pressing assembly is arranged at one end of the grinding core and comprises a pressing cap and a pressing spring, the pressing cap is in threaded connection with the grinding core, the pressing spring is located between the pressing cap and the adjacent grinding disc, and the other end of the grinding core is fixed through a fastener.

7. The manual stone mill of claim 6, wherein: the middle part of the upper end face of the upper grinding disc is provided with a first groove, one end of the compression spring is propped against the compression cap, the other end of the compression spring is propped against the bottom of the first groove through two steel sheets which are stacked, and the two steel sheets are connected in a sliding mode.

8. The manual stone mill of claim 7, wherein: the middle part of the lower end face of the upper grinding disc is provided with a second groove, the middle part of the grinding core is provided with a pressing plate, the lower end of the grinding core is fixed through a fastening nut, and the pressing plate is tightly pressed on the lower grinding disc.

9. The manual stone mill of claim 1, wherein: the upper grinding disc is provided with a handle, the handle comprises an extension rod and a holding handle, the extension rod is connected with the upper grinding disc through a telescopic structure, the holding handle is connected to the extension rod through a base, and the holding handle and the base are connected in a rotating mode.

10. The manual stone mill of claim 9, wherein: the base is hinged with the extension rod, the rotation direction of the base is the direction close to and far away from the upper grinding disc, the extension rod is provided with a spring pin, the base is provided with a positioning hole corresponding to the spring pin, and when the holding handle is in a vertical state, the spring pin is inserted into the positioning hole in the base.