CN209753066U - Manual grinder - Google Patents

Abstract

the utility model discloses a manual grinder, drive division, grinding portion and ejection of compact portion including top-down coaxial coupling, the drive division includes the drive shaft, the center pin of drive shaft drive grinding portion, the drive shaft is connected with the gear kit, the multiplicable gear ratio of gear kit promotes manual grinding, and grinding portion includes the last grinding portion and the lower grinding portion of coaxial setting and upper and lower lock, grinding portion extends respectively from top to bottom and is equipped with corresponding blade, and lower grinding portion bottom is equipped with one or more holes with ejection of compact portion intercommunication, and the drive division is inhaled mutually with last grinding portion magnetism and is linked together, goes up grinding portion and links together through magnetism looks absorption with lower grinding portion.

Description

manual grinder

Technical Field

The utility model relates to a mill technical field, more specifically the utility model relates to a manual mill that says so.

Background

In life, people gradually have a demand for personalized small-amount smoking of tobacco or refined tobacco, hemp plants, hemp flowers, spices and herbs, and most of the products need to be crushed or ground for effective smoking. Many users desire a small manual grinder that is portable and can quickly grind herbs.

A conventional manual grinder generally includes an upper grinding plate and a lower grinding plate, each of which is provided with a blade. However, since there is no accelerating structure, the upper and lower grinding plates of the system mainly rely on direct-drive manual power for grinding. The grinding speed is slow and the herbaceous plants cannot be crushed quickly and effectively. After grinding is complete, the system requires manual opening of the bottom cap to remove the ground material, which must be accomplished by shaking the grinding plate or manual removal of the contents — the material cannot be automatically discharged. Accordingly, there is a need in the art for a manual grinder that is compact and easily portable and has a drive member with an acceleration transmission and an active discharge.

Disclosure of Invention

The utility model aims at providing a manual mill, this manual mill structure is small and exquisite, convenient to carry, and the driver part has transmission with higher speed, and ejection of compact portion has initiative discharge mechanism, has overcome the not enough of above-mentioned technique.

The technical scheme of the utility model is realized like this: a manual grinder comprises a driving part, a grinding part and a discharging part which are coaxially connected with each other; the driving part comprises a driving shaft, the driving shaft drives a central shaft of the grinding part, and the grinding part comprises an upper grinding part and a lower grinding part which are coaxially arranged and mutually buckled; the upper grinding part comprises an upper blade group, the lower grinding part comprises a lower blade group, and the upper blade group and the lower blade group are respectively composed of a plurality of upright blades which are annularly arranged; the bottom of the lower grinding part is provided with one or more holes communicated with the discharging part; the driving part and the upper grinding part are respectively provided with a first magnetic material at corresponding positions for magnetic attraction and connection; and the upper grinding part and the discharge part are coaxially and respectively provided with a second magnetic material for magnetic attraction so as to connect the upper grinding part and the lower grinding part together.

Preferably, the driving part further comprises an outer cover and a bottom cover connected to the bottom of the outer cover, the driving shaft is arranged in the center of the inner part of the outer cover and extends out of the bottom cover, and the driving part can drive the driving shaft to rotate when rotating.

Preferably, the outer cover is provided with an annular inner wall, and an inner gear is arranged on the annular inner wall; the driving shaft is coaxially provided with a driven gear, and an intermediate gear which is simultaneously meshed with the internal gear and the driven gear is arranged between the internal gear and the driven gear.

Preferably, the upper plane of the upper grinding part is attached to the lower plane of the bottom cover, the lower plane of the bottom cover is provided with a downward hollow boss, a groove for accommodating the hollow boss is formed in the position, corresponding to the hollow boss, of the upper grinding part, and the first magnetic material is embedded in the hollow boss and at the bottom of the groove respectively.

Preferably, a gear bracket is arranged inside the outer cover, and the driven gear and the intermediate gear are both arranged on the gear bracket.

Preferably, a tapered groove is formed in the center of the upper end of the outer cover downwards, and a stirring needle assembly is installed in the tapered groove.

Preferably, the agitator needle sleeve part includes agitator needle and extension rod, the agitator needle includes needle point, needle bar and syringe needle, both sides are equipped with the screw thread about the syringe needle, the extension rod includes that one end has the internal screw thread hollow tube, the needle point of agitator needle and the inboard screw thread of needle bar accessible syringe needle accomodate with extension rod internal thread connected's mode in the hollow tube, also the screw thread and the extension rod internal thread connected's in the accessible syringe needle outside the mode with the extension rod is connected and is used, syringe needle outside end portion inlay be equipped with third magnetic material with the third magnetic material that the bell groove bottom was equipped with inhales mutually.

Preferably, the upper grinding part further comprises a cutter box cover arranged on the upper portion of the upper blade group, the upper blade group comprises a circular blade disc and a plurality of blades vertically arranged on the lower plane of the circular blade disc, a rotating shaft connector is arranged on the upper portion of the upper blade group and connected with the lower portion of the cutter box cover, and the rotating shaft connector enables the upper blade group and the cutter box cover to be axially limited but can freely rotate around a shaft. The center of the cutter box cover and the center of the upper blade group are respectively provided with a first axial hole and a second axial hole, a positioning bolt and a spring are arranged between the first axial hole and the second axial hole, the outer wall of the upper part of the positioning bolt is matched with the inner wall of the first axial hole, the upper part of the positioning bolt is provided with an axial groove matched with the appearance of the driving shaft, and the outer wall of the lower part of the positioning bolt is matched with the inner wall of the second axial hole.

Preferably, the lower grinding part is provided with a tubular body and a centrally located third spindle hole.

preferably, the upper blade group and the lower blade group are provided with two circles of blades which are annularly arranged, the two circles of blades of the upper blade group are respectively and oppositely close to the two circles of blades of the lower blade group, and the blades are in a diamond shape.

Preferably, the outer wall of the discharging part is connected with the outer wall of the lower grinding part, and a cylinder is arranged at the center of the inside of the discharging part upwards; the cylinder passes the third axle center hole that lower grinding portion was equipped with, the cylinder top is inlayed and is equipped with second magnetic material.

Preferably, the discharging part comprises a funnel bin, and fan blades are arranged in the funnel bin; the outer wall of the funnel bin is connected with the outer wall of the lower grinding part, a fan shaft extends upwards from the center of the fan blade, the fan shaft is sleeved in the rotating shaft of the upper grinding part, the top end of the fan shaft is further embedded with the second magnetic material, and the driving shaft is sequentially connected with the rotating shaft of the upper grinding part and the fan shaft and drives the upper grinding part and the fan blade to rotate.

Preferably, the bottom of the funnel bin is provided with a funnel opening and a funnel cover for covering the funnel opening; a pin is arranged between the end part of the funnel opening and the funnel cover to connect the funnel opening and the funnel cover, and the funnel cover rotates around the pin to provide a channel for entering the funnel bin.

Preferably, the funnel mouth end is embedded with a spring arranged around the pin, and the positioning groove is used for receiving the spring at the funnel cover so as to position the funnel cover relative to the funnel mouth.

Preferably, the end part of the funnel opening and the funnel cover are respectively embedded with attracted magnetic materials at opposite positions.

Preferably, at least a part of the outer wall of the discharge part is made of a transparent material.

The utility model discloses manual mill's beneficial effect lies in: this manual mill structure is small and exquisite, convenient to carry, and its driver part has transmission mechanism with higher speed in addition, and discharge portion has initiative discharge mechanism, inhales the mode that the material was inhaled mutually through magnetism basically between each parts from top to bottom and connects, and convenience of customers makes things convenient for the user to make up the dismouting and uses, helps convenient and fast ground to realize individual user's individuation and few quantized user demand.

drawings

FIG. 1 is a front view of a manual grinder;

FIG. 2 is a cross-sectional view of a manual grinder;

FIG. 3 is an exploded view of the hand grinder;

FIG. 4 is a perspective view of the upper polishing portion;

FIG. 5 is a perspective view of the lower polishing portion;

FIG. 6 is a perspective view of the driving part;

FIG. 7 is a front view of another embodiment of a manual grinder;

FIG. 8 is a cross-sectional view of a manual grinder;

FIG. 9 is an exploded view of the hand grinder;

Fig. 10 is a sectional view of the driving part;

FIG. 11 is a perspective view of the driving part;

FIG. 12 is a perspective view of the mixing needle assembly;

FIG. 13 is a cross-sectional view of the mixing needle assembly;

FIG. 14 is an exploded view of the upper abrasive portion;

FIG. 15 is a cross-sectional view of the upper abrasive portion;

FIG. 16 is a top view of the tool box cover;

FIG. 17 is a perspective view of the upper blade set;

FIG. 18 is a cross-sectional view of the upper blade set;

FIG. 19 is a perspective view of the alignment pin;

FIG. 20 is a perspective view of the lower polishing portion;

FIG. 21 is a cross-sectional view of the lower abrasive section;

FIG. 22 is a bottom view of the lower grinding portion;

FIG. 23 is a cross-sectional view of the hopper bin;

Figure 24 is an exploded view of the hopper bin.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. Throughout the specification, the embodiments and examples shown should be considered as exemplary, rather than limiting, of the invention. That is, the following description provides examples and accompanying drawings that illustrate various examples for illustrative purposes. However, these examples should not be considered in a limiting sense, as they are intended only to provide examples of the present invention and not to provide an exhaustive list of all possible implementations thereof.

Specific embodiments of the present invention will be further described below using the following non-limiting examples, which are intended to illustrate various features. These examples are intended only to facilitate an understanding of embodiments of the invention and to further enable those skilled in the art to practice the invention. Accordingly, these examples should not be construed as limiting the scope of the invention. Furthermore, reference throughout this specification to "in one embodiment" or "in an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Examples

as shown in fig. 1 to 6, in an embodiment, a portable manual grinder comprises a driving part a, a grinding part B and a discharging part C which are coaxially connected from top to bottom, the driving part a comprises a driving shaft a0, the driving shaft a0 drives a central shaft B0 of the grinding part B, the grinding part B comprises an upper grinding part B1 and a lower grinding part B2 which are coaxially arranged and are buckled up and down, the upper grinding part B1 and the lower grinding part B2 are respectively provided with an upper blade group B11 and a lower blade group B21 which are composed of a plurality of upright blades B00, the blades of the upper blade group B11 and the lower blade group B21 are respectively arranged in a ring shape, and when the two blade groups are buckled together, the blades of the upper blade group B11 are inserted and accommodated between the blades of the lower blade group B21. In some embodiments, when the upper blade set B11 and the lower blade set B21 are snapped together, the blades from the upper blade set B11 and the lower blade set B21 are relatively close to each other, and the target material is effectively cut, ground by the blades as the grinder rotates. The bottom of the lower grinding part B2 is provided with a sieve hole B20 communicated with a discharging part C below the lower grinding part B2, the driving part A and the upper grinding part B1 are respectively provided with a first magnetic material A01 and a first magnetic material B01 at corresponding positions and are detachably connected together through magnetic attraction, the upper grinding part B1 and the discharging part C are respectively provided with a second magnetic material B02 and a second magnetic material C02, and the upper grinding part B1 and the lower grinding part B2 are connected together through magnetic attraction. In some embodiments, the magnetic materials a01, B01, B02, and CO2 are together axially aligned along the central axis of the grinder.

As shown in fig. 6, the driving part a further includes an outer cover a1 and a bottom cover a2 connected to the bottom of the outer cover a1, the driving shaft a0 is disposed at the center of the inside of the outer cover a1 and extends out of the bottom cover a2, and the outer cover a1 can drive the driving shaft to rotate when rotating.

As shown in fig. 2-3, the outer wall of the discharging part C is connected to the outer wall of the lower grinding part B2, a cylinder C1 is disposed inside the discharging part C along the central axis, the cylinder C1 passes through a third central hole B230 disposed in the lower grinding part B2, and a second magnetic material C02 is embedded in the top end of the cylinder C1.

In use, the user places the material to be ground between the groups of blades B11 and B21 of the grinding portions B1 and B2 and then turns off the grinder. The magnetic connection helps to align and keep the grinder closed during operation. The user then applies manual force to drive section a, which rotates drive shaft a1, thereby driving upper abrasive section B1 to rotate. The material is cut and ground by the interaction of the blade sets B11 and B21, and the ground material falls through the hole B20 of the lower grinding section B2 into the discharge section C. The outfeed section C is removable from the grinding section B so that a user can collect the ground material therein.

fig. 7-24 depict another embodiment of the present invention. As shown in fig. 7-9, a manual grinder comprises a driving part a, a grinding part B and a discharging part C which are coaxially connected, wherein the driving part a comprises a driving shaft a0, the driving shaft a0 drives a central shaft B0 of the grinding part B, the grinding part B comprises an upper grinding part B1 and a lower grinding part B2 which are coaxially arranged and connected up and down, the upper grinding part B1 and the lower grinding part B2 are respectively provided with an upper blade group B11 and a lower blade group B21 which are composed of a plurality of upright blades, and the blades of the upper blade group B11 and the lower blade group B21 are respectively arranged in a ring shape, so that when the two blade groups are buckled together, the blades of the upper blade group B11 are inserted and accommodated between the blades of the lower blade group B21. In some embodiments, when snap-fitted together, the blades of the upper blade set B11 and the lower blade set B21 are relatively close to each other, and the target material is effectively cut, ground by the blades as the grinder rotates. The bottom of the lower grinding part B2 is provided with a sieve hole B20 communicated with a discharging part C below the lower grinding part B2, the driving part A and the upper grinding part B1 are respectively provided with a first magnetic material A01 and a first magnetic material B01 at corresponding positions and are detachably connected together through magnetic attraction, the upper grinding part B1 and the discharging part C are respectively provided with a second magnetic material B02 and a second magnetic material C02, and the upper grinding part B1 and the lower grinding part B2 are connected together through magnetic attraction. In some embodiments, the magnetic materials a01, B01, B02, and CO2 are together axially aligned along the central axis of the grinder. By means of the magnetic connection, the grinder can be easily assembled, disassembled and cleaned.

As shown in fig. 10-11, the driving part a further includes an outer cover a1 and a bottom cover a2 connected to the bottom of the outer cover a1, the driving shaft a0 is disposed at the center of the inner portion of the outer cover a1 and extends out of the bottom cover a2, and the outer cover a1 can drive the driving shaft a0 to rotate when rotating. The outer cover A1 is provided with an annular inner wall, an internal gear A11 is arranged on the annular inner wall, a driven gear A13 is coaxially arranged on the driving shaft A0, and an intermediate gear A12 which is meshed with the internal gear A11 and the driven gear A13 is arranged between the internal gear A11 and the driven gear A13. The annulus gear a11 is a drive gear that transfers power to the driven gear a13 under manual rotational force to accelerate the drive shaft a0 by increasing the gear ratio. The cover A1 can rotate in both forward and reverse directions under the action of human power.

the upper plane of the upper grinding part B1 is attached to the lower plane of the bottom cover A2, the lower plane of the bottom cover A2 is provided with a downward hollow boss A21, the position of the upper grinding part relative to the hollow boss is provided with a groove B17 for accommodating the hollow boss A21, and the first magnetic material A01 is embedded at the bottoms of the hollow boss A21 and the groove B17 respectively. The outer cover A1 is internally connected with a gear bracket A14, and the shafts of the driven gear A13 and the intermediate gear A12 are arranged on a gear bracket A14.

The center of the upper end of the outer cover A1 is downwards provided with a tapered groove A15, a stirring needle sleeve component A16 is arranged in the tapered groove A15, and a silica gel sleeve A17 is arranged between the tapered groove A15 and the stirring needle sleeve component A16. The silicone sleeve helps to secure the agitator needle hub. The tapered groove a15 makes full use of the extra space of the outer cover to accommodate the pin, and the pin a163 is used for cleaning when the sieve holes are clogged and the ground material adheres to the blade.

As shown in fig. 12-13, the probe assembly a16 includes a probe a161 and an extension rod a162, the extension rod is used to extend the probe, the probe a161 includes a needle point a1610, a needle rod a1611 and a needle a1612, threads are disposed on the upper and lower sides of the needle a1612, the extension rod a162 includes a hollow tube a1620 having an internal thread at one end, the needle point and the needle rod of the probe a161 can be stored in the hollow tube a1620 by connecting the internal thread of the extension rod with the internal thread at the inner side of the needle, or can be connected to the extension rod a162 by connecting the external thread of the needle a1612 with the internal thread of the extension rod, and a third magnetic material a163 is embedded in the end of the needle and attracted to the third magnetic material a163 disposed at the bottom of the tapered groove.

as shown in fig. 14-19, the upper grinding part B1 further includes a cutter box cover B12 disposed on the upper portion of the upper blade group B11, the upper blade group B11 includes a circular blade disc B111 and a plurality of blades B00 extending from the lower plane of the circular blade disc and disposed vertically, the upper portion of the upper blade group B11 is provided with a rotating shaft connector B13 connected to the lower portion of the cutter box cover B12, the rotating shaft connector B13 axially limits the upper blade group B11 from the cutter box cover B12 but is freely rotatable around the shaft, the centers of the cutter box cover B12 and the upper blade group B11 are respectively provided with a first axial hole B120 and a second axial hole B110, a positioning bolt B14 and a spring B15 are disposed between the first axial hole B120 and the second axial hole B110, the upper portion of the positioning bolt B14 is engaged with the inner wall of the first axial hole B120, the upper portion of the positioning bolt B14 is provided with a groove B140 engaged with the driving shaft a0, the lower outer wall of the positioning bolt is engaged with the inner wall of the second axial hole B36, the positioning pin B14 simultaneously positions the first and second hub holes B120 and B110 radially, and the positioning pin B14 is displaced downwardly away from positioning the first hub hole B120 when connected to the drive shaft a 0.

As shown in fig. 20-21, the lower grinding part B2 includes a tubular body B22, a middle partition B23 is provided inside the tubular body B22, the lower blade group B21 and the sieve holes B20 are provided on the middle partition B23, and the middle partition B23 is further provided with a third axle hole B230.

As shown in fig. 22, the blades of the upper blade set B11 and the lower blade set B21 are each provided with two rings of blades, which in some embodiments are diamond shaped.

as shown in fig. 23-24, the discharging part C includes a hopper bin C5 and fan blades C6 arranged in the hopper bin, the outer wall of the hopper bin C5 is detachably connected with the outer wall of the lower grinding part B2, and a fan shaft extends upward from the center of the fan blades C6. The fan shaft is sleeved in the rotating shaft of the upper grinding part B1. The top end of the fan shaft is embedded with a second magnetic material to provide a detachable connection mode. The drive shaft a0 connects the rotation shaft of the upper grinding part B1 and the fan shaft in turn and drives the upper grinding part B1 and the fan blade C6 to rotate. Rotation of blade C6 loosens and transports ground material that has been ground and has leaked through opening B20 to the bottom, and actively discharges the ground material when funnel cover C51 is opened. This allows the user to pour out the ground material without having to disassemble the grinder.

in some embodiments, the bottom of the funnel bin C5 is provided with a funnel opening C50 and a funnel cover C51 for covering the funnel opening, a pin C52 is arranged between the end of the funnel opening and the funnel cover C51 for connecting the funnel opening and the funnel cover C3526, and the funnel cover C51 rotates around the pin for opening or closing the funnel opening C50 of the funnel bin C5.

In some embodiments, the end of the funnel opening C50 is provided with a cylindrical spring C53 at pin C52. The position of the funnel cover C51 relative to the cylindrical spring C53 is provided with a positioning groove (not shown) for accommodating a cylindrical spring top ball, and when the funnel cover C51 is closed or opened, the cylindrical spring C53 is embedded with the positioning groove for positioning so as to keep the closed or opened state of the funnel cover.

furthermore, in some embodiments, the end of the funnel opening C50 and the funnel cover C51 are embedded with attractive magnetic material C54 at opposite positions, and the funnel cover C51 abuts against the funnel opening C50 under the action of the attractive magnetic force unless sufficient manual force is applied to break the state. This prevents inadvertent opening of the funnel lid.

The material chosen for the grinder of the present invention is not particularly limited, however, in certain embodiments, at least a portion of the outer wall of the discharge portion C is made of a transparent material, facilitating the user to observe the contents therein.

it can be appreciated that the grinder is compact in appearance, portable and convenient to use. The gear driving part is provided with an accelerating transmission mechanism, and the discharging part is provided with an active discharging device, namely a fan. In some embodiments, most, if not all, of the components are magnetically removably attached to one another by magnetically attracting materials disposed opposite one another in corresponding locations, which facilitates assembly and disassembly by a user and access to a desired amount of abrasive material.

It is to be noticed that the term 'comprising', used in the claims, should not be interpreted as being limitative to the means listed thereafter. Thus, the scope of the expression "device comprising devices a and B" should not be limited to devices consisting only of components a and B. It means that, in the sense of the present invention, the only relevant components of the device are a and B. In other words, the terms "include," "include," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

The enumerated listing of components does not imply that any or all of the components are mutually exclusive, unless expressly specified otherwise. The terms "a" and "an" mean "one or more" unless otherwise specified.

Those skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which have been presented in this description for purposes of illustration and not of limitation. The specification and drawings are not intended to limit the exclusive scope of this patent document. It should be noted that various equivalents to the specific embodiments discussed in this specification may practice the invention as well. That is, while the present invention has been described in conjunction with specific embodiments, it is evident that many alternatives, modifications, permutations and variations will become apparent to those of ordinary skill in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and variations that fall within the scope of the included claims. The fact that a product, process, or method exhibits some variation from the example embodiment or embodiments described above does not imply that the product or process is outside the scope of the claims (literal and/or other legally recognized scope).

Claims (16)

1. A manual grinder, its characterized in that: comprises a driving part, a grinding part and a discharging part which are coaxially connected with each other; the driving part comprises a driving shaft, the driving shaft drives a central shaft of the grinding part, and the grinding part comprises an upper grinding part and a lower grinding part which are coaxially arranged and mutually buckled; the upper grinding part comprises an upper blade group, the lower grinding part comprises a lower blade group, and the upper blade group and the lower blade group are respectively composed of a plurality of upright blades which are annularly arranged; the bottom of the lower grinding part is provided with one or more holes communicated with the discharging part; the driving part and the upper grinding part are respectively provided with a first magnetic material at corresponding positions for magnetic attraction and connection; and the upper grinding part and the discharge part are coaxially and respectively provided with a second magnetic material for magnetic attraction so as to connect the upper grinding part and the lower grinding part together.

2. A manual grinder as claimed in claim 1, characterised in that: the driving part further comprises an outer cover and a bottom cover connected to the bottom of the outer cover, the driving shaft is arranged in the center of the inner portion of the outer cover and extends out of the bottom cover, and the driving part can drive the driving shaft to rotate when rotating.

3. A manual grinder as claimed in claim 2, wherein: the outer cover is provided with an annular inner wall, and an inner gear is arranged on the annular inner wall; the driving shaft is coaxially provided with a driven gear, and an intermediate gear which is simultaneously meshed with the internal gear and the driven gear is arranged between the internal gear and the driven gear.

4. A manual grinder as claimed in claim 3, wherein: the upper plane of the upper grinding part is attached to the lower plane of the bottom cover, a downward hollow boss is arranged on the lower plane of the bottom cover, a groove for accommodating the hollow boss is formed in the position, corresponding to the hollow boss, of the upper grinding part, and the first magnetic materials are embedded in the hollow boss and at the bottom of the groove respectively.

5. A manual grinder as claimed in claim 3, wherein: a gear support is arranged inside the outer cover, and the driven gear and the intermediate gear are both arranged on the gear support.

6. A manual grinder as claimed in claim 2, wherein: the center of the upper end of the outer cover is downwards provided with a conical groove, and a stirring needle sleeving part is installed in the conical groove.

7. The manual grinder according to claim 6, wherein: the utility model discloses a needle, including the conical groove bottom, the conical groove bottom is equipped with the third magnetic material, the stirring needle sleeve spare includes stirring needle and extension rod, the stirring needle includes needle point, needle bar and syringe needle, both sides are equipped with the screw thread about the syringe needle, the extension rod includes that one end has the internal screw thread hollow tube, the needle point of stirring needle and the inboard screw thread of needle bar accessible syringe needle and extension rod internal thread connected's mode accomodate in the hollow tube, also the screw thread in the accessible syringe needle outside and extension rod internal thread connected's mode with the extension rod is connected and is used, syringe needle outside end inlay be equipped with the third magnetic material with the third magnetic.

8. A manual grinder as claimed in claim 1, characterised in that: the upper grinding part also comprises a cutter box cover arranged at the upper part of the upper blade group, the upper blade group comprises a circular blade disc and a plurality of blades vertically arranged on the lower plane of the circular blade disc, the upper part of the upper blade group is provided with a rotating shaft connector which is connected with the lower part of the cutter box cover, and the rotating shaft connector enables the upper blade group and the cutter box cover to be axially limited but can freely rotate around a shaft; the center of the cutter box cover and the center of the upper blade group are respectively provided with a first axial hole and a second axial hole, a positioning bolt and a spring are arranged between the first axial hole and the second axial hole, the outer wall of the upper part of the positioning bolt is matched with the inner wall of the first axial hole, the upper part of the positioning bolt is provided with an axial groove matched with the appearance of the driving shaft, and the outer wall of the lower part of the positioning bolt is matched with the inner wall of the second axial hole.

9. A manual grinder as claimed in claim 1, characterised in that: the lower grinding part is provided with a tubular body and a third axial hole positioned at the center.

10. a manual grinder as claimed in claim 1, characterised in that: the upper blade group and the lower blade group are provided with two circles of blades which are arranged in an annular mode, the two circles of blades of the upper blade group are respectively close to the two circles of blades of the lower blade group, and the blades are in a diamond shape.

11. A manual grinder as claimed in claim 1, characterised in that: the outer wall of the discharging part is connected with the outer wall of the lower grinding part, and a cylinder is arranged upwards in the center of the discharging part; the cylinder passes the third axle center hole that lower grinding portion was equipped with, the cylinder top is inlayed and is equipped with second magnetic material.

12. A manual grinder as claimed in claim 1, characterised in that: the discharging part comprises a funnel bin, and fan blades are arranged in the funnel bin; the outer wall of the funnel bin is connected with the outer wall of the lower grinding part, a fan shaft extends upwards from the center of the fan blade, the fan shaft is sleeved in the rotating shaft of the upper grinding part, the top end of the fan shaft is further embedded with the second magnetic material, and the driving shaft is sequentially connected with the rotating shaft of the upper grinding part and the fan shaft and drives the upper grinding part and the fan blade to rotate.

13. A manual grinder as claimed in claim 12, wherein: the bottom of the funnel bin is provided with a funnel opening and a funnel cover for covering the funnel opening; a pin is arranged between the end part of the funnel opening and the funnel cover to connect the funnel opening and the funnel cover, and the funnel cover rotates around the pin to provide a channel for entering the funnel bin.

14. A manual grinder as claimed in claim 13, wherein: the end of the funnel opening is embedded with a spring arranged around the pin, and the positioning groove is used for receiving the spring at the funnel cover so as to position the funnel cover relative to the funnel opening.

15. A manual grinder as claimed in claim 13, wherein: the end part of the funnel opening and the funnel cover are respectively embedded with attractive magnetic materials at opposite positions.

16. a manual grinder as claimed in claim 3, wherein: at least a part of the outer wall of the discharging part is made of transparent material.