CN215308411U

CN215308411U - Rotary barrel assembly for medicine decocting machine and medicine decocting machine

Info

Publication number: CN215308411U
Application number: CN202120680132.9U
Authority: CN
Inventors: 高太益; 南原
Original assignee: Beijing Donghuayuan Medical Equipment Co Ltd
Current assignee: Beijing Donghuayuan Medical Equipment Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-12-28
Anticipated expiration: 2031-04-02

Abstract

The utility model discloses a rotary barrel component for a decocting machine and the decocting machine. The drug decocting machine also comprises a machine body and a drug decocting barrel, wherein the rear part of the drug decocting barrel is closed, the front part of the drug decocting barrel forms an opening, the drug decocting barrel is obliquely arranged on the machine body, and the rotary barrel is rotatably arranged in the drug decocting barrel; the barrel cover component is hinged on the machine body corresponding to the opening of the decoction barrel; drive arrangement sets up in the rear portion of decocting medicinal herbs bucket, and drive arrangement includes the drive shaft, and rotatory bucket is connected in the drive of drive shaft drive, and the rotatory bucket of drive rotates. On the basis of matching with the design of the rotary barrel, the rotary barrel component can well carry out high-efficiency separation and filtration on decocted liquid medicine, and the liquid medicine flowing out of the liquid outlet hole has no medicine residue and can not be blocked by a pipeline; the medicine is rotationally stirred in a rotary barrel during the decoction process, so that the concentration and the effective components of the obtained liquid medicine meet the standard requirements.

Description

Rotary barrel assembly for medicine decocting machine and medicine decocting machine

Technical Field

The utility model relates to the technical field of decocting equipment, in particular to a rotary barrel assembly for a decocting machine and the decocting machine.

Background

At present, the traditional Chinese medicine decoction is to completely soak the traditional Chinese medicine decoction pieces in water for decoction, so that the traditional Chinese medicine decoction pieces can be decocted completely. Therefore, if the number of the Chinese herbal pieces is large, water is added, so that the defects that the final decocted liquid medicine is large and the concentration is low are caused. If the water addition amount is reduced in order to increase the concentration of the liquid medicine, part of the traditional Chinese medicine decoction pieces cannot be decocted in water, so that the traditional Chinese medicine decoction pieces cannot be decocted completely, and the drug effect is reduced. Although traditional Chinese medicine decocting machines in the market have the problems of more medicines and less water, cloth bags wrapping traditional Chinese medicine decoction pieces are easy to scatter the medicines in the specific decocting process, so that subsequent liquid outlet pipelines are blocked, and moreover, in the decocting process, because the traditional Chinese medicine decoction pieces are wrapped in the cloth bags, a large amount of noise is generated in the rotary decocting process. For example, the prior art is as follows: chinese patent with application number CN201120230284.5 discloses an inclined roller traditional Chinese medicine decocting machine, which comprises: a body; the frying medicine cylinder is cylindrical, the rear part of the frying medicine cylinder is closed, the front part of the frying medicine cylinder is provided with an opening, and the frying medicine cylinder is obliquely arranged in the machine body; a rotary drum having a cylindrical shape, a rear closed front of which is formed with an opening, rotatably installed in the decocting drum, and a side surface of which is formed with a plurality of dehydration holes; a cover hinged to the body corresponding to the inlet for opening and closing the opening of the decocting drum; a driving means mounted to a rear portion of the cartridge for rotating the rotary drum; a rotary frame connecting the rotary cylinder to a driving shaft of the driving device so as to be rotated together with the rotary cylinder by the driving of the driving shaft; a condenser installed at the lower part of the machine body for condensing the vapor discharged from the decocting drum; a water supply pipe for supplying external water into the decocting cartridge; the discharge pipe is used for discharging the liquid medicine out of the inclined roller traditional Chinese medicine decocting machine; a heating plate installed at the lower part of the decoction barrel.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a rotary barrel component for a medicine decocting machine and the medicine decocting machine, which further optimize the decocting process on the basis of solving the decocting problems of more medicines and less water and avoid the blockage of subsequent pipelines by dregs of a decoction.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides a decocting machine is with rotatory bucket subassembly, includes rotatory bucket and sets up the filtration on rotatory bucket, filtration is used for carrying out the separation filtration to dregs of a decoction and liquid medicine in the rotatory bucket.

Further, the filtering structure comprises a supporting piece supported on the inner peripheral wall of the rotary barrel and a filtering piece coated on the periphery of the supporting piece.

Furthermore, be equipped with out the liquid hole on the bucket wall of rotatory bucket, filter and be in closely wrap up under support piece's the supporting role and apply on the internal perisporium of rotatory bucket, filter the liquid medicine that flows through out the liquid hole.

Further, support piece includes the support main part and sets up at the first location arch of support main part periphery, be provided with in the rotatory bucket with first location protruding location complex's first positioning groove, first location arch and first positioning groove are right in the circumferential direction filtration carries out spacing fixed.

Preferably, a plurality of first positioning blocks are arranged at intervals along the circumferential direction of the support member main body, and a plurality of first positioning grooves are arranged on the circumferential wall of the rotary tub in a one-to-one correspondence to the plurality of first positioning blocks.

Preferably, the supporting piece is a cylindrical supporting framework formed by weaving metal wires; or, the support piece is a cylindrical support framework which is made of plastic materials and is molded integrally in an injection mode.

Preferably, the inner side of the support member is provided with a plurality of ribs or blades extending toward the central axis of the rotary tub for stirring the medicine.

Preferably, the rotary tub is cylindrical, closed at the rear, and open at the front; the filtering piece is cylindrical filtering cloth wrapped on the inner peripheral wall of the rotary barrel.

The utility model provides a machine of decocting medicinal herbs has adopted foretell machine of decocting medicinal herbs rotary barrel subassembly, the machine of decocting medicinal herbs still includes: a body; the rotary barrel is rotatably arranged in the decoction barrel; the barrel cover component is hinged on the machine body corresponding to the opening of the decoction barrel; the driving device is arranged at the rear part of the decoction barrel and comprises a driving shaft, and the driving shaft is in driving connection with the rotary barrel and drives the rotary barrel to rotate.

Furthermore, the barrel cover component comprises a decoction barrel cover and a rotary disc which can be freely and rotatably connected to the decoction barrel cover, and the decoction barrel cover is hinged to a flange at the front end of the decoction barrel corresponding to the opening of the decoction barrel.

Furthermore, the barrel cover assembly further comprises a turntable bearing fixedly arranged on the decoction barrel cover and a turntable shaft rotatably arranged in the turntable bearing, the turntable shaft is fixedly connected with the turntable, the turntable covers the opening of the rotary barrel, and the rotary barrel drives the turntable to rotate.

Preferably, a second positioning protrusion is circumferentially arranged on the turntable, and a second positioning groove in positioning fit with the second positioning protrusion is arranged on the opening of the rotary barrel.

Preferably, a sealing ring is arranged between the decocting barrel cover and the flange.

Furthermore, the medicine decocting machine also comprises a heating plate which is arranged at the lower part of the medicine decocting barrel; the machine body further comprises a mounting bracket, and a shock absorber is arranged on the mounting bracket to enable the rotary barrel assembly to rotate stably.

Preferably, the shock absorber is a damping shock absorber; the damping shock absorbers are arranged outside the decoction barrel and on the mounting bracket.

Furthermore, the inclination angle of the axis of the decoction barrel relative to the horizontal plane is 5-45 degrees.

Furthermore, the upper part of the periphery of the decoction barrel close to the opening is also provided with a water inlet and an air outlet.

After adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. on the basis of matching with the design of the rotary barrel, the rotary barrel component can well carry out high-efficiency separation and filtration on decocted liquid medicine, and the liquid medicine flowing out of the liquid outlet hole has no medicine residue and can not be blocked by a pipeline; the medicine is directly decocted in the rotary barrel with the supporting piece and the filtering piece, and the noise is low.

2. The arrangement of the positioning bulge and the positioning groove in the rotary barrel component ensures that the supporting piece and the filtering piece are well fixed with the rotary barrel and rotate along with the rotary barrel; the rotary barrel component has the advantages of simple structure, low manufacturing cost and convenient disassembly and maintenance.

3. The medicines in the utility model do not need to be completely immersed in water, the medicines are rotationally stirred in the rotary barrel in the decocting process, the contradiction between the water adding amount and the medicine output amount is fundamentally solved, and the medicine residues and the liquid medicine are separated after the decoction is finished, so that the effective filtration is carried out on the basis of fully extracting the effective components in the medicines.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic perspective view of a rotary barrel assembly for a decocting machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a support member of the rotary tub assembly for the decocting machine in the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a support member of the rotary tub assembly for the decocting machine in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram and a partial sectional view of a drug-decocting machine according to an embodiment of the present invention;

FIG. 5 is a rear view of the drug-decocting machine in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a barrel cover assembly of the drug decocting machine in the embodiment of the utility model.

In the figure:

1. a body; 2. a damping shock absorber; 3. a drive shaft; 4. a medicine decocting barrel; 5. a rotating tub assembly; 6. the decocting barrel cover; 7. a turntable; 8. heating the plate; 9. a water inlet hole; 10. an air outlet;

401. a flange; 501. rotating the barrel; 502. a filter member; 503. a support member; 504. a rib or vane; 505. a first positioning projection; 506. a liquid outlet hole; 601. a seal ring; 701. a turntable shaft; 702. a turntable bearing;

5031. a first support ring; 5032. a second support ring; 5033. a cross member.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to examples.

Example one

As shown in fig. 1 to 3, a rotary barrel assembly 5 for a decocting machine comprises a rotary barrel 501 and a filtering structure arranged on the rotary barrel 501, wherein the filtering structure is used for separating and filtering herb residues and liquid medicine in the rotary barrel 501.

Specifically, the filtering structure comprises a supporting part 503 supported on the inner peripheral wall of the rotary tub 501 and a filtering part 502 coated on the outer periphery of the supporting part 503; the wall of the rotary barrel 501 is provided with a liquid outlet 506, the filter member 502 is tightly wrapped on the inner peripheral wall of the rotary barrel 501 under the supporting action of the supporting member 503, the liquid medicine before flowing through the liquid outlet 506 is thoroughly separated and filtered once, and the filtered liquid medicine flows out through the liquid outlet or flows to a subsequent pipeline.

The supporting member 503 comprises a supporting body and a first positioning protrusion 505 arranged on the periphery of the supporting body, a first positioning groove matched with the first positioning protrusion 505 in a positioning manner is arranged in the rotating barrel 501, and the first positioning protrusion 505 and the first positioning groove limit and fix the filtering structure in the circumferential direction; preferably, a plurality of first positioning blocks are arranged at intervals along the circumferential direction of the supporting member 503 main body, and a plurality of first positioning grooves are arranged on the circumferential wall of the rotary tub 501 in a one-to-one correspondence with the plurality of first positioning blocks. Of course, the positioning pins or some fastening fittings may be used, and are not limited herein.

The number of the first positioning blocks can be 2-10, and the number of the first positioning grooves can be 2-10; the first positioning block is arranged near the opening end of the supporting member 503; the first positioning groove is disposed near the open end of the rotary tub 501.

The supporting part 503 is a cylindrical supporting framework formed by weaving metal wires; alternatively, the supporting member 503 is a cylindrical supporting framework made of plastic material and formed by injection molding. It should be understood that the material of the supporting member 503 is not further limited, and the supporting member 503 may have a certain strength, corrosion resistance, and a material that does not react with the chemical solution or the drug, and is not limited herein.

As shown in fig. 3, the supporting member 503 is at least composed of a first supporting ring 5031, a second supporting ring 5032 and a plurality of cross beams 5033. A plurality of cross members 5033 are disposed on the first support ring 5031 and the second support ring 5032 at intervals to form an integral framework of the support member 503. Of course, the number of the support rings in the circumferential direction may be three or four to further enhance the firmness of the support 503, and the specific number is not limited.

The inner side of the supporting member 503 is provided with a plurality of ribs 504 or blades 504 extending toward the central axis of the rotary tub 501 for stirring the medicine. The rib 504 or the blade 504 is integrally formed with the support member 503 or detachably mounted on the support member 503; the rotary barrel 501 is cylindrical, the rear part is closed, and the front part is opened; the filter member 502 is a cylindrical filter cloth wrapped around the inner circumferential wall of the rotary tub 501. The number of fins 504 or vanes 504 may be 2-20.

In the prior art, medicines are directly placed in a closed medicine bag, and then the medicine bag is directly placed in the rotary barrel 501, so that the medicine bag is easily damaged in the medicine decocting process, medicine residues leak out, liquid outlet holes 506 in the side wall of the rotary barrel 501 have a good separation effect, but the filtering effect is limited, small medicine residues accumulated for a long time can block subsequent pipelines, or the body feeling of a patient who directly drinks liquid medicine containing more medicine residues is poor; the medicine bag generates a large noise during the rotation in the rotary tub 501. Based on this, the rotary barrel assembly 5 in this embodiment can perform efficient separation and filtration on the decocted medicine based on the design of the rotary barrel 501, and the liquid medicine flowing out of the liquid outlet 506 has no medicine residue and no pipeline blockage; the medicine is directly boiled in the rotary tub 501 having the support member 503 and the filter member 502, and noise is small.

The arrangement of the positioning protrusion and the positioning groove enables the supporting member 503 and the filtering member 502 to be well fixed with the rotary barrel 501 and rotate along with the rotary barrel; the rotary barrel component 5 has simple structure, low manufacturing cost and convenient disassembly and inclination,

example two

4-5, the decocting machine adopts a rotary barrel component 5 in the first embodiment, adopts an inclined roller decocting pot, and comprises a machine body 1 forming the appearance of the decocting machine; the decocting barrel 4 is cylindrical, the rear part of the decocting barrel 4 is closed, an opening is formed at the front part of the decocting barrel 4 to be used as a medicine inlet, the decocting barrel is obliquely arranged on the machine body 1, and the rotary barrel 501 is rotatably arranged in the decocting barrel 4; the barrel cover component is hinged on the machine body 1 corresponding to the opening of the decoction barrel 4; drive arrangement sets up in the rear portion of decocting medicinal herbs bucket 4, drive arrangement includes drive shaft 3, drive shaft 3 drive connection rotatory bucket 501, the drive rotatory bucket 501 rotates. The drive device further includes an electric motor, a power transmission device, wherein the power transmission device transmits the power of the electric motor to the drive shaft 3, wherein the power transmission device includes a pulley and a belt connecting the pulley.

The medicine decocting machine also comprises a heating plate 8 which is arranged at the lower part of the medicine decocting barrel 4 and is used as a decocting heat source; the machine body 1 further comprises a mounting bracket, and a shock absorber is arranged on the mounting bracket to enable the rotary barrel component 5 to rotate stably; preferably, the shock absorber is a damping shock absorber 2; the damping shock absorbers 2 are arranged outside the decoction barrel 4 and on the mounting bracket; the inclination angle of the axis of the decoction barrel 4 relative to the horizontal plane is 5-45 degrees, preferably 19-23 degrees; the upper part of the decoction barrel 4 close to the peripheral side of the opening is also provided with a water inlet 9 and an air outlet 10.

It should be noted that, on the basis of the existing decocting machine, the existing barrel cover is improved, specifically, as shown in fig. 6, the barrel cover assembly includes a decocting barrel cover 6 and a turntable 7 which is freely rotatably connected to the decocting barrel cover 6, the turntable 7 is used for preventing the medicine from moving to the outside of the rotary barrel 501, the decocting barrel cover 6 is hinged to the flange 401 at the front end of the decocting barrel 4 corresponding to the opening of the decocting barrel 4, and is used for opening or closing the inlet of the decocting barrel 4; the barrel cover assembly further comprises a turntable bearing 702 fixedly arranged on the decocting barrel cover 6 and a turntable shaft 701 rotatably arranged in the turntable bearing 702, the turntable shaft 701 is fixedly connected with the turntable 7, the turntable 7 covers the opening of the rotary barrel 501, and the rotary barrel 501 drives the turntable 7 to rotate. A second positioning protrusion is arranged on the circumferential direction of the turntable 7, and a second positioning groove matched with the second positioning protrusion in a positioning manner is arranged on an opening of the rotary barrel 501; preferably, a sealing ring 601 is arranged between the decocting barrel cover 6 and the flange 401.

In the decocting machine of the embodiment, the decocting cartridge is obliquely arranged in the machine body 1, so that compared with the decocting machine in the prior art, more traditional Chinese medicine decoction pieces can be soaked by using less water; because the improved damping shock absorber 2 is adopted in the decocting medicinal drum, the vibration generated in the operation process of the decocting medicinal drum can be reduced; another important improvement point of this embodiment is the improvement of bung subassembly, compares with current bung, and simple structure is clear and definite, convenient dismantlement and maintenance, and the leakproofness is better.

At present, the traditional Chinese medicine decoction pieces are required to be completely soaked and decocted in the decoction process of the traditional Chinese medicine decocting machine. In order to meet the dosage of patients, concentration is needed after decoction. If the water adding amount is required to be reduced when the concentration of the liquid medicine is increased, part of the traditional Chinese medicine decoction pieces cannot be decocted in water, and the drug effect is reduced. The utility model relates to a method for decocting Chinese herbal pieces without immersing them in water, which can meet the extraction effect. In general, the decocting machine is an inclined roller decocting machine, during the decocting process, the traditional Chinese medicine decoction pieces are continuously stirred in the rotary barrel 501 in a rotating mode, the contradiction between the water adding amount and the medicine discharging amount is fundamentally solved, the medicine is discharged centrifugally after the decocting is finished, and the medicine impurities and the medicine liquid are separated, so that the effective components in the traditional Chinese medicine decoction pieces are fully extracted.

EXAMPLE III

The utility model provides a machine of decocting medicinal herbs is with rotatory bucket subassembly 5, includes rotatory bucket 501 and sets up the filtration on rotatory bucket 501, filtration is used for separating the dregs of a decoction and the liquid medicine in rotatory bucket 501 and filters, be equipped with out liquid hole 506 on the bucket wall of rotatory bucket 501, this filtration can be for directly dressing filter piece 502 on the outer peripheral wall of rotatory bucket 501, and dregs of a decoction after through the first coarse filtration back of liquid hole 506, filter piece 502 again and filter and separate thinner dregs of a decoction and liquid medicine, and the liquid medicine of separation flows to follow-up pipeline through the play medicine mouth of the machine of decocting medicinal herbs.

Of course, the filtering structure may also be a filtering element 502 directly wrapped on the inner peripheral wall of the rotary barrel 501, and a device capable of clamping the filtering element 502 is disposed on the inner peripheral wall of the rotary barrel 501, so that the filtering element 502 is tightly wrapped on the inner peripheral wall of the rotary barrel 501 under the fixation of the clamping device, and the liquid medicine flowing through the liquid outlet hole 506 is filtered. It should be understood that the manner of tightly wrapping the filter member 502 on the inner peripheral wall of the rotary tub 501 is not limited to the clamping device, and any method capable of tightly wrapping the filter member 502 on the inner peripheral wall of the rotary tub 501 may be used, and is not limited herein.

The inner side of the rotary tub 501 is provided with a plurality of ribs 504 or blades 504 for stirring the medicine extending toward the central axis direction of the rotary tub 501, and the ribs 504 or blades 504 may be integrally formed with the rotary tub 501 or may be detachably mounted on the inner circumferential wall of the rotary tub 501.

The rotary barrel 501 is cylindrical, the rear part is closed, and the front part is opened; the filter member 502 is a filter cloth wrapped around the inner or outer circumferential wall of the rotary tub 501. It should be understood that the shape of the rotary tub 501 may not be limited to a cylindrical shape, but may also be an oval shape, a square shape, etc., and the specific shape needs to be designed in combination with the overall structure of the decocting machine, which is not limited herein.

Example four

Another medicine decocting machine, the medicine decocting machine adopts the rotary barrel component 5 in the third embodiment, and the medicine decocting machine also comprises a machine body 1; a cylindrical decocting barrel 4, wherein the rear part of the decocting barrel 4 is closed, the front part of the decocting barrel 4 is provided with an opening, the barrel is obliquely arranged on the machine body 1, and the rotary barrel 501 is rotatably arranged in the decocting barrel 4; the barrel cover component is hinged on the machine body 1 corresponding to the opening of the decoction barrel 4; drive arrangement sets up in the rear portion of decocting medicinal herbs bucket 4, drive arrangement includes drive shaft 3, drive shaft 3 drive connection rotatory bucket 501, the drive rotatory bucket 501 rotates. The heating plate 8 is arranged at the lower part of the decoction barrel 4; the machine body 1 further comprises a mounting bracket, and a shock absorber is arranged on the mounting bracket to enable the rotary barrel component 5 to rotate stably; preferably, the shock absorber is a damping shock absorber 2; the damping shock absorbers 2 are arranged outside the decoction barrel 4 and on the mounting bracket; the inclination angle of the axis of the decoction barrel 4 relative to the horizontal plane is 5-45 degrees; the upper part of the decoction barrel 4 close to the peripheral side of the opening is also provided with a water inlet 9 and an air outlet 10.

It should be noted that, on the basis of the existing decocting machine, the existing barrel cover is improved, specifically, as shown in fig. 6, the barrel cover assembly includes a decocting barrel cover 6 and a turntable 7 which is freely rotatably connected to the decocting barrel cover 6, and the decocting barrel cover 6 is hinged to a flange 401 at the front end of the decocting barrel 4 corresponding to the opening of the decocting barrel 4; the barrel cover assembly further comprises a turntable bearing 702 fixedly arranged on the decocting barrel cover 6 and a turntable shaft 701 rotatably arranged in the turntable bearing 702, the turntable shaft 701 is fixedly connected with the turntable 7, the turntable 7 covers the opening of the rotary barrel 501, and the rotary barrel 501 drives the turntable 7 to rotate. A second positioning protrusion is arranged on the circumferential direction of the turntable 7, and a second positioning groove matched with the second positioning protrusion in a positioning manner is arranged on an opening of the rotary barrel 501; preferably, a sealing ring 601 is arranged between the decocting barrel cover 6 and the flange 401.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A rotary barrel assembly for a decoction machine, comprising: the rotary barrel and the filtering structure are arranged on the rotary barrel, and the filtering structure is used for separating and filtering medicine dregs and liquid medicine in the rotary barrel;

the filtering structure comprises a supporting piece supported on the inner peripheral wall of the rotary barrel and a filtering piece coated on the periphery of the supporting piece;

the barrel wall of the rotary barrel is provided with a liquid outlet hole, the filter piece is tightly wrapped on the inner peripheral wall of the rotary barrel under the supporting action of the supporting piece, and the liquid medicine flowing through the liquid outlet hole is filtered.

2. The rotary tub assembly for a decocting machine of claim 1, wherein: the support piece comprises a support main body and a first positioning bulge arranged on the periphery of the support main body, a first positioning groove matched with the first positioning bulge in a positioning mode is arranged in the rotary barrel, and the first positioning bulge and the first positioning groove are used for limiting and fixing the filtering structure in the circumferential direction;

the rotary barrel comprises a support piece body, a plurality of first positioning blocks and a plurality of first positioning grooves, wherein the plurality of first positioning blocks are arranged at intervals along the circumferential direction of the support piece body, and the plurality of first positioning grooves are arranged on the circumferential wall of the rotary barrel in a one-to-one correspondence manner and correspond to the plurality of first positioning blocks.

3. The rotary tub assembly for a decocting machine of claim 1, wherein: the supporting piece is a cylindrical supporting framework formed by weaving metal wires; or, the support piece is a cylindrical support framework which is made of plastic materials and is molded integrally in an injection mode.

4. The rotary tub assembly for a decocting machine of claim 1, wherein: the inner side of the supporting piece is provided with a plurality of ribs or blades which extend towards the central axis direction of the rotary barrel and are used for stirring the medicines.

5. The rotary tub assembly for a decocting machine of claim 1, wherein: the rotary barrel is cylindrical, the rear part of the rotary barrel is closed, and the front part of the rotary barrel is opened; the filtering piece is cylindrical filtering cloth wrapped on the inner peripheral wall of the rotary barrel.

6. A machine for decocting medicinal herbs, wherein a rotary barrel assembly for decocting medicinal herbs according to any one of claims 1 to 5 is employed, the machine further comprising: a body;

the rotary barrel is rotatably arranged in the decoction barrel;

the barrel cover component is hinged on the machine body corresponding to the opening of the decoction barrel;

the driving device is arranged at the rear part of the decoction barrel and comprises a driving shaft, and the driving shaft is in driving connection with the rotary barrel and drives the rotary barrel to rotate.

7. The machine of claim 6, wherein: the barrel cover component comprises a decoction barrel cover and a rotary disc which can be freely and rotatably connected to the decoction barrel cover, and the decoction barrel cover is hinged to a flange at the front end of the decoction barrel corresponding to the opening of the decoction barrel;

the barrel cover assembly further comprises a turntable bearing fixedly arranged on the decoction barrel cover and a turntable shaft rotatably arranged in the turntable bearing, the turntable shaft is fixedly connected with the turntable, the turntable covers the opening of the rotary barrel, and the rotary barrel drives the turntable to rotate.

8. The machine of claim 7, wherein: a second positioning bulge is arranged on the circumferential direction of the rotary table, and a second positioning groove matched with the second positioning bulge in a positioning way is arranged on an opening of the rotary barrel;

wherein a sealing ring is arranged between the decocting barrel cover and the flange.

9. The machine according to any of the claims from 6 to 8, characterized in that: the medicine decocting machine also comprises a heating plate which is arranged at the lower part of the medicine decocting barrel; the machine body also comprises a mounting bracket, and a shock absorber is arranged on the mounting bracket to enable the rotary barrel assembly to rotate stably;

wherein the shock absorber is a damping shock absorber; the damping shock absorbers are arranged outside the decoction barrel and on the mounting bracket;

the inclination angle of the axis of the decoction barrel relative to the horizontal plane is 5-45 degrees; the upper part of the side of the decoction barrel close to the opening is also provided with a water inlet and an air outlet.