CN110371598B - Traditional Chinese medicine conveying method - Google Patents
Traditional Chinese medicine conveying method Download PDFInfo
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- CN110371598B CN110371598B CN201910687273.0A CN201910687273A CN110371598B CN 110371598 B CN110371598 B CN 110371598B CN 201910687273 A CN201910687273 A CN 201910687273A CN 110371598 B CN110371598 B CN 110371598B
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- chinese medicine
- rotor
- traditional chinese
- diameter
- weight
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
- B65G33/265—Screws with a continuous helical surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0208—Control or detection relating to the transported articles
- B65G2203/0258—Weight of the article
Abstract
The invention provides a traditional Chinese medicine conveying method which comprises a conveyor and a control system, wherein the conveyor comprises a hopper, a feeding hole, a shell, a stator, a rotor and a discharging hole, rotating blades are arranged on the rotor, the control system controls the rotor to rotate, and accurate calculation is carried out through a plurality of formulas to obtain the number of turns of the rotor needing to be measured, so that the condition that the measurement is inaccurate in the prior art is avoided, and the measurement is more accurate through the calculation method provided by the invention.
Description
Technical Field
The invention belongs to the field of traditional Chinese medicines, and relates to a traditional Chinese medicine conveying method.
Background
In the current medical field, especially the traditional Chinese medicine field, the weight of the traditional Chinese medicine needs to be accurately obtained, at present, the electronic scale and manual operation are mainly adopted, the process is complex, the payment is more, the effect is not good, the inaccurate weighing is caused by the fact that the traditional Chinese medicine falls on the electronic scale freely in the conveying process, and part of materials do not fall when the control equipment stops, so that the finally obtained value is not required, the operation of personnel is not slightly influenced, and the accuracy is also influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a traditional Chinese medicine conveying method, which can accurately obtain the quantity of the desired traditional Chinese medicines only by rotating the number of turns of a rotor by accurately calculating the volume of the rotor in unit volume, then accurately calculating by a formula according to the required weight and setting an adjusting coefficient according to the volume of the unit individual of the traditional Chinese medicines, thereby solving the problems mentioned in the background technology.
The specific technical scheme of the invention is as follows:
the invention provides a traditional Chinese medicine conveying method, which comprises a conveyor and a control system, wherein the conveyor comprises a hopper, a feeding hole, a shell, a stator, a rotor and a discharging hole, the rotor is provided with rotating blades, and the control system controls the rotation of the rotor, and the specific steps are as follows:
in the first step, the capacity of one rotation of the rotor is determined and obtained by the following formula:
in the above formula, V-the capacity of one revolution of the rotor;
f-area in the rotor longitudinal space;
l-the length of the rotating blade after deployment;
s-lead;
h-rotating blade height;
d-the rotor pitch diameter, i.e. the diameter of the shaft diameter plus the height h of the rotating blades;
secondly, determining the volume and density of the traditional Chinese medicine to be delivered, and further obtaining the weight of a single individual, wherein the weight is obtained through the following formula:
in the above formula, the first and second carbon atoms are,
-weight of individual traditional Chinese medicine;
rho-density of the Chinese medicine;
thirdly, calculating the number of turns of the rotor according to the materials with required weight, and obtaining the number of turns of the rotor through the following formula:
in the above formula, N-the number of turns required to be rotated;
k-adjustment factor;
m-weight of the required Chinese medicine;
fourthly, controlling the rotor to rotate through the control system according to the calculated number of turns of the rotor to obtain the required traditional Chinese medicine. The required quantity of the traditional Chinese medicines can be accurately obtained through the steps, and the inaccurate condition is avoided.
Preferably, the traditional Chinese medicine is hard and spherical-like.
Preferably, the adjustment coefficient k is a value greater than 1, specifically: the diameter is less than or equal to 3 mm, and k is 1.05; the diameter is less than or equal to 5 mm and greater than 3 mm, and k is 1.08; the diameter is less than or equal to 10 mm and greater than 5 mm, and k is 1.15; the diameter is less than or equal to 20 mm and more than 10 mm, and k is 1.30.
Preferably, the number of turns of the rotor is calculated by inputting the required weight and parameters of the individual into the control system, and then the control system controls the operation of the apparatus by the calculated result.
Preferably, the traditional Chinese medicine conveying method is applied to filling of traditional Chinese medicine.
Borrow by above technical scheme, the beneficial effect of this application lies in:
1. the traditional subsequent weighing method is abandoned, the traditional Chinese medicine is directly metered in the whole conveying process through accurate calculation, the method of using an electronic scale is omitted, the metering process is more accurate, and the method is completely different from the existing metering process after transportation is finished, and a brand new metering method is provided.
2. Due to the fact that the sizes of the traditional Chinese medicine individuals are different, and certain gaps exist among the individuals, the adjusting coefficients are creatively introduced, the coefficients under different individual volumes are obtained through tests, and the metering process is more accurate through the addition of the coefficients.
3. The invention can be applied to the production line for filling traditional Chinese medicines, so that the filling of the medicines is more automatic.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for assisting the understanding of the present application, and are not particularly limited to the shapes, the proportional sizes, and the like of the respective members in the present application. Those skilled in the art, guided by the present application, can select various possible shapes and proportional sizes to implement the present application according to specific situations. In the drawings:
FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;
FIG. 2 is a schematic view of a rotor of the present application;
FIG. 3 is a schematic view of a rotating blade.
1. A feed inlet; 2. a housing; 3. a rotor; 4. a discharge port; 5. the blades are rotated.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-3, the present invention provides a method for transporting traditional Chinese medicine, which comprises a conveyor and a control system, wherein the conveyor comprises a funnel (not shown in the figure), a feed inlet 1, a housing 2, a stator (not shown in the figure), a rotor 3 and a discharge outlet 4, the funnel is fixedly connected with the feed inlet 1, the stator is arranged between the rotor 3 and the housing 2, the stator is made of rubber material, on one hand, the housing is prevented from being damaged, on the other hand, the rotor is also prevented from being crushed in the traditional Chinese medicine transporting process, a rotating blade 5 is arranged on the rotor 3, the control system (not shown in the figure) controls the rotation of the rotor, and the traditional Chinese medicine is transported by the rotation of the rotating blade. The method comprises the following specific steps:
in a first step, the capacity of one revolution of the rotor 3 is determined, obtained by the following formula:
in the above formula, V-the capacity of one revolution of the rotor;
f-area in the rotor longitudinal space;
l-the length of the rotating blade after deployment;
s-lead;
h-rotating blade height;
d-the rotor pitch diameter, i.e. the diameter of the shaft diameter plus the height h of the rotating blades;
aiming at different traditional Chinese medicines to be conveyed, different conveyors can be selected, and after the conveyors are replaced, calculation can be carried out through the formula to obtain a new traditional Chinese medicine conveying model, so that the conveying method can be applied to various conveyors.
Secondly, determining the volume and density of the traditional Chinese medicine to be delivered, and further obtaining the weight of a single individual, wherein the weight is obtained through the following formula:
in the above formula, the first and second carbon atoms are,
-weight of individual traditional Chinese medicine;
rho-density of the Chinese medicine;
from the calculated weight of the single individual, the number of turns of the following rotor 3 can be determined.
Thirdly, calculating the number of turns of the rotor 3 according to the required weight of the material, and obtaining the rotation number through the following formula:
in the above formula, N-the number of turns required to be rotated;
k-adjustment factor;
m-weight of the required Chinese medicine;
the adjustment coefficient is that the adjustment coefficient is added in the formula (3) because the existing medicine has intervals in the process of conveying and can influence the weighed weight, the size of the adjustment coefficient can be determined according to the diameter of the traditional Chinese medicine, and the specific adjustment coefficient k is a numerical value greater than 1, and specifically comprises the following steps: the diameter is less than or equal to 3 mm, and k is 1.05; the diameter is less than or equal to 5 mm and greater than 3 mm, and k is 1.08; the diameter is less than or equal to 10 mm and greater than 5 mm, and k is 1.15; the diameter is less than or equal to 20 mm and more than 10 mm, and k is 1.30. The determination of the numerical value of the adjustment coefficient is obtained by a plurality of tests according to the distribution of the sizes of the traditional Chinese medicines, so that the metering process is more accurate.
Fourthly, controlling the rotor 3 to rotate through the control system according to the calculated number of turns of the rotor 3 to obtain the required traditional Chinese medicine. The required quantity of the traditional Chinese medicines can be accurately obtained through the steps, and the inaccurate condition is avoided.
Preferably, the traditional Chinese medicine is hard and spherical-like.
Preferably, the number of turns of the rotor 3 is calculated by inputting the required weight and the parameters of the individual into the control system, which then controls the operation of the apparatus by the calculated results.
Preferably, the traditional Chinese medicine conveying method is applied to filling of traditional Chinese medicine.
It should be noted that the rotor, stator, control system, etc. provided in this embodiment may be any suitable conventional configuration. For clearly and briefly explaining the technical solution provided by the present embodiment, the above parts will not be described again, and the drawings in the specification are also simplified accordingly. It should be understood, however, that the present embodiments are not limited in scope thereby.
Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (5)
1. The utility model provides a traditional chinese medicine conveying method, includes conveyer and control system, the conveyer includes funnel, feed inlet, shell, stator, rotor and discharge gate, be provided with rotating vane on the rotor, the rotation of control system control rotor, its characterized in that:
in the first step, the capacity of one rotation of the rotor is determined and obtained by the following formula:
in the above formula, V-the capacity of one revolution of the rotor;
f-area in the rotor longitudinal space;
l-the length of the rotating blade after deployment;
s-lead;
h-rotating blade height;
d-the rotor pitch diameter, i.e. the diameter of the shaft diameter plus the height h of the rotating blades;
secondly, determining the volume and density of the traditional Chinese medicine to be delivered, and further obtaining the weight of a single individual, wherein the weight is obtained through the following formula:
in the above formula, the first and second carbon atoms are,
-weight of individual traditional Chinese medicine;
rho-density of the Chinese medicine;
thirdly, calculating the number of turns of the rotor according to the materials with required weight, and obtaining the number of turns of the rotor through the following formula:
in the above formula, N-the number of turns required to be rotated;
k-adjustment factor;
m-weight of the required Chinese medicine;
fourthly, controlling the rotor to rotate through the control system according to the calculated number of turns of the rotor to obtain the required traditional Chinese medicine.
2. The method for delivering a chinese medicine according to claim 1, wherein: the Chinese medicine is hard and spherical.
3. The method for delivering a chinese medicine according to claim 1, wherein: the adjustment coefficient k is a value greater than 1, and specifically includes: the diameter is less than or equal to 3 mm, and k is 1.05; the diameter is less than or equal to 5 mm and greater than 3 mm, and k is 1.08; the diameter is less than or equal to 10 mm and greater than 5 mm, and k is 1.15; the diameter is less than or equal to 20 mm and more than 10 mm, and k is 1.30.
4. The method for delivering a chinese medicine according to claim 1, wherein: the number of turns of the rotor is calculated by inputting the required weight and the parameters of the single body into the control system, and then the control system controls the equipment to operate according to the calculated result.
5. The method for delivering a chinese medicine according to claim 1, wherein: the traditional Chinese medicine conveying method is applied to filling of traditional Chinese medicine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687273.0A CN110371598B (en) | 2019-07-29 | 2019-07-29 | Traditional Chinese medicine conveying method |
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|---|---|---|---|
| CN201910687273.0A CN110371598B (en) | 2019-07-29 | 2019-07-29 | Traditional Chinese medicine conveying method |
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| CN110371598A CN110371598A (en) | 2019-10-25 |
| CN110371598B true CN110371598B (en) | 2020-09-04 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645065A (en) * | 1984-08-11 | 1987-02-24 | Hitachi Zosen Corporation | Apparatus for feeding waste tire chips |
| CN88102024A (en) * | 1987-03-10 | 1988-12-07 | 雷恩自动机株式会社 | The method and apparatus of quantitatively delivering food material |
| JPH09142635A (en) * | 1995-11-24 | 1997-06-03 | Fujiwara Techno Art:Kk | Screw conveyer in boiler |
| CN201647591U (en) * | 2010-03-27 | 2010-11-24 | 王成东 | Spiral progressive traditional Chinese medicine extraction feeding mechanism |
| CN102359394A (en) * | 2011-08-30 | 2012-02-22 | 中国瑞林工程技术有限公司 | Method for determining production capacity of filler slurry mixing equipment |
| CN202379430U (en) * | 2011-12-07 | 2012-08-15 | 江苏大学 | Screw discontinuous quantitative feeding system based on intelligent Agent |
| CN103171877A (en) * | 2013-02-18 | 2013-06-26 | 天津市国达测控技术有限公司 | Double helix differential definite quantity conveyer system and control method thereof |
| CN203728078U (en) * | 2013-12-23 | 2014-07-23 | 汝州市金龟科技发展有限公司 | Traditional Chinese medicine composition pulverizing and stirring conveying equipment |
| KR20150005271A (en) * | 2013-07-05 | 2015-01-14 | 계문애 | Transfer Device Of Pill |
| CN105501856A (en) * | 2015-12-11 | 2016-04-20 | 江苏大学 | Powder filling rate detecting device and method of separation device of spiral quantitative charger |
| CN106227251A (en) * | 2016-08-30 | 2016-12-14 | 河南华东工控技术有限公司 | Intelligent dosing system |
| KR20180115042A (en) * | 2017-04-12 | 2018-10-22 | 주식회사 링콘테크놀로지 | Sand input system |
| CN109781052A (en) * | 2019-01-28 | 2019-05-21 | 五邑大学 | A kind of shield screw conveyor dregs stream angled conveyor measuring device |
-
2019
- 2019-07-29 CN CN201910687273.0A patent/CN110371598B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645065A (en) * | 1984-08-11 | 1987-02-24 | Hitachi Zosen Corporation | Apparatus for feeding waste tire chips |
| CN88102024A (en) * | 1987-03-10 | 1988-12-07 | 雷恩自动机株式会社 | The method and apparatus of quantitatively delivering food material |
| JPH09142635A (en) * | 1995-11-24 | 1997-06-03 | Fujiwara Techno Art:Kk | Screw conveyer in boiler |
| CN201647591U (en) * | 2010-03-27 | 2010-11-24 | 王成东 | Spiral progressive traditional Chinese medicine extraction feeding mechanism |
| CN102359394A (en) * | 2011-08-30 | 2012-02-22 | 中国瑞林工程技术有限公司 | Method for determining production capacity of filler slurry mixing equipment |
| CN202379430U (en) * | 2011-12-07 | 2012-08-15 | 江苏大学 | Screw discontinuous quantitative feeding system based on intelligent Agent |
| CN103171877A (en) * | 2013-02-18 | 2013-06-26 | 天津市国达测控技术有限公司 | Double helix differential definite quantity conveyer system and control method thereof |
| KR20150005271A (en) * | 2013-07-05 | 2015-01-14 | 계문애 | Transfer Device Of Pill |
| CN203728078U (en) * | 2013-12-23 | 2014-07-23 | 汝州市金龟科技发展有限公司 | Traditional Chinese medicine composition pulverizing and stirring conveying equipment |
| CN105501856A (en) * | 2015-12-11 | 2016-04-20 | 江苏大学 | Powder filling rate detecting device and method of separation device of spiral quantitative charger |
| CN106227251A (en) * | 2016-08-30 | 2016-12-14 | 河南华东工控技术有限公司 | Intelligent dosing system |
| KR20180115042A (en) * | 2017-04-12 | 2018-10-22 | 주식회사 링콘테크놀로지 | Sand input system |
| CN109781052A (en) * | 2019-01-28 | 2019-05-21 | 五邑大学 | A kind of shield screw conveyor dregs stream angled conveyor measuring device |
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