阅读说明：本技术 一种中药饮片高效烘干设备 (High-efficient drying equipment of herbal pieces- ) 是由 郑秀文 刘书彬 李继武 于 2020-04-21 设计创作，主要内容包括：本发明涉及中药饮片加工技术领域,具体涉及一种中药饮片高效烘干设备,包括包括烘干箱、步进送料机构、热风机和PLC控制器,所述烘干箱的下表面设置有支脚,所述PLC控制器设置在烘干箱的外侧面,所述烘干箱的左右两侧面开设有矩形口,所述步进送料机构包括传送机架、传送带和步进电机,所述传送机架贯穿左右两个矩形口设置；本发明通过步进电机控制传送带步进式输送,先在烘干箱内部左端进行一次烘干,然后通过扇形翻料斗的作用将铺设在传送带上的中药饮片翻动,经过中药饮片翻转机构的作用能够将传送带上的中药饮片进行上下层颠覆翻转,翻转后再摊在传送带上,随着传送带的运输进入烘干箱的右端进行二次烘干,其烘干效率高、烘干效果优异。(The invention relates to the technical field of processing of traditional Chinese medicine decoction pieces, in particular to high-efficiency drying equipment for traditional Chinese medicine decoction pieces, which comprises a drying box, a stepping feeding mechanism, an air heater and a PLC (programmable logic controller), wherein support legs are arranged on the lower surface of the drying box; the step-by-step conveying of the conveying belt is controlled by the step motor, the left end in the drying box is firstly dried, then the traditional Chinese medicine decoction pieces laid on the conveying belt are turned under the action of the fan-shaped turning hopper, the traditional Chinese medicine decoction pieces on the conveying belt can be turned upside down and upside down under the action of the traditional Chinese medicine decoction piece turning mechanism, the traditional Chinese medicine decoction pieces are spread on the conveying belt after being turned, and the traditional Chinese medicine decoction pieces enter the right end of the drying box along with the conveying of the conveying belt to be dried for the second time, so that the drying efficiency is.)

1. A high-efficient drying equipment of herbal pieces-for-chinese medicine, including stoving case, step-by-step feeding mechanism, air heater and PLC controller, its characterized in that, the lower surface of stoving case is provided with the stabilizer blade, the PLC controller sets up the lateral surface at the stoving case, the rectangle mouth has been seted up to the left and right sides face of stoving case, step-by-step feeding mechanism includes conveying frame, conveyer belt and step motor, the conveying frame runs through two rectangle mouths of left and right sides and sets up, the conveyer belt sets up in the conveying frame, be provided with the speed reducer on the output shaft of step motor, the output shaft of speed reducer is connected with the drive roll on the conveying frame, the surface of conveyer belt evenly has seted up a plurality of bleeder vents, two air heaters are fixed to be set up in the left and right sides both ends of stoving case upper surface, be connected with the hot-air calandri, the end part of a hot air exhaust pipe positioned in the drying box is connected with a uniformly distributed exhaust pipe, the lower surface of the uniformly distributed exhaust pipe is provided with an air outlet facing a conveyor belt, the bottom wall of the drying box positioned right below the uniformly distributed exhaust pipe is provided with a plurality of air outlet holes, and a traditional Chinese medicine decoction piece overturning mechanism is arranged in the drying box positioned between the left hot air blower and the right hot air blower;

wherein, the turnover mechanism of the traditional Chinese medicine decoction pieces comprises a fan-shaped turning hopper, the front end and the rear end of the fan-shaped turning hopper are connected with a rotating shaft, the front end and the rear end of the fan-shaped turning hopper below the rotating shaft are both connected with a blocking rod, the inner wall of the lower end of the fan-shaped turning hopper is provided with an arc-shaped turning plate, the front inner wall and the rear inner wall of the drying box are both provided with two fixed blocks, the two fixed blocks are symmetrically arranged by rotating 180 degrees around the rotating shaft, the fixed blocks are connected with springs, the end parts of the springs are connected with stop blocks which are positioned on the same circular line with the blocking rods, the rotating shaft is rotatably connected with the rear side wall of the drying box at the rear end, the front side surface of the drying box at the rotating shaft at the front end is connected with a cylinder, a rotating cavity is arranged inside the cylinder, the front inner, the outer ends of the fan blades are attached to the inner wall of the rotating cavity, the rear end of the rotating rod penetrates through the cylinder to be connected with the rotating shaft through the outer wall of the drying box, a piston cylinder is fixed at the left end of the front side surface of the drying box, a hydraulic cylinder is arranged at the front side surface of the drying box at the left end of the piston cylinder, a sealing piston is arranged in the piston cylinder, a piston rod of the hydraulic cylinder is connected with the sealing piston, the right end of the piston cylinder is connected with a first compressed air pipe, the right end of the first compressed air pipe is connected with the upper end of the outer circumferential surface on the left side of the cylinder, the upper end of the outer circumference surface at the right side of the cylinder is connected with a second compressed air pipe, the end part of the second compressed air pipe extends into the drying box, the end part of a second compressed air pipe extending into the drying box passes through the conveying rack and is arranged between the conveying belts, and the end part of the second compressed air pipe is arranged in a sealing way, and the lower surface of the second compressed air pipe is provided with a compressed air exhaust hole which is just opposite to the conveying belt.

2. The efficient drying equipment for the Chinese herbal pieces according to claim 1, wherein an even blanking device is arranged above the left end of the stepping feeding mechanism, the even blanking device comprises a hopper, a rotary drum and a driving motor, a material homogenizing chamber is arranged inside the rotary drum, the lower end of the hopper is communicated with the upper end of the material homogenizing chamber, a blanking port is arranged right below the rotary drum, the driving motor is fixed on the end surface of the rotary drum, a round rod is connected to the end of an output shaft of the driving motor extending into the material homogenizing chamber, and a plurality of material stirring plates are uniformly arranged on the outer circumferential surface of the round rod.

3. The apparatus for drying herbal pieces-of-chinese-medicinal material according to claim 1, wherein said uniform distribution exhaust duct comprises a main air duct and a branch air duct, said main air duct is connected to a hot air duct, a plurality of said branch air ducts are uniformly connected to the front and rear side surfaces of the main air duct, and said air outlet is provided on the lower surface of the branch air duct.

4. The efficient drying equipment for the Chinese herbal pieces, according to claim 1, is characterized in that a material shoveling inclined plane is arranged at the bottom end of the inner wall of the fan-shaped turning hopper.

5. The efficient drying equipment for traditional Chinese medicine decoction pieces according to claim 1, wherein the upper end of the arc-shaped material turning plate is connected with a wedge-shaped strip protruding outwards.

6. The efficient drying equipment for traditional Chinese medicine decoction pieces according to claim 1, wherein the sector angle of the section of the sector material turnover hopper is 120-180 degrees.

7. The efficient drying equipment for the Chinese herbal pieces according to claim 1, wherein a transition guide groove is formed in the side surface of the stop block, which is abutted to the stop lever.

Technical Field

The invention relates to the technical field of processing of traditional Chinese medicine decoction pieces, in particular to high-efficiency drying equipment for the traditional Chinese medicine decoction pieces.

Background

The traditional Chinese medicine decoction pieces are prepared from traditional Chinese medicines according to the traditional Chinese medicine theory and the traditional Chinese medicine preparation method, and can be directly used as traditional Chinese medicines in traditional Chinese medicine clinical practice. During the processing of the traditional Chinese medicine decoction pieces, the traditional Chinese medicine decoction pieces are firstly sliced, then are put into cleaning equipment for cleaning and impurity removal, and finally are put into drying equipment for drying. At present, a drying device used in the processing process of traditional Chinese medicine decoction pieces is a small-sized drying oven, when the traditional Chinese medicine decoction pieces are dried, an operator lays the drying device in a drying screen frame, then puts the drying screen frame into the drying oven to be dried by hot air, and after the drying is finished, opens a box door, cools the drying screen frame and takes out the drying screen frame from the drying oven, so that the drying efficiency is low.

The utility model with the patent number of CN207365655U discloses a dryer for traditional Chinese medicine preparation, which comprises a feed inlet, a blanking buffer plate, a steam collecting pipe, a communicating pipe, a steam collecting cover, a steam rising port, a steam collecting chamber, a condensing device, a condensation water outlet pipe, a condensed water collecting box, a water outlet, a material taking port, a material storage chamber, a material discharge port, a driven pulley, a driving pulley, a motor belt, a motor, a driving gear, a microwave radiation drier, a conveying belt, a drying chamber, bottom feet, a pulley supporting seat and a second driven pulley; although the dryer realizes streamlined drying of traditional Chinese medicines through the conveying belt, the drying efficiency is high in theory, in the actual drying process of the traditional Chinese medicine decoction pieces, the conveying belt blocks hot air flow from contacting with the traditional Chinese medicines, so that the drying effect is poor; in addition, in the process of conveying the traditional Chinese medicine by using the conveying belt, the traditional Chinese medicine decoction pieces are directly paved on the conveying belt, and the traditional Chinese medicine decoction pieces on the conveying belt cannot be turned over after entering the drying chamber, so that the drying effect of the traditional Chinese medicine decoction pieces on the upper surface is better, and the traditional Chinese medicine decoction pieces on the inner layer which are directly contacted with the conveying belt cannot be effectively dried. Therefore, aiming at the defects of the traditional Chinese medicine decoction piece dryer, the design of the high-efficiency drying equipment for the Chinese medicine decoction pieces, which can effectively solve the problems, is a technical problem to be solved.

Disclosure of Invention

The invention aims to overcome the defect that the traditional Chinese medicine decoction pieces on a conveying belt cannot be turned over after the traditional Chinese medicine decoction piece dryer enters a drying chamber, and the traditional Chinese medicine decoction pieces are dried unevenly on the upper and lower sides, and designs a high-efficiency drying device capable of turning the traditional Chinese medicine decoction pieces on the conveying belt.

The invention is realized by the following technical scheme:

a high-efficient drying equipment of herbal pieces-for-chinese medicine, including stoving case, step-by-step feeding mechanism, air heater and PLC controller, the lower surface of stoving case is provided with the stabilizer blade, the PLC controller sets up the lateral surface at the stoving case, the rectangle mouth has been seted up to the left and right sides face of stoving case, step-by-step feeding mechanism includes conveying frame, conveyer belt and step motor, the conveying frame runs through two rectangle mouths and sets up about, the conveyer belt sets up in the conveying frame, be provided with the speed reducer on the output shaft of step motor, the output shaft of speed reducer is connected with the drive roll on the conveying frame, the surface of conveyer belt evenly has seted up a plurality of bleeder vents, two the air heater is fixed to be set up at the left and right sides both ends of stoving case upper surface, be connected with the hot-air calandria, the lower, the end part of a hot air exhaust pipe positioned in the drying box is connected with a uniformly distributed exhaust pipe, the lower surface of the uniformly distributed exhaust pipe is provided with an air outlet facing a conveyor belt, the bottom wall of the drying box positioned right below the uniformly distributed exhaust pipe is provided with a plurality of air outlet holes, and a traditional Chinese medicine decoction piece overturning mechanism is arranged in the drying box positioned between the left hot air blower and the right hot air blower;

wherein, the turnover mechanism of the traditional Chinese medicine decoction pieces comprises a fan-shaped turning hopper, the front end and the rear end of the fan-shaped turning hopper are connected with a rotating shaft, the front end and the rear end of the fan-shaped turning hopper below the rotating shaft are both connected with a blocking rod, the inner wall of the lower end of the fan-shaped turning hopper is provided with an arc-shaped turning plate, the front inner wall and the rear inner wall of the drying box are both provided with two fixed blocks, the two fixed blocks are symmetrically arranged by rotating 180 degrees around the rotating shaft, the fixed blocks are connected with springs, the end parts of the springs are connected with stop blocks which are positioned on the same circular line with the blocking rods, the rotating shaft is rotatably connected with the rear side wall of the drying box at the rear end, the front side surface of the drying box at the rotating shaft at the front end is connected with a cylinder, a rotating cavity is arranged inside the cylinder, the front inner, the outer ends of the fan blades are attached to the inner wall of the rotating cavity, the rear end of the rotating rod penetrates through the cylinder to be connected with the rotating shaft through the outer wall of the drying box, a piston cylinder is fixed at the left end of the front side surface of the drying box, a hydraulic cylinder is arranged at the front side surface of the drying box at the left end of the piston cylinder, a sealing piston is arranged in the piston cylinder, a piston rod of the hydraulic cylinder is connected with the sealing piston, the right end of the piston cylinder is connected with a first compressed air pipe, the right end of the first compressed air pipe is connected with the upper end of the outer circumferential surface on the left side of the cylinder, the upper end of the outer circumference surface at the right side of the cylinder is connected with a second compressed air pipe, the end part of the second compressed air pipe extends into the drying box, the end part of a second compressed air pipe extending into the drying box passes through the conveying rack and is arranged between the conveying belts, and the end part of the second compressed air pipe is arranged in a sealing way, and the lower surface of the second compressed air pipe is provided with a compressed air exhaust hole which is just opposite to the conveying belt.

As a further improvement of the above scheme, a uniform blanking device is arranged above the left end of the stepping feeding mechanism, the uniform blanking device comprises a hopper, a rotary drum and a driving motor, a material homogenizing chamber is arranged inside the rotary drum, the lower end of the hopper is communicated with the upper end of the material homogenizing chamber, a blanking port is arranged right below the rotary drum, the driving motor is fixed on the end surface of the rotary drum, the end part of an output shaft of the driving motor, which extends into the material homogenizing chamber, is connected with a round rod, and a plurality of material stirring plates are uniformly arranged on the outer circumferential surface of the round rod; the driving motor and the stepping motor synchronously rotate, and when the stepping motor drives the conveying belt to transport, the driving motor drives the material shifting plate to rotate, so that the traditional Chinese medicine decoction pieces in the hopper are uniformly discharged onto the conveying belt.

As a further improvement of the above scheme, the uniformly distributed exhaust pipes comprise a main air pipe and branch air pipes, the main air pipe is connected with the hot air exhaust pipe, the branch air pipes are uniformly connected to the front side surface and the rear side surface of the main air pipe, and the air outlets are arranged on the lower surfaces of the branch air pipes; with the equipartition blast pipe through above-mentioned setting, can carry out comprehensive hot air drying to the herbal pieces-of getting into stoving incasement portion.

As a further improvement of the scheme, the bottom end of the inner wall of the fan-shaped turning hopper is provided with a shoveling inclined plane; the shoveling inclined plane is close to the surface of the conveying belt, and when the stepping motor drives the conveying belt to convey for a certain distance, the medicine decoction pieces can smoothly enter the fan-shaped turning hopper through the shoveling inclined plane.

As a further improvement of the above scheme, the upper end of the arc-shaped material turning plate is connected with a wedge-shaped strip protruding outwards; the wedge-shaped strips are arranged in a protruding mode, so that the outer-layer Chinese herbal pieces in the fan-shaped turning hopper fall off firstly and then the inner-layer Chinese herbal pieces fall off in the turning process of the fan-shaped turning hopper, and therefore the turning of the Chinese herbal pieces at the front end of the conveying belt is achieved.

As a further improvement of the scheme, the sector angle of the section of the sector material turning hopper is 120-180 degrees; the fan-shaped turning hopper with the fan-shaped angle of 120-180 degrees can ensure that the traditional Chinese medicine decoction pieces falling from the arc-shaped turning plate are firstly stacked on the fan-shaped turning hopper at the bottom end, and the traditional Chinese medicine decoction pieces slide on the conveying belt after being turned upside down.

As a further improvement of the above scheme, a transition guide groove is formed on the side surface of the stop block abutting against the stop lever; the transition guide groove can ensure that the stop lever and the stop block are smoother when the stop lever and the stop block are abutted and limited.

The working principle of the device is as follows:

the control program is set through the PLC firstly, the stepping motor and the hydraulic cylinder are automatically controlled, the Chinese herbal pieces are laid on the upper surface of the left end of the conveyor belt, the Chinese herbal pieces laid on the conveyor belt are conveyed into the drying box for a certain distance along with the stepping motor every time, the Chinese herbal pieces are dried by hot air exhausted from the left-end uniformly-distributed exhaust pipe in the drying box firstly, the Chinese herbal pieces on the upper surface are effectively dried in the drying process, and the drying effect of the Chinese herbal pieces on the lower surface is insufficient.

Then the stepping motor drives the conveyor belt to move for a certain distance, the traditional Chinese medicine decoction pieces close to the left side of the fan-shaped stirring hopper are pushed into the fan-shaped stirring hopper, the hydraulic cylinder is started at the moment, the piston rod of the hydraulic cylinder extends to push the sealing piston to the inside of the piston cylinder, the compressed air in the piston cylinder enters the rotating cavity of the cylinder, the rotating rod rotates clockwise and drives the fan-shaped stirring hopper to rotate clockwise due to the driving force of the compressed air on the fan blades, the traditional Chinese medicine decoction pieces in the fan-shaped stirring hopper are stacked on the upper surface of the arc-shaped stirring plate at the moment, the traditional Chinese medicine decoction pieces with better drying effect are stacked on the upper layer, the traditional Chinese medicine decoction pieces with insufficient drying effect are arranged on the lower layer, the traditional Chinese medicine decoction pieces stacked on the upper layer firstly fall and are stacked on the bottom wall of the fan-; the fan-shaped stirring hopper continues to clockwise rotate to the uppermost end, and before the stop lever is abutted against the stop block, the traditional Chinese medicine decoction pieces which are stirred and stacked in the fan-shaped stirring hopper slide down on the conveying belt at the rear side, and simultaneously the stepping motor is started to uniformly spread the stirred traditional Chinese medicine decoction pieces on the conveying belt; when the piston rod of the hydraulic cylinder extends to the longest, the piston rod of the hydraulic cylinder is reversely shortened again, the inside of the piston cylinder is changed into a negative pressure state at the moment, the pressure difference exists in the cylinder, the fan-shaped turning hopper rotates anticlockwise under the action of the gravity of the fan-shaped turning hopper, the air pressure in the piston cylinder is restored to the initial state, and meanwhile the fan-shaped turning hopper is restored to the initial state under the limiting action between the stop block at the lower end and the stop lever.

At last along with the transportation of conveyer belt for herbal pieces-after the upset gets into the inside right-hand member of stoving case, and is dried by the exhaust hot-blast in the right-hand member equipartition blast pipe, and the herbal pieces-that the effect is not enough is dried once more on the conveyer belt upper surface this moment, has effectively guaranteed the upper and lower layer herbal pieces-stoving effect of conveyer belt.

In addition, when the piston rod of the hydraulic cylinder extends, compressed air can be discharged from a second compressed air pipe connected with the cylinder, and the compressed air exhaust holes in the lower surface of the second compressed air pipe are arranged right opposite to the lower-layer conveying belt, so that air holes blocked in the lower-layer conveying belt can be dredged, and the subsequent air circulation of hot air drying is effectively ensured.

Has the advantages that:

1. the invention controls the step-by-step conveying of the conveying belt through the stepping motor, firstly, the left end in the drying box is dried, then in the process of the step-by-step conveying of the conveying belt, the Chinese herbal pieces after the first drying enter the fan-shaped turning hopper, in the process of clockwise rotation of the fan-shaped turning hopper, the Chinese herbal pieces on the upper layer firstly fall onto the bottom wall of the fan-shaped turning hopper at the moment, the Chinese herbal pieces on the lower layer fall onto and cover the upper surface of the fan-shaped turning hopper, the Chinese herbal pieces on the conveying belt can be overturned and overturned from the upper layer to the lower layer under the action of the Chinese herbal pieces overturning mechanism, the overturned Chinese herbal pieces are spread on the conveying belt, the Chinese herbal pieces enter the right end of the drying box along with the conveying of the conveying belt.

2. This device treats the herbal pieces-for-chinese-medicinal piece of drying through the conveyer belt and carries out streamlined conveying, is equipped with an even unloader in the material loading end simultaneously, and whole stoving process realizes the full automatization, and it is high not only drying efficiency, need not the whole operation of operation personnel moreover, has greatly reduced operation personnel's intensity of labour, has realized the effect that subtracts the personnel and increase efficiency, and the practicality is strong.

Drawings

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

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front plan view of the inside of the drying box in the initial state of the fan-shaped turning hopper according to the present invention;

FIG. 3 is a front plan view of the inside of the drying box when the fan-shaped turning hopper of the present invention is rotated to the topmost end;

FIG. 4 is a top view of the interior of the drying box of the present invention;

FIG. 5 is a perspective view of the exhaust pipe of the present invention;

FIG. 6 is a perspective view of the fan-shaped hopper of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 4;

fig. 8 is a plan view showing the inside of the piston cylinder and the cylinder in the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, 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 partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 8 in conjunction with an embodiment.