CN115055381A

CN115055381A - Pelletizing screening plant

Info

Publication number: CN115055381A
Application number: CN202210672112.6A
Authority: CN
Inventors: 牛南南; 唐倩; 张慧梅
Original assignee: Chongqing Medical and Pharmaceutical College
Current assignee: Chongqing Medical and Pharmaceutical College
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-16

Abstract

The invention relates to the technical field of medicine processing equipment, in particular to a pill screening device which comprises a pill making assembly, a pill conveying assembly, a pill screening assembly and a pill returning assembly, wherein the pill conveying assembly is arranged on the pill screening assembly; the pelleting assembly comprises a material barrel, the material barrel is provided with a material extruding unit for extruding the material into a strip shape, and a cutting unit for cutting the strip material into pills; the pill conveying assembly is used for conveying pills subjected to primary processing by the pill making assembly to the pill screening assembly, the pill screening assembly comprises a plurality of combined and installed strip-shaped screening units, and the strip-shaped screening units are provided with qualified screening holes or unqualified screening holes which are regularly distributed and have a single type; the combined installation comprises similar combined installation and heterogeneous combined installation; the pill re-furnace assembly is used for conveying unqualified pills to the pill making assembly. The invention can automatically extrude and cut the raw materials, round the cut pills and screen the cut pills, and can continuously improve the sphericity of the pills in the whole generation process of the pills.

Description

Pelletizing screening plant

Technical Field

The invention relates to the technical field of medicine processing equipment, in particular to a pelleting screening device.

Background

In the pharmaceutical field, after the medicine pills are manufactured, the pills are also subjected to rounding treatment by a pill rounding device. However, the size of the pills twisted by the pill twisting device is not uniform, but has different sizes. Therefore, in the packaging process before sale, in order to unify the size specification of the pills, the pills need to be sieved, so that the pills with proper size are left, and the pills with improper size are returned to the furnace for reconstruction. Existing plants are typically screened through multiple stages of screens, and screens are typically batch screened. However, during the screening process, the larger pills are easy to deposit on the bottom, which also easily blocks the holes of the screen, resulting in long screening time and thus low multi-stage screening efficiency.

Disclosure of Invention

The invention aims to provide a pill screening device which can solve the problem that sieve holes of a sieve are easy to block in the pill screening process and can further carry out rounding treatment on pills.

In order to achieve the purpose, the pill screening device comprises a pill conveying assembly, a pill screening assembly and a pill remelting assembly, wherein the pill conveying assembly is used for conveying pills subjected to primary processing by the pill conveying assembly to the pill screening assembly, the pill screening assembly comprises a plurality of strip-shaped screening units which are installed in a combined mode, and the strip-shaped screening units are provided with qualified screening holes or unqualified screening holes which are distributed regularly and are single in type; the combined installation comprises similar combined installation and heterogeneous combined installation;

the similar combination is a screening plate formed by connecting a plurality of strip-shaped screening units with the same type of screening holes in parallel and in parallel, and the screening plates are obliquely arranged; unqualified pills screened by the screening plate are input into a pill returning component;

the heterogeneous combination is a screening plate formed by connecting a plurality of strip-shaped screening units with different types of screening holes in parallel and in parallel, and the screening plate is obliquely arranged; the unqualified screening holes of the screening plate and the bottom of the screening plate are connected to the pill remelting assembly; the screening plate is provided with rotating rollers at two sides of the qualified screening holes and the unqualified screening holes which are connected in a straight line in the inclined direction, and the two rotating rollers are arranged at an acute angle;

and the pill remelting assembly is used for conveying the screened unqualified pills to the pill making assembly.

The principle and the advantages are as follows:

1. the pill conveying assembly, the pill screening assembly and the pill re-melting assembly are arranged, pills which are subjected to primary processing by the pill conveying assembly are conveyed to the pill screening assembly and then screened by the pill screening assembly, and screened unqualified pills are conveyed to the pill screening assembly by the pill re-melting assembly to be re-melted and reproduced. The whole process is highly automatic, manual participation is greatly reduced, and the working efficiency is high.

2. The bar is sieved the setting of unit, is equipped with regular distribution and the single qualified screening hole of type or unqualified screening hole on the bar screening unit, through at the in-process of transportation pellet, cooperates qualified screening hole or unqualified screening hole, comes to sieve the pellet. The strip-shaped screening units are combined in two modes, one mode is similar combination installation, and the other mode is heterogeneous combination installation, so that the strip-shaped screening units can be suitable for various requirements, environments and occasions. When the screening plate is assembled and installed in the same type, the bar-shaped screening units of the screening holes in the same type are parallelly connected together to form the screening plate, and the screening plate can be provided with a plurality of bar-shaped screening units, so that a good screening effect can be realized. And this mode of collocation slope setting can avoid the jam of pellet to the sieve mesh on the one hand, and on the other hand can realize the rounding of pellet at the in-process of screening through the effect of gravity for the pellet rolls more and more the circle.

When the screening plate is assembled in a heterogeneous mode, the bar-shaped screening units of the screening holes of different types are connected in parallel to form the screening plate, and certain screening effect, effect of dredging screen hole blockage and effect of rounding can be achieved in the same principle. Meanwhile, the two rotating rods arranged at an acute angle have the effects of limiting pills and realizing a further screening effect, so that the screening effect is improved; on the other hand, the pill can roll, so that the pill is more round.

Further, when the same type of strip-shaped screening units are selected to form screening plates, the screening plates comprise unqualified screening plates, qualified screening plates and non-sieve-hole screening plates which are obliquely arranged from top to bottom; the arrangement modes of the unqualified screening plates, the qualified screening plates and the non-screening plates comprise a parallel stacking arrangement and a zigzag arrangement, and the bottom ends of the unqualified screening plates and the non-screening plates are connected to the pill returning component.

When the screening plate is formed by the same type of bar-shaped screening units, the arrangement modes of the unqualified screening plate, the qualified screening plate and the sieve-hole-free screening plate comprise parallel stacking arrangement and zigzag arrangement, so that the screening plate can be suitable for screening in various requirements, environments and occasions.

Further, the pelleting assembly comprises a material barrel, and the material barrel is provided with a material extruding unit for extruding the material into a strip shape and a cutting unit for cutting the strip material into pills;

an extrusion opening is formed in the side wall of the material barrel, the material extrusion unit comprises a funnel, a cylinder and a rotating shaft, one end of the cylinder is fixedly connected with the extrusion opening, and the other end of the cylinder is fixed on the side wall of the material barrel; the rotating shaft is arranged in the cylinder, the side face of the rotating shaft is provided with a spiral blade, and one end, far away from the extrusion opening, of the rotating shaft penetrates through the side wall of the material barrel and is connected to an external driving assembly; the funnel is arranged in the material barrel, and an outlet of the funnel is positioned above the middle part of the cylinder and communicated with the cylinder; and a first connecting piece which drives the cutting unit to reciprocate through a rotating shaft is arranged on the outer side of the extrusion opening.

During the material in the material bucket entered into the drum through the effect of gravity from the funnel, the rotation of rethread pivot, helical blade's transmission made the material extrude from the extrusion opening, and first connecting piece cuts the unit reciprocating motion through the pivot drive and cuts the columnar material this moment, obtains the pellet of preliminary processing, has realized the synchro operation of two parts through a drive assembly.

Further, the first connecting piece comprises a sleeve and a rotary table, the sleeve is arranged in the extrusion port, the inner side wall of the sleeve is fixedly connected with the helical blade at the end part of the rotary shaft, the outer end part of the sleeve is fixed at the center of one side of the rotary table, and a through hole communicated with the sleeve is formed in the center of the rotary table;

the cutting unit comprises a bar-shaped sliding block, a limiting rod and a limiting bulge, the bar-shaped sliding block is arranged close to the rotary table, a sliding groove is formed in the contact end face of the bar-shaped sliding block, a cylindrical bulge capable of sliding in the sliding groove is arranged at the position, close to the edge, of the rotary table, blades are arranged at the two ends of the bar-shaped sliding block, the two limiting rods are fixed to the two ends of the bar-shaped sliding block respectively, the limiting bulge is fixed to the outer wall of the material barrel, and a limiting hole for the limiting rod to penetrate through is formed in the limiting bulge.

The telescopic setting can not hinder the material on the one hand and extrude from extruding the mouth, and on the other hand can drive the carousel motion through the pivot. And carousel, bar slider, cylindrical arch, gag lever post and spacing bellied setting for the carousel is in the pivoted, and cylindrical arch also can rotate, because gag lever post and spacing bellied limiting displacement, cylindrical bellied rotation can drive about the bar slider or slide from top to bottom, and the blade of both sides just can cut the bar material of extruding, obtains the pellet of primary processing. Realize still realizing the material and cutting when extruding the material.

Further, the pill remelting assembly comprises a vertically arranged cylindrical shell, a rotating shaft is rotatably connected in the cylindrical shell, a driving unit connected with the driving assembly is arranged at the top of the rotating shaft, and a helical blade is arranged on the rotating shaft; an inlet for recovering unqualified pills is formed in the side surface of the middle lower part of the cylindrical shell, and an outlet for outputting the unqualified pills into a material barrel is formed in the side surface of the upper part of the cylindrical shell;

the driving assembly comprises a driving motor, a first rotating wheel, a second rotating wheel, a first bevel gear and a second bevel gear, the first rotating wheel is coaxially driven by the driving motor and a rotating shaft, the second rotating wheel is rotatably connected with the outer wall of the upper side of the material barrel and is in belt transmission with the first rotating wheel, the first bevel gear is coaxially driven by the second rotating wheel, and the second bevel gear is meshed with the first bevel gear and is coaxially driven by a rotating shaft of the pill reheating assembly.

Due to the arrangement of the pill furnace returning assembly, unqualified pills can be collected from the bottom through the spiral blades, and then the position is improved through spiral transmission, so that the pills can conveniently return to the material barrel, and the pills can conveniently realize rounding through gravity in the follow-up process. And the driving component is arranged, so that when the rotating shaft in the material barrel is driven by the motor, on one hand, the material is convenient to extrude and cut, on the other hand, the second rotating wheel is driven by the belt transmission, and then the rotating shaft of the pill remelting component is driven to rotate by utilizing the 90-degree steering transmission of the first bevel gear and the second bevel gear, so that the unqualified pills are recycled and processed. The processing of a plurality of steps has been realized through a motor drive, and is more energy-conserving.

Further, the pill conveying assembly comprises a barrel-shaped shell unit which is stacked in multiple stages, the barrel-shaped shell unit comprises a barrel-shaped shell, a funnel is arranged in the middle of the barrel-shaped shell, a spiral transmission channel is arranged on the side wall of the middle lower portion in the barrel-shaped shell, a connecting channel is arranged between the outlet of the funnel and the upper end of the spiral transmission channel, the outlet of the spiral transmission channel is arranged on the side wall of the bottom of the barrel-shaped shell and connected to the pill screening assembly, and a fixing support is connected between the pill conveying assembly and the driving motor.

The arrangement of the hopper and the spiral conveying channel can divide the pills into a plurality of pills to be queued for transportation. And the barrel-shaped shell units which are arranged in a multi-stage stacking mode can realize the queuing and transportation of batches of pills one by one. The number of the conveying channels is arranged downwards in a spiral mode, on one hand, pills can roll continuously in the conveying process, and therefore the pills can be conveniently rounded. On the other hand, the transmission distance is increased, thereby facilitating further rounding of the pills. Thereby being beneficial to the subsequent screening work of the pill screening component. And be connected with the fixed bolster between pellet transport assembly and the driving motor, then utilize driving motor vibration at the during operation, avoid the pellet to block up in the funnel bottom or block up on spiral transmission path, realized the effect of mediation.

Further, demountable installation has the apron on the through-hole, the apron flushes with the carousel surface after the installation, seted up on the apron if open and extrude the auxiliary hole.

The cover plate and the extrusion auxiliary holes are arranged, so that a plurality of material strips can be extruded at one time, and the pelleting efficiency is improved. And the cover plate can be freely detached and replaced, so that the number of the extrusion auxiliary holes can be changed, and the size of the extrusion auxiliary holes can also be changed. Thereby being suitable for the processing requirements of pills with different sizes.

Drawings

FIG. 1 is a schematic structural diagram of a pelletizing screening device according to a first embodiment of the present invention;

FIG. 2 is a top view of the screening deck of FIG. 1;

FIG. 3 is a top view of the sieve plate and transport conduit of FIG. 1;

FIG. 4 is an isometric view of the transfer line of FIG. 1;

FIG. 5 is an enlarged, fragmentary schematic view of the bolus delivery assembly of FIG. 1;

FIG. 6 is a right side view of the pelletizing assembly of FIG. 1;

FIG. 7 is a partial isometric view of the turntable and sleeve of FIG. 1;

FIG. 8 is a schematic view of a partial structure of a screening plate of a pelletizing screening device according to a second embodiment of the present invention, which is assembled in the same manner and stacked in parallel;

fig. 9 is a schematic structural diagram of screening plates of a pelletizing screening device according to a second embodiment of the present invention, which are assembled in the same type and arranged in a zigzag manner.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the pill melting furnace comprises a pill melting furnace component 1, a rotating shaft 2, a spiral blade 3, a material barrel 4, a primary barrel-shaped shell unit 5, a secondary barrel-shaped shell unit 6, a transmission pipeline 7, a rotating rod 8, a screening plate 9, a pill collecting box 10, a strip-shaped screening unit 11, an unqualified screening hole 12, a qualified screening hole 13, a funnel 14, a spiral transmission channel 15, an unqualified screening plate 16, a qualified screening plate 17, a non-screening hole screening plate 18, a driving motor 19, a first rotating wheel 20, a second rotating wheel 21, a first bevel gear 22, a second bevel gear 23, a rotary disk 24, a sleeve 25, a rotating shaft 26, a strip-shaped sliding block 27, a limiting rod 28, a limiting protrusion 29, a cylindrical protrusion 30, a blade 31, a cover plate 32 and an extrusion auxiliary hole 33.

Example one

A pelletizing screen assembly substantially as described herein with reference to figures 1 to 8 of the accompanying drawings: comprises a pill making component, a pill conveying component, a pill screening component and a pill returning component 1.

As shown in fig. 1 and 6, the pelleting assembly comprises a material barrel 4, wherein the material barrel 4 is provided with a material extruding unit for extruding materials into a strip shape and a cutting unit for cutting the strip material into pills;

an extrusion opening is formed in the side wall of the material barrel 4, the material extrusion unit comprises a funnel, a cylinder and a rotating shaft 26, one end of the cylinder is fixedly connected with the extrusion opening, and the other end of the cylinder is fixedly connected with the side wall of the material barrel 4; the rotating shaft 26 is arranged in the cylinder, the side face of the rotating shaft is provided with the spiral blade 3, and one end, far away from the extrusion opening, of the rotating shaft penetrates through the side wall of the material barrel 4 and is connected to an external driving assembly; the funnel is arranged in the material barrel 4, and an outlet of the funnel is positioned above the middle part of the cylinder and communicated with the cylinder; and a first connecting piece for driving the cutting unit to reciprocate through a rotating shaft 26 is arranged outside the extrusion opening.

As shown in fig. 6, the first connecting member includes a sleeve 25 and a rotating disc 24, the sleeve 25 is disposed in the extrusion port, the inner side wall of the sleeve 25 is fixedly connected with the helical blade 3 at the end of the rotating shaft 26, the outer end of the sleeve 25 is fixed in the center of one side of the rotating disc 24, and the center of the rotating disc 24 is provided with a through hole communicated with the sleeve 25; as shown in fig. 7, a cover plate 32 is detachably mounted on the through hole, the cover plate 32 is flush with the outer surface of the turntable 24 after being mounted, and a plurality of extrusion auxiliary holes 33 are formed in the cover plate 32. In this embodiment, the detachable attachment means includes a screw connection, a snap connection, and the like, and five extrusion auxiliary holes 33 are provided in the cover plate 32.

The cutting unit comprises a bar-shaped sliding block 27, a limiting rod 28 and a limiting bulge 29, the bar-shaped sliding block 27 is arranged close to the rotary table 24, a sliding groove is formed in the contact end face of the bar-shaped sliding block 27, a cylindrical bulge 30 capable of sliding in the sliding groove is arranged at the position, close to the edge, of the rotary table 24, blades 31 are arranged at the two ends of the bar-shaped sliding block 27, the blades 31 are thin and slice-shaped, and the rotary table 24 is attached. Two limiting rods 28 are respectively fixed at two ends of the strip-shaped sliding block 27, the limiting bulge 29 is fixed on the outer wall of the material barrel 4, and a limiting hole for the limiting rod 28 to pass through is formed in the limiting bulge 29. Wherein the cylindrical protrusion 30 is detachably connected to the rotary disk 24, for example, by a mating connection of a bolt and a threaded hole. The threaded holes can be arranged in a plurality of numbers, and the distance from each threaded hole to the circle center of the rotary table 24 is different, so that the frequency of the left-right reciprocating motion of the bar-shaped sliding block 27 can be controlled by reasonably selecting the threaded holes, for example, the closer the distance from the circle center is, the higher the frequency of the left-right reciprocating motion of the bar-shaped sliding block 27 is, the farther the distance from the circle center is, and the lower the frequency of the left-right reciprocating motion of the bar-shaped sliding block 27 is. Meanwhile, the strip-shaped sliding block 27 is made as long as possible, so that certain adverse effects on the extrusion opening are avoided.

As shown in fig. 1 and 5, the pill conveying assembly is used for conveying the primarily processed pills of the pill making assembly to the pill sieving assembly. The pill conveying assembly comprises a barrel-shaped shell unit which is stacked in multiple stages, the barrel-shaped shell unit comprises a barrel-shaped shell, a funnel 14 is arranged in the middle of the barrel-shaped shell, a spiral transmission channel 15 is arranged on the side wall of the middle lower part in the barrel-shaped shell, a connecting channel is arranged between the outlet of the funnel 14 and the upper end of the spiral transmission channel 15, and the outlet of the spiral transmission channel 15 is arranged on the side wall of the bottom of the barrel-shaped shell and connected to the pill screening assembly. In this embodiment, the barrel-shaped housing unit has two stages, which are a first-stage barrel-shaped housing unit 5 and a second-stage barrel-shaped housing unit 6, the first-stage barrel-shaped housing unit 5 and the second-stage barrel-shaped housing unit 6 are communicated with each other, the top of the first-stage barrel-shaped housing unit 5 is closed and provided with a feed port, and the bottom of the second-stage barrel-shaped housing unit is closed. The pill conveyor has the advantages that batch pills can be queued and transported one by one, and can be transported in a long distance, so that the pill conveyor has a rounding effect on the pills.

The pill screening component comprises a plurality of strip-shaped screening units 11 which are installed in a combined mode, and the strip-shaped screening units 11 are provided with qualified screening holes 13 or unqualified screening holes 12 which are regularly distributed and have a single type; the combined installation comprises similar combined installation and heterogeneous combined installation;

the similar combination is a screening plate 9 formed by connecting a plurality of strip-shaped screening units 11 with the same type of screening holes in parallel and in parallel, and the screening units are obliquely arranged; unqualified pills screened by the screening plate 9 are input into the pill remelting assembly 1;

the heterogeneous combination is arranged as a screening plate 9 formed by connecting a plurality of strip-shaped screening units 11 with different types of screening holes in parallel and in parallel, and the screening units are obliquely arranged; the unqualified screening holes 12 of the screening plate 9 and the bottom of the screening plate 9 are connected to the pill remelting assembly 1; the screening plate 9 is provided with rotary rods 8 in the inclined direction and on the two sides of the qualified screening holes 13 and the unqualified screening holes 12 which are connected in a straight line, the two rotary rods 8 are arranged at an acute angle, and if the two rotary rods 8 are in a splayed shape, the rotary rods 8 are driven by a micro motor. In fig. 1, two strip-shaped screening units 11 form one screening deck 9. With the strip-shaped screening units 11 of the defective screening holes 12 above and the strip-shaped screening units 11 of the defective screening holes 13 below, as shown in particular in figure 2.

Below the acceptable screening holes 13 there is provided a pill collection bin 10 and below the unacceptable screening holes 12 there is provided a conduit for conveying the unacceptable material to the pill re-oven assembly 1. The ends of the strip-shaped screening units 11 are also connected to the pill-reheating module 1 by means of pipes.

As shown in fig. 1, 3 and 4, a conveying pipeline 7 is arranged above the strip-shaped sieving unit 11 of the unqualified sieving hole 12, the conveying pipeline 7 is a square pipe with a U-shaped section, one end of the conveying pipeline 7 is connected with an outlet of the pill conveying assembly, the barrel-shaped shell unit and the spiral conveying channel 15, and the other end of the conveying pipeline is obliquely arranged. And the transmission pipeline 7 rotates about 45 degrees in the vertical direction, and a slot is arranged on the side wall of one side above the strip-shaped sieving unit 11 corresponding to the unqualified sieving hole 12, so that pills can fall onto the sieving plate 9 through the slot. The long-distance transportation through the transmission pipeline 7 has the effect of rounding the pills.

The pill remelting assembly 1 is used for conveying the screened unqualified pills to the pill making assembly. The pill remelting component 1 comprises a vertically arranged cylindrical shell, a rotating shaft 2 is rotatably connected in the cylindrical shell, a driving unit connected with a driving component is arranged at the top of the rotating shaft 2, and a helical blade 3 is arranged on the rotating shaft 2; the side surface of the middle lower part of the cylindrical shell is provided with an inlet for recovering unqualified pills, and the side surface of the upper part of the cylindrical shell is provided with an outlet for discharging unqualified pills. A fixing bracket (not shown in fig. 1) is connected between the pill delivery assembly and the driving motor 19, and is used for transmitting the vibration generated when the driving motor 19 works to the shell of the pill delivery assembly.

The drive assembly comprises a drive motor 19, a first rotating wheel 20, a second rotating wheel 21, a first bevel gear 22 and a second bevel gear 23, the first rotating wheel 20 and a rotating shaft 26 are coaxially driven and driven by the drive motor 19, the second rotating wheel 21 is rotatably connected with the outer wall of the upper side of the material barrel 4 and is in belt transmission with the first rotating wheel 20, the first bevel gear 22 and the second rotating wheel 21 are coaxially driven, and the second bevel gear 23 is meshed with the first bevel gear 22 and is coaxially driven with a rotating shaft 2 of the pill reheating assembly 1. In this embodiment, the driving unit is a second bevel gear 23.

The specific implementation process is as follows:

the raw materials are put into the pelleting component, the driving motor 19 is started, the driving motor 19 drives the rotating shaft 26 to rotate, and the materials are extruded out of the extrusion port. At the same time, the rotary table 24 is rotated, thereby driving the bar-shaped slide block 27 to reciprocate left and right through the cylindrical protrusion 30. And then automatically cutting the extruded material. The cut materials are pills which are processed primarily, the pills which are processed primarily enter the pill conveying assembly through gravity, the fixed support is used for transmitting the vibration of the driving motor 19 during working, the pills are prevented from being blocked at the bottom of the funnel 14 or on the spiral conveying channel 15, and the dredging effect is achieved. Therefore, the pills are conveyed out in a queue one by one through the conveying pipeline 7, conveyed to the screening plate 9, screened by the screening plate 9 and the rotating roller 8, qualified and conveyed to the pill collecting box 10, and unqualified and conveyed to the pill making assembly through the pill return assembly 1 for reprocessing. When the driving motor 19 is started, the first rotating wheel 20, the second rotating wheel 21, the first bevel gear 22 and the second bevel gear 23 drive the rotating shaft 2 of the pill reheating component 1 to rotate, so that unqualified pills are returned to the pill making component through the pill reheating component 1 to be processed again, and the transmission utilization rate of the whole device is high. In addition, in the whole screening process, the screening efficiency is improved, and pills can be rounded.

Example two

The difference between the second embodiment and the first embodiment is that the screening plates 9 are formed by the same type of strip-shaped screening units 11; the screening plate 9 comprises an unqualified screening plate 16, a qualified screening plate 17 and a non-sieve-hole screening plate 18 which are obliquely arranged from top to bottom; the arrangement modes of the unqualified screening plates, the qualified screening plates and the non-screening hole screening plates comprise parallel stacking arrangement and zigzag arrangement.

When the parallel stacking arrangement is adopted, baffles are arranged around the unqualified screening plates 16, the qualified screening plates 17 and the non-sieve-hole screening plates 18, as shown in fig. 8. The unqualified screening plate 16 and the non-sieve screening plate 18 are connected to the pill re-melting assembly 1, in this embodiment, the baffle plate at the lowest side of the unqualified screening plate 16 and the non-sieve screening plate 18 is provided with a connecting pipe in the shape of a funnel 14, and the other end of the connecting pipe is connected to the pill re-melting assembly 1. The qualified screening plates 17 are provided with rotary rods 8 on two sides of the qualified screening holes 13 which are connected in a straight line in the inclined direction.

When a zig-zag arrangement is used, the vertical cross-section of the non-conforming 16, conforming 17 and non-apertured 18 screening plates is zig-zag, as shown in figure 9.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is described herein in more detail, so that a person of ordinary skill in the art can understand all the prior art in the field and have the ability to apply routine experimentation before the present date, after knowing that all the common general knowledge in the field of the invention before the application date or the priority date of the invention, and the person of ordinary skill in the art can, in light of the teaching provided herein, combine his or her own abilities to complete and implement the present invention, and some typical known structures or known methods should not become an obstacle to the implementation of the present invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a pill screening plant which characterized in that: the pill screening device comprises a pill conveying assembly, a pill screening assembly and a pill reheating assembly, wherein the pill conveying assembly is used for conveying pills subjected to primary processing by a pill making assembly to the pill screening assembly, the pill screening assembly comprises a plurality of combined strip-shaped screening units, and the strip-shaped screening units are provided with qualified screening holes or unqualified screening holes which are regularly distributed and have a single type; the combined installation comprises similar combined installation and heterogeneous combined installation;

2. A pellet screening device as claimed in claim 1, wherein: when the screening plates are formed by the same type of strip-shaped screening units, the screening plates comprise unqualified screening plates, qualified screening plates and non-sieve-hole screening plates which are obliquely arranged from top to bottom; the arrangement modes of the unqualified screening plates, the qualified screening plates and the non-screening plates comprise a parallel stacking arrangement and a zigzag arrangement, and the bottom ends of the unqualified screening plates and the non-screening plates are connected to the pill returning component.

3. A pelletizing screen as claimed in claim 1, wherein: the pelleting assembly comprises a material barrel, and the material barrel is provided with a material extruding unit for extruding materials into a strip shape and a cutting unit for cutting the strip material into pills;

4. A pelletizing screen as claimed in claim 3, wherein: the first connecting piece comprises a sleeve and a rotary table, the sleeve is arranged in the extrusion port, the inner side wall of the sleeve is fixedly connected with the helical blade at the end part of the rotary shaft, the outer end part of the sleeve is fixed at the center of one side of the rotary table, and a through hole communicated with the sleeve is arranged at the center of the rotary table;

5. A pelletizing screen as claimed in claim 3, wherein: the pill remelting assembly comprises a vertically arranged cylindrical shell, a rotating shaft is rotatably connected in the cylindrical shell, a driving unit connected with a driving assembly is arranged at the top of the rotating shaft, and a helical blade is arranged on the rotating shaft; an inlet for recovering unqualified pills is formed in the side surface of the middle lower part of the cylindrical shell, and an outlet for outputting the unqualified pills into a material barrel is formed in the side surface of the upper part of the cylindrical shell;

6. A pelletizing screening device according to claim 5, characterized in that: the pill conveying assembly comprises a barrel-shaped shell unit which is stacked in multiple stages, the barrel-shaped shell unit comprises a barrel-shaped shell, a funnel is arranged in the middle of the interior of the barrel-shaped shell, a spiral transmission channel is arranged on the side wall of the middle lower portion in the barrel-shaped shell, a connecting channel is arranged between the outlet of the funnel and the upper end of the spiral transmission channel, the outlet of the spiral transmission channel is arranged on the side wall of the bottom of the barrel-shaped shell and connected to a pill screening assembly, and a fixing support is connected between the pill conveying assembly and a driving motor.

7. A pelletizing screening device according to claim 4, characterized in that: the cover plate is detachably mounted on the through hole, the cover plate is flush with the outer surface of the rotary table after being mounted, and the cover plate is provided with a secondary extrusion hole if opened.