CN113275232A - Cimetidine tablet screening process and equipment - Google Patents
Cimetidine tablet screening process and equipment Download PDFInfo
- Publication number
- CN113275232A CN113275232A CN202110476898.XA CN202110476898A CN113275232A CN 113275232 A CN113275232 A CN 113275232A CN 202110476898 A CN202110476898 A CN 202110476898A CN 113275232 A CN113275232 A CN 113275232A
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- Prior art keywords
- screening
- tank
- groove
- screening tank
- sieve
- Prior art date
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Links
- 238000012216 screening Methods 0.000 title claims abstract description 227
- CCGSUNCLSOWKJO-UHFFFAOYSA-N cimetidine Chemical compound N#CNC(=N/C)\NCCSCC1=NC=N[C]1C CCGSUNCLSOWKJO-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229960001380 cimetidine Drugs 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 40
- 239000012535 impurity Substances 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 208000000718 duodenal ulcer Diseases 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 208000007107 Stomach Ulcer Diseases 0.000 description 1
- 206010042220 Stress ulcer Diseases 0.000 description 1
- 201000008629 Zollinger-Ellison syndrome Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 201000005917 gastric ulcer Diseases 0.000 description 1
- 201000000052 gastrinoma Diseases 0.000 description 1
- 208000021302 gastroesophageal reflux disease Diseases 0.000 description 1
- 208000000689 peptic esophagitis Diseases 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/08—Screens rotating within their own plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/522—Cleaning with brushes or scrapers with brushes
- B07B1/524—Cleaning with brushes or scrapers with brushes the brushes being rotating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/02—Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Abstract
The invention discloses a cimetidine tablet screening process and screening equipment thereof, wherein large granular impurities larger than the pore diameter of a first sieve plate and small granular impurities smaller than the pore diameter of a second sieve plate are screened out by a primary sieve and a fine sieve; the screening tank can rotate in a reciprocating manner around a central shaft of the screening tank in the screening tank under the driving of the driving mechanism; an opening is formed in the bottom of the screening slot, and a screen plate is detachably connected to the opening; the upper end surface of the screening tank is respectively provided with a feed inlet and a cleaning port, and the lower end surface of the screening tank is provided with a discharge outlet; the cleaning assembly can enter the cleaning port of the screening tank to do rotary reciprocating motion in the screening tank or exit the cleaning port. The sieve plate of the invention is replaceable, convenient to disassemble and clean, and improves the screening efficiency.
Description
Technical Field
The invention relates to the technical field of medicine processing equipment, in particular to a cimetidine tablet screening process and a cimetidine tablet screening device.
Background
Cimetidine tablet for treating duodenal ulcer, gastric ulcer, reflux esophagitis, stress ulcer and Zollinger-Ellison syndrome. Need filter the tablet in the cimetidine piece course of working, but the most sieve meshes of current sieve separator are fixed, can't satisfy the screening of tablet in the difference, and sieve vibration or rocking in the screening process, granule dust accumulation or granule tablet card inferior is in the sieve mesh, cause the jam, adopt the mode of artifical clearance sieve usually among the prior art, can't dredge the sieve mesh fast, waste time and energy, whole screening efficiency is low, and the sieve is difficult for dismantling usually, be difficult to clear up, therefore, it can replace to propose a sieve, convenient to detach, be convenient for clear up the sieve, cimetidine piece screening process and the screening installation that improve screening efficiency.
Disclosure of Invention
In view of the technical problems in the background art, the invention provides a cimetidine tablet screening process and screening equipment thereof, wherein a screen plate is replaceable, is convenient to disassemble and clean, and improves screening efficiency. In order to achieve the purpose, the invention provides the following technical scheme:
a cimetidine tablet screening process comprises the following steps:
(1) the first screening tank is driven by a driving mechanism to rotate around the central shaft of the first screening tank, small particle impurities smaller than the mesh aperture of the first screen plate and cimetidine slices meeting the standard fall into a receiving tank below, and large particle impurities larger than the mesh aperture of the first screen plate are screened out;
(2) fine screening, namely pouring the raw materials of the material receiving tank in the step (1) into a second screening tank from a feed inlet of the second screening tank, wherein the second screening tank can rotate around a central shaft of the second screening tank in a reciprocating manner in the second screening tank under the driving of a driving mechanism, and small-particle impurities smaller than the pore size of a second sieve plate are screened;
the pore diameter of the sieve pore of the first sieve plate is larger than the size of the cimetidine tablet meeting the standard; the second sieve plate has a sieve pore size smaller than the standard cimetidine tablet size.
Screening equipment for a cimetidine tablet screening process adopts a screening tank, and further comprises a screening groove, a driving mechanism and a cleaning assembly; the screening tank can rotate around the central shaft of the screening tank in the screening tank under the driving of the driving mechanism; an opening I is formed in the bottom of the screening tank, and a screen plate is detachably connected to the opening I; the upper end surface of the screening tank is respectively provided with a feed inlet and a cleaning port, and the lower end surface of the screening tank is provided with a discharge outlet; the cleaning assembly can enter the cleaning port of the screening tank to do rotary reciprocating motion in the screening tank or exit the cleaning port; when the cleaning assembly rotates in the screening groove, the cleaning assembly is abutted to the screening plate.
The screening equipment further comprises a turntable, a worm and a moving block; the screening groove is disc-shaped, and an opening I at the bottom of the screening groove is circular and coaxial with the screening groove; a circle of limiting plate extends from the opening I to the interior of the screening groove; a fixed ring is inscribed in the screening groove, and a plurality of through grooves are uniformly distributed on the fixed ring along the radial direction; the rotary disc is matched with the inner wall of the screening groove; a through hole is formed in the center of the rotary table, and a circle of circular-ring-shaped bulge matched with the outer wall of the limiting plate is downwards arranged at the through hole; the annular bulge is sleeved on the outer wall of the limiting plate, and part of worm gear teeth are arranged on the outer wall of the annular bulge; two ends of the worm are respectively and rotatably connected with the inner wall of the screening groove, and the worm is meshed with the worm wheel; a plurality of arc-shaped grooves are uniformly distributed on the upper end surface of the rotary table along the central shaft of the rotary table; the number of the moving blocks is multiple; the moving blocks are arranged in the through grooves of the corresponding fixed circular rings, and sliding blocks matched with the arc-shaped grooves of the corresponding rotary discs are arranged below the moving blocks; each sliding block is arranged in the corresponding arc-shaped groove of the rotating disc and can move along the arc-shaped groove; one end of each moving block, which is close to the circle center, is provided with a clamping plate for clamping the sieve plate.
The screening equipment further comprises an electric telescopic rod; a valve is arranged at the cleaning port; one end of the electric telescopic rod can rotate in the screening groove along the center of the screening groove under the driving of the motor, and the other end of the electric telescopic rod is fixedly connected with the cleaning assembly.
The cleaning assembly adopts a hairbrush.
The driving mechanism comprises a connecting ring, a driving handle, two driven handles and three connecting rods; one ends of the driving handle and the two driven handles are respectively and rotatably connected with the bottom surface inside the screening tank and are uniformly distributed along the central shaft of the screening tank; the other ends of the driving handle and the two driven handles are respectively and rotatably connected with one end of the corresponding connecting rod; the other ends of the three connecting rods are respectively fixedly connected with the outer side wall of the connecting ring; the screening groove is detachably installed on the inner wall of the connecting frame.
The screening equipment also comprises a feeding hose and a feeding frame; the feeding frame is detachably and internally connected in the screening tank and above the screen plate; one end of the feeding hose is connected with a feeding port of the screening tank, and the other end of the feeding hose is connected with the center of the feeding frame.
The inner hole of the fixed circular ring, the through hole of the rotary disc and the opening I of the screening groove have the same aperture; the sieve plate can cover the inner hole of the fixed circular ring completely, and the lower end face of the sieve plate is abutted to the upper end face of the fixed circular ring.
Screening jar lateral wall is equipped with opening II, and II departments of opening are equipped with the jar door.
The invention has the beneficial effects that:
1. the invention is provided with the sieve plate which is convenient to disassemble, and the sieve plate with different sieve pore diameters is convenient to replace so as to be suitable for screening cimetidine tablets with different sizes or used for two-stage screening, and meanwhile, the sieve plate is convenient to clean;
2. opening a valve in the screening process, controlling an electric telescopic rod to drive a brush to extend into the screening tank through a cleaning opening, starting a cleaning motor, and cleaning the sieve plate by reciprocating rotation of the brush;
3. large particle impurities larger than the mesh diameter of the first sieve plate and small particle impurities smaller than the mesh diameter of the second sieve plate are screened out by arranging a primary sieve and a fine sieve;
4. through set up feeding hose and pay-off frame between feed inlet and screening groove, feeding hose can keep screening groove to rotate the in-process screening groove and remain connected with the feed inlet throughout, improves screening efficiency.
Drawings
FIG. 1 is a schematic view of the internal structure of a screening tank of the present invention;
FIG. 2 is a schematic view showing the position of a screening chamber in the present invention;
FIG. 3 is a schematic view of the structure of the screening chute of the present invention (omitting the feeder frame);
FIG. 4 is a schematic view of the installation of the screening chute of the present invention;
FIG. 5 is a schematic view of the position structure of the turntable and the worm in the present invention;
in the figure, 1-screening tank, 101-feeding port, 102-cleaning port, 103-discharging port, 2-driven handle, 3-connecting rod, 4-screening groove, 401-opening I, 5-feeding hose, 6-valve, 7-cleaning component, 8-electric telescopic rod, 9-cleaning motor, 10-support, 11-supporting leg, 12-screening motor, 13-driving handle, 14-connecting ring, 15-support plate, 16-adjusting motor, 17-feeding frame, 18-clamping plate, 19-screening plate, 20-worm, 21-moving block, 22-fixed circular ring, 2201-through groove, 2202-inner hole, 23-rotary table, 2301-arc groove, 2302-circular bulge, 2303-through hole, 24-limiting plate, 25-slider.
Detailed Description
With reference to fig. 1 to 5, a cimetidine tablet screening process comprises the following steps:
(1) primary screening, namely pouring cimetidine tablets to be screened into a first screening tank 4 from a feed inlet 101 of a first screening tank 1, wherein the first screening tank 4 can rotate around the central shaft of the first screening tank 1 in the first screening tank 1 under the driving of a driving mechanism, small particle impurities smaller than the mesh aperture of a first screen plate 19 and cimetidine tablets meeting the standard fall into a receiving tank below, and large particle impurities larger than the mesh aperture of the first screen plate 19 are screened;
(2) and (3) fine screening, wherein the raw materials of the material receiving tank in the step (1) are poured into a second screening tank 4 from a feeding hole 101 of the second screening tank 1, the second screening tank 4 can rotate around a central shaft of the second screening tank 1 in a reciprocating manner under the driving of a driving mechanism, and small particle impurities smaller than the aperture of the 19 sieve holes of the second sieve plate are screened.
Screening equipment of a cimetidine tablet screening process adopts a screening tank 1, a support leg 11 is arranged below the screening tank 1, and the screening equipment further comprises a screening groove 4, a driving mechanism and a cleaning assembly 7; the screening tank 4 can rotate around the central shaft of the screening tank 1 in the screening tank 1 under the driving of the driving mechanism; an opening I401 is formed in the bottom of the screening groove 4, and a screen plate 19 is detachably connected to the opening I401; the upper end surface of the screening tank 1 is respectively provided with a feeding hole 101 and a cleaning hole 102, the lower end surface of the screening tank 1 is provided with a discharging hole 103, and an external material receiving groove (not shown in the figure) is arranged below the discharging hole 103; the cleaning component 7 can enter the cleaning port 102 of the screening tank 1 to do rotary reciprocating motion in the screening tank 4 or exit the cleaning port 102; when the cleaning assembly 7 rotates in the screening slot 4, the cleaning assembly 7 is in contact with the screening plate 19 and is used for cleaning the blocked screening holes on the screening plate 19.
As shown in fig. 1-2, the screening apparatus further comprises a turntable 23, a worm 20, and a moving block 21; the screening groove 4 is disc-shaped, and an opening I401 at the bottom of the screening groove 4 is circular and coaxial with the screening groove 4; a circle of limiting plates 24 extend from the opening I401 to the interior of the screening groove 4; a fixed ring 22 is inscribed in the screening groove 4, and a plurality of through grooves 2201 are uniformly distributed on the fixed ring 22 along the radial direction; the rotary table 23 is matched with the inner wall of the screening groove 4 (the screening groove 4, the rotary table 23, the fixed ring 22 and the limiting plate 24 are all coaxial); the rotating disc 23 is arranged between the fixed circular ring 22 and the limiting plate 24, a through hole 2301 is arranged at the center of the rotating disc 23, and a circle of circular-ring-shaped protrusions 2302 matched with the outer wall of the limiting plate 24 is downwards arranged at the through hole 2301; the circular protrusion 2302 is sleeved on the outer wall of the retainer plate 24, the rotary disc 23 can rotate around a circle of the retainer plate 24, and part of worm gear teeth (not shown in the figure) are arranged on the outer wall of the circular protrusion 2302; two ends of a worm 20 are respectively rotatably connected with the inner wall of the screening groove 4, the worm 20 is meshed with a worm wheel, when the worm 20 rotates (as shown in fig. 1-4, a support plate 15 is arranged on the outer wall of the screening groove 4, an adjusting motor 16 is arranged on the support 10, the worm 20 is in transmission connection with the adjusting motor 16, the worm 20 rotates forwards or backwards under the driving of the adjusting motor 16) to drive the worm wheel meshed with the worm to rotate, a rotary disc 23 is matched with the inner wall of the screening groove 4, and under the limiting of the inner wall of the screening groove 4, a circular ring-shaped bulge 2302 drives the rotary disc 23 to rotate around a limiting plate 24; the upper end surface of the turntable 23 is uniformly distributed with a plurality of arc-shaped grooves 2301 along the central axis of the turntable 23; a plurality of moving blocks 21 are provided; the moving blocks 21 are arranged in the through grooves 2201 of the corresponding fixed circular rings 22, and sliding blocks 25 matched with the arc-shaped grooves 2301 of the corresponding rotating discs 23 are arranged below the moving blocks; each slide block 25 is arranged in the arc-shaped groove 2301 of the corresponding rotary table 23 and can move along the arc-shaped groove 2301; one end of each moving block 21, which is close to the center of the circle, is provided with a clamping plate 18 for clamping the sieve plate 19, when the rotating disc 23 rotates, each arc-shaped groove 2301 on the rotating disc 23 pushes the corresponding sliding block 25 to drive the moving block 21 to move on the corresponding through groove 2201 of the fixed ring 22 in the radial direction, when the clamping plate 18 on each moving block 21 is close to the center of the circle of the rotating disc 23, the sieve plate 19 is clamped, and when the clamping plate 18 on each moving block 21 is far away from the center of the circle of the rotating disc 23, the sieve plate 19 is loosened.
The screening equipment also comprises an electric telescopic rod 8; a valve 6 is arranged at the cleaning port 102, the valve 6 can be a push-pull type baffle which can horizontally move on the upper end surface of the screening tank 1, and the valve is closed when not cleaned; 8 one ends of electric telescopic handle can be rotary motion along the 4 centers of screening groove in screening groove 4 through the motor, the other end and clearance subassembly 7 fixed connection, as shown in fig. 1, 1 up end of screening jar is equipped with support 10, be equipped with clearance motor 9 on the support 10, 8 one ends of electric telescopic handle link to each other with the transmission of clearance motor 9, when will clear up sieve 19, open valve 6, expose clearance mouth 102, 8 extensions of electric telescopic handle, stretch into screening jar 1 through clearance mouth 102 (screening groove 4 this moment is located clearance mouth 102 under), clearance subassembly 7 is inconsistent with sieve 19, start clearance motor 9, 8 drive of electric telescopic handle clearance subassembly 7 is reciprocal rotatory on sieve 19, the sieve hole is cleared up to sieve 19.
The cleaning assembly 7 adopts a hairbrush, so that the sieve pores are convenient to clean.
The driving mechanism comprises a connecting ring 14, a driving handle 13, two driven handles 2 and three connecting rods 3; one ends of the driving handle 13 and the two driven handles 2 are respectively and rotatably connected with the bottom surface inside the screening tank 1 and are uniformly distributed along the central shaft of the screening tank 1; the other ends of the driving handle 13 and the two driven handles 2 are respectively and rotatably connected with one end of the corresponding connecting rod 3; the other ends of the three connecting rods 3 are respectively fixedly connected with the outer side wall of the connecting ring 14; screening groove 4 detachably installs at the link inner wall, is convenient for take out.
The screening equipment also comprises a feeding hose 5 and a feeding frame 17; the feeding frame 17 is detachably connected with the position in the screening tank 1 and above the screen plate 19, and the feeding frame 17 is taken down when the screen plate 19 is required to be replaced; one end of the feeding hose 5 is connected with the feeding hole 101 of the screening tank 1, the other end of the feeding hose 5 is connected with the center of the feeding frame 17, the feeding hose 5 can keep the screening groove 4 and the feeding hole 101 always connected in the rotation process of the screening groove 4, the screening is not required to be stopped and the feeding is carried out again, and the screening efficiency is improved.
The inner hole 2202 of the fixed ring 22, the through hole 2301 of the turntable 23 and the opening I401 of the screening groove 4 have the same aperture; the sieve plate 19 can cover the inner hole 2202 of the fixed ring 22 completely, and the lower end face of the sieve plate 19 is abutted against the upper end face of the fixed ring 22, so that a gap is prevented from being formed between the sieve plate 19 and the inner hole 2202 of the fixed ring 22.
The side wall of the screening tank 1 is provided with an opening II, and a tank door is arranged at the opening II and used for taking out the sieve plate 19 or the screening tank 4.
As shown in fig. 1-5, the working principle and flow of the present invention are as follows:
when the sieve plate 19 is needed to be cleaned or replaced, the tank door is opened, the feeding frame 17 is detached, the adjusting motor 16 is started to drive the worm 20 to rotate clockwise, the worm 20 drives the worm wheel part to rotate anticlockwise (as shown in fig. 4-5), the arc-shaped groove 2301 on the rotary table 23 pushes the corresponding sliding block 25 to drive the moving block 21 to move in the circle center of the rotary table 23 along the radial direction on the corresponding fixed ring 22 through groove 2201, then the plurality of clamping plates 18 are far away from the circle center, the fixation of the sieve plate 19 is lost, and the sieve plate 19 is taken down.
The adjusting motor 16 is started to drive the worm 20 to rotate clockwise, the worm 20 drives the worm gear teeth to rotate counterclockwise (as shown in fig. 4-5), the rotating disc 23 is driven to rotate clockwise, the arc-shaped groove 2301 on the rotating disc 23 pushes the corresponding sliding block 25 to drive the moving block 21 to move in the center of the rotating disc 23 along the radial direction on the corresponding through groove 2201 of the fixed ring 22, the clamping plates 18 are gathered to the center of the circle, and the replaced sieve plate 19 is clamped.
The cimetidine tablet to be screened is poured from a feeding hole 101 of a screening tank 1, is poured into a screening groove 4 along a feeding hose 5, a screening motor 12 is started, the screening motor 12 rotates to drive one end of a driving handle 13 to rotate on the bottom surface inside the screening tank 1, the other end of the driving handle 13 drives a connecting rod 3 which is rotatably connected with the driving handle to rotate, a connecting ring 14 drives the other ends of two driven handles 2 to rotate, the screening groove 4 which is connected with the connecting ring 14 rotates around the central shaft of the screening tank 1, the moving track is the driving handle 13, the two driven handles 2 and one end of the screening tank 1 which is rotatably connected define a circumferential edge, the cimetidine tablet to be screened rocks in the screening groove 4, small particle materials smaller than the aperture of a screen hole fall under the screen hole, the small particle materials fall into a receiving groove below from a discharging hole 103 of the screening tank 1, and large particle materials larger than the aperture of the screen hole are remained in the screening groove 4.
The screening jar 1 is two, and the sieve 19 mesh aperture that is used for the first screening jar 1 of prescreening is slightly greater than the cimetidine piece size that accords with the standard, and the sieve 19 mesh aperture that is used for the second screening jar 1 of fine screen is slightly less than the cimetidine piece size that accords with the standard.
Firstly, primary screening, namely pouring cimetidine tablets to be screened into a first screening tank 4 from a feed inlet 101 of a first screening tank 1, wherein the first screening tank 4 can rotate around the central shaft of the first screening tank 1 in a reciprocating manner in the first screening tank 1 under the driving of a driving mechanism, small particle impurities smaller than the mesh diameter of a first sieve plate 19 and cimetidine tablets meeting the standard fall into a receiving tank below, and large particle impurities larger than the mesh diameter of the first sieve plate 19 are screened;
and a second step of fine screening is carried out, wherein the raw material of the material receiving groove in the first step is poured into a second screening groove 4 from a feeding hole 101 of a second screening tank 1, the second screening groove 4 can rotate around the central shaft of the second screening tank 1 in a reciprocating manner under the driving of a driving mechanism, and small particle impurities smaller than the aperture of the 19 sieve holes of the second sieve plate are screened out.
Open valve 6 at the screening in-process, control electric telescopic handle 8 drives the brush and stretches into screening jar 1 in through clearance mouth 102, starts clearance motor 9, and the brush reciprocating rotation clears up 19 sieve meshes of sieve.
Claims (9)
1. A cimetidine tablet screening process is characterized in that: the method comprises the following steps:
(1) the first screening tank is driven by a driving mechanism to rotate around the central shaft of the first screening tank, small particle impurities smaller than the mesh aperture of the first screen plate and cimetidine slices meeting the standard fall into a receiving tank below, and large particle impurities larger than the mesh aperture of the first screen plate are screened out;
(2) fine screening, namely pouring the raw materials of the material receiving tank in the step (1) into a second screening tank from a feed inlet of the second screening tank, wherein the second screening tank can rotate around a central shaft of the second screening tank in a reciprocating manner in the second screening tank under the driving of a driving mechanism, and small-particle impurities smaller than the pore size of a second sieve plate are screened;
the pore diameter of the sieve pore of the first sieve plate is larger than the size of the cimetidine tablet meeting the standard; the second sieve plate has a sieve pore size smaller than the standard cimetidine tablet size.
2. A screening apparatus for cimetidine tablet screening process as claimed in claim 1, wherein: comprises a screening tank, a screening groove, a driving mechanism and a cleaning assembly; the screening tank can rotate in a reciprocating manner around a central shaft of the screening tank in the screening tank under the driving of the driving mechanism; an opening I is formed in the bottom of the screening tank, and a screen plate is detachably connected to the opening I; the upper end surface of the screening tank is respectively provided with a feed inlet and a cleaning port, and the lower end surface of the screening tank is provided with a discharge outlet; the cleaning assembly can enter the cleaning port of the screening tank to do rotary reciprocating motion in the screening tank or exit the cleaning port; when the cleaning assembly rotates in the screening groove, the cleaning assembly is abutted to the screening plate.
3. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: the screening equipment further comprises a turntable, a worm and a moving block; the screening groove is disc-shaped, and an opening I at the bottom of the screening groove is circular and coaxial with the screening groove; a circle of limiting plate extends from the opening I to the interior of the screening groove; a fixed ring is inscribed in the screening groove, and a plurality of through grooves are uniformly distributed on the fixed ring along the radial direction; the rotary disc is matched with the inner wall of the screening groove; a through hole is formed in the center of the rotary table, and a circle of circular-ring-shaped bulge matched with the outer wall of the limiting plate is downwards arranged at the through hole; the annular bulge is sleeved on the outer wall of the limiting plate, and part of worm gear teeth are arranged on the outer wall of the annular bulge; two ends of the worm are respectively and rotatably connected with the inner wall of the screening groove, and the worm is meshed with the worm wheel; a plurality of arc-shaped grooves are uniformly distributed on the upper end surface of the rotary table along the central shaft of the rotary table; the number of the moving blocks is multiple; the moving blocks are arranged in the through grooves of the corresponding fixed circular rings, and sliding blocks matched with the arc-shaped grooves of the corresponding rotary discs are arranged below the moving blocks; each sliding block is arranged in the corresponding arc-shaped groove of the rotating disc and can move along the arc-shaped groove; one end of each moving block, which is close to the circle center, is provided with a clamping plate for clamping the sieve plate.
4. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: the screening equipment further comprises an electric telescopic rod; a valve is arranged at the cleaning port; one end of the electric telescopic rod can rotate in the screening groove along the center of the screening groove through the motor drive, and the other end of the electric telescopic rod is fixedly connected with the cleaning assembly.
5. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: the cleaning assembly adopts a hairbrush.
6. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: the driving mechanism comprises a connecting ring, a driving handle, two driven handles and three connecting rods; one ends of the driving handle and the two driven handles are respectively and rotatably connected with the bottom surface inside the screening tank and are uniformly distributed along the central shaft of the screening tank; the other ends of the driving handle and the two driven handles are respectively and rotatably connected with one end of the corresponding connecting rod; the other ends of the three connecting rods are respectively fixedly connected with the outer side wall of the connecting ring; the screening groove is detachably installed on the inner wall of the connecting frame.
7. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: the screening equipment also comprises a feeding hose and a feeding frame; the feeding frame is detachably and internally connected in the screening tank and above the screen plate; one end of the feeding hose is connected with a feeding port of the screening tank, and the other end of the feeding hose is connected with the center of the feeding frame.
8. The screening apparatus for cimetidine tablet screening process as claimed in claim 3, wherein: the inner hole of the fixed circular ring, the through hole of the rotary disc and the opening I of the screening groove have the same aperture; the sieve plate can cover the inner hole of the fixed circular ring completely, and the lower end face of the sieve plate is abutted to the upper end face of the fixed circular ring.
9. The screening apparatus for cimetidine tablet screening process as claimed in claim 2, wherein: screening jar lateral wall is equipped with opening II, and II departments of opening are equipped with the jar door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476898.XA CN113275232A (en) | 2021-04-29 | 2021-04-29 | Cimetidine tablet screening process and equipment |
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