CN112577275A - Clean workbench for drying medical high polymer materials - Google Patents
Clean workbench for drying medical high polymer materials Download PDFInfo
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- CN112577275A CN112577275A CN202011192598.0A CN202011192598A CN112577275A CN 112577275 A CN112577275 A CN 112577275A CN 202011192598 A CN202011192598 A CN 202011192598A CN 112577275 A CN112577275 A CN 112577275A
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- box body
- sealing plate
- box
- filter
- drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultra-violet radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention provides a clean workbench for drying medical high polymer materials. Clean workstation includes the box, locates inside the box and will the box inner space separates into the table surface of two upper and lower cavitys, locates in the cavity under the box and be used for to table surface reaches the high-pressure centrifugal fan of cavity air supply on the box, the top of cavity is equipped with the air outlet on the box, be equipped with a plurality of intercommunications on the table surface the first through-hole of two upper and lower cavitys of box, be equipped with the air intake under the box on the lateral wall of cavity, establish first filter on the air intake on the lateral wall of cavity under the box, be equipped with the second filter on the air outlet at cavity top on the box. The invention can blow dry the material quickly and uniformly in clean working environment and normal temperature, avoids the problem that the material performance is damaged by heat or the drying efficiency is low due to a common drying device, and can ensure that the blown cotton-like or fibrous material has fluffy effect.
Description
Technical Field
The invention relates to the technical field of clean drying, in particular to a clean workbench for drying medical high polymer materials.
Background
The medical polymer material is used for manufacturing human internal organs, external organs, drug dosage forms and medical appliances, and the source of the medical polymer material comprises natural biological polymer materials and synthetic biological polymer materials. The natural medical polymer material comes from nature and comprises cellulose, chitin, hyaluronic acid, collagen, gelatin, sodium alginate and the like; the synthetic medical high polymer material is artificially synthesized by a chemical method and is used for medical purposes, and currently, polyurethane, silicon rubber, polyester fiber, polyvinylpyrrolidone, polyether-ether-ketone, polymethyl methacrylate, polyvinyl alcohol, polylactic acid and polyethylene are commonly used. Medical materials can be used after being purified and dried, a traditional drying device is generally hot air drying equipment, however, for part of medical high polymer materials, the performance of the materials can be influenced by heating, and due to the characteristics of medical application, the traditional drying device cannot meet the requirements because the drying process and the dried materials have enough cleanliness.
In the existing clean bench, because the ventilation design of the clean bench is mainly used for air circulation, the adopted fan is usually low in wind power and generally has no function of drying materials, and particularly cannot be used for drying materials with high water content. The existing clean workbench is mainly suitable for scientific research or quality detection departments which need local clean and sterile working environments, such as medicine and health, biological pharmacy, food, medical science experiments, optical, electronic, sterile laboratory experiments, sterile microorganism inspection, plant tissue culture inoculation and the like.
In addition, the clean bench in the prior art mainly comprises a vertical flow (top-down) bench, a horizontal flow bench, a vertical flow (top-down) internal circulation bench and a horizontal flow internal circulation bench. For the vertical flow (from top to bottom) workbench, as described in chinese patent CN209109211U, the fan is located above the workbench, and blows air vertically from top to bottom to dry the surface of the workbench at normal temperature. For medical high polymer materials with high cleanliness requirements, if the medical high polymer materials are blown on an existing vertical flow (from top to bottom) clean workbench, the blowing efficiency is low or even the effect of blowing cannot be achieved by blowing from top to bottom; especially for the medical material of cotton wool shape or fibrous, can make the material blow more solid, appear the surface easily and weather, and the bottom is very wet, weathers inhomogeneous phenomenon, even through weather for a long time after, also can lead to the whole reunion of material closely knit, does not utilize the subsequent processing of material.
Disclosure of Invention
The invention provides a clean workbench for drying medical high polymer materials, aiming at overcoming the technical problems that the performance of the materials is damaged by heating due to the rapid drying of the medical high polymer materials and the medical materials are rapidly dried in a clean environment without affecting the performance of the materials. The invention can blow dry the material quickly and uniformly in clean working environment and normal temperature, avoids the problems of thermal damage to the performance of the medical polymer material or poor drying effect and low drying efficiency caused by the conventional common drying device, and can ensure that the blown or fibrous medical material has fluffy effect.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a clean bench for dry medical macromolecular material, wherein, includes the box, locates inside the box and will the box inner space separates into about two cavitys table surface, locates in the cavity under the box and be used for to table surface reaches the high-pressure centrifugal fan of cavity air supply on the box, the top of cavity is equipped with the air outlet on the box, table surface is last to be equipped with a plurality of intercommunications the first through-hole of two cavitys about the box, be equipped with the air intake under the box on the lateral wall of cavity, establish first filter under the box on the air intake on the lateral wall of cavity, be equipped with the second filter on the air outlet at cavity top on the box. Thus, the side wall of the cavity on the working table surface and the box body forms a clean working area; the high-pressure centrifugal fan sucks external air in the lower cavity of the box body through the air inlet, blows the air through the worktable surface, enters the upper cavity of the box body and is finally discharged from the air outlet; in clean work area, the material is placed on table surface, and the wind direction is for blowing from bottom to top, is favorable to offsetting material self action of gravity for the material can not be because of the further compaction of stack of wind-force and gravity drying process. The first filter can guarantee that the strong wind entering the working table surface is clean wind, and the second filter can prevent external pollutants from entering the box body. In the invention, the outer dimension of the clean bench is 1500mm × 720mm × 1800mm, the size of the bench surface is about 1400mm × 510mm × 40mm, and the upper air outlet can be a plate with a ventilation function.
In the invention, two high-power high-pressure centrifugal fans are preferably selected as the high-pressure centrifugal fan below the working table, the power of the high-power centrifugal fans is 1.5kW to 3kW, impellers of the high-power centrifugal fans are made of stainless steel materials, and the outlet installation angle of each blade is 20 degrees to 30 degrees. Under the condition that the power of a common centrifugal fan is certain, such as 2.5kW, in order to ensure that the air quantity is enough to dry materials, the air pressure is lower and the materials are difficult to penetrate through the first clean filter, the centrifugal fan with the improved impeller structure has a higher air pressure range which can reach 500Pa under the same power, and meanwhile, the air quantity is ensured to be 1300-1500 m3The air pressure and the air quantity are higher after the air passes through the first filter. Furthermore, the high-pressure centrifugal fan is controlled by a frequency converter, the wind speed of the high-pressure centrifugal fan can be adjusted, and the range of the used wind speed is 10-15 m/s.
Furthermore, an interlayer framework is arranged below the working table top, two or more layers of stainless steel plates with uniform second through holes are arranged on the interlayer framework, and the second through holes between every two adjacent layers are staggered. The interlayer framework plays a role of a pressure equalizing air plate, divergent strong wind blown out from the high-pressure centrifugal fan forms upward vertical flow after passing through the interlayer framework, and further reaches balanced clean wind in the vertical direction after passing through the first through hole of the working table, and the balanced clean wind is uniform clean wind with equivalent wind power at each position of the same plane in the box body.
Further, first filter and second filter are plate filter, first filter has double-deck plate structure, double-deck plate structure is from the outside to the inboard combination that is just imitated filter and medium efficiency filter, the filter media of medium efficiency filter is folding stainless steel wire net, and stainless steel wire diameter is 1 +/-0.2 mu m, and the stainless steel wire net mesh number is 18000 +/-2000 mesh, and 2-3 layers are folding together, and the groove depth of rolling over is 65mm ~ 80mm, and the groove top interval of rolling over is 8mm ~ 12 mm.
The first filter customized in this way can bear a large wind pressure, the wind resistance of the first filter is small, the wind pressure after passing through the filter is more than 300Pa, and the wind volume can reach 1000m3More than h and better filtering effect, and the filtering efficiency is more than 99% and more than E more than 70% for the particles with the particle size of more than or equal to 1 mu m.
Furthermore, one side of the lower cavity of the box body close to the operator is provided with a first sealing plate, one side opposite to the first sealing plate is provided with a second sealing plate, and the air inlet is formed in the first sealing plate and the second sealing plate.
Further, be equipped with the orientation on the first shrouding the return air tripe in the cavity outside under the box, the opening orientation of return air tripe the box top, be equipped with the plane opening on the second shrouding, be equipped with the opening orientation on the surface of second shrouding the box top just can cover the guiding gutter of whole second shrouding, the air intake is the opening of the return air tripe on the first shrouding and the plane opening on the second shrouding. First shrouding and second shrouding are inboard the position that the air intake corresponds is equipped with dry filter equipment, and further the air of dry entering workstation to have better air-dry efficiency. Opening of air return shutter of first sealing plate faces to boxSet up the guiding gutter that the opening just can cover whole second shrouding towards the box top on body top and the second shrouding and can prevent that subaerial particulate matter from being inhaled, destroys first shrouding, second shrouding and inboard first filter, prevents to pollute the material. The aperture of the air return shutter of the first sealing plate is 8-12 mm, and the mesh number is (800-1500)/m2The air suction requirement of the high-power high-pressure centrifugal fan can be met, the aperture is too small or the whole porosity is small, and the unit air suction quantity is insufficient; the bigger and sparser the aperture, the easier the sealing plate is deformed, the cleaning effect is reduced, the risk that larger foreign matters are sucked is more easily caused, and the service life of the internal structure is shortened. The aperture of the plane opening of the second sealing plate is 35mm-80mm, and the mesh number is (200-600)/m2The design of plane opening is than the design of return air tripe and can increase the amount of wind, but because its powerful suction, so must add the guiding gutter on the second shrouding, the guiding gutter section is the trapezium structure, and wherein, trapezoidal long limit is hugged closely with the second shrouding, is 1400mm, and the minor face aligns with second shrouding top, is about 500mm, and trapezoidal height is apart from the distance of second shrouding promptly, is 200 mm. Considering the requirement of amount of wind, first shrouding also can adopt the design of second shrouding, but sets up the guiding gutter in clean bench one side near operating personnel, and its outstanding structure is unfavorable for operating personnel to use this equipment.
In the invention, the first sealing plate and the second sealing plate are both in an upward air suction design, namely, air blown out by the powerful high-pressure centrifugal fan passes through the inside of the clean bench and penetrates out of the upper part of the box body, and the air return shutter with an upward opening and the guide groove are designed to ensure that the high-pressure centrifugal fan sucks the air flow at the upper half part of the clean bench back to form inverted cone air flow circulation. Because of the deposition of particles in the air, the particles in the bottom air are more, and the upward suction design can be beneficial to utilize cleaner parts in the air.
Further, a rotary drum device is further arranged in the upper cavity of the box body and comprises a rotary drum motor and a rotary drum, the rotary drum motor is installed on the working table surface, the rotary drum is connected to an output shaft of the rotary drum motor, and the circumferential side wall of the rotary drum is provided with a rotary drumAn access door and a plurality of third through holes are arranged. The drum motor drives the drum to slowly rotate at a constant speed, so that cotton wool in the drum can be uniformly blown and dried. The aperture of the third through hole is 5 mm-10 mm, and the mesh number is (3000-4000)/m2Preferably, the pore diameter is 8mm, and the mesh number is 3500/m2The inner wall of the rotary drum is smooth, and medical materials are placed into the rotary drum by opening the access door of the rotary drum and are uniformly dried in the rotation process.
Furthermore, an ultraviolet lamp is further arranged in the upper cavity of the box body, and the medical materials can be comprehensively sterilized while being dried.
Furthermore, a movable door is arranged on the side wall of the cavity on the box body, and the movable door can facilitate taking and placing of materials and maintenance of a daily working table. The dodge gate can be designed into upper and lower dodge gate, push-and-pull door, upset door etc. and the dodge gate material is preferred glass to observe the air-dried state of material. The bottom of the box body is provided with a lockable universal wheel and a caster wheel, so that the whole clean workbench can be conveniently moved.
Further, the medical polymer material is a cotton-wool-shaped or fibrous material.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a novel drying device suitable for medical polymer materials, which can be used for quickly and uniformly drying materials in a clean working environment at normal temperature, and solves the problems of thermal damage to material performance or poor drying effect and low efficiency caused by a common drying device. According to the fan and the filtering system of the clean workbench, and the high-pressure centrifugal fan is matched with the metal wire mesh filter, the air pressure and the air quantity of the air discharged from the clean workbench are increased, and the normal-temperature drying function is achieved; locate table surface below with high-pressure centrifugal fan, the material is placed on the workstation, and the wind direction is for blowing from bottom to top, is favorable to offsetting material self action of gravity for the material can not be because of the further compaction of the stack of wind-force and gravity drying process, and the material is inside can fully dry.
In addition, the upward air suction design of the air return louver and the guide groove is favorable for protecting the high-pressure centrifugal fan component and the filtering system of the clean workbench, and the mistaken suction of fine objects can be prevented.
For cotton wadding or fibrous materials, the air direction is from bottom to top, and the design of the rotary drum is matched, so that the fluffy effect can be further achieved, and the subsequent process treatment is convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a cross-sectional view at a-a in fig. 1.
Fig. 3 is a schematic structural view of the guide channels of the present invention.
Fig. 4 is a schematic view of the structure of the first filter in the thickness direction in the present invention.
FIG. 5 is a schematic structural diagram of a sandwich structure according to the present invention
In the figure, 1-a box body, 2-a workbench surface, 3-a high-pressure centrifugal fan, 4-a first sealing plate, 5-an air return louver, 6-a diversion trench, 7-a rotary drum motor, 8-a rotary drum, 9-an access door, 10-a universal wheel, 11-a caster wheel, 12-a second through hole, 101-a first filter and 102-a second filter;
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1 and 2, a clean bench for drying medical polymer materials, wherein, including box 1, locate 1 inside of box and will 1 internal space of box separates into about two cavitys table surface 2, locates in 1 lower cavity of box and be used for to table surface 2 reaches the high pressure centrifugal fan 3 of cavity air supply on 1 box, the top of cavity is equipped with the air outlet on 1 box, be equipped with a plurality of intercommunications on the table surface 2 the first through-hole of two cavitys about 1 box, be equipped with the air intake on 1 lower cavity of box's the lateral wall, establish first filter 101 on the air intake on 1 lower cavity of box's the lateral wall, be equipped with second filter 102 on 1 box's the air outlet at cavity top. Thus, the side walls of the cavity on the working table surface 2 and the box body 1 form a clean working area; the high-pressure centrifugal fan 3 sucks external air in the lower cavity of the box body 1 through the air inlet, blows the air through the worktable 2, enters the upper cavity of the box body 1 and is finally discharged from the air outlet; in clean work area, the material is placed on table surface 2, and the wind direction is for blowing from bottom to top, is favorable to offsetting material self action of gravity for the material can not be because of the further compaction of stack of wind-force and gravity drying process. The drying agent can be suitable for drying common medical polymer materials, and is particularly suitable for drying cotton-shaped or fibrous medical materials. The first filter 101 can ensure that the strong wind entering the working table 2 is clean wind, and the second filter 102 can prevent external pollutants from entering the box body 1. In the invention, the outer dimension of the clean bench is 1500mm × 720mm × 1800mm, the size of the bench surface 2 is about 1400mm × 510mm × 40mm, and the upper air outlet can be a plate with a ventilation function.
In the embodiment, two high-power high-pressure centrifugal fans 3 are preferably selected from the high-pressure centrifugal fan 3 below the working table surface 2, the power of the high-pressure centrifugal fan 3 is 1.5kW to 3kW, impellers of the high-pressure centrifugal fan 3 are customized by stainless steel materials, the outlet installation angle of each blade is 20 degrees to 30 degrees, the wind pressure of the fan with the improved impeller structure is 500Pa, and the wind volume is 1300 m to 1500m3H is used as the reference value. The high-pressure centrifugal fan 3 is controlled by a frequency converter, the wind speed can be adjusted, and the range of the used wind speed is 10-15 m/s.
In this embodiment, an interlayer framework is arranged below the working table top 2, as shown in fig. 5, two or more layers of stainless steel plates with uniform second through holes 12 are arranged on the interlayer framework, and the second through holes 12 between two adjacent layers are staggered. The interlayer framework plays a role of a pressure equalizing air plate, divergent strong wind blown out from the high-pressure centrifugal fan 3 forms upward vertical flow after passing through the interlayer framework, and further reaches balanced clean wind in the vertical direction after passing through the first through hole of the working table surface 2, and the balanced clean wind is uniform clean wind with equivalent wind power at each position of the same plane in the box body.
In this embodiment, the first filter 101 and the second filter 102 are plate filters, as shown in fig. 4, the first filter 101 has a double-layer plate structure, the double-layer plate structure is a combination of a primary filter and a middle filter from the outer side to the inner side, the filter material of the middle filter is a folded stainless steel wire mesh, the depth of the folding groove is 65mm to 80mm, and the distance between the tops of the folding grooves is 8mm to 10 mm. The first filter 101 customized in this way can bear a large wind pressure, and the wind resistance of the first filter 101 customized in this way is small, so that the wind pressure after passing through the first filter 101 is more than 300Pa, and the wind volume can reach 1000m3More than h and better filtering effect, and the filtering efficiency is more than 99% and more than E more than 70% for the particles with the particle size of more than or equal to 1 mu m. .
As shown in fig. 1 and 2, a first sealing plate 4 is arranged on one side of the lower cavity of the box body 1 close to an operator, a second sealing plate is arranged on the side opposite to the first sealing plate 4, and the air inlet is formed in the first sealing plate 4 and the second sealing plate.
In this embodiment, be equipped with the orientation on the first shrouding 4 the return air tripe 5 in the cavity outside under the box 1, the opening orientation of return air tripe 5 the 1 top of box, be equipped with the plane opening on the second shrouding, be equipped with the opening orientation on the surface of second shrouding 1 top of box and can cover the guiding gutter 6 of whole second shrouding, the air intake is the opening of return air tripe 5 on the first shrouding 4 and the plane opening on the second shrouding. First shrouding 4 and second shrouding are inboard be in the position that the air intake corresponds is equipped with dry filter equipment, and further the air of dry entering workstation to have better air-dry efficiency. The opening of the return air louver 5 of the first sealing plate 4 is towards the top of the box body 1 and the guide groove 6 which is arranged on the second sealing plate and has an opening towards the top of the box body 1 and can cover the whole second sealing plate, so that particles on the ground can be prevented from being absorbed, the first sealing plate 4, the second sealing plate and the first filter on the inner side are damaged, and the materials are prevented from being polluted. The aperture of the opening of the air return louver 5 of the first seal plate 4 is 8mm-12mm, and the mesh number is 800-1500/m2The aperture of the plane opening of the second sealing plate is 35mm-80mm, and the mesh number is (200-600)/m2The equal first shrouding 4 of its aperture scope setting consideration, the design of plane opening ratio return air tripe 5 can increase the amount of wind, but because its powerful suction, so must add guiding gutter 6 on the second shrouding, the 6 sections of guiding gutter are the trapezium structure, and wherein, trapezoidal long limit is hugged closely with the second shrouding, is 1400mm, and the minor face aligns with the second shrouding top, is about 500mm, and trapezoidal height is apart from the distance of second shrouding promptly, is 200 mm. Considering the requirement of amount of wind, first shrouding 4 also can adopt the design of second shrouding, but sets up guiding gutter 6 in clean bench one side near operating personnel, and outstanding structure is unfavorable for operating personnel to use this equipment.
In this embodiment, first shrouding 4 and second shrouding are the design that upwards induced drafts, and the wind that also is blown out by powerful high-pressure centrifugal fan 3 wears out from box 1 top through clean bench is inside, and the ascending air return tripe of opening 5 and the design of guiding gutter 6 make high-pressure centrifugal fan 3 inhale the air current of clean bench first half department back, form the air current circulation of back taper. Because of the deposition of particles in the air, the particles in the bottom air are more, and the upward suction design can be beneficial to utilize cleaner parts in the air.
As shown in fig. 1 and 2, a drum 8 device is further arranged in the upper cavity of the box body 1, the drum 8 device comprises a drum motor 7 and a drum 8, the drum motor 7 is mounted on the working table 2, the drum 8 is connected to an output shaft of the drum motor 7, and an access door 9 and a plurality of third through holes are arranged on the circumferential side wall of the drum 8. The drum motor 7 drives the drum 8 to slowly rotate at a constant speed, so that the cotton wool inside the drum 8 can be uniformly blown and dried. The aperture of the third through hole is 8mm, and the mesh number is 3500/m2The inner wall of the rotary drum 8 is smooth, and materials are placed into the rotary drum 8 by opening the access door 9 of the rotary drum 8 and are uniformly blown and dried in the rotation process.
In this embodiment, an ultraviolet lamp is further disposed in the upper cavity of the box body 1, and the medical materials can be dried and sterilized comprehensively.
As shown in fig. 1 and 2, the bottom of the box body 1 is provided with lockable universal wheels 10 and caster wheels 11 to facilitate the movement of the whole clean bench. The side wall of the cavity on the box body is provided with a movable door, and the movable door can be used for facilitating taking and placing of materials and overhauling of the daily working table top 2. The dodge gate can be designed into upper and lower dodge gate, push-and-pull door, upset door etc. and the dodge gate material is preferred glass to observe the air-dried state of material.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A clean workbench for drying medical polymer materials is characterized by comprising a box body (1), a workbench surface (2) which is arranged in the box body (1) and divides the inner space of the box body (1) into an upper cavity and a lower cavity, a high-pressure centrifugal fan (3) which is arranged in the lower cavity of the box body (1) and is used for supplying air to the workbench surface (2) and the upper cavity of the box body (1), an air outlet is arranged at the top of the upper cavity of the box body (1), a plurality of first through holes communicated with the upper cavity and the lower cavity of the box body (1) are arranged on the working table surface (2), an air inlet is arranged on the side wall of the lower cavity of the box body (1), a first filter (101) is arranged on the air inlet on the side wall of the lower cavity of the box body (1), and a second filter (102) is arranged on an air outlet at the top of the upper cavity of the box body (1).
2. The clean bench for drying medical polymer materials according to claim 1, wherein the impeller of the high pressure centrifugal fan (3) is made of stainless steel material, and the outlet installation angle of the blade is 20-30 °.
3. The clean bench for drying medical polymer materials according to claim 2, wherein the first filter (101) and the second filter (102) are plate filters, the first filter (101) has a double-layer plate structure, the double-layer plate structure is a combination of a primary filter and a middle filter from the outside to the inside, the filter material of the middle filter is a folded stainless steel wire mesh, the depth of the folded grooves is 65 mm-80mm, and the distance between the tops of the folded grooves is 8mm-12 mm.
4. The clean bench for drying medical polymer materials according to claim 2, wherein an interlayer framework is arranged below the bench surface (2), the interlayer framework is provided with two or more layers of stainless steel plates with uniform second through holes (12), and the second through holes (12) between two adjacent layers are staggered.
5. The clean bench for drying polymer materials for medical use according to claim 1, wherein a first sealing plate (4) is provided at a side of the lower cavity of the box body (1) close to the operator, a second sealing plate is provided at a side opposite to the first sealing plate (4), and the air inlet is provided at the first sealing plate (4) and the second sealing plate.
6. The clean bench for drying medical polymer materials according to claim 5, wherein the first sealing plate (4) is provided with a return air louver (5) facing the outside of the lower cavity of the box body (1), the opening of the return air louver (5) faces the top of the box body (1), the second sealing plate is provided with a planar opening, the outer surface of the second sealing plate is provided with a diversion trench (6) having an opening facing the top of the box body (1) and capable of covering the whole second sealing plate, and the air inlet is the opening of the return air louver (5) on the first sealing plate (4) and the planar opening on the second sealing plate.
7. The clean bench for drying polymer materials for medical use according to claim 5 or 6, wherein the first sealing plate (4) and the second sealing plate are provided with a drying and filtering device at the inner side thereof corresponding to the air inlet.
8. The clean bench for drying medical polymer materials according to claim 1, wherein a drum device is further disposed in the upper cavity of the box body (1), the drum device comprises a drum motor (7) and a drum (8), the drum motor (7) is mounted on the working table top (2), the drum (8) is connected to an output shaft of the drum motor (7), and an access door (9) and a plurality of third through holes are disposed on a circumferential side wall of the drum (8).
9. The clean bench for drying polymer materials for medical use according to claim 1, wherein an ultraviolet lamp is further disposed in the upper cavity of the box body (1).
10. The clean bench for drying medical polymer material according to claim 1, wherein a movable door is arranged on the side wall of the upper cavity of the box body (1), and the bottom of the box body (1) is provided with a lockable universal wheel (10) and a caster wheel (11).
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| CN202011192598.0A CN112577275B (en) | 2020-10-30 | 2020-10-30 | Clean workbench for drying medical high polymer materials |
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