CN117101521B - Mixer for producing medical PVC material and mixing method thereof - Google Patents
Mixer for producing medical PVC material and mixing method thereof Download PDFInfo
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- CN117101521B CN117101521B CN202311366301.1A CN202311366301A CN117101521B CN 117101521 B CN117101521 B CN 117101521B CN 202311366301 A CN202311366301 A CN 202311366301A CN 117101521 B CN117101521 B CN 117101521B
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- 238000002156 mixing Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 136
- 239000000843 powder Substances 0.000 claims abstract description 104
- 230000008569 process Effects 0.000 claims abstract description 26
- 239000000654 additive Substances 0.000 claims abstract description 21
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 239000004519 grease Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000001050 lubricating effect Effects 0.000 claims abstract description 9
- 238000007790 scraping Methods 0.000 claims description 43
- 238000001816 cooling Methods 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000007791 dehumidification Methods 0.000 claims description 11
- 238000007580 dry-mixing Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/95—Heating or cooling systems using heated or cooled stirrers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/98—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2202—Mixing compositions or mixers in the medical or veterinary field
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
Abstract
The invention relates to the technical field of PVC material mixers, in particular to a mixer for producing medical PVC materials and a mixing method thereof. The technical problems to be solved are as follows: in the PVC powder hot mixing process, workers cannot observe the mixing state of the PVC powder in time, the production quality of the PVC powder is affected, lubricating grease is solidified on the stirring blade due to high friction temperature, a hard skin layer is formed, the lubricating grease falls off in the subsequent mixing process, and particles are generated to cause surface defects of products. The technical implementation scheme of the invention is as follows: a mixer for producing medical PVC materials comprises a mixer, a cylinder and the like; the mixer is provided with a cylinder. According to the invention, the PVC powder is pumped into the sampling vessel through the sampling tube, so that a worker can observe the mixing state of the PVC powder and the additive conveniently under the condition that the equipment is not stopped, the unstable product performance caused by uneven mixing of the additive and the PVC powder is prevented, and the product quality is reduced.
Description
Technical Field
The invention relates to the technical field of PVC material mixers, in particular to a mixer for producing medical PVC materials and a mixing method thereof.
Background
According to the chinese patent of application number CN 202211525647.7: a be used for PVC masterbatch's mixer, this patent is realized through mixing tank and mixing hammer to the piece in the inside material of mixing tank by the air current drive with the material carry out intensive mixing, the problem of its inside a large amount of piece that produce when having solved original PVC material and mixing has improved the quality of the device ejection of compact PVC material, however, the dispersion devices of this equipment does not consider the problem that PVC powder mixing in-process workman can't pay attention to PVC material misce bene degree constantly, in the current PVC powder mixing in-process, put into the mixer with PVC powder and other additives and carry out the dry mixing, the material after the dry mixing is heated and mixed afterwards. The purpose of heating is to soften the PVC powder, makes it can fuse together with other additives better, and medical grade additive more needs to mix with the PVC powder is intensive mixing, and the PVC powder that heats in mixing exists the inhomogeneous condition of mixing with the additive, because current equipment lacks the function of real-time supervision PVC powder's mixed state, leads to the workman to can not in time observe the mixed state of PVC powder and make corresponding adjustment to influence the production quality of PVC powder.
The PVC powder needs good fluidity during the hot mixing process to ensure that the additives and PVC powder can be uniformly dispersed throughout the system. The prior art uses lubricating grease to reduce the viscosity of PVC powder, improve the fluidity of the PVC powder, and enable the PVC powder to be mixed with additives more easily, but the lubricating grease particles are thinner and high polymers with lower melting points, can be solidified on stirring blades due to higher friction temperature, form a hard skin layer, fall off in the subsequent mixing process, and generate particles to cause surface defects of products.
Disclosure of Invention
The invention provides a mixer for producing medical PVC materials and a mixing method thereof, aiming at overcoming the defects that in the hot mixing process of PVC powder, workers cannot observe the mixing state of the PVC powder in time, the production quality of the PVC powder is affected, lubricating grease is solidified on a stirring blade due to higher friction temperature, a hard skin layer is formed, the lubricating grease falls off in the subsequent mixing process, and particles are generated to cause surface defects of products.
The technical implementation scheme of the invention is as follows: a mixer for producing medical PVC materials comprises a mixer, a cylinder cover and a stirrer; the mixer is provided with a cylinder; a cylinder cover is movably connected to the cylinder body; the lower part of the inner side of the cylinder body is movably connected with a stirrer; the system also comprises a sampling column, a supporting column, a sampler, a sampling assembly, an overheat prevention system and a dehumidification system; the stirrer is provided with a sampling column; the upper side of the sampling column is movably connected with a support column; the support column is movably connected with a sampler for sampling the caked PVC powder; the gap between the opening at the lower side of the sampler and the support column is a sampling port; the sampler is movably connected with the cylinder cover; the sampler is provided with a sampling component for sampling PVC powder; the support column is provided with an overheat preventing system for preventing the stirrer from overheat; the inside of the sampler is provided with a dehumidification system for separating moisture in PVC powder.
More preferably, the sampling assembly comprises an air bag, a scraper, a diaphragm, a first supporting block, a sampling tube and a second supporting block; an air bag is fixedly connected to the lower side of the sampler; the left side of the sampler is provided with a ventilation groove; the lower side of the ventilation groove is communicated with the air bag; the inner side of the air bag is annularly provided with a plurality of scrapers for scraping the solidified matters on the surface of the sampling column; a sampling cavity for collecting PVC powder is arranged in the support column; the lower part of the support column is annularly provided with a plurality of diaphragms; each diaphragm is positioned outside the sampling cavity; an air channel is formed between the sampler and the support column; a first supporting block is arranged above the cylinder cover; the first support block is fixedly connected with the upper side of the support column; a sampling tube is fixedly connected inside the support column; the lower side of the sampling tube is communicated with the sampling cavity; the upper side of the sampler is fixedly connected with a plurality of second supporting blocks which are symmetrical back and forth.
More preferably, the device also comprises a deflector rod; the lower side of the air bag is fixedly connected with a plurality of deflector rods for crushing massive PVC powder.
More preferably, the inner top wall of the sampling cavity is inclined, and the highest position is positioned at the communication position of the sampling tube and the sampling cavity.
More preferably, the overheat preventing system comprises an air inlet pipe, a cooling pipe, a return pipe and an air outlet pipe; an air inlet pipe is fixedly connected inside the support column; a cold air groove is formed in the sampling column; when the support column is connected with the sampling column, the air inlet pipe is communicated with the cold air tank; a cold air cavity is formed in the stirrer; a first reflux cavity is formed in the stirrer; the lower side of the support column is provided with a second reflux cavity; a cooling pipe for preventing lubricating grease from caking is fixedly connected inside each blade on the stirrer; an air inlet end is arranged on each cooling pipe; each cooling pipe is provided with an air outlet end; each air inlet end is communicated with the cold air cavity; each air outlet end is communicated with the first backflow cavity; a return pipe is fixedly connected inside the sampling column; the lower end of the return pipe is communicated with the first return cavity; the upper end of the return pipe is communicated with the second return cavity; an air outlet pipe is fixedly connected inside the support column; the lower end of the air outlet pipe is communicated with the second reflux cavity; the upper end of the air outlet pipe penetrates through the supporting column and is communicated with the outside.
More preferably, the return pipe is provided in a spiral shape.
More preferably, the dehumidification system comprises a scraping ring, a first limiting ring, a second limiting ring, a shifting block, a scraping block, a guiding block, a sponge and a squeezing strip; the lower end of the support column is fixedly connected with a scraping ring; the lower part of the support column is fixedly connected with a first limiting ring which is positioned above the scraping ring; the upper part of the inner side of the sampler is fixedly connected with a second limiting ring; a plurality of first vent holes are formed in the first limiting ring in an annular mode; a plurality of second vent holes are formed in the second limiting ring in an annular mode, and the first vent holes and the second vent holes are arranged in a staggered mode; the middle part of the inner side of the sampler is annularly provided with a plurality of poking blocks; the upper side of the scraping ring is provided with a plurality of scraping blocks in a ring array; the scraping ring is provided with a plurality of guide blocks in an annular array; every two adjacent guide blocks are fixedly connected with the adjacent scraping blocks, and the two guide blocks are symmetrically arranged by taking the central axis of the scraping block as a reference; the upper side of each guide block is provided with a guide groove; a plurality of sponges are arranged on the scraping ring in an annular array; the scraping ring is provided with a plurality of extrusion strips in an annular array; each extrusion strip is in sliding connection with two adjacent guide blocks; each sponge is positioned at the outer side of the adjacent extrusion strip by taking the central point of the scraping ring as a reference; a plurality of drainage grooves are formed in the annular array on the sampler; each drainage channel is positioned outside the adjacent sponge.
More preferably, the dehumidification system further comprises a dredging rod; a plurality of dredging rods are arranged on the annular array at the lower side of the second limiting ring; each dredging rod is arranged in a dislocation way with a second ventilation hole on the second limiting ring; each dredging rod is positioned on the same vertical line with the corresponding second ventilation hole on the first limiting ring.
More preferably, the first limiting ring is arranged in a downward inclined shape from the outer side of the sampler to the center point of the sampling column.
The mixing method for producing the medical PVC material comprises the following working steps:
s1: dry-mixing, namely placing the prepared PVC powder and the additive into a cylinder for dry-mixing;
s2: heating the mixed raw materials to a specific temperature according to specific process requirements, and melting the mixed raw materials into uniform paste;
s3: sampling, namely performing targeted sampling on the mixture of the PVC powder and the additive in the cylinder in the mixing process;
s4: and (3) performing technical adjustment, namely performing corresponding adjustment on the rotating speed and the heating temperature of the stirrer according to the sampling data after the sampling data are obtained.
Compared with the prior art, the invention has the following advantages: according to the invention, the PVC powder is extracted into the sampling vessel through the sampling tube, so that a worker can observe the mixing state of the PVC powder and the additive conveniently under the condition that the equipment is not stopped, the unstable product performance caused by uneven mixing of the additive and the PVC powder is prevented, and the product quality is reduced;
the PVC powder is agglomerated and pumped out to an external sampling vessel through the sampling tube, so that a worker can observe the agglomeration state of the PVC powder conveniently, the PVC powder is prevented from being agglomerated seriously, the PVC powder is prevented from falling off in the later mixing process, and particles are generated to cause surface defects of products;
the heat on the adjacent blades is taken away by the cool air in the cooling pipe, so that the surface of the stirrer is prevented from being overheated, grease is solidified on the surface of the stirrer to form caking, the caking after the solidification of the grease is caused to fall into PVC powder in the mixing process, and the production quality of products is reduced;
the sponge is used for scraping the water vapor on the inner wall of the sampler, so that the water vapor is prevented from being adhered to the sampled PVC powder, and the accuracy of the sampled data is prevented from being influenced;
after the first limiting ring and the second limiting ring are attached, the ventilating duct is divided into an upper region and a lower region, the lower region of the ventilating duct is isolated from the outside, PVC powder is prevented from entering the outside through the ventilating duct, the loss of the PVC powder is caused, and the production quality is affected.
Drawings
FIG. 1 is a schematic perspective view of a first embodiment of the present invention;
FIG. 2 is a schematic view of a second perspective structure of the present invention;
FIG. 3 is a schematic perspective view of the combination of the stirrer, the sampling column and the sampler of the present invention;
FIG. 4 is a cross-sectional view of a first combination of a sampler and a balloon of the present invention;
FIG. 5 is a cross-sectional view of a support column, sampler and bladder combination of the present invention;
FIG. 6 is an enlarged view of the area A of FIG. 5 in accordance with the present invention;
FIG. 7 is a cross-sectional view of a second combination of the sampler and balloon of the present invention;
FIG. 8 is an enlarged view of the area B of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic diagram of a first perspective view of an overheat protection system according to the present invention;
FIG. 10 is a schematic diagram of a second perspective view of the overheat protection system according to the present invention;
FIG. 11 is a sectional view of a combination agitator and anti-overheating system of the invention;
FIG. 12 is a schematic view showing a first combined perspective structure of the scraper ring, the first stop ring and the second stop ring according to the present invention;
FIG. 13 is a schematic view showing a second combined perspective structure of the scraper ring, the first stop ring and the second stop ring according to the present invention;
FIG. 14 is a schematic view showing a combined three-dimensional structure of a first stop collar and a second stop collar according to the present invention;
FIG. 15 is a schematic perspective view of a wiper ring and dial combination according to the present invention;
fig. 16 is a schematic view showing a partial perspective structure of the dehumidifying system of the present invention.
The marks of the components in the drawings are as follows: 1-mixer, 2-barrel, 3-cover, 4-stirrer, 4001-cold air chamber, 4002-first backflow chamber, 5-sampling column, 5001-cold air tank, 6-support column, 6001-sampling chamber, 6002-second backflow chamber, 7-sampler, 7001-vent tank, 7002-vent channel, 7003-drain tank, 101-air bag, 102-scraper, 103-deflector rod, 104-diaphragm, 105-first support block, 106-sampling tube, 107-second support block, 201-air inlet tube, 202-cooling tube, 20201-air inlet end, 20202-air outlet end, 203-backflow tube, 204-air outlet tube, 301-scraper ring, 302-first limit ring, 30201-first vent hole, 303-second limit ring, 30301-second vent hole, 304-deflector block, 305-scraper block, 306-deflector block, 3001-guide groove, 307-sponge, 308-strip, 309-screw rod, 401-driver, 402-motor-driver.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: as shown in fig. 3-8, a mixer for producing medical PVC materials comprises a mixer 1, a cylinder 2, a cylinder cover 3 and a stirrer 4; the mixer 1 is provided with a cylinder 2; a cylinder cover 3 is movably connected with the cylinder body 2; the lower part of the inner side of the cylinder 2 is movably connected with a stirrer 4; the lower end of the stirrer 4 is connected with the output end of an external motor through a belt pulley, so that the stirrer 4 is driven to rotate clockwise through controlling the motor driving belt pulley when seen from top to bottom;
the system also comprises a sampling column 5, a supporting column 6, a sampler 7, a sampling assembly, an overheat prevention system and a dehumidification system; the stirrer 4 is provided with a sampling column 5; the upper side of the sampling column 5 is movably connected with a support column 6; the supporting column 6 is movably connected with a sampler 7; the gap between the opening at the lower side of the sampler 7 and the support column 6 is a sampling port; the sampler 7 is movably connected with the cylinder cover 3; the sampling assembly is arranged on the sampler 7, the sampling assembly drives the sampler 7 to sample the PVC powder mixed in the cylinder 2 and the caking formed on the upper surface of the sampling column 5, and the real-time observation is carried out on the PVC powder mixed in the cylinder 2 and the caking formed on the upper surface of the sampling column 5, so that uneven mixing of additives and the PVC powder is prevented, unstable product performance is caused, and the product quality is reduced; the support column 6 is provided with an overheat prevention system, the overheat prevention system prevents the stirrer 4 from overheating, so that the lubricating grease is thermally melted and solidified on the surface of the stirrer 4 to form solid impurities, and the solid impurities fall off and are mixed into PVC powder in the PVC powder mixing process, so that the product quality is reduced; the dehumidification system is installed in the sampler 7, and certain water is required to be added for stirring in the PVC powder mixing process, so that before sampling, the water begins to gasify under the influence of temperature, water vapor is adhered to the inner wall of the sampler 7, and the data accuracy of subsequent sampling is affected.
The sampling assembly comprises a balloon 101, a scraper 102, a diaphragm 104, a first supporting block 105, a sampling tube 106 and a second supporting block 107; the lower side of the sampler 7 is fixedly connected with an air bag 101; the left side of the sampler 7 is provided with an air vent 7001; the upper side of the ventilation groove 7001 is externally connected with an inflator pump; the lower side of the ventilation groove 7001 is communicated with the air bag 101; a plurality of scrapers 102 are annularly arranged on the inner side of the air bag 101; a sampling cavity 6001 is arranged in the support column 6; four diaphragms 104 are arranged on the lower annular array of the support column 6; each diaphragm 104 is located outside the sampling chamber 6001; an air channel 7002 is formed between the sampler 7 and the support column 6; a first supporting block 105 is arranged above the cylinder cover 3; the first supporting block 105 is fixedly connected with the upper side of the supporting column 6, the supporting column 6 is driven to move upwards through the first supporting block 105, so that the supporting column 6 is separated from the sampling column 5, and then, the cylinder cover 3 is controlled to rotate anticlockwise by taking the front view and the back view as a benchmark, so that the cylinder cover 3 drives the supporting column 6 to rotate anticlockwise towards the outer side of the cylinder body 2, and the influence of the sampler 7 on the mixing work of PVC powder is avoided; a sampling tube 106 is fixedly connected inside the support column 6; the upper side of the sampling tube 106 is externally connected with an air pump, and the air pump is connected with a sampling dish; the lower side of the sampling tube 106 is communicated with a sampling cavity 6001; the second supporting shoe 107 of symmetry around 7 upside rigid couplings of sampler have two, take out the PVC powder to the sample dish through sampling pipe 106 in, make things convenient for the workman to observe the mixed state of PVC powder and additive, prevent that additive and PVC powder from mixing inhomogeneous reduction product quality, strike off the PVC powder caking on sampling post 5 surface through scraper 102, strike off the in-process of PVC powder caking at scraper 102, take out the PVC powder caking to external sample dish through sampling pipe 106 in, make things convenient for the workman to observe PVC powder caking mixed state, thereby in time adjust agitator 4 rotational speed, prevent that the PVC powder caking is serious, avoid PVC powder caking to drop in the mixed in-process afterwards, the production granule causes product surface defect.
The device also comprises a driving piece 401 and an electric screw 402; two driving pieces 401 which are symmetrical in front and back are fixedly connected to the upper side of the cylinder cover 3; the output ends of the two driving pieces 401 are fixedly connected with the lower side of the first supporting block 105, and the driving pieces 401 are push rods; two front-back symmetrical electric screw rods 402 are fixedly connected to the lower side of the first supporting block 105; each of the motorized lead screws 402 is rotatably coupled to an adjacent second support block 107.
A deflector rod 103 is also included; the air bag 101 downside rigid coupling has a plurality of driving lever 103, and the PVC powder that blocks the caking is broken through driving lever 103 and agitator 4 cooperation, prevents the PVC powder that blocks the caking from blockking up the sampling mouth of sampler 7 downside, influences sampling work and normally goes on.
The roof sets up to the slope form in the sampling chamber 6001, and the highest department is located sampling tube 106 and sampling chamber 6001 intercommunication department, at suction PVC powder in-process, directs the PVC powder through the sampling chamber 6001 that the slope set up, prevents that the PVC powder from remaining in sampling chamber 6001, influences the sampling data of next batch of PVC powder.
In the process of PVC material thermal mixing, in order to facilitate the observation of PVC powder by workers, the electric screw rod 402 is controlled to drive the adjacent second supporting blocks 107 to move downwards, so that the two second supporting blocks 107 simultaneously drive the sampler 7 to move downwards, the sampler 7 drives the air bag 101 to move towards the sampling column 5, part of PVC powder in the cylinder 2 enters the lower side of the air duct 7002 through the sampling port under the action of radial flow in the downward movement process of the sampler 7, and due to the phenomenon of agglomeration and agglomeration in the PVC powder mixing process, the PVC powder agglomerated by agglomeration is crushed by the cooperation of the deflector rod 103 and the stirrer 4, so that the sampling port on the lower side of the sampler 7 is blocked by the PVC powder agglomerated by agglomeration is prevented, and the sampling is abnormal, and the normal operation of the sampling is influenced; when the air bag 101 moves to the lower side of the sampling column 5, the air pump is started to enable the sampling tube 106 to generate suction force, the diaphragm 104 is opened to the middle of the sampling cavity 6001 under the action of the suction force, at the moment, PVC powder on the lower side of the ventilating duct 7002 enters the sampling cavity 6001 under the action of the suction force, then the PVC powder in the sampling cavity 6001 enters the sampling tube 106, the PVC powder is pumped into the sampling vessel through the sampling tube 106, and in a state that equipment is not stopped, workers can observe the mixing state of the PVC powder and the additive conveniently, the mixing of the additive and the PVC powder is prevented from being uneven, the product performance is unstable, and the product quality is reduced; after the PVC powder is taken away by a worker, the inflator pump is controlled to inflate the airbag 101 through the vent channel 7001, the gradually-inflated airbag 101 pushes the scraper 102 on the inner side of the inflator pump to be close to the center point of the sampling column 5, when the scraper 102 is attached to the surface of the sampling column 5, the sampler 7 is controlled by the electric screw 402 to drive the airbag 101 to move upwards, at this time, the scraper 102 is in a relatively static state by taking the top down as a reference, the sampling column 5 is in a clockwise rotation state along with the stirrer 4, PVC powder caking on the surface of the sampling column 5 is scraped by the scraper 102, the suction pump is started in the process of scraping the PVC powder caking by the scraper 102, suction is generated inside the sampling tube 106, the PVC powder caking is pumped into the sampling vessel through the sampling tube 106, the PVC powder caking state is conveniently observed by the worker, the PVC powder caking is prevented from being serious, and the quality of products is reduced.
Example 2: on the basis of embodiment 1, as shown in fig. 9 to 11, the overheating prevention system includes an intake pipe 201, a cooling pipe 202, a return pipe 203, and an outlet pipe 204; an air inlet pipe 201 is fixedly connected inside the support column 6; the upper side of the air inlet pipe 201 is externally connected with a refrigerating machine cold air port; a cold air groove 5001 is formed in the sampling column 5; when the support column 6 is connected with the sampling column 5, the air inlet pipe 201 is communicated with the cold air groove 5001; the stirrer 4 is internally provided with a cold air cavity 4001; the stirrer 4 is internally provided with a first backflow cavity 4002; a second reflow cavity 6002 is arranged at the lower side of the support column 6; a cooling pipe 202 is fixedly connected inside each blade on the stirrer 4; each cooling tube 202 is provided with an air inlet end 20201; an air outlet end 20202 is arranged on each cooling pipe 202; each air intake end 20201 communicates with the cold air chamber 4001; each outlet end 20202 communicates with the first reflow chamber 4002; a return pipe 203 is fixedly connected inside the sampling column 5; the lower end of the return pipe 203 is communicated with the first return chamber 4002; the upper end of the return pipe 203 is communicated with a second return cavity 6002; an air outlet pipe 204 is fixedly connected inside the support column 6; the lower end of the air outlet pipe 204 is communicated with a second backflow cavity 6002; the upper end of the air outlet pipe 204 penetrates through the supporting column 6 to be communicated with the outside, heat on adjacent blades is taken away through cold air in the cooling pipe 202, the surface of the stirrer 4 is prevented from being overheated, grease is prevented from being solidified on the surface of the stirrer 4 to form caking, and the production quality of products is reduced.
The back flow 203 sets up to be the heliciform, because the inside steam that produces of barrel 2 is stained with and is attached on the 5 surfaces of sampling post, leads to the caking on 5 surfaces of sampling post to soften, evenly conducts the inside steam to the 5 surfaces of sampling post through setting up the back flow 203 that is the heliciform, makes steam unable to be stained with and sample 5 surfaces of post, guarantees the normal clear of follow-up sampling work.
In the process of PVC material hot mixing, because grease and the agitator 4 generate heat through friction, and under the superposition of the internal heating effect of the barrel 2, grease is easy to solidify and form a lump on the surface of the agitator 4, cold air is conveyed to the air inlet pipe 201 through an external refrigerator, then, cold air in the air inlet pipe 201 enters the cold air cavity 4001 through the cold air groove 5001, meanwhile, cold air in the cold air cavity 4001 enters the adjacent cooling pipe 202 through the air inlet end 20201, heat on the adjacent blades is taken away through the cold air in the cooling pipe 202, at the moment, the cold air in the cooling pipe 202 is converted into hot air, the hot air enters the first backflow cavity 4002 through the adjacent air outlet end 20202, and then the hot air is conveyed to the backflow pipe 203 through the first backflow cavity 4002, and further, the hot air in the backflow pipe 203 is discharged to the outside through the air outlet pipe 204, so that the surface overheating of the agitator 4 is prevented, the cold air is solidified on the surface of the agitator 4 after the melting to form a lump, the lump is caused, the grease is dropped into PVC powder in the mixing process, and the production quality is reduced.
Example 3: on the basis of embodiment 1, as shown in fig. 1, 2 and 12-16, the dehumidification system comprises a scraping ring 301, a first limiting ring 302, a second limiting ring 303, a shifting block 304, a scraping block 305, a guide block 306, a sponge 307 and a squeezing strip 308; a scraping ring 301 is fixedly connected to the lower end of the supporting column 6; the lower part of the support column 6 is fixedly connected with a first limiting ring 302, and the first limiting ring 302 is positioned above the scraping ring 301; the upper part of the inner side of the sampler 7 is fixedly connected with a second limiting ring 303; a plurality of first vent holes 30201 are formed in the first limiting ring 302 in an annular mode; a plurality of second vent holes 30301 are annularly formed in the second limiting ring 303, and the first vent holes 30201 and the second vent holes 30301 are arranged in a staggered manner; four shifting blocks 304 are annularly arranged in the middle of the inner side of the sampler 7; four scraping blocks 305 are annularly arranged on the upper side of the scraping ring 301; the scraping ring 301 is provided with a plurality of guide blocks 306 in an annular array; each two adjacent guide blocks 306 are fixedly connected with the adjacent scraping blocks 305, and the two guide blocks 306 are symmetrically arranged by taking the central axis of the scraping block 305 as a reference; the upper side of each guide block 306 is provided with a guide groove 30401; four sponges 307 are annularly arranged on the scraping ring 301; the scraping ring 301 is provided with four extrusion strips 308 in an annular array; each extrusion bar 308 is slidably connected to two adjacent guide blocks 306; each sponge 307 is positioned outside the adjacent extrusion strip 308 with reference to the center point of the scraper ring 301; a plurality of drainage grooves 7003 are formed in the annular array on the sampler 7; each drainage groove 7003 is positioned at the outer side of the adjacent sponge 307, and the water vapor on the inner wall of the sampler 7 is scraped by the sponge 307, so that the water vapor is prevented from being adhered to PVC powder, and the accuracy of sampling data is prevented from being influenced; the adjacent sponge 307 is extruded by the extrusion strip 308, so that the moisture in the sponge 307 is discharged out of the sampler 7 through the adjacent drainage groove 7003, and the moisture is prevented from accumulating in the sponge 307, and the scraping of the sponge 307 on the water vapor on the inner wall of the sampler 7 is prevented; after the first limiting ring 302 is attached to the second limiting ring 303, the air duct 7002 is divided into an upper area and a lower area, so that the lower area of the air duct 7002 is isolated from the outside, PVC powder is prevented from entering the outside through the air duct 7002, the loss of the PVC powder is avoided, and the production quality is ensured.
The dehumidification system also includes a dredge bar 309; the lower side of the second limiting ring 303 is provided with a plurality of dredging rods 309 in an annular array; each dredging rod 309 is arranged in a staggered manner with the second ventilation holes 30301 on the second limiting ring 303; each of the dredging rods 309 is located on the same vertical line with the corresponding second ventilation hole 30301 on the first limiting ring 302, in the process of extracting the PVC powder caking, the PVC powder caking enters the first ventilation hole 30201 on the first limiting ring 302 under the irregular movement in the sampler 7, so that the PVC powder caking blocks the first ventilation hole 30201 on the first limiting ring 302, in the process of the sampler 7 driving the second limiting ring 303 to move downwards, the second limiting ring 303 drives the dredging rods 309 to move downwards, the dredging rods 309 are further inserted into the corresponding first ventilation holes 30201 on the first limiting ring 302, the PVC powder caking is pushed downwards, the first ventilation holes 30201 on the first limiting ring 302 are prevented from being blocked by the PVC powder caking, the reduction of air flow in the sampler 7 is avoided, and the extraction work of the PVC powder caking collected in the sampler 7 is ensured.
The first spacing ring 302 is set up to be by the 7 outside downward sloping form of lateral sampling post 5 central point of sample thief, when first spacing ring 302 and second spacing ring 303 contact, the first spacing ring 302 of second spacing ring 303 extrusion slope setting makes its outwards expansion, makes first spacing ring 302 hug closely the 7 inner wall of sample thief, strengthens the leakproofness, further prevents that the PVC powder from getting into the external world through air flue 7002, avoids the PVC powder to run off, guarantees production quality.
The mixing method for producing the medical PVC material comprises the following working steps:
s1: dry-mixing, namely placing the prepared PVC powder and the additive into a cylinder 2 for dry-mixing;
s2: heating the mixed raw materials to a specific temperature according to specific process requirements, and melting the mixed raw materials into uniform paste;
s3: sampling, namely performing targeted sampling on the mixture of the PVC powder and the additive in the cylinder 2 in the mixing process;
s4: and (3) performing technical adjustment, namely performing corresponding adjustment on the rotating speed and the heating temperature of the stirrer 4 according to the sampling data after the sampling data are obtained.
In the process of PVC material thermal mixing, as water vapor is easy to adhere to the inner wall of the sampler 7, in the process of descending the sampler 7, the water vapor condensed on the inner wall of the sampler 7 is scraped through the sponge 307, when the lower side of the sampler 7 moves to the lower end of the sampling column 5, the sampler 7 simultaneously drives the four shifting blocks 304 to squeeze the adjacent squeezing strips 308, the squeezing strips 308 move to the outer side of the scraping ring 301 based on the central point of the scraping ring 301, the squeezing strips 308 squeeze the adjacent sponge 307, the water in the sponge 307 is squeezed into the adjacent drainage groove 7003, the water is guided to the outside of the sampler 7 through the drainage groove 7003, the water vapor is prevented from adhering to PVC powder in the sampler 7, the accuracy of sampling data is influenced, meanwhile, the water is prevented from accumulating in the sponge 307, and the scraping of the water vapor on the inner wall of the sampler 7 is prevented; in order to prevent water vapor from entering the sampling tube 106, before the sampler 7 starts sampling, the water vapor entering the sampler 7 from the barrel 2 is discharged to the outside through the air duct 7002, at this moment, the diaphragm 104 is in a closed state, then, the sampler 7 drives the second limiting ring 303 to move downwards, the second limiting ring 303 moves to be attached to the first limiting ring 302, at this moment, the second air vent 30301 on the second limiting ring 303 is simultaneously blocked with the first air vent 30201 on the first limiting ring 302, the air duct 7002 is divided into an upper region and a lower region after the first limiting ring 302 is attached to the second limiting ring 303, the lower region of the air duct 7002 is isolated from the outside through the air duct 7002, PVC powder is prevented from entering the outside through the air duct 7002, the resource utilization rate is reduced, the production quality is affected, then, the sucking pump is started, the sampling tube 106 generates suction force, the diaphragm 104 is opened to the middle part of the sampling cavity 6001 under the suction force, at this moment, PVC powder on the lower side of the air duct 7002 enters the sampling cavity 6001 under the action, after the PVC powder is finished, the control of expansion, the scraper 102 is enabled to be attached to the air bag 102, and then the scraper is driven by the control ring 102 to move up, and the second limiting ring 7002 is prevented from moving to the second limiting ring 302, and the second limiting ring is blocked by the air duct is prevented from being blocked by the blocking by the air duct, and the movement of the air duct 102, and the blocking is prevented from being blocked by the suction ring.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (9)
1. A mixer for producing medical PVC materials comprises a mixer (1), a cylinder (2), a cylinder cover (3) and a stirrer (4); the mixer (1) is provided with a cylinder (2); a cylinder cover (3) is movably connected on the cylinder body (2); the lower part of the inner side of the cylinder body (2) is movably connected with a stirrer (4); the method is characterized in that: the system also comprises a sampling column (5), a supporting column (6), a sampler (7), a sampling assembly, an overheat prevention system and a dehumidification system; a sampling column (5) is arranged on the stirrer (4); the upper side of the sampling column (5) is movably connected with a support column (6); the supporting column (6) is movably connected with a sampler (7) for sampling the caking PVC powder; the gap between the lower opening of the sampler (7) and the support column (6) is a sampling port; the sampler (7) is movably connected with the cylinder cover (3); a sampling component for sampling PVC powder is arranged on the sampler (7); an overheat prevention system for preventing the stirrer (4) from being overheated is arranged on the support column (6); a dehumidifying system for separating moisture in the PVC powder is arranged in the sampler (7);
the sampling assembly comprises an air bag (101), a scraper (102), a diaphragm (104), a first supporting block (105), a sampling tube (106) and a second supporting block (107); an air bag (101) is fixedly connected to the lower side of the sampler (7); the left side of the sampler (7) is provided with an air vent groove (7001); the lower side of the ventilation groove (7001) is communicated with the air bag (101); the inner side of the air bag (101) is annularly provided with a plurality of scrapers (102) for scraping the solidified matters on the surface of the sampling column (5); a sampling cavity (6001) for collecting PVC powder is arranged in the support column (6); the lower part of the support column (6) is annularly provided with a plurality of diaphragms (104); each diaphragm (104) is positioned outside the sampling cavity (6001); an air channel (7002) is formed between the sampler (7) and the support column (6); a first supporting block (105) is arranged above the cylinder cover (3); the first supporting block (105) is fixedly connected with the upper side of the supporting column (6); a sampling tube (106) is fixedly connected inside the support column (6); the lower side of the sampling tube (106) is communicated with the sampling cavity (6001); the upper side of the sampler (7) is fixedly connected with a plurality of second supporting blocks (107) which are symmetrical back and forth.
2. A mixer for producing medical PVC according to claim 1, wherein: the device also comprises a deflector rod (103); the lower side of the air bag (101) is fixedly connected with a plurality of deflector rods (103) for crushing massive PVC powder.
3. A mixer for producing medical PVC according to claim 1, wherein: the inner top wall of the sampling cavity (6001) is inclined, and the highest position is positioned at the communication position of the sampling tube (106) and the sampling cavity (6001).
4. A mixer for producing medical PVC according to claim 1, wherein: the overheat prevention system comprises an air inlet pipe (201), a cooling pipe (202), a return pipe (203) and an air outlet pipe (204); an air inlet pipe (201) is fixedly connected inside the support column (6); a cold air groove (5001) is formed in the sampling column (5); when the support column (6) is connected with the sampling column (5), the air inlet pipe (201) is communicated with the cold air groove (5001); a cold air cavity (4001) is formed in the stirrer (4); a first backflow cavity (4002) is formed in the stirrer (4); a second reflux cavity (6002) is arranged at the lower side of the support column (6); a cooling pipe (202) for preventing lubricating grease from caking is fixedly connected inside each blade on the stirrer (4); an air inlet end (20201) is arranged on each cooling pipe (202); an air outlet end (20202) is arranged on each cooling pipe (202); each air inlet end (20201) is communicated with the cold air cavity (4001); each air outlet end (20202) is communicated with the first backflow cavity (4002); a return pipe (203) is fixedly connected in the sampling column (5); the lower end of the return pipe (203) is communicated with the first return cavity (4002); the upper end of the return pipe (203) is communicated with a second return cavity (6002); an air outlet pipe (204) is fixedly connected inside the support column (6); the lower end of the air outlet pipe (204) is communicated with the second reflux cavity (6002); the upper end of the air outlet pipe (204) penetrates through the supporting column (6) to be communicated with the outside.
5. A mixer for producing medical PVC according to claim 4, wherein: the return pipe (203) is arranged in a spiral shape.
6. A mixer for producing medical PVC according to claim 4, wherein: the dehumidification system comprises a scraping ring (301), a first limiting ring (302), a second limiting ring (303), a shifting block (304), a scraping block (305), a guide block (306), a sponge (307) and an extrusion strip (308); the lower end of the supporting column (6) is fixedly connected with a scraping ring (301); the lower part of the support column (6) is fixedly connected with a first limiting ring (302), and the first limiting ring (302) is positioned above the scraping ring (301); the upper part of the inner side of the sampler (7) is fixedly connected with a second limiting ring (303); a plurality of first vent holes (30201) are annularly formed in the first limiting ring (302); a plurality of second vent holes (30301) are annularly formed in the second limiting ring (303), and the first vent holes (30201) and the second vent holes (30301) are arranged in a staggered mode; the middle annular array of the inner side of the sampler (7) is provided with a plurality of shifting blocks (304); the upper side of the scraping ring (301) is annularly provided with a plurality of scraping blocks (305); the scraping ring (301) is provided with a plurality of guide blocks (306) in a ring array; every two adjacent guide blocks (306) are fixedly connected with the adjacent scraping blocks (305), and the two guide blocks (306) are symmetrically arranged by taking the central axis of the scraping blocks (305) as a reference; the upper side of each guide block (306) is provided with a guide groove (30401); a plurality of sponges (307) are arranged on the scraping ring (301) in an annular array; the scraping ring (301) is provided with a plurality of extrusion strips (308) in a ring array; each extrusion strip (308) is in sliding connection with two adjacent guide blocks (306); each sponge (307) is positioned outside the adjacent extrusion strip (308) by taking the center point of the scraping ring (301) as a reference; a plurality of drainage grooves (7003) are formed in the annular array on the sampler (7); each drainage channel (7003) is located outside an adjacent sponge (307).
7. A mixer for producing medical PVC according to claim 6, wherein: the dehumidification system also comprises a dredging rod (309); a plurality of dredging rods (309) are annularly arranged at the lower side of the second limiting ring (303); each dredging rod (309) is arranged in a staggered manner with a second ventilation hole (30301) on the second limiting ring (303); each of the ventilation bars (309) is located on the same vertical line as the first ventilation hole (30201).
8. A mixer for producing medical PVC according to claim 7, wherein: the first limiting ring (302) is arranged in a downward inclined shape from the outer side of the sampler (7) to the center point of the sampling column (5).
9. A mixing method for producing medical PVC material is characterized in that: the mixing method uses the mixer for producing the medical PVC material according to claim 8, and comprises the following working steps:
s1: dry-mixing, namely putting the prepared PVC powder and the additive into a cylinder (2) for dry-mixing;
s2: heating the mixed raw materials to a specific temperature according to specific process requirements, and melting the mixed raw materials into uniform paste;
s3: sampling, namely performing targeted sampling on the mixture of the PVC powder and the additive in the cylinder (2) in the mixing process;
s4: and (3) performing technical adjustment, namely performing corresponding adjustment on the rotating speed and the heating temperature of the stirrer (4) according to the sampling data after the sampling data are obtained.
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| CN202311366301.1A CN117101521B (en) | 2023-10-20 | 2023-10-20 | Mixer for producing medical PVC material and mixing method thereof |
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| JPH09318620A (en) * | 1996-05-31 | 1997-12-12 | Nisshin Steel Co Ltd | Molten metal sampler |
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| JP2002253942A (en) * | 2000-12-27 | 2002-09-10 | Nippon Electric Glass Co Ltd | Molten glass agitating bar and molted glass agitating device |
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| CN208943964U (en) * | 2018-09-07 | 2019-06-07 | 广东汇龙涂料有限公司 | A kind of agitator tank with dehumidifying ventilated device |
| CN114631563A (en) * | 2022-03-18 | 2022-06-17 | 江西阳光乳业股份有限公司 | Full-automatic yoghourt fermentation production system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09318620A (en) * | 1996-05-31 | 1997-12-12 | Nisshin Steel Co Ltd | Molten metal sampler |
| KR19980022945U (en) * | 1996-10-30 | 1998-07-25 | 이성범 | Sampling Sampler for Charter Component Analysis |
| JP2002253942A (en) * | 2000-12-27 | 2002-09-10 | Nippon Electric Glass Co Ltd | Molten glass agitating bar and molted glass agitating device |
| CN106198105A (en) * | 2016-08-12 | 2016-12-07 | 玉溪九洲生物技术有限责任公司 | A kind of horse blood slurry sampler |
| CN208943964U (en) * | 2018-09-07 | 2019-06-07 | 广东汇龙涂料有限公司 | A kind of agitator tank with dehumidifying ventilated device |
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