CN115090215B - Caprolactam sheeting equipment - Google Patents
Caprolactam sheeting equipment Download PDFInfo
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- CN115090215B CN115090215B CN202210906045.XA CN202210906045A CN115090215B CN 115090215 B CN115090215 B CN 115090215B CN 202210906045 A CN202210906045 A CN 202210906045A CN 115090215 B CN115090215 B CN 115090215B
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- rotary drum
- shell
- scraper
- caprolactam
- sheeting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/24—Obtaining flakes by scraping a solid layer from a surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/08—Screens rotating within their own plane
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Organic Chemistry (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses caprolactam sheeting equipment, and belongs to the technical field of caprolactam sheeting equipment. The device comprises a rotary drum flaker, a storage bin, a freezing system and a drying system; the rotary drum sheeting machine comprises a shell, a rotary drum rotatably arranged in the shell, and a scraper arranged in the shell corresponding to the outer surface of the rotary drum, wherein the rotary drum is provided with an inner cavity, a cavity is formed between the rotary drum and the shell, a space between the lower part of the rotary drum and the shell is a liquid material pool, a refrigerating system is communicated with the inner cavity of the rotary drum, a feed inlet and a discharge outlet are arranged on the shell, the scraper is in a spiral shape consistent with the curved surface of the rotary drum, the degree of envelope of the scraper on the rotary drum is 150-180 degrees, and the lower end of the scraper is positioned at one side of the discharge outlet of the shell; the bin is arranged corresponding to the discharge hole of the shell, and a crushing device for crushing the solid caking pieces and a screen for filtering caking piece powder are arranged in the bin; a heating system is arranged on the outer side of the lower part of the shell; the drying system is communicated with a cavity between the rotary drum and the shell of the rotary drum sheeting machine.
Description
Technical Field
The invention relates to caprolactam sheeting equipment, which is equipment for converting liquid caprolactam into solid sheeting, and belongs to the technical field of caprolactam sheeting equipment.
Background
Caprolactam is an important organic chemical raw material, and is mainly used as a monomer raw material for industrial spinning, plastic modification, palm fiber, fishing net wire, conveyor belt core, injection molding, food packaging film and the like. Caprolactam raw materials are generally liquid, special vehicles are required to transport, the transportation cost is high, and transportation safety hazards exist. In order to avoid the problem of storing and transporting a large amount of liquid caprolactam, the liquid caprolactam is quickly cooled and converted into solid knots, and the low-cost public engineering which is convenient and easy to obtain enables the low-cost production of knots.
At present, the domestic traditional caprolactam sheeting technology generally adopts a rotary drum sheeting machine, and the sheeting machine has import and domestic production, and exposes a plurality of defects after years of use: the equipment structure is complex, and the investment is large; the fault rate of the rotary drum and scraper system of the equipment is high, and the maintenance cost is high; in order to obtain uniform granularity, the requirements on cooling temperature are high, the clearance adjustment of a scraper is difficult, the required precision is high, the transmission is unstable, and the energy consumption of the whole system is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides caprolactam sheeting equipment with simple structure, low failure rate and low energy consumption.
The invention is realized by the following technical scheme: caprolactam sheeting equipment, characterized by: comprises a rotary drum flaker, a stock bin, a freezing system and a drying system; the rotary drum flaker comprises a shell, a rotary drum rotatably arranged in the shell, and a scraper arranged in the shell and corresponding to the outer surface of the rotary drum, wherein the rotary drum is provided with an inner cavity, a cavity is formed between the rotary drum and the shell, a space between the lower part of the rotary drum and the shell is a liquid material pool, the refrigerating system is communicated with the inner cavity of the rotary drum, a feed inlet and a discharge outlet are formed in the shell, the scraper is in a spiral shape consistent with the curved surface of the rotary drum, the degree of envelope of the scraper on the rotary drum is 150-180 degrees, and the lower end of the scraper is positioned at one side of the discharge outlet of the shell; the bin is arranged corresponding to the discharge hole of the shell, and a crushing device for crushing solid caking pieces and a screen for filtering caking piece powder are arranged in the bin; a heating system is arranged on the outer side of the lower part of the shell; the drying system is communicated with a cavity between the rotary drum and the shell of the rotary drum sheeting machine.
When the invention works, caprolactam liquid material enters a liquid material pool between the rotary drum and the shell through the feed inlet on the shell of the rotary drum flaker, the lower part of the rotary drum flaker is immersed in the liquid material pool containing the liquid material, and cooling medium is introduced into the rotary drum of the rotary drum flaker through a refrigerating system. When the rotary drum rotates under the action of power, the material is carried out from the liquid material pool along with the uniform rotation of the surface of the rotary drum by utilizing the tension of the surface of the material liquid and the adhesion between the material and the surface of the rotary drum, a layer of film product with uniform thickness is formed on the outer surface of the rotary drum, and the temperature of the material is rapidly cooled to a solidifying point and solidified through the temperature difference between the material on the outer surface of the rotary drum and a cooling medium in the rotary drum. When the rotary drum rotates to the scraper position, the thin film product solidified into solid is scraped in a sheet form by the scraper, and the scraped sheet product finally enters the bin. The solid material of knot piece is smashed through the reducing mechanism in the feed bin, and qualified crushing product is deposited in the feed bin after filtering through the screen cloth, waits for bagging operation. The heating system arranged on the outer side of the lower part of the rotary drum flaker shell is used for heating the liquid material, so that the temperature of the liquid caprolactam is kept at 80-85 ℃, crystallization is convenient, and the crystallization temperature is about 69 ℃. The drying system is used for introducing drying air into the rotary drum sheeting machine to prevent the sheeting from being bonded together, thereby being beneficial to the discharge and subsequent treatment of the solid sheeting. The scraper adopts the spiral scraper, the enveloping degree of the scraper on the rotary drum is 150-180 degrees, the design can ensure that the whole edge surface of the scraper does not work simultaneously when the scraper scrapes the film product on the surface of the rotary drum, the edge surface of the scraper contacts the film product on the surface of the rotary drum in sequence to scrape, the scraper is small in stress during scraping, stable in transmission, and capable of reducing the failure rate of the scraper, and meanwhile, the structural design can reduce the energy consumption, reduce the power requirement on a rotary drum motor and achieve the effects of saving energy and reducing abrasion.
Further, the air outlet end of the drying system is connected with a dust remover. The dust remover can be used for removing dust from the air discharged from the rotary drum flaker.
Further, the refrigerating system is a chilled water system, the inner cavity of the rotary drum is provided with a nozzle which is connected with the chilled water system or the cooling medium which is introduced into the inner cavity of the rotary drum by the refrigerating system is cool air. When the chilled water system adopts chilled water as a cooling medium, the chilled water is introduced into the inner cavity of the rotary drum sheeting machine to cool the rotary drum. When the cooling medium introduced into the inner cavity of the rotary drum of the freezing system is cool air, the cool air with ultralow temperature can enable the liquid caprolactam to be instantaneously crystallized.
Further, in order to be convenient for detect the liquid level in the rotary drum inner chamber, the rotary drum inner chamber is provided with the liquid level sensor who is used for detecting chilled water level.
Further, the smashing device comprises a motor fixed on the shell and a roller blade connected with the motor shaft, wherein the roller blade comprises at least one layer of spiral blades which are axially arranged along the cutter bar at intervals, each spiral blade is provided with two spiral blades which are arranged at an included angle of 180 degrees, the rotation directions of the two blades are consistent, the heights of the two blades are different, and the blades are provided with radians which are bent downwards or upwards. The structural design of the spiral blade of the roller blade can enable the roller blade to fully crush caprolactam solid knots through the spiral blade when the roller blade rotates, two blades at different heights can crush solid knots at different heights, and the roller blade can crush knots at the upper part for a plurality of times along with falling of knot powder with qualified granularity of a filter screen part, and the bent blades can enable the solid knots to form turbulent flow in the rotating process, so that the crushing effect and the crushing efficiency of the solid knots can be increased.
Further, in order to further improve the crushing effect of the caking piece, the roller cutter comprises an upper layer of spiral blade and a lower layer of spiral blade. The two layers of spiral blades can crush the solid caking pieces for multiple times, so that the crushing effect and the crushing efficiency of the caking pieces can be greatly improved.
Further, the screen cloth is fixedly arranged in the stock bin, and the lower end of the cutter bar of the roller cutter is rotatably connected with the center of the screen cloth.
Further, the feed bin set up in the discharge gate inboard of casing, the low end of scraper extends to the top of feed bin, the screen cloth rotationally sets up in the feed bin, the screen cloth is omega shape, the screen cloth lower part is provided with the motor of being connected with it, the rotation direction of screen cloth with the rotation direction of roller sword is opposite or the rotation direction of screen cloth with the rotation direction of roller sword is unanimous. The feed bin sets up in the discharge gate inboard of casing, and the low end of scraper extends to the top of feed bin, the initial solid-state knot piece that the scraper scraped can directly get into in the feed bin and smash, need not to set up the feeding mechanism that will scrape the knot piece and carry in to the feed bin and save the pay-off step, can save equipment configuration, can realize energy-conserving effect simultaneously. When the rotation direction of the screen cloth is consistent with that of the roller cutter, the qualified caking powder with granularity can rapidly enter the storage bin under the action of centrifugal force, and the next calculation bagging operation is waited. When the rotation direction of the screen cloth is opposite to the rotation direction of the roller blade, the solid initial caking piece naturally forms spiral flow, at the moment, the blades of the spiral roller blade can be horizontally arranged, the solid initial caking pieces with different sizes can be easily crushed, and the caking piece powder with qualified granularity can quickly enter the storage bin under the action of centrifugal force to wait for the next calculation bagging operation.
Further, the cleaning mechanism comprises a cleaning motor, a gear and a scraping plate driven by the cleaning motor, a rack and a limiting guide plate are arranged at the outer side end of the scraping plate, a guide groove is formed in the limiting guide plate, one end of a motor shaft of the cleaning motor is movably arranged in the guide groove of the limiting guide plate, the gear is connected with a rotor of the cleaning motor into a whole, the gear is meshed with the rack, the other end of the cleaning motor is supported in a bearing shell through a bearing, an auxiliary supporting rod is arranged at the lower part of the gear, one end of a scraping plate connecting rod is fixedly connected with the end face of the bearing shell, the other end of the scraping plate connecting rod is connected with the scraping plate through an electric cylinder, and the scraping plate can be in contact with the inner surface of the scraping plate. Under the drive of the cleaning motor, the gear and the rack are meshed to drive the scraper to move along the surface of the scraper, and the scraper of the cleaning mechanism cleans the surface of the scraper in the moving process, so that the surface of the scraper is clean and does not exist.
Furthermore, the scraper is a single-sided cutting edge, the cutting edge is higher than the inner surface of the scraper, and the inner surface of the scraper is made of ceramic composite materials. The design that the single-sided cutting edge is higher than the inner surface of the cutter is adopted, so that the solid initial knot piece is convenient to be free from sticking to the cutter and the solid knot piece can naturally slide down; the inner surface of the cutter is made of ceramic composite materials, the smoothness of the inner surface of the cutter is high, and the solid initial knot piece can be ensured to smoothly slide to the lowest part under the action of self gravity.
Further, the heating system adopts steam heating. The energy consumption can be reduced by adopting steam heating.
The beneficial effects of the invention are as follows: the invention has simple structure and low manufacturing cost; the lower part of the rotary drum is immersed into liquid materials to rotate so as to drive the materials to be attached to the surface of the rotary drum, and the liquid materials are crystallized and solidified in a mode of introducing cooling medium into the inner cavity of the rotary drum, so that the requirement on cooling temperature is low, and the energy consumption can be greatly reduced; according to the scraper structure adopted in the invention, when a film product on the surface of the rotary drum is scraped, the whole edge surface of the scraper does not work simultaneously, the edge surface of the scraper is contacted with the film product on the surface of the rotary drum in sequence to scrape, the stress of the scraper is small in the scraping process, the transmission is stable, the failure rate of the scraper can be reduced, and meanwhile, the energy consumption can be reduced; the invention adopts the public engineering with low cost, which is convenient and easy to obtain, and can greatly reduce the production cost.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in embodiment 1;
FIG. 2 is a schematic view of the doctor blade arrangement of the invention in example 1;
FIG. 3 is a schematic view of B-B in FIG. 2;
FIG. 4 is a schematic view of the installation of the doctor blade in example 1;
FIG. 5 is a front view of a roller blade (with a helical blade) in accordance with the present invention;
FIG. 6 is a schematic perspective view of a roller blade (with two helical blades) in accordance with the present invention;
FIG. 7 is a schematic view in the direction A of FIG. 1;
FIG. 8 is a schematic view showing the arrangement of the doctor blade and the stock bin of the invention in example 2;
FIG. 9 is a schematic view of the structure of the screen in example 2;
FIG. 10 is a schematic view of the invention in embodiment 3 provided with a cleaning mechanism;
FIG. 11 is a schematic transmission of the sweeping mechanism of FIG. 10;
FIG. 12 is a schematic view of the connection between the cleaning mechanism and the scraper in FIG. 10;
in the figure, 1, a drum flaker, 1-1, a shell, 1-2, a drum, 1-3, a scraper, 1-4, a drum driving motor, 1-5, a rack, 1-6, a limit guide plate, 2, a bin, 3, a roller cutter, 3-1, a spiral blade, 4, a screen, 5, a motor of a smashing device, 6, a dust remover, 7, a cleaning mechanism, 7-1, a cleaning motor, 7-2, a gear, 7-3, a scraper, 7-4, an electric cylinder, 7-5, an electric cylinder controller ECU,7-6, a motor TCU,7-7, a bearing, 7-8, a bearing shell, 7-9, a scraper connecting rod, 7-10, an auxiliary supporting rod, 8, a water pump, 9 and a motor of the screen.
Detailed Description
The invention is further illustrated by the following non-limiting examples, in conjunction with the accompanying drawings:
example 1
As shown in fig. 1-7, caprolactam sheeting equipment comprises a rotary drum sheeting machine 1, a stock bin 2, a freezing system and a drying system. The rotary drum flaker 1 comprises a shell 1-1, a rotary drum 1-2 rotatably arranged in the shell 1-1, and a scraper 1-3 arranged in the shell 1-1 corresponding to the outer surface of the rotary drum 1-2. The rotary drum 1-2 is provided with an inner cavity, a cavity is formed between the rotary drum 1-2 and the shell 1-1, a liquid material pool is arranged between the lower part of the rotary drum 1-2 and the shell 1-1 and is used for containing caprolactam liquid materials, and the material level is controlled by a radar level gauge. The rotary drum 1-2 is driven to rotate by a rotary drum driving motor 1-4, and the rotation of the rotary drum is controlled by a PLC and a frequency converter. The freezing system is communicated with the inner cavity of the rotary drum 1-2 and is used for introducing a cooling medium into the rotary drum 1-2 to form a temperature difference between the inside and the outside of the rotary drum, so that the temperature of materials outside the rotary drum is rapidly cooled to a freezing point and solidified. The freezing system in the embodiment adopts a chilled water system, a nozzle is arranged in the inner cavity of the rotary drum 1-2 and is connected with the chilled water system, a liquid level sensor for detecting the water level of chilled water is arranged in the inner cavity of the rotary drum 1-2, and the starting of the water pump 8 is controlled through a liquid level signal. The shell 1-1 is provided with a feed inlet and a discharge outlet, and the feeding is controlled by a feed control valve. The scraper 1-3 is in a spiral shape consistent with the curved surface of the rotary drum 1-2, the scraper 1-3 is fixedly connected with the flaker shell, the lower end of the scraper 1-3 is positioned at one side of the discharging hole of the shell 1-1, a certain gap is reserved between the scraper 1-3 and the surface of the rotary drum 1-2, and the enveloping degree of the scraper 1-3 on the rotary drum 1-2 is 150-180 degrees. Preferably, the mounting holes on the bracket for mounting the scraper 1-3 are bar-shaped holes, and the gap between the scraper 1-3 and the surface of the rotary drum 1-2 can be adjusted. The scraper 1-3 adopts a single-sided cutting edge, the cutting edge adopts a hard alloy cutter, and a diamond-like coating is deposited on the surface, so that the scraper has stronger abrasion resistance and longer service life; as shown in FIG. 3, the cutting edge of the scraper 1-3 is preferably higher than the inner surface of the scraper, so that the solid initial caking piece is convenient for not sticking the scraper and can naturally slide down; the inner surface of the scraper is made of ceramic composite material, so that the surface smoothness is high, and the solid initial caking piece can slide to the lowest part under the action of self gravity. The utility model discloses a crushing device for crushing solid caking pieces and a screen 4 for filtering caking piece powder, which comprises a shell 1-1 upper part of a caking piece machine, wherein the bin 2 is correspondingly arranged below a discharge hole of the shell 1-1, the bin 2 is internally provided with a crushing device for crushing solid caking pieces and the screen 4 for filtering caking piece powder, the crushing device comprises a motor 5 and a roller cutter 3, the motor 5 is fixed on the shell 1-1 upper part of the caking piece machine, the screen 4 is fixedly arranged in the bin 2 and is positioned at the lower part of the roller cutter 3, the upper part of a cutter bar of the roller cutter 3 is connected with an output shaft of the motor 5, and the lower part of the cutter bar of the roller cutter 3 is rotationally connected with the central point of the screen 4. The roller blade 3 comprises at least one layer of spiral blades 3-1 which are axially arranged at intervals along the cutter bar, each spiral blade 3-1 is provided with two spiral blades which are arranged at an included angle of 180 degrees, and the rotation directions of the two blades are consistent. The two blades of the spiral blade 3-1 can be horizontally arranged blades, in order to improve the crushing effect of the crushing device, in the embodiment, the spiral blade 3-1 is preferably obliquely arranged, the inclination angle is 15-30 degrees, the two blades of the spiral blade 3-1 are different in height, namely, the height of one blade is higher than that of the other blade, and the two blades are provided with downward or upward bending radians, the structural design can enable the knots to form turbulent flow in the rotating process of the roller blade, the spiral blade is convenient for fully crushing the knots, meanwhile, the two blades of the obliquely arranged spiral blade are respectively located at different heights, the knots at different positions are convenient to crush, and the roller blade can crush knots located on the upper part for multiple times along with falling of knot powder with qualified granularity of the filter screen part. The spiral blade 3-1 arranged on the roller blade 3 can be multi-layered, and the roller blade 3 preferably comprises an upper layer and a lower layer of the spiral blade 3-1. The initial solid caking pieces with uneven sizes entering the storage bin 2 can be crushed through the roller cutters 3 arranged in the storage bin 2, the solid caking pieces can be crushed for a plurality of times through the structural design of the roller cutters 3, and caking piece powder with qualified granularity falls down from the filter screen 4. The outer side of the lower part of the shell 1-1 is provided with a heating system, the heating system adopts steam for heating, and the temperature of the liquid caprolactam is kept at 80-85 ℃ by the heating system, so that the liquid caprolactam can be crystallized conveniently by utilizing the temperature difference. The drying system is communicated with a cavity between the rotary drum 1-2 and the shell 1-1 of the rotary drum flaker 1, the drying system adopts drying air to dry, and the air outlet end of the drying system is connected with a dust remover 6 for removing dust from the dried tail gas, and the tail gas after dust removal enters an emission system to be emitted. The drying system is used for introducing drying air into the rotary drum sheeting machine to prevent the sheeting from being bonded together, thereby being beneficial to the discharge and subsequent treatment of the solid sheeting.
The refrigeration system of the present invention may also employ: the cooling medium introduced into the inner cavity of the rotary drum by the refrigerating system is cool air, for example: adopts the freezing principle of Freon air conditioner to enter ultralow temperature cold air to crystallize liquid caprolactam instantaneously.
The bin 2 in this embodiment is disposed below the discharge port of the flaker, and this arrangement requires a feeding mechanism, such as a feeding screw, for feeding the solid flaked scraped by the scraper into the bin 2.
When the invention works, caprolactam liquid material enters a liquid material pool between the rotary drum 1-2 and the shell 1-1 through a feed inlet on the shell 1-1 of the rotary drum flaker 1, the lower part of the rotary drum 1-2 of the rotary drum flaker 1 is immersed in the liquid material pool containing the liquid material, and chilled water is introduced into the rotary drum 1-2 of the rotary drum flaker 1 through a refrigerating system. The rotary drum 1-2 rotates under the action of the rotary drum driving motor 1-4, the material is carried out from the liquid material pool along with the uniform rotation of the rotary drum surface by utilizing the tension of the material liquid surface and the adhesion between the material and the rotary drum surface, a layer of film product with uniform thickness is formed on the outer surface of the rotary drum, and the temperature of the material is rapidly cooled to a solidifying point and solidified through the temperature difference between the material on the outer surface of the rotary drum and the cooling medium in the rotary drum. When the rotary drum 1-2 is rotated to the position of the scraper 1-3, the film product solidified into solid is scraped off in a sheet form by the scraper 1-3, and the solid knots are sent into the bin 2 by the feeding mechanism. The solid material of the caking piece is crushed into powder through a crushing device in the feed bin 2 and then falls down through the screen 4 to wait for the next bagging operation. The heating system arranged on the outer side of the lower part of the rotary drum flaker shell is used for heating the liquid material, so that the temperature of the liquid caprolactam is kept at 80-85 ℃, crystallization is convenient, and the crystallization temperature is about 69 ℃. The drying system is used for drying the structure pieces by introducing drying air into the rotary drum structure piece machine, the tail gas after drying is dedusted by the deduster 6, and the tail gas after dedusting enters the emission system for emission.
Example 2
This embodiment is substantially the same as embodiment 1 except that: as shown in fig. 8 to 9, in this embodiment, the bin 2 is disposed inside the discharge port of the housing 1-1, that is, is moved upward with respect to the position where the bin is disposed in embodiment 1, the lower end of the scraper 1-3 extends above the bin 2, the screen 4 is rotatably disposed in the bin 2 below the roller blade 3, the screen 4 is in an ω -shape, and the lower portion of the screen 4 is provided with a motor 9 connected thereto. The motor 9 is arranged on a bracket which is fixedly connected with the inner wall of the stock bin 2. The screen 4 can be rotated by a motor 9. The rotation direction of the screen 4 may be the same as the rotation direction of the roller blade 3 or the rotation direction of the screen 4 may be opposite to the rotation direction of the roller blade 3. The arrangement mode of the bin 2 in the embodiment is convenient for the solid-state caking pieces scraped by the scraper to directly fall into the bin for crushing treatment, so that a feeding mechanism can be omitted, and equipment configuration is reduced. When the rotation direction of the screen 4 is the same as that of the roller blade 3, the solid initial caking pieces scraped by the scraper enter the screen 4 in the storage bin, the solid caking pieces are crushed through the rotation of the roller blade 3, and caking piece powder with qualified granularity can quickly enter the lower part of the storage bin under the action of centrifugal force to wait for the next calculation bagging operation; when the rotation direction of the screen 4 is opposite to that of the roller blade 3, the initial solid caking piece can naturally form spiral flow, at the moment, the spiral blade is horizontally arranged, the initial solid caking piece with the size can be easily broken, and the caking piece powder with qualified granularity can quickly enter the storage bin under the action of centrifugal force to wait for the next calculation bagging operation.
Other portions in this embodiment are the same as those in embodiment 1, and will not be described here again.
Example 3
This embodiment is substantially the same as embodiment 1 and embodiment 2 except that: as shown in fig. 10 to 12, a cleaning mechanism 7 is provided in the present embodiment for cleaning the blade surface. The cleaning mechanism 7 comprises a cleaning motor 7-1, a gear 7-2 and a scraping plate 7-3, wherein the cleaning motor 7-1 is an outer rotor motor, and the gear 7-2 is connected with a rotor of the cleaning motor 7-1 into a whole. The utility model discloses a scraper, including scraper 1-3, motor shaft, rack 1-3, spacing baffle 1-6, rack 1-5 and spacing baffle 1-6 are provided with in the outside end of scraper 1-3, and rack 1-5 sets up along the internal surface of scraper 1-3, and spacing baffle 1-6 vertically sets up in the outside end of scraper 1-3, is provided with the guide way on spacing baffle 1-6, and the one end of the motor shaft of cleaning motor 7-1 is movably set up in the guide way of spacing baffle 1-6, has the boss on the motor shaft and is used for playing spacing and guiding action, and the tip of spacing baffle 1-6 sets up detachable end plate, is convenient for the motor shaft to install in the guide way. The gear 7-2 is meshed with the rack 1-5. The rotor shaft or the gear shaft end at the other end of the cleaning motor 7-1 is supported in a bearing shell 7-8 through a bearing 7-7, an auxiliary supporting rod 7-10 is fixedly connected to the lower part of the bearing shell 7-8, polyurethane or other elastic materials are connected to the lower part of the auxiliary supporting rod 7-10, and the auxiliary supporting rod 7-10 is used for enabling the outer diameter of the bearing to be relatively fixed. One end of the scraper connecting rod 7-9 is fixedly connected with the end face of the bearing shell 7-8, the other end of the scraper connecting rod 7-9 is connected with the electric cylinder 7-4, the other end of the electric cylinder 7-4 is connected with the scraper 7-3, and the scraper 7-3 can be in contact with the inner surface of the scraper 1-3. When the cleaning mechanism works, under the drive of the cleaning motor 7-1, the gear 7-2 is meshed with the rack 1-5 to drive the scraper 7-3 to move along the scraper, and the scraper 7-3 cleans the surface of the scraper in the moving process. The cleaning motor 7-1 is controlled by a motor TCU, and the electric cylinder 7-4 is controlled by an electric cylinder controller ECU. The electric cylinder controller ECU is communicated with the motor TCU, and when the cleaning motor 7-1 rotates positively, the electric cylinder 7-4 stretches to enable the scraping plate 7-3 to move to the lower end for cleaning. When the cleaning motor 7-1 rotates reversely, the electric cylinder controller obtains signals, the electric cylinder 7-4 is shortened, the scraping plate 7-3 moves upwards and does not clean, and when the scraping plate does not clean, the cleaning mechanism stands by at the highest point. In order to prevent the cleaning mechanism from being overturned, a limiting structure can be arranged on the scraper to limit the cleaning mechanism.
The cleaning mechanism 7 in this embodiment can be applied to the apparatus described in embodiment 1 and embodiment 2.
Other portions of this embodiment are the same as those of embodiment 1 and embodiment 2, and will not be described here again.
Claims (8)
1. Caprolactam sheeting equipment, characterized by: comprises a rotary drum flaker (1), a stock bin (2), a freezing system and a drying system; the rotary drum flaker (1) comprises a shell (1-1), a rotary drum (1-2) rotatably arranged in the shell (1-1), and a scraper (1-3) arranged in the shell (1-1) corresponding to the outer surface of the rotary drum (1-2), wherein the rotary drum (1-2) is provided with an inner cavity, a cavity is formed between the rotary drum (1-2) and the shell (1-1), a space between the lower part of the rotary drum (1-2) and the shell (1-1) is a liquid material pool, the refrigerating system is communicated with the inner cavity of the rotary drum (1-2), a feed inlet and a discharge outlet are formed in the shell (1-1), the scraper (1-3) is in a spiral shape consistent with the curved surface of the rotary drum (1-2), the degree of the enveloping degree of the scraper (1-3) to the rotary drum (1-2) is 150-180 degrees, and the lower end of the scraper (1-3) is positioned at one side of the discharge outlet of the shell (1-1). The bin (2) is arranged corresponding to the discharge hole of the shell (1-1), and a crushing device for crushing solid caking pieces and a screen (4) for filtering caking piece powder are arranged in the bin (2); a heating system is arranged on the outer side of the lower part of the shell (1-1); the drying system is communicated with a cavity between a rotary drum (1-2) of the rotary drum sheeting machine (1) and the shell (1-1); the utility model discloses a grinding device, including feed bin (2), casing (1-1), scraper (1-3), crushing device, screen cloth (4), wherein feed bin (2) set up in the discharge gate inboard of casing (1-1), the low end of scraper (1-3) extends to the top of feed bin (2), crushing device is including fixing motor on casing (1-1), roller sword (3) be connected with the motor shaft, screen cloth (4) rotationally set up in feed bin (2) to be located roller sword (3) below, screen cloth (4) are omega shape, screen cloth (4) lower part is provided with the motor rather than being connected, the direction of rotation of screen cloth (4) with the direction of rotation of roller sword is opposite or the direction of rotation of screen cloth (4) is unanimous with the direction of rotation of roller sword.
2. Caprolactam sheeting apparatus according to claim 1, characterized in that: and the air outlet end of the drying system is connected with a dust remover.
3. Caprolactam sheeting apparatus according to claim 1, characterized in that: the freezing system is a chilled water system, a nozzle is arranged in the inner cavity of the rotary drum (1-2) and is connected with the chilled water system, or a cooling medium which is introduced into the inner cavity of the rotary drum by the freezing system is cool air.
4. Caprolactam sheeting apparatus according to claim 1, characterized in that: the roller blade (3) comprises at least one layer of spiral blades which are axially arranged at intervals along the cutter bar, each spiral blade is provided with two spiral blades which are arranged at an included angle of 180 degrees, the rotation directions of the two blades are consistent, the heights of the two blades are different, and the blades are provided with radians which are bent downwards or upwards.
5. The caprolactam sheeting apparatus of claim 4, wherein: the roller blade (3) comprises an upper layer of spiral blade and a lower layer of spiral blade.
6. The caprolactam sheeting apparatus of claim 4, wherein: caprolactam sheeting apparatus according to claim 1, characterized in that: the cleaning device is characterized by further comprising a cleaning mechanism (7), wherein the cleaning mechanism (7) comprises a cleaning motor (7-1), a gear (7-2) driven by the cleaning motor (7-1) and a scraping plate (7-3), a rack (1-5) and a limiting guide plate (1-6) are arranged at the outer side end of the scraping plate (1-3), a guide groove is formed in the limiting guide plate (1-6), one end of a motor shaft of the cleaning motor (7-1) is movably arranged in the guide groove of the limiting guide plate (1-6), the gear (7-2) is connected with a rotor of the cleaning motor (7-1) into a whole, the gear (7-2) is meshed with the rack (1-5), the other end of the cleaning motor (7-1) is supported in a bearing shell (7-8) through a bearing, an auxiliary supporting rod (7-10) is arranged at the lower part of the bearing shell (7-8), one end of a scraping plate connecting rod (7-9) is fixedly connected with the end face of the bearing shell (7-8), and the other end of the connecting rod (7-9) is connected with the scraping plate (7-3) through the electric connection of the scraping plate (7-3).
7. Caprolactam sheeting apparatus according to claim 1, characterized in that: the scraper (1-3) is a single-sided cutting edge, the cutting edge is higher than the inner surface of the scraper, and the inner surface of the scraper is made of ceramic composite materials.
8. Caprolactam sheeting apparatus according to claim 1, characterized in that: the heating system adopts steam heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210906045.XA CN115090215B (en) | 2022-07-29 | 2022-07-29 | Caprolactam sheeting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210906045.XA CN115090215B (en) | 2022-07-29 | 2022-07-29 | Caprolactam sheeting equipment |
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| CN115090215A CN115090215A (en) | 2022-09-23 |
| CN115090215B true CN115090215B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210906045.XA Active CN115090215B (en) | 2022-07-29 | 2022-07-29 | Caprolactam sheeting equipment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113413A (en) * | 1976-07-28 | 1978-09-12 | Dravo Corporation | Rotary scraper in a rotary drum assembly |
| CN204193888U (en) * | 2014-10-31 | 2015-03-11 | 江西高信有机化工有限公司 | A kind of efficient flaker |
| CN106140018A (en) * | 2016-08-11 | 2016-11-23 | 安徽雪浪华宝化工装备科技有限公司 | Rotary drum spraying condensation type crystallization pelleter |
| CN210045208U (en) * | 2019-05-15 | 2020-02-11 | 四川威科特石油工程技术有限公司 | Novel rotary drum flaker |
| CN113578197A (en) * | 2021-09-02 | 2021-11-02 | 唐山三孚硅业股份有限公司 | Drum type alkali flaker |
| CN114345490A (en) * | 2022-01-14 | 2022-04-15 | 淄博清大粉体材料工程有限公司 | Agricultural product crushing and drying device |
-
2022
- 2022-07-29 CN CN202210906045.XA patent/CN115090215B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113413A (en) * | 1976-07-28 | 1978-09-12 | Dravo Corporation | Rotary scraper in a rotary drum assembly |
| CN204193888U (en) * | 2014-10-31 | 2015-03-11 | 江西高信有机化工有限公司 | A kind of efficient flaker |
| CN106140018A (en) * | 2016-08-11 | 2016-11-23 | 安徽雪浪华宝化工装备科技有限公司 | Rotary drum spraying condensation type crystallization pelleter |
| CN210045208U (en) * | 2019-05-15 | 2020-02-11 | 四川威科特石油工程技术有限公司 | Novel rotary drum flaker |
| CN113578197A (en) * | 2021-09-02 | 2021-11-02 | 唐山三孚硅业股份有限公司 | Drum type alkali flaker |
| CN114345490A (en) * | 2022-01-14 | 2022-04-15 | 淄博清大粉体材料工程有限公司 | Agricultural product crushing and drying device |
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| CN115090215A (en) | 2022-09-23 |
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