CN115444058A - Production process of freeze-dried coffee powder - Google Patents
Production process of freeze-dried coffee powder Download PDFInfo
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- CN115444058A CN115444058A CN202211257267.XA CN202211257267A CN115444058A CN 115444058 A CN115444058 A CN 115444058A CN 202211257267 A CN202211257267 A CN 202211257267A CN 115444058 A CN115444058 A CN 115444058A
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- 239000000843 powder Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 238000001035 drying Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 238000004108 freeze drying Methods 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 238000011049 filling Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000007873 sieving Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 52
- 238000003860 storage Methods 0.000 claims description 48
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 239000012141 concentrate Substances 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000002950 deficient Effects 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 238000000859 sublimation Methods 0.000 claims description 4
- 230000008022 sublimation Effects 0.000 claims description 4
- 238000005054 agglomeration Methods 0.000 claims description 3
- 230000002776 aggregation Effects 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000010257 thawing Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/28—Drying or concentrating coffee extract
- A23F5/32—Drying or concentrating coffee extract by lyophilisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Tea And Coffee (AREA)
Abstract
The invention relates to the technical field of freeze-dried coffee production, in particular to a freeze-dried coffee powder production process, which comprises the following steps: preparing materials, unfreezing the materials, stirring and filtering, feeding and filling, freeze-drying, discharging and sieving, internally packaging, boxing and weighing; wherein, the freeze drying device used in the freeze drying process is provided with a placing mechanism for placing the coffee concentrated solution to be dried and a pre-cooling mechanism arranged on the top surface of the freeze dryer case; in the placing mechanism, the coffee concentrated solution is poured into the drying tray at the topmost layer, and after the drying tray at the topmost layer is filled with the coffee concentrated solution, the overflowed coffee concentrated solution flows into the drying tray at the next layer through the plurality of through holes until all the drying trays are filled with the coffee concentrated solution, so that the pouring process of the coffee concentrated solution is simplified; in the pre-cooling mechanism, the coffee concentrated solution can be cooled when passing through the cooling pipe, so that the aim of pre-cooling the coffee concentrated solution is fulfilled, and the pre-cooling time of the concentrated coffee solution in the freeze dryer can be shortened through the arrangement.
Description
Technical Field
The invention relates to the technical field of freeze-dried coffee production, in particular to a production process of freeze-dried coffee powder.
Background
Freeze-dried coffee powder is freeze-dried as the most important step in the production process. The freeze-drying step of freeze-dried coffee powder is generally completed by a freeze dryer, and a freeze-drying device for freeze-dried coffee powder processing, provided by the prior art, for example, application number (202121768416. X), includes a vacuum freeze dryer main body, wherein a protection component is provided on one side of the touch screen on the front surface of the vacuum freeze dryer main body, and when the device is not used, a protection plate in the protection component can be rotated to make the protection pad attach to the touch screen to protect the touch screen from damage.
However, the freeze-drying machine for freeze-drying coffee powder in the prior art has the following problems in the use process:
1. before freeze-drying, need pull out a plurality of drying trays earlier, with a plurality of drying trays of coffee concentrate leading-in, then push into freeze dryer inside with a plurality of drying trays again, the process of leading-in coffee concentrate in the drying tray is wasted time and energy one by one, has reduced freeze-dried coffee batch production's efficiency.
2. The condition for freeze-drying the coffee concentrated solution is to ensure that the coffee concentrated solution in the drying tray is solid, so the coffee concentrated solution needs to be refrigerated and frozen before drying, and the function of precooling the coffee concentrated solution is not available in the prior art, so that the precooling period of a freeze dryer is prolonged, and the freeze-drying efficiency is reduced.
Disclosure of Invention
The invention aims to provide a production process of freeze-dried coffee powder, which aims to solve the problems in the background technology.
The purpose of the invention can be realized by the following technical scheme:
a production process of freeze-dried coffee powder comprises the following steps:
s1: stock preparation
Obtaining a coffee concentrated solution through pretreatment, roasting, grinding, extraction and concentration, and freezing and storing the obtained coffee concentrated solution;
s2: material unfreezing
Thawing the stored solid coffee concentrate to a liquid state;
s3: stirring and filtering
Stirring and mixing the unfrozen coffee concentrated solution, and then removing impurities in the coffee concentrated solution in a filtering mode;
s4: feeding and filling
Injecting the filtered coffee concentrated solution into a storage container in freeze drying equipment, and then placing the storage container containing the coffee concentrated solution into the freeze drying equipment;
s5: freeze drying
Freeze-drying the coffee concentrate in a freeze-drying device;
s51: pre-cooling
Refrigerating the coffee concentrated solution in the storage container to a solid state;
s52: first stage drying
Removing water in a gaseous form by sublimation drying;
s53: second stage drying
Removing part of residual moisture by a desorption drying mode;
s6: discharging and sieving
After freeze drying, obtaining a coffee powder secondary finished product in the form of powder agglomeration, and screening the coffee powder secondary finished product by a screening machine to obtain a powdered coffee powder finished product;
s7: inner package
Subpackaging the freeze-dried coffee powder into small bags under a vacuum condition;
s8: boxing and weighing
And filling the packaged small coffee packet powder into a packaging box according to the preset weight.
Furthermore, the freeze drying equipment comprises a freeze dryer case, wherein the open end of the freeze dryer case is hinged with a freeze dryer case cover matched with the freeze dryer case, universal wheels are mounted at the corners of the bottom surface of the freeze dryer case, two first slide rails are symmetrically and fixedly mounted on the inner bottom surface of the freeze dryer case, a placing mechanism is slidably mounted on the two first slide rails, and the placing mechanism is used for placing the coffee concentrated solution to be dried;
the placing mechanism comprises a bottom plate, the bottom surface of the bottom plate is provided with a mounting seat which is fixedly connected with the position close to the corner of the bottom plate, a clamping wheel is installed in the mounting seat in a rotating mode, two clamping wheels on the same side are clamped on the same first sliding rail in a rolling mode, the top surface of the bottom plate is provided with a stand column which is fixedly connected with the position close to the corner of the bottom plate, the stand column is provided with a plurality of groups of storage assemblies in a sliding mode, the stand columns are adjacent to the two groups of storage assemblies, the stand columns are aligned end to end in a staggered mode, and the storage assemblies are used for containing coffee concentrated liquid.
Furthermore, the storage assembly comprises a second supporting seat and a drying disc, wherein a mounting groove for mounting the drying disc is formed in the top surface of the second supporting seat, one end of the mounting groove is hollowed out, a flow guide block is fixedly mounted at one end, far away from the hollowed-out position, of the bottom surface of the mounting groove, a plurality of through holes are formed in the top surface of the flow guide block, the through holes are distributed in an array mode along the length direction of the flow guide block, damping sliding sleeves are fixedly connected to the two side surfaces of the second supporting seat at positions far from the two ends of the second supporting seat, and the four damping sliding sleeves are respectively mounted on the peripheries of the four stand columns in a damping sliding mode;
the bottom of through-hole link up the bottom surface of mounting groove, the bottom of through-hole is provided with the toper water conservancy diversion spare with the coaxial setting of through-hole, the bottom surface fixed connection of toper water conservancy diversion spare and supporting seat two.
Further, the drying plate comprises a base plate, side baffles are fixedly mounted on two sides of the top surface of the base plate, the side baffles are gradient plates, the lower ends of the two side baffles are fixedly connected with a first end baffle arranged on the top surface of the base plate, the higher ends of the two side baffles are fixedly connected with a second end baffle arranged on the top surface of the base plate, a stirring assembly is arranged between the second end baffle and the first end baffle, and the stirring assembly is used for preliminarily crushing the coffee powder defective products after freeze drying.
Furthermore, the stirring assembly comprises a rotating shaft, a rack and a gear, a plurality of rotating shafts which are arranged in parallel are rotatably connected between the second end baffle and the first end baffle, the rotating shafts are arrayed along the length direction of the second end baffle, and a plurality of stirring blades are arrayed on the periphery of the rotating shafts along the circumferential direction and the axial direction of the rotating shafts;
one end of the rotating shaft, which is close to the second end baffle plate, rotatably penetrates through the second end baffle plate and is fixedly provided with a gear, two stop blocks are fixedly arranged at two ends of the outer side of the second end baffle plate, the racks are slidably arranged in the two stop blocks, two ends of each rack are fixedly provided with limiting slide seats, and the racks are simultaneously meshed with the limiting slide seats;
and a handle is fixedly arranged on one side of the rack far away from the second end baffle.
Furthermore, two slots are symmetrically formed in the bottom end of the open end of the freeze dryer case, the two slots are respectively located under the two first sliding rails, and the two slots are used for being connected with a supporting frame matched with the clamping wheel for use.
Furthermore, the support frame comprises two insertion rods, one end of each of the two insertion rods is fixedly connected with a connecting plate, and two ends of the bottom surface of each connecting plate are fixedly connected with support legs;
one ends, far away from the support legs, of the two insertion rods are respectively inserted into the two insertion slots in a sliding mode, second sliding rails are fixedly installed on the peripheries of the insertion rods, and the second sliding rails are aligned with the first sliding rails in the corresponding positions;
a plurality of fixing rods for stabilizing the two inserting rods are fixedly connected between the peripheries of the two inserting rods.
Furthermore, a pre-cooling mechanism is fixedly installed on the top surface of the freeze dryer case, the pre-cooling mechanism comprises a cooling pipe and a liquid storage bin, the liquid storage bin is arranged above the freeze dryer case, an installation ring is fixedly installed on the periphery of the liquid storage bin, and a plurality of support rods are fixedly connected between the periphery of the installation ring and the top surface of the freeze dryer case;
the liquid outlet end of the liquid storage bin is fixedly connected with the cooling pipe, one end of the cooling pipe, far away from the liquid storage bin, extends to a position close to the open end of the freeze dryer case, and one end of the cooling pipe, far away from the liquid storage bin, is fixedly connected with a liquid guide pipe for injecting liquid into the drying disc;
and spiral fins connected with the cooler are embedded in the inner wall of the cooling pipe.
Furthermore, the cooling pipe is S-shaped bent pipe, a height difference is formed between two ends of the cooling pipe, one end, close to the liquid storage bin, of the cooling pipe is higher than one end, connected with the liquid guide pipe, of the cooling pipe, and a plurality of first supporting seats are fixedly connected between the periphery of the cooling pipe and the top surface of the freeze dryer case.
Further, an annular rib is fixedly installed on the inner side of the case cover of the freeze dryer, an annular groove matched with the annular rib for use is formed in the open end of the freeze dryer case, and a sealing strip is fixedly installed in the annular groove;
the freeze dryer case cover is far away from a first connecting block fixedly connected with one side of the hinged position of the freeze dryer case cover, a locking threaded rod penetrates through the first connecting block, a locking knob is fixedly mounted at one end, close to the outer side of the freeze dryer case cover, of the locking threaded rod, and a second connecting block matched with the locking threaded rod is fixedly mounted at one side of the hinged position of the freeze dryer case cover, of the freeze dryer case cover.
The invention has the beneficial effects that:
1. when the freeze drying equipment is used, the support frame is connected with the freeze dryer case, then the placing mechanism is pulled out of the freeze dryer case to the support frame, and when the coffee concentrated solution is added, the filtered coffee concentrated solution is injected into the placing mechanism through the pre-cooling mechanism; during placing the mechanism, coffee concentrate to pouring into the drying tray of topmost layer, fill the back when the drying tray of topmost layer, the coffee concentrate that overflows can flow to the drying tray of lower floor through a plurality of through-holes in, until filling coffee concentrate with whole drying tray, simplified the infusion process of coffee concentrate through placing the setting of mechanism, need not annotate liquid in the drying tray one by one, improved the production efficiency to freeze-dried coffee powder.
2. In the pre-cooling mechanism, the cooler enables the cooling pipe to have a cooling effect through the spiral fins, the coffee concentrated solution can be cooled when passing through the cooling pipe, the purpose of pre-cooling the coffee concentrated solution is achieved, the pre-cooling time of the concentrated coffee solution in the freeze dryer can be shortened through the arrangement, and the production efficiency of freeze-dried coffee powder is further improved through the arrangement of the pre-cooling mechanism.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts;
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the overall three-dimensional structure of the freeze-drying apparatus of the present invention;
FIG. 3 is a schematic three-dimensional structure of the installation relationship between the cooling tube and the helical fin in the present invention;
FIG. 4 is a schematic three-dimensional view of the mounting relationship between the placement mechanism and the housing of the freeze dryer of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic three-dimensional structure of the connection between the cover and the cabinet of the freeze dryer according to the present invention;
FIG. 7 is a schematic three-dimensional structure of the connection between the support frame and the freeze dryer housing according to the present invention;
FIG. 8 is a schematic three-dimensional structure of the support frame of the present invention;
fig. 9 is an enlarged view of portion B of fig. 4;
FIG. 10 is a schematic three-dimensional view of the mounting relationship between the first support base and the drying pan of the present invention;
FIG. 11 is a first three-dimensional structure of a first support base according to the present invention;
FIG. 12 is a schematic three-dimensional structure diagram of a first support base according to the present invention;
FIG. 13 is a first three-dimensional structure of a drying tray according to the present invention;
FIG. 14 is a schematic three-dimensional view of a second embodiment of the present invention;
the reference numbers in the figures are as follows:
1-support frame, 2-cover of freeze dryer, 3-case of freeze dryer, 4-placement mechanism, 5-liquid guide tube, 6-cooling tube, 7-support seat I, 8-liquid storage bin, 9-mounting ring, 10-support rod, 11-annular rib, 12-annular groove, 13-universal wheel, 14-helical fin, 15-sealing strip, 16-second connecting block, 17-first slide rail, 18-slot, 19-locking knob, 20-locking threaded rod, 21-first connecting block, 22-support leg, 23-connecting plate, 24-inserting rod, 25-second slide rail, 26-fixing rod, 27-snap wheel, 28-mounting seat, 29-bottom plate, 30-upright column, 31-drying disk, 32-two, 33-damping slide sleeve, 34-guide block, 35-through hole, 36-mounting groove, 37-conical guide piece, 38-rotating shaft, 39-stirring blade, 40-rack, 41-handle, 42-gear, 43-gear, 44-stop block, 45-slide seat, 46-support seat, 46-side baffle, 48-side baffle, and 48-end baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, in an embodiment of the present invention, a production process of freeze-dried coffee powder includes the following steps:
s1: stock preparation
Pretreating, roasting, grinding, extracting and concentrating to obtain a coffee concentrated solution, and freezing and storing the obtained coffee concentrated solution;
s2: material unfreezing
Thawing the stored solid coffee concentrate to a liquid state;
s3: stirring and filtering
Stirring and mixing the unfrozen coffee concentrated solution, and then removing impurities in the coffee concentrated solution in a filtering mode;
s4: feeding and filling
Injecting the filtered coffee concentrated solution into a storage container in freeze drying equipment, and then placing the storage container containing the coffee concentrated solution into the freeze drying equipment;
s5: freeze drying
Freeze-drying the coffee concentrated solution by using freeze-drying equipment to obtain a defective coffee powder;
s51: precooling
Refrigerating the coffee concentrated solution in the storage container to a solid state;
s52: first stage drying
Removing water in a gas form by means of sublimation drying;
s53: second stage drying
Removing part of residual moisture by a desorption drying mode;
s6: discharging and sieving
After freeze drying, obtaining a coffee powder secondary finished product in the form of powder agglomeration, and screening the coffee powder secondary finished product by a screening machine to obtain a powdered coffee powder finished product;
s6: inner package
Subpackaging the freeze-dried coffee powder into small bags under a vacuum condition;
s7: boxing and weighing
And filling the packaged small coffee powder packet into a packaging box according to a preset weight.
Example 2:
referring to fig. 2 to 4 and 6 to 13, on the basis of embodiment 1, the freeze-drying apparatus includes a freeze dryer case 3, an open end of the freeze dryer case 3 is hinged with a freeze dryer case cover 2 used in cooperation, universal wheels 13 are mounted at corners of a bottom surface of the freeze dryer case 3, two first slide rails 17 are symmetrically and fixedly mounted on an inner bottom surface of the freeze dryer case 3, a placement mechanism 4 is slidably mounted on the two first slide rails 17, and the placement mechanism 4 is used for placing a coffee concentrated solution to be dried; place mechanism 4 and include bottom plate 29, the bottom surface of bottom plate 29 is at the equal fixedly connected with mount pad 28 in the position that is close to its turning, rotatable mounting has card wheel 27 in the mount pad 28, two card wheels 27 of the same one side roll the card and establish on same first slide rail 17, the top surface of bottom plate 29 is at stand 30 of the equal fixedly connected with in the position that is close to its turning, slidable mounting has multiunit storage component on four stands 30, the crisscross installation that aligns of head and the tail on four stands 30 between two sets of adjacent storage component, storage component is used for holding the coffee concentrate.
As shown in fig. 10 to 12, the storage assembly includes a second support seat 32 and a drying disc 31, a mounting groove 36 for mounting the drying disc 31 is formed in a top surface of the second support seat 32, one end of the mounting groove 36 is hollowed out, a flow guide block 34 is fixedly mounted on a bottom surface of the mounting groove 36 at one end far away from the hollowed-out position, a plurality of through holes 35 are formed in a top surface of the flow guide block 34, the plurality of through holes 35 are distributed in an array manner along a length direction of the flow guide block 34, damping sliding sleeves 33 are fixedly connected to positions of two ends of the second support seat 32 on two side surfaces of the second support seat at the two ends, and the four damping sliding sleeves 33 are respectively installed on peripheries of the four upright posts 30 in a damping sliding manner;
the bottom end of the through hole 35 penetrates through the bottom surface of the mounting groove 36, a conical flow guide piece 37 which is coaxial with the through hole 35 is arranged at the bottom end of the through hole 35, and the conical flow guide piece 37 is fixedly connected with the bottom surface of the second support seat 32. After the drying tray 31 is filled with the coffee concentrated solution, the coffee concentrated solution which is continuously introduced can flow to the drying tray 31 at the lower side through the through hole 35, and the coffee concentrated solution which passes through the through hole 35 is guided by the conical guide piece 37, so that the coffee concentrated solution is prevented from being attached to the bottom surface of the supporting seat II 32; the distance between two adjacent supporting seats 32 can be flexibly adjusted through the arrangement of the damping sliding sleeve 33, so that the optimal drying distance can be adjusted and determined according to the drying effect; the arrangement of the placing mechanism 4 facilitates the introduction process of the coffee concentrated liquid, the action of adding the coffee concentrated liquid into each group of storage assemblies is not needed, the total capacity of the plurality of groups of storage assemblies is determined, and then the coffee concentrated liquid is introduced into the storage assemblies on the top layer.
As shown in fig. 11 and 13, the drying plate 31 includes a bottom plate 45, side baffles 46 are fixedly mounted on both sides of the top surface of the bottom plate 45, the side baffles 46 are sloped plates, the lower ends of the two side baffles 46 are fixedly connected with a first end baffle 47 mounted on the top surface of the bottom plate 45, the higher ends of the two side baffles 46 are fixedly connected with a second end baffle 48 mounted on the top surface of the bottom plate 45, and a stirring assembly is arranged between the second end baffle 48 and the first end baffle 47 and used for primarily crushing defective coffee powder after freeze drying. The height of the first end baffle 47 in the drying tray 31 determines the capacity of the drying tray 31 and the drying thickness of the coffee concentrate, and the overflow of the excess coffee concentrate from the top surface of the first end baffle 47 into the through holes 35 can be limited by the side baffles 46.
As shown in fig. 6 to 9, two slots 18 are symmetrically formed at the bottom end of the open end of the freeze dryer chassis 3, the two slots 18 are respectively located right below the two first slide rails 17, and the two slots 18 are used for connecting the support frame 1 used in cooperation with the clamp wheel 27; the support frame 1 comprises two insert rods 24, one end of each of the two insert rods 24 is fixedly connected with a connecting plate 23, and two ends of the bottom surface of each connecting plate 23 are fixedly connected with supporting legs 22; one ends of the two insertion rods 24, which are far away from the support legs 22, are respectively inserted into the two slots 18 in a sliding manner, a second slide rail 25 is fixedly installed on the periphery of the insertion rods 24, and the second slide rail 25 is aligned with the first slide rail 17 at the corresponding position; a plurality of fixing bars 26 for fixing the two insert bars 24 are fixedly connected between the peripheries of the two insert bars 24. When the coffee concentrated solution is placed in the placing mechanism 4, the placing mechanism 4 needs to be pulled out of the freeze dryer cabinet 3; at this time, one ends of the two insertion rods 24 in the support frame 1, which are far away from the connecting plate 23, are respectively inserted into the two insertion slots 18, then the placing mechanism 4 is pulled out of the freeze dryer case 3, the plurality of clamping wheels 27 roll from the first slide rail 17 to the second slide rail 25, so that the placing mechanism 4 is moved out of the freeze dryer case 3, then after the placing action of the coffee concentrated solution is completed, the placing mechanism 4 is pushed into the freeze dryer case 3, and the clamping wheels 27 move from the second slide rail 25 to the first slide rail 17; the placing mechanism 4 can be pulled out of the freeze dryer case 3 or the placing mechanism 4 can be pushed into the freeze dryer case 3 in an European and rapid manner through the arrangement of the support frame 1, so that the operation of placing the coffee concentrated solution into the placing mechanism 4 is facilitated, and the practicability of the freeze drying equipment is improved.
As shown in fig. 2 and 3, a pre-cooling mechanism is fixedly mounted on the top surface of the freeze dryer case 3, the pre-cooling mechanism and the cooling mechanism include a cooling pipe 6 and a liquid storage bin 8, the liquid storage bin 8 is arranged above the freeze dryer case 3, a mounting ring 9 is fixedly mounted on the periphery of the liquid storage bin 8, and a plurality of support rods 10 are fixedly connected between the periphery of the mounting ring 9 and the top surface of the freeze dryer case 3; a cooling pipe 6 is fixedly connected with the liquid outlet end of the liquid storage bin 8, one end of the cooling pipe 6, which is far away from the liquid storage bin 8, extends to a position close to the open end of the freeze dryer case 3, and one end of the cooling pipe 6, which is far away from the liquid storage bin 8, is fixedly connected with a liquid guide pipe 5 for injecting liquid into the drying disc 31; the inner wall of the cooling pipe 6 is embedded with a spiral fin 14 connected with a cooler; the cooling tube 6 is S-shaped bent tube, and a height difference is formed between two ends of the cooling tube 6, one end of the cooling tube 6, which is close to the liquid storage bin 8, is higher than one end of the cooling tube 6, which is connected with the liquid guide tube 5, and a plurality of first supporting seats 7 are fixedly connected between the periphery of the cooling tube 6 and the top surface of the freeze dryer case 3. The concentrated coffee liquid to be dried is filled into the placing mechanism 4 through the pre-cooling mechanism, the liquid storage bin 8 is used for storing a certain amount of concentrated coffee liquid, when the concentrated coffee liquid is filled, one end of the liquid guide pipe 5, which is far away from the cooling pipe 6, is aligned to the drying disc 31 at the topmost layer, and the concentrated coffee liquid flows into the cooling pipe 6 from the liquid storage bin 8 and then flows into the placing mechanism 4 through the liquid guide pipe 5; wherein, the cooling effect of the cooling pipe 6 is realized by embedding the helical fins 14 in the inner wall of the cooling pipe 6, and the cooling pipe 6 adopts an S-shaped structure, thereby prolonging the cooling path of the cooling pipe 6 and improving the pre-cooling effect of the coffee concentrated solution.
Freeze-dried coffee powder is freeze-dried as the most important step in the production process. Freeze-drying coffee powder is generally performed by a freeze dryer (the freeze dryer mainly comprises a freezing system, a vacuum system, a circulating system, a hydraulic system, a CIP (common internal common protocol), an SIP (session initiation protocol) system, a pneumatic system, an electrical control system and a box structure, and the freeze-drying function is completed by two stages of sublimation drying and analytical drying, which is not repeated in the prior art); the condition for freeze-drying the coffee concentrated solution is to ensure that the coffee concentrated solution in the drying tray is solid, so the coffee concentrated solution needs to be refrigerated and frozen before drying, and the function of precooling the coffee concentrated solution is not provided in the prior art, so that the time of a precooling stage of a freeze dryer is increased.
When the freeze drying equipment is used, the support frame 1 is connected with the freeze dryer case 3, the placing mechanism 4 is pulled out of the freeze dryer case 3 onto the support frame 1, and when the coffee concentrated solution is added, the filtered coffee concentrated solution is injected into the placing mechanism 4 through the pre-cooling mechanism; in the placing mechanism 4, the coffee concentrated solution is poured into the drying tray 31 at the topmost layer, after the drying tray 31 at the topmost layer is filled with the coffee concentrated solution, the overflowed coffee concentrated solution flows into the drying tray 31 at the next layer through the through holes 35 until all the drying trays 31 are filled with the coffee concentrated solution, the pouring process of the coffee concentrated solution is simplified through the placing mechanism 4, the drying trays 31 are not required to be filled with the coffee concentrated solution one by one, and the production efficiency of freeze-dried coffee powder is improved;
in the pre-cooling mechanism, the cooler enables the cooling pipe 6 to have a cooling effect through the spiral fins 14, the coffee concentrated solution can be cooled when passing through the cooling pipe 6, the purpose of pre-cooling the coffee concentrated solution is achieved, the pre-cooling time of the concentrated coffee solution in the freeze dryer can be shortened through the arrangement, and the production efficiency of freeze-dried coffee powder is further improved.
Example 3:
referring to fig. 13 and 14, on the basis of embodiment 2, the stirring assembly includes a rotating shaft 38, a rack 40 and a gear 42, a plurality of rotating shafts 38 arranged in parallel are rotatably connected between a second end baffle 48 and a first end baffle 47, the plurality of rotating shafts 38 are arranged in an array along the length direction of the second end baffle 48, and a plurality of stirring blades 39 are arranged in an array along the circumferential direction and the axial direction of the outer periphery of the rotating shafts 38; one end of the rotating shaft 38 close to the second end baffle 48 rotatably penetrates through the second end baffle 48 and is fixedly provided with a gear 42, two end positions of the outer side of the second end baffle 48 are fixedly provided with a stop dog 44, a rack 40 is slidably arranged in the two stop dogs 44, two ends of the rack 40 are both fixedly provided with a limiting sliding seat 43, and the rack 40 is meshed with the limiting sliding seats 43; and a handle 41 is fixedly arranged on one side of the rack 40 far away from the second end baffle plate 48. After the coffee concentrated solution in the drying tray 31 is dried, the drying tray 31 needs to be taken out, and then the coffee powder of the secondary finished product is guided into a screening device to obtain the freeze-dried coffee powder of the finished product; according to the freeze drying equipment, the stirring assembly is arranged in the drying tray 31, so that the inferior coffee powder in the drying tray 31 can be quickly stirred and dispersed, the inferior coffee powder can be conveniently removed from the drying tray 31, the inferior coffee powder can be pre-crushed, convenience is brought to discharging and sieving in the next step, and the sieving efficiency of discharging and sieving is improved.
Example 4:
referring to fig. 2 and fig. 4 to 7, on the basis of embodiment 3, an annular rib 11 is fixedly installed on the inner side of the case cover 2 of the freeze dryer, an annular groove 12 matched with the annular rib 11 is formed at the open end of the case 3 of the freeze dryer, and a sealing strip 15 is fixedly installed in the annular groove 12; when the cover 2 of the freeze dryer is closed, the annular rib 11 is clamped in the annular groove 12, the sealing strip 15 in the annular groove 12 is pressed and contacted, and the sealing performance of the freeze drying equipment is improved through the arrangement of the annular rib 11, the annular groove 12 and the sealing strip 15.
One side fixedly connected with first connecting block 21 that its articulated department with freeze-dryer case 3 was kept away from to freeze-dryer case lid 2, and the screw thread runs through locking threaded rod 20 in the first connecting block 21, and locking threaded rod 20 is close to the one end fixed mounting in the 2 outside of freeze-dryer case lid has locking knob 19, and one side fixed mounting that its articulated department with freeze-dryer case lid 2 was kept away from to freeze-dryer case 3 has the second connecting block 16 that uses with locking threaded rod 20 cooperation. When the freeze dryer case cover 2 is closed, the locking screw rod 20 is rotated through the locking knob 19, and one end, far away from the locking knob 19, of the locking screw rod 20 is in threaded connection with the second connecting block 16, so that the freeze dryer case cover 2 and the freeze dryer case 3 are locked.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A production process of freeze-dried coffee powder is characterized by comprising the following steps:
s1: stock preparation
Obtaining a coffee concentrated solution through pretreatment, roasting, grinding, extraction and concentration, and freezing and storing the obtained coffee concentrated solution;
s2: material unfreezing
Thawing the stored solid coffee concentrate to a liquid state;
s3: stirring and filtering
Stirring and mixing the unfrozen coffee concentrated solution, and then removing impurities in the coffee concentrated solution in a filtering mode;
s4: feeding and filling
Injecting the filtered coffee concentrated solution into a storage container in freeze drying equipment, and then placing the storage container containing the coffee concentrated solution into the freeze drying equipment;
s5: freeze drying
Freeze-drying the coffee concentrate in a freeze-drying device;
s51: pre-cooling
Refrigerating the coffee concentrated solution in the storage container to a solid state;
s52: first stage drying
Removing water in a gaseous form by sublimation drying;
s53: second stage drying
Removing part of residual moisture by a desorption drying mode;
s6: discharging and sieving device
After freeze drying, obtaining a coffee powder secondary finished product in the form of powder agglomeration, and screening the coffee powder secondary finished product by a screening machine to obtain a powdered coffee powder finished product;
s6: inner package
Subpackaging the freeze-dried coffee powder into small bags under a vacuum condition;
s7: boxing and weighing
And filling the packaged small coffee packet powder into a packaging box according to the preset weight.
2. The production process of freeze-dried coffee powder according to claim 1, wherein the freeze-drying equipment comprises a freeze-dryer cabinet (3), the open end of the freeze-dryer cabinet (3) is hinged with a freeze-dryer cabinet cover (2) which is used in a matching manner, universal wheels (13) are mounted at corners of the bottom surface of the freeze-dryer cabinet (3), two first sliding rails (17) are symmetrically and fixedly mounted on the inner bottom surface of the freeze-dryer cabinet (3), a placing mechanism (4) is slidably mounted on the two first sliding rails (17), and the placing mechanism (4) is used for placing the coffee concentrated liquid to be dried;
place mechanism (4) including bottom plate (29), the bottom surface of bottom plate (29) is in the equal fixedly connected with mount pad (28) in the position that is close to its corner, rotate in mount pad (28) and install card wheel (27), and two card wheels (27) of same one side roll the card and establish on same first slide rail (17), and the top surface of bottom plate (29) is in stand (30) of the equal fixedly connected with in position that is close to its corner, four slidable mounting has multiunit storage component on stand (30), and the crisscross alignment installation of head and the tail on four stands (30) between two sets of adjacent storage components, storage component is used for holding the coffee concentrate.
3. The production process of the freeze-dried coffee powder as claimed in claim 2, wherein the storage assembly comprises a second support seat (32) and a drying disc (31), wherein a mounting groove (36) for mounting the drying disc (31) is formed in the top surface of the second support seat (32), one end of the mounting groove (36) is hollowed out, a flow guide block (34) is fixedly mounted at one end, away from the hollowed-out position, of the bottom surface of the mounting groove (36), a plurality of through holes (35) are formed in the top surface of the flow guide block (34), the through holes (35) are distributed in an array manner along the length direction of the flow guide block (34), damping sliding sleeves (33) are fixedly connected to the positions, into which the two ends of the second support seat (32) are opened, on the two side surfaces of the second support seat (32), and the four damping sliding sleeves (33) are respectively mounted on the peripheries of the four upright posts (30) in a damping sliding manner;
the bottom of through-hole (35) link up the bottom surface of mounting groove (36), and the bottom of through-hole (35) is provided with toper water conservancy diversion spare (37) with the coaxial setting of through-hole (35), toper water conservancy diversion spare (37) and the bottom surface fixed connection of supporting seat two (32).
4. The production process of the freeze-dried coffee powder as claimed in claim 3, wherein the drying disc (31) comprises a bottom disc (45), side baffles (46) are fixedly mounted on two sides of the top surface of the bottom disc (45), the side baffles (46) are slope plates, one end of each of the two side baffles (46) with the lower height is fixedly connected with a first end baffle (47) mounted on the top surface of the bottom disc (45), one end of each of the two side baffles (46) with the higher height is fixedly connected with a second end baffle (48) mounted on the top surface of the bottom disc (45), and a stirring assembly is arranged between the second end baffle (48) and the first end baffle (47) and is used for primarily crushing defective coffee powder after freeze drying.
5. The production process of the freeze-dried coffee powder as claimed in claim 4, wherein the stirring assembly comprises a rotating shaft (38), a rack (40) and a gear (42), a plurality of rotating shafts (38) arranged in parallel are rotatably connected between the second end baffle (48) and the first end baffle (47), the plurality of rotating shafts (38) are arrayed along the length direction of the second end baffle (48), and a plurality of stirring blades (39) are arrayed on the periphery of the rotating shafts (38) along the circumferential direction and the axial direction of the rotating shafts;
one end, close to the second end baffle (48), of the rotating shaft (38) rotatably penetrates through the second end baffle (48) and is fixedly provided with a gear (42), two ends of the outer side of the second end baffle (48) are fixedly provided with stop blocks (44), the racks (40) are slidably arranged in the two stop blocks (44), two ends of each rack (40) are fixedly provided with limiting sliding seats (43), and the racks (40) are meshed with the limiting sliding seats (43) simultaneously;
and a handle (41) is fixedly installed on one side, far away from the second end baffle (48), of the rack (40).
6. The production process of freeze-dried coffee powder according to claim 2, wherein two slots (18) are symmetrically formed in the bottom end of the open end of the freeze dryer cabinet (3), the two slots (18) are respectively located right below the two first slide rails (17), and the two slots (18) are used for connecting the support frame (1) used in cooperation with the clamping wheel (27).
7. The production process of the freeze-dried coffee powder as claimed in claim 6, wherein the support frame (1) comprises two insertion rods (24), one end of each of the two insertion rods (24) is fixedly connected with a connecting plate (23), and two ends of the bottom surface of each connecting plate (23) are fixedly connected with supporting feet (22);
one ends, far away from the supporting legs (22), of the two insertion rods (24) are respectively inserted into the two insertion grooves (18) in a sliding mode, second sliding rails (25) are fixedly installed on the peripheries of the insertion rods (24), and the second sliding rails (25) are aligned to the first sliding rails (17) in corresponding positions;
a plurality of fixing rods (26) for stabilizing the two insertion rods (24) are fixedly connected between the peripheries of the two insertion rods (24).
8. The production process of the freeze-dried coffee powder according to claim 3, wherein a pre-cooling mechanism is fixedly mounted on the top surface of the freeze dryer cabinet (3), the pre-cooling mechanism comprises a cooling pipe (6) and a liquid storage bin (8), the liquid storage bin (8) is arranged above the freeze dryer cabinet (3), a mounting ring (9) is fixedly mounted on the periphery of the liquid storage bin (8), and a plurality of support rods (10) are fixedly connected between the periphery of the mounting ring (9) and the top surface of the freeze dryer cabinet (3);
the cooling pipe (6) is fixedly connected with the liquid outlet end of the liquid storage bin (8), one end, far away from the liquid storage bin (8), of the cooling pipe (6) extends to a position close to the open end of the freeze dryer case (3), and one end, far away from the liquid storage bin (8), of the cooling pipe (6) is fixedly connected with a liquid guide pipe (5) used for injecting liquid into the drying disc (31);
and spiral fins (14) connected with the cooler are embedded in the inner wall of the cooling pipe (6).
9. The production process of the freeze-dried coffee powder as claimed in claim 8, wherein the cooling tube (6) is an S-shaped bent tube, a height difference is formed between two ends of the cooling tube (6), one end of the cooling tube (6) close to the liquid storage bin (8) is higher than one end of the cooling tube (6) connected with the liquid guide tube (5), and a plurality of first supporting seats (7) are fixedly connected between the periphery of the cooling tube (6) and the top surface of the freeze dryer cabinet (3).
10. The production process of the freeze-dried coffee powder as claimed in claim 2, wherein an annular rib (11) is fixedly installed on the inner side of the freeze dryer case cover (2), an annular groove (12) matched with the annular rib (11) is formed in the open end of the freeze dryer case (3), and a sealing strip (15) is fixedly installed in the annular groove (12);
freeze-dryer case lid (2) keep away from its one side fixedly connected with first connecting block (21) with the articulated department of freeze-dryer case (3), the screw thread runs through locking threaded rod (20) in first connecting block (21), the one end fixed mounting that locking threaded rod (20) are close to the freeze-dryer case lid (2) outside has locking knob (19), one side fixed mounting that freeze-dryer case (3) kept away from its and the articulated department of freeze-dryer case lid (2) has second connecting block (16) that uses with locking threaded rod (20) cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211257267.XA CN115444058A (en) | 2022-10-14 | 2022-10-14 | Production process of freeze-dried coffee powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211257267.XA CN115444058A (en) | 2022-10-14 | 2022-10-14 | Production process of freeze-dried coffee powder |
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| CN202211257267.XA Pending CN115444058A (en) | 2022-10-14 | 2022-10-14 | Production process of freeze-dried coffee powder |
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