CN116271887A - Coffee powder spray drying treatment device and process - Google Patents

Coffee powder spray drying treatment device and process Download PDF

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Publication number
CN116271887A
CN116271887A CN202310448258.7A CN202310448258A CN116271887A CN 116271887 A CN116271887 A CN 116271887A CN 202310448258 A CN202310448258 A CN 202310448258A CN 116271887 A CN116271887 A CN 116271887A
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CN
China
Prior art keywords
shielding cover
tank body
hot air
wall
coffee powder
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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CN202310448258.7A
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Chinese (zh)
Inventor
申远
袁帅
赵鹏
郑高飞
李善武
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Yunnan Taixian Biotechnology Co ltd
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Yunnan Taixian Biotechnology Co ltd
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Publication date
Application filed by Yunnan Taixian Biotechnology Co ltd filed Critical Yunnan Taixian Biotechnology Co ltd
Priority to CN202310448258.7A priority Critical patent/CN116271887A/en
Publication of CN116271887A publication Critical patent/CN116271887A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/18—Evaporating by spraying to obtain dry solids
    • 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
    • A23F5/34—Drying or concentrating coffee extract by spraying into a gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/0011—Heating features
    • B01D1/0041—Use of fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/30—Accessories for evaporators ; Constructional details thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Tea And Coffee (AREA)

Abstract

The invention relates to the technical field of drying equipment, in particular to a coffee powder spray drying treatment device and a coffee powder spray drying treatment process, comprising a tank body, a centrifugal spray pipe arranged in the middle of the top end of the tank body, a negative pressure discharge pipe arranged at the bottom end of the tank body and a hot air inlet pipe arranged at the top of one side of the tank body; the discharging part of the centrifugal spray pipe is positioned in the tank body, and spray fog drops to the periphery; the output end of the hot air inlet pipe extends to the inside of the tank body; a rotatable shielding cover is arranged outside the centrifugal spray pipe, the diameter of the shielding cover is sequentially increased from top to bottom, and a space for hot air to flow downwards is formed between the shielding cover and the circumferential inner wall of the tank body; through the setting of shielding cover, after the coffee feed liquid is through centrifugal spray pipe, can spray the droplet to its periphery, when the heavy droplet of mass was sprayed, can strike the inner wall of shielding cover and to low place landing to hang in the bottom edge of shielding cover, reduce the large tracts of land bonding material condition.

Description

Coffee powder spray drying treatment device and process
Technical Field
The invention relates to the technical field of drying equipment, in particular to a coffee powder spray drying treatment device and a coffee powder spray drying treatment process.
Background
The spray drying is that when the liquid raw material passes through the centrifugal spray head at a proper air inlet temperature, the liquid raw material is sprayed out in a fogdrop shape and leaves the atomizer to come to the middle part or the bottom of the tank cavity, the air outlet temperature continues to provide a heat source, most of water is removed at the moment that the fogdrop contacts with hot air, the fogdrop liquid continues to evaporate until the particle shell of the product is completely formed, and the coffee powder is usually formed by adopting the processing mode.
In the actual processing process, when the liquid raw material is sprayed to the periphery through the centrifugal spray head and sprayed out, fog drops with larger mass collide the inner wall of the tank body and adhere in the flight process, and along with continuous drying of the adhesive material at high temperature in the tank body, the fog drops lose viscosity and fall off after coking, and the quality and taste of the partially coked coffee particles are reduced.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The invention provides a coffee powder spray drying treatment device, which can prevent coffee liquid from adhering to the inner wall of a tank body and coking due to too long drying time, and the specific scheme is as follows:
a coffee powder spray drying treatment device comprises a tank body, a centrifugal spray pipe arranged in the middle of the top end of the tank body, a negative pressure discharge pipe arranged at the bottom end of the tank body and a hot air inlet pipe arranged at the top of one side of the tank body; the discharging part of the centrifugal spray pipe is positioned in the tank body, and spray fog drops to the periphery; the output end of the hot air inlet pipe extends to the inside of the tank body; the outside of centrifugal spraying pipe is equipped with rotatable shielding cover, the shielding cover is located the below of hot air-supply line, and the diameter of shielding cover increases from top to bottom in proper order, the opening that supplies the droplet whereabouts has been seted up to the bottom of shielding cover, form a space that hot air flow down between shielding cover and the jar body circumference inner wall.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the inner wall of the tank body is transversely provided with a transverse plate positioned below the shielding cover, the transverse plate is obliquely provided with a scraping blade, and the scraping blade is attached to the inner wall of the shielding cover after passing through an opening at the bottom of the shielding cover.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the thickness of the scraping blade is sequentially thinned towards the inner wall of the shielding cover.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: and the tank body is also provided with an air guide pipe, and the air guide pipe is used for conveying hot air output by the hot air inlet pipe to the middle part of the tank body.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the air guide pipe further comprises an inlet and an outlet, the inlet is located in a space formed between the shielding cover and the circumferential inner wall of the tank body, the outlet is located in the middle of the inner cavity of the tank body, and the outlet is further communicated with a two-way pipe which is vertically arranged.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the outside cover of centrifugal spray tube has the swivel, and the outer wall circumference of swivel has set up a plurality of connecting rods, and the tail end of a plurality of connecting rods is connected with the top of shielding cover.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the plurality of connecting rods are transversely provided with supporting rods, the tail ends of the supporting rods are provided with concave plates, and the concave parts of the concave plates are positioned on the output path of the hot air inlet pipe.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the back of the concave plate is a cambered surface.
As a preferable mode of the coffee powder spray drying treatment device of the invention, wherein: the inner wall of the shielding cover is coated with an anti-sticking coating.
A coffee powder spray drying treatment process is applied to the coffee powder spray drying treatment device, and the treatment process comprises the following steps:
s1, preheating the inside of a tank body through a hot air inlet pipe, and spraying out coffee feed liquid through a centrifugal spray pipe;
s2, the liquid sprayed in the step S1 is contacted with the tank body at high temperature and evaporated to particles, and after the liquid with large mass of fog drops collides with the inner wall of the shielding cover, the liquid forms irregular fog drops which are diffused to the periphery, and the liquid is continuously evaporated to the particles in the tank body;
s3, blowing air discharged by the hot air inlet pipe can flow through a space formed between the shielding cover and the circumferential inner wall of the tank body, negative pressure is formed at the bottom of the shielding cover in the hot air flowing process, and part of adhesive adhered to the inner wall of the shielding cover is attracted to fall.
Compared with the prior art, the invention has the following beneficial effects:
the device is through setting up of shielding cover, after the coffee feed liquid is through centrifugal spray pipe, can spray the droplet to its periphery, when the heavy droplet of mass was sprayed, can strike the inner wall of shielding cover and to low place landing to hang in the bottom edge of shielding cover, reduce the large tracts of land bonding material condition, the feed liquid is at the same time after colliding the shielding cover inner wall, the feed liquid is first bumped flat, then spread all around, the feed liquid just can fully contact evaporation and form solid particle with jar internal heat at the process of spreading, thereby drop downwards through self mass and negative pressure suction of negative pressure discharging pipe after forming the powder and collect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic diagram showing the overall structure of a spray-drying treatment device for coffee powder according to the present invention.
Fig. 2 is a schematic diagram of the internal structure of the tank in the coffee powder spray drying treatment apparatus of the present invention.
Fig. 3 is a schematic top view of a shielding cover in the coffee powder spray drying apparatus of the present invention.
Fig. 4 is a schematic view showing the internal structure of a shielding cover in the coffee powder spray drying treatment apparatus of the present invention.
Fig. 5 is a schematic view showing the axial structure of a wiper blade in the spray-drying treatment device for coffee powder according to the present invention.
Wherein, the reference numerals are as follows:
1. a tank body; 101. a centrifugal spray tube; 102. a negative pressure discharging pipe; 103. a hot air inlet pipe;
2. a shielding cover; 201. a swivel; 202. a connecting rod; 203. a concave plate;
3. a cross plate; 301. a wiper blade;
4. an air guide pipe; 401. an inlet; 402. a two-way pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Examples
Referring to fig. 1 to 5, the invention provides a coffee powder spray drying treatment device, which comprises a tank body 1, a centrifugal spray pipe 101 arranged in the middle of the top end of the tank body 1, a negative pressure discharge pipe 102 arranged at the bottom end of the tank body 1 and a hot air inlet pipe 103 arranged at the top of one side of the tank body 1, wherein the tank body 1 is divided into a columnar cavity and a conical cavity from top to bottom, and the negative pressure discharge pipe 102 is connected with an external negative pressure fan and pumps powder out of the tank body 1; the input end of the hot air inlet pipe 103 is connected with an external heating box and an air blower, air pumped by the air blower is firstly subjected to impurity removal, then the treated air is output through the heating box and the output end of the hot air inlet pipe 103, the output hot air can preheat the interior of the tank body 1, and meanwhile, the hot air is also a heat source for spray evaporation and drying of coffee; the discharging part of the centrifugal spray pipe 101 is positioned in the tank body 1 and sprays fog drops to the periphery; the above are all the prior art and will not be described in detail.
The output end of the hot air inlet pipe 103 extends to the inside of the tank body 1 and continuously blows hot air into the inside of the tank body 1; the outside of the centrifugal spray pipe 101 is provided with a rotatable shielding cover 2, the shielding cover 2 is positioned below the hot air inlet pipe 103, the diameter of the shielding cover 2 is sequentially increased from top to bottom (the shielding cover 2 is in an isosceles trapezoid shape under the view of a front section), the bottom of the shielding cover 2 is provided with an opening for mist drops to fall down, and a space for hot air to flow downwards is formed between the shielding cover 2 and the circumferential inner wall of the tank body 1; namely, after passing through the centrifugal spray pipe 101, the coffee feed liquid sprays mist drops to the periphery of the coffee feed liquid, when the mist drops with large mass are sprayed out, the mist drops impact the inner wall of the shielding cover 2, and as the diameter of the shielding cover 2 is sequentially increased from top to bottom, the inner wall of the shielding cover 2 is also sequentially increased, namely the wall thickness formed between the inner wall and the outer wall is consistent, so that the feed liquid on the inner wall of the shielding cover 2 always slides down and hangs at the bottom edge of the shielding cover 2, the condition of large-area adhesive materials is reduced, and meanwhile, the feed liquid is firstly flattened and then scattered to the periphery after impacting the inner wall of the shielding cover 2, and the feed liquid fully contacts with the heat in the tank body 1 to evaporate and form solid particles in the scattering process, so that the feed liquid drops downwards through the self mass and the negative pressure suction of the negative pressure discharge pipe 102 after forming powder;
moreover, the continuous blowing of the hot air inlet pipe 103 can be injected into the space formed between the shielding cover 2 and the circumferential inner wall of the tank body 1, and after passing through the narrower section between the outer ring at the bottom of the shielding cover 2 and the inner wall of the tank body 1 from top to bottom, the hot air can flow downwards and flow downwards to the lower part of the shielding cover 2, at the moment, the hot air can be attached to the inner wall of the tank body 1 and vertically move downwards, when flowing through the lower part of the shielding cover 2, the inner side of the shielding cover 2 can generate negative pressure, under the action of the negative pressure, powder on the inner side of the shielding cover 2 or attached to the inner wall is attracted to the inner wall of the tank body 1, and the hot air is attached to the inner wall of the tank body 1 and vertically moves downwards, so that a downwards conveying force is formed on the powder and the adhesive attached to the inner wall of the tank body 1.
Specifically, a swivel 201 is sleeved outside the centrifugal spray pipe 101, the centrifugal spray pipe 101 is fixed, the swivel 201 is rotationally connected with the centrifugal spray pipe 101, a plurality of connecting rods 202 are distributed on the circumference of the outer wall of the swivel 201, the tail ends of the plurality of connecting rods 202 are connected with the top end of the shielding cover 2, supporting rods are transversely arranged on the plurality of connecting rods 202, a concave plate 203 is arranged at the tail end of each supporting rod, and the concave part of the concave plate 203 is positioned on the output path of the hot air inlet pipe 103; that is, on the basis that the hot air inlet pipe 103 continuously blows, external driving is not used, the concave plate 203 can be blown to rotate through blowing, the concave plate 203 drives the connecting rod 202, the shielding cover 2 and the swivel 201 to rotate outside the centrifugal spray pipe 101, and mist drops or adhesive materials adhered to the inner wall of the connecting rod are thrown off under the rotating action of the connecting rod, so that molded powder is discharged to the negative pressure discharging pipe 102 along with the vertical downward blowing, and the adhesive materials are prevented from being adhered to the inner wall of the shielding cover 2 for heating and drying for a long time, so that the problem of coking of the coffee powder is solved.
The inner wall of the tank body 1 is transversely provided with a transverse plate 3 positioned below the shielding cover 2, the transverse plate 3 is obliquely provided with a scraping blade 301, and the scraping blade 301 is attached to the inner wall of the shielding cover 2 after passing through an opening at the bottom of the shielding cover 2; that is, on the basis of the rotation of the shielding cover 2, the inner ring wall of the shielding cover 2 is contacted with the scraping blade 301, the sticky material on the inner wall is removed through the scraping blade 301, and the sticky material falls and is collected through gravity after being separated from the inner wall of the shielding cover 2.
The thickness of the wiper 301 is sequentially thinned towards the direction of the inner wall of the shielding cover 2, and as one end of the wiper 301 contacted with the inner wall of the shielding cover 2 is thinner (the contact area of the wiper 301 and the shielding cover 2 is small), the resistance between the wiper 301 and the shielding cover 2 can be reduced, so that the shielding cover 2 can be driven to rotate all the time by the wind power continuously output by the hot air inlet pipe 103 without adding external driving.
In order to improve the utilization rate of hot air, the tank body 1 is further provided with an air guide pipe 4, the air guide pipe 4 is used for conveying the hot air output by the hot air inlet pipe 103 to the middle part of the tank body 1, the hot air is well known to have small density and can be distributed at the top of the tank body 1, and at the moment, the relative temperature of the top and the middle part of the tank body 1 can be kept constant through the arrangement of the air guide pipe 4.
The air guide pipe 4 further comprises an inlet 401 and an outlet, wherein the inlet 401 is positioned in a space formed between the shielding cover 2 and the circumferential inner wall of the tank body 1, the outlet is positioned in the middle of the inner cavity of the tank body 1, and the outlet is further communicated with a two-way pipe which is vertically arranged; that is, on the basis of continuous blowing of the hot air inlet pipe 103, part of air flows from the inlet 401 of the air guide pipe 4 to the outlet, and flows into the two-way pipe from the outlet, and then is divided into two air flows to be respectively discharged upwards/downwards, while in the processing process, when the centrifugal spray pipe 101 sprays mist drops to the periphery, xu Shuidi-shaped feed liquid directly drops from the bottom of the centrifugal spray pipe 101, the quality of the water-drop-shaped feed liquid is relatively large, the drying speed of the water-drop-shaped feed liquid is slower than that of the spray-shaped feed liquid, when the water-drop-shaped feed liquid vertically drops, the air in the tank 1 is disturbed by the upward air discharge of the two-way pipe, the dropping speed of the water-drop-shaped feed liquid is delayed, so that the water-drop-shaped feed liquid is fully evaporated and dried with the internal heat flow of the tank 1, and the downward air discharge of the two-way pipe is used for quickly collecting the powder suspended at the conical cavity of the tank 1 to the negative pressure discharge pipe 102 after forming, and discharging and collecting the powder through the negative pressure discharge pipe 102.
The back of the concave plate 203 is an arc surface, and the resistance of the concave plate 203 in the rotation process can be reduced by the arrangement of the arc surface, so that the shielding cover 2 can continuously rotate.
The inner wall of the shielding cover 2 is coated with an anti-sticking coating, the anti-sticking coating can be a Teflon coating and a ceramic coating, and the anti-sticking coating can be a non-stick pan in the prior art, so that the adhesion of coffee liquid on the inner wall of the shielding cover 2 is reduced, the situation that the liquid is coked in long-term adhesion is avoided, and the quality of raw materials is improved.
A spray drying treatment process of coffee powder is applied to the spray drying treatment device of the coffee powder, and the treatment process comprises the following steps:
s1, preheating the inside of a tank body 1 through a hot air inlet pipe 103, and spraying coffee feed liquid through a centrifugal spray pipe 101;
s2, the liquid sprayed in the step S1 is contacted with the tank body 1 at high temperature and evaporated to particles, and after the liquid with large mass of fog drops collides with the inner wall of the shielding cover 2, the liquid forms irregular fog drops which are diffused to the periphery, and the liquid is continuously evaporated to the particles in the tank body 1;
s3, blowing air discharged by the hot air inlet pipe 103 flows through a space formed between the shielding cover 2 and the circumferential inner wall of the tank body 1, negative pressure is formed at the bottom of the shielding cover 2 in the hot air flowing process, and part of sticky materials adhered to the inner wall of the shielding cover 2 are attracted to fall.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims (10)

1. A coffee powder spray drying treatment device, which is characterized in that: comprises a tank body, a centrifugal spray pipe arranged in the middle of the top end of the tank body, a negative pressure discharge pipe arranged at the bottom end of the tank body and a hot air inlet pipe arranged at the top of one side of the tank body;
the discharging part of the centrifugal spray pipe is positioned in the tank body, and spray fog drops to the periphery;
the output end of the hot air inlet pipe extends to the inside of the tank body;
the outside of centrifugal spraying pipe is equipped with rotatable shielding cover, the shielding cover is located the below of hot air-supply line, and the diameter of shielding cover increases from top to bottom in proper order, the opening that supplies the droplet whereabouts has been seted up to the bottom of shielding cover, form a space that hot air flow down between shielding cover and the jar body circumference inner wall.
2. The coffee powder spray-drying treatment apparatus of claim 1, wherein: the inner wall of the tank body is transversely provided with a transverse plate positioned below the shielding cover, the transverse plate is obliquely provided with a scraping blade, and the scraping blade is attached to the inner wall of the shielding cover after passing through an opening at the bottom of the shielding cover.
3. The coffee powder spray-drying treatment apparatus of claim 2, wherein: the thickness of the scraping blade is sequentially thinned towards the inner wall of the shielding cover.
4. The coffee powder spray-drying treatment apparatus of claim 1, wherein: and the tank body is also provided with an air guide pipe, and the air guide pipe is used for conveying hot air output by the hot air inlet pipe to the middle part of the tank body.
5. The coffee powder spray-drying treatment apparatus of claim 4, wherein: the air guide pipe further comprises an inlet and an outlet, the inlet is located in a space formed between the shielding cover and the circumferential inner wall of the tank body, the outlet is located in the middle of the inner cavity of the tank body, and the outlet is further communicated with a two-way pipe which is vertically arranged.
6. The coffee powder spray-drying treatment apparatus of claim 1, wherein: the outside cover of centrifugal spray tube has the swivel, and the outer wall circumference of swivel has set up a plurality of connecting rods, and the tail end of a plurality of connecting rods is connected with the top of shielding cover.
7. The coffee powder spray-drying treatment apparatus of claim 6, wherein: the plurality of connecting rods are transversely provided with supporting rods, the tail ends of the supporting rods are provided with concave plates, and the concave parts of the concave plates are positioned on the output path of the hot air inlet pipe.
8. The coffee powder spray-drying apparatus as recited in claim 7, wherein: the back of the concave plate is a cambered surface.
9. The coffee powder spray-drying treatment apparatus of claim 1, wherein: the inner wall of the shielding cover is coated with an anti-sticking coating.
10. A coffee powder spray drying process, applied to a coffee powder spray drying device as claimed in claim 1, characterized in that: the treatment process comprises the following steps:
s1, preheating the inside of a tank body through a hot air inlet pipe, and spraying out coffee feed liquid through a centrifugal spray pipe;
s2, the liquid sprayed in the step S1 is contacted with the tank body at high temperature and evaporated to particles, and after the liquid with large mass of fog drops collides with the inner wall of the shielding cover, the liquid forms irregular fog drops which are diffused to the periphery, and the liquid is continuously evaporated to the particles in the tank body;
s3, blowing air discharged by the hot air inlet pipe can flow through a space formed between the shielding cover and the circumferential inner wall of the tank body, negative pressure is formed at the bottom of the shielding cover in the hot air flowing process, and part of adhesive adhered to the inner wall of the shielding cover is attracted to fall.
CN202310448258.7A 2023-04-24 2023-04-24 Coffee powder spray drying treatment device and process Pending CN116271887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310448258.7A CN116271887A (en) 2023-04-24 2023-04-24 Coffee powder spray drying treatment device and process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310448258.7A CN116271887A (en) 2023-04-24 2023-04-24 Coffee powder spray drying treatment device and process

Publications (1)

Publication Number Publication Date
CN116271887A true CN116271887A (en) 2023-06-23

Family

ID=86816958

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310448258.7A Pending CN116271887A (en) 2023-04-24 2023-04-24 Coffee powder spray drying treatment device and process

Country Status (1)

Country Link
CN (1) CN116271887A (en)

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