CN220417918U

CN220417918U - Flash drying equipment

Info

Publication number: CN220417918U
Application number: CN202320107098.5U
Authority: CN
Inventors: 田皓; 郭金铖; 贾涛; 李治国; 张波; 宋静
Original assignee: Baotou Rare Earth Research Institute
Current assignee: Baotou Rare Earth Research Institute
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2024-01-30
Anticipated expiration: 2033-02-03

Abstract

The utility model discloses flash evaporation drying equipment which comprises a furnace body, a special-shaped pipeline and a blocking annular plate, wherein the furnace body is provided with a flash evaporation drying chamber; the furnace body is of a hollow cylindrical structure, and a discharge port is arranged at the top of one side of the furnace body; the blocking ring plate is arranged along the inner wall of the furnace body in a surrounding way, and the middle part of the blocking ring plate is of a hollow structure; the special-shaped pipeline is arranged opposite to the discharge port; the special-shaped pipeline is used for forming the powdery particle groups into dispersed powdery particles. The flash drying device can further reduce the agglomeration phenomenon.

Description

Flash drying equipment

Technical Field

The utility model relates to flash drying equipment.

Background

The flash dryer is a novel continuous drying device integrating drying, crushing and screening, and is particularly suitable for drying filter cake-shaped, pasty and slurry-shaped materials. Hot air enters an annular gap at the bottom of the drying chamber from an inlet pipe in a tangential direction, and rises spirally, meanwhile, powder particles (materials) are quantitatively added into the furnace body from a feeder and fully heat-exchanged with the hot air, smaller and lighter powder particles rise along with hot air, larger and wetter powder particles fall onto a stirrer in the furnace body to be mechanically crushed, then rise along with hot air, the powder particles are dried in the rising process, finally leave the furnace body to enter a gas-solid separation collector, the finished product is collected, and tail gas is discharged after being treated by a dust removing device.

The feeder conveys the material to be dried into the furnace body. The material to be dried is typically a powder particle, including dispersed powder particles and clusters of powder particles. If the powder particle clusters are larger, the powder particles fall down after entering the furnace body. If the mass of powder particles is small, it rises with the hot gas stream together with the dispersed powder particles. However, the powder particles in the powder particle group cannot be sufficiently contacted with the hot air stream and cannot be completely dried. The quantity of the powder particles entering the furnace body is large, and the powder particles are extruded together in the rising process. Because the powder particles are mutually shielded, partial water of the powder particles is extruded together without complete evaporation, and the surfaces of the powder particles are adhered to form an agglomeration phenomenon. If the powder particles are agglomerated, not only the drying effect but also the quality of the final product is affected.

CN111715199a discloses a flash dryer, it includes flash drying body, classification ring, breaks up subassembly, air inlet distributor, is equipped with the solid phase entry on the flash drying body rampart, flash drying body top is equipped with the gaseous phase export, and flash drying body is the cavity barrel, installs classification ring in the upper portion of flash drying body inner chamber, is equipped with the taper bottom surface in the bottom of flash drying body inner chamber, breaks up the subassembly and breaks up main shaft, driving motor, breaks up the blade including breaking up, establishes the air inlet distributor in flash drying body outside bottom cover. CN102020301a discloses a flash dryer, a central cylinder is arranged in the flash dryer, and an annular baffle classifier is arranged on the central cylinder; the material scattering machine is arranged on the inner bottom shaft of the flash evaporation dryer, the air flow distribution chamber is arranged at the bottom of the flash evaporation dryer, and the bottom surface of the air flow distribution chamber is conical. The problem of agglomeration of the powder particles in the two flash dryers is still to be further improved.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a flash drying apparatus which can further reduce the agglomeration phenomenon.

The utility model achieves the aim through the following technical scheme.

The utility model provides flash drying equipment which comprises a furnace body, wherein the flash drying equipment further comprises a special-shaped pipeline and a blocking annular plate;

the furnace body is of a hollow cylindrical structure, and a discharge port is arranged at the top of one side of the furnace body;

the blocking ring plate is arranged along the inner wall of the furnace body in a surrounding way, and the middle part of the blocking ring plate is of a hollow structure;

the special-shaped pipeline is arranged opposite to the discharge port; the special-shaped pipeline is used for forming powder particles into dispersed powder particles; the special-shaped pipeline comprises a feeding part, a straight-through part, a bending part and a discharging part which are sequentially connected; the feeding part is provided with an inlet end, and the inlet end is positioned below the blocking annular plate and is used for enabling powdery particle clusters to enter the special-shaped pipeline; the straight-through part is in arc connection with the feeding part; the through part is positioned above the feeding part, and most of the through part is positioned above the blocking ring plate; the bent part and the straight-through part are in smooth transition connection; one end of the discharging part is an outlet end part, and the outlet end part faces the discharging opening and is used for discharging dispersed powdery particles.

According to the flash drying apparatus of the present utility model, preferably:

the discharging part further comprises a middle part and a connecting part; the middle part is positioned between the outlet end part and the connecting part, and the middle part is connected with the bending part; the connecting part is communicated with the straight-through part;

the special-shaped pipeline further comprises a separation net; the separation net is arranged at the position of the connecting part, which is close to the straight-through part.

the furnace body is provided with a side wall, the side wall is surrounded to form the hollow cylindrical structure, and the hollow cylindrical structure is provided with an accommodating space;

the feeding part is arranged in the side wall of the furnace body, and the inlet end of the feeding part is communicated with the accommodating space; one part of the straight-through part is positioned in the side wall of the furnace body, and the other part of the straight-through part is positioned in the accommodating space.

According to the flash drying apparatus of the present utility model, preferably, the baffle ring plate has a bottom wall and an inner side wall; the bottom wall is connected with the inner wall of the furnace body, and the inner side wall is surrounded to form the hollow structure; the baffle ring plate has an inward concave structure with a decreasing level from the bottom wall to the inner side wall.

the lower edge of the bottom wall is provided with a highest point A and a lowest point B, and a horizontal height difference is arranged between the highest point A and the lowest point B;

the feeding part is obliquely arranged; the inlet end of the feeding part is positioned below the highest point A and is close to the highest point A; the lowest point B is located below the discharge hole.

The flash drying apparatus according to the present utility model preferably further comprises a cover plate; the cover plate is arranged above the furnace body and is used for sealing the furnace body.

The flash drying apparatus according to the present utility model preferably further comprises a cover plate and a vibration mechanism;

one side of the cover plate is fixed on the cover plate, and the other side of the cover plate is connected with the blocking ring plate; a closed space is formed among the cover plate, the blocking ring plate and the inner wall of the furnace body; the closed space is used for protecting the special-shaped pipeline, and the outlet end part of the discharging part penetrates through the cover plate;

the vibrating mechanism is arranged below the discharging part and used for driving the special-shaped pipeline to vibrate.

According to the flash drying device of the present utility model, preferably, the vibration mechanism comprises a shaft, a sleeve, a slide bar, a spring, an elastic ball, a fan blade and a protective cover;

the shaft rod horizontally penetrates through the cover plate, one end of the shaft rod is provided with a fan blade, and the other end of the shaft rod is vertically connected with the sleeve; the fan blades are arranged to be rotatable; the shaft rod is arranged to be rotatable with the rotation of the fan blade; the sleeve is arranged to be rotatable with the rotation of the shaft;

the sliding rod is arranged in the sleeve in a sliding way; a spring is arranged between the sliding rod and the bottom of the sleeve; one end of the sliding rod, which is far away from the spring, is connected with an elastic ball block; the elastic ball block is arranged to be in intermittent contact with the special-shaped pipeline;

the protective cover is fixed on the cover plate and covers the outside of the fan blade.

a feed inlet is formed in the lower part of one side of the furnace body;

the flash drying equipment also comprises a screw feeder and an induced-draft chamber; the screw feeder is arranged to feed the material to be dried into the accommodating space through the feed inlet; the induced draft chamber is connected with the lower part of the furnace body, and the induced draft chamber is communicated with the accommodating space.

The flash drying device according to the utility model preferably further comprises a base, a stirring device and a conical surface;

the base is arranged below the furnace body and the induced draft chamber and is provided with a base accommodating space;

the stirring equipment is positioned below the screw feeder; the stirring equipment comprises a motor, a stirring shaft and stirring paddles; the motor is arranged in the base accommodating space and used for controlling the stirring shaft to rotate; the stirring shaft is vertically arranged, and most of the stirring shaft is positioned in the furnace body; the stirring paddles are uniformly arranged on the stirring shaft;

the conical surface is arranged around the stirring shaft and is positioned below the stirring blade.

The flash drying device of the utility model can basically avoid the agglomeration phenomenon of the powder to be dried. According to the preferable technical scheme, the special-shaped pipeline is arranged to drive the powder particle groups to scatter, so that the drying effect is improved. Furthermore, the cover plate and the vibration mechanism are arranged, so that the special-shaped pipeline can be driven to vibrate by the wind power of hot air flow, powder particles attached to the inner wall of the special-shaped pipeline are enabled to be separated quickly, the working efficiency is improved, the special-shaped pipeline is vibrated, the powder particle clusters are enabled to be affected by vibration when impacting the inner wall of the special-shaped pipeline, the powder particles can be scattered more quickly, and the drying effect is guaranteed.

Drawings

Fig. 1 is a schematic structural view of a flash drying apparatus according to the present utility model.

Fig. 2 is a schematic structural view of a special-shaped pipeline according to the present utility model.

FIG. 3 is a schematic view of the relative positions of the baffle ring plate, the profiled conduit and the discharge orifice of the present utility model.

Fig. 4 is a schematic structural view of another flash drying apparatus according to the present utility model.

Fig. 5 is a partial schematic view of fig. 4.

Fig. 6 is an enlarged partial schematic view of fig. 4.

The reference numerals are explained as follows:

1-a furnace body and 11-a discharge hole; 2-an air introducing chamber; 3-stirring equipment, 31-motors, 32-stirring shafts and 33-stirring blades; 4-screw feeder; 5-special-shaped pipelines, 51-feeding parts, 52-through parts, 53-bending parts, 54-discharging parts and 55-separating nets; 6-a baffle ring plate, namely an A-highest point and a B-lowest point; 7-vibration mechanism, 71-shaft rod, 72-sleeve, 73-slide bar, 74-spring, 75-elastic ball block, 76-fan blade and 77-protective cover; 8-cover plate; 9-a base; 10-conical surface; 20-cover plate.

Detailed Description

The utility model will be further described with reference to the drawings and the specific embodiments, but the scope of the utility model is not limited thereto.

The flash drying equipment can be used for solving the problem that powder particles are agglomerated in the flash process. The flash drying equipment comprises a furnace body, a cover plate, an air draft chamber, stirring equipment, a screw feeder, a base, a conical surface, a blocking annular plate and a special-shaped pipeline. Optionally, a cover plate and a vibration mechanism are also included. The following is a detailed description.

Furnace body and cover plate

The furnace body of the utility model has side walls. The side walls are enclosed to form a hollow cylindrical structure. The hollow cylindrical structure forms an accommodation space inside. One side of the furnace body is provided with a discharge hole at the top and a feed inlet at the lower part. The discharge hole and the feed inlet are arranged on the same side. In the utility model, the cover plate is arranged above the furnace body and is used for sealing the furnace body.

Barrier ring plate and special-shaped pipeline

The baffle ring plate is arranged along the inner wall of the furnace body in a surrounding way. The surrounding arrangement means that the baffle ring plate extends along the inner wall of the furnace body to form a ring, and the ring is not circular.

The middle part of the separation annular plate is arranged into a hollow structure. In certain embodiments, the central axis of the hollow structure coincides with the central axis of the furnace body. The separation annular plate is provided with a bottom wall and an inner side wall, the bottom wall is connected with the inner wall of the furnace body, and the inner side wall encloses into the hollow structure. The baffle ring plate is of an inward concave structure with the horizontal height from the bottom wall to the inner side wall continuously decreasing.

In certain preferred embodiments, the lower edge of the bottom wall has a highest point a and a lowest point B with a level difference between the highest point a and the lowest point B. The lowest point B is positioned below the discharge hole. The highest point a is disposed opposite to the lowest point B. The arrangement of the blocking ring plate can be used for guiding the powdery particle clusters into the special-shaped pipeline.

The special-shaped pipeline is arranged on the other side of the furnace body and is opposite to the discharge hole. The special-shaped pipeline is arranged on the inner wall of the furnace body. The special-shaped pipeline is used for forming the powdery particle groups into dispersed powdery particles.

The special-shaped pipeline comprises a feeding part, a straight-through part, a bending part and a discharging part which are connected in sequence. The feeding part is provided with an inlet end, and the inlet end is positioned below the blocking annular plate and is used for enabling powdery particle clusters to enter the special-shaped pipeline. The feeding part is obliquely arranged. The straight-through part is in arc connection with the feeding part. According to one embodiment of the utility model, the angle between the axis of the through-going part and the axis of the feed-through part is 85-95 °. The through part is obliquely arranged. The through portion is located above the feed portion, and a majority of the through portion is located above the blocker ring plate. The bent part and the straight-through part are connected in a smooth transition way. In certain embodiments, a U-like structure is formed between the curved portion and the straight portion. One end of the discharging part is an outlet end part, and the outlet end part faces the discharging opening and is used for discharging dispersed powdery particles. The discharging part further comprises a middle part and a connecting part. The intermediate portion is located between the outlet end portion and the connecting portion. The middle part is connected with the bending part of the special-shaped pipeline. The connecting part is communicated with the straight-through part. The separation net is arranged at the position of the connecting part close to the straight-through part. The screen is used for preventing powder particles from entering the discharging part, but hot air flows can still enter the discharging part through the screen. The straight-through part and the discharging part are both in straight cylindrical structures. The angle between the axis of the through-going part and the axis of the discharge part is 35-65 deg., preferably 45-65 deg.. This is advantageous in driving the powder particle clusters apart.

In certain embodiments, the feed portion is disposed in a sidewall of the furnace body, and an inlet end of the feed portion is in communication with the receiving space. The inlet end of the feeding part is positioned below the highest point A and is close to the highest point A. One part of the through part is positioned in the side wall of the furnace body, and the other part is positioned in the accommodating space. The discharge portion includes an outlet end portion, an intermediate portion, and a connecting portion. The intermediate portion is located between the outlet end portion and the connecting portion. The middle part is connected with the bending part of the special-shaped pipeline. The outlet end faces the discharge opening for discharging the dispersed powder particles. The connecting part is communicated with the straight-through part. The separation net is arranged at the position of the connecting part close to the straight-through part.

The present utility model has found that some of the material to be dried that enters the furnace forms clusters of powder particles (also called "agglomerated material") and other dispersed powder particles. If the powder particle clusters are smaller, they can still rise with the hot gas flow. Under the action of centrifugal force, the dispersed powdery particles directly move upwards through the hollow structure of the blocking annular plate, and the powdery particle clusters move to the inner wall of the furnace body. The powder particle clusters collide with the inner wall of the furnace body only by virtue of centrifugal force, and the powder particle clusters cannot be scattered. During the rising process of the powder particle group, the powder particle group is blocked by the blocking ring plate to rise. The lower extreme of separation annular plate sets up to one end height and the other end is low, and the powdered particle group can be fast to the highest point removal, then send into the inside of dysmorphism pipeline.

The powdery particle group enters the special-shaped pipeline through the feeding part, is in arc-shaped steering impact contact with the feeding part and enters the through part, and the powdery particle group continuously advances and enters the bending part due to the existence of the separation net. Part of hot air flow directly enters the discharging part, and the hot air flow continuously blows, so that powder particle clusters can not be blocked on the separation net. The hot gas flow and the powdery particle mass enter the bending portion. Because the bending part is in a bending ring shape, the hot air flow and the powdery particle clusters can be contacted with the side wall of the bending part, so that the direction and the speed of the hot air flow and the powdery particle clusters can be changed. The clusters of powder particles are constantly impacted so that the clusters of powder particles are dispersed to form dispersed powder particles. Because the density of the gas is smaller than that of the material, the gas is easier to turn, after the hot gas flow and the powder particle groups collide with the side wall of the bending part, the hot gas flow forwards at a faster speed, the hot gas flow is wrapped by moisture to advance, and the subsequently entered hot gas flow contacts with the dispersed powder particles again, so that a good drying effect is realized. The powder particle clusters are scattered at the bending part and enter the discharging part in the form of scattered powder particles, the powder particles are contacted with hot air flow passing through the separation net to form secondary drying, the powder particles in the bending part are prevented from being incompletely dried, and meanwhile, the hot air flow blows out the powder particles. Because the hot air flow continuously blows, the inside of the special-shaped pipeline can not be blocked, and the drying effect is improved.

If no special-shaped pipeline is arranged, only the mode of increasing the air inlet temperature is adopted, the air inlet temperature is too high, the moisture on the surface of the powdery particle group evaporates too fast, the surface of the powdery particle group is hard shell due to excessive drying, then the powdery particle group is cracked in the drying process, the particle size is increased due to agglomeration adhesion, and the drying effect is affected. In addition, too high a temperature tends to cause denaturation of the powdery particles. According to the utility model, the special-shaped pipeline is arranged, so that the material to be dried can be dried at a proper temperature, the dispersion and drying of the powdery particles are ensured, and the denaturation of the powdery particles is avoided.

Cover plate and vibration mechanism

In certain embodiments, the flash drying apparatus of the present utility model further comprises a hood plate and a vibration mechanism. Therefore, the particles can be prevented from being in contact with the outside of the special-shaped pipeline, and the special-shaped pipeline is vibrated by the vibration mechanism, so that the powdery particle clusters are impacted and dispersed in the special-shaped pipeline.

One side of the cover plate is fixed on the cover plate, and the other side of the cover plate is connected with the blocking ring plate. A closed space is formed among the cover plate, the blocking ring plate and the inner wall of the furnace body. The airtight space is used for protecting the special-shaped pipeline, and the outlet end part of the discharging part penetrates through the cover plate. The setting of cover plate can avoid the outside contact of powdery granule and dysmorphism pipeline, can prolong the life of dysmorphism pipeline.

The vibrating mechanism is arranged below the discharging part and is used for driving the special-shaped pipeline to vibrate. The vibration mechanism comprises a shaft lever, a sleeve, a slide bar, a spring, an elastic ball block, fan blades and a protective cover. The axostylus axostyle level runs through the cover plate, and the one end of axostylus axostyle is provided with the flabellum, and the other end is connected with the sleeve is perpendicular. The fan blades are arranged to be capable of rotating under the drive of hot air flow. The shaft is configured to be rotatable as the fan blades rotate. The sleeve is arranged to be rotatable with rotation of the shaft. The slide bar is arranged in the sleeve in a sliding way. A spring is arranged between the sliding rod and the bottom of the sleeve. The compression and rebound directions of the spring are consistent with the length direction of the sleeve. One end of the sliding rod, which is far away from the spring, is connected with the elastic ball block. The elastic ball block is arranged to be in intermittent contact with the special-shaped pipeline. The protective cover is fixed on the cover plate and covers the outside of the fan blade.

The utility model discovers that the powder particles in the powder particle clusters are not dried completely and are easy to attach to the inner wall of the special-shaped pipeline, and can be separated under the impact of air flow and the collision of other powder particles, so that the powder particles are separated from the inner wall of the special-shaped pipeline in a time period, and the inside of the special-shaped pipeline is possibly blocked for a short time, thereby influencing the working efficiency. According to the utility model, through the vibration mechanism, the special-shaped pipeline is driven to vibrate by the wind power of hot air flow, so that powder particles attached to the inner wall of the special-shaped pipeline are quickly separated, and the working efficiency is improved. Through special-shaped pipeline vibrations, can make the powdery granule group strike the special-shaped pipeline inner wall when, receive vibrations influence, can scatter more fast, guarantee dry effect.

The working principle of the vibration mechanism of the utility model is as follows:

the hot air current drives the flabellum to rotate, and the rotation of flabellum drives the axostylus axostyle rotation for the sleeve rotates around the axostylus axostyle, lets elasticity ball piece constantly contact and separate with special-shaped pipeline, and the elasticity ball piece can all drive the slide bar and remove when contacting with special-shaped pipeline at every turn, lets the spring shrink, until elasticity ball piece and special-shaped pipeline separation, the spring resets, so relapse, thereby makes special-shaped pipeline vibrations, and the powdery granule group is inside the inside striking dispersion with the inner wall of special-shaped pipeline with special-shaped pipeline.

Air-inducing chamber and screw feeder

The screw feeder of the present utility model is configured to feed the material to be dried into the accommodating space through the feed port. The air exhaust chamber is connected with the lower part of the furnace body and is communicated with the accommodating space.

In the utility model, hot air flows into the induced air chamber and rises in the accommodating space in a spiral mode, the spiral feeder can cut up materials to be dried for the first time, then the materials are sent into the accommodating space, larger wet powdery materials fall onto stirring equipment in the furnace body and are mechanically broken under the action of the stirring equipment, and then rise along with the hot air flows, and the powdery materials are dried in the rising process. In the present utility model, the structures of the screw feeder and the draft chamber are not particularly limited, and those known in the art may be employed.

Base, stirring equipment and conical surface

The base is arranged below the furnace body and the induced draft chamber, and is provided with a base accommodating space. This facilitates the installation of the stirring device.

The stirring device of the utility model is positioned below the screw feeder. In the present utility model, the structure of the stirring device is not particularly limited, and those known in the art can be employed.

In certain embodiments, the stirring apparatus includes a motor, a stirring shaft, and stirring paddles. The motor is arranged in the base accommodating space and used for controlling the stirring shaft to rotate. The stirring shaft is vertically arranged, and most of the stirring shaft is positioned in the accommodating space. Stirring paddles are uniformly arranged on the stirring shaft.

The conical surface of the utility model is arranged around the stirring shaft and is positioned below the stirring blade. Thus being beneficial to improving the drying efficiency of the powder material. The conical surface is in an inverted funnel-shaped structure.

Example 1

Fig. 1 is a schematic structural view of a flash drying apparatus according to the present utility model. Fig. 2 is a schematic structural view of a special-shaped pipeline according to the present utility model. FIG. 3 is a schematic view of the relative positions of the baffle ring plate, the profiled conduit and the discharge orifice of the present utility model.

As shown in fig. 1 and 2, the flash drying device of the present utility model comprises a furnace body 1, a draft chamber 2, a stirring device 3, a screw feeder 4, a special-shaped pipe 5, a baffle ring plate 6, a cover plate 8, a base 9 and a conical surface 10.

The furnace body 1 has a side wall, which is surrounded by a hollow cylindrical structure. The hollow cylindrical structure has an accommodation space. A discharge port 11 is provided at the top of one side of the furnace body 1, and a feed port (not shown) is provided at the lower part.

As shown in fig. 1 and 3, a blocking ring plate 6 is circumferentially arranged on the inner wall of the furnace body 1, and the middle part of the blocking ring plate 6 is arranged to be a hollow structure. The baffle ring plate 6 has a bottom wall and an inner side wall. The inner side wall is enclosed to form the hollow structure. The bottom wall is connected with the inner wall of the furnace body 1. The baffle ring plate 6 has an inward concave structure whose level from the bottom wall to the inner side wall is continuously lowered. The lower edge of the bottom wall has a highest point A and a lowest point B with a level difference therebetween. The lowest point B is located below the discharge opening 11.

As shown in fig. 1 to 3, the special-shaped duct 5 is provided on the other side of the furnace body 1, which is disposed opposite to the discharge port 11. The shaped pipe 5 forms the mass of powder particles into dispersed powder particles. The special-shaped pipeline 5 comprises a feeding part 51, a straight-through part 52, a bending part 53 and a discharging part 54 which are connected in sequence. The feed portion 51 has an inlet end located below the baffle ring plate 6 for the powder particle clusters to enter the profiled conduit 5. The feeding portion 51 is provided in a side wall of the furnace body 1, and an inlet end communicates with the accommodation space of the furnace body 1. The feed portion 51 is disposed obliquely. The inlet end of the feed portion 51 is located below the highest point a, near the highest point a. The through portion 52 is disposed obliquely. The through portion 52 is located above the feed portion 51, and most of the through portion 52 is located above the baffle ring plate 6. Part of the through portion 52 is located in the side wall of the furnace body 1, and the other part is located in the accommodation space of the furnace body 1. The bent portion 53 and the through portion 52 form a U-like structure therebetween. The discharge portion 54 includes an outlet end portion, an intermediate portion, and a connecting portion. The intermediate portion is located between the outlet end portion and the connecting portion. The intermediate portion is connected to the curved portion 53. The outlet end is directed towards the discharge opening 11 for discharging the dispersed powder particles. The connecting portion communicates with the through portion 52. A spacer mesh 55 is provided at the connection.

The cover plate 8 is arranged above the furnace body 1 and is used for sealing the furnace body 1.

The screw feeder 4 adds the material to be dried into the accommodation space of the furnace body 1 through the feed inlet of the furnace body 1. The air inducing chamber 2 is connected with the lower part of the furnace body 1 and is communicated with the accommodating space of the furnace body 1.

The base 9 is arranged below the furnace body 1 and the induced draft chamber 2, and the base 9 is provided with a base accommodating space.

The stirring device 3 is located below the screw feeder 4. The stirring device 3 comprises a motor 31, a stirring shaft 32 and stirring blades 33. The motor 31 is disposed in the base accommodating space for controlling the rotation of the stirring shaft 32. The stirring shaft 32 is vertically arranged, and most of the stirring shaft 32 is positioned in the furnace body 1. The stirring blades 33 are uniformly arranged on the stirring shaft 32. The conical surface 10 is arranged around the stirring shaft 32 and below the stirring blade 33.

Example 2

The rest is the same as in example 1 except for the following settings:

fig. 4 is a schematic structural view of another flash drying apparatus according to the present utility model. Fig. 5 is a partial schematic view of fig. 4. Fig. 6 is an enlarged partial schematic view of fig. 4. As shown in fig. 4 to 6, the flash drying apparatus of the present embodiment further includes a hood plate 20 and a vibration mechanism 7. One side of the cover plate 20 is fixed on the cover plate 8, and the other side is connected with the baffle ring plate 6. A closed space is formed among the cover plate 20, the baffle ring plate 6 and the inner wall of the furnace body 1. The closed space is used for protecting the special-shaped duct 5, and the outlet end of the discharge portion 54 of the special-shaped duct 5 penetrates the cover plate 20.

As shown in fig. 6, the vibration mechanism 7 is disposed below the discharging portion 54, and is used for driving the special-shaped pipe 5 to vibrate. The vibration mechanism 7 includes a shaft 71, a sleeve 72, a slide bar 73, a spring 74, an elastic ball 75, a fan blade 76, and a shield 77. The shaft 71 is horizontally disposed and penetrates the cover plate 20, one end of the shaft 71 is connected with a fan blade 76, and the other end is vertically connected with the sleeve 72. The fan blades 76 can rotate under the drive of the hot air flow. The shaft 71 can rotate as the fan blade 76 rotates. The sleeve 72 is rotatable as the shaft 71 rotates. The slide bar 73 is slidably disposed in the sleeve 72, and a spring 74 is disposed between the slide bar 73 and the bottom of the sleeve 72. The slide bar 73 has a T-shaped structure. The end of the slide bar 73 remote from the spring 74 is connected to a resilient ball 75. The elastic ball 75 can intermittently contact the discharge portion 54 of the shaped pipe 5. The shield 77 is fixed to the cover plate 20 and covers the outside of the fan blades 76.

The present utility model is not limited to the above-described embodiments, and any modifications, improvements, substitutions, and the like, which may occur to those skilled in the art, fall within the scope of the present utility model without departing from the spirit of the utility model.

Claims

1. The flash drying equipment comprises a furnace body and is characterized by further comprising a special-shaped pipeline and a blocking annular plate;

the special-shaped pipeline is arranged opposite to the discharge port; the special-shaped pipeline is used for forming powder particles into dispersed powder particles; the special-shaped pipeline comprises a feeding part, a straight-through part, a bending part and a discharging part which are sequentially connected; the feeding part is provided with an inlet end, and the inlet end is positioned below the blocking annular plate and is used for enabling powdery particle clusters to enter the special-shaped pipeline; the straight-through part is in arc connection with the feeding part; the through part is positioned above the feeding part, and most of the through part is positioned above the blocking ring plate; the bending part is in smooth transition connection with the straight-through part; one end of the discharging part is an outlet end part, and the outlet end part faces the discharging opening and is used for discharging dispersed powdery particles.

2. Flash drying apparatus according to claim 1, characterized in that:

3. Flash drying apparatus according to claim 2, characterized in that:

4. The flash drying apparatus of claim 2, wherein the baffle ring plate has a bottom wall and an inner side wall; the bottom wall is connected with the inner wall of the furnace body, and the inner side wall is surrounded to form the hollow structure; the baffle ring plate has an inward concave structure with a decreasing level from the bottom wall to the inner side wall.

5. The flash drying apparatus according to claim 4, wherein:

6. The flash drying apparatus of claim 5, further comprising a cover plate; the cover plate is arranged above the furnace body and is used for sealing the furnace body.

7. The flash drying apparatus of claim 6, further comprising a hood plate and a vibration mechanism;

8. The flash drying apparatus of claim 7, wherein the vibration mechanism comprises a shaft, a sleeve, a slide bar, a spring, a resilient ball, a fan blade, and a shield;

9. A flash drying apparatus according to claim 3, wherein:

a feed inlet is formed in the lower part of one side of the furnace body;

10. The flash drying apparatus of claim 9, further comprising a base, a stirring apparatus, and a conical surface;