Flash drying equipment

Abstract

The present invention discloses a flash drying device, which comprises a furnace body, a special-shaped pipe and a barrier ring plate; the furnace body is a hollow cylindrical structure, and a discharge port is arranged at the top of one side thereof; the barrier ring plate is arranged around the inner wall of the furnace body, and the middle part of the barrier ring plate is arranged as a hollow structure; the special-shaped pipe is arranged opposite to the discharge port; the special-shaped pipe is used to form powder particles into dispersed powder particles. The flash drying device of the present invention can further reduce the agglomeration phenomenon.

Description

Technical Field

[0001] The invention relates to flash drying equipment. Background Art

[0002] Flash dryer is a new type of continuous drying equipment integrating drying, crushing and screening, which is particularly suitable for drying filter cake, paste and slurry materials. Hot air enters the annular gap at the bottom of the drying chamber from the inlet pipe in a tangential direction and rises in a spiral shape. At the same time, powder particles (materials) are quantitatively added into the furnace body by the feeder and fully exchange heat with the hot air. Smaller and lighter powder particles rise with the hot air flow, and larger and wetter powder particles fall onto the agitator inside the furnace body and are mechanically crushed, and then rise with the hot air flow. The powder particles are dried in the process of rising, and finally leave the furnace body and enter the gas-solid separation collector, where the finished products are collected, and the tail gas is discharged after being treated by the dust removal device.

[0003] The feeder conveys the material to be dried into the furnace body. The material to be dried is usually powder particles, including dispersed powder particles and powder particle clusters. If the powder particle cluster is large, it will fall after entering the furnace body. If the powder particle cluster is small, it will rise with the dispersed powder particles along with the hot air flow. However, the powder particles in the powder particle cluster cannot fully contact the hot air flow and cannot be completely dried. There are a lot of powder particles entering the furnace body, and the powder particles will be squeezed together during the rising process. Due to the mutual shielding between the powder particles, the moisture of some powder particles is not completely evaporated and squeezed together, and the surface of the powder particles adheres to form agglomeration. If the powder particles agglomerate, it will not only affect the drying effect, but also affect the quality of the final product.

[0004] CN111715199A discloses a flash dryer, which includes a flash dryer body, a grading ring, a breaking component, and an air inlet distributor. A solid phase inlet is provided on the ring wall of the flash dryer body, and a gas phase outlet is provided on the top of the flash dryer body. The flash dryer body is a hollow cylinder, and a grading ring is installed on the upper part of the inner cavity of the flash dryer body. A conical bottom surface is provided at the bottom of the inner cavity of the flash dryer body. The breaking component includes a breaking spindle, a driving motor, and breaking blades. An air inlet distributor is sleeved on the outer bottom of the flash dryer body. CN102020301A discloses a flash dryer, wherein a central cylinder is provided inside the flash dryer, and a circular baffle classifier is provided on the top of the central cylinder; a material breaker is provided on the bottom shaft of the flash dryer, and an air flow distribution chamber is provided at the bottom of the flash dryer, and the bottom surface of the air flow distribution chamber is conical. The agglomeration problem of powder particles in the above two flash dryers still needs to be further improved. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a flash drying device, which can further reduce the agglomeration phenomenon.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions.

[0007] The present invention provides a flash drying device, which comprises a furnace body, and the flash drying device also comprises a special-shaped pipeline and a barrier ring plate;

[0008] The furnace body is a hollow cylindrical structure, and a discharge port is provided at the top of one side thereof;

[0009] The blocking ring plate is arranged around the inner wall of the furnace body, and the middle part of the blocking ring plate is arranged as a hollow structure;

[0010] The special-shaped pipe is arranged opposite to the discharge port; the special-shaped pipe is used to form powdery particle clusters into dispersed powdery particles; the special-shaped pipe includes a feed portion, a straight-through portion, a curved portion and a discharge portion connected in sequence; the feed portion has an inlet end, which is located below the blocking ring plate and is used to allow the powdery particle clusters to enter the special-shaped pipe; the straight-through portion and the feed portion are connected in an arc shape; the straight-through portion is located above the feed portion, and most of the straight-through portion is located above the blocking ring plate; the curved portion and the straight-through portion are smoothly transitionally connected; one end of the discharge portion is an outlet end, which faces the discharge port and is used to discharge dispersed powdery particles.

[0011] According to the flash drying equipment of the present invention, preferably:

[0012] The discharge portion further comprises a middle portion and a connecting portion; the middle portion is located between the outlet end and the connecting portion, and the middle portion is connected to the curved portion; the connecting portion is connected to the straight portion;

[0013] The special-shaped pipe also includes a partition net; the partition net is arranged at a position of the connecting portion close to the straight-through portion.

[0014] According to the flash drying equipment of the present invention, preferably:

[0015] The furnace body has a side wall, the side wall encloses the hollow cylindrical structure, and the hollow cylindrical structure has a containing space;

[0016] The feed portion is arranged in the side wall of the furnace body, and the inlet end of the feed portion is connected with the accommodating space; a part of the straight-through portion is located in the side wall of the furnace body, and the other part is located in the accommodating space.

[0017] According to the flash drying equipment of the present invention, preferably, the barrier ring plate has a bottom wall and an inner side wall; the bottom wall is connected to the inner wall of the furnace body, and the inner side wall encloses the hollow structure; the barrier ring plate has a concave structure with a horizontal height continuously decreasing from the bottom wall to the inner side wall.

[0018] According to the flash drying equipment of the present invention, preferably:

[0019] The lower edge of the bottom wall has a highest point A and a lowest point B, and there is a horizontal height difference between the highest point A and the lowest point B;

[0020] The feed part is arranged obliquely; the inlet end of the feed part is located below the highest point A and close to the highest point A; the lowest point B is located below the discharge port.

[0021] According to the flash drying equipment of the present invention, preferably, it further comprises a cover plate; the cover plate is arranged above the furnace body and is used to close the furnace body.

[0022] The flash drying device according to the present invention preferably further comprises a cover plate and a vibration mechanism;

[0023] One side of the cover plate is fixed to the cover plate, and the other side is connected to the blocking ring plate; a closed space is formed between the cover plate, the blocking ring plate and the inner wall of the furnace body; the closed space is used to protect the special-shaped pipe, and the outlet end of the discharge part passes through the cover plate;

[0024] The vibration mechanism is arranged below the discharge portion and is used to drive the special-shaped pipe to vibrate.

[0025] According to the flash drying device of the present invention, preferably, the vibration mechanism comprises a shaft, a sleeve, a slide bar, a spring, an elastic ball block, a fan blade and a protective cover;

[0026] The shaft rod horizontally penetrates the cover plate, one end of the shaft rod is provided with a fan blade, and the other end is vertically connected to the sleeve; the fan blade is configured to be rotatable; the shaft rod is configured to be able to rotate with the rotation of the fan blade; and the sleeve is configured to be able to rotate with the rotation of the shaft rod;

[0027] The slide bar is slidably arranged in the sleeve; a spring is arranged between the slide bar and the bottom of the sleeve; one end of the slide bar away from the spring is connected to an elastic ball block; the elastic ball block is arranged to be able to intermittently contact the special-shaped pipe;

[0028] The protective cover is fixed on the cover plate and covers the outside of the fan blade.

[0029] According to the flash drying equipment of the present invention, preferably:

[0030] A feed inlet is provided at the lower part of one side of the furnace body;

[0031] The flash drying equipment also includes a screw feeder and an induced draft chamber; the screw feeder is configured to add the material to be dried into the containing space through the feed port; the induced draft chamber is connected to the lower part of the furnace body, and the induced draft chamber is in communication with the containing space.

[0032] The flash drying device according to the present invention preferably further comprises a base, a stirring device and a conical surface;

[0033] The base is arranged below the furnace body and the induced draft chamber, and the base has a base accommodating space;

[0034] The stirring device is located below the screw feeder; the stirring device comprises a motor, a stirring shaft and stirring blades; the motor is arranged in the base accommodating space, and is used to control the rotation of the stirring shaft; the stirring shaft is arranged vertically, and most of the stirring shaft is located in the furnace body; the stirring blades are evenly arranged on the stirring shaft;

[0035] The conical surface is arranged around the stirring shaft and is located below the stirring blade.

[0036] The flash drying equipment of the present invention can basically avoid the agglomeration of the powder to be dried. According to the preferred technical solution of the present invention, by setting a special-shaped pipe, the powder particles can be driven to disperse, thereby improving the drying effect. Furthermore, by setting a cover plate and a vibration mechanism, the present invention can use the wind force of the hot air flow to drive the special-shaped pipe to vibrate, so that the powder particles attached to the inner wall of the special-shaped pipe can be quickly detached, thereby improving work efficiency, and by vibrating the special-shaped pipe, the powder particles can be affected by the vibration when they hit the inner wall of the special-shaped pipe, so that they can disperse more quickly, thereby ensuring the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a flash drying device of the present invention.

[0038] Figure 2 It is a structural schematic diagram of a special-shaped pipeline of the present invention.

[0039] Figure 3 It is a schematic diagram of the relative positions of the blocking ring plate, the special-shaped pipe and the discharge port of the present invention.

[0040] Figure 4 It is a schematic structural diagram of another flash drying equipment of the present invention.

[0041] Figure 5 for Figure 4 A partial schematic diagram of .

[0042] Figure 6 for Figure 4 A partial enlarged schematic diagram of .

[0043] The following are the descriptions of the reference numerals:

[0044] 1-furnace body, 11-discharge port; 2-draft chamber; 3-stirring device, 31-motor, 32-stirring shaft, 33-stirring blade; 4-screw feeder; 5-special-shaped pipe, 51-feeding part, 52-straight part, 53-bend part, 54-discharge part, 55-screen; 6-blocking ring plate, A-highest point, B-lowest point; 7-vibration mechanism, 71-shaft rod, 72-sleeve, 73-slide rod, 74-spring, 75-elastic ball block, 76-fan blade, 77-protective cover; 8-cover plate; 9-base; 10-conical surface; 20-cover plate. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0046] The flash drying device of the present invention can be used to solve the problem of agglomeration of powder particles during the flash drying process. The flash drying device of the present invention includes a furnace body, a cover plate, an air induction chamber, a stirring device, a screw feeder, a base, a conical surface, a blocking ring plate and a special-shaped pipe. Optionally, it also includes a cover plate and a vibration mechanism. The following is a detailed description.

[0047] Furnace body and cover

[0048] The furnace body of the present invention has a side wall. The side wall encloses a hollow cylindrical structure. The interior of the hollow cylindrical structure forms a receiving space. On one side of the furnace body, a discharge port is arranged at the top, and a feed port is arranged at the bottom. The discharge port and the feed port are arranged on the same side. In the present invention, a cover plate is arranged above the furnace body to close the furnace body.

[0049] Blocking rings and special-shaped pipes

[0050] The blocking ring plate of the present invention is disposed around the inner wall of the furnace body. The so-called surrounding arrangement means that the blocking ring plate extends along the inner wall of the furnace body to form a ring-shaped object, and the ring-shaped object is not circular.

[0051] The middle part of the barrier ring plate is set as a hollow structure. In some embodiments, the central axis of the hollow structure coincides with the central axis of the furnace body. The barrier ring plate has a bottom wall and an inner side wall, the bottom wall is connected to the inner wall of the furnace body, and the inner side wall encloses the hollow structure. The barrier ring plate of the present invention is a concave structure with a horizontal height continuously decreasing from the bottom wall to the inner side wall.

[0052] In certain preferred embodiments, the lower edge of the bottom wall has a highest point A and a lowest point B, and there is a horizontal height difference between the highest point A and the lowest point B. The lowest point B is located below the discharge port. The highest point A and the lowest point B are arranged opposite to each other. The setting of the blocking ring plate can be used to guide the powdery particle mass into the special-shaped pipe.

[0053] The special-shaped pipe of the present invention is arranged on the other side of the furnace body, and is arranged opposite to the discharge port.

[0054] The special-shaped pipe is installed on the inner wall of the furnace body and is used to form powdery particles into dispersed powdery particles.

[0055] The special-shaped pipe includes a feed part, a straight-through part, a curved part and a discharge part connected in sequence. The feed part has an inlet end, which is located below the barrier ring plate and is used to allow powdered particles to enter the special-shaped pipe. The feed part is tilted. The straight-through part and the feed part are connected in an arc shape. According to one embodiment of the present invention, the angle between the axis of the straight-through part and the axis of the feed part is 85 to 95°. The straight-through part is tilted. The straight-through part is located above the feed part, and most of the straight-through part is located above the barrier ring plate. The curved part and the straight-through part are smoothly connected. In some embodiments, a U-shaped structure is formed between the curved part and the straight-through part. One end of the discharge part is an outlet end, and the outlet end faces the discharge port, which is used to discharge dispersed powdered particles. The discharge part also includes an intermediate part and a connecting part. The intermediate part is located between the outlet end and the connecting part. The intermediate part is connected to the curved part of the special-shaped pipe. The connecting part is connected to the straight-through part. The partition net is arranged at a position where the connecting part is close to the straight-through part. The partition is used to prevent powder particles from entering the discharge part, but the hot air flow can still enter the discharge part through the partition. The straight-through part and the discharge part are both straight-cylindrical structures. The angle between the axis of the straight-through part and the axis of the discharge part is 35 to 65 degrees, preferably 45 to 65 degrees. This is conducive to driving the powder particles to disperse.

[0056] In certain specific embodiments, the feed section is disposed in the side wall of the furnace body, and the inlet end of the feed section is communicated with the accommodating space. The inlet end of the feed section is located below the highest point A, close to the highest point A. A portion of the straight-through portion is located in the side wall of the furnace body, and another portion is located in the accommodating space. The discharge section includes an outlet end, a middle portion, and a connecting portion. The middle portion is located between the outlet end and the connecting portion. The middle portion is connected to the curved portion of the special-shaped pipe. The outlet end faces the discharge port, and is used to discharge dispersed powdered particles. The connecting portion is communicated with the straight-through portion. The partition is arranged at a position of the connecting portion close to the straight-through portion.

[0057] The present invention finds that part of the material to be dried that enters the furnace body forms powdery particle clusters (also called "agglomerated materials"), and the other part is dispersed powdery particles. If the powdery particle cluster is small, it can still rise with the hot air flow. Under the action of centrifugal force, the dispersed powdery particles directly move upward through the hollow structure of the barrier ring plate, and the powdery particle cluster moves toward the inner wall of the furnace body. The powdery particle cluster and the inner wall of the furnace body collide only by relying on centrifugal force, and the powdery particle cluster cannot be dispersed. During the rising process, the powdery particle cluster is blocked from rising by the barrier ring plate. The lower end of the barrier ring plate is set to be high at one end and low at the other end, and the powdery particle cluster will move quickly to the highest point and then be sent into the interior of the special-shaped pipe.

[0058] The powdery particle group enters the special-shaped pipe through the feed part, and the powdery particle group collides with the arc-shaped turning of the feed part and enters the straight-through part. Due to the existence of the partition net, the powdery particle group continues to move forward and enters the curved part. Part of the hot air flow directly enters the discharge part, and the hot air flow blows continuously, so that the powdery particle group will not be stuck on the partition net. The hot air flow and the powdery particle group enter the curved part. Since the curved part is a curved ring, the hot air flow and the powdery particle group will contact the side wall of the curved part, causing their own direction and speed to change. The powdery particle group collides continuously, causing the powdery particle group to scatter and form dispersed powdery particles. Since the density of the gas is smaller than that of the material, it is easier for the gas to turn. After the hot air flow and the powdery particle group collide with the side wall of the curved part, the hot air flow will flow forward at a faster speed, and the hot air flow will move forward with moisture. The subsequent hot air flow and the dispersed powdery particles will contact again, thereby achieving a good drying effect. The powder particles are dispersed in the bend and enter the discharge part in the form of dispersed powder particles. The powder particles come into contact with the hot air flow through the screen to form secondary drying, which prevents the powder particles in the bend from being completely dried. At the same time, the hot air flow blows the powder particles out. As the hot air flow blows continuously, the inside of the special-shaped pipe will not be blocked, thereby improving the drying effect.

[0059] If no special-shaped pipe is provided and only the inlet air temperature is increased, the inlet air temperature is too high, the moisture on the surface of the powdered particle group evaporates too quickly, and a hard shell is formed on the surface due to excessive drying. Then, the powdered particle group cracks during the drying process, and the agglomeration and adhesion lead to an increase in the particle size, which in turn affects the drying effect. In addition, too high a temperature can easily lead to the denaturation of the powdered particles. The present invention can ensure that the material to be dried is dried at an appropriate temperature by providing a special-shaped pipe, ensure the dispersion and drying of the powdered particles, and avoid the denaturation of the powdered particles.

[0060] Cover plate and vibration mechanism

[0061] In certain embodiments, the flash drying device of the present invention further comprises a cover plate and a vibration mechanism, so as to prevent the particles from contacting the outside of the special-shaped pipe, and the special-shaped pipe is vibrated by the vibration mechanism, so that the powdery particle agglomerates collide and disperse in the special-shaped pipe.

[0062] One side of the cover plate of the present invention is fixed to the cover plate, and the other side is connected to the blocking ring plate. A closed space is formed between the cover plate, the blocking ring plate and the inner wall of the furnace body. The closed space is used to protect the special-shaped pipe, and the outlet end of the discharge part passes through the cover plate. The setting of the cover plate can prevent the powder particles from contacting the outside of the special-shaped pipe, and can extend the service life of the special-shaped pipe.

[0063] The vibration mechanism of the present invention is arranged below the discharge part and is used to drive the special-shaped pipe to vibrate. The vibration mechanism includes a shaft rod, a sleeve, a slide rod, a spring, an elastic ball block, a fan blade and a protective cover. The shaft rod horizontally penetrates the cover plate, one end of the shaft rod is provided with a fan blade, and the other end is vertically connected to the sleeve. The fan blade is arranged to be able to rotate driven by the hot air flow. The shaft rod is arranged to be able to rotate as the fan blade rotates. The sleeve is arranged to be able to rotate as the shaft rod rotates. The slide rod is slidably arranged in the sleeve. A spring is arranged between the slide rod and the bottom of the sleeve. The compression and rebound directions of the spring are consistent with the length direction of the sleeve. The end of the slide rod away from the spring is connected to the elastic ball block. The elastic ball block is arranged to be able to intermittently contact with the special-shaped pipe. The protective cover is fixed to the cover plate and is arranged on the outside of the fan blade.

[0064] The present invention finds that since the powder particles in the powder particle group are not completely dried, they are easily attached to the inner wall of the special-shaped pipe and will not detach until they are impacted by the airflow and collided with other powder particles. It takes time for the powder particles to detach from the inner wall of the special-shaped pipe, which may cause a short-term blockage inside the special-shaped pipe, affecting work efficiency. The present invention uses a vibration mechanism to drive the special-shaped pipe to vibrate using the wind force of the hot air flow, so that the powder particles attached to the inner wall of the special-shaped pipe can be quickly detached, thereby improving work efficiency. By vibrating the special-shaped pipe, when the powder particle group hits the inner wall of the special-shaped pipe, it can be affected by the vibration and can be dispersed more quickly, thereby ensuring the drying effect.

[0065] The working principle of the vibration mechanism of the present invention is as follows:

[0066] The hot air flow drives the fan blades to rotate, and the rotation of the fan blades drives the shaft to rotate, causing the sleeve to rotate around the shaft, allowing the elastic ball block to continuously contact and separate from the special-shaped pipe. Each time the elastic ball block contacts the special-shaped pipe, it drives the slide bar to move, causing the spring to contract until the elastic ball block separates from the special-shaped pipe and the spring resets. This process is repeated, causing the special-shaped pipe to vibrate, and the powdery particles collide with the inner wall of the special-shaped pipe and disperse.

[0067] Entrained air chamber and screw feeder

[0068] The spiral feeder of the present invention is configured to feed the material to be dried into the containing space through the feed port. The induced draft chamber is connected to the lower part of the furnace body, and the induced draft chamber is in communication with the containing space.

[0069] In the present invention, the hot air flow enters the induced draft chamber and rises in the containing space in a spiral form. The screw feeder will initially chop the material to be dried and then feed it into the containing space. The larger and wetter powder material falls onto the stirring device in the furnace body and is mechanically crushed by the stirring device. Then, it rises with the hot air flow, and the powder material is dried in the rising process. In the present invention, the structure of the screw feeder and the induced draft chamber is not particularly limited, and those known in the art can be used.

[0070] Base, stirring device and cone

[0071] The base of the present invention is arranged below the furnace body and the induced draft chamber, and the base has a base accommodating space, which is convenient for installing the stirring device.

[0072] The stirring device of the present invention is located below the screw feeder. In the present invention, the structure of the stirring device is not particularly limited, and those known in the art can be used.

[0073] In certain embodiments, the stirring device includes a motor, a stirring shaft and a stirring blade. The motor is arranged in the base receiving space for controlling the rotation of the stirring shaft. The stirring shaft is arranged vertically, and most of the stirring shaft is located in the receiving space. The stirring blades are evenly arranged on the stirring shaft.

[0074] The conical surface of the present invention is arranged around the stirring shaft and is located below the stirring blade. This is conducive to improving the drying efficiency of the powder material. The conical surface is an inverted funnel-shaped structure.

[0075] Example 1

[0076] Figure 1 It is a structural schematic diagram of a flash drying device of the present invention. Figure 2 It is a structural schematic diagram of a special-shaped pipeline of the present invention. Figure 3 It is a schematic diagram of the relative positions of the blocking ring plate, the special-shaped pipe and the discharge port of the present invention.

[0077] like Figure 1 and Figure 2 As shown, the flash drying equipment of the present invention includes a furnace body 1, an induced draft chamber 2, a stirring device 3, a spiral feeder 4, a special-shaped pipeline 5, a blocking ring plate 6, a cover plate 8, a base 9 and a conical surface 10.

[0078] The furnace body 1 has a side wall, which encloses a hollow cylindrical structure. The hollow cylindrical structure has a containing space. On one side of the furnace body 1, a discharge port 11 is arranged at the top, and a feed port (not shown) is arranged at the bottom.

[0079] like Figure 1 and Figure 3 As shown, the blocking ring plate 6 is arranged around the inner wall of the furnace body 1, and the middle part of the blocking ring plate 6 is arranged as a hollow structure. The blocking ring plate 6 has a bottom wall and an inner side wall. The inner side wall encloses the hollow structure. The bottom wall is connected to the inner wall of the furnace body 1. The blocking ring plate 6 is a concave structure with a continuously decreasing horizontal height from the bottom wall to the inner side wall. The lower edge of the bottom wall has a highest point A and a lowest point B, and there is a horizontal height difference between the highest point A and the lowest point B. The lowest point B is located below the discharge port 11.

[0080] like Figures 1 to 3 As shown, the special-shaped pipe 5 is arranged on the other side of the furnace body 1, which is arranged opposite to the discharge port 11. The special-shaped pipe 5 forms the powdery particle group into dispersed powdery particles. The special-shaped pipe 5 includes a feed portion 51, a straight portion 52, a curved portion 53 and a discharge portion 54 connected in sequence. The feed portion 51 has an inlet end, which is located below the blocking ring plate 6, for the powdery particle group to enter the special-shaped pipe 5. The feed portion 51 is arranged in the side wall of the furnace body 1, and the inlet end is connected to the accommodating space of the furnace body 1. The feed portion 51 is arranged at an angle. The inlet end of the feed portion 51 is located below the highest point A and close to the highest point A. The straight portion 52 is arranged at an angle. The straight portion 52 is located above the feed portion 51, and most of the straight portion 52 is located above the blocking ring plate 6. A part of the straight portion 52 is located in the side wall of the furnace body 1, and the other part is located in the accommodating space of the furnace body 1. A U-shaped structure is formed between the curved portion 53 and the straight portion 52. The discharge portion 54 includes an outlet end, a middle portion and a connecting portion. The middle portion is located between the outlet end and the connecting portion. The middle portion is connected to the curved portion 53. The outlet end faces the discharge port 11 and is used to discharge dispersed powder particles. The connecting portion is connected to the straight portion 52. A partition 55 is provided at the connecting portion.

[0081] The cover plate 8 is disposed above the furnace body 1 and is used to close the furnace body 1 .

[0082] The screw feeder 4 feeds the material to be dried into the accommodation space of the furnace body 1 through the feeding port of the furnace body 1. The induced draft chamber 2 is connected to the lower part of the furnace body 1 and communicates with the accommodation space of the furnace body 1.

[0083] The base 9 is disposed below the furnace body 1 and the induced draft chamber 2 , and the base 9 has a base accommodating space.

[0084] The stirring device 3 is located below the screw feeder 4. The stirring device 3 includes a motor 31, a stirring shaft 32 and a stirring blade 33. The motor 31 is arranged in the base accommodation space and is used to control the rotation of the stirring shaft 32. The stirring shaft 32 is arranged vertically, and most of the stirring shaft 32 is located in the furnace body 1. The stirring blades 33 are evenly arranged on the stirring shaft 32. The conical surface 10 is arranged around the stirring shaft 32 and is located below the stirring blade 33.

[0085] Example 2

[0086] Except for the following settings, the rest is the same as Example 1:

[0087] Figure 4 It is a schematic structural diagram of another flash drying equipment of the present invention. Figure 5 for Figure 4 A partial schematic diagram of . Figure 6 for Figure 4 A partial enlarged schematic diagram of Figures 4 to 6 As shown, the flash drying device of this embodiment further includes a cover plate 20 and a vibration mechanism 7. One side of the cover plate 20 is fixed to the cover plate 8, and the other side is connected to the blocking ring plate 6. A closed space is formed between the cover plate 20, the blocking ring plate 6 and the inner wall of the furnace body 1. The closed space is used to protect the special-shaped pipe 5, and the outlet end of the discharge portion 54 of the special-shaped pipe 5 passes through the cover plate 20.

[0088] like Figure 6 As shown, the vibration mechanism 7 is arranged below the discharge portion 54, and is used to drive 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 block 75, a fan blade 76 and a protective cover 77. The shaft 71 is arranged horizontally and passes through the cover plate 20. One end of the shaft 71 is connected to the fan blade 76, and the other end is vertically connected to the sleeve 72. The fan blade 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 can rotate as the shaft 71 rotates. The slide bar 73 is slidably arranged in the sleeve 72, and a spring 74 is arranged between the slide bar 73 and the bottom of the sleeve 72. The slide bar 73 has a T-shaped structure. One end of the slide bar 73 away from the spring 74 is connected to the elastic ball block 75. The elastic ball block 75 can intermittently contact the discharge portion 54 of the special-shaped pipe 5. The protective cover 77 is fixed on the cover plate 20 and covers the outside of the fan blades 76 .

[0089] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement and substitution that can be conceived by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A flash drying device, comprising a furnace body, characterized in that: The flash drying equipment also includes a special-shaped pipeline and a barrier ring plate; The furnace body has a side wall, the side wall encloses a hollow cylindrical structure, and the hollow cylindrical structure has a containing space; a discharge port is arranged at the top of one side of the furnace body; The blocking ring plate is arranged around the inner wall of the furnace body, and the middle part of the blocking ring plate is arranged as a hollow structure; the central axis of the hollow structure coincides with the central axis of the furnace body; The special-shaped pipe is arranged opposite to the discharge port; the special-shaped pipe is used to form powdery particle clusters into dispersed powdery particles; the special-shaped pipe includes a feed portion, a straight-through portion, a curved portion and a discharge portion connected in sequence; the feed portion has an inlet end, and the inlet end is located below the blocking ring plate, and is used to allow the powdery particle clusters to enter the special-shaped pipe; the feed portion is arranged in the side wall of the furnace body, and the inlet end of the feed portion is connected to the accommodating space; the straight-through portion and the feed portion are connected in an arc shape; a part of the straight-through portion is located in the side wall of the furnace body, and the other part is located in the accommodating space; the straight-through portion is located above the feed portion, and most of the straight-through portion is located above the blocking ring plate; the curved portion is smoothly connected to the straight-through portion; one end of the discharge portion is an outlet end, and the outlet end faces the discharge port, and is used to discharge dispersed powdery particles; The discharge portion further comprises a middle portion and a connecting portion; the middle portion is located between the outlet end and the connecting portion, and the middle portion is connected to the curved portion; the connecting portion is connected to the straight portion; The special-shaped pipe also includes a partition net; the partition net is arranged at a position of the connecting portion close to the straight-through portion.

2. The flash drying equipment according to claim 1, characterized in that: The blocking ring plate has a bottom wall and an inner wall; the bottom wall is connected to the inner wall of the furnace body, and the inner wall encloses the hollow structure; the blocking ring plate has a concave structure with a horizontal height that continuously decreases from the bottom wall to the inner wall.

3. The flash drying equipment according to claim 2, characterized in that: The lower edge of the bottom wall has a highest point A and a lowest point B, and there is a horizontal height difference between the highest point A and the lowest point B; The feed part is arranged obliquely; the inlet end of the feed part is located below the highest point A and close to the highest point A; The lowest point B is located below the discharge port.

4. The flash drying equipment according to claim 3, characterized in that: It also includes a cover plate; the cover plate is arranged above the furnace body and is used to close the furnace body.

5. The flash drying equipment according to claim 4, characterized in that: Also includes a cover plate and a vibration mechanism; One side of the cover plate is fixed to the cover plate, and the other side is connected to the blocking ring plate; a closed space is formed between the cover plate, the blocking ring plate and the inner wall of the furnace body; the closed space is used to protect the special-shaped pipe, and the outlet end of the discharge part passes through the cover plate; The vibration mechanism is arranged below the discharge portion and is used to drive the special-shaped pipe to vibrate.

6. The flash drying equipment according to claim 5, characterized in that: The vibration mechanism comprises a shaft, a sleeve, a slide rod, a spring, an elastic ball block, a fan blade and a protective cover; The shaft rod horizontally penetrates the cover plate, one end of the shaft rod is provided with a fan blade, and the other end is vertically connected to the sleeve; the fan blade is configured to be rotatable; the shaft rod is configured to be able to rotate with the rotation of the fan blade; and the sleeve is configured to be able to rotate with the rotation of the shaft rod; The slide bar is slidably arranged in the sleeve; a spring is arranged between the slide bar and the bottom of the sleeve; one end of the slide bar away from the spring is connected to an elastic ball block; the elastic ball block is arranged to be able to intermittently contact the special-shaped pipe; The protective cover is fixed on the cover plate and covers the outside of the fan blade.

7. The flash drying equipment according to any one of claims 1 to 6, characterized in that: A feed inlet is provided at the lower part of one side of the furnace body; The flash drying equipment also includes a screw feeder and an induced draft chamber; the screw feeder is configured to add the material to be dried into the containing space through the feed port; the induced draft chamber is connected to the lower part of the furnace body, and the induced draft chamber is in communication with the containing space.

8. The flash drying equipment according to claim 7, characterized in that: It also includes a base, a stirring device and a conical surface; The base is arranged below the furnace body and the induced draft chamber, and the base has a base accommodating space; The stirring device is located below the screw feeder; the stirring device comprises a motor, a stirring shaft and stirring blades; the motor is arranged in the base accommodating space, and is used to control the rotation of the stirring shaft; the stirring shaft is arranged vertically, and most of the stirring shaft is located in the furnace body; the stirring blades are evenly arranged on the stirring shaft; The conical surface is arranged around the stirring shaft and is located below the stirring blade.

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