CN211912757U - Self-cleaning spray dryer - Google Patents

Abstract

The utility model discloses a self-cleaning spray dryer, which comprises a drying tower and a cleaning mechanism installed on the drying tower. The drying tower comprises a drying cylinder and a conical hopper connected with each other. The side wall of the cylinder is connected with an air intake pipe, and the cleaning mechanism includes a screw rod that can be rotatably connected to the drying cylinder, a scraper ring embedded in the drying cylinder with a slidable card, and a cleaning device that is fixedly installed in the drying cylinder and close to one end of the conical hopper. The ring and the motor that drives the screw to rotate, the scraper ring is slidably connected with the inner wall of the drying cylinder, the screw penetrates the wall of the scraper ring and is threadedly connected with the screw, the lower end of the screw is rotatably connected to the top of the cleaning ring, the screw The upper part is provided with an air passage, the interior of the cleaning ring is provided with a cavity, the bottom of the cleaning ring is provided with a cleaning hole, and the cavity is communicated with the air passage and the cleaning hole. The self-cleaning spray dryer of the utility model can clean the inner wall of the drying tower, avoids corrosion, has a high degree of automation and saves manpower.

Description

Self-cleaning spray dryer

technical field

The utility model relates to the technical field of drying equipment, in particular to a self-cleaning spray dryer.

Background technique

Spray dryer is a kind of drying treatment equipment that processes biological, pharmaceutical, food and other fluid materials into powder materials by atomization and heating. The material is sprayed into fine droplets in the hot air in the drying tower, and the water is evaporated into powder or granules during the falling process of the droplets.

At present, during the working process of the spray dryer, after the material is sprayed into fine droplets, some particles are easily adhered to the inner wall of the drying tower and form residues because they are not fully dried, and the residual material will cause corrosion to the inner wall of the drying tower. Therefore, after a period of use, the inner wall of the drying tower needs to be cleaned manually, which is troublesome and requires a lot of manpower.

Utility model content

The technical problem to be solved by the utility model is: in order to solve the above problems in the prior art, a self-cleaning spray dryer that saves manpower is provided.

The technical scheme adopted by the present utility model to solve the technical problem is: a self-cleaning spray dryer, comprising a drying tower and a cleaning mechanism installed on the drying tower, the drying tower comprises a drying cylinder and a cone connected to each other The top of the drying cylinder is connected with a spray pipe, the side wall of the drying cylinder is connected with an air inlet pipe, and the cleaning mechanism includes a screw rod that can be rotatably connected to the drying cylinder, a slidable card embedded in the The scraper ring in the drying cylinder, the cleaning ring fixedly installed in the drying cylinder and close to one end of the conical hopper, and the motor driving the screw to rotate, the scraper ring slides with the inner wall of the drying cylinder The screw rod penetrates the wall of the scraper ring and is threadedly connected with the screw rod, the lower end of the screw rod is rotatably connected to the top of the cleaning ring, and the screw rod is provided with an air channel A cavity is arranged inside the cleaning ring, a cleaning hole is opened at the bottom of the cleaning ring, and the cavity is communicated with the air passage and the cleaning hole.

Further, the inner wall of the drying cylinder is provided with two oppositely arranged chute along the axial direction of the drying cylinder, and the outer wall of the scraper ring is protruded with two oppositely arranged protrusions. slidingly connected with the chute.

Further, the outer wall of the scraper ring is fitted with the inner wall of the drying cylinder, and the inner wall of the scraper ring is configured as a conical surface.

Further, the cavity has an annular structure, and the cleaning holes have a plurality of them, and the plurality of cleaning holes are evenly distributed along the circumferential direction of the cleaning ring.

Further, a sealing member is sandwiched between the screw rod and the cleaning ring.

Further, one end of the screw rod extends to the inside of the drying cylinder after passing through the top wall of the drying cylinder, a bearing is provided between the screw rod and the top wall of the drying cylinder, and the bearing The inner ring is fixedly sleeved on the outside of the screw rod, and the outer ring of the bearing is in interference fit with the top wall of the drying cylinder.

Further, the motor is installed on the side wall of the drying cylinder, the output shaft of the motor is arranged coaxially with the screw rod, a driving wheel is installed on the output shaft of the motor, and the screw rod is installed on the There is a driven wheel, and a belt is sleeved between the driving wheel and the driven wheel.

Further, the spray pipe is connected at the center of the top of the drying cylinder, and a material spray port communicated with the inner cavity of the drying cylinder is opened on the side of the lower end of the spray pipe.

Further, a through hole is formed on the top of the drying cylinder at the side of the spray pipe, and the through hole communicates with the inner cavity of the drying cylinder.

Further, the self-cleaning spray dryer further includes two supporting frames, and the two supporting frames are connected on opposite sides of the bottom of the conical hopper.

The beneficial effects of the utility model are: in the self-cleaning spray dryer provided by the utility model, the motor drives the screw to rotate, so as to force the scraper ring to move up and down along the axial direction of the drying cylinder, so that the adhesive on the drying cylinder can be reciprocated. The fluid particles on the inner wall of the hopper are scraped off, and at the same time, high-pressure gas is introduced into the air passage, and the high-pressure gas flows out through the cleaning hole, which can purge the fluid particles stuck on the inner wall of the conical hopper. Residual substances cause corrosion to the inner wall of the drying tower, the degree of automation is high, manpower is saved, and it is easy to popularize and use.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the self-cleaning spray dryer of the present invention;

FIG. 2 is a partial enlarged view of A in the self-cleaning spray dryer shown in FIG. 1 .

In the picture: 10, drying tower, 11, drying cylinder, 111, spray pipe, 112, material spray port, 113, air inlet pipe, 114, through hole, 115, chute, 12, conical hopper, 121, discharge port , 20, cleaning mechanism, 21, screw, 211, bearing, 212, air passage, 213, driven wheel, 22, scraper ring, 221, protrusion, 23, cleaning ring, 231, cavity, 232, cleaning hole, 24, motor, 241, driving wheel, 242, belt, 30, support frame.

Detailed ways

The present utility model will now be described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, and only illustrates the basic structure of the present invention in a schematic way, so it only shows the structure related to the present invention.

Please refer to FIG. 1 , the self-cleaning spray dryer provided by the present invention includes a drying tower 10 and a cleaning mechanism 20 installed on the drying tower 10 .

The drying tower 10 includes a drying cylinder 11 and a conical hopper 12 that are connected to each other. The drying cylinder 11 is roughly in the form of a hollow cylindrical structure with an opening at the lower end. Connected with the inner cavity of the drying cylinder 11 , the large mouth end of the conical hopper 12 is connected with the lower end of the drying cylinder 11 , and the small mouth end of the conical hopper 12 forms a discharge port 121 .

The center of the top of the drying cylinder 11 is connected with a spray pipe 111, the side wall of the lower end of the spray pipe 111 is provided with a spray port 112 that communicates with the inner cavity of the drying cylinder 11, and the side wall of the drying cylinder 11 is connected with the drying cylinder 11. The air intake pipe 113 communicates with the inner cavity. During use, the fluid material is sprayed out through the spray port 112 of the spray pipe 111 under the action of pressure to form fine particles, and the particles are in contact with the hot air introduced into the drying cylinder 11 through the air inlet pipe 113, so that the fine fluid particles are dried. Powder particles are formed, and the powder particles finally flow out through the discharge port 121 .

In order to facilitate the gas entering and exiting the drying cylinder 11 , a through hole 114 that communicates with the inner cavity of the drying cylinder 11 is provided on the top of the drying cylinder 11 at the side of the nozzle 111 .

Please refer to FIG. 1 and FIG. 2 , the cleaning mechanism 20 includes a screw rod 21 rotatably connected to the drying cylinder 11 , a scraper ring 22 slidably embedded in the drying cylinder 11 , and a cleaning ring 23 fixedly installed in the drying cylinder 11 and a motor 24 for driving the screw rod 21 to rotate, wherein the screw rod 21 penetrates the wall of the scraper ring 22 and is threadedly connected with the screw rod 21 .

In a specific embodiment, one end of the screw rod 21 extends into the interior of the drying cylinder 11 after passing through the top wall of the drying cylinder 11 , and the screw rod 21 is rotatably connected to the top wall of the drying cylinder 11 . In order to facilitate the rotation of the screw rod 21, a bearing 211 is arranged between the screw rod 21 and the top wall of the drying cylinder 11. The inner ring of the bearing 211 is fixedly sleeved on the outside of the screw rod 21. Wall interference fit.

The scraper ring 22 has a substantially annular structure. The scraper ring 22 is slidably connected to the inner wall of the drying cylinder 11 along the axial direction of the drying cylinder 11 , thereby scraping the fluid particles adhered to the inner wall of the drying cylinder 11 to achieve cleaning. In a specific embodiment, the inner wall of the drying cylinder 11 is provided with two oppositely arranged chutes 115 along the axial direction of the drying cylinder 11 . There are two oppositely arranged protrusions 221. The protrusions 221 are slidably connected to the chute 115. Since the protrusions 221 cooperate with the chute 115, the scraper 22 can only move in the axial direction of the drying cylinder 11 and cannot rotate relative to the drying cylinder 11. , so as to realize the slidable snap-fit connection relationship between the scraper ring 22 and the drying cylinder 11 .

In addition, the outer wall of the scraper ring 22 is in contact with the inner wall of the drying cylinder 11, and the inner wall of the scraper ring 22 is set as a conical surface, which can make the scraped fluid particles flow down along the conical surface and prevent the fluid particles from staying in the The top of the scraper ring 22 facilitates the drop of fluid particles.

The cleaning ring 23 has a substantially annular structure. The cleaning ring 23 is fixedly installed at one end of the drying cylinder 11 close to the conical hopper 12. A cavity 231 is provided inside the cleaning ring 23. There are cleaning holes 232 , and each cleaning hole 232 communicates with the cavity 231 . In this embodiment, there are a plurality of cleaning holes 232 , and the plurality of cleaning holes 232 are evenly distributed along the circumferential direction of the cleaning ring 23 . In addition, the inside of the screw rod 21 is provided with air passages 212 along the axial direction of the screw rod 21 , and the air passages 212 respectively penetrate the upper and lower surfaces of the screw rod 21 . The lower end of the screw rod 21 is rotatably connected to the top of the cleaning ring 23 , and the air passage 212 communicates with the cavity 231 . During use, high-pressure gas is introduced through the air passage 212, and the gas flows out from the cleaning hole 232 after passing through the cavity 231, and then purging the inner wall of the conical hopper 12. At this time, the fluid adhered to the inner wall of the conical hopper 12 was purged away.

In order to improve air tightness and prevent gas leakage, a sealing member (not shown in the figure) is sandwiched between the screw rod 21 and the cleaning ring 23. It is understood that the sealing member is made of a sealing material such as silicone or rubber. In addition, the air passage 212 is connected with a gas source (not shown in the figure), so as to provide high pressure gas to the air passage 212 .

The motor 24 is installed on the side wall of the drying cylinder 11. In a specific embodiment, the output shaft of the motor 24 is arranged coaxially with the screw rod 21, the output shaft of the motor 24 is installed with a driving wheel 241, and the screw rod 21 is installed on the There is a driven wheel 213 , and a belt 242 is sleeved between the driving wheel 241 and the driven wheel 213 . During operation, the motor 24 is started, the motor 24 drives the driving wheel 241 to rotate, and the driven wheel 213 rotates under the action of the belt 242, thereby driving the screw rod 21 to rotate. The electrode 24 is a forward and reverse rotation motor.

The self-cleaning spray dryer of the present invention further includes a support frame 30, there are two support frames 30, and the two support frames 30 are connected on opposite sides of the bottom of the conical hopper 12, and the support frames 30 are suitable for the self-cleaning spray dryer. The machine plays a supporting role.

In the self-cleaning spray dryer provided by the present invention, the motor 24 drives the screw rod 21 to rotate, thereby forcing the scraper ring 22 to reciprocate upward and downward along the axial direction of the drying cylinder 11, so as to adhere to the inner wall of the drying cylinder 11. At the same time, high-pressure gas is introduced into the air passage 212, and the high-pressure gas flows out through the cleaning hole 232, which can purify the fluid particles adhered to the inner wall of the conical hopper 12, so as to avoid The residual substances can cause corrosion to the inner wall of the drying tower 10, the degree of automation is high, manpower is saved, and it is convenient for popularization and use.

Taking the above ideal embodiments according to the present invention as inspiration, through the above descriptions, relevant staff can make various changes and modifications without departing from the scope of the present invention. The technical scope of the present utility model is not limited to the content in the description, and its technical scope must be determined according to the scope of the claims.

Claims (10)

1. A self-cleaning spray dryer characterized in that: including the drying tower and install the clean mechanism on the drying tower, the drying tower includes interconnect's drying cylinder and toper hopper, the top of drying cylinder is connected with the spray tube, be connected with the intake pipe on the lateral wall of drying cylinder, clean mechanism include can with drying cylinder rotate the lead screw of being connected, slidable card inlay locate scraping ring, fixed mounting in the drying cylinder and be close to clean ring and drive of toper hopper one end the lead screw pivoted motor, scraping ring with the inner wall sliding connection of drying cylinder, the lead screw run through the wall body of scraping ring and with lead screw threaded connection, the lower extreme of lead screw rotationally connect in clean the top of ring, be provided with the air duct on the lead screw, clean the inside of ring and be provided with the cavity, clean the hole of cleaning has been seted up to the bottom of ring, the cavity is communicated with the air duct and the cleaning hole.

2. A self-cleaning spray dryer as claimed in claim 1, wherein: two oppositely-arranged sliding grooves are formed in the inner wall of the drying cylinder along the axial direction of the drying cylinder, two oppositely-arranged bulges are arranged on the outer wall of the scraping ring in a protruding mode, and the bulges are connected with the sliding grooves in a sliding mode.

3. A self-cleaning spray dryer as claimed in claim 1, wherein: the outer wall of the scraping ring is attached to the inner wall of the drying cylinder, and the inner wall of the scraping ring is a conical surface.

4. A self-cleaning spray dryer as claimed in claim 1, wherein: the cavity is ring structure, the hole of sweeping has a plurality ofly, and a plurality of holes of sweeping are followed the circumference evenly distributed who cleans the ring.

5. A self-cleaning spray dryer as claimed in claim 1, wherein: and a sealing element is clamped between the screw rod and the cleaning ring.

6. A self-cleaning spray dryer as claimed in claim 1, wherein: one end of the screw rod penetrates through the top wall of the drying cylinder and then extends to the inside of the drying cylinder, a bearing is arranged between the screw rod and the top wall of the drying cylinder, the inner ring of the bearing is fixedly sleeved on the outside of the screw rod, and the outer ring of the bearing is in interference fit with the top wall of the drying cylinder.

7. A self-cleaning spray dryer according to claim 1 or 6, wherein: the motor is installed on the lateral wall of the drying cylinder, an output shaft of the motor and the lead screw are coaxially arranged, an active wheel is installed on the output shaft of the motor, a driven wheel is installed on the lead screw, and a belt is sleeved between the active wheel and the driven wheel.

8. A self-cleaning spray dryer as claimed in claim 1, wherein: the spray pipe is connected in the center of drying cylinder top, set up on the lateral part of spray pipe lower extreme with the spout mouth of the inner chamber intercommunication of drying cylinder.

9. A self-cleaning spray dryer according to claim 8, wherein: the top of the drying cylinder is positioned on the side part of the spray pipe and is provided with a through hole, and the through hole is communicated with the inner cavity of the drying cylinder.

10. A self-cleaning spray dryer as claimed in claim 1, wherein: the self-cleaning spray dryer further comprises two support frames, and the two support frames are connected to two opposite sides of the bottom of the conical hopper.

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