CN209848843U

CN209848843U - Closed-cycle spray dryer for laboratory

Info

Publication number: CN209848843U
Application number: CN201920298752.9U
Authority: CN
Inventors: 项宜平; 胡友华
Original assignee: Shanghai Pilotech Instrument & Equipment Co Ltd
Current assignee: Shanghai Pilotech Instrument & Equipment Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-12-27
Anticipated expiration: 2029-03-08

Abstract

The utility model relates to a closed cycle spray dryer for a laboratory, which relates to the technical field of drying equipment processing, and comprises a box body, wherein an air supply pipe and a mother liquid box are arranged in the box body, a heater and a fan are arranged on the air supply pipe, an air inlet rectifying chamber, a drying chamber, a cyclone separator, a connecting pipe and a condenser are sequentially and hermetically connected outside the box body, the air inlet rectifying chamber is hermetically connected with one end of the air supply pipe, and the condenser is hermetically connected with the other end of the air supply pipe; the air inlet rectification chamber is provided with a liquid inlet pipe with one end sealed, the liquid inlet pipe is connected with a liquid conveying pipe and a high-speed centrifugal atomizer, the liquid conveying pipe is connected with a mother liquid box, the cyclone separator is hermetically provided with a collecting tank, the condenser is provided with a drain valve, and the air supply pipe is communicated with inert gas. The utility model discloses a form closed cycle, carry out the drying with inert gas to the feed liquid to make the feed liquid can not contact with the air, thereby can dry the flammable and explosive feed liquid of part, improved the suitability of equipment.

Description

Closed-cycle spray dryer for laboratory

Technical Field

The utility model belongs to the technical field of drying equipment processing technique and specifically relates to a closed circulation spray dryer in laboratory is related to.

Background

The spray dryer is one of continuous normal pressure dryers. The liquid material is atomized by special equipment and is dried by contacting with hot air. For drying some heat sensitive liquids, suspensions and viscous liquids such as milk, eggs, tannins and pharmaceuticals. Also useful for drying fuels, intermediates, soap powders, inorganic salts, and the like.

The air is filtered and heated and enters the top air distributor of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid is sprayed into fine foggy liquid beads by a high-speed centrifugal atomizer at the top of the tower body in a rotating way, and the fine foggy liquid beads are in parallel flow contact with hot air and can be dried into finished products in a short time. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the waste gas is evacuated by the induced draft fan.

Most of the existing experimental spray dryers are open, air is sucked and then heated, feed liquid is dried, and dried gas is directly discharged. However, when the feed liquid is a substance which is easy to burn or explode after contacting with hot air, the equipment cannot be used, and the applicability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a closed circulation spray dryer in laboratory through forming closed circulation, carries out the drying with inert gas to the feed liquid to make the feed liquid can not contact the air, thereby can dry the flammable and explosive feed liquid of part, improved the suitability of equipment.

The above object of the present invention is achieved by the following technical solutions:

a closed-cycle spray dryer for a laboratory comprises a box body, wherein an air supply pipe and a mother liquor box are arranged in the box body, a heater and a fan are arranged on the air supply pipe, an air inlet rectifying chamber, a drying chamber, a cyclone separator, a connecting pipe and a condenser are sequentially connected outside the box body in a sealing manner, the air inlet rectifying chamber is connected with one end of the air supply pipe in a sealing manner, and the condenser is connected with the other end of the air supply pipe in a sealing manner; the air inlet rectification chamber is provided with a liquid inlet pipe with one end sealed, the liquid inlet pipe is connected with a liquid conveying pipe and a high-speed centrifugal atomizer, the liquid conveying pipe is connected with the mother liquor box, the cyclone separator is hermetically provided with a collecting tank, the condenser is provided with a drain valve, and the air supply pipe is communicated with inert gas.

Through adopting above-mentioned technical scheme, inert gas in the blast pipe flows through the fan, and the heating through the heater, hot-blast entering air inlet rectification room, the feed liquid of mother liquor incasement enters into the feed liquor pipe through the transfer line, the feed liquid is vaporific entering air inlet rectification room under high-speed centrifugal atomizer's effect, by hot air drying after getting into the drying chamber, then carry cyclone, the powder falls into in the collection tank, the hot-air that contains vapor passes through the connecting pipe and enters into the condenser, vapor condensation liquefaction, inert gas after the vapor that removes returns the blast pipe again and carries out drying next time. By forming closed cycle and drying the feed liquid by inert gas, the feed liquid can not contact with air, so that part of flammable and explosive feed liquid can be dried, and the applicability of the equipment is improved. And because the closed circuit is not communicated with the outside, the influence of dust is not needed to be considered, thereby improving the purity of the product.

Preferably, the outer wall of the lower opening of the cyclone separator is provided with a first flange, the outer wall of the opening of the collection tank is provided with a second flange, and the first flange and the second flange are connected through a connecting assembly.

Through adopting above-mentioned technical scheme, with first flange and second flange amalgamation during the installation, reuse coupling assembling connects fixedly to accomplish the installation of collecting tank.

Preferably, the connecting assembly comprises a C-shaped buckle clamped on the first flange and the second flange, and a T-shaped rod which is installed on the C-shaped buckle in a threaded manner and abuts against one side, away from the second flange, of the first flange.

By adopting the technical scheme, after the first flange and the second flange are spliced, the C-shaped buckle is clamped on the first flange and the second flange, the T-shaped rod is rotated and abuts against the first flange, so that the first flange and the second flange abut against each other, and the installation is completed.

Preferably, a sealing ring is tightly sleeved at the junction of the outer side walls of the first flange and the second flange.

Through adopting above-mentioned technical scheme, improve the leakproofness, reduce because first flange and the incomplete laminating of second flange cause the probability of gas leakage.

Preferably, the lower surface of the lower opening of the cyclone separator is provided with an annular groove, and the upper surface of the opening of the collecting tank is provided with an annular ring which is in inserted connection with the annular groove.

Through adopting above-mentioned technical scheme, after the feed liquid is dry to become the powder, fall the collecting vessel, can fall the open end of collecting vessel, probably lead to the material powder to fall when the collecting vessel is taken off in the later stage, cause the waste. Through the arrangement of the annular groove and the annular ring, the amount of the liquid falling into the opening of the collecting tank is greatly reduced, so that the probability of later-period waste is reduced; and the arrangement of the annular groove and the annular ring is equivalent to the increase of a sealing line, so that the sealing effect is further improved.

Preferably, the width of the end of the annular ring far away from the collecting tank is smaller than the width of the notch of the annular groove.

Through adopting above-mentioned technical scheme for need not accurate alignment when inserting the ring channel with the ring channel, thereby make things convenient for the installation of holding vessel.

Preferably, the bottom of collection jar sunken holding tank that forms in to the jar, can dismantle in the holding tank and be provided with the brush hair pole.

Through adopting above-mentioned technical scheme, after the drying is accomplished, need pour the material powder in the holding vessel, partial material powder may remain on the inner wall of holding vessel, need brush remaining powder down with the help of the instrument. Through the setting of brush hair pole, directly take off when brushing can, need not to move again and go to look for, the operation is swift.

Preferably, the accommodating groove is provided with a concave elastic clip, and the bristle bar is clipped on the elastic clip.

By adopting the technical scheme, when the brush hair rod is required to be fixed, the brush hair rod is clamped between the elastic clamping buckles, and the structure is simple and practical.

Preferably, a temperature sensor and a display screen electrically connected with the temperature sensor are mounted on the connecting pipe.

By adopting the technical scheme, the temperature of hot gas can be known at any time, and when the temperature is out of a normal range, the temperature can be adjusted in time.

To sum up, the utility model discloses a beneficial technological effect does:

1. by forming closed cycle and drying the feed liquid by inert gas, the feed liquid can not contact air, so that part of flammable and explosive feed liquid can be dried, and the applicability of the equipment is improved;

2. through the arrangement of the annular groove and the annular ring, the amount of the liquid falling into the opening of the collecting tank is greatly reduced, so that the probability of later-period waste is reduced; the arrangement of the annular groove and the annular ring is equivalent to the addition of a sealing line, so that the sealing effect is further improved;

3. through the setting of brush hair pole, directly take off when brushing can, and need not to walk to look for again, the operation is swift.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of the present invention;

FIG. 2 is a partial exploded view of the present invention, in which the connecting structure of the collecting tank and the cyclone separator is exploded, and the top cover of the box body is omitted;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

fig. 4 is an exploded view of the collection tank.

Reference numerals: 1. a box body; 13. a heater; 14. a fan; 2. an air intake rectifying chamber; 21. a liquid inlet pipe; 22. a transfusion tube; 23. a high-speed centrifugal atomizer; 3. a drying chamber; 4. a cyclone separator; 41. a first flange; 5. a connecting pipe; 51. a temperature sensor; 52. a display screen; 6. a condenser; 7. a collection tank; 71. a second flange; 72. an annular ring; 73. accommodating grooves; 74. an elastic clip; 75. a bristle bar; 8. a connecting assembly; 81. c-shaped buckles; 82. a T-shaped rod; 83. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A closed-cycle spray dryer for a laboratory, referring to fig. 1 and 2, comprises a box body 1, wherein an air supply pipe (not shown in the figure) and a mother liquor box (not shown in the figure) are fixedly arranged in the box body 1, a heater 13 and a fan 14 are arranged on the air supply pipe, the fan 14 provides power for air circulation, and the heater 13 is used for heating air.

An air inlet rectifying chamber 2, a drying chamber 3, a cyclone separator 4, a connecting pipe 5 and a condenser 6 are sequentially connected outside the box body 1 in a sealing manner, the air inlet rectifying chamber 2 is connected with one end of an air supply pipe in a sealing manner, and the condenser 6 is connected with the other end of the air supply pipe in a sealing manner; the air inlet rectification chamber 2 is provided with a liquid inlet pipe 21, one end of the liquid inlet pipe 21 is communicated with the air inlet rectification chamber 2, and the other end is sealed.

The liquid inlet pipe 21 is connected with a liquid conveying pipe 22 and a high-speed centrifugal atomizer 23, the other end of the liquid conveying pipe 22 is connected with the mother liquor box, and the high-speed centrifugal atomizer 23 can atomize the liquid material input into the liquid inlet pipe 21, so that hot air drying is facilitated. Inert gas is introduced into the air supply pipe, so that flammable and explosive substances can be dried.

Referring to fig. 3, a collection tank 7 is disposed at a lower port of the cyclone 4, a first flange 41 is fixedly disposed on an outer wall of a lower opening of the cyclone 4, a second flange 71 is fixedly disposed on an outer wall of an opening of the collection tank 7, and the first flange 41 and the second flange 71 are connected by a connection assembly 8. The connecting assembly 8 includes a C-shaped catch 81 and a T-shaped rod 82, the C-shaped catch 81 is caught on the first flange 41 and the second flange 71, a catching space of the C-shaped catch 81 is larger than a sum of a thickness of the first flange 41 and a thickness of the second flange 71, and the T-shaped rod 82 is screw-mounted on the C-shaped catch 81. When the first flange 41 and the second flange 71 are fixed, the T-shaped rod 82 abuts against one side, away from the second flange 71, of the first flange 41, and a sealing ring 83 made of rubber is tightly sleeved at the junction of the outer side walls of the first flange 41 and the second flange 71, so that a sealing effect is achieved, and the probability of air leakage is reduced.

In order to reduce the probability of falling of the powder when the collecting tank 7 is detached, an annular groove (not shown in the figure) is formed in the lower surface of the lower opening of the first flange 41, an annular ring 72 is fixedly arranged on the upper surface of the second flange 71, the annular ring 72 is in plug fit with the annular groove, the width of one end, away from the second flange 71, of the annular ring 72 is smaller than the width of a notch of the annular groove, and the arrangement of the annular ring 72 can reduce the probability of falling of the powder on the opening edge of the collecting tank 7.

Referring to fig. 4, after the powder in the collecting tank 7 is poured out, some powder often remains on the inner wall and needs to be brushed away, so that the bottom of the collecting tank 7 is recessed into the tank to form an accommodating groove 73, a concave elastic clip 74 is fixedly arranged at the bottom of the accommodating groove 73, and the elastic clip 74 does not protrude out of the accommodating groove 73; the elastic clip 74 holds a bristle bar 75, and the bristle bar 75 is used to brush the inner wall of the collection tank 7, which is convenient.

Referring to fig. 2, a temperature sensor 51 and a display screen 52 electrically connected to the temperature sensor 51 are fixedly installed on the connection pipe 5, so that a worker can check the temperature of hot air constantly, and timely adjustment is facilitated.

The working principle of the embodiment is as follows:

when the hot air drying device is used, the heater 13 and the fan 14 are started to carry out hot air conveying, feed liquid is dried by hot air in the drying chamber 3, hot air with feed powder is separated in the cyclone separator 4, the feed powder enters the collecting tank 7, the hot air with water vapor enters the condenser 6, the water vapor is condensed and liquefied into water, and the dried hot air is conveyed back to the air pipe again to be heated so as to circulate.

After the drying is completed, the drain valve is opened to discharge the condensed water.

Rotate T shape pole 82, take off C shape buckle 81, can take off holding vessel 7 to can take off the brush hair pole 75 at the tank bottoms, brush holding vessel 7 inner wall, will remain under the material brush of inner wall.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a laboratory closed cycle spray dryer, includes box (1), be provided with blast pipe and mother liquor case in box (1), be provided with heater (13) and fan (14), its characterized in that on the blast pipe: an air inlet rectification chamber (2), a drying chamber (3), a cyclone separator (4), a connecting pipe (5) and a condenser (6) are sequentially connected outside the box body (1) in a sealing manner, the air inlet rectification chamber (2) is connected with one end of the air supply pipe in a sealing manner, and the condenser (6) is connected with the other end of the air supply pipe in a sealing manner; the air inlet rectification chamber (2) is provided with a liquid inlet pipe (21) with one end sealed, the liquid inlet pipe (21) is connected with a liquid conveying pipe (22) and a high-speed centrifugal atomizer (23), the liquid conveying pipe (22) is connected with a mother liquid box, a cyclone separator (4) is hermetically provided with a collecting tank (7), a condenser (6) is provided with a drain valve, and an inert gas is introduced into an air supply pipe.

2. A laboratory closed cycle spray dryer according to claim 1, wherein: the outer wall of the lower opening of the cyclone separator (4) is provided with a first flange (41), the outer wall of the opening of the collecting tank (7) is provided with a second flange (71), and the first flange (41) and the second flange (71) are connected through a connecting assembly (8).

3. A laboratory closed cycle spray dryer according to claim 2 wherein: the connecting assembly (8) comprises a C-shaped buckle (81) clamped on the first flange (41) and the second flange (71) and a T-shaped rod (82) which is installed on the C-shaped buckle (81) in a threaded mode and abuts against one side, away from the second flange (71), of the first flange (41).

4. A laboratory closed cycle spray dryer according to claim 2 wherein: and a sealing ring (83) is tightly sleeved at the junction of the outer side walls of the first flange (41) and the second flange (71).

5. A laboratory closed cycle spray dryer according to claim 2 wherein: an annular groove is formed in the lower surface of the lower opening of the cyclone separator (4), and an annular ring (72) in plug-in fit with the annular groove is arranged on the upper surface of the opening of the collecting tank (7).

6. The laboratory closed cycle spray dryer of claim 5, wherein: the width of one end, far away from the collecting tank (7), of the annular ring (72) is smaller than that of the notch of the annular groove.

7. A laboratory closed cycle spray dryer according to claim 1, wherein: the bottom of collection jar (7) is sunken in to the jar and is formed holding tank (73), can dismantle in holding tank (73) and be provided with brush hair pole (75).

8. The laboratory closed cycle spray dryer of claim 7, wherein: the accommodating groove (73) is provided with a concave elastic clamping buckle (74), and the brush hair rod (75) is clamped on the elastic clamping buckle (74).

9. A laboratory closed cycle spray dryer according to claim 1, wherein: and a temperature sensor (51) and a display screen (52) electrically connected with the temperature sensor (51) are arranged on the connecting pipe (5).