CN212657995U

CN212657995U - Rotary vacuum drier

Info

Publication number: CN212657995U
Application number: CN202021194663.9U
Authority: CN
Inventors: 汪鑫
Original assignee: Nanjing Ruibang Pharmaceutical Equipment Co ltd
Current assignee: Nanjing Ruibang Pharmaceutical Equipment Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-05
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to the technical field of drying machines, in particular to a rotary vacuum drying machine, which comprises a drying box, wherein a drying cavity, a rotary drum, a microwave generator, an exhaust pipe, an air inlet fan, an air outlet fan and a rotary assembly are arranged in the drying box; in practical application, materials are placed into the rotary drum, the vacuum pump enables the whole drying cavity to be in a vacuum state, the microwave generator continuously and uniformly heats the materials in the drying cavity, the drying effect is good, the rotary drum is driven to rotate by the rotary assembly to prevent the materials from caking, water vapor enters the drying cavity through the water outlet hole, the air inlet fan blows the water vapor in the drying cavity to the air outlet, and the air outlet fan sucks the water vapor into the condenser to prevent the vacuum pump from soaking; the utility model discloses can prevent the material caking, prevent that the vacuum pump from soaking, the stoving chamber heaies up evenly, and it is effectual to dry.

Description

Rotary vacuum drier

Technical Field

The utility model relates to a desiccator technical field specifically is a rotation vacuum drying machine.

Background

Vacuum drying, also known as resolution drying, is a drying method in which a material is placed under negative pressure and is properly heated to reach a boiling point under a negative pressure state or is solidified by cooling so as to dry the material through a melting point. The melting point boiling point of the water in the material is reduced along with the improvement of the vacuum degree in the negative pressure state, and the vacuum pump is used for gap dehumidification to reduce the water vapor content, so that the water and other solutions in the material can obtain enough kinetic energy to be separated from the surface of the material. The vacuum drying can better keep the original characteristics of partial materials which are easy to oxidize and have chemical changes in the drying process due to the fact that the vacuum drying is in a negative pressure state to isolate air, and the materials can be better protected in a vacuumizing mode after inert gas is injected.

The existing vacuum drying machine has the following problems during drying: firstly, materials can be attached to the bottom of the dryer and cannot be stirred, so that the materials are easy to agglomerate, and the quality of products is influenced; secondly, when the existing vacuum drying machine is used for drying, the vacuum pump is easy to soak due to the fact that the vacuum pump is subjected to gap dehumidification through the vacuum pump, and the vacuum pump is damaged; and thirdly, the temperature of the drying cavity in the vacuum dryer is not uniformly increased, so that the drying effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to foretell not enough, provide one kind can prevent the material caking, prevent that the vacuum pump from soaking, and the stoving chamber heaies up evenly, dries effectual rotation vacuum drying machine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a rotation vacuum drying machine, includes the drying cabinet, be equipped with the stoving chamber in the drying cabinet, be equipped with rotary drum in the stoving chamber, it is equipped with a plurality of microwave generators to inlay on the stoving intracavity wall, stoving chamber top and bottom are just respectively to being provided with blast pipe and air-supply line, the air-supply line bottom is equipped with air intake fan, be equipped with air-out fan in the blast pipe, the drying cabinet top is equipped with the condenser, the condenser inlet end with air-out fan air outlet intercommunication, drying cabinet one side is equipped with the vacuum pump, the vacuum pump with the stoving chamber passes through the exhaust column intercommunication, rotary drum drive is connected with the gyration subassembly, a plurality of apopores have been seted up on the rotary drum section of thick bamboo wall, air intake fan air outlet is just right air-supply line and rotary drum set up, air.

Furthermore, a stirring shaft is arranged in the rotary drum, one end of the stirring shaft penetrates out of the rotary drum and is fixedly connected to the inner wall of the drying cavity, and stirring blades are arranged on the stirring shaft in the rotary drum.

Furthermore, the rotary component comprises a rotary motor arranged in the drying box, a driving tooth is arranged on an output shaft of the rotary motor, a rotating shaft is arranged at one end of the rotary drum, the rotating shaft penetrates out of the inner wall of the drying cavity and is provided with a driven tooth, and the driven tooth is in driving connection with the driving tooth through a belt.

Furthermore, a plurality of temperature-sensitive switches are embedded on the inner wall of the drying cavity and electrically connected with the microwave generator.

Furthermore, an electric valve is arranged in the exhaust pipe and electrically connected with the air inlet fan.

And the input end of the water purifier is communicated with the liquid outlet end of the condenser through a water purifying pipe.

Further, a sealing door is arranged on the front face of the drying box; the rotary drum is characterized in that the upper end and the lower end of the rotary drum are respectively provided with a feeding pipe and a discharging pipe, a feeding valve is arranged in the feeding pipe, and a discharging valve is arranged in the discharging pipe.

The utility model has the advantages that:

in practical application, materials are placed into the rotary drum, the vacuum pump enables the whole drying cavity to be in a vacuum state, the microwave generator continuously and uniformly heats the materials in the drying cavity, the drying effect is good, the rotary drum is driven to rotate by the rotary assembly to prevent the materials from caking, water vapor enters the drying cavity through the water outlet hole, the air inlet fan blows the water vapor in the drying cavity to the air outlet, and the air outlet fan sucks the water vapor into the condenser to prevent the vacuum pump from soaking; the utility model discloses can prevent the material caking, prevent that the vacuum pump from soaking, the stoving chamber heaies up evenly, and it is effectual to dry.

Drawings

FIG. 1 is a sectional view of the whole structure of the present invention;

FIG. 2 is a schematic structural view of a rotary drum according to the present invention;

reference numerals: a drying oven 1; a stirring shaft 11; a stirring blade 12; a drying cavity 2; a rotary drum 3; a water outlet hole 31; a feed tube 32; a discharge pipe 33; a microwave generator 4; a temperature sensitive switch 41; an exhaust pipe 51; an air inlet duct 52; an exhaust duct 53; a clear water pipe 54; an air intake fan 6; an air outlet fan 7; a condenser 8; a water purifier 81; a vacuum pump 9; a sealing door 100; a rotary motor 101; a rotating shaft 102; a belt 103.

Detailed Description

As shown in fig. 1 and fig. 2, a rotary vacuum dryer comprises a drying box 1, a drying chamber 2 is arranged in the drying box 1, a rotary drum 3 is arranged in the drying chamber 2, a plurality of microwave generators 4 are embedded on the inner wall of the drying chamber 2, an exhaust pipe 51 and an air inlet pipe 52 are respectively arranged at the top and the bottom of the drying chamber 2 in a facing manner, an air inlet fan 6 is arranged at the bottom of the air inlet pipe 52, an air outlet fan 7 is arranged in the exhaust pipe 51, a condenser 8 is arranged at the top of the drying box 1, the air inlet end of the condenser 8 is communicated with the air outlet of the air outlet fan 7, a vacuum pump 9 is arranged at one side of the drying box 1, the vacuum pump 9 is communicated with the drying chamber 2 through an air exhaust pipe 53, the rotary drum 3 is connected with a rotary component in a driving manner, a plurality of water outlet holes 31 are arranged on the wall of the rotary drum 3, and an electric valve is arranged at the air inlet of the air inlet fan 6.

In practical application, materials are put into the rotary drum 3, the electric valve is closed, the whole drying cavity 2 is in a vacuum state through the vacuum pump 9, the drying cavity 2 is enabled to generate heat under the action of a high-frequency electromagnetic field through the microwave generator 4, polar molecules in the materials absorb microwave energy, the moisture diffusion rate is accelerated under a certain vacuum degree, the materials in the drying cavity 2 are uniformly heated, the drying effect is good, the rotary drum 3 is driven to rotate through the rotary assembly, the materials can be prevented from caking, water vapor enters the drying cavity 2 through the water outlet hole 31, the water vapor in the drying cavity 2 is blown to the air outlet through the air inlet fan 6, and the water vapor is sucked into the condenser 8 through the air outlet fan 7 to prevent the vacuum pump 9 from being soaked with water; the utility model discloses can prevent the material caking, prevent that vacuum pump 9 from soaking, 2 intensification in stoving chamber are even, and it is effectual to dry.

As shown in fig. 1 and fig. 2, a stirring shaft 11 is arranged in the rotary drum 3, one end of the stirring shaft 11 penetrates through the rotary drum 3 and is fixedly connected to the inner wall of the drying chamber 2, and stirring blades 12 are arranged on the stirring shaft 11 in the rotary drum 3; in this embodiment, be in vacuum state in stoving chamber 2, when the gyration subassembly drive was rotatory through rotary drum 3, because (mixing) shaft 11 is fixed motionless, stirring vane 12 on the (mixing) shaft 11 both can produce the stirring effect to the material in rotary drum 3, can prevent effectively that the material from agglomerating for breaking away from of material and moisture, improve the drying efficiency of material.

As shown in fig. 1 and fig. 2, the rotating assembly includes a rotating motor 101 disposed in the drying oven 1, an output shaft of the rotating motor 101 is provided with driving teeth, one end of the rotating drum 3 is provided with a rotating shaft 102, the rotating shaft 102 penetrates through the inner wall of the drying cavity 2 and is provided with driven teeth, and the driven teeth are in driving connection with the driving teeth through a belt 103; in this embodiment, rotation motor 101 drive tooth rotation, and the drive tooth passes through belt 103 and drives driven tooth rotation, and driven tooth drives axis of rotation 102 and rotary drum 3 rotation, realizes the material gyration heating, can effectively prevent the material caking for the material breaks away from with moisture, improves the drying efficiency of material.

As shown in fig. 1 and fig. 2, a plurality of temperature-sensitive switches 41 are embedded on the inner wall of the drying cavity 2, and the temperature-sensitive switches 41 are electrically connected with the microwave generator 4; in this embodiment, when the temperature in the drying cavity 2 is too high, the temperature-sensitive switch 41 automatically cuts off the power supply to the microwave generator 4, so as to prevent the material from being baked out due to the too high temperature in the drying cavity 2, the microwave generator 4 enables the drying cavity 2 to absorb microwave energy to generate heat under the action of the high-frequency electromagnetic field, the moisture diffusion rate is accelerated under a certain vacuum degree, the microwave energy can dry and heat the material uniformly, and the drying effect is good.

As shown in fig. 1 and fig. 2, an electric valve is arranged in the exhaust pipe 53, and the electric valve is electrically connected to the air intake fan 6; in this embodiment, be in vacuum state in stoving chamber 2, electrovalve self-closing exhaust column 53 prevents that air-out fan 7 from getting into the electrovalve from exhaust column 53 with steam when absorbing condenser 8, effectively prevents that vacuum pump 9 from soaking.

As shown in fig. 1 and fig. 2, the system further comprises a water purifier 81, wherein the input end of the water purifier 81 is communicated with the liquid outlet end of the condenser 8 through a purified water pipe 54; in this embodiment, the waste water discharged from the condenser 8 is sent to the water purifier 81 through the purified water pipe 54 to be purified, thereby preventing the generated waste water from affecting the working environment.

As shown in fig. 1 and fig. 2, the drying box 1 is provided with a sealing door 100 on the front surface; a feed pipe 32 and a discharge pipe 33 are respectively arranged at the upper end and the lower end of the rotary drum 3, a feed valve is arranged in the feed pipe 32, and a discharge valve is arranged in the discharge pipe 33; in this embodiment, the sealing door 100 on the front surface of the drying box 1 is opened to feed the material into the feeding pipe 32 and discharge the material from the discharging pipe 33; when the rotary drum 3 is to start to rotate, the feed valve and the discharge valve are closed, so that the material is prevented from being thrown out of the rotary drum 3 due to the centrifugal force generated by the rotation of the rotary drum 3, and the rotary drying effect is better.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope and spirit of the invention as defined in the accompanying claims.

Claims

1. A rotary vacuum drier is characterized in that: comprises a drying box (1), a drying cavity (2) is arranged in the drying box (1), a rotary drum (3) is arranged in the drying cavity (2), a plurality of microwave generators (4) are embedded on the inner wall of the drying cavity (2), the top and the bottom of the drying cavity (2) are respectively and rightly provided with an exhaust pipe (51) and an air inlet pipe (52), an air inlet fan (6) is arranged at the bottom of the air inlet pipe (52), an air outlet fan (7) is arranged in the exhaust pipe (51), a condenser (8) is arranged at the top of the drying box (1), the air inlet end of the condenser (8) is communicated with the air outlet of the air outlet fan (7), a vacuum pump (9) is arranged at one side of the drying box (1), the air pipe (9) of the vacuum pump is communicated with the drying cavity (2) through a pumping cavity (53), the rotary drum (3) is in driving connection with a rotary assembly, a plurality of water outlet holes (31, the air outlet of the air inlet fan (6) is opposite to the air inlet pipe (52) and the rotary drum (3), and the air inlet of the air inlet fan (6) is provided with an electric valve.

2. Rotary vacuum dryer according to claim 1, characterized in that: a stirring shaft (11) is arranged in the rotary drum (3), one end of the stirring shaft (11) penetrates out of the rotary drum (3) and is fixedly connected to the inner wall of the drying cavity (2), and stirring blades (12) are arranged on the stirring shaft (11) in the rotary drum (3).

3. Rotary vacuum dryer according to claim 1, characterized in that: the rotary component comprises a rotary motor (101) arranged in the drying box (1), a driving tooth is arranged on an output shaft of the rotary motor (101), a rotating shaft (102) is arranged at one end of the rotary drum (3), the rotating shaft (102) penetrates out of the inner wall of the drying cavity (2) and is provided with a driven tooth, and the driven tooth is in driving connection with the driving tooth through a belt (103).

4. Rotary vacuum dryer according to claim 1, characterized in that: the inner wall of the drying cavity (2) is embedded with a plurality of temperature-sensitive switches (41), and the temperature-sensitive switches (41) are electrically connected with the microwave generator (4).

5. Rotary vacuum dryer according to claim 1, characterized in that: an electric valve is arranged in the exhaust pipe (53), and the electric valve is electrically connected with the air inlet fan (6).

6. Rotary vacuum dryer according to claim 1, characterized in that: still include water purifier (81), water purifier (81) input passes through water purification pipe (54) intercommunication condenser (8) play liquid end.

7. Rotary vacuum dryer according to claim 1, characterized in that: the front surface of the drying box (1) is provided with a sealing door (100); inlet pipe (32) and discharging pipe (33) have been seted up respectively to rotary drum (3) upper end and lower extreme, be equipped with the feed valve in inlet pipe (32), be equipped with the bleeder valve in discharging pipe (33).