CN215983584U

CN215983584U - Continuous production type vacuum spray freeze drying equipment

Info

Publication number: CN215983584U
Application number: CN202122467068.9U
Authority: CN
Inventors: 龚杰; 刘超
Original assignee: Tofflon Science and Technology Group Co Ltd
Current assignee: Tofflon Science and Technology Group Co Ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-03-08
Anticipated expiration: 2031-10-13

Abstract

The utility model discloses a continuous production type vacuum spray freeze drying device, which comprises a spray cylinder for granulation, a spray device for spraying, a disc type drying box for freeze drying and a condensing box with a coil pipe, and aims to overcome the defects of the prior art.

Description

Continuous production type vacuum spray freeze drying equipment

Technical Field

The utility model relates to a continuous production type vacuum spray freeze drying device.

Background

The basic technology of vacuum spray freeze drying is to freeze the solution to be freeze dried in a closed environment, and then to give certain temperature and vacuum degree to take out the water in the frozen solution by sublimation. On the basis, the solution is sprayed into equipment for vacuum quick freezing by combining a spray drying technology, and then continuous freeze drying is realized by combining a disc drying technology.

The continuous production type vacuum spray freeze drying combines the technologies of spray drying, disc drying and freeze drying, can be used for continuous and rapid drying, and can ensure the high activity and uniformity of materials.

Patent publication No. CN205228009U discloses a full-automatic closed spray freeze-drying production facility, and it adopts the form of cylinder to dry in the drying process, and main heat transfer face is the bottom, and heat transfer area is less, has reduced drying efficiency. In addition, the dryer is not directly connected with a condenser, and in the drying process, water vapor needs to enter the condenser again through the spraying cylinder for condensation, so that the blanking and spraying granulation effects are influenced. Simultaneously, freeze-drying divide into once sublimes and the secondary sublimes, and rotatory barrel presss from both sides the cover and can't have two different temperatures simultaneously, can only go on with lower temperature, has reduced drying efficiency.

Therefore, how to increase the heat exchange area, reduce the influence of the water vapor flowing process on spray granulation and simultaneously satisfy the required conditions of primary sublimation and secondary sublimation is the problem that needs to be solved at present, and therefore the continuous production type vacuum spray freeze-drying equipment is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide continuous production type vacuum spray freeze drying equipment, which accelerates the drying rate and better meets the requirement of continuous production on the basis of the prior vacuum spray freeze drying equipment.

The technical scheme for realizing the purpose is as follows: a continuous production type vacuum spray freeze drying device,

a spray cylinder for use in the granulation of a granular material,

a spraying device for spraying a mist, comprising,

a tray type drying box for freeze-drying,

a condenser box with a coil for capturing moisture.

Preferably, the spraying device comprises an atomizing nozzle, the atomizing nozzle is inserted into the spraying cylinder, the jacket is tightly attached to the conical wall section of the spraying cylinder, and the lower end of the spraying cylinder is provided with a blanking valve.

Preferably, the first drying tray and the second drying tray are respectively arranged in the tray type drying box, and the first drying tray and the second drying tray are respectively provided with a first rake arm and a second rake arm; the disc drying cabinet lower extreme is provided with the discharge gate, discharge gate department is provided with the separation valve, the feed bin is connected to separation valve lower extreme, the feed bin lower extreme sets up the bleeder valve, the feed bin is provided with admission valve and the valve of managing to find time respectively, the discharge gate lower extreme sets up the hopper.

Preferably, the condensation case includes the condenser, the condenser passes through first pipeline connection spray cylinder, be provided with the vacuum valve on the first pipeline, the condenser passes through second pipeline connection disk drying cabinet, be provided with the mesophragma valve on the second pipeline.

Preferably, the system further comprises an auxiliary system, wherein the auxiliary system comprises a vacuum system and a liquid distribution system; the vacuum system connects the evacuation valve and the condenser; the liquid preparation system is respectively communicated with the jacket and a silicone oil circulating pipeline in the disc drying box, and the silicone oil circulating pipeline is communicated with the first rake arm and the second rake arm.

Preferably, the first rake arm and the second rake arm are respectively provided with a rake blade capable of guiding materials, and a contact part of the rake blade and the first drying disk and a contact part of the rake blade and the second drying disk are sleeved with a PTFE (polytetrafluoroethylene) material sheath.

Preferably, the first harrow arm is connected with the second harrow arm, and the first harrow arm is connected with a motor on the disc-type drying box.

The utility model has the beneficial effects that: the first drying disc and the second drying disc are respectively provided with a first rake arm and a second rake arm, rake blades capable of guiding materials are respectively arranged on the first rake arm and the second rake arm, the first rake arm and the second rake arm are connected, and a first rake arm rotary joint is connected with a motor on the disc type drying box, so that the materials can be dried more quickly and better continuously; through setting up disk drying cabinet and using silicon oil as the circulation medium, silicon oil can be through the electrical heating intensification or with refrigerant heat transfer cooling, the silicon oil circulating line of drying disk is the control temperature respectively, and the rake arm has silicon oil with the rake leaf expert on it, can heat refrigeration and make and be more suitable for freeze-drying for drying rate.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention.

In the figure: 1. a spray cylinder; 2. an atomizing nozzle; 3. a jacket; 4. a discharge valve; 6. a motor; 7. a first drying tray; 8. a second drying tray; 9. a first rake arm; 10. a second rake arm; 11. an intake valve; 12. an evacuation valve; 13. a barrier valve; 14. a discharge valve; 15. a hopper; 16. a vacuum valve; 17. a septum valve; 18. a condenser; 19. and (4) coiling the pipe.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

The utility model will be further explained with reference to the drawings.

As shown in fig. 1, a continuous production type vacuum spray freeze-drying apparatus includes a spray cylinder 1, a spraying device, a tray type drying cabinet and a condensing cabinet.

A spray cylinder 1 for use in granulation of a granular material,

a spraying device for spraying a mist, comprising,

a tray type drying box for freeze-drying,

for capturing moisture, a condensation tank with coils 19.

Specifically, atomizer includes atomizing nozzle 2, and in atomizing nozzle 2 pegged graft spray tube 1, 1 conical wall section of spray tube was hugged closely to press from both sides cover 3, and it has silicone oil to press from both sides cover 3 expert, and accessible control silicone oil temperature controls conical wall section temperature, and spray tube 1 lower extreme sets up unloading valve 4, and atomizing nozzle 2 accessible dismantles the mode of quick detach clamp, changes, and the particle diameter change of spraying satisfies through changing atomizing nozzle 2.

Specifically, a first drying tray 7 and a second drying tray 8 are respectively arranged in the tray type drying box, and a first rake arm 9 and a second rake arm 10 are respectively arranged on the first drying tray 7 and the second drying tray 8; the lower end of the disc type drying box is provided with a discharge hole, the discharge hole is provided with a separation valve 13, the lower end of the separation valve 13 is connected with a discharge bin, the lower end of the discharge bin is provided with a discharge valve 14, the discharge bin is respectively provided with an air inlet valve 11 and an evacuation valve 12, the lower end of the discharge hole is provided with a hopper 15, a first rake arm 9 and a second rake arm 10 of the disc type drying box are respectively provided with rake blades capable of guiding materials, the contact parts of the rake blades and a first drying disc 7 and a second drying disc 8 are sleeved with PTFE (polytetrafluoroethylene) material sheaths, the PTFE material sheaths can reduce friction with the first drying disc 7 and the second drying disc 8, the first rake arm 9 and the second rake arm 10 are connected, the first rake arm 9 is connected with a motor 6 on the disc type drying box, the disc type drying box uses silicon oil as a circulating medium, the silicon oil can be heated up through electric heating or cooled down through heat exchange with a refrigerant, the silicon oil circulating pipeline of the drying disc is divided into two ways to respectively control temperature, the rake arms and the rake blades on the rake arms are communicated with silicon oil, so that heating and refrigeration can be realized.

Specifically, the condenser case includes condenser 18, and condenser 18 passes through first pipe connection spray cylinder 1, is provided with vacuum valve 16 on the first pipeline, and condenser 18 passes through the second pipe connection disk drying cabinet, is provided with well partition valve 17 on the second pipeline.

The system comprises a vacuum system, a liquid distribution system and an auxiliary system, wherein the auxiliary system comprises a vacuum system and the liquid distribution system; the vacuum system connects evacuation valve 12 and condenser 18; the liquid preparation system is respectively communicated with the jacket 3 and a silicone oil circulating pipeline in the disc drying box, and the silicone oil circulating pipeline is communicated with the first rake arm 9 and the second rake arm 10.

The working principle is as follows: starting a motor 6, rotating a first rake arm 9 and a second rake arm 10, opening a condenser 18 to cool a coil 19, a jacket 3, a first drying disc 7 and a second drying disc 8, and cooling the first rake arm 9 and the second rake arm 10, opening a blanking valve 4, a blocking valve 13, a vacuum valve 16, a middle partition valve 17 and an evacuation valve 12, vacuumizing the whole system to a required vacuum degree by using a vacuum system, spraying feed liquid into a spray cylinder 1 from a nozzle, freezing the feed liquid into particles in the spray cylinder 1, falling into a disc type dryer through the blanking valve 4, enabling the particles to move on the drying disc through the first rake arm 9, the second rake arm 10 and rake blades on the drying disc, then falling onto the next layer of drying disc, finally falling onto a bottom discharge port, pumping water vapor into the condenser 18 through the vacuum system, closing the blocking valve 13, opening an air inlet valve 11, and returning to normal pressure of a discharge bin, opening bleeder valve 14, the granule flows into hopper 15, and after the ejection of compact, closing bleeder valve 14, admission valve 11 opens and evacuates valve 12, and when the pressure of the ejection of compact storehouse is the same with the interior temperature of tray drying cabinet, open separation valve 13.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous production type vacuum spray freeze-drying apparatus, characterized by comprising:

a spray cylinder (1) for granulation,

a spraying device for spraying a mist, comprising,

a tray type drying box for freeze-drying,

for capturing moisture, a condensation tank with a coil (19).

2. The continuous production type vacuum spray freeze-drying equipment according to claim 1, characterized in that the spraying device comprises an atomizing nozzle (2), the atomizing nozzle (2) is inserted into the spraying cylinder (1), a jacket (3) is tightly attached to the conical wall section of the spraying cylinder (1), and a material discharging valve (4) is arranged at the lower end of the spraying cylinder (1).

3. A continuous production type vacuum spray freeze-drying apparatus according to claim 2, characterized in that the tray drying oven is provided with the first drying tray (7) and the second drying tray (8), respectively, and the first drying tray (7) and the second drying tray (8) are provided with the first rake arm (9) and the second rake arm (10), respectively; the disc drying cabinet lower extreme is provided with the discharge gate, discharge gate department is provided with separation valve (13), the feed bin is connected to separation valve (13) lower extreme, the feed bin lower extreme sets up bleeder valve (14), the feed bin is provided with admission valve (11) and valve (12) of managing to find time respectively, the discharge gate lower extreme sets up hopper (15).

4. A continuous production type vacuum spray freeze-drying apparatus according to claim 3, wherein the condenser tank comprises a condenser (18), the condenser (18) is connected to the spray drum (1) through a first pipe, the first pipe is provided with a vacuum valve (16), the condenser (18) is connected to the tray type drying tank through a second pipe, and the second pipe is provided with a partition valve (17).

5. The continuous production type vacuum spray freeze-drying apparatus according to claim 4, further comprising an auxiliary system, wherein the auxiliary system comprises a vacuum system and a liquid distribution system; the vacuum system connecting the evacuation valve (12) and the condenser (18); the liquid preparation system is respectively communicated with the jacket (3) and a silicone oil circulating pipeline in the disc drying box, and the silicone oil circulating pipeline is communicated with the first rake arm (9) and the second rake arm (10).

6. A continuous vacuum spray freeze-drying apparatus according to claim 3, wherein the first and second arms (9, 10) are respectively provided with blades capable of guiding the material, and the contact parts of the blades and the first and second drying discs (7, 8) are covered with PTFE sheaths.

7. A continuous production type vacuum spray freeze-drying apparatus according to claim 3, characterized in that the first and second rake arms (9, 10) are connected, the first rake arm (9) being connected to the motor (6) on the tray dryer.