CN210425774U

CN210425774U - Vacuum drying equipment

Info

Publication number: CN210425774U
Application number: CN201920472145.XU
Authority: CN
Inventors: 邓哲
Original assignee: Wuhan Natural Innovation Technology Co Ltd
Current assignee: Wuhan Natural Innovation Technology Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-04-28
Anticipated expiration: 2029-04-09

Abstract

The utility model provides a vacuum drying equipment, including drying chamber, refrigerating unit, cooling coil, steam adsorption device and vacuum pump, cooling coil sets up in the drying chamber side, and cooling coil's both ends all communicate with refrigerating unit, and steam adsorption device communicates with drying chamber, cooling coil and vacuum pump respectively. The utility model has the advantages that through the structure of the steam adsorption device, steam generated when materials in the drying chamber are heated in a vacuum state is better adsorbed and condensed, so that the drying and dehumidifying effects are good, and the load and the power consumption of the vacuum pump can be reduced; the protrusions in the collecting pipe are arranged in a staggered manner, so that the capture area can be increased, and the steam discharged by the drying box can be condensed into water more quickly; the cooling pipeline of the collecting pipe is communicated with the cooling coil through a tee joint, so that one set of refrigerating unit can be shared, and the pipeline of the equipment is simplified.

Description

Vacuum drying equipment

Technical Field

The utility model relates to a drying technology field especially relates to a vacuum drying equipment.

Background

In the fields of pharmaceutical, chemical and food industry, drying equipment is often used. Different from the traditional heating drying, the vacuum drying is to change the moisture from solid to gas at a lower temperature, the drying effect is good, the active ingredients in the raw materials are basically not generated, and the process is simple and has good safety. However, the existing vacuum drying equipment generally has the defects of long drying time and large energy consumption.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a dry abundant, the high vacuum drying equipment of drying efficiency.

The technical scheme of the utility model is realized like this: a vacuum drying device comprises a drying chamber (1), a refrigerating unit (2), a cooling coil (3), a steam adsorption device (4) and a vacuum pump (5), wherein the cooling coil (3) is arranged on the side surface of the drying chamber (1), and two ends of the cooling coil (3) are communicated with the refrigerating unit (2);

the steam adsorption device (4) comprises a hollow shell (41) and a collecting pipe (42), a feeding hole and a discharging hole are formed in the shell (41), and the feeding hole and the discharging hole of the shell (41) are communicated with the cooling coil (3); a through collecting pipe (42) is arranged in the shell (41), the air inlet end of the collecting pipe (42) is communicated with the drying chamber (1), the air outlet end of the collecting pipe (42) is communicated with the air inlet end of the vacuum pump (5), and a plurality of protruding parts (40) are arranged on the inner surface of the collecting pipe (42); the collecting pipe (42) is also provided with a first heater (6) in a surrounding way.

In addition to the above technical solution, preferably, the protrusion (40) extends obliquely upward along an inner surface of one side of the collection pipe (42) toward an inner surface of the other side.

On the basis of the technical scheme, preferably, a plurality of partition plates (11) are arranged in the drying chamber (1), the side surfaces of the partition plates (11) are fixedly connected with the inner surface of the drying chamber (1), and the partition plates (11) are arranged at equal intervals along the vertical direction.

Preferably, the partition plate (11) is provided with a limiting roller (12) and a tray (13), the tray (13) is arranged at the top of the partition plate (11), and the bottom surface of the tray (13) is in sliding connection with the upper surface of the partition plate (11); the limiting roller (12) is hinged with the upper surface of the partition plate (11), and the outer surface of the limiting roller (12) is rotatably connected with the side surface of the tray (13).

Still preferably, a plurality of second heaters (7) are arranged in the partition plate (11) at the bottom of the tray (13), and the second heaters (7) are arranged at equal intervals along the horizontal direction.

On the basis of the technical scheme, the refrigerator further comprises a controller (10), and the controller (10) is electrically connected with the refrigerating unit (2), the vacuum pump (5), the first heater (6) and the second heater (7) respectively.

Preferably, the cooling coil (3) is further provided with a first tee joint (8) and a second tee joint (9), and the first tee joint (8) is respectively communicated with the cooling coil (3) and the feed inlets of the shell (41); the second tee joint (9) is respectively communicated with the cooling coil (3) and the discharge hole of the shell (41).

Further preferably, a first switch valve (43) is arranged on the feeding hole of the shell (41); a second switch valve (44) is arranged on a discharge hole of the shell (41), and the first switch valve (43) and the second switch valve (44) are both electrically connected with the controller (10).

Still further preferably, a third switch valve (45) is arranged at the air inlet end of the collecting pipe (42), a fourth switch valve (46) is arranged at the air outlet end of the collecting pipe (42), and the third switch valve (45) and the fourth switch valve (46) are both electrically connected with the controller (10).

The utility model provides a pair of vacuum drying equipment for prior art, has following beneficial effect:

(1) the utility model has the advantages that through the structure of the steam adsorption device, steam generated when materials in the drying chamber are heated in a vacuum state is better adsorbed and condensed, so that the drying and dehumidifying effects are good, and the load and the power consumption of the vacuum pump can be reduced;

(2) the protrusions in the collecting pipe are arranged in a staggered manner, so that the capture area can be increased, and the steam discharged by the drying box can be condensed into water more quickly;

(3) the cooling pipeline of the collecting pipe is communicated with the cooling coil pipe through a tee joint, so that a set of refrigerating units can be shared, and the pipeline and energy consumption of equipment are simplified;

(4) limiting plates and trays on the partition plates are arranged in a staggered mode, and the second heaters are arranged inside the partition plates, so that the heat exchange area of the heaters and the trays is increased, and the drying effect under vacuum is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a vacuum drying apparatus according to the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a front cross-sectional view of the steam adsorption device of the vacuum drying apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a vacuum drying device, including drying chamber 1, refrigerating unit 2, cooling coil 3, steam adsorption equipment 4, vacuum pump 5 primary heater 6, secondary heater 7, first tee bend 8, second tee bend 9 and controller 10. Wherein, cooling coil 3 sets up in drying chamber 1 side, and cooling coil 3's both ends all communicate with refrigerating unit 2. The drying chamber 1 can rapidly reduce the temperature in the drying chamber 1 to about minus 40 ℃ through the circulating refrigeration of the refrigerating unit 2 and the cooling coil 3, and water in the material can form solid ice. The controller 10 is electrically connected with the refrigerating unit 2, the vacuum pump 5, the first heater 6 and the second heater 7 respectively. The refrigerating unit 2 is a common refrigerating device and comprises an evaporator, a condenser and a compressor, the refrigerating unit 2 is communicated with the cooling coil 3 to form a closed circulating pipeline, and the temperature in the drying chamber 1 can be rapidly reduced to the required pre-freezing temperature. The vacuum pump 5 can form a vacuum environment for the drying chamber 1 after cooling, and is ready for the subsequent drying process.

As shown in fig. 1 and fig. 3, the vapor adsorbing device 4 includes a hollow casing 41 and a collecting pipe 42, the casing 41 is provided with a feeding port and a discharging port, and both the feeding port and the discharging port of the casing 41 are communicated with the cooling coil 3; a through collecting pipe 42 is arranged in the housing 41, the air inlet end of the collecting pipe 42 is communicated with the drying chamber 1, the air outlet end of the collecting pipe 42 is communicated with the air inlet end of the vacuum pump 5, a plurality of protrusions 40 are arranged on the inner surface of the collecting pipe 42, and the protrusions 40 extend upwards along the inner surface of one side of the collecting pipe 42 in an inclined mode towards the inner surface of the other side. The collecting pipe 42 is also provided with a first heater 6 around it.

The steam adsorption device 4 is used for cooling and vacuumizing the materials in the drying chamber 1, water in the materials in the tray 13 forms steam under the heating of the second heater 7 and is discharged, the steam is condensed into water when passing through the collecting pipe 42, and the bottom of the steam adsorption device 4 is also provided with a drain pipe 47 which can periodically discharge the condensed water.

Preferably, the projection 40 extends obliquely upward toward the air inlet end of the collector tube 42. At this time, the protrusion 40 extends in a direction opposite to the flow direction of the steam entering the collecting pipe 42, so that the steam contacts the surface of the protrusion 40 to be rapidly condensed into water. When the collecting pipe 42 is frozen or frosted, the first heater 6 heats the collecting pipe 42 to perform defrosting treatment, and the defrosted water is discharged through the water discharge pipe 47.

As shown in fig. 2, a plurality of partition plates 11 are provided in the drying chamber 1, the side surfaces of the partition plates 11 are fixedly connected to the inner surface of the drying chamber 1, and the partition plates 11 are equidistantly provided in the vertical direction. The partition plate 11 is provided with a limiting roller 12 and a tray 13, the tray 13 is arranged at the top of the partition plate 11, and the bottom surface of the tray 13 is in sliding connection with the upper surface of the partition plate 11; the limiting roller 12 is hinged with the upper surface of the partition board 11, and the outer surface of the limiting roller 12 is rotatably connected with the side surface of the tray 13. A plurality of second heaters 7 are arranged in the partition plate 11 at the bottom of the tray 13, and the second heaters 7 are arranged at equal intervals along the horizontal direction. The second heater 7 only needs to be arranged at the bottom of the tray 13, the heating range of the second heater can cover the whole tray 7, the heat exchange efficiency can be improved, and the energy consumption is reduced.

As shown in fig. 1 and fig. 3, the cooling coil 3 is further provided with a first tee joint 8 and a second tee joint 9, and the first tee joint 8 is respectively communicated with the cooling coil 3 and the feed inlets of the shell 41; the second tee 9 is respectively communicated with the cooling coil 3 and the discharge hole of the shell 41. A first switch valve 43 is arranged on the feeding hole of the shell 41; a second switch valve 44 is arranged on the discharge hole of the shell 41, and the first switch valve 43 and the second switch valve 44 are both electrically connected with the controller (10). The feed inlet and the discharge outlet of the shell 41 are connected in parallel on the cooling coil 3 through the first tee joint 8 and the second tee joint 9, so that the pipeline layout and the equipment floor area can be simplified, and the energy consumption can be saved. The inlet and outlet of the housing 41 may be communicated with the circulation line of the cooling coil 3 through the first and

second switching valves

43 and 44, so that the vapor heated by the second heater 7 is adsorbed and captured in the vapor adsorbing device 4. When the first heater 6 defrosts the collecting pipe 42, the first and

second switching valves

43 and 44 are closed, and the circulation in the cooling coil 3 is not disturbed.

In addition, the air inlet end of the collecting pipe 42 is provided with a third switch valve 45, the air outlet end of the collecting pipe 42 is provided with a fourth switch valve 46, and both the third switch valve 45 and the fourth switch valve 46 are electrically connected with the controller 10.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum drying apparatus, characterized in that: the drying device comprises a drying chamber (1), a refrigerating unit (2), a cooling coil (3), a steam adsorption device (4) and a vacuum pump (5), wherein the cooling coil (3) is arranged on the side surface of the drying chamber (1), and two ends of the cooling coil (3) are communicated with the refrigerating unit (2);

2. A vacuum drying apparatus as claimed in claim 1, wherein: the projection (40) extends obliquely upward along the inner surface of one side of the collection tube (42) toward the inner surface of the other side.

3. A vacuum drying apparatus as claimed in claim 1, wherein: a plurality of partition plates (11) are arranged in the drying chamber (1), the side faces of the partition plates (11) are fixedly connected with the inner surface of the drying chamber (1), and the partition plates (11) are arranged at equal intervals along the vertical direction.

4. A vacuum drying apparatus as claimed in claim 3, wherein: the limiting roller (12) and the tray (13) are arranged on the partition plate (11), the tray (13) is arranged at the top of the partition plate (11), and the bottom surface of the tray (13) is in sliding connection with the upper surface of the partition plate (11); the limiting roller (12) is hinged with the upper surface of the partition plate (11), and the outer surface of the limiting roller (12) is rotatably connected with the side surface of the tray (13).

5. A vacuum drying apparatus as claimed in claim 4, wherein: a plurality of second heaters (7) are arranged in the partition plate (11) at the bottom of the tray (13), and the second heaters (7) are arranged at equal intervals along the horizontal direction.

6. A vacuum drying apparatus as claimed in claim 1, wherein: the refrigerator further comprises a controller (10), wherein the controller (10) is electrically connected with the refrigerating unit (2), the vacuum pump (5), the first heater (6) and the second heater (7) respectively.

7. A vacuum drying apparatus as claimed in claim 6, wherein: the cooling coil (3) is also provided with a first tee joint (8) and a second tee joint (9), and the first tee joint (8) is respectively communicated with the cooling coil (3) and the feed inlets of the shell (41); the second tee joint (9) is respectively communicated with the cooling coil (3) and the discharge hole of the shell (41).

8. A vacuum drying apparatus as claimed in claim 7, wherein: a first switch valve (43) is arranged on a feed inlet of the shell (41); a second switch valve (44) is arranged on a discharge hole of the shell (41), and the first switch valve (43) and the second switch valve (44) are both electrically connected with the controller (10).

9. A vacuum drying apparatus as claimed in claim 7, wherein: the air inlet end of the collecting pipe (42) is provided with a third switch valve (45), the air outlet end of the collecting pipe (42) is provided with a fourth switch valve (46), and the third switch valve (45) and the fourth switch valve (46) are electrically connected with the controller (10).