CN202993776U

CN202993776U - Continuous vacuum dryer

Info

Publication number: CN202993776U
Application number: CN 201220719517
Authority: CN
Inventors: 陈源森
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-05
Filing date: 2012-12-05
Publication date: 2013-06-12
Anticipated expiration: 2022-12-05

Abstract

A continuous vacuum dryer comprises a drying device and is characterized by further comprising a cooling device and a vacuumizing device, an inner cavity of a shell (1) is communicated with a gas inlet (51) of a condenser (5) in the cooling device through a pipeline, a gas outlet (52) of the condenser (5) is communicated with an extraction pipe of the vacuumizing device, and a water discharging device capable of discharging waste gas and condensation water to the outside is arranged at the bottom of the condenser (5). The continuous vacuum dryer has the advantages that continuous vacuum low-temperature drying in the shell at the temperature of 70 DEG C and under the pressure of -0.07MPa can be achieved, rapid protein oxidation or denaturation of materials in the high-temperature drying process can be avoided effectively so as to improve various nutrients and comprehensiveness of finished products, evaporating temperature is low, loss of heat is reduced, and energy-saving effect is obvious; and the continuous vacuum dryer is in a hermetic state, so that outside air cannot enter inside of the dryer, waste gas treatment amount is decreased, and cost of environment-friendly waste gas treatment is lowered greatly.

Description

Continuous vacuum dryer

Technical field

The utility model relates to a kind of drying equipment technical field, especially refers to a kind of continuous vacuum dryer.

Background technology

Dry purpose is to change wet, unsettled press for extracting juice cake mixture, sleeping slag and concentrate from rear acquisition into dried, stable material.The drying machine kind of using at present is more, and structure also is not quite similar, and summarizes and mainly contains two kinds of drying modes, and a kind of is direct heating, drying, and another kind is the indirect steam oven dry.Directly heating, drying utilizes directly contact material of fire exactly, makes the moisture evaporation in material, reaches the effect of drying materials.Utilize the steam indirect drying to refer to formerly utilize Steam Heating round iron bucket, the good heat conductivity of recycling iron conducts heat to material, makes the moisture evaporation in material, reaches the effect of drying materials.In actual applications, refer to moisture content of material is dried to below 10%.Drying is to realize to certain temperature by adding thermal material, under normal pressure, the evaporating temperature of water vapour is 100 ℃, the high oxidation that can aggravate protein in material of evaporating temperature, and along with the continuous evaporation of moisture, the degree of protein oxidation can be more and more serious.Therefore for fear of the reduction of quality of material, must the reduce evaporating temperature.

Existing a kind of patent No. is that the CN200820178373.8 name is called " a kind of hot plate type drying bed continuous vacuum drying group " Chinese utility model patent and discloses a kind of structure, its structure is: it comprises: cylindrical shell, be provided with main shaft in cylindrical shell, the inwall of cylindrical shell is provided with a body support frame, and the bed body support frame is provided with multi-layer plate-type chuck heater; Main shaft passes the centre bore of each laminated board type chuck heater, and is located between the top and bottom of cylindrical shell; The upper surface of board-like chuck heater is the charge face, and main shaft is provided with a plurality of support arms, and the lower surface of support arm is provided with material rotating plate; Described board-like chuck heater is board-like chuck housing, is provided with the heat conduction pipeline in it; Described multi-layer plate-type chuck heater is divided into heat zone group, middle temperature layer group, cryosphere group and cooling layer group from top to bottom at least; This utility model adopts the Combined type heating system, with drying and cooling and use, reduces thus process procedure, has improved production efficiency and production capacity, and simultaneously, this dryer group can realize the processing of continous vacuum input and output material, solvent recovery and pernicious gas.But its shortcoming is design adopts stereochemical structure, and the drying device physical features is higher, and chance typhoon sky or fortuitous event equipment are fragile, then has this drying equipment more difficult because of the high-land assembling.So its structure awaits to improve.

The utility model content

Technical problem to be solved in the utility model be provide for above-mentioned prior art present situation a kind of can avoid material occur in drying course sharply protein oxidation or sex change phenomenon, improve finished product every nutrition, evaporating temperature low, heat energy loss reduces, energy-saving effect obviously and can realize the continuous vacuum dryer of continuous drying.

the utility model solves the problems of the technologies described above the technical scheme that adopts: this continuous vacuum dryer, include drying device, described drying device includes housing, hollow can pass into the rotating shaft of steam, be provided with charging aperture and discharging opening on housing, described rotating shaft can be arranged in housing rotationally, and an end of described rotating shaft stretches out housing output shaft outer and motor and links, be provided with by annular pipeloop around the heat(ing) coil that forms in described rotating shaft, described heat(ing) coil be spaced and parallel be arranged in rotating shaft, the inner chamber of described heat(ing) coil respectively with the intracavity inter-connection of rotating shaft, can promote the dish leaf that material is made displacement being provided with on the outer peripheral face of described heat(ing) coil when heat(ing) coil rotates with rotating shaft, it is characterized in that: described continuous vacuum dryer also includes cooling device and vacuum extractor, the inner chamber of described housing is connected with the air inlet of condenser in cooling device by pipeline, and the waste gas gas outlet of described condenser is connected with the exhaust tube of vacuum extractor, described condenser bottom is provided with and waste gas condensate water can be discharged extraneous drainage arrangement.

As improvement, described cooling device includes cooling tower and condenser, the condenser pipe of described condenser for being set together with vertically placing side by side, the cooling liquid inlet of described condenser is arranged at the bottom of condenser, described cooling liquid inlet is connected with the cooling liquid outlet of cooling tower through coolant pump by pipeline, and the cooled liquid outlet of described condenser is positioned at the top of condenser, and described liquid outlet is connected with the import of cooling tower by pipeline.

Improve, the steam inlet in described rotating shaft is arranged on an end of rotating shaft again, and be converted into after heat release steam condensate (SC) and More thanThe outlet of steam is positioned on the other end of rotating shaft.

Improve, described rotating shaft is stretched out outer the stretching out of housing and is located to be provided with the seal that can make the housing inner chamber keep sealing state again.

Improve, the top of described housing is provided with the air inducing case of housing inner chamber gas again, and the top of described air inducing case is provided with the gas outlet, and this gas outlet is connected with extraneous sealing with the air inlet of condenser by pipeline.

Improve, compartment of terrain, described housing inner chamber top is provided with the block for material that barrier is dried by the fire again, and the bottom of described each block extend in space between two heat(ing) coils of correspondence.

Improve, described block fixes by the inwall of connector and housing again.

Improve, described heat(ing) coil and rotating shaft are fixed with each other for welding again.

Improve, described dish leaf and heat(ing) coil are for being welded to each other or by bolt or be threaded fixed with each other again.

Improve, described drying device is the horizontal type drying device again, and described drainage arrangement is draining pump, and described vacuum means is set to vacuum pumping pump.

Compared with prior art, the utility model has the advantage of: adopt continuous vacuum dryer also to include cooling device and vacuum extractor, the inner chamber of described housing is connected with the air inlet of condenser in cooling device by pipeline, and the gas outlet of described condenser is connected with the exhaust tube of vacuum extractor, and described condenser bottom is provided with and waste gas condensate water can be discharged extraneous drainage arrangement.This design can realize that in temperature be 70 ℃ of left and right, pressure is-housing of 0.07MPa in the continous vacuum low temperature drying, effectively avoided material that sharply protein oxidation or sex change phenomenon occurs in the hyperthermia drying process, thereby every nutrition of raising finished product and comprehensive, there is evaporating temperature low, heat energy loss reduces, and energy-saving effect is obvious; And because equipment is in air-tight state, outside air can't enter drying equipment, has reduced the treating capacity of waste gas, greatly reduces waste gas environmental protection treatment cost.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the stereogram of Fig. 1 drying device;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is in Fig. 1 between heat(ing) coil and rotating shaft and the structure chart between the dish leaf;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is I section enlarged drawing in Fig. 1.

The specific embodiment

Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.

As extremely shown in Figure 6 in Fig. 1, the continuous vacuum dryer of the present embodiment, include drying device, described drying device includes the rotating shaft 2 that housing 1, hollow can pass into steam, steam inlet in described rotating shaft 2 is arranged on an end of rotating shaft 2, and the outlet through being converted into steam condensate (SC) and remaining steam after heat release is positioned on the other end of rotating shaft 2.Described rotating shaft 2 is stretched out outer the stretching out of housing 1 and is located to be provided with the seal that can make housing 1 inner chamber keep sealing state.be provided with charging aperture 10 and discharging opening 13 on housing 1, described rotating shaft 2 can be arranged in housing 1 rotationally, and an end of described rotating shaft 2 stretches out housing 1 output shaft outer and motor 3 and links, be provided with by annular pipeloop around the heat(ing) coil 4 that forms in described rotating shaft 2, described heat(ing) coil 4 for spaced and parallel be arranged in rotating shaft 2, the inner chamber of described heat(ing) coil 4 respectively with the intracavity inter-connection of rotating shaft 2, can promote the dish leaf 41 that material is made displacement being provided with on the outer peripheral face of described heat(ing) coil 4 when heat(ing) coil 4 rotates with rotating shaft 2, it is characterized in that: described continuous vacuum dryer also includes cooling device and vacuum extractor, the inner chamber of described housing 1 is connected with the air inlet 51 of condenser 5 in cooling device by pipeline, and the waste gas gas outlet 52 of described condenser 5 is connected with the exhaust tube of vacuum extractor, described condenser 5 bottoms are provided with and waste gas condensate water can be discharged extraneous drainage arrangement.Described cooling device includes cooling tower 6 and condenser 5, the condenser pipe 53 of described condenser 5 for being set together with vertically placing side by side, the cooling liquid inlet 54 of described condenser 5 is arranged at the bottom of condenser 5, described cooling liquid inlet 54 is connected with the cooling liquid outlet 61 of cooling tower 6 through coolant pump 55 by pipeline, and the cooled liquid outlet 56 of described condenser 5 is positioned at the top of condenser 5, and described liquid outlet 56 is connected with the import 62 of cooling tower 6 by pipeline.Be provided with the air inducing case 11 of housing 1 inner chamber gas at the top of stating housing 1, the top of described air inducing case 11 is provided with gas outlet 12, and this gas outlet 12 is connected with extraneous sealing with the air inlet 51 of condenser 5 by pipeline.Be provided with block 7 for material that barrier is dried by the fire stating housing 1 compartment of terrain, inner chamber top, the bottom of described each block 7 extend in space between corresponding two heat(ing) coils 4.This block 7 fixes by the inwall of connector and housing 1.Heat(ing) coil 4 is fixed with each other for welding with rotating shaft 2, and dish leaf 41 and heat(ing) coil 4 are for being welded to each other or by bolt or be threaded fixed with each other.Above-mentioned drying device is the horizontal type drying device, and described drainage arrangement is draining pump 57, and described vacuum means is set to vacuum pumping pump 8.

Below in conjunction with embodiment, the utility model and operation principle are described in further detail.

Drying machine is that the shell by the carrying vapour interlayer of an accumbency (namely refers to housing 1, as follows) and one consist of with steam-heated rotating shaft, be welded with the heating disk in rotating shaft and (namely refer to heat(ing) coil 4, as follows), when work, when steam enters the drying machine rotating shaft and be assigned to equably every a slice heating disk inner, thereby the material to the disk outside heats, evaporate the excessive moisture of material, steam in main shaft is converted into steam condensate (SC) after heat release, outside the other end discharge machine of rotating shaft.Rotation along with rotating shaft, material is under the stirring and heat effect of disk, the gas that is evaporated by vacuum extractor constantly from the drying machine top through condenser and outside the discharge machine, the wheel blade of dried material on the heating disk (is graduated dial leaf 41, as follows) under impetus, outside the discharge end discharge machine of drying machine, reach the purpose of continuous operation, its dry materials evaporating temperature is controlled at 70 ℃ of left and right.

Drying machine mainly is comprised of housing, main shaft (namely referring to rotating shaft 2), transmission device and steel structure base four parts:

(1). shell is cylindrical tube, utilizes two legs to be placed horizontally on steel structure base.Shell attaches steam jacket, can effectively heat the material in cylindrical shell, improves drying rate, also can reduce well the extent of corrosion of sheet material in cylindrical shell simultaneously.At the cylindrical shell top, an air inducing flat-top is arranged, passage as the moisture evaporation, the waste gas of all evapn enters the air inducing square chest of placing on flat-top and (namely guides bellows 11, as follows) after, concentrate and (namely point out gas port by the waste gas outlet, as follows) be connected with induced duct 14, enter next step operation.

Observe for convenience the fish meal dry run and dryer inner is carried out necessary cleaning maintenance work, in top-side, the observation window that several can be dismantled flexibly is installed, all utilize quick chuck to be fixed, folding is very convenient.

Shell (namely referring to housing 1) two ends are fastening by the end cap of sealing, but are welded with the supporting plane of fixed placement main shaft (namely referring to rotating shaft 2, as follows) bearing block on end cap.

Cylinder body bottom has several clean-up ports, in case drying machine failure and special occurs and can't rotate, can answer the emergency opening clean-up port, emits the material in cylindrical shell, the outlet of cleaning cylinder body bottom buildup when also can be used as at ordinary times drying machine and stopping production.

In the inner barrel length range, it (is finger stop plate 7 with the powder blocking plate that heating disk quantity equates that one row is installed, as follows), vertically be fixed in the center position of two heating, in order to prevent that material from moving with the heating disk, play self-cleaning effect, and can in time remove the fish meal cover layer of viscous on axle and heating disc surfaces, make the main shaft heating surface keep good heat-transfer capability.

Charging aperture is positioned at the cylindrical shell top at drying machine power end place, and discharging opening is installed at the scene, decides according to drying machine and conveying worm cohesive position.

Outer wall parcel one deck of steam jacket has the insulation material of heat-blocking action, can prevent dissipation of heat, reduces energy consumption with this.

(2). main shaft (namely referring to rotating shaft 2, as follows) is as the main heat transfer component of oven dry fish meal, and its performance will directly determine the drying capacity situation of drying machine, be the main core component of drying machine.

The spindle tube of drying machine adopts the high-quality seamless steel pipe, must guarantee its shearing force that can carry, twisting resistance and thermal stress.Be welded with some heating disks on spindle tube, heating disc structure form is that a circle is dull and stereotyped, the semi arch coil pipe that is the helix layout that is coated with respectively sealing and communicates in the both sides of circle flat board, and steam and condensed water flow in the coil pipe of this flat board both sides respectively, make the heating disk keep constant high temperature.The steam-distributing pipe of placing in spindle tube can be delivered to the live steam that enters by swivel joint from the main shaft feed end the steam pipe coil of every heating disk equably.The every condensed water that produces of heating disk is outside draining system discharge machine.Be carry out of the fish meal in the assurance cylindrical shell along with drying course, the fish meal that moisture is reduced gradually is to be completed by the wheel blade on every heating disk from the work that feed end moves to discharge end.The wheel blade that uses has three kinds of forms, namely pushes away powder plate, the plate of falling the powder and fries the powder plate, and the effect that pushes away the powder plate is the rotation along with the heating disk, produce the active force of fish meal being pushed to discharge end, and the plate of falling the powder is on the contrary, fries the powder plate and only plays the effect of stirring fish meal.For so the drying rate of drying machine and fish meal translational speed are complementary, mutual arrangement position and the quantity of three kinds of wheel blades will suitably be adjusted according to actual conditions, just can make the material level of fish meal in the drying machine cylindrical shell be in all the time suitable position.

There is a pair of bearing with automatic aligning performance at the two ends of main shaft, utilize bearing block to be positioned on the supporting plane of end cap, and motion place of main shaft and end face adopts packing as airtight and watertight padding, are compressed by seal cover, can prevent well that the fish meal in cylindrical shell from leaking.

(3). the transmission device of drying machine is to be rotated by clutch metal v-belt driving-belt moving gear reductor by motor, and gear reduction unit directly is enclosed within on the spindle nose of main shaft, realize that thus turning of main shaft revolve (be in zero load or fully loaded duty no matter the effect of clutch is exactly drying machine, can make main shaft complete smoothly start-up course).Splash system lubrication is partly adopted in gear drive in gear reduction box, and the adjusting center bearing in the bearing block at main shaft two ends adopts the regular replenishment grease lubrication.

(4). drying machine adopts steel structure base, install, displacement is very convenient, and to be furnished with the annex such as operating platform is that operation, maintenance and maintenance work are provided convenience.

(5). the pipe-line system of drying machine is divided into two large classes: 1.. enter the steam pipework of main shaft and shell interlayer heating chamber; 2.. the reclaim line of the steam condensate (SC) that main shaft and interlayer heating chamber produce after heat exchange.

Claims

1. continuous vacuum dryer, include drying device, described drying device includes housing (1), hollow can pass into the rotating shaft (2) of steam, be provided with charging aperture (10) and discharging opening (13) on housing (1), described rotating shaft (2) can be arranged in housing (1) rotationally, and an end of described rotating shaft (2) stretches out housing (1) output shaft outer and motor (3) and links, be provided with by annular pipeloop around the heat(ing) coil that forms (4) in described rotating shaft (2), described heat(ing) coil (4) for spaced and parallel be arranged in rotating shaft (2), the inner chamber of described heat(ing) coil (4) respectively with the intracavity inter-connection of rotating shaft (2), can promote the dish leaf (41) that material is made displacement being provided with on the outer peripheral face of described heat(ing) coil (4) when heat(ing) coil (4) rotates with rotating shaft (2), it is characterized in that: described continuous vacuum dryer also includes cooling device and vacuum extractor, the inner chamber of described housing (1) is connected with the air inlet (51) of condenser (5) in cooling device by pipeline, and the waste gas gas outlet (52) of described condenser (5) is connected with the exhaust tube of vacuum extractor, described condenser (5) bottom is provided with and waste gas condensate water can be discharged extraneous drainage arrangement.

2. continuous vacuum dryer according to claim 1, it is characterized in that: described cooling device includes cooling tower (6) and condenser (5), the condenser pipe (53) of described condenser (5) for being set together with vertically placing side by side, the cooling liquid inlet (54) of described condenser (5) is arranged at the bottom of condenser (5), described cooling liquid inlet (54) is connected with the cooling liquid outlet (61) of cooling tower (6) through coolant pump (55) by pipeline, and the cooled liquid outlet of described condenser (5) (56) is positioned at the top of condenser (5), and described liquid outlet (56) is connected with the import (62) of cooling tower (6) by pipeline.

3. continuous vacuum dryer according to claim 1 and 2, it is characterized in that: the steam inlet in described rotating shaft (2) is arranged on an end of rotating shaft (2), and the outlet through being converted into steam condensate (SC) and remaining steam after heat release is positioned on the other end of rotating shaft (2).

4. continuous vacuum dryer according to claim 1 and 2 is characterized in that: described rotating shaft (2) is stretched out housing (1) outer stretching out place and is provided with the seal that can make housing (1) inner chamber keep sealing state.

5. continuous vacuum dryer according to claim 1 and 2, it is characterized in that: the top of described housing (1) is provided with the air inducing case (11) of housing (1) inner chamber gas, the top of described air inducing case (11) is provided with gas outlet (12), and this gas outlet (12) are connected with extraneous sealing with the air inlet (51) of condenser (5) by pipeline.

6. continuous vacuum dryer according to claim 1 and 2, it is characterized in that: compartment of terrain, described housing (1) inner chamber top is provided with the block (7) for material that barrier is dried by the fire, and the bottom of described each block (7) extend in space between corresponding two heat(ing) coils (4).

7. continuous vacuum dryer according to claim 6, it is characterized in that: described block (7) fixes by the inwall of connector and housing (1).

8. continuous vacuum dryer according to claim 1 and 2 is characterized in that: described heat(ing) coil (4) is fixed with each other for welding with rotating shaft (2).

9. continuous vacuum dryer according to claim 1 and 2 is characterized in that: described dish leaf (41) and heat(ing) coil (4) are for being welded to each other or by bolt or be threaded fixed with each other.

10. continuous vacuum dryer according to claim 1 and 2, it is characterized in that: described drying device is the horizontal type drying device, and described drainage arrangement is draining pump (57), and described vacuum means is set to vacuum pumping pump (8).