CN208223002U - A kind of pulsed defoaming vacuum drying oven - Google Patents

Abstract

The utility model discloses a kind of pulseds to defoam vacuum drying oven, it include: the frame with automatically-controlled door, baking oven is installed in frame, baking oven includes internal box and outer case, is fixedly mounted between outer case and frame by intersecting parallels reinforcing rib, and insulating layer is equipped between frame and outer case, collet is provided between internal box and outer case, cooling water tank, the inner containment shelf of internal box are installed, the side of shelf is equipped with pulse defoaming mechanism above outer case；The pulsed defoaming vacuum drying oven of the utility model design passes through defoaming mechanism and sensing element, the rate formed according to the variation of the moisture content of drying process, bubble, temperature, pressure etc. chronologically with intelligent gradient are set, and blistering and bubble increase the relevant duty parameter of institute.And when bubble reach baking pan on along when defoam immediately, be filled with nitrogen, inhibitory activity oxidation greatly improves rate of drying.

Description

A kind of pulsed defoaming vacuum drying oven

Technical field

The utility model belongs to vacuum drying oven technical field, and especially a kind of pulsed defoams vacuum drying oven.

Background technique

Vacuum oven is widely used in biochemistry, and chemical pharmaceutical, health care, agri-scientific research, environmental protection etc. are ground Study carefully application field, is used as that powder is dry, bakes and banks up with earth and the disinfection of all kinds of glass containers and sterilizing.Traditional vacuum oven is to dry The thermal conductivity of the heating of unwheeling shell and tube or disk heating, sending is a part of by the heat absorption of baking pan material, and another part is absorbed heat always by cabinet It is distributed to insulating layer, the temperature inside the box cannot get enough utilizations.Although the temperature of setting is to reach, evaporation rate is not Fastly, the humid air of vacuum pump extraction is few, therefore causes that the temperature inside the box is uneven, and dry materials are inconsistent, and drying time is long, This just virtually increases the energy consumption of user, cost, working hour expense and unpredictalbe expense.Some materials, in major part Medicine medicinal extract material, in thermal drivers, negative pressure, under the action of active oxidation, material will will form water vapo(u)r bubble, and constantly increase, water Steam bubble will overflow baking pan when increasing to the height of baking pan, and make irregular flowing in the case, overheat on baking pan wall, shelf Coking, so that drying can not continuously normal middle progress.When being under normal conditions that water vapo(u)r bubble soon overflows baking pan by artificially observation Manual pressure relief reduces water vapo(u)r bubble height and is further continued for drying, but cannot root smelting feed liquid the phenomenon that overflowing baking pan, and not due to operating condition Continuously, cause rate of drying low.

Utility model content

The technical problem to be solved by the utility model is to some materials, such as most of Chinese medical concrete material, drive in heat Dynamic, negative pressure, under the action of active oxidation, material will will form water vapo(u)r bubble, and constantly increase, and water vapo(u)r bubble increases to the height of baking pan Baking pan will be overflowed when spending, and makees irregular flowing in the case, form overheat coking in baking pan wall, shelf, the whole district to do It is dry continuously normally middle to carry out.It is under normal conditions that manual pressure relief reduces when water vapo(u)r bubble soon overflows baking pan by artificially observation Water vapo(u)r bubble height is further continued for drying, but cannot root smelting feed liquid the phenomenon that overflowing baking pan, and due to discontinuous, the drying led of operating condition Rate is low.In order to overcome the shortcomings of the prior art, a kind of pulsed defoaming vacuum drying oven, the pulsed of the utility model design are provided Defoam vacuum drying oven by defoaming mechanism and sensing element, according to the rate that the variation of the moisture content of drying process, bubble are formed, on time Temperature, pressure are set to sequence and intelligent gradient, and blistering and bubble increase the relevant duty parameter of institute.And it is dried when bubble reaches On disk along when defoam immediately, be filled with nitrogen, inhibitory activity oxidation greatly improves rate of drying.

In order to solve the above technical problems, the utility model provides a kind of pulsed defoaming vacuum drying oven, comprising: with certainly The frame of door is moved, baking oven is installed in frame, baking oven includes internal box and outer case, passes through intersecting parallels between outer case and frame Reinforcing rib is fixedly mounted, and insulating layer is equipped between frame and outer case, collet, outer case are provided between internal box and outer case Top is equipped with cooling water tank, and collet water outlet and vacuum orifice, vacuum orifice and interior case are additionally provided on the top plate of outer case Body connection, outer case lower section are equipped with collet water inlet and sewage draining exit, and collet water outlet and collet water inlet are connected to collet, Sewage draining exit is connected to internal box, is equipped with shelf water outlet and shelf water inlet on the side wall of outer case side, internal box it is interior Portion accommodates shelf, and the side of shelf is equipped with pulse defoaming mechanism, and shelf water outlet and shelf water inlet are connected to shelf, outside Pressure relief opening is installed, pressure relief opening is connected to internal box, and the top outer of outer case is equipped with vacuum on the side wall of the cabinet other side Pump, vacuum pump connect vacuum orifice.

The technical solution that the utility model further limits is: pulse defoaming mechanism include for nitrogen valve and sensing element, Nitrogen, the rate that sensing element is used to detect the moisture content variation of drying process and bubble is formed are discharged to shelf for nitrogen valve.

Further, thermal insulation material is filled in insulating layer, thermal insulation material is aluminosilicate refractory fiber cotton.

Further, shelf bottom is equipped with wheel.

Further, the top and bottom of internal box are half elliptic, adjacent both side plate smooth transition.

Further, in the scooter of the baking pan top of shelf top layer setting half elliptic, scooter is mobilizable.

Further, every layer of shelf is the pipeline of arrangement, and every layer of pipeline is equipped with the track welded with angle steel, on track Accommodate baking pan.

Further, automatically-controlled door uses steam-operating automatically-controlled door, and door sealing uses high temperature resistant gas-flow closure circle.

Further, internal box bottom collar extension is welded with the water blocking that one of height is 20-30mm at the position of automatically-controlled door Item.

The beneficial effects of the utility model are:

The pulsed defoaming vacuum drying oven of the utility model design will be in by dry material to carry out under vacuum condition Heat drying carries out pumping dehumidifier using vacuum pump, and top vacuumizes simultaneously with bottom, makes to form vacuum state in operating room, The boiling point for reducing water, accelerates rate of drying, can obtain higher rate of drying at a lower temperature, and heat utilization is abundant, temperature Degree uniformity is guaranteed.It is mixed into the drying process without any impurity, belongs to permanent vacuum drying, therefore will not be to dried object The body of material damages, and meets " GMP " requirement.

Meanwhile water (H₂O) generally just reach boiling point at 100 DEG C under normal pressure, and under certain negative pressure state, about 30 DEG C or lower temperature under can reach boiling point.In the drying process of material under thermal drivers, water hydrone after reaching boiling point It is evaporated in air and forms humid air, then taken away humid air by mechanism, in cycles, to complete evaporation drying Process.

This pulsed defoams vacuum oven by defoaming mechanism and sensing element, changed according to the moisture content of drying process, Temperature, pressure chronologically with intelligent gradient is arranged in the rate that bubble is formed, and blistering and bubble increase the relevant operating condition of institute Parameter.And when bubble reach baking pan on along when defoam immediately, be filled with nitrogen, inhibitory activity oxidation.Greatly improve drying Rate.

The utility model product the temperature inside the box is uniform, and dry materials are consistent；Brokenly bubble evaporation is fast, and drying time is short；It will not be right The inherent composition of dried object product causes damages, and will not damage to the body of dried material, is suitable for dry thermal sensitivity object Material.

Detailed description of the invention

Fig. 1 is the main sectional view of the utility model；

Fig. 2 is the side sectional view of the utility model；

Fig. 3 is the top view of the utility model；

Wherein, 1- frame, 2- shelf water inlet, 3- shelf water outlet, 4- collet, 5- collet water outlet, 6- internal box, 7- Vacuum orifice, 8- shelf, 9- pulse defoam mechanism, 10- cooling water tank, 11- outer case, 12- pressure relief opening, 13- wheel, 14- row Dirty mouth, 15- collet water inlet, 16- automatically-controlled door, 17- vacuum pump, 18- insulating layer.

Specific embodiment

Embodiment 1

The present embodiment provides a kind of pulseds to defoam vacuum drying oven, as shown in Figure 1, comprising: the frame with automatically-controlled door 16 1, baking oven is installed in frame 1, baking oven includes internal box 6 and outer case 11, is added between outer case 11 and frame 1 by intersecting parallels Strengthening tendons are fixedly mounted, and insulating layer 18 is equipped between frame 1 and outer case 11, is provided with collet between internal box 6 and outer case 11 4, cooling water tank 10 is installed above outer case 11, collet water outlet 5 and vacuum orifice are additionally provided on the top plate of outer case 11 7, vacuum orifice 7 is connected to internal box 6, and collet water inlet 15 and sewage draining exit 14, collet water outlet 5 are equipped with below outer case 11 It is connected to collet 4 with collet water inlet 15, sewage draining exit 14 is connected to internal box 6, is equipped on the side wall of 11 side of outer case Shelf water outlet 3 and shelf water inlet 2, the inner containment shelf 8 of internal box 6, the side of shelf 8 are equipped with pulse defoaming mechanism 9, shelf water outlet 3 and shelf water inlet 2 are connected to shelf 8, are equipped with pressure relief opening 12 on the side wall of 11 other side of outer case, Pressure relief opening 12 is connected to internal box 6, and the top outer of outer case 11 is equipped with vacuum pump 17, and vacuum pump 17 connects vacuum orifice 7.

Aforementioned pulse defoaming mechanism 9 includes discharging nitrogen, sensing to shelf 8 for nitrogen valve for nitrogen valve and sensing element The rate that element is used to detect the moisture content variation of drying process and bubble is formed.Thermal insulation material is filled in aforementioned insulating layer 18, is protected Adiabator is aluminosilicate refractory fiber cotton.Aforementioned 8 bottom of shelf is equipped with wheel 13.The top and bottom of aforementioned internal box 6 are Half elliptic, adjacent both side plate smooth transition.It is smooth in the scooter of the baking pan top of 8 top layer of shelf setting half elliptic Plate is mobilizable.Every layer of aforementioned shelf 8 is equipped with track, and track is the pipeline of arrangement, accommodates baking pan on track.It is aforementioned automatic Door 16 uses steam-operating automatically-controlled door, and door sealing uses high temperature resistant gas-flow closure circle.Aforementioned 6 bottom collar extension of internal box is by automatically-controlled door 16 The water bar that one of height is 20-30mm is welded at position.

Vacuum chamber outer surface plate is 304 stainless steel plates, and plate thickness δ 2.0mm is laminating adhesive matt plate, and appearance rivet welding shapes, Surfacing is without soldering, scratch phenomenon.6 inner surface plate of internal box is 304 stainless steel plates, plate thickness δ 6mm, and is polished, at polishing Reason.Collet 4 is 304 stainless steels, and plate thickness δ 4.0mm is close to be welded into shape.And hot water heating, pressure 0.3-0.4Mpa, in internal box 6 Plate heat transfer is fast, and increases the supplement of 6 temperature of internal box, is sufficiently ensured space temperature in internal box 6.Equipped with object Thermally equivalent, shelf 8 are tubulation heating to the baking pan surrounding of material simultaneously, and heat hydraulic pressure 0.3-0.4Mpa adds drying materials area Greatly, dry materials rate is promoted to speed.Drying is powerful, and drying time shortens, and solves traditional vacuum oven shelf car team Tubular type heating or disk heating, by baking pan material heat absorption a part, another part is absorbed heat by cabinet and dissipates to insulating layer the thermal conductivity of sending Hair, the temperature inside the box cannot get enough utilizations.Although the temperature of setting is to reach, evaporation rate is unhappy, vacuum pumping Humid air out is few, therefore causes that the temperature inside the box is uneven, and dry materials are inconsistent, and drying time is long, and user feedback is long Have up to 20 several hours or even 30 several hours had, or even some also having there are also more than 40 a hours.This is just virtually increased Energy consumption, cost, working hour expense and the unpredictalbe expense of user, reduces the profit of sale of finished goods.The automatic control of medicinal extract defoaming It makes, vacuum, temperature timesharing sequence section are carried out from rough vacuum, low temperature to normal work vacuum degree and temperature in work.It is divided into four A gradient.According to medicinal extract property settings every gradient working time, in addition vacuum degree, temperature install defoaming device additional, are vented inflated with nitrogen, Heating emptying filtering, band temperature enter in internal box 6 together with nitrogen, keep temperature in internal box 6 unaffected.When medicinal extract foams When, breaking bubble apparatus obtains signal and immediately treats, and moisture evaporation is fast when handling repeatedly, and drying time greatly shortens.Also it solves Shelf 8 cleans difficult a great problem, and saves labour and time, is increased by drying batch.Increase it is unpredictalbe very Big economic benefit.Vacuum oven front door, which is opened, uses steam-operating automatically-controlled door, and automatic control reduces labor intensity and time, door Sealing uses heatproof software gas-flow closure, guarantees that vacuum does not leak.Sewage draining exit 14, the row of condensed water is arranged in bottom in internal box 6 It puts, rear arranging device front-seat using automatically controlling does not influence vacuum normal work, solve bottom seeping phenomenon in internal box 6, really Protect the drying of 6 bottom of internal box and anhydrous sprinkling ground of opening the door.Vacuum system: in order to guarantee the work of vacuum pump normally, without Load is not heated, and the cooling of vacuum pump installs cooling water tank 10 additional, and 20 DEG C of 10 minimum temperature of cooling water tank is arranged in circulating cooling, from Dynamic control discharge water and moisturizing are always ensured that water tank water temperature at 20 DEG C, protects vacuum pump, guarantee steam extraction power and drying time One of fast advantage.Thickness 100mm is kept the temperature, thermal insulation material fills aluminosilicate refractory fiber cotton, liner reinforcing rib, at intersecting parallels system Make and intensity is high, it is indeformable in vacuum work.6 inner top of internal box is half elliptic production, and adjacent two plate is arc transition, Temperature is set in cabinet to circulate when heating, no barrier, uniformly, to change at the top of former square vacuum drying oven one layer equipped with material Baking pan is not easy the defect dried, meanwhile, the steam pearl convenient for generating when drying materials flows into cabinet central bottom, warp along two sides Bottom blow-down mouth 14 is extracted out with bonding in vacuum pipeline by vacuum pump, and drying regime is remained in case.When vacuumizing, to prevent from stopping It returns valve control failure and generates return water, influence the quality and efficiency and drying time of dried material, in top layer when production Baking pan top (at the shelf 80mm of top) place half elliptic stainless steel slip plane (to be movable), make vacuum returnline or Evaporative condenser droplet is not easy to instill in the baking pan equipped with material, improves the quality and speed of dried material.Baking pan and shelf 8 it Between there are 10mm spacing distance, every layer of top of shelf 8 is fabricated to track by angle steel, baking pan is put in orbit, to change In the drying process, the contact position of baking pan bottom and shelf 8 is easy to appear the phenomenon that material is by adustion to material.In internal box 6 The bottom plate collar extension water bar of one of height of welding between 20-30mm at door, after automatically-controlled door 16 is opened, in internal box 6 before bottom Row, the halfway ponding of heel row are not easy to flow out, and ponding is made to bypass pressure discharge from sewage draining exit, to ensure that ground in operation room The dry cleansing health in face.Bottom device 4 stainless steel wheels 13 of shelf 8, can in orbit activity drag freely, shelf into The mouth of a river 2 and shelf water outlet 3 and cabinet junction are respectively arranged with quick coupling, easy to disassemble, pull out cleaning.Place the shelf of baking pan The number of plies is 8 layers, is from top to bottom the production of shell and tube layer pipe, every layer of placement baking pan 4, hot water heating low in and high out, interlayer heating It is also low in and high out.Per car sabot number 32.Bottom is also half elliptic production in internal box 6, makes material in the drying process The droplet of generation thoroughly flows to bottom middle part, is taken out with front-seat, heel row and bonding in vacuum pipeline by vacuum through bottom blow-down mouth 14 Out.16 inner panel of automatically-controlled door is equipped with circular flowing water frid, 16 inner plate surfaces steam pearl fair current tank plate stream of automatically-controlled door at mouth on the lower Bottom in cartonning makes baking oven opening ensure that no water sprinkling ground behind the door, it is ensured that ground surface is in dry cleansing shape always State.A stainless steel traction transition trolley is configured, docks with easy access, easy cleaning convenient for shelf, it is time saving, laborsaving, it reduces Labor intensity improves safety coefficient.Separately one stainless steel drag hook of configuration after automatically-controlled door 16 is opened, dries convenient for innermost layer in case Disk easy access, it is easy to operate.The drying time of entire drying course is set to advance to 7-10 hour.Than conventional vacuum oven Drying time shortens to a hour more than more than ten hour or even 20, greatly reduces in the working time and production of worker Operating cost.More increase the unpredictalbe economic benefit of enterprise.

Embodiment 2

The present embodiment provides a kind of application methods of pulsed defoaming vacuum drying oven, comprise the following specific steps that:

(1) all pipelines are connected, power supply is opened, check whether pulsed defoaming vacuum drying oven institute is functional normal；

(2) material to be dried is placed on shelf 8, shelf 8 is pushed into internal box 6, close automatically-controlled door 16；

(3) it heat drying: opens vacuum pump 17 and is vacuumized internal box 6 by vacuum orifice 7, open simultaneously hot water valve Door injects hot water into shelf 8 and collet 4, dry by vacuum-tonifying Qi-vacuum-tonifying Qi circulating-heating；

(4) starting impulse defoams mechanism, the speed that sensing element is used to detect the moisture content variation of drying process and bubble is formed Rate, temperature, pressure etc. and blistering chronologically with intelligent gradient are arranged automatically for pulsed defoaming vacuum drying oven and bubble increases institute Relevant duty parameter；When bubble reach baking pan on along when, for nitrogen valve to shelf 8 discharge nitrogen defoamed, inhibit live Property oxidation；

(5) after the completion of dry materials, the hot-water heating system heated to collet 4 and shelf 8 is closed, original hot water is released, is opened Running water valve cools down material by being cooled down to collet 4 and shelf 8, after the completion of cooling, closes running water valve Door；

(6) dry materials are completed, and close power supply, take out material.

Some materials, such as most of Chinese medical concrete material, in thermal drivers, negative pressure, under the action of active oxidation, material will Water vapo(u)r bubble is formed, and is constantly increased, baking pan will be overflowed when water vapo(u)r bubble increases to the height of baking pan, and make in internal box 6 Irregular flowing overheats coking on baking pan wall, shelf 8, so that drying can not continuously normal middle progress.Lead under normal conditions Artificial observation is crossed, i.e., manual pressure relief reduces water vapo(u)r bubble height and is further continued for drying when water vapo(u)r bubble soon overflows baking pan, but cannot root smelting Feed liquid overflows the phenomenon that baking pan, and discontinuous due to operating condition, causes rate of drying low.

Pulsed defoams vacuum oven and defoams mechanism 9 by pulse, is formed according to the variation of the moisture of drying process, bubble Rate, temperature, pressure chronologically with intelligent gradient be set, and blistering and bubble increase the relevant duty parameter of institute.And When bubble reach baking pan on along when defoam immediately, be filled with nitrogen, inhibitory activity oxidation.Greatly improve rate of drying.This Equipment writes the process that user program runs equipment using man-machine interface PLC and is set and monitored the people, it can be achieved that friendly Machine dialogue, and it is equipped with reliable supply station, to guarantee that each valve member and pneumatic apparatus reliably work, feature is as follows: drying After dry, the heating system of shelf 8 in the heating system and internal box 6 of collet 4 can be automatically closed, it is cold to automatically open originally water leg But the valve cooling to material with shelf 8 in internal box 6, if tap water pressure can be controlled on the basis of 0.4Mpa with valve, Available pipe pump control when low pressure.Using the hot water in tap water displacement collet 4, material is made to cool down, drop can be set in a program Temperature terminates program after reaching.Settable vacuum-tonifying Qi-the vacuum of drying stage-tonifying Qi circulation, can to help moisture to be discharged Autonomous setting intercycle time and number.Each synergic system main valve needs manual switch, drying process to knot when except switching on and shutting down Shu Junwei Automatic Control.Cooling water tank 10 exchanges heat to drinking water using steam pipe coil, temperature automatic control, and monitors folder The temperature related parametric of set 4, internal box 6 and shelf 8.

Above embodiments are only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality Within the scope of novel protected.

Claims (9)

1. a kind of pulsed defoams vacuum drying oven characterized by comprising have the frame (1) of automatically-controlled door (16), the frame (1) baking oven is installed in, the baking oven includes internal box (6) and outer case (11), between the outer case (11) and frame (1) It is fixedly mounted by intersecting parallels reinforcing rib, is equipped with insulating layer (18) between the frame (1) and outer case (11), the internal box (6) it is provided between outer case (11) collet (4), is equipped with cooling water tank (10) above the outer case (11), it is described outer It is additionally provided with collet water outlet (5) and vacuum orifice (7) on the top plate of cabinet (11), the vacuum orifice (7) and internal box (6) Connection, outer case (11) lower section are equipped with collet water inlet (15) and sewage draining exit (14), the collet water outlet (5) and folder Set water inlet (15) is connected to collet (4), and the sewage draining exit (14) is connected to internal box (6), outer case (11) side Side wall on shelf water outlet (3) and shelf water inlet (2), the inner containment shelf (8) of the internal box (6), institute are installed The side for stating shelf (8) is equipped with pulse defoaming mechanism (9), and the shelf water outlet (3) and shelf water inlet (2) are and shelf (8) it is connected to, is equipped with pressure relief opening (12) on the side wall of outer case (11) other side, the pressure relief opening (12) and internal box (6) it is connected to, the top outer of the outer case (11) is equipped with vacuum pump (17), and the vacuum pump (17) connects vacuum orifice (7).

2. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that pulse defoaming mechanism (9) packet It includes for nitrogen valve and sensing element, described to discharge nitrogen to shelf (8) for nitrogen valve, the sensing element is dried for detecting The rate that the moisture content variation of journey and bubble are formed.

3. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that filling is protected in the insulating layer (18) Adiabator, the thermal insulation material are aluminosilicate refractory fiber cotton.

4. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that shelf (8) bottom is equipped with Wheel (13).

5. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that the top of the internal box (6) and Bottom is half elliptic, adjacent both side plate smooth transition.

6. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that in the baking pan of shelf (8) top layer The scooter of half elliptic is arranged in top, and the scooter is mobilizable.

7. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that every layer of the shelf (8) is row The pipeline of column, every layer of pipeline are equipped with the track welded with angle steel, accommodate baking pan on track.

8. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that the automatically-controlled door (16) uses steam-operating Automatically-controlled door, door sealing use high temperature resistant gas-flow closure circle.

9. pulsed according to claim 1 defoams vacuum drying oven, which is characterized in that internal box (6) bottom collar extension The water bar that one of height is 20-30mm is welded at the position of automatically-controlled door (16).