CN101957127A - Vacuum drying equipment - Google Patents
Vacuum drying equipment Download PDFInfo
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- CN101957127A CN101957127A CN 201010271537 CN201010271537A CN101957127A CN 101957127 A CN101957127 A CN 101957127A CN 201010271537 CN201010271537 CN 201010271537 CN 201010271537 A CN201010271537 A CN 201010271537A CN 101957127 A CN101957127 A CN 101957127A
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Abstract
The invention relates to vacuum drying equipment. The vacuum drying equipment is provided with a sealed box body, a vacuum pump and an electric motor for driving the vacuum pump, wherein the box body is provided with an open seal door; a heating device is arranged in the box body; and the vacuum pump is hermetically connected with an exhaust port of the box body through an exhaust valve and an exhaust pipe. The vacuum drying equipment is characterized by being also provided with an air circulation system, a gas supplementing device and a vacuum breaking device, wherein the air circulation system is provided with an air supply and exhaust device; and the air exhaust end of the air supply and exhaust device is hermetically connected with an air outlet of the box body through an air circulation valve and an air outlet pipe, and the other end of the air supply and exhaust device is hermetically connected with an air inlet of the box body through an air inlet pipe and an air inlet valve. A vacuum drying method using the drying equipment comprises a step of drying by using the air circulation system. The equipment is provided with the air circulation system, so heat energy in the sealed box body can be uniformly diffused during drying, and an object to be dried is integrally and uniformly heated; therefore, drying efficiency is improved, the effects of saving energy and time are achieved, and the object to be dried can be prevented from being damaged due to non-uniform heating.
Description
Technical field
The invention relates to a kind of drying equipment and drying means, particularly a kind of vacuum dryer and vacuum drying method.
Background technology
In the production process of electronics spare part wait dry goods, often all can so that guarantee the cleannes of described article to be dried, and then guarantee article to be dried accuracy and sensitivity in use through cleaning and dry production operation.
In the prior art, common drying equipment all adopts the dry processing mode of baking to treat dry goods to carry out drying, this drying equipment generally all has a casing and is used to deposit article to be dried, and adopt electrical heating or vapor heated mode to improve the interior air themperature (generally more than 70 ℃) of casing, the device of depositing in the casing is carried out high-temperature baking, and then the water evaporates of adhering on the article to be dried is fallen.But this class equipment for drying has following shortcoming, because heating-up temperature is very high, need a large amount of energy, and when having the article to be dried that non-high-temperature resistant material such as plastic cement constitutes in processing, because of this class material baking through can't stand high temperature deforms or rotten, influence the performance and the quality of article, have again, therefore also can cause article to be dried to deform because of the inequality of being heated because this kind equipment can not be delivered to heat each article to be dried equably.
Need be heated to the very shortcoming of high-temperature (generally more than 70 ℃) in order to improve tradition baking drying equipment, and reach better drying effect, industry has been introduced vacuum dryer, vacuum dryer has an airtight casing, article to be dried are placed in the casing, and airtight casing is evacuated, thereby, make the moisture content that is attached on the article to be dried evaporate volatilization at a lower temperature and dry by reducing the boiling point that pressure in the casing reduces water by vavuum pump.Adopt vacuum dryer to treat dry goods and carry out drying and can make article to be dried avoid high-temperature baking, and then reach drying effect preferably.But in traditional vacuum drying method, because the thermal energy conduction non-uniform phenomenon can appear in low density gas under vacuum, thereby it is discontinuous that article temperature to be dried is risen, and therefore the uneven phenomenon that occurs being heated also can cause article to be dried to deform because of the inequality of being heated.
Summary of the invention
The invention provides a kind of vacuum dryer, it has the casing of sealing, vavuum pump and driving vacuum pump motor, casing is provided with the hermatic door of unlatching, its inside is provided with heater, vavuum pump is tightly connected with the bleeding point of casing mutually by evacuating valve and exhaust tube, it is characterized in that, this vacuum dryer also has air circulation system, gas make-up device and vacuum breaker device, described air circulation system has air exhausting device, the air outlet of this air exhausting device is by the air circulation valve, the gas outlet of escape pipe and casing is tightly connected, and the other end of air exhausting device passes through air inlet pipe, air intake valve is tightly connected mutually with the air inlet of casing.
The present invention also provides a kind of vacuum drying method that uses above-mentioned vacuum dryer, mainly may further comprise the steps: (1) puts into casing rear enclosed casing with article to be dried;
(2) start the interior heater of casing;
(3) then open evacuating valve, this moment, vavuum pump was started working;
(4) reach under the specified pressure when casing, close evacuating valve and open the gas make-up valve, the gas make-up device is supplemented to casing with associated gas;
(5) close the vacuum breaker valve of gas make-up valve open vacuum breaker device;
(6) the vacuum breaker valve of closing the vacuum breaker device is opened the air circulation valve, starts air circulation;
(7) after the execution air circulation reaches special time, close air circulation system, close the air circulation valve;
(8) repeating step (3) is to (7), carry out specific rounds after, open casing and take out dry goods, finish drying process.
Because drying equipment of the present invention has air circulation system and when carrying out drying air circulation system temperature from top to bottom is consistent, and then article integral body to be dried is heated up continuously, thereby article to be dried that hot non-uniform phenomenon causes are whole to heat up discontinuously owing to low density gas is conducted when avoiding finishing drying operation under the perfect vacuum, and then avoids the damage of article to be dried.
Description of drawings
Fig. 1 is the structural representation according to the vacuum dryer of the embodiment of the invention.
Fig. 2 is the partial cutaway diagrammatic sketch of vacuum dryer shown in Figure 1.
Fig. 3 is after opening according to the air circulation system 3 of the drying equipment of the embodiment of the invention, the gas flow direction schematic diagram in the casing 1.
Fig. 4 is the workflow schematic diagram according to the drying equipment of the embodiment of the invention.
The specific embodiment
Clearer for what the purpose, technical solutions and advantages of the present invention were expressed, below in conjunction with accompanying drawing, the technical scheme of a preferred embodiment of the present invention is known intactly description.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.The present invention can also show as different forms, therefore the embodiment that is not limited in this explanation.Based on embodiments of the invention, all other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing the embodiment of the invention is elaborated.
Fig. 1 is the structural representation of the vacuum dryer of the embodiment of the invention, as shown in Figure 1, the vacuum dryer of the embodiment of the invention has casing 1, vavuum pump 2, driving vacuum pump motor (not shown), air circulation system 3, gas make-up device 6 and vacuum breaker device 7 compositions of depositing article to be dried.
Gas make-up device 6 is connected with gas make-up pipe 62 by gas make-up valve 61, and gas make-up pipe 62 is tightly connected mutually by the gas make-up mouth 15 on the casing 1.Gas make-up device 6 tops also are provided with gas input port 63, this gas input port 63 is provided with related valve, and ((not shown) imports associated gas with control in gas make-up device 6, being input in the gas make-up device 6 gas can select according to the character of the thing that is dried, and can be inert gas, nitrogen and air etc.In addition, gas make-up device 6 inside are provided with gas-heating apparatus (not shown) and are used for the gas of this device is heated, this gas-heating apparatus can be heating wire or electric hot plate, because it can adopt the structure of existing firing equipment, so this is not giving unnecessary details again.Because gas make-up valve 61 is opened moment, the impulsive force that gas make-up device 6 sends in casing 1 is stronger, damage article to be dried for fear of this impulsive force, so be provided with buffer unit 64 (specifically referring to Fig. 2) in casing, this buffer unit 64 is arranged on the instant impact that send in casing 1 with buffer gas supplementary device 6 gas make-up mouth 15 belows.
Fig. 2 is the partial cutaway diagrammatic sketch of vacuum dryer shown in Figure 1, in conjunction with Fig. 1 and Fig. 2 as can be known, above casing 1, also be provided with vacuum breaker device 7, vacuum breaker device 7 is tightly connected with casing 1 mutually by vacuum breaker valve 71, when vacuum breaker valve 71 is opened, gas in the vacuum breaker device 7 will enter in the casing 1 by vacuum breaker valve 7, thereby the atmospheric pressure in the casing 1 is raise.Also because vacuum breaker valve 7 is opened moment, gas moment in the vacuum breaker device 7 enters casing 1, the impulsive force that described gas sends in casing 1 is stronger, damage article to be dried for fear of this impulsive force, so be provided with buffer unit 72 in casing, it is arranged on moment is opened in vacuum breaker valve 7 belows with buffering vacuum breaker valve 7 impulsive force.This buffer unit 71 can effectively cushion the impulsive force of the moment of vacuum breaker valve 7 unlatchings.Vacuum breaker device 7 tops also are provided with gas input port 73, this gas input port 73 is provided with related valve, and ((not shown) imports associated gas with control in vacuum breaker device 7, being input in the vacuum breaker device 7 gas can also select according to the character of the thing that is dried, and can be inert gas, nitrogen and air etc.
As shown in Figure 2, casing 1 is provided with the heater of being made up of heating plate 16 and Homogeneouslly-radiating plate 17 in inside, described heating plate 16 and Homogeneouslly-radiating plate 17 are arranged on three sides of box house, promptly except that hermatic door 11 place sides were not provided with hot plate 16 and Homogeneouslly-radiating plate 17, other three sides were provided with above-mentioned heating plate 16 and Homogeneouslly-radiating plate 17.In order to improve the casing 1 inner speed that heats up, also can be provided with heating plate 16 and Homogeneouslly-radiating plate 17 at the inner surface of casing 1 bottom.Described heating plate 16 is made (as materials such as copper and aluminium) by metal material, and itself and external power source (not shown) electrically connect, after power supply is opened, and heating plate 16 heating work of can being correlated with.Described Homogeneouslly-radiating plate 17 is set in parallel in the outside of heating plate 16 with a determining deviation, a that is side setting of close article to be dried, Homogeneouslly-radiating plate 17 is also made by the good conductor of heat such as metal, its surface is provided with the louvre 171 of evenly arranging, because louvre 171 is arranged uniformly, so uniform heat distribution on the Homogeneouslly-radiating plate 17, the low phenomenon of the high local temperature of local temperature can not appear on the Homogeneouslly-radiating plate 17, evenly heat thereby can treat dry goods, and avoid article to be dried to a certain extent owing to the uneven distortion that causes of heating-up temperature by Homogeneouslly-radiating plate 17.
Be provided with baffle plate 18 in heating plate 16 and Homogeneouslly-radiating plate 17 belows, as shown in Figure 2, this baffle plate 18 is provided with at outstanding Homogeneouslly-radiating plate 17, make the article rack (not shown) of placing article to be dried can not touch Homogeneouslly-radiating plate 17, thereby avoid article to be dried directly to contact and cause article damage to be dried with Homogeneouslly-radiating plate 17.
Fig. 3 is after opening according to the air circulation system 3 of the drying equipment of the embodiment of the invention, the gas flow direction schematic diagram in the casing 1.As shown in Figure 3, when carrying out drying operation according to the drying equipment of the embodiment of the invention, after air circulation system 3 is opened, gas circulates from the bottom to top in the casing 1, the temperature of gas place of arrival is approximately identical with the temperature of gas itself, temperature from top to bottom is consistent, and then article to be dried (not shown) integral body is heated up continuously, thereby the article to be dried (not shown) that cause owing to low density gas heat conduction non-uniform phenomenon when avoiding under casing low pressure, carrying out drying operation whole heat up discontinuous.
Fig. 4 is the workflow schematic diagram according to the drying equipment of the embodiment of the invention, and is as shown in Figure 4, as follows according to the drying equipment workflow of the embodiment of the invention:
After execution of step 47, repeated execution of steps 41 is to step 47, and the thing to be dried (not shown) in casing 1 is by fully dry, and generally step 41 to 6-10 back thing to be dried of step 47 circulation (not shown) all can be by abundant drying.
For the gas that makes gas make-up device 6 charge into casing 1 has certain temperature, can when carrying out the 41st one, promptly open the gas-heating apparatus in the gas make-up device 6, can effectively quicken the operating efficiency of vacuum dryer like this.
According to the embodiment of the invention, the aforesaid operations flow process of drying equipment is finished by making in the automatic control of the dry controller (not shown) of drying equipment.
Because according to the embodiment of the invention, when heating plate 16 and Homogeneouslly-radiating plate 17 certain hour of having worked, thing to be dried (not shown) just is placed into casing 1, when vavuum pump 2 is in running order, the part moisture of thing to be dried (not shown) can under low pressure flash to steam, and extracted out, so in the process that vacuumizes, can effectively remove attached to the moisture content on the article to be dried (not shown) by vavuum pump 2.And after air circulation system 3 was started working, under the heating of heating plate 16, Homogeneouslly-radiating plate 17 and air, article to be dried (not shown) can be dried further.
Because according to the present invention, after air circulation system 3 is opened, gas circulates from the bottom to top in the casing 1, the temperature of gas place of arrival is approximately identical with the temperature of gas itself, temperature from top to bottom is consistent, and the atmospheric pressure in the casing 1 is in normal pressure or near the state of normal pressure, and then article to be dried (not shown) integral body is heated up continuously, thereby the whole intensification of article to be dried (not shown) that causes owing to low density gas heat conduction non-uniform phenomenon when avoiding finishing the heat drying operation under vacuum is discontinuous, and then avoids the damage of article to be dried (not shown).
Though in conjunction with the accompanying drawings the specific embodiment of the present invention is illustrated, should be appreciated that these explanations only are exemplary.According to connotation of the present invention, it may occur to persons skilled in the art that the change and the replacement form of various equivalences.Scope of the present invention is by claim but not the above-mentioned explanation of the specific embodiment is limited.
Claims (10)
1. vacuum dryer, it has the casing of sealing, vavuum pump and driving vacuum pump motor, casing is provided with the hermatic door of unlatching, its inside is provided with heater, vavuum pump is tightly connected with the bleeding point of casing mutually by evacuating valve and exhaust tube, it is characterized in that, this vacuum dryer also has air circulation system, gas make-up device and vacuum breaker device, described air circulation system has the supply and exhaust device, the air outlet of this supply and exhaust device is by the air circulation valve, the gas outlet of escape pipe and casing is tightly connected, and the other end of supply and exhaust device passes through air intake valve, air inlet pipe is tightly connected mutually with the air inlet of casing.
2. vacuum dryer as claimed in claim 1 is characterized in that the heater of described box house comprises heating plate and Homogeneouslly-radiating plate.
3. vacuum dryer as claimed in claim 2 is characterized in that evenly being provided with louvre on the described Homogeneouslly-radiating plate.
4. vacuum dryer as claimed in claim 3 is characterized in that described heating plate and Homogeneouslly-radiating plate below is provided with baffle plate.
5. vacuum dryer as claimed in claim 4 is characterized in that described gas make-up device top also is provided with gas input port.
6. vacuum dryer as claimed in claim 5 is characterized in that described gas make-up device inside is provided with gas-heating apparatus.
7. vacuum dryer as claimed in claim 6 is characterized in that having compression drying gas in the described gas make-up device.
8. vacuum dryer as claimed in claim 7 is characterized in that being provided with in the casing buffer unit, and described buffer unit is arranged on the below of vacuum breaker device and gas make-up device.
9. one kind is used drying equipment as claimed in claim 1 to carry out dry vacuum drying method, and it mainly may further comprise the steps:
(1) article to be dried is put into casing rear enclosed casing;
(2) start the interior heater of casing;
(3) then open evacuating valve, this moment, vavuum pump was started working;
(4) reach under the specified pressure when casing, close evacuating valve and open the gas make-up valve, the gas make-up device is supplemented to casing with associated gas;
(5) close the vacuum breaker valve of gas make-up valve open vacuum breaker device;
(6) the vacuum breaker valve of closing the vacuum breaker device is opened the air circulation valve, starts air circulation;
(7) after the execution air circulation reaches special time, close air circulation system, close the air circulation valve;
(8) repeating step (3) is to (7), carry out specific rounds after, open casing and take out dry goods, finish drying process.
10. vacuum drying method as claimed in claim 9 is characterized in that further comprising the steps ofly, promptly when opening the heater of casing, opens the gas-heating apparatus that is arranged at the gas make-up device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271537 CN101957127A (en) | 2010-09-03 | 2010-09-03 | Vacuum drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271537 CN101957127A (en) | 2010-09-03 | 2010-09-03 | Vacuum drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101957127A true CN101957127A (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010271537 Pending CN101957127A (en) | 2010-09-03 | 2010-09-03 | Vacuum drying equipment |
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| CN (1) | CN101957127A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538412A (en) * | 2012-02-28 | 2012-07-04 | 宏芳香料（昆山）有限公司 | Paste drying equipment and method |
| CN102645789A (en) * | 2011-09-27 | 2012-08-22 | 北京京东方光电科技有限公司 | Solidifying system and solidifying method of orientation film |
| CN102856536A (en) * | 2012-09-20 | 2013-01-02 | 江苏先特能源装备有限公司 | Pressure container curing chamber and curing method thereof |
| CN103310805A (en) * | 2012-03-13 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Solidification process device |
| CN103307856A (en) * | 2012-03-16 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Vacuum drying device |
| CN103307857A (en) * | 2012-03-16 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Vacuum drying method |
| CN103575072A (en) * | 2012-07-31 | 2014-02-12 | 苏州维艾普新材料有限公司 | Vacuum dehumidifying heat-cycle drying oven |
| CN104482725A (en) * | 2014-12-15 | 2015-04-01 | 上海明兴开城超音波科技有限公司 | Low-pressure drying method and low-pressure drying device for cleaning component |
| CN104600005A (en) * | 2014-12-24 | 2015-05-06 | 苏州华冲精密机械有限公司 | Special oven for packaging |
| CN104764302A (en) * | 2014-01-02 | 2015-07-08 | 台湾神户电池股份有限公司 | Drying equipment of accumulator pole plate and method thereof |
| CN105605890A (en) * | 2016-03-15 | 2016-05-25 | 浙江宇光照明科技有限公司 | Automatic vacuum drier |
| CN106403510A (en) * | 2015-07-29 | 2017-02-15 | 广西梧州制药（集团）股份有限公司 | Application of convection-microwave heat transfer mode in reduced pressure drying |
| CN111075940A (en) * | 2019-12-17 | 2020-04-28 | 广东创智智能装备有限公司 | Connecting valve convenient for vacuumizing and breaking vacuum |
| CN112568469A (en) * | 2019-09-27 | 2021-03-30 | 安徽顶呱呱食品有限公司 | Nut baking and frying equipment |
| CN113786338A (en) * | 2020-10-20 | 2021-12-14 | 湖南省博世康中医药有限公司 | A device of calcining smoldering for chinese-medicinal material |
| CN113915956A (en) * | 2021-10-13 | 2022-01-11 | 大冶市兴进铝业有限公司 | Section bar drying device |
| CN114688840A (en) * | 2022-03-28 | 2022-07-01 | 江西新龙生物科技股份有限公司 | Nitrogen-introducing drying equipment for fungus solid fermentation |
| CN117268060A (en) * | 2023-03-14 | 2023-12-22 | 杭州优尼克消毒设备有限公司 | Vacuum drying device and drying method |
| CN118391881A (en) * | 2024-07-01 | 2024-07-26 | 季华实验室 | Vacuum drying system and control method thereof |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645789B (en) * | 2011-09-27 | 2015-04-22 | 北京京东方光电科技有限公司 | Solidifying system and solidifying method of orientation film |
| CN102645789A (en) * | 2011-09-27 | 2012-08-22 | 北京京东方光电科技有限公司 | Solidifying system and solidifying method of orientation film |
| CN102538412A (en) * | 2012-02-28 | 2012-07-04 | 宏芳香料（昆山）有限公司 | Paste drying equipment and method |
| CN103310805A (en) * | 2012-03-13 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Solidification process device |
| CN103307856A (en) * | 2012-03-16 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Vacuum drying device |
| CN103307857A (en) * | 2012-03-16 | 2013-09-18 | 东莞新科技术研究开发有限公司 | Vacuum drying method |
| CN103575072A (en) * | 2012-07-31 | 2014-02-12 | 苏州维艾普新材料有限公司 | Vacuum dehumidifying heat-cycle drying oven |
| CN102856536A (en) * | 2012-09-20 | 2013-01-02 | 江苏先特能源装备有限公司 | Pressure container curing chamber and curing method thereof |
| CN104764302A (en) * | 2014-01-02 | 2015-07-08 | 台湾神户电池股份有限公司 | Drying equipment of accumulator pole plate and method thereof |
| CN104482725A (en) * | 2014-12-15 | 2015-04-01 | 上海明兴开城超音波科技有限公司 | Low-pressure drying method and low-pressure drying device for cleaning component |
| CN104600005A (en) * | 2014-12-24 | 2015-05-06 | 苏州华冲精密机械有限公司 | Special oven for packaging |
| CN106403510A (en) * | 2015-07-29 | 2017-02-15 | 广西梧州制药（集团）股份有限公司 | Application of convection-microwave heat transfer mode in reduced pressure drying |
| CN106403510B (en) * | 2015-07-29 | 2019-02-19 | 广西梧州制药（集团）股份有限公司 | Application of convection-microwave heat transfer mode in reduced pressure drying |
| CN105605890A (en) * | 2016-03-15 | 2016-05-25 | 浙江宇光照明科技有限公司 | Automatic vacuum drier |
| CN112568469A (en) * | 2019-09-27 | 2021-03-30 | 安徽顶呱呱食品有限公司 | Nut baking and frying equipment |
| CN111075940A (en) * | 2019-12-17 | 2020-04-28 | 广东创智智能装备有限公司 | Connecting valve convenient for vacuumizing and breaking vacuum |
| CN111075940B (en) * | 2019-12-17 | 2024-06-04 | 广东创智智能装备有限公司 | Connecting valve convenient for vacuumizing and breaking vacuum |
| CN113786338A (en) * | 2020-10-20 | 2021-12-14 | 湖南省博世康中医药有限公司 | A device of calcining smoldering for chinese-medicinal material |
| CN113915956A (en) * | 2021-10-13 | 2022-01-11 | 大冶市兴进铝业有限公司 | Section bar drying device |
| CN114688840A (en) * | 2022-03-28 | 2022-07-01 | 江西新龙生物科技股份有限公司 | Nitrogen-introducing drying equipment for fungus solid fermentation |
| CN117268060A (en) * | 2023-03-14 | 2023-12-22 | 杭州优尼克消毒设备有限公司 | Vacuum drying device and drying method |
| CN117268060B (en) * | 2023-03-14 | 2024-01-26 | 杭州优尼克消毒设备有限公司 | Vacuum drying device and drying method |
| CN118391881A (en) * | 2024-07-01 | 2024-07-26 | 季华实验室 | Vacuum drying system and control method thereof |
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Application publication date: 20110126 |