CN112406057A - Preparation process of automobile brake master cylinder piston - Google Patents
Preparation process of automobile brake master cylinder piston Download PDFInfo
- Publication number
- CN112406057A CN112406057A CN202011159281.7A CN202011159281A CN112406057A CN 112406057 A CN112406057 A CN 112406057A CN 202011159281 A CN202011159281 A CN 202011159281A CN 112406057 A CN112406057 A CN 112406057A
- Authority
- CN
- China
- Prior art keywords
- drying
- air
- auxiliary
- pipe
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- 238000001035 drying Methods 0.000 claims abstract description 456
- 239000002994 raw material Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 42
- 230000008569 process Effects 0.000 claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000012766 organic filler Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000002274 desiccant Substances 0.000 claims description 203
- 238000010438 heat treatment Methods 0.000 claims description 127
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 96
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 94
- 239000002808 molecular sieve Substances 0.000 claims description 94
- 239000000741 silica gel Substances 0.000 claims description 67
- 229910002027 silica gel Inorganic materials 0.000 claims description 67
- 239000011148 porous material Substances 0.000 claims description 50
- 230000008929 regeneration Effects 0.000 claims description 47
- 238000011069 regeneration method Methods 0.000 claims description 47
- 238000005192 partition Methods 0.000 claims description 42
- 230000000694 effects Effects 0.000 claims description 27
- 238000009423 ventilation Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000004913 activation Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000011049 filling Methods 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 9
- -1 polybutylene terephthalate Polymers 0.000 claims description 7
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical group S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 3
- 239000013589 supplement Substances 0.000 claims 2
- 238000004321 preservation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 51
- 238000001179 sorption measurement Methods 0.000 description 14
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000010981 drying operation Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001603 clinoptilolite Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000007602 hot air drying Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052680 mordenite Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7494—Pistons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to a preparation process of an automobile brake master cylinder piston, which comprises the following steps of S1: preparing plastic and organic fillers; s2, mixing materials: mixing plastic and organic filler according to a one-to-zero-one ratio; s3, drying: putting the mixed raw materials into an oven for drying, wherein the drying temperature is controlled to be sixty-seventy ℃, and the drying time is controlled to be half an hour to one hour; s4, injection: feeding the dried raw materials into an injection machine, controlling the temperature to be raised to two hundred twenty ℃, controlling the injection time to be ten to twenty seconds, controlling the high pressure to be zero to five seconds, and cooling for ten to fifteen seconds; s5, shaping: the molded part is placed in boiling water for twenty to thirty minutes and then taken out to air dry at room temperature. The automobile master cylinder piston is made of plastic, the material utilization rate is high, the process is simple, the durability is high, the processing and drying efficiency is high, the overall preparation efficiency is greatly improved, and the yield in unit time is improved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a preparation process of an automobile brake master cylinder piston.
Background
The brake master cylinder is a key component in an automobile brake system and mainly has the advantages that a piston in the master cylinder is pushed to move by the displacement of pedal movement, so that hydraulic pressure is generated, the hydraulic pressure pushes a brake cylinder to move to expand a brake shoe, and an automobile is braked by the friction between the brake shoe and a wheel drum, the original brake master cylinder only has one piston, so that four brake wheel cylinders of a front shaft and a rear shaft are driven, when one wheel cylinder leaks oil, the whole brake system fails, the existing pistons are made of metal materials, although the pistons made of the metal materials can meet the requirements of master cylinder products, the defects exist, such as the metal pistons need to be subjected to the processes of cutting, rough turning, finish turning, drilling, tapping, deburring, oxidation, centerless grinding and the like, the processes are complex, the production efficiency is low, and the problem of low material utilization rate is caused in the process of cutting and drilling, the low machining precision also requires manual handling and the low preparation quality, and thus improvements are required.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the preparation process of the automobile brake master cylinder piston, which has high preparation efficiency, good preparation quality and high material utilization rate in the drying process and can be recycled.
The technical scheme of the invention is realized as follows: a preparation process of an automobile brake master cylinder piston is characterized by comprising the following steps:
s1, preparing materials: preparing plastic and organic fillers;
s2, mixing materials: mixing plastic and organic filler according to a one-to-zero-one ratio;
s3, drying: putting the mixed raw materials into an oven for drying, wherein the drying temperature is controlled to be sixty-seventy ℃, and the drying time is controlled to be half an hour to one hour;
s4, injection: feeding the dried raw materials into an injection machine, controlling the temperature to be raised to two hundred twenty ℃, controlling the injection time to be ten to twenty seconds, controlling the high pressure to be zero to five seconds, and cooling for ten to fifteen seconds;
s5, shaping: the molded part is placed in boiling water for twenty to thirty minutes and then taken out to air dry at room temperature.
Preferentially, the method comprises the following steps: the plastic is polybutylene terephthalate, and the organic filler is molybdenum disulfide.
Through adopting above-mentioned technical scheme, plastics are polybutylene terephthalate, polybutylene terephthalate warp little intensity height, the shrinkage factor is low, main material preparation brake master cylinder has avoided using time-varying deformation shrink phenomenon, organic filler is molybdenum disulfide, a sliding property for increasing the piston, adopt plastics to make car master cylinder piston, high to the utilization ratio of material, simple process, can once injection moulding, and through the mould shaping, the stable convenient transport of size, plastics are small to the proportion of metal simultaneously, the product is lighter, the weight of whole car has been alleviateed, and the plastics piston can not scotch the cylinder body at the operation in-process, can improve brake master cylinder's life, the durability is high, it is high to process drying efficiency simultaneously, holistic preparation efficiency promotes greatly, the output in the unit interval has been improved.
The invention also discloses a preparation device suitable for the preparation process of the automobile brake master cylinder piston, which is characterized in that: the drying oven comprises a box body with a sealing door, a drying chamber and a hot air circulation pipeline, wherein the drying chamber and the hot air circulation pipeline are arranged in the box body, a heat insulation layer is arranged in a gap part between the box body, the drying chamber and the hot air circulation pipeline, an upper inner cavity and a lower inner cavity are respectively arranged in a top plate of the drying chamber and a bottom plate of the drying chamber, one end of the hot air circulation pipeline is communicated with the lower inner cavity, a plurality of vent holes which are respectively communicated with the upper inner cavity and the lower inner cavity are distributed on the opposite sides of the top plate of the drying chamber and the bottom plate of the drying chamber, a circulating fan is arranged in the hot air circulation pipeline, an air outlet end of the circulating fan is communicated with the upper inner cavity through a circulating air pipe, a plurality of partition plates are arranged in the drying chamber, the partition plates are respectively.
By adopting the technical scheme, the raw material to be dried can be placed on the partition plate to be dried or the partition plate is drawn out to be dried in the original container of the raw material as required, the air is heated by the heating pipe to dry the raw material, under the working state of the circulating fan, the circulating fan enables hot air to enter the lower inner cavity from a plurality of vent holes on the bottom plate of the drying chamber and enter the hot air circulating pipeline, the hot air is sent back to the upper inner cavity through the circulating air pipe at the air outlet end of the circulating fan and passes through a plurality of partition plates from top to bottom again from the top of the drying chamber to the heating pipe for repeated heating and drying, in the whole process, as a plurality of vent holes respectively communicated with the upper inner cavity and the lower inner cavity are distributed at the opposite sides of the top plate and the bottom plate of the drying chamber, a plurality of ventilation holes are distributed on, and the hot air dried from top to bottom is sucked back to the top of the drying chamber from the bottom for circulation, so that the whole energy consumption is reduced by recycling, and the control of the drying temperature is easy to maintain.
The invention is further configured to: the hot air circulation pipeline is characterized in that an air supply pipe penetrating to the outer side is connected to the pipe wall of the hot air circulation pipeline, an air supply valve is arranged at one end of the air supply pipe and in the hot air circulation pipeline, the air supply pipe surrounds the inner portion of the hot air circulation pipeline in a protection pipe, an auxiliary heating pipe is arranged at the upper end of the air supply valve, a safety pipe is connected to the side wall of the drying chamber, and a safety valve is arranged at the outer end of the safety pipe.
By adopting the technical scheme, the air supply pipe which is communicated to the outer side is connected to the pipe wall of the hot air circulation pipeline, the air supply pipe can act when the air pressure in the drying chamber is too low to supply air, and the auxiliary heating pipe heats the air, so that the air supply process can not generate great influence on the original hot air temperature; the side wall of the drying chamber is connected with a safety pipe, the outer end of the safety pipe is provided with a safety valve, the safety valve can act when the air pressure in the drying chamber is too high, the air is exhausted and decompressed, the stability of the air pressure in the drying chamber is guaranteed, and the safety is guaranteed.
The invention is further configured to: it is used for dry cycle steam and the dry subassembly of regeneration repeatedly to establish ties on the circulation tuber pipe, dry subassembly is including the dry main tank that has airflow inlet and airflow outlet, be connected with moist air current exit tube on the dry main tank lateral wall, dry main tank inside is equipped with and is used for drying and the drying portion of deriving by airflow outlet to the steam that gets into dry main tank via airflow inlet, the drying portion content is equipped with the drier, dry main tank internally mounted has and is used for heating the drier with the moisture evaporation intensification desorption that adsorbs the drier and with the heating device that moisture was derived by moist air current exit tube.
By adopting the technical scheme, the drying component for drying the circulating hot gas and regenerating is connected in series on the circulating air pipe, in the process of hot gas circulation, the circulating hot gas is adsorbed and dried by the drying component to remove the water vapor brought by drying raw materials in the hot gas and keep the dryness of the circulating hot gas, and after the hot gas is repeatedly circulated and dried, the drying component is regenerated for recycling, the drying component comprises a drying main box with an airflow inlet and an airflow outlet, a drying part used for drying the hot gas entering the drying main box through the airflow inlet and guiding out the hot gas from the airflow outlet is arranged in the drying main box, a drying agent is contained in the drying part, the hot gas enters from the airflow inlet during drying, after the drying agent is dried, the hot gas is guided out from the airflow outlet to an upper inner cavity for circulating drying, the drying efficiency is greatly improved, and after the hot gas is adsorbed and dried for a long time, at dry main tank internally mounted have heating device for after stopping the steam circulation, heat the drier and in order to promote the temperature and desorb the moisture evaporation of drier absorption and derive the moisture by moist air current exit tube, restart reuse absorption drying steam after the regeneration, improved the utilization ratio of resource, need not change drier and dry portion frequently, use reliably simply.
The invention is further configured to: the drying part comprises a drying pipe and filter plates, wherein one end of the drying pipe is communicated with the airflow inlet, the filter plates are sequentially arranged in the drying pipe in parallel at intervals, coarse silica gel and a 5A molecular sieve drying agent are at least filled between the filter plates, the average pore diameter of the coarse silica gel drying agent is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume is eight to one milliliter per gram, the heating regeneration temperature of the drying agent is one hundred to one hundred fifty degrees centigrade, the filling volume proportion of the drying agent in the drying pipe is thirty percent to seventy percent of the coarse silica gel drying agent, the 5A molecular sieve drying agent is seventy percent to thirty percent, the coarse silica gel drying agent is positioned between the filter plates and close to the airflow inlet end side, and the 5A molecular sieve is filled behind the coarse silica gel drying agent.
By adopting the technical scheme, according to the basic characteristics of temperature swing adsorption drying, higher temperature is not beneficial to the adsorption of moisture and the improvement of drying effect, therefore, in the actual drying and using process, the drying temperature in the oven is controlled to be sixty ℃ to seventy ℃, the silica gel drying agent can be used for drying technology, at present, different types and specifications of fine pore silica gel and coarse pore silica gel can be generally divided, the average pore diameter of the former is smaller, generally two to three nanometers, the specific surface area is relatively larger six hundred five to eight hundred square meters per gram, the pore volume zero point is three five to zero point four five milliliters per gram, the average pore diameter of the latter is larger, generally eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume zero point is eight to one milliliter per gram, a large number of test results show that the surface area of the coarse pore silica gel is correspondingly large, the ability of the coarse-pore silica gel to absorb water is stronger than that of the fine-pore silica gel, so that the drying and water absorption of hot gas are correspondingly stronger, the dryness of the circulating hot gas is ensured, the drying efficiency of raw materials is improved, the time required by drying is greatly shortened, and different types and models such as mordenite molecular sieves, clinoptilolite molecular sieves, 5A molecular sieves and the like can be contained in common molecular sieve drying agents. Test results show that different molecular sieves show obvious differences and different results on moisture adsorption of dry hot gas, and only a composite drying bed layer formed by a 5A molecular sieve drying agent and a coarse-pore silica gel drying agent according to a certain proportion can adapt to and meet the drying requirement that the total moisture in the rapidly-adsorbed hot gas mixed gas is less than 0.0001.
Table 1 comparison of moisture content in hot air after drying for drying agent type to hot air drying
As shown in the above table, any one of the above desiccants can not maximize the drying effect, so as to improve the dryness of hot gas and improve the efficiency of drying raw materials, the coarse silica gel and the 5A molecular sieve which have the best drying effect are matched with each other, and the dehydration drying effect after combination according to a certain proportion is far superior to the drying effect of a single desiccant, wherein the loading volume proportion of the desiccant in the drying tube is that the coarse silica gel desiccant is thirty percent to seventy percent, the 5A molecular sieve desiccant is seventy percent to thirty percent, the drying effect of the hot gas played by the proportion is relatively average, and the desiccant such as the molecular sieve after drying and adsorption can be activated, regenerated and reused after being heated and properly ventilated or evacuated and desorbed. Even under the condition of ventilation, the regeneration temperature of the molecular sieve generally needs to reach more than 200 ℃, the higher the temperature is, the better the recovery and activation of the performance of the molecular sieve is, and the drying depth of the moisture at the next time is favorably improved, but the overhigh regeneration temperature can shorten the service life of the molecular sieve drying agent, in order to more effectively solve the regeneration of the 5A molecular sieve drying agent, reduce the activation and regeneration temperature of the 5A molecular sieve drying agent and not obviously influence the activation and regeneration effect of the 5A molecular sieve drying agent, the coarse-pore silica gel drying agent is positioned between a plurality of filter plates and close to the side of an air flow inlet, the 5A molecular sieve is filled behind the coarse-pore silica gel drying agent, more moisture is treated by the coarse-pore silica gel drying agent, and the rest moisture enters the 5. The filling mode can reduce the activation regeneration temperature of the composite drying agent consisting of the 5A molecular sieve to below 150 ℃. If the drying depth index of the water is relaxed, the activation regeneration temperature of the 5A molecular sieve can be further reduced, so that the optimal effect of reducing energy consumption and meeting the requirement of normal production is achieved. Under the condition of meeting production requirements and design indexes, the filling proportion of the coarse silica gel is increased as much as possible, which is favorable for reducing the water absorption load of the 5A molecular sieve. Aiming at hot gases with different moisture contents, the drying depth of the moisture in the dried hot gases can even reach an ideal index of less than 0.0001 by selecting and adjusting the filling proportion of the silica gel and the 5A molecular sieve and matching with proper regeneration temperature.
The invention is further configured to: be provided with the baffler between drying duct and the air current export, it is provided with a plurality of holes to link up along the circumferencial direction on the baffler, and the baffler middle part rotates and is provided with the axis of rotation, be provided with a plurality of rotating vane on the axis of rotation lateral wall and be used for revoluting the axis of rotation axis rotation controlled ground and rotate with opening or closing a plurality of holes simultaneously, be fixed with on the baffler and be used for driving axis of rotation pivoted driving motor, be provided with the on-off valve on the moist air current exit tube, air current import and circulated air pipe link are provided with the magenetic exchange valve, the dry owner case outside is provided with the air feed fan and connects the tuber pipe at air feed fan air outlet.
By adopting the technical scheme, when in use, the raw material to be dried can be placed on the partition plate to be dried or the partition plate is pumped out to be dried in the original container of the raw material according to the requirement, air is heated by the heating pipe to dry the raw material, under the working state of the circulating fan, the circulating fan enables hot air to enter the lower inner cavity from a plurality of vent holes on the bottom plate of the drying chamber and enter the hot air circulating pipeline, the hot air enters the drying pipe through the circulating air pipe at the air outlet end of the circulating fan and the air flow inlet, coarse silica gel and 5A molecular sieve drying agent are at least filled between a plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse silica gel drying agent and the 5A molecular sieve drying agent, hot air is led out to the upper inner cavity from the air flow outlet, passes through the partition plate from the top of the drying chamber downwards again through a plurality, circulating, after adsorbing dry hot air for a long time, arranging an electromagnetic directional valve at the connecting end of an airflow inlet and a circulating air pipe, stopping the operation of a circulating fan, switching the electromagnetic directional valve to disconnect the connecting end of the airflow inlet and the circulating air pipe, opening an on-off valve arranged on a wet airflow outlet pipe at the moment, operating a heating device in a drying main box to raise the temperature in the drying main box to between one hundred and fifty ℃, arranging a baffle plate between the drying pipe and the airflow outlet, arranging a plurality of holes on the baffle plate along the circumferential direction in a penetrating manner, rotatably arranging a rotating shaft in the middle of the baffle plate, arranging a plurality of rotating blades on the side wall of the rotating shaft for rotating around the axis of the rotating shaft in a controlled manner to simultaneously open or close the plurality of holes, fixing a driving motor for driving the rotating shaft to rotate on the baffle plate, operating the driving motor, rotating the rotating shaft and driving the plurality of rotating blades, the outer side of the drying main box is provided with an air supply fan and an air outlet pipe connected with an air outlet of the air supply fan, one end of the air outlet pipe is connected with an airflow inlet, the air supply fan operates, air is supplied into the drying pipe through the air outlet pipe, the coarse silica gel drying agent and the 5A molecular sieve drying agent are activated and regenerated by heating and proper ventilation, moisture and impurities occluded in the drying agent are desorbed and desorbed out of the drying main box at the same time and are taken out of the drying main box, the drying agent is regenerated, then the heating device stops heating, the air supply fan correspondingly increases the rotating speed to operate, the normal temperature air is accelerated to cool the high-temperature drying agent, the activity of the high-temperature drying agent is recovered, then the air supply fan stops operating, the driving motor operates, the rotating shaft rotates and drives a plurality of rotating blades to open a plurality of holes at the same time, an on-off, the electromagnetic directional valve is switched to reconnect the air inlet and the connecting end of the circulating air pipe, and hot air is continuously circulated and dried.
The invention is further configured to: airflow outlet department is provided with humidity transducer, the box outside is provided with the controller of being connected with humidity transducer electricity, it has the switching drying subassembly to connect in parallel on the circulation tuber pipe, switching drying subassembly makes drying subassembly heating regeneration drier and switching steam let in to switching drying subassembly dry or make switching drying subassembly heating regeneration drier and switching steam let in to drying subassembly dry when presetting humidity upper limit value in reaching the controller based on switching drying subassembly drying steam humidity when reaching the controller.
By adopting the technical scheme, the invention effectively solves the problem of drying raw materials without stopping the hot air in the process of drying the regenerated drying agent, ensures the maximum function of the drying oven, completes the rapid drying of the raw materials, ensures that the drying component heats the regenerated drying agent and switches the hot air to be introduced into the switching drying component for drying when the humidity in the hot air dried by the drying part is sensed by the humidity sensor in real time to reach the preset upper limit value M of the humidity in the controller, ensures that the hot air keeps the drying cycle to dry the raw materials all the time under the control of the controller, greatly improves the drying efficiency of the raw materials compared with the prior art, greatly increases the yield in unit time, greatly shortens the time required by drying, and when the humidity of the hot air dried by the switching drying component reaches the preset upper limit value M of the humidity in the controller after the drying in the switching drying component is switched, the switching drying component heats the regenerated drying agent and switches hot air to be introduced into the drying component for drying, the two components are in circulating fit, and the switching and the use are convenient and reliable.
The invention is further configured to: the switching drying component comprises a drying auxiliary box with an inlet and an outlet, a wet air flow auxiliary outlet pipe is connected to the side wall of the drying auxiliary box, the electromagnetic reversing valve is provided with an inlet end connected with the circulating air pipe and two outlet ends, one of the outlet ends is communicated with the air flow inlet, the other outlet end is communicated with the inlet, an auxiliary drying part used for drying hot air entering the drying auxiliary box through the inlet and leading out the hot air from the outlet is arranged in the drying auxiliary box, a drying agent is filled in the auxiliary drying part, an auxiliary heating device used for heating the drying agent to evaporate, heat and desorb moisture adsorbed by the drying agent and lead out the moisture from the wet air flow auxiliary outlet pipe is arranged in the drying auxiliary box, the auxiliary drying part comprises an auxiliary drying pipe with one end communicated with the inlet and filter plates which are sequentially arranged in parallel in the auxiliary drying pipe at intervals, and coarse silica gel and 5A molecular sieve drying agent are at least filled between the filter plates, wherein the average pore diameter of the coarse pore silica gel desiccant is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume is eight to one milliliter per gram, the heating regeneration temperature of the desiccant is one hundred to one hundred fifty degrees centigrade, the desiccant filling volume proportion in the auxiliary drying tube is thirty percent to seventy percent of the coarse pore silica gel desiccant, the 5A molecular sieve desiccant is seventy percent to thirty percent, the coarse pore silica gel desiccant is positioned between a plurality of filter plates and close to the inlet end side, the 5A molecular sieve is filled behind the coarse pore silica gel desiccant, an auxiliary baffle plate is arranged between the auxiliary drying tube and the outlet, a plurality of auxiliary holes are arranged on the auxiliary baffle plate in a penetrating way along the circumferential direction, an auxiliary rotating shaft is arranged in the middle of the auxiliary baffle plate in a rotating way, a plurality of auxiliary rotating blades are arranged on the side wall of the auxiliary rotating shaft and used for rotating around the axis of the auxiliary rotating shaft, the auxiliary blocking plate is fixedly provided with an auxiliary driving motor used for driving an auxiliary rotating shaft to rotate, an auxiliary on-off valve is arranged on the auxiliary humid airflow outlet pipe, an air outlet electromagnetic switching valve is arranged on the air outlet pipe and provided with an air inlet end and two air outlet ends, one air inlet end and one air outlet end are connected in series on the air outlet pipe, the other air outlet end is communicated with an inlet through a switching air pipe, an auxiliary humidity sensor is arranged at the outlet, and the auxiliary humidity sensor, the auxiliary driving motor, the auxiliary on-off valve, the electromagnetic reversing valve, the air outlet electromagnetic switching valve, the magnetic reversing valve, the air supply fan, the driving motor, the heating device, the auxiliary heating device and the on-off valve are respectively and electrically connected with the controller.
By adopting the technical scheme, when in use, the raw material to be dried can be placed on the partition plate to be dried or the partition plate is pumped out to be dried in the original container of the raw material according to the requirement, air is heated by the heating pipe to dry the raw material, the drying temperature is controlled to be sixty to seventy ℃, under the working state of the circulating fan, the circulating fan enables hot air to enter the lower inner cavity from a plurality of air holes on the bottom plate of the drying chamber and enter the hot air circulating pipeline, the hot air enters the drying pipe through the circulating air pipe at the air outlet end of the circulating fan and the air flow inlet, at least coarse silica gel and 5A molecular sieve drying agent are filled among a plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse silica gel drying agent and the 5A molecular sieve drying agent, the hot air is guided out to the upper inner cavity from the air flow outlet and passes through the plurality of partition plates from the top of the drying chamber, circulating; when a humidity sensor senses that the humidity in hot air dried by a drying part reaches an upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to an electromagnetic directional valve, an on-off valve, a heating device, a driving motor, an air supply fan and an air outlet electromagnetic switching valve, the electromagnetic directional valve is switched into a circulating air pipe communicated with an inlet, the hot air enters an auxiliary drying pipe through the circulating air pipe and the inlet, the hot air is respectively subjected to adsorption drying by a coarse silica gel drying agent and a 5A molecular sieve drying agent, the hot air is guided out of an upper inner cavity from an outlet, passes through a plurality of partition plates from the top of a drying chamber downwards through a plurality of vent holes and is repeatedly heated and dried at a heating pipe, circulation is carried out, after the hot air is switched and circulated, the on-off valve arranged on a wet air flow outlet pipe is opened, the heating device in the drying main box operates, and the temperature in the drying main box is increased to be between one, the driving motor operates, the rotating shaft rotates and drives a plurality of rotating blades to close a plurality of holes at the same time, the air outlet electromagnetic switching valve is switched into an air inlet end and an air outlet end which are connected in series on the air outlet pipe, the air supply fan operates, air is sent into the drying pipe through the air outlet pipe, the coarse silica gel desiccant and the 5A molecular sieve desiccant are activated and regenerated through heating and proper ventilation, moisture and impurities occluded in the desiccant are desorbed and desorbed at the same time and are taken out of the drying main box to regenerate the desiccant, then the heating device stops heating, the air supply fan correspondingly increases the rotating speed to work, normal temperature air is supplied to cool the high-temperature drying agent to recover the activity of the drying agent, then the air supply fan stops working, the driving motor operates, the rotating shaft rotates and drives the plurality of rotating blades to open the plurality of holes simultaneously, and the on-off valve arranged on the wet airflow outlet pipe is closed; when the auxiliary humidity sensor senses that the humidity in the hot air dried by the auxiliary drying part reaches an upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve, the auxiliary on-off valve, the auxiliary heating device, the auxiliary driving motor, the air supply fan and the air outlet electromagnetic directional valve, the electromagnetic directional valve is switched into a circulating air pipe to be communicated with the air flow inlet, the hot air enters the drying pipe through the circulating air pipe and the air flow inlet, the hot air is respectively subjected to adsorption drying by the coarse-pore silica gel drying agent and the 5A molecular sieve drying agent, the hot air is led out of the upper inner cavity from the outlet, passes through a plurality of partition plates from the top of the drying chamber downwards through a plurality of vent holes and then is repeatedly heated and dried at the heating pipe for circulation, after the hot air is switched to circulate, the auxiliary on-off valve arranged on the auxiliary outlet pipe of the wet air flow is opened, the temperature in the drying auxiliary box is raised to between one hundred ℃ and one hundred fifty ℃, an auxiliary driving motor operates, an auxiliary rotating shaft rotates and drives a plurality of auxiliary rotating blades to close a plurality of auxiliary holes simultaneously, an air outlet electromagnetic switching valve is switched into an air inlet end which is communicated with an inlet through a switching air pipe, an air supply fan operates, air is supplied into an auxiliary drying pipe through an air outlet pipe and a switching air pipe, the coarse silica gel drying agent and the 5A molecular sieve drying agent are activated and regenerated by heating and proper ventilation, moisture and impurities occluded in the drying agent are desorbed and taken out of the drying auxiliary box simultaneously, the drying agent is regenerated, then the auxiliary heating device stops heating, the air supply fan correspondingly increases the rotating speed to work, the normal-temperature air is accelerated to cool the high-temperature drying agent, the activity of the drying agent is recovered, and then the air supply fan stops working, the auxiliary driving motor operates, the auxiliary rotating shaft rotates and drives the auxiliary rotating blades to open the auxiliary holes simultaneously, and an auxiliary on-off valve arranged on the wet airflow auxiliary outlet pipe is closed; in the process of drying the raw materials by the oven, the humidity of hot air dried in the working process of the main drying box and the auxiliary drying box is kept to be detected in real time through the humidity sensor and the auxiliary humidity sensor, the detected value is transmitted to the controller, the controller controls the repeated switching drying and drying agent regeneration operation, the drying operation of the raw materials is kept through cyclic switching, the switching operation is stable, the drying efficiency is greatly improved, the whole service life is long, the drying cost is low, the drying resource consumption is low, and the environment-friendly development view of the country about energy conservation and emission reduction is met.
The invention also discloses a drying and using method of the preparation device suitable for the preparation process of the automobile brake master cylinder piston, which is characterized by comprising the following steps:
1) and drying for use: when in use, the raw material to be dried can be placed on the partition plate to be dried or the partition plate is pumped out to be dried in the original container of the raw material as required, air is heated by the heating pipe to dry the raw material, the drying temperature is controlled at sixty-seventy ℃, under the working state of the circulating fan, the circulating fan enables hot air to enter the lower inner cavity from a plurality of air holes on the bottom plate of the drying chamber and enter the hot air circulating pipeline, the hot air enters the drying pipe through the circulating air pipe at the air outlet end of the circulating fan and the air flow inlet, at least coarse-hole silica gel and 5A molecular sieve drying agent are filled among a plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse-hole silica gel drying agent and the 5A molecular sieve drying agent, the hot air is led out to the upper inner cavity from the air flow outlet and passes through the plurality of partition plates from the top of the drying, circulating;
2) and detection and regeneration: when a humidity sensor senses that the humidity in hot air dried by a drying part reaches an upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to an electromagnetic directional valve, an on-off valve, a heating device, a driving motor, an air supply fan and an air outlet electromagnetic switching valve, the electromagnetic directional valve is switched into a circulating air pipe communicated with an inlet, the hot air enters an auxiliary drying pipe through the circulating air pipe and the inlet, the hot air is respectively subjected to adsorption drying by a coarse silica gel drying agent and a 5A molecular sieve drying agent, the hot air is guided out of an upper inner cavity from an outlet, passes through a plurality of partition plates from the top of a drying chamber downwards through a plurality of vent holes and is repeatedly heated and dried at a heating pipe, circulation is carried out, after the hot air is switched and circulated, the on-off valve arranged on a wet air flow outlet pipe is opened, the heating device in the drying main box operates, and the temperature in the drying main box is increased to be between one, the driving motor operates, the rotating shaft rotates and drives a plurality of rotating blades to close a plurality of holes at the same time, the air outlet electromagnetic switching valve is switched into an air inlet end and an air outlet end which are connected in series on the air outlet pipe, the air supply fan operates, air is sent into the drying pipe through the air outlet pipe, the coarse silica gel desiccant and the 5A molecular sieve desiccant are activated and regenerated through heating and proper ventilation, moisture and impurities occluded in the desiccant are desorbed and desorbed at the same time and are taken out of the drying main box to regenerate the desiccant, then the heating device stops heating, the air supply fan correspondingly increases the rotating speed to work, normal temperature air is supplied to cool the high-temperature drying agent to recover the activity of the drying agent, then the air supply fan stops working, the driving motor operates, the rotating shaft rotates and drives the plurality of rotating blades to open the plurality of holes simultaneously, and the on-off valve arranged on the wet airflow outlet pipe is closed;
3) and switching regeneration: when the auxiliary humidity sensor senses that the humidity in the hot air dried by the auxiliary drying part reaches an upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve, the auxiliary on-off valve, the auxiliary heating device, the auxiliary driving motor, the air supply fan and the air outlet electromagnetic directional valve, the electromagnetic directional valve is switched into a circulating air pipe to be communicated with the air flow inlet, the hot air enters the drying pipe through the circulating air pipe and the air flow inlet, the hot air is respectively subjected to adsorption drying by the coarse-pore silica gel drying agent and the 5A molecular sieve drying agent, the hot air is led out of the upper inner cavity from the outlet, passes through a plurality of partition plates from the top of the drying chamber downwards through a plurality of vent holes and then is repeatedly heated and dried at the heating pipe for circulation, after the hot air is switched to circulate, the auxiliary on-off valve arranged on the auxiliary outlet pipe of the wet air flow is opened, the temperature in the drying auxiliary box is raised to between one hundred ℃ and one hundred fifty ℃, an auxiliary driving motor operates, an auxiliary rotating shaft rotates and drives a plurality of auxiliary rotating blades to close a plurality of auxiliary holes simultaneously, an air outlet electromagnetic switching valve is switched into an air inlet end which is communicated with an inlet through a switching air pipe, an air supply fan operates, air is supplied into an auxiliary drying pipe through an air outlet pipe and a switching air pipe, the coarse silica gel drying agent and the 5A molecular sieve drying agent are activated and regenerated by heating and proper ventilation, moisture and impurities occluded in the drying agent are desorbed and taken out of the drying auxiliary box simultaneously, the drying agent is regenerated, then the auxiliary heating device stops heating, the air supply fan correspondingly increases the rotating speed to work, the normal-temperature air is accelerated to cool the high-temperature drying agent, the activity of the drying agent is recovered, and then the air supply fan stops working, the auxiliary driving motor operates, the auxiliary rotating shaft rotates and drives the auxiliary rotating blades to open the auxiliary holes simultaneously, and an auxiliary on-off valve arranged on the wet airflow auxiliary outlet pipe is closed;
4) and repeating the cycle detection and regeneration: in the process of drying the raw materials by the oven, the humidity of hot air dried in the working process of the main drying box and the auxiliary drying box is kept to be detected in real time through the humidity sensor and the auxiliary humidity sensor, and a detection value is transmitted to the controller, and the controller respectively and correspondingly repeats the step (2) and the step (3) according to humidity data fed back by the humidity sensor and the auxiliary humidity sensor;
5) and finishing drying: and after the raw materials are dried for half an hour to one hour in advance, stopping the circulating fan, stopping the heating pipe from operating and heating, and then taking out the dried raw materials on the partition plate.
By adopting the technical scheme, on one hand, the drying method quickly adsorbs and dries hot gas through the coarse-pore silica gel drying agent and the 5A molecular sieve drying agent, so that the hot gas keeps dry to dry the raw materials, the circulating drying energy consumption is low, the process flow is simple, the operation is convenient, the service cycle of the drying agent is long, the first-class product rate and the high-class product rate of the raw material preparation can be greatly improved, in the process of drying the raw materials by the drying oven, the humidity of the hot gas dried in the working process of the main drying box and the auxiliary drying box is kept by the humidity sensor and the auxiliary humidity sensor in real time and the detection value is transmitted to the controller, the switching drying and drying agent regeneration operation is controlled by the controller to be repeated, the drying operation of the raw materials is kept by the circulating switching operation, the switching operation is stable, the drying efficiency is, the consumption of drying resources is low, and the method conforms to the national green development view on energy conservation and emission reduction.
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, and 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 schematic structural diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention discloses a preparation process of a piston of an automobile brake master cylinder, which comprises the following steps in a specific embodiment of the invention:
s1, preparing materials: preparing plastic and organic fillers;
s2, mixing materials: mixing plastic and organic filler according to a one-to-zero-one ratio;
s3, drying: putting the mixed raw materials into an oven for drying, wherein the drying temperature is controlled to be sixty-seventy ℃, and the drying time is controlled to be half an hour to one hour;
s4, injection: feeding the dried raw materials into an injection machine, controlling the temperature to be raised to two hundred twenty ℃, controlling the injection time to be ten to twenty seconds, controlling the high pressure to be zero to five seconds, and cooling for ten to fifteen seconds;
s5, shaping: the molded part is placed in boiling water for twenty to thirty minutes and then taken out to air dry at room temperature.
In a specific embodiment of the present invention, the plastic is polybutylene terephthalate, and the organic filler is molybdenum disulfide.
Through adopting above-mentioned technical scheme, plastics are polybutylene terephthalate, polybutylene terephthalate warp little intensity height, the shrinkage factor is low, main material preparation brake master cylinder has avoided using time-varying deformation shrink phenomenon, organic filler is molybdenum disulfide, a sliding property for increasing the piston, adopt plastics to make car master cylinder piston, high to the utilization ratio of material, simple process, can once injection moulding, and through the mould shaping, the stable convenient transport of size, plastics are small to the proportion of metal simultaneously, the product is lighter, the weight of whole car has been alleviateed, and the plastics piston can not scotch the cylinder body at the operation in-process, can improve brake master cylinder's life, the durability is high, it is high to process drying efficiency simultaneously, holistic preparation efficiency promotes greatly, the output in the unit interval has been improved.
Example 2
As shown in fig. 1, the invention also discloses a preparation device suitable for the preparation process of the automobile brake master cylinder piston, in the specific embodiment of the invention, the oven comprises a box body 1 with a sealing door, a drying chamber 2 and a hot air circulation pipeline 3, the drying chamber 2 and the hot air circulation pipeline 3 are arranged in the box body 1, the gap part between the box body 1, the drying chamber 2 and the hot air circulation pipeline 3 is an insulating layer 4, an upper inner cavity 11 and a lower inner cavity 12 are respectively arranged in a top plate 5 of the drying chamber and a bottom plate 6 of the drying chamber, one end of the hot air circulation pipeline 3 is communicated with the lower inner cavity 12, a plurality of vent holes 7 respectively communicated with the upper inner cavity 11 and the lower inner cavity 12 are distributed on the opposite sides of the top plate 5 of the drying chamber and the bottom plate 6 of the drying chamber, a circulation fan 8 is arranged in the hot air circulation pipeline 3, the air outlet end of the circulation fan 8 is, the drying chamber 2 is internally provided with a plurality of partition plates 16, the partition plates 16 are respectively erected on fixed blocks 17 on the inner wall of the drying chamber 2, a plurality of ventilation holes are distributed on the partition plates 16, and the inner wall of the drying chamber 2 is provided with heating pipes 18.
By adopting the technical scheme, the raw material to be dried can be placed on the partition plate 16 to be dried or the partition plate 16 is pumped out to be dried in the original container of the raw material as required, air is heated by the heating pipe 18 to dry the raw material, under the working state of the circulating fan 8, the circulating fan 8 enables hot air to enter the lower inner cavity 12 from a plurality of vent holes 7 on the bottom plate 6 of the drying chamber and enter the hot air circulating pipeline 3, the hot air is sent back to the upper inner cavity 11 through the circulating air pipe 10 at the air outlet end of the circulating fan 8 and passes through a plurality of partition plates 16 from the top of the drying chamber 2 downwards from the top to the heating pipe 18 through a plurality of vent holes 7 to be repeatedly heated and dried, in the whole process, because a plurality of vent holes 7 respectively communicated with the upper inner cavity 11 and the lower inner cavity 12 are distributed on the opposite sides of the top plate 5 and the bottom plate 6 of the, the steam can circulate by effective circulation, and the steam which dries the raw material from top to bottom is sucked back to the top of the drying chamber 2 from the bottom again, so that the steam circulates, the whole energy consumption is reduced by the recycling, and the drying temperature is easy to control.
In the specific embodiment of the present invention, an air supply pipe 9 penetrating to the outside is connected to the pipe wall of the hot air circulation pipeline 3, an air supply valve 13 is arranged at one end of the air supply pipe 9 and inside the hot air circulation pipeline 3, the air supply pipe 9 is partially enclosed inside a protection pipe 14 inside the hot air circulation pipeline 3, an auxiliary heating pipe 15 is arranged at the upper end of the air supply valve 13, a safety pipe 20 is connected to the side wall of the drying chamber 2, and a safety valve 21 is arranged at the outer end of the safety pipe 20.
By adopting the technical scheme, the air supply pipe 9 which is communicated to the outer side is connected on the pipe wall of the hot air circulation pipeline 3, the air supply pipe 9 can act when the air pressure in the drying chamber 2 is too low to supply air, and the auxiliary heating pipe 15 heats the air, so that the air supply process can not generate great influence on the original hot air temperature; the lateral wall of the drying chamber 2 is connected with a safety pipe 20, the outer end of the safety pipe 20 is provided with a safety valve 21, the safety valve 21 can act when the air pressure in the drying chamber 2 is too high, the air is exhausted and decompressed, the stability of the air pressure in the drying chamber 2 is ensured, and the safety is ensured.
In a specific embodiment of the present invention, a drying component for drying and regenerating the circulating hot gas is connected in series to the circulating air duct 10, the drying component includes a main drying box 51 having an air inlet and an air outlet, a wet air outlet pipe 52 is connected to a sidewall of the main drying box 51, a drying portion for drying the hot gas entering the main drying box 51 through the air inlet and leading out the hot gas from the air outlet is disposed inside the main drying box 51, a desiccant is contained in the drying portion, and a heating device for heating the desiccant to evaporate, raise temperature and desorb the moisture adsorbed by the desiccant and leading out the moisture from the wet air outlet pipe 52 is disposed inside the main drying box 51.
By adopting the technical scheme, a drying component for drying and regenerating circulating hot gas is connected in series on the circulating air pipe 10, in the process of hot gas circulation, the circulating hot gas is adsorbed and dried by the drying component to remove the moisture brought by drying raw materials in the hot gas and keep the dryness of the circulating hot gas, and the drying component is regenerated for reuse after drying the hot gas for many times, and comprises a drying main box 51 with an airflow inlet and an airflow outlet, a drying part for drying the hot gas entering the drying main box 51 through the airflow inlet and guiding out the hot gas from the airflow outlet is arranged in the drying main box 51, a drying agent is filled in the drying part, the hot gas enters from the airflow inlet during drying and is dried by the drying agent, and the hot gas is guided out from the airflow outlet to the upper inner cavity 11 for circulating drying, so that the drying efficiency is greatly improved, after the drying hot gas is adsorbed for a long time, a heating device is installed inside the drying main box 51 and used for heating the drying agent to evaporate and raise the temperature of the moisture adsorbed by the drying agent and desorb the moisture and lead the moisture out of the wet airflow outlet pipe 52 after the hot gas circulation is stopped, and the drying hot gas is repeatedly utilized after regeneration, so that the utilization rate of resources is improved, the drying agent and the drying part are not required to be frequently replaced, and the use is reliable and simple.
In an embodiment of the present invention, the drying portion includes a drying pipe 53 having one end communicating with the airflow inlet and filter plates sequentially arranged in parallel at intervals in the drying pipe 53, and at least coarse silica gel and 5A molecular sieve desiccant are filled between the filter plates, wherein the average pore diameter of the coarse silica gel desiccant is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume fraction is eight to one milliliter per gram, the heating regeneration temperature of the desiccant is one hundred degrees celsius to one hundred fifty degrees celsius, the desiccant filling volume ratio in the drying pipe 53 is thirty percent to seventy percent of the coarse silica gel desiccant, the 5A molecular sieve desiccant is seventy percent to thirty percent of the 5A molecular sieve desiccant, the coarse silica gel desiccant is located between the filter plates near the airflow inlet, and the 5A molecular sieve is filled behind the coarse silica gel desiccant.
By adopting the technical scheme, according to the basic characteristics of temperature swing adsorption drying, higher temperature is not beneficial to the adsorption of moisture and the improvement of drying effect, therefore, in the actual drying and using process, the drying temperature in the oven is controlled to be sixty ℃ to seventy ℃, the silica gel drying agent can be used for drying technology, at present, different types and specifications of fine pore silica gel and coarse pore silica gel can be generally divided, the average pore diameter of the former is smaller, generally two to three nanometers, the specific surface area is relatively larger six hundred five to eight hundred square meters per gram, the pore volume zero point is three five to zero point four five milliliters per gram, the average pore diameter of the latter is larger, generally eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume zero point is eight to one milliliter per gram, a large number of test results show that the surface area of the coarse pore silica gel is correspondingly large, the ability of the coarse-pore silica gel to absorb water is stronger than that of the fine-pore silica gel, so that the drying and water absorption of hot gas are correspondingly stronger, the dryness of the circulating hot gas is ensured, the drying efficiency of raw materials is improved, the time required by drying is greatly shortened, and different types and models such as mordenite molecular sieves, clinoptilolite molecular sieves, 5A molecular sieves and the like can be contained in common molecular sieve drying agents. Test results show that different molecular sieves show obvious differences and different results on moisture adsorption of dry hot gas, and only a composite drying bed layer formed by a 5A molecular sieve drying agent and a coarse-pore silica gel drying agent according to a certain proportion can adapt to and meet the drying requirement that the total moisture in the rapidly-adsorbed hot gas mixed gas is less than 0.0001.
Table 1 comparison of moisture content in hot air after drying for drying agent type to hot air drying
As shown in the above table, any one of the above desiccants can not maximize the drying effect, so as to improve the dryness of hot gas and improve the efficiency of drying raw materials, the coarse silica gel and the 5A molecular sieve which have the best drying effect are matched with each other, and the dehydration drying effect after combination according to a certain proportion is far superior to that of a single desiccant, wherein the volume proportion of the desiccant filled in the drying tube 53 is thirty percent to seventy percent of the coarse silica gel desiccant, and the 5A molecular sieve desiccant is seventy percent to thirty percent, the drying effect of the hot gas played by the proportion is relatively average, and the desiccant such as the molecular sieve after drying and adsorption can be activated, regenerated and reused after being heated and properly ventilated or evacuated and desorbed. Even under the condition of ventilation, the regeneration temperature of the molecular sieve generally needs to reach more than 200 ℃, the higher the temperature is, the better the recovery and activation of the performance of the molecular sieve is, and the drying depth of the moisture at the next time is favorably improved, but the overhigh regeneration temperature can shorten the service life of the molecular sieve drying agent, in order to more effectively solve the regeneration of the 5A molecular sieve drying agent, reduce the activation and regeneration temperature of the 5A molecular sieve drying agent and not obviously influence the activation and regeneration effect of the 5A molecular sieve drying agent, the coarse-pore silica gel drying agent is positioned between a plurality of filter plates and close to the side of an air flow inlet, the 5A molecular sieve is filled behind the coarse-pore silica gel drying agent, more moisture is treated by the coarse-pore silica gel drying agent, and the rest moisture enters the 5. The filling mode can reduce the activation regeneration temperature of the composite drying agent consisting of the 5A molecular sieve to below 150 ℃. If the drying depth index of the water is relaxed, the activation regeneration temperature of the 5A molecular sieve can be further reduced, so that the optimal effect of reducing energy consumption and meeting the requirement of normal production is achieved. Under the condition of meeting production requirements and design indexes, the filling proportion of the coarse silica gel is increased as much as possible, which is favorable for reducing the water absorption load of the 5A molecular sieve. Aiming at hot gases with different moisture contents, the drying depth of the moisture in the dried hot gases can even reach an ideal index of less than 0.0001 by selecting and adjusting the filling proportion of the silica gel and the 5A molecular sieve and matching with proper regeneration temperature.
In the embodiment of the present invention, a blocking plate 54 is disposed between the drying pipe 53 and the airflow outlet, a plurality of holes 55 are formed in the blocking plate 54 in a penetrating manner along the circumferential direction, a rotating shaft 56 is rotatably disposed in the middle of the blocking plate 54, a plurality of rotating blades are disposed on the side wall of the rotating shaft 56 and are used for rotating around the axis of the rotating shaft 56 in a controlled manner so as to open or close the plurality of holes 55, a driving motor 57 for driving the rotating shaft 56 to rotate is fixed on the blocking plate 54, an on-off valve 58 is disposed on the wet airflow outlet pipe 52, an electromagnetic directional valve 59 is disposed at the connection end of the airflow inlet and the circulating air pipe 10, an air supply fan 61 and an air outlet pipe 62 connected to the air outlet of the air supply fan 61 are disposed outside the drying main box 51, and one end.
By adopting the technical scheme, when in use, raw materials to be dried can be placed on the partition plate 16 to be dried or the partition plate 16 is pumped out to be dried in an original container of the raw materials according to requirements, air is heated by the heating pipe 18 to dry the raw materials, under the working state of the circulating fan 8, the circulating fan 8 enables hot air to enter the lower inner cavity 12 from a plurality of vent holes 7 on the bottom plate 6 of the drying chamber and enter the hot air circulating pipeline 3, the hot air enters the drying pipe 53 through the circulating air pipe 10 and the air flow inlet at the air outlet end of the circulating fan 8, at least coarse silica gel and 5A molecular sieve drying agent are filled among a plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse silica gel drying agent and the 5A molecular sieve drying agent, hot air is led out to the upper inner cavity 11 from the air flow outlet and passes through the plurality of partition plates 16 from the top of the drying chamber 2 downwards from the top to the heating, circulating, after adsorbing dry hot air for a long time, arranging an electromagnetic directional valve 59 at the connection end of the air inlet and the circulating air pipe 10, stopping the operation of the circulating fan 8, switching the electromagnetic directional valve 59 to disconnect the connection end of the air inlet and the circulating air pipe 10, at this time, opening and closing a valve 58 arranged on the wet air outlet pipe 52, operating a heating device in the drying main box 51 to raise the temperature in the drying main box 51 to between one hundred and fifty ℃, arranging a baffle plate 54 between the drying pipe 53 and the air outlet, arranging a plurality of holes 55 on the baffle plate 54 in a penetrating manner along the circumferential direction, arranging a rotating shaft 56 in the middle of the baffle plate 54 in a rotating manner, arranging a plurality of rotating blades on the side wall of the rotating shaft 56 for controllably rotating around the axis of the rotating shaft 56 to simultaneously open or close the plurality of holes 55, and fixing a driving motor 57 for driving the rotating shaft 56 on the baffle plate 54, the driving motor 57 is operated, the rotating shaft 56 rotates and drives a plurality of rotating blades to close a plurality of holes 55 at the same time, the outer side of the drying main box 51 is provided with an air supply fan 61 and an air outlet pipe 62 connected with an air outlet of the air supply fan 61, one end of the air outlet pipe 62 is connected with an air flow inlet, the air supply fan 61 operates, air is supplied into the drying pipe 53 through the air outlet pipe 62, heating and heating are carried out, proper ventilation is carried out, the coarse silica gel desiccant and the 5A molecular sieve desiccant are activated and regenerated, moisture and impurities occluded in the desiccant are desorbed and desorbed at the same time and are taken out of the drying main box 51, the desiccant is regenerated, then the heating device stops heating, the air supply fan 61 correspondingly increases the rotating speed to work, normal-temperature air is supplied to cool the high-temperature desiccant to recover the activity of the high-temperature desiccant, then, the air supply fan 61 stops working, the rotating shaft 56 rotates and drives the rotating blades to open the holes 55 at the same time, the on-off valve 58 arranged on the wet airflow outlet pipe 52 is closed, the circulating fan 8 starts to operate, the electromagnetic reversing valve 59 switches to reconnect the airflow inlet with the connecting end of the circulating air pipe 10, and hot air is continuously circulated and dried.
Example 3, as shown in fig. 1, is different from example 2 in that:
in a specific embodiment of the present invention, a humidity sensor 60 is disposed at the airflow outlet, a controller electrically connected to the humidity sensor 60 is disposed outside the box 1, and a switching drying component is connected in parallel to the circulating air duct 10, where the switching drying component heats the regenerated drying agent and switches hot air to the switching drying component for drying when the humidity at the airflow outlet reaches a preset humidity upper limit value in the controller, or heats the regenerated drying agent and switches hot air to the drying component for drying when the humidity of the hot air dried by the switching drying component reaches the preset humidity upper limit value in the controller.
By adopting the technical scheme, the invention effectively solves the problem of drying raw materials without stopping the hot air in the process of drying the regenerated drying agent, ensures the maximum function of the drying oven, completes the rapid drying of the raw materials, ensures that the drying component heats the regenerated drying agent and switches the hot air to be introduced into the switching drying component for drying when the humidity in the hot air dried by the drying part is sensed by the humidity sensor 60 in real time to reach the preset upper limit value M of the humidity in the controller, ensures that the hot air keeps the drying cycle to dry the raw materials all the time under the control of the controller, greatly improves the drying efficiency of the raw materials compared with the prior art, greatly increases the yield in unit time, greatly shortens the time required by drying, and when the humidity of the hot air dried by the switching drying component reaches the preset upper limit value M of the humidity in the controller after the drying in the switching drying component is switched, the switching drying component heats the regenerated drying agent and switches hot air to be introduced into the drying component for drying, the two components are in circulating fit, and the switching and the use are convenient and reliable.
In a specific embodiment of the present invention, the switching drying component includes a drying sub-box 81 having an inlet and an outlet, a wet airflow sub-outlet pipe 82 is connected to a sidewall of the drying sub-box 81, the electromagnetic directional valve 59 has an inlet connected to the circulating air pipe 10 and two outlet ends, one of the outlet ends is communicated with the airflow inlet, the other outlet end is communicated with the inlet, a sub-drying portion for drying hot air entering the drying sub-box 81 through the inlet and leading out the hot air from the outlet is disposed inside the drying sub-box 81, a drying agent is contained in the sub-drying portion, a sub-heating device for heating the drying agent to evaporate, raise temperature and desorb moisture adsorbed by the drying agent and lead out the moisture from the wet airflow sub-outlet pipe 82 is mounted inside the drying sub-box 81, the sub-drying portion includes a sub-drying pipe 83 having one end communicated with the inlet and filter plates sequentially disposed in parallel to the sub-drying pipe 83 at, coarse silica gel and a 5A molecular sieve desiccant are at least filled among the filter plates, wherein the average pore diameter of the coarse silica gel desiccant is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume is zero point eight to one milliliter per gram, the heating regeneration temperature of the desiccant is one hundred to one hundred fifty degrees centigrade, the desiccant filling volume proportion in the auxiliary drying tube 83 is thirty percent to seventy percent of the coarse silica gel desiccant, the 5A molecular sieve desiccant is seventy percent to thirty percent, the coarse silica gel desiccant is positioned between the filter plates and close to the inlet end side, the 5A molecular sieve is filled behind the auxiliary drying tube 83 and the outlet, an auxiliary blocking plate 84 is arranged between the auxiliary drying tube 83 and the outlet, a plurality of auxiliary holes 85 are arranged on the auxiliary blocking plate 84 in a penetrating manner along the circumferential direction, an auxiliary rotating shaft 86 is arranged in the middle of the auxiliary blocking plate 84 in a rotating manner, and a plurality of auxiliary rotating blades are arranged on the side wall of the auxiliary rotating shaft 86 and used for The auxiliary blocking plate 84 is fixed with an auxiliary driving motor 87 for driving an auxiliary rotating shaft 86 to rotate, an auxiliary on-off valve 88 is arranged on the wet airflow auxiliary outlet pipe 82, an air outlet electromagnetic switching valve 63 is arranged on the air outlet pipe 62, the air outlet electromagnetic switching valve 63 is provided with an air inlet end and two air outlet ends, one of the air inlet end and the air outlet end is connected in series on the air outlet pipe 62, the other air outlet end is communicated with an inlet through a switching air pipe 64, an auxiliary humidity sensor 90 is arranged at the outlet, and the auxiliary humidity sensor 90, the auxiliary driving motor 87, the auxiliary on-off valve 88, the electromagnetic reversing valve 59, the air outlet electromagnetic switching valve 63, the electromagnetic reversing valve 59, the air supply fan 61, the driving motor 57, the heating device, the auxiliary heating device and the on-off valve 58 are respectively and electrically connected with the controller.
By adopting the technical scheme, when in use, the raw material to be dried can be placed on the partition plate 16 to be dried or the partition plate 16 is pumped out to be dried in the original container of the raw material according to the requirement, air is heated by the heating pipe 18 to dry the raw material, the drying temperature is controlled to be sixty to seventy ℃, under the working state of the circulating fan 8, the circulating fan 8 enables hot air to enter the lower inner cavity 12 from the plurality of vent holes 7 on the bottom plate 6 of the drying chamber and enter the hot air circulating pipeline 3, the hot air enters the drying pipe 53 through the circulating air pipe 10 and the air flow inlet at the air outlet end of the circulating fan 8, coarse silica gel and 5A molecular sieve drying agents are at least filled between the plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse silica gel drying agents and the 5A molecular sieve drying agents, the hot air is guided out to the upper inner cavity 11 from the air flow outlet and passes through the plurality of vent holes 7 from top to bottom again from the top of the drying Drying and circulating; when the humidity sensor 60 senses that the humidity in the hot air dried by the drying part reaches the upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve 59, the on-off valve 58, the heating device, the driving motor 57, the air supply fan 61 and the air outlet electromagnetic directional valve 63, the electromagnetic directional valve 59 is switched into the circulating air pipe 10 to be communicated with the inlet, the hot air enters the auxiliary drying pipe 83 through the circulating air pipe 10 and the inlet, the hot air is respectively subjected to adsorption drying by the coarse-pore silica gel desiccant and the 5A molecular sieve desiccant, the hot air is guided out of the upper inner cavity 11 from the outlet, passes through the plurality of partition plates 16 from the top of the drying chamber 2 downwards through the plurality of vent holes 7 and then is repeatedly heated and dried at the heating pipe 18 for circulation, after the hot air is switched and circulated, the on-off valve 58 arranged on the wet air outlet pipe 52 is opened, the heating device in the drying main, the temperature in the drying main box 51 is raised to between one hundred and fifty ℃ so as to drive the motor 57 to operate, the rotating shaft 56 rotates and drives a plurality of rotating blades to simultaneously close a plurality of holes 55, the air outlet electromagnetic switching valve 63 is switched into an air inlet end and an air outlet end which are connected in series on the air outlet pipe 62, the air supply fan 61 operates, air is supplied into the drying pipe 53 through the air outlet pipe 62, the coarse silica gel desiccant and the 5A molecular sieve desiccant complete activation and regeneration by heating and appropriate ventilation, moisture and impurities occluded in the desiccant are simultaneously desorbed and taken out of the drying main box 51 so as to regenerate the desiccant, then the heating device stops heating, the air supply fan 61 correspondingly increases the rotating speed to work, the normal temperature air is accelerated to cool the high temperature desiccant, the activity is recovered, and then the air supply fan 61 stops working, when the driving motor 57 operates, the rotating shaft 56 rotates and drives a plurality of rotating blades to open a plurality of holes 55 at the same time, and the on-off valve 58 arranged on the humid airflow outlet pipe 52 is closed; when the auxiliary humidity sensor 90 senses that the humidity in the hot air dried by the auxiliary drying part reaches the upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve 59, the auxiliary on-off valve 88, the auxiliary heating device, the auxiliary driving motor 87, the air supply fan 61 and the air outlet electromagnetic directional valve 63, the electromagnetic directional valve 59 is switched into the circulating air pipe 10 to be communicated with the air flow inlet, the hot air enters the drying pipe 53 through the circulating air pipe 10 and the air flow inlet, the hot air is respectively adsorbed and dried by the coarse-pore silica gel desiccant and the 5A molecular sieve desiccant, the hot air is guided out of the upper inner cavity 11 from the outlet, passes through the plurality of partition plates 16 from the top of the drying chamber 2 downwards through the plurality of vent holes 7 and then reaches the heating pipe 18 for repeated heating and drying, circulation is performed, after the hot air switching circulation, the auxiliary on-off valve 88 arranged on the wet air flow auxiliary pipe, the auxiliary heating device in the auxiliary drying box 81 operates to raise the temperature in the auxiliary drying box 81 to between one hundred and fifty degrees centigrade, the auxiliary driving motor 87 operates, the auxiliary rotating shaft 86 rotates and drives a plurality of auxiliary rotating blades to close a plurality of auxiliary holes 85 at the same time, the air outlet electromagnetic switching valve 63 is switched into an air inlet end which is communicated with an inlet through the switching air pipe 64, the air supply fan 61 operates, air is supplied into the auxiliary drying pipe 83 through the air outlet pipe 62 and the switching air pipe 64, the coarse silica gel drying agent and the 5A molecular sieve drying agent are activated and regenerated by heating and proper ventilation, the moisture and impurities occluded in the drying agent are desorbed and taken out of the auxiliary drying box 81 at the same time to regenerate the drying agent, then the auxiliary heating device stops heating, the air supply fan 61 correspondingly increases the rotating speed to work, and the high-temperature drying agent is cooled by supplying normal-temperature air at an accelerated speed, the activity of the air supply fan is recovered, then, the air supply fan 61 stops working, the auxiliary driving motor 87 runs, the auxiliary rotating shaft 86 rotates and drives a plurality of auxiliary rotating blades to simultaneously open a plurality of auxiliary holes 85, and an auxiliary on-off valve 88 arranged on the wet airflow auxiliary outlet pipe 82 is closed; in the process of drying the raw materials by the oven, the humidity of hot air dried in the working process of the main drying box 51 and the auxiliary drying box 81 is kept to be detected in real time through the humidity sensor 60 and the auxiliary humidity sensor 90, the detected value is transmitted to the controller, the controller controls the repeated switching drying and drying agent regeneration operation, the drying operation of the raw materials is kept through cyclic switching, the switching operation is stable, the drying efficiency is greatly improved, the overall service life is long, the drying cost is low, the drying resource consumption is low, and the environment-friendly development of the state about energy conservation and emission reduction is met.
Example 4
The invention also discloses a drying and using method of the preparation device suitable for the preparation process of the automobile brake master cylinder piston, and the drying and using method comprises the following steps:
1) and drying for use: when in use, the raw material to be dried can be placed on the division plate 16 to be dried or the division plate 16 is pumped out to be dried in the original container of the raw material according to the requirement, air is heated by the heating pipe 18 to dry the raw material, the drying temperature is controlled at sixty to seventy ℃, under the working state of the circulating fan 8, the circulating fan 8 enables hot air to enter the lower inner cavity 12 from a plurality of vent holes 7 on the bottom plate 6 of the drying chamber and enter the hot air circulating pipeline 3, the hot air enters the drying pipe 53 through the circulating air pipe 10 and the air inlet at the air outlet end of the circulating fan 8, at least coarse silica gel and 5A molecular sieve drying agent are filled between a plurality of filter plates, after the hot air is respectively adsorbed and dried by the coarse silica gel drying agent and the 5A molecular sieve drying agent, the hot air is led out to the upper inner cavity 11 from the air outlet and passes through the plurality of division plates 16 from the top of the drying chamber 2 to the heating pipe 18, circulating;
2) and detection and regeneration: when the humidity sensor 60 senses that the humidity in the hot air dried by the drying part reaches the upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve 59, the on-off valve 58, the heating device, the driving motor 57, the air supply fan 61 and the air outlet electromagnetic directional valve 63, the electromagnetic directional valve 59 is switched into the circulating air pipe 10 to be communicated with the inlet, the hot air enters the auxiliary drying pipe 83 through the circulating air pipe 10 and the inlet, the hot air is respectively subjected to adsorption drying by the coarse-pore silica gel desiccant and the 5A molecular sieve desiccant, the hot air is guided out of the upper inner cavity 11 from the outlet, passes through the plurality of partition plates 16 from the top of the drying chamber 2 downwards through the plurality of vent holes 7 and then is repeatedly heated and dried at the heating pipe 18 for circulation, after the hot air is switched and circulated, the on-off valve 58 arranged on the wet air outlet pipe 52 is opened, the heating device in the drying main, the temperature in the drying main box 51 is raised to between one hundred and fifty ℃ so as to drive the motor 57 to operate, the rotating shaft 56 rotates and drives a plurality of rotating blades to simultaneously close a plurality of holes 55, the air outlet electromagnetic switching valve 63 is switched into an air inlet end and an air outlet end which are connected in series on the air outlet pipe 62, the air supply fan 61 operates, air is supplied into the drying pipe 53 through the air outlet pipe 62, the coarse silica gel desiccant and the 5A molecular sieve desiccant complete activation and regeneration by heating and appropriate ventilation, moisture and impurities occluded in the desiccant are simultaneously desorbed and taken out of the drying main box 51 so as to regenerate the desiccant, then the heating device stops heating, the air supply fan 61 correspondingly increases the rotating speed to work, the normal temperature air is accelerated to cool the high temperature desiccant, the activity is recovered, and then the air supply fan 61 stops working, when the driving motor 57 operates, the rotating shaft 56 rotates and drives a plurality of rotating blades to open a plurality of holes 55 at the same time, and the on-off valve 58 arranged on the humid airflow outlet pipe 52 is closed;
3) and switching regeneration: when the auxiliary humidity sensor 90 senses that the humidity in the hot air dried by the auxiliary drying part reaches the upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to the electromagnetic directional valve 59, the auxiliary on-off valve 88, the auxiliary heating device, the auxiliary driving motor 87, the air supply fan 61 and the air outlet electromagnetic directional valve 63, the electromagnetic directional valve 59 is switched into the circulating air pipe 10 to be communicated with the air flow inlet, the hot air enters the drying pipe 53 through the circulating air pipe 10 and the air flow inlet, the hot air is respectively adsorbed and dried by the coarse-pore silica gel desiccant and the 5A molecular sieve desiccant, the hot air is guided out of the upper inner cavity 11 from the outlet, passes through the plurality of partition plates 16 from the top of the drying chamber 2 downwards through the plurality of vent holes 7 and then reaches the heating pipe 18 for repeated heating and drying, circulation is performed, after the hot air switching circulation, the auxiliary on-off valve 88 arranged on the wet air flow auxiliary pipe, the auxiliary heating device in the auxiliary drying box 81 operates to raise the temperature in the auxiliary drying box 81 to between one hundred and fifty degrees centigrade, the auxiliary driving motor 87 operates, the auxiliary rotating shaft 86 rotates and drives a plurality of auxiliary rotating blades to close a plurality of auxiliary holes 85 at the same time, the air outlet electromagnetic switching valve 63 is switched into an air inlet end which is communicated with an inlet through the switching air pipe 64, the air supply fan 61 operates, air is supplied into the auxiliary drying pipe 83 through the air outlet pipe 62 and the switching air pipe 64, the coarse silica gel drying agent and the 5A molecular sieve drying agent are activated and regenerated by heating and proper ventilation, the moisture and impurities occluded in the drying agent are desorbed and taken out of the auxiliary drying box 81 at the same time to regenerate the drying agent, then the auxiliary heating device stops heating, the air supply fan 61 correspondingly increases the rotating speed to work, and the high-temperature drying agent is cooled by supplying normal-temperature air at an accelerated speed, the activity of the air supply fan is recovered, then, the air supply fan 61 stops working, the auxiliary driving motor 87 runs, the auxiliary rotating shaft 86 rotates and drives a plurality of auxiliary rotating blades to simultaneously open a plurality of auxiliary holes 85, and an auxiliary on-off valve 88 arranged on the wet airflow auxiliary outlet pipe 82 is closed;
4) and repeating the cycle detection and regeneration: in the process of drying the raw materials by the oven, the humidity sensor 60 and the auxiliary humidity sensor 90 are used for keeping the real-time detection of the humidity of hot air dried in the working process of the main drying box 51 and the auxiliary drying box 81 and transmitting a detection value to the controller, and the controller respectively and correspondingly repeats the step (2) and the step (3) according to the humidity data fed back by the humidity sensor 60 and the auxiliary humidity sensor 90;
5) and finishing drying: after the preset drying of the raw material is completed for half an hour to one hour, the operation of the circulating fan 8 is stopped, the heating pipe 18 stops operating and heating, and then the dried raw material on the partition plate 16 is taken out.
By adopting the technical scheme, on one hand, the drying method quickly adsorbs and dries hot gas through the coarse silica gel drying agent and the 5A molecular sieve drying agent, so that the hot gas keeps dry to dry the raw materials, the circulating drying energy consumption is low, the process flow is simple, the operation is convenient, the service cycle of the drying agent is long, the first-class product rate and the high-class product rate of the raw material preparation can be greatly improved, in the process of drying the raw materials by the drying oven, the humidity of the hot gas dried in the working process of the main drying box 51 and the auxiliary drying box 81 is kept by the humidity sensor 60 and the auxiliary humidity sensor 90, the detection value is transmitted to the controller, the switching drying and drying agent regeneration operation is controlled by the controller to be repeated, the drying operation of the raw materials is kept by the circulating switching, the switching operation is stable, the drying efficiency is greatly improved, the whole service, the consumption of drying resources is low, and the method conforms to the national green development view on energy conservation and emission reduction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A preparation process of an automobile brake master cylinder piston is characterized by comprising the following steps:
s1, preparing materials: preparing plastic and organic fillers;
s2, mixing materials: mixing plastic and organic filler according to a one-to-zero-one ratio;
s3, drying: putting the mixed raw materials into an oven for drying, wherein the drying temperature is controlled to be sixty-seventy ℃, and the drying time is controlled to be half an hour to one hour;
s4, injection: feeding the dried raw materials into an injection machine, controlling the temperature to be raised to two hundred twenty ℃, controlling the injection time to be ten to twenty seconds, controlling the high pressure to be zero to five seconds, and cooling for ten to fifteen seconds;
s5, shaping: the molded part is placed in boiling water for twenty to thirty minutes and then taken out to air dry at room temperature.
2. The preparation process of the automobile brake master cylinder piston according to claim 1, wherein the preparation process comprises the following steps: the plastic is polybutylene terephthalate, and the organic filler is molybdenum disulfide.
3. A manufacturing apparatus suitable for the manufacturing process of the piston of the automobile brake master cylinder according to claim 2, wherein: the drying oven comprises a box body (1) with a sealing door, a drying chamber (2) and a hot air circulation pipeline (3), wherein the drying chamber (2) and the hot air circulation pipeline (3) are arranged in the box body (1), a heat preservation layer (4) is arranged in a gap part among the box body (1), the drying chamber (2) and the hot air circulation pipeline (3), an upper inner cavity (11) and a lower inner cavity (12) are respectively arranged inside a top plate (5) of the drying chamber and a bottom plate (6) of the drying chamber, one end of the hot air circulation pipeline (3) is communicated with the lower inner cavity (12), a plurality of vent holes (7) which are respectively communicated with the upper inner cavity (11) and the lower inner cavity (12) are distributed on the opposite sides of the top plate (5) of the drying chamber and the bottom plate (6) of the drying chamber, a circulation fan (8) is arranged in the hot air circulation pipeline (3), and an air outlet end of the circulation fan (8, the drying chamber is characterized in that a plurality of partition plates (16) are arranged in the drying chamber (2), the partition plates (16) are respectively erected on fixing blocks (17) on the inner wall of the drying chamber (2), a plurality of ventilation holes are distributed in the partition plates (16), and heating pipes (18) are arranged on the inner wall of the drying chamber (2).
4. The preparation device of the preparation process of the automobile brake master cylinder piston according to claim 3, wherein: be connected with on heated air circulation pipeline (3) pipe wall and link up air supplement pipe (9) to the outside, air supplement pipe (9) one end just is provided with gulp valve (13) in heated air circulation pipeline (3), gulp pipe (9) partially surround in protection tube (14) in heated air circulation pipeline (3) inside, there is auxiliary heating pipe (15) gulp valve (13) upper end, be connected with safety pipe (20) on drying chamber (2) lateral wall, safety pipe (20) outer end is provided with relief valve (21).
5. The manufacturing device of the manufacturing process of the automobile brake master cylinder piston according to claim 3 or 4, wherein: the drying assembly that is used for dry cycle steam and regeneration is repeated to establish ties on circulation tuber pipe (10), drying assembly is including dry main tank (51) that has airflow inlet and airflow outlet, be connected with moist air current exit tube (52) on dry main tank (51) lateral wall, dry main tank (51) inside is equipped with and is used for drying and the drying portion of deriving by airflow outlet to the steam that gets into in dry main tank (51) via airflow inlet, the drying portion content is equipped with the drier, dry main tank (51) internally mounted has and is used for heating the drier with the moisture evaporation intensification desorption that the drier adsorbs and with the heating device that moisture was derived by moist air current exit tube (52).
6. The preparation device of the preparation process of the automobile brake master cylinder piston according to claim 5, wherein: the drying part comprises a drying pipe (53) with one end communicated with the airflow inlet and filter plates sequentially arranged in the drying pipe (53) at intervals in parallel, coarse silica gel and a 5A molecular sieve drying agent are at least filled among the filter plates, the average pore diameter of the coarse silica gel drying agent is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume zero point is eight to one milliliter per gram, the heating regeneration temperature of the drying agent is one hundred to fifty degrees centigrade, the filling volume proportion of the drying agent in the drying pipe (53) is thirty percent to seventy percent of the coarse silica gel drying agent, the 5A molecular sieve drying agent is seventy percent to thirty percent, the coarse silica gel drying agent is positioned between the filter plates and close to the airflow inlet end side, and the 5A molecular sieve is filled behind the coarse silica gel drying agent.
7. The preparation device of the preparation process of the automobile brake master cylinder piston according to claim 6, wherein: a blocking plate (54) is arranged between the drying pipe (53) and the airflow outlet, a plurality of holes (55) are arranged on the blocking plate (54) in a penetrating way along the circumferential direction, a rotating shaft (56) is rotatably arranged in the middle of the blocking plate (54), the side wall of the rotating shaft (56) is provided with a plurality of rotating blades for controlled rotation around the axis of the rotating shaft (56) so as to simultaneously open or close a plurality of holes (55), a driving motor (57) for driving the rotating shaft (56) to rotate is fixed on the blocking plate (54), an on-off valve (58) is arranged on the moist airflow outlet pipe (52), an electromagnetic reversing valve (59) is arranged at the connecting end of the airflow inlet and the circulating air pipe (10), the drying main box (51) outside is provided with air supply fan (61) and connects air-out pipe (62) at air supply fan (61) air outlet, air-out pipe (62) one end is connected with air current import department.
8. The manufacturing device of the manufacturing process of the automobile brake master cylinder piston according to claim 7, wherein: airflow outlet department is provided with humidity transducer (60), box (1) outside is provided with the controller of being connected with humidity transducer (60) electricity, it has the switching drying subassembly to go up the parallel connection in circulation tuber pipe (10), the switching drying subassembly makes drying subassembly heating regeneration drier and switching steam let in to switching drying subassembly dry or make switching drying subassembly heating regeneration drier and switching steam let in to drying subassembly dry when presetting humidity upper limit value in reaching the controller based on switching drying subassembly drying steam humidity when presetting humidity upper limit value in the controller.
9. The manufacturing device of the manufacturing process of the automobile brake master cylinder piston according to claim 8, wherein: the switching drying component comprises a drying auxiliary box (81) with an inlet and an outlet, a wet air flow auxiliary outlet pipe (82) is connected to the side wall of the drying auxiliary box (81), the electromagnetic directional valve (59) is provided with an inlet end connected with the circulating air pipe (10) and two outlet ends, one of the outlet ends is communicated with the air flow inlet, the other outlet end is communicated with the inlet, an auxiliary drying part used for drying hot air entering the drying auxiliary box (81) through the inlet and led out through the outlet is arranged inside the drying auxiliary box (81), a drying agent is contained in the auxiliary drying part, an auxiliary heating device used for heating the drying agent to evaporate, heat and desorb moisture adsorbed by the drying agent and lead out the moisture from the wet air flow auxiliary outlet pipe (82) is arranged inside the drying auxiliary box (81), and the auxiliary drying part comprises an auxiliary drying pipe (83) with one end communicated with the inlet and filter plates arranged in the auxiliary drying pipe (83) in parallel at intervals in sequence, coarse silica gel and a 5A molecular sieve desiccant are at least filled among the filter plates, wherein the average pore diameter of the coarse silica gel desiccant is eight to ten nanometers, the specific surface area is three hundred to four hundred square meters per gram, the pore volume is zero point eight to one milliliter per gram, the heating regeneration temperature of the desiccant is one hundred to one hundred fifty degrees centigrade, the desiccant filling volume ratio in the auxiliary drying pipe (83) is thirty percent to seventy percent of the coarse silica gel desiccant, the 5A molecular sieve desiccant is seventy percent to thirty percent, the coarse silica gel desiccant is positioned between the filter plates and close to the inlet end side, the 5A molecular sieve is filled behind the auxiliary drying pipe (83), an auxiliary barrier plate (84) is arranged between the auxiliary drying pipe (83) and the outlet, a plurality of auxiliary holes (85) are arranged on the auxiliary barrier plate (84) in a penetrating manner along the circumferential direction, an auxiliary rotating shaft (86) is arranged in the middle of the auxiliary barrier plate (84) in a rotating manner, the air-out electromagnetic switching valve is characterized in that a plurality of auxiliary rotating blades are arranged on the side wall of the auxiliary rotating shaft (86) and used for controllably rotating around the axis of the auxiliary rotating shaft (86) to simultaneously open or close a plurality of auxiliary holes (85), an auxiliary driving motor (87) used for driving the auxiliary rotating shaft (86) to rotate is fixed on the auxiliary blocking plate (84), an auxiliary on-off valve (88) is arranged on the auxiliary humid air flow outlet pipe (82), an air-out electromagnetic switching valve (63) is arranged on the air outlet pipe (62), the air-out electromagnetic switching valve (63) is provided with an air inlet end and two air outlet ends, one air inlet end and one air outlet end are connected in series on the air outlet pipe (62), the other air outlet end is communicated with an inlet through a switching air pipe (64), an auxiliary humidity sensor (90) is arranged at the outlet, the auxiliary humidity sensor (90), the auxiliary driving motor (87), the auxiliary on-, The air outlet electromagnetic switching valve (63), the electromagnetic reversing valve (59), the air supply fan (61), the driving motor (57), the on-off valve (58), the heating device and the auxiliary heating device are respectively and electrically connected with the controller.
10. A drying method for using the manufacturing device for the manufacturing process of the automobile brake master cylinder piston according to claim 9, comprising the following steps:
1) and drying for use: when in use, the raw material to be dried can be placed on the division plate (16) to be dried or the division plate (16) is pumped out to be dried in the original container of the raw material according to the requirement, air is heated by the heating pipe (18) to dry the raw material, the drying temperature is controlled to be sixty to seventy ℃, the circulating fan (8) enables hot air to enter the lower inner cavity (12) from a plurality of vent holes (7) on the bottom plate (6) of the drying chamber and enter the hot air circulating pipeline (3) under the working state of the circulating fan (8), the hot air enters the drying pipe (53) through the circulating air pipe (10) and the air flow inlet at the air outlet end of the circulating fan (8), coarse silica gel and 5A molecular sieve drying agents are at least filled between a plurality of filter plates, and the hot air is guided out to the upper inner cavity (11) from the air flow outlet after being respectively adsorbed and dried by the coarse silica gel drying agents and the 5, the air passes through a plurality of partition plates (16) from the top of the drying chamber (2) downwards again through a plurality of vent holes (7) from top to bottom and then is heated and dried repeatedly at a heating pipe (18) for circulation;
2) and detection and regeneration: when a humidity sensor (60) senses that the humidity in hot air dried by a drying part reaches an upper limit value M of the preset humidity in the controller in real time, the controller respectively transmits an electric signal to an electromagnetic directional valve (59), an on-off valve (58), a heating device, a driving motor (57), an air supply fan (61) and an air outlet electromagnetic directional valve (63), the electromagnetic directional valve (59) is switched into a circulating air pipe (10) to be communicated with an inlet, the hot air enters an auxiliary drying pipe (83) through the circulating air pipe (10) and the inlet, the hot air is guided out of an upper inner cavity (11) from an outlet after being adsorbed and dried by a coarse silica gel desiccant and a 5A molecular sieve desiccant respectively, passes through a plurality of partition plates (16) from the top of a drying chamber (2) downwards through a plurality of vent holes (7) from top to bottom and then is heated and dried again at a heating pipe (18) for circulation, after the hot air switching cycle, an on-off valve (58) arranged on a wet air flow outlet pipe (52) is opened, a heating device in a drying main box (51) operates to raise the temperature in the drying main box (51) to between one hundred and fifty ℃, a driving motor (57) operates, a rotating shaft (56) rotates and drives a plurality of rotating blades to simultaneously close a plurality of holes (55), an air outlet electromagnetic switching valve (63) is switched into an air inlet end and an air outlet end which are connected in series on an air outlet pipe (62) and an air supply fan (61) operates, air is supplied into a drying pipe (53) through the air outlet pipe (62), the coarse silica gel desiccant and a 5A molecular sieve desiccant complete activation and regeneration through heating and appropriate ventilation, moisture and impurities occluded in the desiccant are simultaneously desorbed and carried out of the drying main box (51) to regenerate the desiccant, then the heating device stops heating, the air supply fan (61) correspondingly increases the rotating speed to work, normal-temperature air is supplied in an accelerated mode to cool the high-temperature drying agent, the activity of the drying agent is recovered, then the air supply fan (61) stops working, the driving motor (57) runs, the rotating shaft (56) rotates and drives the rotating blades to open the holes (55) at the same time, and the on-off valve (58) arranged on the humid airflow outlet pipe (52) is closed;
3) and switching regeneration: when an auxiliary humidity sensor (90) senses that the humidity in hot air dried by an auxiliary drying part reaches an upper limit value M of the humidity preset in the controller in real time, the controller respectively transmits an electric signal to an electromagnetic directional valve (59), an auxiliary on-off valve (88), an auxiliary heating device, an auxiliary driving motor (87), an air supply fan (61) and an air outlet electromagnetic switching valve (63), the electromagnetic directional valve (59) is switched into a circulating air pipe (10) to be communicated with an air flow inlet, so that the hot air enters a drying pipe (53) through the circulating air pipe (10) and the air flow inlet, the hot air is respectively adsorbed and dried by a coarse-pore silica gel drying agent and a 5A molecular sieve drying agent, is guided out to an upper inner cavity (11) from an outlet, passes through a plurality of partition plates (16) from the top of a drying chamber (2) downwards from top to bottom through a plurality of vent holes (7) and then is repeatedly heated and dried at a, circulating, after hot gas switching circulation, an auxiliary on-off valve (88) arranged on an auxiliary wet air flow outlet pipe (82) is opened, an auxiliary heating device in an auxiliary drying box (81) operates to raise the temperature in the auxiliary drying box (81) to between one hundred and fifty ℃, an auxiliary driving motor (87) operates, an auxiliary rotating shaft (86) rotates and drives a plurality of auxiliary rotating blades to simultaneously close a plurality of auxiliary holes (85), an air outlet electromagnetic switching valve (63) is switched into an air inlet end which is communicated with an inlet through a switching air pipe (64), an air supply fan (61) operates, air is supplied into an auxiliary drying pipe (83) through an air outlet pipe (62) and a switching air pipe (64), the coarse silica gel drying agent and a 5A molecular sieve drying agent complete activation and regeneration through heating and appropriate ventilation, moisture and impurities occluded in the drying agent are simultaneously desorbed and are carried out of the auxiliary drying box (81), the drying agent is regenerated, then the auxiliary heating device stops heating, the air supply fan (61) correspondingly increases the rotating speed to work, normal-temperature air is supplied in an accelerated mode to cool and cool the high-temperature drying agent, the activity of the drying agent is recovered, then the air supply fan (61) stops working, the auxiliary driving motor (87) runs, the auxiliary rotating shaft (86) rotates and drives a plurality of auxiliary rotating blades to simultaneously open a plurality of auxiliary holes (85), and an auxiliary on-off valve (88) arranged on the wet airflow auxiliary outlet pipe (82) is closed;
4) and repeating the cycle detection and regeneration: in the process of drying raw materials by the oven, the humidity of hot air dried in the working process of the main drying box (51) and the auxiliary drying box (81) is kept to be detected in real time through the humidity sensor (60) and the auxiliary humidity sensor (90), and a detection value is transmitted to the controller, and the controller respectively and correspondingly repeats the step (2) and the step (3) according to humidity data fed back by the humidity sensor (60) and the auxiliary humidity sensor (90);
5) and finishing drying: and after the raw materials are dried for preset half an hour to one hour, stopping the operation of the circulating fan (8), stopping the operation and heating of the heating pipe (18), and then taking out the dried raw materials on the partition plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011159281.7A CN112406057A (en) | 2020-10-26 | 2020-10-26 | Preparation process of automobile brake master cylinder piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011159281.7A CN112406057A (en) | 2020-10-26 | 2020-10-26 | Preparation process of automobile brake master cylinder piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112406057A true CN112406057A (en) | 2021-02-26 |
Family
ID=74840710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011159281.7A Pending CN112406057A (en) | 2020-10-26 | 2020-10-26 | Preparation process of automobile brake master cylinder piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112406057A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113747754A (en) * | 2021-08-17 | 2021-12-03 | 武汉船用机械有限责任公司 | Automatic change control box |
| CN115818578A (en) * | 2022-11-17 | 2023-03-21 | 中国直升机设计研究所 | Molecular sieve regeneration system and method for oxygen generation of helicopter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425546A (en) * | 2003-01-09 | 2003-06-25 | 玉环县金峰实业有限公司 | Use of plastic to produce automobile brake main cylinder piston and process |
| CN102218255A (en) * | 2010-04-16 | 2011-10-19 | 李俊仁 | Drier and drying and regenerating method of drier |
| CN104215041A (en) * | 2014-09-02 | 2014-12-17 | 浙江朗博药业有限公司 | Moisture absorption hot air circular drying oven |
| CN204019791U (en) * | 2014-07-31 | 2014-12-17 | 威海柳道机械有限公司 | A kind of EGR of the plastic raw materials removal moisture drying stronger for hygroscopicity |
| WO2015165313A1 (en) * | 2014-04-30 | 2015-11-05 | 广东工业大学 | Adsorption dehumidification process method and apparatus |
| CN209991670U (en) * | 2019-02-26 | 2020-01-24 | 石家庄市丰强动物药业有限公司 | Deodorizing device for hot air circulation oven |
-
2020
- 2020-10-26 CN CN202011159281.7A patent/CN112406057A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1425546A (en) * | 2003-01-09 | 2003-06-25 | 玉环县金峰实业有限公司 | Use of plastic to produce automobile brake main cylinder piston and process |
| CN102218255A (en) * | 2010-04-16 | 2011-10-19 | 李俊仁 | Drier and drying and regenerating method of drier |
| WO2015165313A1 (en) * | 2014-04-30 | 2015-11-05 | 广东工业大学 | Adsorption dehumidification process method and apparatus |
| CN204019791U (en) * | 2014-07-31 | 2014-12-17 | 威海柳道机械有限公司 | A kind of EGR of the plastic raw materials removal moisture drying stronger for hygroscopicity |
| CN104215041A (en) * | 2014-09-02 | 2014-12-17 | 浙江朗博药业有限公司 | Moisture absorption hot air circular drying oven |
| CN209991670U (en) * | 2019-02-26 | 2020-01-24 | 石家庄市丰强动物药业有限公司 | Deodorizing device for hot air circulation oven |
Non-Patent Citations (2)
| Title |
|---|
| 郭凝: "《城市轨道交通车辆机械检修》", 28 February 2013, 上海：上海科学技术出版社 * |
| 高福麒: "《工业包装技术》", 31 August 1982, 新时代出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113747754A (en) * | 2021-08-17 | 2021-12-03 | 武汉船用机械有限责任公司 | Automatic change control box |
| CN113747754B (en) * | 2021-08-17 | 2023-06-23 | 武汉船用机械有限责任公司 | Automatic change control box |
| CN115818578A (en) * | 2022-11-17 | 2023-03-21 | 中国直升机设计研究所 | Molecular sieve regeneration system and method for oxygen generation of helicopter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112406057A (en) | Preparation process of automobile brake master cylinder piston | |
| KR100609840B1 (en) | Compressed air dryer for recycling heat by blower | |
| CN201470290U (en) | Zero gas-consuming blasting thermal-regeneration absorption type dryer | |
| CN204911174U (en) | Adsorption dryer is retrieved to regeneration gas | |
| CN101561217A (en) | Method and device for drying material in vacuum | |
| CN102401430A (en) | Refrigeration and rotating wheel adsorption coupling operated dehumidification device | |
| CN101408369A (en) | Method and device for rapid vacuum drying of material | |
| CN112212632A (en) | Preparation device for automobile brake master cylinder piston | |
| CN208012245U (en) | A kind of more barrel type dehumidification devices of dividing movement | |
| CN219563821U (en) | Three integrative dehumidification drying equipment of cellular | |
| CN201311163Y (en) | No-thermal dehumidifier | |
| CN204193755U (en) | A kind of rotary-type mould dehumidifier | |
| KR100806574B1 (en) | Apparatus for dehumidifying synthetic plastic raw material by using dry air | |
| CN203489633U (en) | Solar energy auxiliary heat pump drying system | |
| CN108284538B (en) | Dehumidification dryer and dehumidification method for dehumidification by using waste heat of thermoplastic molding | |
| CN105671216A (en) | Low-temperature dehumidifying and drying system for leather | |
| CN211345599U (en) | Vertical rotary dehumidifier | |
| CN105202877B (en) | A kind of many barrels of molecular sieve runner intermittent circulating type dehumidifying heat pumps | |
| CN212849341U (en) | Rotating wheel dehumidification device applied to power equipment | |
| CN209415623U (en) | A kind of rotary dehumidifier of Automatic Control | |
| CN112284061A (en) | Preparation device for preparation process of automobile brake master cylinder piston | |
| CN105588235A (en) | Rotary dehumidification air conditioning unit capable of preventing frost cracks of surface air cooler and use method of rotary dehumidification air conditioning unit | |
| CN204911172U (en) | Adsorption dryer is retrieved to power type variable blast volume regeneration gas | |
| CN219563952U (en) | Three-section material sucking type dehumidifying and drying feeder | |
| CN205700061U (en) | A kind of absorption drier front end refrigeration and regeneration gas reclaim heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210226 |
|
| RJ01 | Rejection of invention patent application after publication |