Sectional type vacuum drying equipment

Abstract

The invention discloses sectional type vacuum drying equipment, and relates to the technical field of drying equipment, the equipment comprises a conveying line, a heat pump unit, a cleaning unit, a vacuum drying unit and an air supply unit; the conveying unit continuously conveys parts to be cleaned, the parts are cleaned in a full-surrounding mode through the cleaning unit and the high-pressure cleaning module in sequence, a shielding door which is independently opened and closed is arranged to reduce external pollution, and the vacuum drying unit conducts short-time vacuum heating on the parts through a vacuum module, a cover door and heating fins of the heat pump unit. The air supply unit is connected with the air supply end of the vacuum module, cooling is conducted through refrigeration fins of the heat pump unit, and cold air for drying and dewatering is used for conducting secondary drying on the parts and reducing the temperature of the parts. Integrated continuous operation of cleaning, vacuum drying and cold air drying is achieved, the part drying efficiency and uniformity are improved, the overall energy consumption of the cleaning and drying links is reduced, and the device is suitable for batch production operation of automobile parts.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, and particularly relates to a segmented vacuum drying equipment. Background Art

[0002] In the manufacturing process of automotive parts, the processing of parts often uses subtractive manufacturing processes (such as milling, turning, grinding, etc.), which may cause machining debris to remain on the surface or inside the cavity of the parts; to ensure product quality, the debris needs to be removed by ultrasonic cleaning, followed by washing and drying.

[0003] However, in the prior art, the washing and drying steps are usually completed by independent equipment, and there are the following technical bottlenecks:

[0004] (1) Inefficiency caused by equipment separation: In the traditional process, parts need to pass through a washing equipment and a drying equipment in sequence, the process is interrupted frequently, the equipment switching is time-consuming, and personnel are required to transport the parts in the middle; especially in the high-volume scenario of automotive parts, the processing speed of independent equipment is difficult to match the production rhythm, which is likely to cause accumulation between processes and affect the overall production efficiency.

[0005] (2) Limitations of drying technology

[0006] Hot air drying: High energy consumption, poor drying uniformity, and moisture may remain in some areas.

[0007] Vacuum drying: Although it can reduce the drying temperature and reduce the oxidation risk, the existing vacuum drying equipment has a complex structure, high maintenance cost, and mostly adopts a single cavity design, which cannot achieve continuous processing and is difficult to meet the large-scale production requirements.

[0008] Ultrasonic-assisted drying: Although it can accelerate the water separation, the equipment needs to be physically isolated from the cleaning step, otherwise it may cause secondary pollution due to the remaining cleaning liquid.

[0009] (3) Conflict between cleanliness and dryness

[0010] If the cleaning liquid is not completely removed in the cleaning step, the remaining chemical substances may form crystals or corrosive substances during the drying process, affecting the quality of the parts, and the parts are prone to wear, corrosion and other defects during use; and the existing equipment lacks an integrated design, and there are blind spots in the connection between the cleaning and drying steps, which are likely to cause cross-contamination or incomplete drying.

[0011] (4) Energy consumption problem

[0012] Traditional drying equipment (such as hot air drying) has high energy consumption and lacks a heat recovery mechanism, which does not conform to the trend of green manufacturing; although some vacuum drying equipment can reduce energy consumption, the treatment of condensed water vapor is not thorough, which may cause waste of resources.

[0013] Problems of the prior art:

[0014] The cleaning and drying processes of the equipment are separated, resulting in low equipment switching efficiency and difficulty in meeting high production demands; existing drying technologies (such as hot air and vacuum drying) have significant deficiencies in terms of energy consumption, processing speed, and uniformity; the lack of an integrated design makes it difficult to synergistically optimize cleanliness and dryness, and there is a risk of secondary pollution.

[0015] Therefore, there is an urgent need to develop a segmented vacuum drying equipment that integrates cleaning and drying functions. Through process optimization and technological innovation, efficient and continuous processing can be achieved while taking into account energy conservation, environmental protection, and quality control requirements.

[0016] In summary, it is found that the prior art has at least the following technical problems:

[0017] Existing parts cleaning and drying equipment has technical problems such as low cleaning and drying efficiency, uneven drying, and high energy consumption. Summary of the Invention

[0018] The purpose of the present invention is to provide a segmented vacuum drying equipment to solve the technical problems of existing parts cleaning and drying equipment, such as low cleaning and drying efficiency, uneven drying, and high energy consumption.

[0019] The many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided by the present invention are described in detail below.

[0020] To solve the above technical problems, the present invention provides the following technical solutions:

[0021] The present invention provides a segmented vacuum drying device, which includes a conveyor line for conveying parts to be cleaned and a heat pump unit; and along the direction of conveying parts on the conveyor line, a cleaning unit, a vacuum drying unit and a blowing unit are sequentially provided; independent opening and closing shielding doors are provided before and after the cleaning unit, and a high-pressure cleaning module that completely surrounds the parts is provided in the middle; the vacuum drying unit is provided with a vacuum module and a cover door that can be closed or opened; the vacuum module is provided with a first air suction end, a second air suction end and an air supply end, and the gases sucked by the first air suction end and the second air suction end are collected and sent out from the air supply end; the first air suction end sucks the air in the open space; the second air suction end is connected to the cover door, and heating fins of the heat pump unit are provided within the range covered by the cover door; the blowing unit is connected to the air supply end; the refrigerating fins of the heat pump unit are arranged in the vacuum module and are used for refrigerating and drying and dehydrating the gases collected at the air supply end, and transferring the heat to the heating fins; through the cleaning unit, the parts are isolated for high-pressure cleaning to remove residual debris and cleaning liquid on the surface, the vacuum drying unit performs short-time vacuum heating on the parts, quickly evaporates and sucks away the moisture on the surface of the parts to perform primary drying, and the blowing unit blows dry cold air on the parts to quickly reduce the temperature of the parts and perform secondary drying.

[0022] In one embodiment, it further includes a production line stand, and the conveyor line is installed on the production line stand; the conveyor line adopts a powered roller conveyor structure.

[0023] In one embodiment, the shielding door includes a first gate and a second gate; along the direction of conveying parts, the first gate and the second gate are sequentially arranged on the conveyor line, the first gate is arranged in the front, and the second gate is arranged in the back; the second gate is arranged adjacent to the cover door; the high-pressure cleaning module is arranged in a manner of moving between the first gate and the second gate.

[0024] In one embodiment, the cleaning unit further includes a first driving cylinder, a first guide rod, a second driving cylinder, and a second guide rod; the first driving cylinder, the first guide rod, the second driving cylinder, the second guide rod, the first gate, and the second gate are all mounted above the conveyor line; the first driving cylinder and the first guide rod are connected to the top end of the first gate, and the first driving cylinder drives the first gate to move up and down along the guidance of the first guide rod towards the conveyor line for opening or closing the conveyor line; the second driving cylinder and the second guide rod are connected to the top end of the second gate, and the second driving cylinder drives the second gate to move up and down along the guidance of the second guide rod towards the conveyor line for opening or closing the conveyor line; the high-pressure cleaning module includes a translation cylinder, a translation guide rail, and a square cleaning pipe loop; the translation cylinder, the translation guide rail, and the cleaning pipe loop are all mounted above the conveyor line, and the cleaning pipe loop surrounds the outside of the conveyor line. The slide of the translation cylinder is connected to the installation side of the cleaning pipe loop and the slider of the translation guide rail; on the inner side of the cleaning pipe loop facing the conveyor line, a plurality of high-pressure nozzles are evenly arranged in the up-down, left-right directions.

[0025] In one embodiment, the vacuum module is mounted on the ground; the cover door includes an upper cover and a lower cover; the upper cover is mounted above the conveyor line in a liftable manner; the lower cover is installed below the conveyor line and surrounds the lower side of the conveyor line; the lower cover is connected to the second suction end of the vacuum module; the heating fins are arranged on opposite sides in the conveying direction of the conveyor line and are located between the conveyor line and the side of the lower cover.

[0026] In one embodiment, a sealing frame is provided between the upper cover and the lower cover; in the plane, the sealing frame surrounds the part of the conveyor line located in the vacuum drying unit; in the vertical direction, the position of the sealing frame is lower than the surface where the roller of the conveyor line contacts the part; the lower cover is hermetically connected to the sealing frame and is fixed; when the part conveyed by the conveyor line reaches the area covered by the lower cover, the upper cover descends to surround the upper side of the conveyor line and engages with the sealing frame to form a seal.

[0027] In one embodiment, the vacuum drying unit further includes a third driving cylinder and a third guide rod, and the third driving cylinder and the third guide rod are both mounted above the conveyor line; the third driving cylinder and the third guide rod are connected to the top end of the upper cover, and the third driving cylinder drives the upper cover to move up and down along the guidance of the third guide rod towards the sealing frame for opening or covering the part conveyed by the conveyor line into the vacuum drying unit.

[0028] In one embodiment, the air supply unit includes a cooling hood and a cold air duct. The cooling hood is spanned across the conveyor line, and the cold air duct connects the cooling hood and the air supply end. The cooling hood is provided with a cooling channel along the direction in which the conveyor line conveys parts. Air supply plates are arranged on both sides inside the cooling channel, and a flow guide plate is arranged at the top inside the cooling channel. The flow guide plate inclines from the center to the air supply plates on both sides. An air duct opening communicating with the inside of the cooling channel is arranged at the top of the cooling hood, and the air duct opening is connected to the cold air duct.

[0029] In one embodiment, a first flow channel, a second flow channel, and a collecting flow channel are provided inside the vacuum module. The collecting flow channel is provided with a collecting end and an independent end. One end of the first flow channel is connected to the first suction end, one end of the second flow channel is connected to the second suction end, the other ends of the first flow channel and the second flow channel are connected to the collecting end of the collecting flow channel, and the independent end of the collecting flow channel is connected to the air supply end. A plurality of refrigeration fins are provided on the heat pump unit. A plurality of cooling chambers are arranged on the collecting flow channel, and the refrigeration fins are arranged in all the plurality of cooling chambers.

[0030] In one embodiment, the vacuum module further includes a drain pipe. A plurality of drain ports are arranged on the collecting flow channel. The drain ports are arranged at the bottom of the cooling chamber, and the plurality of drain ports are connected in parallel to the drain pipe for draining the condensed water sliding off the refrigeration fins.

[0031] The beneficial effects of the present invention are as follows:

[0032] The technical solution provided by the present invention is specifically a segmented vacuum drying device. Aiming at the problems of low cleaning and drying efficiency, uneven drying, high energy consumption, etc. existing in the existing parts cleaning and drying equipment, an integrated solution is proposed. Among them, it mainly consists of a conveyor line for conveying parts to be cleaned, a heat pump unit for carrying heat and assisting in drying, and a cleaning unit, a vacuum drying unit, and an air supply unit arranged in sequence along the direction in which the conveyor line conveys parts.

[0033] Specifically, the conveyor line continuously feeds parts into the cleaning unit, the vacuum drying unit, and the air supply unit in sequence. The cleaning unit isolates the parts for high-pressure cleaning to remove residual debris and cleaning liquid on the surface, the vacuum drying unit performs short-time vacuum heating on the parts, quickly evaporates and sucks away the moisture on the surface of the parts to perform primary drying, and the air supply unit blows dry cold air on the parts to quickly reduce the temperature of the parts and perform secondary drying.

[0034] The technical solution of the segmented vacuum drying device is particularly suitable for the efficient removal and drying of surface moisture of automotive parts after cleaning, and has the following advantages:

[0035] (1) Improve cleaning and drying efficiency

[0036] Via the conveyor line that can continuously transport parts, the cleaning unit, the vacuum drying unit, and the air supply unit are connected in series to achieve integrated cleaning and drying operations. There is no need to transfer parts between different devices, greatly improving production efficiency. In the cleaning unit, the high-pressure cleaning module performs full-enclosure cleaning on parts to ensure that debris and cleaning liquid are completely removed, reducing the burden on subsequent drying processes. In the vacuum drying unit and the air supply unit, the combined method of short-time vacuum heating drying + cold air cooling secondary drying makes the drying of parts faster, more uniform, and more thorough. Moreover, through the separate cleaning of the cleaning unit, the vacuum drying unit, and the air supply unit, the overall rhythm of the cleaning production line can meet the part cleaning requirements in large-scale production of parts.

[0037] (2) The vacuum drying unit and the air supply unit perform secondary drying on parts to improve drying uniformity

[0038] The vacuum drying unit heats the parts sent to under the hood door by the conveyor line through the vacuum module + the heating fins of the heat pump unit, closes the parts through the hood door, and evenly heats the parts inside the hood door. Utilizing the vacuum environment to quickly raise the temperature, through the combined action of air pressure and temperature, the moisture on the surface of the parts is quickly vaporized, thereby evaporating the moisture on the surface of the parts, and quickly sucking away the steam through the suction end of the vacuum module to prevent the moisture on the surface of the parts from reattaching and condensing.

[0039] The air supply unit blows cold air that has been cooled and dehydrated and dried by the refrigeration fins of the heat pump unit to the parts entering the air supply unit, performing secondary drying while reducing the temperature of the parts, effectively removing possible residual trace moisture and humidity, ensuring that the parts are thoroughly and evenly dried without affecting subsequent assembly or painting processes.

[0040] (3) Reduce energy consumption

[0041] The heat pump unit is used to accelerate the drying of parts and reduce energy consumption. Traditional drying equipment usually adopts the hot air circulation method, which is prone to energy waste. However, this equipment uses vacuum drying + cold air drying, which can not only speed up the drying speed but also reduce heat loss.

[0042] The refrigeration fins are used to condense and remove the moisture from the mixed gas of the air in the open space and the steam in the hood door inhaled through the first suction end and the second suction end, producing dry gas with extremely low humidity and low temperature, and performing secondary drying on the parts entering the air supply unit. At the same time, since the mixed gas contains the air in the open space and the steam in the hood door and has higher thermal energy, the refrigeration fins can transfer more heat to the heating fins. Through the mutual integration of the heat pump unit, the vacuum drying unit and the air supply unit, as well as the recycling of heat and the cooperation of drying, the energy utilization rate can be greatly improved, and the energy consumption can be significantly reduced compared with the traditional heating method.

[0043] (4) Reduce the accumulation of parts and match the production rhythm

[0044] The segmented vacuum drying equipment conveys parts through the conveyor line, and through the coordinated rhythmic actions of the cleaning unit, the vacuum drying unit and the air supply unit, it implements a cleaning and drying mode of continuous conveying, continuous cleaning and continuous drying of parts, without manual handling, reducing the residence time of parts between different processes, avoiding accumulation, and improving the smoothness of the overall production line.

[0045] In summary, the segmented vacuum drying equipment of the present invention integrates the functions of cleaning, vacuum heating drying and air supply cooling drying through the segmented vacuum drying structure, solves the technical problems of low cleaning and drying efficiency, uneven drying and high energy consumption existing in the existing parts cleaning and drying equipment, and through continuous conveying of parts for cleaning and drying operations, the rhythmic operation mode of high-speed continuous operation of the segmented vacuum drying equipment is suitable for the efficient cleaning and drying of a large number of automotive parts. Description of the Drawings

[0046] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for implementation will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0047] Figure 1 It is an overall axonometric structural schematic diagram of the segmented vacuum drying equipment of the present invention;

[0048] Figure 2 It is a top view structural schematic diagram of the segmented vacuum drying equipment of the present invention;

[0049] Figure 3 It is an axonometric structural schematic diagram of the segmented vacuum drying equipment of the present invention;

[0050] Figure 4It is an axonometric partial enlarged view of the cleaning unit and the vacuum drying unit of the present invention;

[0051] Figure 5 It is an axonometric structural schematic diagram of the cooling cover of the present invention;

[0052] Figure 6 It is a structural schematic diagram of the first flow channel, the second flow channel and the collecting flow channel of the vacuum module of the present invention.

[0053] Among them, the reference numerals are as follows:

[0054] 1. Conveyor line;

[0055] 2. Heat pump unit; 21. Heating fins; 22. Refrigerating fins; 23. Condensate tank; 24. Compressor unit;

[0056] 3. Cleaning unit; 31. Shield door; 311. First gate; 312. First driving cylinder; 313. First guide rod; 314. Second gate; 315. Second driving cylinder; 316. Second guide rod; 32. High-pressure cleaning module; 321. Translation cylinder; 322. Translation guide rail; 33. Cleaning pipe coil; 331. High-pressure nozzle;

[0057] 4. Vacuum drying unit;

[0058] 5. Vacuum module; 51. First suction end; 52. Second suction end; 53. Air supply end; 54. First flow channel; 55. Second flow channel; 56. Collecting flow channel; 561. Collecting end; 562. Independent end; 563. Cooling chamber; 564. Drainage port; 57. Drain pipe;

[0059] 6. Cover door; 61. Upper cover; 62. Lower cover; 63. Third driving cylinder; 64. Third guide rod;

[0060] 7. Air supply unit; 71. Cooling cover; 711. Cooling channel; 712. Air supply plate; 713. Deflector; 714. Air duct opening; 72. Cold air duct;

[0061] 8. Production line stand;

[0062] 9. Parts;

[0063] 10. Control cabinet. Detailed implementation manners

[0064] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0065] In view of this, a segmented vacuum drying device is provided in the specific implementation manner. The device includes a conveying line, a heat pump unit, a cleaning unit, a vacuum drying unit, and a air supply unit; the conveying unit continuously conveys the parts to be cleaned, and successively passes through the cleaning unit to perform a full-enclosure cleaning of the parts by a high-pressure cleaning module, and is provided with a shielding door that can be independently opened and closed to reduce external pollution. The vacuum drying unit uses a vacuum module, a cover door, and the heating fins of the heat pump unit to perform short-time vacuum heating on the parts, quickly evaporate and suck away the moisture on the surface of the parts to perform primary drying. The air supply unit is connected to the air supply end of the vacuum module, and uses the cooling fins of the heat pump unit to cool down and dry and dehydrate the cold air to perform secondary drying on the parts and reduce the temperature of the parts; realizing the integrated continuous operation of cleaning, vacuum drying, and cold air drying, improving the drying efficiency and uniformity of the parts, and reducing the overall energy consumption of the cleaning and drying links, which is applicable to the batch production operation of automobile parts; effectively solving the technical problems of the existing parts cleaning and drying equipment, such as low cleaning and drying efficiency, uneven drying, and high energy consumption.

[0066] Figure 1 It is an overall axonometric structure schematic diagram of the segmented vacuum drying device of the present invention; Figure 2 It is a top view structure schematic diagram of the segmented vacuum drying device of the present invention; Figure 3 It is an axonometric structure schematic diagram of the segmented vacuum drying device of the present invention.

[0067] The first embodiment of the segmented vacuum drying device is as Figures 1 to 3 shown, including a conveying line 1 for conveying the parts 9 to be cleaned and a heat pump unit 2; and along the conveying direction of the parts 9 on the conveying line 1, a cleaning unit 3, a vacuum drying unit 4, and an air supply unit 7 are successively provided; independent shielding doors 31 that can be opened and closed are provided before and after the cleaning unit 3, and a high-pressure cleaning module 32 that fully surrounds the parts 9 is provided in the middle; the vacuum drying unit 4 is provided with a vacuum module 5 and a cover door 6 that can be sealed or opened; the vacuum module 5 is provided with a first suction end 51, a second suction end 52, and an air supply end 53, and the gases sucked by the first suction end 51 and the second suction end 52 are collected and sent out through the air supply end 53; the first suction end 51 sucks the air in the open space; the second suction end 52 is connected to the cover door 6, and heating fins 21 of the heat pump unit 2 are provided within the range covered by the cover door 6; the air supply unit 7 is connected to the air supply end 53; the cooling fins 22 of the heat pump unit 2 are provided in the vacuum module 5, and are used for refrigerating and drying and dehydrating the gas collected at the air supply end 53, and transferring the heat to the heating fins 21; by isolating the parts 9 through the cleaning unit 3 to perform high-pressure cleaning to remove the residual debris and cleaning liquid on the surface, the vacuum drying unit 4 performs short-time vacuum heating on the parts 9, quickly evaporates and sucks away the moisture on the surface of the parts 9 to perform primary drying, and the air supply unit 7 blows dry cold air on the parts 9, quickly reducing the temperature of the parts 9 and performing secondary drying.

[0068] Regarding the installation method and specific conveying structure of the above-mentioned conveying line 1, as shown in this embodiment Figure 1 as shown, it further includes a production line platform 8, and the conveying line 1 is installed on the production line platform 8; the conveying line 1 adopts a powered roller conveying structure.

[0069] Among them, in order to enable the heat pump unit 2 to have the heat transfer function of rapid heating and cooling, as shown in this embodiment Figure 1 and Figure 2 as shown, the heat pump unit 2 is further equipped with a refrigerant tank 23 for loading at least 1 cubic meter of refrigerant and an independently arranged compressor unit 24.

[0070] The segmented vacuum drying equipment is also provided with a control cabinet 10, and the control cabinet 10 is electrically connected to the conveying line 1, the heat pump unit 2, the cleaning unit 3, the vacuum drying unit 4 and the air supply unit 7. The conveying line 1, the heat pump unit 2, the cleaning unit 3, the vacuum drying unit 4 and the air supply unit 7 are coordinately controlled through the PLC (Programmable Logic Controller) module in the control cabinet 10 and its built-in program.

[0071] In view of the problems existing in the existing parts cleaning and drying equipment, such as low cleaning and drying efficiency, uneven drying, high energy consumption, etc., an integrated solution is proposed, that is: a segmented vacuum drying equipment.

[0072] Specifically, the parts 9 are continuously sent into the cleaning unit 3, the vacuum drying unit 4 and the air supply unit 7 in sequence through the conveying line 1. The parts 9 enter in sequence. The cleaning unit 3 isolates the parts 9 and performs high-pressure cleaning to remove residual debris and cleaning liquid on the surface. The vacuum drying unit 4 performs short-time vacuum heating on the parts 9, quickly evaporates and sucks away the moisture on the surface of the parts 9 to perform primary drying. The air supply unit 7 blows dry cold air on the parts 9, quickly reduces the temperature of the parts 9 and performs secondary drying.

[0073] Therefore, the technical solution of the segmented vacuum drying equipment is especially suitable for the efficient removal and drying of surface moisture of automotive parts after cleaning, and has the following advantages:

[0074] The segmented vacuum drying equipment improves the efficiency of the entire process of cleaning and drying parts 9: Through the conveyor line 1 that can continuously transport parts 9, the cleaning unit 3, the vacuum drying unit 4, and the air supply unit 7 are connected in series to achieve integrated cleaning and drying operations. There is no need to transfer parts 9 between different devices, greatly improving production efficiency. In the cleaning unit 3, the high-pressure cleaning module 32 performs full-surround cleaning on parts 9 to ensure that debris and cleaning liquid are completely removed, reducing the burden on the subsequent drying link. In the vacuum drying unit 4 and the air supply unit 7, the combined method of short-time vacuum heating and drying + cold air cooling for secondary drying makes the drying of parts 9 faster, more uniform, and more thorough. Moreover, through the separate cleaning of the cleaning unit 3, the vacuum drying unit 4, and the air supply unit 7, the overall rhythm of the cleaning production line can meet the cleaning requirements of parts 9 in large-scale production of components.

[0075] The vacuum drying unit 4 and the air supply unit 7 perform secondary drying on parts 9 to improve drying uniformity: The vacuum drying unit 4 heats the parts 9 sent under the hood door 6 by the conveyor line 1 through the vacuum module 5 + the heating fins 21 of the heat pump unit 2, closes them through the hood door 6, and evenly heats the parts 9 inside the hood door 6. Utilizing the vacuum environment to quickly raise the temperature, through the combined action of air pressure and temperature, the moisture on the surface of parts 9 is quickly vaporized, so that the moisture on the surface of parts 9 is evaporated, and the steam is quickly drawn away through the suction end of the vacuum module 5 to prevent the moisture on the surface of parts 9 from reattaching and condensing.

[0076] The air supply unit 7 uses cold air that is cooled and dehydrated and dried by the refrigeration fins 22 of the heat pump unit 2 to blow parts 9 entering the air supply unit 7, performing secondary drying while reducing the temperature of parts 9, effectively removing possible residual trace moisture and moisture, ensuring that parts 9 are dried thoroughly and evenly without affecting subsequent assembly or painting processes.

[0077] Reduce energy consumption: The heat pump unit 2 accelerates the drying of parts 9 and reduces energy consumption. Traditional drying equipment usually adopts the hot air circulation method, which is prone to energy waste. However, this equipment uses vacuum drying + cold air drying, which can not only speed up the drying speed but also reduce heat loss.

[0078] The refrigeration fins 22 are used to condense and remove the moisture of the mixed gas of the air in the open space and the steam in the hood door 6 sucked in through the first suction end 51 and the second suction end 52, creating a dry gas with extremely low humidity and low temperature to perform secondary drying on the parts 9 entering the air supply unit 7. At the same time, because the mixed gas contains the air in the open space and the steam in the hood door 6 and has higher thermal energy, the refrigeration fins 22 can transfer more heat to the heating fins 21. Through the mutual embedding of the heat pump unit 2 with the vacuum drying unit 4 and the air supply unit 7, and the recycling of heat and coordinated drying, the energy utilization rate can be greatly improved, and the energy consumption can be significantly reduced compared with the traditional heating method.

[0079] Reduce the accumulation of parts, match the production rhythm, and improve the turnover efficiency of part 9 in the production workshop: The segmented vacuum drying equipment conveys part 9 through the conveyor line 1, and through the coordinated rhythm actions of the cleaning unit 3, the vacuum drying unit 4, and the air supply unit 7, it implements a cleaning and drying mode of continuously conveying, continuously cleaning, and continuously drying part 9, without manual handling, reducing the residence time of part 9 between different processes, avoiding accumulation, and improving the smoothness of the overall production line.

[0080] The segmented vacuum drying equipment integrates the functions of cleaning, vacuum heating and drying, and air supply cooling and drying through a segmented vacuum drying structure, solves the technical problems of existing parts cleaning and drying equipment, such as low cleaning and drying efficiency, uneven drying, and high energy consumption, and through continuous conveying of part 9 for cleaning and drying operations, the segmented vacuum drying equipment's high-speed continuous operation rhythm operation mode is suitable for the efficient cleaning and drying of a large number of automotive parts.

[0081] As one of the optional implementation manners

[0082] Figure 1 is the overall axonometric structure schematic diagram of the segmented vacuum drying equipment of the present invention; Figure 2 is the top view structure schematic diagram of the segmented vacuum drying equipment of the present invention; Figure 3 is the axonometric structure schematic diagram of the segmented vacuum drying equipment of the present invention; Figure 4 is the axonometric partial enlarged view of the cleaning unit and the vacuum drying unit of the present invention; Figure 5 is the axonometric structure schematic diagram of the cooling cover of the present invention.

[0083] Regarding the specific structure of the above-mentioned cleaning unit 3, this embodiment, for example Figure 3 and Figure 4 As shown, the shielding door 31 includes a first gate 311 and a second gate 314; along the direction of conveying part 9, the first gate 311 and the second gate 314 are sequentially arranged on the conveyor line 1, the first gate 311 is arranged in the front, and the second gate 314 is arranged in the back; the second gate 314 is arranged adjacent to the cover door 6; the high-pressure cleaning module 32 is arranged in a manner that can move between the first gate 311 and the second gate 314.

[0084] Specifically, the cleaning unit 3 further includes a first driving cylinder 312, a first guide rod 313, a second driving cylinder 315, and a second guide rod 316; the first driving cylinder 312, the first guide rod 313, the second driving cylinder 315, the second guide rod 316, the first gate 311, and the second gate 314 are all installed above the conveyor line 1.

[0085] Regarding the specific opening and closing structure of the above-mentioned first gate 311 and the way of blocking part 9 on the conveyor line 1, this embodiment, for example Figures 1 to 4As shown, the first driving cylinder 312 and the first guide rod 313 are connected to the top end of the first gate 311. The first driving cylinder 312 drives the first gate 311 to move up and down along the guide of the first guide rod 313 towards the conveyor line 1, for opening or closing the conveyor line 1.

[0086] Regarding the specific opening and closing structure of the second gate 314 and the way of blocking the parts 9 on the conveyor line 1, this embodiment is as follows Figures 1 to 4 As shown, the second driving cylinder 315 and the second guide rod 316 are connected to the top end of the second gate 314. The second driving cylinder 315 drives the second gate 314 to move up and down along the guide of the second guide rod 316 towards the conveyor line 1, for opening or closing the conveyor line 1

[0087] Regarding the specific structure of the high-pressure cleaning module 32 for cleaning the parts 9 and the way of cleaning the parts 9, this embodiment is as follows Figures 1 to 4 As shown, the high-pressure cleaning module 32 includes a translation cylinder 321, a translation guide rail 322 and a square cleaning pipe ring 33; the translation cylinder 321, the translation guide rail 322 and the cleaning pipe ring 33 are all installed above the conveyor line 1, and the cleaning pipe ring 33 is sleeved outside the conveyor line 1. The sliding table of the translation cylinder 321 is connected to the installation side of the cleaning pipe ring 33 and the slider of the translation guide rail 322; on the inner side of the cleaning pipe ring 33 facing the conveyor line 1, a plurality of high-pressure nozzles 331 are evenly arranged in the up, down, left and right directions.

[0088] During application, the translation cylinder 321 cooperates with the translation guide rail 322 to drive the cleaning pipe ring 33 to translate along the guide of the translation guide rail 322 between the first gate 311 and the second gate 314, for starting the cleaning pipe ring 33 to perform translational back-and-forth cleaning on the adjacent parts after the parts 9 flow into the first gate 311 from the conveyor line 1 and after closing the first gate 311 and the second gate 314, and rinsing the surface of the parts 9 in all directions to wash off the debris and cleaning liquid on the surface of the parts 9.

[0089] The advantage is that after the parts 9 entering the cleaning unit 3 are blocked by the first gate 311 and the second gate 314, during the cleaning process of the parts 9, the cleaning pipe ring 33 and the high-pressure nozzles 331 are used to perform back-and-forth cleaning on the parts 9 with clean water, and the cleaning water will not splash to the vacuum drying unit 4 and the air supply unit 7; it avoids affecting the drying operation of the cleaned parts 9 in the subsequent vacuum drying unit 4 and the air supply and cooling drying links.

[0090] Regarding the setting method and specific structure of the vacuum module 5 and the cover door 6 in the above-mentioned vacuum drying unit 4, this embodiment is as follows Figures 1 to 4As shown, the vacuum module 5 is installed on the ground; the cover door 6 includes an upper cover 61 and a lower cover 62; the upper cover 61 is installed above the conveyor line 1 in a liftable manner; the lower cover 62 is installed below the conveyor line 1 and surrounds the lower side of the conveyor line 1; the lower cover 62 is connected to the second suction end 52 of the vacuum module 5; the heating fins 21 are arranged on opposite sides in the conveying direction of the conveyor line 1 and are located between the conveyor line 1 and the side of the lower cover 62.

[0091] During application, since the vacuum module 5 is installed on the ground and is connected to the cover door 6 through a negative pressure pipe to extract gas, creating a sealed and dry environment for the incoming parts 9; the cover door 6 adopts the structure of the upper cover 61 and the lower cover 62, where: the upper cover 61 is liftable and installed above the conveyor line 1; the lower cover 62 is fixed below the conveyor line 1 and is connected to the second suction end 52 of the vacuum module 5; the heating fins 21 are between the conveyor line 1 and the side of the lower cover 62;

[0092] When the part 9 enters the vacuum drying unit 4 through the conveyor line 1, the upper cover 61 descends, engages with the lower cover 62 to form a sealed cavity, and covers the passing part 9; the vacuum module 5 is started first, the first suction end 51 extracts external air, and the second suction end 52 extracts the evaporated water vapor from the inside of the cover door 6 to prevent it from re - condensing on the surface of the part 9; the heating fins 21 are started to uniformly heat the air in the cavity of the cover door 6, so that the moisture on the surface of the part 9 evaporates quickly, thus achieving efficient drying.

[0093] The advantage is that with a closed - type vacuum environment combined with heating up, the drying speed is fast, and moisture evaporation can be completed at a lower temperature in a low - pressure environment, avoiding the influence of high temperature on the performance of the part 9, especially suitable for temperature - sensitive materials.

[0094] Regarding the sealing structure between the above - mentioned upper cover 61 and lower cover 62, in this embodiment, Figures 1 to 4 As shown, a sealing frame is provided between the upper cover 61 and the lower cover 62; in the plane, the sealing frame surrounds the part of the conveyor line 1 located in the vacuum drying unit 4; in the vertical direction, the position of the sealing frame is lower than the surface where the roller of the conveyor line 1 contacts the part 9; the lower cover 62 is hermetically connected to the sealing frame and is fixed; when the part 9 conveyed by the conveyor line 1 reaches the area covered by the lower cover 62, the upper cover 61 descends to surround the upper side of the conveyor line 1 and engages with the sealing frame to form a seal.

[0095] Regarding the lifting structure between the above - mentioned upper cover 61 and lower cover 62, in this embodiment, Figures 1 to 4As shown, the vacuum drying unit 4 further includes a third driving cylinder 63 and a third guide rod 64, both of which are installed above the conveyor line 1; the third driving cylinder 63 and the third guide rod 64 are connected to the top end of the upper cover 61, and the third driving cylinder 63 drives the upper cover 61 to move up and down along the guide of the third guide rod 64 to open or cover the parts 9 conveyed into the vacuum drying unit 4 by the conveyor line 1.

[0096] During application, the lifting of the upper cover 61 is controlled by the third driving cylinder 63 and the third guide rod 64. The third driving cylinder 63 and the third guide rod 64 are installed above the conveyor line 1: the third driving cylinder 63 is responsible for driving the upper cover 61 to lift; the third guide rod 64 provides guidance to ensure the stable lifting of the upper cover 61 without deviation.

[0097] When the part 9 enters the vacuum drying unit 4, the third driving cylinder 63 is activated to lower the upper cover 61 to form a sealed cavity with the sealing frame; the vacuum module 5 is activated to evacuate the inside of the hood door 6 and form a vacuum cavity environment; after drying is completed, the vacuum module 5 blows air in the reverse direction to raise the air pressure inside the hood door 6 to normal pressure, the third driving cylinder 63 activates the upper cover 61 to rise to restore the open state, and the conveyor line 1 starts to convey the part 9 to the next process and enters the air supply unit 7.

[0098] The advantage is that using a cylinder to drive the upper cover 61 to lift improves the automation level compared to the traditional mechanical lock for closing the upper cover 61 and the lower cover 62, and enhances the stability and durability of the equipment operation.

[0099] Regarding the specific air supply structure in the above air supply unit 7, this embodiment is as Figures 1 to 3 and Figure 5 As shown, the air supply unit 7 includes a cooling hood 71 and a cold air duct 72. The cooling hood 71 straddles the conveyor line 1, and the cold air duct 72 connects the cooling hood 71 and the air supply end 53; the cooling hood 71 is provided with a cooling channel 711 along the direction of conveying the part 9 by the conveyor line 1. Air supply plates 712 are provided on both sides inside the cooling channel 711, and a flow guide plate 713 is provided at the top inside the cooling channel 711. The flow guide plate 713 is inclined from the center to the air supply plates on both sides; an air duct opening 714 communicating with the inside of the cooling channel 711 is provided at the top of the cooling hood 71, and the air duct opening 714 is connected to the cold air duct 72.

[0100] During application, the air supply unit 7 is composed of a cooling cover 71 and a cold air duct 72. The cooling cover 71 straddles the conveyor line 1, and the cooling channel 711 extends along the direction of the conveyor line 1, so that when the part 9 passes by, it is pushed by the conveyor line 1 into the cooling channel 711. A deflector plate 713 is provided at the top of the cooling channel 711, which inclines towards the two side air supply plates 712 to guide the air flow to flow towards both sides, improving the uniformity of the air distribution in the cooling cover 71. Air supply plates 712 are provided on both sides of the cooling channel 711, which can deflect the end air direction of the air supply, provide a uniform cold air coverage for the cooling channel 711, and improve the cooling and drying effects on the part 9.

[0101] During transportation, the cold and dry cold air sent out from the cooling channel 711 continuously purges the moving part 9, which can fully cool and dry the part 9, eliminate the temperature rise of the part 9 in the vacuum drying unit 4, and facilitate the part 9 to enter the next process for processing or measurement.

[0102] The advantage is that after the part 9 enters the cooling cover 71, the cold air duct 72 transports the low-temperature and dry gas. By optimizing the air flow path through the deflector plate 713, air flow disorder is avoided, and the air flow is guided to be sent to the two side air supply plates 712 sufficiently and uniformly, and the surface of the part 9 is uniformly purged through the air supply plates 712, improving the cooling and drying effects. The cold air of the air supply unit 7 performs secondary drying on the part 9, which not only removes the residual moisture, but also reduces the temperature of the part 9, preventing the part 9 from expanding and contracting due to heat and cold and affecting the subsequent process.

[0103] Figure 6 It is a schematic structural diagram of the first flow channel, the second flow channel and the converging flow channel of the vacuum module of the present invention.

[0104] The second embodiment of the segmented vacuum drying equipment is as Figure 6 shown. The difference between this embodiment and the first embodiment is that the flow channel structure of the vacuum module 5 is optimized. Through the air flow processing structures of the first flow channel 54, the second flow channel 55, the converging flow channel 56 and multiple cooling chambers 563, and the formation of a cooling and dehydration combined structure by combining with the refrigerating fins 22 of the heat pump unit 2, the drying efficiency and energy utilization rate of the vacuum drying unit 4 and the air supply unit 7 are improved.

[0105] Specifically, a first flow channel 54, a second flow channel 55 and a converging flow channel 56 are provided in the vacuum module 5; the converging flow channel 56 is provided with a converging end 561 and an independent end 562; one end of the first flow channel 54 is connected to the first suction end 51, one end of the second flow channel 55 is connected to the second suction end 52, the other ends of the first flow channel 54 and the second flow channel 55 are connected to the converging end 561 of the converging flow channel 56, and the independent end 562 of the converging flow channel 56 is connected to the air supply end 53; there are multiple refrigerating fins 22 of the heat pump unit 2; multiple cooling chambers 563 are provided on the converging flow channel 56, and refrigerating fins 22 are provided in each of the multiple cooling chambers 563.

[0106] During application, one end of the first flow channel 54 is connected to the first air suction end 51 to suck the air in the open space; the other end is connected to the convergence end 561 of the convergence flow channel 56; one end of the second flow channel 55 is connected to the second air suction end 52, which is connected to the inside of the cover door 6 to extract the water vapor in the cavity, and the other end is also connected to the convergence end 561 of the convergence flow channel 56; the convergence end 561 provided on the convergence flow channel 56 is connected to the first flow channel 54 and the second flow channel 55, and the independent end 562 is connected to the air supply end 53 of the vacuum module 5; and between the two ends of the convergence flow channel 56, a plurality of cooling chambers 563 are provided thereon, and the refrigeration fins 22 are installed inside the cooling chambers 563; the number of the refrigeration fins 22 of the heat pump unit 2 is increased and evenly distributed in the plurality of cooling chambers 563.

[0107] The advantages are as follows: improving the moisture removal efficiency: the first flow channel 54 and the second flow channel 55 respectively extract the external air and the water vapor inside the cover door 6, and after mixing in the convergence flow channel 56, they sequentially pass through the plurality of cooling chambers 563, and also sequentially pass through the refrigeration fins 22 provided in the cooling chambers 563 to centrally process the mixed gas;

[0108] Through the multi-channel parallel design, the water vapor can enter the cooling area of the convergence flow channel 56 faster, avoiding its reflux or diffusion during the transportation process and improving the suction efficiency;

[0109] Reducing energy consumption and improving the cooling efficiency: a plurality of cooling chambers 563 are distributed on the convergence flow channel 56, and the refrigeration fins 22 are provided in each cooling chamber 563, which can condense the water vapor more evenly and efficiently, improve the cooling capacity of the heat pump unit 2, and the condensed dry air enters the air supply unit 7 through the air supply end 53, transports more heat to the heating fins, releases and raises the temperature, realizes heat recovery, and reduces the energy consumption of the entire drying system;

[0110] The air supply is more uniform and the drying effect is better: since the independent end 562 of the convergence flow channel 56 is directly connected to the air supply end 53, the temperature and humidity of the gas processed by the continuous plurality of cooling chambers 563 are more stable, so that the quality of the cold air output by the air supply unit 7 is higher, and further improves the uniformity of the surface drying of the part 9;

[0111] Adapting to more complex working conditions and improving the system stability: the independent design of the first flow channel 54 and the second flow channel 55 ensures that even if the air flow rate at either the first air suction end 51 or the second air suction end 52 fluctuates, it will not affect the overall drying effect, making the equipment applicable to working conditions with different part 9 sizes and humidities.

[0112] Figure 6 It is a schematic structural diagram of the first flow channel, the second flow channel and the convergence flow channel of the vacuum module of the present invention.

[0113] The third embodiment of the segmented vacuum drying equipment is asFigure 6 As shown, the difference between this embodiment and the first embodiment is that the vacuum module 5 further includes a drain pipe 57; a plurality of drain ports 564 are provided on the converging flow channel 56, the drain ports 564 are provided at the bottom of the cooling chamber 563, and the plurality of drain ports 564 are connected in parallel to the drain pipe 57.

[0114] During application, the drain pipe 57 and the plurality of drain ports 564 are provided for draining the condensed water that slides off the refrigerating fins 22.

[0115] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A segmented vacuum drying device, characterized in that, it includes a conveyor line for conveying parts to be cleaned and a heat pump unit; and along the direction of conveying parts on the conveyor line, a cleaning unit, a vacuum drying unit and a blowing unit are sequentially arranged; Independent opening and closing shielding doors are provided on both the front and rear of the cleaning unit, and a high-pressure cleaning module that fully surrounds the parts is provided in the middle; The vacuum drying unit is provided with a vacuum module and a cover door that can be sealed or opened; the vacuum module is provided with a first suction end, a second suction end and a blowing end, and the gases sucked by the first suction end and the second suction end are collected and sent out from the blowing end; the first suction end sucks air in an open space; The second suction end is connected to the cover door, and heating fins of the heat pump unit are arranged within the range covered by the cover door; The blowing unit is connected to the blowing end; The refrigeration fins of the heat pump unit are arranged in the vacuum module, and are used for refrigerating and drying and dehydrating the gas collected at the blowing end, and transferring heat to the heating fins; The cleaning unit isolates the parts for high-pressure cleaning to remove residual debris and cleaning liquid on the surface, the vacuum drying unit performs short-time vacuum heating on the parts, quickly evaporates and sucks away the moisture on the surface of the parts to perform primary drying, and the blowing unit blows dry cold air on the parts to quickly reduce the temperature of the parts and perform secondary drying.

2. The segmented vacuum drying device according to claim 1, characterized in that, it further includes a production line stand, and the conveyor line is installed on the production line stand; The conveyor line adopts a powered roller conveyor structure.

3. The segmented vacuum drying device according to claim 1, characterized in that, The shielding door includes a first gate and a second gate; Along the direction of conveying parts, the first gate and the second gate are sequentially arranged on the conveyor line, the first gate is arranged in the front, and the second gate is arranged in the rear; The second gate is arranged adjacent to the cover door; The high-pressure cleaning module is arranged in a manner that it can move between the first gate and the second gate.

4. The segmented vacuum drying device according to claim 3, characterized in that, The cleaning unit further includes a first driving cylinder, a first guide rod, a second driving cylinder and a second guide rod; The first driving cylinder, the first guide rod, the second driving cylinder, the second guide rod, the first gate and the second gate are all erected above the conveyor line; The first driving cylinder and the first guide rod are connected to the top end of the first gate, and the first driving cylinder drives the first gate to move up and down along the guidance of the first guide rod towards the conveyor line for opening or closing the conveyor line; The second driving cylinder and the second guide rod are connected to the top end of the second gate, and the second driving cylinder drives the second gate to move up and down along the guidance of the second guide rod towards the conveyor line for opening or closing the conveyor line; The high-pressure cleaning module includes a translation cylinder, a translation guide rail and a square cleaning pipe ring; The translation cylinder, the translation guide rail, and the cleaning pipe ring are all installed above the conveyor line, and the cleaning pipe ring is sleeved outside the conveyor line. The slide of the translation cylinder is connected to the installation side of the cleaning pipe ring and the slider of the translation guide rail; On the inner side of the cleaning pipe ring facing the conveyor line, a plurality of high-pressure nozzles are evenly arranged in the up, down, left, and right directions.

5. The segmented vacuum drying equipment according to claim 1, characterized in that, The vacuum module is installed on the ground; The cover door includes an upper cover and a lower cover; the upper cover is installed above the conveyor line in a liftable manner; the lower cover is installed below the conveyor line and surrounds the lower side of the conveyor line; the lower cover is connected to the second suction end of the vacuum module; The heating fins are arranged on opposite sides in the conveying direction of the conveyor line and are located between the conveyor line and the side of the lower cover.

6. The segmented vacuum drying equipment according to claim 5, characterized in that, A sealing frame is provided between the upper cover and the lower cover; In the plane, the sealing frame surrounds the part of the conveyor line located in the vacuum drying unit; In the vertical direction, the position of the sealing frame is lower than the surface where the roller of the conveyor line contacts the part; The lower cover is hermetically connected to the sealing frame and is fixed. When the part conveyed by the conveyor line reaches the area covered by the lower cover, the upper cover descends to surround the upper side of the conveyor line and engages with the sealing frame to form a seal.

7. The segmented vacuum drying equipment according to claim 5, characterized in that, The vacuum drying unit further includes a third driving cylinder and a third guide rod, and both the third driving cylinder and the third guide rod are installed above the conveyor line; The third driving cylinder and the third guide rod are connected to the top end of the upper cover. The third driving cylinder drives the upper cover to move up and down along the guidance of the third guide rod towards the sealing frame, for opening or covering the part conveyed by the conveyor line into the vacuum drying unit.

8. The segmented vacuum drying equipment according to claim 1, characterized in that, The air supply unit includes a cooling cover and a cold air pipe. The cooling cover straddles the conveyor line, and the cold air pipe connects the cooling cover and the air supply end; The cooling cover is provided with a cooling channel along the direction of conveying parts by the conveyor line. Air supply plates are provided on both sides inside the cooling channel, and a diversion plate is provided at the top inside the cooling channel. The diversion plate inclines from the center to the air supply plates on both sides; An air duct opening communicating with the inside of the cooling channel is provided at the top of the cooling cover, and the air duct opening is connected to the cold air pipe.

9. The segmented vacuum drying equipment according to claim 1, characterized in that, A first flow channel, a second flow channel, and a converging flow channel are provided in the vacuum module; the converging flow channel has a converging end and an independent end; One end of the first flow channel is connected to the first suction end, one end of the second flow channel is connected to the second suction end, the other ends of the first flow channel and the second flow channel are connected to the converging end of the converging flow channel, and the independent end of the converging flow channel is connected to the air supply end; The refrigeration fins of the heat pump unit are provided with a plurality of; A plurality of cooling chambers are provided on the converging flow channel, and the refrigeration fins are provided in all of the plurality of cooling chambers.

10. The segmented vacuum drying equipment according to claim 9, characterized in that The vacuum module further includes a drain pipe; A plurality of drain ports are provided on the converging flow channel, the drain ports are arranged at the bottom of the cooling chamber, and the plurality of drain ports are connected in parallel to the drain pipe for draining the condensed water sliding off the refrigeration fins.

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