CN112934546A - Coating production line and coating process for standard knot of construction elevator - Google Patents
Coating production line and coating process for standard knot of construction elevator Download PDFInfo
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- CN112934546A CN112934546A CN202110322538.4A CN202110322538A CN112934546A CN 112934546 A CN112934546 A CN 112934546A CN 202110322538 A CN202110322538 A CN 202110322538A CN 112934546 A CN112934546 A CN 112934546A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0426—Cooling with air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/06—Impeller wheels; Rotor blades therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
- B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
The invention discloses a coating production line for a standard knot of a construction elevator, which comprises an upper workpiece area, a lower workpiece area, a conveying track, a shot blasting machine, a shot cleaning room, a spraying room, a curing room and a cooling station, the conveying track sequentially passes through the workpiece feeding area, the shot blasting machine, the shot cleaning chamber, the spraying room, the curing room, the cooling station and the workpiece discharging area to form a continuous operation production line, a plurality of shot blasting machines with opposite openings are arranged on the inner wall of the shot blasting chamber in the shot blasting machine, the shot blasting chamber is communicated with the shot cleaning chamber, a plurality of shot cleaning guns are arranged in the shot cleaning chamber, a recovery device which is inclined from the shot cleaning chamber to the shot blasting machine is arranged at the bottom of the shot cleaning chamber, so that the balls falling after cleaning fall back into the shot blasting machine, the top of the shot blasting chamber and the top of the shot cleaning chamber are both communicated with a filter drum dust remover, a plurality of movable spray guns are arranged on two sides of a conveying track in the spraying room, and a heating system is arranged in the curing room to heat the passing standard sections. The semi-automatic production line mode of the invention requires less labor, and solves the problem of high labor cost.
Description
Technical Field
The invention relates to the technical field of coating protection of construction elevators, and particularly belongs to a coating production line and a coating process for standard sections of construction elevators.
Background
The construction elevator standard knot is as construction elevator's operation guide rail, is construction elevator's important structure spare, because its functioning speed is fast, operating condition is abominable, consequently in construction elevator standard knot's production process, in order to guarantee its corrosion resistance and pleasing to the eye requirement, it is essential process to carry out the coating protection to construction elevator standard knot. The coating process method of the standard knot of the existing construction elevator comprises the following steps: pretreatment (manual polishing), manual painting, leveling and natural air drying, wherein the pretreatment is the primary flow of a coating process, good pretreatment plays a vital role in the adhesion of a subsequent paint film, and manual polishing is a relatively rough pretreatment mode. The manual painting is that the surface of a product is directly painted by an operator through a spray gun. Leveling refers to the process by which the paint gradually shrinks to a minimum area after application, before drying to a film, due to surface tension. After leveling, the standard knot is placed in an open field for natural air drying, and generally, the paint can be surface-dried within 1 hour, completely dried within 24 hours and completely cured within 72 hours.
The manual polishing in the prior art has low efficiency, high labor intensity and difficulty in ensuring the polishing quality, and the manual operation has the problems of proficiency and technical level, so that the consistency of a processed workpiece is difficult to ensure and the dust pollution is serious. The manual paint spraying has serious waste, large loss and increased cost; the spraying quality is unstable; because the manual spraying modes are different, the uniformity of the painting amount and the stability of the quality are difficult to ensure in the spraying process; the production efficiency is low, and the method is not suitable for large-batch production; the pollution is serious, and the paint mist is not treated, so the health of operators is seriously influenced, and the environment is polluted. The natural air drying time is long, and the occupied area is large. Because the manpower that drops into is more, and administrative cost is higher, and workman's wage cost is higher. In the prior art, a production line type batch coating production process for forming a system by coating standard sections of a construction elevator does not exist, and the production targets of cost reduction, efficiency improvement, production improvement, quality improvement, environmental protection and energy conservation cannot be met.
Disclosure of Invention
The invention aims to solve the problems of low efficiency, uneven quality, serious pollution, long period and high labor cost in the prior coating technology, and forms a systematic and streamlined batch coating production process of a construction elevator by a semi-automatic coating production line and a complete new process method of loading → shot blasting → pill cleaning → powder spraying → powder curing → cooling → checking unloading on the premise of reducing the influence of traditional manual randomness errors as much as possible, thereby realizing the production goals of cost reduction, efficiency improvement, production improvement, environmental protection and energy saving.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coating production line for a standard section of a construction elevator comprises an upper workpiece area, a lower workpiece area, a conveying track, a shot blasting machine, a shot cleaning room, a spraying room, a curing room and a cooling station, the conveying track sequentially passes through the workpiece feeding area, the shot blasting machine, the shot cleaning chamber, the spraying room, the curing room, the cooling station and the workpiece discharging area to form a continuous operation production line, a plurality of shot blasting machines with opposite openings are arranged on the inner wall of the shot blasting chamber in the shot blasting machine, the shot blasting chamber is communicated with the shot cleaning chamber, a plurality of shot cleaning guns are arranged in the shot cleaning chamber, a recovery device which is inclined from the shot cleaning chamber to the shot blasting machine is arranged at the bottom of the shot cleaning chamber, so that the balls falling after cleaning fall back into the shot blasting machine, the top parts of the shot blasting chamber and the shot cleaning chamber are both communicated with a filter drum dust remover, a plurality of movable spray guns are arranged on two sides of a conveying track in the spraying room, and a heating system is arranged in the curing room to heat the passing standard sections.
Furthermore, the shot blasting machine is a centrifugal shot blasting machine, the bottom of a shot blasting chamber of the shot blasting machine is communicated with one end of a horizontally arranged first screw extruder, the other end of the first screw extruder is provided with a vertically upward feeding pipe, an air pump is arranged on the feeding pipe, the upper end of the feeding pipe is connected with one end of a horizontally arranged second screw extruder, a blanking hopper is arranged below the other end of the second screw extruder, and a plurality of hoses are arranged below the blanking hopper and communicated with the shot blasting machines.
Furthermore, elevators are arranged on two sides of the conveying track in the shot cleaning chamber, the shot cleaning gun is a high-pressure air gun, and the recovery device is a sliding plate inclined from the shot cleaning chamber to the shot blasting machine.
Furthermore, the spraying room is connected with an automatic powder recovery system, a large cyclone device and a filtering device, the automatic powder recovery system is communicated with a spraying gun in the spraying room to deliver the coating to the spraying gun for spraying, the bottom of the spraying room is communicated with the top of the large cyclone device, the bottom of the large cyclone device is communicated with the automatic powder recovery system to deliver the coating back to the spraying room again, the filtering device is communicated with the top of the large cyclone device, and a filter element is arranged in the filtering device.
Furthermore, the side of the curing room is provided with a heating chamber, the top and the bottom of the curing room are both communicated with the heating chamber, and the top of the curing room is provided with an air pump for providing power to enable hot air to circulate in the curing room.
Further, the cooling station is a double-track conveying rail, and the standard knot is stopped on the cooling station for natural cooling.
A coating process for a coating production line by using a standard knot of a construction elevator comprises the following steps
(1) After the standard knot is loaded in the loading area, the standard knot is conveyed to a shot blasting machine through a conveying track for shot blasting, and then the standard knot enters a shot cleaning chamber, a shot cleaning gun is manually used for cleaning shots, and a filter cartridge dust remover is started for removing dust;
(2) conveying the standard knot subjected to pill removal into a spraying room, spraying paint on the standard knot by using spray guns on two sides in the process that the standard knot slowly passes through the spraying room, and conveying the standard knot out of a conveying track after manual inspection and spraying are finished at an outlet of the spraying room;
(3) and conveying the sprayed standard knot into a curing room, starting hot air circulation heating in the curing room while conveying to cure the coating, conveying to a cooling station, staying and standing for a period of time, and conveying to a lower part area after the standard knot is completely cooled to finish coating of the lower part.
Further, the total dust removal air volume in the filter cartridge dust remover is 28000 and 31000m3/h。
Furthermore, the spraying room is communicated with a large cyclone device for recovering the coating, and the air volume of the large cyclone device is 17500 cubic meters per hour.
Further, the temperature in the curing room is 180-220 ℃, the curing time is 40-45min, and the cooling time is 35-40 min.
Aiming at the problems of low efficiency, uneven quality, serious pollution, long period and high labor cost in the existing coating technology, the invention adopts a semi-automatic technology and a new process method, and greatly improves the pretreatment capability, the corrosion resistance and the aesthetic property of a coating of a standard section, reduces the labor cost, improves the efficiency and the productivity and is more environment-friendly by a semi-automatic coating production line and a perfect new process method of loading → shot blasting → shot cleaning → powder spraying → powder curing → cooling → checking unloading under the premise of reducing the influence of errors of the traditional manual randomness as much as possible, thereby forming a coating systematized and assembly line type batch coating production process of the standard section of a construction elevator, and further realizing the production targets of cost reduction, efficiency improvement, production improvement, environmental protection and energy saving.
The invention can realize the optimal combination of the standard section semi-automatic coating production line and the new process method to the maximum extent. The technology adopts a power and free conveyor for conveying, and can realize continuous or discontinuous workpiece conveying under program control; the pretreatment adopts a mode of automatic shot blasting and manual shot cleaning, and shot blasting cleaning reaches Sa2.5 level; the powder spraying adopts a mode of powder spraying by a reciprocating machine and manual additional spraying, the powder applying rate is high, the powder spraying room adopts a European advanced technology cyclone two-stage recycling plastic spraying room, the designed air draft airflow is stable and reasonable, the powder applying rate and the coating quality of a workpiece are ensured, and the recycling rate reaches 98%; the powder is solidified at high temperature in a drying tunnel, the drying tunnel adopts a tunnel structure, a natural gas heating system and a hot air circulation mode, the furnace temperature is uniform, and the heat preservation effect is good; the side furnace plates adopt layered isolation to ensure that the energy consumption is reduced to the minimum, and the outer side plates adopt a buckle plate form, so that the side furnace plates are attractive and elegant; the control system adopts PLC programmable centralized control, the whole production line has compact design and simple maintenance, and the production cost is reduced.
According to the invention, according to a standard semi-automatic coating production line and a novel perfect process method of loading pieces → shot blasting → shot clearing → powder spraying → powder curing → cooling → checking unloading pieces, the production efficiency is maximally improved through a production line operation form, and meanwhile, the product quality is qualitatively improved through advanced processes of shot blasting, powder spraying, powder curing and the like, a large cyclone secondary recovery plastic spraying room is adopted, the powder loading rate and the coating quality of workpieces are ensured, the recovery utilization rate reaches 98%, the problem of air pollution caused by paint atomization and volatilization is avoided, less labor is required in a semi-automatic production line mode, and the problem of high labor cost is solved.
The innovative idea of the invention is characterized in that:
1. the requirement of a pipeline operation form is met, and a new mode that the goods can be delivered after being downloaded from a standard section is realized;
2. the pretreatment adopts an automatic shot blasting mode, so that the method is safe and environment-friendly, and the surface quality of the workpiece is ensured;
3. the recycling rate of the powder reaches 98 percent, and the powder coating rate and the environmental protection performance of the workpiece can be ensured;
4. the three goals of cost reduction, efficiency improvement, production improvement, environment protection and energy conservation are realized;
the key problems solved by the invention are as follows: (1) the manual polishing efficiency is low, the labor intensity is high, and the polishing quality is difficult to ensure. The impeller rotating at high speed of the impeller is used for throwing the shot to the surface of the workpiece in an accelerated manner, so that the surface of the workpiece is impacted and scraped, not only can molding sand, rust, dirt and the like on the surface of the workpiece be cleaned, but also the surface stress of the workpiece can be eliminated, the surface of the workpiece is subjected to shot blasting reinforcement, the fatigue resistance of the workpiece is improved, the coating adhesive force of the workpiece during spraying is increased, and finally the purpose of improving the surface and the internal quality of the whole workpiece is achieved. (2) The manual paint spraying has the problems of serious waste, large loss, cost increase, unstable spraying quality and environmental pollution caused by volatilization of a paint solvent. The invention adopts a powder spraying mode of powder spraying by a reciprocating machine and manual additional spraying, has high powder applying rate, adopts a European advanced technology cyclone two-stage recycling plastic spraying room as a powder room, has stable and reasonable air flow of air draft, ensures the powder applying rate and the coating quality of a workpiece, has the recycling rate of 98 percent, and avoids the problem of environmental pollution caused by volatilization of a paint solvent. (3) There is no systematic, streamlined, batch coating production process problem. The invention adopts a standard section semi-automatic coating production line and a perfect new process method of loading pieces → shot blasting → shot clearing → powder spraying → powder curing → cooling → checking loading pieces, thereby realizing the production targets of cost reduction, efficiency improvement, production improvement, environmental protection and energy saving.
In summary, due to the adoption of the technical scheme, the invention has the following technical effects:
1. the production line adopts a semi-automatic assembly line operation mode, the conveying mode adopts an GWJ3 accumulation type conveyor for conveying, an accumulation trolley is arranged, the single-trolley hoisting weight is 800KG hanging, the conveying mode can realize continuous workpiece conveying under program control, the process beat is 2 minutes/section, the daily production is more than 400 sections, the efficiency is more than 3 times that of manual paint spraying, and the labor cost is reduced by 1/3.
2. The pretreatment adopts an automatic shot blasting mode, and the impeller which rotates at high speed by the impeller head is used for throwing the shot to the surface of the workpiece in an accelerated manner to impact and scrape the surface of the workpiece, so that not only can the molding sand, rust, dirt and the like on the surface of the workpiece be cleaned, but also the surface stress of the workpiece can be eliminated, the shot blasting strengthening is carried out on the surface of the workpiece, the fatigue resistance of the workpiece is improved, the coating adhesive force when the workpiece is sprayed is increased, and finally the purpose of improving the surface and the internal quality of the whole workpiece is achieved.
3. The invention adopts the large rotary two-stage recycling plastic spraying room adopting the European technology, the body adopts special engineering plastic, the non-conducting property is easy to clean, and the color changing is convenient and quick; the primary cyclone recovery has high recovery efficiency, and the recovery utilization rate reaches 98 percent; the filter element of the secondary filter adopts inlet filter paper, the efficiency of 99.9 percent can be achieved when standard type powder coating is filtered, the exhaust emission can be ensured to be less than 3.0mg/m3, and the exhaust can be discharged indoors. The spray room is provided with a workpiece recognition system, and if no workpiece enters, the spray gun automatically stops spraying, so that powder loss can be reduced.
4. The powder is solidified at high temperature in the drying tunnel, the drying tunnel adopts a tunnel structure, a natural gas heating system and a hot air circulation mode, the furnace temperature is uniform, and the heat preservation effect is good; the side furnace plates are separated in a layering mode to ensure that energy consumption is reduced to the minimum, the outer side plates are in a pinch plate mode, the appearance is attractive and elegant, the standard sections can be delivered after being solidified and cooled, and the occupied area is small.
Drawings
FIG. 1 is a schematic view of the construction of a production line of the present invention;
FIG. 2 is a schematic structural view of the shot blasting machine of the present invention;
FIG. 3 is a schematic view of the construction of the spray booth of the present invention;
FIG. 4 is a schematic structural view of a curing room of the present invention;
FIG. 5 is a process flow diagram of the present invention;
in the figure: the device comprises a feeding area 1, a discharging area 2, a conveying track 3, a shot blasting machine 4, a shot blasting machine 41, a shot blasting chamber 42, a first screw extruder 43, a feeding pipe 44, a second screw extruder 45, a discharging hopper 46, a shot cleaning chamber 5, a spraying room 6, a spray gun 61, an automatic powder recovery system 62, a large cyclone device 63, a filtering device 64, a curing room 7, a cooling station 8 and a filter cartridge dust remover 9.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
As shown in fig. 1, a coating production line for a standard section of a construction elevator comprises an upper area 1, a lower area 2, a conveying track 3, a shot blasting machine 4, a shot cleaning chamber 5, a spraying chamber 6, a curing chamber 7 and a cooling station 8, wherein the conveying track sequentially passes through the upper area 1, the shot blasting machine 4, the shot cleaning chamber 5, the spraying chamber 6, the curing chamber 7, the cooling station 8 and the lower area 2 to form a continuous production line, a plurality of shot blasting machines 41 with opposite openings are arranged on the inner wall of a shot blasting chamber 42 in the shot blasting machine 4, the shot blasting chamber 42 is communicated with the shot cleaning chamber 5, a plurality of shot cleaning guns are arranged in the shot cleaning chamber 5, a recovery device inclining from the shot cleaning chamber 5 to the shot blasting machine 4 is arranged at the bottom of the shot cleaning chamber 5, balls falling after cleaning fall back to the shot blasting machine 4, filter cartridges 9 are communicated with the tops of the shot cleaning chamber 42 and the shot cleaning chamber 5, a plurality of movable spray guns 61 are arranged on two sides of the conveying track 3 in the spraying chamber 6, and a heating system is arranged in the curing room 7 to heat the passed standard knot. The workpiece loading area 1 and the workpiece unloading area 2 are provided with hydraulic lifting platforms, and lifting type hanging of the workpieces can be achieved through standard sections.
The conveying track 3 is arranged at a station of the accumulation type conveying chain and is provided with a double-layer track three-dimensional space closed-loop continuous conveying system, and the conveying system comprises an accumulation type conveying line and an accumulation type conveyor. The power and free conveyor line can run at high speed, saves the time for conveying goods between stations, improves the production efficiency, greatly reduces the number of lifting appliances, reduces the traction force of the chain and lowers the manufacturing cost. The power and free conveyor adopts GWJ3 conveying, is provided with a power and free trolley, and can realize continuous or discontinuous workpiece conveying under program control by hanging 800KG by a single trolley. The conveying system is provided with a complete line automatic device, can finish the complex process flows of classification, storage, branching, confluence, automatic loading and unloading of conveyed articles and the like, and leads the production of factories to be carried out orderly according to a certain process flow.
The shot blasting machine 4 is a centrifugal shot blasting machine, the bottom of a shot blasting chamber 42 of the shot blasting machine 4 is communicated with one end of a horizontally arranged first screw extruder 43, the other end of the first screw extruder 43 is provided with a vertically upward feeding pipe 44, the feeding pipe 44 is provided with an air pump, the upper end of the feeding pipe 44 is connected with one end of a horizontally arranged second screw extruder 45, a blanking hopper 46 is arranged below the other end of the second screw extruder 45, and a plurality of hoses are arranged below the blanking hopper 46 to be communicated with the shot blasting machines 41. The shot blasting machine 4 is arranged on a shot blasting station, a shot blasting chamber and a shot blasting machine are arranged in the shot blasting station, the length of the shot blasting chamber is 2.4 meters, and a shell of the shot blasting chamber is of a welded structure of a steel plate and section steel and has enough strength and rigidity; the periphery of the shot blasting chamber is provided with 8 shot blasting devices, the arrangement of the shot blasting devices is subjected to three-dimensional dynamic simulation by a computer, all arrangement angles and positions are determined by computer simulation, each group of shot blasting devices form a certain angle with the running direction of a workpiece, all-around shot blasting cleaning of the periphery and end faces of the cleaned workpiece is guaranteed, the optimized casting effect is achieved, and the industry leading level is achieved. The manual shot cleaning station 4 is provided with a cleaning chamber and a shot cleaning system, the length of the cleaning chamber is 5.0 m, and the cleaning chamber adopts a 2.0 steel plate and square steel tube welding structure and has enough strength and rigidity; the pill cleaning system is provided with 2 dust blowing guns taking compressed air as power, and dust and pills attached to the surface of a workpiece can be removed by matching with a pill suction machine purchased by a user.
As shown in fig. 2, the elevators are arranged on two sides of the conveying track 3 in the shot cleaning chamber 5, an operator can stand on the elevator to clean shots, the shot cleaning gun is a high-pressure air gun, the recovery device (not shown in the figure) is a sliding plate inclined from the shot cleaning chamber to the shot blasting machine, the shot cleaning chamber 5 is arranged on an artificial shot cleaning station, the shot blasting station and the artificial shot cleaning station form a pretreatment system, and the whole pretreatment system has the main advantages that: shot blasting equipment is linearly arranged (a workpiece feeding area, a front auxiliary chamber, a shot blasting chamber, a shot cleaning chamber and a workpiece discharging area); hoisting by double hooks; the circulation clearance, overall structure is compact, practical, pleasing to the eye. And 2, the shot blasting device arrangement is simulated by a three-dimensional computer, 8 shot blasting devices are adopted, and the shot blasting devices and the workpiece in-out direction form a certain included angle to impact and scrape the surface of the workpiece, so that not only can the molding sand, rust, dirt and the like on the surface of the workpiece be cleaned, but also the surface stress of the workpiece can be eliminated, the shot blasting reinforcement is carried out on the surface of the workpiece, the fatigue resistance of the workpiece is improved, the paint film adhesive force of the workpiece during paint spraying is increased, and the shot blasting surface quality is greatly improved. And the shot blasting machine shell is connected with the cleaning chamber through a flange through hole, long guard plates at two ends of the shot blasting machine are wear-resistant rolled Mn13 guard plates, and the whole equipment is firm, durable and convenient to maintain. The door and the chamber body are sealed in a labyrinth way through the steel guard plate, the rubber plate and the brush, the operation is closed, and no dust flies; fifthly, the specified derusting grade can be cleaned according to the purpose of the steel, and different shot blasting smooth finishes and finished surfaces with uniform cleaning quality can be obtained; and the assembly line operation has high speed, high working efficiency and stable quality.
The filter cartridge dust remover 9 is arranged at a dust treatment station, the dust treatment station is provided with a dust removal system, the dust removal system adopts two-stage dust removal and comprises a settling chamber and a QACL48 vertical filter cartridge dust remover respectively, the total dust removal air volume of the dust removal equipment is about 28000 and 31000m3/h, and the dust removal points comprise a shot blasting chamber, a front sealing chamber, a rear sealing chamber, a supplementary spraying cleaning chamber and a separator respectively. Under normal operation, dust-containing air enters the dust remover through the top inlet, then passes through the filter element after being dispersed downwards through the guide plate, dust is blocked on the outer surface of the filter element, and filtered clean air enters the clean air chamber through the center of the filter element and is discharged through the outlet pipe. The filter element can automatically and discontinuously clean the dust, in the dust cleaning process of the filter element, the pulse controller is connected with a power supply of an electromagnetic pulse valve, so that pulse high-pressure air is sprayed out by the corresponding film valve, the high-pressure air penetrates through the filter element from inside to outside to remove dust attached to the outer surface of the filter element, and dust particles fall into the dust hopper and then enter the dust collecting barrel.
As shown in fig. 3, the spraying room 6 is connected with an automatic powder recovery system 62, a large cyclone device 63 and a filtering device 64, the automatic powder recovery system 62 is communicated with a spray gun in the spraying room 6 to send the coating to the spray gun 61 for spraying, the bottom of the spraying room 6 is communicated with the top of the large cyclone device 63, the bottom of the large cyclone device 63 is communicated with the automatic powder recovery system 62 to send the coating back to the spraying room 6 again, the filtering device 64 is communicated with the top of the large cyclone device 63, and a filter element is arranged in the filtering device 64. The spraying room 6 is arranged at the electrostatic powder spraying station and is provided with a large cyclone secondary recovery spraying system, and the large cyclone secondary recovery spraying system comprises a spraying room, an electric lifter, a large cyclone device, a filtering device and an automatic powder recovery system; the CQB efficient spray room system integrally adopts a sandwich type plastic structure, is elegant and bright in design, is externally provided with a hand-repairing station in an open mode, is convenient to operate manually, adopts a flow-equalizing type multi-channel design for bottom recovery, and homogenizes air flow in air draft, so that better powdering efficiency is obtained, and ATEX fireproof and explosion-proof safety requirements are met; the appearance of the electric lifter is elegant, the manufacturing precision can ensure the long-term stability and the repeatability accuracy of the spray gun during automatic spraying, and a user can preset the required data of lifting high and low positions, traveling distance, lifting speed and the like of each workpiece and input the data into a control system for later repeated use; the spray booth comprises 8 sets of Swiss Jinma automatic electrostatic powder spray gun equipment GA03 and 2 sets of manual powder spraying systems
2W, the electrostatic powder spraying system adopts an electronic control mode to adjust the setting of air and continuously monitor production parameters, so that a high-quality spraying effect can be obtained. KLC1400 type high efficiency large screwThe air device has an air quantity of 17500 cubic meters per hour, and the recycling rate is as high as 98%; the filter device is a KFD13-26 type high-efficiency filter, the air draft is 17500 cubic meters per hour, 13 sets of DSW type rotating wing type filter element cleaning devices and 26 AFM-3.5 type filter elements are adopted, and the filter efficiency reaches 99.9 percent; the automatic powder recovery system realizes that the powder recovered by the cyclone separation device is conveyed to the vibrating powder sieve, and the screened powder is sorted into the powder barrel and is mixed with new powder in the powder barrel. The powder is mixed and then fluidized in the powder barrel and conveyed back to the spray gun system for use
As shown in FIG. 4, the curing chamber 7 is provided with heating chambers at its sides, the top and bottom of the curing chamber 7 are communicated with the heating chambers, and the top of the curing chamber 7 is provided with an air pump for supplying power to circulate hot air in the curing chamber. The curing room 7 is arranged at a powder curing station, a drying tunnel system is arranged on the powder curing station, and the drying tunnel system comprises a drying tunnel furnace body, a furnace frame, a furnace opening device, a furnace sealing device, a natural gas heating system, a waste gas discharge system, an automatic temperature control system, a hot air circulation pipeline and the like. The combustion power of a combustion machine of the powder curing furnace is 100 kilocal/h, the power P of a hot air circulating fan is 18.5KW, and the air volume is 32000m3The baking length of the drying tunnel is 36.5 meters, the natural gas heating and hot air circulation mode are adopted, the temperature in the oven is adjusted from room temperature to 220 ℃, and the drying time is 40 min; the drying tunnel furnace body adopts the inner plate and outer plate layering and staggered layer isolation patent technology, the drying tunnel adopts a tunnel type drying tunnel, and a bottom air supply and bottom air return mode is adopted, so that the temperature in the furnace is ensured to be uniform, the air supply economy is good, the airflow organization is reasonable, the workpiece is heated more uniformly, and the coating quality can be ensured. And transferring the workpiece to a cooling station 7 after powder solidification at a powder solidification station 6, wherein the length of the cooling station is 25m, 15 standard sections can be held down for cooling, the cooling time is 38min, transferring the workpiece to a workpiece discharging station 8 after cooling is finished, assembling and delivering goods after workpiece discharging inspection is finished, and the occupied space is small.
The cooling station 8 is a double-track conveying track, and the standard knot is stopped at the cooling station for natural cooling.
The invention also provides an electric appliance control system station which is provided with an operable electric control system, adopts PLC centralized control and touch screen centralized display, and is provided with a master control power switch, a temperature control and display instrument, a voltmeter, a three-phase operation current indicator and air supply and exhaust fan current meters; the drying parameters can be set and modified through the touch screen, an operator can select an operation method according to process requirements, and the running condition of the equipment can be easily known. The temperature control of each heating station adopts a digital display type automatic control instrument, and the temperature of each heating point is displayed and simultaneously the temperature is accurately controlled during working. And emergency stop switches are arranged at main stations of the production line so as to facilitate operation in the working process.
As shown in FIG. 5, a coating process using the coating line for the standard knot of the construction elevator comprises the following steps
(1) After the standard section is loaded in the loading area, the standard section is conveyed to a shot blasting machine through a conveying track for shot blasting, the shot blasting is carried out in a shot cleaning chamber after the standard section is loaded, a shot cleaning gun is manually used for shot cleaning, meanwhile, a filter cartridge dust remover is started for dust removal, and the total dust removal air volume in the filter cartridge dust remover is 28000 and 31000m 3/h;
(2) conveying the standard knot subjected to pill removal into a spraying room, spraying the standard knot with paint by using spray guns on two sides in the process that the standard knot slowly passes through the spraying room, conveying the standard knot out by using a conveying rail after the manual inspection and spraying at the outlet of the spraying room are finished, wherein the spraying room is communicated with a large cyclone device for recovering the paint, and the air volume of the large cyclone device is 17500 cubic meters per hour;
(3) and conveying the sprayed standard knot into a curing room, starting hot air circulation heating in the curing room while conveying to cure the coating, then conveying to a cooling station for a period of time for standing, conveying to a lower part in a lower part area after the standard knot is completely cooled to finish coating, wherein the temperature in the curing room is 180-220 ℃, the curing time is 40-45min, and the cooling time is 35-40 min.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. The utility model provides a construction elevator standard festival coating line which characterized in that: including last district, lower district, delivery track, shot-blasting machine, clear shot room, spray booth, solidification room and cooling station, delivery track passes in proper order and goes up district, shot-blasting machine, clear shot room, spray booth, solidification room, cooling station, the production line that lower district formed a continuous operation, be equipped with the relative impeller head of a plurality of openings on the impeller head inner wall among the shot-blasting machine, this impeller head room and clear shot room intercommunication, be equipped with the clear ball rifle of a plurality of in the clear shot room, the bottom in this clear shot room is equipped with by the recovery unit of clear shot room to the shot-blasting machine slope, makes the spheroid of clearance whereabouts fall back to in the shot-blasting machine, the top in shot-blasting room and clear shot room all communicates a section of thick bamboo dust remover, be equipped with a plurality of mobilizable spray gun in the delivery track both sides in the spray booth, be equipped with heating system in the solidification room and heat the standard festival through.
2. The construction elevator standard knot coating line of claim 1, characterized in that: the shot blasting machine is a centrifugal shot blasting machine, the bottom of a shot blasting chamber of the shot blasting machine is communicated with one end of a horizontally arranged first screw extruder, a vertically upward feeding pipe is arranged at the other end of the first screw extruder, an air pump is arranged on the feeding pipe, one end of a horizontally arranged second screw extruder is connected to the upper end of the feeding pipe, a blanking hopper is arranged below the other end of the second screw extruder, and a plurality of hoses are arranged below the blanking hopper and communicated with the shot blasting machines.
3. The construction elevator standard knot coating line of claim 2, characterized in that: the two sides of the conveying track in the shot cleaning chamber are provided with elevators, the shot cleaning gun is a high-pressure air gun, and the recovery device is a sliding plate which inclines from the shot cleaning chamber to the shot blasting machine.
4. The construction elevator standard knot coating line of claim 1, characterized in that: the spraying room is connected with an automatic powder recovery system, a big cyclone device and a filtering device, the spraying gun in the automatic powder recovery system is communicated with the spraying room and delivers coating to the spraying gun for spraying, the bottom of the spraying room is communicated with the top of the big cyclone device, the bottom of the big cyclone device is communicated with the automatic powder recovery system and delivers the coating back to the spraying room again, the filtering device is communicated with the top of the big cyclone device, and a filter element is arranged in the filtering device.
5. The construction elevator standard knot coating line of claim 1, characterized in that: the side of curing chamber is equipped with the heating chamber, and the top and the bottom of this curing chamber all communicate with the heating chamber, and the top of curing chamber is equipped with the air pump and provides power and make steam circulate in curing chamber.
6. The construction elevator standard knot coating line of claim 1, characterized in that: the cooling station is a double-track conveying rail, and the standard knot is stopped on the cooling station for natural cooling.
7. A coating process using the construction elevator standard knot coating production line of claims 1-6, characterized in that: comprises the following steps
(1) After the standard knot is loaded in the loading area, the standard knot is conveyed to a shot blasting machine through a conveying track for shot blasting, and then the standard knot enters a shot cleaning chamber, a shot cleaning gun is manually used for cleaning shots, and a filter cartridge dust remover is started for removing dust;
(2) conveying the standard knot subjected to pill removal into a spraying room, spraying paint on the standard knot by using spray guns on two sides in the process that the standard knot slowly passes through the spraying room, and conveying the standard knot out of a conveying track after manual inspection and spraying are finished at an outlet of the spraying room;
(3) and conveying the sprayed standard knot into a curing room, starting hot air circulation heating in the curing room while conveying to cure the coating, conveying to a cooling station, staying and standing for a period of time, and conveying to a lower part area after the standard knot is completely cooled to finish coating of the lower part.
8. A construction according to claim 7The coating process of the standard knot of the elevator is characterized in that: the total dust removal air volume in the filter cartridge dust remover is 28000 and 31000m3/h。
9. The coating process for the standard knot of the construction elevator as claimed in claim 7, wherein the coating process comprises the following steps: the spraying room is communicated with a large cyclone device for recovering the coating, and the air volume of the large cyclone device is 17500 cubic meters per hour.
10. The coating process for the standard knot of the construction elevator as claimed in claim 7, wherein the coating process comprises the following steps: the temperature in the curing room is 180-220 ℃, the curing time is 40-45min, and the cooling time is 35-40 min.
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| CN202110322538.4A CN112934546A (en) | 2021-03-25 | 2021-03-25 | Coating production line and coating process for standard knot of construction elevator |
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| CN202110322538.4A CN112934546A (en) | 2021-03-25 | 2021-03-25 | Coating production line and coating process for standard knot of construction elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351411A (en) * | 2021-06-15 | 2021-09-07 | 唐为国 | Full-automatic powder and paint coating line for inner wall and outer wall of gray iron straight pipe |
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| CN215843775U (en) * | 2021-03-25 | 2022-02-18 | 广西建工集团建筑机械制造有限责任公司 | Construction elevator standard festival coating line |
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| JPH09109029A (en) * | 1995-10-19 | 1997-04-28 | Fuji Seisakusho:Kk | Structure surface grinding/polishing/cleaning system |
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| EP3300836A1 (en) * | 2016-09-28 | 2018-04-04 | Cristanini Spa | Apparatus for spraying an abrasive mixture towards a delicate surface for removing writings, drawings or graffiti therefrom |
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| CN113351411A (en) * | 2021-06-15 | 2021-09-07 | 唐为国 | Full-automatic powder and paint coating line for inner wall and outer wall of gray iron straight pipe |
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