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Manufacturing method of plastic central conveying system


source:Central conveying system   release time:2021-04-10 11:29:28




The method of central transportation of materials has been applied in engineering as early as the 19th century, but it is mainly used for grain transportation in ports and factories. It has not been used much in industrial production, especially in chemical production. Since the end of the 20th century, due to The continuous expansion of the processing and application fields of PVC and the continuous expansion of the market scale have promoted the rapid development of the PVC industry. The production of PVC has become large-scale and intensified. The scale of the device has expanded rapidly. The packaging method of small silos and packaging while producing. Gradually replaced by large silos, remote conveying, and automatic packaging, pneumatic conveying technology has also been increasingly used in PVC production.
Central conveying technology. Material conveying is a method of using gas to flow inside the pipeline to convey powder and granular solids. As the conveying medium, air is the most commonly used, but when conveying flammable and explosive powders, other inert gases are also used. Compared with other mechanical conveying methods, the central conveying system has many advantages, so the application in plastic production is increasing. Its advantages are mainly reflected in the closed system, which avoids the flying, damp, and pollution of materials, and also improves the working conditions. During the conveying process, cooling and other operations are carried out at the same time. The volume is small, and the line can be flexibly arranged according to the specific conditions. The equipment is compact, easy to achieve continuity and automatic operation, which is convenient to connect with the continuous process, but the pneumatic conveying power consumption is not imported. Conveying capillary particles is restricted to materials that are prone to static electricity during high-speed movement.
The feeding system is an important part of plastic machinery. Through the rapid development of the plastics industry, large or extra-large plastic machinery has come out one after another and continues to grow. This has put forward higher requirements for the replacement of the feeding system. Traditionally, Manual feeding is the main method, or the material bag is hoisted to the hopper mouth by a crane and then manually added, which is troublesome to operate.
Technical realization elements:
(1) Technical problems solved
In view of the shortcomings of the prior art, the present invention provides a plastic central feeding system, which has the advantages of convenient use, and solves the problem that the feeding of traditional plastic machinery is mainly manual feeding, or the material bag is hoisted to the hopper mouth by a crane and then manually Join, troublesome operation problem.
(2) Technical plan
In order to achieve the above technical problems, the present invention provides such a plastic central feeding system, which includes a console, a vacuum breaking valve, a roots blower, a dust removal bucket, a dust removal solenoid valve, a manual feeding box, a dryer, a material level switch, and a motor , Crushing device, vacuum hopper, first cutoff valve, crusher, proportional valve, material level switch, plastic molding machine, second cutoff valve and electric eye hopper, the console, vacuum breaking valve, roots blower, dust removal There are two barrels, the two vacuum breaking valves are fixedly connected to the output ends of the two Roots blowers, the two consoles are located at the heads of the two Roots blowers, and the two dust removal valves are The solenoid valve is fixedly connected to the top of the two dust removal buckets, and the two dust removal solenoid valves are respectively communicated with a vacuum breaking valve through a vacuum tube.
The material level switch is fixedly connected to the middle of the top of the dryer, the vacuum hopper is fixedly connected to the top of the material level switch, the first cut-off valve is fixedly connected to the top of the vacuum hopper, and the proportional valve is fixedly connected to the vacuum For the concentration of the hopper, the first cut-off valve communicates with the output end of one of the dust removal buckets through a vacuum tube.
The crushing device is fixedly connected to the bottom of the crusher, the output end of the motor is fixedly connected to the crushing device, the crusher is located at the end of the dryer, and the manual feeding box is located above the dryer.
The material level switch is fixedly connected to the top of the plastic molding machine, the electric eye hopper is fixedly connected to the top of the material level switch, the second cutoff valve is fixedly connected to the top of the electric eye hopper, and the second cutoff valve passes through The vacuum tube communicates with the output end of the other dust removal bucket.
Further, a dust removal solenoid valve is fixedly connected to the top of the dust removal bucket, a dust removal valve is fixedly connected to the bottom of the dust removal bucket, and a dust removal bucket is fixedly connected to the bottom of the dust removal valve.
Further, a first shutoff valve is fixedly connected to the bottom of the manual feeding box and the crushing device, and the two first shutoff valves are respectively communicated with a proportional valve through a feeding pipe, and the proportional valve is connected to a vacuum hopper through a feeding pipe. Connected.
Further, a second shut-off valve is fixedly connected to the bottom of the dryer, and the second shut-off valve is fixedly connected to a raw material distribution station through a feed pipe.
Further, a quick connector is fixedly connected to the top of the raw material distribution station, and the quick connector is communicated with the input end of the plastic molding machine through a feeding pipe.
Further, the number of the plastic molding machines is three, and the three plastic molding machines are arranged side by side.
(3) Beneficial effects

The present invention provides a plastic central feeding system, which achieves the following beneficial effects:
1. The plastic central feeding system uses the artificial feeding box, dryer, crusher and plastic molding machine together. The crusher can crush the plastic, and the crushed material is proportional to the raw materials that are manually fed to the manual feeding box. , It is pneumatically conveyed to the vacuum hopper through the proportional valve, and then lowered to the dryer. After the crushed material is heated and dehumidified and dried, the raw material is also conveyed to the inside of the plastic molding machine through pneumatic conveying, which saves time and effort, is convenient to operate, and improves Productivity.

2. The plastic central feeding system uses the dust removal valve, dust removal bucket, dust removal bucket and dust removal solenoid valve to separate the dust during the transportation process to protect the environment of the Roots blower. Dust removal solenoid valve Unscheduled vibration shakes off the dust attached to the dust bag in the dust removal bucket, and the dust removal valve is manually closed on a regular basis and removed from the dust removal bucket to prevent dust from affecting the production environment. It is environmentally friendly.

3. The plastic central feeding system, through the setting of the vacuum breaking valve, the Roots blower works during the system transportation. When the inorganic station needs to transport raw materials, the Roots blower stops at a designated time in time. In the continuous process, the vacuum breaking valve circulates. Roots blower cuts off the conveying system. When the organic platform needs to transport raw materials, the vacuum breaking valve is immediately closed, and the roots blower receives the central feeding system. If there is no more redundant conveying, the roots blower will delay the time and the roots blower will stop rotating. The vacuum breaking valve is continuously powered off and is in a working state that does not consume power, which is energy-saving and environmentally friendly.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the structure of the dryer of the present invention.

In the picture: 1. Console; 2. Vacuum breaking valve; 3. Roots blower; 4. Dust cleaning valve; 5, Dust removal bucket; 6, Dust cleaning bucket; 7, Dust removal solenoid valve; 8, Raw material distribution station; 9 , The first shut-off valve; 10, manual feeding box; 11, dryer; 12, material level switch; 13, motor; 14, crushing device; 15, vacuum hopper; 16, the first air shut-off valve; 17, crusher ;; 18, proportional valve; 19, quick connector; 20, material level switch; 21, plastic molding machine; 22, second cut-off valve; 23, electric eye hopper; 24, second cut-off valve.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It can be seen that the described implementation examples replace the embodiments of the present invention, rather than all the embodiments. The embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art without attempting to carry out labor reforms, fall within the protection scope of the present invention.

Please refer to Figure 1-2, a plastic central feeding system, including console 1, vacuum breaking valve 2, Roots blower 3, dust removal bucket 5, dust removal solenoid valve 7, manual feeding box 10, dryer 11, material level Switch 12, motor 13, crushing device 14, vacuum hopper 15, first cutoff valve 16, crusher 17, proportional valve 18, material level switch 20, plastic molding machine 21, second cutoff valve 22 and electric eye hopper 23, The number of console 1, vacuum breaking valve 2, Roots blower 3, and dust removal bucket 5 should be replaced by two. The two vacuum breaking valves 2 are fixedly connected to the output terminals of the two Roots blowers 3, and the two consoles 1 are placed in two. At the head of a roots blower 3, one of the two roots blowers 3 is usually in standby state. If another roots blower 3 fails or is timed to automatically switch, the switching valve will stop the roots blower 3 gas. Connect to the conveying system to separate the faulty conveying Roots blower 3 from the system. The two dust removal solenoid valves 7 are fixedly connected to the top of the two dust removal buckets 5, and the two dust removal solenoid valves 7 pass through the vacuum tube and the vacuum break valve 2 respectively. Connected, through the setting of the vacuum breaking valve 2, the Roots blower 3 works during system transportation. When the inorganic station needs to transport raw materials, the Roots blower 3 stops alternately for a specified time. During the alternate process, the vacuum breaking valve 2 is changed to Roots. The blower 3 cuts off the conveying system. When the organic station needs to transport the raw materials, the vacuum breaking valve 2 is immediately closed, and the Roots blower 3 is received by the central feeding system. If the conveying is no longer needed, the Roots blower 3 will reach the interval time and the Roots blower 3 When the rotation is stopped, the vacuum breaking valve 2 is continuously powered off, and it is in a working state that does not consume power, which is energy-saving and environmentally friendly.

The top of the dust removal bucket 5 is fixedly connected with a dust removal solenoid valve 7, the bottom of the dust removal bucket 5 is fixedly connected with a dust removal valve 4, and the bottom of the dust removal valve 4 is fixedly connected with a dust removal bucket 6, through the dust removal valve 4, the dust removal bucket 5, The dust removal bucket 6 and the dust removal solenoid valve 7 are used in conjunction, and the dust is separated by the dust removal bucket 5 during the transportation process to protect the environment of the Roots blower 3. The dust removal solenoid valve 7 vibrates from time to time to attach the dust removal cloth bag in the dust removal bucket 5 to the attachment The dust shakes off, and the ash cleaning valve 4 is manually closed periodically and removed from the ash cleaning bucket 6 to prevent the dust from affecting the production environment and is environmentally friendly.

The material level switch 12 is fixedly connected to the middle of the top of the dryer 11, the vacuum hopper 15 is fixedly connected to the top of the material level switch 12, the first cut-off valve 16 is fixedly connected to the top of the vacuum hopper 15, and the proportional valve 18 is fixedly connected to the vacuum hopper. 15 is vertical, the first cut-off valve 16 communicates with the output end of one of the dust removal buckets 5 through a vacuum tube.

The crushing device 14 is fixedly connected to the bottom of the crusher 17, the output end of the motor 13 is fixedly connected to the crushing device 14. The crusher 17 is located at the end of the dryer 11, the manual feeding box 10 is placed above the dryer 11, and the manual feeding box 10 and the bottom of the crushing device 14 are fixedly connected with a first shutoff valve 9. The two first shutoff valves 9 are respectively connected with a proportional valve 18 through a feeding pipe, and the proportional valve 18 is connected with a vacuum hopper 15 through a feeding pipe, and the dryer 11 A second cut-off valve 24 is fixedly connected to the bottom of the second cut-off valve 24. The second cut-off valve 24 is fixedly connected to a raw material distribution station 8 through a feeding pipe. The top of the raw material distribution station 8 is fixedly connected to a quick connector 19, which is connected to the plastic The input end of the molding machine 21 is connected.

The material level switch 20 is fixedly connected to the top of the plastic molding machine 21. The number of plastic molding machines 21 is three, and the three plastic molding machines 21 are arranged side by side. The raw materials used by the plastic molding machines 21 in each zone are different, and they are distributed by the raw materials. After the station 8 is selected, the second cut-off valve 22, the first cut-off valve 9 and the second cut-off valve 24 are automatically switched according to the parameters during the conveying process, and different raw materials are conveyed to different plastic molding machines 21 , The electric eye hopper 23 is fixedly connected to the top of the level switch 20, the second cut-off valve 22 is fixedly connected to the top of the electric eye hopper 23, and the second cut-off valve 22 is connected to the output end of the other dust removal bucket 5 through a vacuum tube. The feeding box 10, the dryer 11, the crusher 17 and the plastic forming machine 21 are used together. The crusher 17 can crush the plastic. The crushed material is proportional to the raw material fed to the manual feeding box 10 through the proportional valve 18. Pneumatically conveyed to the vacuum hopper 15, and then lowered to the dryer 11. After the crushed material is heated and dehumidified and dried, the raw material is also conveyed to the inside of the plastic molding machine 21 by pneumatic conveying, which saves time and effort, is convenient to operate, and improves production. effectiveness.
When in use, the crusher 17 can crush the plastic. The crushed crushed material is proportional to the raw materials manually fed to the manual feeding box 10, and is pneumatically transported to the vacuum hopper 15 through the proportional valve 18, and then lowered to the dryer 11 for crushing. After the material is heated, dehumidified and dried, the material is also conveyed to the inside of the plastic molding machine 21 by pneumatic conveying. During the conveying process, the dust is separated by the dust removal bucket 5 to protect the environment of the Roots blower 3. The dust removal solenoid valve 7 does not Vibrate regularly to shake off the dust attached to the dust removal cloth bag in the dust removal bucket 5, and the dust removal valve 4 is manually closed periodically and the dust removal bucket 6 is removed.
It should be noted that, here, relationships such as the first and second are referred to as only distinguishing one entity or operation from another entity or operation, and does not necessarily require or imply one of these entities or operations. , The terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles, or equipment that can include multiple elements include those elements other than those that are not explicitly listed The other elements of the process, method, article or equipment are inherent elements.
Although the embodiments of the present invention have been completely and described, for those of ordinary skill in the art, it will be understood that various changes, modifications, substitutions, and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. Variations, the scope of the present invention is defined by the supplementary claims and their equivalents.