A control method for a glass batching production line with a dust removal material recovery device

Abstract

The present invention discloses a control method for a glass batching production line with a dust removal material recovery device, which is characterized by the following steps: when the batching program is started, the dust collector is turned on at the same time; the raw material weighing conveyor belt conveys and discharges materials to the mixer, and after the discharging is completed, dry mixing starts. At this time, the dust unloading motor of the dust collector starts to discharge dust; after the dry mixing is completed, water is added and the dust unloading motor stops discharging dust; after the water addition is completed, wet mixing is entered. After mixing, discharging starts, and the broken glass covers the raw materials and is sent to the kiln head bin, and the cycle is repeated in sequence. The control method for the glass batching production line with a dust removal material recovery device of the present invention optimizes the control method of the production line, ensures uniform mixing of the mixture, improves the product quality, and has strong practicability and good application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass production, and more specifically, relates to a control method for a glass batching production line with a dust removal material recovery device. Background Art

[0002] Float glass is widely used. In the industry, in the batching production line, the main directions for the treatment of dust collection materials are to treat them as waste or recycle them. The treatment of waste must be carried out by a qualified environmental protection treatment unit for unified treatment. The recycling treatment is mainly carried out by production enterprises according to the amount of dust collection materials, and it is mixed with the mixture.

[0003] For ordinary dust collection material recovery, mainly the fan, pulse, and discharging motor are respectively started when starting up, and the fan, pulse, and discharging motor are respectively stopped when shutting down, which only meets the daily operation of the dust collector and does not combine the process with the dust removal and ash discharging operation. For the dust removal and ash discharging operation of the dust collection material, the operation of the process and the control of the ash discharging time are not achieved, and it is easy to cause the unmixed material to be directly discharged onto the belt and sent to the kiln head bin. The composition of the dust ash is miscellaneous, the fine powder is high, the ash discharging amount is not accurately controlled, and the process time is incorrect, which will directly affect the quality of the batch material. The existing batching production method cannot utilize the dust collection material in a timely and effective manner. Summary of the Invention

[0004] The object of the present invention is to solve the problems existing in the prior art, and provide a control method for a glass batching production line with a dust removal material recovery device that optimizes the control of the production line, ensures uniform mixing of the mixture, and improves the product quality.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: The control method for the glass batching production line with a dust removal material recovery device provided, is characterized in that it includes the following steps: When the batching program starts, the dust collector is started at the same time; The raw material weighing conveyor belt conveys the discharged material to the mixer, and when the discharge ends, dry mixing starts. At this time, the ash discharging motor of the dust collector starts to discharge ash; After the dry mixing ends, water is added, and the ash discharging motor stops discharging ash; After the water addition ends, wet mixing is entered. After mixing, discharging starts, and the broken glass covers the raw material and is sent to the kiln head bin, and the cycle is repeated in sequence.

[0006] To make the above technical solution more detailed and specific, the present invention also provides the following further preferred technical solutions to obtain satisfactory practical effects: During a mid-course shutdown, the dust collector stops working.

[0007] During batching, during a mid-course shutdown, the dust collector stops working.

[0008] When the dust collector stops working, the fan stops first, and the pulse solenoid valve stops after a delay of 15 - 25 minutes.

[0009] The batching electronic scale feeds materials according to the recipe. Each electronic scale starts from the tare weight and feeds materials according to the set recipe value. After reaching the weighing value, it waits. After all the electronic scales finish feeding and meet the discharging conditions, they start discharging materials into the mixer.

[0010] When the mixer is dry-mixing, the ash discharge motor runs to start discharging ash and stops after reaching the set time of 1 - 90S.

[0011] After the water addition is completed, the wet-mixing timing starts. The set time is 90 - 110S. After the wet-mixing is completed, the mixer door opens for discharging.

[0012] The discharging timing of the mixer can be set in the batching user program, which is 30 - 45S. When the mixer starts discharging, the cullet electronic scale discharges synchronously. The cullet covers the raw materials and is sent to the kiln head bin. The ratio of raw materials to clinker is less than 20%.

[0013] After being mixed in the mixer, the raw materials are transported to the kiln head feed bin by the original melting conveyor belt and the transport trolley below.

[0014] When the batching program enters dry-mixing, the point output of the PLC output module drives the ash discharge motor to start. The start running time is set through the batching program screen. After reaching the running time, the PLC point stops outputting and the ash discharge motor stops automatically.

[0015] Compared with the prior art, the present invention has the following advantages: The glass batching production line control method with a dust removal material recycling device of the present invention optimizes the control production line method, ensures uniform mixing of the mixture, improves product quality, realizes sustainable recycling of environmental protection dust removal materials without falling to the ground, and has strong practicability and good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The content expressed by the drawings of this specification and the marks in the drawings will be briefly described below:

[0017] Figure 1 It is a schematic structural diagram of a glass batching production line with a dust removal material recycling device of the present invention.

[0018] The marks in the figure are: 1. Raw material weighing conveyor belt; 2. Feeding bin; 3. Dust collector; 4. Pulse solenoid valve; 5. Control box; 6. Discharge hopper; 7. Ash discharge motor; 8. Fan; 9. Exhaust pipe; 10. Mixer; 11. Original melting conveyor belt; 12. Transport trolley; 13. Kiln head feed bin, 14. Slide valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following is a further detailed description of the specific embodiments of the present invention by describing the embodiments with reference to the drawings.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0021] As is well known, the dust collected by the dust collector has a very complex composition and a large amount of fine powder, making it difficult to recycle and use. If not used properly, it will affect the product quality. A common situation is that at the end of a shift, the dust hopper of the dust collector is either empty or mostly full of materials, which indicates that the process control of the fan, pulse valve, and discharging motor is not reasonably matched.

[0022] Generally, the fan sucks the dust at the dust collection point into the dust collector 3. After filtering through the filter cloth, the air is discharged outward, and the dust is adsorbed on the filter cloth. Since the filter cloth has dense pores for filtering and the fan has a large wind force, the pulse solenoid valve 4 just blows the powder on the filter bag down, but it is then sucked back onto the filter bag by the fan and forms a cycle. Synchronous shutdown of the fan and the pulse valve is not conducive to thoroughly purging the filter bag, resulting in an unsatisfactory dust collection effect next time.

[0023] In the present invention, at the start of batching, the fan 8 is started, and the pulse solenoid valve 4 starts the reverse blowing pulse. When batching stops, the fan 8 stops, and the reverse blowing pulse stops after a delay of 15 - 25 minutes. When batching stops, first stop the fan 8, and then close the pulse solenoid valve 4, so that the materials on the filter bag fall into the discharging hopper 6 for entering the mixer 10 to be mixed with the batching. This method can solve the phenomenon that the materials on the filter bag are cyclically sucked and blown, and thoroughly blow the accumulated materials on the filter bag into the discharging hopper 6, facilitating the ash discharging link. At the same time, the filter bag that has been thoroughly blown clean is just ready for the next startup to obtain a better dust collection effect.

[0024] The dust discharging design of the dust collector by the manufacturer mainly follows the working process of the dust collector and is not matched with the process. Generally, when batching starts, the fan, pulse, and discharging motor start simultaneously. When batching ends, the dust collector fan, pulse, and ash discharger shut down simultaneously, resulting in incomplete purging of the accumulated materials on the filter bag; the discharging does not follow the process flow (for example, a full hopper of materials is all added to one or several batches of batching, and it cannot be evenly distributed to the batching of the entire shift, which does not meet the process requirements; and during the discharging process after the mixing in the mixer 10 is completed, keeping the discharging motor always on will cause the dust collected with a complex and uneven composition to be directly discharged onto the batching without being mixed and sent to the kiln head).

[0025] In the present invention, the electrical start-stop control part of the ash discharging motor 7 of the dust collector 3 is separated from the control of the dust collector and is instead controlled by the batching PLC (according to the dry mixing or wet mixing process flow) to output timing control. Moreover, the running time of the ash discharging motor is controllable (such as 1 - 90S), achieving automatic control. When the batching program enters the dry mixing state, the dry mixing point of the PLC output module outputs to drive the ash discharging motor 7 to start. The start running time is set through the batching program screen. After reaching the running time, the PLC point stops outputting, and the ash discharging motor automatically stops.

[0026] Disconnect the electrical control of the ash discharging motor 7 of the dust collector from the dust collector itself and instead control it by the batching PLC program. When the PLC program enters dry mixing, it outputs a command to drive the ash discharging motor 7 to start running and start discharging ash. After reaching the set time (1 - 90S), it stops (the running cycle of the discharging motor is stable, the time is flexibly adjustable, the discharging amount is uniform, and the discharging is combined with the mixing of the batching), enabling the discharging motor to start and stop in a fixed state during each batching cycle, effectively avoiding problems such as material mixing caused by the ash discharger being always open, uneven components, and direct use without mixing.

[0027] After the water addition is completed, wet mixing timing starts, with a time of 90 - 110S. The amount of water added is equal to the water content that a complete batch of batching must contain minus the water content contained in various raw materials, which is the amount of water that the water scale needs to supplement. If the difference in the equation is greater than zero, the water scale supplements water. If the difference in the equation is less than or equal to zero, the water scale no longer supplements water. After wet mixing is completed, the mixer opens the door to discharge the material. Assume that a complete batch of batching dry base material (i.e., without water) is 6000KG, and the process requires a water content of 4%. Then the wet base number containing water is 6000 / (1 - 4%) = 6250KG. The wet base number - the dry base number - minus the water content contained in various raw materials separately (assume 200KG) = the remaining water that needs to be supplemented by the water scale (50KG).

[0028] In the present invention, a glass batching production line with a dust removal material recovery device is provided with a raw material weighing conveyor belt 1 for conveying raw materials of corresponding quality. The raw materials are sent into the feeding bin 2 via the raw material weighing conveyor belt 1. Below the feeding bin 2, there is a mixer 10. On the feeding pipe of the feeding bin 2, there is a flap valve 14 for controlling the feeding of raw materials into the mixer 10. Above the feeding bin 2, there is a dust collector 3. Under the action of the fan 8, the dust is filtered by the filter cloth in the dust collector and discharged through the exhaust pipe. Inside the dust collector 3, there is also a pulse solenoid valve 4 for shaking the dust removal material on the filter cloth into the lower discharge hopper 6. The discharge hopper 6 is connected to the mixer 10, and below the discharge hopper, there is an ash discharging motor 7 for controlling the discharging.

[0029] In the present invention, after the raw materials and the dust removal materials are mixed in the mixer 10, they are conveyed by the lower raw melting conveyor belt 11 and the conveying trolley 12 into the kiln head feeding bin 13 for the next step of glass production operation.

[0030] The specific working process is as follows: The batching program starts → the batching equipment starts (the dust collector fan and pulse start for dust collection and ash blowing) → the batching electronic scale adds materials according to the recipe → each electronic scale starts adding materials from the tare weight and adds materials according to the set recipe value until the weighing value is reached and then waits → after all the electronic scales finish adding materials and meet the discharging conditions, they start discharging materials into the mixer → after all the electronic scales finish discharging materials, dry mixing starts (at this time, the dust discharging motor of the dust collector starts discharging ash) → after dry mixing ends, water is added (the dust discharging motor stops discharging ash) → after adding water ends, wet mixing timing starts → after the wet mixing time is up, the mixer door opens for discharging material timing → after the mixer finishes discharging materials, the cullet electronic scale starts discharging materials → the cullet covers the raw materials and is sent to the kiln head bin, and this process repeats in sequence. During the process, if there is a mid-course shutdown, the dust collector stops working, and thus the dust collection and ash discharging in the entire batching cycle automatically circulate according to the technological process.

[0031] The control method for a glass batching production line with a dust removal material recycling device in the present invention realizes that the dust removal material does not land and is recycled automatically according to the process requirements. It reduces the manual handling link and environmental protection cost; improves the utilization efficiency of raw materials and reduces the cost of glass production raw materials; effectively reduces the secondary transfer (labor cost) of the dust collection material and the environmental protection operation cost; through the planning of the process layout, the dust collection material and the batch material are rationally matched and used according to the process requirements, improving the utilization rate of the dust collection material; and realizes the automatic control of the process and the recycling process.

[0032] The control method for a glass batching production line with a dust removal material recycling device in the present invention optimizes the control method of the production line, ensures the uniform mixing of the mixture, improves the product quality, and has strong practicability and good application prospects.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention has been described exemplarily above with reference to the accompanying drawings. However, the present invention is not limited to the above manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention or directly applied to other occasions, they all fall within the protection scope of the present invention.

Claims

1. A control method for a glass batching production line with a dust removal material recovery device, characterized in that, A mixer is provided below the feed bin, and a dust collector is provided above the feed bin. Under the action of a fan, the dust is filtered by the filter cloth in the dust collector and then discharged through the exhaust pipe. A pulse solenoid valve is also provided in the dust collector to shake the dust removal material on the filter cloth into the discharge hopper below, and the discharge hopper is connected to the mixer; it includes the following steps: The batching program is started, and at the same time, the dust collector is turned on; The raw material weighing conveyor belt conveys and discharges materials to the mixer. After the discharge is completed, dry mixing starts. At this time, the ash discharge motor of the dust collector starts to discharge ash; After the dry mixing is completed, water is added, and the ash discharge motor stops discharging ash; After the water addition is completed, wet mixing is entered. After mixing, discharging starts, and the broken glass covers the raw material and is sent to the kiln head bin, and the cycle repeats; When the dust collector stops working, the fan stops first, and the pulse solenoid valve stops after a delay of 15 - 25 minutes.

2. The control method for a glass batching production line with a dust removal material recovery device according to claim 1, characterized in that: During batching, if the machine stops midway, the dust collector stops working.

3. The control method of the glass batching production line with a dust removal material recovery device according to claim 1, characterized in that: The batching electronic scale adds materials according to the recipe. Each electronic scale starts from the tare weight and adds materials according to the set recipe value. After reaching the weighing value, it waits. After all the electronic scales have finished adding materials and meet the discharge conditions, discharging starts to the mixer.

4. The control method of the glass batching production line with a dust removal material recovery device according to claim 1, characterized in that: When the mixer is dry mixing, the ash discharge motor runs to discharge ash and stops after reaching the set time of 1 - 90S.

5. The control method of the glass batching production line with a dust removal material recovery device according to claim 1, characterized in that: After the water addition is completed, wet mixing timing is entered, with a set time of 90 - 110S. After the wet mixing is completed, the mixer door opens for discharging.

6. The control method of the glass batching production line with a dust removal material recovery device according to claim 5, characterized in that: The discharging timing of the mixer can be set in the batching user program, 30 - 45S. The mixer starts to discharge materials, and the broken glass electronic scale discharges materials synchronously. The broken glass covers the raw material and is sent to the kiln head bin, and the ratio of raw material to clinker is below 20%.

7. The control method of the glass batching production line with a dust removal material recovery device according to claim 6, characterized in that: After being mixed in the mixer, the raw material is conveyed by the original melting conveyor belt and the conveying trolley below to the kiln head feed bin.

8. The control method of the glass batching production line with a dust removal material recovery device according to claim 1, characterized in that: When the batching program enters dry mixing, the point output of the PLC output module drives the ash discharge motor to start. The start running time is set through the batching program screen. After reaching the running time, the PLC point stops outputting, and the ash discharge motor automatically stops.

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