CN201604067U - A kind of equipment for color TV CRT glass cleaning - Google Patents

Abstract

The utility model discloses a device for cleaning the glass of a color TV CRT. The glass cleaning device of the utility model adopts two-stage dust removal filter devices and three dust collectors of large, medium and small, which effectively reduces the dust pollution of workshops. It includes a main machine, a material lifting device and a dust removal and filtering device. The main machine includes a frame, an electric control box, and a drum installed on the frame. The material lifting device sends glass scraps into the drum of the main machine for processing, and is characterized by : The dust removal device includes a first-level dust removal filter device, a second-level dust removal filter device and a fan, the first-level dust removal device is connected to the drum through the exhaust pipeline, and the second-level dust removal filter device is connected to the first-level dust removal filter device through the exhaust pipeline . After being filtered and collected by the secondary dust removal and filtering device, the dust basically stays in the equipment, which greatly reduces the amount of dust in the discharged air, which meets the national environmental protection standards. In this way, the solid waste such as dust generated in the production process is basically prevented from polluting the environment, and the dust emission is 1.73mg/m ³ .

Description

A kind of equipment for color TV CRT glass cleaning

technical field

The utility model relates to a glass processing device, in particular to a device for cleaning the glass of a color TV CRT.

Background technique

The material composition of color TV CRT display is quite complex, including glass, various metals and various chemical auxiliary materials, etc. From the perspective of resource and environmental science, waste picture tubes are extremely polluting to the environment, but at the same time they also have potential resource regeneration sex. For example, picture tubes contain some heavy metals such as lead and mercury. Once these substances enter the human living environment, they will seriously endanger human health. But these dangerous substances are also useful renewable resources. If the glass in the picture tube and these rare metals can be fully utilized, the consumption of human resources can be greatly reduced.

Among the discarded color TV CRTs, the fluorescent screen glass and leaded conical tube glass accounted for more than 85%. The inner and outer surfaces of cone glass contain coatings such as graphite layer and iron oxide. Practice has shown that if these coating layers can be removed before the recovery of leaded glass, it will be beneficial to the recycling and utilization of leaded glass. The process of removing these paint layers is called glass cleaning. At present, there are two main cleaning methods for cone glass: wet cleaning and dry cleaning.

Wet cleaning also includes ultrasonic cleaning, acid-base cleaning and other methods. Dry cleaning includes high-pressure air blast sandblasting, plasma cleaning, and dry grinding.

The ultrasonic cleaning method uses physical effects such as cavitation, radiation pressure, and acoustic flow generated when ultrasonic waves propagate in the liquid medium of the cleaning tank to make the coating on the surface of the tapered tube glass fall off. This method uses water or other chemical solvents as the medium, and the cleaning waste liquid discharged after production and use will cause great pollution to the environment. Therefore, further work on the prevention and control of secondary pollution is required.

The acid-base cleaning method takes advantage of the characteristics of glass that is not resistant to hydrofluoric acid corrosion. Immersing the conical glass in hydrofluoric acid for a while and then taking it out can completely remove all coating compounds on the inner and outer surfaces of the picture tube, but this method also produces waste liquid.

The abrasives that can be used in the high-pressure air blasting method include fine sand particles, small iron balls, plastic particles, etc., and the abrasives are blown against the glass surface by air pressure, and the coating material falls off. This method works well, but the amount of abrasive used in the cleaning process is large and the production cost is high.

The plasma cleaning method utilizes the characteristics of high plasma temperature, high energy density, and controllable atmosphere. The free arc generated from the plasma generator undergoes mechanical compression, thermal compression, and self-magnetic compression to make the arc into a plasma arc of different diameters. The column irradiates the part of the object that needs to be cleaned, so that the irradiated substance undergoes a series of complex physical and chemical processes such as melting, evaporation, and combustion, and finally detaches from the surface of the object, thereby realizing the removal of pollutants. Plasma cleaning is an advanced and environmentally friendly cleaning technology, but the equipment is expensive and the cost is high.

Compared with wet cleaning, dry grinding method is a method of removing the coating layer on the surface of the cone glass without adding any medium and without using chemical additives. The method is to crush the conical glass and put it into the vibrating dry mill. After a period of self-oscillating self-grinding, the composite coating material on the surface will be extruded and peeled off, the glass will be further broken, and the dust and broken glass will be separated. As a product becomes renewable lead glass. A comprehensive comparison of various cleaning technologies for the cone glass of the picture tube shows that the use of dry cleaning technology will not cause secondary pollution problems, which is conducive to environmental protection, and at the same time, the equipment is simple and the cost is low.

The existing glass dry grinding and cleaning device generally adopts the rolling grinder dry grinding method, that is, adding broken glass into a rotating drum for physical dry grinding. When the coating layer on the glass surface is dry ground and separated from the glass, use With a certain separation method, the dust containing graphite components produced by dry grinding is separated from the glass particles, and the processed cullet can be recovered. Using the drum dry grinding method can clean the cone glass without using other media, thus avoiding secondary pollution and realizing clean production. During the dry grinding process, the glass particles are squeezed and collided with each other in the drum to produce a huge sound, which becomes the source of sound pollution in the factory. In addition, because the dry grinding device is not absolutely sealed, the harmful dust generated during the dry grinding process will If the collection is incomplete or unreasonable, it will fly out of the device and pollute the environment.

Utility model content

The purpose of this utility model is to provide a kind of equipment for color TV CRT glass cleaning. This equipment is beneficial to improve the concentration and recovery efficiency of dust generated in the glass cleaning process, reduce the content of harmful dust discharged into the air, and realize safe and qualified production process.

The purpose of this utility model can be achieved through the following technical measures: a kind of equipment for color TV CRT glass cleaning, including host, material lifting device and dust removal filter device, said host includes frame and electric control box, and is installed in The drum on the frame, the material lifting device sends the broken glass into the drum of the main machine for processing, and it is characterized in that: the dust removal device includes a first-level dust removal filter device, a second-level dust removal filter device and a fan, and the first-level dust removal device passes through The exhaust air pipeline is connected with the drum, and the secondary dust removal filter device is connected with the primary dust removal filter device through the exhaust air pipeline. Thus, the dust generated in the drum is sucked out by the fan and enters the first-stage dust removal filter device through the exhaust pipe, and the primary filter is performed by the first-stage dust removal filter device, and the remaining dust after the primary filter enters the second-stage dust removal filter device for further processing. filter. In the primary dust removal filter device, fine broken glass and most of the dust are deposited, and a small part of dust enters the secondary dust removal filter device. After being filtered and collected by the secondary dust removal and filtering device, the dust basically stays in the equipment, which greatly reduces the amount of dust in the discharged air, which meets the national environmental protection standards.

The drum is in the shape of a hexagonal cylinder with a hexagonal cross-section and closed at both ends. The inner wall of the drum is a high-temperature wear-resistant material layer. The six sides of the drum are evenly distributed with small holes, and one side of the drum body is provided with a valve. The high-temperature wear-resistant material layer is made of polyurethane (PU) glue, which can reduce the working noise of the machine and prolong the service life of the machine. The outer wall of the drum can be made of iron plate with a thickness of 6mm.

The first-stage dust removal filter device includes a small dust collector and a middle dust collector, and the second-stage dust removal filter device includes a large dust collector; A dust suction exhaust outlet is connected, and the first dust suction exhaust outlet is set at the bearing position of the drum; the middle dust collector is connected with the small dust collector through the exhaust pipeline; the large dust collector is connected through the exhaust air The pipeline is connected with the intermediate dust collector to collect and process the remaining dust filtered by the primary dust removal filter device.

The top of the large dust collector is provided with an external air outlet leading to the outside of the factory building.

The glass cleaning equipment also includes a vibrating screen filter set under the drum, the vibrating screen filter is provided with a second dust suction outlet, and the second dust suction exhaust port of the vibrating screen filter passes through the exhaust The air pipeline is connected with the middle dust collector, and the dust generated in the drum falls into the vibrating screen filter through the small holes on the drum, and can be sucked into the middle dust collector through the second dust suction outlet. In addition, the processed glass scraps in the drum are discharged from the valve port on the drum and fall into the vibrating screen, and then the vibrating screen separates the glass scraps from the dust attached to the scraps, and the dust is discharged by the second suction The dust outlet is sucked into the dust collector.

A sealing cover is also provided outside the drum, which is used to prevent the dust from overflowing during the processing and isolate processing noise at the same time.

The material lifting device includes a conveyor belt for conveying glass scraps and a storage hopper for storing glass scraps to be processed. The storage hopper is arranged above the drum, and the glass scraps enter the drum through a valve on the drum.

The frame is box-shaped welded by channel steel plates on four sides, and the rotatable roller is erected between two opposite side walls of the frame.

The electric control box is equipped with a frequency converter that can adjust the rotation speed of the drum, so that the drum can rotate at different speeds according to the amount or demand of the glass.

Compared with the existing glass cleaning equipment, the utility model has the following advantages:

1. The equipment for color TV CRT glass cleaning of this utility model is equipped with a dust removal filter device, wherein, the first-stage dust removal filter device is provided with a dust removal vent at the drum bearing, which avoids a large amount of dust that occurs when the drum valve is opened at the end of the work. The secondary dust removal and filtering device further reduces the dust generated during the dry-cleaning process of the cone glass, effectively reducing the dust pollution of the factory building. At the same time, an external air outlet is set to basically collect the lead-containing graphite dust generated during the dry-cleaning process of the glass. At the same time, it prevents solid waste pollution such as dust in the production process. For cleaning the lead-containing cone glass in CRT glass, the production practice proves that the dust emission is 1.73mg/m ³ .

2. The inner wall of the drum of this equipment is made of high-temperature wear-resistant material layer made of polyurethane (PU) glue, which is beneficial to reduce the noise during the dry grinding process of glass, and adopts a sealed drum shell. When the equipment is running under load, it is 1m away from the equipment, etc. The effective sound level (Leq) is not more than 92dB(A), which realizes sound insulation and noise reduction in the production process.

3. This equipment is a rolling grinding machine, which has the characteristics of beautiful appearance, reasonable structure, convenient operation, stable operation, low noise, high grinding efficiency, etc., and does not need to add media during the glass cleaning process, which realizes the separation of dust and glass. Reach 293kg/single cycle time (40min);

4. The electric control box of this equipment is equipped with a domestic frequency converter to adjust the speed of the roller, so that the roller can rotate at different speeds according to the amount or demand of glass.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the equipment that is used for color TV CRT glass cleaning of the present utility model;

Fig. 2 is a side view of the host of the glass cleaning equipment of Fig. 1;

Fig. 3 is a sectional view of the host of the glass cleaning equipment of Fig. 1;

Fig. 4 is a front view of the main unit of the glass cleaning device in Fig. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 has shown the overall structure schematic diagram of the equipment that the utility model is used for color TV CRT glass cleaning, and this equipment is especially used for cleaning the cone glass that color TV CRT contains lead. As shown in the figure, the glass cleaning equipment includes a main machine, a material lifting device and a dust removal and filtering device. The main machine includes a frame 14, an electric control box 13, and a drum 11 installed on the frame. The electric control box is equipped with a domestic frequency conversion The device adjusts the speed of the drum, so that the drum can rotate at different speeds according to the amount or demand of glass. The frame 14 is welded by channel steel plates on four sides, and the drum 11 is a rotatable drum, which is erected between two opposite frame walls. The electric control box 13 is made up of independent closed box, can be arranged outside the frame, controls the operation of main frame internal device, controls the running work of main frame by the instruction of operation panel. In order to realize the electrical control of the equipment and complete the predetermined processing procedure. The outer wall of the drum 11 can be made of an iron plate with a thickness of 6mm, which is a hexagonal cylindrical shape with a hexagonal cross-section and closed at both ends. The inner wall of the drum is a high-temperature wear-resistant material layer made of polyurethane (PU) glue, which can reduce The working noise of the machine can be reduced, and the service life of the machine can be extended. The six sides of the cylinder 11 are evenly distributed with small holes, and one side of the cylinder body is provided with a valve 12 . In addition, as shown in the side view of the main machine shown in FIG. 2 , the drum is also provided with a first dust suction and air outlet 15 . In order to prevent dust from spilling during glass processing, a seal cover 3 is provided outside the drum to isolate processing noise, and a working platform 9 is provided next to the frame 11. Workers can stand on the platform 9 to observe the operation of the drum 11 in the main machine.

The feeding device includes a conveyor belt 1 for conveying glass scraps and a storage hopper 2 for storing glass scraps to be processed. The storage hopper 2 is arranged above the drum 11 and the sealing cover 3, and the glass scraps are sent into the storage hopper 2 by the conveyor belt 1. Enter the cylinder from the valve 12 on the cylinder 11 for dry cleaning.

As shown in Figure 1, the dust removal device includes a primary dust removal filter device, a secondary dust removal filter device and a fan. The dust removal and filtering device is connected with the host through the exhaust pipe, and can be placed near the host. The first-stage dust removal and filtering device includes a small dust collector 6 and a middle dust collector 7, the small dust collector and the middle dust collector are connected through an exhaust pipeline, and the middle dust collector is connected with the drum. The secondary dust removal and filtering device includes a large dust collector 5, which is connected to the middle dust collector 6 of the primary dust removal and filtering device. The large, medium and small dust collectors are each equipped with a fan, and the large dust collector The fans of the dust collector and the small dust collector are arranged inside the respective dust collectors, and the fan 8 of the middle dust collector 7 is arranged on the exhaust pipeline connected with the drum, and is fixed on the frame. Wherein, the small dust collector 7 is connected to the first dust suction air outlet 15 on the drum through the exhaust pipeline, as shown in Figure 2, the first dust suction air outlet 15 is arranged at the bearing of the drum, thereby, the drum The dust generated inside is sucked out by the fan and enters the first-stage dust removal filter device through the exhaust pipe, and the first-stage dust removal filter device performs primary filtration, and the remaining dust after the primary filter enters the second-stage dust removal filter device, and the second-stage dust removal filter device Collect and process the remaining dust filtered by the primary dust removal filter device for further filtration. At the same time, an external air outlet 4 is arranged on the top of the large dust collector 5 to discharge the incompletely collected micro dust to the outside of the factory building, effectively reducing the dust pollution of the factory building.

As shown in Figure 3, a vibrating screen filter 16 is provided below the drum 11, and a second dust suction exhaust port 17 is arranged on the vibrating screen filter 16. The central dust collector 7 of the dust removal and filtering device is connected, so that during the glass cleaning process of the drum 11, the dust in the drum falls into the vibrating screen filter through the small holes on the drum 11, and can be discharged from the second dust suction outlet 17. Inhale in the middle dust collector 7, then send in the large dust collector through the exhaust pipeline.

As shown in Figure 4, when the glass scraps are processed in the drum 11, the scraps can be discharged from the valve 12 on the drum and fall into the vibrating screen, and then the vibrating screen 16 separates the glass scraps from the scraps. Attached dust, the dust is sucked into the dust collector 7 by the second dust suction outlet 17 again for collection and treatment, and the separated glass scraps are discharged from the discharge port 18 on the vibrating screen filter, and are received by the receiving trolley 10. Ship out.

The working process of this glass cleaning equipment is: the starter motor 8 drives the cylinder 11 to rotate around the axis, and the vibrating screen filter screen 16 and the dust removal and filtering device start running synchronously. The glass scrap in the drum 11 is dry-ground with the wear-resistant rubber lining the drum wall, and the graphite layer on the glass surface is extruded and peeled off. As the fan starts to run, a negative pressure is formed in the large, medium and small dust collectors, and the dust in the drum begins to be sucked into the dust collector, and part of the graphite powder peeled off in the drum passes through the first dust suction outlet 15 on the drum. Enter the dust removal filter device; the other part falls into the vibrating screen filter 16 through the small hole of the drum, and enters the dust removal system through the second dust suction outlet 17. After the drum runs, the drum valve 12 is opened, and the broken glass falls into the vibrating screen. At this time, the graphite dust electrostatically adhered to the surface of the broken glass is basically separated from the broken glass after being treated by the vibrating screen. It is sucked into the dust removal equipment for temporary storage, and the broken glass is used as a product to become recycled lead glass.

The glass cleaning equipment of the utility model adopts a two-stage dust removal filter device and three dust collectors of large, medium and small, which effectively reduces the dust pollution of the workshop. During the whole process from cleaning the glass to leaving the equipment, the dust removal and filtering device is always in working condition. The dust removal filter device runs the fan at high speed to form a negative pressure in the drum, and the dust and fine glass in the drum are sucked into the dust removal filter device through the first dust suction outlet and the second dust suction outlet, and the first stage dust removal filter In the device, the fine broken glass and most of the dust are deposited, and a small part of the dust enters the secondary dust filter device. After being filtered and collected by the secondary dust removal and filtering device, the dust basically stays in the equipment, which greatly reduces the amount of dust in the discharged air, which meets the national environmental protection standards. In this way, the pollution of the environment by solid waste such as dust generated in the production process is basically prevented, and the dust emission is 1.73mg/m3.

This equipment can not only realize the cleaning of CRT lead-containing cone glass, but also can be widely used in various industries, such as plastics, ceramics, jewelry and stamping parts, rack workpieces, especially providing ideal polishing processing technology for complex shapes.

Claims (10)

1. one kind is used for the equipment that colour TV CRT glass cleans, comprise main frame, carry materials device and dedusting filter, described main frame comprises frame and electric cabinet, and be installed on cylinder on the frame, carrying materials device sends into glass crushed aggregate in the cylinder of main frame and handles, it is characterized in that: described dust arrester comprises primary dust removing filter, two-stage dust removal filter and blower fan, the primary dust removing device links to each other with cylinder by the air draft pipeline, and the two-stage dust removal filter links to each other with the primary dust removing filter by the air draft pipeline.

2. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 1, it is characterized in that: it is hexagonal hexagonal tubular that described cylinder is the cross section, closed at both ends, inner wall of rotary drum is the high-temperature and wear-proof layer, six faces of cylinder are evenly distributed with aperture, and a side of cylinder stack shell offers valve.

3. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 2, it is characterized in that: described high-temperature and wear-proof layer is made by polyurethane adhesive.

4. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 2 is characterized in that: the outer wall of described cylinder is that iron plate about 6mm is made by thickness.

5. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 1, it is characterized in that: described primary dust removing filter comprises dust arrester among a little dust arrester and, described two-stage dust removal filter comprises a big dust arrester; Described little dust arrester links to each other with the first dust suction exhaust outlet on the cylinder by the air draft pipeline, and the described first dust suction exhaust outlet is arranged on the place, position of bearings of cylinder; Middle dust arrester links to each other with little dust arrester by the air draft pipeline; Described big dust arrester links to each other with middle dust arrester by the air draft pipeline.

6. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 5 is characterized in that: described big dust arrester top is provided with and leads to the outer outer exhaust outlet of factory building.

7. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 5, it is characterized in that: described glass cleaning equipment comprises that also one is arranged on the sieve screen pack that shakes of cylinder below, the described sieve screen pack that shakes is provided with the second dust suction exhaust outlet, and the second dust suction exhaust outlet of the described sieve screen pack that shakes links to each other with described middle dust arrester by the air draft pipeline.

8. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 7, it is characterized in that: described cylinder also is provided with a seal closure outward, is used to prevent the excessive of process dust, isolates the processing noise simultaneously.

9. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 1, it is characterized in that: the described materials device of carrying comprises conveyer belt that transmits glass crushed aggregate and the storage bin hopper that stores glass crushed aggregate to be processed, described storage bin hopper is arranged on the top of cylinder, and glass crushed aggregate is entered in the cylinder by the valve on the cylinder.

10. a kind of equipment that colour TV CRT glass cleans that is used for according to claim 1 is characterized in that: described frame for four sides channel-section steel steel plate be welded box-like, described pivotal roller shelves is located between the two relative frame side walls.

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