Fluorescent lamp tube recovery processing method and equipment

Abstract

The invention provides a fluorescent tube recovery processing method and equipment, and the method comprises the steps: crushing a fluorescent tube into disintegrating slag in a negative pressure state; performing mercury removal on the smoke dust by using the leacheate; leacheate is continuously sprayed in the dust suppression channel, then the fluorescent tube disintegrating slag is fed into the ultrasonic cleaning tank through the dust suppression channel to be cleaned, and fluorescent powder is removed; and after cleaning is completed, the fluorescent lamp tube disintegrating slag in the ultrasonic cleaning tank is taken out, a certain amount of cleaning liquid is discharged to a physicochemical water treatment system, the same amount of cleaning liquid is supplemented, water is supplemented to the discharged cleaning liquid, a cleaning agent is supplemented, and then the PH value is adjusted for standby application. According to the invention, the dust suppression channel is arranged for process transfer of the lamp tube, so that the problem of dust overflow in the process of transferring the lamp tube slag from the crushing process to the cleaning process can be avoided, and the working environment and personal safety can be protected; and meanwhile, the method is beneficial to reducing the consumption of cleaning liquid and improving the treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection, and in particular to a method and equipment for recycling fluorescent lamps. Background Art

[0002] Since fluorescent tubes contain toxic substances such as mercury, if they are discarded at will, it will cause environmental pollution. Therefore, it is necessary to recycle and properly dispose of the discarded fluorescent tubes. At present, the recycled fluorescent tubes are mainly crushed, solid residue treated, waste gas treated and cleaning liquid treated to ensure that toxic substances are not lost.

[0003] The invention patent application with the existing application publication number CN116329239A discloses a method for harmless and resource-based treatment of waste mercury fluorescent tubes, which belongs to the field of hazardous waste treatment technology. The treatment scheme includes negative pressure crushing, two-stage negative pressure circulating spray absorption, absorption liquid dosing sedimentation, use of circulating spray liquid to clean solid slag and recover fluorescent powder, solid slag sorting and grading resource utilization, etc.

[0004] As in the lamp tube treatment method in the above scheme, after the lamp tube is crushed, the exhaust gas is adsorbed and the solid slag is dried, but no protective measures are taken for the solid slag conveying process. This process will still cause the loss of smoke and dust containing toxic substances. Long-term work will affect the workplace, cause personal injury and environmental pollution, so it is necessary to improve the existing process flow. Summary of the invention

[0005] In view of this, the present invention proposes a fluorescent tube recycling method and equipment that can effectively prevent personal injury and environmental pollution caused by the transportation of tube debris, so as to solve the problem of lack of protective measures in the existing tube processing process.

[0006] The technical solution of the present invention is achieved in this way:

[0007] In one aspect, the present invention provides a method for recycling fluorescent lamps, comprising the following steps:

[0008] S1. Put fluorescent tubes into the crushing equipment in batches, and crush the fluorescent tubes into fragments under negative pressure;

[0009] S2. The smoke dust generated during the crushing process is sent to a secondary spray tower to remove mercury from the smoke dust with a washing liquid;

[0010] S3, diverting the washing liquid of the secondary spray tower to the dust suppression channel, continuously spraying in the dust suppression channel, and then sending the fluorescent lamp fragments into the ultrasonic cleaning tank through the dust suppression channel, and cleaning the fluorescent lamp fragments with the cleaning liquid to remove the fluorescent powder;

[0011] S4. After the cleaning is completed, the fluorescent lamp tube debris in the ultrasonic cleaning tank is taken out, and a certain amount of cleaning liquid is discharged to the physical and chemical water treatment system, and then an equal amount of cleaning liquid is added;

[0012] S5, replenishing the discharged cleaning liquid with water, adding cleaning agent, and then adjusting the pH value for standby use;

[0013] S6. After performing steps S1 to S5 for multiple times, mercury precipitation treatment is performed.

[0014] Based on the above technical solution, preferably, step S4 includes:

[0015] S41, taking out the fluorescent lamp tube debris from the ultrasonic cleaning tank using a drain basket;

[0016] S42, discharging a certain amount of cleaning liquid into a filtering device to filter out solid residues;

[0017] S43, discharge the filtered cleaning liquid to the physical and chemical water treatment system.

[0018] On the basis of the above technical solution, preferably, step S6 includes:

[0019] S61. Setting a threshold value of mercury content in the cleaning solution;

[0020] S62, after the mercury content of the cleaning liquid reaches a threshold, the cleaning liquid and the spraying liquid are merged into a sedimentation tank;

[0021] S63, adjusting the pH value of the cleaning liquid and the spraying liquid converging in the sedimentation tank;

[0022] S64, adding a precipitant to the sedimentation tank to precipitate mercury;

[0023] S65. Filter out the precipitated mercury through a filtering device.

[0024] On the other hand, the present invention provides a fluorescent tube recycling and processing device, which uses the above-mentioned processing method, including a crushing device, a secondary spray tower, a dust suppression channel, an ultrasonic cleaning tank, a filtering device and a sedimentation tank, wherein:

[0025] The crushing chamber of the crushing equipment is connected to the secondary spray tower through a pipeline;

[0026] The dust suppression channel is installed at the discharge port of the crushing equipment, and the dust suppression channel corresponds to the ultrasonic cleaning tank;

[0027] The filtering device is connected with the ultrasonic cleaning tank and the sedimentation tank through pipelines;

[0028] The secondary spray tower is connected to the sedimentation tank through a pipeline.

[0029] On the basis of the above technical solution, preferably, the crushing equipment includes a machine body, a crushing assembly, a feeding hopper and a dust suction pipe, wherein:

[0030] A crushing assembly is provided inside the machine body;

[0031] The feeding hopper is arranged on the outer wall of the machine body, and the feeding hopper is communicated with the interior of the machine body;

[0032] The dust suction duct is arranged on the machine body, and the dust suction duct is communicated with the interior of the machine body.

[0033] On the basis of the above technical solution, preferably, the crushing equipment further includes a guide block and an air knife, wherein:

[0034] The guide block is a triangular prism structure, one side of the guide block is connected to the inner wall of the machine body, and the guide block faces the feed hopper and the crushing assembly with an inclined surface;

[0035] The wind knife is arranged in the machine body, the wind port of the wind knife corresponds to the dust suction duct, and the wind outlet direction of the wind knife is parallel to the inclined surface of the guide block toward the crushing component.

[0036] On the basis of the above technical solution, preferably, the dust suppression channel includes a pipeline, a sprinkler head and a discharge port, wherein:

[0037] One end of the pipe is connected to the interior of the body;

[0038] The spray head is installed on the pipeline, and the spray head is connected to the water circulation component of the secondary spray tower;

[0039] The discharge port is arranged on the other end of the pipeline, and the discharge port corresponds to the ultrasonic cleaning tank.

[0040] On the basis of the above technical solution, preferably, the filtering device includes a filter box, a bracket, a filter bag, a water supply pipe and a flip assembly, wherein:

[0041] A bracket is provided inside the filter box;

[0042] The filter bag is arranged on the bracket;

[0043] One end of the water supply pipe is connected to and penetrates the filter box, and the other end is connected to and penetrates the ultrasonic cleaning tank and the sedimentation tank;

[0044] The flip assembly is arranged in the filter box, and the flip assembly is used for flipping the filter bag.

[0045] On the basis of the above technical solution, preferably, the flip assembly includes a cylinder and a sleeve, wherein:

[0046] The cylinder is arranged in the filter box;

[0047] The sleeve is arranged on the movable end of the cylinder, and the sleeve corresponds to the bag bottom of the filter bag.

[0048] On the basis of the above technical solution, preferably, the filtering device further includes a telescopic tube, and the flip assembly further includes a three-way tube and a branch tube, wherein:

[0049] The telescopic pipe is connected and penetrated with the water supply pipe, and the telescopic pipe can slide relative to the water supply pipe, and the pipe opening of the telescopic pipe corresponds to the filter bag;

[0050] One end of the tee is connected to the movable end of the cylinder, one end extends into the sleeve, and the other end is a free end;

[0051] The sleeve is provided with a plurality of through holes, and a plurality of branch pipes are arranged. One end of the branch pipe is connected with and penetrates the three-way pipe, and the other end is connected with the sleeve and penetrates the through hole.

[0052] The fluorescent tube recycling method and equipment of the present invention have the following beneficial effects over the prior art:

[0053] (1) By setting up a dust suppression channel for the process transfer of the lamp tube, the dust deposition is broken into the ultrasonic cleaning tank by spraying the spray liquid, which can avoid the problem of dust overflow during the transfer of the lamp tube slag from the crushing process to the cleaning process, which is beneficial to protecting the working environment and personal safety; at the same time, the cleaning liquid in the ultrasonic cleaning tank adopts a circulating discharge and liquid replenishment working mode, which is beneficial to reduce the consumption of the cleaning liquid and improve the processing efficiency;

[0054] (2) In the fluorescent tube processing equipment, a guide block and an air knife are arranged in the crushing device, so that when feeding the fluorescent tube, the tube can be guided so that the tube falls directly onto the crushing assembly to ensure the crushing effect; at the same time, the air knife is inclined by the guide block, which can form an air curtain to prevent the dust generated during crushing from overflowing through the feeding hopper, which is beneficial to protecting the environment and human health;

[0055] (3) In the filter device of the present equipment, a flip assembly for flipping the filter bag is provided, and the water supply pipe is extended to the bag opening of the filter bag through the telescopic pipe. In this way, after the spray liquid and the cleaning liquid are filtered, the flip assembly can flip the filter bag to discharge the filter residue and realize backwashing, thereby ensuring the continuous operation of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A framework diagram of a fluorescent tube recycling and processing device according to the present invention;

[0058] Figure 2 A structural diagram of a crushing device and a dust suppression channel of a fluorescent tube recycling and processing device of the present invention;

[0059] Figure 3 A three-dimensional diagram of a filter device of a fluorescent tube recycling and processing device of the present invention;

[0060] Figure 4 A three-dimensional diagram of a flip assembly of a fluorescent tube recycling and processing device of the present invention;

[0061] Figure 5 A structural diagram of a filter bag of a fluorescent tube recycling and processing device of the present invention;

[0062] Figure 6 A gas path diagram of the fluorescent tube recycling and processing equipment of the present invention;

[0063] Figure 7 A liquid passage diagram of the fluorescent tube recycling and processing equipment of the present invention;

[0064] Figure 8 A structural diagram of a potassium permanganate spray tower provided in the fluorescent tube recycling and processing equipment of the present invention;

[0065] In the figure: 1. Crushing equipment; 11. Machine body; 12. Crushing assembly; 13. Feed hopper; 14. Dust suction pipe; 15. Guide block; 16. Air knife; 2. Secondary spray tower; 3. Dust suppression channel; 31. Pipeline; 32. Spray head; 33. Discharge port; 4. Ultrasonic cleaning tank; 5. Filter device; 51. Filter box; 52. Bracket; 53. Filter bag; 531. Bag body; 532. Bottom plate; 54. Water supply pipe; 55. Flip assembly; 551. Cylinder; 552. Sleeve; 553. Tee pipe; 554. Branch pipe; 56. Telescopic pipe; 501. Through hole; 6. Sedimentation tank; 7. Potassium permanganate spray tower. DETAILED DESCRIPTION

[0066] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] like Figures 1 to 8 As shown, the fluorescent tube recycling and processing equipment of the present invention includes a crushing device 1, a secondary spray tower 2, a dust suppression channel 3, an ultrasonic cleaning tank 4, a filtering device 5 and a sedimentation tank 6.

[0068] like Figure 1 , Figure 6 and Figure 7 As shown, the crushing chamber of the crushing equipment 1 is connected to the secondary spray tower 2 through a pipeline; the dust suppression channel 3 is installed at the discharge port of the crushing equipment 1, and the dust suppression channel 3 corresponds to the ultrasonic cleaning tank 4; the filtering device 5 is connected to the ultrasonic cleaning tank 4 and the sedimentation tank 6 through a pipeline; the secondary spray tower 2 is connected to the sedimentation tank 6 through a pipeline;

[0069] As shown in the above structure, when the device is used, the fluorescent tube is put into the crushing equipment 1 for crushing, and the crushed tube fragments are output through the dust suppression channel 3 into the ultrasonic cleaning tank 4 for ultrasonic cleaning to remove the fluorescent powder; then the ultrasonic cleaning tank 4 is discharged, and part of the cleaning agent is discharged into the filter device 5 for filtration, and then recycled.

[0070] When cleaning the next batch of lamp tubes, replenish the cleaning liquid in the ultrasonic cleaning tank 4;

[0071] At the same time, in the crushing equipment 1, the smoke and dust generated during crushing is sent to the secondary spray tower 2 for spraying and mercury removal;

[0072] Specifically, the spray tower is filled with MnO2 filler, and dilute sulfuric acid is used as the eluent, and the following reaction occurs to elute mercury into the eluent.

[0073] MnO2+2Hg=Hg2MnO2

[0074] Hg2MnO2+4H2SO4+MnO2=2HgSO4+2MnSO4+4H2O

[0075] The single-stage absorption efficiency of this method for mercury can reach 95% to 99%, and the two-stage absorption rate is greater than 99.7%;

[0076] Specifically, smoke is fed into the bottom of the secondary spray tower 2 for desorption treatment, and the MnO2 in the spray tower can improve the effect of the desorption treatment.

[0077] After secondary filtration of smoke and dust, the gas is treated by a gas-water separation tank and an activated carbon adsorption tank, and then discharged through an induced draft fan to increase pressure.

[0078] In some embodiments, Figure 8 As shown, after the smoke dust is filtered through the secondary stage, it is sprayed again through the potassium permanganate spray tower 7 to remove the residual mercury through oxidation reaction;

[0079] Specifically, since the spraying medium of the potassium permanganate spray tower 7 is different from the spraying medium of the secondary spray tower 2, a water treatment tank is separately provided for the potassium permanganate spray tower 7.

[0080] like Figure 2As shown, the crushing device 1 includes a body 11, a crushing assembly 12, a feeding hopper 13 and a dust suction pipe 14, wherein the crushing assembly 12 is arranged inside the body 11; the feeding hopper 13 is arranged on the outer wall of the body 11, and the feeding hopper 13 is communicated with the inside of the body 11; the dust suction pipe 14 is arranged on the body 11, and the dust suction pipe 14 is communicated with the inside of the body 11;

[0081] As described above, when the crushing device 1 is working, the fluorescent tube is put into the machine body 11 through the feeding hopper 13, and is crushed by the crushing assembly 12, and then discharged through the dust suppression channel 3, and the smoke is sent to the secondary spray tower 2 through the dust suction pipe 14;

[0082] Specifically, the crushing assembly 12 may adopt a crushing roller, a jaw crusher or an impact crusher.

[0083] like Figure 2 As shown, the crushing device 1 further includes a guide block 15 and an air knife 16, wherein the guide block 15 is a triangular prism structure, one side of the guide block 15 is connected to the inner wall of the body 11, and the guide block 15 faces the feed hopper 13 and the crushing assembly 12 with an inclined surface; the air knife 16 is arranged in the body 11, the air outlet of the air knife 16 corresponds to the dust collection duct 14, and the air outlet direction of the air knife 16 is parallel to the inclined surface of the guide block 15 toward the crushing assembly 12;

[0084] As in the above structure, when the fluorescent tube is put into the machine body 11 through the feeding hopper 13, it will fall directly onto the crushing assembly 12 under the guidance of the guide block 15, thereby ensuring the crushing effect;

[0085] At the same time, the wind knife 16 will generate a wind curtain to block the feeding hopper 13 to prevent the smoke and dust generated during crushing from overflowing through the feeding hopper 13, and the air outlet of the wind knife 16 faces the dust collection duct 14. When the smoke and dust are disturbed by the air flow of the wind knife 16, they can be quickly discharged through the dust collection duct 14.

[0086] like Figure 2 As shown, the dust suppression channel 3 includes a pipe 31, a spray head 32 and a discharge port 33, wherein one end of the pipe 31 is connected to the interior of the body 11; the spray head 32 is installed on the pipe 31, and the spray head 32 is connected to the water circulation component of the secondary spray tower 2; the discharge port 33 is arranged on the other end of the pipe 31, and the discharge port 33 corresponds to the ultrasonic cleaning tank 4;

[0087] As described above, after the fluorescent lamp is crushed by the crushing assembly 12, it is discharged through the dust suppression channel 3, and the lamp fragments flow out through the pipe 31. At the same time, the spray head 32 performs spraying to wet the lamp fragments, thereby avoiding the problem of dust overflow during the process transfer, thereby protecting the working environment and personal health;

[0088] Specifically, the inner bottom wall of the pipe 31 and the body 11 are arranged in an inclined structure so that the lamp tube debris can be automatically discharged;

[0089] In some embodiments, the inner bottom wall of the machine body 11 is provided with a weighing scale or a vibrating screen to weigh the crushed slag or to promote the flow of the crushed slag; of course, the weighing scale and the vibrating screen can also be used in an integrated manner;

[0090] In this example, a blocking member, such as a baffle, needs to be provided to selectively close the pipeline 31, thereby facilitating metering and weighing.

[0091] In some embodiments, the discharge port 33 is connected and sealed to the ultrasonic cleaning tank 4 to prevent smoke and dust from overflowing.

[0092] Specifically, the spray head 32 is connected to the water circulation component of the secondary spray tower 2, and realizes water circulation together with the spray tower. When replenishing water to the ultrasonic cleaning tank 4, it can be replenished through the secondary spray tower 2;

[0093] Specifically, when the ultrasonic cleaning tank 4 is drained, the discharged cleaning liquid is processed and then reversely supplied to the secondary spray tower 2;

[0094] like Figure 3 As shown, the filter device 5 includes a filter box 51, a bracket 52, a filter bag 53, a water supply pipe 54 and a flip assembly 55, wherein the filter box 51 is provided with a bracket 52; the filter bag 53 is arranged on the bracket 52; one end of the water supply pipe 54 is connected to and penetrates the filter box 51, and the other end is connected to and penetrates the ultrasonic cleaning tank 4 and the sedimentation tank 6; the flip assembly 55 is arranged in the filter box 51, and the flip assembly 55 is used to flip the filter bag 53;

[0095] As in the above structure, when the cleaning liquid in the ultrasonic cleaning tank 4 and the spraying liquid in the secondary spray tower 2 are filtered, they are supplied to the water supply pipe 54 of the filter device 5 and sent to the filter bag 53 through the water supply pipe 54. The filter bag 53 filters out the fixed residues, and the liquid seeps out through the filter bag 53. The liquid is reused after being treated.

[0096] Then, the filter bag 53 is turned over by the turning assembly 55 to clear out the solid residue, which is then transferred to other processes for treatment;

[0097] In this structure, the filter box 51 is provided with two openings, one for discharging liquid and the other for discharging solid residue to avoid crossover.

[0098] Specifically, before filtering the cleaning liquid in the ultrasonic cleaning tank 4 and the spraying liquid in the secondary spray tower 2, a precipitation treatment is performed:

[0099] First, the pH value of the mixture of the spray liquid and the cleaning liquid is adjusted, and then Na2S is added to convert Hg2+ into precipitate, and then FeSO4 is added to adjust the pH, flocculate the precipitate, and remove the precipitate through the filter bag 53;

[0100] The specific reactions are:

[0101] HgSO4+Na2S→HgS↓+Na2SO4

[0102] FeSO4+Na2S→FeS↓+Na2SO4

[0103] like Figure 4 As shown, the flip assembly 55 includes a cylinder 551 and a sleeve 552, wherein the cylinder 551 is disposed in the filter box 51; the sleeve 552 is disposed on the movable end of the cylinder 551, and the sleeve 552 corresponds to the bag bottom of the filter bag 53;

[0104] As in the above structure, when the filter bag 53 is emptied, since the port of the filter bag 53 is fixed by the bracket 52, the cylinder 551 drives the sleeve 552 to move, pushing the bottom of the filter bag 53 so that the bottom of the bag is turned out from the bag mouth, so that the filtered residue can be removed and the filtering can be continued.

[0105] like Figure 3 and Figure 4 As shown, the filter device 5 also includes a telescopic tube 56, and the flip assembly 55 also includes a three-way tube 553 and a branch tube 554, wherein the telescopic tube 56 is connected and connected with the water supply tube 54, and the telescopic tube 56 can slide relative to the water supply tube 54, and the tube mouth of the telescopic tube 56 corresponds to the filter bag 53; one end of the three-way tube 553 is connected to the movable end of the cylinder 551, one end extends into the sleeve 552, and the other end is a free end; a plurality of through holes 501 are provided on the sleeve 552, and a plurality of branch tubes 554 are provided, one end of the branch tube 554 is connected and connected with the three-way tube 553, and the other end is connected to the sleeve 552 and connected with the through hole 501;

[0106] As in the above structure, in order to prevent the cleaning liquid and the spraying liquid sent by the water supply pipe 54 from splashing out during filtration, the telescopic pipe 56 is used to extend the liquid outlet to the bag opening of the filter bag 53 to prevent the splashing problem, thereby ensuring the filtration effect;

[0107] When flushing the filter bag 53, the cylinder 551 drives the sleeve 552 to move through the tee pipe 553, pushing the filter bag 53 to turn over, and then the flushing agent is supplied through the free end of the tee pipe 553, so that the flushing agent flows into the branch pipe 554 through the tee pipe 553, and then sprays out through the through hole 501 to backwash the filter bag 53;

[0108] During this process, the telescopic tube 56 is pushed back into the water supply pipe 54 to avoid interfering with the turning over of the filter bag 53;

[0109] After the backwashing is completed, the water supply pipe 54 falls back, relying on its own weight and cooperating with the subsequent outflow of cleaning liquid and spraying liquid, so as to prompt the filter bag 53 to complete the reset.

[0110] like Figure 5 As shown, the filter bag 53 includes a bag body 531 and a bottom plate 532, wherein the bag opening of the bag body 531 is connected to the bracket 52, and the bottom plate 532 is arranged at the other end of the filter bag 53 away from the bag opening. When the cylinder 551 is actuated, the sleeve 552 pushes the bottom plate 532 to complete the flipping of the filter bag 53, thereby preventing the filter bag 53 from being damaged by the flipping action.

[0111] Specifically, the bottom plate 532 is configured to be a circular concave shape, and the bottom plate 532 is concave toward the inside of the filter bag 53 so as to fit the sleeve 552 and prevent the filter bag 53 from sliding sideways, thereby ensuring the bag turning effect;

[0112] At the same time, this structure allows the solid residue to slide around easily. After the bag is turned over, the solid residue can slide into the filter box 51, which can prevent the solid residue from remaining on the bottom plate 532 to ensure the cleaning effect.

[0113] When there are large pieces of residue in the ultrasonic cleaning tank 4 and the filtering device 5 cannot perform filtering treatment, a separate cleaning device can be provided to perform cleaning.

[0114] The light tube recycling method of the present invention comprises the following steps:

[0115] S1, putting fluorescent tubes into the crushing device 1 in batches, and crushing the fluorescent tubes into fragments under negative pressure;

[0116] S2, sending the smoke dust generated in the crushing process into the secondary spray tower 2, and removing mercury from the smoke dust with a washing liquid;

[0117] S3, diverting the washing liquid from the secondary spray tower 2 to the dust suppression channel 3, continuously spraying in the dust suppression channel 3, and then sending the fluorescent lamp fragments into the ultrasonic cleaning tank 4 through the dust suppression channel 3, and cleaning the fluorescent lamp fragments with the cleaning liquid to remove the fluorescent powder;

[0118] S4, after the cleaning is completed, the fluorescent lamp tube debris in the ultrasonic cleaning tank 4 is taken out, and a certain amount of cleaning liquid is discharged to the physical and chemical water treatment system, and then an equal amount of cleaning liquid is added;

[0119] S5, replenishing the discharged cleaning liquid with water, adding cleaning agent, and then adjusting the pH value for standby use;

[0120] S6. After performing steps S1 to S5 for multiple times, mercury precipitation treatment is performed.

[0121] Step S4 includes:

[0122] S41, taking out the fluorescent lamp tube debris from the ultrasonic cleaning tank 4 with a drain basket;

[0123] S42, discharge a certain amount of cleaning liquid into the filter device 5 to filter out solid residues;

[0124] S43, discharge the filtered cleaning liquid to the physical and chemical water treatment system.

[0125] Step S6 includes:

[0126] S61. Setting a threshold value of mercury content in the cleaning solution;

[0127] S62, after the mercury content of the cleaning liquid reaches a threshold value, the cleaning liquid and the spraying liquid are merged into the sedimentation tank 6;

[0128] S63, adjusting the pH value of the cleaning liquid and the spraying liquid converging in the sedimentation tank 6;

[0129] S64, adding a precipitant to the sedimentation tank 6 to precipitate mercury;

[0130] S65, filtering out the precipitated mercury through the filtering device 5.

[0131] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for recycling fluorescent tubes, characterized in that: The following steps are involved: S1, putting fluorescent tubes into the crushing device (1) in batches, and crushing the fluorescent tubes into fragments under negative pressure; S2, sending the smoke dust generated in the crushing process into the secondary spray tower (2), and removing mercury from the smoke dust with a washing liquid; S3, diverting the washing liquid from the secondary spray tower (2) to the dust suppression channel (3), continuously spraying in the dust suppression channel (3), and then sending the fluorescent lamp tube debris into the ultrasonic cleaning tank (4) through the dust suppression channel (3), and cleaning the fluorescent lamp tube debris with the cleaning liquid to remove the fluorescent powder; S4, after the cleaning is completed, the broken fluorescent lamp residue in the ultrasonic cleaning tank (4) is taken out, and a certain amount of cleaning liquid is discharged to the physical and chemical water treatment system, and then an equal amount of cleaning liquid is added; S5, replenishing the discharged cleaning liquid with water, adding cleaning agent, and then adjusting the pH value for standby use; S6. After performing steps S1 to S5 for multiple times, mercury precipitation treatment is performed.

2. The fluorescent tube recycling method according to claim 1, characterized in that: The step S4 comprises: S41, using a drain basket to remove the fluorescent lamp tube debris from the ultrasonic cleaning tank (4); S42, discharging a certain amount of cleaning liquid into the filtering device (5) to filter out solid residues; S43, discharge the filtered cleaning liquid to the physical and chemical water treatment system.

3. The fluorescent tube recycling method according to claim 1, characterized in that: The step S6 comprises: S61. Setting a threshold value of mercury content in the cleaning solution; S62, after the mercury content of the cleaning liquid reaches a threshold value, the cleaning liquid and the spraying liquid are merged into a sedimentation tank (6); S63, adjusting the pH value of the cleaning liquid and the spraying liquid converging in the sedimentation tank (6); S64, adding a precipitant to the sedimentation tank (6) to precipitate mercury; S65, filtering out the precipitated mercury through the filtering device (5).

4. A fluorescent tube recycling and processing equipment, using the processing method according to any one of claims 1 to 3, characterized in that: The invention comprises a crushing device (1), a secondary spray tower (2), a dust suppression channel (3), an ultrasonic cleaning tank (4), a filtering device (5) and a sedimentation tank (6), wherein: The crushing chamber of the crushing equipment (1) is connected to the secondary spray tower (2) via a pipeline; The dust suppression channel (3) is installed at the discharge port of the crushing equipment (1), and the dust suppression channel (3) corresponds to the ultrasonic cleaning tank (4); The filtering device (5) is connected to the ultrasonic cleaning tank (4) and the sedimentation tank (6) through pipelines; The secondary spray tower (2) is connected to the sedimentation tank (6) through a pipeline.

5. The fluorescent tube recycling and processing equipment according to claim 4, characterized in that: The crushing device (1) comprises a body (11), a crushing assembly (12), a feeding hopper (13) and a dust suction pipe (14), wherein: The crushing assembly (12) is arranged inside the machine body (11); The feeding hopper (13) is arranged on the outer wall of the machine body (11), and the feeding hopper (13) is communicated with the interior of the machine body (11); The dust collection pipe (14) is arranged on the machine body (11), and the dust collection pipe (14) is connected to the interior of the machine body (11).

6. The fluorescent tube recycling equipment according to claim 5, characterized in that: The crushing device (1) further comprises a guide block (15) and an air knife (16), wherein: The guide block (15) is a triangular prism structure, one side of the guide block (15) is connected to the inner wall of the machine body (11), and the guide block (15) faces the feeding hopper (13) and the crushing assembly (12) with an inclined surface; The wind knife (16) is arranged in the machine body (11), the air outlet of the wind knife (16) corresponds to the dust suction duct (14), and the air outlet direction of the wind knife (16) is parallel to the inclined surface of the guide block (15) toward the crushing component (12).

7. The fluorescent tube recycling and processing equipment according to claim 5, characterized in that: The dust suppression channel (3) comprises a pipeline (31), a spray head (32) and a discharge port (33), wherein: One end of the pipe (31) is connected to the interior of the machine body (11); The spray head (32) is installed on the pipeline (31), and the spray head (32) is connected to the water circulation component of the secondary spray tower (2); The discharge port (33) is arranged on the other end of the pipeline (31), and the discharge port (33) corresponds to the ultrasonic cleaning tank (4).

8. The fluorescent tube recycling equipment according to claim 4, characterized in that: The filtering device (5) comprises a filter box (51), a bracket (52), a filter bag (53), a water supply pipe (54) and a turnover assembly (55), wherein: The support (52) is arranged inside the filter box (51); The filter bag (53) is arranged on the bracket (52); One end of the water supply pipe (54) is connected to and penetrates the filter box (51), and the other end is connected to and penetrates the ultrasonic cleaning tank (4) and the sedimentation tank (6); The turning assembly (55) is arranged in the filter box (51), and the turning assembly (55) is used to turn over the filter bag (53).

9. The fluorescent tube recycling and processing equipment according to claim 8, characterized in that: The flip assembly (55) comprises a cylinder (551) and a sleeve (552), wherein: The cylinder (551) is arranged in the filter box (51); The sleeve (552) is arranged on the movable end of the cylinder (551), and the sleeve (552) corresponds to the bag bottom of the filter bag (53).

10. The fluorescent tube recycling equipment according to claim 9, characterized in that: The filtering device (5) further comprises a telescopic tube (56), and the flip assembly (55) further comprises a three-way tube (553) and a branch tube (554), wherein: The telescopic tube (56) is connected to and penetrates the water supply pipe (54), and the telescopic tube (56) can slide relative to the water supply pipe (54), and the pipe opening of the telescopic tube (56) corresponds to the filter bag (53); One end of the three-way pipe (553) is connected to the movable end of the cylinder (551), one end extends into the sleeve (552), and the other end is a free end; The sleeve (552) is provided with a plurality of through holes (501), and the branch pipe (554) is provided with a plurality of through holes (501). One end of the branch pipe (554) is connected to and penetrates the three-way pipe (553), and the other end is connected to the sleeve (552) and penetrates the through hole (501).

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