A desulfurization waste liquid environmentally friendly purification and recycling device

Abstract

The present invention relates to the field of wastewater treatment, and specifically to an environmentally friendly purification and reuse device for desulfurization waste liquid, including a rotating drum, a filter plate frame, a filter press plate and an adjusting device; the rotating drum can be rotatably arranged; the filter plate frame is fixedly arranged and located inside the rotating drum, and the filter plate frame is provided with filter holes and a filter residue collection device, and the filter residue collection device is used to collect the filter residue into the filter plate frame; the filter press plate can be moved up and down in the filter plate frame; the adjusting device is connected to the filter press plate by transmission. In the present invention, the adjusting device drives the filter press plate to move up and down to filter the filter residue, and as the volume of the filter residue increases, the stroke of the filter press plate gradually decreases and the downward pressure gradually increases, so that the filter residue is accurately filtered according to the volume and compactness of the filter residue, while ensuring the compactness and uniformity of the filter residue filtration, and improving the filter pressing efficiency and filter pressing effect.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment, and in particular to an environmentally friendly purification and recycling device for desulfurization waste liquid. Background Art

[0002] Coal coking, also known as high-temperature coal distillation, is a coal conversion process that uses coal as raw material, heats it to about 950°C in an airtight condition, and produces coke through high-temperature distillation, while obtaining coal gas, coal tar, and recovering other chemical products. During the process of coal coking, the sulfur in the raw coal enters the coal gas in the form of hydrogen sulfide. If it is directly used as fuel gas without desulfurization and purification, a large amount of sulfur dioxide waste gas will be generated to pollute the atmospheric environment.

[0003] Coking coal gas is desulfurized by HPF wet liquid phase catalytic method with ammonia as alkaline source. A large amount of sulfur foam and desulfurization waste liquid will be generated in the desulfurization process. The waste liquid generated in the desulfurization process contains a large amount of toxic and harmful substances, among which the main components are thiocyanate, thiosulfate, etc. Among them, thiocyanate has strong toxicity. If the desulfurization waste liquid is directly discharged without harmless treatment, it will seriously pollute the receiving water body and cause environmental pollution. Therefore, the desulfurization waste liquid needs to be treated. The desulfurization waste liquid contains a large amount of impurities. When treating the desulfurization waste liquid, the impurities in it need to be filtered.

[0004] Existing filtering measures generally use filter nets directly for filtering. However, the mesh of the filter net is easily clogged during filtering, which affects the filtering performance and service life. It needs to be replaced frequently, which affects the treatment efficiency of wastewater. At the same time, the impurities after filtration have a high water content and require subsequent treatment, which increases labor intensity. Some of the existing technologies also use a filter press to filter impurities, but the filter press method is fixed, resulting in uneven and loose filtration of the filter residue after filtration, resulting in a high water content of the filter residue, which cannot meet the filtration requirements and affects the filtration efficiency. Summary of the invention

[0005] In view of at least one shortcoming of the prior art, the present invention proposes an environmentally friendly purification and reuse device for desulfurization waste liquid to solve the problem of poor filtration effect of the existing filter press treatment device.

[0006] The environmentally friendly purification and reuse device for desulfurization waste liquid of the present invention adopts the following technical scheme: comprising a rotating drum, a filter plate frame, a filter press plate and a regulating device;

[0007] The drum can be rotated around a preset direction, and the desulfurization waste liquid is put into the drum;

[0008] The filter plate frame is fixedly arranged and located inside the drum, and filter holes and a filter residue collecting device are arranged on the filter plate frame, and the filter residue collecting device is used to collect the filter residue into the filter plate frame;

[0009] The filter press plate is arranged in the filter plate frame so as to be movable up and down. A retractable mesh is arranged on the top of the filter press plate and the filter plate frame. The retractable mesh is used to prevent waste residue from entering the top of the filter press plate when the filter press plate moves down.

[0010] The adjusting device is transmission-connected to the filter press plate, and is used to drive the filter press plate to move up and down to filter the filter residue. As the volume of the filter residue increases, the stroke of the filter press plate gradually decreases and the downward pressure gradually increases.

[0011] Furthermore, the adjusting device comprises a rack frame, a transmission shaft, a gear sleeve, a top ring, a compression spring and a plurality of telescopic teeth; the rack frame is connected to the filter press plate, and teeth are arranged on the inner side surfaces of the two vertical frames of the rack frame;

[0012] The gear sleeve is hollow inside, and the top ring is coaxially arranged inside the gear sleeve. When the rotational resistance of the gear sleeve is less than a preset value, the gear sleeve and the top ring rotate synchronously in a first direction. When the rotational resistance of the gear sleeve is greater than a preset value, the top ring and the gear sleeve can rotate relative to each other at a preset angle and maintain the rotation. The compression spring extends in the circumferential direction, and one end of the compression spring is connected to the gear sleeve, and the other end contacts the top ring.

[0013] The outer peripheral wall of the top ring has a cam-shaped curved surface, a slide groove is arranged on the cam-shaped curved surface, a tension spring and a slider are arranged on the inner end of the telescopic tooth, the telescopic tooth is slidably inserted in the gear sleeve, and the slider is circumferentially slidably connected with the slide groove, the tension spring makes the inner end of the telescopic tooth contact with the cam-shaped curved surface, the telescopic tooth is arranged within a local preset range of the circumference of the gear sleeve, and the telescopic tooth at the end of the first direction is close to the low point area of ​​the cam-shaped curved surface;

[0014] The transmission shaft extends horizontally and is rotatably arranged, the gear sleeve and the top ring are sleeved on the transmission shaft and the top ring is fixedly connected to the transmission shaft, the gear sleeve and the top ring are located inside the rack frame, and the telescopic teeth and the two vertical frames of the rack frame are alternately meshed.

[0015] Furthermore, an inner ratchet ring is coaxially arranged at one end of the gear sleeve, an outer ratchet ring is arranged at the corresponding end of the top ring, the outer ratchet ring is coaxially arranged inside the inner ratchet ring, and the two are connected by a ratchet with resistance.

[0016] Furthermore, in order to realize the preset angle of relative rotation between the top ring and the gear sleeve, a limit ring is coaxially arranged at one end of the gear sleeve away from the inner ratchet ring, and two stop surfaces are arranged on the limit ring along the circumferential direction. A top block is arranged at the corresponding end of the top ring, and one end of the compression spring is connected to one of the stop surfaces, and the other end contacts the top block and makes the top block contact with the other stop surface.

[0017] Furthermore, a gear ring is arranged at the upper end of the rotating drum, a transmission gear is arranged at one end of the transmission shaft, the transmission gear is meshed with the gear ring, and when the rotating drum rotates in a preset direction, the transmission shaft is driven to rotate in a first direction.

[0018] Furthermore, it also includes a support cylinder seat, which is fixedly arranged and located at the inner center of the rotating cylinder. Two filter plate frames are evenly distributed along the circumferential direction. The interior of the support cylinder seat is hollow. The inner end of the filter plate frame is connected to and penetrates the support cylinder seat. The rack frame is slidable up and down on the support cylinder seat, and the filter press plate is located inside the support cylinder seat and the filter plate frame.

[0019] Furthermore, the filter residue collecting device comprises a plurality of roller groups, which are arranged on the front side of the filter plate frame relative to the rotation direction of the drum and are evenly arranged along the height direction of the filter plate frame;

[0020] Each roller group comprises an upper roller and a lower roller, and the upper roller and the lower roller are driven by a transmission mechanism to rotate inwardly in opposite directions so as to roll the waste residue attached thereto into the interior of the filter plate frame.

[0021] Furthermore, a driving motor is provided at the lower end of the rotating drum, and a vertically extending worm is connected to the output end of the driving motor, and the rotating drum and the worm are coaxially fixedly connected;

[0022] The transmission mechanism includes a worm wheel, which is meshed with a worm, and a first transmission wheel is arranged on the wheel shaft of the worm wheel.

[0023] The support cylinder seat is provided with a second transmission wheel and a first reversing wheel, the first transmission wheel and the second transmission wheel are connected by a third transmission belt; the second transmission wheel and the first reversing wheel are connected by a fourth transmission belt;

[0024] The second transmission wheel is connected to the lowermost upper roller through the fifth transmission belt, and all the upper rollers are connected through the second transmission chain;

[0025] A second reversing wheel is arranged on the lower roller at the lowest end, the first reversing wheel is transmission connected with the second reversing wheel, and all the lower rollers are transmission connected through a first transmission chain.

[0026] Furthermore, a support rod for supporting the upper drum and the lower drum is arranged on the filter plate frame, a mounting hole is arranged on the support drum seat, and the outer ends of the upper drum and the lower drum are rotatably connected to the filter plate frame, and the inner ends are rotatably connected to the mounting hole.

[0027] Furthermore, support frames are arranged on both sides of the driving motor housing to support both ends of the transmission shaft; and supports are arranged on both sides of the upper end of the support cylinder seat to support the middle part of the transmission shaft.

[0028] The beneficial effects of the present invention are as follows: a desulfurization waste liquid environmentally friendly purification and recycling device of the present invention is provided with a filter plate frame in a rotating drum, and a filter residue collection device is provided on the filter plate frame, and the filter residue with a qualified volume is filtered in the filter plate frame through the up and down reciprocating motion of the filter press plate. At the same time, the filter press plate is controlled by the adjusting device, so that the filter press plate adaptively changes the downward pressure and downward pressure according to the volume and compactness of the filter residue. When the volume of the filter residue increases, the stroke of the filter press plate adaptively decreases and the downward pressure increases, so that the filter residue is accurately filtered according to the volume of the filter residue, and at the same time, the compactness and uniformity of the filter residue filter pressing are ensured, and the filter pressing efficiency and filter pressing effect are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the overall structure of a desulfurization waste liquid environmentally friendly purification and reuse device of the present invention;

[0031] Figure 2 This is a cross-sectional view of a desulfurization waste liquid environmentally friendly purification and reuse device of the present invention (the rear part is removed, and viewed from the back to the front);

[0032] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 It is an exploded view of the gear sleeve, top ring, telescopic teeth and compression spring in the present invention;

[0034] Figure 5 It is an assembly diagram of the gear sleeve, top ring, telescopic teeth and compression spring in the present invention;

[0035] Figure 6 It is a schematic diagram of the connection between the rack frame and the filter press plate in the present invention;

[0036] Figure 7 It is a structural schematic diagram of the filter residue collection device in the present invention;

[0037] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0038] Fig. 9 It is a schematic diagram of the structure of the support cylinder seat in the present invention;

[0039] Fig.10It is a schematic diagram of the structure of the filter plate frame in the present invention;

[0040] Fig.11 It is a structural schematic diagram of another embodiment of the transmission mechanism of the filter residue collection device in the present invention;

[0041] Fig.12 for Fig.11 Enlarged view of point C in the middle.

[0042] In the figure: 110, driving motor; 120, supporting frame; 130, rotating drum; 131, gear ring; 140, worm; 210, transmission shaft; 211, transmission gear; 220, top ring; 221, slide groove; 222, top block; 223, outer ratchet ring; 230, compression spring; 240, gear sleeve; 241, inner ratchet ring; 242, limit ring; 250, telescopic teeth; 251, tension spring; 252, slider; 260, rack frame; 270, filter press plate; 310, filter plate frame; 311, filter plate frame; 312, filter plate frame; 313, filter plate frame; 314, filter plate frame; 315, filter plate frame; 316, filter plate frame; 317, filter plate frame; 318, filter plate frame; 319, filter plate frame; 320, filter plate frame; 321, filter plate frame; 322, filter plate frame; 323, filter plate frame; 324, filter plate frame; 325, filter plate frame; 326, filter plate frame; 327, filter plate frame; 328, filter plate frame; 329, filter plate frame; 330, filter plate frame; 331, filter plate frame; 332, filter plate frame; 333, filter plate frame; 334, filter plate frame; 335, filter plate frame; 336, filter plate frame; 337, filter plate frame; 338, filter plate frame; 339, filter plate frame; 340, filter plate frame; 341, filter plate frame; 342, filter plate frame; 343, filter plate frame; 344, filter plate frame; 345, filter plate frame; 346, filter plate frame; 347, filter plate 1. Filter hole; 312. Support rod; 320. Support cylinder seat; 321. Mounting hole; 330. Lower roller; 331. First transmission chain; 332. Second reversing wheel; 340. Upper roller; 341. Second transmission chain; 350. Second transmission wheel; 360. First transmission wheel; 361. Third transmission belt; 362. Fourth transmission belt; 363. Fifth transmission belt; 364. First reversing wheel; 370. Worm wheel; 381. Driving sprocket; 382. Tensioning wheel; 383. Transmission chain. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in 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 making creative work are within the scope of protection of the present invention.

[0044] like Figures 1 to 10 As shown, a desulfurization waste liquid environmentally friendly purification and reuse device of the present invention comprises a drum 130, a filter plate frame 310, a filter press plate 270 and an adjustment device. The drum 130 is rotatable around a preset direction, and the desulfurization waste liquid is put into the drum 130.

[0045] The filter plate frame 310 is fixedly arranged and located inside the drum 130. The filter plate frame 310 can accommodate filter residues. The filter plate frame 310 is provided with filter holes 311 and a filter residue collection device, which is used to collect the filter residues into the filter plate frame 310. The filter press plate 270 is arranged in the filter plate frame 310 so as to be movable up and down. The tops of the filter press plate 270 and the filter plate frame 310 are provided with a telescopic mesh (not shown in the figure), which is used to prevent waste residues from entering the top of the filter press plate 270 when the filter press plate 270 moves downward.

[0046] The adjusting device is connected to the filter press plate 270 in a transmission manner. The adjusting device is used to drive the filter press plate 270 to move up and down to filter the filter residue, and change the movement stroke and downward pressure of the filter press plate 270 according to the volume of the filter residue at the bottom. As the volume of the filter residue increases, the movement stroke of the filter press plate 270 gradually decreases and the downward pressure gradually increases.

[0047] When in use, the desulfurization waste liquid is put into the drum 130, and the drum 130 is started to stir. During the stirring of the drum 130, the filter residue collection device collects the filter residue into the filter plate frame 310 during the stirring of the drum 130. In order to improve the collection effect and collection efficiency of the waste residue, a flocculant can be added to the drum 130 at the same time. The rotation of the drum 130 makes the desulfurization waste liquid and the flocculant fully mixed, and the desulfurization waste liquid and the flocculant undergo a flocculation reaction, and the tiny particles in the desulfurization waste liquid flocculate into a mass to form a large floc. After the floc enters the filter plate frame 310, if the volume is unqualified, it is discharged from the filter hole 311 together with the wastewater to continue flocculation; if the volume is qualified, it stays in the filter plate frame 310 and is pressed by the movement of the filter press plate 270. The water content of the filter residue is effectively reduced by the filter pressure, which can avoid the subsequent process of re-processing the filter residue and reduce the burden of post-processing. As the filtration proceeds, the volume of the filter residue at the bottom of the filter plate frame 310 will gradually increase. By setting the adjusting device, when the volume of the filter residue increases, the stroke of the filter press plate 270 will adaptively decrease and the downward pressure will increase, so that the filter residue can be accurately filtered according to the volume of the filter residue, while ensuring the compactness and uniformity of the filter residue filtration, thereby improving the filtration efficiency and effect.

[0048] In a further embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the adjusting device includes a rack frame 260 , a transmission shaft 210 , a gear sleeve 240 , a top ring 220 , a compression spring 230 and a plurality of telescopic teeth 250 .

[0049] The rack frame 260 is connected to the filter press plate 270 , and teeth are arranged on the inner side surfaces of the two vertical frames of the rack frame 260 .

[0050] The interior of the gear sleeve 240 is hollow, and the top ring 220 is coaxially arranged inside the gear sleeve 240. When the rotational resistance of the gear sleeve 240 is less than a preset value, the gear sleeve 240 and the top ring 220 rotate synchronously around the first direction. When the rotational resistance of the gear sleeve 240 is greater than a preset value, the top ring 220 and the gear sleeve 240 can rotate relative to each other at a preset angle and maintain (will not reset). The compression spring 230 extends in the circumferential direction, one end of the compression spring 230 is connected to the gear sleeve 240, and the other end is in contact with the top ring 220. When the top ring 220 and the gear sleeve 240 rotate relative to each other, the compression spring 230 stores energy.

[0051] The outer peripheral wall of the top ring 220 has a cam-shaped curved surface, and a slide groove 221 is arranged on the cam-shaped curved surface. A tension spring 251 and a slider 252 are arranged at the inner end of the telescopic tooth 250. The telescopic tooth 250 is radially slidably inserted into the gear sleeve 240, and the slider 252 is circumferentially slidably connected with the slide groove 221. The tension spring 251 makes the inner end of the telescopic tooth 250 contact with the cam-shaped curved surface. The telescopic tooth 250 is arranged within a local preset range of the circumference of the gear sleeve 240, and the telescopic tooth 250 at the end of the first direction is close to the low point area of ​​the cam-shaped curved surface.

[0052] The transmission shaft 210 extends horizontally and is rotatably arranged. The gear sleeve 240 and the top ring 220 are sleeved on the transmission shaft 210 and the top ring 220 is fixedly connected to the transmission shaft 210. The gear sleeve 240 and the top ring 220 are located inside the rack frame 260 so that the telescopic teeth 250 and the two vertical frames of the rack frame 260 are alternately meshed.

[0053] Furthermore, an inner ratchet ring 241 is coaxially arranged at one end of the gear sleeve 240, and an outer ratchet ring 223 is arranged at the corresponding end of the top ring 220. The outer ratchet ring 223 is coaxially arranged inside the inner ratchet ring 241, and the two are connected by a ratchet with resistance to allow the top ring 220 and the gear sleeve 240 to rotate relative to each other when the rotational resistance of the gear sleeve 240 around the first direction is greater than a preset value.

[0054] Furthermore, in order to realize the preset relative rotation angle of the top ring 220 and the gear sleeve 240, a limit ring 242 is coaxially arranged at one end of the gear sleeve 240 away from the inner ratchet ring 241, and two stop surfaces are arranged on the limit ring 242 along the circumferential direction. A top block 222 is arranged at the corresponding end of the top ring 220, and one end of the compression spring 230 is connected to one of the stop surfaces and the other end abuts against the top block 222, so that the top block 222 abuts against the other stop surface.

[0055] In a further embodiment, Figure 1 As shown, a gear ring 131 is disposed at the upper end of the rotating drum 130, and a transmission gear 211 is disposed at one end of the transmission shaft 210. The transmission gear 211 meshes with the gear ring 131. When the rotating drum 130 rotates in a preset direction, the transmission shaft 210 is driven to rotate in a first direction.

[0056] A driving motor 110 is disposed at the lower end of the rotating drum 130 , and the rotating drum 130 rotates under the drive of the driving motor 110 . Support frames 120 are disposed on both sides of the housing of the driving motor 110 , and the support frames 120 support both ends of the transmission shaft 210 .

[0057] To facilitate the reasonable arrangement of the structure, the present invention also includes a support cylinder seat 320, which is fixedly arranged and located at the inner center of the rotating cylinder 130. For example, the support cylinder seat 320 can be fixedly connected to the outer shell of the driving motor 110 through a connecting frame to achieve the fixation of the support cylinder seat 320. Supports are arranged on both sides of the upper end of the support cylinder seat 320, and the supports are used to support the middle part of the transmission shaft 210.

[0058] Two filter plate frames 310 are evenly distributed along the circumferential direction. The support cylinder seat 320 is hollow inside. The inner end of the filter plate frame 310 is connected to the support cylinder seat 320. The inner end of the filter plate frame 310 is open to pass through the support cylinder seat 320. The rack frame 260 is slidable up and down on the support cylinder seat 320. The middle part of the filter press plate 270 is located inside the support cylinder seat 320 and extends to the filter plate frame 310 on both sides.

[0059] In a further embodiment, Figure 7 As shown, the front side of the filter plate frame 310 relative to the rotation direction of the drum 130 is open, the filter holes 311 are arranged on the circumferential side of the filter plate frame 310, and the filter residue collection device includes a plurality of roller groups, which are arranged on the front side of the filter plate frame 310 relative to the rotation direction of the drum 130 and are evenly arranged along the height direction of the filter plate frame 310.

[0060] Each roller group includes an upper roller 340 and a lower roller 330 . The upper roller 340 and the lower roller 330 are driven by the transmission mechanism to rotate inward in opposite directions to roll the waste residue attached thereto into the interior of the filter plate frame 310 .

[0061] like Fig.10 As shown, a plurality of support rods 312 are provided on the filter plate frame 310 for supporting the upper drum 340 and the lower drum 330. A mounting hole 321 is provided on the support drum seat 320. The outer ends of the upper drum 340 and the lower drum 330 are rotatably connected to the filter plate frame 310, and the inner ends are rotatably connected to the mounting hole 321.

[0062] In a further embodiment, Figure 2 , Figure 7 and Figure 8 As shown, the output end of the driving motor 110 is connected to a vertically extending worm 140 , and the rotating drum 130 is coaxially fixedly connected with the worm 140 , so that the rotating drum 130 and the worm 140 are driven to rotate synchronously by the rotation of the driving motor 110 .

[0063] The transmission mechanism includes a worm wheel 370 , which is meshed with the worm 140 , and a first transmission wheel 360 is disposed on the wheel shaft of the worm wheel 370 .

[0064] The support cylinder seat 320 is provided with a second transmission wheel 350 and a first reversing wheel 364 . The first transmission wheel 360 and the second transmission wheel 350 are connected by a third transmission belt 361 . The second transmission wheel 350 and the first reversing wheel 364 are connected by a fourth transmission belt 362 .

[0065] The second transmission wheel 350 is transmission-connected to the lowermost upper roller 340 via the fifth transmission belt 363 , and all the upper rollers 340 are transmission-connected via the second transmission chain 341 .

[0066] The lower roller 330 at the bottom is provided with a second reversing wheel 332, the first reversing wheel 364 is transmission-connected with the second reversing wheel 332, and all the lower rollers 330 are transmission-connected via a first transmission chain 331. By properly setting the direction of the helical line of the worm 140, the upper roller 340 and the lower roller 330 can be driven to rotate inward in the opposite direction through the rotation of the worm 140.

[0067] like Fig.11 and Fig.12 As shown, as another feasible embodiment, the transmission mechanism includes a worm wheel 370 , a driving sprocket 381 , a tensioning wheel 382 and a transmission chain 383 . The worm wheel 370 is meshed with the worm 140 , and a first transmission wheel 360 is arranged on the wheel shaft of the worm wheel 370 .

[0068] The support cylinder seat 320 is provided with a second transmission wheel 350, and the first transmission wheel 360 and the second transmission wheel 350 are connected in transmission through a third transmission belt 361;

[0069] The driving sprocket 381 and the tensioning wheel 382 are arranged on the support cylinder seat 320. A connecting wheel is arranged at one end of the driving sprocket 381. The connecting wheel is connected to the second transmission wheel 350 through the fifth transmission belt 363, so that the driving sprocket 381 and the second transmission wheel 350 are connected through the fifth transmission belt 363.

[0070] Two tension wheels 382 are provided, and the two tension wheels 382 are arranged up and down, and the transmission chain 383 is wound around the driving sprocket 381 and the outer sides of the two tension wheels 382, ​​and is wound alternately inside and outside in an S shape on the upper roller 340 and the lower roller 330. The direction of the helical line of the worm 140 is reasonably set to achieve the upper roller 340 and the lower roller 330 to rotate inward in the opposite direction through the rotation of the worm 140.

[0071] The arrows in the figure indicate the rotation direction of the corresponding parts. Figure 1As shown, the drum 130 rotates counterclockwise (corresponding to the above-mentioned preset direction), so that the desulfurization waste liquid flows toward the filter residue collection device, thereby allowing the waste residue to adhere to the upper drum 340 and the lower drum 330. The counterclockwise rotation of the drum 130 drives the transmission gear 211 to rotate clockwise, thereby driving the top ring 220, the gear sleeve 240 and the telescopic tooth 250 to rotate synchronously clockwise (corresponding to the above-mentioned first direction), and the telescopic tooth 250 meshes with the right side teeth of the rack frame 260 and drives the rack frame 260 to move downward, thereby driving the filter press plate 270 to filter the filter residue downward. Figure 2 Cutting angle reason, Figure 2 and Figure 4 The direction and Figure 1 Instead, for ease of understanding, Figure 2 The description is based on the direction in .

[0072] When the filter press plate 270 moves to the point where it cannot move downward due to the obstruction of the filter residue, the telescopic tooth 250 is stuck with the rack frame 260. At this time, the gear sleeve 240 cannot rotate due to the obstruction of the telescopic tooth 250, and the top ring 220 continues to rotate clockwise with the transmission shaft 210. At this time, the top ring 220 and the gear sleeve 240 rotate relative to each other (slip), the compression spring 230 is compressed to store energy, and the top ring 220 rotates clockwise so that the telescopic tooth 250 at the end contacts the low point of the cam-shaped curved surface of the top ring 220. The telescopic tooth 250 moves toward the center of the circle (retracts) under the action of the tension spring 251. As the top ring 220 rotates, the telescopic teeth 250 retract one by one from the end until the telescopic tooth 250 stuck with the rack frame 260 retracts, and the telescopic tooth 250 is no longer meshed with the rack frame 260. The top ring 220, the gear sleeve 240 and the telescopic tooth 250 rotate synchronously to the other side of the rack frame 260 ( Figure 2The rack frame 260 moves upward to drive the filter plate 270 to move back to its original position, and then the top ring 220, the gear sleeve 240 and the telescopic teeth 250 rotate again to engage with the left side of the rack frame 260 to start the next stroke. A complete filter pressing cycle ends when all the telescopic teeth 250 are fully retracted. After a complete filter pressing cycle, the filter residue (filter brick) can be removed, and the equipment can be manually restored to work for the next filter pressing cycle. In order to facilitate manual disassembly of the equipment, the side plate of the rack frame 260 with the filter hole 311 is set to an openable structure to facilitate the removal of the filter brick, and the top block 222 is set to a removable movable structure. After a complete filter pressing cycle is completed, the top block 222 can be pulled out to allow the top ring 220 to continue to rotate. When the top ring 220 rotates to the high point of its cam-shaped curved surface and contacts the telescopic teeth 250, all the telescopic teeth 250 are ejected in sequence until the top ring 220 rotates to the initial position and the top block 222 is reinserted, and the equipment can start the next filter pressing cycle. Through the above, the filter plate 270 can adaptively adjust the downward pressure according to the amount of filter residue, and perform precise filter pressing on the filter residue. At the same time, due to the ratchet meshing of the top ring 220 and the tooth sleeve 240, the top ring 220 and the tooth sleeve 240 will no longer reset after relative rotation, and the compression amount of the compression spring 230 in each stroke is gradually increasing, so that the downward pressure of the filter plate 270 is gradually increased, and the filter residue is filtered more evenly and compactly.

[0073] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization waste liquid environmental protection purification and recycling device, Features: It includes a rotating drum, a filter plate frame, a filter press plate and an adjusting device; The drum can be rotated around a preset direction, and the desulfurization waste liquid is put into the drum; The filter plate frame is fixedly arranged and located inside the drum, and filter holes and a filter residue collecting device are arranged on the filter plate frame, and the filter residue collecting device is used to collect the filter residue into the filter plate frame; The filter press plate is arranged in the filter plate frame so as to be movable up and down. A retractable mesh is arranged on the top of the filter press plate and the filter plate frame. The retractable mesh is used to prevent waste residue from entering the top of the filter press plate when the filter press plate moves down. The adjusting device is connected to the filter press plate in a transmission manner. The adjusting device is used to drive the filter press plate to move up and down to filter the filter residue. As the volume of the filter residue increases, the stroke of the filter press plate gradually decreases and the downward pressure gradually increases. The adjusting device comprises a rack frame, a transmission shaft, a gear sleeve, a top ring, a compression spring and a plurality of telescopic teeth; the rack frame is connected to the filter press plate, and teeth are arranged on the inner side surfaces of the two vertical frames of the rack frame; The gear sleeve is hollow inside, and the top ring is coaxially arranged inside the gear sleeve. When the rotational resistance of the gear sleeve is less than a preset value, the gear sleeve and the top ring rotate synchronously in a first direction. When the rotational resistance of the gear sleeve is greater than a preset value, the top ring and the gear sleeve can rotate relative to each other at a preset angle and maintain the rotation. The compression spring extends in the circumferential direction, and one end of the compression spring is connected to the gear sleeve, and the other end contacts the top ring. The outer peripheral wall of the top ring has a cam-shaped curved surface, a slide groove is arranged on the cam-shaped curved surface, a tension spring and a slider are arranged on the inner end of the telescopic tooth, the telescopic tooth is slidably inserted in the gear sleeve, and the slider is circumferentially slidably connected with the slide groove, the tension spring makes the inner end of the telescopic tooth contact with the cam-shaped curved surface, the telescopic tooth is arranged within a local preset range of the circumference of the gear sleeve, and the telescopic tooth at the end of the first direction is close to the low point area of ​​the cam-shaped curved surface; The transmission shaft extends horizontally and is rotatably arranged, the gear sleeve and the top ring are sleeved on the transmission shaft and the top ring is fixedly connected to the transmission shaft, the gear sleeve and the top ring are located inside the rack frame, and the telescopic teeth and the two vertical frames of the rack frame are alternately meshed; An inner ratchet ring is coaxially arranged at one end of the gear sleeve, and an outer ratchet ring is arranged at the corresponding end of the top ring. The outer ratchet ring is coaxially arranged inside the inner ratchet ring, and the two are connected by a ratchet with resistance; In order to realize the preset angle of relative rotation between the top ring and the gear sleeve, a limit ring is coaxially arranged at one end of the gear sleeve away from the inner ratchet ring, two stop surfaces are arranged on the limit ring along the circumferential direction, and a top block is arranged at the corresponding end of the top ring, one end of the compression spring is connected to one of the stop surfaces, and the other end abuts against the top block and makes the top block abut against the other stop surface; A gear ring is arranged at the upper end of the rotating drum, and a transmission gear is arranged at one end of the transmission shaft. The transmission gear is meshed with the gear ring. When the rotating drum rotates in a preset direction, the transmission shaft is driven to rotate in a first direction.

2. A desulfurization waste liquid environmentally friendly purification and recycling device according to claim 1, Features: It also includes a support cylinder seat, which is fixed and located at the inner center of the rotating cylinder. Two filter plate frames are evenly distributed along the circumferential direction. The interior of the support cylinder seat is hollow. The inner end of the filter plate frame is connected to and penetrates the support cylinder seat. The rack frame is slidable up and down on the support cylinder seat, and the filter press plate is located inside the support cylinder seat and the filter plate frame.

3. A desulfurization waste liquid environmentally friendly purification and recycling device according to claim 2, Features: The filter residue collecting device comprises a plurality of roller groups, which are arranged on the front side of the filter plate frame relative to the rotating direction of the drum and are evenly arranged along the height direction of the filter plate frame; Each roller group comprises an upper roller and a lower roller, and the upper roller and the lower roller are driven by a transmission mechanism to rotate inwardly in opposite directions so as to roll the waste residue attached thereto into the interior of the filter plate frame.

4. The environmentally friendly purification and recycling device for desulfurization waste liquid according to claim 2, Features: A driving motor is arranged at the lower end of the rotating drum, and a vertically extending worm is connected to the output end of the driving motor, and the rotating drum and the worm are coaxially fixedly connected; The transmission mechanism includes a worm wheel, which is meshed with a worm, and a first transmission wheel is arranged on the wheel shaft of the worm wheel. The support cylinder seat is provided with a second transmission wheel and a first reversing wheel, the first transmission wheel and the second transmission wheel are connected by a third transmission belt; the second transmission wheel and the first reversing wheel are connected by a fourth transmission belt; The second transmission wheel is connected to the lowermost upper roller through the fifth transmission belt, and all the upper rollers are connected through the second transmission chain; A second reversing wheel is arranged on the lower roller at the lowest end, the first reversing wheel is transmission connected with the second reversing wheel, and all the lower rollers are transmission connected through a first transmission chain.

5. The environmentally friendly purification and recycling device for desulfurization waste liquid according to claim 2, Features: The filter plate frame is provided with a support rod for supporting the upper drum and the lower drum, and the support drum seat is provided with a mounting hole. The outer ends of the upper drum and the lower drum are rotatably connected to the filter plate frame, and the inner ends are rotatably connected to the mounting hole.

6. The environmentally friendly purification and recycling device for desulfurization waste liquid according to claim 2, Features: Support frames are arranged on both sides of the driving motor housing to support both ends of the transmission shaft; supports are arranged on both sides of the upper end of the support cylinder seat to support the middle part of the transmission shaft.

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