Multi-waste concentrated acid zero discharge water recovery device

Abstract

The invention discloses a multi-waste concentrated acid zero-discharge water recovery device, and relates to the technical field of water recovery technologies. The screw rod is rotationally connected to the tank body through a fixing plate; the material scattering mechanism comprises a transverse plate in threaded connection with the screw rod, and the two ends of the transverse plate are in sliding fit with the two stroke grooves in a one-to-one correspondence mode; a stirring mechanism; a feeding mechanism; a launching mechanism; a screw rod rotates to drive a transverse plate to move downwards, in the moving process, the transverse plate rotates around the axis of the screw rod, meanwhile, a material receiving box on the transverse plate does reciprocating linear motion, and in the reciprocating motion process of the material box, on one hand, stirring blades are driven to stir mixed liquid of a flocculating agent and water in the material receiving box firstly, and on the other hand, the stirring blades are driven to stir the mixed liquid of the flocculating agent and the water in the material receiving box; the flocculant is not easy to cake, and the fusion effect of the flocculant and the flocculant is improved; and on the other hand, the blocking door is intermittently opened and closed, so that a small amount of flocculating agent can be put into each position in the tank body for multiple times, the zero-discharge water in the tank body is fully fused with the flocculating agent, and the flocculation effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of water recovery, and in particular to a multi-waste concentrated acid zero-discharge water recovery device. Background Art

[0002] Zero discharge water means that in the industrial production process, through a series of treatment measures, all wastewater, waste gas and solid waste generated in the production process are recycled and reused, and no pollutants and waste are discharged into the external environment, thus achieving infinite reduction of pollutants and energy emissions to zero.

[0003] Zero discharge water is mainly used in the industrial field, especially in water treatment technology, and usually refers to zero liquid discharge. This method reuses industrial water, highly concentrates the salt content and pollutants into wastewater, and then recycles it all, or uses a filter press to filter out water-insoluble substances and then recycles them to ensure that no waste liquid is discharged from the factory. The salts and pollutants in the water are discharged in solid form through concentrated crystallization or filter-filtered waste residues and sent to a waste treatment plant for landfill, or recycled as useful chemical raw materials.

[0004] For example, the publication number is: CN115611394A, and the name is: "A desulfurization waste liquid floc separation device", each impeller is rotatably arranged in a generating barrel, each mounting frame is respectively installed in a generating barrel, and the two mounting frames are respectively located on both sides of the connection between the two generating barrels; the second filter screen is an annular mesh structure, and the second filter screen is installed on the connecting track and the mounting frame in the shape of a Möbius ring, and can slide along the connecting track and the track on the mounting frame; the conveying device includes two augers; each augers is rotatably inserted into the first mounting ring, the second mounting ring and the third mounting ring of a mounting frame, and the blade edge of the augers is in contact with the inner wall of the second filter screen; the adjustment mechanism is used to drive the second filter screen to slide along the connecting track.

[0005] In the prior art such as that including the above-mentioned patent, in the process of treating acidic zero-discharge water, in the pretreatment stage, it is first necessary to add alkaline substances to the zero-discharge water to neutralize it with the acidic zero-discharge water, and then add flocculants to the zero-discharge water to flocculate the impurities in the zero-discharge water. The flocculated impurities are then manually removed using a filter, and then the zero-discharge water is treated in the next step.

[0006] The shortcomings of the prior art are that since the flocculant is usually in powder form, after the flocculant is added to the zero-discharge water, the flocculant tends to float on the water surface rather than sink and merge with the water. Even if the flocculant and the zero-discharge water are stirred and mixed, it is difficult to mix the zero-discharge water evenly, thus affecting the flocculation effect. Summary of the invention

[0007] The purpose of the present invention is to provide a multi-waste concentrated acid zero-discharge water recovery device to solve the deficiencies in the above-mentioned prior art.

[0008] In order to achieve the above object, the present invention provides the following technical solution: a multi-waste concentrated acid zero-discharge water recovery device, comprising:

[0009] The tank body has a drain hole at its bottom and two travel grooves are symmetrically formed on the inner wall of the tank body;

[0010] A screw rod is rotatably connected to the tank body through a fixing plate;

[0011] The material spreading mechanism comprises a transverse plate screwed to the screw rod, the two ends of the transverse plate are respectively slidably matched with the two stroke grooves in a one-to-one correspondence, two material spreading components are symmetrically arranged on the transverse plate, each material spreading component comprises a material receiving box reciprocatingly slidably connected to the transverse plate, a plurality of material spreading holes are opened on the material receiving box, a blocking door is slidably connected in each material spreading hole, the material receiving box is slidably connected to the transverse plate, and a box cover is hinged on the top of the material receiving box;

[0012] A stirring mechanism is arranged in the material receiving box, and the stirring mechanism comprises a rotating shaft rotatably connected in the material receiving box, and a plurality of stirring blades are arranged on the rotating shaft;

[0013] The feeding mechanism comprises two feeding assemblies, each of which comprises a powder box slidably connected to a fixed plate, and a through hole is provided at the bottom of the powder box;

[0014] The water discharge mechanism comprises a plug which is vertically slidably connected in the tank body, and the plug cooperates with the water discharge hole for sealing;

[0015] During the rotation of the screw, there are water-injection stroke and powder-collecting stroke.

[0016] In the launching stroke: the horizontal plate is driven to rotate around the axis of the screw rod and simultaneously moves upward along the axis of the screw rod; at the same time, the rotating shaft is driven to move vertically upward, and the rotating shaft abuts against the box cover, so that the box cover is in an open state;

[0017] In the powder receiving stroke: the horizontal plate only moves vertically upward along the axis of the screw. During the upward movement, the plug is driven to passively separate from the drain hole so that zero-discharge water can flow out of the drain hole; at the same time, the powder box is driven to move upward to the receiving box so that the flocculant in the powder box can fall into the receiving box from the through hole.

[0018] Furthermore, the material spreading assembly also includes a reciprocating screw rotatably connected to the cross plate, the end of the reciprocating screw is slidably abutted against the travel groove, the first gear is fixedly connected to the reciprocating screw, a movable plate is slidably connected to the cross plate, the movable plate is threadedly connected to the reciprocating screw, and the material receiving box is fixedly connected to the movable plate.

[0019] Furthermore, the travel groove is composed of a vertical section and an arc section connected to each other.

[0020] Furthermore, a spring is provided between the blocking door and the material receiving box.

[0021] Furthermore, the stirring mechanism also includes an inclined plate fixedly connected to the horizontal plate, the inclined plate abuts and cooperates with the rotating shaft, the rotating shaft is fixedly connected with a second gear, the horizontal plate is fixedly connected with a first rack, the first rack meshes and cooperates with the second gear, and the rotating shaft is fixedly connected with an intermittent piece, which abuts and cooperates with each blocking door.

[0022] Furthermore, the intermittent member has a plurality of protrusions and reset recesses.

[0023] Furthermore, the feeding assembly also includes a slide plate, which is slidably connected to the bottom of the powder box and cooperates with the through hole seal. A rotating rod is rotatably connected to the powder box, a lever is fixedly connected to the rotating rod, the lever abuts against the slide plate, a pawl is elastically provided on the rotating rod, a ratchet is rotatably connected to the rotating rod, the pawl is snap-fitted with the ratchet, a third gear is fixedly connected to the ratchet, a second rack is fixedly connected to the fixed plate, and the second rack meshes with the third gear.

[0024] Furthermore, the water discharge mechanism also includes a rotating part rotatably connected to the tank body, the rotating part is provided with two arc grooves in a circumferential array, both sides of the plug are fixedly connected with abutment rods, the two abutment rods are slidably abutted with the two arc grooves respectively and one by one, both sides of the rotating part are hinged with a first connecting rod, the ends of the two first connecting rods that are away from each other are rotatably abutted with a second connecting rod, the second connecting rod is rotatably connected to the inner wall of the tank body, one end of the second connecting rod is rotatably connected to a third connecting rod, the third connecting rod is fixedly connected with a lifting block, the lifting block is vertically slidably connected to the inner wall of the tank body, and the lifting block abuts and cooperates with the top of the horizontal plate, the third connecting rod is hinged with a fourth connecting rod, and one end of the fourth connecting rod is rotatably connected to the powder box.

[0025] Furthermore, a torsion spring is arranged between the rotating member and the tank body.

[0026] Furthermore, a filter screen is detachably provided at the bottom of the horizontal plate.

[0027] In the above technical scheme, the present invention provides a multi-waste concentrated acid zero-discharge water recovery device:

[0028] 1. The screw rotates to drive the horizontal plate to move downward. During the movement, the horizontal plate rotates around the axis of the screw. At the same time, the material receiving box on the horizontal plate makes reciprocating linear motion. During the reciprocating motion of the material box, the stirring blades passively stir the mixed liquid of flocculant and water in the material box first, so that the flocculant is not easy to agglomerate, thereby increasing the fusion effect of the two; secondly, the blocking door is intermittently opened and closed, so that small amounts of flocculant are added to various positions in the tank body multiple times, so that the zero-discharge water in the tank body is fully integrated with the flocculant, thereby enhancing the flocculation effect.

[0029] 2. By detachably setting a filter on the horizontal plate, after the flocculant is added, the filter moves up synchronously with the horizontal plate, and as the filter moves up, the flocculated impurities can be collected. In this way, the time waiting for impurities to settle to the bottom of the tank is reduced, and at the same time, manual scooping by staff is avoided, which also improves the treatment efficiency of zero-discharge water. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the overall top-down perspective structure provided by an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of a tank cross-section structure provided by an embodiment of the present invention;

[0034] Figure 4 A schematic diagram of the internal structure of a tank provided by an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of the structure of a material spreading mechanism and a stirring mechanism provided in an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of the cross-sectional structure of a material receiving box provided in an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the intermittent structure provided by an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the structure of a screw rod, a fixing plate and a feeding mechanism provided in an embodiment of the present invention;

[0039] Fig. 9A schematic diagram of the structure of a feeding mechanism provided in an embodiment of the present invention;

[0040] Fig.10 A schematic diagram of the structure of a launching mechanism provided in an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 1. Tank body; 11. Vertical section; 12. Arc section; 2. Screw; 21. Fixed plate; 3. Spreading mechanism; 31. Horizontal plate; 32. Reciprocating screw; 33. Moving plate; 34. Receiving box; 341. Spreading hole; 35. Box cover; 36. First gear; 37. Blocking door; 38. Spring; 4. Stirring mechanism; 41. Inclined plate; 42. First rack; 43. Rotating shaft; 44. Second gear; 45. Intermittent piece; 451. Protrusion; 452 , reset recess; 46, stirring blade; 5, feeding mechanism; 51, powder box; 511, through hole; 52, slide plate; 53, rotating rod; 54, pawl; 55, ratchet; 56, third gear; 57, lever; 58, second rack; 6, water discharge mechanism; 61, rotating part; 611, arc groove; 62, abutment rod; 63, plug; 64, first connecting rod; 65, second connecting rod; 66, third connecting rod; 67, lifting block; 68, fourth connecting rod. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] See also Figure 1-10 A multi-waste concentrated acid zero-discharge water recovery device provided by an embodiment of the present invention includes: a tank body 1; a water discharge hole is opened at the bottom of the tank body 1; a screw 2 is rotatably connected to the tank body 1 through a fixing plate 21; two stroke grooves are symmetrically opened on the inner wall of the tank body 1; specifically, the stroke groove is composed of a vertical section 11 and an arc section 12 connected to each other.

[0045] It should be noted that a third rack (not shown in the figure) is fixedly connected at one side of the arc segment 12, and the third rack is meshed with the first gear 36. Through the meshing action of the third rack and the first gear 36, the first gear 36 can be driven to rotate, thereby driving the reciprocating screw rod 32 to rotate through the first gear 36, and further making the material receiving box 34 reciprocate on the cross plate 31.

[0046] In the embodiment of the present invention: the material spreading mechanism 3 includes a transverse plate 31 screwed to the screw rod 2, and the two ends of the transverse plate 31 are slidably matched with the two stroke grooves in a one-to-one correspondence. Two material spreading components are symmetrically arranged on the transverse plate 31, and each material spreading component includes a material receiving box 34 reciprocatingly slidably connected to the transverse plate 31, and a plurality of material spreading holes 341 are opened on the material receiving box 34, and a blocking door 37 is slidably connected in each of the material spreading holes 341; preferably, a spring 38 is arranged between the blocking door 37 and the material receiving box 34; the material receiving box 34 is slidably connected to the transverse plate 31, and a box cover 35 is hinged on the top of the material receiving box 34.

[0047] Specifically, the material spreading assembly also includes a reciprocating screw 32 rotatably connected to the cross plate 31, the end of the reciprocating screw 32 is slidably abutted against the travel groove, a first gear 36 is fixedly connected to the reciprocating screw 32, a moving plate 33 is slidably connected to the cross plate 31, the moving plate 33 is screwed to the reciprocating screw 32, and a material receiving box 34 is fixedly connected to the moving plate 33.

[0048] During use, when the screw 2 rotates, due to the screw connection between the cross plate 31 and the screw 2, and the sliding cooperation between the end of the reciprocating screw 32 and the stroke groove, in the vertical section 11, the cross plate 31 will be driven to move vertically downward, and in the arc section 12, the cross plate 31 will be driven to move downward while being driven to rotate around the axis of the screw 2. When the cross plate 31 rotates around the axis of the screw 2, since a third rack is provided on one side of the arc section 12, the third rack is engaged with the first gear 36, and the first gear 36 drives the reciprocating screw 32 to rotate. Under the screw connection between the reciprocating screw 32 and the movable plate 33, the movable plate 33 moves back and forth on the cross plate 31.

[0049] The stirring mechanism 4 is arranged in the material receiving box 34 . The stirring mechanism 4 comprises a rotating shaft 43 rotatably connected in the material receiving box 34 . A plurality of stirring blades 46 are arranged on the rotating shaft 43 .

[0050] Specifically, the stirring mechanism 4 also includes an inclined plate 41 fixedly connected to the horizontal plate 31, the inclined plate 41 is in abutment with the rotating shaft 43, a second gear 44 is fixedly connected to the rotating shaft 43, a first rack 42 is fixedly connected to the horizontal plate 31, the first rack 42 is meshing with the second gear 44, an intermittent piece 45 is fixedly connected to the rotating shaft 43, and the intermittent piece 45 is in abutment with each blocking door 37.

[0051] More specifically, the intermittent member 45 has a plurality of protrusions 451 and reset recesses 452. As the intermittent member 45 rotates, when the protrusion 451 abuts against the blocking door 37, the blocking door 37 slides on the material receiving box 34, so that the material spreading hole 341 is connected with the zero-discharge water in the tank body 1, so that the zero-discharge water can enter the material receiving box 34 from the material spreading hole 341, thereby allowing the zero-discharge water to mix with the flocculant in the material receiving box 34; when the reset recess 452 rotates to the position of the blocking door 37, under the elastic force of the spring 38, the blocking door 37 is reset and the material spreading hole 341 is re-blocked.

[0052] During use, when the movable plate 33 reciprocates on the horizontal plate 31, the second gear 44 on the rotating shaft 43 will mesh with the first rack 42, thereby driving the rotating shaft 43 to rotate. The rotation of the rotating shaft 43 will, on the one hand, drive the stirring blades 46 to mix and stir the zero-discharge water and the flocculant, thereby avoiding the flocculant being directly added to the tank body 1, which would cause the flocculant to agglomerate, or the flocculant floating on the water surface, which would cause the flocculant and the zero-discharge water to not be fully mixed; on the other hand, it will drive the intermittent member 45 to rotate. Through the cooperation of the intermittent member 45 and each sealing door 37, the sealing door 37 is intermittently opened and blocked, so that the liquid after the flocculant and the zero-discharge water are mixed can be intermittently and repeatedly added in small amounts into the zero-discharge water in the tank body 1.

[0053] It can be understood that the stirring mechanism 4 is arranged in the material receiving box 34, and the material receiving box 34 moves back and forth on the horizontal plate 31 on the one hand, and on the other hand, the horizontal plate 31 rotates around the axis of the screw 2 while moving vertically in the tank body 1, so that the material receiving box 34 can intermittently open the blocking door 37 to release the liquid mixed with the flocculant and the zero-discharge water to each position in the tank body 1, so that the flocculant and the zero-discharge water are mixed more fully and the flocculation effect is better.

[0054] The rotating shaft 43 has a cover opening station and a mixing and feeding station.

[0055] Opening station: The inclined plate 41 abuts against the rotating shaft 43, which can drive the rotating shaft 43 to move vertically upward in the receiving box 34. Figure 6 In the state shown, the end of the rotating shaft 43 has a horizontally arranged rod perpendicular to the axis of the rotating shaft 43. At this time in the figure, the rod and the box cover 35 are in abutment state, and at this time, the intermittent member 45 cannot cooperate with the blocking doors 37. When the rotating shaft 43 moves upward, the rod is driven to move upward synchronously, so that the rod abuts against the box cover 35. Under the action of the abutment between the two, the box cover 35 is driven to open, preparing for the subsequent work of receiving the flocculant.

[0056] Mixing and feeding station: after the inclined plate 41 is disengaged from the rotating shaft 43, due to the action of gravity, the rotating shaft 43 returns to the initial position, and the rotating shaft 43 drives the intermittent member 45 to reset synchronously. As the intermittent member 45 moves downward, the rotation of the intermittent member 45 can cooperate with the blocking doors 37, so that the blocking doors 37 can be opened and blocked intermittently, so as to feed the materials.

[0057] In the embodiment of the present invention: the feeding mechanism 5 includes two feeding components, each of which includes a powder box 51 slidably connected to the fixed plate 21, and a through hole 511 is opened at the bottom of the powder box 51; specifically, the feeding component also includes a slide plate 52, which is slidably connected to the bottom of the powder box 51 and is sealed with the through hole 511. A rotating rod 53 is rotatably connected to the powder box 51, and a lever 57 is fixedly connected to the rotating rod 53, and the lever 57 abuts against the slide plate 52. A pawl 54 is elastically provided on the rotating rod 53, and a ratchet 55 is rotatably connected to the rotating rod 53. The pawl 54 is engaged with the ratchet 55, and a third gear 56 is fixedly connected to the ratchet 55. A second rack 58 is fixedly connected to the fixed plate 21, and the second rack 58 meshes with the third gear 56.

[0058] When in use, the powder box 51 will move on the fixed plate 21, and the movement can make the powder box 51 be located above the receiving box 34. During its movement, the second rack 58 engages with the third gear 56, so that the third gear 56 drives the ratchet 55 to rotate, and the ratchet 55 drives the pawl 54, the rotating rod 53, and the lever 57 to rotate. The rotation of the lever 57 drives the slide plate 52 to slide on the bottom of the powder box 51, so that the through hole 511 leaks. Due to the lack of the blockage of the slide plate 52, the flocculant in the powder box 51 will fall from the through hole 511 and fall into the receiving box 34.

[0059] Preferably, a torsion spring is provided between the rotating rod 53 and the powder box 51; as the powder box 51 continues to move on the fixed plate 21, the second rack 58 will disengage from the third gear 56. After disengagement, the elastic force of the torsion spring drives the rotating rod 53, the lever 57 and the pawl 54 to rotate in the opposite direction and reset. The lever 57 flips and drives the slide plate 52 to slide in the opposite direction and reset at the bottom of the powder box 51, and re-blocks the through hole 511. The pawl 54 rotates in the opposite direction and drives the ratchet 55 to flip and reset. It can be understood that after the reset is completed, when the powder box 51 moves in the opposite direction on the fixed plate 21, at this time, even if the third gear 56 is meshed with the second rack 58, the unidirectional transmission of the pawl 54 and the ratchet 55 cannot drive the pawl 54 to rotate, thereby avoiding the slide plate 52 from sliding again, causing the through hole 511 to leak again, causing the flocculant to fall from the through hole 511, and causing waste of flocculant.

[0060] The water discharge mechanism 6 includes a plug 63 vertically slidably connected to the tank body 1, and the plug 63 cooperates with the water discharge hole to block the water discharge hole; specifically, the water discharge mechanism 6 also includes a rotating member 61 rotatably connected to the tank body 1; specifically, a torsion spring is arranged between the rotating member 61 and the tank body 1; two arc grooves 611 are arranged in a circumferential array on the rotating member 61, and both sides of the plug 63 are fixedly connected with abutment rods 62, and the two abutment rods 62 are respectively and one by one correspondingly slidably abutted with the two arc grooves 611, and both sides of the rotating member 61 are hinged with a first connecting rod Rod 64, the ends of the two first connecting rods 64 that are away from each other are rotatably abutted with the second connecting rod 65, the second connecting rod 65 is rotatably connected to the inner wall of the tank body 1, one end of the second connecting rod 65 is rotatably connected to the third connecting rod 66, the third connecting rod 66, the third connecting rod 66 is fixedly connected with a lifting block 67, the lifting block 67 is vertically slidably connected to the inner wall of the tank body 1, and the lifting block 67 is abutted against the top of the horizontal plate 31, the third connecting rod 66 is hinged with a fourth connecting rod 68, and one end of the fourth connecting rod 68 is rotatably connected to the powder box 51.

[0061] It is worth mentioning that the third connecting rod 66 is rotatably connected to the inner wall of the tank body 1, and, as Fig.10 As shown, the rotation axis of the third connecting rod 66 is located at the midpoint of the length direction of the third connecting rod 66.

[0062] When in use, when the horizontal plate 31 moves to the bottom of the tank body 1, that is, after the flocculant feeding is completed, the horizontal plate 31 moves upward. During its upward movement, it will abut against the lifting block 67 and drive the lifting block 67 to move upward synchronously. The upward movement of the lifting block 67 has two effects: the first: the powder box 51 is driven to move horizontally on the fixed plate 21 through the fourth connecting rod 68, so that the powder box 51 moves to the top of the receiving box 34; the second: the lifting block 67 moves upward to pull one end of the third connecting rod 66 to move upward synchronously, and the third connecting rod 68 is used to move the powder box 51 upward. The three-link 66 drives the third link 66 to rotate around its rotation axis. The other end of the third link 66 pulls the first link 64 to move by rotating. The movement of the first link 64 drives the rotating member 61 to rotate. The plug 63 is slidably connected in the tank body 1, and the abutment rod 62 cooperates with the arc groove 611 to drive the plug 63 to move vertically upward, so that the plug 63 is separated from the drain hole, so that the zero-discharge water with the flocculant added can flow out of the drain hole, so as to be processed in the next process.

[0063] In general, the drain mechanism 6 can not only pull out the plug 63 from the drain hole to allow zero-discharge water to flow out, but also passively drive the powder box 51 to move upwards of the material receiving box 34 to replenish flocculant into the material receiving box 34 .

[0064] Preferably, a filter screen is detachably provided at the bottom of the transverse plate 31, and the filter screen can move upward synchronously with the transverse plate 31 after the flocculant is added. As the filter screen moves upward, the flocculated impurities can be collected. In this way, the time waiting for impurities to settle to the bottom of the tank body 1 is reduced, and at the same time, manual scooping by staff is avoided, thereby improving the treatment efficiency of zero-discharge water.

[0065] The screw 2 has a water-injection stroke and a powder-collecting stroke during its rotation.

[0066] During the launching stroke: the horizontal plate 31 is driven to rotate around the axis of the screw 2 and simultaneously moves upward along the axis of the screw 2; at the same time, the rotating shaft 43 is driven to move vertically upward, and the rotating shaft 43 abuts against the box cover 35, so that the box cover 35 is in an open state.

[0067] In the powder receiving stroke: the horizontal plate 31 only moves vertically upward along the axis of the screw 2. During the upward movement, the plug 63 is driven to passively separate from the drain hole so that zero-discharge water flows out of the drain hole; at the same time, the powder box 51 is driven to move upward to the receiving box 34 so that the flocculant in the powder box 51 can fall into the receiving box 34 from the through hole 511.

[0068] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A zero-discharge water recovery device for waste concentrated acid, characterized in that: include: The tank body (1) has a drain hole at its bottom; and two travel grooves are symmetrically formed on the inner wall of the tank body (1); A screw rod (2) rotatably connected to the tank body (1) via a fixing plate (21); The material spreading mechanism (3) comprises a transverse plate (31) screwed to the screw rod (2), the two ends of the transverse plate (31) respectively correspondingly slidingly cooperate with the two stroke grooves, two material spreading components are symmetrically arranged on the transverse plate (31), each material spreading component comprises a material receiving box (34) reciprocatingly slidably connected to the transverse plate (31), a plurality of material spreading holes (341) are opened on the material receiving box (34), a blocking door (37) is slidably connected in each material spreading hole (341), the material receiving box (34) is slidably connected to the transverse plate (31), and a box cover (35) is hinged on the top of the material receiving box (34); A stirring mechanism (4) is arranged in the material receiving box (34), the stirring mechanism (4) comprises a rotating shaft (43) rotatably connected in the material receiving box (34), and a plurality of stirring blades (46) are arranged on the rotating shaft (43); A feeding mechanism (5), comprising two feeding assemblies, each of which comprises a powder box (51) slidably connected to a fixed plate (21), and a through hole (511) is provided at the bottom of the powder box (51); A water discharge mechanism (6), comprising a plug (63) vertically slidably connected in the tank body (1), the plug (63) cooperating with the water discharge hole for sealing; During the rotation of the screw (2), there are a water-injection stroke and a powder-collecting stroke. During the launching stroke: the horizontal plate (31) is driven to rotate around the axis of the screw rod (2) and simultaneously moves upward along the axis of the screw rod (2); at the same time, the rotating shaft (43) is driven to move vertically upward, and the rotating shaft (43) abuts against the box cover (35), so that the box cover (35) is in an open state; During the powder receiving stroke: the horizontal plate (31) only moves vertically upward along the axis of the screw (2). During the upward movement, the plug (63) is driven to passively separate from the drain hole so that zero-discharge water can flow out of the drain hole; at the same time, the powder box (51) is driven to move upward toward the receiving box (34) so ​​that the flocculant in the powder box (51) can fall from the through hole (511) into the receiving box (34).

2. A multi-waste concentrated acid zero-discharge water recovery device according to claim 1, characterized in that: The material spreading assembly also includes a reciprocating screw rod (32) rotatably connected to the transverse plate (31), the end of the reciprocating screw rod (32) slidingly abuts against the travel groove, the reciprocating screw rod (32) is fixedly connected to the first gear (36), the transverse plate (31) is slidably connected to a moving plate (33), the moving plate (33) is screwed to the reciprocating screw rod (32), and the material receiving box (34) is fixedly connected to the moving plate (33).

3. A multi-waste concentrated acid zero-discharge water recovery device according to claim 1, characterized in that: The travel groove is composed of a vertical section (11) and an arc section (12) which are connected to each other.

4. A multi-waste concentrated acid zero-discharge water recovery device according to claim 1, characterized in that: A spring (38) is provided between the blocking door (37) and the material receiving box (34).

5. A multi-waste concentrated acid zero-discharge water recovery device according to claim 1, characterized in that: The stirring mechanism (4) further comprises an inclined plate (41) fixedly connected to the transverse plate (31), the inclined plate (41) abuttingly engaging with the rotating shaft (43), a second gear (44) fixedly connected to the rotating shaft (43), a first rack (42) fixedly connected to the transverse plate (31), the first rack (42) meshingly engaging with the second gear (44), an intermittent member (45) fixedly connected to the rotating shaft (43), and the intermittent member (45) abuttingly engaging with each blocking door (37).

6. A multi-waste concentrated acid zero-discharge water recovery device according to claim 4, characterized in that: The intermittent member (45) is provided with a plurality of protrusions (451) and reset recesses (452).

7. The device for recovering concentrated acid from waste water of claim 1, characterized in that: The feeding assembly also includes a slide plate (52), which is slidably connected to the bottom of the powder box (51) and is sealed with the through hole (511); a rotating rod (53) is rotatably connected to the powder box (51); a lever (57) is fixedly connected to the rotating rod (53); the lever (57) abuts against the slide plate (52); a pawl (54) is elastically provided on the rotating rod (53); a ratchet (55) is rotatably connected to the rotating rod (53); the pawl (54) and the ratchet (55) are snap-fitted; a third gear (56) is fixedly connected to the ratchet (55); a second rack (58) is fixedly connected to the fixed plate (21); the second rack (58) is meshed with the third gear (56).

8. The multi-waste concentrated acid zero-discharge water recovery device according to claim 1, characterized in that: The launching mechanism (6) further comprises a rotating member (61) rotatably connected to the tank body (1), two arc grooves (611) are provided on the rotating member (61) in a circumferential array, abutment rods (62) are fixedly connected to both sides of the plug (63), the two abutment rods (62) are respectively and one by one correspondingly slidably abutted with the two arc grooves (611), first connecting rods (64) are hingedly connected to both sides of the rotating member (61), and the ends of the two first connecting rods (64) that are away from each other are rotatably abutted with second connecting rods (65), and the second connecting rods (65) is rotatably connected to the inner wall of the tank body (1), one end of the second connecting rod (65) is rotatably connected to the third connecting rod (66), the third connecting rod (66) is fixedly connected to a lifting block (67), the lifting block (67) is vertically slidably connected to the inner wall of the tank body (1), and the lifting block (67) is abutted against the top of the horizontal plate (31), the third connecting rod (66) is hinged with a fourth connecting rod (68), one end of the fourth connecting rod (68) is rotatably connected to the powder box (51).

9. A multi-waste concentrated acid zero-discharge water recovery device according to claim 8, characterized in that: A torsion spring is arranged between the rotating member (61) and the tank body (1).

10. The device for recovering concentrated acid from waste water of claim 1, characterized in that: The bottom of the horizontal plate (31) is detachably provided with a filter screen.

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