Boiler blow-down water recovery treatment device and method

Abstract

The invention relates to the technical field of sewage treatment, in particular to a boiler blow-down water recovery treatment device and method.The boiler blow-down water recovery treatment device comprises a treatment barrel, a liquid inlet barrel, a water pump, a stirring precipitation unit and a filtering unit; the sewage treatment device can solve the following problems in the sewage recovery treatment process in the prior art: enough time cannot be provided to precipitate flocculate, so that a large amount of flocculate easily causes blockage of a filter screen, the filtering efficiency is further influenced, the flow of sewage passing through the filter screen is easily reduced, and the filtering efficiency is reduced; according to the sewage treatment device, stirred and mixed sewage and a flocculating agent can be intercepted, so that flocculates and particle impurities in a mixed solution have sufficient time to stand and precipitate, and the separation effect between a clear solution and precipitates can be effectively enhanced; and then precipitates are thrown out, so that the situation that the filtering effect is influenced by blocking the collecting mesh plate and reducing the flow rate of discharged clear liquid is avoided, and the sewage treatment effect is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a boiler sewage recovery and treatment device and method. Background Art

[0002] Boiler wastewater mainly comes from the regular and continuous discharge of boilers. These wastewaters contain a large amount of dissolved salts, suspended matter and other impurities. In order to avoid direct discharge of wastewater and polluting the environment, it is necessary to purify and recycle the wastewater accordingly. This not only avoids pollution to the environment, but also recycles water resources for reuse, such as agricultural irrigation, industrial water and greening irrigation. For the recycling of wastewater, sedimentation, filtration and chemical treatment are generally used to remove harmful substances in wastewater.

[0003] In the prior art, a large number of corresponding devices for recycling and utilizing sewage are also disclosed. For a more accurate comparison, for example, Chinese patent publication number CN110803800A discloses a boiler sewage recycling and treatment device for a thermal power plant, including a neutralization device, a flocculation device, a filtering device and a sewage discharge pipe. The neutralization device and the flocculation device are fixedly connected through the sewage discharge pipe, and the flocculation device and the filtering device are fixedly connected through the sewage discharge pipe. The filtering device includes a filter box, a primary filter screen and a high-efficiency filter screen.

[0004] When the above-mentioned prior art recycles and treats sewage, the sewage is transported to a neutralization device through a sewage discharge pipe and evenly mixed with a neutralizing liquid to neutralize sulfates and sulfites in the sewage. The sewage discharge pipe then transports the neutralized sewage to a flocculation device, and then the flocculant is mixed and stirred with the sewage to accelerate the precipitation of suspended matter and heavy metals in the sewage. The sewage discharge pipe then transports the sewage to a filter box and filters out impurities, suspended matter and heavy metal precipitates in the sewage through a primary filter and a high-efficiency filter, and then the treated water is discharged through the sewage discharge pipe.

[0005] However, in the process of recycling sewage using the above-mentioned prior art, there are still the following shortcomings:

[0006] 1. Since the above-mentioned prior art mixes the flocculant and sewage and then directly transports them to the filter box, it cannot provide enough time for the floccules to settle. Therefore, the floccules will be transported to the filter box together with the sewage and increase the filtering burden of the filter screen and the high-efficiency filter screen. Therefore, a large amount of floccules will easily cause the filter screen and the high-efficiency filter screen to be blocked, thereby affecting the filtering efficiency.

[0007] 2. In addition, when the above-mentioned prior art filters sewage through a filter, impurities in the sewage will adhere to the filter, causing the impurities to gradually clog the mesh of the filter, and the above-mentioned prior art cannot remove the impurities in the filter box. Therefore, the residual impurities are likely to reduce the flow rate of sewage passing through the filter, thereby reducing the filtration efficiency.

[0008] Therefore, based on the above-stated viewpoints, there is still room for improvement in the existing wastewater recycling and treatment methods. Summary of the invention

[0009] In order to solve the above problems, the present invention provides a boiler wastewater recovery and treatment device, including a treatment cylinder with one end tilted downward, and a liquid inlet cylinder connected to the upwardly tilted end of the treatment cylinder is provided, the liquid inlet cylinder is arranged vertically upward, and a bracket is installed at the lower end of the treatment cylinder, and a water pump is installed on the outer wall of the bracket through a supporting plate, and the water outlet end of the water pump extends into the interior of the treatment cylinder after passing through the treatment cylinder, and a stirring and sedimentation unit for stirring and mixing sewage and flocculant and a filtering unit for filtering the flocculated precipitate are sequentially arranged on the inner wall of the treatment cylinder toward the side away from the liquid inlet cylinder.

[0010] The stirring and sedimentation unit includes a cross frame installed on the inner wall of the treatment cylinder close to the liquid inlet cylinder, a rotating shaft is rotatably installed on the side of the cross frame away from the liquid inlet cylinder, and a plurality of annularly distributed stirring blades are evenly arranged on the outer wall of the rotating shaft. The filtering unit includes an intercepting plate installed on the treatment cylinder.

[0011] As a preferred technical solution of the present invention, a liquid storage cavity coincident with its axis is opened inside the rotating shaft, the water outlet end of the water pump is connected with the liquid storage cavity through a connecting pipe, and a plurality of drainage holes connected with the liquid storage cavity are evenly opened on the outer wall of the rotating shaft.

[0012] As a preferred technical solution of the present invention, the stirring sedimentation unit also includes a driving motor, the driving motor is installed on the outer wall of the processing cylinder through a motor seat, a belt is sleeved between the output shaft of the driving motor and the rotating shaft, and a closing component for closing and opening the processing cylinder is installed at the end of the rotating shaft away from the liquid inlet cylinder.

[0013] As a preferred technical solution of the present invention, a plurality of through holes are provided on the stirring blade, and an auxiliary component for enhancing the stirring and mixing effect is installed between the stirring blade and the processing cylinder.

[0014] As a preferred technical solution of the present invention, the auxiliary component includes a displacement block slidably arranged on the side of the stirring blade away from the rotating shaft, a force-bearing block is installed on the side of the displacement block away from the stirring blade, an annular corrugated strip is arranged on the inner wall of the treatment cylinder, and the force-bearing block is slidably clamped on the annular corrugated strip;

[0015] Two linkage groups are symmetrically arranged on the displacement block along the thickness direction of the stirring blade. The linkage group includes a material shifting plate installed on the displacement block through a support plate. A plurality of execution mesh plates are equidistantly arranged from top to bottom on one side of the material shifting plate away from the displacement block.

[0016] As a preferred technical solution of the present invention, the closing component includes a circular seat installed on the inner wall of the processing cylinder and located on the side of the rotating shaft away from the cross frame, a receiving groove is provided inside the circular seat, and two through holes are symmetrically provided on the circular seat, an annular frame is rotatably installed in the receiving groove, and two fan-shaped baffles symmetrically arranged on the outer wall of the annular frame are slidably arranged in the receiving groove.

[0017] As a preferred technical solution of the present invention, the inner wall of the annular frame is evenly provided with a plurality of annularly distributed grooves, and a driving column rotatably docked on the inner side of the annular frame is installed at one end of the rotating shaft away from the cross frame, and a plurality of connecting grooves corresponding to the positions of the grooves are opened on the outer wall of the driving column, and a top block is installed inside the connecting groove through a supporting spring rod.

[0018] As a preferred technical solution of the present invention, the filtering unit further comprises two slots provided on the side of the processing cylinder away from the liquid inlet cylinder, the intercepting plate is rotatably inserted into the slot close to the liquid inlet cylinder, two drop holes are symmetrically provided on the intercepting plate, and a collecting mesh plate is rotatably inserted into the slot away from the liquid inlet cylinder;

[0019] A storage cavity is provided inside the collecting mesh plate, and two collecting ports which are staggered with the material dropping holes are provided on one side of the collecting mesh plate close to the intercepting plate, the collecting ports are connected with the storage cavity, a plurality of material throwing ports which are connected with the storage cavity are evenly provided on the outer wall of the collecting mesh plate, a protective cover which is arranged on the outside of the collecting mesh plate is installed on the outer wall of the processing cylinder, and a material discharge port is provided at the lower end of the protective cover.

[0020] As a preferred technical solution of the present invention, the outer wall of the treatment cylinder is equipped with a first motor located on the side of the interception plate close to the liquid inlet cylinder through a motor cover, and a connecting cylinder is arranged between the output shaft of the first motor and the collecting mesh plate after passing through the middle of the interception plate;

[0021] A second motor is installed on the outer wall of the processing cylinder through a motor frame and is located on the side of the collecting mesh plate away from the intercepting plate. A linkage shaft is installed on the output shaft of the second motor. The linkage shaft rotates through the collecting mesh plate and extends into the storage cavity. A rotating plate located inside the storage cavity is sleeved on the outer wall of the linkage shaft. A plurality of annularly distributed material throwing racks are installed on the outer wall of the rotating plate. The end of the material throwing rack away from the rotating plate is bent toward the side away from its movement direction.

[0022] In addition, the present invention also provides a boiler wastewater recovery and treatment method, comprising the following steps:

[0023] S1: Sewage discharge: First, the sewage discharged from the boiler enters the treatment cylinder through the liquid inlet cylinder;

[0024] S2: Adding flocculants and mixing: Secondly, the flocculants are discharged into the treatment cylinder, and then the sewage and flocculants are fully stirred and mixed through the stirring and sedimentation unit, so that the particles, suspended matter and other impurities in the sewage are flocculated and precipitated;

[0025] S3: Mixed liquid filtration: Filter the flocculated sewage through the filtration unit to remove the flocculants and residual fine particles in the sewage;

[0026] S4: Clear liquid discharge: The treated water is discharged along the treatment tube and then collected in a container for recycling.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. The present invention drives the stirring blades through the rotating shaft to stir and mix the mixed liquid formed by the sewage and the flocculant, and the mixed liquid is further stirred and mixed under the action of the material-discharging plate after being stirred by the stirring blades, thereby further improving the mixing efficiency; at the same time, the force-bearing block drives the displacement block, the material-discharging plate and the execution mesh plate to move back and forth as a whole along the axial direction of the treatment cylinder under the action of the annular wave bar, so that the execution mesh plate can disrupt the sewage and the flocculant, making the sewage and the flocculant easier to mix, thereby further improving the mixing effect.

[0029] 2. The present invention can respectively stir and mix the sewage and flocculant and discharge them downward by controlling the forward and reverse rotation of the rotating shaft. When the rotating shaft rotates forward, it can drive the fan-shaped plate to close the through hole, so that the sewage and flocculant can be accumulated in the treatment cylinder and will not flow out. The stirring time of the sewage and flocculant can be extended, so as to effectively enhance the stirring and mixing efficiency, thereby ensuring the flocculation effect on the sewage.

[0030] 3. The present invention can intercept the sewage and flocculant that have been stirred and mixed by sealing the treatment cylinder with an interception plate, so that the flocculants and particulate impurities in the mixed liquid have sufficient time to settle, which can effectively enhance the separation effect between the clear liquid and the sediment. The interception plate is then controlled to rotate to make the mixed liquid with the sediment flow downward into the storage chamber. Subsequently, the second motor drives the rotating plate and the material throwing rack to rotate synchronously through the linkage shaft. The material throwing rack throws the sediment in the storage chamber and discharges it through the material throwing port, thereby preventing the sediment from clogging the collection mesh plate and reducing the discharge flow of the clear liquid to affect the filtration effect, thereby enhancing the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is a structural schematic diagram of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the stirring sedimentation unit of the present invention.

[0034] Figure 3 The present invention Figure 2 A partial enlarged view of point A.

[0035] Figure 4 It is a schematic diagram of the structure among the cross frame, the rotating shaft, the stirring blades and the auxiliary components of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure of the auxiliary components of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the closing component of the present invention.

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of the circular seat of the present invention.

[0039] Figure 8 The present invention Figure 6 A partial enlarged view of point B.

[0040] Fig. 9 It is a schematic structural diagram of the filter unit of the present invention.

[0041] Fig.10 It is a schematic diagram of the decomposed structure of the filter unit of the present invention.

[0042] Fig.11 It is a schematic diagram of the structure between the treatment cylinder and the drainage pipe of the present invention.

[0043] In the figure, 1, treatment cylinder; 2, liquid inlet cylinder; 3, bracket; 4, water pump; 5, stirring and sedimentation unit; 51, cross frame; 52, rotating shaft; 521, liquid storage chamber; 522, connecting pipe; 523, drainage hole; 53, stirring blade; 531, through hole; 532, auxiliary component; 533, displacement block; 534, force block; 535, annular wave strip; 536, material removal plate; 537, material penetration hole; 538, execution mesh plate; 54, driving motor; 55, belt; 56, closing component; 561, circular Seat; 562, storage slot; 563, through hole; 564, annular frame; 565, fan-shaped baffle; 566, driving column; 567, supporting spring rod; 568, top block; 569, blocking bar; 6, filter unit; 61, intercepting plate; 62, drop hole; 63, collecting mesh plate; 64, storage chamber; 65, collecting port; 66, throwing port; 67, protective cover; 68, first motor; 69, connecting tube; 70, second motor; 71, linkage shaft; 72, rotating plate; 73, throwing rack; 74, drain pipe. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-Figure 11 Embodiments of the present invention are described in detail.

[0045] The embodiment of the present application discloses a boiler wastewater recovery and treatment device. It should be noted that the boiler wastewater recovery and treatment device of the present application is mainly used in the process of filtering and purifying boiler wastewater. In terms of technical effect, flocculant can be added to the sewage, and then the mixed liquid formed by the sewage and the flocculant is stirred and mixed, so that the impurities in the sewage are quickly flocculated and precipitated, and then the precipitate is filtered and the clear liquid is recovered to achieve the recovery and reuse of the sewage. In particular, during the stirring and mixing process of the sewage and the flocculant, the treatment cylinder 1 can be closed, so that the sewage and the flocculant can be accumulated in the treatment cylinder 1 and will not flow out, and the stirring time of the sewage and the flocculant can be extended, so as to effectively enhance the stirring and mixing efficiency, thereby ensuring the flocculation effect on the sewage. Furthermore, the boiler wastewater recovery and treatment device of the present application can also intercept the sewage and flocculant that have been stirred and mixed, so that the flocculants and particulate impurities in the mixed liquid have sufficient time to stand and settle, which can effectively enhance the separation effect between the clear liquid and the precipitate, and then the precipitate is filtered out and the clear liquid is recovered to achieve the recovery and reuse of the sewage.

[0046] Reference Figure 1 and Figure 2 As shown, a boiler wastewater recovery and treatment device includes a treatment cylinder 1 with one end tilted downward, and a liquid inlet cylinder 2 connected to the treatment cylinder 1 is provided at the upwardly tilted end of the treatment cylinder 1, and the liquid inlet cylinder 2 is arranged vertically upward. A bracket 3 is installed at the lower end of the treatment cylinder 1, and a water pump 4 is installed on the outer wall of the bracket 3 through a supporting plate. The pumping end of the water pump 4 is connected to an external flocculant storage container, and the water outlet end of the water pump 4 extends to the inside of the treatment cylinder 1 after passing through the treatment cylinder 1. A stirring sedimentation unit 5 for stirring and mixing sewage and flocculant and a filtering unit 6 for filtering the flocculated sediment are sequentially arranged on the inner wall of the treatment cylinder 1 toward the side away from the liquid inlet cylinder 2.

[0047] Furthermore, in the present embodiment, the stirring and sedimentation unit 5 includes a cross frame 51 installed on the inner wall of the treatment cylinder 1 close to the liquid inlet cylinder 2, and the cross frame 51 is rotatably installed with a rotating shaft 52 on the side away from the liquid inlet cylinder 2, and the outer wall of the rotating shaft 52 is evenly provided with a plurality of annularly distributed stirring blades 53, and the filtering unit 6 includes an intercepting plate 61 installed on the treatment cylinder 1.

[0048] In the specific implementation process, firstly, the sewage pipe of the boiler is connected with the liquid inlet cylinder 2, so that the sewage enters the treatment cylinder 1 through the liquid inlet cylinder 2, and then the water pump 4 is started, and the water pump 4 discharges the external flocculant into the treatment cylinder 1. At the same time, the sewage and the flocculant are fully stirred and mixed by the stirring and sedimentation unit 5, so that the particulate matter, suspended matter and other impurities in the sewage are flocculated and precipitated, and then the flocculated sewage flows downward along the treatment cylinder 1 to the filter unit 6. The filter unit 6 can filter out the flocculants and residual fine particles in the sewage, and then the treated water is discharged along the treatment cylinder 1, and then the container is used for recovery to achieve flocculation, filtration and recycling of the sewage, thereby avoiding direct sewage discharge to pollute the environment and reducing the waste of water resources.

[0049] Reference Figure 2 and Figure 3 As shown, in order to ensure rapid fusion of the flocculant and the sewage in the treatment barrel 1, in this embodiment, a liquid storage chamber 521 coinciding with its axis is opened inside the rotating shaft 52, the water outlet end of the water pump 4 is connected to the liquid storage chamber 521 through a connecting pipe 522, and a plurality of drainage holes 523 connected to the liquid storage chamber 521 are evenly opened on the outer wall of the rotating shaft 52.

[0050] During the specific implementation process, the water pump 4 discharges the flocculant into the liquid storage chamber 521 through the connecting pipe 522, so that the flocculant in the liquid storage chamber 521 gradually increases and generates pressure, so that the flocculant in the liquid storage chamber 521 is discharged into the sewage inside the treatment cylinder 1 through the drainage hole 523 under the action of pressure. The multiple drainage holes 523 on the outer wall of the rotating shaft 52 can ensure the uniformity of the flocculant discharged into the sewage, so as to accelerate the fusion between the flocculant and the sewage, which is beneficial to the subsequent stirring and mixing.

[0051] Continue to refer to Figure 2 As shown, in order to enable the impurities in the sewage to flocculate quickly, it is necessary to quickly stir the sewage and the flocculant. Based on this, a stirring and sedimentation unit 5 is provided in this embodiment. Specifically, the stirring and sedimentation unit 5 also includes a driving motor 54. The driving motor 54 is installed on the outer wall of the treatment cylinder 1 through a motor seat. A belt 55 is sleeved between the output shaft of the driving motor 54 and the rotating shaft 52. The belt 55 is located inside the cross frame 51. An installation groove for accommodating the belt 55 is provided between the extension section of the cross frame 51 pointing to the side of the driving motor 54 and the treatment cylinder 1. A closing component 56 for closing and opening the treatment cylinder 1 is installed at the end of the rotating shaft 52 away from the liquid inlet cylinder 2.

[0052] In the specific implementation process, after the sewage and flocculant are discharged into the treatment barrel 1, the drive motor 54 is started, and the output shaft of the drive motor 54 drives the rotating shaft 52 to rotate synchronously through the belt 55, and the rotating shaft 52 drives the multiple stirring blades 53 on its outer wall to move synchronously in a circumferential direction, so that the stirring blades 53 stir and mix the sewage and flocculant inside the treatment barrel 1, so that the impurities in the sewage are quickly flocculated and precipitated.

[0053] Reference Figure 4 and Figure 5 As shown, in order to improve the stirring and mixing efficiency between sewage and flocculant, in this embodiment, a plurality of through holes 531 are opened on the stirring blade 53, and an auxiliary component 532 for enhancing the stirring and mixing effect is installed between the stirring blade 53 and the treatment cylinder 1.

[0054] Furthermore, in this embodiment, the auxiliary component 532 includes a displacement block 533 slidably arranged on the side of the stirring blade 53 away from the rotating shaft 52, and a force block 534 is installed on the side of the displacement block 533 away from the stirring blade 53. The inner wall of the processing cylinder 1 is provided with an annular wave strip 535, and the annular wave strip 535 is composed of a plurality of arc-shaped raised sections and a plurality of arc-shaped recessed sections that are staggered. The force block 534 is slidably clamped on the annular wave strip 535, and the force block 534 can move back and forth up and down along the arc-shaped raised sections and the arc-shaped recessed sections of the annular wave strip 535 when it moves circumferentially.

[0055] Furthermore, in the present embodiment, two linkage groups are symmetrically arranged on the displacement block 533 along the thickness direction of the stirring blade 53, and the linkage group includes a material removing plate 536 installed on the displacement block 533 through a support plate, the material removing plate 536 is parallel to the stirring blade 53, and a plurality of material penetration holes 537 are equidistantly provided on the material removing plate 536 from top to bottom, and a plurality of execution mesh plates 538 are equidistantly provided on the side of the material removing plate 536 away from the displacement block 533 from top to bottom.

[0056] During the specific implementation process, when the rotating shaft 52 drives the stirring blade 53 to move circumferentially, the stirring blade 53 stirs and mixes the mixed liquid formed by the sewage and the flocculant, and the mixed liquid can be mixed faster when passing through the through hole 531 on the stirring blade 53; at the same time, the stirring blade 53 drives the displacement block 533, the force block 534, the material plate 536 and the execution mesh plate 538 to move circumferentially as a whole, so that the force block 534 drives the displacement block 533, the material plate 536 and the execution mesh plate 538 to move back and forth along the axial direction of the treatment tube 1 as a whole under the action of the annular wave bar 535, so that the mixed liquid passes through the through hole 531 on the stirring blade 53 and is further stirred and mixed under the action of the material plate 536 with the penetration hole 537, thereby further improving the mixing efficiency.

[0057] In addition, when the stirring blades 53 stir the sewage and flocculant, the sewage and flocculant rotate along the inner wall of the treatment tube 1. At this time, the execution mesh plate 538 that moves back and forth in the circumferential motion can disrupt the sewage and flocculant, making the sewage and flocculant easier to mix, thereby further improving the mixing effect.

[0058] Reference Figure 6 , Figure 7 and Figure 8 As shown, in order to ensure that the sewage and flocculant in the treatment barrel 1 have sufficient time to be stirred and fused, a corresponding closing component 56 is also provided in this embodiment. Specifically, the closing component 56 includes a circular seat 561 installed on the inner wall of the treatment barrel 1 and located on the side of the rotating shaft 52 away from the cross frame 51. A receiving groove 562 is provided inside the circular seat 561, and two through holes 563 are symmetrically provided on the circular seat 561. An annular frame 564 is rotatably installed in the receiving groove 562, and two fan-shaped baffles 565 slidably arranged in the receiving groove 562 are symmetrically arranged on the outer wall of the annular frame 564. The area of ​​the fan-shaped baffle 565 is larger than the area of ​​the through hole 563. In the initial state, the fan-shaped baffle 565 overlaps with the through hole 563 and closes it, so that the treatment barrel 1 can be closed.

[0059] Furthermore, in this embodiment, a plurality of annularly distributed grooves are evenly formed on the inner wall of the annular frame 564, and a driving column 566 rotatably docked on the inner side of the annular frame 564 is installed at one end of the rotating shaft 52 away from the cross frame 51, and a plurality of connecting grooves corresponding to the positions of the grooves are formed on the outer wall of the driving column 566, and a top block 568 is installed inside the connecting groove via a supporting spring rod 567.

[0060] It should be noted that the supporting spring rod 567 always applies a driving force to the top block 568 pointing to the side away from the axis of the driving column 566, so that the top block 568 slides against the groove. When the top block 568 and the groove are in conflict with each other, the driving column 566 and the annular frame 564 are in a relatively static state. The rotating shaft 52 drives the driving column 566 to rotate, which can drive the annular frame 564 and the fan-shaped baffle 565 to rotate synchronously. When the top block 568 and the groove are staggered, the driving column 566 and the annular frame 564 return to their initial rotation state, and the driving column 566 can no longer drive the annular frame 564 to rotate.

[0061] During the specific implementation process, when sewage and flocculant are discharged into the treatment barrel 1, they can be accumulated in the treatment barrel 1 and will not flow out. At this time, the driving motor 54 drives the rotating shaft 52 to rotate forward, and the rotating shaft 52 drives the stirring blades to fully stir and mix the sewage and flocculant. By closing the treatment barrel 1, the stirring time of the sewage and flocculant can be extended, so as to effectively enhance the stirring and mixing efficiency, thereby ensuring the flocculation effect on the sewage.

[0062] In addition, two blocking bars 569 corresponding to the fan-shaped plates are installed in the receiving groove 562. The blocking bars 569 are used to limit the fan-shaped plates. When the rotating shaft 52 rotates forward, the fan-shaped plates are driven to close the through holes 563. The side of the fan-shaped plates close to the moving direction conflicts with the blocking bars 569 (at Figure 7 ), at this time, the rotation direction of the sector plate and the annular frame 564 as a whole can be limited, so that when the driving column 566 drives the top block 568 to move circumferentially, the top block 568 is limited by the groove and adaptively retracts into the connecting groove, so that the driving column 566 and the annular frame 564 are restored to the rotation state under the limiting action of the blocking bar 569, thereby preventing the sewage and flocculant above the circular seat 561 from flowing downward, so that the sewage and flocculant above the circular seat 561 have sufficient time to be fully stirred and mixed.

[0063] After the sewage and flocculant are mixed, the driving motor 54 drives the rotating shaft 52 to reverse, and the rotating shaft 52 drives the stirring blades and the driving column 566 to rotate in the opposite direction, so that the driving column 566 drives the top block 568 to abut against the groove and then drives the annular frame 564 and the fan-shaped plate to rotate in the opposite direction as a whole, so that the fan-shaped plate and the through hole 563 are gradually staggered, so as to open the through hole 563 and allow the mixed liquid to flow out downward.

[0064] Reference Fig. 9 and Fig.10 As shown, in order to facilitate the removal of flocculants and particulate impurities in the mixed liquid, a corresponding filter unit 6 is provided in this embodiment. Specifically, the filter unit 6 also includes two slots opened on the side of the processing cylinder 1 away from the liquid inlet cylinder 2, and the two slots are arranged along the axial direction of the processing cylinder 1. The intercepting plate 61 is rotatably inserted in the slot close to the side of the liquid inlet cylinder 2. Two drop holes 62 are symmetrically opened on the intercepting plate 61, and a collecting mesh plate 63 is rotatably inserted in the slot away from the side of the liquid inlet cylinder 2.

[0065] Furthermore, in this embodiment, a storage cavity 64 is provided inside the collecting mesh plate 63, and two collecting ports 65 are provided on one side of the collecting mesh plate 63 close to the intercepting plate 61 and are staggered with the material dropping holes 62, the collecting ports 65 are connected with the storage cavity 64, a plurality of material discharge ports 66 connected with the storage cavity 64 are evenly provided on the outer wall of the collecting mesh plate 63, a protective cover 67 which is provided on the outside of the collecting mesh plate 63 is installed on the outer wall of the processing cylinder 1, and a material discharge port is provided at the lower end of the protective cover 67.

[0066] In the initial state, the drop hole 62 of the intercepting plate 61 is staggered with the treatment cylinder 1, so that the intercepting plate 61 can close the treatment cylinder 1, and then can intercept the sewage and flocculant that have been stirred and mixed, so that the flocculants and particulate impurities in the mixed liquid have sufficient time to settle, which can effectively enhance the separation effect between the clear liquid and the sediment.

[0067] Furthermore, in the present embodiment, a first motor 68 is installed on the outer wall of the processing cylinder 1 through a motor cover and is located on the side of the intercepting plate 61 close to the liquid inlet cylinder 2. The output shaft of the first motor 68 is fixed through the middle of the intercepting plate 61 and a connecting cylinder 69 is arranged between the first motor 68 and the collecting mesh plate 63; a second motor 70 is installed on the outer wall of the processing cylinder 1 through a motor frame and is located on the side of the collecting mesh plate 63 away from the intercepting plate 61. A linkage shaft 71 is installed on the output shaft of the second motor 70. The linkage shaft 71 rotates through the collecting mesh plate 63 and extends into the storage cavity 64. A rotating plate 72 located inside the storage cavity 64 is fixedly sleeved on the outer wall of the linkage shaft 71. A plurality of annularly distributed material throwing racks 73 are installed on the outer wall of the rotating plate 72. The end of the material throwing rack 73 away from the rotating plate 72 is bent toward the side away from its movement direction.

[0068] During the specific implementation process, the first motor 68 is started, and the first motor 68 drives the intercepting plate 61 and the collecting mesh plate 63 to rotate. After the flocculants and particulate impurities in the mixed liquid above the intercepting plate 61 are precipitated, the intercepting plate 61 is rotated to connect the drop hole 62 with the treatment cylinder 1, so that the mixed liquid with the sediment flows downward to the collecting mesh plate 63; when the collecting mesh plate 63 is rotated to connect the collecting port 65 with the treatment cylinder 1, the mixed liquid with the sediment enters the storage chamber 64, so that the water therein is discharged along the treatment cylinder 1 after the filtering action of the collecting mesh plate 63, and the sediment is filtered in the storage chamber 64.

[0069] At the same time, the second motor 70 is started, and the second motor 70 drives the rotating plate 72 and the ejection rack 73 to rotate synchronously through the linkage shaft 71, and the rotation speed of the rotating plate 72 is greater than the rotation speed of the collecting mesh plate 63. The ejection rack 73 throws out the sediment in the storage chamber 64, so that the sediment is discharged through the ejection port 66 and discharged along the discharge port under the action of the protective cover 67, thereby preventing the sediment from clogging the collecting mesh plate 63 and reducing the flow rate of the clear liquid discharge to affect the filtration effect, thereby enhancing the treatment effect of the sewage; the filtered water is discharged along the treatment cylinder 1, and can be recycled and reused by using a container to receive the recovery, thereby reducing the waste of water resources.

[0070] Reference Fig.11 As shown, it should be noted that a drain pipe 74 connected to the processing cylinder 1 is installed at the bottom thereof, and the drain pipe 74 is located on the side of the intercepting plate 61 close to the liquid inlet cylinder 2, and a filter screen (not shown in the figure) is installed at the upper end of the drain pipe 74. When the stirred mixed liquid flows into the intercepting plate 61 and is left to settle, the clear liquid in the mixed liquid flows downward through the drain pipe 74 after being filtered by the filter screen, and the sediment in the mixed liquid accumulates above the intercepting plate 61, and can then be collected by an external container for recycling.

[0071] In addition, the present invention also provides a boiler wastewater recovery and treatment method, comprising the following steps:

[0072] S1: sewage discharge: firstly, the sewage discharge pipe of the boiler is connected with the liquid inlet cylinder 2, so that the sewage enters the inside of the treatment cylinder 1 through the liquid inlet cylinder 2 and accumulates in the treatment cylinder 1 without flowing out.

[0073] S2: Adding flocculant and mixing: Start the water pump 4, which discharges the external flocculant into the interior of the treatment barrel 1. At the same time, start the drive motor 54. The output shaft of the drive motor 54 drives the rotating shaft 52 to rotate synchronously in the forward direction through the belt 55. When the rotating shaft 52 rotates forward, it drives the fan-shaped plate to close the through hole 563. The side of the fan-shaped plate close to its movement direction conflicts with the blocking bar 569, so that the driving column 566 and the annular frame 564 are in a relative rotation state, and the sewage and flocculant above the circular seat 561 cannot flow downward, so that the sewage and flocculant above the circular seat 561 have sufficient time to be fully stirred and mixed.

[0074] While the rotating shaft 52 rotates forward, it drives the multiple stirring blades 53 on its outer wall to move synchronously in a circumferential direction, so that the stirring blades 53 stir and mix the sewage and flocculant inside the treatment tube 1, so that the impurities in the sewage are quickly flocculated and precipitated. By closing the treatment tube 1, the stirring time of the sewage and the flocculant can be extended, so as to effectively enhance the stirring and mixing efficiency, thereby ensuring the flocculation effect on the sewage.

[0075] When the rotating shaft 52 drives the stirring blade 53 to move circumferentially, the stirring blade 53 drives the displacement block 533, the force block 534, the material plate 536 and the execution mesh plate 538 to move circumferentially as a whole, so that the force block 534 drives the displacement block 533, the material plate 536 and the execution mesh plate 538 to move back and forth as a whole along the axial direction of the treatment tube 1 under the action of the annular wave bar 535, so that the mixed liquid passes through the through hole 531 on the stirring blade 53 and is further stirred and mixed under the action of the material plate 536 with a through hole 537, thereby further improving the mixing efficiency; during this period, the execution mesh plate 538 that moves back and forth during the circumferential motion can disrupt the sewage and the flocculant, making the sewage and the flocculant easier to mix, thereby further improving the mixing effect.

[0076] After the sewage and flocculant are mixed, the driving motor 54 drives the rotating shaft 52 to reverse, and the rotating shaft 52 drives the stirring blades and the driving column 566 to rotate in the opposite direction, so that the driving column 566 drives the top block 568 to abut against the groove and then drives the annular frame 564 and the fan-shaped plate to rotate in the opposite direction as a whole, so that the fan-shaped plate and the through hole 563 are gradually staggered, so as to open the through hole 563 and allow the mixed liquid to flow out downward.

[0077] S3: Filtration of mixed liquid: The treatment cylinder 1 is intercepted and closed by the interception plate 61, and the mixed liquid can be accumulated above the interception plate 61, so that the flocculants and particulate impurities in the mixed liquid are allowed to settle; after the flocculants and particulate impurities are settled, the first motor 68 is started, and the first motor 68 drives the interception plate 61 and the collecting mesh plate 63 to rotate, and the interception plate 61 rotates to connect the drop hole 62 with the treatment cylinder 1, so that the mixed liquid with the sediment can flow downward to the collecting mesh plate 63; when the collecting mesh plate 63 rotates to connect the collecting port 65 with the treatment cylinder 1, the mixed liquid with the sediment enters the storage chamber 64, so that the water therein is discharged along the treatment cylinder 1 after the filtering action of the collecting mesh plate 63, and the sediment is filtered in the storage chamber 64.

[0078] At the same time, the second motor 70 is started, and the second motor 70 drives the rotating plate 72 and the throwing rack 73 to rotate synchronously and rapidly through the linkage shaft 71. The throwing rack 73 throws out the sediment in the storage chamber 64, so that the sediment is discharged through the throwing port 66 and discharged along the discharge port under the action of the protective cover 67, thereby preventing the sediment from clogging the collecting mesh plate 63 and affecting the filtering effect, thereby enhancing the sewage treatment effect.

[0079] S4: Clear liquid discharge: During the sedimentation process of the mixed liquid, the clear liquid therein flows downward through the drain pipe 74 and can be collected by an external container for recycling; and the filtered water is discharged along the treatment cylinder 1 and can be collected by a container for recycling, thereby reducing the waste of water resources.

[0080] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0081] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A boiler wastewater recovery and treatment device, comprising a treatment cylinder (1) with one end tilted downward, a liquid inlet cylinder (2) connected to the treatment cylinder (1) is provided at the upwardly tilted end, the liquid inlet cylinder (2) is arranged vertically upward, a bracket (3) is installed at the lower end of the treatment cylinder (1), a water pump (4) is installed on the outer wall of the bracket (3) through a supporting plate, and the water outlet end of the water pump (4) passes through the treatment cylinder (1) and extends to the inside thereof, characterized in that: The inner wall of the treatment cylinder (1) is provided with a stirring sedimentation unit (5) for stirring and mixing sewage and flocculant, and a filtering unit (6) for filtering the flocculated sediment in sequence on the side away from the liquid inlet cylinder (2), wherein: The stirring and settling unit (5) comprises a cross-shaped frame (51) mounted on the inner wall of the treatment cylinder (1) close to the liquid inlet cylinder (2), a rotating shaft (52) is rotatably mounted on the side of the cross-shaped frame (51) away from the liquid inlet cylinder (2), and a plurality of stirring blades (53) distributed in an annular pattern are evenly arranged on the outer wall of the rotating shaft (52). The filtering unit (6) comprises an intercepting plate (61) mounted on the treatment cylinder (1).

2. A boiler wastewater recovery and treatment device according to claim 1, characterized in that: The rotating shaft (52) is provided with a liquid storage cavity (521) which coincides with its axis line, the water outlet end of the water pump (4) is connected to the liquid storage cavity (521) via a connecting pipe (522), and the outer wall of the rotating shaft (52) is evenly provided with a plurality of liquid discharge holes (523) which are connected to the liquid storage cavity (521).

3. A boiler wastewater recovery and treatment device according to claim 1, characterized in that: The stirring and settling unit (5) further comprises a driving motor (54), the driving motor (54) being mounted on the outer wall of the treatment cylinder (1) via a motor seat, a belt (55) being sleeved between the output shaft of the driving motor (54) and the rotating shaft (52), and a closing assembly (56) for closing and opening the treatment cylinder (1) being mounted at one end of the rotating shaft (52) away from the liquid inlet cylinder (2).

4. A boiler wastewater recovery and treatment device according to claim 1, characterized in that: The stirring blade (53) is provided with a plurality of through holes (531), and an auxiliary component (532) for enhancing the stirring and mixing effect is installed between the stirring blade (53) and the processing cylinder (1).

5. A boiler wastewater recovery and treatment device according to claim 4, characterized in that: The auxiliary component (532) comprises a displacement block (533) slidably arranged on the side of the stirring blade (53) away from the rotating shaft (52); a force-bearing block (534) is installed on the side of the displacement block (533) away from the stirring blade (53); an annular wave strip (535) is arranged on the inner wall of the treatment cylinder (1); and the force-bearing block (534) is slidably engaged with the annular wave strip (535); Two linkage groups are symmetrically arranged on the displacement block (533) along the thickness direction of the stirring blade (53), and the linkage group includes a material-shifting plate (536) installed on the displacement block (533) through a support plate, and a plurality of execution mesh plates (538) are equidistantly arranged from top to bottom on one side of the material-shifting plate (536) away from the displacement block (533).

6. A boiler wastewater recovery and treatment device according to claim 3, characterized in that: The closing assembly (56) comprises a circular seat (561) mounted on the inner wall of the processing cylinder (1) and located on the side of the rotating shaft (52) away from the cross frame (51); a receiving groove (562) is provided inside the circular seat (561), and two through holes (563) are symmetrically provided on the circular seat (561); an annular frame (564) is rotatably mounted in the receiving groove (562), and two fan-shaped baffles (565) slidably arranged in the receiving groove (562) are symmetrically arranged on the outer wall of the annular frame (564).

7. A boiler wastewater recovery and treatment device according to claim 6, characterized in that: The inner wall of the annular frame (564) is evenly provided with a plurality of annularly distributed grooves, and a driving column (566) rotatably docked on the inner side of the annular frame (564) is installed at one end of the rotating shaft (52) away from the cross frame (51). The driving column (566) is provided with a plurality of connecting grooves corresponding to the positions of the grooves on the outer wall, and a top block (568) is installed inside the connecting groove via a supporting spring rod (567).

8. The boiler wastewater recovery and treatment device according to claim 1, characterized in that: The filtering unit (6) further comprises two slots provided on the side of the processing cylinder (1) away from the liquid inlet cylinder (2); the interception plate (61) is rotatably inserted into the slot on the side close to the liquid inlet cylinder (2); two drop holes (62) are symmetrically provided on the interception plate (61); and a collection mesh plate (63) is rotatably inserted into the slot on the side away from the liquid inlet cylinder (2); A storage cavity (64) is provided inside the collection mesh plate (63), and two collection ports (65) are arranged alternately with the material drop holes (62) on one side of the collection mesh plate (63) close to the interception plate (61), the collection ports (65) are communicated with the storage cavity (64), a plurality of material discharge ports (66) communicated with the storage cavity (64) are evenly provided on the outer wall of the collection mesh plate (63), and a protective cover (67) is installed on the outer wall of the processing cylinder (1) and is arranged outside the collection mesh plate (63), and a material discharge port is provided at the lower end of the protective cover (67).

9. A boiler wastewater recovery and treatment device according to claim 8, characterized in that: The outer wall of the treatment cylinder (1) is provided with a first motor (68) located on the side of the interception plate (61) close to the liquid inlet cylinder (2) through a motor cover, and the output shaft of the first motor (68) passes through the middle of the interception plate (61) and a connecting cylinder (69) is provided between the first motor (68) and the collection mesh plate (63); A second motor (70) is installed on the outer wall of the processing cylinder (1) through a motor frame and is located on the side of the collecting mesh plate (63) away from the intercepting plate (61). The output shaft of the second motor (70) is installed with a linkage shaft (71). The linkage shaft (71) rotates through the collecting mesh plate (63) and then extends into the storage chamber (64). The outer wall of the linkage shaft (71) is sleeved with a rotating plate (72) located inside the storage chamber (64). The outer wall of the rotating plate (72) is installed with a plurality of annularly distributed material throwing racks (73), and one end of the material throwing rack (73) away from the rotating plate (72) is bent toward a side away from its movement direction.

10. A boiler wastewater recycling method, comprising a boiler wastewater recycling device as claimed in any one of claims 1 to 9, characterized in that: The treatment method includes the following steps: S1: Sewage discharge: First, the sewage discharged from the boiler enters the treatment cylinder (1) through the liquid inlet cylinder (2); S2: Adding flocculant and mixing: Next, the flocculant is discharged into the treatment cylinder (1), and then the sewage and the flocculant are fully stirred and mixed by the stirring and settling unit (5), so that the particles, suspended matter and other impurities in the sewage are flocculated and precipitated; S3: Filtration of the mixed liquid: filtering the flocculated sewage through the filtration unit (6) to remove the flocculants and residual fine particles in the sewage; S4: Clear liquid discharge: The treated water is discharged along the treatment tube (1) and then collected in a container for recycling.

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