Cooling water environmental protection treatment device and treatment system for circulating water of cold rolling mill

Abstract

The present invention discloses a cooling water environmental protection treatment device and a treatment system for circulating water of a cold rolling mill, and relates to the field of wastewater treatment equipment. The present invention divides the interior of a tank body into an upper mixing chamber and a lower flocculation chamber by a partition. When flocculating the cooling water, the cooling water and the flocculant can be evenly mixed and stirred in the mixing chamber by a stirring and mixing component, and then the cooling water mixed with the flocculant is transported to the flocculation chamber for flocculation and precipitation, so that there is no need to stir and mix directly in the flocculation chamber, so that the cooling water in the flocculation chamber is always in a static precipitation state, which can improve the flocculation and precipitation effect of the flocculation particles in the flocculation chamber, thereby improving the cooling water treatment efficiency; a flocculant interception component is arranged below the grease filter component and the water outlet, and the flocculants in a suspended state in the cooling water can be filtered and intercepted by the flocculant interception component to prevent the flocculants from floating upward and accumulating on the surface of the grease filter component.

Description

Technical Field

[0001] The present invention belongs to the field of wastewater treatment equipment, and in particular, relates to a cooling water environmental protection treatment device and a treatment system for circulating water of a cold rolling mill. Background Art

[0002] When the cold rolling mill is working, it is necessary to spray cool the rolls, cold-rolled workpieces, etc. Since the cooling water is in direct contact with the rolls and cold-rolled workpieces, there are metal debris, grease and other debris particles in the recovered cooling water. At this stage, most of them use sedimentation tanks, cyclone wells, etc. to remove metal debris, grease and other particulate matter. There are also automatic backwashing filter screens, magnetic filters, etc., which are used to improve the purification of the cooling water of the cold rolling mill.

[0003] Chinese patent CN113860571B discloses a cooling water treatment device for an aluminum processing cold rolling mill, comprising a tank body and an upper cover, wherein the tank body and the upper cover are fixed by a flange and a bolt and nut group, a liquid inlet pipe is provided at the center of the upper end of the upper cover, and a stop valve is provided on the liquid inlet pipe; a filter screen and a partition are provided at the upper part of the inner cavity of the tank body, and the partition is located directly below the filter screen; a pipeline 1 is provided on the outside of the tank body, and the upper end of the pipeline 1 is located in the tank body and between the filter screen and the partition; a stop valve and a booster pump are provided on the pipeline 1, and a horizontal section at the lower end of the pipeline 1 is located at the lower part of the inner cavity of the tank body, and the horizontal section is connected to a plurality of releasers; a drain pipe is connected to the outside of the tank body, and a filtering structure is provided in the inner cavity of the tank body corresponding to the drain pipe.

[0004] In the above patent, the flocculant and cooling water are mixed in the sedimentation chamber of the tank body, and the flocculant and cooling water are stirred and mixed by a releaser, an aeration mechanism, etc. Therefore, each time the flocculant and cooling water are mixed, the cooling water in the sedimentation chamber will be stirred and disturbed, which will affect the flocculation and sedimentation effect of the impurity particles in the sedimentation chamber, and further affect the cooling water treatment efficiency; at the same time, in the above patent, grease is filtered through an overflow tank and an oil-water separation filter element, but during the aeration and stirring mixing process of the cooling water and the flocculant, the flocculated suspended matter in the cooling water can easily float and settle in the overflow tank under the action of air flotation and water flow stirring, thereby clogging the oil-water separation filter element, affecting the oil-water separation filtration and drainage process of the cooling water. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a cooling water environmental protection treatment device and a treatment system for circulating water of a cold rolling mill to overcome the above-mentioned technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a cooling water environmental protection treatment device, comprising a tank body, a support is installed at the bottom end of the tank body, a partition is fixedly installed inside the tank body, so that the inside of the tank body is divided into an upper mixing chamber and a lower flocculation chamber by the partition, a cooling water inlet and a flocculant inlet connected to the mixing chamber are arranged at the upper end of the tank body, and a stirring and mixing component is also installed inside the mixing chamber;

[0008] The lower end of the mixing chamber is connected to the lower end of the flocculation chamber through a conduit, a water outlet connected to the upper end of the flocculation chamber is provided on the side wall of the tank body, a grease filter assembly is installed inside the water outlet, and a flocculant interception assembly located between the outlet at the bottom end of the conduit and the water outlet is installed inside the flocculation chamber;

[0009] A cleaning mechanism is installed at the bottom end of the floc interception component, and the cleaning mechanism includes a scraper bar which is rotatably installed and tightly attached to the floc interception component, and the scraper bar is transmission-connected to the stirring and mixing component so that when the stirring and mixing component rotates and stirs, the scraper bar can be driven to rotate and move on the bottom surface of the floc interception component, so as to scrape and clean the flocs intercepted and attached to the bottom surface of the floc interception component.

[0010] Furthermore, a sewage outlet communicating with the bottom of the flocculation chamber is provided at the bottom of the tank body, a sludge pump is connected to the outlet end of the sewage outlet, and a valve is installed on the conduit.

[0011] Furthermore, the stirring and mixing assembly includes a motor and a stirring shaft, wherein the motor is fixedly mounted on the top of the tank body, the stirring shaft is rotatably mounted inside the mixing chamber, and a plurality of stirring blades are fixedly mounted on the stirring shaft.

[0012] Furthermore, the flocculant interception assembly comprises a frame, the frame is fixedly mounted on the inner wall of the tank body, and an interception filter and a bracket located on the top surface of the interception filter are fixedly mounted on the inner circle of the frame.

[0013] Furthermore, the grease filter assembly includes an overflow groove, which is arranged on the inner wall of the tank body and surrounds the inlet end of the water outlet. The interior of the overflow groove is filled with an oil-water separation filter element.

[0014] Furthermore, the cleaning mechanism also includes a collecting box, which is rotatably mounted on the bottom surface of the intercepting filter, and the top of the collecting box is provided with an opening facing the bottom surface of the intercepting filter, and the scraper bar is fixedly mounted on one side of the top opening of the collecting box so that the collecting box can collect the flocs scraped off by the scraper bar.

[0015] Furthermore, a reciprocating screw is rotatably installed inside the collection box, one end of the reciprocating screw extends to the outside of the collection box and is fixedly installed with a gear, and a gear ring meshing and transmission connected with the gear is fixedly installed on the inner wall of the tank body;

[0016] A material drop opening is provided at the bottom of the collecting box near the inner wall of the tank body, a screw pair is threadedly installed on the reciprocating screw, and a foldable push plate group is installed on the outer ring of the screw pair.

[0017] Further, the foldable push plate group includes a plurality of No. 1 hinge shafts, a plurality of folding plates and a plurality of No. 2 hinge shafts, the plurality of folding plates are sequentially distributed on the outer ring of the screw pair to form a planar push plate structure on the outer ring of the screw pair, and adjacent folding plates are rotatably connected by the No. 1 hinge shafts and the No. 2 hinge shafts that are sequentially staggered and distributed, the inner side end of the No. 1 hinge shaft is rotatably connected to the outer ring of the screw pair, and a connecting rod is rotatably installed on the No. 2 hinge shaft;

[0018] The outer ring of the screw pair is provided with a slide groove, a friction block is slidably installed on the slide groove, one end of each of the connecting rods is rotatably connected to the surface of the friction block, and the bottom surface of the collection box is provided with a friction strip that is in sliding contact with the bottom surface of the friction block.

[0019] Furthermore, the agitator shaft and the collecting box are connected via a reduction transmission assembly, the reduction transmission assembly comprising a transmission box, the transmission box is fixedly mounted inside the tank body, the bottom end of the agitator shaft extends to the inside of the transmission box and is fixedly mounted with a primary transmission gear, the transmission box also rotatably mounts an output shaft coaxially arranged with the agitator shaft and an intermediate shaft located on one side of the output shaft, the top end of the intermediate shaft is fixedly mounted with a primary driven gear meshing with the primary transmission gear, the bottom end of the intermediate shaft is fixedly mounted with a secondary transmission gear, the top end of the output shaft is fixedly mounted with a secondary driven gear meshing with the secondary transmission gear, the bottom end of the output shaft extends to the bottom surface of the intercepting filter and is fixedly connected to the inner end of the collecting box.

[0020] Furthermore, the present invention also discloses a treatment system for circulating water of a cold rolling mill, comprising the above-mentioned cooling water environmental protection treatment device.

[0021] The present invention has the following beneficial effects:

[0022] 1. In the present invention, the interior of the tank body is divided into an upper mixing chamber and a lower flocculation chamber by a partition. When the cooling water is flocculated, the cooling water and the flocculant can be first mixed and stirred evenly in the mixing chamber by a stirring and mixing component, and then the cooling water mixed with the flocculant is transported to the flocculation chamber for flocculation and precipitation, so that there is no need to stir and mix directly in the flocculation chamber, so that the cooling water in the flocculation chamber is always in a static precipitation state, which can improve the flocculation and precipitation effect of the flocculation particles in the flocculation chamber, thereby improving the cooling water treatment efficiency.

[0023] 2. In the present invention, a flocculant intercepting component is arranged below the grease filter component and the water outlet, which can filter and intercept the flocculants in suspension in the cooling water to prevent the flocculants from floating upward and accumulating on the surface of the grease filter component, thereby blocking the grease filter component and the water outlet, thereby ensuring the normal oil-water separation, filtration and drainage process of the cooling water.

[0024] 3. In the present invention, a scraper bar is arranged on the bottom surface of the floc interception component, and the scraper bar is connected to the stirring and mixing component in a transmission manner, so that when the stirring and mixing component rotates and stirs, the scraper bar can be driven to rotate and move on the bottom surface of the floc interception component, and the floc intercepted and attached to the bottom surface of the floc interception component can be scraped and cleaned, so as to prevent the floc from continuously accumulating and clogging the floc interception component and affecting the normal flow of cooling water; and the bottom surface of the floc interception component is also provided with a collection box that rotates synchronously with the scraper bar, and the floc scraped off by the scraper bar can be collected through the collection box The flocculation box is used to collect the flocculations to prevent them from continuing to float disorderly and suspend in the cooling water. At the same time, a drop port is provided at the bottom of the collecting box near the inner wall of the tank body, and a foldable pushing plate group that can move back and forth is installed inside the collecting box. When the foldable pushing plate group moves toward the inner wall of the tank body, the flocculations collected in the collecting box can be pushed toward the drop port until the flocculations fall from the drop port and slowly settle down along the inner wall of the tank body, thereby cleaning the flocculations in the collecting box to prevent them from continuing to accumulate in the collecting box.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying creative work.

[0027] Figure 1 This is one of the three-dimensional structural schematic diagrams of the cooling water environmental protection treatment device of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection structure between the stirring and mixing component and the reduction transmission component of the present invention;

[0029] Figure 3 This is the second schematic diagram of the three-dimensional structure of the cooling water environmental protection treatment device of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the bottom surface of the flocculant interception component of the present invention;

[0031] Figure 5It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention;

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the foldable push plate assembly of the present invention;

[0033] Figure 7 This is the third schematic diagram of the three-dimensional structure of the cooling water environmental protection treatment device of the present invention.

[0034] In the figure: 1. tank body; 11. partition; 12. mixing chamber; 13. flocculation chamber; 14. cooling water inlet; 15. flocculant inlet; 16. water outlet; 17. sewage outlet; 18. conduit; 19. valve; 2. support; 3. stirring and mixing assembly; 31. motor; 32. stirring shaft; 33. stirring blade; 4. flocculant interception assembly; 41. frame; 42. bracket; 43. interception filter; 5. reduction transmission assembly; 51. transmission box; 52. primary transmission gear; 53. primary driven gear ; 54. Intermediate shaft; 55. Secondary driven gear; 56. Secondary transmission gear; 57. Output shaft; 6. Grease filter assembly; 61. Overflow tank; 62. Oil-water separation filter element; 7. Cleaning mechanism; 71. Collecting box; 72. Gear; 73. Gear ring; 74. Scraper strip; 75. Reciprocating screw; 76. Dropping port; 77. No. 1 hinge shaft; 78. Folding plate; 79. No. 2 hinge shaft; 710. Screw pair; 711. Connecting rod; 712. Friction block; 713. Slide groove; 714. Friction strip. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0036] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0037] Embodiment 1

[0038] See also Figure 1-Figure 7As shown, the present invention is a cooling water environmental protection treatment device, comprising a tank body 1, a support 2 is installed at the bottom end of the tank body 1, a partition 11 is fixedly installed inside the tank body 1, so that the inside of the tank body 1 is divided into an upper mixing chamber 12 and a lower flocculation chamber 13 through the partition 11, and a cooling water inlet 14 and a flocculant inlet 15 connected to the mixing chamber 12 are arranged at the upper end of the tank body 1, and a stirring and mixing component 3 is also installed inside the mixing chamber 12; the lower end of the mixing chamber 12 is connected to the lower end of the flocculation chamber 13 through a conduit 18, and a side wall of the tank body 1 is provided with a cooling water inlet 14 and a flocculant inlet 15 connected to the mixing chamber 12. The water outlet 16 is provided with a grease filter assembly 6 installed inside the water outlet 16, and the flocculation chamber 13 is provided with a flocculant interception assembly 4 located between the bottom outlet of the conduit 18 and the water outlet 16; the bottom end of the flocculant interception assembly 4 is provided with a cleaning mechanism 7, and the cleaning mechanism 7 includes a scraper bar 74 which is rotatably installed and closely attached to the flocculant interception assembly 4, and the scraper bar 74 is transmission-connected with the stirring and mixing assembly 3, so that when the stirring and mixing assembly 3 rotates and stirs, the scraper bar 74 can be driven to rotate and move on the bottom surface of the flocculant interception assembly 4, so as to scrape and clean the flocculants intercepted and attached to the bottom surface of the flocculant interception assembly 4;

[0039] The cooling water environmental protection treatment device delivers the cooling water used in the operation of the cold rolling mill to the mixing chamber 12 through the cooling water inlet 14, and at the same time delivers the flocculant to the mixing chamber 12 through the flocculant inlet 15, and then stirs and mixes the cooling water and the flocculant evenly through the stirring and mixing component 3, and then delivers the cooling water mixed with the flocculant to the flocculation chamber 13 through the conduit 18. At this time, the metal particles and suspended matter in the cooling water gradually flocculate into large agglomerated particles under the action of the flocculant, and gradually settle downward by standing. Among them, the flocculant interception component 4 can intercept and filter the flocculated particles suspended in the cooling water to prevent flocculation. The flocculated particles are suspended upward and attached to the grease filter component 6, and the intercepted flocculated particles continue to flocculate and aggregate on the bottom surface of the flocculation interception component 4. Some flocculated particles can separate from the flocculation interception component 4 and automatically sink under the action of gravity after agglomerating to a certain volume, and some flocculated particles will continue to adhere to the bottom surface of the flocculation interception component 4. When the stirring and mixing component 3 rotates and stirs, it can drive the scraper 74 to rotate and move on the bottom surface of the flocculation interception component 4, scraping and cleaning the flocculated particles intercepted and attached to the bottom surface of the flocculation interception component 4, so as to prevent the flocculated particles from continuously accumulating and clogging the flocculation interception component 4 and affecting the normal flow of cooling water.

[0040] In this embodiment, the interior of the tank body 1 is divided into an upper mixing chamber 12 and a lower flocculation chamber 13 by a partition 11, so that the cooling water and the flocculant can be first mixed and stirred evenly in the mixing chamber 12, and then the cooling water mixed with the flocculant is transported to the flocculation chamber 13 for flocculation and precipitation, so that there is no need to directly stir and mix in the flocculation chamber 13, so that the cooling water in the flocculation chamber 13 is always in a static sedimentation state, which can improve the flocculation and precipitation effect of the flocculation particles in the flocculation chamber 13, thereby improving the cooling water treatment efficiency; a flocculant interception component 4 is arranged below the grease filter component 6 and the water outlet 16, and the flocculant interception component 4 can filter and intercept the flocculants in a suspended state in the cooling water, prevent the flocculants from floating upward and accumulating on the surface of the grease filter component 6, and block the grease filter component 6 and the water outlet 16, so as to ensure that the oil-water separation, filtration and drainage process of the cooling water proceed normally.

[0041] Embodiment 2

[0042] See also Figure 1-Figure 3 As shown, the difference between this embodiment and the above embodiment is that a sewage outlet 17 connected to the bottom of the flocculation chamber 13 is provided at the bottom end of the tank body 1, a sludge pump is connected to the outlet end of the sewage outlet 17, and a valve 19 is installed on the conduit 18; the stirring and mixing assembly 3 includes a motor 31 and a stirring shaft 32, the motor 31 is fixedly installed on the top of the tank body 1, the stirring shaft 32 is rotatably installed inside the mixing chamber 12, and a plurality of stirring blades 33 are fixedly installed on the stirring shaft 32; the flocculant interception assembly 4 includes a frame 41, the frame 41 is fixedly installed on the inner wall of the tank body 1, and an interception filter 43 and a bracket 42 located on the top surface of the interception filter 43 are fixedly installed on the inner circle of the frame 41; the grease filter assembly 6 includes an overflow groove 61, the overflow groove 61 is arranged on the inner wall of the tank body 1, and surrounds the inlet end of the water outlet 16, and the interior of the overflow groove 61 is filled with an oil-water separation filter element 62;

[0043] Among them, when the stirring and mixing component 3 is working, the motor 31 drives the stirring shaft 32 and the stirring blade 33 to rotate, so that the stirring blade 33 stirs and mixes the cooling water and flocculant in the mixing chamber 12, and then opens the valve 19, and the mixed and stirred cooling water is transported to the flocculation chamber 13 through the conduit 18 for flocculation and sedimentation. At the same time, the water level in the flocculation chamber 13 rises, so that the cooling water at the upper end of the flocculation chamber 13 enters the overflow tank 61, and is filtered and separated from the oil and water separation filter element 62 and discharged from the water outlet 16. The interception filter 43 filters and intercepts the suspended flocculants in the cooling water to prevent the flocculants from floating into the overflow tank 61, and the oil-water separation filter element 62 and the water outlet 16 are blocked. The flocculants are statically settled at the bottom of the flocculation chamber 13 and discharged outward through the sewage outlet 17 and the sludge pump.

[0044] Embodiment 3

[0045] See also Figure 1-Figure 6 As shown, the difference between this embodiment and the above embodiment is that the cleaning mechanism 7 also includes a collecting box 71, which is rotatably mounted on the bottom surface of the intercepting filter screen 43, and the top of the collecting box 71 is provided with an opening facing the bottom surface of the intercepting filter screen 43, and the scraper bar 74 is fixedly mounted on one side of the top opening of the collecting box 71, so that the collecting box 71 can collect the flocculants scraped by the scraper bar 74; a reciprocating screw 75 is rotatably mounted inside the collecting box 71, one end of the reciprocating screw 75 extends to the outside of the collecting box 71, and is fixedly mounted with a gear 72, and a gear ring 73 meshing and drivingly connected with the gear 72 is fixedly mounted on the inner wall of the tank body 1; a drop opening 76 is provided at the bottom of the collecting box 71 near the inner wall of the tank body 1, and a screw pair 710 is threadedly mounted on the reciprocating screw 75, and the outer ring of the screw pair 710 is mounted with A foldable push plate group; the foldable push plate group includes a plurality of No. 1 hinge shafts 77, a plurality of folding plates 78 and a plurality of No. 2 hinge shafts 79, the plurality of folding plates 78 are sequentially distributed on the outer ring of the screw pair 710 to form a planar push plate structure on the outer ring of the screw pair 710, and adjacent folding plates 78 are rotatably connected through the No. 1 hinge shafts 77 and the No. 2 hinge shafts 79 that are sequentially staggered and distributed, the inner side end of the No. 1 hinge shaft 77 is rotatably connected to the outer ring of the screw pair 710, and a connecting rod 711 is rotatably installed on the No. 2 hinge shaft 79; a slide groove 713 is provided on the outer ring of the screw pair 710, and a friction block 712 is slidably installed on the slide groove 713, one end of each of the plurality of connecting rods 711 is rotatably connected to the surface of the friction block 712, and a friction strip 714 that is in sliding contact with the bottom surface of the friction block 712 is provided on the bottom surface of the collection box 71;

[0046] Furthermore, the stirring shaft 32 and the collecting box 71 are connected through a reduction transmission assembly 5, and the reduction transmission assembly 5 includes a transmission box 51, which is fixedly installed inside the tank body 1, and the bottom end of the stirring shaft 32 extends to the inside of the transmission box 51 and is fixedly installed with a primary transmission gear 52, and the inside of the transmission box 51 is also rotatably installed with an output shaft 57 coaxially arranged with the stirring shaft 32 and an intermediate shaft 54 ​​located on one side of the output shaft 57, the top end of the intermediate shaft 54 ​​is fixedly installed with a primary driven gear 53 meshing with the primary transmission gear 52, the bottom end of the intermediate shaft 54 ​​is fixedly installed with a secondary transmission gear 56, the top end of the output shaft 57 is fixedly installed with a secondary driven gear 55 meshing with the secondary transmission gear 56, and the bottom end of the output shaft 57 extends to the bottom surface of the intercepting filter 43 and is fixedly connected to the inner end of the collecting box 71.

[0047] Among them, the first-stage transmission gear 52 and the first-stage driven gear 53, as well as the second-stage transmission gear 56 and the second-stage driven gear 55 are all reduced-speed transmissions. When the stirring shaft 32 rotates, the output shaft 57 is driven to rotate slowly after being reduced in speed by the second-stage transmission, and then the collecting box 71 and the scraping bar 74 are driven to rotate on the bottom surface of the intercepting filter 43 through the output shaft 57, so that the scraping bar 74 scrapes and cleans the floccules attached to the bottom surface of the intercepting filter 43, and the cleaned floccules are collected by the collecting box 71 to prevent the floccules from continuing to float and move in the cooling water;

[0048] When the collecting box 71 rotates, it drives the gear 72 at its outer end to make a circular motion along the ring gear 73 on the inner wall of the tank body 1, so that the gear 72 starts to rotate under the meshing drive of the ring gear 73, thereby driving the reciprocating screw rod 75 to rotate through the gear 72, and when the reciprocating screw rod 75 rotates, the screw rod pair 710 is driven to reciprocate in the collecting box 71 through the threaded transmission, so as to drive the foldable pushing plate group to reciprocate in the collecting box 71, and when the foldable pushing plate group moves toward the blanking port 76, the friction block 712 first moves to the left along the slide groove 713 under the friction resistance of the friction strip 714, so that the friction block 712 The multiple folding plates 78 are gradually pushed and unfolded by the connecting rod 711 until the friction block 712 abuts against the left end of the slide groove 713. At this time, the multiple folding plates 78 are fully unfolded to form a planar push plate structure, and the planar push plate structure continues to move toward the drop opening 76 along with the screw pair 710, so that the planar push plate structure gradually pushes and transfers the flocculants in the collection box 71 toward the drop opening 76, and the flocculants can be adsorbed and agglomerated with each other during the pushing process to increase the volume of the flocculants. When the planar push plate structure moves to the drop opening 76, the flocculants fall from the drop opening 76 and gradually settle downward along the inner wall of the tank body 1.

[0049] When the locking cam 73 is in the closed position, the locking cam 730 is in the closed position, and the locking cam 730 is in the closed position, so that the locking cam 730 can be turned to the left by turning the locking cam 731. When the locking cam 731 is in the closed position, the locking cam 730 is turned to the right by turning the locking cam 731.

[0050] The flocs scraped off by the scraper 74 are collected by the collecting box 71 to prevent the flocs from continuing to float disorderly and suspend in the cooling water. At the same time, a drop port 76 is provided at the bottom of the collecting box 71 near the inner wall of the tank body 1, and a foldable pushing plate group that can move back and forth is installed inside the collecting box 71. When the foldable pushing plate group moves toward the inner wall of the tank body 1, the flocs collected in the collecting box 71 can be pushed and moved toward the drop port 76 until the flocs fall from the drop port 76 and slowly settle downward along the inner wall of the tank body 1, so that the flocs in the collecting box 71 can be cleaned to prevent the flocs from continuing to accumulate in the collecting box 71.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that those skilled in the art can understand and use the invention well.

Claims

1. A cooling water environmental protection treatment device, comprising a tank body, characterized in that: A support is installed at the bottom end of the tank body, and a partition is fixedly installed inside the tank body to separate the inside of the tank body into an upper mixing chamber and a lower flocculation chamber through the partition. A cooling water inlet and a flocculant inlet connected to the mixing chamber are arranged at the upper end of the tank body, and a stirring and mixing component is also installed inside the mixing chamber; The lower end of the mixing chamber is connected to the lower end of the flocculation chamber through a conduit, a water outlet connected to the upper end of the flocculation chamber is provided on the side wall of the tank body, a grease filter assembly is installed inside the water outlet, and a flocculant interception assembly located between the outlet at the bottom end of the conduit and the water outlet is installed inside the flocculation chamber; A cleaning mechanism is installed at the bottom end of the floc interception component, and the cleaning mechanism includes a scraper bar that is rotatably installed and closely attached to the floc interception component, and the scraper bar is transmission-connected with the stirring and mixing component, so that when the stirring and mixing component rotates and stirs, the scraper bar can be driven to rotate and move on the bottom surface of the floc interception component, and the floc intercepted and attached to the bottom surface of the floc interception component can be scraped and cleaned; The stirring and mixing assembly includes a motor and a stirring shaft, and the flocculant intercepting assembly includes a frame, which is fixedly mounted on the inner wall of the tank body, and an intercepting filter and a bracket located on the top surface of the intercepting filter are fixedly mounted on the inner circle of the frame; The cleaning mechanism also includes a collecting box, which is rotatably mounted on the bottom surface of the intercepting filter screen, and the top of the collecting box is provided with an opening facing the bottom surface of the intercepting filter screen, and the scraping bar is fixedly mounted on one side of the top opening of the collecting box, so that the collecting box can collect the flocculants scraped by the scraping bar; A material drop opening is provided at the bottom of the collecting box near the inner wall of the tank body, and the stirring shaft and the collecting box are connected by a reduction transmission assembly; a reciprocating screw is rotatably installed inside the collecting box, one end of the reciprocating screw extends to the outside of the collecting box and is fixedly installed with a gear, and a gear ring meshing and connected with the gear is fixedly installed on the inner wall of the tank body; a screw pair is threadedly installed on the reciprocating screw, and a foldable push plate group is installed on the outer ring of the screw pair; The foldable push plate group includes a plurality of No. 1 hinge shafts, a plurality of folding plates and a plurality of No. 2 hinge shafts, wherein the plurality of folding plates are sequentially distributed on the outer ring of the screw pair to form a planar push plate structure on the outer ring of the screw pair, and adjacent folding plates are rotatably connected by the No. 1 hinge shafts and the No. 2 hinge shafts that are sequentially staggered and distributed, the inner side end of the No. 1 hinge shaft is rotatably connected to the outer ring of the screw pair, and a connecting rod is rotatably installed on the No. 2 hinge shaft; The outer ring of the screw pair is provided with a slide groove, a friction block is slidably installed on the slide groove, one end of each of the connecting rods is rotatably connected to the surface of the friction block, and the bottom surface of the collection box is provided with a friction strip that is in sliding contact with the bottom surface of the friction block.

2. The cooling water environmental protection treatment device according to claim 1 is characterized in that: The bottom end of the tank body is provided with a sewage outlet communicated with the bottom of the flocculation chamber, the outlet end of the sewage outlet is connected with a sludge pump, and a valve is installed on the conduit.

3. The cooling water environmental protection treatment device according to claim 1 is characterized in that: The motor is fixedly mounted on the top of the tank body, the stirring shaft is rotatably mounted inside the mixing chamber, and a plurality of stirring blades are fixedly mounted on the stirring shaft.

4. The cooling water environmental protection treatment device according to claim 1 is characterized in that: The grease filter assembly comprises an overflow groove, which is arranged on the inner wall of the tank body and surrounds the inlet end of the water outlet. The interior of the overflow groove is filled with an oil-water separation filter element.

5. The cooling water environmental protection treatment device according to claim 1 is characterized in that: The reduction transmission assembly includes a transmission box, which is fixedly installed inside the tank body, the bottom end of the stirring shaft extends to the inside of the transmission box and is fixedly installed with a primary transmission gear, the inside of the transmission box also rotatably installs an output shaft coaxially arranged with the stirring shaft and an intermediate shaft located on one side of the output shaft, the top end of the intermediate shaft is fixedly installed with a primary driven gear meshing and transmission connected with the primary transmission gear, the bottom end of the intermediate shaft is fixedly installed with a secondary transmission gear, the top end of the output shaft is fixedly installed with a secondary driven gear meshing and transmission connected with the secondary transmission gear, the bottom end of the output shaft extends to the bottom surface of the intercepting filter and is fixedly connected to the inner end of the collecting box.

6. A treatment system for circulating water of a cold rolling mill, characterized in that: It comprises the cooling water environmental protection treatment device as described in any one of claims 1-5.

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