A rotary heavy metal sewage treatment equipment

Abstract

The invention relates to the technical field of heavy metal wastewater treatment, and specifically discloses a rotary heavy metal wastewater treatment device, comprising a wastewater container tank and a cylindrical treatment pool, wherein a column is fixedly arranged through the center of the treatment pool, a hollow shaft sealed and connected to the bottom wall of the treatment pool is rotatably arranged on the periphery of the column, an outer ring cylinder is fitted on the inner wall of the treatment pool, and the outer ring cylinder and the hollow shaft are divided into a plurality of fan-shaped wastewater treatment areas by a plurality of circumferentially uniform radial partitions, and the whole treatment pool is divided into a feeding section, a stirring reaction section, a sedimentation section, a drainage section and a slag discharge section in the circumferential direction in a counterclockwise direction with the fan-shaped wastewater treatment area corresponding to a reagent dosing device as a starting point; the rotary heavy metal wastewater treatment device disclosed by the invention realizes batch continuous treatment of heavy metal wastewater, and greatly improves the treatment effect of heavy metal wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of heavy metal wastewater treatment, and specifically discloses a rotary heavy metal wastewater treatment device. Background Art

[0002] The process of precious metal recovery mainly adopts melting method and chemical agent extraction method. Among them, chemical agent extraction method will produce a lot of heavy metal wastewater after recovering precious metals. These heavy metal wastewater need to be treated to meet the standards before they can be discharged. The existing treatment of heavy metal wastewater usually adopts sedimentation method, that is, the wastewater is first added to the sedimentation tank, and then an appropriate amount of flocculant or precipitant is added, stirred to produce precipitation, and then the solid-liquid separation is carried out by filtering device. The clear liquid after separation can be discharged only after it meets the standards after testing.

[0003] For example, the utility model patent with application number 2021215316727 discloses a heavy metal wastewater purification device, including a purification box, a feeding device and a stirring device. The feeding device includes a support frame, the top of the support frame is fixedly connected to a feeding barrel, the left side of the feeding barrel is fixedly connected to a telescopic push rod, the output end of the telescopic push rod is fixedly connected to a positioning push plate, the top of the feeding barrel is fixedly connected to a feeding assembly, the bottom of the feeding barrel is fixedly connected to a discharging assembly, and the stirring device includes a fixed plate, the top of the fixed plate is fixedly connected to a connecting frame, the inner top wall of the connecting frame is fixedly connected to a driving assembly, and the inner top wall of the connecting frame is fixedly connected to two groups of driven assemblies. During operation, the heavy metal wastewater purification device disclosed in the patent can add sewage and corresponding reagents into the purification box for stirring, so that the heavy metal ions in the sewage are precipitated, and then the precipitate and the treated sewage are discharged from different outlets after being intercepted by a filtering device. However, after the sewage is stirred by adding the reagent, it takes a certain amount of time to precipitate. Only after precipitation can the heavy metal ions be better separated from the treated wastewater. The heavy metal wastewater purification device cannot continue to carry out subsequent sewage treatment during the precipitation process, resulting in limited efficiency of sewage treatment. In addition, in the process of the filtration device to achieve solid-liquid separation, its filter layer is easily blocked by sediments, and it is necessary to manually clean the inside regularly, which not only increases the labor intensity of the operators, but also reduces the treatment efficiency of the entire device for heavy metal wastewater. In view of the above-mentioned shortcomings of the existing heavy metal wastewater purification device, the present invention proposes a rotary heavy metal wastewater treatment equipment, which can continuously treat the heavy metal wastewater in batches, and enable the sewage and the reagent to be stirred and the precipitation process to be carried out simultaneously, thereby improving the treatment efficiency of the heavy metal wastewater. Summary of the invention

[0004] The purpose of the present invention is to provide a rotary heavy metal sewage treatment equipment to achieve batch continuous treatment of heavy metal sewage, thereby improving the heavy metal sewage treatment efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] A rotary heavy metal sewage treatment equipment comprises a sewage container tank and a cylindrical treatment pool, wherein the sewage container tank is provided with a feeding assembly for feeding materials into the treatment pool, and the outside of the treatment pool is provided with a reagent dosing device for feeding materials into the same position of the feeding assembly, a column is fixedly provided through the center of the treatment pool, a hollow rotating shaft sealed and connected to the bottom wall of the treatment pool is rotatably provided on the periphery of the column, an outer ring cylinder is fitted on the inner wall of the treatment pool, and the outer ring cylinder and the hollow rotating shaft are divided into a plurality of fan-shaped sewage treatment areas by a plurality of circumferentially uniform radial partitions, and the whole treatment pool is divided into a feeding section, a stirring reaction section, a sedimentation section, a drainage section and a slag discharge section in the circumferential direction in a counterclockwise direction with the fan-shaped sewage treatment area corresponding to the reagent dosing device as the starting point;

[0007] The top end of the column extending out of the hollow shaft is fixedly connected to a round wheel, the outer circumferential surface of the round wheel is provided with tooth surfaces corresponding to the feeding section and the stirring reaction section, the top of the hollow shaft is connected to a ring plate, and stirring shafts corresponding to each sector-shaped sewage treatment area are evenly arranged on the ring plate in the circumferential direction, the lower end of the stirring shaft is provided with a stirring assembly located in the sector-shaped sewage treatment area, and the upper end of the stirring shaft is provided with a pinion meshing with the tooth surface on the round wheel;

[0008] A vertical stripe is provided on the outer circumferential surface of the outer ring cylinder and is aligned with each fan-shaped sewage treatment area. A filter is installed on the outer ring cylinder inside the vertical stripe. An oblique stripe is provided on the outer circumferential surface of the treatment tank corresponding to the drainage section. A liquid collecting trough is provided on the outer surface of the treatment tank below the oblique stripe, and a liquid drainage pipe is connected to the liquid collecting trough. A slag discharge port is provided on the bottom wall of the treatment tank corresponding to the slag discharge section, and a filter reflux component is connected to the lower end of the slag discharge port.

[0009] When the rotary heavy metal sewage treatment equipment disclosed in the present invention treats heavy metal sewage, the sewage stored in the sewage container tank is added to the fan-shaped sewage treatment area of ​​the feeding section by the feeding component, and at the same time, the flocculant or other chemicals are quantitatively added to the fan-shaped sewage treatment area by the chemical dosing device to make it quickly mixed with the sewage.

[0010] During the feeding process, the entire fan-shaped sewage treatment area rotates at a low speed along with the hollow shaft. During the rotation, the small gear above the stirring shaft will mesh with the tooth surface on the outer surface of the circular wheel, thereby driving the stirring shaft to rotate. The mixing speed of the sewage and the reagent is accelerated under the action of the stirring component, causing the heavy metal ions in the sewage to flocculate and crystallize.

[0011] Subsequently, the fan-shaped sewage treatment area rotates counterclockwise and passes through the stirring reaction section, sedimentation section, drainage section and slag discharge section. During the stirring reaction section, the small gear is meshed with the tooth surface on the outer circumference of the circular wheel, so that the sewage and the reagent are stirred and mixed throughout the process, and the heavy metal ions in the sewage are rapidly flocculated and crystallized. When entering the sedimentation section, the small gear does not mesh with the tooth surface on the outer circumference of the circular wheel, and the entire fan-shaped sewage treatment area rotates at a low speed, so that the sewage inside the entire fan-shaped sewage treatment area is close to a static state, thereby accelerating the flocculation and crystallization. Metal precipitation is achieved, thereby separating the supernatant liquid from the lower turbidity; when entering the drainage section, the filter element on the fan-shaped sewage treatment area is aligned with the oblique line, and the supernatant liquid inside is filtered and retained by the filter element, and the filtered liquid flows into the liquid receiving tank for discharge until the internal supernatant liquid is completely discharged; when entering the slag discharge section, the residual turbid liquid and precipitate at the bottom of the fan-shaped sewage treatment area directly fall into the filter reflux component, and the precipitate is discharged after filtration, and the filtered filtrate is returned to the sewage container tank for the next sewage treatment.

[0012] As a further configuration of the above scheme, a sealed bearing for penetrating the column is provided at the center of the bottom wall of the treatment pool, the lower end of the hollow shaft is connected to the sealed bearing, and a power assembly is connected to the hollow shaft below the sealed bearing. Through the design of the sealed bearing and the power assembly, the hollow shaft can be driven to rotate at a low speed in the treatment pool, and sewage leakage can be prevented.

[0013] As a further configuration of the above scheme, one end of the oblique opening close to the sedimentation section is flush with the upper end of the filter element, and the other end of the oblique opening is flush with the lower end of the filter element. The specific design of the above oblique opening enables the clear liquid to be discharged gradually from top to bottom when the treated clear liquid in the fan-shaped sewage treatment area is discharged, avoiding the flow of turbid liquid at the bottom.

[0014] As a further configuration of the above scheme, the filter reflux component includes a filter box connected to the lower end of the slag discharge port, an inclined filter layer is installed in the filter box, the inclined lower end of the filter layer is connected to a vertical downward slag discharge channel, the lower surface of the filter box is connected to a first liquid return pipe, the end of the first liquid return pipe is connected to a liquid return pump, and the discharge end of the liquid return pump is connected to a second liquid return pipe connected to the sewage container tank. The design of the filter reflux component can achieve solid-liquid separation of turbid liquid and precipitated slag, and can also discharge the precipitated slag at a fixed point, and the filtered filtrate can be sent back to the sewage container tank at a fixed point for secondary treatment.

[0015] As a further configuration of the above solution, the outer end of the ring plate is provided with a bearing aligned with each sector-shaped sewage treatment area, and the stirring shaft is connected to the bearing.

[0016] As a further configuration of the above solution, the feeding assembly includes an infusion pump connected to the sewage container tank, and the discharge end of the infusion pump is connected to an infusion tube arranged toward the feeding section.

[0017] As a further configuration of the above scheme, the drug dosing device includes an auger conveyor fixedly connected to the outer wall of the treatment pool, the lower surface of one end of the auger conveyor is provided with a discharge end arranged toward the feeding section, and the upper surface of the other end is connected to a hopper.

[0018] As a further arrangement of the above scheme, a row of guide sleeves are provided on the outer wall of the slag discharge section of the treatment pool close to the feeding section, and impact rods are inserted in the guide sleeves. The outer ends of all the impact rods are connected with vertical bars, and springs are connected between the vertical bars and the treatment pool or the guide sleeves. A pushing mechanism for acting on the vertical bars is provided on the outer ring cylinder.

[0019] As a further arrangement of the above scheme, the pushing mechanism includes a plurality of connecting parts arranged on the top of the outer ring cylinder, and the connecting parts correspond to each filter element, the end of the connecting part extending out of the treatment tank is connected with an arc-shaped protrusion, and the upper end of the vertical bar is connected with an abutment wheel that acts on the arc-shaped protrusion.

[0020] Through the design of the above-mentioned guide sleeve, impact rod, spring and pushing mechanism, after the materials in the fan-shaped sewage treatment area are cleaned, the built-in filter layer on the filter element can be actively impacted, and the kinetic energy generated by the impact can be used to shake off the retained material attached to the filter element, thereby ensuring the filtering effect of the clear liquid when the fan-shaped sewage treatment area is rotated and put into use again.

[0021] Compared with the prior art, the beneficial effects are as follows:

[0022] The heavy metal sewage treatment equipment disclosed in the present invention adopts a rotary structure design, and utilizes an outer ring cylinder, a hollow rotating shaft and a radial partition to divide the interior of a treatment pool into a plurality of synchronously rotating fan-shaped sewage treatment areas, and during the sewage treatment process, sewage to be treated and a reagent are added to each fan-shaped sewage treatment area, and after the addition is completed, the action between the pinion and the tooth surface on the outer circumference of the circular wheel can be utilized in the subsequent rotation process to first stir the sewage and the reagent in the fan-shaped sewage treatment area, accelerate the flocculation and precipitation of heavy metal ions in the sewage, and then relatively stand and precipitate, and after the precipitation is completed, the upper clear liquid is filtered and discharged, and finally the turbid liquid and the precipitated residue are discharged; the entire equipment realizes batch and continuous treatment of heavy metal sewage, and greatly improves the treatment effect of heavy metal sewage.

[0023] The heavy metal wastewater treatment disclosed in the present invention realizes solid-liquid separation after the turbid liquid and the precipitated residue are discharged. The turbid liquid after the solid-liquid separation can be sent to the wastewater container tank again for the next treatment, thereby ensuring the treatment effect of the heavy metal wastewater and making the discharged clear liquid meet the emission standards.

[0024] The present invention has further made an improved design. After the turbid liquid and precipitated slag in the fan-shaped sewage treatment area are discharged, before it rotates to enter the feeding section, it can also utilize the effect of the arc-shaped protrusion on the abutment wheel, first making the impact rod and the vertical bar move outward synchronously and then stretching the spring to accumulate energy. Then, after the abutment wheel slips off the arc-shaped protrusion, the elastic potential energy is utilized to make the impact rod directly hit the filter element, thereby shaking off and cleaning the debris attached to the filter element, thereby ensuring the subsequent filtering effect of the filter element. It does not require the operator to stop the machine to manually clean the filter element, thus realizing full automation of the entire sewage treatment process, and its use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the outer ring cylinder, radial partition plate, round wheel, etc. in the present invention;

[0029] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the treatment pool in the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the outer ring cylinder, the stirring shaft, the radial partition plate, etc. in the present invention;

[0031] Figure 6 It is a schematic diagram of the internal three-dimensional structure of a partial cross section of the outer ring cylinder in the present invention;

[0032] Figure 7 It is a schematic diagram of the planar structure of the area division of the treatment pool in the present invention;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the filter box, filter plate, etc. in the present invention;

[0034] Fig. 9This is a schematic diagram of the three-dimensional structure of the treatment tank, outer cylinder, connecting parts, etc. in Example 2 of the present invention;

[0035] Fig.10 This is a schematic diagram of the connection structure between the treatment pool and the impact rod, vertical bars, etc. in Example 2 of the present invention. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0038] Example 1 discloses a rotary heavy metal wastewater treatment device, see Attachment Figure 1 ~Attached Figure 8 , including a sewage container tank 1 and a cylindrical treatment pool 2, a bottom plate 3 is arranged below the treatment pool 2, and a plurality of supporting legs 4 are connected between the bottom plate 3 and the lower surface of the treatment pool 2, so as to achieve stable support of the treatment pool 2.

[0039] The lower end of the sewage container tank 1 is connected to an infusion pump 5, and the discharge end of the infusion pump 5 is connected to an infusion tube 6, and the end of the infusion tube 6 is arranged toward the upper end opening of the treatment tank 2. In addition, a drug dosing device 7 is fixedly arranged on the outer surface of the treatment tank 2 near the side of the infusion tube 6. The drug dosing device 7 includes a hopper 701 and an auger conveyor 702, the hopper 701 is connected to the upper surface of the outer end of the auger conveyor 702, and the discharge end of the auger conveyor 702 and the discharge end of the infusion tube 6 are arranged toward the same area in the treatment tank 2.

[0040] A hollow rotating shaft 8 and an outer ring cylinder 9 are concentrically arranged in the treatment tank 2, and a plurality of radial partitions 901 are evenly arranged circumferentially between the outer ring cylinder 9 and the hollow rotating shaft 8, and the entire annular space is equally divided into a plurality of sector-shaped sewage treatment areas by the radial partitions 901. In this figure, there are eight radial partitions 901, which take the sector-shaped sewage treatment area corresponding to the reagent dosing device 7 as the starting point, and divide the entire treatment tank 2 into a feeding section, a stirring reaction section, a sedimentation section, a drainage section, and a slag discharge section in the circumferential direction in a counterclockwise direction.

[0041] A sealed bearing connected to the hollow shaft 8 is provided at the center of the bottom wall of the treatment tank 2, and a power assembly 11 for driving the hollow shaft 8 to rotate is provided on the lower surface of the treatment tank 2. The specific power assembly 11 is a conventional arrangement, which includes a gear box, a driven gear 801 is provided at the end of the hollow shaft 8 extending to the gear box, and then a power motor is provided on the gear box, and a driving gear extending into the gear box and meshing with the driven gear 801 is provided on the output shaft of the power motor, so that the slow rotation of the hollow shaft is realized under the power input of the power motor and the meshing transmission of the gears.

[0042] The lower end of the outer ring tube 9 fits with the bottom wall of the treatment tank 2, and the outer circular surface of the outer ring tube 9 fits with the inner circular wall of the treatment tank 2. Then, a vertical strip opening aligned with each sewage treatment area is opened on the outer circular surface of the outer ring tube 9, and a filter element 10 is detachably installed on the inner side surface of the vertical strip opening through connecting parts such as screws. The filter element 10 consists of an outer rectangular frame and a built-in filter layer, and the outer rectangular frame is provided with connecting holes corresponding to the screws.

[0043] A column 12 is arranged in the hollow shaft 8, and the upper and lower ends of the column 12 are penetrated by the hollow shaft 8, and then the lower end of the column 12 is fixedly connected to the base plate 3 through a disc, so that the hollow shaft 8 can rotate around the column 12 under the action of the power component 11.

[0044] At the same time, a round wheel 13 is connected to the top of the column 12 extending out of the hollow shaft 8, and a tooth surface is arranged on the outer circumferential surface of the round wheel 13 corresponding to the feeding section and the stirring reaction section. An outwardly extending ring plate 14 is arranged at the top of the hollow shaft 8, and a bearing aligned with each sector-shaped sewage treatment area is arranged at the outer end of the ring plate 14, and then a stirring shaft 15 extending to the bottom of the sector-shaped sewage treatment area is installed in the bearing, and a pinion 16 meshing with the tooth surface on the round wheel 13 is connected to the upper end of the stirring shaft 15, and a stirring assembly 17 consisting of an impeller and a stirring rod is arranged at the bottom of the stirring shaft 15.

[0045] An oblique opening 201 is provided on the outer circumference of the treatment tank 2 corresponding to the drainage section, and one end of the oblique opening 201 close to the sedimentation section is flush with the upper end of the filter element 10, and the other end of the oblique opening 201 is flush with the lower end of the filter element 10. A liquid receiving tank 18 is fixedly provided on the outer circumference of the treatment tank 2 below the oblique opening 201, and a liquid discharge pipe 19 is connected to the bottom of the liquid receiving tank 18.

[0046] A slag discharge port is provided on the bottom wall of the treatment tank 2 corresponding to the slag discharge section, and the slag discharge port is also fan-shaped. A filter box 20 connected to the slag discharge port is connected to the lower surface of the treatment tank 2, and an inclined filter screen or filter plate 21 is installed in the filter box 20, and a vertical downward slag discharge channel 22 is connected to the inclined lower end of the filter screen or filter plate 21, and a first liquid return pipe 23 is connected to the lower surface of the filter box 20, and a liquid return pump 24 is connected to the end of the first liquid return pipe 23, and a second liquid return pipe 25 connected to the upper end of the sewage container tank 1 is connected to the discharge end of the liquid return pump 24.

[0047] During the operation of the rotary heavy metal sewage treatment equipment disclosed in this embodiment 1, when the power component 11 drives the hollow shaft 8 to rotate slowly and causes the fan-shaped sewage treatment area to rotate and move to the feeding section, the infusion pump 5 and the chemical dosing device 7 are started to simultaneously add the heavy metal sewage and the chemical in the sewage container tank 1 to the fan-shaped sewage treatment area.

[0048] Then, as the hollow shaft 8 continues to rotate, the pinion 16 at the upper end of the stirring shaft 15 will mesh with the tooth surface on the circular wheel 13, thereby driving the stirring shaft 15 and the stirring assembly 17 to rotate in the fan-shaped sewage treatment area, achieving rapid mixing of sewage and chemicals, and thereby quickly precipitating heavy metal ions in the sewage.

[0049] When rotating to the sedimentation stage, the pinion 16 no longer meshes with the tooth surface on the circular wheel 13 , and the rotation speed of the sector-shaped sewage treatment area is relatively low, so that the heavy metal ions in the entire sector-shaped sewage treatment area are statically precipitated to the bottom of the treatment tank 2 .

[0050] When rotating to the drainage section, due to the presence of the oblique stripe 201, the upper end of the filter element 10 is first connected to the oblique stripe 201, and at this time, the upper clear liquid after standing can be intercepted and filtered by the filter element 10 and then flow out from the oblique stripe 201, flow into the liquid receiving tank 18, and finally discharged from the drain pipe 19. At the same time, during the slow rotation of the fan-shaped sewage treatment area, the filter element 10 is connected to the oblique stripe 201 from top to bottom, so that the wastewater after standing and discharging can be discharged from the fan-shaped sewage treatment area from top to bottom, until a small amount of bottom turbid liquid and sediment remain at the bottom of the fan-shaped sewage treatment area.

[0051] When rotating to the slag discharge section, the remaining turbid liquid and sediment can fall into the filter box 20 through the slag discharge port, and after being filtered by the filter screen or filter plate 21, the sediment slag is discharged from the slag discharge channel 22, and the filtered turbid liquid is transported to the sewage container tank 1 by the return liquid pump 24 and two return liquid pipes for re-discharge. Finally, after the slag discharge is completed, the fan-shaped sewage treatment area enters the feeding section again, and then repeats the above steps to achieve continuous treatment of heavy metal sewage. Example 2

[0052] Example 2 discloses a rotary heavy metal wastewater treatment equipment that is optimized and improved based on the technical solution in Example 1, and the similarities between it and Example 1 are not described again.

[0053] Reference Fig. 9 and attached Fig.10 In this embodiment 2, a connecting piece 26 is provided at the top of the outer ring cylinder 9 corresponding to each filter element 10. The connecting piece 26 passes through the top opening of the treatment tank 2 and extends to the outer circular surface of the treatment tank 2. Then, an arc-shaped protrusion 27 is provided at the lower end of the outer side of the connecting piece 26.

[0054] A plurality of guide sleeves 28 spaced apart from each other are arranged on the outer wall of the slag discharge section of the treatment tank 2 near the feeding section, and a collision rod 29 is sealed and inserted in each guide sleeve 28, and then a vertical bar 30 is commonly connected to the outer ends of all the collision rods 29, and a spring 31 is connected between the vertical bar 30 and the outer wall of the treatment tank 2 or the guide sleeve 28, so that the collision rod 29 is sealed and inserted in the guide sleeve 28 under the action of the spring 31. In addition, an abutment wheel 32 is also arranged on the top of the vertical bar 30, and the abutment wheel 32 can interact with the arc-shaped protrusion 27 during the rotation of the outer ring cylinder 9.

[0055] Through the above-mentioned improved design, this embodiment 2, after rotating to the slag discharge section, the turbid liquid and sediment in the fan-shaped sewage treatment area first fall into the filter box 20 through the slag discharge port, and then during the continued rotation, the arc-shaped protrusion 27 at the outer end of the connecting piece 26 will interact with the abutment wheel 32. Due to the squeezing effect of the arc-shaped protrusion 27, the entire vertical bar 30 will move away from the treatment tank 2, and the impact rod 29 will be pulled outward while the spring 31 will be stretched and accumulated.

[0056] Subsequently, when the abutment wheel 32 slips off the arc-shaped protrusion 27, the filter element 10 is aligned with the guide sleeve 28. Under the action of the potential energy of the spring 31, the vertical bar 30 will instantly move toward the treatment tank 2, and the impact rod 29 will hit the built-in filter layer of the filter element 10, thereby shaking off the sediment trapped on the built-in filter layer of the filter element 10 to avoid clogging the filter element 10 and affecting the subsequent filtering effect.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary heavy metal wastewater treatment equipment, comprising a wastewater container tank and a cylindrical treatment tank, wherein the wastewater container tank is provided with a feeding assembly for feeding materials into the treatment tank, and the outside of the treatment tank is provided with a reagent dosing device for feeding materials into the same position of the feeding assembly, characterized in that: A column is fixedly provided through the center of the treatment pool, a hollow shaft is rotatably provided on the periphery of the column and is sealed and connected to the bottom wall of the treatment pool, an outer ring cylinder is fitted on the inner wall of the treatment pool, and the outer ring cylinder and the hollow shaft are divided into a plurality of sector-shaped sewage treatment areas by a plurality of circumferentially uniform radial partitions, and the sector-shaped sewage treatment area corresponding to the reagent dosing device is taken as the starting point, and the entire treatment pool is divided into a feeding section, a stirring reaction section, a sedimentation section, a drainage section and a slag discharge section in the circumferential direction in a counterclockwise direction; The top end of the column extending out of the hollow shaft is fixedly connected to a round wheel, the outer circumferential surface of the round wheel is provided with tooth surfaces corresponding to the feeding section and the stirring reaction section, the top of the hollow shaft is connected to a ring plate, and stirring shafts corresponding to each sector-shaped sewage treatment area are evenly arranged on the ring plate in the circumferential direction, the lower end of the stirring shaft is provided with a stirring assembly located in the sector-shaped sewage treatment area, and the upper end of the stirring shaft is provided with a pinion meshing with the tooth surface on the round wheel; A vertical strip opening aligned with each fan-shaped sewage treatment area is provided on the outer circumferential surface of the outer ring cylinder, a filter is installed on the outer ring cylinder inside the vertical strip opening, an oblique strip opening is provided on the outer circumferential surface of the treatment tank corresponding to the drainage section, a liquid receiving trough is provided on the outer surface of the treatment tank below the oblique strip opening, a liquid receiving trough is connected to a liquid discharge pipe, a slag discharge opening is provided on the bottom wall of the treatment tank corresponding to the slag discharge section, and a filter reflux component is connected to the lower end of the slag discharge opening; One end of the oblique line opening close to the sedimentation section is flush with the upper end of the filter element, and the other end of the oblique line opening is flush with the lower end of the filter element.

2. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: A sealed bearing for penetrating the column is arranged at the center of the bottom wall of the treatment pool, the lower end of the hollow shaft is connected to the sealed bearing, and a power component is connected to the hollow shaft below the sealed bearing.

3. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: The filtering reflux assembly includes a filter box connected to the lower end of the slag discharge port, an inclined filter layer is installed in the filter box, the inclined lower end of the filter layer is connected to a slag discharge channel facing vertically downward, the lower surface of the filter box is connected to a first liquid return pipe, the end of the first liquid return pipe is connected to a liquid return pump, and the discharge end of the liquid return pump is connected to a second liquid return pipe connected to a sewage container tank.

4. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: The outer end of the ring plate is provided with a bearing aligned with each sector-shaped sewage treatment area, and the stirring shaft is connected to the bearing.

5. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: The feeding assembly comprises an infusion pump connected to the sewage container tank, and the discharge end of the infusion pump is connected to an infusion tube arranged toward the feeding section.

6. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: The reagent dosing device comprises an auger conveyor fixedly connected to the outer wall of the treatment pool, wherein a lower surface of one end of the auger conveyor is provided with a discharge end arranged toward the feeding section, and an upper surface of the other end is connected with a hopper.

7. The rotary heavy metal wastewater treatment equipment according to claim 1 is characterized in that: A row of guide sleeves is arranged on the outer wall of the slag discharge section of the treatment pool on the side close to the feeding section, and a collision rod is inserted in the guide sleeve. The outer ends of all the collision rods are connected with vertical bars, and springs are connected between the vertical bars and the treatment pool or the guide sleeves. A pushing mechanism for acting on the vertical bars is arranged on the outer ring cylinder.

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