Pre-separation device and magnetic coagulation return sludge treatment system

Abstract

The utility model provides a pre-separation device and a magnetic coagulation return sludge treatment system, and relates to the field of sewage treatment equipment. The pre-separation device comprises a bracket, an overflow cylinder and a reflux cylinder; the upper part of the overflow cylinder is connected into the backflow cylinder; a sludge backflow area is formed between the overflow cylinder and the backflow cylinder, and sludge overflows from the top of the overflow cylinder to the sludge backflow area under the lifting action of the water pump; water outlet pipes are symmetrically arranged at the bottom of the backflow cylinder on one side of the sludge backflow area along the radial direction, and a partition plate is arranged between the two water outlet pipes to partition the sludge backflow area; an adjusting assembly is movably connected to the interior of the sludge backflow area, and the sludge in the sludge backflow area is shunted through the adjusting assembly so as to control the sludge discharge amount in the water outlet pipe; different sludge is distributed into different discharge pipes to be discharged through the adjusting assembly, and a pump body does not need to be additionally arranged for adjustment, so that the electric quantity and the carbon emission are reduced.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to a pre-separation device and a magnetic coagulation return sludge treatment system. Background Art

[0002] At present, the magnetic coagulation process is more and more widely used in water treatment, especially in the field of deep treatment. With the application of the process, the equipment structure is becoming more and more fixed. In particular, how to streamline the return sludge and the remaining sludge, the equipment used in the existing magnetic coagulation sewage treatment technology requires at least two pumps, one of which is used to transport the return sludge and the other is used to transport the remaining sludge. With at least two pumps, in some projects with small water volume, the selected slurry pump with low flow cannot be selected, and only a pump with a larger flow rate than the designed flow rate can be selected, which increases the project investment and the electricity consumption. Utility Model Content

[0003] The utility model aims to provide a pre-separation device and a magnetic coagulation return sludge treatment system to solve the problem that the prior art uses at least two pumps to transport return sludge and residual sludge, which makes pump selection difficult and increases power consumption.

[0004] Based on the above purpose, in a first aspect, the present application provides a pre-separation device, comprising a bracket, an overflow tube and a reflux tube; the bottom of the reflux tube is fixed to the top of the bracket; the upper part of the overflow tube is arranged inside the reflux tube;

[0005] A sludge return zone is formed between the overflow tube and the return tube, and the sludge overflows from the top of the overflow tube to the sludge return zone through the lifting action of the water pump; two water outlet pipes are arranged below the return tube, and the two water outlet pipes are located on the same side of the radial direction of the sludge return zone, and a partition plate is arranged between the overflow tube and the return tube to separate the sludge return zone, and the partition plate is located between the two water outlet pipes;

[0006] An adjusting component is movably connected between the overflow tube and the return tube. By adjusting the position of the adjusting component along the circumferential direction of the sludge return zone, the sludge in the sludge return zone is diverted to control the sludge discharge amount in the two outlet pipes respectively.

[0007] Furthermore, a plurality of the adjusting components are distributed at preset angles along the circumferential inner walls of the overflow tube and the reflux tube, and two sides of the adjusting components are respectively connected to the overflow tube and the reflux tube.

[0008] Furthermore, the regulating component includes a plug plate and a plug block; the plug blocks are respectively connected along the same radial direction of the overflow tube and the return tube, the plug plate is plug-connected between the corresponding two plug blocks, and at least one plug plate is provided. By adjusting the plug plate to be located in different plug blocks, the sludge in the sludge return zone is diverted to control the diversion amount of the sludge, and the sludge located on both sides of the plug plate is discharged from the two outlet pipes respectively.

[0009] Furthermore, the insert block has a U-shaped structure.

[0010] Furthermore, a weir plate is connected to the top of the overflow tube, and the weir plate is in a circular ring structure. The weir plate is used to adjust the sludge discharge balance so that the sludge inside the overflow tube overflows evenly into the sludge return area.

[0011] Furthermore, it also includes a cover plate, which is located on the top of the reflux cylinder and is used to seal the top of the reflux cylinder.

[0012] Furthermore, a handle is connected to the center of the top of the cover plate to facilitate taking the cover plate.

[0013] Furthermore, a water inlet pipe is connected to the bottom of the overflow tube, and the water inlet pipe is used to transport external sludge into the overflow tube.

[0014] Furthermore, the water pump is connected to the water inlet pipe, and the sludge from the outside is transported to the water inlet pipe through the water pump.

[0015] Furthermore, a connecting plate is provided at the bottom of the overflow tube, and the overflow tube is connected to the bracket through the connecting plate.

[0016] In a second aspect, the magnetic coagulation return sludge treatment system provided by the present application comprises a deflocculator, a separator and the above-mentioned pre-separation device;

[0017] The inlet end of the deflocculating machine is connected to the water outlet pipe through a first pipe;

[0018] The inlet end of the separator is communicated with the outlet end of the deflocculant through a second pipeline.

[0019] By adopting the above technical solution, the present application provides a pre-separation device and a magnetic coagulation return sludge treatment system, which have the following technical effects compared with the prior art:

[0020] The pre-separation device of the present application includes a bracket, an overflow tube and a reflux tube; the upper part of the overflow tube is connected to the reflux tube; a sludge reflux zone is formed between the overflow tube and the reflux tube, and the sludge overflows from the top of the overflow tube to the sludge reflux zone through the lifting action of the water pump; a discharge pipe is symmetrically arranged on one side of the sludge reflux zone along the radial direction, and a partition plate is arranged between the two discharge pipes to separate the sludge reflux zone; an adjusting component is movably connected inside the sludge reflux zone, and the sludge in the sludge reflux zone is diverted by adjusting the different positions of the adjusting component to control the amount of sludge discharged in the discharge pipe. By adjusting the adjusting component to be at different positions along the circumferential direction of the sludge reflux zone, the adjusting component and the partition plate separate the sludge reflux zone into two areas of different areas, so that the sludge in the two areas is respectively distributed to different discharge pipes for discharge, thereby realizing the control of the amount of reflux sludge and residual sludge, and there is no need to configure a second pump body for transportation.

[0021] Especially in scenarios with small water volumes, since there are no low-flow slurry pumps, only slurry pumps with flow rates higher than the design value can be selected, resulting in an increase in useless power. The present application can avoid this phenomenon, and there is no need to select an additional slurry pump. Only one water pump is needed, which reduces the useless power caused by the use of dual pumps and further reduces electricity and carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic cross-sectional view of the pre-separation device provided in Example 1 of the present application;

[0024] Figure 2 A schematic diagram of the structural distribution of the adjustment assembly and the partition plate connected between the overflow cylinder and the reflux cylinder in the pre-separation device provided in Example 1 of the present application;

[0025] Figure 3 A top view of the pre-separation device provided in Example 1 of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of the magnetic coagulation reflow sludge treatment system provided in Example 2 of the present application.

[0027] Icons: 1- bracket, 2- overflow tube, 3- return tube, 4- sludge return area, 5- outlet pipe, 6- partition plate, 7- adjustment assembly, 71- plug plate, 72- plug block, 8- weir plate, 9- inlet pipe, 10- cover plate, 11- handle; 13- deflocculant, 14- separator, 15- first pipeline, 16- second pipeline; 17- pre-separation device. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] The present application embodiment provides a pre-separation device, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a bracket 1, an overflow tube 2 and a reflux tube 3; the bottom of the reflux tube 3 is fixed to the top of the bracket 1; and the upper part of the overflow tube 2 is connected to the inside of the reflux tube 3.

[0033] A sludge return zone 4 is formed between the overflow tube 2 and the return tube 3, and the sludge return zone 4 is annular in shape as a whole; the sludge overflows from the top of the overflow tube 2 to the sludge return zone 4 through the lifting action of a water pump; two outlet pipes 5 are symmetrically arranged at the bottom of the return tube 3 on one side of the sludge return zone 4 in the radial direction, wherein one outlet pipe 5 is used to connect the residual sludge pipeline, and the other outlet pipe 5 is used to connect the return sludge pipeline; a partition plate 6 is arranged between the two outlet pipes 5, and the partition plate The two sides of 6 are respectively connected to the outer wall of the overflow tube 2 and the inner wall of the return tube 3 to separate the interior of the sludge return area 4; an adjusting component 7 is movably connected between the overflow tube 2 and the return tube 3 inside the sludge return area 4, and the position of the adjusting component 7 along the circumferential direction of the sludge return area 4 is adjusted to make the muddy water in the sludge return area 4 be diverted to control the sludge discharge amount in the two outlet pipes 5 respectively, thereby realizing the regulation of the flow of the residual sludge pipeline and the return sludge pipeline.

[0034] The present application adopts the above-mentioned technical solution, and by setting up a sleeve-connected overflow tube 2 and a return tube 3, the mud-water mixture is transported from the bottom of the overflow tube 2 to the overflow tube 2 under the lifting action of an external water pump, and then overflows from the top of the overflow tube 2 to the inside of the return tube 3, so that the sludge enters the sludge return area 4 between the return tube 3 and the overflow tube 2; the regulating component 7 is at different positions in the circumferential direction of the sludge return area 4, so that the sludge return area 4 on both sides of the regulating component 7 is divided into two areas with different areas, so that the sludge return area 4 is diverted; the sludge is diverted into two branches on both sides of the regulating component 7. Since two outlet pipes 5 are provided in the device, and the two outlet pipes 5 are completely separated by a partition plate 6, the sludge in the two branches is completely blocked, and the sludge in one branch can flow out through one of the outlet pipes 5, and the sludge in the other branch can flow out through the other outlet pipe 5, thereby achieving the purpose of controlling the flow of the residual sludge pipeline and the return sludge pipeline, and there is no need to configure two additional pumps to control the flow of the return sludge and the residual sludge.

[0035] As a preferred embodiment, a plurality of adjustment components 7 are distributed at preset angles along the circumferential inner walls of the overflow tube 2 and the reflux tube 3 ; two sides of the plurality of adjustment components 7 are connected to the inner walls of the overflow tube 2 and the reflux tube 3 , respectively.

[0036] Specifically, with the partition plate 6 as the starting point, the regulating assembly 7 is arranged at multiple angles along the inner wall of the overflow tube 2 with the axis of the overflow tube 2 or the return tube 3 as the center. The purpose of such arrangement is to make the areas of the two regions formed between the two sides of the partition plate 6 and the regulating assembly 7 different by making the angles between the regulating assembly 7 and the partition plate 6 different; such arrangement realizes the difference in the amount of sludge on the two sides of the partition plate 6 to control the diversion amount of the return sludge.

[0037] As a preferred embodiment, Figure 2 As shown, the regulating assembly 7 includes a plug plate 71 and a plug block 72; a plurality of plug blocks 72 are arranged one by one in the circumferential direction of the overflow tube 2 and the return tube 3, at least one plug plate 71 is arranged, and a plug plate 71 is plugged and connected between two corresponding plug blocks 72. By adjusting the plug plate 71 to be located in different plug blocks 72, the diversion flow of sludge in the sludge return area 4 can be controlled, and the sludge located on both sides of the plug plate 71 is discharged from the two outlet pipes 5 respectively.

[0038] As a preferred embodiment, the insert block 72 is in a U-shaped structure.

[0039] As a preferred embodiment, a weir plate 8 is connected to the top of the overflow tube 2 . The weir plate 8 is a circular ring structure and is used to adjust the sludge discharge balance so that the sludge inside the overflow tube 2 evenly overflows into the sludge return area 4 .

[0040] Specifically, threaded holes are evenly spaced in the circumferential direction near the bottom of the weir plate 8, and through holes are opened at the top of the overflow tube 2 along the circumferential direction at positions corresponding to the threaded holes of the weir plate 8. The weir plate 8 is sleeved inside the overflow tube 2. When the threaded holes correspond to the positions of the through holes at the top of the overflow tube 2, bolts are passed through the through holes of the overflow tube 2 and the threaded holes of the weir plate 8 in sequence to thread the weir plate 8 to the top of the overflow tube 2.

[0041] As a preferred embodiment, the bottom of the overflow tube 2 extends beyond the bottom of the reflux tube 3 ; the bottom of the overflow tube 2 outside the reflux tube 3 is connected to a water inlet pipe 9 , which is used to transport external muddy water into the overflow tube 2 .

[0042] As a preferred embodiment, a water pump is connected to the water inlet pipe 9 , and muddy water from the outside is transported to the water inlet pipe 9 through the water pump.

[0043] As a preferred embodiment, a connecting plate is provided at the bottom of the overflow tube 2, and the bottom of the overflow tube 2 is connected to the bracket 1 through the connecting plate.

[0044] In this embodiment, an assembly hole is opened at the center of the bottom of the reflux tube 3, and the overflow tube 2 is sleeved inside the assembly hole. The top height of the overflow tube 2 is lower than the top height of the reflux tube 3. At the same time, the bottom of the reflux tube 3 is connected to the bracket 1 around to provide support through the bracket 1.

[0045] As a preferred embodiment, a cover plate 10 is further included. The cover plate 10 is located on the top of the reflux cylinder 3 and is used to seal the top of the reflux cylinder 3. The cover plate 10 can be made of organic glass to facilitate staff to observe the status inside the reflux cylinder.

[0046] As a preferred embodiment, a handle 11 is connected to the center of the top of the cover plate 10 for easy handling of the cover plate 10 .

[0047] Embodiment 2

[0048] like Figure 4 As shown, this embodiment provides a magnetic coagulation return sludge treatment system, including a deflocculant 13, a separator 14 and the pre-separation device 17 in the first embodiment;

[0049] The inlet end of the deflocculator 13 is connected to the outlet pipe 5 through the first pipe 15, which plays a role in the preliminary separation of flocs and magnetic powder in the sludge.

[0050] The inlet end of the separator 14 is connected to the outlet end of the deflocculant 13 through the second pipe 16, so as to separate the magnetic powder in the sludge again.

[0051] In this embodiment, the deflocculating machine 13 can adopt the high-efficiency deflocculating machine disclosed in the publication number CN116177699A, which can improve the separation efficiency of magnetic powder and flocs in the sludge;

[0052] The separator 14 may be a magnetic medium sedimentation separator disclosed in publication number CN111333159A, which is used to fully recover the magnetic medium in the sludge.

[0053] Since the above-mentioned deflocculating machine and separator are both public technologies, the embodiments of the present application will not describe their specific structures and working principles.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pre-separation device, characterized in that: It includes a bracket, an overflow tube and a reflux tube; the bottom of the reflux tube is fixed to the top of the bracket; the upper part of the overflow tube is arranged inside the reflux tube; A sludge return zone is formed between the overflow tube and the return tube, and the sludge overflows from the top of the overflow tube to the sludge return zone through the lifting action of the water pump; two water outlet pipes are arranged below the return tube, and the two water outlet pipes are located on the same side of the radial direction of the sludge return zone, and a partition plate is arranged between the overflow tube and the return tube to separate the sludge return zone, and the partition plate is located between the two water outlet pipes; An adjusting component is movably connected between the overflow tube and the return tube. By adjusting the position of the adjusting component along the circumferential direction of the sludge return zone, the sludge in the sludge return zone is diverted to control the sludge discharge amount in the two outlet pipes respectively.

2. A pre-separation device according to claim 1, characterized in that: A plurality of the adjusting components are distributed along the circumferential inner walls of the overflow cylinder and the return cylinder at preset angles, and two sides of the adjusting components are respectively connected to the overflow cylinder and the return cylinder.

3. A pre-separation device according to claim 2, characterized in that: The regulating assembly includes a plug plate and a plug block; the plug blocks are respectively connected along the same radial direction of the overflow tube and the return tube, the plug plate is plug-connected between the corresponding two plug blocks, at least one plug plate is provided, and by adjusting the plug plate to be located in different plug blocks, the sludge in the sludge return area is diverted to control the diversion amount of the sludge, and the sludge located on both sides of the plug plate is discharged from the two outlet pipes respectively.

4. A pre-separation device according to claim 3, characterized in that: The insert block is in a U-shaped structure.

5. A pre-separation device according to claim 1, characterized in that: A weir plate is connected to the top of the overflow tube, and the weir plate is in a circular ring structure. The sludge inside the overflow tube flows evenly through the weir plate into the sludge reflow area.

6. A pre-separation device according to claim 1, characterized in that: It also includes a cover plate, which is located on the top of the reflux cylinder and is used to seal the top of the reflux cylinder.

7. A pre-separation device according to claim 6, characterized in that: A handle is connected to the center of the top of the cover plate to facilitate taking the cover plate.

8. A pre-separation device according to claim 1, characterized in that: The bottom of the overflow cylinder is connected to a water inlet pipe, and the water pump is connected to the water inlet pipe, and the sludge from the outside is transported to the water inlet pipe through the water pump.

9. A pre-separation device according to claim 1, characterized in that: A connecting plate is provided at the bottom of the overflow tube, and the overflow tube is connected to the bracket via the connecting plate.

10. A magnetic coagulation return sludge treatment system, characterized in that: It comprises a deflocculator, a separator and a pre-separation device as claimed in any one of claims 1 to 9; The inlet end of the deflocculating machine is connected to the water outlet pipe through a first pipe; The inlet end of the separator is communicated with the outlet end of the deflocculant through a second pipeline.

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