Self-cleaning type inclined plate sedimentation tank aeration washing-washing integrated device

Abstract

The utility model relates to a kind of self-cleaning formula inclined plate sedimentation tank aeration washing-washing integrated device, including perforated aeration pipe, top slide rail, flush pipe and nozzle;The perforated aeration pipe is arranged in net shape, as inclined plate filler framework;Perforated aeration pipe bottom is inclined downward and opened 25-45 ° aeration hole;The top slide rail is evenly distributed in turn above perforated aeration pipe;Flush pipe is respectively set between two adjacent top slide rails, and flush pipe left and right ends are respectively corresponding with two sides top slide rail sliding fit;The nozzle is evenly distributed in turn at the bottom of flush pipe, and nozzle is all inclined 55-65 ° to front, and it is matched with inclined plate;Flush pipe is connected to water supply system by hose.The utility model is through the integrated structure design of aeration washing, washing, can effectively overcome the problems, such as poor strength of filler structure, low cleaning efficiency, cleaning not thoroughly, in the operation of existing inclined plate sedimentation tank.

Description

Technical Field

[0001] This utility model relates to the field of industrial wastewater treatment technology, and in particular to a self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device. Background Technology

[0002] Inclined plate sedimentation tanks are one of the most commonly used sedimentation tanks in the water treatment industry. Utilizing the shallow tank theory, they improve the efficiency and compactness of the sedimentation tank and are widely used in industrial and municipal water supply and drainage treatment. Currently, the cleaning method for inclined plate sedimentation tanks is mainly manual cleaning, with workers periodically using high-pressure water guns to flush each hole of the inclined plate packing.

[0003] Currently, inclined plate sedimentation tanks have three major drawbacks: (1) Traditional PP packing supports use threaded steel or angle steel, which have poor load-bearing capacity and are prone to structural collapse due to sludge accumulation (traditional polypropylene inclined plate packing supports have a sludge load ≥15kg / m). 2 (1) When the deformation rate is generally over 30%); (2) Manual high-pressure cleaning requires machine shutdown and takes 4-6 hours for a single cleaning, affecting the continuous operation of the system; (3) Fixed flushing pipes have a cleaning blind zone of about 30%.

[0004] Therefore, there is an urgent need to develop an efficient, stable and economical cleaning device for inclined plate sedimentation tanks to solve the problem of cleaning sludge accumulated in the packing material of inclined plate sedimentation tanks. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device, which can effectively overcome the problems of poor packing structure strength, low cleaning efficiency and incomplete cleaning that exist in the operation of existing inclined plate sedimentation tanks.

[0006] The technical solution adopted in this invention is as follows: This utility model proposes a self-cleaning integrated aeration, flushing, and water washing device for inclined plate sedimentation tanks, comprising perforated aeration pipes, top slide rails, flushing pipes, and nozzles. The perforated aeration pipes are arranged in a mesh pattern, serving as the skeleton of the inclined plate packing. Aeration holes at 25-45° are obliquely opened on both sides of the bottom of the perforated aeration pipes. The top slide rails are evenly distributed above the perforated aeration pipes. The flushing pipes are respectively installed between two adjacent top slide rails, with their left and right ends corresponding to the sliding fit of the top slide rails on both sides. The nozzles are evenly distributed at the bottom of the flushing pipes, and each nozzle is tilted forward at 55-65° to match the inclined plate. The flushing pipes are connected to the water supply system via flexible hoses.

[0007] Furthermore, the perforated aeration pipe is a DN32-DN65 stainless steel perforated pipe; the flushing pipe is DN40-DN65.

[0008] Furthermore, the aeration holes are Φ3-5mm, the hole diameter ratio is 1:8-1:15, and the hole spacing is 100-150mm.

[0009] Furthermore, the top slide rail is a C-shaped or V-shaped slide rail.

[0010] Furthermore, a set of symmetrical trolleys is installed at each of the left and right ends of the flushing pipe, and the trolleys slide in conjunction with the top slide rail.

[0011] Furthermore, the trolley includes a pulley and a connecting shaft; the pulley is rotatably connected to the connecting shaft; the trolley is rolled in the groove of the top slide rail by the pulley, and is connected to the end of the flushing pipe by the connecting shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a traditional PP packing support and aeration cleaning pipe, which can significantly reduce equipment costs; at the same time, the cleaning coverage of the inclined plate sedimentation tank can be increased to more than 90%, and the cleaning time can be shortened to within 1.5 hours. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the C-shaped top slide rail used in this utility model; Figure 3 This is a side view of the V-shaped top slide rail used in this utility model; Figure 4 A schematic diagram of the mesh arrangement structure of the perforated aeration pipe; Figure 5 for Figure 1 Top view of the middle section of the structure; Figure 6 This is a schematic diagram of the cross-section of a perforated aeration pipe; Figure 7 This is a schematic diagram of the structure of the C-shaped top slide rail and the trolley. Figure 8 This is a schematic diagram of the structure of the V-shaped top slide rail and the trolley. Figure 9 This is a schematic diagram of the aeration-rinsing coordinated operation of this utility model.

[0014] In the attached drawings, the following labels are used: 1-perforated aeration pipe; 11-aeration hole; 2-flushing pipe; 21-nozzle; 22-hose; 3-top slide rail; 4-trolley; 41-pulley; 42-connecting shaft; 5-inclined plate packing; 6-fixing plate. Detailed Implementation

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] It should be noted that in the description of this utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0017] Example 1 See appendix Figure 1 The present invention proposes a self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device, which includes a perforated aeration pipe 1, a top slide rail 3, a flushing pipe 2 and a nozzle 21.

[0018] The perforated aeration pipe 1 is a DN32-DN65 stainless steel perforated pipe, arranged in a mesh structure (spacing 300-1000mm), serving as a support skeleton for the inclined plate packing. Figure 4 As shown; the lower part of the perforated aeration pipe 1 has several evenly distributed aeration holes 11, angled downwards at 25-45°, preferably 30°, on both sides, as shown. Figure 6 As shown, the aeration holes 11 are Φ3-5mm, with a hole diameter ratio of 1:8-1:15 and an opening spacing of 100-150mm; the aeration pressure of the perforated aeration pipe 1 is 0.1-0.2MPa, preferably 0.15MPa, and it is connected to the compressed air system. It has both aeration disturbance and support functions, and the micro-turbulence generated during aeration can prevent sludge caking.

[0019] The top slide rails 3 are evenly distributed above and parallel to the mesh perforated aeration pipes 1, with a spacing of 1-2m. The rear end of the top slide rails 3 is fixed to the upper rear side of the sedimentation tank. In this embodiment, the top slide rails 3 are C-shaped slide rails made of 304 stainless steel, and the opening of the C-shaped slide groove faces downward.

[0020] The flushing pipe 2 is DN40-DN65, and it is vertically installed between two adjacent top slide rails 3. In this embodiment, the top slide rail 3 is a C-shaped slide rail with its opening facing downwards; the flushing pipe 2 is located below the top slide rail 3. A vertical fixing plate 6 is fixedly connected to each of the left and right ends of the flushing pipe 2; a set of symmetrically distributed trolleys 4 are installed on the upper part of each fixing plate 6, and the trolleys 4 roll in cooperation with the C-shaped grooves of the top slide rails 3 on both sides. Figure 3As shown.

[0021] like Figure 7 As shown, in this embodiment, the trolley 4 includes pulleys 41 and connecting shafts 42; the connecting shaft 42 passes through the corresponding position of the fixed plate 6 and is fixedly connected to it; the pulleys 41 are coaxially rotatably connected to the left and right ends of the connecting shaft 42; the trolley 4 is rolled in the C-shaped groove of the top slide rail 3.

[0022] A mechanical limiter or buffer device can be installed between the top slide rail 3 and the trolley 4 to prevent derailment; the four trolleys 4 at both ends of the flushing pipe 2 form a four-point support to prevent lateral displacement; wherein, the pulley 41 is made of stainless steel + nylon coated with rubber, with a diameter ≥50mm, to reduce rolling resistance.

[0023] The nozzles 21 are evenly distributed at the bottom of the flushing pipe 2 with a spacing of 60-100mm, and the nozzles 21 are all tilted forward at 55-65°, preferably 60°, to match the channel spacing of the inclined plate packing 5; the working pressure of the nozzles 21 is 0.3-0.5MPa, preferably 0.4MPa; the flushing pipe 2 is connected to the water supply system through the hose 22.

[0024] The cross-sectional area of ​​the flushing pipe 2 is S1, the nozzle orifice area is S2, the number of nozzles 21 is N, S1 / S2>K*N, and the coefficient K is 3~8, preferably 5~8.

[0025] Example 2 The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device proposed in this embodiment differs from Embodiment 1 in that: the top slide rail 3 in this embodiment is a V-shaped slide rail, and correspondingly, the pulley 41 is a V-shaped pulley, and the flushing pipe 2 is located above the top slide rail 3, as shown below. Figure 3 and 8 As shown. A V-shaped slide rail can be used as the pressure bar for the inclined plate packing 5.

[0026] In this embodiment, the trolleys 4 are respectively disposed at the bottom of the fixed plate 6. The bottom of the fixed plate 6 is fitted with a concave connector with an opening facing downwards. The connecting shaft 42 is fixedly connected between the two ends of the opening side of the concave connector. The pulley 41 is rotatably connected to the outside of the connecting shaft 42, and the V-groove of the pulley 41 is in rolling cooperation with the V-shaped slide rail.

[0027] During the operation of the inclined plate sedimentation tank, workers regularly inspect the operation of the inclined plates. If a large amount of flocs (lumps) are carried out from the channel of the inclined plate packing 5 to the clear water area, or if the effluent becomes significantly turbid and carries a large amount of suspended solids, it indicates that the inclined plate packing 5 has been contaminated with sludge and blocked the channel, and needs to be cleaned.

[0028] During cleaning, the first step is to drain the liquid, lowering the liquid level in the inclined plate sedimentation tank to 30mm above the inclined plate packing 5. The second step is to activate the aeration system, allowing compressed air to enter the tank through the perforated aeration pipe 1, forming numerous tiny bubbles at the bottom of the inclined plate packing 5. These bubbles rise to the liquid surface through the channels of the inclined plate packing 5. The micro-turbulence generated during the bubble rise disturbs the sludge layer attached to the channel walls, loosening it. The third step is to continue draining the liquid, lowering the liquid level in the inclined plate sedimentation tank to 30mm below the inclined plate packing 5. The fourth step is to open the flushing water valve, allowing cleaning water to be sprayed evenly from all nozzles 21 through the flushing pipe 2, forming a row of high-pressure water jets that flush the channel walls of the row of inclined plate packing 5 below the flushing pipe 2. Simultaneously, driven by the reaction force of the high-pressure flushing water or the diverted water flow, the flushing pipe 2 can slowly move along the top slide rail 3, from one side of the tank to the other, thoroughly cleaning the entire inclined plate packing 5. After cleaning, reset the integrated aeration flushing-water washing device, start water intake, and resume operation of the inclined plate sedimentation tank.

[0029] This invention employs a perforated aeration pipe 1 arranged in a mesh pattern as the supporting framework for the inclined plate packing 5. While providing aeration and flushing functions, it also supports the inclined plate packing 5, saving materials. The perforated aeration pipe 1 is made of stainless steel. Under the same weight, the strength (especially bending and torsional strength) and stiffness of steel pipes are far greater than those of angle steel and threaded steel, better able to withstand the collapse of the inclined plate packing 5 due to sludge accumulation. Simultaneously, a movable flushing pipe 2 is used to wash the inclined plate packing channels. By optimizing the nozzle orifice area of ​​the nozzle 21, the flushing water volume is evenly distributed to each channel of the inclined plate packing 5, allowing cleaning of areas inaccessible to manual cleaning and reducing blind spots. During the cleaning process, a row of inclined plate packing channels can be cleaned simultaneously, improving cleaning efficiency. A single cleaning session takes less than 1.5 hours, reducing the impact of sedimentation tank cleaning operations on the continuous operation of the system.

[0030] Matters not covered in this utility model are common knowledge.

[0031] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device, characterized in that: The device includes perforated aeration pipes, top slide rails, flushing pipes, and nozzles. The perforated aeration pipes are arranged in a mesh pattern, serving as the skeleton of the inclined plate packing. Aeration holes with an angle of 25-45° are opened downwards on both sides of the bottom of the perforated aeration pipes. The top slide rails are evenly distributed above the perforated aeration pipes. The flushing pipes are respectively installed between two adjacent top slide rails, and the left and right ends of the flushing pipes are respectively slidably engaged with the top slide rails on both sides. The nozzles are evenly distributed at the bottom of the flushing pipes, and the nozzles are all tilted forward at 55-65° to match the inclined plate. The flushing pipes are connected to the water supply system through flexible hoses.

2. The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device according to claim 1, characterized in that: The perforated aeration pipe is a DN32-DN65 stainless steel perforated pipe; the flushing pipe is DN40-DN65.

3. The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device according to claim 1, characterized in that: The aeration holes are Φ3-5mm, with a diameter ratio of 1:8-1:15 and a spacing of 100-150mm.

4. The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device according to claim 1, characterized in that: The top slide rail is a C-shaped or V-shaped slide rail.

5. The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device according to claim 4, characterized in that: The flushing pipe is equipped with a set of symmetrical trolleys at each of its left and right ends, and the trolleys slide in conjunction with the top slide rail.

6. The self-cleaning inclined plate sedimentation tank aeration flushing-water washing integrated device according to claim 5, characterized in that: The trolley includes a pulley and a connecting shaft; the pulley is rotatably connected to the connecting shaft; the trolley is rolled in the groove of the top slide rail by the pulley and is connected to the end of the flushing pipe by the connecting shaft.

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