An environmental engineering wastewater treatment device

Abstract

This utility model belongs to the field of wastewater treatment devices, and particularly relates to an environmental engineering wastewater treatment device. The device includes a sludge hopper, the bottom of which is composed of a multi-segment stepped conical structure. Each conical structure includes a first cone, a second cone vertically fixed to the smaller opening end of the first cone, a third cone vertically fixed to the smaller opening end of the second cone, and a bottom plate horizontally fixed to the smaller opening end of the third cone, enclosing it. The inclination angles of the second and third cones are smaller than those of the first and third cones. A sludge discharge pipe is vertically installed at the bottom of the bottom plate. This utility model facilitates the gradual reduction of sludge sliding resistance through the stepped conical structure formed by the first, second, and third cones, effectively reducing the sludge arching effect and preventing bridging of the outlet by compacted sludge. The sludge is then quickly discharged through the sludge discharge pipe.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment devices, and in particular relates to an environmental engineering wastewater treatment device. Background Technology

[0002] In wastewater treatment in environmental engineering projects, industrial sludge, such as iron-containing sludge from steel plants, has a high density and coarse particles, resulting in a fast initial settling speed. However, it is prone to hardening and compaction in the sludge hopper due to the adhesive properties of metal hydroxides and high solids content. The traditional 60° conical sludge hopper relies on gravity for sludge discharge, which has two major drawbacks. First, the cone angle design leads to high resistance to sludge sliding, forming "bridging" blockages, especially in the area above the sludge discharge port. Second, static accumulation causes the sludge to be compressed and compacted, reducing its water content and fluidity, resulting in excessively long sludge retention time in the sedimentation tank. Utility Model Content

[0003] The purpose of this invention is to provide an environmentally friendly wastewater treatment device that accelerates sludge discharge and prevents sludge hopper blockage.

[0004] The aforementioned environmental engineering wastewater treatment device includes a sludge hopper. The bottom of the sludge hopper is composed of a multi-stage stepped cone structure. The cone structure includes a first cone. A second cone is vertically fixed to the end of the first cone with a smaller opening. A third cone is vertically fixed to the end of the second cone with a smaller opening. A bottom plate is horizontally fixed to the end of the third cone with a smaller opening, which closes the cone. The inclination angle of the second cone is smaller than that of the first cone, and the inclination angle of the third cone is smaller than that of the second cone. A sludge discharge pipe is vertically installed at the bottom of the bottom plate.

[0005] Furthermore, the bottom of the base plate has several evenly distributed mud guide channels. The mud guide channels are in a "V" shape, with the smaller opening end connected to the mud discharge pipe. The mud guide channels are inclined with the outside higher than the inside.

[0006] Furthermore, the first cone has an inclination angle of 70°, the second cone has an inclination angle of 45°, and the third cone has an inclination angle of 20°.

[0007] Furthermore, a vibrator is installed at the bottom of the base plate.

[0008] Furthermore, the inner wall of the first cone is provided with at least three nozzles arranged in a circular pattern.

[0009] Furthermore, the angle between the nozzle and the first cone is 15°-30°.

[0010] Furthermore, the diameter of the sludge discharge pipe gradually decreases from top to bottom.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention facilitates the gradual reduction of sludge sliding resistance through a stepped cone structure formed by the first, second, and third cones. This effectively reduces the sludge arching effect, prevents sludge from bridging and clogging the outlet, and then allows the sludge to be quickly discharged through the sludge discharge pipe. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 BB section view; Figure 4 This is a schematic diagram of the structure of the present utility model. Figure 2 The components in the diagram are named as follows: 1. Mud hopper; 2. First cone; 3. Nozzle; 4. Second cone; 5. Third cone; 6. Base plate; 7. Mud discharge pipe; 8. Vibrator. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0014] Example This embodiment describes an environmental engineering wastewater treatment device, such as... Figure 1 As shown, the device includes a sludge hopper 1. The bottom of the sludge hopper 1 is composed of a multi-segment stepped cone structure. The cone structure includes a first cone 2. A second cone 4 is vertically fixed to the end of the first cone 2 with a smaller opening. A third cone 5 is vertically fixed to the end of the second cone 4 with a smaller opening. A bottom plate 6 is horizontally fixed to the end of the third cone 5 with a smaller opening, which closes the sludge. The inclination angle of the second cone 4 is smaller than that of the first cone 2, and the inclination angle of the third cone 5 is smaller than that of the second cone 4. This allows the stepped cone structure formed by the first cone 2, the second cone 4, and the third cone 5 to gradually reduce the sludge sliding resistance. The first cone 2 accelerates the falling of large sludge pieces, the second cone 4 slows down the flow rate, and the third cone 5 reduces the sludge accumulation pressure to prevent sludge caking and accumulation. This effectively reduces the sludge arching effect and avoids caking sludge from "bridging" and blocking the outlet. A sludge discharge pipe 7 is vertically installed at the bottom of the base plate 6 to facilitate the rapid discharge of sludge.

[0015] like Figure 1 and Figure 3As shown, the bottom of the base plate 6 has several evenly distributed sludge guide channels. The sludge guide channels are V-shaped in shape. The smaller end of the channel is connected to the sludge discharge pipe 7, which can significantly optimize the sludge flow path. The V-shaped cross-section of the channel forms a natural flow channel. The sludge slides naturally along the slope of the channel to the discharge port through the force of gravity, reducing the static accumulation in the flat bottom area. When the sludge moisture content is high, the channel structure can reduce the flow resistance. The ridges between adjacent channels can maintain the structural strength and prevent large-area sludge caking. The sludge layer is divided to form a strip flow. The sludge guide channel is inclined with the outside higher than the inside, which helps to prevent sludge and its particles from remaining in the sludge guide channel and causing blockage.

[0016] like Figure 4 As shown, the first cone 2 has an inclination angle of 70°, the second cone 4 has an inclination angle of 45°, and the third cone 5 has an inclination angle of 20°. Because iron-containing sludge tends to be static when the angle is small, the inclination angle of the first cone 2 is set to 70° to make it easier to use gravity to overcome the friction of the sludge and force it to slide down. Then, the flow velocity is reduced by the second cone 4 to avoid accumulation and reduce the impact force while maintaining a relatively stable flow velocity. Finally, the bottom plate 6 is set to reduce the vertical pressure of the sludge, thereby delaying the time of sludge caking.

[0017] like Figure 1 and Figure 2 As shown, a vibrator 8 is installed at the bottom of the base plate 6 to facilitate intermittent vibration of the base plate 6, avoid sludge compaction, and make sludge discharge smoother. The vibrator 8 can be installed on the outer bottom of the base plate 6 or on its inner bottom. When installed on the inner bottom, attention should be paid to waterproof sealing. The vibrator 8 can be electromagnetic or pneumatic piston type.

[0018] The inner wall of the first cone 2 is provided with at least three nozzles 3 arranged in a circular pattern, which facilitates breaking the arched blockage structure formed by the sludge through the nozzles 3 and restoring the normal flow of the sludge. The nozzle 3 can be selected as a flat nozzle or a spherical nozzle depending on whether pneumatic arch breaking or hydraulic flushing arch breaking is used; When nozzle 3 is pneumatic, the pneumatic nozzle is connected to the factory compressed air system through a DN25 stainless steel pipeline. The main pipeline is equipped with a pressure reducing valve and a pulse solenoid valve. A filter and an oil mist separator are installed before each nozzle. The pipeline uses quick-connect fittings for easy disassembly. The end nozzle is fixed to the mud bucket cone wall with a flange or thread. When nozzle 3 is water-driven, the hydraulic nozzle is connected to a multi-stage centrifugal pump via a high-pressure hose. A safety valve and pressure gauge are installed at the pump outlet. Each nozzle is equipped with an electric ball valve for independent control, and the nozzle adopts a rotary quick-release structure.

[0019] The angle between the nozzle 3 and the first cone 2 is 15°-30°. The angle design is based on the matching of fluid dynamics and sludge characteristics. The tangential installation at 15°-20° forms a spiral scouring flow field. Centrifugal force causes the sludge to rotate and slide down the wall to reduce residue, which is suitable for highly viscous sludge. When the angle is 25°-30°, the downward spraying combines shear force and gravity to effectively peel off the hardened layer, which is suitable for metal hydroxide sludge, thereby avoiding splashing from vertical spraying or energy loss at small angles.

[0020] The diameter of the sludge discharge pipe 7 gradually decreases from top to bottom, which facilitates the improvement of sludge transport efficiency. By gradually reducing the pipe diameter, the flow velocity gradient is maintained, which increases the flow velocity in the middle section of the pipe and effectively prevents sludge deposition. When in use, the large inlet pipe diameter reduces the initial flow resistance, and the small outlet pipe diameter enhances the shearing effect and destroys the sludge structure.

[0021] The working principle is as follows: First, the first cone 2 accelerates the fall of large sludge pieces, then the second cone 4 slows down the flow rate, and then the third cone 5 reduces the sludge accumulation pressure to prevent sludge caking and accumulation, which can effectively reduce the sludge arching effect. After the sludge falls on the bottom plate 6, it is divided into sludge layers by the V-shaped sludge guide channel, forming a strip-like flow that naturally slides towards the sludge discharge pipe 7 for discharge. Then, during the process, the vibrator 8 is intermittently activated to prevent sludge compaction, making the sludge discharge smoother. Finally, the nozzle 3 breaks the arch-shaped blockage structure formed by the sludge, restoring the normal flow of the sludge and allowing it to be discharged quickly.

Claims

1. An environmental engineering wastewater treatment device, comprising a sludge hopper (1), characterized in that: The bottom of the mud hopper (1) is composed of a multi-stage stepped cone structure, including a first cone (2), a second cone (4) is vertically fixed at the end of the first cone (2) with a smaller opening, a third cone (5) is vertically fixed at the end of the second cone (4) with a smaller opening, and a bottom plate (6) is horizontally fixed at the end of the third cone (5) with a smaller opening to close it. The inclination angle of the second cone (4) is smaller than that of the first cone (2), and the inclination angle of the third cone (5) is smaller than that of the second cone (4). A mud discharge pipe (7) is vertically installed at the bottom of the bottom plate (6).

2. The environmental engineering wastewater treatment device according to claim 1, characterized in that: The bottom of the base plate (6) has several evenly distributed mud guide grooves. The mud guide grooves are in the shape of a "V" shape. The smaller end of the mud guide groove is connected to the mud discharge pipe (7). The mud guide grooves are inclined with the outside higher than the inside.

3. The environmental engineering wastewater treatment device according to claim 2, characterized in that: The first cone (2) has an inclination angle of 70°, the second cone (4) has an inclination angle of 45° and the third cone (5) has an inclination angle of 20°.

4. The environmental engineering wastewater treatment device according to claim 3, characterized in that: A vibrator (8) is installed at the bottom of the base plate (6).

5. The environmental engineering wastewater treatment device according to claim 4, characterized in that: The inner wall of the first cone (2) is provided with at least three nozzles (3) arranged in a circular pattern.

6. The environmental engineering wastewater treatment device according to claim 5, characterized in that: The angle between the nozzle (3) and the first cone (2) is 15°-30°.

7. The environmental engineering wastewater treatment device according to claim 6, characterized in that: The diameter of the sludge discharge pipe (7) gradually decreases from top to bottom.

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