A wastewater pretreatment equipment

Abstract

This utility model relates to a wastewater pretreatment device, comprising: a frame, a rake bucket, a screen, and a traction mechanism. The screen is inclinedly disposed at the lower part of the frame. The frame is provided with a first guide rail and a second guide rail, both inclined. The second guide rail is located in front of the first guide rail. A first roller is disposed at the lower part of the rake bucket, cooperating with the first and second guide rails. The traction mechanism is disposed at the top of the frame and connected to the top of the rake bucket. A flap is disposed on the first guide rail, capable of opening upwards. The flap is inclinedly disposed between the tops of the first and second guide rails, and the bottom ends of the first and second guide rails are interconnected. This application, through the arrangement of the first guide rail, the second guide rail, and the flap, enables the bottom of the rake bucket to separate or close from the screen, facilitating maintenance.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a wastewater pretreatment device. Background Technology

[0002] Environmental protection engineering mainly includes air pollution control engineering, water pollution control engineering, solid waste treatment and utilization engineering, and noise control engineering. Wastewater pretreatment is a preliminary step in water pollution control engineering. Its main purpose is to remove floating matter and solid particles from wastewater to prevent clogging of pipes, pumps, and valves during subsequent treatment.

[0003] A wire-driven bar screen cleaner uses a bar screen to intercept floating debris and solid particles. A moving rake then scrapes off the slag from the bar screen and moves it upwards to the top of the frame for skimming. This effectively pre-treats wastewater. Existing wire-driven bar screen cleaners use electro-hydraulic actuators to close or separate the rake from the bar screen. During operation, the electro-hydraulic actuators are immersed in wastewater and require regular maintenance. Utility Model Content

[0004] The technical problem this utility model aims to solve is to provide a wastewater pretreatment device that addresses the above-mentioned shortcomings. This application achieves separation or closure of the rake bucket bottom from the screen through the arrangement of a first guide rail, a second guide rail, and a flap, thus eliminating the need for an electro-hydraulic actuator and facilitating maintenance.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A wastewater pretreatment device includes: a frame, a rake bucket, a screen, and a traction mechanism. The screen is inclinedly disposed at the lower part of the frame. The frame is provided with a first guide rail and a second guide rail, both of which are inclined. The second guide rail is located in front of the first guide rail. The lower part of the rake bucket is provided with a first roller, which cooperates with the first and second guide rails. The traction mechanism is disposed at the top of the frame and connected to the top of the rake bucket. A flap is provided on the first guide rail, which can be opened upwards. The flap is inclinedly disposed between the tops of the first and second guide rails. The bottom ends of the first and second guide rails are connected to each other.

[0006] Furthermore, the bottom end of the flap is hinged to the top of the second guide rail, and the top end of the flap abuts against the first guide rail.

[0007] Furthermore, a torsion spring is provided at the hinge joint between the flap and the second guide rail, and the torsion spring can provide elastic force to make the top of the flap abut against the first guide rail.

[0008] Furthermore, the frame is also provided with an inclined third guide rail, which is located behind the first guide rail, and the upper part of the rake bucket is provided with a second roller that cooperates with the third guide rail.

[0009] Furthermore, a guide plate is provided at the top of the grille.

[0010] Furthermore, the traction mechanism includes a wire rope, a rope-supporting wheel, and a drive mechanism. The rope-supporting wheel is rotatably mounted on the top of the frame, and the drive mechanism is mounted on the top of the frame. The output end of the drive mechanism is connected to the rope-supporting wheel. One end of the wire rope is wound around the rope-supporting wheel, and the other end of the wire rope is connected to the top of the rake bucket.

[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: When the rake bucket of this utility model is skimming slag upwards, the first roller will push the flapper upwards, so that when the rake bucket is descending, the first roller will move to the second guide rail through the flapper, so that the bottom of the rake bucket will separate from the grid. This structure does not require the installation of an electro-hydraulic pusher, which is convenient for maintenance.

[0012] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the wastewater treatment equipment in the embodiments of this application; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a cross-sectional view of the wastewater treatment equipment when the rake bucket is moving upwards, as described in this embodiment of the application. Figure 4 This is a cross-sectional view of the sewage treatment equipment when the rake bucket is descending, as described in this embodiment of the application.

[0014] The attached diagram lists the components represented by each number as follows: 1. Frame; 11. First guide rail; 12. Second guide rail; 13. Flip plate; 131. Torsion spring; 14. Third guide rail; 2. Rake bucket; 21. First roller; 22. Second roller; 23. Slag barrier plate; 3. Grating; 4. Traction mechanism; 41. Wire rope; 42. Rope pulley; 43. Drive mechanism; 5. Outlet plate. Detailed Implementation

[0015] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise" and "counterclockwise" 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 indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Example 1 like Figure 1 As shown, a wastewater pretreatment device includes: a frame 1, a rake bucket 2, a screen 3, and a traction mechanism 4.

[0018] The grille 3 is inclinedly set at the lower part of the frame 1, and the bottom of the grille 3 is located on the front side of the top.

[0019] The frame 1 has a first guide rail 11 and a second guide rail 12 on both its left and right sides. Both the first guide rail 11 and the second guide rail 12 are inclined at the same angle as the grid 3. The highest point of the first guide rail 11 is higher than the highest point of the second guide rail 12, and the second guide rail 12 is located in front of the first guide rail 11. The rake bucket 2 is located in front of the grid 3, and both sides of the rake bucket 2 are provided with first rollers 21, which can roll along the first guide rail 11 and the second guide rail 12.

[0020] The traction mechanism 4 is located on the top of the frame 1. The traction mechanism 4 includes a wire rope 41, a rope support frame 42, and a drive mechanism 43. The rope support frame 42 is rotatably mounted on the top of the frame 1 via a bearing seat. The drive mechanism 43 includes a reducer and a motor. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the rope support frame 42. One end of the wire rope 41 is wound around the rope support frame 42, and the other end of the wire rope 41 is connected to the top of the rake bucket 2. In use, the motor drives the rope support frame 42 to rotate via the reducer, thereby winding or unwinding the wire rope 41 to allow the rake bucket 2 to rise or fall along the grid 3.

[0021] Preferably, the frame 1 is provided with several guide wheels to guide the extension direction of the wire rope 41.

[0022] like Figure 2 As shown, an inclined flap 13 is provided on the first guide rail 11. The bottom of the flap 13 is hinged to the top of the second guide rail 12. The top of the flap 13 abuts against the first guide rail 11. A torsion spring 131 is provided at the hinge point between the flap 13 and the second guide rail 12. The torsion spring 13 is used to provide elastic force to make the top of the flap 13 abut against the first guide rail 11. The bottoms of the first guide rail 11 and the second guide rail 12 are connected.

[0023] Preferably, the frame 1 is also provided with a third guide rail 14, which is inclined and the inclination angle is the same as that of the first guide rail 11. The third guide rail 14 is located behind the first guide rail 11. The upper part of the rake bucket 2 is provided with a second roller 22, which can roll along the third guide rail 14.

[0024] Preferably, the upper part of the third guide rail 14 is provided with a backward-curved arc section. When the second roller 22 moves into the arc section, the top of the rake bucket 2 will tilt backward to facilitate the dumping of floating objects and fixed particles on the slag baffle plate 23 onto the discharge plate 5.

[0025] Specifically, the bottom of the rake bucket 2 is equipped with a slag-blocking plate 23, which has multiple rake teeth that cooperate with the grid 3. The rake teeth can be inserted into the gaps of the grid 3 to scoop up floating debris and fixed particles intercepted on the front side of the grid 3. The top of the grid 3 is equipped with a discharge plate 5, which is used to discharge the floating debris and solid particles scooped up by the slag-blocking plate 23.

[0026] Decontamination operation process: (1) In the initial state, the rake bucket 2 is located on the upper part of the frame 1. During operation, sewage is introduced from the front side of the screen 3 and passes through the screen 3 from front to back (e.g., Figure 3 (From left to right in the middle), grating 3 is used to intercept floating debris and fixed particles in sewage; (2) When the traction mechanism 4 releases the wire rope 41, the rake bucket 2 descends. When the first roller 21 passes the flap 13, it will move along the flap 13 to the second guide rail 12. During this process, the slag-blocking plate 23 at the bottom of the rake bucket 2 will move away from the grid 3, resulting in a gap between the slag-blocking plate 23 and the grid 3. Figure 4 As shown; (3) When the first roller 21 descends to the bottom of the second guide rail 12, it will fall back onto the first guide rail 11 under the action of gravity. At this time, the rake bucket 2 is located at the bottom of the grid 3. (4) The traction mechanism 4 drives the rake bucket 2 to rise along the grid 3. The slag-blocking plate 23 at the bottom of the rake bucket 2 will rise with the rake bucket 2 and scoop up the floating objects and solid particles blocked by the grid 3, such as... Figure 3 As shown; (5) When the slag baffle at the bottom of the rake bucket 2 rises to the same height as the discharge plate 5, the floating objects and solid particles on the slag baffle will fall onto the discharge plate 5 under the action of gravity and be discharged along the discharge plate 5. (6) The traction mechanism 4 continues to drive the rake bucket 2 to rise. When the first roller 21 passes the flap 13, it will push the flap 13 open until the first roller 21 is completely moved above the flap 13. Then the flap 13 is reset to close the top of the first guide rail 11. When the rake bucket 2 moves to the top of the frame 1, a cleaning operation is completed.

[0027] Repeat (1) to (6) to perform the cyclical decontamination operation.

[0028] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A wastewater pretreatment device, characterized in that, include: The frame (1), the bucket (2), the grid (3), and the traction mechanism (4) are arranged. The grid (3) is inclinedly arranged at the lower part of the frame (1). The frame (1) is provided with a first guide rail (11) and a second guide rail (12). The first guide rail (11) and the second guide rail (12) are both inclined. The second guide rail (12) is located in front of the first guide rail (11). The lower part of the bucket (2) is provided with a first roller (21). The first roller (21) and the second guide rail (4) are connected. A guide rail (11) and a second guide rail (12) are fitted together. The traction mechanism (4) is set on the top of the frame (1). The traction mechanism (4) is connected to the top of the rake (2). A flap (13) is provided on the first guide rail (11). The flap (13) can be opened upward. The flap (13) is inclined between the top of the first guide rail (11) and the second guide rail (12). The bottom ends of the first guide rail (11) and the second guide rail (12) are connected to each other.

2. The wastewater pretreatment equipment according to claim 1, characterized in that, The bottom end of the flap (13) is hinged to the top of the second guide rail (12), and the top end of the flap (13) abuts against the first guide rail (11).

3. The wastewater pretreatment equipment according to claim 2, characterized in that, A torsion spring (131) is provided at the hinge of the flap (13) and the second guide rail (12), and the torsion spring (131) can provide elastic force to make the top of the flap (13) abut against the first guide rail (11).

4. The wastewater pretreatment equipment according to claim 1, characterized in that, The frame (1) is also provided with an inclined third guide rail (14), which is located behind the first guide rail (11). The upper part of the rake bucket (2) is provided with a second roller (22) that cooperates with the third guide rail (14).

5. The wastewater pretreatment equipment according to claim 1, characterized in that, The top of the grille (3) is provided with an outlet plate (5).

6. The wastewater pretreatment equipment according to claim 1, characterized in that, The traction mechanism (4) includes a wire rope (41), a rope-supporting wheel (42), and a drive mechanism (43). The rope-supporting wheel (42) is rotatably mounted on the top of the frame (1). The drive mechanism (43) is mounted on the top of the frame (1). The output end of the drive mechanism (43) is connected to the rope-supporting wheel (42). One end of the wire rope (41) is wound around the rope-supporting wheel (42), and the other end of the wire rope (41) is connected to the top of the rake bucket (2).

Images