A sewage waste liquid recovery pretreatment device

Abstract

The utility model discloses a kind of sewage waste liquid recovery pretreatment device, belong to sewage treatment technical field, including processing box, still including filter assembly for filtering waste liquid, still including the moving assembly for driving filter assembly movement;The import and export are opened in the both sides of the processing box;The filter assembly includes two groups of symmetrical filter basket, and the top of the filter basket is installed in moving frame by screw;The utility model is through setting two filter baskets, simple structure, convenient and practical, waste liquid can be filtered, and by setting moving assembly, filter basket filled with impurities can be removed from the inside of processing box, while another filter basket is moved to the inside of processing box and filters, without shutdown maintenance, greatly improve work efficiency, and filter basket can automatically discharge residue, entire pretreatment process does not need manual participation, greatly improve work efficiency, reduce processing cost.

Description

Technical Field

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

[0002] In each stage of wastewater treatment, in addition to the final "clean water" that meets discharge standards, waste liquid is also generated. If this waste liquid is discharged directly, it will cause serious secondary pollution to the environment. Moreover, the waste liquid is not entirely composed of "pollutants." Some components have recycling value and can be recycled through treatment, thereby reducing the overall operating cost of wastewater treatment plants. In order to improve the treatment and recycling effect of waste liquid, it is usually necessary to pre-treat the waste liquid. Pre-treatment filters out the larger solid impurities mixed in the waste liquid, thereby avoiding pipe blockage and improving the efficiency of subsequent treatment.

[0003] Currently, waste liquid is usually filtered using screens and filters, such as the waste liquid filter disclosed in announcement number CN221155711U. However, the filter structure such as screens and filters is easily clogged, requiring regular shutdowns for cleaning and maintenance, which affects the efficiency of waste liquid treatment. This problem has not been solved in the existing technology. Utility Model Content

[0004] The purpose of this utility model is to provide a wastewater pretreatment device for wastewater recovery. By setting two sets of filter baskets, wastewater can be filtered. By setting a moving component, the filter basket filled with impurities can be moved out of the treatment tank, while the other filter basket is moved into the treatment tank for filtration. No downtime maintenance is required, which greatly improves work efficiency and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A wastewater pretreatment device includes a treatment tank, a filter assembly for filtering wastewater, and a moving assembly for driving the filter assembly to move.

[0007] The processing box has inlets and outlets on both sides;

[0008] The filtration assembly includes two symmetrically arranged filter baskets. The top of the filter baskets is mounted to the movable frame with screws. Two sets of guide grooves are fixedly installed on the inner walls of both sides of the processing box. The guide grooves are slidably engaged with the sides of the movable frame. A slag discharge port is opened at the bottom of the filter basket. A flap is rotatably installed on the side of the slag discharge port near the other filter basket. The bottom of the flap abuts against the limiting guide rail. The limiting guide rail is slidably engaged with the flap and is fixedly connected to the processing box.

[0009] The moving component includes a drive frame, the bottom two sides of which are fixedly connected to the two sides of the moving frame via connecting blocks.

[0010] Preferably, a water inlet pipe is installed on one side of the top of the treatment box, and one end of the water inlet pipe is located directly above the filter basket inside the treatment box, and a water outlet pipe is installed at the bottom of the treatment box.

[0011] Preferably, two sets of movable slots are provided on the other two sides of the processing box, and the connecting block passes through the movable slots and slides with the movable slots.

[0012] Preferably, the drive frame is disposed on the top of the processing box and slides with the processing box, and a movable seat is fixedly installed in the middle of the top of the drive frame.

[0013] Preferably, the movable seat is mounted on the lead screw, and the two ends of the lead screw are rotatably mounted on the inner side of the first mounting seat, which is fixedly mounted on the top of the processing box.

[0014] Preferably, a motor is fixedly mounted on the outside of the first mounting base, and the output end of the motor is connected to one end of the lead screw.

[0015] Preferably, two sets of guide rods are provided on both sides of the lead screw, and the two ends of the guide rods are fixedly connected to the top surface of the processing box through a second mounting seat.

[0016] Preferably, a guide seat is slidably mounted on the surface of the guide rod, and the guide seat is fixedly connected to the drive frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model features two sets of filter baskets, a simple and convenient structure, which can filter waste liquid. By incorporating a movable component, the filter basket filled with impurities can be moved out of the treatment tank while the other filter basket is moved into the treatment tank for filtration. This eliminates the need for downtime maintenance, greatly improving work efficiency. Furthermore, the filter baskets can automatically discharge slag, and the entire pretreatment process requires no manual intervention, significantly increasing work efficiency and reducing treatment costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter basket structure;

[0021] Figure 3 This is a schematic diagram of the mobile component structure;

[0022] Figure 4 This is a schematic diagram of the processing box structure.

[0023] In the diagram: 1. Processing box; 2. Inlet and outlet; 3. Filter basket; 4. Moving frame; 5. Guide groove; 6. Flip plate; 7. Limiting guide rail; 8. Drive frame; 9. Connecting block; 10. Inlet pipe; 11. Outlet pipe; 12. Moving groove; 13. Moving seat; 14. Lead screw; 15. First mounting seat; 16. Motor; 17. Guide rod; 18. Second mounting seat; 19. Guide seat. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution:

[0026] A wastewater pretreatment device includes a treatment tank 1, with inlet and outlet 2 on both sides of the treatment tank 1. A water inlet pipe 10 is installed on one side of the top of the treatment tank 1, with one end of the water inlet pipe 10 located directly above the filter basket 3 inside the treatment tank 1. A water outlet pipe 11 is installed at the bottom of the treatment tank 1. Water curtains can be installed at the inlet and outlet 2 to prevent wastewater from splashing out without affecting the movement of the filter components.

[0027] By setting the treatment box 1 as the core carrier and reaction space of the device, a closed and controllable operating environment is provided for the pretreatment of waste liquid. The inlet and outlet 2 on both sides ensure that the filter components can switch between inside and outside under the drive of the moving components. The water inlet pipe 10 at the top accurately guides the waste liquid to be treated into the filter basket 3 inside the box, ensuring that the waste liquid completely flows through the filter structure. The water outlet pipe 11 at the bottom discharges the filtered clarified waste liquid to the subsequent treatment stage. At the same time, the guide groove 5 fixed on the inner wall of the treatment box 1 provides stable support for the movement of the filter basket 3, avoiding shaking and affecting the filtration efficiency. The limiting guide rail 7, which cooperates with the flip plate 6, provides mechanical triggering conditions for the automatic slag discharge of the filter basket 3. The overall structure design integrates functions such as filtration, switching and slag discharge, which is the basic carrier for realizing continuous pretreatment.

[0028] It also includes a filter assembly for filtering waste liquid. The filter assembly includes two symmetrically arranged filter baskets 3. The top of the filter baskets 3 is installed on the movable frame 4 by screws. Two sets of guide grooves 5 are fixedly installed on the inner walls of both sides of the treatment box 1. The guide grooves 5 are slidably engaged with the sides of the movable frame 4. The bottom of the filter basket 3 has a slag discharge port. A flap 6 is rotatably installed on the side of the slag discharge port near the other filter basket 3. The bottom of the flap 6 abuts against the limiting guide rail 7. The limiting guide rail 7 is slidably engaged with the flap 6 and is fixedly connected to the treatment box 1. The filter basket 3 is structurally a trapezoidal body adapted to the space of the treatment box 1, and is divided into a main filtration area, a top connection area, and a bottom automatic slag discharge area. The main filtration area has 1-3mm diameter holes. Round / elongated holes (staggered arrangement, rounded edges), with longitudinal reinforcing ribs on the sides and transverse reinforcing ribs at the bottom to resist deformation; the top has a flange edge (including screw mounting holes and sealing gaskets), which is fixed to the movable frame 4 by screws; the bottom has a rectangular slag discharge port, with a hinged flap 6 (with a bottom contact block) on one side, which can move with the filter basket 3 and cooperate with the limit guide rail 7 to achieve automatic opening and closing for slag discharge; in terms of materials, the main body is preferably made of 304 stainless steel (suitable for weak acid and alkali conventional waste liquids, electrolytic polishing treatment) or 316L stainless steel (suitable for strong corrosive waste liquids containing chloride ions, etc.), the flap 6 hinge is made of the same material, and the sealing gasket is selected as needed, either nitrile rubber (oil resistant) or fluororubber (resistant to strong acids and alkalis), taking into account high-efficiency filtration, non-stop slag removal and waste liquid resistance.

[0029] The filtration assembly is the core functional component for separating coarse impurities from waste liquid. Two symmetrically arranged filter baskets 3 work alternately, completely eliminating the drawback of traditional filtration structures requiring shutdown for cleaning. The filter baskets 3 intercept large particles such as gravel, fibers, and slag in the waste liquid through filter holes. Their trapezoidal structure and internal flow guide design promote impurity collection at the bottom. The detachable connection between the top and the movable frame 4 facilitates individual maintenance or replacement of the filter baskets 3, while the flange sealing gasket prevents waste liquid leakage from gaps. Crucially, the flap 6 at the bottom of the filter basket 3 and the limiting guide rail 7 form a linkage mechanism. When the filter basket 3 is inside the treatment box 1, the flap 6 is supported by the guide rail and closes the slag discharge port, ensuring normal filtration. When removed from the treatment box 1, the flap 6 automatically flips open, allowing for rapid discharge of impurities without manual cleaning. The alternating switching of the two filter baskets 3, combined with the drive of the movable assembly, allows the device to continuously filter without shutting down, significantly improving pretreatment efficiency.

[0030] It also includes a moving assembly for driving the filter assembly to move. The moving assembly includes a drive frame 8. The bottom two sides of the drive frame 8 are fixedly connected to the two sides of the moving frame 4 through connecting blocks 9. Two sets of moving slots 12 are provided on the other two sides of the treatment box 1. The connecting blocks 9 pass through the moving slots 12 and slide with the moving slots 12. The drive frame 8 is set on the top of the treatment box 1 and slides with the treatment box 1. A moving seat 13 is fixedly installed in the middle of the top of the drive frame 8. The moving seat 13 is installed on the lead screw 14. The two ends of the lead screw 14 are rotatably installed on the inner side of the first mounting seat 15. The first mounting seat 15 is fixedly installed on the top of the treatment box 1. A motor 16 is fixedly installed on the outer side of the first mounting seat 15. The output end of the motor 16 is connected to one end of the lead screw 14. Two sets of guide rods 17 are provided on both sides of the lead screw 14. The two ends of the guide rods 17 are fixedly connected to the top surface of the treatment box 1 through the second mounting seat 18. Guide rods 17 are slidably installed on the surface of the guide rods 17. The guide seat 19 is fixedly connected to the drive frame 8. The motor 16 is electrically connected to the control panel. The control panel has a waterproof housing as its outer shell and adopts a layered modular layout. The core is a control board composed of a single-chip microcomputer, which is equipped with four major modules: power supply, motor drive, monitoring, alarm and operation, as well as wiring terminal blocks. The power supply module converts 220V AC mains power to 24V DC and realizes leakage and overload protection. The motor 16 drive module receives commands from the control board through the L298N board to drive the motor 16 to drive forward and reverse rotation. The monitoring module collects status signals with the help of liquid level, position and current sensors. The alarm and operation module realizes human-machine interaction through buzzer, LED light and button. The wiring terminal block standardizes the wiring connection. During operation, the control board receives sensor signals and outputs commands according to the "start-run-switch-fault handling" logic, realizes one-button start and stop of the device, automatic switching of filter basket 3, and fault warning, and can complete pre-processing without manual intervention.

[0031] The movable component is the core of the power and transmission for the automated switching of the filter baskets 3. The movable component is powered by the motor 16, and the rotational motion is converted into the linear movement of the drive frame 8 through the threaded transmission of the lead screw 14 and the movable seat 13. The guide rods 17 and the guide seat 19 on both sides ensure that the drive frame 8 slides smoothly and avoids deviation and jamming. The drive frame 8 is rigidly connected to the movable frame 4 through the connecting block 9, which drives the two sets of filter baskets 3 to move synchronously along the guide groove 5 on the inner wall of the treatment box 1, so as to achieve seamless connection when one set of filter baskets 3 is working inside the box and the other set is discharging slag outside the box. The design of the movable groove 12 provides the moving space for the connecting block 9, while restricting its movement trajectory, ensuring that the filter basket 3 is accurately aligned with the water inlet pipe 10 and the internal space of the treatment box 1. The entire component is controlled by the linkage between the motor 16 and the control panel, and can automatically complete the switching according to the preset time or sensor signal without manual operation. From the mechanical transmission level, it ensures the feasibility of continuous operation of the device and is a key power system for improving pretreatment efficiency.

[0032] In practical use, after the device is installed in the designated position, the inlet pipe 10 guides the waste liquid into a set of filter baskets 3 in the treatment tank 1. The waste liquid intercepts large impurities through the filter holes of the filter baskets 3, and the clarified waste liquid is discharged from the outlet pipe 11 at the bottom of the treatment tank 1. When the device runs for the preset filtration time (which can be adjusted by the "Parameter Setting" key on the control panel) or when the position sensor detects that the filter baskets 3 are full of impurities, the control panel automatically commands the moving component to work. The motor 16 drives the lead screw 14 to rotate, which drives the drive frame 8 and the moving frame 4 to slide along the guide rod 17 and the guide groove 5, moving the filter baskets 3 filled with impurities out of the inlet and outlet 2 of the treatment tank 1. At the same time, another set of empty filter baskets 3 is moved into the treatment tank 1 and connected to the inlet pipe 10 to achieve continuous filtration without stopping the machine. As the removed filter baskets 3 are no longer supported by the limit guide rail 7 in the treatment tank 1, the bottom flap 6 automatically flips open, and the impurities fall into the preset slag receiving device to complete the automatic slag discharge.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater pretreatment device for recycling waste liquid, comprising a treatment tank (1), characterized in that: It also includes a filter assembly for filtering waste liquid, and a moving assembly for driving the filter assembly to move; The processing box (1) has inlets and outlets (2) on both sides; The filter assembly includes two symmetrically arranged filter baskets (3). The top of the filter baskets (3) is installed on the movable frame (4) by screws. Two sets of guide grooves (5) are fixedly installed on the inner walls of both sides of the processing box (1). The guide grooves (5) are slidably engaged with the sides of the movable frame (4). The bottom of the filter basket (3) is provided with a slag discharge port. A flap (6) is rotatably installed on the side of the slag discharge port near the other filter basket (3). The bottom of the flap (6) abuts against the limiting guide rail (7). The limiting guide rail (7) is slidably engaged with the flap (6). The limiting guide rail (7) is fixedly connected to the processing box (1). The moving component includes a drive frame (8), the bottom sides of which are fixedly connected to the sides of the moving frame (4) via connecting blocks (9).

2. The wastewater pretreatment device for recycling and treating wastewater according to claim 1, characterized in that: A water inlet pipe (10) is installed on one side of the top of the treatment box (1). One end of the water inlet pipe (10) is located inside the treatment box (1) directly above the filter basket (3). A water outlet pipe (11) is installed at the bottom of the treatment box (1).

3. The wastewater pretreatment device for recycling and treating wastewater according to claim 1, characterized in that: Two sets of moving slots (12) are provided on the other two sides of the processing box (1). The connecting block (9) passes through the moving slot (12) and slides with the moving slot (12).

4. The wastewater pretreatment device for recycling and treating wastewater according to claim 1, characterized in that: The drive frame (8) is located on the top of the processing box (1) and slides with the processing box (1). A movable seat (13) is fixedly installed in the middle of the top of the drive frame (8).

5. The wastewater pretreatment device for recycling and treating wastewater according to claim 4, characterized in that: The movable seat (13) is installed on the lead screw (14), and the two ends of the lead screw (14) are rotatably installed on the inner side of the first mounting seat (15), which is fixedly installed on the top of the processing box (1).

6. The wastewater pretreatment device for recycling and treating wastewater according to claim 5, characterized in that: A motor (16) is fixedly installed on the outside of the first mounting base (15), and the output end of the motor (16) is connected to one end of the lead screw (14) for transmission.

7. The wastewater pretreatment device for recycling and treating wastewater according to claim 6, characterized in that: Two sets of guide rods (17) are provided on both sides of the lead screw (14), and the two ends of the guide rods (17) are fixedly connected to the top surface of the processing box (1) through the second mounting base (18).

8. The wastewater pretreatment device for recycling and treating wastewater according to claim 7, characterized in that: The guide rod (17) is slidably mounted with a guide seat (19), and the guide seat (19) is fixedly connected to the drive frame (8).

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