Sewage lifting tank body anti-deposition structure with self-cleaning function

Abstract

The utility model relates to sewage lifting equipment technical field, concretely relates to a sewage lifting tank body anti deposition structure with self -cleaning function, including the box, set up in the water pump of box, and the water suction pipeline that connects with the water inlet of water pump, and set up in the electric control assembly for control outside box, still including set up in the injection turbulence subassembly of box, bottom cleaning subassembly, the injection turbulence subassembly includes the backflow injection pipe that communicates with the water outlet of water pump, backflow injection pipe is located the inside of box and is equipped with the injection port towards the bottom deposition area of box, bottom cleaning subassembly includes the drive mechanism that sets up in the bottom of box and is driven to scrape and sweep movement by the scraper, the junction of the bottom surface of box and lateral wall is equipped with arc chamfer or inclined plane chamfer, the utility model discloses through the structure optimization and intelligent control, has realized the active removal and automatic cleaning of sewage lifting tank body bottom deposit, is applicable to all kinds of low-lying area sewage lifting scene.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage lifting equipment, specifically to a sewage lifting tank anti-deposition structure with self-cleaning function. Background Technology

[0002] Wastewater lifting tanks are one of the core pieces of equipment in wastewater treatment systems. Their main function is to collect wastewater from low-lying areas or basements and pump it to the municipal sewer network or treatment facilities. If wastewater is stored inside the tank for a long time, sludge, debris, and other sediments are easily formed due to gravity settling. On the one hand, sediments reduce the effective volume of the tank, lowering the equipment's processing capacity; on the other hand, sediments may clog the pump impeller or pipes, leading to equipment malfunctions or even damage, affecting the long-term stable operation of the system.

[0003] In existing technologies, the anti-deposition measures of sewage lifting tanks mostly rely on the suction effect of water pumps, lacking a coordinated design of active turbulence and mechanical cleaning, resulting in incomplete removal of sediments; although some structures are equipped with turbulence devices, the turbulence direction is unidirectional and cannot cover the entire area at the bottom of the tank (such as corners and edges), resulting in cleaning dead spots; in addition, the cleaning process requires manual intervention, with low automation, making it difficult to meet the needs of unattended scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater lifting tank anti-deposition structure with self-cleaning function. Through the synergistic effect of jet turbulence and mechanical scraping, it can actively remove the sediment at the bottom of the tank. At the same time, it optimizes the tank structure and control logic to improve the automation level and operational stability of the equipment.

[0005] The technical solution provided by this utility model is a sewage lifting tank anti-deposition structure with self-cleaning function, including a tank, a water pump installed in the tank, a water suction pipe connected to the water pump inlet, and an electrical control component installed on the outside of the tank for control, and also includes a jet turbulence component and a bottom cleaning component installed in the tank.

[0006] The jet turbulence assembly includes a return jet pipe connected to the water pump outlet. The return jet pipe is located inside the tank and has a jet outlet facing the sedimentation area at the bottom of the tank.

[0007] The bottom cleaning assembly includes a drive mechanism located at the bottom of the housing and a scraper driven by the drive mechanism to perform a scraping motion.

[0008] The bottom surface of the box is provided with an arc-shaped chamfer or a beveled chamfer at the connection between the side wall and the bottom surface.

[0009] As a preferred technical solution of this utility model, the driving mechanism is a waterproof servo motor or stepper motor, and its output shaft is directly or through a reducer connected to a rotating shaft located at the center of the bottom of the housing. The scraper is fixedly installed on the rotating shaft at equal angles along the circumference.

[0010] As a preferred technical solution of this utility model, the scraping trajectory of the scraper covers the central area of ​​the bottom surface of the box, the length of the scraper is greater than or equal to 2 / 3 of the radius of the box, and the lower edge of the scraper is provided with a detachable flexible scraper strip that abuts against the bottom of the box.

[0011] As a preferred embodiment of this utility model, the electronic control component includes a controller with a display function. The controller is electrically connected to the water pump, the drive mechanism, and the corrosion-resistant solenoid valve disposed on the return jet pipe. The controller is configured to control the water pump and the drive mechanism to start synchronously or in a preset sequence and control the solenoid valve to open when the self-cleaning program is executed.

[0012] As a preferred technical solution of this utility model, the bottom surface of the box is a conical surface or inclined surface that is inclined towards the center, and the arc-shaped chamfer or inclined chamfer smoothly connects the inclined bottom surface and the side wall.

[0013] As a preferred embodiment of this utility model, the return jet pipe extends along the edge contour of the bottom of the housing and is positioned above the arc-shaped chamfer or beveled chamfer.

[0014] As a preferred technical solution of this utility model, the spray nozzle includes two parts: one part is vertically downward toward the arc-shaped chamfer or beveled chamfer area, and the other part is inclined downward at 60° relative to the bottom of the box and toward the center area of ​​the bottom surface of the box.

[0015] As a preferred technical solution of this utility model, a liquid level sensor is provided inside the box. The liquid level sensor is communicatively connected to the electronic control component and is used to prohibit or suspend the start-up operation of the bottom cleaning component and the water pump when the liquid level inside the box is lower than the safety threshold.

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] 1. Active anti-deposition: The jet turbulence component forms a directional water flow (vertically downward + 60° tilt) through backflow jetting, disturbing the bottom sediment, disrupting its stable state, and preventing accumulation;

[0018] 2. High-efficiency mechanical cleaning: The scraper of the bottom cleaning component has a large coverage area (length ≥ 2 / 3 of radius), and the flexible scraper can effectively scrape away deposits without damaging the tank. The detachable design makes maintenance convenient.

[0019] 3. Structural optimization reduces dead corners: The combination of the conical surface of the tank bottom and the arc / sloping chamfer causes sediment to accumulate towards the edge, making it easier to be scraped and washed away by water flow;

[0020] 4. Safety protection: The liquid level sensor monitors the liquid level in real time to prevent the cleaning or water pump from starting when the liquid level is too low, thus avoiding damage to the equipment from dry pumping.

[0021] 5. Comprehensive turbulence design: The return jet pipe is arranged along the bottom edge contour, and the jet nozzle covers the chamfered area and the center area to enhance the turbulence effect. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a wastewater lifting tank with self-cleaning function to prevent sedimentation, according to the present invention.

[0023] Figure 2 This is a cross-sectional three-dimensional structural view of a sewage lifting tank with self-cleaning function and anti-deposition structure according to the present invention.

[0024] Figure 3 This is a longitudinal cross-sectional three-dimensional structural diagram of a sewage lifting tank with self-cleaning function and anti-deposition structure according to the present invention.

[0025] Figure 4 This is a three-dimensional enlarged view of the spray nozzle of the return spray pipe at point A of the anti-deposition structure of the sewage lifting box with self-cleaning function according to this utility model.

[0026] As shown in the figure:

[0027] 1. Housing; 2. Water pump; 3. Suction pipe; 4. Electrical control components; 5. Return spray pipe; 6. Spray nozzle; 7. Drive mechanism; 8. Scraper; 9. Chamfered corner; 10. Rotating shaft; 11. Flexible scraper; 12. Solenoid valve; 13. Liquid level sensor. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1:

[0031] As per the instruction manual Figure 1-4 As shown, the present invention provides a sewage lifting tank anti-deposition structure with self-cleaning function, including a tank body 1, a water pump 2, a water suction pipe 3, an electrical control component 4, a jet turbulence component and a bottom cleaning component.

[0032] In this utility model, the bottom surface of the box 1 is a conical surface that is inclined towards the center, and an arc-shaped chamfer 9 is provided at the connection between the bottom surface and the side wall to reduce the corner where the sediment is retained.

[0033] In this invention, the return jet pipe 5 of the jet turbulence assembly has a ring structure, which is connected to the outlet of the water pump 2 via a multi-branch connecting pipe 14. The solenoid valve 12 is located between the branch end of the connecting pipe and the outlet of the water pump. The return jet pipe 5 is located inside the housing 1, extending along the bottom edge contour of the housing 1, and is located above the arc-shaped chamfer 9. The return jet pipe 5 is provided with multiple jet nozzles 6, among which the vertically downward jet nozzles 6 spray water towards the area of ​​the arc-shaped chamfer 9, disturbing the sediment in this area; the 60° inclined jet nozzles 6 spray water towards the center area of ​​the bottom surface inside the housing 1, forming a radial water flow, which drives the sediment to flow.

[0034] In this invention, the drive mechanism 7 of the bottom cleaning component is a waterproof servo motor, located at the bottom of the housing 1. Its output shaft is connected to a rotating shaft 10 (vertically positioned at the center of the bottom of the housing 1) via a reducer. Six scrapers 8 are evenly distributed around the rotating shaft 10, with each scraper 8 having a length greater than 2 / 3 of the radius of the housing 1, ensuring that the scraping trajectory covers the central area. A detachable flexible scraper strip 11 (rubber material) at the lower edge of the scraper 8 abuts against the bottom of the housing 1 to prevent scratches.

[0035] In this invention, the electrical control component 4 is a controller with a display function, and is electrically connected to the water pump 2, the drive mechanism 7, the solenoid valve 12, and the liquid level sensor 13 (located on the lower side wall of the housing 1). When the liquid level is below the safety threshold, the controller prevents the water pump 2 and the drive mechanism 7 from starting; when the self-cleaning program is started, the controller controls the opening and closing of the water pump 2, the drive mechanism 7, and the solenoid valve 12.

[0036] Example 2:

[0037] The difference between this embodiment and embodiment 1 is that the bottom surface of the box 1 is a slope (tilted 15° towards the center), and the arc chamfer 9 is replaced with a slope chamfer (60° angle with the bottom surface). The rest of the structure is the same as that of embodiment 1.

[0038] Working principle

[0039] 1. Normal drainage process

[0040] Water pump 2 starts, pumping out the sewage from tank 1; at this time, the controller controls solenoid valve 12 to open, and the water from water pump 2 flows back to the bottom of tank 1 through return jet pipe 5.

[0041] (1) The vertically downward jet nozzle 6 scours the area of ​​the arc-shaped chamfer 9, disrupting the stability of the corner deposits;

[0042] (2) The 45° inclined jet nozzle 6 washes the central area, forming a ring-shaped water flow to prevent central sedimentation.

[0043] 2. Self-cleaning process

[0044] (1) Linked cleaning mode: After the water pump 2 completes a drainage task, the controller synchronously starts the drive mechanism 7 and the solenoid valve 12. The servo motor of the drive mechanism 7 drives the rotating shaft 10 to rotate, and the scraper 8 rotates accordingly. The flexible scraper 11 scrapes the bottom sediment to the edge. At the same time, the water flow of the return spray pipe 5 washes away the scraped sediment. After running for 5 minutes, the servo motor and the solenoid valve 12 stop.

[0045] (2) Regular cleaning mode: When the water pump 2 has not been started for a long time (such as more than 7 days), the controller will perform a complete cleaning process once a week (same as the linkage mode) to ensure that there are no deposits at the bottom of the tank 1.

[0046] (3) Inching cleaning mode: When local cleaning is required, send a command through the external button, and the controller will temporarily start the servo motor and solenoid valve 12 to run for 2 to 3 minutes to perform local agitation or cleaning.

[0047] 3. Liquid level protection

[0048] The liquid level sensor 13 monitors the liquid level inside the tank 1 in real time. When the liquid level is lower than 1 / 5 of the height of the tank 1, the controller sends a signal to prevent the water pump 2 and the servo motor from starting, so as to avoid dry pumping and damage to the equipment.

[0049] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A sedimentation prevention structure for a sewage lifting tank with self-cleaning function, comprising a tank (1), a water pump (2) disposed within the tank (1), a suction pipe (3) connected to the inlet of the water pump (2), and an electrical control component (4) disposed outside the tank (1) for control, characterized in that: It also includes a jet turbulence assembly and a bottom cleaning assembly installed inside the housing (1); The jet turbulence assembly includes a return jet pipe (5) connected to the outlet of the water pump (2). The return jet pipe (5) is located inside the tank (1) and is provided with a jet port (6) facing the bottom deposition area of ​​the tank (1). The bottom cleaning assembly includes a drive mechanism (7) disposed at the bottom of the housing (1) and a scraper (8) driven by the drive mechanism (7) to perform scraping motion; The bottom surface of the box (1) is provided with an arc-shaped chamfer (9) or a beveled chamfer at the connection between the side wall and the bottom surface.

2. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The drive mechanism (7) is a waterproof servo motor or stepper motor, and its output shaft is directly or through a reducer connected to a rotating shaft (10) located at the center of the bottom of the housing (1). The scraper (8) is fixedly installed on the rotating shaft (10) at equal angles along the circumference.

3. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 2, characterized in that: The scraping trajectory of the scraper (8) covers the central area of ​​the bottom surface of the box (1). The length of the scraper (8) is greater than or equal to 2 / 3 of the radius of the box (1), and the lower edge of the scraper (8) is provided with a detachable flexible scraper strip (11) that abuts against the bottom of the box (1).

4. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The electronic control component (4) includes a controller with a display function. The controller is electrically connected to the water pump (2), the drive mechanism (7), and the corrosion-resistant solenoid valve (12) disposed on the return jet pipe (5). The controller is configured to control the water pump (2) and the drive mechanism (7) to start synchronously or in a preset sequence and control the solenoid valve (12) to open when the self-cleaning program is executed.

5. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The bottom surface of the box (1) is a conical surface or inclined surface that is inclined towards the center, and the arc chamfer (9) or inclined chamfer smoothly connects the inclined bottom surface and the side wall.

6. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The return jet pipe (5) extends along the edge contour of the bottom of the box (1) and is arranged above the arc chamfer (9) or the bevel chamfer.

7. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The spray nozzle (6) comprises two parts: one part is vertically downward toward the arc-shaped chamfer (9) or the beveled chamfer area, and the other part is inclined downward at 60° relative to the bottom of the box (1) and toward the center area of ​​the inner bottom surface of the box (1).

8. The anti-deposition structure of a sewage lifting tank with self-cleaning function according to claim 1, characterized in that: The housing (1) is equipped with a liquid level sensor (13), which is connected in communication with the electronic control component (4) to prohibit or suspend the start-up operation of the bottom cleaning component and the water pump (2) when the liquid level inside the housing (1) is lower than the safety threshold.

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