Domestic sewage treatment equipment with grid structure

Abstract

The utility model relates to the technical field of sewage treatment, and discloses domestic sewage treatment equipment with a grating structure, which comprises a grating frame arranged in a sewage pool, a driving shaft, a steering shaft and a driven shaft are rotationally arranged in the grating frame, and a grating net is arranged on the driving shaft, the steering shaft and the driven shaft in a transmission manner. A fishing hook is mounted on the outer side of the grating net; the grating net is divided into a sundry conveying area and a sundry throwing area, a carding plate located on the lower portion of the sundry throwing area is installed on the upper portion of the grating frame, and a plurality of carding grooves matched with the fishing hooks are formed in one side of the carding plate. A carding plate is arranged between the two grating plates, a carding groove is formed between the carding plates, when the grating net drives the fishing hook to move into the carding groove, sundries clamped on the fishing hook or sundries hung on the fishing hook can be removed through the carding groove, the situation that the sundries are clamped or hung on the fishing hook for a long time is avoided, and the service life of the fishing hook is prolonged. Therefore, the condition that the fishing hook is damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a domestic wastewater treatment device with a bar screen structure. Background Technology

[0002] Rotary bar screens, also known as rotating bar screen cleaners, are devices that can continuously and automatically intercept and remove various larger solid impurities in sewage. They are currently widely used in pre-pump cleaning at urban sewage stations and sewage treatment plants.

[0003] When filtering wastewater, rotary bar screens are typically used. These screens not only filter solid debris but also retrieve the filtered debris, replacing traditional manual retrieval methods. Currently, when the retrieved debris is placed into the basket by the rotary bar screen, it usually falls into the basket due to its own gravity. However, during the retrieval or transport of debris by the hooks, the debris may get stuck between adjacent hooks, caught on or adhere to the hooks. When the debris moves from the top of the basket and comes into contact with the filtered water, it may detach from the hooks and mix with the filtered water, resulting in incomplete filtration.

[0004] Therefore, we propose a domestic sewage treatment device with a bar screen structure to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a domestic sewage treatment device with a bar screen structure, comprising a bar screen frame installed in a sewage tank, wherein a drive shaft, a steering shaft, and a driven shaft are rotatably installed inside the bar screen frame, and a bar screen for filtering debris in the sewage tank is driven and installed on the drive shaft, steering shaft, and driven shaft, and a hook for retrieval of the filtered debris is installed on the outside of the bar screen; the bar screen is divided into a debris conveying area and a debris disposal area, and a combing plate located below the debris disposal area is installed on the upper part of the bar screen frame, and a plurality of combing grooves adapted to the hooks are opened on one side of the combing plate, the combing grooves being used to remove debris stuck on the hooks.

[0007] Furthermore: the grid frame includes two parallel grid plates, and a plurality of parallel fixing rods are fixed between the two grid plates, with the same support base fixed to the upper part of the two fixing rods.

[0008] Furthermore: a drive source is installed on the top of the support base, a drive gear is fixed at the output end of the drive source, a driven gear is installed on the drive gear through chain drive, and the driven gear is fixed at the end of the drive shaft.

[0009] Furthermore: the end of the combing groove near the drive shaft is higher; the end of the combing groove near the steering shaft is lower.

[0010] Furthermore, an arc-shaped support plate is fixed at the corner of the inner wall of the grating plate to support the grating mesh.

[0011] Furthermore, the outer wall of the grating is fixed with a fixing bracket, and the fixing bracket is connected to the edge of the sewage tank by fixing bolts.

[0012] Furthermore: several transmission gears are fixed on the drive shaft, and the transmission gears are connected to the grid mesh for transmission.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a combing plate between two grating plates and combing grooves between the combing plates. When the grating mesh moves the hook into the combing groove, the combing groove can remove debris stuck, hanging, or stuck on the hook, thus avoiding the phenomenon of incompletely disposed debris coming into contact with and mixing with the filtered water, thereby improving the effect of sewage treatment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention (including a sewage tank);

[0016] Figure 2 This is a front view structural diagram of the present invention (excluding the sewage tank).

[0017] Figure 3 This is a three-dimensional structural diagram of the sewage tank in this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the combing plate in this utility model;

[0019] Figure 5 This is a partial structural schematic diagram of the grid mesh and combing plate in this utility model.

[0020] The names corresponding to each mark in the diagram:

[0021] 1. Sewage tank; 2. Bar frame; 201. Bar plate; 202. Fixing rod; 203. Support base; 3. Drive shaft; 301. Transmission gear; 4. Steering shaft; 5. Driven shaft; 6. Bar mesh; 7. Hook; 8. Combing plate; 9. Combing groove; 10. Drive source; 11. Drive gear; 12. Chain; 13. Driven gear; 14. "Arc" shaped support plate; 15. Fixed bracket. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0023] A wastewater treatment device with a bar screen structure includes a wastewater tank 1, inside which a bar screen frame 2 is installed. Specifically, the bar screen frame 2 includes two parallel bar screens 201, with several parallel fixing rods 202 fixed between the two bar screens 201. The fixing rods 202 secure the two bar screens 201. A fixing bracket 15 is fixed to the outer side of each bar screen 201, and fixing bolts pass through the fixing brackets and are fixedly connected to the edge of the wastewater tank 1, thereby tightening the bar screen frame 2 and preventing it from shaking or loosening during use. A common support base 203 is installed above the two bar screens 201; the support base 203 is used to install a drive source 10.

[0024] A drive shaft 3, a steering shaft 4, and a driven shaft 5 are rotatably mounted between the two grating plates 201. It should be noted that multiple driven shafts 5 can be used, and the axes of these multiple driven shafts 5 and the steering shaft 4 are located on the same vertical or inclined line. The multiple driven shafts 5 provide support for the grating mesh 6. The steering shaft 4 provides steering for the grating mesh 6. The axes of the drive shaft 3 and the steering shaft 4 are located on the same horizontal line, and several transmission gears 301 are equidistantly fixed on the drive shaft 3. These transmission gears 301 are respectively connected to the grating mesh 6. The cooperation of the drive shaft 3 and the transmission gears 301 drives the grating mesh 6. The same grating mesh 6 is mounted on the drive shaft 3, steering shaft 4, and multiple driven shafts 5, thus filtering impurities from the wastewater.

[0025] This serves to treat wastewater;

[0026] It should be noted that: several rows of hooks 7 are fixed on the grid 6. When the hooks 7 move upward, they can retrieve the screened debris and prevent the debris from clogging the grid. This replaces the traditional manual retrieval method, reduces the workload of the staff, and provides convenience for the staff.

[0027] It should be noted that an arc-shaped support plate 14 is fixed at the corner of the inner wall of the grating plate 201. The arc-shaped support plate 14 serves to support the grating mesh 6 and prevent slippage caused by excessive wrap angle between the grating mesh 6 and the drive shaft 3, thereby improving the stability of the device.

[0028] A drive source 10 is installed on the top of the support base 203. The drive source 10 is a motor, and the output shaft of the drive source 10 is fixed with a drive gear 11. The drive gear 11 is driven by a driven gear 13 through a chain 12. The driven gear 13 is fixed to the end of the drive shaft 3. Through the cooperation of the drive gear 11, the chain 12 and the driven gear 13, power is provided to the drive shaft 3, which enables the packaging device to operate normally.

[0029] It should be noted that: the grid 6 located between the driven shaft 5 and the steering shaft 4 at the bottom is the debris conveying area a; the debris conveying area a is used to retrieve the debris after screening; the grid 6 located below the drive shaft 3 and the steering shaft 4 is the debris disposal area b; the debris disposal area b is used to dispose of the retrieved debris into a basket (not shown in the figure). The basket is usually installed directly below the debris disposal area b; a common combing plate 8 is installed between the two grid plates 201. In detail, side plates 801 are fixed on both sides of the combing plate 8, and the side plates 801 are fixed to the bottom of the grid plate 201. This serves to fix the combing plate 8. Several combing grooves 9 are provided on one side of the combing plate 8. Through the setting of the combing grooves 9, the debris stuck, hanging, or stuck on the hooks 7 can be removed. More specifically: the end of the combing groove 9 near the drive shaft 3 is higher; if the grid 6 drives several hooks 7 to the position of the combing plate 8, the root of the hooks 7 can move into the interior of the combing groove 8; the end of the combing groove 9 near the steering shaft 4 gradually becomes lower, and the hooks 7 continuously move horizontally at the position of the debris delivery area b. The debris stuck, hanging, or stuck on the hooks 7 can be removed through the combing grooves 9.

[0030] When domestic sewage is discharged into the sewage tank 1, as the sewage flows, the impurities in the sewage can be filtered through the bar screen 6, thereby achieving solid-liquid separation of the sewage.

[0031] As the bar screen 6 filters wastewater over a long period, blockages inevitably occur. At this time, the drive source 10 can be turned on, causing the drive gear 11 to rotate. The drive gear 11, through the chain 12, drives the driven gear 13 to rotate. The driven gear 13, through the drive shaft 3, drives several transmission gears 301 to rotate. These transmission gears 301 drive the bar screen 6, which in turn drives several hooks 7 to rotate and remove the screened debris, preventing blockages. When the bar screen 6, driven by the hooks 7, reaches the debris disposal area b, the hooks 7 move into the combing trough 9. As the combing trough 9 continuously lowers from one end to the other, it removes debris stuck, hanging, or adhering to the hooks 7, preventing incomplete removal of debris from contacting and mixing with the filtered water, thus improving the wastewater treatment effect.

Claims

1. A domestic sewage treatment device with a bar screen structure, comprising a bar screen frame (2) installed in a sewage tank (1), wherein a drive shaft (3), a steering shaft (4), and a driven shaft (5) are rotatably mounted inside the bar screen frame (2), and a bar screen (6) for filtering debris in the sewage tank (1) is installed on the drive shaft (3), the steering shaft (4), and the driven shaft (5), and a hook (7) for retrieval of the filtered debris is installed on the outside of the bar screen (6); characterized in that: The grid (6) is divided into a debris conveying area (a) and a debris delivery area (b). A combing plate (8) located at the lower part of the debris delivery area (b) is installed on the upper part of the grid frame (2). A number of combing grooves (9) adapted to the hook (7) are opened on one side of the combing plate (8). The combing grooves (9) are used to remove debris stuck on the hook (7).

2. A domestic sewage treatment device with a bar screen structure according to claim 1, characterized in that: The grid frame (2) includes two parallel grid plates (201), and a number of parallel fixing rods (202) are fixed between the two grid plates (201). The upper part of the two fixing rods (202) is fixed with the same support base (203).

3. A domestic sewage treatment device with a bar screen structure according to claim 2, characterized in that: A drive source (10) is installed on the top of the support base (203). A drive gear (11) is fixed at the output end of the drive source (10). A driven gear (13) is installed on the drive gear (11) through a chain (12). The driven gear (13) is fixed at the end of the drive shaft (3).

4. A domestic sewage treatment device with a bar screen structure according to claim 3, characterized in that: The combing groove (9) is higher at the end near the drive shaft (3); the combing groove (9) is lower at the end near the steering shaft (4).

5. A domestic sewage treatment device with a bar screen structure according to claim 4, characterized in that: An arc-shaped support plate (14) for supporting the grid mesh (6) is fixed at the corner of the inner wall of the grid plate (201).

6. A domestic sewage treatment device with a bar screen structure according to claim 5, characterized in that: The outer wall of the grating plate (201) is fixed with a fixing bracket (15), and the fixing bracket (15) is connected to the edge of the sewage tank (1) by fixing bolts.

7. A domestic sewage treatment device with a bar screen structure according to claim 6, characterized in that: Several transmission gears (301) are fixed on the drive shaft (3), and the transmission gears (301) are connected to the grid mesh (6) for transmission.

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