A high-efficiency domestic wastewater treatment device

Abstract

The utility model discloses a kind of efficient domestic wastewater treatment devices, including fast mixing box and slow flocculation box, the slow flocculation box is fixed in the side of fast mixing box, and stirring assembly is installed between the fast mixing box and slow flocculation box.The utility model said a kind of efficient domestic wastewater treatment device, by the fast mixing box and slow flocculation box of being set, by the hierarchical control of "quick dispersion+slow growth", directly promote flocculation efficiency, reduce drug consumption, and create favorable conditions for subsequent sedimentation / separation unit, charge inorganic flocculants (such as PAC) in quick mixing chamber and neutralize charge, slow flocculation chamber adds organic macromolecular flocculants (such as PAM) and enhances bridging effect, avoid the failure of reagent competition caused by one-time addition.

Description

Technical Field

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

[0002] With the acceleration of urbanization and the increase in domestic water consumption, the problem of domestic wastewater treatment has become increasingly prominent. Traditional wastewater treatment devices usually adopt a single flocculation process, adding inorganic flocculants (such as PAC) and organic polymeric flocculants (such as PAM) into the same reaction tank at one time.

[0003] This approach has the following drawbacks:

[0004] 1. Competition among agents leads to failure: Adding multiple flocculants at once can cause competition between the agents, reducing the flocculation effect and increasing the cost of agent consumption;

[0005] 2. Low flocculation efficiency: A single stirring speed cannot simultaneously meet the flocculation requirements of rapid dispersion and slow growth, resulting in insufficient floc formation and poor settling performance.

[0006] 3. Difficulty in subsequent treatment: Insufficient flocculation will affect the effect of sedimentation or separation units, increase the burden of subsequent treatment, and even lead to substandard effluent quality.

[0007] Therefore, we propose a highly efficient domestic wastewater treatment device. Utility Model Content

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a highly efficient domestic wastewater treatment device. Through a graded control of "rapid dispersion + slow growth," it directly improves flocculation efficiency, reduces chemical consumption, and creates favorable conditions for subsequent sedimentation / separation units, effectively solving the problems in the background technology.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-efficiency domestic wastewater treatment device, comprising a rapid mixing tank and a slow flocculation tank, wherein the slow flocculation tank is fixed to one side of the rapid mixing tank, and a stirring assembly is installed between the rapid mixing tank and the slow flocculation tank. The stirring assembly includes a first transmission box, a first driven shaft, a second driven shaft, a rotating shaft, a worm gear, a driving gear, a first driven gear, a second driven gear, a stirrer, a spiral blade, a motor, a worm, and a second transmission box. A sewage pump is connected between the rapid mixing tank and the slow flocculation tank. A filling port is provided on one side of the upper outer surface of both the rapid mixing tank and the slow flocculation tank, and a drain valve is installed at the bottom of the front outer surface of the slow flocculation tank.

[0012] Preferably, the inlet of the sewage pump is located at the lower part of the rapid mixing tank, and the outlet is located at the upper part of the slow flocculation tank.

[0013] Preferably, there are two sets of agitators and two sets of spiral blades. The lower end of the first driven shaft extends into the interior of the rapid mixing chamber, and the lower end of the second driven shaft extends into the interior of the slow flocculation chamber. The two sets of agitators are fixedly installed on the outer wall of the middle part of the first driven shaft and the second driven shaft, and the two sets of spiral blades are fixedly installed on the outer wall of the bottom of the first driven shaft and the second driven shaft.

[0014] Preferably, the driving gear, the first driven gear, and the second driven gear are all located inside the first transmission box. The first driven gear is fixedly installed on the outer wall of the upper part of the first driven shaft, the second driven gear is fixedly installed on the outer wall of the upper part of the second driven shaft, and the driving gear is fixedly installed on the outer wall of the lower end of the rotating shaft. The outer surfaces of the driving gear mesh with the first and second driven gears. The worm gear is fixedly installed on the outer wall of the upper part of the rotating shaft. The second transmission box is fixedly installed in the middle of the upper outer surface of the first transmission box. The worm is located on one side of the outer surface of the worm gear. The motor is fixedly installed on one side of the front outer surface of the second transmission box. The worm and the motor are connected... A coupling is provided, and one end of the outer surface of the worm is fixedly connected to one end of the outer surface of the output shaft in the motor through the coupling. One side of the outer surface of the worm meshes with the worm wheel. A sealed bearing is provided between the worm and the second transmission box, and the worm is rotatably connected to the second transmission box through the sealed bearing. Sealed bearings are provided between the rotating shaft and both the second and first transmission boxes, and the rotating shaft is rotatably connected to both the second and first transmission boxes through the sealed bearings. Sealed bearings are provided between the first driven shaft and the second driven shaft and both the first and second driven shafts and the rapid mixing box, and the first and second driven shafts are rotatably connected to both the first transmission box and the rapid mixing box through the sealed bearings.

[0015] Preferably, the second driven gear meshing with the driving gear has more teeth than the first driven gear, and is used to drive the agitator mounted on the second driven shaft to reduce speed, and the ratio of the number of teeth of the first driven gear to the number of teeth of the second driven gear is 1:1.5~3.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a highly efficient domestic wastewater treatment device, which has the following beneficial effects:

[0018] 1. This high-efficiency domestic wastewater treatment device achieves a flocculation process of "rapid dispersion + slow growth" through a staged design of "rapid mixing tank + slow flocculation tank", which significantly improves flocculation efficiency. Inorganic flocculants (such as PAC) are added to the rapid mixing tank to quickly neutralize the charge and form micro flocs; organic polymeric flocculants (such as PAM) are added to the slow flocculation tank to enhance the bridging effect, promote floc growth, and avoid the failure of the flocculants due to competition. The staged addition of flocculants can accurately control the dosage of the flocculants and reduce waste.

[0019] 2. This efficient domestic wastewater treatment device has a more thorough flocculation process, resulting in dense flocs with good settling performance, which creates favorable conditions for subsequent sedimentation or separation units, reduces the treatment burden, and improves the quality of effluent.

[0020] 3. This efficient domestic wastewater treatment device, through a gear transmission design (the ratio of the number of teeth of the first driven gear to the second driven gear is 1:1.5~3), achieves automatic matching between high-speed stirring in the rapid mixing box and low-speed stirring in the slow flocculation box, ensuring excellent flocculation effect.

[0021] 4. This efficient domestic wastewater treatment device is equipped with a stirring component with spiral blades, which can turn the sediment at the bottom of the tank upwards, avoid dead corners, improve mixing uniformity, and further enhance the flocculation effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency domestic wastewater treatment device according to the present invention.

[0023] Figure 2 This is a partial structural schematic diagram of a high-efficiency domestic wastewater treatment device according to the present invention.

[0024] Figure 3 This is a partial side cross-sectional view of a high-efficiency domestic wastewater treatment device according to the present invention.

[0025] Figure 4 This is a top cross-sectional view of the second transmission box in a high-efficiency domestic wastewater treatment device of this utility model.

[0026] In the diagram: 1. Rapid mixing tank; 2. Slow flocculation tank; 3. Injection port; 4. Agitator assembly; 5. Sewage pump; 6. Drain valve; 7. First transmission box; 8. First driven shaft; 9. Second driven shaft; 10. Rotating shaft; 11. Worm gear; 12. Drive gear; 13. First driven gear; 14. Second driven gear; 15. Agitator; 16. Spiral blade; 17. Motor; 18. Worm; 19. Second transmission box. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] This embodiment is a highly efficient domestic wastewater treatment device.

[0029] like Figure 1-4 As shown, the system includes a rapid mixing tank 1 and a slow flocculation tank 2. The slow flocculation tank 2 is fixed to one side of the rapid mixing tank 1, and a stirring assembly 4 is installed between the rapid mixing tank 1 and the slow flocculation tank 2. The stirring assembly 4 includes a first transmission box 7, a first driven shaft 8, a second driven shaft 9, a rotating shaft 10, a worm gear 11, a driving gear 12, a first driven gear 13, a second driven gear 14, a stirrer 15, a spiral blade 16, a motor 17, a worm gear 18, and a second transmission box 19. A sewage pump 5 is connected between the rapid mixing tank 1 and the slow flocculation tank 2. A filling port 3 is opened on one side of the upper outer surface of both the rapid mixing tank 1 and the slow flocculation tank 2. A drain valve 6 is installed at the bottom of the front outer surface of the slow flocculation tank 2.

[0030] The inlet of the sewage pump 5 is located at the lower part of the rapid mixing tank 1, and the outlet is located at the upper part of the slow flocculation tank 2. There are two sets of agitators 15 and two sets of spiral blades 16. The lower end of the first driven shaft 8 extends into the interior of the rapid mixing tank 1, and the lower end of the second driven shaft 9 extends into the interior of the slow flocculation tank 2. The two sets of agitators 15 are fixedly installed on the outer wall of the middle part of the first driven shaft 8 and the second driven shaft 9, and the two sets of spiral blades 16 are fixedly installed on the outer wall of the bottom of the first driven shaft 8 and the second driven shaft 9. The drive gear 12, the first driven gear 13, and the second driven gear 14 are all located in the first transmission box 7. Inside, the first driven gear 13 is fixedly installed on the outer wall of the upper part of the first driven shaft 8, the second driven gear 14 is fixedly installed on the outer wall of the upper part of the second driven shaft 9, the driving gear 12 is fixedly installed on the outer wall of the lower end of the rotating shaft 10, and the outer surfaces of both sides of the driving gear 12 mesh with the first driven gear 13 and the second driven gear 14. The worm gear 11 is fixedly installed on the outer wall of the upper part of the rotating shaft 10. The second transmission box 19 is fixedly installed in the middle of the upper outer surface of the first transmission box 7. The worm 18 is located on one side of the outer surface of the worm gear 11. The motor 17 is fixedly installed at the front end of the second transmission box 19. On one side of the outer surface, a coupling is provided between the worm 18 and the motor 17. One end of the outer surface of the worm 18 is fixedly connected to one end of the outer surface of the output shaft of the motor 17 through the coupling. One side of the outer surface of the worm 18 meshes with the worm wheel 11. A sealed bearing is provided between the worm 18 and the second transmission box 19. The worm 18 is rotatably connected to the second transmission box 19 through the sealed bearing. Sealed bearings are provided between the rotating shaft 10 and both the second transmission box 19 and the first transmission box 7. The rotating shaft 10 is rotatably connected to both the second transmission box 19 and the first transmission box 7 through the sealed bearings. The first driven shaft 8... Sealed bearings are provided between the second driven shaft 9 and the first transmission box 7 and the rapid mixing box 1. The first driven shaft 8 and the second driven shaft 9 are rotatably connected to the first transmission box 7 and the rapid mixing box 1 through sealed bearings. The second driven gear 14, which meshes with the driving gear 12, has more teeth than the first driven gear 13. It is used to drive the agitator 15 installed on the second driven shaft 9 to reduce speed. The ratio of the number of teeth of the first driven gear 13 to the number of teeth of the second driven gear 14 is 1:1.5~3. The inlet of the sewage pump 5 is located at the lower part of the rapid mixing box 1, and the outlet is located at the upper part of the slow flocculation box 2.

[0031] It should be noted that this utility model is a high-efficiency domestic wastewater treatment device. The second driven gear 14, which meshes with the driving gear 12, has more teeth than the first driven gear 13. It is used to drive the agitator 15 mounted on the second driven shaft 9 to achieve speed reduction. The tooth ratio of the first driven gear 13 to the second driven gear 14 is 1:1.5~3. The operation of the motor 17 drives the worm 18 to rotate, which in turn drives the worm wheel 11 to rotate. The worm wheel 11 drives the driving gear 12 to rotate via the rotating shaft 10. The driving gear 12 drives the first driven gear 13 on both sides to rotate. The second driven gear 14 rotates, thereby driving the first driven shaft 8 and the second driven shaft 9 to rotate. The first driven shaft 8 and the second driven shaft 9 drive the agitator 15 and the spiral blade 16 to rotate, thereby agitating the materials inside the rapid mixing tank 1 and the slow flocculation tank 2. The spiral blade 16 facilitates the turning over of the materials at the bottom of the tank, improving the quality of the mixture. The inlet of the sewage pump 5 is located at the bottom of the rapid mixing tank 1, and the outlet is located at the top of the slow flocculation tank 2, which facilitates the delivery of the sewage treated by the rapid mixing tank 1 into the slow flocculation tank 2 for "slow growth".

[0032] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-efficiency domestic wastewater treatment device, comprising a rapid mixing tank (1) and a slow flocculation tank (2), characterized in that: The slow flocculation box (2) is fixed to one side of the fast mixing box (1), and a stirring assembly (4) is installed between the fast mixing box (1) and the slow flocculation box (2). The stirring assembly (4) includes a first transmission box (7), a first driven shaft (8), a second driven shaft (9), a rotating shaft (10), a worm gear (11), a driving gear (12), a first driven gear (13), a second driven gear (14), a stirrer (15), a spiral blade (16), a motor (17), a worm (18), and a second transmission box (19). A sewage pump (5) is connected between the fast mixing box (1) and the slow flocculation box (2). A filling port (3) is opened on one side of the upper outer surface of both the fast mixing box (1) and the slow flocculation box (2). A drain valve (6) is installed at the bottom of the front outer surface of the slow flocculation box (2).

2. The efficient domestic wastewater treatment device according to claim 1, characterized in that: The inlet of the sewage pump (5) is located at the bottom of the rapid mixing tank (1), and the outlet is located at the top of the slow flocculation tank (2).

3. The efficient domestic wastewater treatment device according to claim 2, characterized in that: The number of agitators (15) and spiral blades (16) are two sets. The lower end of the first driven shaft (8) extends into the interior of the rapid mixing chamber (1), and the lower end of the second driven shaft (9) extends into the interior of the slow flocculation chamber (2). The two sets of agitators (15) are fixedly installed on the outer wall of the middle part of the first driven shaft (8) and the second driven shaft (9), and the two sets of spiral blades (16) are fixedly installed on the outer wall of the bottom of the first driven shaft (8) and the second driven shaft (9).

4. The efficient domestic wastewater treatment device according to claim 3, characterized in that: The driving gear (12), the first driven gear (13), and the second driven gear (14) are all located inside the first transmission box (7). The first driven gear (13) is fixedly installed on the outer wall of the upper part of the first driven shaft (8), and the second driven gear (14) is fixedly installed on the outer wall of the upper part of the second driven shaft (9). The driving gear (12) is fixedly installed on the outer wall of the lower end of the rotating shaft (10), and the outer surfaces of both sides of the driving gear (12) mesh with the first driven gear (13) and the second driven gear (14). The worm gear (11) is fixedly installed on the outer wall of the upper part of the rotating shaft (10). The second transmission box (19) is fixedly installed in the middle of the upper outer surface of the first transmission box (7). The worm (18) is located on one side of the outer surface of the worm gear (11). The motor (17) is fixedly installed on one side of the front end outer surface of the second transmission box (19). The worm (18) and the motor (17) A coupling is provided between the worm (18) and the second transmission box (19). The outer surface of one end of the worm (18) is fixedly connected to the outer surface of one end of the output shaft of the motor (17) through the coupling. The outer surface of one side of the worm (18) meshes with the worm wheel (11). A sealed bearing is provided between the worm (18) and the second transmission box (19). The worm (18) is rotatably connected to the second transmission box (19) through the sealed bearing. A sealed bearing is provided between the rotating shaft (10) and the second transmission box (19) and the first transmission box (7). The rotating shaft (10) is rotatably connected to the second transmission box (19) and the first transmission box (7) through the sealed bearing. A sealed bearing is provided between the first driven shaft (8) and the second driven shaft (9) and the first transmission box (7) and the rapid mixing box (1). The first driven shaft (8) and the second driven shaft (9) are rotatably connected to the first transmission box (7) and the rapid mixing box (1) through the sealed bearing.

5. The efficient domestic wastewater treatment device according to claim 4, characterized in that: The second driven gear (14) meshes with the driving gear (12) and has more teeth than the first driven gear (13). It is used to drive the stirrer (15) mounted on the second driven shaft (9) to reduce speed. The ratio of the number of teeth of the first driven gear (13) to the number of teeth of the second driven gear (14) is 1:1.5~3.

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