Sewage treatment tank

Abstract

The utility model discloses a sewage treatment tank, which belongs to the technical field of sewage treatment and comprises a sedimentation tank, an overflow tank is integrally arranged on the periphery of the sedimentation tank, the overflow tank is obliquely arranged, an overflow port is arranged at the lowest point of the overflow tank in a penetrating manner, and a transverse ladder is mounted above an island column in the middle of the sedimentation tank. A flocculating agent barrel is installed below the transverse ladder through a hoop, a liquid outlet pipe is arranged at an outlet of the flocculating agent barrel in a matched mode, a water inlet groove is formed in one side of the sedimentation tank in an embedded mode, the upper edge of the water inlet groove is rotationally connected with a rotating column through a bearing, and paddle plates are arranged on the periphery of the outer portion of the rotating column in an array mode. According to the design, the flocculating agent barrel is mounted at the transverse ladder, so that the flocculating agent is subjected to the action of atmospheric pressure and the action of self gravity, the flocculating agent has pressure, then the flocculating agent is quantitatively matched with quantitative feeding and extrusion between the extrusion head and the hose, the internal space of the hose can be reduced, and furthermore, the internal space of the hose is reduced. And the flow of the flocculating agent is controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment tank. Background Art

[0002] In sewage treatment, primary sewage treatment is carried out first: coarse grid and fine grid filtration treatment, grit chamber, sedimentation tank, flotation tank, regulation tank;

[0003] A sedimentation tank is a structure that uses sedimentation to remove suspended solids in water, a device for purifying water quality. It utilizes the natural sedimentation or coagulation sedimentation of water to remove suspended solids in water. The sedimentation effect depends on the flow rate of water in the sedimentation tank and the residence time of water in the tank.

[0004] Therefore, in order to increase the sedimentation speed of the sedimentation tank, it is generally necessary to add a coagulant or a flocculant into the sedimentation tank, so that the impurities in the water body aggregate into a mass, and then precipitate to the bottom of the tank. The upper clear liquid overflows into the overflow tank through the upper edge and proceeds to the next operation.

[0005] The existing method for the dosing of the flocculant is quantitative intelligent dosing, that is, a certain amount of flocculant is regularly put into the sedimentation tank, and then the flocculant is stirred to flocculate with the suspended solids into a mass; and this kind of facility has the following defects. As we all know, our water consumption at night is relatively small, and the water consumption during the day is relatively large. This makes the amount of sewage received by the sewage treatment plant relatively small at night and relatively large during the day. Therefore, the quantitative dosing method will cause the incomplete operation of the flocculant and result in waste. Therefore, it is more important to design a device that can perform intelligent dosing according to the water flow rate. Content of the Utility Model

[0006] The purpose of the utility model is to provide a sewage treatment tank in order to solve the above problems.

[0007] The technical scheme adopted by the utility model is as follows: A sewage treatment tank includes a sedimentation tank. An overflow tank is integrally arranged around the sedimentation tank, and the overflow tank is inclined. An overflow port penetrates through the lowest point of the overflow tank. A cross ladder is installed above the central island column of the sedimentation tank;

[0008] A flocculant barrel is installed under the cross ladder through a hoop, and a liquid outlet pipe is provided at the outlet of the flocculant barrel;

[0009] An inlet trough is embedded on one side of the sedimentation tank. A rotating column is rotatably connected to the upper edge of the inlet trough through a bearing. A plurality of paddle plates are arranged in an array around the outer circumference of the rotating column. A speed increaser and a generator are installed on one side edge of the inlet trough. The output shaft of the speed increaser is connected to the rotor shaft of the generator;

[0010] A mixing mechanism capable of adding flocculant to the water body and stirring is provided at the lower edge of the water inlet tank;

[0011] The mixing mechanism includes: a hollow column, a stirring column, a fixed column, and a sealing plate. The hollow column is rotatably connected to the lower edge of the water inlet tank. Stirring columns extend around the hollow column. A fixed column is fixedly installed on the inner wall of the water inlet tank near the hollow column, and there is a sealing plate in the middle of the fixed column;

[0012] A control mechanism capable of controlling the release of flocculant according to the size of the water flow is provided in the middle of the liquid outlet pipe;

[0013] The control mechanism includes: a protective shell, a spring telescopic rod, an extrusion head, and a permanent magnet;

[0014] A protective shell is installed on the outside of the liquid outlet pipe through a hoop. A hose is embedded in the part of the liquid outlet pipe wrapped inside the protective shell. An extrusion head is installed in the protective shell through a spring telescopic rod. A permanent magnet is installed on the back of the extrusion head. An electromagnet is installed inside the protective shell. The electromagnet and the permanent magnet are opposite magnetic poles and are arranged correspondingly.

[0015] Among them, the extrusion head is semicircularly arranged and acts on the hose by extrusion.

[0016] Among them, the fixed column is arranged in a "dumbbell" shape, and the sealing plate is semicircular, with a gap of 1 mm from the inner wall of the hollow column. At the same time, waterproof bearings are installed between both ends of the fixed column and the hollow column.

[0017] Among them, both ends of the rotating column extend out of the water inlet tank. One end is connected to the input shaft of the speed increaser, and the other end is connected to a sprocket. The hollow column also extends out of the water inlet tank, and a sprocket is also arranged at the end of the hollow column, and is connected to the sprocket at the end of the rotating column through a chain.

[0018] Among them, the middle of the stirring column is hollow in a column shape, and small holes are penetrated through one side surface, and the end of the liquid outlet pipe extends into the fixed column.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0020] 1. In the present utility model, in this design, by installing the flocculant barrel at the cross ladder, the flocculant is affected by the atmospheric pressure and its own gravity, so that the flocculant itself has pressure, and then quantitative cooperation with quantitative feeding. The extrusion between the extrusion head and the hose can reduce the space inside the hose, and further control the size of the flocculant flow rate.

[0021] In the present utility model, a sprocket is also provided at the end of the hollow column, and is connected to the sprocket at the end of the bearing and rotating column through a chain. This design enables the hollow column to rotate synchronously when the bearing and rotating column rotates. When the hollow column rotates, the stirring column will also rotate accordingly. At this time, since the sealing plate is semicircularly arranged and tightly adheres to the upper part of the hollow column, and the fixed column is fixed, it can be said that when the hollow column rotates, only the stirring column near the water surface is in a passing state, so that the flocculant can be input into the water inlet tank, improving the accuracy of dosing and the degree of uniform mixing between the flocculant and the water body. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall sectional structure of the present utility model;

[0023] Figure 2 In the present utility model Figure 1 is an enlarged schematic diagram of the structure at A;

[0024] Figure 3 is a schematic diagram of the partial top view structure of the present utility model;

[0025] Figure 4 is a schematic diagram of the partial sectional structure of the present utility model;

[0026] Figure 5 is a schematic diagram of the partial three-dimensional structure of the present utility model;

[0027] Figure 6 is a schematic diagram of the structure of the stirring column in the present utility model;

[0028] Figure 7 is a schematic diagram of the second embodiment structure of the stirring column in the present utility model.

[0029] Reference numerals in the drawings: 1, sedimentation tank; 101, overflow tank; 102, overflow port; 2, horizontal ladder; 201, flocculant barrel; 202, liquid outlet pipe; 2021, flexible hose; 3, water inlet tank; 301, speed increaser; 302, generator; 4, protective shell; 401, spring telescopic rod; 402, extrusion head; 4021, permanent magnet; 5, electromagnet; 6, bearing and rotating column; 601, paddle; 7, hollow column; 701, stirring column; 8, fixed column; 801, sealing plate. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the present invention:

[0032] Referring to Figures 1-6 , a sewage treatment tank includes a sedimentation tank 1. An overflow tank 101 is integrally arranged around the sedimentation tank 1, and the overflow tank 101 is inclined. An overflow port 102 is penetrated through the lowest point of the overflow tank 101. A cross ladder 2 is installed above the central island column of the sedimentation tank 1;

[0033] A flocculant barrel 201 is installed under the cross ladder 2 through a hoop, and a liquid outlet pipe 202 is provided at the outlet of the flocculant barrel 201;

[0034] An inlet water trough 3 is embedded on one side of the sedimentation tank 1. A rotating column 6 is rotatably connected to the upper edge of the inlet water trough 3 through a bearing. A plurality of paddle plates 601 are arranged in an array around the outside of the rotating column 6. A speed increaser 301 and a generator 302 are installed on the side edge of one side of the inlet water trough 3. The output shaft of the speed increaser 301 is connected to the rotor shaft of the generator 302. The inlet water trough 3 is inclined. The water flow inside the inlet water trough 3 is converted from gravitational potential energy into kinetic potential energy. When flowing, it will generate an impact on the paddle plates 601, thereby causing the rotating column 6 to rotate. At this time, the rotating column 6 drives the speed increaser 301 to amplify the rotation speed, and the speed increaser 301 is connected to the generator 302, thereby enabling the generator 302 to perform power generation operations;

[0035] A mixing mechanism is arranged at the lower edge of the inlet water trough 3 for adding flocculant to the water body and stirring;

[0036] The mixing mechanism includes: a hollow column 7, a stirring column 701, a fixed column 8, and a sealing plate 801. The lower edge of the water inlet tank 3 is rotatably connected to the hollow column 7. The stirring column 701 extends around the hollow column 7. A fixed column 8 is fixedly installed on the inner wall of the water inlet tank 3 near the hollow column 7. There is a sealing plate 801 in the middle of the fixed column 8. The fixed column 8 is arranged in a "dumbbell" shape, and the sealing plate 801 is semi-circular, with a gap of 1 mm from the inner wall of the hollow column 7. At the same time, waterproof bearings are installed between the two ends of the fixed column 8 and the hollow column 7. When the hollow column 7 rotates, the stirring column 701 will also rotate accordingly. At this time, because the sealing plate 801 is semi-circular, it just tightly adheres to the upper part of the hollow column 7, and the fixed column 8 is fixed. Therefore, when the hollow column 7 rotates, only the stirring column 701 close to the water surface is in a through state, and thus the flocculant can be input into the water inlet tank 3, improving the accuracy of dosing.

[0037] A control mechanism for controlling the release of the flocculant according to the size of the water flow is provided in the middle of the liquid outlet pipe 202;

[0038] The control mechanism includes: a protective shell 4, a spring telescopic rod 401, a squeezing head 402, and a permanent magnet 4021;

[0039] A protective shell 4 is installed outside the liquid outlet pipe 202 through a hoop. A hose 2021 is embedded in the part of the liquid outlet pipe 202 wrapped inside the protective shell 4. A squeezing head 402 is installed inside the protective shell 4 through a spring telescopic rod 401. A permanent magnet 4021 is installed on the back of the squeezing head 402. An electromagnet 5 is installed inside the protective shell 4. The electromagnet 5 and the permanent magnet 4021 are opposite magnetic poles and are arranged correspondingly. The current generated by the generator 302 is transmitted to the electromagnet 5. At this time, under the action of the spring telescopic rod 401, the squeezing head 402 presses the hose 2021 tightly, reducing the flow rate of the flocculant inside the hose 2021. When the water flow velocity inside the water inlet tank 3 increases, the water flow drives the rotating column 6 to increase its rotation speed, and the power generated by the generator 302 is greater. At this time, the magnetic suction force of the electromagnet 5 is stronger, and thus it attracts the permanent magnet 4021, causing the squeezing head 402 to move backward, and then increasing the space of the hose 2021 and improving the flow rate of the flocculant. This design uses the water flow to control the flow rate of the flocculant, which can improve the stability of the flocculant dosing, and at the same time, the dosing amount is more accurate and intelligent.

[0040] Preferably, the squeezing head 402 is semi-circular in shape. When it acts on the hose 2021 by squeezing, the space inside the hose 2021 can be reduced, thereby controlling the size of the flow rate of the flocculant.

[0041] Preferably, both ends of the transfer column 6 extend out of the water inlet tank 3. One end is connected to the input shaft of the speed increaser 301, and the other end is connected with a sprocket. The hollow column 7 also extends out of the water inlet tank 3, and a sprocket is also arranged at the end of the hollow column 7, and is connected with the sprocket at the end of the transfer column 6 through a chain. This design can make the hollow column 7 rotate synchronously when the transfer column 6 rotates, and then use the stirring column 701 to send the flocculant into the water body, improving the mixing uniformity between the flocculant and the water body.

[0042] Preferably, the middle part of the stirring column 701 is columnar and hollow, and small holes are penetrated through one side surface, and the end of the liquid outlet pipe extends into the fixed column. Since the position of the flocculant barrel 201 is relatively high, the flocculant inside the flocculant barrel 201 relies on its own pressure and is input between the sealing plate 801 and the hollow column 7 under the action of atmospheric pressure.

[0043] Embodiment 2:

[0044] Refer to Figures 6-7 , in addition to the embodiment in which the middle part of the stirring column 701 is columnar and hollow, there is another embodiment in which the middle part of the stirring column 701 is triangular pyramid-shaped and hollow. The triangular pyramid-shaped setting can generate less resistance when contacting the water body compared with the columnar setting.

[0045] Working principle: First, the water inlet tank 3 is arranged in an inclined shape. The water flow inside the water inlet tank 3 is converted from gravitational potential energy into kinetic potential energy, and will generate an impact on the paddle 601 when flowing, thereby making the transfer column 6 rotate. At this time, the rotating transfer column 6 drives the speed increaser 301 to amplify the rotation speed. The speed increaser 301 is connected to the generator 302, so that the generator 302 performs power generation operation. The current generated by the generator 302 is transmitted to the electromagnet 5. At this time, under the action of the spring telescopic rod 401, the extrusion head 402 presses the hose 2021 tightly, reducing the flow rate of the flocculant inside the hose 2021. When the water flow rate inside the water inlet tank 3 increases, the water flow drives the rotation speed of the transfer column 6 to increase, and the power generated by the generator 302 is greater. At this time, the magnetic suction force of the electromagnet 5 is stronger, so it attracts with the permanent magnet 4021, making the extrusion head 402 move backward, thereby making the space of the hose 2021 larger and increasing the flow rate of the flocculant;

[0046] At this time, since sprockets are also provided at the ends of the hollow column 7 and are connected by a chain to the sprockets at the ends of the bearing and rotating column 6, this design enables the bearing and rotating column 6 to rotate synchronously with the hollow column 7 when the bearing and rotating column 6 rotates. When the hollow column 7 rotates, the stirring column 701 also rotates accordingly. At this time, since the sealing plate 801 is semicircularly arranged and tightly adheres to the upper part of the hollow column 7, and the fixed column 8 is fixed, it can be said that when the hollow column 7 rotates, only the stirring column 701 close to the water surface is in a passing state, so that the flocculant can be input into the water inlet tank 3, improving the accuracy of dosing and the degree of uniform mixing between the flocculant and the water body.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage treatment tank, comprising a sedimentation tank (1), characterized in that: The sedimentation tank (1) is integrally provided with an overflow tank (101) around its periphery, and the overflow tank (101) is arranged at an inclination, an overflow port (102) is provided through the lowest point of the overflow tank (101), and a horizontal ladder (2) is installed above the island column in the middle of the sedimentation tank (1); A flocculant barrel (201) is installed below the horizontal ladder (2) via a clamp, and a liquid outlet pipe (202) is provided at the outlet of the flocculant barrel (201); A water inlet trough (3) is embedded in one side of the sedimentation tank (1); a bearing column (6) is rotatably connected to the upper edge of the water inlet trough (3) via a bearing; paddles (601) are arranged in an array around the outer periphery of the bearing column (6); a speed increaser (301) and a generator (302) are installed on the side edge of one side of the water inlet trough (3); an output shaft of the speed increaser (301) is connected to a rotor shaft of the generator (302); The lower edge of the water inlet trough (3) is provided with a mixing mechanism capable of adding flocculants to the water body and stirring the water body; The mixing mechanism comprises: a hollow column (7), a stirring column (701), a fixed column (8), and a sealing plate (801); the hollow column (7) is rotatably connected to the lower edge of the water inlet trough (3); the stirring column (701) extends around the hollow column (7); the fixed column (8) is fixedly installed on the inner wall of the water inlet trough (3) near the hollow column (7); and the sealing plate (801) is provided in the middle of the fixed column (8); The middle part of the liquid outlet pipe (202) is provided with a control mechanism capable of releasing the flocculant according to the size of the water flow rate; The control mechanism comprises: a protective shell (4), a spring telescopic rod (401), an extrusion head (402), and a permanent magnet (4021); The liquid outlet pipe (202) is externally mounted with a protective shell (4) via a clamp; the liquid outlet pipe (202) is located inside the protective shell (4) and a portion of the protective shell (4) is embedded with a hose (2021); an extrusion head (402) is installed inside the protective shell (4) via a spring telescopic rod (401); a permanent magnet (4021) is installed on the back of the extrusion head (402); and an electromagnet (5) is installed inside the protective shell (4).

2. A sewage treatment pool as claimed in claim 1, characterized in that: The electromagnet (5) and the permanent magnet (4021) have opposite magnetic poles and are arranged correspondingly.

3. A sewage treatment pool as claimed in claim 1, characterized in that: The extrusion head (402) is arranged in a semicircular shape and performs an extrusion action with the hose (2021).

4. A sewage treatment pool as claimed in claim 1, characterized in that: The fixed column (8) is arranged in a "dumbbell" shape, and the sealing plate (801) is semicircular, with a gap of 1 mm between the inner wall of the hollow column (7), and waterproof bearings are installed between the two ends of the fixed column (8) and the hollow column (7).

5. A sewage treatment pool as claimed in claim 1, characterized in that: Both ends of the bearing column (6) extend out of the water inlet groove (3), one end of which is connected to the input shaft of the speed increaser (301), and the other end of which is connected to a sprocket.

6. A sewage treatment pool as claimed in claim 1, characterized in that: The hollow column (7) also extends out of the water inlet groove (3), and a sprocket is also provided at the end of the hollow column (7), and is connected to the sprocket at the end of the bearing column (6) via a chain.

7. A sewage treatment pool as claimed in claim 1, characterized in that: The middle part of the stirring column (701) is a hollow column, a small hole is provided through the surface of one side, and the end of the liquid outlet pipe (202) extends to the inside of the fixed column (8).

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