Inclined plate sedimentation tank

Abstract

The utility model discloses an inclined plate sedimentation tank which comprises a tank body, and further comprises upper-layer inclined plates and lower-layer inclined plates, a plurality of upper-layer inclined plates are fixedly arranged in the upper space of the tank body at intervals in parallel, and a plurality of lower-layer inclined plates are also fixedly arranged in the lower space of the tank body at intervals in parallel; the lower end of each upper-layer inclined plate is exactly located in a gap between every two adjacent lower-layer inclined plates, the inclination direction of the upper-side inclined plates is opposite to that of the lower-layer inclined plates, and the upper-layer inclined plates and the lower-layer inclined plates are arranged in a staggered and spaced mode to form a fishbone-shaped arrangement state. The settling capacity of the sludge is improved; the sedimentation tank is simple in structure and low in cost for building a new sedimentation tank and transforming an old sedimentation tank.

Description

Technical Field

[0001] The utility model relates to a wastewater treatment device, in particular to an inclined plate sedimentation tank. Background Art

[0002] The inclined plate sedimentation tank is a commonly used structure in wastewater treatment, mainly used for physical and chemical reaction sedimentation of sludge. The common problem faced by the existing inclined plate sedimentation tank is that after the sludge on the inclined plate in the sedimentation tank accumulates for a long time, as the amount of sludge increases, the inclined plate will collapse. Therefore, it is necessary to clean the sludge on the inclined plate surface and replace the damaged inclined plate, and the cleaning and replacement of the inclined plate are very troublesome.

[0003] At present, the main methods adopted by many environmental protection companies to solve the above problems are:

[0004] (1) Simplify the installation method and replacement method of the inclined plate;

[0005] (2) Improve the sludge falling efficiency and cleaning efficiency of the inclined plate. For example, add motor vibration to make the sludge fall on the inclined plate, adjust the inclined plate structure to realize sludge falling without power rotation or manual rotation when the water flows, add an external device for cleaning sludge, change the opening orientation of the air diffuser pipe for bottom flushing of the inclined plate, etc.

[0006] Among the above solutions, for the first one, simplifying the installation and replacement method of the inclined plate can quickly replace the inclined plate after it collapses. It is relatively easy to operate for the integrated steel structure inclined plate sedimentation tank, but it is relatively difficult to implement for the conventional concrete pool body, and it will also increase the complexity of the internal structure; for the second one, by improving the sludge falling efficiency and cleaning efficiency of the inclined plate, it is indeed possible to improve the stability of the inclined plate and extend the service life by reducing sludge accumulation. At present, the use effect is good, and it is not limited by the pool body material; however, most of the existing practices need to add additional power to achieve, which increases the operation cost, and it is relatively troublesome to transform the old pool body. Content of the Utility Model

[0007] In order to overcome the above defects, the utility model provides an inclined plate sedimentation tank, which can increase the ability to block sludge and enhance the sludge falling efficiency of the inclined plate, effectively solve the problem of sludge accumulation on the inclined plate without adding additional power, and can meet the installation or transformation requirements for both new and old pool bodies.

[0008] The technical solution adopted by the utility model to solve its technical problems: an inclined plate sedimentation tank, including a pool body, further including upper inclined plates and lower inclined plates. A plurality of upper inclined plates are fixedly arranged in parallel at intervals in the upper space of the pool body, and a plurality of lower inclined plates are also fixedly arranged in parallel at intervals in the lower space of the pool body. And the lower end of the upper inclined plate is exactly located in the gap between two adjacent lower inclined plates, and the inclination direction of the upper inclined plate is opposite to that of the lower inclined plate. The upper inclined plates and the lower inclined plates are arranged in an alternating and spaced manner to form a herringbone arrangement state.

[0009] As a further improvement of the present utility model, the included angle (a) between the upper inclined plate and the horizontal plane is 55° to 65°, and the inclination angle of the lower inclined plate is complementary to that of the upper inclined plate.

[0010] As a further improvement of the present utility model, the upper inclined plates are arranged at uniform intervals, and the lower inclined plates are also arranged at uniform intervals, and the distance between adjacent upper inclined plates is equal to the distance between adjacent lower inclined plates.

[0011] As a further improvement of the present utility model, the lower end of the upper side inclined plate is located exactly in the middle of the upper ends of two adjacent lower inclined plates.

[0012] As a further improvement of the present utility model, the upper edge of the upper inclined plate at one end of the arrangement direction is in close contact with the side wall of the pool body at one end along the arrangement direction of the upper inclined plate, and there is a gap between the lower edge of the upper inclined plate at the other end of the arrangement direction and the side wall of the pool body at the other end along the arrangement direction of the upper inclined plate. There is a gap between the lower edge of the lower inclined plate at one end of the arrangement direction and the side wall of the pool body at one end along the arrangement direction of the lower inclined plate, and the upper edge of the lower inclined plate at the other end of the arrangement direction is in close contact with the side wall of the pool body at the other end along the arrangement direction of the lower inclined plate.

[0013] As a further improvement of the present utility model, the gap between the lower edge of the upper inclined plate at the other end of the arrangement direction and the side wall of the pool body at the other end along the arrangement direction of the upper inclined plate is 1 / 4 of the gap between two adjacent upper inclined plates; the gap between the upper edge of the lower inclined plate at one end of the arrangement direction and the side wall of the pool body at one end along the arrangement direction of the lower inclined plate is 1 / 4 to 1 / 3 of the gap between two adjacent lower inclined plates.

[0014] As a further improvement of the present utility model, the height of the upper inclined plate along the depth direction of the pool body is the same as the height of the lower inclined plate along the depth direction of the pool body.

[0015] As a further improvement of the present utility model, both the upper inclined plate and the lower inclined plate are of flat plate structure or both the upper inclined plate and the lower inclined plate are of cylindrical tubular structure.

[0016] As a further improvement of the present utility model, a support structure is fixedly arranged between the upper inclined plate and the lower inclined plate, and the support structure is fixedly connected to the lower end of the upper inclined plate, the upper end of the lower inclined plate and the inner side wall of the pool body respectively.

[0017] As a further improvement of the present utility model, an aeration and flushing device is fixedly installed in the pool body, and the aeration and flushing device is located below the lower inclined plate, and the aeration and flushing device can perform aeration and flushing on the lower inclined plate and the upper inclined plate above it.

[0018] The beneficial effects of the present utility model are as follows: By staggeredly installing upper inclined plates and lower inclined plates with opposite inclination directions in the pool body, the upper inclined plates and the lower inclined plates are arranged in a fishbone shape, forming a double resistance to the floating sludge. In this way, most of the sludge can be prevented from reaching above the inclined plates, effectively reducing the risk of the inclined plates being collapsed due to the accumulation of sludge on the upper side of the inclined plates. Moreover, the upper inclined plates and the lower inclined plates are staggeredly arranged, forming reverse flow states between the upper inclined plates and between the lower inclined plates respectively. The reverse flow state also has a certain thrust on the sludge accumulated on the lower inclined plates, which is beneficial to increasing the falling of the sludge on the lower inclined plates. There is also a reverse flow state inside the single channel of the lower inclined plate, which can effectively increase the resistance to the rising of the sludge and slow down the rising of the sludge. At the same time, the sludge above and below in the same channel will combine to form sludge masses with greater gravity, increasing the sedimentation of the sludge. The upper inclined plates and the lower inclined plates of the present utility model have the same structure as the inclined plate structure of the conventional pool body, and can be quickly installed and replaced in the existing pool body without changing the original pool body structure. The structure of the present utility model is simple, and the cost of building a new sedimentation tank and transforming an old sedimentation tank is low. Description of the Drawings

[0019] Figure 1 is the front view of the present utility model;

[0020] Figure 2 is the schematic structural principle diagram of the present utility model. Detailed Embodiments

[0021] Embodiment: An inclined plate sedimentation tank includes a pool body 1, and also includes an upper inclined plate 2 and a lower inclined plate 3. A plurality of upper inclined plates 2 are fixedly arranged in parallel at intervals in the upper space of the pool body 1, and a plurality of lower inclined plates 3 are also fixedly arranged in parallel at intervals in the lower space of the pool body 1. Moreover, the lower end of the upper inclined plate 2 is exactly located in the gap between two adjacent lower inclined plates 3, and the inclination direction of the upper inclined plate is opposite to that of the lower inclined plate 3. The upper inclined plate 2 and the lower inclined plate 3 are staggeredly arranged at intervals to form a fishbone-shaped arrangement state. This kind of sedimentation tank uses fishbone-shaped inclined plates to achieve sludge interception and rapid falling. The specific method is as follows: When the sludge rises from the bottom of the inclined plate to the lower inclined plate 3, it is intercepted by the resistance, part of the sludge falls, and part of the sludge continues to rise. When the sludge rises to the upper inclined plate 2, it is again affected by the reverse resistance and falls. When falling, it will also meet the sludge on the lower inclined plate 3 to form forward and reverse resistance, accelerating the falling of the sludge. At the same time, the sludge will also gather after meeting, increasing the volume of the sludge and also accelerating the falling of the sludge.

[0022] The upper inclined plate 2 and the lower inclined plate 3 adopt an up-and-down placement structure, thus forming a double resistance, which can prevent most of the sludge from reaching above the inclined plates and reduce the risk of the inclined plates being collapsed due to sludge accumulation. Moreover, the upper inclined plate 2 and the lower inclined plate 3 are placed in a staggered manner up and down, forming an internal reverse flow state between the upper inclined plate 2 and the lower inclined plate 3, as Figure 2As shown, the reverse flow pattern also has a certain thrust on the sludge on the lower inclined plate 3, which can effectively increase the falling efficiency of the sludge on the lower inclined plate 3. There is a reverse flow pattern inside the single channel formed between adjacent upper inclined plates 2 and between adjacent lower inclined plates 3, as Figure 2 shown, which can effectively increase the rising resistance of the sludge, slow down the rising of the sludge. At the same time, the sludge up and down in the same channel will combine to form a sludge mass with greater gravity, which also effectively increases the sedimentation of the sludge.

[0023] The included angle a between the upper inclined plate 2 and the horizontal plane is 55° - 65°, and the inclination angle of the lower inclined plate 3 is complementary to that of the upper inclined plate 2. The upper inclined plate 2 and the lower inclined plate 3 are symmetric in the inclination direction, that is, the inclination angle of the upper inclined plate 2 is complementary to that of the lower inclined plate 3. The upper inclined plate 2 and the lower inclined plate 3 of this structure have a high blocking ability for sludge and can effectively block the rising of sludge.

[0024] The upper inclined plates 2 are arranged at equal intervals, and the lower inclined plates 3 are also arranged at equal intervals, and the distance between adjacent upper inclined plates 2 is equal to the distance between adjacent lower inclined plates 3.

[0025] The lower end of the upper side inclined plate is located exactly in the middle of the upper ends of two adjacent lower inclined plates 3. The upper inclined plate 2 and the lower inclined plate 3 together form a structure of uniformly staggered arrangement up and down, which can make the sludge sedimentation ability at each position in the pool body 1 consistent and ensure the full sedimentation of the sludge.

[0026] The upper end edge of the upper inclined plate 2 at one end of the arrangement direction is in close contact with the side wall of the pool body 1 at one end along the arrangement direction of the upper inclined plate 2. There is a gap between the lower end edge of the upper inclined plate 2 at the other end of the arrangement direction and the side wall of the pool body 1 at the other end along the arrangement direction of the upper inclined plate 2. There is a gap between the lower end edge of the lower inclined plate 3 at one end of the arrangement direction and the side wall of the pool body 1 at one end along the arrangement direction of the lower inclined plate 3. The upper end edge of the lower inclined plate 3 at the other end of the arrangement direction is in close contact with the side wall of the pool body 1 at the other end along the arrangement direction of the lower inclined plate 3. This structure can effectively prevent the sludge from rising from the gap between the inclined plate and the pool body 1 and ensure the full sedimentation of the sludge.

[0027] The gap between the lower end edge of the upper inclined plate 2 at the other end of the arrangement direction and the side wall of the pool body 1 at the other end along the arrangement direction of the upper inclined plate 2 is 1 / 4 of the gap between two adjacent upper inclined plates 2; the gap between the upper end edge of the lower inclined plate 3 at one end of the arrangement direction and the side wall of the pool body 1 at one end along the arrangement direction of the lower inclined plate 3 is 1 / 4 - 1 / 3 of the gap between two adjacent lower inclined plates 3.

[0028] The height of the upper inclined plate 2 along the depth direction of the pool body 1 is the same as that of the lower inclined plate 3 along the depth direction of the pool body 1. The heights of the upper inclined plate 2 and the lower inclined plate 3 are the same, without any gap in between. That is, the height of the upper inclined plate 2 is equal to 1 / 2 of the overall inclined plate structure formed by the upper inclined plate 2 and the lower inclined plate 3, and the height of the overall inclined plate formed by the upper inclined plate 2 and the lower inclined plate 3 is the same as the inclined plate height of the conventional pool body 1.

[0029] Both the upper inclined plate 2 and the lower inclined plate 3 are of flat plate structure or both the upper inclined plate 2 and the lower inclined plate 3 are of cylindrical tubular structure. Such inclined plates have a simple structure, low cost, and are the same as the inclined plates used in the conventional pool body 1, which can achieve rapid installation and replacement without changing the original pool body 1.

[0030] A support structure is fixedly arranged between the upper inclined plate 2 and the lower inclined plate 3, and the support structure is fixedly connected to the lower end of the upper inclined plate 2, the upper end of the lower inclined plate 3 and the inner side wall of the pool body 1 respectively. This can effectively increase the stability of the lower inclined plate 3. Of course, support structures can also be arranged at the upper end of the upper inclined plate 2 and the lower end of the lower inclined plate 3, and the support structures are fixedly connected to the pool body 1 to further support and position the upper inclined plate 2 and the lower inclined plate 3 to prevent them from being collapsed by the sludge.

[0031] An aeration flushing device is also fixedly installed in the pool body 1. The aeration flushing device is located below the lower inclined plate 3, and the aeration flushing device can aerate and flush the lower inclined plate 3 and the upper inclined plate 2 above it. The aeration flushing system can ensure that the residual sludge on the inclined plate falls.

Claims

1. A lamella sedimentation tank, comprising a tank body (1), characterized in that: It further includes an upper inclined plate (2) and a lower inclined plate (3). A plurality of upper inclined plates are fixedly arranged in parallel at intervals in the upper space of the pool body, and a plurality of lower inclined plates are also fixedly arranged in parallel at intervals in the lower space of the pool body. The lower end of the upper inclined plate is exactly located in the gap between two adjacent lower inclined plates. The inclination direction of the upper inclined plate is opposite to that of the lower inclined plate. The upper inclined plate and the lower inclined plate are arranged in an interleaved and spaced manner to form a fishbone arrangement state.

2. The inclined plate sedimentation tank according to claim 1, characterized in that: The included angle (a) between the upper inclined plate and the horizontal plane is 55° - 65°, and the inclination angle of the lower inclined plate is complementary to that of the upper inclined plate.

3. The inclined plate sedimentation tank according to claim 1, characterized in that: The upper inclined plates are arranged at uniform intervals, and the lower inclined plates are also arranged at uniform intervals. The distance between adjacent upper inclined plates is equal to the distance between adjacent lower inclined plates.

4. The inclined plate sedimentation tank according to claim 3, characterized in that: The lower end of the upper inclined plate is located at the exact middle position between the upper ends of two adjacent lower inclined plates.

5. The inclined plate sedimentation tank according to claim 3, characterized in that: The upper edge of the upper inclined plate at one end of the arrangement direction is in close contact with the side wall of the pool body at one end along the arrangement direction of the upper inclined plate. There is a gap between the lower edge of the upper inclined plate at the other end of the arrangement direction and the side wall of the pool body at the other end along the arrangement direction of the upper inclined plate. There is a gap between the lower edge of the lower inclined plate at one end of the arrangement direction and the side wall of the pool body at one end along the arrangement direction of the lower inclined plate. The upper edge of the lower inclined plate at the other end of the arrangement direction is in close contact with the side wall of the pool body at the other end along the arrangement direction of the lower inclined plate.

6. The inclined plate sedimentation tank according to claim 5, characterized in that: The gap between the lower edge of the upper inclined plate at the other end of the arrangement direction and the side wall of the pool body at the other end along the arrangement direction of the upper inclined plate is 1 / 4 of the gap between two adjacent upper inclined plates; the gap between the upper edge of the lower inclined plate at one end of the arrangement direction and the side wall of the pool body at one end along the arrangement direction of the lower inclined plate is 1 / 4 - 1 / 3 of the gap between two adjacent lower inclined plates.

7. The inclined plate sedimentation tank according to claim 1, wherein: The height of the upper inclined plate in the depth direction of the pool body is the same as the height of the lower inclined plate in the depth direction of the pool body.

8. The inclined plate sedimentation tank according to claim 1, wherein: Both the upper inclined plate and the lower inclined plate are of flat plate structure or both the upper inclined plate and the lower inclined plate are of cylindrical tubular structure.

9. The inclined plate sedimentation tank according to claim 1, wherein: A support structure is fixedly arranged between the upper inclined plate and the lower inclined plate. The support structure is fixedly connected to the lower end of the upper inclined plate, the upper end of the lower inclined plate and the inner side wall of the pool body respectively.

10. The inclined plate sedimentation tank according to claim 1, characterized in that: An aeration and flushing device is fixedly installed in the pool body. The aeration and flushing device is located below the lower inclined plate and can perform aeration and flushing on the lower inclined plate and the upper inclined plate above it.

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