Sedimentation tank for sewage treatment

Abstract

The utility model discloses a settling pond for sewage treatment, relates to the technical field of settling ponds, and aims to solve the problem of poor settling effect caused by insufficient time of partial existing settling ponds. According to the technical scheme, the device is characterized by comprising a hollow tank body, the tank body is communicated with a bottom water inlet pipe and a top water outlet pipe, a silt collecting part and a filtering part are sequentially arranged in the tank body from bottom to top, the top of the silt collecting part is open, and the bottom of the filtering part is open and right faces the opening of the silt collecting part. Through the arrangement of the structure, the whole structure is ensured to have a good and stable precipitation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sedimentation tanks, and more specifically, to a sedimentation tank for sewage treatment. Background Art

[0002] A sedimentation tank is a structure that uses sedimentation to remove suspended matter from water and is also a piece of equipment that purifies water.

[0003] Sedimentation tanks usually utilize the natural sedimentation or coagulation sedimentation of water to remove suspended matter in the water. In the prior art, sewage with large volume impurities removed is usually passed into the sedimentation tank. In order to speed up the precipitation of impurities in the sewage, flocculants are usually introduced into the sewage and the sewage is allowed to settle naturally. Sufficient time is usually required for the impurities in the sewage to be fully precipitated. If the time is insufficient, the sedimentation effect of the sewage will be poor. Therefore, a structure is provided to solve the problem of poor sedimentation effect in some existing sedimentation tanks due to insufficient time.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a sedimentation tank for sewage treatment.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: the sedimentation tank for sewage treatment includes a hollow tank body, the tank body is connected with a bottom water inlet pipe and a top water outlet pipe, the tank body is provided with a silt collecting part and a filter part arranged in sequence from bottom to top, the silt collecting part has an opening at the top, and the filter part has an opening at the bottom and is opposite to the opening of the silt collecting part.

[0007] The utility model is further configured as follows: the filter portion includes a sliding ring, an elastic deformation tube and a fixed ring which are arranged in sequence from bottom to top; the inner side of the fixed ring is fixedly connected with a baffle arc plate facing the bottom water inlet pipe; the concave surface of the baffle arc plate faces the baffle arc plate; a plurality of first ash falling grooves distributed circumferentially are penetrated on the baffle arc plate; the cross-sectional area of ​​the elastic deformation tube decreases from both ends in its length direction to the middle position.

[0008] The utility model is further configured as follows: the interior of the sliding ring is hollow.

[0009] The utility model is further configured as follows: an ash blocking arc plate is fixedly connected above the fixing ring, the concave surface of the ash blocking arc plate is away from the fixing ring, and a second ash falling groove is opened directly below the ash blocking arc plate.

[0010] The utility model is further configured as follows: the ash retaining arc plate is penetrated by a plurality of ash dropping holes distributed in the circumferential direction.

[0011] The utility model is further configured as follows: a dust-blocking fabric layer is fixedly connected above the dust-blocking arc plate, and the dust-blocking fabric layer is formed by plain weaving of nylon yarns.

[0012] The utility model is further configured as follows: a clamping ring is arranged above the dust-blocking fabric layer, and a plurality of circumferentially distributed locking bolts are connected between the clamping ring and the fixing ring.

[0013] The utility model is further configured as follows: the silt collecting part includes a silt collecting arc plate with an opening at the top, the bottom of the silt collecting arc plate is fixedly connected to a plurality of circumferentially distributed support rods, the silt collecting arc plate is fixedly connected to a silt discharge pipe interconnected with one side of a concave surface thereof, and the silt discharge pipe passes through the pool body.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The concave surface of the baffle arc plate faces the baffle arc plate, and the baffle arc plate is penetrated by a plurality of first ash dropping grooves distributed circumferentially, and the first ash dropping grooves are used to allow flocculated solid impurities to pass over the baffle arc plate. The cross-sectional area of ​​the elastic deformation tube decreases from both ends of the length direction to the middle position, and the interior of the sliding ring is hollow. This setting is used to reduce the overall mass of the sliding ring and the gravity it can withstand. When sewage enters from the bottom inlet pipe, it will exert a force on the baffle arc plate. After the baffle arc plate is subjected to external force, it will exert an upward force on the sliding ring. During the upward sliding process of the sliding ring, it will push the elastic deformation tube to elastically deform. During the deformation process, the elastic deformation tube will squeeze and shrink the inner diameter of the elastic deformation tube, so that the elastic deformation tube can achieve a stable slowdown of the sewage flow rate, ensure that the solid impurities flocculated in the sewage can be better precipitated, and with the help of the arc surface provided on the baffle arc plate, the flocculated and sunk impurities can be stably guided to fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] In the figure: 1. pool body; 2. bottom water inlet pipe; 3. top water outlet pipe; 4. sliding ring; 5. elastic deformation tube; 6. fixing ring; 7. flow baffle plate; 8. first ash falling trough; 9. ash baffle plate; 10. second ash falling trough; 11. ash falling hole; 12. ash baffle fabric layer; 13. clamping ring; 14. locking bolt; 15. silt collecting arc plate; 16. support rod; 17. silt discharge pipe. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] The sewage treatment sedimentation tank, such as Figure 1 and Figure 2 As shown, it includes a hollow tank body 1, and the tank body 1 is connected with a bottom water inlet pipe 2 and a top water outlet pipe 3. The sewage enters the tank body 1 stably along the bottom water inlet pipe 2, and the treated sewage is discharged along the top water outlet pipe 3. In this process, the sewage flows from bottom to top. In this process, the sewage and the impurities in the sewage will flow upward from bottom to top. In this process, the sewage will overcome the gravity it is subjected to, so that the flow rate of the sewage will gradually slow down, ensuring that the flocculated impurities in the sewage can be stably settled, ensuring that the sewage settling effect is better, and the tank body 1 is provided with a plurality of pipes from bottom to top. The silt collecting part and the filter part are provided, the filter part is used to realize stable shielding and filtering of flocculated impurities, ensuring that the flocculated solid impurities can be stably separated from water, the silt collecting part is provided to realize stable collection of solid impurities, ensuring that subsequent solid impurities can be stably discharged from the pool body 1, the silt collecting part has an opening at the top, and the filter part has an opening at the bottom and is directly opposite to the opening of the silt collecting part. This arrangement ensures that the flocculated impurities collected by the silt collecting part can stably fall from its bottom opening and fall into the silt collecting part, ensuring that the silt collecting part can stably realize stable collection of flocculated impurities;

[0021] like Figure 2 As shown, the filter portion includes a sliding ring 4, an elastic deformation tube 5 and a fixed ring 6 which are arranged in sequence from bottom to top, the outer ring wall of the fixed ring 6 is against the inner circumferential wall of the tank body 1, the outer ring wall of the sliding ring 4 and the inner circumferential wall of the tank body 1 are in contact with each other, the elastic deformation tube 5 is set to EPDM rubber, and the good weather resistance and good elasticity of this type of material are used to ensure that the elastic deformation tube 5 has good and stable elastic deformation performance and a good service life, and the inner side of the fixed ring 6 is fixedly connected with a baffle arc plate 7 facing the bottom water inlet pipe 2, the baffle arc plate 7 and the fixed ring 6 are fixed by welding, the concave surface of the baffle arc plate 7 faces the baffle arc plate 7, and the baffle arc plate 7 is penetrated by a plurality of first ash falling grooves 8 distributed circumferentially, and the first ash falling grooves 8 are provided for allowing flocculated solid impurities to pass through the baffle The cross-sectional area of ​​the flow arc plate 7 and the elastic deformation tube 5 decreases from both ends in the length direction to the middle position. The interior of the sliding ring 4 is hollow. This setting is used to reduce the overall mass of the sliding ring 4 and the gravity it will be subjected to. When sewage enters from the bottom water inlet pipe 2, it will exert a force on the baffle arc plate 7. After being subjected to external force, the baffle arc plate 7 will exert an upward force on the sliding ring 4. During the upward sliding process of the sliding ring 4, the elastic deformation tube 5 will be pushed to elastically deform. During the deformation process, the elastic deformation tube 5 will squeeze and shrink the inner diameter of the elastic deformation tube 5, so that the elastic deformation tube 5 can achieve a stable slowdown of the sewage flow rate, ensuring that the solid impurities flocculated in the sewage can be better precipitated. With the help of the arc surface provided on the baffle arc plate 7, the flocculated and sunk impurities can be stably guided to fall.

[0022] like Figure 2As shown, an ash baffle arc plate 9 is fixedly connected to the top of the fixing ring 6 by bolt locking, and the concave surface of the ash baffle arc plate 9 is away from the fixing ring 6. A second ash falling trough 10 is opened directly below the ash baffle arc plate 9. The second ash falling trough 10 is used for allowing flocculated impurities that have passed over the ash baffle arc plate 9 to fall again through the second ash falling trough 10. With the help of the curved surface of the ash baffle arc plate 9, the flocculated solid impurities can be stably guided, ensuring that the flocculated solid impurities can be better collected in the second ash falling trough 10 and stably fall through the second ash falling trough 10.

[0023] like Figure 2 As shown, the ash baffle arc plate 9 is penetrated by a plurality of circumferentially distributed ash dropping holes 11. The flocculated impurities moving to the top of the ash baffle arc plate 9 will pass over the ash baffle arc plate 9 along the ash dropping holes 11 under the action of gravity, thereby ensuring that the flocculated impurities can be stably settled and increasing the path for the flocculated impurities to pass over the ash baffle arc plate 9.

[0024] like Figure 2 As shown, a dust-blocking fabric layer 12 is fixedly connected above the dust-blocking arc plate 9. The dust-blocking fabric layer 12 is made of nylon yarn in plain weave on a shuttle loom. The high structural strength of the plain weave is used to ensure that the dust-blocking fabric layer 12 has better structural stability. At the same time, the high structural strength and good elasticity of the nylon yarn are used to ensure that the dust-blocking fabric layer 12 has good and stable structural strength. The dust-blocking fabric layer 12 is set to stably block the flocculated impurities, ensuring that the flocculated impurities can be stably blocked in the filter channel. Under the action of gravity on the flocculated impurities, the dust-blocking fabric layer 12 can be easily blocked. The dust blocking fabric layer 12 will sink when used, and a clamping ring 13 is provided above the dust blocking fabric layer 12. A number of circumferentially distributed locking bolts 14 are connected between the clamping ring 13 and the fixing ring 6. The locking bolts 14 are arranged as a circumferentially distributed structure. The arrangement ensures that the locking and limiting functions of the fixing ring 6 and the clamping ring 13 by the locking bolts 14 are more stable. The locking bolts 14 are threadedly connected to the fixing ring 6. The fixing ring 6 can be stably clamped by the locking bolts 14, and the dust blocking fabric layer 12 can be stably clamped with the help of the fixing ring 6, thereby ensuring that the position of the dust blocking fabric layer 12 and the dust blocking and filtering functions it can produce are more stable.

[0025] like Figure 2As shown, the silt collecting part includes a silt collecting arc plate 15 with an opening at the top, and the bottom of the silt collecting arc plate 15 is fixedly connected to a plurality of circumferentially distributed support rods 16 by welding. The support rods 16 are used to achieve stable support and limit the silt collecting arc plate 15, ensuring that the position of the silt collecting arc plate 15 and the functions it can produce are more stable. The peripheral wall of the silt collecting arc plate 15 fits with the inner wall of the pool body 1. This arrangement ensures that the silt collecting arc plate 15 can achieve stable collection of fallen ash, while at the same time The arc-shaped inclined surface provided on the silt collecting arc plate 15 can realize stable collection and guidance of the fallen ash, ensuring that the fallen ash can be stably stored in the silt collecting arc plate 15. The silt collecting arc plate 15 is fixedly connected with a silt discharge pipe 17 which is interconnected with one side of its concave surface. The silt discharge pipe 17 passes through the pool body 1. A suction force is applied through the silt discharge pipe 17 and the suction force is applied to the ash collected on the concave surface of the silt collecting arc plate 15, so that the fallen ash collected by the silt collecting arc plate 15 can be discharged from the pool body 1 along the silt discharge pipe 17.

[0026] Working principle: sewage enters the pool body 1 through the bottom water inlet pipe 2, and the sewage impacts the baffle arc plate 7. The flow rate of the sewage will be slowed down under the action of the baffle arc plate 7. At the same time, under the guidance of the baffle arc plate 7, the sewage will pass through the first ash falling trough 8 and cross the baffle arc plate 7 into the elastic deformation tube 5. In this process, the baffle arc plate 7 will be subjected to external force and slide upward, and the baffle arc plate 7 will drive the sliding ring 4 to slide upward. In this process, the sliding ring 4 will squeeze the elastic deformation tube 5 for elastic deformation. In this process, the diameter of the middle section of the elastic deformation tube 5 will be reduced. Therefore, the sewage will also push the elastic deformation tube 5 to elastically deform during the upward flow. With the help of the elastic deformation The elastic force generated by the variable tube 5 slows down the flow rate of the sewage, so that the impurities in the sewage can be better settled. As the sewage continues to flow upward, it will flow to the ash retaining arc plate 9. The sewage will pass over the ash retaining arc plate 9 with the help of the second ash dropping trough 10 and the ash dropping hole 11. In this process, the flow rate of the sewage will be further slowed down. The sewage continues to flow upward and is blocked by the ash retaining fabric layer 12. Under the blocking and filtering effect of the ash retaining fabric layer 12, the flocculated solid impurities in the sewage are filtered out, and the filtered water will be discharged from the pool body 1 through the top outlet pipe 3. The filtered solid impurities will enter the silt collecting arc plate 15 under the action of gravity and be discharged through the silt discharge pipe 17.

[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sedimentation tank for sewage treatment, comprising a hollow tank body (1), wherein the tank body (1) is connected with a bottom water inlet pipe (2) and a top water outlet pipe (3), characterized in that: The pool body (1) is provided with a silt collecting portion and a filter portion which are arranged in sequence from bottom to top. The silt collecting portion is open at the top, and the filter portion is open at the bottom and faces the opening of the silt collecting portion. The filter portion comprises a sliding ring (4), an elastic deformation tube (5) and a fixed ring (6) which are arranged in sequence from bottom to top. The inner side of the fixed ring (6) is fixedly connected with a baffle plate (7) which faces the bottom water inlet pipe (2). The concave surface of the baffle plate (7) faces the baffle plate (7). The baffle plate (7) is provided with a plurality of first ash dropping grooves (8) which are distributed in a circumferential direction. The cross-sectional area of ​​the elastic deformation tube (5) decreases from both ends in the length direction thereof to the middle position.

2. The sewage treatment sedimentation tank according to claim 1, characterized in that: The sliding ring (4) is hollow inside.

3. The sewage treatment sedimentation tank according to claim 1, characterized in that: An ash-blocking arc plate (9) is fixedly connected above the fixed ring (6), the concave surface of the ash-blocking arc plate (9) faces away from the fixed ring (6), and a second ash-falling groove (10) is provided directly below the ash-blocking arc plate (9).

4. The sewage treatment sedimentation tank according to claim 3, characterized in that: The ash blocking arc plate (9) is provided with a plurality of ash dropping holes (11) distributed in the circumferential direction.

5. The sewage treatment sedimentation tank according to claim 4, characterized in that: A dust-blocking fabric layer (12) is fixedly connected above the dust-blocking arc plate (9), and the dust-blocking fabric layer (12) is made of nylon yarn plain weave.

6. The sedimentation tank for sewage treatment according to claim 5, characterized in that: A clamping ring (13) is provided above the dust-blocking fabric layer (12), and a plurality of circumferentially distributed locking bolts (14) are connected between the clamping ring (13) and the fixing ring (6).

7. The sewage treatment sedimentation tank according to claim 1, characterized in that: The silt collecting portion comprises a silt collecting arc plate (15) with an opening at the top, a plurality of circumferentially distributed support rods (16) are fixedly connected to the bottom of the silt collecting arc plate (15), a silt discharge pipe (17) which is in communication with one side of a concave surface of the silt collecting arc plate (15) is fixedly connected to the silt collecting arc plate (15), and the silt discharge pipe (17) passes through the pool body (1).

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