Sewage overflow device of secondary sedimentation tank

Abstract

The utility model discloses a sewage overflow device of a secondary sedimentation tank, and relates to the technical field of sewage treatment. The sewage overflow device of the secondary sedimentation tank comprises an overflow groove, an outer baffle plate and a cleaning frame, the overflow groove is in a hollow groove body shape with an opening in the upper portion, overflow weir triangular plates are arranged at the top ends of the front side wall and the rear side wall of the overflow groove, a water outlet is formed in the lower surface of the overflow groove, the lower side of the water outlet is connected with a water outlet pipe, and the outer baffle is arranged on the periphery of the overflow groove by a circle. The upper end of the outer baffle is higher than the upper end of the overflow weir triangular plate, the cleaning frame is in an n shape, and cleaning brushes are arranged on the front side wall and the rear side wall of the interior of the cleaning frame. According to the scheme, the n-shaped cleaning frame and the internal cleaning brush are clamped on the overflow weir triangular plate, the cleaning frame and the cleaning brush are moved through the driving mechanism, and the cleaning brush rubs with moss and water scale on the surface of the overflow weir triangular plate, so that the moss and the water scale are separated. By means of the operation mode, workers do not need to enter water, safety is high, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a secondary sedimentation tank sewage overflow device. Background Art

[0002] The sedimentation tank after biological treatment is usually called the secondary sedimentation tank or the final sedimentation tank (final sedimentation tank). The function of the secondary sedimentation tank is to separate mud and water, clarify the mixed liquid, concentrate the sludge and return the separated sludge to the biological treatment section.

[0003] An overflow device is usually set in the secondary sedimentation tank. The overflow device can make the sewage overflow evenly, realize mud and water separation, make the mixed liquor after biological treatment become clear, and at the same time concentrate the sludge in the mixed liquor.

[0004] At present, moss, scale and other substances are easily formed on the overflow device, which affects the overflow of sewage and needs to be cleaned regularly. At present, it is mainly cleaned manually with a handheld brush. The cleaning efficiency is low, and during the cleaning process, the staff needs to go into the water. The environment in the sewage is poor, which causes certain harm to the staff. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a secondary sedimentation tank sewage overflow device, which solves the problem of low efficiency in the current manual cleaning of the overflow device.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a secondary sedimentation tank sewage overflow device, comprising:

[0009] An overflow trough, the overflow trough is in the shape of a hollow trough with an upper opening, the tops of the front and rear side walls of the overflow trough are both provided with overflow weir triangular plates, a water outlet is provided on the lower surface of the overflow trough, and the lower side of the water outlet is connected to a water outlet pipe;

[0010] An outer baffle plate, which is arranged around the periphery of the overflow trough, and the height of the upper end of the outer baffle plate is higher than the height of the upper end of the overflow weir triangular plate;

[0011] The cleaning frame is in an N shape, the front and rear side walls inside the cleaning frame are both provided with cleaning brushes, the cleaning frame is clamped on the overflow weir triangular plate, and the overflow trough is provided with a driving mechanism for moving the cleaning frame.

[0012] Preferably, the front and rear side walls of the overflow trough are arranged to be straight or wavy.

[0013] Preferably, a support frame is provided on the outer wall of the overflow trough, and the outer end of the support frame is connected to the inner wall of the outer baffle.

[0014] Preferably, the overflow trough and overflow weir triangular plate are made of stainless steel, and the surface of the overflow weir triangular plate is coated with polytetrafluoroethylene coating.

[0015] Preferably, the driving mechanism includes a lead screw that is laterally rotatably connected to the overflow groove, an internal threaded sleeve is sleeved on the outer wall of the lead screw, the internal threaded sleeve is threadedly connected to the lead screw, the outer wall of the internal threaded sleeve is connected to the cleaning frames on both sides through a support rod, one end of the lead screw extends to the outside of the overflow groove, and a driving motor connected to the lead screw is provided on the outside of the overflow groove.

[0016] Preferably, the drive motor is a waterproof drive motor.

[0017] Preferably, both left and right side walls of the support rod are connected with a travel switch, and the travel switch is electrically connected to the drive motor.

[0018] (III) Beneficial effects

[0019] The utility model provides a secondary sedimentation tank sewage overflow device, which has at least the following beneficial effects compared with the prior art:

[0020] This solution adopts an N-shaped cleaning frame and an internal cleaning brush which are clamped on the overflow weir triangular plate. The cleaning frame and the cleaning brush are moved by a driving mechanism, and the cleaning brush rubs against the moss and scale on the surface of the overflow weir triangular plate to separate them.

[0021] This mode of operation does not require workers to go into the water, and is safer and more efficient.

[0022] The overflowed sewage is directly discharged to the outside from the outlet pipe on the lower side. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the outer baffle of the utility model;

[0025] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A in the figure.

[0026] In the figure: 1. overflow trough; 2. overflow weir triangular plate; 3. support frame; 4. outer baffle; 5. water outlet; 6. water outlet pipe; 7. drive motor; 8. lead screw; 9. internal thread sleeve; 10. support rod; 11. cleaning frame; 12. cleaning brush; 13. travel switch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1:

[0029] See also Figure 1-3 , the utility model provides a technical solution: a secondary sedimentation tank sewage overflow device, comprising: an overflow trough 1, an outer baffle 4, and a cleaning frame 11;

[0030] The overflow trough 1 is a hollow trough body with an opening at the top. The tops of the front and rear side walls of the overflow trough 1 are both set as overflow weir triangular plates 2. A water outlet 5 is opened on the lower surface of the overflow trough 1. The lower side of the water outlet 5 is connected to the water outlet pipe 6. The outer baffle plate 4 is arranged around the periphery of the overflow trough 1. The upper end height of the outer baffle plate 4 is higher than the upper end height of the overflow weir triangular plate 2. The cleaning frame 11 is n-shaped. The front and rear side walls inside the cleaning frame 11 are both set with cleaning brushes 12. The cleaning frame 11 is stuck on the overflow weir triangular plate 2. The overflow trough 1 is provided with a driving mechanism for moving the cleaning frame 11.

[0031] Analysis of the above content: When in use, the overflow trough 1 and the outer baffle 4 are installed according to the required water level in the secondary sedimentation tank, so that the height of the overflow trough 1 and the outer baffle 4 meets the requirements. The floating objects on the sewage surface are blocked on the outside by the outer baffle 4, and the sewage on the middle and lower sides flows from the lower part of the outer baffle 4 to the overflow trough 1. After the sewage level in the outer baffle 4 increases, it overflows from the overflow weir triangular plate 2 into the overflow trough 1, and the overflowed sewage is concentratedly output to the outside through the outlet 5 and the outlet pipe 6.

[0032] Embodiment 2:

[0033] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: the front and rear side walls of the overflow trough 1 are arranged to be straight or wavy.

[0034] Analysis of the above content: According to the relatively low processing requirements of the straight overflow trough 1, the contact area between the side of the wavy overflow trough 1 and the water is increased, which can expand the sewage overflow space.

[0035] Embodiment three:

[0036] See also Figure 1-3The utility model provides a technical solution based on the first embodiment: a support frame 3 is provided on the outer wall of the overflow trough 1 , and the outer end of the support frame 3 is connected to the inner wall of the outer baffle 4 .

[0037] Analysis of the above content: Through the setting of the support frame 3, a certain distance can be maintained between the outer baffle plate 4 and the outer wall of the overflow trough 1.

[0038] Embodiment 4:

[0039] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: the overflow trough 1 and the overflow weir triangular plate 2 are made of stainless steel, and the surface of the overflow weir triangular plate 2 is coated with a polytetrafluoroethylene coating.

[0040] Analysis of the above contents: The overflow trough 1 and overflow weir triangular plate 2 made of stainless steel are not easy to rust when used in water and are in a relatively stable state; the surface of the polytetrafluoroethylene coating is smooth and not easy to scale, so the cleaning cycle can be extended.

[0041] Embodiment five:

[0042] See also Figure 1-3 The utility model provides a technical solution based on the first embodiment: the driving mechanism includes a lead screw 8 that is rotatably connected to the overflow tank 1 in a transverse direction, an internal thread sleeve 9 is sleeved on the outer wall of the lead screw 8, the internal thread sleeve 9 is threadedly connected to the lead screw 8, the outer wall of the internal thread sleeve 9 is connected to the cleaning frame 11 on both sides through a support rod 10, one end of the lead screw 8 extends to the outside of the overflow tank 1, and a driving motor 7 connected to the lead screw 8 is arranged on the outside of the overflow tank 1. The driving motor 7 is a waterproof driving motor. The left and right side walls of the support rod 10 are connected to a travel switch 13, and the travel switch 13 is electrically connected to the driving motor 7.

[0043] Analysis of the above content: when the cleaning frame 11 needs to be moved, power is supplied to the drive motor 7 (remote control can also be used to control the opening, closing, and rotation direction of the drive motor 7 through the remote control on the ground), and the drive motor 7 drives the lead screw 8 to rotate. The thread of the lead screw 8 cooperates with the thread of the internal threaded sleeve 9, so that the internal threaded sleeve 9 moves on the lead screw 8. The internal threaded sleeve 9 drives the travel switch 13, the cleaning frame 11, and the cleaning brush 12 to move through the support rod 10. The cleaning brush 12 moves on the surface of the overflow weir triangle plate 2 to scrape and clean the surface of the overflow weir triangle plate 2.

[0044] By setting the travel switch 13, the drive motor 7 can be timely adjusted. Based on the existing electronic control technology of the travel switch 13, the drive motor 7 is controlled to prevent the cleaning frame 11 from continuously moving and colliding with the side wall of the overflow trough 1, thereby avoiding damage to the overflow trough 1, the cleaning frame 11 and other structures.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secondary sedimentation tank sewage overflow device, characterized in that: include: An overflow trough (1), the overflow trough (1) is in the shape of a hollow trough body with an upper opening, the top ends of the front and rear side walls of the overflow trough (1) are both provided with overflow weir triangular plates (2), a water outlet (5) is provided on the lower surface of the overflow trough (1), and the lower side of the water outlet (5) is connected to a water outlet pipe (6); An outer baffle (4), the outer baffle (4) being arranged around the periphery of the overflow trough (1), the upper end of the outer baffle (4) being higher than the upper end of the overflow weir triangular plate (2); A cleaning frame (11), the cleaning frame (11) is in an N-shape, the front and rear side walls inside the cleaning frame (11) are both provided with cleaning brushes (12), the cleaning frame (11) is clamped on the overflow weir triangular plate (2), and the overflow trough (1) is provided with a driving mechanism for moving the cleaning frame (11).

2. A secondary sedimentation tank sewage overflow device according to claim 1, characterized in that: The front and rear side walls of the overflow trough (1) are arranged to be straight or wavy.

3. A secondary sedimentation tank sewage overflow device according to claim 1, characterized in that: A support frame (3) is provided on the outer wall of the overflow trough (1), and the outer end of the support frame (3) is connected to the inner wall of the outer baffle (4).

4. A secondary sedimentation tank sewage overflow device according to claim 1, characterized in that: The overflow trough (1) and the overflow weir triangular plate (2) are made of stainless steel, and the surface of the overflow weir triangular plate (2) is coated with a polytetrafluoroethylene coating.

5. A secondary sedimentation tank sewage overflow device according to claim 1, characterized in that: The driving mechanism comprises a lead screw (8) which is rotatably connected in a transverse direction in an overflow groove (1); an internal thread sleeve (9) is sleeved on the outer wall of the lead screw (8); the internal thread sleeve (9) is threadedly connected to the lead screw (8); the outer wall of the internal thread sleeve (9) is connected to cleaning frames (11) on both sides through a support rod (10); one end of the lead screw (8) extends to the outside of the overflow groove (1); and a driving motor (7) connected to the lead screw (8) is arranged on the outside of the overflow groove (1).

6. A secondary sedimentation tank sewage overflow device according to claim 5, characterized in that: The drive motor (7) is a waterproof drive motor.

7. A secondary sedimentation tank sewage overflow device according to claim 5, characterized in that: The left and right side walls of the support rod (10) are both connected with a travel switch (13), and the travel switch (13) is electrically connected to the drive motor (7).

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