Water outlet device for sedimentation tank

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a water outlet device for a sedimentation tank, which comprises the sedimentation tank, a sewage inlet pipe is arranged on the vertical surface of one side of the sedimentation tank, a plurality of sedimentation conical grooves which are sequentially connected are arranged at the bottom of an inner cavity of the sedimentation tank, and a notch is arranged on the top surface of the sedimentation tank. An effluent treatment mechanism is arranged on the notch; the water outlet treatment mechanism comprises a middle box, a net-shaped structure plate is arranged on one vertical face of the middle box, a flow guide opening is formed in the other vertical face of the middle box, a cleaning unit is arranged in an inner cavity of the middle box, a water outlet groove is formed in the side portion of the sedimentation tank in a connected mode, and a water outlet pipe is arranged at the bottom of an inner cavity of the water outlet groove in a communicated mode. And the bottoms of the inner cavities of the plurality of conical precipitation tanks extend to the outer ends and are inserted with sludge return pipes. According to the utility model, suspended matters generated by part of sewage precipitation are effectively blocked through the net-shaped structure plate, so that some suspended matter particles are prevented from entering the water outlet groove and being discharged, and the water outlet effect is ensured.

Description

Technical Field

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

[0002] The sedimentation tank is equipped with inclined tube fillers. The sewage after aerobic reaction enters the sedimentation tank, where mud and water are separated. The sludge settles into the sludge hopper, and the supernatant is discharged through the outlet trough.

[0003] Since some suspended solids generated by sewage sedimentation will flow out of the sedimentation tank with the flow of liquid, it will have a great impact on the effluent water quality. Especially when the sedimentation time is insufficient, the dosage is unstable, or the water body contains floccules floating on the water surface, the outflowing supernatant contains more suspended solids, causing the effluent water quality of the sedimentation tank to deteriorate and fail to meet national emission standards. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a water outlet device for a sedimentation tank to solve the technical problems raised by the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a water outlet device for a sedimentation tank, comprising a sedimentation tank, a sewage inlet pipe is arranged on one side of the sedimentation tank, a plurality of sequentially connected sedimentation cone grooves are arranged at the bottom of the inner cavity of the sedimentation tank, a notch is arranged on the top surface of the sedimentation tank and on the outside of the sewage inlet pipe, and a water outlet treatment mechanism is arranged on the notch;

[0006] The outlet water treatment mechanism includes an intermediate box arranged at the slot, a mesh structure plate is provided on one vertical surface of the intermediate box, a diversion port is provided on the other vertical surface of the intermediate box opposite to the mesh structure plate, a cleaning unit is provided in the inner cavity of the intermediate box, an outlet trough is provided at the outer end of the intermediate box and connected to the side of the sedimentation tank, an outlet pipe is provided at the bottom of the inner cavity of the outlet trough, and sludge return pipes are provided at the inner cavity bottoms of several sedimentation cone troughs extending to the outer ends.

[0007] Preferably, the cleaning unit includes a slide groove arranged on the top surface of the middle box, a linear screw is horizontally arranged in the slide groove, a support block is arranged on the outside of the upper section of the linear screw, the support block is arranged in the inner cavity of the slide groove, and a brush rack is arranged on the vertical surface of the support block near the mesh structure plate.

[0008] Preferably, the upper and lower ends of the slide groove are arranged through, and the lower end of the slide groove is open and a baffle is arranged on the top of the inner cavity of the middle box.

[0009] Preferably, a fixing frame is provided on the top surface of the sedimentation tank, an electric push rod is provided on one side of the fixing frame, a mounting cross plate is provided on the movable lower end of the electric push rod, and the mounting cross plate and the bottom side of the intermediate box are fixedly arranged, and a movable sleeve is provided on the rear side of the mounting cross plate.

[0010] Preferably, a motor is provided at the outer end of the linear screw.

[0011] Preferably, the outer end of the sludge return pipe is connected to the sewage inlet area.

[0012] Preferably, the bottom surface of the inner cavity of the water outlet trough is provided with an inclined surface.

[0013] By means of the above technical solution, the utility model provides a water outlet device for a sedimentation tank, which has at least the following beneficial effects:

[0014] 1. Due to the arrangement of the intermediate box and the mesh structure plate, the supernatant liquid on the upper part of the utility model will enter the intermediate box through the guide port, and then enter the inner cavity of the water outlet trough through the mesh structure plate installed on one vertical surface of the intermediate box, and be discharged outward through the outlet pipe plugged at the bottom thereof for further treatment. The supernatant liquid entering the inner cavity of the intermediate box will effectively block the suspended matter produced by the precipitation of some sewage under the isolation filtration of the mesh structure plate, thereby preventing some suspended matter particles from entering the water outlet trough and being discharged, thereby ensuring the water outlet effect.

[0015] 2. Due to the arrangement of the cleaning unit, the fixing frame and the electric push rod, the utility model starts the motor by regularly connecting the power supply to drive the linear screw to rotate, so that the support block with the thread matching thereon performs linear reciprocating motion in the inner cavity of the slide groove, and the brush frame assembled on the vertical surface of the support block cleans the residual sedimentary suspended matter blocked by the hole diameter of the end surface of the mesh structure plate. After the cleaning is completed, the electric push rod installed on the fixing frame can be started to move the middle box upward to further process the sedimentary suspended matter cleaned in the inner cavity of the middle box, and the residual sedimentary suspended matter can be processed in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0017] In the attached picture:

[0018] Figure 1 This is a perspective structural diagram of a water outlet device for a sedimentation tank according to the utility model, viewed from the first perspective as a whole;

[0019] Figure 2 This is a perspective structural diagram of a water outlet device for a sedimentation tank according to the utility model, viewed from a second viewing angle as a whole;

[0020] Figure 3 The utility model is a water outlet device for a sedimentation tank Figure 1 Enlarged structural diagram at point A in the middle.

[0021] In the figure: 1. sedimentation tank; 2. sewage inlet pipe; 3. sedimentation cone trough; 4. notch; 5. water outlet treatment mechanism; 51. intermediate box; 52. mesh structure plate; 53. diversion port; 54. slide; 55. linear screw; 56. support block; 57. brush rack; 58. baffle; 59. fixed frame; 510. electric push rod; 6. water outlet trough; 7. water outlet pipe; 8. sludge return pipe. DETAILED DESCRIPTION

[0022] 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.

[0023] Figure 1-Figure 3 This is an embodiment of the utility model: a water outlet device for a sedimentation tank, comprising a sedimentation tank 1, a side elevation of the sedimentation tank 1 is connected to the inside and outside and plugged into a combined sewage inlet pipe 2, a plurality of sequentially connected sedimentation cone grooves 3 are welded at the bottom of the inner cavity of the sedimentation tank 1, and particulate matter that sinks to the bottom of the sewage by gravity is collected through the sedimentation cone grooves 3, and a notch 4 is formed through the top surface of the sedimentation tank 1 and relative to the outside of the sewage inlet pipe 2, and a water outlet treatment mechanism 5 is provided on the notch 4;

[0024] The effluent treatment mechanism 5 includes an intermediate box 51 that fits in the slot 4, a mesh structure plate 52 is screwed onto one vertical surface of the intermediate box 51, a diversion port 53 is provided on the other vertical surface of the intermediate box 51 opposite to the mesh structure plate 52, a cleaning unit is installed in the inner cavity of the intermediate box 51, the outer end of the intermediate box 51 is connected to an integrally formed water outlet trough 6 at the side of the sedimentation tank 1, the inner cavity bottom of the water outlet trough 6 is connected to a combined water outlet pipe 7, and the inner cavity bottoms of several sedimentation cone troughs 3 extend to the outer ends to be plugged and installed with a sludge return pipe 8.

[0025] The cleaning unit includes a slide 54 arranged on the top surface of the intermediate box 51, a linear screw 55 is horizontally installed in the slide 54, a section of external thread on the linear screw 55 cooperates with a rotating combined support block 56, the support block 56 is slidably assembled in the inner cavity of the slide 54, and the vertical buckle assembly combined brush frame 57 near the mesh structure plate 52 on the support block 56; the upper and lower ends of the slide 54 are designed to be through-through, the lower end of the slide 54 is through-opening and a baffle 58 is integrally formed on the top of the inner cavity of the intermediate box 51, and the lower inclined surface of the baffle 58 can block sludge particles and close the lower end of the slide 54 to prevent sewage from overflowing through the slide 54; the top surface of the sedimentation tank 1 is externally bolted to install a fixing frame 59, and one side of the fixing frame 59 is bolted to fix an electric push rod 510, and the movable lower end of the electric push rod 510 is bolted to fix and connect the installation cross plate, and the installation cross plate and The bottom side of the middle box 51 is integrally formed, and the rear bolts of the horizontal plate are used to install the movable sleeve, and the upper end of the movable sleeve is fixedly connected to the fixed frame 59 by bolts; the outer end of the linear screw 55 is installed with a motor, and the output end of the motor is fixedly connected to the linear screw 55 through a coupling; the outer end of the sludge return pipe 8 is connected to the sewage inlet area, and after the sludge is extracted from the bottom of the sedimentation cone trough 3, it circulates through the water flow inside the sedimentation tank 1, and then flows back to the water inlet area to mix with the new sewage to be treated. The main purpose of this treatment method is to improve the biochemical treatment capacity and stability of the sewage treatment system, reduce load fluctuations and prolonged reaction time during the treatment process, and also reduce the cost of treatment equipment and energy consumption; the bottom surface of the inner cavity of the water outlet trough 6 is provided with an inclined surface, and the inclined surface forms a guide surface for the supernatant to be discharged.

[0026] The specific implementation process of this embodiment is as follows: when in use, the sewage that has undergone aerobic reaction is introduced into the sedimentation tank 1 through the sewage inlet pipe 2, and then the sewage will stay in the inner cavity of the sedimentation tank 1 for a period of time. Since the flow rate in the sedimentation tank 1 is slow, the water flow retention time increases, and the gravity causes most of the suspended matter and particulate matter to gradually settle to the bottom of the tank and gather and collect at the bottom of the inner cavity of the sedimentation cone groove 3, and the upper supernatant liquid will enter the intermediate box 51 through the guide port 53, and then pass through the mesh structure plate 52 installed on one vertical surface of the intermediate box 51 into the inner cavity of the water outlet trough 6 and be discharged outward through the outlet pipe 7 plugged at the bottom thereof for further treatment, wherein the supernatant entering the inner cavity of the intermediate box 51 will block the suspended matter generated by the precipitation of some sewage under the isolation filtration of the mesh structure plate 52;

[0027] After blocking, the power is turned on regularly to start the motor, driving the linear screw 55 to rotate, so that the support block 56 with the thread on it performs linear reciprocating motion in the inner cavity of the slide groove 54, and the brush rack 57 assembled on the vertical surface of the support block 56 cleans the residual sediment and suspended matter blocked by the hole diameter of the end surface of the mesh structure plate 52. After cleaning, the electric push rod 510 installed on the fixed frame 59 can be started to move the intermediate box 51 upward, so as to facilitate further processing of the sediment and suspended matter cleaned in the inner cavity of the intermediate box 51.

[0028] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0029] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0030] 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 water outlet device for a sedimentation tank, comprising a sedimentation tank (1), a sewage inlet pipe (2) being arranged on one side of the sedimentation tank (1), and a plurality of sequentially connected sedimentation cone grooves (3) being arranged at the bottom of the inner cavity of the sedimentation tank (1), characterized in that: A notch (4) is provided on the top surface of the sedimentation tank (1) and on the outer side of the sewage inlet pipe (2), and a water outlet treatment mechanism (5) is provided on the notch (4); The effluent treatment mechanism (5) comprises an intermediate box (51) arranged at the slot (4); a mesh structure plate (52) is arranged on one vertical surface of the intermediate box (51); a flow guide port (53) is arranged on the other vertical surface of the intermediate box (51) opposite to the mesh structure plate (52); a cleaning unit is arranged in the inner cavity of the intermediate box (51); an outlet trough (6) is arranged at the outer end of the intermediate box (51) and connected to the side of the sedimentation tank (1); an outlet pipe (7) is arranged at the bottom of the inner cavity of the outlet trough (6); and sludge return pipes (8) are arranged on the inner cavity bottoms of a plurality of the sedimentation cone troughs (3) extending to the outer ends.

2. A water outlet device for a sedimentation tank according to claim 1, characterized in that: The cleaning unit comprises a slide groove (54) arranged on the top surface of the middle box (51), a linear screw (55) is horizontally arranged in the slide groove (54), a support block (56) is arranged on the outside of the upper section of the linear screw (55), the support block (56) is arranged in the inner cavity of the slide groove (54), and a brush frame (57) is arranged on the vertical surface of the support block (56) near the mesh structure plate (52).

3. A water outlet device for a sedimentation tank according to claim 2, characterized in that: The upper and lower ends of the slide groove (54) are arranged through, and the lower end of the slide groove (54) is open and a baffle (58) is arranged on the top of the inner cavity of the middle box (51).

4. A water outlet device for a sedimentation tank according to claim 1, characterized in that: The top surface of the sedimentation tank (1) is provided with a fixing frame (59), one side of the fixing frame (59) is provided with an electric push rod (510), the movable lower end of the electric push rod (510) is provided with a mounting cross plate, and the mounting cross plate and the bottom side of the intermediate box (51) are fixedly arranged, and the rear side of the mounting cross plate is provided with a movable sleeve.

5. A water outlet device for a sedimentation tank according to claim 2, characterized in that: The outer end of the linear screw (55) is provided with a motor.

6. A water outlet device for a sedimentation tank according to claim 1, characterized in that: The outer end of the sludge return pipe (8) is connected to the sewage inlet area.

7. A water outlet device for a sedimentation tank according to claim 1, characterized in that: The inner bottom surface of the water outlet trough (6) is provided with an inclined surface.

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