CN217549078U

CN217549078U - Automatic back-blowing device for accumulated mud in horizontal flow type sedimentation tank

Info

Publication number: CN217549078U
Application number: CN202220872591.1U
Authority: CN
Inventors: 张森; 王玉明; 卜凡刚; 王洪刚; 候建利
Original assignee: Everbright Water Binzhou Co ltd
Current assignee: Everbright Water Binzhou Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-10-11
Anticipated expiration: 2032-04-15

Abstract

The utility model discloses an automatic blowback device of laminar flow sedimentation tank long-pending mud, including the pool wall, the assembly mouth has been seted up to the bottom of pool wall, the assembly mouth internal seal is equipped with the aeration shell, spacing airtight sliding connection has the aeration inner shell in the inherent vertical direction of aeration shell, aeration shell ring has been seted up many vertical aeration outer holes, adjacent two in the same vertical the vertical interval in aeration outer hole is greater than the internal diameter in aeration outer hole, the aeration hole has been seted up one by one in the corresponding position in each aeration outer hole to the aeration inner shell, the outer wall of aeration shell just installs the non return piece in each aeration outer hole department. The utility model discloses the position of aeration hole for the aeration outer orifice is adjusted to the accessible to change the dissolved oxygen volume in the unit interval, avoid appearing mud and lead to out the condition that the weir board blockked up, influence the effect of yielding water because of the long-pending mud come-up in bottom effectively solving, reduce the artifical work load of clearing up the floating mud every day simultaneously because of the oxygen deficiency corruption.

Description

Automatic back-blowing device for accumulated mud in horizontal flow type sedimentation tank

Technical Field

The utility model relates to a sewage treatment technical field especially relates to automatic blowback device of long-pending mud of advection type sedimentation tank.

Background

The advection type sedimentation tank consists of a water inlet, a water outlet, a water flow part and a sludge hopper. The plane of the pool body is rectangular, the inlet and the outlet are respectively arranged at two ends of the pool, the inlet is generally submerged into the water inlet, water flows into the pool body from the water inlet channel through the water inlet holes which are uniformly distributed, and the baffle is arranged behind the water inlet holes, so that the water flow is uniformly distributed on the cross section of the whole pool width; the outlet is provided with an overflow weir to ensure that settled clarified water can flow into the water outlet channel uniformly along the width of the pool. A scum groove and a baffle are arranged in front of the weir to intercept scum on the water surface. The water flow part is the main body of the pool, the width and the depth of the pool ensure that the water flow is distributed uniformly along the water passing section of the pool and slowly and stably flows through the pool according to the designed flow rate. The sludge hopper is used for accumulating precipitated sludge and is mostly arranged below the tank bottom at the front part of the tank, and the hopper bottom is provided with a sludge discharge pipe for periodically discharging the sludge.

The horizontal-flow sedimentation tank causes anaerobic decomposition of sludge due to oxygen deficiency in daily operation to generate methane and carbon dioxide gas, the sludge adsorbs gas to float upwards, so that the effluent weir plate is blocked, the effluent effect is influenced, and the workload of manually cleaning the floating mud every day is increased. The solution is to increase the aeration oxygen supply amount, improve the dissolved oxygen of the effluent, reduce the retention time of the sludge in the secondary sedimentation tank and drain the residual sludge in time.

The size of air bubbles exposed from the air of the conventional device is fixed, the size of the air bubbles entering the pool cannot be adjusted, and the size of the bubbles determines the dissolved oxygen amount, namely the dissolved oxygen amount in unit time cannot be adjusted.

Therefore, an automatic back-blowing device for accumulated mud in the horizontal sedimentation tank is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is anticipated that the automatic blowback device of long-pending mud of advection formula sedimentation tank is in order to solve the problem that proposes in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic back-blowing device for accumulated mud in a horizontal sedimentation tank comprises a tank wall, wherein an assembly opening is formed in the bottom end of the tank wall, an aeration outer shell is assembled in the assembly opening in a sealing mode, a limiting airtight sliding connection is formed in the aeration outer shell in the vertical direction, a plurality of longitudinal aeration outer holes are annularly formed in the aeration outer shell, the vertical distance between every two adjacent longitudinal aeration outer holes is larger than the inner diameter of each aeration outer hole, aeration inner holes are formed in the aeration inner shell in the corresponding positions of the aeration outer holes one by one, a check piece is installed on the outer wall of the aeration outer shell and at each aeration outer hole, an electric telescopic rod is fixedly installed at the top end of the inner end of the aeration outer shell, the telescopic end of the electric telescopic rod is fixedly connected with the upper end of the aeration inner shell, an opening is formed in the lower end of the aeration inner shell and communicated with a corrugated pipe, a diameter-gradually-changing pipe communicated with the corrugated pipe is embedded at the lower end of the aeration outer shell, the inner diameter-changing pipe is linearly reduced from top to bottom, an aeration pipe is communicated with an aeration pipe, the lower end of the gradually-changing pipe is connected with an electromagnetic valve, and an electromagnetic valve is installed on the aeration pipe.

Preferably, the outer side of the lower end of the aeration shell is connected with a flange device, and the aeration shell is fixedly connected with the pool wall in a sealing way by using the flange device.

Preferably, a plurality of guide strips are fixedly connected to the outer surface of the aeration inner shell in an annular manner, and guide grooves which are connected with the guide strips in a one-to-one sliding manner are formed in the inner wall of the aeration outer shell.

Preferably, the longitudinal width of the guide groove is larger than the sum of the longitudinal length of the guide strip and twice the inner diameter of the aeration inner hole.

Preferably, the stroke of the electric telescopic rod is larger than the sum of the inner diameter of the aeration inner hole and the vertical distance between two adjacent aeration inner holes.

Preferably, the air pump and the electromagnetic valve are electrically connected with a timing start-stop controller.

Preferably, the lower end of the aeration inner shell is fixedly connected with a dissolved oxygen reaction rod, and the lower end of the dissolved oxygen reaction rod penetrates through the aeration outer shell.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the accessible is adjusted the position of aeration hole for the aeration outer hole to change the dissolved oxygen volume in the unit interval, avoid appearing mud and rotten because of the oxygen deficiency, can effectively solve because of the long-pending mud come-up in bottom leads to going out the condition that the weir board blockked up, influences the effect of yielding water, reduce the artifical work load of clearing up the floating mud every day simultaneously.

Drawings

FIG. 1 is a schematic three-dimensional structure diagram of an automatic back-flushing device for accumulated mud in a horizontal sedimentation tank of the utility model;

FIG. 2 is a schematic structural view of a cross section of the automatic back-blowing device for accumulated mud in the horizontal sedimentation tank, which is partially three-dimensional;

fig. 3 is a front view structural section of the horizontal sedimentation tank automatic back-flushing device.

In the figure: 1, 2, 21, 3, 31, 4-flange devices, 5 electric telescopic rods, 6 corrugated pipes, 7 tapered pipes, 8, 9, 10 air pumps, 11 timing on-off controllers, 12 non-return pieces, 13 dissolved oxygen reaction rods, 14 guide strips and 15 guide grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, automatic blowback device of advection type sedimentation tank amasss mud, including pool wall 1, the assembly opening has been seted up to the bottom of pool wall 1, and the sealed aeration shell 2 that is equipped with in the assembly opening, and aeration shell 2 lower extreme outside is connected with flange device 4, and aeration shell 2 uses flange device 4 and pool wall 1 sealed fixed connection, and flange device 4 is prior art, takes seal structure (sealed pad) certainly, and aeration shell 2 size agrees with the assembly opening.

Spacing airtight sliding connection has aeration inner shell 3 in the aeration shell 2 inherent vertical direction, and aeration outer shell 2 annular has been seted up many longitudinals aeration outer hole 21, and the perpendicular interval with two adjacent aeration outer holes 21 in the longitudinals is greater than the internal diameter of aeration outer hole 21, and this is one of rigid condition, in order to ensure that aeration shell 2 can shutoff aeration hole 31, aeration inner shell 3 has seted up aeration hole 31 in the corresponding position of each aeration outer hole 21 one by one, and aeration outer hole 21 is the same with aeration hole 31's size, the utility model discloses flexible aeration inner shell 3 in vertical direction, the dissolved oxygen volume in order to adjust the unit interval through the size that changes aeration hole 31 and the aeration outer hole 21 intercommunication area of corresponding position.

The specific limiting sliding connection is as follows: a plurality of guide strips 14 are fixedly connected to the outer surface of the aeration inner shell 3 in an annular mode, guide grooves 15 which are connected with the guide strips 14 in a one-to-one sliding mode are formed in the inner wall of the aeration outer shell 2, and in the axial moving process of the aeration inner shell 3 relative to the aeration outer shell 2, the guide strips 14 also slide in the guide grooves 15 at the same time so as to enhance the stability of the axial sliding of the aeration inner shell 3.

The longitudinal width of the guide groove 15 is larger than the sum of the longitudinal length of the guide strip 14 and twice the inner diameter of the aeration inner hole 31. This is the second hard condition, so that the aeration inner hole 31 and the aeration outer hole 21 corresponding to the position can be completely communicated or not communicated.

The non-return piece 12 is installed on the outer wall of the aeration outer shell 2 and at each aeration outer hole 21, and the non-return piece 12 is a structural component in the prior art, such as a non-return device of a microporous aerator disclosed in CN208135948U, so as to avoid the situation that muddy water flows back into the aeration inner shell 3 when the air pump 10 is stopped.

The inner top end of the aeration outer shell 2 is fixedly provided with an electric telescopic rod 5, the telescopic end of the electric telescopic rod 5 is fixedly connected with the upper end of the aeration inner shell 3, the stroke of the electric telescopic rod 5 is larger than the sum of the inner diameter of the aeration inner hole 31 and the vertical distance between two adjacent aeration inner holes 31, the sum is the third of the rigid condition, the electric telescopic rod 5 axially moves relative to the aeration outer shell 2 through the telescopic aeration inner shell 3, and the position of the aeration inner hole 31 relative to the aeration outer hole 21 changes.

The lower extreme of aeration inner shell 3 is equipped with opening and opening part intercommunication and has bellows 6, adapts to up-and-down motion's aeration inner shell 3, the lower extreme of aeration outer shell 2 inlays and is equipped with the gradual change footpath pipe 7 with bellows 6 intercommunication, gradual change footpath pipe 7 reduces from last to linear of internal diameter, the lower extreme intercommunication of gradual change footpath pipe 7 has aeration pipe 8, the aeration pipe 8 other end is connected with air pump 10, the inlet end of air pump 10 links to each other with the atmosphere, install solenoid valve 9 on the aeration pipe 8, use the utility model discloses when carrying out the aeration operation, open solenoid valve 9, air pump 10 passes through aeration pipe 8, gradual change footpath pipe 9, bellows 6 is to 3 pump sending air of aeration inner shell to aerate on the pool wall 1 through the intercommunication portion of aeration hole 31 and aeration outer hole 21, in order to increase dissolved oxygen volume, avoid sludge digestion, the condition of jam go up-and go up the play weir.

The lower end of the aeration inner shell 3 is fixedly connected with a dissolved oxygen reaction rod 13, and the lower end of the dissolved oxygen reaction rod 13 penetrates through the aeration outer shell 2. The technician can know the dissolved oxygen amount per unit time by observing the position of the aeration inner hole 31 relative to the aeration outer hole 21 through the portion of the dissolved oxygen reaction rod 13 protruding from the aeration housing 2.

The air pump 10 and the electromagnetic valve 9 are electrically connected with a timing start-stop controller 11, and in addition, the air pump 10 and the electromagnetic valve 9 can be started and stopped at regular time through the timing start-stop controller 11, so that the frequent and frequent times of aeration can be adjusted according to the actual running condition.

The utility model discloses the accessible is adjusted the position of aeration hole 31 for aeration outer hole 21 to change the dissolved oxygen volume in the unit interval, avoid appearing mud and lead to out the condition that the weir plate blockked up, influence the effect of going out water because of the long-pending mud come-up in bottom effectively solving because of the oxygen deficiency corruption, reduce the artifical work load of clearing up the floating mud every day simultaneously.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Automatic blowback device of advection formula sedimentation tank amasss mud, including pool wall (1), its characterized in that: the bottom end of the tank wall (1) is provided with an assembly port, an aeration shell (2) is hermetically assembled in the assembly port, an aeration inner shell (3) is connected with the aeration outer shell (2) in a limiting airtight sliding way in the vertical direction, the aeration shell (2) is annularly provided with a plurality of longitudinal aeration outer holes (21), the vertical distance between two adjacent aeration outer holes (21) in the same longitudinal direction is larger than the inner diameter of the aeration outer holes (21), aeration inner holes (31) are respectively arranged at the corresponding positions of the aeration outer holes (21) of the aeration inner shell (3), the outer wall of the aeration shell (2) is provided with a check piece (12) at each aeration outer hole (21), an electric telescopic rod (5) is fixedly arranged at the inner top end of the aeration shell (2), and the telescopic end of the electric telescopic rod (5) is fixedly connected with the upper end of the aeration inner shell (3), the lower end of the aeration inner shell (3) is provided with an opening which is communicated with a corrugated pipe (6), the lower end of the aeration shell (2) is embedded with a gradual change diameter pipe (7) communicated with the corrugated pipe (6), the inner diameter of the gradual change diameter pipe (7) is linearly reduced from top to bottom, the lower end of the gradual change diameter pipe (7) is communicated with an aeration pipe (8), the other end of the aeration pipe (8) is connected with an air pump (10), and an electromagnetic valve (9) is installed on the aeration pipe (8).

2. The automatic back flushing device for the accumulated mud in the advection type sedimentation tank according to claim 1, which is characterized in that: the outer side of the lower end of the aeration shell (2) is connected with a flange device (4), and the aeration shell (2) is fixedly connected with the pool wall (1) in a sealing way by using the flange device (4).

3. The automatic back flushing device for the accumulated mud in the advection type sedimentation tank according to claim 1, which is characterized in that: the outer surface of the aeration inner shell (3) is fixedly connected with a plurality of guide strips (14) in an annular mode, and guide grooves (15) which are connected with the guide strips (14) in a one-to-one sliding mode are formed in the inner wall of the aeration outer shell (2).

4. The automatic back flushing device for accumulated mud in the horizontal flow type sedimentation tank of claim 3, which is characterized in that: the longitudinal width of the guide groove (15) is larger than the sum of the longitudinal length of the guide strip (14) and twice of the inner diameter of the aeration inner hole (31).

5. The automatic back flushing device for the accumulated mud in the advection type sedimentation tank according to claim 1, which is characterized in that: the stroke of the electric telescopic rod (5) is larger than the sum of the inner diameter of the aeration inner hole (31) and the vertical distance between two adjacent aeration inner holes (31).

6. The automatic back flushing device for accumulated mud in the horizontal flow type sedimentation tank of claim 1, which is characterized in that: the air pump (10) and the electromagnetic valve (9) are electrically connected with a timing start-stop controller (11).

7. The automatic back flushing device for accumulated mud in the horizontal flow type sedimentation tank of claim 1, which is characterized in that: the lower extreme fixed connection of aeration inner shell (3) has dissolved oxygen volume reaction rod (13), and the lower extreme of dissolved oxygen volume reaction rod (13) runs through aeration shell (2) and sets up.