Device for eliminating deposited sludge of sedimentation tank

Abstract

The utility model relates to a device for eliminating deposited sludge in a sedimentation tank, which comprises a sedimentation tank, a pumping sludge discharge system and a pulse circulation system, the pumping sludge discharge system comprises a sludge discharge pipe, a sludge discharge valve, a sludge discharge pump, a residual sludge pipe and a return valve, and the pulse circulation system comprises a backflushing pipeline, a pulse controller and a plurality of backflushing pipe branches; a sludge inlet pipe is arranged in the sedimentation tank, the sludge inlet pipe is communicated with a sludge discharge pipe through a sludge discharge pump, the sludge discharge pipe is respectively communicated with a residual sludge pipe and a backflushing pipeline, a sludge discharge valve is arranged between the sludge discharge pipe and the residual sludge pipe, and a return valve is arranged between the sludge discharge pipe and the backflushing pipeline; the back-flushing pipeline is communicated with a plurality of back-flushing pipe branches, and the tail parts of the back-flushing pipe branches extend to the bottom of the sedimentation tank. According to the utility model, a dead angle area at the bottom of the sedimentation tank can be avoided, the phenomena of dead mud and floating mud are effectively reduced, and accumulated mud of the sedimentation tank can be effectively eliminated; different requirements can be met, and meanwhile the purpose of effectively saving energy is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment technical field, concretely relates to a kind of eliminate sludge device of sedimentation tank. BACKGROUND

[0002] With the development of sewage treatment industry, sedimentation tank is essential sewage treatment facility of traditional process and now developed new technology, and peripheral drive mud scraper is used in large sewage sedimentation tank, however, small and medium-sized sedimentation tank cannot install drive mud scraper or the reason such as higher cost.

[0003] The existing small and medium-sized sedimentation tank sludge discharge device has the following shortcomings: because the sludge discharge pump inlet pipe is only connected to the center of the bottom of the sedimentation tank, the dead angle area is large, and there is a lot of accumulated sludge, which can easily ferment and float after a long time of accumulation, seriously affecting the sedimentation effect and water quality. If gas backwashing is used, the accumulated sludge at the bottom can be easily carried out to the water surface with gas. In view of the shortcomings of the prior art, the utility model discloses a kind of eliminate sludge device of sedimentation tank to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings in the prior art, the utility model provides a kind of eliminate sludge device of sedimentation tank.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of eliminate sludge device of sedimentation tank, the device includes sedimentation tank, pumping sludge discharge system and pulse circulation system, the pumping sludge discharge system includes sludge discharge pipe, sludge discharge valve, sludge discharge pump, residual sludge pipe and backflow valve, the pulse circulation system includes backflushing pipe, pulse control instrument and several backflushing pipe branches;The inlet pipe is provided in the sedimentation tank, the inlet pipe is communicated with sludge discharge pipe by sludge discharge pump, the sludge discharge pipe is communicated with residual sludge pipe and backflushing pipe respectively, the sludge discharge valve is arranged between the sludge discharge pipe and residual sludge pipe, and the backflow valve is arranged between the sludge discharge pipe and backflushing pipe;The backflushing pipe is communicated with several backflushing pipe branches, and the tail of the backflushing pipe branch extends to the bottom of the sedimentation tank.

[0007] The utility model sucks sludge at the center position of the bottom of the sedimentation tank by sludge discharge pump, and the outlet is divided into two ways, one way is pumped to sludge pool, and the other way is backflowed to pulse circulation system.

[0008] As a preferred, the backflushing pipe and the backflushing pipe branch are provided with corresponding branch valve.

[0009] As a preferred, the pulse control instrument controls each branch valve.

[0010] As a preferred, the first regulating valve is arranged between the inlet pipe and the sludge discharge pump, and the second regulating valve is arranged between the sludge discharge pump and the sludge discharge pipe.

[0011] The adjustable manual valve is arranged in front of and behind the sludge pump, and the pipeline behind the sludge pump is divided into two paths, one of which is a sludge discharge pipe, and the other is a backflushing pipeline.

[0012] Preferably, the sedimentation tank is a conical structure, and the angle between the slope and the horizontal direction is greater than 45 degrees. The backflushing pipe branches are arranged along the sedimentation tank to provide sufficient power guarantee during backflushing.

[0013] Preferably, the sludge pump is a horizontal centrifugal pump or a vertical centrifugal pump.

[0014] Preferably, the backflushing pipe branches are installed at a distance of 50-100 cm from the inlet of the sludge inlet pipe.

[0015] Preferably, the number of backflushing pipe branches is four, and they are evenly distributed around the sedimentation tank. The backflushing pipe branches are evenly installed in the dead corner area of the bottom of the sedimentation tank to stir the dead sludge and effectively reduce the phenomenon of dead sludge and floating sludge.

[0016] Preferably, the pulse control instrument is provided with a pulse parameter setting area. The pulse period, backflushing time and sludge discharge time can be adjusted and set through the pulse parameter setting area.

[0017] The beneficial effects of the present application are as follows:

[0018] The present application can avoid the dead corner area of the bottom of the sedimentation tank, and the backflushing pipe and backflushing pipe branches can impact the accumulated sludge in the dead corner area in stages, which can effectively reduce the phenomenon of dead sludge and floating sludge and realize effective elimination of the accumulated sludge in the sedimentation tank. The pulse period, backflushing time and sludge discharge time can be adjusted according to the different settling rates of sludge with different properties to meet different requirements. The pulse control system can periodically flush to reduce the operation time of the sludge pump and achieve the purpose of energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the present application. DETAILED DESCRIPTION

[0020] The present application will be further described below in combination with the drawings and specific embodiments, but the protection scope of the present application is not limited thereto.

[0021] Reference Figure 1The utility model provides a kind of sludge removal device for sedimentation tank, the device includes sedimentation tank 1, pumping sludge removal system and pulse circulation system, the pumping sludge removal system includes sludge removal pipe 11, sludge removal valve 4, sludge removal pump 7, residual sludge pipe 12 and backflow valve 3, the pulse circulation system includes backflushing pipe line 13, pulse control instrument 8 and several backflushing pipe branch 2;Sludge inlet pipe 10 is equipped in the sedimentation tank, the sludge inlet pipe 10 is communicated with sludge removal pipe 11 by sludge removal pump 7, sludge removal pipe 11 is communicated with residual sludge pipe 12 and backflushing pipe line 13 respectively, sludge removal valve 4 is equipped between sludge removal pipe 11 and residual sludge pipe 12, backflow valve 3 is equipped between sludge removal pipe 11 and backflushing pipe line 13;Backflushing pipe line 13 is communicated with several backflushing pipe branch 2, and backflushing pipe branch 2 tail extends to the bottom of sedimentation tank.The utility model pumps sludge in the bottom center position of sedimentation tank by sludge removal pump 7, and outlet is divided into two ways, one way is pumped to sludge pool, and the other way is backflowed to pulse circulation system.

[0022] Backflushing pipe line 13 and backflushing pipe branch 2 are equipped with corresponding branch valve 14, and pulse control instrument 8 controls each branch valve.Pulse parameter setting area 9 is equipped on pulse control instrument 8.Pulse period, backflushing time and sludge removal time etc.

[0023] First regulating valve 5 is equipped between sludge inlet pipe 10 and sludge removal pump 7, and second regulating valve 6 is equipped between sludge removal pump 7 and sludge removal pipe 11.Adjustable hand valve is equipped before and after sludge removal pump, and pipeline is divided into two ways after sludge removal pump, one way is sludge removal pipe, and the other way is backflushing pipe line.

[0024] The sedimentation tank is conical structure, and the angle between inclined plane and horizontal direction is greater than 45 degrees.Backflushing pipe branch is arranged along the sedimentation tank, so that enough power guarantee can be provided during backflushing.

[0025] The sludge removal pump is horizontal centrifugal pump or vertical centrifugal pump.

[0026] Backflushing pipe branch 2 tail is installed at a distance of 50cm from sludge inlet pipe import.The distance can effectively avoid dead angle during backflushing.

[0027] The number of backflushing pipe branch 2 is four, and they are evenly distributed around the sedimentation tank.Backflushing pipe branch is evenly installed in the dead angle area of the bottom of sedimentation tank, and dead sludge is effectively reduced by hydraulic agitation.

[0028] The sludge pump 7 discharges the sludge in the sedimentation tank through the sludge inlet pipe 10, the sludge discharge pipe 11 and the residual sludge pipe 12, but the sedimentation tank has a dead corner area, and the dead sludge cannot be discharged. The device can be provided with a backflush pipe 13 at the sludge discharge pipe, and the backflow valve 3 and the sludge valve 4 control the backflow state or the sludge discharge state. When discharging the sludge, the backflow valve 3 is closed; when backflowing, the backflow valve 3 is always opened, and the sludge valve 4 is always closed. Meanwhile, the pulse control instrument 8 of the pulse control system controls the four-way branch valve 14, and the four-way branch valve 14 is opened in turn and periodically, and the cycle time and the opening time can be adjusted through the pulse parameter setting area 9 on the pulse control instrument 8. After the branch valve 14 is opened, the bottom dead corner area of the sedimentation tank is backflushed in turn through the backflush pipe branch 2, the dead sludge is hydraulically agitated, and the phenomenon of the dead sludge and the floating sludge is effectively reduced.

[0029] The device can effectively avoid the bottom dead corner area of the sedimentation tank, backflush the accumulated sludge in the bottom dead corner area in stages, effectively reduce the phenomenon of the dead sludge and the floating sludge, effectively eliminate the accumulated sludge in the sedimentation tank, periodically flush through the pulse control system, reduce the operation time of the sludge pump, effectively save the electric energy, adjust the sludge discharge and backflush time through the pulse cycle and the backflush time according to the different settling rates of the sludge with different properties, and meet different requirements.

[0030] The above specific embodiment is used for explaining and illustrating the device, rather than limiting the device, and any modification and change made to the device within the spirit and the protection scope of the claims falls into the protection scope of the device.

Claims

1. A device for eliminating sludge accumulation in a sedimentation basin, characterized in that: The device comprises a sedimentation tank, a pumping sludge discharge system and a pulse circulation system, the pumping sludge discharge system comprises a sludge discharge pipe, a sludge discharge valve, a sludge discharge pump, a residual sludge pipe and a backflow valve, the pulse circulation system comprises a backflushing pipe line, a pulse control instrument and a plurality of backflushing pipe branches; the sedimentation tank is provided with a sludge inlet pipe, the sludge inlet pipe is connected with the sludge discharge pipe through the sludge discharge pump, the sludge discharge pipe is connected with the residual sludge pipe and the backflushing pipe line respectively, the sludge discharge pipe is provided with the sludge discharge valve between the sludge discharge pipe and the residual sludge pipe, and the sludge discharge pipe is provided with the backflow valve between the sludge discharge pipe and the backflushing pipe line; the backflushing pipe line is connected with the plurality of backflushing pipe branches, and the backflushing pipe branches extend to the bottom of the sedimentation tank.

2. The device for removing sludge accumulated in a sedimentation basin according to claim 1, wherein: The backflushing pipe line is provided with corresponding branch valves between the backflushing pipe line and the backflushing pipe branches.

3. The apparatus of claim 2, wherein: The pulse control instrument controls the branch valves.

4. The apparatus of claim 1, wherein: The sludge inlet pipe is provided with a first regulating valve between the sludge inlet pipe and the sludge discharge pump, and the sludge discharge pump is provided with a second regulating valve between the sludge discharge pump and the sludge discharge pipe.

5. The apparatus of claim 1, wherein: The sedimentation tank is a conical structure, and the angle between the inclined surface and the horizontal direction is greater than 45 degrees.

6. The apparatus of claim 1, wherein: The sludge discharge pump is a horizontal centrifugal pump or a vertical centrifugal pump.

7. The apparatus of claim 1, wherein: The backflushing pipe branches are installed at a distance of 50-100 cm from the inlet of the sludge inlet pipe.

8. The device for removing sludge accumulated in a sedimentation basin according to claim 1, wherein: The number of the backflushing pipe branches is four, and the backflushing pipe branches are evenly distributed around the sedimentation tank.

9. The device for removing sludge accumulated in a sedimentation basin according to claim 1, wherein: The pulse control instrument is provided with a pulse parameter setting area.

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