CN213623790U

CN213623790U - Sludge concentration device

Info

Publication number: CN213623790U
Application number: CN202022472519.3U
Authority: CN
Inventors: 周安; 龚仁达
Original assignee: Jiangsu Pulisu Environmental Protection Technology Co ltd
Current assignee: Jiangsu Pulisu Environmental Protection Technology Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-06
Anticipated expiration: 2030-10-30

Abstract

A sludge concentration device is mainly used for the concentration treatment of sludge, which comprises a concentration tank, a central shaft tube, a water inlet tube, a suction tube, a water outlet tube, a control cabinet and a valve, wherein the upper part of the concentration tank is a cylinder, the top of the concentration tank is open, the bottom of the concentration tank is an inverted frustum, the central shaft tube is arranged in the central axis of the tank body of the concentration tank, the upper end of the central shaft tube penetrates out of the top surface of the concentration tank to be connected with the water inlet tube, the lower end of the central shaft tube extends into the inverted frustum at the bottom of the concentration tank and is separated from the bottom end surface, the outlet end of the frustum at the bottom of the concentration tank is provided with the valve, the control cabinet is arranged on the upper part of the side wall of the outer part of the concentration tank, the top surface of the control cabinet is higher than the top surface of the concentration tank, the outer side wall of the lower part of the suction pipe is provided with a sludge concentration on-line instrument. The device has simple structure, low energy consumption and short concentration period.

Description

Sludge concentration device

Technical Field

The utility model relates to a sewage treatment field specifically is used for sludge thickening to handle.

Background

In the sewage treatment process, the surplus sludge is produced in the necessary condition, the water content of the sludge is high, and the dehydration treatment can not be carried out without concentration treatment. The existing concentration equipment mainly comprises three types, namely gravity concentration, air flotation concentration and mechanical concentration, wherein the energy consumption of the gravity concentration is far lower than that of the other two types, and the operation requirement is simple, so that the gravity concentration equipment is widely applied to sewage plants.

The utility model relates to a sludge concentration tank disclosed in the prior patent (application number: CN 201610264811.1), which comprises a tank body, wherein the upper part and the lower part of the tank body are respectively communicated with a water inlet pipeline and a sludge outlet pipeline; the innovation points are as follows: an inverted bucket-shaped reflecting plate is arranged under the water outlet of the water inlet pipeline. The utility model discloses an advantage lies in establishing the fill reflecting plate of inversion through inlet tube delivery port below, reduces the decurrent impact of muddy water to make muddy water even to the dispersion all around, reduce the required standing time of concentration, improve concentration efficiency. The device adopts the reflecting folded plate to reduce the impact on the lower settled sludge, but still disturbs the settled sludge when discharging the supernatant, thus causing the concentration of suspended matters in the effluent to be too high.

Disclosure of Invention

The utility model aims at providing a sludge concentration device with simple structure, energy consumption saving and short working period aiming at the defects of the prior device.

In particular to a sludge concentration device which comprises a concentration tank, a central shaft tube, a water inlet tube and a suction tube, the outlet pipe, the switch board, the valve, concentrated jar upper portion is the cylinder, the top is uncovered, the bottom is the radius frustum, the internal center line position of jar of concentrated jar is equipped with a central axis pipe, the inlet tube is connected to the central axis pipe upper end wearing out concentrated jar top surface, the interval is left with the bottom face in the radius frustum that extends concentrated jar bottom to the lower extreme, the round frustum exit end of concentrated jar bottom is equipped with a valve, the switch board is installed on concentrated jar outer side wall upper portion, the switch board top surface is higher than concentrated jar top surface, a supporting seat is directly fixed on the switch board top surface, a telescoping device is installed to another, the inside telescopic hose that is equipped with of telescoping device, the supporting seat is passed to the hose upper end and is inserted the outlet pipe, the lower extreme is connected with the suction tube in the concentrated jar, install a mud concentration on-line.

After the muddy water mixture passes through the water inlet pipe, the muddy water mixture enters the interior of the concentration tank to start gravity settling, after standing for 8-10 hours, the telescopic device starts to enable the suction pipe to extend towards the bottom of the tank body, when the sludge concentration of a supernatant fluid measured by a sludge concentration on-line instrument at the outlet end of the suction pipe is within the range of 90-100mg/L, vacuum suction is carried out, and the supernatant fluid enters the water outlet pipe and is discharged; after the supernatant is discharged, the valve is opened, and the concentrated sludge liquid is discharged for dehydration treatment.

Furthermore, a refraction plate is arranged at the water outlet end of the central shaft tube, and muddy water enters the tank body of the concentration tank from the side of the refraction plate, so that the disturbance to the precipitated sludge can be reduced.

Furthermore, the inlet end of the suction pipe is designed into a U-shaped pipe, so that condensed sludge at the bottom of the tank body can be prevented from being sucked out when supernatant is sucked upwards.

Furthermore, a vacuum suction device is installed on the water outlet pipe, and when the supernatant is discharged, the vacuum suction device discharges air in the pipeline to form pressure difference between the inside and the outside of the pipeline so as to pump out the supernatant.

Further, just installing an air-blast device on the supporting seat bottom surface of the online appearance of mud concentration, at the non-working period, the telescoping device starts to move the suction tube upward, rises out the concentrated jar when the online concentration appearance of mud and removes to air-blast device below, and air-blast device starts to carry out the air purge to the online appearance probe of mud concentration, prevents that mud adhesion from influencing the testing result.

The utility model has the advantages that:

1. the tank device is used for replacing a cement tank body to carry out sludge gravity concentration, so that the early investment can be reduced and the land area is saved.

2. The supernatant is discharged upwards by utilizing the U-shaped pipe, so that the disturbance to the sludge precipitated at the bottom of the concentrating tank body can be reduced.

3. The concentration of suspended matters in water is detected in time by using the sludge concentration online instrument, and the supernatant sludge concentration meets the requirement and can be sucked and discharged in vacuum, so that the concentration time is shortened, and the sludge fermentation is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the utility model.

In the figure: 1 concentrated jar, 2 central axis pipes, 2.1 inlet tubes, 2.2 refraction boards, 3 suction tubes, 3.1U type pipes, 4 outlet pipes, 5 telescoping devices, 6 supporting seats, 7 vacuum suction device, 8 air blast devices, 9 mud concentration on-line appearance, 10 switch boards, 11 valves.

Detailed Description

Example 1:

as shown in fig. 1, a sludge concentration device comprises a concentration tank 1, a central shaft tube 2, a water inlet tube 2.1, a suction tube 3, a water outlet tube 4, a control cabinet 10 and a valve 11, wherein the upper part of the concentration tank 1 is a cylinder, the top of the concentration tank is open, the bottom of the concentration tank is an inverted frustum, a central shaft tube 2 is arranged at the position of a central line in a tank body of the concentration tank 1, the upper end of the central shaft tube 2 penetrates out of the top surface of the concentration tank 1 and is connected with the water inlet tube 2.1, the lower end of the central shaft tube extends into the inverted frustum at the bottom of the concentration tank 1 and is spaced from the bottom end surface; a valve 11 is arranged at the outlet end of the circular truncated cone at the bottom of the concentration tank 1, a control cabinet 10 is arranged at the upper part of the outer side wall of the concentration tank 1, the top surface of the control cabinet 10 is higher than the top surface of the concentration tank 1, one end of a supporting seat 6 is fixed on the top surface of the control cabinet 10, the other end of the supporting seat is provided with a telescopic device 5, a telescopic hose is arranged in the telescopic device 5, the upper end of the hose penetrates through the supporting seat 6 to be connected into a water outlet pipe, and a vacuum suction; the lower end of the hose is connected with a suction pipe 3 in the thickening tank 1, the inlet end of the suction pipe in the thickening tank 1 is designed into a U-shaped pipe 3.1, supernatant can be sucked upwards to prevent thickened sludge at the bottom of the tank body from being sucked out, the outer side wall of the lower part of the suction pipe 3 is provided with a sludge concentration online instrument 9, and an air flushing device 8 is arranged on the bottom surface of a supporting seat 6 just facing the sludge concentration online instrument 9.

When the concentration tank works, after the sludge-water mixture passes through the water inlet pipe 2.1, the sludge-water mixture enters the concentration tank 1 to start gravity settling, after standing for 8-10 hours, the telescopic device 5 starts to enable the suction pipe 3 to extend towards the bottom of the tank body, when the supernatant sludge concentration at the outlet end of the suction pipe is measured by an on-line instrument to be within the range of 90-100mg/L, the control cabinet 10 automatically starts the vacuum suction device 7 to carry out vacuum suction, the supernatant enters the water outlet pipe 4 to be discharged, the valve 11 is opened after the supernatant is discharged, and the concentrated sludge liquid is discharged to be dehydrated; during the non-working period, the telescopic device 5 is started to move the suction pipe 3 upwards, when the online sludge concentration meter 9 rises out of the concentration tank 1, the concentration tank moves to the lower part of the air flushing device 8, the air flushing device 8 is started to perform air flushing on the probe of the online sludge concentration meter 9, and the detection result is prevented from being influenced by sludge adhesion.

Claims

1. The utility model provides a sludge concentration device, includes concentrated jar, central siphon, inlet tube, suction tube, outlet pipe, switch board, valve, and concentrated jar upper portion is the cylinder, and the top is uncovered, and the bottom is the radius frustum, and the internal central line position of jar of concentrated jar is equipped with a central siphon, and the inlet tube is connected to the top of concentrated jar is worn out to central siphon upper end, and the lower extreme leaves the interval along extending in the radius frustum of concentrated jar bottom and with the bottom end face, and the round frustum exit end of concentrated jar bottom is equipped with a valve, its characterized in that: the control cabinet is installed on outer lateral wall upper portion of the thickening jar, and the control cabinet top surface is higher than the thickening jar top surface, and a supporting seat is fixed on the control cabinet top surface directly, and a telescoping device is installed to another, and the inside telescopic hose that is equipped with of telescoping device, hose upper end pass the supporting seat and insert the outlet pipe, and the lower extreme is connected with the suction tube in the thickening jar, installs a mud concentration on-line appearance on the suction tube lower part lateral wall in the thickening jar.

2. The sludge thickening apparatus according to claim 1, wherein: the water outlet end of the central shaft tube is provided with a refraction plate.

3. The sludge thickening apparatus according to claim 1, wherein: the suction pipe inlet end is designed as a U-shaped pipe.

4. The sludge thickening apparatus according to claim 1, wherein: the water outlet pipe is provided with a vacuum suction device.

5. The sludge thickening apparatus according to claim 1, wherein: an air-blast device is arranged on the bottom surface of the supporting seat which is opposite to the sludge concentration on-line instrument.