CN111606540A

CN111606540A - High-pressure sludge dewatering treatment method

Info

Publication number: CN111606540A
Application number: CN202010513460.XA
Authority: CN
Inventors: 程秀
Original assignee: Tianjin Li Bilang Environmental Technology Co ltd
Current assignee: Tianjin Li Bilang Environmental Technology Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-09-01

Abstract

The application provides a high-pressure sludge dewatering treatment method, which comprises the following steps: circumferentially arranging each sieve tube at the edge of the operating platform; controlling a material injection cantilever arranged on a control upright post at the center of an operation platform to inject materials into a sieve tube A; driving the control upright post to rotate so that the squeezing cantilever on the control upright post is positioned above the sieve tube A; controlling a squeezing piston on a squeezing cantilever to be pressed into the sieve tube A from top to bottom along the axial direction of the sieve tube A; standing the sieve tube A for a set time; driving the control upright post to rotate, and controlling the discharging cantilever to extract the squeezing piston in the sieve tube A to the outer side of the sieve tube; and opening the bottom cover of the A sieve tube to discharge the A sieve tube. The beneficial effect of this application is: the material injection cantilever, the squeezing cantilever and the discharging cantilever are respectively arranged on the operating platform, so that the three cantilevers can perform parallel work on different sieve tubes on the operating platform, and the sludge dewatering efficiency is improved.

Description

High-pressure sludge dewatering treatment method

Technical Field

The disclosure relates to the technical field of sludge dehydration, in particular to a high-pressure sludge dehydration treatment method.

Background

A sludge treatment method is provided for removing water from fluid primary, concentrated or digested sludge and converting the sludge into semi-solid or solid sludge blocks. The prior art adopts the squeezing piston that is the same with the barrel footpath in the squeezing barrel to impress in the squeezing barrel that is equipped with mud by the one end of squeezing barrel usually when dehydrating mud for the moisture that is squeezed flows out by the other end of squeezing barrel, the principle of this dehydration method is to the mud in the squeezing barrel along the axial direction dehydration in the bucket, axial mud dehydration is not suitable for the great squeezing barrel of internal diameter, when the internal diameter of squeezing barrel is great on the one hand to the dehydration of mud insufficient, on the other hand will squeeze the required drive power of piston axial pressfitting squeezing barrel great, be difficult to satisfy the drive power that the axial was impressed, and the energy waste, it is lower to dewater slower efficiency simultaneously.

Disclosure of Invention

The application aims to solve the problems and provide a high-pressure sludge dewatering treatment method.

In a first aspect, the present application provides a method for high pressure dewatering of sludge, comprising the steps of:

respectively installing the bottom seal cover and the top seal cover of each screen pipe at two ends of the screen pipe;

circumferentially arranging each sieve tube at the edge of the operating platform;

controlling a material injection cantilever arranged on a control upright post at the center of an operation platform to inject materials into a sieve tube A;

driving the control upright post to rotate so that the squeezing cantilever on the control upright post is positioned above the sieve tube A;

controlling a squeezing piston on a squeezing cantilever to be pressed into the sieve tube A from top to bottom along the axial direction of the sieve tube A;

standing the sieve tube A for a set time;

the control upright post is driven to rotate, so that a discharge cantilever on the control upright post is connected with the top end of the squeezing piston in the sieve tube A;

controlling the discharging cantilever to extract the squeezing piston in the sieve tube A to the outer side of the sieve tube;

and opening the bottom cover of the A sieve tube to discharge the A sieve tube.

According to the technical scheme that this application embodiment provided, the control squeezes the piston that squeezes on the cantilever and from top to bottom along the axial of A screen pipe impress in the A screen pipe, still include: and the material injection cantilever simultaneously injects materials into the sieve tube B on the operating platform.

According to the technical scheme that this application embodiment provided, the control squeezes the piston that squeezes on the cantilever and from top to bottom along the axial of A screen pipe impress in the A screen pipe, still include: and the discharging cantilever simultaneously lifts the squeezing piston in the sieve tube C on the operating platform upwards.

According to the technical scheme provided by the embodiment of the application, the control setting annotates the material to A sieve intraductal notes material among them on the control stand at operation panel center, specifically include:

opening a filling port on a top sealing cover of the sieve tube A, and injecting sludge into the sieve tube A from the filling port through a high-pressure plunger pump;

and when the pressure of the sludge in the sieve tube A reaches a first set pressure, stopping injecting the sludge and closing the injection port.

According to the technical scheme that this application embodiment provided, the control squeezes the axial that squeezes the piston from top to bottom along A screen pipe on the cantilever and impresses in A screen pipe, specifically includes:

opening a squeezing opening on a top sealing cover of the sieve tube A, and pressing a squeezing piston into the sieve tube A from the squeezing opening under the driving of a squeezing cantilever along the axial direction of the sieve tube A;

and when the squeezing piston is completely pressed into the sieve tube A and the pressure of the sludge in the sieve tube A is greater than or equal to a second set pressure, the squeezing cantilever stops working and the squeezing opening is closed.

According to the technical scheme provided by the embodiment of the application, the end part of the pressing piston, which corresponds to one side of the sieve tube, is set to be of a pointed cone structure.

According to the technical scheme provided by the embodiment of the application, the inner diameter range of the screen pipe is set to be 300mm-500 mm.

According to the technical scheme provided by the embodiment of the application, the diameter range of the pressing piston is set to be 150mm-250 mm.

According to the technical scheme provided by the embodiment of the application, the standing of the screen pipe A for the set time specifically comprises the following steps: the a sieve was left to stand for 10 minutes to 10 hours.

According to the technical scheme provided by the embodiment of the application, the method for discharging the A screen pipe by opening the bottom cover of the A screen pipe specifically comprises the following steps: and opening the bottom cover of the A sieve tube, and placing the A sieve tube on a vibration table to enable the dehydrated materials to fall from the A sieve tube.

The invention has the beneficial effects that: the application provides a method for carrying out high-pressure dehydration on sludge, the two ends of each sieve tube are placed on an operation platform after being sealed by a bottom seal cover and a top seal cover, and the injection cantilever, the squeezing cantilever and the unloading cantilever are respectively carried out parallel operation on different sieve tubes on the operation platform by driving and controlling the rotation of a stand column, so that the dehydration efficiency of each sieve tube on the operation platform is improved. The sludge is injected into a certain sieve tube through the injection cantilever, then the squeezing piston is pressed into the sieve tube along the axial direction of the sieve tube, the sludge in the sieve tube is radially extruded, the sludge is not axially extruded in the sieve tube, and the diameter of the squeezing piston is not required to be set to be consistent with the inner diameter of the sieve tube, so that the driving force for driving the squeezing piston is obviously reduced compared with the axial squeezing dehydration of the sludge. When the screen pipe is completely pressed in by squeezing and the sludge in the screen pipe reaches a certain pressure, the screen pipe is kept stand for a certain time, so that the water in the sludge is discharged out of the screen pipe through the screen holes on the side wall of the screen pipe, and finally the dewatered sludge is discharged out of the screen pipe.

Drawings

FIG. 1 is a flow chart of a first embodiment of the present application;

FIG. 2 is a schematic top view of a first embodiment of the present application;

FIG. 3 is a schematic view of the press piston pressing into the screen according to the first embodiment of the present application;

FIG. 4 is a schematic view of a first embodiment of the present application showing the press piston fully pressed into the screen;

FIG. 5 is a schematic view of the structure of the bottom cover in the first embodiment of the present application;

the text labels in the figures are represented as: 100. a screen pipe; 200. a squeeze piston; 310. controlling the upright post; 320. injecting a material cantilever; 330. a pressing cantilever; 340. a discharge cantilever; 400. a bottom sealing cover; 500. a top sealing cover; 510. a squeezing opening; 520. a material injection port; 530. a blocking cover; 600. an operation platform.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 5, the present embodiment includes the following steps:

s1, the bottom and

top covers

400 and 500 of each screen 100 are installed at both ends thereof, respectively.

In this embodiment, the top cover 500 is respectively provided with the squeezing opening 510 and the injecting opening 520, and the detachable blocking cover 530 is respectively arranged corresponding to the squeezing opening 510 and the injecting opening 520, so that the bottom cover 400 is arranged as a gate valve structure for facilitating the unloading of sludge.

The sieve tube 100 in this embodiment is a trapezoidal wire-wrapped sieve tube 100, and the sieve tube 100 in this embodiment is a product that can be purchased in the prior art, and has a cylindrical structure, and sieve holes communicated with the inner cavity are uniformly arranged on the side wall.

S2, arranging each screen 100 circumferentially at the edge of the station 600.

And S3, controlling the injection cantilever 320 arranged on the control upright 310 at the center of the operation table 600 to inject materials into the A screen 100.

In this embodiment, since the operation table 600 is provided with a plurality of screens 100, in this embodiment, the sludge dewatering of any one of the screens 100 is taken as an example, and for convenience of description, the a screen 100 is named as any one of the screens 100, so the a screen 100 does not have a special meaning in this embodiment, and only represents any one of the screens 100.

The method specifically comprises the following steps:

and S31, opening the injection port 520 on the top sealing cover 500 of the A sieve tube 100, and injecting the sludge into the A sieve tube 100 from the injection port 520 through the high-pressure plunger pump.

In this step, the blocking cover 530 on the injection port 520 is opened, sludge is injected into the sieve tube 100 through the injection port 520, the water content in the sludge before dehydration is high, the water content in general municipal sludge is about 85%, and the water content in oily sludge is about 70%.

S32, stopping the sludge injection when the pressure of the sludge in the a-sieve tube 100 reaches the first set pressure, and closing the injection port 520.

In this step, when the pressure of the sludge in the sieve tube 100 reaches 1MPa, the sludge injection is stopped, and the stopper 530 of the injection port 520 is closed. After the injection port 520 is closed by the blocking cover 530, the sludge is prevented from overflowing from the injection port 520 in the sludge pressing process, and the normal dehydration process is prevented from being influenced.

S4, control column 310 is driven to rotate so that press boom 330 on control column 310 is above a screen 100.

S5, press piston 200 on press cantilever 330 is controlled to press into a-screen 100 from top to bottom along the axial direction of a-screen 100.

In this embodiment, the operating table 600 is provided with a fixing frame for the pressing piston 200 beside each sieve tube 100, and the pressing cantilever 330 is taken out from the fixing frame and then vertically pressed into the corresponding sieve tube 100 when operating each time. In other embodiments, all of the press pistons 200 may be placed in a centralized area in the center of the station 600, and the press boom 330 is operated to remove one press piston 200 from the centralized area and then moved over the corresponding screen 100 to screen the press piston 200 into the screen 100.

In this step, the end of the pressing piston 200 corresponding to the sieve conduit 100 is preferably set to a pointed cone structure. One end of the pressing piston 200 is set to be a pointed cone structure, so that the resistance of the pressing piston 200 in axial movement along the sieve tube 100 can be effectively reduced, the driving force of the pressing cantilever 330 is reduced, the energy is saved, and the operation is convenient.

In this step, the injection cantilever 320 preferably injects material into the B-screen 100 on the operation table 600 at the same time.

In this step, the press piston 200 in the C-screen 100 on the station 600 is preferably simultaneously lifted upwards on the discharge boom 340.

In this step, when the pressing piston 200 is completely pressed into the a-sieve conduit 100 and the pressure of the sludge in the a-sieve conduit 100 is greater than or equal to the second set pressure, the pressing cantilever 330 stops driving and closes the pressing opening 510.

Preferably, when the pressing piston 200 is completely pressed into the a-sieve conduit 100 and the pressure of the sludge in the a-sieve conduit 100 is greater than or equal to 20MPa, the pressing cantilever 330 stops driving and closes the blocking cover 530 on the pressing port 510. The pressing opening 510 is closed by the blocking cover 530, so that the pressing piston 200 is prevented from popping out of the A sieve tube 100 under the action of the pressing reaction of the sludge in the process that the pressing piston 200 radially presses the sludge, and the sealing performance of the A sieve tube 100 in the high-pressure dehydration process is ensured

In this step, while the pressing cantilever 330 presses the pressing piston 200 into the a sieve tube 100, the injection cantilever 320 and the discharge cantilever 340 simultaneously perform related operations on other corresponding sieve tubes 100 on the operation table 600, so that the cantilevers responsible for different functions in sludge dewatering are in working states, and the dewatering work on the operation table 600 is in a parallel processing process, thereby increasing the working efficiency of sludge dewatering.

In this embodiment, the inner diameter of the sieve tube 100 is preferably set to 300mm, and in other preferred embodiments, the inner diameter of the sieve tube 100 can be set to 350mm, 450mm and 500mm or any value in the range of 300mm-500 mm.

The diameter of the pressing piston 200 is preferably set to 150mm, and the diameter of the pressing piston 200 may be set to any value in the range of 180mm, 200mm and 250mm or 150mm to 250mm in other preferred embodiments. In the preferred embodiment, the diameter of the squeezing piston 200 is set to be half of the inner diameter of the sieve tube 100, and compared with the technical scheme that the diameter of the squeezing rod is different from the inner diameter of the squeezing bucket when sludge in the squeezing bucket is axially squeezed in the prior art, the diameter of the squeezing piston 200 is set to be half of the inner diameter of the sieve tube 100, so that the driving force of the squeezing cantilever 330 on the squeezing piston 200 can be effectively reduced, the squeezing cantilever 330 can easily press the squeezing piston 200 into the sieve tube 100 along the axial direction of the sieve tube 100, the operation is convenient, energy is saved, and the working efficiency is improved.

S6, the A screen pipe 100 is placed for a set time.

The a sieve tube 100 is left for 3 hours in this step, and the time for which the sieve tube 100 is left to stand may be set to 10 minutes, 30 minutes, 1 hour, 5 hours, 8 hours, 10 hours or any value within a range of 10 minutes to 10 hours in other embodiments.

S7, control column 310 is driven to rotate, so that discharge boom 340 on control column 310 is connected to the top end of pressing piston 200 in a screen 100.

S8, control the discharge boom 340 to extract the press piston 200 inside the a screen 100 to the outside of the screen 100.

In this step, the discharging cantilever 340 takes out the pressing piston 200 in the a sieve tube 100 and then places the pressing piston 200 back to the corresponding fixed frame or the centralized area in the center of the operation table 600, so that the pressing cantilever 330 can conveniently grab the pressing piston 200 for reuse.

S9, the a-screen 100 is discharged by opening the bottom closure 400 of the a-screen 100.

The method specifically comprises the following steps: the bottom cover 400 of the a-screen 100 is opened and the a-screen 100 is placed on a shaker table so that the dehydrated material falls out of the a-screen 100.

The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.

Claims

1. The high-pressure sludge dewatering treatment method is characterized by comprising the following steps:

standing the sieve tube A for a set time;

and opening the bottom cover of the A sieve tube to discharge the A sieve tube.

2. The method for high-pressure sludge dewatering according to claim 1, wherein the pressing piston on the pressing cantilever is controlled to be pressed into the sieve tube A from top to bottom along the axial direction of the sieve tube A, and the method further comprises the following steps: and the material injection cantilever simultaneously injects materials into the sieve tube B on the operating platform.

3. The method for sludge high-pressure dehydration treatment according to claim 1 or 2, wherein said pressing piston on said control pressing cantilever is pressed into the A sieve tube from top to bottom along the axial direction of the A sieve tube, further comprising: and the discharging cantilever simultaneously lifts the squeezing piston in the sieve tube C on the operating platform upwards.

4. The sludge high-pressure dehydration treatment method according to claim 1, characterized in that said controlling the injection cantilever arranged on the control upright at the center of the operation table to inject materials into the sieve tube A therein specifically comprises:

5. The sludge high-pressure dehydration treatment method according to claim 1, wherein the pressing piston on the pressing cantilever is controlled to be pressed into the sieve tube A from top to bottom along the axial direction of the sieve tube A, and the method specifically comprises the following steps:

6. The sludge high-pressure dewatering treatment method according to claim 1, wherein the end of the pressing piston on the side corresponding to the sieve tube is provided with a pointed cone structure.

7. The sludge high-pressure dewatering treatment method according to claim 1, wherein the inner diameter of the screen is set to a range of 300mm to 500 mm.

8. The sludge high-pressure dewatering treatment method according to claim 7, wherein the pressing piston is set to have a diameter in the range of 150mm to 250 mm.

9. The sludge high-pressure dehydration treatment method according to claim 1, wherein said leaving the a sieve tube for a set time specifically comprises: the a sieve was left to stand for 10 minutes to 10 hours.

10. The sludge high-pressure dehydration treatment method according to claim 1, wherein the opening of the bottom cover of the A sieve tube discharges the A sieve tube, specifically comprising: and opening the bottom cover of the A sieve tube, and placing the A sieve tube on a vibration table to enable the dehydrated materials to fall from the A sieve tube.