CN-121990744-A - Treatment device for separating sludge microplastic

CN121990744ACN 121990744 ACN121990744 ACN 121990744ACN-121990744-A

Abstract

The invention discloses a treatment device for separating sludge microplastic, belonging to the technical field of green environmental protection. The venturi jet mixer mainly comprises a shell, a mandrel and a surrounding baffle group, wherein the mandrel is coaxially arranged in an inner cavity of the shell and is in running fit with the shell, the surrounding baffle group comprises a first spiral sheet, a second spiral sheet, a first throat sheet and a second throat sheet, a tapered flow passage is arranged between the first spiral sheet and the second spiral sheet, a throat flow passage is arranged between the first throat sheet and the second throat sheet, the throat flow passage is connected at the outflow end of the tapered flow passage, the flow section of the tapered flow passage is tapered in the direction of pointing to the throat flow passage by the tapered flow passage, the flow section of the throat flow passage is smaller than or equal to the minimum flow section of the tapered flow passage, the first spiral sheet and the first throat sheet are connected with the mandrel, and the second spiral sheet and the second throat sheet are connected with the shell. The treatment device for separating the sludge microplastic can effectively solve the problem that blockage is easy to occur when jet mixing is carried out on the sludge.

Inventors

GE DONGDONG
ZHANG YUHE
WANG HUI
LIANG JIALIN
LIU LI
YU YALIN
HUANG SHOUQIANG

Assignees

江苏理工学院

Dates

Publication Date: 20260508
Application Date: 20260326

Claims (10)

1. A treatment device for separating sludge microplastic is characterized by comprising a Venturi jet mixer, wherein the Venturi jet mixer comprises a shell, a mandrel and a surrounding baffle group, the mandrel is coaxially arranged in an inner cavity of the shell, the mandrel is in rotary fit on the shell around the axial line of the mandrel, the surrounding baffle group comprises a first spiral sheet, a second spiral sheet, a first throat sheet and a second throat sheet, the first spiral sheet and the second spiral sheet are oppositely and alternately arranged along the axial direction of the shell/mandrel, a tapered flow channel is arranged between the first throat sheet and the second throat sheet and oppositely and alternately arranged along the axial direction of the shell/mandrel, a throat flow channel is arranged between the first throat sheet and the second throat sheet, the throat flow channel is connected to the outflow end of the tapered flow channel, the flow section of the tapered flow channel is gradually reduced along the direction of the throat flow channel, the flow section of the throat flow channel is smaller than or equal to the minimum flow section of the tapered flow channel, an air inlet for connecting ozone is arranged on the side wall of the throat, the first throat sheet and the mandrel are fixedly connected with the mandrel, the throat sheet and the second throat sheet can alternately rotate along the first throat sheet and the second throat sheet and the shell.
2. The device for separating sludge microplastic according to claim 1, wherein the housing has a circular tube structure with two open ends, one end of the housing is provided with an inlet for receiving sludge fluid, the other end of the housing is provided with an outlet for outputting the mixed fluid of sludge and ozone, the inner cavity of the housing is divided into an inflow region near the inlet and a mixed flow region near the outlet by a surrounding baffle plate, and the tapered flow passage and the throat flow passage are communicated between the inflow region and the mixed flow region.
3. The device for separating sludge microplastic according to claim 1, wherein the first spiral sheet is formed by spirally extending a strip extending along the radial direction of the shell around the axial line of the shell, the second spiral sheet is also formed by spirally extending a strip extending along the radial direction of the shell around the axial line of the shell, the pitch of the path of the second spiral sheet is larger than that of the first spiral sheet, one side of the first spiral sheet close to the mandrel is jointed and fixedly connected with the outer circumferential wall of the mandrel, one side of the first spiral sheet close to the shell is jointed and fixedly connected with the inner circumferential wall of the shell in a sealing manner, one side of the second spiral sheet close to the mandrel is jointed and fixedly connected with the inner circumferential wall of the shell in a sealing manner, the inner circumferential wall of the shell is jointed with the outer circumferential wall of the mandrel, the first spiral sheet and the second spiral sheet form the tapered flow passage, and the path of the tapered flow passage is spirally extended around the axial line of the shell.
4. The device for separating sludge microplastic according to claim 1, wherein the first throat plate is connected to one end of the first spiral plate close to the outlet, one side of the first throat plate close to the mandrel is jointed and fixedly connected with the outer peripheral wall of the mandrel, one side of the first throat plate close to the housing is jointed with the inner peripheral wall of the housing in a sealing manner, the second throat plate is connected to one end of the second spiral plate close to the outlet, one side of the second throat plate close to the mandrel is jointed and fixedly connected with the inner peripheral wall of the housing in a sealing manner, the first throat plate is parallel to the second throat plate, the inner peripheral wall of the housing is jointed with the outer peripheral wall of the mandrel, the first throat plate and the second throat plate in a surrounding manner to form the throat flow passage, and the path of the throat flow passage extends along the circumferential direction of the housing.
5. The device for separating sludge microplastic according to claim 3, wherein the first spiral sheet is located on one side of the second spiral sheet, which is close to the inlet, a warping surface is arranged on one side of the first spiral sheet, which is close to the inlet, a trend of gradually approaching to the outlet is formed along the warping surface of the flow direction of the tapered flow channel, the venturi jet mixer is provided with at least two surrounding baffle groups, the surrounding baffle groups are distributed in a circumferential array along the circumferential direction of the shell, one end, which is far away from the second spiral sheet, of the second spiral sheet is connected with extension sheets, the lower end surface of the extension sheet of the surrounding baffle group is abutted against the upper end surface of the first throat sheet of the adjacent surrounding baffle group, the first throat sheet is perpendicular to the shaft of the mandrel, the surrounding baffle groups further comprise an electric control component, the electric control component comprises a sliding block, a sensor and a rotary driver, the sliding block is fixedly connected with the first throat sheet of the adjacent surrounding baffle groups, the sensor is arranged on the extension sheet, the rotary driver is used for driving the sliding block to rotate along the second rotary direction of the mandrel, the electric signal is driven to rotate along the first rotary direction of the mandrel, the first rotary driver is driven to trigger the first rotary direction of the sliding block to rotate along the first rotary direction, and the first rotary driver is driven to rotate along the first rotary direction, and the rotary direction is simultaneously, and the rotary driver is driven to rotate along the first rotary direction to the rotary direction and the rotary direction is set to reach the rotary direction.
6. The device for separating sludge microplastic according to claim 5, wherein the sliding block is of a circular arc-shaped strip structure, the circle center of the sliding block coincides with the axis of the mandrel, a gear is arranged at the output end of the rotary driver, an arc-shaped rack is arranged at one side of the sliding block, which is close to the rotary driver, and the gear of the rotary driver is meshed with the rack on the sliding block.
7. The apparatus of claim 5, wherein the electrical control assembly further comprises a circuit board mounted on the extension piece, and the sensor and the rotary driver are electrically connected to the circuit board.
8. The device for separating sludge microplastic according to claim 5, wherein the extension piece is hollow in the interior to form an installation chamber isolated from the inner cavity of the housing, the circuit board, the sensor and the rotary driver are accommodated in the installation chamber, sliding holes are formed in the side walls of the installation chamber corresponding to the sliding blocks, the sliding blocks penetrate through the sliding holes, and the part of the sliding blocks penetrating through the sliding holes and extending out of the installation chamber is fixedly connected with the throat piece.
9. The device for separating sludge microplastic from sludge, as claimed in claim 8, wherein the slider is located at a side close to the housing and close to the installation chamber, an arc sidewall is arranged at a side close to the housing and close to the installation chamber, a center of the arc sidewall coincides with an axis of the mandrel, a stabilizing leg is convexly arranged on the slider and close to the arc sidewall, the stabilizing leg is in sliding contact with the arc sidewall, and a gear on the rotary driver is located at a side of the slider away from the arc sidewall.
10. The apparatus for separating sludge microplastic from sludge, as claimed in claim 5, wherein the side of the extension piece close to the housing is attached to and fixedly connected with the inner peripheral wall of the housing, and the side of the extension piece close to the mandrel is attached to the outer peripheral wall of the mandrel in a sealing manner.

Description

Treatment device for separating sludge microplastic Technical Field The invention relates to the technical field of green and environment protection, in particular to a treatment device for separating sludge microplastic. Background Ozone (O)) The treatment is a green and environment-friendly sludge treatment process, which can separate microplastic in sludge, and has the core of utilizing the strong oxidizing property of ozone to selectively decompose and mineralize organic matters (extracellular polymer, polysaccharide, protein, humic acid and the like) in the sludge, and when the 'organic shell' wrapping and adhering the microplastic is oxidized and degraded, the microplastic can be separated due to the density difference or the change of surface hydrophobicity, thereby realizing high-efficiency separation. In order to improve the dissolution efficiency and the contact area of ozone in thick sludge, a jet mixer is generally adopted to mix the ozone with the sludge at a high speed to generate strong shearing force to break sludge flocs, but the jet mixer is generally easy to generate blocking phenomenon when in use due to the necessary design of a tapered flow channel, particularly to convey the sludge with high solid content, because the sludge has poor viscosity, insufficient negative pressure and forms bridging blocking, and the sludge contains large particle impurities and accumulates at a jet to cause blocking, or the sludge is not washed after shutdown and the residual sludge is hardened. Therefore, it is necessary to provide a novel treatment device for separating sludge microplastic. Disclosure of Invention Based on the above problems in the prior art, an object of an embodiment of the present invention is to provide a treatment device for separating sludge microplastic, which can effectively solve the problem that in the prior art, clogging is easy to occur when jet mixing is performed on sludge. The invention provides a treatment device for separating sludge microplastic, which comprises a Venturi jet mixer, wherein the Venturi jet mixer comprises a shell, a mandrel and a surrounding baffle group, the mandrel is coaxially arranged in an inner cavity of the shell, the mandrel is rotatably matched with the shell around the axis of the mandrel, the surrounding baffle group comprises a first spiral sheet, a second spiral sheet, a first throat sheet and a second throat sheet, the first spiral sheet and the second throat sheet are oppositely and alternately arranged along the axial direction of the shell/mandrel, tapered flow passages are arranged between the first throat sheet and the second throat sheet and oppositely and alternately arranged along the axial direction of the shell/mandrel, a throat flow passage is arranged between the first throat sheet and the second throat sheet, the throat flow passage is connected to the outflow end of the tapered flow passage, the flow section of the tapered flow passage is gradually reduced from the direction of the tapered flow passage to the throat flow passage, the flow section of the throat flow passage is smaller than or equal to the minimum flow section of the tapered flow passage, an air inlet connected with ozone is arranged on the side wall of the throat flow passage, the first spiral sheet and the second throat sheet can be alternately connected with the first throat sheet and the second throat sheet along the rotation direction, and the first throat sheet and the second throat sheet can be alternately rotated along the rotation direction of the fixed direction of the shell. Further, the shell is the tubular structure of both ends open-ended, the one end of shell is equipped with the entry that is used for inserting mud fluid, the other end of shell is equipped with the export that is used for exporting mud and ozone mixed back fluid, the inner chamber of shell is divided into the inflow district that forms near the entry and is close to the mixed flow district of export by enclosing the separation blade group, convergent runner and throat runner intercommunication are in between inflow district and the mixed flow district. Further, the first spiral sheet is formed by spirally extending a strip extending along the radial direction of the shell around the axial lead of the shell, the second spiral sheet is formed by spirally extending a strip extending along the radial direction of the shell around the axial lead of the shell, the pitch of the path of the second spiral sheet is larger than that of the path of the first spiral sheet, one side of the first spiral sheet, which is close to the mandrel, is attached to and fixedly connected with the outer peripheral wall of the mandrel, one side of the first spiral sheet, which is close to the shell, is in sealing attachment with the inner peripheral wall of the shell, one side of the second spiral sheet, which is close to the mandrel, is attached to and fixedly connected with the inner peripheral wall of t