Pipeline dosing and mixing device and method for mixing dredging bottom mud and dehydration auxiliary agent
By setting the tooth ridge and lateral inflow mechanism in the pipeline, the problem of insufficient mixing of silt bottom silt and dehydration additives is solved, efficient sludge separation and sludge curing are achieved, and the moisture content and transportation of sludge after curing is reduced. cost.
Patent Information
- Application Number
- CN202411361174.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-27
AI Technical Summary
In the prior art, the silt bottom sludge and dehydration additives are not mixed sufficiently in the pipeline, resulting in poor sludge separation effect and affecting the sludge curing effect.
A pipeline dosing mixing device is designed, including a mud inlet connection pipe section, a mixing pipe section and a mud outlet connection pipe section. The inner wall of the mixing pipe is equipped with a tooth ridge, which can silt bottom silt and dehydrate through lateral inflow and picking flow. Fully mix of additives.
The full mixing of the silt bottom silt and the dehydration additive and the full separation of sludge water is achieved, the curing effect of silt is improved, the moisture content of silt after curing is reduced, and the cost of transporting the solidified soil is reduced.
Smart Images
Figure CN119186300A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of river and lake ecological dredging construction, and specifically relates to a pipeline dosing mixing device and a mixing method for dredging sludge and a dewatering aid. Background Art
[0002] In recent years, with the continuous advancement of the comprehensive management of urban water environment, various provinces and cities in China have successively carried out large-scale ecological dredging of rivers and lakes. Ecological dredging mainly removes floating mud and flowing mud with high eutrophication on the surface. Since the surface sludge has a high water content and high content of nutrients and organic matter, the construction mainly adopts environmentally friendly suction dredger excavation and pipeline transportation technology. The direct discharge of mud and water mixture has a certain impact on the surrounding environment, and it is often necessary to set up a special mud discharge yard for fixed-point discharge. Therefore, the disposal and utilization of dredged sludge on shore is a major issue facing the ecological dredging projects of rivers and lakes.
[0003] In the past, most ecological dredging projects set up sludge dumps along rivers and lakes to pile up sludge, and then reclaim the land after the sludge dried naturally. With the further implementation of large-scale ecological dredging projects and the development and utilization of urban land resources, the resources of sludge dumps along the lakes are becoming increasingly exhausted, and it is difficult to find large-scale sludge dumps for natural drying. Therefore, bringing the dredged sludge ashore, solidifying and dehydrating it, and then disposing of it for utilization is a new way to dispose of dredged sludge.
[0004] According to the practical experience of domestic ecological dredging sludge solidification engineering, the main solidification processes currently include vacuum preloading, geotube bags, mechanical filter presses, etc. Among them, the geotube bags, mechanical filter presses and other processes all use dehydration aids in the pipeline after the sludge is brought ashore to achieve mud-water separation, and then discharge it into the geotube bag or mechanical filter press system for sludge solidification treatment. The solidified sludge is comprehensively utilized. Therefore, the full mixing of the dehydration aid and the dredging sludge is the key to achieving mud-water separation and the key to achieving the sludge solidification effect. The existing construction process mostly uses the direct addition of dehydration aids through the dosing port in the sludge pipeline, and the flow path of the sludge during the pipeline transportation process is used to achieve the mixing of the dehydration aid and the sludge. However, the dehydration aid and the sludge particles are not fully mixed during the transportation process, so the mud-water separation effect is poor, which affects the sludge solidification effect.
[0005] Based on the above technical defects, there is an urgent need for a device that can achieve sufficient mixing of the dewatering aid and the dredged sludge in the pipeline, thereby achieving efficient and sufficient mud and water separation. Summary of the invention
[0006] In view of the above-mentioned defects of the prior art, the present invention provides a pipeline dosing mixing device and a mixing method of dredged sludge and a dewatering aid, which can achieve sufficient mixing of the dredged sludge and the dewatering aid in the mixing pipeline and achieve sufficient separation of mud and water in the dredged sludge.
[0007] The technical solution adopted by the present invention to solve its technical problem is:
[0008] A pipeline dosing and mixing device comprises a mud inlet connecting pipe section, one end of the mud inlet connecting pipe section is used to be connected to a mud conveying pipeline of a dredging ship, and the other end is connected to one end of a mixing pipeline at a vertical tangent, the mud inlet connecting pipe section is also connected to one end of a dosing port connecting pipe section, the other end of the dosing port connecting pipe section is used to be connected to a dewatering agent conveying pipeline, the other end of the mixing pipeline is connected to one end of a mud outlet connecting pipe section, the other end of the mud outlet connecting pipe section is used to be connected to a mud outlet pipeline, the inner diameter of the mixing pipeline is larger than the inner diameter of the mud inlet connecting pipe section, and a plurality of teeth are provided around the inner wall of the mixing pipeline, the mixing pipeline is used to evenly mix the dredged sludge discharged through the mud inlet connecting pipe section with the dewatering agent, and to achieve mud and water separation of the dredged sludge.
[0009] Furthermore, the mud inlet connecting pipe section is arranged vertically, the mixing pipe is arranged horizontally in the left and right directions and the left and right ends are closed, the upper end of the mud inlet connecting pipe section is used to connect to the mud delivery pipe of the dredging ship and the lower end is vertically tangently connected to the bottom of the left end side wall of the mixing pipe.
[0010] Furthermore, the dosing port connecting pipe section is parallel to the mixing pipeline, and the dosing port connecting pipe section is connected to the middle position of the mud inlet connecting pipe section.
[0011] Furthermore, the mud outlet connecting pipe section is arranged vertically, the upper end of the mud outlet connecting pipe section is vertically tangently connected to the bottom of the right end side wall of the mixing pipe, and the lower end is used to be connected to the mud outlet pipe; or the mud outlet connecting pipe section is arranged horizontally along the front-to-back direction, the rear end of the mud outlet connecting pipe section is vertically tangently connected to the bottom of the right end side wall of the mixing pipe, and the front end is used to be connected to the mud outlet pipe.
[0012] Furthermore, a transparent observation tube is connected to the mud outlet connecting pipe section at one end close to the mud outlet pipe, a valve is provided on the transparent observation tube, and the axis of the transparent observation tube is perpendicular to the axis of the mud outlet connecting pipe section and the mixing pipe.
[0013] Furthermore, the plurality of tooth ridges are divided into a plurality of tooth ridge groups along the extension direction of the mixing pipe, the spacing between adjacent tooth ridge groups along the extension direction of the mixing pipe is equal, the number of tooth ridges in each tooth ridge group is equal, and the plurality of tooth ridges in each tooth ridge group are evenly distributed around the inner wall at the corresponding position of the mixing pipe.
[0014] Furthermore, one end of the mud inlet connecting pipe section is used to connect to the mud delivery pipeline of the dredging ship through a first flange, the other end of the dosing port connecting pipe section is used to connect to the dehydration aid delivery pipeline through a second flange, and the other end of the mud outlet connecting pipe section is used to connect to the mud outlet pipeline through a third flange.
[0015] Furthermore, the inner diameter of the drug adding port connecting pipe section is smaller than the inner diameter of the mud inlet connecting pipe section, and the inner diameter of the mud outlet connecting pipe section is smaller than the inner diameter of the mixing pipe.
[0016] A method for mixing dredged sludge and a dewatering aid in a pipeline, using the above-mentioned pipeline dosing and mixing device for mixing, comprises the following steps:
[0017] S1, the desilted sludge is transported to the mud inlet connecting pipe section through the mud conveying pipeline of the dredging ship, and the dehydration aid is transported to the mud inlet connecting pipe section through the dehydration aid conveying pipeline and the dosing port connecting pipe section in sequence;
[0018] S2, the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section and then enter the mixing pipe by lateral inflow, and the dredged sludge and the dewatering aid are fully mixed by the rotating water flow generated by the lateral inflow in the mixing pipe. At the same time, the dredged sludge and the dewatering aid are fully collided and fully mixed by the flow-selecting effect of each tooth ridge, and the mud and water in the dredged sludge are fully separated;
[0019] S3. After the mud and water are fully separated in the mixing pipeline, the mud enters the mud outlet connecting pipe section and is transported to the downstream solidification equipment through the mud outlet pipeline for solidification treatment of the sludge.
[0020] Further,
[0021] Before step S1, the method further includes the following steps: connecting one end of the mud inlet connecting pipe section to the mud delivery pipeline of the dredging vessel, connecting the other end of the dosing port connecting pipe section to the dewatering agent delivery pipeline, and connecting the other end of the mud outlet connecting pipe section to the mud outlet pipeline;
[0022] Step S1 specifically includes: starting a dredging ship and performing dredging operations, wherein the dredged sludge is transported to the mud inlet connecting pipe section through the dredging ship's mud delivery pipeline, and simultaneously starting a dosing device connected to the dehydration aid delivery pipeline, wherein the dehydration aid output by the dosing device is transported to the mud inlet connecting pipe section through the dehydration aid delivery pipeline and the dosing port connecting pipe section in turn.
[0023] Compared with the prior art, the beneficial effects of the present invention are:
[0024] The pipeline dosing and mixing device of the present invention comprises a mud inlet connecting pipe section, one end of which is used to be connected to the mud conveying pipeline of a dredging ship, and the other end is connected to one end of a mixing pipeline in a perpendicular and tangential manner. The mud inlet connecting pipe section is also connected to one end of a dosing port connecting pipe section, and the other end of the dosing port connecting pipe section is used to be connected to a dehydration aid conveying pipeline. The other end of the mixing pipeline is connected to one end of a mud outlet connecting pipe section, and the other end of the mud outlet connecting pipe section is used to be connected to a mud outlet pipeline. The inner diameter of the mixing pipeline is larger than the inner diameter of the mud inlet connecting pipe section, and a plurality of tooth ridges are arranged around the inner wall of the mixing pipeline. When the pipeline dosing and mixing device is used to mix dredged sludge and a dehydration aid in a pipeline, the steps include: S1, the dredged sludge is transported to the mud inlet connecting pipe section through the mud conveying pipeline of the dredging ship, In the connecting pipe section, the dewatering aid is transported to the mud inlet connecting pipe section through the dewatering aid transport pipeline and the dosing port connecting pipe section in turn; S2, the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section and then enter the mixing pipe through the lateral inlet flow. The rotating water flow generated by the lateral inlet flow in the mixing pipe realizes the secondary full mixing of the dredged sludge and the dewatering aid. At the same time, the flow picking effect of each tooth ridge is used to realize the full collision of the dredged sludge and the dewatering aid, and the full mixing of the dredged sludge and the dewatering aid, and the full separation of mud and water in the dredged sludge; S3, the mud after the mud and water separation is fully realized in the mixing pipe enters the mud outlet connecting pipe section, and is transported to the downstream solidification equipment through the mud outlet pipe for the sludge solidification treatment. Since the other end of the mud inlet connecting pipe section is vertically tangentially connected to one end of the mixing pipe, the inner diameter of the mixing pipe is larger than the inner diameter of the mud inlet connecting pipe section, so that the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section with a smaller inner diameter, i.e., a smaller internal space, and then enter the mixing pipe with a larger inner diameter, i.e., a larger internal space, in the form of lateral inflow, and the dredged sludge and the dewatering aid are fully mixed for the second time in the mixing pipe through the rotating water flow generated by the lateral inflow. The tooth ridges can stir the flow to achieve sufficient collision between the dredged sludge and the dewatering agent, and then achieve sufficient mixing of the dredged sludge and the dewatering agent, thereby achieving sufficient separation of mud and water in the dredged sludge. Therefore, through the pipeline dosing and mixing device, the dredged sludge in the mud inlet connecting pipe section can be fully mixed with the dewatering agent in the mixing pipe before entering the solidification equipment, and achieve efficient and sufficient separation of mud and water in the dredged sludge, so as to improve the solidification effect of the sludge, reduce the water content of the sludge after solidification, and thus reduce the cost of transporting the solidified soil. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of the pipeline dosing and mixing device in the present invention;
[0026] Figure 2 for Figure 1 AA direction cross-sectional structure schematic diagram;
[0027] Figure 3 for Figure 1 BB direction cross-sectional structure schematic diagram;
[0028] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure in the CC direction;
[0029] Figure 5 for Figure 1 DD direction cross-sectional structure schematic diagram;
[0030] Figure 6 for Figure 1 EE direction cross-sectional structure schematic diagram;
[0031] Figure 7 for Figure 1 Schematic diagram of the sectional structure in the FF direction.
[0032] Explanation of the reference numerals in the figure: 101, mud inlet connecting pipe section, 102, first flange, 1021, first flange hole, 201, mixing pipe, 202, toothed ridge, 301, dosing port connecting pipe section, 302, second flange, 3021, second flange hole, 401, mud outlet connecting pipe section, 402, third flange, 4021, third flange hole, 501, transparent observation tube, 502, valve. DETAILED DESCRIPTION
[0033] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.
[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.
[0037] like Figure 1-Figure 4 As shown, a pipeline dosing and mixing device comprises a mud inlet connecting pipe section 101, one end of which is used to be connected to the mud delivery pipeline of a dredging ship, and the other end is connected to one end of a mixing pipe 201 at a vertical tangent, the mud inlet connecting pipe section 101 is also connected to one end of a dosing port connecting pipe section 301, the other end of the dosing port connecting pipe section 301 is used to be connected to a dehydration aid delivery pipeline, the other end of the mixing pipe 201 is connected to one end of a mud outlet connecting pipe section 401, the other end of the mud outlet connecting pipe section 401 is used to be connected to a mud outlet pipeline, the mud outlet pipeline is used to be connected to a downstream solidification device, the inner diameter of the mixing pipe 201 is larger than the inner diameter of the mud inlet connecting pipe section 101, and a plurality of tooth ridges 202 are provided around the inner wall of the mixing pipe 201, the mixing pipe 201 is used to evenly mix the dredging sludge discharged through the mud inlet connecting pipe section 101 with the dehydration aid, and to separate the dredging sludge from water.
[0038] When the pipeline dosing and mixing device is used to mix the dredged sludge and the dehydrating agent in the pipeline, the following steps are included: S1, the dredged sludge is transported to the sludge inlet connecting pipe section 101 through the dredging ship sludge delivery pipeline, and the dehydrating agent is transported to the sludge inlet connecting pipe section 101 through the dehydrating agent delivery pipeline and the dosing port connecting pipe section 301 in sequence; S2, the dredged sludge and the dehydrating agent are preliminarily mixed in the sludge inlet connecting pipe section 101, and then enter the mixing pipe 201 through the lateral inflow mode, and in the mixing pipe The rotating water flow generated by the lateral inflow in the channel 201 realizes the secondary full mixing of the dredged sludge and the dewatering aid, and at the same time, the flow-selecting effect of each tooth ridge 202 is used to realize the full collision of the dredged sludge and the dewatering aid, and the full mixing of the dredged sludge and the dewatering aid, and the full separation of mud and water in the dredged sludge; S3, the mud after the mud and water separation is fully realized in the mixing pipeline 201 enters the mud outlet connecting pipe section 401, and is transported to the downstream solidification equipment through the mud outlet pipeline for the sludge solidification treatment. Since the other end of the mud inlet connecting pipe section 101 is vertically tangentially connected to one end of the mixing pipe 201, the inner diameter of the mixing pipe 201 is larger than the inner diameter of the mud inlet connecting pipe section 101, so that the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section 101 with a smaller inner diameter, that is, a smaller internal space, and then enter the mixing pipe 201 with a larger inner diameter, that is, a larger internal space in the form of lateral inflow, and the dredged sludge and the dewatering aid are fully mixed for the second time in the mixing pipe 201 by the rotating water flow generated by the lateral inflow. The tooth ridges 202 on the inner wall of the channel 201 have a flow-selecting effect to achieve sufficient collision between the dredged sludge and the dewatering agent, and then achieve sufficient mixing of the dredged sludge and the dewatering agent, thereby achieving sufficient separation of mud and water in the dredged sludge. Therefore, through the pipeline dosing and mixing device, the dredged sludge in the mud inlet connecting pipe section 101 can be fully mixed with the dewatering agent in the mixing pipe 201 before entering the solidification equipment, and achieve efficient and sufficient separation of mud and water in the dredged sludge, so as to improve the solidification effect of the sludge, reduce the water content of the sludge after solidification, and thus reduce the cost of transporting the solidified soil.
[0039] in Figure 2 The arrow in the figure shows a schematic diagram in which the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section 101 with a smaller inner diameter, i.e., a smaller internal space, and then flow sideways into the mixing pipe 201 with a larger inner diameter, i.e., a larger internal space.
[0040] In one embodiment, the mud inlet connecting pipe section 101 is arranged vertically, the mixing pipe 201 is arranged horizontally in the left-right direction and the left and right ends are closed, the upper end of the mud inlet connecting pipe section 101 is used to connect to the mud delivery pipe of the dredging ship and the lower end is vertically tangently connected to the bottom of the left end side wall of the mixing pipe 201, see Figure 1 and Figure 2 .
[0041] The dosing port connecting pipe section 301 is parallel to the mixing pipe 201, and the dosing port connecting pipe section 301 is connected to the middle position of the mud inlet connecting pipe section 101. Figure 1 and Figure 2 Since the mixing pipe 201 is perpendicular to the mud inlet connecting pipe section 101, and the dosing port connecting pipe section 301 is parallel to the mixing pipe 201, the dosing port connecting pipe section 301 is perpendicular to the mud inlet connecting pipe section 101, so that the dredged sludge entering the mud inlet connecting pipe section 101 and the dewatering aid entering the mud inlet connecting pipe section 101 can realize vertical collision at the middle position in the mud inlet connecting pipe section 101, thereby increasing the collision force between the dredged sludge and the dewatering aid in the mud inlet connecting pipe section 101, and improving the effect of the initial mixing of the dredged sludge and the dewatering aid in the mud inlet connecting pipe section 101.
[0042] The mud outlet connecting pipe section 401 is arranged vertically, the upper end of the mud outlet connecting pipe section 401 is vertically tangently connected to the bottom of the right end side wall of the mixing pipe 201, and the lower end is used to connect to the mud outlet pipe. Figure 1 and Figure 4 ; or the mud outlet connecting pipe section 401 is arranged horizontally along the front-to-back direction, the rear end of the mud outlet connecting pipe section 401 is vertically tangently connected to the bottom of the right end side wall of the mixing pipe 201, and the front end is used to connect to the mud outlet pipe. In this way, the mud after the mud and water separation is fully realized in the mixing pipe 201 can enter the mud outlet connecting pipe section 401 in the form of lateral outflow. Preferably, a transparent observation tube 501 is also connected to the mud outlet connecting pipe section 401 at a position close to the end connected to the mud outlet pipe, and a valve 502 is provided on the transparent observation tube 501, and the axis of the transparent observation tube 501 is perpendicular to the axis of the mud outlet connecting pipe section 401 and the mixing pipe 201. Figure 1 and Figure 4 Thus, when the valve 502 is opened, part of the mud in the mud outlet connecting pipe section 401 will enter the transparent observation tube 501, and the mud-water separation effect in the mud can be monitored through the transparent observation tube 501, so as to adjust the dosage of the dehydration aid in time.
[0043] in Figure 4 The arrow in the figure shows a schematic diagram of the mud after the mud-water separation is fully achieved in the mixing pipe 201, which flows out laterally into the mud outlet connecting pipe section 401.
[0044] In one embodiment, the plurality of tooth ridges 202 are divided into a plurality of tooth ridge groups along the extending direction of the mixing pipe 201, the spacing between adjacent tooth ridge groups along the extending direction of the mixing pipe 201 is equal, and the number of tooth ridges 202 in each tooth ridge group is equal. Figure 3 The multiple teeth ridges 202 in each tooth ridge group are evenly distributed along the inner wall of the mixing pipe 201 at the corresponding position. Figure 2 and Figure 4 .
[0045] In one embodiment, one end of the mud inlet connecting pipe section 101 is connected to the mud delivery pipeline of the dredging vessel through the first flange 102. Figure 1 and Figure 5 The other end of the dosing port connecting pipe section 301 is connected to the dehydration aid delivery pipeline through the second flange 302. Figure 1 and Figure 6 The other end of the mud outlet connecting pipe section 401 is connected to the mud outlet pipe through the third flange 402. Figure 1 and Figure 7 .
[0046] In one embodiment, the inner diameter of the dosing port connecting pipe section 301 is smaller than the inner diameter of the mud inlet connecting pipe section 101, and the inner diameter of the mud outlet connecting pipe section 401 is smaller than the inner diameter of the mixing pipe 201. Figure 1 .
[0047] A method for mixing dredged sludge and a dewatering aid in a pipeline, using the above-mentioned pipeline dosing and mixing device for mixing, comprises the following steps:
[0048] S1, connect one end of the mud inlet connecting pipe section 101 to the mud delivery pipeline of the dredging vessel, connect the other end of the dosing port connecting pipe section 301 to the dewatering aid delivery pipeline, and connect the other end of the mud outlet connecting pipe section 401 to the mud outlet pipeline;
[0049] S2, start the dredging ship and carry out dredging operation, the dredged sludge is transported to the mud inlet connecting pipe section 101 through the dredging ship sludge delivery pipeline, and at the same time, the dosing equipment connected to the dehydration aid delivery pipeline is started, and the dehydration aid output by the dosing equipment is transported to the mud inlet connecting pipe section 101 through the dehydration aid delivery pipeline and the dosing port connecting pipe section 301 in sequence;
[0050] S3, the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section 101 and then enter the mixing pipe 201 by way of lateral inflow. The rotating water flow generated by the lateral inflow in the mixing pipe 201 realizes secondary full mixing of the dredged sludge and the dewatering aid. At the same time, the flow picking effect of each tooth ridge 202 is used to realize full collision between the dredged sludge and the dewatering aid, and to realize full mixing of the dredged sludge and the dewatering aid, and to realize full separation of mud and water in the dredged sludge;
[0051] S4. After the mud and water separation is fully achieved in the mixing pipe 201, the mud enters the mud outlet connecting pipe section 401 through the lateral outflow, and is transported to the downstream solidification equipment through the mud outlet pipe for the sludge solidification treatment. When the valve 502 is opened, part of the mud in the mud outlet connecting pipe section 401 will enter the transparent observation tube 501. The mud and water separation effect in the mud is monitored through the transparent observation tube 501, so as to adjust the dosage of the dehydration aid in time.
[0052] In summary, after a preliminary mixing of the dredged sludge and the dewatering aid in the mud inlet connecting pipe section 101 with a smaller inner diameter, i.e., a smaller internal space, the dredged sludge and the dewatering aid can enter the mixing pipe 201 with a larger inner diameter, i.e., a larger internal space, in the form of a lateral inflow, and the rotating water flow generated by the lateral inflow in the mixing pipe 201 can achieve a secondary full mixing of the dredged sludge and the dewatering aid. At the same time, the flow-selecting effect of each tooth ridge 202 on the inner wall of the mixing pipe 201 can be used to achieve a full collision between the dredged sludge and the dewatering aid, thereby achieving a full mixing of the dredged sludge and the dewatering aid, thereby achieving a full separation of mud and water in the dredged sludge. Therefore, through the pipeline dosing mixing device, the dredged sludge in the mud inlet connecting pipe section 101 can be fully mixed with the dewatering aid in the mixing pipe 201 before entering the solidification equipment, and efficient and full separation of mud and water in the dredged sludge can be achieved, so as to improve the solidification effect of the sludge, reduce the water content of the sludge after solidification, and thus reduce the cost of transporting solidified soil.
[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.
Claims
1. A pipeline dosing and mixing device, characterized in that: The invention comprises a mud inlet connecting pipe section (101), one end of which is used to be connected to a mud conveying pipeline of a dredging vessel, and the other end of which is vertically and tangentially connected to one end of a mixing pipeline (201). The mud inlet connecting pipe section (101) is also connected to one end of a dosing port connecting pipe section (301), and the other end of the dosing port connecting pipe section (301) is used to be connected to a dehydration aid conveying pipeline. The other end of the mixing pipeline (201) is connected to the mud outlet connecting pipe section. The mixing pipe (201) is connected to one end of the mud outlet connecting pipe section (401), and the other end of the mud outlet connecting pipe section (401) is used to be connected to the mud outlet pipe. The inner diameter of the mixing pipe (201) is larger than the inner diameter of the mud inlet connecting pipe section (101), and a plurality of toothed ridges (202) are arranged around the inner wall of the mixing pipe (201). The mixing pipe (201) is used to evenly mix the dredged sludge discharged through the mud inlet connecting pipe section (101) with the dewatering aid, and to separate the dredged sludge from water.
2. A pipeline dosing and mixing device according to claim 1, characterized in that: The mud inlet connecting pipe section (101) is arranged vertically, the mixing pipe (201) is arranged horizontally in the left-right direction and its left and right ends are closed, the upper end of the mud inlet connecting pipe section (101) is used to connect to the mud delivery pipe of the dredging ship, and the lower end is vertically tangently connected to the bottom of the left end side wall of the mixing pipe (201).
3. A pipeline dosing and mixing device according to claim 2, characterized in that: The dosing port connecting pipe section (301) is parallel to the mixing pipe (201), and the dosing port connecting pipe section (301) is connected to the middle position of the mud inlet connecting pipe section (101).
4. A pipeline dosing and mixing device according to claim 2, characterized in that: The mud outlet connecting pipe section (401) is arranged vertically, the upper end of the mud outlet connecting pipe section (401) is vertically tangentially connected to the bottom of the right end side wall of the mixing pipe (201), and the lower end is used to connect to the mud outlet pipe; Alternatively, the mud outlet connecting pipe section (401) is arranged horizontally in the front-to-back direction, the rear end of the mud outlet connecting pipe section (401) is vertically tangently connected to the bottom of the right end side wall of the mixing pipe (201), and the front end is used to connect to the mud outlet pipe.
5. A pipeline dosing and mixing device according to claim 4, characterized in that: A transparent observation tube (501) is also connected to the mud outlet connecting pipe section (401) at a position close to one end connected to the mud outlet pipe, and a valve (502) is provided on the transparent observation tube (501). The axis of the transparent observation tube (501) is perpendicular to the axes of the mud outlet connecting pipe section (401) and the mixing pipe (201).
6. A pipeline dosing and mixing device according to claim 1, characterized in that: The plurality of tooth ridges (202) are divided into a plurality of tooth ridge groups along the extension direction of the mixing pipe (201); the spacing between adjacent tooth ridge groups along the extension direction of the mixing pipe (201) is equal; the number of tooth ridges (202) in each tooth ridge group is equal; and the plurality of tooth ridges (202) in each tooth ridge group are evenly distributed around the inner wall at corresponding positions of the mixing pipe (201).
7. A pipeline dosing and mixing device according to claim 1, characterized in that: One end of the mud inlet connecting pipe section (101) is used to connect to the mud delivery pipeline of the dredging vessel through a first flange (102), the other end of the drug adding port connecting pipe section (301) is used to connect to the dewatering agent delivery pipeline through a second flange (302), and the other end of the mud outlet connecting pipe section (401) is used to connect to the mud outlet pipeline through a third flange (402).
8. The pipeline dosing and mixing device according to claim 1, characterized in that: The inner diameter of the drug adding port connecting pipe section (301) is smaller than the inner diameter of the mud inlet connecting pipe section (101), and the inner diameter of the mud outlet connecting pipe section (401) is smaller than the inner diameter of the mixing pipe (201).
9. A method for mixing dredged sludge and a dewatering aid in a pipeline, using the pipeline dosing and mixing device as described in any one of claims 1 to 8 for mixing, characterized in that: The following steps are involved: S1, the desilted sludge is transported to the sludge inlet connecting pipe section (101) through the sludge transport pipeline of the dredging ship, and the dehydration aid is transported to the sludge inlet connecting pipe section (101) through the dehydration aid transport pipeline and the dosing port connecting pipe section (301) in sequence; S2, the dredged sludge and the dewatering aid are initially mixed in the mud inlet connecting pipe section (101) and then enter the mixing pipe (201) by way of lateral inflow, and the sludge and the dewatering aid are fully mixed for a second time in the mixing pipe (201) by the rotating water flow generated by the lateral inflow, and at the same time, the sludge and the dewatering aid are fully collided and fully mixed by the tooth ridges (202), and the mud and water in the dredged sludge are fully separated; S3, the mud after the mud-water separation is fully achieved in the mixing pipe (201) enters the mud outlet connecting pipe section (401), and is transported to the downstream solidification equipment through the mud outlet pipe to perform sludge solidification treatment.
10. The method for mixing dredging sludge and a dewatering aid in a pipeline according to claim 9, characterized in that: Before step S1, the method further includes the following steps: connecting one end of the mud inlet connecting pipe section (101) to the mud delivery pipeline of the dredging vessel, connecting the other end of the drug adding port connecting pipe section (301) to the dewatering aid delivery pipeline, and connecting the other end of the mud outlet connecting pipe section (401) to the mud outlet pipeline; Step S1 specifically comprises: starting a dredging vessel and performing dredging operations, wherein the dredged sludge is transported to the sludge inlet connecting pipe section (101) through the sludge transport pipeline of the dredging vessel, and simultaneously starting a dosing device connected to the dehydration aid transport pipeline, wherein the dehydration aid output by the dosing device is transported to the sludge inlet connecting pipe section (101) through the dehydration aid transport pipeline and the dosing port connecting pipe section (301) in sequence.