In-pipe dosing device for ship ballast water system
By designing agitator blades and sensor monitoring systems in the ship's ballast water system, the problems of drug sedimentation and inaccurate dosage were solved, achieving uniform mixing and real-time adjustment of the drugs, thus improving the ballast water treatment effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2026-04-10
AI Technical Summary
Existing dosing devices suffer from drug precipitation and stratification in ship ballast water systems, making rapid diffusion and mixing difficult. Furthermore, the dosage cannot be adjusted in real time, resulting in low treatment efficiency and waste of chemicals.
Design an in-pipe chemical dosing device for a ship's ballast water system, equipped with a stirring blade, a flow sensor, and a water quality sensor. The stirring blade is driven by a transmission component to mix the chemical, and a metering pump and a spiral blade inside the mixing pipe are used to achieve uniform mixing of the chemical and ballast water. The dosage is adjusted in real time based on sensor monitoring data.
This process achieves uniform mixing of the drugs, avoids sedimentation and stratification, ensures full diffusion of the drugs, improves processing efficiency and compliance rate, and reduces drug waste.
Smart Images
Figure CN224104291U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ship ballast water treatment technology, and specifically relates to an in-pipe chemical dosing device for ship ballast water systems. Background Technology
[0002] Ballast water is water injected into a ship to ensure its stability and regulate its draft and trim. However, ballast water often carries a large number of invasive species such as microorganisms, algae, and plankton. When these invasive species are discharged into other sea areas as the ship sails, they can cause serious damage to the local ecological environment and may even trigger an ecological disaster.
[0003] Currently, adding chemicals to ballast water systems is a common ballast water treatment method. However, existing chemical dosing devices have several problems during use. For example, when chemicals are left to stand in the dosing tank, sedimentation and stratification can easily occur. Furthermore, freshly injected chemicals are difficult to diffuse and mix thoroughly with the ballast water quickly, leading to excessively high local chemical concentrations. This significantly reduces the overall dosing effect and severely impacts the ballast water treatment efficiency. In addition, it is impossible to accurately adjust the dosing amount in real time based on the ballast water flow and water quality, resulting in chemical waste or substandard treatment. Therefore, there is an urgent need to design a new type of in-pipe chemical dosing device for ship ballast water systems to solve these problems. Utility Model Content
[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an in-pipe chemical dosing device for ship ballast water systems to solve the problems mentioned in the background art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A chemical dosing device for a ship's ballast water system includes a dosing tank. A motor is fixedly connected to one side of the dosing tank. Two stirring blades are rotatably connected inside the dosing tank. A first transmission assembly is located on one side of the dosing tank, with one side of the first transmission assembly connected to one side of the stirring blades. A second transmission assembly is located on one side of the first transmission assembly. The motor is driven by the first and second transmission assemblies. A metering pump is located at the bottom of the dosing tank. An inlet pipe is fixedly connected to the inlet end of the metering pump, and an outlet pipe is fixedly connected to the outlet end of the metering pump. A mixing pipe is located below the metering pump. A spiral blade is rotatably connected inside the mixing pipe. One side of the second transmission assembly is connected to one side of the spiral blade. A main ballast water pipe is located on the side of the mixing pipe away from the dosing tank. A flow sensor is fixedly connected to one side of the main ballast water pipe, and a water quality sensor is fixedly connected to the side of the main ballast water pipe closest to the flow sensor.
[0007] As a preferred technical scheme, the first transmission assembly comprises first shaft rods, the first shaft rods are rotationally connected to the two sides of the inside of the dosing tank, the stirring blades are fixedly connected with the first shaft rods, one side of one of the first shaft rods is fixedly connected with the output end of the motor, one side of the first shaft rod is fixedly connected with a driving gear, one side of the other first shaft rod is fixedly connected with a driven gear, the driving gear and the driven gear are rotationally connected to the dosing tank, the driving gear is in meshing connection with the driven gear, one side of the driven gear away from the driving gear is fixedly connected with a second shaft rod, and the second transmission assembly is arranged on the second shaft rod.
[0008] As a preferred technical scheme, the second transmission assembly comprises a first chain wheel, the first chain wheel is fixedly connected to one side of the second shaft rod, the first chain wheel is in transmission connection with a second chain wheel through a chain, one side of the second chain wheel is fixedly connected with a third shaft rod, and one side of the third shaft rod is fixedly connected with one side of the spiral blade.
[0009] As a preferred technical scheme, the water inlet pipe of the metering pump is fixedly connected with a first guide pipe, and the top end of the first guide pipe is fixedly connected with the bottom end of the dosing tank.
[0010] As a preferred technical scheme, the water outlet pipe of the metering pump is fixedly connected with a second guide pipe, and the bottom end of the second guide pipe is fixedly connected with the top end of the mixing pipe.
[0011] As a preferred technical scheme, the mixing pipe is fixedly connected with a first flange plate on the side close to the ship ballast main pipe, the ship ballast main pipe is fixedly connected with a second flange plate on the side close to the mixing pipe, and the first flange plate and the second flange plate are fixedly connected through bolts.
[0012] To sum up, the utility model mainly has the following beneficial effects:
[0013] First, the utility model discloses a flow sensor and a water quality sensor are installed on the ship ballast main pipe, the flow and water quality of the ballast water are monitored in real time, and the controller is used to calculate according to the monitoring data, the dosing amount is controlled through the metering pump, the dosing amount can be accurately adjusted in real time according to the actual situation of the ballast water, the waste of medicament is avoided, the ballast water can be effectively treated, and the treatment compliance rate is improved.
[0014] Second, the utility model discloses that the stirring blades are installed in the inside of the dosing tank, the medicament in the dosing tank can be stirred, the phenomenon that the medicament is deposited and layered is avoided, the spiral stirring blades in the mixing pipe can stir and mix the medicament and the ballast water, the concentration of the medicament is reduced, the dosing effect is improved, and the treatment effect of the ballast water is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 is a first transmission assembly and a second transmission assembly structure schematic view of the utility model;
[0017] Figure 3 is a one side structure schematic view of the mixing pipe of the utility model;
[0018] Figure 4 is the A place enlarged structure schematic view of the utility model Figure 3 .
[0019] Fig. 1, dosing tank 2, metering pump 21, inlet pipe 22, outlet pipe 3, motor 4, first transmission assembly 41, first shaft 42, driving gear 43, driven gear 44, second shaft 5, second transmission assembly 51, first sprocket 52, chain 53, second sprocket 54, third shaft 6, first conduit 7, second conduit 8, mixing pipe 9, stirring blade 10, first flange plate 11, second flange plate 12, ship ballast main pipe 13, flow sensor 14, water quality sensor. Specific implementation
[0020] Embodiment
[0021] Reference Figures 1 to 4 , the dosing device in the pipe of the ship ballast water system described in the embodiment, including dosing tank 1, one side of dosing tank 1 is fixedly connected with motor 3, the inside of dosing tank 1 is rotatably connected with stirring blade 9, and stirring blade 9 is equipped with two, one side of dosing tank 1 is equipped with first transmission assembly 4, one side of first transmission assembly 4 is connected with one side of stirring blade 9, one side of first transmission assembly 4 is equipped with second transmission assembly 5, motor 3 is drivenly connected with second transmission assembly 5 through first transmission assembly 4, the bottom of dosing tank 1 is equipped with metering pump 2, the water inlet end of metering pump 2 is fixedly connected with inlet pipe 21, the water outlet end of metering pump 2 is fixedly connected with outlet pipe 22, the lower side of metering pump 2 is equipped with mixing pipe 8, the inside of mixing pipe 8 is rotatably connected with spiral blade 10, one side of second transmission assembly 5 is connected with one side of spiral blade 10, one side of mixing pipe 8 away from dosing tank 1 is equipped with ship ballast main pipe 13, one side of ship ballast main pipe 13 is fixedly connected with flow sensor 14, the water flow velocity and volume flow in ship ballast main pipe 13 are monitored in real time, and flow data is provided for controller, is used for calculating the reference parameter of the amount of medicament addition, one side of ship ballast main pipe 13 close to flow sensor 14 is fixedly connected with water quality sensor 15, detects the key parameters in ballast water, feedback dosing effect, realizes dynamic adjustment, and metering pump 2, flow sensor 14, water quality sensor 15 are connected with ship controller.
[0022] With reference to Figure 2 , the first transmission assembly 4 comprises a first shaft 41, the first shaft 41 is rotatably connected on both sides of the inside of the dosing tank 1, the stirring blade 9 is fixedly connected with the first shaft 41, one side of the first shaft 41 is fixedly connected with the output end of the motor 3, one side of the first shaft 41 is fixedly connected with a driving gear 42, the other side of the first shaft 41 is fixedly connected with a driven gear 43, the driving gear 42 and the driven gear 43 are rotatably connected on the dosing tank 1, the driving gear 42 is meshingly connected with the driven gear 43, the side of the driven gear 43 away from the driving gear 42 is fixedly connected with a second shaft 44, and the second transmission assembly 5 is arranged on the second shaft 44; by arranging the first transmission assembly 4, the motor 3 drives the driving gear 42 to rotate, the driving gear 42 drives the driven gear 43 to rotate, and the driving gear 42 and the driven gear 43 drive the first shaft 41 connected therewith to rotate respectively, so that the stirring blade 9 on the surface of the first shaft 41 rotates, and the double stirring blades 9 rotate in opposite directions to form a shear flow field, so that the medicine can be mixed.
[0023] With reference to Figure 2 , the second transmission assembly 5 comprises a first sprocket 51, the first sprocket 51 is fixedly connected on one side of the second shaft 44, the first sprocket 51 is drivingly connected with a second sprocket 53 through a chain 52, one side of the second sprocket 53 is fixedly connected with a third shaft 54, and one side of the third shaft 54 is fixedly connected with one side of the spiral blade 10; by arranging the second transmission assembly 5, the second shaft 44 drives the first sprocket 51 to rotate, the first sprocket 51 drives the second sprocket 53 through the chain 52, the second sprocket 53 drives the third shaft 54 and the spiral blade 10 to rotate synchronously, the spiral blade 10 spirally propels and mixes the fluid in the mixing pipe 8, and the concentration of the medicine is reduced.
[0024] With reference to Figure 3 , the water inlet pipe 21 of the metering pump 2 is fixedly connected with a first conduit 6, the top end of the first conduit 6 is fixedly connected with the bottom end of the dosing tank 1, the water outlet pipe 22 of the metering pump 2 is fixedly connected with a second conduit 7, and the bottom end of the second conduit 7 is fixedly connected with the top end of the mixing pipe 8; by arranging the first conduit 6, the medicament in the dosing tank 1 is guided to enter the metering pump 2, and by arranging the second conduit 7, the medicament of the metering pump 2 is guided to enter the mixing pipe 8.
[0025] With reference to Figure 1The mixing pipe 8 is fixedly connected with a first flange plate 11 near one side of a ship ballast main pipe 13, the ship ballast main pipe 13 is fixedly connected with a second flange plate 12 near one side of the mixing pipe 8, and the first flange plate 11 and the second flange plate 12 are fixedly connected through bolts.
[0026] The principle and advantages are as follows: the motor 3 drives the directly connected first shaft 41 to rotate, the driving gear 42 on the first shaft 41 rotates, the driving gear 42 drives the driven gear 43 to rotate, the driven gear 43 drives the other first shaft 41 to rotate reversely, so that the two first shafts 41 drive the respective connected stirring blades 9 to rotate reversely in the medicine adding box 1, the shear flow field formed by the two stirring blades 9 fully stirs the medicine in the medicine adding box 1, prevents the medicine from depositing and stratifying, realizes the preliminary uniform mixing of the medicine, the driven gear 43 drives the second shaft 44 to rotate, the second shaft 44 drives the first sprocket 51 to rotate, the second sprocket 53 is driven through the chain 52, the third shaft 54 and the connected spiral blade 10 are driven by the second sprocket 53 to rotate synchronously, the power of the motor 3 is transmitted from the medicine adding box 1 to the mixing pipe 8, the ship controller calculates the required optimal amount of medicine according to the water flow speed and volume flow rate in the ship ballast main pipe 13 monitored by the flow sensor 14 and the key parameters of the ballast water detected by the water quality sensor 15, and sends a control signal to the metering pump 2, so that the corresponding amount of medicine is delivered to the mixing pipe 8 through the second conduit 7, the medicine meets the ballast water flowing from the ship ballast main pipe 13 into the mixing pipe 8, at this time, the spiral blade 10 in the mixing pipe 8 continuously rotates to push, shear and disperse the medicine and the ballast water, so that the medicine is rapidly diffused and fully and uniformly mixed with the ballast water, the concentration difference of the medicine in the mixing pipe 8 is effectively reduced, and the mixing effect is improved.
Claims
1. A ship ballast water system in-line chemical dosing device comprising a dosing tank (1), characterized in that: The side of the dosing box (1) is fixedly connected with a motor (3), the inside of the dosing box (1) is rotatably connected with stirring blades (9), and the stirring blades (9) are provided with two, one side of the dosing box (1) is provided with a first transmission assembly (4), one side of the first transmission assembly (4) is connected with one side of the stirring blade (9), one side of the first transmission assembly (4) is provided with a second transmission assembly (5), the motor (3) is drivingly connected with the second transmission assembly (5) through the first transmission assembly (4), the bottom of the dosing box (1) is provided with a metering pump (2), the water inlet end of the metering pump (2) is fixedly connected with a water inlet pipe (21), the water outlet end of the metering pump (2) is fixedly connected with a water outlet pipe (22), the lower side of the metering pump (2) is provided with a mixing pipe (8), the inside of the mixing pipe (8) is rotatably connected with a spiral blade (10), one side of the second transmission assembly (5) is connected with one side of the spiral blade (10), one side of the mixing pipe (8) away from the dosing box (1) is provided with a ship ballast main pipe (13), one side of the ship ballast main pipe (13) is fixedly connected with a flow sensor (14), one side of the ship ballast main pipe (13) close to the flow sensor (14) is fixedly connected with a water quality sensor (15).
2. A ship ballast water system in-line dosing apparatus according to claim 1, characterised in that: The first transmission assembly (4) comprises a first shaft (41), the first shaft (41) is rotatably connected on both sides of the inside of the dosing box (1), the stirring blade (9) is fixedly connected with the first shaft (41), one side of one of the first shafts (41) is fixedly connected with the output end of the motor (3), one side of one of the first shafts (41) is fixedly connected with a driving gear (42), one side of the other first shaft (41) is fixedly connected with a driven gear (43), the driving gear (42) and the driven gear (43) are rotatably connected on the dosing box (1), the driving gear (42) is meshingly connected with the driven gear (43), one side of the driven gear (43) away from the driving gear (42) is fixedly connected with a second shaft (44), and the second transmission assembly (5) is arranged on the second shaft (44).
3. A ship ballast water system in-line dosing apparatus according to claim 2, characterised in that: The second transmission assembly (5) comprises a first sprocket (51), the first sprocket (51) is fixedly connected on one side of the second shaft (44), the first sprocket (51) is drivingly connected with a second sprocket (53) through a chain (52), one side of the second sprocket (53) is fixedly connected with a third shaft (54), and one side of the third shaft (54) is fixedly connected with one side of the spiral blade (10).
4. A ship ballast water system in-line dosing apparatus according to claim 1, characterised in that: The water inlet pipe (21) of the metering pump (2) is fixedly connected with a first conduit (6), and the top end of the first conduit (6) is fixedly connected with the bottom end of the dosing box (1).
5. A ship ballast water system in-line dosing apparatus according to claim 1, characterised in that: The water outlet pipe (22) of the metering pump (2) is fixedly connected with a second conduit (7), and the bottom end of the second conduit (7) is fixedly connected with the top end of the mixing pipe (8).
6. A ship ballast water system in-line dosing apparatus according to claim 1, characterised in that: The mixing pipe (8) is fixedly connected with a first flange plate (11) on one side close to a ship ballast main pipe (13), the ship ballast main pipe (13) is fixedly connected with a second flange plate (12) on one side close to the mixing pipe (8), and the first flange plate (11) and the second flange plate (12) are fixedly connected through bolts.