A cyclone filtration type ballast water filtration device and method

Abstract

The present invention discloses a swirl filtration type ballast water filtration device and method, which relates to the technical field of ballast water filtration, including a support frame, a swirl cylinder fixedly mounted on the support frame, and a water inlet pipe fixedly connected to the side of the swirl cylinder; a swirl part, used to drive the water in the water inlet pipe to rotate in the swirl cylinder, so that the water in the swirl cylinder forms a swirl; a filter part, used to separate the particulate impurities in the water after the swirl, and precipitate and collect the particulate impurities. The advantages are: the present invention adopts a rotating water-carrying method to change the original overflow drainage method into a rotating drainage method, which can not only improve the drainage efficiency and reduce energy loss, but also backwash the filter screen during the drainage process and provide a certain degree of vibration, thereby improving the filtration efficiency, and in the process of rotating water-carrying, it can also perform higher speed centrifugal separation again, further improving the filtration efficiency of ballast water, so that the ballast water is filtered more thoroughly.

Description

Technical Field

[0001] The present invention relates to the technical field of ballast water filtration, and in particular to a cyclone filtration type ballast water filtration device and method. Background Art

[0002] Ballast water is usually used to balance and stabilize ships, but it may carry harmful aquatic organisms, pathogens and other pollutants. When these substances are transferred to new waters, they may pose a threat to the local ecology. Therefore, ballast water filtration devices are needed to treat ballast water to reduce its impact on the environment.

[0003] The commonly used ballast water filter device at present is a cyclone overflow filter device, which separates particulate matter in ballast water by cyclone centrifugal force, and then separates particulate matter from water by overflow. It has a simple structure and high filtration efficiency. However, due to the impact of water flow on the guide plate, this method will produce a large energy loss, thereby reducing the overall filtration efficiency, and can only filter particulate impurities within a certain range within the maximum pump force range of the pump, and the filtration performance is limited. In response to this problem, the announcement number CN110002620B discloses a cyclone filter, which includes a pressure tank, which is provided with an inlet, a clean water outlet and an impurity outlet; a filter pipe and a cyclone channel spirally arranged around the filter pipe are arranged in the pressure tank, wherein the filter pipe is connected to the clean water outlet, the cyclone channel is connected to the inlet and guides the fluid to be purified flowing into the inlet to form a cyclone, the fluid to be purified passes through the cyclone channel to separate impurities, the fluid separated from the impurities flows into the filter pipe, the fluid filtered by the filter pipe flows out from the clean water outlet, and the separated impurities flow out from the impurity outlet.

[0004] The cyclone filter is not limited by size in terms of filtering effect and has low energy consumption. It can also automatically clean the inside of the pressure tank, improving the level of automated operation of the equipment and making the cyclone filter more convenient to use. A filter screen is arranged inside the device to further expand the range of filtering. However, the water outlet method of the cyclone filter adopts an overflow water outlet method. The overflow water is squeezed out by the pressure of the incoming water, and the water at the bottom of the overflow forms a vortex, and the particulate impurities in the vortex will enter the overflow pipe through the overflow and be discharged, resulting in an unsatisfactory filtering effect. Although a filter screen is arranged for further interception, a certain pressure is required for water to pass through the filter screen, which will cause water pressure loss in the vortex and affect the filtering efficiency.

[0005] Therefore, a novel cyclone filtration type ballast water filtration device and method can be used to solve the deficiencies of the prior art. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art of low water output efficiency leading to reduced filtration efficiency and incomplete filtration, and to propose a cyclone filtration type ballast water filtration device and method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A cyclone filtering type ballast water filter device comprises a support frame, a cyclone cylinder fixedly mounted on the support frame, and a water inlet pipe fixedly connected to the side of the cyclone cylinder;

[0009] The swirl part is used to drive the water in the water inlet pipe to rotate in the swirl cylinder, so that the water in the swirl cylinder forms a swirl. The swirl part includes a swirl blade fixedly installed inside the swirl cylinder and a vertical overflow pipe fixedly installed inside the swirl cylinder. The outside of the vertical overflow pipe is fixedly connected to the swirl blade. The vertical overflow pipe passes through and extends out of the top of the swirl cylinder. A plurality of primary filter components are installed on the vertical overflow pipe, and a water transport component is installed inside the vertical overflow pipe. The top of the vertical overflow pipe is fixedly connected to a water outlet pipe.

[0010] The filter part is used to separate the particulate impurities in the water after the cyclone and to precipitate and collect the particulate impurities. The filter part includes a conical cylinder fixedly installed at the bottom of the cyclone cylinder, the top of the conical cylinder is fixedly connected to a sedimentation cylinder, the bottom of the sedimentation cylinder is fixedly installed with an electric control valve 1, and the bottom of the electric control valve 1 is installed with a separation component.

[0011] Preferably, the primary filter assembly includes a plurality of water inlet holes 2 opened on the side below the vertical overflow pipe, a filter net is fixedly installed in each of the water inlet holes 2, and a plurality of baffles matching the corresponding water inlet holes 2 are fixedly installed on the side of the vertical overflow pipe.

[0012] Preferably, the cross-sectional shape of each baffle is crescent-shaped, and each baffle is inclined at a 75-degree angle to the corresponding water inlet hole 2, and the inclination direction of the baffle is opposite to the rotation direction of the swirl blade.

[0013] Preferably, the water transport assembly includes a fixed ring fixedly installed inside the vertical overflow pipe, the fixed ring is provided with a plurality of water inlet holes one matching with the corresponding water inlet holes two, a rotating cylinder is rotatably installed on the fixed ring, spiral blades are fixedly installed inside the rotating cylinder, a driving mechanism is installed between the cyclone cylinder and the spiral blades, a plurality of vibration sedimentation mechanisms matching with the corresponding water inlet holes one are installed on the fixed ring, and a secondary filtering mechanism is installed between the rotating cylinder and the vertical overflow pipe.

[0014] Preferably, the driving mechanism comprises a rotating rod fixedly mounted on the spiral blade, the rotating rod penetrates and extends out of the water outlet pipe, a motor is fixedly mounted on the cyclone cylinder via a bracket, and the driving end of the motor is fixedly connected to the rotating rod.

[0015] Preferably, the vibrating sedimentation mechanism includes a plurality of baffles fixedly mounted on the inner wall of the fixed ring and cooperating with the corresponding water inlet holes, each of the baffles is slidably mounted with a push plate via a sliding plate, each of the push plates is fixedly mounted with a plurality of elastic telescopic rods, a piston plate cooperating with the baffles is fixedly mounted on the telescopic ends of the plurality of cooperating elastic telescopic rods, and a backwashing structure cooperating with the plurality of push plates is mounted on the spiral blade.

[0016] Preferably, the backwash structure includes a disk fixedly mounted at the bottom of the spiral blade, an eccentric rod is fixedly mounted on the disk away from the center of the disk, a plurality of rocker arms are rotatably mounted on the eccentric rod, and each of the rocker arms is rotatably connected to a corresponding push plate.

[0017] Preferably, the secondary filtering mechanism includes a plurality of separation holes 1 arranged vertically in parallel and opened on the side wall of the rotating drum, a plurality of separation holes 2 cooperating with the corresponding separation holes 1 are opened on the side wall of the vertical overflow pipe, a plurality of elastic telescopic rods 2 are fixedly installed on the vertical overflow pipe, and a baffle cooperating with the corresponding separation hole 2 is fixedly installed on the telescopic ends of the cooperating plurality of elastic telescopic rods 2.

[0018] Preferably, the separation component includes a sedimentation barrel fixedly installed at the bottom of the electric control valve 1, the bottom of the sedimentation barrel is fixedly installed with the electric control valve 2, the side of the sedimentation barrel is fixedly connected with a horizontal overflow pipe, and the horizontal overflow pipe is located above the center of the sedimentation barrel.

[0019] The present invention also provides a cyclone filtration type ballast water filtering method, comprising the above-mentioned cyclone filtration type ballast water filtering device, and further comprising the following steps:

[0020] S1. Before cyclone filtration, the ballast water needs to be filtered through a preliminary filtration device to filter out the aquatic plants and large impurities in the ballast water. Then, the filtered ballast water is injected into the cyclone through the water inlet pipe, and the cyclone blades in the cyclone make the ballast water rotate in the cyclone.

[0021] S2. The rotated ballast water will flow into the conical cylinder along the side wall of the cyclone. Since the ballast water is in a rotating state before entering the conical cylinder, it will continue to rotate under the action of inertia after entering the conical cylinder. The bottom width of the conical cylinder is smaller than the top width, so the ballast water will rotate faster and faster, and its centrifugal force will become larger and larger, gradually separating lighter and smaller particle impurities. The particle impurities will be dispersed on the periphery of the ballast water and fall into the sedimentation cylinder. Then, the particle impurities precipitated in the sedimentation cylinder will be discharged through the electric control valve 1, and enter the separation component to continue precipitation. Finally, the particle impurities after precipitation are discharged;

[0022] S3. As the ballast water accumulates in the sedimentation cylinder, the liquid level of the ballast water will rise higher and higher until it is higher than the bottom of the vertical overflow pipe. At this time, the ballast water after centrifugal separation is filtered again under the action of the primary filter component to further reduce the impurities in the ballast water;

[0023] S4. Finally, the ballast water in the vertical overflow pipe is driven vertically upward by the water transport component and discharged from the outlet pipe. During the discharge process, the water transport component will drive the ballast water to rotate, so that the ballast water in the vertical overflow pipe rotates at high speed again, and the rotating ballast water is centrifuged again to reduce the impurity content in the ballast water again. The water transport component can also backwash the primary filter component to achieve the purpose of self-cleaning of the primary filter component.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. When filtering ballast water, the cyclone filter type ballast water filter device can filter the centrifugally separated ballast water by setting a filter net, and at the same time, a rotatable rotating drum and spiral blades are set to carry and lift the ballast water entering the vertical overflow pipe, so that the ballast water has a certain rising speed, which can produce a certain intensity of negative pressure water absorption effect in the vertical overflow pipe, and suck the water outside the vertical overflow pipe into the vertical overflow pipe. Compared with the overflow drainage method, it has a greater discharge speed and higher discharge efficiency, and also reduces the energy loss of the ballast water in the cyclone.

[0026] 2. When filtering ballast water, the cyclone filter type ballast water filter device sets a baffle, a push plate, an elastic telescopic rod, a sliding plate and a piston plate. Under the impact of the ballast water, the piston plate can reciprocate on the push plate through the elastic telescopic rod to vibrate with a small amplitude and high frequency. This is conducive to the stratification of impurities in the ballast water entering the vertical overflow pipe, and has a certain promoting effect on the separation of impurities in the ballast water, thereby improving the filtering efficiency.

[0027] 3. When filtering ballast water, the swirl filter type ballast water filter device can drive the piston plate to move back and forth in the baffle cover by setting a disc, an eccentric rod and a rocker arm, so that a thrust from the inside to the outside is generated in the baffle cover, thereby backwashing and blowing off the impurities adhering to the filter screen, achieving the purpose of automatic cleaning, effectively reducing the probability of filter screen clogging, and thus improving the filtering efficiency of the filter screen.

[0028] 4. When filtering ballast water, the cyclone filter type ballast water filter device can not only drive the ballast water to be lifted out of the water by setting spiral blades, but also make the ballast water generate a rotating centrifugal separation force in the rotating drum. The ballast water is centrifugally separated again by centrifugal force, and the separated impurities will be collected in the separation hole 1. As the rotating drum rotates, the separation hole 1 will intermittently overlap with the separation hole 2 on the vertical overflow pipe, so as to achieve the purpose of intermittent drainage and impurity removal, so as to achieve the purpose of re-separation and impurity removal, and further improve the filtering efficiency of ballast water.

[0029] In summary, the present invention adopts a rotating water-carrying method to change the original overflow drainage method into a rotating drainage method, which can not only improve the drainage efficiency and reduce energy loss, but also backwash the filter screen and provide a certain degree of vibration during the drainage process, thereby improving the filtration efficiency. In the process of rotating water-carrying, higher-speed centrifugal separation can be performed again, further improving the filtration efficiency of ballast water and making the ballast water filtered more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a schematic structural diagram of a cyclone filtration type ballast water filtration device proposed by the present invention;

[0032] Figure 2 for Figure 1 Detailed schematic diagram of the structure after the support frame is removed and rotated to a certain angle;

[0033] Figure 3 for Figure 2 A schematic detailed view of the plan structure along one of the angles;

[0034] Figure 4 for Figure 3 Detailed schematic diagram of the three-dimensional structure along the AA section;

[0035] Figure 5 for Figure 4 A detailed schematic diagram of the enlarged structure of the middle sedimentation tank, the electric control valve 1 and the electric control valve 2;

[0036] Figure 6 for Figure 4A detailed schematic diagram of the structure after removing the sedimentation tank, the electric control valve 1 and the electric control valve 2 and rotating them at a certain angle;

[0037] Figure 7 for Figure 6 Detailed schematic diagram of the structure after removing the cyclone tube, water outlet pipe and water inlet pipe;

[0038] Figure 8 for Figure 7 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0039] Fig. 9 for Figure 8 Detailed schematic diagram of the structure after removing the motor and swirl blades and rotating them to a certain angle;

[0040] Fig.10 for Fig. 9 A schematic diagram of the structure after removing the vertical overflow pipe, baffle plate and filter screen;

[0041] Fig.11 for Fig.10 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0042] Fig.12 for Fig.11 A schematic detailed view of the plan structure along one of the angles;

[0043] Fig.13 for Fig.11 An enlarged structural schematic detailed diagram of the middle deflector and its surrounding components;

[0044] Fig.14 for Fig.12 An enlarged structural schematic diagram of one of the deflector covers, push plates and rocker arms;

[0045] Fig.15 for Fig. 9 The schematic diagram of the plane structure of the vertical overflow pipe, baffle plate and filter screen is shown in detail;

[0046] Fig.16 for Fig.15 Detailed schematic diagram of the three-dimensional structure along the BB section;

[0047] Fig.17 for Fig.16 A schematic detailed view of the plan structure along one of the angles;

[0048] Fig.18 for Fig.17 Detailed schematic diagram of the enlarged structure of part C in the middle.

[0049] In the figure: 1 swirl cylinder, 2 conical cylinder, 3 sedimentation cylinder, 4 water outlet pipe, 5 motor, 6 water inlet pipe, 7 support frame, 8 sedimentation barrel, 9 rotating rod, 10 vertical overflow pipe, 11 swirl blade, 12 electric control valve 1, 13 electric control valve 2, 14 horizontal overflow pipe, 15 rotating cylinder, 16 spiral blade, 17 baffle plate, 18 filter screen, 19 fixing ring, 20 separation hole 1, 21 water inlet hole 1, 22 baffle cover, 23 disc, 24 rocker arm, 25 push plate, 26 piston plate, 27 sliding plate, 28 fixing plate, 29 elastic telescopic rod 1, 30 baffle plate, 31 separation hole 2, 32 elastic telescopic rod 2. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Example 1: Reference Figure 1-Figure 4 , Figure 6-Figure 9 , Figure 15-18 , a cyclone filtering type ballast water filtering device, comprising a support frame 7, a cyclone cylinder 1 fixedly mounted on the support frame 7, and a water inlet pipe 6 fixedly connected to the side of the cyclone cylinder 1;

[0052] The swirl part is used to drive the water in the water inlet pipe 6 to rotate in the swirl cylinder 1, so that the water in the swirl cylinder 1 forms a swirl. The swirl part includes a swirl blade 11 fixedly installed inside the swirl cylinder 1 and a vertical overflow pipe 10 fixedly installed inside the swirl cylinder 1. The outside of the vertical overflow pipe 10 is fixedly connected to the swirl blade 11. The vertical overflow pipe 10 passes through and extends out of the top of the swirl cylinder 1. A plurality of primary filter components are installed on the vertical overflow pipe 10, and a water transport component is installed inside the vertical overflow pipe 10. The top of the vertical overflow pipe 10 is fixedly connected to a water outlet pipe 4.

[0053] The length of the swirl blade 11 is the same as that of the swirl tube 1, so that the ballast water can maintain a certain intensity of rotation before entering the conical tube 2, reducing the rotational energy loss of the ballast water. This can effectively increase the centrifugal force of the swirl of the ballast water in the conical tube 2, thereby separating lighter and smaller particulate impurities.

[0054] The primary filter assembly includes a plurality of water inlet holes 2 opened on the side below the vertical overflow pipe 10, each of which has a filter screen 18 fixedly installed in it, and a plurality of baffles 17 matched with the corresponding water inlet holes 2 fixedly installed on the side of the vertical overflow pipe 10.

[0055] Since the ballast water accumulated in the conical cylinder 2 will be driven to rotate by the ballast water newly entering the conical cylinder 2, the ballast water accumulated in the conical cylinder 2 will generate a vortex. The vortex has a certain amount of energy. If the baffle plate 17 is not set, the ballast water can only enter the vertical overflow pipe 10 through the water inlet hole 2 under the action of water pressure. After the baffle plate 17 is set, the ballast water can not only enter the vertical overflow pipe 10 under the action of water pressure, but also enter the vertical overflow pipe 10 under the impact force generated by the vortex, so that the ballast water enters the vertical overflow pipe 10 faster, the water flow rate per unit time is larger, and the filtration efficiency is higher.

[0056] The purpose of setting the filter net 18 is to filter the ballast water before entering the vertical overflow pipe 10, so as to isolate the content of particulate impurities in the ballast water in the vortex (the vortex generated by the ballast water will disperse the surrounding particulate impurities, so the vortex ballast water contains a large amount of particulate impurities), ensuring that the ballast water entering the vertical overflow pipe 10 is relatively clean.

[0057] The cross-sectional shape of each baffle plate 17 is crescent-shaped, and each baffle plate 17 is inclined at a 75-degree angle to the corresponding water inlet hole 2, and the inclination direction of the baffle plate 17 is opposite to the rotation direction of the swirl blade 11 .

[0058] The design of this angle not only considers the contact area between the baffle plate 17 and the ballast water, but also considers the impact force between the ballast water and the baffle plate 17, so seventy-five degrees is the best setting, and the inclination direction of the baffle plate 17 is set to ensure that the ballast water enters the vertical overflow pipe 10 through the filter screen 18 and the water inlet hole 21 under the retention effect of the baffle plate 17.

[0059] In a further embodiment, referring to Figure 1-Figure 4 , Figure 6-Figure 14 The water transport assembly includes a fixed ring 19 fixedly mounted inside the vertical overflow pipe 10, a plurality of water inlet holes 21 matching the corresponding water inlet holes 2 are opened on the fixed ring 19, a rotating cylinder 15 is rotatably mounted on the fixed ring 19, a spiral blade 16 is fixedly mounted inside the rotating cylinder 15, and a driving mechanism is installed between the cyclone cylinder 1 and the spiral blade 16;

[0060] The outer edge of the spiral blade 16 is fixedly connected to the rotating cylinder 15 to achieve a seamless state, which can prevent ballast water from falling from the gap and failing to achieve the effect of carrying water. At the same time, the height of the spiral blade 16 is higher than the bend of the outlet pipe 4 (and Figure 4The middle spiral blade 16 is lower than the height of the bottom of the water outlet pipe 4. The purpose of drawing in this way is to facilitate observation and improve the aesthetics. In addition, the height of the spiral blade 16 can also be lower than the height of the water outlet pipe 4. The ballast water in the vertical section below the water outlet pipe 4 at the upper part of the spiral blade 16 can be pushed by the water pressure brought up by the spiral blade 16, and the ballast water can also be lifted. However, relatively speaking, it will produce a certain amount of energy loss, affecting the drainage efficiency).

[0061] The driving mechanism includes a rotating rod 9 fixedly mounted on the spiral blade 16 , the rotating rod 9 penetrates and extends out of the water outlet pipe 4 , a motor 5 is fixedly mounted on the cyclone 1 through a bracket, and a driving end of the motor 5 is fixedly connected to the rotating rod 9 .

[0062] The rotation of the driving end of the motor 5 drives the rotating rod 9 to rotate. The rotating rod 9 and the spiral blade 16 are seamlessly welded to avoid water leakage. The rotation of the rotating rod 9 drives the spiral blade 16 to rotate. The rotation direction of the spiral blade 16 is opposite to the direction of the swirl blade 11. In this way, the ballast water entering the spiral blade 16 is not only lifted by the rotation of the spiral blade 16, but also can be impacted and lifted under the action of the residual force of the rotation of the swirl blade 11, which can improve the lifting efficiency of the motor 5 at the maximum power and produce an effect greater than the set lifting efficiency.

[0063] A plurality of vibration settling mechanisms matched with the corresponding water inlet holes 21 are installed on the fixed ring 19, and the vibration settling mechanisms include a plurality of baffles 22 fixedly installed on the inner wall of the fixed ring 19 and matched with the corresponding water inlet holes 21, and a push plate 25 is slidably installed on each baffle 22 through a sliding plate 27, and a plurality of elastic telescopic rods 29 are fixedly installed on each push plate 25, and a piston plate 26 matched with the baffle 22 is fixedly installed on the telescopic ends of the plurality of matched elastic telescopic rods 29.

[0064] As the ballast water impacts the piston plate 26, the impact force changes in real time, causing the piston plate 26 to reciprocate on the push plate 25 with a small amplitude and high frequency through the elastic telescopic rod 29, which is beneficial to the stratification of impurities in the ballast water entering the vertical overflow pipe 10, and has a certain promoting effect on the separation of impurities in the ballast water, thereby improving the filtration efficiency.

[0065] Reasons why vibration improves stratification efficiency:

[0066] Enhance particle movement: Kinetic energy transfer. Vibration allows liquid and solid particles to generate higher kinetic energy in the medium. The rapid movement of particles can overcome the effects of gravity and viscosity, thereby accelerating the stratification process. Increase the collision frequency. Under the action of vibration, the collision frequency between particles increases. This collision helps to redistribute the particles, causing heavier particles to settle downward and lighter particles to float upward.

[0067] Reduce viscous resistance: destroy the stability of the fluid layer. Vibration can disturb the flow state of the liquid, break the stability between the fluid layers, reduce the viscous resistance of the liquid, and promote the stratification of liquids with different densities; change the dynamic characteristics of the liquid. Through vibration, the flow characteristics of the fluid will change, increasing the laminar or turbulent degree of the flow, which also helps to improve stratification.

[0068] Improve mass transfer: Accelerate material migration. Vibration helps to increase the migration rate of molecules or particles. Especially in multiphase flow systems, this phenomenon can promote mass transfer between different phases and accelerate the stratification process; increase the diffusion rate. Under the influence of vibration, the diffusion rate of solutes or particles in the liquid is increased, which helps to achieve a better stratification effect.

[0069] A backwashing structure that cooperates with multiple push plates 25 is installed on the spiral blade 16. The backwashing structure includes a disc 23 fixedly installed at the bottom of the spiral blade 16. An eccentric rod is fixedly installed on the disc 23 at a position away from the center of the circle. Multiple rocker arms 24 are rotatably installed on the eccentric rod. Each rocker arm 24 is rotatably connected to the corresponding push plate 25.

[0070] The rotation of the rotating rod 9 drives the disc 23 to rotate, thereby driving the eccentric rod to make a circular motion around the center point of the disc 23, and the eccentric rod will drive the rocker arm 24 to rotate, thereby driving the push plate 25 to move on the corresponding baffle 22 through the sliding plate 27 (multiple push plates 25 move intermittently to achieve the purpose of intermittent water inlet), and the movement of the push plate 25 drives the piston plate 26 to move through the elastic telescopic rod 29, and the piston plate 26 is inserted into the baffle 22, so as to squeeze the ballast water in the baffle 22 outward, backwash the filter 18, and achieve the self-cleaning purpose of the filter 18 (when the distance between the eccentric rod and the push plate 25 reaches the maximum, the piston plate 26 is located outside the corresponding baffle 22, and when the distance between the eccentric rod and the push plate 25 reaches the minimum, the piston plate 26 is located inside the corresponding baffle 22).

[0071] A secondary filtering mechanism is installed between the rotating cylinder 15 and the vertical overflow pipe 10, and the secondary filtering mechanism includes a plurality of separation holes 20 arranged vertically in parallel and opened on the side wall of the rotating cylinder 15, a plurality of separation holes 21 cooperating with the corresponding separation holes 20 are opened on the side wall of the vertical overflow pipe 10, a plurality of elastic telescopic rods 2 32 are fixedly installed on the vertical overflow pipe 10, and a baffle 30 cooperating with the corresponding separation holes 2 31 is fixedly installed on the telescopic ends of the cooperating plurality of elastic telescopic rods 2 32.

[0072] The ballast water entering the fixed ring 19 will be driven upward by the spiral blades 16. As the spiral blades 16 rotate, the ballast water on the spiral blades 16 will also generate a certain intensity of centrifugal force, which can be centrifugally separated again, thereby improving the separation efficiency and making the ballast water filtering more thorough.

[0073] After the impurities in the ballast water are separated, they will move along the inner wall of the rotating cylinder 15 with the water flow. When the water flow moves to the separation hole 1 20, the separated impurities will fall into the separation hole 1 20. As the rotating cylinder 15 rotates, the separation hole 1 20 and the separation hole 2 31 will overlap. At this time, the impurities and part of the ballast water will be thrown out into the cyclone cylinder 1 under the action of centrifugal force (as the ballast water is thrown out, the impact force will impact the baffle 30 to extend the elastic telescopic rod 2 32. At this time, the impurities and part of the ballast water will be thrown out, and then the separation hole 1 20 and the separation hole 2 31 will be misaligned. The baffle 30 loses the impact force of the ballast water and will automatically reset under the action of the elastic telescopic rod 2 32 to block the separation hole 2 31, thereby preventing the unfiltered ballast water in the cyclone cylinder 1 from entering the rotating cylinder 15 through the separation hole 1 20 and the separation hole 2 31).

[0074] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 5 The filter part is used to separate the particulate impurities in the water after the cyclone and to precipitate and collect the particulate impurities. The filter part includes a conical cylinder 2 fixedly installed at the bottom of the cyclone cylinder 1, and the top of the conical cylinder 2 is fixedly connected to a sedimentation cylinder 3. The bottom of the sedimentation cylinder 3 is fixedly installed with an electric control valve 12, and the bottom of the electric control valve 12 is installed with a separation component.

[0075] The separation component includes a sedimentation barrel 8 fixedly installed at the bottom of an electric control valve 12, an electric control valve 2 13 fixedly installed at the bottom of the sedimentation barrel 8, and a horizontal overflow pipe 14 fixedly connected to the side of the sedimentation barrel 8, and the horizontal overflow pipe 14 is located above the center of the sedimentation barrel 8.

[0076] Opening the electric control valve 12 regularly will bring most of the centrifugally separated particulate impurities into the sedimentation barrel 8 for static sedimentation. After a period of sedimentation, open the horizontal overflow pipe 14, and the clarified ballast water at the top will be discharged into other chemical filtration equipment for filtration (the ballast water discharged from the outlet pipe 4 also needs to enter the chemical filtration equipment for re-filtration). Finally, open the electric control valve 2 13 to discharge the filtered particulate impurities. The purpose of this part is to re-filter the water-containing particulate impurities and improve the water discharge rate.

[0077] The specific operation steps of this device are as follows:

[0078] Before the cyclone filtration, the ballast water needs to be filtered through a preliminary filtration device to filter out the aquatic plants and large impurities in the ballast water, and then the filtered ballast water is injected into the cyclone cylinder 1 through the water inlet pipe 6, and the cyclone blades 11 in the cyclone cylinder 1 make the ballast water rotate in the cyclone cylinder 1;

[0079] The ballast water after rotation will flow into the conical cylinder 2 along the side wall of the cyclone cylinder 1. Since the ballast water is in a rotating state before entering the conical cylinder 2, it will continue to rotate under the action of inertia after entering the conical cylinder 2. Moreover, the bottom width of the conical cylinder 2 is smaller than the top width. Therefore, the ballast water will rotate faster and faster, and its centrifugal force will become larger and larger, gradually separating lighter and smaller particle impurities. The particle impurities will be dispersed on the periphery of the ballast water and fall into the sedimentation cylinder 3. Then, the particle impurities precipitated in the sedimentation cylinder 3 will be discharged through the electric control valve 12.

[0080] As the ballast water accumulates in the settling cylinder 3, the liquid level of the ballast water will become higher and higher until it is higher than the bottom of the vertical overflow pipe 10. At this time, the ballast water will generate a vortex. Under the action of the baffle plate 17, the ballast water will be filtered through the filter screen 18, and then enter the fixing ring 19 through the water inlet hole 2 and the water inlet hole 1 21;

[0081] Finally, the motor 5 drives the rotating rod 9 to rotate, and the rotating rod 9 rotates to drive the rotating cylinder 15 and the spiral blades 16 to rotate, so that the ballast water in the fixed ring 19 is lifted upward and discharged from the water outlet pipe 4. During the discharge process, the spiral blades 16 will drive the ballast water to rotate, so that the ballast water in the rotating cylinder 15 rotates at a high speed again, and the rotating ballast water is centrifuged again to reduce the impurity content in the ballast water again. In addition, the rotating rod 9 rotates to drive the disc 23 to rotate, thereby driving the eccentric rod to make a circular motion around the center point of the disc 23. The eccentric rod will drive the rocker arm 24 to rotate, thereby driving the push plate 25 to move on the corresponding baffle 22 through the sliding plate 27. The push plate 25 moves and drives the piston plate 26 to move through the elastic telescopic rod 29, and the piston plate 26 is inserted into the baffle 22, so that the ballast water in the baffle 22 is squeezed outward, and the filter screen 18 is backwashed, so as to achieve the self-cleaning purpose of the filter screen 18.

[0082] At the same time, as the ballast water impacts the piston plate 26 through the water inlet hole 2 and the water inlet hole 1 21, the impact force changes in real time, which will cause the piston plate 26 to reciprocate on the push plate 25 with a small amplitude and high frequency through the elastic telescopic rod 1 29. This is conducive to the stratification of impurities in the ballast water entering the vertical overflow pipe 10, and has a certain promoting effect on the separation of impurities in the ballast water, thereby improving the filtration efficiency.

[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cyclone filtration type ballast water filtration device, comprising a support frame (7), characterized in that: It also includes a cyclone cylinder (1) fixedly mounted on a support frame (7) and a water inlet pipe (6) fixedly connected to a side of the cyclone cylinder (1); A swirl portion, used for driving the water in the water inlet pipe (6) to rotate in the swirl barrel (1), so that the water in the swirl barrel (1) forms a swirl, the swirl portion comprising a swirl blade (11) fixedly mounted inside the swirl barrel (1) and a vertical overflow pipe (10) fixedly mounted inside the swirl barrel (1), the outside of the vertical overflow pipe (10) being fixedly connected to the swirl blade (11), the vertical overflow pipe (10) passing through and extending out of the top of the swirl barrel (1), a plurality of primary filter components being mounted on the vertical overflow pipe (10), a water transport component being mounted inside the vertical overflow pipe (10), and a water outlet pipe (4) being fixedly connected to the top of the vertical overflow pipe (10); The water transport assembly comprises a fixed ring (19) fixedly mounted inside the vertical overflow pipe (10), the fixed ring (19) being provided with a plurality of water inlet holes (21) cooperating with corresponding water inlet holes (2), a rotating cylinder (15) being rotatably mounted on the fixed ring (19), a spiral blade (16) being fixedly mounted inside the rotating cylinder (15), a driving mechanism being mounted between the cyclone cylinder (1) and the spiral blade (16), a plurality of vibration sedimentation mechanisms cooperating with corresponding water inlet holes (21) being mounted on the fixed ring (19), and a secondary filtering mechanism being mounted between the rotating cylinder (15) and the vertical overflow pipe (10); The vibrating sedimentation mechanism comprises a plurality of baffles (22) fixedly mounted on the inner wall of a fixed ring (19) and matched with corresponding water inlet holes (21); a push plate (25) is slidably mounted on each of the baffles (22) via a sliding plate (27); a plurality of elastic telescopic rods (29) are fixedly mounted on each of the push plates (25); a piston plate (26) matched with the baffles (22) is fixedly mounted on the telescopic ends of the plurality of matched elastic telescopic rods (29); and a backwashing structure matched with the plurality of push plates (25) is mounted on the spiral blade (16); The backwashing structure comprises a disk (23) fixedly mounted at the bottom of the spiral blade (16), an eccentric rod fixedly mounted at a position away from the center of the disk (23), a plurality of rocker arms (24) rotatably mounted on the eccentric rod, and each of the rocker arms (24) is rotatably connected to a corresponding push plate (25); A filter section is used to separate particulate impurities in the water after the cyclone and to collect the particulate impurities by sedimentation. The filter section comprises a conical cylinder (2) fixedly mounted at the bottom of the cyclone cylinder (1), the top of the conical cylinder (2) is fixedly connected to a sedimentation cylinder (3), the bottom of the sedimentation cylinder (3) is fixedly mounted with an electric control valve (12), and the bottom of the electric control valve (12) is mounted with a separation component.

2. The cyclone filtration type ballast water filtration device according to claim 1, characterized in that: The primary filter assembly comprises a plurality of water inlet holes 2 provided on the side below the vertical overflow pipe (10), a filter screen (18) being fixedly installed in each of the water inlet holes 2, and a plurality of baffle plates (17) matching the corresponding water inlet holes 2 being fixedly installed on the side of the vertical overflow pipe (10).

3. The cyclone filtration type ballast water filtration device according to claim 2, characterized in that: The cross-sectional shape of each baffle plate (17) is crescent-shaped, and each baffle plate (17) is inclined at an angle of seventy-five degrees to the corresponding water inlet hole 2, and the inclination direction of the baffle plate (17) is opposite to the rotation direction of the swirl blade (11).

4. The cyclone filtration type ballast water filtration device according to claim 1, characterized in that: The driving mechanism comprises a rotating rod (9) fixedly mounted on the spiral blade (16), the rotating rod (9) passing through and extending out of the water outlet pipe (4), a motor (5) fixedly mounted on the cyclone cylinder (1) via a bracket, and a driving end of the motor (5) is fixedly connected to the rotating rod (9).

5. The cyclone filtration type ballast water filtration device according to claim 1, characterized in that: The secondary filtering mechanism comprises a plurality of separation holes (20) arranged vertically in parallel and provided on the side wall of the rotating drum (15); a plurality of separation holes (31) cooperating with the corresponding separation holes (20) are provided on the side wall of the vertical overflow pipe (10); a plurality of elastic telescopic rods (32) are fixedly mounted on the vertical overflow pipe (10); and a baffle (30) cooperating with the corresponding separation holes (31) is fixedly mounted on the telescopic ends of the plurality of elastic telescopic rods (32) cooperating with each other.

6. The cyclone filtration type ballast water filtration device according to claim 1, characterized in that: The separation component comprises a sedimentation barrel (8) fixedly mounted at the bottom of an electric-controlled valve 1 (12), an electric-controlled valve 2 (13) fixedly mounted at the bottom of the sedimentation barrel (8), a horizontal overflow pipe (14) fixedly connected to the side of the sedimentation barrel (8), and the horizontal overflow pipe (14) is located above the center of the sedimentation barrel (8).

7. A cyclone filtration ballast water filtration method, used in the cyclone filtration ballast water filtration device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Before the cyclone filtration is performed, the ballast water needs to be filtered through a preliminary filtering device to filter out the aquatic plants and large impurities in the ballast water. Then, the filtered ballast water is injected into the cyclone drum (1) through the water inlet pipe (6). The cyclone blades (11) in the cyclone drum (1) cause the ballast water to rotate in the cyclone drum (1). S2. The ballast water after rotation will flow along the side wall of the cyclone (1) into the conical cylinder (2). Since the ballast water is in a rotating state before entering the conical cylinder (2), it will continue to rotate under the action of inertia after entering the conical cylinder (2). In addition, the bottom width of the conical cylinder (2) is smaller than the top width. Therefore, the ballast water will rotate faster and faster, and its centrifugal force will become stronger and stronger, gradually separating lighter and smaller particle impurities. The particle impurities will be dispersed on the periphery of the ballast water and fall into the sedimentation cylinder (3). Then, the particle impurities precipitated in the sedimentation cylinder (3) will be discharged through the electric control valve 1 (12), and enter the separation component to continue sedimentation. Finally, the particle impurities after sedimentation are discharged; S3. As the ballast water accumulates in the settling tank (3), the liquid level of the ballast water will become higher and higher until it is higher than the bottom of the vertical overflow pipe (10). At this time, the ballast water after centrifugal separation is filtered again under the action of the primary filter assembly to further reduce the impurities in the ballast water; S4. Finally, the ballast water in the vertical overflow pipe (10) is driven vertically upward by the water transport component and discharged from the water outlet pipe (4). During the discharge process, the water transport component drives the ballast water to rotate, so that the ballast water in the vertical overflow pipe (10) rotates at a high speed again, and the rotating ballast water is centrifuged again to reduce the impurity content in the ballast water again. The water transport component can also perform a backwashing operation on the primary filter component to achieve the purpose of self-cleaning of the primary filter component.

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