River and lake water purification device

Abstract

The invention relates to a river and lake water purification device which comprises a ship body, a water inlet is formed in one side of the ship body, a water outlet is formed in the other side of the ship body, and a gate is installed at the water inlet; the rotary filtering mechanism is installed on the ship body, a water inlet is formed in the side, close to the water inlet, of the rotary filtering mechanism, a filtering cavity of the rotary filtering mechanism is communicated with the water inlet through the water inlet, the rotary filtering mechanism is connected with a water outlet part, and the water outlet part is communicated with the filtering cavity and the water outlet; and the medicine storage mechanism is installed on the ship body and connected with a release pipe, and the end, away from the medicine storage mechanism, of the release pipe extends into the position between the water inlet and the water inlet. The ship body and the rotary filtering mechanism are both installed on the ship body, the ship body can travel to the corresponding water area to treat the water body through the rotary filtering mechanism, and the technical problems that in the related technology, a water treatment device is usually fixed, and when water quality needs to be improved locally in a large water area, it is difficult to flexibly reach the part needing to be treated for rapid treatment are solved.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a river and lake water purification device. Background Art

[0002] Water pollution is one of the main causes of environmental problems, and the current situation of water resources is severe. In order to purify the polluted water environment to a certain extent, artificial wetlands, coagulation sedimentation, air flotation and magnetic coagulation are used in related technologies. However, when artificial wetlands, coagulation sedimentation, air flotation and magnetic coagulation are used for treatment, they occupy a large area and are usually fixed. When the water quality of a large area needs to be improved, it is difficult to flexibly reach the part that needs to be treated for rapid treatment. Summary of the invention

[0003] The present application provides a river and lake water purification device, which can solve the technical problem that when the related technologies use artificial wetlands, coagulation sedimentation, flotation and magnetic coagulation and other treatment methods, they occupy a large area and the devices are usually fixed. When the water quality of a part of a large water area needs to be improved, it is difficult to flexibly reach the part that needs to be treated for rapid treatment.

[0004] In the first aspect, an embodiment of the present application provides a river and lake water purification device, which includes: a hull, a water inlet is provided on one side of the hull, a water outlet is provided on the other side of the hull, and a gate is installed at the water inlet; a rotary filter mechanism, the rotary filter mechanism is installed on the hull, a water inlet is provided on the side of the rotary filter mechanism close to the water inlet, a filter chamber of the rotary filter mechanism is connected with the water inlet through the water inlet, the rotary filter mechanism is connected with a water outlet, and the water outlet is respectively connected with the filter chamber and the water outlet; a medicine storage mechanism, the medicine storage mechanism is installed on the hull, and the medicine storage mechanism is connected with a release tube, and an end of the release tube away from the medicine storage mechanism extends between the water inlet and the water inlet.

[0005] In combination with the first aspect, in one embodiment, the rotary filtration mechanism includes: a filter cartridge, which is rotatably mounted on the hull, the filter cartridge is provided with filter holes on its circumferential side, and a first baffle is installed at one end of the filter cartridge close to the water inlet, the first baffle is provided with a first through-tube hole; a coagulation cartridge, part of the outer wall of the coagulation cartridge is attached to the inner wall of the first through-tube hole, and the coagulation cartridge is coaxially arranged with the filter cartridge, one end of the coagulation cartridge passes through the cavity of the filter cartridge and is provided with the water inlet, and the other end is provided with an opening and extends into the cavity of the filter cartridge, and the coagulation cartridge is fixed with a rotating shaft, and the rotating shaft is mounted on the hull.

[0006] In combination with the first aspect, in one embodiment, the rotary filtering mechanism further includes: a cartridge washing mechanism, the cartridge washing mechanism is fixed to the hull, the cartridge washing mechanism includes a jet pipe, the jet pipe extends along the axial direction of the filter cartridge, and the jet pipe and the filter cartridge are spaced apart along the radial direction of the filter cartridge, and a plurality of jet ports are spaced apart along the extension direction of the jet pipe; a dirt collecting mechanism, the dirt collecting mechanism includes a dirt collecting barrel and a dirt collecting trough connected to the dirt collecting barrel, the dirt collecting barrel is installed on the hull, and the dirt collecting barrel and the filter cartridge are spaced apart, the dirt collecting trough is installed in the cavity of the filter cartridge, the dirt collecting trough extends along the axial direction of the filter cartridge, and the dirt collecting trough and the side wall of the filter cartridge are spaced apart along the radial direction of the filter cartridge, and the opening of the dirt collecting trough faces the jet pipe.

[0007] In combination with the first aspect, in one embodiment, the sewage collecting barrel and the sewage collecting tank are connected by a first pipeline, the bottom panel of the sewage collecting tank extends obliquely along the axis of the filter cartridge, and the distance between the side of the bottom panel close to the first pipeline and the axis of the filter cartridge is smaller than the distance between the side of the bottom panel far from the first pipeline and the axis of the filter cartridge.

[0008] In combination with the first aspect, in one embodiment, a first partition plate is fixed to the hull, the plate surface of the first partition plate is perpendicular to the axis of the filter cartridge, and the first partition plate divides the hull into a raw water section and a filtered water section, the raw water section is connected with the lake water through the water inlet, the raw water section and the filtered water section are connected through the water inlet, and the filter cartridge is installed in the filtered water section; the end of the release tube away from the medicine storage mechanism extends into the raw water section.

[0009] In combination with the first aspect, in one embodiment, the drum washing mechanism also includes a water spray pipe, which extends along the axial direction of the filter cartridge, and the water spray pipe, the filter cartridge and the air jet pipe are all arranged at intervals along the radial direction of the filter cartridge, and a plurality of water spray outlets are installed at intervals along the extension direction of the water spray pipe; the water spray pipe is connected to a backwash water pump, and the backwash water pump is installed in the water filtration section.

[0010] In combination with the first aspect, in one embodiment, the water outlet portion includes a water outlet pipe, one end of which extends into the raw water section and is connected to a water outlet pump, and the other end of which is communicated with the water outlet.

[0011] In combination with the first aspect, in one embodiment, the river and lake water purification device also includes a rudder, the rudder includes a rotating rod and a directional plate fixed to the rotating rod, the rotating rod is rotatably connected to the hull, and the directional plate is opposite to the water outlet.

[0012] In combination with the first aspect, in one embodiment, both ends of the rotating shaft are respectively connected to shaft supports, the shaft supports are fixed to the hull, and the rotating shaft is rotatably connected to the shaft supports; a second water baffle is also installed at the end of the filter cartridge away from the water inlet, the second water baffle is provided with a second through-tube hole, a boss is installed on the circumferential side of the second through-tube hole, and the boss extends along the axial direction of the filter cartridge; the rotary filtering mechanism also includes a first motor, the motor shaft of the first motor is connected to the boss by a first chain, and the motor shaft of the first motor is connected to the rotating shaft by a second chain.

[0013] In combination with the first aspect, in one embodiment, the rotating shaft includes a spiral rod, the inner side walls of the concrete cylinder are in contact with the outer periphery of the spiral blades of the spiral rod, and the distance between two adjacent spiral blades on the spiral rod gradually increases from the water inlet to the opening.

[0014] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0015] By installing both the hull and the rotary filter mechanism on the hull, after the hull sails to the water area that needs to be treated, the gate is opened to allow water to flow into the hull from the water inlet, and the flocculant in the drug storage mechanism is placed between the water inlet and the water inlet through a release tube. Under the action of the flocculant, the water flowing in from the water inlet can undergo preliminary flocculation, and then enters the rotary filter mechanism. After filtering the flocculated impurities, the treated water can be discharged back into the river or lake from the water outlet, thereby solving the technical problem that the water treatment device in the related technology is usually fixed, and when the water quality in a large area needs to be improved, it is difficult to flexibly reach the location that needs to be treated for rapid treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a river and lake water purification device provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the top view of the structure of the river and lake water purification device provided in an embodiment of the present application;

[0019] Figure 3 for Figure 2 Cross-section of the middle AA;

[0020] Figure 4This is a control schematic diagram of the river and lake water purification device provided in an embodiment of the present application.

[0021] In the figure:

[0022] 1. Hull; 11. Water inlet; 12. Gate; 13. Water outlet; 14. First partition; 15. Raw water section; 16. Water filtering section; 17. Rudder;

[0023] 21. coagulation cylinder; 211. water inlet; 2121. spiral rod; 2122. spiral blade; 213. open mouth; 22. filter cartridge; 221. first water baffle; 222. second water baffle; 2221. boss; 23. first motor; 24. rotor; 25. shaft support;

[0024] 3. Drug storage institutions;

[0025] 41. jet pipe; 42. jet port; 43. water jet pipe; 44. water jet port; 45. backwash water pump;

[0026] 51. Sewage collecting tank; 52. Sewage collecting barrel; 53. First pipeline;

[0027] 61. water outlet pipe; 62. water outlet pump;

[0028] 7. Gasoline generator. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] The embodiment of the present application provides a river and lake water purification device, which can solve the technical problem that when the related technologies use artificial wetlands, coagulation sedimentation, flotation and magnetic coagulation and other treatment methods, they occupy a large area and the devices are usually fixed. When the water quality of a part of a large water area needs to be improved, it is difficult to flexibly reach the location that needs to be treated for rapid treatment.

[0031] See also Figure 1As shown, a river and lake water purification device may include: a hull 1, a water inlet 11 is provided on one side of the hull 1, a water outlet 13 is provided on the other side, and a gate 12 is installed at the water inlet 11; a rotary filter mechanism, the rotary filter mechanism is installed on the hull 1, a water inlet 211 is provided on the side of the rotary filter mechanism close to the water inlet 11, the filter chamber of the rotary filter mechanism is connected with the water inlet 11 through the water inlet 211, the rotary filter mechanism is connected with a water outlet, and the water outlet is connected with the filter chamber and the water outlet 13 respectively; a drug storage mechanism 3, the drug storage mechanism 3 is installed on the hull 1, and the drug storage mechanism 3 is connected with a release pipe, and one end of the release pipe away from the drug storage mechanism 3 extends between the water inlet 11 and the water inlet 211. It should be understood that the water inlet 11 and the water inlet 211 can be set to have a small spacing or a large spacing, and the flocculant can be stored in the drug storage mechanism 3.

[0032] In the embodiment of the present application, the hull 1 and the rotary filter mechanism are both installed on the hull 1. The hull 1 is used as a mobile platform, which can drive the rotary filter mechanism and the medicine storage mechanism 3 to move together, so that a small hull 1 and a shallow draft can be used, and rapid treatment can be performed flexibly in specific waters. It should be understood that when the hull 1 has not traveled to the designated area, the gate 12 can be in a closed state, effectively preventing water from flowing into the hull 1 from the water inlet 11, and before the gate 12 is opened, no water flows into the hull 1, and the hull 1 has a very shallow draft, so it is convenient to navigate even in a shallow bay. After the hull 1 travels to the water area to be treated, the gate 12 is opened to allow water to flow into the hull 1 from the water inlet 11, the water level in the hull 1 rises, and the hull 1 slowly sinks. The flocculant in the drug storage mechanism 3 is placed between the water inlet 11 and the water inlet 211 through the release tube. Under the action of the flocculant, the water flowing in from the water inlet 11 can be initially flocculated, and then enters the rotary filter mechanism. After filtering the flocculated impurities, the treated water can be discharged back into the river or lake from the water outlet 13. The technical problem that the water treatment device in the related art is usually fixed and it is difficult to flexibly reach the part that needs to be treated for rapid treatment when the water quality needs to be improved in a part of a large water area is solved.

[0033] In some optional embodiments, the rotary filtering mechanism may include: a filter cartridge 22, which is rotatably mounted on the hull 1, and the filter cartridge 22 is provided with filtering holes on its circumferential side, and a first baffle 221 is installed at one end of the filter cartridge 22 close to the water inlet 11, and the first baffle 221 is provided with a first through-tube hole; a coagulation cartridge 21, wherein part of the outer wall of the coagulation cartridge 21 is attached to the inner wall of the first through-tube hole, and the coagulation cartridge 21 is coaxially arranged with the filter cartridge 22, one end of the coagulation cartridge 21 passes through the cavity of the filter cartridge 22 and is provided with the water inlet 211, and the other end is provided with an opening 213 and extends into the cavity of the filter cartridge 22, and the coagulation cartridge 21 is fixed with a rotating shaft, and the rotating shaft is installed on the hull 1. It should be understood that the filter cartridge 22 can be regarded as a cylindrical structure with a cavity, and the first baffle plate 221 can be regarded as the bottom plate of the cylindrical structure. A first through-hole is provided on the first baffle plate 221, so that the coagulation cartridge 21 can be easily inserted into the cavity of the filter cartridge 22 from the first through-hole. Preferably, the distance between the water inlet 211 and the water inlet 11 is smaller than the distance between the water inlet 11 and the first baffle plate 221, and the inner wall of the first through-hole is tightly fitted with part of the outer wall of the coagulation cartridge 21, so that after the water flows into the hull 1 from the water inlet 11, it can flow into the cavity of the coagulation cartridge 21 from the water inlet 211 of the coagulation cartridge 21, and finally flow into the cavity of the filter cartridge 22 from the open port 213 of the coagulation cartridge 21, and the filter cartridge 22 filters the flocculated water. Preferably, the filter cartridge 22 can be made of a metal woven mesh with a pore size of about 20um. In the embodiment of the present application, by setting up the coagulation cylinder 21, the flow path of water can be increased, so that after the flocculant enters the water between the water inlet 11 and the water inlet 211, the water initially mixed with the flocculant can be more fully mixed in the cavity of the coagulation cylinder 21, thereby enhancing the flocculation result and having a better effect on the polluted water body.

[0034] In some optional embodiments, the rotary filtering mechanism may further include: a cartridge washing mechanism, the cartridge washing mechanism is fixed to the hull 1, the cartridge washing mechanism includes a jet pipe 41, the jet pipe 41 extends along the axial direction of the filter cartridge 22, and the jet pipe 41 and the filter cartridge 22 are spaced apart along the radial direction of the filter cartridge 22, and a plurality of jet ports 42 are spaced apart along the extension direction of the jet pipe 41; a dirt collecting mechanism, the dirt collecting mechanism includes a dirt collecting barrel 52 and a dirt collecting trough 51 connected to the dirt collecting barrel 52, the dirt collecting barrel 52 is installed on the hull 1, and the dirt collecting barrel 52 is spaced apart from the filter cartridge 22, the dirt collecting trough 51 is installed in the cavity of the filter cartridge 22, the dirt collecting trough 51 extends along the axial direction of the filter cartridge 22, and the dirt collecting trough 51 and the side wall of the filter cartridge 22 are spaced apart along the radial direction of the filter cartridge 22, and the opening of the dirt collecting trough 51 is opposite to the jet pipe 41. Preferably, in addition to being radially spaced apart from the filter cartridge 22 along the filter cartridge 22, the sewage collecting tank 51 can also be radially spaced apart from the coagulation cartridge 21 along the filter cartridge 22. Both the filter cartridge 22 and the coagulation cartridge 21 can rotate around their respective axes, but the position of the sewage collecting tank 51 is fixed and does not change. In the embodiment of the present application, after the water flocculates in the coagulation cylinder 21, it enters the filter cylinder 22 from the opening 213 of the coagulation cylinder 21, and the treated water flows out from the pores of the filter cylinder 22, while the floccules are blocked by the pores. At this time, the floccules may adhere to the inner wall of the filter cylinder 22. The jet pipe 41 can be installed on the top of the filter cylinder 22, so that when the filter cylinder 22 is cleaned, the floccules on the filter cylinder 22 can fall down under its own gravity, and then flow into the sewage collection tank 51 from the opening of the sewage collection tank 51. After that, the floccules can fall into the sewage collection barrel 52 connected to the sewage collection tank 51 through the sewage collection tank 51. The sewage collection tank 51 and the sewage collection barrel 52 can be connected through a pipeline, or other methods. The filtering form in the embodiment of the present application can be regarded as using a central mixing rotary microfilter, which can achieve continuous filtering and backwashing without affecting the filtering process.

[0035] Furthermore, the jet port 42 can be set as an air knife, and the distance between each air knife and the side wall of the filter cartridge 22 along the radial direction of the filter cartridge 22 is set to about 2 cm, and each air knife is correspondingly installed with an electric control valve to control the air outlet of the air knife. The cartridge washing mechanism can also include a tank air compressor. When the filter cartridge 22 needs to be cleaned, compressed air enters the jet pipe 41 from the tank air compressor through the air inlet pipeline connecting the jet pipe 41 and the tank air compressor, and then enters the air knife. The compressed air discharged from the air knife is blown from the outside of the filter cartridge 22 to the inside along the radial direction of the filter cartridge 22. The impact force and shear force of the compressed air flow sweep the suspended matter and flocculants attached to the inner wall of the filter screen into the sump 51. The principle of the air knife can be: compressed air enters the high-pressure chamber of the air knife through the air inlet, and the airflow passes through a narrow and thin nozzle to form a balanced airflow sheet in the length direction of the air knife. Due to the shape of the air knife outlet, the compression ratio of the airflow outside the chamber to the high-pressure airflow is 40:1 under the action of the wall effect, which minimizes the loss of airflow velocity and increases the pressure, thus producing an airflow sheet with strong impact force and minimum shear force.

[0036] In some optional embodiments, the dirt collection barrel 52 and the dirt collection tank 51 are connected through a first pipeline 53, and the bottom panel of the dirt collection tank 51 extends obliquely along the axis of the filter cartridge 22, and the distance between the side of the bottom panel close to the first pipeline 53 and the axis of the filter cartridge 22 is smaller than the distance between the side of the bottom panel far from the first pipeline 53 and the axis of the filter cartridge 22. In the embodiment of the present application, the first pipeline 53 can be installed on the side of the dirt collection tank 51 close to the dirt collection barrel 52 to save the connection path of the first pipeline 53 and reduce the movement path of the flocculants. The bottom panel of the dirt collection tank 51 is set to be inclined, so that the flocculants falling into the dirt collection tank 51 can slide into the first pipeline 53 under a certain gravity, and then fall into the dirt collection barrel 52, which accelerates the collection of flocculants and effectively reduces the accumulation of flocculants in the dirt collection tank 51, thereby reducing the number of cleaning times of the dirt collection tank 51 and improving the filtering efficiency.

[0037] See also Figure 2As shown, in some optional embodiments, the hull 1 is fixed with a first partition plate 14, the plate surface of the first partition plate 14 is perpendicular to the axis of the filter cartridge 22, and the first partition plate 14 divides the hull 1 into a raw water section 15 and a filtered water section 16, the raw water section 15 is connected with the lake water through the water inlet 11, the raw water section 15 and the filtered water section 16 are connected through the water inlet 211, and the filter cartridge 22 is installed on the filtered water section 16; the end of the release tube away from the medicine storage mechanism 3 extends into the raw water section 15. In the embodiment of the present application, the cabin space in the hull 1 can be divided into a raw water section 15 and a filtered water section 16 that are not connected to each other by the first partition plate 14. When river and lake water flows into the hull 1 from the water inlet 11, the water first enters the raw water section 15, and does not automatically enter the filtered water section 16 directly from the raw water section 15. At this time, one end of the release tube extends into the raw water section 15, and the flocculant in the drug storage mechanism 3 can be directly released into the raw water section 15. The water at the raw water section 15 can be initially flocculated, which enhances the flocculation effect of the treated water body. The water that has undergone initial flocculation then flows into the coagulation cylinder 21 from the water inlet 211 for secondary flocculation, and the water body to be treated can have a better flocculation effect at this time. It should be understood that in order to achieve the purpose of water treatment, the water outlet 13 opened on the hull 1 should be set away from the raw water section 15 to prevent water from flowing in directly from the water inlet 11 and then flowing out from the water outlet 13 without being treated. Therefore, in the embodiment of the present application, the filter cartridge 22 can be rotatably installed on the hull 1 by setting multiple sets of rotors 24 at the bottom of the filter cartridge 22. The rotor 24 can support the filter cartridge 22 so that there can be a certain gap between the bottom of the filter cartridge 22 and the inner bottom surface of the hull 1. After the treated water flows out of the filter cartridge 22, it can directly flow from the pores on the side wall of the filter cartridge 22 to the water filtration section 16 of the hull 1, and then be discharged from the water outlet 13.

[0038] In some optional embodiments, the cartridge washing mechanism may further include a water spray pipe 43, the water spray pipe 43 extends along the axial direction of the filter cartridge 22, and the water spray pipe 43, the filter cartridge 22 and the air jet pipe 41 are all arranged at intervals along the radial direction of the filter cartridge 22, and a plurality of water spray ports 44 are installed at intervals along the extension direction of the water spray pipe 43; the water spray pipe 43 is connected to a backwash water pump 45, and the backwash water pump 45 is installed in the water filtering section 16. Preferably, each water spray port 44 may be spaced 5 cm from the side wall of the filter cartridge 22 along the radial direction of the filter cartridge 22, and at this time, there may be a certain height difference between the water spray port 44 and the air jet port 42 so that they do not affect each other. By setting the water spray port 44, after the air jet port 42 repeatedly washes the side wall of the filter cartridge 22, when a lot of impurities such as mud, slag and flocculants are accumulated in the sewage collection tank 51, the backwash water cleaning can be automatically started, and the water flow is sprayed from the water spray port 44 to act on the sewage collection tank 51. The impurities in the sewage collection tank 51 flow to the first pipeline 53 under the drive of the water flow, and finally enter the sewage collection barrel 52 from the first pipeline 53. The backwash water pump 45 is installed on the water filter section 16, and the water spray pipe 43 can be connected to the backwash water pump 45 through a connecting water channel. The backwash water pump 45 pumps the treated water from the water filter section 16 into the water spray pipe 43, so as to utilize the resources on the hull 1 to achieve the purpose of cleaning, thereby saving water resources. In some other embodiments, a water storage cylinder can also be installed on the hull 1, and the water storage cylinder is filled with clean water. The water spray pipe 43 is connected to the water storage cylinder through a pipeline to obtain water from the water storage cylinder to clean the sewage collection tank 51. In the embodiment of the present application, by providing a water spray port 44 and other devices, the sewage collection tank 51 can be cleaned regularly and effectively. While cleaning the sewage collection tank 51, the accumulation of impurities on the filter cartridge 22 can also be significantly reduced. The flushing effect of the water flow on the filter cartridge 22 can also help remove the wear and corrosion on the surface of the filter cartridge 22, extend the service life of the filter cartridge 22, and the impurities in the sewage collection tank 51 are flushed into the sewage collection barrel 52 by the water flow, which can also effectively reduce the risk of clogging of the filter cartridge 22 and improve the stability and reliability of the river and lake water purification device. The mud residue and other impurities flushed into the sewage collection barrel 52 can be centrally cleared and processed after the hull 1 docks, reducing the disposal cost of the filtered sludge and facilitating the subsequent resource utilization of the backwash sludge.

[0039] In some optional embodiments, the water outlet may include a water outlet pipe 61, one end of which extends into the water filter section 16 and is connected to a water outlet pump 62, and the other end of which is in communication with the water outlet 13. That is, after the treated water flows into the water filter section 16 from the filter cartridge 22, a water outlet pump 62 may be installed in the water filter section 16, and the treated water is re-flowed from the water outlet 13 into the river or lake water through the water outlet pump 62, so as to achieve a circulation process of water treatment, and the hull 1 may also continue to work to treat water in a wider area, thereby improving the treatment efficiency. Furthermore, during the filtering process, a portion of the filter cartridge 22 may be located in the accumulated water in the water filtration section 16. Specifically, when the flocculated water falls from the opening 213 of the coagulation cartridge 21 into the cavity of the filter cartridge 22, the water falls under the action of gravity, and the treated water may pass through the filter screen of the filter cartridge 22 and fall into the bottom plate of the hull 1 of the water filtration section 16, that is, fall into the cavity of the water filtration section 16. The water in the water filtration section 16 may reach a certain water level position of the hull 1. During the filtering process, the filter cartridge 22 rotates at a certain speed, so that the filter cartridge 22 below the water level line is constantly replaced, and the water body can be continuously filtered. After filtering for a period of time, a large amount of impurities such as flocculants are intercepted on the inner side of the filter cartridge 22 and attached to the inner wall of the filter cartridge 22. The rate of flux reduction of the filter cartridge 22 becomes smaller. In the embodiment of the present application, an internal liquid level sensor can be added, which can be installed on the side wall of the hull 1 of the water filtration section 16. When the internal liquid level sensor detects that the water level rises to a certain height, the backwash mode is automatically started. Further, when the backwash mode is started, the controller in the river and lake water purification device can control the start of the storage tank air compressor, and also control the electric control valve to be opened, so that the compressed air can act on the side wall of the filter cartridge 22 from the air knife, and also control the backwash water pump 45 to start, extract part of the treated water from the water filtration section 16 and spray it from the water spray port 44 to act on the sewage collection tank 51.

[0040] In some optional embodiments, the river and lake water purification device may further include a rudder 17, the rudder 17 includes a rotating rod and a directional plate fixed to the rotating rod, the rotating rod is rotatably connected to the hull 1, and the directional plate is directly opposite to the water outlet 13. In the embodiment of the present application, the water outlet pump 62 can provide a certain pressure to the water flowing out of the water outlet 13, and the water flowing out of the water outlet 13 acts on the directional plate to adjust the running direction of the hull 1, and the water with a certain pressure pumped out by the water outlet pump 62 can also be used as the power for the hull 1 to move on the water surface, so as to achieve slow push-type treatment of the lake water along the line. Under the reaction force of the water outlet pump 62, the hull 1 moves forward to achieve processing while moving forward, forming a local push flow reactor to purify the water quality in the area.

[0041] In some optional embodiments, the two ends of the rotating shaft are respectively connected with shaft supports 25, the shaft supports 25 are fixed to the hull 1, and the rotating shaft is rotatably connected to the shaft supports 25; the end of the filter cartridge 22 away from the water inlet 11 is also equipped with a second water baffle 222, the second water baffle 222 is provided with a second tube hole, and a boss 2221 is installed around the second tube hole, and the boss 2221 extends along the axial direction of the filter cartridge 22; the rotary filtering mechanism also includes a first motor 23, the motor shaft of the first motor 23 is connected to the boss 2221 through a first chain, and the motor shaft of the first motor 23 is connected to the rotating shaft through a second chain. The shaft support 25 is fixed to the hull 1, and can support the rotating shaft. Preferably, the two ends of the shaft support 25 pass through the two end surfaces of the filter cartridge 22 respectively. The second water-blocking plate 222 can effectively prevent the water in the coagulation cylinder 21 from flowing out directly from the side of the filter cylinder 22 away from the first water-blocking plate 221, and the second through-tube hole on the second water-blocking plate 222 can facilitate the passage of the rotating shaft, and the first pipeline 53 connecting the sewage collecting bucket 52 and the sewage collecting tank 51 can also pass through the second through-tube hole. Furthermore, the boss 2221 on the second water-blocking plate 222 can protrude toward the side away from the first water-blocking plate 221, so that the motor shaft of the first motor 23 can be connected to the boss 2221 through the first chain, and the first motor 23 can also drive the boss 2221 to drive the filter cylinder 22 as a whole. In the embodiment of the present application, the boss 2221 and the rotating shaft are connected to the motor shaft of the first motor 23 through the first chain and the second chain respectively, so that the first motor 23 can drive the filter cartridge 22 and the coagulation cartridge 21 to rotate independently, that is, the rotation speed of the coagulation cartridge 21 and the filter cartridge 22 outside it can be controlled separately, ensuring that the hydraulic gradient of the mixture in the coagulation cartridge 21 is optimal, so as to achieve adaptability to different water quantities and water qualities.

[0042] See also Figure 3As shown, in some optional embodiments, the rotating shaft may include a spiral rod 2121, and the inner side walls of the concrete drum 21 are fitted with the outer periphery of the spiral blades 2122 of the spiral rod 2121, and the distance between two adjacent spiral blades 2122 on the spiral rod 2121 gradually increases from the water inlet 211 to the opening 213. In the embodiment of the present application, by setting the rotating shaft as a spiral rod 2121, the path of the water flow can be increased in the process of water flowing from the inlet into the cavity of the coagulation cylinder 21 from the opening 213, thereby further enhancing the coagulation effect of water in the coagulation cylinder 21. The distance between two adjacent spiral blades 2122 on the spiral rod 2121 in the direction from the water inlet 211 to the opening 213 gradually increases, so that the velocity distribution of the water flow in the coagulation cylinder 21 is more uniform. Specifically, near the water inlet 211, due to the small distance between the spiral blades 2122, the water flow is subject to greater resistance and has a slower speed; as the water flow moves toward the opening 213, the distance between the spiral blades 2122 gradually increases, the resistance to the water flow decreases, and the speed gradually increases. This optimization of the velocity distribution helps to reduce eddies and turbulence in the water flow, that is, the stirring velocity gradient of the water body in the cylinder decreases, which meets the dynamic requirements of flocculation and water mixing, so that the water flow and the flocculant can further fully complete flocculation. Furthermore, the inner side wall of the coagulation cylinder 21 is in contact with the outer periphery of the spiral blade 2122 on the spiral rod 2121 , thereby effectively preventing water from flowing out from between the spiral blade 2122 and the inner side wall of the coagulation cylinder 21 .

[0043] In the embodiment of the present application, by adopting micro-flocculation and surface filtration of the filter cartridge 22, the flocculation time can be reduced, and the suspended matter and algae in the water body enter the filtration process as soon as they form small flocs. In addition, through the side wall filtration of the filter cartridge 22 and the cooperation of the cartridge washing mechanism, continuous filtration and backwashing can be achieved without affecting the filtration process. Furthermore, the flocculation cartridge is sleeved in the filter cartridge 22, which can achieve filtration and flocculation at the same time, greatly increasing the space utilization rate of the equipment; and the hull 1 adopts a semi-submerged form, and the lake water enters the equipment by gravity, which can reduce the head of the water pump and reduce energy consumption. The water outlet pump 62 can adopt a permanent magnet axial flow water pump with a large flow and low head, which is arranged in the water filtration section 16 to form a negative pressure suction, so that the water inlet 211 can continuously take in water, and the pressure water flow at the water outlet 13 serves as the driving force for the hull 1 to move and purify.

[0044] In the embodiment of the present application, the operation process of the hull 1 can use the gasoline generator 7 as the power source of the device, and the drug storage mechanism 3 can include not only a flocculant storage cylinder but also a coagulant storage cylinder. The dosing pumps in the flocculant storage cylinder and the coagulant storage cylinder are respectively connected to variable frequency motors. In addition, an inlet pump is installed at the water inlet 11 to connect the inlet pump to the variable frequency motor. The first motor 23 installed at the filter cartridge 22 and the coagulation cartridge 21 can also be a variable frequency motor. The variable frequency motors connected to the dosing pumps of the flocculant storage cylinder and the coagulant storage cylinder can respectively control the dosage of flocculant and the dosage of coagulant, and the variable frequency motor connected to the water inlet pump at the water inlet 11 can control the water inlet volume of the water inlet 11, and the variable frequency motors connected to the filter cartridge 22 and the coagulation cartridge 21 can respectively control the rotation speed of the filter cartridge 22 and the coagulation cartridge 21. Specifically, when the hull 1 closes the gate 12 and moves to the river or lake waters, the water quality monitoring device installed on the outer wall of the hull 1 near the gate 12 can monitor the turbidity and algae density of the water around the hull 1, and according to the data of the outlet turbidity meter, by calculating the deviation from the target value preset by the system, the output flow rate of the flocculant and coagulant dosing pump, the water volume at the water inlet 11, the rotation speed of the coagulation drum 21 and the rotation speed of the filter drum 22 are controlled according to the size of the deviation, so as to finally achieve the purpose of stabilizing the outlet turbidity near the target value. This control method can be regarded as feedback control. According to the deviation range between the actual value and the target value of the outlet turbidity, the feedback control strategies that the system can select include traditional PID (proportional, integral, derivative) control and slope control. The former can keep the actual value of the outlet turbidity stable by continuously reducing the deviation value, and the latter can make the system respond quickly when the deviation is small to deal with some sudden changes. Among them, PID control actually uses a cascade control method. For the control principle, see Figure 4 .

[0045] Furthermore, the system can have parameter setting capabilities, and engineers can set feedback. The target value, dead zone range and other parameters required in the control are used to adjust the operating effect of the system. The target value is to stably control the turbidity of the outlet water at a certain value, and the dead zone range is used to set the response range of the system. When the actual value falls within the dead zone, the system will not perform control actions, thereby reducing the number of control times. Under the premise of stably controlling the turbidity of the outlet water, avoid frequent system actions from causing too much impact on the dosing pump and motor equipment.

[0046] Furthermore, since the water quality of lakes is not uniform and is easily affected by the external environment and fluctuates, the drastic changes in the influent will bring a relatively large impact to the feedback control, making the control effect worse or causing oscillations. Therefore, feedforward control can be introduced to reduce this impact and ensure that the control effect remains stable. Through the testing and debugging of a large number of lake water quality samples, the control system presets the corresponding control parameters within different influent turbidity and algae density ranges. According to the influent water quality, the device will start and run according to the pre-set parameters.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 a limitation on the present application. 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A river and lake water purification device, characterized in that: It includes: A hull (1), wherein a water inlet (11) is provided on one side of the hull (1), and a water outlet (13) is provided on the other side of the hull, and a gate (12) is installed at the water inlet (11); A rotary filter mechanism, the rotary filter mechanism being mounted on the hull (1), a water inlet (211) being provided on a side of the rotary filter mechanism close to the water inlet (11), a filter chamber of the rotary filter mechanism being connected to the water inlet (11) via the water inlet (211), and a water outlet being connected to the rotary filter mechanism, the water outlet being connected to the filter chamber and the water outlet (13) respectively; A medicine storage mechanism (3), the medicine storage mechanism (3) is installed on the hull (1), and the medicine storage mechanism (3) is connected to a release tube, and one end of the release tube away from the medicine storage mechanism (3) extends between the water inlet (11) and the water inlet (211).

2. The river and lake water purification device according to claim 1, characterized in that: The rotary filtering mechanism comprises: A filter cartridge (22), the filter cartridge (22) being rotatably mounted on the hull (1), a filter hole being provided on a peripheral side of the filter cartridge (22), and a first water blocking plate (221) being installed at one end of the filter cartridge (22) close to the water inlet (11), the first water blocking plate (221) being provided with a first through-tube hole; A coagulation cylinder (21), part of the outer wall of the coagulation cylinder (21) is in contact with the inner wall of the first through-hole, and the coagulation cylinder (21) is coaxially arranged with the filter cylinder (22), one end of the coagulation cylinder (21) passes through the cavity of the filter cylinder (22) and is provided with the water inlet (211), and the other end is provided with an opening (213) and extends into the cavity of the filter cylinder (22), and a rotating shaft is fixed to the coagulation cylinder (21), and the rotating shaft is installed on the hull (1).

3. The river and lake water purification device according to claim 2, characterized in that: The rotary filtering mechanism also includes: A cartridge washing mechanism, the cartridge washing mechanism being fixed to the hull (1), the cartridge washing mechanism comprising an air jet pipe (41), the air jet pipe (41) extending along the axial direction of the filter cartridge (22), the air jet pipe (41) and the filter cartridge (22) being arranged at intervals along the radial direction of the filter cartridge (22), and a plurality of air jet ports (42) being installed at intervals along the extension direction of the air jet pipe (41); A sewage collecting mechanism, the sewage collecting mechanism comprising a sewage collecting barrel (52) and a sewage collecting trough (51) connected to the sewage collecting barrel (52), the sewage collecting barrel (52) being installed on the hull (1), and the sewage collecting barrel (52) and the filter cartridge (22) being spaced apart, the sewage collecting trough (51) being installed in the cavity of the filter cartridge (22), the sewage collecting trough (51) extending along the axial direction of the filter cartridge (22), and the sewage collecting trough (51) and the side wall of the filter cartridge (22) being spaced apart along the radial direction of the filter cartridge (22), and the opening of the sewage collecting trough (51) facing the jet pipe (41).

4. The river and lake water purification device according to claim 3, characterized in that: The dirt collecting barrel (52) and the dirt collecting tank (51) are connected via a first pipeline (53); a bottom panel of the dirt collecting tank (51) extends obliquely along the axis of the filter cartridge (22); and a distance between a side of the bottom panel close to the first pipeline (53) and the axis of the filter cartridge (22) is smaller than a distance between a side of the bottom panel far from the first pipeline (53) and the axis of the filter cartridge (22).

5. The river and lake water purification device as claimed in claim 4, characterized in that: The hull (1) is fixed with a first partition plate (14), the plate surface of the first partition plate (14) is perpendicular to the axis of the filter cartridge (22), and the first partition plate (14) divides the hull (1) into a raw water section (15) and a filtered water section (16), the raw water section (15) is connected to lake water through the water inlet (11), the raw water section (15) and the filtered water section (16) are connected through the water inlet (211), and the filter cartridge (22) is installed on the filtered water section (16); One end of the release tube away from the medicine storage mechanism (3) extends into the raw water section (15).

6. The river and lake water purification device according to claim 5, characterized in that: The cartridge washing mechanism further comprises a water spray pipe (43), the water spray pipe (43) extending along the axial direction of the filter cartridge (22), and the water spray pipe (43), the filter cartridge (22) and the air spray pipe (41) are all arranged at intervals along the radial direction of the filter cartridge (22), and a plurality of water spray ports (44) are installed at intervals along the extension direction of the water spray pipe (43); The water spray pipe (43) is connected to a backwash water pump (45), and the backwash water pump (45) is installed in the water filtering section (16).

7. The river and lake water purification device according to claim 6, characterized in that: The water outlet portion comprises a water outlet pipe (61), one end of which extends into the raw water section (15) and is connected to a water outlet pump (62), and the other end of which is in communication with the water outlet (13).

8. The river and lake water purification device according to claim 7, characterized in that: The river and lake water purification device also includes a rudder (17), the rudder (17) includes a rotating rod and a directional plate fixed to the rotating rod, the rotating rod is rotatably connected to the hull (1), and the directional plate is directly opposite to the water outlet (13).

9. The river and lake water purification device according to claim 8, characterized in that: Both ends of the rotating shaft are respectively connected to shaft support members (25), the shaft support members (25) are fixed to the hull (1), and the rotating shaft is rotatably connected to the shaft support members (25); A second water baffle (222) is also installed at one end of the filter cartridge (22) away from the water inlet (11), the second water baffle (222) is provided with a second tube-penetrating hole, a boss (2221) is installed around the second tube-penetrating hole, and the boss (2221) extends along the axial direction of the filter cartridge (22); The rotary filtering mechanism further comprises a first motor (23), the motor shaft of the first motor (23) being connected to the boss (2221) via a first chain, and the motor shaft of the first motor (23) being connected to the rotating shaft via a second chain.

10. The river and lake water purification device according to claim 2, characterized in that: The rotating shaft comprises a spiral rod (2121), the inner side walls of the coagulation cylinder (21) are in contact with the outer periphery of the spiral blades (2122) of the spiral rod (2121), and the distance between two adjacent spiral blades (2122) on the spiral rod (2121) gradually increases in the direction from the water inlet (211) to the open opening (213).

Images