Multi-layer purification treatment device for water conservancy river water treatment

Abstract

The invention belongs to the technical field of river water treatment, and particularly relates to a multi-layer purification treatment device for water conservancy river water treatment, which comprises a cylinder for temporarily storing filtered river water, four support legs arranged at the bottom of the cylinder, and an outlet formed in the bottom side of the cylinder; four first supporting rods are uniformly welded to the outer side of the first filtering cylinder, and the four first supporting rods are fixedly mounted on the inner wall of the cylinder and used for conducting third-stage filtering on the river water; and a second filter cartridge. According to the river water filtering device, three-layer filtering can be conducted on river water, the river water is evenly guided to the inner wall of the third filtering cylinder through water flow impact of the river water, and the filtering effect is improved; the three arc-shaped wall scraping plates are driven by the rotating shaft and the three transverse rods to clean the inner walls of the first filter cartridge, the second filter cartridge and the third filter cartridge, so that a metal filter screen, a strip-shaped filter hole and an annular filter hole can be prevented from being blocked, and the purpose of automatic cleaning is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of river water treatment, and in particular to a multi-layer purification treatment device for water conservancy river water treatment. Background Art

[0002] In water conservancy construction, existing water recovery devices often only perform some basic purification treatment on sewage, and the steps are simple and cannot guarantee the safety of water quality; the main methods of river water treatment include physical treatment, biological treatment and chemical treatment. The physical treatment method mainly removes suspended matter and impurities in water through processes such as coagulation, sedimentation and filtration. During the coagulation process, the suspended matter and colloidal impurities in the water are formed into large-particle flocs by adding chemicals, and then gravity separation is carried out through the sedimentation tank to remove the impurity particles with a large specific gravity. Filtration further removes fine impurities through granular filter materials such as quartz sand and anthracite. Biological treatment uses the action of microorganisms to degrade organic pollutants in water. It has the characteristics of low cost, easy operation and environmental friendliness, but it requires good growth conditions and appropriate water quality adjustment. River water is often used for filtration as drinking water in life, and the river water has more impurities and requires multi-layer filtration.

[0003] Publication (Announcement) No.: CN216377798U discloses a multi-layer purification treatment device for water conservancy river water treatment, which relates to the field of water conservancy construction technology. It includes a water inlet, a filtering treatment box and a desulfurization treatment box. The water inlet, the filtering treatment box and the desulfurization treatment box are all columnar structures. The bottom of the water inlet is equipped with a filtering treatment box. The inner wall of the filtering treatment box is provided with an activated carbon filter, an impurity filter and a microporous filter. A heating device is installed at the bottom of the filtering treatment box. A connecting pipe is provided on one side of the heating device. The connecting pipe is connected to the desulfurization treatment box. A reflux pipe and a water outlet are provided at the bottom of the desulfurization treatment box. By setting a filtering treatment box, the sewage is subjected to preliminary impurity removal and heating sterilization treatment, and by setting a desulfurization treatment box, the sewage is further subjected to desulfurization and denitrification operations. By setting a reflux pipe, the sewage is repeatedly desulfurized and reprocessed to ensure that the water quality is non-toxic and harmless. The reasonable process can enhance the safety and health of the recycled water quality.

[0004] Existing river water treatment equipment uses a multi-layer filtration method for treatment, but the multi-layer filter does not have a self-cleaning function and needs to be cleaned by staff, which cannot meet usage requirements. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing river water treatment equipment adopts multi-layer filtration to treat the water, but the multi-layer filter screen has no self-cleaning function and needs to be cleaned by staff, which cannot meet the usage requirements. A multi-layer purification treatment device for water conservancy river water treatment is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A multi-layer purification treatment device for water conservancy river water treatment, comprising:

[0008] A cylinder for temporarily storing filtered river water, wherein four supporting legs are arranged at the bottom of the cylinder, an outlet is arranged at the bottom side of the cylinder, and anti-slip pads are arranged at the bottom of the four supporting legs;

[0009] The first filter cylinder has four first support rods uniformly welded on the outside, and the four first support rods are fixedly mounted on the inner wall of the cylinder for performing a third-level filtration on the river water;

[0010] The second filter cartridge has four second support rods uniformly welded on the outside, and the four second support rods are fixedly mounted on the inner wall of the first filter cartridge for performing a second-stage filtration on the river water;

[0011] The third filter cartridge has four third support rods uniformly welded on the outside, and the four third support rods are fixedly mounted on the inner wall of the second filter cartridge for performing the first-stage filtration of the river water;

[0012] The diversion and cleaning mechanism is rotatably mounted on the first filter cartridge, the second filter cartridge, and the third filter cartridge, and is used to divert river water and clean the inner walls of the first filter cartridge, the second filter cartridge, and the third filter cartridge at the same time. The tops of the cylinder, the first filter cartridge, the second filter cartridge, and the third filter cartridge are flush;

[0013] The water blocking and sealing mechanism is vertically slidably mounted on the cylinder. The first filter cylinder, the second filter cylinder and the third filter cylinder are all provided with drainage holes, and the water blocking and sealing mechanism cooperates with the three drainage holes;

[0014] The water diversion mechanism is used to direct river water into the third filter cartridge for filtration.

[0015] Preferably, an annular hole is opened on the outer side of the first filter cylinder, and a metal filter mesh is fixedly installed on the inner wall of the annular hole, so that the river water can be filtered for a third time.

[0016] Preferably, the second filter cartridge is provided with a plurality of strip-shaped filter holes, which can perform a second filtration on the river water.

[0017] Preferably, the third filter cartridge is provided with a plurality of annular filter holes, which can perform a first filtration on the river water. The apertures of the annular filter holes, the strip-shaped filter holes and the metal filter mesh decrease successively, which can improve the filtering effect of the river water.

[0018] Preferably, the diversion and cleaning mechanism includes a rotating shaft, which is rotatably connected to the first filter cartridge, the second filter cartridge, and the third filter cartridge through a sealed bearing. The outer side of the rotating shaft is provided with a spiral blade in the third filter cartridge, and the surface of the spiral blade is inclined downward. Since the blade surface of the spiral blade is inclined, the river water can be evenly guided to the inner wall of the third filter cartridge to improve the filtering effect. The river water impacts the spiral blade to drive the rotating shaft to rotate, and the rotating shaft drives the three transverse rods to make a circular motion.

[0019] Preferably, three transverse rods are welded to the outer side of the rotating shaft, and the outer ends of the three transverse rods are fixedly installed with arc-shaped scraper plates, which are slidably connected to the inner walls of the first filter barrel, the second filter barrel and the third filter barrel, and the edges of the three arc-shaped scraper plates are provided with inclined surfaces, which are used to clean the inner walls of the first filter barrel, the second filter barrel and the third filter barrel; the rotating shaft drives the three transverse rods to make a circular motion, and the three transverse rods drive the three arc-shaped scraper plates to make a circular motion, and the three arc-shaped scraper plates clean the inner walls of the first filter barrel, the second filter barrel and the third filter barrel, which can avoid clogging of the metal filter mesh, the strip filter holes and the annular filter holes.

[0020] Preferably, the water blocking sealing mechanism includes a vertical rod, and the vertical rod is sealingly slidably mounted on the cylinder. Three rubber sealing plugs are fixedly mounted on the outer side of the vertical rod, and the three rubber sealing plugs cooperate with three drain holes. The top of the rubber sealing plug is provided with an arc surface for sealing the drain holes. A connecting plate is fixedly mounted on the bottom end of the vertical rod, and a linear motor is fixedly mounted on the bottom of the cylinder, and the output shaft of the linear motor is fixedly mounted on the connecting plate; the linear motor pushes the connecting plate to move downward, and the connecting plate drives the vertical rod to move downward, and the vertical rod drives the three rubber sealing plugs to leave the three drain holes, so that the precipitated stains can be discharged from the drain holes. A vertical sliding hole is opened on the cylinder, and a sealing ring is arranged in the vertical sliding hole. The vertical rod is sealingly and slidably connected with the vertical sliding hole through the sealing ring.

[0021] Preferably, the water diversion mechanism includes a fixed plate, a water pump, and a guide pipe. The fixed plate is fixedly installed on the outside of the cylinder, and a transverse plate is fixedly installed on the outside of the fixed plate. A first bayonet groove is opened on the transverse plate, and a second bayonet groove is opened on the top of the fixed plate. The guide pipe cooperates with the first bayonet groove and the second bayonet groove, and the water pump is connected with the bottom end of the guide pipe; when the water pump works, the river water is introduced into the third filter cylinder, and preliminary filtration is performed through the annular hole. The first bayonet groove and the second bayonet groove are used to fix the guide pipe.

[0022] In the present invention, the beneficial effects of the multi-layer purification treatment device for water conservancy river water treatment are:

[0023] In this scheme, the water inlet of the water pump is connected to the river water. The water pump introduces the river water into the third filter cylinder when it is working, and performs preliminary filtration through the annular hole. The river water enters the second filter cylinder and performs secondary filtration through the strip filter hole. The river water enters the first filter cylinder and performs tertiary filtration through the metal filter. The river water after three layers of filtration enters the cylinder and is discharged through the outlet. The river water can be filtered in three layers. The apertures of the annular filter hole, the strip filter hole and the metal filter are successively reduced, which can improve the filtering effect of the river water.

[0024] In this scheme, river water impacts the spiral blade. Firstly, since the blade surface of the spiral blade is inclined, the river water can be evenly guided to the inner wall of the third filter cylinder, thereby improving the filtering effect;

[0025] Secondly, the river water impacts the spiral blades to drive the rotating shaft to rotate, and the rotating shaft drives the three transverse rods to make circular motion, and the three transverse rods drive the three arc-shaped scraper plates to make circular motion, and the three arc-shaped scraper plates clean the inner walls of the first filter cylinder, the second filter cylinder, and the third filter cylinder, which can avoid the blockage of the metal filter screen, the strip filter holes, and the annular filter holes. The cleaned impurities are deposited at the bottom of the first filter cylinder, the second filter cylinder, and the third filter cylinder. After the river water is filtered, the linear motor pushes the connecting plate to move downward, and the connecting plate drives the vertical rod to move downward, and the vertical rod drives the three rubber sealing plugs to leave the three sewage holes, so that the precipitated stains can be discharged from the sewage holes;

[0026] The present invention can perform three-layer filtration on river water, utilize the water flow impact of the river water to evenly guide the river water to the inner wall of the third filter cylinder, thereby improving the filtering effect, utilize the water flow impact of the river water to drive the rotating shaft to rotate, and drive three arc-shaped scraping plates to clean the inner walls of the first filter cylinder, the second filter cylinder, and the third filter cylinder through the rotating shaft and three transverse rods, thereby avoiding clogging of metal filter screens, strip filter holes, and annular filter holes, thereby achieving the purpose of automatic cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a multi-layer purification treatment device for water conservancy river water treatment proposed by the present invention;

[0028] Figure 2 A schematic side view of the structure of a multi-layer purification device for water conservancy river water treatment proposed by the present invention;

[0029] Figure 3 This is a bottom-up structural schematic diagram of a multi-layer purification treatment device for water conservancy river water treatment proposed by the present invention;

[0030] Figure 4 It is a structural schematic diagram of the cylinder, the first filter cartridge, the second filter cartridge, the third filter cartridge, the flow guiding and cleaning mechanism and related parts proposed in the present invention;

[0031] Figure 5 It is a bottom view structural schematic diagram of the cylinder, the first filter cartridge, the second filter cartridge, the third filter cartridge, the flow guiding and cleaning mechanism and related parts proposed by the present invention;

[0032] Figure 6 It is a structural schematic diagram of the cylinder, water diversion mechanism and related parts proposed by the present invention;

[0033] Figure 7 This is a three-dimensional structural schematic diagram of the first filter cartridge and its related parts proposed by the present invention;

[0034] Figure 8 This is a schematic structural diagram of the second filter cartridge and its related parts proposed by the present invention;

[0035] Fig. 9 This is a bottom view structural schematic diagram of the second filter cartridge and its related parts proposed by the present invention;

[0036] Fig.10 This is a schematic structural diagram of the third filter cartridge, the second filter cartridge and related parts proposed by the present invention;

[0037] Fig.11 This is a bottom view of the structure of the third filter cartridge, the second filter cartridge and related parts proposed by the present invention;

[0038] Fig.12 This is a schematic diagram of the structure of the diversion cleaning mechanism and its related parts proposed by the present invention;

[0039] Fig.13 This is a bottom view structural diagram of the diversion and cleaning mechanism and its related parts proposed by the present invention;

[0040] Fig.14 This is a schematic diagram of the structure of the water blocking sealing mechanism and its related parts proposed by the present invention;

[0041] Fig.15 This is a bottom view structural schematic diagram of the water blocking sealing mechanism and its related parts proposed by the present invention;

[0042] Fig.16 This is a bottom view structural diagram of the cylinder and its related parts proposed by the present invention.

[0043] In the figure: 1, cylinder; 11, outlet; 12, support leg; 121, anti-skid pad; 2, first filter cartridge; 21, annular hole; 22, metal filter; 23, first support rod; 3, second filter cartridge; 31, strip filter hole; 32, second support rod; 4, third filter cartridge; 41, annular filter hole; 42, third support rod; 5, diversion and cleaning mechanism; 51, rotating shaft; 52, spiral blade; 53, transverse rod; 54, arc-shaped scraper plate; 541, inclined surface; 6, water blocking and sealing mechanism; 61, linear motor; 62, connecting plate; 63, vertical rod; 64, rubber sealing plug; 641, arc-shaped surface; 7, water diversion mechanism; 71, fixing plate; 72, transverse plate; 73, first bayonet groove; 74, water pump; 75, second bayonet groove; 76, diversion pipe; 8, sewage hole; 9, vertical sliding hole; 91, sealing ring. DETAILED DESCRIPTION

[0044] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0045] Embodiment 1

[0046] Reference Figure 1-Figure 16 , a multi-layer purification treatment device for water conservancy river water treatment, comprising:

[0047] The cylinder 1 is used to temporarily store filtered river water. Four supporting legs 12 are provided at the bottom of the cylinder 1. An outlet 11 is provided at the bottom side of the cylinder 1. Anti-slip pads 121 are provided at the bottom of the four supporting legs 12.

[0048] The first filter cylinder 2 has four first support rods 23 uniformly welded on the outside, and the four first support rods 23 are fixedly mounted on the inner wall of the cylinder 1 for performing the third level filtration on the river water;

[0049] The second filter cartridge 3 has four second support rods 32 uniformly welded on the outside, and the four second support rods 32 are fixedly mounted on the inner wall of the first filter cartridge 2 for performing a second level of filtration on the river water;

[0050] The third filter cartridge 4 has four third support rods 42 uniformly welded on the outside, and the four third support rods 42 are fixedly mounted on the inner wall of the second filter cartridge 3, for performing the first level of filtration on the river water;

[0051] The diversion and cleaning mechanism 5 is rotatably mounted on the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4, and is used to divert the river water and clean the inner walls of the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4 at the same time. The tops of the cylinder 1, the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4 are flush;

[0052] The water blocking sealing mechanism 6 is vertically slidably mounted on the cylinder 1. The first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4 are all provided with drainage holes 8. The water blocking sealing mechanism 6 cooperates with the three drainage holes 8.

[0053] The water diversion mechanism 7 is used to direct river water into the third filter cartridge 4 for filtration.

[0054] Reference Figure 7 In this embodiment, an annular hole 21 is opened on the outer side of the first filter cylinder 2, and a metal filter screen 22 is fixedly installed on the inner wall of the annular hole 21, so that the river water can be filtered for the third time.

[0055] Reference Figure 8 , Fig. 9 In this embodiment, a plurality of strip-shaped filter holes 31 are provided on the second filter cartridge 3, so as to perform a second filtration on the river water.

[0056] Reference Fig.10 , Fig.11 In this embodiment, a plurality of annular filter holes 41 are provided on the third filter cartridge 4, which can perform a first filtration on the river water. The apertures of the annular filter holes 41, the strip filter holes 31 and the metal filter mesh 22 are successively reduced, which can improve the filtering effect of the river water.

[0057] Reference Fig.12 , Fig.13 In this embodiment, the diversion cleaning mechanism 5 includes a rotating shaft 51, which is rotatably connected to the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4 through a sealed bearing. The outer side of the rotating shaft 51 is provided with a spiral blade 52 in the third filter cartridge 4, and the surface of the spiral blade 52 is inclined downward; since the blade surface of the spiral blade 52 is inclined, the river water can be evenly guided to the inner wall of the third filter cartridge 4, thereby improving the filtering effect. The river water impacts the spiral blade 52 to drive the rotating shaft 51 to rotate, and the rotating shaft 51 drives the three transverse rods 53 to make a circular motion.

[0058] It is well known that a sealed bearing is a common bearing with a sealing ring added thereto, and the sealing ring can be used to seal the bearing while the bearing serves as a rotation support.

[0059] Reference Fig.12 , Fig.13In this embodiment, three transverse rods 53 are welded to the outer side of the rotating shaft 51, and arc-shaped scraper plates 54 are fixedly installed on the outer ends of the three transverse rods 53. The three arc-shaped scraper plates 54 are slidably connected to the inner walls of the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4. The edges of the three arc-shaped scraper plates 54 are provided with inclined surfaces 541, and the inclined surfaces 541 of the three arc-shaped scraper plates 54 are used to clean the inner walls of the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4; the rotating shaft 51 drives the three transverse rods 53 to make a circular motion, and the three transverse rods 53 drive the three arc-shaped scraper plates 54 to make a circular motion. The three arc-shaped scraper plates 54 clean the inner walls of the first filter cartridge 2, the second filter cartridge 3, and the third filter cartridge 4, which can avoid clogging of the metal filter screen 22, the strip filter holes 31, and the annular filter holes 41.

[0060] Reference Fig.14 , Fig.15 In this embodiment, the water blocking sealing mechanism 6 includes a vertical rod 63, which is sealingly and slidably mounted on the cylinder 1. Three rubber sealing plugs 64 are fixedly mounted on the outer side of the vertical rod 63. The three rubber sealing plugs 64 cooperate with the three drainage holes 8. The top of the rubber sealing plug 64 is provided with an arc surface 641 for sealing the drainage holes 8. A connecting plate 62 is fixedly mounted on the bottom end of the vertical rod 63. A linear motor 61 is fixedly mounted on the bottom of the cylinder 1. The output shaft of the linear motor 61 is fixedly mounted on the connecting plate 62; the linear motor 61 pushes the connecting plate 62 to move downward, and the connecting plate 62 drives the vertical rod 63 to move downward, and the vertical rod 63 drives the three rubber sealing plugs 64 to leave the three drainage holes 8, so that the precipitated stains can be discharged from the drainage holes 8. A vertical sliding hole 9 is opened on the cylinder 1, and a sealing ring 91 is arranged in the vertical sliding hole 9. The vertical rod 63 is sealingly and slidably connected with the vertical sliding hole 9 through the sealing ring 91.

[0061] Reference Fig.14 , Fig.15 In this embodiment, the water diversion mechanism 7 includes a fixed plate 71, a water pump 74, and a guide tube 76. The fixed plate 71 is fixedly installed on the outer side of the cylinder 1. A transverse plate 72 is fixedly installed on the outer side of the fixed plate 71. A first bayonet groove 73 is opened on the transverse plate 72. A second bayonet groove 75 is opened on the top of the fixed plate 71. The guide tube 76 cooperates with the first bayonet groove 73 and the second bayonet groove 75. The water pump 74 is connected to the bottom end of the guide tube 76; the water pump 74 works to introduce river water into the third filter cartridge 4, and performs preliminary filtration through the annular hole 21. The first bayonet groove 73 and the second bayonet groove 75 are used to fix the guide tube 76.

[0062] Working mode: When in use, the power supply and PLC controller can be turned on to control the electrical appliances. The prior art will not be described in detail here. The whole is installed beside the river, and the water inlet of the water pump 74 is connected to the river water. The water pump 74 works to introduce the river water into the third filter cartridge 4, and the river water is initially filtered through the annular hole 21. The river water enters the second filter cartridge 3 and is filtered twice through the strip filter holes 31. The river water enters the first filter cartridge 2 and is filtered three times through the metal filter mesh 22. The river water after three layers of filtration enters the inside of the cylinder 1 and is discharged through the outlet 11. The river water impacts the spiral blades 52. Firstly, since the blade surface of the spiral blades 52 is inclined, the river water can be evenly guided to the inner wall of the third filter cartridge 4 to improve the filtering effect. Secondly, the river water impacts the spiral blades 52 to drive the rotating shaft 51 to rotate, and the rotating shaft 51 carries The three transverse rods 53 are moved to make circular motion, and the three transverse rods 53 drive the three arc-shaped scraper plates 54 to make circular motion. The three arc-shaped scraper plates 54 clean the inner walls of the first filter cylinder 2, the second filter cylinder 3, and the third filter cylinder 4 to avoid clogging of the metal filter mesh 22, the strip filter holes 31, and the annular filter holes 41. The cleaned impurities are deposited at the bottom of the first filter cylinder 2, the second filter cylinder 3, and the third filter cylinder 4. After the river water is filtered, the linear motor 61 pushes the connecting plate 62 to move downward, and the connecting plate 62 drives the vertical rod 63 to move downward, and the vertical rod 63 drives the three rubber sealing plugs 64 to leave the three sewage holes 8, so that the precipitated stains can be guided out of the sewage holes 8 and then discharged from the outlet 11. After the impurities are discharged, the linear motor 61 is controlled to work in reverse, and the three rubber sealing plugs 64 block the three sewage holes 8.

[0063] Embodiment 2

[0064] The rest of the embodiment 2 is the same as the embodiment 1, except that: the inner wall of the bottom of the cylinder 1 is inclined and inclined toward the rear side, and a discharge port is provided at the rear side of the cylinder 1, and the precipitated impurities are discharged through the discharge port under the effect of the inclination;

[0065] A sealing cover is provided at the top of the cylinder 1, through which sealing can be performed without blocking the drainage of the guide tube 76, thus playing a role of dust prevention, and the sealing cover can be opened;

[0066] All structural shapes, sizes and materials included in the first embodiment of the present application can be selected and adjusted to meet specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0067] The above description is only a preferred specific implementation manner of this embodiment, but the protection scope of this embodiment 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 this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A multi-layer purification device for water conservancy river water treatment, characterized in that: include: A cylinder (1) is used for temporarily storing filtered river water, wherein four supporting legs (12) are arranged at the bottom of the cylinder (1), an outlet (11) is arranged at the bottom side of the cylinder (1), and anti-slip pads (121) are arranged at the bottoms of the four supporting legs (12); A first filter cylinder (2) has four first support rods (23) uniformly welded on the outside, and the four first support rods (23) are fixedly mounted on the inner wall of the cylinder (1) for performing a third-level filtration on river water; The second filter cartridge (3) has four second support rods (32) uniformly welded on the outer side, and the four second support rods (32) are fixedly mounted on the inner wall of the first filter cartridge (2) for performing a second-stage filtration on the river water; A third filter cartridge (4) has four third support rods (42) uniformly welded on the outside, and the four third support rods (42) are fixedly mounted on the inner wall of the second filter cartridge (3) for performing a first-stage filtration of river water; A diversion and cleaning mechanism (5) is rotatably mounted on the first filter cartridge (2), the second filter cartridge (3), and the third filter cartridge (4), and is used to divert river water and simultaneously clean the inner walls of the first filter cartridge (2), the second filter cartridge (3), and the third filter cartridge (4); The water blocking sealing mechanism (6) is vertically slidably mounted on the cylinder (1); the first filter cylinder (2), the second filter cylinder (3), and the third filter cylinder (4) are all provided with drainage holes (8); the water blocking sealing mechanism (6) cooperates with the three drainage holes (8); The water diversion mechanism (7) is used to direct river water into the third filter cartridge (4) for filtration.

2. A multi-layer purification device for water conservancy river water treatment according to claim 1, characterized in that: An annular hole (21) is provided on the outer side of the first filter cylinder (2), and a metal filter screen (22) is fixedly mounted on the inner wall of the annular hole (21).

3. A multi-layer purification device for water conservancy river water treatment according to claim 1, characterized in that: The second filter cartridge (3) is provided with a plurality of strip-shaped filter holes (31).

4. A multi-layer purification device for water conservancy river water treatment according to claim 1, characterized in that: The third filter cartridge (4) is provided with a plurality of annular filter holes (41).

5. The multi-layer purification device for water conservancy river water treatment according to claim 1 is characterized in that: The flow guiding and cleaning mechanism (5) comprises a rotating shaft (51), the rotating shaft (51) being rotatably connected to the first filter cartridge (2), the second filter cartridge (3), and the third filter cartridge (4) via a sealing bearing, and a spiral blade (52) is arranged on the outer side of the rotating shaft (51) in the third filter cartridge (4).

6. A multi-layer purification device for water conservancy river water treatment according to claim 5, characterized in that: The surface of the spiral blade (52) is arranged to be inclined downward.

7. A multi-layer purification device for water conservancy river water treatment according to claim 5, characterized in that: Three transverse rods (53) are welded to the outer side of the rotating shaft (51); arc-shaped scraper plates (54) are fixedly mounted on the outer ends of the three transverse rods (53); the three arc-shaped scraper plates (54) are slidably connected to the inner walls of the first filter cartridge (2), the second filter cartridge (3), and the third filter cartridge (4); the edges of the three arc-shaped scraper plates (54) are provided with inclined surfaces (541); the inclined surfaces (541) of the three arc-shaped scraper plates (54) are used to clean the inner walls of the first filter cartridge (2), the second filter cartridge (3), and the third filter cartridge (4).

8. The multi-layer purification device for water conservancy river water treatment according to claim 1 is characterized in that: The water blocking sealing mechanism (6) comprises a vertical rod (63) which is sealingly and slidably mounted on the cylinder (1). Three rubber sealing plugs (64) are fixedly mounted on the outer side of the vertical rod (63). The three rubber sealing plugs (64) are matched with three drainage holes (8). The top end of the rubber sealing plug (64) is provided with an arc surface (641) for sealing the drainage hole (8).

9. A multi-layer purification device for water conservancy river water treatment according to claim 8, characterized in that: A connecting plate (62) is fixedly mounted on the bottom end of the vertical rod (63), a linear motor (61) is fixedly mounted on the bottom of the cylinder (1), and an output shaft of the linear motor (61) is fixedly mounted on the connecting plate (62).

10. The multi-layer purification device for water conservancy river water treatment according to claim 1, characterized in that: The water diversion mechanism (7) comprises a fixed plate (71), a water pump (74), and a flow guide pipe (76); the fixed plate (71) is fixedly mounted on the outer side of the cylinder (1); a transverse plate (72) is fixedly mounted on the outer side of the fixed plate (71); a first bayonet groove (73) is provided on the transverse plate (72); a second bayonet groove (75) is provided on the top of the fixed plate (71); the flow guide pipe (76) cooperates with the first bayonet groove (73) and the second bayonet groove (75); and the water pump (74) is connected to the bottom end of the flow guide pipe (76).

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