Centrifugal water purifying device

Abstract

The invention relates to the technical field of water purification devices, and discloses a centrifugal water purification device which comprises a filtering type medium driving mechanism and an elastic expansion type dirt accumulation mechanism. According to the centrifugal water purification device, dirt attached to the outer surface of the conical filter element can generate centrifugal force by utilizing the conical filter element rotating at a high speed, so that the dirt is separated from the conical filter element, the normal filtering efficiency of the conical filter element is ensured, and in addition, the device can centrally store the dirt separated from the conical filter element in the elastic air bag; in addition, kinetic energy for realizing the functions comes from the same driving motor, so that the effective utilization rate of the kinetic energy of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification devices, and specifically to a centrifugal water purification device. Background Art

[0002] Before purifying sewage, it is necessary to filter out impurities contained in the sewage, such as hair, cotton wool, sand grains, plastic sheets, animal dander, etc., to prevent these small particle impurities from entering the sewage purification system and causing equipment blockage. Currently, sewage filtration usually uses a traditional fine grid combined with a filter screen for interception. However, as sewage filtration continues, dirt accumulates continuously until the filter screen is blocked, resulting in the suspension of sewage treatment, increasing maintenance costs and expenses. This not only increases production costs but also reduces work efficiency, and even directly affects the sewage treatment effect.

[0003] Therefore, the Chinese patent with the publication number "CN207786099U" discloses "a municipal sewage centrifugal anti-blocking filtration device". Its main structure includes a sewage filtration box body, a centrifugal cylinder, a purified water discharge pipe, and a rotating shaft. The bottom end of the sewage filtration box body is equipped with feet, the upper side of the sewage filtration box body is connected to a sewage input pipe, and the bottom side is connected to a sewage discharge pipe. A centrifugal cylinder and a filter element are installed inside the sewage filtration box body. Both the centrifugal cylinder and the filter element are installed on the rotating shaft, and the top end of the rotating shaft is connected to a servo motor; the filter element is installed inside the centrifugal cylinder, and the bottom end of the filter element is connected to the purified water discharge pipe; a wire woven mesh is wound around the side wall of the centrifugal cylinder, and the filter element is composed of a filter screen, a filter element support, a filter material layer, an activated carbon layer, and a filter membrane; by driving the rotation speeds of the centrifugal cylinder and the filter element, the dirt attached to them is thrown out, effectively solving the problem that the centrifugal cylinder and the filter element are fixedly installed in the equipment and are easily blocked by dirt, and reducing the maintenance cost.

[0004] When the above-mentioned municipal sewage centrifugal anti-blocking filtration device performs the centrifugal filtration process, by driving the rotation speeds of the centrifugal cylinder and the filter element, the dirt attached to them is thrown out. However, the thrown-out dirt is still inside the filtration area and cannot be discharged outward in time, which will cause the equipment to need to be opened and the dirt to be manually removed after working for a short period of time, resulting in a low single working duration of the equipment. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a centrifugal water purification device. By using a conical filter element rotating at a high speed, centrifugal force is generated on the dirt attached to its outer surface, so that the dirt detaches from the conical filter element to ensure the normal filtration efficiency of the conical filter element. In addition, the device can concentrate the dirt that has detached from the conical filter element inside an elastic airbag, thereby reducing the density of dirt in the filtration area, and further increasing the single working duration of the equipment. In addition, the kinetic energy for realizing the above functions comes from the same driving motor, thereby improving the effective utilization rate of the motor kinetic energy and solving the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A centrifugal water purification device, comprising a vertical filter cylinder with support legs installed at the bottom, a vertical filter cavity arranged inside the vertical filter cylinder, a sewage injection channel arranged on one side of the vertical filter cylinder for injecting sewage into the vertical filter cavity, a dirt discharge channel arranged at the bottom end of the vertical filter cylinder, a dirt discharge hole arranged inside the dirt discharge channel and used for discharging the dirt end, and a shaft body installation hole and a purified water discharge channel arranged at the top end of the vertical filter cylinder. It further includes a filter medium driving mechanism, which internally has a longitudinal rotating shaft whose bottom area structure is located inside the vertical filter cavity and can rotate, a conical filter element that divides the vertical filter cavity into a lower layer area and an upper layer area and can rotate with the longitudinal rotating shaft, and a longitudinal screw located inside the lower layer area of the vertical filter cavity and the dirt discharge hole and can rotate with the longitudinal rotating shaft; and an elastic expansion type dirt accumulation mechanism, which internally has an outer storage shell fixedly installed at the bottom of the dirt discharge channel and in a hollow state inside, and an elastic airbag located inside the outer storage shell and whose top end can introduce the dirt discharged downward from the dirt discharge hole and generate an outward expansion phenomenon.

[0007] Preferably, the filter medium driving mechanism includes a longitudinal rotating shaft inserted into the vertical filter cavity through the shaft body installation hole. The shaft of the longitudinal rotating shaft inside the shaft body installation hole is installed in the shaft body installation hole through a bearing. A bottom embedding disc is fixedly installed at the bottom end of the longitudinal rotating shaft. A ring embedding body is fixedly installed around the shaft of the longitudinal rotating shaft inside the vertical filter cavity through a central mounting frame. A conical filter element is embedded between the ring embedding body and the bottom embedding disc. The outer circumferential surface of the ring embedding body is installed at the circumferential inner wall of the vertical filter cavity through a bearing and a sealing ring. A longitudinal screw penetrating the dirt discharge hole is fixedly installed at the bottom end of the longitudinal rotating shaft. A spiral blade structure is arranged on the rod body of the longitudinal screw.

[0008] Preferably, the caliber of the bottom of the conical filter element is smaller than that of the top, forming an inverted cone-shaped structure.

[0009] Preferably, a tip drainage structure that protrudes downward and guides the dirt to smoothly transition downward is arranged at the bottom end of the longitudinal screw.

[0010] Preferably, the elastic expansion type dirt accumulation mechanism includes an outer storage housing, a component buffer cavity is arranged inside the outer storage housing, a dirt inlet channel integrally formed with the outer storage housing is arranged at the center of the top of the outer storage housing, a top fixing plate structure integrally formed with the dirt inlet channel and fixedly installed at the bottom end of the dirt discharge channel is arranged at the top end of the dirt inlet channel, a dirt conveying hole with its top end communicating with the dirt discharge hole and its bottom end is arranged at the center of the dirt inlet channel, and an elastic airbag is embedded in the bottom port of the dirt inlet channel located inside the component buffer cavity.

[0011] Preferably, the elastic airbag is a cylindrical structure made of a rubber material with elastic extension function.

[0012] Preferably, it further includes a soft start type driving mechanism, which internally includes a driving motor located directly above the longitudinal rotating shaft, an upper rotating disk that can rotate with the rotor of the driving motor, a lower rotating disk that can drive the longitudinal rotating shaft to rotate, and three crawler bodies installed between the upper rotating disk and the lower rotating disk and capable of achieving a soft start effect.

[0013] Preferably, the soft start type driving mechanism includes a top mounting substrate and a lower rotating disk fixedly installed at the top of the vertical filter cylinder through a longitudinal support rod, a driving motor is fixedly installed on the upper surface of the top mounting substrate through a motor fixing housing, an upper rotating disk is fixedly installed at the bottom end of the rotor of the driving motor, an inner concave structure is arranged at the bottom end of the lower rotating disk and is used for fixedly installing a shaft fixing groove of the longitudinal rotating shaft, and three crawler bodies are embedded on the outer circumferential surfaces of the upper rotating disk and the lower rotating disk in an annular array layout.

[0014] Preferably, the longitudinal distance between the upper rotating disk and the lower rotating disk is less than the length of the crawler body and greater than half of the length of the crawler body.

[0015] Preferably, after the driving motor is started, the conveying direction formed by the rotation of the spiral blade structure is downward.

[0016] Compared with the prior art, the present invention provides a centrifugal water purification device, which has the following beneficial effects:

[0017] The high-speed rotating conical filter element makes the dirt attached to its outer surface generate centrifugal force, so that the dirt is separated from the conical filter element to ensure the normal filtration efficiency of the conical filter element. In addition, the device can concentrate the dirt separated from the conical filter element inside the elastic airbag, thereby reducing the density of dirt in the filtration area, and further increasing the single working duration of the equipment. In addition, the kinetic energy for realizing the above functions comes from the same driving motor, thereby improving the effective utilization rate of the motor kinetic energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the present invention;

[0019] Figure 2 is a three-dimensional sectional view of the present invention;

[0020] Figure 3 is a three-dimensional view of the filter medium driving mechanism in the present invention;

[0021] Figure 4 is a three-dimensional sectional view of the filter medium driving mechanism in the present invention;

[0022] Figure 5 is a three-dimensional sectional view of the elastic expansion type dirt accumulation mechanism in the present invention;

[0023] Figure 6 is a three-dimensional sectional view of the soft start type driving mechanism in the present invention.

[0024] Wherein: 1. Vertical filter cylinder; 2. Support leg; 3. Vertical filter cavity; 4. Sewage injection channel; 5. Dirt discharge channel; 6. Dirt discharge hole; 7. Shaft body installation hole; 8. Clean water discharge channel; 9. Filter medium driving mechanism; 91. Longitudinal rotating shaft; 92. Bottom embedding disc; 93. Central installation frame; 94. Ring embedding body; 95. Conical filter element; 96. Longitudinal screw; 97. Spiral blade structure; 98. Tip drainage structure; 10. Elastic expansion type dirt accumulation mechanism; 101. Dirt entry channel; 102. Top fixing plate structure; 103. Outer storage shell; 104. Component buffer cavity; 105. Elastic airbag; 106. Dirt conveying hole; 11. Soft start type driving mechanism; 111. Top installation base plate; 112. Longitudinal support rod; 113. Motor fixing outer shell; 114. Driving motor; 115. Rotor; 116. Upper rotating disc; 117. Lower rotating disc; 118. Shaft body fixing groove; 119. Track body. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figure 1 and Figure 2, A centrifugal water purification device, including a vertical filter cylinder 1 with support legs 2 installed at the bottom, a vertical filter cavity 3 arranged inside the vertical filter cylinder 1, a sewage injection channel 4 arranged on one side of the vertical filter cylinder 1 for injecting sewage into the vertical filter cavity 3, a dirt discharge channel 5 arranged at the bottom end of the vertical filter cylinder 1, a dirt discharge hole 6 arranged inside the dirt discharge channel 5 and used for discharging the dirt end, and a shaft body installation hole 7 and a purified water discharge channel 8 arranged at the top end of the vertical filter cylinder 1. The sewage discharge pipe is docked with the port of the sewage injection channel 4, and then each purified water discharge channel 8 is docked with the pipe for collecting the purified liquid. The sewage moves from bottom to top and will be filtered by the conical filter element 95, and then the purified liquid flows out through the purified water discharge channel 8.

[0027] In order to achieve centrifugal filtration of sewage and directional compression and transportation of dirt, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , it is necessary to set up a filter medium driving mechanism 9, which internally has a longitudinal rotating shaft 91 whose bottom area structure is located inside the vertical filter cavity 3 and can rotate, a conical filter element 95 that divides the vertical filter cavity 3 into a lower layer area and an upper layer area and can rotate with the longitudinal rotating shaft 91, and a longitudinal screw 96 that is located inside the lower layer area of the vertical filter cavity 3 and the dirt discharge hole 6 and can rotate with the longitudinal rotating shaft 91. When the longitudinal rotating shaft 91 rotates, it will drive the conical filter element 95 and the longitudinal screw 96 to rotate. When the conical filter element 95 rotates, the dirt attached to its outer circumferential surface will generate centrifugal force and thus be thrown away, ensuring the normal filtration efficiency of the conical filter element 95. At this time, the longitudinal screw 96 will drive the spiral blade structure 97 to rotate. When the spiral blade structure 97 rotates, it will cause the dirt around it to have a downward conveying effect, so that the dirt is compressed and moves downward to reduce the density of the dirt in the filtration area, thereby increasing the single working duration of the equipment.

[0028] Regarding the specific structure of the filter medium driving mechanism 9, please refer to Figure 3 and Figure 4, including a longitudinal rotating shaft 91 inserted into the vertical filtering cavity 3 through the shaft body mounting hole 7. The shaft body of the longitudinal rotating shaft 91 located inside the shaft body mounting hole 7 is mounted in the shaft body mounting hole 7 through bearings. A bottom embedding disc 92 is fixedly installed at the bottom end of the longitudinal rotating shaft 91. A ring embedding body 94 is fixedly installed around the shaft body of the longitudinal rotating shaft 91 located inside the vertical filtering cavity 3 through a central mounting frame 93. A conical filter element 95 is embedded between the ring embedding body 94 and the bottom embedding disc 92. The outer circumferential surface of the ring embedding body 94 is mounted at the circumferential inner wall of the vertical filtering cavity 3 through bearings and sealing rings. A longitudinal screw 96 penetrating the dirt discharge hole 6 is fixedly installed at the bottom end of the longitudinal rotating shaft 91. A spiral blade structure 97 is arranged on the rod body of the longitudinal screw 96. The caliber of the bottom of the conical filter element 95 is smaller than that of its top, forming an inverted cone-shaped structure. A tip drainage structure 98 that protrudes downward and guides the dirt to smoothly transition downward is arranged at the bottom end of the longitudinal screw 96.

[0029] In order to achieve the effect of squeezing and collecting dirt so that the sewage can be squeezed out, please refer to Figure 1 , Figure 2 and Figure 5 , it is necessary to set up an elastic expansion type dirt accumulation mechanism 10, which internally has an outer storage shell 103 fixedly installed at the bottom of the dirt discharge channel 5 and in a hollow state, and an elastic airbag 105 located inside the outer storage shell 103 and capable of guiding the dirt discharged downward from the dirt discharge hole 6 to its top and generating an outward expansion phenomenon at the top. When the dirt is conveyed into the elastic airbag 105 by the spiral blade structure 97, it will accumulate inside the elastic airbag 105. When the volume of the dirt is larger than the internal volume of the elastic airbag 105, it will cause the elastic airbag 105 to expand outward, thereby expanding the volume for the dirt. At this time, the elastic airbag 105 will also generate a squeezing effect on the accumulated dirt towards the center, thereby squeezing the sewage upward and re-entering the vertical filtering cavity 3, separating the solid debris and the liquid, and achieving the effect of squeezing and collecting dirt. After storing to a certain extent, remove the elastic expansion type dirt accumulation mechanism 10 and pour out the dirt.

[0030] Regarding the specific structure of the elastic expansion type dirt accumulation mechanism 10, please refer to Figure 5, including an external storage housing 103. Inside the external storage housing 103, there is a component buffer cavity 104. At the center of the top of the external storage housing 103, there is a dirt entry channel 101 integrated with it. At the top end of the dirt entry channel 101, there is a top fixing plate structure 102 integrated with it and fixedly installed at the bottom end of the dirt discharge channel 5. In the center of the dirt entry channel 101, there is a dirt transport hole 106 with its top end connected to the bottom end of the dirt discharge hole 6. At the bottom port of the dirt entry channel 101 located inside the component buffer cavity 104, an elastic airbag 105 is embedded. The elastic airbag 105 is a cylindrical structure made of a rubber material with elastic extension function.

[0031] To achieve a soft-start driving method, please refer to Figure 1 , Figure 2 and Figure 6 , it is necessary to set up a soft-start driving mechanism 11. Inside it, there is a driving motor 114 located directly above the longitudinal rotating shaft 91, an upper rotating disk 116 that can rotate with the rotor 115 of the driving motor 114, a lower rotating disk 117 that can drive the longitudinal rotating shaft 91 to rotate, and three crawler bodies 119 installed between the upper rotating disk 116 and the lower rotating disk 117 and capable of achieving a soft-start effect. When the driving motor 114 is started, the rotor 115 will drive the upper rotating disk 116 to rotate, and the three crawler bodies 119 will entangle with each other until the lower rotating disk 117 is driven to rotate. The lower rotating disk 117 will then drive the longitudinal rotating shaft 91 to rotate. The existence of the soft crawler 114 enables the device to bend adaptively when vibrating, thereby reducing the damage to the driving motor 114 caused by the device vibration.

[0032] Regarding the specific structure of the soft-start driving mechanism 11, please refer to Figure 6 , including a top mounting substrate 111 and a lower rotating disk 117 fixedly installed on the top of the vertical filter cylinder 1 through a longitudinal support rod 112. On the upper surface of the top mounting substrate 111, a driving motor 114 is fixedly installed through a motor fixing housing 113. At the bottom end of the rotor 115 of the driving motor 114, an upper rotating disk 116 is fixedly installed. At the bottom end of the lower rotating disk 117, there is an inward concave structure and a shaft fixing groove 118 for fixedly installing the longitudinal rotating shaft 91. Three crawler bodies 119 are embedded in the outer circumferential surfaces of the upper rotating disk 116 and the lower rotating disk 117 in a circular array layout. The longitudinal distance between the upper rotating disk 116 and the lower rotating disk 117 is less than the length of the crawler body 119 and greater than half of the length of the crawler body 119. After the driving motor 114 is started, the conveying direction formed by the rotation of the spiral blade structure 97 is downward.

[0033] In use, the sewage discharge pipe is docked with the 4-port of the sewage injection channel, and then each purified water discharge channel 8 is docked with the pipe for collecting the purified liquid. The sewage moves from bottom to top and will be filtered by the conical filter element 95. Then, the purified liquid flows out through the purified water discharge channel 8. When the drive motor 114 is started, the rotor 115 will drive the upper rotating disk 116 to rotate, and the three crawler bodies 119 will be wound around each other until the lower rotating disk 117 is driven to rotate. The lower rotating disk 117 will drive the longitudinal rotating shaft 91 to rotate. The rotation of the longitudinal rotating shaft 91 will drive the conical filter element 95 and the longitudinal screw 96 to rotate. When the conical filter element 95 rotates, the dirt attached to its outer circumferential surface will generate centrifugal force and thus be thrown off, ensuring the normal filtering efficiency of the conical filter element 95. At this time, the longitudinal screw 96 will drive the spiral blade structure 97 to rotate. When the spiral blade structure 97 rotates, it will cause the dirt around it to be conveyed downward, so that the dirt is compressed and moves downward. When the dirt is conveyed into the elastic airbag 105 by the spiral blade structure 97, it will accumulate inside the elastic airbag 105. When the volume of the dirt is greater than the internal volume of the elastic airbag 105, it will cause the elastic airbag 105 to expand outward, thereby expanding the volume for the dirt. At this time, the elastic airbag 105 will also exert a squeezing effect on the accumulated dirt toward the center, and then squeeze the sewage upward and into the vertical filtering cavity 3 again, separating the solid debris from the liquid and achieving the squeezing-type collection effect of the dirt. After storing to a certain extent, remove the elastic expansion type dirt accumulation mechanism 10 and pour out the dirt.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal water purification device, comprising a vertical filter cartridge (1) with a support leg (2) installed at the bottom, a vertical filter cavity (3) arranged inside the vertical filter cartridge (1), a sewage injection channel (4) arranged on one side of the vertical filter cartridge (1) and used to inject sewage into the vertical filter cavity (3), a sewage discharge channel (5) arranged at the bottom end of the vertical filter cartridge (1), a sewage discharge hole (6) arranged inside the sewage discharge channel (5) and used to discharge sewage, and an axial body installation hole (7) and a clean water discharge channel (8) arranged at the top end of the vertical filter cartridge (1), characterized in that: Also includes, A filter medium drive mechanism (9) is provided with a bottom region structure located inside the vertical filter cavity (3) and capable of rotating a longitudinal rotation shaft (91), a conical filter element (95) which divides the vertical filter cavity (3) into a lower region and an upper region and can rotate along with the longitudinal rotation shaft (91), and a longitudinal screw (96) located inside the lower region of the vertical filter cavity (3) and the dirt discharge hole (6) and capable of rotating along with the longitudinal rotation shaft (91); And an elastic expansion type dirt accumulation mechanism (10), which is provided with an outer storage shell (103) fixedly mounted at the bottom of a dirt discharge channel (5) and having a hollow interior, and an elastic air bag (105) located inside the outer storage shell (103) and having a top end capable of introducing dirt discharged downward from a dirt discharge hole (6) and causing an outward expansion phenomenon.

2. A centrifugal water purification device according to claim 1, characterized in that: The filter medium driving mechanism (9) comprises a longitudinal rotating shaft (91) inserted into the interior of the vertical filter cavity (3) through a shaft body mounting hole (7); the longitudinal rotating shaft (91) is mounted in the shaft body mounting hole (7) through a bearing at a shaft body located inside the shaft body mounting hole (7); a bottom embedded plate (92) is fixedly mounted at the bottom end of the longitudinal rotating shaft (91); and the longitudinal rotating shaft (91) is mounted on the periphery of the shaft body located inside the vertical filter cavity (3) through a central mounting frame. (93) is fixedly installed with an annular embedded body (94), a conical filter element (95) is embedded between the annular embedded body (94) and the bottom embedded disk (92), the outer circumferential surface of the annular embedded body (94) is installed on the circumferential inner wall of the vertical filter cavity (3) through a bearing and a sealing ring, and the bottom end of the longitudinal rotating shaft (91) is fixedly installed with a longitudinal screw (96) that passes through the dirt discharge hole (6), and the rod body of the longitudinal screw (96) is provided with a spiral blade structure (97).

3. A centrifugal water purification device according to claim 2, characterized in that: The bottom diameter of the conical filter element (95) is smaller than the top diameter thereof, forming an inverted conical structure.

4. A centrifugal water purification device according to claim 3, characterized in that: The bottom end of the longitudinal screw (96) is provided with a tip drainage structure (98) that protrudes downward and guides dirt to smoothly transition downward.

5. A centrifugal water purification device according to claim 4, characterized in that: The elastic expansion type dirt accumulation mechanism (10) comprises an outer storage shell (103), a component buffer cavity (104) is arranged inside the outer storage shell (103), a dirt inlet channel (101) which is an integral structure with the outer storage shell (103) is arranged at the top center of the outer storage shell (103), a top fixed plate structure (102) which is an integral structure with the outer storage shell (103) and fixedly mounted on the bottom end of the dirt discharge channel (5) is arranged at the top end of the dirt inlet channel (101), a dirt conveying hole (106) which is connected to the bottom end of the dirt discharge hole (6) is arranged at the center of the dirt inlet channel (101), and an elastic air bag (105) is embedded in the bottom port of the dirt inlet channel (101) which is located inside the component buffer cavity (104).

6. A centrifugal water purification device according to claim 5, characterized in that: The elastic airbag (105) is a cylindrical structure made of a rubber material with elastic extension function.

7. A centrifugal water purification device according to claim 6, characterized in that: The invention also comprises a soft-start drive mechanism (11), which is provided with a drive motor (114) located directly above the longitudinal rotating shaft (91), an upper rotating disk (116) capable of rotating along with a rotor (115) of the drive motor (114), a lower rotating disk (117) capable of driving the longitudinal rotating shaft (91) to rotate, and three crawler bodies (119) installed between the upper rotating disk (116) and the lower rotating disk (117) and capable of achieving a soft-start effect.

8. A centrifugal water purification device according to claim 7, characterized in that: The soft-start drive mechanism (11) comprises a top mounting base plate (111) and a lower rotating disc (117) fixedly mounted on the top of the vertical filter cartridge (1) via a longitudinal support rod (112); a driving motor (114) is fixedly mounted on the upper surface of the top mounting base plate (111) via a motor fixing housing (113); an upper rotating disc (116) is fixedly mounted on the bottom end of a rotor (115) of the driving motor (114); a shaft body fixing groove (118) having an inner concave structure and used for fixing and mounting a longitudinal rotating shaft (91) is provided at the bottom end of the lower rotating disc (117); and three crawler bodies (119) arranged in an annular array are embedded in the outer circumferential surfaces of the upper rotating disc (116) and the lower rotating disc (117).

9. A centrifugal water purification device according to claim 8, characterized in that: The longitudinal distance between the upper rotating disk (116) and the lower rotating disk (117) is less than the length of the crawler body (119) and greater than half the length of the crawler body (119).

10. A centrifugal water purification device according to claim 9, characterized in that: After the driving motor (114) is started, the conveying direction formed by the rotation of the spiral blade structure (97) is downward.

Images