CN215975355U

CN215975355U - Water purifier based on photocatalysis technology

Info

Publication number: CN215975355U
Application number: CN202121908146.8U
Authority: CN
Inventors: 张艳华; 江艺萱; 杨宏涛
Original assignee: Chongqing University of Arts and Sciences
Current assignee: Chongqing University of Arts and Sciences
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-03-08
Anticipated expiration: 2031-08-16

Abstract

The utility model provides a water body purification device based on a photocatalysis technology, which comprises a filter box (10) and a purification box (20), wherein a liquid inlet pipe (11), a connecting pipe (12), a filter screen (14) and a cleaning assembly (13) are arranged in the filter box (10); the purification box (20) is provided with a driving component (21) and a photocatalysis component (22), the driving component (21) comprises a motor (211), a rotating rod (212), a driving gear (213), a driven gear (214) and stirring blades (215), and the photocatalysis component (22) comprises a rotating plate (221), a gear ring (222) and an ultraviolet lamp component (223). The device filters the sewage and then carries out photocatalytic purification, thereby improving the purification efficiency and avoiding the inactivation of the sewage caused by the mixing of the photocatalyst and the sludge; meanwhile, the device realizes effective mixing of the photocatalyst and the sewage and uniform irradiation of light, and further improves the catalytic purification efficiency.

Description

Water purifier based on photocatalysis technology

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a water body purification device based on a photocatalysis technology.

Background

With the development of economy, the improvement of living standard and the advance of urbanization, the problem of water pollution is becoming more serious and becomes one of the most concerned problems of people at present. Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people.

The existing water body purification (namely sewage treatment) link is usually accompanied with a photocatalysis technology, and the photocatalysis technology is used for realizing the functions of catalytic purification and disinfection and sterilization; the photocatalysis is that under the condition of certain wavelength illumination, the semiconductor material generates the separation of photon-generated carriers, then photon-generated electrons and holes are combined with ions or molecules to generate active free radicals with oxidability or reducibility, the active free radicals can degrade organic macromolecules into carbon dioxide or other micromolecular organic matters and water, and the semiconductor material, namely the photocatalyst, does not change in the reaction process.

The existing photocatalytic water purification device consumes a long time and has low purification work efficiency in the catalytic purification process; meanwhile, the water purification treatment effect is poor, and the catalyst is easy to lose activity due to dirt accumulated on the surface of the catalyst, so that the purification effect is poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a water body purification device based on a photocatalysis technology, which is used for filtering sewage and then carrying out photocatalysis purification, so that the purification efficiency is improved, and the inactivation caused by mixing of a photocatalyst and a large amount of sludge is avoided; meanwhile, the device realizes effective mixing of the photocatalyst and the sewage and uniform irradiation of light in the catalysis process, further improves the catalysis effect of the photocatalyst and improves the purification efficiency.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a water purifier based on photocatalysis technique which characterized in that: the cleaning device comprises a filter box and a purification box, wherein a liquid inlet pipe is arranged at one side of the filter box, the bottom of the other side of the filter box is communicated with the top of the purification box through a connecting pipe, and a filter screen and a cleaning assembly are arranged at the position, located at the position of the connecting pipe, of the filter box;

the device comprises a purification box, a light catalytic component, a light source control module, a control module and a control module, wherein the purification box is provided with the drive component and the light catalytic component, the drive component comprises a motor, a rotating rod, a drive gear, a driven gear and stirring blades, the motor is fixedly arranged on the top surface of the purification box through an L-shaped support, the output end of the motor is fixedly connected with the rotating rod, and the rotating rod penetrates through the top surface of the purification box and is rotatably connected with the bottom surface in the purification box; a driving gear is fixedly sleeved on the outer wall of the rotating rod and positioned at the top of the purifying box, driven gears are symmetrically arranged on two sides of the driving gear, and the driven gears are meshed with the driving gear; the outer wall of the rotating rod, which is positioned in the inner cavity of the purifying box, is fixedly sleeved with a plurality of stirring blades, and the stirring blades are spirally distributed on the outer wall of the rotating rod; the photocatalytic component comprises a rotating plate, a gear ring and an ultraviolet lamp component, the rotating plate is sleeved on the outer wall of the rotating rod through a rotating bearing and is positioned on the upper side of the driving gear, the gear ring is fixedly connected with the bottom surface of the rotating plate through a plurality of connecting blocks, and the inner teeth of the gear ring are meshed with the driven gear; a plurality of placing holes are correspondingly formed in the rotating plate and the gear ring and are uniformly distributed around the central axis of the rotating rod, and an annular through groove is formed in the top of the purifying box corresponding to the placing holes; one end of the ultraviolet lamp component is arranged on the top surface of the rotating plate, and the other end of the ultraviolet lamp component penetrates through the placing hole and the annular through groove in sequence and is located in the inner cavity of the purifying box.

Further optimization is carried out, the inside guide plate that sets up of rose box just the guide plate is located the one end of feed liquor pipe and is the higher one side relatively.

The cleaning assembly comprises a rotary table, a threaded rod and a cleaning sliding block, wherein one end of the threaded rod is rotatably connected with the inner wall of the filter box, and the other end of the threaded rod penetrates through the filter box and is fixedly connected with the rotary table; the cleaning sliding block is sleeved on the threaded rod, the bottom surface of the cleaning sliding block is in sliding contact with the bottom surface of the filter box, and the side surface of the cleaning sliding block, which is close to one side of the filter screen, is in sliding contact with the side surface of the filter box.

Preferably, the bottom surface of the cleaning sliding block is provided with a first scraper, and the side surface of the cleaning sliding block, which is close to one side of the filter screen, is provided with a cleaning brush.

Further optimization is carried out, a drain pipe is arranged on the bottom surface of the filter box and corresponds to the cleaning slide block, the drain pipe is communicated with a filter barrel, and the bottom of the filter barrel is communicated with a liquid inlet pipe through an intermediate pipeline; the blow-off pipe is provided with an electromagnetic valve for controlling the conduction of the blow-off pipe.

Further preferably, the driven gear is arranged on the top surface of the purifying box through a rotating shaft.

Preferably, the rotating rod is rotatably connected with the purifying box through a first sealing bearing.

Further optimization, a plurality of micropores are uniformly formed in the stirring blade.

The ultraviolet lamp component comprises a lamp tube sleeve and an ultraviolet lamp belt, the lamp tube sleeve comprises an annular positioning disc and a tube sleeve body, the annular positioning disc is arranged at the upper end of the tube sleeve body, a plurality of positioning pins are uniformly arranged on the bottom surface of the annular positioning disc and around the central axis of the tube sleeve body, positioning holes are formed in the top surface of the rotating plate corresponding to the positioning pins, and the positioning and fixing of the ultraviolet lamp component on the rotating plate are realized by clamping the positioning pins into the positioning holes; the ultraviolet lamp belt is fixedly arranged in the pipe sleeve body.

Further optimization is carried out, a second sealing bearing is fixedly arranged on the upper side and the lower side of the inner wall of the purifying box respectively, the central axis of the second sealing bearing is collinear with the inner axis of the purifying box, the second sealing bearing is far away from one end of the inner wall of the purifying box and corresponds to the placing hole and is provided with a U-shaped block, and the opening of the U-shaped block corresponds to the lamp tube sleeve and a second scraper is arranged between the upper U-shaped block and the lower U-shaped block.

Further optimized, an aeration device is arranged at the bottom of the purification box and used for supplementing air.

Further optimization is carried out, the purifying box is far away from the top end of the side wall of one side of the connecting pipe is provided with an inlet pipe, the bottom end of the side wall of one side of the connecting pipe is provided with an outlet pipe, and the connecting pipe, the inlet pipe and the outlet pipe are all provided with an electromagnetic valve for controlling the on-off of the connecting pipe.

The utility model has the following technical effects:

the purification device filters large-particle silt in the sewage through the filter box and then introduces the filtered large-particle silt into the purification box for photocatalytic purification, so that the problem that the catalyst is blocked by the silt in the photocatalytic purification process to cause catalyst inactivation or low catalytic efficiency is solved; the cleaning of the filter screen is realized through the arrangement of the cleaning assembly, and the problem of low water purification efficiency caused by the blockage of the filter screen is avoided. The device realizes uniform mixing of sewage and the catalyst through the matching of the motor, the rotating rod and the stirring blades, thereby improving the catalytic efficiency and avoiding the problem of catalyst agglomeration; through the cooperation of drive gear, driven gear, ring gear, rotor plate and ultraviolet lamp component, when realizing the dwang stirring, the rotation of illumination position to guarantee irradiant homogeneity, improve the catalytic efficiency of catalyst.

Drawings

Fig. 1 is a schematic view of the overall structure of a water purification device in the embodiment of the utility model.

Fig. 2 is an enlarged view of a portion of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

10, a filter box; 101. a baffle; 102. a blow-off pipe; 103. a filter vat; 104. an intermediate pipeline; 11. a liquid inlet pipe; 12. a connecting pipe; 13. a sweeping assembly; 131. a turntable; 132. a threaded rod; 133. cleaning the sliding block; 14. a filter screen; 20. a purification box; 201. a feed pipe; 202. a water outlet pipe; 203. a second sealed bearing; 2031. a U-shaped block; 2032. a second squeegee; 204. an annular through groove; 21. a drive assembly; 210. an "L" shaped bracket; 211. a motor; 212. rotating the rod; 2120. a first sealed bearing; 213. a drive gear; 214. a driven gear; 2140. a rotating shaft; 215. agitating the blades; 2150. micropores; 22. a photocatalytic component; 221. a rotating plate; 2210. positioning holes; 2211. a rotating bearing; 2212. connecting blocks; 2213. placing holes; 222. a gear ring; 223. an ultraviolet lamp member; 2231. a lamp tube sleeve; 2232. an ultraviolet lamp strip; 22311. an annular positioning disk; 22312. a pipe sleeve body; 22313. positioning pins; 23. an aeration device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that: the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; the terms "mounted," "disposed," "connected," "secured," and "screwed" should be interpreted broadly (e.g., as either a fixed connection or a releasable connection, or as a single unit that may be mechanically or electrically connected, directly or indirectly through intervening media, or as a combination of two elements in which there is communication or interaction between two elements); the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top side," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the utility model and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated.

As shown in figures 1-3, a water purifier based on photocatalysis technology which characterized in that: the device comprises a filter box 10 and a purification box 20, wherein a liquid inlet pipe 11 is arranged on one side of the filter box 10, the bottom of the other side of the filter box is communicated with the top of the purification box 20 through a connecting pipe 12, and a filter screen 14 and a cleaning assembly 13 are arranged at the position, located at the opening of the connecting pipe 12, of the filter box 10; the filter box 10 is provided with a guide plate 101 inside, and the guide plate 101 is located at one end of the liquid inlet pipe 11, which is a relatively high side. The sweeping assembly 13 comprises a rotary disc 131, a threaded rod 132 and a cleaning slide block 133, wherein one end of the threaded rod 132 is rotatably connected with the inner wall of the filter box 10, and the other end of the threaded rod 132 penetrates through the filter box 10 and is fixedly connected with the rotary disc 131; the cleaning slide block 133 is sleeved on the threaded rod 132, the bottom surface of the cleaning slide block 133 is in sliding contact with the bottom surface of the filter box 10, and the side surface close to one side of the filter screen 14 is in sliding contact with the side surface of the filter box 10; the bottom surface of the cleaning slider 133 is provided with a first scraper, and the side surface of the cleaning slider 133 close to the filter screen is provided with a cleaning brush (the first scraper and the cleaning brush are both arranged by conventional design in the field, and are not specifically discussed in the embodiments of the present application). The bottom surface of the filter box 10 is provided with a sewage discharge pipe 102 corresponding to the cleaning slide block 133, the sewage discharge pipe 102 is communicated with a filter barrel 103, and the bottom of the filter barrel 103 is communicated with the liquid inlet pipe 11 through a middle pipeline 104; the blow-off pipe 102 is provided with an electromagnetic valve for controlling the conduction of the blow-off pipe.

The purification box 20 is provided with a driving assembly 21 and a photocatalytic assembly 22, the driving assembly 21 comprises a motor 211, a rotating rod 212, a driving gear 213, a driven gear 214 and a stirring blade 215, the motor 211 is fixedly arranged on the top surface of the purification box 20 through an L-shaped bracket 210, the output end of the motor 211 is fixedly connected with the rotating rod 212, and the rotating rod 212 penetrates through the top surface of the purification box 20 and is rotatably connected with the bottom surface inside the purification box 20 through a first sealing bearing 2120; a driving gear 213 is fixedly sleeved on the outer wall of the rotating rod 212 and positioned at the top of the purification box 20, driven gears 214 are symmetrically arranged at two sides of the driving gear 213, the driven gears 214 are meshed with the driving gear 213, and the driven gear 201 is arranged on the top surface of the purification box 20 through a rotating shaft 2140; the outer wall of the rotating rod 212 positioned in the inner cavity of the purification box 20 is fixedly sleeved with a plurality of stirring blades 215, and the stirring blades 215 are spirally distributed on the outer wall of the rotating rod 212; the agitating blade 215 is uniformly provided with a plurality of micro-holes 2150 (shown in fig. 1). The photocatalytic component 22 comprises a rotating plate 221, a gear ring 222 and an ultraviolet lamp component 223, wherein the rotating plate 221 is sleeved on the outer wall of the rotating rod 212 through a rotating bearing 2211 and is positioned on the upper side of the driving gear 213, the gear ring 222 is fixedly connected with the bottom surface of the rotating plate 221 through a plurality of connecting blocks 2212, and the inner teeth of the gear ring 222 are meshed with the driven gear 214; a plurality of placing holes 2213 are correspondingly arranged on the rotating plate 221 and the gear ring 222, the placing holes 2213 are uniformly distributed around the central axis of the rotating rod 212, and an annular through groove 204 is arranged at the top of the purifying box 20 corresponding to the placing holes 2213; one end of the ultraviolet lamp member 223 is disposed on the top surface of the rotating plate 221, and the other end thereof sequentially penetrates through the placing hole 2213 and the annular through groove 204 and is located in the inner cavity of the purification box 20.

The ultraviolet lamp component 223 comprises a lamp sleeve 2231 and an ultraviolet lamp strip 2232, the lamp sleeve 2231 comprises an annular positioning disk 22311 and a sleeve body 22312, the annular positioning disk 22311 is arranged at the upper end of the sleeve body 22312, a plurality of positioning pins 22313 are uniformly arranged on the bottom surface of the annular positioning disk 22311 and around the central axis of the sleeve body 22312, positioning holes 2210 are arranged on the top surface of the rotating plate 221 corresponding to the positioning pins 22313, and the positioning pins 22313 are clamped into the positioning holes 2210 to position and fix the ultraviolet lamp component 223 on the rotating plate 221; the ultraviolet lamp strip 2232 is fixedly arranged in the pipe sleeve body 22312.

The upper side and the lower side of the inner wall of the purification box 20 are respectively fixedly provided with a second sealing bearing 203, the central axis of the second sealing bearing 203 is collinear with the central axis of the purification box 20, one end of the second sealing bearing 203 far away from the inner wall of the purification box 20 is provided with a U-shaped block 2031 corresponding to the placing hole 2213, and the opening of the U-shaped block 2031 corresponds to the lamp tube sleeve 2231 and a second scraper 2032 is arranged between the upper U-shaped block 2031 and the lower U-shaped block 2031.

The bottom of the purification box 20 is provided with an aeration device 23 for supplementing air.

The top end of the side wall of the purification box 20 far from the connecting pipe 12 is provided with a feeding pipe 201, the bottom end is provided with a discharging pipe 202, and the connecting pipe 12, the feeding pipe 201 and the discharging pipe 202 are all provided with an electromagnetic valve for controlling the on-off of the electromagnetic valve

The working principle is as follows:

the initial state of the apparatus is installed as shown in fig. 1. When the device is used for treating sewage, firstly, the electromagnetic valves at the positions of the connecting pipe 12 and the feeding pipe 201 are opened, the electromagnetic valves at the positions of the sewage discharge pipe 102 and the water outlet pipe 202 are closed, and sewage is respectively introduced into the liquid inlet pipe 11 and a catalyst is introduced into the feeding pipe 201; the sewage enters the purifying box 20 after being filtered by the filter screen 14; at the same time, when the motor 211 is started, the motor 211 drives the rotating rod 212 to rotate, thereby driving the driving gear 213 and the stirring blade 215 to rotate: the stirring blades 215 rotate to realize uniform mixing between the sewage and the catalyst, catalyst agglomeration is avoided through the disturbance effect of the micropores 2150 in the rotation process, and meanwhile, the micropores 2150 can also realize full contact between air supplemented by the aeration device 23 and the catalyst and the sewage, so that the catalysis efficiency is improved; the driving gear 213 rotates to drive the gear ring 222 to rotate through the driven gear 214, so that the ultraviolet lamp component 223 is driven to rotate in the sewage through the rotating plate 221, irradiation of all directions of the sewage is achieved, the uniformity of illumination is guaranteed, and the photocatalytic efficiency is further guaranteed. In the sewage treatment process, the rotating disc 131 is manually or electrically rotated to drive the threaded rod 132 to rotate, and the threaded rod 132 is in threaded connection with the cleaning slider 133, so that the threaded rod 132 rotates to drive the cleaning slider 133 to move up and down in the direction shown in fig. 3, the filter screen 14 is cleaned, and the influence on the treatment efficiency caused by the blockage of the filter screen 14 in the sewage treatment process is avoided. When the filter residue at the filter screen 14 is to be collected, the electromagnetic valve of the connecting pipe 12 is closed, the electromagnetic valve of the sewage discharge pipe 102 is opened, the rotating disc 131 is rotated, the cleaning slide block 13 sends the filter residue into the filter barrel 103 through the pipe orifice of the sewage discharge pipe 102, and the filtered sewage enters the filter box 10 again through the liquid inlet pipe 11 to be filtered and purified.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a water purifier based on photocatalysis technique which characterized in that: the cleaning device comprises a filter box (10) and a purification box (20), wherein a liquid inlet pipe (11) is arranged on one side of the filter box (10), the bottom of the other side of the filter box is communicated with the top of the purification box (20) through a connecting pipe (12), and a filter screen (14) and a cleaning assembly (13) are arranged at the position, located at the opening of the connecting pipe (12), of the filter box (10);

the photocatalytic purification device is characterized in that a driving assembly (21) and a photocatalytic assembly (22) are arranged at the purification box (20), the driving assembly (21) comprises a motor (211), a rotating rod (212), a driving gear (213), a driven gear (214) and stirring blades (215), the motor (211) is fixedly arranged on the top surface of the purification box (20) through an L-shaped support (210), the output end of the motor (211) is fixedly connected with the rotating rod (212), and the rotating rod (212) penetrates through the top surface of the purification box (20) and is rotatably connected with the bottom surface inside the purification box (20); the outer wall of the rotating rod (212) is positioned at the top of the purifying box (20) and fixedly sleeved with a driving gear (213), driven gears (214) are symmetrically arranged on two sides of the driving gear (213), and the driven gears (214) are meshed with the driving gear (213); the outer wall of the rotating rod (212) positioned in the inner cavity of the purification box (20) is fixedly sleeved with a plurality of stirring blades (215), and the stirring blades (215) are spirally distributed on the outer wall of the rotating rod (212); the photocatalytic component (22) comprises a rotating plate (221), a gear ring (222) and an ultraviolet lamp component (223), the rotating plate (221) is sleeved on the outer wall of the rotating rod (212) through a rotating bearing (2211) and is located on the upper side of the driving gear (213), the gear ring (222) is fixedly connected with the bottom surface of the rotating plate (221) through a plurality of connecting blocks (2212), and the inner teeth of the gear ring (222) are meshed with the driven gear (214); a plurality of placing holes (2213) are correspondingly formed in the rotating plate (221) and the gear ring (222), the placing holes (2213) are uniformly distributed around the central axis of the rotating rod (212), and an annular through groove (204) is formed in the top of the purifying box (20) corresponding to the placing holes (2213); one end of the ultraviolet lamp component (223) is arranged on the top surface of the rotating plate (221), and the other end of the ultraviolet lamp component penetrates through the placing hole (2213) and the annular through groove (204) in sequence and is positioned in the inner cavity of the purifying box (20).

2. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: the filter box (10) is internally provided with a guide plate (101), and one end of the guide plate (101) positioned at the liquid inlet pipe (11) is a relatively higher side.

3. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: the sweeping assembly (13) comprises a rotary disc (131), a threaded rod (132) and a cleaning sliding block (133), one end of the threaded rod (132) is rotatably connected with the inner wall of the filter box (10), and the other end of the threaded rod (132) penetrates through the filter box (10) and is fixedly connected with the rotary disc (131); the cleaning sliding block (133) is sleeved on the threaded rod (132), the bottom surface of the cleaning sliding block (133) is in sliding contact with the bottom surface of the filter box (10), and the side surface of the side close to the filter screen (14) is in sliding contact with the side surface of the filter box (10).

4. The water body purification device based on the photocatalysis technology as claimed in claim 3, wherein: a sewage discharge pipe (102) is arranged on the bottom surface of the filter box (10) and corresponds to the cleaning slide block (133), the sewage discharge pipe (102) is communicated with a filter barrel (103), and the bottom of the filter barrel (103) is communicated with the liquid inlet pipe (11) through a middle pipeline (104); an electromagnetic valve for controlling the conduction of the sewage draining pipe (102) is arranged on the sewage draining pipe.

5. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: the driven gear (214) is arranged on the top surface of the purification box (20) through a rotating shaft (2140).

6. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: the ultraviolet lamp component (223) comprises a lamp tube sleeve (2231) and an ultraviolet lamp strip (2232), the lamp tube sleeve (2231) comprises an annular positioning disc (22311) and a tube sleeve body (22312), the annular positioning disc (22311) is arranged at the upper end of the tube sleeve body (22312), a plurality of positioning pins (22313) are uniformly arranged on the bottom surface of the annular positioning disc (22311) and around the central axis of the tube sleeve body (22312), and positioning holes (2210) are arranged on the top surface of the rotating plate (221) corresponding to the positioning pins (22313); the ultraviolet lamp strip (2232) is fixedly arranged in the pipe sleeve body (22312).

7. The water body purification device based on the photocatalysis technology as claimed in claim 6, wherein: the upper side and the lower side of the inner wall of the purification box (20) are respectively fixedly provided with a second sealing bearing (203), the central axis of the second sealing bearing (203) is collinear with the central axis of the purification box (20), one end of the inner wall of the purification box (20) is far away from the second sealing bearing (203) and corresponds to the placement hole (2213) to be provided with a U-shaped block (2031), and the opening of the U-shaped block (2031) corresponds to the lamp tube sleeve (2231) and a second scraper (2032) is arranged between the upper U-shaped block (2031) and the lower U-shaped block (2031).

8. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: an aeration device (23) is arranged at the bottom of the purification box (20).

9. The water body purification device based on the photocatalysis technology as claimed in claim 1, wherein: keep away from purifying box (20) connecting pipe (12) one side lateral wall top sets up an inlet pipe (201), the bottom sets up an outlet pipe (202), just all set up the solenoid valve of its break-make of control on connecting pipe (12), inlet pipe (201), outlet pipe (202).