Sewage dephosphorization device convenient to maintain

Abstract

The utility model discloses a sewage dephosphorization device convenient to maintain, which belongs to the technical field of sewage treatment and comprises a box body, and a window component convenient to open and convenient for a user to maintain is mounted at the upper end of the box body; the window assembly convenient to open comprises a maintenance device and a lighting device, the box body is connected with the maintenance device and the lighting device, the maintenance device and the lighting device are connected, and a material conveying device for screening out large solid impurities in the device is installed on the box body. A dosing and discharging device convenient for cleaning and discharging solid impurities is mounted on the box body; a stirring device for stirring sewage in the device is mounted on the box body; the box body is provided with a water injection and drainage device used for adding chemicals and draining water and sewage. A supporting device used for fixing is installed on the box body. By means of the mode, the interior of the device is lighted while the interior of the sewage dephosphorization device is opened, maintenance personnel can conveniently see the interior of the device clearly, and therefore the interior of the device is conveniently maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage dephosphorization device which is easy to maintain. Background Art

[0002] In order to protect the ecological environment in rural areas, domestic sewage containing elements such as nitrogen and phosphorus must be treated before it can be discharged, so as to avoid untreated domestic sewage flowing into rivers and polluting water sources, causing eutrophication of water bodies, and thus damaging the ecological environment in rural areas.

[0003] For example, Chinese utility model patent CN218810757U discloses a sewage phosphorus removal device, in which a phosphorus removal agent inlet pipe is fixedly installed on the outer wall on the other side of the phosphorus removal mechanism body through a flange. The phosphorus removal agent inlet pipe is used to add phosphorus removal agent into the equipment so that the internal sewage reacts with the phosphorus removal agent to perform phosphorus removal precipitation operation.

[0004] However, it still has the following disadvantages: domestic sewage contains various solid substances that cannot be hydrolyzed. Directly discharging it into the sewage dephosphorization device may cause pipe blockage, thereby causing the machine to fail to operate.

[0005] Based on this, the utility model designs a sewage phosphorus removal device which is easy to maintain to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a sewage phosphorus removal device which is easy to maintain.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A sewage dephosphorization device that is easy to maintain, comprising a box body, wherein an easy-to-open window assembly for user maintenance is installed on the upper end of the box body;

[0009] The easy-to-open window assembly includes a maintenance device and a lighting device, the box body is connected to the maintenance device and the lighting device, and the maintenance device is connected to the lighting device;

[0010] The box body is equipped with a feeding device for screening out large solid impurities in the device;

[0011] The box body is equipped with a dosing and discharging device for cleaning and discharging solid impurities;

[0012] The box body is equipped with a stirring device for stirring the sewage in the device;

[0013] The box body is equipped with a water injection and drainage device for adding medicine and draining water and sewage;

[0014] A supporting device for fixing is installed on the box body.

[0015] Furthermore, the maintenance device includes a sliding window, a handle 1, a slide groove 1, a lock 1, a gear, a locking block, a slide groove 2, a locking groove and a circular groove. A slide groove 1 is provided on the right side of the front end of the box body, and the sliding window is slidably connected in the slide groove 1. A handle 1 is fixedly connected to the right side of the front end of the sliding window. A locking groove is provided on the upper side of the right end of the sliding window. A slide groove 2 and a circular groove are provided on the right side of the front end of the box body. The circular groove is communicated with the slide groove 2. A locking block is slidably connected in the slide groove 2. The lower end of the locking block passes through the slide groove 2 and is slidably connected to the locking groove. The locking block is connected to the lighting device, and a lock 1 is rotatably connected in the circular groove. A gear is fixedly connected to the outer wall of the lock 1, and the right end of the gear is meshed with a toothed plate fixed on the locking block.

[0016] Furthermore, the lighting device includes an insulating column, a limiting groove, a conductive block 1, a conductive block 2, a slot hole, a power supply, a small light bulb and a transparent protective shell. A slot hole is opened on the right side of the front end of the box, and the power supply is fixedly connected to the bottom of the slot hole. A limiting groove is opened on the left end of the slot hole, and the conductive block 2 is fixedly connected to the top of the limiting groove. The conductive block 1 is slidably connected in the limiting groove. The lower end of the conductive block is fixedly connected to the insulating column, the lower end of the insulating column is fixedly connected to the locking block, the right end of the conductive block 1 is fixedly connected to the power supply through a wire, the upper end of the conductive block 2 is fixedly connected to the small light bulb at equal intervals through a wire, and a transparent protective shell is fixedly connected to the upper side of the inner wall of the front end of the box at equal intervals, and the transparent protective shell is sleeved over the outside of the small light bulb.

[0017] Furthermore, the feeding device includes a rotating roller, a feeding crawler, a support plate, a brush, a second motor and a partition. The second motor is fixedly connected to the left side of the rear end of the box body, and the left and right sides of the inner walls at the front and rear ends of the box body are respectively rotatably connected with rotating rollers. The output end of the second motor passes through the box body and is fixedly connected to the rotating roller at the left end. The rotating rollers at the left and right ends are connected through the feeding crawler transmission. A partition is fixedly connected to the bottom of the box body, the left side of the upper end of the partition is fixedly connected to the support plate through a nut, and a brush is fixedly connected to the upper end of the support plate.

[0018] Furthermore, the dosing and discharging device includes a movable plate, a hinge, two handles, two locks and two slots. A second slot is opened on the left side of the lower end of the box body, and a hinge is fixedly connected to the left side of the lower end of the box body at equal intervals. The box body is rotatably connected to the movable plate through the hinge, and a second handle is fixedly connected to the left side of the upper end of the movable plate. A second lock is fixedly connected to the left side of the upper end of the movable plate, and the movable plate is fixedly connected to the box body through the second lock.

[0019] Furthermore, the stirring device includes a motor 1, a rotating shaft and stirring blades. The motor 1 is fixedly connected to the right side of the lower end of the box, the output end of the motor 1 passes through the box and is fixedly connected to the rotating shaft, and the output end of the rotating shaft is fixedly connected to the stirring blades at equal intervals.

[0020] Furthermore, the water injection and drainage device includes a fixed column, a water injection port, a drainage port, a sewage port, a dephosphorization agent feed pipe and a feed funnel. The water injection port is fixedly connected to the right side of the upper end of the box body, the drainage port is fixedly connected to the lower side of the right end of the box body, the sewage port is fixedly connected to the right side of the lower end of the box body, the fixed column is fixedly connected to the upper right end of the box body, the feed funnel is fixedly connected to the right end of the fixed column, and the lower end of the feed funnel is connected to the box body through the dephosphorization agent feed pipe.

[0021] Furthermore, the supporting device includes supporting columns and anti-skid pads. The lower end of the box body is fixedly connected to the supporting columns near the four corners, and the lower end of the supporting columns is fixedly connected to the anti-skid pads.

[0022] The utility model has the following technical effects:

[0023] When the locking block is moved downwards, the sliding window is locked, and the conductive block 1 is disengaged from the conductive block 2, so that the small light bulb is extinguished. The interior of the device is illuminated while the interior of the device is opened, so that the maintenance personnel can see the interior of the device clearly, thereby facilitating maintenance of the device.

[0024] 2. The utility model starts the motor 2 of the feeding device to drive the rotating roller at the left end to rotate, and the rotating roller drives the rotating roller at the right end to rotate through the feeding track, so that the large solid matter on the feeding track is transported to the left end cavity separated by the partition, and the large solid matter adsorbed on the feeding track is swept into the left end cavity separated by the partition by the brush fixed on the support plate at the upper end of the partition. By collecting the large solid particles separately, they are prevented from falling into the phosphorus removal cavity and causing the pipeline in the cavity to be blocked, thereby causing the device to fail to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The utility model is a three-dimensional sewage dephosphorization device which is easy to maintain. Figure 1 ;

[0027] Figure 2 This is a front view of a sewage dephosphorization device that is easy to maintain according to the utility model;

[0028] Figure 3 This is a left view of a sewage dephosphorization device that is easy to maintain according to the utility model;

[0029] Figure 4 The utility model is a three-dimensional sewage dephosphorization device which is easy to maintain. Figure 2 ;

[0030] Figure 5 For along Figure 3 AA direction cross-sectional view;

[0031] Figure 6 For along Figure 2 BB direction cross-sectional view;

[0032] Figure 7 For along Figure 3 CC direction cross-sectional view;

[0033] Figure 8 for Figure 6 Enlarged view of point D in the middle.

[0034] The numbers in the figure represent:

[0035] 1. Box; 2. Window assembly for easy opening; 21. Maintenance device; 22. Lighting device; 211. Sliding window; 212. Handle 1; 213. Slide 1; 214. Lock 1; 215. Gear; 216. Locking block; 217. Slide 2; 218. Locking groove; 219. Round groove; 221. Insulating column; 222. Limiting groove; 223. Conductive block 1; 224. Conductive block 2; 225. Slot; 226. Power supply; 227. Small light bulb; 228. Transparent protective shell; 3. Water injection and drainage device; 31. Fixed column; 32. Water inlet; 33. Drain outlet; 34. Sewage outlet; 35. Dephosphorization agent feed pipe; 36. Feed funnel; 4. Stirring device; 41. Motor 1; 42. Rotating shaft; 43. Stirring blades; 5. Dosing and discharging device; 51. Movable plate; 52. Hinge; 53. Handle 2; 54. Lock 2; 55. Slot 2; 6. Support device; 61. Support column; 62. Anti-skid pad; 7. Feeding device; 71. Rotating roller; 72. Feeding track; 73. Support plate; 74. Brush; 75. Motor 2; 76. Partition. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The utility model is further described below in conjunction with embodiments.

[0038] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0039] Example 1

[0040] Please refer to the instruction manual Figure 1-8 , a sewage dephosphorization device that is easy to maintain, comprising a housing 1;

[0041] The upper end of the box body 1 is provided with an easy-to-open window assembly 2 for user maintenance;

[0042] The easy-to-open window assembly 2 includes a maintenance device 21 and a lighting device 22, the box body 1 is connected to the maintenance device 21 and the lighting device 22, and the maintenance device 21 is connected to the lighting device 22;

[0043] The maintenance device 21 includes a sliding window 211, a handle 212, a slide 213, a key port 214, a gear 215, a locking block 216, a slide 217, a locking groove 218 and a circular groove 219. A slide 213 is provided on the right side of the front end of the box body 1, and the sliding window 211 is slidably connected in the slide 213. The handle 212 is fixedly connected to the right side of the front end of the sliding window 211. A locking groove 218 is provided on the upper side of the right end of the sliding window 211. The front end of the box body 1 A second slide groove 217 and a circular groove 219 are provided on the right side, the circular groove 219 is connected to the second slide groove 217, a locking block 216 is slidably connected in the second slide groove 217, the lower end of the locking block 216 passes through the second slide groove 217 and is slidably connected to the locking groove 218, the locking block 216 is connected to the lighting device 22, a key port 1 214 is rotatably connected in the circular groove 219, a gear 215 is fixedly connected to the outer wall of the key port 1 214, and the right end of the gear 215 is meshed and connected with the toothed plate fixed on the locking block 216;

[0044] The lighting device 22 includes an insulating column 221, a limiting groove 222, a conductive block 1 223, a conductive block 224, a slot 225, a power supply 226, a small light bulb 227 and a transparent protective shell 228. A slot 225 is provided on the right side of the front end of the box body 1, and a power supply 226 is fixedly connected to the bottom of the slot 225. A limiting groove 222 is provided on the left end of the slot 225, and a conductive block 224 is fixedly connected to the top of the limiting groove 222. A conductive block 1 223 is slidably connected in the limiting groove 222. The lower end of the conductive block 1 223 is fixedly connected to the insulating column 221, and the lower end of the insulating column 221 is fixedly connected to the locking block 216. The right end of the conductive block 1 223 is fixedly connected to the power supply 226 through a wire, and the upper end of the conductive block 224 is fixedly connected to the small light bulb 227 through a wire at an equal interval. A transparent protective shell 228 is fixedly connected to the upper side of the inner wall of the front end of the box body 1 at an equal interval, and the transparent protective shell 228 is sleeved on the outside of the small light bulb 227;

[0045] In the embodiment of the utility model, when the device starts to be maintained, the key port 1 214 in the circular groove 219 of the maintenance device 21 of the window assembly 2 that is easy to open is driven to rotate the gear 215, and the locking block 216 is driven to move up and disengage from the locking groove 218 provided on the sliding window 211 through the rotation of the gear 215. At this time, the sliding window 211 is no longer locked, and at the same time, the insulating column 221 and the conductive block 1 223 of the lighting device 22 are driven to move up along the limiting groove 222 through the upwardly moved locking block 216. When the upwardly moved conductive block 1 223 contacts the conductive block 224, the power supply 226 in the slot 225 provides power through the conductive block 224. 4 Light up the small bulb 227. The transparent protective shell 228 protects the small bulb 227. At this time, the sliding window 211 is driven to move along the slide slot 213 by pulling the handle 1 212 to open the device for maintenance. When the maintenance is completed, the sliding window 211 is driven to move by pulling the handle 1 212, and the locking block 216 is driven to move downward by turning the key hole 1 214 to lock the sliding window 211. At the same time, the conductive block 1 223 is separated from the conductive block 224 to turn off the small bulb 227. By opening the inside of the device and illuminating the inside of the device, it is convenient for maintenance personnel to see the inside of the device clearly, thereby facilitating maintenance of the inside of the device.

[0046] The box body 1 is provided with a feeding device 7 for screening out large solid impurities in the device.

[0047] The feeding device 7 includes a rotating roller 71, a feeding crawler 72, a support plate 73, a brush 74, a second motor 75 and a partition 76. The second motor 75 is fixedly connected to the left side of the rear end of the box body 1. The left and right sides of the inner walls at the front and rear ends of the box body 1 are rotatably connected to the rotating roller 71 respectively. The output end of the second motor 75 passes through the box body 1 and is fixedly connected to the rotating roller 71 at the left end. The rotating rollers 71 at the left and right ends are connected by the feeding crawler 72. The bottom of the box body 1 is fixedly connected to the partition 76. The left side of the upper end of the partition 76 is fixedly connected to the support plate 73 through a nut. The upper end of the support plate 73 is fixedly connected to the brush 74.

[0048] In the embodiment of the utility model, when the device starts to pour sewage into the device, the motor 2 75 of the feeding device 7 is started to drive the rotating roller 71 at the left end to rotate, and the rotating roller 71 drives the rotating roller 71 at the right end to rotate through the feeding crawler 72, so that the large solid matter on the feeding crawler 72 is transported to the left end cavity separated by the partition 76, and the large solid matter adsorbed on the feeding crawler 72 is swept into the left end cavity separated by the partition 76 by the brush 74 fixed on the support plate 73 at the upper end of the partition 76. The large solid particles are collected separately to prevent them from falling into the phosphorus removal cavity and causing blockage of the pipeline in the cavity, thereby causing the device to fail to operate.

[0049] The box body 1 is provided with a dosing and discharging device 5 for facilitating the cleaning and discharging of solid impurities;

[0050] The dosing and discharging device 5 includes a movable plate 51, a hinge 52, a second handle 53, a second key hole 54 and a second slot 55. The second slot 55 is provided on the left side of the lower end of the box body 1. The hinge 52 is fixedly connected to the left side of the lower end of the box body 1 at equal intervals. The box body 1 is rotatably connected to the movable plate 51 through the hinge 52. The second handle 53 is fixedly connected to the left side of the upper end of the movable plate 51. The second key hole 54 is fixedly connected to the left side of the upper end of the movable plate 51. The movable plate 51 is fixedly connected to the box body 1 through the second key hole 54.

[0051] In the embodiment of the utility model, when the solid waste in the device starts to be cleaned, the lock of the movable plate 51 is released by rotating the key port 2 54 of the dosing and discharging device 5, and the movable plate 51 is driven to rotate on the hinge 52 to open the slot 2 55 by pulling the handle 2 53. By opening the left end of the device, it is convenient to clean the solid impurities collected in the left end cavity.

[0052] The box body 1 is provided with a stirring device 4 for stirring the sewage in the device;

[0053] The stirring device 4 includes a motor 41, a rotating shaft 42 and stirring blades 43. The motor 41 is fixedly connected to the right side of the lower end of the box body 1. The output end of the motor 41 passes through the box body 1 and is fixedly connected to the rotating shaft 42. The output end of the rotating shaft 42 is fixedly connected to the stirring blades 43 at equal intervals.

[0054] In an embodiment of the utility model, when the device starts to mix the dephosphorization agent with the sewage, the motor 41 of the stirring device 4 is started to drive the rotating shaft 42 to rotate, and the rotation of the rotating shaft 42 drives the water injection and drainage device 3 to rotate to mix the sewage and the dephosphorization agent. By mixing the sewage and the dephosphorization agent, the dephosphorization agent can better adsorb pollutants such as phosphorus in the sewage, so that the water meets the discharge standards.

[0055] The box body 1 is equipped with a water injection and drainage device 3 for adding medicine and draining water;

[0056] The water injection and drainage device 3 includes a fixed column 31, a water injection port 32, a drainage port 33, a sewage outlet 34, a dephosphorization agent feed pipe 35 and a feed funnel 36. The water injection port 32 is fixedly connected to the right side of the upper end of the box body 1, the drainage port 33 is fixedly connected to the lower right side of the box body 1, the sewage outlet 34 is fixedly connected to the right side of the lower end of the box body 1, the fixed column 31 is fixedly connected to the upper right end of the box body 1, and the right end of the fixed column 31 is fixedly connected to the feed funnel 36. The lower end of the feed funnel 36 is connected to the box body 1 through the dephosphorization agent feed pipe 35;

[0057] In an embodiment of the utility model, when the device starts to add dephosphorization agent, the dephosphorization agent is added to the fixed feed funnel 36 on the fixed column 31 of the water injection and drainage device 3, and the dephosphorization agent in the feed funnel 36 is discharged from the device box 1 through the dephosphorization agent feed pipe 35, sewage is added to the device through the water injection port 32, the dephosphorized water is discharged from the device through the drainage port 33, and the precipitated impurities are discharged from the device through the sewage port 34. By adding chemicals to the device, pollutants in the sewage are removed, and at the same time, the sewage and precipitated impurities in the device are discharged separately to avoid the mixing of clean water and pollutants to cause secondary pollution.

[0058] The box body 1 is provided with a support device 6 for fixing;

[0059] The support device 6 includes a support column 61 and an anti-skid pad 62. The support columns 61 are fixedly connected to the four corners of the lower end of the box body 1, and the anti-skid pad 62 is fixedly connected to the lower end of the support column 61.

[0060] In the embodiment of the utility model, when the device begins to be installed, the device is supported by the support column 61 of the support device 6, and the friction between the support column 61 and the ground is increased by the anti-slip pad 62 to prevent the device from falling and being damaged when it is hit.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage dephosphorization device that is easy to maintain, comprising a housing (1), characterized in that: The upper end of the box body (1) is provided with an easy-to-open window assembly (2) for convenient user maintenance; The easy-to-open window assembly (2) comprises a maintenance device (21) and a lighting device (22); the box (1) is connected to the maintenance device (21) and the lighting device (22); and the maintenance device (21) is connected to the lighting device (22); The box body (1) is provided with a feeding device (7) for screening out large solid impurities in the device; The box body (1) is provided with a dosing and discharging device (5) for facilitating the cleaning and discharge of solid impurities; The box body (1) is equipped with a stirring device (4) for stirring the sewage in the device; The box body (1) is provided with a water injection and drainage device (3) for adding reagents and draining water and sewage; A supporting device (6) for fixing is installed on the box body (1).

2. The easy-to-maintain sewage phosphorus removal device according to claim 1 is characterized in that: The maintenance device (21) comprises a sliding window (211), a handle (212), a slide groove (213), a lock (214), a gear (215), a locking block (216), a slide groove (217), a locking groove (218) and a circular groove (219). The right side of the front end of the housing (1) is provided with a slide groove (213), the sliding window (211) is slidably connected in the slide groove (213), the right side of the front end of the sliding window (211) is fixedly connected with a handle (212), the upper side of the right end of the sliding window (211) is provided with a locking groove (218), and the housing (1) is provided with a locking groove (218). ) A second slide groove (217) and a circular groove (219) are provided on the right side of the front end, the circular groove (219) is connected to the second slide groove (217), a locking block (216) is slidably connected in the second slide groove (217), the lower end of the locking block (216) passes through the second slide groove (217) and is slidably connected to the locking groove (218), the locking block (216) is connected to the lighting device (22), a lock (214) is rotatably connected in the circular groove (219), a gear (215) is fixedly connected to the outer wall of the lock (214), and the right end of the gear (215) is meshedly connected with a toothed plate fixed on the locking block (216).

3. The easy-to-maintain sewage phosphorus removal device according to claim 2 is characterized in that: The lighting device (22) comprises an insulating column (221), a limiting groove (222), a conductive block 1 (223), a conductive block 2 (224), a slot (225), a power source (226), a small light bulb (227) and a transparent protective shell (228). The front right side of the box body (1) is provided with a slot (225), the bottom of the slot (225) is fixedly connected to the power source (226), the left end of the slot (225) is provided with a limiting groove (222), the top of the limiting groove (222) is fixedly connected to the conductive block 2 (224), and the limiting groove (225) is provided with a conductive block 2 (224). 22) is slidably connected with a conductive block 1 (223), the lower end of the conductive block 1 (223) is fixedly connected with an insulating column (221), the lower end of the insulating column (221) is fixedly connected with a locking block (216), the right end of the conductive block 1 (223) is fixedly connected with a power source (226) through a wire, the upper end of the conductive block 2 (224) is fixedly connected with a small light bulb (227) at an equal interval through a wire, and a transparent protective shell (228) is fixedly connected with the upper side of the inner wall of the front end of the box body (1) at an equal interval, and the transparent protective shell (228) is sleeved on the outside of the small light bulb (227).

4. The easy-to-maintain sewage phosphorus removal device according to claim 3 is characterized in that: The feeding device (7) comprises a rotating roller (71), a feeding crawler (72), a support plate (73), a brush (74), a second motor (75) and a partition plate (76). The second motor (75) is fixedly connected to the left side of the rear end of the box body (1). The left and right sides of the inner walls at the front and rear ends of the box body (1) are respectively rotatably connected to the rotating roller (71). The output end of the second motor (75) passes through the box body (1) and is fixedly connected to the rotating roller (71) at the left end. The rotating rollers (71) at the left end are transmission-connected via the feeding crawler (72). The bottom of the box body (1) is fixedly connected to the partition plate (76). The left side of the upper end of the partition plate (76) is fixedly connected to the support plate (73) via a nut. The upper end of the support plate (73) is fixedly connected to the brush (74).

5. The easy-to-maintain sewage phosphorus removal device according to claim 4, characterized in that: The dosing and discharging device (5) comprises a movable plate (51), a hinge (52), a second handle (53), a second lock (54) and a second notch (55); a second notch (55) is provided on the left side of the lower end of the box body (1); hinges (52) are fixedly connected to the left side of the lower end of the box body (1) at equal intervals; the box body (1) is rotatably connected to the movable plate (51) via the hinge (52); a second handle (53) is fixedly connected to the left side of the upper end of the movable plate (51); a second lock (54) is fixedly connected to the left side of the upper end of the movable plate (51); and the movable plate (51) is fixedly connected to the box body (1) via the second lock (54).

6. The easy-to-maintain sewage phosphorus removal device according to claim 5, characterized in that: The stirring device (4) comprises a motor (41), a rotating shaft (42) and stirring blades (43); the motor (41) is fixedly connected to the right side of the lower end of the box (1); the output end of the motor (41) passes through the box (1) and is fixedly connected to the rotating shaft (42); the output end of the rotating shaft (42) is fixedly connected to the stirring blades (43) at equal intervals.

7. The easy-to-maintain sewage phosphorus removal device according to claim 6, characterized in that: The water injection and drainage device (3) comprises a fixed column (31), a water injection port (32), a drainage port (33), a sewage discharge port (34), a dephosphorization agent feed pipe (35) and a feed funnel (36); the water injection port (32) is fixedly connected to the right side of the upper end of the box body (1); the drainage port (33) is fixedly connected to the lower side of the right end of the box body (1); the sewage discharge port (34) is fixedly connected to the right side of the lower end of the box body (1); the fixed column (31) is fixedly connected to the upper end of the right side of the box body (1); the feed funnel (36) is fixedly connected to the right end of the fixed column (31); and the lower end of the feed funnel (36) is connected to the box body (1) via the dephosphorization agent feed pipe (35).

8. The easy-to-maintain sewage phosphorus removal device according to claim 7, characterized in that: The support device (6) comprises a support column (61) and an anti-slip pad (62); the lower end of the box body (1) is fixedly connected to the support column (61) near the four corners, and the lower end of the support column (61) is fixedly connected to the anti-slip pad (62).

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