Dosing device for sewage treatment

Abstract

The utility model provides a dosing device for sewage treatment, which belongs to the technical field of sewage treatment equipment and comprises a maintenance platform arranged at the upper part of a dosing tank, a stirring device in the dosing tank, a dosing inner bin arranged in the middle in the dosing tank, a baffle plate arranged at the top of the dosing inner bin and a liquid outlet hopper arranged at the bottom of the dosing inner bin in a sealing manner, the bottom of the liquid outlet hopper is communicated with a liquid outlet pipe, the top of the dispensing tank is communicated with a feeding pipe, the feeding end of the top of the feeding pipe is provided with a discharging bin, one side of the discharging bin is communicated with a spiral feeding device, a heating cavity is formed between the dispensing inner bin and the inner wall of the dispensing tank, and one side of the heating cavity is provided with a heat supply device. According to the phosphorus removal device, phosphorus removal powder is fed into the medicine preparation inner bin through the spiral feeding device to be mixed with water, the phosphorus removal powder is stirred through the stirring device, the hot-air blower is matched with the heating cavity to heat stirred medicine liquid, then the mixing efficiency is improved, the phosphorus absorption and conversion capacity of the medicine liquid is enhanced, the flowability of the medicine liquid is improved, the viscosity of the medicine liquid is reduced, and therefore the phosphorus removal effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment equipment technical field, concretely relates to a sewage treatment's dosing device. BACKGROUND

[0002] Sewage treatment is the process that the sewage reaches the water quality requirement of being discharged into a water body or reused, and is widely applied in each field such as building, agriculture, traffic, energy, petrochemical, environmental protection, city landscape, medical treatment, catering and the like.

[0003] In the related art, in the large sewage treatment scene, the sewage is generally first deposited and filtered, then the coarsely filtered sewage is input into a sewage treatment tank, and subsequent further filtration is carried out, and according to the requirements of the environmental protection department, the total phosphorus content in the sewage must be reduced to a specific low level, and then a dosing device is needed to add a phosphorus removal agent into the sewage treatment tank, so that the phosphorus removal agent reacts with the sewage to form insoluble precipitates, thereby effectively removing the phosphorus in the sewage to meet the discharge standard.

[0004] The phosphorus removal agent is mostly in powder form for convenient transportation, also known as phosphorus removal powder, and needs to be mixed with water before being supplied into the sewage treatment tank for use, and most of the current dosing devices need manual liquid medicine dispensing, the phosphorus removal powder is poured into a medicine dispensing tank, and is fully stirred with the water in the medicine dispensing tank before use, but the personnel cannot easily control the dosing amount of the phosphorus removal powder during dispensing, so that uneven dispensing of the liquid medicine occurs during dispensing, and the liquid medicine formed after the current phosphorus removal powder is stirred in the medicine dispensing tank is relatively viscous, so that the liquid outlet pipe wall is more prone to adhering to the liquid medicine residues after the liquid phosphorus removal agent is output, so that the liquid outlet pipe is easily blocked, thereby affecting the subsequent phosphorus removal work. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a sewage treatment's dosing device, the utility model discloses through the phosphorus removal powder in bag is poured into the spiral feed device, and then the phosphorus removal powder enters the medicine dispensing inner chamber and mixes with water, the stirring device is started synchronously to stir the liquid in the medicine dispensing inner chamber, the hot air blower is started synchronously to supply hot air to the heating cavity, the phosphorus removal agent is warmed in the stirring, and then the mixing efficiency is improved, the activity of microorganism is improved, the absorption and conversion capacity of phosphorus is enhanced, the phosphorus removal agent and water can be fully mixed, the fluidity is improved, and the viscosity is reduced, so that the phosphorus removal effect is improved.

[0006] In order to solve the above technical problems, the utility model provides a dosing device for sewage treatment, including the support frame that is arranged in the bottom of dosing jar, the overhaul platform that is arranged on the upper portion of dosing jar, the motor that is arranged on the top of dosing jar, the stirring device that is inserted into dosing jar in the lower portion of motor, the dosing inner bin that is arranged in the middle portion in dosing jar, the baffle that is arranged on the top of dosing inner bin, the sealed outlet hopper that is arranged in the bottom of dosing inner bin, the outlet pipe that is communicated and arranged in the bottom of outlet hopper, the feed pipe that is communicated and arranged on the top of dosing jar, the liquid inlet pipe that is arranged on the side of feed pipe, the discharge bin that is arranged on the top feed end of feed pipe, the spiral feed device that is communicated and arranged on the side of discharge bin, the heating cavity that is arranged between dosing inner bin and the inner wall of dosing jar, the heat supply device that is communicated and arranged on one side of heating cavity and passes through the lateral wall of dosing jar.

[0007] The heat supply device includes the heat supply pipe in sealed communication with the heating cavity, the heat supply pipe is used to supply the hot air in the hot air blower to the heating cavity, the heat supply pipe is used to circulate the heated gas, the heat supply pipe is used to connect the heating cavity and the hot air blower, a first valve is arranged in the middle of the heat supply pipe, the first valve is used to control the opening and closing of the heat supply pipe, the air inlet end of the heat supply pipe is provided with a hot air blower, the hot air blower is used to supply the heated air to the heating cavity.

[0008] The discharge bin is in the shape of a ladder, the discharge bin is in communication with the feed end of the feed pipe, the discharge bin is detachably provided with an overhaul partition plate on the top, the overhaul partition plate is used to dredge when the discharge bin is blocked.

[0009] The spiral feed device includes a feed channel in communication with the side of the discharge bin away from the motor, the feed channel is used to circulate the phosphorus removal powder, a spiral conveying shaft is arranged in the feed channel, the spiral conveying shaft is used to drive the conveying blades to rotate, a plurality of conveying blades are arranged on the surface of the spiral conveying shaft, the conveying blades are used to convey the phosphorus removal powder in the feed channel to the discharge end of the feed channel in a ladder-like manner, a drive motor is arranged on the side of the feed channel away from the motor, the drive motor is used to drive the spiral conveying shaft to rotate, an inlet is arranged on the upper portion of the end of the feed channel away from the motor, the inlet is used to facilitate personnel to pour the bagged phosphorus removal powder into the feed channel, a first support is arranged on the lower portion of the end of the feed channel away from the motor, the first support is used to fixedly support the feed channel.

[0010] A second support is arranged on the bottom of the first support, the second support is used to provide an operating space for the feeding personnel, the bearing surface of the second support is also used to store excess bagged phosphorus removal powder, the bearing surface of the second support is provided with an opening, the opening facilitates the movement of the lifting platform, the opening passes through the bearing surface of the overhaul platform, an electric lifting rod is arranged on one side of the support frame, the electric lifting rod is used to drive the lifting platform to move up and down, a lifting platform is arranged on the telescopic end of the electric lifting rod, the lifting platform is used to send the bagged phosphorus removal powder on the ground to the second support, the lifting platform is consistent in size with the opening, an upper feeding groove is arranged on the upper portion of the lifting platform, the upper feeding groove is used to place the bagged phosphorus removal powder, the upper feeding groove corresponds to the opening, and the size of the upper feeding groove is smaller than the size of the opening.

[0011] The second valve is arranged on the liquid outlet pipe and is used for controlling opening and closing of the liquid outlet pipe.

[0012] One side of the maintenance platform is provided with a first ladder, and one side of the second support is provided with a second ladder.

[0013] Compared with the prior art, the application has at least one of the following beneficial technical effects:

[0014] 1. The bagged phosphorus removal powder is poured into the spiral feeding device, and then the phosphorus removal powder enters the medicine preparation inner bin and mixes with water, the stirring device is started synchronously to stir the liquid in the medicine preparation inner bin, and the air heater is started synchronously to supply hot air to the heating cavity, so that the phosphorus removal agent is warmed in the stirring process, the mixing efficiency is improved, the activity of microorganisms is improved, the absorption and conversion capacity of phosphorus is enhanced, the phosphorus removal agent and water can be fully mixed, the fluidity is improved and the viscosity is reduced, and the phosphorus removal effect is improved.

[0015] 2. The maintenance partition plate is used for dredging when the discharge bin is blocked, and the spiral conveying shaft is used for driving the conveying blade to rotate, so that the conveying blade can convey the phosphorus removal powder in the feeding channel to the discharge end of the feeding channel in a stepped manner, and then the phosphorus removal powder enters the medicine preparation inner bin.

[0016] 3. The second support is used for providing an operation space for the feeding personnel, the bearing surface of the second support is also used for storing excess bagged phosphorus removal powder, the opening is convenient for the movement of the lifting platform, the bagged phosphorus removal powder is placed into the feeding groove, the lifting platform is moved up and down by the electric lifting rod, the feeding groove is moved up and down, and then the bagged phosphorus removal powder is supplied to the opening of the second support, so that the bagged phosphorus removal powder is conveniently carried. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the main structure of the utility model;

[0018] Figure 2 It is a schematic view of the assembly structure of the utility model;

[0019] Figure 3 It is a schematic view of the assembly structure of the utility model; Figure 2

[0020] Figure 4 It is a front view of the utility model;

[0021] Figure 5 It is a front view of the utility model;

[0022] ​Explanation of reference signs: 100, dispensing tank; 101, support frame; 102, maintenance platform; 103, motor; 104, stirring device; 200, dispensing inner bin; 201, baffle; 202, liquid outlet; 203, liquid outlet pipe; 204, second valve; 300, feeding pipe; 301, liquid inlet pipe; 302, discharging bin; 303, spiral feeding device; 304, maintenance partition; 305, feeding channel; 306, spiral conveying shaft; 307, conveying blade; 308, driving machine; 309, feeding port; 400, heating cavity; 401, heating device; 402, heating pipe; 403, first valve; 404, hot air machine; 500, first support; 501, second support; 502, opening; 503, electric lifting rod; 504, lifting platform; 505, feeding groove; 506, first ladder; 507, second ladder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings of the embodiments of the present application to make the following specific description. Figures 1-5 The technical scheme of the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0024] As Figures 1-5The embodiment provides a sewage treatment dosing device, which comprises a support frame 101 arranged at the bottom of a dosing tank 100, the support frame 100 is used for supporting and fixing the bottom of the dosing tank 100, the support frame 101 comprises four supporting legs, each supporting leg is welded to the outer wall of the dosing tank 100, a maintenance platform 102 arranged at the upper portion of the dosing tank 100, a motor 103 arranged at the top of the dosing tank 100, the motor 103 is provided with a fixing support on the surface and used for connecting and fixing the motor 103 with the top of the dosing tank 100, a stirring device 104 arranged at the lower portion of the motor 103 and extending into the dosing tank 100, the stirring device 104 comprises a rotating shaft, the rotating shaft extends through the top of the dosing tank 100 and the bottom of a dosing inner bin 200 extending into the dosing tank 100 through a baffle 201, a bearing seat is arranged at the bottom of the rotating shaft, a cross arm is arranged at the bottom of the bearing seat, the cross arm is welded to the inner wall of the dosing inner bin 200 at both ends, a plurality of stirring paddles are arranged on the surface of the rotating shaft, a dosing inner bin 200 is arranged in the middle of the dosing tank 100, the dosing inner bin 200 is a hollow cylinder, the dosing inner bin 200 is provided with the baffle 201 at the top, the baffle 201 is circular, a cavity is arranged between the baffle 201 and the top of the dosing tank 100, the cavity can be filled with heat preservation materials, a liquid outlet 202 is sealingly arranged at the bottom of the dosing inner bin 200, the liquid outlet 202 is circular and has a truncated cone shape, the liquid outlet 202 is welded to the bottom of the dosing inner bin 200 in communication, a liquid outlet pipe 203 is arranged at the bottom of the liquid outlet 202 in communication, the liquid outlet pipe 203 is welded to the liquid outlet 202 in communication, a feeding pipe 300 is arranged at the top of the dosing tank 100 in communication, the feeding pipe 300 extends through the top of the dosing tank 100 and the baffle 201 and enters the dosing inner bin 200, and the feeding pipe 300 is welded and reinforced at the welding position, a liquid inlet pipe 301 is arranged at the side of the feeding pipe 300, the liquid inlet pipe 301 extends through the tank wall of the dosing tank 100 and the baffle 201 and enters the dosing inner bin 200, and the liquid inlet pipe 301 is welded and reinforced at the welding position, a feeding bin 302 is arranged at the feeding end of the top of the feeding pipe 300, a spiral feeding device 303 is arranged at one side of the feeding bin 302 in communication, a heating cavity 400 is arranged between the dosing inner bin 200 and the inner wall of the dosing tank 100, a heating device 401 is arranged at one side of the heating cavity 400 and extends through the side wall of the dosing tank 100 in communication, and a temperature detector can be arranged at the other side of the heating cavity 400.

[0025] In use, by pouring the bagged phosphorus removal powder into the feeding channel 305 through the feeding port 309, and then starting the driving machine 308 to drive the spiral conveying shaft 306 to rotate and drive the conveying blades 307 to move the phosphorus removal powder to the discharge end of the feeding channel 305, and then the phosphorus powder enters the discharging bin 302 and then enters the feeding pipe 300 and finally enters the dispensing inner bin 200 in the dispensing tank 100 to mix with water, the motor 103 is started synchronously to drive the stirring device 104 to stir and mix the phosphorus removal powder and water in the dispensing inner bin 200, the air heater 404 is started synchronously to supply hot air in the heating cavity 400, and the phosphorus removal agent is heated in the stirring process, thereby improving the mixing efficiency, increasing the activity of microorganisms, enhancing the absorption and conversion capacity of phosphorus, and making the phosphorus removal agent and water fully mixed, improving the fluidity and reducing the viscosity, thereby improving the phosphorus removal effect.

[0026] The embodiment provides a dosing device for sewage treatment,

[0027] As shown in Figure 1 , 2 , 5: the heat supply device 401 comprises a heat supply pipe 402 in sealed communication with the heating cavity 400, the heat supply pipe 402 is welded and connected with the tank wall of the dispensing tank 100, thereby enabling the heat supply pipe 402 to communicate with the heating cavity 400, the heat supply pipe 402 is used for supplying hot air in the air heater 404 into the heating cavity 400, for circulating the heated air, and for enabling the heating cavity 400 to communicate with the air heater 404, a first valve 403 is arranged in the middle of the heat supply pipe 402, the first valve 403 is fixedly connected with the heat supply pipe 402 through flanges, the first valve 403 is used for controlling the opening and closing of the heat supply pipe 402, and the air inlet end of the heat supply pipe 402 is provided with the air heater 404, the air outlet of the air heater 404 is fixedly connected with the air inlet end of the heat supply pipe 402 through flanges, and the air heater 404 is used for supplying the heated air into the heating cavity 400, the air heater 404 is a small-power machine, and the temperature of the heating cavity 400 is prevented from being too high.

[0028] The heat supply pipe 402 is used for supplying hot air in the air heater 404 into the heating cavity 400, for circulating the heated air, and for enabling the heating cavity 400 to communicate with the air heater 404, the air heater 404 is used for supplying the heated air into the heating cavity 400, the air heater 404 is a small-power machine, and the temperature of the heating cavity 400 is prevented from being too high.

[0029] As shown in Figure 1 , 2, 3, 4, 5: the discharge bin 302 is in the shape of a ladder, the discharge bin 302 is welded to communicate with the feed end of the feed pipe 300, the top of the discharge bin 302 is detachably provided with an inspection partition plate 304, the upper part of the discharge bin 302 is hingedly connected with the inspection partition plate 304, the inspection partition plate 304 is used to dredge when the discharge bin 302 is blocked, the screw feeding device 303 includes a feeding channel 305 connected with the side of the discharge bin 302 away from the motor 103, the discharge end of the feeding channel 305 is welded to communicate with the side wall of the discharge bin 302, the feeding channel 305 is used for phosphorus removal powder flow, the feeding channel 305 is provided with a spiral conveying shaft 306, the spiral conveying shaft 306 and the conveying blade 307 are integrally welded or fixed by bolts, the spiral conveying shaft 306 is used to drive the conveying blade 307 to rotate, the spiral conveying shaft 306 is provided with a plurality of conveying blades 307, the conveying blade 307 is used to convey the phosphorus removal powder in the feeding channel 305 to the discharge end of the feeding channel 305, the side of the feeding channel 305 away from the motor 103 is provided with a driving machine 308, the driving machine 308 is welded to the first support 500 through a triangular support, the output shaft of the driving machine 308 is mechanically sealed connected with the spiral conveying shaft 306 through a shaft coupling, the driving machine 308 is used to drive the screw conveying shaft to rotate, the upper part of the end of the feeding channel 305 away from the motor 103 is provided with a feeding port 309, the feeding port 309 is in the shape of a square groove, the feeding port 309 is used to facilitate personnel to pour the bagged phosphorus removal powder into the feeding channel 305, the lower part of the end of the feeding channel 305 away from the motor 103 is provided with a first support 500, the top of the first support 500 is U-shaped and used to support the feeding channel 305, the first support 500 is used to fixedly support the feeding channel 305.

[0030] The effect is that the inspection partition plate 304 is used to dredge when the discharge bin 302 is blocked, the spiral conveying shaft 306 is used to drive the conveying blade 307 to rotate, so that the conveying blade 307 conveys the phosphorus removal powder in the feeding channel 305 to the discharge end of the feeding channel 305, and then the phosphorus removal powder enters the internal medicine bin 200.

[0031] As Figure 1 , 2, 4, 5: the first support 500 bottom is provided with the second support 501, the second support 501 includes a support plate and four legs, the leg is weldable with the bearing surface of the maintenance platform 102 or is fixed by bolt connection, the second support 501 is used to provide operating space for feeding personnel, the second support 501 can be welded with the protective fence around, the bearing surface of the second support 501 is also used to store excess bagged phosphorus removal powder, the bearing surface of the second support 501 is provided with the opening 502, the outer surface of the opening 502 can be additionally provided with a guardrail, the opening 502 facilitates the movement of the lifting platform 504, the opening 502 passes through the bearing surface of the maintenance platform 102, the support frame 101 is provided with the electric lifting rod 503 on one side, the driving end of the electric lifting rod 503 is connected with the ground, the electric lifting rod 503 is used to drive the lifting platform 504 to move up and down, the telescopic end of the electric lifting rod 503 is provided with the lifting platform 504, the lower part of the lifting platform 504 is fixed with the telescopic end of the electric lifting rod 503 by bolt connection, the lifting platform 504 is used to send the ground bagged phosphorus removal powder into the second support 501, the lifting platform 504 is consistent in size with the opening 502, the upper part of the lifting platform 504 is provided with the feeding groove 505, the feeding groove 505 is square in shape, the feeding groove 505 is fixed with the lifting platform 504 by bolt connection, the feeding groove 505 is used to place bagged phosphorus removal powder, the feeding groove 505 corresponds to the opening 502, and the size of the feeding groove 505 is smaller than that of the opening 502.

[0032] The effect is that the second support 501 is used to provide operating space for feeding personnel, the bearing surface of the second support 501 is also used to store excess bagged phosphorus removal powder, the opening 502 facilitates the movement of the lifting platform 504, the bagged phosphorus removal powder is placed into the feeding groove 505, the lifting platform 504 is driven by the electric lifting rod 503 to move up and down, and then the feeding groove 505 moves up and down, and then the bagged phosphorus removal powder is supplied to the opening 502 of the second support 501, so that the bagged phosphorus removal powder is conveniently carried.

[0033] As shown in Figure 1 , 2 , 4, 5: the outlet pipe 203 is provided with the second valve 204, the second valve 204 is fixed with the outlet pipe 203 through flange connection, the second valve 204 is used to control the opening and closing of the outlet pipe 203, one side of the maintenance platform 102 is provided with the first ladder 506, the first ladder 506 is welded with the support column on the maintenance platform 102, the first ladder 506 facilitates personnel to enter the maintenance platform 102, one side of the second support 501 is provided with the second ladder 507, the second ladder 507 is welded with the support column on the second support 501, and the second ladder 507 facilitates personnel to enter the second support 501 from the maintenance platform 102.

[0034] Working principle: through the bagged phosphorus removal powder is poured into the feeding channel 305 through the feed port 309 in turn, in turn, start the drive machine 308 in turn make screw conveying shaft 306 driven conveying blade 307 rotation, in turn, driven phosphorus removal powder to the discharge end of feeding channel 305 moves, in turn, make phosphorus powder into the discharge bin 302 in turn into the feed pipe 300, finally into the dispensing tank 100 in the dispensing inner bin 200 and water mixing, synchronous start motor 103 driven stirring device 104 stirring in turn to the dispensing inner bin 200 in the phosphorus removal powder and water are stirred and mixed, synchronous start the air heater 404, in turn, to the heating cavity 400 supply hot gas, in turn, make phosphorus removal agent in the stirring warming, in turn, improve its mixing efficiency, in turn, improve the activity of microorganism, enhance its absorption and conversion capacity to phosphorus, make phosphorus removal agent and water can be fully mixed, improve its fluidity reduces its viscosity, thereby improve the effect of phosphorus removal.

[0035] In addition, it also needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can also be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A sewage treatment dosing device, comprising a support frame (101) arranged at the bottom of a dosing tank (100), an inspection platform (102) arranged at the upper portion of the dosing tank (100), a motor (103) arranged at the top of the dosing tank (100), and a stirring device (104) arranged at the lower portion of the motor (103) and extending into the dosing tank (100), characterized in that: The medicine dispensing tank (100) is internally provided with a medicine dispensing inner bin (200), the top of the medicine dispensing inner bin (200) is provided with a baffle (201), the bottom of the medicine dispensing inner bin (200) is sealingly provided with a liquid outlet (202), the bottom of the liquid outlet (202) is communicatively provided with a liquid outlet pipe (203), the top of the medicine dispensing tank (100) is communicatively provided with a feeding pipe (300), the feeding pipe (300) is laterally provided with a liquid inlet pipe (301), the top feeding end of the feeding pipe (300) is provided with a lower bin (302), one side of the lower bin (302) is communicatively provided with a spiral feeding device (303), a heating cavity (400) is arranged between the medicine dispensing inner bin (200) and the inner wall of the medicine dispensing tank (100), one side of the heating cavity (400) is communicatively provided with a heating device (401) through the side wall of the medicine dispensing tank (100).

2. The dosing device for sewage treatment according to claim 1, characterized in that: The heating device (401) comprises a heating pipe (402) in sealing communication with the heating cavity (400), a first valve (403) is arranged in the middle of the heating pipe (402), and the air inlet end of the heating pipe (402) is provided with a hot air blower (404).

3. A dosing device for sewage treatment according to claim 2, characterized in that: The lower bin (302) is in the shape of a ladder, the lower bin (302) is in communication with the feeding end of the feeding pipe (300), and the top of the lower bin (302) is detachably provided with an inspection partition plate (304).

4. The dosing device for sewage treatment according to claim 3, characterized in that: The spiral feeding device (303) comprises a feeding channel (305) in communication with the side of the lower bin (302) away from the motor (103), a spiral conveying shaft (306) is arranged in the feeding channel (305), a plurality of conveying blades (307) are arranged on the surface of the spiral conveying shaft (306), a driving machine (308) is arranged on the side of the feeding channel (305) away from the motor (103), an inlet (309) is arranged on the upper part of the end of the feeding channel (305) away from the motor (103), and a first support (500) is arranged on the lower part of the end of the feeding channel (305) away from the motor (103).

5. A dosing device for sewage treatment according to claim 4, characterized in that: The first support (500) is provided with a second support (501) at the bottom, the bearing surface of the second support (501) is provided with an opening (502), the opening (502) penetrates the bearing surface of the inspection platform (102), one side of the support frame (101) is provided with an electric lifting rod (503), the telescopic end of the electric lifting rod (503) is provided with a lifting platform (504), the lifting platform (504) is provided with a feeding groove (505) at the top, the feeding groove (505) corresponds to the opening (502), the lifting platform (504) is the same size as the opening (502), and the size of the feeding groove (505) is smaller than that of the opening (502).

6. A dosing device for sewage treatment according to claim 5, characterized in that: The liquid outlet pipe (203) is provided with a second valve (204).

7. A dosing device for sewage treatment according to claim 6, characterized in that: One side of the inspection platform (102) is provided with a first ladder (506), and one side of the second support (501) is provided with a second ladder (507).

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