Liquid medicine mixing device for sewage treatment

Abstract

The invention discloses a liquid medicine mixing device for sewage treatment, the liquid medicine mixing device comprises a shell, a medicine feeding assembly, a spraying pipe and a water pumping pipe, the bottom of the shell is communicated with a sewage pipe; the bottom surface of the shell is communicated with a sewage pumping pipe; the spraying pipe is arranged in the shell; a plurality of spraying openings are uniformly formed in the spraying pipe; the medicine feeding assembly is arranged on the top of the shell and communicates with the spraying pipe. The water pumping pipe is arranged on the shell; the bottom end of the water pumping pipe penetrates through and extends into the shell, and the top end of the water pumping pipe is located outside the shell. The part, located in the shell, of the water pumping pipe is telescopic, and a floating air bag is arranged at the bottom end of the water pumping pipe. The bottom end opening of the water pumping pipe is located below the floating air bag, and the gravity center of the floating air bag is located on the side close to the bottom end opening of the water pumping pipe. According to the liquid medicine mixing device for sewage treatment, the water pumping position can be automatically adjusted according to the change of the water level, blockage caused by suction of excessive solid-phase pollutants is avoided, and the continuity of water pumping is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a liquid medicine mixing device for sewage treatment. Background Art

[0002] In the sewage treatment industry, as the treatment process progresses, the water level in the treatment tank or reactor will continue to change, which puts forward the requirement of dynamic adaptability for pumping operations. Most of the pumping devices in traditional sewage treatment systems use fixed-position pumping pipes, and their design often ignores the impact of water level fluctuations on pumping efficiency. When the water level drops, the fixed pumping pipe may not be able to reach the water surface, resulting in pumping failure; when the water level rises, it may be blocked due to the inhalation of too many solid pollutants, affecting the continuity of pumping and the treatment effect.

[0003] In addition, due to the different specific conditions of different sewage treatment projects, including treatment scale, water quality characteristics, water level range, etc., the traditional fixed pumping pipe design is difficult to flexibly cope with these differences, resulting in low pumping efficiency and high maintenance costs in practical applications. These problems are particularly prominent in situations where large amounts of high-concentration sewage need to be treated or where efficient and continuous operation is required. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, one purpose of the present application is to provide a liquid medicine mixing device for sewage treatment, which can automatically adjust the pumping position according to water level changes to avoid blockage due to excessive suction of solid pollutants and will not affect the continuity of pumping.

[0006] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a liquid medicine mixing device for sewage treatment, comprising a shell, a medicine delivery assembly, a spray pipe and a water suction pipe, wherein the bottom of the shell is connected to a sewage pipe; the bottom surface of the shell is connected to a sewage suction pipe; the spray pipe is arranged inside the shell, the bottom of the spray pipe extends to the bottom of the shell, and the top of the spray pipe is connected to the shell; a plurality of spray ports are evenly opened on the spray pipe; the medicine delivery assembly is arranged at the top of the shell, and the medicine delivery assembly is connected to the spray pipe; the water suction pipe is arranged on the shell, and the water suction pipe and the spray pipe are staggered; the bottom end of the water suction pipe extends into the shell, and the top end of the water suction pipe is located outside the shell; the part of the water suction pipe located in the shell is retractable, and a floating air bag is arranged on the bottom end of the water suction pipe; the bottom end opening of the water suction pipe is located below the floating air bag, and the center of gravity of the floating air bag is located on the side close to the bottom end opening of the water suction pipe.

[0007] The liquid-drug mixing device for sewage treatment according to the embodiment of the present application can automatically adjust the pumping position according to the change of water level to avoid blockage due to the suction of excessive solid pollutants and will not affect the continuity of pumping.

[0008] In addition, the liquid medicine mixing device for sewage treatment proposed in the present application may also have the following additional technical features:

[0009] In one embodiment of the present application, the maximum length of the portion of the water pumping pipe located inside the shell after extension is not less than the length of the spray pipe.

[0010] In one embodiment of the present application, the medicine delivery assembly includes a medicine liquid tank, a pumping mechanism and a medicine delivery pipe, wherein the medicine liquid tank is installed on the top surface of the shell; the pumping mechanism is installed on the medicine liquid tank, the input end of the pumping mechanism is connected to the interior of the medicine liquid tank, and the output end of the pumping mechanism is connected to the medicine delivery pipe; the end of the medicine delivery pipe away from the medicine liquid tank passes through the shell and is connected to the spray pipe.

[0011] In one embodiment of the present application, a separation component is also provided inside the shell; the separation component includes an outer positioning ring, an inner positioning ring, a connecting rod and a separation gauze, wherein the inner positioning ring is slidably mounted on the spray pipe, and the centers of the inner positioning ring and the outer positioning ring are located at the same point; the outer wall of the outer positioning ring is slidably connected to the inner wall of the shell; the two ends of the connecting rod are respectively connected to the outer positioning ring and the inner positioning ring; the separation gauze is in the shape of a ring, and is located below the connecting rod; the inner circle of the separation gauze is connected to the outer wall of the inner positioning ring, and the outer circle of the separation gauze is connected to the inner wall of the outer positioning ring.

[0012] In one embodiment of the present application, the separation component also includes a plurality of regulating air bags; the plurality of regulating air bags are evenly arranged above the separation gauze, one end of the regulating air bag is connected to the outer positioning ring, and the other end of the regulating air bag is connected to the inner positioning ring; the bottom end opening of the water pumping pipe is in contact with the separation gauze, and the regulating air bag and the water pumping pipe are staggered.

[0013] In one embodiment of the present application, the separation component further includes a plurality of connecting air tubes; two adjacent regulating air bags are connected via the connecting air tubes.

[0014] In one embodiment of the present application, an air control component is provided in the shell, and the air control component includes an air pump and an air pipe; the air pump is installed on the top of the shell, the input end of the air pump is connected to the inside of the shell, and the output end of the air pump is connected to the air pipe; the air pipe is a telescopic tube, and the end of the air pipe away from the air pump is connected to any one of the regulating air bags.

[0015] In one embodiment of the present application, the maximum length of the gas pipe after extension is not less than the length of the spray pipe.

[0016] In one embodiment of the present application, a telescopic membrane is further provided inside the shell; the telescopic membrane is a circular tubular structure, and the spray pipe passes through the telescopic membrane; the bottom end of the telescopic membrane is sleeved on the inner positioning ring, and the top end of the telescopic membrane is connected to the inner top surface of the shell.

[0017] In one embodiment of the present application, a plurality of water leakage holes are provided on the inner wall of the inner positioning ring.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a schematic structural diagram of a liquid medicine mixing device for sewage treatment according to an embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of a floating air bag of a liquid medicine mixing device for sewage treatment according to an embodiment of the present application;

[0022] Figure 3 It is a schematic top view of a separation component of a liquid medicine mixing device for sewage treatment according to one embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the structure of a separation component of a liquid medicine mixing device for sewage treatment according to one embodiment of the present application;

[0024] Figure 5 This is a schematic diagram of the structure of a separation component of a liquid medicine mixing device for sewage treatment according to another embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of a telescopic membrane structure of a liquid medicine mixing device for sewage treatment according to an embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the position of a telescopic membrane of a liquid medicine mixing device for sewage treatment according to an embodiment of the present application.

[0027] As shown in the figure: 10. Shell; 11. Sewage pipe; 12. Sewage extraction pipe; 13. Support leg; 20. Medicine delivery assembly; 21. Medicine liquid tank; 22. Pumping mechanism; 23. Medicine delivery pipe; 30. Spray pipe; 31. Spray port; 40. Water extraction pipe; 41. Floating air bag; 50. Separation assembly; 51. Outer positioning ring; 52. Inner positioning ring; 53. Connecting rod; 54. Separation gauze; 55. Adjusting air bag; 56. Connecting air pipe; 60. Air control assembly; 61. Air pump; 62. Air pipe; 70. Telescopic membrane. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0029] The following describes a liquid medicine mixing device for sewage treatment according to an embodiment of the present application in conjunction with the accompanying drawings.

[0030] like Figures 1 to 7 As shown, the liquid medicine mixing device for sewage treatment according to the embodiment of the present application may include a housing 10 , a medicine delivery assembly 20 , a spray pipe 30 and a water pumping pipe 40 .

[0031] The bottom of the shell 10 is connected to a sewage pipe 11 , and sewage can be discharged into the shell 10 through the sewage pipe 11 .

[0032] The bottom surface of the shell 10 is connected to a sewage extraction pipe 12 , and a supporting leg 13 is provided at the bottom of the shell 10 . The solid pollutants treated inside the shell 10 can be discharged through the sewage extraction pipe 12 .

[0033] The spray pipe 30 is disposed inside the housing 10 , the bottom of the spray pipe 30 extends to the bottom of the housing 10 , and the top of the spray pipe 30 is connected to the housing 10 .

[0034] It should be noted that the spray pipe 30 can be vertically arranged at the center of the housing 10 .

[0035] A plurality of spray ports 31 are evenly disposed on the spray pipe 30 .

[0036] It should be noted that the plurality of spray ports 31 may be 25, 30, 35, 40, 45 spray ports 31, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0037] The medicine delivery assembly 20 is disposed on the top of the housing 10 , and the medicine delivery assembly 20 is communicated with the spray pipe 30 .

[0038] It should be noted that the medicine delivery assembly 20 is used to deliver the required medicine liquid into the spray pipe 30 for spraying.

[0039] The water extraction pipe 40 is disposed on the housing 10 , and the water extraction pipe 40 and the spray pipe 30 are staggered.

[0040] The bottom end of the water pumping pipe 40 passes through and extends into the shell 10 , and the top end of the water pumping pipe 40 is located outside the shell 10 .

[0041] It should be noted that the top end of the water pumping pipe 40 can be connected to a water pump (not shown in the figure), and the water in the housing 10 can be pumped out through the water pumping pipe 40.

[0042] The part of the water pumping pipe 40 located in the housing 10 is retractable, and a floating air bag 41 is provided on the bottom end of the water pumping pipe 40 .

[0043] The maximum length of the portion of the water extraction pipe 40 located in the housing 10 after extension is not less than the length of the spray pipe 30 .

[0044] The bottom opening of the water pumping pipe 40 is located below the floating airbag 41 , and the center of gravity of the floating airbag 41 is located close to the bottom opening of the water pumping pipe 40 .

[0045] It should be noted that the buoyancy bag 41 is a hollow bag structure, and the material of the buoyancy bag 41 is rubber. The buoyancy bag 41 can float on the water surface, and the bottom opening of the water pumping pipe 40 can penetrate into the water.

[0046] It should be noted that the distance between the bottom opening of the water pumping pipe 40 and the floating air bag 41 is selected according to actual needs and will not be described in detail here.

[0047] In order to clearly explain the above embodiment, in one embodiment of the present application, as Figure 1 As shown, the medicine delivery assembly 20 includes a medicine liquid tank 21 , a pumping mechanism 22 and a medicine delivery tube 23 .

[0048] The medicine liquid tank 21 is installed on the top surface of the housing 10 , and the medicine liquid tank 21 is used to store medicine liquid.

[0049] The pumping mechanism 22 is installed on the medicine liquid tank 21 , the input end of the pumping mechanism 22 is communicated with the interior of the medicine liquid tank 21 , and the output end of the pumping mechanism 22 is connected to the medicine delivery pipe 23 .

[0050] The pumping mechanism 22 may be a water pump.

[0051] One end of the medicine delivery pipe 23 away from the medicine liquid tank 21 passes through the housing 10 and is connected to the spray pipe 30 , so that the pumping mechanism 22 can transport the medicine liquid in the medicine liquid tank 21 to the spray pipe 30 through the medicine delivery pipe 23 .

[0052] It should be noted that a transparent observation window (not shown in the figure) may be opened on the side wall of the housing 10. The observation window is a common structure in the prior art and will not be described in detail here.

[0053] Specifically, during the actual operation, the relevant personnel start the pumping mechanism 22 to deliver the liquid medicine from the liquid medicine tank 21 into the spray pipe 30 through the medicine delivery pipe 23; at the same time, the sewage is discharged into the shell 10 through the sewage pipe 11; the sewage is mixed with the liquid medicine sprayed from the spray pipe 30, and after standing for a period of time, the pollutants in the sewage are decomposed or precipitated under the action of the liquid medicine, and the liquid water in the upper layer is pumped out through the pumping pipe 40 for subsequent treatment or discharge, and then the precipitated solid pollutants are discharged through the sewage pumping pipe 12.

[0054] The uniform spraying of the spray pipe 30 accelerates the mixing and reaction process of the sewage and the liquid medicine; the retractability of the pumping pipe 40 and the setting of the floating air bag 41 enable the pumping pipe 40 to work effectively at different water levels, thereby improving the flexibility and efficiency of water pumping, while preventing solid pollutants from being pumped away by the pumping pipe 40, thereby improving the efficiency and stability of sewage treatment.

[0055] In one embodiment of the present application, Figure 1 , Figure 3 and Figure 4 As shown, a separation assembly 50 is also disposed inside the housing 10 .

[0056] The separation assembly 50 includes an outer positioning ring 51 , an inner positioning ring 52 , a connecting rod 53 and a separation gauze 54 .

[0057] The inner positioning ring 52 is slidably sleeved on the spray pipe 30 , and the centers of the inner positioning ring 52 and the outer positioning ring 51 are located at the same point.

[0058] The outer wall of the outer positioning ring 51 is slidably connected to the inner wall of the housing 10 .

[0059] Both ends of the connecting rod 53 are connected to the outer positioning ring 51 and the inner positioning ring 52 respectively, and the outer positioning ring 51 and the inner positioning ring 52 are connected together through the connecting rod 53 .

[0060] It should be noted that the number of the connecting rod 53 is at least one, for example, the number of the connecting rod 53 may be two.

[0061] The separating gauze 54 is in a ring shape and is located below the connecting rod 53 .

[0062] The inner circle of the separating gauze 54 is connected to the outer wall of the inner positioning ring 52 , and the outer circle of the separating gauze 54 is connected to the inner wall of the outer positioning ring 51 .

[0063] It should be noted that the separation gauze 54 can separate the liquid water and solid pollutants in the sewage after the drug solution is mixed. The size of the small holes on the separation gauze 54 is selected according to actual needs and will not be described in detail here.

[0064] In one embodiment of the present application, Figure 1 , Figure 3 and Figure 4 As shown, the separation assembly 50 further includes a plurality of adjustment air bags 55 .

[0065] A plurality of regulating airbags 55 are evenly arranged above the separating gauze 54 , one end of the regulating airbag 55 is connected to the outer positioning ring 51 , and the other end of the regulating airbag 55 is connected to the inner positioning ring 52 .

[0066] It should be noted that the multiple adjustment airbags 55 can be 2, 3, 4, 5, 6 adjustment airbags 55, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0067] It should be noted that the regulating airbag 55 is a hollow sac structure, and the material of the regulating airbag 55 is rubber. The regulating airbag 55 can drive the entire separation component 50 to float on the water surface.

[0068] The bottom opening of the water extraction pipe 40 abuts against the separating gauze 54 , and the regulating airbag 55 and the water extraction pipe 40 are staggered.

[0069] It can be understood that the separation gauze 54 is located below the regulating airbag 55. When the regulating airbag 55 floats on the water surface, the separation gauze 54 is located below the water surface, and the water above the separation gauze 54 is the separated liquid water. At this time, the floating airbag 41 also floats on the water surface, so that the bottom opening of the pumping pipe 40 can pump the liquid water; as the sewage and the liquid medicine mix, the solid phase pollutants in the sewage begin to precipitate, and the liquid phase water in the sewage enters the top of the separation gauze 54 through the small holes, and mixes with the solid phase pollutants. The bottom opening of the water pumping pipe 40 contacts the separation gauze 54, and as the water pumping pipe 40 is started, the liquid water is pumped out; as the water pumping process proceeds, the water level gradually drops, and the separation component 50 also drops accordingly, keeping the separation gauze 54 always below the water surface; due to the synergistic effect of the water pumping pipe 40 and the separation component 50, the liquid water and solid pollutants in the sewage are continuously separated, and the water pumping pipe 40 can continuously pump the liquid water until the liquid water in the sewage is completely pumped out.

[0070] By setting up the separation component 50, the liquid water and solid pollutants in the sewage are effectively separated, and the efficiency of the subsequent treatment process is improved; the size of the small holes of the separation gauze 54 and the number of regulating air bags 55 can be adjusted according to actual needs, so that the equipment can adapt to sewage treatment needs of different properties and scales; since solid-liquid separation is achieved, the solid pollutant load in the subsequent treatment process is reduced, and the treatment cost and energy consumption are reduced; as the separation component 50 is continuously separated and descended, the solid pollutants suspended in the upper liquid water can be blocked, so that the liquid water extracted by the pumping pipe 40 is cleaner, and the sewage treatment effect is improved.

[0071] Further, in one embodiment of the present application, Figure 1 and Figure 5 As shown, the separation assembly 50 further includes a plurality of connecting air tubes 56 , and the number of the connecting air tubes 56 is one less than the number of the regulating air bags 55 .

[0072] Two adjacent regulating airbags 55 are connected via a connecting air pipe 56 , thereby making all the regulating airbags 55 connected to each other.

[0073] In one embodiment of the present application, Figure 1 and Figure 5 As shown, an air control assembly 60 is disposed in the housing 10 , and the air control assembly 60 includes an air pump 61 and an air delivery pipe 62 .

[0074] The air pump 61 is installed on the top of the housing 10 , the input end of the air pump 61 is communicated with the interior of the housing 10 , and the output end of the air pump 61 is connected to the air delivery pipe 62 .

[0075] The air supply pipe 62 is a telescopic pipe, and one end of the air supply pipe 62 away from the air pump 61 is connected to any regulating airbag 55 , so that the air pump 61 can control the amount of gas inside the regulating airbag 55 , and further control the volume of the regulating airbag 55 .

[0076] The maximum length of the gas delivery pipe 62 after extension is not less than the length of the spray pipe 30 .

[0077] It should be noted that by controlling the volume of the airbag 55 , the buoyancy of the airbag 55 on the water surface or in the water can be controlled, thereby adjusting the sinking and floating state of the entire separation component 50 .

[0078] It should be noted that a pressure sensor may be provided inside the regulating airbag 55 , and the amount of gas inside the regulating airbag 55 may be reflected by detecting the air pressure value inside the regulating airbag 55 .

[0079] It can be understood that before the equipment is started, the regulating airbag 55 is in an initial inflation state, and the separation component 50 floats on the water surface; after the sewage is mixed with the liquid medicine, the solid pollutants begin to precipitate, and the separation gauze 54 is located below the water surface to separate the liquid water and the solid pollutants; the volume of the regulating airbag 55 can be controlled to make the separation component 50 sink, and then the liquid water and the solid pollutants are separated once or multiple times, and after the separation, the water is pumped out through the pumping pipe 40; at the same time, the volume and buoyancy of the regulating airbag 55 can also be adjusted to control the distance between the separation gauze 54 and the pumping pipe 40, to ensure that the separation component 50 descends as the water level drops, and to maintain the optimal separation position of the separation gauze 54.

[0080] By precisely controlling the sinking and floating state of the separation component 50, the separation gauze 54 is ensured to be always located at the optimal separation position, thereby improving the separation efficiency of sewage treatment; the telescopic air pipe 62 and the adjustable regulating air bag 55 enable the equipment to adapt to changes in different water levels and sewage volumes, thereby improving the adaptability and flexibility of the equipment; the precipitated sewage can be separated once or multiple times before being pumped out, thereby further ensuring the purity of the liquid water and improving the efficiency of sewage treatment.

[0081] In one embodiment of the present application, Figure 6 and Figure 7 As shown, a telescopic membrane 70 is further disposed inside the housing 10 .

[0082] The telescopic membrane 70 is a circular tubular structure, and the spray pipe 30 passes through the telescopic membrane 70 .

[0083] The bottom end of the telescopic membrane 70 is sleeved on the inner positioning ring 52 , and the top end of the telescopic membrane 70 is connected to the inner top surface of the housing 10 .

[0084] The material of the stretch film 70 is rubber.

[0085] It should be noted that the stretch film 70 is stretchable, and the elastic coefficient of the stretch film 70 is selected according to actual needs, which will not be described in detail here.

[0086] Further, in one embodiment of the present application, Figure 6 and Figure 7 As shown, a plurality of water leakage holes (not shown in the figure) may be provided on the inner wall of the inner positioning ring 52 , and the liquid medicine in the telescopic membrane 70 can flow into the sewage below the separation gauze 54 through the water leakage holes.

[0087] It should be noted that the multiple water leakage openings may be 2, 3, 4, 5, 6 water leakage openings, etc. The specific number and size of the water leakage openings are selected according to actual needs and will not be described in detail here.

[0088] It can be understood that as the spray pipe 30 starts to spray the liquid medicine, the liquid medicine sprayed from the spray port 31 located above the water surface first enters the telescopic membrane 70. Due to the barrier effect of the telescopic membrane 70, this part of the liquid medicine gathers together and flows through the leakage port to the sewage under the separation gauze 54, so that this part of the liquid medicine can contact and mix with the sewage more quickly and will not be blocked by the separation gauze 54.

[0089] The barrier and guiding function of the telescopic membrane 70 enables the drug solution to mix with the sewage more quickly, thereby improving the mixing efficiency and accelerating the precipitation rate of solid pollutants; by controlling the number and size of the leakage holes, it is ensured that the drug solution contacts the sewage in the best way, thereby improving the treatment effect; the setting of the telescopic membrane 70 reduces the waste caused by the drug solution being sprayed directly onto the separation gauze 54; the material, elastic coefficient and number and size of the leakage holes of the telescopic membrane 70 can be adjusted according to actual needs, so that the equipment can adapt to the treatment needs of sewage of different types, concentrations and heights, thereby improving the adaptability and flexibility of the equipment.

[0090] In summary, the liquid-drug mixing device for sewage treatment according to the embodiment of the present application can automatically adjust the pumping position according to the change of water level, avoid clogging due to sucking in too much solid pollutants, and will not affect the continuity of pumping.

[0091] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. A liquid medicine mixing device for sewage treatment, characterized in that: It includes a shell, a medicine delivery component, a spray pipe and a water pump, wherein: The bottom of the shell is connected with a sewage pipe; The bottom surface of the shell is connected with a sewage extraction pipe; The spray pipe is arranged inside the shell, the bottom of the spray pipe extends to the bottom of the shell, and the top of the spray pipe is connected to the shell; The spray pipe is evenly provided with a plurality of spray ports; The medicine delivery assembly is arranged on the top of the shell, and the medicine delivery assembly is communicated with the spray pipe; The water pumping pipe is arranged on the shell, and the water pumping pipe and the spraying pipe are arranged staggered; The bottom end of the water pumping pipe extends into the shell, and the top end of the water pumping pipe is located outside the shell; The part of the water pumping pipe located in the shell is retractable, and a floating air bag is arranged on the bottom end of the water pumping pipe; The bottom opening of the water pumping pipe is located below the floating airbag, and the center of gravity of the floating airbag is located on one side close to the bottom opening of the water pumping pipe.

2. The liquid medicine mixing device for sewage treatment according to claim 1, characterized in that: The maximum length of the portion of the water pumping pipe located in the shell after being extended is not less than the length of the spray pipe.

3. The liquid medicine mixing device for sewage treatment according to claim 1, characterized in that: The medicine delivery assembly includes a medicine liquid tank, a pumping mechanism and a medicine delivery pipe, wherein: The liquid medicine tank is mounted on the top surface of the shell; The pumping mechanism is installed on the medicine liquid tank, the input end of the pumping mechanism is connected to the inside of the medicine liquid tank, and the output end of the pumping mechanism is connected to the medicine delivery pipe; One end of the medicine delivery pipe away from the medicine liquid tank passes through the shell and is connected to the spray pipe.

4. The liquid medicine mixing device for sewage treatment according to claim 1, characterized in that: A separation component is also provided inside the housing; The separation assembly comprises an outer positioning ring, an inner positioning ring, a connecting rod and a separation gauze, wherein: The inner positioning ring is slidably sleeved on the spray pipe, and the centers of the inner positioning ring and the outer positioning ring are located at the same point; The outer wall of the outer positioning ring is slidably connected to the inner wall of the shell; The two ends of the connecting rod are respectively connected to the outer positioning ring and the inner positioning ring; The separation gauze is in a ring shape and is located below the connecting rod; The inner circle of the separating gauze is connected to the outer wall of the inner positioning ring, and the outer circle of the separating gauze is connected to the inner wall of the outer positioning ring.

5. The liquid medicine mixing device for sewage treatment according to claim 4, characterized in that: The separation assembly also includes a plurality of regulating air bags; A plurality of regulating airbags are evenly arranged above the separating gauze, one end of the regulating airbag is connected to the outer positioning ring, and the other end of the regulating airbag is connected to the inner positioning ring; The bottom opening of the water pumping pipe abuts against the separating gauze, and the regulating airbag and the water pumping pipe are staggered.

6. The liquid medicine mixing device for sewage treatment according to claim 5, characterized in that: The separation assembly also includes a plurality of connecting air pipes; Two adjacent regulating airbags are connected via the connecting air pipe.

7. The liquid medicine mixing device for sewage treatment according to claim 6, characterized in that: An air control component is arranged in the shell, and the air control component includes an air pump and an air delivery pipe; The air pump is installed on the top of the shell, the input end of the air pump is connected to the inside of the shell, and the output end of the air pump is connected to the air delivery pipe; The air delivery pipe is a telescopic pipe, and one end of the air delivery pipe away from the air pump is connected to any one of the regulating air bags.

8. The liquid medicine mixing device for sewage treatment according to claim 7, characterized in that: The maximum length of the gas delivery pipe after extension is not less than the length of the spray pipe.

9. The liquid medicine mixing device for sewage treatment according to claim 7, characterized in that: A telescopic film is also provided inside the shell; The telescopic membrane is a circular tubular structure, and the spray pipe passes through the telescopic membrane; The bottom end of the telescopic membrane is sleeved on the inner positioning ring, and the top end of the telescopic membrane is connected to the inner top surface of the shell.

10. The liquid medicine mixing device for sewage treatment according to claim 9, characterized in that: A plurality of water leakage openings are arranged on the inner wall of the inner positioning ring.

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