Multi-point dosing device for sewage treatment and system thereof

Abstract

The invention relates to the technical field of sewage purification, in particular to a multi-point dosing device and system for sewage treatment.The dosing device comprises a dosing cabinet, a dosing device arranged in the dosing cabinet, a row of diverters communicated with one side of the dosing device and a neck pipe communicated with one end of the dosing device, and the dosing device comprises a transverse box for supplying sewage; the sewage purification device comprises a transverse box, a row of flow dividing tools arranged in the transverse box, a water changing adjusting shaft and a return control shaft which are used for driving the row of flow dividing tools, a medicament long box for supplying medicaments, and a swinging tool which is used for driving between the water changing adjusting shaft and the return control shaft. Therefore, the sewage stays in the purification pipe, and the medicament injected in the staying period is fully mixed and reacted with the sewage, so that the sewage is effectively purified and treated.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification, in particular to a multi-point dosing device and a system thereof for sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, medical care and catering. Sewage treatment plants and treatment stations are both sewage treatment units. The general goal of wastewater treatment is to remove suspended matter and improve oxygen consumption. Sometimes disinfection and further treatment are also carried out. The treatment of industrial wastewater focuses on the removal or transformation of oils, suspended matter, heavy metals and organic matter that hinders the operation of urban sewage treatment plants or has high residuals, as well as the adjustment of pH value. The process of sewage purification is to continuously inject chemicals into sewage. How to fully mix and react the chemicals with sewage, and how to accurately control the proportion of sewage and chemicals to avoid wasting resources has always been an innovative research and development direction in the field of sewage purification. For this reason, the present invention provides a multi-point dosing device and system for sewage treatment. Summary of the invention

[0003] The object of the present invention is to provide a multi-point dosing device and a system thereof for sewage treatment to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-point dosing device for sewage treatment, comprising a dosing cabinet, in which a dosing device, a row of diverters connected to one side of the dosing device, and a neck tube connected to one end of the dosing device are arranged. The dosing device comprises a horizontal box for supplying sewage, and a row of diverters arranged in the horizontal box, a water change adjustment shaft and a return control shaft for driving the row of diverters, a long agent box for supplying agents, and a swing device for driving between the water change adjustment shaft and the return control shaft. The water change adjustment shaft and the long agent box both have one end extending to the outside of the horizontal box, the other end of the water change adjustment shaft is connected to the swing device, one end of the diverter extends into the horizontal box, and the neck tube is fixedly connected to the horizontal box.

[0005] The diverter includes a purification tube with one end fixedly connected to the horizontal box, a drug delivery tube arranged in the middle of the purification tube, multiple branch tubes fixedly connected to the drug delivery tube, and a door plate distributed at the interface between the horizontal box and the purification tube. The door plate is in the shape of a ring plate, and multiple fan-shaped holes are evenly arranged on the ring plate. The drug delivery tube slides through the circular hole in the middle of the ring plate of the door plate.

[0006] The diverter also includes a long-barrel gear fixedly sleeved on the drug delivery tube, the long-barrel gear is distributed in the horizontal box, and the door plate is fixedly sealed at the port of the purification tube. The branch pipe is in the shape of a thin tube, and a row of drug delivery holes is opened on the side shell of the thin tube. The branch pipes fixed on the drug delivery tube are arranged in multiple groups, and each group of branch pipes is evenly arranged on the drug delivery tube.

[0007] The long medicine box includes a long box shell fixed on the inner wall of the horizontal box, a shutoff plate fixed to the long box shell, and a one-way valve spring connected to one side of the shutoff plate. The one-way valve spring controls the one-way flow of the medicine through the through hole set on the shutoff plate by swinging. A section of the medicine delivery tube slides through the through hole opened on one side of the long box shell, and one end of the long box shell passes through the shell of the horizontal box.

[0008] The swing device includes a tail column frame fixed on the inner wall of the cross box, a median axis and a tail rack supported on the tail column frame, a power barrel fixed at one end of the median axis, and a swing control column that establishes a transmission between the power barrel and the tail rack. One end of the water change adjustment shaft is connected to the outer gear ring arranged at one end of the power barrel through a fixed gear, and one end of the return control shaft is connected to the tail rack through a fixed gear.

[0009] The center axis is movably sleeved in a through hole opened on the tail column frame, one side of the tail rack passes through the plate hole opened on the tail column frame through a fixed slide plate, one end of the swing control column is hinged to the power barrel, and the other end is hinged to the tail rack.

[0010] The diverter includes a unit column frame fixed on the cross box, a branch worm and a unit shaft supported on the unit column frame, a unit disk fixed at one end of the unit shaft, and an L-shaped base plate for driving the drug delivery tube to move axially. The unit disk includes a disk body and an outer convex arc plate fixed at the edge of the disk body at one end. The unit column frame also supports the positioning of the water change adjustment shaft and the return control shaft. The other end of the unit shaft is connected by a fixed gear and a helical tooth meshing transmission arranged on the water change adjustment shaft, one end of the branch worm is connected by a fixed bevel gear and a ring bevel gear fixed on the water change adjustment shaft, and the helical teeth on the branch worm are connected by a long cylinder gear meshing transmission, the drug delivery tube is movably sleeved in a through hole opened at one end of the L-shaped base plate, and the other end of the L-shaped base plate slides through the inner hole of the flat cylinder arranged on the unit column frame, and the return control shaft is connected by a fixed cylinder gear and a row of teeth meshing transmission arranged on the L-shaped base plate.

[0011] The diverter also includes a circular door plate with a blocking door disc, two arc-shaped concave rail bodies for clamping and limiting the circular door plate, and a conversion component for establishing transmission between the circular door plate and the unit disc. The circular door plate includes a ring cylinder and a plurality of fan-shaped plates evenly fixed in a ring inside the ring cylinder, and each fan-shaped plate corresponds to a fan-shaped hole on the blocking door disc, and one side of the arc-shaped concave rail body is fixed to the inner wall of the horizontal box by setting a convex column.

[0012] The conversion assembly includes a positioning plate frame fixed on the cross box, a pressure shaft supported on the positioning plate frame, a travel gear fixed at one end of the pressure shaft, a cross plate rack arranged at the other end of the pressure shaft, a guide slide cylinder fixed on one side of the cross plate rack, and a reset spring piece sleeved on the guide slide cylinder. One end of the cross plate rack is in contact with the unit disk, and the outer convex arc plate on the unit disk pushes the cross plate rack once every circle, and the other end of the cross plate rack is meshed and connected with the shaft gear fixed on the pressure shaft through a row of teeth. One end of the guide slide cylinder slides through a column hole opened on the positioning plate frame, and the other end of the guide slide cylinder is fixed on a support plate arranged on the cross plate rack, and the reset spring piece is supported between the positioning plate frame and the cross plate rack, and the edge position of the annular cylinder of the circular door plate is meshed and connected with the travel gear through a plurality of convex teeth arranged in an arc shape.

[0013] A multi-point dosing system for sewage treatment includes a dosing central processor arranged in a dosing cabinet, the input end of the dosing central processor is electrically connected to the output end of a dosing switch, and the dosing central processor includes a sewage supply module, a drug supply module and a water exchange adjustment shaft module.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the sewage purification of the present invention is working, the reagent is continuously injected into a row of purification pipes, and the sewage is transported in turn in a row of purification pipes, so that the sewage has a residence period in the purification pipes, during which the injected reagent and sewage are fully mixed and reacted, ensuring that the sewage is effectively purified.

[0015] 2. The present invention realizes the coordinated operation of the alternating sewage conveying mechanism and the mixed drug dosing mechanism through the driving of the water-changing adjusting shaft. On the one hand, the water-changing adjusting shaft drives the unit shaft, and then triggers the conversion component to work through the unit disk. The circular door plate rotates to open the purification pipe channel. On the other hand, the water-changing adjusting shaft drives the branch worm, and the subsequent transmission causes the drug delivery pipe to rotate. At the same time, the water-changing adjusting shaft also drives the rocking device, causing the return control shaft to reciprocate, and then drives the drug delivery pipe axially to reciprocate through the L-shaped bottom plate. Under the triple drive control, the alternating sewage conveying mechanism can be effectively combined with the mixed drug dosing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 Schematic diagram of the diverter location.

[0018] Figure 3 This is a schematic diagram of the dosing device structure.

[0019] Figure 4 Schematic diagram of the diverter structure.

[0020] Figure 5 Schematic diagram of the position of the water exchange adjustment shaft.

[0021] Figure 6 It is a schematic diagram of the structure of a long medicine box.

[0022] Figure 7 It is a schematic diagram of the swing structure.

[0023] Figure 8 This is a schematic diagram of the diversion structure.

[0024] Fig. 9 This is a schematic diagram of the return control axis position.

[0025] Fig.10 This is a schematic diagram of the position of the long cylinder gear.

[0026] Fig.11 Schematic diagram of the conversion component structure.

[0027] Fig.12 This is a schematic diagram of the position of the round door panel.

[0028] Fig.13 This is a schematic diagram of the door plate structure.

[0029] Fig.14 This is the block diagram of the dosing system.

[0030] In the figure: dosing cabinet 1, dosing device 2, diverter 3, swing device 4, cross box 5, diverter 6, water change adjustment shaft 7, return control shaft 8, long medicine box 9, neck tube 10, branch pipe 11, purification pipe 12, medicine delivery pipe 13, door plate 14, long cylinder gear 15, intercepting plate 16, one-way valve spring 17, long box shell 18, power barrel 19, middle axis 20, swing control column 21, tail column frame 22, tail rack 23, arc-shaped concave track body 24, round door plate 25, conversion assembly 26, L-shaped bottom plate 27, branch worm 28, unit column frame 29, unit shaft 30, unit plate 31, pressure shaft 32, positioning plate frame 33, guide slide 34, reset spring 35, cross plate rack 36, travel gear 37. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the technical solutions in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 14The present invention provides a technical solution: a multi-point dosing device for sewage treatment, comprising a dosing cabinet 1, in which a dosing device 2, a row of diverters 3 connected to one side of the dosing device 2, and a neck tube 10 connected to one end of the dosing device 2 are arranged. The dosing device 2 includes a horizontal box 5 for supplying sewage, and a row of diverters 6 arranged in the horizontal box 5, a water change adjustment shaft 7 and a return control shaft 8 for driving the row of diverters 6, a long medicine box 9 for supplying medicine, and a swing device 4 driven between the water change adjustment shaft 7 and the return control shaft 8. One end of the water change adjustment shaft 7 and the long medicine box 9 extend to the outside of the horizontal box 5, and the other end of the water change adjustment shaft 7 is connected to the swing device 4 in a transmission manner. One end of the diverter 3 extends into the horizontal box 5, and the neck tube 10 is fixedly connected to the horizontal box 5.

[0033] refer to Figure 4 It is understood that the diverter 3 includes a purification pipe 12 with one end fixedly connected to the horizontal box 5, a drug delivery pipe 13 arranged in the middle of the purification pipe 12, a plurality of branch pipes 11 fixedly connected to the drug delivery pipe 13, and a door plate 14 distributed at the interface between the horizontal box 5 and the purification pipe 12. The door plate 14 is in the shape of a ring plate, and a plurality of fan-shaped holes are evenly arranged on the ring plate. The drug delivery pipe 13 slides through the circular hole in the middle of the ring plate of the door plate 14, and the other end of the purification pipe 12 is bent upward, and the sewage injected into the purification pipe 12 will be retained and then mixed with the medicine.

[0034] The diverter 3 also includes a long cylinder gear 15 fixedly sleeved on the drug delivery tube 13, the long cylinder gear 15 is distributed in the horizontal box 5, the door plate 14 is fixedly blocked at the port of the purification tube 12, the branch pipe 11 is in the shape of a thin tube, and a row of drug delivery holes is opened on the shell of the thin tube side, the branch pipes 11 fixed on the drug delivery tube 13 are arranged in multiple groups, and each group of branch pipes 11 is evenly arranged on the drug delivery tube 13, the drug delivery tube 13 can rotate and also move axially, so that the drug delivery tube 13 and the branch pipe 11 cooperate to evenly stir the sewage in the purification tube 12, so that the sewage and the medicine are fully mixed.

[0035] refer to Figure 6 It is understood that the medicine long box 9 includes a long box shell 18 fixed on the inner wall of the horizontal box 5, a shutoff plate 16 fixed to the long box shell 18, and a one-way valve spring 17 connected to one side of the shutoff plate 16. The one-way valve spring 17 controls the one-way flow of the medicine through the through hole set on the shutoff plate 16 by swinging. A section of the drug delivery tube 13 slides through the through hole opened on the shell of one side of the long box shell 18. One end of the long box shell 18 penetrates the shell of the horizontal box 5. The long box shell 18 is externally connected to the medicine supply mechanism in the prior art. The medicine is injected into the long box shell 18, then passes through the shutoff plate 16, and then dispersedly transported through a row of drug delivery tubes 13 on one side. The medicine injected into the drug delivery tube 13 is then diffused into the sewage through the branch pipe 11. During the axial movement and rotation of the drug delivery tube 13, the drug delivery tube 13 and the long box shell 18 are always kept in a connected state, so that the drug administration and stirring in the purification tube 12 are coordinated and the medicine can fully react with the sewage.

[0036] refer to Figure 7 It is understood that the swing device 4 includes a tail column frame 22 fixed on the inner wall of the cross box 5, a center axis 20 and a tail rack 23 supported on the tail column frame 22, a power barrel 19 fixed at one end of the center axis 20, and a swing control column 21 that establishes a transmission between the power barrel 19 and the tail rack 23, one end of the water change adjustment shaft 7 is connected to the outer gear ring arranged at one end of the power barrel 19 through a fixed gear, and one end of the return control shaft 8 is connected to the tail rack 23 through a fixed gear.

[0037] The center axis 20 is movably sleeved in a through hole opened on the tail column frame 22, and one side of the tail rack 23 passes through the plate hole opened on the tail column frame 22 through a fixed slide plate. One end of the swing control column 21 is hinged to the power barrel 19, and the other end is hinged to the tail rack 23.

[0038] The function of the swing device 4 is to convert the directional rotation of the water change adjustment shaft 7 into the reciprocating rotation of the return control shaft 8. Specifically, the water change adjustment shaft 7 transmits the power barrel 19, and the power barrel 19 drives the swing control column 21 during the directional rotation, and then drives the tail rack 23 to continuously rise and fall, and then causes the return control shaft 8 to reciprocate through the gear.

[0039] refer to Figure 8 It is understood that the flow divider 6 includes a unit column frame 29 fixed on the horizontal box 5, a branch worm 28 and a unit shaft 30 supported on the unit column frame 29, a unit disk 31 fixed at one end of the unit shaft 30, and an L-shaped bottom plate 27 that drives the drug delivery tube 13 to move axially. The unit disk 31 includes a disk body and an outer convex arc plate fixed at one end of the disk body edge. The unit column frame 29 also supports the positioning water change adjustment shaft 7 and the return control shaft 8. The other end of the unit shaft 30 is connected to the helical gear meshing transmission set on the water change adjustment shaft 7 through a fixed gear, and one end of the branch worm 28 is connected to the helical gear meshing transmission set on the fixed bevel gear and The annular bevel gear fixed on the water exchange regulating shaft 7 is meshed and connected for transmission, and the spiral teeth on the branch worm 28 and the long cylinder gear 15 are meshed and connected for transmission, the medicine delivery tube 13 is movably sleeved in the through hole opened at one end of the L-shaped bottom plate 27, and the other end of the L-shaped bottom plate 27 slides through the flat cylinder inner hole set on the unit column frame 29, and the return control shaft 8 is meshed and connected for transmission through a row of teeth set on the L-shaped bottom plate 27 through the fixed cylinder gear. The unit shaft 30, the branch worm 28, the water exchange regulating shaft 7 and the return control shaft 8 are respectively movably sleeved in a plurality of different through holes opened on the unit column frame 29.

[0040] The diverter 6 also includes a circular door plate 25 for blocking the door disc 14, two arc-shaped concave rail bodies 24 for clamping and limiting the circular door plate 25, and a conversion component 26 for establishing transmission between the circular door plate 25 and the unit disc 31. The circular door plate 25 includes a ring cylinder and a plurality of fan-shaped plates evenly fixed in a ring inside the ring cylinder, and each fan-shaped plate corresponds to a fan-shaped hole on the blocking door disc 14. One side of the arc-shaped concave rail body 24 is fixed to the inner wall of the horizontal box 5 by setting a convex column.

[0041] The conversion assembly 26 includes a positioning plate frame 33 fixed on the transverse box 5, a pressure shaft 32 supported on the positioning plate frame 33, a travel gear 37 fixed at one end of the pressure shaft 32, a transverse plate rack 36 set at the other end of the pressure shaft 32, a guide slide 34 fixed at one side of the transverse plate rack 36, and a reset spring 35 sleeved on the guide slide 34. One end of the transverse plate rack 36 is in contact with the unit disk 31. The outer convex arc plate on the unit disk 31 pushes the transverse plate rack 36 once every circle. The other end of the transverse plate rack 36 By setting a row of teeth and a shaft gear meshing transmission connection fixed on the pressure shaft 32, one end of the guide slide 34 slides through the column hole opened on the positioning plate frame 33, and the other end of the guide slide 34 is fixed on the support plate set on the cross plate rack 36, and the reset spring 35 is supported between the positioning plate frame 33 and the cross plate rack 36, and the edge position of the annular cylinder of the circular door plate 25 is meshed and transmitted with the travel gear 37 through a plurality of convex teeth arranged in an arc shape, and the pressure shaft 32 is movably sleeved in the through hole opened on the positioning plate frame 33.

[0042] A multi-point dosing system for sewage treatment includes a dosing central processor arranged in a dosing cabinet 1, the input end of the dosing central processor is electrically connected to the output end of a dosing switch, and the dosing central processor includes a sewage supply module, a drug supply module and a water exchange adjustment shaft module. The sewage supply module controls the sewage supply mechanism, and the sewage in the sewage supply mechanism is injected into the horizontal box 5 through the neck tube 10. The drug supply module controls the drug supply mechanism and controls the drug to be injected into the long box shell 18. The water exchange adjustment shaft module controls the prior art motor, and the motor drives the water exchange adjustment shaft 7. Through subsequent transmission, a row of purification pipes 12 are used to transport sewage in turn.

[0043] The overall process of multi-point dosing is that the sewage in the neck tube 10 is injected into the horizontal box 5, and then discharged into each purification pipe 12 in turn, that is, the sewage is intermittently injected into the single purification pipe 12, and the sewage injected into the purification pipe 12 will be retained for a period of time. During this period of time, the purification agent is continuously injected into the purification pipe 12 to make the agent and the sewage fully mixed. The water after purification will be directly squeezed out by the sewage injected into the purification pipe 12 next time, and the sewage injected next time will be purified by adding drugs. This cycle continues, so that the sewage is thoroughly pressurized and purified.

[0044] The sewage in the horizontal box 5 is discharged into the purification pipe 12, and the entrance needs to be opened. Specifically, the water change adjustment shaft 7 rotates to drive the unit shaft 30 to rotate, and then the unit disk 31 rotates slowly. In each rotation of the unit disk 31, there will be a stage where the outer convex arc plate on the unit disk 31 supports the horizontal plate rack 36, and the horizontal plate rack 36 translates to drive the pressure shaft 32 to rotate, and then the travel gear 37 rotates to drive the circular door plate 25. The fan-shaped plate on the circular door plate 25 swings and no longer blocks the fan-shaped hole on the door plate 14. In this way, the purification pipe 12 and the horizontal box 5 are connected, and the sewage in the horizontal box 5 will be discharged to the clean port with the port opened. In the purification pipe 12, the present invention has a row of diverters 6, and the directions and positions of the outer convex arc plates on the unit disk 31 in each diverter 6 are different. Although all the unit disks 31 rotate synchronously, the timing of the outer convex arc plates pushing the horizontal plate rack 36 is different, so that the timing of opening the ports of a row of purification pipes 12 is different, and a row of purification pipes 12 are injected with sewage in turn, and the injection of chemicals into each purification pipe 12 is continuous. In this way, a section of sewage is injected into a single purification pipe 12, and the chemicals are continuously injected into the sewage. After the chemicals and sewage are fully mixed, the next section of sewage replaces the sewage that has been purified and mixed.

[0045] During the process of adding medicine inside the purification pipe 12, the medicine delivery pipe 13 continuously rotates and reciprocates axially to drive the branch pipe 11. The branch pipe 11 will fully stir the sewage inside the purification pipe 12 to make the sewage and the medicine fully mixed and reacted. The medicine delivery pipe 13 rotates because the water change adjustment shaft 7 drives the branch worm 28. The rotation of the branch worm 28 drives the long cylinder gear 15. The long cylinder gear 15 and the medicine delivery pipe 13 continue to rotate synchronously. The axial reciprocating movement of the medicine delivery pipe 13 is because the return control shaft 8 reciprocates, thereby driving the L-shaped bottom plate 27. The reciprocating movement of the L-shaped bottom plate 27 drives the axial reciprocating movement of the medicine delivery pipe 13.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-point dosing device for sewage treatment, comprising a dosing cabinet (1), characterized in that: The dosing cabinet (1) is provided with a dosing device (2), a row of diverters (3) connected to one side of the dosing device (2), and a neck tube (10) connected to one end of the dosing device (2). The dosing device (2) comprises a horizontal box (5) for supplying sewage, a row of diverters (6) arranged in the horizontal box (5), a water change adjustment shaft (7) and a return control shaft (8) for driving the row of diverters (6), a long medicine box (9) for supplying medicine, and a swing device (4) for driving between the water change adjustment shaft (7) and the return control shaft (8). One end of the water change adjustment shaft (7) and the long medicine box (9) extend to the outside of the horizontal box (5), and the other end of the water change adjustment shaft (7) is in driving connection with the swing device (4). One end of the diverter (3) extends into the horizontal box (5), and the neck tube (10) is fixedly connected to the horizontal box (5).

2. A multi-point dosing device for sewage treatment according to claim 1, characterized in that: The flow divider (3) comprises a purification tube (12) having one end fixedly connected to the transverse box (5), a drug delivery tube (13) arranged in the middle of the purification tube (12), a plurality of branch tubes (11) fixedly connected to the drug delivery tube (13), and a door plate (14) distributed at the interface between the transverse box (5) and the purification tube (12), wherein the door plate (14) is in the shape of a ring plate, and a plurality of fan-shaped holes are evenly arranged on the ring plate, and the drug delivery tube (13) slides through the circular hole in the middle of the ring plate of the door plate (14).

3. A multi-point dosing device for sewage treatment according to claim 2, characterized in that: The flow divider (3) further comprises a long-barrel gear (15) fixedly sleeved on the drug delivery tube (13), the long-barrel gear (15) being distributed in the horizontal box (5), the door plate (14) being fixedly sealed at the port of the purification tube (12), the branch tube (11) being in the shape of a thin tube, and a row of drug delivery holes being provided on the shell body on the side of the thin tube, the branch tubes (11) fixed on the drug delivery tube (13) being arranged in a plurality of groups, and each group of branch tubes (11) being evenly arranged on the drug delivery tube (13).

4. A multi-point dosing device for sewage treatment according to claim 2, characterized in that: The medicine long box (9) comprises a long box shell (18) fixed on the inner wall of the transverse box (5), a shutoff plate (16) fixed to the long box shell (18), and a one-way valve spring (17) connected to one side of the shutoff plate (16). The one-way valve spring (17) controls the medicine to flow in a one-way direction through a through hole provided on the shutoff plate (16) by swinging. A section of the medicine delivery tube (13) slides through a through hole provided on one side of the shell of the long box shell (18), and one end of the long box shell (18) penetrates the shell of the transverse box (5).

5. The multi-point dosing device for sewage treatment according to claim 1 is characterized in that: The swing device (4) comprises a tail column frame (22) fixed on the inner wall of the cross box (5), a center axis (20) and a tail rack (23) supported on the tail column frame (22), a power barrel (19) fixed at one end of the center axis (20), and a swing control column (21) for establishing transmission between the power barrel (19) and the tail rack (23); one end of the water exchange adjustment shaft (7) is meshed and connected to an outer gear ring provided at one end of the power barrel (19) through a fixed gear, and one end of the return control shaft (8) is meshed and connected to the tail rack (23) through a fixed gear.

6. A multi-point dosing device for sewage treatment according to claim 5, characterized in that: The center axis (20) is movably sleeved in a through hole provided on the tail column frame (22); one side of the tail rack (23) passes through a plate hole provided on the tail column frame (22) via a fixed slide plate; one end of the swing control column (21) is hinged to the power barrel (19), and the other end is hinged to the tail rack (23).

7. A multi-point dosing device for sewage treatment according to claim 3, characterized in that: The flow divider (6) comprises a unit column frame (29) fixed on the transverse box (5), a branch worm (28) and a unit shaft (30) supported on the unit column frame (29), a unit disk (31) fixed at one end of the unit shaft (30), and an L-shaped bottom plate (27) for driving the drug delivery tube (13) to move axially, the unit disk (31) comprising a disk body and an outer convex arc plate fixed at one end of the disk body edge, the unit column frame (29) also supports the positioning water exchange adjustment shaft (7) and the return control shaft (8), the other end of the unit shaft (30) is connected to the water exchange adjustment shaft (7) through a fixed gear and the water exchange adjustment shaft (8) The branch worm (28) is connected to the water-changing regulating shaft (7) by a helical tooth meshing transmission connection, one end of the branch worm (28) is connected to the annular bevel gear fixed on the water-changing regulating shaft (7) by a fixed bevel gear, and the helical teeth on the branch worm (28) are connected to the long cylinder gear (15) by a meshing transmission connection, the drug delivery tube (13) is movably sleeved in a through hole opened at one end of the L-shaped bottom plate (27), and the other end of the L-shaped bottom plate (27) slides through the inner hole of the flat cylinder provided on the unit column frame (29), and the return control shaft (8) is connected to the L-shaped bottom plate (27) by a fixed cylinder gear and a row of teeth provided on the L-shaped bottom plate (27) by a meshing transmission connection.

8. A multi-point dosing device for sewage treatment according to claim 7, characterized in that: The flow divider (6) further comprises a round door plate (25) having a blocking door disc (14), two arc-shaped concave rail bodies (24) for clamping the limiting round door plate (25), and a conversion assembly (26) for establishing transmission between the round door plate (25) and the unit disc (31), wherein the round door plate (25) comprises an annular tube and a plurality of fan-shaped plates evenly fixedly arranged in an annular tube, and each fan-shaped plate corresponds to a fan-shaped hole on the blocking door disc (14), and one side of the arc-shaped concave rail body (24) is fixed to the inner wall of the horizontal box (5) by providing a convex column.

9. A multi-point dosing device for sewage treatment according to claim 8, characterized in that: The conversion assembly (26) comprises a positioning plate frame (33) fixed on the transverse box (5), a pressure shaft (32) supported on the positioning plate frame (33), a travel gear (37) fixed at one end of the pressure shaft (32), a transverse plate rack (36) provided at the other end of the pressure shaft (32), a guide slide cylinder (34) fixed at one side of the transverse plate rack (36), and a reset spring (35) sleeved on the guide slide cylinder (34), one end of the transverse plate rack (36) is in contact with the unit disk (31), and the outer convex arc plate on the unit disk (31) pushes the unit disk (31) every time it rotates around. The horizontal plate rack (36) is once, and the other end of the horizontal plate rack (36) is meshed and connected to the shaft gear fixed on the pressure shaft (32) by setting a row of teeth. One end of the guide slide (34) slides through the column hole opened on the positioning plate frame (33), and the other end of the guide slide (34) is fixed on the support plate set on the horizontal plate rack (36), and the reset spring (35) is supported between the positioning plate frame (33) and the horizontal plate rack (36). The edge position of the ring cylinder of the round door plate (25) is meshed and connected to the travel gear (37) through a plurality of convex teeth arranged in an arc shape.

10. A multi-point dosing system for sewage treatment, used for the multi-point dosing device for sewage treatment as claimed in claim 1, characterized in that: It comprises a dosing central processor arranged in a dosing cabinet (1), the input end of the dosing central processor is electrically connected to the output end of a dosing switch, and the dosing central processor comprises a sewage supply module, a medicine supply module and a water exchange adjustment shaft module.

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