A sewage treatment phosphorus removal agent adding device

Abstract

The present application provides a kind of sewage treatment phosphorus removal agent dosing device, it is related to sewage treatment field, including: shell, phosphorus removal agent dosing assembly and stepper motor;The inner side of the shell is also connected with lower bracing plate, and the end of lower bracing plate is provided with inclined landslide, and middle is fixed with limit support ring, and the outer side of the gap of limit support ring is provided with arc tooth segment;The phosphorus removal agent dosing assembly includes circular support cylinder, cross type connecting rod, square connecting rod and circular clamping seat;The stepper motor is installed on the lower baffle, and the motor shaft bottom end of stepper motor is inserted into the hexagonal socket in the top end of circular clamping seat by hexagonal column.The stepper motor drives phosphorus removal agent dosing assembly to rotate step by step, and the rapid ration of phosphorus removal agent is realized by the aid of ball barrel structure, the transfer and dosing from storage cavity to treatment cavity, and the stirring blade is driven to fully stir and mix phosphorus removal agent and sewage during dosing process.The problem that it needs to be added gradually and the operation is complicated when ration dosing and weighing in prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment phosphorus removal agent dosing device. Background Technology

[0002] Phosphorus is one of the main factors leading to eutrophication of water bodies. With the extensive use of pesticides, fertilizers, and phosphorus-containing detergents, the nitrogen and phosphorus content in water bodies continues to increase, causing rapid proliferation of algae and plankton in rivers and lakes, resulting in water quality deterioration and serious damage to the ecological environment. Therefore, in the process of wastewater treatment, the addition of phosphorus removal agents is a key step in achieving phosphorus removal, and in practical applications, it is often necessary to precisely control the dosage of phosphorus removal agents.

[0003] In existing technologies, the quantitative addition of phosphorus removal agents usually adopts the weighing method, that is, the phosphorus removal agent is first weighed quantitatively, and then the weighed phosphorus removal agent is added to the wastewater. However, this method requires repeated and gradual addition of phosphorus removal agent during the weighing process to gradually approach the target dosage, which is not only cumbersome and time-consuming, but also makes it difficult to guarantee the accuracy and convenience of the addition. Summary of the Invention

[0004] To address the problems in the background art, the present invention provides a wastewater treatment phosphorus removal agent dosing device, which uses a stepper motor to drive the phosphorus removal agent dosing component to rotate in a step-by-step manner. The device utilizes a ball-and-cylinder structure to achieve rapid quantitative dispensing of the phosphorus removal agent and its transfer and dosing from the storage chamber to the wastewater treatment chamber. Simultaneously, during the dosing process, the device drives the stirring blades to fully mix the phosphorus removal agent and the wastewater.

[0005] The present invention provides a wastewater treatment phosphorus removal agent dosing device, specifically comprising: a shell, a phosphorus removal agent dosing component, and a stepper motor;

[0006] The inner side of the shell is provided with a sewage treatment chamber. At one end of the upper side of the sewage treatment chamber, there is a phosphorus removal agent storage chamber. The inner side of the shell is also provided with two sets of opposing upper support plates, and partitions are fixed to them by bolts. Sewage input pipe and air outlet pipe are respectively inserted through the two sets of partitions. A discharge pipe is also inserted through one side of the lower end of the shell. Control valves are installed on the sewage input pipe, air outlet pipe and discharge pipe respectively.

[0007] The shell has an observation window on one side and a lower support plate connected to the inside. The lower support plate is located below the dephosphorizing agent storage chamber. One end of the lower support plate has a sloping ramp, and a limiting support ring is fixed in the middle. An arc-shaped toothed segment is provided on the outside of the notch of the limiting support ring, and the arc-shaped toothed segment is also fixed to the upper end of the sloping ramp.

[0008] The phosphorus removal agent dosing assembly includes a circular support cylinder, a cross-shaped connecting rod, a square connecting rod, and a circular retainer.

[0009] The cross-shaped connecting rod is placed in the arc groove A of the circular support cylinder, and the circular support cylinder is placed on the lower support plate. A square block is connected in the middle of the cross-shaped connecting rod, and the square connecting rod passes downward through the square through hole B on the square block and the square through hole A in the middle of the inner side of the circular support cylinder, and is locked on the stepped structure at the top side of the square through hole B. The circular card seat is fastened to the upper side of the cross-shaped connecting rod through the arc groove B and is connected to the circular support cylinder by bolts.

[0010] The stepper motor is mounted on the lower partition, and the bottom end of the stepper motor shaft is inserted into the hexagonal socket at the top of the circular card holder through a hexagonal post.

[0011] Furthermore, the wastewater treatment chamber is also equipped with a first stirring shaft and a second stirring shaft. The bottom ends of the first stirring shaft and the second stirring shaft are respectively inserted into the insert of the wastewater treatment chamber, and two sets of stirring blades are respectively installed. The top end of the first stirring shaft is inserted into the lower partition and is connected to the motor shaft of the stepper motor. The upper end of the second stirring shaft is inserted into the lower support plate, and the bottom end of the square connecting rod is also inserted into the square hole on the top side of the second stirring shaft.

[0012] Furthermore, a square conical pad is provided at the bottom of the inner side of the descaling agent storage chamber. The material inlet B on the square conical pad is vertically opposite to the material inlet A in the middle of the bottom side of the descaling agent storage chamber, and the four inner end faces of the square conical pad are inclined downward towards the material inlet B.

[0013] Furthermore, the phosphorus removal agent dosing assembly also includes a tilting shaft and an arc-shaped baffle;

[0014] A bevel gear is installed on the flipping shaft, a square fixing block is fixed to the inner end, and a ball cylinder is fixedly connected to the outer end. The bottom side of the square fixing block is attached to the limiting support ring, and a square disassembly block is connected to the top side by bolts. The square fixing block and the square disassembly block are respectively rotated and locked to the circular locking plate at the outer end of the cross-shaped connecting rod through the slot. There are four sets of arc-shaped baffles, which are respectively located between the ball cylinders. Two sets of bottom support rods are connected to the bottom side of the arc-shaped baffles, and the bottom support rods are connected to the arc-shaped rods between the cross-shaped connecting rods.

[0015] Furthermore, the two ends of the ball tube are respectively provided with arc-shaped openings, which are respectively attached to the outer wall of the ball tube, and the center of the ball tube is on the same straight line as the flipping axis.

[0016] Furthermore, the opening on the top side of the ball cylinder is a horizontal structure and is flush with the surface of the arc-shaped baffle. The top opening of a set of ball cylinders is attached to the bottom of the material inlet A, and the diagonal length of the material inlet A is less than the inner diameter of the top opening of the ball cylinder.

[0017] Furthermore, when the bottom end of the square fixing block is completely disengaged from the limiting support ring and is on the notch side, the bevel gear meshes with the arc-shaped tooth segment, and when the bevel gear is completely disengaged from the arc-shaped tooth segment, the flipping shaft rotates exactly 360°, and the square fixing block contacts the other side of the notch of the limiting support ring.

[0018] The wastewater treatment phosphorus removal agent dosing device provided by the present invention has the following beneficial effects:

[0019] This invention uses a stepper motor to drive the phosphorus removal agent dosing component to rotate in a stepping manner. The spherical structure enables rapid quantitative dispensing of the phosphorus removal agent and its transfer and dosing from the storage chamber to the wastewater treatment chamber. At the same time, the stirring blades drive the stirring blades to fully mix the phosphorus removal agent and the wastewater during the dosing process.

[0020] In addition, a phosphorus removal agent dosing component is installed. The phosphorus removal agent in the phosphorus removal agent storage chamber falls into the ball cylinder through the material port A, which can realize rapid quantitative dispensing of phosphorus removal agent without the need for step-by-step weighing. This simplifies the cumbersome process of step-by-step weighing required in the existing technology. Moreover, a stepper motor drives the phosphorus removal agent dosing component to rotate 90° in a step-by-step manner, so that the ball cylinder on the bottom side of the phosphorus removal agent storage chamber rotates out from the bottom side of the phosphorus removal agent storage chamber, and another set of ball cylinders rotates to the bottom side of the material port A. During this process, the bottom side of the material port A is blocked by an arc-shaped baffle. At the same time, the square fixing block on a set of flipping shafts disengages from the limiting support ring to the notch side, so that the bevel gear meshes with the arc-shaped tooth segment and moves to the middle of the arc-shaped tooth segment. This causes the set of ball cylinders to rotate 180° on the upper side of the inclined slope, pouring out the phosphorus removal agent inside, which then slides down the inclined slope into the sewage treatment chamber.

[0021] In addition, by setting up a first stirring shaft and a second stirring shaft, when the stepper motor drives the phosphorus removal agent dosing component to rotate step by step, it can also drive the first stirring shaft and the second stirring shaft to rotate. The stirring blades on the first stirring shaft and the second stirring shaft can be used to stir the sewage in the sewage treatment chamber, accelerate the mixing of phosphorus removal agent and sewage, and improve the sewage treatment efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0023] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0024] In the attached diagram:

[0025] Figure 1 A schematic diagram of the overall structure of the present invention is shown;

[0026] Figure 2 The present invention is shown Figure 1 A schematic diagram of the front structure of the middle shell after vertical sectioning.

[0027] Figure 3 The present invention is shown Figure 2 A schematic diagram of the structure after vertically cutting the right side of the sewage treatment chamber and the right side of the phosphorus removal agent storage chamber after disassembling the two sets of partitions, the second stirring shaft, the stepper motor, etc.

[0028] Figure 4 The present invention is shown Figure 3 Enlarged structural diagram at point A in the middle;

[0029] Figure 5 The present invention is shown Figure 3 A schematic diagram of the structure when the circular card holder and the square connecting rod are removed upwards;

[0030] Figure 6 The present invention is shown Figure 5 Enlarged structural diagram at point B;

[0031] Figure 7 This invention shows a schematic diagram of the phosphorus removal agent dosing assembly structure after the circular card holder and square connecting rod have been disassembled.

[0032] Figure 8 The present invention is shown Figure 7 Schematic diagram of the phosphorus removal agent dosing assembly after the disassembly of the medium circular support cylinder;

[0033] Figure 9 The present invention is shown Figure 5 A schematic diagram of the disassembled phosphorus removal agent dosing assembly.

[0034] Figure 10 A schematic diagram of the square cone pad in this invention is shown;

[0035] Figure 11 A schematic diagram of the flip shaft in this invention is shown;

[0036] Figure 12 A schematic diagram of the arc-shaped baffle in this invention is shown.

[0037] List of reference numerals in the attached diagram:

[0038] 1. Shell; 101. Wastewater treatment chamber; 1011. First stirring shaft; 1012. Second stirring shaft; 102. Phosphorus removal agent storage chamber; 1021. Inlet A; 1022. Square conical pad; 10221. Inlet B; 103. Upper support plate; 104. Partition plate; 105. Wastewater inlet pipe; 106. Gas outlet pipe; 107. Discharge pipe; 108. Observation window; 109. Lower support plate; 1091. Inclined slope; 1092. Limiting support ring; 1093. Arc-shaped toothed segment; 2. Phosphorus removal agent dosing assembly; 201. Circular 2011, Square perforation A; 2012, Arc groove A; 202, Cross-shaped connecting rod; 2021, Square perforation B; 2022, Arc rod; 2023, Circular clamping plate; 203, Square connecting rod; 204, Circular clamping seat; 2041, Hexagonal socket; 205, Flip shaft; 2051, Bevel gear; 2052, Square fixing block; 2053, Square disassembly block; 2054, Ball cylinder; 206, Arc baffle; 2061, Bottom support rod; 2062, Arc notch; 3, Stepper motor. Detailed Implementation

[0039] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0040] Example 1: Please refer to Figures 1 to 12 :

[0041] This invention proposes a wastewater treatment phosphorus removal agent dosing device, comprising: a shell 1, a phosphorus removal agent dosing component 2, and a stepper motor 3;

[0042] The inner side of the shell 1 is provided with a sewage treatment chamber 101. The upper end of the sewage treatment chamber 101 is spaced apart by a phosphorus removal agent storage chamber 102. The inner side of the shell 1 is also provided with two sets of opposing upper support plates 103, and partition plates 104 are fixed to them by bolts. Sewage inlet pipe 105 and air outlet pipe 106 are respectively inserted through the two sets of partition plates 104. A discharge pipe 107 is also inserted through the lower end of the shell 1. Control valves are respectively installed on the sewage inlet pipe 105, air outlet pipe 106 and discharge pipe 107.

[0043] An observation window 108 is provided on one side of the shell 1, and a lower support plate 109 is connected to the inner side. The lower support plate 109 is located below the phosphorus removal agent storage cavity 102. One end of the lower support plate 109 is provided with a sloping ramp 1091, and a limiting support ring 1092 is fixed in the middle. An arc-shaped toothed segment 1093 is provided on the outer side of the notch of the limiting support ring 1092. The arc-shaped toothed segment 1093 is also fixed to the upper end of the sloping ramp 1091.

[0044] The phosphorus removal agent dosing assembly 2 includes a circular support cylinder 201, a cross-shaped connecting rod 202, a square connecting rod 203, and a circular mounting base 204;

[0045] The cross-shaped connecting rod 202 is placed in the arc groove A2012 of the circular support cylinder 201, and the circular support cylinder 201 is placed on the lower support plate 109. A square block is connected in the middle of the cross-shaped connecting rod 202, and the square connecting rod 203 passes downward through the square through hole B2021 on the square block and the square through hole A2011 in the middle of the inner side of the circular support cylinder 201, and is locked on the stepped structure at the top side of the square through hole B2021. The circular card seat 204 is fastened to the upper side of the cross-shaped connecting rod 202 through the arc groove B, and is connected to the circular support cylinder 201 by bolts.

[0046] The stepper motor 3 is mounted on the lower partition 104, and the bottom end of the motor shaft of the stepper motor 3 is inserted into the hexagonal socket 2041 at the top of the circular card holder 204 through a hexagonal post.

[0047] In embodiments of the present invention, such as Figure 2 , Figure 6 and Figure 9 As shown, the wastewater treatment chamber 101 is also equipped with a first stirring shaft 1011 and a second stirring shaft 1012. The bottom ends of the first stirring shaft 1011 and the second stirring shaft 1012 are respectively inserted into the inserts of the wastewater treatment chamber 101, and two sets of stirring blades are respectively installed. The top end of the first stirring shaft 1011 is inserted into the lower partition 104 and is connected to the motor shaft of the stepper motor 3. The upper end of the second stirring shaft 1012 is inserted into the lower support plate 109, and the bottom end of the square connecting rod 203 is also inserted into the square hole on the top side of the second stirring shaft 1012. When the stepper motor 3 drives the phosphorus removal agent dosing component 2 to rotate stepwise, it can also drive the first stirring shaft 1011 and the second stirring shaft 1012 to rotate, and use the stirring blades on the first stirring shaft 1011 and the second stirring shaft 1012 to stir the wastewater in the wastewater treatment chamber 101, accelerate the mixing of phosphorus removal agent and wastewater, and improve the wastewater treatment efficiency.

[0048] In embodiments of the present invention, such as Figure 1 and Figure 10 As shown, a square cone pad 1022 is also provided at the bottom of the inner side of the dephosphorizing agent storage chamber 102. The material inlet B10221 on the square cone pad 1022 is vertically opposite to the material inlet A1021 in the middle of the bottom side of the dephosphorizing agent storage chamber 102. The four inner end faces of the square cone pad 1022 are inclined downward towards the material inlet B10221, so that the dephosphorizing agent in the dephosphorizing agent storage chamber 102 can flow to the material inlet B10221 along the inclined structure of the inner side of the square cone pad 1022.

[0049] In embodiments of the present invention, such as Figures 3 to 8As shown, the phosphorus removal agent dosing assembly 2 also includes a tilting shaft 205 and an arc-shaped baffle 206. A bevel gear 2051 is installed on the tilting shaft 205, a square fixing block 2052 is fixed to the inner end, and a ball cylinder 2054 is fixedly connected to the outer end. The bottom side of the square fixing block 2052 is attached to the limiting support ring 1092, and the top side is connected to a square disassembly block 2053 by bolts. The square fixing block 2052 and the square disassembly block 2053 are respectively rotated and locked to the circular locking plate 2023 at the outer end of the cross-shaped connecting rod 202 through the slot. There are four sets of arc-shaped baffles 206, which are respectively located between the ball cylinders 2054. Two sets of bottom support rods 2061 are connected to the bottom side of the arc-shaped baffle 206, and the bottom support rods 2061 are connected to the arc-shaped rods 2022 between the cross-shaped connecting rods 202 and the ball cylinder 2054. Arc-shaped openings 2062 are provided at both ends of the ball cylinder 2054, and they are respectively attached to the outer wall of the ball cylinder 2054. The center of the ball cylinder 2054 and the flipping shaft 205 are on the same straight line. When the bottom end of the square fixing block 2052 is completely disengaged from the limiting support ring 1093 and is on the notch side, the bevel gear 2051 meshes with the arc-shaped tooth segment 1092. When the bevel gear 2051 is completely disengaged from the arc-shaped tooth segment 1092, the flipping shaft 205... 5. The square fixing block 2052 rotates exactly 360°, and it contacts the other side of the notch of the limiting support ring 1093. When the dephosphorizing agent dosing component 2 rotates 90° step by step with the stepper motor 3, the ball cylinder 2054 on the bottom side of the dephosphorizing agent storage chamber 102 rotates out from the bottom side of the dephosphorizing agent storage chamber 102, and another set of ball cylinders 2054 rotates to the bottom side of the material inlet A1021. During this process, the bottom side of the material inlet A1021 is blocked by the arc-shaped baffle 206. At the same time, the square fixing block 2052 on a set of flipping shafts 205 disengages from the limiting support ring 1092 to the notch side, so that the bevel gear 2051 contacts the arc-shaped baffle 2093. The meshing and movement of the toothed segment 1093 to the middle of the arc-shaped toothed segment 1093 causes the set of ball cylinders 2054 to rotate 180° on the upper side of the inclined slope 1091, pouring out the phosphorus removal agent inside and sliding down the inclined slope 1091 into the sewage treatment chamber 101. During this process, the bevel gear 2051 on the flipping shaft 205, which was originally on the upper side of the inclined slope 1091, disengages from the arc-shaped toothed segment 1093 and causes the flipping shaft 205 to continue rotating 180°, flipping the opening of the set of ball cylinders 2054 to the upper horizontal position, and causing the bottom end of the square fixing block 2052 to continue to stick to the limiting support ring 1093.

[0050] In embodiments of the present invention, such as Figure 4 As shown, the opening on the top side of the ball cylinder 2054 is a horizontal structure and is flush with the surface of the arc-shaped baffle 206. The top opening of a set of ball cylinders 2054 is attached to the bottom of the material inlet A1021, and the diagonal length of the material inlet A1021 is less than the inner diameter of the top opening of the ball cylinder 2054. This allows the descaling agent in the descaling agent storage chamber 102 to fall into the ball cylinder 2054 directly below through the material inlet B10211 and the material inlet A1021, and fill the ball cylinder 2054.

[0051] The specific usage and function of this embodiment are as follows:

[0052] In this invention, sewage is sent into the sewage treatment chamber 101 through the sewage input pipe 105, and the control valve on the discharge pipe 107 is opened to pour the dephosphorizing agent into the dephosphorizing agent storage chamber 102. The dephosphorizing agent will first fall into the ball cylinder 2054 directly below through the material port B10211 and the material port A1021.

[0053] By controlling the stepper motor 3 to rotate its motor shaft 90°, the bottom end of the motor shaft is inserted into the hexagonal socket 2041 at the top of the circular card holder 204 via a hexagonal column. This causes the circular card holder 204, the cross-shaped connecting rod 202, and the circular support cylinder 201 to rotate 90°, and simultaneously drives the four sets of flipping shafts 205 to rotate with the cross-shaped connecting rod 202. This causes the ball cylinder 2054 on the bottom side of the descaling agent storage chamber 102 to rotate out from the bottom side of the descaling agent storage chamber 102, and another set of ball cylinders 2054 to rotate to the bottom side of the material inlet A1021. During this process, the ball cylinder 2054 rotates out from the bottom side of the descaling agent storage chamber 102 via an arc. Baffle 206 blocks the bottom side of inlet A1021 to prevent the dephosphorizing agent in the dephosphorizing agent storage chamber 102 from continuing to flow out through inlet A1021. Simultaneously, the square fixing block 2052 on a set of tilting shafts 205 disengages from the limiting support ring 1092 to the notch side, causing the bevel gear 2051 to mesh with the arc-shaped tooth segment 1093 and move to the middle of the arc-shaped tooth segment 1093. This causes the set of ball cylinders 2054 to tilt 180° on the upper side of the inclined slide 1091, pouring out the dephosphorizing agent inside, which then slides down the inclined slide 1091 into the wastewater treatment chamber 101. Figure 3 and Figure 4 As shown, rapid quantitative dispensing of phosphorus remover can be achieved without the need for step-by-step weighing, simplifying the cumbersome process of step-by-step weighing required in existing technologies. During this process, the bevel gear 2051 on the flipping shaft 205, which was originally located on the upper side of the inclined landslide 1091, disengages from the arc-shaped tooth segment 1093 and drives the flipping shaft 205 to continue rotating 180°, flipping the opening of the ball cylinder 2054 to the upper horizontal position, and causing the bottom end of the square fixing block 2052 to continue to stick to the limiting support ring 1093.

[0054] Furthermore, when the stepper motor 3 drives the phosphorus removal agent dosing component 2 to rotate in a stepping manner, it can also drive the first stirring shaft 1011 and the second stirring shaft 1012 to rotate, and use the stirring blades on the first stirring shaft 1011 and the second stirring shaft 1012 to stir the sewage in the sewage treatment chamber 101, accelerate the mixing of phosphorus removal agent and sewage, and improve the sewage treatment efficiency.

[0055] The following points should be noted in this article:

[0056] 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0057] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0058] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A wastewater treatment phosphorus removal agent dosing device, comprising: The shell (1), the phosphorus removal agent dosing component (2), and the stepper motor (3); The inner side of the shell (1) is provided with a sewage treatment chamber (101), and the upper end of the sewage treatment chamber (101) is spaced by a phosphorus removal agent storage chamber (102). The inner side of the shell (1) is also provided with two sets of opposing upper support plates (103), and partition plates (104) are fixed to them by bolts. Sewage input pipe (105) and air outlet pipe (106) are respectively inserted on the two sets of partition plates (104). A discharge pipe (107) is also inserted on one side of the lower end of the shell (1). The feature is that an observation window (108) is provided on one side of the shell (1), and a lower support plate (109) is connected to the inner side. The lower support plate (109) is located below the phosphorus removal agent storage cavity (102). One end of the lower support plate (109) is provided with a slope (1091), and a limiting support ring (1092) is fixed in the middle. An arc-shaped tooth segment (1093) is provided on the outer side of the notch of the limiting support ring (1092), and the arc-shaped tooth segment (1093) is also fixed on the upper end of the slope (1091). The phosphorus removal agent dosing assembly (2) includes a circular support cylinder (201), a cross-shaped connecting rod (202), a square connecting rod (203), and a circular bracket (204). The cross-shaped connecting rod (202) is placed in the arc groove A (2012) of the circular support cylinder (201), and the circular support cylinder (201) is placed on the lower support plate (109). A square block is connected in the middle of the cross-shaped connecting rod (202), and the square connecting rod (203) passes downward through the square through hole B (2021) on the square block and the square through hole A (2011) in the middle of the inner side of the circular support cylinder (201), and is locked on the stepped structure at the top side of the square through hole B (2021). The circular card seat (204) is fastened to the upper side of the cross-shaped connecting rod (202) through the arc groove B, and is connected to the circular support cylinder (201) by bolts. The stepper motor (3) is mounted on the lower partition (104), and the bottom end of the motor shaft of the stepper motor (3) is inserted into the hexagonal socket (2041) at the top of the circular card holder (204) through a hexagonal column.

2. The wastewater treatment phosphorus removal agent dosing device according to claim 1, characterized in that: The sewage treatment chamber (101) is also equipped with a first stirring shaft (1011) and a second stirring shaft (1012). The bottom ends of the first stirring shaft (1011) and the second stirring shaft (1012) are respectively inserted into the insert of the sewage treatment chamber (101) and are respectively equipped with two sets of stirring blades. The top end of the first stirring shaft (1011) is inserted into the lower partition (104) and is connected to the motor shaft of the stepper motor (3). The upper end of the second stirring shaft (1012) is inserted into the lower support plate (109), and the bottom end of the square connecting rod (203) is also inserted into the square hole on the top side of the second stirring shaft (1012).

3. The wastewater treatment phosphorus removal agent dosing device according to claim 1, characterized in that: The bottom inner side of the dephosphorizing agent storage cavity (102) is also provided with a square cone pad (1022). The material port B (10221) on the square cone pad (1022) is vertically opposite to the material port A (1021) in the middle of the bottom side of the dephosphorizing agent storage cavity (102), and the four inner end faces of the square cone pad (1022) are inclined downward towards the material port B (10221).

4. The wastewater treatment phosphorus removal agent dosing device according to claim 1, characterized in that: The phosphorus removal agent dosing assembly (2) also includes a tilting shaft (205) and an arc-shaped baffle (206). A bevel gear (2051) is installed on the flipping shaft (205). A square fixing block (2052) is fixed on the inner end, and a ball cylinder (2054) is fixedly connected to the outer end. The bottom side of the square fixing block (2052) is attached to the limiting support ring (1092), and the top side is connected to a square disassembly block (2053) by bolts. The square fixing block (2052) and the square disassembly block (2053) are respectively rotated and locked to the circular card plate (2023) at the outer end of the cross-shaped connecting rod (202) through the card slot. The arc-shaped baffle (206) is provided with four sets, which are respectively located between the ball cylinder (2054). The bottom side of the arc-shaped baffle (206) is connected to two sets of bottom support rods (2061), and the bottom support rods (2061) are connected to the arc rod (2022) between the cross-shaped connecting rod (202).

5. The wastewater treatment phosphorus removal agent dosing device according to claim 4, characterized in that: The ball cylinder (2054) has arc-shaped openings (2062) at both ends, which are respectively attached to the outer wall of the ball cylinder (2054). The center of the ball cylinder (2054) is on the same straight line as the flipping shaft (205).

6. The wastewater treatment phosphorus removal agent dosing device according to claim 5, characterized in that: The opening on the top side of the ball cylinder (2054) is a horizontal structure and is flush with the surface of the arc-shaped baffle (206). The top opening of a set of ball cylinders (2054) is attached to the material outlet A (1021) directly below, and the diagonal length of the material outlet A (1021) is less than the inner diameter of the top opening of the ball cylinder (2054).

7. The wastewater treatment phosphorus removal agent dosing device according to claim 4, characterized in that: When the bottom end of the square fixing block (2052) is completely disengaged from the limiting support ring (1093) and is on the notch side, the bevel gear (2051) meshes with the arc-shaped tooth segment (1092), and when the bevel gear (2051) is completely disengaged from the arc-shaped tooth segment (1092), the flipping shaft (205) rotates exactly 360°, and the square fixing block (2052) contacts the other side of the notch of the limiting support ring (1093).

Images