Sewage treatment agent spreading device for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment agent sowing device for sewage treatment, which comprises a main body and a moving mechanism, and the moving mechanism is mounted on the inner wall of the main body and is used for sliding during operation of the main body. When a swinging plate swings downwards, a first sliding block is driven to slide downwards in a rotating strip, two first connecting rods are pushed to slide downwards in the downward swinging process of the swinging plate, and when the first connecting rods slide downwards, due to the fact that the inner walls of the two first connecting rods are slidably connected with pushing rods, when the two first connecting rods slide, the first connecting rods are pushed to slide downwards; due to the change of the distance between the first connecting rods and the pushing rod, the distance between the first connecting rods is increased, so that a part of treating agent particles are blocked, the effect of regulating and controlling the treating agent particles when the number of the falling treating agent particles is large is achieved, and the situation that the treating agent particles are left when the number of the treating agent particles are conveyed into sewage is reduced; and the efficiency of scattering the treating agent particles is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a sewage treatment agent spreading device for sewage treatment. Background Art

[0002] As demand for sewage treatment increases, existing spreading devices are facing numerous challenges. The underlying technology can be summarized as follows: Increasing environmental protection requirements and growing sewage discharge volumes are driving the development of precision-engineered sewage treatment agent spreading devices. Traditional manual, gravity-based, and mechanically agitated devices suffer from inaccurate metering, low automation, clogging, and high energy consumption, making them difficult to adapt to dynamic changes in water quality. The application of new agents and the need to reduce costs and increase efficiency are driving the need for more intelligent, efficient, and adaptable spreading devices, a key area for technological improvement.

[0003] During the use of the sewage treatment agent spreading device for sewage treatment, the spiral rod located inside the discharge pipe is generally rotated, and then the sewage treatment agent particles are driven to move when the spiral rod rotates. When the sewage treatment agent particles move to the discharge port, they will fall into the sewage through the discharge port due to gravity to complete the spreading. In this way, when the amount of sewage treatment agent particles delivered each time is greater than the amount required for spreading in the sewage, some sewage treatment agent particles will not dissolve after entering the sewage and will be wasted, thereby affecting the quality of the sewage treatment agent particles when they are spread. Summary of the Invention

[0004] The object of the present invention is to provide a sewage treatment agent spreading device for sewage treatment to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a sewage treatment agent spreading device for sewage treatment, comprising a main body, further comprising;

[0007] A moving mechanism is installed on the inner wall of the main body and is used for sliding when the main body is in operation;

[0008] The auxiliary mechanism is installed on the inner wall of the main body and is used to assist the operation of the moving mechanism.

[0009] Furthermore, the main body includes a motor fixedly connected to the top of the main body, and the main body includes:

[0010] The conveying component is installed on the top of the main body and is used to convey the sewage treatment agent;

[0011] The swing assembly is installed on the inner wall of the main body through a swing piece and is used to swing under the gravity of the falling treatment agent.

[0012] Furthermore, the moving mechanism includes two arc-shaped rods rotatably connected to the top of the push plate, and the moving mechanism includes:

[0013] A sliding assembly is mounted on the top of the swing assembly and is used for sliding when the swing assembly swings;

[0014] The contraction component is installed at the bottom of the swing component and is used to move when the swing component swings downward.

[0015] Furthermore, the auxiliary mechanism includes a plurality of support bars fixedly connected to the inner wall of the conveying assembly, and the auxiliary mechanism includes:

[0016] A support assembly is installed on the inner wall of the conveying assembly to assist the retraction assembly in retraction when it descends;

[0017] The lifting assembly is fixedly mounted on the top of the support bar and is used for descending movement when the retracting assembly moves.

[0018] Furthermore, the conveying assembly includes a screw rod meshingly connected to the output end of the motor, the outer surface of the screw rod is rotatably connected to the conveying pipe, and the bottom of the conveying pipe is fixedly connected to the discharge pipe;

[0019] Wherein, a conical plate is fixedly connected to the inner wall of the discharge pipe.

[0020] Furthermore, the swing member includes a swing plate rotatably connected to the inner wall of the discharge pipe, the top of the swing plate is fixedly connected to two guide plates, and the inner wall of the guide plate is provided with a placement groove;

[0021] The inner wall of the placement slot is fixedly connected to a return spring, and one end of the return spring away from the placement slot is fixedly connected to a push plate;

[0022] The ends of the two pushing plates that are close to each other are rotatably connected to the inner wall of the placement groove, the bottom of the swing plate is fixedly connected with an arc spring, and the end of the arc spring away from the swing plate is fixedly connected to the inner wall of the discharge pipe.

[0023] Furthermore, the sliding assembly includes a connecting rod 1 rotatably connected to an end of the arc-shaped rod away from the push plate, and ends of the two connecting rods 1 close to each other are rotatably connected to a sliding block 1, and the outer surface of the sliding block 1 is slidably connected to a rotating bar;

[0024] Among them, the end of the rotating bar away from the guide plate is rotatably connected to the inner wall of the discharge pipe, the top of the rotating bar is fixedly connected to a push rod, the side wall of the push rod is slidably connected between the two connecting rods, and the bottom of the sliding block is fixedly connected to the top of the swing plate.

[0025] Furthermore, the contraction assembly includes two connecting rods 2 rotatably connected to the bottom of the swing plate, the bottoms of the two connecting rods 2 are fixedly connected to an annular rod, the inner walls of the annular rods are fixedly connected to several moving blocks, and the inner walls of the moving blocks are slidably connected to an arc plate.

[0026] Furthermore, the support assembly includes a connecting block fixedly connected to the top of the support bar, wherein the tops of the two connecting blocks are fixedly connected to the support rod, and the side walls of the support rod are slidably connected to the sliding rod;

[0027] The outer surfaces of the plurality of support bars are fixedly connected to the inner wall of the discharge pipe, and the side walls of the plurality of connection blocks are rotatably connected to the side walls of the plurality of arc-shaped plates.

[0028] Furthermore, the lifting assembly includes a spring fixedly connected to the top of the support bar, the top of the spring is fixedly connected to the filter plate, and the outer surface of the filter plate is rotatably connected to a plurality of sliding blocks 2;

[0029] The outer surfaces of the plurality of sliding blocks 2 are slidably connected to the inner walls of the plurality of arc-shaped plates.

[0030] The present invention has the following beneficial effects:

[0031] 1. According to the present invention, when the swing plate swings downward, it drives the sliding block 1 to slide downward inside the rotating bar. In the process of the swing plate swinging downward, it pushes the two connecting rods 1 to slide downward. When the connecting rod 1 slides downward, since the inner walls of the two connecting rods 1 are slidably connected with the pushing rods, when the two connecting rods 1 slide, the distance between the two connecting rods 1 increases due to the change in the distance from the pushing rods, thereby blocking a part of the treatment agent particles, thereby playing a role in regulating the treatment agent particles when a large number of falling treatment agent particles are present, reducing the situation where treatment agent particles are left over when a large number of treatment agent particles are transported into the sewage, and improving the efficiency of the treatment agent particle spreading.

[0032] 2. According to the present invention, when the annular rod slides downward, it applies thrust to the plurality of arc-shaped plates, causing the arc-shaped plates to rotate downward on the side walls of the connecting block. When the arc-shaped plates continue to move, the plurality of arc-shaped plates will merge to form a cone with a notch. Then, when the regulated treatment agent particles fall along the holes of the cone plate to the top of the plurality of arc-shaped plates after the movement is completed, when the treatment agent particles reach the top of the arc-shaped plates, they will disperse and enter the gap along the outer surface of the arc-shaped plates. Then, the dispersed treatment agent particles will be spread into the sewage through the discharge pipe, thereby reducing the phenomenon of agglomeration caused by the falling treatment agent particles entering the sewage in a concentrated manner, and improving the overall quality of the treatment agent particles when being spread.

[0033] 3. In the present invention, the particles on the top of the swing plate are reduced and reset by the counter-thrust force of the arc spring. During the reset of the swing plate, the sliding block 1 is pushed to slide upward inside the rotating bar, and then the connecting rod 1 is pulled to reset. During the reset of the connecting rod 1, the push plate is pulled to reset by the arc rod, so that the treatment agent particles on the top of the swing plate are pushed outward and flow downward along the cavity of the conical plate and then spread out. This reduces the situation where a part of the treatment agent particles are accumulated on the top of the swing plate when the spreading of the treatment agent particles stops, thereby improving the efficiency of spreading the treatment agent particles.

[0034] 4. In the present invention, when a small number of treatment agent particles fall through the conical plate, they will directly fall to the top of the filter plate. After that, the treatment agent particles will be dispersed through the holes of the filter plate and then spread outward through the inside of the discharge pipe. When there are a large number of treatment agent particles, the swing plate pushes the connecting rod 2 to drop, and several arc plates will be merged. At the same time, due to the change in the distance between the several arc plates, the filter plate will be squeezed to make the sliding block 2 slide downward along the inner wall of the arc plate. When the sliding block 2 slides downward, it will drive the filter plate to apply thrust to the spring to make it contract and move downward, thereby completing the merging of the arc plates, enhancing the dispersion effect of the treatment agent particles in the falling process, and improving the overall quality of the treatment agent particles when they are spread.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the swing assembly of the present invention;

[0039] Figure 4 This is a schematic diagram of the sliding assembly of the present invention;

[0040] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0041] Figure 6 This is a schematic diagram of the shrinkage assembly of the present invention;

[0042] Figure 7 This is a schematic diagram of the support assembly of the present invention;

[0043] Figure 8 This is a schematic diagram of the lifting assembly of the present invention;

[0044] Figure 9 For the present invention Figure 8 Enlarged view of point B in the middle.

[0045] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0046] In the figure: 1. Main body; 11. Conveying assembly; 111. Motor; 112. Screw rod; 113. Conveying pipe; 114. Discharging pipe; 12. Swinging assembly; 121. Swinging plate; 122. Guide plate; 123. Placement slot; 124. Return spring; 125. Push plate; 2. Moving mechanism; 21. Sliding assembly; 211. Arc rod; 212. Connecting rod 1; 213. Sliding block 1; 214. Rotating bar; 22. Contraction assembly; 221. Connecting rod 2; 222. Annular rod; 223. Moving block; 224. Arc plate; 3. Auxiliary mechanism; 31. Support assembly; 311. Support bar; 312. Connecting block; 313. Support rod; 314. Sliding rod; 32. Lifting assembly; 321. Spring; 322. Filter plate; 323. Sliding block 2. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0048] See also Figures 1-9 As shown, the present invention is a sewage treatment agent spreading device for sewage treatment, comprising a main body 1, and further comprising:

[0049] The moving mechanism 2 is installed on the inner wall of the main body 1 and is used for sliding when the main body 1 is in operation;

[0050] The auxiliary mechanism 3 is installed on the inner wall of the main body 1 and is used to assist the operation of the moving mechanism 2.

[0051] The main body 1 includes a motor 111 fixedly connected to the top of the main body 1. The main body 1 includes:

[0052] The conveying component 11 is installed on the top of the main body 1 and is used to convey the sewage treatment agent;

[0053] The swing assembly 12 is installed on the inner wall of the main body 1 through a swing member, and is used to swing under the gravity of the falling treatment agent.

[0054] The moving mechanism 2 includes two arc-shaped rods 211 rotatably connected to the top of the push plate 125. The moving mechanism 2 includes:

[0055] The sliding assembly 21 is mounted on the top of the swing assembly 12 and is used to slide when the swing assembly 12 swings;

[0056] The contraction assembly 22 is installed at the bottom of the swing assembly 12 and is used to move when the swing assembly 12 swings downward.

[0057] The auxiliary mechanism 3 includes a plurality of support bars 311 fixedly connected to the inner wall of the conveying assembly 11. The auxiliary mechanism 3 includes:

[0058] The support assembly 31 is installed on the inner wall of the conveying assembly 11 and is used to assist the retraction assembly 22 in retracting when it descends;

[0059] The lifting assembly 32 is fixedly mounted on the top of the support bar 311 and is used for descending when the retracting assembly 22 moves.

[0060] The conveying assembly 11 includes a screw rod 112 meshingly connected to the output end of the motor 111. The outer surface of the screw rod 112 is rotatably connected to a delivery pipe 113. The bottom of the delivery pipe 113 is fixedly connected to a discharge pipe 114.

[0061] Among them, the inner wall of the discharge pipe 114 is fixedly connected with a conical plate, and when the motor 111 moves, it will drive the screw rod 112 to rotate through its output shaft. When the screw rod 112 rotates, it will drive the treatment agent particles located inside the feed pipe 113 to be transported toward the discharge pipe 114 and then fall into the inside of the feed pipe 114.

[0062] The swing member includes a swing plate 121 rotatably connected to the inner wall of the discharge pipe 114. Two guide plates 122 are fixedly connected to the top of the swing plate 121. The inner wall of the guide plate 122 is provided with a placement groove 123.

[0063] The inner wall of the placement groove 123 is fixedly connected to a return spring 124, and one end of the return spring 124 away from the placement groove 123 is fixedly connected to a push plate 125;

[0064] The ends of the two pushing plates 125 that are close to each other are rotatably connected to the inner wall of the placement groove 123. The bottom of the swing plate 121 is fixedly connected with an arc spring, and the end of the arc spring away from the swing plate 121 is fixedly connected to the inner wall of the discharge pipe 114. During the falling process, the treatment agent particles will fall to the top of the swing plate 121. Since the swing plate 121 is tilted, when the number of falling treatment agent particles is small, the treatment agent particles will directly fall along the top of the swing plate 121 to the conical plate, and then fall from the opening of the conical plate to the filter plate 322 at the bottom.

[0065] The sliding assembly 21 includes a connecting rod 212 rotatably connected to the end of the arc-shaped rod 211 away from the push plate 125, and the ends of the two connecting rods 212 that are close to each other are rotatably connected to a sliding block 213, and the outer surface of the sliding block 213 is slidably connected to a rotating bar 214;

[0066] Among them, the end of the rotating bar 214 away from the guide plate 122 is rotatably connected to the inner wall of the discharge tube 114, and the top of the rotating bar 214 is fixedly connected to a push rod, and the side wall of the push rod is slidably connected between the two connecting rods 212, and the bottom of the sliding block 213 is fixedly connected to the top of the swing plate 121. The swing plate 121 will be subjected to the gravity brought by the treating agent particles to apply a thrust to the arc spring, causing it to contract and then swing downward to the side wall of the conical plate. When the swing plate 121 swings downward, it will drive the sliding block 213 to slide downward inside the rotating bar 214. In the process of the swing plate 121 swinging downward, it will push the two connecting rods 212 to slide downward.

[0067] The contraction assembly 22 includes two connecting rods 221 rotatably connected to the bottom of the swing plate 121, and the bottoms of the two connecting rods 221 are fixedly connected with an annular rod 222, and the inner walls of the annular rods 222 are fixedly connected with several moving blocks 223, and the inner walls of the moving blocks 223 are slidably connected with an arc plate 224. When the swing plate 121 swings downward, it will push the connecting rod 221 at its bottom to move downward. In the process of the connecting rod 221 moving downward, it will push the annular rod 222 at its bottom to drive the moving blocks 223 to slide downward on the outer surface of the arc plate 224. When the annular rod 222 slides downward, it will apply thrust to the several arc plates 224 to make the arc plates 224 rotate downward on the side walls of the connecting block 312.

[0068] The support assembly 31 includes a connection block 312 fixedly connected to the top of the support bar 311, wherein the tops of the two connection blocks 312 are fixedly connected to support rods 313, and the side walls of the support rods 313 are slidably connected to sliding rods 314;

[0069] Among them, the outer surface of several support bars 311 is fixedly connected to the inner wall of the discharge pipe 114, and the side walls of several connecting blocks 312 are rotatably connected to the side walls of several arc plates 224. When fewer treatment agent particles fall through the conical plate, they will fall directly to the top of the filter plate 322. After that, the treatment agent particles will be dispersed through the holes in the filter plate 322 and then spread outward through the inside of the discharge pipe 114.

[0070] The lifting assembly 32 includes a spring 321 fixedly connected to the top of the support bar 311, a filter plate 322 fixedly connected to the top of the spring 321, and a plurality of sliding blocks 323 rotatably connected to the outer surface of the filter plate 322;

[0071] Among them, the outer surfaces of several sliding blocks 323 are slidably connected to the inner walls of several curved plates 224. Several curved plates 224 will be merged. At the same time, due to the change in the distance between the several curved plates 224, the filter plate 322 will be squeezed so that the sliding blocks 323 slide downward along the inner wall of the curved plate 224.

[0072] When in use, first start the motor 111, and then when the motor 111 moves, it will drive the screw rod 112 to rotate through its output shaft. When the screw rod 112 rotates, it will drive the treatment agent particles located inside the delivery pipe 113 to be transported in the direction of the discharge pipe 114 and then fall into the inside of the inlet and outlet pipes 114. In the process of falling, the treatment agent particles will fall to the top of the swing plate 121. Since the swing plate 121 is inclined, when there are fewer falling treatment agent particles, the treatment agent particles will directly fall along the top of the swing plate 121 to the conical plate and then fall from the opening of the conical plate to the filter plate 322 at the bottom. After that, the treatment agent particles will continue to fall into the sewage through the filter plate 322 to complete the transportation. When the treatment agent particles driven by the screw rod 112 to fall to the top of the swing plate 121 are large, the swing plate 121 will be affected by the treatment agent particles. Gravity applies a thrust to the arc spring, causing it to contract and then swing downward to the side wall of the conical plate. When the swing plate 121 swings downward, it drives the sliding block 213 to slide downward inside the rotating bar 214. In the process of the swing plate 121 swinging downward, it pushes the two connecting rods 212 to slide downward. When the connecting rod 212 slides downward, since the inner walls of the two connecting rods 212 are slidingly connected with the pushing rod, when the two connecting rods 212 slide, the change in the distance from the pushing rod will increase the distance between the two connecting rods 212, thereby blocking a part of the treatment agent particles, thereby playing a role in regulating the treatment agent particles when there are more falling treatment agent particles, reducing the situation where treatment agent particles are left over when more treatment agent particles are transported into the sewage, and improving the efficiency of the treatment agent particle spreading.

[0073] When the swing plate 121 swings downward, it pushes the connecting rod 221 at its bottom to move downward. In the process of the connecting rod 221 moving downward, it pushes the annular rod 222 at its bottom to drive the moving block 223 to slide downward on the outer surface of the arc plate 224. When the annular rod 222 slides downward, it applies thrust to the plurality of arc plates 224 to make the arc plates 224 rotate downward on the side wall of the connecting block 312. When the arc plates 224 continue to move, the plurality of arc plates 224 will merge to form a notch. The treatment agent particles are regulated to fall along the holes of the conical plate to the tops of the several curved plates 224 after the movement is completed. When the treatment agent particles reach the tops of the curved plates 224, they will be dispersed and enter the gaps along the outer surfaces of the curved plates 224. The dispersed treatment agent particles will then be spread into the sewage through the discharge pipe 114, thereby reducing the phenomenon of agglomeration caused by the falling treatment agent particles entering the sewage in a concentrated manner and improving the overall quality of the treatment agent particles when being spread.

[0074] During the swinging of the two connecting rods 212, the arc rod 211 will be pushed to swing outward, and then the arc rod 211 will push the pushing plate 125 to apply a thrust to the return spring 124. After the return spring 124 is pushed, it will shrink. When the return spring 124 shrinks, it will pull the pushing plate 125 to swing toward the inside of the placement groove 123. After the pushing plate 125 swings toward the inside of the placement groove 123, when more treatment agent particles fall, the connecting rod 212 will push some of the unblocked treatment agent particles along the side wall of 215 to move between the two connecting rods 212, thereby playing a role in limiting the treatment agent particles. When the device is used, the swing The particles on the top of the plate 121 are reduced and reset by the counter-thrust force of the arc spring. During the reset of the swing plate 121, the sliding block 213 is pushed to slide upward inside the rotating bar 214, and then the connecting rod 212 is pulled to reset. During the reset of the connecting rod 212, the push plate 125 is pulled to reset through the arc rod 211, so that the treatment agent particles on the top of the swing plate 121 are pushed outward and flow downward along the cavity of the conical plate, and then spread out, reducing the situation where a part of the treatment agent particles will accumulate on the top of the swing plate 121 when the spreading of the treatment agent particles stops, thereby improving the efficiency of spreading the treatment agent particles.

[0075] When a small number of treatment agent particles fall through the conical plate, they will fall directly to the top of the filter plate 322. After that, the treatment agent particles will be dispersed through the holes in the filter plate 322 and then spread outward through the inside of the discharge pipe 114. When there are more treatment agent particles, the swing plate 121 pushes the connecting rod 221 down, and several arc plates 224 will merge. At the same time, due to the change in the distance between the several arc plates 224, the filter plate 322 will be squeezed so that the sliding block 2 323 slides downward along the inner wall of the arc plate 224. When the sliding block 2 323 slides downward, it will drive the filter plate 322 to apply a thrust to the spring 321 to make it contract and move downward, thereby completing the merging of the arc plates 224, thereby enhancing the dispersion effect of the treatment agent particles during the falling process and improving the overall quality of the treatment agent particles when they are spread.

Claims

1. A sewage treatment agent spreading device for sewage treatment, comprising a main body (1), characterized in that: Also includes; A moving mechanism (2), the moving mechanism (2) being mounted on the inner wall of the main body (1) and configured to slide when the main body (1) is in operation; An auxiliary mechanism (3) is installed on the inner wall of the main body (1) and is used to assist the operation of the moving mechanism (2).

2. A sewage treatment agent spreading device for sewage treatment according to claim 1, characterized in that: The main body (1) includes a motor (111) fixedly connected to the top of the main body (1), and the main body (1) includes: A conveying component (11), the conveying component (11) is installed on the top of the main body (1) and is used to convey the sewage treatment agent; The swing assembly (12) is mounted on the inner wall of the main body (1) through a swing member and is used to swing under the gravity of the falling treatment agent.

3. The sewage treatment agent spreading device for sewage treatment according to claim 2, characterized in that: The moving mechanism (2) comprises two arc-shaped rods (211) rotatably connected to the top of the push plate (125). The moving mechanism (2) comprises: A sliding assembly (21), the sliding assembly (21) being mounted on the top of the swing assembly (12) and configured to slide when the swing assembly (12) swings; A contraction component (22) is installed at the bottom of the swing component (12), and the contraction component (22) is used to move when the swing component (12) swings downward.

4. A sewage treatment agent spreading device for sewage treatment according to claim 3, characterized in that: The auxiliary mechanism (3) comprises a plurality of support bars (311) fixedly connected to the inner wall of the conveying assembly (11), and the auxiliary mechanism (3) comprises: A support assembly (31), the support assembly (31) being mounted on the inner wall of the conveying assembly (11) and used to assist the contraction assembly (22) in contracting when descending; A lifting assembly (32) is fixedly mounted on the top of the support bar (311) and is used for descending when the retracting assembly (22) moves.

5. The sewage treatment agent spreading device for sewage treatment according to claim 4, characterized in that: The conveying assembly (11) comprises a screw rod (112) meshingly connected to the output end of the motor (111); the outer surface of the screw rod (112) is rotatably connected to a conveying pipe (113); and the bottom of the conveying pipe (113) is fixedly connected to a discharge pipe (114); Wherein, a conical plate is fixedly connected to the inner wall of the discharge pipe (114).

6. The sewage treatment agent spreading device for sewage treatment according to claim 5, characterized in that: The swing member comprises a swing plate (121) rotatably connected to the inner wall of the discharge pipe (114), two guide plates (122) are fixedly connected to the top of the swing plate (121), and a placement groove (123) is formed on the inner wall of the guide plate (122); The inner wall of the placement groove (123) is fixedly connected to a return spring (124), and one end of the return spring (124) away from the placement groove (123) is fixedly connected to a push plate (125); The ends of the two pushing plates (125) that are close to each other are rotatably connected to the inner wall of the placement groove (123), the bottom of the swing plate (121) is fixedly connected to an arc spring, and the end of the arc spring away from the swing plate (121) is fixedly connected to the inner wall of the discharge pipe (114).

7. The sewage treatment agent spreading device for sewage treatment according to claim 6, characterized in that: The sliding assembly (21) includes a connecting rod (212) rotatably connected to one end of the arc rod (211) away from the push plate (125), and two ends of the connecting rods (212) close to each other are rotatably connected to a sliding block (213), and the outer surface of the sliding block (213) is slidably connected to a rotating bar (214); The end of the rotating bar (214) away from the guide plate (122) is rotatably connected to the inner wall of the discharge tube (114), the top of the rotating bar (214) is fixedly connected to a push rod, the side wall of the push rod is slidably connected between the two connecting rods (212), and the bottom of the sliding block (213) is fixedly connected to the top of the swing plate (121).

8. The sewage treatment agent spreading device for sewage treatment according to claim 7, characterized in that: The retracting assembly (22) comprises two connecting rods (221) rotatably connected to the bottom of the swing plate (121), the bottoms of the two connecting rods (221) are fixedly connected to an annular rod (222), the inner walls of the annular rods (222) are fixedly connected to a plurality of moving blocks (223), and the inner walls of the moving blocks (223) are slidably connected to an arc-shaped plate (224).

9. The sewage treatment agent spreading device for sewage treatment according to claim 8, characterized in that: The support assembly (31) comprises a connection block (312) fixedly connected to the top of the support bar (311), wherein the tops of two of the connection blocks (312) are fixedly connected to support rods (313), and the side walls of the support rods (313) are slidably connected to sliding rods (314); The outer surfaces of several of the support bars (311) are fixedly connected to the inner wall of the discharge pipe (114), and the side walls of several of the connection blocks (312) are rotatably connected to the side walls of several of the arc-shaped plates (224).

10. The sewage treatment agent spreading device for sewage treatment according to claim 9, characterized in that: The lifting assembly (32) includes a spring (321) fixedly connected to the top of the support bar (311), the top of the spring (321) is fixedly connected to a filter plate (322), and the outer surface of the filter plate (322) is rotatably connected to a plurality of sliding blocks (323); The outer surfaces of the plurality of sliding blocks 2 (323) are slidably connected to the inner walls of the plurality of arc-shaped plates (224).

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