Sewage treatment agent spreading device for sewage treatment

Abstract

The present application relates to sewage treatment technical field, and disclose a kind of sewage treatment agent spreading device for sewage treatment, including main body, still including moving mechanism, moving mechanism installation setting in the inner wall of main body, for sliding when the main body operates.The present application when swing plate swings downward, it will drive sliding block one to slide downward in the inside of rotating strip, two connecting rods one are pushed to slide downward in the process when swing plate swings downward, when two connecting rods one slide downward, because the inner wall of two connecting rods one is slidably connected with push rod, so when two connecting rods one slide, because the distance change with push rod will make the distance between two connecting rods one larger, so as to block a part of treatment agent particles, so as to play the role of treatment agent particle regulation when more treatment agent particles fall, reduce the situation that treatment agent particles remain when more treatment agent particles are transported to sewage, improve the efficiency when treatment agent particle is sown.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment agent application device. Background Technology

[0002] With the upgrading of wastewater treatment needs, existing application devices have revealed many problems. The background technology can be summarized as follows: Increased environmental protection requirements and growing wastewater discharge are driving the development of more precise wastewater treatment agent application devices; traditional manual, gravity-based, and mechanical stirring devices suffer from inaccurate metering, low automation, clogging susceptibility, and high energy consumption, making them difficult to adapt to dynamic changes in water quality; the application of new agents and the need for cost reduction and efficiency improvement urgently require more intelligent, efficient, and adaptable application devices, which is precisely the key direction for technological improvement.

[0003] In the process of using a wastewater treatment agent dispensing device, the process generally involves rotating a screw rod located inside the discharge pipe. As the screw rod rotates, it moves the wastewater treatment agent particles. When the particles reach the discharge port, they fall into the wastewater due to gravity, thus completing the dispensing process. However, if the amount of wastewater treatment agent particles delivered each time is greater than the amount needed for dispensing in the wastewater, some particles may not dissolve and be wasted, which in turn affects the quality of the wastewater treatment agent dispensing. Summary of the Invention

[0004] The purpose of this invention is to provide a wastewater treatment agent application device for wastewater treatment, so as to solve the problems mentioned in the background art.

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

[0006] This invention relates to a wastewater treatment agent application device, comprising a main body and further comprising:

[0007] The moving mechanism is installed on the inner wall of the main body and is used to slide during the movement of the main body;

[0008] The auxiliary mechanism is installed on the inner wall of the main body 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] A conveying assembly, installed on top of the main body, is used to convey wastewater treatment agent;

[0011] The swing assembly is installed on the inner wall of the main body via a swinging component, 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 component is mounted on top of the swing component and is used to slide when the swing component swings.

[0014] A retractable assembly is installed at the bottom of the swing assembly and is used to move when the swing assembly swings downward.

[0015] Furthermore, the auxiliary mechanism includes several support bars fixedly connected to the inner wall of the conveying assembly. The auxiliary mechanism includes:

[0016] Support components are installed on the inner wall of the conveying components to assist the shrinking components in shrinking as they descend.

[0017] The lifting assembly is fixedly installed on the top of the support bar and is used to lower the assembly when it moves.

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

[0019] The inner wall of the discharge pipe is fixedly connected with a conical plate.

[0020] Furthermore, the oscillating component includes an oscillating plate rotatably connected to the inner wall of the discharge pipe, with two guide plates fixedly connected to the top of the oscillating plate, and placement grooves provided on the inner wall of the guide plates;

[0021] Among them, a return spring is fixedly connected to the inner wall of the placement groove, and a push plate is fixedly connected to the end of the return spring away from the placement groove;

[0022] The ends of the two push plates that are close to each other are rotatably connected to the inner wall of the placement groove. An arc spring is fixedly connected to the bottom of the swing plate, 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 rotatably connected to the end of the arc-shaped rod away from the push plate, a sliding block rotatably connected to the end of the two connecting rods that are close to each other, and a rotating strip slidably connected to the outer surface of the sliding block rotatably.

[0024] The rotating bar is rotatably connected to the inner wall of the discharge pipe at one end away from the guide plate. A push rod is fixedly connected to the top of the rotating bar. The side wall of the push rod is slidably connected between two connecting rods. The bottom of the sliding block is fixedly connected to the top of the swing plate.

[0025] Furthermore, the shrinking assembly includes two connecting rods rotatably connected to the bottom of the swing plate. The bottom of the two connecting rods is fixedly connected to an annular rod. Several movable blocks are fixedly connected to the inner wall of the annular rod, and an arc-shaped plate is slidably connected to the inner wall of the movable blocks.

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

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

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

[0029] Among them, the outer surfaces of several sliding blocks are slidably connected to the inner walls of several arc-shaped plates.

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

[0031] 1. In this invention, when the swing plate swings downward, it drives the sliding block to slide downward inside the rotating bar. During the downward swing of the swing plate, it pushes the two connecting rods to slide downward. When the connecting rods slide downward, since the inner walls of the two connecting rods are slidably connected to the pushing rods, the change in distance between the two connecting rods and the pushing rods increases the distance between the two connecting rods, thereby blocking some of the treatment agent particles. This plays a role in regulating the treatment agent particles when there are many falling treatment agent particles, reducing the situation of residual treatment agent particles when a large number of treatment agent particles are transported into the sewage, and improving the efficiency of treatment agent particle dispersal.

[0032] 2. In this invention, when the ring rod slides downward, it applies a pushing force to several arc-shaped plates, causing the arc-shaped plates to rotate downward on the side wall of the connecting block. As the arc-shaped plates continue to move, they merge to form a grooved cone. Then, when the controlled treatment agent particles fall through the holes of the cone-shaped plate to the top of the arc-shaped plates after the movement is complete, the treatment agent particles disperse and enter the gaps along the outer surface of the arc-shaped plates. After dispersion, the treatment agent particles are then distributed into the wastewater through the discharge pipe, thereby reducing the phenomenon of clumping due to the concentrated falling treatment agent particles entering the wastewater and improving the overall quality of the treatment agent particle distribution.

[0033] 3. In this invention, the number of particles at the top of the swing plate decreases, causing it to be reset by the counter-force of the arc spring. During the reset process 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 process of the connecting rod 1, the push plate is pulled to reset through the arc rod, thereby causing the treatment agent particles at the top of the swing plate to be pushed outward and then flow downward along the holes of the conical plate, and then spread out. This reduces the situation where some treatment agent particles will accumulate at the top of the swing plate when the spreading of treatment agent particles stops, thus improving the efficiency of spreading treatment agent particles.

[0034] 4. In this invention, when a small number of treatment agent particles fall through the conical plate, they will fall directly to the top of the filter plate. The particles will then be dispersed through the holes in the filter plate and spread outwards through the discharge pipe. When a large number of treatment agent particles cause the swing plate to push the connecting rod two downwards, several arc-shaped plates will merge. Simultaneously, due to the change in distance between the arc-shaped plates, the filter plate will be compressed, causing the sliding block two to slide downwards along the inner wall of the arc-shaped plate. As the sliding block two slides downwards, it will cause the filter plate to exert a pushing force on the spring, causing it to contract and move downwards, thus completing the merging of the arc-shaped plates. This enhances the dispersion effect of the treatment agent particles during the falling process and improves the overall quality of the treatment agent particle spreading.

[0035] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0037] Figure 2 This 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 component of the present invention;

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

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

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

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

[0045] The attached diagram lists the components represented by each number as follows:

[0046] In the diagram: 1. Main body; 11. Conveying assembly; 111. Motor; 112. Screw rod; 113. Feeding pipe; 114. Discharge 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 one; 213. Sliding block one; 214. Rotating bar; 22. Shrinking assembly; 221. Connecting rod two; 222. Ring 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 two. Detailed Implementation

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

[0048] Please see Figures 1-9 As shown, the present invention is a wastewater treatment agent dispensing device for wastewater 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 to slide when the main body 1 is running.

[0050] Auxiliary mechanism 3 is installed on the inner wall of the main body 1 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] Conveying assembly 11 is installed on the top of the main body 1 and is used to convey sewage treatment agent;

[0053] The swing assembly 12 is installed on the inner wall of the main body 1 via 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] Sliding component 21 is mounted on top of the swing component 12 and is used to slide when the swing component 12 swings.

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

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

[0058] Support component 31 is installed on the inner wall of conveying component 11 to assist the shrinking component 22 in shrinking when it descends;

[0059] The lifting assembly 32 is fixedly installed on the top of the support bar 311 and is used to perform a downward movement when the retraction assembly 22 moves.

[0060] The conveying assembly 11 includes a screw rod 112 that meshes with the output end of a motor 111. A conveying pipe 113 is rotatably connected to the outer surface of the screw rod 112, and a discharge pipe 114 is fixedly connected to the bottom of the conveying pipe 113.

[0061] The inner wall of the discharge pipe 114 is fixedly connected to a conical plate. When the motor 111 moves, it drives the screw rod 112 to rotate through its output shaft. When the screw rod 112 rotates, it drives the treatment agent particles located inside the conveying pipe 113 to be conveyed towards the discharge pipe 114 and then fall into the interior of the discharge pipe 114.

[0062] The oscillating component includes an oscillating 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 oscillating plate 121, and a placement groove 123 is provided on the inner wall of the guide plate 122.

[0063] Among them, a reset spring 124 is fixedly connected to the inner wall of the placement groove 123, and a push plate 125 is fixedly connected to the end of the reset spring 124 away from the placement groove 123.

[0064] The ends of the two push plates 125 that are close to each other are rotatably connected to the inner wall of the placement groove 123. An arc spring is fixedly connected to the bottom of the swing plate 121. 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 of the treatment agent particles, they 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 fall directly down the top of the swing plate 121 onto the conical plate and then fall from the opening of the conical plate onto the bottom filter plate 322.

[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 a sliding block 213 rotatably connected to the end of the two connecting rods 212 that are close to each other. A rotating strip 214 is slidably connected to the outer surface of the sliding block 213.

[0066] The rotating bar 214 is rotatably connected to the inner wall of the discharge pipe 114 at one end away from the guide plate 122. A push rod is fixedly connected to the top of the rotating bar 214. The side wall of the push rod is slidably connected between two connecting rods 212. The bottom of the sliding block 213 is fixedly connected to the top of the swing plate 121. The swing plate 121 is pushed by the gravity of the treatment agent particles, which causes the arc spring to contract and 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. During the downward swing of the swing plate 121, it will push the two connecting rods 212 to slide downward.

[0067] The retraction assembly 22 includes two connecting rods 221 rotatably connected to the bottom of the swing plate 121. An annular rod 222 is fixedly connected to the bottom of the two connecting rods 221. Several moving blocks 223 are fixedly connected to the inner wall of the annular rod 222. An arc-shaped plate 224 is slidably connected to the inner wall of the moving block 223. When the swing plate 121 swings downward, it pushes the connecting rods 221 at its bottom to move downward. During the downward movement of the connecting rods 221, it pushes the annular rod 222 at its bottom to drive the moving blocks 223 to slide downward on the outer surface of the arc-shaped plate 224. When the annular rod 222 slides downward, it applies a pushing force to the several arc-shaped plates 224, causing the arc-shaped plates 224 to rotate downward on the side wall of the connecting block 312.

[0068] The support assembly 31 includes a connecting block 312 fixedly connected to the top of the support bar 311, wherein the top of the two connecting blocks 312 is fixedly connected to a support rod 313, and a sliding rod 314 is slidably connected to the side wall of the support rod 313.

[0069] Among them, the outer surfaces of several support bars 311 are 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 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 of 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 arc plates 224. When the arc plates 224 merge, the filter plate 322 will be squeezed due to the change in the distance between the arc plates 224, causing the sliding blocks 323 to slide downward along the inner wall of the arc plates 224.

[0072] In operation, the motor 111 is first started. As the motor 111 rotates, its output shaft drives the screw 112 to rotate. The rotation of the screw 112 causes the treatment agent particles inside the conveying pipe 113 to be transported towards the discharge pipe 114, where they fall into the discharge pipe 114. During their descent, the treatment agent particles fall onto the top of the swing plate 121. Because the swing plate 121 is inclined, when the number of falling treatment agent particles is small, they fall directly from the top of the swing plate 121 onto the conical plate and then through the openings in the conical plate onto the bottom filter plate 322. The treatment agent particles then continue to fall into the wastewater through the filter plate 322, completing the transport process. When a large number of treatment agent particles fall to the top of the swing plate 121 driven by the screw 112, the swing plate 121 will be affected by the force of the falling particles. Gravity exerts a pushing force on the arc spring, causing it to contract and swing downwards to the side wall of the conical plate. When the swing plate 121 swings downwards, it drives the sliding block 213 to slide downwards inside the rotating bar 214. During the downward swing of the swing plate 121, it pushes the two connecting rods 212 downwards. When the connecting rods 212 slide downwards, since the inner walls of the two connecting rods 212 are slidably connected to the push rod, the change in distance between the two connecting rods 212 and the push rod will increase the distance between the two connecting rods 212, thereby blocking some of the treatment agent particles. This plays a role in regulating the treatment agent particles when there are many falling treatment agent particles, reducing the situation of residual treatment agent particles when a large number of treatment agent particles are transported into the sewage, and improving the efficiency of treatment agent particle dispersal.

[0073] When the swing plate 121 swings downward, it pushes the connecting rod 221 at its bottom to move downward. During the downward movement of the connecting rod 221, it pushes the annular rod 222 at its bottom, causing 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 a pushing force to several arc plates 224, causing the arc plates 224 to rotate downward on the side wall of the connecting block 312. As the arc plates 224 continue to move, several arc plates 224 will merge to form a groove. The cone-shaped treatment agent particles fall through the holes of the cone-shaped plate to the top of several arc-shaped plates 224 after the movement is completed. When the treatment agent particles reach the top of the arc-shaped plates 224, they will be dispersed and enter the gaps along the outer surface of the arc-shaped plates 224. After the dispersion is completed, the treatment agent particles will be spread into the sewage through the discharge pipe 114, thereby reducing the phenomenon of agglomeration of the falling treatment agent particles after entering the sewage in a relatively concentrated manner, and improving the overall quality of the treatment agent particles during spreading.

[0074] During the swinging of the two connecting rods 212, the arc rod 211 is pushed to swing outward. The arc rod 211 then pushes the push plate 125, causing it to exert a force on the return spring 124. Upon receiving this force, the return spring 124 contracts. As the return spring 124 contracts, it pulls the push plate 125 to swing inward into the placement groove 123. After the push plate 125 swings inward into the placement groove 123, if a large number of treatment agent particles fall, the connecting rods 212 will push some of the unobstructed treatment agent particles along the side wall of 215 between the two connecting rods 212, thus restricting the treatment agent particles. After the device has been used, the swinging... The particles at the top of plate 121 decrease, thus being reset by the counterforce of the arc spring. During the reset process 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 process of the connecting rod 212, the pushing plate 125 is pulled to reset through the arc rod 211. This causes the treatment agent particles at the top of the swing plate 121 to be pushed outward and then flow downward along the holes of the conical plate, and then spread out. This reduces the situation where some treatment agent particles will accumulate on the top of the swing plate 121 when the treatment agent particles are stopped, thus improving the efficiency of the treatment agent particle spreading.

[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 of the filter plate 322 and then spread outward through the inside of the discharge pipe 114. When there are a large number of treatment agent particles, the swing plate 121 pushes the connecting rod 221 down. At the same time, several arc plates 224 will merge. Due to the change in the distance between the arc plates 224, the filter plate 322 will be squeezed, causing the sliding block 323 to slide down along the inner wall of the arc plate 224. When the sliding block 323 slides down, it will drive the filter plate 322 to apply a pushing force to the spring 321, causing it to contract and move downward, thereby completing the merging of the arc plates 224. This enhances the dispersion effect of the treatment agent particles during the falling process and improves the overall quality of the treatment agent particle spreading.

Claims

1. A wastewater treatment agent application device for wastewater treatment, comprising a main body (1), characterized in that, Also includes: The moving mechanism (2) is installed on the inner wall of the main body (1) and is used to slide when the main body (1) is running; Auxiliary mechanism (3) is installed on the inner wall of the main body (1) to assist the operation of the moving mechanism (2); 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 assembly (11) is installed on top of the main body (1) for conveying wastewater treatment agent; The swing assembly (12) is installed on the inner wall of the main body (1) by means of a swinging component, and is used to swing under the gravity of the falling treatment agent; The conveying assembly (11) includes a screw rod (112) meshing with the output end of a motor (111), a conveying pipe (113) rotatably connected to the outer surface of the screw rod (112), and a discharge pipe (114) fixedly connected to the bottom of the conveying pipe (113). The inner wall of the discharge pipe (114) is fixedly connected with a conical plate; The oscillating component includes an oscillating 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 oscillating plate (121), and a placement groove (123) is provided on the inner wall of the guide plate (122). A return spring (124) is fixedly connected to the inner wall of the placement groove (123), and a push plate (125) is fixedly connected to the end of the return spring (124) away from the placement groove (123). The ends of the two push plates (125) that are close to each other are rotatably connected to the inner wall of the placement groove (123). An arc spring is fixedly connected to the bottom of the swing plate (121), 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). The moving mechanism (2) includes a sliding component (21), a retracting component (22), and two arc-shaped rods (211) rotatably connected to the top of the push plate (125). 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 a sliding block (213) rotatably connected to the end of the two connecting rods (212) that are close to each other. A rotating bar (214) is slidably connected to the outer surface of the sliding block (213). Wherein, the end of the rotating bar (214) away from the guide plate (122) is rotatably connected to the inner wall of the discharge pipe (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 two connecting rods (212), and the bottom of the sliding block (213) is fixedly connected to the top of the swing plate (121). The shrinking assembly (22) includes two connecting rods (221) rotatably connected to the bottom of the swing plate (121). The bottom of the two connecting rods (221) is fixedly connected to an annular rod (222). The inner wall of the annular rod (222) is fixedly connected to a plurality of moving blocks (223). The inner wall of the moving blocks (223) is slidably connected to an arc plate (224). The auxiliary mechanism (3) includes a support component (31), a lifting component (32), and a number of support bars (311) fixedly connected to the inner wall of the conveying component (11). The support assembly (31) includes a connecting block (312) fixedly connected to the top of the support bar (311), wherein the top of the two connecting blocks (312) is fixedly connected to a support rod (313), and a sliding rod (314) is slidably connected to the side wall of the support rod (313). Among them, the outer surfaces of several support bars (311) are 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). 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). Among them, the outer surfaces of several sliding blocks (323) are slidably connected to the inner walls of several arc plates (224).

2. The wastewater treatment agent application device according to claim 1, characterized in that: The sliding component (21) is installed on the top of the swing component (12) and is used to slide when the swing component (12) swings; the retracting component (22) is installed on the bottom of the swing component (12) and is used to move when the swing component (12) swings downward.

3. The wastewater treatment agent application device for wastewater treatment according to claim 2, characterized in that: The support component (31) is installed on the inner wall of the conveying component (11) to assist the shrinking component (22) in shrinking when it descends; the lifting component (32) is fixedly installed on the top of the support bar (311) to perform a downward movement when the shrinking component (22) moves.

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