Solid medicament feeding equipment for sewage treatment

Abstract

The invention discloses solid medicament feeding equipment for sewage treatment, and relates to the technical field of sewage treatment.The solid medicament feeding equipment comprises a sewage treatment cylinder, a stable support is installed on the outer wall of the sewage treatment cylinder, a driving motor is installed at the bottom of the stable support, and the output shaft end of the driving motor is fixedly connected with a stirring shaft; the side wall of the sewage treatment barrel is communicated with a water conveying pipe, and a timed and quantitative solid medicament feeding mode is realized through movable matching of a trigger abutting rod and a balance plate, firstly, timed feeding of the solid medicament is realized through stable reciprocating motion of the trigger abutting rod and timed control of a butterfly valve switch, and the fixed-time feeding of the solid medicament is realized; the dosing time of the medicament can be controlled in a timed dosing mode, congestion caused by excessive medicaments is avoided, the sewage treatment efficiency is improved, equilibrium and stability of the medicament concentration can be maintained, the position can be automatically adjusted according to the conveying change of the internal pressure of the medicament tank through the mounting design of the balance plate, and the device is convenient to use. And therefore, the output quantity of the medicament fed each time is kept consistent.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a solid medicine delivery device for sewage treatment. Background Art

[0002] Solid agent dosing equipment for sewage treatment is an indispensable and important part of the sewage treatment process. Its main function is to add chemical agents to sewage during the sewage treatment process to promote chemical reactions between harmful substances in the sewage and the agents, thereby purifying the sewage and protecting the environment.

[0003] In a Chinese patent with patent publication number CN112158979B, a solid medicine delivery device for sewage treatment is disclosed, including: a bottom plate, a plurality of support rods are connected to the upper outer side thereof; an operating frame, an operating frame is installed between the ends of the support rods; a square sliding sleeve, a square sliding sleeve is connected to one side of the operating frame; a slide plate, a slide plate is slidably connected in the square sliding sleeve; a water outlet plug, a water outlet plug is provided on one side of the bottom of the operating frame; a baffle plate, a baffle plate is connected to the upper part of one side of the slide plate; a stirring mechanism, a stirring mechanism is installed between the operating frame and the bottom plate; the delivery mechanism can be operated by water pressure, the delivery mechanism can automatically deliver solid medicine when it works, and the medicine and sewage can be stirred by the stirring mechanism.

[0004] However, the above-mentioned reference documents still have the following defects when used in practice: 1. Although the device in the comparative document saves manpower in the process of adding solid agents, its essence is still to add solid agents at one time. In the initial state of sewage treatment, adding solid agents at one time will lead to excessive addition, and some of them cannot fully play their role, resulting in waste of agents. In addition, the concentration of agents is prone to fluctuations during the treatment process, making it difficult to maintain a balanced and stable treatment effect. At the same time, one-time addition will greatly increase the stirring resistance of the stirring shaft, making it difficult to ensure sufficient stirring and mixing of the solid agents and sewage.

[0005] 2. Moreover, the equipment in the comparative document utilizes water pressure to drive a delivery mechanism to realize automatic delivery of solid agents. Its essential working principle is to inject sewage first, and then filter and remove impurities from the sewage through a filter. Since the delivery mechanism is located above the filter, part of the delivered solid agents will come into contact with and mix with the garbage on the filter, which will cause the delivered agents to be blocked by the filter and be difficult to pass through the filter to fully contact the sewage below. This design method will affect the delivery effect of the agents and the sewage treatment efficiency, because the agents cannot be evenly mixed with the sewage, resulting in reduced treatment effect.

[0006] 3. Regarding the structural installation and design in the comparative documents, there are multiple transmission coordinations of gear components in the device. From the perspective of force transmission resistance, the transmission between multiple gear components will increase friction losses, resulting in reduced energy conversion efficiency, and the contact surface of each gear component will introduce additional friction, which will cause the gap between input power and output power to increase. From the perspective of equipment operation stability, too many gear components will also increase the vibration and noise of equipment operation, especially when the agitator shaft is used for a long time and runs quickly, the vibration will cause the equipment to wear more severely and even affect the overall structural stability of the equipment.

[0007] In view of this, the present invention proposes a solid agent delivery device for sewage treatment to make up for and improve the deficiencies of the prior art. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a solid medicine delivery device for sewage treatment to solve the technical problems raised in the above background technology.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: a solid medicine delivery device for sewage treatment, comprising a sewage treatment barrel, the outer wall of the sewage treatment barrel is installed with a stable bracket, the bottom of the stable bracket is installed with a driving motor, the output shaft end of the driving motor is fixedly connected with a stirring shaft, the side wall of the sewage treatment barrel is connected with a water pipe, the bottom of the sewage treatment barrel is connected with a drainage pipe, the top of the sewage treatment barrel is provided with a time-controlled quantitative delivery mechanism, and the interior of the sewage treatment barrel is provided with a self-swinging feeding mechanism; The time-controlled quantitative delivery mechanism is used to ensure the amount of solid medicine input; The self-swinging feeding mechanism is used to prevent blockage in the internal operation of the sewage treatment cylinder.

[0010] Furthermore, the time-controlled quantitative dosing mechanism includes a medicine tank installed above the sewage treatment cylinder, the top of the inner side of the medicine tank is evenly fixedly connected with a compression spring, the end of the compression spring away from the medicine tank is fixedly connected with a balance plate, the bottom of the medicine tank is evenly connected with a feed pipeline, the inside of the feed pipeline is installed with a butterfly valve, the upper end of the stirring shaft is fixedly connected with a threaded shaft, and the outer wall of the threaded shaft is threadedly connected with a trigger lever.

[0011] Furthermore, the interior of the medicine tank is divided into four storage bodies, each of which stores solid medicine, and a cylindrical guide rail is arranged at the center of the medicine tank.

[0012] Furthermore, one end of the balance board close to the cylindrical guide rail of the medicine tank is fixedly connected with a solid ball, the balance board and the medicine tank are slidably connected through the cylindrical guide rail and the solid ball, and the balance board is initially located at the uppermost end inside the medicine tank.

[0013] Furthermore, the conveying pipeline as a whole can be divided into three sections, the topmost section is funnel-shaped with a wide top and a narrow bottom, the middle section is cylindrical with a smooth inner wall, and the inner side wall of the lower end section is staggered and fixedly connected with inclined baffles.

[0014] Furthermore, the butterfly valve is located at the junction of the feed pipeline and the lower end of the medicine tank, a ball screw structure is formed between the threaded shaft and the trigger lever, and the control switches outside the butterfly valve are all located on the moving path of the trigger lever.

[0015] Furthermore, the self-swinging feeding mechanism includes a movable part fixedly connected to the outer wall of the stirring shaft, the outer wall of the movable part is fixedly connected to a filter plate, the inner wall of the sewage treatment cylinder is symmetrically fixedly connected to a clamping ring, the inner wall of the clamping ring is provided with an adaptation groove, the upper surface of the clamping ring is penetrated by a gasket shaft that is slidably connected, and a buffer bin is installed on the outside of the gasket shaft.

[0016] Furthermore, the movable part as a whole is composed of an inner ring, an outer ring and a plurality of movable springs, and the filter disc as a whole presents an arc shape that is gradually concave inwards.

[0017] Furthermore, a cylindrical convex shaft is fixedly connected to the outer wall of the filter disc, the adapting groove and the cylindrical convex shaft are in the same horizontal plane, and the filter disc and the clamping ring are rotatably connected through the cylindrical convex shaft and the adapting groove.

[0018] Furthermore, the adapter groove is in a corrugated shape as a whole, the gasket shaft is located at the top of the bending arc of the adapter groove as a whole, and the interior of the buffer bin is filled with polyurethane foam.

[0019] Compared with the prior art, the present invention has the following beneficial effects: (1) In order to solve the problem of the difficulty in controlling the amount of solid medicine in the prior art, the present device realizes the timed and quantitative delivery of solid medicine by the active coordination of the trigger lever and the balance plate. Firstly, by the stable reciprocating movement of the trigger lever, the butterfly valve switch is controlled in a timely manner, thereby realizing the timed delivery of solid medicine. The timed delivery method can control the delivery time of the medicine, avoid excessive congestion of the medicine, thereby improving the sewage treatment efficiency, and helping to maintain the balanced and stable concentration of the medicine. Secondly, through the installation design of the balance plate, the position can be automatically adjusted according to the delivery changes of the internal pressure of the medicine tank, thereby ensuring that the pressure inside the medicine tank is always balanced, thereby ensuring that the output amount of the medicine delivered each time remains consistent.

[0020] Compared with the one-time dosage method in the prior art, the present device avoids excessive dosage and waste of the agent by controlling the dosage at a fixed time and in a fixed quantity, improves the use efficiency of the agent, and at the same time reduces the stirring resistance of the stirring shaft, so that the solid agent and sewage are more fully mixed, thereby helping to extend the service life of the equipment and reduce maintenance costs.

[0021] (2) The upper end of the feed pipe in this device adopts a funnel shape that is wide at the top and narrow at the bottom. While ensuring a sufficiently large feeding opening, it can gradually narrow the reagent channel, thereby facilitating the smooth and continuous downward transportation of solid reagents. The middle part adopts a cylindrical design with a smooth inner wall, which can reduce the friction resistance between the reagents and the inner wall of the feed pipe and prevent the reagents from accumulating or clogging at the port of the feed pipe. More importantly, the inclined baffles staggered on the inner wall of the lower end can cause the solid reagents to produce multiple collision movements when passing through this area, thereby facilitating further dispersion and crushing of the reagents, increasing the contact area between the reagents and sewage, promoting faster and more uniform dissolution or dispersion of the reagents in sewage, and accelerating the reaction process between the reagents and harmful substances in sewage.

[0022] (3) In order to solve the clogging problem that occurs when solid medicine is added in the prior art, the device uses the curved surface design of the filter screen so that the solid medicine can move and fall freely at various positions along the curved surface slope, ensuring that the medicine can fully contact with the sewage in a wider area, thereby enhancing the dispersion of the medicine and avoiding the precipitation of the medicine due to gravity concentration during the addition process. Secondly, combined with the design of the corrugated adapter groove, it can generate regular vibrations when the filter screen passes through a specific position, thereby effectively removing impurities attached to the filter screen and preventing the mixing of solid medicine and impurities, thereby reducing the risk of filter screen clogging. By reducing the clogging phenomenon, it is ensured that sewage and impurities can pass through the filter screen smoothly, thereby improving the overall treatment efficiency and ensuring the stable operation of the equipment.

[0023] (4) This device provides necessary buffering for the rotating filter screen through the gasket shaft at the corner of the adapter groove, which can effectively absorb the impact force between the filter screen and the track and prevent the vibration or displacement of the equipment due to sudden force transmission. This stability reduces the deformation and wear of the filter screen to a certain extent. At the same time, according to the characteristics of polyurethane foam that hardens when subjected to force and returns to its original state when there is no load, when the filter screen passes through the corner, the cooperation between the gasket shaft and the polyurethane foam can effectively reduce the noise caused by friction and impact, thereby improving the working environment of the equipment during operation. In addition, through the characteristic buffering of the polyurethane material, it can also effectively reduce the impact and pressure concentration of the filter screen on the equipment structure during rotation, reduce the wear between the components, and thus reduce the risk of failure due to structural fatigue, and reduce the frequency of maintenance and replacement of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the time-controlled quantitative delivery mechanism of the present invention; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the medicine tank of the present invention; Figure 4 For the present invention Figure 3 A is a partial enlarged schematic diagram of the three-dimensional structure; Figure 5 This is an exploded view of the time-controlled quantitative delivery mechanism of the present invention; Figure 6 This is a schematic diagram of the internal three-dimensional structure of the sewage treatment cylinder of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the self-swinging feeding mechanism of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the movable part of the present invention; Fig. 9 This is an exploded view of the self-swinging feeding mechanism of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the clamp ring of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the partially enlarged three-dimensional structure at point B in the middle.

[0025] The numbers in the figure are: 1. Sewage treatment cylinder; 11. Stable bracket; 12. Drive motor; 13. Agitator shaft; 2. Time-controlled quantitative feeding mechanism; 21. Chemical tank; 22. Compression spring; 23. Balance plate; 24. Feed pipeline; 25. Butterfly valve; 26. Threaded shaft; 27. Trigger lever; 3. Self-swinging feed mechanism; 31. Moving parts; 32. Filter plate; 33. Retaining ring; 34. Adapter groove; 35. Gasket shaft; 36. Buffer bin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Figure 1As shown, a solid medicine delivery device for sewage treatment includes a sewage treatment barrel 1, a stabilizing bracket 11 is installed on the outer wall of the sewage treatment barrel 1, a driving motor 12 is installed on the bottom of the stabilizing bracket 11, a stirring shaft 13 is fixedly connected to the output shaft end of the driving motor 12, a water pipe is connected to the side wall of the sewage treatment barrel 1, a drainage pipe is connected to the bottom of the sewage treatment barrel 1, a time-controlled quantitative delivery mechanism 2 is arranged above the sewage treatment barrel 1, and a self-swinging feeding mechanism 3 is arranged inside the sewage treatment barrel 1.

[0028] like Figures 2 to 5 As shown, the time-controlled quantitative dosing mechanism 2 includes a medicine tank 21 installed above the sewage treatment cylinder 1, the top of the inner side of the medicine tank 21 is evenly fixedly connected with a compression spring 22, the end of the compression spring 22 away from the medicine tank 21 is fixedly connected with a balance plate 23, the bottom of the medicine tank 21 is evenly connected with a feed pipe 24, the inside of the feed pipe 24 is installed with a butterfly valve 25, the upper end of the stirring shaft 13 is fixedly connected with a threaded shaft 26, and the outer wall of the threaded shaft 26 is threadedly connected with a trigger lever 27.

[0029] It should be noted that the interior of the medicine tank 21 is divided into four bins, each of which stores solid medicine, and a cylindrical guide rail is provided at the center of the medicine tank 21. A solid ball is fixedly connected to one end of the balance plate 23 close to the cylindrical guide rail of the medicine tank 21. The balance plate 23 and the medicine tank 21 are slidably connected through the cylindrical guide rail and the solid ball, and the balance plate 23 is initially located at the uppermost end of the medicine tank 21. The butterfly valve 25 is located at the junction of the feed pipeline 24 and the lower end of the medicine tank 21. A ball screw structure is formed between the threaded shaft 26 and the trigger lever 27, and the control switches outside the butterfly valve 25 are all located on the moving path of the trigger lever 27.

[0030] Specifically, when the sewage is transported from the water pipe on the side wall of the sewage treatment barrel 1, the drive motor 12 is started to ensure that the stirring shaft 13 is in a continuous rotation state. At the same time, the threaded shaft 26 will rotate synchronously with the stirring shaft 13, and during the rotation of the threaded shaft 26, the trigger lever 27 will be driven to move vertically back and forth. When the trigger lever 27 abuts against the external control switch of the butterfly valve 25 during the movement, the butterfly valve 25 is turned to the open and closed state. At this time, the solid medicine in the four bins inside the medicine tank 21 will flow downward along the inside of the delivery pipe 24 , and as the threaded shaft 26 continues to rotate, the trigger lever 27 moves to the top and then performs a vertical downward reset movement. At this time, the trigger lever 27 again contacts the control switch outside the butterfly valve 25, thereby turning the butterfly valve 25 to a closed state. The butterfly valve 25 is then stably moved back and forth to control the opening and closing of the butterfly valve 25, thereby achieving timed delivery of solid medicines. The timed delivery method can control the delivery time of the medicines, avoid excessive congestion of the medicines, and thus improve the sewage treatment efficiency, and help maintain a balanced and stable concentration of the medicines.

[0031] It should be noted that the feed pipe 24 can be divided into three sections as a whole. The top portion is funnel-shaped, wide at the top and narrow at the bottom, the middle portion is cylindrical with a smooth inner wall, and the inner side wall of the lower portion is staggered and fixedly connected with inclined baffles.

[0032] Specifically, when the solid medicine flows along the inside of the feeding pipe 24, the funnel shape of the upper end of the feeding pipe 24, which is wide at the top and narrow at the bottom, can ensure a sufficiently large feeding port while gradually narrowing the medicine channel, thereby facilitating the smooth and continuous downward transportation of the solid medicine. Secondly, the smooth cylindrical inner wall of the middle part of the feeding pipe 24 can reduce the friction resistance between the medicine and the inner wall of the feeding pipe 24, and prevent the medicine from accumulating or clogging at the port of the feeding pipe 24. Finally, the inclined baffles staggered and fixedly connected to the inner wall of the lower end of the feeding pipe 24 can cause the solid medicine to produce multiple collision movements when passing through this area, thereby facilitating further dispersion and crushing of the medicine, promoting faster and more uniform dissolution or dispersion of the medicine in the sewage, and accelerating the reaction process between the medicine and harmful substances in the sewage.

[0033] Embodiment 2: Based on embodiment 1, Figures 6 to 11 As shown, the self-swinging feeding mechanism 3 includes a movable part 31 fixedly connected to the outer wall of the stirring shaft 13, the outer wall of the movable part 31 is fixedly connected to a filter plate 32, the inner wall of the sewage treatment cylinder 1 is symmetrically fixedly connected to a clamping ring 33, the inner wall of the clamping ring 33 is provided with an adapting groove 34, the upper surface of the clamping ring 33 is penetrated by a gasket shaft 35 which is slidably connected, and the outside of the gasket shaft 35 is installed with a buffer bin 36.

[0034] It should be noted that the movable part 31 is composed of an inner ring, an outer ring and a plurality of movable springs. The filter disc 32 as a whole presents an arc shape that is gradually concave inward. The outer wall of the filter disc 32 is fixedly connected with a cylindrical cam, and the adapting groove 34 is in the same horizontal plane as the cylindrical cam. The filter disc 32 and the retaining ring 33 are rotationally connected through the cylindrical cam and the adapting groove 34, and the adapting groove 34 is generally corrugated.

[0035] Specifically, when sewage is input into the sewage treatment barrel 1, some impurities and pollutants will remain on the surface of the filter disc 32. Since the filter disc 32 and the stirring shaft 13 are movably connected through the movable part 31, and according to the arc surface design of the filter disc 32, the solid medicine released from the feed pipe 24 can move and fall freely at various positions along the arc surface slope, thereby avoiding the accumulation and mixing of solid medicine in a certain part of the surface of the filter disc 32. When the stirring shaft 13 keeps rotating, the filter disc 32 will rotate synchronously with it, and when the cylindrical convex shaft on the outer wall of the filter disc 32 rotates to the position of the adapter groove 34, it will swing regularly along the corrugated inner wall of the adapter groove 34, thereby effectively removing impurities attached to the filter disc 32, preventing the mixing of solid medicine and impurities, thereby reducing the risk of blockage of the filter disc 32, and by reducing the blockage phenomenon, ensuring that sewage and impurities can pass through the filter disc 32 smoothly.

[0036] It should be noted that the gasket shaft 35 is entirely located at the top of the curved arc of the adapting groove 34 , and the interior of the buffer bin 36 is filled with polyurethane foam.

[0037] Specifically, when the cylindrical cam on the outer wall of the filter disc 32 moves to the topmost position of the inner wall of the adapter groove 34, the cylindrical cam itself will contact the gasket shaft 35, and then squeeze the gasket shaft 35 upward. At this time, the gasket shaft 35 moves upward and exerts pressure on the polyurethane foam inside the buffer bin 36. According to the characteristics of the polyurethane foam that it hardens when subjected to force and returns to its original state when there is no load, when the cylindrical cam passes through the inner corner position of the adapter groove 34, the cooperation between the gasket shaft 35 and the polyurethane foam can effectively reduce the noise generated by friction and impact, thereby improving the working environment of the equipment during operation. In addition, through the characteristic buffering of the polyurethane material, the impact and pressure concentration on the equipment structure of the filter disc 32 during rotation can be effectively reduced, thereby reducing the wear between the components.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid medicine delivery device for sewage treatment, comprising a sewage treatment cylinder (1), the outer wall of the sewage treatment cylinder (1) being mounted with a stabilizing bracket (11), the bottom of the stabilizing bracket (11) being mounted with a driving motor (12), the output shaft end of the driving motor (12) being fixedly connected with a stirring shaft (13), the side wall of the sewage treatment cylinder (1) being connected with a water pipe, and the bottom of the sewage treatment cylinder (1) being connected with a drainage pipe, characterized in that: A time-controlled quantitative delivery mechanism (2) is arranged above the sewage treatment cylinder (1), and a self-swinging material delivery mechanism (3) is arranged inside the sewage treatment cylinder (1); The time-controlled quantitative delivery mechanism (2) is used to ensure the amount of solid medicine input; The self-swinging material conveying mechanism (3) is used to prevent blockage in the internal operation of the sewage treatment cylinder (1).

2. The solid medicine delivery device for sewage treatment according to claim 1 is characterized in that: The time-controlled quantitative dosing mechanism (2) comprises a medicine tank (21) installed above the sewage treatment cylinder (1); a compression spring (22) is evenly and fixedly connected to the top of the inner side of the medicine tank (21); one end of the compression spring (22) away from the medicine tank (21) is evenly and fixedly connected to a balance plate (23); a feed pipe (24) is evenly connected to the lower side of the medicine tank (21); a butterfly valve (25) is installed inside the feed pipe (24); a threaded shaft (26) is fixedly connected to the upper end of the stirring shaft (13); and a trigger lever (27) is threadedly connected to the outer wall of the threaded shaft (26).

3. The solid medicine delivery device for sewage treatment according to claim 2 is characterized in that: The interior of the medicine tank (21) is divided into four bins, each of which stores solid medicine, and a cylindrical guide rail is arranged at the center of the medicine tank (21).

4. The solid medicine delivery device for sewage treatment according to claim 2 is characterized in that: A solid ball is fixedly connected to one end of the balance plate (23) close to the cylindrical guide rail of the medicine tank (21); the balance plate (23) and the medicine tank (21) are slidably connected via the cylindrical guide rail and the solid ball; and the balance plate (23) is initially located at the uppermost end inside the medicine tank (21).

5. The solid medicine delivery device for sewage treatment according to claim 2 is characterized in that: The conveying pipe (24) can be divided into three sections as a whole. The top section is in the shape of a funnel that is wide at the top and narrow at the bottom. The middle section is in the shape of a cylinder with a smooth inner wall. The inner side wall of the lower section is staggered and fixedly connected with inclined baffles.

6. The solid medicine delivery device for sewage treatment according to claim 2, characterized in that: The butterfly valve (25) is located at the junction of the feed pipe (24) and the lower end of the medicine tank (21), a ball screw structure is formed between the threaded shaft (26) and the trigger lever (27), and the control switches outside the butterfly valve (25) are all located on the moving path of the trigger lever (27).

7. The solid medicine delivery device for sewage treatment according to claim 1 is characterized in that: The self-swinging feeding mechanism (3) comprises a movable part (31) fixedly connected to the outer wall of the stirring shaft (13), the outer wall of the movable part (31) is fixedly connected to a filter plate (32), the inner wall of the sewage treatment cylinder (1) is symmetrically fixedly connected to a clamping ring (33), the inner wall of each of the clamping rings (33) is provided with an adapting groove (34), the upper surface of each of the clamping rings (33) is penetrated by a gasket shaft (35) in sliding connection, and a buffer bin (36) is installed on the outside of each of the gasket shafts (35).

8. The solid medicine delivery device for sewage treatment according to claim 7, characterized in that: The movable member (31) is composed of an inner ring, an outer ring and a plurality of movable springs, and the filter disc (32) is in the shape of an arc surface that gradually sinks inwards.

9. The solid medicine delivery device for sewage treatment according to claim 7, characterized in that: The outer wall of the filter disc (32) is fixedly connected to a cylindrical convex shaft, the adapting groove (34) and the cylindrical convex shaft are located at the same horizontal plane, and the filter disc (32) and the clamping ring (33) are rotatably connected via the cylindrical convex shaft and the adapting groove (34).

10. The solid medicine delivery device for sewage treatment according to claim 7, characterized in that: The adapting groove (34) is in a corrugated shape as a whole, the gasket shaft (35) is located as a whole at the top of the curved arc of the adapting groove (34), and the interior of the buffer bin (36) is filled with polyurethane foam.

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