A solid medicament feeding device for sewage treatment

Abstract

The application discloses a solid medicament feeding device for sewage treatment, and relates to the technical field of sewage treatment, which 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, a stirring shaft is fixedly connected to the output shaft end of the driving motor, and a water delivery pipe is communicated with the side wall of the sewage treatment cylinder. Through the active cooperation of the trigger abutting lever and the balance plate, a solid medicament feeding mode with timing and ration is realized. Firstly, the reciprocating movement of the trigger abutting lever is stable, the butterfly valve switch is controlled in timing, the feeding of the solid medicament is realized in timing, the feeding time of the medicament can be controlled through the feeding mode in timing, too much medicament is avoided to block, the sewage treatment efficiency is improved, and the balance and stability of the medicament concentration are maintained. Secondly, the balance plate can be automatically adjusted in position according to the conveying change of the internal pressure of the medicament tank, and the output amount of the medicament is kept consistent.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a solid reagent dispensing device for wastewater treatment. Background Technology

[0002] Solid chemical dosing equipment for wastewater treatment is an indispensable and important component in the wastewater treatment process. Its main function is to add chemical agents to the wastewater to promote a chemical reaction between the harmful substances in the wastewater and the agents, thereby purifying the wastewater and protecting the environment.

[0003] Chinese patent CN112158979B discloses a solid agent dispensing device for wastewater treatment, comprising: a base plate with multiple support rods connected to its outer side; an operating frame with the ends of the support rods installed between them; a square sliding sleeve connected to one side of the operating frame; a sliding plate slidably connected inside the square sliding sleeve; a water outlet plug located on one side of the bottom of the operating frame; a baffle plate connected to the upper part of one side of the sliding plate; and a stirring mechanism installed between the operating frame and the base plate. The dispensing mechanism is activated by water pressure, automatically dispensing the solid agent, and the stirring mechanism agitates the agent and wastewater.

[0004] However, the aforementioned comparative documents still have the following shortcomings in practical use:

[0005] 1. Although the device in the comparative document saves manpower in the process of adding solid agents, it is still essentially a one-time addition of solid agents. Adding solid agents all at once in the initial state of wastewater treatment will lead to overdosing, with some of them not being able to fully exert their effects and resulting in waste of agents. Furthermore, the agent concentration 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 also significantly increase the stirring resistance of the stirring shaft, making it difficult to ensure that the solid agents and wastewater are fully mixed.

[0006] 2. Furthermore, the equipment in the comparative document utilizes water pressure to drive the dispensing mechanism, achieving automatic dispensing of solid chemicals. Its essential working principle is to first inject sewage, and then filter and remove impurities from the sewage through a filter screen. Since the dispensing mechanism is located above the filter screen, some of the dispensed solid chemicals will come into contact with and mix with the debris on the filter screen, leading to the dispensing chemicals being blocked by the filter screen and making it difficult for them to pass through the filter screen smoothly and make full contact with the sewage below. This design method will affect the dispensing effect of the chemicals and the sewage treatment efficiency, because the chemicals cannot be evenly mixed with the sewage, resulting in a reduction in treatment effect.

[0007] 3. Regarding the structural installation and design in the comparative document, the device has multiple gear components in transmission. From the perspective of force transmission resistance, the transmission between multiple gear components increases friction loss, resulting in reduced energy conversion efficiency. Furthermore, each gear component's contact surface introduces additional friction, which leads to a larger gap between input and output power. From the perspective of equipment operational stability, too many gear components also increase equipment vibration and noise, especially when the stirring shaft is used for a long time and operates at high speed. Vibration can lead to accelerated equipment wear and even affect the overall structural stability of the equipment.

[0008] Therefore, in view of this, the present invention proposes a solid reagent dosing device for wastewater treatment to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0009] To address the aforementioned technical problems, the present invention provides a solid reagent dispensing device for wastewater treatment, thereby resolving the technical issues raised in the background section.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a solid agent dispensing device for sewage treatment, comprising a sewage treatment cylinder, a sturdy support installed on the outer wall of the sewage treatment cylinder, a drive motor installed at the bottom of the sturdy support, a stirring shaft fixedly connected to the output shaft end of the drive motor, a water supply pipe connected to the side wall of the sewage treatment cylinder, a drain pipe connected to the bottom of the sewage treatment cylinder, a time-controlled quantitative dispensing mechanism provided above the sewage treatment cylinder, and a self-swinging material conveying mechanism provided inside the sewage treatment cylinder;

[0011] The time-controlled and quantitative dispensing mechanism is used to ensure the amount of solid pharmaceutical agent input;

[0012] The self-swinging conveying mechanism is used to prevent blockages inside the sewage treatment cylinder.

[0013] Furthermore, the time-controlled quantitative dispensing mechanism includes a reagent tank installed above the sewage treatment cylinder. Compression springs are uniformly fixedly connected to the top of the inner side of the reagent tank. A balance plate is fixedly connected to the end of each compression spring away from the reagent tank. A conveying pipe is uniformly connected to the bottom of the reagent tank. A butterfly valve is installed inside each conveying pipe. A threaded shaft is fixedly connected to the upper end of the stirring shaft. A trigger stop rod is threadedly connected to the outer wall of the threaded shaft.

[0014] Furthermore, the interior of the medicine container is divided into four compartments, each containing a solid medicine, and a cylindrical guide rail is provided at the center of the medicine container.

[0015] Furthermore, a solid ball is fixedly connected to one end of the balance plate near the cylindrical guide rail of the medicine container. The balance plate and the medicine container are slidably connected through the cylindrical guide rail and the solid ball, and the balance plate is initially located at the uppermost part inside the medicine container.

[0016] Furthermore, the material conveying pipe can be divided into three sections: the uppermost section is funnel-shaped with a wider top and a narrower bottom; the middle section is cylindrical with a smooth inner wall; and the lower section has inclined baffles fixedly connected to its inner wall in an alternating manner.

[0017] Furthermore, the butterfly valve is located at the junction of the conveying pipeline and the lower end of the reagent tank, and the threaded shaft and the trigger rod form a ball screw structure. The control switches outside the butterfly valve are all located on the moving path of the trigger rod.

[0018] Furthermore, the self-swinging material conveying mechanism includes a movable component fixedly connected to the outer wall of the stirring shaft. A filter screen is fixedly connected to the outer wall of the movable component. A retaining ring is symmetrically fixedly connected to the inner side wall of the sewage treatment cylinder. Each retaining ring has an adapter groove on its inner side wall. A gasket shaft is slidably connected through the upper surface of each retaining ring. A buffer chamber is installed on the outside of each gasket shaft.

[0019] Furthermore, the movable component is composed of an inner ring, an outer ring, and multiple movable springs, and the filter screen has an overall arc shape that gradually concaves inward.

[0020] Furthermore, a cylindrical convex shaft is fixedly connected to the outer wall of the filter screen, the adapter groove and the cylindrical convex shaft are on the same horizontal plane, and the filter screen and the retaining ring are rotatably connected through the cylindrical convex shaft and the adapter groove.

[0021] Furthermore, the adapter groove is corrugated in shape, the gasket shaft is located at the top of the curvature of the adapter groove, and the interior of the buffer chamber is filled with polyurethane foam.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] (1) In order to solve the problem of difficulty in controlling the amount of solid agent in the existing technology, this device realizes the timed and quantitative dosing of solid agent by the active cooperation of trigger rod and balance plate. First, by the stable reciprocating movement of trigger rod, the butterfly valve is controlled at timed intervals, thus realizing the timed dosing of solid agent. The timed dosing method can control the dosing time of the agent, avoid excessive agent congestion and thus improve the wastewater treatment efficiency, and help maintain the balance and stability of agent concentration. Second, the installation design of balance plate can automatically adjust its position according to the pressure changes inside the agent tank, thus ensuring that the pressure inside the agent tank always remains balanced, and thus ensuring that the output amount of agent each time is consistent.

[0024] Compared to the one-time dosing method in existing technologies, this device controls the dosing by time and quantity, avoiding excessive dosing and waste, improving the efficiency of agent use, and reducing the stirring resistance of the stirring shaft. This allows for more thorough mixing of solid agents and wastewater, thereby helping to extend the service life of the equipment and reduce maintenance costs.

[0025] (2) The upper end of the conveying pipe in this device adopts a funnel shape that is wider at the top and narrower at the bottom. This can ensure a sufficiently large feeding port while gradually narrowing the agent channel, which helps the solid agent to be conveyed smoothly and continuously downward. The middle part adopts a cylindrical design with a smooth inner wall, which can reduce the frictional resistance between the agent and the inner wall of the conveying pipe and prevent the agent from accumulating or blocking at the port of the conveying pipe. More importantly, the inclined baffles installed alternately on the inner wall of the lower end can cause the solid agent to generate multiple collision movements when passing through this area, which helps to further disperse and break up the agent, increase the contact area between the agent and the sewage, promote the agent to dissolve or disperse in the sewage more quickly and evenly, and accelerate the reaction process between the agent and the harmful substances in the sewage.

[0026] (3) In order to solve the clogging problem that occurs when solid agents are added in the prior art, this device uses the arc surface design of the filter screen to allow the added solid agents to move and fall freely along the arc slope at various positions, ensuring that the agents can fully contact the sewage in a wider area, thereby enhancing the dispersibility of the agents and avoiding sedimentation caused by gravity concentration during the addition process. Secondly, combined with the design of the corrugated adapter groove, regular vibration can be generated when the filter screen passes through a specific position, thereby effectively removing impurities attached to the filter screen, preventing the mixing of solid agents and impurities, thereby reducing the risk of filter screen clogging. Furthermore, by reducing clogging, 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.

[0027] (4) This device provides necessary buffering for the rotating filter screen through the gasket shaft at the corner of the adapter slot, effectively absorbing the impact force between the filter screen and the track, preventing 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. Simultaneously, based on the characteristic of polyurethane foam hardening under stress and returning to its original shape when unloaded, the cooperation between the gasket shaft and the polyurethane foam effectively reduces noise generated by friction and impact when the filter screen passes through corners, thereby improving the working environment of the equipment. Furthermore, the buffering properties of polyurethane material effectively reduce the impact and pressure concentration on the equipment structure during filter screen rotation, reducing wear between components, thus reducing the risk of failure due to structural fatigue and lowering the frequency of maintenance and component replacement. Attached Figure Description

[0028] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 This is a three-dimensional structural diagram of the time-controlled quantitative dispensing mechanism of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the medicine container of the present invention;

[0031] Figure 4 For the present invention Figure 3 A magnified three-dimensional structural diagram of a portion of point A in the middle;

[0032] Figure 5 This is an exploded view of the time-controlled quantitative dispensing mechanism of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the wastewater treatment cylinder of the present invention;

[0034] Figure 7 This is a three-dimensional structural diagram of the self-swinging material conveying mechanism of the present invention;

[0035] Figure 8 This is a three-dimensional structural diagram of the movable component of the present invention;

[0036] Figure 9 This is an exploded view of the self-swinging material conveying mechanism of the present invention;

[0037] Figure 10 This is a schematic diagram of the three-dimensional structure of the retaining ring of the present invention;

[0038] Figure 11 For the present invention Figure 10 A magnified three-dimensional structural diagram of part B in the middle.

[0039] The following are the labels in the diagram: 1. Wastewater treatment cylinder; 11. Stable support; 12. Drive motor; 13. Stirring shaft; 2. Time-controlled quantitative dispensing mechanism; 21. Chemical tank; 22. Compression spring; 23. Balance plate; 24. Conveying pipe; 25. Butterfly valve; 26. Threaded shaft; 27. Trigger rod; 3. Self-swinging conveying mechanism; 31. Moving part; 32. Filter screen; 33. Snap ring; 34. Adaptor groove; 35. Gasket shaft; 36. Buffer chamber. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1: As Figure 1 As shown, a solid agent dispensing device for sewage treatment includes a sewage treatment cylinder 1. A stabilizing support 11 is installed on the outer wall of the sewage treatment cylinder 1. A drive motor 12 is installed at the bottom of the stabilizing support 11. A stirring shaft 13 is fixedly connected to the output shaft end of the drive motor 12. A water supply pipe is connected to the side wall of the sewage treatment cylinder 1. A drain pipe is connected to the bottom of the sewage treatment cylinder 1. A timed and quantitative dispensing mechanism 2 is provided above the sewage treatment cylinder 1. A self-swinging material conveying mechanism 3 is provided inside the sewage treatment cylinder 1.

[0042] like Figures 2 to 5 As shown, the timed and quantitative dispensing mechanism 2 includes a reagent tank 21 installed above the sewage treatment cylinder 1. Compression springs 22 are uniformly fixedly connected to the top of the inner side of the reagent tank 21. Balance plates 23 are fixedly connected to the ends of the compression springs 22 away from the reagent tank 21. A conveying pipe 24 is uniformly connected to the bottom of the reagent tank 21. Butterfly valves 25 are installed inside the conveying pipe 24. A threaded shaft 26 is fixedly connected to the upper end of the stirring shaft 13. A trigger rod 27 is threadedly connected to the outer wall of the threaded shaft 26.

[0043] It should be noted that the interior of the medicine tank 21 is divided into four compartments, each containing solid medicine. A cylindrical guide rail is located at the center of the medicine tank 21. A solid ball is fixedly connected to one end of the balance plate 23 near 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. The balance plate 23 is initially located at the top of the medicine tank 21. The butterfly valve 25 is located at the junction of the conveying pipe 24 and the lower end of the medicine tank 21. The threaded shaft 26 and the trigger rod 27 form a ball screw structure. The control switches outside the butterfly valve 25 are all located on the movement path of the trigger rod 27.

[0044] Specifically, after the sewage is transported from the water supply pipe on the side wall of the sewage treatment cylinder 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. During the rotation of the threaded shaft 26, it will drive the trigger rod 27 to move vertically back and forth. When the trigger rod 27 abuts against the external control switch of the butterfly valve 25 during its movement, the butterfly valve 25 turns into the open / closed state. At this time, the solid agents in the four compartments inside the chemical tank 21 will flow downward along the inside of the conveying pipe 24. As the threaded shaft 26 continues to rotate, the trigger rod 27 moves to the top and then moves vertically downwards to reset. At this time, the trigger rod 27 again contacts the control switch outside the butterfly valve 25, thereby turning the butterfly valve 25 into the closed state. Through the stable reciprocating movement of the butterfly valve 25, the opening and closing of the butterfly valve 25 are controlled, realizing the timed dosing of solid agents. The timed dosing method can control the dosing time of the agents, avoid excessive agent congestion, thereby improving the wastewater treatment efficiency and helping to maintain the balance and stability of the agent concentration.

[0045] It should be noted that the material conveying pipe 24 can be divided into three sections. The uppermost section is funnel-shaped with a wider top and a narrower bottom, the middle section is cylindrical with a smooth inner wall, and the lower section has inclined baffles fixedly connected to the inner side wall in an alternating manner.

[0046] Specifically, when the solid agent flows along the inside of the conveying pipe 24, the funnel shape at the top (wider at the top and narrower at the bottom) of the conveying pipe 24 ensures a sufficiently large feeding opening while gradually narrowing the agent channel, thus facilitating the smooth and continuous downward transport of the solid agent. Secondly, the smooth cylindrical inner wall of the middle part of the conveying pipe 24 reduces the frictional resistance between the agent and the inner wall of the conveying pipe 24, preventing the agent from accumulating or clogging at the port of the conveying pipe 24. Finally, the inclined baffles fixedly connected to the inner side wall at the lower end of the conveying pipe 24 cause multiple collisions of the solid agent as it passes through this area, which further disperses and breaks up the agent, promoting faster and more uniform dissolution or dispersion of the agent in the wastewater and accelerating the reaction process between the agent and harmful substances in the wastewater.

[0047] Example 2: Based on Example 1, such as Figures 6 to 11 As shown, the self-swinging material conveying mechanism 3 includes a movable part 31 fixedly connected to the outer wall of the stirring shaft 13. A filter screen 32 is fixedly connected to the outer wall of the movable part 31. A retaining ring 33 is symmetrically fixedly connected to the inner side wall of the sewage treatment cylinder 1. Each retaining ring 33 has an adapter groove 34 on its inner side wall. A gasket shaft 35 is slidably connected through the upper surface of each retaining ring 33. A buffer chamber 36 is installed on the outside of each gasket shaft 35.

[0048] It should be noted that the movable part 31 is composed of an inner ring, an outer ring, and multiple movable springs. The filter screen 32 has a gradually concave arc shape. A cylindrical convex shaft is fixedly connected to the outer wall of the filter screen 32. The adapter groove 34 is on the same horizontal plane as the cylindrical convex shaft. The filter screen 32 and the retaining ring 33 are rotatably connected through the cylindrical convex shaft and the adapter groove 34. The adapter groove 34 has a corrugated shape.

[0049] Specifically, when wastewater enters the wastewater treatment cylinder 1, some impurities and pollutants remain on the surface of the filter screen 32. Since the filter screen 32 and the stirring shaft 13 are movably connected through the moving part 31, and according to the arc design of the filter screen 32, the solid agent put in from the conveying pipe 24 can move and fall freely at various positions along the arc slope, thereby avoiding the accumulation and mixing of solid agents on a certain part of the surface of the filter screen 32. When the stirring shaft 13 is rotating, the filter screen 32 will rotate synchronously with it. When the cylindrical convex shaft on the outer wall of the filter screen 32 rotates to the position of the adapter groove 34, it will swing regularly along the corrugated inner sidewall of the adapter groove 34, thereby effectively removing impurities attached to the filter screen 32, preventing the mixing of solid agents and impurities, thereby reducing the risk of filter screen 32 clogging, and by reducing clogging, ensuring that wastewater and impurities can pass smoothly through the filter screen 32.

[0050] It should be noted that the gasket shaft 35 is located at the top of the curvature of the adapter groove 34, and the interior of the buffer chamber 36 is filled with polyurethane foam.

[0051] Specifically, when the cylindrical convex shaft on the outer wall of the filter screen 32 moves to the top of the inner wall of the adapter groove 34, the cylindrical convex shaft itself will contact the gasket shaft 35, thereby squeezing the gasket shaft 35 upward. At this time, the gasket shaft 35 moves upward and applies pressure to the polyurethane foam inside the buffer chamber 36. According to the characteristic of polyurethane foam to harden under pressure and return to its original shape when there is no load, when the cylindrical convex shaft passes through the corner position inside 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 buffering properties of polyurethane material, the impact and pressure concentration on the equipment structure during the rotation of the filter screen 32 can also be effectively reduced, reducing the wear between the components.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid agent dispensing device for sewage treatment, comprising a sewage treatment cylinder (1), wherein a stabilizing bracket (11) is installed on the outer wall of the sewage treatment cylinder (1), a drive motor (12) is installed at the bottom of the stabilizing bracket (11), a stirring shaft (13) is fixedly connected to the output shaft end of the drive motor (12), a water supply pipe is connected to the side wall of the sewage treatment cylinder (1), and a drain pipe is connected to the bottom of the sewage treatment cylinder (1), characterized in that: A time-controlled quantitative dispensing mechanism (2) is provided above the sewage treatment cylinder (1), and a self-swinging material conveying mechanism (3) is provided inside the sewage treatment cylinder (1). The time-controlled quantitative dispensing mechanism (2) is used to ensure the amount of solid medicine input; The self-swinging conveying mechanism (3) is used to prevent blockage inside the sewage treatment cylinder (1); The timed and quantitative dispensing mechanism (2) includes a reagent tank (21) installed above the sewage treatment cylinder (1). Compression springs (22) are uniformly fixedly connected to the top of the inner side of the reagent tank (21). A balance plate (23) is fixedly connected to the end of the compression spring (22) away from the reagent tank (21). A conveying pipe (24) is uniformly connected to the bottom of the reagent tank (21). A butterfly valve (25) is installed inside the conveying pipe (24). A threaded shaft (26) is fixedly connected to the upper end of the stirring shaft (13). A trigger rod (27) is threadedly connected to the outer wall of the threaded shaft (26). A solid ball is fixedly connected to one end of the balance plate (23) near 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. The balance plate (23) is initially located at the uppermost end inside the medicine tank (21). The butterfly valve (25) is located at the junction of the material conveying pipe (24) and the lower end of the medicine tank (21). The threaded shaft (26) and the trigger rod (27) form a ball screw structure. The control switches outside the butterfly valve (25) are all located on the moving path of the trigger rod (27).

2. The solid reagent dosing device for wastewater treatment according to claim 1, characterized in that: The interior of the medicine container (21) is divided into four compartments, each containing a solid medicine, and a cylindrical guide rail is provided at the center of the medicine container (21).

3. A solid reagent dosing device for wastewater treatment according to claim 1, characterized in that: The material conveying pipe (24) is divided into three sections. The uppermost section is funnel-shaped with a wider top and a narrower bottom. The middle section is cylindrical with a smooth inner wall. Inclined baffles are fixedly connected to the inner side wall of the lower section.

4. A solid reagent dosing device for wastewater treatment according to claim 1, characterized in that: The self-swinging material conveying mechanism (3) includes a movable part (31) fixedly connected to the outer wall of the stirring shaft (13). A filter screen (32) is fixedly connected to the outer wall of the movable part (31). A retaining ring (33) is symmetrically fixedly connected to the inner wall of the sewage treatment cylinder (1). An adapter groove (34) is provided on the inner wall of each retaining ring (33). A gasket shaft (35) is slidably connected through the upper surface of each retaining ring (33). A buffer chamber (36) is installed on the outside of each gasket shaft (35).

5. A solid reagent dosing device for wastewater treatment according to claim 4, characterized in that: The movable part (31) is composed of an inner ring, an outer ring and multiple movable springs, and the filter screen (32) presents an arc shape that gradually concaves inward.

6. A solid reagent dosing device for wastewater treatment according to claim 4, characterized in that: The outer wall of the filter disc (32) is fixedly connected to a cylindrical convex shaft. The adapter groove (34) is on the same horizontal plane as the cylindrical convex shaft. The filter disc (32) and the retaining ring (33) are rotatably connected through the cylindrical convex shaft and the adapter groove (34).

7. A solid reagent dosing device for wastewater treatment according to claim 4, characterized in that: The adapter groove (34) is corrugated in shape, the gasket shaft (35) is located at the top of the curvature of the adapter groove (34), and the buffer chamber (36) is filled with polyurethane foam.

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