A wastewater treatment device for producing cinnamaldehyde

Abstract

The application relates to the technical field of wastewater treatment, in particular to a wastewater treatment device for producing cinnamyl aldehyde, which comprises a wastewater treatment tank, a rotating rod is rotationally connected to the wastewater treatment tank, a material scattering assembly for uniformly adding catalyst into an aerobic tank is arranged on the rotating rod, the material scattering assembly comprises a mounting ring sleeved on the rotating rod and a hollow material scattering rod in communication with the mounting ring, a plurality of material scattering ports are arranged on the upper and lower surfaces of the material scattering rod, a plurality of control members for controlling the opening or closing of the material scattering ports are arranged on the material scattering rod, and the cross section of the material scattering rod is asymmetrically streamlined. The application has the effect that the catalyst can be more uniformly put into the aerobic tank.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment equipment, and in particular to a wastewater treatment device for the production of cinnamaldehyde. Background Technology

[0002] Cinnamaldehyde, an important fine chemical product widely used in fragrances, pharmaceuticals, and food preservatives, often generates large amounts of organic wastewater during its chemical synthesis. This wastewater is characterized by high organic concentrations, complex composition, and generally poor biodegradability; improper treatment can cause significant pollution to aquatic environments. Currently, the industry commonly employs a combined anaerobic-aerobic biological process for its treatment. The aerobic stage often involves adding specialized catalysts to enhance microbial activity, accelerate the oxidative decomposition of pollutants in the wastewater, and improve overall treatment efficiency.

[0003] In practical engineering applications, existing cinnamaldehyde wastewater treatment devices have many shortcomings in the solid catalyst addition process. Traditional addition methods often involve liquid or gas jet stirring, mechanical stirring paddles, and multi-point feeding pipes. During the catalyst addition process, the catalyst tends to settle at the bottom after entering the water body, making it difficult to quickly diffuse to different depths of the tank. This results in severely uneven catalyst distribution, with excessively high local concentrations and low overall utilization, which not only affects the treatment effect but also wastes raw materials. Summary of the Invention

[0004] This application provides a wastewater treatment device for the production of cinnamaldehyde, aiming to solve the problem in related technologies that high-density solid catalysts in jet or stirring methods are prone to local deposition at the addition point and are difficult to distribute evenly throughout the entire depth of the treatment equipment.

[0005] The wastewater treatment device for the production of cinnamaldehyde provided in this application adopts the following technical solution: A wastewater treatment device for the production of cinnamaldehyde includes a wastewater treatment tank. A mounting frame is installed above the wastewater treatment tank, and a rotating rod is rotatably connected to the mounting frame. A feeding assembly for uniformly adding a catalyst into an aerobic tank is installed on the rotating rod. The feeding assembly includes a mounting ring sleeved on the rotating rod and a hollow feeding rod communicating with the mounting ring. Multiple feeding ports are provided on the upper and lower surfaces of the feeding rod. Multiple control components are provided on the feeding rod to control the opening or closing of the feeding ports. The cross-section of the feeding rod is designed as an asymmetrical streamlined shape, as observed along its vertical movement direction. The cross-section has an upstream front end and a downstream rear end, and the arc length or curvature of the upper surface of the dispensing rod from the front end to the rear end is greater than the arc length or curvature of its lower surface. Thus, when the dispensing rod moves upward, its upper surface forms a low-pressure zone relative to the lower surface. During the upward movement of the dispensing rod, the control element opens the dispensing port located on the upper surface of the dispensing rod and closes the dispensing port located on the lower surface, and the catalyst is drawn out from the dispensing port on the upper surface of the dispensing rod. During the downward movement of the dispensing rod, the control element opens the dispensing port located on the lower surface of the dispensing rod and closes the dispensing port located on the upper surface, and the catalyst is drawn out from the dispensing port on the lower surface of the dispensing rod.

[0006] The effects are as follows: When the dispensing rod moves relative to the wastewater, its asymmetric streamlined cross-section creates a low-pressure zone near the upper or lower surface of the dispensing rod, thereby drawing the catalyst out from the corresponding dispensing port. During the upward movement of the dispensing rod, the control mechanism opens the dispensing port on the upper surface and closes the dispensing port on the lower surface, allowing the catalyst to be drawn out from the port on the upper surface. Similarly, during the downward movement of the dispensing rod, the control mechanism opens the dispensing port on the lower surface and closes the dispensing port on the upper surface, allowing the catalyst to be drawn out from the port on the lower surface. Furthermore, during catalyst addition, the catalyst is not mixed using external fluid dynamics or overall stirring, but rather carried to different water depths by the movement of the dispensing rod itself and released in situ. This achieves uniform initial catalyst distribution, avoids excessively high local concentrations, and allows for better contact between the wastewater and the catalyst, while also increasing the reaction rate.

[0007] Optionally, an installation frame is provided above the wastewater treatment tank, and a feeding assembly is provided on the installation frame. The feeding assembly is used to add the configured catalyst into the feeding assembly. The feeding assembly includes a feeding hopper fixed on the installation frame, a feeding pipe fixed on the feeding hopper, a feeding disc fixed on the feeding pipe, and a feeding rod fixed on the feeding disc. The feeding disc is a hollow structure, and one end of the feeding pipe is connected to the interior of the feeding disc. The feeding rod is provided with a discharge port, and the catalyst in the feeding rod enters the installation ring through the discharge port.

[0008] Optionally, the feeding rod is provided with a first sealing component for blocking the discharge port. The first sealing component includes a first sealing rod slidably connected to the side of the feeding rod and a first sealing spring fixed to the first sealing rod. The end of the first sealing spring away from the first sealing rod is fixed to the feeding rod, and the first sealing spring is used to push the first sealing rod to move downward, so that the downwardly moving first sealing rod blocks the discharge port.

[0009] Optionally, the mounting ring is provided with a feed inlet, which is arranged around the rotating rod. The mounting ring is provided with a second sealing assembly for sealing the feed inlet. The second sealing assembly includes a second sealing plate slidably connected to the mounting ring and a second sealing spring fixed to the second sealing plate. The end of the second sealing spring away from the second sealing plate is fixed to the mounting ring, and the second sealing spring pushes the second sealing plate to seal the feed inlet.

[0010] Optionally, the first sealing rod is provided with an abutment plate, which is set perpendicular to the first sealing rod. During the process of the mounting ring driving the feeding rod to move upward, the upper surface of the mounting ring abuts against the abutment plate, and the lower end face of the feeding rod abuts against the second sealing plate.

[0011] Optionally, the drive assembly includes a threaded groove on the surface of the rotating rod and a threaded block fixed on the mounting ring. The threaded block engages with the threaded groove and is rotatably connected within the threaded groove. The mounting ring is threadedly connected to the rotating rod via the threaded block.

[0012] Optionally, the pushing assembly includes a first pushing rod and a second pushing rod, both of which are mounted on a rotating rod. Threaded blocks are provided on the first and second pushing rods, and the first pushing rod, the second pushing rod, and the rotating rod are threadedly connected through the threaded blocks and threaded grooves. The first pushing rod is positioned above the mounting ring, and the second pushing rod is positioned below the mounting ring. The first pushing rod and the second pushing rod are slidably connected to the inner wall of the aerobic tank.

[0013] Optionally, the mounting frame is provided with a control component for driving the rotating rod to rotate. During the forward and reverse rotation of the rotating rod, the first push rod and the second push rod will move up and down. The control component includes a driving wheel fixed on the rotating rod, a driven wheel rotatably connected to the mounting frame, and a connecting belt wound around the driving wheel and the driven wheel. The mounting frame is provided with a control motor, and the output shaft of the control motor is fixedly connected to the driven wheel.

[0014] Optionally, the spreading rod is inclined, with the height of one end of the spreading rod fixed to the mounting ring being higher than the height of the other end.

[0015] Optionally, two feeding rods are provided, both of which are hollow structures, and the upper end of the feeding rods is connected to the inside of the mounting ring.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. During the catalyst addition process, the catalyst is not mixed by external fluid power or overall stirring. Instead, the catalyst is carried to different water depths by the movement of the feeding rod and released in situ. This achieves uniform initial distribution of the catalyst, avoids excessively high local concentrations, and allows the wastewater to contact the catalyst better, thereby increasing the reaction rate.

[0017] 2. Due to the inclined setting of the feeding rod, after the feeding rod adds the catalyst into the mounting ring, the catalyst in the mounting ring flows into the feeding rod better, thus facilitating the addition of the catalyst. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of the wastewater treatment tank according to an embodiment of this application.

[0020] Figure 3 This is a front view of the material spreading component and the material feeding component according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the first sealing component in an embodiment of this application.

[0022] Figure 5 This is a cross-sectional view of the mounting ring according to an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of the feed inlet structure according to an embodiment of this application.

[0024] Figure 7 This is a schematic diagram of the structure of the feeding rod moving into the mounting ring according to an embodiment of this application.

[0025] Figure 8 This is a schematic diagram of the material spreading rod structure according to an embodiment of this application.

[0026] Reference numerals: 01, Wastewater treatment tank; 02, Mounting frame; 03, Rotating rod; 1, Feeding assembly; 11, Feeding hopper; 12, Feeding pipe; 13, Feeding rod; 14, Feeding tray; 15, Discharge port; 2, Spreading assembly; 21, Mounting ring; 22, Spreading rod; 23, Inlet; 3, First sealing assembly; 31, First sealing rod; 32, First sealing spring; 4, Second sealing assembly; 41, Second sealing plate; 42, Second sealing spring; 51, Spreading port; 52, Abutment plate; 6, Drive assembly; 61, Threaded groove; 62, Threaded block; 7, Push assembly; 71, First push rod; 72, Second push rod; 8, Control assembly; 81, Drive wheel; 82, Driven wheel; 83, Connecting belt; 84, Control motor. Detailed Implementation

[0027] The following combination Figures 1-8 The aerobic tank in this application will be described in further detail.

[0028] This application discloses a wastewater treatment device for the production of cinnamaldehyde. (Refer to...) Figures 1 to 8 A wastewater treatment device for producing cinnamaldehyde includes a wastewater treatment tank 01 and multiple partition plates installed within the wastewater treatment tank 01. The partition plates divide the wastewater treatment tank 01 into an aerobic tank and an anaerobic tank. A positioning aeration device is installed to introduce oxygen into the aerobic tank to improve the reaction rate of the catalyst. An installation frame 02 is installed above the anaerobic tank or the aerobic tank. A feeding component 1 and a spreading component 2 are installed on the installation frame 02. The feeding component 1 is used to add the prepared catalyst into the spreading component 2. The spreading component 2 evenly adds the catalyst into the aerobic tank and can add it at different heights along the aerobic tank, so that the catalyst reacts with the wastewater in the aerobic tank.

[0029] The feeding assembly 1 includes a feeding hopper 11 fixed on the mounting frame 02, a feeding pipe 12 fixed on the feeding hopper 11, a feeding disc 14 fixed on the feeding pipe 12, and a feeding rod 13 fixed on the feeding disc 14. The feeding disc 14 is a hollow structure, and one end of the feeding pipe 12 is connected to the interior of the feeding disc 14.

[0030] A first sealing component 3 is provided on the feeding rod 13. The first sealing component 3 is used to block the discharge port 15. At this time, the catalyst in the feeding rod 13 cannot flow out from the discharge port 15, and then the catalyst cannot be added to the spreading component 2. When the spreading component 2 moves to the top, the first sealing component 3 no longer blocks the discharge port 15, and then the catalyst in the feeding rod 13 can enter the spreading component 2 through the discharge port 15.

[0031] In this embodiment, two feeding rods 13 are provided, both of which are hollow structures. The upper end of the feeding rod 13 is connected to the inside of the mounting ring 21, while the lower end is sealed. The discharge port 15 is located on the side of the feeding rod 13. The use of two feeding rods 13 makes it easier to add catalyst into the spreading assembly 2. The dual feeding rods 13 improve the catalyst delivery efficiency and facilitate the rapid replenishment of catalyst into the spreading assembly 2.

[0032] A rotating rod 03 is rotatably connected to the mounting frame 02. The feeding assembly 2 slides on the rotating rod 03. The feeding assembly 2 includes a mounting ring 21 sleeved on the rotating rod 03 and a feeding rod 22 for communicating with the mounting ring 21. Both the mounting ring 21 and the feeding rod 22 are hollow structures. The mounting ring 21 and the feeding rod 22 are connected. At the same time, a feed inlet 23 is provided on the mounting ring 21, which is arranged around the rotating rod 03. A second sealing assembly 4 is provided on the mounting ring 21 for sealing the feed inlet 23. When the mounting ring 21 is in the aerobic tank, the second sealing assembly 4 seals the feed inlet 23, which can reduce the outflow of catalyst in the mounting ring 21.

[0033] When the mounting ring 21 is at its highest position, the first sealing component 3 no longer seals the outlet 15, and the second sealing component 4 no longer seals the inlet 23. At this time, the catalyst in the feeding rod 13 will enter the mounting ring 21 through the outlet 15 and the inlet 23, and finally enter the spreading rod 22 through the mounting ring 21.

[0034] A drive assembly 6 is provided on the rotating rod 03. The drive assembly 6 is used to drive the mounting ring 21 to rotate. In addition, a push assembly 7 is provided on the rotating rod 03. The push assembly 7 is used to drive the mounting ring 21 to move up and down. Then, the spreading rod 22 can rotate while moving up and down. During the rotation, the spreading rod 22 stirs and mixes the catalyst and wastewater put into the aerobic tank, so as to improve the wastewater treatment effect.

[0035] Multiple dispensing ports 51 are provided on the upper and lower surfaces of the dispensing rod 22. The diameter of the dispensing ports 51 is larger than the diameter of the catalyst, so that the catalyst inside the dispensing rod 22 can flow out through the dispensing ports 51. Multiple control components (not shown in the figure) are provided on the dispensing rod 22. The multiple control components correspond one-to-one with the multiple dispensing ports 51. The control components are used to control the opening or closing of the dispensing ports 51. The cross-section of the dispensing rod 22 is set as an asymmetrical streamlined shape. Specifically, when viewed along its up and down moving direction, the cross-section has a front end facing the flow and a rear end facing away from the flow. Furthermore, the arc length or curvature of the upper surface of the dispensing rod 22 from the front end to the rear end is greater than the arc length or curvature of its lower surface.

[0036] The control component is a micro-mechanical control valve. When the dispensing rod 22 is stationary or not in use, the micro-mechanical control valve blocks the dispensing port 51. Since the micro-mechanical control valve is existing technology, its specific structure and working principle will not be described in detail in this embodiment. A concentration sensor is installed on the dispensing rod 22, and a controller is installed on the mounting bracket 02. The controller is connected to the concentration sensor and the mechanical control valve. The concentration sensor is used to monitor the catalyst concentration at different water depths in real time and then feeds the signal back to the controller. The controller dynamically transmits the feedback signal to the push assembly 7, which adjusts the up-and-down movement speed, dwell time, or rotation angle of the dispensing rod 22. For example, when a low concentration is detected in a certain area, the speed of the dispensing rod 22 passing through that area is automatically reduced or the number of reciprocating strokes of the dispensing rod 22 is increased.

[0037] When the feed rod 22 moves upward, the control unit opens the feed port 51 on the upper surface and closes the feed port 51 on the lower surface. The wastewater flows downward relative to the feed rod 22. Due to the greater curvature of the upper surface, the flow velocity of the downward-flowing wastewater at the upper surface of the feed rod 22 increases significantly. According to Bernoulli's principle, the increased flow velocity leads to a decrease in pressure, forming a low-pressure zone near the upper surface of the feed rod 22. Meanwhile, the curvature of the lower surface of the feed rod 22 is smaller, and the wastewater flows relatively slowly, forming a high-pressure zone.

[0038] Under this pressure distribution, the low-pressure zone on the upper surface of the feed rod 22 exerts a suction effect on the catalyst inside the feed rod 22, causing the catalyst to be drawn out from the feed port 51 on the upper surface of the feed rod 22 and enter the wastewater. Simultaneously, the high-pressure zone on the lower surface of the feed rod 22 compresses the feed port 51 on the lower surface, preventing the catalyst from flowing out from the lower surface. Since Bernoulli's principle is existing technology, its specific working principle will not be described in detail in this embodiment.

[0039] During the downward movement of the installation ring 21, the first sealing component 3 seals the outlet 15, and the second sealing component 4 seals the inlet 23. When the spreading rod 22 moves downward, the control component opens the spreading port 51 on the lower surface and seals the spreading port 51 on the upper surface. The wastewater flows upward relative to the spreading rod 22. Due to the asymmetry of the cross-sectional shape, the upward-flowing wastewater first passes through the lower surface of the spreading rod 22 with a smaller curvature, then bypasses the tail and flows through the upper surface of the spreading rod 22 with a larger curvature. Under this flow path, the lower surface of the spreading rod 22 becomes the side with a faster flow velocity, forming a low-pressure zone; the upper surface of the spreading rod 22 becomes the side with a slower flow velocity, forming a high-pressure zone. At this time, the low-pressure zone at the lower surface of the spreading rod 22 draws the catalyst out from the spreading port 51 on the lower surface of the spreading rod 22; while the high-pressure zone at the upper surface of the spreading rod 22 prevents the catalyst from flowing out from the upper surface.

[0040] In this embodiment, as the mounting ring 21 moves up and down, it drives the spreading rod 22 to move up and down as well, allowing the catalyst to be sprinkled into different heights in the aerobic tank, thus facilitating catalyst addition. To facilitate the entry of the catalyst from the mounting ring 21 into the spreading rod 22, the bottom wall of the spreading rod 22 is inclined in this embodiment. The catalyst entering the mounting ring 21 then flows into the spreading rod 22 under gravity, thereby facilitating the addition of catalyst into the spreading rod 22.

[0041] The first sealing assembly 3 includes a first sealing rod 31 slidably connected to the side of the feeding rod 13 and a first sealing spring 32 fixed to the first sealing rod 31. The end of the first sealing spring 32 away from the first sealing rod 31 is fixed to the feeding rod 13, and the first sealing spring 32 is used to push the first sealing rod 31 downward, so that the downwardly moving first sealing rod 31 blocks the discharge port 15. When the first sealing rod 31 is pushed upward, the first sealing spring 32 is in a compressed state, and then the discharge port 15 is in an open state. The catalyst in the feeding rod 13 will flow into the aerobic tank through the discharge port 15, and can also enter the mounting ring 21.

[0042] The second sealing assembly 4 includes a second sealing plate 41 slidably connected to the mounting ring 21 and a second sealing spring 42 fixed to the second sealing plate 41. The end of the second sealing spring 42 away from the second sealing plate 41 is fixed to the mounting ring 21, and the second sealing spring 42 pushes the second sealing plate 41 to seal the feed inlet 23. When it is necessary to add catalyst into the mounting ring 21, the second sealing plate 41 is pushed down, the second sealing spring 42 is compressed, the second sealing plate 41 moves into the mounting ring 21, and the feed inlet 23 is opened. At this time, it is convenient to add catalyst into the mounting ring 21. The catalyst in the mounting ring 21 will enter the feeding rod 22 under the action of gravity.

[0043] An abutment plate 52 is provided on the first sealing rod 31. The abutment plate 52 is set perpendicular to the first sealing rod 31. During the process of the mounting ring 21 driving the spreading rod 22 to move upward, the upper surface of the mounting ring 21 abuts against the abutment plate 52, and at the same time, the lower end face of the feeding rod 13 abuts against the second sealing plate 41. The mounting ring 21 pushes the abutment plate 52 to move upward, and then the discharge port 15 is opened. The first sealing spring 32 is in a compressed state. The feeding rod 13 pushes the second sealing plate 41 to move downward. The second sealing plate 41 moves into the mounting ring 21, and the second sealing spring 42 is compressed. The catalyst in the feeding rod 13 enters the mounting ring 21 through the feed port 23, and finally enters the spreading rod 22 through the mounting ring 21.

[0044] During the downward movement of the mounting ring 21, the compressed second sealing spring 42 pushes the second sealing plate 41 upward, causing the second sealing plate 41 to block the feed port 23. The abutment plate 52 no longer abuts against the upper surface of the mounting ring 21. The first sealing spring 32 pushes the first sealing rod 31 downward, and the downward-moving first sealing rod 31 blocks the discharge port 15, reducing the spillage of catalyst in the feeding rod 13.

[0045] The drive assembly 6 includes a threaded groove 61 on the surface of the rotating rod 03 and a threaded block 62 fixed on the mounting ring 21. The threaded block 62 engages with the threaded groove 61 and is rotatably connected within the threaded groove 61. Through the arrangement of the threaded block 62 and the threaded groove 61, the mounting ring 21 is threadedly connected to the rotating rod 03. During the process of the push assembly 7 pushing the mounting ring 21 to move up and down, under the action of the threaded block 62 and the threaded groove 61, the mounting ring 21 will also rotate around the axis of the rotating rod 03 while moving up and down. This allows the mounting ring 21 to move and rotate at the same time, thereby making the catalyst in the spreading rod 22 more evenly added to the aerobic tank.

[0046] The pushing assembly 7 includes a first pushing rod 71 and a second pushing rod 72, both of which are mounted on the rotating rod 03. Threaded blocks 62 are provided on the first pushing rod 71 and the second pushing rod 72, and the first pushing rod 71, the second pushing rod 72, and the rotating rod 03 are threadedly connected through the threaded blocks 62 and the threaded grooves 61. In this embodiment, the first pushing rod 71 is positioned above the mounting ring 21, and the second pushing rod 72 is positioned below the mounting ring 21. The first pushing rod 71 and the second pushing rod 72 are slidably connected to the inner wall of the aerobic tank. When the rotating rod 03 rotates, the first pushing rod 71 and the second pushing rod 72 can only move up and down. During the up-and-down movement of the first pushing rod 71, the mounting ring 21 is pushed up and down, facilitating the adjustment of the position of the mounting ring 21. During the adjustment of the position of the mounting ring 21, the spreading rod 22 moves up and down while also rotating, thereby making the catalyst more evenly distributed in the aerobic tank.

[0047] A control component 8 is installed on the mounting frame 02. The control component 8 drives the rotating rod 03 to rotate. During the forward and reverse rotation of the rotating rod 03, the first push rod 71 and the second push rod 72 move up and down. The control component 8 includes a drive wheel 81 fixed on the rotating rod 03, a driven wheel 82 rotatably connected to the mounting frame 02, and a connecting belt 83 wound around the drive wheel 81 and the driven wheel 82. A control motor 84 is also installed on the mounting frame 02. The output shaft of the control motor 84 is fixedly connected to the driven wheel 82. The control motor 84 drives the driven wheel 82 to rotate, which in turn drives the drive wheel 81 to rotate under the action of the connecting belt 83. The rotation of the drive wheel 81 drives the rotating rod 03 to rotate, thus facilitating the adjustment of the positions of the first push rod 71 and the second push rod 72. In this embodiment, the control motor 84 is a servo motor, which can drive the driven wheel 82 to rotate forward or reverse. By adjusting the speed of the control motor 84, the speed of the rotating rod 03 is controlled, thereby adjusting the speed at which the first push rod 71 and the second push rod 72 move up and down.

[0048] The implementation principle of a wastewater treatment device for producing cinnamaldehyde according to an embodiment of this application is as follows: When a catalyst needs to be added to the aerobic tank, the mounting ring 21 is positioned at the top, the end of the feeding rod 13 abuts against the surface of the second sealing plate 41, and the feeding rod 13 is inserted into the mounting ring 21 through the inlet 23. At this time, the outlet 15 on the feeding rod 13 is also opened, and the catalyst in the feeding hopper 11 enters the feeding pipe 12 under the action of gravity, and then enters the feeding tray 14 through the feeding pipe 12. The catalyst in the feeding tray 14 enters the feeding rod 13, and finally enters the mounting ring 21 through the inlet 23 on the feeding rod 13. The catalyst in the mounting ring 21 enters the spreading rod 22 under the action of gravity.

[0049] After the mounting ring 21 and the spreading rod 22 are filled with catalyst, the control motor 84 drives the driven wheel 82 to rotate. Under the action of the connecting belt 83, the driving wheel 81 rotates. The driving wheel 81 drives the rotating rod 03 to rotate. The rotating rod 03 drives the first pushing rod 71 and the second pushing rod 72 to move down. The moving first pushing rod 71 pushes the mounting ring 21 to move down as well. The mounting ring 21 drives the spreading rod 22 to move down. Due to the action of the threaded block 62 on the mounting ring 21 and the threaded groove 61 on the rotating rod 03, the mounting ring 21 will also rotate on the rotating rod 03 while moving down. Finally, the spreading rod 22 will move down and rotate at the same time.

[0050] During the downward movement of the installation ring 21, the first sealing component 3 seals the outlet 15, and the second sealing component 4 seals the inlet 23. When the spreading rod 22 moves upward, the control component opens the spreading port 51 on the upper surface of the spreading rod 22, and the wastewater flows downward relative to the spreading rod 22. Due to the large curvature of the upper surface, the flow velocity of the downward flowing wastewater at the upper surface of the spreading rod 22 increases significantly. The increased flow velocity leads to a decrease in pressure, forming a low-pressure zone near the upper surface of the spreading rod 22. Meanwhile, the curvature of the lower surface of the spreading rod 22 is smaller, and the wastewater flows relatively slowly, forming a high-pressure zone.

[0051] Under this pressure distribution, the low-pressure zone on the upper surface of the feed rod 22 exerts a suction effect on the catalyst inside the feed rod 22, causing the catalyst to be drawn out from the feed port 51 on the upper surface of the feed rod 22 and enter the wastewater. Simultaneously, the high-pressure zone on the lower surface of the feed rod 22 compresses the feed port 51 on the lower surface, preventing the catalyst from flowing out from the lower surface. Since Bernoulli's principle is existing technology, its specific working principle will not be described in detail in this embodiment.

[0052] During the downward movement of the installation ring 21, the first sealing component 3 seals the outlet 15, and the second sealing component 4 seals the inlet 23. When the spreading rod 22 moves downward, the control component opens the spreading port 51 on the lower surface of the spreading rod 22, and the wastewater flows upward relative to the spreading rod 22. Due to the asymmetry of the cross-sectional shape, the upward-flowing wastewater first passes through the lower surface of the spreading rod 22 with a smaller curvature, then bypasses the tail and flows through the upper surface of the spreading rod 22 with a larger curvature. Under this flow path, the lower surface of the spreading rod 22 becomes the side with a faster flow velocity, forming a low-pressure area; the upper surface of the spreading rod 22 becomes the side with a slower flow velocity, forming a high-pressure area. At this time, the low-pressure zone on the lower surface of the spreading rod 22 draws the catalyst out from the spreading port 51 on the lower surface of the spreading rod 22; while the high-pressure zone on the upper surface of the spreading rod 22 prevents the catalyst from flowing out from the upper surface. During the up-and-down movement of the mounting ring 21, the catalyst will be sprinkled into different heights of the aerobic tank, so as to facilitate the addition of the catalyst and make the catalyst and wastewater mix more thoroughly and the mixing effect better.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wastewater treatment device for the production of cinnamaldehyde, comprising a wastewater treatment tank (01), characterized in that: A rotating rod (03) is rotatably connected to the wastewater treatment tank (01). A feeding assembly (2) for uniformly adding catalyst into the aerobic tank is provided on the rotating rod (03). The feeding assembly (2) includes an installation ring (21) sliding on the rotating rod (03) and a hollow feeding rod (22) communicating with the installation ring (21). Multiple feeding ports (51) are provided on the upper and lower surfaces of the feeding rod (22). Multiple control components for controlling the opening or closing of the feeding ports (51) are provided on the feeding rod (22). The cross-section of the feeding rod (22) is set as an asymmetrical streamlined shape. When viewed along its vertical movement direction, the cross-section has a front end facing the flow and a back end facing the flow. The upper surface of the spreading rod (22) is longer or more curved than the lower surface of the spreading rod (22) from the front end to the rear end. When the spreading rod (22) moves upward, a low-pressure zone is formed on its upper surface relative to the lower surface. The control causes the spreading port (51) on the upper surface of the spreading rod (22) to open and the spreading port (51) on the lower surface to close. The catalyst is drawn out from the spreading port (51) on the upper surface of the spreading rod (22). When the spreading rod (22) moves downward, the control causes the spreading port (51) on the lower surface of the spreading rod (22) to open and the spreading port (51) on the upper surface to close. The catalyst is drawn out from the spreading port (51) on the lower surface of the spreading rod (22).

2. The wastewater treatment device for producing cinnamaldehyde according to claim 1, characterized in that: An installation frame (02) is provided above the wastewater treatment tank (01), and a feeding assembly (1) is provided on the installation frame (02). The feeding assembly (1) is used to add the configured catalyst into the spreading assembly (2). The feeding assembly (1) includes a feeding hopper (11) fixed on the installation frame (02), a feeding pipe (12) fixed on the feeding hopper (11), a feeding disc (14) fixed on the feeding pipe (12), and a feeding rod (13) fixed on the feeding disc (14). The feeding disc (14) is a hollow structure, and one end of the feeding pipe (12) is connected to the interior of the feeding disc (14). The feeding rod (13) is provided with a discharge port (15), and the catalyst in the feeding rod (13) enters the installation ring (21) through the discharge port (15).

3. The wastewater treatment device for producing cinnamaldehyde according to claim 2, characterized in that: The feeding rod (13) is provided with a first sealing component (3) for sealing the outlet (15). The first sealing component (3) includes a first sealing rod (31) slidably connected to the side of the feeding rod (13) and a first sealing spring (32) fixed on the first sealing rod (31). The end of the first sealing spring (32) away from the first sealing rod (31) is fixed on the feeding rod (13), and the first sealing spring (32) is used to push the first sealing rod (31) to move downward, so that the downwardly moving first sealing rod (31) seals the outlet (15).

4. A wastewater treatment device for the production of cinnamaldehyde according to claim 3, characterized in that: The mounting ring (21) is provided with a feed inlet (23), which is arranged around the rotating rod (03) for one revolution; the mounting ring (21) is provided with a second sealing component (4) for sealing the feed inlet (23); the second sealing component (4) includes a second sealing plate (41) slidably connected to the mounting ring (21) and a second sealing spring (42) fixed on the second sealing plate (41), the end of the second sealing spring (42) away from the second sealing plate (41) is fixed on the mounting ring (21), and the second sealing spring (42) pushes the second sealing plate (41) to seal the feed inlet (23).

5. A wastewater treatment device for the production of cinnamaldehyde according to claim 4, characterized in that: The first sealing rod (31) is provided with an abutment plate (52), which is perpendicular to the first sealing rod (31). During the process of the mounting ring (21) driving the feeding rod (22) to move upward, the upper surface of the mounting ring (21) abuts against the abutment plate (52), and the lower end face of the feeding rod (13) abuts against the second sealing plate (41).

6. A wastewater treatment device for the production of cinnamaldehyde according to claim 1, characterized in that: The rotating rod (03) is provided with a drive assembly (6) for driving the mounting ring (21) to rotate. The drive assembly (6) includes a threaded groove (61) on the surface of the rotating rod (03) and a threaded block (62) fixed on the mounting ring (21). The threaded block (62) cooperates with the threaded groove (61) and is rotatably connected in the threaded groove (61). The mounting ring (21) is threadedly connected to the rotating rod (03) through the threaded block (62).

7. A wastewater treatment device for the production of cinnamaldehyde according to claim 6, characterized in that: The rotating rod (03) is provided with a pushing assembly (7) for driving the mounting ring (21) to move up and down. The pushing assembly (7) includes a first pushing rod (71) and a second pushing rod (72). The first pushing rod (71) and the second pushing rod (72) are both passed through the rotating rod (03). The first pushing rod (71) and the second pushing rod (72) are provided with threaded blocks (62). The first pushing rod (71), the second pushing rod (72) and the rotating rod (03) are threadedly connected by the threaded blocks (62) and the threaded grooves (61). The first pushing rod (71) is located above the mounting ring (21), and the second pushing rod (72) is located below the mounting ring (21). The first pushing rod (71) and the second pushing rod (72) are slidably connected to the inner wall of the aerobic tank.

8. A wastewater treatment device for the production of cinnamaldehyde according to claim 7, characterized in that: The mounting frame (02) is provided with a control component (8) for driving the rotating rod (03) to rotate. During the forward and reverse rotation of the rotating rod (03), the first push rod (71) and the second push rod (72) will move up and down. The control component (8) includes a drive wheel (81) fixed on the rotating rod (03), a driven wheel (82) rotatably connected to the mounting frame (02), and a connecting belt (83) wrapped around the drive wheel (81) and the driven wheel (82). The mounting frame (02) is provided with a control motor (84), and the output shaft of the control motor (84) is fixedly connected to the driven wheel (82).

9. A wastewater treatment device for the production of cinnamaldehyde according to claim 1, characterized in that: The control component is a mechanical control valve. A concentration sensor is installed on the feeding rod (22), and a controller is installed on the mounting bracket (02). The controller is connected to the concentration sensor and the mechanical control valve.

10. A wastewater treatment device for the production of cinnamaldehyde according to claim 2, characterized in that: Two feeding rods (13) are provided. Both feeding rods (13) are hollow structures, and the upper end of the feeding rods (13) is connected to the inside of the mounting ring (21).

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