A dosing device for treating nitrogen and phosphorus-containing wastewater

Abstract

This invention discloses a dosing device for treating nitrogen and phosphorus-containing wastewater, comprising a shell, a chemical tank, and a distributing channel. The chemical tank is located at the upper part of the shell, and the distributing channel is located at the bottom inside the chemical tank. The top and bottom of the distributing channel have openings or holes communicating with the chemical tank and the shell. Multiple dispensing pipes are connected to the bottom of the distributing channel within the shell. Each dispensing pipe is a hollow pipe, with one end connected to the distributing channel and the other end connected to the bottom of the shell. A driving device for rotating the dispensing pipe is located at the bottom of the pipe, and a closing device is located at the center of the pipe. This device can effectively dispense chemicals quantitatively and also makes the equipment operate more stably.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a dosing device for treating nitrogen and phosphorus-containing wastewater. Background Technology

[0002] Wastewater treatment is the artificial purification process that brings wastewater to the required standards for discharge into a natural water body or reuse. Currently, wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, healthcare, and catering. With changes in urban residents' dietary habits, domestic wastewater generated by households generally contains high concentrations of nitrogen oxides and phosphorus compounds. If these nitrogen oxides and phosphorus compounds are not effectively removed, they can easily cause the proliferation of pathogenic microorganisms and algae in natural water bodies downstream of the wastewater treatment system's discharge point, leading to serious eutrophication problems.

[0003] Existing wastewater treatment dosing devices, such as the biological nitrogen and phosphorus removal wastewater treatment dosing device disclosed in CN213803091U, include a tank body. A support is provided at the bottom of the tank body. Several stirring motors are fixed to one side of the bottom of the tank body. The output end of each stirring motor is equipped with a stirring paddle, which extends into the tank body and penetrates through the bottom. A reaction chamber is located on one side of the tank body, with activated sludge at the bottom. The sidewalls and bottom of the reaction chamber have internal cavities. An equipment chamber is located inside the tank body, opposite the reaction chamber. Horizontal partitions are provided at the top of the reaction chamber and the equipment chamber. A cam motor is located on the sidewall of the tank body, at the center of the equipment chamber. The output end of the cam motor is connected to a cam, and a follower is provided above the cam. A sleeve is provided on the horizontal partition, and the follower is fitted inside the sleeve. A lever is hinged to the end of the follower, and a support rod is hinged to the middle of the lever. The support rod is fixed to the upper part of the box body, and a pulverizing head is hinged to the end of the lever. A medicine inlet pipe is provided on the upper side wall of the box body, and a pulverizing groove is provided at the end of the medicine inlet pipe. The pulverizing groove is fixed above the horizontal partition, and a filter screen is provided on the horizontal partition below the pulverizing groove. An energy-saving temperature control mechanism is provided at the bottom of the box body. This device... With a compact structure, this device utilizes a stirring motor to drive an agitator to accelerate the reaction rate of wastewater treatment. Based on the principle that temperature changes can affect the denitrification and phosphorus removal reactions in wastewater treatment, an energy-saving temperature control mechanism is designed to store excess heat generated by the stirring motor in the water. This serves two purposes: cooling the stirring motor and using the cooled water to regulate the temperature, thus saving energy and protecting the environment. In addition, the device is equipped with a mechanism to crush pharmaceutical lumps, which promotes thorough crushing of the pharmaceuticals and increases the contact area between the pharmaceuticals and the wastewater, thereby improving the treatment speed and effectiveness of nitrogen and phosphorus-containing wastewater.

[0004] However, existing wastewater treatment dosing systems cannot simultaneously administer equal amounts of chemicals to multiple reaction tanks, inevitably leading to variations in the degree of nitrogen and phosphorus removal in each tank and affecting the overall speed and effectiveness of nitrogen- and phosphorus-containing wastewater treatment. Furthermore, existing dosing systems cannot effectively disperse the sludge and impurities produced after the reaction of nitrogen- and phosphorus-containing wastewater with chemicals, easily causing blockages in the pump, ultimately resulting in frequent system malfunctions and even unstable operation. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dosing device for treating nitrogen and phosphorus-containing wastewater.

[0006] The objective of this invention is achieved through the following technical solution: A dosing device for treating nitrogen and phosphorus-containing wastewater, comprising a shell, characterized in that: it further comprises a medicine tank and a distributing channel; a medicine tank is provided at the upper end of the shell, and a distributing channel is provided at the bottom of the medicine tank, with openings or holes at the top and bottom of the distributing channel communicating with the medicine tank and the shell; multiple dispensing pipes are connected to the bottom of the distributing channel within the shell, the dispensing pipes are hollow pipes, one end of which is connected to the distributing channel, and the other end is connected to the bottom of the shell, a driving device for driving the dispensing pipe to rotate is provided at the bottom of the dispensing pipe, and a closing device is provided at the center of the dispensing pipe.

[0007] Preferably, the dispensing channel is configured as a screw conveyor, including a housing and a rotating rod driven by a motor to rotate within the housing.

[0008] Preferably, the driving device includes a rack, a gear, a spring, and a telescopic rod; a rack is provided inside the lower end of the housing, a gear is provided at the bottom of the drug delivery tube to mesh with the rack, a telescopic rod is provided at one end of the rack, and a spring is provided at the other end.

[0009] Preferably, a through hole is provided on the outer side of the upper end of the dispensing tube, and the top of the dispensing tube is embedded in the hole at the bottom of the dispensing tube; the closing device includes a rotating rod and a top block; the rotating rod is rotatably provided inside the dispensing tube, and the gear is provided on the rotating rod; the top block is slidably provided inside the upper end of the dispensing tube, the top block is sleeve-shaped, the upper end is a frustum-shaped cone inclined towards the middle, and the inner side is provided with threads, the upper end of the dispensing tube is set in an inclined shape that fits against the inclined surface of the upper end of the top block; the rotating rod is threadedly rotated inside the top block.

[0010] Preferably, the top block is located below the through hole on the outer side of the upper end of the medicine dispensing tube; a triangular protrusion is provided on the inclined surface of the upper end of the inside of the medicine dispensing tube.

[0011] Preferably, an inclined groove is provided on the outer side of the lower end of the top block, the inclined groove is inclined along the outer arc surface of the top block, and a locking block is provided inside the medicine tube to enter the inclined groove.

[0012] Preferably, a rotating pawl is provided on the outer side of the lower end of the drug delivery tube, and a linkage drive device for driving the rotating pawl is provided on the rotating rod.

[0013] Preferably, a groove is provided on the dispensing tube where the rotating claw is located to connect the inner and outer sides of the dispensing tube, and the linkage drive device passes through the groove and is connected to the rotating claw; the linkage drive device includes a push rod, one end of which is rotatably connected to the rotating claw, and the other end is rotatably connected to the rotating rod.

[0014] Preferably, the rotating claw is an arc-shaped claw structure that fits against the outside of the drug delivery tube; the top rod is inclined.

[0015] Preferably, a partition is installed inside the shell, and a water lifter is installed on the outside of the partition. Two sets of partitions and water lifters are arranged equidistantly inside the shell.

[0016] The present invention has the following advantages: 1. The device uses the combination of dispensing channel and dispensing tube to allow the medicine to enter the dispensing channel from the medicine box and then push the medicine into each dispensing tube simultaneously and equally through the spiral rotating rod, thereby achieving the effect of dispensing multiple equal amounts of medicine.

[0017] 2. The closing device inside the drug delivery tube 6 enables the top block to rotate by using the toothed groove after the rotating rod rotates. After the top block rotates, it can move upward along the inclined groove, thus gradually approaching the inclined surface of the drug delivery tube, achieving the effect of squeezing and breaking the clumps in the drug.

[0018] 3. By setting a rotating claw, the top rod is made to move and push the rotating claw outward, so that it can come into contact with the sludge block. When the rotating claw returns to its original position, it can directly break up the sludge block and prevent it from clogging the water pump. Attached Figure Description

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 This is a schematic cross-sectional view of the shell.

[0021] Figure 3 This is a perspective view of the inside of the drug delivery tube.

[0022] Figure 4 This is an enlarged view of point A.

[0023] Figure 5 This is a top view of the top block.

[0024] Figure 6 This is a top view of the rotating claw.

[0025] Figure 7 This is a 3D view of the rotating claw.

[0026] In the diagram, 1-shell, 2-medicine box, 3-medicine channel, 4-partition plate, 5-water lifter, 6-medicine pipe, 7-rotating rod, 8-rotating claw, 9-telescopic rod, 10-rack, 11-top block, 12-sloping groove, 13-top rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] like Figure 1-2 The device shown is a nitrogen and phosphorus wastewater treatment dosing device, including a shell 1, a chemical tank 2, and a distributing channel 3. This device evenly dispenses chemicals from the chemical tank 2 into the shell 1 via the distributing channel 3. The shell 1 has inlet and outlet ports at both ends. Specifically, the chemical tank 2 is located at the upper part of the shell 1, and the distributing channel 3 is located at the bottom inside the chemical tank 2. The top and bottom of the distributing channel 3 have openings or holes communicating with the chemical tank 2 and the shell 1. Multiple dispensing pipes 6 are connected to the bottom of the distributing channel 3 within the shell 1. Each dispensing pipe 6 is a hollow pipe, with one end connected to the distributing channel 3 and the other end connected to the bottom of the shell 1. A drive device is located at the bottom of each dispensing pipe 6 to rotate it, and a closing device is located at the center of each dispensing pipe 6. In this device, the rotation of the dispensing pipe 6 driven by the drive device, combined with the distributing channel 3, and the closing device within the dispensing pipe 6, allows for timed and quantitative control of the entire dosing process. Specifically, as shown... Figure 3 The dispensing channel 3 is configured as a screw conveyor, including a housing and a rotating rod driven by a motor or drive motor to rotate within the housing. The driving device for rotating the dispensing tube 6 includes a rack 10, a gear, a spring, and a telescopic rod 9. The rack 10 is located inside the lower end of the housing 1, and a gear meshes with the rack 10 at the bottom of the dispensing tube 6. A telescopic rod 9 is located at one end of the rack 10, and a spring at the other end. Thus, the rack 10 moves back and forth through the linkage of the telescopic rod 9 and the spring, thereby driving the dispensing tube 6 to rotate. The telescopic rod 9 is an electric telescopic rod for easy control.

[0034] In another embodiment, to facilitate the opening and closing of the closing device, such as Figure 4As shown, a through hole is provided on the outer side of the upper end of the dispensing tube 6, and the top of the dispensing tube 6 is embedded in the hole at the bottom of the dispensing tube 6. The closing device includes a rotating rod 7 and a top block 11. Specifically, the rotating rod 7 is rotatably installed inside the dispensing tube 6, and the gear is installed on the rotating rod 7. The driving device drives the rotating rod 7 to rotate, while the dispensing tube 6 does not rotate. Then, the top block 11 is slidably installed inside the upper end of the dispensing tube 6. The top block 11 is sleeve-shaped, with the upper end being a frustum-shaped cone inclined towards the middle, and the inner side is provided with threads. The upper end of the dispensing tube 6 is inclined to fit against the inclined surface of the upper end of the top block 11. The rotating rod 7 is threadedly connected to the top block 11. Thus, the rotation of the rotating rod 7 causes the top block 11 to rise, thereby realizing the start and stop of dispensing. Specifically, the top block 11 needs to be positioned below the through hole on the outer side of the upper end of the medicine tube 6. Furthermore, a better sealing structure is to provide a triangular protrusion on the upper inclined surface inside the medicine tube 6, thus creating a more secure seal at the joint. Preferably, to facilitate the rising of the top block 11, a sloping groove 12 is provided on the outer side of the lower end of the top block 11. The sloping groove 12 is inclined along the outer arc surface of the top block 11, and a locking block is provided inside the medicine tube 6 to enter the sloping groove 12.

[0035] In another embodiment, to simultaneously prevent clogging of the water pump 5, a partition 4 is installed inside the housing 1, and the water pump 5 is installed on the outside of the partition 4. Two sets of partition 4 and water pump 5 are equidistantly arranged inside the housing 1. Simultaneously, a rotating claw 8 is connected to the outer side of the lower end of the dispensing pipe 6, and a linkage drive device for driving the rotating claw 8 is provided on the rotating rod 7. To facilitate the movement of the linkage drive device, a groove is provided on the dispensing pipe 6 at the location of the rotating claw 8 to connect the inner and outer sides of the dispensing pipe 6. The linkage drive device passes through this groove and connects to the rotating claw 8. The linkage drive device includes a push rod 13, one end of which is connected to the rotating claw 8, and the other end is connected to the rotating rod 7. The rotating claw 8 is an arc-shaped claw structure that fits against the outer side of the dispensing pipe 6, and the push rod 13 is inclined.

[0036] This device consists of a medicine tank 2 fixedly installed on the upper part of the outer shell 1. A medicine distribution channel 3 is located at the bottom of the medicine tank 2, with an opening at the top of the channel communicating with the interior of the medicine tank 2. A spiral conveying rod is installed inside the channel 3, and a drive motor is connected to one side of the bolt rod or screw to drive its rotation. A partition 4 is installed inside the shell 1, and a water lifter 5 is installed on the outside of the partition 4. Two sets of partition 4 and water lifters 5 are equidistantly arranged inside the shell 1 for lifting. The housing 1 contains a hollow dispensing tube 6. The upper end of the dispensing tube 6 connects to the dispensing channel 3, and the lower end extends to the bottom of the housing 1. A through hole is provided on the outer side of the upper end of the dispensing tube 6, allowing medication to enter the dispensing channel 3 from the medicine box 2. The medication is then pushed into each dispensing tube 6 in equal amounts by a spiral rotating rod, achieving the effect of dispensing multiple equal amounts of medication. A rotating rod 7 is installed inside the dispensing tube 6, with its lower end extending through the tube and into the housing 1. A rack 10 is movably installed inside the lower end of the housing 1. A gear is fixedly connected to the bottom end of the rotating rod 7, and the gear meshes with the rack 10. A telescopic rod 9 is installed on the left side of the lower end of the housing 1. The telescopic rod 9 is electrically operated, with one end contacting the rack 10. A spring is installed inside the base 1 corresponding to the other end of the rack 10. When the telescopic rod 9 pushes the rack 10, it rotates the rack 10. The rod 7 rotates inside the medicine delivery tube 6, and a top block 11 is movably installed inside the upper end of the medicine delivery tube 6. The top block 11 is cylindrical, with the upper end being a frustum-shaped cone inclined towards the middle. The upper end of the medicine delivery tube 6 is inclined to fit against the upper inclined surface of the top block 11. A groove 12 is opened on the outer side of the lower end of the top block 11, and the groove 12 is inclined along the outer arc surface of the top block 11. A locking block is provided inside the medicine delivery tube 6 to enter the groove 12. The upper end of the rotating rod 7 enters the top block. Inside the top block 11, a toothed groove is provided on the outer side of the upper end of the rotating rod 7. The top block 11 is engaged with the toothed groove on the outer side of the rotating rod 7. A groove is provided on the outer side of the upper end of the top block 11. A triangular protrusion is provided on the inclined surface of the upper end of the medicine tube 6. When the rotating rod 7 rotates, the toothed groove can drive the top block 11 to rotate. After the top block 11 rotates, it can move upward along the track of the inclined groove 12, thereby gradually approaching the inclined surface of the medicine tube 6, achieving the effect of squeezing and breaking the clumps in the medicine. Finally, a rotating claw 8 is movably installed on the outer side of the lower end of the medicine supply pipe 6. The rotating claw 8 is an arc-shaped setting that fits against the outer side of the medicine supply pipe 6. One side of the rotating claw 8 is hinged to the outer side of the pressure pipe 6. A top rod 13 is movably installed on the outer side of the rotating rod 7 corresponding to the position of the rotating claw 8. The top rod 13 is inclined on the outer side of the rotating rod 7. Both ends of the top rod 13 are hinged to the rotating claw 8 and the outer side of the rotating rod 7, respectively. When the rotating rod 7 rotates, the distance between the hinge point of the top rod 13 and the rotating claw 8 can be changed, causing the top rod 13 to move and push the rotating claw 8 outward, thereby achieving the effect of contacting the sludge block. When the rotating claw 8 is reset, it can directly break up the sludge block and prevent it from clogging the water pump 5.

[0037] In another embodiment, the device provides a quantitative drug dosing method, which uses a drug delivery channel in conjunction with a drug delivery tube to quantitatively dispense the drug, uses a closing device inside the drug delivery tube to break up and release the drug, and simultaneously uses a rotating claw to disperse sludge clumps. The method specifically includes the following steps:

[0038] 1. Move the top block to the outer through hole at the upper end of the drug delivery tube using the drive device to seal the pressure tube;

[0039] 2. The medicine is evenly distributed from the medicine box to the top of the medicine tube through the medicine distribution channel;

[0040] 3. Stop the operation of the dispensing channel. At the same time, use the drive device to move the top block back and forth to crush the medicine and make the medicine fall from the outer through hole at the upper end of the dispensing tube.

[0041] 4. While the medicine is being crushed and released, the rotating rod drives the rotating claw to move back and forth to break up the sludge blocks.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dosing device for treating nitrogen and phosphorus-containing wastewater, comprising a shell (1), characterized in that: It also includes a medicine box (2) and a medicine distribution channel (3); a medicine box (2) is provided at the upper part of the outer shell (1), and a medicine distribution channel (3) is provided at the bottom inside the medicine box (2). The top and bottom of the medicine distribution channel (3) are provided with openings or holes that communicate with the medicine box (2) and the shell (1); multiple medicine dispensing tubes (6) are connected to the bottom of the medicine distribution channel (3) inside the shell (1). The medicine dispensing tubes (6) are hollow tubes, one end of which is connected to the medicine distribution channel (3), and the other end is connected to the bottom of the shell (1). The bottom of the medicine dispensing tubes (6) is provided with a driving device to drive the medicine dispensing tubes (6) to rotate, and the center of the medicine dispensing tubes (6) is provided with a closed... The device includes a screw conveyor (3) and a housing and a rotating rod driven by a motor to rotate inside the housing. The driving device includes a rack (10), a gear, a spring and a telescopic rod (9). A rack (10) is provided inside the lower end of the housing (1). A gear is provided at the bottom of the drug delivery tube (6) to mesh with the rack (10). A telescopic rod (9) is provided at one end of the rack (10) and a spring is provided at the other end. A through hole is provided on the outer side of the upper end of the drug delivery tube (6). The top of the drug delivery tube (6) is embedded in the hole at the bottom of the drug delivery tube (6). The closing device includes a rotating rod (7) and a top block (11). A rotating rod (7) is connected inside the drug delivery tube (6), and the gear is mounted on the rotating rod (7); a top block (11) is slidably mounted inside the upper end of the drug delivery tube (6), the top block (11) is sleeve-shaped, the upper end is a frustum-shaped cylinder inclined towards the middle, and the inner side is threaded, the upper end of the inside of the drug delivery tube (6) is inclined to fit against the inclined surface of the upper end of the top block (11); the rotating rod (7) is threadedly connected inside the top block (11); the top block (11) is mounted inside the lower end of the drug delivery tube (6). Below the through hole on the outer side of the upper end of the medicine tube (6); a triangular protrusion is provided on the upper inclined surface inside the medicine tube (6); an inclined groove (12) is provided on the outer side of the lower end of the top block (11), the inclined groove (12) is inclined along the outer arc surface of the top block (11), and a locking block is provided inside the medicine tube (6) to enter the inclined groove (12); a rotating claw (8) is provided on the outer side of the lower end of the medicine tube (6), and a linkage drive device for driving the rotating claw (8) is provided on the rotating rod (7).

2. The dosing device for treating nitrogen- and phosphorus-containing wastewater according to claim 1, characterized in that: A groove is provided on the medicine tube (6) where the rotating claw (8) is located to connect the inner and outer sides of the medicine tube (6). The linkage drive device passes through the groove and is connected to the rotating claw (8). The linkage drive device includes a push rod (13), one end of which is connected to the rotating claw (8), and the other end is connected to the rotating rod (7).

3. The dosing device for treating nitrogen- and phosphorus-containing wastewater according to claim 2, characterized in that: The rotating claw (8) is an arc-shaped claw structure that fits against the outside of the drug delivery tube (6); the top rod (13) is inclined.

4. A dosing device for treating nitrogen- and phosphorus-containing wastewater according to claim 1 or 2, characterized in that: A partition (4) is installed inside the shell (1), and a water pump (5) is installed on the outside of the partition (4). The partition (4) and the water pump (5) are arranged in two sets at equal intervals inside the shell (1).

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