A device for chemical dewatering of sludge in sewage treatment plants

Abstract

This invention provides a device for chemical dewatering of sludge in wastewater treatment plants, comprising a treatment box with a chemical tank mounted on top. A rotating base plate is rotatably connected to the bottom of the chemical tank. Debris shovels are fixedly connected to both sides of the bottom of the chemical tank. A support frame is fixedly connected to one side of each debris shovel. Rolling rollers are rotatably connected to both sides of the support frame. A stirring motor is fixedly connected to one side of the chemical tank. A stirring component is fixedly connected to the power output end of the stirring motor. The bottom of the stirring component is fixedly connected to the rotating base plate, and a drive gear ring is fixedly connected to the bottom of the stirring component. The stirring motor drives the stirring component and the rotating base plate to rotate, mixing the chemical powder with warm water within the chemical tank. Undissolved lumps are squeezed into an arc-shaped area by the debris shovels, while the drive gear ring meshes with the rolling gears, driving the rolling rollers to rotate and crush the lumps outwards. This ensures thorough pulverization and fusion of the chemical powder, preventing lumps from entering the wastewater treatment system and improving mixing efficiency and chemical powder utilization.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a device suitable for dewatering and chemical treatment of sludge from wastewater treatment plants. Background Technology

[0002] In low-temperature winter environments, using warm water to dissolve and add chemical agents is a crucial measure in wastewater treatment plants. However, dissolving chemicals in cold water and then introducing the icy solution into the low-temperature wastewater tank further lowers the local temperature of the mixed liquor, severely inhibiting the metabolism and reproduction of microorganisms such as activated sludge. This significantly reduces the efficiency of treating organic matter and nutrients (such as nitrogen and phosphorus) in the wastewater, directly impacting effluent quality. Furthermore, the viscosity of many polymeric flocculants (such as polyacrylamide) increases with decreasing temperature, making it difficult for cold water to fully dissolve them and easily forming viscous flocs or "fish-eye" shaped clumps. This severely reduces the effective concentration and contact reaction efficiency of the agents, leading to agent waste, uneven dosing, poor flocculation and sedimentation effects, and even clogging of dosing equipment. Therefore, it is necessary to dissolve chemicals in warm water before adding them to the wastewater for treatment. Polyacrylamide (PAM), a type of polymeric flocculant, tends to form insoluble gel-coated hard lumps when mixed with cold water.

[0003] A search revealed a Chinese patent publication number CN214142074U, which discloses a dosing device for a sludge dewatering mixer. The device includes a mixing tank, a first motor fixedly installed at the middle of the left side of the mixing tank, a stirring rod fixedly connected to the output end of the first motor, and the right side of the stirring rod movably installed in the right side of the mixing tank cavity via a bearing. The outer surface of the stirring rod is provided with multiple equally spaced stirring blades of the same size. A dosing pipe is connected to the left end of the top of the mixing tank.

[0004] To address the lack of functionality in the aforementioned technologies to pulverize and dissolve such gel-coated hard lumps, a device suitable for chemical dewatering of sludge in wastewater treatment plants is proposed. Utility Model Content

[0005] In view of this, the present invention aims to provide a device suitable for the dewatering and chemical treatment of sludge in sewage treatment plants, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0006] The technical solution of this utility model embodiment is implemented as follows: it includes a processing box with a chemical tank installed on top, a rotating base plate rotatably connected to the bottom of the chemical tank, a debris shovel plate fixedly connected to both sides of the bottom of the chemical tank, a support frame fixedly connected to one side of multiple debris shovel plates, and a crushing roller rotatably connected to both sides of the support frame.

[0007] In some embodiments, a stirring motor is fixedly connected to one side of the chemical tank, a stirring component is fixedly connected to the power output end of the stirring motor, and the bottom of the stirring component is fixedly connected to the rotating base plate.

[0008] In some embodiments, a drive gear ring is fixedly connected to the bottom of the stirring component, and a rolling gear is fixedly connected to one side of the rolling roller. The rolling gear and the bottom of the drive gear ring mesh with each other.

[0009] In some embodiments, a filter plate is fixedly connected to one side of the rotating base plate, a solenoid valve is fixedly connected to the bottom of the filter plate, and a spray pipe is fixedly connected below the solenoid valve.

[0010] In some embodiments, a water injection pipe and a drug dispensing pipe are fixedly connected to the top of the chemical tank.

[0011] In some embodiments, a temperature monitoring component is fixedly connected to one side of the chemical tank, and a heating component is fixedly connected to the top of the processing box, with one end of the heating wire of the heating component wrapped around the outside of the chemical tank.

[0012] In some embodiments, a storage box is fixedly connected above the dispensing tube, a dispensing motor is fixedly connected above the storage box, and a dispensing propeller is fixedly connected to the power output end of the dispensing motor. The dispensing propeller is rotatably connected inside the dispensing tube.

[0013] In some embodiments, a cone is fixedly connected to the bottom of the power output end of the drug dispensing motor.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. A device for chemical dewatering of sludge in sewage treatment plants, wherein a stirring motor drives a stirring component and a rotating base plate to rotate, and the chemical powder and warm water are stirred and mixed in a chemical tank; undissolved hard lumps are squeezed into an arc-shaped area by a debris shovel, while a gear ring meshes with a crushing gear to drive a crushing roller to rotate, crushing the hard lumps outward, ensuring that the chemical powder is thoroughly crushed and mixed, preventing hard lumps from entering the sewage treatment system, and improving mixing efficiency and chemical powder utilization.

[0016] 2. A device for chemical treatment of sludge dewatering in sewage treatment plants, wherein a chemical dispensing motor drives a dispensing propeller to rotate below a storage box, and the chemical powder is fed into the dispensing pipe through the propeller; the chemical powder is dispersed by a cone as it falls, preventing the powder from clumping and clogging the pipe, accurately controlling the amount of chemical dispensing, achieving uniform dosing, and reducing maintenance needs and processing interruptions.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the main view of the present invention.

[0020] Figure 2 This is a cross-sectional view of the chemical tank of this utility model;

[0021] Figure 3 This is a structural diagram of the bottom of the chemical tank of this utility model;

[0022] Figure 4 This is a cross-sectional view of the drug delivery tube of this utility model.

[0023] Figure label:

[0024] 1. Processing tank; 2. Heating component; 3. Chemical tank; 4. Spraying pipe; 5. Solenoid valve; 6. Water injection pipe; 7. Stirring motor; 8. Stirring component; 9. Rotating base plate; 10. Drive gear ring; 11. Support frame; 12. Debris shovel; 13. Compactor roller; 14. Compactor gear; 15. Filter plate; 16. Temperature monitoring component; 17. Discharge pipe; 18. Storage box; 19. Discharge motor; 20. Discharge propeller; 21. Conical barrel. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] Example 1:

[0028] like Figure 1-4As shown, an apparatus for dewatering sludge in a wastewater treatment plant includes a treatment box 1 with a chemical tank 3 mounted on top. A rotating base plate 9 is rotatably connected to the bottom of the chemical tank 3. Debris scrapers 12 are fixedly connected to both sides of the bottom of the chemical tank 3. One side of the debris scraper 12 is arc-shaped. A support frame 11 is fixedly connected to one side of multiple debris scrapers 12. Rolling rollers 13 are rotatably connected to both sides of the support frame 11. The edges of the rolling rollers 13 have protrusions, which are slidably connected to the arc-shaped edges of the debris scrapers 12.

[0029] When in use, the powder is first mixed with warm water in the chemical tank 3, and then put into the treatment tank 1 for wastewater treatment. While the powder and warm water are being mixed, the rotating base plate 9 below will rotate to stir the internal liquid. At this time, the hard lumps that cannot be completely dissolved will be squeezed into the arc-shaped area of ​​the debris shovel plate 12. Then the crushing roller 13 rotates to squeeze and crush the hard lumps outward, promoting the crushing and fusion of the powder and improving the powder mixing effect.

[0030] In this embodiment, a stirring motor 7 is fixedly connected to one side of the chemical tank 3, and a stirring component 8 is fixedly connected to the power output end of the stirring motor 7. The bottom of the stirring component 8 is fixedly connected to the rotating base plate 9.

[0031] When the stirring motor 7 is working, it can stir through the blades of the stirring component 8;

[0032] A drive gear ring 10 is fixedly connected to the bottom of the stirring component 8. The drive gear ring 10 is a crown gear ring with the teeth facing downward. A rolling gear 14 is fixedly connected to one side of the rolling roller 13. The rolling gear 14 and the bottom of the drive gear ring 10 mesh with each other.

[0033] At the same time, when the stirring component 8 rotates, it can drive the crushing gear 14 below to rotate through the drive gear ring 10 installed at its bottom, which can then drive the crushing roller 13 to rotate and crush the hard blocks.

[0034] In this embodiment, a filter plate 15 is fixedly connected to one side of the rotating base plate 9, a solenoid valve 5 is fixedly connected to the bottom of the filter plate 15, and a spray pipe 4 is fixedly connected below the solenoid valve 5.

[0035] The spray pipe 4 can rotate and spray the mixed medicine into the sewage for treatment, following the rotating base plate 9. The solenoid valve 5 can control the water output, and the filter plate 15 can prevent the powder lumps from being directly sprayed into the sewage without being mixed.

[0036] In this embodiment, a water injection pipe 6 and a medicine dispensing pipe 17 are fixedly connected to the top of the medicine tank 3. The water injection pipe 6 is connected to an external warm water supply component and can inject warm water. Medicine powder is stored above the medicine dispensing pipe 17.

[0037] In this embodiment, a temperature monitoring component 16 is fixedly connected to one side of the chemical tank 3, and a heating component 2 is fixedly connected to the top of the processing box 1. One end of the heating wire of the heating component 2 wraps around the outside of the chemical tank 3.

[0038] The lower end of the temperature monitoring component 16 is inserted into the water to monitor the water temperature. When the water temperature drops, the heating wire wrapped around the outside of the chemical tank 3 can be heated by energizing the external heating component 2 to keep the water warm.

[0039] In this embodiment: the water injection pipe 6 is connected to an external warm water supply component, which can inject warm water; the medicine drop pipe 17 stores medicine powder above; the lower end of the temperature monitoring component 16 is inserted into the water, which can monitor the water temperature; when the water temperature drops, the heating wire wrapped around the outside of the medicine tank 3 can be heated by energizing the external heating component 2 to keep it warm.

[0040] When in use, the powder is first mixed with warm water in the chemical tank 3, and then put into the treatment tank 1 for wastewater treatment. When the powder and warm water are mixed, the stirring motor 7 can stir the mixture through the blades of the stirring component 8.

[0041] The rotating base plate 9 below will rotate, stirring the internal liquid. At this time, the hard lumps that cannot be completely dissolved will be squeezed into the arc-shaped area of ​​the debris shovel plate 12. Then, the crushing roller 13 rotates, squeezing and crushing the hard lumps outward, promoting the crushing and fusion of the powder lumps, and improving the mixing effect of the powder.

[0042] At the same time, when the stirring component 8 rotates, it can drive the crushing gear 14 below to rotate through the drive gear ring 10 installed at its bottom. At this time, it can drive the crushing roller 13 to rotate and crush the hard blocks. The spray pipe 4 can follow the rotating base plate 9 to rotate and sprinkle the mixed medicine into the sewage for treatment. The solenoid valve 5 can control the water output. The filter plate 15 can prevent the medicine powder hard blocks from being directly sprinkled into the sewage without being mixed.

[0043] Example 2:

[0044] A device for chemical dewatering of sludge in wastewater treatment plants is provided. This embodiment is based on Embodiment 1 with the following improvements, such as... Figure 1-4 As shown,

[0045] In this embodiment, a storage box 18 is fixedly connected above the drug delivery tube 17, a drug delivery motor 19 is fixedly connected above the storage box 18, a drug delivery propeller 20 is fixedly connected to the power output end of the drug delivery motor 19, and the drug delivery propeller 20 is rotatably connected inside the drug delivery tube 17.

[0046] The powder is stored in the storage box 18. When the powder needs to be added, the dispensing motor 19 can drive the dispensing propeller 20 below to rotate and put the powder into the liquid below. This can prevent the powder from clumping and blocking, and at the same time, the amount of powder dispensed can be better controlled.

[0047] A cone 21 is fixedly connected to the bottom of the power output end of the drug dispensing motor 19;

[0048] The cone 21 can further disperse the powder falling from above, making the mixture more even.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for chemical dewatering of sludge from a wastewater treatment plant, comprising a treatment tank (1) with a chemical tank (3) mounted on top, characterized in that: The bottom of the chemical tank (3) is rotatably connected to a rotating base plate (9), and the bottom sides of the chemical tank (3) are fixedly connected to a debris shovel plate (12). A support frame (11) is fixedly connected to one side of the multiple debris shovel plates (12), and a rolling roller (13) is rotatably connected to both sides of the support frame (11).

2. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 1, characterized in that: A stirring motor (7) is fixedly connected to one side of the chemical tank (3), and a stirring component (8) is fixedly connected to the power output end of the stirring motor (7). The bottom of the stirring component (8) is fixedly connected to the rotating base plate (9).

3. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 2, characterized in that: The bottom of the stirring component (8) is fixedly connected to a drive gear ring (10), and a rolling gear (14) is fixedly connected to one side of the rolling roller (13). The rolling gear (14) and the bottom of the drive gear ring (10) mesh with each other.

4. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 1, characterized in that: A filter plate (15) is fixedly connected to one side of the rotating base plate (9), a solenoid valve (5) is fixedly connected to the bottom of the filter plate (15), and a spray pipe (4) is fixedly connected below the solenoid valve (5).

5. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 4, characterized in that: The top of the chemical tank (3) is fixedly connected to a water injection pipe (6) and a drug delivery pipe (17).

6. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 4, characterized in that: A temperature monitoring component (16) is fixedly connected to one side of the chemical tank (3), and a heating component (2) is fixedly connected above the processing box (1). One end of the heating wire of the heating component (2) wraps around the outside of the chemical tank (3).

7. The apparatus for dewatering and chemically reacting sludge from wastewater treatment plants according to claim 5, characterized in that: A storage box (18) is fixedly connected above the drug delivery tube (17), a drug delivery motor (19) is fixedly connected above the storage box (18), a drug delivery propeller (20) is fixedly connected to the power output end of the drug delivery motor (19), and the drug delivery propeller (20) is rotatably connected inside the drug delivery tube (17).

8. The apparatus for dewatering and chemically reacting sludge in a wastewater treatment plant according to claim 7, characterized in that: A cone (21) is fixedly connected to the bottom of the power output end of the drug dispensing motor (19).

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