Cationic dosing device with lifting stirrer

Abstract

The utility model discloses a cation dosing device with a lifting stirrer, and belongs to the technical field of sewage treatment. The medicine adding device comprises a medicine box, a vertical first partition plate is arranged in the medicine box and divides the medicine box into a medicine dispensing area and a solution area, the height of the first partition plate is smaller than that of the medicine box, a medicine adding and water conveying assembly is arranged at the top of the medicine dispensing area, a lifting type stirrer assembly is arranged in the medicine dispensing area, and a stirrer is arranged in the solution area. The device is simple in structure and convenient to operate, the caking phenomenon in the cationic agent dispensing process under the low-temperature condition in winter is reduced, the probability that the dosing pump and the dosing pipeline are blocked is reduced, the operation and maintenance cost is effectively reduced, and a sewage treatment plant runs more stably.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a cationic dosing device with a lifting and stirring machine. Background Technology

[0002] The cationic dosing unit is an integrated automatic polymer dry powder dosing device. It is a fully automatic, continuous dosing system. Water and dry powder flocculant enter the cyclone premixer at a constant ratio for premixing before flowing into the preparation tank for stirring and mixing. The stirrer in the preparation tank is a single-layer blade type, with the blades located at the bottom of the tank. When the preparation tank is full, it overflows into the solution tank, where it is stirred and mixed again. The prepared solution, now meeting the requirements, can then be continuously and automatically added to the equipment via the dosing pump.

[0003] In existing technologies, under low-temperature conditions in winter, the dissolution rate of cationic polyacrylamide in the water slows down due to the low water temperature. Furthermore, the agitator in the preparation tank is located at the bottom and cannot agitate the cationic polyacrylamide that falls onto the water surface. When the polyacrylamide dissolves, the portion that first contacts the water begins to swell, increasing its surface area and eventually enveloping the portion that hasn't contacted the water, thus forming insoluble polyacrylamide clumps. These clumps are difficult to dissolve regardless of the amount of agitation or the duration of agitation, leading to unnecessary waste during dosing. Cleaning these clumps is also very troublesome, as small flocs can easily flow into the dosing pipe and clog the dosing pump. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a cationic dosing device with a lifting mixer to solve the problem of drug clumping when dissolved in water due to uneven mixing caused by traditional mixers.

[0005] To achieve the above objectives, this utility model designs a cation dosing device with a lifting mixer, including a medicine tank. The medicine tank is provided with a vertical first partition that divides the medicine tank into a dosing area and a solution area. The height of the first partition is less than the height of the medicine tank. The top of the dosing area is provided with a dosing and water supply assembly. The dosing area is provided with a lifting mixer assembly. The solution area is provided with a stirrer.

[0006] Preferably, the lifting mixer assembly includes a lifting platform and a mixer. The lifting platform is fixed to the top of the medicine tank, and the mixer is mounted on the lifting platform. The rotating shaft of the mixer passes through the medicine tank and extends into the bottom area of ​​the dispensing zone. The cooperation of the lifting platform and the mixer ensures that the impeller of the mixer is always positioned 2-5 cm below the liquid surface in the dispensing zone. The rotation of the impeller rapidly and evenly disperses the medicine added to the medicine tank upon contact with water, preventing clumping.

[0007] Preferably, the lifting machine includes two support plates spaced apart, the bottom of the support plates is fixed to the top of the medicine box, the top of the two support plates is fixed to a top plate, a lifting motor is installed on the top of the top plate, a lifting rod is fixed to the bottom of the lifting motor, a lifting platform is fixed to the bottom of the lifting rod, and a mixer is installed on the lifting platform.

[0008] Preferably, two guide rods are fixed at a distance between the top plate and the medicine box, and the lifting platform is provided with guide holes that cooperate with the guide rods. The lifting platform slides up and down along the guide rods through the guide holes. The guide rods make the lifting platform more stable during the rising and falling process.

[0009] Preferably, the mixer includes a mixer motor, and a first propeller-type impeller is installed at the bottom region of the motor shaft. Above the propeller-type impeller, paddle-type impellers are installed at intervals. The paddle-type impellers can handle fluids with a wide viscosity range. The straight blades, due to their large shear effect, can disperse the cationic reagents that have just contacted the water surface very finely and ensure thorough and uniform mixing, minimizing the risk of agglomeration.

[0010] Preferably, the stirrer includes a stirrer motor, the motor shaft of which extends to the bottom region of the solution zone, and two second propeller-type stirring impellers are mounted at intervals on the motor shaft. The two second propeller-type stirring impellers enable more uniform stirring during the process compared to a single impeller design.

[0011] Preferably, the dosing and water supply assembly includes a dosing device body, a funnel-shaped inlet pipe at the top of the dosing device body, a delivery motor mounted on the side wall of the dosing device body, and a wet-dry mixer connected to the side of the dosing device body. The wet-dry mixer has an inlet pipe at the top and a outlet pipe at the bottom, with an inlet valve on the inlet pipe and an outlet valve on the outlet pipe. The dosing and water supply assembly ensures that the PAM dry powder and water are fully mixed by simultaneously adding cationic reagent and water, forming a uniform flocculation solution and preventing the formation of large amounts of flocculent material in the dosing tank area.

[0012] Preferably, a level gauge is provided in the dispensing area.

[0013] Preferably, the solution area is provided with a second partition to separate the drug preparation area into a first solution area and a second solution area, and both the first solution area and the second solution area are provided with a stirrer.

[0014] Preferably, the top of the medicine tank is equipped with an intelligent control cabinet, the signal receiving end of which is connected to the signal output end of the level gauge; the signal output end of the intelligent control cabinet is connected to the signal receiving ends of the medicine delivery motor, the dry-wet mixer, the medicine dispensing valve, the lifting motor, the agitator motor, and the stirrer motor. The intelligent control cabinet has a built-in signal acquisition module, a feedback control module, and a drive device control module.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model has a simple structure and is easy to operate. By cooperating with the elevator and the mixer, the impeller of the mixer is always controlled at 2-5 cm below the liquid surface in the dosing area. The rotation of the impeller makes the drugs added to the tank quickly and evenly dispersed when they come into contact with water. This avoids the clumping of cationic drugs during the dosing process under low temperature conditions in winter, reduces the probability of blockage of the dosing pump and dosing pipeline, effectively reduces the operation and maintenance costs, and makes the sewage treatment plant operate more stably.

[0017] 2. This utility model includes optimized control technology, which utilizes an agitator impeller to rapidly and evenly disperse the cationic agent during contact with water, avoiding the situation where uneven distribution of the upper and lower layers of solution in the agent preparation tank leads to unstable efficacy of the polyacrylamide agent, and reasonably controls the amount of cationic agent used, thus saving on drug costs. Attached Figure Description

[0018] Figure 1 This is a structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a structural diagram of Embodiment 2 of the present invention.

[0020] Figure label:

[0021] 1. Medicine box, 11. First partition, 12. Medicine preparation area, 13. Solution area, 131. First solution area, 132. Second solution area, 14. Second partition.

[0022] 2. Dosing and water delivery assembly; 21. Dosing unit body; 22. Inlet pipe; 23. Dosing motor; 24. Dry-wet mixer; 25. Inlet pipe; 251. Inlet valve; 26. Outlet pipe; 261. Outlet valve.

[0023] 3. Lifting mixer assembly; 31. Lifting machine; 311. Support plate; 312. Top plate; 313. Lifting motor; 314. Lifting rod; 315. Lifting platform; 316. Guide rod; 32. Mixer; 321. Mixer motor; 322. First propeller impeller; 323. Paddle impeller.

[0024] 4. Agitator, 41. Agitator motor, 42. Second propeller impeller,

[0025] 5. Level gauges

[0026] 6. Intelligent control cabinet. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figure 1 The cation dosing device with a lifting agitator shown includes a reagent tank 1. A vertical first partition 11 divides the tank into a preparation area 12 and a solution area 13. The height of the first partition 11 is less than the height of the reagent tank 1. A dosing and water supply assembly 2 is located at the top of the preparation area 12. A lifting agitator assembly 3 and a level gauge 5 are also located within the preparation area 12. A stirrer 4 is located within the solution area 13.

[0035] The lifting mixer assembly 3 includes a lifting platform 31 and a mixer 32. The lifting platform 31 is fixed to the top of the medicine tank 1, and the mixer 32 is mounted on the lifting platform 31. The rotating shaft of the mixer 32 passes through the medicine tank 1 and extends into the bottom area of ​​the dispensing area 12. The lifting platform 31 includes two spaced-apart support plates 311. The bottom of the support plates 311 is fixed to the top of the medicine tank 1, and a top plate 312 is fixed to the top of the two support plates 311. A lifting motor 313 is mounted on the top of the top plate 312, and a lifting rod 314 is fixed to the bottom of the lifting motor 313. A lifting platform 315 is fixed to the bottom of the lifting rod 314, and the mixer 32 is mounted on the lifting platform 315. Two guide rods 326 are fixed at intervals between the top plate 312 and the medicine tank 1. The lifting platform 325 is provided with guide holes that cooperate with the guide rods 326, and the lifting platform 315 slides up and down along the guide rods 326 through the guide holes. The mixer 32 includes a mixer motor 321. A first propeller-type impeller 322 is installed at the bottom of the shaft of the mixer motor 321, and paddle-type impellers 323 are installed at intervals above the first propeller-type impeller 322. The paddle-type impellers 323 can handle fluids with a wide viscosity range. Due to the large shear effect, the straight blades can disperse the cationic reagents that have just come into contact with the water surface very finely and can be fully and evenly mixed, minimizing the formation of agglomerates.

[0036] The stirrer 4 includes a stirrer motor 41, the shaft of which extends to the bottom region of the solution zone 13, and two second propeller impellers 42 are mounted at intervals on the shaft of the stirrer motor 41.

[0037] The dosing and water supply assembly 2 includes a dosing device body 21. The top of the dosing device body 21 is provided with a funnel-shaped inlet pipe 22. A dosing motor 23 is installed on the side wall of the dosing device body 21. A dry-wet mixer 24 is connected to the side of the dosing device body 21. The top of the dry-wet mixer 24 is provided with a water inlet pipe 25 and the bottom is provided with a dosing outlet pipe 26. A water inlet valve 251 is provided on the water inlet pipe 25 and a dosing outlet valve 261 is provided on the dosing outlet pipe 26.

[0038] The top of the medicine box 1 is equipped with an intelligent control cabinet 6. The signal receiving end of the intelligent control cabinet 6 is connected to the signal output end of the liquid level gauge 5. The signal output end of the intelligent control cabinet 6 is connected to the signal receiving ends of the medicine delivery motor 23, the dry and wet mixer 24, the medicine outlet valve 261, the lifting motor 313, the mixer motor 321, and the agitator motor 41.

[0039] The following describes the technological process of this utility model:

[0040] Assemble the cationic dosing device with lifting mixer as in Example 1. The drug to be added (polyacrylamide in this example) enters the dosing device body 21 through the inlet pipe 22. The intelligent control cabinet 6 controls the drug delivery motor 23 to start and deliver the drug to the dry-wet mixer 24. At the same time, the intelligent control cabinet 6 opens the water inlet valve 251. After the drug and water are initially mixed, the intelligent control cabinet 6 opens the outlet valve 261. The outlet pipe 26 delivers the initially mixed drug to the preparation area 12. The intelligent control cabinet 6 controls the mixer motor 321 to start. At this time, the first propeller impeller 322 starts to stir and mix the drug solution.

[0041] When the liquid level in the drug preparation area 12 gradually rises to the maximum stroke of the paddle mixer 323, the intelligent control cabinet 6 controls the elevator 31 to drive the mixer 32 upwards with the liquid level, so that the paddle mixer 323 is controlled at 2-5 cm below the liquid level. The rotation of the paddle mixer 323 makes the drugs added into the drug tank 1 quickly and evenly dispersed when they come into contact with water, thus avoiding the clumping of drugs.

[0042] When the mixed agent exceeds the height of the first partition 11, it automatically overflows into the solution zone 13. When the mixed agent in the solution zone 13 exceeds the second propeller impeller 42 below, the intelligent control cabinet 6 controls the stirrer motor 41 to start.

[0043] Example 2

[0044] The structure of Example 2 is largely the same as that of Example 1, except that the length of the medicine box 1 is increased, and the solution area 13 is divided into a first solution area 131 and a second solution area 132. The first solution area 131 is the commonly used area, and the second solution area 132 is a spare area. Details are as follows:

[0045] like Figure 2The cation dosing device with a lifting agitator shown includes a reagent tank 1. A vertical first partition 11 divides the tank into a preparation area 12 and a solution area 13. The height of the first partition 11 is less than the height of the reagent tank 1. A dosing and water supply assembly 2 is located at the top of the preparation area 12, and a level gauge 5 is installed within the preparation area 12. A lifting agitator assembly 3 is installed within the preparation area 12. A second partition 14 divides the preparation area into a first solution area 131 and a second solution area 132. Both the first solution area 131 and the second solution area 132 are equipped with a stirrer 4.

[0046] The lifting mixer assembly 3 includes a lifting platform 31 and a mixer 32. The lifting platform 31 includes a base and a telescopic end. The base of the lifting platform 31 is fixed to the top of the medicine tank 1. The mixer 32 is installed on the telescopic end of the lifting platform 31. The rotating shaft of the mixer 32 passes through the medicine tank 1 and extends into the bottom area of ​​the dispensing area 12. The lifting platform 31 includes two spaced-apart support plates 311. The bottom of the support plates 311 is fixed to the top of the medicine tank 1. A top plate 312 is fixed to the top of the two support plates 311. A lifting motor 313 is installed on the top of the top plate 312. A lifting rod 314 is fixed to the bottom of the lifting motor 313. A lifting platform 315 is fixed to the bottom of the lifting rod 314. The mixer 32 is installed on the lifting platform 315. Two guide rods 326 are fixed at intervals between the top plate 312 and the medicine tank 1. The lifting platform 325 is provided with guide holes that cooperate with the guide rods 326. The lifting platform 325 slides up and down along the guide rods 326 through the guide holes.

[0047] The mixer 32 includes a mixer motor 321, a first propulsion impeller 322 is installed at the bottom of the shaft of the mixer motor 321, and paddle impellers 323 are installed at intervals above the first propulsion impeller 322.

[0048] The stirrer 4 includes a stirrer motor 41, the shaft of which extends to the bottom region of the solution zone 13, and two second propeller impellers 42 are mounted at intervals on the shaft of the stirrer motor 41.

[0049] The dosing and water supply assembly 2 includes a dosing device body 21. The top of the dosing device body 21 is provided with a funnel-shaped inlet pipe 22. A dosing motor 23 is installed on the side wall of the dosing device body 21. A dry-wet mixer 24 is connected to the side of the dosing device body 21. The top of the dry-wet mixer 24 is provided with a water inlet pipe 25 and the bottom is provided with a dosing outlet pipe 26. A water inlet valve 251 is provided on the water inlet pipe 25 and a dosing outlet valve 261 is provided on the dosing outlet pipe.

[0050] The top of the medicine box 1 is equipped with an intelligent control cabinet 6. The signal receiving end of the intelligent control cabinet 6 is connected to the signal output end of the liquid level gauge 5. The signal output end of the intelligent control cabinet 6 is connected to the signal receiving ends of the medicine delivery motor 23, the dry and wet mixer 24, the medicine outlet valve 261, the lifting motor 313, the mixer motor 321, and the agitator motor 41.

[0051] Example 3

[0052] The structure of Example 3 is largely the same as that of Example 1, except that the intelligent control cabinet 6 is reduced and the cation dosing device is controlled manually, thereby further reducing manufacturing costs.

[0053] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A cationic dosing device with a lifting and stirring mechanism, comprising a dosing tank (1), characterized in that: The medicine box is provided with a vertical first partition (11) that divides the medicine box into a medicine preparation area (12) and a solution area (13). The height of the partition (11) is less than the height of the medicine box (1). The top of the medicine preparation area (12) is provided with a medicine addition and water supply assembly (2). The medicine preparation area (12) is provided with a lifting and stirring assembly (3). The solution area (13) is provided with a stirrer (4).

2. The cationic dosing device with a lifting stirrer according to claim 1, characterized in that: The lifting mixer assembly (3) includes a lifting platform (31) and a mixer (32). The lifting platform (31) is fixed to the top of the medicine box (1), and the mixer (32) is installed on the lifting platform (31). The rotating shaft of the mixer (32) passes through the medicine box (1) and extends into the bottom area of ​​the dispensing area (12).

3. The cationic dosing device with a lifting mixer according to claim 2, characterized in that: The elevator (31) includes two support plates (311) spaced apart. The bottom of the support plates (311) is fixed to the top of the medicine box (1). A top plate (312) is fixed to the top of the two support plates (311). A lifting motor (313) is installed on the top of the top plate (312). A lifting rod (314) is fixed to the bottom of the lifting motor (313). A lifting platform (315) is fixed to the bottom of the lifting rod (314). A mixer (32) is installed on the lifting platform (315).

4. The cationic dosing device with a lifting mixer according to claim 3, characterized in that: Two guide rods (326) are fixed between the top plate (312) and the medicine box (1) at intervals. The lifting platform (315) is provided with guide holes that cooperate with the guide rods (326). The lifting platform (315) slides up and down along the guide rods (326) through the guide holes.

5. The cationic dosing device with a lifting mixer according to claim 2, characterized in that: The mixer (32) includes a mixer motor (321), a first propeller impeller (322) is installed at the bottom of the shaft of the mixer motor (321), and paddle impellers (323) are installed at intervals above the first propeller impeller (322).

6. The cationic dosing device with a lifting stirrer according to claim 1, characterized in that: The stirrer (4) includes a stirrer motor (41), the shaft of which extends to the bottom region of the solution zone (13), and two second propeller impellers (42) are mounted at intervals on the shaft of the stirrer motor (41).

7. The cationic dosing device with a lifting stirrer according to claim 1, characterized in that: The dosing and water supply assembly (2) includes a dosing device body (21), the top of which is provided with a funnel-shaped inlet pipe (22), a dosing motor (23) is installed on the side wall of the dosing device body (21), a dry-wet mixer (24) is connected to the side of the dosing device body (21), the top of which is provided with a water inlet pipe (25) and the bottom of which is provided with a dosing outlet pipe (26), the water inlet pipe (25) is provided with a water inlet valve (251), and the dosing outlet pipe (26) is provided with a dosing outlet valve (261).

8. The cationic dosing device with a lifting mixer according to claim 1, characterized in that: The dispensing area (12) is equipped with a level gauge (5).

9. The cationic dosing device with a lifting mixer according to claim 1, characterized in that: The solution zone (13) is provided with a second partition (14) to divide the solution zone (13) into a first solution zone (131) and a second solution zone (132). Both the first solution zone (131) and the second solution zone (132) are provided with a stirrer (4).

10. The cationic dosing device with a lifting stirrer according to any one of claims 1 to 9, characterized in that: The top of the medicine box (1) is equipped with an intelligent control cabinet (6), and the signal receiving end of the intelligent control cabinet (6) is connected to the signal output end of the liquid level gauge (5); the signal output end of the intelligent control cabinet (6) is connected to the signal receiving ends of the medicine delivery motor (23), the dry and wet mixer (24), the medicine outlet valve (261), the lifting motor (313), the mixer motor (321), and the agitator motor (41).

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