Dosing device for improving dissolving efficiency of flocculating agent

Abstract

The utility model discloses a dosing device for improving flocculant dissolving efficiency, which comprises a dissolving tank, a hot water tank and a dosing mechanism, the inside of the dissolving tank is sequentially divided into a first-stage dissolving chamber, a second-stage dissolving chamber and a third-stage dissolving chamber by two partition plates, the upper part of each partition plate is provided with an overflow hole, the dosing mechanism is arranged above the first-stage dissolving chamber, and the second-stage dissolving chamber is arranged above the third-stage dissolving chamber. A hot water pipe is connected between the hot water tank and the first-stage dissolving chamber, a return pipe is connected between the third-stage dissolving chamber and the first-stage dissolving chamber, a first water pump and a second water pump are respectively mounted on the hot water pipe and the return pipe, and stirring mechanisms are respectively arranged in the first-stage dissolving chamber, the second-stage dissolving chamber and the third-stage dissolving chamber. The flocculating agent is dissolved by hot water, so that the dissolving efficiency of the flocculating agent can be effectively improved; by utilizing water overflow and circular flow, the flocculant solution is stirred for multiple times in the three dissolving chambers, so that the prepared flocculant solution is uniform in concentration and sufficient in dissolution, and the sewage treatment operation effect and cost of the subsequent process are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flocculant dosing, and in particular relates to a dosing device for improving the dissolution efficiency of a flocculant. Background Art

[0002] Flocculant is a polymer compound that can coagulate fine suspended matter or colloids dispersed in sewage to form a precipitate. It is one of the most commonly used agents in sewage treatment plants. Flocculant is a solid substance in powder or granular form, which needs to be dissolved in water before it can play its coagulation role. Therefore, the dissolution efficiency of flocculant is directly related to the operation effect of subsequent sewage treatment. The existing technology generally adds solid flocculant into the dosing box at one time, and then uses a stirring device to stir and dissolve. This method is not only time-consuming and labor-intensive, but also very likely to cause insufficient dissolution of flocculant and unstable concentration of agent, which directly affects the operation effect of subsequent sewage treatment processes, indirectly leads to high sludge moisture content, and increases sludge disposal costs and agent use costs. Therefore, it is urgent to optimize the structure of the existing flocculant dosing device to improve the dissolution efficiency of the flocculant, make the concentration of the prepared flocculant solution uniform, improve the operation effect of subsequent sewage treatment, reduce the moisture content of the sludge, and reduce the sludge disposal costs and agent use costs. Utility Model Content

[0003] In view of the deficiencies in the background technology, the utility model provides a dosing device for improving the dissolution efficiency of flocculants, which can improve the dissolution efficiency of flocculants, make the concentration of the prepared flocculant solution uniform, improve the operation effect of subsequent sewage treatment, reduce the water content of sludge, and reduce the sludge disposal cost and the cost of using chemicals.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A dosing device for improving the dissolution efficiency of flocculant, characterized in that it includes a dissolution box, a hot water tank and a dosing mechanism, the interior of the dissolution box is divided into a primary dissolution chamber, a secondary dissolution chamber and a tertiary dissolution chamber in sequence by two partitions, each of the partitions is provided with an overflow hole on the upper part, a dosing mechanism is provided above the primary dissolution chamber, a hot water pipe is connected between the hot water tank and the primary dissolution chamber, a reflux pipe is connected between the tertiary dissolution chamber and the primary dissolution chamber, a first water pump and a second water pump are respectively installed on the hot water pipe and the reflux pipe, and a stirring mechanism is respectively provided in the primary dissolution chamber, the secondary dissolution chamber and the tertiary dissolution chamber.

[0006] Preferably, the stirring mechanism comprises a stirring motor, a stirring paddle and a stirring blade, the stirring motor is connected to the stirring paddle, and the stirring paddle is provided with two stirring blades which are parallel and spaced apart from each other.

[0007] Preferably, the drug adding mechanism comprises a drug storage chamber, a drug adding tube connected to the lower end of the drug storage chamber, and a screw feeder. The screw feeder is located at the connection between the drug storage chamber and the drug adding tube, and the screw feeder is connected to a drug adding motor.

[0008] Preferably, two diverter plates are symmetrically distributed below the dosing pipe, each of the diverter plates is tilted and a hot water nozzle is provided above it, and each of the hot water nozzles is connected to a hot water pipe.

[0009] Preferably, the two diverter plates are connected to each other at one end close to the dosing tube, and are in an inverted V shape as a whole.

[0010] Preferably, the angle between each of the diverter plates and the horizontal plane is 1-15°.

[0011] Preferably, each of the nozzles is arranged at an angle, and the surface where the water outlet end is located is parallel to the corresponding diverter plate.

[0012] Preferably, a water inlet pipe is provided above the hot water tank, and a steam delivery pipe is provided inside the hot water tank, and at least two air outlet holes are evenly spaced apart on the steam delivery pipe.

[0013] Preferably, a liquid outlet pipe is connected to the lower portion of one side of the tertiary dissolution chamber, and a liquid outlet control valve is provided on the liquid outlet pipe.

[0014] Preferably, the lower parts of the primary dissolution chamber and the secondary dissolution chamber are both provided with drain holes, and the reflux pipe is provided with a reflux control valve.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The utility model can effectively improve the dissolution efficiency of the flocculant by adding a hot water tank and using hot water to dissolve the flocculant. At the same time, the overflow and circulation of the water body (backflow between the third-level dissolution chamber and the first-level dissolution chamber) are used to stir the flocculant solution in the three dissolution chambers for many times, so that the concentration of the prepared flocculant solution is uniform and fully dissolved, which effectively improves the operation effect of the subsequent process sewage treatment, reduces the water content of the sludge, and reduces the sludge disposal cost and the cost of using the reagents.

[0017] (2) The utility model uses a screw feeder to control the dosage and dosage speed of the flocculant. The diverter plate at the bottom of the feeding pipe can increase the placement position of the flocculant, and uses a hot water nozzle to pre-dissolve and divert the flocculant, thereby further improving the dissolution efficiency of the flocculant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0019] Figure 1It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0021] Figure 3 This is a schematic diagram of the connection structure of two diverter plates of the utility model;

[0022] In the figure: 1. dissolution box, 101. primary dissolution chamber, 102. secondary dissolution chamber, 103. tertiary dissolution chamber, 2. hot water tank, 3. partition, 301. overflow hole, 4. hot water pipe, 5. reflux pipe, 6. first water pump, 7. second water pump, 8. stirring motor, 9. stirring paddle, 10. stirring blade, 11. drug storage chamber, 12. dosing pipe, 13. screw feeder, 14. diverter plate, 15. hot water nozzle, 16. water inlet pipe, 17. steam delivery pipe, 18. air outlet, 19. liquid outlet pipe, 20. liquid outlet control valve, 21. emptying hole, 22. reflux control valve, 23. flocculant. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1As shown, a dosing device for improving the dissolution efficiency of a flocculant comprises a dissolution box 1, a hot water tank 2 and a dosing mechanism. The interior of the dissolution box is divided into a primary dissolution chamber 101, a secondary dissolution chamber 102 and a tertiary dissolution chamber 103 in sequence by two partitions 3. An overflow hole 301 is provided on the upper part of each partition. The position of the overflow hole can be freely set according to actual needs. When the height of the solution in the primary dissolution chamber reaches the position of the overflow hole (on the partition between the primary dissolution chamber and the secondary dissolution chamber), the solution overflows into the secondary dissolution chamber; when the height of the solution in the secondary dissolution chamber reaches the position of the overflow hole (on the partition between the secondary dissolution chamber and the tertiary dissolution chamber), the solution overflows into the secondary dissolution chamber. After reaching the position of the partition between the secondary dissolution chambers, it overflows into the tertiary dissolution chamber. A dosing mechanism is provided above the primary dissolution chamber. A hot water pipe 4 is connected between the hot water tank and the primary dissolution chamber. A water inlet pipe 16 is provided above the hot water tank, which can be connected to an external water source. A steam delivery pipe 17 is provided inside the hot water tank, and at least two air outlets 18 are evenly spaced on the steam delivery pipe. In this embodiment, the excess waste heat of boiler steam discharged by the enterprise is fully utilized to heat the water body, which not only improves the utilization rate of energy, but also improves the dissolution efficiency of flocculants and reduces the cost of sewage treatment. A reflux pipe 5 is connected between the third-level dissolution chamber and the first-level dissolution chamber, and a reflux control valve 22 is provided on the reflux pipe. The first water pump 6 and the second water pump 7 are respectively installed on the hot water pipe and the reflux pipe to facilitate the transportation of hot water and solution. The first-level dissolution chamber and the second-level dissolution chamber are both provided with an emptying hole 21 at the bottom to facilitate the discharge of the residual solution inside. A liquid outlet pipe 19 is connected to the lower part of one side of the third-level dissolution chamber, and a liquid outlet control valve 20 is provided on the liquid outlet pipe. The liquid outlet pipe can be connected to the subsequent sewage treatment equipment. A stirring mechanism is respectively provided in the first-level dissolution chamber, the second-level dissolution chamber and the third-level dissolution chamber. The stirring mechanism in each dissolution chamber works independently to improve the stirring efficiency. The stirring mechanism includes a stirring motor 8, a stirring paddle 9 and a stirring blade 10. The stirring motor is connected to the stirring paddle. The stirring paddle is provided with two stirring blades that are parallel and spaced apart from top to bottom. The height of the stirring blade can also be freely set according to needs.

[0027] like Figure 1 and Figure 2 As shown, the dosing mechanism includes a drug storage chamber 11, a dosing tube 12 connected to the lower end of the drug storage chamber, and a screw feeder 13. The screw feeder is located at the connection between the drug storage chamber and the dosing tube. The size of the screw feeder matches the inner diameter of the dosing tube, which can effectively control the dosage and dosing speed of the flocculant. The screw feeder is connected to a dosing motor (not shown in the figure) to facilitate connection with the control system of the sludge treatment system to achieve automatic control. In this embodiment, the screw feeder includes four feeding blades. When two of the feeding blades are in contact with the inner wall of the dosing tube, the channel between the drug storage chamber and the dosing tube is closed; when the screw feeder is rotated a certain angle, the channel between the drug storage chamber and the dosing tube is opened. Figure 3As shown, two diverter plates 14 are symmetrically distributed below the dosing tube, each diverter plate is tilted and a hot water nozzle 15 is arranged above it, each hot water nozzle is connected to the hot water pipe, and the hot water sprayed from the hot water nozzle can disperse, dilute and pre-dissolve the flocculant on the diverter plate, effectively avoiding the flocculant entering the primary dissolution chamber from the dosing tube from being concentrated in the same position, thereby improving the dissolution efficiency of the flocculant. The two diverter plates are connected to each other at one end close to the dosing tube, and the whole is in an inverted V shape. The angle between each diverter plate and the horizontal plane is 1-15°. In this embodiment, the inclination angle of the diverter plate is 5°, and each nozzle is tilted, and the surface where the water outlet end is located is parallel to the corresponding diverter plate, so that the hot water sprayed from the nozzle is in positive contact with the flocculant.

[0028] The working principle of the utility model is as follows:

[0029] like Figures 1 to 3 As shown, when in use, the flocculant 23 is first put into the drug storage chamber 11, and the speed of the dosing motor is controlled to control the feeding amount and feeding speed of the flocculant 23. The flocculant 23 falls on the two diverter plates 14 from the dosing pipe 12; at the same time, the water in the hot water tank 2 is heated by steam to increase the water temperature, and the first water pump 6 transports the hot water in turn through the hot water pipe 4 and the hot water nozzle 15. The sprayed hot water disperses the flocculant 23 on the diverter plate 14 and flows into the primary dissolution chamber 101. The stirring mechanism in the primary dissolution chamber performs the first-stage stirring on the solution. When the solution height in the primary dissolution chamber 101 reaches the position of the overflow hole 301, the solution overflows to the secondary dissolution chamber 102 and performs the second-stage stirring. By analogy, the solution in the tertiary dissolution chamber 103 after the third-stage stirring is refluxed to the first-stage dissolution chamber 101 under the action of the second water pump 7, and is stirred again to improve the uniformity of the solution concentration of the flocculant and ensure the subsequent sewage treatment effect.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A dosing device for improving the dissolution efficiency of flocculants, Features: It includes a dissolution box, a hot water tank and a dosing mechanism. The interior of the dissolution box is divided into a primary dissolution chamber, a secondary dissolution chamber and a tertiary dissolution chamber in sequence by two partitions. An overflow hole is opened on the upper part of each partition. A dosing mechanism is arranged above the primary dissolution chamber. A hot water pipe is connected between the hot water tank and the primary dissolution chamber. A reflux pipe is connected between the tertiary dissolution chamber and the primary dissolution chamber. A first water pump and a second water pump are respectively installed on the hot water pipe and the reflux pipe. A stirring mechanism is respectively arranged in the primary dissolution chamber, the secondary dissolution chamber and the tertiary dissolution chamber.

2. A dosing device for improving the dissolution efficiency of a flocculant as claimed in claim 1, Features: The stirring mechanism comprises a stirring motor, a stirring paddle and a stirring blade. The stirring motor is connected to the stirring paddle, and the stirring paddle is provided with two stirring blades which are parallel and spaced apart from each other.

3. A dosing device for improving flocculant dissolution efficiency as claimed in claim 1, Features: The medicine adding mechanism comprises a medicine storage chamber, a medicine adding pipe connected to the lower end of the medicine storage chamber and a screw feeder. The screw feeder is located at the connection between the medicine storage chamber and the medicine adding pipe, and the screw feeder is connected to a medicine adding motor.

4. A dosing device for improving flocculant dissolution efficiency as claimed in claim 3, Features: Two diverter plates are symmetrically distributed below the dosing pipe. Each of the diverter plates is tilted and a hot water nozzle is disposed above the diverter plates. Each of the hot water nozzles is connected to a hot water pipe.

5. A dosing device for improving the dissolution efficiency of a flocculant as claimed in claim 4, Features: The two diverter plates are connected to each other at one end close to the dosing tube, and are in an inverted V shape as a whole.

6. A dosing device for improving the dissolution efficiency of a flocculant as claimed in claim 5, Features: The angle between each diverter plate and the horizontal plane is 1-15°.

7. A dosing device for improving flocculant dissolution efficiency as claimed in claim 4, Features: Each of the nozzles is tilted, and the surface where the water outlet end is located is parallel to the corresponding diverter plate.

8. A dosing device for improving flocculant dissolution efficiency as claimed in claim 1, Features: A water inlet pipe is arranged above the hot water tank, and a steam delivery pipe is arranged inside the hot water tank. At least two air outlet holes are evenly spaced and distributed on the steam delivery pipe.

9. A dosing device for improving flocculant dissolution efficiency as claimed in claim 1, Features: A liquid outlet pipe is connected to the lower part of one side of the three-stage dissolution chamber, and a liquid outlet control valve is arranged on the liquid outlet pipe.

10. A dosing device for improving flocculant dissolution efficiency as claimed in claim 1, Features: The lower parts of the primary dissolution chamber and the secondary dissolution chamber are both provided with emptying holes, and the reflux pipe is provided with a reflux control valve.

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