Liquid raw material proportioning device for polymeric ferric sulfate production

Abstract

The utility model relates to water treatment agent production equipment technical field, specifically disclose a kind of liquid raw material proportioning device for polymeric ferric sulfate production, including mixing box, the outside of mixing box is provided with oxidizing agent storage tank and reducing agent storage tank, conveying pipe is communicated between oxidizing agent storage tank and reducing agent storage tank and mixing box, the outer wall of two conveying pipes is provided with conveying pump;The inside of mixing box is provided with stirring structure, by inside and outside double-ring reverse stirring structure, eliminate mixed dead angle, significantly improve the fusion uniformity of liquid;Combination flow dynamic monitoring and oxidation-reduction potential real-time feedback, realize double-parameter closed-loop control, accurately maintain oxidizing agent and reducing agent proportioning;Bottom stirring blade effectively prevent sediment accumulation, double discharge design accelerates product discharge;Overall system degree of automation is high, solve the problem of uneven mixing, proportioning out of control, detection lag in traditional process, ensure the consistency and stability of polymeric ferric sulfate product.

Description

Technical Field

[0001] This utility model relates to the technical field of water treatment agent production equipment, and specifically discloses a liquid raw material proportioning device for the production of polyferric sulfate. Background Technology

[0002] Polyferric sulfate, as a highly efficient inorganic polymeric flocculant, is widely used in drinking water purification, industrial wastewater treatment, and other fields. Its production process requires mixing an oxidant (such as hydrogen peroxide) and a reducing agent (such as ferrous sulfate solution) in a specific molar ratio. The uniformity of mixing and the accuracy of the ratio directly determine the basicity and flocculation efficiency of the product.

[0003] However, existing proportioning devices have significant drawbacks:

[0004] Insufficient mixing efficiency: Traditional stirring structures are unable to simultaneously handle the different rheological properties of high-viscosity reducing agents and low-viscosity oxidizing agents, resulting in mixing dead zones within the reactor and a decrease in product uniformity.

[0005] When the raw material flow rate fluctuates, manual or simple proportional valve control cannot compensate for the ratio deviation in real time, and the phenomenon of excessive oxidant and reducing agent occurs frequently, which not only wastes raw materials, but also leads to excessive free iron ion content.

[0006] The mixing process lacks in-situ real-time detection methods, and the reaction status and endpoint rely on offline testing, which delays the opportunity to adjust the process. Utility Model Content

[0007] This invention proposes a liquid raw material proportioning device for the production of polyferric sulfate. Through an inner and outer double-ring counter-stirring structure, it eliminates mixing dead zones and significantly improves the uniformity of liquid blending. Combined with dynamic flow monitoring and real-time feedback of oxidation-reduction potential, it achieves dual-parameter closed-loop control and accurately maintains the ratio of oxidant to reducing agent.

[0008] This utility model is implemented as follows: a liquid raw material proportioning device for the production of polyferric sulfate includes a mixing tank, an oxidant storage tank and a reducing agent storage tank are arranged on the outside of the mixing tank, and a conveying pipe is connected between the oxidant storage tank and the reducing agent storage tank and the mixing tank. A conveying pump is arranged on the outer wall of the two conveying pipes.

[0009] The mixing tank is equipped with a mixing structure, which includes a turntable rotatably connected to the top of the mixing tank. Two symmetrically distributed inclined rods are fixedly connected to the lower outer wall of the turntable. The other end of each of the two inclined rods is fixedly connected to an outer ring mixing rod. A central column is fixedly connected to the bottom of the mixing tank. A first motor is installed on the upper part of the central column. The output end of the first motor extends to the top of the central column and is fixedly connected to a connecting rod. The connecting rod is horizontally arranged and both ends are fixedly connected to a vertically arranged connecting shaft. Multiple evenly distributed inner ring mixing blades are fixedly connected to the outer walls of the two connecting shafts.

[0010] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, both of the outer walls of the two conveying pipes are equipped with electromagnetic flow meters and electric regulating valves.

[0011] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, an ORP online detector is provided on the outer wall of the mixing tank, and the detection end of the ORP online detector extends into the interior of the mixing tank.

[0012] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, a PLC controller is installed on the outer wall of the mixing tank. The input terminal of the PLC controller is electrically connected to two electromagnetic flow meters and an ORP online detector, and the output terminal is electrically connected to two electric regulating valves.

[0013] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, both of the bottom ends of the connecting shafts are fixedly connected with bottom stirring blades.

[0014] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, the bottom left and right sides of the mixing tank are connected to discharge pipes, and the outer walls of the two discharge pipes are provided with discharge valves.

[0015] As a preferred embodiment of the liquid raw material proportioning device for the production of polyferric sulfate according to this utility model, a second motor for driving the turntable to rotate is installed on the top of the mixing tank.

[0016] The beneficial effects of this utility model are:

[0017] This device eliminates mixing dead zones and significantly improves the uniformity of liquid mixing through an inner and outer double-ring counter-stirring structure. Combined with dynamic flow monitoring and real-time feedback of oxidation-reduction potential, it achieves dual-parameter closed-loop control, accurately maintaining the ratio of oxidant to reductant. Bottom stirring blades effectively prevent sedimentation and accumulation, and the dual-discharge design accelerates product discharge. The overall system has a high degree of automation, solving the problems of uneven mixing, uncontrolled ratio, and delayed detection in traditional processes, and ensuring the consistency and stability of polyferric sulfate products. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a front sectional view of the overall structure of this utility model;

[0020] Figure 2 This is the overall front view of the external structure of this utility model.

[0021] The markings in the diagram are: 1. Mixing tank; 2. Oxidizing agent storage tank; 3. Reducing agent storage tank; 4. Conveying pipe; 5. Conveying pump; 6. Turntable; 7. Inclined rod; 8. Outer ring stirring rod; 9. Central column; 10. First motor; 11. Connecting rod; 12. Connecting shaft; 13. Inner ring stirring blade; 14. Electromagnetic flow meter; 15. Electric regulating valve; 16. ORP online detector; 17. PLC controller; 18. Bottom stirring blade; 19. Discharge pipe; 20. Discharge valve; 21. Second motor. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0023] Please see Figure 1-2 A liquid raw material proportioning device for the production of polyferric sulfate includes a mixing tank 1, an oxidant storage tank 2 and a reducing agent storage tank 3 are arranged on the outside of the mixing tank 1, and a conveying pipe 4 is connected to both the oxidant storage tank 2 and the reducing agent storage tank 3 and the mixing tank 1. A conveying pump 5 is arranged on the outer wall of both conveying pipes 4.

[0024] The mixing tank 1 is equipped with a stirring structure, which includes a turntable 6 rotatably connected to the top of the mixing tank 1. Two symmetrically distributed inclined rods 7 are fixedly connected to the lower outer wall of the turntable 6. The other end of each of the two inclined rods 7 is fixedly connected to an outer ring stirring rod 8. A central column 9 is fixedly connected to the bottom of the mixing tank 1. A first motor 10 is installed on the upper part of the central column 9. The output end of the first motor 10 extends to the top of the central column 9 and is fixedly connected to a connecting rod 11. The connecting rod 11 is horizontally arranged and both ends are fixedly connected to a vertically arranged connecting shaft 12. Multiple evenly distributed inner ring stirring blades 13 are fixedly connected to the outer walls of the two connecting shafts 12.

[0025] In this embodiment: the oxidant storage tank 2 and the reducing agent storage tank 3 inject raw materials into the mixing tank 1 through the delivery pump 5 and the delivery pipe 4; the turntable 6 is driven by the second motor 21, which drives the inclined rod 7 and the outer ring stirring rod 8 to rotate to form a large-scale vortex. At the same time, the first motor 10 in the central column 9 drives the connecting rod 11, which causes the inner ring stirring blade 13 on the connecting shaft 12 to rotate in the opposite direction, forming an inner and outer double shear flow field to eliminate mixing dead zones; the electromagnetic flowmeter 14 monitors the flow rate in real time, and the PLC controller 17 dynamically adjusts the opening of the electric regulating valve 15 according to the flow data and the oxidation-reduction potential signal of the ORP online detector 16 to ensure accurate molar ratio; the bottom stirring blade 18 enhances the bottom flowability, and the double discharge pipe 19 cooperates with the discharge valve 20 to achieve rapid discharge.

[0026] As a technical optimization of this utility model, electromagnetic flowmeters 14 and electric regulating valves 15 are provided on the outer walls of both conveying pipes 4.

[0027] In this embodiment, the electromagnetic flowmeter 14 and the electric regulating valve 15 form a flow closed loop to compensate for the ratio deviation caused by viscosity fluctuations in real time and avoid raw material waste.

[0028] As a technical optimization of this utility model, an ORP online detector 16 is provided on the outer wall of the mixing tank 1, and the detection end of the ORP online detector 16 extends into the interior of the mixing tank 1.

[0029] In this embodiment, the ORP online detector 16 monitors the reaction liquid potential in situ, directly reflecting the redox state and preventing excessive free iron ions.

[0030] As a technical optimization of this utility model, a PLC controller 17 is installed on the outer wall of the mixing tank 1. The input end of the PLC controller 17 is electrically connected to two electromagnetic flowmeters 14 and an ORP online detector 16, and the output end is electrically connected to two electric regulating valves 15.

[0031] In this embodiment, the PLC controller 17 integrates flow and potential data and dynamically optimizes the adjustment logic through dual-parameter feedback to improve control accuracy.

[0032] As a technical optimization of this utility model, bottom stirring blades 18 are fixedly connected to the bottom ends of both connecting shafts 12.

[0033] In this embodiment: the bottom stirring blade 18 rotates with the connecting shaft 12, breaking up the bottom sediment and solving the problem of sedimentation of high-viscosity reducing agent.

[0034] As a technical optimization of this utility model, the bottom left and right sides of the mixing tank 1 are connected to discharge pipes 19, and the outer walls of the two discharge pipes 19 are provided with discharge valves 20.

[0035] In this embodiment, the dual discharge pipes 19 are symmetrically arranged to shorten the discharge path and reduce product loss caused by residual liquid.

[0036] As a technical optimization of this utility model, a second motor 21 for driving the turntable 6 to rotate is installed on the top of the mixing tank 1.

[0037] In this embodiment: the second motor 21 independently drives the outer ring stirring system to achieve graded speed control and adapt to the needs of different mixing stages.

[0038] The working principle and usage process of this utility model are as follows: During use, the delivery pump 5 is started to pump the oxidant and reductant from the oxidant storage tank 2 and the reductant storage tank 3 into the mixing tank 1, respectively. The second motor 21 drives the turntable 6 to rotate the inclined rod 7 and the outer ring stirring rod 8 clockwise. Simultaneously, the first motor 10 is started to drive the connecting rod 11 to rotate the connecting shaft 12 and the inner ring stirring blade 13 counterclockwise, and the fluid is sheared by double-layer counter-stirring. The electromagnetic flowmeter 14 collects two flow data in real time, and the ORP online detector 16 monitors the potential of the mixture. The data is uploaded to the PLC controller 17. The PLC compares the set molar ratio with the measured flow rate and potential value, and outputs a signal to adjust the opening of the electric regulating valve 15 to maintain a stable ratio. After the reaction is completed, the discharge valve 20 is opened to discharge the product through the double discharge pipe 19.

[0039] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0040] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A liquid raw material proportioning device for the production of polyferric sulfate, comprising a stirring tank (1), characterized in that: An oxidant storage tank (2) and a reducing agent storage tank (3) are provided on the outside of the mixing tank (1). Both the oxidant storage tank (2) and the reducing agent storage tank (3) are connected to the mixing tank (1) by a conveying pipe (4). A conveying pump (5) is provided on the outer wall of both conveying pipes (4). The mixing tank (1) is equipped with a stirring structure inside. The stirring structure includes a turntable (6) rotatably connected to the top of the mixing tank (1). Two symmetrically distributed inclined rods (7) are fixedly connected to the lower outer wall of the turntable (6). The other end of each of the two inclined rods (7) is fixedly connected to an outer ring stirring rod (8). A central column (9) is fixedly connected to the bottom of the mixing tank (1). A first motor (10) is installed on the upper part of the central column (9). The output end of the first motor (10) extends to the top of the central column (9) and is fixedly connected to a connecting rod (11). The connecting rod (11) is horizontally arranged and both ends are fixedly connected to a vertically arranged connecting shaft (12). The outer walls of the two connecting shafts (12) are fixedly connected to multiple evenly distributed inner ring stirring blades (13).

2. The liquid raw material proportioning device for the production of polyferric sulfate according to claim 1, characterized in that: Electromagnetic flowmeters (14) and electric regulating valves (15) are installed on the outer walls of both conveying pipes (4).

3. The liquid raw material proportioning device for the production of polyferric sulfate according to claim 2, characterized in that: An ORP online detector (16) is provided on the outer wall of the mixing tank (1), and the detection end of the ORP online detector (16) extends into the interior of the mixing tank (1).

4. The liquid raw material proportioning device for the production of polyferric sulfate according to claim 3, characterized in that: The outer wall of the mixing tank (1) is equipped with a PLC controller (17). The input end of the PLC controller (17) is electrically connected to two electromagnetic flow meters (14) and an ORP online detector (16), and the output end is electrically connected to two electric regulating valves (15).

5. The liquid raw material proportioning device for producing polymeric ferric sulfate according to claim 1, characterized in that: Bottom stirring blades (18) are fixedly connected to the bottom ends of both connecting shafts (12).

6. The liquid raw material proportioning device for the production of polyferric sulfate according to claim 1, characterized in that: The bottom left and right sides of the mixing tank (1) are connected to discharge pipes (19), and the outer walls of the two discharge pipes (19) are provided with discharge valves (20).

7. The liquid raw material proportioning device for the production of polyferric sulfate according to claim 1, characterized in that: The top of the mixing tank (1) is equipped with a second motor (21) for driving the turntable (6) to rotate.

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