PAC precise dosing device

Abstract

The utility model discloses a PAC accurate dosing device, which relates to the technical field of medicament dosing equipment, and comprises a plurality of solution boxes, stirrers and tap water pipes are arranged at the tops of the solution boxes, liquid outlet pipes are connected to the bottoms of the solution boxes, the plurality of liquid outlet pipes are gathered on a metering pump liquid inlet pipe, at least one metering pump is connected to the metering pump liquid inlet pipe, and the metering pump is connected with a metering pump. The metering pump is connected to the agent feeding pipe through a metering pump liquid outlet pipe, a powder feeding mechanism used for quantitatively feeding PAC powder is further fixedly arranged at the top of the solution box, the powder feeding mechanism comprises a powder box, a discharging pipe is arranged at the bottom of the powder box, and a first electric material stop valve is arranged on the discharging pipe. The powder PAC is quantitatively and accurately fed through the powder feeding mechanism, accurate preparation of powder chemicals can be rapidly completed, accurate feeding of chemical solutions can be achieved through multiple sets of metering pumps, the problem of chemical waste caused by extensive feeding of chemicals can be avoided, and the chemical solution feeding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medicament dosing devices, and specifically relates to a PAC precise dosing device. Background Art

[0002] The reagent dosing system is widely used in sewage treatment in urban sewage treatment plants and industrial sewage treatment plants. The reagent raw materials added by the dosing system are divided into powder and liquid materials. The liquid material can be easily and accurately injected through the flow pump, but the powder needs to be weighed manually, such as the addition of PAC (polyaluminum chloride). PAC is a water-soluble powdered inorganic polymer coagulant. After weighing, it is added to the solution tank. This process is relatively cumbersome and cannot achieve rapid dosing preparation. In addition, the dosing of the existing dosing system is too extensive and the control is too traditional. It all relies on manual opening. Due to human factors, the dosage of the reagent cannot be accurately controlled, resulting in serious waste of reagents, high labor intensity, and low dosing efficiency. To this end, we designed and proposed a PAC precision dosing device. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art that the powdered medicine cannot be configured and the dosage of the medicine cannot be accurately controlled, and a PAC accurate dosing device is proposed. The PAC accurate dosing device can realize the rapid configuration of the powdered medicine and can realize the accurate control of the dosage of the medicine.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A PAC precision dosing device is designed, comprising a plurality of solution tanks, wherein a stirrer and a tap water pipe are arranged on the top of the solution tank, a first flow meter and a first solenoid valve are arranged on the tap water pipe, a liquid outlet pipe is connected to the bottom of the solution tank, a plurality of the liquid outlet pipes converge on a metering pump liquid inlet pipe, at least one metering pump is connected to the metering pump liquid inlet pipe, the metering pump is connected to a drug dosing pipe through the metering pump liquid outlet pipe, a powder dosing mechanism for quantitatively dosing PAC powder is also fixedly arranged on the top of the solution tank, the powder dosing mechanism comprises a powder box, a discharge pipe is arranged at the bottom of the powder box, and a first electric material cut-off valve is arranged on the discharge pipe.

[0006] It also includes a controller, wherein a data acquisition end of the controller is connected to the first flow meter via a data line, and a control output end of the controller is connected to the first solenoid valve, a stirrer, a metering pump and a first electric material shut-off valve via a data line.

[0007] Furthermore, the liquid outlet pipe is also provided with a Y-type filter and a second solenoid valve, and the second solenoid valve is connected to the controller via a data line.

[0008] Furthermore, a pulse damper, a pressure gauge and a check valve are sequentially arranged on the liquid outlet pipe of the metering pump, and the pulse damper is arranged vertically.

[0009] Furthermore, the liquid outlet pipe of the metering pump is also connected to a reflux pipe, and a safety valve is provided on the reflux pipe.

[0010] Furthermore, a second flow meter is provided on the liquid inlet pipe of the metering pump, and the second flow meter is connected to the controller via a data line.

[0011] Furthermore, the feed pipe is sleeved with an adaptable sliding sleeve, the outer side of the sliding sleeve is provided with a fixing bolt, the sliding sleeve is fixedly provided with a second electric material cut-off valve, the feed pipe is provided with a slide groove for moving the second electric material cut-off valve, and the outer side wall of the feed pipe is provided with a scale.

[0012] Furthermore, a magnetic flap level gauge is connected to the side of the solution tank, and the magnetic flap level gauge is connected to the controller via a data cable.

[0013] The utility model proposes a PAC precision dosing device, which has the beneficial effects that: the powder PAC of the utility model can achieve quantitative and precise dosing through the powder dosing mechanism, and can quickly complete the precise addition of the powder without weighing the powder, thereby improving the preparation efficiency of the pharmaceutical solution. In addition, the precise dosing of the pharmaceutical solution can be achieved through multiple groups of metering pumps, which can avoid the problem of pharmaceutical waste caused by extensive dosing of the pharmaceutical. The automatic dosing of the pharmaceutical also reduces manual intervention, thereby reducing labor intensity and improving the efficiency of pharmaceutical solution dosing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the powder feeding mechanism in Example 1 of the present utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the powder adding mechanism in Example 2 of the present invention.

[0018] The markings in the figure are: 1. Solution tank; 11. Magnetic flap level gauge; 2. Agitator; 3. Controller; 4. Tap water pipe; 41. First flow meter; 42. First solenoid valve; 5. Liquid outlet pipe; 51. Y-type filter; 52. Second solenoid valve; 6. Metering pump; 61. Metering pump liquid inlet pipe; 62. Second flow meter; 63. Metering pump liquid outlet pipe; 64. Pulse damper; 65. Pressure gauge; 66. Check valve; 7. Reflux pipe; 71. Safety valve; 8. Powder dosing mechanism; 81. Powder box; 82. Feed pipe; 83. First electric material shut-off valve; 84. Sliding sleeve; 85. Fixing bolt; 86. Second electric material shut-off valve; 87. Slide; 88. Scale; 9. Agent dosing pipe. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] The structural features of the utility model are now described in detail with reference to the accompanying drawings of the specification.

[0023] Example 1

[0024] See also Figure 1 and Figure 2A PAC precision dosing device includes a plurality of solution tanks 1. In this embodiment, two solution tanks 1 of the same volume are provided. A stirrer 2 and a tap water pipe 4 are provided on the top of the solution tank 1. The stirrer 2 is used for the configuration and stirring of the pharmaceutical solution. The tap water pipe 4 is provided with a first flow meter 41 and a first solenoid valve 42. The first flow meter 41 is used for counting the flow of the tap water pipe 4. The first solenoid valve 42 is used for controlling the water supply of the tap water pipe 4. A liquid outlet pipe 5 is connected to the bottom of the solution tank 1. The plurality of liquid outlet pipes 5 converge on a metering pump inlet pipe 61. A second flow meter 62 is provided on the metering pump inlet pipe 61. At least one metering pump 6 is connected to the metering pump inlet pipe 61. The metering pump 6 is connected to the drug via a metering pump outlet pipe 63. The agent dosing pipe 9, in order to improve the stability of the operation of the metering pump 6, a Y-type filter 51 and a second solenoid valve 52 are arranged on the liquid outlet pipe 5, the Y-type filter 51 can filter the pharmaceutical solution in the solution tank 1, filter out impurities such as particulate matter, and avoid damage to the metering pump 6. A pulse damper 64, a pressure gauge 65 and a check valve 66 are arranged in sequence on the metering pump liquid outlet pipe 63, and the pulse damper 64 is arranged vertically. The setting of the pulse damper 64 can instantly absorb the pulse in the metering pump liquid outlet pipe 63, so as to obtain a stable flow rate and pressure. The setting of the pressure gauge 65 can observe the pressure on the metering pump liquid outlet pipe 63 in real time. The setting of the check valve 66 can avoid the backflow of liquid in the pipeline, thereby protecting the metering pump 6. In order to avoid excessive pressure in the metering pump outlet pipe 63, a reflux pipe 7 is set in the metering pump outlet pipe 63, and a safety valve 71 is provided on the reflux pipe 7. By setting up multiple groups of metering pumps 6, accurate addition of the pharmaceutical solution in the solution tank 1 can be achieved, and the problem of pharmaceutical waste caused by extensive addition of the pharmaceutical solution can be avoided.

[0025] A powder dosing mechanism 8 for quantitatively dosing of PAC powder is also fixedly provided on the top of the solution tank 1. The powder dosing mechanism 8 includes a powder box 81. The volume of the powder box 81 is fixed. A discharge pipe 82 is provided at the bottom of the powder box 81. A first electric material shut-off valve 83 is provided on the discharge pipe 82. When adding PAC, the staff only needs to fill the powder box 81 to accurately determine the amount of PAC added in the powder box 81. The automatic dosing of PAC is achieved through the first electric material shut-off valve 83. The powder PAC is quantitatively and accurately dosed through the powder dosing mechanism 8. There is no need to weigh the powder, so the accurate addition of the powder can be quickly completed, thereby improving the preparation efficiency of the pharmaceutical solution.

[0026] In order to realize the automation of dosing, the embodiment further includes a controller 3, the data acquisition end of the controller 3 is connected to the first flow meter 41 and the second flow meter 62 through a data line, and the control output end of the controller 3 is connected to the first solenoid valve 42, the second solenoid valve 52, the agitator 2, the metering pump 6 and the first electric material cut-off valve 83 through a data line. Among them, the controller 3 is a programmable PLC controller, using the S7-200 type, and the flow acquisition of the first flow meter 41 and the second flow meter 62 is realized through the controller 3, and the automatic control of the first solenoid valve 42, the second solenoid valve 52, the agitator 2, the metering pump 6 and the first electric material cut-off valve 83 is realized, so as to realize the automatic dosing of the pharmaceutical solution, thereby reducing manual intervention, reducing labor intensity, and improving the efficiency of the dosing of the pharmaceutical solution.

[0027] In addition, a magnetic flap level gauge 11 is connected to the side of the solution tank 1, and the magnetic flap level gauge 11 is connected to the controller 3 via a data line. The magnetic flap level gauge 12 is provided to display the liquid level change in the solution tank 1 in real time, so as to avoid the solution in the solution tank 1 from overflowing.

[0028] The PAC precise dosing device of the utility model has a high degree of automation. On the one hand, it can realize the quantitative and precise delivery of PAC, and on the other hand, it can realize the precise dosing of the pharmaceutical solution, thereby avoiding the problem of pharmaceutical waste caused by extensive dosing of the pharmaceutical, reducing manual intervention, reducing labor intensity, and improving the efficiency of pharmaceutical solution preparation and dosing.

[0029] Example 2

[0030] Reference Figure 3 As another preferred embodiment of the utility model, the difference from embodiment 1 is that a matching sliding sleeve 84 is sleeved on the discharge pipe 82, and a fixing bolt 85 is provided on the outer side of the sliding sleeve 84. The fixing bolt 85 is used to fix the sliding sleeve 84 and the discharge pipe 82, and a second electric material cut-off valve 86 is fixedly provided on the sliding sleeve 84, and a slide groove 87 for moving the second electric material cut-off valve 86 is provided on the discharge pipe 82. A scale 88 is provided on the outer wall of the discharge pipe 82, and the sliding sleeve 84 is adjusted up and down according to the scale 88 to adjust the distance between the second electric material cut-off valve 86 and the first electric material cut-off valve 83, thereby adjusting the powder discharge amount of the discharge pipe 82, and achieving different feed amounts by adjusting the second electric material cut-off valve 86, thereby preparing pharmaceutical solutions of different concentrations or volumes, which is more convenient for controlling and adjusting reagent solutions of different concentrations.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A PAC precision dosing device, comprising a plurality of solution tanks (1), wherein a stirrer (2) and a water pipe (4) are provided on the top of the solution tank (1), wherein a first flow meter (41) and a first solenoid valve (42) are provided on the water pipe (4), wherein: The bottom of the solution tank (1) is connected to a liquid outlet pipe (5), and a plurality of the liquid outlet pipes (5) converge on a metering pump liquid inlet pipe (61). At least one metering pump (6) is connected to the metering pump liquid inlet pipe (61), and the metering pump (6) is connected to the drug dosing pipe (9) via the metering pump liquid outlet pipe (63); A powder dosing mechanism (8) for quantitatively dosing PAC powder is also fixedly disposed on the top of the solution tank (1), the powder dosing mechanism (8) comprising a powder box (81), a feed pipe (82) being disposed at the bottom of the powder box (81), and a first electric material shut-off valve (83) being disposed on the feed pipe (82); It also includes a controller (3), wherein a data acquisition end of the controller (3) is connected to a first flow meter (41) via a data line, and a control output end of the controller (3) is connected to the first solenoid valve (42), the agitator (2), the metering pump (6) and the first electric material shut-off valve (83) via a data line.

2. A PAC precision dosing device according to claim 1, characterized in that: The liquid outlet pipe (5) is also provided with a Y-type filter (51) and a second electromagnetic valve (52), and the second electromagnetic valve (52) is connected to the controller (3) via a data line.

3. A PAC precision dosing device according to claim 1, characterized in that: A pulse damper (64), a pressure gauge (65) and a check valve (66) are sequentially arranged on the metering pump liquid outlet pipe (63), and the pulse damper (64) is arranged vertically.

4. A PAC precision dosing device according to claim 3, characterized in that: The metering pump liquid outlet pipe (63) is also connected to a reflux pipe (7), and a safety valve (71) is provided on the reflux pipe (7).

5. A PAC precision dosing device according to claim 1, characterized in that: A second flow meter (62) is provided on the liquid inlet pipe (61) of the metering pump, and the second flow meter (62) is connected to the controller (3) via a data line.

6. A PAC precision dosing device according to claim 1, characterized in that: The feed tube (82) is sleeved with an adaptable sliding sleeve (84), the outer side of the sliding sleeve (84) is provided with a fixing bolt (85), the sliding sleeve (84) is fixedly provided with a second electric material shut-off valve (86), the feed tube (82) is provided with a slide groove (87) for moving the second electric material shut-off valve (86), and the outer side wall of the feed tube (82) is provided with a scale (88).

7. A PAC precision dosing device according to any one of claims 1 to 6, characterized in that: A magnetic flap liquid level gauge (11) is connected to the side of the solution tank (1), and the magnetic flap liquid level gauge (11) is connected to the controller (3) via a data line.

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