Aeration dissolving device of polyacrylamide and polyacrylamide proportioning device

Abstract

The utility model relates to a polyacrylamide aeration dissolving device and a polyacrylamide proportioning device. The polyacrylamide aeration dissolving device comprises a polyacrylamide bin, the bottom of the polyacrylamide bin is communicated with a spiral feeder, an aeration pre-dissolving mechanism is arranged at a discharge port of the spiral feeder, the aeration pre-dissolving mechanism comprises an aeration tank arranged below the discharge port of the spiral feeder, the aeration tank is communicated with a discharge pipe, and the discharge pipe is communicated with the bottom of the polyacrylamide bin. A discharge pipe is arranged on the aeration tank, a discharge regulating valve is arranged on the discharge pipe, the aeration tank is communicated with a water inlet pipe, a first flow metering and regulating mechanism is arranged on the water inlet pipe, and an aeration nozzle is arranged in the aeration tank and is connected with an air compressor through an aeration pipeline. According to the method, swelled and caked polyacrylamide is subjected to crushing pretreatment through aeration and then is dissolved in water, and caking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polyacrylamide dissolving and proportioning devices, in particular to an aeration dissolving device for polyacrylamide and a polyacrylamide proportioning device. Background Art

[0002] Polyacrylamide has excellent flocculation and precipitation properties and is widely used in the water treatment field. Polyacrylamide products are difficult to dissolve, easily agglomerate, and easily condense after long-term exposure to air. Currently, most polyacrylamide products on the market are dry powders, generally in the form of granules or fine powders with a mesh size of around 20-80. Such products cannot be added directly to water for flocculation and precipitation, but instead need to be dissolved and prepared before use. The characteristic of polyacrylamide dissolution is that it swells first and then dissolves. When powdered polyacrylamide is added to water, it will immediately swell. If too much is added at one time, agglomeration will occur. Once agglomerated, the polyacrylamide is difficult to dissolve and can easily cause blockage accidents in the dosing equipment. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides an aeration and dissolution device for polyacrylamide and a polyacrylamide proportioning device.

[0004] The utility model provides an aeration and dissolution device for polyacrylamide, comprising: a polyacrylamide silo, the bottom of the polyacrylamide silo is connected to a screw feeder, an aeration pre-dissolution mechanism is arranged below the discharge port of the screw feeder, wherein the aeration pre-dissolution mechanism comprises: an aeration tank arranged below the discharge port of the screw feeder, the aeration tank is connected to a discharge pipe, a discharge regulating valve is arranged on the discharge pipe, the aeration tank is connected to a water inlet pipe, a first flow metering and regulating mechanism is arranged on the water inlet pipe, an aeration nozzle is arranged in the aeration tank, and the aeration nozzle is connected to an air compressor via an aeration pipeline.

[0005] Furthermore, a discharge valve with adjustable opening is provided at the bottom discharge port of the polyacrylamide silo, a material level sensor is provided in the polyacrylamide silo, a driving circuit of the discharge valve and the material level sensor are electrically connected to a PLC controller, and the PLC controller is electrically connected to an alarm.

[0006] Furthermore, a first vibration motor is provided at the connection between the screw feeder and the polyacrylamide silo.

[0007] Furthermore, the aeration nozzle includes: a nozzle with an expansion mouth, a core body is arranged in the nozzle, the core body is a combination of a cylinder and a cone, four gas guide plates are provided at the conical end of the core body, the gas guide plates include a straight section located at the tip of the cone and a spiral section located at the blunt end of the cone, and the side wall of the cylindrical section of the core body is arranged with an array of airflow cutting teeth in a rotating manner.

[0008] In a second aspect, the present application provides a polyacrylamide proportioning device, which uses the aeration and dissolution device of polyacrylamide, including: a material tank provided with the aeration and dissolution device of polyacrylamide;

[0009] The chemical tank is connected to the heat-insulating cache water tank, and a second flow metering and regulating component is provided on the pipeline between the heat-insulating cache water tank and the chemical tank, and the second flow metering and regulating component is connected to the PLC controller;

[0010] A stirrer is provided in the material tank;

[0011] A viscometer is provided at the discharge pipe of the material-chemical tank, the discharge pipe of the material-chemical tank is connected to a discharge valve and a discharge pump, and a second liquid level meter is provided in the material-chemical tank.

[0012] Furthermore, a temperature sensor and a heater are provided in the heat-insulating cache water tank, and the temperature sensor and the heater are connected to a PLC controller.

[0013] Furthermore, a first liquid level gauge is provided in the thermal insulation cache water tank, the thermal insulation cache water tank is connected to a water supply pipe provided with an electric water supply valve, and the driving circuits of the first liquid level gauge and the electric water supply valve are connected to a PLC controller.

[0014] Furthermore, the discharge pump is connected to the maturation tank through a pipeline, the discharge pipe of the maturation tank is connected to the electric valve and the delivery pump, the delivery pump is connected to the storage tank through a pipeline, the discharge pipe of the storage tank is provided with a third flow metering and regulating mechanism, a third liquid level gauge is provided in the maturation tank, and a fourth liquid level gauge is provided in the storage tank.

[0015] The above technical solution provided by the embodiment of the utility model has the following advantages compared with the prior art:

[0016] The bottom of the polyacrylamide silo of the present application is connected to a screw feeder, and an aeration pre-dissolution mechanism is provided at the discharge port of the screw feeder. The aeration pre-dissolution mechanism includes: an aeration tank provided below the discharge port of the screw feeder, the aeration tank connected to a discharge pipe, the discharge pipe being provided with a discharge regulating valve, the aeration tank connected to a water inlet pipe, the water inlet pipe being provided with a first flow metering and regulating mechanism, an aeration nozzle provided in the aeration tank, and the aeration nozzle being connected to an air compressor via an aeration pipeline. As shown in the figure, the aeration nozzle includes: a nozzle with an expansion port, the nozzle connected to the aeration pipeline, a core provided in the nozzle, the core being a combination of a cylinder and a cone, the conical end of the core being provided with four gas deflectors, the gas deflectors including a straight section at the tip of the cone and a spiral section at the blunt end of the cone, and the sidewall of the cylindrical section of the core being provided with an array of airflow cutting teeth arranged in a rotating manner. The gas from the aeration pipeline is guided by the gas guide plate and swirls into the airflow cutting tooth array between the nozzle and the core, fully cutting and forming bubbles to achieve aeration. This aeration breaks up the swollen polyacrylamide blocks that fall from the screw feeder into the aeration tank, allowing the polyacrylamide powder to be fully soaked. After the polyacrylamide is soaked, it will not agglomerate when it is put into water, which facilitates subsequent dissolution and avoids blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A schematic diagram of a polyacrylamide proportioning device using an aeration dissolution device for polyacrylamide.

[0020] Figure 2 It is a schematic diagram of the polyacrylamide silo and screw feeder;

[0021] Figure 3 Schematic diagram of aeration nozzle.

[0022] The numbers and meanings in the figure are as follows:

[0023] 1. Polyacrylamide silo, 11. Discharging valve;

[0024] 2. Screw feeder, 21. First vibration motor;

[0025] 3. Aeration pre-dissolution mechanism, 31. Aeration tank, 32. Discharge regulating valve, 33. Discharge pipe, 34. Water inlet pipe, 35. First flow metering and regulating mechanism, 36. Aeration nozzle, 361. Nozzle, 362. Core, 363. Gas guide plate, 364. Airflow cutting teeth, 37. Air compressor;

[0026] 4. Chemical tank, 41. Viscometer, 42. Discharge valve, 43. Discharge pump, 44. Second liquid level gauge;

[0027] 5. Insulated buffer water tank, 51. Temperature sensor, 52. Heater, 53. First liquid level gauge, 54. Electric water supply valve;

[0028] 6. Second flow metering and regulating component;

[0029] 7. Agitator;

[0030] 8. Maturation tank, 81. Electric valve, 82. Delivery pump, 83. Third liquid level gauge;

[0031] 9. Storage tank, 91. Third flow metering and regulating mechanism, 92. Fourth liquid level gauge. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0034] Example 1

[0035] See Figure 1 As shown, the embodiment of the present invention provides an aeration and dissolution device for polyacrylamide, comprising:

[0036] Polyacrylamide silo 1, such as Figure 2As shown, the bottom of the polyacrylamide silo 1 is connected to a screw feeder 2, and an aeration and pre-dissolution mechanism 3 is provided at the discharge port of the screw feeder 2. In a specific implementation, the polyacrylamide silo 1 is bucket-shaped, and a discharge valve 11 with an adjustable opening is provided at the bottom discharge port of the polyacrylamide silo 1. A level sensor is provided within the polyacrylamide silo 1, and the drive circuit of the discharge valve 11 and the level sensor are electrically connected to a PLC controller, which is electrically connected to an alarm. The discharge valve 11 adjusts the discharge speed of the polyacrylamide silo 1 by adjusting the opening. The level sensor uses an ultrasonic level sensor to detect the remaining amount of polyacrylamide in the polyacrylamide silo 1. When the remaining amount falls below the set amount, the PLC controller prompts through an alarm.

[0037] The screw feeder 2 is driven by a frequency converter, which is connected to a PLC controller. The PLC controller controls the speed of the screw feeder 2 to adjust the speed of supplying polyacrylamide. The polyacrylamide silo 1 and the screw feeder 2 cooperate to supply polyacrylamide at a constant speed. Because polyacrylamide easily agglomerates at the connection between the screw feeder 2 and the polyacrylamide silo 1, the present application provides a first vibration motor 21 at the connection between the screw feeder 2 and the polyacrylamide silo 1. The drive circuit of the first vibration motor 21 is electrically connected to the PLC controller, and the first vibration motor 21 vibrates to break up the agglomerates.

[0038] The aeration pre-dissolution mechanism 3 includes: an aeration tank 31 provided below the discharge port of the screw feeder 2, the aeration tank 31 being connected to a discharge pipe 33, the discharge pipe 33 being provided with a discharge regulating valve 32, the aeration tank 31 being connected to a water inlet pipe 34, the water inlet pipe 34 being provided with a first flow metering regulating mechanism 35, an aeration nozzle 36 being provided in the aeration tank 31, the aeration nozzle 36 being connected to an air compressor 37 via an aeration pipeline. Figure 3 As shown, the aeration nozzle 36 comprises a nozzle 361 with an expanded opening, connected to the aeration pipeline. A core 362 is located within the nozzle 361. The core 362 is a combination of a cylinder and a cone. Four gas deflectors 363 are located at the conical end of the core 362. These deflectors 363 comprise a straight section at the conical tip and a spiral section at the blunt end. The cylindrical section of the core 362 is formed with an array of rotating airflow cutting teeth 364. Gas from the aeration pipeline is guided by the gas deflectors 363 and spirals into the array of airflow cutting teeth 364 between the nozzle 361 and the core 362, where it is effectively cut to form bubbles and achieve aeration. Aeration breaks up the swollen polyacrylamide blocks that fall from the screw feeder 2 into the aeration tank 31, allowing for sufficient infiltration of the polyacrylamide powder.

[0039] The soaked polyacrylamide is discharged through the discharge pipe 33 and the discharge regulating valve 32 for further dissolution.

[0040] Example 2

[0041] like Figure 1 As shown, an embodiment of the present invention provides a polyacrylamide proportioning device, which uses the aeration and dissolution device of polyacrylamide, including: a material tank 4 provided with the aeration and dissolution device of polyacrylamide.

[0042] The chemical tank 4 is connected to the heat-insulating cache water tank 5 , and a second flow metering and regulating component 6 is provided on the pipeline between the heat-insulating cache water tank 5 and the chemical tank 4 , and the second flow metering and regulating component 6 is connected to the PLC controller.

[0043] During the specific implementation process, a temperature sensor 51 and a heater 52 are set in the thermal insulation cache water tank 5, and the temperature sensor 51 and the heater 52 are connected to the PLC controller. On the one hand, the thermal insulation cache water tank 5 provides water with a temperature between 5°C and 40°C, and on the other hand, the thermal insulation cache water tank 5 can provide a stable water flow. A first liquid level gauge 53 is set in the thermal insulation cache water tank 5, and the thermal insulation cache water tank 5 is connected to a water supply pipe equipped with an electric water supply valve 54. The driving circuits of the first liquid level gauge 53 and the electric water supply valve 54 are connected to the PLC controller. The thermal insulation cache water tank 5 supports automatic water supply.

[0044] A stirrer 7 is provided within the chemical tank 4; the stirrer 7 stirs and accelerates the dissolution of the polyacrylamide. A second liquid level gauge 44 is provided within the chemical tank 4, and the second liquid level gauge 44 is connected to a PLC controller. The PLC controller determines the liquid level in the chemical tank 4 based on the second liquid level gauge 44, and further controls the addition of water and polyacrylamide during the dissolution process based on the liquid level.

[0045] A viscometer 41 is provided at the discharge pipe of the chemical tank 4, and the viscometer 41 is electrically connected to a PLC controller. The PLC controller determines the dissolution of polyacrylamide based on the viscosity measured by the viscometer 41. The discharge pipe of the chemical tank 4 is connected to a discharge valve 42 and a discharge pump 43. The discharge pump 43 is connected to the maturation tank 8 via a pipeline. The discharge pipe of the maturation tank 8 is connected to an electric valve 81 and a delivery pump 82. The delivery pump 82 is connected to the storage tank 9 via a pipeline. The discharge pipe of the storage tank 9 is provided with a third flow metering and regulating mechanism 91, and the third flow metering and regulating mechanism 91 is electrically connected to the PLC controller. The PLC controller controls the third flow metering and regulating mechanism 91 to quantitatively supply the polyacrylamide solution in the storage tank 9 to the water treatment process. During the specific implementation process, in order to control the transfer of the solution between the chemical tank 4, the maturation tank 8 and the storage tank 9, a third liquid level gauge 83 is provided in the maturation tank 8, and a fourth liquid level gauge 92 is provided in the storage tank 9. The third liquid level gauge 83 and the fourth liquid level gauge 92 are electrically connected to the PLC controller. The PLC controller determines whether the storage tank 9 can continue to receive liquid from the maturation tank 8 based on the liquid level measured by the fourth liquid level gauge 92. The PLC controller determines whether the maturation tank 8 can continue to receive liquid from the chemical tank 4 based on the liquid level measured by the third liquid level gauge 83.

[0046] In the embodiments provided by the present invention, it should be understood that the disclosed structures can be implemented in other ways. For example, the structural embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, structure or unit, which can be electrical, mechanical or other forms.

[0047] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0048] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0049] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features claimed herein.

Claims

1. An aeration and dissolution device for polyacrylamide, characterized in that: include: A polyacrylamide silo (1) is provided, wherein the bottom of the polyacrylamide silo (1) is connected to a screw feeder (2), an aeration pre-dissolution mechanism (3) is provided below the discharge port of the screw feeder (2), wherein the aeration pre-dissolution mechanism (3) comprises: an aeration tank (31) provided below the discharge port of the screw feeder (2), the aeration tank (31) is connected to a discharge pipe (33), a discharge regulating valve (32) is provided on the discharge pipe (33), the aeration tank (31) is connected to a water inlet pipe (34), a first flow metering regulating mechanism (35) is provided on the water inlet pipe (34), an aeration nozzle (36) is provided in the aeration tank (31), and the aeration nozzle (36) is connected to an air compressor (37) via an aeration pipeline.

2. The aeration and dissolution device for polyacrylamide according to claim 1, characterized in that: A discharge valve (11) with an adjustable opening is provided at the bottom discharge port of the polyacrylamide silo (1), a material level sensor is provided in the polyacrylamide silo (1), a driving circuit of the discharge valve (11) and the material level sensor are electrically connected to a PLC controller, and the PLC controller is electrically connected to an alarm.

3. The aeration and dissolution device for polyacrylamide according to claim 1, characterized in that: A first vibration motor (21) is provided at the connection between the screw feeder (2) and the polyacrylamide silo (1).

4. The aeration and dissolution device for polyacrylamide according to claim 1, characterized in that: The aeration nozzle (36) includes: a nozzle (361) with an expansion port, a core (362) is arranged in the nozzle (361), the core (362) is a combination of a cylinder and a cone, four gas guide plates (363) are provided at the conical end of the core (362), the gas guide plates (363) include a straight section located at the tip of the cone and a spiral section located at the blunt end of the cone, and an array of airflow cutting teeth (364) are arranged in a rotating manner on the side wall of the cylindrical section of the core (362).

5. A polyacrylamide proportioning device, using the polyacrylamide aeration and dissolution device according to any one of claims 1 to 4, characterized in that: include: A material tank (4) is provided with an aeration and dissolution device for polyacrylamide; The chemical tank (4) is connected to the heat-insulating cache water tank (5), and a second flow metering and regulating component (6) is provided on the pipeline between the heat-insulating cache water tank (5) and the chemical tank (4), and the second flow metering and regulating component (6) is connected to a PLC controller; A stirrer (7) is provided in the material tank (4); A viscometer (41) is provided at the discharge pipe of the chemical tank (4), the discharge pipe of the chemical tank (4) is connected to a discharge valve (42) and a discharge pump (43), and a second liquid level meter (44) is provided in the chemical tank (4).

6. The polyacrylamide proportioning device according to claim 5, characterized in that: A temperature sensor (51) and a heater (52) are provided in the heat-insulating cache water tank (5), and the temperature sensor (51) and the heater (52) are connected to a PLC controller.

7. The polyacrylamide proportioning device according to claim 5, characterized in that: A first liquid level gauge (53) is provided in the heat-insulating cache water tank (5), the heat-insulating cache water tank (5) is connected to a water supply pipe provided with an electric water supply valve (54), and the driving circuits of the first liquid level gauge (53) and the electric water supply valve (54) are connected to a PLC controller.

8. The polyacrylamide proportioning device according to claim 5, characterized in that: The discharge pump (43) is connected to the maturation tank (8) through a pipeline. The discharge pipe of the maturation tank (8) is connected to an electric valve (81) and a delivery pump (82). The delivery pump (82) is connected to the storage tank (9) through a pipeline. The discharge pipe of the storage tank (9) is provided with a third flow metering and regulating mechanism (91). A third liquid level gauge (83) is provided in the maturation tank (8), and a fourth liquid level gauge (92) is provided in the storage tank (9).

Images