KR101209520B1 - Rapid dissolving system for liquid polyer - Google Patents

Abstract

PURPOSE: A rapidity liquid polymer dissolving device is provided to easily dissolve the liquid polymer into diluted solution through first and second agitation. CONSTITUTION: A rapidity liquid polymer dissolving device comprises a dissolving tank main body(10), an undiluted liquid polymer tank(20), a first rapid dissolving machine(30), a stirrer(40), a level switch(50), a guide tube(60), and a dissolved polymer feeding pump(70). The liquid polymer undiluted solution tank includes a liquid polymer injection supply pump(21). The first rapid dissolving machine primary rapid agitates and mixes the liquid polymer undiluted solution with diluted solution and supplies the liquid polymer solution to the dissolving tank main body. The mixer is installed inside the dissolving tank main body and includes a stirrer shaft(41) and rotary motor(42). The stirrer shaft has agitating blades(41a) which secondary agitating and mixing the liquid polymer solution.

Description

Rapid Liquid Polymer Dissolving Device {RAPID DISSOLVING SYSTEM FOR LIQUID POLYER}

The present invention relates to a rapid liquid polymer dissolving device, and more particularly, to a rapid liquid polymer dissolving device which can rapidly dissolve and supply a liquid polymer for sludge flocculation.

In order to dewater and concentrate the sludge in the dehydrator or concentrator, the coagulation process is carried out using chemicals such as polymers, which are mostly flocculants.

These polymers are to use a solid phase and a liquid phase, in the case of a solid phase it is used to prepare a suspension. At this time, when the solid polymer is in contact with water, the adhesiveness increases to form agglomerates by agglomeration with each other. The agglomerate is gradually melted by contact with water, but the inside is blocked with water, so the dissolution by water proceeds very slowly. The disadvantage is that it takes a long time to make the suspension of the desired concentration.

In order to compensate for this disadvantage, a liquid polymer is often used in combination with dilution water. As an example of using a liquid polymer, Korean Patent No. 10-0843348 has been disclosed.

In the liquid polymer dissolving apparatus disclosed in Korean Patent No. 10-0843348, as shown in FIG. 1, a space for receiving and storing a liquid polymer stock solution (polymer storage tank 112), by mixing a liquid polymer and water, It is divided into a space for storing the dissolved dilution water to mature for a certain time (polymer dissolution aging tank 114), a space for collecting and preparing a predetermined amount to discharge the aged dilution water (water extraction preparation tank 116) A divided polymer tank 10; A polymer stock solution supplying pump pumping the polymer stock solution of the polymer storage tank 112 and feeding the polymer stock solution to the polymer dissolution aging tank 114 and mixing the mixture with water before being introduced into the polymer dissolution aging tank 114; A water supply line supplying water for mixing before adding the liquid polymer stock solution; Stirring means installed on the polymer dissolving aging tank and the water discharge preparation tank, respectively, to increase the dissolution rate by inducing continuous flow of the dilution water without stagnation; A water level sensor 129 installed on the water extraction preparation tank and detecting a water extraction level of each step of the dilution water; And a control unit which receives the detection signal of the water level sensor 129 and controls the polymer stock solution supply line, the water supply line, and the stirring means.

The liquid polymer dissolving device is provided with the polymer storage tank 112, the polymer dissolving aging tank 114, and the water discharge preparation tank 116, respectively, in order to improve the dissolution rate of the liquid polymer. There is a disadvantage in that the 110 is large.

In addition, the liquid polymer dissolving apparatus includes a shielding wall 113 for partitioning the polymer reservoir 112, the polymer dissolution aging tank 114, and the water discharge preparation tank 116, and the polymer dissolution aging tank 114 and the water discharge. It is partitioned between the preparatory tank 116 and includes a double partition wall (115) so as to be overflowed to the water extraction preparation tank 116 by the level of the dilution water of the polymer dissolution aging tank 114 of the polymer tank 110 There is a complicated structure.

In addition, in order to induce a continuous flow of the dilution water without stagnation and to increase the dissolution rate, the rotational force of the motor 126 and the rotary shaft 127 is axially coupled to the motor and the stirring blade installed at the lower end of the rotary shaft 127 Since the stirring means (128) is provided with the polymer dissolution aging tank 114 and the water extraction preparation tank 116, respectively, there is a problem that the apparatus is enlarged and expensive.

Korean Patent Registration No. 10-0843348 (Registration Date: 2008.06.26) Korean Patent Registration No. 10-0761508 (Registration Date: September 18, 2007) Korean Patent Registration No. 10-1023986 (Registration Date: 2011.03.15.)

The present invention has been made to solve the above problems, an object of the present invention is to simplify the structure, to easily dissolve the liquid polymer in dilution water, and to not only downsize the size of the dissolution tank but also several tanks It is to provide a rapid liquid polymer dissolving device that can increase the processing capacity of the polymer solution without using a to supply the dissolved polymer continuously.

In addition, another object of the present invention is to provide a rapid liquid polymer dissolving device to maintain a constant concentration of the liquid polymer solution.

Rapid liquid polymer dissolution device of the present invention for achieving the above object, the dissolution tank body (10); A liquid polymer supply tank 20 having a liquid polymer supply pump 21 for supplying a liquid polymer stock solution in a quantitative manner; First rapid dissolving to mix the liquid polymer stock solution supplied from the liquid polymer supply tank 20 and the dilution water to dilute it first to rapidly supply the liquid polymer solution to the dissolution tank body (10) 30; It is installed inside the upper center of the dissolution tank body 10, is provided at the lower end and pivoting the liquid polymer dissolved liquid supplied to the dissolution tank body 10 by the primary rapid dissolver 30 to 2 Agitator 40 having a stirrer shaft 41 having a stirring blade 41a for mixing agitation and a rotating motor 42 for rotating the stirrer shaft 41; A level switch 50 installed at an upper portion of the dissolution tank main body 10 and installed at the dissolution tank main body 10 so as to detect the highest level, the middle level, and the lowest level of the dissolution tank main body 10; A tube (60) having an upper and lower portions wrapped around the outer side of the stirring blade (41a) so as to easily pivot up the liquid polymer mixed solution by the stirring blade (41a); A dissolving polymer supply pump 70 connected to a lower portion of the dissolving tank main body 10 and supplying a liquid polymer dissolving solution mixed in the dissolving tank main body 10 to the outside of the dissolving tank main body 10; And a control unit.

At this time, the primary rapid dissolving device 30 is vertically installed vertically, the dilution water supply unit for supplying the liquid polymer stock solution supply part 31a for supplying the liquid polymer stock solution to the lower one side and the dilution water for diluting the liquid polymer stock solution A main dissolving unit 31b includes a primary dissolving liquid discharging unit 31c configured to discharge the liquid polymer primary mixed liquid mixed with the liquid polymer stock solution and the dilution water to the dissolution tank main body 10 at one upper portion thereof. (31); It is installed up and down in the quick dissolver body 31 vertically and dissolved and mixed by stirring and mixing the liquid polymer stock solution supplied from the liquid polymer stock solution supply part 31a and the dilution water supplied from the dilution water supply part 31b. A stirring screw (32) having a feed wing (32a) for transferring a liquid polymer primary dissolution mixture to an upper portion of the dissolver body (31); A screw rotating motor 33 for rotating the stirring screw 32; Characterized in that consists of.

In addition, the upper end of the tube 60 is characterized in that the same as the level of the level switch 50 is installed in the middle of the dissolution tank body 10.

In addition, the dilution water supply unit 31b is further provided with a pressure control valve 34 for supplying the dilution water at a constant pressure and a solenoid valve 35 for controlling the supply of the dilution water supplied at a constant pressure state. It is done.

In addition, the solenoid valve 35 is opened at an intermediate level of the level switch 50 provided in the dissolution tank main body 10, and at the highest level of the level switch 50 of the dissolution tank main body 10. The liquid polymer supply pump 21 is closed between the intermediate level and the highest level of the level switch 50 installed in the dissolution tank main body 10. The liquid polymer is set so that the dilution water can be supplied at the supply time, and operates at the intermediate water level and stops at the highest water level as the dilution water.

The dissolving polymer supply pump 70 is operated only by the use of the dissolving polymer using apparatus irrespective of the level of the level switch 50 installed in the dissolving tank main body 10.

In addition, the liquid polymer supply pump 21 is provided with a timer for supplying the liquid polymer stock solution to the rapid dissolver body 31 in the same manner as the opening and closing time of the solenoid valve 35 provided in the dilution water supply part 31b. It is characterized by.

In addition, the level switch is characterized in that the electrode.

The present invention by the above configuration is simple in structure, inexpensive, and can easily dissolve the liquid polymer through the first and second stirring in the dilution water to improve the dissolution rate, and the united dissolution tank It is possible to reduce the size of the dissolution tank by not using a multi-step dissolution tank. In addition, since the liquid polymer is rapidly dissolved in dilution water, there is an effect of increasing the dissolution treatment capacity of the polymer solution.

In addition, when the dissolution tank level reaches the middle level while continuously using the dissolving polymer, the dissolution polymer supply system is maintained while maintaining the concentration of the liquid polymer by repeating the operation of supplying the dissolving polymer to the highest level through the rapid dissolution tank. It has the effect of automating miniaturization.

1 is a view showing a conventional liquid polymer dissolving device.
2 is a view showing a rapid liquid polymer dissolving device of the present invention.
Figure 3 shows the automation of the rapid liquid polymer dissolution device of the present invention.

Hereinafter, the rapid liquid polymer dissolving device of the present invention will be described in detail with reference to the drawings.

2 is a view showing a rapid liquid polymer dissolving device according to the present invention.

Rapid liquid polymer dissolving device according to the present invention, as shown in Figure 2, the dissolution tank body (10); Liquid polymer storage tank 20 for supplying the liquid polymer stock solution; A primary rapid dissolving device (30) for stirring and mixing the supplied liquid polymer stock solution and dilution water to supply the liquid polymer mixture solution to the dissolution tank body (10); A stirrer 40 for pivoting and dissolving the liquid polymer dissolving solution supplied to the dissolution tank main body 10 by the primary rapid dissolving device 30 upwardly; A level switch for sensing the level of the dissolution tank main body 10 and operating or stopping the dilution water and the liquid polymer supply pump 21 by detecting the intermediate level and the highest level of the dissolution tank main body 10 ( 50); A guide tube 60 surrounding the outside of the stirring blade 41a for improving the stirring ability of the dissolution tank and having an upper and lower portion open; Dissolving polymer supply pump 70 for supplying a dissolving polymer to the dissolved polymer main body 10 external dissolving polymer using the well dissolved liquid polymer solution; It is made, including.

The dissolution tank body 10 has the level switch 50 is installed on one side of the upper side, the stirrer 40 is installed inside the upper center, the first rapid dissolver 30 is installed on the other side of the upper side The dissolving polymer supply pump 70 for supplying the liquid polymer dissolving liquid dissolved in the dissolving tank body 10 to the dissolving polymer using place of the dissolving tank body 10 is installed at the side surface.

The liquid polymer stock tank 20 serves to store the liquid polymer stock solution. The polymer injection pump 21 supplies the polymer stock solution to the rapid dissolver 30 so as to maintain a constant concentration in the amount of dilution water supplied to the rapid dissolver 30.

The first rapid dissolver (30) is a mixture of the liquid polymer stock solution supplied from the liquid polymer stock solution tank 20 and dilution water to dilute the first rapid stirring and mixing the liquid polymer mixed solution to the dissolution tank body (10) It serves to supply.

The first rapid dissolver 30 is installed vertically long, the rapid dissolver is hollow is formed inside, the rapid dissolving unit provided with a dilution water supply port 31b, rapid dissolving liquid discharge portion 31c Body 31; A polymer stock solution supply part 31a for injecting a polymer into one side of the dilution water supply port 31b; A mixing and agitating unit which is installed in the hollow of the main body 31, and includes a rotating shaft 32, a wing unit 33, and a rotating motor 34; It consists of, the wing portion is composed of a plurality of rapid stirring blades (33a) for the purpose of rapid stirring, a countercurrent wing (33b) to enhance the vortex, and a transfer blade (33c) combines and transfers, rapid The stirring blades 33a are regularly spaced apart in the axial direction of the rotary shaft 32 and one wing and the adjacent blades are spirally arranged in the same direction as the rotational direction of the rotary shaft 32, and the circle is divided into 3 to 4 equal parts. Arranged at an isometric angle, the countercurrent wing 33b is arranged to have a wing twist angle in the reverse direction on the same circumference of the portion where the rapid stirring wing 33a ends, and the feed wing 33c is arranged in the same spiral as the rotational direction. And dissolve the polymer rapidly in the diluent.

The liquid polymer stock solution supply part 31a is installed at one side of the dilution water supply part 31b of the rapid dissolving body 31 and serves to supply the liquid polymer stock solution.

The dilution water supply part 31b serves to supply dilution water for diluting the liquid polymer stock solution. At this time, the dilution water supply unit 31b preferably supplies dilution water at a constant pressure. To this end, the dilution water supply unit 31b is preferably provided with a pressure control valve 34 to supply the dilution water at a predetermined pressure. As such, when the dilution water is supplied at a constant pressure, the input amount of the dilution water becomes constant, so that the mixing concentration of the dilution water and the liquid polymer stock solution introduced into the dissolution tank main body 10 can be easily adjusted.

In addition, the dilution water supply unit 31b is further provided with a solenoid valve 35 for controlling the supply of the dilution water supplied at a constant pressure state by the pressure control valve 34.

The primary mixed solution discharging unit 31c serves to discharge the liquid polymer primary dissolving solution in which the liquid polymer raw solution is rapidly dissolved in dilution water on the upper side into the dissolution tank body 10.

The liquid polymer injection pump 21 is controlled so as to be supplied at the same time as the dilution water supply by adjusting the injection amount in advance so as to have a certain concentration in the dilution water supply amount so that the solution always has a constant concentration.

As described above, the present invention includes the rapid dissolving device 30 so that the liquid polymer primary dissolving solution is dissolved by first stirring and mixing the liquid polymer stock solution and the dilution water to the upper portion of the rapid dissolving body 31. By supplying to the dissolution tank body 10 to ensure that the water level of the dissolving polymer dissolution tank 10 is always maintained above the intermediate level.

The stirrer 40 is installed inward from the upper center of the dissolution tank body 10, the stirrer shaft 41 and the stirring motor 42 is provided.

The stirrer shaft 41 is provided at the lower end of the intermediate water level, and rotates upwardly the liquid polymer solution supplied to the dissolution tank body 10 by the first rapid dissolver 30 to stir the mixing blade for the second stirring and mixing. 41a is provided.

The stirring motor 42 serves to rotate the stirrer shaft 41.

The level switch 50 is installed on the upper part of the dissolution tank main body 10, the dissolution tank main body 10 is installed in half the highest level, the lowest level, and the highest level of the dissolution tank main body 10 Detect the medium water level (H, M, L). In addition, the level switch 50 is such that the water level of the dissolution tank body 10 is operated between the lime water solenoid valve 35b and the liquid polymer injection pump 21 between the intermediate water level M and the full water level H. When the water level of the dissolution tank 10 reaches the middle water level (M), the lime water solenoid valve 35b is opened and the liquid polymer injection pump 21 is operated to supply the lime water and the polymer stock solution, and the highest water level (H) is reached. When the operation is stopped, and always maintains the water level of the dissolution tank 10 above the intermediate level (M) serves to stably supply the polymer dissolving liquid of a certain concentration through the dissolving polymer supply pump (70).

In addition, the level switch 50 opens or closes the solenoid valve 35 between the middle water level M and the highest water level H of the melting tank main body 10, and the upper polymer injection pump 21. To stop the operation.

In addition, the level switch is preferably made of an electrode.

The guide tube 60 surrounds the outside of the stirring blade 41a so as to easily pivot up the liquid polymer mixture by the stirring blade 41a in order to improve the stirring force of the dissolution tank, and the upper and lower portions thereof are opened. The guide tube 60 is wrapped around the outside of the stirring blade (41a) when the stirring blade (41a) is rotated to transfer the liquid polymer mixed solution upwards, the liquid polymer mixed liquid inside and outside the tube (60) It is cycled as shown. By providing the tube 60 as described above, the liquid polymer dissolving solution is circulated smoothly up and down, and thus the secondary stirring and mixing of the liquid polymer dissolving solution is promoted.

At this time, the upper end of the guide tube 60 is preferably searched slightly lower than the middle portion of the dissolution tank body (10). The reason for this is because the level switch 50 supplements the dilution water and the polymer stock solution between the middle water level M and the highest water level H, so that the dissolved tank body 10 is filled. This is to promote secondary stirring and mixing of the liquid polymer mixed liquid by promoting circulation of the liquid polymer mixed liquid at the intermediate level (M) and below.

The dissolving polymer supply pump 70 is connected to the lower portion of the dissolving tank main body 10 and supplies a liquid polymer dissolving solution mixed in the dissolving tank main body 10 to the outside of the dissolving tank main body 10. Do it.

In another embodiment, a flow meter is installed in the dilution water pipe instead of the pressure control valve 35a, and a liquid polymer injection pump 21 is installed to replace the flow rate control so that a certain ratio of polymer is introduced into the dilution water in the control panel. Another step is to have an automated system that automatically regulates lime water and polymer stock.

The technical spirit should not be interpreted as being limited to the above embodiments of the present invention. Various modifications may be made at the level of those skilled in the art without departing from the spirit of the invention as claimed in the claims. Therefore, such improvements and modifications fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

10: dissolution tank body 21: liquid polymer injection pump
20: liquid polymer stock tank 30: first rapid melting
31: rapid melting body 31a: liquid polymer stock solution supply portion
31b: dilution water supply part 31c: primary melt solution discharge part
32: mixing stirrer shaft 33a: quick stirring blade
32b: countercurrent wing 32c: feed wing
33: Mixing stirrer motor 35a: Pressure regulating valve
35b: solenoid valve 40: stirrer
41a: stirring blade 41: stirrer shaft
42: stirring motor 50: level switch
60: guide tube 70: melt polymer supply pump

Claims (8)

Melting tank body 10;
A liquid polymer stock tank (20) having a liquid polymer injection supply pump (21) for supplying a liquid polymer stock solution in a quantitative manner;
Primary rapid dissolving to mix the liquid polymer stock solution supplied from the liquid polymer supply tank 20 and the dilution water to dilute it to the first to stir the liquid polymer solution to the dissolution tank body 10 ( 30);
It is installed inside the upper center of the dissolution tank main body 10, is provided at the lower end and the secondary stirring by pivoting the liquid polymer mixture solution supplied to the dissolution tank main body 10 by the primary dissolver 30 An agitator shaft (40) provided with a mixing agitator blade (41a) and a rotating motor (42) for rotating the agitator shaft (41);
Is installed on the upper portion of the dissolution tank body 10, the level switch 50 is installed on the upper portion, the middle portion and the lower portion of the dissolution tank body 10, respectively, to detect the water level of the dissolution tank body 10 ;
A guide tube 60 surrounding the outside of the stirring blade 41a so as to easily pivot upward of the liquid polymer mixed solution by the stirring blade 41a and having an upper and lower portions open;
A dissolving polymer supply pump (70) connected to a lower portion of the dissolving tank body (10) and supplying a liquid polymer mixed solution stirred and mixed in the dissolving tank body (10) to the outside of the dissolving tank body (10);
Rapid liquid polymer dissolving apparatus comprising a.
The method of claim 1,
In the operation of the polymer dissolving device, the primary polymer dissolution liquid is supplied to the dissolution tank through the first rapid dissolving device 30 at the intermediate level of the dissolution tank, and the dissolution liquid supply is blocked at the highest level, and dissolves regardless of the amount of dissolution liquid used. A rapid liquid polymer dissolving device capable of continuously supplying a stable dissolving polymer of a constant concentration by maintaining a tank level above the medium level.
The method of claim 1, wherein the primary rapid dissolver 30,
It is installed up and down long, the liquid polymer stock solution supply part 31a for supplying the liquid polymer stock solution on the lower side and the dilution water supply section 31b for supplying dilution water for diluting the liquid polymer stock solution, the liquid on the upper side A dissolver body 31 having a primary mixed solution discharge part 31c for discharging the liquid polymer primary dissolved solution mixed with the polymer stock solution and the dilution water into the dissolution tank main body 10;
The liquid phase is installed up and down in the dissolver body 31 and is dissolved by rapid stirring and mixing the liquid polymer stock solution supplied from the liquid polymer stock solution supply part 31a and the dilution water supplied from the dilution water supply part 31b. A stirring screw (32) provided with a stirring blade (33a), a countercurrent wing (33b), a transfer blade (33c) for transferring the polymer primary melt to the upper portion of the dissolver body (31);
Screw rotation motor 33 for rotating the stirring screw 32;
Rapid liquid polymer dissolving device, characterized in that consisting of.
The method of claim 2,
The upper end of the tube 60 is a rapid liquid polymer dissolving apparatus, characterized in that installed below the middle portion of the dissolution tank body (10).
The method of claim 3, wherein
The dilution water supply unit 31b is further provided with a pressure control valve 34 for supplying the dilution water at a constant pressure and a solenoid valve 35 for controlling the supply of the dilution water supplied at a constant pressure. Rapid Liquid Polymer Dissolution Apparatus.
The method of claim 4, wherein
The solenoid valve 35 for supplying the dilution water is opened at an intermediate level of the level switch 50 installed in the dissolution tank main body 10, and closed at the highest level of the dissolution tank main body 10.
The liquid polymer injection pump 21 is operated at an intermediate level of the level switch 50 installed in the dissolution tank main body 10, and is a rapid liquid polymer, characterized in that stopped at the highest level of the dissolution tank main body 10. Melter.
The method of claim 5, wherein
The liquid polymer injection pump 21 adjusts the injection ratio in advance and supplies the polymer stock solution to the polymer rapid dissolver 30 in the same manner as the opening and closing time of the solenoid valve 35 provided in the dilution water supply part 31b. Rapid liquid polymer dissolving apparatus characterized in that the control panel is provided.
The method according to claim 6,
The liquid polymer injection pump 21 is provided with a flow meter in place of the pressure control valve of the dilution water in adjusting the injection ratio, characterized in that it automatically adjusts the injection amount of the liquid polymer injection pump 21 in conjunction with the flow rate of the dilution water Rapid liquid polymer dissolving device.

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