Medicine dissolving equipment and medicine dissolving control method

Abstract

The invention discloses medicine dissolving equipment and a medicine dissolving control method.The medicine dissolving equipment comprises a box body, a first partition plate and a second partition plate are sequentially arranged in the box body at intervals in the length direction of the box body, and the first partition plate and the second partition plate divide the interior of the box body into a first medicine dissolving cavity, a second medicine dissolving cavity and a third medicine dissolving cavity; the volumes of the first medicine dissolving chamber and the second medicine dissolving chamber are the same and are smaller than the volume of the third medicine dissolving chamber; a first circulation opening is formed in the top of the first partition plate; a second circulation opening is formed in the top of the second partition plate; an inlet is formed in the top of the box body corresponding to the first medicine dissolving chamber; an outlet is formed in the bottom of the box body corresponding to the second medicine dissolving chamber; stirrers are arranged in the first medicine dissolving chamber, the second medicine dissolving chamber and the third medicine dissolving chamber, and are connected with stirring driving mechanisms; and the target rotating speeds of the stirrers of the first medicine dissolving chamber, the second medicine dissolving chamber and the third medicine dissolving chamber are gradually reduced step by step. The medicine dissolving device can ensure that the medicine in the third medicine dissolving chamber meets the use requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a drug dissolving device and a drug dissolving control method. Background Art

[0002] In the existing sewage purification process, a flocculant PAM (polyacrylamide) is often added to the sewage to agglomerate and flocculate the impurities in the sewage. However, since the flocculant PAM is in powder form, the flocculant PAM needs to be stirred and dissolved when used to reach a predetermined concentration.

[0003] At present, the commonly used PAM dissolving system is divided into three levels of dissolving areas, and the volume and stirring speed of each dissolving area are the same, and the stirring speed is relatively low. However, in actual applications, because the stirring speed of each dissolving area is low, the overall dissolution residence time is long; relative to the stirring speed, the volume of the first and second dissolving areas is relatively large, and when the solid powder is continuously added, the stirring is not thorough, the agent is easy to agglomerate, and it is difficult to achieve complete dissolution, and the designed dissolving concentration cannot be reached, which reduces the PAM flocculation effect. Therefore, in sewage treatment projects, the flocculation effect is often achieved by increasing the dosage, but the amount of sludge is increased, resulting in an increase in the cost of the agent and the cost of sludge disposal. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes a drug dissolving device and a drug dissolving control method.

[0005] The drug dissolving device proposed by the present invention comprises: a box body, three stirrers and three stirring driving mechanisms;

[0006] The box body is provided with a first partition and a second partition arranged in sequence along the length direction thereof, the first partition and the second partition divide the inside of the box body into a first drug dissolving chamber, a second drug dissolving chamber and a third drug dissolving chamber arranged in sequence along the length direction thereof, the volume of the first drug dissolving chamber is the same as the volume of the second drug dissolving chamber, and the volume of the third drug dissolving chamber is greater than the volume of the first drug dissolving chamber;

[0007] The top of the first partition is provided with a first flow port for connecting the first drug dissolving chamber and the second drug dissolving chamber, and the top of the second partition is provided with a second flow port for connecting the second drug dissolving chamber and the third drug dissolving chamber;

[0008] An inlet is provided at the top of the box body corresponding to the first drug dissolving chamber, and a first valve is provided in the inlet; an outlet is provided at the bottom of the box body corresponding to the second drug dissolving chamber, and a second valve is provided in the outlet.

[0009] The three agitators are vertically arranged in the first drug dissolution chamber, the second drug dissolution chamber and the third drug dissolution chamber, respectively, and the top ends of the shafts of the three agitators extend out of the top walls of the drug dissolution chambers and are connected to the three stirring driving mechanisms one by one. The stirring driving mechanisms are used to drive the corresponding agitators to rotate, and the target rotation speeds of the agitators in the first drug dissolution chamber, the second drug dissolution chamber and the third drug dissolution chamber decrease step by step.

[0010] Preferably, the volume of the third drug dissolution chamber is 3 to 5 times the volume of the first drug dissolution chamber.

[0011] Preferably, the target speed of the agitator in the first drug dissolution chamber is 2 to 4 times the target speed of the agitator in the third drug dissolution chamber, and the target speed of the agitator in the first drug dissolution chamber is 1.5 to 2 times the target speed of the agitator in the second drug dissolution chamber.

[0012] Preferably, a third partition is provided between the agitator and the first partition in the first drug dissolving chamber, the third partition separates the first drug dissolving chamber into an independent first stirring zone and a first anti-cross-flow partition, and a third flow port for connecting the first stirring zone and the first anti-cross-flow partition is provided at the bottom of the third partition;

[0013] A fourth partition is arranged between the agitator located in the second drug dissolution chamber and the first partition, and the fourth partition divides the second drug dissolution chamber into an independent second stirring zone and a second anti-cross-flow partition zone, and a fourth flow port for connecting the second stirring zone and the second anti-cross-flow partition zone is opened at the bottom of the fourth partition.

[0014] Preferably, the volume of the first anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the first drug dissolution chamber;

[0015] The volume of the second anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the second drug dissolution chamber.

[0016] Preferably, a liquid level sensor is provided in the third drug dissolving chamber.

[0017] Preferably, it also includes an automatic water replenishment mechanism and an automatic medication administration mechanism, and the automatic water replenishment mechanism and the automatic medication administration mechanism are respectively connected to the inlet.

[0018] Preferably, a controller is also included, and the liquid level sensor, the first valve, the second valve, three stirring drive mechanisms, the automatic water replenishment mechanism and the automatic drug administration mechanism are electrically connected to the controller respectively.

[0019] Preferably, the controller is used to control the first valve to open and the second valve to close according to a preset program or an external instruction, and to start the three stirring drive mechanisms at the same time;

[0020] The controller is also used to determine the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and control the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time;

[0021] Among them, the controller obtains the liquid level of the third drug dissolving chamber in real time through the liquid level sensor; when the liquid level of the third drug dissolving chamber reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber to stop working; when the time for the stirring drive mechanism of the first drug dissolving chamber to stop working reaches a second preset time, the controller controls the stirring drive mechanism of the second drug dissolving chamber to stop working;

[0022] The controller is also used to control the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward;

[0023] In the process of discharging the medicine liquid, the controller is also used to obtain the liquid level of the third medicine dissolving chamber in real time through the liquid level sensor; whenever the liquid level of the third medicine dissolving chamber drops to the second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanism of the first medicine dissolving chamber and the second medicine dissolving chamber, and controls the automatic water replenishment mechanism and the automatic dosing mechanism to start at the same time; wherein the second preset liquid level is lower than the first preset liquid level;

[0024] When the liquid level in the third drug dissolution chamber reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug administration mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolution chamber to stop working; when the time for the stirring drive mechanism in the first drug dissolution chamber to stop working reaches a second preset time, the controller controls the stirring drive mechanism of the second drug dissolution chamber to stop working.

[0025] In a second aspect, the present invention further provides a control method for a drug dissolving device, which is applied to the drug dissolving device in the first aspect;

[0026] The control method comprises: a controller controls the first valve to open and the second valve to close according to a preset program or an external instruction, and simultaneously starts three stirring drive mechanisms;

[0027] The controller determines the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and controls the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time;

[0028] The controller obtains the liquid level of the third drug dissolving chamber in real time through the liquid level sensor;

[0029] When the liquid level of the third drug dissolving chamber reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve;

[0030] When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber to stop working;

[0031] When the time for the stirring driving mechanism of the first drug dissolving chamber to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber to stop working;

[0032] The controller controls the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward;

[0033] During the process of discharging the drug solution, the controller obtains the liquid level of the third drug dissolving chamber in real time through the liquid level sensor;

[0034] Whenever the liquid level of the third drug dissolving chamber drops to the second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanism of the first drug dissolving chamber and the second drug dissolving chamber, and controls the automatic water replenishment mechanism and the automatic drug dosing mechanism to start at the same time; wherein the second preset liquid level is lower than the first preset liquid level;

[0035] When the liquid level of the third drug dissolving chamber reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve;

[0036] When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber to stop working;

[0037] When the time for the stirring driving mechanism of the first drug dissolving chamber to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber to stop working.

[0038] In the present invention, the proposed drug dissolution equipment and drug dissolution control method no longer adopt a design of uniform volume, but adopt a design of simultaneously reducing the volume of the first drug dissolution chamber and the second drug dissolution chamber and relatively enlarging the third drug dissolution chamber. Moreover, the volume of the first drug dissolution chamber is the same as that of the second drug dissolution chamber, and the volume of the third drug dissolution chamber is larger than that of the first drug dissolution chamber, thereby avoiding the problems of too high solubility and easy molecular structure breakup caused by the excessive volume of the second drug dissolution chamber, and also avoiding the insufficient solubility caused by the excessively small volume of the second drug dissolution chamber, and ensuring that the powder in the first drug dissolution chamber is in a semi-dissolved state and the powder in the second drug dissolution chamber is fully dissolved. At the same time, by setting the target speed of the agitator of the first drug dissolution chamber, the second drug dissolution chamber and the third drug dissolution chamber to be gradually reduced, it is possible to stir at a high speed when the particles are not yet melted, stir at a higher speed when the particles are semi-dissolved, and stir at a low speed when the particles are completely melted, effectively ensuring that the dissolved medicine meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of a drug dissolving device in one embodiment of the present invention. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Reference Figure 1 The present invention provides a drug dissolving device, comprising: a box 1, three stirrers 4 and three stirring drive mechanisms 5;

[0042] The box body 1 is provided with a first partition 2 and a second partition 3 which are arranged in sequence along the length direction thereof. The first partition 2 and the second partition 3 divide the inside of the box body 1 into a first drug dissolving chamber 11, a second drug dissolving chamber 12 and a third drug dissolving chamber 13 which are arranged in sequence along the length direction thereof. The volume of the first drug dissolving chamber 11 is the same as that of the second drug dissolving chamber 12, and the volume of the third drug dissolving chamber 13 is greater than that of the first drug dissolving chamber 11.

[0043] The top of the first partition plate 2 is provided with a first flow port for connecting the first drug dissolving chamber 11 and the second drug dissolving chamber 12, and the top of the second partition plate 3 is provided with a second flow port for connecting the second drug dissolving chamber 12 and the third drug dissolving chamber 13;

[0044] An inlet is provided at the top of the box body 1 corresponding to the first drug dissolving chamber 11, and a first valve is provided in the inlet; an outlet is provided at the bottom of the box body 1 corresponding to the second drug dissolving chamber 12, and a second valve is provided in the outlet.

[0045] The three agitators 4 are respectively arranged vertically in the first drug dissolution chamber 11, the second drug dissolution chamber 12 and the third drug dissolution chamber 13, and the top ends of the shafts of the three agitators 4 extend out of the top walls of the drug dissolution chambers and are driven and connected to the three stirring driving mechanisms 5 in a one-to-one correspondence. The stirring driving mechanisms are used to drive the corresponding agitators 4 to rotate, and the target rotation speeds of the agitators 4 in the first drug dissolution chamber 11, the second drug dissolution chamber 12 and the third drug dissolution chamber 13 decrease step by step.

[0046] Compared with the drug dissolving equipment with three-level drug dissolving areas in the prior art, the present invention no longer adopts a design of uniform volume, but adopts a design of simultaneously reducing the volume of the first drug dissolving chamber 11 and the second drug dissolving chamber 12 and relatively enlarging the third drug dissolving chamber 13. Moreover, the volume of the first drug dissolving chamber 11 is the same as the volume of the second drug dissolving chamber 12, and the volume of the third drug dissolving chamber 13 is larger than the volume of the first drug dissolving chamber 11, thereby avoiding the problems of excessive solubility and easy molecular structure breakup caused by the excessive volume of the second drug dissolving chamber 1212, and also avoiding the problem of excessive solubility and easy molecular structure breakup caused by the excessive volume of the third drug dissolving chamber 13. The insufficient solubility caused by the small volume of the second drug-dissolving chamber 12 can ensure that the powder in the first drug-dissolving chamber 11 is in a semi-dissolved state and the powder in the second drug-dissolving chamber 12 is fully dissolved; at the same time, by setting the target speed of the agitator 4 of the first drug-dissolving chamber 11, the second drug-dissolving chamber 12 and the third drug-dissolving chamber 13 to be gradually reduced, it is possible to stir at a high speed when the particles are in an unmelted state, stir at a higher speed when the particles are semi-dissolved, and stir at a low speed when the particles are completely melted, effectively ensuring that the dissolved medicine meets the usage requirements.

[0047] Specifically, the three stirring driving mechanisms 5 are respectively installed on the outside of the top walls of the first drug dissolution chamber 11 , the second drug dissolution chamber 12 , and the third drug dissolution chamber 13 .

[0048] In order to further ensure that the powder in the first drug dissolving chamber 11 is in a semi-dissolved state and the powder in the second drug dissolving chamber 12 is fully dissolved, in this embodiment, the volume of the third drug dissolving chamber 13 is 3 to 5 times the volume of the first drug dissolving chamber 11 .

[0049] In order to further ensure that the PAM powder can be stirred at a high speed when the particles are in an unmelted state, and stirred at a higher speed when the particles are semi-dissolved, and stirred at a low speed when the particles are completely melted, so as to effectively ensure that the dissolved medicine meets the usage requirements, in this embodiment, the target speed of the agitator 4 of the first dissolution chamber 11 is 2 to 4 times the target speed of the agitator 4 of the third dissolution chamber 13, and the target speed of the agitator 4 of the first dissolution chamber 11 is 1.5-2 times the target speed of the agitator 4 of the second dissolution chamber 12.

[0050] After water and medicine enter the first drug dissolution chamber 11, they can quickly enter a semi-dissolved state under the rapid stirring of the agitator 4 in the first drug dissolution chamber 11 to avoid agglomeration; since the volume of the first drug dissolution chamber 11 is reduced compared with the prior art, the stirring time can be avoided to be too long, thereby preventing bubbles from entering during the drug dissolution process; after entering the second drug dissolution chamber 12, the medicine continues to dissolve, and the target speed of the agitator 4 in the second drug dissolution chamber 12 is lower than the target speed of the agitator 4 in the first drug dissolution chamber 11, which can continue to prevent the generation of bubbles and achieve complete dissolution.

[0051] In this embodiment, a third partition 6 is provided between the agitator 4 and the first partition 2 in the first drug dissolving chamber 11, and the third partition 6 separates the first drug dissolving chamber 11 into an independent first stirring zone and a first anti-cross-flow partition, and a third flow port for connecting the first stirring zone and the first anti-cross-flow partition is provided at the bottom of the third partition 6;

[0052] A fourth partition 7 is arranged between the agitator 4 located in the second drug dissolution chamber 12 and the first partition 2. The fourth partition 7 divides the second drug dissolution chamber 12 into an independent second stirring zone and a second anti-cross-flow zone, and a fourth flow port for connecting the second stirring zone and the second anti-cross-flow zone is opened at the bottom of the fourth partition 7.

[0053] In this embodiment, the third partition plate 6 and the fourth partition plate 7 are arranged between the first drug dissolution chamber 11 and the second drug dissolution chamber 12 to form a first anti-cross-flow partition area and a second anti-cross-flow partition area. The first anti-cross-flow partition area, the first flow port and the second anti-cross-flow partition area are connected in sequence to form an anti-cross-flow barrier layer, which can prevent the drug (especially the particles that are not fully dissolved) in the first drug dissolution chamber 11 from directly entering the second drug dissolution chamber 12, thereby extending the residence time of the drug to ensure sufficient dissolution; at the same time, it can avoid the turbulence interference caused by the direct connection between the bottom of the first drug dissolution chamber 11 and the second drug dissolution chamber 12, which affects the stirring effect.

[0054] However, if the volume of the anti-cross-flow barrier is too small, the dissolution time will not be extended enough, and if it is too large, the head loss will increase. In order to solve this problem, in a further embodiment, the volume of the first anti-cross-flow barrier is 1 / 5 to 1 / 4 of the volume of the first dissolution chamber 11;

[0055] The volume of the second anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the second drug dissolution chamber 12 .

[0056] In this embodiment, a liquid level sensor is disposed in the third drug dissolving chamber 13 to obtain the liquid level information of the third drug dissolving chamber 13 so as to perform corresponding operations.

[0057] In this embodiment, an automatic water replenishment mechanism and an automatic drug administration mechanism are also included. The automatic water replenishment mechanism and the automatic drug administration mechanism are respectively connected to the inlet to realize automatic water replenishment and drug administration.

[0058] In this embodiment, a controller is also included, and the liquid level sensor, the first valve, the second valve, the three stirring drive mechanisms 5, the automatic water replenishment mechanism and the automatic drug delivery mechanism are electrically connected to the controller respectively.

[0059] In specific implementation, the controller is used to control the first valve to open and the second valve to close according to a preset program or an external instruction, and to start the three stirring drive mechanisms 5 at the same time;

[0060] The controller is also used to determine the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and control the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time, so that the automatic water replenishment mechanism replenishes water according to the water replenishment speed and the automatic medicine dosing mechanism doses medicine according to the medicine replenishment speed at the same time;

[0061] Among them, the controller obtains the liquid level of the third drug dissolving chamber 13 in real time through the liquid level sensor; when the liquid level of the third drug dissolving chamber 13 reaches the first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches the first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber 11 to stop working; when the time for the stirring drive mechanism of the first drug dissolving chamber 11 to stop working reaches the second preset time, the controller controls the stirring drive mechanism of the second drug dissolving chamber 12 to stop working;

[0062] The controller is also used to control the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward;

[0063] In the process of discharging the medicine liquid, the controller is also used to obtain the liquid level of the third medicine dissolving chamber 13 in real time through the liquid level sensor; whenever the liquid level of the third medicine dissolving chamber 13 drops to the second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanism of the first medicine dissolving chamber 11 and the second medicine dissolving chamber 12, and controls the automatic water replenishment mechanism and the automatic drug dosing mechanism to start at the same time, so that the automatic water replenishment mechanism replenishes water at the water replenishment speed and the automatic drug dosing mechanism replenishes drugs; wherein the second preset liquid level is lower than the first preset liquid level;

[0064] When the liquid level of the third drug dissolution chamber 13 reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug administration mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolution chamber 11 to stop working; when the time for the stirring drive mechanism of the first drug dissolution chamber 11 to stop working reaches a second preset time, the controller controls the stirring drive mechanism of the second drug dissolution chamber 12 to stop working.

[0065] It should be understood that the drug dissolving device in this embodiment discharges the medicine outward from the outlet normally while replenishing water, and because the inlet is arranged in the first drug dissolving chamber 11, and because the liquid in the second drug dissolving chamber 12 is the overflow of the liquid in the first drug dissolving chamber 11, and the liquid in the third drug dissolving chamber 13 is the overflow of the liquid in the second drug dissolving chamber 12, the liquid levels of the first drug dissolving chamber 11 and the second drug dissolving chamber 12 are always at a constant level during the water replenishment process. For this reason, the controller in this embodiment determines the water replenishment speed of the automatic water replenishment mechanism and the drug replenishment speed of the automatic drug dispensing mechanism according to the preset drug dissolving concentration, so as to ensure that the automatic water replenishment mechanism replenishes water at a constant water replenishment speed, and the automatic drug dispensing mechanism replenishes drugs at a constant drug replenishment speed, thereby ensuring that the liquid concentration is kept constant.

[0066] Therefore, during the water replenishment process, when the first valve of the inlet is opened and the automatic water replenishment mechanism and the automatic medicine replenishment mechanism are started, the liquid level in the third medicine dissolving chamber 13 will not rise immediately, but will still drop for a certain distance; when the second medicine dissolving chamber 12 meets the overflow condition, the liquid level of the third medicine dissolving chamber 13 will rise; similarly, after the water replenishment is completed and the automatic water replenishment mechanism is turned off, the liquid level of the third medicine dissolving chamber 13 will not stop immediately, but will still rise for a period of time. After the overflow condition is no longer met, the liquid level of the third medicine dissolving chamber 13 stops rising and reaches the highest liquid level of the third medicine dissolving chamber 13.

[0067] Therefore, this embodiment can realize the full-automatic drug dissolution of the drug dissolution equipment, and effectively ensure the stability of the drug concentration of the discharged drug solution and the continuity of the discharged drug solution.

[0068] The present invention also proposes a control method for a drug dissolving device, the drug dissolving device comprising: a box 1, three stirrers 4 and three stirring drive mechanisms 5, a liquid level sensor, a controller, an automatic water replenishment mechanism and an automatic drug dispensing mechanism;

[0069] The box body 1 is provided with a first partition 2 and a second partition 3 which are arranged in sequence along the length direction thereof. The first partition 2 and the second partition 3 divide the inside of the box body 1 into a first drug dissolving chamber 11, a second drug dissolving chamber 12 and a third drug dissolving chamber 13 which are arranged in sequence along the length direction thereof. The volume of the first drug dissolving chamber 11 is the same as that of the second drug dissolving chamber 12, and the volume of the third drug dissolving chamber 13 is 3 to 5 times that of the first drug dissolving chamber 11.

[0070] The top of the first partition plate 2 is provided with a first flow port for connecting the first drug dissolving chamber 11 and the second drug dissolving chamber 12, and the top of the second partition plate 3 is provided with a second flow port for connecting the second drug dissolving chamber 12 and the third drug dissolving chamber 13;

[0071] An inlet is provided at the top of the box body 1 corresponding to the first drug dissolving chamber 11, and a first valve is provided in the inlet; an outlet is provided at the bottom of the box body 1 corresponding to the second drug dissolving chamber 12, and a second valve is provided in the outlet; the automatic water replenishment mechanism and the automatic drug dispensing mechanism are respectively connected to the inlet;

[0072] The three agitators 4 are respectively arranged vertically in the first drug dissolution chamber 11, the second drug dissolution chamber 12 and the third drug dissolution chamber 13, and the top ends of the shafts of the three agitators 4 extend out of the top walls of the drug dissolution chambers and are connected to the three stirring drive mechanisms 5 in a one-to-one corresponding manner. The stirring drive mechanisms are used to drive the corresponding agitators 4 to rotate, and the target rotation speeds of the agitators 4 in the first drug dissolution chamber 11, the second drug dissolution chamber 12 and the third drug dissolution chamber 13 are gradually reduced;

[0073] The liquid level sensor is arranged in the third drug dissolving chamber 13, and the liquid level sensor, the first valve, the second valve, the three stirring drive mechanisms 5, the automatic water replenishing mechanism and the automatic drug dispensing mechanism are electrically connected to the controller respectively;

[0074] The control method includes: the controller controls the first valve to open and the second valve to close according to a preset program or an external instruction, and simultaneously starts the three stirring drive mechanisms 5;

[0075] The controller determines the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and controls the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time, so that the automatic water replenishment mechanism replenishes water according to the water replenishment speed and the automatic medicine dosing mechanism doses medicine according to the medicine replenishment speed at the same time;

[0076] The controller obtains the liquid level of the third drug dissolving chamber 13 in real time through the liquid level sensor;

[0077] When the liquid level of the third drug dissolving chamber 13 reaches the first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve;

[0078] When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber 11 to stop working;

[0079] When the time for the stirring driving mechanism of the first drug dissolving chamber 11 to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber 12 to stop working;

[0080] The controller controls the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward;

[0081] During the process of discharging the drug solution, the controller obtains the liquid level of the third drug dissolving chamber 13 in real time through the liquid level sensor;

[0082] Whenever the liquid level of the third drug dissolving chamber 13 drops to the second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanism of the first drug dissolving chamber 11 and the second drug dissolving chamber 12, and controls the automatic water replenishment mechanism and the automatic drug dosing mechanism to start at the same time, so that the automatic water replenishment mechanism replenishes water at the water replenishment speed and the automatic drug dosing mechanism replenishes drugs at the same time; wherein the second preset liquid level is lower than the first preset liquid level;

[0083] When the liquid level of the third drug dissolving chamber 13 reaches the first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve;

[0084] When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber 11 to stop working;

[0085] When the time for the stirring driving mechanism of the first drug dissolving chamber 11 to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber 12 to stop working.

[0086] In this embodiment, the target speed of the agitator 4 of the first dissolution chamber 11 is 2 to 4 times the target speed of the agitator 4 of the third dissolution chamber 13, and the target speed of the agitator 4 of the first dissolution chamber 11 is 1.5 to 2 times the target speed of the agitator 4 of the second dissolution chamber 12.

[0087] In this embodiment, a third partition 6 is provided between the agitator 4 and the first partition 2 in the first drug dissolving chamber 11, and the third partition 6 separates the first drug dissolving chamber 11 into an independent first stirring zone and a first anti-cross-flow partition, and a third flow port for connecting the first stirring zone and the first anti-cross-flow partition is provided at the bottom of the third partition 6;

[0088] A fourth partition 7 is arranged between the agitator 4 located in the second drug dissolution chamber 12 and the first partition 2. The fourth partition 7 divides the second drug dissolution chamber 12 into an independent second stirring zone and a second anti-cross-flow zone, and a fourth flow port for connecting the second stirring zone and the second anti-cross-flow zone is opened at the bottom of the fourth partition 7.

[0089] In a further embodiment, the volume of the first anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the first drug dissolution chamber 11;

[0090] The volume of the second anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the second drug dissolution chamber 12 .

[0091] The present invention will be described below with reference to specific embodiments.

[0092] Example 1

[0093] In this embodiment, the volume ratio of the first dissolving chamber 11, the second dissolving chamber 12 and the third dissolving chamber 13 is 1:1:4, the target speed ratio is 3:2:1, and the stirring drive mechanism is a stirring motor. Among them, the water replenishment speed is 220m3 / h; the speed of the stirring motor of the first dissolving chamber 11 is 350r / min; the amount of PAM per hour, that is, the replenishment speed, is 660mg; the designed dosage is 3.0mg / L, and the theoretical dissolving concentration of PAM is 0.1%.

[0094] Results: There are no undissolved particles in the solution of the third drug dissolving chamber 13 in this embodiment, the solution is uniform, and has reached the theoretical drug dissolving concentration.

[0095] Example 2

[0096] In this embodiment, the volume ratio of the first dissolving chamber 11, the second dissolving chamber 12 and the third dissolving chamber 13 is 1:1:4, the target speed ratio is 3:2:1, and the stirring drive mechanism is a stirring motor. Among them, the water replenishment speed is 330m 3 / h; the speed of the stirring motor of the first dissolving medicine chamber 11 is 350r / min; the amount of PAM per hour, that is, the replenishment rate, is 1320mg; the designed dosage is 4.0mg / L, and the theoretical dissolving medicine concentration of PAM is 0.14%.

[0097] Results: The solution in the third drug dissolving chamber 13 in this embodiment has a small amount of bubbles, the solution is uniform, and has reached the theoretical drug dissolving concentration.

[0098] Comparative Example 1

[0099] In this comparative example, the volume ratio of the first drug dissolving chamber 11, the second drug dissolving chamber 12 and the third drug dissolving chamber 13 is 1:1:4, the target rotation speed ratio is 3:2:1, and the stirring driving mechanisms are all stirring motors.

[0100] Among them, the water replenishment speed is 220m 3 / h; the speed of the stirring motor of the first dissolving medicine chamber 11 is 95r / min; the amount of PAM per hour, ie, the replenishment rate, is 660mg; the designed dosage is 3.0mg / L, and the theoretical dissolving concentration of PAM is 0.1%.

[0101] Results: The solution in the third drug dissolving chamber 13 in this embodiment has a large number of undissolved particles, the drug dissolving is obviously uneven, and the theoretical drug dissolving concentration is not reached.

[0102] Comparative Example 2

[0103] In this comparative example, the volume ratio of the first drug dissolving chamber 11, the second drug dissolving chamber 12 and the third drug dissolving chamber 13 is 1:1:4, the target rotation speed ratio is 3:2:1, and the stirring driving mechanisms are all stirring motors.

[0104] Among them, the water replenishment speed is 330m 3 / h; the speed of the stirring motor of the first dissolving medicine chamber 11 is 350r / min; the amount of PAM per hour, that is, the replenishment rate, is 1320mg; the designed dosage is 4.0mg / L, and the theoretical dissolving medicine concentration of PAM is 0.14%.

[0105] Results: The solution in the third drug dissolving chamber 13 in this embodiment contained a large number of undissolved particles, and the solution was obviously uneven, failing to reach the theoretical drug dissolving concentration.

[0106] It can be seen that in the present invention, by reducing the volume of the primary and secondary dissolving zones, the corresponding stirring speed can be increased, the total dissolving time can be reduced, and at the same time, the drug can be completely dissolved to achieve the required drug concentration and flocculation effect, avoiding the problems of insufficient drug concentration, increased drug cost, and increased sludge volume caused by increased dosage; moreover, by appropriately increasing the dosage of PAM powder, the drug concentration can be increased by ensuring the drug dissolving effect, the overall PAM solution demand can be reduced, and the drug cost can be further reduced; in addition, when the water flow rate and the hourly dosage of PAM are the same, the faster the stirring motor speed of the first dissolving chamber 11, the better the drug dissolving effect, the more fully the drug is dissolved, and the required drug concentration can be approached or reached; for the same first dissolving chamber 11, the faster the stirring motor speed, the more drug can be dissolved. Therefore, it can be inferred that by increasing the speed of the stirring motor, the drug concentration of the drug can be increased within the same drug dissolving time, the drug dissolving volume of the drug dissolving chamber can be reduced, and production costs can be saved.

[0107] The present invention increases the stirring speed of the first dissolving chamber 11 and the second dissolving chamber 12 while reducing the dissolving volume of the dissolving chamber, and reduces the stirring speed of the third dissolving chamber 13. Without destroying the molecular structure of PAM, the PAM powder is stirred at a higher speed in a smaller space, which can achieve a better dissolution effect and avoid interrupting the PAM molecular chain structure due to excessively high speed, thereby failing to achieve a flocculation effect.

[0108] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drug dissolving device and a drug dissolving control method, characterized in that: include: A box body (1), three stirrers (4) and three stirring drive mechanisms (5); A first partition (2) and a second partition (3) are arranged in sequence along the length direction of the box body (1). The first partition (2) and the second partition (3) divide the interior of the box body (1) into a first drug dissolving chamber (11), a second drug dissolving chamber (12) and a third drug dissolving chamber (13) which are arranged in sequence along the length direction of the box body (1). The volume of the first drug dissolving chamber (11) is the same as the volume of the second drug dissolving chamber (12), and the volume of the third drug dissolving chamber (13) is greater than the volume of the first drug dissolving chamber (11). A first flow port for connecting the first drug dissolving chamber (11) and the second drug dissolving chamber (12) is provided on the top of the first partition (2), and a second flow port for connecting the second drug dissolving chamber (12) and the third drug dissolving chamber (13) is provided on the top of the second partition (3); An inlet is provided at the top of the box body (1) corresponding to the first drug dissolving chamber (11), and a first valve is provided in the inlet; an outlet is provided at the bottom of the box body (1) corresponding to the second drug dissolving chamber (12), and a second valve is provided in the outlet. The three agitators (4) are respectively arranged vertically in the first drug dissolution chamber (11), the second drug dissolution chamber (12) and the third drug dissolution chamber (13), and the top ends of the shafts of the three agitators (4) extend out of the top walls of the drug dissolution chambers and are connected to the three agitation driving mechanisms (5) in a one-to-one corresponding manner. The agitation driving mechanisms are used to drive the corresponding agitators (4) to rotate, and the target rotation speeds of the agitators (4) in the first drug dissolution chamber (11), the second drug dissolution chamber (12) and the third drug dissolution chamber (13) are gradually reduced.

2. The drug dissolving equipment according to claim 1, characterized in that: The volume of the third drug dissolving chamber (13) is 3 to 5 times the volume of the first drug dissolving chamber (11).

3. The drug dissolving equipment according to claim 1, characterized in that: The target speed of the agitator (4) of the first drug dissolution chamber (11) is 2 to 4 times the target speed of the agitator (4) of the third drug dissolution chamber (13), and the target speed of the agitator (4) of the first drug dissolution chamber (11) is 1.5 to 2 times the target speed of the agitator (4) of the second drug dissolution chamber (12).

4. The drug dissolving equipment according to claim 3, characterized in that: A third partition (6) is arranged between the stirrer (4) and the first partition (2) in the first drug dissolving chamber (11), the third partition (6) divides the first drug dissolving chamber (11) into an independent first stirring zone and a first anti-cross-flow partition, and a third flow port for connecting the first stirring zone and the first anti-cross-flow partition is provided at the bottom of the third partition (6); A fourth partition (7) is arranged between the agitator (4) located in the second drug dissolution chamber (12) and the first partition (2), and the fourth partition (7) divides the second drug dissolution chamber (12) into an independent second stirring zone and a second anti-cross-flow partition, and a fourth flow port for connecting the second stirring zone and the second anti-cross-flow partition is opened at the bottom of the fourth partition (7).

5. The drug dissolving equipment according to claim 4, characterized in that: The volume of the first anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the first drug dissolution chamber (11); The volume of the second anti-cross-flow partition is 1 / 5 to 1 / 4 of the volume of the second drug dissolution chamber (12).

6. The drug dissolving equipment according to claim 1, characterized in that: A liquid level sensor is arranged in the third drug dissolving chamber (13).

7. The drug dissolving equipment according to claim 6, characterized in that: It also includes an automatic water replenishment mechanism and an automatic medicine dispensing mechanism, and the automatic water replenishment mechanism and the automatic medicine dispensing mechanism are respectively connected to the inlet.

8. The drug dissolving equipment according to claim 7, characterized in that: It also includes a controller, and a liquid level sensor, a first valve, a second valve, three stirring drive mechanisms (5), an automatic water replenishment mechanism and an automatic drug delivery mechanism are electrically connected to the controller respectively.

9. The drug dissolving equipment according to claim 8, characterized in that: The controller is used to control the first valve to open and the second valve to close according to a preset program or an external instruction, and to start three stirring drive mechanisms (5) at the same time; The controller is also used to determine the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and control the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time; The controller obtains the liquid level of the third drug dissolving chamber (13) in real time through the liquid level sensor; when the liquid level of the third drug dissolving chamber (13) reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber (11) to stop working; when the time for stopping the stirring drive mechanism of the first drug dissolving chamber (11) reaches a second preset time, the controller controls the stirring drive mechanism of the second drug dissolving chamber (12) to stop working; The controller is also used to control the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward; In the process of discharging the drug solution, the controller is also used to obtain the liquid level of the third drug dissolving chamber (13) in real time through the liquid level sensor; whenever the liquid level of the third drug dissolving chamber (13) drops to a second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanism of the first drug dissolving chamber (11) and the second drug dissolving chamber (12), and controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to start at the same time; wherein the second preset liquid level is lower than the first preset liquid level; When the liquid level of the third drug dissolving chamber (13) reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; when the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber (11) to stop working; when the time for the stirring drive mechanism of the first drug dissolving chamber (11) to stop working reaches a second preset time, the controller controls the stirring drive mechanism of the second drug dissolving chamber (12) to stop working.

10. A control method for a drug dissolving device, characterized in that: Applicable to the drug dissolving equipment as claimed in claim 8 or 9; The control method comprises: a controller controls the first valve to open and the second valve to close according to a preset program or an external instruction, and simultaneously starts three stirring drive mechanisms (5); The controller determines the water replenishment speed of the automatic water replenishment mechanism and the medicine replenishment speed of the automatic medicine dosing mechanism according to the preset dissolved medicine concentration, and controls the automatic water replenishment mechanism and the automatic medicine dosing mechanism to start at the same time; The controller obtains the liquid level of the third drug dissolving chamber (13) in real time through the liquid level sensor; When the liquid level of the third drug dissolving chamber (13) reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber (11) to stop working; When the time for the stirring driving mechanism of the first drug dissolving chamber (11) to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber (12) to stop working; The controller controls the second valve to open according to a preset program or an external instruction to discharge the liquid medicine outward; During the process of discharging the drug solution, the controller obtains the liquid level of the third drug dissolving chamber (13) in real time through the liquid level sensor; Whenever the liquid level of the third drug dissolving chamber (13) drops to a second preset liquid level, the controller immediately controls the first valve to open and immediately starts the stirring drive mechanisms of the first drug dissolving chamber (11) and the second drug dissolving chamber (12), and controls the automatic water replenishment mechanism and the automatic drug dosing mechanism to start simultaneously; wherein the second preset liquid level is lower than the first preset liquid level; When the liquid level of the third drug dissolving chamber (13) reaches a first preset height, the controller controls the automatic water replenishment mechanism and the automatic drug dispensing mechanism to stop at the same time, and controls the closing of the first valve; When the time for closing the first valve reaches a first preset time, the controller controls the stirring drive mechanism of the first drug dissolving chamber (11) to stop working; When the time for the stirring driving mechanism of the first drug dissolving chamber (11) to stop working reaches a second preset time, the controller controls the stirring driving mechanism of the second drug dissolving chamber (12) to stop working.

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