Double-ring underwater stirrer that maximizes fluid inflow

Abstract

The present invention comprises: a drive motor embedded in the installation space of a motor housing, equipped with a drive shaft, and electrically connected to a power cable, for maximizing the inflow volume and flow velocity of fluid flowing into the agitator and preventing external air from flowing in along with the sewage in the form of air bubbles when the water surface and the agitator are close at a low water level, thereby reducing the agitation efficiency of the sludge contained in the sewage; an impeller having a plurality of blades coupled to the drive shaft and rotating to discharge the sucked fluid forward to agulate it; and an inner guide ring including a plurality of internal support pieces spaced apart from each other and formed with an inlet formed between them to be coupled to the front end of the housing to support and fix the inner guide ring, a fluid guide part connected to the internal support pieces to guide the inflowing fluid, and an inclined part connected to the fluid guide part, the outer surface being formed such that the diameter gradually narrows toward the front. An underwater agitator comprising: an outer guide ring including a plurality of external support pieces spaced apart from each other and formed with an inlet formed between them to support and fix the outer guide ring by being coupled to the front end of the housing or the fluid guide part of the inner guide ring, the external guide ring including a fluid guide part connected to the external support pieces to guide the incoming fluid, and an inclined part connected to the fluid guide part such that the outer surface gradually narrows in diameter toward the front; and a plurality of baffles spaced apart from each other at a certain interval between the inner guide ring and the outer guide ring to form multiple discharge pipes, and configured to allow the water flow of the fluid introduced into the outer guide ring to pass through the discharge pipes and proceed smoothly toward the front; wherein the agitator comprises: a bubble prevention part extending toward the fluid inlet at a predetermined angle and length relative to the fluid guide part to prevent the inflow of a vortex containing air bubbles by preventing the vortex from being caught at the end during agitation.A double-ring underwater agitator for maximizing fluid inflow is disclosed, characterized in that the fluid guide portion is additionally configured such that it is formed at a predetermined angle inclined toward the direction in which fluid flows in from the inner guide ring and the outer guide ring, thereby allowing the fluid to be collected and flowed toward the inner guide ring and the outer guide ring, and the diaphragm is formed long in the direction in which the fluid is discharged, thereby allowing the fluid to be stably guided and discharged throughout the entire section passing between the inner guide ring and the outer guide ring.

Description

Technology Field

[0001] The present invention relates to a double-ring underwater stirrer that maximizes fluid inflow. Background Technology

[0003] In modern society, characterized by consumerism and industrial activity, various types of waste are continuously discharged as byproducts of material civilization; among these, waste discharged in liquid form is called wastewater.

[0004] When classifying such wastewater according to its source, it is categorized into domestic wastewater and industrial wastewater. Domestic wastewater accounts for the majority of urban wastewater today and refers to wastewater discharged from individual households, public buildings, or commercial establishments. Industrial wastewater, on the other hand, is discharged from factories and, in a broader sense, can be referred to as industrial wastewater; it is a collective term for wastewater discharged from all industrial facilities. This category also includes livestock wastewater.

[0005] In addition, wastewater, including liquid waste and rainwater flowing into urban sewers, is discharged into natural water bodies either through urban public sewers or directly. In either case, when discharged without proper treatment, it contaminates the water quality of natural water bodies; if the extent is excessive, it causes pollution and becomes a cause of serious environmental pollution, such as the generation of foul odors.

[0006] Specific prior art regarding underwater agitators includes the following technologies.

[0007] Korean Patent Registration No. 10-0927233 relates to an underwater agitator characterized by comprising: a guide post installed upward from the bottom surface of a wastewater collection tank containing various types of sewage and sediment; a motor horizontally positioned within a main body and a vane installed on the motor shaft to discharge wastewater forward and agitate it when the vane rotates, wherein the rear end of the main body corresponding to the wastewater discharge end on the vane side is coupled to be adjacent to the guide post and moves along the guide post and is fixed at any position; a lifting device connected to the agitator main body via a lifting chain positioned downward along the guide post to raise the agitator, and a ring-shaped inducer mounted on the rear end of the agitator to induce fluid flow so that sewage and sediment can be smoothly sucked into it. By implementing a structure capable of activating the suction and discharge of wastewater, the flow of wastewater can be made smoother, thereby reducing unnecessary power consumption while improving agitation efficiency.

[0008] Korean Patent Registration No. 10-2721022 relates to an underwater agitator comprising a propeller that agitates by sucking in and discharging fluid collected in a collection tank, a stirring motor that rotates the propeller, and a propeller cover that surrounds the circumference of the propeller to guide the suction and discharge of the fluid, wherein the underwater agitator has a vortex-generating cover portion installed in front of the propeller cover and having a spiral groove formed on its inner circumference to guide the fluid discharged by the propeller and generate a vortex, thereby increasing the stirring distance by generating a regular vortex in the axial direction of the rotation axis and increasing the stirring distance, so that stirring performance can be improved.

[0009] Korean Patent Registration No. 10-1450085 relates to a height-adjustable underwater agitator comprising a motor casing that accommodates a drive motor, an impeller provided on the drive shaft of the drive motor for sucking in and discharging fluid, and a discharging casing that surrounds the circumference of the impeller, wherein the agitator comprises a casing fixing part protruding outwardly from the motor casing, a guide rail coupled to allow the casing fixing part to slide and guide the vertical movement of the agitator, and a driving mechanism coupled to the casing fixing part and providing a driving force to move the underwater agitator vertically. Since the height at which the agitator is installed can be adjusted, the flow of wastewater can be controlled and unnecessary power loss can be prevented.

[0010] However, the above-mentioned conventional underwater stirring technologies do not effectively solve the problem that when the underwater stirrer is placed at a low water level, external air flows in along with the sewage vortexing in the form of air bubbles when the water surface and the stirrer are close, thereby reducing the stirring efficiency of the sludge contained in the sewage, and also that foam or air bubbles placed on the water surface flow into the drive motors, thereby reducing the stirring efficiency. Prior art literature

[0012] Republic of Korea Patent Registration No. 10-0927233 (Registered Nov. 10, 2009, Title: Underwater Stirrer) Republic of Korea Patent Registration No. 10-2721022 (Registered Oct. 18, 2024, Title: Underwater Stirrer with Increased Stirring Distance by Vortex Generating Cover) Republic of Korea Patent Registration No. 10-1450085 (Registered Oct. 6, 2014, Title: Height-Adjustable Underwater Stirrer) The problem to be solved

[0013] The objective of the present invention is to provide a double-ring underwater stirrer that maximizes fluid inflow, which increases stirring efficiency by maximizing the inflow volume and velocity of the fluid entering the stirrer and smoothly discharging it forward while forming rapid and turbulent currents such as a jet stream.

[0014] Another objective of the present invention is to provide a double-ring underwater agitator that maximizes fluid inflow, which prevents external air from being introduced along with the sewage in a swirling form of air bubbles when the water surface and the agitator are close at a low water level, thereby reducing the agitation efficiency of the sludge contained in the sewage.

[0015] Another objective of the present invention is to provide a double-ring underwater stirrer that maximizes fluid inflow, wherein the underwater stirring angle can be adjusted by one-touch operation according to the fluid flow.

[0017] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0019] The double-ring underwater stirrer of the present invention that maximizes fluid inflow to achieve the above objective

[0020] A drive motor embedded in the installation space of a motor housing, equipped with a drive shaft, and electrically connected to a power cable;

[0021] An impeller having multiple blades coupled to the above-mentioned drive shaft and rotating to discharge the sucked fluid forward and agitate it;

[0022] An internal guide ring comprising: a plurality of internal support pieces spaced apart from each other and formed with an inlet formed therebetween to support and fix the internal guide ring by being installed spaced apart around the circumference of the impeller and connected to the front end of the housing; a fluid guide part connected to the internal support piece to guide the incoming fluid; and an inclined part connected to the fluid guide part, the outer surface of which is formed such that the diameter gradually narrows toward the front.

[0023] An outer guide ring comprising: a plurality of external support pieces spaced apart from each other and formed with an inlet formed therebetween to be coupled to the front end of the housing or the fluid guide part of the inner guide ring to support and fix the outer guide ring, the external support pieces being spaced apart from each other and coupled thereto to the front end of the housing or the fluid guide part of the inner guide ring to support and fix the outer guide ring; a fluid guide part connected to the external support pieces to guide the incoming fluid; and an inclined part connected to the fluid guide part, the outer surface of which is formed such that the diameter gradually narrows toward the front; and

[0024] A submersible agitator comprising: a plurality of plates formed spaced apart from each other at a constant interval between the inner guide ring and the outer guide ring to form multiple discharge pipes, and configured such that the flow of fluid introduced into the outer guide ring passes through the discharge pipes and proceeds smoothly toward the front;

[0025] A bubble prevention part is additionally configured to extend toward the fluid inlet at a predetermined angle and length relative to the fluid guide part, so as to prevent vortices containing air bubbles from entering when vortices are caught at the end during stirring.

[0026] The above fluid guide portion is formed at a predetermined angle of inclination toward the direction in which fluid flows from the inner guide ring and the outer guide ring, so that the fluid is collected and flows toward the inner guide ring and the outer guide ring.

[0027] The above-mentioned diaphragm is formed to be elongated in the direction of fluid discharge, characterized in that the fluid is stably guided and discharged throughout the entire section passing between the inner guide ring and the outer guide ring.

[0028] In the present invention, the bubble prevention part

[0029] When the underwater agitator is positioned close to the water surface as the water level decreases, it is characterized by being formed on the upper part of the outer guide ring to prevent external air from flowing into the interior of the inner and outer guide rings along with the sewage swirling in the form of air bubbles, thereby preventing a reduction in the agitation efficiency of the sludge contained in the sewage.

[0030] In the present invention, when the angle is to be adjusted by rotating the underwater agitator to the left or right, a rotating member fixed to a guide support connected to the underwater agitator moves downward by elastic force and moves out of a fixed state to become rotatable when pressed downward with a single touch; and

[0031] The one-touch rotary support column angle adjustment device is further characterized by comprising: a rotor fixing member that, when the above-mentioned rotating member is rotated to the left or right, the guide support column is linked to rotate to the left or right, thereby causing the stirrer to rotate to the left or right by a desired angle, and when the pressing state of the rotor is released, the rotor rises by elastic force to maintain the angle adjustment state. Effects of the invention

[0033] According to the double-ring underwater agitator of the present invention that maximizes fluid inflow, the amount and velocity of the fluid flowing into the agitator are maximized, and the agitation efficiency can be maximized by smoothly discharging it forward while forming rapids and turbulence such as a jet stream.

[0034] In addition, when the water surface and the agitator are close at a low water level, external air is prevented from flowing in along with the sewage in the form of air bubbles, thereby preventing a decrease in the agitation efficiency of the sludge contained in the sewage.

[0035] In addition, when changing the stirring position of the underwater agitator according to the fluid flow, the angle of the agitator can be adjusted with a single touch, making it very convenient.

[0037] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description of the invention or the claims. Brief explanation of the drawing

[0039] FIGS. 1a and 1b are perspective views of a double-ring underwater stirrer according to an embodiment of the present invention. FIG. 2 is a side cross-sectional view of a double-ring underwater stirrer according to an embodiment of the present invention. FIG. 3 is a front view of a double-ring underwater stirrer according to an embodiment of the present invention. FIG. 4 is a configuration diagram of a control device for a double-ring underwater stirrer according to an embodiment of the present invention. FIG. 5 is a side view showing the installation state of the guide support of a one-touch rotary support according to the present invention. FIG. 6 is a cross-sectional view showing the angle adjustment part of a one-touch rotary support column according to the present invention. FIG. 7 is a perspective view showing the angle adjustment part of a one-touch rotary support column according to the present invention. Clear embodiments of the present invention are illustrated in the drawings above and will be described in more detail below. These drawings are not intended to limit the scope of the spirit of the present invention in any way, but are intended to enable those skilled in the art to understand the concept of the present invention by referring to specific embodiments. Specific details for implementing the invention

[0040] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description.

[0041] However, this is not intended to limit the invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0042] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention.

[0043] The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0044] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains.

[0045] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0046] FIGS. 1a and 1b are perspective views of a double-ring underwater agitator according to an embodiment of the present invention. FIG. 2 is a side cross-sectional view of a double-ring underwater agitator according to an embodiment of the present invention. FIG. 3 is a front view of a double-ring underwater agitator according to an embodiment of the present invention.

[0047] As illustrated in FIGS. 1 to 3, the double-ring underwater agitator (1) according to the present invention is installed underwater inside a structure such as a sewage or wastewater treatment plant to agitate the fluid, thereby preventing the sedimentation, adhesion, and decay of solids. It comprises a housing (100), a driving motor (200), an impeller (300), an inner guide ring (400), an outer guide ring (500), a fluid guide section (425, 525), a bubble prevention section (505), and a diaphragm (600), and may optionally include a support frame (700), a clamp (800), a sliding piece (900), etc.

[0048] The above housing (100) may include a motor housing (120), a bearing housing (130), and a sealing cover (140) with an installation space (110) formed inside.

[0049] The above motor housing (120) is manufactured by precision casting and has a drive motor (200) and a drive shaft (210) built inside, and a power cable (220) is connected to the top while being sealed to the outside by a fastening part (121).

[0050] Meanwhile, a reduction gear (not shown) for controlling the rotational speed of the drive motor (200) may be installed at the front end of the housing (120).

[0051] The bearing housing (130) is coupled to the front and rear ends of the motor housing (120), respectively, and has a bearing (135) that contacts the drive shaft (210) built inside, and a sealing member such as an O-ring is interposed between it and the motor housing (120).

[0052] The sealing cover (140) is fastened to a bearing housing (130) coupled to the front end of the motor housing (120), and a sealing member is interposed between the sealing cover and the bearing housing (130) to increase the airtightness inside the housing. At this time, a cushioning member (145) is installed on the outer circumference of the drive shaft (210) passing through the interior of the sealing cover (140) to cushion the vibration of the underwater agitator, thereby increasing durability.

[0053] The above-mentioned drive motor (200) is equipped with a drive shaft (210) and is horizontally embedded in an installation space (110) formed in the housing (100), and is electrically connected to a power cable (220) to enable driving. The drive shaft (210) is formed so that its front end is exposed to the outside of the housing (100) and is supported by a bearing (135) to rotate.

[0054] The above impeller (300) is provided on the drive shaft (210) of the drive motor (200) and has a plurality of blades (310) formed to suck in and discharge fluid. It is coupled to the front end of the drive shaft (210) and rotates in conjunction to discharge the sucked fluid forward, thereby sufficiently mixing it with solids.

[0055] The inner guide ring (400) is connected to the front end of the housing (100), i.e., the sealing cover (140), through a connecting ring (125) in which a plurality of connecting holes are formed, and a fixing member (B) passes through the connecting holes and is fastened to the sealing cover (140).

[0056] The inner guide ring (400) is installed at a predetermined interval around the outer circumference of the impeller (300) to guide the flow of fluid entering through the fluid inlet (415) forward. That is, the inner guide ring (400) is open at the front and rear to allow for smooth fluid outflow, and a plurality of internal support pieces (410) spaced apart from each other at the rear are connected to the connecting ring (125), allowing fluid to flow into the inlet between each internal support piece (410).

[0057] The inner support member (410) is formed so that its diameter gradually expands toward the front, thereby increasing the amount of fluid flowing in, and the fluid flows smoothly into the inlet formed between each inner support member (410), is mixed with solids, and then discharged forward.

[0058] The above fluid guide section (425) is connected to the internal support piece (410) so that the fluid introduced through the fluid guide section (425) flows inside the internal guide ring (400), increasing the flow velocity and enabling rapid stirring. It is formed at a predetermined angle of inclination toward the direction in which the fluid is introduced, thereby allowing the fluid entering through the inlet (415) to flow more smoothly, so that a larger amount of fluid is collected and introduced toward the internal guide ring (400). In other words, compared to the conventional method, the fluid flow toward the suction and discharge end of wastewater or sediment can be performed more smoothly, thereby improving stirring efficiency.

[0059] The inner guide ring (400) further includes an inclined portion (420) connected to the fluid guide portion (425) such that the outer surface gradually narrows in diameter toward the front, and accordingly, as the fluid introduced through the inlet (415) flows through the interior of the inner guide ring (400) having a predetermined angle of inclination, rapid stirring occurs as the flow velocity increases.

[0060] The above inner guide ring (400) causes the fluid velocity to increase further through the inclined portion (420), and since the rapid and turbulent flow, such as a jet stream formed inside the inner guide ring (400), is continuously maintained, the stirring efficiency is further increased, and the fluid is discharged as a rapid flow through the outlet.

[0061] The outer guide ring (500) is connected to the front end of the housing (100), i.e., the sealing cover (140), via a connecting ring (125) or to the fluid guide portion (425) of the inner guide ring (400). The outer guide ring (500) is installed at a predetermined interval around the outer circumference of the inner guide ring (400) to guide the flow of fluid entering through the fluid inlet (515) forward. That is, the outer guide ring (500) is open at the front and rear to allow for smooth fluid outflow, and the outer support pieces (510) formed at the rear at a distance from each other are connected to the connecting ring (125) or the fluid guide portion (425) of the inner guide ring (400), so that fluid flows into the inlet (515) between each outer support piece (510).

[0062] The above-mentioned external support member (510) is formed so that its diameter gradually expands toward the front, thereby increasing the amount of fluid flowing in, and the fluid flows smoothly into the inlet (515) formed between each external support member (510), is mixed with solids, and then discharged forward.

[0063] The above fluid guide section (525) is formed at a predetermined angle of inclination toward the direction in which the fluid flows in, thereby allowing the fluid flowing into the inlet (515) to flow more smoothly, and allowing a larger amount of fluid to be collected and flowed toward the outer guide ring (500). That is, compared to the conventional method, the fluid flow toward the suction and discharge end of wastewater or sediment can be performed more smoothly, thereby improving stirring efficiency.

[0064] The above outer guide ring (500) further includes an inclined portion (520) connected to the outer support piece (510) such that the outer surface gradually narrows in diameter toward the front, thereby causing rapid stirring as the fluid introduced through the inlet (515) flows through the interior of the outer guide ring (500) having a predetermined angle of inclination and the flow velocity increases.

[0065] The above outer guide ring (500) causes the fluid velocity to increase further through the inclined portion (520), and since rapid and turbulent currents, such as a jet stream formed inside the outer guide ring (500), are continuously maintained, the stirring efficiency is further increased, and the fluid is discharged as a rapid current through the outlet.

[0066] The bubble prevention section (505) is formed to extend a predetermined length at an angle different from that of the fluid guide section (525), and the length is variable. The upper portion of the outer guide ring (500) is formed to be longer than the lower portion, so that sewage flowing in while swirling on the water surface is caught by the bubble prevention section (505) and the swirl is broken. Accordingly, sewage containing sludge that is not swirling is guided by the fluid guide section (525) and flows into the interior of the inner and outer guide rings (400, 500).

[0067] That is, when the underwater agitator (1) is positioned close to the water surface as the water level decreases, the drive motor (200) is driven to rotate the impeller (300), and a vortex is generated in the form of a swirl, causing sewage to flow into the interior of the inner and outer guide rings (400, 500) through the fluid guide section (425, 525). At this time, when the water surface and the agitator are close, external air flows into the interior of the inner and outer guide rings (400, 500) along with the sewage swirling in the form of air bubbles, thereby reducing the agitation efficiency of the sludge contained in the sewage.

[0068] Therefore, bubbles or air bubbles placed on the water surface can be prevented from being caught in the bubble prevention part (505) and flowing into the impeller (300).

[0069] The above-mentioned plate (600) is configured between the inner guide ring (400) and the outer guide ring (500), and is installed spaced apart from each other at a certain interval to form multiple discharge pipes.

[0070] Therefore, as the fluid flow introduced into the inner guide ring (400) and the outer guide ring (500) passes through the discharge pipes between the baffles (600), not only is a dead zone not generated, but the flow of the fluid can also proceed smoothly toward the front without diverting to another direction.

[0071] In addition, the above-mentioned plate (600) is formed to be long in the direction in which the fluid is discharged, so that the fluid is stably guided and discharged throughout the entire section passing between the inner guide ring (400) and the outer guide ring (500).

[0072] In this way, the double-ring underwater stirrer (1) of the present invention is equipped with a double guide ring consisting of inner and outer guide rings (400, 500) on the outer side of the impeller (300), thereby increasing the flow rate and flow velocity of the fluid flowing into the stirrer, preventing the occurrence of dead zones, and as the incoming fluid rotates by the impeller (300), rapid currents and turbulence such as jet streams are formed and discharged forward, thereby making the fluid flow smooth, increasing the stirring efficiency, and preventing the sedimentation, adhesion, and decay of solids.

[0073] In addition, the double-ring underwater stirrer (1) of the present invention has a fluid guide section (425, 525) formed at a predetermined angle of inclination from the inner and outer guide rings (400, 500), so that more fluid flowing into the inner and outer guide rings (400, 500) flows in stably.

[0074] In addition, the double-ring underwater stirrer (1) of the present invention has a bubble prevention section (505) formed extending a predetermined length from the fluid guide section (525), but extending at a different angle from the fluid guide section (525), so that wastewater flowing in while swirling on the water surface is caught and prevented from flowing into the impeller (300), thereby preventing a decrease in stirring efficiency.

[0076] Next, a control device for a double-ring underwater stirrer according to an embodiment of the present invention will be described with reference to FIG. 4.

[0077] As illustrated in FIG. 4, the control configuration of the double-ring underwater stirrer in an embodiment of the present invention may be composed of a CPU (10), a winding temperature sensor (11), a bearing temperature sensor (12), a leakage sensor (13), a motor control unit (14), an alarm unit (15), and a display unit (16).

[0078] The CPU (10) can determine the state of the motor (200) based on the winding and bearing temperatures of the motor (200) input in real time through the winding and bearing temperature sensors (11)(12), and can control the power cutoff of the motor (200) based on this.

[0079] At this time, the remote control center and the control center administrator terminal can be networked with the control device via wired or wireless connections to share real-time motor status data.

[0080] In this case, the internal temperature of the motor (200) detected by the winding and bearing temperature sensors (11)(12) may be processed by the CPU (10) and then transmitted to a remote control center and a terminal via a communication unit, or the internal temperature of the motor detected by the winding and bearing temperature sensors (11)(12) may not be processed by the CPU (10), and may be configured so that the remote control center and the administrator terminal directly receive and process it via a communication unit.

[0081] The winding temperature sensor (11) detects the temperature of the winding configured in the motor in real time and inputs it to the CPU (10).

[0082] The bearing temperature sensor (12) detects the temperature of the bearing configured in the bearing housing (130) in real time and inputs it to the CPU (10).

[0083] The leak sensor (13) is installed in the motor housing (120) or bearing housing (130) to detect in real time whether fluid flowing into the stirrer for stirring is flowing into the motor housing (120) or bearing housing (130) and inputs this to the CPU (10).

[0084] The motor control unit (14) cuts off the driving power to the motor when the result processed by the CPU (10) indicates that the motor can no longer be driven. At this time, since cutting off the driving power without any prior notice may adversely affect the precise control of the control device, a message indicating that the driving power to the motor will be cut off can be output in advance through the alarm unit (15) and / or display unit (16).

[0085] The alarm unit (15) emits an alarm or message under the control of the CPU (10) so that an external manager can recognize it if the result processed by the CPU (10) is that the motor can no longer be driven or if a specific part needs to be replaced.

[0086] The display unit (16) displays the status data of the motor processed by the CPU (10) externally so that an administrator can check it. Instead of displaying the detection value, the display unit (16) may display a pre-agreed word or symbol, etc.

[0087] Meanwhile, the control device may be configured to additionally include a counter to count the accumulated driving time of the motor (200), and to diagnose the current state of the motor (200) and further the current state of the components constituting the motor (200) based on the accumulated driving time of the motor (200) processed by the CPU (10) and the winding and bearing temperatures.

[0089] Next, a technique for adjusting the angle of the double-ring underwater stirrer of the present invention in a one-touch manner will be described.

[0090] FIG. 5 is a side view showing the installation state of the guide post of the one-touch rotary support column according to the present invention. FIG. 6 is a cross-sectional view showing the angle adjustment part of the one-touch rotary support column according to the present invention. FIG. 7 is a perspective view showing the angle adjustment part of the one-touch rotary support column according to the present invention.

[0091] As illustrated in FIGS. 5 and 6, the angle adjustment unit (160) firmly attaches a support plate (161) to the upper side of the water tank and combines a support member (162) that protrudes horizontally from the support plate (161), and firmly combines a fixing plate (163) formed vertically at the front end with a fixing pin (164) on the upper surface of the support member (162) to form an integrated unit.

[0092] In addition, a rotor (165) is provided to be connected to the upper rotation axis (152) of a guide support (151) configured in the guide section (150) by a key, and a key (166) is formed in the connection space of the rotor (165) to be inserted into the key groove (153) formed in the rotation axis (152) of the guide support (151) so as to be connected to each other and simultaneously move vertically up and down, and it is preferable to attach a detachment prevention member (not shown) to the top to prevent the rotor (165) from being separated.

[0093] A flange is formed on the rotor (165), and a plurality of setting grooves (167) are sequentially formed on the outer surface of the flange so that the fixing pin (164) of the fixing plate (163) can be inserted and fixed, but when the rotor (165) moves downward, the setting grooves (167) can be disengaged from the fixing pin (164).

[0094] In addition, a spring (168) is fitted to the lower part of the rotor (165) to elastically install the rotor (165) upward, so that the fixing pin (164) of the fixing plate (163) can be continuously kept in the setting groove (167) and can also be easily detached with a single touch.

[0095] In addition, it is preferable to form an upper bearing (169) in the support (162) that connects to the upper rotation axis (152) of the guide post (151) so that the guide post (151) can rotate smoothly.

[0096] In the double-ring underwater stirrer angle adjustment device of the present invention configured as described above, when the stirrer (1) coupled to the guide post (151) is to be rotated to the left or right to adjust the angle, the rotor (165), which is elastically installed with separate equipment, is pressed downward with a single touch. As a result, the rotor (165) moves downward while compressing the spring (168), causing the setting groove (167) of the rotor (165) to move out of the fixing pin (164) of the fixing plate (163) and become rotatable.

[0097] At this time, when the rotor (165) is rotated to the left or right, the guide support (151) also rotates to the left or right in conjunction, so the stirrer (1) also rotates to the left or right by the desired angle, and when the pressing state of the rotor (165) is released, the rotor (165) rises due to the elasticity of the spring (168), and the fixing pin (164) of the fixing plate (163) is inserted into the setting groove (167), thereby allowing the angle adjustment state to be firmly and continuously maintained.

[0099] As explained above, the detailed description of the present invention describes preferred embodiments of the invention; however, this is merely an illustrative description of the best embodiments of the invention and is not intended to limit the invention. Furthermore, it is understood that anyone skilled in the art to which the present invention pertains can make various modifications and imitations within the scope of the technical concept of the invention without departing from its spirit. Explanation of the symbols

[0101] 1 : Double-ring underwater stirrer 10 : CPU 11: Winding temperature sensor 12: Bearing temperature sensor 13: Leakage sensor 14: Motor control unit 15: Alarm unit 16: Display unit 100 : Housing 110 : Installation space 120 : Motor housing 125 : Connecting ring 130: Bearing housing 140: Sealing cover 145 : Buffer member 200 : Drive motor 210 : Drive shaft 220 : Power cable 300: Impeller 310: Impeller blades 400: Inner guide ring 410: Inner support piece 415 : Inlet 420 : Sloped section 425 : Fluid guide section 500 : External guide ring 505: Anti-bubble part 510: External support piece 515 : Inlet 520 : Sloped section 525 : Fluid guide section 600 : Diaphragm 700 : Support frame 800 : Clamp 900: Sliding Section

Claims

Claim 1 A drive motor embedded in the installation space of a motor housing, equipped with a drive shaft, and electrically connected to a power cable; an impeller having multiple blades coupled to the drive shaft and rotating to discharge the sucked fluid forward and agitate it; an inner guide ring comprising: an inner support member formed spaced apart from each other and coupled to the front end of the housing to support and fix the inner guide ring, with an inlet formed between them; a fluid guide member connected to the inner support member to guide the incoming fluid; and an inclined portion connected to the fluid guide member, with its outer surface formed so that its diameter gradually narrows toward the front; and an outer support member formed spaced apart from each other and coupled to the front end of the housing or the fluid guide member of the inner guide ring to support and fix the outer guide ring, with an inlet formed between them; a fluid guide member connected to the outer support member to guide the incoming fluid; and an inclined portion connected to the fluid guide member, with its outer surface formed so that its diameter gradually narrows toward the front. An underwater agitator comprising: an outer guide ring including an inclined portion; and a plurality of baffles formed spaced apart from each other at a constant interval between the inner guide ring and the outer guide ring to form multiple discharge pipes, wherein the baffles are provided to allow the fluid flow introduced into the outer guide ring to pass through the discharge pipes and proceed smoothly toward the front; wherein the baffles are formed to extend toward the fluid inlet at a predetermined angle and a predetermined length relative to the fluid guide portion, thereby preventing the introduction of vortices containing air bubbles by preventing vortices from being caught at the ends during agitation.The fluid guide section is additionally configured, and the fluid guide section is formed at a predetermined angle of inclination toward the direction in which fluid flows in from the inner guide ring and the outer guide ring, so that the fluid is collected and flows toward the inner guide ring and the outer guide ring, and the diaphragm is formed long in the direction in which the fluid is discharged, so that the fluid is stably guided and discharged throughout the entire section passing between the inner guide ring and the outer guide ring, and the bubble prevention section is formed on the upper part of the outer guide ring to prevent external air from flowing into the interior of the inner and outer guide rings along with the sewage swirling in the form of air bubbles when the underwater agitator is positioned close to the water surface as the water level decreases, thereby preventing the agitation efficiency of the sludge contained in the sewage from decreasing, and the bubble prevention section is connected to the fluid guide section (525) and extends to the outer guide ring, but is formed to extend horizontally at a different angle from the fluid guide section, has a variable length, and is formed only on the upper part of the outer guide ring, and the inner support piece (410) is formed so that its diameter gradually expands toward the front, and the fluid guide section (425) is the inner A double-ring underwater stirrer for maximizing fluid inflow, characterized in that the fluid introduced through the fluid guide section (425) connected to the support member (410) is configured to increase the flow velocity as it flows through the interior of the inner guide ring (400), the outer guide ring (500) is coupled to the fluid guide section (425) of the inner guide ring (400) to allow fluid to flow into the inlet (515) between the outer support members (510), the outer support member (510) is formed so that its diameter gradually expands toward the front, and the fluid guide section (525) is formed at a predetermined angle of inclination toward the direction in which the fluid flows in, thereby allowing the fluid flowing into the inlet (515) to flow smoothly. Claim 2 delete Claim 3 A double-ring underwater stirrer that maximizes fluid inflow, characterized by additionally comprising: a one-touch rotary support angle adjustment device comprising: a rotating member fixed to a guide support connected to an underwater stirrer, which moves downward by elastic force and releases from a fixed state to become rotatable when the underwater stirrer is to be rotated to the left or right to adjust the angle; and a rotor fixing member which, as the rotating member is rotated to the left or right, the guide support rotates to the left or right in conjunction, thereby causing the stirrer to rotate to the left or right by a desired angle, and as the rotor is released from its pressed state, the rotor rises by elastic force to maintain the angle adjustment state.

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