KR102701644B1 - Industrial fluid flow control pump - Google Patents

Abstract

The present invention relates to an industrial fluid flow control pump, comprising: a housing having an inlet formed on one side and an outlet formed on the other side; an impeller rotatably provided inside the housing to generate a flow of fluid from the inlet to the outlet; a drive motor including a drive shaft; and an extension pipe connecting the impeller and the drive shaft to transmit rotational force.

Description

Industrial fluid flow control pump {Industrial fluid flow control pump}

The present invention relates to the field of pump technology, and more particularly to an industrial fluid flow control pump capable of controlling the flow of fluid more effectively and adapting to changes in flow rate.

Industrial fluid flow control pumps are used in a variety of industries to move water or other fluids. These pumps are widely used in areas such as raw material mining, chemical processing, wastewater treatment, and oil and gas refining.

Meanwhile, the industrial fluid flow control pump mainly consists of a housing, an impeller, a driving motor, and an extension pipe. The housing forms the main structure of the pump, and has an inlet on one side and an outlet on the other side. The impeller is located inside the housing and plays a role in generating the flow of fluid from the inlet to the outlet. The driving motor rotates the impeller, and this rotational power is transmitted to the impeller through the extension pipe.

However, existing industrial fluid flow control pumps have limited ability to respond appropriately to changes in the fluid flow rate, and in particular, the problem of pump performance deteriorating whenever the fluid flow rate changes occurs, and furthermore, this performance deterioration of the pump due to changes in the flow rate shortens the overall lifespan of the pump.

Moreover, the impeller of the existing pump has a single blade structure, making it difficult to control the flow of fluid more efficiently. The single blade structure induces the flow direction of the fluid in only one direction, which reduces the overall efficiency of the pump.

That is, since existing industrial fluid flow control pumps have limited functions in responding to changes in the flow rate of fluid and in effectively controlling the flow of fluid, a new type of industrial fluid flow control pump that improves these problems is needed.

The present invention is to solve the above-described problem, and the present invention responds appropriately to changes in the flow rate of a fluid, thereby reducing the performance degradation of the pump due to changes in the flow rate.

The present invention provides an industrial fluid flow control pump that improves the efficiency of the entire pump by efficiently controlling the flow direction of the fluid by adjusting the impeller's blades in a double manner rather than a single blade structure.

According to one embodiment of the present invention, an industrial fluid flow control pump comprises: a housing having an inlet formed on one side and an outlet formed on the other side; an impeller rotatably provided inside the housing to generate a flow of fluid from the inlet to the outlet; a drive motor including a drive shaft; and an extension pipe connecting the impeller and the drive shaft to transmit rotational force.

The above impeller includes a main blade which generates a main flow of fluid, a main rotating plate which is fitted and fixed to the extension pipe so that the main blade can rotate; and an auxiliary blade which generates an auxiliary flow of fluid, and an auxiliary rotating plate which is fitted and fixed to the extension pipe so that the auxiliary blade can rotate; and the auxiliary rotating plate is formed so as to be rotatable so as to be positioned in a first state in which the main blade and the auxiliary blade overlap and a second state in which the main blade and the auxiliary blade do not overlap while the main blade is fixed; a sensor unit which is positioned inside the suction port and measures the flow rate of the fluid being sucked; And it includes a rotation control unit that controls the rotation state of the auxiliary rotation plate; wherein the rotation control unit controls the auxiliary rotation plate to be positioned in the second state when the flow rate is measured within a first numerical range set by the sensor unit, and controls the auxiliary rotation plate to be positioned in the first state when the flow rate is measured within a second numerical range set higher than the first numerical range.

The above rotation control unit uses the state where one end of the main wing and one end of the auxiliary wing overlap as the reference angle, and rotates the auxiliary rotation plate by a preset angle whenever the flow rate of the fluid becomes slower than a preset interval range, thereby causing one area of the auxiliary wing to protrude. The rotation angle of the auxiliary rotation plate is determined by the following [Mathematical Formula 1]:

[Mathematical Formula 1]

In the above [Mathematical Formula 1], a denotes a rotation angle derived from the auxiliary rotary plate by the rotation control unit, v denotes a flow velocity (m/s) at the suction port measured by the sensor unit, A denotes a total cross-sectional area (cm²) of the auxiliary blade, w denotes a total weight (g) of the auxiliary blade, p denotes a density of the fluid (g/cm³), and k denotes a temperature (K) of the fluid.

The rotation speed of the above driving motor is determined through the following [Mathematical Formula 2], and the rotation control unit controls the power of the driving motor so that the derived rotation speed is maintained.

[Mathematical formula 2]

In the above mathematical expression 2, R represents the rotation speed (rpm) of the driving motor, R represents the initial rotation speed (rpm) when no fluid is introduced into the driving motor, a represents the rotation angle of the auxiliary rotating plate derived by the rotation control unit through the above [mathematical expression 1], H represents the maximum output (kw) of the driving motor, and d represents the volume (m³) of the space capable of accommodating fluid within the housing (100).

According to the present invention, an industrial fluid flow control pump can be provided which can reduce the performance degradation of the pump due to the change in the flow rate of the fluid by appropriately responding to the change in the flow rate of the fluid, and can efficiently control the flow direction of the fluid by controlling the blades of the impeller in a double structure rather than a single blade structure, thereby improving the efficiency of the entire pump.

FIG. 1 is a drawing illustrating the external configuration of an industrial fluid flow control pump according to one embodiment of the present invention.
FIG. 2 is a drawing illustrating a specific configuration of an industrial fluid flow control pump according to one embodiment of the present invention.
FIG. 3 is a drawing showing a cross-sectional view of an impeller of an industrial fluid flow control pump according to one embodiment of the present invention.
FIG. 4 is a drawing showing a specific configuration of an impeller of an industrial fluid flow control pump according to one embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numbers or symbols refer to components that perform substantially the same functions, and the size of each component in the drawings may be exaggerated for clarity and convenience of explanation. However, the technical idea of the present invention and its core configuration and operation are not limited to the configuration or operation described in the following embodiments. In describing the present invention, if it is determined that a specific description of a known technology or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In the embodiments of the present invention, terms including ordinal numbers such as first, second, etc. are used only for the purpose of distinguishing one component from another component, and singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, in the embodiments of the present invention, terms such as 'configured', 'include', 'have', etc. should be understood as not excluding in advance the possibility of the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. In addition, in the embodiments of the present invention, a 'module' or 'part' performs at least one function or operation, may be implemented as hardware or software, or may be implemented as a combination of hardware and software, and may be integrated into at least one module and implemented as at least one processor. In addition, in the embodiments of the present invention, at least one of a plurality of elements refers not only to all of the plurality of elements, but also to each one excluding the rest of the plurality of elements or all combinations thereof. Also, "configured to" can be used interchangeably with, for example, "suitable for," "having the capacity to," "designed to," "adapted to," "made to," or "capable of." "Configured to" does not necessarily mean only that something is "specifically designed to" in terms of hardware. Instead, in some contexts, the phrase "a device configured to" can mean that the device is "capable of" doing something in conjunction with other devices or components. For example, the phrase "a processor configured to perform A, B, and C" can mean a dedicated processor (e.g., an embedded processor) for performing the operations, or a generic-purpose processor (e.g., a CPU or application processor) that can perform the operations by executing one or more software programs stored in a memory device.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. This is intended to describe in detail enough to enable a person having ordinary knowledge in the technical field to which the present invention belongs to to easily carry out the invention, and it is to be understood that the technical idea and scope of the present invention are not limited thereby.

FIG. 1 is a drawing illustrating an external configuration of an industrial fluid flow control pump according to an embodiment of the present invention, FIG. 2 is a drawing illustrating a specific configuration of an industrial fluid flow control pump according to an embodiment of the present invention, FIG. 3 is a drawing illustrating a cross-sectional view of an impeller of an industrial fluid flow control pump according to an embodiment of the present invention, and FIG. 4 is a drawing illustrating a specific configuration of an impeller of an industrial fluid flow control pump according to an embodiment of the present invention.

Referring to FIGS. 1 to 4, the industrial fluid flow control pump (10) according to one embodiment of the present invention may exist in various types and may be designed to suit specific environments and requirements.

More specifically, an industrial fluid flow control pump (10) according to one embodiment of the present invention is a centrifugal pump that moves a fluid by applying centrifugal force to the fluid using a rotating impeller and increasing the pressure by pushing the fluid toward the periphery of the pump through the centrifugal force, a gear pump that operates in a manner in which a plurality of gears inside the pump rotate to suck the fluid into the gears and the internal space of the pump, and then push the fluid out to the discharge port according to the rotation of the gears, and a metering pump that operates in a manner in which a flexible diaphragm sucks and discharges the fluid. It may include a diaphragm pump that moves the fluid by utilizing the pressure difference in the chamber formed in the front and rear of the diaphragm, an axial pump that moves the fluid by moving the fluid in the direction of the rotational axis and pushing the fluid in the direction of the axial line of the pump to generate pressure, and the like. That is, an industrial fluid flow control pump according to the present invention may include all of various pumps (10) that take into consideration operating conditions, characteristics of the fluid, required flow rate and pressure, etc.

Meanwhile, for the convenience of explanation, the present invention is described assuming a centrifugal pump, but the scope of the present invention is not limited thereto.

In one embodiment of the present invention, an industrial fluid flow control pump (10) may include a housing (100), an impeller (200), a driving motor (400), and an extension pipe (300).

A housing (100) according to one embodiment of the present invention is mainly made of metal or high-strength plastic to protect internal components of the pump and provide a flow path for the fluid. For example, the housing (100) is made of aluminum alloy, and an inlet and an outlet are appropriately positioned inside. This housing (100) serves to protect internal components of the pump from the external environment while ensuring safe movement of the fluid.

Meanwhile, the design of the housing (100) according to the present invention can have a significant impact on the overall performance and efficiency of the pump, and therefore, the shape and structure of the housing (100) play an important role in optimizing the flow path of the fluid to minimize fluid loss and maximize efficiency. To this end, the inner surface of the housing (100) can be made smooth to minimize factors that impede the flow of the fluid, thereby reducing damage to the pump.

In addition, since the housing (100) comes into direct contact with the fluid, it must be manufactured from a material having fire resistance, corrosion resistance, etc. for a specific fluid. For example, in the chemical industry, the pump can be used to process strong chemicals such as acids and bases. Therefore, the housing (100) according to the present invention can preferably be made of various alloys or special plastics rather than aluminum alloy.

An impeller (200) according to one embodiment of the present invention may be made of stainless steel, bronze or other high strength material and has a plurality of blades on a rotating plate. For example, the impeller (200) may be a stainless steel impeller (200) having six curved blades, and such an impeller (200) may be fixed or may be provided to be able to rotate on its own to better control the flow of fluid.

Meanwhile, the design of the impeller (200) according to the present invention affects the overall performance and efficiency of the pump, and in particular, the number, shape, arrangement, curvature, etc. of the blades all affect determining the flow speed, direction, pressure, etc. of the fluid. Therefore, the shape of the impeller (200) can be customized to suit requirements according to various environments.

Meanwhile, since the impeller (200) according to the present invention mainly rotates inside the housing (100) and plays a role in allowing the fluid to move quickly from the intake port to the exhaust port, the impeller (200) must be manufactured from a material having strong wear resistance and corrosion resistance. In particular, since strong chemicals are processed in the chemical industry, etc., the impeller (200) can be manufactured from a material having fire resistance and corrosion resistance against such chemicals.

The driving motor (400) according to one embodiment of the present invention serves to provide rotational force to the impeller (200), and may be provided as, for example, an electric motor, and for example, a three-phase AC induction motor having an output of 5.5 kW may be used. Such a driving motor (400) provides the rotational force required for the impeller (200) and plays an important role in determining the performance and efficiency of the pump.

Meanwhile, the driving motor (400) according to the present invention may vary depending on the purpose of the pump, required output, power type, efficiency requirements, etc. For example, for large pumps that must be operated continuously, such as those used in the fields of sewage treatment and water treatment, an induction motor with high output and efficiency may be used, while for pumps that operate intermittently or are small, a motor with lower output may be used.

Meanwhile, since the drive motor (400) according to the present invention must provide a very precise rotational power control function required to drive the impeller (200), the output of the motor can be finely adjusted by a control device such as an inverter or a servo driver. Such a control device adjusts the speed, torque, rotation direction, etc. of the motor as needed, thereby optimizing the fluid flow of the pump and minimizing power consumption.

In addition, since the drive motor (400) according to the present invention must maintain high efficiency and reliability for a long period of time, the motor must be designed to be robust enough to withstand conditions such as high temperature, overload, and vibration, and protection functions such as a cooling device, an overcurrent protection device, and an overload protection device may be added. Through this, the life of the motor can be extended and stable operation of the pump can be ensured.

An extension pipe (300) according to one embodiment of the present invention connects the shaft of the driving motor (400) and the impeller (200), and may be made of stainless steel or other high-strength material. For example, the extension pipe (300) may be a connecting shaft made of stainless steel having a length of 20 cm, and this connecting shaft may have a significant effect on the overall efficiency of the pump while transmitting the rotational power of the driving motor (400) to the impeller (200).

Meanwhile, the extension pipe (300) according to the present invention should be designed to have sufficient strength and rigidity so as to be able to reliably transmit the rotational power of the driving motor (400) to the impeller (200), and therefore, the extension pipe (300) may be manufactured from a material that is a solid material, such as metal, for example, stainless steel or iron.

In addition, the extension pipe (300) according to the present invention must be precisely aligned along the center of the drive shaft, thereby providing a straight path between the motor and the impeller (200), and can be provided with sufficient strength to effectively transmit the rotational power of the drive motor (400) to the impeller (200) without axial displacement or distortion.

An impeller (200) according to one embodiment of the present invention includes a main blade (211) that generates a main flow of fluid, and may include a main rotating plate (210) that is fitted and fixed to an extension pipe (300) so that the main blade (211) can rotate.

The main wing (211) according to the present invention plays a role in controlling and accelerating the flow of fluid. The main wing (211) has a curved shape, and this curved shape can optimize the flow of fluid and improve the overall performance of the pump. In addition, since the performance and efficiency of the main wing (211) according to the present invention can vary depending on various factors such as the selection of material, size, shape, and position, it is preferable to manufacture it using high-strength stainless steel so that it can exhibit excellent performance even in high-temperature, high-pressure, and highly corrosive environments.

The main rotation plate (210) according to the present invention supports the main side blade (211) and is connected to an extension pipe (300) to enable rotation of the impeller (200). The main rotation plate (210) rotates together with the main side blade (211) to move the fluid from inside the pump to the pump outlet. The main rotation plate (210) can be manufactured from a material with excellent rigidity and durability, such as stainless steel or bronze.

That is, the impeller (200) of the present invention includes the main side blade (211) and the main rotating plate (210), thereby enabling effective movement of the fluid and providing stable performance even under various operating conditions. This configuration ensures high efficiency and long life of the pump, and can satisfy various operating conditions required in a wide range of industrial applications.

An impeller (200) according to one embodiment of the present invention includes an auxiliary vane (221) that generates an auxiliary flow of fluid, and may include an auxiliary rotating plate (220) that is fitted and fixed to an extension pipe (300) so that the auxiliary vane (221) can rotate.

The auxiliary vane (221) according to one embodiment of the present invention performs a similar function to the main vane (211), but plays an auxiliary role. That is, the auxiliary vane (221) assists the main fluid flow, reduces flow irregularity, and improves the overall performance and efficiency of the pump. Meanwhile, the auxiliary vane (221) according to the present invention plays an important role in optimizing the performance and efficiency of the impeller (200), and its performance and efficiency may vary depending on various factors such as material, size, shape, and position. Meanwhile, the auxiliary vane (221) may be manufactured from high-strength stainless steel, thereby enabling it to exhibit excellent performance even in a high-temperature, high-pressure, and highly corrosive environment.

In one embodiment of the present invention, an auxiliary rotating plate (220) supports an auxiliary vane (221) and is connected to an extension pipe (300) to enable rotation of the impeller (200). The auxiliary rotating plate (220) according to the present invention rotates together with the auxiliary vane (221) to move the fluid from the inside of the pump to the pump outlet. The auxiliary rotating plate (220) can be made of stainless steel or bronze, which have excellent rigidity and durability, and can thereby exhibit excellent performance even in high temperature, high pressure, and highly corrosive environments.

That is, the impeller (200) of the present invention includes such auxiliary blades and auxiliary rotating plate (220), thereby enabling effective movement of fluid and providing stable performance even under various operating conditions. This configuration ensures high efficiency and long life of the pump, and can satisfy various operating conditions required in a wide range of industrial applications.

According to one embodiment of the present invention, the auxiliary turntable (220) can be formed to be rotatable so as to be positioned in a first state in which the main wing (211) and the auxiliary wing (221) overlap while the main turntable (210) is fixed, and in a second state in which the main wing (211) and the auxiliary wing (221) do not overlap.

In the first state, the main blade (211) and the auxiliary blade (221) overlap each other, thereby enhancing the flow of the fluid. This state is particularly useful in situations where the pressure of the fluid is high or the flow must be strong. As the auxiliary rotary plate (220) rotates synchronously with the main rotary plate (210), the main blade (211) and the auxiliary blade (221) overlap each other, resulting in the fluid passing through the pump more quickly.

For example, in situations where the output of the pump must be increased, particularly when moving high-pressure fluid or when rapid fluid movement is required, the auxiliary turntable (220) may be positioned at a 0-degree angle relative to the main turntable (210) so that the main blade (211) and the auxiliary blade (221) completely overlap each other, and in this case, the pump can move about 50% more fluid than the default setting, thereby increasing the output of the pump.

In the second state, the main wing (211) and the auxiliary wing (221) do not overlap, so the fluid flow is relatively weak. This state is useful in situations where the fluid pressure is relatively low or the flow must be weak. When the auxiliary rotary plate (220) rotates at a certain angle with respect to the main rotary plate (210) so that the main wing (211) and the auxiliary wing (221) are separated from each other, the fluid flow is relatively reduced as a result.

For example, in situations where the output of the pump must be reduced, particularly when moving low-pressure fluids or when slow fluid movement is required, the auxiliary turntable (220) can be rotated at a 90-degree angle to separate the main blade (211) and the auxiliary blade (221), and at this time, the pump can move about 50% less fluid than the default setting, thereby reducing the output of the pump.

In this way, the auxiliary rotary plate (220) according to one embodiment of the present invention controls the flow of fluid by adjusting the relative positions of the main blade (211) and the auxiliary blade (221), thereby adjusting the output of the pump to suit various working conditions. This function expands the range of use of the pump and enables it to adapt to various fluid processing requirements.

A pump according to one embodiment of the present invention may include a sensor unit positioned inside a suction port to measure the flow rate of a suctioned fluid and a rotation control unit to control the rotational state of an auxiliary rotation plate (220).

Meanwhile, when the rotation control unit controls the rotation of the auxiliary rotation plate (220), if the main rotation plate (210) and the auxiliary rotation plate (220) share the same axis, the auxiliary rotation plate (220) can be controlled to a fixed angle even while the main rotation plate (210) rotates by using a clutch or gear mechanism designed to rotate independently.

Meanwhile, in cases where the main rotation plate (210) and the auxiliary rotation plate (220) have different rotation axes according to requirements, each rotation plate can independently control the operation of each motor and gear that are driven independently, thereby individually controlling the rotation of the main rotation plate (210) and the auxiliary rotation plate (220), thereby controlling the fixed angle.

Meanwhile, the rotation control unit according to the present invention controls the auxiliary rotation plate (220) to be positioned in the second state when the flow rate is measured within a preset first numerical range from the sensor unit, and can control the auxiliary rotation plate (220) to be positioned in the first state when the flow rate is measured within a preset second numerical range higher than the first numerical range.

That is, the rotation control unit according to the present invention controls the rotation state of the auxiliary rotation plate (220) in response to a signal from the sensor unit, and this control can be performed mainly according to the flow rate of the fluid. Meanwhile, the sensor unit is located inside the suction port and measures the flow rate of the suctioned fluid in real time, and this measured value is transmitted to the rotation control unit, and the rotation control unit can adjust the rotation state of the auxiliary rotation plate (220) based on this information.

For example, assuming that the first numerical range is 0.5 m/s to 1 m/s, when the flow rate is measured within this range, the rotation control unit controls the auxiliary rotation plate (220) to be positioned in the second state, that is, in a state where the main blade (211) and the auxiliary blade (221) do not overlap, thereby enabling the pump to move the fluid at a slower speed in a working situation requiring low pressure or more detailed fluid control, thereby improving the efficiency of the control.

On the other hand, assuming that the second numerical range is 1 m/s or more, if the flow rate is measured within this range, the rotation control unit controls the auxiliary rotation plate (220) to be positioned in the first state, that is, in a state where the main blade (211) and the auxiliary blade (221) are completely overlapped, and through this, the pump can move the fluid at a faster speed in a situation where high pressure or rapid fluid movement is required, thereby improving the efficiency of the control.

According to one embodiment of the present invention, the rotation control unit can control the auxiliary rotation plate (220) to rotate by a preset angle whenever the flow rate of the fluid becomes slower than a preset interval range, with the state where one end of the main wing (211) and one end of the auxiliary wing (221) overlap each other as a reference angle, so that one area of the auxiliary wing (221) protrudes.

That is, the rotation control unit according to one embodiment of the present invention can precisely control the rotational motion of the auxiliary vane (221) according to the flow rate of the fluid so that when the flow rate decreases, the auxiliary rotation plate (220) can be rotated so that the auxiliary vane (221) protrudes. For example, assuming that the preset interval range is from 0.5 m/s to 1 m/s, whenever the flow rate of the fluid becomes slower than this range, the rotation control unit controls the auxiliary rotation plate (220) to rotate so that one area of the auxiliary vane (221) protrudes. At this time, the protruding angle is determined according to the preset angle, and the preset angle can be, for example, 15 degrees.

That is, when the flow rate decreases from 1 m/s to 0.5 m/s, the auxiliary rotating plate (220) is controlled to rotate so that one area of the auxiliary blade (221) protrudes 15 degrees, and this protruding motion controls the flow of the fluid to slow down.

Furthermore, when the flow rate is reduced by an additional 0.5 m/s, the auxiliary rotating plate (220) is controlled to rotate again by 15 degrees so that one area of the auxiliary vane (221) protrudes a total of 30 degrees, and in this way, the flow of the fluid can be controlled to be further slowed down.

In this way, the rotation control unit performs angle adjustment based on the state in which one end of the main wing (211) and one end of the auxiliary wing (221) overlap, so that the fluidity of the pump can be controlled according to the flow rate of the fluid. Such detailed control can adjust the speed and direction of the fluid in various ways, thereby improving the operating efficiency of the pump and the precision of the fluid treatment process.

Meanwhile, the rotation control unit according to the present invention can derive the rotation angle of the auxiliary rotation plate (220) through mathematical expression 1 and control the rotation angle of the auxiliary rotation plate (220) corresponding to this.

[Mathematical Formula 1]

In the above mathematical expression 1, a represents a rotation angle derived from the auxiliary rotary plate (220) by the rotation control unit, v represents the flow velocity (m/s) at the suction port measured by the sensor unit, A represents the total cross-sectional area (cm²) of the auxiliary blade (221), w represents the total weight (g) of the auxiliary blade (221), p represents the density of the fluid (g/cm³), and k represents the temperature (K) of the fluid.

For example, if v is 1 m/s, A is 200 cm², w is 500 g, p is 1 g/cm³, and k means 273, then a derived from mathematical expression 1 is 4.5, that is, the rotation control unit can be made to rotate the rotation angle of the auxiliary rotation plate (220) by 4.5 degrees to control the flow of the fluid.

Meanwhile, the rotation control unit according to the present invention can control the power supplied to the drive motor (400) to adjust the rotation speed of the drive motor (400) to suit various situations. To be more specific, the rotation speed of the drive motor (400) can be derived through the following mathematical expression 2, and the rotation control unit can control the power supply of the drive motor (400) corresponding thereto. Through this, the power of the drive motor (400) can be controlled so that the flow rate of the fluid can be maintained constant in various situations.

[Mathematical formula 2]

In the above mathematical expression 2, R represents the rotation speed (rpm) of the driving motor (400), R ₀ represents the initial rotation speed (rpm) when no fluid is introduced into the driving motor (400), a represents the rotation angle of the auxiliary rotating plate (220) derived by the rotation control unit through [mathematical expression 1], H represents the maximum output (kw) of the driving motor (400), and d represents the volume (m³) of the space capable of accommodating the fluid within the housing (100) of the pump.

That is, an appropriate rotation speed is derived based on the accommodation space and density inside the drive motor (400) and the housing (100), and the rotation control unit controls the power supplied to the drive motor (400) to maintain the rotation speed, thereby enabling more stable operation of the pump.

Although the present invention has been described with specific details such as specific components and limited examples and drawings, these have been provided only to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and those with common knowledge in the field to which the present invention pertains can make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the described embodiments, and all things that are equivalent or equivalent to the claims described below as well as the same are included in the scope of the idea of the present invention.

10: Pump
100: Housing
110: Inlet
120: exhaust port
200: Impeller
210: Main Rotation Plate
211: Main wing
220: Auxiliary turntable
221: Auxiliary Wing
300: Extension tube
400: Drive motor

Claims (2)

In industrial fluid flow control pumps,
A housing having an intake port formed on one side and an exhaust port formed on the other side;
An impeller rotatably provided inside the housing to generate a flow of fluid from an inlet to an outlet;
A drive motor including a drive shaft; and
It includes an extension pipe that connects the impeller and the drive shaft to transmit rotational power,
The above impeller
A main rotor plate including a main wing that generates the main flow of fluid and is fitted and fixed to the extension tube so that the main wing can rotate; and
It includes an auxiliary blade that generates an auxiliary flow of fluid, and an auxiliary rotating plate that is fitted and fixed to the extension tube so that the auxiliary blade can rotate;
The above auxiliary turntable
The main rotor plate is formed so as to be rotatable in a first state where the main wing and the auxiliary wing overlap, and a second state where the main wing and the auxiliary wing do not overlap, while the main rotor plate is fixed.
It includes a sensor unit located inside the suction port to measure the flow rate of the fluid being sucked; and a rotation control unit that controls the rotation state of the auxiliary rotation plate;
The above rotation control unit
When the flow rate is measured within a preset first numerical range from the sensor unit, the auxiliary rotation plate is controlled to be positioned in the second state, and when the flow rate is measured within a preset second numerical range higher than the first numerical range, the auxiliary rotation plate is controlled to be positioned in the first state.
An industrial fluid flow control pump characterized in that the rotation control unit controls the auxiliary rotary plate to rotate by a preset angle whenever the fluid flow rate becomes slower than a preset interval range, with the state where one end of the main blade and one end of the auxiliary blade overlap as a reference angle, so that one area of the auxiliary blade protrudes. delete