KR20130062705A - Rotor assembly of self priming pump - Google Patents

Rotor assembly of self priming pump Download PDF

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Publication number
KR20130062705A
KR20130062705A KR1020110129114A KR20110129114A KR20130062705A KR 20130062705 A KR20130062705 A KR 20130062705A KR 1020110129114 A KR1020110129114 A KR 1020110129114A KR 20110129114 A KR20110129114 A KR 20110129114A KR 20130062705 A KR20130062705 A KR 20130062705A
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KR
South Korea
Prior art keywords
casing
self
rotating body
priming pump
pump
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Application number
KR1020110129114A
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Korean (ko)
Inventor
조길래
Original Assignee
현대중공업 주식회사
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Priority to KR1020110129114A priority Critical patent/KR20130062705A/en
Publication of KR20130062705A publication Critical patent/KR20130062705A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A rotator assembly of a self-priming pump is provided to form a vacuum state in the inside of a casing by including a plurality of rotators and to improving a vacuum force. CONSTITUTION: A rotator assembly of a self-priming pump comprises a casing(100), a driving unit(200), and a pair of rotators. An inlet pipe and an outlet pipe are formed in one side and the other side of the casing. The driving unit installed in one side of the casing includes a driving shaft(220) and a driving motor(210). The rotators are rotated by the power generated by the driving unit and arranged inside the casing to be engaged vertically. The outer periphery of the driving unit maintained a sealed state by being closely adhered to the inner periphery of the casing. The outer periphery of the rotator is formed into a concavo-convex which is rounded along the outer periphery of the rotator. The rotators arranged vertically are joined so that the concavo-convex portions thereof are engaged.

Description

Rotor assembly of self priming pump

The present invention relates to a rotary assembly of a self-priming pump, and more particularly, to a rotary assembly of a self-priming pump that maximizes suction capacity by increasing the vacuum force in the casing by plural rotating bodies.

Generally, a pump is a device that transfers a fluid such as a liquid or gas to a specific place through a pipe by a pressure action, or pumps a fluid in a low pressure container into a high pressure container through the pipe. It is widely used in places where fluids are used, from farming, rural, mines, civil engineering works, factories, and homes. It is widely used not only for water but also for transportation of special fluids such as petroleum, various chemicals or pulp, viscous sludge, etc. It is used.

These pumps can be categorized into industrial pumps, chemical pumps, and domestic pumps for their purposes, and structurally, various types such as reciprocating pumps, rotary pumps, centrifugal pumps, axial pumps, friction pumps, submersible pumps, etc. It can be classified as a pump.

The driving principle of the centrifugal pump is a pump using the principle of generating pressure in the fluid by applying centrifugal force generated when the impeller 10 is rapidly rotated to the fluid, as shown in FIG. 1. The casing 20 does not form a sealed structure.

Due to the characteristics of such a structure, the centrifugal pump has the advantage of waterproofing a large flow rate, but there is a disadvantage that the flow rate is drastically reduced when the waterproof pressure is increased.

Of course, it is possible to increase the pumping capacity by additionally installing a separate suction device in the centrifugal pump, there is a problem that the removal of the suction device to the centrifugal pump is cumbersome and the size of the device is not easy to transport and storage.

Korea Utility Model Registration 20-0442699

The present invention has been made to solve the above problems, the object of the present invention is to maximize the self-absorption capacity, but the plurality of rotating bodies in the casing is rotated to rotate the self-absorption capacity of the self-priming pump It is to provide a rotor assembly.

The present invention to achieve the above object, the casing is formed in the inlet pipe and the discharge pipe respectively on one side and the other side; a drive unit is installed on one side of the casing, including a drive shaft and a drive motor; by the power generated from the drive unit Rotated, the upper and lower engagement in the casing, the outer peripheral surface is in close contact with the inner circumferential surface of the casing is configured to include a pair of rotating body: Containing, the outer circumferential surface of the rotating body, rounded irregularities along the outer circumferential surface ( Iii), the upper and lower rotary bodies are provided to provide a rotary assembly of the self-priming pump, characterized in that the uneven portion is engaged with each other.

At this time, the rotating body, it is preferable that the tricycle form extending in three directions from the center of the drive shaft is coupled.

In addition, the surface of the rotating body is preferably rubber coated.

Rotor assembly of the self-priming device according to the present invention has the following effects.

By providing a plurality of the rotating bodies, the vacuum state in the casing can be made quickly, and the vacuum force becomes high.

Accordingly, there is an effect that can maximize the self-absorption capacity.

1 is a perspective view showing a rotating body assembly of the centrifugal pump
Figure 2 is an exploded perspective view showing a rotating assembly of a self-priming pump according to a preferred embodiment of the present invention
Figure 3 is a perspective view showing a rotating body of the rotating assembly of the self-priming pump according to the preferred embodiment of the present invention
Figure 4 is a side cross-sectional view showing a rotating assembly of the self-priming pump according to a preferred embodiment of the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, the rotary body assembly of the self-priming pump according to the preferred embodiment of the present invention will be described with reference to FIGS. 2 to 4.

The rotor assembly of the self-priming pump has a technical feature of maximizing the self-absorption capacity by providing a pair of rotors installed in the casing so as to quickly improve the vacuum state in the casing and improve the vacuum force.

Accordingly, it is possible to maximize the suction height of the self-priming pump.

Rotating assembly of the self-priming pump for this purpose is configured to include a casing 100, the drive unit 200, and the rotating body 300, as shown in FIG.

The casing 100 protects the rotating body 300 and serves as a pipe through which water is sucked and discharged.

The shape of the casing 100 is not limited, but is preferably elliptical as shown in FIG. 2.

The casing 100 has a predetermined space formed therein, an inlet pipe 110 is formed at one side of the casing 100, and a discharge tube 120 is formed at the other side of the casing 100.

At this time, the inner space of the casing 100 is made of the size of the space that can be installed to rotate the rotating body 300 to be described later, up and down.

In addition, the inflow pipe 110 and the discharge pipe 120 respectively formed on both sides of the casing 100 communicate with the inside of the casing 100 and are installed to be located in a straight line.

At this time, the front surface of the casing 100 is made in an open state, and a cover 130 is provided to shield the opened front surface.

In this case, although not shown, the structure coupled to the front surface of the cover 130 and the casing 100 may be any structure that can firmly maintain the airtightness of the inside of the casing 100.

Then, the shaft hole 140 is formed on the upper back of the casing (100).

The shaft hole 140 is a through hole for shaft coupling of the drive shaft of the drive unit to be described later and the upper rotating body of the rotating body 300 installed in the casing 100.

At this time, it is obvious that airtightness should be maintained between the driving shaft passing through the shaft hole 140 and the shaft hole 140.

Next, the driving unit 200 generates power to rotate the rotating body 300 installed in the casing 100, and includes a driving motor 210 and a driving shaft 220.

At this time, the drive shaft 220 of the drive unit 200 is inserted into the shaft hole 140 formed in the casing 100 is coupled to the shaft 300, which will be described later.

Next, the rotating body 300 serves to introduce and discharge water as much as the volume change between the casing 100 and the rotating body 300 generated by two or more blade rotations which rotate in engagement with each other.

Rotating body 300 is installed in the casing 100, it is preferable to be provided in a pair to be coupled up, down.

At this time, the outer circumferential surface of the rotating body 300 and the inner circumferential surface of the casing 100 are in close contact with each other such that airtightness is achieved between the rotating body 300 and the casing 100.

The rotating body 300 is rotated by the power generated from the driving unit 200, the outer peripheral surface of the rotating body 300 is formed to form rounded irregularities (凹凸) along the outer peripheral surface.

At this time, the rotating body 300 is preferably made of a triangular shape having wings 310 extending in three directions with respect to the center of the shaft is coupled.

That is, the wing 310 is a protrusion and is formed between the wing 310 and the wing 310 as a main portion.

As shown in Figure 2, the combination of the rotating body made in this way, a pair of the rotating body 300 is engaged up and down, the lower rotating body 300, the blade 310 is the upper rotating body 300 Coupling in close contact with the recess.

At this time, the rotating body 300 coupled to the drive shaft 220 may be both the upper rotating body 300 and the lower rotating body 300, but for convenience of description as shown in Figure 3 the upper rotating body 300 ) Will be described with an example in which the drive shaft 220 is coupled.

On the other hand, it is preferable that the surface of the rotating body 300, especially the outer peripheral surface is rubber coated.

This is to increase the sealing force between the pair of the rotating body 300, and to increase the sealing force between the rotating body 300 and the casing 100.

Hereinafter, the coupling and the action of the self-priming pump assembly having the above-described configuration will be described.

The pair of rotors 300 is disposed in the casing 100.

At this time, the rotating body 300 is positioned to be engaged up and down, and is installed in close contact with each other so that the rotating body 300 and the rotating body 300 and the casing 100 are hermetically maintained.

Thereafter, the cover 130 is also coupled to the front of the casing 100 so that the airtight inside the casing 100 is maintained.

Next, the drive shaft 220 of the drive unit 200 is axially coupled to the upper rotating body 300 through the shaft hole 140 formed in the upper back of the casing (100).

After the coupling is completed as described above, the self-priming pump including the rotary body assembly of the self-priming pump is moved to a position to be sucked up, and then formed in the inlet pipe 110 and the discharge pipe 120 respectively formed on both sides of the casing 100. Connect the hoses respectively.

Thereafter, when the driving unit 200 is driven, the upper rotating body 300 is rotated by the driving shaft 220, and the lower rotating body 300 also rotates while interlocking with the upper rotating body 300.

At this time, the inside of the casing 100 is in a vacuum state by the rotation of the rotating body 300, the suction force is increased as the suction is made in the vacuum state.

In particular, due to the rotation of the pair of rotors 300, the vacuum speed in the casing 100 is made faster, the self-sufficiency can be doubled.

Applicant has carried out an experiment comparing the suction assembly and the rotating assembly of the self-priming pump according to the present invention and the conventional centrifugal pump, the contents of the experimental results are as follows.

<1-1. Comparison of the waterproof performance of the centrifugal pump and the self-priming pump according to the present invention>

The internal working fluid used for the test was water at room temperature, and the absorption height was 3 m to allow stable operation in consideration of the wicking performance of the centrifugal pump.

The test method is to connect the test pump to a waterproof pipe equipped with a pressure regulating valve and a flow meter, operate the engine at maximum output to fix the pump rpm to the maximum, and operate the pressure regulating valve to unload the waterproof pressure of the pump. The test was performed up to 20 kg / cm 2 in increments of 2 kg / cm 2 in the state.

The measurement of the waterproof amount was measured to 0.1L unit using the electronic flowmeter installed in the waterproof pipe.

<1-2. Results for Comparison of Waterproofing Performance>

Since there was no difference in the waterproof capacity at the no-load waterproofing of the pumps used in the comparison test, it was not meaningful to compare the simple waterproof flow rate.

In the case of centrifugal pumps, the water resistance began to decrease as the water pressure increased under no load, and the pressure began to decrease rapidly after 4 kg / cm 2 .

It was not possible to increase the pressure above 8.5 kg / cm 2 and the rate of waterproofing was 73% when the pump pressure was 8 kg / cm 2 .

In the case of the self-priming pump, as the waterproof pressure was increased, a small amount of waterproof was decreased, and even if the pressure was increased to the final 20 kg / cm 2 , the flow rate reduction rate was about 10%.

<1-3. Waterproofing Graph According to Pressure Change>

Figure pat00001

<2-1. Comparison of Water Supply Performance of Centrifugal Pumps and Suction Pumps According to the Present Invention>

In the case of the water distance comparison test, the pump was operated under the same operating conditions as the waterproof performance test, and a commercial 40A fire hose was connected to the discharge side of the pump to measure the water resistance for each 60 m section.

 <2-2. Comparison of Water Supply Performance between Centrifugal Pumps and Suction Pumps According to the Present Invention>

The fluid transferred by the pump causes pressure loss due to internal friction of the hose.

This acts as a load on the engine driving the pump, and as the hose length becomes longer, the waterproof amount of the pump decreases.

In case of centrifugal pump, the flow rate of 550 L / min is decreased when 1km is sent to the 40A fire hose, which shows 84% of the maximum water resistance.

On the other hand, in the case of the self-priming pump, the flow rate of 135 L / min was confirmed, and the rate of flow reduction was 40%.

<2-3. Water resistance graph by water supply distance>

Figure pat00002

<3-1 Comparison of the wicking performance of the centrifugal pump and the self-priming pump according to the present invention>

To compare the suction capacity of the pump, install a pressure regulating valve on the pump suction pipe side and operate the pressure regulating valve while operating the pump at maximum output to increase the negative pressure or vacuum pressure on the pump suction side. The amount of waterproofing was measured every mmHg.

<3-2 Comparison of the wicking performance of the centrifugal pump and the self-priming pump according to the present invention>

The suction performance of the pump refers to the pump's ability to draw water and is achieved by creating a vacuum on the pump suction side.

In the case of centrifugal pumps, there is no self-absorbing performance, so the vacuum pump must be operated to draw water up to the pump inlet position.

When the vacuum pressure (mmHg) was converted to the suction height (m), the flow rate of the centrifugal pump was reduced by nearly 50% at the suction height of 8 m. In the case of the self-priming pump, the flow rate was reduced by less than 10% to the suction height of 9 m.

<3-3. Graph of Water Resistance According to Suction Height>

Figure pat00003

As can be seen from the above experimental results, the self-priming pump is applied to the rotary assembly of the self-priming pump according to the present invention does not have a sudden decrease in waterproof amount, such as a centrifugal pump when the water pressure increases, the water repellent performance of the self-priming pump is more than 1km The waterproofing rate was reduced to 1/2 of the centrifugal pump. In addition, the self-priming pump showed a 1/5 waterproofing reduction rate compared to the centrifugal pump in the 8m suction chamber.

As described above, the rotary body assembly of the self-priming pump according to the present invention has a technical feature capable of maximizing suction ability by configuring a pair of rotary bodies to be kept airtight in a casing.

Accordingly, the pumping efficiency can be improved to enable high flow rate waterproofing at high pressure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

100: casing 110: inlet pipe
120: discharge tube 130: cover
140: shaft hole 200: drive unit
210: drive motor 220: drive shaft
300: rotor 310: wing

Claims (3)

A casing in which an inlet pipe and a discharge pipe are formed at one side and the other side, respectively;
A driving unit installed at one side of the casing and including a driving shaft and a driving motor;
Is rotated by the power generated from the drive unit, disposed in up and down engagement in the casing, the outer circumference is in close contact with the inner circumferential surface of the casing is configured to include a pair of rotating bodies:
The outer circumferential surface of the rotating body is formed with rounded irregularities along the outer circumferential surface,
The rotating body disposed up and down is a rotating assembly of the self-priming pump, characterized in that the uneven portion is coupled to each other. The method of claim 1,
The rotating body includes:
Rotor assembly of the self-priming pump, characterized in that the tricycle form including a wing extending in three directions from the center coupled to the drive shaft. 3. The method according to claim 1 or 2,
Rotating assembly of the self-priming pump, characterized in that the surface of the rotor is rubber coated.
KR1020110129114A 2011-12-05 2011-12-05 Rotor assembly of self priming pump KR20130062705A (en)

Priority Applications (1)

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KR1020110129114A KR20130062705A (en) 2011-12-05 2011-12-05 Rotor assembly of self priming pump

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KR1020110129114A KR20130062705A (en) 2011-12-05 2011-12-05 Rotor assembly of self priming pump

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