KR101408649B1 - Pump including Auto Air Ventilation - Google Patents

Pump including Auto Air Ventilation Download PDF

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Publication number
KR101408649B1
KR101408649B1 KR1020140024842A KR20140024842A KR101408649B1 KR 101408649 B1 KR101408649 B1 KR 101408649B1 KR 1020140024842 A KR1020140024842 A KR 1020140024842A KR 20140024842 A KR20140024842 A KR 20140024842A KR 101408649 B1 KR101408649 B1 KR 101408649B1
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KR
South Korea
Prior art keywords
pump
air
pump case
discharge
air discharge
Prior art date
Application number
KR1020140024842A
Other languages
Korean (ko)
Inventor
조민태
Original Assignee
주식회사 두크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 두크 filed Critical 주식회사 두크
Priority to KR1020140024842A priority Critical patent/KR101408649B1/en
Application granted granted Critical
Publication of KR101408649B1 publication Critical patent/KR101408649B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • 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

[0001] The present invention relates to a pump having an automatic air discharge structure, and its object is to provide a pump that can discharge air in a pump out of a pump using the pressure of a fluid during driving of the pump without requiring manual operation or use of an electric device And to provide a pump having an automatic air vent structure. To this end, the present invention provides a pump including a driving part, a pump case accommodating therein at least one impeller rotated by a power transmitted from the driving part, and having an inlet and an outlet, The pump case has a first end connected to an upper end of the pump case and configured to generate a flow path through which air remaining in the pump case is discharged. And the other end of the air discharge pipe connected to the discharge flow path so as to have the other end at which the low pressure is formed.

Description

[0001] The present invention relates to a pump having an automatic air discharge structure,

The present invention relates to a pump, and more particularly, to a pump that is capable of discharging air in a pump to a discharge pipe of a pump by using the pressure of fluid during driving of the pump without requiring manual operation or use of an electric device To a pump having an exhaust structure.

Generally, the pump is provided with an air discharge device, and the air discharge device discharges the air remaining in the pump to the outside to perform an operation of maintaining the optimum discharge pressure when the fluid is pumped.

One example of the air discharging device is disclosed in Laid-Open Patent Publication No. 1998-0009951.

The air discharge device disclosed in the above invention is configured such that the air outlet formed by the button case mounted on the air discharge port of the pump case is opened by the pushing operation of the push button and the air remaining in the pump is discharged to the outside .

When it is determined that the air discharge is required, the user must directly press the push button to manually open the air outlet while driving the pump, so that the user does not recognize an appropriate time when the air discharge is required If not, there is a problem that the efficiency of the pump is lowered due to the air remaining inside the pump.

On the other hand, Registration Utility Model No. 0380828 discloses an air venting device of a different structure.

The air discharging device disclosed in the above-mentioned invention is capable of automatically discharging the air stagnated inside the pump, wherein the air discharging device is installed on an upper base coupled to the upper side of the pump body, And an opening / closing pin provided on an air passage of the housing. The opening / closing pin may be provided in the housing.

In the air discharging device having such a configuration, the opening and closing pins are connected to each other through the lever to interlock with the up and down movement of the mouth, and the opening / closing pin moves up and down to open or close the air passage of the housing, It has a structure to discharge automatically.

However, since the air discharging device having the above-described structure must install an air discharging device including a bucket and a housing opening / closing pin on the pump body, the difficulty of manufacturing the pump is increased and the access to the air discharging device located inside the pump body There is a problem that maintenance is difficult.

On the other hand, Japanese Patent Registration No. 1071558 discloses an automatic air discharge device for a booster pump system.

The automatic air discharge device disclosed in the above-mentioned invention controls the solenoid valve attached to the upper end of the pump casing to check the discharge pressure and the output current and to discharge the air in the suction pipe and the pump to the outside when the low- Lt; / RTI >

However, the automatic air discharging apparatus as described above requires the use of a sensor for checking the discharge pressure and the output current, complicates the control system of the pump, and requires the use of a separate electric device such as a solenoid valve.

Open Patent Publication No. 1998-0009951 (published on April 30, 1998) Registration Utility Practice Bulletin No. 0380828 (Notice of April, 2005) Patent Registration No. 1071558 (issued October 10, 2011)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a pump capable of discharging air in a pump out of a pump by using a pressure of a fluid when driving a pump without requiring manual operation or use of an electric device The pump having an automatic air discharge structure.

According to an aspect of the present invention, there is provided a driving apparatus including a driving unit, at least one impeller rotatable by a driving force transmitted from the driving unit, a pump having an inlet and an outlet, The pump includes a pump case and a pump case. The pump case is connected to an upper end of the pump case so as to communicate with the upper end of the pump case. And an air discharge pipe connected at one end to the discharge flow path so as to have another end portion at which relatively low pressure is formed by the flow of the fluid flowing in the discharge flow path. Lt; / RTI >

Preferably, the other end of the air discharge pipe extends in the same direction as the flow direction of the fluid flowing through the discharge flow path from the inside of the discharge flow path, and the other end end opens in the flow direction of the fluid.

Meanwhile, the air discharge pipe may extend from the upper end of the pump case to the discharge flow path through the interior of the pump case.

The air discharge pipe extends from the inside of the upper end portion of the pump case to the outside of the pump case, and then the air discharge pipe extends from the inside of the upper end portion of the pump case to the discharge flow path, And may be configured to extend to the discharge flow path.

The air discharge pipe may further include an on-off valve for interrupting the flow path of the air discharge pipe.

Meanwhile, the other end of the air discharge pipe may be configured to have a trumpet-like structure.

Meanwhile, the pump may be configured as a standing type multi-stage pump in which a plurality of impellers are stacked.

The air discharge pipe may include a first pipe member disposed in a space provided at an inner upper end portion of the pump case and having a plurality of air inlet holes formed in the annular pipe; A plurality of second tubular members extending from the inner side of the pump case through the interior of the pump case with an upper end connected to the first tubular member and flowing air introduced into the first tubular member to the lower portion of the pump case; A third tubular member comprising an annular pipe interconnecting the lower ends of the plurality of second tubular members; And a fourth tubular member extending from the third tubular member to the inside of the discharge flow path.

According to the present invention having such characteristics as described above, relatively low pressure is formed at the discharge side end of the air discharge pipe at the time of driving the pump due to the flow of the fluid flowing through the discharge flow path, And the air is discharged naturally through the flow of the fluid flowing by the driving of the pump. Therefore, no special operation is required, and a separate driving source such as an electric device So that the convenience of manufacturing and maintenance can be improved.

1 is a sectional view of a pump having an automatic air discharge structure according to an embodiment of the present invention,
2 to 4 are sectional views of a pump having an automatic air venting structure according to another embodiment of the present invention,
5 is a sectional view showing the detailed structure of the other end of the air discharge pipe according to the present invention,
6 is a cross-sectional view showing another detailed structure of the other end of the air discharge pipe according to the present invention,
7 is a cross-sectional view of a pump to which an air discharge pipe of another structure is applied as a pump according to the present invention,
8 is a perspective view of an air discharge pipe applied to the pump shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a sectional view of a pump having an automatic air discharge structure according to an embodiment of the present invention, FIGS. 2 to 4 are sectional views of a pump having an automatic air discharge structure according to another embodiment of the present invention, FIG. 6 is a sectional view showing another detailed structure of the other end of the air discharge pipe according to the present invention. FIG. 6 is a sectional view showing the detailed structure of the other end of the air discharge pipe according to the present invention.

The pump according to the present invention includes a driving unit 110 made up of a motor and an impeller 130 disposed under the driving unit 110 and rotating to receive power generated from the driving unit 110, And a pump case 120 having a discharge port 122. The configuration of such a basic pump is the same as that of a widely used pump.

In the present invention, when the air discharge structure is formed in the pump having the above-described structure, an air discharge pipe 140 is additionally installed in the pump case 120 so that the upper end portion of the pump case 120 and the discharge passage F, And the like.

For reference, the above-mentioned discharge passage F is a flow passage formed by a discharge port 122 provided in the pump case 120 and a discharge pipe 150 coupled to the discharge port 122, Impellers 130 are stacked in the vertical direction and the fluid introduced into the pump case 120 through the inlet port 121 is sequentially pressurized to a high pressure through the multi-stage impeller 130, and then the discharge port 122 Stage multi-stage pump is shown.

Hereinafter, the air discharge pipe 140 will be described in detail.

The air discharge pipe 140 connects the upper end of the pump case 120 to the discharge passage F to provide a flow path for discharging the fluid remaining in the pump case 120, One end of the air discharge pipe 140 is arranged to communicate with the inner upper end portion of the pump case 120 and the air discharge pipe 140 is connected to the upper end of the air discharge pipe 140, And the other side end extends to the inside of the discharge flow path F. 1, the air discharge pipe 140 is configured to extend from the upper end of the pump case 120 to the discharge passage F through the interior of the pump case 120, And may extend from the inside of the upper end of the pump case 120 to the outside of the pump case 120 and then extend to the discharge passage F as shown in FIG. 2 shows a structure in which the air discharge pipe 140 is protruded from the inside of the upper end of the pump case 120 to the discharge port 122 and the air discharge pipe 140 is connected to the pump case 4, the air discharge pipe 140 is protruded from the inside of the upper end of the pump case 120 to the outside thereof, And is connected to the discharge pipe at a position farther than the inlet of the discharge pipe (150).

In order to smoothly discharge the air in the pump case 120 through the air discharge pipe 140 installed to connect the upper end of the pump case 120 and the discharge passage F, The pressure of the end portion on the side of the discharge flow path F (hereinafter referred to as the "other end portion 140b") to the inlet side end portion (hereinafter referred to as "one end portion 140a") communicating with the inside of the upper end portion of the pump case 120 It is desirable to lower it.

The other end 140b of the air discharge pipe 140 is connected to the discharge passage F through the discharge passage F and the other end 140b of the air discharge pipe 140 is connected to the discharge passage F, Is formed to extend in a direction substantially parallel to the flow direction A of the fluid flowing through the discharge flow path F and the end of the other end portion 140b is formed to have an opening 140c in the flow direction A of the fluid .

According to the structure of the air discharge pipe 140, when the fluid flows through the discharge flow passage F by the driving of the pump, by the fluid flowing at a high speed around the other end portion 140b of the air discharge pipe 140 The inner pressure of the other end portion 140b is decreased. As the inner pressure of the other end portion 140b is reduced, the smooth discharge of air through the air discharge pipe 140 can be induced.

In addition, if the other end portion 140b of the air discharge pipe 140 is formed in a trumpet-like structure gradually expanding with respect to the flow direction A of the fluid (see FIG. 6), the pressure of the other end portion 140b Can be lowered more effectively.

The opening / closing valve 160 may be installed in the air discharge pipe 140 to allow the user to selectively open or close the flow path of the air discharge pipe 140. The on-off valve 160 may be a manual valve operated by a user's manual operation or an automatic valve operated automatically by an electrical signal.

When the impeller 130 is rotated by the rotational force generated by the driving unit 110 and transmitted to the impeller 130, the pump having the automatic air discharge structure according to the present invention, The fluid is introduced into the target space through the discharge port 122 and the discharge pipe 150 after being pushed by the rotating impeller 130.

On the other hand, when air flows into the inside of the pump case 120 due to the construction or maintenance work of the pump, the air remaining in the pump case 120 flows through the pump And moves to the upper portion of the case 120.

The pressure around the opening 140c formed at the other end portion 140b of the air discharge pipe 140 becomes lower as the fluid flows at a higher speed through the discharge passage F by driving the pump, A pressure difference is generated between the one end portion 140a and the other end portion 140b of the discharge pipe 140.

The air that moves to the upper portion of the pump case 120 flows into the one end portion 140a of the air discharge pipe 140 and flows to the other end portion 140b having a relatively low pressure and then flows into the discharge passage F .

The pump having the automatic air discharge structure according to the present invention automatically discharges the air inside the pump case 120 to the outside using the structural characteristics of the air discharge pipe 140 without manual operation by the user or use of the electric device It is possible to simplify the entire structure related to the air discharge compared to the prior art, and there is no need for a separate maintenance work, so that there is an advantage that the convenience of management of the pump can be improved.

FIG. 7 is a sectional view of a pump to which an air discharge pipe of another structure is applied as a pump according to the present invention, and FIG. 8 is a perspective view of an air discharge pipe applied to the pump shown in FIG.

The air discharge pipe 140 includes first and third pipe members 141 and 143 having pipes formed in an annular ring structure so as to uniformly discharge the air remaining in the pump case 120, A second tubular member 142 for interconnecting the tubular members 141 and 143 and a fourth tubular member 144 extending from the third tubular member 143 to the discharge flow path F. [

More specifically, the first pipe member 141 is installed in a space S formed in the pump case 120 to be positioned above the impeller 130, and a plurality of air And an inlet hole 141a.

The second tubular member 142 has an upper end connected to the first tubular member 141 and a lower end connected to the third tubular member 143 so that the air flowing into the first tubular member 141 is passed through the third tubular member 141, (143). The second pipe member 142 is composed of a plurality of pipes and the upper end of the second pipe member 142 is connected to the first pipe member 141 with a predetermined distance therebetween. And extends to the inner lower end of the pump case 120 along the flow path formed in the pump case 120.

The third tubular member 143 is installed to be positioned at an inner lower end of the pump case 120 and is connected to the plurality of second tubular members 142 to receive air flowing through the second tubular member 142 .

The fourth tubular member 144 is installed so as to extend from the third tubular member 143 to the inside of the discharge flow passage F. The fourth tubular member 144 has the same structure as the air discharge tube 140 And extends in the direction substantially parallel to the direction in which the fluid flows inside the flow path F and is opened in the same direction in the flow direction of the fluid.

In the case of a pump to which the air discharge pipe 140 having the above-described structure is applied, air is sucked at various positions on the inner upper end of the pump case 120 and is discharged to the outside. Therefore, There is an advantage that the air inside the pump case 120 can be discharged to the outside more effectively.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Description of the Related Art
110: driving part 120: pump case
121: inlet 122: outlet
130: impeller 140: air discharge pipe
140a: one end 140b: the other end
140c: opening 141: first tube member
142: second tube member 143: third tube member
144: fourth pipe member 150: discharge pipe
160: opening / closing valve

Claims (8)

And a pump case 120 accommodating therein at least one impeller 130 rotated by the power transmitted from the driving unit 110 and having an inlet 121 and a discharge port 122, In the pump,
The pump casing 120 is connected to one end 140a of the pump case 120 at an upper end thereof so as to communicate with the inside of the upper end of the pump casing 120 to form a flow path through which air remaining in the pump casing 120 is discharged. The other end portion 140b is discharged so as to have the other end portion 140b having relatively lower pressure than the one end portion 140a by the flow of the fluid flowing in the discharge path F extending from the discharge port 122 And an air discharge pipe (140) connected to the flow path (F). The method according to claim 1,
The other end 140b of the air discharge pipe 140 extends in the same direction as the flow direction A of the fluid flowing through the discharge passage F from the inside of the discharge passage F, (140c) in the flow direction of the fluid. The method according to claim 1,
Wherein the air discharge pipe (140) extends from the upper end of the pump case (120) to the discharge passage (F) through the interior of the pump case (120). The method according to claim 1,
The air discharge pipe 140 forms a flow path extending from the inside of the upper end of the pump case 120 to the discharge flow path F to discharge air remaining in the pump case 120, Extends from the inside of the upper end of the pump case (120) to the outside of the pump case (120), and then extends to the discharge flow path (F). The method according to claim 1,
Wherein the air discharge pipe (140) is further provided with an on-off valve (160) for interrupting the flow path of the air discharge pipe (140). The method according to claim 1,
Wherein the other end (140b) of the air discharge pipe (140) is extended to a trumpet-type structure. The method according to claim 1,
Wherein the pump is an in-line multi-stage pump comprising a plurality of impellers (130) stacked. The method according to claim 1,
The air discharge pipe 140 includes a first pipe member 141 disposed in a space S provided at an inner upper end of the pump case 120 and having a plurality of air inflow holes 141a formed in the annular pipe;
The first pipe member 141 is connected to an upper end of the first pipe member 141 and extends to the inner lower end of the pump case 120 through the interior of the pump case 120, A plurality of second tubular members (142) flowing into the lower portion of the first tubular member (120);
A third tubular member 143 formed of an annular pipe interconnecting the lower ends of the plurality of second tubular members 142; And
And a fourth tubular member (144) extending from the third tubular member (143) to the inside of the discharge flow path (F) side.
KR1020140024842A 2014-03-03 2014-03-03 Pump including Auto Air Ventilation KR101408649B1 (en)

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KR1020140024842A KR101408649B1 (en) 2014-03-03 2014-03-03 Pump including Auto Air Ventilation

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Application Number Priority Date Filing Date Title
KR1020140024842A KR101408649B1 (en) 2014-03-03 2014-03-03 Pump including Auto Air Ventilation

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KR101408649B1 true KR101408649B1 (en) 2014-06-17

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980009951A (en) * 1996-07-25 1998-04-30 구자홍 Pump air exhaust system
KR200380828Y1 (en) 2005-01-14 2005-04-07 경성엔지니어링 주식회사 Air drain apparatus of pump
KR101071558B1 (en) * 2010-11-30 2011-10-10 화랑시스템(주) Auto air exhaust apparatus for pump system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980009951A (en) * 1996-07-25 1998-04-30 구자홍 Pump air exhaust system
KR200380828Y1 (en) 2005-01-14 2005-04-07 경성엔지니어링 주식회사 Air drain apparatus of pump
KR101071558B1 (en) * 2010-11-30 2011-10-10 화랑시스템(주) Auto air exhaust apparatus for pump system

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