KR20160141067A - Lift control equipment of centrifugal pump - Google Patents

Lift control equipment of centrifugal pump Download PDF

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Publication number
KR20160141067A
KR20160141067A KR1020150074252A KR20150074252A KR20160141067A KR 20160141067 A KR20160141067 A KR 20160141067A KR 1020150074252 A KR1020150074252 A KR 1020150074252A KR 20150074252 A KR20150074252 A KR 20150074252A KR 20160141067 A KR20160141067 A KR 20160141067A
Authority
KR
South Korea
Prior art keywords
discharge
bolt
hole
case member
discharge passage
Prior art date
Application number
KR1020150074252A
Other languages
Korean (ko)
Inventor
김현석
박규진
박상동
최현철
Original Assignee
효성굿스프링스 주식회사
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.)
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Publication date
Application filed by 효성굿스프링스 주식회사 filed Critical 효성굿스프링스 주식회사
Priority to KR1020150074252A priority Critical patent/KR20160141067A/en
Publication of KR20160141067A publication Critical patent/KR20160141067A/en

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    • 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
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid 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

The present invention relates to an air conditioner comprising a case member having a suction portion and a discharge portion, an impeller rotating inside the case member, a cover member configured to form a space portion together with the case member and accommodating the impeller in the space portion, Wherein a through hole is formed in one side of the discharge portion so as to pass through the discharge passage of the discharge portion and a mounting hole is formed in the inner side surface of the discharge passage corresponding to the through hole And a bolt-type orifice portion for adjusting a flow rate of the fluid discharged into the discharge passage is inserted into the through-hole, and is mounted to the mounting hole.
Therefore, the bolt-type orifice portion can be inserted into the discharge passage through the discharge passage on one side of the discharge portion of the case member, so that the pump can be adjusted in height, and the case member is not disassembled, A plurality of bolt-type orifices of different sizes can be inserted to adjust the lift, so that the lift of the pump can be easily adjusted, thereby improving the convenience of the pump lifting operation.

Description

[0001] The present invention relates to a centrifugal pump,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a head adjustment device for a centrifugal pump, and more particularly, to a head adjustment device for a centrifugal pump for controlling the head of a centrifugal pump by adjusting a discharge flow rate of a fluid discharged to a discharge port of the centrifugal pump.

Referring to the prior art described in Korean Utility Model Registration No. 0216337, a pump is a machine that receives energy from another and lifts the fluid to a higher position and presses the fluid to send it. The centrifugal pump, the volute pump, , A gear pump, a vane pump, and a plunger pump. The centrifugal pump is as follows.

In other words, a centrifugal pump is a so-called vortex pump. The pump is a pump that boosts the pressure energy of the fluid by the centrifugal force by the rotation of the impeller, and is used for small flow rate and elevation. It can be divided into a volute pump and a turbine pump. Depending on the shape of the suction port, it can be divided into one suction pump and both suction pumps.

The casing of the centrifugal pump has a helical structure for increasing the pressure and the discharge amount. When the pump is installed, it is conveyed when determining the head of the pump (including the piping loss and the conveying height of the fluid conveyed by the pump) Which is higher than the actual head considering the difference in pipe loss depending on the fluid to be used.

In this case, the change of the head and the discharge amount of the centrifugal pump increases according to the head, and although the actual amount varies depending on the type of the pump, the discharge amount changes by about 10% due to the head difference of about 1M.

1 is a view showing a general centrifugal pump in which an impeller 20 is rotatably installed in a casing 10 and a delivery port 12 is formed on an upper side of the casing 10 to rotate the motor 30 The impeller 20 is rotated and the fluid is transported through the delivery port 12 to the upper side.

In the case of the centrifugal pump, the delivery nozzle of the delivery port 12 is machined to satisfy the slope of the head slope (displacement ratio), but the performance of the pump is sensitively changed according to the nozzle diameter, so that the casing 10 of the centrifugal pump The number of times of disassembling and assembling and machining the dispensing nozzle is 4 to 6 times, which causes a problem that the working time is delayed.

In order to solve this problem, the orifice 40 is welded to the outlet 12 and the SUS-type orifice 40 is welded. However, the orifice 40 is used for adjusting the inclination The user repeatedly carries out the operation of making contact with the delivery port 12 while changing the operation time, which also causes a problem that the operation time is consumed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a discharge device for an internal combustion engine in which a bolt type orifice for partially sealing a discharge flow passage is inserted in a discharge portion of a case member without disassembling a case member of a pump, To adjust the head slope (displacement ratio) of the centrifugal pump by adjusting the rotation angle of the centrifugal pump.

In order to attain the above object, the present invention provides an air conditioner comprising a case member having a suction portion and a discharge portion, an impeller rotating inside the case member, and a case member configured to accommodate the impeller in the space portion, And a rotor having a shaft for rotating the impeller, wherein a through hole is formed through the discharge passage of the discharge portion on one surface of the discharge portion, and a through hole is formed in the discharge portion, Wherein a mounting hole is formed in the inner side surface of the discharge flow passage and a bolt type orifice portion for adjusting the flow rate of the fluid discharged through the discharge flow passage is inserted into the through hole and mounted on the mounting hole. do.

The bolt-type orifice portion may be formed of a plurality of bolt-type orifices, and the plurality of bolt-type orifices are coupled to the through-holes, and a plurality of bolt- And a mounting portion provided at one end of the adjusting portion and mounted on the mounting hole.

The adjusting parts of the plurality of bolt-type orifices may have different diameters, and a fastening protrusion may protrude outward from the other end of the fastening part, a thread may be formed on an outer circumferential surface of the fastening part, A screw groove may be formed in the through hole.

The apparatus for adjusting the head of a centrifugal pump according to the present invention can adjust the head of the pump by inserting a bolt-type orifice portion through the discharge passage into the case member from one side of the discharge portion, thereby disassembling the case member, So that the working time can be shortened and the head can be adjusted by inserting a plurality of bolt type orifices having different sizes, so that the head of the pump can be easily adjusted, thereby improving the convenience of the pump lifting operation.

1 is a front view showing a general centrifugal pump.
FIG. 2 is a view showing a state where an orifice for satisfying the slope of the head change curve is mounted on the delivery port of the centrifugal pump.
3 is a view schematically showing a configuration of a headrest adjusting device of a centrifugal pump according to an embodiment of the present invention.
FIG. 4 is an enlarged view of a state in which a bolt-type orifice portion is inserted into a discharge portion of the case member shown in FIG. 3;
5 is a view schematically showing a state in which a bolt-type orifice constituting a bolt-type orifice portion partially hermetically closes a discharge passage.
Fig. 6 is a graph showing the change in heading according to the size of the bolt type orifice.
7 is a graph showing an efficiency change depending on the size of the bolt type orifice.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

FIG. 3 is a view schematically showing the structure of a headrest adjusting device of a centrifugal pump according to an embodiment of the present invention. FIG. 4 is an enlarged view of a state in which a bolt-type orifice portion is inserted into a discharge portion of the case member shown in FIG. Fig. 5 is a graph schematically showing a state in which a bolt-shaped orifice constituting a bolt-shaped orifice part partially hermetically closes a discharge passage. Fig. 6 is a graph showing a change in a heading according to the size of the bolt- Is a graph showing the efficiency change depending on the size of the bolt type orifice.

3 to 7, a headrest adjusting device 100 of a centrifugal pump according to the present invention includes a case member 110, an impeller 120, a cover member 130, a rotor 140, Type orifice portion 150 as shown in FIG.

The centrifugal pump according to the present invention is a pump for introducing fluid from a suction unit 112 and discharging the fluid to a discharge unit 114. The suction unit 112 for sucking fluid is formed on one surface of the case member 110 The discharge part 114 for discharging the fluid sucked into the suction part 112 is formed on the circumferential surface of the case member 110 so as to be perpendicular to the suction part 112.

A cover member 130 is coupled to the other surface of the case member 110 having the suction unit 112 formed on one surface thereof and a rotating impeller 120 is disposed inside the case member 110. The cover member 130 is coupled to the other surface of the case member 110, A space (not shown) in which the impeller 120 is received is formed inside the case member 110 and the cover member 130.

The impeller 120 provided inside the case member 110 and the cover member 130 is rotated by a rotor 140 provided on the outer side of the cover member 130, And the rotational force is transmitted to the impeller 120 by the shaft 142 connected to the rotor 140. The impeller 120 is rotated by the rotor 140 inside the case member 110 and the cover member 130 to be sucked into the suction unit 112 formed on one surface of the case member 110 The fluid is discharged from the discharging part 114 after rotating the inside of the case member 110 and the cover member 130.

A through hole 114b passing through the discharge passage 114a of the discharge portion 114 is formed on one surface of the discharge portion 114 and an inner portion of the discharge passage 114a corresponding to the through hole 114b A mounting hole 114c is formed on the side surface.

The through hole 114b is formed with a bolt type orifice part 150 for partially sealing the outflow path 114a of the discharge part 114 and controlling the flow rate of the fluid discharged to the discharge path 114 And one end of the bolt-type orifice portion 150 inserted into the through hole 114b is mounted to the mounting hole 114c to partially seal the discharge passage 114a.

The bolt-type orifice 150 is composed of a plurality of bolt-type orifices 152, and the plurality of bolt-type orifices 152 have different sizes, so that the range in which the discharge passage 114a is partially sealed So that the flow rate of the fluid discharged into the discharge passage 114a is varied.

The plurality of bolt type orifices 152 includes a fastening portion 152a, an adjusting portion 152b, and a mounting portion 152c. The fastening portion 152a is a portion that is fastened to the through hole 114b when the bolt type orifice 152 is inserted into the through hole 114b and the adjustment portion 152b is provided at one end of the fastening portion 152a. And at the other end, a fastening protrusion 152d is formed so as to protrude outward. When the bolt-type orifice 152 is inserted into the through hole 114b, the worker uses the working tool to sweep the fastening protrusion 152d and then rotate the fastening portion 152a to the through hole 114b And tightly fastened.

It is preferable that a thread NS is formed on the outer peripheral surface of the fastening portion 152a and a thread groove NH is formed in the through hole 114b. The fastening portion 152a and the through hole 114b are screwed together by the thread NS and the screw groove NH.

The adjusting unit 152b partially closes the discharge passage 114a and each of the adjusting units 152b constituting the plurality of bolt type orifices 152 may have different diameters. Each of the adjusting portions 152b constituting the plurality of bolt type orifices 152 has different diameters so that the range in which the adjusting portion 152b having a different diameter partially seals the discharging flow path 114a is different The operator adjusts the head of the fluid discharged into the discharge passage 114a while replacing the bolt type orifice 152. [

A mounting portion 152c is provided at one end of the adjusting portion 152b and the mounting portion 152c is mounted to a mounting hole 114c formed in the inner side surface of the discharging flow path 114a, And is fixed to the discharge passage 114a together with the discharge passage 152a.

The fluid sucked into the suction unit 112 formed on one surface of the case member 110 is guided by the rotation of the impeller 120 provided inside the case member 110 and the cover member 130, And the cover member 130 and then discharged to the discharge part 114 of the case member 110. The fluid discharged to the discharge part 114 is discharged by the bolt type orifice part 150 Discharge head is adjusted

When the bolt-type orifice 152 is not inserted into the discharge portion 114 and when the bolt-type orifice 152 is replaced, as the diameter of the adjustment portion 152b of the bolt-type orifice 152 changes, The relationship between the flow rate of the fluid supplied to the case member 110 of the centrifugal pump and the lift of the centrifugal pump is as shown in the graph of FIG. 6, and the efficiency of the centrifugal pump according to the flow rate of the fluid is shown in the graph The graph of head and efficiency according to flow rate can be obtained through repeated experiments.

Referring to the graphs shown in FIGS. 6 and 7, the centrifugal pump manufactured in the past can be adjusted to satisfy the specifications of the customer in the discharge part 114 of the case member 110 in order to satisfy customer specifications It is possible to manufacture a centrifugal pump satisfying the customer's specification by inserting the bolt-type orifice 152 while replacing the bolt-type orifice 152, adjusting the lift, and welding the fastening portion 152a to the through hole 114b.

Accordingly, the bolt-type orifice portion 150 can be inserted through the discharge passage 114a from one side of the discharge portion 114 of the case member 110 to adjust the discharge head of the pump to disassemble the case member 110 It is possible to reduce the working time by omitting the disassembling process of the case member 110 and to adjust the head by inserting a plurality of bolt type orifices 152 of different sizes so that the head of the pump can be easily adjusted, The convenience can be improved.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Head adjuster of centrifugal pump 110: Case member
112: suction portion 114: discharge portion
120: impeller 130: cover member
140: rotor 150: bolt type orifice part
152: Bolt type orifice

Claims (4)

A case member having a suction portion and a discharge portion; an impeller rotating inside the case member; a cover member that constitutes a space portion together with the case member and accommodates the impeller in the space portion; The present invention relates to a centrifugal pump having a rotor,
Wherein a through hole is formed on one surface of the discharge portion so as to pass through the discharge passage of the discharge portion, a mounting hole is formed on an inner side surface of the discharge passage corresponding to the through hole,
And a bolt-type orifice portion for adjusting a flow rate of the fluid discharged into the discharge passage is inserted into the through hole and mounted on the mounting hole.
The method according to claim 1,
Wherein the bolt-type orifice portion comprises a plurality of bolt-type orifices,
Wherein the plurality of bolt-
A fastening portion fastened to the through hole,
An adjustment unit provided at one end of the coupling unit and partially adjusting the discharge flow rate of the fluid by sealing the discharge flow channel,
And a mounting portion provided at one end of the adjusting portion and mounted to the mounting hole.
The method of claim 2,
Wherein each of the adjustment parts of the plurality of bolt-type orifices has different diameters,
And a fastening protrusion protruding outward from the other end of the fastening part.
The method of claim 2,
Wherein a screw thread is formed on an outer circumferential surface of the fastening portion, and a screw groove is formed in the through hole.
KR1020150074252A 2015-05-27 2015-05-27 Lift control equipment of centrifugal pump KR20160141067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150074252A KR20160141067A (en) 2015-05-27 2015-05-27 Lift control equipment of centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150074252A KR20160141067A (en) 2015-05-27 2015-05-27 Lift control equipment of centrifugal pump

Publications (1)

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KR20160141067A true KR20160141067A (en) 2016-12-08

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KR1020150074252A KR20160141067A (en) 2015-05-27 2015-05-27 Lift control equipment of centrifugal pump

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016224831A1 (en) 2016-10-27 2018-05-03 Hyundai Motor Company INTEGRATED OPERATING DEVICE FOR A WINDOW PLATE AND A DOOR CURTAIN
KR20180096443A (en) 2017-02-21 2018-08-29 나기호 Centrifugal pump
CN109931281A (en) * 2019-03-18 2019-06-25 深圳市创智联科技发展有限公司 A kind of centrifugal fan that connection precision is high

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016224831A1 (en) 2016-10-27 2018-05-03 Hyundai Motor Company INTEGRATED OPERATING DEVICE FOR A WINDOW PLATE AND A DOOR CURTAIN
KR20180096443A (en) 2017-02-21 2018-08-29 나기호 Centrifugal pump
CN109931281A (en) * 2019-03-18 2019-06-25 深圳市创智联科技发展有限公司 A kind of centrifugal fan that connection precision is high

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