WO2021080086A1 - Pompe pour la protection de moyens d'étanchéité et la réalimentation en fluide de fuite - Google Patents

Pompe pour la protection de moyens d'étanchéité et la réalimentation en fluide de fuite Download PDF

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Publication number
WO2021080086A1
WO2021080086A1 PCT/KR2020/000222 KR2020000222W WO2021080086A1 WO 2021080086 A1 WO2021080086 A1 WO 2021080086A1 KR 2020000222 W KR2020000222 W KR 2020000222W WO 2021080086 A1 WO2021080086 A1 WO 2021080086A1
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WO
WIPO (PCT)
Prior art keywords
pump
discharge
fluid
groove
sealing means
Prior art date
Application number
PCT/KR2020/000222
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English (en)
Korean (ko)
Inventor
노성왕
Original Assignee
주식회사 제이엠모터스펌프
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Application filed by 주식회사 제이엠모터스펌프 filed Critical 주식회사 제이엠모터스펌프
Publication of WO2021080086A1 publication Critical patent/WO2021080086A1/fr

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Classifications

    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Definitions

  • the present invention relates to a pump that protects the sealing means and recirculates the leaked fluid.More specifically, the leaked fluid is returned to the supply direction while preventing damage to the sealing means from the fluid leaked by high pressure when the rotor is rotated to be resupplied. It relates to a pump for resupplying the leaked fluid and protecting the sealing means so as to.
  • a pump is a device that transfers fluid by starting by receiving power from a driving means such as a motor.
  • a non-economic pump in which energy is converted in an unsealed state, and energy in a sealed state. This is distinguished by a positive displacement pump.
  • the non-discharge type pump is that the discharge pressure decreases as the discharge amount increases, and there are centrifugal pumps, sand flow pumps, axial flow pumps, etc. depending on the mechanism and structure.
  • the positive displacement pump has a discharge amount that is approximately constant regardless of the load pressure, and includes a piston pump, a plunger pump, a gear pump, a screw pump, and a vane pump.
  • the positive displacement pump sucks a liquid by vacuuming the inside of the cylinder with a constant volume equipped with a suction valve and a delivery valve against a reciprocating linear motion of a piston, a plunger, or a bucket. It is a pump that supplies static pressure energy to a liquid by applying the required pressure to send and receive water.
  • the rotary positive displacement pump rotates a special type of rotor in a pump case, and a gear pump, a vane pump, and a screw pump are the main types.
  • the gear pump moves the liquid between the teeth and the wall of the pump case from the suction pipe to the discharge pipe as the gears rotate in engagement with each other in the container. Oil is usually used and the flow rate is small, but the pressure can be obtained up to 25 ⁇ 30MPa.
  • the vane pump has its movable blades in and out in the radial direction according to the rotation of the rotor. The pump is operated by rotating two or three threaded rods. Mainly for oil, the pressure is within 20MPa.
  • a lobular pump is used to extrude a liquid on the same principle as a gear pump. This can be seen as a reduced gear pump gear, and the structure is driven by a separate gear outside the counterpart because a set of rotors are meshed to make it impossible to rotate the counterpart.
  • the conventional rotary positive displacement pump can obtain a large lift coefficient and functions as a pump even at low speeds, but has a low flow rate and low efficiency when rotating at low speeds, and problems such as noise and wear of gears when rotating at high pressure and high speed are disadvantageous. have.
  • a rotary positive displacement pump which is Korean Patent Registration No. 552597, has been proposed.
  • the rotary positive displacement pump which is a pre-registered by the present applicant, has an inlet and a discharge port as shown in Figs. 1A and 1B.
  • a rotor part 200 that transfers fluid due to a change in volume due to a change in volume by rotation of the rotors 200a and 200b is installed inside the provided case 100, and a rotating shaft integrally formed with the rotors 200a and 200b In the sleeve 300 is fitted in the shaft hole of the wear plate 400, and in the chamber 110 formed in the case 100, a sealing means 500 installed on the rotating shaft of the rotor 200a, 200b prevents leakage. It is installed to prevent.
  • the present invention has been conceived in view of the above-described conventional problems, and its object is to prevent damage to the sealing means from the fluid leaked by high pressure during rotation of the rotor, thereby prolonging the life of the pump, increasing the efficiency of the pump, and preventing the leaked fluid. It is to provide a pump for resupplying the leaked fluid and protecting the sealing means to be resupplied by returning in the supply direction.
  • An object of the present invention as described above is a pump comprising a pump case in which a rotor is inserted and side plates are installed at both ends of the rotor, comprising: a discharge guide groove to the outside of a shaft hole in which a bearing is fitted; A discharge groove for discharging the fluid introduced into the discharge induction groove; A pump case having a connection passage connecting the discharge induction groove and the discharge groove for discharging the leaked fluid; It is achieved by a pump for resupplying the leaked fluid and protecting the sealing means, characterized in that it comprises a discharge hole formed in a predetermined portion of the side plate fixed in close contact with the pump case.
  • the discharge guide groove is achieved by a pump for resupplying the leaked fluid and protecting the sealing means, characterized in that it is formed on the shaft hole and the concentric circle.
  • the discharge guide groove is formed on the shaft hole and concentrically, and is achieved by a pump for protecting the sealing means and resupplying the leaked fluid, characterized in that the first and second discharge guide grooves are formed.
  • a pump for resupplying the leaked fluid and protecting the sealing means characterized in that the shaft hole and the second discharge guide groove formed on the concentric circle overlap each other to form a coupling groove to meet each other.
  • a pump case for a pump comprising: a discharge guide groove to the outside of a shaft hole in which a bearing is fitted and installed; It is achieved by a pump case having a discharge groove for discharging the fluid introduced into the discharge guide groove, and a connection passage connecting the discharge guide groove and the discharge groove for discharging the leaked fluid.
  • the pump for protecting the sealing means of the present invention and resupplying the leaked fluid prevents damage to the sealing means from the fluid leaked by the high pressure when the rotor rotates, thereby prolonging the life of the pump, increasing the efficiency of the pump, and It is a very useful invention that has the effect of protecting the sealing means for resupplying the fluid by returning it in the supply direction and resupplying the leaked fluid.
  • FIGS. 1A and 1B are an exploded perspective view and a combined cross-sectional view showing the structure of a general rotary displacement pump.
  • FIG. 2 is an exemplary view showing a pressure state according to the structure of a general rotary displacement pump
  • FIG. 3 is an exploded perspective view showing the structure of a pump to which the technology of the present invention is applied.
  • Figure 4 is a front view showing the structure of the pump case that is the technical gist of the present invention.
  • 5A is an exemplary view showing an installation state of a side plate provided with a discharge hole in a pump case.
  • Figure 5b is a cross-sectional view showing another embodiment of the outlet.
  • Figure 6 is a front view showing a structure for recirculating the leaked fluid between the pump case and the side plate.
  • FIG. 3 is an exploded perspective view showing the structure of a rotary displacement pump to which the technology of the present invention is applied, and the rotary displacement pump of the present invention according to the present invention transfers a fluid inside the pump case 10 provided with an inlet and a discharge port.
  • a pair of rotors 20 are installed, and a bearing 30 is installed on the rotating shaft 80 of the rotor 20, and a side plate 40 having shaft holes is provided on the rotating shaft 80 on which the bearing 30 is installed. It is a built-in structure.
  • a plurality of fixing holes 41 fixed to the pump case 10 are formed in the side plate 40 fixed in close contact with the pump case 10, and the shaft hole has the same center as the shaft hole 17 formed in the pump case 10. It is provided with (42), but is a structure consisting of a discharge hole 43 formed in a certain portion.
  • the side plate 40 is made of a metal material as shown in the accompanying drawings Fig. 5A, and the main plate 44 having the fixing hole 41 and the shaft hole 42 formed thereon, and the surface of the main plate 44 are silicone, rubber. , An elastic layer 45 such as ceramic is provided, and a discharge hole 43 is formed on one side thereof.
  • the discharge hole 43 may be formed to be vertically perpendicular, but as shown in the accompanying drawings, FIG. 5B, a fluid to be recirculated by forming an inclined surface in the discharge hole 43 according to the direction of the supplied fluid is supplied at a low pressure. It can also be easily included in.
  • the discharge guide groove 16 is preferably formed on a concentric circle with the shaft hole 17, and the discharge guide groove 16 is formed on a concentric circle with the shaft hole 17 as shown in FIG. It can be formed by dividing into the first and second discharge induction grooves 16a and 16b.
  • the shaft hole 17 and the second discharge guide groove 16b formed on a concentric circle overlap each other to form a coupling groove 18 to meet each other.
  • the reason that the second discharge guide groove (16b) overlaps each other to form the coupling groove (18) is because a space is formed between the second discharge guide groove (16b) and the second discharge guide groove (16b). This is to prevent the occurrence of non-existent parts.
  • the side where the fluid is supplied around an arbitrary center line "O" is low pressure, and the fluid is discharged by the compression force of the rotor.
  • the fluid compressed at high pressure will leak due to the gap between the rotating shaft and the shaft hole.
  • the side plate 40 when the side plate 40 is installed inside the pump case 10, the fluid leaked between the pump case 10 and the side plate 40 is filled while forming a high pressure, and the fluid is filled with the side plate ( 40) and the sealing means 50 installed in the pump case 10 are pushed out with pressure.
  • the side plate 40 when the side plate 40 is installed inside the pump case 10, the fluid leaked between the pump case 10 and the side plate 40 is filled while forming a high pressure, and the fluid is The side plate 40 and the sealing means 50 installed in the case 10 are pushed out with pressure.
  • the leaked fluid flows into the discharge guide groove 16 formed concentrically with the shaft hole 17, and the introduced fluid moves toward a low pressure.
  • a plurality of discharge guide grooves 16 are formed at regular intervals, such as the first discharge guide groove 16a and the second discharge guide groove 16b, rather than one formed.
  • the discharge induction groove 16 at the low pressure side is connected to the discharge groove 13 through a connection passage 15, so that the fluid is collected in the discharge groove 13, and the discharge hole of the side plate 40 by the pressure At the same time as it is discharged through (43), it is mixed with the supplied fluid again and re-supplied to the rotor.
  • the present invention prevents damage to the sealing means from the fluid leaked by high pressure when the rotor rotates, prolongs the life of the pump, increases the efficiency of the pump, and returns the leaked fluid in the supply direction to re-supply the sealing means. It is a very useful invention that has the effect of preventing damage, extending the life of the pump, and increasing the efficiency of the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

La présente invention concerne une pompe destinée à protéger un moyen d'étanchéité et à faire recirculer un fluide de fuite et, plus spécifiquement, une pompe destinée à protéger un moyen d'étanchéité et à réinjecter le fluide de fuite, la pompe renvoyant le fluide de fuite dans une direction d'alimentation et le réinjectant, tout en empêchant qu'une détérioration soit provoquée par une haute pression pendant la rotation du rotor, dans le moyen d'étanchéité. Par conséquent, la présente invention concerne une pompe comprenant un carter dans lequel le rotor est inséré et sur les deux extrémités duquel sont disposées des plaques latérales, la pompe comprenant : une rainure de guidage d'évacuation sur le côté extérieur d'un trou d'arbre dans lequel est monté un palier ; une rainure d'évacuation pour évacuer un fluide s'écoulant dans la rainure de guidage d'évacuation ; le carter de pompe présentant un canal de raccordement pour relier la rainure de guidage d'évacuation et la rainure d'évacuation qui évacue le fluide de fuite; et des trous d'évacuation formés au niveau de parties prédéterminées des plaques latérales fixées pour venir en contact étroit avec le carter de pompe.
PCT/KR2020/000222 2019-10-21 2020-01-07 Pompe pour la protection de moyens d'étanchéité et la réalimentation en fluide de fuite WO2021080086A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20190130765 2019-10-21
KR10-2019-0130765 2019-10-21

Publications (1)

Publication Number Publication Date
WO2021080086A1 true WO2021080086A1 (fr) 2021-04-29

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PCT/KR2020/000222 WO2021080086A1 (fr) 2019-10-21 2020-01-07 Pompe pour la protection de moyens d'étanchéité et la réalimentation en fluide de fuite

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000009055A (ja) * 1998-06-25 2000-01-11 Kubota Corp ギヤポンプ
KR20080099118A (ko) * 2007-05-07 2008-11-12 나종갑 기어 펌프
JP2009030516A (ja) * 2007-07-26 2009-02-12 Toyota Industries Corp ギヤポンプ
JP2016070210A (ja) * 2014-09-30 2016-05-09 ダイキン工業株式会社 歯車ポンプ又は歯車モータ
KR101964049B1 (ko) * 2017-12-06 2019-04-01 태일엔지니어링 주식회사 역류 방지 기능을 갖는 회전 용적형 펌프

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000009055A (ja) * 1998-06-25 2000-01-11 Kubota Corp ギヤポンプ
KR20080099118A (ko) * 2007-05-07 2008-11-12 나종갑 기어 펌프
JP2009030516A (ja) * 2007-07-26 2009-02-12 Toyota Industries Corp ギヤポンプ
JP2016070210A (ja) * 2014-09-30 2016-05-09 ダイキン工業株式会社 歯車ポンプ又は歯車モータ
KR101964049B1 (ko) * 2017-12-06 2019-04-01 태일엔지니어링 주식회사 역류 방지 기능을 갖는 회전 용적형 펌프

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