WO2021080086A1 - Pump for protecting sealing means and resupplying leaking fluid - Google Patents

Pump for protecting sealing means and resupplying leaking fluid Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
pump
discharge
fluid
groove
sealing means
Prior art date
Application number
PCT/KR2020/000222
Other languages
French (fr)
Korean (ko)
Inventor
노성왕
Original Assignee
주식회사 제이엠모터스펌프
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 제이엠모터스펌프 filed Critical 주식회사 제이엠모터스펌프
Publication of WO2021080086A1 publication Critical patent/WO2021080086A1/en

Links

Images

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.

Landscapes

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

Abstract

The present invention relates to a pump for protecting a sealing means and recirculating leaking fluid, and, more specifically, to a pump for protecting a sealing means and resupplying leaking fluid, the pump returning the leaking fluid in a supply direction and resupplying same, while preventing damage, caused by high pressure during rotor rotation, to the sealing means from the leaking fluid. Therefore, the present invention relates to a pump comprising a pump case in which the rotor is inserted and side plates are provided on both ends of the rotor, the pump including: a discharge guide groove on the outer side of a shaft hole into which a bearing is fitted; a discharge groove for discharging fluid flowing into the discharge guide groove; the pump case having a connecting path for connecting the discharge guide groove and the discharge groove that discharges the leaking fluid; and discharge holes formed at predetermined portions of the side plates fixed to come into close contact with the pump case.

Description

밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프Pump to protect sealing means and resupply leaked fluid
본 발명은 밀봉수단 보호 및 누수된 유체를 재순환시키는 펌프에 관한 것으로서 보다 상세하게는 로터의 회전시 고압에 의해 누수된 유체로부터 밀봉수단의 파손을 방지하면서 누수된 유체를 공급방향으로 리턴시켜 재공급하도록 한 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프에 관한 것이다.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.
일반적으로 펌프는 모터와 같은 구동수단의 동력을 전달받아 기동하여 유체를 이송하는 기기로, 밀폐되지 않은 상태에서 에너지의 전환이 일어나는 비용적형(非容積形) 펌프와, 밀폐된 상태에서 에너지의 전환이 일어나는 용적형(容積形) 펌프로 구별된다. 비용적형 펌프는 토출량이 증가함에 따라 토출압은 감소하는 것으로, 그 기구 및 구조에 따라 원심펌프, 사류펌프, 축류펌프 등이 있다. 그리고 용적형 펌프는 토출량이 부하압력에 관계 없이 대략 일정한 것으로, 피스톤펌프, 플런저펌프, 기어펌프, 나사펌프, 베인펌프 등이 있다.In general, 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. In addition, 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.
상기 용적형 펌프는 흡입밸브와 송출밸브를 장치한 일정한 체적을 가진 실린더 내를 피스톤, 플렌저 또는 버킷 등의 왕복 직선운동에 대하여 실린더 내를 진공으로 만들어 액체를 흡입하고 이에 용적의 이동 변화를 통하여 소요의 압력을 가함으로서 액체에 정압력에너지를 공급하여 송수하는 펌프이다.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.
상기 회전식 용적형 펌프는 펌프케이스 안에서 특수한 형태의 로터를 회전시키는 것으로 기어펌프, 베인펌프, 나사펌프가 주종을 이룬다. 기어펌프는 기어가 용기 안에서 서로 맞물려 회전하면서 톱니와 펌프케이스벽 사이의 액체를 흡입관에서 배출관으로 보낸다. 기름용이 보통이며 유량은 적지만 압력은 25~30MPa까지 얻을 수 있으며, 상기 베인펌프는 로터의 회전에 따라 가동날개가 반지름 방향으로 출입하여 기어펌프와 같은 방식으로 압력은 최고 40MPa 정도까지 얻어지고 나사펌프는 2~3개의 나사봉을 맞물려 회전시켜서 펌프를 작동하게 하는 것이다. 주로 기름용으로 압력은 20MPa 이내이다.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.
상기와 같은 종래의 회전식 용적형 펌프에 있어서 기어펌프와 똑같은 원리로 액체를 압출하는 것에 로브펌프(lobular pump)가 있다. 이것은 기어펌프의 치차를 적게 한 것이라고 볼 수 있으며, 구조는 한조의 로터가 맞물림으로써 상대방을 회전시킬 수 없으므로 외부에 있는 별도의 기어에 의해 상대방을 구동한다.In the conventional rotary positive displacement pump as described above, 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.
상기 종래의 회전식 용적형펌프는 큰 양정계수를 얻을 수 있고 저속에서도 펌프로서의 기능을 발휘하지만, 유량이 적고 저속회전시 효율 저하, 고압 고속회전시 기어의 소음 및 마모 등의 장애가 발생하게 되는 결점이 있다.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.
이러한 상기 종래 문제점을 해소하고자 대한민국 특허등록 제552597호인 회전식 용적형 펌프를 제안한 바 있으나 상기한 본 출원인의 선 등록인 회전식 용적형 펌프는 첨부도면 도 1a 및 도 1b에 도시된 바와 같이 흡입구와 토출구가 구비된 케이스(100) 내부에는 로터(200a)(200b)의 회전에 의하여 용적의 변화로 인하여 유체를 이송시키는 로터부(200)가 설치되며, 상기 로터(200a)(200b)와 일체로 형성된 회전축에는 슬리브(300)가 마모판(400)의 축공에 끼워져 설치되며, 상기 케이스(100)에 형성된 챔버(110)에는 로터(200a)(200b)의 회전축에 축설되는 밀봉수단(500)이 누수를 방지하도록 설치되어 있다.In order to solve the above problems, a rotary positive displacement pump, which is Korean Patent Registration No. 552597, has been proposed. However, 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.
상기 종래 회전식 용적형 펌프는 상기 부싱밀봉수단(500)의 경우 펌프가 13~20MPa 사이의 성능을 요구할 경우 일반적인 이하에서 적용 가능한 밀봉수단인 오일씰을 적용하지 못하므로 수십 배의 경제적 차이가 나는 메카니칼씰 또는 다수의 밀봉수단을 사용하여 구성된 고가의 복수밀봉수단의 설치하여 사용하였다.In the case of the conventional rotary positive displacement pump, in the case of the bushing sealing means 500, when the pump requires a performance between 13 and 20 MPa, the oil seal, which is a sealing means applicable below the general, cannot be applied, so that the mechanical seal has an economic difference of several tens of times. Alternatively, a plurality of expensive sealing means constructed using a plurality of sealing means were installed and used.
그러나 종래의 회전식 용적형 펌프에 있어서 첨부도면 도 2에 도시된 바와 같이 임의의 중심선 "O"를 중심으로 유체가 공급되는 쪽은 저압이고 유체가 배출되는 쪽은 고압으로 상기 고압으로 압축하여 이송시킬 때 회전축을 타고 누수가 발생되며 상기 누수되는 유체는 고압으로 밀봉수단에 전달됨으로 상기한 누수된 유체에 의해 파손되는 문제가 발생되어 펌프의 효율이 저하되거나 수명이 단축되는 문제점이 있다.However, in the conventional rotary positive displacement pump, as shown in the accompanying drawings, as shown in Fig. 2, the side to which the fluid is supplied is low pressure, and the side where the fluid is discharged is high pressure. When water is leaked along the rotating shaft, and the leaked fluid is delivered to the sealing means at high pressure, there is a problem in that the leaked fluid is damaged, thereby reducing the efficiency of the pump or shortening the lifespan.
본 발명은 상기한 종래 문제점을 감안하여 안출한 것으로서 이의 목적은 로터의 회전시 고압에 의해 누수된 유체로부터 밀봉수단의 파손을 방지하여 펌프의 수명을 연장시킴과 펌프의 효율증대 및 누수된 유체를 공급방향으로 리턴시켜 재 공급하도록한 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프를 제공하는데 있다.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.
상기한 본 발명의 목적은 로터가 삽입 설치되며 로터의 양단으로는 사이드플레이트가 설치된 펌프케이스로 이루어진 펌프에 있어서, 베어링이 끼워져 설치되는 축공의 바깥쪽으로 배출유도홈과; 상기 배출유도홈으로 유입된 유체를 배출시키는 배출홈과; 상기 배출유도홈과 누수된 유체를 배출시키는 배출홈을 연결하는 연결유로를 형성한 펌프케이스와; 상기 펌프케이스에 밀착되게 고정되는 사이드플레이트의 일정부위에 형성된 배출공을 포함하여 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프에 의하여 달성된다.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.
상기 배출유도홈은 축공과 동심원 상에 형성되어 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프에 의하여 달성된다.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.
상기 배출유도홈은 축공과 동심원 상에 형성되며 제1 및 제2배출유도홈으로 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프에 의하여 달성된다.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.
상기 축공과 동심원 상에 형성된 제2배출유도홈이 서로 겹쳐져 만나는 결합홈부를 형성한 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프에 의하여 달성된다.It is achieved by 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.
펌프용 펌프케이스에 있어서, 베어링이 끼워져 설치되는 축공의 바깥쪽으로 배출유도홈과; 상기 배출유도홈으로 유입된 유체를 배출시키는 배출홈과 상기 배출유도홈과 누수된 유체를 배출시키는 배출홈을 연결하는 연결유로를 형성한 펌프케이스에 의하여 달성된다.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.
이와 같은 본 발명의 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프는 로터의 회전시 고압에 의해 누수된 유체로부터 밀봉수단의 파손을 방지하여 펌프의 수명을 연장시킴과 펌프의 효율증대 및 누수된 유체를 공급방향으로 리턴시켜 재 공급하도록한 밀봉수단 보호 및 누수된 유체를 재공급시키는 효과가 있는 매우 유용한 발명이다.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.
도 1a 및 도 1b는 일반적인 회전용적형 펌프의 구조를 보여주는 분해사시도 및 결합단면도.1A and 1B are an exploded perspective view and a combined cross-sectional view showing the structure of a general rotary displacement pump.
도 2는 일반적인 회전용적형 펌프의 구조에 따른 압력 상태를 보여주는 예시도2 is an exemplary view showing a pressure state according to the structure of a general rotary displacement pump
도 3은 본 발명의 기술이 적용된 펌프의 구조를 보여주는 분해 사시도.3 is an exploded perspective view showing the structure of a pump to which the technology of the present invention is applied.
도 4는 본 발명의 기술적 요지인 펌프케이스의 구조를 보여주는 정면도.Figure 4 is a front view showing the structure of the pump case that is the technical gist of the present invention.
도 5a는 펌프케이스에 배출공이 구비된 사이드플레이트의 설치상태를 보여주는 예시도.5A is an exemplary view showing an installation state of a side plate provided with a discharge hole in a pump case.
도 5b는 배출구의 다른 실시예를 보여주는 단면도.Figure 5b is a cross-sectional view showing another embodiment of the outlet.
도 6은 펌프케이스와 사이드플레이트 사이로 누수된 유체를 재순환시키는 구조를 보여주는 정면도.Figure 6 is a front view showing a structure for recirculating the leaked fluid between the pump case and the side plate.
이하 본 발명의 바람직한 실시예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
첨부도면 도 3은 본 발명의 기술이 적용된 회전 용적형 펌프의 구조를 보여주는 분해사시도로써 이에 따른 본 발명의 회전 용적형 펌프는 흡입구와 토출구가 구비된 펌프케이스(10) 내부에는 유체를 이송시키는 한 쌍의 로터(20)가 설치되며, 상기 로터(20)의 회전축(80)에는 베어링(30)이 축설되며 베어링(30)이 설치되는 회전축(80)에는 축공이 구비된 사이드플레이트(40)가 끼워져 설치된 구조이다.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.
상기 펌프케이스(10) 내부면 즉, 베어링이 끼워져 설치되는 축공(17)을 중심으로 바깥쪽으로 배출유도홈(16)과 상기 배출유도홈(16)으로 유입된 유체를 배출시키는 배출홈(13)과 상기 배출유도홈(16)과 누수된 유체를 배출시키는 배출홈(13)을 연결하는 연결유로(15)를 형성한 구조이다.A discharge guide groove (16) and a discharge groove (13) for discharging the fluid flowing into the discharge guide groove (16) to the outside of the pump case (10) inner surface, that is, a shaft hole (17) in which a bearing is installed. And a connection passage 15 connecting the discharge induction groove 16 and the discharge groove 13 for discharging the leaked fluid.
상기 펌프케이스(10)에 밀착되게 고정되는 사이드플레이트(40)에는 펌프케이스(10)에 고정하는 고정공(41)이 다수 형성되며 펌프케이스(10)에 형성된 축공(17)과 중심이 같은 축공(42)을 구비하되 일정부위에 형성된 배출공(43)을 포함하여 이루어진 구조이다.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.
한편 상기 사이드플레이트(40)는 첨부도면 도 5a에 도시된 바와 같이 금속재로 이루어지며 고정공(41)과 축공(42)이 형성된 메인판(44)과 상기 메인판(44) 표면에는 실리콘, 고무, 세라믹 등의 탄성층(45)이 구비되며 일측에 배출공(43)이 이루어진 구조이다.On the other hand, 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.
상기 배출공(43)은 수직으로 직각되게 형성될 수도 있으나 첨부도면 도 5b에 도시된 바와 같이 공급되는 유체의 방향에 따라서 배출공(43)에 경사면을 형성시켜 재순환되는 유체가 저압으로 공급되는 유체에 용이하게 포함되도록 할 수도 있다.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.
상기 배출유도홈(16)은 축공(17)과 동심원 상에 형성되는 것이 바람직하며, 첨부도면 도 4에 도시된 바와 같이 상기 배출유도홈(16)은 축공(17)과 동심원 상에 형성되며 제1 및 제2배출유도홈(16a)(16b)으로 나누어 형성시켜 사용할 수 있다.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.
상기에서와 같이 축공을 중심으로 배출유도홈(16)을 제1배출유도홈(16a) 및 제2배출유도홈(16b)으로 나누어 형성시키면 축공(17)으로부터 가까운 부위의 누수와 축공(17)으로부터 먼 부위의 누수도 모아 배출할 수 있어 효과가 있으며 더욱이 누수되는 유체의 양이 많을 때에도 효과적으로 대응할 수 있기 때문이다.As in the above, when the discharge guide groove 16 is divided into a first discharge guide groove 16a and a second discharge guide groove 16b around the shaft hole, water leakage and shaft hole 17 near the shaft hole 17 are formed. This is because it is effective because it can collect and discharge water from a part far away from it, and moreover, it can respond effectively even when the amount of leaked fluid is large.
한편 첨부도면 도 4에 도시된 바와 같이 상기 축공(17)과 동심원 상에 형성된 제2배출유도홈(16b)이 서로 겹쳐져 만나는 결합홈부(18)를 형성한 것에 그 특징이 있다. 상기에서와 같이 제2배출유도홈(16b)이 서로 겹쳐져 만나는 결합홈부(18)를 형성한 이유는 제2배출유도홈(16b)과 제2배출유도홈(16b) 사이에 공간이 형성되어 배출되지 않는 부분이 발생되는 것을 방지하기 위함이다. Meanwhile, as shown in FIG. 4 of the accompanying drawings, 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. As described above, 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.
상기와 같은 구조를 갖는 본 발명의 회전식 용적형 펌프에 있어서 첨부도면 도 2에 도시된 바와 같이 임의의 중심선 "O"를 중심으로 유체가 공급되는 쪽은 저압이고 로터의 압축력에 의해 유체가 배출되는 쪽은 고압으로 상기 고압으로 압축하여 이송시킬 때 고압으로 압축된 유체는 회전축과 축공 사이의 틈새에 의해 누수가 발생하게 된다.In the rotary positive displacement pump of the present invention having the structure as described above, as shown in the accompanying drawings, 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. When the fluid is compressed and transported at high pressure, the fluid compressed at high pressure will leak due to the gap between the rotating shaft and the shaft hole.
예컨대 펌프케이스(10)의 내측으로 사이드플레이트(40)가 설치됨에 있어서 상기한 펌프케이스(10)와 사이드플레이트(40) 사이에 누수된 유체가 고압을 형성하면서 채워지게 되고 상기 유체는 사이드플레이트(40)와 펌프케이스(10)에 설치된 밀봉수단(50)을 압력으로 밀어낸다.For example, 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.
따라서 누수된 고압의 유체에 의해 밀봉수단(50)이 종래에는 누수되는 유체가 고압으로 인하여 파손되는 문제가 발생되어 펌프의 효율이 저하되거나 수명이 단축되는 문제점이 있다.Accordingly, there is a problem in that the leaked fluid is damaged due to high pressure in the sealing means 50 due to the leaked high pressure fluid, and thus the efficiency of the pump is reduced or the lifespan is shortened.
그러나 본 발명은 펌프케이스(10)의 내측으로 사이드플레이트(40)가 설치됨에 있어서 상기한 펌프케이스(10)와 사이드플레이트(40) 사이에 누수된 유체가 고압을 형성하면서 채워지게 되고 상기 유체는 사이드플레이트(40)와 케이스(10)에 설치된 밀봉수단(50)을 압력으로 밀어낸다.However, in the present invention, 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.
이때 누수된 유체는 축공(17)과 동심원 상에 형성된 배출유도홈(16)으로 유입되고 유입된 유체는 저압 쪽으로 이동된다. 물론 배출유도홈(16)이 하나 형성된 것보다는 제1배출유도홈(16a)과 제2배출유도홈(16b)처럼 일정한 간격으로 복수개 이상 형성된 것이 바람직하다At this time, 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. Of course, it is preferable that 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.
상기 저압쪽 위치의 배출유도홈(16)에는 연결유로(15)를 통해 배출홈(13)과 연결되어 있어 유체는 배출홈(13)에 모여지게 되며 압력에 의해 사이드플레이트(40)의 배출공(43)을 통해 배출됨과 동시에 공급되는 유체에 다시 혼합되어 로터 쪽으로 재 공급되게 된다.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.
이때 상기 배출공(43)에 첨부도면 도 5b에 도시된 바와 같이 공급되는 유체의 방향에 따라서 배출공(43)에 경사면을 형성시켜 재순환되는 유체가 저압으로 공급되는 유체에 용이하게 포함되도록 할 수도 있다.At this time, an inclined surface is formed in the discharge hole 43 according to the direction of the fluid supplied to the discharge hole 43 as shown in Fig. 5B, so that the recirculated fluid can be easily included in the fluid supplied at low pressure. have.
이와 같은 본 발명은 로터의 회전시 고압에 의해 누수된 유체로부터 밀봉수단의 파손을 방지하여 펌프의 수명을 연장시킴과 펌프의 효율증대 및 누수된 유체를 공급방향으로 리턴시켜 재 공급시켜 밀봉수단의 파손 방지, 펌프의 수명 연장, 펌프의 효율증대 등의 효과가 있는 매우 유용한 발명이다.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.
[부호의 설명][Explanation of code]
10 : 펌프케이스 10: pump case
13 : 배출홈13: discharge groove
15 : 연결유로 15: connecting flow
16 : 배출유도홈16: discharge induction groove
16a : 제1배출유도홈 16a: first discharge induction groove
16b : 제2배출유도홈16b: second discharge induction groove
17 : 축공 17: construction
18 : 결합홈부18: coupling groove
20 : 로터 20: rotor
30 : 베어링30: bearing
40 : 사이드플레이트 40: side plate
41 : 고정공41: fixed hole
42 : 축공 42: axis work
43 : 배출공43: discharge hole
44 : 메인판 44: main board
45 : 탄성층45: elastic layer
50 : 밀봉수단 50: sealing means
80 : 회전축80: rotating shaft

Claims (5)

  1. 로터가 삽입 설치되며 로터의 양단으로는 사이드플레이트가 설치된 펌프케이스로 이루어진 펌프에 있어서,In a pump consisting of a pump case in which a rotor is inserted and side plates are installed at both ends of the rotor,
    베어링이 끼워져 설치되는 축공의 바깥쪽으로 배출유도홈과; A discharge guide groove to the outside of the shaft hole in which the bearing is installed;
    상기 배출유도홈으로 유입된 유체를 배출시키는 배출홈과; A discharge groove for discharging the fluid introduced into the discharge induction groove;
    상기 배출유도홈과 누수된 유체를 배출시키는 배출홈을 연결하는 연결유로를 형성한 펌프케이스와;A pump case having a connection passage connecting the discharge induction groove and the discharge groove for discharging the leaked fluid;
    상기 펌프케이스에 밀착되게 고정되는 사이드플레이트의 일정부위에 형성된 배출공을 포함하여 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프.A pump for protecting the sealing means and resupplying the leaked fluid, comprising a discharge hole formed in a predetermined portion of the side plate fixed in close contact with the pump case.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 배출유도홈은 축공과 동심원 상에 형성되어 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프.The discharge guide groove is formed on the shaft hole and the concentric circle to protect the sealing means, characterized in that the pump for resupplying the leaked fluid.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 배출유도홈은 축공과 동심원 상에 형성되며 제1 및 제2배출유도홈으로 이루어진 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프.The discharge guide groove is formed on the shaft hole and the concentric circle, and a pump for protecting a sealing means and resupplying the leaked fluid, characterized in that consisting of first and second discharge guide grooves.
  4. 제 3 항에 있어서,The method of claim 3,
    상기 축공과 동심원 상에 형성된 제2배출유도홈이 서로 겹쳐져 만나는 결합홈부를 형성한 것을 특징으로 하는 밀봉수단 보호 및 누수된 유체를 재공급시키는 펌프.The pump for protecting the sealing means and resupplying the leaked fluid, 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.
  5. 펌프용 펌프케이스에 있어서In the pump case for pump
    베어링이 끼워져 설치되는 축공의 바깥쪽으로 배출유도홈과; 상기 배출유도홈으로 유입된 유체를 배출시키는 배출홈과; 상기 배출유도홈과 누수된 유체를 배출시키는 배출홈을 연결하는 연결유로를 형성한 것을 특징으로 하는 펌프용 펌프케이스.A discharge guide groove to the outside of the shaft hole in which the bearing is installed; A discharge groove for discharging the fluid introduced into the discharge induction groove; A pump case for a pump, characterized in that a connection passage connecting the discharge induction groove and the discharge groove for discharging the leaked fluid is formed.
PCT/KR2020/000222 2019-10-21 2020-01-07 Pump for protecting sealing means and resupplying leaking fluid WO2021080086A1 (en)

Applications Claiming Priority (2)

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

Publications (1)

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

Family

ID=75620775

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/000222 WO2021080086A1 (en) 2019-10-21 2020-01-07 Pump for protecting sealing means and resupplying leaking fluid

Country Status (1)

Country Link
WO (1) WO2021080086A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000009055A (en) * 1998-06-25 2000-01-11 Kubota Corp Gear pump
KR20080099118A (en) * 2007-05-07 2008-11-12 나종갑 Gear pump
JP2009030516A (en) * 2007-07-26 2009-02-12 Toyota Industries Corp Gear pump
JP2016070210A (en) * 2014-09-30 2016-05-09 ダイキン工業株式会社 Gear pump or gear motor
KR101964049B1 (en) * 2017-12-06 2019-04-01 태일엔지니어링 주식회사 Rotary positive displacement pump having a backflow protection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000009055A (en) * 1998-06-25 2000-01-11 Kubota Corp Gear pump
KR20080099118A (en) * 2007-05-07 2008-11-12 나종갑 Gear pump
JP2009030516A (en) * 2007-07-26 2009-02-12 Toyota Industries Corp Gear pump
JP2016070210A (en) * 2014-09-30 2016-05-09 ダイキン工業株式会社 Gear pump or gear motor
KR101964049B1 (en) * 2017-12-06 2019-04-01 태일엔지니어링 주식회사 Rotary positive displacement pump having a backflow protection

Similar Documents

Publication Publication Date Title
WO2017222347A1 (en) Vane-type air motor
WO2013051804A1 (en) Air vane motor configured with a liner
WO2017156933A1 (en) High pressure resistant flushing system with multiple mechanical seals
KR100736384B1 (en) Positive displacement pump
WO2015143141A1 (en) Gear pump with end plates or bearings having spiral grooves
WO2021080086A1 (en) Pump for protecting sealing means and resupplying leaking fluid
WO2007007975A1 (en) Volumetric rotary pump
KR950007519B1 (en) Rotary type vacuum pump
KR101947030B1 (en) Hydrauric force sealing device for pump
WO2021112327A1 (en) Rotor having cooling function
WO2011049362A2 (en) Screw rotor type vacuum pump incorporating motor
US3134336A (en) Method and apparatus for pressure counterbalance in fluid machines
KR101964049B1 (en) Rotary positive displacement pump having a backflow protection
KR102145566B1 (en) Positive displacement pump for recirculating leaking fluids and increasing watertight effect
CN215927767U (en) Hydraulic gear pump
CN110714954B (en) Oil cylinder
DK153174B (en) SHELTER SEAL FOR A TURN PUMP PUMP, INSERT A VACUUM PUMP
CN1089875C (en) Liquid-working-medium self-filling sealing method
CN214742316U (en) Engine water pump
CN201884245U (en) Shaft seal structure for vacuum pump
KR102654609B1 (en) Rotating roter having cooling effect of sealing device
CN219932515U (en) Oilless refrigerant circulating pump
KR20120082291A (en) Volumetric rotary pump which depressed a pressure of a chamber interior
WO2019112232A1 (en) Vacuum pump
CN217481508U (en) Air main valve and pneumatic double-diaphragm pump provided with same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20878918

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20878918

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 08.09.2022)