WO2017107228A1 - 旋片式真空泵 - Google Patents

旋片式真空泵 Download PDF

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Publication number
WO2017107228A1
WO2017107228A1 PCT/CN2015/099492 CN2015099492W WO2017107228A1 WO 2017107228 A1 WO2017107228 A1 WO 2017107228A1 CN 2015099492 W CN2015099492 W CN 2015099492W WO 2017107228 A1 WO2017107228 A1 WO 2017107228A1
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WO
WIPO (PCT)
Prior art keywords
pump body
rotating shaft
wall
sliding plate
pump
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PCT/CN2015/099492
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English (en)
French (fr)
Inventor
周琪
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常州市金坛翰广科技有限公司
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Publication of WO2017107228A1 publication Critical patent/WO2017107228A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum

Definitions

  • the invention relates to the technical field of vacuum pumps, in particular to a novel rotary vane vacuum pump.
  • a vacuum pump is a device that creates, improves, and maintains a vacuum in a closed space in a variety of ways. According to the working principle, it can be divided into a water ring vacuum pump, a Roots pump, a new rotary vane vacuum pump, etc., which generally consists of a pump body, a rotor, a rotary vane, an end cover, a spring, etc., and is eccentric in the inner cavity of the pump body.
  • a rotor is provided, the outer circumference of the rotor is tangent to the wall of the pump body, and two rotating vanes with springs are mounted on the rotor.
  • the top end of the rotary vane When rotating, the top end of the rotary vane is kept in contact with the wall of the pump body by the centrifugal force and the tension of the spring.
  • the rotation of the rotor drives the rotary vane to slide along the wall of the pump body, thereby changing the volume of the cavity separated by the rotary vane to complete the inhalation and exhaust. process.
  • the rotary vanes of the body cavity of the conventional vacuum pump pump are expanded by a spring, and the spring will fail after long-term use, thereby causing damage to the vacuum pump.
  • the technical problem to be solved by the invention is that in order to overcome the expansion of the rotary vanes of the vacuum pump body cavity by the spring, the spring will fail after long-term use, thereby causing damage to the vacuum pump, and providing a novel rotary vane type. Vacuum pump.
  • a novel rotary vane type vacuum pump comprising a pump body, a sealing end cover and a rotor rotating piece, wherein the sealing end cover is fixedly mounted on both end faces of the pump body,
  • the pump body is provided with an air suction passage and an exhaust passage communicating with the inner cavity, wherein the inner cavity of the pump body is rotatably mounted with a rotating shaft, and the outer circumference of the rotating shaft is uniformly provided with a retractable rotor rotating piece, two The ends of the rotor blades are respectively provided with a slider, and the inner wall of the pump body is provided with a slide rail in the circumferential direction, and the slider is slidably engaged in the slide rail, and the end portion of the rotor rotor blade is The inner wall of the pump is tangent.
  • the two rotor blades each include a fixing plate and a sliding plate
  • the fixing plate is provided with a through hole
  • the through hole has a depth greater than a length of the sliding plate
  • the sliding plate is slidably disposed at the In the through hole
  • the end of the sliding plate is provided with the slider
  • the end of the sliding plate is tangent to the inner wall of the pump.
  • the rotating shaft is eccentrically disposed with the axial center of the pump body cavity, and the length of the fixing plate is equal to the shortest distance from the central axis of the rotating shaft to the inner wall of the pump body.
  • the rotating shaft is driven to rotate by the motor.
  • the end of the sliding plate is always tangential to the inner wall of the pump body, and the shaft of the rotating shaft and the pump body cavity
  • the centering of the heart is set.
  • the rotating shaft rotates, the distance from the central axis of the rotating shaft to the inner wall changes, and the depth of the sliding plate into the through hole also changes, and the sliding plate reciprocates in the through hole of the fixed plate; when the center of the rotating shaft
  • the shortest distance from the axis to the inner wall of the pump is the shortest, the sliding plate completely enters the through hole, and the end of the fixed plate is tangent to the inner wall.
  • the rotation of the rotor vane in the inner cavity changes the volume of the cavity separated by the rotor vane to complete the inhalation and exhaust process.
  • the invention has the beneficial effects that the new rotary vane type vacuum pump of the present invention has a slider slidingly inserted into the sliding rail, and when the rotating shaft rotates, the distance from the central axis of the rotating shaft to the inner wall changes, and the sliding plate enters the passage.
  • the depth of the hole also changes, and the sliding plate reciprocates in the through hole of the fixed plate, so that the end of the sliding plate is always tangent to the inner wall of the pump; this structure replaces the spring, avoiding the failure of the spring after long-term use. , causing damage to the vacuum pump.
  • Figure 1 is a three-dimensional schematic view of the present invention
  • FIG. 2 is a three-dimensional assembly diagram of a rotor rotor and a pump body in the present invention
  • Figure 3 is an enlarged view of a portion A of Figure 2 of the present invention.
  • Figure 4 is a three-dimensional assembly diagram of the rotor rotor and the rotating shaft of the present invention.
  • a novel rotary vane vacuum pump as shown in FIG. 1-4 includes a pump body 1, a sealing end cover 2 and a rotor rotating piece, and the sealing end cover 2 is fixedly mounted on both end faces of the pump body 1, and the pump body 1 is provided There is an air suction passage 3 and an exhaust passage 4 communicating with the inner cavity.
  • the inner cavity of the pump body 1 is rotatably mounted with a rotating shaft 5, and the upper circumference of the rotating shaft 5 is uniformly provided with a retractable rotor rotating piece, and two rotor rotating pieces
  • the ends of the pump body 1 are provided with slides 7 in the circumferential direction of the inner wall of the pump body 1.
  • the sliders 6 are slidably locked in the slide rails 7, and the ends of the rotor blades are tangent to the inner wall of the pump body 1.
  • the two rotor blades each include a fixing plate 8 and a sliding plate 9.
  • the fixing plate 8 is provided with a through hole 10, the depth of the through hole 10 is greater than the length of the sliding plate 9, and the sliding plate 9 is slidably disposed in the through hole 10, and the sliding plate
  • the end of the 9 is provided with a slider 6, and the end of the sliding plate 9 is tangent to the inner wall of the pump body 1.
  • the rotating shaft 5 is eccentrically disposed with the axial center of the inner cavity of the pump body 1.
  • the length of the fixing plate 8 is equal to the shortest distance from the central axis of the rotating shaft 5 to the inner wall of the pump body 1.
  • the rotating shaft 5 is driven to rotate by the motor.
  • the end of the sliding plate 9 is always tangential to the inner wall of the pump body 1, and the rotating shaft 5 and the pump
  • the axis of the inner cavity of the body 1 is eccentrically disposed.
  • the through hole 10 reciprocates; when the shortest distance from the central axis of the rotating shaft 5 to the inner wall of the pump body 1 is the shortest, the sliding plate 9 completely enters the through hole 10, and the end of the fixing plate 8 is tangent to the inner wall.
  • the rotation of the rotor vane in the inner cavity changes the volume of the cavity separated by the rotor vane to complete the inhalation and exhaust process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种旋片式真空泵，密封端盖（2）固定安装在泵体（1）的两端面上，泵体（1）上设有与内腔连通的吸气通道（3）和排气通道（4），泵体（1）的内腔内转动安装有转动轴（5），转动轴（5）上圆周均布有可伸缩的转子旋片，两个转子旋片的端部均设有滑块（6），泵体（1）内壁的周向上设有滑轨（7），滑块（6）滑动卡设在滑轨（7）内，转子旋片的端部与泵体（1）内壁相切。该结构代替了弹簧，避免了弹簧在长期使用后会发生失效，从而造成真空泵的损坏的问题。

Description

[根据细则37.2由ISA制定的发明名称]　旋片式真空泵 技术领域
本发明涉及真空泵技术领域，尤其是涉及一种新型旋片式真空泵。
背景技术
真空泵是用各种方法在某一封闭空间中产生、改善和维持真空的装置。其按工作原理可分为水环式真空泵、罗茨泵、新型旋片式真空泵等，其一般由泵体、转子、旋片、端盖、弹簧等组成，在泵体的内腔内偏心的设置有一个转子，转子外圆与泵体内腔壁相切，转子上安装带弹簧的二个旋片。旋转时，靠离心力和弹簧的张力使旋片顶端与泵体内腔壁保持接触，转子旋转带动旋片沿泵体内腔壁滑动，从而改变旋片分隔的腔体的体积大小完成吸气和排气过程。然而传统的真空泵泵体内腔的旋片之间通过弹簧胀紧，长期使用后弹簧会发生失效，从而造成真空泵的损坏。
发明内容
本发明要解决的技术问题是：为了克服传统的真空泵泵体内腔的旋片之间通过弹簧胀紧，长期使用后弹簧会发生失效，从而造成真空泵的损坏的问题，提供一种新型旋片式真空泵。
本发明解决其技术问题所采用的技术方案是：一种新型旋片式真空泵，包括泵体、密封端盖和转子旋片，所述密封端盖固定安装在泵体的两端面上，所述泵体上设有与内腔连通的吸气通道和排气通道，所述泵体的内腔内转动安装有转动轴，所述转动轴上圆周均布有可伸缩的转子旋片，两个所述转子旋片的端部均设有滑块，所述泵体内壁的周向上设有滑轨，所述滑块滑动卡设在所述滑轨内，所述转子旋片的端部与所述泵体内壁相切。
进一步的，两个所述转子旋片均包括固定板和滑动板，所述固定板上开有通孔，所述通孔的深度大于所述滑动板的长度，所述滑动板滑动设置在所述通孔内，所述滑动板的端部设有所述滑块，所述滑动板的端部与所述泵体内壁相切。
进一步的，所述转动轴与泵体内腔的轴心偏心设置，所述固定板的长度等于转动轴的中心轴线到泵体内壁的最短距离。
使用时，转动轴由电机驱动转动，转动的过程中，由于滑块滑动卡设在所述滑轨内，使得滑动板的端部始终与泵体内壁相切，转动轴与泵体内腔的轴心偏心设置，在转动轴转动时，随转动轴中心轴线到内壁的距离改变，滑动板进入通孔的深度也随之改变，滑动板在固定板的通孔内往复运动；当转动轴的中心轴线到泵体内壁的最短距离最短时，滑动板完全进入通孔内，固定板的端部与内壁相切。内腔中转子旋片的转动，从而改变转子旋片分隔的腔体的体积大小完成吸气和排气过程。
本发明的有益效果是:本发明的新型旋片式真空泵，由于滑块滑动卡设在所述滑轨内，在转动轴转动时，随转动轴中心轴线到内壁的距离改变，滑动板进入通孔的深度也随之改变，滑动板在固定板的通孔内往复运动，使得滑动板的端部始终与泵体内壁相切；此结构代替了弹簧，避免了弹簧在长期使用后会发生失效，从而造成真空泵的损坏的问题。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明的三维示意图；
图2是本发明中转子旋片与泵体的三维装配示意图；
图3是本发明图2中A处的放大图；
图4是本发明中转子旋片与转动轴的三维装配示意图。
图中：1.泵体，2.密封端盖，3.吸气通道，4.排气通道，5.转动轴，6.滑块，7.滑轨，8.固定 板，9.滑动板，10.通孔。
具体实施方式
现在结合附图对本发明做进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
如图1-4所示的一种新型旋片式真空泵，包括泵体1、密封端盖2和转子旋片，密封端盖2固定安装在泵体1的两端面上，泵体1上设有与内腔连通的吸气通道3和排气通道4，泵体1的内腔内转动安装有转动轴5，转动轴5上圆周均布有可伸缩的转子旋片，两个转子旋片的端部均设有滑块6，泵体1内壁的周向上设有滑轨7，滑块6滑动卡设在滑轨7内，转子旋片的端部与泵体1内壁相切。
两个转子旋片均包括固定板8和滑动板9，固定板8上开有通孔10，通孔10的深度大于滑动板9的长度，滑动板9滑动设置在通孔10内，滑动板9的端部设有滑块6，滑动板9的端部与泵体1内壁相切。
进一步的，转动轴5与泵体1内腔的轴心偏心设置，固定板8的长度等于转动轴5的中心轴线到泵体1内壁的最短距离。
使用时，转动轴5由电机驱动转动，转动的过程中，由于滑块6滑动卡设在滑轨7内，使得滑动板9的端部始终与泵体1内壁相切，转动轴5与泵体1内腔的轴心偏心设置，在转动轴5转动时，随转动轴5中心轴线到内壁的距离改变，滑动板9进入通孔10的深度也随之改变，滑动板9在固定板8的通孔10内往复运动；当转动轴5的中心轴线到泵体1内壁的最短距离最短时，滑动板9完全进入通孔10内，固定板8的端部与内壁相切。内腔中转子旋片的转动，从而改变转子旋片分隔的腔体的体积大小完成吸气和排气过程。
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (3)

  1. 一种新型旋片式真空泵，包括泵体(1)、密封端盖(2)和转子旋片，所述密封端盖(2)固定安装在泵体(1)的两端面上，所述泵体(1)上设有与内腔连通的吸气通道(3)和排气通道(4)，其特征在于：所述泵体(1)的内腔内转动安装有转动轴(5)，所述转动轴(5)上圆周均布有可伸缩的转子旋片，两个所述转子旋片的端部均设有滑块(6)，所述泵体(1)内壁的周向上设有滑轨(7)，所述滑块(6)滑动卡设在所述滑轨(7)内，所述转子旋片的端部与所述泵体(1)内壁相切。
  2. 如权利要求1所述的新型旋片式真空泵，其特征在于：两个所述转子旋片均包括固定板(8)和滑动板(9)，所述固定板(8)上开有通孔(10)，所述通孔(10)的深度大于所述滑动板(9)的长度，所述滑动板(9)滑动设置在所述通孔(10)内，所述滑动板(9)的端部设有所述滑块(6)，所述滑动板(9)的端部与所述泵体(1)内壁相切。
  3. 如权利要求2所述的新型旋片式真空泵，其特征在于：所述转动轴(5)与泵体(1)内腔的轴心偏心设置，所述固定板(8)的长度等于转动轴(5)的中心轴线到泵体(1)内壁的最短距离。
PCT/CN2015/099492 2015-12-25 2015-12-29 旋片式真空泵 WO2017107228A1 (zh)

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CN201510991845.6A CN105626533B (zh) 2015-12-25 2015-12-25 旋片式真空泵
CN201510991845.6 2015-12-25

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CN108506211A (zh) * 2018-03-28 2018-09-07 浙江大行科技有限公司 汽车制动旋片式真空泵
CN117212157A (zh) * 2023-11-08 2023-12-12 江苏芬奇工业设备制造有限公司 一种可自动润滑旋片的旋片式真空泵

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CN110645173B (zh) * 2019-11-15 2021-01-26 世晃(上海)机电工业有限公司 一种压簧便于更换的旋片式真空泵

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Publication number Priority date Publication date Assignee Title
CN108506211A (zh) * 2018-03-28 2018-09-07 浙江大行科技有限公司 汽车制动旋片式真空泵
CN108506211B (zh) * 2018-03-28 2023-12-29 浙江大行科技有限公司 汽车制动旋片式真空泵
CN117212157A (zh) * 2023-11-08 2023-12-12 江苏芬奇工业设备制造有限公司 一种可自动润滑旋片的旋片式真空泵
CN117212157B (zh) * 2023-11-08 2024-02-27 江苏芬奇工业设备制造有限公司 一种可自动润滑旋片的旋片式真空泵

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