WO2021103773A1 - Sealing structure for vacuum pump - Google Patents

Sealing structure for vacuum pump Download PDF

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Publication number
WO2021103773A1
WO2021103773A1 PCT/CN2020/116391 CN2020116391W WO2021103773A1 WO 2021103773 A1 WO2021103773 A1 WO 2021103773A1 CN 2020116391 W CN2020116391 W CN 2020116391W WO 2021103773 A1 WO2021103773 A1 WO 2021103773A1
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WIPO (PCT)
Prior art keywords
vacuum pump
pump housing
welded
side cover
mounting plate
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PCT/CN2020/116391
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French (fr)
Chinese (zh)
Inventor
王煜
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王煜
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Publication of WO2021103773A1 publication Critical patent/WO2021103773A1/en

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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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Definitions

  • the invention relates to the technical field of vacuum pumps, in particular to a sealing structure of a vacuum pump.
  • a vacuum pump refers to a device or equipment that uses mechanical, physical, chemical, or physical chemical methods to pump air from the pumped container to obtain a vacuum.
  • a vacuum pump is a device that uses various methods to improve, generate and maintain vacuum in a closed space.
  • vacuum pumps can be basically divided into two types, namely, gas trapping pumps and gas transmission pumps. . It is widely used in metallurgy, chemical, food, electronic coating and other industries.
  • the present invention provides a vacuum pump sealing structure, which has the advantages of good sealing performance, etc., and solves the problem that if dust enters the oil-sealed vacuum pump with the pumped gas and is mixed in the pump oil during the operation of the vacuum pump Abrasives speed up the wear of the parts in the pump cavity, cause wear and damage to the vacuum pump rotor and pump cavity, block the oil circuit or make the vacuum pump inoperable, thereby affecting the service life of the vacuum pump.
  • a sealing structure of a vacuum pump comprising a vacuum pump housing, the side of the vacuum pump housing is welded with a first mounting plate, and the front end of the vacuum pump housing is welded with a circle
  • a spline shaft is installed on the inner side of the vacuum pump housing
  • a spline keyboard is fixedly clamped on the outer side of the spline shaft
  • a side cover is fixedly installed on the front side of the vacuum pump housing
  • the inner side of the side cover is opened
  • There is a card slot the card slot is movably clamped with the ring, the top of the side cover is communicated with an air inlet pipe and an air outlet pipe respectively, and the air inlet pipe and the air outlet pipe are both penetrated with the side surface of the card slot.
  • a fixing seat is installed at the bottom of the vacuum pump housing, and a bottom plate is welded to the bottom of the fixing seat.
  • blades are welded on the side of the flower keyboard, and the number of blades is five.
  • a second mounting plate is welded to the side surface of the side cover, and the second mounting plate and the first mounting plate are fixedly connected by bolts.
  • the top ends of the air inlet pipe and the air outlet pipe are both threadedly connected with a threaded sleeve, and the top end of the threaded sleeve is movably connected with a connecting pipe through a bearing.
  • reinforcing ribs are welded on the inner side of the card slot, and the number of the reinforcing ribs is several.
  • the present invention provides a vacuum pump sealing structure, which has the following beneficial effects:
  • the vacuum pump is installed through the bottom of the vacuum pump housing through the fixing seat and the bottom plate, and the side of the vacuum pump housing is welded with the first mounting plate, and the first mounting plate is fixedly connected with the second mounting plate on the side cover by bolts, and the side cover
  • the inner side of the card slot is movably clamped to the ring welded on the front side of the vacuum pump housing.
  • the ring and the card slot can achieve a sealing effect and prevent dust from entering the vacuum pump from the gap between the side cover and the vacuum pump housing.
  • the inner side of the card slot is welded Several reinforcing ribs can increase the compressive strength of the side cover and increase its service life.
  • the air inlet pipe and the air outlet pipe are respectively connected through the top of the side cover, the air inlet pipe and the air outlet pipe are connected with the side wall of the slot, and the top ends of the air inlet pipe and the air outlet pipe are both threaded to the threaded sleeve, and the top of the threaded sleeve is movably connected by the bearing
  • the connecting pipe adopts the threaded sleeve and the air inlet pipe and air outlet pipe sealing structure, which can realize quick installation and avoid the combination of flange and sealing ring.
  • the sealing ring is made of rubber material which will wear out and cause leakage after long-term use.
  • Figure 1 is a front view of the sealing structure of a vacuum pump according to the present invention.
  • Figure 2 is a partial structural side view of the sealing structure of a vacuum pump of the present invention
  • Fig. 3 is a structural diagram of the inner side of the sealing structure side cover of a vacuum pump of the present invention.
  • Vacuum pump housing 2. Fixed seat; 3. Bottom plate; 4. First mounting plate; 5. Ring; 6. Spline shaft; 7. Spline keyboard; 8. Blade; 9. Side cover; 10. 11. Card slot; 11. Second mounting plate; 12. Air inlet pipe; 13. Threaded sleeve; 14. Connecting pipe; 15. Bearing; 16. Air outlet pipe; 17. Reinforcing ribs.
  • a sealing structure of a vacuum pump including a vacuum pump housing 1.
  • a fixing base 2 is installed at the bottom of the vacuum pump housing 1, a water-permeable hole is opened on the side of the fixing base 2, and a bottom plate 3 is welded to the bottom of the fixing base 2.
  • the side of the vacuum pump housing 1 is welded with a first mounting plate 4, and the front end of the vacuum pump housing 1 is welded with a ring 5, the diameter of the ring 5 is smaller than the diameter of the slot 10, and the inside of the vacuum pump housing 1 is installed
  • the spline shaft 6, the outer side of the spline shaft 6 is fixedly clamped with a spline keyboard 7, the side of the spline keyboard 7 is welded with blades 8, the number of blades 8 is five, and the front side of the vacuum pump housing 1 is fixedly installed with a side cover 9 ,
  • the side cover 9 is welded with a second mounting plate 11 on the side, the second mounting plate 11 and the first mounting plate 4 are fixedly connected by bolts, the inner side of the side cover 9 is provided with a card slot 10, and the inner side of the card slot 10 is welded with a reinforcing rib 17.
  • the number of reinforcing ribs 17 is several. Several reinforcing ribs 17 welded on the inside of the slot 10 can increase the compressive strength of the side cover 9 and increase its service life.
  • the slot 10 is movably clamped with the ring 5, and the ring 5 Cooperate with the card slot 10 to achieve a sealing effect and prevent dust from entering the vacuum pump from the gap between the side cover 9 and the vacuum pump housing 1.
  • the top of the side cover 9 communicates with the air inlet pipe 12 and the air outlet pipe 16, and the air inlet pipe 12 and The air outlet pipe 16 is made of stainless steel.
  • the air inlet pipe 12 and the air outlet pipe 16 are connected with the side of the slot 10 to facilitate air exchange.
  • the top ends of the air inlet pipe 12 and the air outlet pipe 16 are both threaded with a threaded sleeve 13, which adopts threaded sleeves. 13 and the air inlet pipe 12 and the air outlet pipe 16 sealed structure, can realize quick installation, and avoid the use of flange and sealing ring combination, the sealing ring is made of rubber material after long-term use, it will wear and cause leakage, the top of the threaded sleeve 13 is movably connected by the bearing 15 There is a connecting pipe 14, and the connecting pipe 14 serves as a connection between the air inlet pipe 12 and the air outlet pipe 16 for exhaust and air extraction.
  • the bottom of the vacuum pump housing 1 is installed through the fixing seat 2 and the bottom plate 3, and the side of the vacuum pump housing 1 is welded to the first mounting plate 4, and the first mounting plate 4 is bolted to the second mounting on the side cover 9
  • the plate 11 is fixedly connected, and the inside of the groove 10 opened in the side cover 9 is movably clamped to the ring 5 welded on the front side of the vacuum pump housing 1.
  • the ring 5 and the groove 10 can achieve a sealing effect and avoid dust from the side cover 9.
  • the vacuum pump enters into the gap between the vacuum pump casing 1 and the inside of the slot 10 is welded with several reinforcing ribs 17 to increase the compressive strength of the side cover 9 and increase its service life.
  • the top of the side cover 9 is connected to the air inlet pipe 12 and the air outlet pipe 16 respectively.
  • the inlet pipe 12 and the outlet pipe 16 are penetrated with the side wall of the slot 10, and the top ends of the inlet pipe 12 and the outlet pipe 16 are both threaded to the threaded sleeve 13, and the top of the threaded sleeve 13 is movably connected to the connecting pipe 14 through the bearing 15.
  • the threaded sleeve is adopted.
  • the sealing ring is rubber material will wear and cause leakage after long-term use, solve the problem of dust during the operation of the vacuum pump
  • the pumped gas enters the oil-sealed vacuum pump and is mixed in the pump oil, it will accelerate the wear of the parts in the pump cavity like an abrasive, cause wear and damage to the vacuum pump rotor and pump cavity, block the oil circuit or make the vacuum pump unable to operate, thereby affecting the vacuum pump The problem of service life.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

A sealing structure for a vacuum pump. The sealing structure for a vacuum pump comprises a vacuum pump housing (1), a first mounting plate (4) is welded on a side face of the vacuum pump housing (1), a circular ring (5) is welded on the front end of the vacuum pump housing (1), a spline shaft (6) is mounted on the inner side of the vacuum pump housing (1), a spline disc (7) is fixedly snapped fitted to the outer side of the spline shaft (6), a side cover (9) is fixedly mounted on the front side of the vacuum pump housing (1), and the inner side of the side cover (9) is provided with a snap groove (10). The first mounting plate (4) is welded on a side face of the vacuum pump housing (1), the first mounting plate (4) is fixedly connected to a second mounting plate (11) on the side cover (9) by means of bolts, the circular ring (5) welded on the front side of the vacuum pump housing (1) is movably snap-fitted to the inner side of the snap groove (10) provided on the inner side of the side cover (9), and the circular ring (5) cooperates with the snap groove (10), so as to achieve a sealing effect, preventing dust from entering the vacuum pump from a gap between the side cover (9) and the vacuum pump housing (1), and several reinforcing ribs (17) are welded on the inner side of the snap groove (10), increasing the compressive strength of the side cover (9), prolonging the service life of the side cover.

Description

一种真空泵的密封结构Sealing structure of vacuum pump 技术领域Technical field
本发明涉及真空泵技术领域，具体为一种真空泵的密封结构。The invention relates to the technical field of vacuum pumps, in particular to a sealing structure of a vacuum pump.
背景技术Background technique
真空泵是指利用机械、物理、化学或物理化学的方法对被抽容器进行抽气而获得真空的器件或设备。通俗来讲，真空泵是用各种方法在某一封闭空间中改善、产生和维持真空的装置，按真空泵的工作原理，真空泵基本上可以分为两种类型，即气体捕集泵和气体传输泵。其广泛用于冶金、化工、食品、电子镀膜等行业。A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical, or physical chemical methods to pump air from the pumped container to obtain a vacuum. Generally speaking, a vacuum pump is a device that uses various methods to improve, generate and maintain vacuum in a closed space. According to the working principle of vacuum pumps, vacuum pumps can be basically divided into two types, namely, gas trapping pumps and gas transmission pumps. . It is widely used in metallurgy, chemical, food, electronic coating and other industries.
在真空泵运行过程中，如果粉尘随被抽气体进入油封真空泵内混在泵油中，会像研磨剂一样加速泵腔内零件的磨损，对真空泵转子和泵腔造成磨损和破坏，堵塞油路或者使真空泵无法运行，从而影响真空泵的使用寿命。During the operation of the vacuum pump, if the dust enters the oil-sealed vacuum pump with the pumped gas and is mixed in the pump oil, it will accelerate the wear of the parts in the pump cavity like an abrasive, cause wear and damage to the vacuum pump rotor and pump cavity, block the oil circuit or cause The vacuum pump cannot be operated, which affects the service life of the vacuum pump.
发明内容Summary of the invention
(一)解决的技术问题(1) Technical problems solved
针对现有技术的不足，本发明提供了一种真空泵的密封结构，具备密封性好等优点，解决了在真空泵运行过程中，如果粉尘随被抽气体进入油封真空泵内混在泵油中，会像研磨剂一样加速泵腔内零件的磨损，对真空泵转子和泵腔造成磨损和破坏，堵塞油路或者使真空泵无法运行，从而影响真空泵的使用寿命的问题。Aiming at the shortcomings of the prior art, the present invention provides a vacuum pump sealing structure, which has the advantages of good sealing performance, etc., and solves the problem that if dust enters the oil-sealed vacuum pump with the pumped gas and is mixed in the pump oil during the operation of the vacuum pump Abrasives speed up the wear of the parts in the pump cavity, cause wear and damage to the vacuum pump rotor and pump cavity, block the oil circuit or make the vacuum pump inoperable, thereby affecting the service life of the vacuum pump.
(二)技术方案(2) Technical solution
为实现上述密封性好目的，本发明提供如下技术方案：一种真空泵的密封结构，包括真空泵壳体，所述真空泵壳体的侧面焊接有第一安装板，且真空泵壳体的前端焊接有圆环，所述真空泵壳体的内侧安装有花键轴，所述花键轴的外侧固定卡接有花键盘，所述真空泵壳体的前侧固定安装有侧盖，所述侧盖的内侧开设有卡槽，所述卡槽与圆环活动卡接，所述侧盖的顶部连通 分别连通有进气管和出气管，所述进气管和出气管均与卡槽的侧面贯通。In order to achieve the above-mentioned purpose of good sealing performance, the present invention provides the following technical solution: a sealing structure of a vacuum pump, comprising a vacuum pump housing, the side of the vacuum pump housing is welded with a first mounting plate, and the front end of the vacuum pump housing is welded with a circle A spline shaft is installed on the inner side of the vacuum pump housing, a spline keyboard is fixedly clamped on the outer side of the spline shaft, a side cover is fixedly installed on the front side of the vacuum pump housing, and the inner side of the side cover is opened There is a card slot, the card slot is movably clamped with the ring, the top of the side cover is communicated with an air inlet pipe and an air outlet pipe respectively, and the air inlet pipe and the air outlet pipe are both penetrated with the side surface of the card slot.
优选的，所述真空泵壳体的底部安装有固定座，所述固定座的底部焊接有底板。Preferably, a fixing seat is installed at the bottom of the vacuum pump housing, and a bottom plate is welded to the bottom of the fixing seat.
优选的，所述花键盘的侧面焊接有叶片，所述叶片的数量为五个。Preferably, blades are welded on the side of the flower keyboard, and the number of blades is five.
优选的，所述侧盖的侧面焊接有第二安装板，所述第二安装板与第一安装板通过螺栓固定连接。Preferably, a second mounting plate is welded to the side surface of the side cover, and the second mounting plate and the first mounting plate are fixedly connected by bolts.
优选的，所述进气管和出气管的顶端均通过螺纹连接有螺纹套，所述螺纹套的顶端通过轴承活动连接有连接管。Preferably, the top ends of the air inlet pipe and the air outlet pipe are both threadedly connected with a threaded sleeve, and the top end of the threaded sleeve is movably connected with a connecting pipe through a bearing.
优选的，所述卡槽的内侧焊接有加强筋，所述加强筋的数量为若干条。Preferably, reinforcing ribs are welded on the inner side of the card slot, and the number of the reinforcing ribs is several.
与现有技术相比，本发明提供了一种真空泵的密封结构，具备以下有益效果：Compared with the prior art, the present invention provides a vacuum pump sealing structure, which has the following beneficial effects:
1、本发明通过真空泵壳体底部通过固定座和底板对真空泵进行安装，且真空泵壳体侧面焊接第一安装板，第一安装板通过螺栓与侧盖上的第二安装板固定连接，侧盖内侧开设的卡槽内侧活动卡接真空泵壳体前侧焊接的圆环，圆环与卡槽配合可实现密封效果，可避免粉尘从侧盖与真空泵壳体的缝隙处进入真空泵，卡槽内侧焊接若干个加强筋，可增加侧盖的抗压强度，增加其使用寿命。1. In the present invention, the vacuum pump is installed through the bottom of the vacuum pump housing through the fixing seat and the bottom plate, and the side of the vacuum pump housing is welded with the first mounting plate, and the first mounting plate is fixedly connected with the second mounting plate on the side cover by bolts, and the side cover The inner side of the card slot is movably clamped to the ring welded on the front side of the vacuum pump housing. The ring and the card slot can achieve a sealing effect and prevent dust from entering the vacuum pump from the gap between the side cover and the vacuum pump housing. The inner side of the card slot is welded Several reinforcing ribs can increase the compressive strength of the side cover and increase its service life.
2、本发明通过侧盖顶端分别连通进气管和出气管，进气管和出气管均与卡槽侧壁贯通，且进气管和出气管顶端均通过螺纹连接螺纹套，螺纹套顶端通过轴承活动连接连接管，采用螺纹套与进气管和出气管密封结构，可实现快速安装，且避免采用法兰与密封圈组合，密封圈为橡胶材质长期使用后会磨损造成泄漏。2. In the present invention, the air inlet pipe and the air outlet pipe are respectively connected through the top of the side cover, the air inlet pipe and the air outlet pipe are connected with the side wall of the slot, and the top ends of the air inlet pipe and the air outlet pipe are both threaded to the threaded sleeve, and the top of the threaded sleeve is movably connected by the bearing The connecting pipe adopts the threaded sleeve and the air inlet pipe and air outlet pipe sealing structure, which can realize quick installation and avoid the combination of flange and sealing ring. The sealing ring is made of rubber material which will wear out and cause leakage after long-term use.
附图说明Description of the drawings
图1为本发明一种真空泵的密封结构结构主视图；Figure 1 is a front view of the sealing structure of a vacuum pump according to the present invention;
图2为本发明一种真空泵的密封结构局部结构侧视图；Figure 2 is a partial structural side view of the sealing structure of a vacuum pump of the present invention;
图3为本发明一种真空泵的密封结构侧盖内侧结构图。Fig. 3 is a structural diagram of the inner side of the sealing structure side cover of a vacuum pump of the present invention.
其中：1、真空泵壳体；2、固定座；3、底板；4、第一安装板；5、圆环；6、花键轴；7、花键盘；8、叶片；9、侧盖；10、卡槽；11、第二安装板；12、进气管；13、螺纹套；14、连接管；15、轴承；16、出气管；17、加强筋。Among them: 1. Vacuum pump housing; 2. Fixed seat; 3. Bottom plate; 4. First mounting plate; 5. Ring; 6. Spline shaft; 7. Spline keyboard; 8. Blade; 9. Side cover; 10. 11. Card slot; 11. Second mounting plate; 12. Air inlet pipe; 13. Threaded sleeve; 14. Connecting pipe; 15. Bearing; 16. Air outlet pipe; 17. Reinforcing ribs.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
请参阅图1-3，一种真空泵的密封结构，包括真空泵壳体1，真空泵壳体1的底部安装有固定座2，固定座2侧面开设有透水孔，固定座2的底部焊接有底板3，真空泵壳体1的侧面焊接有第一安装板4，且真空泵壳体1的前端焊接有圆环5，圆环5的直径值小于卡槽10的直径值，真空泵壳体1的内侧安装有花键轴6，花键轴6的外侧固定卡接有花键盘7，花键盘7的侧面焊接有叶片8，叶片8的数量为五个，真空泵壳体1的前侧固定安装有侧盖9，侧盖9的侧面焊接有第二安装板11，第二安装板11与第一安装板4通过螺栓固定连接，侧盖9的内侧开设有卡槽10，卡槽10的内侧焊接有加强筋17，加强筋17的数量为若干条，卡槽10内侧焊接的若干个加强筋17可增加侧盖9的抗压强度，增加其使用寿命，卡槽10与圆环5活动卡接，圆环5与卡槽10配合可实现密封效果，可避免粉尘从侧盖9与真空泵壳体1的缝隙处进入真空泵，侧盖9的顶部连通分别连通有进气管12和出气管16，进气管12和出气管16均为不锈钢材质，进气管12和出气管16均与卡槽10的侧面贯通，可方便换气，进气管12和出气管16的顶端均通过螺纹连接有螺纹套13，采用螺纹套13与进气管12和出气管16密封结构，可实现快速安装，且避免采 用法兰与密封圈组合，密封圈为橡胶材质长期使用后会磨损造成泄漏，螺纹套13的顶端通过轴承15活动连接有连接管14，连接管14为进气管12和出气管16起到排气和抽气连通作用。Please refer to Figure 1-3, a sealing structure of a vacuum pump, including a vacuum pump housing 1. A fixing base 2 is installed at the bottom of the vacuum pump housing 1, a water-permeable hole is opened on the side of the fixing base 2, and a bottom plate 3 is welded to the bottom of the fixing base 2. , The side of the vacuum pump housing 1 is welded with a first mounting plate 4, and the front end of the vacuum pump housing 1 is welded with a ring 5, the diameter of the ring 5 is smaller than the diameter of the slot 10, and the inside of the vacuum pump housing 1 is installed The spline shaft 6, the outer side of the spline shaft 6 is fixedly clamped with a spline keyboard 7, the side of the spline keyboard 7 is welded with blades 8, the number of blades 8 is five, and the front side of the vacuum pump housing 1 is fixedly installed with a side cover 9 , The side cover 9 is welded with a second mounting plate 11 on the side, the second mounting plate 11 and the first mounting plate 4 are fixedly connected by bolts, the inner side of the side cover 9 is provided with a card slot 10, and the inner side of the card slot 10 is welded with a reinforcing rib 17. The number of reinforcing ribs 17 is several. Several reinforcing ribs 17 welded on the inside of the slot 10 can increase the compressive strength of the side cover 9 and increase its service life. The slot 10 is movably clamped with the ring 5, and the ring 5 Cooperate with the card slot 10 to achieve a sealing effect and prevent dust from entering the vacuum pump from the gap between the side cover 9 and the vacuum pump housing 1. The top of the side cover 9 communicates with the air inlet pipe 12 and the air outlet pipe 16, and the air inlet pipe 12 and The air outlet pipe 16 is made of stainless steel. The air inlet pipe 12 and the air outlet pipe 16 are connected with the side of the slot 10 to facilitate air exchange. The top ends of the air inlet pipe 12 and the air outlet pipe 16 are both threaded with a threaded sleeve 13, which adopts threaded sleeves. 13 and the air inlet pipe 12 and the air outlet pipe 16 sealed structure, can realize quick installation, and avoid the use of flange and sealing ring combination, the sealing ring is made of rubber material after long-term use, it will wear and cause leakage, the top of the threaded sleeve 13 is movably connected by the bearing 15 There is a connecting pipe 14, and the connecting pipe 14 serves as a connection between the air inlet pipe 12 and the air outlet pipe 16 for exhaust and air extraction.
在使用时，真空泵壳体1底部通过固定座2和底板3对真空泵进行安装，且真空泵壳体1侧面焊接第一安装板4，第一安装板4通过螺栓与侧盖9上的第二安装板11固定连接，侧盖9内侧开设的卡槽10内侧活动卡接真空泵壳体1前侧焊接的圆环5，圆环5与卡槽10配合可实现密封效果，可避免粉尘从侧盖9与真空泵壳体1的缝隙处进入真空泵，卡槽10内侧焊接若干个加强筋17，可增加侧盖9的抗压强度，增加其使用寿命，侧盖9顶端分别连通进气管12和出气管16，进气管12和出气管16均与卡槽10侧壁贯通，且进气管12和出气管16顶端均通过螺纹连接螺纹套13，螺纹套13顶端通过轴承15活动连接连接管14，采用螺纹套13与进气管12和出气管16密封结构，可实现快速安装，且避免采用法兰与密封圈组合，密封圈为橡胶材质长期使用后会磨损造成泄漏，解决了在真空泵运行过程中，如果粉尘随被抽气体进入油封真空泵内混在泵油中，会像研磨剂一样加速泵腔内零件的磨损，对真空泵转子和泵腔造成磨损和破坏，堵塞油路或者使真空泵无法运行，从而影响真空泵的使用寿命的问题。In use, the bottom of the vacuum pump housing 1 is installed through the fixing seat 2 and the bottom plate 3, and the side of the vacuum pump housing 1 is welded to the first mounting plate 4, and the first mounting plate 4 is bolted to the second mounting on the side cover 9 The plate 11 is fixedly connected, and the inside of the groove 10 opened in the side cover 9 is movably clamped to the ring 5 welded on the front side of the vacuum pump housing 1. The ring 5 and the groove 10 can achieve a sealing effect and avoid dust from the side cover 9. The vacuum pump enters into the gap between the vacuum pump casing 1 and the inside of the slot 10 is welded with several reinforcing ribs 17 to increase the compressive strength of the side cover 9 and increase its service life. The top of the side cover 9 is connected to the air inlet pipe 12 and the air outlet pipe 16 respectively. , The inlet pipe 12 and the outlet pipe 16 are penetrated with the side wall of the slot 10, and the top ends of the inlet pipe 12 and the outlet pipe 16 are both threaded to the threaded sleeve 13, and the top of the threaded sleeve 13 is movably connected to the connecting pipe 14 through the bearing 15. The threaded sleeve is adopted. 13 and the air inlet pipe 12 and the air outlet pipe 16 sealed structure, can achieve quick installation, and avoid the use of flange and sealing ring combination, the sealing ring is rubber material will wear and cause leakage after long-term use, solve the problem of dust during the operation of the vacuum pump As the pumped gas enters the oil-sealed vacuum pump and is mixed in the pump oil, it will accelerate the wear of the parts in the pump cavity like an abrasive, cause wear and damage to the vacuum pump rotor and pump cavity, block the oil circuit or make the vacuum pump unable to operate, thereby affecting the vacuum pump The problem of service life.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. And variations, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

  1. 一种真空泵的密封结构，包括真空泵壳体(1)，其特征在于：所述真空泵壳体(1)的侧面焊接有第一安装板(4)，且真空泵壳体(1)的前端焊接有圆环(5)，所述真空泵壳体(1)的内侧安装有花键轴(6)，所述花键轴(6)的外侧固定卡接有花键盘(7)，所述真空泵壳体(1)的前侧固定安装有侧盖(9)，所述侧盖(9)的内侧开设有卡槽(10)，所述卡槽(10)与圆环(5)活动卡接，所述侧盖(9)的顶部连通分别连通有进气管(12)和出气管(16)，所述进气管(12)和出气管(16)均与卡槽(10)的侧面贯通。A sealing structure of a vacuum pump, comprising a vacuum pump housing (1), characterized in that: the side of the vacuum pump housing (1) is welded with a first mounting plate (4), and the front end of the vacuum pump housing (1) is welded with A circular ring (5), a spline shaft (6) is installed on the inner side of the vacuum pump housing (1), a spline keyboard (7) is fixedly clamped on the outer side of the spline shaft (6), and the vacuum pump housing (1) A side cover (9) is fixedly installed on the front side of the side cover (9), a card slot (10) is opened on the inside of the side cover (9), and the card slot (10) is movably clamped with the ring (5), so The top of the side cover (9) is communicated with an air inlet pipe (12) and an air outlet pipe (16) respectively, and both the air inlet pipe (12) and the air outlet pipe (16) penetrate the side surface of the slot (10).
  2. 根据权利要求1所述的一种真空泵的密封结构，其特征在于：所述真空泵壳体(1)的底部安装有固定座(2)，所述固定座(2)的底部焊接有底板(3)。The sealing structure of a vacuum pump according to claim 1, characterized in that: a fixing seat (2) is installed at the bottom of the vacuum pump housing (1), and a bottom plate (3) is welded to the bottom of the fixing seat (2). ).
  3. 根据权利要求1所述的一种真空泵的密封结构，其特征在于：所述花键盘(7)的侧面焊接有叶片(8)，所述叶片(8)的数量为五个。The sealing structure of a vacuum pump according to claim 1, characterized in that: the side of the flower keyboard (7) is welded with blades (8), and the number of the blades (8) is five.
  4. 根据权利要求1所述的一种真空泵的密封结构，其特征在于：所述侧盖(9)的侧面焊接有第二安装板(11)，所述第二安装板(11)与第一安装板(4)通过螺栓固定连接。The sealing structure of a vacuum pump according to claim 1, characterized in that: a second mounting plate (11) is welded to the side of the side cover (9), and the second mounting plate (11) is connected to the first mounting plate (11). The plates (4) are fixedly connected by bolts.
  5. 根据权利要求1所述的一种真空泵的密封结构，其特征在于：所述进气管(12)和出气管(16)的顶端均通过螺纹连接有螺纹套(13)，所述螺纹套(13)的顶端通过轴承(15)活动连接有连接管(14)。The sealing structure of a vacuum pump according to claim 1, characterized in that: the top ends of the inlet pipe (12) and the outlet pipe (16) are both threadedly connected with a threaded sleeve (13), and the threaded sleeve (13) A connecting pipe (14) is movably connected to the top end of the) through a bearing (15).
  6. 根据权利要求1所述的一种真空泵的密封结构，其特征在于：所述卡槽(10)的内侧焊接有加强筋(17)，所述加强筋(17)的数量为若干条。The vacuum pump sealing structure according to claim 1, characterized in that: the inner side of the slot (10) is welded with reinforcing ribs (17), and the number of the reinforcing ribs (17) is several.
PCT/CN2020/116391 2019-11-26 2020-09-21 Sealing structure for vacuum pump WO2021103773A1 (en)

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CN110925206A (en) * 2019-11-26 2020-03-27 王煜 Sealing structure of vacuum pump
CN112377410A (en) * 2020-11-10 2021-02-19 湖南创源生物科技有限公司 Sealed effectual mechanical vacuum pump

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