CN106194816A - Vertical single-stage centrifugal pump thin oil lubricating device - Google Patents
Vertical single-stage centrifugal pump thin oil lubricating device Download PDFInfo
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- CN106194816A CN106194816A CN201610742918.2A CN201610742918A CN106194816A CN 106194816 A CN106194816 A CN 106194816A CN 201610742918 A CN201610742918 A CN 201610742918A CN 106194816 A CN106194816 A CN 106194816A
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 47
- 238000005461 lubrication Methods 0.000 claims abstract description 19
- 125000006850 spacer group Chemical group 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 21
- 238000012423 maintenance Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 152
- 239000007788 liquid Substances 0.000 description 28
- 239000010687 lubricating oil Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明公开了一种单级立式离心泵稀油润滑装置，主要包括泵轴、轴承架、下轴承盖、上轴承盖、隔离套、下轴承、上轴承、机械油封和轴承隔离器，其特征在于设有压油套和压油叶片，轴承架内的上轴承和下轴承间设有回油冷却腔，轴承架内的上轴承上部设有上油腔，轴承架内的下轴承下部设有油池，轴承架侧壁轴向设有导油通槽，下轴承盖中心设有压油腔，一侧端面轴向设有压油出口，压油套固定在油池内的泵轴上，压油套下端设有压油叶片，油池、压油腔、压油出口、导油通槽、上油腔和回油冷却腔形成循环润滑冷却油路，具有结构新颖、结构紧凑、性能可靠、润滑效果好、冷却效果好、设备成本低、维护方便等优点。
The invention discloses a thin oil lubricating device for a single-stage vertical centrifugal pump, which mainly includes a pump shaft, a bearing frame, a lower bearing cover, an upper bearing cover, a spacer sleeve, a lower bearing, an upper bearing, a mechanical oil seal and a bearing isolator. It is characterized in that it is equipped with an oil pressure sleeve and an oil pressure vane, an oil return cooling chamber is provided between the upper bearing and the lower bearing in the bearing frame, the upper part of the upper bearing in the bearing frame is provided with an oil chamber, and the lower part of the bearing frame is provided with an oil chamber. There is an oil pool, the side wall of the bearing frame is provided with an oil guide groove in the axial direction, the center of the lower bearing cover is provided with an oil pressure chamber, and one end face is provided with an oil pressure outlet in the axial direction, and the oil pressure sleeve is fixed on the pump shaft in the oil pool. The lower end of the oil pressure sleeve is equipped with an oil pressure vane, and the oil pool, oil pressure chamber, oil pressure outlet, oil guide channel, oil upper chamber and oil return cooling chamber form a circulating lubrication and cooling oil circuit, which has novel structure, compact structure and reliable performance , Good lubricating effect, good cooling effect, low equipment cost, easy maintenance and so on.
Description
技术领域technical field
本发明涉及流体机械技术领域，具体地说是一种单级立式离心泵稀油润滑装置。The invention relates to the technical field of fluid machinery, in particular to a thin oil lubricating device for a single-stage vertical centrifugal pump.
背景技术Background technique
现有的单级立式离心泵轴承的润滑通常采用油脂润滑结构，这种结构受转速、温度、载荷等工况的限制，维护频率很高，为了减少维护频率，延长轴承的使用寿命，利用稀油润滑结构代替油脂润滑结构。The lubrication of existing single-stage vertical centrifugal pump bearings usually adopts a grease lubrication structure. This structure is limited by working conditions such as speed, temperature, and load, and the maintenance frequency is very high. In order to reduce the maintenance frequency and prolong the service life of the bearing, use Thin oil lubricated structure replaces grease lubricated structure.
经检索，CN97221433X公开了一种立式泵支承部件油润滑结构，其主要由一种轴承、挡油管、支承油套及轴承组成，支承油套依靠支承旋转，利用其离心力沿支承油套锥面，使其稀油由上部的排油孔甩出滴入润滑下部的轴承，这样稀油可连续不断的由上部的排油孔滴入下部的轴承，从而使轴承处于良好的润滑状态，这种结构的实质性不足是：由于轴承体在高速运转过程中产生热量，这种高温热量对轴承体严重影响了轴承体的使用寿命。After retrieval, CN97221433X discloses an oil lubrication structure for vertical pump support parts, which is mainly composed of a bearing, an oil retaining pipe, a support oil sleeve and a bearing. , so that the thin oil is thrown out from the upper oil drain hole and dripped into the lower bearing for lubrication, so that the thin oil can continuously drip from the upper oil drain hole into the lower bearing, so that the bearing is in a good lubrication state. The substantive deficiency of the structure is: because the bearing body generates heat during high-speed operation, this high-temperature heat seriously affects the service life of the bearing body.
CN2008200321534公开了一种立式泵用轴承箱轴承稀油润滑装置，其是由轴承箱体、动密封环、导油套、角接触球轴承组成，设置有把下轴承滚动体甩出的稀油收集并导入上轴承滚动体内的导油套，动密封环与封油套配合的内端面设有反向螺旋槽密封，轴承压盖上设有回油槽，轴承箱体内部开有使上部轴承溅出的油回到轴承箱油室的回油槽，轴承箱体下部集油室采用大腔结构，在实施时，稀油在轴承箱体中浸没1/2角接触轴承的滚动体，靠角接触球轴承滚动体产生泵送作用，形成流体运动，流体沿导油套导入深沟球轴承中，实现飞溅润滑，再通过轴承压盖上的回油槽导入轴承箱体内的集油室中，这种结构的实质性不足是：一是在泵轴运行时，由于角接触球轴承设在储油室内，泵轴的负载大；二是无法同时对泵轴两端的轴承箱体内的支承轴承进行同时润滑，并且，由于循环路径短，换热效率低、因此无法对润滑油进行冷却。CN2008200321534 discloses a bearing box bearing thin oil lubricating device for a vertical pump, which is composed of a bearing box body, a dynamic sealing ring, an oil guide sleeve, and an angular contact ball bearing, and is provided with thin oil for throwing out the lower bearing rolling body Collect and guide the oil guide sleeve in the rolling body of the upper bearing. The inner end surface of the dynamic seal ring and the oil seal sleeve is provided with a reverse spiral groove seal, and the bearing cover is provided with an oil return groove. The discharged oil returns to the oil return groove of the oil chamber of the bearing box. The oil collection chamber at the lower part of the bearing box adopts a large cavity structure. The rolling elements of ball bearings produce pumping action to form fluid movement. The fluid is introduced into the deep groove ball bearing along the oil guide sleeve to realize splash lubrication, and then is introduced into the oil collection chamber in the bearing box through the oil return groove on the bearing gland. The substantive shortcomings of the structure are: first, when the pump shaft is running, because the angular contact ball bearing is located in the oil storage chamber, the load on the pump shaft is large; second, it is impossible to simultaneously lubricate the supporting bearings in the bearing housings at both ends of the pump shaft , and, due to the short circulation path and low heat transfer efficiency, the lubricating oil cannot be cooled.
CN2010206691123公开了一种立式高温泵轴承稀油强制循环润滑冷却结构的实用新型专利，是由储油室连通套接在轴套上的角接触球轴承组成，储油室是由挡油套与轴承体、冷油室盖组成的一个可储油的空腔，轴套的下端位于储油室中，轴套内锥度孔和角接触球轴承连通储油室形成回路,在使用时，旋转轴带动轴套旋转，在离心力的作用下，润滑油沿轴套内壁上移至角接触球轴承上方的孔中流出，从上至下润滑角接触球轴承，再经过冷油盘管冷却后回到储油室，进而形成对角接触球轴承的稀油强制循环润滑和冷却，其优点是冷却效果显著，其实质性不足是：一是在泵轴运行时，由于角接触球轴承设在储油室内，泵轴的负载大；二是不能同时对泵轴两端的轴承进行润滑和冷却，只能在两端的轴承箱内分别设置，导致成本高。CN2010206691123 discloses a utility model patent for a thin oil forced circulation lubrication cooling structure of a vertical high temperature pump bearing. The bearing body and the cold oil chamber cover form a cavity that can store oil. The lower end of the shaft sleeve is located in the oil storage chamber. The taper hole in the shaft sleeve and the angular contact ball bearing are connected to the oil storage chamber to form a circuit. When in use, the rotating shaft Drive the shaft sleeve to rotate, under the action of centrifugal force, the lubricating oil moves up the inner wall of the shaft sleeve to the hole above the angular contact ball bearing and flows out, lubricating the angular contact ball bearing from top to bottom, and then returns to the bearing after being cooled by the cooling oil coil The oil storage chamber, and then form the thin oil forced circulation lubrication and cooling of the diagonal contact ball bearings. Its advantage is that the cooling effect is remarkable. Indoors, the load on the pump shaft is large; second, the bearings at both ends of the pump shaft cannot be lubricated and cooled at the same time, and can only be installed separately in the bearing housings at both ends, resulting in high cost.
发明内容Contents of the invention
本发明的目的是解决上述现有技术的不足，提供一种结构新颖、结构紧凑、性能可靠、润滑效果好、冷却效果好、设备成本低、维护方便的单级立式离心泵稀油润滑装置。The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art, and provide a single-stage vertical centrifugal pump thin oil lubrication device with novel structure, compact structure, reliable performance, good lubricating effect, good cooling effect, low equipment cost and convenient maintenance .
本发明解决其技术问题所采用的技术方案是：The technical solution adopted by the present invention to solve its technical problems is:
一种单级立式离心泵稀油润滑装置，主要包括泵轴、轴承架、下轴承盖、上轴承盖、下轴承和上轴承，其特征在于设有压油套和压油叶片，所述轴承架内的上轴承和下轴承间设有回油冷却腔，轴承架内的上轴承上部设有上油腔，轴承架内的下轴承下部设有油池，所述轴承架侧壁轴向设有导油通槽，所述下轴承盖中心设有压油腔，一侧端面轴向设有压油出口，所述压油套经紧固螺钉固定在油池内的泵轴上，所述压油套下端圆周阵列设有压油叶片，所述压油叶片设置在压油腔内，所述油池、压油腔、压油出口、导油通槽、上油腔和回油冷却腔形成循环润滑冷却油路，当泵轴运行时，泵轴下端的压油套在泵轴的带动下旋转，带动压油叶片旋转，压油叶片对润滑油做功，油压驱动液体随着压油腔、压油出口进入导油通槽内，并沿导油通槽继续向上流动，当液体到达顶部的上油腔时，由于上轴承盖的密封作用，不会使液体继续向上，此时液体到达最高点并在重力作用下向下流动，由于液体在经过导油通槽时，使液体中的油温通过轴承架吸收散发一部分热量，因此，降温后的液体润滑上轴承后，在流经回油冷却腔，并通过回油冷却腔散发一部分热量，进而使液体以较低的油温润滑下轴承，在通过下轴承继续下流至油池，并以此进行往复循环润滑和冷却，在这个循环过程中，泵轴在轴承腔内的旋转可以使其接触到的润滑油具有已定的圆周速度，润滑油在重力加速度和圆周速度的双重作用下达到淋浴式接触轴承滚珠的效果，显著降低了泵轴的负载，达到性能可靠、润滑效果好、冷却效果好、设备成本低的作用。A single-stage vertical centrifugal pump thin oil lubricating device mainly includes a pump shaft, a bearing frame, a lower bearing cover, an upper bearing cover, a lower bearing and an upper bearing, and is characterized in that it is provided with an oil pressure sleeve and an oil pressure blade. There is an oil return cooling cavity between the upper bearing and the lower bearing in the bearing frame, the upper part of the upper bearing in the bearing frame is provided with an upper oil cavity, and the lower part of the lower bearing in the bearing frame is provided with an oil pool, and the side wall of the bearing frame is axially There is an oil guide groove, the center of the lower bearing cover is provided with a pressure oil chamber, and one end face is axially provided with a pressure oil outlet, and the pressure oil sleeve is fixed on the pump shaft in the oil pool through fastening screws. Oil pressure blades are arranged in a circumferential array at the lower end of the oil pressure sleeve, and the oil pressure blades are arranged in the oil pressure cavity. A circulating lubricating and cooling oil circuit is formed. When the pump shaft is running, the pressure oil sleeve at the lower end of the pump shaft rotates under the drive of the pump shaft, driving the oil pressure vane to rotate. chamber and pressure oil outlet enter the oil guide groove, and continue to flow upward along the oil guide groove. When the liquid reaches the upper oil chamber at the top, due to the sealing effect of the upper bearing cap, the liquid will not continue upward. At this time, the liquid It reaches the highest point and flows downward under the action of gravity. When the liquid passes through the oil guide groove, the oil temperature in the liquid absorbs and dissipates part of the heat through the bearing frame. Therefore, after the cooled liquid lubricates the upper bearing, it flows through Return to the oil cooling chamber, and dissipate part of the heat through the oil return cooling chamber, so that the liquid lubricates the lower bearing at a lower oil temperature, and then flows down to the oil pool through the lower bearing, and performs reciprocating cycle lubrication and cooling. During the circulation process, the rotation of the pump shaft in the bearing cavity can make the lubricating oil in contact with a predetermined peripheral speed, and the lubricating oil can reach the effect of showering contact with the bearing balls under the double action of gravity acceleration and peripheral speed, which can be significantly reduced. The load on the pump shaft is reduced to achieve reliable performance, good lubricating effect, good cooling effect and low equipment cost.
本发明可在所述上轴承盖上端的泵轴上设有冷却风扇，以利于通过风扇对进入上油腔内的液体进行冷却，达到显著提高轴承冷却的作用。In the present invention, a cooling fan can be provided on the pump shaft at the upper end of the upper bearing cap, so as to facilitate the cooling of the liquid entering the oil chamber through the fan, so as to significantly improve the cooling effect of the bearing.
本发明可在所述下轴承盖下端设有隔离套，所述隔离套经O型密封圈与下轴承盖密封连接，以达到既能防止润滑油泄漏，又能起到对压油套保护的作用。In the present invention, a spacer sleeve can be provided at the lower end of the lower bearing cap, and the spacer sleeve is sealed and connected with the lower bearing cap through an O-shaped sealing ring, so as to not only prevent lubricating oil from leaking, but also protect the pressure oil sleeve. effect.
本发明所述上轴承盖经机械油封与泵轴密封连接，以达到防尘、防水和防油泄漏的作用。The upper bearing cover of the present invention is sealed and connected with the pump shaft through a mechanical oil seal, so as to achieve the functions of dustproof, waterproof and oil leakage prevention.
本发明还可在所述油池一侧设有恒位油杯，所述恒位油杯经油管与油池相连通，以利于通过恒位油杯自动补充润滑油，保证油池的正常液位，达到维护方便的作用。In the present invention, a constant-level oil cup can also be provided on one side of the oil pool, and the constant-level oil cup is connected with the oil pool through an oil pipe, so as to facilitate automatic replenishment of lubricating oil through the constant-level oil cup and ensure the normal liquid level of the oil pool , to achieve the role of easy maintenance.
本发明由于采用上述结构，具有结构新颖、结构紧凑、性能可靠、润滑效果好、冷却效果好、设备成本低、维护方便等优点。Due to the adoption of the above structure, the present invention has the advantages of novel structure, compact structure, reliable performance, good lubricating effect, good cooling effect, low equipment cost, convenient maintenance and the like.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
图2是本发明中压油套和压油叶片的结构示意图。Fig. 2 is a structural schematic diagram of the medium pressure oil jacket and the oil pressure vane of the present invention.
图3是图2的仰视图。FIG. 3 is a bottom view of FIG. 2 .
附图标记：泵轴1、轴承架2、下轴承盖3、上轴承盖4、下轴承5、上轴承6、压油套7、压油叶片8、回油冷却腔9、上油腔10、油池11、导油通槽12、压油腔13、压油出口14、冷却风扇15、风扇罩16、隔离套17、机械油封18、恒位油杯19。Reference signs: pump shaft 1, bearing frame 2, lower bearing cover 3, upper bearing cover 4, lower bearing 5, upper bearing 6, oil pressure sleeve 7, oil pressure blade 8, oil return cooling chamber 9, upper oil chamber 10 , Oil pool 11, oil guide channel 12, pressure oil cavity 13, pressure oil outlet 14, cooling fan 15, fan cover 16, isolation sleeve 17, mechanical oil seal 18, constant oil cup 19.
具体实施方式detailed description
下面结合附图对本发明进一步说明：Below in conjunction with accompanying drawing, the present invention is further described:
如附图所示，一种单级立式离心泵稀油润滑装置，主要包括泵轴1、轴承架2、下轴承盖3、上轴承盖4、下轴承5和上轴承6，其特征在于设有压油套7和压油叶片8，所述轴承架2内的上轴承6和下轴承5间设有回油冷却腔9，轴承架2内的上轴承6上部设有上油腔10，轴承架2内的下轴承5下部设有油池11，所述轴承架2侧壁轴向设有导油通槽12，所述下轴承盖3中心设有压油腔13，一侧端面轴向设有压油出口14，所述压油套7经紧固螺钉固定在油池11内的泵轴1上，所述压油套7下端圆周阵列设有压油叶片8，所述压油叶片8设置在压油腔13内，所述油池11、压油腔13、压油出口14、导油通槽12、上油腔10和回油冷却腔9形成循环润滑冷却油路，当泵轴1运行时，泵轴1下端的压油套7在泵轴1的带动下旋转，带动压油叶片8旋转，压油叶片8对润滑油做功，油压驱动液体随着压油腔13、压油出口14进入导油通槽12内，并沿导油通槽12继续向上流动，当液体到达顶部的上油腔10时，由于上轴承盖4的密封作用，不会使液体继续向上，此时液体到达最高点并在重力作用下向下流动，由于液体在经过导油通槽12时，使液体中的油温通过轴承架2吸收散发一部分热量，因此，降温后的液体润滑上轴承6后，在流经回油冷却腔9，并通过回油冷却腔9散发一部分热量，进而使液体以较低的油温润滑下轴承5，在通过下轴承5继续下流至油池11，并以此进行往复循环润滑和冷却，在这个循环过程中，泵轴1在上油腔10内的旋转可以使其接触到的润滑油具有一定的圆周速度，润滑油在重力加速度和圆周速度的双重作用下达到淋浴式接触轴承滚珠的效果，显著降低了泵轴的负载，达到性能可靠、润滑效果好、冷却效果好、设备成本低的作用。As shown in the accompanying drawings, a single-stage vertical centrifugal pump thin oil lubrication device mainly includes a pump shaft 1, a bearing frame 2, a lower bearing cover 3, an upper bearing cover 4, a lower bearing 5 and an upper bearing 6, and is characterized in that An oil pressure sleeve 7 and an oil pressure vane 8 are provided, an oil return cooling chamber 9 is provided between the upper bearing 6 and the lower bearing 5 in the bearing frame 2, and an oil upper chamber 10 is provided on the upper part of the upper bearing 6 in the bearing frame 2 The lower part of the lower bearing 5 in the bearing frame 2 is provided with an oil pool 11, the side wall of the bearing frame 2 is provided with an oil guide groove 12 in the axial direction, the center of the lower bearing cover 3 is provided with an oil pressure chamber 13, and the end surface of one side A pressure oil outlet 14 is arranged in the axial direction, and the pressure oil sleeve 7 is fixed on the pump shaft 1 in the oil pool 11 through fastening screws. The oil blade 8 is arranged in the oil pressure chamber 13, and the oil pool 11, the oil pressure chamber 13, the oil pressure outlet 14, the oil guide channel 12, the upper oil chamber 10 and the oil return cooling chamber 9 form a circulating lubricating and cooling oil circuit, When the pump shaft 1 is running, the oil pressure sleeve 7 at the lower end of the pump shaft 1 rotates under the drive of the pump shaft 1, driving the oil pressure vane 8 to rotate, the oil pressure vane 8 does work on the lubricating oil, and the oil pressure drives the liquid along with the pressure oil chamber 13. The pressure oil outlet 14 enters the oil guide groove 12 and continues to flow upward along the oil guide groove 12. When the liquid reaches the upper oil chamber 10 at the top, due to the sealing effect of the upper bearing cover 4, the liquid will not continue to flow. At this time, the liquid reaches the highest point and flows downward under the action of gravity. When the liquid passes through the oil guide groove 12, the oil temperature in the liquid absorbs and dissipates part of the heat through the bearing frame 2. Therefore, the liquid lubrication after cooling After the upper bearing 6, it flows through the oil return cooling chamber 9, and dissipates part of the heat through the oil return cooling chamber 9, so that the liquid lubricates the lower bearing 5 at a lower oil temperature, and then flows down to the oil pool 11 after passing through the lower bearing 5 , and carry out reciprocating cycle lubrication and cooling. During this cycle, the rotation of the pump shaft 1 in the upper oil chamber 10 can make the lubricating oil in contact with a certain peripheral speed. Under the double action of the shower, the effect of contacting the bearing balls is achieved, which significantly reduces the load on the pump shaft, and achieves the effects of reliable performance, good lubrication effect, good cooling effect, and low equipment cost.
本发明可在所述上轴承盖4上端的泵轴上设有冷却风扇15，以利于通过冷却风扇15、上轴承盖4、轴承架2进行冷却，进而冷却上油腔10和冷却腔9，达到显著提高轴承冷却的作用，使其以更低的温度对轴承进行润滑，且为了对旋转部件进行保护，在冷却风扇15外设置风扇罩16，风扇罩16与轴承架2固定连接。In the present invention, a cooling fan 15 can be provided on the pump shaft at the upper end of the upper bearing cover 4, so as to facilitate cooling by the cooling fan 15, the upper bearing cover 4, and the bearing frame 2, thereby cooling the upper oil chamber 10 and the cooling chamber 9, Remarkably improve the cooling effect of the bearing, so that the bearing can be lubricated at a lower temperature, and in order to protect the rotating parts, a fan cover 16 is arranged outside the cooling fan 15, and the fan cover 16 is fixedly connected with the bearing frame 2.
本发明可在所述下轴承盖3下端设有隔离套17，所述隔离套17经迷宫式密封与下轴承盖3密封连接，以达到既能防止润滑油泄漏，又能起到对压油套保护的作用。In the present invention, an isolation sleeve 17 can be provided at the lower end of the lower bearing cover 3, and the isolation sleeve 17 is sealed and connected with the lower bearing cover 3 through a labyrinth seal, so as to prevent lubricating oil from leaking and to prevent oil leakage. The role of cover protection.
本发明所述上轴承盖4经机械油封18与泵轴1密封连接，由于运行过程中的冷却风扇15转速较高，会产生吸附力，会使上油腔10内的润滑油在吸附力的作用之下顺着轴间缝隙向外泄露，因此采用密封性较好的机械油封，以达到防尘、防水和防油泄漏的作用。The upper bearing cover 4 of the present invention is sealed and connected with the pump shaft 1 through the mechanical oil seal 18. Since the cooling fan 15 rotates at a higher speed during operation, it will generate an adsorption force, which will cause the lubricating oil in the oil chamber 10 to increase in the adsorption force. Under the action, it leaks outward along the gap between the shafts, so a mechanical oil seal with good sealing performance is used to achieve the functions of dustproof, waterproof and oil leakage prevention.
本发明还可在所述油池11一侧设有恒位油杯19，所述恒位油杯19经油管与油池相连通，以利于通过恒位油杯自动补充润滑油，保证油池的正常液位，且在添加润滑油时，可以随时通过油杯液位的高低判断轴承架内部的油位，加油时方便操作。The present invention can also be provided with a constant level oil cup 19 on one side of the oil pool 11, and the constant level oil cup 19 is connected with the oil pool through the oil pipe, so as to be beneficial to automatically replenish lubricating oil through the constant level oil cup, and ensure the oil pool is stable. Normal liquid level, and when adding lubricating oil, the oil level inside the bearing frame can be judged at any time by the level of the oil cup liquid level, which is convenient for operation when refueling.
本发明在泵轴1运行时，泵轴1下端的压油套7在泵轴1的带动下旋转，带动压油叶片8旋转，压油叶片8对润滑油做功，油压驱动液体随着压油腔13、压油出口14进入导油通槽12内，并沿导油通槽12继续向上流动，由于液体在经过导油通槽12时，使液体中的油温通过轴承架2吸收散发一部分热量，当液体到达顶部的上油腔10时，由于上轴承盖4与机械密封18的密封作用，使液体到达顶部的上油腔10室，由于上轴承盖4与机械密封18的密封作用，使液体不会继续向上，此时液体到达最高点并在重力作用下向下流动，经过冷却风扇15冷却的液体润滑油会以较低的温度润滑上轴承6，而流经上轴承6的润滑油在经过中部的并通过回油冷却腔9散发一部分热量，进而使液体以较低的油温润滑下轴承5，通过下轴承5继续下流至油池11，并以此行程再次进行往复循环润滑和冷却，在这个循环过程中，泵轴1在上油腔、回油冷却腔内的旋转可以使其接触到的润滑油具有一定的圆周速度，润滑油在重力加速度和圆周速度的双重作用下达到淋浴式接触轴承滚珠的效果，显著降低了泵轴的负载，达到性能可靠、润滑效果好、冷却效果好、设备成本低的作用。In the present invention, when the pump shaft 1 is running, the oil pressure sleeve 7 at the lower end of the pump shaft 1 rotates under the drive of the pump shaft 1, driving the oil pressure vane 8 to rotate, the oil pressure vane 8 does work on the lubricating oil, and the oil pressure drives the liquid with the pressure. The oil chamber 13 and the pressure oil outlet 14 enter the oil guide groove 12 and continue to flow upward along the oil guide groove 12. When the liquid passes through the oil guide groove 12, the oil temperature in the liquid is absorbed and dissipated by the bearing frame 2 Part of the heat, when the liquid reaches the top oil chamber 10, due to the sealing effect of the upper bearing cap 4 and the mechanical seal 18, the liquid reaches the top oil chamber 10, due to the sealing effect of the upper bearing cap 4 and the mechanical seal 18 , so that the liquid will not continue upward, at this time the liquid reaches the highest point and flows downward under the action of gravity, the liquid lubricating oil cooled by the cooling fan 15 will lubricate the upper bearing 6 at a lower temperature, and the oil flowing through the upper bearing 6 The lubricating oil passes through the middle part and dissipates part of the heat through the oil return cooling chamber 9, so that the liquid lubricates the lower bearing 5 at a lower oil temperature, and continues to flow down to the oil pool 11 through the lower bearing 5, and repeats the reciprocating cycle in this stroke Lubrication and cooling. During this cycle, the rotation of the pump shaft 1 in the upper oil chamber and the oil return cooling chamber can make the lubricating oil in contact with a certain peripheral speed. It achieves the effect of shower-type contact bearing balls, significantly reduces the load on the pump shaft, achieves reliable performance, good lubrication effect, good cooling effect, and low equipment cost.
本发明由于采用上述结构，具有结构新颖、结构紧凑、性能可靠、润滑效果好、冷却效果好、设备成本低、维护方便等优点。Due to the adoption of the above structure, the present invention has the advantages of novel structure, compact structure, reliable performance, good lubricating effect, good cooling effect, low equipment cost, convenient maintenance and the like.
Claims (5)
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| CN201610742918.2A CN106194816A (en) | 2016-08-29 | 2016-08-29 | Vertical single-stage centrifugal pump thin oil lubricating device |
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| CN106337926A (en) * | 2016-11-10 | 2017-01-18 | 中国船舶重工集团公司第七0三研究所 | Lubricating Mechanism for Vertical Worm Gear and Worm Turning Machine |
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| CN107269571A (en) * | 2017-08-04 | 2017-10-20 | 重庆水泵厂有限责任公司 | A kind of bearing in pump case lubricating-oil self-circulating system |
| CN108691812A (en) * | 2017-04-05 | 2018-10-23 | 胜达因有限责任公司 | Self contained bearing housing cooling system |
| CN109611373A (en) * | 2018-12-18 | 2019-04-12 | 沈阳格瑞德泵业有限公司 | A kind of vertical pump thin oil self-lubricating bearing body |
| CN111022754A (en) * | 2019-12-25 | 2020-04-17 | 中航工业南京伺服控制系统有限公司 | High-pressure-resistant oil return cooling upper cover structure of electro-hydraulic servo valve |
| CN111120389A (en) * | 2019-12-30 | 2020-05-08 | 西安航天泵业有限公司 | Self-circulation thin oil lubricating bearing body of vertical pump |
| CN112066234A (en) * | 2020-08-31 | 2020-12-11 | 兰州兰泵有限公司 | A vertical pump bearing lubrication and cooling device |
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| CN112066234B (en) * | 2020-08-31 | 2025-05-30 | 兰州兰泵有限公司 | A vertical pump bearing lubrication and cooling device |
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