CN103161735B - Wet rotor pump with pre-chamber - Google Patents
Wet rotor pump with pre-chamber Download PDFInfo
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- CN103161735B CN103161735B CN201210544532.2A CN201210544532A CN103161735B CN 103161735 B CN103161735 B CN 103161735B CN 201210544532 A CN201210544532 A CN 201210544532A CN 103161735 B CN103161735 B CN 103161735B
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- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims 1
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- 239000008187 granular material Substances 0.000 claims 1
- 238000000338 in vitro Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 abstract description 35
- 210000004907 gland Anatomy 0.000 abstract description 7
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 21
- 239000002245 particle Substances 0.000 description 21
- 238000012546 transfer Methods 0.000 description 10
- 239000012528 membrane Substances 0.000 description 7
- 210000002159 anterior chamber Anatomy 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
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- 239000010951 brass Substances 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0613—Special connection between the rotor compartments
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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
- F04D29/5806—Cooling the drive system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/60—Shafts
- F05D2240/61—Hollow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明涉及一种湿转子泵,该湿转子泵带有一个定子和一个被密封管隔开的转子。该转子包括一个转子轴和一个转子组合,转子被支承在通过密封管所形成的转子室里,并且可旋转。其中,转子轴在一个轴向端部带有一个促进液体流动的叶轮,此叶轮设置在泵腔室内,密封管在叶轮端部具有一个大致径向向外延伸的凸缘,在密封管与转子轴之间设置了一个带有轴承的轴承座,为了支承转子轴,此轴承座是被密封管支撑着。在叶轮和凸缘之间有一前腔室,此前腔室在朝叶轮方向是被一隔离体限制的,其中,前腔室是通过通道与转子室连通的。
The invention relates to a wet rotor pump with a stator and a rotor separated by a gland. The rotor includes a rotor shaft and a rotor assembly, and the rotor is rotatably supported in a rotor chamber formed by the seal tube. Wherein, the rotor shaft has an impeller promoting liquid flow at one axial end, and the impeller is arranged in the pump chamber, and the sealing tube has a flange extending generally radially outward at the end of the impeller, between the sealing tube and the rotor A bearing seat with bearings is arranged between the shafts, and in order to support the rotor shaft, the bearing seat is supported by a sealing tube. Between the impeller and the flange there is a prechamber, which is bounded in the direction of the impeller by a spacer, wherein the prechamber communicates with the rotor chamber via a channel.
Description
技术领域technical field
本发明涉及一种湿转子泵,该湿转子泵带有一个定子和一个被密封管隔开的转子。该湿转子泵包括一个转子轴和一个转子组合,转子被支承在通过密封管所形成的转子室里,并且可旋转。其中,转子轴在一个轴向端部带有一个促进液体流动的叶轮,此叶轮设置在泵腔室内,密封管在叶轮端部具有一个大致径向向外延伸的凸缘,在密封管与转子轴之间设置了一个带有轴承的轴承座,为了支承转子轴,此轴承座被密封管支撑着。The invention relates to a wet rotor pump with a stator and a rotor separated by a gland. The wet rotor pump includes a rotor shaft and a rotor assembly, and the rotor is rotatably supported in a rotor chamber formed by a sealed tube. Wherein, the rotor shaft has an impeller for promoting liquid flow at one axial end, and the impeller is arranged in the pump chamber, and the sealing tube has a flange extending generally radially outward at the end of the impeller, between the sealing tube and the rotor A bearing housing with bearings is arranged between the shafts, and in order to support the rotor shaft, the bearing housing is supported by the sealing tube.
背景技术Background technique
在此湿转子泵里,转子在液体里旋转,一般来说,此液体相当于被输送流体,一方面由此形成转子室的液体和被输送流体同时产生热量交换,以达到冷却转子的效果。另一方面转子室里的液体润滑轴承,形成滑动轴承。在一般情况下,水在转子室里被输送和使用。In this wet rotor pump, the rotor rotates in the liquid. Generally speaking, the liquid is equivalent to the delivered fluid. On the one hand, the liquid forming the rotor chamber and the delivered fluid simultaneously generate heat exchange to achieve the effect of cooling the rotor. On the other hand the fluid in the rotor chamber lubricates the bearing, forming a sliding bearing. In general, water is conveyed and used in the rotor chamber.
对于严重被颗粒污染的液体,比如:磁性铁颗粒,磁性生锈颗粒,润滑剂物质,添加剂物质,这些颗粒在转子室里停留,并会引起磨损甚至阻塞转子和轴承。因为这个原因,转子室基本会与泵腔室分离,并会与被输送流体分离。这将导致转子空间和泵腔没有液体交换,于是出现转子室的低冷却。所以,有一个通过转子室的液体循环发生是有利的。For liquids that are heavily contaminated with particles, such as: magnetic iron particles, magnetic rust particles, lubricant substances, additive substances, these particles stay in the rotor chamber and cause wear and even blockage of the rotor and bearings. For this reason, the rotor chamber will be substantially separated from the pump chamber and will be separated from the fluid being conveyed. This will result in no liquid exchange between the rotor space and the pump chamber, so that a low cooling of the rotor chamber occurs. Therefore, it is advantageous to have a circulation of liquid through the rotor chamber take place.
一般来说,转子室是湿转子泵最热的地方,因为在定子里产生的余热大部分通过密封管传到转子室。如果在转子室里采用塑料部件,比如用塑料制成的轴承和轴承屏蔽,那么在发动机里产生的热量由于塑料的绝缘性能,不能充分地递给泵壳体里流动的液体。假如转子室装满常规的用水,那么在60℃度温度以上会有更多的石灰沉淀。石灰沉淀的多或少是根据水的硬度决定的。由于这个原因,尽可能保持转子室和流体之间少量的液体交换,是值得追求的。Generally speaking, the rotor chamber is the hottest place in the wet rotor pump, because most of the waste heat generated in the stator is transferred to the rotor chamber through the sealed tube. If plastic components are used in the rotor chamber, such as bearings and bearing screens made of plastic, the heat generated in the motor cannot be sufficiently transferred to the fluid flowing in the pump housing due to the insulating properties of the plastic. If the rotor chamber is filled with regular water, there will be more lime precipitation at temperatures above 60°C. The amount of lime that settles depends on the hardness of the water. For this reason, it is desirable to keep as little liquid exchange as possible between the rotor chamber and the fluid.
发明内容Contents of the invention
因此本发明的任务是提供一种湿转子泵,此湿转子泵一方面在最大限度减少流体交换的同时,能提供足够有效的散热,使转子室里的热量足够有效地传递到流体里,另一方面避免固体颗粒的沉淀和石灰沉淀的风险,或将此风险减少到最底限度。Therefore, the task of the present invention is to provide a wet rotor pump which, on the one hand, minimizes the exchange of fluids, and at the same time, can provide sufficient and effective heat dissipation, so that the heat in the rotor chamber can be transferred to the fluid efficiently enough, and on the other hand On the one hand, it avoids the precipitation of solid particles and the risk of lime precipitation, or reduces this risk to a minimum.
此上所述的任务,通过湿转子泵按本发明所述特征得以解决,详细说明如下。The above-mentioned object is achieved by a wet rotor pump according to the features of the invention, as explained in more detail below.
湿转子泵,带有一个定子和一个被密封管与该定子隔开的转子,该湿转子泵包括一个转子轴和一个转子组合,转子被支承在通过密封管所形成的转子室里,并且可旋转,其中,转子轴在一个轴向端部带有一个促进液体流动的叶轮,此叶轮设置在泵腔室内,密封管在叶轮侧端部具有一个大致径向向外延伸的凸缘,在密封管与转子轴之间设置了一个带有轴承的轴承座,为了支承转子轴,此轴承座被密封管支撑着,其特征在于,在叶轮和凸缘之间有一前腔室,此前腔室在朝叶轮方向是被一隔离体限制的,并且在朝向定子方向是被凸缘限制的,其中,前腔室是通过通道与转子室连通的。A wet rotor pump having a stator and a rotor separated from the stator by a gland, the wet rotor pump comprising a rotor shaft and a rotor assembly, the rotor being supported in a rotor chamber formed by the gland and capable of Rotating, wherein the rotor shaft has an impeller at one axial end to facilitate the flow of liquid, the impeller is arranged in the pump chamber, the sealing tube has a flange extending approximately radially outwards at the end of the impeller side, in the sealing A bearing seat with a bearing is set between the tube and the rotor shaft. In order to support the rotor shaft, the bearing seat is supported by the sealing tube. It is characterized in that there is a front chamber between the impeller and the flange. It is bounded towards the impeller by a spacer and towards the stator by a flange, wherein the front chamber communicates with the rotor chamber through a channel.
本发明所述的是一种湿转子泵,该湿转子泵带有一个定子和一个被密封管隔开的转子,该转子包括一个转子轴和一个转子组合,转子被支撑在通过密封管所形成的转子室里,并且可旋转。其中,转子轴在一个轴向端部带有一个促进液体流动的叶轮,此叶轮设置在泵腔室内,密封管在叶轮侧端部具有一个大致径向向外延伸的凸缘,在密封管和转子轴之间设置了一个带有轴承的轴承座,为了支承转子轴,此轴承座是被密封管支撑着,在叶轮与凸缘之间有一个前腔室,此前腔室在朝向叶轮方向受到隔离体限制,在朝向定子方向朝受到凸缘限制,其中,前腔室是通过通道与转子室互通地连接在一起。The invention relates to a wet rotor pump. The wet rotor pump has a stator and a rotor separated by a sealing tube. The rotor includes a rotor shaft and a rotor combination. The rotor is supported on a In the rotor chamber, and can rotate. Wherein, the rotor shaft has an impeller for promoting liquid flow at one axial end, and the impeller is arranged in the pump chamber, and the sealing tube has a flange extending approximately radially outward at the end of the impeller side, between the sealing tube and A bearing seat with bearings is set between the rotor shafts. In order to support the rotor shaft, the bearing seat is supported by a sealing tube. There is a front chamber between the impeller and the flange. The spacer is bounded by a flange in the direction towards the stator, wherein the front chamber is communicated with the rotor chamber through a channel.
本发明的核心构思是,在转子室和泵腔室之间提供一个相对大的前腔室,也就是说,在叶轮之后和凸缘之间,使得泵腔室的强湍流不能进入前腔室。对泵腔室来说,前腔室里的液体流动在很大程度上颇为平静。这是通过隔离体达到的。The central idea of the invention is to provide a relatively large anterior chamber between the rotor chamber and the pump chamber, that is, after the impeller and between the flanges, so that the highly turbulent flow of the pump chamber cannot enter the anterior chamber . As with the pump chamber, the fluid flow in the anterior chamber is largely calm. This is achieved by isolators.
隔离体把前腔室与泵腔室从空间上分开,以便转子室与由于叶轮引起的涡流的分离。该隔离体还提供了相对大的表面积,可以作为一个热量交换器。此外,这前腔室/镇静室与转子室被轴承座及在轴承座里轴承分隔,其中,在前腔室和转子室之间,通过通道有足够的液体交换发生,可确保必要的热量交换。The separator spatially separates the front chamber from the pump chamber so that the rotor chamber is separated from the vortex caused by the impeller. The separator also provides a relatively large surface area and can act as a heat exchanger. Furthermore, the front chamber/ballast chamber is separated from the rotor chamber by the bearing housing and the bearings in the bearing housing, wherein, between the front chamber and the rotor chamber, sufficient fluid exchange takes place through channels to ensure the necessary heat exchange .
通道可以位于在轴承座里,并/或在轴承座和密封管之间,并/或在轴承和轴承座之间。通过隔离体,其内壁被循环流体淹没,热量随后被传递到在泵腔室里的输送液体。因此隔离体此处作为热量交换器。The channel may be located in the bearing housing, and/or between the bearing housing and the gland, and/or between the bearing and the bearing housing. Through the separator, whose inner walls are flooded by the circulating fluid, the heat is then transferred to the delivery liquid in the pump chamber. The separator thus acts here as a heat exchanger.
前腔室的另一个优点是,在转子室里的颗粒或可能产生的颗粒,比如说石灰沉淀或磨损,在前腔室里堆积。如果泵被关闭,颗粒掉在底部,并堆积在前腔室的下部,它们就不能进入到转子室或者不能进入滑动轴承的轴承间隙,并会在那里引起磨损或损坏。Another advantage of the forechamber is that particles in the rotor chamber or possibly generated particles, such as lime deposits or wear, accumulate in the forechamber. If the pump is switched off, the particles fall to the bottom and accumulate in the lower part of the front chamber, where they cannot enter the rotor chamber or the bearing gaps of the slide bearings, where they can cause wear or damage.
凸缘可以模制在密封管上形成一体,或作为单独的部件插在密封管上或插入密封管里。The flange may be integrally molded onto the gland or inserted as a separate part onto or into the gland.
至少湿转子泵在工作状态下,前腔室最好在朝向泵腔室方向是关闭的。泵在非工作状态下,这种情况不一定要发生。这意味着,湿转子泵在非工作状态下,也就是在不加压的状态下,前腔室在朝向泵腔室方向是关闭的或是在打开的。实施例后面会对此进行说明。以上所述的情况其中之一,前腔室在泵工作和非工作状态下都是关闭的,其中,湿转子泵里的前腔室可以由一个具形状稳定性,并包括隔离体的部件构成。这完全可防止流体里的颗粒渗透到转子室。At least in the working state of the wet rotor pump, the front chamber is preferably closed towards the pump chamber. This does not have to happen when the pump is not in operation. This means that in the non-operating state of the wet rotor pump, ie in the depressurized state, the front chamber is closed or open in the direction of the pump chamber. This will be described later in the embodiments. In one of the cases mentioned above, the front chamber is closed in both operating and non-operating conditions of the pump, wherein the front chamber in wet rotor pumps can be formed by a shape-stable part including an isolator . This completely prevents particles in the fluid from penetrating the rotor chamber.
在一个有利的实施例里,隔离体可以是一个过滤器。湿转子泵在工作状态下,前腔室仍然是与泵腔室分开的,然而液体可以流过隔离体。以这种方式,前腔室和泵腔室可以产生液体交换,这样进一步提高散热,同时又能确保流体的大颗粒不进入泵腔室。In an advantageous embodiment, the spacer can be a filter. When the wet rotor pump is in operation, the front chamber is still separated from the pump chamber, but the liquid can flow through the separator. In this way, fluid exchange between the front chamber and the pump chamber can occur, which further improves heat dissipation while ensuring that large particles of fluid do not enter the pump chamber.
隔离器本身可以作为一个过滤器,并/或含有一个或多个过滤器部件。沿着隔离器的同心圆,这些部件可以是对称的。因此,隔离件不依赖于特定的安装位置。过滤部件尽量设置在径向向外的位置,能够达到前腔室里,并/或转子室里更好的通风效果。The isolator can itself act as a filter and/or contain one or more filter components. These components may be symmetrical along the concentric circles of the isolator. Therefore, the spacer is not dependent on a specific installation location. The filter element is arranged radially outward as much as possible, so as to achieve a better ventilation effect in the front chamber and/or in the rotor chamber.
过滤器部件可以由海绵状的过滤体,网状的组织,是由金属或塑料而制成,其次过滤器也可以通过在过滤器自身部件上开相当于被过滤颗粒大小的小开口而制成,过滤器部件是装入在隔离体里(固体),固定在隔离体上(网状的组织),或是在里隔离体里构成的(开口)。如果小开口构成在隔离体里,这隔离体本身就是过滤器。这些开口可以是以穿孔的方式分部在整个或部分隔离体表面。或者隔离体具有网状结构,那它自身可以就是一个过滤器。The filter part can be made of sponge-like filter body and mesh tissue, which is made of metal or plastic. Secondly, the filter can also be made by opening a small opening equivalent to the size of the filtered particle on the filter itself. , The filter part is packed in the isolator (solid), fixed on the isolator (reticular tissue), or formed in the isolator (opening). If small openings are formed in the separator, the separator itself is the filter. These openings can be distributed in the whole or part of the surface of the separator in the form of perforations. Or the isolator has a mesh structure, then it can be a filter itself.
优选的是,前腔室在沿径向向外方向受一个筒状行外壁的限制,此外壁是在一轴端部与凸缘连在一起,并在它另一轴端部支撑着隔离体,或贴靠着隔离体,或与隔离体合并。隔离体从而可以与外壁形成一体,使外壁在另一端部与隔离体合并,或者隔离体是与外壁无关的单独部件,隔离体只仅仅是躺在外壁上或贴靠着外壁的。Preferably, the anterior chamber is bounded in a radially outward direction by a cylindrical row of outer walls joined at one axial end to the flange and supporting the spacer at its other axial end , or close to the isolation body, or merge with the isolation body. The spacer can thus be integral with the outer wall, so that the outer wall merges with the spacer at the other end, or it can be a separate part independent of the outer wall, the spacer merely lying on or against the outer wall.
以上所述的两种情况,隔离体是坚固的,也就是说形状稳定和不柔韧的。另外,隔离体也可以有一定的弹性和柔韧性。这些特征主要取决于所使用的材料和隔离体的厚度。In both cases described above, the separator is solid, that is to say dimensionally stable and inflexible. In addition, the separator may also have certain elasticity and flexibility. These characteristics mainly depend on the materials used and the thickness of the separator.
所以隔离体可以是由一种材料制成,此材料既有一定的形状稳定性,又有柔韧性。这意味着,隔离体在压力下是可以动的,特别是可旋转的。一种具有一定厚度的弹性塑料或薄金属片特别合适制成隔离体。在本实施例中,隔离体与外壁形成一体或贴靠在外壁上。So the separator can be made of a material that has both certain shape stability and flexibility. This means that the separating body is movable, in particular rotatable, under pressure. An elastic plastic or thin metal sheet with a certain thickness is particularly suitable for the spacer. In this embodiment, the spacer is integrally formed with the outer wall or abuts against the outer wall.
或者隔离体完全可以是形状不稳定的,至少在它径向外侧的区域,优选的是在隔离体整个区域。这种隔离体以下方式可获得,例如,具有上述的网状结构或是由一个隔膜而形成的。在这种情况下,隔离体同样是具有弹性的,但它必须被额外支撑着。由于缺乏形状稳定性,隔离体可以连接固定在外壁的另一轴端部,特别是被支夹在那里,以便这外壁的端部支撑着隔离体。Alternatively, the separating body can be dimensionally unstable at least in its radially outer region, preferably over the entire region of the separating body. Such a separator is obtainable, for example, by having the above-mentioned network structure or by being formed by a membrane. In this case, the spacer is also elastic, but it must be supported additionally. Due to the lack of shape stability, the insulating body can be connected to the other axial end of the outer wall, in particular clamped there, so that this end of the outer wall supports the insulating body.
与此相反,针对一个形状稳定,柔韧性的隔离体,此隔离体靠在外壁的另一轴端部,因为尺寸稳定性而不需要被固定或支紧。特别是泵在工作状态下,隔离体贴靠在外壁的端部或躺在外壁的端部,后面将要说明。In contrast, for a dimensionally stable, flexible spacer, the spacer rests against the other axial end of the outer wall and does not need to be fixed or braced because of its dimensional stability. Especially when the pump is in working condition, the isolation body is close to the end of the outer wall or lies on the end of the outer wall, which will be explained later.
为了要在朝向定子的方向得到一个基本上关闭的前腔室,外壁可以密封地贴在凸缘上。例如可以直接或间接地通过使用一个密封唇,密封盘或密封环而实现,密封唇,密封盘或密封环在外壁上构成并与外壁形成一体,或作为一个独立部件位于外壁和凸缘之间。In order to obtain a substantially closed front chamber in the direction of the stator, the outer wall can bear sealingly against the flange. This can be achieved, for example, directly or indirectly by using a sealing lip, sealing disc or sealing ring, which is formed on the outer wall and is integral with the outer wall, or as a separate part between the outer wall and the flange .
优选的是,前腔室可以在朝转子轴方向至少部分是受一个内圈的限制,此内圈是与轴承座连接的,并支撑隔离体或者与隔离体合并为一体的。特别是内圈,内圈可以在其一个轴向端部与轴承座连接在一起,在另一轴端部支撑隔离体或是与隔离体合并为一体。Preferably, the front chamber may be at least partially bounded in the direction of the rotor shaft by an inner ring which is connected to the bearing housing and supports or is integrated with the spacer. Especially the inner ring, which can be connected to the bearing housing at one axial end thereof, and support the isolator at the other axial end or be integrated with the isolator.
此外,前腔室在朝转子轴的方向可以是密封的。这可以直接或间接地通过使用一个密封唇,密封盘或密封环而实现,优选的是,通过使用一个动态密封或一个滑环密封来实现。Furthermore, the front chamber can be sealed in the direction of the rotor shaft. This can be achieved directly or indirectly by using a sealing lip, sealing disc or sealing ring, preferably by using a dynamic seal or a slide ring seal.
隔离体优先选用热传导性材料,特别是由金属制成。比如,隔离板可以由金属片,钢或黄铜来制成。也可以用热传导性塑料制成。这样就能确保有效的热传递,热量能有效地通过隔离体传递到泵腔室里的液体。The spacer is preferably made of a thermally conductive material, especially metal. For example, insulation panels can be made of sheet metal, steel or brass. Also available in thermally conductive plastic. This ensures efficient heat transfer through the spacer to the fluid in the pump chamber.
前面已提到,隔离体至少部分可用一个有柔韧性的隔膜制成。此隔膜具有的优点:它可以承受压力脉冲,例如,在开启和关闭泵时所出现的压力脉冲。此外,它还可以提供转子室和泵腔室之间的压力均衡。该隔膜可以由弹性的塑料材料或金属制成,例如,钢膜片。钢膜片比塑料膜片具有更高的传热系数,因此能达到更好的传热效果。As mentioned above, the spacer can be formed at least partly from a flexible membrane. This diaphragm has the advantage: It can withstand pressure pulses, for example, which occur when switching the pump on and off. In addition, it provides pressure equalization between the rotor chamber and the pump chamber. The diaphragm can be made of a resilient plastic material or metal, eg a steel diaphragm. The steel diaphragm has a higher heat transfer coefficient than the plastic diaphragm, so it can achieve better heat transfer effect.
在用隔膜制成隔离体的实施例中,隔离体可以被固定在内圈的内侧,例如,它被贴在,焊接在或被牢牢夹紧在内圈的轴环上。隔膜也可以牢固地固定在外壁上。In the embodiment in which the separator is made of a diaphragm, the separator can be fixed on the inside of the inner ring, for example, it is taped, welded or firmly clamped to the collar of the inner ring. The diaphragm can also be fixed firmly to the outer wall.
然而,隔膜如果是松散地躺在朝向叶轮的外壁轴端的正面上,是有利的。为了增加接触面,外壁可以有一个径向向内指向的凸面,可让隔膜躺在上面。由于泵腔室的压力大于转子室的压力,隔膜被压在外壁的正面。所以隔膜不需要被额外的,全方位的固定。隔膜被固定在外壁的一个或几个位置,以便隔膜保持其位置,这对于泵的安装是有特别帮助的。泵在工作状态下,隔膜是不透液体的,但是不气密的贴在外壁的正面。这可确保,当泵开始运行,转子室被充满液体时,气体从转子室顶部溢出。此外,泵在停止运行时,转子室里的液体也可以通过隔膜和外壁正面之间的间隙溢出。However, it is advantageous if the diaphragm lies loosely on the front side towards the axial end of the outer wall of the impeller. To increase the contact surface, the outer wall may have a radially inwardly directed convex surface on which the diaphragm rests. Since the pressure in the pump chamber is greater than that in the rotor chamber, the diaphragm is pressed against the front of the outer wall. So the diaphragm does not need to be additionally fixed in all directions. The diaphragm is fixed in one or several places on the outer wall so that the diaphragm maintains its position, which is especially helpful for pump installations. When the pump is in operation, the diaphragm is liquid-tight, but not air-tight, attached to the front of the outer wall. This ensures that, when the pump is started and the rotor chamber is filled with liquid, gas escapes from the top of the rotor chamber. In addition, when the pump is stopped, the liquid in the rotor chamber can also escape through the gap between the diaphragm and the front face of the outer wall.
优选的是,隔离体靠近叶轮,其中,叶轮和隔离体之间的距离选择,应取决于叶轮的直径,特别是,这距离可以是叶轮直径的0.015倍到0.04倍。因为存在在叶轮后面的强湍流,会导致液压损失,促使叶轮和隔离体之间有相对较小的间隙,使得湍流减少,从而提高工作效率。Preferably, the spacer is close to the impeller, wherein the distance between the impeller and the spacer should be chosen depending on the diameter of the impeller, in particular, this distance can be 0.015 to 0.04 times the diameter of the impeller. Because there is a strong turbulent flow behind the impeller, which will cause hydraulic loss, there is a relatively small gap between the impeller and the separator, so that the turbulent flow is reduced, thereby improving work efficiency.
本发明的湿转子泵,轴承座与密封管可以形成一体。在这里,轴承座连同密封管优选选择用塑料制成。上述的特征以外,附加或替代地,轴承座与轴承合成一体,而成为的轴承座组件。在此情况下,轴承座组件优选选择用塑料制成。In the wet rotor pump of the present invention, the bearing seat and the sealing tube can be integrated. Here, the bearing seat together with the sealing tube is preferably made of plastic. In addition to the above features, additionally or alternatively, the bearing seat and the bearing are integrated to form a bearing seat assembly. In this case, the housing assembly is preferably chosen to be made of plastic.
除上述的实施例以外,附加或替代地,隔离体或至少内圈可以与轴承座形成一体。附加或替代地,隔离体可以与内圈形成一体,特别是由塑料制成。这是合适的,当隔离体是形状稳定的壁,例如为了接纳上述的过滤部件。In addition to the above-described embodiments, additionally or alternatively, the spacer or at least the inner ring may be integrally formed with the bearing housing. Additionally or alternatively, the insulating body can be formed in one piece with the inner ring, in particular made of plastic. This is suitable when the separating body is a dimensionally stable wall, for example in order to receive the aforementioned filter element.
在上述的功能之外,附加或替代地,密封管在它背对叶轮的轴向端部具有一底部,用于关转子室,因此密封管成为一个所谓的密封锅。In addition to or alternatively to the above-mentioned functions, the sealing tube has a bottom at its axial end facing away from the impeller for closing the rotor chamber, so that the sealing tube becomes a so-called sealing pot.
上述之一的实施例特征,附加或替代地,为了隔离体的固定,外壁尤其通过径向横杆与同轴内圈连接在一起。如果此隔离体是由隔膜制成的,尤其是形状不稳定的隔膜,这是特别有利的。这隔膜可以躺在横杆上,特别是松散的或只被固定在个别的几个位置,并通过横杆被支持着。In one of the above-mentioned embodiment features, additionally or alternatively, the outer wall is connected to the coaxial inner ring, in particular via radial crossbars, for the purpose of securing the insulating body. This is particularly advantageous if the separator is produced from a membrane, in particular a membrane that is not stable in shape. The diaphragm can lie on the crossbar, especially loosely or be fixed in only a few places, and be supported by the crossbar.
根据本发明另一个有利的方面,除了以上描述的特征,附加或替代地,湿转子泵在不工作的状态下,也就是不加压的状态下,隔离体可以在它径向向外周圆的部分区域与外壁间形成间隙,湿转子泵在工作状态下,隔离体可以被压在外壁上。如果隔离体贴靠在外壁上,那么前腔室会被关闭。如湿转子泵在非工作状态下,隔离体和外壁之间存在距离,那么外壁与隔离体有一间隙,这样一来,根据间隙的位置一方面气体可以从前腔室溢出,并/或另一方面颗粒可以从前腔室逸出,此外,液体在填充泵的过程中可以进入前腔室。According to another advantageous aspect of the present invention, in addition to the features described above, additionally or alternatively, when the wet rotor pump is in a non-operating state, that is, in a non-pressurized state, the isolation body can A gap is formed between some areas and the outer wall, and the separator can be pressed against the outer wall when the wet rotor pump is in working condition. If the spacer rests against the outer wall, the front chamber is closed. If there is a distance between the separator and the outer wall in the non-operating state of the wet rotor pump, then there is a gap between the outer wall and the separator, so that, depending on the position of the gap, gas can escape from the front chamber on the one hand and/or on the other hand Particles can escape from the anterior chamber and, moreover, liquid can enter the anterior chamber during filling of the pump.
湿转子泵在不工作的状态下,也就是说不加压的状态下,优选的是,隔离体在它经向外周圆的部分区域与外壁之间有间隙,根据泵的安装位置,该部分区域位于在泵的下面。泵在非工作状态下,曾在前腔室到处旋转的颗粒降落到底部,而且可以通过隔离体和外壁之间的间隙继续下降到泵腔室,在泵的下次启动时,颗粒从那里被输送出去。When the wet rotor pump is in a non-working state, that is to say, in a non-pressurized state, it is preferable that there is a gap between the spacer and the outer wall in its part of the outer circumference. According to the installation position of the pump, this part The area is located under the pump. When the pump is not working, the particles that have been rotating around in the front chamber fall to the bottom, and can continue to descend into the pump chamber through the gap between the separator and the outer wall. When the pump is started next time, the particles are removed from there. Ship out.
为了实现颗粒降入泵腔室室的内部,外壁的内侧至少在朝叶轮方向的区域向下倾斜。然后颗粒会延着斜坡向下滑动掉入泵腔室。In order to enable the particles to fall into the interior of the pump chamber, the inner side of the outer wall slopes downward at least in the region facing the impeller. The particles then slide down the ramp and fall into the pump chamber.
为了实现以上所述的,隔离体可以是一个有柔韧性的环形盘,尤其可用由形状稳定的,弹性塑料或一个薄,可以动的金属片制成。金属片或形状稳定的塑料跟一个弹性隔膜比,具有的优点是,它在厚度相同的情况下更具有形状稳定性并且不需要被固定在外壁上。此外,这样的隔离体能够承受更大的力,并更好地把前腔室的热量传递到泵腔室中的液体里。外壁和内圈之间的横向杆可以被省略,以使前腔室的液体为了散热能更好涌过隔离体。To achieve the above, the spacer can be a flexible annular disk, especially made of dimensionally stable, elastic plastic or a thin, movable metal sheet. A metal sheet or a dimensionally stable plastic has the advantage over an elastic diaphragm that it is more dimensionally stable for the same thickness and does not need to be fastened to the outer wall. In addition, such an insulator is able to withstand greater forces and better transfer heat from the front chamber to the fluid in the pump chamber. The transverse bar between the outer wall and the inner ring can be omitted to allow the liquid in the front chamber to better flush through the spacer for heat dissipation.
特别有利的是,如果湿转子泵在不工作的状态下,也就是说不加压的状态下,隔离体不仅在它经向外周圆部分区域,而且在它经向外周圆全部区域与外壁之间也有间隙,并湿转子泵在工作状态下,隔离体被压到外壁上。因此,底部的颗粒和上面的气体能够从前腔室逸出,而不需要取决于相对于湿转子泵安装位置的隔离体安装方向。It is particularly advantageous that if the wet rotor pump is in a non-operating state, that is to say in a non-pressurized state, the separator is not only in its part of the meridian outer circumference, but also between its meridian outer circumference and the outer wall. There is also a gap between them, and when the wet rotor pump is in working condition, the isolator is pressed to the outer wall. Thus, particles at the bottom and gas above can escape from the front chamber without depending on the orientation of the installation of the separator relative to the installation location of the wet rotor pump.
除了上述特征以外,附加或替代地,外壁的内侧可以至少在前腔室的下部向叶轮倾斜。这是指,外壁的内侧,与在叶轮和泵轴的旋转轴之间在朝叶轮方向的距离扩大了。这也是指在前腔室下部,相对于湿转子泵的安装位置,倾斜度是向下的,也就是沿着重心力方向的。在进一步改进实施例中,以上所述的倾斜度可以充分继续,从而使前腔室是旋转对称的。也就是说,前腔室在朝泵腔室的方向是打开的,或是,外壁内侧在朝向定子的方向是圆锥形的。这具有的优点是,为了实现在前腔室底部积累的颗粒子可以向前滑入到泵腔室里,并不取决于相对于泵安装位置的外壁位置。In addition to the above features, additionally or alternatively, the inner side of the outer wall may be inclined towards the impeller at least in the lower part of the front chamber. This means that the distance between the inside of the outer wall and the axis of rotation of the impeller and the pump shaft in the direction of the impeller increases. This also means that in the lower part of the front chamber, relative to the installation position of the wet rotor pump, the inclination is downward, that is, along the direction of the center of gravity. In a further refinement, the above-described inclination can be continued sufficiently so that the front chamber is rotationally symmetrical. That is, the front chamber is open in the direction of the pump chamber, or the inner side of the outer wall is conical in the direction of the stator. This has the advantage that the particles accumulated at the bottom of the front chamber can slide forward into the pump chamber independently of the position of the outer wall relative to the installation position of the pump in order to achieve this.
为了实现一种前腔室,此前腔室的径向受到限制的外壁以及外壁内侧朝叶轮方向倾斜,那么可以使用具有单壁并具有恒定厚度的外壁,外壁整体在朝定子的方向是圆锥形的。这也就是说,外壁的外侧在朝定子的方向是圆锥形的。或者外壁在轴向截面可以是三角形的,其中,外壁的厚度在朝叶轮方越来越小,同时前腔室的内径变得更大。另一种可能,外壁在每一个实施例可以是双壁的,其中,内侧的第一壁会限制前腔室,它的形状与上述具有单壁并具有恒定厚度的外壁相符,然而,外侧的第二壁是与转子轴成轴平行。内侧的第一壁与外侧的第二壁在朝向叶轮的正面形成锐角并合并为一体。In order to realize a prechamber with a radially limited outer wall and an inner side of the outer wall inclined towards the impeller, it is possible to use an outer wall with a single wall and a constant thickness, the outer wall being conical as a whole in the direction of the stator . This means that the outer side of the outer wall is conical in the direction of the stator. Alternatively the outer wall may be triangular in axial section, wherein the thickness of the outer wall decreases towards the impeller while the inner diameter of the front chamber becomes larger. Alternatively, the outer wall can be double-walled in each embodiment, wherein the inner first wall delimits the front chamber, its shape conforms to the above-mentioned outer wall with a single wall and constant thickness, however, the outer The second wall is axially parallel to the rotor shaft. The inner first wall and the outer second wall form an acute angle on the front facing the impeller and merge into one.
除了以上所说的特征,附加或替代地,为了提高热量传递到前腔室的散热效果,隔离体可以用结构元素来增大表面积。这些结构元素可以是螺纹形的,沟槽形的,小结粒形的,卷边形的,或是凹槽形的。In addition to the above-mentioned features, additionally or alternatively, in order to improve the heat dissipation effect of heat transfer to the front chamber, the spacer may use structural elements to increase the surface area. These structural elements may be threaded, grooved, nodular, crimped, or grooved.
优选的是,这些结构元素位于朝向前腔室的隔离体反面,如果结构元素位于在朝向前腔室的隔离体正面,会导致液压损失。Preferably, these structural elements are located on the opposite side of the insulation towards the front chamber, if the structural elements were located on the front side of the insulation towards the front chamber, hydraulic losses would result.
结构元素在隔离体的反面会提高热量的吸收。为了更好地有效散热,如结构元件是塑造在正面的,那么结构元素在朝叶轮的方向不要太耸起,这样液压损失不会太大,结构元素可以有多种形式塑造,如:径向的,割线形的,同心圆形的,或螺旋形的。Structural elements on the opposite side of the insulation enhance heat absorption. In order to better dissipate heat effectively, if the structural element is shaped on the front, then the structural element should not be too raised in the direction of the impeller, so that the hydraulic loss will not be too large, and the structural element can be shaped in various forms, such as: radial , secant, concentric, or spiral.
根据本发明湿转子泵另一种优选的的扩展方案,除了上面所述特征外,附加或替代地,轴承座在它朝向叶轮的轴端部有一个朝向外壁延伸的轮缘,此轮缘把前腔室分成一个朝向泵腔室方向的前室和一个背对泵腔室的后室。此轮缘也可以作为一个隔离壁,可有针对性地引导前腔室的液体流动。According to another preferred development of the wet rotor pump according to the invention, in addition to the above-mentioned features, additionally or alternatively, the bearing housing has a rim extending towards the outer wall at its axial end facing the impeller. The front chamber is divided into a front chamber facing the pump chamber and a rear chamber facing away from the pump chamber. This rim also acts as a dividing wall, which guides the liquid flow in the front chamber in a targeted manner.
优选的是,上述的前室与后室是至少通过一开口连通在一起的,以便液体可以从一个室空间流到另一个室空间。轮缘有一个开口,此开口由轮缘和外壁之间的距离而形成。Preferably, the above-mentioned front chamber and the rear chamber are communicated together through at least one opening, so that liquid can flow from one chamber space to the other chamber space. The rim has an opening formed by the distance between the rim and the outer wall.
至少一个开口可以是环形状的,也就是说轮缘在与外壁内侧有一定距离的地方终上。可选地,也可以有多个开口。这些多个开口也可以在轮缘里或者是由轮缘和外壁之间的距离而形成。At least one opening may be ring-shaped, that is to say the rim ends at a distance from the inner side of the outer wall. Optionally, there may be multiple openings. These multiple openings can also be in the rim or be formed by the distance between the rim and the outer wall.
如果有多个开口,轮缘可以与外壁合并成一起,其中,这些开口设置在轮缘轮缘上。The rim can be integrated with the outer wall if there are several openings, wherein the openings are provided on the rim rim of the rim.
上述中的单个开口或多个开口位于径向向外的位置,以便涌流最大程度地经过隔离体。The opening or openings mentioned above are positioned radially outward to maximize the flow through the spacer.
在以上实施例中之一的优选的的扩展方案,前腔室,特别是其前室,有一个朝向转子轴的开放空间。在这个开放空间里,转子轴可以支撑另一个叶轮,此叶轮能促进至少部分径向方向的在前腔室里的液体流动。另一个叶轮可以是一个涡轮或者是一个圆片,轴正面具有沟槽或螺纹,这以便促进液体输送。比如,沟槽或螺纹可以是螺旋型的。叶轮应该较小,便于产生最小的流量。所以,在径向方向上的叶轮长度只需要在1/4和1/3的转子轴半径之间。In a preferred development of one of the above embodiments, the antechamber, in particular its antechamber, has an open space towards the rotor shaft. In this open space, the rotor shaft can support another impeller, which promotes the flow of liquid in the front chamber in at least part of the radial direction. The other impeller may be a turbine or a disc with grooves or threads on the front of the shaft to facilitate liquid transfer. For example, the grooves or threads may be helical. The impeller should be small in order to produce minimum flow. Therefore, the impeller length in the radial direction only needs to be between 1/4 and 1/3 of the radius of the rotor shaft.
优选的是,转子轴是一个带有中心孔的空心轴,通过中心孔液体可流过,此空心轴在背向叶轮的轴端是开放的,并从那里合并到转子室。Preferably, the rotor shaft is a hollow shaft with a central bore through which liquid can flow, which hollow shaft is open at the shaft end facing away from the impeller and merges from there into the rotor chamber.
相对于转子轴的轴向方向,转子轴可以有一个或多个横向孔,通过横向孔,转子轴里的液体可以流入到前腔室。以上所述的一个或多个横向孔起到连接中心孔和前腔室的作用,从而实现液体循环。这些横向孔已经促进了液体流动,所以,以上所提到的另一个叶轮基本上是不需要的。但是,附加或额外使用也是可以的。With respect to the axial direction of the rotor shaft, the rotor shaft can have one or more transverse holes, through which the liquid in the rotor shaft can flow into the front chamber. The one or more transverse holes described above serve to connect the central hole and the front chamber, thereby enabling fluid circulation. These transverse holes already facilitate liquid flow, so that the above-mentioned further impeller is basically unnecessary. However, additional or additional use is also possible.
如果使用一个涡轮作为额外的叶轮,那么其叶片沿着轴向方向可以延伸到钻孔之前,以便转子轴旋转时,叶片额外加速液体流动。同时在横向孔中产生低压,通过这个低压,转子室里的液体被吸入到转子轴里。另外,叶片把在前腔室的液体径向向外输送,其中,液体流经过隔离壁的反面,并且能把其热量传递给隔离板。If a turbine is used as an additional impeller, its blades can be extended in the axial direction ahead of the borehole so that the blades additionally accelerate the liquid flow when the rotor shaft rotates. At the same time, a low pressure is generated in the transverse bore, by means of which the liquid in the rotor chamber is sucked into the rotor shaft. In addition, the vanes convey the liquid in the front chamber radially outwards, wherein the liquid flows past the opposite side of the partition wall and can transfer its heat to the partition plate.
即使另一个叶轮不存在,也会因为在横向孔区域的温度斜度和离心力,因此而产生在转子室和前腔室里的液体循环。Even if the other impeller is not present, there will be a liquid circulation in the rotor chamber and the front chamber due to the temperature gradient and the centrifugal force in the area of the transverse bore.
在外周区域,液体可以在轴向方向从前室流到后室,并从那里通过轴承座和密封管之间的通道,并/或者通过轴承座和轴承之间的通道进入转子室,在转子室里液体被加热,并在转子轴端流入转子轴。因此一个有效的冷却系统得以保持,通过此冷却系统,转子室的热量有效地散到位于前腔室和泵腔室之间的隔离体上,然后,隔离体把热量传递到泵腔室的液体内。In the peripheral area, the liquid can flow in the axial direction from the front chamber to the rear chamber and from there through the passage between the bearing housing and the sealing tube and/or through the passage between the bearing housing and the bearing into the rotor chamber, in the rotor chamber The liquid is heated and flows into the rotor shaft at the rotor shaft end. Thus an effective cooling system is maintained, through which the heat of the rotor chamber is efficiently dissipated to the insulator located between the front chamber and the pump chamber, which then transfers the heat to the liquid in the pump chamber Inside.
本发明的其它优点和特征,将通过以下实施例和附图进一步详细描述。Other advantages and features of the present invention will be further described in detail through the following examples and accompanying drawings.
附图说明Description of drawings
附图1轴向截面的局部视图,按照发明的一种湿转子泵,带有一个大的前腔室和形状稳定的隔离体Accompanying drawing 1 Partial view in axial section of a wet rotor pump according to the invention with a large front chamber and dimensionally stable separator
附图2轴向截面的局部视图,按照发明的另一种湿转子泵,带有一个大的前腔室和用有柔韧性的隔膜而制成的隔离体Accompanying drawing 2 is partial view of axial section, according to another kind of wet rotor pump of the invention, has a large front chamber and isolating body made with flexible diaphragm
附图3轴向截面视图,按照发明的另一种湿转子泵,带有一个被分隔的前腔室和叶片驱动的热循环Figure 3 Axial sectional view of another wet rotor pump according to the invention with a divided front chamber and vane driven thermal cycle
附图4轴承座组件(根据附图3)的放大视图Enlarged view of accompanying drawing 4 bearing housing assembly (according to accompanying drawing 3)
具体实施方式detailed description
附图1显示了这项发明里湿转子泵1的轴向截面局部图。此图仅仅显示了泵1液压部分与连接泵1电动机的过渡区,这一部分是在图3里充分显示出。泵1包括定子3和被密封管2分开的转子5,6,此转子包含转子5与转子组合6,并被支承在由密封管2形子的转子室4里,并且可旋转,请看附图3。转子组合6包含永久磁铁,永久磁铁没有被进一步在图里显示的。Accompanying drawing 1 has shown the partial view of the axial section of wet rotor pump 1 in this invention. This figure only shows the transition zone between the hydraulic part of the pump 1 and the connection to the electric motor of the pump 1, which is fully shown in FIG. 3 . The pump 1 includes a stator 3 and rotors 5 and 6 separated by a sealed tube 2. The rotor includes a rotor 5 and a rotor assembly 6, and is supported in a rotor chamber 4 shaped by the sealed tube 2 and is rotatable. Please refer to the attached image 3. The rotor assembly 6 contains permanent magnets, which are not further shown in the figure.
转子轴5在一个轴向端部突出到一个泵腔室15里,并在那支撑一个叶轮7,以促进液体流动。密封管2在它叶轮一边的端部具有一个大至上径向向外延伸的凸缘8。在凸缘8与转子轴5之间有一个带有滑动轴承10的轴承座9,是用于支撑转子轴5。滑动轴承10是牢固地安装在轴承座9里。轴承座9又是牢固地安装在密封管2里。在叶轮7与凸缘8之间有一个用于稳定液体流动的环形前腔室11。此前腔室11在朝向叶轮7方向受隔离体12的限制,隔离体12在这个实施例里是形状稳定的。在朝定子3的方向,前腔室11是被凸缘8限制的。前腔室11与转子室4之间的连通仅通过位于在轴承座9和密封管2之间的外通道14和位于在滑动轴承10和轴承座9的内通道13。The rotor shaft 5 protrudes at one axial end into a pump chamber 15 and supports there an impeller 7 to facilitate the liquid flow. At its impeller-side end, the sealing tube 2 has a flange 8 extending radially outwards to the maximum. Between the flange 8 and the rotor shaft 5 there is a bearing seat 9 with a slide bearing 10 for supporting the rotor shaft 5 . Sliding bearing 10 is firmly installed in bearing block 9 li. Bearing seat 9 is firmly installed in sealing pipe 2 li again. Between the impeller 7 and the flange 8 there is an annular prechamber 11 for stabilizing the liquid flow. Heretofore the chamber 11 is delimited in the direction of the impeller 7 by a partition 12 which is dimensionally stable in this exemplary embodiment. In the direction of the stator 3 , the front chamber 11 is delimited by the flange 8 . The communication between the front chamber 11 and the rotor chamber 4 is only through the outer channel 14 located between the bearing housing 9 and the sealing tube 2 and the inner channel 13 located between the sliding bearing 10 and the bearing housing 9 .
在朝向泵腔室15轴承座9的侧面有一个部件30a,为了能插入动态密封30,动态密封30是为了密封旋转的转子轴5。作为一个动态密封件30可以使用迷宫式密封件或是间隙密封件来保持小的媒体流量。此外,在朝向泵腔室15轴承座9的侧面有一个部件35,具有一个环形槽的形式,隔离体12是被插入这环形槽里。从而在隔离体和轴承座9的接触面积形成一个圆形的密封面。On the side facing the bearing housing 9 of the pump chamber 15 there is a part 30 a for insertion of a dynamic seal 30 for sealing the rotating rotor shaft 5 . A labyrinth seal or a gap seal can be used as a dynamic seal 30 to keep the media flow low. Furthermore, on the side of the bearing seat 9 facing the pump chamber 15 there is a part 35 in the form of an annular groove into which the separating body 12 is inserted. Thus, a circular sealing surface is formed at the contact area between the isolation body and the bearing seat 9 .
隔离体12是用一种形状稳定的,具有高的传热系数的材料制成的,比如,是由具有传热导性的塑料或金属制成,它把前腔室11与泵腔室15分开。隔离体12具有一个多孔盘的形状。由于在运行过程中的转子轴5的旋转,在转子室4里的液体也被带入旋转运动。热量从定子3通过密封管2被传到转子室4,并被在转子室4里的液体吸收。液体通过内通道13与外通道14到达前腔室11。隔离体12起到换热器板的作用,把热量传递给在泵腔室15里的输送液流。The spacer 12 is made of a shape-stable material with a high heat transfer coefficient, such as plastic or metal with thermal conductivity, which connects the front chamber 11 and the pump chamber 15 separate. The separator 12 has the shape of a porous disc. Due to the rotation of the rotor shaft 5 during operation, the liquid in the rotor chamber 4 is also entrained in a rotational movement. Heat is transferred from the stator 3 to the rotor chamber 4 through the sealed tube 2 and is absorbed by the liquid in the rotor chamber 4 . The liquid reaches the front chamber 11 through the inner channel 13 and the outer channel 14 . The separator 12 acts as a heat exchanger plate, transferring heat to the delivery fluid in the pump chamber 15 .
在图1中所示的实例中,前腔室11主要是关闭的,无论在湿转子泵1的工作状态,还是在关机状态。前腔室11在径向向外方向受到一个管形外壁16的限制。In the example shown in FIG. 1 , the front chamber 11 is mainly closed, whether in the working state of the wet rotor pump 1 or in the off state. The front chamber 11 is bounded in radially outward direction by a tubular outer wall 16 .
这外壁16并行于转子轴5的轴向,并在一个轴向端部密封地贴靠在凸缘8上。此凸缘8具有一个朝向泵腔室15延伸的环形突起28,外壁16贴靠在其内侧上。在这装置区域里有一个突起29,沿着外壁16圆周延伸并密封地压着突起28的内侧。在其另一个轴向端部从外壁16过渡到隔离体12,这说明它们形成为一体。外壁的轴向长度几乎等于多孔盘外形隔离体12在径向方向的宽度,因此可以说是一个大的前腔室11的存在。This outer wall 16 runs parallel to the axial direction of the rotor shaft 5 and bears sealingly against the flange 8 at one axial end. The flange 8 has an annular projection 28 extending towards the pump chamber 15 , against which the outer wall 16 rests on its inner side. In this device region there is a protrusion 29 which extends around the circumference of the outer wall 16 and presses sealingly against the inner side of the protrusion 28 . At its other axial end the transition from the outer wall 16 to the insulating body 12 means that they are formed in one piece. The axial length of the outer wall is almost equal to the width of the porous disk-shaped separator 12 in the radial direction, so it can be said that a large front chamber 11 exists.
此外,前腔室11也是在朝转子轴5方向被密封的。在附图1所示的实例中是这样产生的,前腔室11在朝转子轴5的方向受到一内圈17的限制,内圈17贴靠在轴承座9上,特别是躺在环形部件35里。内圈17也是与隔离体12形成一体。隔离体12,内圈17与外壁16组成一个帽形的屏蔽。如所上述,动态密封30位于朝向泵腔室15的轴承座9的轴向端部,主要防止液体沿着转子轴5进入轴承座9的开放空间,从而进入前腔室11。Furthermore, the front chamber 11 is also sealed in the direction of the rotor shaft 5 . In the example shown in FIG. 1 , it is produced that the front chamber 11 is bounded in the direction of the rotor shaft 5 by an inner ring 17 which bears against the bearing seat 9 , in particular resting on the annular part 35 miles. The inner ring 17 is also integral with the insulating body 12 . The isolator 12, the inner ring 17 and the outer wall 16 form a hat-shaped shield. As mentioned above, the dynamic seal 30 located at the axial end of the bearing housing 9 towards the pump chamber 15 mainly prevents liquid from entering the open space of the bearing housing 9 along the rotor shaft 5 and thus into the front chamber 11 .
隔离体12是接近叶轮7,叶轮7与隔离体之间的距离小于叶轮直径的4%。这样增加湿转子泵1的液压效率。The spacer 12 is close to the impeller 7, and the distance between the impeller 7 and the spacer is less than 4% of the diameter of the impeller. This increases the hydraulic efficiency of the wet rotor pump 1 .
湿转子泵在工作状态下,液体从前腔室11通过位于密封管2与轴承座9之间的通道14流向轴向室4。此外,液体被旋转的转子轴5通过轴承间隙被输送,并在轴承10的一个轴向端部流出,在从那里流入位于轴承10与轴承座9之间的一个通道13,从通道13有一部分作为润滑的液体在另一轴向端流入轴承间隙。由此通过轴承间隙,产生了在转子室4里的液体循环。When the wet rotor pump is in working state, the liquid flows from the front chamber 11 to the axial chamber 4 through the channel 14 between the sealing tube 2 and the bearing seat 9 . In addition, the liquid is conveyed by the rotating rotor shaft 5 through the bearing gap and flows out at an axial end of the bearing 10, where it flows into a channel 13 between the bearing 10 and the bearing housing 9, from which there is a part The lubricating fluid flows into the bearing gap at the other axial end. A fluid circulation in the rotor chamber 4 thus takes place via the bearing gap.
图2示出本发明的湿转子泵1的另一个实施例。在这里,使用一个有柔韧性的隔膜12a的隔离体代替了形状稳定的隔离体12,隔膜12a是用有弹性材料所制成。FIG. 2 shows another embodiment of the wet rotor pump 1 of the invention. Here, instead of the dimensionally stable spacer 12 , a spacer with a flexible membrane 12 a made of an elastic material is used.
隔膜12a被固定在内圈17上,其中,它是在内圈17的轴环上被牢固地夹紧着。在朝向叶轮7方向外壁16轴端的正面上,隔膜12a松散躺在上面,至少在叶轮7旋转时,由此使隔膜12a是不透液件地,但不气密地被压到外壁16上。这具有的优点是,在填满泵1的过程中,被泵输送的液体可以通过一个非常小的间隙进入转子室4,空气可以在转子室4或者在前腔室11的最高点溢出。泵1在工作状态下,在泵腔室15与转子室4之间形成一个压力差,这个压力差把隔离件12a紧紧地推压在外壁16上,同时把隔离件12a包括内圈17推压在轴承座9的部件35里。The diaphragm 12a is fastened to the inner ring 17, wherein it is firmly clamped on the collar of the inner ring 17. On the front side of the axial end of the outer wall 16 towards the impeller 7, the membrane 12a lies loosely thereon, at least when the impeller 7 rotates, so that the membrane 12a is pressed against the outer wall 16 in a liquid-tight but airtight manner. This has the advantage that, during filling of the pump 1 , the pumped liquid can enter the rotor chamber 4 through a very small gap and air can escape in the rotor chamber 4 or at the highest point of the front chamber 11 . When the pump 1 is in operation, a pressure difference is formed between the pump chamber 15 and the rotor chamber 4, and this pressure difference pushes the spacer 12a tightly against the outer wall 16, and at the same time pushes the spacer 12a including the inner ring 17. Press in part 35 of bearing housing 9.
为了稳定隔膜12a,外壁16是通过径向横杆17a与同轴内圈17被连接在一起。当泵1在运行时,隔膜12a会由于泵腔室15里的压力被压向后方,因此隔膜12a也会躺在横杆17a上。To stabilize the diaphragm 12a, the outer wall 16 is connected to the coaxial inner ring 17 by means of radial crossbars 17a. When the pump 1 is running, the diaphragm 12a will be pressed backwards due to the pressure in the pump chamber 15, so that the diaphragm 12a will also lie on the crossbar 17a.
图3示出了本发明的湿转子泵另一个的实施例。在此实施例中,轴承座是具有双壁设计的。在一个外壁与内壁之间存在通道34,其中,外壁贴靠在密封管2内侧上,滑动轴承10与它的外周贴靠在内壁上。前腔室11是通过通道34与到转子室4互通地连接在一起。此外,轴承座9在它朝向叶轮7的轴向端具有一个向外壁延伸的轮缘18,轮缘18把前腔室11分隔成一个前室19和一个后室20,其中,前室19是朝向泵腔室15的,后室20是背向泵腔室15的。轮缘18与外壁16是形成一体的,并通过多个连接点过渡到外壁16里。轴承座9,轮缘18和外壁16因此而形成一个共同模制部件。在连接点之间存在开口21,22,前室19与后室20通过这些开口连接在一起。开口21,22因此位于径向向外的位置,使得隔离体12可以几乎完全被前室19里的循环液体涌过。Fig. 3 shows another embodiment of the wet rotor pump of the present invention. In this embodiment, the bearing housing is of double-wall design. There is a channel 34 between an outer wall and an inner wall, wherein the outer wall bears against the inner side of the sealing tube 2 and the slide bearing 10 with its outer circumference rests against the inner wall. The front chamber 11 is communicated with the rotor chamber 4 through a channel 34 . In addition, the bearing housing 9 has a rim 18 extending towards the outer wall at its axial end towards the impeller 7, the rim 18 divides the front chamber 11 into a front chamber 19 and a rear chamber 20, wherein the front chamber 19 is Towards the pump chamber 15 , the rear chamber 20 is facing away from the pump chamber 15 . The rim 18 is formed integrally with the outer wall 16 and transitions into the outer wall 16 through a plurality of connection points. The bearing housing 9, the rim 18 and the outer wall 16 thus form one co-moulded part. Between the connection points there are openings 21 , 22 through which the front chamber 19 and the rear chamber 20 are connected together. The openings 21 , 22 are thus located radially outwards, so that the insulating body 12 can be almost completely flooded by the circulating fluid in the antechamber 19 .
前腔室11有一个朝向转子轴5方向部分开放的空间区域23。在这空间区域23中,叶轮24,27带叶片27固定在转子轴5上,叶轮24会引起至少部份径向方向的液体流动。叶轮24被设置在轴密封圈30与轴承10之间,并位于在转子轴5上。The front chamber 11 has a spatial region 23 which is partially open in the direction of the rotor shaft 5 . In this spatial region 23 impellers 24 , 27 with blades 27 are fastened to the rotor shaft 5 , the impellers 24 causing at least partially radial flow of the liquid. The impeller 24 is arranged between the shaft sealing ring 30 and the bearing 10 and is located on the rotor shaft 5 .
转子轴5被设计成一个空心轴,带有一个可以通液体的中心孔25,该孔在背向叶轮7的轴5端部方位是开放的,并从那里合并到转子室4里。转子轴5另一个端部是关闭的。密封管2在它背向泵腔室15的一端被底部31关闭的,从而形成一个密封锅。在底部31又有一个支撑转子轴5的轴承32。The rotor shaft 5 is designed as a hollow shaft with a fluid-permeable central bore 25 which is open at the end of the shaft 5 facing away from the impeller 7 and merges from there into the rotor chamber 4 . The other end of the rotor shaft 5 is closed. The sealing tube 2 is closed at its end facing away from the pump chamber 15 by a bottom 31 so as to form a hermetic pot. On the bottom 31 there is again a bearing 32 which supports the rotor shaft 5 .
在转子轴5的轴向方向,位于转子轴叶轮24的位置,转子轴5具有一个或多个横向孔26,通过横向孔26,液体可以通过转子轴5的中心孔25而涌进前腔室11。In the axial direction of the rotor shaft 5, at the position of the rotor shaft impeller 24, the rotor shaft 5 has one or more transverse holes 26 through which liquid can flow into the front chamber through the central hole 25 of the rotor shaft 5 11.
在此,叶轮24的叶片27在轴向方向延伸到横向孔26的前面,以至于产生吸力,由此空心轴5里的液体涌出。至少一部分径向方向的液体流动会由横向孔26独自引起,因此叶轮24不是绝对必要的。In this case, the blades 27 of the impeller 24 extend in the axial direction in front of the transverse bore 26 , so that a suction force is generated, whereby the liquid in the hollow shaft 5 emerges. At least part of the liquid flow in the radial direction will be induced by the transverse holes 26 alone, so the impeller 24 is not absolutely necessary.
叶轮24径向向外输送液体并经过隔离体12b,其中,液体的热量被传递到隔离体上。液体通过轮缘18里的开口21和22从前室19流入到后室20,后室20是通过径向进口33与轴承座9里的通道34连接的在一起。液体通过进口33和通道34流进转子室4里,并吸收热量。在转子室4的背面,液体流入转子轴5开口的端部,并流向位于叶轮24位置,既转子轴5里的横向孔,从那里液体再次从转子轴5流出,流过隔离体12b,并把它的热量传递到隔离体上。以这种方式形成了一个有效的和封闭式的冷却系统。The impeller 24 conveys the liquid radially outward and past the separator 12b, where the heat of the liquid is transferred to the separator. The liquid flows from the front chamber 19 into the rear chamber 20 through the openings 21 and 22 in the rim 18, and the rear chamber 20 is connected with the channel 34 in the bearing housing 9 through the radial inlet 33. The liquid flows into the rotor chamber 4 through the inlet 33 and the channel 34 and absorbs heat. On the back side of the rotor chamber 4, the liquid flows into the open end of the rotor shaft 5 and flows to the transverse hole in the rotor shaft 5 at the position of the impeller 24, from where the liquid flows out from the rotor shaft 5 again, flows through the separator 12b, and transfers its heat to the insulator. In this way an efficient and closed cooling system is formed.
叶轮一侧轴承组件的放大显示于附图4里。An enlarged view of the impeller side bearing assembly is shown in Figure 4.
根据附图3与附图4的实施例中,隔离体12b是用具有柔韧性的金属片所制成的。湿转子泵在不工作状态下,也就是不加压的状态下,隔离12b在它径向向外的周边缘的整个区域与外壁16正面形成间隙,并且湿转子泵1在工作状态下,隔离体12b由于泵腔室里的压力被压在外壁16上。当包括泵1的液压系统进入工作状态并被液体充满时,液体可以通过隔离体12与外壁16的间隙渗进并充满转子室4,同时空气可以通过这间隙逸出。According to the embodiment of Fig. 3 and Fig. 4, the spacer 12b is made of a flexible metal sheet. When the wet rotor pump is not working, that is, when it is not pressurized, the isolation 12b forms a gap with the front of the outer wall 16 in the entire area of its radially outward peripheral edge, and the wet rotor pump 1 is in the working state. Body 12b is pressed against outer wall 16 due to the pressure in the pump chamber. When the hydraulic system including the pump 1 is in operation and filled with liquid, the liquid can seep into and fill the rotor chamber 4 through the gap between the isolation body 12 and the outer wall 16, while air can escape through the gap.
作为进一部的优点,在前腔室11里,特别是在前室19里,颗粒物和沉淀物可以沉底,并可以停留在外壁16的内侧。为了这些颗粒物可以进入泵腔室15,外壁16的内侧可以在朝向叶轮7的方向倾斜,此泵1的扩展方案没有在附图中显示。颗粒物在所形成的斜坡面下滑,通过间隙滑入泵腔室15,泵1只要一重新进入工作状态,颗粒物就会从那里再次被输出。As a further advantage, in the antechamber 11 , especially in the antechamber 19 , particles and sediments can sink to the bottom and stay on the inside of the outer wall 16 . In order for these particles to enter the pump chamber 15 , the inside of the outer wall 16 can be inclined in the direction of the impeller 7 , an extension of the pump 1 is not shown in the figures. The particles slide down the slope formed and slip through the gap into the pump chamber 15, from where they are discharged again as soon as the pump 1 is put into operation again.
Claims (35)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102011121149A DE102011121149A1 (en) | 2011-12-15 | 2011-12-15 | Wet runner pump with prechamber |
DE102011121149.0 | 2011-12-15 |
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CN103161735A CN103161735A (en) | 2013-06-19 |
CN103161735B true CN103161735B (en) | 2017-05-10 |
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CN201210544532.2A Active CN103161735B (en) | 2011-12-15 | 2012-12-14 | Wet rotor pump with pre-chamber |
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EP (1) | EP2604860B1 (en) |
CN (1) | CN103161735B (en) |
DE (1) | DE102011121149A1 (en) |
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DE102013107986A1 (en) * | 2013-07-25 | 2015-01-29 | Xylem Ip Holdings Llc | circulating pump |
EP2853749A1 (en) * | 2013-09-25 | 2015-04-01 | Siemens Aktiengesellschaft | Fluid-energy-machine, method to operate |
DE102014008971A1 (en) * | 2014-06-23 | 2015-12-24 | Wilo Se | Wet rotor motor pump |
ES2723977T3 (en) | 2014-11-13 | 2019-09-04 | Caprari Spa | Electric pump with closed loop cooling system |
CN106321459A (en) * | 2015-07-07 | 2017-01-11 | 杭州三花研究院有限公司 | Electric driving pump |
DE102015012277A1 (en) | 2015-09-24 | 2017-03-30 | Ebm-Papst St. Georgen Gmbh & Co. Kg | fan unit |
KR102367740B1 (en) * | 2015-11-18 | 2022-02-28 | 한온시스템 주식회사 | Air blower for vehicle |
CN107269545A (en) * | 2016-04-06 | 2017-10-20 | 德昌电机(深圳)有限公司 | Pump machine |
DE102017214997A1 (en) * | 2017-08-28 | 2019-02-28 | Mahle International Gmbh | Electric fluid pump |
DE102018009849B4 (en) * | 2018-12-18 | 2024-08-08 | Wilo Se | Wet rotor pump |
DE102019003689B4 (en) * | 2019-05-24 | 2021-01-14 | Diehl Aviation Gilching Gmbh | Axial fan |
DE102020100595A1 (en) * | 2020-01-13 | 2021-07-15 | Schwäbische Hüttenwerke Automotive GmbH | Pump-motor unit for a gearbox, for example |
DE102020107584A1 (en) * | 2020-03-19 | 2021-09-23 | KSB SE & Co. KGaA | Centrifugal pump with canned motor |
DE102020209616A1 (en) * | 2020-07-30 | 2022-02-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | liquid pump |
CN116517871A (en) * | 2023-05-24 | 2023-08-01 | 上海鸣志电器股份有限公司 | Bearing support for pump and wet running pump unit with bearing support |
CN119914569A (en) * | 2023-10-30 | 2025-05-02 | 格兰富控股公司 | Electric Motor |
DE102024102022A1 (en) * | 2024-01-24 | 2025-07-24 | Bühler Motor GmbH | SEPARATION ELEMENT FOR A LIQUID PUMP |
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Also Published As
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EP2604860A1 (en) | 2013-06-19 |
DE102011121149A1 (en) | 2013-06-20 |
CN103161735A (en) | 2013-06-19 |
EP2604860B1 (en) | 2020-02-05 |
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