WO2023056598A1 - 一种具有过滤功能的立式双极离心泵 - Google Patents

一种具有过滤功能的立式双极离心泵 Download PDF

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Publication number
WO2023056598A1
WO2023056598A1 PCT/CN2021/122606 CN2021122606W WO2023056598A1 WO 2023056598 A1 WO2023056598 A1 WO 2023056598A1 CN 2021122606 W CN2021122606 W CN 2021122606W WO 2023056598 A1 WO2023056598 A1 WO 2023056598A1
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Prior art keywords
centrifugal pump
block
filtering function
bipolar centrifugal
buffer
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PCT/CN2021/122606
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English (en)
French (fr)
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陈平
孙仙友
孙丹清
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绿美泵业有限公司
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Priority to PCT/CN2021/122606 priority Critical patent/WO2023056598A1/zh
Publication of WO2023056598A1 publication Critical patent/WO2023056598A1/zh

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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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Definitions

  • the utility model belongs to the technical field of centrifugal pumps, in particular to a vertical bipolar centrifugal pump with filtering function.
  • the main control parameters selected by the vertical centrifugal pump are the flow Q of the pump, the head H, the efficiency ⁇ , the power, the speed n, the working pressure, the necessary cavitation head (NPSH), etc.
  • the mechanical energy is transferred to the liquid. Due to the action of the centrifugal pump, the speed energy and pressure energy of the liquid are increased when the liquid flows from the impeller inlet to the outlet. The liquid discharged by the impeller passes through the extrusion chamber, and most of the velocity energy is converted into pressure energy, and then It is sent out along the discharge pipeline.
  • centrifugal pumps currently on the market cannot filter the water well during the process of pressurizing water, which in turn causes a large amount of impurities to enter the interior of the centrifugal pump and accumulate impurities on the filter screen, causing serious internal blockages and slow pumping efficiency. Slow down; and the traditional centrifugal pump in the working process, accompanied by the operation of the centrifugal pump, will continue to generate vibration and noise, the mechanical vibration caused by the motor and the air noise caused by the motor vibration are difficult to solve. Therefore, we propose a A vertical bipolar centrifugal pump with filtering function.
  • the utility model provides a vertical bipolar centrifugal pump with a filtering function, which effectively solves the problem that the centrifugal pumps currently on the market cannot perform well in the process of pressing water.
  • the water is filtered, and then a large amount of impurities enter the centrifugal pump, causing serious internal blockage problems, resulting in a gradual decrease in pumping efficiency, and the traditional centrifugal pump will continue to generate Vibration and noise issues.
  • a vertical bipolar centrifugal pump with filtering function comprising a bipolar centrifugal pump main body, a fixed block is fixedly installed on the bottom of the bipolar centrifugal pump main body, the One end of the output end of the main body of the bipolar centrifugal pump is fixedly installed with a rotating blade, one side of the fixed block is fixedly connected with an installation block, one side of the installation block is movably installed with a connector, and a number one is fixed inside the connector filter screen, the connector is fixedly installed with a movable disk on one side of the No. 1 filter screen, and a rotating disk is installed on one side of the movable disk;
  • the internal thread of the bit block is connected with the limit bolt, as mentioned above, the No. 2 filter screen is fixedly installed inside the mounting block;
  • the bottom of the fixed block is fixedly connected with a connecting plate
  • the outside of the connecting plate is movably installed with a buffer block
  • the bottom of the connecting plate is fixedly connected with a buffer plate
  • the bottom of the buffer plate is movably installed with a movable spring.
  • One side of the buffer plate is fixedly connected with a slide block
  • the bottom of the buffer block is fixedly connected with a bottom plate
  • the inner thread of the bottom plate is sleeved with fixing bolts.
  • the movable disk and the rotating disk are arranged in parallel, and through holes are opened inside the movable disk and the rotating disk.
  • the inside of the installation block is provided with a filtering area and a working area through the No. 2 filter, and the filtering area and the working area are arranged in a staggered manner.
  • both the inside of the limiting block and the end of the rotating disk are provided with limiting holes, and the size of the limiting block is adapted to the limiting bolt.
  • one side of the inner chamber of the buffer block is provided with a sliding groove, and the sliding groove is adapted to the sliding block.
  • the outside of the fixing bolt and the inside of the bottom plate are respectively provided with external threads and internal threads, and the external threads of the fixing bolt are matched with the internal threads of the bottom plate.
  • the No. 1 filter performs the first step of filtering and removing impurities to remove large-volume impurities before entering the installation
  • the water flow inside the block passes through the No. 2 filter screen and is further filtered to remove small solid impurities in the water flow.
  • the filtered water flow enters the main body of the bipolar centrifugal pump from the working area and is filtered and left The impurities will stay in the filter area.
  • connection plate When the centrifugal pump vibrates, it will drive the connection plate and buffer plate to move up and down, compress the movable spring, and make the movable spring produce a reverse direction.
  • the movement trend of the slider makes the slider move in the chute on the side of the inner cavity of the buffer block, thereby alleviating the vibration generated by the centrifugal pump, reducing the noise caused by the vibration, and avoiding the continuous generation of vibration caused by the operation of the centrifugal pump. Vibration and noise issues.
  • Fig. 1 is the front sectional view of structure of the present utility model
  • Fig. 2 is the front schematic diagram of structure of the present utility model
  • Fig. 3 is the local schematic diagram in the utility model structure
  • the utility model includes a bipolar centrifugal pump main body 1, a fixed block 3 is fixedly installed at the bottom of the bipolar centrifugal pump main body 1, and a fixed block 3 is fixedly installed at one end of the output end of the bipolar centrifugal pump main body 1.
  • Rotating blade 2 one side of fixed block 3 is fixedly connected with installation block 4, one side of installation block 4 is movably installed with connector 5, inside of connector 5 is fixedly installed with No. 1 filter net 6, and connector 5 is located at No.
  • the inside of one side of the net 6 is fixedly equipped with a movable disc 7, and one side of the movable disc 7 is movably installed with a rotating disc 8, and the top of the installation block 4 is fixedly installed with a limit block 9, and the internal thread of the limit block 9 is connected with a limit bolt 10 , the interior of the installation block 4 is fixedly installed with a No. 2 filter screen 11;
  • the bottom of the fixed block 3 is fixedly connected with a connecting plate 14, and the outside of the connecting plate 14 is movably equipped with a buffer block 15, and the bottom of the connecting plate 14 is fixedly connected with a buffer plate 20, and the bottom of the buffer plate 20 is movably equipped with a movable spring 17, and the buffer plate
  • One side of 20 is fixedly connected with a slide block 16
  • the bottom of the buffer block 15 is fixedly connected with a bottom plate 19
  • the inner thread of the bottom plate 19 is sleeved with fixing bolts 18 .
  • the movable disk 7 and the rotating disk 8 are arranged in parallel, and the insides of the movable disk 7 and the rotating disk 8 are provided with through holes; , remove larger volume of impurities, rotate the rotating disk 8, control the coincidence of the internal through holes of the movable disk 7 and the rotating disk 8, and reduce the overlap of the through holes of the movable disk 7 and the rotating disk 8 to prevent larger solid waste from entering the installation Inside the block 4, the overlapping ratio of the through holes of the movable disc 7 and the rotating disc 8 is selected according to the actual situation to adjust the effect of filtering impurities.
  • the inside of the installation block 4 is provided with a filter area 12 and a working area 13 through the No. 2 filter screen 11, and the filter area 12 and the working area 13 are arranged in a staggered manner;
  • the water flow passes through the No. 2 filter screen 11 for further filtration to remove small solid impurities in the water flow, and finally the filtered water flow enters the main body 1 of the bipolar centrifugal pump from the working area 13, and the impurities left by the filtration will stay in the filter area 12 ,
  • Multiple parts are used for water flow filtration, which increases the filtration effect and prevents a large amount of impurities from entering the inside of the centrifugal pump, causing serious internal blockage, resulting in the problem that the pumping efficiency will gradually decrease.
  • the inside of the limit block 9 and the end of the rotating disc 8 are all provided with limit holes, and the size of the limit block 9 is compatible with the limit bolt 10; , the limit bolt 10 is screwed into the end of the limit block 9 and the rotating disk 8, the positions of the movable disk 7 and the rotating disk 8 are fixed, and the situation that the rotating disk 8 rotates under the action of the water flow is avoided.
  • one side of the buffer block 15 inner cavity is provided with a chute, and the chute is matched with the slider 16; when the centrifugal pump vibrates, it will drive the connecting plate 14 and the buffer plate 20 to move up and down, and the movable spring 17 will Compression, so that the movable spring 17 produces a reverse movement trend, so that the slider 16 moves in the chute on the side of the inner cavity of the buffer block 15, thereby alleviating the vibration generated by the centrifugal pump, reducing the noise caused by the vibration, and avoiding With the operation of the centrifugal pump, there will be constant vibration and noise.
  • the outside of the fixing bolt 18 and the inside of the bottom plate 19 are respectively provided with external threads and internal threads, and the external threads of the fixing bolt 18 are compatible with the internal threads of the bottom plate 19;
  • the bottom plate 19 is placed On the installation base, the fixing bolt 18 is screwed into and passes through the bottom plate 19 to install the base, and then the centrifugal pump is fixed to further prevent the centrifugal pump from vibrating.
  • the centrifugal pump When the centrifugal pump vibrates, it will drive the connecting plate 14 and the buffer plate 20 to move up and down, and the movable spring 17 will be compressed, so that the movable spring 17 will have a reverse movement trend, so that the slider 16 will move in the inner cavity of the buffer block 15. Move in the chute on the side, thereby alleviating the vibration generated by the centrifugal pump, reducing the noise caused by the vibration, and avoiding the problem of continuous vibration and noise accompanied by the operation of the centrifugal pump.
  • the bottom plate 19 When it is necessary to install a bipolar centrifugal pump , the bottom plate 19 is placed on the installation base, and then the fixing bolt 18 is screwed in and passed through the bottom plate 19 to install the base, and then the centrifugal pump is fixed to further prevent the centrifugal pump from vibrating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种具有过滤功能的立式双极离心泵，包括双极离心泵主体（1），双极离心泵主体（1）的底部固定安装有固定块（3），双极离心泵主体（1）输出端的一端固定安装有旋转叶片（2），固定块（3）的一侧固定连接有安装块（4），安装块（4）的一侧活动安装有连接头（5）。

Description

一种具有过滤功能的立式双极离心泵 技术领域
本实用新型属于离心泵技术领域，具体为一种具有过滤功能的立式双极离心泵。
背景技术
立式离心泵选用的主要控制参数为水泵的流量Q、扬程H、效率η、功率、转速n、工作压力、必需气蚀余量(NPSH)等，依靠旋转叶轮对液体的作用把原动机的机械能传递给液体，由于离心泵的作用液体从叶轮进口流向出口的过程中，其速度能和压力能都得到增加，被叶轮排出的液体经过压出室，大部分速度能转换成压力能，然后沿排出管路输送出去，这时，叶轮进口处因液体的排出而形成真空或低压，吸水池中的液体在液面压力/大气压的作用下，被压入叶轮的进口，于是，旋转着的叶轮就连续不断地吸入和排出液体，适用于工业和城市给排水，高层建筑增压送水，园林喷灌，消防增压，远距离输送，暖通制冷循环。
但是目前市场上的离心泵在进行压水的过程中不能很好的对水分进行过滤，进而使得大量杂质进入离心泵内部使得过滤网上的杂质堆积，造成内部堵塞严重的问题，导致抽水效率会慢慢降低；且传统的离心泵在工作过程中，伴随着离心泵的运行，会不停产生震动和噪音，电机引起的机械振动以及电机振动引起的空气噪声难以解决，为此，我们提出了一种具有过滤功能的立式双极离心泵。
发明内容
针对上述情况，为克服现有技术的缺陷，本实用新型提供一种具有过滤功能的立式双极离心泵，有效的解决了目前市场上的离心泵在进行压水的过程中不能很好的对水分进行过滤，进而使得大量杂质进入离心泵内部，造成内部堵塞严重的问题，导致抽水效率会慢慢降低，且传统的离心泵在工作过 程中，伴随着离心泵的运行，会不停产生震动和噪音的问题。
为实现上述目的，本实用新型提供如下技术方案：一种具有过滤功能的立式双极离心泵，包括双极离心泵主体，所述双极离心泵主体的底部固定安装有固定块，所述双极离心泵主体输出端的一端固定安装有旋转叶片，所述固定块的一侧固定连接有安装块，所述安装块的一侧活动安装有连接头，所述连接头的内部固定安装有一号过滤网，所述连接头位于一号过滤网一侧的内部固定安装有活动盘，所述活动盘的一侧活动安装有转动盘，所述安装块的顶部固定安装有限位块，所述限位块的内部螺纹连接有限位螺栓，所述，安装块的内部固定安装有二号过滤网；
所述固定块的底部固定连接有连接板，所述连接板的外部活动安装有缓冲块，所述连接板的底部固定连接有缓冲板，所述缓冲板的底部活动安装有活动弹簧，所述缓冲板的一侧固定连接有滑块，所述缓冲块的底部固定连接有底板，所述底板的内部螺纹套接有固定螺栓。
优选的，所述活动盘和转动盘呈平行设置，且活动盘和转动盘的内部均开设有通孔。
优选的，所述安装块的内部通过二号过滤网设置有过滤区和工作区，且过滤区和工作区呈交错设置。
优选的，所述限位块的内部和转动盘的端部均开设有限位孔，所述限位块的大小与限位螺栓相适配。
优选的，所述缓冲块内腔的一侧设置有滑槽，所述滑槽与滑块相适配。
优选的，所述固定螺栓的外部和底板的内部分别设置有外螺纹和内螺纹，且固定螺栓的外螺纹与底板的内螺纹相适配。
与现有技术相比，本实用新型的有益效果是：
1)、在工作中，通过一号过滤网、活动盘、转动盘和二号过滤网，水流经过连接头时一号过滤网进行第一步过滤除杂，除去较大体积的杂质，进入 安装块内部的水流在旋转叶片产生的吸力作用下，水流经过二号过滤网，进一步过滤，除去水流中较小的固体杂质，最后过滤后的水流从工作区进入双极离心泵主体，过滤留下来的杂质会留在过滤区，取下连接头后可以对过滤区和二号过滤网上较小杂质进行清理，避免大量杂质进入离心泵内部，造成内部堵塞严重的问题，导致抽水效率会慢慢降低的问题；
2)、通过连接板、缓冲块、滑块、活动弹簧和缓冲板，当离心泵产生震动时，会带动连接板和缓冲板上下移动，会对活动弹簧进行压缩，使活动弹簧产生一个反向的运动趋势，使滑块在缓冲块内腔一侧的滑槽内移动，进而缓解离心泵产生的震动，减小因震动而产生的噪音，避免了伴随着离心泵的运行，会不停产生震动和噪音的问题。
附图说明
附图用来提供对本实用新型的进一步理解，并且构成说明书的一部分，与本实用新型的实施例一起用于解释本实用新型，并不构成对本实用新型的限制。在附图中：
图1为本实用新型结构的正面剖视图；
图2为本实用新型结构的正面示意图；
图3为本实用新型结构中的局部示意图；
图中：1、双极离心泵主体；2、旋转叶片；3、固定块；4、安装块；5、连接头；6、一号过滤网；7、活动盘；8、转动盘；9、限位块；10、限位螺栓；11、二号过滤网；12、过滤区；13、工作区；14、连接板；15、缓冲块；16、滑块；17、活动弹簧；18、固定螺栓；19、底板；20、缓冲板。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型一部分实施例，而不是全部的实施例；基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
本实施例，由图1-3给出，本实用新型包括双极离心泵主体1，双极离心泵主体1的底部固定安装有固定块3，双极离心泵主体1输出端的一端固定安装有旋转叶片2，固定块3的一侧固定连接有安装块4，安装块4的一侧活动安装有连接头5，连接头5的内部固定安装有一号过滤网6，连接头5位于一号过滤网6一侧的内部固定安装有活动盘7，活动盘7的一侧活动安装有转动盘8，安装块4的顶部固定安装有限位块9，限位块9的内部螺纹连接有限位螺栓10，安装块4的内部固定安装有二号过滤网11；
固定块3的底部固定连接有连接板14，连接板14的外部活动安装有缓冲块15，连接板14的底部固定连接有缓冲板20，缓冲板20的底部活动安装有活动弹簧17，缓冲板20的一侧固定连接有滑块16，缓冲块15的底部固定连接有底板19，底板19的内部螺纹套接有固定螺栓18。
其中，活动盘7和转动盘8呈平行设置，且活动盘7和转动盘8的内部均开设有通孔；当水流进入连接头5内部时，一号过滤网6进行第一步过滤除杂，除去较大体积的杂质，旋转转动盘8，控制活动盘7和转动盘8内部通孔的重合情况，减小活动盘7和转动盘8通孔的重合可以阻止较大的固体垃圾进入安装块4的内部，根据实际情况选择活动盘7和转动盘8通孔重合率来调节过滤杂质的效果。
其中，安装块4的内部通过二号过滤网11设置有过滤区12和工作区13，且过滤区12和工作区13呈交错设置；进入安装块4内部的水流在旋转叶片2产生的吸力作用下，水流经过二号过滤网11，进一步过滤，除去水流中较小的固体杂质，最后过滤后的水流从工作区13进入双极离心泵主体1，过滤留下来的杂质会留在过滤区12，多部进行水流过滤，增加了过滤效果，避免大量杂质进入离心泵内部，造成内部堵塞严重的问题，导致抽水效率会慢慢降 低的问题。
其中，限位块9的内部和转动盘8的端部均开设有限位孔，限位块9的大小与限位螺栓10相适配；当活动盘7和转动盘8通孔重合选择好时，将限位螺栓10拧进限位块9和转动盘8的端部，对活动盘7和转动盘8的位置进行固定，避免了在水流作用下转动盘8转动的情况。
其中，缓冲块15内腔的一侧设置有滑槽，滑槽与滑块16相适配；当离心泵产生震动时，会带动连接板14和缓冲板20上下移动，会对活动弹簧17进行压缩，使活动弹簧17产生一个反向的运动趋势，使滑块16在缓冲块15内腔一侧的滑槽内移动，进而缓解离心泵产生的震动，减小因震动而产生的噪音，避免了伴随着离心泵的运行，会不停产生震动和噪音的问题。
其中，固定螺栓18的外部和底板19的内部分别设置有外螺纹和内螺纹，且固定螺栓18的外螺纹与底板19的内螺纹相适配；需要安装双极离心泵时，将底板19放在安装底座上，再将固定螺栓18拧进并穿过底板19安装底座，进而将离心泵固定好，进一步防止离心泵产生震动。
工作原理：工作时，首先检查立式双极离心泵连接处零件之间是否能正常工作，当水流进入连接头5内部时，一号过滤网6进行第一步过滤除杂，除去较大体积的杂质，旋转转动盘8，控制活动盘7和转动盘8内部通孔的重合情况，减小活动盘7和转动盘8通孔的重合可以阻止较大的固体垃圾进入安装块4的内部，根据实际情况选择活动盘7和转动盘8通孔重合率来调节过滤杂质的效果，打开双极离心泵主体1的开关，进入安装块4内部的水流在旋转叶片2产生的吸力作用下，水流经过二号过滤网11，进一步过滤，除去水流中较小的固体杂质，最后过滤后的水流从工作区13进入固定块3的内部和双极离心泵主体1，过滤留下来的杂质会留在过滤区12，多部进行水流过滤，增加了过滤效果，避免大量杂质进入离心泵内部，造成内部堵塞严重的问题，导致抽水效率会慢慢降低的问题，取下连接头5后可以对过滤区12 和二号过滤网11上较小杂质进行清理，，当活动盘7和转动盘8通孔重合选择好时，将限位螺栓10拧进限位块9和转动盘8的端部，对活动盘7和转动盘8的位置进行固定，避免了在水流作用下转动盘8转动的情况；
当离心泵产生震动时，会带动连接板14和缓冲板20上下移动，会对活动弹簧17进行压缩，使活动弹簧17产生一个反向的运动趋势，使滑块16在缓冲块15内腔一侧的滑槽内移动，进而缓解离心泵产生的震动，减小因震动而产生的噪音，避免了伴随着离心泵的运行，会不停产生震动和噪音的问题，需要安装双极离心泵时，将底板19放在安装底座上，再将固定螺栓18拧进并穿过底板19安装底座，进而将离心泵固定好，进一步防止离心泵产生震动。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型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，本实用新型的范围由所附权利要求及其等同物限定。

Claims (6)

  1. 一种具有过滤功能的立式双极离心泵，包括双极离心泵主体(1)，其特征在于：所述双极离心泵主体(1)的底部固定安装有固定块(3)，所述双极离心泵主体(1)输出端的一端固定安装有旋转叶片(2)，所述固定块(3)的一侧固定连接有安装块(4)，所述安装块(4)的一侧活动安装有连接头(5)，所述连接头(5)的内部固定安装有一号过滤网(6)，所述连接头(5)位于一号过滤网(6)一侧的内部固定安装有活动盘(7)，所述活动盘(7)的一侧活动安装有转动盘(8)，所述安装块(4)的顶部固定安装有限位块(9)，所述限位块(9)的内部螺纹连接有限位螺栓(10)，所述，安装块(4)的内部固定安装有二号过滤网(11)；
    所述固定块(3)的底部固定连接有连接板(14)，所述连接板(14)的外部活动安装有缓冲块(15)，所述连接板(14)的底部固定连接有缓冲板(20)，所述缓冲板(20)的底部活动安装有活动弹簧(17)，所述缓冲板(20)的一侧固定连接有滑块(16)，所述缓冲块(15)的底部固定连接有底板(19)，所述底板(19)的内部螺纹套接有固定螺栓(18)。
  2. 根据权利要求1所述的一种具有过滤功能的立式双极离心泵，其特征在于：所述活动盘(7)和转动盘(8)呈平行设置，且活动盘(7)和转动盘(8)的内部均开设有通孔。
  3. 根据权利要求1所述的一种具有过滤功能的立式双极离心泵，其特征在于：所述安装块(4)的内部通过二号过滤网(11)设置有过滤区(12)和工作区(13)，且过滤区(12)和工作区(13)呈交错设置。
  4. 根据权利要求1所述的一种具有过滤功能的立式双极离心泵，其特征在于：所述限位块(9)的内部和转动盘(8)的端部均开设有限位孔，所述限位块(9)的大小与限位螺栓(10)相适配。
  5. 根据权利要求1所述的一种具有过滤功能的立式双极离心泵，其特征在于：所述缓冲块(15)内腔的一侧设置有滑槽，所述滑槽与滑块(16)相 适配。
  6. 根据权利要求1所述的一种具有过滤功能的立式双极离心泵，其特征在于：所述固定螺栓(18)的外部和底板(19)的内部分别设置有外螺纹和内螺纹，且固定螺栓(18)的外螺纹与底板(19)的内螺纹相适配。
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