对于双吸泵大家应该并不陌生，双吸泵作为离心泵的一种重要形式，因其具有扬程高、流量大等特点，在工程中得到广泛应用。这种泵型的叶轮实际上由两个背靠背的叶轮组合而成，从叶轮流出的水流汇入一个蜗壳中。双吸泵具有如下一些特点：它相当于两个相同直径的单吸叶轮同时工作，在同样的叶轮外径下流量可增大一倍;泵壳水平中开，检查和维修方便，同时，双吸泵进出口在同一方向上且垂直于泵轴，利于泵和进出水管的布置与安装;双吸泵的叶轮结构对称，没有轴向力，运行较平稳。在我国黄河沿线地区提灌泵站流量较大、扬程都较高，大多采用双吸离心泵。南水北调中线惠南庄泵站也采用了双吸泵进行供水。

As an important form of centrifugal pump, double suction pump, as an important form of centrifugal pump, has been widely used in engineering because of its high lift, large flow and so on. This pump impeller is actually composed of two back-to-back impellers, which flow from the impeller into a volute. The double suction pump has the following characteristics: it works at the same time as two single suction impeller with the same diameter. The flow rate can be doubled under the same impeller diameter; the pump shell is open in the horizontal, and the inspection and maintenance are convenient. At the same time, the inlet and outlet of the double suction pump is in the same direction and perpendicular to the pump shaft, which is beneficial to the arrangement and installation of the pump and the inlet and outlet pipe. The impeller of the double suction pump has symmetrical structure, no axial force and stable operation. Pumping stations in the Yellow River along the region have larger flow and higher lift. Most of them are double suction centrifugal pumps. The double suction pump is also used to supply water at the Hui Nan Zhuang pumping station in the middle route of the south to North Water Transfer Project.

但你知道该怎样维护双吸泵吗?下面让我们给你详细介绍一下。

But do you know how to maintain the double suction pump? Let's give you a detailed introduction below.

双吸泵的特点是结构简单可靠，经久耐用。在双吸泵正常情况下，一般不需要经常拆开保养。当发现故障后随时给予排除既可。

The double suction pump is characterized by its simple and reliable structure and durability. Under the normal condition of double suction pumps, there is usually no need for regular dismantling and maintenance. When a fault is found, it can be removed at any time.

深井潜水泵、微型潜水泵、不锈钢潜水泵、热水潜水泵、潜水排污泵

Deep well submersible pumps, submersible pumps, stainless steel submersible pumps, hot water submersible pumps, submersible sewage pumps

1、维护双吸泵时应注意几个主要部位：

1, attention should be paid to several main parts when maintaining double suction pumps.

A、滚动轴承：当长期运行后，轴承磨损到一定程度时，须进行更换。

A, rolling bearing: when the bearing is worn to a certain extent after long term operation, it must be replaced.

B、前密封环、后密封环：当密封环磨损到一定程度时，须进行更换。

B, front seal ring and rear seal ring: when the seal ring is worn to a certain extent, it must be replaced.

C、机械密封：双吸泵机械密封在不漏液的情况下，一般不应拆开检查。若轴承体下端泄漏口处产生严重泄漏时，则应对机械密封进行拆检。装拆机械密封时，必须轻取轻放，注意配合面的清洁，保护好静环和动环的镜面，严禁敲击碰撞。因机械密封而产生泄漏的原因主要是摩擦副镜面拉毛所至。其修复办法：可对摩擦副端面进行研磨使恢复镜面。机械密封产品泄漏的另一原因是O形圈安装不当、或者变开老化所至。此时则需更换O形圈进行重新装配。

C, mechanical seal: double suction pump mechanical seal in the case of no leakage, generally should not be opened up for inspection. If there is a serious leakage at the lower end of the bearing body, mechanical seals should be dismantled. When assembling and dismantling mechanical seals, it is necessary to take light care lightly, pay attention to the cleaning of the mating surfaces, and protect the mirrors of the stationary rings and the moving rings. The main reason for leakage due to mechanical seal is friction surface. Its repair method: friction pairs can be rubbed to restore the mirror surface. Another reason for the leakage of mechanical seals is the improper installation of O rings or the aging of them. At this point, the O ring should be replaced for reassembly.

双吸泵的结构性能：

Structure performance of double suction pump:

1.结构紧凑、占地空间小、轴向尺寸大压缩

1. compact structure, small space occupation and large axial size.

2.振动小、噪音低，主要采取如下措施减小振动和降低噪音

2. small vibration and low noise. The following measures should be taken to reduce vibration and reduce noise.

3.泵壳采用双蜗壳结构

Double shell structure of 3. pump shell

4.转子部件轴向尺寸短且刚性好

4. rotor parts have short axial size and good rigidity.

5.泵轴采用进口高精度轴承支撑

The 5. pump shaft adopts imported high precision bearing support

双吸泵的结构说明：

The structure of the double suction pump is described as follows:

SOW系列屏蔽泵为水平中开结构型式，吸入口、吐出口均在水泵轴心线下方，与轴线垂直成水平方向，这种结构型式泵在检修时不需拆卸进出口管路，拆装检修时性及为方便。转子整体为一组合部件，可以整体吊装便于检修，同时同一转子部件可用于反向旋转。

The SOW series shield pump is a horizontal open structure type. The suction mouth and spit exit are under the pump axle center line and vertical to the axis. This type of structure pump does not need to disassemble the import and export pipeline when overhauling, and it is convenient to disassemble and repair. The rotor is an integral part, which can be hoisted and easy to be repaired, and the same rotor part can be used for reverse rotation.

两端轴承选用高精度进口深沟球轴承，运行平稳，噪音低，使用寿命长，采用油脂润滑方式。

The two ends bearing adopt high precision imported deep groove ball bearings, running smoothly, low noise, long service life, grease lubrication.

轴封选用机械密封或填料密封两种型式，用户可自选择。

The shaft seal adopts two types: mechanical seal or packing seal. Users can choose it automatically.