Horizontal multistage pump axial inlet device and connecting structure thereof
A horizontal and pump shaft technology is applied in the field of the axial inlet device of a horizontal multi-stage pump and its connection structure, which can solve the problems of the bulky axial inlet device and the large friction area of the sliding bearing, and achieve light weight and a bearing friction area. Small, low friction loss effect
Active Publication Date: 2014-08-20
ZHEJIANG JIALI TECH
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Problems solved by technology
[0003] The technical problem to be solved and the technical task proposed by the present invention are to overcome the defects of bulky axial inlet device and large friction area of the sliding bearing in the existing horizontal multistage pump, and provide a horizontal multistage pump axial inlet device and its connection structure
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[0022] The present invention will be further described below in conjunction with the accompanying drawings of the description.
[0023] Horizontal multistage pump axial inlet device of the present invention, as figure 1 , 2 As shown, it includes: the main part of the inlet device 3, the fixing device 2, the connecting pipe 8 and the wear-resistant sleeve 12, the fixing device 2 and the connecting pipe 8 are fixed on the main part 3 of the inlet device, and the wear-resistant sleeve 12 is fixed on the inlet On the inner hole of the main part 3 of the device. The connecting pipe 8 is used to communicate with the lubricating and cooling return pipeline of the mechanical seal.
[0024] Further: the main part 3 of the inlet device is integrally made of an outer rotating body, a bottomed cylinder 3b and a rib plate 3c, the bottomed cylinder 3b is located inside the outer rotating body, and the rib plate 3c is connected between the outer rotating body and the bottomed circle betwe...
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The invention discloses a horizontal multistage pump axial inlet device. The existing horizontal multistage pump has the problems that an axial inlet device is heavy and the frictional area of a sliding bearing is large. The horizontal multistage pump axial inlet device comprises an inlet device main part, a connecting pipe, penetrating lever fixing devices and a wear-proof casing; the inlet device main part comprises an external rotating body and an internal barrel with a inside which are coaxial, and a rib plate; an inlet flange is formed at one end of the external rotating body, and is used for being connected with an inlet pipeline; a cover plate is formed at the other end of the external rotating body, and is used for being communicated with a first-stage section; the connecting pipe is formed at the upper part of the external rotating body, and is used for being communicated with a mechanical sealing lucubrating cooling return pipeline; the penetrating lever fixing devices are arranged on the periphery of the cover plate, and is used for fixing penetrating levers; and the internal barrel with the bottom is used for fixing a sliding bearing. The multistage pump axial inlet device has a small volume and light weight, and simultaneously has the effect of a bearing seat. The multistage pump axial inlet device ensures that the structure of a multistage inlet end is light and compact, the frictional area of the bearing is small, and the frictional loss is low. As the wear-proof casing is arranged in the position of an opening ring, the local wear resistance is improved.
Description
technical field [0001] The invention belongs to a horizontal multistage pump, in particular to an axial inlet device and a connecting structure of a horizontal multistage pump. Background technique [0002] Horizontal multistage pumps are widely used in membrane seawater desalination, water conservancy, petrochemical, sewage treatment and other industries. The horizontal multistage pumps that have been widely used in the past mainly have the structure of upper inlet and upper outlet. When the multistage pump of this structure is working, the overall flow direction of the conveying medium in the pump is deflected by nearly 180°, and the flow loss is very large. The horizontal multistage pumps for membrane seawater desalination developed rapidly in recent years mostly adopt the form of axial suction and upper outlet. The main flow direction of the conveying medium in the pump is deflected by nearly 90°, and the flow loss is reduced. At present, in the axially imported horizon...
Claims
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IPC IPC(8): F04D29/00F04D29/42F04D1/06
Inventor 汪家琼蔡银芳钱永康
Owner ZHEJIANG JIALI TECH