CN215890583U

CN215890583U - Guide vane body for horizontal two-stage centrifugal pump

Info

Publication number: CN215890583U
Application number: CN202122121732.4U
Authority: CN
Inventors: 徐秀生; 陈修藤
Original assignee: Shanghai Liancheng Group Dalian Chemical Pump Manufacturing Co ltd
Current assignee: Shanghai Liancheng Group Dalian Chemical Pump Manufacturing Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-22
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a guide vane body for a horizontal two-stage centrifugal pump, which comprises a guide vane and a rotating shaft, wherein the rotating shaft is inserted into the guide vane, a primary impeller and a secondary impeller are sleeved on the rotating shaft, one end of the primary impeller is contacted with one end of the secondary impeller, one side of the guide vane is fixedly provided with a mouth ring, a gap is arranged between the primary impeller and the mouth ring, the outer part of the secondary impeller is provided with a rear cover, one end of the guide vane is fixedly connected with one end of the rear cover, the utility model relates to the technical field of centrifugal pumps, and provides a guide vane body applied to the primary impeller of an end-suction two-stage centrifugal pump, the guide vane body is provided with a guide vane part, the guide vane part is integrated by casting, the whole body is convenient to replace, the quick installation is realized, the working efficiency is improved, and the guide vane body is fastened by bolts and nuts in a suction section and a pump body so as to prevent the guide vane from rotating, and the guide vane is fixed on the pump body and the rear cover through a pin, so that the stable working target of the guide vane is ensured.

Description

Guide vane body for horizontal two-stage centrifugal pump

Technical Field

The utility model relates to the technical field of centrifugal pumps, in particular to a guide vane body for a horizontal two-stage centrifugal pump.

Background

For the conveying of the medium easy to vaporize, the requirements of small cavitation allowance, large conveying flow and high operation efficiency exist, for the low cavitation two-stage centrifugal pump, the suction condition and the flow guiding effect of the first-stage impeller are directly influenced by the design of the guide vane, the cavitation performance and the efficiency of the pump are obviously influenced, if the guide vane body adopts a common type, the suction condition of the water pump is difficult to meet, and meanwhile, larger internal flow field vortex is easy to generate to influence the inflow condition of the secondary impeller.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a guide vane body for a horizontal two-stage centrifugal pump, which solves the problem that the existing device is difficult to meet the suction condition of the water pump.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a horizontal two-stage is guide vane body for centrifugal pump, includes stator and pivot, the pivot is inserted inside the stator, first impeller and secondary impeller have been cup jointed in the pivot, first impeller one end with reach secondary impeller one end and contact, stator one side fixed mounting has the choma, first impeller with be equipped with the clearance between the choma, secondary impeller outside is equipped with the back lid, stator one end with back lid one end fixed connection.

Preferably, pivot one end has connect the impeller bolt soon, the jack has been seted up to impeller bolt lateral wall, first-stage impeller one end fixed mounting has the inserted block, the jack cup joints in the inserted block outside.

Preferably, the other end of the guide vane is provided with a plurality of first pins with the same structure, one end of each first pin is provided with a pair of second pins, and one end of each second pin is inserted into the rear cover.

Preferably, the primary impeller and the secondary impeller are of equal diameter.

Advantageous effects

The utility model provides a guide vane body for a horizontal two-stage centrifugal pump, which has the following beneficial effects that the structure of the device is compact, a first-stage impeller of the guide vane body for the horizontal two-stage centrifugal pump is arranged in the guide vane, the impeller is rotated at high speed, fluid is guided into an inlet of a secondary impeller through the guide vane to realize acting, and the guide vane body consists of a guide vane part and an opening ring part; wherein the guide vane is provided with a pin which is connected with the suction section and the rear cover of the pump; the mouth ring sets up on the stator, and the clearance between first-stage impeller and the stator mouth ring can be according to the difference of medium, selects different clearances, and the use of giving people has brought the convenience.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a guide vane of the present invention.

In the figure: 1. a first stage impeller; 2. a first pin; 3. a guide vane; 4. a second pin; 5. a rear cover; 6. a secondary impeller; 7. a rotating shaft; 8. an oral ring; 9. inserting a block; 10. impeller bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a guide vane body for a horizontal two-stage centrifugal pump comprises a guide vane 3 and a rotating shaft 7, wherein the rotating shaft 7 is inserted into the guide vane 3, a first-stage impeller 1 and a secondary impeller 6 are sleeved on the rotating shaft 7, one end of the first-stage impeller 1 is in contact with one end of the secondary impeller 6, an opening ring 8 is fixedly installed on one side of the guide vane 3, a gap is formed between the first-stage impeller 1 and the opening ring 8, a rear cover 5 is arranged outside the secondary impeller 6, one end of the guide vane 3 is fixedly connected with one end of the rear cover 5, an impeller bolt 10 is screwed at one end of the rotating shaft 7, a jack is formed in the side wall of the impeller bolt 10, an insert block 9 is fixedly installed at one end of the first-stage impeller 1, the jack is sleeved outside the insert block 9, a plurality of first studs 2 with the same structure are arranged at the other end of the guide vane 3, and a pair of second studs 4 are arranged at one end of the other end of the guide vane 3, one end of the pair of second column pins 4 is inserted into the rear cover 5, and the diameters of the first-stage impeller 1 and the second-stage impeller 6 are equal.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.

Example (b): according to the guide vane for the horizontal two-stage centrifugal pump, a first-stage impeller is arranged in the guide vane 3, the impeller is rotated at a high speed, fluid is guided into an inlet of a second-stage impeller 6 through the guide vane 3 to realize acting, a guide vane body is provided with the guide vane 3 and an opening ring 8, wherein a first pin 2 and a second pin 4 are arranged on the guide vane 3 and are connected with a pump suction section and a rear cover 5; the choma 8 is arranged on the guide vane 3, the gap between the first-stage impeller 1 and the choma 8 is arranged, different gaps can be selected according to different media, and the use is convenient.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a horizontal two-stage is guide vane body for centrifugal pump, includes stator (3) and pivot (7), its characterized in that, pivot (7) are inserted inside stator (3), first impeller (1) and secondary impeller (6) have been cup jointed on pivot (7), first impeller (1) one end with and secondary impeller (6) one end contact, stator (3) one side fixed mounting has oral ring (8), first impeller (1) with be equipped with the clearance between oral ring (8), secondary impeller (6) outside is equipped with back lid (5), stator (3) one end with back lid (5) one end fixed connection.

2. The guide vane body for the horizontal two-stage centrifugal pump according to claim 1, wherein one end of the rotating shaft (7) is rotatably connected with an impeller bolt (10), a jack is formed in the side wall of the impeller bolt (10), an insert block (9) is fixedly mounted at one end of the first-stage impeller (1), and the jack is sleeved outside the insert block (9).

3. The guide vane body for the horizontal two-stage centrifugal pump according to claim 1, wherein a plurality of first pins (2) with the same structure are arranged at the other end of the guide vane (3), a pair of second pins (4) are arranged at one end of the guide vane, and one ends of the pair of second pins (4) are inserted into the rear cover (5).

4. Guide vane body for a horizontal two-stage centrifugal pump according to claim 1, characterized in that the primary impeller (1) and the secondary impeller (6) are of equal diameter.