阅读说明：本技术 一种阻封液循环泵 (Blocking liquid circulating pump ) 是由 陈炎 李树生 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种阻封液循环泵,包括泵总成和电机,所述泵总成包括壳体、转轴和叶轮,所述转轴和所述叶轮同轴且均位于所述壳体内,所述叶轮与所述转轴固连,所述电机的输出轴伸入所述壳体内且与所述转轴可拆卸连接,所述转轴与所述壳体转动配合,所述泵总成与所述电机可拆卸连接。本发明阻封液循环泵的稳定性高,便于装配拆检。(The invention discloses a blocking liquid circulating pump which comprises a pump assembly and a motor, wherein the pump assembly comprises a shell, a rotating shaft and an impeller, the rotating shaft and the impeller are coaxial and are positioned in the shell, the impeller is fixedly connected with the rotating shaft, an output shaft of the motor extends into the shell and is detachably connected with the rotating shaft, the rotating shaft is in rotating fit with the shell, and the pump assembly is detachably connected with the motor. The blocking liquid circulating pump is high in stability and convenient to assemble, disassemble and inspect.)

1. A blocking liquid circulating pump is characterized in that: including pump assembly and motor, the pump assembly includes casing, pivot and impeller, the pivot with the impeller is coaxial and all be located in the casing, the impeller with the pivot links firmly, the output shaft of motor stretches into in the casing and with the connection can be dismantled to the pivot, the pivot with casing normal running fit, the pump assembly with the connection can be dismantled to the motor.

2. The blocking liquid circulation pump of claim 1, wherein: the casing includes drive end cover, cavity, non-drive end cover and two middle units through first bolt series connection, middle unit includes cavity end cover and bearing frame, one middle unit sets up the one end of cavity, another middle unit end cover sets up the other end of cavity, just the cavity end cover is close to the cavity, the drive end cover sets up the casing is close to the one end of motor, non-drive end cover sets up the casing is kept away from the one end of motor.

3. The blocking liquid circulation pump of claim 2, wherein: and an O-shaped sealing ring is arranged between the cavity and each cavity end cover.

4. The blocking liquid circulation pump of claim 2, wherein: and a shaft seal is arranged between the bearing seats and the cavity end cover, two bearing seats are respectively provided with a bearing, the inner ring of each bearing is fixedly connected with the rotating shaft, and the rotating shaft is in running fit with the shell through the bearing.

5. The blocking liquid circulation pump of claim 2, wherein: a low-pressure area, a volute diffusion area and a high-pressure area are arranged in the cavity.

6. The blocking liquid circulation pump of claim 1, wherein: the impeller with the pivot key-type connection, the pivot with the output shaft of motor passes through second bolt and spring washer and connects.

7. The blocking liquid circulation pump of claim 1, wherein: the pump assembly is detachably connected with the motor through a hexagon bolt.

Technical Field

The invention relates to the technical field of circulating pumps, in particular to a blocking liquid circulating pump.

Background

The mechanical seal obtains sufficient cooling and lubrication in the operation process, and is a key factor influencing the sealing performance and prolonging the service life. Therefore, the sealing liquid of the mechanical seal needs to be cooled and circulated stably enough, and the sealing liquid circulating pump plays an important role. The existing blocking liquid circulating pump is not stable enough, and the circulation of the blocking liquid is influenced.

Disclosure of Invention

The invention aims to provide a blocking liquid circulating pump, which is used for solving the problems in the prior art and improving the stability of the blocking liquid circulating pump.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a blocking liquid circulating pump which comprises a pump assembly and a motor, wherein the pump assembly comprises a shell, a rotating shaft and an impeller, the rotating shaft and the impeller are coaxial and are positioned in the shell, the impeller is fixedly connected with the rotating shaft, an output shaft of the motor extends into the shell and is detachably connected with the rotating shaft, the rotating shaft is in rotating fit with the shell, and the pump assembly is detachably connected with the motor.

Preferably, the casing includes drive end cover, cavity, non-drive end cover and two middle units through first bolt series connection, middle unit includes cavity end cover and bearing frame, one middle unit sets up the one end of cavity, another middle unit end cover sets up the other end of cavity, just the cavity end cover is close to the cavity, the drive end cover sets up the casing is close to the one end of motor, non-drive end cover sets up the casing is kept away from the one end of motor.

Preferably, an O-shaped sealing ring is arranged between the cavity and each cavity end cover.

Preferably, a shaft seal is arranged between the bearing seat and the cavity end cover, bearings are respectively arranged on the two bearing seats, an inner ring of each bearing is fixedly connected with the rotating shaft, and the rotating shaft is in running fit with the shell through the bearings.

Preferably, a low pressure region, a volute diffusion region and a high pressure region are arranged in the cavity.

Preferably, the impeller is connected with the rotating shaft key, and the rotating shaft is connected with the output shaft of the motor through a second bolt and a spring washer.

Preferably, the pump assembly is detachably connected with the motor through a hexagon bolt.

Compared with the prior art, the invention has the following technical effects:

the blocking liquid circulating pump has high stability. The invention relates to a blocking liquid circulating pump which adopts a vortex-shaped cavity and an impeller to generate relative rotation by adopting a vortex-shaped pressurizing principle, wherein blocking liquid enters the cavity from a low-pressure area, is pressurized by a vortex-shaped diffusion area under the driving of the impeller and then is discharged from a high-pressure area, and is connected through a pipeline under the action of pressure difference to finish the circulating conveying of the blocking liquid so as to achieve the pumping function. The invention adopts the universal plug seal shaft seal and is suitable for wider media and operation conditions. The invention adopts a series assembly structure, reduces the processing difficulty of parts and is convenient for assembly, disassembly and inspection. The parts of the present invention may be made of various materials, including metal, plastic, etc., to be suitable for a wide range of applications.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural view of a blocking liquid circulation pump according to the present invention;

FIG. 2 is a schematic structural diagram of a second blocking liquid circulation pump according to the present invention;

wherein: 1-motor, 2-drive end cover, 3-first bolt, 4-bearing, 5-bearing seat, 6-cavity end cover, 7-O-shaped sealing ring, 8-cavity, 9-key, 10-impeller, 11-rotating shaft, 12-shaft seal, 13-spring washer, 14-second bolt, 15-non-drive end cover and 16-hexagon 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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

The invention aims to provide a blocking liquid circulating pump, which is used for solving the problems in the prior art and improving the stability of the blocking liquid circulating pump.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 2: the blocking liquid circulating pump comprises a pump assembly and a motor 1, wherein the pump assembly is detachably connected with the motor 1 through a hexagon bolt 16.

The pump assembly includes the casing, pivot 11 and impeller 10, the casing includes drive end cover 2 through 3 series connections of first bolt, cavity 8, non-drive end cover 152 and two middle units, wherein, middle unit includes cavity end cover 6 and bearing frame 5, one middle unit sets up the one end at cavity 8, another middle unit end cover sets up the other end at cavity 8, and all be cavity end cover 6 and be closer to cavity 8 in every middle unit, drive end cover 2 sets up the one end that is close to motor 1 at the casing, non-drive end cover 152 sets up the one end of keeping away from motor 1 at the casing.

The rotating shaft 11 and the impeller 10 are coaxial and are positioned in the shell, the impeller 10 is fixedly connected with the rotating shaft 11 through a key 9, an output shaft of the motor 1 extends into the shell and is detachably connected with the rotating shaft 11 through a second bolt 14 and a spring washer 13, and a shaft seal 12 is arranged between the bearing seat 5 and the cavity end cover 6 to ensure that the rotating shaft 11 and the cavity 8 are sealed in a rotating manner when rotating; the two bearing blocks 5 are respectively provided with a bearing 4, the inner ring of each bearing 4 is fixedly connected with a rotating shaft 11, and the rotating shaft 11 is in running fit with the shell through the bearing 4. An O-shaped sealing ring 7 is arranged between the cavity 8 and each cavity end cover 6 to ensure sealing.

Be provided with low-pressure area, vortex diffusion zone and high-pressure area in the cavity 8, this embodiment hinders and seals the liquid circulating pump and pass through the vortex pressure boost principle, adopts vortex cavity 8 and impeller 10 to produce relative rotation, hinders and seals liquid and gets into cavity 8 from the low-pressure area, under impeller 10 drives, through the vortex diffusion zone pressurization back, discharges from the high-pressure area, under the pressure differential effect, through pipe connection, accomplishes the circulation transport who hinders and seals liquid, reaches pumping function.

In the description of the present invention, it should be noted that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.