CN214945042U

CN214945042U - Double-suction multistage middle-open centrifugal pump

Info

Publication number: CN214945042U
Application number: CN202121032614.XU
Authority: CN
Inventors: 杨林鹏; 裴凡; 夏军强; 吴利平
Original assignee: Zhengzhou Zhongli Pump & Valve Manufacturing Co ltd
Current assignee: Zhengzhou Zhongli Pump & Valve Manufacturing Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-30
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a centrifugal pump is opened in double suction multistage relates to pump valve field, including centrifugal pump, motor and bearing frame, bearing frame fixed mounting is in one side of centrifugal pump, the motor is established in one side that the centrifugal pump was kept away from to the bearing frame, and the coaxial arrangement of three, the inside of centrifugal pump is rotated and is installed centrifugal pivot, the tip of centrifugal pivot and the interior axle one side fixed connection of bearing frame, the output of motor and the interior opposite side fixed connection of axle in the bearing frame, one side fixedly connected with of inlet pipe rather than the filter tube of inner chamber UNICOM, the inside of filter tube is pegged graft and is had the cartridge filter. The utility model discloses a set up the cartridge filter on the inlet pipe, liquid gets into the centrifugal pump after the filtration of cartridge filter, and the effectual impurity that has prevented probably to exist in the liquid contacts with sealing mechanism, causes wearing and tearing to sealing mechanism, has promoted centrifugal pump sealing mechanism's life.

Description

Double-suction multistage middle-open centrifugal pump

Technical Field

The utility model relates to a pump valve field, in particular to double suction multi-stage middle open centrifugal pump.

Background

The pump is a machine for conveying fluid or pressurizing fluid, which transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, mainly used for conveying liquid such as water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, the existing double-suction multistage middle-open centrifugal pump has more and more large demand for large-flow and high-lift pumps, inherits the characteristics of good cavitation performance and convenient maintenance of double-suction pumps, and has the characteristic of high lift of multistage centrifugal pumps at the same time, when the double-suction multistage split centrifugal pump is used, impurities may exist in liquid, and the impurities are contacted with the sealing mechanism under the high-speed rotation of the centrifugal pump, abrasion is caused to the sealing mechanism, the service life of the sealing mechanism is influenced, the centrifugal pump is connected with the motor through the bearing, in the process of high-speed rotation, the temperature of the bearing is easy to rise, the bearing is easy to burn out, and unnecessary loss is caused.

Therefore, it is necessary to develop a double-suction multistage centrifugal pump to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal pump is opened in double suction multistage to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-suction multistage middle-open centrifugal pump comprises a centrifugal pump, a motor and a bearing seat, wherein the bearing seat is fixedly arranged on one side of the centrifugal pump, the motor is arranged on one side of the bearing seat far away from the centrifugal pump, the motor, the centrifugal shaft and the bearing seat are coaxially arranged, a centrifugal rotating shaft is rotatably arranged in the centrifugal pump, the end part of the centrifugal rotating shaft is fixedly connected with one side of an inner shaft of the bearing seat, the output end of the motor is fixedly connected with the other side of the inner shaft of the bearing seat, a feed pipe and a discharge pipe are arranged on the centrifugal pump, one side of the feed pipe is fixedly connected with a filter pipe communicated with the inner chamber of the feed pipe, a filter cartridge is inserted in the filter pipe, one end of the filter cartridge close to the inner chamber of the feed pipe is connected with the inner chamber of the feed pipe in a fitting manner, an opening is formed above the inner chamber part of the feed pipe, the bearing seat sequentially comprises an annular shell, a cooling water pipe and a rotating bearing from outside to inside, the outer side of the rotating bearing is attached to the inner side uniform cooling water pipe of the annular shell, and the annular shell is fixedly installed on the rotating bearing.

Optionally, the centrifugal pump further comprises a base, and the centrifugal pump and the motor are both fixedly mounted on the base.

Optionally, the one end that the inlet pipe was kept away from to the cartridge filter is equipped with the ring flange, the cartridge filter passes through ring flange and filter tube flange joint.

Optionally, a limiting groove is formed in the inner side of the filter tube, and a limiting strip which is correspondingly inserted into the limiting groove is fixedly installed on the outer side of the filter cartridge;

when the filter cartridge is plugged, the filter cartridge is plugged in the filter pipe through the guide of the limiting strip, so that the filter cartridge is effectively prevented from being arranged downwards on one side with an opening, and the use is convenient and quick.

Optionally, a water inlet and a water outlet are formed in the cooling water pipe, and both the water inlet and the water outlet penetrate through the annular shell.

Optionally, mechanical seals are fixedly mounted at two ends of the centrifugal rotating shaft of the centrifugal pump, and the bearing seat is fixedly mounted on one side, far away from the centrifugal pump, of the mechanical seal.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a set up the cartridge filter on the inlet pipe, liquid gets into the centrifugal pump after the filtration of cartridge filter, the effectual impurity that probably exists in the liquid that has prevented contacts with sealing mechanism, and high-speed rotation down causes wearing and tearing to sealing mechanism, has promoted centrifugal pump sealing mechanism's life.

2. The utility model discloses a set up condenser tube in the inside of bearing frame, let in the cooling water to the condenser tube, subduct the heat that high-speed pivoted rolling bearing produced, the effectual loss that reduces under the rolling bearing high temperature.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is the schematic view of the sectional structure of the bearing seat of the present invention.

Fig. 3 is a schematic view of the sectional structure of the filter cartridge according to the present invention.

In the figure: 1. a centrifugal pump; 2. a motor; 3. a base; 4. a bearing seat; 41. a rotating bearing; 42. an annular housing; 43. a cooling water pipe; 44. a water inlet; 45. a water outlet; 5. mechanical sealing; 6. a feed pipe; 7. a discharge pipe; 8. a filter tube; 9. a filter cartridge; 10. a limiting groove; 11. and (5) a limiting strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a double-suction multistage middle-open centrifugal pump as shown in figures 1-3, which comprises a centrifugal pump 1, a motor 2 and a bearing seat 4, wherein the bearing seat 4 is fixedly arranged at one side of the centrifugal pump 1, the motor 2 is arranged at one side of the bearing seat 4 far away from the centrifugal pump 1, and the three are coaxially arranged, a centrifugal rotating shaft is rotatably arranged inside the centrifugal pump 1, the end part of the centrifugal rotating shaft is fixedly connected with one side of an inner shaft of the bearing seat 4, the output end of the motor 2 is fixedly connected with the other side of the inner shaft of the bearing seat 4, the output end of the motor 2 drives the inner shaft of the bearing seat 4 to rotate, the inner shaft of the bearing seat 4 drives the centrifugal rotating shaft in the centrifugal pump 1 to rotate for working, the centrifugal pump 1 is provided with a feed pipe 6 and a discharge pipe 7, matched liquid inlet and outlet pipelines are respectively connected with the feed pipe 6 and the discharge pipe 7 by flanges, liquid is sucked into the centrifugal pump 1 through the feed pipe 6, the centrifugal pump is driven by a centrifugal rotating shaft in the centrifugal pump 1 to be discharged from a discharge pipe 7, one side of a feed pipe 6 is fixedly connected with a filter pipe 8 communicated with an inner cavity of the feed pipe 6, a filter cartridge 9 is inserted into the filter pipe 8, one end of the filter cartridge 9 close to the inner cavity of the feed pipe 6 is connected with the inner cavity of the feed pipe 6 in a fitting manner, an opening is formed in the upper part of the inner cavity part of the feed pipe 6 of the filter cartridge 9, when liquid enters the centrifugal pump 1 through the feed pipe 6, the liquid needs to pass through the filter cartridge 9, impurities in the liquid are filtered above the filter cartridge 9, clean liquid enters the centrifugal pump 1, the impurities possibly existing in the liquid are effectively prevented from entering a sealing mechanism and a bearing seat 4 to cause abrasion to the sealing mechanism or the bearing seat 4, the bearing seat 4 sequentially comprises an annular shell 42, a cooling water pipe 43 and a rotating bearing 41 from outside to inside, the outer side of the rotating bearing 41 is connected with the uniform cooling water pipe 43 on the inner side of the annular shell 42 in a fitting manner, the annular housing 42 is fixedly mounted on the rotary bearing 41, and cooling water is introduced into the cooling water pipe 43 to reduce heat generated by the rotary bearing 41 rotating at a high speed, so that loss of the rotary bearing 41 at a high temperature is effectively reduced.

Still include base 3, centrifugal pump 1 and the equal fixed mounting of motor 2 are on base 3, and the integral type structure, it is comparatively convenient to transport the installation.

The one end that inlet pipe 6 was kept away from to cartridge filter 9 is equipped with the ring flange, and cartridge filter 9 passes through ring flange and 8 flange joint of filter tube, prevents dropping of cartridge filter 9.

Limiting groove 10 has been seted up to the inboard of filter tube 8, and the outside fixed mounting of cartridge filter 9 has the spacing 11 of pegging graft with limiting groove 10 correspondence, and the direction through spacing 11 is pegged graft in the inside of filter tube 8 when cartridge filter 9 is pegged graft, has effectually prevented that cartridge filter 9 from having open-ended one side and has set up down, and convenient to use is swift.

Seted up water inlet 44 and delivery port 45 on the cooling water pipe 43, water inlet 44 and delivery port 45 all run through annular casing 42, and the cooling water cools down swivel bearing 41 in getting into cooling water pipe 43 through water inlet 44, and the water of absorption high temperature is discharged through delivery port 45, constantly lets in the cooling water in to cooling water pipe 43, and is sustainable to it cools down.

Both ends of the centrifugal rotating shaft of the centrifugal pump 1 are fixedly provided with mechanical seals 5, and the bearing seat 4 is fixedly arranged on one side of the mechanical seal 5 far away from the centrifugal pump 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a centrifugal pump is opened in double suction multistage, includes centrifugal pump (1), motor (2) and bearing frame (4), bearing frame (4) fixed mounting is in one side of centrifugal pump (1), establish in one side that centrifugal pump (1) was kept away from in bearing frame (4) motor (2), and the coaxial arrangement of three, the internal rotation of centrifugal pump (1) installs centrifugal pivot, the tip of centrifugal pivot and the interior axle one side fixed connection of bearing frame (4), the output of motor (2) and the opposite side fixed connection of axle in bearing frame (4), be equipped with inlet pipe (6) and discharging pipe (7) on centrifugal pump (1), its characterized in that: one side fixedly connected with of inlet pipe (6) has filter tube (8) rather than the inner chamber UNICOM, the inside of filter tube (8) is pegged graft and is had cartridge filter (9), cartridge filter (9) are close to the one end of inlet pipe (6) inner chamber and are connected with the inner chamber laminating of inlet pipe (6), the opening has been seted up to cartridge filter (9) in the top of inlet pipe (6) inner chamber part, bearing frame (4) are by outer to interior annular casing (42), cooling water pipe (43) and rolling bearing (41) of including in proper order, the outside of rolling bearing (41) is connected with the inboard even cooling water pipe (43) laminating of annular casing (42), annular casing (42) fixed mounting is on rolling bearing (41).

2. The double suction multistage centrifugal pump as claimed in claim 1, wherein: the centrifugal pump is characterized by further comprising a base (3), wherein the centrifugal pump (1) and the motor (2) are fixedly mounted on the base (3).

3. The double suction multistage centrifugal pump as claimed in claim 1, wherein: the one end that inlet pipe (6) were kept away from in cartridge filter (9) is equipped with the ring flange, cartridge filter (9) pass through ring flange and filter tube (8) flange joint.

4. The double suction multistage centrifugal pump as claimed in claim 1, wherein: the limiting groove (10) is formed in the inner side of the filter pipe (8), and a limiting strip (11) which is correspondingly inserted into the limiting groove (10) is fixedly mounted on the outer side of the filter cylinder (9).

5. The double suction multistage centrifugal pump as claimed in claim 1, wherein: a water inlet (44) and a water outlet (45) are formed in the cooling water pipe (43), and the water inlet (44) and the water outlet (45) penetrate through the annular shell (42).

6. The double suction multistage centrifugal pump as claimed in claim 1, wherein: mechanical seals (5) are fixedly mounted at two ends of a centrifugal rotating shaft of the centrifugal pump (1), and the bearing seat (4) is fixedly mounted on one side, far away from the centrifugal pump (1), of the mechanical seals (5).