CN215719748U

CN215719748U - Short axial distance bearing seat for centrifugal pump

Info

Publication number: CN215719748U
Application number: CN202121343520.4U
Authority: CN
Inventors: 唐春仁; 袁霄; 陈金平; 吴尉; 郭娜; 仲林俊
Original assignee: Jiangsu Zhenhua Haike Equipment Technology Co ltd
Current assignee: Jiangsu Zhenhua Haike Equipment Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-02-01
Anticipated expiration: 2031-06-16

Abstract

The utility model belongs to the field of centrifugal pumps, and particularly relates to a short axial distance bearing seat for a centrifugal pump, which comprises a bearing seat, wherein a bearing seat cavity is arranged in the bearing seat, the middle part of the bearing seat is movably connected with a pump shaft, an oil groove is arranged at the position, opposite to the bearing seat cavity, of the pump shaft, a bearing is arranged on the right side of the bearing seat cavity, the bearing is sleeved on the annular side of the pump shaft, and a bearing seat oil cavity is arranged below the inside of the bearing seat. The lubricating oil cavity is not required to be enlarged by increasing the axial distance of the bearing seat, in the process of rotating the pump shaft, the set oil groove drives the lubricating oil to flow, so that sufficient lubricating oil can be effectively stored, the temperature of the bearing is in a specified range, the set heat dissipation ribs are matched with the flowing lubricating oil, the cooling effect is good, the axial length can be effectively reduced, the pump is suitable for various environments, and the practicability is high.

Description

Short axial distance bearing seat for centrifugal pump

Technical Field

The utility model relates to the field of centrifugal pumps, in particular to a short axial distance bearing seat for a centrifugal pump.

Background

The centrifugal pump is a pump for conveying liquid by the centrifugal force generated when the impeller rotates, and can be widely used for conveying slurry containing solid particles in industries such as electric power, metallurgy, coal, building materials and the like. Such as hydraulic ash removal in thermal power plants, ore pulp transportation in metallurgical dressing plants, coal slurry and dense medium transportation in coal washing plants, and the like.

Because the bearing can produce heat in the operation process, so when designing the bearing seat cavity, the lubrication of the bearing and the heat dissipation of the bearing need to be considered, the lubricating oil cavity is enlarged by increasing the axial distance of the bearing seat in the conventional bearing seat design, and the two sides of the cavity are respectively provided with the bearing, so that the bearing capacity can be ensured, enough lubricating oil can be stored, and the temperature of the bearing is in a specified range. The requirement of the current application end on the installation size of the centrifugal pump is gradually strict, and the axial length of the whole pump set is increased due to the design, so that the requirement of a client is difficult to meet.

To this end, we propose a centrifugal pump with a short axial distance bearing block to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the axial length of a centrifugal pump set is increased and the requirements of customers are difficult to meet in the prior art, and provides a short axial distance bearing seat for a centrifugal pump.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a bearing seat with short axial distance for a centrifugal pump comprises a bearing seat arranged on a pump body, a bearing seat cavity is arranged inside the bearing seat, a pump shaft is movably connected to the middle of the bearing seat, the size of the bearing seat cavity is larger than that of the pump shaft, an oil groove is arranged at the position, facing the bearing seat cavity, of the pump shaft, the oil groove rotates along with the rotation of the pump shaft, a bearing is arranged on the right side of the bearing seat cavity, a bearing sleeve is arranged on the annular side of the pump shaft, oil can be driven to each part of the bearing along with the rotation of the oil groove, heat can be generated and transmitted to lubricating oil, a bearing seat oil cavity filled with the lubricating oil is arranged below the inside of the bearing seat, the bearing seat oil cavity is communicated with the inside of the bearing seat cavity and is arranged below the bearing seat cavity, the transmission of the oil is facilitated, the cross section of the bearing seat oil cavity is U-shaped, the internal lubricating oil can be automatically adjusted by the internal lubricating oil under the principle of a communicating device, the lower extreme fixedly connected with of bearing frame oil pocket is used for carrying out the bearing frame apron that seals to the bearing frame, and the right side threaded connection of bearing frame apron has the bearing frame apron sealing washer that is used for sealing, and the left and right sides of bearing frame just is connected with a plurality of equidistance distribution's bearing frame heat dissipation muscle to the position of bearing frame oil pocket, can improve the radiating effect through bearing frame heat dissipation muscle.

The quantity of oil groove is a plurality of, and the oil groove is annular equidistance and distributes, and the cross-section of oil groove is crescent, and the oil groove rotates along with the rotation of pump shaft, can drive lubricating oil and rotate thereupon when the pump shaft rotates through the oil groove of crescent.

The position swing joint that the ring side of pump shaft is close to the bearing frame cavity has the skeleton oil blanket that plays the sealed effect, avoids the lubricating oil seepage, and the position that the upper end of bearing frame is close to the bearing frame cavity top is equipped with the plug screw, is convenient for change lubricating oil through the plug screw.

The right side of bearing is equipped with the bearing retainer ring, and the ring side of pump shaft is located to the bearing retainer ring cover, sets up the inside lubricating oil seepage of bearing that can avoid the bearing retainer ring.

The right end of the bearing seat is fixedly connected with a bearing cover which plays a role in sealing, and the right end of the pump shaft penetrates through the bearing cover to be movably connected with the bearing cover, so that the pump shaft can be conveniently connected with other components.

The left side of bearing frame has seted up screw-in oil window, and screw-in oil window communicates with each other with bearing frame oil pocket inside, can the user observe the in service behavior of lubricating oil through setting up screw-in oil window.

Compared with the prior art, the utility model has the following advantages:

1. the lubricating oil chamber is not required to be enlarged by increasing the axial distance of the bearing seat, and in the process of rotating the pump shaft, the lubricating oil is driven to flow by the arranged oil groove, so that sufficient lubricating oil can be effectively stored, and the temperature of the bearing is in a specified range;

2. the cooling ribs are matched with flowing lubricating oil, so that the cooling effect is good, the axial length can be effectively reduced, the cooling device is suitable for various environments, and the practicability is high;

3. the utility model has simple structure, can drive the flow of the lubricating oil in the rotating process of the pump shaft, can observe the height of the lubricating oil through the arranged oil window, and is convenient and quick.

Drawings

FIG. 1 is a schematic structural view of a bearing seat with short axial spacing for a centrifugal pump according to the present invention;

FIG. 2 is a schematic view of the internal structure of a bearing seat with short axial distance for a centrifugal pump according to the present invention;

FIG. 3 is a front view of a short axial spacing bearing block for a centrifugal pump according to the present invention;

fig. 4 is a schematic structural diagram of an oil groove of a bearing seat with short axial distance for a centrifugal pump.

In the figure: 001. a plug screw; 002. framework oil seal; 003. a bearing seat; 004. a bearing; 005. a bearing cap; 006. a bearing retainer ring; 007. a pump shaft; 008. a screw-in oil window; 009. a bearing seat cover plate sealing ring; 010. a bearing seat cover plate; 011. a bearing housing chamber; 012. a bearing housing oil cavity; 013. a bearing seat heat dissipation rib; 014. an oil groove.

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.

Referring to fig. 1-4, a bearing seat with short axial distance for a centrifugal pump comprises a bearing seat 003 mounted on a pump body, a bearing seat cavity 011 is formed in the bearing seat 003, a pump shaft 007 is movably connected to the middle of the bearing seat 003, the size of the bearing seat cavity 011 is larger than that of the pump shaft 007, an oil groove 014 is formed in the position, right opposite to the bearing seat cavity 011, of the pump shaft 007, the oil groove 014 rotates along with the rotation of the pump shaft 007, a bearing 004 is arranged on the right side of the bearing seat cavity 011, the bearing 004 is sleeved on the ring side of the pump shaft 007, oil can be driven to each part of the bearing 004 along with the rotation of the oil groove 014 and can generate heat simultaneously, the heat can be transferred to lubricating oil, a bearing seat oil cavity 012 filled with the lubricating oil is arranged below the bearing seat cavity 003, the oil cavity 012 is communicated with the inside of the bearing seat cavity 011 and is positioned below the bearing seat cavity 011, the oil cavity 012 is convenient for transmitting the oil, the section of the bearing seat 012 is in a U shape, under the linker principle, inside lubricating oil can the inside fluid of automatically regulated, and the lower extreme fixedly connected with of bearing frame oil pocket 012 is used for carrying out sealed bearing frame apron 010 to bearing frame 003, and the right side threaded connection of bearing frame apron 010 has a bearing frame apron sealing washer 009 that is used for sealing, and the left and right sides of bearing frame 003 is just to the bearing frame heat dissipation muscle 013 of a plurality of equidistance distributions of fixed position of bearing frame oil pocket 012, can improve the radiating effect through bearing frame heat dissipation muscle 013.

The quantity of oil groove 014 is a plurality of, and oil groove 014 is annular equidistance and distributes, and oil groove 014's cross-section is crescent, and oil groove 014 rotates along with the rotation of pump shaft 007, can drive lubricating oil and rotate thereupon when pump shaft 007 rotates through crescent oil groove 014.

The position swing joint that the ring side of pump shaft 007 is close to bearing frame cavity 011 has the skeleton oil blanket 002 that plays the sealing effect, avoids the lubricating oil seepage, and the position that the upper end of bearing frame 003 is close to bearing frame cavity 011 top is equipped with plug screw 001, is convenient for change lubricating oil through plug screw 001.

Bearing 004's right side is equipped with bearing retainer ring 006, and the ring side of pump shaft 007 is located to bearing retainer ring 006 cover, sets up the inside lubricating oil seepage of bearing 004 can be avoided to bearing retainer ring 006.

The right end fixedly connected with of bearing frame 003 has the bearing cap 005 of sealed effect, and the right-hand member of pump shaft 007 passes bearing cap 005 and bearing cap 005 swing joint, and the other parts are connected to the pump shaft 007 of being convenient for.

Screw-in oil window 008 has been seted up on the left side of bearing frame 003, and screw-in oil window 008 communicates with each other with bearing frame oil pocket 012 is inside, can convenient to use person observes the in service behavior of lubricating oil through setting up screw-in oil window 008.

The working principle is as follows:

the bearing 004 rotor is driven to rotate by the rotation of the pump shaft 007, in the rotation process of the rotor, the oil groove 014 drives part of oil to rotate along with the rotation of the pump shaft 007, the oil can be driven to all parts of the bearing 004 and can generate heat at the same time, the heat can be transferred to lubricating oil, the oil in the bearing seat cavity 011 generates little heat quickly, because the bearing seat cavity 011 is communicated with the interior of the bearing seat oil cavity 012 at the lower part of the bearing seat cavity, the temperature in the bearing seat cavity 011 can be quickly transferred into the bearing seat oil cavity 012, the oil in the bearing seat oil cavity 012 is far more than the oil in the bearing seat cavity 011, the temperature rise of the oil in the bearing seat cavity 011 can be delayed, the bearing seat 003 generates heat and can emit heat through a row of heat dissipation ribs at both sides of the bearing seat 003, in the rotation process of the pump shaft 013, the oil can be sealed by the framework oil seal 002, the bearing retainer ring 006 and the bearing seat cover plate seal ring 009, the leakage of oil is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The bearing seat with the short axial distance for the centrifugal pump comprises a bearing seat (003) and is characterized in that a bearing seat cavity (011) is formed in the bearing seat (003), a pump shaft (007) is movably connected to the middle of the bearing seat (003), an oil groove (014) is formed in the position, right opposite to the bearing seat cavity (011), of the bearing seat cavity (011), a bearing (004) is arranged on the right side of the bearing seat cavity (011), the bearing (004) is sleeved on the annular side of the pump shaft (007), a bearing seat oil cavity (012) is formed below the inside of the bearing seat (003), the bearing seat oil cavity (012) is communicated with the inside of the bearing seat cavity (011) and is positioned below the bearing seat cavity (011), the section of the bearing seat oil cavity (012) is U-shaped, a bearing seat cover plate (010) is fixedly connected to the lower end of the bearing seat oil cavity (012), and a bearing seat cover plate sealing ring (009) is connected to the right side of the bearing seat cover plate (010) through threads, the left side and the right side of the bearing seat (003) are opposite to the bearing seat oil cavity (012), and a plurality of bearing seat heat dissipation ribs (013) which are distributed at equal intervals are fixedly connected at the positions of the bearing seat oil cavity.

2. A short axial distance bearing housing for a centrifugal pump according to claim 1, characterized in that the number of said oil grooves (014) is several, said oil grooves (014) are distributed equally in the shape of a ring, the cross section of said oil grooves (014) is crescent shaped.

3. The short axial distance bearing seat for the centrifugal pump according to claim 1, wherein a skeleton oil seal (002) is movably connected to a position, close to a bearing seat cavity (011), of the ring side of the pump shaft (007), and a screw plug (001) is arranged at a position, close to the top of the bearing seat cavity (011), of the upper end of the bearing seat (003).

4. The bearing seat with the short axial distance for the centrifugal pump according to claim 1, wherein a bearing retainer ring (006) is arranged on the right side of the bearing (004), and the bearing retainer ring (006) is sleeved on the ring side of a pump shaft (007).

5. A bearing block with short axial distance for a centrifugal pump according to claim 4, characterized in that a bearing cover (005) is fixedly connected to the right end of the bearing block (003), and the right end of the pump shaft (007) passes through the bearing cover (005) to be movably connected with the bearing cover (005).

6. The bearing seat with the short axial distance for the centrifugal pump as claimed in claim 1, wherein a screw-in oil window (008) is formed in the left side of the bearing seat (003), and the screw-in oil window (008) is communicated with the inside of a bearing seat oil chamber (012).