CN214196649U

CN214196649U - Gear pump based on double-row ball bearing

Info

Publication number: CN214196649U
Application number: CN202120078238.1U
Authority: CN
Inventors: 周伟清; 孙成斌
Original assignee: Qingzhou Huayue Heavy Truck Hydraulic Machinery Co ltd
Current assignee: Qingzhou Huayue Heavy Truck Hydraulic Machinery Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-09-14
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses a gear pump based on double ball bearing, including the pump case, the front end of pump case can be dismantled and be connected with the protecgulum, the inside of pump case is equipped with the working chamber that is used for installing transmission assembly, transmission assembly includes driving shaft and the driven shaft of rotating the installation in the working chamber, be equipped with driving gear and driven gear of intermeshing on driving shaft and the driven shaft respectively, the front end of protecgulum is connected with the mount table integratively, close to its intermediate position on the mount table and rotate and install the drive shaft, be provided with seal assembly between drive shaft and the mount table, the utility model adopts the above technical scheme, thinks about ingeniously, the bearing adopts double ball bearing, compare single ball bearing, double ball bearing has better stability, the frictional force is littleer, the temperature that the friction produced can be lower, can effectively guarantee the stability of drive shaft, can also improve the life of bearing, the problem of excessive noise is effectively solved.

Description

Gear pump based on double-row ball bearing

Technical Field

The utility model belongs to the technical field of the gear pump, concretely relates to gear pump based on double ball bearing.

Background

It is known that a gear pump is a well-established and widely used pump type, which is a rotary pump that transfers or pressurizes liquid by means of the change and movement of the working volume formed between a pump cylinder and a meshed gear, and comprises two gears, a pump body and front and rear covers, when the gears rotate, the volume of the space on the gear disengagement side becomes larger and larger, vacuum is formed, and liquid is sucked in, the volume of the space on the gear meshing side becomes smaller and smaller, and liquid is squeezed into a pipeline, a suction cavity and a discharge cavity are separated by the meshing line of the two gears, and the pressure of the discharge port of the gear pump is completely determined by the magnitude of the resistance at the pump outlet.

Common gear pump has been very ripe on the market at present, but has the problem of sealed oil leak, and this problem can directly lead to the life of gear pump to reduce, and can make the noise of work too big moreover, and the uninterruptedly of drive shaft is rotatory can directly lead to the drive shaft position unstable moreover, takes place the deviation on the axis easily, influences the use of gear pump.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gear pump based on double ball bearing to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a gear pump based on double ball bearing, including the pump case, the front end of pump case can be dismantled and is connected with the protecgulum, the inside of pump case is equipped with the working chamber that is used for installing transmission assembly, transmission assembly is including rotating driving shaft and the driven shaft of installing in the working chamber, it is equipped with intermeshing's driving gear and driven gear to overlap respectively on driving shaft and the driven shaft, the front end an organic whole of protecgulum is connected with the mount table, be close to its intermediate position department on the mount table and rotate and install the drive shaft, be provided with seal assembly between drive shaft and the mount table.

The following is the utility model discloses to above-mentioned technical scheme's further optimization:

the inside of protecgulum just is located the position department of drive shaft outer lane and is provided with the preceding lubrication chamber that is used for annotating emollient, and preceding lubrication chamber is being provided with the chamber of being pressed at the one end that is close to the pump case coaxial.

Further optimization: and a bearing is sleeved on the driving shaft and at a position close to the mounting table.

Further optimization: the sealing assembly comprises a sealing ring fixedly installed on the installation table, the inner ring of the sealing ring is fixedly sleeved on the outer ring of the bearing, and a stop check ring is installed on one side, far away from the front lubricating cavity, of the sealing ring.

Further optimization: one end of the driving shaft close to the driving shaft extends to the inside of the front lubricating cavity for a distance along the axis direction, and the driving shaft is detachably connected with one end of the driving shaft close to the driving shaft.

Further optimization: an oil seal is fixedly arranged at the position where the pressed cavity is communicated with the working cavity, and the inner ring of the oil seal is sleeved on the driving shaft in a sliding manner.

The above technical scheme is adopted in the utility model, think about ingeniously, what the bearing adopted is double ball bearing, is provided with two rows of balls between the inner ring of this bearing and the outer loop, single ball bearing compares, and this double ball bearing has better stability, and double ball bearing is little than single ball bearing's rotational friction resistance, therefore under the same rotational speed, the temperature meeting of friction production is lower, can effectively guarantee the stability of drive shaft, can also improve the life of bearing.

The sealing assembly installed on the bearing and the installation platform can effectively prevent the lubricant in the front lubricating cavity from leaking, and the sealing assembly stops the matching between the stop ring and the sealing ring, so that the structure of the sealing assembly is firmer, and the oil leakage prevention effect is better.

The oil seal can prevent lubricant in the pressed cavity from entering the working cavity, and can also prevent water in the working cavity from entering the pressed cavity.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken along the line A-A of the present invention;

fig. 4 is a bottom view of the present invention.

In the figure: 1-pump cover; 2-front cover; 3-a drive shaft; 4-stop check ring; 5-sealing ring; 6-a bearing; 7-mounting a table; 8-oil sealing; 9-a positioning pin; 10-front lubrication chamber; 11-a pressed cavity; 12-a drive shaft; 13-a driven shaft; 14-a drive gear; 15-a driven gear; 16-a working chamber; 17-a water inlet; 18-water outlet.

Detailed Description

Example (b): as shown in fig. 1-4, a gear pump based on double-row ball bearing, including pump case 1, the front end of pump case 1 can be dismantled and be connected with protecgulum 2, the inside of pump case 1 is equipped with the working chamber 16 that is used for installing drive assembly, drive assembly is including rotating driving shaft 12 and the driven shaft 13 of installing in working chamber 16, it is equipped with driving gear 14 and driven gear 15 of intermeshing respectively to overlap on driving shaft 12 and the driven shaft 13, the front end body coupling of protecgulum 2 has mount table 7, it installs drive shaft 3 to rotate near its intermediate position department on the mount table 7, be provided with seal assembly between drive shaft 3 and the mount table 7.

The cross section of the working cavity 16 is 8-shaped, and the driving shaft 12 and the driven shaft 13 are respectively arranged in the corresponding working cavity 16.

The inside of protecgulum 2 is provided with the preceding lubricated chamber 10 that is used for annotating emollient, and the overall structure of preceding lubricated chamber 10 is cylindrically, and just preceding lubricated chamber 10 is the coaxial line setting with drive shaft 3.

And a pressed cavity 11 is coaxially arranged at one end of the front lubricating cavity 10 close to the pump cover 1.

The mounting table 7 is provided with a plurality of circular mounting holes 19, and the mounting holes 19 are used for fixedly mounting the gear pump on the driving mechanism.

One end of the drive shaft 3 extends through the mounting table 7 and into the front lubrication chamber 10 for a distance.

The other end of the driving shaft 3 is coaxially provided with a positioning pin 9.

And a bearing 6 is sleeved at a position on the driving shaft 3, which is close to the mounting table 7, and an inner ring of the bearing 6 is fixedly mounted on the driving shaft 3.

Design like this, bearing 6 adopts is double ball bearing, is provided with two rows of balls between this bearing 6's the inner ring and the outer loop, compares single ball bearing, and this double ball bearing has better stability, and double ball bearing is little than single ball bearing's rotational friction resistance, therefore under the same rotational speed, the temperature that the friction produced can be than lower, can effectively guarantee the stability of drive shaft 3, can also improve bearing 6's life.

The sealing assembly comprises a sealing ring 5 fixedly installed on a mounting table 7, and an inner ring of the sealing ring 5 is fixedly sleeved on an outer ring of a bearing 6.

The sealing ring 5 is provided with a stop check ring 4 at one side far away from the front lubricating cavity 10, the whole shape of the stop check ring 4 is annular, and the stop check ring 4 is tightly attached to the sealing ring 5.

By the design, the lubricating agent in the front lubricating cavity 10 can be effectively prevented from leaking by the sealing assembly arranged on the bearing 6 and the mounting table 7, and the structure of the sealing assembly is firmer and the oil leakage prevention effect is better due to the matching between the stop check ring 4 and the sealing ring 5 in the sealing assembly.

The transmission assembly comprises a driving shaft 12 rotatably mounted in the working cavity 16, and the driving shaft 12 and the driving shaft 3 are coaxially arranged.

One end of the driving shaft 12 close to the driving shaft 3 extends to the inside of the front lubricating cavity 10 for a distance along the axial direction.

The driving shaft 12 is detachably connected with one end of the driving shaft 3 close to the working cavity 16, and the connection part of the driving shaft 12 and the driving shaft 3 is arranged inside the front lubricating cavity 10.

An oil seal 8 is fixedly arranged at the junction position of the pressed cavity 11 and the working cavity 16, and the inner ring of the oil seal 8 is sleeved on the driving shaft 3 in a sliding manner.

By this design, the oil seal 8 can prevent the lubricant in the pressure chamber 11 from entering the working chamber 16, and can also prevent the water in the working chamber 16 from entering the pressure chamber 11.

And a driving gear 14 is coaxially and fixedly arranged on the driving shaft 12.

The number of teeth of the driving gear 14 is 9, and the module is 5.5.

The driven shaft 13 parallel to the driving shaft 12 is rotatably mounted in the working cavity 16.

The driven shaft 13 is fixedly sleeved with a driven gear 15 at a position corresponding to the driving gear 14, and the driven gear 15 is meshed with the driving gear 14.

The driven gear 15 has 9 teeth and a module of 5.5.

In operation, the rotation of the driving shaft 12 is driven by the rotation of the driving shaft 3, and the driving gear 14 on the driving shaft 12 is matched with the driven gear 15 on the driven shaft 13, so that power is transmitted to the driven shaft 13 to drive the rotation of the driven shaft 13.

One side of the pump cover 1, which is far away from the front cover 2, is provided with a water inlet 17 and a water outlet 18 for water inlet.

For those skilled in the art, based on the teachings of the present invention, changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. The utility model provides a gear pump based on double ball bearing, includes pump case (1), the front end of pump case (1) can be dismantled and be connected with protecgulum (2), the inside of pump case (1) is equipped with working chamber (16) that are used for installing drive assembly, drive assembly is including rotating driving shaft (12) and driven shaft (13) of installing in working chamber (16), it is equipped with driving gear (14) and driven gear (15) of intermeshing to overlap respectively on driving shaft (12) and driven shaft (13), its characterized in that: the front end of the front cover (2) is integrally connected with a mounting table (7), a driving shaft (3) is rotatably mounted on the mounting table (7) close to the middle of the mounting table, and a sealing assembly is arranged between the driving shaft (3) and the mounting table (7).

2. The gear pump based on the double row ball bearing as claimed in claim 1, wherein: a front lubricating cavity (10) for filling lubricant is arranged in the front cover (2) and at the position of the outer ring of the driving shaft (3), and a pressed cavity (11) is coaxially arranged at one end, close to the pump shell (1), of the front lubricating cavity (10).

3. The gear pump based on the double row ball bearing as claimed in claim 2, wherein: a bearing (6) is sleeved on the driving shaft (3) and at a position close to the mounting table (7).

4. The gear pump based on the double row ball bearing as claimed in claim 3, wherein: the sealing assembly comprises a sealing ring (5) fixedly installed on the installation table (7), an inner ring of the sealing ring (5) is fixedly sleeved on an outer ring of the bearing (6), and a stop check ring (4) is installed on one side, far away from the front lubricating cavity (10), of the sealing ring (5).

5. The gear pump based on the double row ball bearing as claimed in claim 4, wherein: one end of the driving shaft (12) close to the driving shaft (3) extends to a distance inside the front lubricating cavity (10) along the axis direction, and the driving shaft (12) is detachably connected with one end of the driving shaft (3) close to each other.

6. The gear pump based on the double row ball bearing as claimed in claim 5, wherein: an oil seal (8) is fixedly arranged at the position where the pressed cavity (11) is communicated with the working cavity (16), and the inner ring of the oil seal (8) is sleeved on the driving shaft (12) in a sliding manner.