CN213270262U

CN213270262U - Bracket structure of single-screw pump

Info

Publication number: CN213270262U
Application number: CN202022191130.1U
Authority: CN
Inventors: 付勇
Original assignee: Chongqing Jiangguan Pump Co ltd
Current assignee: Chongqing Jiangguan Pump Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-25
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a single-screw pump bracket structure, its characterized in that: including the bracket body, the bracket body is the box structure, bracket body inside has to the convex bearing location portion in inboard, bearing location portion has the step hole of horizontal direction, the downthehole right side to left side of step is the next-door neighbour in proper order and is provided with radial ball bearing, spacer, thrust bearing, hole bearing retainer ring, oil blanket, this internal level of going back of bracket is provided with the transmission shaft, the transmission shaft is the step shaft, the journal section of transmission shaft with radial ball bearing and thrust bearing cooperation are connected, the right-hand member of transmission shaft has the connecting hole along axle center axial setting. The beneficial effects of the utility model include: simple structure, axial length is short, and the bracket can bear very big axial thrust, is connected with the speed reducer by the shaft hole location moreover, fine assembly, and the transmission shaft operates steadily, improves mechanical seal and other accessories's life by a wide margin.

Description

Bracket structure of single-screw pump

Technical Field

The utility model relates to a single-screw pump field, concretely relates to single-screw pump bracket structure.

Background

The single screw pump belongs to a rotor type displacement pump, and is characterized by that the screw and lining are mutually meshed to produce volume change in suction cavity and discharge cavity to transfer liquid. The single screw pump is usually connected to a reducer via a bracket. Because the single-screw pump can produce axial pulsation and produce axial thrust, traditional bracket can not bear axial thrust to make the speed reducer receive too big axial thrust and damage. The traditional bracket does not support the transmission shaft, the whole pump needs to be disassembled in the process of replacing the speed reducer and maintaining, and the workload is large. In the prior art, the problem of axial thrust is solved by adopting a bearing seat to bear the axial thrust, and although the design can solve the axial thrust of the single-screw pump, the axial length of the whole single-screw pump is lengthened, the bearing seat and the speed reducer need to be connected through a coupler, the coaxiality of the speed reducer and the bearing seat needs to be adjusted, and the requirement on the skill of field maintenance workers is high. The use of a whole pump having an axial length that is too long is limited for field reasons at many production sites.

Disclosure of Invention

To the weak point among the above-mentioned prior art, the utility model provides a single-screw pump bracket structure, its simple structure can satisfy and bear axial thrust, can increase substantially simple single-screw pump's whole axial length again.

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

the utility model provides a single-screw pump bracket structure which characterized in that: including the bracket body, the bracket body is the box structure, bracket body inside has to the convex bearing location portion in inboard, bearing location portion has the step hole of horizontal direction, the downthehole right side to left side of step is the next-door neighbour in proper order and is provided with radial ball bearing, spacer, thrust bearing, for hole retaining ring, oil blanket, this internal level of going back of bracket is provided with the transmission shaft, the transmission shaft is the step shaft, the journal section of transmission shaft with radial ball bearing and thrust bearing cooperation are connected, the shaft shoulder of transmission shaft with the contact of thrust bearing inner race, be equipped with spacingly on the journal section of transmission shaft radial ball bearing's for the axle retaining ring, the right-hand member of transmission shaft has the connecting hole that sets up along the axle center axial.

Furthermore, the left end of the transmission shaft extends out of the bracket body, and the right end of the transmission shaft is located in the bracket body.

The beneficial effects of the utility model include: the structure is simple, the axial length is short, the bracket can bear large axial thrust, and the connection with the speed reducer is positioned by the shaft hole, so that the assembly is good, the installation can be carried out by common workers without the skill of maintenance workers; because the transmission shaft on the bracket is positioned in the axial direction and the radial direction, the transmission shaft runs stably, and the service life of mechanical seal and other accessories is greatly prolonged.

Drawings

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

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

A bracket structure of a single screw pump as shown in figure 1 comprises a bracket body 1, wherein the bracket body 1 is of a box structure, and a bearing positioning part 2 protruding inwards is arranged in the bracket body 1, so that the structure of the bracket body 1 can be shortened. The bearing positioning part 2 is provided with a step hole in the horizontal direction, and a radial ball bearing 3, a spacer 4, a thrust bearing 5, a hole bearing retainer ring 6 and an oil seal 7 are sequentially and closely arranged in the step hole from right to left. Still the level is provided with transmission shaft 8 in the bracket body 1, transmission shaft 8 is the step shaft, the journal section of transmission shaft 8 with radial ball bearing 3 and thrust bearing 5 cooperation are connected, the shaft shoulder of transmission shaft 8 with the contact of thrust bearing 5 inner circle, be equipped with spacing on the journal section of transmission shaft 8 radial ball bearing 3's axle is with retaining ring 9, radial ball bearing 3 is used for bearing radial load on the transmission shaft 8 and guarantees that transmission shaft 8 is radial not jumped, can also bear a small amount of axial impact force, and thrust bearing 5 can bear the axial thrust who comes from transmission shaft 8 to transmit axial thrust to bracket body 1 through spacer 4, thrust bearing 5's outer lane, thereby solved single screw pump's axial pulsation's problem. The right end of the transmission shaft 8 is provided with a connecting hole 10 which is axially arranged along the axis and is used for being connected with the speed reducer, the connecting hole 10 is connected with an output shaft of the speed reducer, the assembling difficulty is reduced through shaft hole positioning, the professional skill of a maintenance worker is not required to be high, and the assembly can be completed by a common technician.

In the embodiment shown in fig. 1, the left end of the transmission shaft 8 extends out of the bracket body 1 and is used for connecting a shaft rod of the single-screw pump, the right end of the transmission shaft is located in the bracket body 1, and the output end of the speed reducer can be tightly attached to the bracket body 1, so that the axial length of the single-screw pump is short after the single-screw pump is integrally assembled, and the requirement on an installation site is reduced.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a single-screw pump bracket structure which characterized in that: comprises a bracket body (1), the bracket body (1) is of a box structure, the inside of the bracket body (1) is provided with a bearing positioning part (2) protruding towards the inner side, the bearing positioning part (2) is provided with a step hole of the horizontal direction, the step hole is internally provided with a radial ball bearing (3), a spacer sleeve (4), a thrust bearing (5), a hole bearing retainer ring (6) and an oil seal (7) from right to left in sequence, a transmission shaft (8) is horizontally arranged in the bracket body (1), the transmission shaft (8) is a stepped shaft, the shaft neck section of the transmission shaft (8) is matched and connected with the radial ball bearing (3) and the thrust bearing (5), the shaft shoulder part of the transmission shaft (8) is contacted with the inner ring of the thrust bearing (5), and the shaft neck section of the transmission shaft (8) is provided with a shaft bearing retainer ring (9) for limiting the radial ball bearing, the right end of the transmission shaft (8) is provided with a connecting hole (10) which is axially arranged along the axis.

2. A progressive cavity pump bracket structure according to claim 1, wherein: the left end of the transmission shaft (8) extends out of the bracket body (1), and the right end is positioned in the bracket body (1).