CN202091235U

CN202091235U - Conveniently-disassembled sliding-sleeve four-bearing chemical pump

Info

Publication number: CN202091235U
Application number: CN201120034837XU
Authority: CN
Inventors: 于水; 张秉权
Original assignee: SHENYANG GUOTELONG MANUFACTURING Co Ltd
Current assignee: SHENYANG GUOTELONG MANUFACTURING Co Ltd
Priority date: 2011-02-09
Filing date: 2011-02-09
Publication date: 2011-12-28
Anticipated expiration: 2021-02-09

Abstract

The utility model provides a conveniently-disassembled sliding-sleeve four-bearing chemical pump which has the main technical characteristics that the front end of a rotation part is connected with a motor by a coupler; the front end and the rear end of the rotation part are respectively embedded with a radial rolling bearing, a radial bearing sliding sleeve and a water cooling support bearing body; tail end of the rotation part is embedded with a thrust bearing box; and a thrust rolling bearing and a thrust bearing sliding sleeve are installed in the bearing box in pair. The conveniently-disassembled sliding-sleeve four-bearing chemical pump has the advantages that one group of radial bearings is added, so that the thrust bearing becomes an independent thrust bearing; and the bearings can be disassembled and assembled in a scatheless mode without special tools, so that maintenance time is shortened, and service life is prolonged.

Description

Detachable type sliding sleeve four bearing chemical pumps

Technical field

The utility model relates to a kind of two end supports formula chemical flow-process pump of chemical centrifugal pump, particularly a kind of detachable type sliding sleeve four bearing chemical pumps.

Background technique

Traditional " two end supports formula chemical flow-process pump ", the supporting way of pump rotatable parts is: drive end is installed one group of annular bearing with rolling contact parts, and anti-drive end is installed the angular contact ball bearing parts of a pair of paired mounting.There are four shortcomings in its support technology:

1. only provide cooling water to play heat-blocking action, cause the cooling of high temperature pump bearing insufficient bearing gland;

2. carriage and bearing support split, half linkage structure, parts attach together the not high and insufficient rigidity of precision; After further reducing, process repeated disassembled and assembled precision easily causes the pump vibration;

3. thrust bearing (angular contact ball bearing) produces additional radial pressure because of bearing axial force again when bearing the radial force identical with radial bearing, so the temperature rise of thrust bearing one side is far above the shaft coupling side bearing;

4. for reducing number of spare parts, brearing bore directly cooperates with axle, when dismounting, cooperates seam too much, dismounting inconvenience.Especially thrust bearing does not break down when often operation taking place, but the ruined phenomenon of precision when opening and inspecting.

The applicant also once improved at foregoing problems: water-cooling jacket is increased to surrounds whole oil pockets, improve cooling effect; In addition carriage is changed into the tubular Connecting format, strengthen the whole rigidity that connects.Improvement relates to bearing support, front and back bearings gland and four parts of carriage, can directly exchange with traditional product.

Though this improvement has promoted cooling and effectiveness in vibration suppression, fundamentally do not solve the low problem of thrust temperature rise, life-span that thrust bearing load causes greater than radial bearing.

Summary of the invention

The purpose of this utility model is the deficiency that exists in the above-mentioned technology, a kind of detachable type sliding sleeve four bearing chemical pumps are provided, increase by one group of radial bearing, make thrust bearing become independent thrust bearing, whole three groups of four rolling bearings are all established sliding sleeve, under the prerequisite that guarantees assembly precision, do not need special tool just can realize the dismounting of bearing not damaged.

The purpose of this utility model is achieved in that and comprises the pump housing, the sliding sleeve bearing, radial bearing, thrust bearing, it is characterized in that, front end at the pump housing is equipped with drive end sliding sleeve bearing part, side has a pump cover above the pump housing, anti-drive end sliding sleeve bearing part is installed in the rear end of the pump housing, the central bore of drive end sliding sleeve bearing part and anti-drive end sliding sleeve bearing part is with rotatable parts, the front end of rotatable parts links to each other with motor by coupling, each setting-in annular bearing with rolling contact of the rear and front end of rotatable parts, radial bearing sliding sleeve and water-cooled pedestal bearing body, at the terminal setting-in of rotatable parts the thrust bearing box, paired mounting thrust rolling bearing and thrust bearing sliding sleeve in bearing box.

The utility model has the advantages that, 1, increase by one group of radial bearing, make thrust bearing become independent thrust bearing.With the large-size chemical pump is example, when the weight of rotatable parts is about 400kg, in original technology, when the thrust bearing parts bear the 200kg radial force, also want bear rotor axial force and the moving power of disturbing, axial force be because of bearing contact angle can produce additional radial pressure to bearing, makes thrust bearing bear load greater than radial bearing, therefore the temperature rise of thrust bearing is higher than radial bearing, and the life-span is lower than radial bearing.After the technological improvement, one group of radial bearing of increase is independently born radial load, and thrust bearing is independently born axial force and moving disturbed power, and support load reaches the optimum state.Use the thrust bearing temperature rise ratio traditional product of checking low more than 15 ℃.

2. whole three groups of four rolling bearings are all established sliding sleeve, under the prerequisite that guarantees assembly precision, do not need special tool just can realize the dismounting of bearing not damaged.

3. Xin Zeng radial bearing has increased purchase cost, but thrust bearing is improved to the separate bearings formula, and bearing specification can reduce the fourth gear diameter of axle, and purchase cost significantly reduces.Especially key equipment is specified when selecting imported bearing for use, can save foreign exchange.

4. the maintainalbility of detachable type sliding sleeve bearing is much better than conventional art, and unit light maintenance time and overhaul time all can shorten more than one hour, have reduced the maintenance cost of chemical industry.

5. the bearing reliability of bringing along with new technique, the raising in life-span, with and just tear just maintainability open, saved a large amount of imported bearings for applying unit, obtained good economic benefit and social benefit.

Description of drawings:

Fig. 1 is a structural drawing of the present utility model

Fig. 2 is the left side view of Fig. 1

Fig. 3 is the right side view of Fig. 1

Embodiment;

Below in conjunction with accompanying drawing present embodiment is described further:

By Fig. 1 to Fig. 3 as can be known, front end at the pump housing 4 is equipped with drive end sliding sleeve bearing part 2, side has a pump cover 3 above the pump housing 4, anti-drive end sliding sleeve bearing part 5 is installed in the rear end of the pump housing, the central bore of drive end sliding sleeve bearing part 2 and anti-drive end sliding sleeve bearing part 5 is with rotatable parts 1, the front end of rotatable parts links to each other with motor by coupling, each setting-in annular bearing with rolling contact 2-2 of the rear and front end of rotatable parts, radial bearing sliding sleeve 2-3 and water-cooled pedestal bearing body 2-1, at the terminal setting-in of rotatable parts 1 thrust bearing box 5-1, paired mounting thrust rolling bearing 5-2 and thrust bearing sliding sleeve 5-3 in bearing box.

Claims

1. detachable type sliding sleeve four bearing chemical pumps, comprise the pump housing, the sliding sleeve bearing, radial bearing, thrust bearing, it is characterized in that, front end at the pump housing is equipped with drive end sliding sleeve bearing part, side has a pump cover above the pump housing, anti-drive end sliding sleeve bearing part is installed in the rear end of the pump housing, the central bore of drive end sliding sleeve bearing part and anti-drive end sliding sleeve bearing part is with rotatable parts, the front end of rotatable parts links to each other with motor by coupling, each setting-in annular bearing with rolling contact of the rear and front end of rotatable parts, radial bearing sliding sleeve and water-cooled pedestal bearing body, at the terminal setting-in of rotatable parts the thrust bearing box, paired mounting thrust rolling bearing and thrust bearing sliding sleeve in bearing box.