CN209212788U - A kind of Self-aligning silicon carbide sliding bearing mechanism - Google Patents

Abstract

The utility model provides a kind of Self-aligning silicon carbide sliding bearing mechanism, it includes pump shaft, axle sleeve is set on pump shaft, sliding bearing is set on axle sleeve, fixing sleeve is equipped with first sleeve on sliding bearing, the surface of first sleeve has the flange collar of the circumferentially extending along first sleeve, is set with the second casing in first sleeve, is contacted between the inner wall and flange collar of the second casing by cambered surface.The utility model can efficiently solve the problems, such as previous magnetic drive pump, canned motor pump sliding bearing beat compared to the prior art；Especially long bearing span, the multistage pump of heavy load, submerged pump sliding bearing damage problem.

Description

A kind of Self-aligning silicon carbide sliding bearing mechanism

Technical field

The utility model relates to a kind of silicon carbide sliding bearing mechanisms, sliding in particular to a kind of Self-aligning silicon carbide Dynamic bearing mechanism.

Background technique

Silicon carbide sliding bearing in magnetic drive pump, canned motor pump mostly uses the straight-tube shape sliding bearing structure supported at two, this Kind structure installation is simple and convenient to operate, but is required peace concentricity degree very high.Because sliding bearing 2 is the effect to center, If 2 pairs of neutrality of sliding bearing are bad at two, the unbalance loading phenomenon of sliding bearing 2 will lead to, as shown in Figure 1.

Sliding bearing is usually the axis of both ends support, the center line of bearing and shafting it is difficult to ensure that moderate；And it is carbonized The high rigidity of silicon materials causes it that cannot eliminate unbalance loading by adjustment, and when unbalance loading is excessive, the pressure that load is formed is concentrated super The PV value of carbofrax material is crossed, silicon carbide sliding bearing can generate cyclic annular ditch dug with a plow or even generating material fragmentation.

Thus, how to guarantee that the accuracy of alignment of silicon carbide sliding bearing is magnetic drive pump, canned motor pump field is urgently to be solved asks Topic.

Utility model content

In consideration of it, the utility model provides a kind of Self-aligning silicon carbide sliding bearing mechanism, it is intended to it is sliding to improve silicon carbide The accuracy of alignment of dynamic bearing.

For this purpose, the utility model provides a kind of Self-aligning silicon carbide sliding bearing mechanism comprising pump shaft covers on pump shaft Equipped with axle sleeve, sliding bearing is set on axle sleeve, fixing sleeve is equipped with first sleeve on sliding bearing, and the surface of first sleeve has Along the flange collar of the circumferentially extending of first sleeve, be set with the second casing in first sleeve, the inner wall and flange collar of the second casing it Between pass through cambered surface contact.

Further, the surface of above-mentioned flange collar has arc convex, offers on the inner wall of the second casing and arc convex The arc groove face of contact.

Further, above-mentioned first sleeve is fixedly connected with sliding bearing by positioning pin.

Further, retaining ring is provided between above-mentioned first sleeve and sliding bearing.

Further, above-mentioned second casing includes the upper half-covering tube axially spliced and lower half-covering tube along the second casing, It is connected between upper half-covering tube and lower half-covering tube by positioning screw.

A kind of Self-aligning silicon carbide sliding bearing mechanism provided by the utility model, using the second casing inner wall with it is convex The cambered surface contact passed through between circle, that is, form sphere-contact, swings, therefore is may be implemented in shafting since centering may be implemented in spherical surface Heart line and the self centering effect of sliding bearing center line, the failure for avoiding gauche bearings and damaging bearing occur, especially It is especially apparent for effect in the sliding bearing of long span.Thus, efficiently solve previous magnetic drive pump, canned motor pump sliding bearing The problem of beat；Especially long bearing span, the multistage pump of heavy load, submerged pump sliding bearing damage problem.Such structure can So that traditional magnetic drive pump, canned motor pump are more extensive and mature in the application of long span field.

Detailed description of the invention

By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of silicon carbide sliding bearing in the prior art mechanism；

Fig. 2 is a kind of structural schematic diagram of Self-aligning silicon carbide sliding bearing mechanism provided by the embodiment of the utility model；

Fig. 3 is first sleeve and the in a kind of Self-aligning silicon carbide sliding bearing mechanism provided by the embodiment of the utility model The structural schematic diagram of two casings.

Specific embodiment

Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure It is fully disclosed to those skilled in the art.

Embodiment one:

Referring to fig. 2 to Fig. 3, a kind of Self-aligning silicon carbide sliding axle of the offer of the utility model embodiment one is shown in figure Hold mechanism comprising pump shaft 1 is set with axle sleeve 11 on pump shaft 1, is set with sliding bearing 12 on axle sleeve 11, on sliding bearing 12 Fixing sleeve is equipped with first sleeve 13, and the surface of first sleeve 13 has the flange collar 131 of the circumferentially extending along first sleeve 13, the It is set with the second casing 14 on sleeve 13, is contacted between the inner wall and flange collar 131 of the second casing 14 by cambered surface.

Referring to fig. 2 to Fig. 3, specifically, the surface of flange collar 131 has arc convex 132, opens on the inner wall of the second casing 14 Equipped with the arc groove face 141 contacted with arc convex 132.

A kind of Self-aligning silicon carbide sliding bearing mechanism, utilizes the inner wall and flange collar of the second casing provided by the present embodiment Between the cambered surface contact that passes through, that is, form sphere-contact, swung since centering may be implemented in spherical surface, therefore axial center may be implemented Line and the self centering effect of sliding bearing center line, the failure for avoiding gauche bearings and damaging bearing occur, especially use Effect is especially apparent in the sliding bearing of long span.Thus, it is inclined to efficiently solve previous magnetic drive pump, canned motor pump sliding bearing The problem of pendulum；Especially long bearing span, the multistage pump of heavy load, submerged pump sliding bearing damage problem.Such structure can be with Keep traditional magnetic drive pump, canned motor pump more extensive and mature in the application of long span field.

With continued reference to Fig. 2 to Fig. 3, first sleeve 13 is fixedly connected with sliding bearing 12 by positioning pin 133, to realize anti-rotation Function.

With continued reference to Fig. 2 to Fig. 3, retaining ring 15 is provided between first sleeve 13 and sliding bearing 12, to prevent on-slip moving axis Hold axial movement.

With continued reference to Fig. 2 to Fig. 3, the second casing 14 includes the upper half-covering tube 142 axially spliced along the second casing 14 With lower half-covering tube 143, connected between upper half-covering tube 142 and lower half-covering tube 143 by positioning screw 144, can it is easy to disassemble and Overhaul the second casing.

Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.

Claims (5)

1. a kind of Self-aligning silicon carbide sliding bearing mechanism, which is characterized in that including pump shaft (1), be set on the pump shaft (1) Axle sleeve (11) is set with sliding bearing (12) on the axle sleeve (11), and fixing sleeve is equipped with first set on the sliding bearing (12) It manages (13), the surface of the first sleeve (13) has the flange collar (131) of the circumferentially extending along the first sleeve (13), institute It states and is set on first sleeve (13) the second casing (14), between the inner wall and the flange collar (131) of second casing (14) It is contacted by cambered surface.

2. a kind of Self-aligning silicon carbide sliding bearing mechanism according to claim 1, which is characterized in that the flange collar (131) surface has arc convex (132), offers and the arc convex on the inner wall of second casing (14) (132) the arc groove face (141) contacted.

3. a kind of Self-aligning silicon carbide sliding bearing mechanism according to claim 1, which is characterized in that the first sleeve (13) sliding bearing (12) are fixedly connected with by positioning pin (133).

4. a kind of Self-aligning silicon carbide sliding bearing mechanism according to claim 1, which is characterized in that the first sleeve (13) it is provided between the sliding bearing (12) retaining ring (15).

5. a kind of Self-aligning silicon carbide sliding bearing mechanism according to claim 1, which is characterized in that second casing It (14) include the upper half-covering tube (142) axially spliced and lower half-covering tube (143) along second casing (14), the upper half It is connected between casing (142) and the lower half-covering tube (143) by positioning screw (144).