CN203431046U

CN203431046U - Diaphragm coupling and vertical long shaft pump

Info

Publication number: CN203431046U
Application number: CN201320523463.7U
Authority: CN
Inventors: 彭智新; 陈双喜
Original assignee: HUNAN NEPTUNE PUMP CO Ltd
Current assignee: HUNAN NEPTUNE PUMP CO Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2014-02-12
Anticipated expiration: 2023-08-27

Abstract

The utility model discloses a diaphragm coupling and a vertical long shaft pump, and aims to solve the problem that an existing coupling is prone to corrosion, poor in high temperature resistance ability and the like. The diaphragm coupling comprises a first coupling half and a second coupling half. An intermediate shaft is arranged between the first coupling half and the second coupling half, diaphragm assemblies are arranged between the intermediate shaft and the first coupling half and between the intermediate shaft and the second coupling half respectively, and the intermediate shaft is fixedly connected with the first coupling half and the second coupling shaft through fasteners. The diaphragm coupling is small in size, small in mass, good in vibration absorption ability and capable of compensating for axial displacement, radial displacement and angular displacement of a pump unit.

Description

A kind of diaphragm coupling and vertical long shaft pump

Technical field

The utility model relates to field of fluid machinery, is specially a kind of diaphragm coupling.

Background technique

Current vertical long shaft pump coupling, as shown in Figures 2 and 3, mainly selects rubbercushioned sleeve bearing coupling, star-like coupling etc., is used for buffering vibration and compensating axial displacement.Yet, due to the impact of the distortion after foozle, alignment error, carrying and temperature variation, between prime mover and pump, also have certain radially and angular displacement.The coupling such as rubbercushioned sleeve bearing coupling, star-like coupling is because compensating radially and angular displacement in this case, and the normal operation that may produce influence of vibration pump; And the coupling such as rubbercushioned sleeve bearing coupling, star-like coupling major part has relatively large flange arrangement, make coupling quality, volume relatively large, to installing, produce certain difficulty, and may produce the generation of larger amount of unbalance aggravation vibration.In addition, there is non-refractory, corrosion and the easy defect such as aging in these parts for buffering vibration of elastic ring, elastomer block.

Model utility content

In order to overcome existing coupling, be prone to the problems such as burn into heat-resisting ability is poor, the utility model aims to provide a kind of diaphragm coupling, this coupling adopts diaphragm, under the prerequisite of buffering vibration and compensating axial displacement, can extend the working life of coupling.

To achieve these goals, the technological scheme that the utility model adopts is: a kind of diaphragm coupling, comprises the first half-coupling and the second half-coupling; Its structural feature is; Between described the first half-coupling and the second half-coupling, be provided with jack shaft, between this jack shaft and described the first half-coupling and the second half-coupling, be provided with diaphragm unit, and by fastening piece, jack shaft and the first half-coupling, jack shaft and the second half-coupling be fixed together.

Be below the technological scheme of further improvement of the utility model:

For compensate better between prime mover and pump axially, radially and angular displacement, described diaphragm unit adopts the high temperature resistant corrosion resistant sheet pack of multi-disc collection to form.Further, described high temperature resistant corrosion resistant thin plate is preferably corrosion resistant plate.

The utility model also provides a kind of vertical long shaft pump, and it comprises pump shaft and motor shaft, and described pump shaft and motor shaft are fixedly linked by diaphragm coupling as above; Described the second half-coupling is installed on described pump shaft, described the first half-coupling is installed on described motor shaft.

Further, described pump shaft and the second half-coupling are Spielpassung.Described motor shaft and the first half-coupling are interference fit.

By said structure, the utility model adopts the conventional flexible couplings of pump such as diaphragm coupling elasticity of substitution cover pin coupler, star-like coupling, connects prime mover and pump.Diaphragm coupling of the present utility model is similar to spring column pin cover coupling iso-deflection coupling to the mode of vertical long shaft pump at connection prime mover; Wherein the first half-coupling and motor shaft are taked interference fit, and by key transmission, the second half-coupling and pump shaft adopt Spielpassung, and by key transmission.During installation, first fill half-coupling, rear dress diaphragm unit and jack shaft.

Compared with prior art, the beneficial effects of the utility model are: the utility model diaphragm coupling volume is little, quality is light, and have good vibration absorption ability, can compensate between prime mover and pump axially, radially and angular displacement, absorbing, vibration isolation, to bear the ability of misaligning strong; Diaphragm coupling is compared with the rubbercushioned sleeve bearing coupling of same shelves or star-like coupling quality is light, volume is little, installation, use, easy maintenance, and the additional load acting on connection device is little; Middle diaphragm adopts the folded collection of several pieces Stainless Sheet Steels to form, and can be applicable to high temperature, corrosion occasion.

Below in conjunction with drawings and Examples, the utility model is further elaborated.

Accompanying drawing explanation

Fig. 1 is a kind of embodiment's of the utility model structure principle chart;

Fig. 2 is the structure principle chart of existing rubbercushioned sleeve bearing coupling;

Fig. 3 is the structure principle chart of existing star coupling.

In the drawings

1-motor shaft; 2-the first half-coupling; 3-pump shaft; 4-the second half-coupling;

5-bolt; 6-jack shaft; 7-diaphragm unit; 8-elastic ring; 9-pin parts; 10-elastomer block.

Embodiment

, as shown in Figure 1, comprise the first half-coupling 2 and the second half-coupling 4; Between described the first half-coupling 2 and the second half-coupling 4, be provided with jack shaft 6, between this jack shaft 6 and described the first half-coupling 2 and the second half-coupling 4, be provided with diaphragm unit 7, and by bolt 5, jack shaft 6 and the first half-coupling 2, jack shaft 6 and the second half-coupling 4 be fixed together; Described diaphragm unit 7 adopts the folded collection of multi-disc corrosion resistant plates to form, and can certainly be other high temperature resistant corrosion resistant thin plate, as 301,304 etc.

, as shown in Figure 1, comprise pump shaft 3 and motor shaft 1, it is characterized in that, described pump shaft 3 and motor shaft 1 are fixedly linked by above-mentioned diaphragm coupling; Described the second half-coupling 4 is installed on described pump shaft 3, described the first half-coupling 2 is installed on described motor shaft 1; Wherein said pump shaft 3 and the second half-coupling 4 are Spielpassung; Described motor shaft 1 and the first half-coupling 2 are interference fit.

The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the utility model, and be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.

Claims

1. a diaphragm coupling, comprises the first half-coupling (2) and the second half-coupling (4); It is characterized in that; Between described the first half-coupling (2) and the second half-coupling (4), be provided with jack shaft (6), between this jack shaft (6) and described the first half-coupling (2) and the second half-coupling (4), be provided with diaphragm unit (7), and by fastening piece, jack shaft (6) and the first half-coupling (2), jack shaft (6) be fixed together with the second half-coupling (4).

2. diaphragm coupling according to claim 1, is characterized in that, described diaphragm unit (7) adopts the high temperature resistant corrosion resistant sheet pack of multi-disc collection to form.

3. diaphragm coupling according to claim 2, is characterized in that, described high temperature resistant corrosion resistant thin plate is corrosion resistant plate.

4. a vertical long shaft pump, comprises pump shaft (3) and motor shaft (1), it is characterized in that, described pump shaft (3) and motor shaft (1) are fixedly linked by the diaphragm coupling as described in one of claim 1-3; Upper described the second half-coupling (4) of installing of described pump shaft (3), upper described the first half-coupling (2) of installing of described motor shaft (1).

5. vertical long shaft pump according to claim 4, is characterized in that, described pump shaft (3) is Spielpassung with the second half-coupling (4).

6. vertical long shaft pump according to claim 4, is characterized in that, described motor shaft (1) is interference fit with the first half-coupling (2).