CN218563979U

CN218563979U - Novel snap ring cylinder type coupling structure used between vertical pump shafts

Info

Publication number: CN218563979U
Application number: CN202222841972.6U
Authority: CN
Inventors: 郝迎旭
Original assignee: Shenyang Industrial Pump Manufacturing Co ltd
Current assignee: Shenyang Industrial Pump Manufacturing Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-03
Anticipated expiration: 2032-10-27

Abstract

A novel snap ring cylinder type coupling structure used between vertical pump shafts belongs to the technical field of vertical suspension pump machinery. The utility model discloses a shaft coupling drum, a serial communication port, shaft coupling drum falls into first profile part and second profile part about along the axis, first profile part with all be provided with counter bore and screw hole on the second profile part, first profile part with the second profile part is in the counter bore with screw hole is interior through first screw packing ring group and second screw packing ring group link, first profile part with second profile part axial symmetry is provided with the keyway, first profile part with the second profile part carries out the key-type connection through last key and last minute, first profile part with the second profile part carries out the key-type connection through the lower shaft key with the lower minute. The utility model discloses simple structure, the cost is lower, and connection quality is reliable, can extensively be applicable to the power transmission hookup and need frequent frequency conversion rotational speed and in the medium wet operation suspend major axis vertical pump occasion in midair.

Description

Novel snap ring cylinder type coupling structure used between vertical pump shafts

Technical Field

The utility model belongs to the technical field of vertical pump machinery that suspends in midair, specifically relate to a novel vertical pump is with snap ring cylinder shaft coupling structure between axle.

Background

Couplings are mechanical components used to couple two shafts of different mechanisms for common rotation to transmit torque, and more commonly used in vertical submerged centrifugal pump systems are rigid flange couplings and split-shell couplings. In the traditional rigid flange coupling, two half coupling joints are respectively connected with two shafts by using a common flat key, then the two half coupling joints are connected into a whole by using bolts, the axial fixation of a connected transmission shaft is realized by relying on the fastening bolt at the shaft end, and the upper half coupling joint and the lower half coupling joint of the traditional rigid flange coupling respectively need one fastening bolt and one base plate to realize the axial fixation with the transmission shaft, thereby not only structurally lengthening the axial length of the coupling joints, but also having the loosening hidden danger of the fastening bolts; the split snap ring structure is applied to the double-shell coupler, so that the axial bearing capacity can be greatly improved, the problem of axial positioning is well solved, but under the condition that the lower shaft assembly is high in quality or the rotating speed is frequently adjusted in a frequency conversion mode, fastening bolts of the double-shell coupler are easy to loosen and release in a wet state, and accident potential is brought to centering connection, positioning and stable operation of the upper shaft and the lower shaft. In addition, if the coupling is applied to a suspension long shaft vertical pump which is operated in a wet state in a medium, the conventional coupling has the problem that deposits are accumulated and are difficult to process.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model makes up the defects of the prior art and provides a novel snap ring cylinder type coupling structure used between vertical pump shafts; the utility model discloses simple structure, the cost is lower, and connection quality is reliable, simple to operate, to its axle not damaged of connecting, can extensively be applicable to power transmission hookup and need frequent frequency conversion rotational speed and wet attitude operation suspend major axis vertical pump occasion in midair in the medium.

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

The utility model provides a novel vertical pump shaft is with snap ring cylinder shaft coupling structure between room, including the shaft coupling drum, its characterized in that, the shaft coupling drum falls into first subdivision spare and second subdivision spare about along the axis, first subdivision spare with all be provided with counter bore and screw hole on the second subdivision spare, first subdivision spare with the second subdivision spare is in the counter bore with screw hole is interior through first screw packing ring group and second screw packing ring group link, first subdivision spare with second subdivision spare axial symmetry is provided with the keyway, first subdivision spare with the second subdivision spare carries out the key-type connection through last axle key and last split axle, first subdivision spare with second subdivision spare carries out the key-type connection through axle key down with the split axle down, go up the split axle with the split axle contactless down, it is in to go up the split axle one end in the shaft coupling drum is connected with two semicircular snap rings down, go up two semicircular snap rings with the fixed suit of bore on the shaft coupling drum respectively with the protective sheath down connect the fixed protective sheath on the shaft coupling drum, the both ends down.

Furthermore, the upper branch shaft is arranged at one end outside the coupling cylinder and is provided with an upper water retaining ring in an interference fit mode, the upper water retaining ring is embedded at the upper part of the upper fixing protective sleeve, the lower branch shaft is arranged at one end outside the coupling cylinder and is provided with a lower water retaining ring in an interference fit mode, and the lower water retaining ring is embedded at the upper part of the lower fixing protective sleeve.

Furthermore, a shaft head boss and an annular groove are arranged at one end of each of the upper split shaft and the lower split shaft in the coupling cylinder, and the upper double-semicircular clamping ring and the lower double-semicircular clamping ring are in transition fit with the corresponding annular grooves respectively.

Furthermore, the outer diameters of the shaft head bosses are larger than the inner diameters of the upper double-semicircular clamping rings and the lower double-semicircular clamping rings.

Furthermore, the counter bore and the threaded hole are symmetrically distributed on the first section part and the second section part, and the first screw washer group and the second screw washer group are symmetrically arranged in a vertically staggered mode to connect the first section part and the second section part.

The beneficial effects of the utility model.

The utility model has compact structure, and the torsional strength can be increased by the two-in-one coupling cylinder, the upper double semicircular snap ring, the lower double semicircular snap ring, the upper fixing protective sleeve and the lower fixing protective sleeve; the safety and the reliability of the protective sleeve can be improved by fixing the protective sleeve, and double protection effects are realized; the problem that sediment (such as salt and the like) is extremely difficult to process is solved by arranging the water retaining ring; the first screw washer group and the second screw washer group which are symmetrically arranged can solve the problem of component balance, and no vibration and stable operation are ensured in the using process.

Drawings

In order to make the technical problem, technical scheme and beneficial effect that the utility model solved more clearly understand, it is right to combine the attached drawing and detailed description mode below the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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

Fig. 2 isbase:Sub>A schematic sectional view taken along the linebase:Sub>A-base:Sub>A of fig. 1 according to the present invention.

Fig. 3 is a schematic view of the end structure of the upper split shaft (lower split shaft) of the present invention.

Fig. 4 is a schematic structural view of the upper double semicircular snap ring (lower double semicircular snap ring) of the present invention.

The mark in the figure is: the device comprises a coupling cylinder 1, a first split part 2, a second split part 3, a counter bore 4, a threaded hole 5, a first screw washer group 6, a second screw washer group 7, a key groove 8, an upper shaft key 9, an upper split shaft 10, a lower shaft key 11, a lower split shaft 12, an upper double-semicircular snap ring 13, a lower double-semicircular snap ring 14, an upper fixing protective sleeve 15, a lower fixing protective sleeve 16, an upper water retaining ring 17, a lower water retaining ring 18, a shaft head boss 19 and an annular groove 20.

Detailed Description

As shown in the accompanying drawings, the present embodiment provides a novel snap ring cylinder type coupling structure for use between vertical pump shafts, which includes a coupling cylinder 1, and the coupling cylinder 1 can be divided into a first section 2 and a second section 3 along the left and right of the central axis by machining or linear cutting.

All be provided with counter bore 4 and screw hole 5 on first section part 2 and the second section part 3, counter bore 4 and screw hole 5 are in first section part 2 and the second section part 3 symmetric distribution, first section part 2 and second section part 3 are connected through first screw packing ring group 6 and second screw packing ring group 7 in counter bore 4 and screw hole 5, the subassembly balance problem can be solved through symmetrical arrangement's first screw packing ring group 6 and second screw packing ring group 7, guarantee no vibration in the use, even running.

First section

2 and 3 axial symmetries of second section are provided with keyway 8, and first section 2 and second section 3 carry out the key-type connection through last key 9 and last minute axle 10, and first section 2 and second section 3 carry out the key-type connection through axle key 11 down with minute axle 12 down, go up minute axle 10 and minute axle 12 contactless down, are that whole shaft coupling drum 1 links together last minute axle 10 and minute axle 12 down.

The end of the upper split shaft 10 in the coupling cylinder 1 is provided with a shaft head boss 19 and an annular groove 20, the upper double semi-circular snap ring 13 is in transition fit with the annular groove 20 of the upper split shaft 10, the end of the lower split shaft 12 in the coupling cylinder 1 is also provided with the shaft head boss 19 and the annular groove 20, the lower double semi-circular snap ring 14 is in transition fit with the annular groove 20 of the lower split shaft 12, the outer diameter of the shaft head boss 19 is larger than the inner diameter of the upper double semi-circular snap ring 13 and the inner diameter of the lower double semi-circular snap ring 14, the relative position stability of the upper double semi-circular snap ring 13 and the lower double semi-circular snap ring 14 on the upper split shaft 10 and the lower split shaft 12 is ensured, and the upper double semi-circular snap ring 13 and the lower double semi-circular snap ring 14 are both in fit with the inner hole of the coupling cylinder 1.

The upper end and the lower end of the coupling cylinder 1 are respectively provided with an upper fixing protective sleeve 15 and a lower fixing protective sleeve 16 in a sleeved mode, and the upper fixing protective sleeve 15 and the lower fixing protective sleeve 16 are in transition fit with the outer surface of the coupling cylinder 1 and are connected to the coupling cylinder 1 through screws.

An upper water retaining ring 17 is arranged at one end of the upper sub-shaft 10 outside the coupling cylinder 1 in an interference fit mode, the upper water retaining ring 17 is embedded in the upper portion of the upper fixing protective sleeve 15, a lower water retaining ring 18 is arranged at one end of the lower sub-shaft 12 outside the coupling cylinder 1 in an interference fit mode, the lower water retaining ring 18 is embedded in the upper portion of the lower fixing protective sleeve 16, and the problem that sediments (such as salt and the like) are accumulated and difficult to process during wet operation in a medium is solved through the upper water retaining ring 17 and the lower water retaining ring 18.

It should be understood that the above detailed description of the present invention is only used for illustrating the present invention and not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as satisfy the operation needs, all be in the protection scope of the utility model.

Claims

1. The utility model provides a novel vertical pump is snap ring barrel coupling structure for between axle, includes shaft coupling drum (1), its characterized in that, shaft coupling drum (1) divide into first branch piece (2) and second branch piece (3) about the axis, first branch piece (2) with all be provided with counter bore (4) and silk hole (5) on second branch piece (3), first branch piece (2) with second branch piece (3) are in counter bore (4) with be connected through first screw packing ring group (6) and second screw packing ring group (7) in silk hole (5), first branch piece (2) with second branch piece (3) axial symmetry is provided with keyway (8), first branch piece (2) with second branch piece (3) carry out the key-type connection through last split key (9) and last split shaft (10), first branch piece (2) and second branch piece (3) carry out the split shaft key-type connection through lower split key (11) and lower shaft (12), the one end of snap ring (12) is connected with the interior double split shaft coupling drum (12), the one end (14) is connected with the interior double split cylinder (12) of snap ring (12), the lower shaft coupling drum (12) is connected with the lower shaft coupling drum (1), go up two semi-circular snap rings (13) with down two semi-circular snap rings (14) all with the hole cooperation of shaft coupling drum (1), both ends suit respectively and are provided with fixed protective sheath (15) and fixed protective sheath (16) down in shaft coupling drum (1) about, go up fixed protective sheath (15) with down fixed protective sheath (16) all with the surface transition fit of shaft coupling drum (1).

2. The novel snap ring barrel type coupling structure for the vertical pump shaft according to claim 1, wherein an upper water retaining ring (17) is arranged at one end of the upper sub-shaft (10) outside the coupling cylinder (1) in an interference fit manner, the upper water retaining ring (17) is embedded at the upper part of the upper fixing protective sleeve (15), a lower water retaining ring (18) is arranged at one end of the lower sub-shaft (12) outside the coupling cylinder (1) in an interference fit manner, and the lower water retaining ring (18) is embedded at the upper part of the lower fixing protective sleeve (16).

3. The novel snap ring cylinder type coupling structure used between vertical pump shafts as claimed in claim 1, wherein the upper split shaft (10) and the lower split shaft (12) are provided with a shaft head boss (19) and an annular groove (20) at one end in the coupling cylinder (1), and the upper double semi-circular snap ring (13) and the lower double semi-circular snap ring (14) are in transition fit with the corresponding annular groove (20) respectively.

4. The novel vertical type coupler structure with the clamping ring barrel between the pump shafts as claimed in claim 3, wherein the outer diameters of the shaft head bosses (19) are larger than the inner diameters of the upper double semicircular clamping ring (13) and the lower double semicircular clamping ring (14).

5. A novel snap ring barrel type coupling structure used between vertical pump shafts as claimed in claim 1, wherein said counter bore (4) and said screw hole (5) are symmetrically distributed on said first section (2) and said second section (3), and said first screw washer set (6) and said second screw washer set (7) are symmetrically arranged in a staggered manner from top to bottom to connect said first section (2) and said second section (3).