CN218118537U

CN218118537U - Output end sealing structure of speed reducer for pump

Info

Publication number: CN218118537U
Application number: CN202222734577.8U
Authority: CN
Inventors: 马爱侠; 孙洪利
Original assignee: Ward Transmission Technology Tianjin Co ltd
Current assignee: Ward Transmission Technology Tianjin Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-23
Anticipated expiration: 2032-10-13

Abstract

The utility model provides a speed reducer output seal structure for pump, the periphery of pivot is rotated through the bearing and is cup jointed to the casing in, and packs lubricating oil in the casing, is equipped with the shaft hole on the end cover, and the pivot periphery is located the shaft hole, and on the peripheral fixed connection to casing of end cover, the peripheral fixed V type that cup joints of pivot is sealed, and the one end butt of V type seal to one side of end cover, and the bearing is located the opposite side of end cover, and the pivot periphery is equipped with the ring channel, and the ring channel is used for the pivoted lubricating oil of backward flow. Speed reducer output seal structure for pump, the pivot periphery is equipped with the ring channel, when the pivot is rotatory, the lubricating oil of bearing tip overflow is adhered to by the pivot periphery, when lubricating oil removes to the ring channel, the removal route of lubricating oil changes, is a slope angle with the axis of pivot, receives the rotatory influence of pivot and gets rid of to the end cover on to it is sealed to avoid a large amount of overflows of lubricating oil to the V type, has ensured its leakproofness.

Description

Output end sealing structure of speed reducer for pump

Technical Field

The utility model belongs to the speed reducer field of sealing, especially, relate to a speed reducer output seal structure for pump.

Background

The submersible pump product is a submersible running water lifting machine, has various types, is compact in structure, convenient to install and use, and is widely applied to the aspects of farmland irrigation, sewage drainage and the like. The immersible pump is whole to be located under water, structure to the speed reducer, bearing capacity is strong, requirements such as installation are higher, the shell of speed reducer for the pump is generally become by casing and end cover, the casing passes through the bolt-up with the end cover, the output shaft passes end cover output operation, the speed reducer is because of under water operation, need fully lubricate internal gear again simultaneously, the event needs to do sealedly between output shaft and end cover, speed reducer output seal structure for the pump of prior art is at axle sleeve of output shaft interference fit, then realize sealedly through axle sleeve and rigid seal spare and end cover, its installation is complicated, difficult adjustment, rigid seal practical life is short simultaneously, it is also comparatively loaded down with trivial details to dismantle the maintenance.

Disclosure of Invention

In view of this, the utility model aims at providing a speed reducer output seal structure for pump to solve prior art's rigid seal practical life weak point, the loaded down with trivial details problem is maintained in the installation.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a speed reducer output seal structure for pump, which comprises a rotating shaft, a housing, end cover and V type are sealed, the periphery of pivot is rotated through the bearing and is cup jointed to the casing in, and the casing intussuseption is filled with lubricating oil, be equipped with the shaft hole on the end cover, the pivot periphery is located the shaft hole, and the peripheral fixed connection of end cover is to the casing, the peripheral fixed V type that cup joints of pivot is sealed, the one end butt of V type seal connects to one side of end cover, the bearing is located the opposite side of end cover, the pivot periphery is equipped with the ring channel, the ring channel is used for the epaxial lubricating oil of backward flow pivot.

Furthermore, an annular cavity is formed in the inner ring of the end cover, a plurality of annular grooves are uniformly distributed in the periphery of the rotating shaft along the axial direction, and each annular groove is located in the annular cavity.

Furthermore, the end cover inner ring is provided with a first annular sealing groove, an annular cavity and a second annular sealing groove in sequence along the axial direction, and the first annular sealing groove, the annular cavity and the second annular sealing groove are communicated in sequence.

Furthermore, an oil return hole is formed in the end cover, and the annular cavity is communicated to the interior of the machine shell through the oil return hole.

Furthermore, a first rigid seal is arranged on the periphery of the rotating shaft and is positioned on the inner ring of the end cover, and an annular groove is formed in the periphery of the lower end of the first rigid seal.

Further, the rigid seal upper end is equipped with U type groove, and U type groove is located the top of end cover, and the end cover upper end sets up the second rigid seal, and the one end of second rigid seal is located U type inslot.

Furthermore, two sides of the second rigid seal are respectively provided with a V-shaped seal, and the two V-shaped seals are respectively and fixedly installed in the U-shaped groove.

Compared with the prior art, speed reducer output seal structure for pump have following beneficial effect: the pivot periphery is equipped with the ring channel, when the pivot is rotatory, bearing end portion overflow's lubricating oil is adhered to by the pivot periphery, when lubricating oil removed to the ring channel, the moving path of lubricating oil changes, be a slope angle with the axis of pivot, receive the pivot rotation influence and get rid of to the end cover on, in order to avoid lubricating oil to overflow in a large number to V type sealed, its leakproofness has been ensured, the lubricating oil of backward flow simultaneously and the abundant heat exchange of end cover, guarantee promptly that lubricating oil circulation everywhere, make the lubricating oil heat exchange good, this structure prevents that lubricating oil from revealing simultaneously, has dirt-proof effect.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional view of a first embodiment of a sealing structure of an output end of a speed reducer for a pump according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an inner end cap of a first embodiment of an output end seal of a speed reducer for a pump according to an embodiment of the present invention;

fig. 3 is a schematic sectional structure diagram of a second embodiment of a sealing structure of an output end of a speed reducer for a pump according to the embodiment of the present invention.

Description of the reference numerals:

1-a rotating shaft; 11-an annular groove; 2-end cover; 3-V type sealing; 4-a bearing; 5-a first rigid seal; 6-a second rigid seal; 7-U-shaped groove; 8-ring cavity; 9-a second annular seal groove; 10-oil return hole.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-3, the sealing structure for the output end of the speed reducer for the pump includes a rotating shaft 1, a casing, an end cover 2 and a V-shaped seal 3, the periphery of the rotating shaft 1 is rotatably sleeved in the casing through a bearing 4, and the casing is filled with lubricating oil, the end cover 2 is provided with a shaft hole, the periphery of the rotating shaft 1 is located in the shaft hole, and the periphery of the end cover 2 is fixedly connected to the casing, the V-shaped seal 3 is fixedly sleeved on the periphery of the rotating shaft 1, one end of the V-shaped seal 3 abuts against one side of the end cover 2, the bearing 4 is located on the other side of the end cover 2, the periphery of the rotating shaft 1 is provided with an annular groove 11, when the rotating shaft 1 rotates, the lubricating oil overflowing from the end of the bearing 4 is attached to the periphery of the rotating shaft 1, when the lubricating oil moves to the annular groove 11, the moving route of the lubricating oil changes, and forms a slope angle with the axis of the rotating shaft 1, and is thrown to the end cover 2 by the rotation of the rotating shaft 1, so as to prevent a large amount of lubricating oil from overflowing to the V-shaped seal 3, thereby ensuring the sealing performance of the sealing, and simultaneously, the backflow lubricating oil fully exchanges heat with the end cover 2, i.e. to ensure the flow of the lubricating oil, and ensure the good heat exchange of the lubricating oil.

End cover 2 and pivot 1's cooperation mode has multiple mounting structure when implementing, as fig. 1-2 is the first embodiment of end cover 2 and pivot 1 cooperation structure, 2 inner circles of end cover are equipped with annular chamber 8, a plurality of ring channels 11 of axial equipartition are followed in the 1 periphery of pivot, and every ring channel 11 all is located annular chamber 8, be equipped with oil gallery 10 on the end cover 2, annular chamber 8 communicates to inside the casing through oil gallery 10, when pivot 1 is rotatory, receive 1 rotatory influences of pivot and get rid of to annular chamber 8 in, then can be inside by annular chamber 8 and oil gallery 10 inflow.

For increasing end cover 2 and pivot 1's sealing performance, end cover 2 inner circle is equipped with first annular seal groove, annular chamber 8 and second annular seal groove 9 along the axial in proper order, and first annular seal groove, annular chamber 8 and second annular seal groove 9 are linked together in proper order, as shown in fig. 1, all be equipped with the gap between first annular seal groove and the 1 outer wall of pivot, between second annular seal groove 9 and the 1 outer wall of pivot, the gap is used for controlling the oil mass.

As shown in fig. 3, a second embodiment of a matching structure of an end cover 2 and a rotating shaft 1 is provided, a first rigid seal 5 is arranged on the periphery of the rotating shaft 1, the first rigid seal 5 is located on an inner ring of the end cover 2, an annular groove 11 is arranged on the periphery of the lower end of the first rigid seal 5, a U-shaped groove 7 is arranged at the upper end of the rigid seal, the U-shaped groove 7 is located above the end cover 2, a second rigid seal 6 is arranged on the upper end of the end cover 2, one end of the second rigid seal 6 is located in the U-shaped groove 7, one V-shaped seal 3 is respectively arranged on each of two sides of the second rigid seal 6, and the two V-shaped seals 3 are respectively and fixedly mounted in the U-shaped groove 7.

An annular groove 11 is also formed in the periphery of the rotating shaft 1, lubricating oil of the rotating shaft 1 is thrown into the machine shell to control the amount of the lubricating oil flowing to the end cover 2, meanwhile, the end cover 2, the first rigid seal 5 and the second rigid seal 6 jointly form a labyrinth seal, and V-shaped seals 3 are respectively arranged on two sides of the end portion of the second rigid seal 6 to ensure sealing between the end cover 2 and the rotating shaft 1.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Speed reducer output seal structure for pump, its characterized in that: including pivot (1), the casing, end cover (2) and V type are sealed (3), the periphery of pivot (1) is rotated through bearing (4) and is cup jointed to the casing in, and pack lubricating oil in the casing, be equipped with the shaft hole on end cover (2), pivot (1) periphery is located the shaft hole, and the peripheral fixed connection of end cover (2) is to the casing, the sealed (3) of V type are cup jointed to pivot (1) periphery fixed, the one end butt joint of the sealed (3) of V type is to the one side of end cover (2), bearing (4) are located the opposite side of end cover (2), pivot (1) periphery is equipped with ring channel (11), ring channel (11) are used for the lubricating oil on the backward flow pivot (1).

2. The output end sealing structure of the speed reducer for the pump according to claim 1, characterized in that: an annular cavity (8) is formed in the inner ring of the end cover (2), a plurality of annular grooves (11) are uniformly distributed in the periphery of the rotating shaft (1) along the axial direction, and each annular groove (11) is located in the annular cavity (8).

3. The output end sealing structure of the speed reducer for the pump according to claim 2, characterized in that: the inner ring of the end cover (2) is sequentially provided with a first annular sealing groove, an annular cavity (8) and a second annular sealing groove (9) along the axial direction, and the first annular sealing groove, the annular cavity (8) and the second annular sealing groove (9) are sequentially communicated.

4. The output end sealing structure of the speed reducer for the pump according to claim 2, characterized in that: an oil return hole (10) is formed in the end cover (2), and the annular cavity (8) is communicated to the interior of the machine shell through the oil return hole (10).

5. The output end sealing structure of the speed reducer for the pump according to claim 1, characterized in that: the periphery of the rotating shaft (1) is provided with a first rigid seal (5), the first rigid seal (5) is positioned at the inner ring of the end cover (2), and the periphery of the lower end of the first rigid seal (5) is provided with an annular groove (11).

6. The output end sealing structure of the speed reducer for the pump according to claim 5, characterized in that: the upper end of the rigid seal is provided with a U-shaped groove (7), the U-shaped groove (7) is positioned above the end cover (2), the upper end of the end cover (2) is provided with a second rigid seal (6), and one end of the second rigid seal (6) is positioned in the U-shaped groove (7).

7. The output end sealing structure of the speed reducer for the pump according to claim 6, characterized in that: two sides of the second rigid seal (6) are respectively provided with a V-shaped seal (3), and the two V-shaped seals (3) are respectively and fixedly installed in the U-shaped groove (7).