CN202402320U

CN202402320U - Anti-reversion device with framework oil seal being replaced conveniently

Info

Publication number: CN202402320U
Application number: CN 201120507390
Authority: CN
Inventors: 谢芳; 尤保健; 禹泽龙
Original assignee: Shanghai Bangpu Industrial Group Co Ltd
Current assignee: Shanghai Bangpu Industrial Group Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-08-29
Anticipated expiration: 2021-12-08

Abstract

The utility model relates to a novel horizontal multi-stage pump hammering tool, which comprises a water inlet segment, a middle segment, a water outlet segment and a draw bar, wherein the draw bar is sequentially connected with the water inlet segment, the middle segment and the water outlet segment. The novel horizontal multi-stage pump hammering tool is characterized in that the novel horizontal multi-stage pump hammering tool also comprises two glands and a cover plate, one gland, the water inlet segment, the cover plate, the middle segment, the water outlet segment and the other gland are sequentially connected by the draw bar, and the two ends of the draw bar are screwed with a nut for fixing the whole hammering tool. The hammering tool has the advantages that the structure is simple, the cost is low, and the production efficiency of a complete machine is high, thereby effectively reducing the possibility that the water pressure of the complete machine is not qualified.

Description

A kind of anti-reverse mechanism of being convenient to change outside framework oil seal

Technical field

The utility model relates to a kind of anti-reverse mechanism that is used for the vertical draining pump of major axis, particularly to the improvement of anti-reverse mechanism structure.

Background technique

The axle of the vertical draining pump of major axis is through being threaded, in case the water pump counter-rotating, screw thread will unclamp, and axle will come off, and water pump just can't use, and anti-reverse mechanism is used for preventing the water pump counter-rotating.Bearing is housed in the anti-reverse mechanism, and bearing needs lubricating grease and lubricates, in order to prevent the leakage of lubricating grease; Need the dress outside framework oil seal to seal between bearing support and the bearing housing, because bearing housing is along with axle rotates together, and outside framework oil seal is fixed on the bearing support; Outside framework oil seal and bearing housing mutual friction mutually like this; Outside framework oil seal after the wearing and tearing just can not use, and needs often to change, and outside framework oil seal 21 is contained in the inside of bearing support in existing structure; Need upper parts all be dismantled during replacing, very inconvenient.In existing structure, outside framework oil seal is mounted on the cylindrical of the bearing housing shaft shoulder in addition, because shaft shoulder cylindrical is bigger, so just needs big outside framework oil seal, causes waste.

Summary of the invention

The purpose of the utility model is the existing the problems referred to above of outside framework oil seal that solve the bearing in the anti-reverse mechanism in the existing technology, and a kind of anti-reverse mechanism of being convenient to change outside framework oil seal is provided.A kind of anti-reverse mechanism of being convenient to change outside framework oil seal of the utility model design; Comprise axle, adjustment nut, screw, anti-reverse end cap, straight pin, counnter attack rotating disk, bearing support, locking nut, bearing, bearing housing, outside framework oil seal; It is characterized in that: on the bottom surface of bearing support, offer the outside framework oil seal groove; The opening of outside framework oil seal groove down; Below the shaft shoulder of bearing housing, offer the outside framework oil seal attachment face, the external diameter of outside framework oil seal attachment face is less than the external diameter of the shaft shoulder, and outside framework oil seal is installed in the outside framework oil seal groove.The utility model has the advantages that with the opening of the outside framework oil seal groove on the bearing support down below the shaft shoulder of bearing housing, process the outside framework oil seal attachment face, the external diameter of outside framework oil seal attachment face is less than the external diameter of the shaft shoulder, the specification of outside framework oil seal just can reduce like this.And assemble like this and only need when dismantling outside framework oil seal carry out from the below just passable, the part on need not dismantle bearing and top thereof, this just greatly facilitates the replacing of outside framework oil seal.

Description of drawings

Below in conjunction with accompanying drawing and instance the utility model is elaborated.

Accompanying drawing one is the existing structure schematic representation; Accompanying drawing two is the structural representation of the utility model; Accompanying drawing three is a model utility bearing housing schematic representation.

Embodiment

Axle 1, adjustment nut 2, screw 3, anti-reverse end cap 4, straight pin 5, counnter attack rotating disk 6, bearing support 7, locking nut 8, bearing 9, bearing housing 10, the outside framework oil seal 11 of comprising as shown in the figure; It is characterized in that: on the bottom surface of bearing support, offer outside framework oil seal groove 12; The opening of outside framework oil seal groove down; Below the shaft shoulder of bearing housing, offer the outside framework oil seal attachment face, the external diameter of outside framework oil seal attachment face is less than the external diameter of the shaft shoulder, and outside framework oil seal is installed in the outside framework oil seal groove.

The bearing housing of the utility model processes the outside framework oil seal attachment face below the shaft shoulder 13; About the external diameter little 20-25mm of the external diameter of outside framework oil seal attachment face than the shaft shoulder, the specification of outside framework oil seal has just reduced accordingly like this, when playing seal action, has also reduced cost; Be processed with 2 * 30 ° chamfering 14 in the bearing housing lower end; The effect of chamfering is an outside framework oil seal convenient for assembly, and the opening of the outside framework oil seal groove on the utility model bearing support assembles like this and only needs when dismantling outside framework oil seal carry out from the below just passable down; Need the not dismantle part on bearing and top thereof, this just greatly facilitates the replacing of outside framework oil seal.In sum, the anti-reverse mechanism of model utility has not only made things convenient for the replacing of outside framework oil seal, has also reduced the size of outside framework oil seal, has practiced thrift cost.

Claims

1. anti-reverse mechanism of being convenient to change outside framework oil seal; Comprise axle, adjustment nut, screw, anti-reverse end cap, straight pin, counnter attack rotating disk, bearing support, locking nut, bearing, bearing housing, outside framework oil seal; It is characterized in that: on the bottom surface of bearing support, offer the outside framework oil seal groove, the opening of outside framework oil seal groove offers the outside framework oil seal attachment face down below the shaft shoulder of bearing housing; The external diameter of outside framework oil seal attachment face is less than the external diameter of the shaft shoulder, and outside framework oil seal is installed in the outside framework oil seal groove.