CN215370210U

CN215370210U - Crankshaft shaft head protection structure of high-pressure water descaling pump

Info

Publication number: CN215370210U
Application number: CN202121055016.4U
Authority: CN
Inventors: 邵立新
Original assignee: Jiangxi Lixinji Hydraulic Equipment Manufacture Co ltd
Current assignee: Jiangxi Lixinji Hydraulic Equipment Manufacture Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-31
Anticipated expiration: 2031-05-17

Abstract

The utility model relates to the technical field of high-pressure water descaling pump manufacturing, in particular to an automatic cooling device for sealing a crankcase of a high-pressure water plunger pump, which comprises a shaft end cover, wherein a dead end cover is arranged at the left end part of the shaft end cover, a bearing sheath is arranged on the left inner wall of the shaft end cover and positioned on the right side of the dead end cover, a crankshaft is transversely arranged in the middle of the inside of the shaft end cover, a right bearing is arranged on the right outer wall of the crankshaft and positioned inside the shaft end cover, a shaft end cover is arranged at the right end part of the shaft end cover, a shaft head protection structure is arranged on the right outer wall of the crankshaft and positioned on the right side of the right bearing, the bearing sheath is sleeved on the left outer wall of the crankshaft, the shaft head protection structure comprises a shaft protection sleeve, a UO combined seal, an exhaust barrel, a seal gland and an outer cover, and a UO combined seal is arranged between the left outer wall of the shaft protection sleeve and the shaft end cover, the whole equipment has simple structure and can protect the crankshaft from being abraded.

Description

Crankshaft shaft head protection structure of high-pressure water descaling pump

Technical Field

The utility model relates to the technical field of manufacturing of high-pressure water descaling pumps, in particular to a crankshaft head protection structure of a high-pressure water descaling pump.

Background

The crankcase is a device for converting rotary motion into linear motion, one end of the crankshaft extends out of the box body, is connected with a power device such as a motor or a diesel engine and the like, drives the crankshaft to rotate, and is connected to the plunger through a crank throw and a connecting rod on the crankshaft to do linear motion so as to generate high-pressure water pulse jet.

When the existing power device drives a crankshaft, the shaft head rotates at a high speed, the contact friction between the seal and the circumferential surface of the shaft head can increase the temperature, the elastic force of a spring in the seal can tightly hold the shaft head, the shaft head can be abraded due to long-time operation, lubricating oil is leaked, the oil in a crankcase is insufficient, the lubrication is affected, the environmental pollution is also caused, the bearing is abraded to a certain degree and then needs to be replaced again, the economic loss is large, and therefore the crankshaft shaft head protection structure of the high-pressure water descaling pump is needed to improve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a crankshaft head protection structure of a high-pressure water descaling pump, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a crankshaft spindle nose protection architecture of water under high pressure descaling pump, includes the crankcase, the vexed end cover is installed to the left side tip of crankcase, the bearing sheath is installed to the left side inner wall of crankcase and the right side that is located the vexed end cover, the bent axle is transversely installed to the department in the middle of the inside of crankcase, the right side outer wall of bent axle and the internally mounted who is located the crankcase have the right side bearing, the spindle nose end cover is installed to the right side tip of crankcase, the right side outer wall of bent axle and the right side that is located the right side bearing install spindle nose protection architecture.

As the scheme selected by the utility model, the bearing sheath is sleeved on the outer wall of the left side of the crankshaft.

The shaft head protection structure comprises a shaft protection sleeve, a UO combined seal, an exhaust duct, a seal gland and an outer cover, wherein the UO combined seal is arranged between the outer wall of the left side of the shaft protection sleeve and the shaft end cover, the exhaust duct is arranged on the right side of the shaft protection sleeve, the seal gland is arranged at the end part of the left side of the exhaust duct, and the outer cover is arranged on the outer wall of the right side of the exhaust duct.

According to the scheme adopted by the utility model, the blade fan is arranged on the outer wall of the right side of the shaft protection sleeve, the shaft protection sleeve and the blade fan are of an integrally formed structure, the surface of the shaft protection sleeve is subjected to nitriding process treatment and grinding processing, and the shaft protection sleeve and the crankshaft are in interference fit.

As the scheme adopted by the utility model, air inlet channels which are uniformly distributed are circumferentially arranged between the outer cover and the shaft end cover.

As the scheme adopted by the utility model, the UO combined seal adopts a UO combined non-standard design, namely the combination of a U-shaped seal ring and an O-shaped seal ring, the U-shaped seal ring is made of fluororubber, the width of the U-shaped seal ring is lengthened, three lips with contact angles of 15 degrees are arranged, the O-shaped ring adopts a spring-wrapped anti-aging silica gel form, and the O-shaped ring is nested in the U-shaped ring.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the shaft protective sleeve can prevent the crankshaft and the UO combined seal from contacting with each other in the actual use process of the device, so that the UO combined seal can not generate heat due to friction with the crankshaft in the actual use process of the device, meanwhile, the surface of the shaft protective sleeve is subjected to nitriding process treatment and grinding processing, the wear resistance of the shaft protective sleeve can be improved to a certain extent, and the service life of the crankshaft can be greatly prolonged due to the arrangement of the structure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the spindle head protection structure of the present invention;

FIG. 3 is a schematic view of the shaft protective sleeve structure of the present invention;

fig. 4 is a left side view of the shaft protective sleeve of the present invention.

In the figure: 1. a crankcase; 2. closing the end cover; 3. a bearing sheath; 4. a crankshaft; 5. a right side bearing; 6. a shaft end cover; 7. a shaft head protection structure; 8. a shaft protective sleeve; 9. UO combined sealing; 10. an exhaust duct; 11. a sealing gland; 12. and (4) an outer cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

While several embodiments of the present invention will be described below in order to facilitate an understanding of the utility model, with reference to the related description, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a crankshaft head protective structure of water under high pressure descaling pump, including crankcase 1, vexed end cover 2 is installed to the left side tip of crankcase 1, bearing sheath 3 is installed to the left side inner wall of crankcase 1 and the right side that is located vexed end cover 2, department transversely installs bent axle 4 in the middle of the inside of crankcase 1, bent axle 4's right side outer wall and the internally mounted who is located crankcase 1 have right side bearing 5, shaft end cover 6 is installed to the right side tip of crankcase 1, bent axle 4's right side outer wall is installed shaft head protective structure 7 on the right side that is located right side bearing 5.

In an embodiment, please refer to fig. 1, 2, 3, and 4, the bearing protection sleeve 3 is sleeved on the left outer wall of the crankshaft 4, the spindle head protection structure 7 includes a spindle protection sleeve 8, a UO combination seal 9, an exhaust funnel 10, a gland 11 and an outer cover 12, the UO combination seal 9 is installed on the left outer wall of the spindle protection sleeve 8 and between the left outer wall and the spindle cover 6, the exhaust funnel 10 is installed on the right side of the spindle protection sleeve 8, the gland 11 is installed on the left end of the exhaust funnel 10, the outer cover 12 is installed on the right outer wall of the exhaust funnel 10, the blade is installed on the right outer wall of the spindle protection sleeve 8, the spindle protection sleeve 8 and the blade are in an integrated structure, the surface of the spindle protection sleeve 8 is subjected to nitriding process and grinding process, the fitting manner between the spindle protection sleeve 8 and the crankshaft 4 is interference fit, the air inlet channels uniformly distributed are circumferentially arranged between the outer cover 12 and the spindle cover 6, and the spindle protection sleeve 3 can prevent the crankshaft 4 and the UO combination seal in the actual use process of the device Seal 9 and contact each other to guarantee this device in the in-service use process, UO combination seal 9 can not produce the heat with bent axle 4 friction, and meanwhile the surface of axle protective sheath 8 can improve its wearability to a certain extent through nitriding process processing and abrasive machining, and the setting of structure can improve bent axle 4's life-span greatly more than the whole.

The working process of the utility model is as follows: during the use, install spindle nose protective structure 7 according to the position that shows the figure at the right-hand member of end cover 6 can, axle protective sheath 8 can avoid bent axle 4 and UO composite seal 9 to contact each other in this device in-service use process, thereby guarantee this device in-service use process, UO composite seal 9 can not produce the heat with bent axle 4 friction, meanwhile, the surface of axle protective sheath 8 is through nitriding process and abrasive machining, can improve its wearability to a certain extent, the setting of structure can improve bent axle 4's life-span greatly more than whole.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a crankshaft spindle nose protection architecture of high pressure water descaling pump, includes crankcase (1), its characterized in that: the utility model discloses a crank shaft head protection structure, including crankcase (1), vexed end cover (2) is installed to the left side tip of crankcase (1), bearing sheath (3) are installed to the left side inner wall of crankcase (1) and the right side that is located vexed end cover (2), bent axle (4) are transversely installed to the inside middle department of crankcase (1), the right side outer wall of bent axle (4) and the internally mounted who is located crankcase (1) have right side bearing (5), shaft end cover (6) are installed to the right side tip of crankcase (1), spindle nose protection structure (7) are installed to the right side outer wall of bent axle (4) and the right side that is located right side bearing (5).

2. The crankshaft head protection structure of a high pressure water descaling pump according to claim 1, characterized in that: the bearing sheath (3) is sleeved on the outer wall of the left side of the crankshaft (4).

3. The crankshaft head protection structure of a high pressure water descaling pump according to claim 1, characterized in that: shaft head protection architecture (7) include axle protective sheath (8), UO composite seal (9), exhaust tube (10), gland (11) and enclosing cover (12), the left side outer wall of axle protective sheath (8) and with install UO composite seal (9) between axle head cover (6), exhaust tube (10) are installed on the right side of axle protective sheath (8), gland (11) are installed to the left side tip of exhaust tube (10), enclosing cover (12) are installed to the right side outer wall of exhaust tube (10).

4. The crankshaft head protection structure of a high pressure water descaling pump according to claim 3, characterized in that: the right side outer wall of axle protective sheath (8) is installed the leaf fan, and axle protective sheath (8) and leaf fan be the integrated into one piece structure, the surface of axle protective sheath (8) is handled and abrasive machining through the nitriding process, the cooperation mode between axle protective sheath (8) and bent axle (4) is interference fit.

5. The crankshaft head protection structure of a high pressure water descaling pump according to claim 3, characterized in that: air inlet channels which are uniformly distributed are circumferentially arranged between the outer cover (12) and the shaft end cover (6).

6. The crankshaft head protection structure of a high pressure water descaling pump according to claim 3, characterized in that: UO combination seal (9) adopt the nonstandard design of UO combination, the combination of U type sealing washer and O type sealing washer promptly, and fluororubber is chooseed for use to U type sealing washer material, and the U type sealing washer has done the extension in the width to be provided with three lips that contact angle is 15, O type circle adopts the form of the ageing-resistant silica gel of spring package, and O type circle nestification is inside the U type circle.