阅读说明：本技术 一种淬火炉、氮化炉搅拌风机漏油的防护装置 (Protection device for quenching furnace, nitriding furnace stirring fan oil leak ) 是由 欧阳玲湘 张�成 刘剑立 于 2019-09-23 设计创作，主要内容包括：本发明公开的一种淬火炉、氮化炉搅拌风机漏油的防护装置,包括搅拌风机,搅拌风机具有电机和安装在电机的主轴上的扇叶；其还包括：一固定在电机的主轴上且位于电机轴承与扇叶之间的挡油环,挡油环具有一径向向电机的主轴外围延伸的径向挡油环,径向挡油环承接由电机轴承滴落下来的油脂；一固定在电机法兰上且位于电机轴承与扇叶之间的接油盘,电机的主轴穿过接油盘；接油盘内具有一接油腔,挡油环位于接油腔内,以承接由径向挡油环滴落下来的油脂。本发明通过挡油环使电动机轴承泄漏的润滑油流入接油盘,防止润滑油飞溅在产品表面,保护了产品的外观表面质量,同时延长了设备的维修周期,提高了设备的利用率,降低了设备维护成本。(The invention discloses a device for preventing oil leakage of a stirring fan of a quenching furnace and a nitriding furnace, which comprises the stirring fan, wherein the stirring fan is provided with a motor and fan blades arranged on a main shaft of the motor; it still includes: the oil scraper ring is fixed on the main shaft of the motor and positioned between the motor bearing and the fan blade, the oil scraper ring is provided with a radial oil scraper ring which radially extends towards the periphery of the main shaft of the motor, and the radial oil scraper ring is used for bearing the grease dropped from the motor bearing; an oil receiving disc fixed on the motor flange and positioned between the motor bearing and the fan blade, wherein a main shaft of the motor penetrates through the oil receiving disc; the oil receiving disc is internally provided with an oil receiving cavity, and the oil retainer is positioned in the oil receiving cavity to receive grease dropped by the radial oil retainer. The invention makes the lubricating oil leaked from the motor bearing flow into the oil receiving disc through the oil retainer, prevents the lubricating oil from splashing on the surface of a product, protects the appearance surface quality of the product, prolongs the maintenance period of equipment, improves the utilization rate of the equipment and reduces the maintenance cost of the equipment.)

1. A protection device for oil leakage of a stirring fan of a quenching furnace and a nitriding furnace comprises the stirring fan, wherein the stirring fan is provided with a motor and a fan blade arranged on a main shaft of the motor; it is characterized by also comprising:

The oil scraper ring is fixed on the main shaft of the motor and positioned between the motor bearing and the fan blade, the oil scraper ring is provided with a radial oil scraper ring which radially extends towards the periphery of the main shaft of the motor, and the radial oil scraper ring receives grease dropped from the motor bearing;

An oil receiving disc fixed on the motor flange and positioned between the motor bearing and the fan blade, wherein a main shaft of the motor penetrates through the oil receiving disc; the oil receiving disc is internally provided with an oil receiving cavity, and the oil retainer is positioned in the oil receiving cavity to receive the grease dropped by the radial oil retainer.

2. The apparatus for preventing oil leakage of a stirring fan of a quenching furnace or a nitriding furnace as claimed in claim 1, wherein said slinger further has a slinger connecting portion integrally connected to an upper portion of said radial slinger, said slinger connecting portion and said radial slinger having a slinger inner hole through which a main shaft of said motor passes, said main shaft of said motor passing through said slinger inner hole; the oil deflector connecting part is provided with at least one set screw hole, a set screw is screwed in the set screw hole, and the oil deflector is fixed on the main shaft of the motor through the set screw.

3. the apparatus for preventing oil leakage of stirring fan of quenching furnace or nitriding furnace as claimed in claim 2, wherein the upper surface of said radial oil slinger is inclined.

4. The apparatus for protecting a quenching furnace and a nitriding furnace from oil leakage by using a stirring fan as claimed in claim 1, 2 or 3, wherein the oil receiving pan further comprises an inner tube, an outer sleeve and an annular bottom plate for integrally connecting the inner tube and the outer sleeve, and the inner tube, the outer sleeve and the annular bottom plate enclose the oil receiving chamber; the inner pipe is provided with an oil receiving disc inner hole, and a main shaft of the motor penetrates through the oil receiving disc inner hole; the top of the outer sleeve is provided with a flange edge, a plurality of screw mounting holes are uniformly distributed on the flange edge, and a plurality of screws penetrate through the corresponding screw mounting holes and are screwed into the screw holes on the motor flange, so that the oil receiving disc is fixed on the motor flange.

5. The apparatus of claim 4, wherein the diameter of the oil receiving pan is slightly larger than the outer diameter of the main shaft of the motor.

Technical Field

the invention relates to the technical field of heat treatment equipment, in particular to a protection device for product pollution caused by oil leakage of a stirring fan of a quenching furnace, nitriding furnace equipment and other similar heat treatment equipment.

Background

The quenching furnace and the nitriding furnace are widely applied to the heat treatment industry and are common important process equipment for metal heat treatment. In a quenching furnace and a nitriding furnace, a strong stirring fan is usually arranged at the top of the furnace and used for ensuring uniform temperature in the furnace and cooling and quenching gas. Due to the high temperature and high pressure in the furnace, the motor spindle bearing oil seal in the stirring fan is easy to damage after being used for a period of time, and lubricating grease in the bearing is easy to leak. The lubricating grease is liquefied due to high temperature and splashes and adheres to the surface of a product under the action of a powerful fan. Due to high temperature, the liquefied grease corrodes on the surface of the product to form black spots, which affects the appearance quality of the product. In order to prevent this phenomenon, the blower needs to be frequently maintained or replaced. Most of the heat treatment equipment is imported equipment, the stirring fan is a core technical component of the heat treatment equipment, the structure is complex, the price is high, the maintenance or replacement period is long, and the maintenance cost is high. Because the fan bearing slightly leaks oil and does not influence the normal operation of equipment, if a method can be found to avoid the leaked lubricating oil from splashing on the surface of a product, the maintenance period of the equipment is greatly prolonged, the maintenance frequency of the equipment is reduced, the utilization rate of the equipment is improved, the maintenance cost of the equipment is reduced, and the economic benefit is very obvious.

Disclosure of Invention

the technical problem to be solved by the invention is as follows: aiming at the problem of oil leakage of stirring fans in the existing quenching furnace and nitriding furnace, the protection device for preventing the lubricating oil leaked by the fans from splashing to form black spots on the surface of a product and protecting the surface quality of the appearance of the product is provided.

The technical problem to be solved by the invention can be realized by the following technical scheme:

A protection device for product pollution caused by oil leakage of a quenching furnace stirring fan and a nitriding furnace stirring fan comprises the stirring fan, wherein the stirring fan is provided with a motor and a fan blade arranged on a main shaft of the motor; it is characterized by also comprising:

The oil scraper ring is fixed on the main shaft of the motor and positioned between the motor bearing and the fan blade, the oil scraper ring is provided with a radial oil scraper ring which radially extends towards the periphery of the main shaft of the motor, and the radial oil scraper ring receives grease dropped from the motor bearing;

An oil receiving disc fixed on the motor flange and positioned between the motor bearing and the fan blade, wherein a main shaft of the motor penetrates through the oil receiving disc; the oil receiving disc is internally provided with an oil receiving cavity, and the oil retainer is positioned in the oil receiving cavity to receive the grease dropped by the radial oil retainer.

In a preferred embodiment of the present invention, the slinger further has a slinger connecting portion integrally connected to an upper portion of the radial slinger, the slinger connecting portion and the radial slinger having a slinger inner hole through which a main shaft of the motor passes, the main shaft of the motor passing through the slinger inner hole; the oil deflector connecting part is provided with at least one set screw hole, a set screw is screwed in the set screw hole, and the oil deflector is fixed on the main shaft of the motor through the set screw.

In a preferred embodiment of the present invention, an upper surface of the radial slinger is inclined.

In a preferred embodiment of the present invention, the oil receiving pan further comprises an inner pipe, an outer sleeve and an annular bottom plate which connects the inner pipe and the bottom of the outer sleeve into a whole, and the inner pipe, the outer sleeve and the annular bottom plate enclose the oil receiving chamber; the inner pipe is provided with an oil receiving disc inner hole, and a main shaft of the motor penetrates through the oil receiving disc inner hole; the top of the outer sleeve is provided with a flange edge, a plurality of screw mounting holes are uniformly distributed on the flange edge, and a plurality of screws penetrate through the corresponding screw mounting holes and are screwed into the screw holes on the motor flange, so that the oil receiving disc is fixed on the motor flange.

In a preferred embodiment of the invention, the bore diameter of the oil receiving pan inner bore is slightly larger than the outer diameter of the main shaft of the motor.

due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. The invention makes the lubricating oil leaked from the motor bearing flow into the oil receiving disc through the oil retainer, prevents the lubricating oil from splashing on the surface of a product, protects the appearance surface quality of the product, prolongs the maintenance period of equipment, improves the utilization rate of the equipment and reduces the maintenance cost of the equipment.

2. The invention has simple functional structure, can be repeatedly used and ensures the simplicity and the reliability of maintenance and installation.

3. The invention can prolong the maintenance and replacement period of the stirring fan and improve the reliability of the equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the structure and installation of a protective device for product pollution caused by oil leakage of a stirring fan of a quenching furnace and a nitriding furnace.

Detailed Description

in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1, the protection device for oil leakage of the stirring fan of the quenching furnace and the nitriding furnace comprises a stirring fan 100, wherein the stirring fan 100 is provided with a motor 200 and a fan blade 700 arranged on a main shaft 210 of the motor 200, and further comprises an oil retainer ring 300 and an oil receiving pan 400.

The slinger 300 has a radial slinger 320 radially extending toward the outer periphery of the main shaft 210 of the motor 200 and a slinger connecting portion 340 integrally connected to an upper portion of the radial slinger 320, and the slinger connecting portion 340 and the radial slinger 320 have a slinger inner hole 350 therein. At least one fastening screw hole 330 is formed in the slinger connecting portion 340, and a fastening screw 500 is screwed into the fastening screw hole 330. The upper surface 321 of the radial slinger 320 is downwardly inclined.

The oil receiving pan 400 further comprises an inner tube 450, an outer sleeve 460 and an annular bottom plate 470 which integrally connects the inner tube 450 and the bottom of the outer sleeve 460, the inner tube 450, the outer sleeve 460 and the annular bottom plate 470 enclose an oil receiving chamber 420, and the oil receiving chamber 420 is of a U-shaped annular groove structure. The inner tube 450 has an oil receiving pan inner hole 410, and the diameter of the oil receiving pan inner hole 410 is slightly larger than the outer diameter of the main shaft 210 of the motor 200. The top of the outer sleeve 460 is provided with a flange 430, and a plurality of screw mounting holes 440 are uniformly distributed on the flange 430. After the oil receiving pan 400 is installed, the slinger 300 is located within the oil receiving chamber 420.

The invention relates to an installation method of a protection device for oil leakage of a quenching furnace stirring fan and a nitriding furnace stirring fan, which comprises the following steps:

1) The fan blade 700 on the main shaft 210 of the motor 200 of the stirring fan is detached, then the slinger inner hole 350 in the slinger 300 is sleeved on the main shaft 210 of the motor 200, after the position of the slinger 300 is adjusted, the set screw 500 is screwed down to fix the slinger 300 on the main shaft 210 of the motor 200 and between the bearing 240 of the motor 200 and the fan blade 700, and then the high temperature resistant epoxy glue is coated on the set screw hole 330.

2) An oil pan inner hole 410 of the oil pan 400 is inserted into the main shaft 210 of the motor 200, and a flange edge 430 thereof is closely attached to the motor flange 220.

3) A number of screw holes 230 corresponding to the screw mounting holes 440 on the flange 430 of the drip pan 400 are drilled in the motor flange 220 using an electric drill.

4) The oil pan 400 is fixed to the motor flange 220 by screwing the connection screws 600 into the screw holes 230 through the corresponding screw mounting holes 440 and tightening the connection screws 600.

5) Fan blades 700 are installed.

When the stirring fan of the quenching furnace and the nitriding furnace runs, when the lubricating oil leaks from the bearing 240 of the motor 200 of the stirring fan, the leaked lubricating oil drops on the upper surface 321 of the radial oil slinger 320 of the oil slinger 300 along the motor spindle 210 under the action of gravity, and because the upper surface 321 of the radial oil slinger 320 is inclined downwards and rotates along with the motor spindle 210, a certain centrifugal force is generated. Then, the lubricant oil dropped onto the upper surface 321 of the radial oil slinger 320 is thrown into the oil receiving chamber 420 of the oil receiving pan 400, so as to avoid splash forming black spots on the surface of the product, and protect the appearance surface quality of the product.

the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.