CN103090009A

CN103090009A - Pneumatic sealing device of pulverizer

Info

Publication number: CN103090009A
Application number: CN201310045432XA
Authority: CN
Inventors: 陈义华
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-05-08

Abstract

The invention discloses a pneumatic sealing device of a pulverizer. The pneumatic sealing device of the pulverizer comprises a revolving shaft and a bearing seat. The rotating shaft is matched with the bearing of the bearing seat, sealing elements are arranged between the rotating shaft and the inner hole of the bearing cover of the bearing seat, the sealing element is a framework oil seal, at least two framework oil seals are arranged on the rotating shaft in a penetrating mode and arranged inside the inner hole of the bearing cover, and the framework oil seals are limited between the gland of the mouth hole of the inner hole of the bearing cover and the hole bottom of the inner hole of the bearing cover. Threaded holes used for pushing the framework oil seals out of the inner hole of the bearing cover are evenly formed in the bottom of the inner hole of the bearing cover. The pneumatic sealing device of the pulverizer mainly applies the framework oil seals mainly used for liquid seal to the field of air seal, the usage of the framework oil seals is enlarged, and meanwhile the aspects of air seal design and usage are enabled to have more choice, and good effect is achieved.

Description

The shredder pneumatic sealing device

(1) technical field:

The present invention relates to sealing mechanism, is a kind of shredder pneumatic sealing device specifically.

(2) background technique:

Present domestic superfine powder production and application be TF-700 particle separating crasher group (adopt Japan thin river the Super Micro Mill of company type ultrafine crusher), have without the characteristics such as sieve, wear-resisting, easy care cleaning and crushing efficiency is high, produce the advantages such as dirt is little, noise is low, granularity is adjustable, be widely used in the Crushing of Ultrafine of the industries such as coating, pigment, nonmetallic ore, industrial chemicals, medicine, agricultural chemicals.The working principle of this equipment: equipment is comprised of pulverizing-classifying chamber and the blower fan of two series connection of installing on horizontal axis, pulverizing-classifying chamber is by forming with the rotor of impact blades and stator liner and classifying turbine, the blade of first and second rotor has respectively 30 °, 40 ° inclination angles, form blast during rotation, and first and second step cone is radial blade accordingly, form windage during rotation, just form when both rotate to revolve and follow air-flow, make particle repeatedly be subjected to strong impact, shearing, rubbing action and pulverize.

Find in use, there is poor stability in this shredder, rate of fault is high, maintenance cost is high, energy consumption is large, product yield and quality are difficult to ensure many deficiencies such as card.Main cause is because the main shaft seal of shredder is bad, causes dust to enter main shaft bearing, causes equipment stuck.

The main shaft seal mode of described shredder adopts wool felt sealing, and the wool felt sealing is a kind of contact-type motive sealing, and owing to having machining error and assembly error, in running, wool felt constantly occurs rub and wear and tear with rotating shaft, and then makes seal failure; In addition, traditional gas-tight sealing such as spiral seal, labyrinth seal also can't solve this difficult problem.

(3) summary of the invention:

For this reason, the present invention proposes a kind of further shredder pneumatic sealing device that improves sealing effect.

The technological scheme of shredder pneumatic sealing device of the present invention comprises rotating shaft and bearing support, described rotating shaft is matched with the bearing of bearing support, be provided with Sealing between the bearing cap endoporus of rotating shaft and bearing support, difference is that described Sealing is outside framework oil seal, at least two outside framework oil seals are arranged in side by side rotating shaft and are placed in the bearing cap endoporus, between described outside framework oil seal is limited at the bottom of the hole of the gland of bearing cap bore orifice and bearing cap endoporus.

Described outside framework oil seal is a kind of contact-type motive sealing, it is one of main structure of reciprocating movement sealing and static seal, has the larger lip of spring-back force than other lip-type packing, and sealing contact surface narrower in width, axle is had follow preferably compensation performance, can obtain good sealing effect with larger lip radial force.

The present invention adopts at least two outside framework oil seals, in case after making first outside framework oil seal cause because dust gathers losing efficacy, second outside framework oil seal still can play seal action, its working life than only use one raising nearly a hundred times, basically can accomplish non-maintaining; The present invention has broken through traditional gas seal theory and an outside framework oil seal application at hydraulic seal, has expanded the application area of oil sealing, has enriched gas seal theory and design.

Be to remove smoothly outside framework oil seal, at the bottom of the hole of described bearing cap endoporus on the uniform tapped hole of outside framework oil seal being released the bearing cap endoporus that offers.

Described gland is connected with gland bolt with bearing cap.

Advantage of the present invention:

1, the shredder pneumatic sealing device of the present invention creative expansion of outside framework oil seal that will be mainly used in hydraulic seal uses the gas seal field, expanded the use of outside framework oil seal, there have been more more options the aspect of gas seal design and use simultaneously, obtains good effect.

2, the present invention has cancelled the use of dovetail groove in the conventional seals and has changed the garden cylinder into, has shortened surface of contact, can be set to loose fit, has reduced requirement on machining accuracy, and simple in structure, processing charges is low, to the coaxality no requirement (NR) of axle.

3, the present invention adopts two outside framework oil seal forms, and improve nearly a hundred times working life, realizes that few maintenance is even without maintenance.

4, increase tapped hole in bearing cap of the present invention, outside framework oil seal for convenience detach improves maintenance efficiency and does not destroy original precision.

(4) description of drawings:

Fig. 1 is the structural representation of one embodiment of the present invention.

Figure number sign: 1, rotating shaft; 2, bearing cap; 3, gland; 4, outside framework oil seal; 5, tapped hole; 6, bolt of bearing cap; 7, gland bolt.

(5) embodiment:

Below in conjunction with accompanying drawing, technical solution of the present invention is described further:

Shredder pneumatic sealing device of the present invention comprises rotating shaft 1 and bearing support, be provided with bearing in described bearing support, bearing support is provided with the bearing cap 2 of capping bearing, described bearing cap 2 use bolt of bearing caps 6 are installed and connected on bearing support, the endoporus that bearing cap 2 is passed in described rotating shaft 1 enters bearing support and bearing connection, be provided with Sealing between rotating shaft 1 and bearing cap 2 endoporus, as shown in Figure 1.

Described Sealing adopts the outside framework oil seal 4 of two same model specifications, described outside framework oil seal 4 is arranged in rotating shaft 1 and is placed in bearing cap 2 endoporus, at the bottom of right side outside framework oil seal 4 is limited in the hole of bearing cap 2 endoporus (reduced of base apertures and form), left side outside framework oil seal 4 is limited in the gland 3 that bearing cap 2 bore orifices arrange, described gland 3 use gland bolts 7 are installed and connected on bearing cap 2, the bulge loop of gland 3 end faces enters bearing cap 2 endoporus and props up left side outside framework oil seal 4, as shown in Figure 1.

Outside framework oil seal 4 after in place mutually side by side, both outer ring swellings are on bearing cap 2 endoporus circumference, both inner ring lip swellings are in rotating shaft 1; The uniform tapped hole 5 that offers at the bottom of the hole of described bearing cap 2 endoporus can be released outside framework oil seal 4 right-to-lefts by tapped hole 5 use screws the endoporus of bearing cap 2, as shown in Figure 1.

Technical solution of the present invention can be guaranteed to avoid occurring because equipment failure causes the excessive device security accident that causes of current of electric, reach energy-saving and emission-reduction and safeguard even non-maintaining purpose less thereby be conducive to reduce energy consumption that device maintenance frequently causes, thereby thereby being conducive to reduce that equipment failure reaches balanced production, lean production improves device efficiency and quality of product.

Claims

1. shredder pneumatic sealing device, comprise rotating shaft (1) and bearing support, described rotating shaft (1) is matched with the bearing of bearing support, be provided with Sealing between bearing cap (2) endoporus of rotating shaft (1) and bearing support, it is characterized in that: described Sealing is outside framework oil seal (4), at least two outside framework oil seals (4) are arranged in side by side rotating shaft (1) and are placed in bearing cap (2) endoporus, between described outside framework oil seal (4) is limited at the bottom of the hole of the gland (3) of bearing cap (2) bore orifice and bearing cap (2) endoporus.

2. shredder pneumatic sealing device according to claim 1, is characterized in that: the uniform tapped hole (5) of outside framework oil seal (4) being released bearing cap (2) endoporus that offers at the bottom of the hole of described bearing cap (2) endoporus.

3. shredder pneumatic sealing device according to claim 1 and 2, it is characterized in that: described gland (3) is connected with gland bolt (7) with bearing cap (2).