CN203162157U

CN203162157U - Pneumatic sealing device for crusher

Info

Publication number: CN203162157U
Application number: CN2013200660303U
Authority: CN
Inventors: 陈义华
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-08-28
Anticipated expiration: 2023-02-05

Abstract

The utility model discloses a pneumatic sealing device for a crusher. The pneumatic sealing device comprises a rotary shaft and a bearing block. The rotary shaft is fitted to a bearing of the bearing block. At least two seals which are frame seals are arranged between the rotary shaft and an inner hole of a bearing cap of the bearing block. The frame seals pass through the rotary shaft in parallel and are located in the inner hole of the bearing cap. The frame seals are limited between an opening of the inner hole of the bearing cap and the hole bottom of the inner hole of the bearing cap. Threaded holes for pushing the frame seals out of the inner hole of the bearing cap are evenly formed at the hole bottom of the inner hole of the bearing cap. The pneumatic sealing device is mainly used for the application of creative development of hydraulic frame seals in the field of gas seal, the application of the frame seals is expanded, more choices on gas seal design and usage are provided, and the pneumatic sealing device is well effective.

Description

Shredder pneumostop device

(1) technical field:

The utility model relates to sealing mechanism, is a kind of shredder pneumostop device specifically.

(2) background technique:

What present domestic superfine powder was produced use is that TF-700 gradation formula is pulverized unit (adopting the thin Super Micro Mill of the river company type ultrafine crusher of Japan), have and do not have sieve, characteristics and crushing efficiency height such as wear-resisting, easy care cleaning, produce advantages such as dirt is little, noise is low, granularity is adjustable, the micro mist that is widely used in industries such as coating, pigment, nonmetallic ore, industrial chemicals, medicine, agricultural chemicals is broken.The working principle of this equipment: equipment is made up of pulverizing-classifying chamber and the blower fan of two series connection of installing on the horizontal axis, pulverizing-classifying chamber is made up of the band rotor of impact blades and stator liner and classifying turbine, the blade of first and second rotor has 30 °, 40 ° inclination angles respectively, 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 be subjected to strong impact, shearing, rubbing action repeatedly and pulverize.

Find in the use that this shredder exists that poor stability, rate of fault height, maintenance cost height, energy consumption are big, product yield and quality be cannot say for sure 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, owing to have machining error and assembly error, wool felt constantly takes place to rub and wear and tear with rotating shaft in the running, 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) model utility content:

For this reason, the utility model proposes a kind of further shredder pneumostop device that improves sealing effect.

The technological scheme of the utility model shredder pneumostop device 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 rotating shaft side by side and place the bearing cap endoporus, between described outside framework oil seal is limited at the bottom of the hole of the gland in bearing cap endoporus aperture 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 bigger lip of spring-back force than other lip-type packing, and sealing contact surface narrower in width, axle had follow compensation performance preferably, can obtain good sealing effect with bigger lip radial force.

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

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 utility model:

1, the utility model shredder pneumostop device will be mainly used in the creative gas seal field that uses of expanding of outside framework oil seal of liquid sealing, expanded the use of outside framework oil seal, there have been more more options the design and use of gas seal simultaneously aspect, obtains good effect.

2, the utility model has been cancelled the use of dovetail groove in the conventional seals and has been 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 utility model adopts two outside framework oil seal forms, and improve nearly a hundred times working life, realizes keeping in repair less even not having maintenance.

4, increase tapped hole in the bearing cap of the present utility model, 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 a kind of mode of execution of the utility model.

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 solutions of the utility model are described further:

The utility model shredder pneumostop device comprises rotating shaft 1 and bearing support, be provided with bearing in the described bearing support, bearing support is provided with the bearing cap 2 of capping bearing, described bearing cap 2 usefulness bolt of bearing caps 6 are installed and connected on the 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 the rotating shaft 1 and places 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 endoporus apertures arrange, described gland 3 usefulness gland bolts 7 are installed and connected on the 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 by the endoporus of tapped hole 5 usefulness screws with outside framework oil seal 4 right-to-lefts release bearing cap 2, as shown in Figure 1.

Technical solutions of the utility model can be guaranteed to avoid occurring owing to equipment failure causes the excessive device security accident that causes of current of electric, reach energy-saving and emission-reduction and few the maintenance even non-maintaining purpose thereby be conducive to reduce the energy consumption that device maintenance frequently causes, thereby thereby be conducive to reduce that equipment failure reaches balanced production, lean production improves device efficiency and quality of product.

Claims

1. shredder pneumostop 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 rotating shaft (1) side by side and place bearing cap (2) endoporus, between described outside framework oil seal (4) is limited at the bottom of the hole of the gland (3) in bearing cap (2) endoporus aperture and bearing cap (2) endoporus.

2. shredder pneumostop 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 pneumostop 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).