CN2855531Y - Medium speed and bowl shaped mill wind sealing device - Google Patents

Abstract

The utility model discloses a medium-speeded bowl mill wind-seal device, belonging to the grinding mill shaft seal, which is characterized in that a half-type fixed ring flange is fixedly arranged by bolts on a rotary main shaft at the lower part of a back gland bush; a plurality of welded sleeves are evenly distributed on the upper side surface of the fixed ring flange; a compressed spring is arranged in each sleeve; a movable ring flange is arranged on the upper part of each sleeve and a plurality of corresponding even distributed screws are welded on the movable ring flange; each screw on the movable ring flange goes through the compressed spring in each sleeve one by one and out of a through-hole on the fixed ring flange; a regulation nut is screwed on each screw; a compound rubber obturating ring is adhered on the upper side surface of the movable ring flange, a ring groove is opened on the compound rubber obturating ring and a grease lubricant layer and a fiber layer are arranged in the groove; under the action of the compressed spring, the rubber obturating ring press tightly on the surface of the back gland bush of the mill and the rotary main shaft for a good seal effect. The utility model is easy for maintenance and has a long service life.

Description

Moderate speed bowl shaped mill wind sealing device

Technical field

The utility model belongs to the grater sealing, especially relates to a kind of shaft sealer of middling speed bowl shaped mill.

Background technology

Now be widely used in the broken machine of middling speed bowl shaped mill in electric power, the metallurgy industry, stacked annular copper sheet sealing is adopted in the sealing of its rotary main shaft usually, be blown into positive seal wind on the top of annular copper sheet, annular copper sheet baffle seal wind leaks, and positive seal wind is blown in the mill body, seals on the one hand, the grinding charge material is not leaked, on the other hand, positive seal wind is discharged with the grinding charge material, reduces mill body temperature degree; But after using after a while, the inner rim of annular copper sheet produces wearing and tearing, produces the gap between itself and the rotary main shaft, causes positive seal wind to leak, cause noise big, the material dust leaks and flies upward, and has polluted environment, has reduced the cooling-down effect in the mill body simultaneously, flammable materials is easily caused potential safety hazard, material leaks, and has also increased the wearing and tearing of rotary main shaft, has reduced service life.

Summary of the invention

The purpose of this utility model is a kind of Moderate speed bowl shaped mill wind sealing device of design, good seal performance not only, and also wear-resisting, long service life.

The purpose of this utility model is achieved like this: a kind of Moderate speed bowl shaped mill wind sealing device, rotary main shaft and rear pressing cover by grinding machine are formed, it is characterized in that being positioned at the rear portion of rear pressing cover, on rotary main shaft, Hough formula annular fixed flange is installed with bolting, the uniform sleeve pipe that is welded on a side surface of annular fixed flange, the compression spring all is installed in each sleeve pipe, center line corresponding to each compression spring, the uniform hole that drills through on annular fixed flange, the other end at each sleeve pipe, the annular moving flange plate of the corresponding uniform screw rod that has been welded is installed, but this annular moving flange plate semi-ring formula, also burst, each screw rod correspondence on the annular moving flange plate is passed the compression spring in each sleeve pipe, and stretch out the through hole from annular fixed flange, spinning is adjusted nut on each screw rod, with the pressure of adjusting the compression spring as required and the amount of movement of annular moving flange plate, then in the rubber seal of the bonding installation combined type of the opposite side of annular moving flange plate, have annular groove on the rubber seal of this combined type, grease layer and fibrage are set in the groove, form ternary combined type rubber seal with the parent rubber layer of rubber seal, press mutually with the rear pressing cover of grinding machine the side of the band groove of this rubber seal, the inner rim of rubber seal then presses mutually with rotary main shaft, Elastic Contact produces good sealing effectiveness, guarantees that the positive seal wind in the reader does not leak; During installation; the annular fixed flange is packed on the rotary main shaft; each screw rod correspondence on the annular moving flange plate is passed the compression spring in each sleeve pipe; and stretch out the through hole from annular fixed flange; under the effect of compression spring; rubber seal is pressed on the surface of rear pressing cover of grinding machine and on the rotary main shaft, forms good sealing, when through after a while use; when rubber seal produces wearing and tearing; only need to shut down, twist the adjustment nut on the screw rod, make annular moving flange plate displacement; the wear extent of compensation rubber sealing circle; still keep good sealing, and easy to maintenance, long service life.

The Moderate speed bowl shaped mill wind sealing device that the utility model proposed is rational in infrastructure, and is safe and reliable, good seal performance not only, and also wear-resisting, easy-maintaining, long service life.

Now in conjunction with the accompanying drawings and embodiments the Moderate speed bowl shaped mill wind sealing device that the utility model proposed is further described.

Description of drawings

Fig. 1 is the main cross-sectional schematic of the Moderate speed bowl shaped mill wind sealing device that proposes of the utility model.

Among Fig. 1: 1, rotary main shaft 2, rear pressing cover 3, grease layer 4, fibrage 5, rubber seal 6, annular moving flange plate 7, adjustment nut 8, sleeve pipe 9, compression spring 10, screw rod 11, annular fixed flange

The specific embodiment

As can be seen from Figure 1: a kind of Moderate speed bowl shaped mill wind sealing device, rotary main shaft 1 and rear pressing cover 2 by grinding machine are formed, it is characterized in that being positioned at the bottom of rear pressing cover 2, on rotary main shaft 1, Hough formula annular fixed flange 11 is installed with bolting, the uniform sleeve pipe 8 that is welded on the uper side surface of annular fixed flange 11, compression spring 9 all is installed in each sleeve pipe 8, center line corresponding to each compression spring 9, the uniform hole that drills through on annular fixed flange 11, upper end at each sleeve pipe 8, the annular moving flange plate 6 of the corresponding uniform screw rod 10 that has been welded is installed, this annular moving flange plate 6 is the semi-ring formula, also burst, each screw rod 10 downward correspondences on the annular moving flange plate 6 are passed the compression spring 9 in each sleeve pipe 8, and stretch out the through hole from annular fixed flange 11, spinning is adjusted nut 7 on each screw rod 10, with the pressure of adjusting compression spring 9 as required and the amount of movement of annular moving flange plate 6, then in the rubber seal 5 of the bonding installation combined type of the upper side of annular moving flange plate 6, have annular groove on the rubber seal 5 of this combined type, grease layer 3 and fibrage 4 are set in the groove, form ternary combined type rubber seal 5 with the parent rubber layer of rubber seal 5, the upper side of the band groove of this rubber seal 5 presses mutually with the rear pressing cover 2 of grinding machine, the inner rim of rubber seal 5 then presses mutually with rotary main shaft 1, Elastic Contact produces good sealing effectiveness, guarantees that the positive seal wind in the reader does not leak; During installation; annular fixed flange 11 is packed on the rotary main shaft 1; each screw rod 10 downward correspondences on the annular moving flange plate 6 are passed the compression spring 9 in each sleeve pipe 8; and stretch out the through hole from annular fixed flange 11; under the effect of compression spring 9; rubber seal 5 is pressed on the surface of rear pressing cover 2 of grinding machine and on the rotary main shaft 1, forms good sealing, when through after a while use; when rubber seal 5 produces wearing and tearing; only need to shut down, twist the adjustment nut 7 on the screw rod 10, make annular moving flange plate 6 displacements; the wear extent of compensation rubber sealing circle 5; still keep good sealing, and easy to maintenance, long service life.

Claims (2)

1, a kind of Moderate speed bowl shaped mill wind sealing device is made up of the rotary main shaft (1) and the rear pressing cover (2) of grinding machine, it is characterized in that:

A, be positioned at the bottom of rear pressing cover (2), go up with bolting installation Hough formula annular fixed flange (11) at rotary main shaft (1), the uniform sleeve pipe that is welded (8) on the uper side surface of annular fixed flange (11), compression spring (9) all is installed in each sleeve pipe (8), corresponding to the center line of each compression spring (9), go up the uniform hole that drills through at annular fixed flange (11);

B, in the upper end of each sleeve pipe (8), the annular moving flange plate (6) of corresponding uniform be welded screw rod (10) is installed, this annular moving flange plate (6) but the semi-ring formula, the downward correspondence of each screw rod (10) on the annular moving flange plate (6) is passed the compression spring (9) in each sleeve pipe (8), and stretch out the through hole from annular fixed flange (11), each screw rod (10) is gone up spinning and is adjusted nut (7);

C, in the rubber seal (5) of the bonding installation combined type of upper side of annular moving flange plate (6), the rubber seal of this combined type has annular groove on (5), and grease layer (3) and fibrage (4) are set in the groove.

2, Moderate speed bowl shaped mill wind sealing device according to claim 1 is characterized in that annular moving flange plate (6) is a burst.

Images