CN203487045U

CN203487045U - Preheater dust collecting hopper unloading push rod sealing device

Info

Publication number: CN203487045U
Application number: CN201320576691.0U
Authority: CN
Inventors: 汪宇; 李建韦; 武常生; 宋富强; 李振合; 王磊
Original assignee: Xinxing Energy Equipment Co Ltd
Current assignee: Xinxing Energy Equipment Co Ltd
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2014-03-19
Anticipated expiration: 2023-09-17

Abstract

The utility model relates to a preheater dust collecting hopper unloading push rod sealing device. The right end of a hydraulic cylinder is hinged to a dust collecting hopper; the left end of the hydraulic cylinder is hinged to the lower end of a door-shaped frame of which the upper end is hinged to the dust collecting hopper; the lower part of the door-shaped frame is hinged to the left end of a push rod; the right end of the push rod is hinged to a push head; the push head extends into the dust collecting hopper by a guide rail; a dust collecting end cover is hermetically fixed on the dust collecting hopper around the push rod by a surrounding plate, a bolt and a nut; the dust collecting end cover is used for fixing a pressing plate and a cushion plate by a bolt and a nut; the dust collecting end cover and the dust collecting hopper are provided with a central hole capable of enabling the push rod to move in the radial direction respectively; a large central hole is formed in the cushion plate and the pressing plate is provided with a small central hole; an electrographite plate is glidingly embedded in each of the large central hole and the small central hole for radial sealing; the electrographite plates and the push rod are in clearance fit; a flexible graphite padding is embedded between each electrographite plate and the push rod for axial sealing, so the radial moving sealing and axial moving sealing can be realized simultaneously.

Description

Preheater flue-dust retainer discharge ram tightness system

Technical field

The utility model relates to a kind of metallurgy industry shaft preheater pusher field that belongs to, be a kind of can guarantee sealing and meet simultaneously push rod shaft to radially simultaneously motion device.

Background technology

At present, metallurgy industry shaft preheater material-pulling device is to take hydro-cylinder by door type frame, push rod, to drive the to-and-fro movement of cutting somebody's hair to realize feed as power.Because hydro-cylinder, push rod are all to take door type frame and preheater main body tie point to move reciprocatingly as the center of circle, therefore push rod axially reciprocating also has radial motion simultaneously, existing tightness system can not adapt to the radial motion of push rod, cause the web member of tightness system to be cut off and form and leak out, cannot reach the function of sealing.

Summary of the invention

In order to overcome the shortcoming of prior art, the utility model provides a kind of preheater flue-dust retainer discharge ram tightness system, can realize axial motion sealing and radial motion sealing simultaneously.

The technical scheme in the invention for solving the technical problem is: right-hand member and the flue-dust retainer of hydro-cylinder are hinged, the left end of hydro-cylinder and door type frame lower end are hinged, upper end and the flue-dust retainer of door type frame are hinged, the bottom of door type frame and the left end of push rod are hinged, the right-hand member of push rod with cut somebody's hair hinged, cut somebody's hair and stretch in flue-dust retainer by guide rail, on push rod flue-dust retainer around, by coaming plate, bolt and nut sealing fixed set ash bucket end cap, flue-dust retainer end cap is by bolt and nut fixation clip and backing plate; The centre hole that described flue-dust retainer end cap and flue-dust retainer have enough push rods to move radially; Described backing plate has large centre hole, and pressing plate has little centre hole, setting-in electrographite plate slidably in large centre hole and little centre hole, be used for radially to sealing, electrographite plate coordinates with push rod clearance, and setting-in flexible graphite packing between electrographite plate and push rod is used for shoulder seal.

1), by using soft graphite and electrographite can realize the function of self-lubricating for sealing material the utlity model has following advantages:; 2), by soft graphite and electrographite, lubricate and can prevent that the metal material of friction portion from getting rusty, and increases the service life; 3) when, realizing axial motion sealing, also can realize radial motion sealing.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the utility model schematic diagram;

Fig. 2 is the A place enlarged view in the utility model Fig. 1.

Embodiment

As shown in Figure 1, 2, the right-hand member of hydro-cylinder 2 and flue-dust retainer 5 are hinged, the left end of hydro-cylinder 2 and door type frame 1 lower end are hinged, the upper end of door type frame 1 and flue-dust retainer 5 are hinged, the left end of the bottom of door type frame 1 and push rod 3 is hinged, the right-hand member of push rod 3 with cut somebody's hair 6 hingedly, cut somebody's hair and 6 by guide rail, stretch in flue-dust retainer 5, on push rod 3 flue-dust retainer 5 around, by coaming plate 4, bolt and nut 12 sealing fixed set ash bucket end caps 13, flue-dust retainer end cap 13 is by bolt and nut 11 fixation clips 9 and backing plate 10; The centre hole 15 that described flue-dust retainer end cap 13 and flue-dust retainer 5 have enough push rods 3 to move radially; Described backing plate 10 has large centre hole 14, pressing plate 9 has little centre hole 16, setting-in electrographite plate 8 slidably in large centre hole 14 and little centre hole 16, be used for radially to sealing, electrographite plate 8 and push rod 3 running fit, setting-in flexible graphite packing 7 between electrographite plate 8 and push rod 3, is used for shoulder seal.

The thickness of described electrographite plate 8 is less than backing plate 10 thickness.

Claims

1. a preheater flue-dust retainer discharge ram tightness system, the right-hand member of hydro-cylinder (2) and flue-dust retainer (5) are hinged, the left end of hydro-cylinder (2) and door type frame (1) lower end are hinged, the upper end of door type frame (1) and flue-dust retainer (5) are hinged, the left end of the bottom of door type frame (1) and push rod (3) is hinged, the right-hand member of push rod (3) is hinged with cut somebody's hair (6), cut somebody's hair (6) by guide rail, stretch in flue-dust retainer (5), it is characterized in that: upper by coaming plate (4) at push rod (3) flue-dust retainer (5) around, bolt and nut (12) sealing fixed set ash bucket end cap (13), flue-dust retainer end cap (13) is by bolt and nut (11) fixation clip (9) and backing plate (10), the centre hole (15) that described flue-dust retainer end cap (13) and flue-dust retainer (5) have enough push rods (3) to move radially, described backing plate (10) has large centre hole (14), pressing plate (9) has little centre hole (16), setting-in electrographite plate (8) slidably in large centre hole (14) and little centre hole (16), electrographite plate (8) and push rod (3) running fit, setting-in flexible graphite packing (7) between electrographite plate (8) and push rod (3).

2. preheater flue-dust retainer discharge ram tightness system according to claim 1, is characterized in that: the thickness of described electrographite plate (8) is less than the thickness of backing plate (10).