阅读说明：本技术 磨煤机基座调整式上密封装置 (Coal mill base adjusting type upper sealing device ) 是由 张鹏博 魏来 袁斌彬 成红兵 李莹 宋德安 牛犇 于 2021-09-28 设计创作，主要内容包括：磨煤机基座调整式上密封装置。磨煤机安装后上密封面低于传动盘下密封面,造成密封风无法有效对混合风进行密封,混合风携带石子煤经此间隙漏到密封风室内,经机座密封下密封漏到环境中。本发明组成包括：机架(8)和传动盘(1),所述的机架与所述的传动盘的传动轴通过轴承连接,所述的机架上固定有内气封固定环(3),所述的内气封固定环外套有内气封调整环(4),所述的内气封固定环与所述的内气封调整环通过固定螺栓(5)固定,所述的内气封固定环的外环面上固定有支撑环(6),所述的支撑环上螺纹连接有多个调整螺栓(7),所述的调整螺栓的顶部顶在所述的内气封调整环的底部。本发明用于磨煤机基座调整式上密封装置。(Coal pulverizer base adjustable goes up sealing device. The upper sealing surface is lower than the lower sealing surface of the transmission disc after the coal mill is installed, so that the sealing air can not effectively seal the mixed air, the mixed air carries pebble coal to leak into the sealing air chamber through the gap, and the pebble coal is sealed and leaked into the environment through the base. The invention comprises the following components: the air-tight seal device comprises a rack (8) and a transmission disc (1), wherein the rack is connected with a transmission shaft of the transmission disc through a bearing, an inner air seal fixing ring (3) is fixed on the rack, an inner air seal adjusting ring (4) is sleeved outside the inner air seal fixing ring, the inner air seal fixing ring is fixed with the inner air seal adjusting ring through a fixing bolt (5), a support ring (6) is fixed on the outer annular surface of the inner air seal fixing ring, a plurality of adjusting bolts (7) are in threaded connection with the support ring, and the tops of the adjusting bolts are pressed against the bottom of the inner air seal adjusting ring. The invention is used for the adjustable upper sealing device of the coal mill base.)

1. The utility model provides a coal pulverizer base adjustment formula upper seal device which constitutes and includes: frame and driving plate, the frame with the transmission shaft of driving plate pass through the bearing and connect characterized by: the frame is fixed with an inner gas seal fixing ring, the inner gas seal fixing ring is sleeved with an inner gas seal adjusting ring, the inner gas seal fixing ring and the inner gas seal adjusting ring are fixed through fixing bolts, a support ring is fixed on the outer ring surface of the inner gas seal fixing ring, a plurality of adjusting bolts are connected to the support ring in a threaded mode, and the tops of the adjusting bolts abut against the bottom of the inner gas seal adjusting ring.

2. The coal pulverizer base adjustable upper seal device of claim 1, wherein: and a scraper device is further fixed at the bottom of the transmission disc, and the bottom of the scraper device is over against the rack.

3. The coal pulverizer base adjustable upper seal device of claim 2, wherein: the outer ring surface of the inner gas seal adjusting ring is provided with a plurality of strip-shaped stepped holes, and the fixing stud on the outer ring surface of the inner gas seal fixing ring penetrates through the strip-shaped stepped holes and then is in threaded connection with the nut.

Technical Field

The invention relates to an adjustable upper sealing device for a base of a coal mill.

Background

The upper sealing of the coal mill base is originally designed as axial sealing, the upper sealing surface is higher than the lower sealing surface of the transmission disc by 30mm, and the clearance between the upper sealing surface and the lower sealing surface is 1.5 +/-0.5 mm for sealing. The initial practical situation of installation of the coal mill is that the upper sealing surface is lower than the lower sealing surface of the transmission disc, so that the gap value is not mentioned, the sealing wind cannot effectively seal the mixed wind, the mixed wind carries the pebble coal to leak into the sealing wind chamber through the gap, and the pebble coal is sealed and leaked into the environment through the base.

Disclosure of Invention

The invention aims to provide an adjustable upper sealing device for a coal mill base.

The above purpose is realized by the following technical scheme:

the utility model provides a coal pulverizer base adjustment formula upper seal device which constitutes and includes: the frame is connected with a transmission shaft of the transmission disc through a bearing, an inner air seal fixing ring is fixed on the frame, an inner air seal adjusting ring is sleeved outside the inner air seal fixing ring, the inner air seal fixing ring and the inner air seal adjusting ring are fixed through fixing bolts, a support ring is fixed on the outer ring surface of the inner air seal fixing ring, a plurality of adjusting bolts are in threaded connection with the support ring, and the tops of the adjusting bolts abut against the bottom of the inner air seal adjusting ring.

The coal mill base adjusting type upper sealing device is characterized in that a scraper device is further fixed at the bottom of the transmission disc, and the bottom of the scraper device is opposite to the rack.

The coal mill base adjusting type upper sealing device is characterized in that a plurality of strip-shaped stepped holes are formed in the outer ring surface of the inner gas seal adjusting ring, and a fixing stud on the outer ring surface of the inner gas seal fixing ring penetrates through the strip-shaped stepped holes and then is in threaded connection with a nut.

Has the advantages that:

1. according to the invention, the inner gas seal adjusting ring is matched with the inner gas seal fixing ring, and the gap between the inner gas seal adjusting ring and the transmission disc can be adjusted by adjusting the position of the inner gas seal adjusting ring, so that the gap of 1.5-2mm between the inner gas seal adjusting ring and the transmission disc can be kept, and the effectiveness of sealing is ensured.

2. According to the invention, the scraper device is arranged, so that the scraper device can scrape the bottom of the rack, pebble coal in the rack can be cleaned, the pebble coal is prevented from being accumulated in a gap and being extruded into an upper sealing gap to enter the sealing air chamber, the sealing effect is ensured, and meanwhile, the abrasion of the transmission disc is prevented.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

in the figure: 1. a drive plate; 2. a squeegee assembly; 3. an inner gas seal fixing ring; 4. an inner gas seal adjusting ring; 5. fixing the bolt; 6. a support ring; 7. adjusting the bolt; 8. a frame; 9. a strip-shaped stepped hole.

The specific implementation mode is as follows:

example 1:

the utility model provides a coal pulverizer base adjustment formula upper seal device which constitutes and includes: the air-tight device comprises a rack 8 and a transmission disc 1, wherein the rack is connected with a transmission shaft of the transmission disc through a bearing, an inner air seal fixing ring 3 is fixed on the rack, an inner air seal adjusting ring 4 is sleeved outside the inner air seal fixing ring, the inner air seal fixing ring and the inner air seal adjusting ring are fixed through a fixing bolt 5, a support ring 6 is fixed on the outer annular surface of the inner air seal fixing ring, a plurality of adjusting bolts 7 are in threaded connection with the support ring, and the tops of the adjusting bolts are pressed against the bottom of the inner air seal adjusting ring.

Example 2:

according to the coal mill base adjusting type upper sealing device in the embodiment 1, a scraper device is further fixed to the bottom of the transmission disc, and the bottom of the scraper device is opposite to the rack.

Example 3:

according to the coal mill base adjusting type upper sealing device in the embodiment 1 or 2, the outer ring surface of the inner gas seal adjusting ring is provided with a plurality of strip-shaped stepped holes 9, and the fixing stud on the outer ring surface of the inner gas seal fixing ring penetrates through the strip-shaped stepped holes and then is in threaded connection with the nut.