CN213032646U

CN213032646U - Sealing mechanism for mill shell

Info

Publication number: CN213032646U
Application number: CN202020500077.6U
Authority: CN
Inventors: 王宁飞; 方燕; 沈科; 周光泰
Original assignee: Anhui Guohong Alloy Material Co ltd
Current assignee: Anhui Guohong Alloy Material Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-04-23
Anticipated expiration: 2030-04-08

Abstract

The utility model relates to a mill shell sealing mechanism, include flange seat, wear-resisting protective barrel, sealed urceolus, sealed inner tube, lower part closing plate, rear portion seal receptacle, anterior seal receptacle, flange seat hole size is adjustable carries out fixed connection with outside vertical tie rod head, and wear-resisting protective barrel passes through the M bolt to be connected with the flange seat, and sealed urceolus passes through the M bolt to be connected with wear-resisting protective barrel, and the rear portion seal receptacle passes through the M bolt with anterior seal receptacle and links together with the mill casing. Has the advantages that: overcome the weak point of leaking the material that above-mentioned original design seal structure form produced, leaking, propose a novel design seal structure form, effective reduction system leaks the amount of wind, avoids leaking the material to play the environmental protection, energy saving and consumption reduction, increase life, reduce the reasonable in design of maintenance work volume effect, simple structure, change convenient practical environment-friendly vertical pull and casing seal, be original vertical pull rod and mill casing seal's upgrading product.

Description

Sealing mechanism for mill shell

Technical Field

The utility model relates to a mill shell sealing device technical field, concretely relates to mill shell sealing mechanism.

Background

FIG. 1 is a structural form of an original vertical pull rod and shell sealing, 1-1 is a U-shaped retainer, 1-2 is a connecting bolt, 1-3 is a rear sealing seat, 1-4 is a front sealing seat, 1-5 is an upper sealing plate, 1-6 is a lower sealing plate, and 1-7 is a wear-resistant sleeve.

In the grinding process of the raw material vertical mill, because the materials on the grinding disc are uneven, relative motion exists between a vertical pull rod for pressurizing the grinding roller and a mill shell. Due to the existence of relative movement, the original design is worn quickly and has gaps. The sealing design in the original structure form has the following effects in the actual production and use process: (1) the air leakage of the system is caused, the power consumption of equipment operation is increased, and the production cost is reduced; (2) the leakage of the material on the hydraulic cylinder is the most main factor of causing the damage of the piston rod and the seal of the hydraulic cylinder and the oil leakage of the cylinder head; (3) and due to air leakage and material leakage, the abrasion at the position is fast, so that the maintenance cost is increased, and the workload of field workers is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point of leaking the material, leaking the wind that above-mentioned former design seal structure form produced, providing a novel design seal structure form, effective lowering system leaks the amount of wind, avoids leaking the material to play the environmental protection, energy saving and consumption reduction increases life, reduces the reasonable in design of maintenance work load effect, simple structure, and the vertical straight pull of convenient practical environment-friendly of change is sealed with the casing.

Through control flange seat hole size, install the flange seat on the pull rod head, wear-resisting protective cylinder passes through M16 bolt and is connected with the flange seat. The sealing outer cylinder is connected with the wear-resistant protective cylinder through an M16 bolt. The rear seal mount is bolted to the front seal mount by M20 bolts and to the mill housing by M20 bolts. The sealing inner cylinder and the lower sealing plate are connected through an inner hexagon bolt of M10 and then placed on the front and rear sealing seats, and can flexibly move along with the movement of the vertical pull rod. All the parts are designed in a split type, so that the replacement and installation process is very convenient, and cutting and welding are not needed.

The gap between the sealing inner cylinder and the sealing outer cylinder is controlled to be 10mm, so that the air leakage quantity can be effectively reduced, and the environment pollution and the equipment damage caused by the leakage of materials outside the mill through the sealing are avoided due to the design of the top and the bottom. The sealing mechanism has the advantages that the sealing inner barrel and the sealing outer barrel are not provided with materials, the sealing abrasion speed can be greatly reduced, the sealing service life is effectively prolonged, the sealing mechanism is environment-friendly, energy-saving and consumption-reducing, the service life is prolonged, the maintenance workload effect is reduced, the design is reasonable, the structure is simple, and the practical environment-friendly vertical pulling and the sealing mechanism connected with the shell are convenient to replace.

Drawings

FIG. 1 is a schematic structural view of a prior art sealing mechanism for a mill housing;

fig. 2 is a schematic structural view of the sealing mechanism of the mill housing of the present invention.

Reference numerals: 1-a flange seat; 2-wear-resistant protective cylinder; 3-sealing the outer cylinder; 4-sealing the inner cylinder; 5-lower sealing plate; 6-rear sealing seat; 7-front sealing seat.

Detailed Description

The utility model discloses a seal structure form, as shown in fig. 2, 1 is the flange seat, 2 is wear-resisting protection section of thick bamboo, 3 is sealed urceolus, 4 is sealed inner tube, 5 is the lower part closing plate, 6 is the rear portion seal receptacle, 7 is the anterior seal receptacle.

The flange seat 1 is arranged on the pull rod head by controlling the size of an inner hole of the flange seat 1. The wear-resistant protective cylinder 2 is connected with the flange base 1 through M16 bolts. Sealed urceolus 3 is connected with wear-resisting protective cylinder 2 through the M16 bolt, rear portion seal receptacle 6 passes through M20 bolted connection with anterior seal receptacle 7, and be in the same place with mill casing by the M20 bolt, place in the front after sealed inner tube 4 passes through M10's hexagon socket head cap screw with lower part closing plate 5 and is connected, on the rear portion seal receptacle, can be along with the removal of vertical pull rod and nimble removal, all adopt split type design in the part design, it is very convenient in the change installation like this, do not need cutting and welding, be original vertical pull rod and the sealed upgrading product of mill casing.

The original structure form of sealing the vertical pull rod and the shell has relative movement between the vertical pull rod for pressurizing the grinding roller and the shell of the grinding machine due to uneven material on the grinding disc. Because of the existence of relative motion, make can have the clearance between the structure, and wearing and tearing are fast, not only increased the maintenance cost, the intensity of labour of on-the-spot workman has still been increased, this patent scheme adopts split type design, and adopt sealed inner tube 4 and lower part closing plate 5 to place in the front after through the hexagon socket head cap screw of M10, on the rear portion seal receptacle, can be along with the removal of vertical pull rod and nimble removal, reduce the produced friction of relative motion, simultaneously effectual control seals inner tube 4, the size of sealed urceolus 3 internal clearance, further improve sealed effect, reduce the amount of air leakage and reduce sealed wearing and tearing speed.

Preferably, a labyrinth convolution type sealing structure is adopted inside the mill shell from top to bottom, the inner gaps of the sealing inner cylinder 4 and the sealing outer cylinder 3 are controlled to be 10mm, a split structure is adopted, and the lower sealing plate 5 is placed on the front sealing seat 7 and the rear sealing seat 6 and adopts a movable structure.

Preferably, the sealing inner cylinder 4 and the lower sealing plate 5 are arranged in parallel and are vertically connected with the rear sealing seat 6 and the front sealing seat 7 which are arranged in parallel, the reasonable position connection can ensure the matching movement between structural members, and a sealing cavity connected with an external vertical pull rod is arranged in the wear-resistant protective cylinder 2.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a mill shell sealing mechanism, its characterized in that includes flange seat (1), wear-resisting protective cylinder (2), sealed urceolus (3), sealed inner tube (4), lower part closing plate (5), rear portion seal receptacle (6), anterior seal receptacle (7), flange seat (1) hole size is adjustable carries out fixed connection with outside vertical tie rod head, wear-resisting protective cylinder (2) through M16 bolt with flange seat (1) are connected, sealed urceolus (3) are connected with wear-resisting protective cylinder (2) through M16 bolt, rear portion seal receptacle (6) and anterior seal receptacle (7) are in the same place through M20 bolt and mill shell connection, place after the interior hexagonal bolted connection through M10 between sealed inner tube (4) and lower part closing plate (5) on anterior seal receptacle (7) and rear portion seal receptacle (6).

2. A mill housing sealing mechanism as claimed in claim 1, wherein the mill housing is internally provided with a labyrinth seal structure from top to bottom, the inner clearances of the inner sealing cylinder (4) and the outer sealing cylinder (3) are controlled to be 10mm, a split structure is adopted, and the lower sealing plate (5) is placed on the front sealing seat (7) and the rear sealing seat (6) and is of a movable structure.

3. A mill housing seal arrangement according to claim 1, characterised in that the seal inner cylinder (4) and lower seal plate (5) are maintained in parallel arrangement and in vertical connection with the parallel arrangement of the rear seal seat (6) and front seal seat (7).

4. A mill housing seal arrangement according to claim 1, characterised in that a seal chamber is provided in the wear resistant protective cylinder (2) in connection with an external vertical tie rod.